Electrical socket

A electrical socket comprising:

• base having a main body with a plurality of first passageways therein, a slot formed at a corner thereof;
• a cover slidably mounted to said base diagonally, the cover comprising a body with a plurality of second passageways generally in alignment with the corresponding first passageways, respectively, a block formed on a corner of the body and defining therein a positioning hole generally in alignment with the slot;
• a cam mechanism defining an upper actuation portion and a lower driving portion each having columnar profile, a center line of the actuation portion being offset a certain distance from that of the driving portion, the actuation portion being received in the positioning hole and the driving portion being received in the slot;
• wherein
• said cam mechanism includes movements along both a diagonally moving direction of the cover with regard the base and a transverse direction perpendicular to said diagonally moving direction when said cover is diagonally moving with regard to the base along said diagonally moving direction;
• further comprising a resilient ring, and wherein the actuation portion forms a circumferential recess for receiving the resilient ring;
• wherein the outer diameter of the resilient ring is larger than that of the actuation portion whereby the cover is positioned by the resilient ring;
• wherein a dimension of the positioning hole along said diagonally moving direction of the cover with regard to the base is generally equal to a diameter of the actuation portion while another dimension of the slot along said same diagonally moving direction of the cover with regard to the base is either equal to or larger than another diameter of the driving portion;
• wherein a dimension of the slot along said transverse direction is larger than a diameter of the driving portion;
• wherein a dimension of the positioning hole along said transverse direction is larger than a diameter of the actuation portion.