| 摘要 |
<p>PURPOSE:To obtain a driving device of a small amount of power consumption, by providing a toothless gear having the 1st and 2nd hooking stage parts and a cam plate adhered to the rotary shaft of said gear. CONSTITUTION:A hook bar 18 actuates an oscillating driver 19 from a non- operation state in which a hook bar 18 is hooked to the 1st hooking stage part 11-1 and gives an oscillating displacement to a lock bar 17 with a driving gear 1 set as opposed to the 1st expected region 6-1. As a result, a toothless gear 3 is turned forcibly clockwise by the gear 1. Then an operation link 21, which has made a cam follower 22 provided at the tip of a cam plate 15 press-contact with a cam surface 16, has an oscillating displacement in accordance with the form of the surface 16. A displacement for operation is extracted via an active arm 25. An action lever 28 is pivotally engaged with the tip of the arm 25, and a play hook bar 29, a rewind hook bar 30 and fast forward hook bar 31 are projected on the side surface of the bar 28. Then action links 32, 33 and 34 are provided as opposed to the above-mentioned hook bars respectively.</p> |
