| 摘要 |
PROBLEM TO BE SOLVED: To certainly prevent non-filling of ribs with a resin material when molding and to ensure prescribed plate thickness by reducing the sink of wall parts or ribs.SOLUTION: A resin molded article formed by a mold for molding resin has wall parts 2 and 3 extending in a first direction A and a plurality of the ribs 7 and 8 arranged in the first direction A are provided to the wall surfaces 2a and 3a of the wall parts 2 and 3. The wall parts 2 and 3 have a plurality of lightening holes 13 and 14 and first inclined surface parts 13a and 14a obliquely crossing the first direction A are provided to the lightening holes 13 and 14. |
