| 摘要 |
<p>PURPOSE:To reduce the number of parts by switching driving through direct coupling and friction by means of the action of one abutting gear. CONSTITUTION:At the time of reproducing and fast forwarding, an arm 65 is turned, a gear 68 is dislocated from the gear 43a of a pulley 43 and a gear 44, and the pulley 43 rotates by a belt 40. A gear which is engaged with the gear 43a turns a lever 46 by a frictional force, is abutted on a clutch 52 and transmits the rotary torque of a capstan to a reel base 59 through the frictional force of the clutch 52 as usual. The rotation of the capstan goes to inverse and the others are similarly transmitted to the other reel bases in fast rewinding. At the time of fast forwarding, the arm 65 is energized with a spring force, the gear 68 is simultaneously abutted on the gears 43a and 44. The pulley 43 and the gear 44 is directly coupled and a gear 51 which is engaged with the gears 44 and 55 is directly coupled with the pulley 43. Therefore, the rotary torque of the capstan is transmitted with a reel base 59 directly coupled therewith. With such a constitution, the arm 65 can be provided due to reel base direct coupling driving, and the arms are reduced to only a couple, whereby a structure is simplified.</p> |
