Patent ID: 6296497
Filing Date: 2001-10-02
Classification: H02G,Y10S

Abstract:
A three-phase power cable plug-type connector, comprising a head body (1; 1') having at least two sockets (2; 2'), and a plurality of plug-in bodies (50) equal in number to the number of said sockets (2; 2'),a) said head body (1; 1') having on the inside thereof three intermediate conducting members (3) which are isolated from each other by means of an insulation structure (4, 20) for electrically interconnecting conducting wires of three-phase power cables, each socket (2; 2') of said head body (1; 1') being provided therein with three insertion holes (13) which are isolated from each other by said insulating structure (4, 20), each insertion hole (13) being assigned to one of the three intermediate conducting members (3) and having at its inner end a connecting seat (6) connected to one of the intermediate conducting members (3) and an axial locking assembly;b) said plug-in body (50) including three conducting plug rods (75) and three electric-coupling devices (80) which are isolated from each other by means of another insulating structure (68, 71), said electric-coupling devices (80) being connected with the three conducting plug rods (75) and three conducting wires of a three-phase power cable, respectively, thereby electrically conducting each plug rod (75) to its corresponding wire, said three plug rods (75) being insertable into the three insertion holes (13) of each socket (2; 2') and locket therein by the axial locking assemblies in the head body;c) shielding layers (10, 12; 69, 72) for corresponding conducting paths of the three phases arranged in the insulating structures (4, 20; 68, 71) of the head body (1; 1') and the plug-in bodies (50); andsaid axial locking assembly comprising an inner conducting gripper (5), an outer conducting gripper (9) and an expansion sleeve (8) located between the inner conducting gripper (5) and the outer conducting gripper (9), said inner and outer conducting grippers (5, 9) being in threaded engagement with said connecting seat (6), and said expansion sleeve (8) which is capable of radially expanding under an external force so as to allow insertion of one of the conducting plug rods (75) therethrough for axially locking the inserted plug rod (75).