JPS6056613A - Suspension device - Google Patents

Abstract

PURPOSE:To improve durability of a diaphragm through sufficient absorption of angular movement, transferred from the axle side, by means of a bearing, by a method wherein a mounting bracket is attached to a bearing placed to an outer shell. CONSTITUTION:A bearing 7 is attached to the outer side of a reduced part 2a of an outer shell 2, and a mounting bracket 8, which is adapted to be mounted to a member on the car body side or an axle member, is mounted to an outer race 7a of the bearing 7 directly or through the medium of a mount rubber. When a cylinder 1a is coupled to the axle side member of a vehicle, angular movement around the axis, transmitted to a cylinder 1a, is transmitted to the outer shell 2 through a diaphragm 5 and is absorbed by the bearing 7. This prevents high twist deformation of the diaphragm 5 occasioned by the angular movement of the cylinder 1a.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a suspension system.A conventional static suspension system used, for example, in an automobile is shown in FIG.

In the figure, 1 indicates a shock absorber, and the shock absorber 1 in this example includes a cylinder 1a and a cylinder 1a.
Separate the inside of a into two liquid chambers ii! ＋l Diagram showing a piston (not shown), an orifice and pulp provided in the piston (also not shown), and a piston rod 1 fixed to the piston
b.

Here, the piston rod 1b is attached to the outer shell 2 [F
Tll, and its tip end is hermetically connected to a rubber or rubber-like elastic body 3a that constitutes a part of the top wall 8 provided on the outer shell 2, and this top wall 8
has a mounting shaft 4 to the vehicle body that extends outward from a hard portion 8b around the elastic body. On the other hand, the cylinder 1a, which is connected to the axle side member by an eye (not shown) provided at the lower end, also has one end attached to the outer periphery of the cylinder 1a.
These cylinders are connected to the outer shell 2 by diaphragms 5 whose other ends are hermetically fixed to the outer periphery of the outer shell 2.
1) The J wall 8 and the diaphragm 5 constitute an air chamber 6 as an example of a gas chamber.

According to such a conventional device, by supplying and discharging compressed air to the air chamber 6, for example, the vehicle height is adjusted according to the magnitude of the load acting on the body side, and the load is transmitted to the suspension surface. Low-frequency, small-amplitude vibrations and large-amplitude vibrations are attenuated by the flow resistance of the FF body in the shock absorber and the volume change of the air in the air chamber. Due to viscous resistance, inertial resistance due to the cylinder 1a, piston, etc., the shock absorber 1 effectively
When high-frequency, small-amplitude vibrations that cannot be transmitted from the cylinder 1a to the piston rod 1b are transmitted from the cylinder 1a to the piston rod 1b, the vibrations of the piston rod 1b relative to the outer shell 2 are transferred to the top wall 3.
The elastic body 8a prevents the vibration from being transmitted to the vehicle body.

However, in this prior art, since the mounting shaft 4 provided on the hard part 8b of the jQ wall δ is directly fixed to the side wall of the vehicle body, the cylinder can be removed from the axle side member by, for example, steering the vehicle. When an angular motion as shown by arrow A in the figure around its axis is transmitted to 1a, it must be absorbed only by torsional deformation of the diaphragm 5, which reduces the durability of the diaphragm 5. There was a problem with a significant drop in performance.

The present invention provides a suspension system that advantageously solves the problems of the prior art.

The suspension system of Kono's invention is particularly effective by attaching an outer shell Nihair ring and providing a mounting bracket to the vehicle body or axle side to this bearing.
The angular movement transmitted to the cylinder or outer shell about its axis is absorbed by the bearing.

The present invention will be explained below based on the drawings.

FIG. 2 is a partial sectional view showing an embodiment of the present invention, and the same parts as in FIG. 1 are designated by the same numbers.

Here, a reduced diameter part 2a is provided at the upper end of the outer shell 2, and the tip of the piston rod 1b is airtightly connected to an elastic body 3a that constitutes the top wall 8 of this reduced diameter part 2a. A bearing 7 is attached to the outer side of the bearing 2a, and a mounting bracket 8 for attachment to a vehicle body side member or an axle side member is attached to the outer race 7a of the bearing 7, either directly or via a mounting rubber (Fig. In the illustrated example, it is provided at rM (tangential).

Note that the configuration of other parts is the same as that described with respect to FIG.

With the suspension system configured in this manner, vehicle height adjustment and absorption of vibrations including high frequency and small amplitude vibrations are performed in the same manner as in the conventional system. In addition, for example, when the cylinder 1a is connected to the axle side member of the vehicle,
The angular motion transmitted to the cylinder a about its axis is transmitted to the outer shell 2 through the diaphragm b, and then absorbed by the bearing 7. For this reason,
The angular movement of the diaphragm 5 does not cause a large torsional deformation in the diaphragm 5, nor is it transmitted from the mounting bracket 8 to the sidewalls of the vehicle body.

This also applies when the mounting bracket 8 is connected to the axle side crystal phase and the master cylinder 1a is connected to the vehicle body side member, respectively, and the diaphragm 5 is not damaged early due to its torsional deformation.

The present invention has been described above with reference to the illustrated examples. According to the present invention, only a part of the top wall is made of an elastic body, the position where the piston rod and the outer shell are connected by the elastic body, and the shape of the elastic body are changed. Make changes as necessary;
It is also possible to change the shape of the outer shell and the mounting position of the bearing as appropriate.

Therefore, according to the present invention, in particular, by attaching the outer sheer ring and providing a mounting bracket to this bearing, the angular motion transmitted from the axle side can be sufficiently absorbed by the bearing, so that the diamond This improves the durability of the plum and reliably prevents its angular motion from being transmitted to the vehicle body.

[Brief explanation of the drawing]

FIG. 1 is a partial sectional view showing a conventional example, and FIG. 2 is a partial sectional view showing an embodiment of the present invention. 1...Shock absorber 1a...Cylinder 1
b... Piston rod 2... Outer shell 8.
...Top wall 8a...Elastic body 5...Diaphragm 7...Bearing 8...Mounting bracket Patent applicant Brideston Tire Co., Ltd. 79-

Claims (1)

[Claims] 1 A shock absorber, an outer shell surrounding the piston rod of this shock absorber, a top wall provided on this outer shell and elastically connected to the piston rod, one end of which is connected to the cylinder of the shock absorber, and the other end of which is connected to the cylinder of the shock absorber. A suspension device comprising a diaphragm whose ends are hermetically connected to an outer shell, a bearing attached to the outer shell, and a mounting bracket provided to the bearing.