| 摘要 |
PROBLEM TO BE SOLVED: To provide an object capable of obtaining a necessary pushing force and a comfortable sensation of clicking, even if made into a small-sized, in relation to a movable contact, used for a sheet in an electronic device, such as portable telephones. SOLUTION: A portion surrounded by a conically-shaped periphery 21 forms an upwardly expanded spherical-shaped portion 22, in the conical-shaped periphery 21 with its top-viewed outer edge circular being an inclined plane. Both the ends are cut by parallel lines symmetrically with the center line of the circular outer edge, and the intersection of the cut linear edge 23 with the circular edge is chamfered in arcuate manner to form a hyperbolic corner 24 having a substantially oval shape. COPYRIGHT: (C)2008,JPO&INPIT
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