JP2004276818A - Body structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily increase the strength of a skeletal structure in the body rear region without narrowing the space in the cabin. <P>SOLUTION: A rear side member 1 is respectively extended in the approximately longitudinal direction of a vehicle on both side parts of the vehicle, and a rear end cross member 2 in the vehicle width direction is respectively connected with the rear end parts of both rear side members 1. In the meantime, a bracket 3 having an approximately L-shaped vertical section is respectively connected with a wall surface 4 of the rear side member 1 and a wall surface 5 of the rear end cross member 2 in a manner to be astride, and a box-shape structure 7 is formed of the bracket 3 and both wall surfaces 4 and 5. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a skeletal structure of a vehicle body, and particularly to a skeletal structure of a rear part of the vehicle body.
[0002]
[Prior art]
BACKGROUND ART As a skeletal structure of a rear portion of a vehicle body, a structure described in Patent Literature 1 below is conventionally known.
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2000-16338
In this case, the lower side of the rear opening of the tailgate is formed of a hollow closed cross-section body, and the rear damper house is straddled over the rear wheel house and the gusset and the hollow closed cross-section body above the rear floor panel. Although the joints are used, the number of required parts is large and the structure is complicated.At the same time, the interior space above the rear floor panel, especially the entrance side from the rear of the vehicle, is greatly reduced due to the presence of the rear damper house. As a result, there has been a problem that the merchantability of the vehicle is reduced.
[0005]
[Problems to be solved by the invention]
An object of the present invention is to simply increase the strength of a skeletal structure at a rear portion of a vehicle body without narrowing a vehicle interior space.
[0006]
[Means for Solving the Problems]
For this reason, the vehicle body structure according to the present invention has a rear side member extending substantially in the vehicle front-rear direction on both sides of the vehicle body and being joined to the floor panel upward, and a rear end member extending in the vehicle width direction and having a rear end portion of each of the rear side members. The connected rear end cross member, and the vehicle body width direction inner wall surface at the rear end of the rear side member and the vehicle front side wall surface of the rear end cross member are connected to each other and have a substantially L-shaped vertical cross section. It has a bracket, and is configured such that the upper end of the shock absorber is connected to the bottom of the bracket.
[0007]
In other words, a bracket having a substantially L-shaped vertical cross section extends across the inner wall surface in the vehicle width direction at the rear end of the rear side member and the vehicle front wall surface of the rear end cross member connected to the rear end of the rear side member. By being connected to each other, a substantially box-shaped structure in which the upper end of the shock absorber is connected to the bottom is formed at the connection between the rear end of the rear side member and the rear end cross member. While the rigidity and strength of the suspension can be increased, the suspension input transmitted from the shock absorber to the bracket can be reliably supported by the rear side member and the rear end cross member, and the floor panel is joined above the rear side member. Is installed in the vehicle interior That there is no also it is narrowed between.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention shown in the drawings will be described.
[0009]
Rear side members 1 extend substantially in the front-rear direction of the vehicle on both sides of the vehicle, and rear end cross members 2 extending in the vehicle width direction are connected to the rear ends of the rear side members 1, respectively, while the longitudinal cross section is substantially L-shaped. Of the rear side member 1 and the front wall surface 5 of the rear end cross member 2 at the rear end of the rear side cross member 2 are connected to each other by welding the bent flanges 6. , Bracket 3 and both wall surfaces 4, 5 form a box-shaped structure 7.
[0010]
A hole 9 is formed in a bottom portion 8 of the box-shaped structure 7, and an upper end portion of the shock absorber 10 passing through the hole 9 is connected to the bottom portion 8, and a rear side member 1, a rear end cross member 2, and a bracket 3 are provided. A floor panel 11 is joined to the upper surface of the shock absorber 10 to form a substantially closed cross section, and a mounting hole 12 at the upper end of the shock absorber 10 is formed in the floor panel 11.
[0011]
In the above-described frame structure at the rear of the vehicle body, the brackets 3 are connected to each other across the wall surface 4 at the rear end of the rear side member 1 and the wall surface 5 of the rear end cross member 2, thereby forming a box-shaped structure 7. Since the floor panel 11 is joined to the upper surfaces thereof to form a substantially closed cross section, the connection between the rear end of the rear side member 1 and the rear end cross member 2 is strengthened, and the rigidity and strength of the vehicle body frame structure are increased. At the same time, the rigidity and strength of the bracket 3 itself are increased, so that the thickness of the bracket 3 receiving the suspension input from the shock absorber 10 is reduced or the bracket 3 is reduced in size to reduce the weight of the vehicle body and Costs can be reduced.
[0012]
Further, the suspension input transmitted from the shock absorber 10 to the bracket 3 can be surely borne by the rear side member 1 and the rear end cross member 2 to which the bracket 3 is connected, and the suspension input from the shock absorber 10 The rotation torque acting on the bracket 3 about the axis in the vehicle front-rear direction in the wall surface 4 at the rear end of the rear side member 1 is supported by the rear end cross member 2, and in the vehicle width direction within the wall surface 5 of the rear end cross member 2. Since the rotational torque acting on the bracket 3 about the shaft is supported by the rear end of the rear side member 1, the rigidity and strength of the frame structure at the rear of the vehicle body can be easily increased by the bracket 3 having a simple structure. Upper end of shock absorber 10 By reducing the reinforcing member was required prior to hold the can reduce the number of parts, it is possible to achieve a reduction and cost reduction of the vehicle weight from the surface.
[0013]
Furthermore, the box-shaped structure 7 in which the upper end of the shock absorber 10 is connected to the bottom 8 is located below the floor panel 11 that is joined above the rear side member 1 and the rear end cross member 2. The formation does not reduce the interior space of the vehicle, especially the space in the luggage compartment at the rear of the vehicle, and therefore has an advantage that the commerciality of the vehicle can be maintained well.
[0014]
【The invention's effect】
In the vehicle body structure according to the present invention, a substantially box-shaped structure is formed by connecting brackets each having a substantially L-shaped vertical section so as to straddle the wall surface of the rear end portion of the rear side member and the wall surface of the rear end cross member. While the rigidity and strength of the connecting portion between the rear end of the member and the rear end cross member and the bracket itself increase, the suspension input transmitted from the shock absorber to the bracket can be reliably supported by the rear side member and the rear end cross member. Therefore, the structure of the rear part of the vehicle body can be simplified, the size of the bracket can be reduced, the weight of the vehicle body can be reduced, and the cost can be reduced. Further, since the floor panel is joined above the rear side member, the bracket To prevent the cabin space from being narrowed by installing There is a feature that.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view of a main part in an embodiment of the present invention.
FIG. 2 is an enlarged longitudinal sectional view taken along the line II-II of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rear side member 2 Rear end cross member 3 Bracket 7 Box type structure 10 Shock absorber 11 Floor panel

Claims (1)

A rear side member extending substantially in the front-rear direction on both sides of the vehicle body and joined to an upper floor panel, a rear end cross member extending in the vehicle width direction and connected to rear ends of the two rear side members, respectively, and the rear side The vehicle has a bracket having a substantially L-shaped vertical cross-section and connected to a vehicle width direction inner wall surface at the rear end of the member and a vehicle front wall surface of the rear end cross member, and a shock is applied to the bottom of the bracket. A body structure in which the upper end of the absorber is connected.

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