JPH0435269Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a mounting structure for a suspension arm, and in particular, the invention relates to a mounting structure for a suspension arm. This article relates to a structure for attaching the arm to the vehicle body.

(Prior Art) When a suspension arm having a substantially L-shape in plan view is provided with a shaft and an eye spaced from the shaft in the longitudinal direction, the suspension arm is attached to a brace of the vehicle body. After fitting the shaft into a bearing provided on the member, fitting a shaft of a shaft member formed independently from the brace member into the eye, and then,
The shaft member is assembled into the vehicle body by attaching it to the brace member. In this case, the shaft member and the brace member are attached by passing a bolt vertically through the shaft member from above or below the shaft member, and screwing the bolt into a nut (for example, Japanese Utility Model Publication No. 107676/1983). .

(Problem to be solved by the invention) When the shaft member is attached to the brace member by bolts extending in the vertical direction, the shaft member may slip due to lateral force applied from the tire to the shaft member via the suspension arm. To prevent this, it is necessary to tighten the bolts with high torque.

However, if a bolt is to be tightened with a high torque, the support structure for the nut will be required to have enough strength to handle the high torque. As described in the above-mentioned publication, when the brace member is formed of two plates spaced apart and the bolt passes through these plates, this can be handled by disposing a sleeve between the plates. However, when the brace member is formed of a single plate or a plurality of closely-adhered plates, a configuration in which a sleeve is disposed cannot be adopted. Therefore, a complicated structure is required in which the nut is held within the case and the case is fixed to the brace member.

Even if the above-mentioned measures are taken and the bolts are tightened to a high torque, if the bolts loosen for some reason, the shaft member will slip. In order to prevent this, it is necessary to increase the accuracy of bolt holes provided in the shaft member or brace member and to reduce the gap between the bolt and the bolt hole as much as possible, which also requires time and effort.

An object of the present invention is to provide a suspension arm mounting structure that can provide a large resistance to lateral forces applied from the suspension arm, thereby preventing the shaft member from slipping.

Another object of the present invention is to eliminate the need to improve the machining accuracy of bolt holes provided in the shaft member.
The object of the present invention is to provide a mounting structure for a suspension arm.

(Means for Solving the Problems) The present invention has a structure for attaching a suspension arm to a vehicle body, and includes a shaft member having a shaft for pivotally connecting the suspension arm, and a shaft member extending in the longitudinal direction of the vehicle body. It has two mounting pieces and includes a brace member that constitutes a part of the vehicle body. The shaft member is attached to the brace member by a bolt extending laterally through the two attachment pieces of the brace member, and a nut that is screwed into the bolt and tightened, and is clamped by the two attachment pieces. be done.

(Operation and Effect) When a lateral force acts on the shaft member from the tire via the suspension arm, displacement of the shaft member is prevented and slippage is prevented.

Since the shaft member is attached to the brace member by a bolt extending laterally and a nut screwed into the bolt, and is held between two mounting pieces, the lateral joint rigidity between the shaft member and the brace member is increased. increases. As a result, the lateral force applied from the suspension arm can be efficiently transmitted to the vehicle body.

Since it is sufficient to fix the shaft member to the brace member with one bolt in addition to the bolt passing through the mounting piece, it is possible to reduce the number of bolts and nuts.

(Example) As shown in FIG. 1, the mounting structure 10 connects the suspension arm 12 to the brace member 14 of the vehicle body.
and includes a shaft member 16.

The suspension arm 12 has a generally L-shaped planar shape (part of which is shown), which is known per se, and has a shaft 13a and an eye 13b on the same axis at its pivot point. is placed so that it is in front.

The brace member 14 is made of a plate material. In the illustrated embodiment, the brace member 14 has a forward attachment portion 15.
b, and a rear support portion 15c that projects laterally, and is formed so that the bottom surface has an L-shape. The mounting portion 15b is formed by bending both side portions extending in the front-rear direction of the vehicle body downward to form a U-shape as a whole, with the bent portions forming two parts.
There are two mounting pieces 15a. A shaft member 16, which will be described later, is held between the left and right mounting pieces 15a, as shown in detail in FIG.

The brace member 14 is fixed to the lower end portions of an inner front side member 18 made of a plate material and an outer front side member 20 made of a plate material.

In the embodiment shown in FIGS. 1 and 2, the inner front side member 18 has a base 19a and an upper end 19b bent outward in the lateral direction of the vehicle body from the base 19a. However, the outer front side member 20 includes a base 21a and a base 21a.
The upper end portion 21b is bent inward in the lateral direction of the vehicle body. The base portion 19a and the base portion 21a are spaced apart from each other in the lateral direction of the vehicle body, and are fixed with their upper end portions 19b and 21b overlapped. The base 19a and the base 21a are the first
As shown, they are joined by a forwardly disposed end 19c.

The mounting portion 15b of the brace member 14 is attached to the base 19a.
and the base 21a, the outer surface of each attachment piece 15a is brought into close contact with the opposing base, the inner attachment piece 15a and the base 19a are spot welded, and the outer attachment piece 15a and the base 21a are spot welded. The brace member 14 is integrated with the front side members 18 and 20 by spot welding.

In the embodiment shown in FIG. 3, the inner front side member 18 has a base portion 19a whose upper front portion protrudes forward in side view, and a base portion 19a that extends outward in the lateral direction of the vehicle body from the base portion 19a. An upper end 19b that is bent, and an end 1 that is bent outward in the lateral direction of the vehicle body from the base 19a.
9c. On the other hand, the outer front side member 20 is formed into a substantially flat plate shape. Ends 19b and 19c of front side member 18
The flange portions 19d provided on the front side members 18 and 20 are spot welded to the front side member 20, so that the two front side members 18 and 20 are integrated. 2
Each of the two front side members 18, 20 is provided with a hole 30 through which a link of the steering device passes.

The two mounting pieces 15a of the brace member 14 are arranged between the base 19a of the front side member 18 and the lower end of the front side member 20, and the outer surface of each mounting piece 15a is attached to the opposite base or end. The brace member 14 is closely spot welded.
are integral with the front side members 18, 20.

The bearing 22 is attached to the support portion 15c of the brace member 14.
The shaft 13a of the suspension arm 12 is fitted into the bearing 22. As mentioned above, since the suspension arm 12 has an L-shape and the tire mounting portion is in the lateral direction of the eye 13b, the lateral force transmitted to the shaft 13a and therefore the bearing 22 is small. Loosening of the bearing 22 due to lateral force is not a problem.

The shaft member 16 is formed by appropriately bending two plates and fixing the plates to each other so as to define a space inside the two plates. The shaft member 16 has a shaft 17 at a front end 17a that fits into the eye 13b of the suspension arm 12 and pivots the eye 13b. 1st
In the embodiment shown in the figure, the width of the shaft member 16 in the lateral direction of the vehicle body gradually decreases from the front end 17a to the rear end 17b, and the width of the shaft member 16 in the lateral direction of the vehicle body gradually decreases. It has a bottom shape that projects inward.

After the shaft member 16 has fitted the shaft 17 into the eye 13b of the suspension arm 12,
It is arranged between the two mounting pieces 15a, 15a of the mounting portion 15b of the brace member 14. bolt 24
As shown in detail in FIG.
is inserted into the other mounting piece 15a and the base 19a of the front side member 18 to penetrate in the lateral direction,
The shaft member 16 is attached to the brace member 14 by screwing and tightening the nut 26 onto the bolt 24. As a result, the front end 17a of the shaft member 16 is held between the two attachment pieces 15a of the brace member 14.

As in the conventional case, the rear end 17b of the shaft member 16 is fixed to the brace member 14 by a bolt 28 extending in the vertical direction and a nut 30 fixed to the brace member 14 by a case.

Conventionally, the shaft member was fixed to the brace member by a plurality of bolts extending in the vertical direction, but in the present invention, the front end 17a of the shaft member 16 is fixed to the bolt 24 extending in the lateral direction of the vehicle body. Since it is fixed by twisting, the bolt 2 in the vertical direction
One piece of 8 is sufficient.

[Brief explanation of the drawing]

Figure 1 is a bottom view of the mounting structure, Figure 2 is a sectional view taken along line 2-2 in Figure 1, and Figure 3 is a perspective view of the vehicle body. , which is different from the front side member shown in FIG. 10... Mounting structure, 12... Suspension arm, 14... Brace member, 15a... Mounting piece, 16... Shaft member, 17... Shaft,
24...Boruto, 26...Natsuto.

Claims (1)

[Scope of utility model registration request] A structure for attaching a suspension arm to a vehicle body, comprising a shaft member having a shaft for pivotally mounting the suspension arm, and two mounting pieces extending in the longitudinal direction of the vehicle body, and forming a part of the vehicle body. a brace member, the shaft member is attached to the brace member by a bolt extending laterally through two attachment pieces of the brace member, and a nut screwed into the bolt and tightened; A suspension arm mounting structure that is held by two mounting pieces.