A vehicle door structure includes: a horizontal beam arranged inside a door of a vehicle to extend in a vehicle front-rear direction; and a vertical beam arranged inside the door to extend in a vehicle up-down direction, wherein a vehicle front-side end and a vehicle rear-side end of the horizontal beam are each fixed to a door frame, and the vertical beam is fixed in a cantilever fashion to an intermediate portion of the horizontal beam in an axial direction thereof.

A composite liftgate structure that is strengthened using a metal hybrid reinforcement. The metal hybrid reinforcement is connected to the perimeter surface area of an inner panel. Another embodiment of the invention is directed to a swing door having an internal tubular frame for providing attachment of hinges and latches to the door and at least one inner or outer panel for attaching to the frame.

A door system for a vehicle includes a vehicle body structure and a first door structure. The first door structure includes a first door beam extending between a lower part and an upper part of the vehicle body structure when the first door structure is in a closed position. A first bracket is attached to a lower end of the first door beam by at least one fastening means. The first bracket is arranged to run in a first guide rail arranged in the vehicle body structure. The first guide rail includes a first recession. The first bracket includes a first protrusion arranged at a bottom end of the first bracket. Upon a roof crush, the first protrusion and the first recession in the first guide rail is arranged to engage to prevent separation of the first door structure from the vehicle body structure.

An outer door panel and an inner door panel are fixed to one another defining a cavity therebetween. A door handle assembly is fixedly attached to the outer door panel, with at least a portion of the door handle assembly overlaying an inboard surface of the outer door panel within the cavity. An inboard portion of the door handle assembly has a connection structure. An upwardly extending bracket within the cavity is fixed to an upper end and a lower end of at least one of the inner door panel or the outer door panel. The upwardly extending bracket is spaced apart from the door handle assembly. A vibration absorbing member has a first end fixed to the connection structure of the door handle assembly and a second end attached to the upwardly extending bracket at a location spaced apart from upper and lower ends of the upwardly extending bracket.

A door system for a vehicle includes a vehicle body structure and a first door structure. The first door structure includes a first door beam extending between a lower part and an upper part of the vehicle body structure when the first door structure is closed. The first door beam includes a first engaging part arranged to interact with an essentially correspondingly shaped first receiving guide rail when the first door structure is in the closed position. The first receiving guide rail extends in a lateral direction of the vehicle body structure, aligned with an extension of a first cross member extending in a lateral direction of the vehicle body structure. Upon a side collision, the first door beam is arranged to engage with the first cross member and the receiving guide rail is arranged to prevent the first engaging part from moving in a vertical direction.

A vehicle door structure includes: a horizontal beam arranged inside a door of a vehicle to extend in a vehicle front-rear direction; and a vertical beam arranged inside the door to extend in a vehicle up-down direction, wherein a vehicle front-side end and a vehicle rear-side end of the horizontal beam are each fixed to a door frame, and the vertical beam is fixed in a cantilever fashion to an intermediate portion of the horizontal beam in an axial direction thereof.

A center pillar structure may include a center pillar inner upper connected to a side inner, a center pillar inner connected to the center pillar inner upper in up and down directions, a center pillar reinforcement outer connected to a front pillar reinforcement outer and connected to the center pillar inner along the up and down directions, a center pillar reinforcement disposed along the up and down directions on the inner side between the center pillar inner and the center pillar reinforcement outer, and coupled between front/rear flange combined portions of the center pillar inner and the center pillar reinforcement outer, and a seat belt reinforcement shaped corresponding to the center pillar reinforcement, and connected to the center pillar reinforcement to form an inner closed section along the up and down directions.

A side vehicle-body structure of a vehicle that suppresses displacement of a front wall portion of a center pillar to a vehicle-width-direction inner side with respect to a rear wall portion of the center pillar due to a side collision load. The side vehicle-body structure of the vehicle in which the center pillar does not exist on a body side includes a front door, and a rear door having a length in a front-rear direction shorter than a length of the front door in the front-rear direction. The rear door has a center pillar on a door side in a front portion, and a gusset member protruding from a rear wall portion of the center pillar to a door outer panel side with respect to an outer wall portion of the center pillar and having a receiving surface portion for a side collision load along the door outer panel.

An inner panel of a door body includes an inner wall extending in a front-rear direction of a vehicle body on an inner side in a vehicle width direction, a connection wall extending toward an outer side in the vehicle width direction from the inner wall, and an outer wall extending in the front-rear direction of the vehicle body from an outer end of the connection wall in the vehicle width direction and joined to an outer panel. A door beam includes an arch-shaped beam body and a stay located on the outer side in the vehicle width direction with respect to an end of the beam body in a longitudinal direction. The rear end of the beam body is fixed to the inner wall. The stay has a front end fixed to the beam body and a rear end fixed to the outer wall.

An impact beam having a bent structure is provided. The impact beam is mounted at a lateral portion of each door in a vertical direction of a vehicle body and supports the door in the vertical direction. An upper end of the impact beam extends to support a roof panel and a lower end of the impact beam extends to a lower roller mounting portion. The impact beam is bent in an L shape and a T shape based on a curvature of the door.