Patent ID: 6758578
Filing Date: 2004-07-06
Classification: F21V,H01R,Y10S

Abstract:
A lamp holder comprising a socket and a cap;said socket being internally provided at predetermined positions near a rear end thereof with piercing terminals for directly piercing through an cable assembled to the rear end of said socket and thereby electrically connecting said cable to said lamp holder, said socket also being provided at the rear end with an axially extended and externally threaded first connecting head and a rear flange radially outward extended from a root of said first connecting head; two wiring notches being oppositely provided on said first connecting head, and a sunken wire groove being provided on the rear end and said rear flange of said socket to extend between said two wiring notches; and said wire groove being provided at predetermined positions on a bottom thereof with openings, from which said piercing terminals in said socket are outward projected; said cap being internally provided with screw threads for engaging with said externally threaded first connecting head, and having a top recess that has a bottom surface adapted to press against said cable positioned in said wire groove; said cap having a cap flange radially outward extended from a periphery of an end of said cap facing toward said socket; whereby when said cable is connected to said lamp holder by positioning said cable in said sunken wire groove and tightening said cap to said first connecting head of said socket, said bottom surface of said cap and two areas of said cap flange at two opposite sides of said bottom surface together compress against said cable to evenly apply forces in the same direction to three serial points, that is, a front, a middle, and a rear point, on said cable, so that said cable is quickly pierced through by said piercing terminals projected from said openings on said wire groove without becoming misaligned with or skidded off said piercing terminals.