| 摘要 |
PURPOSE:To attain the driving by a motor of a small capacity even immediately before the completion of loading by providing a quadric link in a driving force transfer path of a loading mechanism and decreasing a load on the motor by means of a toggel mechanism immediately before the completion of loading. CONSTITUTION:A shaft 123 on a gear 13 and a guide slot 128 are contacted as shown in a point C at the state immediately before the completion of loading so as to exert a friction force to a link 126. This friction force F1 is decomposed by a pin 125 as shown in Fig. and a force larger than the F1 is obtained by this toggle mechanism as a force F2 of the link 126 pushing a lever 130. This force F2 becomes a larger force because the F2 is decomposed further by the quadric link comprising the lever 130, a lever 133, and a sector gear 135. Through the constitution above, tape guide assemblies 151, 152 are pressed to fixed metallic fixtures 153, 154 by using a motor of a small capacity immediately before the completion of loading. |
