| 摘要 |
An oxygen sensor having a high reliability without penetration of water is disclosed. The oxygen sensor has a solid electrolyte consisting of a tubular body closed at its one end, having inner and outer electrodes, and received gastightly in a housing; a center conductor pressed and electrically connected to the inner surface electrode by a pressing force of a spring; an outwardly extended rim formed at the end portion of a tubular connecting terminal, which penetrates through a first insulating body supported by the upper end of a metallic container connected to the housing and is connected to the center conductor through a conductor; and a second insulating body which is slidable with respect to the metallic container and is arranged between another end of the above described spring, which is connected at its one end to the center conductor having the same potential as that of the inner electrode, and the rim of the connecting terminal.
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