JPH08156552A - Mounting structure of shock absorber - Google Patents

Abstract

PURPOSE: To reduce the mounting position of lower end of a shock absorber in a vehicle suspension structure having the absorber and to improve the strength at the mounting position. CONSTITUTION: Below an axle housing 1 a bracket 28 for mounting a lower control arm is mounted, and at the back of the bracket 28 a bracket for mounting a shock absorber formed in U shape in section in plane view is mounted, and in a space defined by the bracket 28 a lower end of the absorber 4 is inserted and supported pivotably by a bolt 35 supported by both brackets 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock absorber mounting structure in a suspension structure having a shock absorber.

[0002]

2. Description of the Related Art Various suspensions are provided for connecting a vehicle wheel to a body, one of which is a link type suspension composed of a combination of an upper control arm, a lower control arm, a spring and a shock absorber. is there. In such a suspension, the shock absorber is provided between the body side and the axle housing.

This shock absorber must secure a certain stroke in order to obtain the desired vibration damping characteristics. Therefore, in order to eliminate the protrusion to the passenger compartment and secure the stroke, the mounting position of the upper end of the shock absorber is limited, so that the mounting position of the lower end must be set lower.

FIG. 5 and FIG. 6 show a conventional mounting example of the shock absorber in the above case. In these figures, 1 is an axle housing, 2 is a wheel connected to an axle shaft in the axle housing 1,
Reference numeral 3 is a cross member on the body side.

The upper end of the shock absorber 4 is pivotally attached to the cross member 5 by a pin 7 via a bush 6.
A shock absorber mounting bracket 8 is attached to the axle housing 1. In order to increase the stroke of the shock absorber 4, the bracket 8 is provided so as to extend downward. Then, the lower end of the shock absorber 4 is attached to the pin 9 attached to the bracket 8 via the bush 10. As shown in FIG. 6, this attachment is carried out by inserting the pin 9 through the bush 10 and attaching the flat washer 11 and the spring washer 12 to the threaded portion 9a at the end thereof and screwing in the nut 13.

[0006]

However, in the mounting structure as described above, the lower end of the shock absorber 4 is cantilevered, which is disadvantageous in terms of strength, and if it is reinforced, the cost becomes high.

In order to gain the stroke of the shock absorber 4, the lower end of the shock absorber 4 should be mounted as low as possible. However, there is a risk of damage due to grounding, flying stones, etc. during off-road running. Pin 9
Since the repair may be difficult when the threaded portion 9a is damaged, the lower end mounting position of the shock absorber 4 cannot be set so much downward.

[0008]

The structure of the shock absorber mounting structure according to the first invention of the present application for solving the above-mentioned problems is to mount a lower control arm for mounting a lower control arm extending in the vehicle longitudinal direction on an axle housing. Bracket, a shock absorber mounting bracket fixed to the bracket and formed on the side opposite to the extending direction of the lower control arm, and a shock absorber having an end attached to a support member extending between the brackets. It is characterized by

The shock absorber mounting structure according to the second invention of the present application is such that, in the shock absorber mounting structure described above, the shock absorber mounting bracket is formed in a U shape, and both ends are provided on the rear surface of the lower control arm mounting bracket. It is characterized by being fixed.

A structure of a shock absorber mounting structure according to a third aspect of the present invention is characterized in that, in the shock absorber mounting structure, the lower control arm mounting bracket is mounted on a lower side of an axle housing. .

[0011]

According to the shock absorber mounting structure according to each of the above inventions, since the end portion of the shock absorber is supported by the supporting member extending between the lower control arm mounting bracket and the shock absorber mounting bracket, the strength is increased. Be advantageous to.

According to the shock absorber mounting structure of each of the above inventions, since the end portion of the shock absorber is surrounded by the lower control arm mounting bracket and the shock absorber mounting bracket, it is protected from the entire circumference. .

Further, according to the shock absorber mounting structure of each of the above inventions, since the support member to which the end portion of the shock absorber is mounted is supported by using the bracket for mounting the lower control arm, the structure is To be simplified.

According to the shock absorber mounting structure of the second aspect of the invention, the shock absorber mounting bracket is U-shaped and is fixed to the rear surface of the lower control arm mounting bracket. The absorber can be installed easily.

According to the shock absorber mounting structure of the third aspect of the invention, since the lower control arm mounting bracket is mounted on the lower side of the axle housing, the mounting position of the shock absorber mounting bracket is lowered, and the stroke of the shock absorber is reduced. It becomes possible to take large.

[0016]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a plan view of a shock absorber mounting structure according to one embodiment, and FIG. 2 is a view seen from the rear of the vehicle.
FIG. 3 shows a side view thereof, and FIG. 4 shows a perspective external view as seen from the front of the vehicle. In this embodiment, the present invention is applied to a shock absorber of an axle type suspension supported by four links.

In the figure, 1 is an axle housing,
The wheel 2 is attached to the axle shaft passing through it. On the upper side near both ends of the axle housing 1, a bracket 21 for attaching an upper control arm is attached. On the other hand, the frame 22 of the body
A bracket 23 for attaching the upper control arm is attached to the. One end of the upper control arm 24, which is a constituent member of the suspension, is connected to the frame 22.
Is attached to the bracket 23 of the through bush 25,
The other end is attached to the bracket 21 on the axle housing 1 via a bush 26.

A bracket 27 for mounting the lower control arm is provided on the lower surface of the axle housing 1. A bracket 28 for attaching a lower control arm is attached to the frame 22 of the body. One end of a lower control arm 29, which is a component of the suspension and extends in the front-rear direction of the vehicle, is connected to a bracket 28 on the frame 22 side via a bush 30, and the other end is attached to the bracket 28 of the axle housing 1 with a bush 31. Are connected through. The bracket 27 for mounting the lower control arm is located inside the bracket 21 for mounting the upper control arm in the vehicle width direction. In addition, the bracket 2 on the frame 22 side
3, 28 may be separate members or the same member.

The bracket 27 for mounting the lower control arm provided on the lower side of the axle housing 1 has a U shape when viewed from above, and its rear surface, that is, the bracket 27 for mounting the lower control arm. On the side opposite to the extending direction, a bracket 32 for attaching a shock absorber, which is U-shaped when viewed from above, is attached.

The upper end of the shock absorber 4, which is a component of the suspension, is attached to the pin 33 fixed to the cross member 3 via a bush 34. The lower end of the shock absorber 4 is inserted into the inside of the bracket 32, and the rear part 27a of the bracket 27 for mounting the lower control arm and the bracket for mounting the shock absorber are inserted through a bush 36 by a bolt 35 which is a supporting member. It is supported by the back surface portion 32 a of 32. To support the lower end of the shock absorber 4 with the bolt 35, the bolt 35 is passed from the rear surface 32a of the bracket 32 for mounting the shock absorber into the inside of the bush 36 at the lower end of the shock absorber 4, and the tip thereof is attached to the bracket 27 for mounting the lower control arm. It is made by penetrating the back surface portion 27a of the above and tightening the nut 37 there.

Incidentally, the axle housing 1 and the frame 22
A coil spring 41, which is a component of the suspension, is provided between and. Further, a lateral rod 42 for supporting a lateral load during turning of the vehicle is coupled between the axle housing 1 and the frame 22.

In the shock absorber mounting structure having the above-described structure, since the mounting position of the lower end of the shock absorber 4 is set to the brackets 27 and 32 provided on the lower side of the axle housing 1, the stroke of the shock absorber 4 is increased. Can be taken.

The periphery of the lower end of the shock absorber 4 is
Since the lower control arm mounting bracket 27 is surrounded by the rear surface 27a of the lower control arm mounting bracket 27 and the shock absorber mounting bracket 32, the bushes 36 and the like at the lower end of the shock absorber 4 are protected from grounding and flying stones during off-road running of the vehicle. It The stepping stones from the front are the back surface 27a of the bracket 27 for mounting the lower control arm.
Can be prevented by.

[0024]

According to the shock absorber mounting structure of each invention of the present application, the end portion of the shock absorber is
Since it is supported by the support member extending between the bracket for mounting the lower control arm and the bracket for mounting the shock absorber, it is also advantageous in terms of strength.

According to the shock absorber mounting structure of the second invention of the present application, the lower end portion of the U-shaped shock absorber mounting bracket is supported by using the rear surface of the lower control arm mounting bracket. As a result, the shock absorber can be easily attached, the structure is simplified, and the cost can be reduced.

Further, according to the shock absorber mounting structure of the third invention of the present application, since the lower end of the shock absorber is surrounded by the lower control arm mounting bracket and the shock absorber mounting bracket, the lower end of the shock absorber. It is possible to protect the bushes, screw parts, etc. of the vehicle from ground contact, flying stones, and the like when the vehicle is off-road running.

According to the shock absorber mounting structure of the third invention of the present application, the lower end of the shock absorber is attached to the lower control arm mounting bracket mounted on the lower side of the axle housing and the bracket mounted thereon. Since it is supported by, the stroke of the shock absorber can be increased.

[Brief description of drawings]

FIG. 1 is a plan view of a shock absorber mounting structure according to an embodiment of the present invention.

FIG. 2 is a view of the shock absorber mounting structure according to the embodiment of the present invention seen from the rear of the vehicle.

FIG. 3 is a side view including a partial enlargement of the shock absorber mounting structure according to the embodiment of the present invention.

FIG. 4 is a perspective view of a suspension to which a shock absorber mounting structure according to an embodiment of the present invention is applied.

FIG. 5 is a schematic view of an example of a conventional shock absorber mounting structure seen from the vehicle rear surface.

6 is a sectional view taken along the line AA of FIG.

[Explanation of symbols]

 1 Axle Housing 2 Wheel 3 Cross Member 4 Shock Absorber 21 Upper Control Arm Mounting Bracket 22 Frame 23 Upper Control Arm Mounting Bracket 24 Upper Control Arm 27 Lower Control Arm Mounting Bracket 28 Lower Control Arm Mounting Bracket 29 Lower Control Arm 32 Shock absorber mounting bracket 33 pins 35 bolts 37 nuts

Claims (3)

[Claims] 1. A lower control arm mounting bracket for mounting a lower control arm extending in a vehicle front-rear direction on an axle housing, and a shock absorber mounting fixed to the bracket and formed on a side opposite to a direction in which the lower control arm extends. A shock absorber mounting structure comprising a bracket and a shock absorber having an end attached to a support member extending between the brackets. 2. The shock absorber mounting structure according to claim 1, wherein the shock absorber mounting bracket is formed in a U shape, and both ends thereof are fixed to the rear surface of the lower control arm mounting bracket. 3. The shock absorber mounting structure according to claim 1, wherein the lower control arm mounting bracket is mounted on a lower side of an axle housing.