JPS5929506A - Trailing link type beam suspension - Google Patents

Abstract

PURPOSE:To improve the stability of a vehicle by holding the rolling angle of its car body as small as possible when the vehicle makes a turn by providing a stabilizer which generates moment resisting against the rolling of the car body caused by the upward or downward movement of the left and right wheels respectively. CONSTITUTION:A stabilizer 13 inserted into a hollow tube like axle beam 1 is composed as a torsion bar, and its one end A at the left hand side is fixed to the end L of the axle beam 1 so that it dosen't rotate each other by means of serration, etc. Also, the other end B is supported by the second end R of the beam 1 by means of a bearing 14 to be freely rotatable. Further, the end B protrudes from the second end R and a link 16 is interconnected between an anchor arm 15 and a trailing arm 9. Consequently, at the time of cornering, when one wheel, e.g., left wheel 4, tends to rise, an arm 6 turns upward around a front end 7, and in connection with this, the beam 1 rotates counterclockwise for the car body, and as a result, the rolling angle of the car body can be held small.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a trailing link type beam suspension, and particularly to a trailing link type beam suspension in which one of a pair of left and right trailing arms is fixed to an axle beam, and the other is rotatably connected to the axle beam. This relates to the beam suspension.

In such a trailing link type beam suspension, when the wheel on the negative side rises, the axle beam on that side rotates around the connecting part of the trailing arm to the vehicle body and rises. The rotation of the beam relative to the vehicle body or trailing arm is not transmitted to the trailing arm on the other side, so the wheels on the other side will not move up and down following the up and down movement of the wheels on the negative side. do not have. Therefore, it is particularly suitable as a rear suspension for front-wheel drive vehicles.

By the way, in general, in such a tongue-ring link type beam suspension, if the left and right trailing arms are allowed to swing freely and independently, the roll angle of the vehicle body increases when the vehicle turns. , running stability tends to deteriorate. Therefore, it is conceivable to use a stabilizer that does not have a spring effect when the left and right wheels move up and down at the same time, but generates a moment that resists when the vehicle body rolls.

When such a stabilizer is used, if it is simply provided between the left and right trailing arms, a special space is required for the stabilizer.

The present invention was made in view of the above-mentioned circumstances, and
The purpose of this is to provide a stabilizer that generates a moment that resists the relative swing between the left and right trailing arm spaces, but without requiring special space or using special parts. It is possible to obtain a tray link type beam suspension that can protect the vehicle.

In the present invention, a hollow axle beam is used, and the stabilizer is housed inside the axle beam.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.Axles 2 and 3 are fixed to the left and right ends of the axle beam 1, that is, the first end and the second end R, respectively. Left and right wheels 4 and 5 are rotatably supported on this axle 2.3, respectively. This axle beam 1 is arranged so as to be located below and behind the rotational axis O of the wheels 4 and 50.

The first trailing armour, located on the left side in FIG. Therefore, it is fixed to the first end of the axle beam 1.

The right second trailing arm 9 has a front end 10 connected to the vehicle body so as to be rotatable about one axis in the left-right direction, and a rear end 11 of the second trailing arm 9 connected to the axle 3, and hence the second trailing arm 9 of the axle beam 1. It is rotatably connected to the second end R via a swing bearing 12. When the wheels 4, 5 move up and down, these trailing arms 6.9 swing up and down centering on the connection part to the vehicle body to allow the movement, but when the wheels 4.5 and the vehicle body The back and forth movement between them is regulated.

The axle beam 1 has a hollow tubular shape, and a stabilizer 13 is fitted inside the axle beam 1. This stabilizer 13
is configured as a torsion bar, and one end A on the left side thereof is fixed to the first end of the axle beam 1 by serrations or the like so as not to rotate relative to each other.

Still, the right side (t A link 16, which serves as a control arm, is connected between an anchor arm 15 that protrudes from the end R and is integrally provided therewith, and the second trailing arm 9.

Arms 17.18 projecting forward are integrally provided at both left and right ends of the axle beam 1, and between these arms 17.18 and the vehicle body are rotatable DAN and CL3.20, respectively. is connected to. These Dannos si9, 2o are arranged so that their axes intersect near the rotation axis O of the wheels 4, 5, as shown in FIG.

The coil springs 21 and 22 that elastically support the space between the vehicle body and the axle beam 1 are
, 20 are arranged coaxially.

At the front of the axle beam 1, the wheels 4 and 50 have rotational axes O.
/'-pool rod 2 placed near the vertical plane passing through
One end of 3 is connected so as to be rotatable around an axis parallel to Y in the longitudinal direction of the vehicle body. This panhard rod 23
The other end is rotatably connected to the vehicle body, so that this knurled rod 23 restricts lateral movement between the axle beam 1 and the vehicle body.

Next, to explain the operation of this device, when the left and right wheels 4 and 5 move up and down simultaneously due to unevenness of the road surface, the left and right trailing arms 6°9 connect their front ends 7 and 10 to the vehicle body, respectively. It swings up and down at the same time around the center. The banner rod 23 also swings up and down about its connection to the vehicle body. Therefore, the axle beam 1 moves up and down while remaining parallel to the vehicle body, and its movement is absorbed by the coil springs 21, 22 and dampers 19 and 20.

The first trailing arm 6 on the left side pivots upward about its front end 7. Since the first end of the axle beam 1 is fixed to this trailing arm 6,
As the axle beam 1 rotates, the axle beam 1 rotates counterclockwise in FIG. 2 relative to the vehicle body. Therefore, the stabilizer 1 fixed to the axle beam 1
One end A of 3 also rotates in the same direction. On the other hand, since the second trailing arm 9 is rotatably connected to the second end of the axle beam 1, the rotation of the axle beam 1 is not transmitted, unless the wheels 5 move up and down. Trying to keep it the way it is. The other end B of the stabilizer 13 is
Since it is connected to this trailing arm 9 by the link 16, it will not rotate relative to the vehicle body unless the trailing arm 9 rotates. Therefore, at this time, twisting occurs between one end A and the other end B of the stabilizer 13,
This adds a moment that resists the movement between the left and right wheels 4 and 5. As a result, the roll angle of the vehicle body is kept small, improving driving stability.

When the right wheel 5 rises, the second trailing arm 9 swings upward, causing the other end B of the stabilizer 13 to rotate relative to the vehicle body.

On the other hand, unless the left wheel 4 moves up and down, the first trailing arm 6 does not swing, and the axle beam 1 and the negative end A of the stabilizer 13 fixed thereto do not rotate relative to the vehicle body. Therefore, twisting occurs between one end A and the other end B of the stabilizer 13, and the rise of the right wheel 5 is suppressed.

In this way, when one of the left and right wheels 4, 5 moves up and down, the stabilizer 13 applies a moment that resists the movement.

In addition, if the axes of the dampers 19 and 20 are arranged so as to cross the vicinity of the rotation axes of the wheels 4 and 5 as shown in this example, the difference in rotation angle between the left and right trailing arms 6.9 The difference in damping action between the dampers 19 and 20 can be kept small. In addition, the Panhard rod 23, the wheel 4,
By arranging the wheels 4 and 5 near the vertical plane passing through the rotation axis #ilO of No. 5, it is possible to reduce the amount of steering of the wheels 4 and 5 due to external forces in the left and right directions, and improve running stability.

As described above, according to the present invention, when the left and right wheels move up and down, and the vehicle body rolls, a stabilizer is provided that generates a moment that resists the roll. Therefore, the roll angle of the vehicle body is reduced when the vehicle turns, etc. This can improve running stability. Since the stabilizer is housed within the hollow axle beam, a special space for the stabilizer is not required, and the space can be used effectively.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional plan view showing an example of a trailing link type beam suspension according to the present invention, and FIG. 2 is a cross-sectional side view of the main part taken along the line ■--■ in FIG. 1. 1... Axle beam, 4, 5... Wheel, 6th mountain -
Trailing arm, 9... Second trailing arm, 13... Stabilizer, 16... Link, A
...one end of the stabilizer, B...the other end of the stabilizer, L...the first end of the axle beam, R...the second end of the axle beam Patent Applicant: Honda Motor Co., Ltd.

Claims (1)

[Scope of Claims] A hollow axle beam 1 to which left and right wheels 4 and 5 are rotatably connected to a first end R and a second end R respectively; A first trailing arm 6 fixed to a first end and connected to the vehicle body at the other end.
and a second trailing arm 9 whose one end is rotatably connected to the second end R of the axle beam 1 and whose other end is connected to the vehicle body; and a second trailing arm 9 that is fitted into the hollow axle beam 1. a stabilizer 13 having one end A fixed to the first end and the other end B rotatably supported to the second end R; the other end B of the stabilizer 13 and the second end B; A trailing link type beam the suspension comprising: a link 16 connecting a trailing arm 9;