Support assembly with cam assembly

Patent metadata

Field	Value
Publication number	US-10850644-B2
Application number	US-201816131404-A
Country	US
Kind code	B2
Filing date	Sep 14, 2018
Priority date	May 4, 2018
Publication date	Dec 1, 2020
Grant date	Dec 1, 2020

Abstract

A cam assembly includes a pin, a first cam, a second cam, and/or a bearing. The first cam may be connected to the pin, and/or the second cam may be connected to the pin. A bearing may be configured to rotatable support the pin. The second cam may include a first portion and/or a second portion. The first portion of the second cam may be configured to contact a track in a first vertical position of the pin. The second portion of the second cam may be configured to contact said track in a second vertical position of the pin. The first portion may be vertically offset from the second portion. The first position of the pin may correspond to an unloaded state. The second vertical position of the pin may correspond to a loaded state.

First claim

What is claimed is:

1. A cam assembly, comprising;
a pin;
a first cam connected to the pin;
a second cam connected to the pin; and
a bearing configured to rotatably support the pin;
wherein the second cam includes a first portion and a second portion;
the first portion of the second cam is configured to contact a track in a first vertical position of the pin;
the second portion of the second cam is configured to contact said track in a second vertical position of the pin; and
the first portion is vertically offset from the second portion.

2. The cam assembly of claim 1 , wherein the first vertical position of the pin corresponds to an unloaded state.

3. The cam assembly of claim 2 , wherein the second vertical position of the pin corresponds to a loaded state.

4. The cam assembly of claim 1 , wherein the second cam is in a first rotational position when the pin is in the first vertical position, and the second cam is in a second rotational position when the pin is in a second vertical position.

5. The cam assembly of claim 1 , wherein the first cam is circumferentially tapered.

6. The cam assembly of claim 5 , wherein the second cam is radially tapered.

7. The cam assembly of claim 6 , wherein the second cam is circumferentially tapered.

8. The cam assembly of claim 1 , wherein the first cam, the pin, and the second cam are configured to move vertically relative to the bearing.

9. The cam assembly of claim 1 , wherein the cam assembly includes a biasing member configured to vertically and rotationally bias the second cam.

10. The cam assembly of claim 9 , wherein the biasing member is configured to provide torsional forces to the second cam to compensate for vertical loads and cause the second cam to remain in contact with said track.

11. The cam assembly of claim 1 , wherein the second cam is disposed above a bottom end of the pin.

12. The cam assembly of claim 11 , wherein the second cam is stamped from sheet metal.

13. A support assembly, the support assembly comprising:
a support member including the cam assembly of claim 1 ; and
said track;
wherein the support member is configured for selectively connecting with said track and for selectively moving along said track.

14. The support assembly of claim 13 , wherein the support member includes an aperture; the bearing includes protrusion; and engagement of the protrusion with the aperture limits vertical movement of the bearing.

15. A cam for a track adjuster, the cam comprising:
a body, the body including
a first wing extending from the body; and
a second wing extending from the body;

wherein the first wing and the second wing are circumferentially tapered and radially tapered.

16. The cam of claim 15 , wherein a length of the body is greater than a width of the body; and the length of the body includes radial lengths of the first wing and the second wing.

17. The cam of claim 15 , wherein the first wing includes a tapered bottom surface.

18. The cam of claim 15 , wherein the first wing includes a thickness and a radial length, and the radial length is greater than the thickness.

19. The cam of claim 15 , wherein a bottom edge of the first wing is lower than a bottom edge of the body.

20. The cam of claim 15 , wherein a first circumferential edge of the first wing is parallel to a second circumferential edge of the second wing.

Assignees

• Lear Corp

Inventors

• Condamin Thibaud
• Hamtache Nordine
• Moulin Antoine

Classifications

• B60N2/20

  the back-rest being tiltable, e.g. to permit easy access (B60N2/04, B60N2/22 {, B60N2/3002} take precedence) · CPC title

• B60N2/072

  Complex cross-section, e.g. obtained by extrusion · CPC title

• B60N2/01541

  using moving hooks (B60N2/01583 takes precedence) · CPC title

• B60N2/0818 Primary

  inside the rail · CPC title

• B60N2/0806

  with pin alignment systems, e.g. with at least one of a plurality of locking pins always aligned w.r.t. at least one of a plurality of pin-receiving elements · CPC title