Telescopic socket

The utility model discloses a telescopic socket. The socket and a plug box are rectangular casing bodies with an opening at one end. A jack is arranged on the surface of the socket. A convex block is fixedly arranged on the outer surface near the opening end of the socket and is used for being connected with the plug box. An insertion claw is embedded in the surface of the plug box. A through hole is arranged at the rear part of the plug box. A short shaft is arranged in the through hole. Both ends of the short shaft are arranged on the plug box. A through hole is arranged on the upper surface near the opening end of the plug box. The through hole is corresponding to the convex block on the surface of the socket in position and size. One end of a power supply line is connected with the insertion claw of the plug box, and the other end of the power supply line is connected with the jack of the socket. According to the utility model, the length of the power supply line can be adjusted according to the actual si