| 摘要 |
The cable retractor mainly contains a housing member, a coil spring, a rotary disc, a cable, and a winding disc. The rotary disc has a top circular indentation where the coil spring is accommodated in the indentation. A number of gear teeth are provided around the rotary disc and the winding disc. The winding disc has a central axle for the winding of the cable. The winding disc is positioned such that its teeth engage those of the rotary disc. A spiral track and a centrifugal track are provided on the rotary disc and the housing member, respectively. A positioning ball, together with the spiral track and the centrifugal track, provides a positioning function. The cable can be configured to be pulled in a single direction with a connector or multiple directors at a free end.
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