KR100236318B1 - Bumper for a vehicle - Google Patents

Abstract

The present invention discloses a bumper of a motor vehicle. The present invention disclosed is a bumper facer (10) forming an outer surface; A reinforcement 20 connected to the inner side of the bumper facer 10 and fixed to the vehicle body frame; And in the bumper of the vehicle consisting of a foam 30 filled between the reinforcement 20 and the bumper facer 10, a buffer cylinder 40 is installed between the bumper facer 10 and the reinforcement 20 It is characterized by.

Description

Bumper of car

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bumper of a motor vehicle, and more particularly, to a bumper having improved a shock absorbing function of a bumper fascia forming an outer surface of a bumper.

In general, the bumper of the automobile is a reinforcement fixed to the vehicle body frame with the stay 4 fixed to the inside of the bumper pacer 1 and the bumper pacer 1 forming the outer surface, as shown in FIG. (2) and a foam 3 of foamable material filled between the reinforcing material 1 and the bumper facer 1.

With the above configuration, the impact caused by the collision accident is alleviated while the bumper phaser 1 is deformed, absorbed by the foam 3 again, and again by the deformation of the reinforcing material 2.

However, the conventional bumper having the above-described configuration, but the impact mitigation operation is made over three times, in view of the situation that various regulations on the safety of the occupants in recent years, the need to increase the impact mitigation effect more Was on the rise.

Accordingly, an object of the present invention is to provide a bumper for an automobile that can more effectively progress a shock absorbing operation in a bumper, thereby significantly improving the shock absorbing effect.

1 is an exploded perspective view showing a conventional bumper.

2 is an exploded perspective view showing a bumper according to the present invention.

FIG. 3 is a section III of FIG. 2 showing the outline of a buffer cylinder, which is an essential part of the present invention.

4 is a cross-sectional view showing the internal structure of the buffer cylinder taken along the line IV-IV of FIG.

* Explanation of symbols for main parts of the drawings

10: bumper facer 20: reinforcement

30: foam 40: buffer cylinder

50: buffer cap 11: protrusion

41: large diameter cylinder 42: medium diameter cylinder

43: small diameter cylinder

In order to achieve the above object, the present invention, a bumper facer forming an outer surface, the reinforcement is connected to the inside of the bumper facer fixed to the vehicle body frame; And a foam filled between the reinforcing material and the bumper facer, wherein the cushioning cylinder is installed between the bumper facer and the reinforcing material.

Preferably, the buffer cylinder is a large diameter cylinder fixed to the inner surface of the bumper facer; A medium diameter cylinder movably inserted into said large diameter cylinder; And a small diameter cylinder that is movably fitted to the middle diameter cylinder and is fixed to the reinforcing material.

In addition, both sides of the bumper facer is formed with protrusions facing the front of the vehicle, characterized in that the buffer cap is installed on the outer surface of each of the protrusions.

According to the above-described configuration of the present invention, the shock absorbing effect is greatly improved by performing the buffering operation three times only with the shock absorbing cylinder provided between the bumper facer and the reinforcing material, and also the shock absorbing operation proceeding first at the shock absorbing cap.

EXAMPLE

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is an exploded perspective view showing a bumper according to the present invention, FIG. 3 is a section III of FIG. 2 showing the outline of a shock absorbing cylinder which is a main part of the present invention, and FIG. 4 is along the IV-IV line of FIG. It is sectional drawing which shows the internal structure of the shock absorbing cylinder taken.

For reference, in the description of the configuration of the present embodiment, the same parts as in the prior art described at the beginning of the specification are omitted and repeated descriptions are mainly described in order to avoid duplication of description. use.

As shown in FIG. 2, protrusions 11 facing the front of the vehicle are formed at both corners of the bumper facer 10, that is, the portions in contact with other vehicles or objects. A buffer cap 50 having a shape corresponding to that shape is covered and fixed to the outer surface. Since the buffer cap 50 is installed on the protrusion 11 to increase the buffering effect of the bumper phaser 10, the buffer cap 50 is made of the same material and color as the bumper phaser 10.

Meanwhile, the buffer cylinder 40 is provided in the foam 30 filled between the bumper facer 10 and the reinforcement 20. The buffer cylinder 40 is a triple type consisting of three large diameter cylinders 41, a medium diameter cylinder 42, and a small diameter cylinder 43, as shown in detail in FIGS. 3 and 4. That is, one end of the large diameter cylinder 41 is fixed to the bumper facer 10 and one end of the medium diameter cylinder 42 is movable to the other end, and the other end of the medium diameter cylinder 42 is fixed to the reinforcing material 20. The small diameter cylinder 43 is fitted to be movable.

Here, reference numeral 4 is a stay for fixing the reinforcing material 20 to the vehicle body frame.

Hereinafter, the operation of the present embodiment configured as described above will be described in detail.

First, when the front or rear both edges hit another vehicle or an object while rotating, the shock is first received by the buffer cap 50 before the bumper facer 10.

Therefore, in the case of a light impact, only the shock absorbing cap 50 is deformed to mitigate the impact. Therefore, since the deformation does not occur in the bumper facer 10, the entire bumper facer 10 is not required to be replaced at a nearby workshop. Only the buffer cap 50 needs to be replaced.

If a collision accident during rotation or impact due to a front or rear collision is large, the shock absorbing cap 50 is deformed first, and then the bumper facer 10 is deformed while the protrusion 11 is deformed inward. This will cause two shocks. Then, the impact energy is absorbed by the foam 30, and at the same time, the shock absorbing operation is performed three times by the buffer cylinder 40.

That is, while the impact energy of the bumper phaser 10 is alleviated by the large diameter cylinder 41, and then the middle diameter cylinder 42 is inserted into the large diameter cylinder 41 which is pushed together with the bumper phaser 10, As the bumper facer 10 comes into contact with the middle diameter cylinder 42, the impact energy is alleviated again. Finally, the small diameter cylinder 43 is inserted into the large diameter and the medium diameter cylinders 41 and 42, and the impact energy is once again increased. The shock energy is mitigated over three times.

Since the impact energy mitigated six times is alleviated once again by the reinforcing material 20, the impact mitigation operation proceeds seven times in total.

As described above, according to the present invention, the impact energy is alleviated by the buffer cap 50 and the impact energy is alleviated three times by the shock absorbing cylinder 40, so that the shock alleviating effect is greatly increased, and thus the occupant's safety. This is improved.

On the other hand, the present invention is not limited to the above-described specific preferred embodiments, and various changes can be made by those skilled in the art without departing from the gist of the invention claimed in the claims. will be.

Claims (2)

A bumper facer forming an outer surface and a reinforcement connected to an inner side of the bumper facer and fixed to a vehicle body frame; And a foam filled between the reinforcement and the bumper facer, wherein a cushioning cylinder is installed between the bumper facer and the reinforcement, and protrusions facing the front of the vehicle at both corners of the bumper facer. The bumper of the vehicle, characterized in that the buffer cap is installed on the outer surface of each projection. A bumper facer forming an outer surface and a reinforcement connected to an inner side of the bumper facer and fixed to a vehicle body frame; And a foam filled between the reinforcement and the bumper facer, wherein the front facing protrusions are formed at both corners of the bumper facer, and cushioning caps are provided on the outer surface of each of the protrusions. Bumper of the car, characterized in that.

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