| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrical contact such as a vehicular switch and relay capable of securing its conductivity by enabling a new contact part to make contact even if oxide adheres on the electric contact. SOLUTION: Minute recesses and projections 3a, 3b are provided on the electrical contact 1, with which either a movable contact or a fixed contact is made tilted to contact, the minute recesses and projections 3a getting in contact first are deep with convex parts easily crushable, and the recesses and the projections 3b getting in contact last are shallow. ON/OFF switching of the electrical contacts is repeated, and due to contact loads or the like, the minute projections get crushed in turn to have new projection parts getting in contact. COPYRIGHT: (C)2008,JPO&INPIT
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