Thermistor element and manufacturing method therefor
US-2017301437-A1 · Oct 19, 2017 · US
Temperature sensor element and method for manufacturing temperature sensor element
US2022283037A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022283037-A1 |
| Application number | US-202017628500-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 17, 2020 |
| Priority date | Oct 3, 2019 |
| Publication date | Sep 8, 2022 |
| Grant date | — |
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Abstract
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A temperature sensor element includes: an element main body including a heat sensitive body including a thermistor sintered body of which the electrical characteristics change with temperature, and a pair of lead wires that is connected to the heat sensitive body through electrodes; and a protective layer that protects the heat sensitive body. The protective layer has an inner protective layer covering the heat sensitive body and an outer protective layer covering the outer side of the inner protective layer. The inner protective layer is formed of an aggregate of particles that are chemically stable with respect to the thermistor sintered body and made of non-metal.
First claim
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1 - 5 . (canceled) 6 . A temperature sensor element comprising: a heat sensitive body including a thermistor sintered body of which electrical characteristics change with temperature; a pair of lead wires connected to the heat sensitive body through electrodes; and a protective layer covering the heat sensitive body, wherein the protective layer has an inner protective layer covering the heat sensitive body and an outer protective layer covering an outer side of the inner protective layer, and wherein the inner protective layer is formed of an aggregate of particles that are chemically stable with respect to the thermistor sintered body and made of non-metal. 7 . The temperature sensor element according to claim 6 , wherein a filling rate of the particles in the inner protective layer is 88% or less. 8 . The temperature sensor element according to claim 6 , wherein the aggregate of the inner protective layer includes one or two or more of oxide particles, carbide particles, nitride particles, and boride particles. 9 . The temperature sensor element according to claim 7 , wherein the aggregate of the inner protective layer includes one or two or more of oxide particles, carbide particles, nitride particles, and boride particles. 10 . The temperature sensor element according to claim 6 , wherein the aggregate of the inner protective layer includes thermistor particles having the same composition as the thermistor sintered body. 11 . The temperature sensor element according to claim 7 , wherein the aggregate of the inner protective layer includes thermistor particles having the same composition as the thermistor sintered body. 12 . The temperature sensor element according to claim 8 , wherein the aggregate of the inner protective layer includes thermistor particles having the same composition as the thermistor sintered body. 13 . The temperature sensor element according to claim 9 , wherein the aggregate of the inner protective layer includes thermistor particles having the same composition as the thermistor sintered body. 14 . A manufacturing method of a temperature sensor element including a heat sensitive body including a thermistor sintered body of which electrical characteristics change with temperature, a pair of lead wires connected to the heat sensitive body through electrodes, and a protective layer covering the heat sensitive body, the manufacturing method comprising: a first step of providing an inner protective layer that covers the heat sensitive body; and a second step of providing an outer protective layer that covers an outer side of the inner protective layer, wherein, in the first step, the inner protective layer formed of an aggregate of particles that are chemically stable with respect to the thermistor sintered body and made of non-metal is provided.
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Classifications
having negative temperature coefficient · CPC title
Chromium oxides, chromates, or oxide-forming salts thereof · CPC title
Silicon oxide, silicic acids or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint · CPC title
Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina · CPC title
Boron nitrides · CPC title
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- What does patent US2022283037A1 cover?
- A temperature sensor element includes: an element main body including a heat sensitive body including a thermistor sintered body of which the electrical characteristics change with temperature, and a pair of lead wires that is connected to the heat sensitive body through electrodes; and a protective layer that protects the heat sensitive body. The protective layer has an inner protective layer …
- Who is the assignee on this patent?
- Shibaura Electronics Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G01K1/10. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Sep 08 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).