Patent ID: 8556638

Claim:
An electronic device socket provided with a socket part electrically connecting a plurality of terminals of an electronic device to corresponding contacts of a circuit board and able to move between a first state where no electronic device is attached to a second state where an electronic device is attached, said terminals and said contacts being electrically connected, said socket part comprising: a plurality of through holes arranged corresponding to the positions of the plurality of terminals of the electronic device and opening at a top surface of said socket part facing the electronic device and a bottom surface facing the circuit board, wherein said socket part comprising, at each of said plurality of through holes: an elastic member comprised of a coil spring, provided with an upper part wound in a coil shape and having elasticity along a longitudinal direction of said through hole and a lower part wound in a coil shape more densely than said upper part and able to form a conductive path substantially parallel to an extension direction of said through hole, and inserted into said through hole, a plunger having conductivity inserted into said through hole and biased from said elastic member toward said top surface in at least said second state, and a conductive film formed at an inner surface of said through hole, such that bar said first state a bottom end of said plunger is positioned above said lower part of said coil spring, and said plunger tilts and physically contacts said lower part of said elastic member when said elastic member is compressed in said second state.