Patent ID: 11933750
Assignee: NITERRA CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 1:
2. A sensor comprising at least:
an insertion member and
a ceramic member having an insertion section into which the insertion member is inserted;
the sensor being characterized in that
the insertion section has at least an insertion opening which opens on a deeper side of an introduction opening in a surface of the ceramic member while communicating with the introduction opening and into which the insertion member can be inserted;
the insertion section further has a straight portion and a deeper-side taper hole portion in this order from the introduction opening in a region through which the introduction opening and the insertion opening communicate with each other;
the straight portion extends from the introduction opening toward the insertion opening; and
the deeper-side taper hole portion is connected to the insertion opening while becoming narrower from the straight portion toward the insertion opening,
wherein the insertion section forms a through hole extending from the insertion opening toward a deeper side, and
wherein the sensor further comprises a sensor element extending in a direction of an axial line, the ceramic member is a separator, and the insertion member is a lead wire electrically connected to the sensor element.