| 摘要 |
PURPOSE:To improve rigidity and simplify designing and manufacturing the coupled parts by coupling a front frame and a rear frame with an intermediate frame. CONSTITUTION:A front frame 3 and a rear frame 4 are coupled through an intermediate frame 14 which is installed along a side sill 5 so that the closed sections can be continued. In consequence, since rigidity can be improved comparing with the one which has a structure just to couple the both frames 3, 4 to the side sill 5, and it is a constitution which does not directly coupled to the side sill 5, that is all which is needed is just to erect and tightly fix a pillar on the side sill 5, therefore, it can attain simplification of designing and manufacturing the geometry to the side sill 5. |
