This application claims the benefit of U.S. nonprovisional patent application Ser. No. 11/534,237, filed Sep. 22, 2006, which is incorporated herein by reference.
The present application relates generally to an adjustable hinge assembly, and in particular to an adjustable hinge assembly that can be used with a vehicle deck lid or other vehicle closure.
Typically, in automotive vehicles, the various closures are mounted with hinges that may be adjustable in order to assure that the closures are maintained flush with adjacent body structure when in their closed positions. For example, a pair of adjustable hinges is commonly provided to support a rear deck lid of a sedan body style of an automotive vehicle. Such adjustable hinges are typically mounted to vehicle body structure below the rear window, adjacent to a trunk opening, and include hinge straps that are attached to the deck lid and pivot relative to the body structure. Since it is desirable to have the deck lid flush with the surfaces of the adjacent quarter panels when in the closed position, different types of adjustment mechanisms have been employed in the hinge assemblies to allow for adjustment of the deck lid relative to the vehicle body structure.
The adjustable hinge assemblies for these various deck lid hinges, however, have drawbacks that make them less than ideal. For example, the hinge adjustment mechanism may be easily accessible only in a vehicle assembly plant prior to installation of a rear window. Adjustment of the flushness of the deck lid at a later time, should the need arise, is particularly difficult with these types of adjustable hinge assemblies. Some adjustable hinge assemblies may be more costly or complex than is desired. Some of these conventional adjustable hinges may provide adjustment in a direction that is significantly different from normal to the surface of the deck lid, which may complicate the deck lid flushness adjustment process or limit the type of attachment of the hinges to the body structure. And, some adjustable hinge assemblies may require more time and effort on the part of an assembly worker to adjust the hinges than is desirable.
Thus, it is desirable to provide a hinge assembly for use in vehicle closures that allows for easy and accurate adjustment of the flushness of the closure relative to adjacent body panels, preferably both during and after assembly of the vehicle.
An embodiment contemplates a hinge assembly for use with a vehicle deck lid to allow the vehicle deck lid to move between an open position and a closed position relative to a vehicle trunk opening and adjust a flushness of the deck lid relative to an adjacent body structure. The hinge assembly may include a hinge box, a hinge pin and an adjustment pin. The hinge box is mountable to vehicle structure adjacent to the vehicle trunk opening and has a first side defining a first adjustment slot extending in a longitudinal direction and a second side, spaced from the first side, defining a second adjustment slot extending in the longitudinal direction, and an adjustment pin support. The hinge pin has a body defining a central bore extending therethrough, a first shaft end extending from the body through the first adjustment slot and an opposed second shaft end extending from the body through the second adjustment slot, with the first and second shaft ends axially slidable in the longitudinal direction in the respective first and second adjustment slots. The adjustment pin extends through the central bore and axially supports the hinge pin, with the adjustment pin including first adjustment threads that threadably engage and are rotatable relative to the adjustment pin support and support the adjustment pin relative to the hinge box, and with the adjustment pin having a first end adjacent to the adjustment pin support and an opposed second end adjacent to the central bore of the hinge pin, the second end including a tool engagement feature that is configured to be engageable by a tool from within a trunk to cause the adjustment pin to rotate relative to the central bore and threadably rotate relative to the adjustment pin support.
An embodiment contemplates a hinge assembly for use with a vehicle deck lid to allow the vehicle deck lid to move between an open position and a closed position relative to a vehicle trunk opening and adjust a flushness of the deck lid relative to an adjacent body structure. The hinge assembly comprises a hinge box, a hinge pin and an adjustment pin. The hinge box is mountable to vehicle structure adjacent to the vehicle trunk opening and has a first side defining a first adjustment slot extending in a longitudinal direction and a second side, spaced from the first side, defining a second adjustment slot extending in the longitudinal direction, and an adjustment pin support including a threaded bore therethrough. The hinge pin has a body defining a central bore extending therethrough, a first shaft end extending from the body through the first adjustment slot and an opposed second shaft end extending from the body through the second adjustment slot, with the first and second shaft ends axially slidable in the longitudinal direction in the respective first and second adjustment slots. The adjustment pin extends through the central bore and axially supports the hinge pin, with the adjustment pin having a first end adjacent to the adjustment pin support and an opposed second end adjacent to the central bore of the hinge pin, and with the adjustment pin including first adjustment threads adjacent to the first end that threadably engage and are rotatable relative to the threaded bore and a first tool engagement feature adjacent to the first end that is configured to be engageable by a tool from outside a trunk to cause the adjustment pin to rotate relative to the central bore and threadably rotate relative to the threaded bore, and with the adjustment pin including a second tool engagement feature adjacent to the second end that is configured to be engageable by a tool from within the trunk to cause the adjustment pin to rotate relative to the central bore and threadably rotate relative to the threaded bore.
An advantage of an embodiment is that the hinge assembly allows for adjustment of the deck lid height after assembly of the rear window into the vehicle. Thus, when needed, adjustments can be made to the height of the deck lid relative to the vehicle rear quarter panels relatively easily, even after assembly of the vehicle has been completed.
An advantage of an embodiment is that a retained nut positively engages a hinge box, which allows for positive adjustment both up and down, without relying on gravity, and without requiring that the nut be welded to the hinge box.
The hinge assembly 32 includes a hinge box 36, which has a first hinge box bracket 38 and a second hinge box bracket 40. Each hinge box bracket 38, 40 includes a front mounting flange 42, 43, respectively, which partially overlap, and a rear mounting flange 44, 45, respectively, which overlap. Each hinge box bracket 38, 40 also includes a vertically extending side 46, 47, respectively, that extends between the front mounting flanges 42, 43 and the rear mounting flanges 44, 45, respectively. Hinge support flanges 48, 49 extend from the sides 46, 47, respectively, and meet to form an adjustment pin opening 50. The adjustment pin opening 50 aligns with an adjustment access hole 51 in the body structure 26 (shown in
The hinge box 36 may include mounting holes 54 extending through the front mounting flanges 42, 43 and the rear mounting flanges 44, 45 (shown in
The hinge assembly also includes a hinge pin 60. The hinge pin 60 has a cylindrical body 62 with a first cylindrical shaft end 64 extending from the body 62 and a second cylindrical shaft end 65 extending from an opposed side of the body 62—the body 62 and shaft ends 64, 65 defining a pivot axis 68. The first shaft end 64 extends through adjustment slot 52 in the first hinge box bracket 38 and the second shaft end 65 extends through adjustment slot 53 in the second hinge box bracket 40.
A first sleeve 58 is mounted on and can rotate relative to the first shaft end 64 and a second sleeve 59 is mounted on and can rotate relative to the second shaft end 65 (shown in
The hinge pin 60 also includes a central bore 66 extending through the body 62 substantially perpendicular to the pivot axis 68. The central bore 66 is threaded for mating engagement with an adjustment pin 70.
The adjustment pin 70 has opposed ends with first adjustment threads 72 and an adjacent first tool engagement feature 74 on a first end 76, and second adjustment threads 73 and an adjacent second tool engagement feature 75 on a second end 77. The first and second tool engagement features 74, 75 may be internal or external features that allow a wrench, screwdriver or other tool to grip the particular feature and rotate the adjustment pin 70. The first and second adjustment threads 72, 73 are opposite-handed. That is, if one is right-hand threaded, then the other is left-hand threaded (as viewed from the same end of the adjustment pin 70). The second adjustment threads 73 engage with the threaded central bore 66 in the hinge pin 60, while the first adjustment threads 72 engage with a threaded bore 80 in a retained square nut 82. An access slot 78 in the hinge strap 34 allows the second tool engagement feature 75 to be more accessible when the hinge strap 34 is in a deck lid open position (shown in
The retained square nut 82 includes a groove 84 that is secured both axially and rotationally within the adjustment pin opening 50. The nut 82 can have a shape other than square so long as the groove 84 is shaped to be restrained axially and rotationally relative to the hinge support flanges 48, 49 of the hinge box 36. In fact, if so desired, one may employ a nut secured to the hinge support flanges 48, 49 (welded or clinched), or may create an integral nut-type feature in the hinge support flanges 48, 49 themselves, so long as threaded adjustment pin support is provided. These alternatives, however, may make fabrication or assembly somewhat more difficult.
The adjustment pin 70, then, supports the hinge pin 60 relative to the hinge box 36 and determines the axial location of the hinge pin 60 within the adjustment slots 52, 53, with the orientation of the adjustment slots 52, 53 defining the direction of adjustability of the hinge pin 60. The hinge strap 34 includes a pair of bushings 86 that each mount around a respective one of the shaft ends 64, 65, completing a pivot joint 88 about which the hinge strap 34 can rotate. Since the hinge strap 34 moves up and down with the hinge pin 60 and is mounted to the deck lid 30 (shown in
An assembly process for the hinge assembly 32 will now be discussed with respect to
One will note that, whether the adjustment is accomplished by engaging the first tool engagement feature 74 or the second tool engagement feature 75, as the adjustment pin 70 is rotated it raises or lowers the hinge pin 60 twice as fast (for a given thread pitch) as a bolt with a single set of threads. That is, when rotated in a first direction, the square nut 82 and hinge pin 60 are simultaneously drawn toward the center of the adjustment pin 70. When rotated in the opposite direction, the square nut 82 and hinge pin 60 are simultaneously drawn toward the ends 76, 77, respectively, of the adjustment pin 70. The oppositely oriented threads for the first and second adjustment threads 73, 73 allow for this. This may allow for a more rapid adjustment of the deck lid height.
One more feature that is preferably included (as illustrated in
As an alternative, the adjustment slots 52, 53 can be oriented normal to an imaginary line between the pivot joint 88 and the trunk latch (not shown). This would maintain the position of the trunk latch and striker during flushness adjustments. However, as discussed above, this is a generally less desirable orientation for the slots 52, 53 since it will likely cause some undesirable fore-aft movement of the front edge of the deck lid 30 relative to the vehicle body structure 26 during flushness adjustments. Such fore-aft movement during flushness adjustments may prevent the use of net sized mounting holes in the vehicle body structure 26 and hinge boxes 36.
While the adjustable hinge assemblies shown herein have been described as they relate to a deck lid of a vehicle, they can also be employed in other hinging applications that may require an adjustment feature in order to assure that a closure is flush with adjacent vehicle body structure.
The hinge pin 160 still includes a main body 162 with a central bore 166 extending therethrough, and first and second cylindrical shaft ends 164, 165. As with the first embodiment, shaft ends 164, 165 support the hinge strap 134 via bushings 186 and extend through adjustment slots 152, 153, respectively. Also, an adjustment pin 170 includes a first tool engagement feature 174 adjacent to first adjustment threads 172, which again engage with a retained square nut 182. The nut 182 again includes a groove 184 that is retained within an adjustment pin opening 150 formed by hinge support flanges 148, 149.
The second embodiment differs from the first embodiment in that the adjustment pin 170 does not include threads that engage the central bore 166 of the hinge pin 160. Rather, the adjustment pin 170 is axially retained within the central bore 166 via an integral retention flange 173 and a removable retaining clip 192, while being free to rotate within the central bore 166. Even so, the adjustment pin 170 of this embodiment still includes the second tool engagement feature 175 that is accessible through the access slot 178 in the strap 134. This embodiment, then, retains the features of the first embodiment, with the exception of doubling the axial speed of adjustment when the adjustment pin 170 is rotated via the first or second tool engagement features 174, 175.
The hinge pin 260 still includes a main body 262 with a central bore 266 extending therethrough, and first and second cylindrical shaft ends 264, 265. As with the first embodiment, shaft ends 264, 265 support the hinge strap 234 via bushings 286 and extend through adjustment slots (only 252 shown). Also, an adjustment pin 270 includes first adjustment threads 272, which again engage with a retained nut 282, and second adjustment threads 273 that are threaded into the central bore 266. The retained nut 282 includes a groove 284 that is retained within an adjustment pin opening 250 formed by the hinge support flanges 248, 249.
The third embodiment differs from the first embodiment in that the adjustment pin 270 does not include a second tool engagement feature. In addition, the first tool engagement feature 274 is now on the nut 282 rather than the adjustment pin 270, with the nut 282 being able to rotate within pin opening 250, even though axially it is still trapped. During the assembly process, after the hinge pin 260 is assembled into the hinge strap 234 and the second adjustment threads 273 are engaged within the central bore 266 at a desired location, the adjustment pin 270 is secured to the hinge pin 260 so no translation or rotation between the two can take place. Accordingly, during a flushness adjustment process, the second adjustment threads 173 do not move relative to the hinge pin 260.
The flushness adjustment process is accomplished by engaging a tool (not shown) with the first tool engagement feature 274 on the retained nut 282, and rotating the nut 282 relative to the adjustment pin 270. This will cause the nut 282 to ride up or down the first adjustment threads 272, thereby adjusting the height of the hinge pin 260, which ultimately affects the height of the deck lid (not shown in this embodiment). Since the groove 284 of the nut 282 is retained in the adjustment pin opening 250 of the hinge box 236, there will be positive displacement for both the upward and downward movement of the hinge pin 260.
While certain embodiments of the present invention have been described in detail, those familiar with the art to which this invention relates will recognize various alternative designs and embodiments for practicing the invention as defined by the following claims.
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Number | Date | Country | |
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Number | Date | Country | |
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Parent | 11534237 | Sep 2006 | US |
Child | 12500989 | US |