Wire line connector

A wire line connector, comprising two connector portions having the same shape so as to be able to be electrically connected when the two connector portions are engaged with each other with an upper and lower sides and a left and right sides of one connector portion being at opposite positions relative to the other connector portion, each connector portion comprising a main contact body (1) with a single-piece structure gained by shaping a sheet of a highly conductive metal plate and an insulating resin housing (2) with a single-piece structure which covers the main contact body (1), wherein

• an electrical connection trench (11) into which an insulated wire is compressed is provided at a rear end of the main contact body (1);
• a protrusion (12) that engages with a housing (2) and prevents disconnection is provided between a front end and the rear end of the main contact body (1);
• and a contact portion (13) is provided at the front end of the main contact body (1), where the rear end of the contact portion (13) has parallel walls (14, 14) in U shape or square shape, and the front end of the contact portion (13) has two parallel walls (15, 15) that protrude to the front only from the side of the upper half of the parallel walls (14, 14), providing such a form that the outer surfaces of the two protruding walls (15, 15) and the inner surfaces of said parallel walls (14, 14) make contact with each other when the connector portions are connected, and
• the housing (2) comprises:
• a wire insertion hole (21) at one end;
• and a step (22) to be engaged with the protrusion (12) for preventing disconnection of the main contact body (1) on the inside on the front end side;
• and an engaging hole (23) and an engaging protrusion (24) which prevent disconnection when the housing is connected with another housing, and provides a structure such that the form of the housing (2) at the front end is symmetrical so that the two housings can be engaged with each other with the upper and lower sides and the left and right sides being at opposite positions.