KR19980026374U - Lower arm bush of suspension - Google Patents

Abstract

The lower arm bush of the suspension device, which is installed at the connection between the body frame and the lower arm and absorbs shock and vibration, forms a separate stopper on the rubber member, thereby degrading assembling and causing breakage during transportation. To solve this problem. To this end, the lower arm bush 8 of the present invention is composed of a female inner pipe 5a and a male inner pipe 5b that are coupled by force fitting, and have a first rubber member 6a around each inner pipe. ) And the second rubber member 6b, and are made of a technical configuration that is detachable from the substantially middle portion.

Description

Lower arm bush of suspension

The present invention relates to a lower arm bush of a suspension device, and more particularly, to a suspension arm bush installed at a connection portion of a vehicle body frame and a lower arm to absorb shock and vibration.

As is well known, the suspension of an automobile supports the weight of the vehicle body and at the same time buffers the up and down vibrations of the wheels generated from the road surface, so that possible vibrations are not transmitted to the vehicle body.

The main function of such a suspension system is to (A) provide flexibility in the vertical direction of the vehicle so that the vehicle body can be driven on irregular roads without being affected by the pressure from the road surface,

(B) maintaining the road wheels in the proper position and condition to have a minimum load change with respect to the road surface;

(C) corresponding to the vertical and lateral forces and braking and driving forces generated by the tire,

(D) It is largely to suppress the vehicle body vibrations and to secure the running stability of the vehicle.

Such suspensions are structurally characterized as axle integral and independent.

Here, the lower arm structure of a typical independent suspension is shown well in FIG.

As shown, the lower arm 1 has a ball joint 2 coupled to a steering knuckle rotatably supporting the wheel, and mounting portions 3, 3 'on which the other end of at least two points are fixed to a subframe below the vehicle body. ) And a body connecting the mounting portions 3, 3 'and the ball joint 2 to each other.

The mounting parts 3 and 3 'of the lower arm 1 are mounted in a structure in which bolts passing through the center of the bush 4 are fixed to the subframe of the vehicle body via the bush 4.

2 shows a detailed structure of a bush 4 known in the art. The bush 4 inserted into the mounting portion 3 of the lower arm is composed of an inner pipe 5 through which the bolt penetrates, and a rubber member 6 covered around it.

The rubber member 6 is flanged in both directions to improve handling. In this case, the stopper 7 is provided on one side.

On the other hand, as one of the prior arts, a suspension arm bracket for mounting a suspension arm on a vehicle body frame via a bush is disclosed in Japanese Patent Application Laid-Open No. 7-21367.

In addition, the Republic of Korea Utility Model Publication No. 96-877 also forms a support plate on the cross member body, forms a female shaft on the opposite side of the ball joint installation portion connecting the steering knuckle of the lower arm body, and inserts a bush, the bush below A bush support plate enclosing the support plate, and the support plate and the bush support plate is fixed with a SEMEZ bolt, and the arm lower arm connection structure of the independent suspension device is fastened to the arm shaft is disclosed.

In the above-described lower arm bush of the prior art, a structure in which a stopper is separately provided and coupled to one side of the rubber member has poor assembly workability and has a problem in that separation occurs during transportation.

As proposed in order to solve the problems of the prior art, the present invention is configured to separate the bush, the assembly workability is improved, so that the separation can be prevented by being transported after separation.

1 is a perspective view showing a lower arm of a typical suspension;

2 is a cross-sectional view showing a conventional lower arm bush.

Figure 3 is an exploded perspective view of the inner pipe constituting the lower arm bush according to the present invention.

Figure 4 is a cross-sectional view showing a lower arm bush of the suspension according to the present invention.

Explanation of symbols on the main parts of the drawings

3-mount 5a-female inner pipe

5b-mail inner pipe 6a-first rubber member

6b-second rubber member 8-bush

In order to realize the above object, the present invention proposes a lower arm bush of a suspension device constituted by the following means.

That is, the present invention separates the other end of the lower arm, one end of which is fixed by a ball joint to the steering knuckle that rotatably supports the wheel, and the lower arm bush provided at the connecting portion of the subframe of the vehicle body by two male and female members. Formed technical configuration.

More specifically, the lower arm bush of the present invention is composed of a female and a female inner pipe coupled by force fitting, and a rubber member that is wrapped around each inner pipe.

According to this configuration, the bush of the present invention is improved in assemblability by press-fitting the female and the male inner pipe. In addition, since the two members are separated during transportation, loss due to separation is prevented.

Hereinafter, preferred embodiments for realizing the present invention will be described in more detail with reference to the accompanying drawings.

EXAMPLE

Figure 3 is an exploded perspective view of the inner pipe constituting the lower arm bush of the suspension device according to the present embodiment, Figure 4 shows the lower arm bush of the suspension device according to the present embodiment, of Figure 1 cited in the prior art Longitudinal section.

In describing the present embodiment, the same reference numerals are used for the configuration of the present embodiment, which is the same as the drawings cited in the prior art, and will not be described again for clarity.

In the drawings, reference numeral 3 denotes a mounting portion of the lower arm, and 8 denotes an entire bush.

The other end of the lower arm, one end of which is fixed by a ball joint to the steering knuckle on which the wheel is rotatably supported, is fixed via the bush 8 at least at two points with the subframe of the vehicle body.

Here, the lower arm bush 8 according to the present embodiment is formed to be separable into two male and female members, unlike in the prior art, so that the assembly workability can be improved and separated during transportation to prevent the risk of loss due to separation. do.

More specifically, the bush is composed of a female inner pipe (5a) and the male inner pipe (5b) through which bolts fixed to the subframe of the vehicle body are penetrated and coupled by force fitting.

Further, the first and second rubber members 6a and 6b which actually cushion the respective female and male inner pipes 5a and 5b are covered.

Based on the above-described configuration, the lower arm bush 8 of this embodiment includes a female bush composed of a female inner pipe 5a and a first rubber member 6a, a male inner pipe 5b and a second rubber member ( The assembly operation is performed by being joined by force indentation of the male member composed of 6b).

In addition, at the time of conveyance, the above-mentioned male and female bushes are separately separated, so that the conveyance is convenient.

Through the embodiments described above, it can be seen that the lower arm bush of the suspension device according to the present invention substantially solves the problems of the prior art.

That is, according to the present invention, the bush is composed of two separable members, thereby obtaining an effect of facilitating assembly work.

In addition, since it is transported in a separated state, it is possible to obtain the effect of preventing the risk of departure and loss.

On the other hand, the present invention is not limited to the above-described specific preferred embodiment, any person having ordinary knowledge in the field to which the subject innovation belongs without departing from the gist of the subject innovation claimed in the utility model registration claims Modifications may be made.

Claims (1)

A bolt fixed to the subframe in a lower arm bush of a suspension provided at the other end of a lower arm fixed at a ball joint to a steering knuckle on which a wheel is rotatably supported, and at a connection portion with a subframe of the vehicle body. It is penetrated, the lower arm bush of the suspension device, characterized in that composed of the female and the mail inner pipe coupled to each other by force fitting, and the rubber member is wrapped around the respective inner pipe.