| 摘要 |
<p>PURPOSE: To obtain a tension-detecting apparatus which is simple in structure and fit to be miniaturized. CONSTITUTION: A base part of a tension member 11 is supported. The tension member has a guide 12 at its front end and swings upon receipt of the tension of a tape 30 guided along the guide 12. The shifting amount of the tension member at this time is detected by shift sensors 13, 21. At a specific operation mode, while the tape 30 is kept in touch with the guide 12, a lever 40 is brought in touch with the tension member 11 thereby to restrict the free swing of the tension member.</p> |
