| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a plug in which a loss is not generated even when either one of the plugs for input and for output becomes unnecessary since plugs are conventionally manufactured and sold separately for input and for output, some electric appliances may include a cord with a plug but in the case where the cord is short or the like, extension of the cord may be required, when preparing an extension cord, plugs for input and for output are required in both the ends thereof, if a user has only the plug for input or for output, the user may often additionally buy the other plug and further in such a state, workers on the job site may not make it in time.SOLUTION: In order to solve time and efforts or diseconomy in unnecessarily discarding or additionally buying a plug, the possibility to provide a dual-purpose plug is considered by integrating functions of two plugs for input and for output into one plug. Such a dual-purpose plug is then accomplished by developing members for converting dual purposes.</p> |
