| 摘要 |
PROBLEM TO BE SOLVED: To reduce defects in mass production and achieve a good button feeding. SOLUTION: When a seesaw button section 10 is operated, e.g. when an action section 11a is depressed, a force is applied to a button arm 13, and the force is transferred to the seesaw arm 34 of a base 30 by a connecting lug 14a. A downward force is applied to the seesaw arm 34, an acting lug 35a depresses a switch 32a, and the seesaw arm 34 is warped. The warp of the seesaw arm 34 gives a button feeding to an operator. The same situation occurs when an action section 11b is depressed.
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