JPH0313693B2 - - Google Patents
Info
- Publication number
- JPH0313693B2 JPH0313693B2 JP58056269A JP5626983A JPH0313693B2 JP H0313693 B2 JPH0313693 B2 JP H0313693B2 JP 58056269 A JP58056269 A JP 58056269A JP 5626983 A JP5626983 A JP 5626983A JP H0313693 B2 JPH0313693 B2 JP H0313693B2
- Authority
- JP
- Japan
- Prior art keywords
- lead wire
- fuse
- temperature
- coil spring
- lead wires
- 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 - Lifetime
Links
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 37
- 229910045601 alloy Inorganic materials 0.000 claims description 21
- 239000000956 alloy Substances 0.000 claims description 21
- 239000000155 melt Substances 0.000 claims description 6
- 241001285221 Breviceps Species 0.000 claims 1
- 230000007257 malfunction Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- -1 ferrous metals Chemical class 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
- H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Fuses (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は電流容量、溶断温度が高い性能をもつ
温度ヒユーズに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a temperature fuse that has high current capacity and high fusing temperature.
従来200℃以上の高温タイプの温度ヒユーズと
しては感温部に有機物を用いたものと、非鉄金属
を用いたものの２種類がある。前者は高温による
感温物質の分解や劣化、体積の減少などによる誤
動作を防ぐため、密封した金属ケースに収納し、
容器の一端のみ樹脂によつてシールを施している
が、周囲温度が200℃−常温のサイクル的連続使
用によつて構成部品の材質の熱膨張収縮率の差異
による密封性の破壊が生じる。
Conventionally, there are two types of high-temperature fuses with temperatures above 200°C: those using organic materials for the temperature sensing part and those using non-ferrous metals. The former is housed in a sealed metal case to prevent malfunctions due to decomposition and deterioration of the temperature-sensitive material and volume reduction due to high temperatures.
Although only one end of the container is sealed with resin, the sealing performance is destroyed due to the difference in thermal expansion and contraction coefficients of the materials of the component parts due to continuous use in cycles at ambient temperatures of 200°C and room temperature.
この密封性の破壊により温度ヒユーズは正常な
設定値での動作を行わず、誤作動が生じることと
なる。また後者の感温部に非鉄金属を用いたもの
は耐候性や気密性において技術的に問題視するこ
とはないが、感温部としてのヒユーズ合金の使用
量が多いため合金の比抵抗が高く設定負荷流値よ
りも低い値で溶断し、構造的に問題がある。また
従来の高温タイプの温度ヒユーズとしては250℃
が限界であつた。
Due to this destruction of the sealing property, the temperature fuse does not operate at the normal set value, resulting in malfunction. In addition, the latter, which uses non-ferrous metals for the temperature-sensing part, does not pose any technical problems in terms of weather resistance or airtightness, but because a large amount of fuse alloy is used in the temperature-sensing part, the resistivity of the alloy is high. It melts at a value lower than the set load flow value, causing a structural problem. In addition, the conventional high temperature type temperature fuse is 250℃.
was the limit.
また特開昭57−121119号公報に開示されたもの
は圧縮されたコイルスプリングの弾発力と、これ
と反対側に設置した形状記憶合金の復元性とを利
用して対向するリード線間に架橋した接続子とを
強制的に移動させてリード線間を離開せしめるよ
うになしている。これはコイルばねと形状記憶合
金の双方を要し、構造が複雑となり、かつ高価な
材質を用いるため製品もコスト高となる。 In addition, the method disclosed in Japanese Patent Application Laid-Open No. 57-121119 utilizes the elastic force of a compressed coil spring and the restorability of a shape memory alloy installed on the opposite side to connect opposing lead wires. The bridged connector is forcibly moved to separate the lead wires. This requires both a coil spring and a shape memory alloy, resulting in a complex structure and the use of expensive materials, resulting in a high product cost.
本発明はこれに鑑みて構造が簡易で、電流容量
が15〜20A、電圧250Vと高く、又250℃〜300℃
の溶断温度で正確に作動する温度ヒユーズを提供
することを目的とする。 In view of this, the present invention has a simple structure, a high current capacity of 15 to 20A, a high voltage of 250V, and a temperature range of 250℃ to 300℃.
The purpose of the present invention is to provide a temperature fuse that operates accurately at a fusing temperature of .
本発明は上記目的を達成するためになしたもの
で、長短２種の頭付つば付リード線を所要間隔を
おいて対向設置し、この対向する２つのリード線
間に筒状のエレメントを嵌合して架橋し、更にエ
レメントの両端面と各リード線のエレメントを嵌
合する接触面とを予め設定した温度で溶解し、か
つリード線より固有抵抗の高いヒユーズ合金にて
溶着し、この一方のリード線とエレメントの端部
に緊張したコイルスプリングの端部を夫々係止し
てコイルスプリングを緊張状態にて架設し、周囲
温度の上昇によりヒユーズ合金の溶解によつてエ
レメントがコイルスプリングによつてこのコイル
スプリングを係止したリード線側に移動し、係方
のリード線端とエレメントが離開して回路が開放
されることを要旨とする。
The present invention has been made to achieve the above object, and consists of two types of long and short lead wires with heads and flanges that are installed facing each other at a required interval, and a cylindrical element is fitted between the two facing lead wires. Then, both end surfaces of the element and the contact surfaces of each lead wire where the elements fit are melted at a preset temperature and welded with a fuse alloy that has a higher specific resistance than the lead wire. The end of the tensioned coil spring is secured to the lead wire of the lead wire and the end of the element, and the coil spring is installed under tension, and as the ambient temperature rises, the fuse alloy melts and the element becomes energized by the coil spring. The gist is that the coil spring is moved to the locked lead wire side, and the engaged lead wire end and element are separated and the circuit is opened.
以下本発明を図示の実施例にもとづいて説明す
る。
The present invention will be explained below based on the illustrated embodiments.
図において１，２はその先端が互いに対向する
ように配設したるリード線で、該リード線端間を
所望の絶縁間隔もしくはそれ以上とし、且つリー
ド線端部の外周につばもしくは突起１ａ，２ａを
設ける。この場合一方のリード線１の鍔１ａはリ
ード線先端面より少しの距離を有せしめ、この鍔
１ａより先端側の頭部１ｂに後述する筒状のエレ
メント３を嵌挿できるように、また他方のリード
線２の鍔２ａより先端側の頭部２ｂは前述の頭部
１ｂより短いものとする。 In the figure, 1 and 2 are lead wires arranged so that their tips face each other, and the ends of the lead wires are provided with a desired insulation interval or more, and a collar or protrusion 1a is provided on the outer periphery of the end of the lead wire. 2a is provided. In this case, the flange 1a of one of the lead wires 1 is placed a little distance from the tip end surface of the lead wire so that a cylindrical element 3, which will be described later, can be inserted into the head 1b on the distal end side of the flange 1a. The head 2b of the lead wire 2 on the distal side of the collar 2a is shorter than the aforementioned head 1b.
また対向するリード線１，２の端部間には筒状
で導電性のエレメント３を嵌合して架橋すると共
に、このエレメント３の一端側をリード線１の頭
部１ｂに、他端側をリード線２の頭部２ｂに夫々
ヒユーズ合金４，５にて溶着せしめる。このヒユ
ーズ合金４，５は同じ設定温度で溶融するように
なしたものが使用されるが、リード線２側ではエ
レメント端が鍔２ａと近接しているので溶着され
るヒユーズ合金５の使用量は少量であるがリード
線１側ではエレメント端と鍔１ａ間に長い距離を
有し、この頭部１ｂの全外周面を被覆するように
なすため上記ヒユーズ合金４の使用量は多量とな
る。 Moreover, a cylindrical conductive element 3 is fitted between the ends of the opposing lead wires 1 and 2 to form a bridge, and one end of this element 3 is connected to the head 1b of the lead wire 1, and the other end is connected to the head 1b of the lead wire 1. are welded to the head 2b of the lead wire 2 with fuse alloys 4 and 5, respectively. These fuse alloys 4 and 5 are made to melt at the same set temperature, but since the element end is close to the flange 2a on the lead wire 2 side, the amount of fuse alloy 5 to be welded is limited. Although the amount of the fuse alloy 4 is small, since there is a long distance between the element end and the flange 1a on the lead wire 1 side, and the entire outer peripheral surface of the head 1b is covered, the amount of fuse alloy 4 used is large.
またエレメント３と一方のリード線１側との間
にはコイルスプリング６が架設される。これはコ
イルスプリング６の一端をリード線の鍔１ａに引
掛け、他端をエレメント３の一部に掛けるが、こ
れは第１図の如くエレメント３のリード線２側端
外周に突設した突起（又は鍔）３ａに引掛けるこ
とも、あるいはコイルスプリング先端を円錐形の
先細状とし、この先細部６ａをエレメント端に掛
けるようにしてもよい。このいずれにしてもコイ
ルスプリング６はリード線１，２間に架橋された
エレメントとリード線１とにおいて引張された状
態で係着支持されるようになすが、このコイルス
プリング６の引張力にては溶融前のヒユーズ合金
による溶着力を破壊しない程度とする。このよう
に対向した２本のリード線間にコイルスプリング
の作用下にてエレメントを架橋し、且つエレメン
ト両端を夫々設定温度にて溶解するようになした
ヒユーズ合金をもつて各リード線に溶着したもの
をその外周を覆うようにしてケース７を設ける。
即ちケース７内に上記エレメント及びリード線端
部を収縮せしめると共にケースの開口部にはセラ
ミツク製、その他耐熱、絶縁性の材質にて成型し
た蓋８を設け、一方のリード線２はこの蓋８を貫
通し、他方のリード線１はケース底部を貫通した
夫々リード線１，２はケース外へ導き出されるよ
うになし、さらにケース内の気密性を保持するた
め、リード線の貫通孔部に高温シール材９が設け
られる。 Further, a coil spring 6 is installed between the element 3 and one lead wire 1 side. This is done by hooking one end of the coil spring 6 to the collar 1a of the lead wire, and hooking the other end to a part of the element 3, which is connected to a protrusion protruding from the outer periphery of the lead wire 2 side end of the element 3, as shown in Fig. 1. (or collar) 3a, or the tip of the coil spring may be tapered into a conical shape, and this tapered portion 6a may be hung on the end of the element. In either case, the coil spring 6 is supported in a tensioned state between the element bridged between the lead wires 1 and 2 and the lead wire 1. shall be at a level that does not destroy the welding force of the fuse alloy before melting. An element was bridged between the two opposing lead wires under the action of a coil spring, and a fuse alloy was melted at each end of the element at a set temperature and welded to each lead wire. A case 7 is provided to cover the outer periphery of the object.
That is, the element and the end of the lead wire are shrunk in the case 7, and a lid 8 made of ceramic or other heat-resistant and insulating material is provided at the opening of the case, and one lead wire 2 is inserted into the lid 8. The lead wires 1 and 2 pass through the bottom of the case, and the other lead wire 1 passes through the bottom of the case.The lead wires 1 and 2 are guided out of the case.Furthermore, in order to maintain airtightness inside the case, the through hole of the lead wire is heated to a high temperature. A sealing material 9 is provided.
しかして、述の如く構成したる高温タイプの温
度ヒユーズを民生用電気機械器具その他の電気器
具の電気回路に従来の温度ヒユーズと同様に接続
して使用し、予め設定された負荷電流値例えば15
〜20Aよりも大なる電流値に達すると発生するジ
ユール熱がヒユーズ合金の溶断温度以上となり、
又は周囲温度が設定されたヒユーズ合金の溶断温
度に達するとエレメントを介して２本のリード線
１，２間に形成されている電気回路において、ヒ
ユーズ合金４，５が溶解する。この時、使用量の
少ないリード線２側が先にあるいはリード線１側
と同時に溶解してコイルスプリングの引張力にて
リード線１側の合金が溶解するとエレメントはリ
ード線１側に急峻に移動せしめられ、第２図の如
くなつて電気回路を開放せしめるものである。 Therefore, the high-temperature type temperature fuse constructed as described above can be used by connecting it to the electrical circuit of a consumer electric appliance or other electrical appliance in the same manner as a conventional temperature fuse, and can be used at a preset load current value of, for example, 15.
When a current value greater than ~20A is reached, the generated Joule heat exceeds the melting temperature of the fuse alloy, and
Alternatively, when the ambient temperature reaches the set melting temperature of the fuse alloy, the fuse alloys 4 and 5 melt in the electric circuit formed between the two lead wires 1 and 2 via the element. At this time, the lead wire 2 side, which is used in a small amount, melts first or at the same time as the lead wire 1 side, and when the alloy on the lead wire 1 side melts due to the tensile force of the coil spring, the element moves steeply to the lead wire 1 side. This opens the electrical circuit as shown in Figure 2.
しかして、本発明によるときは、ケースの両端
部に互いに対向して挿入されるリード線の先端に
頭付鍔を設け、この互いに対向するリード線端間
にエレメントを嵌合して架橋し、このエレメント
の両端部を各リード線に設定温度にて溶解するヒ
ユーズ合金にて溶着する際、固有抵抗の高いヒユ
ーズ合金の使用を抵抗の低いリード線とエレメン
トの嵌合接触に必要最少量に限定しているので小
型で高い負荷特性がとれるようになり、またエレ
メントを応力のかかつたコイルスプリングにて一
方のリード線側に引張するようにして架橋されて
いるため、このコイルスプリングによる誤作動を
防止し、且つエレメントとリード線との係合を行
うヒユーズ合金の使用量を一方では少量に、他方
を溶着面積を大となるよう多量に使用しているの
で温度ヒユーズの作動が正確で且つ確実に行え、
しかも少ない部品数で組み立てられ、安価に精度
の高い高温タイプの温度ヒユーズが提供できる。
さらに、リード線につばを設けているので、ケー
ス内圧が上昇したり、あるいはケース外の機械的
圧力によつてリード線が引かれた場合でも、リー
ド線のケース外への飛び出しを防止し、かつ温度
ヒユーズ自体の破壊を未然に防止できる利点があ
る。
Therefore, according to the present invention, a headed collar is provided at the tip of the lead wires that are inserted into both ends of the case so as to face each other, and an element is fitted between the ends of the lead wires that face each other to form a bridge. When welding both ends of this element to each lead wire with a fuse alloy that melts at a set temperature, use of the high resistivity fuse alloy is limited to the minimum amount necessary for fitting contact between the low resistance lead wire and the element. This makes it possible to achieve high load characteristics with a small size, and since the element is bridged by a stressed coil spring that pulls it toward one lead wire, it prevents malfunctions caused by this coil spring. On the one hand, a small amount of fuse alloy is used to prevent and engage the element and lead wire, and on the other hand, a large amount is used to increase the welding area, so the operation of the temperature fuse is accurate and reliable. Go to
Moreover, it can be assembled with a small number of parts, and a high-temperature type temperature fuse with high accuracy can be provided at low cost.
Furthermore, since the lead wire is provided with a flange, even if the internal pressure of the case increases or the lead wire is pulled by mechanical pressure outside the case, the lead wire will be prevented from jumping out of the case. Moreover, there is an advantage that the temperature fuse itself can be prevented from being destroyed.
第１図は本発明温度ヒユーズの縦断面図、第２
図は溶断時の説明図、第３図はコイルスプリング
の異なりたる係止法を示す説明図である。
１，２はリード線、１ａ，２ａは鍔又は突起、
１ｂ，２ｂは頭部、３はエレメント、３ａは突起
（鍔）、４，５はヒユーズ合金、６はコイルスプリ
ング、７はケース、８は蓋、９は高温シール剤。
Figure 1 is a longitudinal sectional view of the temperature fuse of the present invention, Figure 2 is a longitudinal cross-sectional view of the temperature fuse of the present invention;
The figure is an explanatory diagram at the time of fusing, and FIG. 3 is an explanatory diagram showing different locking methods of the coil spring. 1 and 2 are lead wires, 1a and 2a are collars or protrusions,
1b and 2b are heads, 3 is an element, 3a is a protrusion (flange), 4 and 5 are fuse alloys, 6 is a coil spring, 7 is a case, 8 is a lid, and 9 is a high temperature sealant.
Claims (1)
つば付リード線を所要間隔をおいて対向設置し、
この対向する２つのリード線間に筒状のエレメン
トを嵌合して架橋し、更にエレメントの両端面と
各リード線のエレメントを嵌合する接触面とを予
め設定した温度で溶解し、かつリード線より固有
抵抗の高いヒユーズ合金にて溶着し、この一方の
リード線とエレメントの端部に緊張したコイルス
プリングの端部を夫々係止してコイルスプリング
を緊張状態にて架設し、周囲温度の上昇によりヒ
ユーズ合金の溶解によつてエレメントがコイルス
プリングによつてこのコイルスプリングを係止し
たリード線側に移動し、他方のリード線端とエレ
メントが離開して回路が開放されることを特徴と
する温度ヒユーズ。1. Two types of lead wires with long and short heads with brims inserted into both ends of the case are installed facing each other at the required interval,
A cylindrical element is fitted between these two opposing lead wires to form a bridge, and both end surfaces of the element and the contact surfaces where the elements of each lead wire are fitted are melted at a preset temperature, and the A fuse alloy with a higher specific resistance than the wire is welded, and the end of the coil spring under tension is secured to one of the lead wires and the end of the element, respectively, and the coil spring is installed under tension. As the fuse alloy melts as it rises, the element moves toward the lead wire that is locked by the coil spring, and the other lead wire end and the element separate, opening the circuit. temperature fuse.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5626983A JPS59180924A (en) | 1983-03-30 | 1983-03-30 | Temperature fuse |
| EP83201358A EP0121005A1 (en) | 1983-03-30 | 1983-09-23 | Thermal fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5626983A JPS59180924A (en) | 1983-03-30 | 1983-03-30 | Temperature fuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59180924A JPS59180924A (en) | 1984-10-15 |
| JPH0313693B2 true JPH0313693B2 (en) | 1991-02-25 |
Family
ID=13022363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5626983A Granted JPS59180924A (en) | 1983-03-30 | 1983-03-30 | Temperature fuse |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0121005A1 (en) |
| JP (1) | JPS59180924A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06272831A (en) * | 1993-03-16 | 1994-09-27 | Eiko Ono | Incinerating melting furnace |
| DE4424821C2 (en) * | 1994-03-18 | 1996-02-01 | Inter Control Koehler Hermann | Thermal fuse |
| WO1995026035A1 (en) * | 1994-03-18 | 1995-09-28 | Inter Control Hermann Köhler Elektrik GmbH & Co. KG | Double temperature fuse |
| DE19528100C2 (en) * | 1995-08-01 | 1998-03-26 | Inter Control Koehler Hermann | Thermal fuse |
| US5982270A (en) * | 1998-12-03 | 1999-11-09 | Shop Vac Corporation | Thermal fuse |
| DE102018126560B4 (en) * | 2018-10-24 | 2021-05-12 | Günther Spelsberg GmbH & Co. KG | Electrical connection device with fuse element and associated method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57121119A (en) * | 1981-01-19 | 1982-07-28 | Matsushita Electric Ind Co Ltd | Temperature fuse |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1557911A (en) * | 1976-04-15 | 1979-12-19 | Matsushita Electric Ind Co Ltd | Tamperature responsive current interrupter |
| US4356469A (en) * | 1980-11-20 | 1982-10-26 | Hilliard Dozier | Electrical terminal with thermal interrupter |
| US4383236A (en) * | 1981-12-28 | 1983-05-10 | Mcgraw-Edison Company | Heat limiters and method of manufacture |
-
1983
- 1983-03-30 JP JP5626983A patent/JPS59180924A/en active Granted
- 1983-09-23 EP EP83201358A patent/EP0121005A1/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57121119A (en) * | 1981-01-19 | 1982-07-28 | Matsushita Electric Ind Co Ltd | Temperature fuse |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59180924A (en) | 1984-10-15 |
| EP0121005A1 (en) | 1984-10-10 |
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