Actuator device

Patent metadata

Field	Value
Publication number	US-9728924-B2
Application number	US-201514614721-A
Country	US
Kind code	B2
Filing date	Feb 5, 2015
Priority date	Feb 7, 2014
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

An actuator device includes: a motor that is a driving source; a reduction gear that decelerates rotation of the motor; an accommodating member that accommodates the reduction gear; and a conductive member that is disposed integrally with the accommodating member and is in sliding contact with the reduction gear so that a ground circuit capable of grounding the reduction gear is formed.

First claim

What is claimed is:

1. An actuator device comprising:
a motor that is a driving source;
a reduction gear that decelerates rotation of the motor;
an accommodating member that accommodates the reduction gear; and
a conductive member that is disposed integrally with the accommodating member and is in sliding contact with the reduction gear so that a ground circuit capable of grounding the reduction gear is formed.

2. The actuator device according to claim 1 ,
wherein the conductive member is in sliding contact with an axial-direction end portion of the reduction gear that faces the accommodating member.

3. The actuator device according to claim 2 ,
wherein the conductive member is provided with an annular portion that is disposed to face the reduction gear in an axial direction of the reduction gear.

4. The actuator device according to claim 2 ,
wherein the conductive member is provided with a protruding portion that protrudes from a facing surface on the accommodating member side to the reduction gear side.

5. The actuator device according to claim 1 ,
wherein the accommodating member is provided with a substrate accommodating chamber that accommodates a circuit board, and
wherein the conductive member is connected to a conductive portion for grounding that is formed on the circuit board.

6. The actuator device according to claim 1 ,
wherein the conductive member can form a ground circuit for the motor with the ground circuit for the reduction gear.

7. The actuator device according to claim 1 ,
wherein the conductive member is embedded in the accommodating member with an exposed portion by insert molding.

8. The actuator device according to claim 1 ,
wherein the conductive member is formed of a metal plate.

9. The actuator device according to claim 1 ,
wherein an electromagnetic clutch that is capable of cutting a torque transmission path of the motor is accommodated in the accommodating member.

Assignees

• Aisin Seiki

Inventors

• Ishida Toshihiko
• Otake Wataru
• Togitani Fumiaki

Classifications

• H02K11/40

  Structural association with grounding devices · CPC title

• H02K11/38

  Control circuits or drive circuits associated with geared commutator motors of the worm-and-wheel type · CPC title

• H01R39/08 Primary

  Slip-rings · CPC title

• H02K7/1166

  comprising worm and worm-wheel (structural association with bearings specially adapted for worm gear drives H02K7/081) · CPC title