| 摘要 |
A device for unidirectionally reeling and unreeling a power supply line includes: an upper bearing; a lower bearing; an upper cover; a lower cover; a rotary disc; a plug; a coil spring installed in the coil spring receiving space, on an outer wall of which a plurality of reeling-unreeling control grooves arranged uniformly; a clip body being installed on the rotary disc and used for clipping the power supply line; a conductive unit located in the clip body; and a reeling-unreeling control assembly installed on the lower cover for controlling a reeling-unreeling length of the power supply line. The device for reeling and unreeling a power supply line can be unreeled unidirectionally, can adapt to different voltages and apply to two-core or three-core power supply line, as well as has high safety.
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