CONNECTION STRUCTURE OF ELECTRIC LEAD-IN TERMINAL

摘要

An electric lead-in terminal connection structure for connecting an electric lead-in terminal to a conductive element buried in a ceramic solid having a hole formed therein so as to cross the conductive element. The electric lead-in terminal consists of a high-melting-point metal close in thermal expansion coefficient to the ceramic solid, and comprises a fitting member substantially the same in shape as the inner space of the hole and a chemical-durability terminal member to be joined with the fitting member. The fitting member is fitted into the hole in the ceramic solid for electrical connection with the conductive element exposed on the inner wall surface of the hole. The above construction allows only the fitting member to contact the ceramic solid, thereby reducing a thermal stress between the electric lead-in terminal and the ceramic solid.