| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the following problems: protruded streaks or parting lines are formed on the surface of a molded product along a fitting part of the two molds, the parting lines formed on a rear shaft and an intermediate shaft or a front member are aligned with each other when they are assembled, and a stress is concentrated on the ends of the parting lines due to an external force, thereby causing cracks at the ends of the parting lines. <P>SOLUTION: Two tube bodies are formed by injection molding, and are connected to constitute a shaft tube. In the connecting structure of the shaft tube, the parting lines are formed in different positions on the two tube bodies, when they are connected. <P>COPYRIGHT: (C)2013,JPO&INPIT |
