GEHAEUSE FUER ELEKTRONISCHE BAUGRUPPEN MIT AUF EINER GEHAEUSEFLAECHE ANGEORDNETEN BEDIENELEMENTEN, INSBESONDERE TASTATUREN.

摘要

The housing has a bottom section made of metal and a top surface provided by a circuit board with a conductor pattern applied to its inside face, the top face carrying a metallised coating, which contacts the bottom section of the housing. The housing contains a number of electrical component groups which can be easily replaced. The contact between the metallised circuit board coating and the bottom section of the housing is provided by spring contact elements e.g. adjacent each corner edge of the housing. At least one edge of the circuit board may have a Sn coating coupled to the metallised circuit board coating.