Patent ID: 7641496

Claim:
An electrical connector for connecting an IC package to a printed circuit board (PCB), comprising: an insulative base defining a plurality of passageways to receive a plurality of conductive terminals therein, and a through hole thereof; a base plate retained in the insulative base, defining a through hole and a guiding slot; a cover movably assembled on the base, defining a plurality of passages corresponding to the passageways of the insulative base and a through hole; a cover plate defining a through hole and a guiding portion, the cover plate being retained in the cover and the guiding portion being sliding in the guiding slot; and a cylindrical actuator received and rotating in said through holes; wherein at least one inner edge of the through hole of the base plate extends outwards to form an edge portion with a smooth surface thereon, and the smooth surface is located at an inside face of the through hole of the base plate to engage with the actuator.