| 摘要 |
PROBLEM TO BE SOLVED: To provide suspension parts for an automobile, integrally cast by connecting annular parts having shaft holes at each substantial center, and an arm part having flange and web by connecting parts, reduced in weight while strength and rigidity is secured, prevented from mold falling in a casting mold forming when manufactured (cast) and reduced in forming cost by dispensing with a large sized and complicated core. SOLUTION: At least one of the shaft holes of the annular parts is provided with a recessed part. The recessed part is continuous toward the web of the arm part and is gradually closed by making a front side of the web as a bottom part. An external shape of the connecting part is connected to the arm part with prescribed thickness between the connecting part and the recessed part. COPYRIGHT: (C)2010,JPO&INPIT
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