JPH11235960A - Shock absorber for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve shock absorbing capacity by installing a shock absorbing member by filling a silicone gel material in a resilient tube, on bumpers of an automobile. SOLUTION: A shock absorbing member 3 is constituted by filling/sealing a silicone gel material 2 in a slender tube 1 made of a resilent material such as rubber and plastic. A belt-like flange 4 corresponding to the length of bumpers of an automobile is installed on the lengthwise directional side surface of the shock absorbing member 3. A pressure sensitive adhesive double coated tape is stuck to the surface of the flange 4 so that the shock absorbing member 3 is installed on the front/rear bumpers of the automobile through this. In a shock absorber having this constitution, shock absorbing capacity imparted to the automobile can be improved coupled with the bumpers by installing the shock absorbing member 3 by filling the silicone gel material 2 having large shock absorbing capacity, small temperature dependency and a stable property on physical properties such as cold resistance, heat resistance, weatherability and satbility in the tube 1, on the bumpers.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile shock absorbing device.

[0002]

2. Description of the Related Art Conventionally, it is well-known that a bumper is provided on an automobile as a countermeasure against impact upon a rear-end collision of the automobile, and an impact absorbing member made of a rigid resin foam such as rigid urethane foam is provided around the automobile. It is fixed and used.

[0003]

The bumper has a small shock absorbing capacity, and may impair a driver or a passenger even if the vehicle collides at a speed of 40 km / h or less. Further, in the hitherto known automobile shock absorber using the shock absorber and the bumper together, the shock absorber is completely fixed to the automobile, and replacement requires a lot of man-hours. The present invention has been made in view of the above-mentioned problems, and proposes a shock absorbing device for a vehicle that can be easily replaced and has improved shock absorbing ability.

[0004]

An impact absorbing member in which a flexible tube filled with a silicone gel material is mounted on a bumper of an automobile. The shock absorbing member and the bumper combine to effectively absorb the shock.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1 (A) is a front view of the shock absorbing member of the present invention, FIG. 1 (B) is a cross section taken along the line AA ′ of FIG. 1 (A), and FIG. The side attached to the bumper is shown.

Hereinafter, a shock absorbing member and a shock absorbing device of the present invention will be described with reference to FIGS. 1 and 2. As shown in FIG. 1, a shock absorbing member 3 is formed by filling and sealing a silicone gel material 2 in an elongated tube 1 made of an elastic material such as rubber or plastic. Then, a band-like flange 4 corresponding to the length of the bumper of the automobile is mounted on the side surface of the shock absorbing member 3 in the longitudinal direction. The flange 4 is attached to the tube 1 by separately manufacturing a thin metal member made of the same material as that of the tube 1 or separately, and constitutes a member to be attached to the bumper. Further, an impact absorbing member 3 in which the tube 1 is filled with a silicone gel material 2
The cross-sectional shape can be configured to be not only a substantially circular shape as shown in the figure, but also an elliptical shape or a semicircular shape.

Further, a double-sided adhesive tape (not shown) is attached to the surface of the flange 4 for mounting the shock absorbing member 3 on the bumper 5. When the impact absorbing member is mounted on the bumper without using the double-sided adhesive tape, screw holes are formed in the flange. FIG. 2 shows an example in which the shock absorbing member 3 is attached to the front and rear surfaces of a bumper 5 of an automobile 6.

Next, the silicone gel material to be filled in the tube will be described. As the silicone gel material, a commercially available silicone gel material is used. As the silicone gel material as the shock absorbing material, α gel or β gel manufactured by Siegel is used. α-gel is a silicone-based gel-like substance with a penetration (JISK2530-1976-50g weight) of 50-
200 materials. β-gel is obtained by adding a certain kind of hollow filler to the α-gel, and has a high energy absorption rate and is suitable for shock absorption.

In the present invention, the silicone gel material is used as a shock absorbing material because the silicone gel material has a large shock absorbing capacity, a small temperature dependency, and cold resistance.
This is because they have stable properties with respect to physical properties such as heat resistance, weather resistance, and safety.

[0010]

According to the present invention, since the shock absorbing device for a vehicle is constructed by mounting a shock absorbing member filled with a silicone gel material in a tube on a bumper of the vehicle, the shock absorbing capability of the vehicle is improved in combination with the bumper. .

[Brief description of the drawings]

FIG. 1 is a plan view and a sectional view of a shock absorbing member of the present invention.

FIG. 2 is a side view in which the shock absorbing member of the present invention is mounted on a bumper of an automobile.

[Explanation of symbols]

1. Tube 2. Silicone gel material 3. Shock absorbing member 4. Flange 5. Bumper

Claims (3)

[Claims] 1. An automobile shock absorbing device comprising an automobile bumper and an impact absorbing member formed by filling an elastic tube with a silicone gel material. 2. The automobile impact absorbing device according to claim 1, wherein a belt-like flange is attached to said impact absorbing member. 3. The impact absorbing device for an automobile according to claim 2, wherein a double-sided adhesive tape for adhering the impact absorbing member to a bumper of the automobile is provided on the surface of the band-shaped flange.