JPH03100807U

JPH03100807U -

Info

Publication number: JPH03100807U
Application number: JP3099590U
Authority: JP
Priority date: 1989-11-17
Filing date: 1990-03-28
Publication date: 1991-10-22

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係る水中光ロータ
リジヨイントの半断面図、第２図は第１図中の
円内の拡大図、第３図は他の一実施例を表す半断
面図、第４図は従来の水中光ロータリジヨイント
の半断面図である。図面中、１……ステータ、１ａ……筒部、１ｂ
……外筒部、２……ロータ、２ａ……筒部、３…
…ころがり軸受、４……ロータ側光フアイバ、５
……ロータ側レンズ、６……ロータ側コネクタ、
７……ステータ側光フアイバ、８……ステータ側
レンズ、９……ステータ側コネクタ、１０……オ
イルシール、１１……空間、１２……油、１３…
…ベローズである。 Fig. 1 is a half-sectional view of an underwater optical rotary joint according to an embodiment of the present invention, Fig. 2 is an enlarged view of the circle in Fig. 1, and Fig. 3 is a half-sectional view showing another embodiment. 4 are half-sectional views of a conventional underwater optical rotary joint. In the drawings, 1...Stator, 1a...Cylinder part, 1b
...Outer tube part, 2...Rotor, 2a...Cylinder part, 3...
...Rolling bearing, 4...Rotor side optical fiber, 5
...Rotor side lens, 6...Rotor side connector,
7... Stator side optical fiber, 8... Stator side lens, 9... Stator side connector, 10... Oil seal, 11... Space, 12... Oil, 13...
...It's a bellows.

Claims

[Scope of Claim for Utility Model Registration] (1) A rotor and a stator are rotatably supported around a coaxial central axis via a rolling bearing, and a rotor-side optical fiber and a rotor-side lens are integrated to form a rotor-side connector. On the other hand, a stator-side optical fiber and a stator-side lens are integrated to form a stator-side connector, and the rotor-side connector is attached to the rotor with the optical axis of the rotor-side lens aligned with the rotation center axis of the rotor. The stator-side connector is attached to the stator by aligning the optical axis of the stator-side lens with the rotation center axis of the stator, and by arranging the rotor-side lens and the stator-side lens to face each other in a space surrounded by the rotor and the stator. , an oil seal that slides on the rotor and seals the space is fixed to the stator, and the space sealed by the oil seal is filled with transparent oil to equalize the pressure inside and outside the space. An underwater optical rotary joint characterized in that a pressure equalizing member for holding the stator is attached to the stator. (2) A joint between the rotor and the rotor-side connector and a joint between the stator and the stator-side connector each have a sealing surface formed substantially parallel to the axes of the rotor and the stator. 2. The underwater optical rotary joint according to claim 1, further comprising a sealing member.