A door of a vehicle may include a first door module forming a door skeleton; and a second door module coupled with the first door module and forming a door window; and where the second door module is made of a relatively lightweight material as compared to the first door module and a reinforcement member is coupled along external edge portions of the first door module and the second door module, reducing weight and cost of the door of the vehicle.

This door inner panel is a door inner panel formed of a metal sheet and includes a first panel portion having a first top sheet portion and a first standing wall portion connected to the first top sheet portion, a second panel portion having a second top sheet portion disposed with a gap with the first top sheet portion of the first panel portion and a second standing wall portion connected to the second top sheet portion, a flange portion connected to the first standing wall portion and the second standing wall portion, and a flat sheet portion disposed between the first panel portion and the second panel portion, the first standing wall portion and the second standing wall portion respectively have a level difference portion, and both ends of the flat sheet portion are integrated with the flange portion or the level difference portions.

A motor vehicle with at least one vehicle door includes a reinforcement component arranged in the lower section of the door body of the vehicle door. The reinforcement component is an open profile with lateral walls and an M-profile formed thereon which extend in the vehicle transverse direction in order to absorb forces acting in the vehicle transverse direction in the event of a load.

A door beam includes an aluminum alloy extrusion body extended in a longitudinal direction and having a pair of webs and a pair of flanges to be positioned on an inner side and an outer side in a width direction of a vehicle body. The pair of webs connect the pair of flanges at joint portions of each of the pair of webs such that the pair of webs and the pair of flanges form a closed cross section in a direction perpendicular to the longitudinal direction, and the pair of webs do not have a welded portion.

A door beam including an aluminum alloy extrusion extended in a longitudinal direction and having a pair of webs and a pair of flanges to be positioned on an inside and an outside in a vehicle width direction. The pair of webs connect the pair of flanges at joint portions of each of the pair of webs such that the pair of webs and the pair of flanges form a closed cross section in a direction perpendicular to the longitudinal direction, and each of the pair of webs has a welded portion in a vicinity of a neutral axis passing through a centroid of the closed cross section and parallel to the pair of flanges.

A door assembly, of a vehicle that includes a first pillar structure and a second pillar structure, includes a door outer panel, a door inner panel coupled to and positioned inwardly of the door outer panel, and an impact beam positioned between the door outer panel and the door inner panel. The door impact beam includes a first end and an opposite second end, the first end overlaps the first pillar structure and the second end overlaps the second pillar structure. The door assembly further includes an inner bulkhead coupled to the door inner panel and positioned between the door inner panel and the first end of the impact beam, and an outer bulkhead coupled to the door inner panel and positioned between the inner bulkhead and the first end of the impact beam, the outer bulkhead overlaps a portion of the inner bulkhead.

An impact protection reinforcement of a vehicle construction, which is supportively fastenable in the vehicle construction against the action of external mechanical extraordinary load conditions and comprises the following features: an elongated profile element with a longitudinal center line and a transversal center line arranged transversely to the longitudinal center line, which has in the longitudinal direction at each end side a fastening end and a central part therebetween, wherein the central part consists of a circumferentially closed hollow profile with a base layer and a top layer arranged opposite to the base layer, which are connected to each other via lateral faces, and the fastening ends each have a flat shape with at least two fastening points which are spaced apart differently from the transversal center line and the longitudinal center line and are provided as welding connection points to the vehicle construction.

A door of a vehicle may include a door internal panel; a door external panel mounted outside a passenger compartment with respect to the door internal panel, detachably coupled to the door internal panel, and made of a lightweight material than the door internal panel; and a reinforcement member mounted between the door external panel and the door internal panel and fastened to the door external panel and the door internal panel to increase rigidity, reducing weight and cost of the door of the vehicle and easily replacing the door external panel.

A vehicle door structure includes: a door hinge member mounted on a vehicle body; a door inner panel that constitutes a side door of an automobile; a door outer panel that is mounted on an outer side of the door inner panel in a vehicle width direction, and constitutes the side door of the automobile; and a door impact beam that is disposed between the door inner panel and the door outer panel, a first end side of the door impact beam being mounted on the door inner panel through a mounting member, a second end side of the door impact beam being rotatably mounted on the door hinge member.

A door of a vehicle may include a first door module forming a door skeleton and a second door module coupled with the first door module, wherein the second door module includes a door window and may include a relatively lightweight material as compared to the first door module and a hollow portion is formed along an edge portion of the second door module forming the door window, reducing weight and cost of the door.