| 摘要 |
PROBLEM TO BE SOLVED: To provide a vehicular door structure capable of restraining permanent deformation of a belt line opening part. SOLUTION: Since a door inner panel 18 and a belt line inner reinforcement 34 become the same coefficient of linear expansion by constituting both the door inner panel 18 and the belt line inner reinforcement 34 of a vehicular door out of the same kind of material, that is, aluminum, even when a temperature environment of placing the door 12 changes (particularly when placed in a low temperature reinforcement), the occurrence of a difference in a linear expansion quantity in the vehicle longitudinal direction between the door inner panel 18 and the belt line inner reinforcement 34 can be surely restrained. Thus, the occurrence of deformation in the belt line opening part 46 between a belt line inner part 42 and a belt line outer part 44 can be restrained. COPYRIGHT: (C)2008,JPO&INPIT
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