Cam phaser having a retention feature for aiding assembly

Patent metadata

Field	Value
Publication number	US-10247055-B2
Application number	US-201715406185-A
Country	US
Kind code	B2
Filing date	Jan 13, 2017
Priority date	Jan 13, 2017
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

A cam phaser has a stator, a rotor positioned in the stator and including a locking pin, a locking cover including a receiving feature for receiving the locking pin, a cover plate, and a check valve plate positioned between the stator and the locking cover and including a plurality of valve elements. The cam phaser also has a plurality of first openings in each of the stator, locking cover, and check valve plate, a plurality of second openings in the locking cover, and a third opening formed in the check valve plate. The cam phaser further includes a retention feature for aligning components of the cam phaser during assembly, the retention feature including one or more tabs on a first component and one or more indentations on a second component receiving the one or more tabs.

First claim

What is claimed is:

1. A cam phaser comprising:
a stator;
a rotor positioned in the stator and including a locking pin;
a locking cover including a receiving feature for receiving the locking pin;
a cover plate on an opposite side of the stator from the locking cover;
a check valve plate positioned between the stator and one of the locking cover or the cover plate, the check valve plate including a plurality of valve elements;
a plurality of first openings in each of the stator, locking cover, and check valve plate;
a plurality of second openings in the locking cover;
a third opening formed in the check valve plate; and
a retention feature for aligning components of the cam phaser during assembly, the retention feature including one or more tabs on the check valve plate and one or more indentations on a secondary component receiving the one or more tabs.

2. The cam phaser of claim 1 , wherein the one or more tabs extend perpendicular to a plane of the check valve plate.

3. The cam phaser of claim 1 , wherein the secondary component is the stator.

4. The cam phaser of claim 3 , wherein the one or more indentations are formed in a rim of the stator.

5. The cam phaser of claim 1 , wherein the secondary component is the locking cover.

6. The cam phaser of claim 5 , wherein the one or more indentations are formed at a perimeter edge of the locking cover.

7. The cam phaser of claim 1 , wherein the one or more indentations are formed in the stator and the locking cover.

8. The cam phaser of claim 7 , wherein the one or more tabs extend into the one or more indentations of only one of the stator or the locking cover.

9. The cam phaser of claim 1 , wherein the check valve plate is aligned with the stator and the locking cover such that the plurality of first openings are aligned for receiving a fastener; the plurality of second openings are aligned with the plurality of valve elements; and the third opening is aligned with the receiving feature such that the locking pin is configured to extend through the third opening into the receiving feature.

10. The cam phaser of claim 1 , wherein the one or more tabs and the one or more indentations are radially aligned with the plurality of first openings.

11. The method of claim 10 , wherein a third component also includes one or more indentations for receiving the one or more tabs and the one or more indentations of the third component remain empty after assembly of the cam phaser.

12. The method of claim 11 , wherein the first component is the check valve plate, the second component is the stator, and the third component is the locking cover.

13. The method of claim 11 , wherein the first component is the check valve plate, the second component is the locking cover, and the third component is the stator.

14. The cam phaser of claim 1 , wherein the one or more tabs include a plurality of tabs and the one or more indentations include a plurality of indentations.

15. A method of assembling a cam phaser, the method comprising:
positioning a stator, a rotor, a locking cover, and a check valve plate with respect to each other such that:
a plurality of first openings in the stator, locking cover, and check valve plate are aligned for receiving a fastener,
a plurality of second openings in the locking cover are aligned with a plurality of valve elements of the check valve plate; and
a third opening in the check valve plate is aligned with a receiving feature in the locking plate such that a locking pin on the rotor is configured to extend through the third opening into the receiving feature,

wherein positioning the check valve plate with at least one of the stator or the locking cover includes inserting one or more tabs on a first component into one or more indentations on a second component in order to align the first and second components with each other.

16. The method of claim 15 , wherein the first component is the check valve plate and the second component is the stator.

17. The method of claim 16 , wherein the one or more tabs extend perpendicular to a plane of the check valve plate into the one or more indentations, which are formed in a rim of the stator.

18. The method of claim 16 , wherein the first component is the check valve plate and the second component is the locking cover.

19. The method of claim 18 , wherein the one or more tabs extend perpendicular to a plane of the check valve plate.

Assignees

• Schaeffler Technologies Ag

Inventors

• De Oliveira Ghiraldi Renato
• Camilo Alexandre
• Cantin Peter

Classifications

• F01L2303/00

  Manufacturing of components used in valve arrangements · CPC title

• F01L2250/02

  the camshaft being driven by chains · CPC title

• F01L2001/34453

  Locking means between driving and driven members · CPC title

• F01L2001/34423

  Details relating to the hydraulic feeding circuit · CPC title

• F01L2001/34483

  Phaser return springs · CPC title