Plug housing and plug apparatus

A plug housing for accommodating a plug for connecting to an adapter, the plug including a main body having a plurality of side surfaces and a front surface, the plug further including a first lever and a second lever placed over one of the side surfaces, the first lever at its one end being contact with one of the side surfaces and extending away from the front surface toward the other end, the second lever at its end being hinged to one of the side surfaces, extending toward the front surface and having the other end engaged with the other end of the first lever, the other ends of the first and second levers staying away from one of the side surfaces, when no force is applied there to and being resiliently movable when an force is applied down wordy toward the one of the side surface, the housing comprising:

• a housing body having an inside surface, the inside surface forming a through hole accommodating the main body of the plug;
• a slope portion formed on the inside surface and configured to cause the main body of the plug to move forward by a reaction force received from the second lever when the main body of the plug is accommodated in the through hole and the second lever is pushed down by the slope portion;
• and
• a restrict portion formed on the inside surface and configured to restrict the forward movement of the main body of the plug.