JPH08295109A - Suspension arm mounting structure - Google Patents

Abstract

PURPOSE: To improve workability when assembling and productivity of an arm by fixing an inner end of an interfering substance side of a suspension arm on a stud of a ball joint secured on the body. CONSTITUTION: A ball joint 4 of the inside end of an upper arm 1 comprises a socket 16 fixed on a cross member 5, a ball stud 15 dangling from the socket 16 toward the bottom of the body and a seat bearing. A tapered shaft of the ball stud 15 is inserted in a mounting opening 18 at inside end of the upper arm 1 by screwing down a nut 17 threading the tip of the ball stud 15. Therefore, when assembling, screwing operation of the nut 17 of the ball joint 4 can be performed from under the body, thereby ensuring sufficient space for tool and improving workability. Moreover, this can avoid effectively the interference of the upper arm 1 with a side member without changing a suspension point. Further, even if there is an interfering substance A, this can expand a span L because there is no need to secure space for tool.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arm mounting structure for an automobile suspension.

[0002]

2. Description of the Related Art FIG. 6 shows a conventional suspension structure.
There is a general double wishbon type suspension shown in.

According to FIG. 6, an upper arm 100 of type A is shown.
Similarly, the inner ends of the A-shaped lower arms 101 are swingably connected to the vehicle body side (not shown) via rubber bushes 102 in the wheel stroke direction (vertical direction), and the outer ends of both arms 100, 101 are connected. Each of them is connected to a knuckle arm 104 that supports a wheel via a ball joint 103.

Therefore, the knuckle arm 104 itself becomes swingable with respect to the upper and lower arms 100 and 101 in the stroke direction of the wheel, and the steering direction (left and right direction) of the wheel around the kingpin axis connecting the upper and lower ball joints 103. It becomes rotatable and supports the wheels. In the figure, reference numeral 105 is a shock absorber provided between the lower arm 101 and the vehicle body, and 106 is a drive shaft.

[0005]

However, in the suspension structure described above, the inner end of the upper arm 100 is connected to the vehicle body side via the rubber bush 102, so that, for example, as shown in FIG. When there is an interfering object (fuel tank filler neck, etc.) A in the area, it is necessary to secure a tool space for tightening the bolt 107 in the rubber bush 102, and therefore the span L between the suspension points cannot be wide. It was The span L between the suspension points is desired to be wide in terms of rigidity and strength. Further, in the case where the interference object A is a component such as a fuel pipe that should not be damaged during a collision, there is a problem because the heads of the bolts 107 that are projections face each other.

Further, as shown in FIG. 8, particularly in the case of a layout in which the I-shaped upper arm 100A interferes with the side member 108 and the like, the arm shape is offset from the reference axis C (see the distance D) to form a large bent shape. I needed to. Therefore, the arm type becomes large and complicated,
Productivity was bad. In this case, the side member 10
Since 8 and the like interfered with the work of tightening the bolt 107 on the rubber bush 102 and tightening it, the workability was poor. still,
In the figure, 109 is a cross member.

SUMMARY OF THE INVENTION An object of the present invention is to provide a suspension arm mounting structure which can improve the workability at the time of outfitting and the productivity of the arm.

[0008]

The suspension arm mounting structure according to the present invention is characterized in that the inner end of the suspension arm on the interfering object side is fixed to a stud of a ball joint mounted on the vehicle body side.

In particular, the suspension arm is I
The shape of the arm is simple in shape of the arm, which is preferable in terms of productivity. Further, it is preferable that the suspension arm is an A-shaped arm because the span between suspension points can be widened.

[0010]

According to the above construction, it is possible to avoid the obstacle by passing the arm to the offset position without changing the suspension point. Also, when the equipment is outfitted, it is tightened from the lower side of the vehicle body, which improves workability.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a suspension arm mounting structure according to the present invention will be described in detail below with reference to the accompanying drawings. 1 is a perspective view of a suspension structure showing a first embodiment of the present invention, FIG. 2 is a schematic view of a top view of FIG. 1, FIG. 3 is a schematic view of a rear view of the same, and FIG. 4 is a main part perspective view showing an operating state. It is a figure.

As shown in FIGS. 1 to 3, one of the inner ends of an A-shaped upper arm 1 (arm in front of the vehicle body).
Is connected to the side member 3 via the rubber bush 2, and the other (arm at the rear of the vehicle body) is connected to the cross member 5 via the ball joint 4, and the outer end of the upper arm 1 is connected to the wheel via the ball joint 6. It is connected to the upper end of a knuckle arm 8 that supports 7.

On the other hand, the inner end of the I-shaped lower arm 9 is connected to the cross member 5 via a rubber bush 10, and the outer end of the lower arm 9 is connected to the lower end of the knuckle arm 8 via a ball joint 11. To be done. still,
In FIG. 3, 12 is a toe control link, and 13 is a trailing arm.

Therefore, the knuckle arm 8 itself can swing in the stroke direction (vertical direction) of the wheel 7 with respect to the upper and lower arms 1 and 9, and the wheel 7 is centered on the kingpin axis connecting the upper and lower ball joints 6 and 11. The wheel 7 is supported by being rotatable in the steering direction (left-right direction).

As shown in FIG. 4, the ball joint 4 on the inner end side of the upper arm 1 has a socket 16 fixed to the cross member 5 and a ball stud 15 hanging downward from the socket 16 toward the vehicle body. By mounting a nut 17 that does not include a seat bearing and is screwed onto the screw shaft portion at the tip of the ball stud 15, the mounting hole 18 at the inner end of the upper arm 1 is fitted into the taper shaft portion of the ball stud 15.

With this construction, the work of tightening the nut 17 of the ball joint 4 is performed from the lower side of the vehicle body during fitting, so that a sufficient tool space is secured and workability is improved. Further, it is possible to effectively avoid the interference of the upper arm 1 with the side member 3 (without bending the arm largely) without changing the suspension point. Further, even if there is an interfering object A behind the ball joint 4 in the vehicle body, it is not necessary to secure a tool space, so that the span L between the suspension points can be increased. Furthermore, since the interference object A does not face a protrusion such as a bolt, it does not get damaged due to interference with the protrusion during a collision.

Next, FIG. 5 is a perspective view of an essential part showing a second embodiment of the present invention. This is an example in which the inner end of the I-shaped upper arm 1A is connected to the cross member 5 via the ball joint 4. According to this, similarly to the first embodiment, it is possible to effectively avoid the interference of the upper arm 1A with the side member 3 (without greatly bending the arm) without changing the suspension point. As a result, the arm shape is simplified and the productivity is improved.

[0018]

As described above, according to the present invention, the inner end of the suspension arm on the interferer side is fixed to the stud of the ball joint mounted on the vehicle body side, so that the suspension point is offset without being changed. The arm can be passed through the position to avoid obstacles, and the workability during outfitting and the productivity of the arm can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a suspension structure showing a first embodiment of the present invention.

FIG. 2 is a schematic diagram of the top view of FIG.

FIG. 3 is a schematic view of the same as the rear view.

FIG. 4 is a perspective view of an essential part showing the operating state of the same.

FIG. 5 is a perspective view of an essential part showing a second embodiment of the present invention.

FIG. 6 is a perspective view of a conventional suspension structure.

FIG. 7 is a perspective view of relevant parts showing a defect of the A-shaped upper arm.

FIG. 8 is a perspective view of relevant parts showing a defect of the same I-shaped upper arm.

[Explanation of symbols]

 1,1A Upper arm 3 Side member 4 Ball joint 5 Cross member 15 Ball stud 17 Nut 18 Mounting hole L Span between suspension points

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideki Endo 5-3-8, Shiba 5-chome, Minato-ku, Tokyo Inside Mitsubishi Motors Corporation

Claims (3)

[Claims] 1. An attachment structure for a suspension arm, characterized in that an inner end of the suspension arm on the interferer side is fixed to a stud of a ball joint attached to the vehicle body side. 2. The suspension arm mounting structure according to claim 1, wherein the suspension arm is an I-shaped arm. 3. The suspension arm mounting structure according to claim 1, wherein the suspension arm is an A-shaped arm.