| 摘要 |
<p>The switch (1) has disconnection units constituted of an internal piston (6) and two elastic control units (8, 9) and provided with a displacement unit for displacing an electric contact (3) from a rest state to a detection state and vice-versa at a speed, whose maximum value is predetermined. The electric contact has a speed of movement respectively from the rest state to detection state and from the detection state to rest state independent of a speed of an external piston (5) of an operating push-button (4), when the speed of the external piston is greater than two preset maximum speeds.</p> |
