| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a contact of a vacuum interrupter having a quick arc extinguishing performance and excellent mechanical strength as tolerance to a mechanical stress imposed on an electrode when a movable contact is brought into contact with a stationary contact. <P>SOLUTION: Each of a movable contact 2 and a stationary contact 3 of a vacuum interrupter includes: a plurality of slot portions 2a1, 2a2 or 3a1, 3a2 formed in an extended manner toward an outer circumferential surface side from a plurality of positions, respectively, spaced apart from the center C of a contact surface; and a petal portion 2a or 3a formed between a pair of the slot portions 2a1, 2a2 or 3a1, 3a2 adjacent to each other. Each of the slot portions 2a1, 2a2 or 3a1, 3a2 includes: a first end portion 2a3 or 3a3 being closed and disposed near the center C; a second end portion 2a4 or 3a4 being open and disposed near the outer circumferential surface; a first slot portion 2a1 or 3a1 linearly extended from the first end portion 2a3 or 3a3; and a second slot portion 2a2 or 3a2 linearly extended to the second end portion 2a4 or 3a4 by bending the first slot portion 2a1 or 3a1 at a predetermined angle, so as to minimize a mechanical fragile part having a narrow width in the petal portion 2a or 3a while inducing a rotational movement of an arc. <P>COPYRIGHT: (C)2012,JPO&INPIT |
