Door device

1. A door device comprising:

a plurality of doors that open or close a single opening in a vehicle, the doors having mutually opposing opening ends; and

a door interlock mechanism that interlocks the opening ends of the doors when the doors receive an impact from the exterior of the vehicle while both the doors are in closed states wherein the door interlock mechanism comprises

a striker positioned at the opening end of one said door; and

a latch unit positioned at the opening end of the other said door and enabled to engage with the striker, and

when the doors receive the impact, the striker and the latch unit move relative to each other from a first position in which the striker and the latch unit are not engaged to a second position in which the striker and the latch unit are engaged.

2. The door device according to claim 1 , wherein the latch unit has an arrangement that releases engagement of the latch unit with the striker.

3. The door device according to claim 1 , further comprising a cover member that prevents access to the latch unit from the exterior when the doors are open.

4. The door device according to claim 1 , wherein said interlocking mechanism is operable upon impact to move one structure into engagement with another structure.

5. The door device according to claim 1 , wherein upon impact, the striker is confined inside an engaging groove in said latch.

6. The door device according to claim 5 , wherein the door interlock mechanism further comprises a rotatable ratchet that is operable in response to movement of said striker to confine said striker.

7. The door device according to claim 6 , wherein the door interlock mechanism further comprises a shaft, and said ratchet is rotatable about said shaft and said shaft is structured to receive and absorb impact and prevent separation of the doors.