Patent ID: 7172446

Claim:
An electrical connector comprising; a housing made of insulator and provided with an opening through which a circuit board is partially inserted into the housing, a plurality of conductive contacts arranged in the housing, each of said conductive contacts being positioned to correspond to one of a plurality of connecting terminals provided on the circuit board when the circuit board is partially inserted into the housing through the opening provided thereon, and an actuator attached rotatably to the housing to engage with the conductive contacts and to take up first and second stations selectively, said actuator being operative to bring each of the conductive contacts into press-contact with one of the connecting terminals corresponding thereto when the circuit board is partially inserted into the housing through the opening provided thereon and the actuator is shifted from the first station to the second station and to cause each of the conductive contacts to get out of press-contact with the corresponding one of the connecting terminals when the circuit board is partially inserted into the housing through the opening provided thereon and the actuator is shifted from the second station to the first station, wherein said conductive contacts provided in the housing are divided into at least first and second groups, and said actuator engages with each of the conductive contacts belonging to the first group for bringing the same into press-contact with the corresponding connecting terminal in a first predetermined manner and with each of the conductive contacts belonging to the second group for bringing the same into press-contact with the corresponding connecting terminal in a second predetermined manner different from the first predetermined manner so that a time difference is brought about between a first time point at which the conductive contacts belonging to the first group kept in press-contact with the connecting terminals exert the maximum retroactive force to the actuator and a second time point at which the conductive contacts belonging to the second group kept in press-contact with the connecting terminals exert the maximum retroactive force to the actuator.