公开(公告)号：US10270321B2

公开(公告)日：2019-04-23

申请号：US15128491

申请日：2015-05-13

Applicant: Mitsuba Corporation

Inventor： Natsumi Tamura ,  Tomoo Iijima ,  Teppei Tokizaki ,  Satoshi Tamura

IPC: H02K13/10 ,  H02K5/14 ,  H02K5/22 ,  H02K7/116 ,  H02K11/026 ,  H02K11/38 ,  H02K13/00 ,  B60S1/08 ,  B60S1/16

Abstract: An electric motor includes: brushes (31) that are brought into sliding contact with a commutator of an armature that is fixed to a rotation shaft and feeds electric power; a brush holder stay (33) that supports the brushes (31) via brush holders (41); noise prevention elements (110) that are electrically connected to the brushes (31); and terminals (130) and jump wires (141) that electrically connect between the brush holders (41) and the noise prevention elements (110), wherein first connection portions, which connect between the noise prevention elements (110) and the terminals (130), and second connection portions, which connect between the terminals (130) and the jump wires (141), are both disposed only on a first surface (S1) of the brush holder stay (33).

公开(公告)号：US20180083507A1

公开(公告)日：2018-03-22

申请号：US15562245

申请日：2016-04-12

Applicant: Mitsuba Corporation

Inventor： Teppei Tokizaki ,  Satoshi Tamura ,  Natsumi Tamura ,  Hiroto Tanaka

IPC: H02K5/24 ,  B60S1/26 ,  F16D65/00 ,  H02K7/10

CPC classification number: H02K5/24 ,  B60S1/26 ,  F16D65/0006 ,  F16D2121/24 ,  F16H1/32 ,  H02K3/522 ,  H02K5/225 ,  H02K7/1004 ,  H02K7/116 ,  H02K11/33

Abstract: A motor with a speed reducer includes a motor (4) received in a motor housing (2), a speed reducer (5) received in the motor housing (2) and that is driven by receiving power from a motor shaft of the motor (4) and that reduces rotation of a rotor boss (43) and outputs the reduced rotation, and a drive shaft (7) received in the motor housing (2), connected to an output shaft (58) of the speed reducer (5) via a transmission belt (6) and that drives a driven body, wherein the rotor boss (43) and the output shaft (58) are disposed coaxially, and the output shaft (58) and the drive shaft (7) are disposed parallel in a radial direction.

公开(公告)号：US09614422B2

公开(公告)日：2017-04-04

申请号：US14355854

申请日：2012-10-31

Applicant: Mitsuba Corporation

Inventor： Kenji Yasumoto ,  Teppei Tokizaki ,  Shigeki Ota

IPC: H02K5/14 ,  H02K5/22 ,  H02K7/116 ,  H02K13/00 ,  H02K15/14

CPC classification number: H02K13/00 ,  H02K5/148 ,  H02K5/225 ,  H02K7/1166 ,  H02K15/14 ,  Y10T29/49011

Abstract: In an electric motor apparatus including an electric motor (13), a speed-reduction mechanism (14) which transmits motive power of the electric motor (13), a housing (15) which accommodates the speed-reduction mechanism (14) and the electric motor (13), and a yoke (16a) fixed to an outer portion of the housing (15), the housing (15) is provided with a concave portion (21), a holding hole (18a), and an accommodation chamber (15a). A connector unit (25) is moved along the first direction and installed to a concave portion (21). A brush holder (26) is moved along the second direction and installed to the holding hole (18a). The speed-reduction mechanism (14) is moved along the first direction and accommodated in the accommodation chamber (15a). The yoke (16a) is moved along the second direction and fixed to the housing (15). Therefore, no restriction is imposed on the routing of an external connector connected to the connector unit (25).

公开(公告)号：US20150244224A1

公开(公告)日：2015-08-27

申请号：US14422456

申请日：2013-08-23

Applicant: Mitsuba Corporation

Inventor： Yoshichika Kawashima ,  Teppei Tokizaki ,  Natsumi Tamura

IPC: H02K3/28 ,  H02K13/04

CPC classification number: H02K3/28 ,  H02K3/522 ,  H02K3/527 ,  H02K13/04 ,  H02K23/30

Abstract: When teeth (12) are allocated in a circumferential direction in sequence of a U phase, a V phase and a W phase, a forward wound coil wound on each of the phases is provided as a coil of the U phase, the V phase and the W phase, and a reverse wound coil wound on each of the phases is provided as the coil of a −U phase, a −V phase and a −W phase, the coils are electrically connected between the neighboring segments in an order of the U phase, the −W phase, the −W phase, the V phase, the −U phase, the −U phase, the W phase, the −V phase and the −V phase, and the wire (14) drawn between the armature core (8) and the commutator (10) is drawn around the rotation shaft in the same direction.

Abstract translation: 当在U相，V相和W相的顺序上沿圆周方向分配齿（12）时，作为U相的线圈，V相和V相设置卷绕在各相的绕组线圈 W相和缠绕在各相中的反绕绕线圈被提供为-U相，-V相和--w相的线圈，线圈以相邻的段之间的顺序电连接 U相，-W相，-W相，V相，-U相，-U相，W相，-V相和-V相，以及在 电枢铁芯（8）和换向器（10）沿相同的方向围绕旋转轴线拉伸。

公开(公告)号：US12209639B1

公开(公告)日：2025-01-28

申请号：US18605860

申请日：2024-03-15

Applicant: MITSUBA Corporation

Inventor： Motoaki Kobayashi ,  Teppei Tokizaki ,  Tohru Yumoto ,  Nobuyuki Nagai

IPC: F16H1/34 ,  F16H57/08

Abstract: A fifth ball bearing that rotatably supports a rotating shaft is provided on one side of a pinion gear in an axial direction of the rotating shaft. A sixth ball bearing that rotatably supports the rotating shaft is provided on the other side of the pinion gear in the axial direction of the rotating shaft. A carrier is provided with a bearing fixing portion that supports the fifth ball bearing immovably in the axial direction of the rotating shaft, and a bearing guide portion that supports the sixth ball bearing movably in the axial direction of the rotating shaft. The fifth and sixth ball bearings are provided so as not to be close to each other in the axial direction of the rotating shaft, and a female screw portion has a rattling adjustment member that presses the sixth ball bearing toward the side where the fifth ball bearing is provided.

公开(公告)号：US12095342B2

公开(公告)日：2024-09-17

申请号：US18501019

申请日：2023-11-02

Applicant: MITSUBA Corporation

Inventor： Naoki Kojima ,  Motoaki Kobayashi ,  Teppei Tokizaki ,  Yoshichika Kawashima

IPC: H02K7/11 ,  F16H55/08 ,  H02K7/116 ,  F16H1/08 ,  F16H55/06 ,  H02K5/22

CPC classification number: H02K7/116 ,  F16H55/08 ,  F16H1/08 ,  F16H55/06 ,  H02K5/225

Abstract: A deceleration mechanism is provided with first and second gears, a first tooth part arranged in the first gear and extending spirally in an axial direction of the first gear, an engagement projected part arranged on the first tooth part, second tooth parts arranged on the second gear, and an engagement recessed part arranged between the adjacent second tooth parts. The engagement projected part is formed in an arc shape in a direction orthogonal to the axial direction of the first gear and has a curvature center eccentric from a rotation center of the first gear. The second tooth parts are inclined with respect to the axial direction of the first gear and arranged in a circumferential direction of the second gear. The engagement projected part is formed in an arc-shape in a direction orthogonal to the axial direction of the first gear and engaged with the engagement projected part.

公开(公告)号：US12044290B2

公开(公告)日：2024-07-23

申请号：US18037564

申请日：2022-03-31

Applicant: MITSUBA Corporation

Inventor： Motoaki Kobayashi ,  Teppei Tokizaki

IPC: F16H1/08 ,  F16H55/08

CPC classification number: F16H1/08 ,  F16H55/08

Abstract: When viewed in the axial direction of a pinion gear (31), the center (C1) of a pinion main body (31b) and the center (C2) of a helical tooth (31c) are offset from each other, the helical tooth (31c) has a larger diameter than the pinion main body (31b), and the pinion main body (31b) partially protrudes outside an imaginary circle (VC) that forms the outer shape of the helical tooth (31c). A cross-sectional shape of the pinion gear (31) can be made non-circular with the pinion main body (31b) partially protruding outside the imaginary circle (VC) that forms the outer shape of the helical tooth (31c).

公开(公告)号：US10756584B2

公开(公告)日：2020-08-25

申请号：US15560187

申请日：2016-04-25

Applicant: Mitsuba Corporation

Inventor： Teppei Tokizaki ,  Yoshichika Kawashima ,  Natsumi Tamura

IPC: H02K29/03 ,  H02K23/04 ,  H02K1/26 ,  H02K23/40 ,  H02K1/17 ,  H02K13/00

Abstract: In an electric motor (2) which includes four permanent magnets (12) and in which the number of teeth (20) and the number of slots (23) are set to 6, when a polar arc angle of the permanent magnet (12) is θ1, and a skew angle of the teeth (20) and the slots (23) is θ2, the polar arc angle θ1 and the skew angle θ2 are set so as to satisfy 50°≤θ1

公开(公告)号：US10404112B2

公开(公告)日：2019-09-03

申请号：US16058355

申请日：2018-08-08

Applicant: Mitsuba Corporation

Inventor： Yoshichika Kawashima ,  Teppei Tokizaki ,  Natsumi Tamura

IPC: H02K1/22 ,  H02K23/18 ,  H02K23/32 ,  H02K23/40 ,  H02K1/26 ,  H02K13/04 ,  H02K7/116

Abstract: An electric motor includes a yoke having six magnetic poles; a rotary shaft which is provided inside the yoke in a freely rotatable manner; an armature core (6) which has teeth (36) attached to the rotary shaft, radially extending in a radial direction and set in an arrangement of an even number, and an even number of slots (37) formed between the teeth; an armature coil (7) which is wound around the teeth in a single wave winding; and a commutator (13) which is provided in the rotary shaft to be adjacent to the armature core (6) and has a plurality of circumferentially disposed segments (41) to which the armature coil (7) is connected.

公开(公告)号：US10367401B2

公开(公告)日：2019-07-30

申请号：US15112537

申请日：2015-03-05

Applicant: MITSUBA CORPORATION

Inventor： Natsumi Tamura ,  Hiroto Tanaka ,  Teppei Tokizaki ,  Satoshi Tamura

IPC: H02K23/00 ,  H02K23/38 ,  H02K3/18 ,  H02K3/28 ,  H02K1/17 ,  H02K1/24 ,  H02K1/26 ,  H02K3/12 ,  H02K7/08 ,  H02K7/10 ,  H02K13/00 ,  H02K23/26 ,  H02K7/116

Abstract: In a 4-pole, 6-slot, 18-segment electric motor, one forward winding coil (91) and two reverse winding coils (92, 93) are wound on each tooth (12). When the forward winding coils are formed of coils corresponding to a U phase, a V phase, and a W phase and the reverse winding coils are formed of coils corresponding to a “−U” phase, a “−V” phase, and a “−W” phase, the coils, which correspond to a U phase, a “−W” phase, a “−W” phase, a V phase, a “−U” phase, a “−U” phase, a W phase, a “−V” phase, and a “−V” phase, are electrically connected in this order between the adjacent segments. When the number of turns of the coils (91) corresponding to a U phase, a V phase, and a W phase is denoted by T1, the number of turns of the coils (92), which correspond to a “−U” phase, a “−V” phase, and a “−W” phase and first come into sliding contact with a brush, is denoted by T2, and the number of turns of the coils (93), which correspond to a “−U” phase, a “−V” phase, and a “−W” phase and later come into sliding contact with the brush, is denoted by T3, “T2>T1>T3” is satisfied.