| 摘要 |
<p>The invention provides a push-button switch including: a star wheel (15) which is rotated by a constant angular step in one direction by a depression of a push button (4) that automatically returns; an indenter (7) which is pressed against the outer periphery of the star wheel (15) by a spring (8); a contact (9) which is attached so as to corotate with the star wheel (15), and which serves as a movable contact; and terminals (10, 11, 12) with which the contact (9) is contacted in accordance with a rotation angle, and which serve as stationary contacts. A small projection (16) having a rounded tip end is disposed in each of ridge portions (15a) of the star wheel (15). Even when the slope of each ridge portion (15a) does not have a large inclination angle, the star wheel (15) is prevented from being stopped at a position where the ridge portion (15a) is opposed to the indenter (7).</p> |
