Roofing plate with eave-sided plastic strip

Abstract

The invention relates to a roofing plate produced as an injection-moulded plastic piece, supporting a functional unit for fitting to the roof surface such as a roof ventilator, extended on the edge thereof with a predominantly plastically deformable strip, made from lead sheet for example, which extends into a groove in the boundary region of the injection-moulded plastic piece and is retained there with a positive fit against outward movement. The strip is exclusively arranged on the eave-sided edge of the roofing plate and the groove around the boundary region of the strip on the roof plate has groove edges inclined towards the groove opening in cross-sectional view.

1 . A roofing plate produced as a plastic injection molding for inclined roof surfaces, said roofing plate carrying a functional unit to be arranged in the roof surface and being widened at its margin with a predominantly plastically deformable strip which in contrast is scarcely elastically deformable or is not elastically deformable at all and is made of a planar material and which projects into a groove in the marginal region of the plastic injection molding and is held in a positive-locking manner therein against movement outward, characterized in that only that margin of the roofing plate which is on the eave side is provided in this way with a strip of predominantly plastically deformable planar material, and in that the groove enclosing the marginal region of the strip on the roofing plate is formed, in cross-sectional view, with groove flanks inclined downward toward the groove opening. 
   
   
       2 . The roofing plate as claimed in  claim 1 , characterized in that that marginal region of the strip which projects into the groove in that marginal region of the roofing plate which is on the eave side is perforated by apertures, and in that the plastic material of the roofing plate projects into these apertures. 
   
   
       3 . The device as claimed in  claim 1 , characterized in that the strip projects in its longitudinal direction on both sides beyond the width of the roofing plate. 
   
   
       4 . The device as claimed in  claim 1 , characterized in that the strip is designed with corrugations in its marginal region remote from the roofing plate. 
   
   
       5 . A method of producing a device as claimed in  claim 4 , characterized in that, as initial material for the strip, a flat strip of planar plastic material is inserted between the mold halves of the injection mold enclosing the mold cavity for the roofing plate, and in that the corrugations are embossed in the strip by the mold halves of the injection mold. 
   
   
       6 . The device as claimed in  claim 1 , characterized in that the strip is formed from a lead or copper alloy. 
   
   
       7 . The device as claimed in  claim 1 , characterized in that the strip is formed by a composite of metal and plastic.