JPS6219469Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting device for a synthetic resin bumper for an automobile, and more particularly to a support device for supporting both side walls of the vehicle body at the side or corner portions provided at both ends of the bumper body.

As shown in FIG. 1, the synthetic resin bumper is fixed to the tip of a stay 3 attached to the vehicle body 2.
A support member 4 having a U-shaped cross section and extending horizontally and laterally.
The bumper body 5 is fixed by appropriate means such as adhesive or bolts so as to cover the bumper body 5, but both ends of the bumper body 5 are separated from the support member 4 so as to surround both side walls of the body 2. The corner portion 6 is bent, and as disclosed in, for example, Japanese Utility Model Application No. 55-163251, a mounting plate formed integrally with a box-shaped synthetic resin is attached to the body panel on the inner surface of the corner portion 6. They are stacked on top of each other and supported by bolts.

That is, as shown in FIG. 2, a mounting plate 7 having a U-shaped cross section extending in the longitudinal direction is integrally formed with the corner portion 6, and a gap 21 is created between the mounting plate 7 and the inner surface of the corner portion 6 by the side wall 8. The mounting surface 9 is provided with a longitudinally extending slit 10. This slit 10 is cut into one end edge of the mounting plate 9.

Insert the head of the bolt into the gap 21 between the inner surface of the corner portion 6 and the mounting surface 9 through the slit 10, and insert the tip end of the bolt into the bolt hole of the body panel through the slit 10. , the mounting plate 7 is fixed to the body panel by tightening the nuts.

In such a conventional structure, if the nut is tightened too much, excessive force is applied to the mounting plate 7 of the bumper corner portion 6, causing the following problems.

The bumper body 5 is made of polycarbonate 14,
Synthetic resin such as PPO resin is used and is vulnerable to gasoline, thinner, etc., so if gasoline or the like adheres to the corner part 6 under stress, stress cracks will occur and the support part will be damaged. ceases to function.

In particular, if the fuel inlet is located near the support part of the bumper corner part 6, there is a high possibility that the fuel gasoline leaked during refueling will adhere to the support part, and the vehicle will be driven without the fuel completely dissipating. Then,
External stress is applied to the support portion due to vibrations of the vehicle body, and stress cracks are likely to occur in the mounting plate 7 of the corner portion 6.

An object of the present invention is to provide a support device for a synthetic resin bumper that prevents stress cracks caused by adhesion of gasoline or the like.

In order to achieve the above object, the structure of the present invention is such that the bumper corner portions provided at both ends of the bumper body made of synthetic resin are attached to the body panel with bolts, and the surface of the bolt engaging portion of the bumper corner portion is attached to the body panel with bolts. It is coated with a silicone sealant.

According to the present invention, the bolt engagement portion of the bumper corner portion 6 is coated with a silicone sealant, so that the bumper corner portion made of synthetic resin is protected against a decrease in strength due to fuel that may adhere during refueling. Protected from cracking.

To explain the present invention based on an example, as shown in FIG.
Apply a thick enough coating to completely cover the surface.

By configuring the present invention in this way, even if fuel, brake fluid, engine oil, paint, thinner, etc. are attached during refueling, the synthetic resin corner part 6 and the mounting can be fixed with the silicone sealant. Since the entire surface of the plate 7 is protected from gasoline, etc., the mounting plate 7 may be damaged by external forces such as vibrations from the vehicle body.
The occurrence of stress cracks can be completely prevented.

Since the mounting plate 7 is molded integrally with the bumper body 5 from a synthetic resin, the structure is as simple as the conventional one, and there is no need for extra structures such as providing other metal reinforcing members. Since there is no need for this, an excellent effect can be obtained in that the strength of the support portion of the bumper corner portion can be easily maintained at low cost.

[Brief explanation of the drawing]

Fig. 1 is a schematic plan view showing how the synthetic resin bumper is attached to the vehicle body, Fig. 2 is a perspective view showing the inner surface of the bumper corner, and Fig. 3 is a support device for the body panel of the bumper corner according to the present invention. FIG. 5: Bumper body, 6: Corner part, 7: Mounting plate,
9: Mounting surface, 10: Slit, 11: Coating agent, 13: Bolt, 20: Body panel.

Claims (1)

[Scope of utility model registration request] An automobile characterized in that bumper corner portions provided at both ends of a bumper body made of synthetic resin are attached to a body panel with bolts, and the surface of the bolt engagement portion of the bumper corner portion is coated with a silicone sealant. Bumper support device.