JPH04118846U - Shock absorption structure of vehicle bumper - Google Patents

Abstract

(57) [Purpose] To improve the collision energy absorption efficiency during a vehicle collision and to create a resin bumper with a small protrusion design. [Structure] A concave portion 9 having a mortar-shaped cross section is formed on the front end surface of the armature 2 of the resin vehicle bumper 1, and a rear end portion 3a of the collision energy absorber 3 is formed to have a chevron-shaped cross section. 3a into the recessed portion 9.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a shock absorbing structure for a vehicle bumper.

0002

[Conventional technology]

An example of a conventional impact-absorbing structure for a vehicle bumper is the one shown in Figure 5. be.

0003 That is, in this figure, 1 is a resin vehicle bumper that extends in the width direction of the vehicle. The front side of the armature 2, which has a cross-section of a box, is made of a foamed resin material. An absorber 3 is installed, and this collision energy absorber 3 is covered with a resin facer 4. has been done. The armature 2 is attached to the vehicle body frame via a stay fixed in place. is combined with

0004 The upper and lower edges of the fascia 4 are fitted with bolts 5 and 5 on the upper and lower surfaces of the armature 2, respectively. It is attached with a nut 6. 7 is a retainer welded to the bolt 5. When a vehicle collides, the facia 4 deforms and absorbs the collision energy, as shown by the chain line. - The absorber 3 is also compressed and the collision energy is absorbed.

[0005] Note that a technique similar to the above technique is disclosed in, for example, Japanese Utility Model Application Publication No. 105856/1983. It is shown.

[0006]

[Problem that the idea aims to solve]

However, in such a conventional structure, the collision energy at the time of a collision is Since the compression direction of the energy absorber 3 is only in the front-rear direction, the collision energy is There is a problem that the absorber 3 swells up and down, which ultimately deteriorates the energy absorption efficiency. Ru.

[0007] The present invention was developed with a focus on these conventional problems, and it We provide a shock absorption structure for vehicle bumpers that improves energy absorption efficiency. The porpose is to do.

[0008]

[Means to solve the problem]

To achieve this purpose, the present invention provides an armature coupled to a vehicle body member. A collision energy absorber is installed in front of the In the vehicle bumper covered with a armature, the front end surface of the armature has a roughened cross section. While a bowl-shaped recess is formed, the rear end of the collision energy absorber has a chevron-shaped cross section. and this chevron-shaped rear end portion is engaged with the recessed portion.

[0009]

[Effect]

In the event of a vehicle collision, the fascia deforms due to the impact energy and absorbs the impact energy. The collision energy is also absorbed by compressing the energy absorber, but in this case, the collision energy The energy absorber compresses in the front and back direction, and its chevron-shaped rear end is bent by the armature. Because it engages with the bowl-shaped recess and its upper and lower surfaces engage on slopes, it is also compressed in the vertical direction. , volumetric contraction progresses efficiently, and collision energy is efficiently absorbed.

0010

【Example】

An embodiment of the present invention will be described below with reference to the drawings, in which the same parts as the conventional ones are given the same reference numerals. I will explain.

[0011] In Figures 1 and 2, 1 is a resin vehicle bumper that extends in the width direction of the vehicle. A collision energy absorbing material made of foamed resin is placed on the front side of the armature 2 with a box cross section. A collection body 3 is installed, and this collision energy absorber 3 is covered with a resin fascia 4. It is. The armature 2 is attached to the vehicle body frame via a stay 8 fixed in place. (not shown).

0012 The upper and lower edges of the fascia 4 are fitted with bolts 5 and 5 on the upper and lower surfaces of the armature 2, respectively. It is attached with a nut 6. 7 is a retainer welded to the bolt 5.

[0013] The above configuration is the same as before. In such a configuration, the front end surface of the armature 2 has a recess with a mortar-shaped cross section. portion 9 is formed, while the rear end portion 3a of the collision energy absorber 3 has a ridge in cross section. The chevron-shaped rear end 3 a engages with the recess 9 .

[0014] A portion corresponding to the bottom of the recessed portion 9 in the hollow interior of the armature 2 Reinforcing ribs 10, 10 are provided at the ends. Also, this armature 2 is made of aluminum It is made by extrusion molding of materials such as aluminum.

[0015] With this configuration, as shown in Fig. 3, in the event of a vehicle collision, the collision energy is -F deforms the fascia 4, compresses the collision energy absorber 3, and absorbs the collision energy. energy is absorbed, but in this case the collision energy absorber 3 compresses in the front and rear direction. At the same time, its chevron-shaped rear end 3a engages with the mortar-shaped recess 9 of the armature 2, and its Since the upper and lower surfaces engage in a so-called inclined plane, it is also compressed in the vertical direction, and the volume is efficiently increased. Contraction progresses, and collision energy is efficiently absorbed.

[0016] As a result of this efficient absorption of collision energy, the bumper stroke amount This also makes it possible to create a bumper with a small protrusion design. .

[0017]

[Effect of the idea]

As explained above, according to the present invention, the armor coupled to the vehicle body member A collision energy absorber is installed in front of the char, and the collision energy absorber is attached to the front of the char. In a vehicle bumper coated with Eisha, the front end surface of the armature is coated with While forming a concave portion having a mortar shape in cross section, the rear end portion of the collision energy absorber is formed in a cross section. It is formed into a chevron shape, and the rear end of this chevron shape is engaged with the recessed part, so that it will not be damaged in the event of a vehicle collision. The bumper has a small protrusion design and can efficiently absorb collision energy. The effect is that it becomes possible to create a template.

[Brief explanation of drawings]

FIG. 1 is a sectional view corresponding to FIG. 5 showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of essential parts of the bumper shown in FIG. 1;

FIG. 3 is an explanatory diagram of the action.

FIG. 4 is a perspective view of the vehicle.

FIG. 5 is a cross-sectional view taken along line A-A in FIG. 4 showing a conventional example.

[Explanation of symbols]

1 Vehicle bumper 2 Armature 3 Collision energy absorber 3a Rear end of chevron 4 Hueisha 9 Mortar-shaped recess

Claims (1)

[Scope of utility model registration request] 1. A vehicle bumper comprising a collision energy absorber installed on the front surface of an armature coupled to a vehicle body member, and the collision energy absorber covered with a fascia, wherein the front end surface of the armature has a mortar-shaped cross section. 1. A shock absorbing structure for a bumper for a vehicle, characterized in that a rear end portion of the collision energy absorber is formed to have a chevron-shaped cross section, and the chevron-shaped rear end portion is engaged with the recess portion.