Sealing cover for a processing hole in aluminum sheet metal

摘要

The present cover is used for permanent sealing of an oval-shaped processing hole ( 7 ) in aluminum sheet metal ( 8 ) by means of an adhesive joint. The cover consists of a circular cover plate ( 1 ) of aluminum with a concentric cover edge ( 2 ) and a ring-shaped strip ( 3 ) of hot-melt adhesive applied within the cover edge ( 2 ). The interior region of the cover plate ( 1 ) is connected to a spring plate ( 5 ) aligned plane-parallel with the cover plate at a spacing of the thickness of the aluminum sheet metal ( 8 ). The outer edge ( 6 ) of the spring plate ( 5 ) has a contour that corresponds to the shape of the oval processing hole ( 7 ) and includes quarter-circular spring tongues ( 11 ) which are brought to a tight fit by spring force against the back side of the aluminum sheet metal ( 8 ) by a quarter turn of the cover plate to produce the necessary pressure on the adhesive strip ( 3 ).