# US 2014/0153612 A1 · Temperature detector, temperature sensor and method for manufacturing the temperature detector > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0153612 A1 - Document ID: US20140153612A1 - Status: Published application - Kind: A1 - Application number: 14/093,218 - Filed: 2013-11-29 - Published: 2014-06-05 - Earliest claimed: 2012-11-30 - Assignees: Futaba Corporation - Applicants: Futaba Corporation - Inventors: Takumi YONEKURA - Web page: https://patentgrep.com/patent/US20140153612A1 ## CPC - G01K 7/02: using thermoelectric elements, e.g. thermocouples - G01K 1/14: Supports; Fastening devices; Arrangements for mounting thermometers in particular locations - Y10T 29/49002: Electrical device making - G01K: MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR (radiation pyrometry G01J5/00) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract There is provided a temperature detector adapted to be provided in a temperature sensor for detecting a temperature of a temperature detection target. The temperature detector includes a cylindrical fixing body made of a metal material, the cylindrical fixing body having a single through hole extending therethrough and one axial end portion serving as a fixing portion, a thermocouple having a pair of wires partially inserted into the through hole and a welding material welded to the fixing portion while being at least partially inserted into the through hole to fix the thermocouple to the fixing portion. An end of the thermocouple is exposed on a surface of the welding material by polishing the welding material together with the thermocouple. ## Claims ### Claim 1 A temperature detector adapted to be provided in a temperature sensor for detecting a temperature of a temperature detection target, comprising: a cylindrical fixing body made of a metal material, the cylindrical fixing body having a single through hole extending therethrough and one axial end portion serving as a fixing portion; a thermocouple having a pair of wires partially inserted into the through hole; and a welding material welded to the fixing portion while being at least partially inserted into the through hole to fix the thermocouple to the fixing portion, wherein an end of the thermocouple is exposed on a surface of the welding material by polishing the welding material together with the thermocouple. ### Claim 2 (depends on 1) The temperature detector of claim 1, wherein a receiving surface for receiving a pressure exerted from the welding material toward the other axial end of the cylindrical fixing body is formed in the fixing portion. ### Claim 3 (depends on 2) The temperature detector of claim 2, wherein the receiving surface is an inclined surface, which is inclined outwardly as it goes toward the one axial end of the cylindrical fixing body. ### Claim 4 (depends on 2) The temperature detector of claim 2, wherein the receiving surface is formed to face the one axial end of the cylindrical fixing body. ### Claim 5 (depends on 1) The temperature detector of claim 1, wherein the surface of the welding material is planarized to be positioned on the same plane as a surface of the one axial end of the cylindrical fixing body. ### Claim 6 (depends on 1) The temperature detector of claim 1, wherein the welding material is silver. ### Claim 7 A temperature sensor for detecting a temperature of a temperature detection target, comprising: a cylindrical sleeve; and a temperature detector inserted into one axial end portion of the sleeve, wherein the temperature detector include: a cylindrical fixing body made of a metal material, the cylindrical fixing body having a single through hole extending therethrough and one axial end portion serving as a fixing portion; a thermocouple having a pair of wires partially inserted into the through hole; and a welding material welded to the fixing portion while being at least partially inserted into the through hole to fix the thermocouple to the fixing portion, wherein an end of the thermocouple is exposed on a surface of the welding material by polishing the welding material together with the thermocouple. ### Claim 8 (depends on 7) The temperature sensor of claim 7, wherein the cylindrical fixing body is formed as one unit with the sleeve. ### Claim 9 (depends on 7) The temperature sensor of claim 7, wherein the temperature detector is press-fitted into the sleeve, and a receiving portion, which receives the cylindrical fixing body of the inserted temperature detector, is formed inside the sleeve. ### Claim 10 (depends on 7) The temperature sensor of claim 7, wherein one or more receiving members are press-fitted into the sleeve, and the temperature detector is press-fitted into the sleeve so that the cylindrical fixing body of the temperature detector is received on the receiving members. ### Claim 11 A method for manufacturing a temperature detector adapted to be provided in a temperature sensor for detecting a temperature of a temperature detection target, the method comprising: forming a cylindrical fixing body having one axial end serving as a fixing portion by forming a single through hole by processing a metal material; inserting a part of the thermocouple having a pair of wires into the through hole; welding the thermocouple to the fixing portion by a welding material at least partially inserted into the through hole; and exposing an end of the thermocouple on a surface of the welding material by polishing the welding material together with the thermocouple.