Storage of actuation energy in automotive door latch

• US 20050134053A1
• Filed: 12/23/2003
• Published: 06/23/2005
• Est. Priority Date: 12/23/2003
• Status: Abandoned Application

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Spurr, Nigel V., Johnson, Curtis B., Gibson, Hugh D., Murchie, Duncan S., Kilker, Daniel D., Vorwald, Scott A., Kettle, Adrian T., Vaidhyanathan, Ajaykumar, Bechtold, Kenneth V., Hayes, Richard T., Crawford, Alex, Eaton, William F., Maxwell, Abanni B., Shelley, Michael J., Shannon, Patrick H., Madden, Gillian J.
• Application Number:
  US10/745,388
• Publication Number:
  US 20050134053A1
• Time in Patent Office: Days
• US Class Current: 292/201
• CPC Class Codes: E05B 15/002 Energy storage by movement of wing
• CPC Class Codes: E05B 2047/0065 Saving energy E05B2047/0053, E05B2047/0074, E05B2047/0077, E05B2047/0079, E05B2047/0081 take precedence
• CPC Class Codes: E05B 81/06 using rotary motors
• CPC Class Codes: E05B 81/46 Clutches
• CPC Class Codes: Y10T 292/1082 Motor

Abstract

In general, a spring or spring mechanism can be associated with a latch mechanism wherein the spring is wound to a particular position thereof to store energy for dissipation and actuation of the latch mechanism. The latch mechanism is responsive to the spring, and can be actuated based on energy stored and dissipated from the spring. When required, spring energy can therefore be dissipated to actuated the latch or latch mechanism. Thus, a motor with low current consumption and suitable gearing can be utilized to apply a high force to the spring.

Claims

1. A latch actuation system, comprising:

a spring associated with a latch mechanism wherein said spring is wound to a particular position thereof to store energy for dissipation and actuation of said latch mechanism;

a latch mechanism responsive to said spring, wherein said latch mechanism and said spring are integrated with a door latch assembly, wherein said latch mechanism is actuated based on energy stored and dissipated from said spring within said door latch assembly, and

a gear mechanism for applying a high force to said spring to initiate a release of energy from said spring actuation of said latch mechanism, wherein said gear mechanism comprises a gear train.

2. The system of claim 1 further comprising a motor for applying a high force to said spring to initiate a release of energy from said spring for actuation of said latch mechanism.

5. The system of claim 2 wherein said motor comprises a low current consumption motor.

6. The system of claim 1 further comprising a motor associated with a gear mechanism responsive to said motor, wherein said motor and said gear mechanism together apply a high force to said spring to permit said spring to release stored energy thereof for actuating said latch mechanism.

7. The system of claim 1 wherein said latch mechanism comprises a vehicle door latch of an automotive vehicle.

8. The system of claim 1 wherein said spring comprises a gear train spring.

13. The system of claim 1 wherein said spring comprises a gear train spring.

3. (canceled)

4. (canceled)

9. A latch actuation system, comprising:

a spring associated with a latch mechanism wherein said spring is wound to a particular position thereof to store energy for dissipation and actuation of said latch mechanism;

a latch mechanism responsive to said spring, wherein said latch mechanism and said spring are integrated with a door latch assembly, wherein said latch mechanism is actuated based on energy stored and dissipated from said spring within said door latch assembly; and

a motor for applying a high force to said spring to initiate a release of energy from said spring for actuation of said latch mechanism.

10. The system of claim 9 wherein said motor comprises a low current consumption motor.

11. The system of claim 9 further comprising a gear mechanism responsive to said motor, wherein said motor and said gear mechanism together apply a high force to said spring to permit said spring to release stored energy thereof for actuating said latch mechanism.

12. The system of claim 9 wherein said latch mechanism comprises a vehicle door latch of an automotive vehicle.

14. A latch actuation method, comprising the steps of:

associating a spring with a latch mechanism wherein said spring is wound to a particular position thereof to store energy for dissipation and actuation of said latch mechanism;

configuring said latch mechanism wherein said latch mechanism is responsive to said spring;

integrating said latch mechanism and said spring within a door latch assembly, wherein said latch mechanism is actuated based on energy stored and dissipated from said spring within said door latch assembly, and

providing a motor for applying a high force to said spring to initiate a release of energy from said spring for actuation of said latch mechanism.

15. The method of claim 14 further comprising the step of providing a motor for applying a high force to said spring to initiate a release of energy from said spring for actuation of said latch mechanism.

16. The method of claim 14 further comprising the step of providing a gear mechanism for applying a high force to said spring to initiate a release of energy from said spring for actuation of said latch mechanism.

17. The method of claim 15 wherein said gear mechanism comprises a gear train.

18. The method of claim 15 wherein said motor comprises a low current consumption motor.

19. The method of claim 14 further comprising the step of providing a motor associated with a gear mechanism responsive to said motor, wherein said motor and said gear mechanism together apply a high force to said spring to permit said spring to release stored energy thereof for actuating said latch mechanism.

20. The method of claim 14 wherein said latch mechanism comprises a vehicle door latch of an automotive vehicle.