| 摘要 |
<p>PURPOSE:To surely unlock a door by use of a small actuator, by controlling the electrification of the actuator. CONSTITUTION:When a signal is input into a first timer 21 through an input means 2 from an unlocking signal transmitter 1, an unlocking electrification controller 25 is actuated at the time of the first timer to output a control signal with a certain frequency to a first electrifying means 22. The first electrifying means turns on or off the unlock relay in accordance with control signals to intermittently rotate the driving motor. Accordingly, the unlocking motion is repeated in a plurality of times within the interval of the first timer. When the unlocking motion is finished, a second electrifying means 24 is actuated by a second timer 23 to electrify the lock relay. Then, the driving motor is rotated one time for resetting. In this way, immediately after the unlocking motion has been repeated by a plurality of times of unlocking operation, one reset motion is performed and hence, the door can be unlocked even by a small unlocking torque.</p> |
