JPS61162604U

JPS61162604U -

Info

Publication number: JPS61162604U
Application number: JP1985046680U
Authority: JP
Priority date: 1985-03-29
Filing date: 1985-03-29
Publication date: 1986-10-08

Description

[Brief explanation of the drawing]

第１図は本考案によるエアシリンダの断面図、
第２図は第１図の一部分の拡大断面図、第３図は
第２図に示されたロツドパツキンの芯体の斜視図
、第４図は第２図に示されたロツドパツキンのシ
ール部材の断面図、第５図は第４図のシール部材
の平面図、第６図ないし第８図はそれぞれロツド
パツキンの他の実施例の断面図、第９図は従来の
エアシリンダの断面図である。１……エアシリンダ、２……シリンダチユーブ
、３，４……カバー、５……ピストン、６……ピ
ストンロツド、８……貫通穴、１１……環状溝、
１２……排気孔、２０……ロツドパツキン、２２
……通孔、２６，２６′……リツプ部。 Figure 1 is a sectional view of the air cylinder according to the present invention.
Fig. 2 is an enlarged sectional view of a portion of Fig. 1, Fig. 3 is a perspective view of the core of the rod packing shown in Fig. 2, and Fig. 4 is a cross section of the sealing member of the rod packing shown in Fig. 2. 5 is a plan view of the sealing member shown in FIG. 4, FIGS. 6 to 8 are sectional views of other embodiments of the rod packing, and FIG. 9 is a sectional view of a conventional air cylinder. 1... Air cylinder, 2... Cylinder tube, 3, 4... Cover, 5... Piston, 6... Piston rod, 8... Through hole, 11... Annular groove,
12... Exhaust hole, 20... Rod packing, 22
...Through hole, 26, 26'...Lip part.

Claims

[Scope of utility model registration request]

A cylinder tube whose both ends are closed by a cover, a piston movably provided within the cylinder tube, and a piston rod which is attached to the piston and projects to the outside of the cylinder tube through a through hole penetrating the cover. an air cylinder which is operated by applying gas pressure to the piston, an annular groove is formed in the inner periphery of the through hole, an exhaust passage communicating with the annular groove is formed, and an exhaust passage is formed in the annular groove. The rod packing is provided with a rod packing having two lip portions that can contact the piston rod at positions separated from each other in the axial direction and a through hole extending in the radial direction. An air cylinder characterized in that the air cylinder is configured to communicate with the exhaust passage.