| 摘要 |
A clad contact point material 1 is formed into a tape in shape by attaching by pressure a contact point part 3 of silver or silver nickel to a copper base material 2, silver plating 4 is performed on the entire material. A 2 mm clad contact point 6 segmented from the clad contact point material 1 is pushed into a lower hole 8 provided at the end part of a 0.15 mm thick beryllium copper movable plate 7 caulked as shown in FIG. 2D, and mounted as a contact point. Since the caulked part includes more silver plated part at the ratio of 1:1.3, it is antioxidant and anticorrosive under a high temperature condition, thereby increasing a service life of the contact point, and realizing uses under higher temperature and larger current conditions.
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