Vehicle liftgate striker and latch construction

Abstract

Several vehicle liftgate striker and latch constructions are disclosed. The striker includes a striker base from which at least one striker pin extends. A latch, having a latch cover, is configured to be mounted on a vehicle liftgate, for juxtaposition to the striker base when the liftgate is closed and the latch engages the at least one striker pin. The striker includes a reactor structure for making contact with the latch cover, when the liftgate is closed, for controlling lateral movement of the latch relative to the striker base. The reactor structure preferably includes at least one roller mounted on a roller support, The latch cover has at least one side which Is angled, so as to exert force, having a lateral component, on the reactor structure. The at least one angled side of the latch cover may Include a detent, for providing additional restraining force, when the liftgate is in the closed position.

Description

FIELD OF THE INVENTION

The invention relates to locking mechanisms, particularly for vehicle liftgates, and further in particular to striker and latch structures, as opposed to actual lock mechanisms.

SUMMARY OF THE INVENTION

The present invention is directed to vehicle liftgate striker and latch constructions, used to hold a vehicle liftgate in, and release it from, a closed and locked position.

In particular, the present invention is directed to a vehicle liftgate striker and latch construction which is configured to control lateral movement of the liftgate, relative to the striker, and to provide assistance in pushing the liftgate away from the striker, when the latch is unlocked, by advantageously configuring the latch cover with a tapered profile, in combination with resilient latch reaction assemblies associated with the striker assembly.

BRIEF DESCRIPTION OF THE DRAWINGS

Any indicia shown herein are for illustrative purposes only, and the scope of the invention is not to be construed to be limited thereto. Any numerical values appearing herein are provided solely as examples of an embodiment or embodiments of the invention, and the scope of the invention is not limited by them.

FIG. 1 is a perspective view of the striker assembly according to an embodiment of the invention.

FIG. 2 is a front view of the striker assembly of FIG. 1.

FIG. 3 is a top view of the striker assembly of FIG. 1.

FIG. 4 is an end view of the striker assembly of FIG. 1.

FIG. 5 is a perspective view of the striker assembly of FIG. 1, with the overtravel bumper omitted.

FIG. 6 is a another perspective view of the striker assembly of FIG. 1.

FIG. 7 is still another perspective view thereof.

FIG. 8 is a plan view of the striker base, prior to forming.

FIG. 9 is a side elevation in section of a roller for the striker assembly.

FIG. 10 is a side elevation of the roller of FIG. 9.

FIG. 11 is a top view thereof.

FIG. 12 is a perspective view thereof.

FIG. 13 is a side elevation, in section, of a roller pin for the striker assembly of the present invention.

FIG. 14 is a side elevation thereof.

FIG. 15 is an end view thereof.

FIG. 16 is a perspective view thereof.

FIG. 17 is a side elevation of the wire form (or striker pin) for the striker assembly according to an embodiment of the invention.

FIG. 18 is a top view thereof.

FIG. 19 is an end view thereof.

FIG. 20 is a perspective view of the roller support structure for the striker assembly according to an embodiment of the invention.

FIG. 21 is an end view thereof.

FIG. 22 is a front view thereof.

FIG. 23 is a bottom view thereof.

FIG. 24 is a top view thereof.

FIG. 25 is a side elevation of a roller sleeve for the striker assembly according to an embodiment of the invention.

FIG. 26 is a side elevation in section thereof.

FIG. 27 is a top perspective view thereof.

FIG. 28 is an end view thereof.

FIG. 29 is a top view of the overtravel bumper for the striker assembly according to an embodiment of the invention.

FIG. 30 is a front view thereof.

FIG. 31 is an end view thereof.

FIG. 32 is a sectional view thereof.

FIG. 33 is a perspective view thereof.

FIG. 34 is a top perspective view of a liftgate latch cover for use with the striker assembly according to an embodiment of the invention.

FIG. 35 is a top view of the latch of FIG. 34, shown in engagement with a striker assembly according to an embodiment of the invention.

FIG. 36. is a schematic illustration of a latch cover for use with the present invention, showing several alternative configurations.

FIG. 37 is a perspective view of a striker configuration according to an alternative embodiment of the invention.

FIG. 38 is a further perspective view thereof.

FIG. 39 is a reverse perspective view thereof, showing the interaction between the striker configuration of FIG. 37 and a vehicle liftgate latch.

FIG. 40 is a top view of the striker configuration of FIG. 37, in cooperation with a vehicle liftgate latch.

DETAILED DISCLOSURE OF THE INVENTION

While this invention is susceptible of embodiment in many different forms, there are shown in the drawings and will herein be described in detail, several embodiments with the understanding that the present disclosure should be considered as an exemplification of the principles of the invention and is not intended to limit the invention to the embodiments so illustrated. Further, to the extend that any numerical values or other specifics of materials, etc., are provided herein, they are to be construed as exemplifications of the inventions herein, and the inventions are not to be considered as limited thereby.

An embodiment of the vehicle liftgate striker and latch construction of the present invention is shown in FIGS. 1-36. The liftgate striker is intended to reduce door to body vibration and movement. The striker assembly 100 (e.g., FIGS. 1-7) includes base plate 110 and U-shaped wire form 120 as the primary striker features to engage with a latch 140 (FIGS. 34-36) for retention of a vehicle door, hood, deck lid or other closure. It is to be noted that the present invention concerns itself primarily with the interaction between the latch cover 142 and the structures surrounding the striker pin (wire form 120), and not the direct interaction between the latching members and the striker pin (wire form 12) themselves. As such a variety of different latching mechanisms may be employed by one of ordinary skill in the art, without departing from the scope of the present invention. Therefore, the latching mechanism is shown in broken lines in FIGS. 34-35.

The inherent tolerances in a conventional vehicle door/liftgate closure system allow the door to move when closed and the latch is engaged. The internal tolerances of a conventional latch can allow components to move and thus the door which is attached to the latch and or striker is allowed to move and vibrate.

According to the present invention, a tensioned roller assembly provides compression against the latch cover 142 and reduces the free lateral movement of the latch-to-striker interface. The amount of movement is controlled by the amount of tension roller support arms 130 apply to the latch cover 142. The rollers 136 provide minimal friction when engaging with latch 142, because the rollers 136 roll up the sides of the latch cover 142. The over-travel bumper 144 extending transversely across the end of striker frame 128 is provided to limit the amount of movement transverse to the latch 140 whereas the rollers 136 limit the amount of orthogonal or side to side movement. The roller support arms 130 may be a sub-assembly of the overall assembly 100, or a single part formed from the striker base plate 110.

The rollers 136 engage with the latch cover plate 142. The sides of latch cover plate 142 extend at angles, relative to the plane of the wire form 120, to provide modified closing and opening forces. Latch cover 142 may be provided with one or more detents 154 (FIG. 36) located at the full closed (engaged) position to provide an at-rest or neutral area which would require a higher force to move away from and thus provide a limiting action of movement in the transverse direction (the direction of opening and closing of the liftgate). In particular, by coordinating the included angle between the lateral sides of the latch cover 142 with the amount of spring force applied by the roller support arms 130 holding the rollers 136, upon operator release of the latch 140, the roller support arms 130 holding the rollers 136 “squeeze” the latch cover 142, tending to push the latch cover 142 (and hence the liftgate) up and away from the striker assembly 100, thus enabling a lesser strength spring assembly (the springs or torsion arms used to pivotably support the liftgate—not shown) to be used to support for the door.

Striker assembly 100 comprises two resilient spring roller support arms 130 to which the polymer or rubber (or other suitable material) rollers 136 are attached. Striker assembly 100 further includes U-shaped wire-form (striker pin) 120 which engages the latch 140. The elastomer over-travel bumper 144 is provided to protect the latch from damage from excessive door closing forces. In an embodiment of the invention, wire form 120 is formed with preformed faces 148 which engage the front side of the striker base plate 110 (the side that faces the latch). After positioning of the wire-form 120 on base plate 110, the ends 150 of wire-form 120 may be swaged, to create flattened “buttons” to capture base plate 110 between the buttons and the preformed faces. Other modes of attachment, including welding or brazing, may be employed instead of, or in addition to, swaging, without departing from the scope of the invention.

FIGS. 37-40 illustrate a vehicle liftgate striker configuration according to an alternative embodiment of the invention. Striker assembly 200 includes primary roller support spring plate 202, upon which rollers 204 and 206 are pivotably mounted. Secondary roller support spring arms 208, 210, are mounted on the pins which support rollers 204, 206, respectively. Rollers 212, 214 are pivotably mounted on secondary roller support spring arm 208, and rollers 216, 218 are pivotably mounted on secondary roller support spring arm 210. Striker assembly 200 is configured to accommodate known latch housing 220, which is known from the 2010 Ford Flex and 2010 Ford Expedition, among other vehicles, for example. By providing a plurality of rollers on each “side” of the liftgate latch housing, it is believed that a higher static loading will be placed on the liftgate, as compared to prior art liftgate striker assemblies, while at the same time reducing the dynamic loading that is encountered or perceived by a user, while in the process of closing the liftgate. Detents are not provided in the existing vehicle liftgate latch covers just mentioned.

It is further to be understood that while latching structure details may be shown in FIGS. 39 and 40, in association with an alternative embodiment of the invention, it is again the interaction between the striker assembly 200 as a whole, and the latch housing 220, to which the present invention is primarily focused, and not on the particular details of the latch mechanism itself, and other latching mechanisms other than those shown may be used without departing from the scope of the invention.

The foregoing description and drawings merely explain and illustrate the invention, and the invention is not limited thereto, except as those skilled in the art who have the present disclosure before them will be able to make modifications and variations therein without departing from the scope of the invention.

Claims

1. A striker assembly, comprising: a striker base configured to be mounted to a vehicle opening, the striker base having two opposing ends;at least one striker pin mounted centrally on the striker base between the two opposing ends;two resilient spring support arms each extending proximate from a respective one of the two opposing ends of the striker base, each of the two resilient spring support arms having a roller pivotally mounted at a free end thereof; andeach of the two resilient spring support arms provide a spring force in the direction of the striker pin, such that when a latch is disengaged from the striker pin the spring forces cause the two resilient support arms to squeeze a latch cover via the rollers to provide assistance in pushing the latch away from the striker base.

2. The striker assembly, according to claim 1, wherein the two resilient spring support arms are formed from the striker base.

3. The striker assembly, according to claim 1, further comprising at least one bumper disposed on the striker base and extending across the striker base independent of the two resilient spring support arms.

4. The striker assembly according to claim 3, wherein a void is formed within the at least one bumper and the at least one striker pin is positioned in the void.

5. The striker assembly according to claim 1, further comprising: a first support arm of the two resilient spring support arms mounted at or proximate one end of the striker base and at least one roller pivotably mounted on the first support arm; and a second support arm of the two resilient spring support arms mounted at or proximate an opposite end of the striker base and a second roller pivotably mounted on the second support arm.

6. The striker assembly according to claim 5, wherein the at least one striker pin mounted on the striker base is positioned between the first support arm and the second support arm.

7. The striker assembly according to claim 6, further comprising at least one bumper disposed on the striker base, wherein the bumper has a symmetrical configuration relative to the at least one striker pin with projecting bumper portions disposed to either side of the at least one striker pin.

8. The striker assembly according to claim 5, wherein the at least one bumper is disposed on the striker base between the first support arm and the second support arm.

9. The striker assembly according to claim 5, wherein a spring force of the first support arm opposes a spring force of the second support arm.

10. The striker assembly according to claim 1, wherein each support arm of the two resilient spring support arms move in a lateral direction away from the at least one striker pin when engaged with the latch cover.

11. The striker assembly according to claim 1, further comprising at least one roller pivotably mounted on each support arm of the two resilient spring support arms where the at least one roller mounted on each support arm roll up a side of the latch cover when engaging the latch cover.

12. The striker assembly according to claim 1, further comprising a primary roller support spring plate attached to the striker base wherein each support arm of the two resilient spring support arms is attached to the primary roller support spring plate.

13. The striker assembly according to claim 12, further comprising one or more secondary roller support spring arms attached to the primary roller support spring arms; andat least one roller pivotably mounted on the one or more secondary roller support spring arms.

14. A striker assembly, comprising: a striker base configured to be mounted to a vehicle opening, the striker base having two opposing ends;at least one striker pin mounted centrally on the striker base between the two opposing ends;two resilient spring roller support arms each extending proximate from a respective one of the two opposing ends of the striker base, each of the two resilient spring support arms having at least one roller at a free end thereof; andeach of the two resilient spring support arms provide a spring force in the direction of the striker pin, such that when a latch is disengaging from the striker pin, the spring forces cause the at least one roller of each of the resilient spring support arms to squeeze a latch cover to provide assistance in pushing the latch cover away from the striker base.

15. The striker assembly, according to claim 14, wherein the two resilient spring roller support arms are formed from the striker base.

16. The striker assembly, according to claim 14, further comprising at least one bumper disposed on the striker base and extending across the striker base independent of the two resilient spring roller support arms.

17. The striker assembly according to claim 16, wherein a void is formed within the at least one bumper and the at least one striker pin is positioned in the void.

18. The striker assembly according to claim 14, wherein a first support arm of the two resilient spring roller support arms is mounted at or proximate one end of the striker base and at least one roller is pivotably mounted on the first support arm; anda second support arm of the two resilient spring roller support arms is mounted at or proximate an opposite end of the striker base and at least one roller is pivotably mounted on the second support arm.

19. The striker assembly according to claim 18, further comprising at least one bumper disposed on the striker base and extending across the striker base between the first support arm and the second support arm.