SubjectWhen you use cord Lille, you have to connect the cord and the power source on the drum with electrical contactor, and you will be able to connect with the electrical contactor, and you will not be constrained by the length of the cord with no electrical contact Provide an enabling device.SolutionThe cord and the extension cord on the drum are connected directly, and the drum is wound on the drum by turning the drum into the allowable range without damaging the electrical power of the power cord and the mechanical function. After pulling the drum to the pipe and groove on the drum so that the code will not return, the drum is reversed to the allowable range of the power cord. The length is not restricted to the length. When the drum is rotated or inverted, the cord is taken up. If the code is pulled, the operation occurs in the order opposite to the case of pulling it, and it is automatically solved. Or, the power supply cord is swung to the left and right within each tolerance of the feed cord. This equipment can be applied to liquid and gas if the code is replaced with a hose for fluid.Diagram
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