Pulley device for tensioner or idler

Patent metadata

Field	Value
Publication number	US-10082200-B2
Application number	US-201615143696-A
Country	US
Kind code	B2
Filing date	May 2, 2016
Priority date	May 4, 2015
Publication date	Sep 25, 2018
Grant date	Sep 25, 2018

Abstract

The invention relates to a pulley device for tensioner or idler for a belt or a chain having a pulley, a bearing, a spacer supporting the bearing and including a through bore, a fastening screw extending in the bore, and an axial retention member for the screw, the axial retention member being fixed to the spacer and providing a retention member that cooperates with the screw.

First claim

The invention claimed is:

1. A pulley device for a tensioner or an idler for a belt or a chain comprising:
a pulley,
a bearing,
a spacer supporting the bearing and having a through bore,
a fastening screw extending in the bore, and
an axial retention member for the screw, the axial retention member being fixed to the spacer and providing retention means cooperating with the screw, wherein
the axial retention member further provides a fixing portion with a rib extending in an annular groove provided to an outer surface of the spacer, and
wherein the retention means of the axial retention member are elastically deformable at least in the axial direction and cooperate with the screw by contact.

2. The device according to claim 1 , wherein the bore of spacer provides a chamfer, the retention means of the axial retention member being radially disposed in the chamfer.

3. The device according to claim 1 , wherein the axial retention member includes a support portion being in axial abutment against an end surface of the spacer.

4. The device according to the claim 3 , wherein the retention means extend radially towards the interior from the support portion.

5. The device according to claim 1 , wherein the axial retention member is mounted with radial contact against the bore of bearing.

6. The device according to claim 1 , wherein the axial retention member provides a collar extending the retention portion and mounted axially in abutment against the bearing.

7. The device according to claim 1 , wherein the axial retention member comprises a clip and the retention means comprises a tongue or flange extending axially into the spacer and radially toward an axis of rotation of the pulley.

8. The pulley according to claim 7 , wherein the tongue or flange engages an outer surface of the fastening screw.

9. The pulley according to claim 7 , wherein the tongue or flange engages a threaded outer surface of the fastening screw.

10. The pulley according to claim 7 , wherein the tongue or flange engages an unthreaded outer surface of the fastening screw.

11. A pulley device for a tensioner or an idler for a belt or a chain comprising:
a pulley,
a bearing,
a spacer supporting the bearing and having a through bore,
a fastening screw extending in the bore, and
an axial retention member for the screw, the axial retention member being fixed to the spacer and providing retention means cooperating with the screw, wherein
the axial retention member further provides a fixing portion with a rib extending in an annular groove provided to an outer surface of the spacer, and
wherein the retention means of the axial retention member extend obliquely towards the screw and are able to axially block the screw by arc boutement effect.

12. The device according to claim 11 , wherein the axial retention member comprises a clip and the retention means comprises a tongue or flange extending axially into the spacer and radially toward an axis of rotation of the pulley.

13. The pulley according to claim 12 , wherein the tongue or flange engages an outer surface of the fastening screw.

14. The pulley according to claim 12 , wherein the tongue or flange engages a threaded outer surface of the fastening screw.

15. The pulley according to claim 12 , wherein the tongue or flange engages an unthreaded outer surface of the fastening screw.

16. A pulley device for a tensioner or an idler for a belt or a chain comprising:
a pulley having an axis of rotation,
a bearing,
a spacer supporting the bearing and having a through bore and an outer surface and an annular groove in the outer surface,
a fastening screw extending in the bore, and
a clip configured to axially retain the screw in the spacer, the clip being fixed to the spacer and including a tongue or flange extending axially into the spacer and radially toward the axis of rotation and including a rib projecting into the annular groove.

17. The pulley according to claim 16 , wherein the tongue or flange engages an outer surface of the fastening screw.

18. The pulley according to claim 17 , wherein the tongue or flange engages a threaded outer surface of the fastening screw.

19. The pulley according to claim 17 , wherein the tongue or flange engages an unthreaded outer surface of the fastening screw.

Assignees

• Lescorail Romuald
• Liege Frederic
• Skf Ab

Inventors

• Lescorail Romuald
• Liege Frederic

Classifications

• F16C2361/63

  Gears with belts and pulleys · CPC title

• F16C35/073

  between shaft and inner race ring · CPC title

• F16C13/006

  Guiding rollers, wheels or the like, formed by or on the outer element of a single bearing or bearing unit, e.g. two adjacent bearings, whose ratio of length to diameter is generally less than one · CPC title

• F16H7/20

  Mountings for rollers or pulleys · CPC title

• F16H55/36 Primary

  Pulleys (with features essential for adjustment F16H55/52) · CPC title