| 摘要 |
<P>PROBLEM TO BE SOLVED: To let the fore end of a pipe off into a recess space to the extent of shrinkage even when a molded article shrinks due to molding shrinkage. <P>SOLUTION: In a pipe material insert structure in a resin molded article made by insert molding of a pipe material in the article, the recess space is provided in the opposite ends of the pipe material in the resin molded article and the end edge of the pipe material is made open to the recess space. By this constitution, occurrence of deformation or distortion in the resin molded article can be prevented, though the pipe materials different in qualities are inserted. When the lateral side of a portion of the pipe material is exposed on the outer wall surface of the resin molded article and a notched step part is formed in the contact edge of the pipe material on this outer wall surface, moreover, this notched step part is bent on the occasion of the molding shrinkage after molding and thereby a shrinkage stress can be absorbed. Therefore the occurrence of deformation or distortion in the width direction of the pipe material can also be prevented. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
