JPS6340834Y2 - - Google Patents
Info
- Publication number
- JPS6340834Y2 JPS6340834Y2 JP1982048257U JP4825782U JPS6340834Y2 JP S6340834 Y2 JPS6340834 Y2 JP S6340834Y2 JP 1982048257 U JP1982048257 U JP 1982048257U JP 4825782 U JP4825782 U JP 4825782U JP S6340834 Y2 JPS6340834 Y2 JP S6340834Y2
- Authority
- JP
- Japan
- Prior art keywords
- spring
- tripping
- force
- electromagnet
- length
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims 1
- 238000010008 shearing Methods 0.000 claims 1
- 244000208734 Pisonia aculeata Species 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Description
【考案の詳細な説明】
本考案は高速度しや断器（以下単にしや断器と
称す）の引き外し装置の改良に関するもので、そ
の目的とするところは引き戻すためのばねとして
従来取着されていた引き戻し電流値調整のための
動作長さ可調整のばね（以下目盛ばねと称す）の
他に電磁石の吸引力に抗して引き戻す動作長さ固
定の戻しばねを具備し、並列動作としたことにあ
る。[Detailed description of the invention] The present invention relates to an improvement of a tripping device for a high-speed shisha breaker (hereinafter simply referred to as a shiya breaker), and its purpose is to use a conventionally attached spring as a spring for pulling back In addition to a spring with an adjustable length of operation (hereinafter referred to as a scale spring) for adjusting the pullback current value, a return spring with a fixed length of operation that pulls back against the attraction force of the electromagnet is provided, and it can be operated in parallel. It's what I did.
従来、しや断器の引き外し装置は主回路電流を
流す引き外しコイルで引き外し鉄心を励磁し、こ
の電磁力で可動鉄心を吸引し、更にこの可動鉄心
を固着するレバーはリンク機構を働かせ、このリ
ンク機構の作用によつて主回路に設けられて相接
している可動接点と固定接点を開離させ、主回路
電流を断つという事故電流しや断方式である。 Conventionally, the tripping device of a circuit breaker has an accident current breaking method in which a tripping coil through which the main circuit current flows excites a tripping core, which attracts a movable core with this electromagnetic force, and a lever which secures this movable core operates a link mechanism, and the action of this link mechanism separates a movable contact and a fixed contact which are provided in the main circuit and connected to each other, thereby cutting off the main circuit current.
この引き外し装置で可動鉄心が吸引されるの
は、或る設定電流値を越えた過電流が引き外しコ
イルに流れ、その吸引力が可動鉄心を通常（吸引
される前）位置に手き戻すばねの力を上まわつた
場合である。この設定電流値はしや断器の重要な
性能の一つであるから誤差の少ないことが望まし
い。また、リンク機構を働かせる力は
（引き外しコイルの巻数）×（設定電流）
に関係するので、同一形状のしや断器で引き外し
設定電流が異る場合には、コイルの巻数を変えて
使用することが可能である。一方、可動鉄心を引
き外すばねは通常１個で、その長さを変えること
によつて力が変えられるように調整可能な方法で
取付けられている。従つて、所定の設定電流値を
正確に得るために押しねじのねじ込み長さを変え
るなどの方法でばねの長さを微調整している。し
かも押ねじの頭につけられた指針で目盛板に示さ
れた電流位置を指示すれば所定の電流値を自在に
設定することができる。 The reason why the movable iron core is attracted by this tripping device is that an overcurrent exceeding a certain set current value flows through the tripping coil, and the suction force returns the movable iron core to its normal position (before being attracted). This is the case when the force of the spring is exceeded. Since this set current value is one of the important performances of the circuit breaker, it is desirable that the error be small. In addition, the force that activates the link mechanism is related to (number of turns of the tripping coil) x (setting current), so if the tripping setting current is different for a disconnector with the same shape, change the number of turns of the coil. It is possible to use. On the other hand, there is usually only one spring for pulling out the movable core, and it is installed in an adjustable manner so that the force can be changed by changing its length. Therefore, in order to accurately obtain a predetermined set current value, the length of the spring is finely adjusted by changing the threaded length of the push screw. Moreover, by pointing the current position indicated on the scale plate with a pointer attached to the head of the set screw, a predetermined current value can be freely set.
しかるに、設定電流値は用途によつて任意に定
める必要があり、一般に規定の設定値の上下約10
％の調整が必要とされている。例えば、規定の設
定値が1000Aの場合には900A，1100Aにも設定で
きなければならないとされている。一方、引き外
しコイルの巻数が少なく、１ないし２ターンの場
合には巻数の違いによるコイルの吸引力の変化が
大きいので所定の設定値を得るには特性の異なつ
たばねと交換する必要も生じてくる。この場合ば
ね力が大きく、且つ、ばね定数が大きくなると、
ばねの長さのわずかな違いによつてばね力が大き
く変つてくる。このことはばね長さの調整時のわ
ずかなずれによつて設定電流に狂いが生じてくる
ことになる。また、ばねをどのように選定しても
同一形式のしや断器で任意の設定電流が得られな
い場合も出てくる。 However, the set current value must be determined arbitrarily depending on the application, and is generally approximately 10% above or below the specified set value.
% adjustment is required. For example, if the specified setting value is 1000A, it must also be possible to set it to 900A and 1100A. On the other hand, if the number of turns of the tripping coil is small (1 or 2 turns), the attraction force of the coil will change greatly due to the difference in the number of turns, so it may be necessary to replace the spring with a spring with different characteristics in order to obtain the desired set value. It's coming. In this case, if the spring force is large and the spring constant is large,
A slight difference in spring length will result in a large change in spring force. This means that a slight deviation when adjusting the spring length will cause a deviation in the set current. Furthermore, no matter how you select the spring, there will be cases where you will not be able to obtain the desired current setting with the same type of circuit breaker.
依つて、本考案は上記のような問題点を取り除
くために考えられたもので以下、本考案にかかる
しや断器の引き外し装置に関し第１図および第２
図を参照して説明する。 Therefore, the present invention has been devised in order to eliminate the above-mentioned problems, and the following is a description of the breaker tripping device according to the present invention as shown in Figures 1 and 2.
This will be explained with reference to the figures.
第１図は本考案の一実施例を示す引き外し装置
の構成図である。 FIG. 1 is a configuration diagram of a tripping device showing an embodiment of the present invention.
第１図において、１は主回路電流I1によつて引
き外しコイル１ａが磁界をつくり鉄心１ｂを磁化
させる電磁石、２は電磁石１に対向しレバー３に
固着された可動鉄心、４は一端が可動鉄心２に取
着され、他端がしや断器の枠（図示せず）に取着
されて可動鉄心２を引つ張る戻しばね、５は一端
がレバー３に取着され、他端が指針６に取着され
常に圧縮されている目盛ばね、７は指針６を押す
調整ねじである。ここに、従来のものと比較して
本考案のものは戻しばね４が付加されて構成され
ている。 In Fig. 1, 1 is an electromagnet whose tripping coil 1a creates a magnetic field by the main circuit current I1 to magnetize the iron core 1b, 2 is a movable iron core that faces the electromagnet 1 and is fixed to a lever 3, and 4 is a movable iron core whose one end is fixed. A return spring 5 is attached to the movable core 2 and the other end is attached to the frame of the cutter (not shown) to pull the movable core 2; is a scale spring that is attached to the pointer 6 and is constantly compressed, and 7 is an adjustment screw that pushes the pointer 6. Here, compared to the conventional one, the one of the present invention is configured with an additional return spring 4.
ここで、これらの構成において主回路電流I1に
よつて励磁された電磁石１が可動鉄心２を吸引
し、また戻しばね４および目盛ばね５でこの可動
鉄心２を引き戻す。更に指針６を移行させる調整
ねじ７は目盛ばね５の長さを調整する。更に、８
はレバー３を回動可能に軸支するしや断器の枠に
固定されているピン、９はレバー３の回動によつ
てレバー３を有する溝部Ｑから離れるローラ、１
０はローラ９と主回路に流れる電流をしや断する
リンク機構（図示せず）とを連結するピン、１１
は戻しばね４および目盛ばね５による引き戻し位
置を設定するストツパー、１２はストツパー１１
に開設された横長な孔に緩挿され且つしや断器の
枠に固着され、ストツパー１１を固定する固定ね
じ、１３は設定電流値が刻設されている目盛板、
１４は調整ねじ７に係合すると共にしや断器の枠
に固着された支持金具である。 In these configurations, the electromagnet 1 excited by the main circuit current I1 attracts the movable core 2, and the return spring 4 and scale spring 5 pull the movable core 2 back. Furthermore, an adjusting screw 7 for displacing the pointer 6 adjusts the length of the scale spring 5. Furthermore, 8
1 is a pin fixed to the frame of the cutter that rotatably supports the lever 3; 9 is a roller that separates from the groove Q having the lever 3 as the lever 3 rotates; 1;
0 is a pin that connects the roller 9 and a link mechanism (not shown) that cuts off the current flowing in the main circuit; 11;
is a stopper that sets the pullback position by the return spring 4 and the scale spring 5; 12 is a stopper 11;
a fixing screw that is loosely inserted into a horizontally elongated hole made in the hole and fixed to the frame of the cutter to fix the stopper 11; 13 is a scale plate on which a set current value is engraved;
Reference numeral 14 denotes a support fitting that engages with the adjustment screw 7 and is fixed to the frame of the shredder.
次にこれらの動作について説明する。 Next, these operations will be explained.
主回路電流I1で電磁石１は可動鉄心２を吸引し
ようとするとき、可動鉄心２が吸引される吸引力
に抗して、戻しばね４および目盛ばね５は引き戻
す方向に作用する。すなわち、主回路に流れる過
電流の設定値以下では可動鉄心２が吸引されない
ように戻しばね４および目盛ばね５の調整が行わ
れる。この戻しばね４は常に一定の引き戻し力を
可動鉄心２に与えられている。次に、目盛ばね５
の長さは調整ねじ７によつて調整される。すなわ
ち、過電流の設定電流値の上下10％範囲を調整ね
じ７で調整できるようにする。 When the electromagnet 1 attempts to attract the movable core 2 with the main circuit current I 1 , the return spring 4 and the scale spring 5 act in a direction of pulling back against the attraction force that attracts the movable core 2 . That is, the return spring 4 and the scale spring 5 are adjusted so that the movable iron core 2 is not attracted when the overcurrent flowing in the main circuit is less than the set value. This return spring 4 always applies a constant pullback force to the movable iron core 2. Next, scale spring 5
The length of is adjusted by an adjustment screw 7. That is, the adjustment screw 7 can be used to adjust the range of 10% above and below the set current value of the overcurrent.
以上のようにして調整されたしや断器は主回路
に過電流が流れると、電磁石１の吸引する吸引力
によつて可動鉄心２は吸引され、レバー３が矢印
Ａ方向に回動し、レバー３に有すＱ部分からＲ部
分へローラ９が移行し、ローラ９と係合するリン
ク機構が作用して主回路電流を断つことができ
る。 When an overcurrent flows in the main circuit of the breaker adjusted as described above, the movable core 2 is attracted by the attraction force of the electromagnet 1 , and the lever 3 rotates in the direction of arrow A. The roller 9 moves from the Q portion to the R portion of the lever 3, and a link mechanism that engages with the roller 9 acts to cut off the main circuit current.
更に、かかる如くして成る２個のばねについて
特性図を参照して説明する。 Further, two springs constructed in this manner will be explained with reference to characteristic diagrams.
第２図は従来のものと本考案のものとのばねの
一実施例を示す特性図で、縦軸は引き戻し力Ｆを
示し、横軸はばねの長さの変化量Ｌを示す。ここ
で、Ａは従来の引き外し装置による目盛ばね、
Ｂ，Ｃは本考案によるばねでＢは戻しばね、Ｃは
目盛ばね、イは特性Ｂと特性Ｃとの組み合わせ特
性を表わす。 FIG. 2 is a characteristic diagram showing an example of a conventional spring and a spring of the present invention, in which the vertical axis shows the pullback force F, and the horizontal axis shows the amount of change L in the length of the spring. Here, A is a scale spring by a conventional tripping device,
B and C are springs according to the present invention, B is a return spring, C is a scale spring, and A is a combination of characteristics B and C.
かような特性図において引き戻し力をＦとし、
またばねの長さの変化量をＬとして、従来のばね
と本考案による第１図に示すばねとを比較して説
明する。 In such a characteristic diagram, the pullback force is F,
Further, a conventional spring and a spring according to the present invention shown in FIG. 1 will be compared and explained, assuming that the amount of change in length of the spring is L.
特性Ａに示すばねは従来使用されていた目盛ば
ねで、ばねの調整範囲をΔL1変化させると引き戻
し力ＦはΔF変化する。また、本考案による戻し
ばねはＢ特性のもので、ばねの長さが変化するこ
となく一定の引き戻し力F1を示す。更にまた、
Ｂ特性のばねと並列動作を行う目盛ばねはＣ特性
のもので、ばねの長さが変わることによつて引き
戻し力Ｆが変化している。このようなばねの組み
合わせ特性はイ特性のもので、ばねの調整範囲を
ΔL2変わることによつて引き戻し力ＦはΔF変化
する。 The spring shown in characteristic A is a conventionally used scale spring, and when the adjustment range of the spring is changed by ΔL 1 , the pullback force F changes by ΔF. Further, the return spring according to the present invention has characteristic B, and exhibits a constant return force F 1 without changing the length of the spring. Furthermore,
The scale spring that operates in parallel with the spring of characteristic B is of characteristic C, and the pullback force F changes as the length of the spring changes. This combination of springs has characteristic A, and by changing the adjustment range of the spring by ΔL2 , the pullback force F changes by ΔF.
依つて、電磁石の吸引力に抗して引き戻す戻し
ばねを、引き戻し電流値調整のための動作長さ可
調整のばね（目盛ばね）と、動作長さ固定のばね
の並列動作としたことによつて、例えば第２図に
示した如く引き戻し力ＦをΔF変化させたとき、
従来の方式では僅かΔL1の調整範囲であつたもの
が、ΔL2の如く広くとることができ、引き戻し力
Ｆの分解能は向上した。 Therefore, the return spring that pulls back against the attractive force of the electromagnet is operated in parallel with a spring whose operating length is adjustable (scale spring) for adjusting the pullback current value and a spring whose operating length is fixed. For example, when the pullback force F is changed by ΔF as shown in Fig. 2,
In the conventional method, the adjustment range was only ΔL 1 , but it can be adjusted as wide as ΔL 2 , and the resolution of the pullback force F has been improved.
以上、本考案にかかる高速度しや断器の引き外
し装置は、引き外しコイルのターン数が少ないと
き一個のばねで調整が行われていたために、ばね
の長さを調整するとき僅かなずれによつて設定電
流の値が移動したりまた、ばねをどのように選定
しても同一形式の高速度しや断器で任意の設定電
流が得られないときがあるなどかかる欠点を取り
除くことができる。更に本考案によれば引き外し
目盛の設定電流値の誤差を少なくし、また引き戻
し力の微調整が可能となり、更に２個のばねの組
み合わせによつて幅広い調整ができ同一形式の高
速度しや断器で各種の引き外し設定値をもつもの
をシリーズ設計することが可能となる。 As described above, in the high-speed disconnection device of the present invention, when the number of turns of the tripping coil is small, adjustment is performed with a single spring, so when adjusting the length of the spring, a slight deviation occurs. It is possible to eliminate such drawbacks, such as the value of the set current changing depending on the spring, or the fact that no matter how you select the spring, you may not be able to obtain the desired set current with a high-speed disconnector of the same type. can. Furthermore, according to the present invention, it is possible to reduce the error in the set current value of the tripping scale, and to finely adjust the pulling force.Furthermore, by combining two springs, a wide range of adjustment can be made. It becomes possible to design a series of disconnectors with various trip setting values.
第１図は本考案にかかる高速度しや断器の引き
外し装置の一実施例を示す構成図、第２図は従来
のばねと本考案にかかるばねの一実施例を示す特
性図である。
１……電磁石、１ａ……引き外しコイル、１ｂ
……鉄心、２……可動鉄心、３……レバー、４…
…戻しばね、５……引き戻し電流値調整ばね（目
盛ばね）。
Fig. 1 is a configuration diagram showing an embodiment of a high-speed shield breaker tripping device according to the present invention, and Fig. 2 is a characteristic diagram showing an embodiment of a conventional spring and a spring according to the present invention. . 1 ...Electromagnet, 1a...Trip coil, 1b
...Iron core, 2...Movable iron core, 3...Lever, 4...
...Return spring, 5...Return current value adjustment spring (scale spring).
Claims (1)
鉄心を励磁し引き外し電磁石の吸引力でばね力に
抗して可動鉄心を引きつけてレバーを外すことに
よりしや断作用する高速度しや断器において、前
記電磁石の吸引力に抗して引き戻す戻しばねを、
引き外し電流値調整のための動作長さ可調整のば
ねと、動作長さ固定のばねで一定の引き戻し力を
出す戻しばねとを併用することにより、引き外し
目標の分解能を高めたことを特徴とする高速度し
や断器の引き外し装置。 In high-speed breakers where the tripping iron is excited by the main circuit current flowing through the tripping coil, the movable iron core is attracted against the spring force by the attraction force of the tripping electromagnet, and the lever is released to cause shearing. , a return spring that pulls back against the attractive force of the electromagnet,
It is characterized by improved resolution of the tripping target by using a spring with adjustable operating length to adjust the tripping current value, and a return spring with a fixed operating length that provides a constant pulling force. A high-speed disconnector tripping device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4825782U JPS58152738U (en) | 1982-04-05 | 1982-04-05 | High-speed disconnection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4825782U JPS58152738U (en) | 1982-04-05 | 1982-04-05 | High-speed disconnection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58152738U JPS58152738U (en) | 1983-10-13 |
| JPS6340834Y2 true JPS6340834Y2 (en) | 1988-10-25 |
Family
ID=30059188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4825782U Granted JPS58152738U (en) | 1982-04-05 | 1982-04-05 | High-speed disconnection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58152738U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4634493B2 (en) * | 2008-09-29 | 2011-02-16 | 株式会社日立製作所 | Gas circuit breaker for electric power |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5551877B2 (en) * | 1972-10-13 | 1980-12-26 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6230264Y2 (en) * | 1978-10-03 | 1987-08-04 |
-
1982
- 1982-04-05 JP JP4825782U patent/JPS58152738U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5551877B2 (en) * | 1972-10-13 | 1980-12-26 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58152738U (en) | 1983-10-13 |
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