Oxygen sensor for internal combustion engine, has contact spring whose leg portions are expanded while leg portion of shaft side pushes against electrical contact surface, when contact element is inserted between leg portions

摘要

A contact spring (31) inserted into storage chamber (25), has a pair of leg portions. When a contact element (36) is inserted between the leg portions, the leg portions are expanded and the leg portion at the side of shaft (24) pushes against a electrical contact surface (16).