Vehicle body composed of at least two prefabricated subassemblies, and method for the production thereof

Abstract

The invention relates to a vehicle body composed of at least two prefabricated subassemblies (2, 3, 4) as well as a method for producing such a vehicle body. The inventive vehicle body is inexpensive to produce and can be assembled without any problem from prefabricated subassemblies. This is achieved by that fact that the subassemblies (2, 3, 4) are unremovably joined to each other in a joining zone by positively and / or non-positively joining together a sheet metal section (13, 14; 19, 20; 22, 23; 28, 29) of one subassembly (2, 3, 4) that meets a metal sheet (13, 14; 19, 20; 22, 23; 28, 29) of the other subassembly (2, 3, 4) in the joining zone in a joining process in which at least one of the sheet metal sections (13, 14; 19, 20; 22, 23; 28, 29) is cold-formed while an access channel (Z1, Z2) that extends along at least some sections of the joining zone and is accessible from outside is embodied in at least one of the subassemblies so as to be able to introduce a joining tool.

Description

technical field [0001] The invention relates to a motor vehicle body, which is assembled from at least two pre-series-produced components, and to a method for producing such a body. Background technique [0002] In the field of vehicle body construction, there is an increasing demand for the lightest possible body weight while achieving an optimized deformation behavior in the event of an accident. The reduced weight of the vehicle body results in a correspondingly low drive energy consumption of the vehicle. Through optimized crash behavior, the vehicle user is best protected in the event of an accident. [0003] In the field of automobile construction, a further requirement with regard to cost-effective production is that the individual components of the motor vehicle to be manufactured be produced to the highest possible degree of completion before they are joined together to form the final vehicle. By means of individual prefabrication, the assembly of the individual p...

AI Technical Summary

Problems solved by technology

[0006] The disadvantage here is that expensive structural and manufacturing-technical measures are necessary to be able to produce a body structure that is sufficiently rigid and meets current requirements in this way

It has also been shown that, for example, when individual components are to be bonded to each other, large amounts of adhesive are required which on the one hand reduce the weight advantage obtained by using light materials for the manufacture of the components and on the other hand only Bring greater time and equipment consumption than traditional manufacturing

Regardless of whether the prefabricated components are connected to each other in a known manner by welding, screwing, riveting, gluing or in other ways as mentioned above, there is the problem that the degree of prefabrication is limited by the joining method respectively applied or by the The operations required for joining are so complex that they negate the advantages of prefabrication

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