KR20160116945A - Cover of mccb with arc discharge structure - Google Patents

Cover of mccb with arc discharge structure Download PDF

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Publication number
KR20160116945A
KR20160116945A KR1020150045404A KR20150045404A KR20160116945A KR 20160116945 A KR20160116945 A KR 20160116945A KR 1020150045404 A KR1020150045404 A KR 1020150045404A KR 20150045404 A KR20150045404 A KR 20150045404A KR 20160116945 A KR20160116945 A KR 20160116945A
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KR
South Korea
Prior art keywords
opening
wall portion
closing plate
partition wall
plate
Prior art date
Application number
KR1020150045404A
Other languages
Korean (ko)
Other versions
KR101916218B1 (en
Inventor
박도현
윤대영
김덕중
Original Assignee
현대중공업 주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020150045404A priority Critical patent/KR101916218B1/en
Publication of KR20160116945A publication Critical patent/KR20160116945A/en
Application granted granted Critical
Publication of KR101916218B1 publication Critical patent/KR101916218B1/en

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Classifications

    • 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
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342—Venting arrangements for arc chutes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0214—Housing or casing lateral walls containing guiding grooves or special mounting facilities
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0235—Contacts and the arc extinguishing space inside individual separate cases, which are positioned inside the housing of the circuit breaker
    • 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
    • H01H73/06—Housings; Casings; Bases; Mountings

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  • Breakers (AREA)

Abstract

The present invention relates to a wiring breaker cover having an arc discharge structure. More particularly, it is applied to a circuit breaker to prevent foreign matter from flowing into the circuit breaker when the circuit breaker does not operate, and to discharge the arc, molten material, or ionizing gas generated inside the circuit breaker To a wiring breaker cover having an arc discharge structure. According to the present invention, there is provided a cover for a wiring breaker, comprising: a body portion; A first sidewall portion and a second sidewall portion extending from one or both ends of the body portion; A first partition wall portion and a second partition wall portion extending between the first sidewall portion and the second sidewall portion; And a plurality of second discharge ports, each of which is provided between the first side wall portion and the first partition wall portion, between the first partition wall portion and the second partition wall portion, and between the second partition wall portion and the second side wall portion, A first opening and closing plate on which a hole is formed; And a second opening and closing plate having a front surface portion and a second opening hole formed on a surface thereof so as to be in contact with the rear surface of the first opening and closing plate, And a folding unit that is provided to be spaced apart from the center of the first opening / closing plate, and a folding unit provided at one side thereof to be coupled to the first opening / closing plate and the other to be coupled to the fixing plate.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a circuit breaker cover having an arc discharge structure,

The present invention relates to a wiring breaker cover having an arc discharge structure. More particularly, it is applied to a circuit breaker to prevent foreign matter from flowing into the circuit breaker when the circuit breaker does not operate, and to discharge the arc, molten material, or ionizing gas generated inside the circuit breaker To a wiring breaker cover having an arc discharge structure.

Generally, a circuit breaker means an electric device that protects a load and a line by manually or automatically shutting off the line when an abnormality such as a line overload or a short circuit occurs.

Generally, in the case of a circuit breaker for wiring, the terminal part connecting the power source side and the load side, the opening and closing mechanism for opening and closing the contact between the stationary contactor and the movable contact mechanically, and the abnormal current or fault current such as overcurrent, instantaneous current or short- A trip mechanism for detecting the time to operate the opening and closing mechanism, a so-called mechanism for laminating a plurality of grids, which are plates made of a ferromagnetic material, between a pair of the support plates, And a housing portion which is composed of an upper cover and a lower cover (or a left cover and a right cover).

In the case of the above-mentioned wiring breaker, when the manual or automatic operation is performed according to the occurrence of the abnormal current or the fault current, the SOHO mechanism causes the arc to be extinguished, and arc, molten material, or ionized gas is ejected.

At this time, if the ejected arc, molten material, ionizing gas, or the like can not be discharged to the outside of the circuit breaker, it may affect peripheral devices (opening / closing mechanism, trip mechanism, etc.) There is a problem that the possibility of occurrence of a short-circuit accident increases.

Accordingly, a structure for easily discharging arc, molten material, or ionized gas generated in the arc extinguishing process inside the circuit breaker to the outside is indispensably required in the circuit breaker.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a sealing structure for preventing foreign substances from entering into the interior of a circuit breaker when the circuit breaker is not operated, Which is capable of discharging an arc, a molten material, or an ionized gas discharged from the arc discharge structure to the outside.

In order to achieve the above object, according to a preferred embodiment of the present invention, a circuit breaker cover having an arc discharge structure includes a body portion; A first sidewall portion and a second sidewall portion extending from one or both ends of the body portion; A first partition wall portion and a second partition wall portion extending between the first sidewall portion and the second sidewall portion; And a plurality of second discharge ports, each of which is provided between the first side wall portion and the first partition wall portion, between the first partition wall portion and the second partition wall portion, and between the second partition wall portion and the second side wall portion, A first opening and closing plate on which a hole is formed; And a second opening and closing plate having a front surface portion and a second opening hole formed on a surface thereof so as to be in contact with the rear surface of the first opening and closing plate, And a folding unit that is provided to be spaced apart from the center of the first opening / closing plate, and a folding unit provided at one side thereof to be coupled to the first opening / closing plate and the other to be coupled to the fixing plate.

The fixing plate may be disposed parallel to the front surface of the first opening and closing plate.

The first open / close plate may move to the outside of the body when pressure is generated from the inside to the outside of the body.

Also, the folded portion may be folded by the movement of the first open / close plate so that the rear portion contacts the front portion of the first open / close plate and the front portion contacts the rear portion of the fixed plate.

In addition, the first discharge hole and the second discharge hole may be formed so as not to face each other.

In addition, the first folding unit may be formed of a flexible material.

According to the present invention, when the wiring breaker is not operated, a sealing structure can be formed to prevent foreign matter from flowing into the inside. When the wiring breaker is operated, arc, molten material, It is possible to form an open structure so as to discharge the wiring breaker, and the operation performance of the wiring breaker can be maintained.

1 is a perspective view of a wiring breaker cover having an arc discharge structure according to a preferred embodiment of the present invention,
Fig. 2 is a detailed view of the engaging structure of the first open / close plate, the folding portion, and the fixing plate in Fig. 1; and
Figs. 3 and 4 are reference views of the open structure of the first open / close plate and the second open / close plate of Fig. 1. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. Further, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be practiced by those skilled in the art.

FIG. 1 is a perspective view of a circuit breaker cover having an arc discharge structure according to a preferred embodiment of the present invention, FIG. 2 is a detailed view of a joint structure of a first open / close plate, a folding part, and a fixing plate.

1 and 2, a circuit breaker cover 10 having an arc discharge structure according to a preferred embodiment of the present invention includes a body portion 20, a first side wall portion 22, a second side wall portion 24, 1 partition wall portion 26, a second partition wall portion 28, a first open / close plate 30, and a second open / close plate 40. [

The body portion 20 is formed of an insulating material (for example, epoxy resin or the like), and is equipped with an opening / closing mechanism, a trip mechanism, and an SOHO mechanism (not shown). The body portion 20 includes a first side wall portion 22, The portion 24 is formed to extend from one end or the other end of the body 20.

The first partition wall portion 26 and the second partition wall portion 28 are spaced apart from each other between the first sidewall portion 22 and the second sidewall portion 24, The second partition wall portion 28 may be formed between the first side wall portion 22 and the second side wall portion 24 and the second partition wall portion 28 may be formed between the first partition wall portion 26 and the second side wall portion 24 .

The reason why the first and second partition walls 26 and 28 are formed in the above-described manner is that the insulation between the terminal portions (not shown) disposed on the terminal placement portions 29a, 29b, and 29c, respectively, So that it can be smoothly performed.

The first opening and closing plate 30 is provided between the first side wall 22 and the first partition 26 and between the first partition 26 and the second partition 28 and between the second partition 28, And the second side wall portion 24, respectively.

The first opening and closing plate 30 may be spaced apart from the ends of the terminal arranging portions 29a, 29b and 29c to the inside of the body portion 20. The first opening and closing plate 30 may have a plurality of first discharge holes 32 And may be fixed to the bottom surface of the body portion 20. [

The first open / close board 30 includes a fixed plate 36 spaced apart from the first open / close board 30 on the outer side of the body, a first cover plate 30 coupled to the first cover plate 30, And a folding unit 34 coupled to the first opening and closing plate 30 and folded toward the center of the first opening and closing plate 30. [

The folding section 34 may be formed of a flexible material and the fixing plate 36 may be provided parallel to the front face of the first opening and closing plate 30 and fixed to the bottom face of the body section 20. [ . Here, the reason why the fixing plate 36 is provided so as to be in parallel with the front face of the first opening / closing plate 30 will be described later with reference to FIGS. 3 and 4.

The front surface of the second opening / closing plate 40 is in contact with the rear surface of the first opening / closing plate 30, and a plurality of second exhaust holes 42 are formed on the surface. At this time, the first discharge hole 32 and the second discharge hole 34 may be formed so as not to be opposed to each other (in other words, not overlap each other).

The rear face of the first opening and closing plate 30 and the front face of the second opening and closing plate 40 are in contact with each other and the first opening hole 32 formed in the first opening and closing plate 30 and the second opening and closing plate Since the second discharge holes 42 formed in the lower cover 10 are provided so as not to face each other, when the lower cover 10 of the present invention is applied to a circuit breaker for a wiring, a sealing structure for sealing the inside of the circuit breaker can be formed. It is possible to prevent foreign matter from flowing into the inside.

In the case of the circuit breaker to which the cover 10 of the present invention is applied, foreign matter is prevented from flowing into the interior due to the above-described structure. However, when the circuit breaker for wiring breaks down due to abnormal current such as overcurrent, instantaneous current, The first opening / closing plate 30 and the second opening / closing plate 40 form an open structure due to the pressure generated inside the circuit breaker when the door is opened or closed (i.e., the opening / closing operation and the arc extinguishing operation) Which will be described below with reference to FIGS. 3 and 4. FIG.

Figs. 3 and 4 are reference views of the open structure of the first open / close plate and the second open / close plate of Fig. 1. Fig.

3, when the circuit breaker to which the cover 10 of the present invention is applied operates according to an abnormal current or an accident current such as an overcurrent, an instantaneous current, a short-circuit current, or the like, it is generated from the inside to the outside of the body portion 20 The second opening and closing plate 40 fixed to the bottom surface of the body portion 20 presses the first opening and closing plate 30 by the pressure of the first opening and closing plate 30, The first open / close board 30 and the second open / close board 40 are separated from each other.

4 (a) and 4 (b), the folded portion 34 is folded by the pressing of the first open / close board 30 in accordance with the movement, and the rear portion of the folded portion 34 is folded The front portion of the folding portion 34 comes into contact with the rear portion of the fixing plate 36. [

Since the fixing plate 36 is fixed to the bottom surface of the body 20 and is parallel to the front surface of the first opening and closing plate 30 as described above, The first opening and closing plate 30 and the second opening and closing plate 40 can be easily contacted with each other by the operation of the first opening and closing plate 30 and the folding and unfolding portion 34. [ It is possible to form an open structure by the first discharge hole 32 and the second discharge hole 42.

Accordingly, in the case of the circuit breaker to which the cover 10 of the present invention is applied, arc, molten material, or ionizing gas generated in the arc during the arc extinguishing operation flows through the first discharge hole 32 and the second discharge hole 42 When the internal pressure is lowered after the arc extinguishing operation, the first opening / closing plate 30 and the second opening / closing plate 40 come into contact with each other again to form a closed structure, so that the foreign substances are introduced into the inside .

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be possible. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is limited by these embodiments and the accompanying drawings no. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

(10): Circuit Breaker Cover (20): Body
(22): first side wall portion (24): second side wall portion
(26): first partition wall portion (28): second partition wall portion
(30): first open / close plate (32): first discharge hole
(34): folding part (36): fixing plate
(40): second open / close plate (42): second discharge hole

Claims (6)

In the cover of the circuit breaker,
A body portion;
A first sidewall portion and a second sidewall portion extending from one or both ends of the body portion;
A first partition wall portion and a second partition wall portion extending between the first sidewall portion and the second sidewall portion;
And a plurality of second discharge ports, each of which is provided between the first side wall portion and the first partition wall portion, between the first partition wall portion and the second partition wall portion, and between the second partition wall portion and the second side wall portion, A first opening and closing plate on which a hole is formed; And
And a second opening / closing plate having a front surface contacting the rear surface of the first opening and closing plate and having a plurality of second discharge holes formed on a surface thereof,
Wherein the first opening and closing plate includes a fixing plate spaced apart from the first opening and closing plate so as to be spaced apart from the first opening and closing plate so that one side thereof is engaged with the first opening and closing plate and the other side thereof is engaged with the fixing plate, And a folding portion provided on an upper surface of the circuit breaker. The method according to claim 1,
Wherein the fixing plate is parallel to the front surface of the first heat sink. The method according to claim 1,
Wherein the first heat radiating plate moves to the outside of the body part when pressure is generated from the inside to the outside of the body part. The method of claim 3,
Wherein the folded back portion is folded by the movement of the first heat radiating plate so that the rear surface portion is in contact with the front surface portion of the first heat radiating plate and the front surface portion is in contact with the rear surface portion of the fixing plate. . The method according to claim 1,
Wherein the first heat-dissipating hole and the second heat-dissipating hole are formed so as not to face each other. The method according to claim 1,
Wherein the folded portion is formed of a flexible material.
KR1020150045404A 2015-03-31 2015-03-31 Cover of mccb with arc discharge structure KR101916218B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150045404A KR101916218B1 (en) 2015-03-31 2015-03-31 Cover of mccb with arc discharge structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150045404A KR101916218B1 (en) 2015-03-31 2015-03-31 Cover of mccb with arc discharge structure

Publications (2)

Publication Number Publication Date
KR20160116945A true KR20160116945A (en) 2016-10-10
KR101916218B1 KR101916218B1 (en) 2018-11-07

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KR1020150045404A KR101916218B1 (en) 2015-03-31 2015-03-31 Cover of mccb with arc discharge structure

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Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100832328B1 (en) * 2006-12-29 2008-05-26 엘에스산전 주식회사 Arc-suppression appratus of circuit breaker

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KR101916218B1 (en) 2018-11-07

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