JPS61160030A - Temperature sensor - Google Patents

Temperature sensor

Info

Publication number
JPS61160030A
JPS61160030A JP183685A JP183685A JPS61160030A JP S61160030 A JPS61160030 A JP S61160030A JP 183685 A JP183685 A JP 183685A JP 183685 A JP183685 A JP 183685A JP S61160030 A JPS61160030 A JP S61160030A
Authority
JP
Japan
Prior art keywords
lead
resistor
temperature sensor
nickel
sensing element
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
Application number
JP183685A
Other languages
Japanese (ja)
Other versions
JPH0332006B2 (en
Inventor
Atsushi Kato
敦之 加藤
Yoshihiro Wada
善博 和田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP183685A priority Critical patent/JPS61160030A/en
Publication of JPS61160030A publication Critical patent/JPS61160030A/en
Publication of JPH0332006B2 publication Critical patent/JPH0332006B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/22Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor

Abstract

PURPOSE:To enhance productivity while reducing manufacturing cost, by respectively connecting metallic leads to the electrodes opposed to a temp. sensitive element and connecting adjustable standard resistors to one of the leads and a third lead to form a three-lead structure. CONSTITUTION:A temp. sensitive element 6 comprises oxide of manganese, cobalt or nickel and electrodes comprising silver or silver-palladium are provided to two opposed surfaces. Each of lead frames 11, 11, 11 is formed of a thin plate comprising nickel, a copper-nickel alloy or an iron nickel alloy and copper or solder plating is applied to the surface of each lead frame. The element 6 is connected between the frames 11(a), 11(b). A thick film resistor 12 based on lithium oxide coming to a standard resistor is fixed to the frame 11(b) having the element 6 connected thereto and the remaining frame 11(c) by soldering. The resistance value of the element 6 at use temp. is measured and the resistor 12 is adjusted so as to be equal to said resistance value. By this method, productivity can be enhanced and manufacturing cost can be reduced.

Description

【発明の詳細な説明】 く技術分野〉 本発明は、体温計、空調機器、冷蔵庫、ソーラー機器、
あるいは複写機その他機器のヒータ一温度制御等に使用
される温度センサーに関するものである。
[Detailed Description of the Invention] Technical Field> The present invention is applicable to thermometers, air conditioning equipment, refrigerators, solar equipment,
Alternatively, the present invention relates to a temperature sensor used for controlling the temperature of a heater in a copying machine or other equipment.

〈従来技術〉 第3図の電子体温計の構造を例にとって、従来例を説明
する。第3図で、Iは温度センサー、2は集積回路装置
3等を搭載した本体回路基板、4は電池等の駆動電源、
5は測定基準抵抗体となるトリマー抵抗器である。
<Prior Art> A conventional example will be explained by taking the structure of an electronic thermometer shown in FIG. 3 as an example. In Fig. 3, I is a temperature sensor, 2 is a main circuit board on which an integrated circuit device 3, etc. is mounted, 4 is a driving power source such as a battery,
5 is a trimmer resistor serving as a measurement reference resistor.

第4図に温度センサ一部の詳細を示す。6はマンガン、
コバルト、ニッケル等の酸化物を主成分とする焼結体か
らなる感温素子で、1辺1mm程度の六面体であり、対
向する2面に銀または銀・パラジウム電極が形成され、
この電極にはリード線7.7が半田付けあるいはウェル
ディングで接合されている。リード線7.7は直径0.
5瓢程度の銅線または銅・ニッケル線である。感温素子
6及び本体回路基板2との連結部を除く外面は、8で示
される絶縁材で被覆されている。絶縁材8としてはエポ
キシ樹脂、ビニール樹脂等である。
FIG. 4 shows details of a part of the temperature sensor. 6 is manganese,
It is a temperature-sensitive element made of a sintered body mainly composed of oxides such as cobalt and nickel, and it is a hexahedron with a side of about 1 mm, and silver or silver/palladium electrodes are formed on two opposing sides.
A lead wire 7.7 is connected to this electrode by soldering or welding. Lead wire 7.7 has a diameter of 0.
It is a copper wire or a copper-nickel wire of about 5 liters. The outer surface of the thermosensor 6 except for the connecting portion with the main body circuit board 2 is covered with an insulating material 8 . The insulating material 8 is made of epoxy resin, vinyl resin, or the like.

このような温度センサ一部(第3図では符号1で示され
る)が、本体回路基板2に接続されて後、その生産段階
で、検温精度の向上を図るため、体温計の場合は、温度
センサーlを37℃の恒温槽に入れ、温度表示が37℃
となるようにあらかじめトリマー抵抗器5が調整される
After a part of such a temperature sensor (indicated by reference numeral 1 in FIG. 3) is connected to the main body circuit board 2, in the production stage, in order to improve temperature measurement accuracy, in the case of a thermometer, the temperature sensor is I put it in a thermostat at 37℃, and the temperature display shows 37℃.
The trimmer resistor 5 is adjusted in advance so that.

すなわち、第4図に示した感温素子6は、温度に対して
抵抗特性が非線形であり、例えば感温素子lとトリマー
抵抗器5によって2つOCR発振器を構成し、これらの
発振周波数の比較をベースにして温度表示がなされるが
、感温素子6の抵抗バラツキが大きいため、それぞれの
温度センサーIごとに基準抵抗値を調整しなければなら
ない。
That is, the temperature sensing element 6 shown in FIG. 4 has a nonlinear resistance characteristic with respect to temperature. For example, two OCR oscillators are configured by the temperature sensing element 1 and the trimmer resistor 5, and their oscillation frequencies are compared. The temperature is displayed based on the temperature sensor I, but since the resistance variation of the temperature sensing element 6 is large, the reference resistance value must be adjusted for each temperature sensor I.

しかし、この調整作業は長時間を要し、また調整ミスも
多く、生産工程のネックとなっていた。
However, this adjustment work took a long time, and there were many adjustment errors, which became a bottleneck in the production process.

さらに、トリマー抵抗器5は第3図の本体回路基板2に
搭載された構造をとっているため、調整工程は、温度セ
ンサー1を本体回路基板2に連結したほぼ完成状態で実
施することになる。従って、第4図の感温素子6の抵抗
バラツキがトリマー抵抗器5の可変域を越える場合、あ
るいは感温素子6そのものが何らかの理由で不良であっ
た場合、調整時完成品状態であるため、温度センサーl
のみの不良交換を行なうことができず、無2駄が多かつ
た0 〈発明の目的〉 本発明は、上述の問題点に鑑みて、感温素子とその電極
に連結した2本のリード部からなる温度センサーに、抵
抗調整を行なった標準抵抗体を含む1つの回路を併設す
ることにより、生産性の向上と生産コストを低減した、
標準抵抗体回路を含む新規な温度センサーを提供するこ
とを目的とする。
Furthermore, since the trimmer resistor 5 has a structure mounted on the main body circuit board 2 as shown in FIG. 3, the adjustment process is carried out with the temperature sensor 1 connected to the main body circuit board 2 in an almost completed state. . Therefore, if the resistance variation of the temperature sensing element 6 shown in FIG. temperature sensor l
Object of the Invention In view of the above-mentioned problems, the present invention provides a thermosensitive element and two lead parts connected to its electrodes. By adding a single circuit that includes a standard resistor with resistance adjustment to a temperature sensor consisting of
The object is to provide a novel temperature sensor including a standard resistor circuit.

本発明では、感温素子の対向した2つの電極に、それぞ
れ金属製リードを連結した構造を有する温度センサーに
おいて、1つのリードに、酸化ルチウムをベースとする
厚膜抵抗体等を接続して3リード構造のものとし、抵抗
体はサンドブラストあるいはレーザートリミングにより
調整する。抵抗体の抵抗値は、所定温度において温度セ
ンサーが示す抵抗値と等しくなるように調整すればよい
In the present invention, in a temperature sensor having a structure in which metal leads are connected to two opposing electrodes of a temperature sensing element, a thick film resistor based on rutium oxide or the like is connected to one lead. It has a lead structure, and the resistor is adjusted by sandblasting or laser trimming. The resistance value of the resistor may be adjusted to be equal to the resistance value indicated by the temperature sensor at a predetermined temperature.

この調整においては、電子体温計等の完成状態時の本体
回路基板や集積回路装置の影響がほとんど認められず、
上記のような直接的な調整で充分可能である。
In this adjustment, there is almost no influence of the main body circuit board or integrated circuit device in the completed state of the electronic thermometer, etc.
Direct adjustment as described above is sufficient.

リードは従来例にも記載している所定直径のリード線が
使用できるoしかし最も好ましいのは、ニッケル、銅・
ニッケル合金または鉄・ニッケル合金の薄板から、エツ
チングまたは金型によるプレス成形で製作したリードフ
レームを使用することである。
As for the lead, a lead wire with a predetermined diameter as described in the conventional example can be used.However, the most preferable lead wire is nickel, copper,
This method uses a lead frame made from a thin plate of nickel alloy or iron-nickel alloy by etching or press forming using a die.

〈実施例〉 以下第1図、第2図に従って、リードフレームを使用し
たものについて説明する0 第1図において、6は前記と同様のマンガン。
<Example> Hereinafter, an example using a lead frame will be described according to FIGS. 1 and 2. In FIG. 1, 6 is manganese as described above.

コバルト、ニッケル等の酸化物からなる感温素子で、対
向する2面には銀または銀・パラジウムからなる電極を
有している。11.11.IIは、ニッケル、銅・ニッ
ケル合金または鉄・二・シケル合金の薄板から、エツチ
ングまたは金型によるプレス成形で製作したリードフレ
ームであり、表面は銅または半田メッキを行なっている
。このリードフレームは電気伝導性が良好で、逆に熱伝
導性は低い。このうちの2本のリードフレームI I 
(a)、 l I (b)間に、感温素子6を半田付け
またはウェルディングにより接合する。
It is a temperature-sensitive element made of oxides such as cobalt and nickel, and has electrodes made of silver or silver/palladium on two opposing sides. 11.11. II is a lead frame manufactured from a thin plate of nickel, copper/nickel alloy, or iron/nickel alloy by etching or press forming using a die, and the surface is plated with copper or solder. This lead frame has good electrical conductivity and, conversely, low thermal conductivity. Two of these lead frames II
The temperature sensing element 6 is joined between (a) and l I (b) by soldering or welding.

12は標準抵抗体となる酸化ルチウムをベースとする厚
膜抵抗体(ここでは角チツプ抵抗器の形態をとっている
)であり、感温素子6を接合した!本のリードフレーム
+ r (b)と残りのリードフレームl l (c)
に半田付は固定される。この酸化ルチウム系の厚膜抵抗
体12は、サンドブラストトリミングあるいはレーザー
トリミングのいずれでもその抵抗値を調整することが可
能である。8は、感温素子6とその周辺のリード部を覆
って絶縁処理する、エポキシ樹脂等からなる絶縁材であ
る。
Reference numeral 12 denotes a thick film resistor (here, in the form of a square chip resistor) based on rutium oxide, which serves as a standard resistor, and a temperature-sensitive element 6 is bonded to it! Book lead frame + r (b) and remaining lead frame l l (c)
The soldering is fixed. The resistance value of the rutium oxide thick film resistor 12 can be adjusted by either sandblasting trimming or laser trimming. Reference numeral 8 denotes an insulating material made of epoxy resin or the like, which covers and insulates the temperature sensing element 6 and its surrounding lead portions.

ちなみに、感温素子6の外形寸法は0.9X0.9XO
13雪で、厚膜抵抗体■2の外形寸法は3.2X1.6
(×厚さ約0.6)閣である。また、リードフレームI
 I (a) 、 I I (b)中の感温素子6を取
付けたリード部の各々の断面積はQ、5n+m2以下で
、感温素子6から30mRの範囲内で上記断面積の区間
を少なくとも5瓢以上有する方が、測定スピード向上に
効果的である。
By the way, the external dimensions of the temperature sensing element 6 are 0.9X0.9XO.
13 Snow, the external dimensions of thick film resistor ■2 are 3.2X1.6
(x thickness approx. 0.6). Also, lead frame I
The cross-sectional area of each lead part to which the temperature sensing element 6 is attached in I (a) and I I (b) is Q, 5n+m2 or less, and the area of the above cross-sectional area is at least within a range of 30 mR from the temperature sensing element 6. Having 5 or more gourds is more effective in improving measurement speed.

以上のような構成で、感温素子6の部分を、例えば体温
計の場合は37℃の恒温槽に入れ、37℃のときの感温
素子6の抵抗値を測定する。そして、次にこの抵抗値と
等しくなるように、厚膜抵抗体12をサンドブラストあ
るいはレーザートリミングにより調整する。
With the above configuration, for example, in the case of a thermometer, the temperature sensing element 6 is placed in a constant temperature bath at 37°C, and the resistance value of the temperature sensing element 6 at 37°C is measured. Then, the thick film resistor 12 is adjusted by sandblasting or laser trimming so that the resistance value is equal to this value.

このように本案による温度センサーは、本体回路基板か
ら切り離した状態で、単独で調整・検査をすることが可
能となり、不良センサーの組み込みを防止するとともに
、サンドトリミングまたはレーザートリミングを採用す
ることによって、従来のボリューム調整に比べ、調整ス
ピードを一段と向上させることができる。
In this way, the temperature sensor according to the present invention can be adjusted and inspected independently when separated from the main circuit board, preventing the installation of defective sensors, and by adopting sand trimming or laser trimming. Compared to conventional volume adjustment, the adjustment speed can be further improved.

なお、リードフレームの使用は、次に説明するように、
生産コストの−/L(7)低減が可能であるという利点
を有し、有用である。第2図にその例を示す。
Note that when using a lead frame, as explained below,
It is useful because it has the advantage that production costs can be reduced by -/L(7). An example is shown in FIG.

リードフレームI+、+1.・・・は、位置決め用基準
穴+3.13.・・・を設けた主幹■4に、本体回路基
板への連結側の3端子を櫛歯状に多数連結し、他方、感
温素子の取り付は側は、先端までのところでフレーム変
形を避けるため、タイバー■5を主幹14と並行して形
成している。タイバー15にも、主幹14中の基準穴+
3.13.・・ と位置相関した位置決め用基準穴16
.16を設けることにより、感温素子6あるいは厚膜抵
抗体12のリードフレーム搭載を機械化することが容易
になり、生産コストの一層の低減が実現できる。第2図
において、Aが第1図感温素子6の取り付は部、Bが同
厚膜抵抗体I2の取り付は部である。
Lead frame I+, +1. ... is the reference hole for positioning +3.13. Connect many 3 terminals connected to the main body circuit board in a comb-like shape to the main body ■4 provided with... On the other hand, on the side where the temperature sensing element is attached, avoid frame deformation up to the tip. Therefore, the tie bar 5 is formed in parallel with the main stem 14. Tie bar 15 also has a reference hole in main stem 14 +
3.13. Positioning reference hole 16 whose position is correlated with...
.. By providing 16, it becomes easy to mechanize the mounting of the temperature sensing element 6 or the thick film resistor 12 on the lead frame, and further reduction in production cost can be realized. In FIG. 2, A is the mounting part of the temperature sensing element 6 shown in FIG. 1, and B is the mounting part of the same thick film resistor I2.

以上実施例では、標準抵抗体として酸化ルチウム系の厚
膜抵抗体を用いたが、リード線あるいはリードフレーム
に取り付けが簡単であって、また抵抗値の調整がサンド
ブラストトリミングやレーザートリミング等のように容
易に実行できるものであれば、他の類似のものも使用で
きる。
In the above examples, a rutium oxide thick film resistor was used as the standard resistor, but it is easy to attach to a lead wire or lead frame, and the resistance value can be adjusted by sandblasting trimming, laser trimming, etc. Other similar implementations may also be used, provided they are easily implemented.

〈発明の効果〉 以上のように本発明によれば、317−ド構造で、調整
される標準抵抗体を含む1つの回路を併設しているもの
であり、生産性の向上と生産コストを低減し、またそれ
を機器に組み込む際にも不良センサーを防止できる、有
用な温度センサーを提供する。
<Effects of the Invention> As described above, according to the present invention, the 317-cord structure is equipped with one circuit including a standard resistor to be adjusted, improving productivity and reducing production costs. To provide a useful temperature sensor that can also prevent defective sensors when incorporating it into equipment.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の一実施例を示す構成図、第2図はリー
ドフレームの形成例を示す図、第3図は従来例を示す電
子体温計の構成図、第4図は従来の温度センサ一部を示
す斜視構成図である。 6・・・感温素子、11・・・リードフレーム、+2・
・・酸化ルチウム系の厚膜抵抗体。 代理人 弁理士 福 士 愛 彦(他2名)萬l 図 1fJ2  図
Fig. 1 is a block diagram showing an embodiment of the present invention, Fig. 2 is a diagram showing an example of lead frame formation, Fig. 3 is a block diagram of a conventional electronic thermometer, and Fig. 4 is a conventional temperature sensor. FIG. 6... Temperature sensing element, 11... Lead frame, +2.
...Rutium oxide-based thick film resistor. Agent Patent attorney Aihiko Fuku (and 2 others) Figure 1fJ2 Figure

Claims (1)

【特許請求の範囲】 1、感温素子の対向した2つの電極にそれぞれ第1、第
2金属性リードを連結するとともに、該リードの1つと
第3のリードに調整可能な標準抵抗体を接続し、前記感
温素子と前記標準抵抗体を同時に含む3リード構造とし
てなることを特徴とする温度センサー。 2、前記標準抵抗体は酸化ルチニウム系の厚膜抵抗体か
らなることを特徴とする特許請求の範囲第1項記載の温
度センサー。
[Claims] 1. First and second metal leads are connected to two opposing electrodes of the temperature sensing element, respectively, and an adjustable standard resistor is connected to one of the leads and a third lead. A temperature sensor characterized in that it has a three-lead structure including the temperature sensing element and the standard resistor at the same time. 2. The temperature sensor according to claim 1, wherein the standard resistor is a rutinium oxide thick film resistor.
JP183685A 1985-01-08 1985-01-08 Temperature sensor Granted JPS61160030A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP183685A JPS61160030A (en) 1985-01-08 1985-01-08 Temperature sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP183685A JPS61160030A (en) 1985-01-08 1985-01-08 Temperature sensor

Publications (2)

Publication Number Publication Date
JPS61160030A true JPS61160030A (en) 1986-07-19
JPH0332006B2 JPH0332006B2 (en) 1991-05-09

Family

ID=11512639

Family Applications (1)

Application Number Title Priority Date Filing Date
JP183685A Granted JPS61160030A (en) 1985-01-08 1985-01-08 Temperature sensor

Country Status (1)

Country Link
JP (1) JPS61160030A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63205530A (en) * 1987-02-20 1988-08-25 Ishizuka Denshi Kk Temperature sensor
EP0309664A2 (en) * 1987-09-28 1989-04-05 Ranco Incorporated Of Delaware Temperature sensing apparatus and method of making same
CN104807553A (en) * 2015-04-08 2015-07-29 宁波奥崎仪表成套设备有限公司 Self-diagnosis thermocouple

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63205530A (en) * 1987-02-20 1988-08-25 Ishizuka Denshi Kk Temperature sensor
EP0309664A2 (en) * 1987-09-28 1989-04-05 Ranco Incorporated Of Delaware Temperature sensing apparatus and method of making same
CN104807553A (en) * 2015-04-08 2015-07-29 宁波奥崎仪表成套设备有限公司 Self-diagnosis thermocouple

Also Published As

Publication number Publication date
JPH0332006B2 (en) 1991-05-09

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