Contact pin assembly, contact pin assembly manufacturing method, contact pin assembling structure, contact pin assembling structure manufacturing method, and socket for electrical parts

A method of manufacturing a contact pin assembly which comprises a plurality of contact pins and a connection member connecting all the contact pins, the manufacturing method comprising:

• forming a plurality of contact pins and contact pin connection portions integrally from a conductive elastic plate member;
• arranging and fixing the contact pins by using the connection member with a predetermined distance between adjacent ones;
• and
• removing thereafter the contact pin connection portions from the respective contact pins.

A contact pin assembling structure for a socket for electrical parts comprising:

• a plurality of contact pins provided for a socket body of a socket for electrical parts, each of said contact pins comprising a spring function portion having elasticity, a contact portion which is formed to a top end side of the spring function portion and contacts the terminal of the electrical part, a conductive portion extending from the spring function portion on the side opposite to the contact portion, and a connection leg portion further extending from the conductive portion, said conductive portions of the respective contact pins being connected together by said connection member;
• a connection member connecting all the contact pins with a predetermined distance between adjacent ones, said predetermined distance being made substantially equal to a distance between adjacent ones of terminals provided for an electrical part which is held in the socket body;
• and
• a contact pin holding member formed of an insulating resin material, said contact pin holding member holding and fixing together said conductive portion and said spring function portion and together said conductive portion and said connection leg portion.

A socket for electrical parts comprising:

• a socket body formed of an insulating resin material;
• a cover mounted to the socket body to be opened or closed;
• a plurality of contact pin assembling structures mounted to the socket body;
• and
• a floating plate elastically supported by the socket body through a spring, said floating plate having a terminal accommodation portion in which terminals of an electrical part is accommodated,
• said plurality of contact pin assembling structures being laminated in numbers corresponding to the number of rows of the terminals of the electrical part, and
• each of said contact pin assembling structure comprising:
• a plurality of contact pins provided for the socket body, each of said contact pins comprising a spring function portion having elasticity, a contact portion which is formed to a top end side of the spring function portion and contacts the terminal of the electrical part, a conductive portion extending from the spring function portion on the side opposite to the contact portion, and a connection leg portion further extending from the conductive portion, said conductive portions of the respective contact pins being connected together by said connection member;
• a connection member connecting all the contact pins with a predetermined distance between adjacent ones, said predetermined distance being made substantially equal to a distance between adjacent ones of terminals provided for an electrical part which is held in the socket body;
• and a contact pin holding member formed of an insulating resin material, said contact pin holding member holding and fixing together said conductive portion and said spring function portion and said conductive portion and said connection leg portion.