| 摘要 |
<p>An electromagnetically driven valve (10) includes an electromagnet (60) having a coil (62) and generating electromagnetic force, and an upper disc (31) and a lower disc (21) each having a support end (33, 23) and carrying out oscillating movement between a valve-opening position and a valve-closing position around the support end (33, 23). The upper disc (31) and the lower disc (21) are held at a position intermediate between the valve-opening position and the valve-closing position while the electromagnetic force is not applied. As a result of current supply to the coil (62), the electromagnetic force in a direction to move the upper disc (31) and the lower disc (21) to the valve-opening position and the valve-closing position acts on each position (X1, X2) of the upper disc (31) and the lower disc (21). The electromagnet (60) is provided such that a distance L1 between the position (X1) and the support end (33) is different from a distance L2 between the position (X2) and the support end (23). With such a structure, an electromagnetically driven valve of which initial drive is facilitated is provided.</p> |
