| 摘要 |
PROBLEM TO BE SOLVED: To secure sufficient rigidity on a car body against impact force at the time of side collision and to maintain a function of an opening to pass through an air conditioner duct, etc., favourable even in the case of forming the opening in a floor cross member passing through a middle part in the longitudinal direction of the air conditioner duct, etc. SOLUTION: A floor cross member 15 extending in the car width direction is fastened on an upper surface on a middle part in the longitudinal direction of a floor panel 11 of an automobile. Openings 21, 21 passing through in the longitudinal direction are formed on this floor cross member 15. Beads 22-25 extending in the car width direction are formed on the aforementioned floor panel 11 and/or the floor cross member 15 in the neighbourhood in the longitudinal direction of the aforementioned openings 21, 21. |
