A LINING SYSTEM FOR VEHICLES

Technical Field

The present invention relates to a lining system providing heat and sound insulation on the ceiling and side walls of a vehicle.

Prior Art

In the state of the art it is well known that there are insulation systems which are produced for heat and sound insulation in the vehicles, being realized with many various insulating materials. However, all the mentioned heat and sound insulating materials for vehicles cannot be used both for insulation purposes and for aesthetical appearance.

GB944433 discloses a sandwich panel of two layers. The first layer is thin and the second layer contains the main insulating material. Said insulating materials, are, resistant to sound and heat, such as melamine, polystrylene, and polyurethane.

DE4229641 discloses an insulation system which is flame retardant and in which insulating materials such as polyacrylate, homo- or copolymer, styrene- acrylonitrile copolymer, polystyrene and polyacrylonitrile are used as sound insulation.

FR2695669 describes another invention which is intended to be used in aviation, marine and rail transport modes. The panel in this application is formed of cellular melamine comprised of phenol particles in powder. Said panel contains cardboard or metal surfaces coated with plaster in the form of a honeycomb and is fireproof. ,

In another patent application numbered GB944433 a sandwiched acoustic panel is described, which is formed of thin layers and generally used for sound and heat insulation. The panel comprises a main layer formed of a fiberglass bound with a mixture of melamine and phenol-formaldehyde resin making the heat and sound

insulation, cover layer of woven glass cloth impregnated with a vinyl melamine resin, the cover layer having perforations, and a porous intermediate layer formed with cavities or depressions. Alternative materials for the panel are, for the cover layer, metal, plastics, paper, cardboard, fiberboard, or asbestos, in the form of sheets, woven cloth, or mats; for the interlayer, and base, natural or synthetic fibers, or foams of polystyrene, polyurethane, cellulose acetate, phenol formaldehyde or polyvinyl chloride. Alternative binder materials are epoxy-urea formaldehyde, and polyester resins.

But there is not any lining system used in the vehicles, which is properly resistant to moisture, heat and corrosion and deformation, providing heat and sound insulation and also self supporting. Panels made of various materials in the lining systems generally have to be mounted by using additional constructions. Other insulation systems are expensive to adapt to the vehicles. The reason is that panels for the lining system may be broken or folded during mounting and forming them with insulation panels and that corrosion shortens the lifespan of the system.

Short Description of the Invention

The aim of the present invention is to provide a two-layered lining system for vehicles, which is used on the ceiling and side walls, resistant to deformation, heat, water and corrosion and provides heat and sound insulation.

Another aim of the present invention is to provide a lining system comprising an insulation system of which the first layer is of a thin membranous and flexible construction and the second layer contains foams of melamine, polystrylene or polyurethane or foam rubber.

Another aim of the present invention is to provide a lining system comprising a flexible insulation system while at the same time being not breakable or bendable as a result of being self-supporting.

Another aim of the present invention is to provide a lining system comprising lining panels which can practically be mounted and removes the need for additional structures during mounting.

Another aim of the present invention is to provide a lining system in which the insulating materials used are made durable and therefore a lining system having an effective insulating material.

Another aim of the present invention is to provide a lining system which eliminates the urge to use insulating material between the framework panels in coaches and the like and thus decreases the costs and also the mounting workmanship for the producers.

Another aim of the present invention is to provide a lining system supporting in positive way the vehicle's strength and serving as a mounting surface by means of making additional bending extension near the ceiling for other equipment to be added to the ceiling surface.

Detailed Description of the Invention The inventive lining system is illustrated in the accompanying figures in which:

Figure 1 is a view of the main panel used in the lining system according to the present invention.

Figure 2 is the front view of the main panel used in the lining system according to the present invention.

Figure 3 is a cross-section view of the main panel and the protective panel used in the lining system according to the present invention.

Figure 4 is a cross-section view from the other end of the main panel and the protective panel used in the lining system according to the present invention.

Figure 5 is a view of the perforations drilled in the panels for mounting in the lining systems.

The parts in the abovementioned figures are given numerals as in the following:

1. Lining system

2. Main panel 3. Protective panel

4. Perforation

5. Bend

The lining system (1) according to the invention mainly comprises continuous foams of melamine, polystrylene or polyurethane or foam rubber and a main panel (2) for providing the insulation, a protective panel (3) of thin, membranous and flexible structure on the outer side of the main panel (2) for protecting it, and perforations (4) on the said main panel and the protective panel.

A sheet metal plate encircling the two panels (2, 3) is used for sustaining said main panel (2) and protective panel (3) in the lining system (1) according to the invention. After the sheet metal material is perforated protrusions are left on sides as bends (5). Said bends (5) in the form of outward protrusions are used and folded as required during the mounting, which encircle the main panel (2) and protective panel (3). After the sheet metal material is perforated it is painted with electrostatic powder paint and thus protected from heat and corrosion.

The protective panel (3) has a thin, membranous and flexible structure and protects the main panel (2) against damages.

The main panel (2) is comprised of melamine foam, polystrylene, or polyurethane foam or foam rubber depending on the functional feature required. The insulating material used in the main panel is continuous and has a thickness of 20 mm. The fact that the insulating material is continuous provides an effective insulation since it blocks the heat bridges breaking through the vehicle body walls.

Said lining system (1) for vehicles eliminates the urge for using insulating materials between framework panels in coach-type vehicles since the main panel (2), the protective panel (3) and sheet metal are mounted in a continuous way on the outer surface of the framework of the vehicle.

The mounting of panels (2, 3) to vehicle walls is realized by fastening them to the ceiling framework of the vehicle by means of coupling elements such as rivets, screws, and bolts. The main panel (1) fastened to the ceiling supports the vehicle's strength. And also equipment such as illuminating elements, handles, and pipe rails which cannot be fastened to the ceiling because of the hollow structure of the framework can easily be mounted on the bend (5) extensions since said bend (5) extensions on sides of the panels (2,3) and sheet metal constitute a mounting surface.

Sound insulation within the vehicle is realized by means of the perforations in the insulating materials of the lining system (1) according to the invention, which absorb the sound.

The advantage of heat insulation in the lining system (1) according to the invention is that the problem of condensation is decreased, being resulted from the difference in temperature because of the continuity principle in the main panel (2). Therefore the comfort increases. And also the system (1) does not break down or is not damaged due to the flexible structure of the protective panel (3).

Within this main concept the inventive lining system (1) can be developped in various embodiments and is not limited to the examples described herein and is actually as in the following claims.