JPH0368699U

JPH0368699U -

Info

Publication number: JPH0368699U
Application number: JP13030689U
Authority: JP
Priority date: 1989-11-08
Filing date: 1989-11-08
Publication date: 1991-07-05

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示すフリーロツクシ
リンダの縦断面図、第２図は第１図中のＡ−Ａ矢
視図、第３図はフリーロツクシリンダの使用例を
示す魚群探知機の概略側面図、第４図は同じく手
押し式ダンパの概略側面図であり、第５図は別の
実施例を示すフリーロツクシリンダの縦断面図で
ある。また、第６図は従来例を示すフリーロツク
シリンダの縦断面図、第７図は第６図の要部を拡
大した断面図である。１……シリンダチユーブ、２……シートパイプ
、３……ピストン、４……ピストンロツド、５，
６……油室、８……作動油通路、９……バルブケ
ース、１０……作動油タンク、１２，１３……バ
ルブ、１４……プツシユロツド、１５……ダイヤ
ル、１５Ａ……カム面。 Fig. 1 is a vertical sectional view of a free lock cylinder showing an embodiment of the present invention, Fig. 2 is a view taken along arrow A-A in Fig. 1, and Fig. 3 is a fish finder showing an example of use of the free lock cylinder. FIG. 4 is a schematic side view of the manual damper, and FIG. 5 is a longitudinal sectional view of a free lock cylinder showing another embodiment. 6 is a vertical sectional view of a conventional free lock cylinder, and FIG. 7 is an enlarged sectional view of the main part of FIG. 6. 1...Cylinder tube, 2...Seat pipe, 3...Piston, 4...Piston rod, 5,
6... Oil chamber, 8... Hydraulic oil passage, 9... Valve case, 10... Hydraulic oil tank, 12, 13... Valve, 14... Push rod, 15... Dial, 15A... Cam surface.

Claims

[Scope of utility model registration request]

A piston that slides inside the cylinder tube,
A piston rod connected to the piston and slidably protruding from the cylinder tube, a passage communicating between oil chambers defined on both sides of the piston, and compressed gas communicated with these oil chambers via valves are sealed. A hydraulic oil tank, a push rod that enters the cylinder tube from the lateral direction to open and close the valve, and a dial that freely rotatably fits on the outer circumference of the cylinder tube and displaces the push rod via a cam surface on the inner circumference. Free lock cylinder.