| 摘要 |
<p>A molding that not only prevents the occurrence of shrinkage cavities but with which it is also possible to obtain rigidity and firm attachment strength even with a limited amount of material and to reduce the cost of the die device and achieve a more compact device using an easily molded shape. The molding (10) has, along the outer circumference of a protruding section (20), column base ribs (30) that extend in the axial direction of the protruding section, said direction intersecting with the back surface of a substrate (11), and that extend out from the base end of the protruding section (20) in the axial direction of the protruding section. The protruding section (20) is bonded via the column base ribs (30) to the back surface of the substrate (11) so that the base end is supported at a distance from the back surface. The column base ribs (30) have a shape that can be mold-released by cores (44), which release outward. The cores are separated, when the protruding section (20) is the center, from each other along the escaping direction, which intersects with the mold-release direction of the molding (10) as a whole, said mold-release direction being parallel to the axial direction of the boss.</p> |
