JPS647885B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in an independent rear suspension.

(Prior Art) As a structure of an independent rear suspension, the structure shown in the perspective view of FIG. 7 and the plan view of FIG. 8 is conventionally known.

In the conventional structure shown in FIGS. 7 and 8, the front end of the trailing arm 101 is connected to the rubber bush 1.
The trailing arm 1 is pivotally connected to the vehicle body frame (not shown) via the trailing arm 1.
A knuckle arm 103 is attached to the rear end of 01, and a wheel 106 is rotatably supported on the knuckle arm 103.

Further, one end of an upper arm 107 is connected to the upper end of the knuckle arm 103, and one end of a lower arm 108 is connected to the lower end thereof, and the other ends of the upper arm 107 and the lower arm 108 are connected to a vehicle body frame (not shown). .

Furthermore, a correction link 109 is provided in front of the lower arm 108 for correcting toe changes caused by vertical movements of the upper arm 107, lower arm 108, and wheel 106.

(Problems to be Solved by the Invention) However, in the conventional independent rear suspension shown in FIGS. 7 and 8, since the trailing arm 101 is a rigid body, it is necessary to correct the toe change. Lateral movement of the bush 102 at the front end of the trailing arm 101 is required. This lateral movement creates a resistance force in the bush 102 against the vertical movement of the trailing arm 101, and this resistance force causes the vehicle body to vibrate, thereby impairing ride comfort and causing noise. It was hot.

The present invention has been made to solve these problems, and its purpose is to reduce the amount of lateral movement of the bushing at the front end of the trailing arm, thereby increasing the resistance to vertical movement of the trailing arm. An object of the present invention is to provide an independent suspension type rear suspension that can improve riding comfort and reduce noise by reducing noise, and can also ensure the functionality of a trailing arm.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides an independent rear suspension comprising a trailing arm, an upper arm, a lower arm, and a correction link, in which the trailing arm is moved in the left-right direction of the vehicle body. The vehicle is constructed of a member having sufficient elasticity and high rigidity in the vertical direction, and is characterized by being provided with a stopper mechanism for restricting displacement of the trailing arm in the left-right direction of the vehicle body.

(Function) According to the independent rear suspension according to the present invention, the toe change due to the vertical movement of the wheel is
The correction is made by the lateral movement of the trailing arm due to the restraining action of the correction link, but since the trailing arm is deflected by the correction link, the lateral movement is caused by the lateral deflection of the trailing arm and the deflection of the bushing. It is a burden to bear. Therefore, the lateral movement of the bushing is reduced by the amount of lateral deflection of the trailing arm, and the resistance force generated in the bush against the vertical movement of the trailing arm is also reduced, making it possible to improve riding comfort and reduce noise. Furthermore, excessive lateral deflection of the trailing arm can be prevented, and the functionality of the trailing arm can be ensured.

(Example) Examples of the present invention will be described below based on the accompanying drawings.

FIG. 1 is a perspective view of an independent rear suspension according to the present invention, FIGS. 2 and 3 are plan views of the rear suspension, and FIGS. 4 to 6 show various embodiments of the present invention. FIG. 2 is a plan view of the independent rear suspension, particularly showing an embodiment of the stopper mechanism.

As shown in FIGS. 1 and 2, the trailing arm 1 is pivotally connected to the vehicle body frame (not shown) via a rubber bush 2 so as to be able to swing vertically. Knuckle arm 3 is attached with bolts 4... Also,
A wheel 6 is rotatably supported on a spindle 5 that projects outward from the knuckle arm 3.

The trailing arm 1 is made of a member that has sufficient elasticity in the left-right direction of the vehicle body and is highly rigid in the up-down direction, such as a leaf spring.

On the other hand, one end of an upper arm 7 is connected to the upper end of the knuckle arm 3, and one end of a lower arm 8 is connected to the lower end of the knuckle arm 3.
The other ends of the upper arm 7 and the lower arm 8 are
It is connected to a vehicle body frame (not shown). Further, a correction link 9 is disposed in front of the lower arm 8, and one end of the correction link 9 is connected to the knuckle arm 3, and the other end is connected to the vehicle body frame (not shown).

Thus, the toe change caused by the vertical movement of the wheel 6 is corrected by the lateral movement of the trailing arm 1 due to the restraining action of the correction link 9. 3, the lateral movement is borne by the lateral deflection of the trailing arm 1 and the deflection of the bush 2. As a result, the amount of lateral movement of bushing 2 is
Compared to conventional lateral movement, the lateral deflection of the trailing arm 1 is reduced, and the resistance force generated in the bush 2 against the vertical movement of the trailing arm 1 is also reduced, improving riding comfort and reducing noise. can be achieved.

Next, the stopper mechanism will be explained based on FIGS. 4 to 6.

As shown in FIG. 4, a stopper part 10 is attached to the side of the vehicle body.
By providing the portion a, even if the trailing arm 1 deforms as shown by the chain line in the figure, further deformation is prevented by contact with the stopper portion 10a, so that the trailing arm 1 Excessive lateral deflection can be prevented and the trailing arm 1
functions can be ensured.

As shown in FIG. 5, by providing a screw member 10b screwed onto the side of the vehicle body as a stopper, it is possible to prevent excessive lateral deflection of the trailing arm 1, and furthermore, the protruding length of the screw member 10b can be reduced. By changing the amount, the regulation value of the amount of lateral deflection of the trailing arm 1 can be adjusted.

As shown in FIG. 6, by providing the stopper members 10c on the trailing arm 1 itself, excessive lateral deflection of the trailing arm 1 can be prevented due to the contact between the stopper members 10c and the vehicle body.

According to this embodiment, the trailing arm 1 is made of a member that has sufficient elasticity in the left-right direction of the vehicle body and is highly rigid in the vertical direction, and further restricts the displacement of the trailing arm 1 in the left-right direction of the vehicle body. Since the stopper mechanism is provided, the amount of lateral movement of the bush 2 at the front end of the trailing arm 1 can be reduced, which reduces the resistance force against the vertical movement of the trailing arm 1, improving riding comfort and reducing noise. In addition, excessive lateral deflection of the trailing arm 1 can be prevented, and the function of the trailing arm 1 can be ensured.

(Effects of the Invention) As is clear from the above explanation, according to the independent rear suspension according to the present invention, it is possible to reduce the amount of lateral movement of the bush at the front end of the trailing arm. Since the resistance force against vertical movement is reduced, riding comfort can be improved and noise can be reduced, and excessive lateral deflection of the trailing arm can be prevented, ensuring the functionality of the trailing arm. can.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an independent rear suspension according to an embodiment of the present invention, FIGS. 2 to 6 are plan views of the rear suspension, and FIG. 7 is a conventional independent rear suspension. Perspective view of the pension;
FIG. 8 is a plan view of the same rear suspension. In the drawing, 1 is a trailing arm, 2 is a bushing, 3 is a knuckle arm, 7 is an upper arm, 8 is a lower arm, 9 is a correction link, 10
a, 10b, and 10c are stopper members.

Claims (1)

[Claims] 1. In an independent rear suspension consisting of a trailing arm, an upper arm, a lower arm, and a correction link, the trailing arm is made of a member that has sufficient elasticity in the left-right direction of the vehicle body and is highly rigid in the vertical direction. At the same time,
An independent suspension type rear suspension characterized by being provided with a stopper mechanism that restricts displacement of the trailing arm in the left-right direction of the vehicle body.