| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce stress applied on a flexible flat cable and improve durability by providing a stress absorption part in an arbitrary point of a carrier and absorbing the stress applied on the carrier by deformation. SOLUTION: While a part of a flexible flat cable wound around an outer circumference of a rotor 1 is disentangled with counterclockwise rotation of the rotor 1, the flexible flat cable(FFC) 11 is wound around the internal circumference of a housing 2 and a carrier 8 is pushed by the outer circumferential face of a reversal part 11a so as to move in the same direction of the rotor 1. While a part wound around the internal circumference, of the housing is disentangled with clockwise rotation of the rotor 1, it is wound around the outer circumference of the rotor 1 so that the carrier 8 rotatingly moves in the same direction of the rotor 1. When the carrier 8 is pushed by the reversal part 11a in this action, the stress applied on the carrier 8 by a sliding frictional resistance is absorbed by deformation of a stress absorbing part 8a and the carrier 8 is expanded/contracted in the internal and outer circumferential directions. The stress applied on FFC11 can be thus reduced and durability of FFC11 can be improved.</p> |
