JPH0238404Y2 - - Google Patents
Info
- Publication number
- JPH0238404Y2 JPH0238404Y2 JP2405584U JP2405584U JPH0238404Y2 JP H0238404 Y2 JPH0238404 Y2 JP H0238404Y2 JP 2405584 U JP2405584 U JP 2405584U JP 2405584 U JP2405584 U JP 2405584U JP H0238404 Y2 JPH0238404 Y2 JP H0238404Y2
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- temperature fuse
- tubular body
- membrane
- heat
- 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
- 239000012528 membrane Substances 0.000 claims description 15
- 239000000919 ceramic Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000001035 drying Methods 0.000 description 3
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910000743 fusible alloy Inorganic materials 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- SWELZOZIOHGSPA-UHFFFAOYSA-N palladium silver Chemical compound [Pd].[Ag] SWELZOZIOHGSPA-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Apparatuses And Processes For Manufacturing Resistors (AREA)
- Fuses (AREA)
Description
【考案の詳細な説明】
本考案は抵抗温度ヒユーズの改良に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a resistance temperature fuse.
抵抗温度ヒユーズにおいては、抵抗体に温度ヒ
ユーズを近接して設けてあり、その機能は、過電
流によつて抵抗体が発熱すると、その発熱温度で
温度ヒユーズを作動させ、回路電流の通電遮断に
よつて回路の過熱防止或は、抵抗体を保護するこ
とにある。 In the case of a resistance temperature fuse, the temperature fuse is installed close to the resistor, and its function is that when the resistor heats up due to overcurrent, the temperature of the heat generated activates the temperature fuse to cut off the circuit current. Therefore, the purpose is to prevent overheating of the circuit or protect the resistor.
従来、抵抗温度ヒユーズとして、第１図に示す
ように、セラミツクス管状体１′の表面に膜抵抗
２′を設けた抵抗体R′の管内部に温度ヒユーズ
３′を挿入せるものが公知である。 Conventionally, as shown in FIG. 1, there is a known resistance temperature fuse in which a temperature fuse 3' is inserted into the tube of a resistor R' in which a membrane resistor 2' is provided on the surface of a ceramic tubular body 1'. .
この抵抗温度ヒユーズにおいては、セラミツク
スが比較的熱導伝性に秀れ、かつ比熱が大である
ためにセラミツクス管状体が熱的コンデンサとし
て作用する。しかし、瞬間的熱発生に対し膜抵抗
の片面のみがこの熱的コンデンサに対する熱伝達
面として作用するだけであり（膜抵抗の表面は空
気に接しており、瞬間的な熱発生に対しては放熱
面としてほとんど作用しない）、セラミツクス管
状体を熱的コンデンサーとして有効に利用し難
く、瞬間的過電流による膜抵抗の瞬間的的熱発生
時に、膜抵抗温度が異常に高温となつて膜抵抗が
溶融し易いといつた不具合がある。 In this resistance temperature fuse, the ceramic tubular body acts as a thermal condenser because ceramics have relatively excellent thermal conductivity and high specific heat. However, in response to instantaneous heat generation, only one side of the membrane resistor acts as a heat transfer surface for this thermal capacitor (the surface of the membrane resistor is in contact with air, It is difficult to use the ceramic tubular body effectively as a thermal capacitor, and when instantaneous heat is generated in the membrane resistor due to an instantaneous overcurrent, the membrane resistance temperature becomes abnormally high and the membrane resistor melts. There is a problem that is said to be easy to do.
本考案に係る抵抗温度ヒユーズは上述の不利を
解消し得る構成であり、耐熱性無機質管状体の管
壁内に膜抵抗をスパイラル状に埋設せる抵抗体の
管内部に温度ヒユーズを収納したことを特徴とす
るものである。 The resistance-temperature fuse according to the present invention has a structure that can eliminate the above-mentioned disadvantages, and the temperature fuse is housed inside the tube of a resistor in which a membrane resistor is embedded in a spiral shape in the tube wall of a heat-resistant inorganic tubular body. This is a characteristic feature.
以下、図面により本考案を説明する。 The present invention will be explained below with reference to the drawings.
第２図Ａは本考案に係る抵抗温度ヒユーズを示
す縦断面説明図、第２図Ｂは第２図Ａにおけるｂ
−ｂ断面説明図である。 FIG. 2A is a vertical cross-sectional explanatory diagram showing the resistance temperature fuse according to the present invention, and FIG. 2B is b in FIG. 2A.
-b cross-sectional explanatory diagram.
第２図Ａ並びに第２図Ｂにおいて、Ｒは抵抗体
であり、耐熱性無機質管状体１の管壁内に膜抵抗
２をスパイラル状に埋設してある。３，３はリー
ド線接続用電極、４，４はリード線である。Ｔは
抵抗体Ｒの管内に挿入せる温度ヒユーズであり、
リード線５，５を可溶合金６で接続し、その外周
に樹脂またはフラツクス７を塗布してある。８，
８は抵抗体Ｒの管両端を封止せる樹脂（エポキシ
系接着剤）である。 In FIGS. 2A and 2B, R is a resistor, and a membrane resistor 2 is embedded in the tube wall of the heat-resistant inorganic tubular body 1 in a spiral shape. 3, 3 are electrodes for connecting lead wires, and 4, 4 are lead wires. T is a temperature fuse that can be inserted into the tube of the resistor R,
Lead wires 5, 5 are connected with a fusible alloy 6, and resin or flux 7 is applied to the outer periphery of the lead wires 5, 5. 8,
8 is a resin (epoxy adhesive) for sealing both ends of the tube of the resistor R.
上記抵抗体は次のようにして製作できる。 The above resistor can be manufactured as follows.
すなわち、アルミナ粉末（約200メツシユ、フ
リツト５％を含有）にCMCを２％添加して撹拌、
混合し、適量の水を加えて練り合せてこれをシー
ト状に成形し、乾燥後（60℃で２時間）、シート
を一定寸法に切断し、次いで第３図Ａに示すよう
に、切断シート１１に導電ペースト（銀−パラジ
ウム系）の印刷によつてリード線接続用電極３，
３を形成し（電極３，３は第３図Ｂに示すように
裏面にまわり込むように形成する）、導電ペース
トを乾燥後（50℃で１時間乾燥）、スクリーン印
刷機で抵抗ペースト（酸化ルテニウム系）により
膜抵抗２１を印刷し、更に乾燥し（50℃で１時間
乾燥）、次いで、この印刷シートを第３図ｃに示
すように管状に巻回し、この管状体を200℃で１
時間前加熱したのち700℃で１時間焼結加熱する。 That is, 2% CMC was added to alumina powder (approximately 200 meshes, containing 5% frit) and stirred.
Mix, add an appropriate amount of water, knead, form this into a sheet, dry (2 hours at 60°C), cut the sheet into a certain size, and then cut the sheet as shown in Figure 3A. Electrode 3 for connecting lead wires is printed on 11 with conductive paste (silver-palladium type).
3 (electrodes 3 and 3 are formed so as to wrap around the back side as shown in Figure 3B), and after drying the conductive paste (drying at 50°C for 1 hour), use a screen printer to print the resistive paste (oxidized). A membrane resistor 21 is printed with a ruthenium-based material (ruthenium-based), dried (drying at 50°C for 1 hour), then this printed sheet is wound into a tubular shape as shown in Figure 3c, and the tubular body is heated at 200°C for 1 hour.
After preheating for an hour, sintering is heated at 700℃ for 1 hour.
本考案に係る抵抗温度ヒユーズにおいては、上
述した通り、セラミツクス管状体の管壁内に膜抵
抗をスパイラル状に埋設して、膜抵抗の全面をセ
ラミツクス管状体に接触させてあるから、発熱体
としての膜抵抗とセラミツクス管状体との接触面
積を極めて大きくでき、セラミツクス管状体を熱
的コンデンサーとして有効に利用できる。従つ
て、既述した膜抵抗の瞬時の温度上昇を充分に緩
和できる。 In the resistance temperature fuse according to the present invention, as mentioned above, the membrane resistor is embedded in the tube wall of the ceramic tubular body in a spiral shape, and the entire surface of the membrane resistor is in contact with the ceramic tubular body, so that it can be used as a heating element. The contact area between the membrane resistor and the ceramic tubular body can be made extremely large, and the ceramic tubular body can be effectively used as a thermal condenser. Therefore, the instantaneous temperature rise of the membrane resistance described above can be sufficiently alleviated.
第１図は従来の抵抗温度ヒユーズを示す説明
図、第２図Ａは本考案に係る抵抗温度ヒユーズを
示す説明図、第２図Ｂは第２図Ａにおけるｂ−ｂ
断面説明図、第３図Ａ、第３図Ｂ並びに第３図Ｃ
は本考案において使用せる抵抗体の製造方法を示
す説明図である。
図において、１は耐熱性無機質管状体、２は膜
抵抗、Ｒは抵抗体、Ｔは温度ヒユーズである。
Fig. 1 is an explanatory diagram showing a conventional resistance temperature fuse, Fig. 2A is an explanatory diagram showing a resistance temperature fuse according to the present invention, and Fig. 2B is a line bb in Fig. 2A.
Cross-sectional explanatory diagrams, Figure 3A, Figure 3B, and Figure 3C
FIG. 2 is an explanatory diagram showing a method of manufacturing a resistor used in the present invention. In the figure, 1 is a heat-resistant inorganic tubular body, 2 is a membrane resistor, R is a resistor, and T is a temperature fuse.
Claims (1)
ラル状に埋設せる抵抗体の管内部に温度ヒユーズ
を収納したことを特徴とする抵抗温度ヒユーズ。 A resistance temperature fuse is characterized in that a temperature fuse is housed inside a tube of a resistor in which a membrane resistor is embedded in a spiral shape within the tube wall of a heat-resistant inorganic tubular body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2405584U JPS60136036U (en) | 1984-02-21 | 1984-02-21 | resistance temperature fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2405584U JPS60136036U (en) | 1984-02-21 | 1984-02-21 | resistance temperature fuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60136036U JPS60136036U (en) | 1985-09-10 |
| JPH0238404Y2 true JPH0238404Y2 (en) | 1990-10-17 |
Family
ID=30517853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2405584U Granted JPS60136036U (en) | 1984-02-21 | 1984-02-21 | resistance temperature fuse |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60136036U (en) |
-
1984
- 1984-02-21 JP JP2405584U patent/JPS60136036U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60136036U (en) | 1985-09-10 |
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