JP2575970Y2 - Stabilizer bearing device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing device for supporting a stabilizer connected to a suspension arm of an automobile via a ball joint or the like on a vehicle body.

[0002]

2. Description of the Related Art A stabilizer for an automobile is mounted between a suspension arm and a vehicle body so as to generate a moment against the roll of the vehicle body and to prevent a spring action against vertical vibration of the vehicle body. It is an object of the present invention to improve the running stability by reducing the roll of the vehicle body. And generally U
The central part of the bar bent in the shape of a letter is used as a torsion bar spring, and both ends are used as its arms.The both ends are attached to the suspension arm via ball joints or link rods, and the center is rubber Attached via a cushion or rubber bush.

[0003] A rubber cushion or a rubber bush supporting the stabilizer tightly holds the stabilizer,
It functions to allow and support the rotation of the stabilizer when resisting the rolls of the vehicle body and to reduce vibrations received from the road surface during traveling to prevent transmission to the vehicle body side.

[0004]

In the rubber cushion or the rubber bush that plays the role described above, a stick-slip phenomenon occurs between the stabilizer and the rubber cushion or the rubber bush when the stabilizer rotates. There is a problem that noise is often generated. This abnormal noise is uncomfortable for the driver. As a method of preventing the generation of this abnormal noise, for example, a tentative solution can be achieved by increasing the hardness of the rubber cushion or the rubber bush. It is not advisable to increase the hardness of the rubber by attenuating the vibration damping ability, which is one of the roles.

The present invention has been made in view of the above problems, and has as its object to obtain a stabilizer bearing device which can function as a conventional rubber cushion or rubber bush without generating abnormal noise. is there.

[0006]

According to the present invention, an object of the present invention is to provide a stabilizer bearing device for supporting a stabilizer connected to a suspension arm side on a vehicle body side, wherein the bearing device slidably moves the stabilizer. A cylindrical bush made of synthetic resin having an inner peripheral surface to be supported, a rubber elastic support member holding the cylindrical bush, and an elastic support member holding the cylindrical bush are tightened and fixed to the vehicle body side. The cylindrical bush is composed of a bracket, and the cylindrical bush is divided at that portion in the circumferential direction by a slit extending in the axial direction.On the outer peripheral surface, a band-shaped protrusion extending in the circumferential direction is provided.
The elastic support member has a flat portion cut out in the middle and extends to the slit, and the elastic support member is divided at that portion in the circumferential direction by the slit extending in the axial direction, and has an inner peripheral surface thereof. Is formed with a concave portion for receiving the cylindrical bush, and in this concave portion, a concave portion having a shape complementary to the shape of the band-shaped protrusion formed on the outer peripheral surface of the cylindrical bush is formed. The bush is received in the concave portion of the elastic support member, and the band-shaped protrusion on the outer peripheral surface thereof is fitted into the concave portion of the elastic support member and held on the inner peripheral surface of the elastic support member. This is achieved by a stabilizer bearing device.

In the present invention, as the synthetic resin forming the cylindrical bush, for example, polyester elastomer or polyurethane or a polyolefin resin such as polyethylene or polypropylene can be mentioned as a preferable example, but other resins such as polybutylene may be used. . The rubber material of the elastic support member may be either natural or synthetic.

According to the present invention, it is preferable to provide a flat portion cut off in the middle at a position opposed to the slit of the cylindrical bush. It may be provided singly or in addition to the above positions on both sides in the direction. Further, the thin portion may be formed in the cylindrical bush so as to extend in the axial direction on both sides in the axial direction of the flat portion cut out in the middle.

[0009]

In the bearing device according to the present invention, the axially extending slit portions of the cylindrical bush and the elastic support member are separated from each other so as to enlarge the diameter of the cylindrical bush and the elastic support member. These are attached to the stabilizer via the bracket, and then the bracket is fixed to the vehicle body while tightening the elastic support member attached to the stabilizer and holding the cylindrical bush with the bracket, and the stabilizer connected to the suspension arm side is attached to the vehicle body. Support on the side. The cylindrical bush permits the rotation of the stabilizer when resisting the roll of the vehicle body, and the elastic support member reduces the vibration of the stabilizer received from the road surface during traveling and prevents transmission to the vehicle body.

Next, the present invention will be described in more detail based on preferred embodiments shown in the drawings. The present invention is not limited to these specific examples.

[0011]

1 to 8, a stabilizer bearing device 1 of the present embodiment comprises a cylindrical bush 4 made of a synthetic resin having an inner peripheral surface 3 for slidably supporting a stabilizer 2, and a cylindrical bush 4. An elastic support member 5 made of rubber to be held and a bracket 7 for tightening the elastic support member 5 holding the cylindrical bush 4 and fixing it to the vehicle body 6 side.

The cylindrical bush 4 is divided at its part in the circumferential direction B by a slit 11 extending in the axial direction A, as shown in detail in FIGS. The band-shaped protrusion 13 extending in the circumferential direction B,
The slit 1 having a flat portion 14 cut out in the middle
It extends to one. In this example, portion 14 is
The cylindrical bush 4 is provided at a position facing the slit 11, and the cylindrical bush 4 is formed with thin portions 15 and 16 that extend in the axial direction A on both sides of the portion 14 in the axial direction A. The elastic support member 5 is divided at its part in the circumferential direction B by a slit 21 extending in the axial direction A, as shown in detail in FIGS. 4 is formed, and the recess 23 is further formed with a recess 24 having a shape complementary to the shape of the band-shaped protrusion 13 formed on the outer peripheral surface 12 of the cylindrical bush 4. The elastic support member 5
The outer peripheral surface 25 has flanges 26 and 27 at both ends in the axial direction A, and the bracket 7 is arranged in a recess 28 of the outer peripheral surface 25 surrounded by the flanges 26 and 27.
The cylindrical bush 4 is received in the concave portion 23 of the elastic support member 5, and the band-shaped protrusion 13 of the outer peripheral surface 12 is fitted into the concave portion 24 of the elastic support member 5, so that the inner peripheral surface 22 of the elastic support member 5 is formed. Embraced by The bearing device 1 as described above includes:
As shown in FIG. 9, the stabilizer 2 connected to the suspension arm 41 via a ball joint 42 is supported on the vehicle body 6 side. The mounting of the bearing device 1 to the vehicle body 6 is performed by, for example, bolting the bracket 7 to the vehicle body 6 with the elastic support member 5 tightened.

In the bearing device 1, the cylindrical bush 4 having the inner peripheral surface 3 that comes into frictional contact with the outer surface of the stabilizer 2
The rotation of the stabilizer 2 in the C direction when resisting the roll of the vehicle body 6 is allowed, and the elastic support member 5 reduces the vibration of the stabilizer 2 received from the road surface during traveling and prevents transmission to the vehicle body 6 side. . The flat portion 14 of the cylindrical bush 4 and the portion of the elastic support member 5 that comes into contact with the flat portion prevent rotation of the cylindrical bush 4 in the C direction with respect to the elastic support member 5. In the bearing device 1 of the present embodiment, the rotation of the stabilizer 2 in the C direction causes the stabilizer 2 and the cylindrical bush 4 to rotate in the same direction. And the stick-slip phenomenon caused by the sliding with respect to the rubber cushion or the rubber bush can be surely eliminated without increasing the hardness of the elastic support member 5, and the generation of abnormal noise can be eliminated. .

Further, when the bearing device 1 is mounted on the stabilizer 2, the portions of the slits 11 and 21 of the cylindrical bush 4 and the elastic support member 5 are adjusted so that the diameter of the cylindrical bush 4 and the elastic support member 5 is increased. Are separated from each other by more than the outer diameter of the slits 11 and 2 thus separated.
In the bearing device 1, since the portion 14 of the cylindrical bush 4 is flat and the cylindrical bush 4 at the portion 14 is thin, the slit 11 of the cylindrical bush 4 is formed. Can be easily separated from each other, and even if the cylindrical bush 4 made of synthetic resin is provided, the mounting property of the bearing device 1 to the stabilizer 2 does not deteriorate. In the case where the thin portions 15 and 16 are provided as in this example, the slits 11 of the cylindrical bush 4 can be separated from each other more easily.

In the above example, the portion 14 and the thin portions 15 and 16 are formed at positions opposed to the slits 11, but as shown in FIG. Symmetrically flat parts 51 on both sides of
, 52 and thin portions 53, 54 and 55, 56, respectively, and the corresponding recesses 23
When the two sets of flat portions and thin portions are formed in the cylindrical bush 4, the cylindrical bush 4 can be further easily separated from each other at the slit 11. In addition, the mountability of the bearing device 1 to the stabilizer 2 can be further improved.

[0016]

As described above, according to the present invention, the stabilizer is slidably supported through the synthetic resin cylindrical bush, so that the vibration damping ability of the elastic support member is not attenuated. It can eliminate the slip phenomenon, and can play the role of a conventional rubber cushion or rubber bush without generating abnormal noise based on the stick-slip phenomenon, and can be easily mounted on the stabilizer. A bearing device that can be provided can be provided.

[Brief description of the drawings]

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

FIG. 2 is a sectional view taken along line II-II of the specific example shown in FIG.

FIG. 3 is a perspective view of the cylindrical bush of the specific example shown in FIG.

FIG. 4 is a plan view of the cylindrical bush of the specific example shown in FIG. 3;

FIG. 5 is a sectional view taken along line VV of the cylindrical bush shown in FIG. 4;

FIG. 6 is a side view of the elastic support member of the specific example shown in FIG.

FIG. 7 is a sectional view taken along line VII-VII of the elastic support member shown in FIG. 6;

FIG. 8 is a cross-sectional view of the elastic support member shown in FIG.
It is a line sectional view.

FIG. 9 is an explanatory view of a state where the specific example shown in FIG. 1 is mounted on a stabilizer.

FIG. 10 is a perspective view of another preferred embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bearing device of stabilizer 2 Stabilizer 3 Inner peripheral surface 4 Cylindrical bush 5 Elastic support member 7 Bracket

Continuation of the front page (72) Inventor Yoshikazu Sakairi 8 Kirihara-cho, Fujisawa-shi, Kanagawa OILES INDUSTRY CO., LTD. (58) Field surveyed (Int.Cl. ⁶ , DB name) F16F 1/00-6/00 B60G 21 / 055

Claims (4)

(57) [Scope of request for utility model registration] 1. A bearing device of a stabilizer for supporting a stabilizer connected to a suspension arm on a vehicle body side, wherein the bearing device is a synthetic resin cylinder having an inner peripheral surface for slidably supporting the stabilizer. A bush, a rubber elastic support member holding the cylindrical bush, and a bracket for tightening the elastic support member holding the cylindrical bush and fixing the elastic support member to the vehicle body, and the cylindrical bush extends in the axial direction. It is divided at the site in the circumferential direction by the slit, and on its outer peripheral surface, a band-shaped projection extending in the circumferential direction is formed to extend to the slit with a flat portion cut off in the middle. And the elastic support member is
It is divided at the site in the circumferential direction by a slit extending in the axial direction, and a concave portion for receiving the cylindrical bush is formed on the inner peripheral surface thereof.
A recess having a shape complementary to the shape of the band-shaped projection formed on the outer peripheral surface of the cylindrical bush is formed.
The stabilizer is received in the concave portion of the elastic support member, and the band-shaped protrusion on the outer peripheral surface is fitted in the concave portion of the elastic support member and held by the inner peripheral surface of the elastic support member. Bearing device. 2. The stabilizer bearing device according to claim 1, wherein the flat portion cut out in the middle is provided at a position facing the slit of the cylindrical bush. 3. The stabilizer bearing device according to claim 1, wherein the flat portions cut out in the middle are provided on both sides in the circumferential direction at positions opposed to the slits of the cylindrical bush. 4. The stabilizer according to claim 1, wherein the cylindrical bush is formed with a thin portion extending in the axial direction on both sides in the axial direction of a flat portion cut out in the middle. Bearing device.