Patent ID: 7001040

Claim:
A locking structure of a ceiling lamp for locking a ceiling lamp to a wire winding box; the locking structure comprising: a retaining sheet locking to a bottom of a wire winding box; a middle part of the retaining sheet having a positioning hole; the positioning hole being formed by overlapping a large size hole and a small size hole; a reed having one end fixed to the retaining sheet and another end of the reed having a round buckling surface with a notch; the round buckling surface covering upon the large size hole; the configuration of the notch corresponding to the round edge of the small size hole; and a plug inserting through the retaining sheet; one end of the plug being locked with a nut; after the plug passing through the positioning hole of the retaining sheet from a lower side of the retaining sheet, a lower end of the nut resisting against the small size hole of the positioning hole so that the plug is positioned to the retaining sheet; wherein in assembly, the plug is firstly inserted into the large size hole by passing the nut through the large size hole and then moves to the small size hole so as to fix in the small size hole, while an edge of the notch of the round buckling surface of the reed resists against the plug.