Components for active pedestrian safety mechanism

Patent metadata

Field	Value
Publication number	US-9637082-B2
Application number	US-201514878062-A
Country	US
Kind code	B2
Filing date	Oct 8, 2015
Priority date	Dec 6, 2011
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

A latch assembly for driving a closure panel from a closed panel position to an open panel position. The latch assembly comprises: a latch mechanism having a first latch element for retaining a mating latch component in a latched position and for moving the mating latch component from the latched position to an unlatched position when released, the movement of the first latch element biased towards the unlatched position by a latch biasing element; and an actuation system having: a mechanical energy storage system having a device for storing mechanical potential energy for assisting the latch biasing element in moving the mating latch component from the latched position to the unlatched position; a mechanical advantage system having a plurality of advantage elements for engaging the device, such that movement of the plurality of advantage elements is associated with a trigger force and cooperation of the plurality of advantage elements provides for amplification of the trigger force as an initiating force to release the stored mechanical potential energy; and a trigger system configured to provide the trigger force to release the stored mechanical potential energy.

First claim

We claim:

1. An actuation mechanism for releasing stored mechanical potential energy as an application force for acting on an adjacent object, the actuation mechanism comprising:
a mounting portion configured for mounting the actuation mechanism to a mounting surface associated with the adjacent object;
a mechanical energy storage system having a device configured for storing mechanical potential energy for displacing the adjacent object from, a first position to a second position, the release of the stored mechanical potential energy actuated by a trigger force; and
a trigger system configured to provide the trigger force to release the stored mechanical potential energy, the trigger system including a trigger biasing element and a retaining element, such that destruction of the retaining element provides for the trigger force as a result of the trigger biasing element moving from a first trigger position to a second trigger position, the trigger system further comprising a destructive element for damaging a structural integrity of the retaining element, such that said release is a result of a loss of tension in the retaining element due to a decrease in the structural integrity caused by said damaging.

2. The actuation mechanism of claim 1 , wherein the mounting port is a linkage member for connecting to the adjacent object, such that the application force is applied to the adjacent object via the linkage member.

3. The actuation mechanism of claim 2 , wherein the linkage member is a cable.

4. The actuation mechanism of claim 1 , wherein the mounting portion is configured to attach to the mounting surface of a latch, such that the adjacent object is one or more latch elements of the latch.

5. The actuation mechanism of claim 4 further comprising a mechanical advantage system having a plurality of advantage elements for engaging the device, such that movement of the plurality of advantage elements is associated with the trigger force and cooperation of the plurality of advantage elements during said movement provides for amplification of the trigger force as an initiating force to release the stored mechanical potential energy.

6. The actuation mechanism of claim 1 , wherein the mounting surface is on a frame of a hinge assembly and the adjacent object is a hinge coupled to a closure panel, such that application force is applied indirectly to the hinge via the frame.

7. The actuation mechanism of claim 1 , wherein the mounting surface is on a body of a vehicle having a closure panel.

8. The actuation mechanism of claim 7 , wherein the adjacent object is a panel operation component configured for operatively moving the closure panel between a closed position and an open position.

9. The actuation mechanism of claim 8 , wherein the panel operation component is a latch mechanism containing a first latch element for retaining a mating latch component of the closure panel in a latched position and for moving the mating latch component from the latched position to an unlatched position when released, the movement of the first latch element biased towards the unlatched position by a latch biasing element.

10. The actuation mechanism of claim 9 , wherein said displacing of the adjacent object from the first position to the second position is performed while retaining the mating latch component in the latched position.

11. The actuation mechanism of claim 7 , wherein the adjacent object is a material component of the closure panel.

12. The actuation mechanism of claim 11 , wherein the material component of the closure panel is a structural member as part of the closure panel.

13. The actuation mechanism of claim 1 , wherein the trigger biasing element is a coil spring.

14. The actuation mechanism of claim 1 , wherein the retaining element is a wire under tension.

15. The actuation mechanism of claim 14 , wherein the destructive element is configured to cause plastic deformation in one or more portions of the wire.

16. The actuation mechanism of claim 14 , wherein the destructive element is mechanically actuated and the plastic deformation is due to a mechanical impact by the destructive element to the one or mare portions of the wire.

17. The actuation mechanism of claim 14 , wherein the destructive element is electronically actuated and the plastic deformation is due application of a current to the one or more portions of the wire.

18. The actuation mechanism of claim 14 , wherein the destructive element is electronically actuated and includes a heating element positioned adjacent to the one or more portions of the wire, such that heating of the heating element causes a corresponding heating of the one or more portions of the wire.

19. The actuation mechanism of claim 1 , wherein the trigger system is a one-time use component and is replaceable for a subsequent activation of the mechanical energy storage system, such that the trigger system is releasably coupled to a trigger system interface of the actuation mechanism.

20. The actuation mechanism of claim 19 , wherein the mechanical energy storage system is configured as reusable by returning the device to the second position from the first position, such that the replacement of the trigger system provides for retaining of the device in the second position once returned.

21. The actuation mechanism of claim 1 , wherein the device is a weighted object.

22. The actuation mechanism of claim 1 , wherein the device is a biasing member.

23. The actuation mechanism of claim 22 , wherein the biasing member is a spring.

24. The actuation mechanism of claim 23 , wherein the spring is a coil spring.

25. The actuation mechanism claim 1 , wherein the destructive element is an explosive charge.

26. The actuation mechanism of claim 1 , wherein the destructive element is a chemical agent.

27. The actuation mechanism of claim 1 , wherein the trigger system is a one-time use component and is replaceable for a subsequent activation of the mechanical energy storage system.

28. The actuation mechanism of claim 27 , wherein the mechanical energy storage system is configured as reusable by returning the device to the first position from the second position, such that the replacement of the trigger system provides for retaining of the device in the first position once returned.

29. The actuation mechanism of claim 27 , wherein the replacement includes replacement of the trigger biasing element and the retaining element.

30. The actuation mechanism of claim 27 , wherein the replacement includes replacement of the retaining element with reuse of said trigger biasing element.

31. The actuation mechanism of claim 1 , wherein the object is a component of a vehicle and the mounting surface is either on a body of the vehicle or is on the object itself.

32. The actuation mechanism of claim 1 , wherein the trigger biasing element is a pneumatic device.

Assignees

• Magna Closures Inc

Inventors

• Ferri James J
• Mitchell John Robert Scott
• Szente Csaba
• Playia Jagdeep
• Ghorghorian Dikran
• Sabatini Gabriele Wayne
• Miu Traian
• Clark John

Classifications

• E05Y2900/536

  Hoods · CPC title

• E05F7/00

  Accessories for wings not provided for in other groups of this subclass (specially adapted for furniture A47B95/00; door-lifters B66F, E04F21/00; knobs or handles E05B) · CPC title

• E05B77/08

  Arrangements for protection of pedestrians · CPC title

• B62D25/12

  Parts or details thereof (locks E05B, {E05B83/16; devices for holding open E05C17/00, e.g. while carrying oversize objects E05C17/042}; hinges E05D; counterbalancing means E05F; {checks, stops, buffers E05F5/00; } springs, {e.g. pneumatic springs} F16F) · CPC title

• B62D25/10

  Bonnets or lids {, e.g. for trucks, tractors, busses, work vehicles (for truck beds B60J7/1607; for boats B63B19/12; doors arranged at the vehicle rear B60J5/10; inlet covers for vehicle fuel tanks B60K15/05; for protecting non-occupants of a vehicle B60R21/38)} · CPC title