JPH0112995Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a mounting structure for a corner portion of a resin bumper for an automobile.

[Prior Art] As shown in FIG. 1, a resin bumper 2 integrally includes a central portion 10 that covers the front and rear end wall surfaces of the vehicle body, and corner portions 9 that cover the side wall surfaces of the vehicle body. A pair of upper and lower reinforcing ribs are provided on the inner surface of the bumper, and the central portion 10
At the corner part 9, the reinforcing ribs are connected to a pair of left and right back bars 11 fixed to a wall of the car body, for example, a side member, and at the corner part 9, the reinforcing ribs are connected by bolts to a bracket with a U-shaped end face fixed to the side wall panel of the car body. be done.

However, resin bumpers expand or contract due to seasonal temperature changes, so when the resin bumper as a whole contracts in the longitudinal direction, the corner portion 9 is pulled in the longitudinal direction of the vehicle body (forward in the case of a front bumper). As shown by the broken line in FIG. 1, the corner portion 9 rotates around the bolt 16, causing the end to separate from the side wall panel of the vehicle body, resulting in a significant loss of appearance.

For example, as disclosed in Japanese Utility Model Application Publication No. 56-8553, the reinforcing ribs at the corners are connected to the side wall panels of the car body by links, and when the corner parts are deformed from the outside, the corner parts are held in a predetermined position relative to the car body. A similar phenomenon occurs with resin bumpers that can move freely within a range. In this case, if the ends of the links are connected with a plurality of bolts, the expansion of the corner portions can be suppressed, but the number of parts increases and it takes time to assemble.

[Problems to be solved by the invention] In view of the above-mentioned problems, the purpose of the invention is to solve the problem by using a small number of bolts, even if the resin bumper contracts due to temperature changes.
To provide a mounting structure for a corner part of a resin bumper, which can be assembled so that the end of the corner part does not spread outward from a side wall panel of a vehicle body.

[Means for Solving the Problems] In order to achieve the above object, the structure of the present invention is to install resin bumpers on the upper and lower horizontal mounting plate surfaces of a bracket having a U-shaped cross section fixed to the side wall panel of the vehicle body. A pair of upper and lower horizontal reinforcing ribs protruding from the inner surface of the corner portion are overlapped, and the side edges of the tongue pieces in the vertical direction protruding from the edge of the mounting plate surface on the vehicle body end wall side touch the edge of the reinforcing ribs. They are connected with bolts so that they touch each other.

[Function] According to the present invention, the reinforcing ribs at the corners are overlapped and connected to the bracket of the side wall panel of the vehicle body by vertical bolts, and at the same time, the reinforcing ribs are attached to the tongue pieces 19 provided at the edge of the bracket. edge 4a of
are in contact with each other, and rotation about the bolt is prevented. Therefore, deformation due to temperature change that is unfavorable in terms of appearance, such as the end wall side of the vehicle body being closer to the side wall panel than the bolt at the corner portion, and the end side being separated from the side wall panel, is prevented.

[Embodiment of the invention] The invention will be explained based on an embodiment of the front bumper. As shown in FIGS. 2 and 3, the corner portion 9 of the resin bumper has a horizontal wall portion 3 on the upper edge of a vertical wall portion 8 that is approximately parallel to the side wall panel of the vehicle body, and a substantially horizontal wall portion 5 on the lower edge. A pair of upper and lower horizontal reinforcing ribs 4 are provided on the inner surface of the vertical wall portion 8, which are formed integrally with each other. To support the corner portion 9 to the vehicle body, a bracket 12 is secured to a side wall panel 21 (FIG. 4) of the vehicle body.

The bracket 12 has a substantially U-shaped cross section, and has an intermediate wall portion 14 overlaid on the side wall panel 21 of the vehicle body.
and horizontal mounting plate surfaces 13 located at both upper and lower ends of the intermediate wall portion 14 and overlaid on the reinforcing ribs 4, respectively, and bolts 17 connected to the intermediate wall portion 14 by welding are attached to the vehicle body. It is inserted into a hole in the side wall panel 21 of and fastened with a nut. The reinforcing ribs 4 of the corner portions 9 are superimposed on each mounting plate surface 13, and the bolts 6 are inserted into the through holes provided in the mounting plate surface 13 and the notches 7 provided at the edges of the reinforcing ribs 4, and the nuts are tightened. It is tightened and fixed. An elongated hole 15 is provided in the intermediate wall portion 14 for weight reduction, and a flange 20 is formed by bending both front and rear edges for reinforcement.

According to the present invention, a vertical tongue piece is provided on the edge of the mounting plate surface 13 on the side of the vehicle body end wall (the front edge in the case of a front bumper), which abuts on the edge 4a of the reinforcing rib and plays the role of a stopper. 19 are provided. That is, as shown in FIG. 3, a tongue piece 19 is provided that extends downward from the front edge of the mounting plate surface 13. Preferably, the tongue piece 19 is constructed integrally with the aforementioned flange 20.
However, the width of the tongue piece 19 is wider than the flange 20 by the dimension t (FIG. 4);
The side edges of the reinforcing ribs 4 are brought into contact with the end edges 4a of the reinforcing ribs 4. The dimension t is predetermined in consideration of the shape of the vehicle body side wall panel having a complicated curved surface and the horizontal wall portions 3 and 5 of the corner portion 9.

In the illustrated embodiment, the tongue piece 19 is provided only on the front edge of the upper mounting plate surface 13, but it is preferable to provide it on both the front and rear edges of the upper and lower mounting plate surfaces 13. In this case, the tongue piece on the lower mounting plate surface 13 is
It projects upward from the front and rear edges of the mounting plate surface 13.

As described above, in the present invention, for the bracket 12 having a U-shaped cross section that is superimposed and fixed to the side wall panel of the vehicle body, the side edge of the tongue piece 19 in the vertical direction protruding from the front edge of the mounting plate surface 13 is attached to the corner portion 9. Reinforcement rib 4
Since the resin bumper is in contact with the end edge 4a of the bumper as a whole, when the resin bumper as a whole contracts due to temperature change, the part of the corner part 9 on the opposite side of the end from the part supported by the bolt on the bracket 12 will be moved toward the vehicle body side. Even if the tongue piece 19 is pulled against the edge 4a of the reinforcing rib 4, twisting or rotation of the corner part 9 about the bolt 6 is suppressed, so that the end of the corner part 9 does not spread outward from the side wall panel of the vehicle body and is always maintained in contact with the side wall panel of the vehicle body.

Note that if the bolt 6 is tightened in advance so that the end edge 4a of the reinforcing rib 4 of the corner part 9 is pressed strongly against the tongue piece 19 of the bracket 12, and the bolt 6 is inserted into the innermost part of the notch 7, the corner part The end of the bumper 9 is brought into close contact with the side wall panel of the vehicle body, and expansion of the end due to shrinkage due to temperature changes of the resin bumper 2 after installation is further suppressed.

The above explained the case of the front bumper, but
The rear bumper can also be constructed symmetrically.

[Effects of the invention] As described above, the present invention has a pair of upper and lower horizontal mounting plates protruding from the inner surface of the corner portion of the resin bumper on a pair of upper and lower horizontal mounting plates of a bracket having a U-shaped cross section fixed to the side wall panel of the vehicle body. Overlapping horizontal reinforcing ribs,
In addition, since the edges of the tongue pieces in the vertical direction protruding from the edge of the mounting plate surface on the vehicle body end wall side are connected with bolts so that they come into contact with the edges of the reinforcing ribs, the reinforcing ribs at the corners are attached to the mounting plate of the bracket. When superimposed on the surfaces and connected with bolts, the edges of the reinforcing ribs come into contact with the tongues of the bracket, preventing rotation of the corner portions about the bolts.

Rotation around the corner bolt is prevented, so the side opposite the corner end (front side in the case of a front bumper) from the corner bolt due to temperature changes
is pressed against the side wall panel, while the deformation of the terminal side away from the vehicle side wall panel is suppressed.
Good appearance is maintained.

Since the tongue can be molded integrally with the bracket, it is extremely simple to manufacture, the number of bolts connecting the corner to the bracket is minimized, and assembly is simple.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing a schematic configuration of a conventional resin bumper corner mounting structure, Fig. 2 is a perspective view of a resin bumper corner mounting structure according to the present invention, and Fig. 3 shows the main parts of the same. FIG. 4 is an enlarged perspective view and a rear sectional view of the same. 2: Resin bumper, 4: Reinforcement rib, 4a: Edge,
6: Bolt, 8: Vertical wall, 12: Bracket,
13: Mounting plate surface, 14: Intermediate wall part, 19: Tongue piece,
21: Side wall panel.

Claims (1)

[Scope of utility model registration request] A pair of upper and lower horizontal reinforcing ribs protruding from the inner surface of the corners of the resin bumper are superimposed on a pair of upper and lower horizontal mounting plate surfaces of a bracket with a U-shaped cross section fixed to a side wall panel of the vehicle body, and the mounting plate surface is A mounting structure for a corner portion of a resin bumper in which the side edge of a tongue piece in the vertical direction protruding from the end edge of a vehicle body end wall is connected with a bolt so as to abut the edge of a reinforcing rib.