JPS6027060Y2 - Vehicle bumper structure - Google Patents

Description

[Detailed description of the invention] The present invention is an improved vehicle bumper structure that is less prone to bending deformation. The present invention relates to a technique for preventing an increase in the weight of a vehicle.

In the conventional vehicle bumper structure, in order to minimize local deformation of the bumper when an object collides between the left and right bumper support parts, as shown in FIG. A pair of protrusions 2 called overriders are provided at a position closer to the center than a shock absorber 4 attached to the vehicle body.

Like the side bumpers 3 disposed at both ends of the bumper 1, the protrusions 2 are made of an elastic material such as rubber or resin, and are designed to elastically receive objects that collide with force. This prevents the metal part 1 from deforming.

However, in a bumper structure adopting such a structure, as shown in FIG. Since the bumper 1 is mounted in a protruding manner, the moment acting on the bumper 1 when it collides with a wall is as shown in FIG. 1.

As is clear from this moment diagram, when a vehicle collides with a wall, even if the impact from the collision is relatively small, an excessive moment is applied to the bumper 1 when the protrusion 2 is attached. had the inconvenience of causing large bending deformation in that part.

The present invention was developed in light of this fact, and its purpose is to provide projections on the front of the bumper of the vehicle at the shock absorber position and the position inside the shock absorber, and to cover these projections with a bumper guard to prevent the vehicle from running while the vehicle is running. To provide a stiffened bumper structure so that when a vehicle collides with a wall, the impact force caused by the collision can be directly received by a shock absorber.

The invention will be explained in more detail with reference to the accompanying drawings.

3 and 4 are a plan view and a sectional view partially showing an embodiment of the present invention.

The bumper structure in this embodiment includes a pair of shock absorbers 14 that are attached to and protrude from the vehicle body, and a bumper body that is attached to the tips of these shock absorbers 14.

On the front surface of the bumper body 11, a pair of elastic protrusions 12 are provided at a position closer to the center of the vehicle body than the shock absorber 14 position, and a pair of elastic protrusions 13 are also attached at the shock absorber 14 position. It's coming.

It is preferable that the elastic protrusions 12 and 13 are made of a material such as rubber or resin that is relatively easy to mold and is itself suitable for absorbing impact.

The elastic protrusions 12 and 13 protrude from the front surface of the bumper body 11 by approximately the same length so that the impact force when the vehicle collides with a wall can be dispersed and stopped between the two.

Also, elastic projections 12 are provided on both sides of the front side of the bumper body 11.
A bumper guard 15 is attached to cover the bumper body 13 to protect the bumper body 11 from damage and deformation when a light impact is applied to the vehicle.

Like the elastic protrusions 12.13, this patch guard 15 is preferably made of an elastic material such as rubber or resin, and as shown in FIG.
It covers 13.

A side bumper 16 is integrally formed on the outside of the bumper 15.

In the bumper structure having the above configuration, if a vehicle collides with a wall S etc., as shown in FIG. By transmitting the load, it is elastically displaced by the length δ.

At this time, the load from the bumper guard 15 is shared and supported by both elastic protrusions 12 and 13, and the elastic protrusion 1
Since the load acting on the bumper guard 15 is stopped from being directly received by the vehicle body via the shock absorber 14, the deformation of the bumper body 11 does not proceed beyond the displacement position δ of the bumper guard 15, and can be kept within the elastic deformation range.

Therefore, when the vehicle is pulled away from the wall S, the bumper body 11 can return to its pre-collision state.

Since the elastic protrusions 12.13 are made of an elastic material, the elastic protrusions 12.13 themselves can also soften the shock at the time of a vehicle collision.

Furthermore, by making the elastic protrusions 12 and 13 from elastic materials having different hardnesses, the proportion of the load received by these two elastic protrusions 12 and 13 can be varied.

Furthermore, since these elastic protrusions 12.13 are covered with the bumper guard 15, the bumper guard 15 can effectively prevent deformation of the bumper even when an impact object hits directly between the elastic members 12.13, and the elastic protrusions 12. .13 is not exposed and protrudes in front of the bumper body 11, and the bumper structure can have a simple external configuration.

As explained above, according to the present invention, elastic protrusions are provided at the shock absorber position of the bumper body and at positions inside the bumper body, and these protrusions are covered with the bumper guard, so that impact energy is effectively absorbed and the bumper body We were able to create a bumper structure that can absorb the load from a vehicle collision through only elastic deformation.

Furthermore, by covering the elastic protrusions with the bumper guard, the unsightly appearance caused by numerous protrusions attached to the front surface of the bumper body is eliminated, and the appearance of the bumper structure can be simplified.

[Brief explanation of drawings]

Fig. 1 shows an example of a conventional bumper structure, and Fig. 1 shows a partial plan view of such a conventional example, and Fig. 1 shows a diagram of the bending moment that occurs when such a bumper structure collides with a wall. It is. FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1. FIG. 3 is a partial cross-sectional view of a bumper structure according to an embodiment of the present invention. FIG. 4 is a sectional view taken along line IV-IV in FIG. 3. FIG. 5 is a diagram illustrating the deformation state of the server structure of the present invention when it collides with a wall. Explanation of symbols, 11... Bamba body, 12.13
...Elastic protrusion, 14...Shock absorber, 15...Bumba guard, 16...
...Side Pamba.

Claims (1)

[Scope of utility model registration request] A bumper body 11 is attached to the vehicle body via a pair of shock absorbers 14, and elastic protrusions 12 are attached to the front surface of the bumper body 11 at the positions of the shock absorbers 14 and at positions closer to the center than the shock absorbers 14, respectively. 13 and a bumper guard 15 that covers these elastic protrusions 12 and 13.