Structure of gas sensor

Abstract

A gas sensor is provided which includes a first cylindrical insulation porcelain having a gas sensor element installed therein and a second cylindrical insulation porcelain disposed in contact with the first insulation porcelain. The first insulation porcelain is disposed on a seat surface formed on an inner wall of a housing through a packing ring. A contact between the first and second insulation porcelains being located within a contact permissible range defined by projecting outer and inner edges of the packing ring onto an end surface of the first insulation porcelain, thereby minimizing a lateral shift between the contact and the packing ring to avoid the breakage of the first insulation porcelain during assembly or use of the gas sensor.

Dependencies are inferred from the claim text.