| 摘要 |
<p>PURPOSE:To enable the titled mechanism to operate in short time by providing a driving pulse generating circuit which generates a pulse signal in accordance with a command signal for change-over and an oscillating coil mechanism of which the coil is oscillated when energized by the output from said driving pulse generating circuit. CONSTITUTION:A reference pulse signal is the repetitive pulse constituted of the on time of the time t1 required for a clutch to operate and the off time of the time t2 required for a hollow coil 32 to return. When the signal of a high level which commands a change-over to an input terminal 47, a transistor 46 is intermittently turned on by the reference pulse during this time, by which the coil 32 is energized and the clutch is repeatedly moved. The operation is made possible in short time according to such constitution and the clutch mechanism is disposed even in a relatively thin space.</p> |
