A door hinge device for a vehicle enables a stable opening and closing operation of a door, in the vehicle without a B pillar, in which a fixing latch portion configured in a hinge slider restrains a striker fixed to a case and fixes a slide movement position of the hinge slider, in a state where the hinge slider connected to a hinge portion of the door slidably moves in a diagonal direction outside a body along a rail inside a case and secures a rotation trajectory of the door.

A vehicle door device includes a first link mechanism formed of first and second link arms having a first rotary coupling point with respect to a vehicle body and a second rotary coupling point with respect to a door of a vehicle, and a second link mechanism formed of the first and second link arms provided independently of the first and second link arms forming the first link mechanism. First and second doors respectively supported by the first and second link mechanisms open and close independently in different directions based on operations of the first and second link mechanisms. At least one of the first and second link arms forming the first link mechanism and the first and second link arms forming the second link mechanism is provided with a coupling length variable mechanism that allows a coupling length between the first and second rotary coupling points to vary.

In one or more embodiments, systems and methods for providing one or more third-row doors for a vehicle and a vehicle comprising one or more third-row doors are disclosed. In one or more embodiments, the system and method for providing a third-row door for a vehicle includes a door that is provided as a fourth door on one side of a third row of seats. In one or more embodiments, the system and method for providing one or more third-row doors for a vehicle includes a door that is provided as a third and/or fourth door on one or both sides of the vehicle between a second row of seats and a third row of seats. In one or more embodiments, the vehicle including one or more third-row doors includes at least one third-row door provided for the at least one opening on either or both sides of the vehicle.

A vehicle door assembly including: a first door; a second door, wherein both the first door and the second door are pivotable between an open configuration and a closed configuration with respect to a chassis of a vehicle; and a structural member, wherein the structural member is deployable from the first door and behind the second door at a junction between the first door and the second door when in the closed configuration. Each of the first door and the second door is pivotable to the open configuration and to the closed configuration regardless of the other of the first door or the second door being in the open configuration or in the closed configuration. Also, the structural member is pivotably deployed. The structural member is constrained by a track structure coupled to the chassis of the vehicle at a top portion and at a bottom portion of the structural member.

A rear structure for a vehicle body includes a hinge mechanism, a rear door and a wheel cover inner reinforcing plate at a rear floor. The hinge mechanism includes a hinge seat and a rotating arm. The hinge seat is coupled to the wheel cover inner reinforcing plate, the rotating arm is rotatably coupled to the hinge seat, and the rotating arm is coupled to the rear door. An opposing hinged door vehicle is also provided.

A door assembly for a vehicle includes a rear door panel and a forward door panel. The rear door panel is configured to be hingedly connected to a vehicle body structure. The forward door panel is hingedly connected to the rear door panel. The forward door panel is configured to be lockingly connected to the vehicle body structure.