Patent ID: 6802929
Filing Date: 2004-10-12
Classification: B29C,B29K,B29L

Abstract:
A process for welding a plastic housing of an electrical device, comprising the steps of:providing an outer housing part comprising a cylindrical shell closed at one end; providing an inner housing part comprising a support element, in which electrical components are accommodated, and a cylindrical element having an outer diameter which is inferior to the inner diameter of said cylindrical shell of said outer housing part, said cylindrical element further comprising a peripheral rib having an outer diameter which is superior to the inner diameter of said cylindrical shell of said outer housing part; introducing said inner housing part into said outer housing part in such a way that said support element with said electrical components are enclosed by the two housing parts, and that said peripheral, annular rib is inside the outer housing part, about the open end thereof, whereby an annular contact zone is formed between said rib and said cylindrical shell of said outer housing part; and directing a laser beam to impinge on said peripheral, annular rib, through said cylindrical shell of said outer housing part, along said at least one contact zone to form a weld.