JPH0439171A - Side member connecting structure - Google Patents

Abstract

PURPOSE:To improve the strength of a side member without increasing connection strength by forming the butt section of a plate material constituting the side member into a step shape, and increasing a connection section. CONSTITUTION:A side member 10 is formed with a side member outer 10A and a side member inner 10B. The lower end section of a pillar outer 24 is butted to the periphery of the notch of a rocker outer 14. A vertical wall section 40 is formed on the periphery of the notch into a step shape, a tongue piece section 48 is formed at the lower end section of the pillar outer 24 into a step shape correspondingly to it, and horizontal planes at the upper section and the lower section and a vertical plane between them are butted to each other. Connection faces of members of the side member 10 thus formed are expanded, and its strength can be increased even when the members are welded with the same connection strength as the connection strength between planes.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a side member joining structure in which plate materials forming the vicinity of a vehicle door are butted and joined to form a side member panel in which side members are integrated.

[Prior art]

As shown in FIG. 3, the side member of a conventional vehicle is
The rocker part 52, the roof sight rail part 54, the front pillar part 56, the center pillar part 58, and the quarter pillar part 60 are press-formed individually in advance, and the press-formed parts are butted and welded. I have to.

In addition, as shown in Figure 4, Utility Model No. 61-24277
In the publication, the joint portion of each plate material is divided into connecting members 62 separate from each plate material, and after a plurality of plate materials such as the rocker portion 52 and the connecting members 62 are butted and joined, press molding is performed. That's what I do. This was done in order to prevent a decrease in the yield of pressed rough shapes that would occur if the shape of each plate material was not linear but had curved ends such as flared ends. Part 5
6. Eliminate curved parts from the plate materials such as the center pillar 58,
A rough-shaped material can be formed in a linear shape, and the yield of pressed rough-shaped materials can be improved.

[Problem to be solved by the invention]

However, in the above-mentioned conventional structure, since the butted portions of the plates are linear, the range of the joined portions is limited and the joint strength may be weak. In order to increase the strength of the side member with a small number of joints, it is necessary to increase the joint strength, which results in poor workability.

The present invention has been made in consideration of the above-mentioned facts, and an object of the present invention is to increase the strength of a side member without increasing the joint strength, and to obtain a side member joint structure that does not deteriorate workability.

[Means to solve the problem]

A side member joining structure according to the present invention is a side member joining structure in which a side member panel in which side members are integrated is formed by butting and joining plate materials forming the periphery of a vehicle door, and in which the abutting portion of the plate materials is stepped. It is characterized by its shape.

5 Effects] According to the present invention, since the abutting portions of the plate materials constituting the side member are stepped, the portion forming the step becomes an increment of joining, and the number of joined portions increases compared to simply butting straight lines, The strength of the side member can be improved without increasing the joint strength.

Furthermore, because of this stepped shape, there are joints in the peeling direction in the longitudinal and vertical directions of the vehicle, so the strength of the side member is improved more than increasing the number of joints. Further, for example, when the plate material is composed of an inner member and an outer member, the strength of the side member can be further improved by making these stepped shapes in opposite directions.

〔Example〕

FIG. 1 shows a side member 10 of a vehicle according to this embodiment. The side member 10 has a rocker portion 12 disposed on its lower side along the longitudinal direction of the vehicle. The rocker section 12 is composed of a rocker outer 14 and a rocker inner 16 (see FIG. 2).

A lower end portion of a front pillar portion 18 is joined to the front side of the vehicle of the rocker portion 12, and a quarter pillar portion 20 is connected to the rear of the vehicle.
The lower ends of are joined. Further, a lower end portion of a center pillar portion 22 is joined to an intermediate portion of the rocker portion 12 in the longitudinal direction of the vehicle. As shown in FIG. 2, the center pillar 822 is composed of a pillar outer 24 and a pillar inner 26, and the front pillar part 18 and quarter pillar part 20 have a similar structure.

A roof sight rail section 28 is disposed so as to extend over the upper ends of each of the front pillar part 18, the center pillar part 22, and the quarter pillar part 20. This roof site rail section 28 is composed of a rail outer 30 and a rail inner 32 on the back side thereof.

FIG. 2 shows an exploded perspective view showing a state in which the rocker R12 and the lower end of the center pillar portion 22 are joined. The joint structure of this joint is the same for the other joints, so the structure of the joint between the rocker portion 12 and the center pillar part 22 will be described in detail, and the description of the other joints will be omitted.

As shown in FIG. 2, the rocker outer 1 of the rocker portion 12
4 and the rocker inner 16 each have a substantially U-shaped cross section, and flanges 34 and 36 bent in directions away from each other are formed at both ends in the width direction, forming a so-called hat shape.

The outer rocker 14 and the inner rocker 16 each have cutouts 35 and 37 formed in their longitudinal intermediate portions. These notches 35 and 37 are located between the rocker outer 14 and the rocker inner 1.
6 are joined to each other to form the hole 38. Rocker outer 14 forming the periphery of each notch 35.37
and the rocker inner 16 has vertical wall portions 40 and 42, respectively.
are erected respectively. The vertical wall portions 40, 42 are formed alternately with respect to each other when viewed from the side of the vehicle. As a result, the rocker outer 14 and the rocker inner 16 in which the hole 38 is formed have a stepped shape.

On the other hand, in the center pillar part 22, the pillar outer 24 and the pillar inner 26 are formed in a U-shaped cross section, and both ends in the width direction are bent in directions away from each other, and a flange 44.
46 is formed.

The lower end of each of the pillar outer 24 and the pillar inner 26 has a joint width dimension of 172 mm with the rocker part 12.
A tongue piece portion 48.50 having a width dimension of It has become so. In this state, the rocker section 12
and the center pillar part 22 are welded and joined.

The joint structure between the rocker outer 14 and the pillar outer 24 and the joint structure between the rocker inner 16 and the pillar inner 26 is as follows.
The same process is performed at the abutting portions of each member to form a side member outer IOA and a side member inner IOB. By joining this side member outer IOA and side member inner 10B, an integrated side member 10 can be constructed.

Here, the flanges 34 and 36 of the rocker outer 14 and the rocker inner 16 that face each other are joined, and the rocker portion 1
2 has a closed cross-sectional shape. In addition, the seven flange 44 and 46 are joined to each other, and the center pillar portion 22 has a closed cross-sectional structure. Furthermore, the front pillar part 18, the quarter pillar part 20, and the roof site rail part 28 also have a closed cross-sectional structure.

The operation of this embodiment will be explained below.

A rocker portion 12, a front pillar part 18, a center pillar part 22, and a quarter pillar part 2 that constitute the side member 10.
0 and the roof site rail portion 28 are divided into an outer part and an inner part to form a side member outer IOA and a side member inner IOB. The procedure for joining the pillar outer 24 of the center pillar portion 12 and the rocker outer 14 of the rocker portion 12 will be explained by taking as an example. First, pillar outer 1
4 butt against the periphery of the notch 35 of the rocker outer 14. At this time, the peripheral edge of the notch 35 is formed with a vertical wall portion 40 and has a stepped shape. Correspondingly, the lower end of the pillar outer 24 is also formed with a tongue portion 48 and has a stepped shape. The horizontal planes of the high and low parts and the vertical plane between them abut each other. As a result, the abutting surface is enlarged by the vertical surface compared to simply abutting horizontal surfaces.

Next, the abutting surfaces are joined by welding, and the joining between the rocker outer 14 and the pillar outer 24 is completed. Similarly, the lower end of the pillar outer 24 of the front pillar part 18 is joined to the vehicle front end of the rocker outer 14, and the lower end of the pillar outer 24 of the quarter pillar part 20 is joined to the vehicle rear end of the rocker part 12. Ru. Furthermore, a rail outer 30 is joined to the upper end of each pillar outer 24 of the front pillar part 18, the center pillar part 22, and the quarter pillar part 20, respectively. As shown in FIG. 1, each joint has a stepped shape similar to the joint between the rocker outer 14 and the pillar outer 24, so that the abutting surfaces are enlarged.

When all the above connections are completed, the side member outer IO
A is constructed. Similarly to this, side member inner IO
B is constructed, and by joining these, an integrated side member 10 is formed.

In the side member 10 configured in this way, since the joint surfaces of each member are enlarged, the strength of the side member 10 can be increased even if welding is performed with a joint strength equivalent to the joint strength between planes. I can do it.

In addition, since the joint portion is made into a stepped shape, the joint is in the peeling direction in both the vehicle longitudinal direction and the vehicle vertical direction, so that the strength of the side member 10 is made higher than the increase in strength due to the enlargement of the joint surface. be able to.

Furthermore, since the stepped shapes are alternated between the outer part and the inner part of each member, for example, when a force is applied to the front pillar part 18 from the front of the vehicle, the vertical surface on the pillar inner part 26 side This can prevent slippage from the rocker portion 12. Furthermore, when a force is applied to the front pillar portion 18 from the rear of the vehicle, it is caught on the vertical surface on the pillar outer 24 side, thereby preventing it from slipping from the rocker portion 12, as shown in FIG.

As described above, in this embodiment, since the abutting portions between the members constituting the side member 10 are formed into a stepped shape, the abutting surfaces can be enlarged, and the abutment surfaces can be enlarged, and can withstand load inputs in the vehicle longitudinal direction and the vehicle vertical direction. Since the joint portion can be provided in the peeling direction, the strength of the side member 10 can be improved without increasing the joint strength.

〔Effect of the invention〕

As explained above, the side member joining structure according to the present invention has the excellent effect of increasing the strength of the side member without increasing the joining strength, and without deteriorating workability.

[Brief explanation of the drawing]

FIG. 1 is a front view of the side member according to this embodiment, and FIG.
The figure is an enlarged perspective view of the joint part of the side member of this embodiment.
31st! 1 and 4 are front views showing conventional side member joining structures. 10... Side member, 12... Rocker part, 18... Part of front pillar, 20... Part of quarter pillar, 22... Part of center pillar, 28... Roof site rail part, 40. 42... Vertical wall part, 48.50... Tongue piece part.

Claims (1)

[Claims] (1) A side member joining structure that constitutes an integrated side member panel by abutting and joining the plate materials that make up the area around the vehicle door, the side member characterized in that the abutting portion of the plate materials is stepped. Joint structure.