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Nidec Corporation patents


Recent patent applications related to Nidec Corporation. Nidec Corporation is listed as an Agent/Assignee. Note: Nidec Corporation may have other listings under different names/spellings. We're not affiliated with Nidec Corporation, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "N" | Nidec Corporation-related inventors


 new patent  Motor drive control device and motor control method

A motor drive control device includes a sensorless drive processing unit and a rotation state determining unit, and outputs drive signals to a three-phase voltage type inverter that supplies drive current to a sensorless motor. The sensorless drive processing unit of the motor drive control device performs sensorless drive processing by closed-loop speed control, based on voltage applied to shunt resistance of the inverter. ... Nidec Corporation

 new patent  Motor and disk drive apparatus

A spindle motor includes a stationary portion, a rotating portion arranged to rotate about a central axis extending in a vertical direction, and a bearing portion arranged to support the rotating portion such that the rotating portion is rotatable with respect to the stationary portion. The stationary portion includes a stator unit including a plurality of coils arranged in an annular shape with the central axis as a center; a base portion arranged below the stator unit; and a housing arranged to define an interior space in which the rotating portion, the bearing portion, and the stator unit are accommodated. ... Nidec Corporation

 new patent  Lens drive device, and imaging device and electronic apparatus provided with same

A lens driving device having a leaf spring; a suspension wire, having one end thereof joined to the leaf spring; a supporting plate to which the other end portion of the suspension wire is joined; a lens retaining portion that is supported by the leaf spring and the suspension wire; and a driving portion for driving the lens retaining portion in a direction that is perpendicular to the optical axial direction of the lens. The leaf spring and/or the supporting plate is joined to the suspending wire through a joining material that is provided on a primary face, where the wettability of the primary face in respect to the joining material is greater than the wettability, in respect to the joining material, of the face on the opposite side from the primary face.. ... Nidec Corporation

 new patent  Rotation transmission mechanism and damper device

A rotation transmission mechanism may include a drive wheel structured to rotate to one side, a driven wheel turned by the drive wheel to one side, and an urging member urging the driven wheel to turn to the other side. The drive wheel may include a drive teeth forming part where drive teeth structured to turn the driven wheel to the one side are provided at positions different from each other in an axial line direction, and a cam face forming part on which the driven wheel is slid. ... Nidec Corporation

 new patent  Blower device and vacuum cleaner

A blower device includes a motor that includes a shaft centered around a central axis extending in a vertical direction, a stator surrounding the shaft, and a housing holding the stator, an impeller that is connected to an upper side of the shaft, an impeller housing that accommodates the impeller and includes an intake port, and an exhaust port that is positioned below a circumferential edge portion of the impeller housing. The exhaust port is positioned above the housing and opens downwards along a circumferential direction.. ... Nidec Corporation

Stator unit, motor, and method of manufacturing stator unit

A stator unit included in a motor includes a base member, an armature, a circuit board, and a mold resin portion. The base member extends substantially perpendicularly to a vertically extending center axis. ... Nidec Corporation

Stator unit, motor, and method of manufacturing stator unit

A stator unit included in a motor includes a base member, an armature, a circuit board, and a mold resin portion. The base member extends substantially perpendicularly to a vertically extending center axis. ... Nidec Corporation

Fan assembly

A fan assembly for a refrigerator interior includes a lower housing where a fan that rotates around a rotation axis as a center is installed, the rotation axis extending in an up-down direction; an upper housing that includes an inlet that sucks air from the refrigerator interior; and a side housing that covers a surrounding portion of the fan, wherein any one of the upper housing, the lower housing, and the side housing includes a flow straightening member that straightens a flow of air that is discharged from the fan, and wherein any one of the upper housing, the lower housing, and the side housing includes a discharge port.. . ... Nidec Corporation

Blower and vacuum cleaner

A blower according to an exemplary embodiment of the present disclosure includes a rotor that has a shaft disposed extending vertically, a stator positioned at an outer side of the rotor in a radial direction, a cylindrical housing extending in the axial direction and accommodating the rotor and the stator, and an impeller attached to the shaft, at an upper side from the stator. The stator includes a ring-shaped core back portion, plurality of teeth portions extending from the core back portion toward an inner side in the radial direction, an insulator that covers at least part of the teeth portions, a coil wound on each of the teeth portions via the insulator, and a flow path forming member of which at least part is positioned further at an inner side in the radial direction than the core back portion. ... Nidec Corporation

Blower and vacuum cleaner

A blower includes a rotor including a shaft disposed along a central vertical axis, a stator positioned radially outward of the rotor, a tubular housing accommodating the rotor and stator, and an impeller attached to the shaft at a position above the stator. The stator includes an annular core back portion, tooth portions extending radially inwards from the core back portion, coils wound around the tooth portions, and at least two walls circumferentially arranged with a gap therebetween. ... Nidec Corporation

Motor

A motor includes a rotor including a shaft arranged along a central axis extending in one direction; and a stator arranged radially outside of the rotor. The stator includes a stator core including an annular core back portion arranged to surround the rotor, and a plurality of tooth portions arranged to extend radially inward from the core back portion; and coils each of which is wound around a separate one of the tooth portions. ... Nidec Corporation

Blower and vacuum cleaner

A blower according to an exemplarily embodiment of the present disclosure includes a motor that includes a shaft disposed along a center axis extending vertically; an impeller that is connected to the shaft and rotates integrally with the shaft; an impeller housing that is disposed on an upper side of the impeller or a radially outer side of the impeller; a motor housing that is disposed on a radially outer side of the motor; a passage member that is disposed on a radially outer side of the motor housing with a gap interposed therebetween; and a plurality of stator blades that are arranged in a circumferential direction in the gap between the motor housing and the passage member. At least one of the stator blades includes a first stator blade disposed on either one of the motor housing and the passage member, and a second stator blade disposed on the other one of the motor housing and the passage member. ... Nidec Corporation

Imaging device and imaging method

An imaging apparatus for use with a subject may include a light source structured to irradiate the subject with a yellow light, a magenta light and a cyan light at a delayed illumination timing; and a plurality of photodetectors structured to detect the intensity of the light coming from the subject when the yellow light is irradiated, the intensity of the light coming from the subject when the magenta light is irradiated, and the intensity of the light coming from the subject when the cyan light is irradiated.. . ... Nidec Corporation

Dc-brushless-motor control device

A dc-brushless-motor control device supplies current to windings of a stator of a three-phase dc brushless motor, which rotates a suction fan of a suction apparatus, and includes a controller controlling a rotation speed of a rotor; an, operation detection circuitry detecting an operation on the suction apparatus, and a storage storing information indicating a target rotation speed of the rotor divided into rotation speed levels corresponding to the operation detected by the operation detection circuitry. The controller controls the rotation speed of the rotor by feedback of the rotation speed of the rotor or the current supplied to the windings when the rotation speed of the rotor indicated by a movement cycle of a magnetic pole position detected by a magnetic pole position detector exceeds the target rotation speed corresponding to the operation detected by the operation detection circuitry.. ... Nidec Corporation

05/31/18 / #20180152083

Stator for an electric motor

A stator for an electric motor may have a substantially annular shape centered around a central axis and may include a stator core having a plurality of teeth consecutively arranged in a circumferential direction, and a plurality of coils wound around respective teeth of the plurality of teeth. The plurality of coils may be grouped into a plurality of phase groups. ... Nidec Corporation

05/31/18 / #20180152080

Dc-brushless-motor control device

A dc-brushless-motor control device supplies current to windings of a stator of a three-phase dc brushless motor and controls conduction states of switches based on first, second, third, and fourth states, in order from a time point when a magnetic pole position detected by a magnetic pole position detector reaches a reference position, the first state where both of the first and second switches are in an off state, the second state where the first switch is maintained in an on state and the second switch is maintained in the off state, the third state where both of the first and the second switches are in the off state, and the fourth state where the first switch is maintained in the off state and the second switch is maintained in the on state.. . ... Nidec Corporation

05/31/18 / #20180152073

Stator unit and motor

A stator unit for use in a motor includes a cylindrical bearing housing, a stator core, a resin insulator, a conductive wire, a circuit board, a molded resin portion, and an elastic member. The stator core is fixed to an outer circumferential surface of the bearing housing. ... Nidec Corporation

05/31/18 / #20180150663

Card reader and method of controlling card reader

A card reader for connecting a plurality of types of devices detachably may include a connection detection unit configured to check a connector to which a socket is connected among connectors of the plurality of types of devices; a device discrimination unit configured to check information stored in association with the connector checked by the connection detection unit and to set a security level of an own apparatus; and a data-processing unit configured to record or reproduce data in a card corresponding to the security level of the own apparatus that is set by the device discrimination unit.. . ... Nidec Corporation

05/31/18 / #20180150656

Card reader and magnetic information recording medium processing device

A card reader may include a conveyance passage; an optical sensor; a first circuit board; a second circuit board; a first cover member; a second cover member; a first frame; and a second frame comprising a conveyance face on a second direction side of the card conveyance passage. The first frame may include a first transmission hole, and the first frame may be attached with one of the first circuit board and the second circuit board. ... Nidec Corporation

05/31/18 / #20180149539

Hydraulic sensor attachment structure

A hydraulic sensor attachment structure includes an accommodating portion, a sensor case, and a lid disposed over the accommodating portion. In the hydraulic sensor attachment structure, an oil passage body includes the accommodating portion and a hydraulic pressure detection port. ... Nidec Corporation

05/31/18 / #20180149148

Refrigerant compressor

A refrigerant compressor includes a hermetically sealed housing and includes a drive unit; wherein the drive unit is arranged in the interior of the housing and is attached, by way of at least one spring element, to at least one mounting region of the housing with mounting action; wherein a first mounting element and a second mounting element are provided; wherein one of the two mounting elements is connected to the drive unit and the other of the two mounting elements is connected to the mounting region. The first mounting element is of sleeve-like form and has an inner wall, and the second mounting element has a bolt-like section, wherein the bolt-like section is received at least in sections in the first mounting element, whereby an overlap region is formed, in which overlap region a gap is formed between the bolt-like section of the second mounting element and the inner wall of the first mounting element.. ... Nidec Corporation

05/24/18 / #20180145616

Dc-brushless-motor control device

A dc-brushless-motor control device supplies a current to windings of a stator of a three-phase dc brushless motor which rotates a negative pressure generation fan, and includes a rectifier that rectifies an alternating current with a voltage of 300 v or less, a booster that boosts a voltage of the current rectified by the rectifier to 360 v or more, a three-phase bridge inverter that supplies the current boosted by the booster to the windings of the three-phase dc brushless motor, and a controller that controls a rotation speed of a rotor by controlling a conduction state of the three-phase bridge inverter based on a magnetic pole position detected by a magnetic pole position detector which detects a magnetic pole position of the rotor of the three-phase dc brushless motor.. . ... Nidec Corporation

05/24/18 / #20180144159

Card insertion and ejection mechanism and card processing device

Provided is a card insertion and ejection mechanism to be mounted forward of a card reader structured to convey a card so that a longitudinal direction of the card is coincided with a conveying direction of the card, the card insertion and ejection mechanism being capable of preventing skimming and capable of sending into the card reader the card in an orientation capable of being processed by the card reader even when the card is inserted into the card insertion and ejection mechanism in any orientation. A card insertion and ejection mechanism takes in a card to a turning position when the card is inserted into a card insertion port with front and rear sides of the card directed correctly so that a short widthwise direction of the card is coincided with an “x” direction, and controls a card turning and conveying mechanism in a turning direction and at a turning angle based on a result of determination as to an orientation of the inserted card, to turn the card. ... Nidec Corporation

05/24/18 / #20180143093

Oil pressure sensor attachment structure

An oil sensor attachment structure includes a guide projection disposed on an upper surface of an oil passage body and a sensor case. The guide projection includes a pair of first walls, a pair of first protrusions protruding toward each other, and a second wall. ... Nidec Corporation

05/24/18 / #20180141208

Industrial robot

An industrial robot may include a plurality of hands structured to mount the transfer objects; an arm comprising a front end side and a base end side, the hands being rotatably joined with the front end side of the arm; and a main body portion to which the base end side of the arm is rotatably joined. The main body portion may include an elevating unit to which the base end side of the arm is rotatably joined on a top surface side thereof, a housing which holds the elevating unit to be raised/lowered and in which at least part of a bottom end of the elevating unit is housed, and an elevating mechanism structured to raise and lower the elevating unit. ... Nidec Corporation

05/24/18 / #20180140145

Blower and vacuum cleaner

A blower according to an exemplary embodiment of the present disclosure includes a rotor that has a shaft, a stator, a housing, an impeller attached to the shaft, at an upper side from the stator, and an exhaust air guide portion attached at the upper side of the housing. The housing has a plurality of through holes passing through the housing in the radial direction. ... Nidec Corporation

05/17/18 / #20180138777

Motor, motor device and pointer type display device

A motor in which a stator core is positioned in a case; a motor device equipped with the motor; and a pointer type display device are provided. Specifically, in a motor, a stator core is equipped with a round hole and an elongated hole, and positioning parts that correspond to the round hole and the elongated hole are formed in a first case. ... Nidec Corporation

05/17/18 / #20180135649

Axial fan and refrigerator

An axial fan includes an impeller, a motor, and a housing. The impeller is configured to rotate about a rotation axis extending in a vertical direction; a motor configured to rotationally drive the impeller. ... Nidec Corporation

05/17/18 / #20180135648

Axial fan and refrigerator

An axial fan according to an exemplary embodiment of the present disclosure includes an impeller, a motor, and a housing. The impeller is configured to rotate about a rotation axis extending in a vertical direction. ... Nidec Corporation

05/10/18 / #20180130619

Rotary switch

Rotary switches and associated methods. A rotary switch can include one or more arcuate passages which are prone to ingress of particulate or liquid contaminants. ... Nidec Corporation

05/10/18 / #20180129833

Card processing device and a control method of card processing device

A card processing device with which a user operates a card by hand may include a card-inserting section at which the card is inserted; a card-storing section structured to store the card while a rear end portion of the inserted card is exposed from the card-inserting section; a reading section structured to read recorded information on the card stored in the card-storing section; a first detecting section structured to detect that the card is inserted to the card-storing section from the card-inserting section; a second detecting section, arranged on the farther side than the first detecting section in the inserting direction of the card, structured to detect that the card is inserted; and a status-monitoring section structured to detect fraud from the relation of the detections of the card at the first detecting section and the second detecting section.. . ... Nidec Corporation

05/10/18 / #20180129119

Optical unit with shake correction function

An optical unit with a shake correction function may include an optical module which holds an optical element, a swing support mechanism structured to swingably support the optical module, a holder which holds the optical module through the swing support mechanism, a turnable support mechanism which turnably supports the holder around the axial line, a fixed body which supports the holder through the turnable support mechanism, a magnetic swing drive mechanism structured to swing the optical module, and a magnetic rolling drive mechanism structured to turn the holder. The magnetic swing drive mechanism may include a swing drive magnet fixed to the fixed body and a swing drive coil fixed to the optical module. ... Nidec Corporation

05/10/18 / #20180129118

Optical unit with shake correction function

An optical unit with a shake correction function may include a movable body having an optical module, a swing support mechanism, and a holder; a fixed body which turnably holds the movable body around the axial line; a magnetic swing drive mechanism structured to swing the optical module; and a magnetic rolling drive mechanism structured to turn the movable body around the axial line. The magnetic rolling drive mechanism may include a rolling drive magnet which is fixed to the fixed body and a rolling drive coil and a magnetic sensor which are fixed to the movable body so as to face the rolling drive magnet. ... Nidec Corporation

05/10/18 / #20180129066

Optical unit with shake correction function

An optical unit includes a subject-side rotary bearing part located on a subject side of an optical module and an image-side rotary bearing part located on an image side of the optical module. The two rotary bearing parts disposed on both the subject side and the image side of the optical module make it possible to restrain the tilt of the optical module and restrain backlash during a rotation of the optical module around an optical axis. ... Nidec Corporation

05/10/18 / #20180129065

Optical unit with shake correction function

An optical unit with a shake correction function may include an optical module comprising an optical element; a swing support mechanism structured to swingably support the optical module between a reference posture in which a preset axis and an optical axis are aligned, and an inclined posture in which the optical axis is inclined with respect to the axis; a holder structured to support the optical module via the swing support mechanism; a rotation support mechanism structured to rotatably support the holder around the axis; a fixed body structured to support the holder via the rotation support mechanism; a swing magnetic drive mechanism structured to swing the optical module; and a rolling magnetic drive mechanism structured to rotate the holder. The rotation support mechanism may include a rotation bearing that supports the holder on a subject side of the swing support mechanism.. ... Nidec Corporation

05/03/18 / #20180123433

Motor and method of manufacturing motor

A motor may include a stator having coil groups of plural phases and a connector, the stator comprising a plurality of split stators. Each of the split stators may include a split core having an arc-shaped core back section and a tooth section, an insulator, a coil which has a lead-out line that is connected to the connector. ... Nidec Corporation

05/03/18 / #20180123416

Motor and method of manufacturing motor

A motor includes a stator, a rotor that rotates relatively to the stator, a circuit board, and a holding member that holds the stator and the circuit board. The stator includes a stator core including a core back and teeth, an insulator covering a portion of the stator core, a coil with a coil wire wound around the teeth with the insulator in between, and a coil end portion being an end portion of the coil wire. ... Nidec Corporation

05/03/18 / #20180123231

Directional antenna for wireless motor connection

An antenna assembly comprises a substrate, an impedance matching network, and a driven antenna element. The substrate includes an insulating layer and a first electrically conductive layer disposed on a top surface of the insulating layer. ... Nidec Corporation

04/19/18 / #20180108377

Motor and disk drive apparatus

This motor is arranged to rotate an annular member, and includes a stationary portion including a stator, and a rotating portion arranged to be rotatable about a central axis extending in a vertical direction. The rotating portion includes a hub arranged to extend in an annular shape around the central axis; a magnet including a pole surface arranged radially opposite to the stator; and a yoke to which the magnet is fixed. ... Nidec Corporation

04/19/18 / #20180106348

Continuously variable transmission and bicycle

A continuously variable transmission includes an input rotor, an output rotor, a plurality of planetary rollers, a guide member, a movable ring, and an elastic member. The input rotor is arranged to rotate about a main axis at a rotation rate before a speed change. ... Nidec Corporation

04/12/18 / #20180103536

Packaging a printed circuit board having a plurality of semiconductors in an inverter

An electrical device configuration enables heat to be dissipated from a multi-layer printed circuit board (pcb) while handling electrical currents in excess of 200 amps. The semiconductor devices that convert input dc current to output ac current are mounted to a side of the pcb that is opposite the side of the pcb that receives the input dc current. ... Nidec Corporation

04/12/18 / #20180102694

Motor apparatus and method of manufacturing same

A motor apparatus including a motor unit, an external circuit board provided external to the motor unit, a casing that holds the external circuit board, and a first resin portion that coats the external circuit board, in which the motor unit includes a rotating portion that rotates about a central axis that extends vertically, the rotating portion including a magnet, a stationary portion that includes an armature, the stationary portion rotatably supporting the rotating portion, and a second resin portion that coats the armature, in which the casing includes a bracket portion that holds the stationary portion, and in which the first resin portion and the second resin portion are formed in a continuous manner.. . ... Nidec Corporation

04/12/18 / #20180100517

Centrifugal blower and vacuum cleaner

A centrifugal blower includes a motor including a stator and a motor cover, a centrifugal impeller rotating together with a rotating portion of the motor, and a blower casing. The stator includes a stator core including a toric core back. ... Nidec Corporation

04/12/18 / #20180100511

Fan motor

This fan motor includes a motor and an impeller arranged to rotate together with a rotating portion of the motor. The motor includes a stationary portion including a stator, and the rotating portion, which includes a magnet arranged opposite to the stator and which is supported through a bearing portion to be rotatable about a central axis extending in a vertical direction with respect to the stationary portion. ... Nidec Corporation

04/05/18 / #a wide angle lens includes a first lens, a second lens, a third lens, a fourth lens, a diaphragm, a fifth lens, a sixth lens and a seventh lens which are disposed in order from an object side. the first, second, third and sixth lenses are negative meniscus lenses, and the fourth, fifth and seventh lenses are positive lenses. the fifth lens is a glass lens, and the second, third, fourth, sixth and seventh lenses are plastic lenses. the sixth lens and the seventh lens constitute a cemented lens. when a center curvature radius on an image side face of the fifth lens is r52 and a focal length of an entire wide angle lens is f0, the center curvature radius r52 and the focal length f0 satisfy the following conditional expression:

Nidec Sankyo Corporation

. . ... Nidec Corporation

04/05/18 / #20180097418

Coils for electrical machines

A coil for an electrical machine having a stator with salient poles is disclosed. The coil has first and second coil sides joined by a respective coil end at each end to define a space for accepting a salient pole. ... Nidec Corporation

04/05/18 / #20180095237

Wide angle lens

A wide angle lens includes a first to a third lenses, a diaphragm, a fourth to a sixth lenses disposed in order from an object side. The fourth lens is a glass lens, and the second lens, the third lens, the fifth lens and the sixth lens are plastic lenses. ... Nidec Corporation

03/29/18 / #20180090166

Spindle motor and disk drive apparatus

In a spindle motor, a cup portion of a base member includes a cylindrical portion coaxial or substantially coaxial with a central axis extending in a vertical direction and a bottom plate portion defined integrally with the cylindrical portion, and located to close a lower portion of the cylindrical portion. The bearing mechanism is inside of the cup portion and an outer circumferential surface of the bearing mechanism and an inner circumferential surface of the cylindrical portion include a first adhesive layer located therebetween. ... Nidec Corporation

03/29/18 / #20180088297

Lens unit and manufacturing method for lens unit

A lens unit with multiple lenses includes at least a glass lens arranged in an optical axis direction and a lens barrel holding the lenses. The lens barrel includes a lens holder holding the glass lens. ... Nidec Corporation

03/29/18 / #20180087992

Hydraulic pressure sensor attachment structure

A guide protrusion includes first walls protruding upwards from an upper face of a body, facing each other across an opening in a first direction, and first protrusions protruding from each first wall toward the other. A receptive portion between the first walls has a first opening, opening to one side in a second direction orthogonal to the first direction. ... Nidec Corporation

03/29/18 / #20180087991

Oil-pressure-sensor attachment structure

In an oil-pressure-sensor attachment structure according to an aspect of the invention, an oil channel body includes a lower body and an upper body arranged at an upper side of the lower body in a superposed manner. The attachment structure includes the upper body, a sensor case, and a connection member including an electrical connection portion that electrically connects an external power supply with a sensor main body. ... Nidec Corporation

03/29/18 / #20180087990

Oil pressure sensor attaching structure

According to an aspect of the present invention, there is provided an oil pressure sensor attaching structure in which a plurality of guide protrusion portions are disposed with a gap in a circumferential direction and surround an oil passage opening portion. The guide protrusion portions have an arc-shaped wall portion and a protrusion portion. ... Nidec Corporation

03/29/18 / #20180085688

Control valve apparatus

A strip-shaped filter in the shape of a circular arc is arranged at a port opening portion of an oil passage, the port opening portion being in maximum proximity to a spool hole portion or a valve element, to prevent a contaminant in the oil passage from reaching the spool hole portion or the valve element. A groove portion is arranged to extend in a circumferential direction in a wall surface of the upper body which defines the spool hole portion. ... Nidec Corporation

03/22/18 / #20180083521

Manufacturing method of linear actuator, and linear actuator

A method for manufacturing a linear actuator may include providing a first element and a second element to a stationary element; supporting the movable element with the first element by the intermediary of the spring member; setting a distance dimension between the movable-element-side facing surface and the stationary-element-side facing surface with a specified dimension corresponding to a length dimension of the damper members, by way of making a relative displacement between the first element and the second element in the moving direction, in a situation where a clearance is formed between the first element and the second element in the moving direction; and fixing the first element and the second element to each other by use of an adhesive, in the situation of having the clearance between the two.. . ... Nidec Corporation

03/22/18 / #20180082087

Card processing device

A card processing device may include a moving part having a support member and a presser member, the moving part being structured to move in the thickness direction of the card; a holding member; an abutting member; a first urging member urging the abutting member in the ejecting direction; a second urging member urging the moving part; and a drive source to move the moving part. In inserting the card, the holding member may slide from a hold position to a retreated position, and the moving part may move from an insertable and ejectable position to an insertion completion position. ... Nidec Corporation

03/22/18 / #20180079294

Wheel unit

A wheel unit includes a motor, a pinion gear fixed to a rotating portion of the motor, a wheel including an annular ground surface and rotating around a final gear support shaft, and a final gear disposed on one side in an axial direction with respect to the wheel. The wheel unit further includes a speed reduction mechanism which decelerates rotation of the pinion gear and transmits the rotation to the final gear and a gear case which accommodates the pinion gear. ... Nidec Corporation

03/22/18 / #20180079293

Wheel unit

A wheel unit includes a motor, a pinion gear fixed to a rotating portion of the motor, a wheel including an annular ground surface and rotating around a final gear support shaft, and a final gear disposed on one side in an axial direction with respect to the wheel. The wheel unit further includes a speed reduction mechanism which decelerates rotation of the pinion gear and transmits the rotation to the final gear and a gear case which accommodates the pinion gear. ... Nidec Corporation

03/22/18 / #20180079292

Wheel unit

A wheel unit includes a motor, a pinion gear fixed to a rotating portion of the motor, a wheel including an annular ground surface and rotating around a final gear support shaft, and a final gear disposed on one side in an axial direction with respect to the wheel. The wheel unit further includes a speed reduction mechanism which decelerates rotation of the pinion gear and transmits the rotation to the final gear and a gear case which accommodates the pinion gear. ... Nidec Corporation

03/15/18 / #20180076702

Vibration motor

A vibration motor includes a stationary portion, a vibrating body, an elastic member, and a damper member. A back yoke is disposed on a magnet. ... Nidec Corporation

03/15/18 / #20180076696

Motor and method for manufacturing the same

A stationary portion of a motor includes a stator core including teeth, an insulator covering a surface of the stator core, a coil including a conductive wire, a housing, and a circuit board. The housing includes a cylindrical portion in which the stator core is fixed to the outer circumference thereof and a base portion extending from the cylindrical portion radially outward. ... Nidec Corporation

03/15/18 / #20180075263

Card reader

A card reader may include a card insertion port; a magnetoresistive (mr) sensor, and a disturbing magnetic field generator, wherein the card may include a magnetic stripe, and magnetic data recorded in the magnetic stripe may be arranged in a moving direction of the card inserted through the card insertion port. The mr sensor may include a first resistor and a second resistor separated by a distance which is less than a bit interval of magnetic data, in a case that “0” data are recorded in the magnetic stripe, in the moving direction of the card.. ... Nidec Corporation

03/15/18 / #20180071779

Vibration motor

A vibration motor includes a stationary portion, a vibrating body, an elastic member, and a damper member. The elastic member includes a first extending portion, a second extending portion, a first connection portion, a second connection portion, a third extending portion, a fourth extending portion, a third connection portion, a fourth connection portion, and a fifth connection portion. ... Nidec Corporation

03/15/18 / #20180071778

Vibration motor

In a vibration motor, a substrate is disposed on a base plate, a coil is disposed on the substrate, and a magnet is disposed so as to be accommodated in an inner peripheral side of the coil having an annular shape by vibration. A back yoke is disposed on the magnet, a weight is disposed on the back yoke, and a case accommodates the coil, the magnet, the back yoke, and the weight. ... Nidec Corporation

03/15/18 / #20180071777

Vibration motor

A vibration motor includes: a stationary portion which has a base plate, substrate, coil, and case; a vibrating body which has a magnet, back yoke, and weight and is supported by the stationary portion so as to be capable of vibrating in a vertical direction; and an elastic member. In a vibration motor, a substrate is disposed on a base plate, a coil is disposed on the substrate, and a magnet is disposed so as to be accommodated on an inner peripheral side of the coil having an annular shape by vibration. ... Nidec Corporation

03/15/18 / #20180071776

Vibration motor

A back yoke of a vibration motor has a rectangular top surface portion, a long side protrusion portion that protrudes downward from a long side portion of the top surface portion, and a short side protrusion portion that protrudes downward from a short side portion of the top surface portion. The short side protrusion portion has a protrusion amount smaller than that of the long side protrusion portion. ... Nidec Corporation

03/08/18 / #20180069457

Stator unit, motor, and fan motor

The motor has a stator unit covered with a resin. The stator unit has a stator core, a coil, a circuit board, and an insulator. ... Nidec Corporation

03/08/18 / #20180066665

Motor and fan including the motor

A motor includes a stationary portion, and a rotary portion having a center axis, and rotatably supported with respect to the stationary portion so as to rotate about the center axis. The stationary portion includes an armature, a circuit board arranged below the armature, and a base portion configured to support the armature and the circuit board. ... Nidec Corporation

03/01/18 / #20180062492

Vibration motor

A vibration motor includes a shaft having a center axis extending in one direction; a stationary portion having a coil wound in a circumferential direction of the center axis; a vibrating body arranged outside the shaft in a radial direction and being vibratable in the one direction relative to the stationary portion; and at least a single coil spring arranged between the stationary portion and the vibrating body, and wound in the circumferential direction. The vibrating body includes a weight and a magnet arranged inside the coil in the radial direction, in the one direction with respect to the weight. ... Nidec Corporation

03/01/18 / #20180060678

Vehicle-mounted image recognition apparatus and method of manufacturing the same

In a vehicle-mounted image recognition apparatus, a resolution of an image projected on an imaging plane of an image sensor is different at a position away from a center between a circumferential direction and a radial direction. To make a circumferential resolution higher than a radial resolution, at least a lower half of the imaging plane is located closer to a circumferential focus than a middle of a radial focus and the circumferential focus at a position off the optical axis center of the image projected on the image sensor through the image-forming optical system. ... Nidec Corporation

03/01/18 / #20180057355

Sensor attachment structure

A groove is provided at an outer side of an outer wall of a pressure sensor in a radial direction, and opens at one end side in an axial direction of the pressure sensor. A horizontally extending stopper is provided at an inner wall of a sensor accommodation recessed portion. ... Nidec Corporation

03/01/18 / #20180056329

Vibration motor

A vibration motor includes a shaft, a stationary portion, a vibrating body, and an elastic member. The vibrating body includes a weight, first magnets, magnetic bodies, and one or more second magnets. ... Nidec Corporation

02/22/18 / #20180054102

Motor

This motor includes a stationary portion including a stator; and a rotating portion supported to be rotatable about a central axis extending in a vertical direction with respect to the stationary portion, and including a shaft arranged to extend along the central axis. The stationary portion includes a bearing arranged to rotatably support the shaft, and a base portion arranged to hold the stator. ... Nidec Corporation

02/22/18 / #20180053534

Base unit and disk drive apparatus

A base member includes a recessed portion arranged to extend in radial directions and recessed upward from a lower surface of the base member, the radial directions being directions perpendicular to a vertical direction; and a hole portion arranged to pass through the recessed portion in the vertical direction. The recessed portion includes a recessed portion loop-shaped surface being a loop-shaped surface perpendicular to the vertical direction. ... Nidec Corporation

02/15/18 / #20180048221

Linear actuator and method for manufacturing linear actuator

A linear actuator may include a movable element; a stationary element; and a damper member inserted between a movable-element-side facing suface of the movable element and a stationary-element-side facing surface of the stationary element. The stationary element may include a first element structured to support the movable element via a spring member in such a way as to be movable, and a second element comprising the stationary-element-side facing surface and overlapping with the first element from a side opposite to the movable element in the moving direction. ... Nidec Corporation

02/15/18 / #20180048212

Direct drive rotor with metal coupler

A rotor for an outer rotor-type motor is provided. The rotor includes a metallic coupler and a polymeric frame molded over at least part of the metallic coupler.. ... Nidec Corporation

02/15/18 / #20180048208

Motor and disk drive apparatus

A motor includes a stationary unit and a rotary unit. The stationary unit includes a stator, a base portion having at least one hole extending in the up-down direction, and a flexible wiring substrate. ... Nidec Corporation

02/15/18 / #20180045308

Device and a method for distributing torque in a worm gear assembly

A worm gear assembly may include an input shaft having a first and second screw formed axially thereon, a first torque transfer unit comprising a first worm wheel operatively coupled to the first worm screw, a first radial pinion coaxially affixed to the first worm wheel, and a first axial crown wheel operatively coupled to the first radial pinion, and a second torque transfer unit comprising a second worm wheel operatively coupled to the second worm screw, a second radial pinion coaxially affixed to the second worm wheel, and a second axial crown wheel operatively coupled to the second radial pinion, wherein the first radial pinion is in meshed interface with the second radial pinion, and wherein torque differences between the first axial crown wheel and the second axial crown wheel are transmitted at least in part through said meshed interface.. . ... Nidec Corporation

02/08/18 / #20180039159

Blade driving device

To enable continuous operational control of the blade member with high resolution and good accuracy, even when achieving miniaturization and thickness reduction in a blade driving device, through enabling smooth movement of a movable member in a blade driving device. A blade driving device 1 comprises: a base member 2 that has an opening 2a; one or a plurality of blade members 3 that operate so as to advance into the opening 2a or withdraw from the opening 2a; a driving member 4 that moves within a plane that is perpendicular to the optical axis that passes through the opening 2a, to drive the blade member 3; and supporting members 7 that are provided between the base member 2 and the driving member 4, so as to provide sliding support or elastic support of the driving member 4 in a state that is separated from the base member 2.. ... Nidec Corporation

02/08/18 / #20180039158

Blade driving device

To enable achievement of a reduction in the thickness in a blade driving device that includes a driving member, and to enable a reduction in size of an installation area in a blade driving device that includes a driving member. The blade driving device 1 comprises a base member 2 that has an opening 2a, one or more blade members 3 that operate so as to advance into the opening 2a or withdraw from the opening 2a, and a driving member 4 that is supported on the base member 2 and that moves within a plane that is perpendicular to an optical axis that passes through the opening 2a, for driving the blade member, wherein the driving member 4 is disposed at a position that overlaps the blade member on the periphery of the opening 2a.. ... Nidec Corporation

02/08/18 / #20180038770

Sensor attachment structure

A sensor case includes a body portion having a circular horizontal section. An upper body 1 includes an accommodation space 4 having a wall surface having a circular horizontal section, and the body portion is inserted in the accommodation space 4 such that the body portion is capable of rotating about a central axis thereof extending in a vertical direction. ... Nidec Corporation

02/01/18 / #20180034342

Electric machine

An electric machine with a casing includes a circuit board arranged inside the casing and on which an electronic component is mounted, and a sealing member covering the circuit board. The sealing member includes, at a part of a boundary surface thereof coming into contact with air, a first inclined surface inclined downwardly in a vertical direction. ... Nidec Corporation

02/01/18 / #20180034141

On-vehicle radar device and vehicle

An on-vehicle radar device includes a mount and an antenna configured to transmit a transmission wave from an inner side of laminated glass, which includes an innermost glass layer, an outermost glass layer, and an intermediate resin layer, and receive a reflected wave. The antenna includes a transmitting antenna. ... Nidec Corporation

02/01/18 / #20180032764

Card reader

Provided is a card reader capable of preventing the illegitimate acquisition of data from the card reader even when a criminal attempts to obtain data illegitimately from the card reader without removing the card reader from a host device. This card reader is equipped with a data signal pattern for reporting signals of data read from a card or for reporting signals of data recorded on the card, and a failure detection pattern for detecting that the card reader has undergone a wire disconnection or has short-circuited. ... Nidec Corporation

02/01/18 / #20180031803

Optical unit

An optical unit is provided. In the optical unit, a holder holding part is provided with a guide part determining a first center axial line that is a reference and the tube part is provided with a guided part determining a second center axial line coincided with an optical axis of the lenses. ... Nidec Corporation

02/01/18 / #20180031003

Impeller and motor

An impeller includes a hub rotated about an up-down axis and inclined blades disposed circumferentially on a hub's outer circumferential surface. The outer circumferential surface includes a first surface including a portion axially overlapping the blade above its joined portion to the blade, a second surface including a portion axially overlapping the blade below the joined portion, and a connecting portion connecting a rotating-direction rear end of the first outer circumferential surface and a rotating-direction front end of the second outer circumferential surface. ... Nidec Corporation

01/25/18 / #20180027155

Imaging device, optical device provided with same, electronic device provided with same, and method for producing imaging device

An imaging device has a lens holding member; a base member for holding the lens holding member; and a substrate to which the base member is secured. The lens holding member holds at least one lens. ... Nidec Corporation

01/25/18 / #20180026511

Vibration motor and method for manufacturing the same

A vibration motor includes a stationary portion including a casing and a coil; a vibrating body including a weight and a magnet, the vibrating body being supported so as to be vibratable in one direction relative to the stationary portion; and an elastic member located between the stationary portion and the vibrating body. The magnet is disposed above the coil in an up-down direction that is perpendicular to the one direction. ... Nidec Corporation

01/25/18 / #20180023469

Sensor attachment structure

A sensor casing includes a lower case and an upper case that is fixed to an upper part of the lower case. A valve body includes an upper body including an accommodation space in which a sensor casing is disposed and a lower body in which an oil passage is formed. ... Nidec Corporation

01/25/18 / #20180021812

Vibration motor

A vibration motor includes a stationary portion including a casing and a coil; a vibrating body including a weight and a magnet, the vibrating body being supported so as to be vibratable in one direction relative to the stationary portion; an elastic member located between the stationary portion and the vibrating body; and a top plate portion that is disposed above the vibrating body in an up-down direction that is perpendicular to the one direction. The magnet is disposed above the coil, and the top plate portion faces the magnet in the up-down direction. ... Nidec Corporation

01/18/18 / #20180019645

Motor

A motor includes a rotating portion with a shaft extending along a rotation axis and a rotor that rotates together with the shaft, a stationary portion with a stator located radially outside of the rotor and a magnetic sensor located above the rotor to detect a rotational position of the rotor. The rotor includes a rotor core, a rotor magnet located radially outside of the rotor core and under the magnetic sensor, in contact with the rotor core or located opposite to the rotor core with a first gap therebetween. ... Nidec Corporation

01/18/18 / #20180019633

Motor

A motor includes a bearing portion including upper and lower bearings, a shaft rotatably supported by the bearing portion, a rotor magnet that rotates together with the shaft, an armature radially outside the rotor magnet, a casing that fixes the armature and holds the upper and lower bearings at a radial center thereof, and a cover. The armature includes a stator core including magnetic pole teeth, an insulator that covers at least upper and lower surface of each of the magnetic pole teeth, and coils. ... Nidec Corporation

01/04/18 / #20180006591

System and method for optimizing flux regulation in electric motors

A system and method for dynamically optimizing flux levels in electric motors based on estimated torque. Motor parameters and motor equations are used to estimate operating characteristics and to set current and voltage limits which define an optimal flux operating range for a given speed and torque of the motor. ... Nidec Corporation

01/04/18 / #20180006519

Insulative insert for motor controller can

A motor assembly includes a motor, a controller for controlling at least one aspect of operation of the motor, a housing, and an insulation system. The housing defines a motor chamber at least substantially receiving the motor and a controller chamber at least substantially receiving the controller. ... Nidec Corporation

01/04/18 / #20180001348

Vibrating actuator

A vibration actuator having a plate-shaped body made from a magnetic material that has a planar supporting face; a movable element that vibrates in the axial direction along the supporting face, in direct contact, or partial contact through contacts, with a plurality of locations of the supporting face; an elastic member for elastically repelling the vibration of the movable element; and a coil, wherein a winding part is secured to the plate-shaped body, and is perpendicular, in relation to the axial direction, to a gap between the movable element and the plate-shaped body; wherein the movable element has a magnetic flux, which passes through the winding part of the coil, formed between the movable element and the plate-shaped body, and is provided with a magnet for magnetically attracting the movable element toward the supporting face side.. . ... Nidec Corporation

12/28/17 / #20170374247

Coil unit and photographing optical device

A coil unit may include coils and a coil holding member. An outer peripheral face of the coil holding member includes two side-face pairs, each of which includes a pair of parallel side faces. ... Nidec Corporation

12/28/17 / #20170373551

High power density motor having bridged spoked rotor and prewound bobbins for stator

A motor includes a stator and a rotor. The rotor is rotatable about an axis. ... Nidec Corporation

12/28/17 / #20170372855

Trigger switch

A lock member includes a fit portion, an inclined portion and a contacting portion. The fit portion is fitted with a projecting portion of a trigger to maintain an off-lock state. ... Nidec Corporation

12/28/17 / #20170370445

Speed reducer and actuator

A speed reducer includes a sun gear, planetary gears, a fixed part, an output part, a first bearing, and a second bearing. The sun gear rotates relative to the fixed part at a first rotation speed. ... Nidec Corporation

12/28/17 / #20170370274

Coolant pump with integrated closed-loop control

A coolant pump for an internal combustion engine (ice) in a vehicle with a central engine control, having a pump shaft that drives an impeller for pumping a coolant. An axial piston pump operated via a wobble plate on a rear face of the impeller, conducts part of the pumped coolant away to a hydraulic circuit that extends from the axial piston pump via a proportional valve back to the pumped coolant and has a branch-off between the axial piston pump and the proportional valve as the hydraulic actuator. ... Nidec Corporation

12/28/17 / #20170367550

Blower apparatus and vacuum cleaner

A blower apparatus according to an exemplary embodiment of the present invention includes a motor including a shaft arranged to extend along a central axis extending in a vertical direction, and a bearing arranged to rotatably support the shaft; an impeller coupled to the shaft on an upper end side of the shaft; an impeller housing arranged to house the impeller, and including an air inlet on an upper side; a plurality of stationary vanes arranged on a lower side of the impeller housing; a cylindrical first ring arranged radially inside of the stationary vanes; and a cylindrical second ring arranged radially outside of the stationary vanes, and fixed to the impeller housing. The stationary vanes, the first ring, and the second ring are defined by a single monolithic member, and together define at least a portion of a stationary vane support portion.. ... Nidec Corporation

12/21/17 / #20170366130

System and method for improving the operation of electronically controlled motors

An electrical motor controller changes the pwm frequency that is used by a motor driver to form the fundamental frequency and voltage magnitude for the electrical power delivered to an electrical motor. The electrical motor controller compares a signal generated by a first sensor that indicates an output speed of the motor to a predetermined speed threshold and compares a signal generated by a second sensor that corresponds to phase currents in the electrical motor to a predetermined motor power threshold. ... Nidec Corporation

12/21/17 / #20170366063

Motor

A motor includes a stationary unit and a rotary unit. The rotary unit includes a shaft, a magnet, and a rotor holder for holding the magnet on an inner circumferential surface thereof the rotor holder includes a top surface portion extending in a direction orthogonal to a center axis, a first surface portion extending radially outward from a radial outer end portion of the top surface portion, a second surface portion positioned axially below the top surface portion and having an outer diameter larger than an outer diameter of the first surface portion, a first connecting portion arranged to connect a radial outer end portion of the first surface portion and a radial outer end portion of the second surface portion, and a second connecting portion arranged to connect the radial outer end portion of the top surface portion and a radial inner end portion of the second surface portion.. ... Nidec Corporation

12/21/17 / #20170366062

Motor

A motor includes a motor body part and a cap member. The motor body part includes a stationary unit, a rotary unit arranged to rotate about a center axis, and a bearing fixed to the stationary unit and arranged to rotatably support the rotary unit. ... Nidec Corporation

12/14/17 / #20170359006

Sensorless motor braking system

An electric motor control system includes a power inverter and control circuitry configured to control the power inverter either according to a target voltage in a voltage-based control mode or according to a target current in a current-based control mode. A controller is operable to switch operation of the control circuitry between the voltage-based control mode and the current-based control mode. ... Nidec Corporation

12/14/17 / #20170356467

Blower apparatus

This blower apparatus includes an air blowing portion including a plurality of flat plates arranged with an axial gap defined between adjacent ones of the flat plates; a motor portion arranged to rotate the air blowing portion; a clamper portion fixed to the motor portion; and a housing arranged to house the air blowing portion and the motor portion. The housing includes an air inlet and an air outlet. ... Nidec Corporation

12/14/17 / #20170356466

Blower apparatus

This blower apparatus includes an air blowing portion including a plurality of flat plates arranged with an axial gap defined between adjacent ones of the flat plates; a motor portion arranged to rotate the air blowing portion; and a housing arranged to house the air blowing portion and the motor portion. The housing includes an air inlet and an air outlet. ... Nidec Corporation

12/14/17 / #20170356465

Blower apparatus

This blower apparatus includes an air blowing portion including a plurality of flat plates arranged with an axial gap defined between adjacent ones of the flat plates; a motor portion arranged to rotate the air blowing portion; and a housing arranged to house the air blowing portion and the motor portion. The housing includes an air inlet and an air outlet. ... Nidec Corporation

12/14/17 / #20170356464

Blower apparatus

This blower apparatus includes an air blowing portion including a plurality of flat plates arranged with an axial gap defined between adjacent ones of the flat plates; a motor portion arranged to rotate the air blowing portion; and a housing arranged to house the air blowing portion and the motor portion. The housing includes an air inlet arranged to pass through a portion of the housing in an axial direction above the air blowing portion, and an air outlet arranged to face in a radial direction radially outside of the air blowing portion. ... Nidec Corporation

12/14/17 / #20170356463

Blower apparatus

This blower apparatus includes an air blowing portion, a motor portion, and a housing. The housing includes an air inlet and an air outlet. ... Nidec Corporation

12/14/17 / #20170356462

Blower apparatus

This blower apparatus includes an air blowing portion including a plurality of flat plates; a motor portion; and a housing. The housing includes an air inlet and an air outlet. ... Nidec Corporation

12/14/17 / #20170356461

Blower apparatus

This blower apparatus includes an air blowing portion, a motor portion, and a housing. The housing includes an air inlet and an air outlet. ... Nidec Corporation

12/14/17 / #20170356460

Blower apparatus

This blower apparatus includes an air blowing portion including a plurality of flat plates; a motor portion; and a housing. The housing includes an air inlet and an air outlet. ... Nidec Corporation

12/14/17 / #20170356459

Blower apparatus

This blower apparatus includes an air blowing portion including a plurality of flat plates arranged with an axial gap defined between adjacent ones of the flat plates; a motor portion arranged to rotate the air blowing portion; and a housing arranged to house the air blowing portion and the motor portion. The housing includes an air inlet and an air outlet. ... Nidec Corporation

12/14/17 / #20170356458

Blower apparatus

This blower apparatus includes an air blowing portion including a plurality of flat plates arranged with an axial gap defined between adjacent ones of the flat plates; a motor portion arranged to rotate the air blowing portion; and a housing arranged to house the air blowing portion and the motor portion. The flat plates include an air hole arranged to pass therethrough in an axial direction. ... Nidec Corporation

12/14/17 / #20170356455

Blower apparatus

This blower apparatus includes an air blowing portion including a plurality of flat plates arranged with an axial gap defined between adjacent ones of the flat plates; a motor portion arranged to rotate the air blowing portion; and a housing arranged to house the air blowing portion and the motor portion. The housing includes an air inlet and an air outlet. ... Nidec Corporation

12/14/17 / #20170354992

Linear vibration motor

A linear vibration motor has a cover body made from a magnetic material having a planar inner surface (supporting face); a movable element that comprises a magnet and a weight, and that vibrates in the axial direction along the inner surface; an elastic member elastically repelling the vibration of the movable element; and a coil, secured in relation to the cover body, and wherein a winding part that is perpendicular, in respect to the axial direction, to a gap between the movable element and the cover body, where supporting portions for supporting the movable element through the elastic member are provided on both axial-direction end portions on the cover body.. . ... Nidec Corporation

12/07/17 / #20170353663

Optical unit with shake correction function

An optical unit with a shake correction function may include a unit with a swing mechanism having an optical module and a swing drive mechanism structured to swing the optical module, a rolling drive mechanism including a magnetic drive mechanism structured to turn the unit with the swing mechanism in a direction different from a swing direction by the swing drive mechanism, a connection member which connects the unit with the swing mechanism with a turning shaft of the rolling drive mechanism, and a support member which supports the rolling drive mechanism. The connection member includes an abutting part integrally turned with the unit with the swing mechanism and the support member includes a position restriction part which restricts a movable range of the abutting part.. ... Nidec Corporation

12/07/17 / #20170353090

Stator unit, motor, and blower

A stator unit includes a base member including a bearing housing extending along a rotation axis, a stator fixed to an outer circumferential surface of the bearing housing, and a molding resin part covering the stator. The stator includes a stator core having teeth protruding radially outward, an insulator for partially covering a surface of the stator core, and coils. ... Nidec Corporation

12/07/17 / #20170353076

Motor

A circuit board is in the shape of a strip and includes: in one longitudinal end portion thereof, power connection portions connected to an external power supply; in another longitudinal end portion thereof, land portions to which portions of conducting wires drawn out downwardly of a base portion are connected; and pattern portions electrically connected to the power connection portions and the land portions. The land portions include a first land portion, and a second land portion arranged adjacent to the first land portion. ... Nidec Corporation

12/07/17 / #20170353068

Motor and disk drive apparatus

A hub of this motor includes a hub annular portion being annular and arranged above a stator, and a flange portion arranged to extend radially outward from the hub annular portion, and including an upper surface on which an annular member is arranged. A yoke includes a first yoke cylindrical portion to which a magnet is fixed; a yoke annular portion arranged to extend radially inward from an upper end of the first yoke cylindrical portion, and including an upper surface arranged opposite to a lower surface of the hub; and a second yoke cylindrical portion arranged to extend axially upward from a radially inner end portion of the yoke annular portion. ... Nidec Corporation

12/07/17 / #20170353040

Battery charger monitor with charge balancing between batteries in a battery supply

A battery charger monitors the voltages across individual batteries in a battery system during recharging of the batteries. The charger identifies a least voltage measurement and identifies the batteries in the battery system that have a voltage measurement that is a predetermined voltage differential above the least voltage measurement. ... Nidec Corporation

12/07/17 / #20170351880

Card reader

A card reader may include a card passage; a shutter member to close the card passage; a magnetic head on a rear side of the shutter member reads or records data in a magnetic strip of a card; an electrostatic capacitance sensor on the rear side or the shutter member; a first guide member which structures at least a part of a face on a first direction side of the card passage when one side in a thickness direction of the card passing the card passage is referred to as a first direction; and a second guide member which structures at least a part of a face on a second direction side of the card passage. The first guide member may include insulating material and the second guide member may include conductive material. ... Nidec Corporation

12/07/17 / #20170349207

Motor drive device and electric power steering device

A motor drive device includes a plurality of control systems that individually supply drive currents to a plurality of coil groups included in a motor. The motor drive device independently sets the current command values for the respective control systems. ... Nidec Corporation

11/30/17 / #20170345288

Motor control device and motor control method

One exemplary embodiment of the present invention is a motor control device configured to control rotation of a motor based on a drive signal input from an input terminal wherein the motor control device extracts two or more pieces of information of first drive information indicating a drive state or a drive stop state of the motor, second drive information indicating a rotation direction of the motor, third drive information indicating whether the motor is in a forced stop state, and fourth drive information indicating a rotational speed of the motor from at least one of a duty ratio, a voltage, and a frequency in the single drive signal, and controls the motor.. . ... Nidec Corporation

11/30/17 / #20170344159

Inspecting apparatus

An inspection apparatus is provided with a holder configured to set an inspection target thereon, the inspection target configured to detect a contact position on the inspection target touched by a human finger; pseudo finger(s) configured to be detected as the human finger upon contact with the inspection target; a positioner configured to move the pseudo finger(s) relative to the inspection target and to change the contact position of the pseudo finger(s) relative to the inspection target; a memory configured to store, respectively, a value of a pressing force in a range of pressing forces said range including a zero pressing force for each of the pseudo finger(s) on the inspection target; a controller configured to regulate the pressing force for pseudo finger(s) of the pseudo finger(s) based on the respective value; and a sensor configured to acquire an electric signal output from the inspection target.. . ... Nidec Corporation

11/30/17 / #20170343393

Geared motor and pointer type display device

The geared motor and pointer display device are provided with a stopper mechanism which restricts the range of movement of the trailing-side gear when the trailing-side gear rotates in a counter-clockwise direction. Of the stopper touching part and the part touched by the stopper that together constitute the stopper mechanism, the stopper touching part comprises the end of a gear-side protrusion which is integrally formed with the middle part at the outer peripheral surface of the middle part of the trailing-side gear. ... Nidec Corporation

11/30/17 / #20170343382

Position estimation method and position control device

A method of position estimation including: a signal detection step in which n (where n is an integer of 3 or more) sensors each detect a magnetic field which is in accordance with a position of a mover and output a detection signal as an electrical signal, the detection signals being displaced in phase by an angle obtained by dividing 360 degrees by n; a crossing detection step in which a crossing detection section sequentially detects a crossing at which each detection signal having been output through the signal detection step crosses another; a subdivision detection step in which a subdivision detection section detects a portion of the detection signal that connects from a crossing to another crossing which is adjacent to that crossing, as one or more subdivision signals; and a line segment joining step in which a line segment joining section sequentially joins the subdivision signals and estimates the position of the mover based on the plural subdivision signals having been joined, to generate an estimated position value signal.. . ... Nidec Corporation

11/30/17 / #20170342991

Fan motor

A fan motor includes a motor including a stationary portion and a rotating portion arranged to rotate about a rotation axis extending in a vertical direction; an impeller including a plurality of blades, and arranged to rotate together with the rotating portion; a housing arranged to house the motor and the impeller therein; and a plurality of lead wires each of which is connected to the motor and is arranged to extend radially outward. The housing includes a tubular portion being tubular, and arranged to extend from an inlet side to an outlet side along the rotation axis, and house at least a portion of the impeller therein; a flange portion arranged to project radially outward from at least a portion of the tubular portion; a lead wire outlet defined in at least a portion of the tubular portion, and arranged to pass through the tubular portion in a radial direction; and a vertical groove arranged to be in communication with the lead wire outlet, and arranged to pass through the flange portion in an axial direction. ... Nidec Corporation

11/23/17 / #20170338701

Electric motors

An electric motor comprising a stator having a stator cavity with an axis extending in a longitudinal direction, said stator cavity having a stator inlet for receiving a fluid and a stator outlet for discharging said fluid, a rotor arranged inside the stator cavity and rotatable around said axis, a tubular sleeve, arranged between the stator and the rotor, coaxial with said axis, and attached to the stator through attachment members. The tubular sleeve is spaced from the stator by a first tubular gap, and from the rotor by a second tubular gap, the first tubular gap extends along the longitudinal direction between a first gap inlet and a first gap outlet, the second tubular gap extends along the longitudinal direction between a second gap inlet and a second gap outlet, the first and second gap inlets are in direct fluid communication with the stator inlet, and the first and second gap outlets are in direct fluid communication with the stator outlet, such that the fluid entering the stator cavity at said stator inlet divides into a first fluid flow and a second fluid flow respectively flowing through the first tubular gap and the second tubular gap and exiting the stator cavity at said stator outlet, the tubular sleeve is made of a thermal insulating material, thereby thermally insulating the first tubular gap from the second tubular gap.. ... Nidec Corporation

11/23/17 / #20170335844

Gerotor pump

A gerotor pump includes a rotor wherein only on the face wall of the rotor that lies adjacent to a pressure kidney and a suction kidney, a lubrication surface inclined in the direction of rotation of the rotor, relative to the surface plane of the face wall of the rotor, is disposed on each tooth, in each instance, over its tooth height, either starting directly in the center tooth plane or starting “offset” ahead of the center tooth plane in the direction of rotation of the rotor, which surface is formed from a level surface or multiple, always level partial surfaces that follow one another, which enclose an angle of inclination relative to the surface plane of the face wall of the rotor, in each instance, which angle lies in the range from 0.2° to 7°, in each instance.. . ... Nidec Corporation

11/16/17 / #20170332466

Vehicle indicator circuit having controlled backlighting

Indicator circuit having a backlight and an indicator light associated with a graphical element. The graphical element is adapted to be illuminated by the indicator light for indicating an active vehicle function as well as backlit by the backlight. ... Nidec Corporation

11/16/17 / #20170331412

System and method for detecting loss of input phase by sensing before power rectifier

A system for detecting a decrease in or loss of an input phase to a motor. A power rectifier rectifies and combines three input voltages to produce an output voltage to power the motor. ... Nidec Corporation

11/16/17 / #20170331341

Motor

Provided is a motor including a shaft; two rotors attached to the shaft and spaced from each other in an axial direction by a predetermined distance; a stator arranged between the two rotors; a busbar unit arranged on one axial side of at least one of the two rotors, and arranged to hold a busbar; and a housing arranged to hold the stator and house the two rotors therein. The stator includes a plurality of cores arranged in a circumferential direction, and coils wound around the cores. ... Nidec Corporation

11/16/17 / #20170328994

Radar system

A wide angle of a range of a field of view of a radar is handled with a wider reception interval. There is provided a radar system which converts a reception signal into digital data using a receiving array to perform sensing through arithmetic processing, the radar system including: the receiving array composed of three or more receiving systems; and at least two transmitting antennas having directional properties each of which is in horizontal symmetry and which are different in beam width, wherein the transmitting antennas different in directional property alternately perform transmissions, and a region of an arrival wave is determined based on a difference in measurement between reception levels corresponding to the individual transmissions. ... Nidec Corporation

11/16/17 / #20170328285

Slotless brushless motor-driven throttle valve device, engine, and vehicle

The present invention provides a compact throttle valve device with good valve responsiveness and small unnecessary vibrations, an engine, and a vehicle. A slotless brushless motor-driven throttle valve device has a throttle body provided with a tubular portion in which an intake air passage is formed, a throttle valve disposed in the tubular portion, and a slotless brushless motor serving as a drive motor for performing opening/closing drive for the throttle valve. ... Nidec Corporation

11/16/17 / #20170325645

Suction nozzle and electric vacuum cleaner including the same

A suction nozzle of an electric vacuum cleaner including an electric blower, includes a suction inlet; an outlet; a suction passage extending along a center line joining a middle of the suction inlet in the longitudinal direction and a middle of the outlet in the longitudinal direction to connect the suction inlet and the outlet; and partition walls arranged in the suction passage to extend from the suction inlet side to the outlet side. The suction passage includes a main passage and division passages arranged on both outer sides of the main passage. ... Nidec Corporation

11/16/17 / #20170325643

Suction unit

Provided is a suction unit to be provided in an electric vacuum cleaner including an electric blower. The suction unit includes a suction inlet arranged to extend in a longitudinal direction, and arranged opposite to a surface to be cleaned; a connection opening to be connected to the electric blower; a suction passage arranged to extend along a center line joining a middle of the suction inlet in the longitudinal direction and a middle of the connection opening in the longitudinal direction to connect the suction inlet and the connection opening; and a plurality of first partition walls each of which is arranged in the suction passage, and is arranged to extend from a side on which the connection opening is defined to a side on which the suction inlet is defined. ... Nidec Corporation

11/09/17 / #20170324313

Motor

Provided is a motor having a rotary unit includes a shaft extending along the center axis, an armature core attached to the shaft and having six teeth radially extending toward a radial direction, a coil group of 6·n (however, n is 1 or 2) concentrated winding coils installed at the six teeth, using a coil by concentratedly winding a lead wire around one teeth as a concentrated winding coil, and a commutator electrically connected to the coil group. The stationary unit includes a pair of field magnets having same polarity facing each other, having the armature core disposed therebetween and a housing having a cylindrical yoke accommodating the pair of field magnets, wherein in the yoke, a pair of portions facing each other between the pair of magnets in a circumferential direction is a pair of magnetic poles directly facing the teeth of the armature core while having an opposite polarity to that of the magnetic poles, and a brush group contacting the commutator.. ... Nidec Corporation

11/09/17 / #20170324300

Motor

A motor includes: a motor main body; a power board including a switching element and electrically connected to the motor main body; a control board electrically connected to the power board and disposed on an axial counter output side of the motor main body; a control board holder attached to the motor main body to hold the control board; a sensor magnet located on a counter output side of a stator and fixed to a shaft; a rotation sensor attached to the control board to face the sensor magnet; and a power board case directly or indirectly attached to the motor main body to hold the power board. The power board is positioned radially outward of the motor main body. ... Nidec Corporation

11/09/17 / #20170322476

Lens driving device

Disclosed is a lens driving device includes: a lens frame; a support frame that elastically supports the lens frame in the optical-axis direction through plate springs; a base support member that elastically supports the lens frame supported by the support frame, in a direction intersecting the optical axis, through support wires; and a driving unit that drives the lens frame in one or both of the optical-axis direction and the direction intersecting the optical axis. The plate springs include elastic arm sections, respectively, which project outward of a portion at which the support frame is attached; and wire attaching sections which are connected to the elastic arm sections, respectively. ... Nidec Corporation

11/09/17 / #20170321783

Traction motor assembly with gear-interconnected wheel and output shaft

Electric motors are disclosed. The motors are preferably for use in an automated vehicle, although any one or more of a variety of motor uses are suitable. ... Nidec Corporation

11/09/17 / #20170321707

Fan motor

A fan motor includes an electric motor including a stationary unit and a rotary unit, an impeller including blades and rotating together with the rotary unit, a housing accommodating the electric motor and the impeller, lead wires connected to the electric motor and extending radially outward, and a guide member. The housing includes a tubular portion extending along a rotation axis and accommodating at least a part of the impeller, a flange portion protruding radially outward from at least a part of the tubular portion, a lead wire outlet port provided in at least a part of the tubular portion, and a vertical groove communicating with the lead wire outlet port and penetrating the flange portion in an axial direction. ... Nidec Corporation

10/26/17 / #20170310203

Actuator

An actuator may include a supporting body; a movable body; a connecting body connected to the movable body and the supporting body and having elasticity or viscoelasticity; a first magnetic driving circuit including first magnets and a first coil held by the supporting body and movable body, the first coil being opposed to the first magnets in a first direction, and the first magnetic driving circuit generating driving the movable body in a second direction which perpendicularly intersects with the first direction; and a second magnetic driving circuit including second magnets and a second coil held by the supporting body or the movable body, the second coil being opposed to the second magnets in the first direction, and the second magnetic driving circuit driving the movable body in a third direction which perpendicularly intersects with the first direction and crosses the second direction.. . ... Nidec Corporation

10/26/17 / #20170307841

Imaging device, optical device, electronic device, vehicle, and production method for imaging device

An imaging device has a lens group; a lens barrel for holding the lens group; a base member for holding the lens barrel; an imaging element; a securing plate that faces at least a portion of the base member in a state wherein the imaging element is secured; and a coil spring for pressing the lens barrel to produce a state wherein a male threaded portion of the lens barrel is pressed against a female threaded portion of the base member.. . ... Nidec Corporation

10/12/17 / #20170293778

Card reader

A card reader may include card insertion port; a plurality of types of pulling-out detection mechanisms; and a pulling-out prevention mechanism. The pulling-out prevention mechanism may include a lock member having a prevention part configured to contact with the card and prevent pulling-out of the card; and a moving mechanism structured to move the lock member between a contact position and a retreated position. ... Nidec Corporation

10/12/17 / #20170293777

Mr sensor and card reader

An mr sensor structured to detect whether or not magnetic data are recorded in a magnetic stripe of a card having first and second tracks may include a first resistor and a second resistor serially-connected with each other and disposed at positions where the first track is passed; and a third resistor and a fourth resistor serially-connected with each other and disposed at positions where the second track is passed. The second resistor and the fourth resistor may be connected with a power supply, and the first resistor and the third resistor may be ground grounded. ... Nidec Corporation

10/05/17 / #20170288523

Linear vibration motor

A linear vibration motor has a movable element including a magnet and a weight, and an elastic member are inserted into a frame. The frame supports the movable element so the movable element can freely slide axially; a coil fixed to the frame and drives the magnet axially; and an elastic member applying, to the movable element, an elastic force against the driving force of the magnet. ... Nidec Corporation

10/05/17 / #20170288497

Stator unit, motor, and parallel fan

This stator unit includes a cylindrical bearing housing arranged to extend along a central axis extending in a vertical direction; a base member arranged to fix the bearing housing; a stator fixed to an outer circumferential surface of the bearing housing; and a mold resin portion arranged to cover the stator. The stator includes a stator core including a plurality of teeth arranged to project radially outward; an insulator arranged to cover a portion of a surface of the stator core; and a plurality of coils each of which is defined by a conducting wire wound around a separate one of the teeth with the insulator therebetween. ... Nidec Corporation

10/05/17 / #20170288486

Spoked rotor for an electric motor

A rotor is provided for use in an electric motor. The rotor includes a shaft assembly rotatable about an axis. ... Nidec Corporation

10/05/17 / #20170288485

Spoked rotor with tapered pole segments

A rotor includes a plurality of arcuately arranged magnets and a core including a plurality of arcuately arranged pole segments alternating with the magnets, such that each of the magnets is at least in part interposed between adjacent pole segments. The pole segments at least in part cooperatively present an annular core face at least in part defining a core envelope. ... Nidec Corporation








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