| 摘要 |
PROBLEM TO BE SOLVED: To save space, reduce the number of parts and man hours, achieve a good heat dissipation and good insulation performance without receiving any internal pressure restriction, and carry out large capacity formation. SOLUTION: A changeover switch includes: a sealed container which is constituted of an insulated cylinder 40 serving as a pressure bulkhead obtained by forming a recess in a center of an axial direction, a bottom plate 43, and a head cover 9; a transmission shaft 16 arranged on an axial center line in the insulated cylinder with one end connected with a rotary rod 12 supported by the head cover and the other end supported by penetrating a center of the bottom plate; an energy storage mechanism 15 which carries out energy storage of a power of the rotary rod; a drive transmission cylinder 21 which is supported by a holding member 36 provided near the bottom plate and is rotated by the energy storage power; plural vacuum shielding valves which horizontally penetrate a wall surface of the recess formed in the insulated cylinder and arrange a movable terminal side toward an axial center of the insulated cylinder; a drive mechanism which is attached corresponding to the movable terminals of the valves and generates a driving force to open and close each vacuum shielding valve; and a drive transmission mechanism which transmits this driving force to the movable terminals of the vacuum shielding valves one by one. COPYRIGHT: (C)2011,JPO&INPIT
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