EARRING WITH ROTATIONAL CONNECTING PORTION, ROTATIONAL CONNECTING PART FOR EARRING, AND MOLDING METHOD FOR ROTATIONAL CONNECTING PORTION OF EARRING OR ROTATIONAL CONNECTING PART FOR EARRING

摘要

PROBLEM TO BE SOLVED: To provide an earring with a rotational connecting portion having significantly long durability in the number of opening/closing rotation.;SOLUTION: Hard materials 7 and 7 are inserted between a region 14 serving as a first connecting portion and a region 15 serving as a second connecting portion, the regions 14 and 15 in a fitted state are molded by plastic deformation means 11 into a tapered structure where the regions 14 and 15 constantly abuts on each other.;COPYRIGHT: (C)2003,JPO