JPH02288126A - Return method of alloy type temperature fuse - Google Patents
Return method of alloy type temperature fuseInfo
- Publication number
- JPH02288126A JPH02288126A JP10979389A JP10979389A JPH02288126A JP H02288126 A JPH02288126 A JP H02288126A JP 10979389 A JP10979389 A JP 10979389A JP 10979389 A JP10979389 A JP 10979389A JP H02288126 A JPH02288126 A JP H02288126A
- Authority
- JP
- Japan
- Prior art keywords
- fuse element
- fuse
- magnetic force
- piece
- alloy type
- 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
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 18
- 239000000956 alloy Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 9
- 239000002184 metal Substances 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000006247 magnetic powder Substances 0.000 claims abstract description 11
- 238000002844 melting Methods 0.000 claims description 20
- 230000008018 melting Effects 0.000 claims description 18
- 230000006698 induction Effects 0.000 abstract description 7
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000004020 conductor Substances 0.000 description 6
- 230000004907 flux Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000020169 heat generation Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 229910000978 Pb alloy Inorganic materials 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 229910000743 fusible alloy Inorganic materials 0.000 description 1
- 229920006015 heat resistant resin Polymers 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は合金型温度ヒユーズの復帰方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for restoring an alloy type temperature fuse.
〈従来の技術〉
合金型温度ヒユーズにおいては、保護すべき電気機器の
許容温度に対応する特定の融点の低融点可溶合金をヒユ
ーズエレメントに用いておす、保護すべき電気機器の発
熱し易い部分に取付けて使用する。而して、電気機器に
過電流が流れて電気機器が発熱し許容温度に達すると温
度ヒユーズのヒユーズエレメントが溶断し、電気機器へ
の通電が遮断されて、電気機器の熱的破壊、延いては火
災の発生を未然に防止できる。<Prior art> In an alloy-type temperature fuse, a low melting point fusible alloy with a specific melting point corresponding to the permissible temperature of the electrical equipment to be protected is used for the fuse element. Use it by installing it on. When an overcurrent flows through the electrical equipment and the electrical equipment generates heat and reaches the allowable temperature, the fuse element of the temperature fuse will melt, cutting off the power to the electrical equipment, resulting in thermal destruction of the electrical equipment and further damage. can prevent fires from occurring.
〈解決しようとする課題〉
ところで、従来の合金型温度ヒユーズにおいては、ヒユ
ーズエレメントが−たん溶断すると元の状態への復帰が
事実上不可能であり、元来、そのような目的を意図して
いない、而して、電気機器については、発熱原因となっ
た部分を修理して再使用しているが、温度ヒユーズにお
いては、新規なものに取替えている。<Problem to be solved> By the way, in conventional alloy-type temperature fuses, once the fuse element melts, it is virtually impossible to return to the original state, and the fuse was originally intended for such a purpose. No, therefore, for electrical equipment, parts that cause heat generation are repaired and reused, but temperature fuses are replaced with new ones.
温度ヒユーズを電気機器に取付ける場合の理想的な場所
的条件は機器の異常時に発熱が最も顕著に発生する箇所
、あるいは熱的に最も弱い箇所であるが、これらの箇所
は往々にして絶縁体で覆われているとか、あるいは、機
器内の深部等であって、温度ヒユーズの取替えが事実上
不可能であることが多い、このため、従来においては、
温度ヒユーズの取替えが、容易で、かつ上記の場所的条
件を可及的に充足し得る箇所に温度ヒユーズを取付けて
いる。The ideal location for installing a thermal fuse in electrical equipment is the location where the most significant heat generation occurs when the equipment malfunctions, or the location where it is the weakest thermally, but these locations are often insulated. In many cases, it is virtually impossible to replace the temperature fuse because it is covered or located deep inside the device.For this reason, conventionally,
The temperature fuse is installed at a location where it can be easily replaced and where the above location conditions can be satisfied as much as possible.
また、近来、機器の多様化により、機器の許容温度も区
々である。而るに、合金型温度ヒユーズの作動温度は低
融点可溶金属の融点により定まり、その融点はＰｂ、Ｓ
Ｈに添加する金属によって規制される。而るに、ある特
定の機器の許容温度に対しては、貴金属添加の歯側な合
金を使用しなければならないことがあり、かかる歯側な
温度ヒユーズを使い捨てとすることは不経済である。Furthermore, due to the recent diversification of equipment, the allowable temperature of the equipment also varies. However, the operating temperature of an alloy type temperature fuse is determined by the melting point of the low melting point fusible metal, and the melting point is Pb, S
It is regulated by the metal added to H. However, depending on the allowable temperature of a particular device, it may be necessary to use a special alloy containing precious metals, and it is uneconomical to make such a special temperature fuse disposable.
上記のように従来の合金型温度ヒユーズにおいては、取
替え使用乃至は使い捨てを前提としているために、取付
は場所の制限、あるいは不経済等の不合理があった。而
るに、合金型温度ヒユーズの作動後、すなわち、ヒユー
ズエレメントの溶断後、ヒユーズエレメントを元の連結
状態に復帰できれば、かかる不合理を解消できる。As mentioned above, since conventional alloy type temperature fuses are intended for replacement or disposable use, installation is unreasonable due to space restrictions or uneconomical considerations. However, if the fuse element can be returned to its original connected state after the alloy type temperature fuse is activated, that is, after the fuse element is blown out, this unreasonableness can be resolved.
本発明の目的は、合金型温度ヒユーズの復帰を容易に行
い得る方法を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for easily resetting an alloy type temperature fuse.
〈課題を解決するための手段〉
本発明に係る合金型温度ヒユーズの復帰方法は、合金型
温度ヒユーズのヒユーズエレメントを磁性粉体入りの低
融点可溶金属によって形成し、ヒユーズエレメントの分
断作動後、その溶断ヒユーズエレメントを外部からの加
熱により変形可能な状態になし、かかる状態下で磁力線
を作用させて分離ヒユーズエレメントを磁力によって連
結することを特徴とする方法である。<Means for Solving the Problems> The method for resetting an alloy type temperature fuse according to the present invention includes forming the fuse element of the alloy type temperature fuse from a low melting point fusible metal containing magnetic powder, and after the fuse element is disconnected. This method is characterized in that the blown fuse element is brought into a deformable state by external heating, and under such a state, lines of magnetic force are applied to connect the separated fuse elements by magnetic force.
〈実施例の説明〉 以下、図面により本発明の実施例について説明する。<Explanation of Examples> Embodiments of the present invention will be described below with reference to the drawings.
第１図は本発明において使用する合金型温度ヒユーズを
示している。FIG. 1 shows an alloy type temperature fuse for use in the present invention.
第１図において、１・ｌは一対のリード導体である。２
はリード導体間に橋設せるヒユーズエレメントとしての
磁性粉体入り低融点可溶金属片であり、５ｎ−Ｐｂ系合
金に鉄系、コバルト系、ニッケル系等の磁性粉末を添加
したものを使用できる。３はヒユーズエレメント上に被
覆せるフラックスである。４はヒユーズエレメント上に
挿通した耐熱性の絶縁筒、５・５は絶縁筒各端と各リー
ド導体との間を封止せる耐熱性の接着剤である。In FIG. 1, 1.l is a pair of lead conductors. 2
is a low melting point fusible metal piece containing magnetic powder as a fuse element installed between lead conductors, and can be made of a 5n-Pb alloy with magnetic powders such as iron, cobalt, and nickel added. . 3 is a flux to be coated on the fuse element. 4 is a heat-resistant insulating tube inserted over the fuse element, and 5 is a heat-resistant adhesive for sealing between each end of the insulating tube and each lead conductor.
６は絶縁筒上に巻付けたヒーターであり、誘導加熱用コ
イル、または通電発熱線を用いることができる。6 is a heater wound around an insulating cylinder, and an induction heating coil or an energized heating wire can be used.
第２図Ａ乃至第２図りにおいて、Ａは上記の合金型温度
ヒユーズを示し、保護すべき電気機器の所定箇所に取付
けである。In FIGS. 2A to 2D, A indicates the above-mentioned alloy type temperature fuse, which is attached to a predetermined location of the electrical equipment to be protected.
第２図Ａは平常時を示し、ヒユーズエレメント２は導通
状態にあり、誘導加熱コイル６は加熱電源から遮断され
ている。FIG. 2A shows a normal state, in which the fuse element 2 is in a conductive state and the induction heating coil 6 is cut off from the heating power source.
保護すべき電気機器が過電流によって発熱し、低融点可
溶金属片の融点に達すると、第２図Ｂに示すように、低
融点可溶金属片が溶融し、その溶融金属の表面張力によ
って球状化分断する（第２図の２０で示す）、この分断
によって電気機器への通電が遮断され、電気機器が常温
に戻り、分断された可溶金属が固定される。When the electrical equipment to be protected generates heat due to overcurrent and reaches the melting point of the low melting point fusible metal piece, the low melting point fusible metal piece melts and the surface tension of the molten metal causes The metal is spheroidized and fragmented (indicated by 20 in FIG. 2), and as a result of this fragmentation, electricity to the electrical equipment is cut off, the electrical equipment returns to room temperature, and the fragmented fusible metal is fixed.
電気機器の発熱原因を検査し、当該機器を補修したのち
は、第２図Ｃに示すように、誘導加熱コイル６を通電し
、分断されて固まった状態のヒユーズエレメント片２０
を誘導加熱して変形可能な状態にし、而るのち、誘導加
熱を停止し、ヒユーズエレメントがまだ軟い間にリード
導体にほぼ平行な方向の磁力線Ｊを作用させて第２図り
に示すようにヒユーズエレメント片を連結させる。After inspecting the cause of heat generation in the electrical equipment and repairing the equipment, as shown in FIG.
is heated by induction to make it deformable, then the induction heating is stopped, and while the fuse element is still soft, the lines of magnetic force J are applied to the lead conductor in a direction almost parallel to it, as shown in the second diagram. Connect the fuse element pieces.
磁力線は、温度ヒユーズ外から磁石を用いて作用させれ
ばよい、この場合、第３図に示すように、リード導体の
端部中心を透磁率の高い金属１０で形成しておけば、リ
ード導体の中心に沿い高密度の磁力線（磁束）を作用さ
せ得る。The lines of magnetic force can be applied using a magnet from outside the temperature fuse. In this case, as shown in FIG. 3, if the center of the end of the lead conductor is made of a metal 10 with high magnetic permeability, High-density lines of magnetic force (magnetic flux) can be applied along the center of the magnetic field.
上記実施例においては、ヒータとして誘導加熱コイルを
使用したが、絶縁筒の外面または内面に膜抵抗を形成し
、この抵抗を通電発熱させるようにしてもよく、また温
度ヒユーズが組こまれている機器あるいは部品自体を加
熱してもよい。In the above embodiment, an induction heating coil was used as the heater, but a membrane resistor may be formed on the outer or inner surface of the insulating tube and the resistor may be energized to generate heat. Also, a temperature fuse may be incorporated. The equipment or components themselves may be heated.
上記合金型温度ヒユーズには、直線型に限定されず各種
の形態のものを使用できる０例えば、第４図に示すよう
に、互いに対向する耐熱性絶縁基板７１・７２の内面に
電極８１・８２を設け、各電極８１・８２にリード導体
１・ｌを接続し、両電極間に磁性粉体入り低融点可溶金
属体２を橋設し、該可溶金属体の周りにフラックス層３
を設け、その周囲を耐熱性樹脂９でモールドすると共に
このモールド体中にヒータ６を埋設したものを使用でき
る。第４図に示す温度ヒユーズを製造するには、フラッ
クス材（例えば、ロジン）を溶融し、これに低融点可溶
金属材（ハンダ）と磁性粉体とを混合し、この混合物か
らブロックを枠型成形し、電極付きの絶縁基板の間にこ
のブロックを挟み、これらを低融点可溶金属の融点より
も高融点の耐熱性絶縁体（例えばエポキシ樹脂）で胴巻
きし、而るのち、絶縁体の融点よりもやや低い温度で全
体を加熱して上記ブロックを溶融させ、この溶融下で上
記磁性粉体を電極間に引寄せる方向の磁束を作用させ、
この磁性粉体と共に溶融状態の低融点金属を電極間に集
中させ、この集中させた溶融金属で電極をぬらして両者
間を電気的に導通させ、而るのち、加熱を停止し上記の
磁束を作用させたままで全体を冷却する方法を使用でき
る。The alloy type temperature fuse is not limited to the linear type, and various types can be used. For example, as shown in FIG. A lead conductor 1/l is connected to each electrode 81/82, a low melting point fusible metal body 2 containing magnetic powder is bridged between the two electrodes, and a flux layer 3 is provided around the fusible metal body.
It is possible to use a device in which the periphery is molded with heat-resistant resin 9 and the heater 6 is embedded in this molded body. To manufacture the temperature fuse shown in Figure 4, a flux material (for example, rosin) is melted, a low melting point fusible metal material (solder) and magnetic powder are mixed with this, and a block is formed from this mixture. This block is sandwiched between insulating substrates with electrodes, then wrapped in a heat-resistant insulator (e.g. epoxy resin) whose melting point is higher than that of the low-melting point fusible metal, and then the insulator is The block is heated as a whole at a temperature slightly lower than the melting point of the block to melt it, and under this melting, a magnetic flux is applied in a direction to draw the magnetic powder between the electrodes,
Together with this magnetic powder, molten low-melting metal is concentrated between the electrodes, and the concentrated molten metal wets the electrodes to create electrical continuity between them. Afterwards, heating is stopped and the magnetic flux is reduced. A method of cooling the entire body while it is still working can be used.
〈発明の効果〉
本発明に係る合金型温度ヒユーズの復帰方法は、上述し
た通り、温度ヒユーズの作動後、すなわちヒユーズエレ
メントの溶断後、ヒユーズエレメントをヒータにより加
熱し、次いで、磁力線を作用させることによって分断ヒ
ユーズエレメントを再連結する方法であり、磁石によっ
て磁力線を作用させ得る限り、温度ヒユーズの取付は位
置に拘束されない。従っＣ，温度ヒユーズを所望の位置
に取付は得る。また、低融点可溶金属に高価なものを使
用しても、復帰により再使用が可能であるから、経済的
に有利である。<Effects of the Invention> As described above, the method for returning the alloy type temperature fuse according to the present invention is to heat the fuse element with a heater after the temperature fuse is activated, that is, after the fuse element is blown out, and then apply magnetic lines of force to the fuse element. This is a method of reconnecting the separated fuse elements by using a magnet, and the installation of the temperature fuse is not restricted by the position as long as the magnetic lines of force can be applied by the magnet. Therefore, the temperature fuse can be installed in the desired position. Furthermore, even if an expensive low melting point fusible metal is used, it can be reused by restoration, which is economically advantageous.
第１図は本発明において使用する合金型温度ヒユーズを
示す説明図、第２図Ａ、第２図Ｂ、第２図Ｃ並びに第２
図りはそれぞれ本発明におけるヒユーズエレメントの溶
断前、溶断後、復婦時加熱時並びに復帰後を示す説明図
、第３図並びに第４図はそれぞれ本発明において使用す
る合金型温度ヒユーズの別個を示す説明図である。
２・・・・・・磁性粉体入りの低融点可溶金属片、６・
・・・・・ヒータ、 Ｊ・・・・・・磁力線。Fig. 1 is an explanatory diagram showing an alloy type temperature fuse used in the present invention, Fig. 2 A, Fig. 2 B, Fig. 2 C, and Fig. 2
The diagrams are explanatory diagrams showing the fuse element before blowing out, after blowing out, during heating during retiring, and after recovery, respectively, and FIGS. 3 and 4 respectively show separate alloy type temperature fuses used in the present invention. It is an explanatory diagram. 2...Low melting point fusible metal piece containing magnetic powder, 6.
...Heater, J...Magnetic field lines.
Claims (1)
りの低融点可溶金属によって形成し、ヒューズエレメン
トの分断作動後、その溶断ヒューズエレメントを外部か
らの加熱により変形可能な状態になし、かかる状態下で
磁力線を作用させて分離ヒューズエレメントを磁力によ
って連結することを特徴とする合金型温度ヒューズの復
帰方法。The fuse element of the alloy type thermal fuse is formed of a low melting point fusible metal containing magnetic powder, and after the fuse element is cut off, the blown fuse element is made deformable by external heating, and under such conditions A method for restoring an alloy type thermal fuse, characterized by connecting separated fuse elements by magnetic force by applying lines of magnetic force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1109793A JPH07109745B2 (en) | 1989-04-28 | 1989-04-28 | How to reset the alloy type thermal fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1109793A JPH07109745B2 (en) | 1989-04-28 | 1989-04-28 | How to reset the alloy type thermal fuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02288126A true JPH02288126A (en) | 1990-11-28 |
| JPH07109745B2 JPH07109745B2 (en) | 1995-11-22 |
Family
ID=14519364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1109793A Ceased JPH07109745B2 (en) | 1989-04-28 | 1989-04-28 | How to reset the alloy type thermal fuse |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07109745B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6445277B1 (en) * | 1999-06-22 | 2002-09-03 | Yazaki Corporation | Safety device of electric circuit and process for producing the same |
| US6566995B2 (en) * | 2000-05-17 | 2003-05-20 | Sony Chemicals Corporation | Protective element |
| US20100109833A1 (en) * | 2007-03-26 | 2010-05-06 | Robert Bosch Gmbh | Thermal fuse |
-
1989
- 1989-04-28 JP JP1109793A patent/JPH07109745B2/en not_active Ceased
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6445277B1 (en) * | 1999-06-22 | 2002-09-03 | Yazaki Corporation | Safety device of electric circuit and process for producing the same |
| US6566995B2 (en) * | 2000-05-17 | 2003-05-20 | Sony Chemicals Corporation | Protective element |
| US20100109833A1 (en) * | 2007-03-26 | 2010-05-06 | Robert Bosch Gmbh | Thermal fuse |
| US8633795B2 (en) * | 2007-03-26 | 2014-01-21 | Robert Bosch Gmbh | Thermal fuse |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07109745B2 (en) | 1995-11-22 |
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