JP2000193002A - Vibration control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase durability without occurrence of distortion at an elastic body having a thin wall between a mounted face and a mounting hole even if a high spring constant in an orthogonal direction is given. SOLUTION: In a vibration control device in which a mounted face 1A of an elastic body 1 is abutted against a planar mounting face using a bracket 10 and a mounting hole for inserting and mounting a baculiform object such as a stabilizer pierced into the elastic body 1 almost in parallel with the mounting face is formed, a protruding part 4 is integrally formed on the elastic body 1 at the mounted face 1A avoiding a thinnest part of a wall of the mounted face 1A to the mounting hole 2 of the elastic body 1 and the elastic body 1 supporting a mounted object is mounted using the bracket 10 so that the protruding part 4 may abut against the mounting face.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration damping device suitable for use in a vehicle suspension.

[0002]

2. Description of the Related Art As shown in FIG. 4, a conventional vibration isolator of this kind, for example, a bush for a stabilizer, is provided with an elastic body 10 by a bracket 101 on a flat mounting surface 100 of a vehicle body.
The elastic body 102 is provided with a mounting hole 104 through which the stabilizer rod 103 is inserted and supported substantially in parallel with the mounting surface 100. Had been formed.

[0003]

In the above-described vibration isolator, in order to increase the spring constant in the vertical direction, the total amount of the elastic body 102 is increased or the hardness of the elastic body is increased. Was. For example, as shown in FIG. 5, after inserting the rod 103 into the mounting hole 104 of the elastic body 102,
The elastic body 102 is compressed by the bracket 101, that is, the volume tightening amount of the elastic body 102 is increased from h to h '. When tightened in this manner, the portion indicated by the symbol a (the thickness between the mounting hole 104 of the elastic body 102 and the mounting surface 102A) is compressed between the rigid rod 103 and the mounting surface 100 of the vehicle. Portion), and the durability of the elastic body 102 was deteriorated.

Therefore, the present invention does not cause distortion in the thin elastic portion between the mounting surface and the mounting hole even if the spring constant in the direction perpendicular to the mounting surface is increased, and the durability is improved. It is an object of the present invention to provide an anti-vibration device with improved characteristics.

[0005]

In order to achieve the above-mentioned object, the present invention provides a bracket in which a mounting surface of an elastic body abuts on a planar mounting surface by a bracket and is substantially parallel to the mounting surface. In a vibration isolator that has a mounting hole through which a rod-shaped supported object such as a stabilizer is inserted and supported, the elastic body is attached to the mounting surface on the mounting surface, avoiding the thinnest part up to the mounting hole. A projection is integrally formed on the elastic body of the mounting surface, and an elastic body that supports a supported object by a bracket is mounted such that the projection contacts the mounting surface.

[0006]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

In the embodiment shown in FIG. 1, the elastic body 1 is mounted on a flat mounting surface 100 as shown in FIG.
A mounting hole 2 is formed in the elastic body 1 so as to penetrate the elastic body 1 almost in parallel with the mounting surface 100, and into which a rod-like supported object (not shown) such as a stabilizer is inserted and supported. It is. In addition, a slit 3 is formed on a side surface of the elastic body 1 in order to insert a rod-shaped supported object 103 into the mounting hole 2 as shown in FIG. Mounting surface 1 of elastic body 1
A projection 4 is formed integrally with the elastic body 1 at the portion of the mounting surface 1A except for the portion where the thickness of the portion A up to the mounting hole 2 is the thinnest.
Usually, the elastic body 1 is formed by vulcanizing rubber. The convex portion 4 is provided on both sides thereof at a position avoiding a portion where the line AA of FIG. 1 passes.
Two gentle arcs were formed. In this embodiment, the height of the projection 4 is 3 mm from the upper surface of the elastic body 1.

FIG. 2 shows a cross section taken along line AA of FIG.
Has a predetermined length along the axial direction. In this embodiment, the length is 32 mm. A Teflon canvas 5 is attached to the outer peripheral surface of the elastic body 1 and the inner peripheral surface of the mounting hole 2 at the time of vulcanization molding. Further, a groove 6 into which the bracket 10 is fitted is formed on a side peripheral surface of the elastic body 1 excluding the surface 1A to be attached.

FIG. 3 is a side view showing a place where the slit 3 is formed. The slit 3 is opened, and a stabilizer or the like is inserted into the mounting hole 2.

The mounting hole 2 has a circular vertical cross section in the above-described embodiment, but may have an elliptical shape or a polygonal shape. That is, it differs depending on the shape of the rod-shaped supported object such as the stabilizer. Even in this case, when assuming a flat mounting surface in which the projections 4 are not formed, the distance from the mounting hole 2 is not uniform. It is important that the short, that is, thin, part is overtightened (compressed) so that no distortion occurs in this part.

[0011]

As described above, according to the present invention, the projection is integrated with the elastic body in the portion of the mounting surface except for the thinnest portion up to the mounting hole of the mounting surface of the elastic body. Since the elastic body supporting the object to be supported by the bracket was attached to the mounting surface so that the convex portion came into contact with the mounting surface,
Even when the elastic body is compressed when the bracket is mounted on the mounting surface, no distortion occurs at the thinnest point between the mounting hole and the mounting surface, and the spring constant is improved by tightening, The durability of the elastic body can be improved.

[Brief description of the drawings]

FIG. 1 is a front view showing a preferred embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG. 1;

FIG. 3 is a side view.

FIG. 4 is a sectional view showing a conventional example.

FIG. 5 is a diagram illustrating a problem when a spring constant is increased in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Elastic body 1A Mounting surface 2 Mounting hole 4 Convex part 10 Bracket 100 Mounting surface

Claims (1)

[Claims] 1. A mounting surface of an elastic body is mounted on a planar mounting surface by abutment by a bracket, and a rod-shaped supported object such as a stabilizer is inserted into and supported by the elastic body substantially in parallel with the mounting surface. In the vibration isolator having a mounting hole formed therein, a projection is integrally formed on the elastic body on the portion of the mounting surface except for the thinnest part of the mounting surface of the elastic body up to the mounting hole. An anti-vibration device, wherein an elastic body that supports a supported object is mounted by a bracket such that the convex portion comes into contact with the mounting surface.