JP3701702B2 - Car stabilizer system - Google Patents

Description

[0001]
[Industrial application fields]
The present invention mainly relates to a stabilizer for an automobile that couples a pair of members that relatively freely swing around one axis and that generate a relative swing at a small angle also around another axis orthogonal to the axis. Relates to the device .
[0002]
[Prior art]
For example, when both ends of a stabilizer of an automobile are connected to a vehicle body side member such as a lower arm, a link is interposed between the link and the stabilizer. Oscillates in two directions. A ball joint is the most suitable joint that can freely support such multi-directional swinging and is frequently used, but has a drawback of high manufacturing cost.
[0003]
Therefore, a universal joint using an elastic body such as rubber is also used, and typical examples are shown in FIGS.
[0004]
FIG. 5 shows a structure in which a link a and a stabilizer c are connected via a rubber bush b, and there is an advantage that the structure is simple and the manufacturing cost is low. The rubber bush b is greatly elastically deformed in relative swinging around the axis, resulting in large play, and the anti-roll performance of the stabilizer c is poor.
[0005]
In FIG. 6, a bracket g is fixed to a link e and a bolt h is connected to a rubber bush f fitted to a stabilizer d, and the rubber bush f is swung around the center line of the bolt h having the largest swing angle. Has the advantage of little elastic deformation and small play, but has a disadvantage that the structure is complicated, there are many machining points, and the manufacturing cost is high.
[0006]
[Problems to be solved by the invention]
The problem to be solved by the present invention is that a conventional automotive stabilizer device using an elastic body has a large play or a high manufacturing cost.
[0007]
[Means for Solving the Problems]
As a means for solving the above-mentioned problems, the present invention provides a U-shaped stabilizer having a mounting hole having an axis x orthogonal to the arm swinging surface at the tip of each arm portion that is freely supported by the vehicle body, A pair of brackets fixed to a pair of lower arms that support a pair of tires so as to freely swing in a vertical direction, each having a mounting hole having an axis y parallel to the axis x, and fitted to each mounting hole of the stabilizer and the bracket . The bush made of an elastic body and the center hole of the bush with one end inserted through the center hole of the bush fitted into the mounting hole of the stabilizer and the other end fitted into the mounting hole of the bracket Is inserted into the bush, and the bush is sandwiched, and one end and the other end are parallel to each other and bent in a Z-shape .
[0008]
[Action and effect of the invention]
The present invention has the above-described configuration, and a bush is fitted into a mounting hole formed in a bracket fixed to a stabilizer and a lower arm, and a distal end portion of a link bent in a Z-shape is fitted into a central hole of the bush to freely rotate. Since the bush is sandwiched between the brackets , the brackets g and bolts h in FIG. 6 are not required, the structure is simple, the number of machining points is small, and it can be manufactured at a low cost close to the type in FIG. Since the link mainly swings relatively around the axis of the mounting hole of the stabilizer and the lower arm bracket , the elastic deformation of the bush is small and the play is as small as the type of FIG.
[0009]
【Example】
Hereinafter, an embodiment in which the present invention is applied to a connecting portion between a stabilizer and a lower arm of an automobile will be described with reference to FIGS.
[0010]
In the figure, reference numeral 1 denotes a substantially U-shaped stabilizer that is rotatably supported on a vehicle body (not shown) by a support 5, and a flat part 3 is formed at the tip of the arm part 2 on both sides, and the arm part 2 is at the center thereof. A mounting hole 4 having an axis x orthogonal to the swing surface is formed.
[0011]
Reference numeral 6 denotes a lower arm that supports the tire 8 freely swinging in the vertical direction around the fulcrum 7, and the bracket 9 is fixed on the upper surface near the tire 8 with the axis y of the mounting hole 13 parallel to the axis x. Has been.
[0012]
Reference numeral 10 denotes a link bent in a Z-shape so that the tip portions 11 on both sides are parallel to each other. The tip portions 11 on both sides are slightly cut to a small diameter to form a step portion 17, and a washer is formed on the step portion 17. 19 is applied to the mounting hole 4 at the tip of the stabilizer 1 and the mounting hole 13 of the bracket 9 through a bush 12 made of an elastic body such as synthetic rubber. A nut 15 is screwed onto the male screw 14 via a washer 16 so as to be attached to the stabilizer 1 and the bracket 9.
[0013]
In this embodiment, when the tire 8 moves up and down with respect to the vehicle body, the lower arm 6 swings around the fulcrum 7, and accordingly, the arm portion 2 of the stabilizer 1 swings around the support 5. Move.
[0014]
Then, the link 10 swings relatively large relative to the stabilizer 1 and the lower arm 6 about the axis x and the axis y, and relatively small and swings relatively in the plane including the axis x and the axis y. However, the bush 12 hardly undergoes elastic deformation in a relatively large relative swing about the axis x and the axis y, and a relatively small relative in-plane including the axis x and the axis y. Since the bush 12 is elastically deformed only during swinging, there is an effect that play is small and the anti-roll performance of the stabilizer 1 is good.
[0015]
The present embodiment relates to a connecting portion between a stabilizer 1 and a lower arm 6 of an automobile. However, the present invention is not limited to this, and the axis is relatively free to swing within one axis and the axis. The present invention can be widely applied to a case where a pair of members that cause a relative swing of a small angle around another axis orthogonal to the circumference are connected.
[0016]
FIG. 4 shows an embodiment in which the tip portions 11 on both sides of the link 10 are orthogonal to each other.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an outline of an embodiment of the present invention.
FIG. 2 is a partially cutaway front view of the main part.
FIG. 3 is a side view of the main part.
4 is a perspective view of another embodiment of the link 10. FIG. 5 is a cross-sectional view of a conventional example.
FIG. 6 is a cross-sectional view of another conventional example.
[Explanation of symbols]
1: Stabilizers 4, 13: Mounting hole 6: Lower arm 8: Tire 9: Bracket 10: Link 12: Bush

Claims (1)

A U-shaped stabilizer having a mounting hole having an axis x orthogonal to the arm part swinging surface at the tip of each arm part on both sides that is freely supported by the vehicle body, and a pair of tires that are freely supported to swing in the vertical direction. A pair of brackets each having a mounting hole fixed to a pair of lower arms and having an axis y parallel to the axis x;
A bush made of an elastic body fitted in each mounting hole of the stabilizer and the bracket ;
One end portion of the bushing is inserted through the center hole of the bush fitted into the mounting hole of the stabilizer to sandwich the bush, and the other end portion is fitted into the mounting hole of the bracket. A link that is bent in a Z-shape with the one end and the other end parallel to each other,
An automotive stabilizer device comprising:

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