JP3370238B2 - Car body structure - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body structure of a space frame type automobile having a metal tube welding structure. 2. Description of the Related Art A long hollow material extruded from a light metal material such as aluminum with a constant cross-sectional shape can have a relatively freely set cross-sectional shape and can be formed in a horizontal direction and a vertical direction. Since they can be integrally molded with different thicknesses, it is possible to obtain desired strength characteristics according to the site of use with high efficiency, and recently, attention has been focused on their use as frame components of automobiles. . In the case of a so-called space frame formed by welding and connecting such metal tubes, a reinforcing plate is welded to the joint to increase the rigidity, the welding length of the joint is increased, and the thickness of the member is increased. Conventionally, techniques such as increasing the size have been adopted. [0004] However, these conventional methods all have a drawback that they cause an increase in weight and impair the weight reduction, which is an inherent advantage of the space frame. The present invention has been devised for the purpose of achieving such a problem imposed on the prior art, that is, achieving even higher rigidity without impairing the weight reduction. In order to achieve the above object, the present invention provides an extruded hollow length.
Space frame made by combining length materials and connecting them by welding
The structure of a car body of the type, with armrests (1
1) and wheel house (12) for high rigidity structural synthesis
Interior material (Rear interior panel 1) integrally formed of resin material
0) to the lower part of the center pillar (2)
Id member (5), lower part of rear pillar (6), and
Generally surrounded by a framework composed of side beams (7)
Vehicle body structure characterized by being adhered to a rectangular surface
It was provided. In this way, the interior material
Because it is a three-dimensional configuration with relatively large irregularities, it is special
Can provide required rigidity to interior materials without using reinforcement
You. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows a main part of a vehicle body frame constructed according to the present invention. The body frame has a space frame configuration in which a hollow long material having a constant cross section extruded and formed with a light metal material such as aluminum in an optimum cross sectional shape according to a portion to be used is appropriately combined and welded. . The lower end of the center pillar 2 is welded to the upper surface of the side sill 1 extending in the front-rear direction. A front floor member 3 is welded to the inner side surface of the side sill 1, and a rear floor side member 5 is welded to the rear end of the front floor member 3 via a cross member 4.
The lower end of the rear pillar 6 is welded to the rear end of the rear floor side member 5. In addition, the middle part in the vertical direction between the center pillar 2 and the rear pillar 6 is connected by a side beam 7 extending in the front-rear direction. The rear pillar 6 is bent in such a manner that an intermediate portion in the vertical direction bulges outward in the vehicle width direction in order to make the opening of the tail gate as large as possible. The upper end is welded to the rear end of the roof side member 8, and the left and right sides are connected to each other by a roof cross member 9 extending in the vehicle width direction. The rear end of the side sill 1 that is bent obliquely upward to avoid interference with the rear wheel is welded to the largest bulging portion at the middle in the vertical direction of the rear pillar 6. The lower part of the rear pillar 6 from the middle part is curved inward in the vehicle width direction so as to escape from the rear wheel. The lower part of the center pillar 2, the front floor member 3, the rear floor side member 5, the rear pillar 6
The lower part, and the generally rectangular surface surrounded by the framework constituted by the side beams 7, as shown in FIG.
It is closed by a rear interior panel 10 made of FRP formed by reaction injection molding (S-RIM). The rear interior panel 10 is bonded to the above-mentioned frame using, for example, a reaction-curable resin adhesive such as an epoxy resin. Each of the bonding portions between the rear interior panel 10 and the frame constituting member is shown in FIG. 3 for the portion for the side beam 7, FIG. 4 for the portion for the center pillar 2, FIG. 5 for the portion for the rear floor side member 5, and FIG. Are shown in FIG. The rear interior panel 10 has, for example, a three-dimensional structure with relatively large irregularities because the rear armrest 11 and the wheel house 12 are integrally formed, for example. Therefore, it is finished to be a member having higher torsional rigidity than a simple plate-shaped member. Therefore, by closing the surface surrounded by the frame with such a high-rigidity synthetic resin member, the bending and torsional rigidity of the entire frame can be further increased without separately adding a dedicated reinforcing member. As described above, according to the present invention, an interior material, which had only a decorative meaning as a mere lining, is integrally formed of a high-rigidity structural synthetic resin material. Since it is bonded to the frame of the frame, the rigidity of the vehicle body can be increased without using any reinforcing member. Therefore, the weight reduction is not impaired, and the number of parts is not increased, which is effective for cost reduction.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a main part of a vehicle body frame to which the present invention is applied. FIG. 2 is a side view of a main part viewed from the center side of the vehicle body. FIG. 3 is a sectional view taken along the line III-III in FIG. 2; FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2; FIG. 5 is a sectional view taken along line VV in FIG. 2; FIG. 6 is a sectional view taken along the line VI-VI in FIG. 2; [Description of Signs] 1 Side sill 2 Center pillar 3 Front floor member 4 Cross member 5 Rear floor side member 6 Rear pillar 7 Side beam 8 Roof side member 9 Roof cross member 10 Rear interior panel 11 Rear armrest 12 Wheelhouse

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B62D 25/08 B60R 13/02

Claims (1)

(57) [Claims] [Claim 1] Extruded hollow long section with a constant cross section
A space frame type vehicle body structure that is welded and connected by combining materials. The interior material, in which the armrests for the rear seats and the wheel house are integrally formed of a highly rigid structural synthetic resin material, is used as the center. Pillar
Lower part, rear floor side member, under rear pillar
Surrounded by a frame composed of side parts and side beams
A vehicle body structure characterized by being adhered to a generally rectangular surface .