SHAFT BUILT-IN TYPE GEAR WHEEL AND METHOD FOR MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a shaft built-in type gear wheel excellent in molding accuracy.SOLUTION: The shaft built-in type gear wheel includes: a metallic shaft 10; and a synthetic resin gear joined with respect to the metallic shaft, where a rough surface 16 including irregularities is formed by radiating a laser beam with respect to a surface where the metallic shaft is jointed to the synthetic resin gear and part including the joint surface of the metallic shaft radiated by the laser beam is arranged in a metal-mold to perform injection molding of a resin to be the synthetic resin gear.SELECTED DRAWING: Figure 2