| 摘要 |
<p>PURPOSE:To arrange the supporting shaft of a turning member and an elastic body held by the supporting shaft and pressing the turning member at the aperture part of a cassette, to effectively utilize the space, to miniaturize the device and to make performance high. CONSTITUTION:A pinch roller pressing spring 38 consisting of a torsion coil spring is wound round the center of the rotation sharing shaft 33 of a pinch roller arm 26, and the arm 26 is pressed to a projecting part 35 so as to make positioning sure. A tension spring 39 whose one end is fixed on a chassis is hooked on the hook of a tape drawing-out guide arm 27 and presses it to the outer peripheral cam 45 of a cam gear 29. The spring 38 is arranged at the aperture part 37 of the tape cassette, the number of turns of the spring 38 is sufficiently secured, and mechanical parts are arranged to effectively utilize the space on the chassis. Namely, the cam gear 29 and the arm 26 are coaxially arranged and provided at the aperture part 37, whereby parts mounting density in the peripheral area of the cam gear 29 is enhanced, and the vacant area of the aperture part 37 is effectively utilized. Furthermore, the size of the passing area of the arm 26 when it is turned is reduced, accuracy is improved, and the device is light in weight.</p> |
