JPH0578674U - Car body structure - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to increase the rigidity of the body so that the necessary rigidity can be obtained even in a body without a rear shelf panel or seat back panel. [Structure] A side stay 20 is welded to a side surface portion 19 of a wheel house where a rear wheel house inner 4 and a rear floor panel 3 are joined. This side stay 20
Are arranged vertically along the strut house 10 to form a hollow columnar closed cross section. Side stay 2
The upper end 25 of 0 is welded to the upper part of the strut house 10, and the lower end 27 of the side stay 20 is welded to the rear floor side member 9.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a body structure for increasing the rigidity of a rear portion of a vehicle body.

[0002]

[Prior Art]

 As shown in Fig. 3, at the rear of the passenger car body, body components such as a rear wheel house inner 102, a quarter panel inner 103, or a quarter panel outer 104 are assembled on both sides of a rear floor panel 100 and a rear seat pan 101. The body components are joined together by welding. The rear wheel house inner 102 is provided with a strut house 105, and the strut house 105 accommodates the upper part of a strut including a well-known shock absorber and a coil spring.

Further, depending on the vehicle type, a rear shelf panel, a seat back panel, etc. (not shown) extending in the vehicle width direction are provided above the rear floor panel 100. The rear shelf panel is mainly effective in increasing the bending rigidity of the body, and the seat back panel is effective in increasing the torsional rigidity.

[0004]

[Problems to be solved by the device]

 In the above-mentioned conventional example, in the case of a body structure having no rear shelf panel or seat back panel, the body rigidity may be insufficient for bending or twisting input unless some measures are taken. In particular, when there is an excessive input from the strut house 105 side during traveling, there is a possibility that part of the wheel house inner 102 (for example, the portions indicated by arrows A and B in FIG. 3) may be deformed. In addition, the strength of the lower portion of the wheel house inner 102 (the portion indicated by the arrow C) may be insufficient, which causes a decrease in body rigidity.

Therefore, an object of the present invention is to provide an automobile body structure capable of increasing the body rigidity and ensuring the necessary rigidity even in a body structure having no rear shelf panel or seat back panel. It is in.

[0006]

[Means for Solving the Problems]

 The body structure of the present invention developed to achieve the above-mentioned purpose is a side stay for forming a closed cross section extending vertically along the strat house at the side portion of the wheel house where the rear wheel house inner and the rear floor panel are joined. And the upper end of the side stay is welded to the upper part of the strut house and the lower end of the side stay is welded to the rear floor side member.

[0007]

[Action]

 A hollow columnar closed cross section is formed by a side stay along the strut house at a portion where the rear wheel house inner and the rear floor panel are joined. This side stay is welded from the upper part of the strut house to the rear floor side member, and since the rear wheel house inner and the rear floor side member are connected via this side stay, the body rigidity against the input of torsion or bending is increased. It will be effective in raising it.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. The rear portion 1 of the passenger car body shown in FIG. 1 includes a rear wheel house inner 4 and a rear quarter panel inner 4 which constitute a wheel house for accommodating rear wheels on both left and right sides of a well-known rear seat pan 2 and rear front panel 3. It is a combination of 5 and so on. A quarter panel outer 6 is attached to the outside of the rear quarter panel inner 5. Above the rear quarter panel inner 5 and the quarter panel outer 6, a rear pillar inner 7 and a rear pillar outer 8 are provided.

The rear wheel house inner 4 has a convex curved shape on the inside of the body, and its upper edge 4 a and the like are welded to the rear quarter panel inner 5. The lower edge portion 4b of the wheel house inner 4 is welded to the rear floor panel 3. A rear floor side member 9 is provided on the lower surface side of the rear floor panel 3. The rear front side member 9 has a curved shape along the contour of the wheel house inner 4 when viewed from above, and passes through a position separated from the wheel house inner 4 by a few cm toward the center of the body.

A strut house 10 is provided in a part of the wheel house inner 4. As shown in FIG. 2, the strut house 10 accommodates an upper portion of a well-known strut 13 (only a part of which is shown) including a shock absorber 11, a coil spring 12, and the like.

An annular support seat 15 is formed on the inner peripheral portion of the strut mounting hole 14 provided in the upper portion of the strut house 10. A sheet member 16 is overlaid on the support seat 15. The seat member 16 includes a base portion 16 a that overlaps with the lower surface side of the support seat 15 and a short cylindrical portion 16 b that projects upward from the strut mounting hole 14. Since the sheet member 16 needs to have sufficient strength to support the struts 13, as an example, a thick steel plate having a plate thickness of 1.2 mm to 1.4 mm is used. The plate thickness of the wheel house inner 4 is, for example, about 0.8 mm.

A bolt (not shown) for fixing the upper end portion of the strut 13 is inserted into a through hole 17 provided in the support seat 15 and the seat member 16, and a nut (FIG. The upper end portion of the strut 13 is supported by the strut house 10 by means of (not shown). The strut house 10 may be integrally formed with the wheel house inner 4, or a cylindrical part made separately from the wheel house inner 4 may be welded to the wheel house inner 4. But it's okay.

A side stay 20 is provided on a side surface portion 19 of the wheel house inner 4. The stay 20 is for forming a closed cross section of a hollow column extending vertically along the strut house 10. The stay 20 includes a front plate 21 and a rear plate 22, and a side plate 23 connecting the front plate 21 and the rear plate 22.

The side stays 20 are welded to the side surface portion 19 of the wheel house inner 4. The upper end portion 25 of the side stay 20 has three pieces by spot welding which is performed in a state where three pieces are stacked at the upper portion of the strut house 10, that is, the overlapping portion of the sheet member 16 which is the thick plate portion 26 and the support seat 15. Are joined together. Instead of spot welding, line welding such as seam welding or arc welding may be used. The lower end portion 27 of the side stay 20 reaches the side wall 28 of the rear floor side member 9 and is welded to the rear floor side member 9.

That is, in this embodiment, the wheel house inner 4 and the rear floor side member 9 are separated from each other by the lateral width of the side stay 20, and the side surface portion 19 of the wheel house inner 4 is connected to the rear floor via the side stay 20. It is joined to the side member 9. The bent flange portion 29 provided on the edge portion of the rear floor panel 3 may be spot-welded to the side stay 20.

According to the above configuration, the side stay 20 welded to the side surface portion 19 of the rear wheel house inner 4 forms a hollow columnar closed cross section along the strut house 10 and the upper end portion of the side stay 20. Since 25 is welded to the thick plate portion 26 of the strut house 10 and the lower end portion 27 of the side stay 20 is welded to the rear floor side member 9, the wheel in the vicinity of the strut house 10, which is apt to be a weak point in the conventional strength, has been conventionally. In addition to preventing deformation of the house inner 4, it is also possible to increase the strength of the joints with the rear floor panel 3 at the bottom of the wheel house inner 4, etc. In a body structure that does not have a rear shelf panel or seat back panel. , Body stiffness for bending and twisting inputs Can be improved by about 20%.

[0017]

[Effect of the device]

 According to the present invention, the side stays provided on the side portions of the wheel house inner can avoid deformation of the wheel house inner and strong weak points in the lower portion of the wheel house inner, etc., and enhance the body rigidity. It has a great effect.

[Brief description of drawings]

FIG. 1 is a perspective view of a part of a rear portion of a vehicle body showing an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a part of the rear portion of the body shown in FIG.

FIG. 3 is a perspective view showing a conventional body structure.

[Explanation of symbols]

3 ... Rear floor panel, 4 ... Rear wheel house inner, 9 ... Rear floor side member, 10 ... Strut house, 19 ... Wheel house side part, 20 ... Side stay, 25 ... Upper end part, 27 ... Lower end part.

Claims (1)

[Scope of utility model registration request] 1. A side stay for forming a closed cross section, which extends vertically along a strut house, is welded to a side surface portion of a wheel house where a rear wheel house inner and a rear floor panel are joined, and an upper end portion of the side stay. Is welded to the upper part of the strut house and the lower end of the side stay is welded to the rear floor side member.