JP2009252438A - Excess current tripping arrangement - Google Patents

Excess current tripping arrangement Download PDF

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JP2009252438A
JP2009252438A JP2008097000A JP2008097000A JP2009252438A JP 2009252438 A JP2009252438 A JP 2009252438A JP 2008097000 A JP2008097000 A JP 2008097000A JP 2008097000 A JP2008097000 A JP 2008097000A JP 2009252438 A JP2009252438 A JP 2009252438A
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bimetal
pole
tripping mechanism
bimetals
pole bimetal
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JP5170656B2 (en
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Tetsuo Shibata
徹郎 柴田
Keita Shimizu
啓太 清水
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Kawamura Electric Inc
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Kawamura Electric Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an excess current tripping arrangement prepared in the inside of a case of a circuit breaker unit, wherein the excess current tripping arrangement includes two or more bimetals which are formed from a long plate with one end fixed and the other end not fixed and a suspending strip which is pressure-driven by curving the bimetals, and the bimetals prepared for each pole are moved in an interlocking manner by an interlocking member. <P>SOLUTION: The excess current tripping arrangement prepared in the inside of a case of a circuit breaker unit includes: two or more bimetals which are formed from a long plate with one end fixed and the other end not fixed; and a suspending strip which is pressure-driven by curving the bimetals. The bimetals prepared for each pole are moved in an interlocking manner by an interlocking member. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、回路遮断器における過電流引き外し機構に関するものである。   The present invention relates to an overcurrent tripping mechanism in a circuit breaker.

従来、過電流引き外し機構を用いた回路遮断器には特許文献１に記載されているような、主回路に過電流、短絡、漏電等の異常が発生した場合はＬ１極バイメタル４１及びＬ２極バイメタルと掛合片４３とからなる引き外し機構が駆動して開閉機構部による可動接触子への押圧を解除し、バネにより固定接触子から可動接触子を開離させて主回路が遮断するようになっている回路遮断器があった。
特開２００４−５５１７３ Conventionally, circuit breakers using an overcurrent tripping mechanism have L1 pole bimetal 41 and L2 pole when abnormalities such as overcurrent, short circuit, and electric leakage occur in the main circuit as described in Patent Document 1. The tripping mechanism composed of the bimetal and the engagement piece 43 is driven to release the pressing to the movable contact by the opening / closing mechanism, and the main circuit is shut off by separating the movable contact from the fixed contact by the spring. There was a circuit breaker.
JP 2004-55173 A

しかしながら、特許文献１に記載の発明では、回路遮断器の本体内部に設けられる過電流引き外し機構において、バイメタルがそれぞれの極に対して設けられているため、回路を遮断するまでの時間にばらつきが発生するという欠点がある。   However, in the invention described in Patent Document 1, in the overcurrent tripping mechanism provided inside the main body of the circuit breaker, since the bimetal is provided for each pole, the time until the circuit is cut off varies. There is a disadvantage that occurs.

又、バイメタルがそれぞれの極に設けられているため、回路が遮断されるまでの時間を調整する際には、極ごとのバイメタルをそれぞれの調整ネジによって調整する必要があるため、作業効率の低下に繋がるという欠点がある。   In addition, since bimetal is provided at each pole, when adjusting the time until the circuit is cut off, it is necessary to adjust the bimetal for each pole with each adjustment screw, resulting in reduced work efficiency. There is a disadvantage that it leads to.

このため、本発明によって解決しようとする課題は、極ごとにバイメタルが設けられている場合において、回路を遮断するまでの時間のばらつきが少なく、調整する際であっても、作業効率を低下させる恐れの少ない過電流引外し機構を提供することにある。   For this reason, the problem to be solved by the present invention is that, when a bimetal is provided for each pole, there is little variation in the time until the circuit is shut off, and the work efficiency is lowered even during adjustment. The object is to provide an overcurrent tripping mechanism with less fear.

上記した課題を解決するためになされた本発明の過電流引外し機構は、回路遮断器のケース内部に設けられる過電流引き外し機構であって、過電流引き外し機構は長板から形成されると共に一端を固定し、他端を自由に設けてなるバイメタルと、バイメタルの湾曲によって押圧駆動する掛合片とからなり、極ごとに設けられるバイメタルを連動部材によって動きを連動させたものである。   The overcurrent tripping mechanism of the present invention made to solve the above-described problem is an overcurrent tripping mechanism provided inside a case of a circuit breaker, and the overcurrent tripping mechanism is formed from a long plate. In addition, a bimetal having one end fixed and the other end freely provided, and a hook piece that is pressed and driven by the bimetal curve, the movement of the bimetal provided for each pole is interlocked by an interlocking member.

本発明の過電流引外し機構によれば、複数のバイメタルを連動部材によって動きを連動させることで、極ごとのバイメタルによる電路の遮断までの時間のばらつきをなくすことが可能である。   According to the overcurrent tripping mechanism of the present invention, it is possible to eliminate variations in time until the electric circuit is interrupted by the bimetal for each pole by interlocking the movement of the plurality of bimetals with the interlocking member.

又、極ごとに設けられたバイメタルによる電路の遮断までの時間のばらつきをなくすためにそれぞれに設けられた調整ネジを調整する作業が必要なくなり、作業効率の向上を図ることが可能である。   In addition, it is not necessary to adjust the adjusting screw provided for each of the poles in order to eliminate the variation in time until the electric circuit is interrupted by the bimetal, and the working efficiency can be improved.

本発明では、電路の遮断までの時間を一定に得られる構造を少ない部品数で可能にした。   In the present invention, a structure that can obtain a constant time until interruption of the electric circuit can be obtained with a small number of parts.

以下、本発明の実施の形態を説明する。
回路遮断器のケース内部に設けられる過電流引外し機構であって、過電流引外し機構は長板から形成されると共に負荷座に固定される接続座に一端を固定し、他端を自由に設けてなるＬ１極バイメタル１及びＬ２極バイメタル２と、Ｌ１極バイメタル１及びＬ２極バイメタル２の湾曲によって押圧駆動する掛合片３とからなり、Ｌ１極バイメタル１とＬ２極バイメタル２を連動部材４によって動きを連動させた。連動部材４はＬ１極バイメタル１及びＬ２極バイメタル２を嵌め合わせるための孔部を設けた。これにより、Ｌ１極バイメタル１及びＬ２極バイメタル２による電路の遮断までの時間のばらつきをなくすことが可能である。又、Ｌ１極バイメタル１及びＬ２極バイメタル２による電路の遮断までの時間のばらつきをなくすためにそれぞれに設けられた調整ネジを調整する作業が必要なくなり、作業効率の向上を図ることが可能である。 Embodiments of the present invention will be described below.
An overcurrent tripping mechanism provided inside the case of the circuit breaker, wherein the overcurrent tripping mechanism is formed of a long plate and fixes one end to a connection seat fixed to a load seat and the other end freely. The L1 pole bimetal 1 and the L2 pole bimetal 2 are provided, and the latch piece 3 that is pressed and driven by the bending of the L1 pole bimetal 1 and the L2 pole bimetal 2. The movement was linked. The interlocking member 4 is provided with a hole for fitting the L1 pole bimetal 1 and the L2 pole bimetal 2 together. Thereby, it is possible to eliminate variations in time until the electric circuit is interrupted by the L1 pole bimetal 1 and the L2 pole bimetal 2. In addition, it is not necessary to adjust the adjustment screws provided in order to eliminate variations in time until the electric circuit is interrupted by the L1 pole bimetal 1 and the L2 pole bimetal 2, and the work efficiency can be improved. .

回路遮断器のケース内部に設けられる過電流引外し機構であって、過電流引外し機構は長板から形成されると共に負荷座に固定される接続座に一端を固定し、他端を自由に設けてなるＬ１極バイメタル１１及びＬ２極バイメタル１２と、Ｌ１極バイメタル１１及びＬ２極バイメタル１２の湾曲によって押圧駆動する掛合片１３とからなり、Ｌ１極バイメタル１１とＬ２極バイメタル１２を連動部材１４によって動きを連動させた。連動部材１４はＬ１極バイメタル１１及びＬ２極バイメタル１２を嵌め合わせるための孔部と、掛合片１３を押圧するするための押圧部１５とを設けた。これにより、Ｌ１極バイメタル１１及びＬ２極バイメタル１２による電路の遮断までの時間のばらつきをなくすことが可能である。又、Ｌ１極バイメタル１１及びＬ２極バイメタル１２による電路の遮断までの時間のばらつきをなくすためにそれぞれに設けられた調整ネジを調整する作業が必要なくなり、作業効率の向上を図ることが可能である。   An overcurrent tripping mechanism provided inside the case of the circuit breaker, wherein the overcurrent tripping mechanism is formed of a long plate and fixes one end to a connection seat fixed to a load seat and the other end freely. The L1 pole bimetal 11 and the L2 pole bimetal 12 are provided, and the engaging piece 13 is pressed and driven by the curvature of the L1 pole bimetal 11 and the L2 pole bimetal 12. The L1 pole bimetal 11 and the L2 pole bimetal 12 are connected by the interlocking member 14. The movement was linked. The interlocking member 14 is provided with a hole portion for fitting the L1 pole bimetal 11 and the L2 pole bimetal 12 and a pressing portion 15 for pressing the engaging piece 13. Thereby, it is possible to eliminate variations in time until the electric circuit is interrupted by the L1 pole bimetal 11 and the L2 pole bimetal 12. In addition, it is not necessary to adjust the adjustment screws provided in order to eliminate variations in time until the electric circuit is interrupted by the L1 pole bimetal 11 and the L2 pole bimetal 12, and it is possible to improve the work efficiency. .

回路遮断器のケース内部に設けられる過電流引外し機構であって、過電流引外し機構は長板から形成されると共に一端を負荷座に固定される接続座と一体とし、他端を自由に設けてなるＬ１極バイメタル２１及びＬ２極バイメタル２２と、Ｌ１極バイメタル２１及びＬ２極バイメタル２２の湾曲によって押圧駆動する掛合片２３とからなり、Ｌ１極バイメタル２１を掛合片２３に近い位置に、Ｌ２極バイメタル２２を掛合片２３から遠い位置にそれぞれ湾曲方向に一列に並べ、Ｌ１極バイメタル２１及びＬ２極バイメタル２２の間に連動部材２４を設けることによって動きを連動させた。Ｌ１極バイメタル２１及びＬ２極バイメタル２２の間に設けた連動部材２４は、Ｌ１極バイメタル２１及びＬ２極バイメタル２２との当接面に押圧部２５を設け、略中央に軸部２６を設けて回動可能とし、Ｌ２極バイメタル２２が湾曲した際には連動部材２４によってＬ１極バイメタル２１を押して掛合片２３を回動させる。これにより、Ｌ１極バイメタル２１及びＬ２極バイメタル２２による電路の遮断までの時間のばらつきをなくすことが可能である。又、Ｌ１極バイメタル２１及びＬ２極バイメタル２２を湾曲方向に一列に並べる構造であるため、回路遮断器自体を薄くすることが可能である。又、Ｌ１極バイメタル２１及びＬ２極バイメタル２２による電路の遮断までの時間のばらつきをなくすためにそれぞれに設けられた調整ネジを調整する作業が必要なくなり、作業効率の向上を図ることが可能である。   An overcurrent tripping mechanism provided inside the case of the circuit breaker, the overcurrent tripping mechanism is formed of a long plate and one end is integrated with a connection seat fixed to the load seat, and the other end is freely set The L1 pole bimetal 21 and the L2 pole bimetal 22 are provided, and a latch piece 23 that is pressed and driven by the curvature of the L1 pole bimetal 21 and the L2 pole bimetal 22, and the L1 pole bimetal 21 is located at a position close to the latch piece 23. The polar bimetals 22 were arranged in a line in the bending direction at positions far from the engaging piece 23, and the interlocking member 24 was provided between the L1 polar bimetal 21 and the L2 polar bimetal 22 to synchronize the movements. The interlocking member 24 provided between the L1 pole bimetal 21 and the L2 pole bimetal 22 is provided with a pressing portion 25 on the contact surface with the L1 pole bimetal 21 and the L2 pole bimetal 22 and provided with a shaft portion 26 at substantially the center. When the L2 pole bimetal 22 is curved, the interlocking member 24 pushes the L1 pole bimetal 21 to rotate the engaging piece 23. Thereby, it is possible to eliminate variations in time until the electric circuit is interrupted by the L1 pole bimetal 21 and the L2 pole bimetal 22. Further, since the L1 pole bimetal 21 and the L2 pole bimetal 22 are arranged in a line in the bending direction, the circuit breaker itself can be made thin. In addition, it is not necessary to adjust the adjustment screws provided in order to eliminate variations in time until the electric circuit is interrupted by the L1 pole bimetal 21 and the L2 pole bimetal 22, and it is possible to improve the work efficiency. .

回路遮断器のケース内部に設けられる過電流引外し機構であって、過電流引外し機構は長板から形成されると共に一端を負荷座に固定される接続座と一体とし、他端を自由に設けてなるＬ１極バイメタル３１及びＬ２極バイメタル３２と、Ｌ１極バイメタル３１及びＬ２極バイメタル３２の湾曲によって押圧駆動する掛合片３３とからなり、Ｌ１極バイメタル３１を掛合片３３に近い位置に、Ｌ２極バイメタル３２を掛合片３３から遠い位置にそれぞれ湾曲方向に一列に並べ、Ｌ１極バイメタル３１及びＬ２極バイメタル３２の間に連動部材３４を設けることによってＬ１極バイメタル３１及びＬ２極バイメタル３２の動きを連動させた。Ｌ１極バイメタル３１及びＬ２極バイメタル３２の間に設けた連動部材３４は、一面を切り欠いて切欠部を設けた箱体であって、切欠部と逆の位置に嵌合部を設けてなり、Ｌ２極バイメタルに嵌合部を嵌め合わせ、Ｌ１極バイメタルを切欠部に嵌め合わせる。これにより、Ｌ１極バイメタル３１及びＬ２極バイメタル３２の動きを連動させ、Ｌ１極バイメタル３１及びＬ２極バイメタル３２による電路の遮断までの時間のばらつきをなくすことが可能である。又、Ｌ１極バイメタル３１及びＬ２極バイメタル３２を湾曲方向に一列に並べる構造であるため、回路遮断器自体を薄くすることが可能である。又、Ｌ１極バイメタル３１及びＬ２極バイメタル３２による電路の遮断までの時間のばらつきをなくすためにそれぞれに設けられた調整ネジを調整する作業が必要なくなり、作業効率の向上を図ることが可能である。   An overcurrent tripping mechanism provided inside the case of the circuit breaker, the overcurrent tripping mechanism is formed of a long plate and one end is integrated with a connection seat fixed to the load seat, and the other end is freely set The L1 pole bimetal 31 and the L2 pole bimetal 32 provided, and a latch piece 33 that is pressed and driven by the curvature of the L1 pole bimetal 31 and the L2 pole bimetal 32, the L1 pole bimetal 31 is located at a position close to the latch piece 33. The pole bimetal 32 is arranged in a line in a curved direction at a position far from the engagement piece 33, and the interlocking member 34 is provided between the L1 pole bimetal 31 and the L2 pole bimetal 32, thereby moving the L1 pole bimetal 31 and the L2 pole bimetal 32. Interlocked. The interlocking member 34 provided between the L1 pole bimetal 31 and the L2 pole bimetal 32 is a box having a notch portion cut out on one surface, and a fitting portion is provided at a position opposite to the notch portion, The fitting part is fitted to the L2 pole bimetal, and the L1 pole bimetal is fitted to the notch. Thereby, the movement of the L1 pole bimetal 31 and the L2 pole bimetal 32 can be interlocked, and it is possible to eliminate variations in time until the electric circuit is interrupted by the L1 pole bimetal 31 and the L2 pole bimetal 32. Further, since the L1 pole bimetal 31 and the L2 pole bimetal 32 are arranged in a line in the bending direction, the circuit breaker itself can be made thin. In addition, it is not necessary to adjust the adjustment screws provided in order to eliminate variations in the time until the electric circuit is cut off by the L1 pole bimetal 31 and the L2 pole bimetal 32, and it is possible to improve the work efficiency. .

以上のように、本発明の過電流引外し機構は、回路遮断器のケース内部に設けられる極ごとのバイメタルを連動部材によって動きを連動させることで、極ごとのバイメタルによる電路の遮断までの時間のばらつきをなくすことが可能となるものである。   As described above, the overcurrent tripping mechanism of the present invention has a time until the circuit is interrupted by the bimetal for each pole by linking the movement of the bimetal for each pole provided in the case of the circuit breaker by the interlocking member. It is possible to eliminate the variation in the above.

本発明の実施例１における、過電流引外し機構の斜視図である。It is a perspective view of an overcurrent tripping mechanism in Example 1 of the present invention. 本発明の実施例２における、過電流引外し機構の斜視図である。It is a perspective view of the overcurrent tripping mechanism in Example 2 of the present invention. 本発明の実施例３における、過電流引外し機構の斜視図である。It is a perspective view of the overcurrent tripping mechanism in Example 3 of the present invention. 本発明の実施例４における、過電流引外し機構の斜視図である。It is a perspective view of the overcurrent tripping mechanism in Example 4 of the present invention. 従来技術における、特許文献１に記載の過電流引外し機構の断面図である。It is sectional drawing of the overcurrent trip mechanism of patent document 1 in a prior art.

符号の説明Explanation of symbols

１、１１、２１、３１、４１ Ｌ１極バイメタル
２、１２、２２、３２ Ｌ２極バイメタル
３、１３、２３、３３、４３ 掛合片
４、１４、２４、３４ 連動部材
１５、２５ 押圧部
２６ 軸部 1, 11, 21, 31, 41 L1 pole bimetal 2, 12, 22, 32 L2 pole bimetal 3, 13, 23, 33, 43 Engagement piece 4, 14, 24, 34 Interlocking member 15, 25 Press part 26 Shaft part

Claims (1)

回路遮断器のケース内部に設けられる過電流引き外し機構であって、該過電流引き外し機構は長板から形成されると共に一端を固定し、他端を自由に設けてなる複数のバイメタルと、該バイメタルの湾曲によって押圧駆動する掛合片とからなり、極ごとに設けられる前記バイメタルを連動部材によって動きを連動させたことを特徴とする過電流引き外し機構。   An overcurrent tripping mechanism provided inside the case of the circuit breaker, wherein the overcurrent tripping mechanism is formed of a long plate and has one end fixed, and a plurality of bimetals provided with the other end freely provided, An overcurrent tripping mechanism comprising an engaging piece that is pressed and driven by the bending of the bimetal, and the movement of the bimetal provided for each pole is interlocked by an interlocking member.
JP2008097000A 2008-04-03 2008-04-03 Overcurrent trip mechanism Active JP5170656B2 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4934104B1 (en) * 1969-12-10 1974-09-11
JPS59195654U (en) * 1983-06-15 1984-12-26 松下電工株式会社 Breaker arc extinguishing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4934104B1 (en) * 1969-12-10 1974-09-11
JPS59195654U (en) * 1983-06-15 1984-12-26 松下電工株式会社 Breaker arc extinguishing device

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