Described herein is a structure of a motor-vehicle door including a multi-thickness metal sheet pressed and shaped to define: a hinge area configured for fastening one or more hinges for connection to the body of a motor vehicle; a panel area configured for receiving an upholstery-trim element for the door; and a frame area configured for receiving a window of the door. The above multi-thickness metal sheet has a first thickness in said hinge area, a second thickness in said panel area, and a third thickness in said frame area.

A frame structure of a vehicle includes: a first member composed of a metal plate, and a second member composed of a metal plate having a thickness thinner than that of the first member, the second member integrally connected to the first member by welding. The connection portion between the first member and the second member has an inclined surface configured to obliquely connect an upper surface of the first member and an upper surface of the second member such that the upper surface of the second member is positioned to be lowered than the upper surface of the first member in a gradual manner.

Described herein is a structure of a motor-vehicle door including a multi-thickness metal sheet pressed and shaped to define: a hinge area configured for fastening one or more hinges for connection to the body of a motor vehicle; a panel area configured for receiving an upholstery-trim element for the door; and a frame area configured for receiving a window of the door. The above multi-thickness metal sheet has a first thickness in said hinge area, a second thickness in said panel area, and a third thickness in said frame area.

A hybrid weld joint for joining sheet metal pieces together. According to one example, the hybrid weld joint exhibits characteristics of both butt welds and lap joints and is used to create a tailor-welded blank assembly where at least one sheet metal piece is made of aluminum or an aluminum-based alloy. Such a tailor-welded blank assembly is particularly suitable for the automotive industry.

An intermediate shell for a motor vehicle door, in particular a side door of a motor vehicle, is disclosed. The intermediate shell is produced at least in regions from a light metal blank by massive forming, preferably by forging.

The invention relates to a motor vehicle door comprising a structure-forming unit and a glazed unit assembled with each other. According to the invention, the structure-forming unit has a first frame and said glazed unit has a second frame, said first frame and said second frame being essentially superimposed, said first frame and/or said second frame bear at least one complementary centering element enabling them to be assembled, each centering element controlling the position of the second frame relative to said first frame along at least one direction, said first frame and/or said second frame bear fixed-attachment elements enabling definitive attachment to each other, said second frame comprises two guide rails slidingly guiding a mobile glazed panel between a closed position and at least one open position, said mobile glazed panel resting, in closed position, against said second frame such that the latter is situated between said first frame and said mobile glazed panel, said mobile glazed panel bears, on its face oriented towards the interior of the vehicle, at least two guide skids, each mounted so as to be sliding relative to one of said guide rails, and the position of at least one of said skids relative to said mobile glazed panel is adjustable.