JPS62167940U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１ないし第３図は本考案の第１実施例を示し
、第１図は全体の縦断正面図、第２図は第１図
矢示部の拡大図、第３図はブーツの要部拡大縦断
正面図、第４図は第２実施例の第２図と同様の拡
大図である。 ９……シリンダとしての油圧シリンダ、１０…
…シリンダ孔、１１……ピストン、１２……孔部
、１４……取付溝、１５……ブーツ、１５ａ……
外周ビード、１５ｂ……内周ビード、１６……張
出し部、１７……外周面、１８……環状溝、２０
……弾性リング、２１……奥壁面。 Figures 1 to 3 show the first embodiment of the present invention, Figure 1 is an overall longitudinal sectional front view, Figure 2 is an enlarged view of the part indicated by the arrow in Figure 1, and Figure 3 is an enlarged view of the main part of the boot. The longitudinal front view, FIG. 4, is an enlarged view similar to FIG. 2 of the second embodiment. 9...Hydraulic cylinder as a cylinder, 10...
... Cylinder hole, 11 ... Piston, 12 ... Hole, 14 ... Mounting groove, 15 ... Boot, 15a ...
Outer circumferential bead, 15b... Inner circumferential bead, 16... Overhanging portion, 17... Outer circumferential surface, 18... Annular groove, 20
...Elastic ring, 21...Back wall surface.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] シリンダのシリンダ孔開口部に該シリンダ孔よ
りも大径の孔部を連設して該孔部内周面に形成さ
れた環状をなす取付溝にブーツの外周ビードを嵌
合し、また前記シリンダ孔に摺合されるピストン
の一端部を該シリンダ孔開口部より突出させて該
一端部外周面に前記ブーツの内周ビードを嵌着し
、前記外周ビードの凹状をなす外周面を前記取付
溝の奥壁面に圧着すべく、前記外周ビード内周面
に弾性リングを装着した作動機のシール構造にお
いて、前記外周ビードの側面全周に環状張出し部
を連設し、該張出し部の外周面に周方向に延びて
グリースを充填される環状溝を形成し、前記シリ
ンダの前記取付溝を、それに前記張出し部を前記
外周ビードと共に嵌合し得るように形成したこと
を特徴とする、作動機のシール構造。 A hole with a diameter larger than the cylinder hole is connected to the cylinder hole opening of the cylinder, and the outer peripheral bead of the boot is fitted into an annular mounting groove formed on the inner peripheral surface of the hole, and One end of the piston that is slidably engaged with the piston is made to protrude from the opening of the cylinder hole, and the inner peripheral bead of the boot is fitted onto the outer peripheral surface of the one end, and the concave outer peripheral surface of the outer peripheral bead is inserted deep into the mounting groove. In the seal structure of the actuator, in which an elastic ring is attached to the inner circumferential surface of the outer peripheral bead in order to be crimped to a wall surface, an annular projecting portion is continuously provided on the entire side surface of the outer peripheral bead, and a circular projecting portion is provided on the outer peripheral surface of the projecting portion in the circumferential direction. A sealing structure for an actuator, characterized in that an annular groove extending into the cylinder is formed and filled with grease, and the mounting groove of the cylinder is formed so that the projecting portion can fit therein with the outer peripheral bead. .