JPH01154306U

JPH01154306U -

Info

Publication number: JPH01154306U
Application number: JP5050288U
Authority: JP
Priority date: 1988-04-15
Filing date: 1988-04-15
Publication date: 1989-10-24

Description

[Brief explanation of the drawing]

第１図ａ，ｂ，ｃはこの考案による２段ストロ
ークシリンダの一実施例を示す作動説明図、第２
図ａ，ｂ，ｃは従来のものの一例を示す作動説明
図である。１，２１ａ，２１ｂ……シリンダ、２，３，２
２，２３……ピストン、４，２４ａ，２４ｂ……
ロツド、５……大径部、６……小径部、７……凹
部、８……凸部、９……後端面、１０……前端面
、１１……段部、１２……テーパ部、１３，１４
，１５，３３，３４，３５……ポート、１６，１
７……ピストンシール、１８，１９……ウエアリ
ング。 Figures 1a, b, and c are operation explanatory diagrams showing an embodiment of the two-stage stroke cylinder according to this invention;
Figures a, b, and c are explanatory views of the operation of an example of a conventional type. 1, 21a, 21b... cylinder, 2, 3, 2
2, 23... Piston, 4, 24a, 24b...
Rod, 5... Large diameter part, 6... Small diameter part, 7... Concave part, 8... Convex part, 9... Rear end surface, 10... Front end surface, 11... Step part, 12... Taper part, 13,14
, 15, 33, 34, 35...port, 16, 1
7... Piston seal, 18, 19... Wear ring.

Claims

[Scope of utility model registration request]

A rod 4 is installed in the cylinder 1 whose length is the sum of the first and second strokes.
In a two-stage stroke cylinder equipped with a piston 3 connected to
The large diameter piston 2 is formed to be larger than the outer diameter of the piston, and a large diameter piston 2 that is not connected to the rod is disposed within the large diameter portion 5.
A two-stage stroke cylinder characterized in that ports 13, 14, and 15 for piping are provided on both front and rear sides of the head side of the cylinder 1 and a portion corresponding to the second stage stroke.