MANUFACTURE FOR ELECTRICAL FUSION JOINT

摘要

PROBLEM TO BE SOLVED: To fix a terminal pin to a provisionally formed body and to shorten a manufacturing process by injecting fused resin into a cavity after setting the provisionally formed body disposing an electrical heating wire and the terminal pin. SOLUTION: A socket-type electrical fusion joint A has a spirally continuous locking groove 11 cut on the outer peripheral surface of a provisionally formed body 1a formed like a cylinder. A supporting ring 12 is disposed at a position near the end of the spirally continuous locking groove 11 and has a through hole 3 passing in a radial direction. An electrical heating wire 2 is fitted in the spirally continuous locking groove 11. Each end is inserted into the through hole 13 of the supporting ring 12 and the end of the electrical heating wire 2 is fixed to a terminal pin 3. A core die 41 is inserted into the provisionally formed body 1a and then the outer peripheral side is covered and fastened by an outer die 42.