| 摘要 |
<p>PURPOSE:To simplify the constitution and to reduce its size by composing a differential gear train of the 1st gear which rotates together with a rotating body rotatable around the common shaft of a reel turntable, a couple of the 2nd gears which engage the 1st gear and have rotating shaft provided to a reel turntable gear, and an internal gear which engages the 2nd gear. CONSTITUTION:Rotating bodies 30 and 32 are rotatable around the common shaft 46 and has brakes 33, 36, 39, and 42, brake pads 34, 37, 40, and 43, and springs 35, 38, 41, and 44. Reel turntable gears 29 and 31 engage a gear idler 28 and rotate around the common shaft 46, and a gear 60 is rotatable together with the rotating bodies 30 and 32. A couple of gears 48 and 50 engage a gear 60 and their rotating shafts 47 and 49 are pressed in the reel turntable gear 29. A tape take-up part 45 has an internal gear 45A and its internal gear 45A engages a couple of gears 48 and 50. Namely, gears 60, 48, 50, and 45A constitute the differential gear train.</p> |
