JPS6232244U

JPS6232244U -

Info

Publication number: JPS6232244U
Application number: JP12262985U
Authority: JP
Priority date: 1985-08-12
Filing date: 1985-08-12
Publication date: 1987-02-26
Also published as: JPH0220514Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例に係る液圧緩衝器の
要部縦断面図、第２図は従来の永久磁石を備えた
液圧緩衝器の一例を示す縦断面図、第３図は従来
の永久磁石を備えた液圧緩衝器のその他の例を示
す縦断面図、である。２１……シリンダ本体、２２……内筒、２３…
…外筒、２４……ピストン、２５……ピストン上
室、２６……ピストン下室、２７……リザーバ室
、２８……ピストンロツド、３０，３９……第１
の連通路、３１，４０……第２の連通路、３６…
…ベースバルブ、４４……永久磁石。 Fig. 1 is a longitudinal cross-sectional view of essential parts of a hydraulic shock absorber according to an embodiment of the present invention, Fig. 2 is a longitudinal cross-sectional view showing an example of a conventional hydraulic shock absorber equipped with a permanent magnet, and Fig. 3 is a longitudinal cross-sectional view of a main part of a hydraulic shock absorber according to an embodiment of the present invention. FIG. 7 is a vertical cross-sectional view showing another example of a conventional hydraulic shock absorber equipped with a permanent magnet. 21...Cylinder body, 22...Inner cylinder, 23...
... Outer cylinder, 24 ... Piston, 25 ... Piston upper chamber, 26 ... Piston lower chamber, 27 ... Reservoir chamber, 28 ... Piston rod, 30, 39 ... First
communication path, 31, 40... second communication path, 36...
...Base valve, 44...Permanent magnet.

Claims

[Scope of utility model registration request]

The cylinder body is composed of an inner cylinder and an outer cylinder, the inner cylinder is provided with a liquid chamber for storing working fluid, and a reservoir chamber is provided between the inner cylinder and the outer cylinder for storing the working fluid from the inner cylinder, The liquid chamber of the inner cylinder is partitioned into two chambers, a piston upper chamber and a piston lower chamber, by a piston that is slidably fitted into the inner cylinder and connected to a piston rod, and the piston upper chamber and the piston lower chamber are separated from each other by the piston rod. communicating through a first communication path and a second communication path provided on the outer circumference of the piston and controlling the flow direction of the hydraulic fluid;
At the lowest part of the piston lower chamber on the opposite side from the piston rod, there is provided a first valve that connects the piston lower chamber and the reservoir chamber to control the flow of the hydraulic fluid in the axial direction of the cylinder body.
In a hydraulic shock absorber having a base valve having a communication passage and a second communication passage on its outer periphery, a permanent magnet for attracting iron-based foreign matter in the hydraulic fluid is placed directly above the center of the base valve. A hydraulic shock absorber characterized by being provided with.