| 摘要 |
PROBLEM TO BE SOLVED: To provide a key top which is capable of obtaining the same clicking feeling at both a single-key and a multiple-key by using the same structure for respective rubber cups as well as performing a key-in operation smoothly and also providing low noise. SOLUTION: A key-stem of this key top is formed by uniting a first spring and a second spring, and a plurality of key-stems in a multiple-key, which are arranged to oppose to one another, are each formed so as to have a slope on the lower part of the outer surface and on the upper part of the inner surface by cutting one. The key-stems reduce as much as possible frictional resistance caused by contacting between a key-stem and an inner wall of the housing, then a key-in operation can be done with a key-stem capable of being lowered smoothly. Moreover, the single-key and the multiple-key having the same clicking feeling can be obtained by using the same rubber-cup, and by forming and fabricating it so as to swell a lower part at the center of a contact surface. COPYRIGHT: (C)2005,JPO&NCIPI
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