Patent ID: 7431591

Claim:
A socket to electrically connect an electrical part and a printed circuit board, comprising: a socket body, comprising: first and second surfaces to which the electrical part and the printed circuit board are mounted, respectively, and a contact pin arranged on the socket body to establish electrical conduction between the electrical part and the printed circuit board, wherein: said contact pin is formed from a conductive and elastic plate having a plane surface, said contact pin comprises a base portion attached to the socket body and unmovable in an upward direction relative to the socket body, a first spring portion extending from the base portion, a first contact portion formed on a front end side of the first spring portion and contacting the printed circuit board, a second spring portion extending directly from the first contact portion to form a free end, the second spring portion comprising a straight portion and only one curved portion, and a second contact portion formed on the free end and only contacting a terminal of the electrical part without contacting the base portion, the base portion, the first and second spring portions, and the first and second contact portions having surfaces extending along the plane surface, the first contact portion has a width along the plane surface wider than a width of each of said first and second spring portions so as not to be elastically deformed when the first contact portion is contacted with the printed circuit board, and said second spring portion being disposed between the first and second contact portions to constitute a single electrical path between the terminal of the electrical part and the printed circuit board so that all of an electric current which flows from the terminal of the electrical part to the printed circuit board flows solely along an entire length of the second spring portion.