JPS5830728Y2 - Trailing arm type wheel suspension system - Google Patents

Description

[Detailed description of the invention] The present invention relates to a tray link arm type wheel suspension system (2,
In particular, the present invention relates to a recessed tray link arm type wheel suspension system that improves vehicle maneuverability.

One of the conventional wheel suspension systems is a full trailing type two-wheel suspension system.

The suspension system is provided with a pair of trailing axles for wheels.
It is supported so as to be able to swing vertically via a pivot shaft installed in the width direction of the vehicle body parallel to the vehicle body width direction.

By the way, shocks caused by the wheels coming from the road surface are transmitted to the trailing wheels as vibrations.

Since the transmission of this vibration to the AiQ cylinder body causes noise in the city, the transmission of this vibration to the vehicle body is prevented.1. ．． ．． +
7- The pivot point of the trailing arm to the vehicle body, including the pivot shaft, should be fitted with a vibration-proof/□ elastic body 4
It is.

However, since the elastic body is deflected by the lateral force acting on the wheel during cornering of the vehicle, the rigidity of the lateral side P of the trailing arm, that is, the width direction of the middle 8 body is reduced. The conventional suspension system has a disadvantage in that it reduces the maneuverability of the vehicle.

Therefore, the first object of the present invention is to provide a trailing wheel suspension system that can improve the ride quality without causing a decrease in the maneuverability of a vehicle. .

In the present invention, the L-1 (which is swingably supported by the L-body)
In a wheel suspension including one trailing arm,
One end of a pair of beam members arranged in alignment with each other in the width direction of the vehicle body is fixed to each tray link arm, and the other end of the beam member is fixed to the vehicle body. l
y, the trailing arm L of the front Ae 2"J is connected at the connecting part, so that a rigid quadrilateral is formed by the connecting member, the -24 beam member, and a part of the pair of trailing arms. Configuration L, All aL'', hThe lateral force applied to the railing arm is mainly applied to the beam member 1 of the above -χ''.
1CjE↓ase/17. It is characterized by

The features of the present invention will become clearer from the following description of the embodiments shown.

In FIG. 1, a wheel suspension according to the present invention is generally designated by the reference numeral 10 when viewed from above the vehicle.

In the suspension system 10, one shaft 14 is disposed in the width direction of the vehicle body 12, and bushings 16 made of an elastic body for vibration isolation are fixed to both ends of the shaft.

Each bushing 16 has a bracket 17 fixed to the vehicle body 12.
Even if the receiver is inputted, this causes the shaft 14 to
is supported by the vehicle body 12 via the bush 16.

A pair of trailing arms 18 are attached to the shaft 14.
is supported.

Each of the trailing arms 18 is arranged parallel to each other and orthogonal to the shaft 14, and is swingable in the vertical direction about the shaft 14 near its front end.

An axle 22 of a wheel 20 is provided outside the rear end of each trailing arm 18 .

Both trailing arms 18 are connected to each other via a connecting member 24 made of a rigid material.

In the illustrated example, the connecting member 24 is made of a tube loosely fitted onto the shaft 14, and each end is fixed to each trailing arm 18.

At the tip of each of the trailing arms 18,
As shown in FIG. 2, a pair of beam members 26 are connected to the shaft 14 toward the vehicle front side and arranged parallel to the shaft.

The beam member is made of a highly rigid bar spring member, and the beam members extend in the width direction of the vehicle body 12 between both trailing arms 18 with their axes aligned with each other, and one end of each of the beam members located outside the vehicle is opposite to each other. The trailing arm 18 is fixed to each trailing arm 18.

Further, the other end of each beam member 26 is fixed to the vehicle body 12 via a bracket 28 provided on the vehicle body 12.

As a result, the vicinity of the tip of the trailing arm 18, the connecting member 24, and the pair of beam members 26 form a rigid quadrilateral.

In the suspension system, when the vehicle runs, the wheels 20
When a vertical impact or the like acts on the trailing arm 18, the trailing arm 18 swings vertically about the shaft 14, but this acting force is stopped as a bending moment or a torsional moment of the beam member 26. Therefore, due to the spring action of the beam member 26, the wheel 20 is
2 is suitably supported by an elastic body.

In addition, the independent swinging of both trailing arms 18 is suppressed by the rigidity of the connecting member 24 since twisting force is applied to the connecting member 24.

Therefore, the vehicle body does not tilt significantly even when the vehicle turns.

Further, when the vehicle turns, a lateral force acts on the wheels 20, but this lateral force is mainly absorbed by the beam member 26 as a compressive force or a tensile force in its longitudinal direction.

That is, as shown in FIG. 1, when a lateral force indicated by F acts on one of the wheels 20, this lateral force F is mainly absorbed as a tensile force by one of the beam members 26 located on the left side of the figure. .

Therefore, the lateral force is not concentrated on the pivot point of the trailing arm to the vehicle body, that is, the bush 16, as in the conventional case, and the lateral rigidity of the trailing arm 18 is increased.

Further, vibrations acting in the longitudinal direction of the trailing arm 18 are absorbed by the elastic deformation of the pusher 1160 disposed at the pivot point of the shaft 14 to the vehicle body 12 and the deflection of the beam member 26, and this vibration is directly absorbed. It is not transmitted to the vehicle body 12.

As shown in FIG. 3, the pair of beam members 26 are connected to the shaft 14 and a connecting member 24 loosely fitted to the shaft.
It can be placed closer to the rear of the vehicle.

In the example shown in FIG. 3, the lateral force F is mainly received as a compressive force by one of the beam members 26 located on the left side in the figure.

According to the present invention, as described above, by having the beam member mainly bear the lateral force acting on the trailing arm, a soft push is applied to the pivot point of the trailing arm to the vehicle body for vibration isolation. However, the lateral rigidity of the trailing arm is not impaired.

Therefore, transmission of vibration to the vehicle body can be effectively prevented without deteriorating the maneuverability of the vehicle, thereby improving the ride quality of the vehicle.

[Brief explanation of drawings]

FIG. 1 is a plan view schematically showing a trailing arm type wheel suspension according to the present invention, and FIG. 2 is a longitudinal cross-sectional view taken along line H-H shown in FIG. , FIG. 3 is a drawing similar to FIG. 1 showing another embodiment of the present invention. 12...Car body, 14...Axis, 16.
...Elastic body, 18 ... Trailing arm, 20 ... Wheel, 22 ... Axle, 24 ... Connection member, 26 ... ...Beam members.

Claims (1)

[Scope of utility model registration request] A pair of trailing wheels supported by the vehicle body via an elastic body, swingably supported by the vehicle body via a pivot shaft disposed in the width direction of the vehicle body, and provided with a wheel shaft. a pair of beam members disposed between each trailing arm and the vehicle body so that their axes coincide with each other; the beam members are disposed in the width direction of the vehicle body; a pair of beam members having tongues and other ends fixed to the vehicle body; and a pair of beam members located between the trailing arms, parallel to the beam members, and having both ends fixed to each of the tray link arms. A tray link arm type wheel suspension system comprising a connecting member.