Land vehicles: bodies and tops – Bodies – Auxiliary article compartments
Patent
1997-02-28
1999-11-09
Pedder, Dennis H.
Land vehicles: bodies and tops
Bodies
Auxiliary article compartments
296 393, 221542, B60R 700
Patent
active
059799625
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a shaped part for load floor lining, in particular for motor vehicles, in particular for station wagons, having integrated sound insulation properties, which can be fitted into the vehicle as a complete unit and, upon later vehicle recycling, can be removed likewise as a complete unit.
From German Utility Model No. 73 40 373 there is known a shaped lining part for trunks which consists of a plastics layer which is applied to a felt material. This felt material should be characterized by a high flexibility and compressibility, so that together with the plastics layer--which for example may be a light polyethylene foil--a wrinkle-free and easily effected shaping process, with e.g. the aid of vacuum pressure, is possible. However, no indication is given with regard to how a shaped part is to be configured for trunks, and what criteria it must meet in order to improve noise comfort in particular in the passenger cabins of station wagons.
European Patent Application 0 474 593 A1 describes a sound insulating and sound damping composite member which can be employed for lining trunks. This sound insulating and sound damping composite member consists of an insulation covering which lies loosely on the floor part and is provided on the rear side with variously configured channels. By means of the structure of the channels, taken together with the floor part, it is intended to achieve an anisotropic air flow resistance, so that the lateral air flow resistance, running in the direction of the plane of the laid member, is smaller than the transverse air flow resistance, running in the thickness direction. The acoustic effect is indicated on the basis of measured data. For example in FIG. 3 of that application, there is illustrated the frequency dependent form of the sound insulation effect for a so-called classical sound insulation system in comparison with the sound insulation effect of the proposed arrangement. The system configuration in accordance with European Patent Application 0 474 593 A1 is very complicated, is thereby complex in manufacture and is relatively expensive and--because of its geometric configuration--in no way makes possible the exploitation of contour depressions or indentations in the load space floor as storage space or for accommodating electronic component elements. As can be seen from the measurement curves illustrated in FIG. 3 of that application, the sound insulating and sound damping effect of this system is not sufficiently effective in all frequency ranges.
The object of the present invention is, therefore, to provide an overall load floor lining for motor vehicles, in particular station wagons having large rear load floors, which with simple construction provides high acoustic effectiveness over the whole frequency range even in the case of an empty or only partially occupied load floor.
The above object is achieved by means of the features of claim 1. The subclaims indicate advantageous further developments of the inventive concept.
Thus, in accordance with the invention, there is provided a one-piece removable load floor lining configuration, consisting of an upper and a lower shell, whereby the upper shell may contain a plurality of lids or flaps--which may be divided--and the lower shell covers over the entire available surface. The upper shell is connected with the lower shell in a hinged manner. The region above the spare wheel can be formed as a flap or lid with an opening in the vehicle direction, and as a divided flap or lid having a double-wing hinging in the direction of the vehicle longitudinal axis. By these means, the accessability to storage compartments is improved, when for example the load floor is not completely occupied by a load.
Hollow spaces of the load floor, predetermined structurally, are employed as storage compartments for various purposes, inter alia for accommodating electronic components which previously have been accommodated with relatively poor accessibility either in the engine compartment or in the passenger compartment. The
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Kutter-Schrader Hans
Valentin Erhard
Walendy Hans
Pedder Dennis H.
Stankiewicz GmbH
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