JPS6122284Y2 - - Google Patents
Info
- Publication number
- JPS6122284Y2 JPS6122284Y2 JP4437381U JP4437381U JPS6122284Y2 JP S6122284 Y2 JPS6122284 Y2 JP S6122284Y2 JP 4437381 U JP4437381 U JP 4437381U JP 4437381 U JP4437381 U JP 4437381U JP S6122284 Y2 JPS6122284 Y2 JP S6122284Y2
- Authority
- JP
- Japan
- Prior art keywords
- humidity sensor
- stem
- electrode
- lead wires
- moisture
- 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.)
- Expired
Links
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 3
- 229910000531 Co alloy Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 2
- 229910000990 Ni alloy Inorganic materials 0.000 claims 1
- 230000000694 effects Effects 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 206010040844 Skin exfoliation Diseases 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 229910001925 ruthenium oxide Inorganic materials 0.000 description 2
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910018068 Li 2 O Inorganic materials 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Description
【考案の詳細な説明】
本考案は素子の支持構造を改良した湿度センサ
に関する。[Detailed Description of the Invention] The present invention relates to a humidity sensor with an improved element support structure.
従来湿度センサは第１図に示すように数種類の
金属酸化物を混合し例えば円板状に成形焼結して
なる感湿素子１の表裏両面に金ペースト、銀ペー
ストまたは酸化ルテニウムペーストなどの導電性
電極剤を塗布焼付し電極２を形成し該電極２にリ
ード線３ａ，３ｂを取着する。しかして該リード
線３ａ，３ｂとステム４に一体固着してなる外部
端子５ａ，５ｂとを取着したのち周辺に通気孔部
６を設けたケース７に収納し該ケース７開口部を
封口樹脂８で封止してなるものである。９はステ
ム４内に充填したガラス、磁器などの絶縁体であ
る。しかしながら上記のような構成になる湿度セ
ンサは前記感湿素子１部がリード線３ａ，３ｂの
みによつて支持されているため例えばエアコンデ
イシヨナまたは冷蔵庫のような特に振動を伴うよ
うな機器にセツトして使用した場合、振動による
ストレスがリード線３ａ，３ｂと電極２の取着部
にかかりこの部分が剥離してしまうという致命的
な不良になる欠点を有してと同時に完全剥離の状
態にいたらずも接触が不充分になり湿度センサと
しての機能を低下してしまう欠点をも有してい
た。そのため太いリード線を用いさらに電極との
取着面積を多くとることも考えられるが電極面の
気孔をそれだけふさぎ電極の有効面積を小さくす
ることになり湿度センサとして応答速度が遅くな
り充分な機能を発揮し得ない欠点があり有効な対
策とは言えなかつた。 As shown in Fig. 1, a conventional humidity sensor is made by mixing several types of metal oxides and molding and sintering the mixture into a disk shape.A humidity sensing element 1 is coated with conductive paste such as gold paste, silver paste, or ruthenium oxide paste on both the front and back surfaces. An electrode 2 is formed by applying and baking a polarizing electrode agent, and lead wires 3a and 3b are attached to the electrode 2. After attaching the lead wires 3a, 3b and the external terminals 5a, 5b integrally fixed to the stem 4, the case 7 is housed in a case 7 having a ventilation hole 6 around it, and the opening of the case 7 is sealed with resin. It is sealed with 8. 9 is an insulating material such as glass or porcelain filled in the stem 4. However, in the humidity sensor configured as described above, the first part of the humidity sensing element is supported only by the lead wires 3a and 3b, so it is not suitable for use in equipment that is particularly subject to vibration, such as an air conditioner or a refrigerator. When used as a set, the stress due to vibration is applied to the attachment part of the lead wires 3a, 3b and the electrode 2, causing this part to peel off, resulting in a fatal defect. However, it also has the disadvantage that contact is insufficient and its function as a humidity sensor is degraded. Therefore, it is possible to use thick lead wires and increase the attachment area with the electrode, but this will block the pores on the electrode surface and reduce the effective area of the electrode, resulting in a slow response speed and insufficient functionality as a humidity sensor. It could not be said to be an effective countermeasure because it had the disadvantage that it could not be used effectively.
本考案は上記の点に鑑みてなされたものでリー
ド線とは別個に素子を固定する素子挾持体を設け
ることによつて電極からのリード線剥離および接
触不良発生のない湿度センサを提供することを目
的とするものである。 The present invention has been made in view of the above points, and an object of the present invention is to provide a humidity sensor in which lead wires do not come off from electrodes and contact failure does not occur by providing an element holder that fixes the element separately from the lead wires. The purpose is to
以下本考案の一実施例につき図面を参照して説
明する。すなわち第２図に示すように例えばZnO
−V2O5−Li2Oを主成分とした金属酸化物を適正
量秤取しこれをボールミルなどでよく混合し600
〜900℃で焙焼しさらに５％ポリビニルアルコー
ルの水溶液をバインダとして造粒し円板状に成形
する。ついでこの成形体を1000〜1400℃で１〜５
時間焼結しその後研磨して感湿素子１１を形成す
る。つぎに該感湿素子１１の片面または表裏両面
に金ペースト、銀ペーストまたは酸化ルテニウム
ペーストを塗布焼付し電極１２を形成する。しか
して前記感湿素子１１の相対する外周部をステム
１３に一体化した外部端子１４ａ，１４ｂと接続
した第３図に示すように例えばニツケル−コバル
トの合金またはステンレススチールからなり貫通
溝１５を設けた素子挾持体１６一対を用い前記貫
通溝１５部に挾持し固定する。なお１７は周辺鍔
である。そして前記電極１２と前記外部端子１４
ａ，１４ｂ間をリード線１８ａ，１８ｂを介して
接続したのち正面および背面に通気孔部１９を設
けたケース２０に収納し該ケース２０開口内部に
設けた段部２１に前記ステム１３の周辺鍔１７を
当接し開口部を封口樹脂２２で封止してなるもの
である。２３はステム１３内に充填したガラス、
磁器などの絶縁体である。 An embodiment of the present invention will be described below with reference to the drawings. That is, as shown in Figure 2, for example, ZnO
−V 2 O 5 −Weigh out an appropriate amount of metal oxide whose main component is Li 2 O, mix it thoroughly in a ball mill, etc.
It is roasted at ~900°C, then granulated using a 5% polyvinyl alcohol aqueous solution as a binder, and shaped into a disc. Next, this molded body is heated at 1000 to 1400℃ for 1 to 5 minutes.
The moisture sensitive element 11 is formed by sintering for a time and then polishing. Next, gold paste, silver paste, or ruthenium oxide paste is applied and baked on one side or both the front and back surfaces of the moisture-sensitive element 11 to form electrodes 12. As shown in FIG. 3, the opposing outer circumferential parts of the moisture sensing element 11 are connected to external terminals 14a and 14b integrated with the stem 13, and a through groove 15 made of, for example, a nickel-cobalt alloy or stainless steel is provided. It is clamped and fixed in the through groove 15 using a pair of element clamping bodies 16. Note that 17 is the peripheral tsuba. and the electrode 12 and the external terminal 14
After connecting between a and 14b via lead wires 18a and 18b, the stem 13 is housed in a case 20 having ventilation holes 19 on the front and back sides, and a peripheral flange of the stem 13 is inserted into a step 21 provided inside the opening of the case 20. 17 and the opening is sealed with a sealing resin 22. 23 is glass filled in the stem 13;
It is an insulator such as porcelain.
以上のように構成してなる湿度センサはリード
線１８ａ，１８ｂとは別に素子挾持体１６一対に
よつて挾持され、しかも素子支持体１６に設けた
貫通溝１５内に感湿素子１１の相対する外周部が
挿入された形で固定されているため電極１２とリ
ード線１８ａ，１８ｂ部の接続部にほとんどスト
レスがかかることなくこの部分の剥離や亀裂の危
険性は解消され長時間安定した性能を発揮でき
る。またリード線１８ａ，１８ｂは単に電気的導
通を果たすのみであるためきわめて細いものを用
いることを可能にするなどの効果をも有してい
る。 The humidity sensor configured as described above is held by a pair of element holding bodies 16 in addition to the lead wires 18a and 18b, and the humidity sensing element 11 is placed in the through groove 15 provided in the element supporting body 16. Since the outer periphery is inserted and fixed, almost no stress is applied to the connection between the electrode 12 and the lead wires 18a and 18b, eliminating the risk of peeling or cracking in this area and ensuring stable performance for a long time. I can demonstrate it. Furthermore, since the lead wires 18a and 18b merely provide electrical continuity, they also have the effect of allowing the use of extremely thin wires.
つぎに本考案の効果を明らかにするため実験結
果について述べる。すなわち第４図および第５図
は第２図に示す本考案による湿度センサと第１図
に示す従来例による湿度センサの振動試験前と後
における相対湿度−抵抗値の関係を示したもので
ある。なお試料はそれぞれ15個を用いた。しかし
てこの場合の振動試験条件としてはJIS Ｃ 5025
種類Ａ振動数範囲10〜55Hz、全振幅1.5mm、掃引
の割合10−55−10Hz約１分、６時間で、また測定
条件は1V.AC、120Hz、25℃で、湿度槽にそれぞ
れ15分間放置し測定を行つたものである。第４図
および第５図から明らかなように従来例による湿
度センサは試験前B1と比較し試験後B2は抵抗値
が増加すると同時にヒステリシスが大きくなり特
性の低下が著しいのに対して、本考案による湿度
センサは試験前A1と試験後A2の抵抗値およびヒ
ステリシスはほとんど変わらずすぐれた効果を実
証した。なお上記実施例において素子挾持部を外
部端子に直接接続して構造について説明したが第
６図に示すように素子挾持体２４を外部端子２５
ａ，２５ｂに接続せずに独立して外部に引出しア
ースとして使用できるようにしても良い。２６は
感湿素子、２７は電極、２８ａ，２８ｂはリード
線、２８はステム、３０は絶縁体、３１はケー
ス、３２は通気孔、３３は封口樹脂である。また
上記実施例では素子形状として円板状のものを例
示して説明したが角板状のものを用いても同様の
効果を得ることができる。 Next, we will discuss experimental results to clarify the effects of the present invention. That is, FIGS. 4 and 5 show the relative humidity-resistance relationship before and after the vibration test for the humidity sensor according to the present invention shown in FIG. 2 and the conventional humidity sensor shown in FIG. 1. . Note that 15 samples were used for each. However, in this case, the vibration test conditions are JIS C 5025.
Type A: Frequency range: 10-55Hz, total amplitude: 1.5mm, sweep rate: 10-55-10Hz, approximately 1 minute, 6 hours; measurement conditions: 1V.AC, 120Hz, 25℃, 15 minutes each in a humidity chamber. The measurement was carried out after leaving it as it was. As is clear from FIGS. 4 and 5, in the conventional humidity sensor, compared to B1 before the test, B2 after the test increases the resistance value and at the same time increases the hysteresis, resulting in a significant deterioration in characteristics. The humidity sensor according to the present invention demonstrated excellent effectiveness with almost no difference in resistance value and hysteresis between A 1 before the test and A 2 after the test. In the above embodiment, the structure was explained by connecting the element holding part directly to the external terminal, but as shown in FIG.
It may be possible to draw it out to the outside and use it as a ground independently without connecting it to a, 25b. 26 is a moisture sensing element, 27 is an electrode, 28a and 28b are lead wires, 28 is a stem, 30 is an insulator, 31 is a case, 32 is a ventilation hole, and 33 is a sealing resin. Further, in the above embodiments, a disk-shaped element was used as an example of the element shape, but the same effect can be obtained even if a square plate-shaped element is used.
以上述べたように本考案によればリード線とは
別個に素子の固定構造として貫通溝を設けた一対
の素子挾持体を用い前記貫通溝部に素子の相対す
る外周部を挾持固定することによつて電極からの
リード線剥離および接触不良発生による特性の経
時変化の少ない湿度センサを提供できる。 As described above, according to the present invention, a pair of element clamping bodies each having a through groove are used as a fixing structure for the element separately from the lead wire, and the opposing outer periphery of the element is clamped and fixed in the through groove. Accordingly, it is possible to provide a humidity sensor whose characteristics are less likely to change over time due to peeling of lead wires from electrodes or poor contact.
第１図は従来例による湿度センサを示す正断面
図、第２図は本考案の一実施例による湿度センサ
を示す正断面図、第３図は第２図に示す湿度セン
サを構成する素子支持体を示す側面図、第４図お
よび第５図は相対湿度−抵抗値の関係を示す特性
曲線図、第６図は本考案の他の実施例による湿度
センサを示す正断面図である。
１１，２６……感湿素子、１２，２７……電
極、１３，２９……ステム、１４ａ，１４ｂ，２
５ａ，２５ｂ……外部端子、１５……貫通溝、１
６，２４……素子挾持体、１８ａ，１８ｂ，２８
ａ，２８ｂ……リード線、１９，３２……通気孔
部、２０，３１……ケース、２２，３３……封口
樹脂。
FIG. 1 is a front sectional view showing a humidity sensor according to a conventional example, FIG. 2 is a front sectional view showing a humidity sensor according to an embodiment of the present invention, and FIG. 3 is an element support constituting the humidity sensor shown in FIG. 2. 4 and 5 are characteristic curve diagrams showing the relationship between relative humidity and resistance value, and FIG. 6 is a front sectional view showing a humidity sensor according to another embodiment of the present invention. 11, 26... Moisture sensing element, 12, 27... Electrode, 13, 29... Stem, 14a, 14b, 2
5a, 25b...external terminal, 15...through groove, 1
6, 24...Element holding body, 18a, 18b, 28
a, 28b...Lead wire, 19, 32...Vent hole portion, 20, 31...Case, 22, 33...Sealing resin.
Claims (1)
挾持固定した貫通溝を有する一対の素子挾持体
と、該挾持体を固着したステムと、該ステムに
一体化した外部端子と、該外部端子と前記電極
とを接続したリード線と、前記感湿素子を収納
し周辺に通気孔部を設けたケースと、該ケース
開口部を封止した封口樹脂とを具備した湿度セ
ンサ。 (2) 素子挾持体がニツケルとコバルトの合金また
はステンレススチールからなることを特徴とし
た実用新案登録請求の範囲第(1)項記載の湿度セ
ンサ。[Claims for Utility Model Registration] (1) A moisture-sensitive element having an electrode formed on its surface, a pair of element holders having a through groove to which the element is sandwiched and fixed, a stem to which the holder is fixed, and the stem. an external terminal integrated into the body, a lead wire connecting the external terminal and the electrode, a case housing the moisture-sensitive element and having a ventilation hole around it, and a sealing resin sealing the case opening. Humidity sensor equipped with. (2) The humidity sensor according to claim 1, wherein the element holding body is made of a nickel and cobalt alloy or stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4437381U JPS6122284Y2 (en) | 1981-03-27 | 1981-03-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4437381U JPS6122284Y2 (en) | 1981-03-27 | 1981-03-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57156854U JPS57156854U (en) | 1982-10-02 |
| JPS6122284Y2 true JPS6122284Y2 (en) | 1986-07-04 |
Family
ID=29841301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4437381U Expired JPS6122284Y2 (en) | 1981-03-27 | 1981-03-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6122284Y2 (en) |
-
1981
- 1981-03-27 JP JP4437381U patent/JPS6122284Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57156854U (en) | 1982-10-02 |
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