JPS629126Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for supporting a stabilizer bar incorporated into a vehicle suspension system on a vehicle body in order to suppress tilting of the vehicle body when the vehicle is turning or the like.

One of the conventional stabilizer bars is a torsion bar spring that is generally U-shaped and includes a center portion extending in the width direction of a vehicle body and a pair of side portions connected to the center portion. The both side portions are connected at their tips to a pair of swing arms for supporting left and right wheels, respectively, and the center portion is supported by the vehicle body via a pair of brackets.

In the stabilizer bar, when the left and right swing arms swing independently when the vehicle turns, the movement of each swing arm applies a torsional force to the center portion through the both side portions. The central portion, which receives this torsional force, suppresses the opposite-phase swinging motion of the pair of swinging arms due to its torsional elasticity, thereby suppressing the tilting of the vehicle body.

Therefore, in order to enhance the above-mentioned tilting suppression function of the stabilizer bar, the length of each side portion that transmits the motion of each swinging arm to the center portion is made as small as possible, so that the length of each side portion relative to the center portion is reduced as much as possible. The bending deformation of each side portion due to the movement of the swing arm is reduced, the rotation angle of each side portion is increased, and the span between the pair of brackets supporting the center portion on the vehicle body is increased. That is, the support point of the central portion by the bracket is installed as far outside as possible to reduce the bending deformation of the outer portion of the central portion located outward from the support point due to the movement of each swing arm. It is possible that

However, on the outside of the pair of brackets constituting the support points of the central portion, brackets for supporting the pivot shaft of the swinging arm on the vehicle body are respectively disposed, and brackets for supporting the central portion are provided. The bracket is separate from the bracket for the pivot of the swing arm and is fixed to the vehicle body independently of the bracket.
Therefore, the mounting position of the bracket supporting the central portion is limited in order to avoid interference with the bracket for the swing arm.
Therefore, it is not possible to set the length of each side portion small and the support span of the central portion sufficiently large, and this reduces the function of the stabilizer bar. This was compensated for by using springs, but this resulted in an increase in the weight and cost of the stabilizer bar.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a support device for a vehicular stabilizer bar, in which each side portion of the stabilizer bar is made shorter than before, and the center portion is supported on the vehicle body with a larger span than before. There is a particular thing.

In the present invention, each bracket for supporting the center portion on the vehicle body is supported on the vehicle body so that each pivot axis of the swing arm and the center portion of the stabilizer bar intersect with each other in a three-dimensional manner. The support span of the center portion can be increased and the length of the side portions can be reduced without causing an interference problem between the two brackets.

The features of the invention will become clearer from the following description of the illustrated embodiment.

In FIG. 1, a front wheel suspension is indicated generally at 10. The suspension system 10 includes a pair of swing arms (hereinafter referred to as lower control arms) 14 arranged on both sides of the vehicle body 12.
including.

Each lower control arm 14 is pivotally connected to the vehicle body 12 at its front pivot portion 14a and rear pivot portion 14b, and each control arm 14 is
Although not shown in the drawings, in cooperation with a conventionally well-known Atsupa control arm provided corresponding to each arm, the left and right front wheels accommodated in the tire house 12a, which is a wheel accommodation portion of the vehicle body 12, are controlled. An axle is supported on the vehicle body 12. Also, car body 1
Although not shown, well-known suspension springs and shock absorbers are provided between the lower control arms 2 and each lower control arm 14, so that each wheel is elastically supported by the vehicle body 12.

A stabilizer bar 16 made of a U-shaped torsion bar spring is disposed between both control arms 14. The stabilizer bar 16 includes a center portion 16a extending along the width direction of the vehicle body 12, and a center portion 16a that extends along the width direction of the vehicle body 12.
2 and a pair of side portions 16b extending forward of the vehicle body in the longitudinal direction, that is, in the front-rear direction. The distal end of each side portion 16b is connected to the corresponding left and right control arms 14 via a bracket 18 fixed to each control arm 14, as is well known in the art.

Front pivot portion 1 of each lower control arm 14
As in the conventional suspension system, the suspension 4a includes a pivot shaft 20 passing through the pivot portion 14a in the longitudinal direction of the vehicle body 12, and both ends of the pivot shaft are supported by brackets 21 fixed to the vehicle body 12. Furthermore, a well-known cylindrical elastic bushing 22 for vibration isolation surrounding the pivot shaft 20 is disposed in each pivot portion 14a.

Rear pivot joint 1 of each lower control arm 14
4b includes a pivot portion 24 that is integrally formed with the arm and extends rearward of the vehicle body 12 in alignment with the corresponding pivot shaft 20. Each pivot portion 24
are supported by the vehicle body 12 together with the center portion 16a of the stabilizer bar 16 via a pair of brackets 26 spaced apart from each other in the width direction of the vehicle body 12 and each fixed to the vehicle body 12.

Each bracket 26 has one side 2 extending in the same plane and at right angles to each other, as shown in FIG.
6a and the other side 26b. A bearing portion 28 for rotatably receiving the pivot portion 24 is formed on one side portion 26a of the metal fitting, and a bearing portion 30 for rotatably receiving the center portion 16a is formed on the other side portion 26b. is formed. Each bearing portion 28, 30 is in a perpendicular relationship with respect to the other bearing portion 28, 30.
Elastic bushes 32 and 34 for vibration isolation are arranged at 0. The corner of the bracket 26 where the both sides 26a, 26b meet and each bearing part 28, 30
A fastener 36 is provided on each side opposite the corner of the
A through hole 38 is provided for this purpose (see FIG. 1).

The pair of brackets 26 are each fixed to the vehicle body 12 via fasteners 36, and each bracket 26 has one of the bearings 28 connected to the bush 3.
2 through which the pivot portion 24 is received, and the other bearing portion 30 receives the central portion 16a through the bush 34.

In the suspension system 10, the stabilizer bar 16
The central portion 16a of each swing arm 14 has a bearing portion 28 for said pivot portion 24, which is one pivot of each swing arm 14.
is supported by the vehicle body 12 via an integrally formed bracket 26, which results in a shorter support span than the conventional bracket 40 shown in phantom in FIG. The support span at the central portion 16a of the stabilizer bar 16 increases by twice (2A) the length dimension shown by .

Therefore, when each swinging arm 14 generates an independent swinging motion around the pivot shafts 20 and 24 when the vehicle is turning, etc., the swinging motion of this arm 14 is coupled to the other arm, as in the conventional case. A torsional force is applied to the center portion 16a of the stabilizer bar 16 through the side portions 16b, but the bending deformation of the portion of the center portion 16a outward from the support point 30 due to the swinging movement of each swing arm 14 The amount will be smaller than before. However, Figures 1 and 2
Although it is possible to increase the span of the bracket 26 shown in the figure as described above, it is not possible to reduce the length of the side portion 16b of the stabilizer bar.

With the support device according to the invention shown in FIGS. 3 and 4, it is possible to increase the span and reduce the length dimension of the side portion 16b of the stabilizer.

The support device includes a bracket 42 for the pivot portion 24 and a bracket 44 for the central portion 16a.

The bracket 42, as clearly shown in FIG. 4, consists of a crank-shaped metal fitting and is fixed to the vehicle body 12 via fasteners 46 on both sides. A bushing 32 similar to that described above is housed within the bracket 42 for receiving the pivot portion 24 of the swing arm 14. bracket 42
The stabilizer bar 16 is mounted on the top 42a of the
A bracket 44 is coupled thereto which receives a bushing 34 similar to that previously described for receiving the central portion 16a of the holder.

A hook portion 48 is formed on one side of the bracket 44 to connect both the brackets 42 and 44.
An insertion hole 52 for a bolt 50 is formed on the other side of the bracket 44. Also, bracket 4
A locking hole 54 for receiving the hook portion 48 and a screw hole 56 for receiving the bolt 50 are provided in the top portion 42a of the second part.
The bracket 44 is connected to the bracket 42 via the hook portion 48 and the bolt 50.

on the bracket 42 so that each pivot portion 24 and the central portion 16a cross each other at right angles.
By joining the brackets 44, in addition to increasing the support span of the central portion 16a as described in conjunction with FIGS.
The position of the central portion 16a shown in FIG. 3 by the imaginary line (the position of the central portion 16a shown in FIG. 1 of the present application)
Since it can be disposed further forward of the vehicle body 12 by the length indicated by the symbol B, the length of each side portion 16b can be reduced by the length B. This reduction in the length of the side portion 16b reduces the amount of bending deformation of the side portion 16b accompanying the swinging of the swing arm 14, and also reduces the rotation angle of the side portion 16b with respect to the central portion 16a. In order to increase the size, the above-mentioned swing arm 14
The kinetic force can be made to act more effectively as a torsional force on the central portion 16a.

In the example shown in FIG. 3, a fastener 46 for the bracket 42 is located between the vehicle body 12 and the center portion 16a of the stabilizer bar 16. , said central portion 1
In order to shift the bracket 6a to the front of the vehicle body 12, it is desirable to change the attachment position of the bracket 44 to the bracket 42 to the front of the vehicle body 12.

As described above, the support device 4 according to the present invention
4 has been described as an example in which it is applied to a stabilizer bar provided in a front wheel suspension system, but it can also be applied to a stabilizer bar in a rear wheel suspension system.

According to the present invention, as described above, a pair of brackets for supporting the center portion of the stabilizer bar and a pair of brackets for supporting the pivot shaft of the swing arm are arranged such that the pivot shaft and the center portion are mutually connected to each other. By connecting them in a three-dimensionally intersecting manner, the stabilizer bar can be connected with a large support span that allows the stabilizer bar to fully perform its functions without causing interference between the two and complicating the assembly work. The central part can be supported by the vehicle body. Furthermore, each side portion of the stabilizer bar can be set to have a small length dimension. The side portions with smaller lengths have a smaller bending deformation than the side portions with larger lengths, and also have a larger rotation angle with respect to the center portion due to the swinging movement of the swing arm. An effective torsional force acts on the

Therefore, it is possible to effectively suppress the tilting of the vehicle body when the vehicle is turning, etc., without using a conventional large-diameter torsion bar spring as a stabilizer bar, thereby reducing the weight and cost of the vehicle. It is possible to improve the riding comfort of the vehicle without causing any problems.

[Brief explanation of the drawing]

FIG. 1 is a plan view schematically showing a wheel suspension system equipped with a stabilizer bar, and FIG.
FIG. 3 is a perspective view of the bracket shown in the figure;
The figures are similar to FIG. 1 showing an embodiment of the present invention, and FIG. 4 is an exploded perspective view of the bracket shown in FIG. 3. 12: Vehicle body, 14: Swing arm, 16: Stabilizer bar, 16a: Center part, 16b: Side part, 24: Pivot (pivot part), 26, 42, 4
4: Bracket.

Claims (1)

[Scope of utility model registration request] A central portion extending in the width direction of the vehicle body and arranged between a pair of left and right swinging arms each having a pivot shaft supported by the vehicle body via brackets on both sides of the vehicle body, each of which is fixed to the vehicle body; A device for supporting the center portion of a stabilizer bar on the vehicle body, comprising a pair of side portions connected to the center portion and each coupled to the corresponding swing arm, the device supporting the center portion of the stabilizer bar to the vehicle body, the device supporting the center portion of the stabilizer bar to the vehicle body in the direction in which the center portion extends. a pair of spaced apart brackets for receiving the central portion to support the central portion; each bracket having a spacer for each pivot such that the respective pivot axis intersects the central portion; A support device for a vehicle stabilizer coupled to said bracket of.