Patent ID: 8562367

Claim:
A socket which is mountable on a wiring substrate and accommodates an electrical part having terminals, wherein the socket comprises a socket body which is mounted on the wiring substrate and accommodates the electrical part, the socket body comprises a contact pin unit holding plural contact pins to electrically connect the terminals of the electrical part with the wiring substrate, the contact pin unit comprises a unit body in which the plural contact pins are mounted, a floating plate which is mounted on an upper side of the unit body to accommodate the electrical part and comprises through holes into which upper side contact portions of contact pins are inserted, and a holding structure which holds the floating plate in a state in which the floating plate descends near to the upper side of the unit body when the socket is not yet mounted on the wiring substrate, and releases the holding of the floating plate and makes the floating plate move upward by an urging force and to be vertically movable against the urging force when the socket is mounted on the wiring substrate, wherein the holding structure comprises a pin member which is inserted into a first insertion hole of the unit body and a second insertion hole of the floating plate vertically so as to be capable of moving vertical, a first spring which urges the in member downward, and a second spring which urges the floating plate upward.