KR19980056530A - Reinforcement structure of vehicle cross member - Google Patents

Abstract

The present invention relates to a third cross member rigid reinforcing structure for suppressing the deformation of the side side of the vehicle body in the event of a side collision of the vehicle. In the third cross member reinforcement structure according to the present invention, a reinforcement member is installed on an upper portion of the third cross member, and the reinforcement member is joined to an upper surface of a lower end of the third cross member, and the other side is a third. It is characterized in that it is joined to the upper end surface of the upper cross member to form a closed cross section.

Description

Reinforcement structure of vehicle cross member

The present invention relates to a third cross member rigid reinforcing structure for suppressing deformation of the side of the vehicle body in the event of a side collision of the vehicle.

In general, the side of the vehicle has a weaker structure than the front and rear sides of the vehicle. Therefore, when the side of the vehicle collides, many deformations occur due to the impact, so high stiffness can be suppressed. Rescue is required.

As shown in FIG. 1, the side side structure of a general vehicle body is provided at both side ends of the center floor panel 1 perpendicularly to the inner side of the side seal 2, which constitutes the side bottom of the vehicle body. A rear side frame 3 is provided along the inside of the seal reinforcement panel, and a third cross member 4 having a stepped shape in the transverse direction as shown in FIG. The structure is installed.

However, the conventional third cross member as described above has a problem that the rigidity is not sufficient because it is composed of only one panel, and is easily deformed during a side collision, causing a danger to the safety of the passenger.

Accordingly, an object of the present invention is to provide a third cross member reinforcing structure which can minimize deformation during collision by reinforcing the third cross member.

1 is a perspective view showing a body of a typical automobile.

FIG. 2 is a cross sectional view of a third cross member located at the portion indicated by A in FIG. 1; FIG.

Figure 3 is a cross-sectional view showing a reinforcing structure of the third cross member according to the present invention.

* Explanation of symbols for main parts of the drawings

4: 3rd cross member 5: reinforcement member

In order to achieve the above object, the third cross member reinforcing structure according to the present invention is provided with a reinforcing member on the upper portion of the third cross member, the reinforcing member is one side of the upper end of the third cross member Joined to the surface, and the other side is joined to the upper end of the upper end of the third cross member to form a closed cross section.

EXAMPLE

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

3 shows a reinforcing structure of the third cross member according to the present invention. As shown, the reinforcing structure of the third cross member according to the present invention is made by installing the reinforcing member 5 on the upper portion of the third cross member 4, which will be described in detail as follows. That is, one side of the reinforcing member 5 is joined to the lower end upper surface of the third cross member 4 having the stepped shape by welding, and the other side is the upper end upper surface of the third cross member 4. Is bonded to. Thus, a closed cross section is formed between the reinforcing member 5 and the third cross member 4.

According to the present invention as described above, the rigidity of the third cross member is reinforced, so that deformation of the third cross member is minimized during a side collision, thereby improving passenger safety.

Claims (1)

A structure for reinforcing the rigidity of the third cross member having a stepped shape provided at the front end of the rear side frame, wherein a reinforcing member is installed on an upper portion of the third cross member, and one side of the reinforcing member crosses the third. Reinforcing structure of the vehicle cross member, characterized in that bonded to the upper end of the lower end of the member, the other side is joined to the upper end of the upper end of the third cross member to form a closed end surface for reinforcement.