| 摘要 |
A plug is provided that includes: at least two electrodes; a housing that supports the electrodes; an electrode cover which covers the electrodes when not connected with a plug receptacle, and which is accommodated in the housing and exposes the electrodes when connected with the plug receptacle; and a lock mechanism which inhibits the electrode cover from being accommodated in the housing when not connected with the plug receptacle, and which allows the electrode cover to be accommodated in the housing when connected with the plug receptacle. |
