JPH01233334A - Temperature sensor - Google Patents
Temperature sensorInfo
- Publication number
- JPH01233334A JPH01233334A JP6106688A JP6106688A JPH01233334A JP H01233334 A JPH01233334 A JP H01233334A JP 6106688 A JP6106688 A JP 6106688A JP 6106688 A JP6106688 A JP 6106688A JP H01233334 A JPH01233334 A JP H01233334A
- Authority
- JP
- Japan
- Prior art keywords
- cement material
- heat
- low
- hardness
- temperature sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 29
- 239000004568 cement Substances 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 5
- 238000003466 welding Methods 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims abstract description 3
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 230000035939 shock Effects 0.000 abstract description 8
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 4
- 239000010935 stainless steel Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 5
- 230000007774 longterm Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、自動車機器などの温度センサとして用いちれ
、特に、高耐熱性、耐振動、及び、耐熱衝撃が要求され
る自動車の排気系統などに有用な温度センサに関するも
のである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is widely used as a temperature sensor for automobile equipment, etc., and particularly for automobile exhaust systems that require high heat resistance, vibration resistance, and thermal shock resistance. The present invention relates to a useful temperature sensor.
従来の技術
従来、この種の温度センサは、第２図に示すような構成
であった。第２図において、１は耐熱金属からなる２本
の芯線であり、前記芯線１の両末端を除く全体を耐熱金
属管２に、ＭｇＯ粉体３に圧力、熱を加えて固めた状態
で組込み、ラジアルタイプ形ガラス封入サーミスタ素子
４を前記芯線１の一末端に接線し、前記ガラス封入サー
ミヌタ４のまわりを、低接着性、低硬度セメント材、ま
たは高接着性、高硬度セメント材６とともに、耐熱金属
管６に収納して保護する構成であった。2. Description of the Related Art Conventionally, this type of temperature sensor has had a configuration as shown in FIG. In Fig. 2, reference numeral 1 indicates two core wires made of heat-resistant metal, and the entire core wire 1 except for both ends is assembled into a heat-resistant metal tube 2 with MgO powder 3 hardened by applying pressure and heat. , a radial type glass-encapsulated thermistor element 4 is tangent to one end of the core wire 1, and the glass-encapsulated thermistor element 4 is surrounded by a low-adhesion, low-hardness cement material, or a high-adhesion, high-hardness cement material 6, It was configured to be housed in a heat-resistant metal tube 6 for protection.
発明が解決しようとする課題
このような従来の構成では、以下に示すような問題点が
あった。Problems to be Solved by the Invention This conventional configuration has the following problems.
（１） ラジアルタイプ形ガラス封入サーミスタ素子
４のまわりを高接着性、高硬度セメント材６で充填、保
護した場合、前記サーミスタ素子４のガラス表面と、前
記セメント材６が１強固に接着し、熱衝撃を与えると、
両者のわずかな熱膨張係数の違いによっても、前記サー
ミスタ素子４にガラスクラックを発生し、安定した性能
を維持できない。(1) When the radial type glass-encapsulated thermistor element 4 is filled and protected with a highly adhesive, high-hardness cement material 6, the glass surface of the thermistor element 4 and the cement material 6 are firmly bonded; When subjected to thermal shock,
Even a slight difference in thermal expansion coefficient between the two may cause glass cracks in the thermistor element 4, making it impossible to maintain stable performance.
（２） ラジアルタイプ形ガラス封入サーミスタ素子
４のまわりを低接着性、低硬度セメント材６で充填、保
護した場合、長期間にわたる振動を与えると、前記セメ
ント材６に、くずれが発生し。(2) When the radial type glass-encapsulated thermistor element 4 is filled and protected with a low-adhesion, low-hardness cement material 6, the cement material 6 will break if subjected to long-term vibration.
安定した性能を維持できない。Unable to maintain stable performance.
本発明はこのような問題点を解決するもので。The present invention is intended to solve these problems.
長期間の振動、熱衝撃に耐えることができる温度センサ
を提供することを目的とするものである。The purpose of this invention is to provide a temperature sensor that can withstand long-term vibration and thermal shock.
課題を解決するための手段
この課題を解決するために１本発明は、ガラス封入サー
ミスタ素子のまわりを低接着性、低硬度のセメント材で
コーティングし、そのまわりを高接着性、高硬度のセメ
ント材で充填、保護した構成とするものである。Means for Solving the Problem In order to solve this problem, the present invention coats the surroundings of a glass-encapsulated thermistor element with a cement material having low adhesiveness and low hardness, and coats the surrounding area with cement material having high adhesiveness and high hardness. The structure is filled with and protected by material.
作用
この構成により、ガラス封入サーミスタ素子のガラス材
とセメント材の強固な接着はなく、熱衝撃を与えてもガ
ラスクラックを発生することはない。また、そのまわり
を高硬度のセメント材で充填保護しているために、長期
にわたる振動に耐しても、セメント材のくずれを発生す
ることもない。Effect: With this configuration, there is no strong adhesion between the glass material of the glass-encapsulated thermistor element and the cement material, and no glass cracks will occur even if thermal shock is applied. Furthermore, since the surrounding area is filled and protected with a high-hardness cement material, the cement material will not collapse even if it withstands vibration for a long period of time.
従って、このような構成にすることにより、信頼性の高
い温度センサが提供できることとなる。Therefore, by adopting such a configuration, a highly reliable temperature sensor can be provided.
実施例
以下１本発明の一実施例について、第１図を用いて説明
する。EXAMPLE 1 An example of the present invention will be described below with reference to FIG.
第１図は本発明の一実施例による温度センサの断面図で
あり、第１図において、２本のステンレス鋼からなる芯
１１！１１の両末端を除く全体を、ステンレス鋼からな
る金属管１２内にＭｆＯ粉体１３を圧力、熱を加えて固
めた状態で組込み、ラジアルタイプ形ガラス封入サーミ
スタ素子１４を、前記芯線１１の一末端にプラズマスポ
ット溶接１７により接続した後に、前記ガラス封入サー
ミスタ素子１４のまわシを、低接着性、低硬度のセメン
）材１５でコーティングし、ステンレス鋼からなる金属
管１６とのすきまに高接着性、高硬度セメント材１８を
充填した構成である。FIG. 1 is a sectional view of a temperature sensor according to an embodiment of the present invention. In FIG. 1, two stainless steel cores 11! After incorporating the MfO powder 13 in a hardened state by applying pressure and heat, and connecting the radial type glass-encapsulated thermistor element 14 to one end of the core wire 11 by plasma spot welding 17, the glass-encapsulated thermistor element 14 is coated with a low-adhesion, low-hardness cement material 15, and the gap between it and a metal tube 16 made of stainless steel is filled with a high-adhesion and high-hardness cement material 18.
ここで、従来例及び本実施例における各種信頼性試験結
果を第１表に示す。Here, Table 1 shows the results of various reliability tests in the conventional example and the present example.
（以下余白）
第１表から明らかなように、サーミスタ素子４のまわり
に低接着性、低硬度のセメント材１６をコーティングし
、そのまわりを高接着性、高硬度のセメント材１８で充
填保護した本実施例の構造が、従来例に対し、耐振動性
および耐熱衝撃性が飛躍的に向上していることが解る。(Leaving space below) As is clear from Table 1, the thermistor element 4 was coated with a cement material 16 with low adhesion and low hardness, and the surrounding area was filled and protected with a cement material 18 with high adhesion and high hardness. It can be seen that the structure of this example has dramatically improved vibration resistance and thermal shock resistance compared to the conventional example.
発明の効果
以上のように本発明によれば、サーミスタ素子のまわり
を低接着性、低硬度のセメント材でコーティングするこ
とによりセメント材とサーミスタ素子のガラヌ材との強
固な接着を防ぎ、長期の熱衝撃に対してガラスクラック
を発生しない構造となり、さらに、そのまわりを、高接
着性、高硬度のセメント材で充填保護することで、長期
の振動に耐える高強度の構造となり、安定した性能を有
する温度センサの提供ができるという効果が得られる。Effects of the Invention As described above, according to the present invention, by coating the thermistor element with a cement material having low adhesion and low hardness, strong adhesion between the cement material and the guaranu material of the thermistor element is prevented, and long-term improvement is achieved. It has a structure that does not cause glass cracks when subjected to thermal shock, and by filling and protecting the surrounding area with a highly adhesive and highly hard cement material, it has a high-strength structure that can withstand long-term vibrations and provides stable performance. The advantage is that it is possible to provide a temperature sensor that has the following characteristics.
第１図は本発明の一実施例による温度センサを示す断面
図、第２図は従来の温度センサを示す断面図である。
１１・・・・・耐熱金属芯線、１２・・・・・・耐熱金
属管、１３・・・・・・ｗｙｏ粉体、１４・・・・・・
ラジアルタイプ形ガラス封入サーミスタ素子、１６・・
・・・・低接着性、低硬度セメント材、１６・・・・・
・耐熱金属管、１７・・・・・・プラズマスポット溶接
、１８・・・・・・高強度高硬度セメント材。FIG. 1 is a sectional view showing a temperature sensor according to an embodiment of the present invention, and FIG. 2 is a sectional view showing a conventional temperature sensor. 11... Heat-resistant metal core wire, 12... Heat-resistant metal tube, 13... wyo powder, 14...
Radial type glass-enclosed thermistor element, 16...
...Low adhesion, low hardness cement material, 16...
・Heat-resistant metal pipe, 17... Plasma spot welding, 18... High strength and high hardness cement material.
Claims (1)
金属管内にＭｇＯ粉体に圧力，熱を加えて固めた状態で
組込み、ラジアルタイプ形ガラス封入サーミスタ素子を
前記芯線の一末端にプラズマスポット溶接により接続し
、前記ガラス封入サーミスタ素子のまわりを低接着性，
低硬度のセメント材でコーティングし、それを耐熱金属
管に高接着性，高硬度のセメント材とともに充填してな
る温度センサ。Two core wires made of heat-resistant metal, except for both ends, are assembled into a heat-resistant metal tube with MgO powder solidified by applying pressure and heat, and a radial type glass-encapsulated thermistor element is attached to one end of the core wire in a plasma-filled state. Connected by spot welding, with low adhesiveness around the glass-encapsulated thermistor element.
A temperature sensor made by coating a low-hardness cement material and filling it into a heat-resistant metal tube with a highly adhesive, high-hardness cement material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63061066A JP2643253B2 (en) | 1988-03-15 | 1988-03-15 | Temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63061066A JP2643253B2 (en) | 1988-03-15 | 1988-03-15 | Temperature sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01233334A true JPH01233334A (en) | 1989-09-19 |
| JP2643253B2 JP2643253B2 (en) | 1997-08-20 |
Family
ID=13160411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63061066A Expired - Fee Related JP2643253B2 (en) | 1988-03-15 | 1988-03-15 | Temperature sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2643253B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03118432A (en) * | 1989-09-29 | 1991-05-21 | Terumo Corp | Electronic clinical thermometer and manufacture thereof |
| JPH06229840A (en) * | 1993-02-02 | 1994-08-19 | Nippondenso Co Ltd | Thermister temperature sensor |
| US6466123B1 (en) * | 1997-11-21 | 2002-10-15 | Denso Corporation | Temperature sensor and method of manufacturing same |
| KR100893103B1 (en) * | 2007-07-24 | 2009-04-14 | 주식회사 우진 | Alumina mandrel type Resistance Temperature Detector and its fabrication method |
| US20120043131A1 (en) * | 2009-02-11 | 2012-02-23 | Nedelco Christov | Method for Producing a Sensor with Seamless Extrusion Coating of a Sensor Element |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54179184U (en) * | 1978-06-07 | 1979-12-18 | ||
| JPS5931427A (en) * | 1982-08-14 | 1984-02-20 | Matsushita Electric Works Ltd | Filling method of silicone resin in sensor part |
| JPS62178338U (en) * | 1986-05-02 | 1987-11-12 |
-
1988
- 1988-03-15 JP JP63061066A patent/JP2643253B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54179184U (en) * | 1978-06-07 | 1979-12-18 | ||
| JPS5931427A (en) * | 1982-08-14 | 1984-02-20 | Matsushita Electric Works Ltd | Filling method of silicone resin in sensor part |
| JPS62178338U (en) * | 1986-05-02 | 1987-11-12 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03118432A (en) * | 1989-09-29 | 1991-05-21 | Terumo Corp | Electronic clinical thermometer and manufacture thereof |
| JPH06229840A (en) * | 1993-02-02 | 1994-08-19 | Nippondenso Co Ltd | Thermister temperature sensor |
| US6466123B1 (en) * | 1997-11-21 | 2002-10-15 | Denso Corporation | Temperature sensor and method of manufacturing same |
| DE19853668B4 (en) * | 1997-11-21 | 2006-12-21 | Denso Corp., Kariya | Temperature sensor and method for its production |
| KR100893103B1 (en) * | 2007-07-24 | 2009-04-14 | 주식회사 우진 | Alumina mandrel type Resistance Temperature Detector and its fabrication method |
| US20120043131A1 (en) * | 2009-02-11 | 2012-02-23 | Nedelco Christov | Method for Producing a Sensor with Seamless Extrusion Coating of a Sensor Element |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2643253B2 (en) | 1997-08-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |