JPS63152004U

JPS63152004U -

Info

Publication number: JPS63152004U
Application number: JP4272987U
Authority: JP
Priority date: 1987-03-25
Filing date: 1987-03-25
Publication date: 1988-10-05

Description

[Brief explanation of the drawing]

第１図は本考案による二段ストロークリンダの
一実施例の断面図、第２図はその外観を表す正面
図である。又、図中の符号で１はシリンダチユー
ブ、２，３はピストン、４はセンタスリーブ、５
はロツドカバー、６はヘツドカバー、８，９はエ
ンドストツパ、１４〜２１はＯリング、２２は第
二ポート、２３は第一ポート、２４は第三ポート
、２５は中空ロツド、２６は出力用ロツド、２７
は貫入穴、２８〜３０はシリンダ室、３２は連通
孔である。 FIG. 1 is a sectional view of an embodiment of a two-stage stroke cylinder according to the present invention, and FIG. 2 is a front view showing its appearance. Also, in the figures, 1 is the cylinder tube, 2 and 3 are the pistons, 4 is the center sleeve, and 5 is the cylinder tube.
is a rod cover, 6 is a head cover, 8 and 9 are end stoppers, 14 to 21 are O-rings, 22 is a second port, 23 is a first port, 24 is a third port, 25 is a hollow rod, 26 is an output rod, 27
28 to 30 are cylinder chambers, and 32 is a communication hole.

Claims

[Scope of utility model registration request]

A cylinder tube is provided with a head cover and a rod cover attached to both ends thereof, and a piston is formed at one end of the cylinder tube and slidably passes through the rod cover and is slidable within the cylinder tube. A hollow rod is provided with an end stopper that can be contacted, and a piston that slidably passes through the hollow rod and can slide in the cylinder tube is formed at one end, and the other end of the hollow rod is formed at the other end. an output rod provided with an end stopper that can come into contact with the cylinder tube, and one end of which is fixed to the head cover so as to be concentric with the cylinder tube, and which can fit into a penetration hole formed at one end of the output rod. It communicates with a cylinder chamber partitioned by a center tube, a sealing material provided at one end of the penetration hole to seal a gap between the center tube and the center tube, and a piston of the hollow rod and a piston of the output rod. a communication hole formed at one end of the output rod on the other end side than the sealing material so as to communicate with the gap between the inner peripheral surface of the penetration hole and the outer peripheral surface of the center tube; a fluid supply/discharge port provided on the head cover so as to communicate with the fluid supply/discharge port and connectable to the communication hole; and a fluid provided on the head cover so as to communicate with a cylinder chamber partitioned by the head cover and the piston of the output rod. A two-stage stroke cylinder comprising: a fluid supply/discharge port; and a fluid supply/discharge port provided in the rod cover so as to communicate with a cylinder chamber partitioned by the rod cover and the hollow rod piston.