Patent Publication Number: US-2022235497-A1

Title: Protective cover for a motor vehicle body

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims priority to German Patent Application No. 10 2021 101 908.7, filed Jan. 28, 2021, the content of such application being incorporated by reference herein in its entirety. 
     FIELD OF THE INVENTION 
     The present invention relates to a protective cover for a motor vehicle body. Protective covers are used predominantly on the inside of the motor vehicle body. They are likewise also utilized in a front or rear region of the motor vehicle body. 
     BACKGROUND OF THE INVENTION 
     DE 10 2013 223 504 A1, which is incorporated by reference herein, discloses an adhesive tape in water-resistant and flame-retardant form. The adhesive tape is based on a modified polylactic acid, and is used for bundling and securing of cables. 
     EP 1 315 781 B1, which is incorporated by reference herein, likewise discloses an adhesive tape that serves for wrapping of cables, being wound around the cables in spiral form. A carrier of the adhesive tape consists of a nonwoven having an acrylate system on one side that is utilized as adhesive and is applied in strips. For flame retardancy, red phosphorus, organophosphorus, mineral or intumescent compounds of ammonium polyphosphate together with synergists such as antimony trioxide are added to the nonwoven or to the acrylate system. 
     WO 2010/057478 A2, which is incorporated by reference herein, discloses a flexible composite system consisting of a fabric layer, carbon fibers and a resin which bonds the fabric layer to the carbon fibers, and which maintains the flexibility of the composite system. After curing, an adhesive is applied to the composite system beneath the fabric layer. The composite system is used for the lining of motor vehicle bodies. 
     SUMMARY OF THE INVENTION 
     Described herein is an improved protective cover for a motor vehicle body. 
     A protective cover of the invention for a motor vehicle body has a main body having a first coating and a second coating. According to the invention, the main body is formed from a flame-retardant fabric, wherein the first coating is an adhesive layer and the second coating is a metal layer. 
     It is a feature of the protective cover of the invention that it is, in particular, compatible with paint and corrosion-resistant. On account of the adhesive layer, it has high adhesion and is watertight. 
     Especially if the flame-retardant fabric is a flame-retardant glass weave, and/or the first coating is an acrylic adhesive layer, and/or the second coating is an aluminum coating, and preferably if the main body is accommodated in particular directly between the first coating and the second coating, it is flame-retardant, and it has a holding power of more than 6 min at 1000° C. Furthermore, it can be applied in an automated manner, which results in inexpensive manufacture of the motor vehicle body. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Further advantages, features and details of the invention will be apparent from the description of preferred working examples that follows, and from the drawing. The features and combinations of features specified above in the description and the features and combinations of features specified hereinafter in the description of figures and/or shown in the figures alone are usable not just in the particular combination specified but also in other combinations or on their own without leaving the scope of the invention. Elements that are the same or have the same function are assigned identical reference numerals. For reasons of clarity, it is possible that the elements are not given their reference numeral in all FIGs, but do not lose their assignment. The figures show: 
         FIG. 1  a perspective view of a protective cover of the invention for a motor vehicle body in a first working example, 
         FIG. 2  a perspective view of the protective cover of the invention for a motor vehicle body in a second working example, 
         FIG. 3  a perspective view of the protective cover of the invention for a motor vehicle body in a third working example, and 
         FIG. 4  a perspective view of the protective cover of the invention for a motor vehicle body in a fourth working example. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     An inventive protective cover  1  for a motor vehicle body  2  is designed according to  FIGS. 1 to 4 . 
     The protective cover  1 , which can also be referred to as protective pad or heat protection pad or sealing cap, serves to cover an opening, not shown in detail, which is formed in the motor vehicle body  2 , preferably establishing a flush arrangement with a body surface, not shown in detail, of the motor vehicle body  2  that surrounds the opening. It would thus be possible, for example, for a fusebox, not shown in detail, which is arranged within the motor vehicle body  2  to have coverage with the protective cover  1  for prevention of visibility of the fusebox from an interior of the motor vehicle body  2 . However, numerous arrangements of the protective cover  1  in the motor vehicle body  2  are conceivable. 
     The protective cover  1  fundamentally takes the form of a plate or disk, especially having a low thickness  11 . It has a main body  3  formed from a flame-retardant glass weave. The main body  3  is formed between a first coating  4  and a second coating  5 , with the first coating  4  in the form of an adhesive layer, preferably an acrylic adhesive layer  4 , and the second coating  5  being a metal coating, preferably an aluminum coating. Since the main body  3  is a fabric, it will be apparent that the coatings  4 ,  5  are also disposed at least in one edge region  6  of the main body  3 . 
     In a first working example according to  FIG. 1  and a second working example according to  FIG. 2 , the protective cover  1  has a round outline  7 , with this round outline  7  of the protective cover  1  according to the first working example being interrupted by two projections  8 . 
     In a third working example according to  FIG. 3  and a fourth working example according to  FIG. 4 , the protective cover  1  has an essentially rectangular or square outline  7  having rounded edges  9 . It would likewise be possible for the edges  9  to be in sharp-edged form. 
     The protective cover  1  in the third working example has an indentation  10  that interrupts the rectangular outline  7 . In principle, the protective cover  1  may also have an outline  7  different from the outlines  7  depicted by way of example. 
     LIST OF REFERENCE NUMERALS 
       1  protective cover 
       2  motor vehicle body 
       3  main body 
       4  first coating 
       5  second coating 
       6  edge region 
       7  outline 
       8  projection 
       9  edge 
       10  indentation 
       11  thickness