JPS6037642U

JPS6037642U - Hydraulic shock absorber extension valve

Info

Publication number: JPS6037642U
Application number: JP13021683U
Authority: JP
Inventors: 荒井　順一
Original assignee: カヤバ工業株式会社
Priority date: 1983-08-23
Filing date: 1983-08-23
Publication date: 1985-03-15
Also published as: JPS6327157Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の油圧緩衝器の伸側バルブを示す部分縦断
面図、第２図は本考案の実施例に係る油圧緩衝器の伸側
バルブを示す部分縦断面図、第３図は本考案の実施例に
係るチェックバルブを示す平面図である。１・・・シリンダ、２・・・ピストンロッド、３・・・
ピストン部、１２・・・バルブシート、１２ａ・・・油
路、１２ｂ・・・油孔、１３・・・ディスク、１４・・
・リーフバルブ、１５・・・チェックバルブ、Ａ・・・
上方室、Ｂ・・・下方室。Fig. 1 is a partial longitudinal sectional view showing the extension valve of a conventional hydraulic shock absorber, Fig. 2 is a partial longitudinal sectional view showing the extension valve of a hydraulic shock absorber according to an embodiment of the present invention, and Fig. 3 is a partial longitudinal sectional view showing the extension valve of a hydraulic shock absorber according to an embodiment of the present invention. FIG. 2 is a plan view showing a check valve according to an embodiment of the invention. 1...Cylinder, 2...Piston rod, 3...
Piston part, 12...Valve seat, 12a...Oil passage, 12b...Oil hole, 13...Disc, 14...
・Leaf valve, 15...Check valve, A...
Upper chamber, B...lower chamber.

Claims

[Scope of utility model registration request]

(1) Formed in a piston portion that is slidably disposed within a cylinder and partitions the inside of the cylinder into an upper chamber and a lower chamber, and provides a desired rebound damping force during the extension stroke of the piston portion. In the expansion side valve of a hydraulic shock absorber formed to be able to generate a A valve seat having an oil hole that communicates with the valve seat;
A disc is slidably disposed within the valve seat and closes the oil hole when the valve seat is lowered, and a disc is disposed adjacent to the valve seat so as to close the oil passage from the lower chamber side and closes the oil hole when the valve seat is deflected. and a leaf valve that opens a passage, the disc descends within the valve seat to close the oil hole when a low frequency input occurs, and when the oil hole is closed, the hydraulic oil in the oil passage is An expansion-side valve of a hydraulic shock absorber, characterized in that the leaf valve is formed so as to flow into a lower chamber by bending the leaf valve.

(2) The disc has a leaf spring, and the end of the leaf spring is locked to the valve seat and is slidably disposed within the valve seat. Extension side valve of hydraulic shock absorber.

(3) The hydraulic shock absorber according to claim 1, wherein the disc is formed to be forcibly lowered within the valve seat due to a pressure accumulation phenomenon in a pressure chamber formed on the upper surface of the disc. expansion side valve.

(4) The pressure chamber formed on the upper surface of the disk is divided by a check valve having an orifice in the center, and pressure is accumulated by the inflow of this hydraulic oil through the orifice, and the pressure is released by opening the check valve. The first claim for utility model registration formed as follows:
The expansion side valve of the hydraulic shock absorber described in Section 1.