KR100757808B1 - Body valve use in a shock absorber - Google Patents

Abstract

The present invention relates to a body valve of a shock absorber.

Multi-disc disk of the body valve according to the present invention is a disk-S formed in the circumferential direction with a plurality of slits open to the center portion in the inner circumference, and a plurality of disks provided under the disk-S to elastically press the disk-S Characterized in that they include. Therefore, by improving the structure of the body valve so that the oil passing through the body valve has a certain flow path, the dispersion phenomenon of the fluid is reduced, thereby improving the damping force performance. In addition, there is an effect of reducing the cost by eliminating the disk ring.

Description

Shock Absorber Body Valve {BODY VALVE USE IN A SHOCK ABSORBER}

1 is a cross-sectional view showing a body valve of a conventional shock absorber,

2 is a cross-sectional view of the body valve of the shock absorber according to the present invention.

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

100: outer tube 200: inner tube

210: body valve 220: body body

230: passage 240: spring

250: multi-disc disk 252: disk-S

252a: slit 254: disk

300: scaffold

The present invention relates to a body valve located in the lower portion of the shock absorber, and more particularly to the body valve of the shock absorber with improved cost reduction and damping force performance.

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. The interior of the shock absorber is a gas so as to increase damping force. And fillers such as oil are filled.

1 is a cross-sectional view showing the inside of such a conventional shock absorber. As shown therein, the conventional shock absorber 1 has an inner tube 20 filled with oil, an outer tube 10 filled with oil to the outside thereof, and one end is inserted into the inner tube 20. 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 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, the upper side of which is a piston rod ( A central valve is opened so that 30 may extend outward, and a lower side body valve 21 having a body body 22 through which oil flows into the storage chamber 15 and the inner tube 20 is provided. The base cap 50 is press-fitted to the footrest 40 and the outer tube 10 at the bottom thereof. 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).

Here, the body valve 21 is formed in plural in a state where the passage 23 penetrates the body body 22.

And a spring 24 is provided on the upper surface of the body body 22, the multi-plate disk 25 for opening and closing the passage 23 is provided on the lower surface of the body body 22.

And the multi-disc disk 25 is a plurality of disks 26 are sequentially stacked, the disk-S (27), the disk ring 28 for maintaining the horizontal state of the footrest 40 and the body body 22 The disk-S 27 is formed with a plurality of slits 27a opened outward.

The body valve 21 of the shock absorber configured as described above is oil filled in the inner tube 20 and the outer tube 10 according to the vertical reciprocating motion of the piston rod 30, and at a low speed along the outer side of the body valve 21. The damping force is generated by passing through the slit 27a of the disk-S 27, and the damping force is generated while passing through the passage 23 at high speed.

However, as the oil passing through the body valve is formed differently at low speed and high speed, dispersion occurs. Therefore, there was a disadvantage that the performance of the damping force.

The present invention is to solve the conventional problems as described above, to improve the structure of the body valve so that the oil passing through the body valve has a constant flow path, the shock absorber that can achieve the cost saving by eliminating the disk ring Its purpose is to provide a body valve.

In order to achieve the above object, the present invention is installed on the foot plate of the lower end of the inner tube, the body body is formed with a plurality of passages on the concentric circle, the outer circumference portion is located between the body body and the foot plate, the central portion In the body valve of the shock absorber having a multi-plate disk through which the inner circumference is elastically deformed and opening and closing the passage, the multi-panel disk is a disk-S formed with a plurality of slits opened in the circumferential direction in the inner circumferential direction And a body valve of the shock absorber provided at a lower portion of the disk-S and including a plurality of disks for elastically pressing the disk-S.

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

2 is a cross-sectional view of the body valve of the shock absorber according to the present invention.

As shown in FIG. 2, a plurality of body valves 210 installed on an upper portion of the lower foot plate 300 of the inner tube 200 are formed in a state in which passages 230 penetrate through the body body 220.

And a spring 240 is installed on the upper surface of the body body 220, the multi-plate disk 250 for opening and closing the passage 230 is installed on the lower surface of the body body 220.

According to the present invention, the multi-plate disc 250 is composed of a disk-S 252 and a plurality of disks 254 sequentially stacked.

The disk-S 252 has a slit 252a formed at an inner circumference thereof, and the slit 252a extends outward from an inner diameter, and a plurality of slits 252a are formed in a circumferential direction such that an open surface faces inward.

And the plurality of disks 254 is installed between the disk-S (252) and the footrest 300, not only generates a damping force along the passage 230, but also the body body mounted on the circular portion of the footrest 300 A function for maintaining the horizontal state of 220 is added.

Referring to the operation of the shock absorber body valve in the present invention configured as described above are as follows.

First, in the low-speed and high-speed section during the tension stroke, as shown in Figure 2, the fluid compresses the spring 240 upward through the passage 230 of the body body 220 generates a damping force.

In the low speed and high speed sections of the compression stroke, as shown by the solid line of FIG. 2, the fluid flows into the passage 230, and the fluid flows into the inner surface of the disc-S 252 in the multi-plate disc 250. The damping force is generated while passing through the formed slit 252a and the disk 254.

Thus, by stacking the disk-S 252 in which the slits 252a are formed on the inner surface of the multi-layer disk 250, the fluid flow in the low speed or the high-speed section is transmitted through the passage 230. It is constantly introduced into the inside of.

Therefore, the fluid always flowing in a constant flow path will reduce the occurrence of scattering and the damping force performance is improved.

In addition, the cost reduction is achieved by eliminating the disk ring, which is conventionally installed on the top of the scaffold 300 to maintain a horizontal state.

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, the body valve of the shock absorber of the present invention improves the structure of the body valve so that the oil passing through the body valve has a certain flow path, thereby reducing the dispersion of fluid and improving the damping force performance. .                     

In addition, there is an effect of reducing the cost by eliminating the disk ring.

Claims (2)

It is installed on the upper footrest of the lower end of the inner tube, the body body with a plurality of passages formed on the concentric circle, the outer circumference portion is located between the body body and the footrest, the central portion is formed through the inner circumference elastic deformation and the passage In the shock absorber body valve having a multi-plate disk for opening and closing the The multi-disc disk is a disk-S circumferentially formed with a plurality of slits open to the center portion in the inner circumference, And a plurality of disks provided under the disk-S to elastically press the disk-S. The method of claim 1, The disk, the shock absorber body valve, characterized in that installed on top of the scaffold to maintain a horizontal state of the body body.

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