Structure of a door for a motor-vehicle

A structure of a door for a motor vehicle including a multi-thickness metal sheet pressed and shaped to define:

• a hinge area configured for fastening of one or more hinges for connection to a body of a motor vehicle,
• a panel area separate from the hinge area and configured to receive a trim member for the door, and
• a frame area separate from the hinge and panel areas and configured for housing a window of the door,
• wherein said multi-thickness metal sheet has a first cross-sectional thickness in said hinge area, a second cross-sectional thickness in said panel area, and a third cross-sectional thickness in said frame area,
• wherein the first cross-sectional thickness is greater than said second cross-sectional thickness and said third cross-sectional thickness, and
• wherein said second cross-sectional thickness and third cross-sectional thickness are different, and
• wherein the multi-thickness metal sheet includes:
• a single, tailored rolled metal sheet having an absence of welding,
• an area-wise differentiated thickness, and
• a boundary line where the panel area and the frame area meet, said boundary line positioned in the multi-thickness metal sheet such that it is unexposed and not visible in the frame area with the interior trim member being coupled to the panel area.