KR100495167B1 - Base cap for use in a shock absorber - Google Patents

Abstract

The present invention relates to a base cap of a shock absorber, and a seating groove having a size corresponding to the protrusion foot on an inner curved surface of the base cap so that protrusions formed at equal intervals along the circumferential direction may be seated on the bottom surface of the base valve. It is characterized by being formed in plural in the circumferential direction. Therefore, by forming a plurality of seating grooves on which the protruding foot of the base valve can be seated on the inner side of the base cap, there is an effect of improving the assemblability by improving the seating of the base valve and the base cap.

Description

베이스 Base cap of absorber {BASE CAP FOR USE IN A SHOCK ABSORBER}

The present invention relates to a base cap of a shock absorber, and more particularly, to a base valve mounted on the lower portion of the shock absorber so as to flow oil into the inner tube and a base cap of the shock absorber installed in the lower portion thereof.

In general, shock absorbers are installed between the axle and the body to absorb vibrations or shocks received by the axle from the road surface to improve ride comfort. It is filled to increase the damping force, and oil-filled hydraulic shock absorbers are commonly used.

As shown in FIG. 1, the conventional shock absorber 1 includes an inner tube 20 filled with oil, an outer tube 10 half filled with oil, and one end inside the inner tube 20. Inserted into the other end is provided with a piston rod 30 extending to the outside of the outer tube (10).

The inner tube 20 is a hollow tube installed inside the outer tube 10 so as to be spaced apart from the outer tube 10 by a predetermined interval to form a storage chamber 15 in which oil is stored therebetween, and an upper side thereof is a piston rod 30. ), Its central axis is opened so that it can extend to the outside, and a base valve 21 through which oil flows into the storage chamber 15 and the inner tube 20 is installed at the lower side thereof, and a base cap at the lower portion thereof. 25 is press-fitted. And the inside of the inner tube 20 is provided with a piston valve 31 which is slid and moved friction with the inner tube (20).

In the shock absorber configured as described above, the base valve 21 is assembled by press-fitting the base cap 25 to the opened lower end of the outer tube 10.

Then, the inner tube 20 assembled with the base valve 21 is inserted into the outer tube 10. At this time, the inclined surface is formed on the inner surface of the base cap 25 so that the inner tube 20 can be placed in the center of the outer tube 10 during the insertion of the inner tube 20, The protruding foot 22a protruding at equal intervals along the circumferential direction on the lower surface of the base valve 21 is also formed with the inclination of the lower surface thereof, and is mutually seated and assembled. By the inclined surface of the base cap 25, Although the inner tube 20 is placed in the center of the outer tube 10, there is a problem that the assembly stability is lowered such that the inner tube 20 is not vertically positioned by the inclined surface.

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The present invention is to solve the conventional problems as described above, by forming a plurality of mounting grooves that can be mounted on the inner surface of the base cap protruding foot, thereby improving the seating of the base valve and the base cap The purpose is to provide a base cap of shock absorbers with improved assembly.

In order to achieve the above object, the present invention, in the base cap of the shock absorber is installed in the lower end of the opening of the outer tube, the base valve is installed in the lower end of the inner tube, assembled along the circumferential direction on the bottom of the base valve It provides a base cap of the shock absorber is formed in the circumferential direction a plurality of mounting grooves of the size corresponding to the projecting foot on the inner curved surface of the base cap to be seated at intervals.

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

Figure 2 is an enlarged cross-sectional view of the base cap of the shock absorber according to the present invention, Figure 3 is a plan view of the base cap according to the present invention.

As shown in FIG. 2, the base cap of the shock absorber according to the present invention has an oil filled inner tube 120 and an outer tube 110 filled with oil to the outside of the inner tube 120. And, one end is inserted into the inner tube 120 is installed so as to move up and down, and the other end is provided with a piston rod 130 extending outward.

The base valve 140 is installed at the lower end of the cylindrical tube of the inner tube 120.

A plurality of protruding feet 144 protruding at equal intervals along the circumferential direction is formed on the bottom surface of the base valve 140.

The bottom of the protruding foot 144 is formed in a flat surface.

And the concave cup-shaped base cap 150 is welded to the lower end of the outer tube 110, as shown in Figure 3, is formed with an inclination from the flat center surface of the bottom.

And a plurality of seating grooves 152 corresponding to the protruding foot 144 of the base valve 140 is formed on the inner side having a slope.

The seating groove 152 is formed at equal intervals along the circumferential direction, such as the protruding foot 144, and the space in which the oil of the inner tube 120 flows into the outer tube 110 through the base valve 140, that is, the flow path It is formed to a depth that can accommodate only a part of the protruding foot 144 in a range that does not block. In addition, the size of the seating groove 152 is preferably formed to be somewhat larger than the size of the protruding foot 144. The assembly of the base cap of the shock absorber according to the present invention configured as described above is as follows.

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First, the base cap 150 is welded to the lower end of the outer tube 110.

The base valve 140 is press-assembled at the lower end of the inner tube 120 which is installed at a predetermined interval apart from the outer tube 110 inside the outer tube 110.

The inner tube 120 to which the base valve 140 is assembled is inserted into the hollow portion of the outer tube 110.

At this time, the plurality of protruding foot 144 of the base valve 140 is seated in the seating groove 152 having a larger area and a bottom surface than the area of the protruding foot 144, thereby providing a comfortable position of the protruding foot 144. The seating is made, and after the inner tube 120 is placed in the center of the outer tube 110 can be assembled vertically. In addition, rotation of the inner tube 120 may be prevented.

As such, the protruding foot 144 of the base valve 140 is stably seated and assembled in the seating groove 152, thereby improving assembly stability between the base valve 140 and the base cap 150.

Although the present invention has been illustrated and described with respect to certain preferred embodiments, the present invention is not limited to the above-described embodiments, and a person skilled in the art to which the present invention pertains has the present invention set forth in the claims below. Various modifications may be made without departing from the spirit of the invention.

As described above, according to the base cap of the shock absorber of the present invention, by forming a plurality of seating grooves in which the protruding foot of the base valve can be seated on the inner side of the base cap, it is possible to improve the seating ability between the base valve and the base cap. There is an effect that the assembly is improved.

1 is an enlarged cross-sectional view of a base cap of a conventional shock absorber;

Figure 2 is an enlarged cross-sectional view of the base cap of the shock absorber according to the present invention,

3 is a plan view of a base cap according to the present invention.

100: shock absorber 110: outer tube

120: inner tube 130: piston rod

140: base valve 144: protruding foot

150: base cap 152: seating groove

Claims (1)

In the base cap of the shock absorber is installed in the lower end of the opening of the outer tube, the base valve installed in the lower end of the inner tube is seated and assembled, A shock absorber having a plurality of seating grooves formed in the circumferential direction corresponding to the protruding foot on the inner curved surface of the base cap so that protruding feet formed at equal intervals along the circumferential direction may be seated on the bottom surface of the base valve. Base cap.