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JP6409321B2 |
A rotor portion includes an upper cylindrical portion and a lower cylindrical portion, each of which is configured to rotate together with a rotor. A stator portion includes a circuit board including a rotation detection portion located ...
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JP6406114B2 |
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JP6403982B2 |
A rotor includes: a rotor core; a plurality of magnets; and an adhesive that adhesively bonds the magnet to the rotor core. The magnets are housed in the magnet holders such that the same magnetic poles of adjacent magnets face each othe...
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JP6399090B2 |
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JP6385969B2 |
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JP6385854B2 |
To provide a resolver positioning structure for a brushless motor capable of performing accurate positioning between a resolver rotor and a motor rotor of a motor.A brushless motor 1 is an IPM motor with which a rotor magnet 18 is embedd...
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JP2018137955A |
To prevent breakage while maintaining detection precision of a resolver.A motor with a resolver comprises a resolver 3 which has a resolver rotor 20 fixed to a motor shaft and a resolver stator 21 provided at a periphery of the resolver ...
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JP6381821B2 |
An electric motor 100 is provided with a stator 42, rotor magnet, sensor magnet 11, substrate 46, and magnetic sensor 47. The circumferential-direction position of a first inter-magnetic pole section between a first magnetic pole and a s...
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JP6381745B1 |
To obtain a rotation angle detecting device for ensuring centrifugal force resistance while suppressing an increase in cost. A rotation angle detecting device having a sensor rotor and a sensor stator, the sensor rotor has irregularities...
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JP2018133954A |
To obtain a motor capable of suppressing reduction in detection accuracy of a detector.A motor comprises: a stator 12 that generates a magnetic field by being energized; a rotor 14 that receives the magnetic field generated by the stator...
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JP2018133847A |
To suppress reduction in detection accuracy of a magnetic flux by a detector.A rotor 10 that constitutes a part of a motor 12, comprises a rotation shaft 24, and a magnet constituent 26 fixed to the rotation shaft 24. The magnet constitu...
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JP6376987B2 |
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JP6373532B1 |
The rotary electric machine has a housing, a stator provided in the housing, a rotation shaft rotatably provided in the housing, a rotor provided in the rotation shaft, and a rotation angle that generates a signal according to the rotati...
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JP2018121518A |
To reduce an area to arrange three magnetic sensors in an on-vehicle electric motor.A control circuit 63 starts a rotor 50 by controlling an inverter circuit 62 on the basis of detection values of Hall sensors 61a. After start of the rot...
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JP2018117429A |
To provide a brushless motor capable of suppressing magnetic influence of a drive magnet to obtain a highly reliable position detection signal.A brushless motor includes a rotor in which a drive magnet 43 and a position detection magnet ...
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JP6354775B2 |
A drive unit, which can be included in an image forming apparatus with peripherals disposed thereto and use a control method therefore, includes an inner rotor brushless DC motor, a driver, a rotation detector, and a controller. The driv...
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JP2018093585A |
To provide a motor in which the rotation position of a rotor can be detected.The motor comprises a rotation shaft 2, a bearing 17 supporting the rotation shaft 2, a magnet 3, a rotor core 6, and a magnetic sensor 35. The magnet 3 has a p...
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JPWO2017033917A1 |
One aspect of the motor of the present invention is a motor body having a motor housing for accommodating a rotor and a stator, a cover arranged above the motor body, and a connector cover portion arranged between the motor body and the ...
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JP6333479B2 |
A permanent-magnet electric motor includes an annular stator core, a rotor core, and a rotating-position detection sensor. In each of a plurality of magnet insertion holes formed in the rotor core, a rare-earth magnet and a ferrite magne...
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JP2018078675A |
To suppress an influence of noise generated through a wiring pattern without increasing the number of electronic components.An open stub 55 is so formed on a printed board 51 that the open stub branches off halfway from a wiring pattern ...
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JP2018068062A |
To provide a brushless motor that is able to reduce noise.A brushless motor comprises: a magnet rotor 11; and a stator 20 comprising: a plurality of first teeth 24; second teeth 25 circumferentially provided between the first teeth 24; a...
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JP6310753B2 |
The housing member includes a front bell that supports a portion of the rotating shaft of the rotor and a housing body that supports another portion of the rotating shaft of the rotor. The front bell includes a mount fitted with the dete...
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JP6304175B2 |
A control circuit 63 controls, based on detection values of Hall-effect sensors 61a, 61b and 61c, an inverter circuit 62 to activate a rotor 50. After the activation of the rotor 50, the control circuit 63 controls the rotational speed o...
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JP2018509122A |
An axial brushless DC motor that includes a stator, a rotor containing magnets, and a sleeve bush that extends through the stator and contains a pair of opposing distal collars, with the motor shaft passing through the sleeve bush. A pai...
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JP6301765B2 |
To provide a Lundell type rotor (Lundell type motor) having a structure capable of suppressing overflowing of an extra portion of an adhesive to outside when fixing a sensor magnet by using the adhesive.When a sensor magnet 50 is to be f...
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JP6297222B2 |
A permanent-magnet electric motor includes: a rotor; and a rotational-position detection sensor configured to detect a rotational position of the rotor. The rotor includes: a rotating shaft; an annular ferrite magnet disposed on an outer...
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JP2018042350A |
To provide a brushless motor capable of detecting a rotational position of a rotor with high accuracy.A sensor magnet 40 is configured so that an opposed surface 41 to an MR sensor becomes a convex curved surface from both-side pole boun...
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JP6274415B2 |
An electric tool includes a brushless motor having a plurality of phases, the brushless motor. The brushless motor includes a plurality of stator coils connected in parallel with each of the plurality of phases, and a plurality of crosso...
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JP6275415B2 |
A rotor type brushless motor comprises a drive magnet having an indexing pole part that extends on one axial side thereof. This indexing pole part is formed at least in the range from the circumferential center of one north pole to the c...
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JP6270510B2 |
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JP6263733B2 |
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JP6265824B2 |
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JP6267907B2 |
A bus bar unit is configured to supply power to coils (16) of a plurality of phases, and includes phase bus bars (47U), (47V), and (47W) which are provided for each phase and are connected to winding start ends of the coils, and a neutra...
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JP6261776B2 |
This invention is concerning connecting members which connect a motor and inverters and which are arranged symmetrically such that magnetic fields produced by three-phase alternating current flowing in the connecting members cancel each ...
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JP6257212B2 |
A brushless motor (1) includes a stator (2) including a stator core (5) formed by laminating a plurality of stator core plates (17), and a rotor (3) including a rotor core (15) formed by laminating a plurality of rotor core plates (18). ...
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JP6258990B2 |
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JP2017229210A |
To provide a motor capable of enhancing relative position accuracy in a radial direction between a magneto-sensitive portion of a magnetic sensor arranged oppositely an outer peripheral surface of a rotor driving magnet through a diaphra...
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JP2017225319A |
To provide a motor that is able to reduce force acting on a rotor including a rotary shaft, while restricting a decrease in output of the rotary shaft.A motor has: a rotor 3; bearings 41, 42 supporting the rotor 3 such that the rotor is ...
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JP6248433B2 |
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JP6246325B2 |
An electric motor includes a cylindrical holder mounted to an end of a rotation shaft, a sensor magnet mounted to the holder, and a rotation sensor mounted at a position at which the rotation sensor opposes the sensor magnet in a directi...
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JP2017215316A |
To provide a new magnetic sensor integrated circuit so as to expand functions of a conventional magnetic sensor.A magnetic sensor integrated circuit and a motor component are provided. The magnetic sensor integrated circuit includes a ho...
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JP2017216676A |
To provide an improved magnetic sensor integrated circuit, motor assembly and application device.The magnetic sensor integrated circuit includes a magnetic field detection circuit. The magnetic field detection circuit includes a magnetic...
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JP6244466B2 |
Provided are an electric motor that enables to promote a further downsizing and performance enhancement, and a dental device that includes the electric motor. A brushless slotless electric motor 10 includes: a stator 3 that includes a st...
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JP2017212853A |
To reduce vibration and noise in a brushless motor.A motor comprises: a motor case 2 whose one end in an axial direction is opened, and that has a notch part at an edge portion on the opened side, and in which a rotor is held freely rota...
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JP2017208879A |
To provide a brushless motor which enables an axial length to be shortened.A bearing housing part 13a which houses and holds a bearing 22 is configured to reach a recessed part 30, and parts of the bearing housing part 13a and the bearin...
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JP6228669B2 |
The present invention discloses a motor comprising a stator, a rotator rotatably connected with the stator and an electrical connector that provides an electric signal to the motor. The motor further comprises a magnet fixed on the rotat...
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JP6220360B2 |
To provide a brushless motor in which a thrust force is acted on a rotor, easy to manufacture, with a simple structure.The brushless motor includes: a stator 200 having a stator core 102 and a stator coil 104; a rotor magnet 114 rotatabl...
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JP2017192298A |
To provide a BLDC motor with improved position sensing resolution.A BLDC motor 10 has a control system 30, a rotor 14 including a motor magnet 20 having a plurality of alternating magnetic poles on a surface thereof, a stator 12, and a r...
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JP6215913B2 |
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JP6208031B2 |
Provided are a brushless motor having improved reliability and manufacturability, and a method for manufacturing the brushless motor. A stator comprises a stator core (35), an insulator (36) attached to the stator core (35), a wire (37),...
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