Patent ID: 6530682
Filing Date: 2003-03-11
Classification: F16B,F21V

Abstract:
A connecting element of a multi-sectional lamp tube comprising a locking ring, a mounting joint engaged to a bottom end of the locking ring, a threaded tube fastened at an interior section of the mounting joint and a center of which is capable of being inserted by a lamp tube cord, and a fixing ring locked to a lower end of the mounting joint by a nut; wherein:the locking ring has an opened bottom end and a though hole at a top end thereof; two sides of the though hole of the locking ring are formed with respective slots, a stopper is formed at a side of the through-hole of the locking ring; the stopper is precisely situated according to the orientation and shape of the lamp tube; the mounting joint has a female threaded surface at a lower inner section; each of the two sides of the top ring has respective buckling blocks respective the slots of the locking ring; the buckling blocks pass through the slots of the locking ring and then is limited by the stopper; furthermore, after the buckling blocks passes the though hole, the mounting joint is rotated and is gradually tightened against a ramp surfaces of the locking ring so as to resist against the stopper; an upper lamp tube is welded at an outer periphery of an assembled locking ring and a lower map tube is welded at an outer periphery of the fixing ring; thereby, the lamp tube is assembled and positioned easily and thus the tamp tube cord does not deform.