KR20080093630A

KR20080093630A - Impact absorption device for car

Info

Publication number: KR20080093630A
Application number: KR1020070037595A
Authority: KR
Inventors: 황석호
Original assignee: 현대모비스 주식회사
Priority date: 2007-04-17
Filing date: 2007-04-17
Publication date: 2008-10-22

Abstract

The present invention relates to a shock absorber for automobiles, comprising: a bumper beam; A bumper cover covering a bumper beam; And a shock absorber embedded in the bumper cover and having a honeycomb shape.

The shock absorber for automobiles according to the present invention can satisfy both pedestrians and low speed collisions, and facilitates manufacturing and production.

Description

Shock Absorber for Automobiles {IMPACT ABSORPTION DEVICE FOR CAR}

1 is a view schematically showing a conventional bumper device.

2 is a view schematically showing a shock absorber according to an embodiment of the present invention.

Figure 3 is a schematic cross-sectional view of the bumper device provided with a shock absorbing material according to an embodiment of the present invention.

4 is a view schematically showing a state in which the primary shock is applied to the bumper device of FIG. 3.

FIG. 5 is a view schematically illustrating a state in which a secondary shock is applied to the bumper device of FIG. 3.

* Description of the symbols for the main parts of the drawings *

21: bumper beam 22: bumper cover

30: shock absorbing material 31: bulkhead

32: low rigid sound absorption unit 33: high rigid sound absorption unit

The present invention relates to a shock absorbing device, and more particularly, to a shock absorbing device for a vehicle to protect the pedestrian during the collision with the pedestrian so that the shock absorption is smoothly performed in the low-speed collision.

In general, shock absorbers such as energy absorbers used in automobiles absorb collision energy to prevent breakage of the vehicle.

1 is a view schematically showing a conventional bumper device.

Referring to FIG. 1, the bumper device 10 mounted on an automobile includes an energy absorber 13 between the bumper cover 11 and the bumper back beam 12.

The energy absorber 13 absorbs the collision energy generated during the collision of the vehicle, and prevents the bumper cover 11 from being excited. Most of these energy absorbers 13 are manufactured by foam molding, and are manufactured in one-piece or left-right separation type in order to improve performance against a collision of a vehicle.

In addition, the energy absorber 13 is designed in such a manner as to improve the performance against collision by changing the foaming ratio, that is, securing space through high magnification to low magnification. That is, the foaming ratio of the energy absorber 13 is increased to protect the pedestrians, and the foaming ratio of the energy absorber 13 is reduced to cope with the low speed collision.

However, there is a problem that it is difficult to calculate the foaming ratio of the energy absorber 13 to protect the pedestrian and to cope with the low speed collision.

In addition, the polypropylene foam material, which is a main material of the energy absorber 13, which is generally used, has a limited foaming ratio. Therefore, when it is impossible to grow by the foaming ratio, the space of the energy absorber must be increased, and when the space of the energy absorber is increased, the bumper There is a problem that the protrusion of the self is increased causing a deterioration of the appearance of the vehicle.

Therefore, there is a need for improvement.

The present invention has been made to solve the above problems, and an object thereof is to provide a shock absorber for automobiles to improve the performance of the bumper by changing the shape and material.

In order to achieve the above object, the present invention provides a bumper beam; A bumper cover covering the bumper beam; And a shock absorber embedded in the bumper cover and having a honeycomb shape.

The shock absorbing material is a partition wall; A low rigid absorbent portion having a honeycomb shape projecting to one side of the partition wall; And a high rigid absorbent portion protruding to the other side of the partition wall, having a honeycomb shape, and having a greater strength than the low rigid absorbent portion.

The shock absorbing material is characterized in that the injection molding of a plastic material.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a shock absorber for a vehicle having a shock absorber according to the present invention.

In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom.

Therefore, definitions of these terms should be made based on the contents throughout the specification.

2 is a view schematically showing a shock absorber according to an embodiment of the present invention, Figure 3 is a schematic cross-sectional view of the bumper device having a shock absorber according to an embodiment of the present invention.

4 is a view schematically showing a state in which the primary shock is applied to the bumper device of FIG. 3, and FIG. 5 is a view schematically showing a state in which the secondary shock is applied to the bumper device of FIG. 3.

2 and 3, the bumper device 20 of the vehicle is provided on the front of the vehicle body. The bumper device 20 includes a bumper beam 21 mounted on the front of the vehicle body, a bumper cover 22 covering the front portion of the bumper beam 21, and a shock absorber 30 embedded in the bumper cover 22. It includes.

Although not shown, the bumper beam 21 is coupled to the vehicle body by a conventional coupling method. The shock absorber 30 has a honeycomb shape to smoothly absorb external shocks.

The shock absorbing material 30 according to the exemplary embodiment includes a partition 31, a low rigid absorbent 32, and a high rigid absorbent 33. The low rigid absorption part 32 protruding from one side of the partition 31 and the high rigid absorption part 33 protruding from the other side have a honeycomb shape.

The shock absorbing material 30 is designed to be a high rigid absorbent portion 33 so that the strength is greater than the low rigid absorbent portion (32). To this end, the high rigidity absorbing part 33 may use a material having a greater strength than the low rigidity absorbing part 32. On the other hand, it is easy to design the shock absorbing material 30 is integrally molded. When the shock absorber 30 is integrally designed as described above, it is preferable that the impact absorbing material 30 is injection molded from a plastic material, and the high rigidity absorbing part 33 is designed to have a thicker thickness than the low rigidity absorbing part 32.

Referring to the operation of the shock absorber for a vehicle according to an embodiment of the present invention having the structure as described above are as follows.

First, referring to FIG. 4, when the bumper device 20 according to an embodiment of the present invention collides with a pedestrian, the bumper cover 22 absorbs low rigidity due to the bumper device 20 colliding with the pedestrian. The part 32 is pressed. As a result, the low rigidity absorbent portion 32, which has weak rigidity, is deformed and absorbs shock. At this time, the shock transmitted to the pedestrian by the shock absorption of the low rigidity absorbing portion 32 is alleviated.

Meanwhile, referring to FIG. 4 and FIG. 5, when the bumper device 20 according to an embodiment of the present invention collides with another object at a low speed, the bumper cover 22 may have low rigidity as shown in FIG. 4 during an initial collision process. The absorption part 32 is pressed. As a result, the low rigidity absorbent portion 32, which has weak rigidity, is deformed and absorbs shock. When the bumper cover 22 further presses the low rigid absorption part 32 as shown in FIG. 5, the deformation of the low rigid absorption part 32 is intensified, and the partition wall 31 is deformed to absorb the impact again. .

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

As described above, the shock absorber for automobiles according to the present invention has the effect of simultaneously allowing shock absorption due to low speed collision while protecting pedestrians.

In addition, since the shock absorbing material according to the present invention is molded from a plastic material, the design and processing are smooth, so that the productivity is improved and the manufacturing cost is low.

Claims

Bumper beams;

A bumper cover covering the bumper beam; And

The shock absorber for a vehicle, characterized in that it comprises a shock absorbing material embedded in the bumper cover and having a honeycomb shape.

The method of claim 1,

The shock absorbing material is a partition wall;

A low rigid absorbent portion having a honeycomb shape projecting to one side of the partition wall; And

And a high rigid absorbent portion protruding to the other side of the partition wall and having a honeycomb shape and having a greater strength than the low rigid absorbent portion.

The method according to claim 1 or 2,

The shock absorbing material is an automobile shock absorber, characterized in that the injection molded in a plastic material.