KR19980061227A - Shock-absorbing bumper stay - Google Patents

Abstract

The present invention relates to a shock-absorbing bumper stay of an automobile, wherein the fluid is stored in a bumper stay for mounting the bumper back beam to a side member of the vehicle, and the impact force transmitted to the vehicle in the event of a collision can be absorbed together with the urethane foam material. Its purpose is to ensure safety.

In order to achieve the above object, the present invention provides a bumper stay coupled to the front of the side member disposed in both sides of the vehicle body in the longitudinal direction of the vehicle, a bumper back beam coupled to the front of the bumper stay, the bumper back beam In the bumper of the vehicle consisting of a bumper fascia which is built by embedding a urethane foam material, which is a kind of energy absorbing material to absorb / block the impact force applied to the vehicle body in the middle of the collision, the side member (1) and the front thereof The fluid 3 is enclosed in the closed space in which the bumper stay 2 is coupled to the pump, so that a substantial portion of the impact force applied to the vehicle body in the case of a front collision of the vehicle can be absorbed through the fluid 3. do.

Description

Shock-absorbing bumper stay

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock absorbing bumper stay of an automobile, and in particular, a shock absorbing bumper stay of a vehicle in which a shock force applied to a vehicle body can be alleviated by enclosing a fluid in a bumper stay connecting a bumper back beam and a side member. It is about.

In general, the front and rear body of the vehicle is equipped with a bumper to alleviate the impact applied to the vehicle body in the event of a collision or crash accidents to ensure the safety of the occupants, the bumper is installed for this purpose is shown in Figure 1 As described above, the bumper stay 11 is coupled to the front of the side members disposed on both sides of the vehicle body in the longitudinal direction of the vehicle, the bumper back beam 12 coupled to the front of the bumper stay 11, and the bumper back beam. It is generally composed of a bumper fascia 14 coupled to embed the urethane foam material 13, which is a kind of energy absorbing material that absorbs / blocks the impact force applied to the vehicle body in the middle of the collision in the middle of the (12).

Therefore, the impact force applied to the vehicle body in the event of a front collision of the vehicle is first damaged by the bumper fascia 14, and then the impact force is passed between the bumper fascia 14 and the bumper back beam 12 after passing through the bumper fascia 14. The urethane foam material 13 is a kind of energy absorbing material. The urethane foam material 13 effectively absorbs the transmitted impact force to minimize the impact applied to the vehicle body, thereby enabling the occupant's safety.

However, as described above, the urethane foam material 13 embedded between the bumper fascia 14 and the bumper back beam 12 absorbs the shock applied to the vehicle body during a collision. When an excessive impact force exceeding the shock absorbency of (13) is applied, the impact force beyond the limit is inevitably absorbed into the vehicle body, which is a fatal threat to the occupant's safety.

Accordingly, the present invention has been made to solve the above disadvantages, so that the fluid stored in the bumper stay for mounting the bumper back beam to the side member of the vehicle body to absorb the impact force transmitted to the vehicle body in the event of a collision with the urethane foam material. The purpose is to provide a shock-absorbing bumper stay of a vehicle that can be designed to ensure the safety of the occupants.

1 is an exploded perspective view showing the configuration of a conventional general bumper;

2 is a side view of the shock absorbing bumper stay supporting the bumper back beam according to the present invention;

3 is a cross-sectional view taken along the line A-A of FIG.

Explanation of symbols on the main parts of the drawings

1: side member 2: bumper stay

3: fluid 4: supporting member

5: protrusion part 6: horizontal member

7: vertical member 8: tapping hole

9: stopper

The present invention for achieving the above object, the bumper stay coupled to the front of the side member disposed on both sides of the vehicle body in the longitudinal direction of the vehicle, the bumper back beam coupled to the front of the bumper stay, the bumper back beam In the bumper of the vehicle consisting of a bumper fascia coupled to the interior of the urethane foam material, which is a kind of energy absorber that absorbs / blocks the impact force applied to the vehicle body in the middle of the collision, the side member is coupled to the front thereof. The fluid is enclosed in the closed space in which the bumper stay is formed so that a substantial part of the impact force applied to the vehicle body in the case of a front collision accident of the vehicle can absorb the fluid.

To this end, the fluid is hollow in front of the side member and has a protruding portion on the front side thereof, a support member fitted thereto, a hollow horizontal member extending vertically by being vertically bonded to the rear surface of the bumper stay, and an inner side of the horizontal member. While being joined to the center is penetrated in the closed space to form a vertical member that is penetrated in the front and rear direction is inserted into the protrusion.

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

Figure 2 is a side view of the shock absorbing bumper stay supporting the bumper back beam according to the present invention, Figure 3 is a cross-sectional view taken along line A-A of FIG.

As shown in the drawings in the present invention, a bumper stay coupled to the front of the side member disposed on both sides of the vehicle body in the longitudinal direction of the vehicle, a bumper back beam coupled to the front of the bumper stay, the bumper back beam In the bumper of the vehicle consisting of a bumper fascia coupled to the interior of the urethane foam material, which is a kind of energy absorbing material absorbing / blocking the impact force applied to the vehicle body in the middle, the bumper in front of the side member (1) The stay 2 is coupled to the perturbation in the front-back direction by enclosing the fluid 3 inside.

That is, the hollow support member 4 of the rectangular box shape is fitted into the front inner side of the side member 1, and the bumper is provided on the protrusion 5 having a circular cross section integrally formed on the front surface of the support member 4. It is joined to the back of the stay (2) vertically integrally joined to the inside of the hollow horizontal member 6 of the rectangular box shape extending long, while the vertical member (7) penetrated in the center is fitted to perturbably in the front-rear direction The fluid 3 is sealed into a closed space formed by the protrusion 5 of the support member 4, the horizontal member 6, and the vertical member 7, and the horizontal member of the bumper stay 2 ( The upper side of 6) is formed with a tapping hole (8), the stopper (9) of the plastic material is screwed through this structure is fixed.

Therefore, the impact force applied to the vehicle body during the front collision accident of the vehicle is primarily absorbed by the urethane foam material embedded between the bumper fascia and the bumper back beam, and secondly, a support member fitted to the bumper stay 2 and the side member 1 ( 4) The fluid 3 filled in the closed space is absorbed. At this time, the fluid 3 is compressed to a high pressure by the impact force transmitted to the vehicle body, and when a predetermined level is exceeded, the fluid 3 is screwed into the horizontal member 6. The fastening cap 9 is pulled out from the tapping hole 8 while leaving the outside.

As the fluid 3 filled between the bumper stay 2 and the support member 4 is ejected to the outside, a large part of the impact force applied to the vehicle body is absorbed while the volume thereof is reduced, thereby contributing to the safety of the vehicle. do.

On the other hand, if the number of threads of the inner circumferential surface of the tapping hole 8 formed on the upper side of the horizontal member 6 of the bumper stay 2 is properly adjusted, the impact force transmitted to the vehicle body in the event of a collision, the bumper stay 2 And the degree of shock absorbency that can be absorbed while the fluid 3 filled between the support member 4 and the outside is ejected can be easily adjusted.

As described above, according to the impact-absorbing bumper stay of a vehicle according to the present invention, a vehicle is filled with a fluid between a bumper stay in which a bumper fascia and a urethane foam material are mounted on the vehicle body side, and a side member for mounting the bumper back beam. A large part of the impact force transmitted to the vehicle body in the event of a front collision can be absorbed as the fluid escapes to the outside, thereby contributing to the safety.

Claims (3)

A bumper stay coupled to the front of the side members disposed on both sides of the vehicle body in the longitudinal direction of the vehicle, a bumper back beam coupled to the front of the bumper stay, and an impact force applied to the vehicle body when the bumper back beam collides with the vehicle. In the bumper of the automobile consisting of a bumper fascia which is built by combining a urethane foam material, which is a kind of energy absorbing material to block the inside, The fluid 3 is enclosed in the closed space in which the side member 1 and the bumper stay 2 coupled to the front are formed, and a substantial part of the impact force applied to the vehicle body in the event of a front collision of the vehicle mediates the fluid 3. Shock-absorbing bumper stay of a vehicle, characterized in that the absorber can be absorbed. According to claim 1, wherein the fluid (3) is hollow in front of the side member (1) with a projection (5) on the front and fitted therein and the back of the bumper stay (2) The hollow horizontal member 6 which is vertically joined and elongated, and the vertical member 7 which is joined to the inner side of the horizontal member 6 and penetrates the center and is fitted to the protrusion 5 to perturb in the front and rear directions Shock-absorbing bumper stay of a vehicle, characterized in that enclosed in the closed space to form. The motor vehicle according to claim 1 or 2, wherein a tapping hole (8) is formed on an upper side of the horizontal member (6) of the bumper stay (2), and a stopper (9) is screwed and fixed thereto. Shock-absorbing bumper stay.