JPS628806A - Vehicle suspension device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] 11L1 to 11mi The present invention relates to a vehicle suspension system.

[To the crotch 1i] Conventionally, in vehicle suspension systems that use rubber springs as elastic members, the rubber spring is constructed by bonding rubber to a flat restraining plate, so the thickness of the rubber Therefore, in a vehicle suspension system using such a rubber spring as an elastic member, a V rod is required to stop the movement of the axle in the left and right direction. However, this increases the weight of the vehicle suspension system as a whole, and in addition, conventional rubber springs have the problem that it is difficult to freely select the spring constants in three directions.

Therefore, the present invention solves the above-mentioned difficulties in conventional vehicle suspension systems using rubber springs, and reduces the total weight without requiring v lots. The object is to obtain a new and improved vehicle suspension system which can be made light and at the same time allows free selection of the spring constants in three directions.

. In order to achieve this object, the present invention has the following advantages:
In a vehicle suspension system that is elastically supported by rubber springs attached to a pair of brackets fixed to the chassis frame at the front and rear, the rubber springs have several cross-sectional shapes approximately It is composed of a V-shaped restraint plate and a rubber block that firmly connects the adjacent restraint plates to each other. The present invention features a vehicle suspension system that is interconnected by two torque rods.

By configuring the rubber spring in this way, it is possible to give the rubber spring rigidity not only in the vertical direction but also in the horizontal direction. Therefore, such a rubber spring can be used as an elastic member. The vehicle suspension system according to the present invention used as a vehicle suspension system can provide rigidity to the axle in the lateral direction as well as the longitudinal direction, so that the V-lot that was conventionally required can be made unnecessary.

1j-'' Hereinafter, the present invention will be described in detail based on FIGS. 1 to 4 of the accompanying drawings showing embodiments thereof.

First, as shown in FIGS. 1 and 2, the rubber spring used in the vehicle suspension system according to the present invention is made by bending a plate member having a substantially rectangular planar outline at the center in the width direction to form a substantially V-shape. Several restraining plates 10, 1□, 13゜1, formed to have a cross section of half of each plate member to be placed symmetrically with respect to this vertical plane, and each top edge extending vertically in this vertical plane through the center of the axle of the vehicle suspension to which it is attached. The rubber plates or rubber blocks 21, 2□, 2. are strongly bonded to each other.

The rubber spring 10 used in the present invention has such a configuration, and includes several restraining plates 11.~1.each having a V-shaped cross section. and the adjacent restraining plate I
ll~1. The rubber blocks 21 are firmly adhered to each other.
~2. Due to their cross-sectional shape, when a load is applied in the vertical direction, some of the rubber blocks 21 to 2
．． In addition to bearing the load partly due to the shear force of and partly due to the compressive force, each restraining plate 1. ~1. Similarly, when a load is applied perpendicularly to the horizontal direction to the top side of the restraining plates 11-1. and rubber work 21-2. Due to the special cross-sectional shape of the rubber block 2. ~2. can be borne by the shear and compressive forces of

In the present invention, the rubber spring 10 having such a structure and function is used as an elastic member to construct a vehicle suspension system as shown in FIGS. 3 and 4. That is, as shown in the figure, the chassis frame 11 of the vehicle
In the longitudinal direction of the axle 12, each bracket 13.
14, and a rubber spring 10. through these brackets 13 and 14. and 102 are arranged, and these rubber springs 10. ．． 102 supports the axle 12, and furthermore, a torque rod bracket 15 on the side of the axle 12 stands upright from the upper surface of the central portion in the longitudinal direction of the axle 12.
is installed so that its upper end reaches approximately the center of the height of the chassis frame 11, and
A torque rod 17 on the chassis frame side is fixed to approximately the center of a cross member 16 installed laterally on the chassis frame 11 in front of the I112, and the torque rod 17 on the axle side and chassis frame side The torque rod brackets 15 and 1f are connected to each other by a torque rod 18 so as to be able to rotate freely at both ends thereof. In this case, the rubber springs 10. placed before and after the axle 12. and 10'2 is the axle 1, as described above.
Each restraining plate 1.
~14, the extension line of their top side is this vertical center line
−X shall be installed so as to be inclined so as to intersect at the upper part. In addition, in FIG. 3, 20 indicates a wheel.

Since the vehicle suspension system according to the present invention has the above-described configuration, the load applied in the vertical direction from the chassis frame 11 to the axle 12 is absorbed by the rubber spring 10. ．． 1
These rubber bushings 10+ and 102 are not only elastically supported by 0□, but also provide rigidity in that direction against lateral loads applied in the longitudinal direction of the axle 12 between the chassis frame 11 and the axle 12. and axle 12
This is because it acts to stop the left and right movement of the body. Therefore, as shown by the two-dot chain line in FIG.
0 is unnecessary, and 1 torque rod 1 is installed on the instep.
7, it is possible to reduce the weight of the vehicle suspension system or the vehicle.

Since the present invention has the above-described configuration and operation, it is clear that the present invention can exhibit the following effects. In other words, 1. Since only one torque rod is required, the overall weight of the vehicle suspension system can be reduced. 2. The rubber spring used has a dynamic spring constant due to the friction force between the plates like a leaf spring. There is no increase in the apparent spring constant due to an increase in The lifespan can be increased. 4. There is no noise caused by squeaks that occurs when using leaf springs. 5. The rubber springs used are made with By appropriately selecting the profile, dimensions, etc., it is possible to select a wide range of spring constants in three directions, which significantly expands the degree of freedom in designing the vehicle suspension system.

The present invention is particularly suitable as a suspension system for vehicles such as trucks and buses, but in this case, it is not only suitable for suspension on one axis, but also on multiple axles.
It goes without saying that it is similarly applicable.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view of a rubber spring used in the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a main part showing one embodiment of a vehicle suspension system according to the present invention. The front view and FIG. 4 are its plan views. 11-1. ...restriction plate, 21-2. ...Rubber plate, t
o,,to□...Rubber spring, 11...Chassis frame, 12...Axle, 13°14...Bracket,
15.17...Torque rod bracket, 16...
Cross member, 18...torque rod.

Claims (1)

[Claims] 1. A vehicle suspension system in which a vehicle axle is elastically supported by rubber springs attached to a pair of brackets fixed to a chassis frame at the front and rear of the axle. In this case, the rubber spring is composed of several restraint plates having a substantially V-shaped cross section, and a rubber block that firmly connects the adjacent restraint plates to each other. 1. A vehicle suspension system, comprising a cross member fixed to a chassis frame at the front and connected to each other by a single torque rod. 2. The rubber spring is formed such that each of the restraining plates constituting the rubber spring has a substantially V-shaped cross section by bending a substantially rectangular plate member approximately at the center of its width; Further, the top sides of each restraining plate are arranged parallel to each other at intervals within a vertical plane, and half of each plate portion connected thereto is arranged symmetrically with respect to this vertical plane,
Furthermore, each restraint plate is arranged slightly offset in the vertical direction so that the closer it is to the axle, the lower it is, and at the same time, each top side is arranged so that its top edge is vertically offset from the vertical line passing through the center of the axle. 2. A vehicle suspension system according to claim 1, wherein the vehicle suspension system is arranged to be inclined in a crosswise manner. 3. Claims in which the torque rod on the axle side is formed in the longitudinal center of the axle so that it stands upright on its upper surface and its upper end reaches approximately the center of the height of the chassis frame. The vehicle suspension system according to item 1 or 2.