| 摘要 |
An electrical cord roll-up apparatus has a stationary assembly and a reel assembly that rotably mounts on the stationary assembly. The stationary assembly has a shaft, an insulator on the shaft, axially spaced rings on the insulator and a power input or output cord that connects to the rings. The reel assembly has a reel tube with side flanges on the ends and brush assemblies mounted on the tube in alignment with the rings. The brush assemblies have copper or brass brushes that are pressed against the rings by compression springs, and connectors for connecting to the wires of the electrical cord. Rotating the reel one direction winds the electrical cord onto the reel and rotating the reel in the opposite direction unwinds the electrical cord.
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