Land vehicles: bodies and tops – Bodies – Structural detail
Patent
1996-12-13
1999-09-21
Pape, Joseph D.
Land vehicles: bodies and tops
Bodies
Structural detail
296186, 296901, B62D 2520
Patent
active
059543892
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention concerns a reinforced front part of plastic for use in the manufacture of cabins/bodies for vehicles.
BACKGROUND OF THE INVENTION
In the manufacture of vehicles there has long been a desire to be able to manufacture bodies consisting of as few components as possible, thus enabling production to be carried out in the most rational and reasonable manner possible. At the same time there is a desire for such parts to have as much strength as possible in order to give the vehicle the required rigidity and above all safety for both passengers and surroundings. In recent years plastics materials have been increasingly employed in the manufacture of cabins or bodies for vehicles. To some extent only individual elements of plastic have been used, but the development of new and modern plastics materials, and the production processes currently available have made it possible to make relatively large plates and body parts which can be assembled according to the prior art and attached to a framework for bodies by means of methods such as riveting, screwing, gluing, etc. The weakness of the methods used to date, however, is that when plate or panel elements of this kind are of a certain size they tend to become pliable and unstable with regard to shape. Thus there has been a requirement to be able to manufacture construction parts, which by means of three-dimensional shape reduce the number of panel elements which have to be employed in the construction of a body, while at the same time this three-dimnensional shape gives the construction element the greatest possible inherent strength. By means of a design of this kind it will also be possible to achieve a weight saving since the use of a heavy and expensive framework can be avoided.
This desire to provide larger body parts with a three-dimensional shape is particularly relevant in connection with the development of small, light vehicles, especially such as those designed to be powered electrically or operated with small, light engines. Body shape parts of this kind can constitute a front part or rear part of such vehicles and as the ultimate consequence of this, it could be envisaged that the entire vehicle body could be made in one piece, where only door and window elements have to be added.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a shape part, and especially a front part for use in the manufacture of a vehicle body or a vehicle cabin, where this front part will be able to fulfill the desired requirements for stability of shape and safety for the user of the vehicle, while at the same time the front part will be able to be manufactured in the simplest possible way in a moulding operation. A further object of the invention is to provide a reinforced front part which while fulfilling the rigidity and safety requirements is also as light as possible. The front part will also provide the possibility of fitting and mounting the elements which are required in this part of the body.
This object is achieved with a front part which is characterized by the features in the patent claims presented.
There are known in the prior art a number of proposals for the manufacture of body parts of plastics material produced in relatively large units. Thus, e.g., from European patent application no. 0 089 706 a method is known for manufacturing an open vehicle body possibly including the driver's seat, etc. with a volumetric structure of an elastic material. This construction, however, has no directly inherent rigidity and has to be inflated or filled with foam in order to provide safety for the user.
From GB patent publication no. 2 088 792 there is known a small vehicle which is based on the use of a traditional chassis frame, where the actual body part is composed of individual elements, including a downwardly open plastic part; these individual elements, however, have no inherent stability and only form a plate-shaped enclosure of a supporting frame construction to which the plate-shaped parts are attached.
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Ringdal Jan Otto
Ringdal, deceased Lars
A.S. Ringdal Patenter
Pape Joseph D.
Taltavull W. Warren
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