Door structure for vehicle

A door structure for a vehicle, in which one opening formed in a car body side portion and continuous in a back-and-forth direction is opened and closed by a front side door and rear side door, and which has a lap portion where a rear end of the front side door and a front end of the rear side door overlap each other in a direction of car width when the front and rear side doors are closed, the door structure comprising:

• a front impact bar disposed in the front side door to extend in a back-and-forth direction,
• a rear impact bar disposed in the rear side door to extend in the back-and-forth direction,
• a reinforcing member disposed in the front end of the rear side door to extend in a vertical direction to form a closed section,
• a rear end of the front impact bar and a front end of the rear impact bar extending to the lap portion or to a portion in the vicinity thereof to be close to each other,
• the front end of the rear impact bar bonded to that portion of the reinforcing member which forms the closed section, to abut thereagainst externally in the direction of car width,
• the rear side door being swung about a hinge provided at a rear end thereof as a center to open forward,
• the front side door being swung about a hinge provided at a front end thereof as a center to open backward,
• in an overlapping state, the front end of the rear side door being covered by the rear end of the front side door externally in the direction of car width, so the rear side door can be opened only when the front side door is open,
• in a closed state, the rear side door being locked on the car body at the front end thereof,
• in the closed state, the front side door being locked on the front end of the rear side door,
• a lower end of the opening forming a side sill extending in the back-and-forth direction to serve as a car body strength member,
• an upper end of the opening forming a side end of a roof panel,
• in the closed state the rear side door being locked on the side sill and the side edge of the roof panel, and
• the lap portion of the rear side door or a portion in the vicinity thereof having an engaging portion which engages with the car body externally in the direction of car width, when the rear side door is closed, to regulate the rear side door from being displaced inwardly in the direction of car width.