KR20040055132A - Stop rubber for use in a shock absorber - Google Patents

Abstract

PURPOSE: A stop rubber of a shock absorber is provided to improve durability by preventing stress concentration caused by local deformation with uniformly deforming each rubber member by repressing radial deformation with a net interposed between rubber members and to reduce shock noise without increasing material strength of the rubber member. CONSTITUTION: A stop rubber of a shock absorber installed on a stopper of a piston rod to absorb shock noise generated in rebounding is composed of a plurality of rubber members(12) put one on another and three nets(14) interposed between the plural rubber members to repress the radial deformation. The nets are adhered between the rubber members by an adhesive agent, integrally layered and combined with each rubber member by heat-pressing and then combining force is increased through a vulcanizing process.

Description

R STOP RUBBER FOR USE IN A SHOCK ABSORBER}

The present invention relates to a stop rubber of a shock absorber, and more particularly, to a stop absorber of a shock absorber mounted on a stopper for adjusting the stroke of a piston rod to absorb shock noise generated when rebounding.

In general, shock absorbers (shock absorbers), both ends are fixed to the axle and the body to perform the function of improving the ride comfort and running stability by preventing the axle from being transmitted to the vehicle body by absorbing the vibration or shock received from the road surface when the vehicle is running.

1 is a cross-sectional view showing the inside of a conventional shock absorber, Figure 2 is an enlarged view showing an extract of the conventional stop rubber shown in FIG.

As shown in FIG. 1, the shock absorber includes a piston valve 1 for separating the inside of the cylindrical tube 2 into a tension chamber 3 and a compression chamber 4, and a linear reciprocating motion of the piston valve 10. Piston rod (5) and the body valve (9) provided in the lower portion of the cylindrical tube (2).

2, a stopper 6 is installed on the piston rod 5, and a stop rubber 7 is installed on an upper surface of the stopper 6.

In the conventional shock absorber configured as described above, when the piston valve 10 is linearly reciprocated, a pressure difference is generated between the tension chamber 3 and the compression chamber 4, and the pressure difference between the tension chamber 3 and the tension chamber 3 is reduced. The fluid filled in the compression chamber 4 generates a constant damping force through a process of circulating through the flow path formed in the piston valve 1 and the body valve (9).

At this time, the stroke of the piston rod 5 is adjusted by the stopper 6, and the noise generated when colliding with the rod guide 8 generated at the time of rebound by the stop rubber 7 provided on the upper surface of the stopper 6 Will absorb.

Since the stop rubber 7 is frequently subjected to a large load as compared to a small size, it is difficult to satisfy the durability.

Therefore, in order to improve durability, the durability of the stop rubber is increased by increasing the contact area of the stop rubber or by adjusting the material strength of the stop rubber. However, when the space is narrow, there is a limit to increasing the contact area. , The method of adjusting the strength of the material had the following problems.

In other words, when the strength of the material is weakened, the elastic force is large, so that the shock absorbing power can be increased. However, since local deformation occurs due to a large load, stress concentration occurs at the local deformation part, and durability is weak. In case of increasing, local deformation can be prevented and durability is improved, but shock absorbing power is lowered and shock noise is generated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object thereof is to provide a shock absorber stop rubber capable of improving both shock absorbing power and durability.

In order to achieve the above object, the present invention is a stop absorber of the shock absorber which is installed on the stopper of the piston rod to absorb the impact noise generated when the rebound, a plurality of rubber members stacked between each other, and the plurality of rubber members It is characterized by providing a stop absorber for shock absorbers provided with a net interposed therebetween to suppress deformation in the radial direction.

1 is a cross-sectional view showing the inside of a general shock absorber.

Figure 2 is an enlarged view showing an extract of the conventional stop rubber shown in FIG.

Figure 3 is a partially cutaway enlarged perspective view showing a stop rubber of the shock absorber according to the present invention.

Figure 4 is an enlarged cross-sectional view showing a stop rubber of the shock absorber according to the present invention.

<Description of the code | symbol about the principal part of drawing>

1: piston valve 2: cylindrical tube

5: piston rod 6: stopper

8: road guide 11: stop rubber

12: rubber member 14: mesh

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 3 is a partially cutaway perspective view showing a stop rubber of the shock absorber according to the present invention, Figure 4 is a cross-sectional view showing a stop rubber of the shock absorber according to the present invention.

As shown in FIGS. 3 and 4, the stop rubber 11 according to the present invention is separated into four rubber members 12 stacked on each other, and three meshes 14 are formed between the rubber members 12. ) Is interposed.

In addition, the mesh 14 is integrally laminated and bonded to each rubber member 12 through a heat pressing process in a state of being bonded between the rubber members 12 through an adhesive material, and then through a vulcanization process to increase the bonding force. Let's go.

And the net 14 is made of a metal or synthetic resin material.

The stop rubber of the shock absorber according to the present invention configured as described above has a deformation in the radial direction while the net 14 interposed between the rubber members 12 maintains the deformation in the axial direction when an impact is applied. It is to suppress the function.

Therefore, since the deformation in the radial direction is suppressed by the mesh 14 so that deformation in each rubber member 12 occurs evenly, stress concentration due to local deformation can be prevented and durability is improved.

In addition, in the present invention, since the durability is maintained by the mesh 14, it is not necessary to increase the material strength of the rubber member 12.

Therefore, in the present invention, it is possible to employ a rubber member having a weak strength, that is, a large elastic force, it is possible to reduce the impact noise generated during the impact.

As described above, according to the stop rubber of the shock absorber of the present invention, deformation in the radial direction is suppressed by the mesh interposed between the rubber members, so that deformation in each rubber member occurs evenly, thereby preventing stress concentration due to local deformation. Since the durability can be improved and the material strength of the rubber member need not be increased, the impact noise can be reduced.

Claims (1)

In the shock absorber stop rubber installed on the stopper of the piston rod to absorb the impact noise generated during rebound, A stop absorber for shock absorbers, comprising: a plurality of rubber members stacked on each other, and a net interposed between the plurality of rubber members, respectively, to suppress deformation in the radial direction.