Manufacturing method of a motor vehicle and motor vehicle thereby obtained

摘要

There is described a manufacturing method of motor vehicles which achieves the object of reducing the costs deriving from the manufacturing of vehicles belonging to different segments and the costs deriving from the traditional assembly of vehicles which starts from the external shell onto which the elements forming the interiors and the mechanical members are assembled, by suggesting the arrangement of a single self-supporting structural element formed by composite material, already provided with many interior elements, to which a new other interior elements, bodywork elements and mechanical elements can be connected in any assembly order.

主权项

1. A manufacturing method of motor vehicles mainly formed by bodywork elements, interior elements and mechanical members, which comprises the following steps:
a lower self-supporting structural element formed from a hollow composite plastic material is arranged, defining at least the lower portion of the passenger compartment of a vehicle, onto which mechanical elements, elements forming the bodywork and elements constituting the interiors are to the connected; one or more interchangeable bodywork elements for a particular vehicle design segment are independently arranged; one or more mechanical elements defining the vehicle performance in relation to the vehicle design segment to which belongs are independently arranged; one or more elements forming the vehicle interiors in relation to the vehicle design segment and a price range to which it belongs are independently arranged; one or more bodywork elements, mechanical elements and interior elements are assembled onto the lower self-supporting structural element in any sequence order; and stiffening the lower self-supporting element in relation to mechanical features which are obtained by the elements and in relation to mechanical vibrational features of the mechanical elements coupled either directly thereto; wherein the step of stiffening the lower self-supporting structural element comprises a step of injecting, into one or more internal cavities of the lower self-supporting structural element, a foam of variable density in relation to the mechanical features and the mechanical-vibrational features of the mechanical members coupled directly to the lower self-supporting element.