JPS6328511Y2 - - Google Patents
Info
- Publication number
- JPS6328511Y2 JPS6328511Y2 JP10775285U JP10775285U JPS6328511Y2 JP S6328511 Y2 JPS6328511 Y2 JP S6328511Y2 JP 10775285 U JP10775285 U JP 10775285U JP 10775285 U JP10775285 U JP 10775285U JP S6328511 Y2 JPS6328511 Y2 JP S6328511Y2
- Authority
- JP
- Japan
- Prior art keywords
- insulating
- fuse
- cover
- fuse element
- display
- 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 14
- 239000000956 alloy Substances 0.000 claims description 11
- 229910045601 alloy Inorganic materials 0.000 claims description 11
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 229910052878 cordierite Inorganic materials 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
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 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】
本考案は低融点合金部と銀線部とを直列に接続
しさらにその低融点合金部の外周には消弧チユー
ブを被せたヒユーズエレメントを絶縁筒内に収納
しその収納したエレメントの両端を絶縁筒の上下
両電極にそれぞれ接続しさらに絶縁筒の絶縁空間
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、その目的とすると
ころは、原出願は、ヒユーズエレメント５を絶縁
筒１内の中心部に設置させるために巻芯２の一端
の上部電極７に対する係合と巻芯の他端に固定さ
れた表示用収納ケースの下部カバー１６の中心に
対する係合によつて行なうようにしたものである
が、本願は、絶縁筒の下端部における充電部の露
出を極力防止すると共にヒユーズの遮断時には表
示体が確実に下部カバー外へ突出表示するように
したヒユーズを提案することにある。
以下、本案の実施例を具体的に説明する。
本案の目的は低倍率電流が流れてヒユーズエレ
メントの小電流遮断部が遮断された際に残つた大
電流遮断部としての銀線部と下部電極との間に加
わる電圧によつて絶縁筒が絶縁破壊しないように
した限流ヒユーズを提案しようとするものであ
る。
つまり、低融点合金部３と銀線部４とを直列に
接続しその低融点合金部３の外周に消弧チユーブ
２０を被せたヒユーズエレメント５をスパイラル
に巻いて１内に密閉収納しその収納したエレメン
トの両端を絶縁筒１の上下外周に固着した上下部
両電極７，８にそれぞれ接続しさらに絶縁筒１の
絶縁空間１ｂに消弧剤６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、上記ヒユ
ーズエレメント５と下部電極８間に介在して両者
を接続し而も絶縁筒１の下端１ｃより下端外面１
ｄに沿つて上方に延出して設けられた導電板１７
対し同板を覆うように該絶縁筒１の下端外面１ｄ
には袋状の下部カバー１６を被着すると共にさら
に同カバー１６の下端１６ａの中央に設けた表示
用***１６ｃに対し上記表示用収納ケース１３に
内装され而も飛び出し方向に常時付勢されさらに
先端１４ｂをアール状に形成した表示体１４を同
表示体１４の先端１４ｂがカバー１６外へ露出し
ない程度に嵌入させ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に関するもので
ある。
１は無機質のガラスあるいはアルミナ磁器より
なる絶縁筒であり、その筒内にはコージライトあ
るいはアルミナ焼結体よりなる巻芯２とこの巻芯
２の外周面２ａに対しその全長に亘つてスパイラ
ルにヒユーズエレメント５が巻回されている。ヒ
ユーズエレメント５は低融点合金部３と銀線部４
とを直列接続したものでその低融点合金部３の外
周面には消弧チユーブ２０が被せられている。２
１は消弧チユーブ２０内に消弧剤６が侵入しない
ように同チユーブ２０の両端の開口部２０ａに挿
着したガラス繊維性の密栓を示す。上記構成から
なる巻芯２およびヒユーズエレメント５は該エレ
メント５の消弧チユーブ２０を被せた低融点合金
部３が絶縁筒１の上下外周に固着した上部電極７
と下部電極８との間に位置するように絶縁筒１内
に密閉収納されるものでこれらの収納後さらに絶
縁筒１内の絶縁空間１ｂには硅砂、石英等からな
る消弧剤６が充填される。７，８は絶縁筒１の上
下外周に固着した挿入刃付きの上部電極と下部電
極であり、上部電極７の上端開口部７ｂには巻芯
２の上端部に嵌着したラツパ状のカイド金具２２
の係止部２２ａがそのテーパ状の内壁面７ｃに係
止して該巻芯２が絶縁筒１内の中心に支持される
ようになつている。９は中空の巻芯２内に配設さ
れた表示用抵抗線であり、同抵抗線９の一端と銀
線部４ａとは上記開口部７ｂを閉鎖する石綿等の
断熱性クツシヨン材１０を介して外部へ導出され
さらにその外側に密着した板状の金属キヤツプ１
１に半田付けされて上部電極７に接続されてい
る。１２はその半田を示す。１３は絶縁筒１の下
端に位置して内装した絶縁部材（合成樹脂）より
なる表示体用収納ケースであり同ケースはその一
端に設けた軸線方向に突出するガイド部１３ａを
巻芯２の下端２ｂに差し込んで同巻芯２を軸線方
向に延長するようにして直結している。９は巻芯
２内に配設した表示体用抵抗線であり同線は表示
用収納ケース１３に内装した表示体１４に一旦連
結しさらにその余長部分をヒユーズエレメント５
の銀線部４と共に導電板１７の一端１７ａに接続
している。１５は表示体１４の係止段部１４ａと
収納ケース１３の上端部１３ｂ間に圧縮状態で介
在する表示体用バネであり、表示体１４を常時飛
び出し方向（下方）に付勢している。１７は下部
カバー１６の絶縁筒１に対する取付時、同絶縁筒
と下部カバー１６間で挟着固定される導電板であ
り、その一端１７ａに位置させて上記のごとく銀
線部４と接続しさらに絶縁筒１の下端より下端外
面１ｄに沿つて上方へ延出した他端１７ｂをビス
１８によつて下部電極８に接続している。１６は
導電板１７を覆うようにして絶縁筒１の下端外面
１ｄを被着した袋状の下部カバーでありその後端
１６ａの中央には係合凹部１６ｂを表示体用***
１６ｃとが設けられその内の係合凹部１６ｂを収
納筒１３の下端部１３ｃに嵌め、さらに表示体用
***１６ｃには先端１４ｂをアール状に形成した
表示体１４を同表示体１４の先端１４ｂがカバー
１６外へ突出しない程度に同***１６ｃに嵌入さ
せている。１９は消弧チユーブ２０を覆うように
して絶縁筒１の内壁面１ａとヒユーズエレメント
５との間に介在した石綿等よりななるパイプ状の
絶縁性断熱部材であり、同部材は遮断時にアーク
と消弧剤６とによつて生成される高抵抗体物質の
絶縁筒１の内壁面１ａに対する断熱と低電流遮断
後における銀線部４と下部電極８間の耐圧を確保
することを目的としたものである。なお、絶縁性
断熱部材１９はさらに絶縁筒１の内壁面１ａと表
示体用収納ケース１３との間に介在させて同収納
筒１３を覆うようにしているが、この場合は遮断
時に生成される高抵抗体物質が絶縁筒１の内壁面
１ａに接触しないように断熱の意味で介在させて
いる。
さて、上記構成のヒユーズにおいて、故障電流
が流れそれが大電流の場合には同ヒユーズのヒユ
ーズエレメントがその全長に亘つて瞬時に発弧し
その発生したアークは消弧剤中に拡散して高抵抗
体物質を生成しこれによつて絶縁回復がなされて
遮断が完了する。そしてこの場合アークと消弧剤
とによつて高熱の高抵抗体物質が生成されるが同
抵抗体物質は絶縁性断熱部材１９によつて絶縁筒
１の内壁面１ａへの直接接触（到達）が阻止され
るため絶縁筒は局部過熱されず従つて偏熱破壊し
ない。なお、この場合ヒユーズエレメント５の溶
断と同時に同電流がヒユーズエレメント５と並列
に接続した表示用抵抗線９に移行して流れるた
め、同抵抗線９が続いて溶断しそれによつて常時
飛び出し方向に付勢された表示体１４が表示用バ
ネ１５により下部カバー１６の表示体用***１６
ｃより飛び出してヒユーズや溶断したことを表示
する。また、表示の際、表示体１４はその係止段
部１４ａが下部カバー１６の係合凹部１６ｃに係
止されて表示体１４はその飛び出し過ぎが防止さ
れる。
次に故障電流が小さい場合には低融点合金部３
において溶断発弧しそのアークによる熱で同合金
部３に被せた消弧チユーブ２０が熱分解して消弧
性ガスを発生させそれによりアークは消弧され遮
断される。なお、表示体は上記同様に突出動作し
てヒユーズが溶断したことを表示する。
本案は以上の構成からなり、絶縁筒１の下端部
に設けた導電板１７を覆うようにして袋状の下部
カバー１６を被着した結果、同ヒユーズ（筒）の
カツトアウトへの取付および取り外しが安全に行
える。さらにヒユーズの下端部をカツトアウトの
本体より若干突出させた使用形態（カツトアウト
にヒユーズを取り付けて使用する場合はヒユーズ
の溶断状態を見易くするために一般のカツトアウ
トでは本体の開口部にヒユーズの表示体側を位置
させるようにしている。）においても安全である。
また、充電部を覆うように被着した上記の下部カ
バー１６にはその後端１６ａの中央に位置して表
示体用***１６ｃを設けるとともに該***１６ｃ
に対し表示用収納ケース１３に内装し而も先端１
４ｂをアール状に形成した表示体１４の同先端１
４ｂを下部カバー１６外へ露出しないように嵌入
させるようにした結果、表示体１４がカバー１６
の表示体用***１６ｂに引つ掛かつてその飛び出
し動作が邪魔されることもなく正確な溶断表示が
行えるもので実用上有効なものである。 [Detailed description of the invention] The invention consists of a fuse element in which a low melting point alloy part and a silver wire part are connected in series, and an arc extinguishing tube is placed over the outer periphery of the low melting point alloy part, and the fuse element is housed in an insulating tube. The purpose of this project is to improve a current-limiting fuse for full-area high-voltage cut-out, in which both ends of the stored element are connected to the upper and lower electrodes of an insulating tube, and the insulating space of the insulating tube is filled with arc extinguishing agent. In the original application, in order to install the fuse element 5 in the center of the insulating cylinder 1, one end of the winding core 2 is engaged with the upper electrode 7, and the lower cover of the display storage case is fixed to the other end of the winding core. However, in the present invention, exposure of the live part at the lower end of the insulating tube is prevented as much as possible, and the display body is reliably projected out of the lower cover when the fuse is cut off. The purpose is to suggest fuses that can be displayed. Examples of the present invention will be specifically described below. The purpose of this project is to insulate the insulating tube by the voltage applied between the lower electrode and the silver wire section that remains as the large current interrupting section when a low-magnification current flows and the small current interrupting section of the fuse element is interrupted. This is an attempt to propose a current-limiting fuse that will not be destroyed. In other words, a fuse element 5 in which a low melting point alloy part 3 and a silver wire part 4 are connected in series and an arc extinguishing tube 20 is placed over the outer periphery of the low melting point alloy part 3 is spirally wound and hermetically stored in the interior of the fuse element 5 . A current limiting fuse for full-area high-voltage cut-out, in which both ends of the element are connected to upper and lower electrodes 7 and 8 fixed to the upper and lower outer peripheries of the insulating tube 1, respectively, and an arc extinguishing agent 6 is filled in the insulating space 1b of the insulating tube 1. , the fuse element 5 and the lower electrode 8 are interposed to connect them, and the lower end outer surface 1
A conductive plate 17 provided extending upward along d
On the other hand, the outer surface 1d of the lower end of the insulating cylinder 1 covers the same plate.
A bag-shaped lower cover 16 is attached to the bag-shaped lower cover 16, and a small display hole 16c provided at the center of the lower end 16a of the cover 16 is housed inside the display storage case 13, and is always urged in the pop-out direction. The present invention relates to a current-limiting fuse for full-area high-voltage cut-out, characterized in that a display body 14 having a rounded tip 14b is fitted to such an extent that the tip 14b of the display body 14 is not exposed to the outside of a cover 16. Reference numeral 1 denotes an insulating cylinder made of inorganic glass or alumina porcelain, and inside the cylinder there is a winding core 2 made of cordierite or alumina sintered body, and a winding core 2 that extends spirally over its entire length against the outer peripheral surface 2a of this winding core 2. A fuse element 5 is wound. The fuse element 5 has a low melting point alloy part 3 and a silver wire part 4.
The outer peripheral surface of the low melting point alloy portion 3 is covered with an arc extinguishing tube 20. 2
Reference numeral 1 indicates glass fiber seal plugs inserted into the openings 20a at both ends of the arc-extinguishing tube 20 to prevent the arc-extinguishing agent 6 from entering the tube. The winding core 2 and the fuse element 5 having the above configuration have an upper electrode 7 in which the low melting point alloy portion 3 covered with the arc extinguishing tube 20 of the element 5 is fixed to the upper and lower outer peripheries of the insulating cylinder 1.
After these are housed, the insulating space 1b inside the insulating tube 1 is filled with an arc extinguishing agent 6 made of silica sand, quartz, etc. be done. Reference numerals 7 and 8 denote an upper electrode and a lower electrode with insertion blades fixed to the upper and lower outer peripheries of the insulating cylinder 1, and the upper end opening 7b of the upper electrode 7 has a lug-shaped guide fitting fitted to the upper end of the winding core 2. 22
The locking portion 22a is locked to the tapered inner wall surface 7c, so that the winding core 2 is supported at the center within the insulating cylinder 1. Reference numeral 9 denotes a resistance wire for display disposed within the hollow winding core 2, and one end of the resistance wire 9 and the silver wire portion 4a are connected via a heat insulating cushion material 10 such as asbestos that closes the opening 7b. A plate-shaped metal cap 1 that is led out to the outside and is closely attached to the outside.
1 and connected to the upper electrode 7. 12 indicates the solder. Reference numeral 13 denotes a display storage case made of an insulating member (synthetic resin) located at the lower end of the insulating tube 1, and the case includes a guide portion 13a provided at one end of the case that protrudes in the axial direction. 2b, and are directly connected to extend the same winding core 2 in the axial direction. Reference numeral 9 denotes a resistance wire for the display body disposed inside the winding core 2. The wire is once connected to the display body 14 housed in the display storage case 13, and its remaining length is connected to the fuse element 5.
It is connected to one end 17a of the conductive plate 17 together with the silver wire portion 4. A display spring 15 is interposed in a compressed state between the locking step 14a of the display 14 and the upper end 13b of the storage case 13, and always urges the display 14 in the pop-out direction (downward). Reference numeral 17 designates a conductive plate that is clamped and fixed between the insulating tube and the lower cover 16 when the lower cover 16 is attached to the insulating tube 1, and is located at one end 17a of the conductive plate and connected to the silver wire portion 4 as described above. The other end 17b extending upward from the lower end of the insulating cylinder 1 along the lower end outer surface 1d is connected to the lower electrode 8 by a screw 18. Reference numeral 16 denotes a bag-shaped lower cover which covers the outer surface 1d of the lower end of the insulating tube 1 so as to cover the conductive plate 17, and the rear end 16a has an engaging recess 16b and a small hole 16c for display in the center of the rear end 16a. The inner engagement recess 16b is fitted into the lower end 13c of the storage tube 13, and the display body 14 is formed in the display body small hole 16c with a rounded tip 14b. It is fitted into the small hole 16c to the extent that it does not occur. Reference numeral 19 denotes a pipe-shaped insulating heat insulating member made of asbestos or the like, which is interposed between the inner wall surface 1a of the insulating tube 1 and the fuse element 5 so as to cover the arc extinguishing tube 20. The purpose is to insulate the inner wall surface 1a of the insulating tube 1 of the high-resistance material generated by the arc-extinguishing agent 6 and to ensure the withstand voltage between the silver wire portion 4 and the lower electrode 8 after the low current is cut off. It is something. Note that the insulating heat-insulating member 19 is further interposed between the inner wall surface 1a of the insulating cylinder 1 and the display housing case 13 to cover the housing cylinder 13; The high-resistance material is interposed for heat insulation so that it does not come into contact with the inner wall surface 1a of the insulating cylinder 1. Now, in the fuse with the above configuration, if a fault current flows and it is a large current, the fuse element of the fuse will instantly arc over its entire length, and the generated arc will diffuse into the arc extinguishing agent and cause a high current. A resistive material is produced, which restores the insulation and completes the interruption. In this case, a high-temperature, high-resistance material is generated by the arc and the arc extinguisher, but the resistor material is brought into direct contact with (reaches) the inner wall surface 1a of the insulating cylinder 1 by the insulating heat-insulating member 19. Since this is prevented, the insulating cylinder will not be locally overheated and will therefore not be destroyed by uneven heat. In this case, when the fuse element 5 blows out, the same current flows through the display resistance wire 9 connected in parallel with the fuse element 5 , so the resistance wire 9 subsequently blows out, and as a result, it constantly moves in the pop-out direction. The biased display body 14 is pushed into the display body small hole 16 of the lower cover 16 by the display spring 15.
It pops out from c and indicates a fuse or blown. Furthermore, during display, the locking step portion 14a of the display body 14 is locked in the engagement recess 16c of the lower cover 16, and the display body 14 is prevented from protruding too far. Next, if the fault current is small, the low melting point alloy part 3
The arc extinguishing tube 20 placed over the alloy part 3 is thermally decomposed by the heat generated by the arc to generate arc extinguishing gas, thereby extinguishing the arc and interrupting it. Incidentally, the display body projects in the same manner as above to indicate that the fuse has blown. The present invention has the above configuration, and as a result of attaching the bag-shaped lower cover 16 to cover the conductive plate 17 provided at the lower end of the insulating tube 1, the fuse (tube) can be attached to and removed from the cutout. It can be done safely. In addition, the lower end of the fuse is slightly protruded from the main body of the cut-out (when using the fuse attached to the cut-out, in order to make it easier to see the blown state of the fuse, in a general cut-out, the display side of the fuse is placed in the opening of the main body). ) is also safe.
Further, the lower cover 16, which is attached to cover the live part, is provided with a small hole 16c for a display body located in the center of the rear end 16a, and the small hole 16c
In contrast, the tip 1 is installed inside the display storage case 13.
The tip 1 of the display body 14 in which 4b is formed into a rounded shape
4b is fitted so as not to be exposed outside the lower cover 16, so that the display body 14 is not exposed to the outside of the lower cover 16.
This is a practically effective device because it allows accurate fusing display to be performed without any hindrance to its pop-out operation once it is caught in the indicator hole 16b.
第１図は本考案の実施例を示す全領域形高圧カ
ツトアウト用限流ヒユーズの縦断面図、第２図は
ヒユーズエレメントを示す縦断面図である。
１……絶縁筒、１ａ……内壁面、３……低融点
合金部、４……銀線部、５……ヒユーズエレメン
ト、６……消弧剤、７……上部電極、８……下部
電極、１４……表示体、１４ｂ……先端、１６…
…下部カバー、１６ａ……後端、１６ｃ……表示
体用***、１９……絶縁性断熱部材、２０……消
弧チユーブ。
FIG. 1 is a longitudinal cross-sectional view of a full-area high-voltage cutout current-limiting fuse showing an embodiment of the present invention, and FIG. 2 is a longitudinal cross-sectional view showing a fuse element. DESCRIPTION OF SYMBOLS 1... Insulating cylinder, 1a... Inner wall surface, 3... Low melting point alloy part, 4... Silver wire part, 5 ... Fuse element, 6... Arc extinguishing agent, 7... Upper electrode, 8... Lower part Electrode, 14...Display body, 14b...Tip, 16...
... lower cover, 16a ... rear end, 16c ... small hole for display body, 19 ... insulating heat insulating member, 20 ... arc extinguishing tube.
Claims (1)
して直結した表示用収納ケース１３との外周面に
対し低融点合金部３と銀線部４とを直列に接続し
その低融点合金部３の外周に消弧チユーブ２０を
被せたヒユーズエレメント５をスパイラルに捲回
しさらにこれら巻芯２とヒユーズエレメント５と
を絶縁筒１内に密閉収納しその収納したエレメン
ト５の両端を絶縁筒１の上下に固着した上下部両
電極７，８にそれぞれ接続しさらに絶縁筒１の絶
縁空間１ｂに消弧剤６を充填した全領域形高圧限
流ヒユーズにおいて、上記ヒユーズエレメント５
と下部電極８との間に介在して両者を接続する導
電板１７を絶縁筒１の下端１ｃより下端外面１ｄ
に沿つて設け、該導電板１７を覆うように絶縁筒
１の下端外周面１ｄに袋状の下部カバー１６を被
着すると共に前記カバー１６の後端１６ａの中央
に設けた表示体用***１６ｃに対し、前記収納ケ
ース１３に内装され、飛び出し方向に常時付勢さ
れた表示体１４を、その先端１４ｂが前記カバー
１６外へ露出しない程度に嵌入させたことを特徴
とする全領域形高圧カツトアウト用限流ヒユー
ズ。 The low melting point alloy portion 3 and the silver wire portion 4 are connected in series to the outer peripheral surface of the winding core 2 and the display storage case 13, which is directly connected to the winding core 2 so as to extend in the axial direction. A fuse element 5 with an arc-extinguishing tube 20 placed around the outer periphery of the section 3 is spirally wound, and the winding core 2 and fuse element 5 are hermetically housed in an insulating tube 1, and both ends of the housed element 5 are connected to the insulating tube 1. In the full-area type high-voltage current-limiting fuse, which is connected to both upper and lower electrodes 7 and 8 fixed on the upper and lower sides of the fuse element 5, and further has an arc extinguishing agent 6 filled in the insulating space 1b of the insulating cylinder 1, the above-mentioned fuse element 5
The conductive plate 17 interposed between and the lower electrode 8 to connect them is connected from the lower end 1c of the insulating cylinder 1 to the lower end outer surface 1d.
A bag-shaped lower cover 16 is attached to the outer circumferential surface 1d of the lower end of the insulating cylinder 1 so as to cover the conductive plate 17, and a small hole 16c for display is provided in the center of the rear end 16a of the cover 16. In contrast, there is a full-area type high-voltage cut-out characterized in that the display body 14, which is housed inside the storage case 13 and is always urged in the pop-out direction, is inserted to such an extent that its tip 14b is not exposed to the outside of the cover 16. Limited current fuse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10775285U JPS6328511Y2 (en) | 1985-07-15 | 1985-07-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10775285U JPS6328511Y2 (en) | 1985-07-15 | 1985-07-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6160453U JPS6160453U (en) | 1986-04-23 |
| JPS6328511Y2 true JPS6328511Y2 (en) | 1988-08-01 |
Family
ID=30666976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10775285U Expired JPS6328511Y2 (en) | 1985-07-15 | 1985-07-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6328511Y2 (en) |
-
1985
- 1985-07-15 JP JP10775285U patent/JPS6328511Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6160453U (en) | 1986-04-23 |
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