Door for a motor vehicle

DETAILED DESCRIPTION I claim: 1.
A door for a motor vehicle, comprising an upper outer part provided with a window cutout, a lower outer part connected with the upper outer part, at least one safety reinforcing means arranged within the door, said reinforcing means extending in the vehicle longitudinal direction and constructed as hollow bearer means, the lower outer part of the door being a one-piece unitary lower outer part which includes a shell-shaped door outer element with an integrated hollow bearer means; wherein the door outer element includes a cover means of plastic material at its outer surface; and wherein the hollow bearer means has a circularly shaped cross section which is adjoined approximately in a vertical longitudinal center plane by the shell-shaped door outer element.
2.
A door according to claim 1, wherein the hollow bearer means is arranged approximately at the height of a belt line of the vehicle and the shell-shaped door outer element extends at least up to this belt line.
3.
A door according to claim 2, wherein the door outer element includes circumferential edge areas on which the cover means is form-locking retained.
4.
A door according to claim 3, wherein the cover means includes bead means extending along at least one of said edge areas and retained at the door outer element, said bead means having an outer edge sealingly surrounding and covering a door inner panel.
5.
A door according to claim 4, wherein the upper edge area of the door outer element is arranged overlappingly with respect to a further edge area of the upper door part and both edge areas are connected with each other under interposition of a tongue-shaped part of the cover means.
6.
A door according to claim 5, wherein the door outer element includes several reinforcing ribs arranged on the inside and extending approximately in the vehicle longitudinal direction.
7.
A door according to claim 6, wherein the door outer element is constructed in one piece with a formed-on lower horizontally extending leg which is connected in overlapping arrangement with a further leg of the door inner panel