JPH0810011Y2 - Strut suspension - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a strut suspension, and in particular,
The present invention relates to a suspension in which a wheel carrier is supported by struts composed of shock absorbers and two links arranged in the lateral direction of the vehicle body at intervals in the longitudinal direction of the vehicle body.

(Prior Art) As a suspension for the rear wheel suspension of an FF vehicle, a wheel carrier is arranged laterally of the strut and the vehicle body.
Some are supported by book links. In this suspension, the strut is composed of a shock absorber, and a coil spring is arranged around the shock absorber. Further, a strut bar for restricting the movement of the wheel carrier in the front-rear direction, that is, a trailing arm is provided between the wheel carrier and the vehicle body (for example, Japanese Utility Model Publication No. 61-42304, Japanese Utility Model Publication No. 60304).
-103005).

(Problems to be solved by the invention) In the suspension, since the coil spring surrounds the shock absorber, a space for arranging the coil spring is required between the shock absorber and the vehicle body in the lateral direction of the vehicle body. Even if the passenger compartment is widened to improve the habitability, the space is limited to widen the passenger compartment.

Further, since two independent members, that is, a coil spring for reducing the vertical force applied to the wheel carrier and a trailing arm for receiving the longitudinal force are used, the number of parts is increased.

Therefore, an object of the present invention is to provide a strut type suspension that can expand the vehicle interior and reduce the number of parts.

(Means for Solving the Problems) The present invention provides a strut for supporting a wheel carrier by a strut composed of a shock absorber and two links arranged laterally of the vehicle body at intervals in the front-rear direction of the vehicle body. And a leaf spring that is disposed in the front-rear direction of the vehicle body so as to intersect with the two links and is swingably connected to the vehicle body, the leaf springs each including one of the two links. Is swingably connected about an axis extending in the front-rear direction of the vehicle body.

(Operation and Effect) When vertical vibration is applied to the wheel carrier, this vibration is transmitted from the two links to the leaf spring and is relieved by vertical displacement of the leaf spring. The leaf spring receives the longitudinal force applied to the wheel carrier.

Since the leaf spring functions as a coil spring,
The coil spring can be dispensed with, and the gap between the shock absorber and the vehicle body in the lateral direction of the vehicle body can be reduced. As a result, it becomes possible to laterally expand the passenger compartment.

Since the leaf spring functions as the conventional coil spring and trailing arm, the number of parts can be reduced.

Since the leaf spring and the two links are swingably connected about an axis extending in the front-rear direction, it is possible to prevent a twisting force from being applied to the leaf spring when the two links swing. This makes it possible to effectively operate the spring without lowering the durability of the leaf spring.

(Example) As shown in FIG. 1, the strut type suspension supports a wheel carrier 10 by a strut 12 and two links 14 and 16, and includes a leaf spring 18.

The wheel carrier 10 has a structure known per se for supporting the rear wheel 20.

The strut 12 is composed of a shock absorber. The shock absorber may be a twin tube type or a monotube type.
The strut 12 is rigidly connected to the wheel carrier 10 at its lower end, and its upper end is connected to a vehicle body (not shown) via a support 22 known per se.

The two links 14 and 16 are arranged in the lateral direction of the vehicle body with an interval in the longitudinal direction of the vehicle body. Two links 14, 16
Each outer end has a shaft 24 that extends in the longitudinal direction of the vehicle body.
Is swingably connected to the wheel carrier 10. Also, the inner ends 17 of each of the two links 14, 16
Is pivotally connected to the vehicle body via a rubber bush 26 by a shaft 28 extending in the front-rear direction of the vehicle body.

The leaf spring 18 is arranged in the front-rear direction of the vehicle body so as to intersect the two links 14 and 16. Leaf spring
A front end 19a of 18 is swingably connected to a vehicle body bracket, and a rear end 19b thereof is swingably connected to a shackle 30, and the shackle 30 is swingably connected to a vehicle body bracket.

The leaf spring 18 and the two links 14 and 16 are connected so as to be swingable around an axis extending in the front-rear direction of the vehicle body. In the embodiment shown in FIG. 2, two bearings are provided, in which a rubber bush 32 is attached to the link 14, the shaft 34 penetrates the bush 32, and the link 14 is sandwiched between the leaf spring 18 and the front and rear portions thereof. The shaft 34 is rotatably supported by 36, and the leaf spring 18 is swingable with respect to the link 14. The leaf spring 18 and the rear link 16 are swingably connected by the same structure.

When vertical vibration is applied to the wheel carrier 10, this vibration is transmitted from the two links 14 and 16 to the leaf spring 18 via the shaft 34 and the bearing 36, and is reduced by the leaf spring 18 being vertically displaced.

When a longitudinal force is applied to the wheel carrier 10, the longitudinal force is transmitted from the links 14 and 16 to the shaft 34 and the bearing 36 and is received by the leaf spring 18.

In this way, the leaf spring 18 functions as a coil spring and a trailing arm. When the two links 14 and 16 swing due to the bound and rebound, the leaf spring 18 swings with respect to the links 14 and 16 by the bush 32 and the shaft 34, and the leaf spring
Prevents prying force from being applied to 18.

In the conventional suspension, as shown in FIG. 4, the coil spring 52 surrounds the shock absorber 12, so that the vehicle body portion 54 is limited to be arranged outward. On the other hand, in the present invention, since the coil spring can be eliminated, the gap between the shock absorber 12 and the body portion 50 in the lateral direction of the vehicle body can be reduced as shown in FIG. This makes it possible to widen the body part by 1 compared to the conventional suspension.

[Brief description of drawings]

FIG. 1 is a perspective view of a strut suspension according to the present invention, FIG. 2 is an enlarged perspective view of a connecting portion of a leaf spring and a link, FIGS. 3 and 4 are rear views of the suspension, and FIG. FIG. 4 shows a conventional one according to the present invention. 10: Wheel carrier, 12: Strut, 14, 16: Link, 18: Leaf spring, 32: Bush, 34: Shaft.

Claims (1)

[Scope of utility model registration request] 1. A strut suspension in which a wheel carrier is supported by a strut composed of a shock absorber and two links arranged in the lateral direction of the vehicle body at intervals in the longitudinal direction of the vehicle body. A leaf spring that is arranged in the front-rear direction of the vehicle body and intersects with the two links, and that is swingably connected to the vehicle body. Strut suspension that is swingably connected around.