JPS6225984Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a suspension cross member mounting device for connecting and holding a front suspension cross member of an automobile body to a body frame.

First, an example of the structure of the front suspension cross member (hereinafter referred to as the front cross member) in the vicinity of the body frame mounting portion will be described with reference to FIG.

FIG. 1 shows a plane of the right front part of the vehicle body (the reference numeral F indicates the front of the center line). A right front wheel 5 is held on the lower arm 4 which is connected to the rear cross member 3 and is pivotally supported on the rear cross member 3.
The swinging end of is fixed to the lower arm 4.

In addition, a strut bar 7 is provided between the front cross member 2 and the rear cross member 3, and the input from the right front wheel 5 is applied to the front cross member 2 as a load via the bar 7. Therefore, the mounting portion A of the front cross member 2 is required to have connection rigidity that can withstand the above-mentioned wheel load.

For this reason, in the conventional mounting structure of the front cross member, reinforcing plates are stacked and expanded so as to wrap around the outer periphery of the side ends of the cross member, and at the same time, reinforcing plates are installed vertically through the front and back of the side ends. A structural method was adopted in which the pipe was arc welded and the upper end of a long bolt inserted through the pipe was screwed into a fixing nut welded to the body frame.

However, according to the conventional structure of such a method,
In addition to increasing the number of individual parts such as reinforcing plates and pipes, arc welding of the pipes also required a lot of man-hours, making it difficult to improve the productivity of the mounting structure.

The present invention has been devised to solve the above-mentioned difficulties, and an object of the present invention is to provide a suspension cross member mounting device with excellent manufacturability.

Hereinafter, the present invention will be explained based on an illustrated embodiment.

Figure 2 shows the mounting part A of the front cross member 2.
2 to 5, a lower plate 8 made of a rectangular flat plate is attached to the side end of the cross member 2, as shown in FIGS. 2 to 5. and frame-shaped bulkhead plates 9 and 2
Two parts are attached: an end molding material 11 formed by integrating a main pipe 10.

The partition plate 9 has a shape in which a flange surface 9b extends laterally from the four circumferences of a rectangular partition surface 9a, and semi-cylindrical recesses formed at two locations on the front and rear of the partition surface 9a. A pipe 10 is welded into the groove by spot welding.

On the other hand, two fixing nuts 12 are welded to the lower plate 1a of the body frame 1 at the front and rear, and communicating holes are made for the nuts, and each pipe of the molded material 11 fitted inside the cross member 2 Bolt through holes are formed at each location of the cross member 2 and the lower plate 8, which are in contact with the cross member 10.

In the illustrated assembly mode, the assembly bolts 13 each consisting of two long bolts are inserted through the through holes of the lower plate 8 into the inner holes of each pipe 10, and then
Its upper end is tightened to the nut 12, thereby
A side end of the cross member 2 is coupled and fixed to the lower plate 1a of the body frame 1.

In the mounting device of the embodiment configured in this way, the joint rigidity is reinforced by the action of the box-shaped structure of the molded material 11, so it is the same as the conventional reinforcing structure in which a plurality of polymeric plate materials are attached. It has a certain degree of joint rigidity or more, and in addition, only four parts are used, that is, the end molding 11, the lower plate 8, and two bolts 13,
Furthermore, arc welding is not required for assembly, etc.
There are various benefits.

As described above, according to the suspension cross member mounting device according to the present invention, the end molded material formed by integrating the frame-shaped bulkhead plate and the bolt insertion pipe is internally attached to the side end of the cross member. After fitting, the side end is connected to the body frame by screwing two long bolts, which reduces the number of parts used and simplifies the assembly process, increasing the manufacturability of the device. In addition, it has the effect of making it possible to reduce the weight and cost of the device.

[Brief explanation of the drawing]

FIG. 1 is a structural explanatory diagram of the vicinity of the mounting portion of the suspension cross member, and FIG. 2 is a side view of the suspension cross member mounting device showing an embodiment of the present invention, showing the portion shown in FIG. 1. A view corresponding to the side surface of A, FIG. 3 is a plan view of the same, FIG. 4 is a rear view taken along the - line in FIG. 2, and FIG. 5 is a perspective view of the end molding material in FIG. 2. . A...Suspension cross member mounting part,
1... Body frame, 1a... Lower plate, 2... Suspension cross member, 9... Bulkhead plate, 10
...pipe, 12...fixing nut, 13...bolt.

Claims (1)

[Scope of utility model registration request] In a cross member mounting device in which the left and right ends of the front suspension cross member are connected to the lower surfaces of the left and right body frames by tightening two long bolts lined up front and rear, the cross member has a closed cross section. It has a structure with both ends open, and near the opening at the end of the cross member, there is a partition surface having a shape substantially equal to the closed cross section in the direction perpendicular to the longitudinal direction of the cross member, and a partition surface of the same partition surface. A frame-shaped bulkhead plate having a flange extending from the periphery along the inner surface of the cross member toward the opening direction is fitted, and the long bolts are inserted into two places at the front and back of the bulkhead plate. A pair of pipes are welded all the way up and down, and the upper end of each long bolt inserted into the pipe from below is screwed into a fixing nut welded to the lower plate of the body frame. A suspension cross member mounting device characterized in that it is formed as follows.