Scissor mechanism for a latch assembly

• US 7,377,557 B2
• Filed: 12/06/2004
• Issued: 05/27/2008
• Est. Priority Date: 08/20/2004
• Status: Expired due to Fees

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Spurr, Nigel V., Shelley, Michael J.
• Primary Examiner(s): Lugo; Carlos
• Application Number:
  US11/006,244
• Publication Number:
  US 20060038407A1
• Time in Patent Office: 1,268 Days
• Field of Search: 292/1, 292/17, 292/32, 292/42, 292/137, 292/150, 292/163, 292/177, 292/180, 292/152, 292/302, 292/303, 292/DIG.61, 292/216, 292/201, 292/DIG.23, 267/53, 267/168, 267/275
• US Class Current: 292/1
• CPC Class Codes: E05B 15/04 Spring arrangements in locks E05B3/065, E05B15/101, E05B15/143, E05C19/06 take precedence
• CPC Class Codes: E05B 2015/0451 Folded springs
• CPC Class Codes: E05B 2015/0486 A single spring working on more than one element
• CPC Class Codes: E05B 83/36 Locks for passenger or like doors
• CPC Class Codes: F16F 1/025 characterised by having a particular shape F16F1/04, F16F1/14, F16F1/18, F16F1/32, F16F1/34 take precedence
• CPC Class Codes: Y10S 292/61 Spring devices
• CPC Class Codes: Y10T 292/03 Miscellaneous

Abstract

A scissor apparatus for a latch assembly, which includes a spring comprising a plurality of fingers for controlling the motion one or more sliders associated with the latch assembly, and wherein the spring comprises a spring control independent of the actuation of such sliders. The fingers are generally integrated with the spring. Such a one-piece spring can be implemented as a stamped component with 2-off, 3-off or 6-off fingers to control the motion of the sliders. The stamped spring can clip onto existing latch assembly components in order to promote retention, and overcome friction with the latch assembly and return the sliders to a neutral position thereof.

Claims

1. A system comprising:

a latch assembly;

a plurality of latch activation sliders disposed within said latch assembly wherein said plurality of latch activation sliders slide parallel to one another;

a non-helical spring comprising a plurality of fingers, wherein at least one latch activation slider of said plurality of latch activation sliders acts against at least one finger of said plurality of fingers and wherein a return arm of each slider of said plurality of latch activation sliders travels between said plurality of fingers of said non-helical spring thereof.

2. The system of claim 1 wherein said non-helical spring comprises a single-component clip spring.

3. The system of claim 1 wherein said at least one finger of said plurality of fingers provides a force to return said at least one latch activation slider to a neutral position.

4. The system of claim 1 wherein said non-helical spring comprises a one-piece non-helical spring.

5. The system of claim 1 wherein said plurality of latch activation sliders provide independent activation.

6. The system of claim 1 wherein said non-helical spring is attached to said latch assembly by a retention clip on said non-helical spring.

7. The system of claim 2 wherein said plurality of fingers comprises two fingers.

8. A system comprising:

a vehicle latch assembly;

a plurality of latch activation sliders disposed within said latch assembly wherein said plurality of latch activation sliders slide parallel to each other;

a non-helical clip spring comprising a plurality of fingers, wherein at least one latch activation slider of said plurality of latch activation sliders acts against at least one finger of said plurality of fingers and said at least one finger of said plurality of fingers provides a force to return said at least one latch activation slider to a neutral position and wherein a return arm of each slider of said plurality of latch activation sliders travels between said plurality of fingers of said non-helical clip spring thereof.

9. The system of claim 8 wherein said plurality of latch activation sliders are activated by electrical activation.

10. The system of claim 9 wherein said non-helical spring comprises a one-piece non-helical spring.

11. The system of claim 10 wherein said plurality of latch activation sliders provide independent activation.

12. The system of claim 11 wherein said non-helical spring is attached to said latch assembly by a retention clip on said non-helical clip spring.

13. The system of claim 12 wherein said plurality of fingers comprises two fingers.

14. A method comprising:

providing a vehicle latch assembly;

providing a plurality of latch activation sliders disposed within said latch assembly wherein said plurality of latch activation sliders slide parallel to each other;

clipping a non-helical spring comprising a plurality of fingers to said vehicle latch assembly, wherein at least one latch activation slider of said plurality of latch activation sliders acts against at least one finger of said plurality of fingers;

providing a force to return said at least one latch activation slider to a neutral position by said at least one finger of said plurality of fingers; and

disposing a return arm of each slider of said plurality of latch activation sliders wherein said arm travels between said plurality of fingers of said non-helical spring thereof.

15. The method of claim 14 wherein said non-helical spring comprises a single component clip spring.

16. The method of claim 14 further comprising the step of activating said plurality of latch activation sliders electrically.

17. The method of claim 16 wherein said non-helical spring comprises a one-piece non-helical spring.

18. The method of claim 17 wherein said plurality of latch activation sliders provide independent activation.

19. The method of claim 18 wherein said plurality of fingers comprises two fingers.