JP2008260350A - Back door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a back door capable of easily performing exchange work of a license lamp and effectively preventing theft. <P>SOLUTION: The back door 1 has an outer panel 2, an inner panel 3 and a trim 4, and is provided with a cylindrical bracket 5 having one end 51 opened to the outer panel 2 side and the other end 52 insert-molded to a peripheral edge of a working hole 41 of the trim 4. On the working hole 41 of the trim 4, tapered working gradually approaching to an inner wall of the bracket 5 is formed. The trim 4 has a rib 42 at a periphery of the bracket 5, and the trim 4 and the inner panel 3 have an engagement claw 43 and an engagement hole 32 as engagement parts engaged with each other. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a back door structure for preventing theft of an automobile, and more particularly to a backdoor having an antitheft structure in an automobile equipped with a license lamp.

  Conventionally, many automobiles having a back door are provided with a license lamp for illuminating a license plate installed on the back door. In such automobiles, the theft of removing the license lamp from the outside with all the automobile doors locked, accessing the back door locking mechanism through the gap between the inner panel and the outer panel of the back door, and releasing the lock There is a trick.

  In order to prevent such theft, a so-called antitheft bracket has been devised. For example, as shown in FIG. 3, the conventional anti-theft bracket 100 includes a pair of substantially cup-shaped members, and the bracket 100 of the substantially cup-shaped member is disposed on the back side of the license lamp 102 below the rear window glass G of the back door 101. It opens toward the outer panel 101a and the inner panel 101b, and is screwed to the inner panel 101b by screws 105 and grommets 106.

  After the antitheft bracket 100 is attached to the inner panel 101b, the trim 103 is attached to the inner panel 101b. The trim 103 is made of a resin material, and includes a pair of work holes 103a for exchanging the bulbs of the license lamp 102. The work holes 103a are covered with a cover 103b at normal times.

  The back door 101 provided with such an anti-theft bracket 100 is configured as shown in a cross-sectional view in FIG. 4, and when replacing the license lamp 102, the cover 103b of the trim 103 is removed and the work hole 103a is interposed. The anti-theft bracket 100 is removed by removing the screw 105, and the license lamp 102 is accessed and replaced from the inside of the vehicle, that is, the right side in FIG.

  By the way, in the back door 101 provided with such an anti-theft bracket 100, the number of parts is large, and a tool is required to replace the license lamp 102, and the end portion of the sheet metal such as the inner panel 101b is used for replacement work. There is also a risk of interference.

  Therefore, as shown in FIG. 5, a structure in which a cylindrical antitheft bracket 200 is fixed to the periphery of the work hole 203 a on the back surface of the trim 203 by heat caulking, and this is mounted on the back side of the back door 201 can be considered. As shown in FIG. 5 (B), the anti-theft bracket 200 is fixed to the trim 203 by heat caulking at one end 200b in advance, and the license lamp of the back door 201 as shown in FIG. 5 (A). On the back side of 102, the anti-theft is prevented by mounting the anti-theft bracket 200 integrated with the trim 203 so that the other end 200a is pressed against the outer panel 201a.

  According to such a back door 201, as shown in FIG. 6, when replacing the license lamp 102, the cover 203b can be removed and the license lamp 102 exposed in the work hole 203a can be easily replaced. Tools can be eliminated and work performance problems can be solved.

  However, in such an anti-theft structure, the coupling force between the bracket 200 and the trim 203 and between the trim 203 and the inner panel 201b is weak, and when a strong force is applied to the bracket 200, the bracket 200 comes off from the trim 203, Further, when a strong force is applied to the trim 203, the trim 203 is detached from the inner panel 201b, so that a lock mechanism (not shown) provided between the inner panel 201b and the outer panel 201a can be accessed from the outside of the vehicle. There was a problem.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide a back door that can easily replace a license lamp and can effectively prevent theft.

  In order to achieve the above object, a back door of the present invention is a back door having an outer panel, an inner panel, and a trim. The trim has a work hole for exchanging a license lamp, and one end is opened to the outer panel side. The other end is provided with a cylindrical bracket insert-molded around the periphery of the working hole.

  The inner wall portion of the working hole is preferably tapered so as to approach the inner wall of the bracket.

  The trim may include a rib around the bracket.

  The trim and the inner panel preferably have engaging portions for engaging with each other.

  According to the back door of the present invention, since the cylindrical bracket is insert-molded at the periphery of the work hole of the trim, it cannot be accessed between the outer panel and the inner panel, and the bracket does not come off from the trim. Therefore, theft can be prevented.

  By performing the taper processing, the valve replacement operation can be performed smoothly, and it is difficult to apply force to the bracket, so that theft can be more effectively prevented.

  By providing ribs around the trim bracket, the bracket and the trim are more firmly coupled.

  The trim and the inner panel are firmly engaged by the engaging portion, and theft due to the trim itself being detached can be prevented.

  Hereinafter, embodiments of the back door of the present invention will be described in detail with reference to the drawings. 1A and 1B show a back door 1 according to an embodiment of the present invention, in which FIG. 1A shows a state where an inner panel and an outer panel are viewed from the inside of the vehicle, and FIG. 1B shows a state where a trim is viewed from the outside of the vehicle.

  As shown in FIG. 1A, the back door 1 has an outer panel 2, an inner panel 3, and a trim 4 made of a resin material, and a license lamp 102 is provided below the rear window glass G. The license lamp 102 is a lamp for illuminating the license plate outside the back door 1. In the inner panel 3 and the trim 4, an opening 31 and a work hole 41 for exchanging the license lamp 102 are provided at positions corresponding to the license lamp 102. Usually, a cover 45 is provided to close the work hole 41. Installed. About the above structure, it is the same as that of the back door of a prior art example.

  As shown in FIG. 1B, the back door 1 according to the present embodiment has one end opened to the outer panel 2 side (the front side in FIG. 1B) and the other end to the periphery of the work hole 41 of the trim 4. It is characterized by comprising insert-molded cylindrical brackets 5a and 5b.

  More specifically, the brackets 5a and 5b are members formed in a rectangular tube shape by sheet metal, and as shown in FIG. The other end 52 is insert-molded around the periphery of the work hole 41 of the trim 4. Thus, the brackets 5a and 5b are firmly fixed to the trim 4 and cannot be easily removed.

  The inner wall 41a extending to the inner walls of the brackets 5a and 5b in the work hole 41 of the trim 4 is tapered. That is, the inner wall portion 41a is thickest at a portion close to the opening 41b, and gradually becomes thinner as it gets away from the opening 41b, and asymptotically approaches the inner walls of the brackets 5a and 5b. As a result, no step is formed between the brackets 5a and 5b and the inner wall portion 41a, so that the brackets 5a and 5b can be easily put in and operated, while the brackets 5a and 5b are removed. Even if it is going to be removed, it becomes difficult to apply force to the inner wall.

  As shown in FIG. 1B, a plurality of triangular ribs 42 are provided around the joint portion of the work hole 41 of the trim 4 with the brackets 5a and 5b. The ribs 42 are formed in a right triangle shape, and one of the sides sandwiching the right angle is abutted against the brackets 5 a and 5 b and the other is abutted against the trim 4. Thereby, adhesion with bracket 5a, 5b and the trim 4 becomes stronger, and these cannot be removed easily.

  Moreover, the trim 4 and the inner panel 3 have an engaging claw 43 and an engaging hole 32 as engaging portions for engaging with each other. The engaging claw 43 is provided with a plurality of protrusions on the surface of the trim 4 adjacent to the inner panel 3 and has a flange 43a bent downward near the tip thereof. On the other hand, the engagement hole 32 is a hole formed in a portion corresponding to the engagement claw 43 in the inner panel 3, and the hook portion 43 a of the engagement claw 43 is caught in the engagement hole 32 so that the both are engaged. Then, the trim 4 and the inner panel 3 are connected. Thereby, it can prevent that trim 4 itself remove | deviates from the inner panel 3. FIG.

  In assembling such a back door 1, a trim 4 in which brackets 5 a and 5 b are insert-molded is joined to a back door body 23 in which the inner panel 3 and the outer panel 2 are integrated. At this time, one end 51 of the brackets 5 a and 5 b is inserted into the opening 31 of the inner panel 3. Further, the flange 43a of the engagement claw 43 is inserted into the engagement hole 32 and engaged. A cover 45 is fitted into the work hole 41 of the trim 4.

  When replacing the license lamp 102, the cover 45 fitted in the work hole 41 of the trim 4 is removed from the inside of the vehicle, and the license lamp 102 is replaced by putting hands in the brackets 5a and 5b. At this time, since the portion 41a extending to the inner wall of the bracket 5a, 5b in the work hole 41 of the trim 4 is tapered, the bracket 5a, 5b can be easily operated without being caught.

According to such a back door 1, even if the license lamp 102 is broken from the outside of the vehicle and an attempt is made to access a lock mechanism (not shown) provided in the space S between the outer panel 2 and the inner panel 3, the bracket This cannot be done by the inner walls of 5a and 5b. Moreover, even if it is going to remove bracket 5a, 5b, since bracket 5a, 5b is insert-molded to the trim 4 and is reinforced with the rib 42, this cannot be removed. Further, even if the trim 4 itself is to be removed from the inner panel 3, the trim 4 is engaged with the engaging hole 32 by the engaging claw 43, so that the trim 4 does not come off from the inner panel 3.
As described above, according to the back door 1, theft by accessing the lock mechanism from the license lamp 102 can be effectively prevented.

It is a perspective view which shows the back door which concerns on embodiment of this invention, (A) is the state which removed the trim and was seen from the vehicle inside, (B) shows the state which looked at the trim from the vehicle outside. It is the AA sectional view in Drawing 1 (A) which shows the completed state of the back door of Drawing 1. It is a disassembled perspective view which shows the back door of a prior art example. It is sectional drawing which shows the back door of FIG. The other back door of a prior art example is shown, (A) is an exploded perspective view, (B) is the exploded perspective view which looked at the trim from the vehicle outer side. It is sectional drawing which shows the back door of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Back door 2 Outer panel 3 Inner panel 4 Trim 5a, 5b Bracket 31 Opening part 32 Engagement hole 41 Working hole 41a Inner wall part 41b Opening part 42 Rib 43 Engagement claw 43a Eave part 51,52 End 100,200 Bracket 101,201 Back door 101a, 201a Outer panel 101b, 201b Inner panel 102 License lamp 103, 203 Trim 103a, 203a Work hole 103b, 203b Cover 105 Screw 106 Grommet G Rear window glass

Claims (4)

A back door having an outer panel, an inner panel, and a trim,
The trim includes a work hole for exchanging the license lamp, and a cylindrical bracket that has one end opened on the outer panel side and the other end is insert-molded on the periphery of the work hole. back door.   The back door according to claim 1, wherein the inner wall portion of the working hole is tapered so as to approach the inner wall of the bracket.   The back door according to claim 1, wherein the trim includes a rib around the bracket.   The back door according to any one of claims 1 to 3, wherein the trim and the inner panel have an engaging portion for engaging with each other.

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