| 摘要 |
<p>PURPOSE:To remove frictional sliding contacting with a driving body, and to make a starting position at the following side constant by connecting a following body at a predetermined position when a controlling means connecting and disconnecting the revolving torque of the driving body and the following body is located at a functioning position where driving force is interrupted. CONSTITUTION:A sprocket 21 as the driving body and a gear 22 as the following body are supported rotatably to a pivotal shaft 20. A ratchet 23 is formed previously to the sprocket 21, and a disc 24 of the following body is arranged adjoining to the ratchet. A connecting pawl 25 as a means transmitting revolving torque is mounted pivotally to the disc 24. When one end of the connecting pawl 25 is pushed by means of a roller 31, the connecting pawl slips off from the ratchet 23, and the following body 22 parts from the driving body 21. The roller 31 is connected to a notch 24a of the disc 24 to position the following body 22. The roller 31 is actuated by means of a solenoid 33 through a connecting lever 30.</p> |
