1. Field of the Invention
The present invention relates generally to a socket connector, and more particularly to a Zero Insertion Force (ZIF) socket connector for electrically interconnecting a Central Processing Unit (CPU) with a Printed Circuit Board (PCB).
2. Description of Related Arts
U.S. Pat. No. 6,267,615 issued to Lin on Jul. 31, 2001 discloses an electrical contact comprising a main portion, a soldering portion, a pair of wing portions extending laterally and forwardly from two edges of the main portion and a pair of contact portions each formed at a free end of the wing portion. However, such kind of electrical contact consumes a large quantity of material in manufacture because the electrical contact takes a large width in a plane view before the wing portions are folded. Therefore, each two adjacent electrical contacts have a larger distance therebetween before the contacts are cut off from the belt. Usually, the adjacent electrical contacts usually have double pitch which is two times of a distance defined between the adjacent passageways of the insulative housing. In an assembling of the electrical contacts into the insulative housing, two or three times are usually needed to insert the same row of electrical contacts, which is rather troublesome and time-using.
U.S. Pat. No. 6,471,534 issued to Lee on Oct. 29, 2002 discloses an electrical contact includes a retention portion, a soldering portion extending from the retention portion, a first arm and a second arm extending upwardly from the retention portion and beside each other. The first arm has a beam section, a curved section and a free end. The second arm includes a leg section and a curved contacting section. The free end and the curved contacting section cooperate with each other to press therebetween and electrically connect with a pin of an electronic package received on the cover. However, the first arm has only one curved section that it makes a cut-off section of the material contacting with the inserted pin of the CPU. The pin of the CPU is easily scraped by the cut-off section because of the cut-off section is rough. After several times of insertion and removal, the pin of the CPU may be damaged and unable to use.
Hence, an electrical connector with a material-saving electrical contact for preventing damage to the pin of the CPU are desired.