| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an oxygen sensor for achieving high reliability and a product life by preventing the occurrence of chipping or cracking on the bottom face outer edge of a separator during assembly to avoid the conditions of poor or impossible operation while sufficiently securing the strength of the separator. <P>SOLUTION: A heating element end storage hole 72e has a bottom face 18e, and a lead wire insertion hole 18a2 is communicated with the heating element end storage hole 72e in the peripheral direction. In the direction perpendicular to an axis O2 of the separator 18, a clearance forming part S which forms a fixed-distance clearance between a heater terminal 3b and the bottom face outer edge 18e1 of the separator 18 is formed on the heater terminal 3b and/or the separator 18. With the clearance forming part S formed on at least one of the heater terminal 3b and the separator 18, contact/interference between the heater terminal 3b and the bottom face outer edge 18e1 is prevented when inserting and assembling the rear end of the heating element 3 into the heating element end storage hole 72e. <P>COPYRIGHT: (C)2009,JPO&INPIT |
