KR19990033380A - Rear shock absorber of car - Google Patents

Abstract

The present invention relates to a rear shock absorber of an automobile, wherein cylindrical housings 3 fixed to a plurality of support brackets 2 are respectively installed in parallel to each other to the left and right sides of the floor panel 1 at the rear of the vehicle body, and the housing A primary shock absorbing spring (4) is built into the inside of the (3) and the piston rod (5) is installed, the secondary shock absorbing spring (6) between the rear of the piston rod (5) and the outer flange of the housing (3) ) Is installed, and a disc-shaped shock absorbing bracket (7) is provided on the rear end surface of the piston rod (5) in contact with the rear bumper of the vehicle to induce an impact. By mitigating enough, the passengers of the vehicle can be protected more safely.

Description

An alleviating device for a rear impact of an automobile

The present invention relates to a device that is installed in the rear of the vehicle to mitigate the impact of the rear, in particular to install a shock absorber having an elastic force in the lower portion of the vehicle body to further mitigate the impact generated during the rear collision of the car more passengers The present invention relates to a rear shock absorber of a vehicle so as to protect safely.

Generally, bumpers are mounted on the front and rear of the vehicle body to absorb the impact during a collision and protect the occupants. Thus, shock absorbers such as foam rubber can effectively absorb the impact energy during the collision of the vehicle. Pescia is fitted to the front side of the structure is combined.

In addition, since the shock absorbing material alone is insufficient to protect the occupants and the like more effectively during an automobile crash, a shock absorbing beam made of steel is usually coupled to the rear surface of the shock absorbing material to compensate for the collision stiffness of the bumper.

Here, since the shock absorber and the shock absorbing beam are installed to extend uniformly over the entire width in the width direction of the vehicle, the shock absorber and the shock absorbing beam have a substantially constant impact energy absorbing ability in the width direction of the vehicle, so that the vehicle is in any direction of the bumper. Even when collided or collided, the impact energy can be absorbed in an almost uniform amount.

However, even if the structure is designed to absorb the shock as described above, there is a drawback that the rear side of the vehicle body is inadequate to the impact because the impact due to the rear collision, which is difficult for the passengers to cope rather than the impact due to the front collision, is always stronger. As described above, since the means for mitigating the impact in the horizontal direction are usually concentrated around the bumper, there is a problem that it is weak to attenuate the impact in the vertical direction relatively.

Accordingly, the present invention has been made in order to solve the above problems, install a shock absorber having an elastic force in the lower portion of the vehicle body to further mitigate the impact generated during the rear collision of the car to protect the passengers more securely It is an object of the present invention to provide a rear shock absorber of a vehicle.

In order to achieve the above object, the present invention provides cylindrical housings fixed by a plurality of support brackets on the right and left sides of a floor panel at the rear of the vehicle body, installed in parallel with each other, and a primary shock absorbing spring is built into the housing. In addition, a piston rod is installed, and a secondary shock absorbing spring is fitted between the rear of the piston rod and the outer flange of the housing, and the rear end surface of the piston rod contacts the rear bumper of the vehicle to induce an impact. The plate-shaped cushioning bracket is installed.

That is, when the shock absorbing bracket and the rear bumper come into contact with each other during the rear collision of the vehicle, the piston rod moves forward, and the primary shock absorbing spring and the secondary shock absorbing spring are compressed by the advancing of the piston rod to absorb the shock step by step. The cylindrical housing and the piston rod itself can also reinforce the rigidity of the vehicle body.

Therefore, the above-mentioned rear shock mitigating device can protect the passengers of a vehicle more safely by fully mitigating the impact especially at the time of a rear collision.

1 is a schematic diagram schematically showing an installation state of a rear shock absorber according to the present invention;

2 is a perspective view schematically showing a rear shock absorber according to the present invention.

Explanation of symbols on the main parts of the drawings

1: Floor Panel 2: Support Bracket

3: housing 4: primary buffer spring

5: piston rod 6: secondary buffer spring

7: cushioning bracket

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

1 is a schematic diagram schematically showing an installation state of a rear shock absorber according to the present invention, Figure 2 is a perspective view schematically showing a rear shock absorber according to the present invention, the left and right sides of the floor panel (1) of the rear of the vehicle body The cylindrical housings (3) fixed by a plurality of support brackets (2) are installed in parallel to each other, and the primary shock absorbing spring (4) inside the housing (3) and the piston rod (5) The secondary shock absorbing spring (6) is inserted between the rear of the piston rod (5) and the outer flange of the housing (3), the rear end surface of the piston rod (5) on the rear bumper of the vehicle The disk-shaped cushioning bracket 7 which is in contact with and induces an impact is installed.

That is, when the shock absorbing bracket 7 and the rear bumper come into contact with each other during the rear collision of the vehicle, the piston rod 5 moves forward, and the primary shock absorbing springs 4 and 2 move forward by the piston rod 5. As the shock absorber 6 is compressed, the shock may be absorbed in stages, and the cylindrical housing 3 and the piston rod 5 may also reinforce the rigidity of the vehicle body.

In addition, one side of the piston rod 5 in contact with the primary shock absorbing spring 4 and the other side of the rear side of the piston rod 5 in contact with the secondary shock absorbing spring 6 mechanically buffer each other. It can cause another buffering effect.

Therefore, the impact mitigating device can absorb the impact remarkably during the rear collision, thereby more reliably protecting the safety of the passengers.

As described above, according to the rear impact relieving device for a vehicle according to the present invention, the impact of the vehicle is sufficiently secured by mitigating the shock during the rear collision.

Claims (1)

Cylindrical housings 3 fixed to the right and left sides of the floor panel 1 at the rear of the vehicle body by the plurality of support brackets 2 are installed in parallel with each other, and the primary shock absorbing spring 4 is provided inside the housing 3. And a piston rod 5 is installed, and a secondary shock absorbing spring 6 is inserted between the rear of the piston rod 5 and the outer flange of the housing 3 to install the piston rod 5. A rear shock absorber of a vehicle provided with a disc-shaped shock absorbing bracket (7) in contact with the rear bumper of the vehicle to induce an impact.