Structure of lamp socket

A lamp socket of the type comprising a socket body to hold a lamp bulb, a socket cap fastened to said socket body to retain an electric wire in place in said socket body, a first contact metal plate and a second contact metal plate mounted in said socket body to connect the electric wire to the lamp bulb electrically, wherein:

• said second contact metal plate is mounted in one angle slot in said socket body, said second contact metal plate having a plurality of raised portions which bear against an inside wall of said socket body, a horizontal stop rod stopped against said socket body, and a toothed projection for meshing with a threaded ring contact of the lamp bulb;
• a locating plate is mounted in an angle slot in said socket body remote from said second contact metal plate, said locating plate having a plurality of raised portions bearing against the inside wall of said socket body, a horizontal stop rod stopped against said socket body, and a toothed projection for meshing with the threaded ring contact of said lamp bulb.