Photo switch

Abstract

Abstract PURPOSE:To make changing-over operation of the switch stable by forming the guide grooves of the number equal to the number of stationary fibers to the circumferential edge of a rotatably mounted plate cam and pressing the end of the movable optical fiber to its circumferential edge by a pressing device. CONSTITUTION:The switch is constituted by a plate cam 10 which is mounted rotatably by a pulse motor 20, a movable optical fiber 30 which is pressed to the circumferential edge 11 of said plate cam by a pressing member consisting of a spring 22 and a contactor 23 and a plurality of stationary fibers 31 to be coupled to said movable optical fiber. Guide grooves 12 of the number equal to the number of the stationary optical fibers 31 are formed to the circumferential edge 11 of the plate cam 10. The end part of the movable fiber 30 is alwys held pressed via the contactor 23 to the circumferential edge 11 of the plate cam 10 in the A direction by the spring 22. Hence, even if the movable optical fiber 30 is engaged with the guide groove 12 corresponding to the stationary optical fibers 31 by the rotation of the plate cam 10, it does not vibrate, thus the phenomenon that the light signal leaks occasionally does not occur and the changing-over operation of the switch may be made stable.

Inventors

• 👤 Takashi Ishikawa
• 👤 Seiji Terai
• 👤 Shoichi Kurita
• 👤 Toshio Ooya
• 👤 Hideki Noda

Bibliographic Details