| 摘要 |
PROBLEM TO BE SOLVED: To provide a vacuum valve having reduced brazing sites by reducing the number of components. SOLUTION: The vacuum valve comprises a vacuum container having a cylindrical insulating container 1, a fixed electrode and a movable electrode arranged therein opposing each other, and a movable electrode rod 8 having one end fixed to the movable electrode and the other end pulled to the outside of the vacuum container, and supported via a bellows 3 in an air-tight manner by the vacuum container 4. The bellows 3 has a cylindrical bellows portion 3a to be expanded in the axial direction, a first mounted portion 3b formed at one end of the bellows portion 3a, a flat portion 3c formed at the other end of the bellows portion 3a and having an outer diameter (b) larger than an outer diameter (a) of the bellows portion 3b, and a second mounted portion 3d formed at the outer edge of the flat portion 3c. The first mounted portion 3b is bonded to the movable electrode rod 8 in an air-tight manner, and the second mounted portion 3d is bonded to one end of the insulating container 1 in an air-tight manner. COPYRIGHT: (C)2010,JPO&INPIT
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