ROHRFÖRMIGER SCHALTKREISVERBINDER

摘要

Disclosed is a rubber-based tubular circuit connector (4) used for electric connection between two oppositely facing sets of electrode terminals in assemblage of electronic instruments. The tubular connector comprises an elongated core tube (1) of an insulating rubber such as a silicone rubber and a multiplicity of ring-formed cladding layers (6) thereon arranged at a regular pitch to provide the contacting surface. Each of the ring-formed cladding layers has a bilayered structure consisting of a coating layer of a synthetic resin formed on the core tube and contacting layer of gold formed on the coating layers of the synthetic resin. The rubber-based tubular connector is prepared by (a) forming a uniform coating layer of a synthetic resin on a tubular body of a silicone rubber, (b) partially removing the coating layer from ring-formed areas by using a laser beam to form ring grooves (5) reaching the surface of the core tube, and (c) forming plating layers of gold on the ring-formed coating layers of the synthetic resin.