| 摘要 |
PROBLEM TO BE SOLVED: To provide a vacuum valve capable of suppressing diffusion of metal vapor produced when a main current is carried and cut off and preventing it from depositing on an insulation tube and on a flexible body, simple in internal structure, and reduced in size and weight. SOLUTION: A fixed electrode rod 5 and a movable electrode rod 6 are introduced into a vacuum valve 1 through an upper container component member 3 and a lower container component member 4, respectively. Airtightness in the vacuum valve 1 is maintained by mounting a metallic bellows 7 between the movable electrode rod 6 and a circumferential edge of the lower container component member 4 through which the rod 6 is put. Disk-shaped contacts 5a, 6a are fastened to the ends of the fixed electrode rod 5 and the movable electrode rod 6, respectively, and they are adapted to make contact with and part from each other following the vertical movement of the movable electrode rod 6. A disk-shaped shield member 5b is fastened to the back surface of the contact 5a confronting the contact 6a, thereby preventing metal vapor from depositing on an insulation tube 2.
|
