| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to reduce the size of the device and to reduce the electric power consumption thereof. SOLUTION: When the plunger 25 of an electromagnetic solenoid 23 is withdrawn, the key rear end member 21 of a corresponding key 4 is thrusted up by a thrusting-up member 29, by which the corresponding key 4 is touched. Then, the use of the electromagnetic solenoid 23 of the withdrawing type is made possible. The obtainable force is made larger, the size of the device smaller and the electric power consumption smaller than in the case the electromagnetic solenoid of the conventional thrusting-up type is used. |
