Plug-pin structure with inwardly-retracted plug-in points

A plug-pin structure with inwardly-retracted plug-in points, comprising:

• a frame;
• and
• a plug-pin unit;
• wherein the frame is provided inside an adapter;
• the plug-pin unit is slidably connected to the frame;
• the plug-pin unit is configured to slide along the frame, and extend from the frame for insertion into an external socket;
• the plug-pin unit comprises at least three plug-pin assemblies arranged side by side, comprising a first plug-pin assembly, a second plug-pin assembly and a third plug-pin assembly;
• the frame comprises a base plate;
• the base plate is provided with an aperture configured to allow the plug-pin unit to extend through and a plurality of guide posts arranged vertically;
• and the frame is provided with two conductive metal components respectively corresponding to a live (L) pole and a neutral (N) pole;
• the first plug-pin assembly, the second plug-pin assembly and the third plug-pin assembly each comprises a sliding part, a plug pin and a plug-in part;
• the sliding part is slidably connected to the plurality of guide posts;
• a first end of the plug pin is provided on the sliding part, and a second end of the plug pin is configured to extend toward the base plate;
• a first end of the plug-in part is fixed to the sliding part and electrically connected to the plug pin, and a second end of the plug-in part is configured to extend downward;
• each of the two conductive metal components is provided with a plug-in point configured to engage with the plug-in part;
• and
• the plug-in points are located within orthographic projections of two sliding parts located at two ends of the plug-pin unit toward the base plate.