WO2024085365A1 - Dispositif d'extinction d'arc - Google Patents

Dispositif d'extinction d'arc Download PDF

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Publication number
WO2024085365A1
WO2024085365A1 PCT/KR2023/010303 KR2023010303W WO2024085365A1 WO 2024085365 A1 WO2024085365 A1 WO 2024085365A1 KR 2023010303 W KR2023010303 W KR 2023010303W WO 2024085365 A1 WO2024085365 A1 WO 2024085365A1
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WO
WIPO (PCT)
Prior art keywords
grid
arc
extinguishing device
guide
arc guide
Prior art date
Application number
PCT/KR2023/010303
Other languages
English (en)
Korean (ko)
Inventor
정한백
Original Assignee
엘에스일렉트릭 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 엘에스일렉트릭 주식회사 filed Critical 엘에스일렉트릭 주식회사
Publication of WO2024085365A1 publication Critical patent/WO2024085365A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/08—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
    • H01H33/12—Auxiliary contacts on to which the arc is transferred from the main contacts

Definitions

  • the present invention relates to an arc extinguishing device, and more specifically, to an arc extinguishing device having a structure capable of effectively extinguishing an arc generated during a blocking operation.
  • a circuit breaker is installed in the power system and is connected to the power source and the load to enable electricity to flow through them.
  • the circuit breaker performs a blocking operation to block the current state between the power source and the load. Accordingly, the power source and load may not be damaged by abnormal current.
  • a circuit breaker typically includes a fixed contact point that is fixedly installed and a movable contact point that is movable.
  • the movable contact point is provided to be movable in a direction toward the fixed contact point or in a direction opposite to the fixed contact point.
  • an arc is a flow of high-temperature, high-pressure electrons. Therefore, if the arc is not discharged to the outside of the circuit breaker and remains inside the circuit breaker, there is a risk that other components of the circuit breaker may be damaged by the heat or pressure of the arc. Therefore, a process of discharging the generated arc to the outside while reducing its temperature and pressure is required, which is called the arc extinguishing process.
  • circuit breakers are generally equipped with an arc extinguishing device including a plurality of grids.
  • Korean Patent Document No. 10-1031975 discloses an arc extinguishing device for a direct current switch. Specifically, an arc extinguishing device for a direct current switch that can induce a generated arc using permanent magnets arranged to face each other with a fixed contactor and a movable contactor in between is disclosed.
  • the arc extinguishing device disclosed in the above prior literature requires a separate permanent magnet to extinguish the arc.
  • the magnetic force may weaken or the arc extinguishing ability may deteriorate if the permanent magnet is damaged by the generated arc.
  • Korean Patent Document No. 10-1986552 discloses an arc extinguishing device for a direct current air circuit breaker. Specifically, an arc extinguishing device for a direct current air circuit breaker capable of extinguishing a generated arc using an arc guide and a sealing member disposed adjacent to the end of a grid is disclosed.
  • the arc guide is disposed only in a portion adjacent to the fixed contact point. Therefore, although it is possible to partially induce the arc that started at the fixed contact point, it does not provide a way to completely extinguish the arc that extends as the movable contact point moves.
  • the present invention is intended to solve the above problems, and the purpose of the present invention is to provide an arc extinguishing device with a structure that can provide the energy necessary to extinguish the generated arc.
  • Another object of the present invention is to provide an arc extinguishing device with a structure in which the arc can be effectively extinguished even when the energy of the generated arc is low.
  • Another object of the present invention is to provide an arc extinguishing device having a structure in which the generated arc can be guided to a suitable position for extinguishing the arc.
  • Another object of the present invention is to provide an arc extinguishing device with a structure in which the generated arc can be extinguished without excessive design changes.
  • Another object of the present invention is to provide an arc extinguishing device with a structure that can maximize the arc extinguishing effect through various modifications.
  • a grid portion positioned close to the fixed contact point and the movable contact point to extinguish an arc generated when the external fixed contact point and the movable contact point are spaced apart; and an arc guide coupled to the grid portion and generating gas by reacting with the generated arc, wherein the grid portion forms the body and is spaced apart from the fixed contact point and the movable contact point; a grid arm continuous with the grid body and extending toward the fixed contact point and the movable contact point; and an arc extension space partially surrounded by the grid body and the grid arm, wherein the movable contact point is movably accommodated, and the arc guide is configured to generate gas by the heat of the arc generated by the grid arm.
  • An arc extinguishing device is provided, which is coupled to and disposed to partially surround the arc extension space.
  • the grid body extends in a direction different from the grid arm, and the grid arm includes: a first grid arm that is biased toward one side of the extension direction of the grid body; And an arc extinguishing device may be provided, including a second grid arm that is biasedly positioned on the other side of the extension direction of the grid body and faces the first grid arm with the arc extension space in between.
  • the arc guide may include: a first arc guide coupled to the first grid arm; And an arc extinguishing device including a second arc guide coupled to the second grid arm and disposed to face the first arc guide with the arc extension space therebetween.
  • the arc guide includes: an internal arc guide coupled to the grid arm; and an external arc guide that accommodates the internal arc guide and is exposed to the arc extension space.
  • an arc extinguishing device may be provided in which the external arc guide is formed of a gassing material that generates gas by the heat of the generated arc.
  • the external arc guide is made of nylon, melamine, PA46, PA66, polyamide resin (PA), methyl methacrylate (MMA), and polyoxymethylene resin.
  • An arc extinguishing device may be provided, which is formed of one or more materials of polybutylene terephthalate (POM) or polybutyleneterephthalate (PBT).
  • the internal arc guide may be provided with an arc extinguishing device formed of an arc resistance material.
  • the internal arc guide may be provided with an arc extinguishing device formed of BMC (Bulk Molding Compound) material.
  • the inner arc guide may include a grid receiving portion recessed on one side facing the grid portion to accommodate the grid arm; and a guide rib extending partially surrounding the grid receiving portion to support the received grid arm.
  • An arc extinguishing device may be provided.
  • a plurality of grid units are provided, and the plurality of grid units are arranged side by side and spaced apart from each other along one direction.
  • a plurality of grid receiving units and a plurality of guide ribs are provided, respectively, and a plurality of grid receiving units and a plurality of grid receiving units are provided.
  • An arc extinguishing device may be provided in which the guide ribs are alternately arranged along the one direction.
  • the external arc guide includes an external space that accommodates the internal arc guide; and a plurality of external surfaces surrounding the external space in a plurality of directions and being continuous with each other, wherein the external space has one side facing the grid arm open.
  • the external arc guide includes an external space that accommodates the internal arc guide and extends long in one direction; a first outer surface surrounding the outer space at one end in one direction; a second outer surface continuous with the first outer surface and surrounding the outer space on one side of the extension direction of the grid arm; and a third outer surface that is continuous with the second outer surface and surrounds the outer space at the other end in the one direction.
  • An arc extinguishing device may be provided.
  • the external arc guide is continuous with the first external surface, the second external surface, and the third external surface, respectively, and has a fourth external surface surrounding the external space on one side in the width direction of the grid body.
  • An arc extinguishing device comprising a may be provided.
  • a pair of the inner arc guide and the outer arc guide are each provided, and the pair of inner arc guides are respectively accommodated in the outer space provided in the pair of outer arc guides, and the pair of inner arc guides are respectively provided in the outer space.
  • An arc extinguishing device may be provided in which the arc guide is disposed to face each other with a pair of the fourth outer surfaces provided on each of the pair of external arc guides interposed.
  • an arc extinguishing device including a side frame that is respectively coupled to the grid portion and the arc guide, and the side frame is coupled to the grid portion at a plurality of points.
  • the grid portion includes a plurality of grid engaging protrusions protruding toward the side frame at each end in the width direction of the grid body and the width direction of the grid arm, and the side frame is formed to penetrate therein.
  • An arc extinguishing device may be provided, including a plurality of grid coupling portions each receiving a plurality of the grid coupling protrusions.
  • the arc guide includes an external fastening hole recessed on one surface facing the side frame, and the side frame includes a side fastening hole formed therein to correspond to the external fastening hole; And an arc extinguishing device including a side fastening member that penetrates the side fastening hole and is inserted into the external fastening hole.
  • the arc extinguishing device can provide the energy necessary to extinguish the generated arc.
  • the generated arc passes through a plurality of grid units and is elongated, divided, cooled, and extinguished.
  • the grid portion includes a grid body that substantially performs the arc extinguishing process and a grid arm that is continuous with the grid body and extends outward.
  • An arc guide is coupled to the grid arm.
  • the arc guide includes an inner arc guide that is directly coupled to the grid arm and an outer arc guide that surrounds the inner arc guide and is exposed to the outside.
  • the external arc guide is made of a material that can generate gas by heat, that is, a gassing material. When an arc is generated, the external arc guide generates gas due to the heat generated along with it.
  • the generated gas forms in the area where the arc occurred. That is, due to the generated gas, the area where the arc is generated has a higher pressure than the space where the grid body is located or the outside of the arc extinguishing device. Due to the pressure difference, the generated arc moves toward the grid portion.
  • the energy necessary for the generated arc to extend and proceed toward the grid unit can be supplied.
  • the arc extinguishing device can effectively extinguish the arc even when the energy of the generated arc is low.
  • the external arc guide generates gas by the heat generated with the arc.
  • the pressure difference generated by the generated gas applies a transport force that moves the generated arc from the grid unit to the outside of the arc extinguishing device.
  • the arc can easily move or extend toward the outside of the grid portion and the arc extinguishing device by the pressure applied by the gas.
  • the generated arc can be effectively extinguished.
  • the arc extinguishing device can guide the generated arc to a suitable position to be extinguished.
  • the arc tends to progress toward the peak.
  • An internal arc guide is coupled to the grid arm that forms the peak of the grid portion.
  • the internal arc guide is formed of an arc-resistant material, so the progression of the arc can be prevented.
  • the arc that enters the grid portion can proceed to the grid portion located nearby along the grid body formed in a plate shape. Accordingly, the splitting and cooling effects of the arc can be improved compared to the case where the arc progresses to another grid portion through the grid arm.
  • the arc extinguishing device can extinguish the generated arc without excessive design changes.
  • the arc guide includes an external arc guide that is located on the outside and generates gas by heat, and an internal arc guide that is accommodated in the external arc guide and is directly coupled to the grid arm.
  • a single arc guide can perform both the role of supplying energy to the arc, insulation between the plurality of grid parts, and the role of advancing the arc in the grid body.
  • the arc guide is coupled to the side frame and guide arm.
  • a side fastening hole is formed through the inside of the side frame, and an external fastening hole is formed in the arc guide.
  • the side fastening member penetrates the side fastening hole and is inserted into the external fastening hole. Accordingly, the arc guide can be combined with the side frame.
  • a grid receiving portion is recessed in the inner arc guide.
  • the grid arm is inserted and coupled to the grid receiving portion. Accordingly, the arc guide and the grid portion can be combined.
  • the arc guide can be applied to existing products, and productivity can be improved.
  • the arc extinguishing device according to the embodiment of the present invention can maximize the arc extinguishing effect through various modifications.
  • the arc guide may be provided with additional members.
  • the additional member may be formed of the same gas generating material as the external arc guide and may be configured to generate additional gas by the heat of the arc.
  • the additional member may be formed of the same arc-resistant material as the internal arc guide, thereby enhancing insulation between the plurality of grid parts.
  • the effect of the arc guide can be further strengthened through various modifications of the arc guide.
  • FIG. 1 is a perspective view showing an arc extinguishing device according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view taken along line A-A showing the configuration of the arc extinguishing device in FIG. 1.
  • FIG. 3 is a B-B cross-sectional view showing the configuration of the arc extinguishing device of FIG. 1.
  • FIG. 4 is an exploded perspective view showing the configuration of the arc extinguishing device of FIG. 1.
  • FIG. 5 is a side view showing a side frame provided in the arc extinguishing device of FIG. 1.
  • FIG. 6 is a perspective view showing the support body of the support frame provided in the arc extinguishing device of FIG. 1.
  • FIG. 7 is a plan view showing a support plate provided on the support frame of FIG. 6.
  • FIG. 8 is a perspective view showing a mesh plate provided on the support frame of FIG. 6.
  • FIG. 9 is a plan view showing a cover frame provided in the arc extinguishing device of FIG. 1.
  • FIG. 10 is a perspective view showing a grid portion provided in the arc extinguishing device of FIG. 1.
  • FIG. 11 is a bottom view showing the grid portion of FIG. 10.
  • FIG. 12 is a front view showing the grid portion of FIG. 10.
  • FIG. 13 is a perspective view showing an arc runner provided in the arc extinguishing device of FIG. 1.
  • FIG. 14 is an exploded perspective view showing an arc guide provided in the arc extinguishing device of FIG. 1.
  • FIG. 15 is a right side view showing the arc guide of FIG. 14.
  • FIG. 16 is a left side view showing the arc guide of FIG. 14.
  • 17 to 19 are state diagrams showing the operation process of the arc extinguishing device according to an embodiment of the present invention.
  • communication means that one or more members are connected to each other in fluid communication.
  • the communication channel may be formed by a member such as a conduit, pipe, or piping.
  • communication may be used in the same sense as one or more members being “fluidly connected” to each other.
  • conducting means that one or more members are connected to each other to transmit current or electrical signals.
  • electricity may be formed in a wired form using a conductor member, or in a wireless form such as Bluetooth, Wi-Fi, or RFID.
  • electrification may include the meaning of “communication.”
  • fluid refers to any form of material that flows by external force and whose shape or volume can be changed.
  • the fluid may be a liquid such as water or a gas such as air.
  • an arc extinguishing device 10 according to an embodiment of the present invention is shown.
  • the arc extinguishing device 10 according to the illustrated embodiment is provided in a circuit breaker (not shown) that is connected to an external power source and load.
  • the arc extinguishing device 10 can extinguish the arc generated when the fixed contact point and the movable contact point are spaced apart from each other to the outside of the circuit breaker (not shown).
  • the arc extinguishing device 10 may be installed in a circuit breaker (not shown) through which a small current is applied. Accordingly, the arc extinguishing device 10 according to an embodiment of the present invention includes a different configuration compared to the case where it is provided in a circuit breaker (not shown) through which a large current is supplied, which will be described later.
  • the arc extinguishing device 10 includes a side frame 100, a support frame 200, a cover frame 300, a grid portion 400, an arc runner 500, and an arc guide 600. do.
  • a side frame 100 a support frame 200
  • a cover frame 300 a grid portion 400
  • an arc runner 500 a arc guide 600. do.
  • each configuration of the arc extinguishing device 10 will be described in detail with reference to the attached drawings, and the arc guide 600 will be described separately.
  • the side frame 100 forms part of the outer shape of the arc extinguishing device 10.
  • the side frame 100 is combined with other components of the arc extinguishing device 10, that is, the support frame 200, the cover frame 300, the grid portion 400, the arc runner 500, and the arc guide 600.
  • the side frame 100 supports the support frame 200, the cover frame 300, the grid portion 400, the arc runner 500, and the arc guide 600.
  • the side frame 100 is coupled to the support frame 200.
  • the side frame 100 has its upper end coupled to the support frame 200.
  • the side frame 100 is coupled to the cover frame 300.
  • the side frame 100 is indirectly coupled to the cover frame 300 by the support frame 200 at its upper end.
  • the side frame 100 is coupled to the grid portion 400.
  • the inner portion of the side frame 100 is coupled to each end of the grid portion 400 in the width direction.
  • the side frame 100 is combined with the arc runner 500.
  • the rear side portion of the side frame 100 is coupled with the arc runner 500.
  • the side frame 100 is coupled with the arc guide 600.
  • the lower inner portion of the side frame 100 is coupled to the arc guide 600.
  • a plurality of side frames 100 may be provided.
  • the plurality of side frames 100 may be spaced apart from each other and combined with each component of the arc extinguishing device 10 at different positions.
  • two side frames 100 are provided, including a first side frame 100a disposed on the left side and a second side frame 100b disposed on the right side.
  • the first side frame 100a is coupled to the left portion of the arc extinguishing device 10 described above.
  • the second side frame 100b is coupled to the right portion of the arc extinguishing device 10 described above.
  • a grid portion 400, an arc runner 500, and an arc guide 600 are positioned between the first side frame 100a and the second side frame 100b.
  • the first side frame 100a and the second side frame 100b have different positions, but other structures and functions are the same. Accordingly, in the following common description, the first side frame 100a and the second side frame 100b are collectively referred to as “side frame 100.”
  • the side frame 100 includes a side body 110, a support frame coupling portion 120, a grid coupling portion 130, an arc runner coupling portion 140, and a side fastening hole. It includes (150) and a side fastening member (160).
  • the side body 110 forms the body of the side frame 100.
  • the side body 110 is combined with other components of the arc extinguishing device 10.
  • the side body 110 may be of any shape that can be combined with and support other components of the arc extinguishing device 10.
  • the side body 110 is provided in a plate shape with a height in the vertical direction, a width in the front-to-back direction, and a thickness in the left-right direction.
  • One end in the height direction of the side body 110 is formed to have a shorter width than the other side in the height direction of the side body 110, the middle side portion and the lower side in the illustrated embodiment. You can.
  • the one end, that is, the upper end, of the side body 110 is coupled to the support frame 200.
  • the other side in the height direction of the side body 110 is coupled to the grid portion 400 and the arc runner 500.
  • Another end of the side body 110 in the height direction, the lower end in the illustrated embodiment, is coupled to the arc guide 600.
  • a support frame coupling portion 120, a grid coupling portion 130, an arc runner coupling portion 140, and a side fastening hole 150 are formed through the inside of the side body 110.
  • the support frame coupling portion 120 is a portion where the side body 110 is coupled to the support frame 200.
  • the support frame coupling portion 120 is formed through the side body 110 in the thickness direction, in the left and right directions in the illustrated embodiment.
  • the support frame coupling protrusion 214 of the support frame 200 is inserted and coupled to the support frame coupling portion 120.
  • the support frame coupling portion 120 may be of any shape capable of accommodating the support frame coupling protrusion 214.
  • the support frame coupling portion 120 is a space having a rectangular cross-section in which the length in the front-to-back direction is longer than the length in the vertical direction.
  • the shape of the support frame coupling portion 120 may change depending on the shape of the support frame coupling protrusion 214.
  • the support frame coupling portion 120 is formed to penetrate the side body 110. At this time, the support frame coupling portion 120 may be located on one side of the side body 110 facing the support frame 200, close to the upper end in the illustrated embodiment.
  • a plurality of support frame coupling portions 120 may be formed.
  • the plurality of support frame coupling portions 120 may be disposed at different positions and respectively coupled to the plurality of support frame coupling protrusions 214 formed at different positions.
  • two support frame coupling portions 120 are formed and are positioned close to the front and rear ends of the upper end of the side body 110, respectively.
  • the number and arrangement method of the support frame coupling portions 120 may vary depending on the number and arrangement method of the support frame coupling protrusions 214.
  • a grid coupling portion 130 is formed on the lower side of the support frame coupling portion 120.
  • the grid coupling portion 130 is a portion where the side body 110 is coupled to the grid portion 400.
  • the grid coupling portion 130 is formed through the side body 110 in the thickness direction, in the left and right directions in the illustrated embodiment.
  • the grid coupling protrusion 450 of the grid unit 400 is inserted and coupled to the grid coupling unit 130.
  • the grid coupling portion 130 may have any shape capable of accommodating the grid coupling protrusion 450.
  • the grid coupling portion 130 is a space having a rectangular cross-section where the length in the vertical direction is longer than the length in the front-to-back direction.
  • the shape of the grid coupling portion 130 may change depending on the shape of the grid coupling protrusion 450.
  • the grid coupling portion 130 is formed through the side body 110. At this time, the grid coupling portion 130 may be located in the middle portion of the side body 110.
  • the grid coupling portion 130 may be divided into a plurality of groups. Different grid coupling protrusions 450 may be inserted and coupled to the plurality of groups of grid coupling portions 130, respectively.
  • the grid coupling portion 130 is divided into three groups including a first grid coupling portion 131, a second grid coupling portion 132, and a third grid coupling portion 133.
  • a plurality of first grid coupling parts 131, second grid coupling parts 132, and third grid coupling parts 133 may each be provided.
  • the first to third grid coupling portions 131, 132, and 133 each include ten through holes spaced apart from each other in the front-back direction.
  • a first grid coupling protrusion 451 is inserted and coupled to the first grid coupling portion 131.
  • the first grid coupling part 131 is located at the uppermost side among the plurality of groups of grid coupling parts 130.
  • the first grid coupling portion 131 extends obliquely at a predetermined angle with respect to the vertical direction. In the illustrated embodiment, the first grid coupling portion 131 extends obliquely upward toward the rear and downward toward the front.
  • the second grid coupling part 132 is located below the first grid coupling part 131.
  • a second grid coupling protrusion 452 is inserted and coupled to the second grid coupling portion 132.
  • the second grid coupling portion 132 is located between the first grid coupling portion 131 and the third grid coupling portion 133 along the vertical direction of the side body 110.
  • the second grid coupling portion 132 extends obliquely at a predetermined angle with respect to the vertical direction. In the illustrated embodiment, the second grid coupling portion 132 extends obliquely upward toward the rear and downward toward the front.
  • the third grid coupling part 133 is located below the second grid coupling part 132.
  • a third grid coupling protrusion 453 is inserted and coupled to the third grid coupling portion 133.
  • the third grid coupling portion 133 is located on the lower side of the second grid coupling portion 132 along the vertical direction of the side body 110. In other words, the third grid coupling portion 133 is the grid coupling portion 130. ) is located at the bottom.
  • the third grid coupling portion 133 extends obliquely at a predetermined angle with respect to the vertical direction. In the illustrated embodiment, the third grid coupling portion 133 extends obliquely upward at the rear and downward at the front.
  • the number, arrangement method, and shape of the above-described first to third grid coupling parts 131, 132, and 133 depend on the number of grid parts 400 and the arrangement method and shape of the grid coupling protrusions 451, 452, and 453. can be changed.
  • the arc runner coupling portion 140 is formed on the rear side in the direction in which the plurality of grid coupling portions 130 are arranged side by side.
  • the arc runner coupling portion 140 is a portion where the side body 110 is coupled to the arc runner 500.
  • the arc runner coupling portion 140 is formed through the side body 110 in the thickness direction, in the left and right directions in the illustrated embodiment.
  • the arc runner protrusion 520 of the arc runner 500 is inserted and coupled to the arc runner coupling portion 140.
  • the arc runner coupling portion 140 may have any shape capable of accommodating the arc runner protrusion 520.
  • the arc runner coupling portion 140 is a space having a rectangular cross-section in which the length in the vertical direction is longer than the length in the front-to-back direction.
  • the shape of the arc runner coupling portion 140 may change depending on the shape of the arc runner protrusion 520.
  • the arc runner coupling portion 140 is formed through the side body 110. At this time, the arc runner coupling portion 140 may be located close to one end in the longitudinal direction of the side body 110, or, in the illustrated embodiment, close to the rear end.
  • a plurality of arc runner coupling parts 140 may be provided.
  • the plurality of arc runner coupling portions 140 may be spaced apart from each other and may be respectively coupled to the plurality of arc runner protrusions 520.
  • two arc runner coupling portions 140 are formed and spaced apart in the height direction of the side body 110, that is, in the vertical direction.
  • the number and arrangement method of the arc runner coupling portions 140 may vary depending on the number and arrangement method of the arc runner protrusions 520.
  • a side fastening hole 150 is formed on the lower side of the grid coupling portion 130.
  • the side fastening hole 150 is a part where the side body 110 is coupled to the support frame 200 and the arc guide 600.
  • the side fastening hole 150 is formed through the side body 110 in the thickness direction, in the left and right directions in the illustrated embodiment.
  • a side fastening member 160 that penetrates the first support fastening hole 271a of the support frame 200 and the external fastening hole 616 of the arc guide 600 is inserted and coupled to the side fastening hole 150.
  • the side fastening hole 150 may be screw-fitted with the side fastening member 160.
  • threads may be formed on the inner periphery of the side fastening hole 150.
  • the side fastening hole 150 may be divided into a plurality of parts.
  • a first side fastening member 161 that couples the support frame 200 and the side frame 100 may be coupled to one of the plurality of side fastening holes 150.
  • a second side fastening member 162 that couples the arc guide 600 and the side frame 100 may be coupled to another one of the plurality of side fastening holes 150.
  • the side fastening hole 150 includes a first side fastening hole 151 and a second side fastening hole 152.
  • the first side fastening hole 151 is coupled to the first side fastening member 161 that couples the side body 110 and the support frame 200.
  • the first side fastening hole 151 is located on one side of the side body 110 facing the support frame 200, close to the upper end in the illustrated embodiment.
  • the first side fastening hole 151 may be located close to the support frame coupling portion 120. In the illustrated embodiment, the first side fastening hole 151 is located between a pair of support frame coupling portions 120.
  • the first side fastening hole 151 may be of any shape capable of being penetrated and coupled to the first side fastening member 161.
  • the first side fastening hole 151 has a circular cross-section and a cylindrical shape with a thickness in the left and right directions.
  • the second side fastening hole 152 is coupled to the second side fastening member 162 that couples the side body 110 and the arc guide 600.
  • the second side fastening hole 152 is located on the other side of the side body 110 facing the arc guide 600, close to the lower end in the illustrated embodiment.
  • a plurality of second side fastening holes 152 may be formed.
  • the plurality of second side fastening holes 152 may be disposed at different positions and each may be coupled to the plurality of second side fastening holes 152.
  • a pair of second side fastening holes 152 are provided and positioned close to the front and rear ends of the side body 110, respectively.
  • the number and arrangement method of the second side fastening holes 152 may vary depending on the number of external fastening holes 616 and the second side fastening members 162 of the arc guide 600.
  • the side fastening member 160 couples the side body 110 to the support frame 200 and the arc guide 600.
  • the side fastening member 160 penetrates the side body 110 and may be inserted and coupled to the support frame 200 and the arc guide 600.
  • the side fastening member 160 may be provided in any shape capable of coupling the side body 110 with the support frame 200 and the arc guide 600.
  • the side fastening member 160 is provided as a screw member and may be screwed to the side body 110, the support frame 200, and the arc guide 600, respectively.
  • a plurality of side fastening members 160 may be provided. One of the plurality of side fastening members 160 may couple the side body 110 and the support frame 200. Another one of the plurality of side fastening members 160 may couple the side body 110 and the arc guide 600.
  • the side fastening member 160 includes a first side fastening member 161 and a second side fastening member 162.
  • the first side fastening member 161 penetrates the first side fastening hole 151 and is coupled to the first support fastening hole 217a of the support frame 200.
  • the first side fastening member 161 couples the side body 110 and the support frame 200.
  • the second side fastening member 162 penetrates the second side fastening hole 152 and is coupled to the external fastening hole 616 of the arc guide 600.
  • the second side fastening member 162 couples the side body 110 and the arc guide 600.
  • a plurality of second side fastening members 162 may be provided.
  • the plurality of second side fastening members 162 may be respectively coupled to the plurality of second side fastening holes 152 and external fastening holes 616.
  • a pair of second side fastening members 162 are provided and each is coupled to a plurality of second side fastening holes 152 and a plurality of external fastening holes 616.
  • the support frame 200 combines the side frame 100 and the cover frame 300.
  • a space is formed inside the support frame 200 to form a path through which the generated arc is extinguished and discharged.
  • the space of the support frame 200 may be provided with a member for filtering foreign substances mixed in the extinguished arc.
  • the support frame 200 is coupled to the side frame 100.
  • the support frame 200 includes the first and second side frames 100a and 100b. can be combined with each.
  • the left and right portions of the support frame 200 are coupled to the upper portion of the side frame 100.
  • the support frame 200 is coupled to the cover frame 300.
  • the upper portion of the support frame 200 and the space are arranged to be covered by the cover frame 300. Accordingly, arbitrary departure of the member accommodated in the space can be prevented.
  • the space may be communicated with the outside by the cover frame 300.
  • the support frame 200 includes a support body 210, a support plate 220, and a mesh plate 230.
  • the support body 210 forms the body of the support frame 200.
  • the support body 210 is a part where the support frame 200 is combined with other components of the arc extinguishing device 10. Specifically, the support body 210 is coupled to the side frame 100 and the cover frame 300.
  • a space is formed inside the support body 210.
  • a support plate 220 and a mesh plate 230 are located in the space.
  • a grid unit 400 is located below the space. The upper side of the space communicates with the outside of the cover frame 300. Accordingly, the space where the grid portion 400 is accommodated and the outside of the cover frame 300 are communicated, so that the generated arc is extinguished and discharged to the outside.
  • the support body 210 is coupled to the side frame 100 and the cover frame 300 and may be of any shape capable of communicating between the internal space and the outside of the arc extinguishing device 10.
  • the support body 210 has a rectangular pillar shape with a rectangular cross-section and a height in the vertical direction. At this time, a space is formed inside the support body 210 penetrating in its height direction, that is, in the vertical direction.
  • the support body 210 includes a plate receiving portion 211, a plate support portion 212, a buffer space 213, a support frame coupling protrusion 214, a grid support portion 215, and a cover frame support portion 216. ), a support fastening hole 217, and a gripping groove 218.
  • the plate receiving portion 211 accommodates the support plate 220 and the mesh plate 230.
  • the plate receiving portion 211 forms part of the space formed inside the support body 210.
  • the plate receiving portion 211 forms an upper space among the internal spaces of the support body 210.
  • the plate receiving portion 211 may be formed in a shape corresponding to the shape of the support plate 220 and the mesh plate 230.
  • the plate receiving portion 211 has a rectangular cross-section with a length in the front-back direction longer than the length in the left-right direction and is formed as a square pillar-shaped space with a height in the vertical direction.
  • the support plate 220 and the mesh plate 230 are received in the plate receiving portion 211 through one side.
  • the lower side is formed open.
  • the arc generated in the grid portion 400 may proceed to the plate receiving portion 211 through the other side.
  • a plate support portion 212 is located below the plate receiving portion 211.
  • the plate support part 212 supports the support plate 220 and the mesh plate 230 accommodated in the plate receiving part 211. Additionally, the plate support portion 212 extends to surround the buffer space 213 from the outside. In other words, the plate support portion 212 makes the cross-sectional area of the buffer space 213 smaller than the cross-sectional area of the plate receiving portion 211.
  • the support plate 220 and the mesh plate 230 accommodated in the plate receiving portion 211 are supported by the plate support portion 212 and are prevented from arbitrarily entering the buffer space 213.
  • the plate support portion 212 protrudes inward from the inner peripheral surface of the support body 210.
  • the plate support portion 212 extends along the inner periphery of the support body 210.
  • the plate support part 212 may be divided into a plurality of parts.
  • the plate support portion 212 may be divided into a pair of portions disposed in the front-to-back direction and extending in the left-right direction and a pair of other portions disposed in the left-right direction and extending in the front-to-back direction.
  • a first support fastening hole 217a is formed through the other portion of the pair of plate supports 212.
  • the space surrounded by the plate support 212 is defined as the buffer space 213.
  • the buffer space 213 forms another part of the space formed inside the support body 210.
  • the buffer space 213 forms a lower space among the spaces inside the support body 210.
  • the buffer space 213 is located between the plate receiving part 211 and the grid part 400.
  • the buffer space 213 is formed through the support frame 200 in the height direction, in the vertical direction in the illustrated embodiment.
  • the upper side is open and communicates with the plate receiving portion 211.
  • the other side of the buffer space 213 facing the grid unit 400, in the illustrated embodiment, the lower side is open and communicates with the grid unit 400.
  • the arc extinguished while passing through the grid portion 400 may be discharged to the outside through the buffer space 213 and the plate receiving portion 211 in that order.
  • the support frame coupling protrusion 214 is a part where the support body 210 is coupled to the side body 110.
  • the support frame coupling protrusion 214 is inserted and coupled to the support frame coupling portion 120 of the side frame 100.
  • the support frame coupling protrusion 214 is located on the outer peripheral surface of the support body 210.
  • the support frame coupling protrusion 214 protrudes outward from the support body 210.
  • the support frame coupling protrusion 214 may have any shape that can be inserted into the support frame coupling portion 120.
  • the support frame coupling protrusion 214 extends in the front-to-back direction, has a width in the left-right direction, and is formed to have a height in the vertical direction.
  • the support frame coupling protrusion 214 may have a different cross-sectional area along its height direction.
  • the upper cross-sectional area of the support frame coupling protrusion 214 is formed to be larger than the lower cross-sectional area.
  • one outer surface of the support frame coupling protrusion 214 extends obliquely toward the lower interior.
  • the support frame coupling protrusion 214 can be easily inserted and coupled to the support frame coupling portion 120.
  • the support frame coupling protrusion 214 inserted into the support frame coupling portion 120 does not arbitrarily separate from the support frame coupling portion 120 without external force.
  • a plurality of support frame coupling protrusions 214 may be formed.
  • the plurality of support frame coupling protrusions 214 may be spaced apart from each other and disposed at different positions, and may be respectively coupled to the plurality of support frame coupling portions 120.
  • a pair of support frame coupling protrusions 214 are provided on each of the left and right outer surfaces of the support body 210, for a total of four pairs. At this time, each pair of support frame coupling protrusions 214 formed on the left and right outer surfaces of the support body 210 are arranged to be spaced apart from each other in the front-back direction.
  • the number and arrangement method of the support frame coupling protrusions 214 may vary depending on the number and arrangement method of the support frame coupling portions 120.
  • the grid support portion 215 is located close to the support frame engaging protrusion 214.
  • the grid support unit 215 supports the grid unit 400 in its arrangement direction, in the front-to-back direction in the illustrated embodiment.
  • the grid support unit 215 supports the grid unit 400 on one side of the grid unit 400 in its extending direction, in the illustrated embodiment, on the upper side.
  • the grid support portion 215 is provided on the support body 210.
  • the grid support unit 215 is located on one side of each side of the support body 210 facing the grid unit 400, in the illustrated embodiment, on the lower side.
  • a plurality of grid supports 215 may be provided.
  • the plurality of grid supports 215 may be located at each end in the direction in which the plurality of grid parts 400 are arranged side by side.
  • the grid support 215 includes a first grid support 215a located on the front side and a second grid support 215b located on the rear side.
  • the first grid support portion 215a is located on the front side of the support body 210.
  • the first grid support portion 215a forms one side in the longitudinal direction of the support body 210, the front side in the illustrated embodiment.
  • the first grid support portion 215a partially surrounds the plate receiving portion 211 and the buffer space 213. In the illustrated embodiment, the first grid support portion 215a surrounds the front side of the plate receiving portion 211 and the buffer space 213. In other words, the first grid support 215a forms the front side of the support body 210.
  • the first grid support portion 215a may include a rib (reference numeral not assigned) extending toward the plate receiving portion 211 or the buffer space 213.
  • the ribs are configured to support the first grid 400a provided in the grid unit 400.
  • the first grid support part 215a faces the second grid support part 215b with the plate receiving part 211 and the buffer space 213 interposed therebetween.
  • the second grid support portion 215b is located on the rear side of the support body 210.
  • the second grid support portion 215b forms the other side in the longitudinal direction of the support body 210, the rear side in the illustrated embodiment.
  • the second grid support portion 215b partially surrounds the plate receiving portion 211 and the buffer space 213.
  • the second grid support portion 215b surrounds the rear side of the plate receiving portion 211 and the buffer space 213.
  • the second grid support 215b forms the rear side of the support body 210.
  • the cover frame support portion 216 supports the cover frame 300 coupled to the support frame 200. By the cover frame support portion 216, random shaking and separation of the cover frame 300 coupled to the support frame 200 can be prevented.
  • the cover frame support portion 216 is formed on one side of each side of the support body 210 facing the cover frame 300, or on the upper side in the illustrated embodiment.
  • the cover frame support portion 216 extends in the direction in which the support body 210 extends, in the front-to-back direction in the illustrated embodiment. In the illustrated embodiment, the cover frame support portion 216 protrudes upward from the upper surface of the support body 210.
  • a plurality of cover frame supports 216 may be provided.
  • the plurality of cover frame supports 216 may be spaced apart from each other and support the cover frame 300 at different positions.
  • a pair of cover frame supports 216 are provided and formed on the left and right sides of the support body 210, respectively.
  • a pair of cover frame supports 216 are arranged to face each other with the plate receiving part 211 sandwiched between them.
  • a pair of cover frame supports 216 support both sides of the cover frame 300.
  • a pair of cover frame supports 216 support the left and right sides of the cover frame 300.
  • the support fastening hole 217 is a part where the support frame 200 is coupled with other components.
  • the side fastening member 160 and the cover fastening member 350 are coupled to the support fastening hole 217.
  • the support fastening hole 217 is recessed or formed through the support body 210.
  • the support fastening hole 217 may be formed in any shape to which the side fastening member 160 or the cover fastening member 350 can be coupled.
  • the support fastening holes 217 may be provided in multiple groups.
  • a first side fastening member 161 that couples the side frame 100 and the support body 210 may be coupled to any one of the plurality of groups of support fastening holes 217.
  • a cover fastening member 350 that couples the support body 210 to the cover frame 300 may be coupled to another group of the plurality of groups of support fastening holes 217 .
  • the support fastening hole 217 includes a first support fastening hole 217a and a second support fastening hole 217b.
  • a first side fastening member 161 that couples the side body 110 and the support body 210 is coupled to the first support fastening hole 217a.
  • the first support fastening hole 217a is formed through a pair of relatively long outer circumferences of the support body 210, the left and right outer circumferences in the illustrated embodiment, in the thickness direction.
  • the first side fastening member 161 may be inserted and coupled to the first support fastening hole 217a.
  • the first side fastening member 161 may be screwed to the first support fastening hole 217a.
  • a screw thread may be formed on the outer periphery of the first support fastening hole 217a.
  • a plurality of first support fastening holes 217a may be formed.
  • a plurality of first support fastening holes 217a may be formed on a plurality of outer circumferences of the support body 210, respectively.
  • a pair of first support fastening holes 217a are provided and formed through the left and right outer peripheries of the support body 210, respectively.
  • the first support fastening hole 217a may extend to the plate support portion 212 formed inside the support body 210. Accordingly, the first support fastening hole 217a may communicate with the buffer space 213 and the radial outer side of the support body 210.
  • a cover fastening member 350 that couples the support body 210 and the cover frame 300 is coupled to the second support fastening hole 217b.
  • the second support fastening hole 217b is formed through or recessed on one side of the support body 210 facing the cover frame 300, or, in the illustrated embodiment, on the upper side.
  • the cover fastening member 350 may be inserted and coupled to the second support fastening hole 217b.
  • the cover fastening member 350 may be screwed to the second support fastening hole 217b.
  • a screw thread may be formed on the outer periphery of the second support fastening hole 217b.
  • a plurality of second support fastening holes 217b may be formed.
  • a plurality of second support fastening holes 217b may be formed at different positions on the upper surface of the support body 210, respectively.
  • four second support fastening holes 217b are provided and are located close to each corner of the upper surface of the support body 210.
  • the support plate 220 partially communicates with the space where the grid portion 400 is located and the outside of the arc extinguishing device 10.
  • the support plate 220 supports the mesh plate 230 from the lower side.
  • the support plate 220 is accommodated in the plate receiving portion 211. At this time, the outer circumference of the support plate 220 is supported by the plate support portion 212, so the support plate 220 does not advance into the buffer space 213.
  • the support plate 220 may be formed in a shape corresponding to the cross-sectional shape of the plate receiving portion 211.
  • the support plate 220 has a rectangular plate shape, has a cross-section with a protrusion formed at one end in the extending direction and a depression formed at the other end in the extending direction, and is formed to have a thickness in the vertical direction. .
  • the support plate 220 supports the mesh plate 230 from the lower side. Due to the support plate 220, the mesh plate 230 also does not advance into the buffer space 213.
  • the support plate 220 includes a support communication hole 221 and a plate groove 222.
  • the support communication hole 221 is formed through the inside of the support plate 220 to partially communicate with the space where the grid portion 400 is located and the outside of the arc extinguishing device 10.
  • the arc generated and extinguished in the grid unit 400 may sequentially pass through the support communication hole 221 and the mesh plate 230 and be discharged to the outside.
  • a plurality of support communication holes 221 may be formed.
  • the plurality of support communication holes 221 are spaced apart from each other and can communicate with the outside and the space where the grid unit 400 is located at different positions.
  • the plurality of support communication holes 221 are located biased toward the front side so as to be opposed to the arc runner 500 located at the rear side.
  • the fixed contact point and the movable contact point are located opposite to the arc runner 500.
  • the support communication hole 221 is not formed in the portion of the support plate 220 located above the fixed contact point and the movable contact point. Accordingly, the space between the support communication hole 221 and the fixed contact point and the movable contact point is partially sealed, so that the pressure of the initial arc generated can be quickly increased.
  • the plate groove 222 is recessed at a corner of the other end of the support plate 220 in the direction in which it extends. The operator can easily withdraw the support plate 220 by inserting a finger or a tool into the plate groove 222.
  • the mesh plate 230 is configured to filter out foreign substances remaining in the arc that is extinguished and discharged. Foreign substances remaining in the arc are prevented from being arbitrarily discharged to the outside of the arc extinguishing device 10 by the mesh plate 230. Accordingly, damage to other components of the arc extinguishing device 10 or the circuit breaker (not shown) due to foreign substances, etc. can be prevented.
  • the mesh plate 230 is accommodated in the plate receiving portion 211. At this time, the mesh plate 230 is arranged to cover the support plate 220 and is supported by the support plate 220.
  • the mesh plate 230 may be accommodated in the plate receiving portion 211 and may be provided in any shape capable of filtering out foreign substances remaining in the arc.
  • the mesh plate 230 is formed in a square plate shape to correspond to the support plate 220.
  • a plurality of mesh plates 230 may be provided.
  • the plurality of mesh plates 230 are stacked in the thickness direction, so that foreign substances remaining in the arc passing through them can be filtered, respectively.
  • six mesh plates 230 are provided and are stacked in the vertical direction. Accordingly, the arc passing through the mesh plate 230 may be filtered multiple times and discharged to the outside of the arc extinguishing device 10.
  • the mesh plate 230 located at the bottom is supported by the support plate 220.
  • the mesh plate 230 located at the uppermost side is covered by the cover frame 300.
  • the mesh plate 230 includes a mesh through hole 231 and a mesh rib 232.
  • the mesh through hole 231 is formed through the mesh plate 230 in the thickness direction, forming a passage through which the arc can pass.
  • the mesh through-hole 231 is defined by being surrounded by the mesh rib 232.
  • the mesh through hole 231 may be of any shape that allows the arc to pass through, but blocks the passage of foreign substances remaining in the arc.
  • the mesh through-hole 231 is a rectangular pillar-shaped space with a rectangular cross-section and height in the vertical direction.
  • the mesh through-hole 231 is surrounded by the mesh rib 232.
  • the mesh ribs 232 are provided in plural pieces extending in the longitudinal and width directions of the mesh plate 230. At this time, the mesh ribs 232 extending in the same direction are spaced apart from each other to form a mesh through-hole 231 therebetween.
  • a plurality of mesh through-holes 231 and mesh ribs 232 may be formed.
  • a plurality of mesh through-holes 231 and a plurality of mesh ribs 232 may be alternately arranged along the longitudinal and width directions of the mesh plate 230.
  • the plurality of mesh through-holes 231 and the plurality of mesh ribs 232 formed in each of the plurality of mesh plates 230 to be stacked may be arranged alternately along the stacking direction, the up and down direction in the illustrated embodiment. You can.
  • the arc that passes through the mesh through-hole 231 formed in one mesh plate 230 may proceed in the horizontal direction and then pass through the mesh through-hole 231 formed in the other mesh plate 230. Accordingly, the filtering effect of foreign substances remaining in the arc can be improved.
  • the cover frame 300 covers the support frame 200 and is coupled to the support frame 200.
  • the cover frame 300 supports the support plate 220 and the mesh plate 230 provided on the support frame 200 from the upper side. Even if a blocking operation is performed and pressure is generated, the cover frame 300 can prevent the support plate 220 and the mesh plate 230 from being randomly separated.
  • the cover frame 300 is coupled to the support frame 200.
  • a plurality of through holes i.e., cover through holes 320, which will be described later
  • the internal space of the support body 210 i.e., the plate receiving portion 211 and the buffer space 213 are formed inside the cover frame 300.
  • the arc extinguished while passing through the grid portion 400 may be discharged to the outside through the support frame 200 and the cover frame 300 in that order.
  • the cover frame 300 includes a cover body 310, a cover through hole 320, a cover rib 330, a cover fastening hole 340, and a cover fastening member 350. Includes.
  • the cover body 310 forms the body of the cover frame 300.
  • the cover body 310 is formed in a shape corresponding to the support body 210, covers the space formed inside the support body 210, and can be coupled to the support body 210.
  • the cover body 310 has a polygonal cross-section where the length in the front-to-back direction is longer than the length in the left-right direction and is formed to have a thickness in the vertical direction.
  • a cover through hole 320 and a cover rib 330 are provided inside the cover body 310. Additionally, cover fastening holes 340 are disposed close to each corner of the cover body 310.
  • the cover through-hole 320 is formed through the inside of the cover body 310 to communicate with the interior space of the support body 210 and the outside.
  • the arc that has passed through the support plate 220 and the mesh plate 230 accommodated in the support body 210 may pass through the cover through hole 320 and be discharged to the outside of the arc extinguishing device 10 .
  • the cover through hole 320 is formed through the cover body 310 in the thickness direction, in the vertical direction in the illustrated embodiment.
  • One end of the cover penetration hole 320 in the penetration direction, in the illustrated embodiment, is open and communicates with the outside.
  • the other end of the cover through hole 320 in the penetration direction, in the illustrated embodiment, is open and communicates with the internal space of the support body 210.
  • the cover through-hole 320 is surrounded by the cover rib 330.
  • the cover rib 330 extends in the longitudinal and width directions of the cover body 310, in the front-back direction and the left-right direction in the illustrated embodiment, and surrounds the cover rib 330 in the horizontal direction.
  • the cover through-hole 320 may be of any shape capable of communicating between the internal space of the support body 210 and the outside of the arc extinguishing device 10.
  • the cover through-hole 320 is formed as a rectangular plate-shaped space with a rectangular cross-section and a thickness in the vertical direction.
  • a plurality of cover through-holes 320 and cover ribs 330 may each be provided.
  • a plurality of cover through-holes 320 and a plurality of cover ribs 330 may be alternately arranged along the longitudinal and width directions of the cover body 310.
  • cover through-holes 320 are formed, three in the front-back direction and three in the left-right direction.
  • the cover ribs 330 extend between cover through-holes 320 arranged close to each other.
  • the cover fastening hole 340 is a part where fastening members that couple the cover frame 300 with other components of the circuit breaker (not shown) and the support frame 200 are coupled.
  • the cover fastening hole 340 is formed through the cover body 310 in the thickness direction, in the vertical direction in the illustrated embodiment.
  • a plurality of cover fastening holes 340 may be formed.
  • a plurality of cover fastening holes 340 are formed at different positions, so that a plurality of fastening members can pass through the cover body 310.
  • the cover fastening hole 340 may be screwed to the fastening member.
  • a screw thread may be formed on the inner circumference of the cover fastening hole 340.
  • the cover fastening hole 340 includes a first cover fastening hole 341 and a second cover fastening hole 342.
  • the first cover fastening hole 341 is coupled with a fastening member that couples the arc extinguishing device 10 with a circuit breaker (not shown).
  • the first cover fastening hole 341 is formed through the cover body 310 in the thickness direction, in the vertical direction in the illustrated embodiment.
  • a plurality of first cover fastening holes 341 may be formed.
  • a plurality of first cover fastening holes 341 may be formed at different positions.
  • two first cover fastening holes 341 are formed and are located close to each end in the longitudinal direction of the cover body 310, that is, the front end and the rear end, respectively.
  • the second cover fastening hole 342 is coupled with a cover fastening member 350 that couples the cover frame 300 to the support frame 200.
  • the second cover fastening hole 342 is formed through the cover body 310 in the thickness direction, in the vertical direction in the illustrated embodiment.
  • a plurality of second cover fastening holes 342 may be formed.
  • a plurality of second cover fastening holes 342 may be formed at different positions. In the illustrated embodiment, four second cover fastening holes 342 are formed and located close to each corner of the cover body 310.
  • the cover fastening member 350 couples the cover frame 300 to the support frame 200.
  • the cover fastening member 350 is coupled through the cover fastening hole 340.
  • the cover fastening member 350 may be provided in any shape capable of coupling the cover frame 300 to the support frame 200.
  • the cover fastening member 350 may be provided as a screw member with threads formed on its outer circumference.
  • a plurality of cover fastening members 350 may be provided.
  • the plurality of cover fastening members 350 may respectively couple the cover frame 300 to the support frame 200.
  • cover fastening members 350 are provided and are respectively coupled to the four second cover fastening holes 342 and the second support fastening holes 217b.
  • the grid unit 400 extinguishes an arc formed when the fixed contact point and the movable contact point are spaced apart while current is applied.
  • the generated arc is cooled, extended, moved, divided, and discharged to the outside of the arc extinguishing device 10 along the grid portion 400. Therefore, it can be said that the grid unit 400 substantially performs the function of extinguishing the arc.
  • the grid portion 400 is coupled to the side frame 100. Each end of the grid portion 400 in the width direction is supported by a pair of side frames 100a and 100b.
  • the grid portion 400 is partially accommodated in the support frame 200.
  • the upper side of the grid portion 400 is partially accommodated in the buffer space 213 of the support frame 200.
  • the grid portion 400 is coupled to the arc guide 600.
  • the arc generated by the arc guide 600 can be supplied with sufficient energy to be extended, divided, and extinguished in the space formed between the plurality of grid units 400.
  • a plurality of grid units 400 may be provided.
  • the plurality of grid units 400 may be arranged side by side and spaced apart from each other in the direction of movement of the movable contact point, in the front-to-back direction in the illustrated embodiment.
  • the generated arc passes through each space formed between the plurality of grid units 400 and can be split, cooled, and extinguished.
  • the grid unit 400 may be divided into a plurality of units depending on its shape.
  • the plurality of grid units 400 may be arranged to be spaced apart from each other in the above-described direction, that is, the front-back direction.
  • three grid units 400 are provided, including a first grid 400a, a second grid 400b, and a third grid 400c.
  • the first grid 400a is located at one end in the direction in which the plurality of grid units 400 are arranged side by side, or at the front end in the illustrated embodiment.
  • the first grid 400a is disposed closest to the fixed contact point.
  • the second grid 400b and the third grid 400c are located on the rear side of the first grid 400b. At this time, the second grid 400b and the third grid 400c are alternately arranged in the direction in which the plurality of grid units 400 are arranged side by side, in the illustrated embodiment, from the front side to the rear side. .
  • first grid 400a there is a single first grid 400a, and a plurality of second grids 400b and 400c are arranged alternately along the arrangement direction.
  • the practical benefit of distinguishing between the first grid 400a and the second and third grids 400b and 400c lies in the difference in the shape of the grid arm 420, which will be described later.
  • the grid arms 420 of the first grid 400a are formed to be smaller than the grid arms 420 of the second and third grids 400b and 400c.
  • the grid arm 420 of the first grid 400a has its width (i.e., length in the left and right directions) and extension length (i.e., length in the vertical direction) relative to the second and third grids 400b and 400c. It is formed shorter than before.
  • sufficient space can be secured for the movable contact point and the movable contact base (M.R.) to move, and sufficient space for the arc guide 600 to be coupled can also be secured.
  • the first to third grids 400a, 400b, and 400c differ in the shape of the grid arm 420 described above, but have the same other structures and functions. Accordingly, in the following description, the same description will be collectively referred to as the grid unit 400.
  • the grid portion 400 includes a grid body 410, a grid arm 420, an arc induction space 430, an arc extension space 440, and a grid coupling protrusion 450. Includes.
  • the grid body 410 forms the body of the grid unit 400.
  • the grid body 410 substantially performs the function of splitting, cooling, and extinguishing the arc.
  • the grid body 410 may be provided in a plate shape.
  • the grid body 410 is provided in a square plate shape where the length in the left and right directions is longer than the length in the up and down directions.
  • Grid body 410 is continuous with grid arm 420.
  • the lower side of the grid body 410 is continuous with the upper side of the grid arm 420.
  • Grid body 410 partially surrounds arc guiding space 430 and arc extension space 440. Specifically, in the illustrated embodiment, the grid body 410 of the first grid 400a surrounds the upper side of the arc extension space 440. The grid bodies 410 of the second and third grids 400b and 400c surround the upper sides of the arc induction space 430 and the arc extension space 440.
  • First and second grid coupling protrusions 451 and 452 of the grid coupling protrusion 450 are provided at each end of the grid body 410 in the width direction.
  • Grid arm 420 is continuous with grid body 410. Grid arm 420 extends from the lower end of grid body 410 and partially surrounds arc guiding space 430 or arc extension space 440.
  • the grid arm 420 is coupled with the arc guide 600.
  • the arc guide 600 coupled to the grid arm 420 may be coupled to and supported by the side frame 100.
  • a plurality of grid arms 420 may be formed.
  • the plurality of grid arms 420 may be spaced apart from each other and respectively coupled to the grid body 410 at different positions.
  • a pair is provided, including a first grid arm 421 located on the left side and a second grid arm 422 located on the right side.
  • the first and second grid arms 421 and 422 are arranged to be spaced apart in the width direction of the grid body 410, that is, in the left and right directions. In other words, the first and second grid arms 421 and 422 are arranged to face each other with the arc induction space 430 or the arc extension space 440 interposed therebetween.
  • the pair of grid arms 420 provided in the first grid 400a have a width and width compared to the pair of grid arms 420 provided in the second and third grids 400b and 400c.
  • the extension length is formed to be short.
  • a pair of grid arms 420 provided in the first grid 400a are arranged to face each other with an arc extension space 440 in between.
  • a pair of grid arms 420 provided in the second and third grids 400b and 400c are arranged to face each other with the arc induction space 430 and the arc extension space 440 in between.
  • a third grid coupling protrusion 453 of the grid coupling protrusions 450 is formed at the outer edge of the grid arm 420.
  • the arc inducing space 430 guides the arc generated by the fixed contact point and the movable contact point being spaced apart to the grid body 410 or the space between the grid bodies 410.
  • the arc guiding space 430 is partially surrounded by the grid body 410 and the grid arm 420.
  • the upper side of the arc guiding space 430 is partially surrounded by the grid body 410, and the left and right sides of the arc guiding space 430 are partially surrounded by a pair of grid arms 420.
  • the arc guiding space 430 is formed in the second and third grids 400b and 400c.
  • the arc induction space 430 is recessed at one side of the edge of the grid body 410 opposite to the support frame 200 or the cover frame 300, in the illustrated embodiment, at the lower edge.
  • the arc induction space 430 formed in the second and third grids 400b and 400c may be formed in different positions.
  • the first arc induction space 431 formed in the second grid 400b is located biased toward the first grid arm 421.
  • the first arc induction space 431 formed in the second grid 400b is located skewed to the left.
  • the second arc induction space 432 formed in the third grid 400c is located biased toward the second grid arm 422. In other words, the second arc induction space 432 formed in the third grid 400c is located skewed to the right.
  • the generated arc is alternately guided along the width direction of the grid portion 400 and may be guided into the grid body 410 or the space between the grid bodies 410. Accordingly, the process of extinguishing the generated arc can be effectively performed.
  • the arc extension space 440 is a space where the movable contact point M.R. is moved.
  • the arc generated between the movable contact point and the fixed contact point extends along the moving movable contact point M.R. and may be guided into the grid body 410 or the space between the grid bodies 410.
  • the arc extension space 440 is partially surrounded by the grid body 410 and the grid arm 420.
  • the upper side of the arc extension space 440 is surrounded by the grid body 410, and the width direction of the arc extension space 440, that is, the left and right sides, is surrounded by the grid arm 420.
  • the arc extension space 440 communicates with the arc induction space 430.
  • the arc extending from the arc extension space 440 may be guided to the grid body 410 or the space between the grid bodies 410 through the arc guidance space 430.
  • the grid coupling protrusion 450 is a part where the grid portion 400 is coupled to the side frame 100.
  • the grid coupling protrusion 450 is inserted and coupled to the grid coupling portion 130 formed on the side frame 100.
  • the grid coupling protrusion 450 is continuous with the grid body 410 and the grid arm 420.
  • the grid coupling protrusion 450 protrudes outward from each end in the width direction of the grid body 410 and the grid arm 420, at the left and right corners in the illustrated embodiment.
  • a plurality of grid coupling protrusions 450 may be provided.
  • the plurality of grid coupling protrusions 450 may be respectively coupled to the plurality of grid coupling portions 130.
  • the first grid coupling protrusion 451 is inserted and coupled to the first grid coupling portion 131.
  • the first grid coupling protrusion 451 is located at the uppermost side of the plurality of grid coupling protrusions 450.
  • the first grid coupling protrusion 451 protrudes outward from both edges of the grid body 410.
  • the second grid coupling protrusion 452 is inserted and coupled to the second grid coupling portion 132.
  • the second grid coupling protrusion 452 is located on the middle side of the plurality of grid coupling protrusions 450.
  • the second grid coupling protrusion 452 protrudes outward from both upper corners of the grid arm 420.
  • the third grid coupling protrusion 453 is inserted and coupled to the third grid coupling portion 133.
  • the third grid coupling protrusion 453 is located at the lowermost side of the plurality of grid coupling protrusions 450.
  • the third grid coupling protrusion 453 protrudes outward from both lower corners of the grid arm 420.
  • the number, shape, and arrangement method of the grid coupling protrusions 450 may vary depending on the number, shape, and arrangement method of the grid coupling portions 130.
  • the arc runner 500 guides the arc generated by separating the fixed contact point and the movable contact point into the arc inducing space 430.
  • the arc runner 500 is located on the downstream side of the generated arc, that is, furthest from the fixed contact point.
  • the arc runner 500 is located on the rear side of the arc extinguishing device 10 and is located close to the grid portion 400 located at the rearmost side among the plurality of grid portions 400.
  • the arc runner 500 is coupled to the side frame 100. Both sides of the arc runner 500 in the width direction are supported by a pair of side frames 100a and 100b.
  • the arc runner 500 includes an arc runner body 510, an arc runner protrusion 520, and an arc guiding member 530.
  • the arc runner body 510 forms the body of the arc runner 500.
  • the arc runner body 510 is continuous with other configurations of the arc runner 500.
  • the arc runner body 510 partially overlaps the grid portion 400 located at the rearmost side among the plurality of grid portions 400.
  • the arc runner body 510 is continuous with other configurations of the arc runner 500 and may be of any shape capable of guiding an arc.
  • the arc runner body 510 is provided in a square plate shape with a length in the left and right directions longer than a length in the up and down directions.
  • Arc runner protrusions 520 are formed at each end of the arc runner body 510 in the longitudinal direction, that is, at the left end and the right end.
  • the arc runner protrusion 520 is inserted and coupled to the arc runner coupling portion 140 of the side frame 100.
  • the arc runner 500 can be coupled to the side frame 100 and supported by the side frame 100.
  • the arc runner protrusion 520 is continuous with the arc runner body 510.
  • the arc runner protrusion 520 protrudes outward from each end in the longitudinal direction of the arc runner body 510, in the illustrated embodiment, the left end and the right end.
  • a plurality of arc runner protrusions 520 may be provided.
  • the plurality of arc runner protrusions 520 may be continuous with the arc runner body 510 at different positions. Additionally, the plurality of arc runner protrusions 520 may be respectively coupled to the plurality of arc runner coupling portions 140.
  • each pair of arc runner protrusions 520 is arranged to be spaced apart in the height direction of the arc runner body 510, or in the vertical direction in the illustrated embodiment.
  • the number and arrangement method of the arc runner protrusions 520 may vary depending on the number and arrangement method of the arc runner coupling portions 140.
  • the arc extinguishing device 10 includes an arc guide 600.
  • the arc guide 600 is configured to supply energy to extend and move the generated arc.
  • the arc guide 600 prevents damage to the grid portion 400 due to the generated arc, and allows the induced arc to extend along the plurality of grid portions 400 and be cooled, divided, and extinguished. .
  • the arc guide 600 is coupled to the side frame 100. Specifically, the second side fastening member 162 penetrates the second side fastening hole 152 and the external fastening hole 616 of the arc guide 600, respectively, to connect the arc guide 600 to the side frame 100. Combine.
  • the arc guide 600 is coupled to the grid portion 400. Specifically, the grid arm 420 is inserted and coupled to the inner arc guide 620 of the arc guide 600. Accordingly, damage to the grid arm 420 due to the arc is prevented, and the induced arc flows along the grid body 410 and can be effectively extinguished.
  • a plurality of arc guides 600 may be provided.
  • the plurality of arc guides 600 may be respectively combined with the plurality of side frames 100 and the plurality of grid arms 420.
  • two arc guides 600 are provided, including a first arc guide 600a located on the left side and a second arc guide 600b located on the right side.
  • the first arc guide 600a is coupled to the first side frame 100a and the first grid arm 421.
  • the second arc guide 600b is coupled to the second side frame 100b and the second grid arm 422.
  • the first arc guide 600a and the second arc guide 600b may be formed symmetrically with respect to the vertical direction.
  • the first arc guide 600a and the second arc guide 600b have some differences in arrangement position and direction, but their structures and functions are the same. Accordingly, in the following description, the first arc guide 600a and the second arc guide 600b will be collectively referred to as the arc guide 600.
  • the arc guide 600 may be divided into a plurality of configurations. Some of the plurality of components constituting the arc guide 600 may be configured to supply energy to the generated arc. Other parts of the plurality of components constituting the arc guide 600 may be configured to protect the plurality of grid units 400 and maintain an insulating state between the plurality of grid units 400.
  • External arc guide 610 forms one component of arc guide 600.
  • the outer arc guide 610 surrounds the inner arc guide 620 from the outside and is coupled to the inner arc guide 620. That is, the external arc guide 610 is a part of the arc guide 600 that is exposed to the outside.
  • the external arc guide 610 supplies energy to help move and extend the arc.
  • the external arc guide 610 is made of a material that generates gas by the heat of the generated arc.
  • the gas generated by the external arc guide 610 forms pressure and provides a conveying force to move the generated arc toward the grid unit 400.
  • the external arc guide 610 may be formed of any material that can generate gas by heat or pressure.
  • the external arc guide 610 is made of nylon, melamine, PA46, PA66, polyamide resin (PA), methyl methacrylate (MMA), and polyoxymethylene. It can be formed of any gassing material such as resin (polyoxymethylene, POM) or polybutyleneterephthalate (PBT).
  • each side of the external arc guide 610 may be formed open.
  • the upper side of the outer arc guide 610 is open and functions as a passage in which the inner arc guide 620 is accommodated.
  • the outside of the external arc guide 610 is formed open and covered with the side frame 100.
  • the external arc guide 610 has a first external surface 611, a second external surface 612, a third external surface 613, a fourth external surface 614, and an external space 615. and an external fastening hole 616.
  • the first outer surface 611 forms one side of the outer arc guide 610.
  • the first outer surface 611 forms the rear side surface of the outer arc guide 610.
  • the first outer surface 611 extends obliquely with respect to the vertical direction.
  • the first outer surface 611 surrounds the outer space 615 on the rear side.
  • the first outer surface 611 supports the inner arc guide 620 accommodated in the outer space 615 on the rear side.
  • the second outer surface 612 forms the other side of the outer arc guide 610.
  • the second outer surface 612 forms the lower surface of the outer arc guide 610.
  • the second outer surface 612 supports the inner arc guide 620 accommodated in the outer space 615 from the lower side.
  • the second outer surface 612 surrounds the outer space 615 from the lower side.
  • the second outer surface 612 extends at a predetermined angle with the first outer surface 611. In one embodiment, second outer surface 612 may extend horizontally. The second outer surface 612 extends in the longitudinal direction of the outer arc guide 610, in the illustrated embodiment, in the front-to-back direction.
  • the second outer surface 612 may extend as long as the plurality of grid parts 400 are arranged.
  • the third outer face 613 forms another side of the outer arc guide 610.
  • the third outer surface 613 forms the front side surface of the outer arc guide 610.
  • the third outer surface 613 surrounds the outer space 615 on the front side.
  • the third outer surface 613 supports the inner arc guide 620 accommodated in the outer space 615 from the front side.
  • the third outer surface 613 extends at a predetermined angle with the second outer surface 612. In one embodiment, the third outer surface 613 may extend vertically.
  • the fourth outer face 614 forms another side of the outer arc guide 610 .
  • fourth outer surface 614 forms the inner side of outer arc guide 610.
  • the fourth outer surface 614 surrounds the outer space 615.
  • the fourth outer surface 614 supports the inner arc guide 620 accommodated in the outer space 615.
  • the inside of the internal arc guide 620 accommodated in the external space 615 is surrounded by the fourth external surface 614, and the outside is surrounded by the side frame 100. That is, the fourth external surface 614 is disposed to face the side frame 100 with the external space 615 and the internal arc guide 620 accommodated therebetween.
  • the fourth outer surface 614 is continuous with the first to third outer surfaces 611, 612, and 613, respectively. In one embodiment, the fourth outer surface 614 may be vertically continuous with respect to the first to third outer surfaces 611, 612, and 613.
  • the external space 615 is a space defined by being surrounded by the first to fourth external surfaces 611, 612, 613, and 614.
  • the external space 615 accommodates the internal arc guide 620.
  • each side of the external space 615 may be open.
  • the upper side of the external space 615 and one side (i.e., the outer side) facing the side frame 100 are open.
  • the external space 615 may be physically separated from the space where the arc is generated. That is, the external space 615 and the internal arc guide 620 accommodated in the external space 615 are physically separated by the first to fourth external surfaces 611, 612, 613, 614 and the side frame 100. .
  • a second side fastening member 162 that couples the external arc guide 610 to the side frame 100 is coupled to the external fastening hole 616.
  • the external fastening hole 616 is recessed on one side of each side of the external arc guide 610 facing the side frame 100, or at an outer corner in the illustrated embodiment.
  • the external fastening hole 616 may be screwed to the second side fastening member 162.
  • threads may be formed on the outer periphery of the external fastening hole 616.
  • a plurality of external fastening holes 616 may be formed.
  • a plurality of external fastening holes 616 may be located close to each end of the external arc guide 610 in the extension direction.
  • a pair of external fastening holes 616 are provided and positioned close to the first external surface 611 and the third external surface 613, respectively.
  • the internal arc guide 620 forms another configuration of the arc guide 600.
  • the internal arc guide 620 is accommodated in the external arc guide 610 and is not exposed to the outside. Accordingly, damage to the internal arc guide 620 due to the generated arc can be prevented.
  • the internal arc guide 620 may be formed of an insulating material or an arc resistance material. This is to move the arc induced into the arc induction space 430 to the nearby grid portion 400 along the grid body 410.
  • the arc tends to progress toward a peak. Therefore, if the internal arc guide 620 is not provided or the internal arc guide 620 is formed of an arc-friendly material, the arc flows through the grid arm 420, which is formed with a peak enhancement compared to the grid body 410. It may proceed to the grid unit 400.
  • the internal arc guide 620 formed of an arc-resistant material is provided, so that the arc guided to the grid arm 420 can be minimized.
  • the arc can proceed to another grid portion 400 through the grid body 410, thereby maximizing the cooling, splitting, and extinguishing effects of the arc.
  • the internal arc guide 620 may be formed of any material resistant to arcing.
  • the inner arc guide 620 may be formed of Bulk Molding Compound (BMC) material.
  • the inner arc guide 620 has a first inner surface 621, a second inner surface 622, a third inner surface 623, a grid receiving portion 624, and a guide rib 625. Includes.
  • the first inner surface 621 forms one surface of the inner arc guide 620.
  • the first inner surface 621 forms the rear side surface of the inner arc guide 620.
  • the first inner surface 621 extends obliquely with respect to the vertical direction.
  • the first inner surface 621 may be formed to correspond to the shape of the first outer surface 611 and the external fastening hole 616 formed close thereto.
  • the first inner surface 621 is supported by the first outer surface 611.
  • the second inner face 622 forms the other side of the inner arc guide 620.
  • second inner surface 622 forms the lower surface of inner arc guide 620.
  • the second inner surface 622 is continuous with the first inner surface 621 at a predetermined angle. In one embodiment, the second inner surface 622 may extend horizontally.
  • the second inner surface 622 extends in the longitudinal direction of the inner arc guide 620, in the front-to-back direction in the illustrated embodiment.
  • the second inner surface 622 is supported by the second outer surface 612.
  • the second inner surface 622 may be formed to correspond to the shape of the second outer surface 612. In one embodiment, the second inner surface 622 may extend beyond the length at which the plurality of grid parts 400 are arranged side by side.
  • the third inner face 623 forms another face of the inner arc guide 620.
  • the third inner surface 623 forms the front side surface of the inner arc guide 620.
  • the third inner surface 623 may extend vertically.
  • the third inner surface 623 may be formed to correspond to the shape of the third outer surface 613 and the external fastening hole 616 formed close thereto.
  • the third inner surface 623 is supported by the third outer surface 613.
  • the grid receiving portion 624 is a space that accommodates the grid arm 420 of the grid portion 400.
  • the grid receiving portion 624 is recessed on one side of each side of the internal arc guide 620 facing the grid portion 400, and in the illustrated embodiment, on the upper side.
  • the grid receiving portion 624 may extend obliquely with respect to the vertical direction. In the illustrated embodiment, the grid receiving portion 624 extends obliquely in a direction toward the lower side at the front and the upper side at the rear. The extension direction of the grid receiving portion 624 may change depending on the extension angle of the grid arm 420.
  • one side facing the grid portion 400 and the other side facing the side frame 100 may be open.
  • the top of the grid receiving portion 624 and the outside facing the side frame 100 are open.
  • a plurality of grid receiving portions 624 may be formed.
  • the plurality of grid receiving portions 624 may be arranged to be spaced apart from each other along the direction in which the internal arc guide 620 extends, in the front-to-back direction in the illustrated embodiment.
  • a total of ten grid receiving units 624 are formed and spaced apart from each other.
  • the number and arrangement method of the grid accommodation units 624 may change depending on the number and arrangement method of the grid units 400.
  • the grid receiving portion 624 may be divided into a plurality of parts.
  • the grid receiving portion 624 includes a single first grid receiving portion 624a located on the front side and a plurality of second grid receiving portions located on the rear side of the first grid receiving portion 624a. Includes (624b).
  • the first grid receiving portion 624a accommodates the grid arm 420 of the first grid 400a.
  • the second grid receiving portion 624b accommodates the grid arms 420 of the second and third grids 400b and 400c.
  • a guide rib 625 is located between the plurality of grid receiving portions 624.
  • the guide ribs 625 are formed between the plurality of grid accommodating parts 624 to physically partition the grid accommodating parts 624 arranged close to each other. Accordingly, direct contact between the plurality of grid units 400 accommodated in each grid accommodation unit 624 can be prevented.
  • the guide rib 625 may be formed to correspond to the shape of the grid receiving portion 624 or the grid arm 420. In the illustrated embodiment, the guide ribs 625 extend obliquely in directions toward the lower side at the front and the upper side at the rear.
  • a plurality of grid receiving portions 624 and a plurality of guide ribs 625 are alternately arranged along the extension direction of the inner arc guide 620, in the front-back direction in the illustrated embodiment.
  • the first arc guide 600a and the second arc guide 600b include an external arc guide 610 formed of a gas generating material and an internal arc guide 620 formed of an arc-resistant material, respectively.
  • a single unit is provided. Accordingly, it will be understood that the arc guide 600, which includes the first arc guide 600a and the second arc guide 600b, is provided with a pair of external arc guides 610 and internal arc guides 620, respectively.
  • an additional structure formed of a gas-generating material or an arc-resistant material may be disposed between the outer arc guide 610 and the inner arc guide 620.
  • the arc extinguishing device 10 can provide energy to the generated arc.
  • the energy By the energy, the arc can be extended and moved toward the grid unit 400 and extinguished. Therefore, even when a small current is applied to the arc extinguishing device 10 according to an embodiment of the present invention and the energy of the arc itself is low, the generated arc can be effectively extinguished.
  • the arc extinguishing device 10 can prevent the generated arc from proceeding to the grid arm 420 of the grid unit 400. Accordingly, the generated arc can be moved to another grid unit 400 along the grid body 410 of the grid unit 400. Accordingly, the arc can be rapidly cooled, split and extinguished.
  • the arc extinguishing device 10 according to an embodiment of the present invention is shown in an installed state.
  • the contact point C is located between a pair of grid arms 420 and a pair of arc guides 600 coupled to the pair of grid arms 420.
  • the arc runner 500 and the grid portion 400 are located above the contact point C.
  • an arc path Arc extending along the contact point C of the movable contact band M.R. and progressing to the plurality of grid parts 400 is shown as an example.
  • the movable contact band (M.R) and the contact points (C) provided therewith are spaced apart from the fixed contact band (F.R) and the contact points (C) provided therein, an arc is generated and extended between each contact point (C).
  • the extended arc is divided into a plurality of grid parts 400 and the space formed between them, progresses, and is extinguished.
  • the external arc guide 610 coupled to the grid arm 420 generates gas by heat generated with the arc.
  • the pressure generated by the generated gas provides a transport force for the arc to move to the plurality of grid units 400 and the space formed between them.
  • the arc can pass through the grid unit 400 and be quickly extinguished and discharged to the outside.
  • FIG. 19 a process in which a generated arc progresses on a single grid unit 400 is exemplarily shown.
  • the arc guide 600 is coupled to the grid arm 420 corresponding to the cusp of the grid portion 400, thereby preventing the generated arc from progressing.
  • the internal arc guide 620 coupled to the grid arm 420 is formed of an arc-resistant material, so that arc progress or damage due to arc can be prevented.
  • the arc entering the grid portion 400 proceeds along the grid body 410, but does not proceed toward the grid arm 420.
  • the arc that progresses along the grid body 410 is moved to the grid body 410 of the nearby grid portion 400 and can be cooled, divided, and extinguished.
  • Arc extinguishing device 100 Side frame
  • 100a first side frame 100b: second side frame
  • side fastening member 161 first side fastening member
  • support body 211 plate receiving portion
  • Support frame coupling protrusion 215 Grid support
  • cover frame support 217 support fastener
  • first grid arm 422 second grid arm
  • Arc guidance space 431 First arc guidance space
  • Grid coupling protrusion 451 First grid coupling protrusion
  • Arc Runner 510 Arc Runner Body
  • Arc guide 600a First arc guide
  • first arc guide 610 outer arc guide
  • first external face 612 second external face
  • External space 616 External fastening hole
  • inner arc guide 621 first inner face

Landscapes

  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

L'invention concerne un dispositif d'extinction d'arc. Un dispositif d'extinction d'arc selon un aspect de la présente invention comprend : une partie grille positionnée à proximité d'un point de contact fixe externe et un point de contact mobile de façon à éteindre un arc généré lorsque le point de contact fixe et le point de contact mobile sont espacés ; et un guide d'arc qui est couplé à la partie grille et génère un gaz par réaction avec l'arc généré, la partie grille comprenant : un corps de grille qui forme le corps de la partie grille et qui est espacé du point de contact fixe et du point de contact mobile ; un bras de grille qui est continu avec le corps de grille et s'étend vers le point de contact fixe et le point de contact mobile ; et un espace d'extension d'arc qui est formé de façon à être partiellement entouré par le corps de grille et le bras de grille et à l'intérieur duquel le point de contact mobile est logé de façon mobile, le guide d'arc étant disposé pour entourer partiellement l'espace d'extension d'arc en étant couplé au bras de grille de façon à produire un gaz au moyen de la chaleur de l'arc généré
PCT/KR2023/010303 2022-10-18 2023-07-18 Dispositif d'extinction d'arc WO2024085365A1 (fr)

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KR1020220133995A KR20240053896A (ko) 2022-10-18 2022-10-18 아크 소호 장치
KR10-2022-0133995 2022-10-18

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Citations (5)

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Publication number Priority date Publication date Assignee Title
JP2004152703A (ja) * 2002-10-31 2004-05-27 Energy Support Corp 消弧装置
KR20060035194A (ko) * 2004-10-21 2006-04-26 엘에스산전 주식회사 배선용 차단기의 소호장치
JP2011228173A (ja) * 2010-04-21 2011-11-10 Kawamura Electric Inc 回路遮断器
KR20130089541A (ko) * 2012-02-02 2013-08-12 현대중공업 주식회사 배선용 차단기의 소호장치
KR20210111564A (ko) * 2020-03-03 2021-09-13 엘에스일렉트릭(주) 아크 소호 조립체

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101031975B1 (ko) 2009-10-28 2011-05-09 엘에스산전 주식회사 직류 개폐기의 아크 소호 장치
KR101986552B1 (ko) 2018-11-14 2019-06-07 엘에스산전 주식회사 직류용 기중차단기의 아크소호장치

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004152703A (ja) * 2002-10-31 2004-05-27 Energy Support Corp 消弧装置
KR20060035194A (ko) * 2004-10-21 2006-04-26 엘에스산전 주식회사 배선용 차단기의 소호장치
JP2011228173A (ja) * 2010-04-21 2011-11-10 Kawamura Electric Inc 回路遮断器
KR20130089541A (ko) * 2012-02-02 2013-08-12 현대중공업 주식회사 배선용 차단기의 소호장치
KR20210111564A (ko) * 2020-03-03 2021-09-13 엘에스일렉트릭(주) 아크 소호 조립체

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