| 摘要 |
PROBLEM TO BE SOLVED: To improve component accuracy while sufficiently securing the rigidity of a hollow cast component. SOLUTION: In the right arm member 27 of a rear swing arm as a hollow cast component of the motorcycle constituted as a hollow structure using an inner vertical wall 32 and an outer vertical wall 33 opposed with each other and a rib connected between the vertical walls by casting, a recession 35 facing the outer vertical wall 33 is formed on the inner vertical wall 32, and a peripheral wall 34 demarcating the recession 35 is connected to the inner vertical wall 32 and the outer vertical wall 33, and is constituted as a rib. COPYRIGHT: (C)2011,JPO&INPIT |
