JPH0665633U - Stabilizer bearing device - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a stabilizer bearing device that can function as a conventional rubber cushion or rubber bush without generating abnormal noise. [Structure] A stabilizer bearing device 1 includes a synthetic resin cylindrical bush 4 having an inner peripheral surface 3 for slidably supporting a stabilizer 2, and a rubber elastic support member 5 for holding the cylindrical bush 4. A bracket 6 for tightening the elastic support member 5 holding the cylindrical bush 4 and fixing it to the vehicle body side
It consists of and.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bearing device for supporting a stabilizer on the vehicle body side, which is connected to a suspension arm side of an automobile through a ball joint or the like.

[0002]

[Prior art]

 A stabilizer for a vehicle is a torsion bar mounted between a suspension arm and a vehicle body so that a roll of the vehicle body causes a moment that resists the roll and does not act as a spring against vertical vibration of the vehicle body. -A spring that aims to improve the running stability by reducing the roll of the vehicle body. In general, the central portion of a U-shaped bar is used as a torsion bar spring, and both ends are used as its arms. Both end arms are attached to a suspension arm via ball joints or link rods, etc. The part is attached to the vehicle body via a rubber cushion or a rubber bush.

A rubber cushion or a rubber bush that supports the stabilizer tightly holds the stabilizer, allows the stabilizer to rotate when resisting the roll of the vehicle body, and supports the stabilizer from the road surface during traveling. It plays the role of mitigating the vibrations it receives and blocking the transmission to the vehicle body.

[0004]

[Problems to be solved by the device]

 In the rubber cushion or rubber bush that plays the above-mentioned role, when the stabilizer rotates, a stick-slip phenomenon occurs between the stabilizer and the rubber cushion or rubber bush, and an abnormal noise is often generated. There is a problem. This abnormal noise is unpleasant to the driver. As a method of preventing the generation of this abnormal noise, for example, the hardness can be increased by increasing the hardness of the rubber cushion or the rubber bush, but increasing the hardness of the rubber can be achieved by increasing the hardness of the rubber cushion or the rubber bush. One of the roles is to reduce the vibration damping capacity, and increasing the hardness of this rubber is not a good idea.

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

[0006]

[Means for Solving the Problems]

 According to the present invention, the object is a stabilizer bearing device for supporting on the vehicle body side a stabilizer connected to a suspension arm, the bearing device having a composite inner surface for slidably supporting the stabilizer. It consists of a resin-made cylindrical bush, a rubber elastic support member that holds the cylindrical bush, and a bracket that tightens the elastic support member that holds the cylindrical bush and fixes it to the vehicle body. It is divided at its part in the circumferential direction by a slit that extends in the axial direction, and the outer circumferential surface has a strip-shaped projection that extends in the circumferential direction and has a flat part that is cut out on the way. The elastic support member is formed so as to extend up to the slit, and the elastic support member is divided at that portion in the circumferential direction by the slit that extends in the axial direction. Is formed, and this recess is further formed with a recess having a shape complementary to the shape of the strip-shaped projection formed on the outer peripheral surface of the cylindrical bush. The stabilizer bearing, which is received in the concave portion of the support member, is fitted in the concave portion of the elastic support member and is embraced by the inner peripheral surface of the elastic support member by fitting the strip-shaped projection portion of the outer peripheral surface thereof. Achieved by the device.

In the present invention, as the synthetic resin forming the cylindrical bush, for example, polyester elastomer, polyurethane, or polyolefin resin, for example, polyethylene or polypropylene can be mentioned as a preferable example, but other resin, For example, 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 notched flat portion at a position facing the slit of the cylindrical bush. They may be provided individually on both sides in the direction or in addition to the above positions. Further, the thin portion may be formed by axially extending in the cylindrical bush on both axial sides of the flat portion cut out in the middle.

[0009]

[Action]

 In the bearing device of 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 expand the diameter of the cylindrical bush and the elastic support member, and the slits separated in this way are used. Attach these to the stabilizer, then fix the bracket to the vehicle body while tightening the elastic support member attached to the stabilizer and holding the cylindrical bush with the bracket, and attach the stabilizer connected to the suspension arm side to the vehicle body side. Support in. The cylindrical bush allows rotation of the stabilizer when resisting the roll of the vehicle body, and the elastic support member reduces vibration of the stabilizer received from the road surface during traveling and prevents transmission to the vehicle body side.

The present invention will now be described in more detail based on the preferred embodiments shown in the drawings. This proposal is in no way limited to these specific examples.

[0011]

【Concrete example】

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

As shown in detail in FIGS. 3 to 5, the cylindrical bush 4 is divided at its portion in the circumferential direction B by a slit 11 extending in the axial direction A, and an outer peripheral surface 12 thereof has a circular shape. A strip-shaped protrusion 13 extending in the circumferential direction B is formed to extend to the slit 11 with a flat portion 14 cut out in the middle. In this example, the portion 14 is provided at a position facing the slit 11 of the cylindrical bush 4, and the cylindrical bush 4 extends in the axial direction A on both sides of the portion 14 in the axial direction A, and has a thin wall portion 15. And 16 are formed. As shown in detail in FIGS. 6 to 8, the elastic support member 5 is divided at its portion in the circumferential direction B by a slit 21 extending in the axial direction A, and an inner circumferential surface 22 thereof has a cylindrical bush. 4 is formed, and a recess 24 having a shape complementary to the shape of the strip-shaped projection 13 formed on the outer peripheral surface 12 of the cylindrical bush 4 is further formed in the recess 23. The elastic support member 5 has flange portions 26 and 27 at both ends of the outer peripheral surface 25 in the axial direction A, and the bracket 7 is arranged in a recess 28 of the outer peripheral surface 25 surrounded by the flange portions 26 and 27. It has become so. The cylindrical bush 4 is received in the recess 23 of the elastic support member 5, and the strip-shaped projection 13 of the outer peripheral surface 12 thereof is fitted into the recess 24 of the elastic support member 5 so that the inner peripheral surface of the elastic support member 5. It is held by 22. As shown in FIG. 9, the bearing device 1 as described above supports, on the vehicle body 6 side, the stabilizer 2 connected to the suspension arm 41 side via the ball joint 42. The bearing device 1 is attached to the vehicle body 6 side by bolting the bracket 7 to the vehicle body 6 side while the elastic support member 5 is tightened.

In the bearing device 1, the cylindrical bush 4 having the inner peripheral surface 3 that makes frictional contact with the outer surface of the stabilizer 2 allows rotation of the stabilizer 2 in the C direction when resisting the roll of the vehicle body 6, The elastic support member 5 absorbs the vibration of the stabilizer 2 received from the road surface during traveling and prevents the transmission to the vehicle body 6 side. The flat portion 14 of the cylindrical bush 4 and the portion of the elastic supporting member 5 that abuts against the cylindrical bush 4 prevent rotation of the cylindrical bush 4 with respect to the elastic supporting member 5 in the C direction. In the bearing device 1 of this example, the rotation of the stabilizer 2 in the C direction does not cause the cylindrical bush 4 to be dragged and rotated in the same direction as the stabilizer 2 and the cylindrical bush 4 rotate. Between the rubber cushion and the rubber bush, the stick-slip phenomenon caused by the sliding between the rubber cushion and the rubber bush can be reliably eliminated without increasing the hardness of the elastic support member 5, and the generation of abnormal noise is eliminated. obtain.

Further, when mounting the bearing device 1 on the stabilizer 2, the slits 11 and 21 of the cylindrical bush 4 and the elastic supporting member 5 are attached to the stabilizer 2 so as to expand the diameter of the cylindrical bush 4 and the elastic supporting member 5. This is done by causing the stabilizer 2 to pass through the slits 11 and 21 separated from each other by more than the outer diameter of 2, and in the bearing device 1, the portion 14 becomes flat in the cylindrical bush 4 and the portion 14 becomes flat. Since the cylindrical bush 4 is thin, the slits 11 of the cylindrical bush 4 can be easily separated from each other, and even if the cylindrical bush 4 made of synthetic resin is provided, the bearing device 1 for the stabilizer 2 is provided. There is no deterioration in the wearability of. When 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-described example, the portion 14 and the thin portions 15 and 16 are formed at the positions facing the slit 11, but as shown in FIG. Even if symmetrical flat portions 51 and 52 and thin portions 53, 54 and 55, 56 are formed on both sides in the direction B, and the recesses 23 and the recesses 24 of the elastic support member 5 are formed correspondingly. Well, if two sets of flat portions and thin portions are formed in the cylindrical bush 4 in this way, it is possible to further easily separate the cylindrical bush 4 from each other at the slits 11, and to provide the bearing to the stabilizer 2. The wearability of the device 1 can be further improved.

[0016]

[Effect of device]

 As described above, according to the present invention, since the stabilizer is slidably supported via the synthetic resin cylindrical bush, the stick-slip phenomenon is prevented without damaging the vibration damping capacity of the elastic support member. Therefore, it can function as a conventional rubber cushion or rubber bush without generating abnormal noise due to stick-slip phenomenon, and can be easily attached to the stabilizer. It is possible to provide a bearing device capable of performing the above.

[Brief description of drawings]

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

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

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

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

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

6 is a side view of the elastic support member of the specific example shown in FIG. 1. FIG.

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

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

FIG. 9 is an explanatory diagram of a state in which 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]

 1 Stabilizer bearing device 2 Stabilizer 3 Inner peripheral surface 4 Cylindrical bush 5 Elastic support member 7 Bracket

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Yoshikazu Sakairi 8 Kirihara Town, Fujisawa City, Kanagawa Prefecture OILES CORPORATION

Claims (4)

[Scope of utility model registration request] 1. A bearing device for a stabilizer, which supports a stabilizer connected to a suspension arm side on a vehicle body side, wherein the bearing device is a synthetic resin cylinder having an inner peripheral surface for slidably supporting the stabilizer. The bush includes a rubber elastic supporting member that holds the cylindrical bush, and a bracket that fastens the elastic supporting member that holds the cylindrical bush to the vehicle body side. The cylindrical bush extends in the axial direction. It is divided by the slit at its part in the circumferential direction, and on its outer peripheral surface, a strip-shaped projection extending in the circumferential direction is formed by extending to the slit with a flat part cut out in the middle. The elastic support member is
It is divided at its part in the circumferential direction by a slit extending in the axial direction, and a concave portion for receiving a cylindrical bush is formed on its inner peripheral surface, and this concave portion is further formed.
A recess having a shape complementary to the shape of the strip-shaped projection formed on the outer peripheral surface of the cylindrical bush is formed.
A stabilizer characterized in that it is received in a concave portion of an elastic supporting member, and a strip-shaped projection on its outer peripheral surface is fitted in a concave portion of the elastic supporting member and held by the inner peripheral surface of the elastic supporting member. Bearing device. 2. The stabilizer bearing device according to claim 1, wherein the notched flat portion is provided at a position facing the slit of the cylindrical bush. 3. The stabilizer bearing device according to claim 1, wherein the notched flat portions are provided on both sides in the circumferential direction at positions facing the slits of the cylindrical bush. 4. The stabilizer according to any one of claims 1 to 3, wherein the cylindrical bush is formed with thin-walled portions extending axially on both axial sides of a flat portion cut out in the middle. Bearing device.