公开(公告)号：US12176790B2

公开(公告)日：2024-12-24

申请号：US18334359

申请日：2023-06-13

Applicant: MITSUBA Corporation

Inventor： Teppei Tokizaki ,  Motoaki Kobayashi ,  Satoshi Tamura ,  Masaki Hayata ,  Masakazu Saito ,  Yoshichika Kawashima

IPC: H02K7/116 ,  F16H1/08 ,  B60S1/08 ,  B60S1/26 ,  F16H57/02

Abstract: A brushless motor includes a motor part and a gear part. The motor part includes: a rotating shaft, having a first gear; a rotor, having a bottom wall and a side wall, the bottom wall being fixed to the rotating shaft; magnets, fixed to the side wall and arranged side by side in a circumferential direction of the rotor; a stator, provided between the rotating shaft and the magnets in a radial direction of the rotor and wound with a coil; and a motor housing, rotatably supporting the rotating shaft, and accommodating the rotor and the stator. The gear part includes: a second gear, meshed with the first gear; an output shaft, having an output part, having a base end side thereof fixed to the second gear, and parallel to the rotating shaft; and a gear housing, rotatably supporting the output shaft, and accommodating the second gear.

公开(公告)号：US12009767B2

公开(公告)日：2024-06-11

申请号：US17442576

申请日：2020-03-26

Applicant: MITSUBA Corporation

Inventor： Ryo Ohori ,  Naoki Shioda ,  Masaki Hayata ,  Takashi Yatsuda ,  Atsushi Kawasaki

IPC: H02P6/16 ,  B60J7/057 ,  B60S1/08

CPC classification number: H02P6/16 ,  B60J7/0573 ,  B60S1/08 ,  H02P2209/07 ,  H02P2209/11 ,  H02P2209/13

Abstract: A motor control device for controlling a brushless motor including a rotor and a three-phase armature coil includes: a position detection unit which detects the rotational position of the rotor; a control unit which outputs, in a first control mode or a second control mode, a first drive signal or a second drive signal to an inverter at a current-supply timing based on the rotational position of the rotor; and the inverter which outputs a first current-supply signal or a second current-supply signal to the three-phase armature coil when the first drive signal or the second drive signal is input. For any two of the three phases, a duty value when the duty of the applied voltages is the same is larger in the second control mode than in the first control mode.

公开(公告)号：US20190186596A1

公开(公告)日：2019-06-20

申请号：US16301934

申请日：2017-06-15

Applicant: Mitsuba Corporation

Inventor： Tomoyasu Sugiyama ,  Yoshichika Kawashima ,  Yosuke Harigai ,  Masaki Hayata

IPC: F16H1/16 ,  F16H57/021 ,  F16H57/039 ,  H02K5/04 ,  H02K7/116

CPC classification number: F16H1/16 ,  F16H57/021 ,  F16H57/039 ,  F16H2057/02034 ,  F16H2057/0213 ,  H02K5/04 ,  H02K7/116 ,  H02K15/14

Abstract: A speed reducer-attached motor includes a rotation shaft on which a worm gear is provided and which is supported rotatably around a central axis via a plurality of bearings, a motor part that is driven to be rotated around the rotation shaft as a central axis, a speed reducer part that includes at least one or more gears which include a worm wheel that is engaged with the worm gear, and a casing on which a shaft accommodation groove that accommodates the rotation shaft, a bearing accommodation recess part that accommodates the bearing, and an accommodation recess part that accommodates the speed reducer part are formed, wherein the shaft accommodation groove, the bearing accommodation recess part, and the accommodation recess part open at a top surface portion side of the casing.

公开(公告)号：US20240072605A1

公开(公告)日：2024-02-29

申请号：US18334359

申请日：2023-06-13

Applicant: MITSUBA Corporation

Inventor： TEPPEI TOKIZAKI ,  Motoaki Kobayashi ,  Satoshi Tamura ,  Masaki Hayata ,  Masakazu Saito ,  Yoshichika Kawashima

IPC: H02K7/116 ,  F16H1/08

CPC classification number: H02K7/116 ,  F16H1/08 ,  B60S1/08

Abstract: A brushless motor includes a motor part and a gear part. The motor part includes: a rotating shaft, having a first gear; a rotor, having a bottom wall and a side wall, the bottom wall being fixed to the rotating shaft; magnets, fixed to the side wall and arranged side by side in a circumferential direction of the rotor; a stator, provided between the rotating shaft and the magnets in a radial direction of the rotor and wound with a coil; and a motor housing, rotatably supporting the rotating shaft, and accommodating the rotor and the stator. The gear part includes: a second gear, meshed with the first gear; an output shaft, having an output part, having a base end side thereof fixed to the second gear, and parallel to the rotating shaft; and a gear housing, rotatably supporting the output shaft, and accommodating the second gear.