公开(公告)号：US20180287455A1

公开(公告)日：2018-10-04

申请号：US15936528

申请日：2018-03-27

Applicant: Nidec Tosok Corporation

Inventor： Yutaka UEMATSU ,  Kazumi SHINKAI ,  Shuichi KINJO

IPC: H02K5/22 ,  H02K7/116 ,  H02K11/215 ,  H02K11/33 ,  F16H1/32 ,  F16H57/02

CPC classification number: H02K5/225 ,  F16H1/32 ,  F16H57/02 ,  F16H2001/325 ,  F16H2057/02034 ,  H02K7/116 ,  H02K11/215 ,  H02K11/33 ,  H02K11/38 ,  H02K2211/03

Abstract: An electric actuator includes a motor, a speed reduction mechanism, a case, an output portion, a first board, a rotation detection device that detects rotation of the output portion, a connector portion, a first wiring member electrically connected to electrical wiring via the connector portion, and a second wiring member electrically connected to the rotation detection device. The case includes a first case and a second case. The first board is accommodated in the first case. The rotation detection device is accommodated in the second case. The first wiring member includes a first connecting portion held in the first case. The second wiring member includes a second connecting portion held in the second case. The first connecting portion is exposed on one side in the axial direction of the first case. The second connecting portion is exposed on the other side in the axial direction of the second case.

公开(公告)号：US20200251958A1

公开(公告)日：2020-08-06

申请号：US16737881

申请日：2020-01-08

Applicant: NIDEC TOSOK CORPORATION

Inventor： Shuichi KINJO ,  Hiroshi SHIRAI ,  Yutaka UEMATSU

IPC: H02K7/116 ,  H02K7/00 ,  H02K7/08

Abstract: An electric actuator includes a motor including a rotor having a motor shaft extending along a central axis and a stator, a deceleration mechanism connected to the motor shaft, an output shaft, a first bearing, a second bearing, and a deceleration mechanism case. The first bearing is fitted on an eccentric axis part of the motor shaft. The deceleration mechanism includes an internal gear in a ring shape, an external gear connected to the eccentric axis part, and an output flange part which transmits rotation of the external gear around the central axis to the output shaft. The deceleration mechanism case includes a case body and a cup member. The cup member includes a first cylinder part to which the internal gear is fitted on the radial-direction inner side, and a second cylinder part to which the second bearing is fitted on the radial-direction inner side.

公开(公告)号：US20200007010A1

公开(公告)日：2020-01-02

申请号：US16441012

申请日：2019-06-14

Applicant: NIDEC TOSOK CORPORATION

Inventor： Hiroshi SHIRAI ,  Yutaka UEMATSU ,  Kazuhiro SAITO ,  Shuichi KINJO ,  Toshihiko AKIBA ,  Koichi ISHIGE

IPC: H02K11/215 ,  H02K7/00 ,  H02K7/116 ,  H02K5/04

Abstract: One aspect of an electric actuator of the disclosure includes: a motor having a motor shaft rotating about a central axis; a speed reduction mechanism connected to a portion on one side in an axial direction of the motor shaft; a case accommodating the motor and the speed reduction mechanism; an output part to which rotation of the motor shaft is transmitted via the speed reduction mechanism; a rotation detector having a rotation sensor detecting rotation of the output part; and a wiring member electrically connected with the rotation sensor. The case has a first concave part located on an outer surface of the case. One end part of the wiring member penetrates the case from inside the case and protrudes inside the first concave part. The rotation sensor is located inside the first concave part and connected with one end part of the wiring member.

公开(公告)号：US20190207473A1

公开(公告)日：2019-07-04

申请号：US16234591

申请日：2018-12-28

Applicant: NIDEC TOSOK CORPORATION

Inventor： Shun KATO ,  Yutaka UEMATSU ,  Tadayuki HATSUDA ,  Yuzo AKASAKA

IPC: H02K7/116 ,  H02K5/08 ,  H02K5/173 ,  H02K5/22 ,  H02K7/08 ,  H02K11/215 ,  H02K21/14 ,  F16H63/34

CPC classification number: H02K7/116 ,  F16H63/3466 ,  G01D5/14 ,  H02K5/08 ,  H02K5/1732 ,  H02K5/225 ,  H02K7/083 ,  H02K11/215 ,  H02K21/14 ,  H02K2211/03

Abstract: An electric actuator includes: a motor part, having a motor shaft that extends in an axial direction and is rotated in both directions; a deceleration mechanism, connected to the motor shaft; a circuit board, electrically connected to the motor part; an output part, having an output shaft to which rotation of the motor shaft is transmitted through the deceleration mechanism; a sensor magnet, attached to the motor shaft; and a motor part sensor, detecting a magnetic field of the sensor magnet and detecting rotation of the motor shaft. The motor part has a rotor magnet that is fixed to the motor shaft. The rotor magnet and the sensor magnet each have multiple magnetic poles in a circumferential direction around the motor shaft. The magnetic poles of the rotor magnet and the magnetic poles of the sensor magnet are disposed to be shifted from each other in the circumferential direction.

公开(公告)号：US20190036422A1

公开(公告)日：2019-01-31

申请号：US16041843

申请日：2018-07-23

Applicant: NIDEC TOSOK CORPORATION

Inventor： Hiroshi SHIRAI ,  Shuichi KINJO ,  Yutaka UEMATSU ,  Kenichi OZAWA

IPC: H02K11/21 ,  H02K7/116 ,  F16H63/30 ,  H02K5/22 ,  H02K7/06 ,  F16H1/06 ,  G01D5/14 ,  H02P8/34

Abstract: An electric actuator includes a first wiring member with a first connection portion exposed to one side in an axial-direction of a first case and a second wiring member with a second connection portion exposed to another side in the axial-direction of a second case, the first and second connection portions each having two opposing portions that respectively oppose in first and second directions with first and second gaps therebetween, the first gap having a narrow portion and a wide portion (larger in the first direction) connected thereto on the other side in the axial-direction, the second gap having a narrow portion and a wide portion (larger in the second direction) connected thereto on the one side in the axial-direction, and the first and second gaps overlapping at least partially when the first and second case are fixed, and the first and second connection portions are electrically connected.

公开(公告)号：US20200251959A1

公开(公告)日：2020-08-06

申请号：US16740487

申请日：2020-01-13

Applicant: NIDEC TOSOK CORPORATION

Inventor： Shuichi KINJO ,  Hiroshi SHIRAI ,  Yutaka UEMATSU

IPC: H02K7/116 ,  H02K7/00 ,  H02K7/08 ,  H02K5/22

Abstract: An electric actuator includes a motor including a rotor having a motor shaft extending along a central axis and a stator, a deceleration mechanism connected to the motor shaft, an output shaft, a bearing, and a deceleration mechanism case. The motor shaft includes an eccentric axis part with an eccentric axis as a center. The bearing is fitted on of the eccentric axis part. The deceleration mechanism includes an internal gear in a ring shape; an external gear connected to the eccentric axis part via the bearing and engaging with the internal gear; and an output flange part which transmits rotation of the external gear around the central axis to the output shaft. The deceleration mechanism case includes a plurality of gear supporting parts which support an end surface of the internal gear facing one axial-direction side and which are disposed in a circumferential direction with intervals from one another.

公开(公告)号：US20200014284A1

公开(公告)日：2020-01-09

申请号：US16492963

申请日：2018-03-19

Applicant: Nidec Tosok Corporation

Inventor： Yutaka UEMATSU ,  Tadayuki HATSUDA ,  Kazumi SHINKAI ,  Shun KATO ,  Shuichi KINJO ,  Fumito TAMURA

IPC: H02K11/215 ,  H02K7/116

Abstract: An electric actuator includes a motor that includes a motor shaft extending axially, a decelerator that is joined to one axial side of the motor shaft, an output that includes an output shaft to which rotation of the motor shaft is transmitted via the decelerator, and a control board that is electrically connected to at least the motor. The motor and the output are disposed radially side by side with respect to the motor, the control board extends from a position axially overlapping the motor shaft to a position axially overlapping the output shaft, and the control board includes a motor sensor that detects a rotation angle of the motor shaft, and an output sensor that detects a rotation angle of a driven shaft joined to the output shaft.

公开(公告)号：US20190207474A1

公开(公告)日：2019-07-04

申请号：US16234596

申请日：2018-12-28

Applicant: NIDEC TOSOK CORPORATION

Inventor： Yutaka UEMATSU ,  Shun KATO ,  Ryunosuke OIKAWA ,  Yuzo AKASAKA ,  Kazumi SHINKAI

IPC: H02K7/116 ,  H02K5/08 ,  H02K5/173 ,  H02K5/22 ,  H02K7/08 ,  H02K11/215 ,  H02K21/14 ,  F16H57/02 ,  F16H19/00

CPC classification number: H02K7/116 ,  F16H1/32 ,  F16H19/001 ,  F16H57/02 ,  F16H61/32 ,  F16H2001/325 ,  F16H2057/02034 ,  H02K5/08 ,  H02K5/1732 ,  H02K5/225 ,  H02K7/083 ,  H02K11/215 ,  H02K21/14 ,  H02K2211/03

Abstract: An electric actuator is provided and includes: a motor unit having a motor shaft extending in an axial direction, a speed reducer connected to one side of the motor shaft in the axial direction, an output section having an output shaft to which rotation of the motor shaft is transmitted via the speed reducer, and a housing configured to accommodate the motor unit, the speed reducer and the output section. The output shaft extends in the axial direction of the motor shaft. The housing has a housing main body with a polygonal shape when seen in the axial direction. The motor shaft and the output shaft are disposed to be arranged along a diagonal line of the housing main body when seen in the axial direction. The output shaft is disposed on a corner portion of the housing main body when seen in the axial direction.

公开(公告)号：US20190207472A1

公开(公告)日：2019-07-04

申请号：US16234514

申请日：2018-12-27

Applicant: NIDEC TOSOK CORPORATION

Inventor： Yutaka UEMATSU ,  Shun KATO ,  Ryunosuke OIKAWA ,  Yuzo AKASAKA ,  Kazumi SHINKAI

IPC: H02K7/116 ,  H02K5/08 ,  H02K5/173 ,  H02K5/22 ,  H02K7/08 ,  H02K11/215 ,  H02K21/14 ,  F16H61/00 ,  F16H61/32

CPC classification number: H02K7/116 ,  F16H1/32 ,  F16H19/001 ,  F16H57/02 ,  F16H61/0006 ,  F16H61/32 ,  F16H2001/325 ,  F16H2057/02034 ,  H02K5/08 ,  H02K5/1732 ,  H02K5/225 ,  H02K7/083 ,  H02K11/215 ,  H02K21/14 ,  H02K2211/03

Abstract: An electric actuator includes: a motor unit that has a motor shaft and a rotor main body; a speed reducer; a circuit board; an output section; a detection target section; a motor unit sensor; a preload member; and a support section. The motor shaft passes through a through-hole and penetrates through the circuit board in an axial direction. The detection target section is attached to a portion, which protrudes to one side in the axial direction beyond the circuit board, of the motor shaft. The detection target section faces a surface of the circuit board via a gap. The motor unit sensor is fixed to a portion, which faces the detection target section via a gap, of a surface of the circuit board. The preload member applies a preload to the motor shaft toward the other side in the axial direction and presses the motor shaft against the support section.

公开(公告)号：US20190207470A1

公开(公告)日：2019-07-04

申请号：US16234476

申请日：2018-12-27

Applicant: NIDEC TOSOK CORPORATION

Inventor： Yutaka UEMATSU ,  Shun KATO ,  Ryunosuke OIKAWA ,  Yuzo AKASAKA ,  Kazumi SHINKAI

IPC: H02K7/116 ,  H02K5/08 ,  H02K5/173 ,  H02K5/22 ,  H02K7/08 ,  H02K11/215 ,  H02K21/14 ,  F16H61/00 ,  F16H19/00 ,  F16H57/02 ,  F16H1/32

CPC classification number: H02K7/116 ,  F16H1/32 ,  F16H19/001 ,  F16H57/02 ,  F16H61/0006 ,  F16H61/32 ,  F16H2001/325 ,  F16H2057/02034 ,  H02K5/08 ,  H02K5/1732 ,  H02K5/225 ,  H02K7/083 ,  H02K11/215 ,  H02K21/14 ,  H02K2211/03

Abstract: An electric actuator for rotating a driven shaft is provided, and includes: a motor unit, a speed reducer, a circuit board and an output section. A motor shaft of the motor unit and an output shaft of the output section are disposed apart from each other in a radial direction of the motor shaft. A rotor main body of the motor unit is fixed to a portion on the other side of the motor shaft in the axial direction. The output shaft has a cylindrical shape extending in the axial direction of the motor shaft and having an opening section on the other side in the axial direction. The driven shaft is inserted and connected to the output shaft via the opening section from the other side in the axial direction. The output shaft is disposed at a position overlapping the rotor main body in the radial direction.