| 摘要 |
PURPOSE:To electrically control switching and to improve operability by displacing a reel gear to be driven in an axial direction through a permanent magnet stuck to the gear and a coil facing the magnet, and thus performing the switching of the driving of a reel turntable. CONSTITUTION:On a reel shaft 5a, a reel gear 6a to be driven and a reel turntable 14 are held rotatably; and felt 15 is provided on the reverse surface of the reel turntable 14, and a compression spring is provided between the reel turntable and gear 6a. A permanent magnet 17 is stuck to the gear 6a, and a coil 19 is arranged facing to the magnet. The reel shaft has the same structure. For normal rotation, flowing a current through the coil 19 of the reel shaft 5a genenerates magnetic force with magnetic flux produced by the permanent magnet 17, and then the gear 6a is displaced upward to turn the reel turntable 14 by the frictional force of the felt 15. At this time, one reel shaft is not powered up. For reverse operation, the operation is inverse. Thus, the reel turntables are switched electrically with excellent operability. |
