JPH061493Y2 - Mounting structure of resin bumper in vehicle - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a resin bumper mounting structure for a vehicle, and is particularly caused by a difference in thermal expansion amount between the vehicle body and the bumper when the temperature rises due to direct sunlight or the like. The present invention relates to a structure of a mounting bracket which can absorb the so-called heat shrinkage and can prevent the vehicle body surface from being damaged when the bumper is assembled.

[Conventional technology]

2. Description of the Related Art In vehicles, bumpers having a substantially U-shape in plan view are attached to front and rear ends of a vehicle body to generally absorb a shock in a light collision of the vehicle. In the conventional vehicle, a sheet metal bumper is used, but recently, a synthetic resin bumper tends to be widely used from the viewpoint of weight reduction and the like.

By the way, since the resin bumper has low rigidity itself, fixing only the central portion to the vehicle body as in the conventional sheet metal bumper causes a problem that the U-shaped bent portions are easily vibrated. Occurs.

Therefore, conventionally, when mounting a resin bumper,
The U-shaped bent portions at both ends are also fixed to the side surface of the vehicle body through a bracket made of sheet metal.

[Problems to be solved by the invention]

However, in the conventional mounting structure, since the bent portions at both ends are simply fixed to the side surface of the vehicle body, there is a problem that the bumper is wrinkled and deformed due to thermal contraction after assembly.

Further, when the bumper is assembled, there is a problem that the bent portions at both ends or the sheet metal bracket may interfere with the vehicle body side surface and damage the vehicle body side surface due to the low rigidity of the bumper.

In view of such a problem, the present invention is to provide a resin bumper mounting structure in a vehicle that can absorb thermal contraction of the bumper and prevent damage to the side surface of the vehicle body when the bumper is assembled.

[Means for solving problems]

Therefore, in the invention, in a mounting structure of a resin bumper in a vehicle, a metal plate bracket is bolted and fixed to the bent portions at both ends of the bumper, and the resin bracket is slidable in the vehicle front-rear direction in the metal plate bracket. A guide portion is integrally formed with the resin bracket for guiding the bent portion along the side surface of the vehicle body when the bumper is assembled to the vehicle body, and the resin bracket is bolted and fixed to the vehicle body. Is characterized by.

[Action]

In this invention, a metal plate bracket is fixed to the bent portion of the bumper, and a resin bracket is attached to this.
Since the resin bracket is fixed to the vehicle body, the bent portion of the resin bumper can be reinforced. Further, in this case, since the guide portion is formed on the resin bracket, the guide portion can guide the bent portion of the bumper along the vehicle body surface without damaging the vehicle body surface by the sheet metal bracket when the bumper is assembled.

Further, since the metal plate bracket and the resin bracket are slidably engaged in the vehicle front-rear direction, that is, in the heat contraction direction of the bumper, even if the bumper heat contracts after assembly, both brackets slide against each other. As a result, the heat shrinkage of the bumper can be absorbed, and the bumper is not wrinkled or deformed.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

1 to 4 show a resin bumper mounting structure in a vehicle according to an embodiment of the present invention, and FIGS. 2 and 3 are sectional views taken along line II-II and line III-III of FIG. 1, respectively. FIG. In the figure, reference numeral 2 denotes a rear bumper attached to the rear end of the vehicle body 1. The rear bumper 2 is made of resin, and has a straight portion 2a extending in the vehicle width direction and a bent portion 2b extending to the front of the vehicle following both ends of the straight portion 2a. It has a substantially U shape in plan view. Then, the left and right 2 of the straight portion 2a of the rear bumper 2
The place is bolted to the car body 1 and bent at both ends 2b
A mounting bracket 5 is provided between the vehicle body 1 and the side surface 4 of the vehicle body 1.

The mounting bracket 5 is a resin bracket 6 made of resin.
And a bracket 7 made of sheet metal, and the resin bracket 6 and the sheet metal bracket 7 are bolts 8,
It is fixed to the vehicle body side surface 4 and the bent portion 2b by 9.

The sheet metal bracket 7 of the mounting bracket 5 is formed by welding bent pieces 7a to the upper and lower ends of the strip-shaped base plate 7c, respectively. An engagement groove 7b is formed. Further, the resin bracket 6 of the mounting bracket 5 has a pair of engaging projections 6a formed on the upper and lower ends of the base 6c, and a fixing nut is inserted into the back surface of the base 6c. The protrusion 6a is slidably engaged with the engaging groove 7b, and thus the resin bracket 6 and the sheet metal bracket 7 of the mounting bracket 5 are slidably engaged with each other in the heat shrinking direction of the bumper. Have been combined.

The resin bracket 6 of the mounting bracket 5 is integrally formed with a guide portion 6b extending in the front-rear direction of the vehicle body and having a semi-cylindrical portion at its tip. The guide portion 6b
Is for guiding the bent portion 2b along the vehicle body side surface 4 when the bumper is assembled. Here, for the resin bracket 6 of the mounting bracket 5, it is desirable to select a resin made of a soft material that does not damage the side surface 4 of the vehicle body when the bumper is assembled and has a small contact resistance with the side surface 4 of the vehicle body.

Next, a method of assembling the bumper 2 will be described.

When the bumper 2 is assembled to the vehicle body 1, first, the sheet metal bracket 7 of the mounting bracket 5 is fixed to the bent portion 2b of the bumper 2 by the bolt 9, and the resin bracket is fitted in the engaging groove 7b of the sheet metal bracket 7. The engaging protrusion 6a of 6 is inserted to engage the metal plate bracket 7 and the resin bracket 6.

When the mounting bracket 5 is attached to the bent portion 2b of the bumper 2 in this manner, the bumper 2 is then arranged at a predetermined position at the rear end of the vehicle body 1. At this time, the bent portion 2b of the bumper 2 is guided by the guide portion 6b of the resin bracket 6 of the mounting bracket 5, and is disposed at a predetermined position without interfering with the vehicle body side surface 4. After that, the straight portion 2a of the bumper 2 is bolted and fixed to the vehicle body 1, and the bolt 8 is screwed into the resin bracket 6 of the mounting bracket 5 through the work hole 4a of the vehicle body side surface 4 to thereby bend the bent portion 2b. It is fixed to the vehicle body side surface 4. Since the method of attaching the straight portion 2a of the bumper 2 is the same as a conventionally known one, its detailed description is omitted.

In the mounting structure of this embodiment as described above, since the mounting bracket 5 is provided with the resin guide portion 6b,
When the bumper 2 is assembled, the bent portion 2b of the bumper 2 or the sheet metal bracket 7 made of sheet metal does not interfere with the vehicle body side surface 4, and as a result, the vehicle body side surface 4 can be prevented from being damaged.

Further, in this structure, since the mounting bracket 5 is divided into the resin bracket 6 and the sheet metal bracket 7 and both are slidably engaged in the heat shrinking direction, the heat shrinkage of the bumper 2 after assembly is absorbed. It is possible to prevent the bumper 2 from being deformed.

Although the rear bumper mounting structure has been described in the above embodiment, the present invention can be similarly applied to the front bumper mounting structure. Further, the bracket 7 made of sheet metal of the mounting bracket 5 may be formed by cutting and raising the engaging groove 7d as shown in FIG. 5, instead of welding the bent pieces.

[Effect of device]

As described above, according to the present invention, the mounting bracket is provided between the side surface of the vehicle body and the bent portions at both ends of the bumper, and the bracket is composed of a resin resin bracket and a sheet metal bracket. The resin bracket and the sheet metal bracket are slidably engaged with each other in the heat shrinking direction of the bumper, and a guide portion for guiding the bent portion along the side surface of the vehicle body is formed on the resin bracket. Therefore, it has the effect of absorbing the heat shrinkage of the bumper after assembly and preventing the deformation of the bumper.It also prevents the bending part or the sheet metal part from interfering with the side surface of the vehicle body during assembly to prevent damage to the vehicle body. There is an effect that can be prevented.

[Brief description of drawings]

1 is a schematic perspective view of a resin bumper in a mounting structure according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is a sectional view taken along line III-III of FIG. FIGS. 4 and 5 are exploded perspective views of the mounting bracket in the mounting structure, and FIG.
The figure is a view for explaining another embodiment of the present invention. In the figure, 1 is a vehicle body, 2 is a resin bumper, 2b is a bent portion, 4 is a vehicle body side surface, 5 is a mounting bracket, 6 is a resin bracket, 6b is a guide portion, and 7 is a sheet metal bracket.

Claims (1)

[Scope of utility model registration request] 1. A mounting structure of a resin bumper in a vehicle for mounting a resin bumper having a substantially U-shape in a plan view to a front end or a rear end of a vehicle body, wherein a bracket made of a metal plate is bolted to bent portions at both ends of the bumper. Fasten and fix, and engage the metal plate bracket with the resin bracket slidably in the vehicle front-rear direction, and when the bumper is assembled to the vehicle body, the bent portion is provided along the side surface of the vehicle body. A mounting structure for a resin bumper in a vehicle, wherein a guide portion for guiding is integrally formed, and the resin bracket is bolted and fixed to a vehicle body.