Contact tip for supplying welding electric power and welding torch using the contact tip

A welding torch comprising:

• a contact tip for supplying welding electric power which is constituted of a conductive member having a cylindrical portion in which a wire fed-through hole for a welding wire to be fed is formed;
• and
• a tip cover which covers the contact tip for supplying welding electric power and incorporates the contact tip for supplying welding electric power therein, wherein
• the contact tip for supplying welding electric power is configured such that
• a pair of halved tip members which has the two-split structure in the axial direction of the wire fed-through hole is combined to each other in a state where protruding portions formed on proximal ends of pressure receiving portions of the halved tip members are brought into contact with each other thus maintaining a parallel relationship between mating surfaces of the halved tip members, and the contact tip for supplying welding electric power is arranged in the inside of the tip cover in a tiltable state where a distance between distal ends of the halved tip members is expanded or shrunken, and
• the welding torch includes a tip-distal-end side biasing means which holds an electric power supply point for supplying electric power to the welding wire on a distal end side of the halved tip members by tilting the halved tip members so as to narrow the distance between the distal ends of the halved tip members.