Double door system for vehicles

Abstract

A door device for vehicles, comprising a door arranged at a side of a body of a vehicle, the door having two end portions in a horizontal direction of the body. A first connecting member is arranged at the one end portion of the door, a second connecting member is arranged at the other end portion of the body; and a third connecting member arranged at a lower end portion of the door in a height direction of the body. The first, second and third connecting members arranged at the door are connectable with the body. The first and second connecting members have upper ends with these upper ends and the third connecting member arranged to provide a truss structure which connects the door and the body and provide rigidity against stress applied from the body to the door in a state where the door is closed.

1 . A door device for vehicles, comprising:
 a door arranged at a side of a body of a vehicle, the door having two end portions in a horizontal direction of the body;   a first connecting member arranged at the one end portion of the door;   a second connecting member arranged at the other end portion of the body; and   a third connecting member arranged at a lower end portion of the door in a height direction of the body,   wherein the first, second and third connecting members arranged at the door are connectable with the body,   the first connecting member has an upper end, the second connecting member has an upper end,   the upper ends of the first and second connecting members and the third connecting member are arranged to provide a truss structure which connects the door and the body and provide rigidity against stress applied from the body to the door in a state where the door is closed.   
     
     
         2 . The door device of  claim 1 , wherein
 the first and second connecting members are configured to enable the door to perform a first operation including at least one of rotation and translation relative to the body and a second operation which connects the door and the body and unlocks the connection between the door and body,   the third connecting member is configured to enable the door to perform the second operation,   one of the first and second connecting members is assigned to the first operation, and   the other of the first and second connecting members and the third connecting member are assigned to the second operation when the one of the first and second connecting members is in the first operation.   
     
     
         3 . The door device of  claim 1 , wherein
 one of the first and second connecting members is configured to enable the door to perform a first operation including at least one of rotation and translation relative to the body,   the other of the first and second connecting members and the third connecting member are configured to enable the door to perform a second operation which connects the door and the body and unlocks the connection between the door and body, and   the other of the first and second connecting members and the third connecting member are configured to perform the second operation when the one of the first and second connecting members is in the first operation.