Patent ID: 7563139

Claim:
A housing ( 10 ) comprising a front extending portion including two compartments ( 12 ) and two slits ( 11 ) on a front wall of the compartment ( 12 ), and a rear extending portion including a plurality of longitudinal slots ( 13 ), and a damping section ( 14 ) extending rearward from the slots ( 13 ) and including two side cavities ( 141 ) of different sizes, and a plurality of bottom channels ( 142 ) open to the rear end of the damping section ( 14 ) and the channels ( 142 ); two blades ( 82 ) each having a rear portion fastened in the corresponding slit ( 11 ) and the corresponding compartment ( 12 ); a PCB (printed circuit board) ( 20 ) mounted in the housing ( 10 ) and having a transformer unit ( 21 ); two conductive seats ( 40 ) mounted on a front end of the PCB ( 20 ), each seat ( 40 ) being fastened in the compartment ( 12 ); a plurality of elastically bent contacts ( 30 ) mounted on a rear end of the PCB ( 20 ), each contact ( 30 ) including a connecting surface ( 31 ) and an axial central positioning groove ( 311 ) on the connecting surface ( 31 ); and at least one electrical wire ( 81 ) having a rear portion thereof bent to pass each channel ( 142 ), respectively, to position at least one electrical terminal ( 811 ) of the at least one electrical wire ( 81 ) on the positioning groove ( 311 ) in the cavity ( 141 ) and electrically connect the at least one electrical terminal ( 811 ) to the connecting surface ( 31 ), wherein the at least one electrical terminal ( 811 ) is urged rearward by each contact ( 30 ), respectively, to be squeezed between the positioning groove ( 311 ) and the rear end of the slot ( 13 ).