Keyboard assembling unit using template - placing contact springs for sticking to pressed foil followed by transfer to switch plate

摘要

A simplified switchboard features a template (2) for locating contact springs (I). A stamp (5) carries a self-adhesive layer for the foil (3). The replacement of the template by the switch plate allows the attachment of the contact springs to be carried out according to required positions. This eliminates the use of a mask for fixing the contact springs.