| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a stepped resin molded product capable of preventing a stacking state where a barrel part of another molded product is fitted into an opening part and showing a superior mold releasing state when an injection molding is carried out and provide its manufacturing method. <P>SOLUTION: The stepped soft resin molded product in which an opening part 3 has a larger diameter than that of a cylindrical barrel part 2 and a step part 4 is arranged at an interface between the barrel part 2 and the opening part 3 is characterized in that an inner periphery of an end part of the opening part of the barrel part 2 is provided with a protrusion 5. Further, the outer periphery of the step part 4 is provided with a reinforcing rib 6. <P>COPYRIGHT: (C)2008,JPO&INPIT |
