KR101315008B1 - Arc chute and a circuit braker having the same - Google Patents

Abstract

The arc chute of the present invention and the circuit breaker having the same, are stacked to form a multi-stage layer up and down, a pair of extensions are formed on both sides of the front surface, a plurality of grids each protruding protrusions formed on both sides, and the grid A pair of fixing covers which are coupled to the front side of the front and rear surfaces of the extension parts and cover both sides of the grids, and the locking grooves are formed to penetrate to both sides so that the locking projections can be inserted correspondingly and positioned. It includes.

Description

Arc chute and wiring breaker having same {ARC CHUTE AND A CIRCUIT BRAKER HAVING THE SAME}

The present invention relates to an arc suit, and more particularly, by combining a pair of covers on the front of the grid stacked in a multi-stage layer, it is possible to stably fix the grids, and also to improve arc extinguishing performance And a circuit breaker having the same.

In general, a circuit breaker is an electric device that automatically cuts off a circuit in the event of an electrical overload or a short circuit to protect the circuit and the load.

Such a circuit breaker includes a terminal part capable of largely connecting the power supply side and the load side, a fixed part and a mechanism part that opens and closes the movable terminal to be mechanically contacted, and a mechanism part that senses an overcurrent or short circuit current at the power supply side. It consists of a trip part which induces trip operation.

An arc chute made of a heat-resistant and arc-resistant material is confined in order to trap the arc in order to prevent the arc generated at the time of opening of the contact near the contact and dissipate its energy.

Here, the arc chute is installed in a shape in which a plurality of grids are stacked in multiple stages, and a simple fixing structure is required while stably fixing the grids.

Literature related to the present invention is Republic of Korea Patent No. 20-0148679 (March 18, 1999), the document is a stator and the SOHO unit surrounding the grid and sidewalls in the SOHO chamber integrally formed by assembling A fire extinguishing unit of a circuit breaker that can be improved is disclosed.

An object of the present invention is to connect a pair of covers to the front of the grid stacked in a multi-stage layer to cover the front and side portions of the grid, the arc chute and wiring for having it firmly fixed to a plurality of grids To provide a breaker.

In addition, it is to provide an arc chute and a circuit breaker having the same, which can quickly transfer the arc generated in the breaker to the grid by combining one end of the grids and covers stacked in a multi-stage layer to each other.

The arc chute according to the present invention is stacked so as to form a multi-stage layer up and down, a pair of extension portions are formed on both sides of the front surface, and a plurality of grids each having protrusions formed on both sides thereof, and coupled to the front of the grids. It is coupled to cover the upper, lower, left, and right sides of the extension portion and the both sides of the grid, and includes a pair of fixing cover is formed through the locking groove is formed in both sides so that the locking projection is inserted correspondingly to the locking position It features.

Here, the front surface of the grid is preferably formed with a concave portion that gradually narrows toward the rear between the extension portion.

In addition, the locking protrusions are formed to protrude on the outer surface of the extension, respectively, the first locking projection is formed on the inclined inclined surface on the front, and the second locking projections are formed on both sides of the grid is preferably provided.

In addition, the locking groove is formed with a first locking hole which is formed to penetrate into the side so that the rear surface of the first locking projection is locked, and a second hole formed in the rear of the grid so that the second locking projection is inserted correspondingly. It is preferable to be.

In addition, the first locking hole is preferably formed of one hole having a length up and down.

In addition, the second hole is preferably formed to open to the rear of the grid so that the second locking projection can be inserted from the rear.

In addition, it is preferable that the pair of fixed covers each end of each of the two ends of the grid is wrapped around each other, the end facing each other is formed to be gradually narrowed along the rear.

In addition, it is preferable that a plurality of insertion ends are formed inside the fixing covers as a plurality of upper and lower layers, and inserted between the grids.

On the other hand, the circuit breaker having an arc chute of the present invention is characterized in that it comprises the arc chute.

An object of the present invention is to combine a pair of covers on the front of the grid stacked in a multi-stage layer so that the front portion and the side portion of the grid is covered, there is an effect that can secure a plurality of grids firmly.

In addition, by intersecting and combining one end of the grids and the covers stacked in a multi-stage layer, the arc generated in the breaker can be quickly transferred to the grids, thereby improving the extinguishing performance. .

In addition, the protrusions formed on both sides of the grids and the holes formed on both sides of the fixing covers can be slidably coupled, and thus, the grid and the cover can be easily fastened.

1 is a combined perspective view for showing an arc chute according to an embodiment of the present invention.
2 is an exploded perspective view for showing the arc chute according to an embodiment of the present invention.
3 is a side view for showing the arc chute according to an embodiment of the present invention.
4 is a plan view for showing the arc chute according to an embodiment of the present invention.
5 is a cross-sectional view illustrating a circuit breaker having an arc chute according to another exemplary embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving it will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings.

The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

In addition, in the description of the present invention, if it is determined that related related art and the like may obscure the gist of the present invention, detailed description thereof will be omitted.

1 is a combined perspective view for showing the arc chute 100 according to an embodiment of the present invention, Figure 2 is an exploded perspective view for showing the arc chute 100 according to an embodiment of the present invention.

And, Figure 3 is a side view for showing the arc chute 100 according to an embodiment of the present invention, Figure 4 is a plan view for showing the arc chute 100 according to an embodiment of the present invention.

In addition, Figure 5 is a cross-sectional view for showing a circuit breaker having an arc chute according to another embodiment of the present invention.

1 to 5, the arc chute 100 according to an embodiment of the present invention is composed of a plurality of grid 100 and a pair of fixed cover 300.

First, the grids 200 are stacked on top of each other to form a plurality of layers spaced apart from each other. The grids 200 may be made of heat and arc resistant materials.

In addition, a pair of extension portions 210 are formed on both sides of the grid 200, and protrusions protrude from both sides of the grid 200.

In addition, a concave portion 220 gradually narrowing toward the rear side between the extension portions 210 may be formed on the front surface of the grids 200.

One end of the mover 40, which will be described later, is positioned in the recess 112, and a space in which one end of the mover 4 can move up and down is formed.

The locking projections are formed to protrude on the outer surfaces of the extension portions 210, respectively, and the first locking projections 230 on which the inclined surface 231 is formed on the front surface thereof, and second protrusions protruding on both sides of the grids 200, respectively. It is provided with a locking protrusion 240.

Here, the first locking projection 230 is formed with an inclined surface 231 on the front surface, the slide is moved along the inner surface of the fixed cover 300 to be described later is the rear end is caught in the first locking hole (31). .

The second locking protrusion 240 is positioned to correspond to the second locking hole 320 to be described later, and provides a locking structure in the front and rear directions of the first locking protrusion 230 and the grids 200, respectively.

The pair of fixing covers 300, which are coupled to the front of the grid 200 stacked in multiple stages, firmly fix the grids 200 and move arcs to the grids 200. Do it.

That is, the pair of fixing covers 300 are coupled to the front surfaces of the grids 200 and are coupled to cover upper and lower surfaces and both sides of the extension portions 210.

In addition, the pair of fixing covers 300 are formed with a locking groove through which both of the first locking protrusion 230 and the second locking protrusion 240 are inserted to correspond to each other.

The locking groove has a first locking hole 310 formed to penetrate into the side so that the rear surface of the first locking protrusion 230 is locked, and the second locking protrusion 240 is inserted to correspond to the locking groove. The second holes 320 are formed on the rear surfaces of the grids 200, respectively.

Here, the first catching hole 310 is preferably formed as one hole having a length up and down, it may be divided into a plurality of upper and lower stages.

In addition, the second locking hole 320 may be formed to open to the rear of the grid 200 so that the above-described second locking protrusion 240 can be inserted from the rear. Here, the second catching holes 320 may be divided into upper and lower stages.

In addition, the pair of fixing covers 300 are coupled to each end in a state in which both ends of the grids 200 are respectively wrapped.

In this case, the fixing covers 300 may be formed such that end portions facing each other gradually become narrower along the rear side.

That is, as illustrated in FIGS. 1, 2, and 4, one end of the fixing covers 300 may have a tapered shape to correspond to each other.

In addition, the inside of the fixing cover 300 is formed of a plurality of upper and lower layers, a plurality of insertion end 330 is inserted between the grid 200 is formed.

The insertion end 330 is inserted between the grids 200 and partitions the grids 200 from being in contact with each other.

In this case, the insertion end 330 is formed to extend to the rear of the grid 200, thereby increasing the contact area with the grid 200.

Thus, arcs generated within the breaker can be easily delivered to the grids 200, thereby improving arc extinguishing performance.

The insertion end as described above may have a tapered shape in the same manner as one end of the fixing covers 300.

Hereinafter, a circuit breaker 10 having an arc chute 100 according to another exemplary embodiment of the present invention will be described with reference to FIG. 5, and the same configuration as that described above will not be repeatedly described.

In addition, as shown in FIG. 5, the circuit breaker 10 having the arc chute 100 according to the present invention includes a housing 20, a trip part 50, a stator 30, and a mover 40. ), A plurality of grids 200, and a pair of fixed covers 300.

First, the stator 30 is fixedly installed at the inner lower end of the housing 20, and is formed of a conductor so that current can be induced to flow inward.

In addition, a fixed contact 30a is brazed at the upper end of the stator 30 to make a contact with a movable contact 40a of the mover 40 to be described later.

Here, the fixed contact 30 may act as an arc runner by embossing the rear end.

In addition, the inside of the housing 20 may further include a trip unit 50 for detecting an overcurrent or a short circuit current at the power supply side to induce a trip operation of the mechanism unit.

The mover 40 is rotated to the position which contacts and opens with the stator 30 in the state in which the rotating shaft formed in the end was rotatably provided in the housing 20.

In addition, the movable contact 40a is brazed at one end of the mover 40 to be in contact with the fixed contact 30a of the stator 30 described above.

As a result, the present invention combines a pair of fixing covers 300 to the front of the grid 200 stacked in a multi-stage layer, so that the front portion and the side portion of the grid 200 is covered, a plurality of grid ( 200) has the effect that can be firmly fixed.

In addition, by arranging the grids 200 stacked in a multi-stage layer and one end of the fixing cover 300 to each other, the arcs generated in the circuit breaker may be quickly transferred to the grids 200. Due to this has the effect of improving the performance of SO.

In addition, the locking projections formed on both sides of the grid 200 and the locking holes of the fixed cover 300 can be coupled to the sliding, it is possible to easily fasten the grid 200 and the fixed cover 300.

So far, specific embodiments of the arc chute 100 and the circuit breaker 10 having the same have been described. However, various modifications and variations may be made without departing from the scope of the present invention.

Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

It is to be understood that the foregoing embodiments are illustrative and not restrictive in all respects and that the scope of the present invention is indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

10: circuit breaker 20: housing
30: stator 30a: fixed contact
40: mover 40a: movable contact
50: trip part 100: arc suit
200: grid 210: extension portion
220: recess 230: first locking projection
231: slope 240: second locking projection
300: fixed cover 310: first locking hole
320: second locking hole 330: insertion end

Claims (8)

Stacked spaced apart to form a multi-tiered upper and lower layers, a pair of extension portions are formed on both sides of the front surface, and a plurality of grids each having protrusions protruding from both sides thereof, and coupled to the front surface of the grids, the upper, lower, left and right surfaces of the extension portions And a pair of fixing covers which are coupled to surround both sides of the grids, and having a locking groove penetrating to both sides so that the locking projections can be inserted and correspondingly positioned.
The pair of fixing covers, each end is coupled in a state in which both ends of each of the end of the grid is coupled, arc ends, characterized in that the end facing each other is formed to gradually narrow along the rear of the grid.
The method of claim 1,
In front of the grids,
An arc chute, characterized in that the concave portion is formed to narrow gradually toward the rear between the extension portion.
The method of claim 1,
The locking projections,
A first catching protrusion protruding from each of the outer surfaces of the extension parts and having an inclined surface formed on a front surface thereof;
Second catching protrusions protruding from both sides of the grids are provided,
The engaging groove
A first locking hole formed to penetrate into the side so that a rear surface of the first locking protrusion is locked;
An arc chute, characterized in that the second engaging hole is formed in the rear of the grid is formed so that the second engaging projection correspondingly.
The method of claim 3,
The first locking hole,
An arc chute characterized in that formed in one hole having a length up and down.
The method of claim 1,
The second locking hole,
And the second catching protrusion is formed to be open to the rear of the grids so that the second catching protrusion can be inserted from the rear side.
delete The method of claim 1,
Inside the fixing covers,
An arc chute, characterized in that formed in a plurality of upper and lower layers, a plurality of insertion ends are inserted between the grids.
Stacked spaced apart to form a multi-tiered upper and lower layers, a pair of extension parts are formed on both sides of the front surface, and a plurality of grids each having protrusions protruding from both sides thereof, and coupled to the front of the grids, the upper, lower, left and right surfaces of the extension parts. And a pair of fixing covers which are coupled to cover both sides of the grids, and having a locking groove penetrating to both sides so that the locking projections can be inserted and correspondingly positioned.
The hooking protrusions are formed to protrude on the outer surfaces of the extension parts, respectively, and include first catching protrusions formed on an inclined surface on the front surface, and second catching protrusions protruding on both sides of the grids.
The locking groove may include a first locking hole formed to penetrate to the side so that the rear surface of the first locking protrusion is locked, and a second locking hole formed at the rear of the grids so that the second locking protrusion is correspondingly inserted. Circuit breaker having an arc chute, characterized in that it comprises an arc chute.

Images