Vehicle tailgate with supplemental tailgate having latching mechanism

• US 6,983,972 B2
• Filed: 10/21/2004
• Issued: 01/10/2006
• Est. Priority Date: 10/29/2003
• Status: Active Grant

• Current Assignee: Ford Global Technologies, LLC (Ford Motor Company), Multimatic Incorporated
• Original Assignee: Ford Global Technologies, LLC (Ford Motor Company), Multimatic Incorporated
• Inventors: Tan, Kian-Huat, Gruber, Herbert
• Primary Examiner(s): Pape, Joseph D.
• Application Number:
  US10/970,167
• Publication Number:
  US 20050110293A1
• Time in Patent Office: 446 Days
• Field of Search: 296/57.1, 296/26.08, 296/26.09, 296/26.1, 296/26.11, 224/402, 224/403, 224/405
• US Class Current: 296/57.1
• CPC Class Codes: B60P 3/40 for carrying long loads, e.g. with separate wheeled load supporting elements E04G21/14 takes precedence; signal devices to be attached to overhanging load B60Q7/02
• CPC Class Codes: B60R 3/02 Retractable steps or ladders, e.g. movable under shock B60R3/005 takes precedence
• CPC Class Codes: B62D 33/0273 Movable tailboards for vehicles comprising non-movable sideboards, e.g. pick-up trucks B62D33/037 takes precedence
• CPC Class Codes: B62D 33/03 by swinging down B62D33/0273 takes precedence
• CPC Class Codes: B62D 33/037 Latching means therefor

Abstract

A tailgate for a vehicle has a supplemental tailgate that retracts within the tailgate and is extendable therefrom in order to provide multiple assist functions. The supplemental tailgate includes a generally fixed guide portion and a movable frame assembly. The movable frame assembly includes a pivotable molding, which mounts on a cross member, and a latching assembly that mounts generally within telescoping supports, which selectively slide within the guide portion. When pivoted, the pivotable molding releases the latching assembly, allowing the movable portion of the supplemental tailgate to be moved to various extended positions. When the supplemental tailgate is in its stowed position, the pivotable molding is aligned with the top surface of the tailgate in order to provide an esthetically pleasing appearance and provide paint scratch resistance. When the movable frame portion is in an essentially fully extended position, it can be rotated relative to the tailgate in order to provide certain of the assist functions.

Claims

1. A tailgate assembly for use with a motor vehicle having a pair of spaced, generally vertical side walls and a generally horizontal bed extending therebetween, the tailgate assembly comprising:

a tailgate frame defining a generally hollow cavity and adapted to pivotally mount generally between the side walls and being operable in a generally horizontal open position and a generally vertical closed position; and

a supplemental tailgate including a first and a second guide tube secured generally within the hollow cavity, and with the first guide tube including a latch device; and

a movable frame assembly having a first and a second telescoping support, with the first telescoping support telescopically extendable from and retained by the first guide tube and the second telescoping support telescopically extendable from and retained by the second guide tube, a cross member connected to the first and second telescoping supports and extending therebetween, a release lever mounted on the cross member, and a latching assembly mounted within the first telescoping support and operatively connected to the release lever and to the latch device.

2. The tailgate assembly of claim 1 wherein the second guide tube includes a second latch device and the movable frame assembly includes a second latching assembly mounted within the second telescoping support and operatively connected to the release lever and to the second latch device.

3. The tailgate assembly of claim 2 wherein the latching assembly includes a latch housing that is slidable within the first telescoping support and is actuable by the release lever, and a latch blade that is selectively disengagable with the latch device and cooperates with the latch housing to disengage from the latch device when the latch housing is actuated by the release lever;

and the second latching assembly includes a second latch housing that is slidable within the second telescoping support and is actuable by the release lever, and a second latch blade that is selectively disengagable with the second latch device and cooperates with the second latch housing to disengage from the second latch device when the second latch housing is actuated by the release lever.

4. The tailgate assembly of claim 3 wherein the movable frame assembly includes a pivot pin, mounted to the first telescoping support, a latch return spring, mounted to the pivot pin and the latch housing such that the latch housing is biased against actuation by the release lever, a second pivot pin, mounted to the second telescoping support, and a second latch return spring, mounted to the second pivot pin and the second latch housing such that the second latch housing is biased against actuation by the release lever.

5. The tailgate assembly of claim 2 wherein the release lever is a pivotable molding that includes two spaced release devices and two actuation members, and the cross member includes two spaced pivot mounts that each operatively engage a respective one of the release devices such that the pivotable molding is pivotable relative to the cross member, and the two actuation members each cooperate with a respective one of the latch housings to actuate the latch housings when the pivotable molding is pivoted relative to the cross member.

6. The tailgate assembly of claim 2 wherein the movable frame assembly further includes two pivot brackets, each having a pivot slot, with one of each of the pivot brackets mounted on a respective one of the first and second guide tubes;

and two pivot pins, one each secured to a respective one of the first and second telescoping supports, whereby when the telescoping supports are essentially fully removed from the respective first and second guide tubes, the pivot pins will engage with the pivot slots to secure the first and second telescoping supports to the respective first and second guide tubes while allowing the first and second telescoping supports to pivot relative to the first and second guide tubes.

7. The tailgate assembly of claim 1 wherein the latching assembly includes a latch housing that is slidable within the first telescoping support and is actuable by the release lever, and a latch blade that is selectively disengagable with the latch device and cooperates with the latch housing to disengage from the latch device when the latch housing is actuated by the release lever.

8. The tailgate assembly of claim 7 wherein the latching assembly includes a latch blade spring that cooperates with the latch blade to bias the latch blade into engagement with the latch device.

9. The tailgate assembly of claim 7 wherein the latch device is at least one detent in said first guide tube, and the latch blade includes a retention tab that is selectively engagable with the at least one detent.

10. The tailgate assembly of claim 1 wherein the movable frame assembly includes a pivot pin, mounted to the first telescoping support, and a latch return spring, mounted to the pivot pin and the latch housing such that the latch housing is biased against actuation by the release lever.

11. The tailgate assembly of claim 1 wherein the release lever is a pivotable molding that includes a release device and an actuation member, and the cross member includes a pivot mount that operatively engages the release device such that the pivotable molding is pivotable relative to the cross member, and the actuation member cooperates with the latch housing to actuate the latch housing when the pivotable molding is pivoted relative to the cross member.

12. The tailgate assembly of claim 1 wherein the movable frame assembly further includes a first and a second pivot bracket, with the first pivot bracket mounted on the first guide tube and the second pivot bracket mounted on the second guide tube;

and a first pair of guide blocks mounted to the first pivot bracket and in surface contact with the first telescoping support to thereby position the first telescoping support relative to the first guide tube, and a second pair of guide blocks mounted to the second pivot bracket and in surface contact with the second telescoping support to thereby position the second telescoping support relative to the second guide tube.

13. The tailgate assembly of claim 1 wherein the movable frame assembly further includes a first and a second linear guide, with the first linear guide mounted to the first telescoping support within and in surface contact with the first guide tube to thereby position the first telescoping support relative to the first guide tube, and with the second linear guide mounted to the second telescoping support within and in surface contact with the second guide tube to thereby position the second telescoping support relative to the second guide tube.

14. The tailgate assembly of claim 1 wherein the movable frame assembly further includes a first and a second roller guide, with the first roller guide mounted to the first telescoping support within and in surface contact with the first guide tube to thereby position the first telescoping support relative to the first guide tube, and with the second roller guide mounted to the second telescoping support within and in surface contact with the second guide tube to thereby position the second telescoping support relative to the second guide tube.

15. The tailgate assembly of claim 14 wherein the first roller guide includes a lower roller guide in sliding surface contact with the first guide tube, an upper roller guide mounted on the lower roller guide and in surface contact with the first guide tube, and a roller rotatably mounted to the lower roller guide and in rolling surface contact with the first guide tube.

16. A tailgate assembly for use with a motor vehicle having a pair of spaced, generally vertical side walls and a generally horizontal bed extending therebetween, the tailgate assembly comprising:

a tailgate frame defining a generally hollow cavity therein adapted to pivotally mount transversely generally between said side walls and being movable into a generally horizontal open position;

a supplemental tailgate extendable from said tailgate frame and including a movable frame assembly supported from said tailgate frame, said movable frame assembly having a cross member oriented generally transversely; and

a latch mechanism operably associated with said movable frame assembly to restrain extension movement of said movable frame assembly relative to said tailgate frame, said latch mechanism being operated through an actuation lever supported on said movable frame.

17. The tailgate assembly of claim 16 wherein said movable frame assembly is mounted for pivotal movement relative to said tailgate frame.

18. The tailgate assembly of claim 17 wherein said movable frame assembly includes a pivotable molding located along a peripheral edge of said movable frame assembly, said actuation lever being formed into said pivotable molding.

19. The tailgate assembly of claim 18 wherein said supplemental tailgate further includes a guide apparatus supporting said movable frame assembly for affecting said extension movement thereof from said tailgate assembly, said guide apparatus being mounted in said tailgate frame with said movable frame assembly being telescopic therefrom.

20. The tailgate assembly of claim 19 wherein said guide apparatus includes a pair of transversely spaced guide tubes, said movable frame assembly including a pair of supports telescopically received within corresponding said guide tubes, said cross member extending transversely between said supports.

21. The tailgate assembly of claim 19 wherein said guide apparatus includes a pivot bracket positioned to receive a pivot pin mounted on said movable frame assembly when said movable frame assembly has been extended to a pivot position, said pivot bracket enabling said movable frame assembly to pivot downwardly relative to said tailgate frame such that said cross member is located below said tailgate frame to serve as a step for accessing said bed, and to pivot upwardly relative to said tailgate frame such that said cross member is located above said tailgate frame.

22. The tailgate assembly of claim 21 further comprising lock members extending between said cross member and said side walls to restrain said movable frame assembly in said upwardly pivoted position with said cross member located above said tailgate frame.

23. In a pick-up truck having a pair of spaced, generally vertical side walls;

a generally horizontal bed extending between said side walls;

a tailgate assembly pivotally mounted for movement relative to said bed between an upright closed position and a generally horizontal open position, said tailgate assembly including a tailgate frame and a tailgate latch apparatus cooperable with said side walls to releasably attach said tailgate assembly to said side walls into a closed position, the improvement comprising;

a movable frame assembly supported from said tailgate frame for extendable movement relative to said tailgate frame between a retracted position and an outwardly extended position, said movable frame assembly having a cross member oriented generally transversely and being generally aligned with a peripheral edge of said tailgate frame when in said retracted position and spaced outwardly away from said peripheral edge when in said extended position; and

a latch mechanism operatively associated with said movable frame assembly to control the extendable movement of said movable frame assembly relative to said tailgate frame, said latch mechanism being operable to locate said movable frame assembly in at least two extended positions, including a locked extended position and a pivotable extended position, said cross member being pivotably movable relative to said tailgate frame when said movable frame is in said pivotable extended positio said latch mechanism being independently operable from said tailgate latch apparatus.

24. The pick-up truck of claim 23 wherein said tailgate frame supports a pivot bracket positioned to receive a pivot pin mounted on said movable frame assembly when said movable frame assembly has been located in said pivotable extended position, said pivot bracket enabling said movable frame assembly to pivot downwardly relative to said tailgate frame such that said cross member is located below said tailgate frame to serve as a step for accessing said bed, and to pivot upwardly relative to said tailgate frame such that said cross member is located above said tailgate frame.

25. The pick-up truck of claim 24 further comprising:

a guide apparatus supporting said movable frame assembly for telescopic movement therefrom to affect said extendable movement thereof, said guide apparatus being mounted in said tailgate frame.

26. The pick-up truck of claim 24 wherein said movable frame assembly includes a pivotable molding mounted on said cross member cooperable with said latch mechanism to affect actuation thereof.