Dual cam latch

Patent metadata

Field	Value
Publication number	US-10647236-B2
Application number	US-201815880161-A
Country	US
Kind code	B2
Filing date	Jan 25, 2018
Priority date	Jan 25, 2018
Publication date	May 12, 2020
Grant date	May 12, 2020

Abstract

A latch assembly for a seating assembly includes a dual cam latch positioned on a sector arm. The sector arm includes first and second pins. The first pin operably couples a structural cam to the sector arm. The structural cam is operable between blocked and removed positions. An adjustment cam is operably coupled to the structural cam and the sector arm by the first pin. A locking hook is operably coupled to the sector arm by the second pin and is rotatable between a locked and unlocked positions. A return spring operably couples the locking hook with the structural cam. The locking hook is rotated to the unlocked position when the structural cam is drawn to the removed position. When the locking hook is rotated to the unlocked position, the sector arm is movable into a pitched position to provide entry space rearward of the seating assembly.

First claim

What is claimed is:

1. A latch assembly comprising:
a sector arm including a first pin and a second pin, wherein the first pin operably couples a structural cam to the sector arm, the structural cam being operable between a blocked position and a removed position;
a cinching spring positioned on the first pin;
an adjustment cam operably coupled to the structural cam and the sector arm by the first pin, wherein the adjustment cam includes a foot configured to abut the cinching spring;
a locking hook operably coupled to the sector arm by the second pin and rotatable between a locked position and an unlocked position, wherein a side edge of the locking hook abuts an edge of the adjustment cam when the locking hook is in the locked position, and further wherein the edge of the adjustment cam extends beyond a shelf of the structural cam, the shelf configured to selectively abut the side edge if the adjustment cam deforms; and
a return spring operably coupling the locking hook with the structural cam, wherein the locking hook is rotated to the unlocked position when the structural cam is drawn to the removed position.

2. The latch assembly of claim 1 , wherein the first pin defines an arbor, and further wherein the cinching spring is at least partially disposed within the arbor.

3. The latch assembly of claim 1 , wherein the cinching spring is configured to bias the structural cam and the adjustment cam in the blocked position.

4. The latch assembly of claim 1 , wherein a first force applied by the cinching spring on the adjustment cam is less than a second force applied by an actuator on the structural cam when the structural cam and the adjustment cam are in the removed position.

5. The latch assembly of claim 1 , further comprising:
a housing operably coupled with the sector arm by the first and second pins, wherein the housing includes a first portion positioned over the locking hook and a second portion positioned over the structural and adjustment cams, and further wherein the first portion includes an arm extending at least partially about the locking hook; and
a plate operably coupled with the sector arm by the first and second pins, the plate positioned between the housing and the locking hook and between the housing and the structural and adjustment cams.

6. A seat latch assembly comprising:
a sector arm including an arbor design pin and a cam pin;
a first cam including a tab;
a second cam defining a notch having an open end opposite an edge end and configured to selectively receive the tab through the open end, wherein both the first cam and the second cam are operably coupled to the sector arm by the arbor design pin, wherein the tab is configured to abut the edge end of the notch when the first cam is engaged with the second cam; and
a locking hook rotatably coupled to the sector arm by the cam pin and operably coupled to the first cam by a return spring.

7. The seat latch assembly of claim 6 , wherein the first cam and the second cam are operable between a blocked position and a removed position when the first cam is engaged with the second cam.

8. The seat latch assembly of claim 7 , wherein the locking hook is rotatable between a locked position and an unlocked position, the blocked position corresponding with the locked position and the removed position corresponding with the unlocked position, and further wherein the locking hook includes a first flange configured to abut one or both of the first and second cams when the locking hook is in the locked position.

9. The seat latch assembly of claim 8 , wherein the locking hook is configured to retain a striker pin when in the locked position.

10. The seat latch assembly of claim 6 , wherein a cinching spring is operably coupled to the arbor pin and the second cam, and further wherein the cinching spring includes a first extension that abuts a foot of the second cam and a second extension positioned within a slot of the arbor pin.

11. The seat latch assembly of claim 6 , wherein the tab is generally semi-cylindrical and is positioned so that a linear edge of the tab aligns with an edge of the first cam.

12. A vehicle seat latch assembly comprising:
a sector arm having a first end and a second end;
a housing operably coupled with the sector arm and positioned between the first end and the second end, wherein the housing includes an arm;
a first pin defining an arbor;
a first cam and a second cam operably coupled to the sector arm by the first pin;
a cinching spring disposed within the arbor and configured to bias the first cam and the second cam in a blocked position;
a plate operably coupled with the first pin and positioned between the second cam and the cinching spring; and
a locking hook rotatably coupled to the sector arm and further coupled to the first cam by a return spring, wherein the arm of the housing extends at least partially about the locking hook and is configured to guide rotation of the locking hook.

13. The vehicle seat latch assembly of claim 12 , wherein the housing is operably coupled to the sector arm by the first pin and a second pin.

14. The vehicle seat latch assembly of claim 12 , wherein the housing is configured to cover the locking hook, the first cam, and the second cam.

15. The vehicle seat latch assembly of claim 12 , wherein the plate separates the housing from the locking hook and the second cam.

16. The vehicle seat latch assembly of claim 12 , wherein the first cam is operably coupled to an actuator and actuatable between a blocked position and a removed position, and further wherein the actuator is operably coupled with a seatback.

17. The vehicle seat latch assembly of claim 12 , wherein the cinching spring includes an extension operably coupled to a foot of the second cam.

18. The vehicle seat latch assembly of claim 12 , wherein the locking hook is configured to rotate between a locked position and an unlocked position, and further wherein the locking hook abuts one of the first and second cams when the locking hook is in the locked position.

19. The vehicle seat latch assembly of claim 18 , wherein the locking hook is configured to retain a striker pin when in the locked position.

20. The vehicle seat latch assembly of claim 19 , wherein the striker pin is operably coupled to a plate disposed on a track assembly.

Assignees

• Ford Global Tech Llc

Inventors

• Kish Joseph Michael
• Aktas Macit
• Gabalski Jeffrey

Classifications

• B60N2002/967

  the locking system prevents tilt of whole seat by retaining and locking the seat in a vertical storage position · CPC title

• B60N2/1615

  Parallelogram-like structure · CPC title

• B60N2/12 Primary

  slidable and tiltable · CPC title

• B60N2/20

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

• B60N2/10

  tiltable (B60N2/12 {, B60N2/2875} take precedence) · CPC title