KR20090011292A - Over current breaker - Google Patents

Over current breaker Download PDF

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Publication number
KR20090011292A
KR20090011292A KR1020070074734A KR20070074734A KR20090011292A KR 20090011292 A KR20090011292 A KR 20090011292A KR 1020070074734 A KR1020070074734 A KR 1020070074734A KR 20070074734 A KR20070074734 A KR 20070074734A KR 20090011292 A KR20090011292 A KR 20090011292A
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KR
South Korea
Prior art keywords
contact
arc
runner
movable contact
overcurrent
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KR1020070074734A
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Korean (ko)
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KR100926646B1 (en
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정연태
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태성전기(주)
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Priority to KR1020070074734A priority Critical patent/KR100926646B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/06—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by current falling below a predetermined value
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/04—Contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/20—Terminals; Connections
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/38—Auxiliary contacts on to which the arc is transferred from the main contacts

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  • Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

An over current breaker is provided to prevent damage due to the arc, generated from the contact or separation of a movable contact and fixture contact, flying by guiding arc to upside through a bend runner. An overcurrent breaker for the cabinet panel comprises a movable contact(23), an open and close device part(13) and an operation lever(21). The contact point of the movable contact is switched to an input side terminal(16) and a load side terminal(17). A bimetal(19) pulls back the operation lever, and the operation lever operates the open and close device part. The bend runner(24) is fixed to the leading end of the movable contact into one body. A projection is formed on the top of the contact point of the movable contact and it passes through the bend runner and movable contact.

Description

분전반용 과전류 차단기{Over Current Breaker}Over Current Breaker for Power Distribution Board

본 발명은 분전반용 과전류 차단기에 관한 것으로 특히 가정이나 업소에서 사용되는 비교적 용량이 작은 분전반용 과전류 차단기에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to overcurrent circuit breakers for distribution panels, and more particularly to overcurrent circuit breakers for relatively small capacity distribution panels used in homes and businesses.

주지하는 바와 같이 종래의 과전류 차단기의 가동 접점에서는 부하전류가 흐르고 있는 상태에서 접점이 오프 됨에 따라 아크가 발생하고, 이러한 고온의 아크는 직전의 전압과 전류의 적으로 많은 에너지가 수천도 이상 높은 온도의 금속증기로 열전리되면서 접점, 절연물 등에 비산되므로, 접점 및 절연물이 소손되거나 손상되는 사례가 빈번하였던 문제점이 있었다.As is well known, in the movable contact of the conventional overcurrent circuit breaker, an arc occurs as the contact is turned off while the load current is flowing, and such a high temperature arc is a temperature in which a lot of energy of the previous voltage and current is higher than thousands of degrees. Since it is scattered to the contact, the insulator and the like while thermally ionized by the metal vapor of the, there was a problem that the contact and the insulator were damaged or damaged frequently.

그러므로, 이러한 아크를 소멸시키기 위하여 소호실 내에 소호 그리드를 설 치하는 것이 일반적이며, 이러한 아크를 소호실로 안내하기 위하여 런너(runner)를 사용하게 된다.Therefore, it is common to install a arc grid in the arc chamber to extinguish such arcs, and a runner is used to guide the arc into the arc chamber.

이러한 런너의 대표적인 예를 대한민국 실용신안 등록 제 0051475호(고안의 명칭: 회로차단기; 이하 '인용고안'이라 함)에 의하여 살펴볼 수 있다.A representative example of such a runner can be seen by Korean Utility Model Registration No. 0051475 (designation name: circuit breaker; hereinafter referred to as 'quote design proposal').

이는 도 1, 2로 도시한 바와 같이, 개폐기구에 연결된 가동접촉자(102), 이 가동접촉자(102)에 대향배치된 고정접촉자(103), 이 가동접촉자(102)와 고정접촉자(103)의 사이에 생기는 아크를 소호시키는 소호실(104)및 상기 고정접촉자(103)에 하나의 리베트(106)로 고착되어 아크를 상기 소호실(104)로 인도하는 아크런너(105)로 구성된 것이다.1 and 2, the movable contactor 102 connected to the opening and closing mechanism, the fixed contactor 103 disposed to face the movable contactor 102, and the movable contactor 102 and the fixed contactor 103. It consists of an arc runner 105 for arcing between the arcing chamber 104 and the stationary contact 103 with one rivet 106 to guide the arc to the arcing chamber 104.

이에 따라, 인용고안은 아크런너(105)에 의하여 아크가 소호실(104)로 안내되어 소호 그리드에 의하여 소멸되며, 유공절연격벽(107)을 통하여 외부로 배출되면서 주위에 무질서하게 비산하여 주위의 부품을 용융시키는 것을 방지하기 위한 것이며 상부에는 가스배출용 배기공(108)이 형성되어 있어서, 팽창된 가스가 원활하게 배출될 수 있는 것이다.Accordingly, the cited proposal is guided by the arc runner 105 arc extinguishing chamber 104 is extinguished by the extinguishing grid, and discharged to the outside through the perforated insulating bulkhead 107 and scattered around the chaotic disorder around It is to prevent the component from melting and the exhaust gas 108 for gas discharge is formed at the top thereof, so that the expanded gas can be smoothly discharged.

이러한 종래의 아크런너(105)는 모두가 하방의 고정접촉자(103)에 설치된 것이며, 아크 발생 시 상방의 소호실로 안내되도록 하기 위하여 상방으로 향하여 절곡된 형태로 된 것이다.The conventional arc runner 105 is all installed in the lower fixed contact 103, it is in the form of bent upwards in order to be guided to the upper extinguishing chamber when the arc is generated.

그러므로, 전류의 단속과정에서 발생되는 아크는 모두 상방으로 비산되며, 상당부분은 소호실로 이동하나, 일부는 가동접촉자의 접점과 개폐 기구부로도 비산되어 가동접점을 손상시키거나 개폐 기구부 및 바이메탈을 손상시켜 작동 불능의 심각한 고장을 야기하게 되는 문제점이 있는 것이다.Therefore, the arcs generated during the interruption of the current are all scattered upwards, and a large part of them move to the arc extinguishing chamber. There is a problem that causes a serious failure of the operation.

본 발명의 목적은 이러한 문제점을 해결하기 위하여 과전류 차단기의 접점에서 발생하는 아크가 직상방으로 상승하도록 안내하여 가동접촉자나 개폐기구부가 아크로 인한 피해를 받지 않도록 한 분전반용 과전류 차단기를 제공함에 있다.It is an object of the present invention to provide an overcurrent breaker for a distribution panel in which an arc generated at a contact point of an overcurrent breaker rises upward in order to solve such a problem so that the movable contactor or the switch mechanism is not damaged by an arc.

본 발명은 이러한 목적을 달성하기 위하여 본체의 내부에 입력측 단자와 부하측 단자를 단속하는 가동접촉자의 접점과, 고정접촉자의 접점을 단속시키는 개폐기구부와, 바이메탈에 의하여 후퇴되며 개폐기구부를 작동시키는 작동레버로 된 공지의 과전류 차단기에 있어서, 가동접촉자의 선단에 접점과 함께 절곡 런너가 일체로 고정되도록 하여서 된 분전반용 과전류 차단기를 제안한다.The present invention provides a contact of the movable contact for regulating the input terminal and the load-side terminal in the interior of the main body, the opening and closing mechanism for regulating the contact of the fixed contact, and the operation lever for retracting and operating the opening and closing mechanism by bimetal In the known overcurrent circuit breaker, an overcurrent circuit breaker for a distribution panel is proposed in which a bent runner is integrally fixed together with a contact at the tip of the movable contactor.

이와 같이 하여 본 발명은 개폐기구부를 수조작하거나 이상 과전류의 발생으로 인하여 바이메탈이 작동하여 가동접촉자의 접점이 고정접촉자의 접점에서 분리되거나 접촉되는 과정에서 발생하는 아크가 절곡런너에 의하여 직상방으로 수직 상승하여 유공절연격벽을 통하여 외부로 배출되는 것이다.Thus, in the present invention, the arc generated in the process of separating or contacting the contact of the movable contactor by the bimetal is operated due to the manual operation of the switch mechanism part or the occurrence of abnormal overcurrent is vertically upward by the bending runner. It rises and is discharged to the outside through the hole insulation partition.

이에 따라, 본 발명은 가동접촉자 및 개폐기구부 그리고 바이메탈이 아크에 의하여 손상됨을 방지할 수 있게 되는 것이어서, 아크 비산으로 인한 고장 발생을 방지하여 수명 단축을 방지할 수 있게 되는 유용한 효과가 있다.Accordingly, the present invention is to prevent the movable contact, the opening and closing mechanism and the bimetal from being damaged by the arc, there is a useful effect that can prevent the occurrence of failure due to the scattering of the arc to prevent shortening of life.

이러한 본 발명을 첨부된 도면을 참조하여 더욱 상세히 설명하면 다음과 같다. 본 발명의 구체적인 구성을 도 3으로 도시하였다. 이에서 볼 수 있는 바와 같이, 본 발명은 본체(11)의 내부에 입력측 단자(16)와 부하측 단자(17)를 단속하는 가동접촉자(23)의 접점(18)과, 고정접촉자(25)의 접점(28)을 차단 또는 접속시키는 개폐기구부(13)와, 바이메탈(19)에 의하여 후퇴되며 개폐기구부(13)를 작동시키는 작동레버(21)로 된 공지의 분전반용 과전류 차단기에 있어서, 가동접촉자(23)의 선단에 접점(18)과 함께 절곡 런너(24)가 일체로 고정되도록 한 것이며, 고정을 위하여 도 6, 7로 보인 바와 같이 접점(18)의 상방으로 형성된 돌기부(22)가 런너(24)와 가동접촉자(23)를 관통하고, 그 상방에서 타격하여 돌기부(22) 상단이 전개부(29)로 되어 일체로 견고하게 고정된 것이다.Referring to the present invention in more detail with reference to the accompanying drawings as follows. 3 illustrates a specific configuration of the present invention. As can be seen from this, according to the present invention, the contact 18 and the fixed contact 25 of the movable contact 23 for controlling the input terminal 16 and the load terminal 17 inside the main body 11 are separated. In a known distribution panel overcurrent circuit breaker comprising an opening / closing mechanism portion 13 for blocking or connecting a contact 28 and an operating lever 21 for retreating by the bimetal 19 and operating the opening / closing mechanism portion 13, a movable contactor The bent runner 24 is integrally fixed together with the contact 18 at the tip of the 23, and as shown in FIGS. 6 and 7, the protrusion 22 formed above the contact 18 is fixed to the runner. It penetrates through the 24 and the movable contact 23, and strikes from the upper side thereof, and the upper end of the protruding portion 22 becomes the developing portion 29, thereby being fixed firmly and integrally.

이와 같이 된 본 발명은 도 4로 보인 바와 같이 입력측 단자와 고정접촉자(25) 그리고 접점(18) 및 접점(28) 그리고 가동접촉자(23) 그리고 바이메탈(19) 및 출력측 단자(17)를 거쳐서 전류가 흐르게 된다. 이러한 과정에서 과전류가 흐르거나 개폐기구부(13)를 조작하게 되면 도 5로 보인 바와 같이, 가동접촉자(23)가 개폐기구부(13)에 의하여 상방으로 들려지게 되며, 이때 접점(18, 28)을 통하여 흐르던 많은 대전류가 일시에 차단됨에 따라 직전에 흐르던 전압, 전류의 적(積)에 해당하는 에너지가 수천도 이상 높은 온도의 금속증기로 열전리되면서 매우 빠른 속도로 주위에 비산된다.As shown in FIG. 4, the present invention has a current through an input terminal, a fixed contactor 25, a contact 18, a contact 28, a movable contactor 23, a bimetal 19, and an output terminal 17. Will flow. In this process, when an overcurrent flows or operates the opening / closing mechanism part 13, as shown in FIG. 5, the movable contactor 23 is lifted upward by the opening / closing mechanism part 13, and the contacts 18 and 28 are moved. As many large currents flowing through the current are temporarily cut off, the energy corresponding to the enemy of the voltage and current flowing immediately before is thermally ionized into the metal vapor at a temperature of several thousand degrees or more and is scattered around at a very high speed.

이때, 본 발명에서는 도 5로 보인 바와 같이 아크가 도면상 좌측으로 비산되는 것이며, 상당부분의 아크는 유공분리격벽(30)의 통공(27)을 통하여 외부로 배출되고, 절곡런너(24)와 입력측 단자 사이에 각각 연장벽(26)을 형성하여서 된 좁은 공간에서 아크는 분산 및 바운드기도 하나 절곡런너(24)에 의하여 가동접촉자(23) 측으로의 이동이 차단되고, 이에 따라 그 후단의 바이메탈(19)이나 개폐기구부(13)로의 비산이 차단되는 것이다.At this time, in the present invention, as shown in FIG. 5, the arc is scattered to the left in the drawing, and a substantial portion of the arc is discharged to the outside through the through hole 27 of the hole separation partition 30, and the bending runner 24 and In the narrow space formed by the extension wall 26 between the input terminals, the arc is dispersed and bound, but movement to the movable contactor 23 side is blocked by the bending runner 24, and thus the bimetal (after) 19) or the scattering to the opening / closing mechanism part 13 is blocked.

그러므로, 본 발명에서는 아크 비산으로 인한 피해에 둔감한 부분인 고정접촉자(25) 및 입력측 단자(16)를 제외하고 과전류 차단기의 작동에 직접적 영향을 미치는 요소들에는 하등의 영향을 주지 않을 수 있게 되어 아크 비산으로 인한 고장의 발생을 방지하게 된다.Therefore, in the present invention, except for the fixed contactor 25 and the input terminal 16, which are insensitive to damage caused by arc scattering, the elements that directly affect the operation of the overcurrent circuit breaker may not have any influence. This prevents the occurrence of failure due to arc scattering.

아울러, 본 발명에서는 먼지가 과전류 차단기 내부로 침입하는 것을 방지함과 동시에 아크가스가 주위에 무질서하게 비산하여 주위의 부품에 손상을 입히지 않도록 하기 위하여 장방향 통공(27)을 유공분리격벽(30)의 상방에 일정간격으로 형성한 것이다.In addition, in the present invention, in order to prevent dust from infiltrating into the overcurrent breaker and to prevent the arc gas from scattering randomly around to damage the surrounding components, the longitudinal hole 27 is provided with a perforated partition wall 30. It is formed at regular intervals above.

도 1은 종래의 과전류 차단기에 소호를 위하여 아크런너가 고정접촉자에 형성된 상태를 보인 종단면도.1 is a longitudinal sectional view showing a state in which an arc runner is formed in a fixed contactor for extinguishing a conventional overcurrent breaker.

도 2는 종래의 고정접촉자에 아크런너가 고정된 상태를 보인 종단면도.Figure 2 is a longitudinal sectional view showing a state in which the arc runner is fixed to the conventional fixed contactor.

도 3은 본 발명에 의한 과전류 차단기의 전체적인 구조를 보인 사시도.Figure 3 is a perspective view showing the overall structure of the overcurrent breaker according to the present invention.

도 4는 본 발명에 의한 과전류 차단기의 구조를 보인 종단면도.Figure 4 is a longitudinal sectional view showing the structure of the overcurrent breaker according to the present invention.

도 5는 본 발명에 의한 과전류 차단기의 아크 발생 상태를 보인 종단면도.Figure 5 is a longitudinal sectional view showing an arc generation state of the overcurrent breaker according to the present invention.

도 6은 본 발명의 요부로서 가동접촉자의 구조를 보인 분리사시도.Figure 6 is an exploded perspective view showing the structure of the movable contact as the main portion of the present invention.

도 7은 도 6의 구조를 보인 종단면도.7 is a longitudinal cross-sectional view showing the structure of FIG.

*도면의 주요 부분에 대한 부호의 설명* Explanation of symbols for the main parts of the drawings

11:본체 13:개폐기구부 16:입력측단자11: Main unit 13: Opening and closing mechanism 16: Input terminal

17:출력측단자 18:접점 19:바이메탈17: Output terminal 18: Contact 19: Bimetal

21:작동레버 22:돌기부 23:가동접촉자21: operating lever 22: protrusion 23: movable contact

24:절곡런너 25:고정접촉자 26:연장벽24: bending runner 25: fixed contact 26: extension wall

27:통공 28:접점 29:전개부27: Through hole 28: Contact point 29: Development part

30:유공분리격벽30: hole separation partition

Claims (3)

본체(11)의 내부에 입력측 단자(16)와 부하측 단자(17)를 단속하는 가동접촉자(23)의 접점(18)과, 고정접촉자(25)의 접점(28)을 단속시키는 개폐기구부(13)와, 바이메탈(19)에 의하여 후퇴되며 개폐기구부(13)를 작동시키는 작동레버(21)로 된 공지의 과전류 차단기에 있어서, 가동접촉자(23)의 선단에 접점(18)과 함께 절곡 런너(24)가 일체로 고정되도록 하여서 됨을 특징으로 하는 분전반용 과전류 차단기.An opening / closing mechanism part 13 for intermittently contacting the contacts 18 of the movable contact 23 with the input terminal 16 and the load-side terminal 17 interposed between the main body 11 and the contact 28 of the fixed contact 25. And a known overcurrent circuit breaker made of an operating lever 21 which is retracted by the bimetal 19 and operates the opening / closing mechanism 13, the runner (bending with the contact 18 at the tip of the movable contact 23) 24) over-current circuit breaker, characterized in that to be integrally fixed. 청구항 1에 있어서,The method according to claim 1, 전술한 런너(24)와 가동접촉자(23)를 관통하는 접점(18)의 돌기부(22) 상단에 전개부가 형성되어 일체로 고정됨을 특징으로 하는 분전반용 과전류 차단기.An overcurrent breaker for a distribution board, characterized in that the deployment part is formed on the upper end of the protrusion part 22 of the contact point 18 penetrating the runner 24 and the movable contactor 23 and fixed integrally. 청구항 1에 있어서,The method according to claim 1, 절곡런너(24)와 입력측단자(16) 사이에 각각 연장벽(26)을 형성하여서 됨을 특징으로 하는 분전반용 과전류 차단기.An overcurrent breaker for a distribution board, characterized in that an extension wall (26) is formed between the bending runner (24) and the input side terminal (16), respectively.
KR1020070074734A 2007-07-25 2007-07-25 Overcurrent Breaker For Distribution Board KR100926646B1 (en)

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