JPH07149259A - Car body structure of front wheel suspension device support part - Google Patents

Abstract

PURPOSE:To provide a car body structure of a front wheel suspension sevice support part improved so that high rigidity and high productivity can be reconciled with each other. CONSTITUTION:In a car body structure of a front wheel suspension device support part where a damper housing 4 is arranged between a front upper member 2 extending in the longitudinal direction in an upper part of a car body and a front side member 3 extending in the longitudinal direction in a lower part of the car body in order to house and support a front wheel suspension device, a center bracket 5 and front (rear) brackets 6a and 6b to support an upper arm 1, are joined to an outside surface of a wall on the car body center side of the damper housing. At the same time, a stiffener 10 to connect the outside surface of the damper housing and the front side member to each other is joined from inside of the car body in a position corresponding to a center bracket installing part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body structure for a front wheel suspension system support portion, and more particularly to a structure for an upper arm support portion in a front wheel independent suspension system.

[0002]

2. Description of the Related Art In a front wheel independent suspension system, a front upper arm composed of an A arm or the like is connected to a vehicle body at, for example, an eyebolt-shaped anchor bolt on a lower surface of a damper housing provided inside a front wheel housing. The structure in which the upper arm bracket is provided on the reinforcing plate or the closed cross-section member provided so as to connect between the front upper member and the front side member of the vehicle body, and the upper arm is pivotally attached to this ( For example, Japanese Utility Model Laid-Open No. 1-130884) is known.

[0003]

In the former case, since the connection point of the anchor bolt with the vehicle body and the pivot point of the upper arm are vertically separated, the input from the upper arm is relative to the axis of the anchor bolt. Since bending stress is applied,
It is difficult to secure the rigidity of the bolt screwing part.

In the latter case, it is troublesome to increase the productivity because the reinforcing member connected to the upper arm bracket is connected to the front side member having a closed cross section by spot welding.

The present invention has been devised in order to eliminate such disadvantages of the prior art, and its main object is to improve the front wheel suspension so as to achieve both high rigidity and high productivity. An object is to provide a vehicle body structure of a device supporting portion.

[0006]

According to the present invention, there is provided a front upper member extending in the front-rear direction at the upper part of the vehicle body for accommodating and supporting a front wheel suspension device.
A vehicle body structure of a front wheel suspension device supporting portion, wherein a damper housing is provided between a front side member extending in the front-rear direction at a lower portion of the vehicle body, and the damper housing is formed separately from each other and integrally coupled. An upper member and a lower member, the upper member is coupled to the front upper member, the lower member is coupled to the front side member,
An upper arm center bracket is provided so as to connect a connecting portion between the upper member and the lower member and a connecting portion between the lower member and the front side member, and both front and rear surfaces of the upper arm center bracket are provided. Upper arm front / rear brackets are provided at positions facing each other so as to connect the upper member and the upper arm center bracket, and between the upper arm center bracket and the upper arm front / rear bracket. The present invention is achieved by providing a vehicle body structure for a front wheel suspension device support, wherein an upper arm of the front wheel suspension device is pivotally supported. In particular, it is preferable to provide a stiffener connected to the lower member and the front side member on the back surface of the portion of the lower member to which the upper arm center bracket is attached.

[0007]

With this structure, the upper arm can be pivotally mounted between the front and rear surfaces of the upper arm center bracket and the upper arm front / rear brackets provided to face each other. The load input from the upper arm is received by each upper arm bracket whose upper end is coupled to the front upper member and the upper arm center bracket whose lower end is coupled to the front side member via the upper member. The rigidity of the upper arm mounting portion can be improved by connecting the back surface of the mounting surface of the upper arm center bracket in the lower member to the front side member via the stiffener. Further, the stiffener coupled to the front side member is coupled to the wall surface of the damper housing facing the center of the vehicle body, so that spot welding of the same portion can be easily performed, and the productivity is improved.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described in detail below with reference to specific embodiments shown in the accompanying drawings.

FIGS. 1 and 2 show the structure of an upper arm mounting portion of a front wheel suspension system constructed according to the present invention, and a front view of one side partially shown in section in FIG.
FIG. 2 is a left side view of FIG. 1 in which FIG. 2 is partially cut away.

An upper arm 1 for supporting an upper end of a hub carrier (not shown) has a hollow closed cross-section front upper member 2 extending in the front-rear direction of the vehicle body by offsetting each other vertically and horizontally. It is housed and supported in a damper housing 4 connected between the front side member 3 and the front side member 3.

The damper housing 4 includes a damper housing upper 4a having a lid shape whose upper surface is substantially closed,
A damper housing lower 4b opened to the side and the lower side of the vehicle body is joined to join the outer housing outer wall of the damper housing upper 4a to the inner surface of the front upper member 2 and the damper housing lower 4b body. The lower edge of the central wall is joined to the front side member 3.

The upper edge of the upper arm center bracket 5 is joined to a surface (outer surface) of the wall on the center side of the vehicle body facing outward of the vehicle body at the joint portion between the damper housing upper 4a and the damper housing lower 4b. . The upper arm center bracket 5 is composed of a pair of vertically extending leg portions 5a and a connecting portion 5b connecting between the upper ends of the leg portions 5a. The connecting portion 5b has the damper housing upper 4a and the damper housing as described above. Lower 4
The lower ends of the pair of legs 5a joined to the joint with the front side member 3 and the damper housing lower 4 are joined together.
It is joined to the joint portion with b.

An upper arm front bracket 6a and an upper arm rear bracket 6b are attached at positions facing the front and rear surfaces of the upper arm center bracket 5, respectively. Both of the upper arm brackets 6a and 6b have a substantially Ω shape, and the upper ends thereof are respectively joined to the outer surfaces of the walls of the damper housing upper 4a on the center side of the vehicle body, and the lower ends thereof are the front and rear of the upper arm center bracket 5. It is bonded to each surface. And both upper arm brackets 6a-6
The protruding parts of b are respectively the damper housing lower 4b.
It is designed to closely contact the front and rear walls of the.

Between the front surface of the upper arm center bracket 5 and the upper arm front bracket 6a and between the rear surface of the upper arm center bracket 5 and the upper arm rear bracket 6b, the vehicle body side end of the upper arm 1 is It is pivotally attached via a rubber bush 7. The upper arm 1 is pivotally supported by a pin bolt 8 inserted from the outside of the damper housing lower 4b. A ball stud 9 for connecting to a front hub carrier is attached to the outer end of the upper arm 1.

A stiffener 10 is joined to the rear side of the mounting portion of the upper arm center bracket 5 in the damper housing lower 4b. The upper part of the stiffener 10 is a damper housing lower 4b.
Is joined to the surface (inner surface) facing the center side of the vehicle body, and its lower portion is joined to the front side member 3.

[0016]

As described above, according to the present invention, the center bracket and the upper arm front (rear) bracket are connected to the outer surface of the wall of the damper housing on the center side of the vehicle body and at the position corresponding to the mounting portion of the center bracket. Since the stiffener that connects the outer surface of the damper housing and the front side member is connected from the inside of the vehicle body, the rigidity of the connecting portion of the upper arm in the front wheel suspension system with the vehicle body is reduced, and the productivity is reduced. Can be increased without.

[Brief description of drawings]

FIG. 1 is a front view of one side of a vehicle body front structure according to the present invention, partially shown in section.

2 is a left side view of the vehicle body front structure shown in FIG.

[Explanation of symbols]

 1 Upper Arm 2 Front Upper Member 3 Front Side Member 4 Damper Housing 4a Upper 4b Lower 5 Upper Arm Center Bracket 5a Leg 5b Connection 6a Upper Arm Front Bracket 6b Upper Arm Rear Bracket 7 Rubber Bushing 8 Pin Bolt 9 Ball Stud 10 Stiffener

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[Procedure amendment]

[Submission date] June 9, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

Claims (2)

[Claims] 1. A damper housing is provided between a front upper member extending in the front-rear direction at the upper part of the vehicle body and a front side member extending in the front-rear direction at the lower part of the vehicle body so as to accommodate and support the front wheel suspension device. In the vehicle body structure of a front wheel suspension device supporting portion, the damper housing is formed of an upper member and a lower member that are formed separately from each other and integrally coupled, and the upper member is coupled to the front upper member. The lower member is coupled to the front side member, and the upper arm center is configured to couple a coupling portion between the upper member and the lower member and a coupling portion between the lower member and the front side member. Brackets are provided on the front and rear surfaces of the upper arm center bracket. Upper arm front brackets and upper arm rear brackets are provided at positions facing each other so as to connect the upper member and the upper arm center brackets, and the upper arm center brackets, the upper arm front brackets, and the upper arms. A vehicle body structure of a front wheel suspension device supporting portion, wherein an upper arm of the front wheel suspension device is pivotally supported between the rear bracket and the rear bracket. 2. A back surface of a portion of the lower member to which the upper arm center bracket is attached,
The vehicle body structure of the front wheel suspension device supporting portion according to claim 1, further comprising a stiffener connected to the lower member and the front side member.