| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve contact reliability of a contact by preventing spread of abrasion powder generated when a movable contact slides with respect to a fixed contact. Ž<P>SOLUTION: When an armature 30 moves the movable contact 39 along a circular track X and makes it in contact with the fixed contact 14, the movable contact 39 supported by a contact-pressure spring part 35 is elastically displaced outward in a diameter direction of the track X, and slides with respect to the first contact part 14A. Thus, the abrasion powder Y is generated by friction force generated between the movable contact 39 and the first contact part 14A of the fixed contact 14. However, the abrasion powder Y generated in the first contact part 14A does not spread to the second contact part 14B because a groove 15 between the first contact part 14A and the second contact part 14B of the fixed contact 14 blocks, and thus the second contact part 14B of the fixed contact 14 can be in secure contact with the movable contact 39. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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