JP5170656B2 - Overcurrent trip mechanism - Google Patents

Overcurrent trip mechanism Download PDF

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JP5170656B2
JP5170656B2 JP2008097000A JP2008097000A JP5170656B2 JP 5170656 B2 JP5170656 B2 JP 5170656B2 JP 2008097000 A JP2008097000 A JP 2008097000A JP 2008097000 A JP2008097000 A JP 2008097000A JP 5170656 B2 JP5170656 B2 JP 5170656B2
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bimetal
pole
tripping mechanism
overcurrent tripping
circuit
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JP2009252438A (en
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徹郎 柴田
啓太 清水
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河村電器産業株式会社
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Description

本発明は、回路遮断器における過電流引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湾曲方向に一列に並べ、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. A bimetal with one end fixed and the other end freely provided, and a latching piece that is pressed and driven by the bending of the bimetal. The bimetal provided for each pole is arranged in a line in the bending direction, and the movement is interlocked by an interlocking member. It has been made.

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。 Embodiments of the present invention will be described below.
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. In addition, 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. 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.

２１、３１、４１ Ｌ１極バイメタル
２２、３２ Ｌ２極バイメタル
２３、３３、４３ 掛合片
２４、３４ 連動部材
２５ 押圧部
２６ 軸部 21, 31, 41 L1 pole bimetal
22, 32 L2 pole bimetal
23, 33, 43 hanging pieces
24, 34 interlocking member
25 pressing 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湾曲方向に一列に並べ、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 bending of the bimetal, wherein the bimetals provided for each pole are arranged in a line in the bending direction, and the movement is interlocked by an interlocking member.
JP2008097000A 2008-04-03 2008-04-03 Overcurrent trip mechanism Active JP5170656B2 (en)

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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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