JPH0464605U

JPH0464605U -

Info

Publication number: JPH0464605U
Application number: JP10954490U
Authority: JP
Priority date: 1990-10-18
Filing date: 1990-10-18
Publication date: 1992-06-03

Description

[Brief explanation of the drawing]

第１図は本考案のシール構造の一例を示す断面
図で第２図の−線断面矢視図、第２図はその
シール構造を用いた回動ベーンの正面図、第３図
はそのシール構造に用いられるシールリングの正
面図、第４図はその回動ベーンを用いたロータリ
アクチユエータの部分断面図、第５図はそのロー
タリアクチユエータに備わるロータの部分断面図
、第６図は従来のシール構造を示す断面図である
。１０……ケーシング、１１……環状空間、２０
……ロータ、３０……固定ベーン、４０……回動
ベーン、４１……ベーン本体、４１ｂ……透孔、
４２……当板、４５……凹溝、４６……軟質シー
ルリング、４７……テフロン系シールリング。 Fig. 1 is a cross-sectional view showing an example of the seal structure of the present invention, and is a cross-sectional view taken along the line - in Fig. 2, Fig. 2 is a front view of a rotary vane using the seal structure, and Fig. 3 is a seal thereof. A front view of a seal ring used in the structure, FIG. 4 is a partial sectional view of a rotary actuator using the rotary vane, FIG. 5 is a partial sectional view of a rotor included in the rotary actuator, and FIG. 6 is a sectional view showing a conventional seal structure. 10... Casing, 11... Annular space, 20
... Rotor, 30 ... Fixed vane, 40 ... Rotating vane, 41 ... Vane body, 41b ... Through hole,
42...Packing plate, 45...Concave groove, 46...Soft seal ring, 47...Teflon seal ring.

Claims

[Claims for Utility Model Registration] A rotary vane is accommodated in an annular space formed within the casing so as to be movable in the circumferential direction, and the rotary vane is connected to a rotor incorporated within the casing, and the annular space is In a rotary actuator in which the rotary vane receives fluid pressure applied to the rotor to rotate the rotor, a seal structure for the rotary actuator seals the rotary vane against a surrounding wall surface, A groove is provided on the outer peripheral surface of the rotary vane over the entire circumference, and a soft seal ring made of rubber or the like is fitted into the groove, and a Teflon seal ring is fitted onto the soft seal ring. A through hole communicating with the groove is provided in the pressure receiving surface of the rotary vane so that the soft seal ring is compressed in the axial direction when the vane is fitted, and the Teflon seal ring is brought into pressure contact with the wall surface. Seal structure for rotary actuator.