JPH0798496B2 - Rear suspension support structure - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a vehicle rear suspension support structure.

2. Description of the Related Art A conventional rear suspension support structure is shown in FIG.

In this support structure, a rear suspension mount bracket 1 for mounting a rear suspension is coupled to the lower surfaces of the left and right rear side members 2 of the vehicle body, and the inner side surfaces of the left and right rear suspension mount brackets 1 are crossed by a cross member 3 in the vehicle width direction. They are supported by being connected to each other. The outer surface of each rear suspension mount bracket 1 is connected to the left and right side sill inners 5 via the outriggers 4. Incidentally, this similar structure is shown in, for example, JP-A-61-291272.

In the above-described conventional rear suspension support structure, the left and right rear suspension mount brackets 1 and the rear side members 2 are connected to each other by the cross member 3, but this portion of the lower surface of the vehicle body is generally Since other members such as a fuel tank and an exhaust tube are arranged, it is difficult to secure the cross-sectional area of the cross member 3 in order to avoid interference with these members. That is, if the cross-sectional area of the cross member 3 cannot be sufficiently secured, the plate thickness must be increased for strength and sound and vibration countermeasures, which leads to an increase in vehicle weight and cost. .

Therefore, the present invention provides a rear suspension support structure capable of reliably supporting the left and right rear suspension mount brackets in the vehicle body width direction without increasing the weight and cost of the vehicle.

Means for Solving the Problems As a means for solving the above-described problems, the present invention provides a pair of rear suspension mount brackets that are respectively coupled to left and right rear side members, and the rear suspension mount brackets are mutually arranged in the vehicle width direction. In a vehicle that is coupled and supported, one end of each seat mount bracket coupled to the left and right mounting bases of the seat frame is coupled to each of the rear suspension mount brackets so that the left and right seat mount brackets and the seat frame are coupled to each other. It is intended to be supported through.

The seat frame extending in the vehicle width direction on the upper surface side of the floor is also used as a strength member that jointly supports the left and right rear suspension mount brackets, so that the strength in the vehicle width direction can be sufficiently maintained, and The strength member does not project to the center of the lower surface of the vehicle body.

Example An example of the present invention will be described below with reference to FIGS. The same parts as those shown in FIG. 4 are designated by the same reference numerals.

1 and 2, in the case of the suspension support structure according to the present invention, the rear suspension mount bracket 1
Are connected to the lower surfaces of the left and right rear side members 2 of the vehicle body, and the outer surfaces of the rear suspension mount brackets 1 are connected to the left and right side sills 5 via the outriggers 4 as shown in FIG. Although it is almost the same as the one described above, the way of coupling the left and right rear suspension mount brackets 1 to each other is greatly different.

In the figure, 6 is a bench type rear seat, and 7 is its seat frame. The seat frame 7 extends in the vehicle width direction, and its mounting base is bolted to the left and right seat mount brackets 9 with the floor 8 interposed therebetween.
The seat mount bracket 9 extends substantially L from the lower surface of the floor 8 in the lateral direction of the rear suspension mount bracket 1.
It extends in a letter shape, the upper portion of which is bolted to the seat frame 7 as described above, and the end portion on the vehicle outer side is joined to the rear suspension mount bracket 1. On the other hand, a channel member 10 is integrally connected to a side surface of the rear suspension mount bracket 1 on the center side of the vehicle body by means of bolting or the like, and the seat mount bracket 9 is attached to the channel member 10 by an end surface 9a and both side surfaces thereof.
9b is welded. Therefore, the seat mount bracket 9 is joined to the channel member 10 integrated with the rear suspension mount bracket 1 on both the pressure contact side surface (end surface 9a) and the shearing side surface (side surface 9b) against an input load in the vehicle width direction. There is. In the figure, 11 is a fuel tank and 12 is an exhaust tube.

Since the seat mount bracket 9 rigidly connects the left and right rear suspension mount brackets 1, the shear side surface (side surface 9b) is particularly effective for the connection to the channel member 10 and the pressure contact side. Face (end face
It is possible to eliminate the binding of 9a). Further, the connection between the side surface 9b of the seat mount bracket 9 and the channel member 10 is not limited to welding, but it is also possible to tighten the members with each other by the bolt 13 as shown in FIG.

With such a configuration, the left and right rear suspension mount brackets 1 are joined by the left and right seat mount brackets 9 and the seat frame 7. Since the seat frame 7 is originally a member having high strength, the left and right rear suspension mount brackets 1 do not need to be provided with a special strength member in the central portion of the floor 7.
Are securely supported. As a result, the fuel tank 11 and the exhaust tube are located in the center of the lower surface of the floor 8.
A large space for arranging 12 can be secured.

As described above, according to the present invention, the rear suspension mount brackets are supported by the left and right seat mount brackets and the high-strength seat frame, which leads to an increase in vehicle weight and an increase in cost. Instead, the left and right rear suspension mount brackets can be securely combined and supported in the vehicle width direction. In addition, since the strength member does not project to the center of the lower surface of the vehicle body, the degree of freedom in layout of other members such as the fuel tank and the exhaust tube on the lower surface of the vehicle body is increased.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG.
FIG. 3 is a perspective view of a portion II in the figure, FIG. 3 is a perspective view showing another embodiment, and FIG. 4 is a sectional view showing a conventional technique. 1 …… Rear suspension mount bracket, 2 ……
Rear side member, 7 …… Seat frame, 9 …… Sea mount bracket.

Claims (1)

[Claims] In a vehicle in which a pair of rear suspension mount brackets are respectively coupled to left and right rear side members and the rear suspension mount brackets are coupled and supported in the vehicle width direction, the left and right mounting bases of a seat frame are provided. A rear suspension support structure, characterized in that one end of each seat mount bracket to be joined is joined to each of the rear suspension mount brackets to support the rear suspension mount brackets via left and right seat mount brackets and a seat frame.