Electrical connector having a cam slide contact lifter

1 . An electrical connector comprising:

an insulative housing having a mating cavity;

a plurality of contacts including a row of upper contacts and a row of lower contacts secured in the insulative housing, the row of upper contacts and the row of lower contacts having respective contacting portions exposed to the mating cavity;

a lifter operable relative to the insulative housing to move the row of lower contacts upwardly; and

an elastic member for biasing the lifter upon operated;

wherein the elastic member comprises a pair of springs arranged at intervals, the insulating housing forms a pair of holes for accommodating the pair of springs, and the lifter has a pair of posts extending into the pair of holes to interact with the pair of springs.

2 . The electrical connector as claimed in claim 1 , wherein the mating cavity is enclosed by an upper wall and a lower wall of the insulative housing, the lower wall having a slot to expose the row of lower contacts, and the lifter extends into the slot.

3 . The electrical connector as claimed in claim 1 , wherein the lifter has a ramp surface to bear against the row of lower contacts.

4 . The electrical connector as claimed in claim 3 , wherein each of the lower row of contacts has an inclined portion connected to an associated contacting portion, and the ramp surface of the lifter is operable to abut against lower surfaces of the inclined portions of the row of lower contacts and lift the contacting portions of the row of lower contacts upward.

5 . The electrical connector as claimed in claim 1 , wherein the plurality of contracts include another row of upper contacts and another row of lower contacts having respective contacting portions exposed to the mating cavity and behind the contacting portions of the row of upper contacts and the contacting portions of the row of lower contacts, respectively.

6 . The electrical connector as claimed in claim 1 , further comprising a pair of side metallic plates to assemble the row of upper contacts, the row of lower contacts, said another row of upper contacts, and said another row of lower contacts together in position.