Latch assembly for vehicles

• US 4,756,562 A
• Filed: 11/26/1986
• Issued: 07/12/1988
• Est. Priority Date: 11/26/1986
• Status: Expired due to Term

• Current Assignee: Dennis S. Kelly, Ryerson & Haynes, Inc.
• Original Assignee: Ryerson & Haynes, Inc.
• Inventors: Riley, Dale W., Foster, Raymond E., Kraft, Lynwood C., Holwerda, Andrew J.
• Primary Examiner(s): MOORE, RICHARD
• Application Number:
  US06/935,502
• Time in Patent Office: 594 Days
• Field of Search: 292/DIG. 14, 292/DIG. 53, 292/336.3, 292/29, 292/50, 292/28
• US Class Current: 292/28
• CPC Class Codes: E05B 83/24 for car bonnets
• CPC Class Codes: Y10S 292/14 Hood latches
• CPC Class Codes: Y10S 292/53 Mounting and attachment
• CPC Class Codes: Y10T 292/083 Flexible

Abstract

A latch assembly for vehicles is disclosed for securing engine hoods, trunk lids, or other pivotal members to fixed portions of a vehicle. The assembly includes a primary latch preferably releasable from a remote position within the vehicle, and a secondary latch to hold the pivotal member only partially open after release of the primary latch. A secondary latch release handle is mounted for automatic movement into the gap between the partially opened pivotal member and the fixed vehicle portion for easy, convenient access outside the pivotal member to release the secondary latch to fully open the pivotal member. A safety retaining arm is included to hold the pivotal member partially closed even if the fasteners for the latch assembly loosen or fail.

Claims

1. In a vehicle having a pivotal member movably mounted on a fixed portion of the vehicle, the pivotal member being movable between open and closed positions and defining a gap between an edge of the pivotal member and the fixed vehicle portion when the pivotal member is in an open position, an improved latch assembly for securing the pivotal member to the fixed vehicle portion comprising:

primary latch means adapted for mounting on one of the pivotal member and fixed vehicle portion and movable between a latched position for retaining a striker member on the other of the pivotal member and fixed vehicle portion and an unlatched position for releasing the striker member;

secondary latch means adapted for mounting on one of the pivotal member and fixed vehicle portion and movable between a latched position for holding said pivotal member partially opened when said primary latch means is unlatched and released and an unlatched position allowing the pivotal member to be fully opened;

movable handle means for moving said secondary latch means betwen said latched and unlatched positions;

mounting means for mounting said movable handle means on the same pivotal member or fixed vehicle portion on which said secondary latch means is mounted and moving said handle means from a first position withdrawn from the gap between the pivotal member and the fixed vehicle portion into a second position in the gap when said primary latch means is unlatched and released whereby said handle means is positioned for easy access in the gap to move said secondary latch means to said unlatched position to fully open the pivotal member after said primary latch means is released.

2. The assembly of claim 1 wherein said mounting means include means for pivotally mounting said movable handle for swinging, pivotal movement into the gap in a plane generally parallel to an edge of the pivotal member or fixed vehicle portion on which said movable handle means is mounted.

3. The assembly of claim 1 wherein said means for moving said movable handle means include biasing means for biasing said handle means from its first to its second position.

4. The assembly of claim 3 including spring means for biasing the pivotal member of the vehicle toward an open position.

5. The assembly of claim 3 wherein said primary latch means include a primary latch member movably mounted on one of the pivotal member and fixed vehicle portion and releasable means for moving said primary latch member between said latched and unlatched positions.

6. The assembly of claim 5 including a mounting plate;

said mounting plate including a recess for receiving the striker member;

said primary latch member having a keeper surface;

means for pivotally mounting said primary latch member on said mounting plate adjacent said recess for pivotal movement between a latched position in which said keeper surface extends across said recess to retain the striker member in said recess and an unlatched position in which said keeper surface is moved away from said recess to release the striker member;

said releasable means including a latch pawl pivotally mounted on said mounting plate for engaging and holding said primary latch member in said latched position and biasing means for biasing said primary latch member toward its unlatched position.

7. The assembly of claim 6 wherein said biasing means include a spring connected between said latch pawl and said primary latch member;

said releasable means further including a release lever pivotally mounted on said mounting plate for moving said latch pawl to move said primary latch member to said unlatched position and second biasing means for biasing said release lever into position for holding said primary latch member in its latched position.

8. The assembly of claim 7 wherein said second biasing means include a spring connected between said release lever and said mounting plate;

and cable means for pivoting said release lever to move said latch pawl and release said primary latch member from a remote location.

9. The assembly of claim 6 wherein said primary latch member also includes a return flange for engaging the striker member to return the primary latch member to said latched position;

said latch pawl including surface means for engaging said return flange to hold said primary latch member in latched position.

10. The assembly of claim 5 wherein said primary latch member and releasable means are mounted on one of the pivotal member and fixed vehicle portion;

said secondary latch means being mounted on the other of the pivotal member and fixed vehicle portion;

said assembly also including spring means for biasing the pivotal member on the vehicle toward an open position.

11. The assembly of claim 10 including a first mounting plate having a striker member and said secondary latch means mounted thereon and first fastening means for securing said first mounting plate to the other of the pivotal member and fixed vehicle portion;

and a second mounting plate having an opening for receiving said striker member therein and second fastening means for securing said second mounting plate to the one of the pivotal member and fixed vehicle portion;

said primary latch member being movably mounted adjacent said opening on said second mounting plate for movement into said opening to engage and hold said striker member in said latched position.

12. The assembly of claim 11 wherein said striker member is a stud extending outwardly from said first mounting plate and having an enlarged head at its free end;

said second mounting plate including a socket defining said opening and receiving said stud and enlarged head when the pivotal member is closed and said primary latch means is in its latched position;

said primary latch member including a release lever pivotally mounted adjacent said socket;

said socket including an opening extending through one side through which said release lever pivotally moves to engage said stud and enlarged head to retain said stud in said socket.

13. The assembly of claim 12 wherein said spring means is a coil spring mounted concentrically with said stud and extending beyond said enlarged head in its uncompressed state;

said releasable means including additional biasing means for biasing said release lever into said opening in said socket and means for pivoting said release lever out of said opening against the biasing force of said additional biasing means.

14. The assembly of claim 13 including a cup telescoped over and slidable along said stud, said coil spring engaging and biasing said cup over and against said enlarged head when uncompressed.

15. The assembly of claim 4 including a mounting plate;

said secondary latch means including a secondary latch arm with a recess for receiving a keeper member on the vehicle, pivot means for pivotally mounting said secondary latch arm on said mounting plate for movement between latched and unlatched positions, and additional biasing means for biasing said secondary latch arm into said latched position.

16. The assembly of claim 15 wherein said secondary latch arm is J-shaped;

said pivot means engaging said secondary latch arm near the top of said J;

said additional biasing means including a spring mounted on said pivot means and engaging said secondary latch arm at a position spaced from said pivot means.

17. The assembly of claim 15 including fastening means for securing said mounting plate to one of the pivotal member and fixed vehicle portion;

and safety retaining means on said assembly for engaging a portion of the pivotal member or fixed vehicle portion to which said assembly is secured when said fastening means are loose or released whereby said pivotal member will be maintained at least partially closed even if said fastening means are loose or accidentally fail.

18. The assembly of claim 17 wherein said safety retaining means include a safety arm extending from said secondary latch arm and adapted to be positioned behind a portion of the pivot member or fixed vehicle portion to which said secondary latch means is mounted.

19. The assembly of claim 15 wherein said movable handle means and mounting means for said movable handle means are spaced from said secondary latch means on said mounting plate;

said movable handle means including connecting means for engaging said secondary latch means for moving said secondary latch means with said movable handle means.

20. The assembly of claim 19 wherein said movable handle means include a pivotable handle;

said mounting means including handle pivot means for pivotally mounting said handle on said mounting plate;

said connecting means including a link pivotally connected to said handle and said secondary latch means.

21. The assembly of claim 20 wherein said connecting means further include a latch lever and means for pivotally mounting said latch lever on said secondary latch arm for movement between first and second positions on said latch arm;

said link being pivotally secured to said latch lever.

22. The assembly of claim 21 wherein said biasing means for biasing said handle include a spring mounted on said handle pivot means and engaging said handle at a position spaced from said handle pivot means;

said latch lever including stop means for limiting movement between said two positions;

said spring moving said handle to said second position and simultaneously moving said link and said latch lever to its second position when said primary latch means is released and said latch lever is moved out of engagement with the keeper member on the vehicle, said latch lever and latch arm being further pivotable in unison to said unlatched position when said handle is pivoted beyond said second position.

23. The assembly of claim 4 wherein said mounting means further include lost motion means for moving said movable handle means to said second position without moving said secondary latch means to its unlatched position;

said movable handle means being movable beyond said second position to move said secondary latch means to said unlatched position.

24. The assembly of claim 4 wherein said primary latch means, secondary latch handle means, mounting means and spring means are assembled on a single mounting plate;

said mounting plate also including fastening means for securing said mounting plate to one of the pivotal member and fixed vehicle portion.

25. The assembly of claim 1 wherein said assembly is mounted on an engine hood of a vehicle.

26. In a vehicle having a pivotal member movably mounted on a fixed portion of the vehicle, an improved latch assembly for securing the pivotal member to the fixed vehicle portion, the pivotal member being movable between open and closed positions, the vehicle being of the type having a striker member and a secondary keeper member secured to one of the fixed portion and pivotal member and adapted to engage said latch assembly, said improved latch assembly being secured to the other of the fixed portion and pivotal member and comprising:

mounting plate means for securing said assembly to the vehicle;

primary latch means on said mounting plate means and movable between a latched position for engaging and retaining the striker member to hold the pivotal member in its closed position and an unlatched position in which the striker member is released;

secondary latch means on said mounting plate means and movable between a latched position for engaging the secondary keeper member and holding the pivotal member in a partially opened position after said primary latch member is released and an unlatched position in which said secondary keeper member is not engaged thereby, the pivotal member defining a gap with the fixed vehicle portion when the pivotal member is partially opened;

swing-out handle means on said mounting plate means for moving said secondary latch means between said latched and unlatched positions;

securing means for movably mounting said swing-out handle means on said mounting plate means for movement between three positions including a first nonaccessible position in which said handle means is withdrawn from the gap when the pivotal member is closed, a second accessible position in which said handle means is extended into the gap after said primary latch means is released, and a third position in which said handle means is further extended into the gap beyond said second accessible position and in which said secondary latch means is unlatched to allow the pivotal member to fully open;

biasing means for biasing said handle means into said second accessible position when said primary latch means is released.

27. The latch assembly of claim 26 wherein said primary means include a primary latch member movably mounted on said mounting plate means and releasable means for moving said primary latch member between said latched and unlatched positions.

28. The assembly of claim 27 wherein said releasable means include a latch pawl and a release lever each pivotally mounted on said mounting plate means, additional biasing means for biasing said latch pawl and release lever toward said primary latch member to hold said primary latch member in latched position, and cable means for pivoting said release lever and latch pawl to move said primary latch member to its unlatched position.

29. The assembly of claim 26 wherein said secondary latch means includes a secondary latch arm on said mounting plate means, said secondary latch arm having a recess for receiving the secondary keeper member, pivot means for pivotally mounting said secondary latch arm on said mounting plate means for movement between latched and unlatched positions, and additional biasing means for biasing said secondary latch arm into said latched position.

30. The assembly of claim 29 including fastening means for securing said mounting plate means to one, of the pivotal member and fixed vehicle portion;

and safety retaining means on said assembly for engaging a portion of the pivotal member or fixed vehicle portion to which said assembly is secured when said fastening means are loose or released whereby said pivotal member will be maintained at least partially closed even if said fastening means are loose or accidentally fail.

31. The assembly of claim 29 wherein said swing-out handle means and securing means for said swing-out handle means are spaced from said secondary latch means on said mounting plate means;

said swing-out handle means including connecting means for engaging said secondary latch means for moving said secondary latch means with said swing-out handle means.

32. The assembly of claim 31 including lost motion means between said swing-out handle means and secondary latch means for moving said swing-out handle means to said second accessible position without moving said secondary latch means to its unlatched position.

33. The assembly of claim 26 including lost motion means between said swing-out handle means and secondary latch means for moving said swing-out handle means to said second accessible position without moving said secondary latch means to its unlatched position.

34. The assembly of claim 26 wherein said mounting plate means also includes spring means for biasing the pivotal member of the vehicle toward an open position and fastening means for securing said mounting plate means to one of the pivotal member and fixed vehicle portion.

35. In a vehicle having a pivotal member movably mounted on a fixed portion of the vehicle, an improved latch assembly for securing the pivotal member to the fixed vehicle portion, the pivotal member being movable between open and closed positions, the vehicle being of the type having a striker member and a secondary keeper member adapted to engage portions of said latch assembly, said improved latch assembly comprising:

primary latch means on one of the pivotal member and fixed vehicle portion and movable between a latched position for engaging and retaining the striker member to hold the pivotal member in its closed position and an unlatched position in which the striker member is released, the striker member being on the other of the pivotal member and fixed vehicle portion;

secondary latch means on one of the pivotal member and fixed vehicle portion and movable between a latched position for engaging the secondary keeper member and holding the pivotal member in a partially opened position after said primary latch member is released and an unlatched position in which said secondary keeper member is not engaged thereby, the pivotal member defining a gap with the fixed vehicle portion when the pivotal member is partially opened;

spring means for biasing the pivotal member of the vehicle toward an open position;

swing-out handle means on the one of the pivotal member and fixed vehicle portion to which said secondary latch means is mounted for moving said secondary latch means between said latched and unlatched positions;

securing means for movably mounting said swing-out handle means on the one pivotal member and fixed vehicle portion for movement between three positions including a first nonaccessible position in which said handle means is withdrawn from the gap when the pivotal member is closed, a second accessible position in which said handle means is extended into the gap after said primary latch means is released, and a third position in which said handle means is further extended into the gap beyond said second accessible position and in which said secondary latch means is unlatched to allow the pivotal member to fully open;

biasing means for biasing said handle means into said second accessible position when said primary latch means is released.

36. The assembly of claim 35 including a first mounting plate having a striker member and said secondary latch means mounted thereon and first fastening means for securing said first mounting plate to one of the pivotal member and fixed vehicle portion;

and a second mounting plate having an opening for receiving said striker member therein and second fastening means for securing said second mounting plate to the other of the pivotal member and fixed vehicle portion;

said primary latch means including a primary latch member and releasable means for moving said primary latch member between said latched and unlatched positions;

said primary latch member being movably mounted adjacent said opening on said second mounting plate for movement into said opening to engage and hold said striker member in said latched position.

37. The assembly of claim 36 wherein said striker member is a stud extending outwardly from said first mounting plate and having an enlarged head at its free end;

said second mounting plate including a socket defining said opening and receiving said stud and enlarged head when the pivotal member is closed and said primary latch means is in its latched position;

said primary latch member including a release lever pivotally mounted adjacent said socket;

said socket including an opening extending through one side through which said release lever pivotally moves to engage said stud and enlarged head to retain said stud in said socket.

38. The assembly of claim 37 wherein said spring means is a coil spring mounted concentrically with said stud and extending beyond said enlarged head in its uncompressed state;

said releasable means including additional biasing means for biasing said release lever into said opening in said socket and means for pivoting said release lever out of said opening against the biasing force of said additional biasing means.

39. The assembly of claim 35 including a first mounting plate;

said secondary latch means including a secondary latch arm having a recess for receiving the secondary keeper member, pivot means for pivotally mounting said secondary latch arm on said first mounting plate for movement between latched and unlatched positions, and additional biasing means for biasing said secondary latch arm into said latched position.

40. The assembly of claim 39 wherein said swing-out handle means and securing means for said swing-out handle means are spaced from said secondary latch means on said first mounting plate;

said swing-out handle means including connecting means for engaging said secondary latch means for moving said secondary latch means with said swing-out handle means.

41. The assembly of claim 35 including lost motion means between said swing-out handle means and secondary latch means for moving said swing-out handle means to said second accessible position without moving said secondary latch means to its unlatched position.

42. The assembly of claim 35 including fastening means for securing said secondary latch means to one of the pivotal member or fixed vehicle portion;

and safety retaining means on said secondary latch means for engaging a portion of the pivotal member or fixed vehicle portion to which said secondary latch means is mounted when said fastening means are loose or released whereby said pivotal member will be maintained at least partially closed even if said fastening means are loose or accidentally fail.

43. In a vehicle having a pivotal member movably mounted on a fixed portion of the vehicle and movable between open and closed positions, the vehicle including a striker member secured to one of the fixed portion and pivotal member on the vehicle, an improved latch assembly for vehicles for releasably securing the pivotal member to the fixed vehicle portion, said latch assembly comprising:

primary latch means on one of the pivotal member and fixed vehicle portion for engaging and releasably holding the striker member on the vehicle to releasably hold the pivotal member in closed position;

a mounting plate and fastening means for securing said mounting to one of the pivotal member and fixed vehicle portion;

safety retaining means on said mounting plate for engaging a portion of the pivotal member or fixed vehicle portion to which mounting plate is secured when said fastening means are loose or released whereby said pivotal member will be maintained at least partially closed even if said fastening means are loose or accidentally fail, said safety retaining means including arm means positioned behind a portion of said one of the pivotal member and fixed vehicle portion to which said mounting plate is secured.

44. The assembly of claim 43 wherein the vehicle also includes a keeper member secured to one of the fixed portion and pivotal member of the vehicle;

a secondary latch means secured to one of the pivotal member and fixed vehicle portion for engaging and releasably holding the keeper member on the vehicle to releasably hold the pivotal member in partially opened position after said primary latch means has been released.

45. The assembly of claim 44 wherein said arm means include a safety arm extending from said secondary latch means.

46. The assembly of claim 44 wherein said primary latch means include a primary latch member movably mounted on the one pivotal member or fixed vehicle portion and releasable means for moving said primary latch member between said latched and unlatched positions.

47. The assembly of claim 46 wherein said secondary latch means includes a secondary latch arm on said mounting plate;

said secondary latch arm having a recess for receiving the keeper member, pivotal means for pivotally mounting said secondary latch arm on the mounting plate for movement between latched and unlatched positions, and additional biasing means for biasing said secondary latch arm into said latched position.

48. The assembly of claim 47 including a swing-out handle and securing means for securing said swing-out handle on said mounting plate at a position spaced from said secondary latch means;

said swing-out handle including connecting means for engaging said secondary latch arm for moving said secondary latch arm with said swing-out handle.

49. The assembly of claim 48 including lost motion means between said swing-out handle and secondary latch arm for moving said swing-out handle to an accessible position without moving said secondary latch arm to its unlatched position

50. The assembly of claim 49 wherein said mounting plate also includes spring means for biasing the pivotal member of the vehicle toward an open position and fastening means for securing said mounting plate to one of the pivotal member and fixed vehicle portion.

51. In a vehicle having a pivotal member movably mounted on a fixed portion of the vehicle and movable between open and closed positions, the vehicle including a striker member and a keeper member secured to one of the fixed portion and pivotal member on the vehicle, an improved latch assembly for vehicles for releasably securing the pivotal member to the fixed vehicle portion, said assembly comprising:

a mounting plate secured to one of the pivotal member and fixed vehicle portion;

primary latch means on said mounting plate for engaging and releasably holding the striker member on the vehicle to releasably hold the pivotal member in closed position;

secondary latch means on said mounting plate for engaging and releasably holding the keeper on the vehicle to releasably hold the pivotal member in partially open position after said primary latch means has been released;

spring means on said mounting plate for biasing the pivotal member toward its open position;

release means on said mounting plate for releasing said primary and secondary latch means to open the pivotal member;

fastening means for securing said mounting plate to said one of the pivotal member and fixed vehicle portion; and

safety retaining means on said assembly for engaging a portion of said one of the pivotal member or fixed vehicle portion to which said assembly is secured when said fastening means are loose or released such that said pivotal member will be maintained at least partially closed even if said fastening means are loose or accidentally fail;

whereby said assembly is mounted to the vehicle as a single unit with said primary secondary latch means, release means, spring means and safety retaining means all assemblyed on one mounting plate for simplified installation and repair.

52. The assembly of claim 51 wherein said release means includes movable handle means for said secondary latch means between said latched and unlatched positions and lever means for releasing said primary latch means.

53. In a vehicle having a pivotal member movably mounted on a fixed portion of the vehicle and movable between open and closed positions, the pivotal member defining a gap with the fixed vehicle portion when the pivotal member is partially opened, the vehicle including a striker member and a keeper member secured to one of the fixed portion and pivotal member on the vehicle, an improved latch assembly for vehicles for releasably securing the pivotal member to the fixed vehicle portion, said latch assembly comprising:

a mounting plate secured to one of the pivotal member and fixed vehicle portion;

primary latch means on said mounting plate for engaging and releasably holding the striker member on the vehicle to releasably hold the pivotal member in closed position;

secondary latch means on said mounting plate for engaging and releasably holding the keeper on the vehicle to releasably hold the pivotal member in partially opened position after said primary latch means has been released;

spring means on said mounting plate for biasing the pivotal member toward its open position;

release means on said mounting plate for releasing said primary and secondary latch means to open the pivotal member;

said release means including movable handle means for moving said secondary latch means between said latched and unlatched positions and lever means for releasing said primary latch means;

securing means for movably mounting said movable handle means on said mounting plate for movement between three positions including a first nonaccessible position in which said handle means is withdrawn from the gap when the pivotal member is closed, a second accessible position in which said handle means is extended into the gap after said primary latch means is released, and a third position in which said handle means is further extended into the gap beyond said second accessible positin and in which said secondary latch means is unlatched to allow the pivotal member to fully open;

biasing means for biasing said handle means into said second accessible position when said primary latch means is released; and

fastening means for securing said mounting plate to one of the pivotal member and fixed vehicle portion whereby said assembly is mounted to the vehicle as a single unit with said primary and secondary latch means, release means and spring means all assembled on one mounting plate for simplified installation and repair.