Method of manufacturing temperature sensor and temperature sensor manufactured thereby
AssigneeDenso Corporation
InventorsTomohiro Adachi, Atsushi Kurano
Life of this patent
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Abstract
A temperature sensor for detecting a temperature of, for example, an exhaust gas of a vehicle is manufactured by inserting a thermistor element into a bottomed metal tube while filling an inside of the metal tube with a filler material, preferably of silicone oil, to reduce a sliding resistance between the thermistor element and the metal tube as an integral temperature sensing structure which is then mounted in a housing.
Claims28
A method of manufacturing a temperature sensor which comprises a bottomed metal tube and a thermistor element inserted into the metal tube, comprising the steps of:
- preparing a metal tube and a thermistor element;
- and
- inserting the thermistor element into the metal tube while filling an inside of the metal tube with a filler material to reduce a sliding resistance between the thermistor element and the metal tube.
A method of manufacturing a temperature sensor which comprises a bottomed metal tube and a thermistor element inserted into the metal tube, comprising the steps of:
- preparing a metal tube and a thermistor element;
- positioning an insertion side front end of the thermistor element to an open end portion of the metal tube;
- filling an inside of the metal tube with a filler material through a clearance between the front end of the thermistor element and the metal tube to reduce a sliding resistance between the thermistor element and the metal tube;
- and
- inserting the thermistor element into the metal tube.
A method of manufacturing a temperature sensor which comprises a bottomed metal tube and a thermistor element inserted into the metal tube, comprising the steps of:
- preparing a metal tube and a thermistor element;
- filling an inside of the metal tube with a filler material;
- positioning an insertion side front end of the thermistor element to an open end portion of the metal tube;
- and
- inserting the thermistor element into the metal tube while further filling the inside of the metal tube with the filler material through a-clearance between the front end of the thermistor element and the metal tube to reduce a sliding resistance between the thermistor element and the metal tube.
A method of manufacturing a temperature sensor which comprises a bottomed metal tube and a thermistor element inserted into the metal tube, comprising the steps of:
- preparing a metal tube and a thermistor element provided with an electrode wire from which a lead wire extends, a terminal being connected to the lead wire;
- inserting the thermistor element into the metal tube while filling an inside of the metal tube with a filler material to thereby form an integral structure of the metal tube and the thermistor element;
- mounting said integral structure to a housing from which the bottomed end portion of the metal tube extends outward;
- and
- feeding an electrical insulating material into the housing.
A temperature sensor comprising:
- a bottomed metal tube;
- a thermistor element provided with an electrode wire from which a lead wire extends, said thermistor element being inserted into the metal tube;
- a terminal electrically connected to the lead wire;
- a filler charged into the metal tube, said metal tube, said thermistor element and said filler being formed into an integral structure;
- and
- a housing into which said integral structure is mounted so that the bottomed end portion of the metal tube extends outward the housing.
Dependencies are inferred from the claim text.