KR19980021077U - Bush - Google Patents

Abstract

The present invention relates to a bush disposed in a connection part of a car body and a link of an automobile, and particularly in a bush that is forcibly fitted to a pipe of a ring, protrusions on both sides of the inner pipe so as to prevent the rubber vulcanized and bonded to the outpipe from being detached. Is related to the bush formed, and when the force is applied in the front and rear direction of the vehicle, such as during braking or bumping, so that the rubber is not separated from the inner pipe and the outpipe by the projection formed in the inner pipe is improved durability. .

Description

Bush

1 is a cross-sectional view showing a bushing applied to a conventional example,

2 is a perspective view showing a suspension device equipped with a bush applied to the present invention,

3 is a cross-sectional view showing a cross section of part A-A in FIG.

Explanation of symbols on the main parts of the drawings

10 link 11: pipe

21: inner pipe 22: rubber

23: Outpipe 31: Tightening Bolt

32: tightening nut 33: spring washer

41: bracket 42: bend

231: protrusion

The present invention relates to a bush disposed in a connection portion of a car body and a link of an automobile, and more particularly, to a bush that can improve durability by preventing the rubber from being vulcanized and bonded to the inner pipe and the out pipe.

In general, a bush disposed on a connection portion such as a vehicle body and a ring of an automobile and elastically supported is mounted by being forcedly fitted inside the pipe 6 fixed to an end of the link 1, as shown in FIG. Will be.

In addition, the bush that is forcibly fitted to the pipe 6 includes an outpipe 7 in surface contact with the inner surface of the pipe 6, and a rubber 8 vulcanized with the outpipe 7 and having elasticity. And, the rubber (8) is vulcanized and consists of an inner pipe (9) formed with a hole so that the fastening bolt (3) is inserted.

In addition, the bush consisting of the out pipe (7), the rubber (8) and the inner pipe (9) is forcibly fitted to the pipe (6) of the link (1) to the fastening bolt (3) and the fastening nut It is coupled with the bracket (2) by (4).

In addition, the fastening bolt (3) is provided with a spring washer (5) to prevent the fastening of the fastening nut (4).

Such a conventional bush has the rubber 8 vulcanized to the inner pipe 9 and the out pipe 7 when a force F is applied in the front and rear directions, such as during braking or ascending and climbing. There is a problem in that the durability is lowered by being separated from the inner pipe 9 and the out pipe 7.

The present invention was made in view of the above-mentioned problems, and the object of the present invention is to prevent durability of the rubber bonded to the inner pipe and the outpipe when the front and rear forces are applied, such as during braking or turning up and down. To provide a bush that can improve.

In order to achieve the above object, the bush according to the present invention is characterized in that protrusions are formed on both sides of the inner pipe so that the rubber vulcanized and bonded to the outpipe is not detached from the bush forcibly fitted to the pipe of the link.

According to the bush according to the present invention, when the force is applied in the front and rear direction of the car, such as during braking or turning, such as the rubber is not released from the inner pipe and the out pipe by the protrusion formed in the inner pipe This will be improved.

Hereinafter, an embodiment of the bush according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a perspective view showing a bushing suspension device applied to the present invention, and FIG. 3 is a cross-sectional view showing a cross section of part A-A of FIG.

In FIG. 2 and FIG. 3, reference numeral 10 denotes a link between the knuckle assembled to the brake drum 51 and the vehicle body 40 to support the vehicle body in the left and right direction. It is stuck.

In addition, the outpipe 21 is forcibly fitted to the pipe 11, and the rubber 22 made of an elastic material is vulcanized to the outpipe 21.

In addition, an inner pipe 23 having protrusions 231 formed on both sides of the rubber 22 may be disposed so that the rubber 22 is not separated from each other when the front and rear forces are generated, such as during braking or protrusion of the protrusion. have.

That is, the rubber 22 has the inner pipe 23 and the out pipe having protrusions 231 formed on both sides thereof so that the rubber 22 is not detached when the front and rear forces are generated, such as during braking or when the ascent is rising. It is vulcanized and between 21.

In addition, a bent portion 42 formed by bending around the fastening hole of the bracket 41 fixed to the body 40 is inserted inside the protrusion 231 of the inner pipe 23.

That is, the bent portion 42 accommodated inside the protrusion 231 of the inner pipe 23 is bent around the fastening hole of the bracket 41.

In addition, 31 is a fastening bolt inserted into the fastening hole of the bracket 41 and the inner pipe 23 to fasten the link 10 to the vehicle body 40, and 32 is the fastening bolt. A fastening nut screwed to (31), (23) is a spring washer to prevent the fastening of the fastening nut 21.

Reference numeral 52 denotes a trailing arm that supports the vehicle body 40 in the front-rear direction, and 53 denotes a shock absorber that supports the vehicle body 40 in the vertical direction.

Next, the operational effect of the bush according to the present invention configured as described above.

First, when the vehicle is driven, the vehicle body 40 is supported by the shock absorber 53, the link 10, and the trailing arm 52, so that vibration and shock are absorbed, so that the riding comfort is excellent.

On the other hand, when the front and rear forces (F) are generated as shown in FIG. 3, such as when the vehicle is running, such as braking or bumping, the shock and vibration generated by the front and rear forces due to the trailing arms 52, etc. Absorbed and extinguished.

In addition, when the forward and rearward force F is generated as described above, the rubber 22 mounted between the link 10 and the bracket 41 of the vehicle body 40 forces in the direction of the arrow shown in FIG. Will work.

At this time, the rubber 22 is restricted by the protrusions 231 formed on both sides of the inner pipe 23, and thus the rubber (vulcanized and bonded to the inner pipe 23 and the out pipe 21). 22 is not to be separated from the inner pipe 23 and the out pipe 21 is to improve the durability.

As described above, according to the bush according to the present invention, when the force is applied in the front and rear direction of the vehicle, such as during braking or turning up, the rubber is not separated from the inner pipe and the out pipe by the protrusion formed in the inner pipe. There is a very practical effect that durability is improved.

Claims (1)

In the bush that is forced into the pipe of the link, Protrusions are formed on both sides of the inner pipe so that the rubber vulcanized and bonded to the outpipe is inserted, and a bent portion formed by bending around the fastening hole of the bracket fixed to the vehicle body is inserted inside the protrusion of the inner pipe. Bush.