JPS6249055U

JPS6249055U -

Info

Publication number: JPS6249055U
Application number: JP14028785U
Authority: JP
Priority date: 1985-09-13
Filing date: 1985-09-13
Publication date: 1987-03-26

Description

[Brief explanation of the drawing]

第１図は本考案のピストンパツキンの平面図で
あり、第２図は第１図の断面図であり、第３図は
ピストンのパツキン溝に本考案のピストンパツキ
ンを自由状態に装着した１断面図であり、そして
第４図、第５図および第６図は従来のピストンパ
ツキンの１断面図である。１…パツキン本体、２，３，４…周溝、５，６
…リツプ部、７…山形リツプ部、８，９…連通孔
、１０…パツキン溝側面、１１…パツキン溝底面
、１２…シリンダ壁、１３…パツキン溝側面。 Fig. 1 is a plan view of the piston seal of the present invention, Fig. 2 is a sectional view of Fig. 1, and Fig. 3 is a cross section of the piston seal of the present invention installed in the seal groove of the piston in a free state. FIG. 4, FIG. 5, and FIG. 6 are cross-sectional views of a conventional piston packing. 1...Packing body, 2, 3, 4...Peripheral groove, 5, 6
...Rip part, 7...Chevron lip part, 8, 9...Communication hole, 10...Packet groove side surface, 11...Packet groove bottom surface, 12...Cylinder wall, 13...Packet groove side surface.

Claims

[Scope of Claim for Utility Model Registration] (1) The packing body is made of an elastic material such as synthetic rubber, and a chevron-shaped lip is formed on the outer circumferential surface of the packing where the packing slides into contact with the cylinder wall, and the packing contacts the packing groove. Two lip portions are formed on the inner circumferential surface of the packing, two circumferential grooves are formed on one side of the packing where the packing contacts the side of the packing groove, and one circumferential groove is formed on the other side of the packing; A piston packing characterized in that communication holes are formed on both sides of the chevron-shaped lip portion to communicate with the circumferential groove formed on the side surface of the packing. (2) The piston seal according to claim 1 of the utility model registration, characterized in that a lubricant such as grease is filled in a circumferential groove formed on the side surface of the seal body.