JPS639974Y2 - - Google Patents
Info
- Publication number
- JPS639974Y2 JPS639974Y2 JP1983086503U JP8650383U JPS639974Y2 JP S639974 Y2 JPS639974 Y2 JP S639974Y2 JP 1983086503 U JP1983086503 U JP 1983086503U JP 8650383 U JP8650383 U JP 8650383U JP S639974 Y2 JPS639974 Y2 JP S639974Y2
- Authority
- JP
- Japan
- Prior art keywords
- metal
- wire
- metal wire
- fusible
- tube
- 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
- 229910052751 metal Inorganic materials 0.000 claims description 63
- 239000002184 metal Substances 0.000 claims description 63
- 239000012212 insulator Substances 0.000 claims description 17
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 10
- 239000011810 insulating material Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910001293 incoloy Inorganic materials 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
Landscapes
- Fuses (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は、高温度条件下で使用される機器およ
び装置、例えば内燃機関の触媒コンバータなどの
内部の異常温度検知に適用される高温度ヒユーズ
に関するものである。[Detailed Description of the Invention] Industrial Application Field The present invention relates to a high temperature fuse that is applied to detect abnormal temperatures inside equipment and devices used under high temperature conditions, such as catalytic converters of internal combustion engines. It is.
従来例の構成とその問題点
第１図に示すように従来の高温度ヒユーズはパ
イプ形状の可溶金属管１に金属リード線２ａ，２
ｂを溶接固着し、空間部３を形成し、金属リード
線２ａの先端を金属保護管４に接地した後、粉末
状電気絶縁材５を充填し、前記金属保護管４を減
径し開口部を封口材６で完全密封して成るもので
あつた。Structure of the conventional example and its problems As shown in Fig. 1, the conventional high temperature fuse has a pipe-shaped fusible metal tube 1 and metal lead wires 2a, 2.
b is welded and fixed to form a space 3, and the tip of the metal lead wire 2a is grounded to the metal protection tube 4. After that, a powdered electrical insulating material 5 is filled, and the diameter of the metal protection tube 4 is reduced to form an opening. It was completely sealed with a sealing material 6.
この高温度ヒユーズは可溶金属管の溶断を行な
うものであるが、内燃機関のように高温でしかも
常に昇温・降温による膨張・収縮が繰返されるよ
うなものに使用した場合、金属保護管に接地した
金属リード線を有する可溶金属線が金属保護管内
外の温度差による引張り・圧縮応力で可溶金属管
が断線する恐れがあつた。 This high-temperature fuse is used to blow out fusible metal pipes, but when used in high-temperature products such as internal combustion engines, which constantly expand and contract due to temperature rises and falls, the metal protection pipe may be damaged. There was a risk that the fusible metal pipe with the grounded metal lead wire would break due to tensile and compressive stress caused by the temperature difference inside and outside the metal protection tube.
考案の目的
本考案は高温で常に振動が加わる箇所で、しか
も周囲温度が昇温・降温を繰返すような使用条件
下でも耐振性および機械的強度を保持できる高温
度ヒユーズを提供するものである。Purpose of the invention The present invention provides a high-temperature fuse that can maintain vibration resistance and mechanical strength even in locations where vibration is constantly applied at high temperatures and under usage conditions where the ambient temperature repeatedly rises and falls.
考案の構成
本考案はコイル形状の可溶金属線と、前記可溶
金属線の両端に接続される一対の金属リード線
と、前記可溶金属線を包囲するその可溶金属線の
体積より大きい内容積の空間部を有し、かつ一端
に前記金属リード線の一方を外部に導出するため
の貫通孔を有する断面コ字状をした絶縁碍子管
と、前記絶縁碍子管及び前記金属リード線とを粉
末状絶縁材を介して収納する金属保護管を有し、
一方の前記金属リード線は前記絶縁碍子管の前記
貫通孔に挿入され前記空間部への前記粉末状絶縁
材の侵入を遮断するとともに前記金属保護管と電
気的に絶縁されて外部に導出され、他方の前記金
属リード線が前記金属保護管に電気的に接続され
てなる高温度ヒユーズである。従つて、本考案で
は金属保護管と接地した絶縁碍子管に保護された
コイル形状の可溶金属線は、常に振動が加わり、
しかも膨張・収縮が繰返される苛酷な使用条件下
でも、絶縁碍子管のコイル形状の可溶金属線が状
況に応じて伸縮自在であるため、金属保護管の内
外の温度差による引張り・圧縮応力の影響もなく
長時間の高温耐久にも満足できる。Composition of the Invention The present invention includes a coil-shaped fusible metal wire, a pair of metal lead wires connected to both ends of the fusible metal wire, and a volume larger than the fusible metal wire surrounding the fusible metal wire. an insulator tube having a U-shaped cross section and having a space with an internal volume and a through hole at one end for leading one of the metal lead wires to the outside; the insulator tube and the metal lead wire; It has a metal protection tube that houses it through powdered insulation material,
One of the metal lead wires is inserted into the through hole of the insulator tube to block the intrusion of the powdered insulating material into the space, and is electrically insulated from the metal protection tube and guided to the outside; The other metal lead wire is a high temperature fuse that is electrically connected to the metal protection tube. Therefore, in the present invention, the coil-shaped fusible metal wire protected by the metal protection tube and the grounded insulator tube is constantly subjected to vibrations.
Moreover, even under harsh usage conditions where expansion and contraction are repeated, the coil-shaped fusible metal wire of the insulator tube can expand and contract according to the situation, so the tensile and compressive stress caused by temperature differences inside and outside the metal protection tube is reduced. Satisfied with long-term high-temperature durability without any adverse effects.
実施例の説明
第２図は本考案に係る高温度ヒユーズの断面図
である。同図において、第１図と同一番号は同一
部分を示す。金属保護管４は例えばステンレス・
インコロイ・インコネル材などから成る。７はコ
イル形状をした可溶金属線で、貴金属はもとより
銀ろう、パラジウムろうなどの一般ろう材および
これらの合金を用いる。金属リード線２ａ，２ｂ
はステンレス・ニツケル・ニクロム線などから成
り、コイル形状の可溶金属線７と所定の位置で、
プラズマ溶接およびスポツト溶接などで溶接固着
されている。８はコイル形状をした可溶金属線７
と金属リード線２ａ，２ｂを溶接固着した後の空
間部である。９はコイル形状の可溶金属線７部分
を保護した絶縁碍子管であり、酸化マグネシアお
よびムライト・アルミナ焼結体などから成り、第
３図に示すような断面コ字状の形状を有する。こ
の絶縁碍子管９は前記可溶金属線７の体積より大
きい内容積を形成する空間部を有し、その内面は
鏡面状態に近い仕上げ状態となつている。また、
この絶縁碍子管９は一端に金属リード線２ｂを外
部に導出するための貫通孔を有しており、その金
属リード線２ｂが前記貫通孔に挿入されて外部に
導出されることにより、前記絶縁碍子管９の前記
空間部への前記粉末状絶縁材５の侵入を遮断する
働きを有している。封口材６は耐熱性に優れたエ
ポキシ樹脂およびガラス質固着材から成り、酸素
や湿気の侵入を阻止し可溶金属線７の酸化防止を
行なつている。DESCRIPTION OF THE EMBODIMENTS FIG. 2 is a sectional view of a high temperature fuse according to the present invention. In this figure, the same numbers as in FIG. 1 indicate the same parts. The metal protection tube 4 is made of stainless steel, for example.
Made of incoloy, inconel, etc. 7 is a coil-shaped fusible metal wire, which uses not only noble metals but also general brazing materials such as silver solder and palladium solder, and alloys thereof. Metal lead wires 2a, 2b
is made of stainless steel, nickel, nichrome wire, etc., and is connected to the coil-shaped fusible metal wire 7 at a predetermined position.
It is fixed by plasma welding, spot welding, etc. 8 is a coil-shaped fusible metal wire 7
This is the space after the metal lead wires 2a and 2b are welded and fixed. Reference numeral 9 designates an insulator tube that protects the coil-shaped fusible metal wire 7 portion, and is made of magnesia oxide, sintered mullite/alumina, etc., and has a U-shaped cross section as shown in FIG. This insulator tube 9 has a space forming an internal volume larger than the volume of the fusible metal wire 7, and its inner surface has a nearly mirror-like finish. Also,
This insulator tube 9 has a through hole at one end for leading out the metal lead wire 2b, and when the metal lead wire 2b is inserted into the through hole and led out, the insulator It has the function of blocking the intrusion of the powdered insulating material 5 into the space of the insulator tube 9. The sealing material 6 is made of an epoxy resin and a glass adhesive material with excellent heat resistance, and prevents the intrusion of oxygen and moisture to prevent the fusible metal wire 7 from oxidizing.
第４図は異常温度上昇によりコイル形状の可溶
金属線７はオープン状態となり、金属リード線２
ａ，２ｂ間の電気導通を遮断した状態を示してい
る。 Figure 4 shows that due to an abnormal temperature rise, the coil-shaped fusible metal wire 7 becomes open, and the metal lead wire 2
This shows a state in which electrical continuity between a and 2b is interrupted.
考案の効果
本考案は、昇温・降温による膨張・収縮の繰返
しの条件下においても、金属保護管内に接地した
絶縁碍子管に保護されたコイル形状の可溶金属線
の伸縮自在により金属保護管の内外の温度差で生
ずる引張り・圧縮応力による可溶金属線の断線も
なく、長時間の高温耐久にも耐え、しかも異常温
度に上昇の際、所定の温度で可溶金属線をその可
溶金属線の体積より大きい内容積の空間部と前記
可溶金属線と電気的に接続して成る金属リード線
の挿入により粉末状絶縁材の前記空間部への侵入
を遮断する貫通孔とを有する絶縁碍子管の内容積
部分に溶融させ、可溶金属線を構成する材料の表
面張力により確実に溶断させて開回路化させるこ
とができる。この時、前記実施例で述べたように
絶縁碍子管の内面を鏡面状態に近い仕上げ状態と
しておくことにより、可溶金属線の溶融時の溶断
性を一段と向上させることができる。また可溶金
属線がコイル形状であるため、作業性も容易なう
えコスト面でも非常に効果がある。Effects of the invention This invention enables the metal protection tube to expand and contract even under conditions of repeated expansion and contraction due to temperature rise and fall, by making the coil-shaped fusible metal wire protected by the grounded insulator tube inside the metal protection tube expandable. There is no breakage of the fusible metal wire due to tensile or compressive stress caused by the temperature difference between the inside and outside of the pipe. It has a space having an internal volume larger than the volume of the metal wire, and a through hole that blocks the intrusion of powdered insulating material into the space by inserting a metal lead wire electrically connected to the fusible metal wire. The melt can be melted into the inner volume of the insulator tube, and the surface tension of the material constituting the fusible metal wire can reliably melt the metal wire to create an open circuit. At this time, as described in the above embodiment, by finishing the inner surface of the insulator tube in a nearly mirror-like finish, it is possible to further improve the cutting performance when the fusible metal wire is melted. Furthermore, since the fusible metal wire is in a coil shape, it is easy to work with and is very cost effective.
第１図は従来例を示す部分断面図、第２図は本
考案の実施例を示す高温度ヒユーズの部分断面
図、第３図は絶縁碍子管の断面図、第４図は本考
案に係るヒユーズの溶断後の部分断面図である。
２ａ，２ｂ……金属リード線、５……粉末状電
気絶縁材、７……コイル形状の可溶金属線、９…
…絶縁碍子管。
Fig. 1 is a partial cross-sectional view showing a conventional example, Fig. 2 is a partial cross-sectional view of a high temperature fuse showing an embodiment of the present invention, Fig. 3 is a cross-sectional view of an insulator tube, and Fig. 4 is a partial cross-sectional view of a high temperature fuse showing an embodiment of the present invention. FIG. 6 is a partial cross-sectional view of the fuse after it is blown. 2a, 2b...metal lead wire, 5...powdered electrical insulating material, 7...coil-shaped fusible metal wire, 9...
...Insulator tube.
Claims (1)
両端に接続される一対の金属リード線と、前記可
溶金属線を包囲するその可溶金属線の体積より大
きい内容積の空間部を有し、かつ一端に前記金属
リード線の一方を外部に導出するための貫通孔を
有する断面コ字状をした絶縁碍子管と、前記絶縁
碍子管及び前記金属リード線とを粉末状絶縁材を
介して収納する金属保護管を有し、一方の前記金
属リード線は前記絶縁碍子管の前記貫通孔に挿入
され前記空間部への前記粉末状絶縁材の侵入を遮
断するとともに前記金属保護管と電気的に絶縁さ
れて外部に導出され、他方の前記金属リード線が
前記金属保護管に電気的に接続されてなる高温度
ヒユーズ。 A coil-shaped fusible metal wire, a pair of metal lead wires connected to both ends of the fusible metal wire, and a space surrounding the fusible metal wire and having an internal volume larger than the volume of the fusible metal wire. an insulator tube having a U-shaped cross section and having a through hole at one end for leading one of the metal lead wires to the outside; one of the metal lead wires is inserted into the through hole of the insulator tube to block the intrusion of the powdered insulating material into the space, and the metal protection tube and the metal protection tube. A high-temperature fuse that is electrically insulated and led outside, and the other metal lead wire is electrically connected to the metal protection tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8650383U JPS59190052U (en) | 1983-06-06 | 1983-06-06 | high temperature fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8650383U JPS59190052U (en) | 1983-06-06 | 1983-06-06 | high temperature fuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59190052U JPS59190052U (en) | 1984-12-17 |
| JPS639974Y2 true JPS639974Y2 (en) | 1988-03-24 |
Family
ID=30216431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8650383U Granted JPS59190052U (en) | 1983-06-06 | 1983-06-06 | high temperature fuse |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59190052U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4947867A (en) * | 1972-09-14 | 1974-05-09 |
-
1983
- 1983-06-06 JP JP8650383U patent/JPS59190052U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4947867A (en) * | 1972-09-14 | 1974-05-09 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59190052U (en) | 1984-12-17 |
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