JPS629157Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in a bumper mounting structure for an automobile in which a bumper is attached to a vehicle body frame via a stay member.

Conventionally, this type of bumper mounting structure has been
As shown in Fig. 1, the bumper 1 is mounted by fixing the rear end 3c of the stay 3, which has the forked parts 3a and 3b fixed to the mounting bracket 2 of the bumper 1, to the side surface of the frame 4 (actual). (Refer to Japanese Patent Publication No. 105247/1983), or as shown in FIG. 2, using a stay 5 in which V-shaped legs 5a and 5b are connected by a flat part 5c that abuts on the end surface of the frame 4, It is known that the bumper 1 is mounted and supported on the end face of the frame 4. In either case, the stay is fixed to the bumper in advance and then the bumper is attached to the frame, but in the former mounting structure, the bumper
When the stay 3 is fixed to the frame, if the fixing position is shifted in the left-right direction of the vehicle body, especially in the left direction in FIG. Since the rigidity of the stay 3 is set to be high, there is a problem in that the stay 3 becomes difficult to install and requires adjustment during installation. In addition, in the latter mounting structure, the flat portion 5c of the stay 5
If the bolt holes are made into long holes in the width direction, the slight positional deviation as described above can be easily absorbed, but if a large impact is applied to the bumper 1, the position of the load point will be the same as shown in Figure 1. Frame 4 compared to things
Since the support point is far away, buckling of the frame 4 is likely to occur. If the frame were to buckle, the deformation of the vehicle body would be greater than the absorption of impact energy, which was extremely dangerous from the standpoint of passenger protection.

It is an object of the present invention to provide an automobile bumper mounting structure that eliminates the drawbacks of each of the conventional bumper mounting structures and has both advantages.

That is, in the present invention, the stay member for attaching the bumper to the frame is formed of a total of three parts, the first, second, and third parts, and the bumper is attached to the end surface of the frame by the first and second parts. At the same time, the third part also supports the bumper on the side of the frame, and the mounting gap that may occur between the stay and the side of the frame is removed from the thin wall part provided in the third part. Its basic feature is that it absorbs water by twisting it.

Hereinafter, the present invention will be described in more detail based on illustrated embodiments.

In FIG. 3, 11 is a bumper to be supported or attached to the frame 13 of the vehicle body via a stay member 12, and 14 is a synthetic resin bumper cover that covers the bumper 11 from the outside.

The stay member 12 consists of first, second, and third portions 15, 16, and 17 that are combined so that the overall planar shape forms a Y shape.

The first portion 15 is made by bending a metal plate material having relatively narrow flange edges 15a along both upper and lower side edges into a roughly U-shaped shape, and the tip 1 of the long side portion 15b.
5c is fixed along the inner wall of the bumper 11 with bolts and nuts, and the short side 15d is fixed to the frame 13.
The joint part 15e with the second part 16 is brought into contact with the end face 13a of the second part 16, and its free end side is made to protrude inwardly from the frame 13, and its tip is bent by about 90 degrees toward the bumper 11 side. Form. The first portion 15 is fixed to the end surface 13a of the frame 13 by a bolt 18 through an elongated hole 15f provided in the short side portion 15d so as to be adjustable in position.

On the other hand, in this embodiment, the second portion 16 and the third portion 17 are formed of a plate material 19 having flanges 19a along both upper and lower edges, similar to the first portion 15, and the second portion 16 is formed of the plate material 19. 19 and the first portion 15 toward the bumper 11 side, and the third portion 17 extends from the inner surface 13 of the frame 13 with the joint portion 15e as a boundary.
It is formed as a part extending toward b.

The second portion 16 is a long side portion 1 of the first portion 15.
Attach the tip end 1 to the inner wall of the bumper 11 with bolts and nuts so as to form an appropriate opening angle with respect to the bumper 5a.
6a is fixed, and the joint part 16b formed by bending the rear half into a chevron shape is the joint part 1 of the first part 15.
5e and fix each other by welding.

Further, the third portion 17 has a thin-walled portion 17a formed by cutting out the flange 19a in a small arc shape in a portion near the joint portion 16b of the second portion 16 to form a thin-walled portion 17a that enables elastic deformation of the third portion 17. Part 17
After a, the free end portion 17b is inclined toward the side surface 13b of the frame 13, and the free end portion 17b is fixed with a bolt 20 along the side surface 13b.

It is preferable that brackets 21 and 22 are provided for the first portion 15 and the second portion 16 to connect them to the lower surface 11a of the bumper 11 to connect them.

As described above, when the stay member 12 is composed of the first, second, and third parts 15, 16, and 17, the supporting points are the end face 13a of the frame 13,
It can be two points on the side surface 13b, and the third point can be
The thin wall portion 17a of the portion 17 is provided when a gap occurs between the stay member 12 and the side surface 13b of the frame 13 when the stay member 12 is attached to the frame 13 after the stay member 12 is attached to the bumper 11 in advance. Also, by tightening the bolt 20, displacement of the third portion 17 is allowed, and the end portion 17b
can be brought into close contact with the frame side surface 13b.

In the above embodiment, the first portion 15 is made of one plate material, and the second portion 16 and the third portion 17 are made of a common plate material, but for example, the first portion 15 and the second portion 16 are It goes without saying that the third portion 17 may be formed of a common plate material and the third portion 17 may be formed of a different plate material, and further, the first portion 15 and the third portion 17 may be formed of a common plate material.

As is clear from the above description, the present invention forms the stay member that connects the bumper to the vehicle body frame with a total of three parts, the first, second, and third parts. The third part connects the bumper to the end surface of the frame, and the third part connects the bumper to the side surface of the frame.The two support points prevent the frame from buckling. Install the mounting gap between the third
An object of the present invention is to provide a bumper mounting structure for an automobile, which facilitates position adjustment when mounting the bumper by absorbing the elastic deformation caused by thin-walled portions.

Therefore, according to the present invention, it is possible to provide a bumper mounting structure that eliminates the drawbacks while retaining the advantages of each conventionally known mounting structure.

[Brief explanation of the drawing]

FIGS. 1 and 2 are horizontal cross-sectional views of main parts showing conventional bumper mounting structures, respectively, and FIG. 3 is a horizontal cross-sectional view of main parts showing a bumper mounting structure according to an embodiment of the present invention. 11...Bumper, 12...Stay member, 13...
...Frame, 15...First part, 16...Second part, 17...Third part, 17a...Thin wall part.

Claims (1)

[Claims for Utility Model Registration] An automobile bumper mounting structure in which a bumper is mounted to the frame of a vehicle body via a stay member fixed near the end of the bumper, one end of which is mounted to the bumper and a portion of which is mounted to the end face of the frame. A first part is attached to the bumper in contact with the first part, a second part is attached to the bumper at one end so as to form a certain opening angle with the first part, and a thin part is provided in the middle, and one end is attached to the bumper along the frame surface. A bumper mounting structure for an automobile, characterized in that the stay member is formed by integrally combining a third portion with a third portion.