RESIN GEAR

摘要

PROBLEM TO BE SOLVED: To prevent strength of a resin gear and tooth profile accuracy from deteriorating in regard to the resin gear used for a power transmitting mechanism for automotive components and various industrial machinery. SOLUTION: The circular resin gear 1 having teeth 11 on an outer peripheral face 1a is made of resin which is injection-molded through a plurality of gates 3 in a peripheral direction. Through-holes 4 being off to a peripheral direction against a center position between adjacent gates 3 are formed between the respective adjacent gates 3 in a peripheral direction. COPYRIGHT: (C)2004,JPO