Rotation transmission mechanism and damper device

Patent metadata

Field	Value
Publication number	US-10677333-B2
Application number	US-201715847106-A
Country	US
Kind code	B2
Filing date	Dec 19, 2017
Priority date	Dec 20, 2016
Publication date	Jun 9, 2020
Grant date	Jun 9, 2020

Abstract

A rotation transmission mechanism may include a drive wheel structured to rotate to one side, a driven wheel turned by the drive wheel to one side, and an urging member urging the driven wheel to turn to the other side. The drive wheel may include a drive teeth forming part where drive teeth structured to turn the driven wheel to the one side are provided at positions different from each other in an axial line direction, and a cam face forming part on which the driven wheel is slid. The driven wheel is provided with a driven teeth forming part where driven teeth provided at positions different from each other in an axial line direction are disposed over an angular range so that, when the drive wheel is turned to the one side, the drive teeth are sequentially abutted with the driven teeth.

First claim

What is claimed is:

1. A rotation transmission mechanism comprising:
a drive wheel structured to rotate to one side around a first axial line;
a driven wheel which is driven and turned by the drive wheel to one side around a second axial line parallel to the first axial line; and
an urging member structured to urge the driven wheel to the other side around the second axial line;
wherein the drive wheel comprises:
a drive teeth forming part in which a plurality of drive teeth structured to drive and turn the driven wheel to the one side around the second axial line is disposed in a circumferential direction; and
a cam face forming part on which the driven wheel is slid when the driven wheel is turned to the other side around the second axial line by an urging force of the urging member;

wherein the drive teeth forming part and the cam face forming part are provided so as to be adjacent to each other in the circumferential direction;
wherein the driven wheel comprises a driven teeth forming part in which a plurality of driven teeth is disposed over an angular range so that, when the drive wheel is turned to the one side around the first axial line, the drive teeth are sequentially abutted with the driven teeth;
wherein the plurality of the drive teeth is provided at positions different from each other in a first axial line direction along the first axial line;
wherein the plurality of the driven teeth is provided at positions different from each other in a second axial line direction along the second axial line; and
wherein the cam face forming part comprises a plurality of cam faces at positions different from each other in the first axial line direction on which the plurality of the driven teeth are sequentially slid when the driven wheel is turned to the other side around the second axial line by the urging force of the urging member.

2. The rotation transmission mechanism according to claim 1 , wherein an outer diameter of each of the plurality of the cam faces is reduced from the one side around the first axial line to the other side.

3. The rotation transmission mechanism according to claim 2 , wherein
the drive teeth forming part comprises the drive teeth one by one at the positions in the first axial line direction, and
the driven teeth forming part comprises the driven teeth one by one at the positions in the second axial line direction.

4. The rotation transmission mechanism according to claim 3 , wherein in each of regions where the plurality of the driven teeth are sequentially slid on the plurality of the cam faces, a subsequent driven tooth for a next region begins to contact with a subsequent corresponding cam face while the driven tooth in a current region is contacted with its corresponding cam face.

5. The rotation transmission mechanism according to claim 4 , wherein
in the plurality of the drive teeth, the drive tooth located on the most one side in the first axial line direction is located on the most other side around the first axial line,
in the plurality of the driven teeth, the driven tooth located on the most one side in the second axial line direction is located on the most other side around the second axial line, and
in the plurality of the cam faces, the cam face located on the most one side in the first axial line direction is located on the most one side around the first axial line.

6. The rotation transmission mechanism according to claim 5 , wherein
each of the plurality of the drive teeth is formed so that a face on the one side around the first axial line is formed to be a tooth face,
the drive wheel comprises a first step part which is formed at a position adjacent in the circumferential direction to the tooth face of a final drive tooth located on the most other side around the first axial line, and
the first step part comprises an outer peripheral face which intersects an end part on an outer side in a radial direction of the tooth face of the final drive tooth.

7. The rotation transmission mechanism according to claim 5 , wherein
each of the plurality of the driven teeth is formed so that a face on the other side around the second axial line is a tooth face,
the driven wheel comprises a second step part which is formed at a position adjacent in a circumferential direction to the tooth face of a first driven tooth located on the most one side around the second axial line, and
the second step part comprises an outer peripheral face which intersects an end part on an outer side in a radial direction of the tooth face of the first driven tooth.

8. The rotation transmission mechanism according to claim 7 , wherein
the driven wheel comprises an extended part which is formed by extending the driven teeth forming part to the most one side in the second axial line direction with respect to the first driven tooth, and
the second step part is formed in the extended part.

9. The rotation transmission mechanism according to claim 1 , wherein
the drive teeth forming part comprises the drive teeth one by one at the positions in the first axial line direction, and
the driven teeth forming part comprises the driven teeth one by one at the positions in the second axial line direction.

10. The rotation transmission mechanism according to claim 1 , wherein in each of regions where the plurality of the driven teeth are sequentially slid on the plurality of the cam faces, a subsequent driven tooth for a next region begins to contact with a subsequent corresponding cam face while the driven tooth in a current region is contacted with the corresponding cam face.

11. The rotation transmission mechanism according to claim 1 , wherein
in the plurality of the drive teeth, the drive tooth located on the most one side in the first axial line direction is located on the most other side around the first axial line,
in the plurality of the driven teeth, the driven tooth located on the most one side in the second axial line direction is located on the most other side around the second axial line, and
in the plurality of the cam faces, the cam face located on the most one side in the first axial line direction is located on the most one side around the first axial line.

12. The rotation transmission mechanism according to claim 11 , wherein
each of the plurality of the drive teeth is formed so that a face on the one side around the first axial line is a tooth face, and
the drive wheel comprises a drive tooth pitch measuring step part which intersects an end part on an outer side in a radial direction of the tooth face of a final drive tooth located on the most other side around the first axial line.

13. The rotation transmission mechanism according to claim 11 , wherein
each of the plurality of the driven teeth is formed so that a face on the other side around the second axial line is a tooth face,
the driven wheel comprises a driven tooth pitch measuring step part which intersects an end part on an outer side in a radial direction of the tooth face of a first driven tooth located on the most one side around the second axial line.

14. The rotation transmission mechanism according to claim 1 , wherein
the driven teeth forming part comprises a final driven tooth with which the drive teeth are not abutted on the one side around the second axial line with respect to the plurality of the driven teeth and on the other side in the second axial line direction with respect to the plurality of the driven teeth, and
the cam face forming part comprises a final cam face with which the final driven tooth is abutted.

15. The rotation transmission mechanism according to claim 14

Assignees

• Nidec Sankyo Corp

Inventors

• Yokoe Satoru
• Yazawa Takehiko

Classifications

• F16H37/122 Primary

  for interconverting rotary motion and oscillating motion · CPC title

• F25D17/045

  Air flow control arrangements · CPC title

• F16H25/18

  for conveying or interconverting oscillating or reciprocating motions · CPC title

• F16H25/16

  for interconverting rotary motion and oscillating motion · CPC title

• F25D2317/06

  with forced air circulation · CPC title