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7622838 |
Axial fan motor
An axial fan motor comprising: a fan having a rotating shaft and composed of a hub and a plurality of vanes provided around the hub, the fan rotating to generate an air flow; a stator substrate set...
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7622837 |
Hydrodynamic bearing device and spindle motor having the bearing device, and recording and/or reproducing apparatus using the spindle motor
A set of radial dynamic pressure generating grooves constitute a radial bearing, and an entire width (L) of the radial dynamic pressure generating groove is reduced. A set of thrust dynamic...
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7621357 |
In-wheel motor system and method of installing the same
A direct drive motor module has hollow disk-like plates ( 21, 22 ) for interconnecting the rotation side of an in-wheel motor ( 3 ) and a wheel ( 2 ) and a drive force transmission mechanism ( 20 )...
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7619337 |
Brushless motor, brushless type fan motor and electric device comprising a brushless type fan motor
In a fan motor, there are provided protruding portions provided integrally with a base member so as to face a magnet and protrude toward the magnet, and openings facing the magnet, in the base...
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7612475 |
Ceiling fan motor
A ceiling fan motor includes a housing having top and bottom casing parts, a stator disposed in the housing and having a stator axis, and a rotor unit including a mounting seat that has an inner...
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7608960 |
Mounting structure for a stator of a motor- stator
A mounting structure for a motor includes a central tube ( 16 ), a supporting plate ( 13 ) and a motor-stator ( 30 ). The central tube includes two positioning blocks ( 162 ). The supporting plate...
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7608958 |
Motor mounted with improved dynamic pressure fluid bearing mechanism
A motor is composed of a rotor and a stator. The rotor includes a shaft, a hub having a cylindrical wall and a thrust ring. The stator includes a motor base, an inner seal and a sleeve having a...
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7605508 |
Electrical machine with support of the rotor on an end face of the stator
An electrical machine has a stator, a rotor, which features a rotor shaft, and at least one bearing for the rotor. The bearing is supported on a bearing block, which in its turn rests on an end...
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7603877 |
Detecting device of unbalance conditions particularly for washing machines and similar household appliances, activated by a synchronous electric motor
A detecting device of unbalance conditions, particularly for washing machines ( 1 ) and similar household appliances comprising a rotary drum ( 2 a ) supported by a tank ( 2 ) and activated by a...
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7598647 |
Inductor-type synchronous machine
An inductor-type synchronous machine includes field stators having field elements by which an N-pole and an S-pole are concentrically formed, rotors to which a rotating shaft is fixed and has...
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7598643 |
Motor with electrodynamically and hydrodynamically supported rotor
An apparatus includes a rotor, a stator, and a plurality of magnets forming bearing poles coupled to a selected one of the stator or the rotor. The apparatus further includes a plurality of shorted...
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7589444 |
Brushless motor and cooling fan
A rotor unit of a brushless motor includes a substantially cylindrical rotor magnet and a rotor holder arranged to retain an outer circumferential portion of the rotor magnet. A stator unit of the...
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7586660 |
DC brushless motor, light deflector optical scanning device, having an increased efficiency to reduce power consumption and heat generation using exactly six poles and stator with nine teeth and corresponding coils
A light deflector is disclosed that includes a bearing, a motor, a rotary body supported by the bearing and rotated by the motor, and a polygon mirror fixed to the rotary body. The motor includes...
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7586228 |
Stator of an electric motor
The invention relates to a stator of an electric motor, comprising a laminated stator core ( 1 ) which is provided with electrical insulation ( 8 ) composed of plastic, and a stator bushing ( 3 )...
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7586223 |
Ultra-thin spindle motor having groove formed on the outer circumferential surface of thrust bearing
An ultra-thin spindle motor having a groove formed on the outer circumferential surface of a thrust bearing is disclosed. The present invention relates to an ultra-thin spindle motor among...
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7583001 |
Electric motor design for in hub motors
An electric motor design for hub motors comprises a stator assembly, having an axle, a stator plate sector holder, fixed on the axle, at least one stator sector assembly, mounted on the stator...
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7582996 |
Dynamic pressure bearing motor
A magnet ( 13 ) for trapping abraded powder is disposed in a connecting passage between an opening of a sleeve and an opening of a hydrodynamic bearing motor, and a shaft ( 3 ), a sleeve ( 4 ), a...
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7579731 |
Miniature brushless motor structure
Disclosed herein is a reliable inner rotor type miniature brushless motor structure wherein, while a field coil is fixedly disposed onto the inner wall of a housing, an end flange is fixedly...
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7579726 |
Fan, motor and stator structure thereof
A stator structure of a motor includes a first magnetic substrate, a second magnetic substrate and a plurality of coil units. An outer profile of the first magnetic substrate has a plurality of...
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7569967 |
Compact disk device and disk drive
A disk device has a small size, a small thickness, a high efficiency, a small degree of vibration and a small level of noise. In one embodiment, the disk device comprises a disk for storing...
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7567003 |
Cooling fan
A cooling fan includes a fan housing ( 30 ) having a central tube ( 34 ) extending upwardly thereof, a bearing ( 60 ) received in the central tube, a stator ( 20 ) mounted around the central tube,...
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7567000 |
Motor
A motor includes a heat dissipating structure. The motor may be used for a fan and includes on an upper surface of a circuit board a heat dissipating layer. The heat dissipating layer has a high...
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7557479 |
Electric fan with bearing
An electric fan includes a fan base ( 10 ), a bearing ( 40 ) and a rotor assembly ( 20 ). The fan base forms a center tube ( 11 ) receiving the bearing therein. The center tube has a wall and a...
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7557476 |
Hollow core electric motor
The disclosed system, device and method for an electric motor generally includes a hollow shaft having a first end and a second end. An electromagnet is coupled to the hollow shaft, where the...
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7554229 |
Stator structure of motor
A stator structure of a motor. The stator structure has a base including a main body and a plurality of protrusions extending from the main body. A stator part has a plurality of magnetic-pole...
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7554228 |
Cooling fan with an outer rotor motor
A cooling fan with an outer rotor motor supported by a fan housing. A motor housing is disposed within a conduit through the fan housing, while the outer rotor motor is disposed within the motor...
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7554227 |
Heat-dissipating device for motor base
A motor includes a base having a fixing seat, an axial tube mounted to the fixing seat, a rotor mounted to the axial tube, and a circuit board mounted to the base and including a stator and at...
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7550890 |
Motor assembly with an integrated flexible printed circuit
The present invention provides a motor assembly for mounting to a base. The motor assembly includes a stator assembly having a plurality of stator teeth. Each stator tooth is configured to support...
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7550884 |
Brushless motor
A cutout portion is formed at an outer peripheral side of a stator placing portion provided in a bearing bush for placing a core back portion of a stator. A connecting wire portion of a coil of the...
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7550883 |
Rotor hub, spindle motor, and recording disk driving apparatus
A spindle motor according to an embodiment of the invention includes a rotor hub formed of a ferromagnetic material and a rotor magnet held by the rotor hub. The rotor hub has a flange having a...
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7541713 |
Heat sink
A heat dissipating fan comprises a base unit having an axial sleeve, a dynamic bearing having a shaft section, a stator unit securely around the axial sleeve and a rotor unit. The rotor unit has a...
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7541702 |
Brushless fan motor
A brushless fan motor, in which cooling effect on a stator may be enhanced, is provided. A center through hole is formed in a center of a bottom wall portion of a first brushless fan motor. Vane...
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7538466 |
Dual fan and dual motor structure thereof
A dual motor structure of a dual fan includes a first stator structure, a first rotor structure, a first bearing, a second stator structure, a second rotor structure and a second bearing. The first...
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7538465 |
Fan assembly and its housing
A fan housing. The fan housing mounted on a frame of a system includes a main body, a first section, a second section and a fixing portion. Both the first and second sections are disposed on the...
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7538459 |
Disk drive device having a motor, and manufacturing method of the motor
An inner rotor type motor includes a turn table having a disk loading portion and a central opening portion arranged to allow a disk to be attached thereto and removed therefrom, a rotor concentric...
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7535134 |
Spindle motor, and recording and reproducing apparatus equipped with the same
With a spindle motor 20 , a stator core 8 comprises a plurality of salient pole components 51 that are formed in a radial shape, are wound with a stator coil 9 , and are disposed at a uniform...
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7531928 |
Spindle motor and rotation device having dynamic pressure bearing
A spindle motor includes a shaft including a core spindle member with a large and a small diameter portions and an encircling annulus member attached to the small diameter portion; a rotor hub...
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7529063 |
Bearing support for a spindle motor of a disk drive
Provided is a spindle motor for a disk drive including a base, a sleeve fixed on the base and having a space portion therein, and a shaft rotatably installed in the space portion of the sleeve and...
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7528518 |
In-wheel motor
A front wheel is rotatably fitted to a knuckle of a suspension by means of a hub unit. While a stator bracket, which is fitted to an outer hub of the hub unit fixed to the knuckle, supports an...
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7525227 |
Spindle motor and disk drive unit
A simple configuration allows a rotor of a spindle motor to be eccentric in the pickup moving direction, and improves axial run-out caused by clearance between a rotating shaft and bearing. An arc...
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7521831 |
Ultra-slim spindle motor
A spindle motor, which includes a bearing to rotatably support a rotating shaft, a bearing holder to securely hold the bearing therein, a base to securely support the bearing holder thereon, a...
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7520674 |
Magnetic disk device with rotor supported by fluid bearing
Embodiments of the invention make high-speed rotation of a magnetic disk, suppression of an increase in electric power consumption, and suppression in shaft falling vibration compatible together in...
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7518823 |
Spindle motor winding for miniature hard disk drive
A spindle motor for implementation in a low profile hard disk drive is described; that spindle motor having a novel configuration for the torque generating portion. The spindle motor includes a hub...
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7514831 |
Motor having fluid dynamic bearing and disk drive with the-like motor
Motor having a rotor magnet, a stator and a bearing mechanism with vibrations and noises suppressed. The greatest common divisor of the number of the magnetic poles of the rotor magnet and the...
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7511918 |
Spindle motor and recording disk driving apparatus having the spindle motor
Spindle motor capable of positively fixing and securing conduction between a housing and a bracket, and a recording disk driving apparatus using the spindle motor. The bracket has a circular...
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7511398 |
Motor and recording disk driving device
A base plate is provided with plural through holes extending vertically through the base plate, at the portions aligned with plural teeth. In the respective through holes of the base plate, the...
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7508102 |
Brushless motor having a circuit board having a central hole and escape holes
In a brushless motor of the present invention, by disposing an electronic circuit board and a rotary magnet close to each other, detection precision of a magnetic pole of a Hall IC is enhanced, and...
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7493989 |
Elevator suspension arrangement
The invention relates to a suspension arrangement for an elevator, which elevator preferably is an elevator without machine room and in which elevator the hoisting machine ( 4 ) is connected via a...
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7492070 |
Cooling fan
A cooling fan includes: a casing having a surrounding wall that defines an accommodating space; a circuit board disposed in the accommodating space and including a substrate and a control circuit,...
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7489059 |
Motor mounted with improved dynamic pressure fluid bearing mechanism
A motor is composed of a rotor and a stator. The rotor includes a shaft, a hub having a cylindrical wall and a thrust ring. The stator includes a motor base, an inner seal and a sleeve having a...
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