JPS635162Y2 - - Google Patents
Info
- Publication number
- JPS635162Y2 JPS635162Y2 JP8356981U JP8356981U JPS635162Y2 JP S635162 Y2 JPS635162 Y2 JP S635162Y2 JP 8356981 U JP8356981 U JP 8356981U JP 8356981 U JP8356981 U JP 8356981U JP S635162 Y2 JPS635162 Y2 JP S635162Y2
- Authority
- JP
- Japan
- Prior art keywords
- winding core
- insulating
- tube
- terminal fitting
- insulating 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
- 238000004804 winding Methods 0.000 claims description 43
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 239000000956 alloy Substances 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 9
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052878 cordierite Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Fuses (AREA)
Description
【考案の詳細な説明】
本考案は銀線部と低融点合金部とを直列に接続
しさらにその低融点合金部の周りに消弧チユーブ
を被せたヒユーズエレメントを巻芯に対しスパイ
ラルに巻いて絶縁筒に密閉収納し、その収納した
エレメントの両端を絶縁筒の上下両端の上下部両
電極にそれぞれ接続し、さらに筒内の絶縁空間に
は消弧剤を充填した全領域形高圧カツトアウト用
限流ヒユーズの改良に係り、特に遮断時に形成さ
れる高抵抗物質の接触に起因する絶縁筒の偏熱破
壊事故を極力なくすように工夫した安全性の高い
構造に関するものである。[Detailed description of the invention] This invention connects a silver wire part and a low melting point alloy part in series, and furthermore, a fuse element is spirally wound around a winding core with an arc extinguishing tube covered around the low melting point alloy part. The element is hermetically stored in an insulating cylinder, and both ends of the stored element are connected to the upper and lower electrodes at the upper and lower ends of the insulating cylinder, respectively, and the insulating space inside the cylinder is filled with an arc extinguisher for full-area high-voltage cut-out use. The present invention relates to improvements in flow fuses, and in particular to a highly safe structure devised to eliminate as much as possible the accident of uneven heat breakdown of an insulating tube caused by contact with a high-resistance substance formed during shutoff.
高圧配電線路の一次側あるいは電力コンデンサ
ーには保護機器として限流ヒユーズ（筒）が使用
されている。 Current-limiting fuses are used as protective devices on the primary side of high-voltage distribution lines or power capacitors.
この場合、他の保護機器との保護協調および安
全上の理由から銀線部と低融点合金部とを直列に
接続しその低融点合金部の周りにハロゲン化合物
よりなる消弧チユーブを被せたヒユーズエレメン
トを巻芯に対しスパイラルに捲回して同巻芯を絶
縁筒に密閉収納しさらせに収納したエレメントの
両端を絶縁筒の両端に固着して備えた上下部両電
極にそれぞれ接続しさらに筒内の絶縁空間には消
弧剤を密に充填した構造からなる全領域形高圧カ
ツトアウト用限流ヒユーズが使用されている。 In this case, for protection coordination with other protective equipment and safety reasons, a fuse is used in which a silver wire part and a low melting point alloy part are connected in series, and an arc extinguishing tube made of a halogen compound is placed around the low melting point alloy part. The element is spirally wound around the winding core, and the winding core is hermetically stored in an insulating cylinder. Both ends of the element, which has been stored in the open, are connected to both upper and lower electrodes fixed to both ends of the insulating cylinder, and further inside the cylinder. A full-area high-voltage cutout current-limiting fuse is used in the insulating space of the fuse, which is densely filled with arc-extinguishing agent.
ところで、上記高圧カツトアウト用限流ヒユー
ズは、高圧カツトアウトに内装されて使用される
従前よりの放出形ヒユーズ筒との互換性を考え
て、外観形状を同一にし、絶縁筒の直径を該放出
形ヒユーズの絶縁筒と同径にしている。つまり一
般形の限流ヒユーズに比較して絶縁筒の直径を小
さくしている。 By the way, the above-mentioned current-limiting fuse for a high-voltage cutout has the same external shape and the diameter of the insulating tube as that of the conventional discharge-type fuse tube used inside the high-pressure cutout. The diameter is the same as that of the insulating tube. In other words, the diameter of the insulating tube is smaller than that of a general type current limiting fuse.
そのため、絶縁筒に収納された巻芯および同巻
芯に捲回してなるヒユーズエレメントは絶縁筒の
内壁に対し接近した状態になつている。したがつ
て絶縁筒内で発生するアークエネルギーが最大と
なる電流値（ヒユーズの定格が７Ａ〜１５Ａの高
圧限流ヒユーズにおいては2000A程度とされてい
る。）での遮断ではアークが集中して噴出する消
弧チユーブの端部付近において大きな粒径の高抵
抗物質（通称いも虫という）が形成されるため、
もし絶縁筒に収納した巻芯および同巻芯に捲回し
たヒユーズエレメントが偏心して取り付けられた
りしていると同エレメントが絶縁筒の内壁に対し
極端に接近したり、接触するすることになるため
エレメントに沿つて形成される高温溶融状態の高
抵抗物質が無機質のガラスあるいは磁器よりなる
絶縁筒を局部的に過熱して同筒を偏熱破壊させ
る。 Therefore, the core housed in the insulating tube and the fuse element wound around the core are close to the inner wall of the insulating tube. Therefore, if the current is cut off at the current value at which the arc energy generated within the insulating cylinder is at its maximum (for high-voltage current-limiting fuses with fuse ratings of 7A to 15A, it is said to be around 2000A), the arc will concentrate and blow out. A large particle-sized, high-resistance substance (commonly known as a caterpillar) is formed near the end of the arc-extinguishing tube.
If the core housed in the insulating tube and the fuse element wound around the core are installed eccentrically, the element will come extremely close to or come into contact with the inner wall of the insulating tube. A high-resistance material in a high-temperature molten state that is formed along the element locally overheats an insulating tube made of inorganic glass or porcelain, causing uneven heat destruction of the tube.
それがため、巻芯およびこれに捲回したヒユー
ズエレメントを常に絶縁筒の中心に支持させるこ
とは極めて重要なことである。 Therefore, it is extremely important to always support the winding core and the fuse element wound around it at the center of the insulating cylinder.
本考案はこのような技術的課題を解決するため
に提案するもので、
周りに消弧チユーブ４を被せた低融点合金３と
銀線部２とを直列に接続したヒユーズエレメント
５を巻芯１に対しその外周面にスパイラルに捲回
して絶縁筒１０の上下両端に設けた上下部両電極
１３，１４にそれぞれ接続すると共にさらに絶縁
筒１０内の絶縁空間１０ｃには消弧剤１７を充填
した全領域形高圧カツトアウトヒユーズにおい
て、上記巻芯１には、その一方の上端１ｂに上部
端子金具１２を嵌着し而も同端子金具１２の外方
へ拡がるラツパ状の係止面１２ａを絶縁筒１０の
上端１０ａに固着した上部電極１３の中心孔１３
ａのテーパ状の係止面１３ｂに対し密着支持する
と共にさらに巻芯１の他方の下端１ａには、巻芯
１の軸線方向に直結した溶断表示用ケース６と同
ケース６の係止部６ａにその取付部９ａを一体に
固着した下部端子金具９の取付部９ａの周縁に立
設しかつ相対して設けた係合部９ｂと通電部９ｃ
とを絶縁筒１０の下端外面１０a′に対し嵌着して
上記巻芯１および同巻芯１に捲回したヒユーズエ
レメント５を絶縁筒１０内の中心に収納配置する
と共に上記下部端子金具９の通電部９ｃの先端の
連結部９ｄを上記下部電極１４に接続し、さらに
絶縁筒１０内に収納配置した上記消弧チユーブ４
の位置を上記絶縁筒内への収納に際して絶縁筒１
０の下部外周に一体に設けた上記下部電極１４よ
り下端側に接近させて収納すると共にさらに上記
消弧チユーブ４が位置する絶縁筒１０の外周面に
は機械的強度を有する袋状の耐熱性補強カバー１
６を、上記端子金具９の係合部９ｂを同カバー１
６の側周面に設けた係合溝１６ｂにまた通電部９
ｃ係合溝１６ｅにそれぞれ係合し、而も連結部９
ｄを除く下部端子金具９の取付部９ａ、係合部９
ｂおよび通電部９ｃの外周面を覆うようにして接
着材２１により重合被着したことを特徴とする全
領域形高圧カツトアウト用限流ヒユーズの構成に
関するものである。 The present invention is proposed to solve such technical problems, and consists of a winding core 1, a fuse element 5 in which a low-melting point alloy 3 and a silver wire part 2 are connected in series with an arc-extinguishing tube 4. On the other hand, an arc extinguishing agent 17 was wound spirally around the outer peripheral surface of the insulating cylinder 10 and connected to both upper and lower electrodes 13 and 14 provided at both the upper and lower ends of the insulating cylinder 10, respectively, and an insulating space 10c inside the insulating cylinder 10 was filled with arc extinguishing agent 17. In the full-area type high-voltage cut-out fuse, an upper terminal fitting 12 is fitted to one upper end 1b of the winding core 1, and a latch-shaped locking surface 12a extending outward of the terminal fitting 12 is insulated. Center hole 13 of upper electrode 13 fixed to upper end 10a of cylinder 10
In addition to closely supporting the tapered locking surface 13b of the winding core 1, the other lower end 1a of the winding core 1 has a fusing display case 6 directly connected to the axial direction of the winding core 1, and a locking portion 6a of the case 6. An engaging portion 9b and a current-carrying portion 9c are provided upright on the periphery of the mounting portion 9a of the lower terminal fitting 9, the mounting portion 9a of which is integrally fixed to the
The winding core 1 and the fuse element 5 wound around the winding core 1 are fitted into the lower end outer surface 10a' of the insulating tube 10, and the fuse element 5 wound around the winding core 1 is housed in the center of the insulating tube 10. The arc-extinguishing tube 4 is connected to the lower electrode 14 at the connecting portion 9d at the tip of the current-carrying portion 9c, and is housed in the insulating tube 10.
When storing the position of the insulating tube 1 in the above insulating tube.
The insulation tube 10 is housed closer to the lower end than the lower electrode 14, which is integrally provided on the outer circumference of the lower part of the insulating tube 10, and on the outer circumferential surface of the insulating tube 10, where the arc extinguishing tube 4 is located, there is a bag-shaped heat-resistant material having mechanical strength. Reinforcement cover 1
6, and the engaging part 9b of the terminal fitting 9 with the same cover 1.
The current-carrying portion 9 is also connected to the engaging groove 16b provided on the side circumferential surface of 6.
c engages with the engagement grooves 16e, and also connects the connecting portions 9.
Mounting part 9a and engaging part 9 of lower terminal fitting 9 except d
This invention relates to the structure of a current-limiting fuse for full-area high-voltage cutout, characterized in that an adhesive material 21 is polymerized and adhered to cover the outer peripheral surfaces of the current-carrying portion 9b and the current-carrying portion 9c.
以下、本考案の実施例について具体的に説明す
る。１はコージライトあるいはアルミナ焼結体よ
りなるパイプ状の巻芯であり、同巻芯１には図示
するように銀線部２と低融点合金部３とを直列に
接続しさらにその低融点合金部３の周りに消弧チ
ユーブ４を被せたヒユーズエレメント５がその全
長に亙つてスパイラルに捲回されており、さらに
同エレメントの両端は上端が後述の上部端子金具
１２および金属蓋１９を介して下部電極１３に、
また下端が下部端子金具９を介して下部電極１４
にそれぞれ接続されており、特に消弧チユーブ４
については上記捲回に際して溶断表示体用ケース
６側、つまり絶縁筒１０の下端１０ａ側に接近し
た位置に捲回されている。消弧チユーブ４はテフ
ロンチユーブ、シリコンチユーブからなりアーク
によつて消弧性ガスを発生する部材が使用されて
いる。７は巻芯内に挿通された上記ヒユーズエレ
メント５と電気的に並列に接続された表示用抵抗
線であり、ヒユーズエレメント５が溶断した後同
抵抗線に電流が移行し同抵抗線を熔融切断して表
示用体ケース６内の表示体８を同ケースの下端か
ら突出させるものである。９は溶断表示体用ケー
ス６の鍔状の係止部６ａに対しその内側からリン
グ状の取付部９ａを嵌めて両者を接着材により一
体に固着した全体がクランク状に曲折してなる下
部端子金具であり、同金具９はこのリング状の取
付部９ａのほかに絶縁筒１０の下端外面１０a′に
嵌着する係合部９ｂと同係合部に対向する位置に
形成した通電部９ｃとその先端の連結部９ｄとか
ら構成されている。また溶断表示体用ケース６は
合成樹脂からなりその内部には表示体８とこれを
飛び出し方向（下端方向）に付勢するバネ（特に
図示しない）とを収納しさらに先端の嵌合部６ｂ
を巻芯１の下端外周１ａに嵌合させたのち接着材
１１でこれを固定するようにしたもので、巻芯１
と同ケース６は同巻芯を延長するように直線的に
連結されており、さらにまた下部端子金具９が同
表示体用ケース６に対し接着材により一体に固着
されている。１２は巻芯１の上端１ｂに嵌着した
係止部材兼用の上部端子金具であり、巻芯１を絶
縁筒１０内に収納する場合に該金具のラツパ状に
形成した係止面１２ａを絶縁筒１０の上端外周１
０b′に固着した上部電極１３の中心孔１３ａのテ
ーパ状の係止面１３ｂに密着させて該巻芯の上端
側を絶縁筒１０内の中心に支持すると共にさらに
同巻芯１の下端側も表示体用ケース６と一体の下
部端子金具９を該金具９のリング状の取付部９ａ
が絶縁筒１０の下端面１０a″に当接するように同
金具９の係合部９ｂおよび通電部９ｃを絶縁筒１
０の下端外面１０a′に嵌着して巻芯１の上端側を
絶縁筒１０内の中心に支持するもので、該支持構
造により巻芯１および巻芯に捲回したヒユーズエ
レメント５は常に結晶化ガラスあるいは磁器より
なる絶縁筒１０内の中心に位置して支持される。
１４は絶縁筒１０の下部外周面に一体に固定した
下部電極であり絶縁筒１０の下端１０ａ側に向か
つて延出した同電極１４の接続部１４ａには上記
下部端子金具９の連結部９ｄをビス１５によつて
接続している。なお、絶縁筒内に収納したヒユー
ズエレメント５はその消弧チユーブ４を前記した
ように下部電極１４より下端側に位置して収納配
置することが必要である。１６は同消弧チユーブ
４の位置する絶縁筒１０下端外面１０a′に上記下
部端子金具９を覆うように接着材２１によつて重
合的に被着した機械的強度を有する例えば、プリ
ミツクス等の合成樹脂等からなる耐熱性補強カバ
ーであり、該カバーは、前端を開口しまた後端を
閉鎖して袋状に形成したもので、下部電極の接続
部１４ａが位置する欠所１６ａと、下部端子金具
９の係合部９ｂが嵌まる係合溝１６ｂと、通電部
９ｃが嵌まる係合溝１６ｅと、閉鎖した後端１６
ｃの中央に位置して形成した表示用***１６ｄと
を備えている。１７は絶縁筒１０の空間１０ｃに
密に充填した消弧剤であり粉末状の石英、アルミ
ナ等が使用されている。１８は上部電極の中心孔
１３ａを閉鎖する石綿等の断熱部材、１９は断熱
部材１８の外側から重ねた金属蓋、２０は半田を
示す。 Examples of the present invention will be described in detail below. Reference numeral 1 denotes a pipe-shaped winding core made of cordierite or alumina sintered body, and the winding core 1 has a silver wire portion 2 and a low melting point alloy portion 3 connected in series as shown in the figure. A fuse element 5 with an arc-extinguishing tube 4 placed around the section 3 is spirally wound over its entire length, and the upper ends of the element are connected to each other via an upper terminal fitting 12 and a metal lid 19 (described later). On the lower electrode 13,
Further, the lower end is connected to the lower electrode 14 via the lower terminal fitting 9.
are connected to each, especially arc extinguishing tube 4.
During the winding, the wire is wound to a position close to the fuse cut indicator case 6 side, that is, to the lower end 10a side of the insulating tube 10. The arc-extinguishing tube 4 is made of a Teflon tube or a silicon tube, and uses a member that generates arc-extinguishing gas by an arc. Reference numeral 7 denotes an indicating resistance wire that is electrically connected in parallel with the fuse element 5 inserted into the winding core, and after the fuse element 5 is blown, a current is transferred to the resistance wire and the resistance wire is melted and cut. The display body 8 in the display body case 6 is made to protrude from the lower end of the case. Reference numeral 9 denotes a lower terminal formed by fitting a ring-shaped attachment part 9a from the inside of the collar-shaped locking part 6a of the fusing indicator case 6 and fixing both parts together with an adhesive, so that the whole is bent into a crank shape. In addition to this ring-shaped attachment part 9a, the metal fitting 9 has an engaging part 9b that fits into the outer surface 10a' of the lower end of the insulating tube 10, and a current-carrying part 9c formed at a position opposite to the engaging part. and a connecting portion 9d at the tip thereof. The fusing indicator case 6 is made of synthetic resin, and houses therein the indicator 8 and a spring (not particularly shown) that biases the indicator 8 in the protruding direction (lower end direction).
is fitted onto the lower end outer periphery 1a of the winding core 1 and then fixed with an adhesive 11.
The display case 6 is linearly connected to extend the core, and a lower terminal fitting 9 is integrally fixed to the display case 6 with an adhesive. Reference numeral 12 denotes an upper terminal metal fitting that also serves as a locking member and is fitted onto the upper end 1b of the winding core 1. When the winding core 1 is housed in the insulating tube 10, the locking surface 12a formed in the shape of a lug is insulated. Upper end outer circumference 1 of cylinder 10
The upper end of the core is supported at the center of the insulating cylinder 10 by being in close contact with the tapered locking surface 13b of the center hole 13a of the upper electrode 13 fixed to the upper electrode 13, and the lower end of the core 1 is also supported. The lower terminal fitting 9 integrated with the display case 6 is attached to the ring-shaped mounting portion 9a of the fitting 9.
The engaging portion 9b and current-carrying portion 9c of the metal fitting 9 are connected to the insulating tube 1 so that
0 and supports the upper end side of the winding core 1 at the center of the insulating cylinder 10. Due to this support structure, the winding core 1 and the fuse element 5 wound around the winding core are always free from crystalline crystals. It is supported at the center of an insulating cylinder 10 made of glass or porcelain.
Reference numeral 14 denotes a lower electrode that is integrally fixed to the outer peripheral surface of the lower part of the insulating tube 10, and the connecting portion 9d of the lower terminal fitting 9 is connected to the connecting portion 14a of the electrode 14 that extends toward the lower end 10a of the insulating tube 10. They are connected by screws 15. The fuse element 5 housed in the insulating cylinder must be housed with its arc-extinguishing tube 4 located on the lower end side of the lower electrode 14 as described above. Reference numeral 16 denotes a composite material having mechanical strength, such as Primix, which is polymerized and adhered to the outer surface 10a' of the lower end of the insulating tube 10, where the arc extinguishing tube 4 is located, with an adhesive 21 so as to cover the lower terminal fitting 9. It is a heat-resistant reinforcing cover made of resin or the like, and the cover is formed into a bag shape with the front end open and the rear end closed, and has a cutout 16a where the connection part 14a of the lower electrode is located, and a lower terminal. An engagement groove 16b into which the engagement part 9b of the metal fitting 9 fits, an engagement groove 16e into which the current-carrying part 9c fits, and a closed rear end 16.
A display small hole 16d is formed at the center of the screen. Reference numeral 17 denotes an arc extinguishing agent that is densely filled in the space 10c of the insulating cylinder 10, and is made of powdered quartz, alumina, or the like. 18 is a heat insulating member such as asbestos that closes the center hole 13a of the upper electrode, 19 is a metal lid stacked on the heat insulating member 18 from the outside, and 20 is solder.
本考案は以上の構成からなり、
周りに消弧チユーブ４を被せた低融点合金３と
銀線部２とを直列に接続したヒユーズエレメント
５を巻芯１に対しその外周面にスパイラルに捲回
して絶縁筒１内に収納しさらにそのエレメント５
の両端を絶縁筒１０の上下両端に設けた上下部両
電極１３，１４にそれぞれ接続すると共にさらに
絶縁筒１０内の絶縁空間１０ｃには消弧剤１７を
充填した全領域形高圧カツトアウト用限流ヒユー
ズにおいて、上記巻芯１には、その一方の上端１
ｂに上部端子金具１２を嵌着し而も同端子金具１
２の外方へ拡がるラツパ状の係止面１２ａを絶縁
筒１０の上端１０ａに固着した上部電極１３の中
心孔１３ａのテーパ状の係止面１３ｂに対し密着
支持すると共にさらに巻芯１の他方の下端１ａに
は、巻芯１の軸線方向に直結した溶断表示用ケー
ス６と同ケース６の係止部６ａにその取付部９ａ
を一体に固着した下部端子金具９とを設け而も上
記下部端子金具９の取付部９ａの周縁に立設しか
つ相対して設けた係合部９ｂおよび通電部９ｃを
絶縁筒１０の下端外面１０a′に対し嵌着して上記
巻芯１および同巻芯１に捲回したヒユーズエレメ
ント５を絶縁筒１０内の中心に収納配置すると共
に上記下部端子金具９の通電部９ｃの先端の連結
部９ｄを上記下部電極１４に接続し、さらに上記
絶縁筒内に収納した消弧チユーブ４の位置を上記
収納に際して絶縁筒１０の下部外周に一体に設け
た上記下部電極１４より下端側に接近させて収納
すると共にさらに上記消弧チユーブ４が位置する
絶縁筒１０の下部外周面には機械的強度を有する
袋状の耐熱性補強カバー１６を、上記端子金具９
の係合部９ｂを同カバー１６の側周面に設けた係
合溝１６ｂに、また通電部９ｃを係合溝１６ｅに
それぞれ係合し而も連結部９ｄを除く下部端子金
具９の取付部９ａ、係合部９ｂおよび通電部９ｃ
の外周面を覆うようにして接着材２１により重合
被着した結果、
巻芯１に捲回されたヒユーズエレメント５が遮
断によつて気化し消弧剤中に拡散して高熱状態の
高抵抗物質を形成しても上記のごとくヒユーズエ
レメントが常に正確かつ安定した状態で絶縁筒１
０内の中心に位置して収納支持されるため、上記
高抵抗物質は、まず絶縁筒の内壁面に接触（到
達）することはない。つまり遮断時における絶縁
筒の偏熱破壊は確実に防止される。 The present invention has the above-mentioned structure, and a fuse element 5 in which a low-melting point alloy 3 and a silver wire portion 2 connected in series with an arc-extinguishing tube 4 is wound spirally on the outer circumferential surface of a winding core 1. The element 5 is then stored in the insulating cylinder 1.
The both ends of the insulating cylinder 10 are connected to the upper and lower electrodes 13 and 14 provided at both the upper and lower ends of the insulating cylinder 10, respectively, and the insulating space 10c inside the insulating cylinder 10 is filled with an arc extinguishing agent 17. In the fuse, the winding core 1 has one upper end 1
The upper terminal fitting 12 is fitted to b, and the same terminal fitting 1 is
The outwardly expanding tapered locking surface 12a of the winding core 1 is tightly supported against the tapered locking surface 13b of the center hole 13a of the upper electrode 13 fixed to the upper end 10a of the insulating tube 10. At the lower end 1a of the winding core 1, there is a fusing display case 6 directly connected to the axial direction of the winding core 1, and a locking part 6a of the case 6 and a mounting part 9a thereof.
A lower terminal fitting 9 is integrally fixed to the outer surface of the lower end of the insulating tube 10, and an engaging portion 9b and an energizing portion 9c, which are erected on the periphery of the mounting portion 9a of the lower terminal fitting 9 and opposed to each other, are provided on the outer surface of the lower end of the insulating tube 10. 10a' and the winding core 1 and the fuse element 5 wound around the winding core 1 are housed and arranged in the center of the insulating tube 10, and the connection part at the tip of the current-carrying part 9c of the lower terminal fitting 9. 9d is connected to the lower electrode 14, and the arc extinguishing tube 4 housed in the insulating tube is moved closer to the lower end side than the lower electrode 14, which is integrally provided on the lower outer periphery of the insulating tube 10, when the tube is housed. A bag-shaped heat-resistant reinforcing cover 16 having mechanical strength is provided on the lower outer peripheral surface of the insulating tube 10 in which the arc-extinguishing tube 4 is located.
The engagement portion 9b of the cover 16 is engaged with the engagement groove 16b provided on the side circumferential surface of the cover 16, and the current-carrying portion 9c is engaged with the engagement groove 16e, excluding the connecting portion 9d. 9a, engaging portion 9b and current-carrying portion 9c
As a result, the fuse element 5 wound around the winding core 1 is vaporized by the interruption and diffused into the arc extinguishing agent, resulting in a highly heated high resistance material. Even if the insulating tube 1 is formed, the fuse element always remains accurate and stable as described above.
Since the high-resistance material is housed and supported at the center of the insulating cylinder, it does not first contact (reach) the inner wall surface of the insulating cylinder. In other words, uneven heat breakdown of the insulating tube during interruption is reliably prevented.
またアークエネルギーの大きな電流を遮断した
場合には、大抵消弧チユーブ４の両端付近におい
て大きな粒径の高抵抗物質が形成され、かかる抵
抗物質が内壁面に接触して絶縁筒１０を偏熱破壊
する事態も考えられるが、この場合にも消弧チユ
ーブ４が位置する絶縁筒１０の下端外周面、即ち
下部電極の下端側をさらに耐熱性補強カバー１６
でもつて重合被着するため絶縁筒１０が仮に偏熱
破壊してもその破壊状況をキレツ程度の軽微な状
態に止どめることができ、従来見られたような絶
縁筒の破壊による破片の落下、消弧剤の飛散、電
極の脱落等の重大な事故を招くことがなく一段と
安全性を高めることができる。 Furthermore, when a current with large arc energy is interrupted, a high-resistance substance with a large particle size is usually formed near both ends of the arc-extinguishing tube 4, and this resistance substance contacts the inner wall surface and causes uneven heat damage to the insulating tube 10. In this case as well, the outer peripheral surface of the lower end of the insulating cylinder 10 where the arc extinguishing tube 4 is located, that is, the lower end side of the lower electrode, is further covered with a heat-resistant reinforcing cover 16.
Even if the insulating tube 10 were to be damaged due to uneven heat, the damage could be kept to a minor level of cracking, since the insulating tube 10 would be damaged by polymerization. It is possible to further improve safety without causing serious accidents such as falling, scattering of arc extinguishing agent, and falling off of electrodes.
また、耐熱性補強カバー１６は、上記したよう
に絶縁筒への被着に際して下部端子金具９の連結
部９ｄを除く同金具９の外周面の全体を覆うよう
にして絶縁筒１０の下端外周面に固着されるが、
これは上記の偏熱破壊に対する補強効果を確実な
ものにするだけではなく、下部端子金具９に対す
る押圧面積を大きくして同金具の絶縁筒への取付
を一段と強固にすることができる。 In addition, as described above, when the heat-resistant reinforcing cover 16 is attached to the insulating tube, the lower end outer circumferential surface of the insulating tube 10 is covered so as to cover the entire outer circumferential surface of the lower terminal fitting 9 except for the connection part 9d. Although it is fixed to
This not only ensures the reinforcing effect against the uneven heat breakdown described above, but also increases the pressing area against the lower terminal metal fitting 9, thereby making the attachment of the metal fitting to the insulating cylinder even stronger.
また、巻芯１、溶断表示体用ケース６、下部端
子金具９が一体に固着され、また下部端子金具９
の係合部９ｂおよび通電部９ｃが耐熱性補強カバ
ー１６の係合溝１６ｂ、１６ｅにそれぞれ係合さ
れさらに同補強カバー１６が絶縁筒１０に対し接
着材を介して一体に被着されそしてこれらが相対
的に回動不能の構成になつているため、巻芯１が
不用意に回転することもなく、したがつて巻芯１
および溶断表示体用ケース６に捲回したヒユーズ
エレメント５が巻過ぎによつて切断されたりする
事故や、あるいは巻戻されて絶縁筒１０の内壁面
に接触しそして同筒を偏熱破壊したりする事故が
防止できる等すぐれた効果を有するもので実用上
極めて有効なものである。 Further, the winding core 1, the fusing indicator case 6, and the lower terminal fitting 9 are fixed together, and the lower terminal fitting 9
The engaging portion 9b and the current conducting portion 9c are respectively engaged with the engaging grooves 16b and 16e of the heat-resistant reinforcing cover 16, and the reinforcing cover 16 is integrally attached to the insulating cylinder 10 via an adhesive. Since the winding core 1 is configured to be relatively unrotatable, the winding core 1 does not rotate inadvertently.
Also, there is an accident in which the fuse element 5 wound around the fuse indicator case 6 is cut due to over-winding, or it is unwound and comes into contact with the inner wall surface of the insulating cylinder 10 and the cylinder is destroyed by uneven heat. It has excellent effects such as being able to prevent accidents caused by accidents, and is extremely effective in practice.
第１図は本考案の実施例を示す高圧カツトアウ
ト用限流ヒユーズの縦断面図、第２図は巻芯にヒ
ユーズエレメントを捲回した状態の拡大要部破断
図、第３図は第２図の底面図、第４図は第３図の
左側面図、第５図は耐熱性補強カバーの正面図、
第６図は同じく同カバーの縦断面図、第７図は第
６図の右側面図、第８図は下部端子金具の正面
図、第９図は同じく底面図、第１０図は同じく右
側面図をそれぞれ示す。
１……巻芯、１ａ……下端、１ｂ……上端、２
……銀線部、３……低融点合金部、４……消弧チ
ユーブ、５……ヒユーズ、６……溶断表示体用ケ
ース、９……下部端子金具、９ａ……取付部、９
ｂ……係合部、９ｃ……通電部、９ｄ……連結
部、１０……絶縁筒、１０ａ……下端、１０a′…
…下端外面、１０ｂ……上端、１０ｃ……絶縁空
間、１２……上部端子金具、１２ａ……係止面、
１３……上部電極、１３ａ……中心孔、１３ｂ…
…係止面、１４……下部電極、１６……耐熱性補
強カバー、１６ａ……欠所、１６ｂ……係合溝、
１６ｃ……後端、１６ｄ……表示体用***、１６
ｅ……係合溝、１７……消弧剤、２１……接着
材。
Fig. 1 is a longitudinal sectional view of a current limiting fuse for high-pressure cutout showing an embodiment of the present invention, Fig. 2 is an enlarged cutaway view of the main part of the fuse element wound around the winding core, and Fig. 3 is the same as Fig. 2. Figure 4 is the left side view of Figure 3, Figure 5 is the front view of the heat-resistant reinforcing cover,
Figure 6 is a longitudinal sectional view of the same cover, Figure 7 is a right side view of Figure 6, Figure 8 is a front view of the lower terminal fitting, Figure 9 is a bottom view, and Figure 10 is a right side view. Figures are shown respectively. 1... Winding core, 1a... Lower end, 1b... Upper end, 2
... Silver wire part, 3 ... Low melting point alloy part, 4 ... Arc extinguishing tube, 5 ... Fuse, 6 ... Fusing indicator case, 9 ... Lower terminal fitting, 9a ... Mounting part, 9
b...Engaging part, 9c...Electrifying part, 9d...Connecting part, 10...Insulating cylinder, 10a...Lower end, 10a'...
... lower end outer surface, 10b ... upper end, 10c ... insulation space, 12 ... upper terminal fitting, 12a ... locking surface,
13... Upper electrode, 13a... Center hole, 13b...
... Locking surface, 14 ... Lower electrode, 16 ... Heat-resistant reinforcing cover, 16a ... Defect, 16b ... Engagement groove,
16c...Rear end, 16d...Small hole for display, 16
e... Engagement groove, 17... Arc-extinguishing agent, 21... Adhesive material.
Claims (1)
銀線部２とを直列に接続したヒユーズエレメント
５を巻芯１に対しその外周面にスパイラルに捲回
して絶縁筒１内に収納しさらにそのエレメント５
の両端を絶縁筒１０の上下両端に設けた上下部両
電極１３，１４にそれぞれ接続すると共にさらに
絶縁筒１０内の絶縁空間１０ｃには消弧剤１７を
充填した全領域形高圧カツトアウト用限流ヒユー
ズにおいて、上記巻芯１には、その一方の上端１
ｂに上部端子金具１２を嵌着し而も同端子金具１
２の外方へ拡がるラツパ状の係止面１２ａを絶縁
筒１０の上端１０ａに固着した上部電極１３の中
心孔１３ａのテーパ状の係止面１３ｂに対し密着
支持すると共にさらに巻芯１の他方の下端１ａに
は、巻芯１の軸線方向に直結した溶断表示体用ケ
ース６と同ケース６の係止部６ａにその取付部９
ａを一体に固着した下部端子金具９とを設け而も
上記下部端子金具９の取付部９ａの周縁に立設し
かつ相対して設けた係合部９ｂおよび通電部９ｃ
を絶縁筒１０の下端外面１０a′に対し嵌着して上
記巻芯１および同巻芯１に捲回したヒユーズエレ
メント５を絶縁筒１０内の中心に収納配置すると
共に上記下部端子金具９の通電部９ｃの先端の連
結部９ｄを上記下部電極１４に接続しさらに上記
絶縁筒１０内に収納配置した消弧チユーブ４の位
置を上記の絶縁筒への収納に際して絶縁筒１０の
下部外周に一体に設けた上記下部電極１４より下
端側に接近させて収納する共にさらに上記消弧チ
ユーブ４が位置する絶縁筒１０の下部外周面に
は、機械的強度を有する袋状の耐熱性補強カバー
１６を、上記端子金具９の係合部９ｂを同カバー
１６の側周面に設けた係合溝１６ｂにまた、通電
部９ｃを係合溝１６ｅにそれぞれ係合し而も連結
部９ｄを除く下部端子金具９の取付部９ａ、係合
部９ｂおよび通電部９ｃの外周面を覆うようにし
て接着材２１により重合被着したことを特徴とす
る全領域形高圧カツトアウト用限流ヒユーズ。 A fuse element 5 in which a low melting point alloy 3 and a silver wire portion 2 connected in series with an arc extinguishing tube 4 covered therewith is spirally wound around the winding core 1 on its outer peripheral surface and housed in the insulating tube 1. The element 5
The both ends of the insulating cylinder 10 are connected to the upper and lower electrodes 13 and 14 provided at both the upper and lower ends of the insulating cylinder 10, respectively, and the insulating space 10c inside the insulating cylinder 10 is filled with an arc extinguishing agent 17. In the fuse, the winding core 1 has one upper end 1
The upper terminal fitting 12 is fitted to b, and the same terminal fitting 1 is
The outwardly expanding tapered locking surface 12a of the winding core 1 is tightly supported against the tapered locking surface 13b of the center hole 13a of the upper electrode 13 fixed to the upper end 10a of the insulating tube 10. At the lower end 1a of the winding core 1, there is provided a case 6 for a fusing indicator that is directly connected to the axial direction of the winding core 1, and a mounting portion 9 attached to a locking portion 6a of the case 6.
A is integrally fixed to the lower terminal fitting 9, and an engaging portion 9b and an energizing portion 9c are provided upright on the periphery of the mounting portion 9a of the lower terminal fitting 9 and are provided opposite to each other.
is fitted onto the outer surface 10a' of the lower end of the insulating tube 10, and the winding core 1 and the fuse element 5 wound around the winding core 1 are housed in the center of the insulating tube 10, and the lower terminal fitting 9 is energized. The connecting portion 9d at the tip of the portion 9c is connected to the lower electrode 14, and the arc extinguishing tube 4, which is housed in the insulating tube 10, is positioned integrally with the lower outer periphery of the insulating tube 10 when stored in the insulating tube 10. A bag-shaped heat-resistant reinforcing cover 16 having mechanical strength is provided on the lower outer circumferential surface of the insulating cylinder 10, which is housed closer to the lower end than the provided lower electrode 14 and where the arc-extinguishing tube 4 is located. The engaging portion 9b of the terminal fitting 9 is engaged with the engaging groove 16b provided on the side circumferential surface of the cover 16, and the current-carrying portion 9c is engaged with the engaging groove 16e, and the lower terminal fitting 9 excludes the connecting portion 9d. 9. A current-limiting fuse for full-area high-voltage cut-out, characterized in that the outer peripheral surfaces of the mounting portion 9a, engaging portion 9b, and current-carrying portion 9c of No. 9 are polymerized and adhered with an adhesive 21.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8356981U JPS635162Y2 (en) | 1981-06-05 | 1981-06-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8356981U JPS635162Y2 (en) | 1981-06-05 | 1981-06-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57195743U JPS57195743U (en) | 1982-12-11 |
| JPS635162Y2 true JPS635162Y2 (en) | 1988-02-12 |
Family
ID=29878987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8356981U Expired JPS635162Y2 (en) | 1981-06-05 | 1981-06-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS635162Y2 (en) |
-
1981
- 1981-06-05 JP JP8356981U patent/JPS635162Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57195743U (en) | 1982-12-11 |
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