Abstract: A lightweight door for vehicles comprises a door box having a top portion delimited by inner and outer window gutter profiles. A lightweight window frame is coupled to the door box and is formed of light metal or light metal alloy. The window frame is formed from an extruded bent profile that has a closed hollow chamber and at least one mounting formation. The mounting formation may include a mounting groove or a clip-on strip. The mounting formation continuously follows a length of the profile and is for receiving at least one add-on component. A plastic molded panel module is coupled to the frame. The module has a support surface and outer panels formed as a single piece along the frame adjacent a roof rail and a B-pillar of the motor vehicle.

Abstract: A door shell for a motor vehicle door with a one-piece or multi-piece profile frame of metal. The profile frame has a profile cross-section changing over the length of the profile frame at least in sections, in particular in the region of an edge of the door shell running essentially vertically. Preferably the profile frame has a hollow chamber and in particular this hollow chamber has a profile cross-section that changes over the length of the profile frame. Further preferably the profile frame is designed as an extruded profile of a light metal or light metal compound, in particular aluminium or an aluminium compound, as a tube of a light metal or light metal compound, in particular aluminium or an aluminium compound welded on a longitudinal seam, as a tube of steel welded on a longitudinal seam or as a tube of steel produced seamless. The profile cross-section of the profile frame is adapted to and follows the form of the inside door panel.

Abstract: The invention relates to a lightweight door for motor vehicles, comprising a door box (1) which towards the top towards the window area is delimited by inner and outer window gutter profiles (3; 4); and comprising a window frame (5) made from light metal/light metal alloys, in particular aluminium/aluminium alloys; with said window frame (5) encompassing the window area, being permanently connected, in particular welded, to the door box (1), in particular to the inner window gutter profile (3), wherein said window frame (5) is made from an extruded and bent light metal profile, in particular a light metal profile bent by stretching and rolling.