JPS5813152Y2 - Anti-vibration bushing - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an anti-vibration bushing, and more particularly to an anti-vibration bushing suitable for use in a support device for a control arm on a vehicle body in an independent suspension system of an automobile.

In an automobile's independent suspension system, the upper end of a wheel that rotatably supports the wheel is connected to the top of a V-shaped upper control arm, for example, via a ball joint, and both arm ends of this control arm are connected by bolts. It is swingably supported on the vehicle body.

Conventionally, this swing support device can be roughly divided into two types: those using screw bushes and those using rubber bushes.

Screw bushings generally have good durability if lubrication conditions are maintained, but they are inferior to rubber bushings in terms of vibration isolation.

Also, if there is a large misalignment of the mounting parts, the screws will be twisted and the swinging will not be smooth, so the alignment of the mounting parts must be more severe than that of rubber bushings.

On the other hand, rubber bushings are superior in vibration isolation and insensitivity to misalignment, but are sometimes slightly inferior to screw bushings in terms of durability.

Therefore, a structure that can bear both radial load and thrust load, which is excellent in durability, vibration insulation, and insensitivity to misalignment, as shown in FIG. 1, has been considered.

That is, the support device shown in FIG. 1 includes an inner cylindrical body 6 having a radially expanding flange 5 at one end, and is attached to the outer periphery of the inner cylindrical body 6, and a flange 9 corresponding to the flange 5 of the cylindrical body 6 is attached at one end. a flange 9 of the rubber cylinder 10 that is fitted onto the outer periphery of the rubber cylinder 10;
An outer cylindrical body 1 formed at one end with a flange 11 corresponding to the
3 and an oilless bearing 2 baked into the inner periphery of the inner cylindrical body 6.

Another conventional support device is a cylindrical body (not shown) in which a threaded portion is formed on the inner periphery of the inner cylinder 6 instead of the oil-less bearing 2, and a threaded portion to be fitted to the threaded portion is formed on the outer periphery. It was more than that.

However, since the supporting device configured in this way has a rubber cylinder 10 having an integrally formed flange 9 interposed between the inner cylinder 6 and the outer cylinder 13, the comb cylinder 10 is The disadvantage is that the characteristics for the applied radial load, thrust load, and torsional load cannot be designed independently, the degree of freedom in design is small, and it is very difficult to design the inner cylinder 6, outer cylinder 13, and rubber cylinder 10. there were.

In view of the above-mentioned drawbacks of the conventional bushings, the present invention aims to provide a vibration-proof bushing whose characteristics for radial load, thrust load, and torsional load can be designed independently, and which can bear each load in an optimal state.

Hereinafter, the present invention will be explained in detail with reference to an embodiment shown in FIG.

In the description of this embodiment, the same parts as those of the conventional embodiment shown in FIG.

In the embodiment shown in FIG. 2, the main difference from the conventional embodiment shown in FIG. Reference numeral 10A denotes a stomper member 1 made of an elastic body such as a composite material such as rubber, synthetic resin, cloth, etc., which is interposed between the flange 5 of the inner cylindrical body 6 and the flange 11 of the outer cylindrical body 13.
4, a cylindrical rubber cylinder 15 interposed between the inner cylinder 6 and the outer cylinder 13, and a funsha-shaped rubber cylinder interposed between the stomper member 14 and the rubber cylinder 15. The hardness of the rubber cylinder 15 and the stopper member 14 is such that it can optimally bear the radial load, thrust load, and torsional load applied to the rubber cylinder 15 and the stopper member 14. The stomper member 14 is set to have a higher hardness than the rubber cylinder 15.

Further, the separating member 16 is connected to the stomper member 14 and the rubber cylinder body 1.
5 are prevented from coming together, and uses metal such as iron, asbestos, cloth sheet (polyester fiber), cloth sheet containing silicone, corrugated paper, etc.

To attach the vibration-proof punch IOA having the above structure between the inner and outer cylindrical bodies 6 and 13, the stomper member 14 is placed on the flange 5 of the inner cylindrical body 6, and the isolating member 16 is placed on top of the stomper member 14.

Thereafter, the outer cylinder 13 is arranged concentrically so that the flange 11 rests on the outer periphery of the inner cylinder 6 and on the separator 16.

The thus assembled product is placed in a mold, the mold is closed, and rubber is injected between the inner cylinder 6 and the outer cylinder 13 to form a cylindrical rubber cylinder 15.

As a result, the inner/outer cylinder body 11 equipped with the anti-vibration bushing 10A
can be formed.

In order to attach the inner/outer cylindrical body 11 thus formed to the vehicle body, the control arm 12 is attached to the outer periphery of the outer cylindrical body 130.

Note that the inner peripheral surface 6a of the inner cylinder 5 is provided with the inner cylinder 6 as in the conventional case.
Oil-less bear links and threaded portions are formed so that mutual rotation with bolts etc. to be inserted therein is smooth.

As is clear from the above description, in the present invention, there is a one-shape stomper member interposed between the flange of the inner cylinder and the flange of the outer cylinder, and a gap between the inner cylinder and the outer cylinder. Since it is constructed with a rubber cylindrical body interposed in the rubber cylinder body, it has the following effects.

(1) The hardness of the rubber cylinder and the hardness of the stomper member can be set arbitrarily.

Therefore, compared to conventional products that can only have the same hardness, the properties against thrust load, radial load, and torsional load can be fully satisfied.

(2) Since the rubber cylinder body and the stomper member are separated, the characteristics for thrust load, radial load, and torsional load can be designed independently.

Therefore, the degree of freedom in design increases and design can be made easily.

(3) By interposing both ring members between the stomper member and the rubber cylindrical body, the rubber cylindrical body can be vulcanized or press-fitted by injecting rubber dough into the rubber cylindrical body after the stomper member is attached.

Therefore, the molding process is simplified.

(4) Since the stomper part and the rubber cylinder have been separated, insert the stomper part between the flanges of the inner and outer cylinders, and then insert the rubber cylinder and rubber dough between the inner and outer cylinders. The inner and outer cylinders can be easily supported during vulcanization molding.

That is, in the conventional integrated structure, the inner cylinder and the outer cylinder must be supported through a space.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a conventional embodiment, and FIG. 2 is a sectional view showing an embodiment of the present invention. 5...flange, 6...inner cylinder body, 10
A: Anti-vibration bushing, 11: Flange, 13: Outer cylinder, 14: Stop collar member, 15: Rubber Cylindrical body, 16...
・Isolation material.

Claims (1)

[Scope of utility model registration request] is interposed between an inner cylindrical body having a radially expanding flange formed at one end, and an outer cylindrical body having one end formed with a flange corresponding to the flange of the inner cylindrical body on the outer periphery of the inner cylindrical body. In the anti-vibration bushing, the anti-vibration bushing is interposed between a stomper member in the shape of a lug, the anti-vibration bush being interposed between a flange of the inner cylinder and a flange of the outer cylinder, and the inner cylinder and the outer cylinder. What is claimed is: 1. A vibration-proof bushing comprising a rubber cylindrical body and a stopper member, further comprising an isolating material interposed between the rubber cylindrical body and a stopper member.