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Minebea Mitsumi Inc patents


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

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "M" | Minebea Mitsumi Inc-related inventors


Axial fan

An axial fan comprises an impeller. The impeller comprises a hub and a plurality of blades disposed on an outer circumference of the hub. ... Minebea Mitsumi Inc

Strain gauge, load sensor, and method for manufacturing strain gauge

The strain gage includes: a substrate formed from a resin material: a resistor provided on a surface of the substrate; and a fusion layer provided on an opposite surface, to the surface on which the resistor is provided. The fusion layer is a thermoplastic polyimide layer. ... Minebea Mitsumi Inc

Grease composition, rolling bearing, and motor

A grease composition including: a base oil, a thickener, and 0.2 wt % or more of a dispersing agent. The dispersing agent includes at least one of a metal salt of a carboxylic acid, a metal salt of a polycarboxylic acid, and a copolymer of a carboxylic acid metal salt and a hydrocarbon compound, and the dispersing agent has an average particle diameter of 0.5 μm or more and 5 μm or less. ... Minebea Mitsumi Inc

Motor drive controller

A motor drive controller includes a control unit configured to control a motor drive unit, wherein the motor drive unit includes switching circuits for the three-phase windings, respectively, each of the switching circuits including two switching elements, wherein the control unit is configured to place a first switching element among the two switching elements in an “on” state for an energization period while placing a second switching element among the two switching elements in an “off” state, to place the second switching element alternately in the “on” and “off” states for the energization period while placing the first switching element in the “off” state, and to control the second switching element in an overlapping period during which two adjacent windings among the three-phase windings are placed in a same energization state, such that a magnitude of energization of the two adjacent windings changes gradually in a linear or nonlinear fashion.. . ... Minebea Mitsumi Inc

Motor driving control device and control method of motor driving control device

A motor driving control device comprises: an induced voltage detecting unit configured to detect an induced voltage of a motor; a controller for generating a pwm signal corresponding to an energization timing of the motor; and an inverter circuit for outputting a driving signal for driving the motor to the motor based on the pwm signal generated by the controller, wherein the controller comprises: a position detecting unit configured to detect a position detection signal containing a rising or falling edge representing a timing at which a position of a rotor is a predetermined position; measuring unit configured to measure a zero-cross point of the induced voltage of the motor based on a detected timing of the edge of the position detection signal, and stopping output of the driving signal only for a predetermined period containing the zero-cross point of the induced voltage of the motor to measure a pulse width of a regenerated voltage of the motor in the period; a calculating unit configured to calculate a zero-cross point of coil current of the motor based on a measurement result of the measuring unit; and adjusting unit for adjusting the energization timing of the motor based on a calculation result of the calculating unit, the predetermined period being a period of one cycle of the pwm signal.. . ... Minebea Mitsumi Inc

Planar illumination device and method of manufacturing planar illumination device

A planar illumination device according to an embodiment includes a light guide plate, a light source, a substrate, and a fixing member. The light guide plate causes light incident on a side surface to exit from a light exit surface. ... Minebea Mitsumi Inc

Motor drive control device and control method thereof

There is provided a motor drive control device comprising: a temperature detection unit to detect a temperature of a motor; a rotational frequency detection unit to detect a rotational frequency of the motor based on an output of a rotational position sensor provided in the motor; a supply voltage detection unit to detect a supply voltage; a load calculation unit to calculate a magnitude of a load of the motor based on a detection result of the supply voltage detection unit; an advance angle instruction unit to set an advance angle instruction value based on a detection result of the temperature detection unit, a detection result of the rotational frequency detection unit and a calculation result of the load calculation unit; and a motor drive unit to supply a driving electric power to the motor based on a speed instruction value relevant to a rotational speed of the motor and the advance angle instruction value set by the advance angle instruction unit.. . ... Minebea Mitsumi Inc

Motor drive controller and method for controlling motor

A motor drive controller includes: a motor drive unit; and a lock energization control circuit configured to control the motor drive unit to cause a lock current for holding the rotor at a predetermined lock position to flow from the motor drive unit to the drive coils for lock energization duration before rotation of the motor is started. The lock energization control circuit includes: a first lock energization unit that controls the motor drive unit such that a magnitude of the lock current becomes a first predetermined value when first predetermined duration has elapsed after the lock energization duration is started; and a second lock energization unit that controls the motor drive unit such that the magnitude of the lock current becomes a second predetermined value smaller than the first predetermined value when the lock energization duration is terminated after the first predetermined duration has elapsed.. ... Minebea Mitsumi Inc

Inner rotor-type permanent magnet motor with annular magnetic poles

A motor includes poles p having a remanence mr of 0.9 t or more, a coercivity hcj of 0.80 ma/m or more, and a maximum energy product (bh)max of 150 kj/m3 or more, which sets a center point pc of the magnetic poles in a circumferential direction on a rotor outer circumferential surface to a maximum thickness tmax, wherein when a line connecting the pc and a rotational axis center rc is pc-rc, a straight line connecting an arbitrary point px in the circumferential direction on the rotor outer circumferential surface and the rc is px-rc, an apex angle of the lines pc-rc and px-rc is θ, a number of pole pairs is pn, a circumferential direction magnetic pole end is pe, and a magnetic pole end biasing distance Δlpe of the circumferential direction magnetic pole ends pe is α×tmax (α is a coefficient).. . ... Minebea Mitsumi Inc

Planar illumination apparatus

A planar illumination apparatus according to an embodiment includes a light guide plate that includes an emission surface that emits light and a reflective surface that is a surface opposite to the emission surface and that reflects light, a light blocking member that defines an effective region of the emission surface, and a light source arranged so as to face a light incident side surface of the light guide plate. In a portion of the effective region beside a light blocking region of the light blocking member, a first reflective surface is provided that includes a region that is inclined in a direction approaching the emission surface side with an increase in a distance from the light incident side surface.. ... Minebea Mitsumi Inc

Planar illumination device

A planar illumination device according to an embodiment includes: a light source; a light guide plate including a light incident side surface on which the light source is arranged; a housing that includes side walls surrounding outer circumferential surfaces of the light source and the light guide plate; a first light blocking sheet that is adhered to an outer side surface and a top end surface of a side wall opposed to the light source among the side walls and that covers the top end surface, a top surface of the light source, and part of a top surface of the light guide plate; and a second light blocking sheet that is adhered to top end surfaces of the side walls other than the side wall to which the first light blocking sheet is adhered and that covers at least the top end surfaces. The first light blocking sheet includes a first light blocking layer that extends from the outer side surface of the side wall to which the first light blocking layer is adhered toward a side wall opposed to the side wall to which the first light blocking layer is adhered; and a second light blocking layer that extends from part of a top surface of the first light blocking layer toward a side wall opposed to the side wall on which the first light blocking layer is adhered.. ... Minebea Mitsumi Inc

Relay device and communication system

A relay device according to an embodiment includes a communication unit that receives information, transmitted from a plurality of communication terminals, and transmits the received information to a server; and a deriving unit that, in accordance with the total number of pieces of information received by the communication unit between a first point and a second point that elapses a predetermined time period, derives the timing information related to the transmission timing of information transmitted after the second point by at least one communication terminal among the communication terminals, and the communication unit transmits the timing information to the at least one communication terminal.. . ... Minebea Mitsumi Inc

Electronic device

In accordance with one aspect of the present disclosure, an electronic device includes a housing, a contact member attached to the housing, and a vibration generating device. The vibration generating device is fixed to the contact member or the housing. ... Minebea Mitsumi Inc

Vibration generating device and electronic device

In accordance with one aspect of the present disclosure, a vibration generating device includes a protruding part; a base provided with the protruding part and formed of a magnetic body; an annular coil surrounding the protruding part; a plate facing the base and formed of a magnetic body; and an elastic member supporting the plate with respect to the base. The plate and the base constitute magnetic circuit.. ... Minebea Mitsumi Inc

05/31/18 / #20180152088

Motor

A motor includes a rotational shaft, a bearing supporting the rotational shaft, a magnet including plural magnetic poles in a circumferential direction, a rotor core disposed inside the magnet, and a magnetic sensor. The magnet includes a projection portion projecting toward a side of the bearing with respect to the rotor core in a direction of the rotational shaft. ... Minebea Mitsumi Inc

05/31/18 / #20180152072

Resolver

Provided is a resolver including: a stator core including teeth; an insulator attached to the stator core; windings wound around the respective teeth; a terminal pin base formed integrally with an insulator and extending in a radial direction of the resolver; terminal pins arranged in the terminal pin base and having end parts of the respective windings connected thereto. A surface treatment layer is formed on a surface of the stator core. ... Minebea Mitsumi Inc

05/31/18 / #20180149805

Planar lighting device

A planar lighting device comprising: a board that includes a strip-shaped section, and an external connection section, which protrudes from the central part of the strip-shaped section in a lateral direction of the strip-shaped section, and that is provided with an installation surface; and light source units that are provided with a plurality of light sources connected in series, that are each provided with a first electrode and a second electrode on both end sides, and that are arranged side by side on the installation surface at the strip-shaped section of the board in a longitudinal direction. Furthermore, the single external connection section is provided for the light source units, and the first electrodes in all the light source units, related to the single external connection section, are located farther from the external connection section than the second electrodes in the light source units.. ... Minebea Mitsumi Inc

05/17/18 / #20180139568

Communication terminal and communication system

A communication terminal according to an embodiment includes a communication unit configured to transmit first information to a relay apparatus that receives information transmitted from a plurality of communication terminals and transmits the received information to a server, and includes a determination unit configured to determine a transmission timing of second information transmitted by the communication unit after transmission of the first information on the basis of a communication state of the relay apparatus at the time of transmission of the first information.. . ... Minebea Mitsumi Inc

05/17/18 / #20180138847

Motor drive control device and motor drive control method

According to an aspect of the present disclosure, a motor drive control device driving a motor using position information detected by one sensor includes: a current detection unit detecting a magnitude of a coil current flowing through a coil of the motor; a rotation position detection unit detecting a rotation position of the motor based on the position information; and a hunting determination unit determining, based on the magnitude of the coil current, the rotation position of the motor, and a driving command for driving the motor, whether or not the motor is in a hunting condition.. . ... Minebea Mitsumi Inc

05/03/18 / #20180123417

Spindle motor

A spindle motor includes a base plate to which a shaft is fixed, an annular stator core that is fixed to the base plate and is wound with a plurality of stator coils, and a rotor member that is attached in a rotatable state to the shaft and includes an inner sleeve portion facing an inner peripheral side of the stator core with an inner clearance and an outer sleeve portion facing an outer peripheral side of the stator core with an outer clearance, an annular groove is formed on an outer periphery of the inner sleeve portion, and the annular groove overlaps with the plurality of stator coils as viewed from a direction perpendicular to the shaft.. . ... Minebea Mitsumi Inc

05/03/18 / #20180123413

Spindle motor, hard disk drive device, and method of manufacturing spindle motor

A spindle motor according to an embodiment includes a base plate, a rotor magnet fixed to a rotor assembly positioned at one surface side of the base plate and a magnetic attraction plate fixed at the one surface side of the base plate so as to face the rotor magnet. An opposite area of the base plate facing the magnetic attraction plate includes a coated area covered by an epoxy electric discharge coating film, and the magnetic attraction plate is fixed to the opposite area via at least one of an epoxy adhesive and an acrylic adhesive.. ... Minebea Mitsumi Inc

04/12/18 / #20180098900

Load detector and load detection system

The load detector includes: first and second beam type load cells which are supported on first and second support bases in a cantilever manner to have free ends; and a mounting part on which an object is to be placed, which includes first and second connection parts connected to the first and second beam type load cells, and which is disposed between the first and second beam type load cells. The free ends of the first and second beam type load cells face opposite directions to each other in an extending direction of the first beam type load cell. ... Minebea Mitsumi Inc

04/05/18 / #20180097421

Stator structure and resolver

A stator structure according to an embodiment includes a stator core having a plurality of teeth; insulators configured to cover the teeth; a coil wound around each of the teeth with the insulators interposed therebetween; and first and second coil covers configured to cover the coil, each of the first and second coil covers being formed in an annular shape. The insulators have respective flange parts configured to cover respective distal end portions of the teeth. ... Minebea Mitsumi Inc

04/05/18 / #20180094634

Fan apparatus

There is provided a fan apparatus having a high-strength structure for supporting an impeller and a motor with good air quantity characteristics. The fan apparatus has a motor, an impeller, a motor base portion, a frame and a plurality of spoke portions. ... Minebea Mitsumi Inc

03/29/18 / #20180091025

Dc motor

A dc motor includes: a brush configured to be connectable with the commutator; a first terminal attached to the brush; a second terminal disposed at a position away from the first terminal, the second terminal being configured to be connectable with an external terminal; a bracket to which the first terminal and the second terminal are attached; and a positive temperature coefficient (ptc) thermistor disposed between the first terminal and the second terminal, the ptc thermistor including a first electrode bonded to the first terminal and a second electrode bonded to the second terminal, wherein the ptc thermistor is a surface-mount type thermistor in which the first electrode and the second electrode are exposed on one surface side and wherein, on the one surface side of the ptc thermistor, the first electrode faces the first terminal and the second electrode faces the second terminal.. . ... Minebea Mitsumi Inc

03/08/18 / #20180069458

Motor

A motor includes a commutator, a bracket including a conductive brush, first and second wall parts, and first and second deformable parts. The conductive brush is in contact with the commutator. ... Minebea Mitsumi Inc

03/08/18 / #20180069448

Motor, rotary apparatus including motor, and vehicle including air conditioning system including rotary apparatus

A motor includes an armature including a commutator, a bracket including a conductive brush and a first wall part, and a first deformable part. The conductive brush is in contact with the commutator. ... Minebea Mitsumi Inc

03/08/18 / #20180067252

Planar illumination device

A planar illumination device according to an embodiment includes: a light guide plate that guides an incident light from a side surface; a light source that is disposed in the side surface side and emits light incident to the side surface; a frame that has a floor surface extending along a main surface of the light guide plate and accommodates the light guide plate and the light source; a reflection sheet that is disposed in the main surface side of the light guide plate and reflects light; and a first fixing member that is disposed between the reflection sheet and the floor surface and fixes at least a part of an end portion of the reflection sheet in the light source side to the floor surface.. . ... Minebea Mitsumi Inc

03/01/18 / #20180062478

Motor

A motor according to the present disclosure is a motor including a motor body part and a driving circuit part, the motor body part including: a rotor; a stator including a wound coil; a winding terminal electrically connected to the coil and extending toward the driving circuit part; and a frame housing the rotor and the stator, wherein the driving circuit part includes: a case including a first attaching portion and a frame portion with openings on both end sides of the frame portion; a first wiring board including a driving circuit and a power device mounted on the first wiring board, the first wiring board being fixed to the first attaching portion; and a first electric wiring member including a first stress absorbing portion formed into a shape absorbing stress, the first electric wiring member electrically connecting the winding terminal and the first wiring board.. . ... Minebea Mitsumi Inc

03/01/18 / #20180059313

Planar illumination apparatus and substrate

A planar illumination apparatus according to an embodiment includes a light guide plate that outputs light entered into the light guide plate through a side face of the light guide plate, a plurality of light sources that are arranged on the side face side, and emit light to be entered into the side face, a substrate having a mounting surface where the light sources are mounted, and first wiring that is formed on an opposite surface opposite to the mounting surface of the substrate, and connects serially the light sources with each other.. . ... Minebea Mitsumi Inc

03/01/18 / #20180058479

Impeller for an axial flow fan and axial flow fan

An impeller for an axial flow fan includes a plurality of blades arranged around a rotating shaft and a hub portion having a side peripheral portion surrounding the rotating shaft as viewed from a direction parallel to the rotating shaft, wherein an end portion on the rotating shaft side of each of the plurality of blades is coupled to the side peripheral portion, the plurality of blades includes a blade having a first type of shape and a blade having a second type of shape, and a thickness of the end portion on the rotating shaft side in the rotating shaft direction of the first type of shape is greater than the thickness of the end portion on the rotating shaft side in the rotating shaft direction of the second type of shape.. . ... Minebea Mitsumi Inc

02/22/18 / #20180051750

Ball bearing unit for turbocharger

A ball bearing unit for a turbocharger according to an embodiment includes: an outer ring, a first inner ring, a second inner ring, a first machined retainer and a second machined retainer. The outer ring has an inner peripheral surface provided with an outer ring raceway surface at one end side and an outer ring raceway surface at another end side. ... Minebea Mitsumi Inc

02/15/18 / #20180046584

Address control circuit and control method for address control circuit

An address control circuit includes a setting terminal connectable to a ground potential, a time constant setting circuit connected to the setting terminal, and a control unit connected to the time constant setting circuit and configured to set an address for serial communication. The time constant setting circuit includes a resistive element disposed between the setting terminal and the control unit and configured to protect the control unit against overvoltage. ... Minebea Mitsumi Inc

02/15/18 / #20180045242

Rolling bearing and anti-rotation mechanism for turbocharger

A rolling bearing for a turbocharger according to an embodiment includes an outer ring, a first inner ring, a second inner ring, a plurality of rolling elements, a first retainer and a second retainer. The outer ring has a cylindrical shape and has two outer ring raceway surfaces. ... Minebea Mitsumi Inc

02/01/18 / #20180034345

Rotary apparatus

A rotary apparatus includes a motor including a rotary shaft, a plurality of gears including an output gear, and a housing accommodating the motor and the plurality of gears. The housing is separable into a first housing and a second housing. ... Minebea Mitsumi Inc

01/25/18 / #20180026558

Motor control circuit, motor drive control apparatus and control method of motor drive control apparatus

. . A motor control circuit comprising a speed control circuit configured to output speed command information relating to the rotational speed of a motor based on target information relating to a target rotational speed and rotational speed detection information of the rotational speed of the motor, a drive stop control circuit configured to output a first drive stop control signal for performing braking control of the motor or a second drive stop control signal for performing free-run stop control of the motor based on the rotational speed detection information and the speed command information when input of the target information is stopped, and a drive signal generation circuit configured to generate a drive control signal for driving the motor based on the first drive stop control signal or the second drive stop control signal when the first drive stop control signal or the second drive stop control signal is output.. . ... Minebea Mitsumi Inc

01/18/18 / #20180017728

Planar illumination apparatus

A planar illumination apparatus includes: a plurality of light sources that are disposed linearly and that emit light; and a light guide plate that has a lateral surface on which the light sources are disposed so as to face the lateral surface and includes extended portions each extending in directions in which the extended portions are spaced away from each other from both ends of the lateral surface and are away from the light sources. The light guide plate has a light emitting region that is either in contact with a boundary or disposed on a side opposite to one of the extended portions with respect to the boundary, in which the boundary is established between an emission range of an end portion light source on a side adjacent to the extended portion and a region different from the emission range.. ... Minebea Mitsumi Inc

01/04/18 / #20180003879

Planar illumination apparatus

A planar illumination apparatus according to an embodiment includes: a light-guiding plate that emits light made incident from a side face; a plurality of light sources that are arranged on the side face side and have respective light-emitting faces that emit light to be made incident on the side face; a substrate having a mounting face on which the light sources are mounted, the mounting face facing a face of the light sources opposite the light-emitting faces; and wiring that is formed on a face of the substrate opposite the mounting face and are connected to the light sources. The wiring includes wiring extending from both ends of the light sources connected in series.. ... Minebea Mitsumi Inc

01/04/18 / #20180003369

Fixing structure for electrical device, illumination device provided with said fixing structure, and method for fixing and removing electrical device

A fixing structure for an electrical device of the present invention includes: a first operating unit that has a power receiving unit, which receives power feeding from a power feeding unit of a wiring duct, and that engages and disengages the power receiving unit with and from the power feeding unit; a second operating unit that has a second engagement portion, which is supported by a support unit of the wiring duct, and that engages and disengages the second engagement portion with and from the support unit; and a first lock portion that is provided in the first operating unit and locks the second operating unit.. . ... Minebea Mitsumi Inc

01/04/18 / #20180003233

Grease composition-filled ball bearing, pivot assembly bearing including the ball bearing, and hard disk drive including the pivot assembly bearing

A ball bearing according to the present invention is filled with a grease composition. The grease composition contains a synthetic oil other than a synthetic hydrocarbon oil, a synthetic hydrocarbon oil, a mineral oil, and a urea compound. ... Minebea Mitsumi Inc

01/04/18 / #20180003188

Centrifugal fan

There is provided a centrifugal fan that effectively cools an electronic component with a simple structure. The centrifugal fan comprises an impeller 8 having a plurality of pins extending in an axial direction, a rotor yoke 18 formed with a plurality of through-holes through which the pins penetrate, the rotor yoke 18 being joined to the impeller 8 as the pins penetrate through the through-holes, and a circuit board 10 arranged in a state having a gap with respect to the rotor yoke 18, wherein an end 11c′ of the pin protrudes from the rotor yoke to a side of the circuit board, and the plurality of pins are arranged with uneven pitch in a circumferential direction of the impeller.. ... Minebea Mitsumi Inc

01/04/18 / #20180003168

Rotor and pump device

A rotor includes a rotary body configured to rotate about a rotational shaft; a plurality of bottom parts attached to the rotary body; a plurality of arm parts that have respective rollers configured to revolve around the rotational shaft and depress a tube, and are attached to the respective bottom parts; and an adjuster that adjusts the mutual positional relation between the bottom parts in the radial direction of the rotation of the rotary body.. . ... Minebea Mitsumi Inc

12/28/17 / #20170373622

Motor control device and motor controlling method

This motor control device has an inexpensive configuration and enhances motor current target value tracking. This motor control device has an h bridge circuit that has a switching element and is connected to a motor coil provided in a motor, and a control means that drives the switching element at each prescribed pwm period and specifies an operation mode for the h bridge circuit from among a charge mode for increasing the motor current (icoil) flowing through the motor coil, a fast decay mode for decreasing the motor current, and a slow decay mode. ... Minebea Mitsumi Inc

12/28/17 / #20170373568

Drive mechanism including brushed motor

A drive mechanism including a brushed motor comprises a brushed motor including a commutator having a plurality of commutator segments and a brush contactable to the plurality of commutator segments, a movable member driven by the brushed motor, and a stopper member configured to stop rotation of the brushed motor by contacting the movable member. In a state in which the movable member contacts the stopper member to thereby stop the rotation of the brushed motor, the brush contacts only one of two adjacent commutator segments of the plurality of commutator segments.. ... Minebea Mitsumi Inc

12/28/17 / #20170371095

Planar illumination apparatus

A planar illumination apparatus according to an embodiment includes a light guide plate that emits light from an emission surface, the light being incident on a lateral surface of the light guide plate; a light source that is arranged on the lateral surface side and has a light emitting surface that emits light to be incident on the lateral surface; a substrate that has two principal surfaces, a surface opposite to the light emitting surface of the light source being mounted on one of the principal surfaces; a frame that has a lateral surface and a floor surface, and accommodates the light guide plate, the light source, and the substrate; and a first coupling member that is arranged between the light guide plate and the floor surface and between the light source and the floor surface, and couples the light guide plate and the light source.. . ... Minebea Mitsumi Inc

12/21/17 / #20170366067

Rotary apparatus and vehicle having air conditioning system including the rotating apparatus

A rotary apparatus includes a motor, a plurality of gears, and a sensor configured to detect a rotation angle of one of the plurality of gears. The sensor includes a first connection terminal electrically connecting to the outside, and a base portion. ... Minebea Mitsumi Inc

12/21/17 / #20170361681

Rotary apparatus

A rotary apparatus includes a motor, a plurality of gears including an output gear, and a housing accommodating the plurality of gears and the motor. The housing includes a first surface portion, a second surface portion facing the first surface portion and spaced apart from the first surface portion, and a sidewall portion provided at an outer peripheral portion of the first surface portion and the second surface portion and supporting the first surface portion and the second surface portion. ... Minebea Mitsumi Inc

12/14/17 / #20170359068

Plain-face switch and method for attaching the plain-face switch

A plain-face switch according to an embodiment is the mounted-type plain-face switch that is mounted into an opening, it includes a base unit that is provided at the back of the opening, a sensor module that has a flat sensor surface facing the side of the opening and that is supported by the base unit, and a securing unit that secures the base unit to the bottom surface, which is located at the back of the opening, and the securing unit is capable of adjusting the position or the tilt of the sensor module in the depth direction with respect to the opening such that the edge surface of the sensor module at the side of the opening enters a predetermined state with respect to the opening.. . ... Minebea Mitsumi Inc

12/14/17 / #20170355054

Coolant application device

The present invention provides a technique in which service life of a coolant application device can be extended. The coolant application device includes a nozzle body which spouts coolant, a hollow shaft which rotates the nozzle body, a motor which controls a rotation angle of the hollow shaft, and an oldham coupling portion which connects the hollow shaft and an output shaft of the motor, the oldham coupling portion transmits driving force of the motor to the hollow shaft, allowing a misalignment between an axis of the hollow shaft and an axis of the output shaft.. ... Minebea Mitsumi Inc

12/07/17 / #20170350409

Impeller and fan including the impeller

An impeller of this disclosure includes a hub having a ring shape; and a plurality of blades that are provided on an outer periphery of the hub, wherein the blade has a trailing edge formed such that an inner side of a radial width of the blade is curved in a direction opposite to a rotation direction, in a plan view as viewed in a direction of a rotation axis.. . ... Minebea Mitsumi Inc

12/07/17 / #20170349851

Ultraviolet curable resin composition and sliding member

There is provided an ultraviolet curable resin composition for a self-lubricating liner, including: a (meth)acrylate compound having an isocyanuric acid ring; at least one of (meth)acrylate having a phosphoric acid ester group and (meth)acrylate having a silane group: a polythiol compound; and a polytetrafluoroethylene resin as a solid lubricant.. . ... Minebea Mitsumi Inc

11/30/17 / #20170343721

Planar illumination apparatus

A planar illumination apparatus according to an embodiment includes a light guide plate configured to emit, from an exit surface, light incident from a side surface, a frame including a border that encloses the light guide plate, and a plate spring provided between the light guide plate and the border and configured to press the light guide plate in a first direction and in a second direction different from the first direction.. . ... Minebea Mitsumi Inc

11/30/17 / #20170343432

Load detection apparatus

A load detection apparatus includes a load input portion having a input surface, and an output surface; a flexure element including on annular portion including a contacting portion configured to make contact with at least a part of the output surface, and a support portion; a set of sensors disposed on a reverse surface opposite to a surface provided with the contacting portion in the annular portion, each of the set of sensors being configured to detect distortion corresponding to an input load; a set of calculation portions configured to calculate a set of magnitudes of the load by use of respective detection results obtained by the set of sensors; and an abnormality determination portion configured to determine whether the set of sensors and the set of calculation portions have no abnormality, by comparing the set of magnitudes of the load with each other.. . ... Minebea Mitsumi Inc

11/30/17 / #20170343045

Rolling bearing

A rolling bearing is filled with a grease composition that contains a fluorine-based grease including a fluorine-based base oil and a fluorine-based thickener, a non-fluorine-based grease including a non-fluorine-based base oil and a non-fluorine-based thickener, and an additive serving as a dispersant. The non-fluorine-based thickener includes at least one of aliphatic-aromatic urea, alicyclic-aliphatic urea and aliphatic urea. ... Minebea Mitsumi Inc

11/23/17 / #20170335895

Torque limiter and drive device

A torque limiter includes: a first rotary member configured to be rotated by a drive source; at least one first friction member engaged with the first rotary member; at least one second friction member arranged so as to overlap the first friction member, and configured to rotate with rotation of the first rotary member by using frictional force generated between the second friction member and the first friction member; and a second rotary member engaged with the second friction member. It is preferable that the first rotary member and the second rotary member be pivotally supported by an identical rotary shaft, and that, while either the first rotary member and the second rotary member is fixed to the rotary shaft, the other one be supported so as to be rotatable about the rotary shaft.. ... Minebea Mitsumi Inc

11/16/17 / #20170331413

Motor drive controller and motor drive control method

A motor drive controller including a monitoring unit monitoring whether or not a use state of a motor to be controlled satisfies a predetermined condition, and an output information switching unit switching information to be outputted to the outside from an information output path from motor driving information indicating a drive state of the motor to monitoring information indicating the use state if the use state satisfies the predetermined condition.. . ... Minebea Mitsumi Inc

11/16/17 / #20170331411

Motor drive controller and motor drive control method

A motor drive controller according to one aspect of the present disclosure including a monitoring unit monitoring a motor and detecting that the motor is in a driving state but is also in a predetermined abnormal state; and a incomplete lock determination unit executing a determination program at a point of time when the abnormal state is detected and causing the determination program to determine whether or not the motor is in an incomplete locked state in which a load not sufficient to stop the motor is applied to a rotating body rotated by driving of the motor.. . ... Minebea Mitsumi Inc

11/09/17 / #20170324280

Wireless power supply device, wireless power receiving device and wireless power transmission system

A wireless power supply device includes: a power supply coil for wirelessly transmitting electric power to a power receiving device; a driving circuit for outputting pulse electric power to the power supply coil; a first radio module for receiving rectified voltage information regarding rectified voltage generated in the power receiving device via a radio communication path; and a control circuit for generating a driving control signal on the basis of the rectified voltage information received by the first radio module, thereby to control the driving circuit, said control circuit controlling a driving frequency of the driving circuit at a fixed frequency between a series resonant frequency and a parallel resonant frequency of a resonant circuit of the power receiving device.. . ... Minebea Mitsumi Inc

10/26/17 / #20170307196

Driving device and lighting apparatus

A driving device according to an embodiment includes a supporting portion, an arm portion and a reinforced portion. The supporting portion includes an electrically-driven first drive source. ... Minebea Mitsumi Inc

10/26/17 / #20170307195

Drive apparatus and illumination apparatus

A drive apparatus according to an embodiment includes a support unit, an arm, an operation target and a bias part. The support unit includes an electrically-driven first driving source. ... Minebea Mitsumi Inc

10/26/17 / #20170307194

Electronic device and lighting apparatus

An electronic device according to an embodiment includes an electronic component and equipment. The equipment includes a mounting surface on which the electronic component is mounted via a coating agent and on which a recessed portion is provided along a part of a circumferential end portion of the electronic component.. ... Minebea Mitsumi Inc

10/26/17 / #20170307193

Driving device and lighting device

A driving device of an embodiment includes a first rotational unit and a holding unit. The first rotational unit is disposed with an object to be operated on one surface side intersecting with a first rotating shaft, and rotationally moves around the first rotating shaft with the object to be operated. ... Minebea Mitsumi Inc

10/12/17 / #20170293071

Planar lighting device

A planar lighting device according to an embodiment includes: a light guide that has flexibility and receives light from a side surface and emits the light from a light-emitting surface; a light source disposed close to the side surface and emits light that enters the side surface; a first frame having a curved shape and having an aperture; a second frame having a curved surface for sandwiching the light guide between the first frame and the curved surface such that the light-emitting surface faces the aperture; and an optical sheet disposed close to the light-emitting surface with at least a part of an edge portion of the optical sheet being disposed in a space defined by the first frame and the light guide, the part being separated from the first frame.. . ... Minebea Mitsumi Inc

10/12/17 / #20170292687

Angle adjustment device and lighting device

An angle adjustment device of an embodiment includes a first rotational unit and a spring member. The first rotational unit is supported by a frame body, and rotationally moves around a first rotating shaft that passes through the frame body and that is disposed along an opening surface of the frame body, by a driving force of a driving source with an object to be operated. ... Minebea Mitsumi Inc

10/05/17 / #20170288518

Stator structure and resolver

A stator structure includes a stator section, coil cover, terminal block section, plurality of terminals and terminal-block cover section. Stator section includes stator core including first main body section and plurality of teeth sections extending on inner circumference side of first main body section and coils configured by winding wires wound around teeth sections via an insulator. ... Minebea Mitsumi Inc

10/05/17 / #20170288494

Spindle motor

A spindle motor has a base plate, a stator core fixed to the base plate, a rotor member rotatable with respect to the base plate, a rotor magnet facing the stator core in a radial direction and fixed to the rotor member and a ring-shaped magnetic attractive plate attached to the base plate bottom surface facing the rotor magnet in an axial direction to generate a magnetic attracting force between the rotor magnet and the magnetic attractive plate. A ring-shaped wall surface is on the base plate bottom surface. ... Minebea Mitsumi Inc

10/05/17 / #20170288462

Wireless power supply device, wireless power receiving device and wireless power transmission system

A wireless power supply device including a power supply coil for wirelessly transmitting electric power to a power receiving device, a driving circuit for outputting pulse electric power for driving the power supply coil at the resonance frequency of the power receiving device to the power supply coil, a first radio module for receiving rectified voltage information about rectified voltage generated in the power receiving device via a radio communication path, and a control circuit for generating a driving control signal on the basis of the rectified voltage information received by the first radio module, thereby to control the driving circuit.. . ... Minebea Mitsumi Inc

10/05/17 / #20170285244

Planar illumination device

A planar illumination device includes a light guide plate guiding a light entering from a light-entering end surface and emitting the light from a light-emission surface, and a fixing member disposed in a manner covering at least an area in the light-entering end surface side of the light-emission surface. The light guide plate has a plurality of first prisms formed on the light-emission surface in the area covered by the fixing member in the light-entering end surface side and a plurality of second prisms formed on the light-emission surface in an area covered by no fixing members. ... Minebea Mitsumi Inc

10/05/17 / #20170284833

Stator structure and resolver

A stator structure includes a stator core including a plurality of tooth sections, coils wound around the respective plurality of tooth sections via an insulator, and a first coil cover and a second coil cover that cover the coils from both sides in an axial direction of the stator core. The first coil cover and the second coil cover being coupled via the insulator.. ... Minebea Mitsumi Inc

10/05/17 / #20170284652

Heat radiation member and lighting device

A heat radiation member according to an embodiment includes a plurality of heat radiation fins each formed in a plate shape and a plurality of ribs. The plurality of heat radiation fins is disposed upright from a base on which a light source is to be fitted, and is arranged in a predetermined direction. ... Minebea Mitsumi Inc

10/05/17 / #20170284420

Centrifugal fan

A centrifugal fan comprises a rotor that has a rotor yoke, an impeller that has a blade and is coupled to the outer periphery of the rotor yoke, a motor that rotates the rotor and a casing that has a suction opening and a discharge opening, and houses the rotor, the impeller, and the motor. The impeller rotating together with the rotor discharges air sucked in through the suction opening to the outside of the casing through the discharge opening. ... Minebea Mitsumi Inc

09/28/17 / #20170279387

Motor driving controller

A motor driving controller comprising a motor driver applying voltage to each phase of a motor and driving the motor, a rotary position detection circuit detecting a rotary position of a rotor and generating rotary position information, and a control part outputting, to the motor driver, a driving control signal to execute control based on the detected rotary position information, so that an overlap energization operation at a time of energization switching is repeated in a predetermined pattern.. . ... Minebea Mitsumi Inc

09/14/17 / #20170264223

Motor drive controlling apparatus, motor drive controlling method, and tube pump

A motor drive controlling apparatus includes a controller that generates a drive control signal in response to input of a speed command signal and a motor driver that generates a drive signal in response to input of the drive control signal and outputs the drive signal to a motor, and the controller repeatedly generates the drive control signal in a period during which the speed command signal is inputted and stops generating the drive control signal in a period during which the speed command signal is not inputted to repeat an operation period in which the motor performs rotational operation and a stop period in which the motor stops operating in a non-excited state.. . ... Minebea Mitsumi Inc

09/14/17 / #20170261080

Drive apparatus

A drive apparatus according to an embodiment includes a first rotation unit, a base, a lead screw unit, and a second rotation unit. The first rotation unit includes a gear rotatable in first directions by a drive power source. ... Minebea Mitsumi Inc

08/10/17 / #20170227413

Pressure sensor and apparatus

A pressure sensor includes a sensor member including a sensor face to which pressure is imparted and a cover member that covers at least part of the peripheral face of the sensor member while exposing the sensor face out of one end side. With such a configuration, the sensor member can be protected from a lateral force (side pressure), whereby the sensor member can be prevented from being broken by the application of the side pressure to the sensor member.. ... Minebea Mitsumi Inc

08/10/17 / #20170227201

Angle adjuster and lighting apparatus with angle adjuster

An angle adjuster is configured by disposing a first driver for driving a horizontal rotation frame (horizontal direction rotator) to rotate in the horizontal direction and a second driver for driving a vertical rotation frame (vertical direction rotator) to rotate in the vertical direction on the horizontal rotation frame. This configuration can reduce the size of the angle adjuster and a lighting apparatus with the angle adjuster.. ... Minebea Mitsumi Inc








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