EP2804196A1 - Molded case circuit breaker - Google Patents
Molded case circuit breaker Download PDFInfo
- Publication number
- EP2804196A1 EP2804196A1 EP12864991.0A EP12864991A EP2804196A1 EP 2804196 A1 EP2804196 A1 EP 2804196A1 EP 12864991 A EP12864991 A EP 12864991A EP 2804196 A1 EP2804196 A1 EP 2804196A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bars
- fixable
- movable
- circuit breaker
- contacts
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 239000011347 resin Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 3
- 239000012768 molten material Substances 0.000 abstract description 8
- 238000009413 insulation Methods 0.000 abstract description 7
- 230000010354 integration Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 7
- 230000002159 abnormal effect Effects 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/06—Housings; Casings; Bases; Mountings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
Definitions
- This application relates to a circuit breaker and more particularly to a circuit breaker that adopts a vertical coupling structure to seal each of components therein, each associated with a phase and prevents a molten material inflow thereinto to prevent an insulation performance decrease, the circuit breaker being adopted in an apparatus which may connect or disconnect a current path by a manual operation and may automatically disconnect a current in an abnormal status such as overload and short current fault.
- This application relates to a circuit breaker which particularly in an internal vertical coupling structure, may fix a plurality of fixable bars to a bottom base to form fixable contacts, arrange a plurality of movable bars thereon to form movable contacts and arrange arc chambers enclosing the fixable contacts and the movable contacts between the fixable contacts and movable contacts thereby the circuit breaker individually seals a plurality of fixable bars, a plurality of movable bars and a plurality of arc chambers
- Korean Patent Publication No. 10-2004-0079825 relates to a safety device of a circuit breaker. More particularly, the safety device is used to protect a user from a safety accident that may occur in a live wire state when external base installation and uninstallation of a plug-in type circuit breaker are in progress and used to interlock a switch of the circuit breaker in a trip state.
- Such disclosed technology includes a switch opening or closing a circuit and a crossbar actuating the switch at a trip position.
- the circuit breaker includes a pressure trip unit configured to move toward for pressing the crossbar to rotate a crossbar or for releasing to press the crossbar in order to actuate the switch to the trip position, a supporting member configured to be fixed at a bottom of the circuit breaker, a first lever configured to be rotatably supported by the supporting member and to provide an actuating force through one direction rotation when the circuit breaker is installed on an external base and another direction rotation when the circuit breaker is uninstalled on the external base, a spring configured to provide elastic force to rotate the first lever toward the another direction, a safety tool assembly wherein one terminal thereof is connected to the first lever and another terminal thereof being installed to press the pressure trip unit and wherein the safety tool assembly includes a second lever releasing the crossbar to release to press the pressure trip unit when the first lever rotates toward one direction and pressing the pressure trip unit to rotat
- the circuit breaker includes a fixable contact, a movable contact, a shaft rotatably supporting the movable contact, an insulation case rotatably supporting the shaft and a plurality of single-pole breaking units.
- the shaft corresponds to a cylindrical member and the shaft includes an edge unit projecting from circumstances to an axis and a rotation axis unit projecting from a center to the axis.
- the insulation case includes a circular raised unit and a bearing groove unit in order to prevent a gas leakage and rotatably support the shaft.
- the circular raised unit has a diameter being larger than that of the shaft and is raised toward the axis direction.
- the bearing groove unit has a predetermined height from the center of the circular raised unit to the axis direction to rotatably seal a rotation axis of the shaft.
- Korean Patent Publication No. 10-2004-0079825 discloses a circuit breaker using a pressurized gas being generated by an arc generation thereby the circuit breaker is compact and has high blocking performance.
- Such circuit breaker includes a fixable unit, a movable unit, a case and an exhaust pipe.
- the fixable unit has a fixed contact.
- the movable unit has a movable contact being connected with or disconnected from the fixed contact in one terminal thereof and a rotatable movable unit having a rotation center in another terminal thereof.
- the case forms a pressure accumulation space at one side of the arc generating position, the pressure accumulation space temporarily accumulating a pressurized gas pressurized by an arc and the arc being generated between the fixed contact and the movable contact when a current cuts off.
- the exhaust pipe is installed at another side of the arc generation position in the case so that the pressurized gas retained in the pressure accumulation space upon current cut-off is passed through between the fixed contact and the movable contact.
- the circuit breaker may connect or disconnect an electrical path by manual operation or electric operation and may automatically block a current when an abnormal state such as overload current and short current occurs.
- a molten material may flow in the circuit breaker in the abnormal state thereby an insulation performance may be decreased.
- the conventional circuit breaker assembles the movable contacts at a side to be sealed and insulated thereby the conventional circuit breaker requires separate modules for sealing each of components and assembly productivity thereof may be decreased.
- This application proposes to provide a circuit breaker preventing a molten material inflow thereinto through a seal and insulation of components, each associated with a phase when a short circuit failure occurs and preventing an insulating performance decrease through the molten material inflow.
- This application proposes to provide a circuit breaker shortening an arc extinguishing time through sealing components, each associated with a phase to increase internal pressure when a short circuit failure occurs thereby the circuit breaker increases short circuit performance.
- This application proposes to provide a circuit breaker implementing a sealing structure of components, each associated with a phase through a vertical integration of a bottom base and a top base thereby the circuit breaker has a simple structure and increases assembly productivity.
- a circuit breaker includes a plurality of fixable bars configured to form fixable contacts, a plurality of movable bars configured to be rotated through a switch to be connected to or disconnected with the plurality of the fixable bars and configured to form movable contacts opposing the fixable contacts, a plurality of arc chambers configured to cover contact parts of the plurality of the fixable bars and the plurality of the movable bars to remove an arc being generated on the contact parts, a bottom base configured to separately accommodate the plurality of the movable bars, the plurality of the fixable bars and the plurality of the arc chambers, each being in a rotation direction and configured to be integrally molded and a top base configured to form a pair with the bottom base to separately seal the plurality of the movable bars, the plurality of the fixable bars and the plurality of the arc chambers and to be integrally molded.
- the plurality of the fixable bars may be separately fixed to the bottom base.
- the plurality of the fixable bars may further include members bending the fixable contacts into U-shape.
- the plurality of the movable bars may be connected with a rotation axis providing a rotation center and a movable axis being connected with the switch thereby the plurality of the movable bars may move the movable axis through the switch to rotate the plurality of the movable bars through the rotation axis.
- the plurality of the arc chambers may have a structure layered with a lattice shaped plate to cover upper sides of the fixable contacts in the plurality of the fixable bars.
- the bottom base may include a fixing unit of the plurality of the fixable bars and a holding unit of the plurality of the movable bars and the bottom base may be molded by a curable resin.
- the top base may be divided into a section for separately sealing the plurality of the fixable bars, the plurality of the movable bars and the plurality of the arc chambers and the top base may be molded by the curable resin.
- the bottom base and the top base may be vertically linked.
- the switch may be installed on an upper side of the top base and rotate the plurality of the movable bars through the movable axis.
- the circuit breaker and related technologies may prevent molten material inflow in a circuit breaker through a separate seal and insulation of components, each associated with a phase when a short circuit failure occurs and prevent insulating performance decrease through the molten material inflow.
- the circuit breaker and related technologies may shorten an arc extinguishing time by an internal pressure increase through separately sealing components, each associated with a phase when a short circuit failure occurs thereby the circuit breaker may easily ensure short circuit performance.
- the circuit breaker and related technologies may implement a separate sealing structure of components, each associated with a phase through a vertical integration of a bottom base and a top base thereby the circuit breaker may have a simple structure and may increase assembly productivity.
- first and second can be used to refer to various components, but the components may not be limited to the above terms. The terms will be used to discriminate one component from the other component. For instance, the first component may be referred to the second component and vice versa without departing from the right of the disclosure.
- a component When a component is referred to as being “connected to” or “linked to” another component, the component may be directly connected to or linked to another component or an intervening component may be present therebetween. In contrast, if a component is referred to as being “directly connected to” or “directly linked to” another component, an intervening component may not be present therebetween.
- the terms used in the specification are for the purpose of explaining specific embodiments and have no intention to limit the disclosure. Unless the context indicates otherwise, the singular expression may include the plural expression.
- the term "include” or “has” will be used to refer to the feature, the number, the step, the operation, the component, the part or the combination thereof without excluding the presence or addition of one or more features, the numbers, the steps, the operations, the components, the parts or the combinations thereof.
- FIG. 1 is a perspective diagram illustrating a circuit breaker according to an example embodiment of the described technology and FIG. 2 is an exploded diagram illustrating an internal structure of a circuit breaker in FIG. 1 .
- a circuit breaker 100 includes a plurality of fixable bars 110, a plurality of movable bars 120, a plurality of arc chambers 130, a bottom base 140, a top base 150 and a switch 160.
- the circuit breaker 100 may actuate the plurality of the movable bars 120 by a movement of the switch 160 to connect or disconnect electrical path.
- the plurality of the fixable bars 110 forms fixable contacts.
- the plurality of the fixable bars 110 may be separately fixed into a fixing unit 141 of the bottom base 140.
- the plurality of the fixable bars 110 may further include members bending the fixable contacts into U-shape.
- the U-shape may wind current flow direction of the plurality of the fixable bars 110 and the plurality of the movable bars 120 to increase electric repulsion between the plurality of the fixable bars 110 and the plurality of the movable bars 120 in abnormal state.
- FIG. 3 is a perspective diagram illustrating an assembled form of an internal structure of a circuit breaker in FIG. 2 and FIG. 4 is an exploded diagram illustrating an actuation method of an internal structure in a circuit breaker in FIG. 3 .
- an internal structure of the circuit breaker 100 includes the plurality of the fixable bars 110, the plurality of the movable bars 120, the plurality of the arc chambers 130, the bottom base 140, the top base 150 and the switch 160.
- the plurality of the fixable bars 110 is projected between the bottom base 140 and the top base 150. In one embodiment, the plurality of the fixable bars 110 is projected through a groove formed by the bottom base 140. Projected parts of the plurality of the fixable bars 110 may be connected with external electrical path.
- the plurality of the movable bars 120 When the switch 160 is rotated to clockwise direction, the plurality of the movable bars 120 is rotated. Rotations of the plurality of the movable bars 120 are rotated at a rotation axis 121 to cause a movable axis 122 to lift the plurality of the movable bars 120.
- the switch 160 when the switch 160 is rotated to clockwise direction, the plurality of the movable bars 120 is rotated to a clockwise direction to electrically disconnect the plurality of the fixable bars 110 and the plurality of the movable bars 120.
- an arc may be generated but the plurality of the arc chambers 130 may extinguish an arc.
- the switch 160 when the switch 160 is rotated to counterclockwise direction, the plurality of the movable bars 120 is rotated. Rotations of the plurality of the movable bars 120 are rotated at the rotation axis 121 to cause a movable axis 122 to lower the plurality of the movable bars 120.
- the switch 160 when the switch 160 is rotated to counterclockwise direction, the plurality of the movable bars 120 is rotated to counterclockwise direction to electrically connect the plurality of the fixable bars 110 and the plurality of the movable bars 120.
- an arc may be generated but the plurality of the arc chambers 130 may extinguish an arc.
- FIG. 5 is an expanded diagram illustrating a plurality of movable bars in FIG. 1 .
- the plurality of the movable bars 120 may be rotated through the switch 160 to be connected or disconnected with the plurality of the fixable bars 110 and may form movable contacts opposing the fixable contacts.
- the plurality of the movable bars 120 may be linked with the rotation axis 121 providing a rotation center and the movable axis 122 being connected with the switch 160 and may move the movable axis 122 through the switch 160 to rotate the plurality of the movable bars 120 at the rotation axis 121.
- the plurality of the arc chambers 130 covers contact parts of the plurality of the fixable bars 110 and the plurality of the movable bars 120 to extinguish an arc being generated on the contact parts.
- the plurality of the arc chambers 130 may have a structure layered with a lattice shaped plate to cover upper sides of the fixable contacts in the plurality of the fixable bars 110.
- FIG. 6 is a an expanded diagram illustrating a bottom base in FIG 1 .
- the bottom base 140 may separately accommodate the plurality of the fixable bars 110 and the plurality of the movable bars 120 to be integrally molded.
- the bottom base 140 may include the fixing unit 141 of the fixable bar and a holding unit 142 of a movable bar and may be integrally molded by a curable resin to have a hard strength.
- the top base 150 may form a pair with the bottom base 140 and may separately seal the plurality of the fixable bars 110, the plurality of the movable bars 120 and the plurality of the arc chambers 130 to be integrally molded.
- the top base 150 may be divided into a section for separately sealing the plurality of the fixable bars 110, the plurality of the movable bars 120 and the plurality of the arc chambers 130 and may be integrally molded by the curable resin to have a hard strength.
- the bottom base 140 and the top base 150 may be divided into a section to separately accommodate the plurality of the fixable bars 110, the plurality of the movable bars 120 and the plurality of the arc chambers 130 and may be vertically linked to separately seal components, each associated with a phase.
- a structure for separately sealing the components, each associated with a phase though the vertical link may shorten the arc extinguishing time according to an internal pressure increase thereby the structure may easily ensure short circuit performance when a short circuit fault occurs and may increase assembly productivity due to simplicity.
- the switch 160 includes a movable axis connecting unit 161 linked with the movable axis 122.
- the switch 160 may move the movable axis 122 through the movable axis connecting unit 161 to rotate the plurality of the movable bars 120 at the rotation axis 121.
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- Breakers (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Description
- This application relates to a circuit breaker and more particularly to a circuit breaker that adopts a vertical coupling structure to seal each of components therein, each associated with a phase and prevents a molten material inflow thereinto to prevent an insulation performance decrease, the circuit breaker being adopted in an apparatus which may connect or disconnect a current path by a manual operation and may automatically disconnect a current in an abnormal status such as overload and short current fault.
- This application relates to a circuit breaker which particularly in an internal vertical coupling structure, may fix a plurality of fixable bars to a bottom base to form fixable contacts, arrange a plurality of movable bars thereon to form movable contacts and arrange arc chambers enclosing the fixable contacts and the movable contacts between the fixable contacts and movable contacts thereby the circuit breaker individually seals a plurality of fixable bars, a plurality of movable bars and a plurality of arc chambers
- Korean Patent Publication No.
10-2004-0079825 - Such disclosed technology includes a switch opening or closing a circuit and a crossbar actuating the switch at a trip position. In a circuit breaker being installed at an external base, the circuit breaker includes a pressure trip unit configured to move toward for pressing the crossbar to rotate a crossbar or for releasing to press the crossbar in order to actuate the switch to the trip position, a supporting member configured to be fixed at a bottom of the circuit breaker, a first lever configured to be rotatably supported by the supporting member and to provide an actuating force through one direction rotation when the circuit breaker is installed on an external base and another direction rotation when the circuit breaker is uninstalled on the external base, a spring configured to provide elastic force to rotate the first lever toward the another direction, a safety tool assembly wherein one terminal thereof is connected to the first lever and another terminal thereof being installed to press the pressure trip unit and wherein the safety tool assembly includes a second lever releasing the crossbar to release to press the pressure trip unit when the first lever rotates toward one direction and pressing the pressure trip unit to rotatably press the crossbar to the trip position when the first lever rotates toward another direction and a projection unit being projected toward a horizontal direction from the pressure trip unit to receive a pressure from the second lever. The circuit breaker always maintains a trip state when the circuit breaker is uninstalled on an external base to protect a user from a risk of an electric shock in a live wire state.
- And Korean Utility Model Patent Application No.
20-2004-0035030 - The circuit breaker includes a fixable contact, a movable contact, a shaft rotatably supporting the movable contact, an insulation case rotatably supporting the shaft and a plurality of single-pole breaking units. In the circuit breaker, the shaft corresponds to a cylindrical member and the shaft includes an edge unit projecting from circumstances to an axis and a rotation axis unit projecting from a center to the axis. The insulation case includes a circular raised unit and a bearing groove unit in order to prevent a gas leakage and rotatably support the shaft. The circular raised unit has a diameter being larger than that of the shaft and is raised toward the axis direction. The bearing groove unit has a predetermined height from the center of the circular raised unit to the axis direction to rotatably seal a rotation axis of the shaft.
- And Korean Patent Publication No.
10-2004-0079825 - Such circuit breaker includes a fixable unit, a movable unit, a case and an exhaust pipe. The fixable unit has a fixed contact. The movable unit has a movable contact being connected with or disconnected from the fixed contact in one terminal thereof and a rotatable movable unit having a rotation center in another terminal thereof. The case forms a pressure accumulation space at one side of the arc generating position, the pressure accumulation space temporarily accumulating a pressurized gas pressurized by an arc and the arc being generated between the fixed contact and the movable contact when a current cuts off. The exhaust pipe is installed at another side of the arc generation position in the case so that the pressurized gas retained in the pressure accumulation space upon current cut-off is passed through between the fixed contact and the movable contact.
- As described above, the circuit breaker may connect or disconnect an electrical path by manual operation or electric operation and may automatically block a current when an abnormal state such as overload current and short current occurs. A molten material may flow in the circuit breaker in the abnormal state thereby an insulation performance may be decreased.
- And the conventional circuit breaker assembles the movable contacts at a side to be sealed and insulated thereby the conventional circuit breaker requires separate modules for sealing each of components and assembly productivity thereof may be decreased.
- This application proposes to provide a circuit breaker preventing a molten material inflow thereinto through a seal and insulation of components, each associated with a phase when a short circuit failure occurs and preventing an insulating performance decrease through the molten material inflow.
- This application proposes to provide a circuit breaker shortening an arc extinguishing time through sealing components, each associated with a phase to increase internal pressure when a short circuit failure occurs thereby the circuit breaker increases short circuit performance.
- This application proposes to provide a circuit breaker implementing a sealing structure of components, each associated with a phase through a vertical integration of a bottom base and a top base thereby the circuit breaker has a simple structure and increases assembly productivity.
- In some embodiments, a circuit breaker includes a plurality of fixable bars configured to form fixable contacts, a plurality of movable bars configured to be rotated through a switch to be connected to or disconnected with the plurality of the fixable bars and configured to form movable contacts opposing the fixable contacts, a plurality of arc chambers configured to cover contact parts of the plurality of the fixable bars and the plurality of the movable bars to remove an arc being generated on the contact parts, a bottom base configured to separately accommodate the plurality of the movable bars, the plurality of the fixable bars and the plurality of the arc chambers, each being in a rotation direction and configured to be integrally molded and a top base configured to form a pair with the bottom base to separately seal the plurality of the movable bars, the plurality of the fixable bars and the plurality of the arc chambers and to be integrally molded.
- In one embodiment, the plurality of the fixable bars may be separately fixed to the bottom base.
- In one embodiment, the plurality of the fixable bars may further include members bending the fixable contacts into U-shape.
- In one embodiment, the plurality of the movable bars may be connected with a rotation axis providing a rotation center and a movable axis being connected with the switch thereby the plurality of the movable bars may move the movable axis through the switch to rotate the plurality of the movable bars through the rotation axis.
- In one embodiment, the plurality of the arc chambers may have a structure layered with a lattice shaped plate to cover upper sides of the fixable contacts in the plurality of the fixable bars.
- In one embodiment, the bottom base may include a fixing unit of the plurality of the fixable bars and a holding unit of the plurality of the movable bars and the bottom base may be molded by a curable resin.
- In one embodiment, the top base may may be divided into a section for separately sealing the plurality of the fixable bars, the plurality of the movable bars and the plurality of the arc chambers and the top base may be molded by the curable resin.
- In one embodiment, the bottom base and the top base may be vertically linked.
- In one embodiment, the switch may be installed on an upper side of the top base and rotate the plurality of the movable bars through the movable axis.
- The circuit breaker and related technologies may prevent molten material inflow in a circuit breaker through a separate seal and insulation of components, each associated with a phase when a short circuit failure occurs and prevent insulating performance decrease through the molten material inflow.
- The circuit breaker and related technologies may shorten an arc extinguishing time by an internal pressure increase through separately sealing components, each associated with a phase when a short circuit failure occurs thereby the circuit breaker may easily ensure short circuit performance.
- The circuit breaker and related technologies may implement a separate sealing structure of components, each associated with a phase through a vertical integration of a bottom base and a top base thereby the circuit breaker may have a simple structure and may increase assembly productivity.
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FIG. 1 is a perspective diagram illustrating a circuit breaker according to an example embodiment of the described technology. -
FIG. 2 is an exploded diagram illustrating an internal structure of a circuit breaker inFIG. 1 . -
FIG. 3 is a perspective diagram illustrating an assembled form of an internal structure of a circuit breaker inFIG. 2 . -
FIG. 4 is an exploded diagram illustrating an actuation method of an internal structure in a circuit breaker inFIG. 3 . -
FIG. 5 is an expanded diagram illustrating a plurality of movable bars inFIG. 1 . -
FIG. 6 is an expanded diagram illustrating a bottom base inFIG 1. 1 . - The embodiments and the configurations depicted in the drawings are illustrative purposes only and do not represent all technical scopes of the invention, so it should be understood that various equivalents and modifications may exist at the time of filing this application. Although a preferred embodiment of the disclosure has been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.
- Terms and words used in the specification and the claims shall be interpreted as to be relevant to the technical scope of the invention based on the fact that the inventor may property define the concept of the terms to explain the invention in best ways.
- The terms "first" and "second" can be used to refer to various components, but the components may not be limited to the above terms. The terms will be used to discriminate one component from the other component. For instance, the first component may be referred to the second component and vice versa without departing from the right of the disclosure.
- When a component is referred to as being "connected to" or "linked to" another component, the component may be directly connected to or linked to another component or an intervening component may be present therebetween. In contrast, if a component is referred to as being "directly connected to" or "directly linked to" another component, an intervening component may not be present therebetween.
- The terms used in the specification are for the purpose of explaining specific embodiments and have no intention to limit the disclosure. Unless the context indicates otherwise, the singular expression may include the plural expression. In the following description, the term "include" or "has" will be used to refer to the feature, the number, the step, the operation, the component, the part or the combination thereof without excluding the presence or addition of one or more features, the numbers, the steps, the operations, the components, the parts or the combinations thereof.
- Unless defined otherwise, the terms including technical and scientific terms used in this specification may have the meaning that can be commonly apprehended by those skilled in the art. The terms, such as the terms defined in the commonly-used dictionary, must be interpreted based on the context of the related technology and must not be interpreted ideally or excessively.
-
FIG. 1 is a perspective diagram illustrating a circuit breaker according to an example embodiment of the described technology andFIG. 2 is an exploded diagram illustrating an internal structure of a circuit breaker inFIG. 1 . - Referring to
FIG. 1 andFIG. 2 , acircuit breaker 100 includes a plurality offixable bars 110, a plurality ofmovable bars 120, a plurality ofarc chambers 130, abottom base 140, atop base 150 and aswitch 160. In one embodiment, thecircuit breaker 100 may actuate the plurality of themovable bars 120 by a movement of theswitch 160 to connect or disconnect electrical path. - The plurality of the
fixable bars 110 forms fixable contacts. In one embodiment, the plurality of thefixable bars 110 may be separately fixed into a fixingunit 141 of thebottom base 140. Also, the plurality of thefixable bars 110 may further include members bending the fixable contacts into U-shape. - The U-shape may wind current flow direction of the plurality of the
fixable bars 110 and the plurality of themovable bars 120 to increase electric repulsion between the plurality of thefixable bars 110 and the plurality of themovable bars 120 in abnormal state. -
FIG. 3 is a perspective diagram illustrating an assembled form of an internal structure of a circuit breaker inFIG. 2 andFIG. 4 is an exploded diagram illustrating an actuation method of an internal structure in a circuit breaker inFIG. 3 . - In
FIG. 3 andFIG. 4 , an internal structure of thecircuit breaker 100 includes the plurality of thefixable bars 110, the plurality of themovable bars 120, the plurality of thearc chambers 130, thebottom base 140, thetop base 150 and theswitch 160. - The plurality of the
fixable bars 110 is projected between thebottom base 140 and thetop base 150. In one embodiment, the plurality of thefixable bars 110 is projected through a groove formed by thebottom base 140. Projected parts of the plurality of thefixable bars 110 may be connected with external electrical path. - When the
switch 160 is rotated to clockwise direction, the plurality of themovable bars 120 is rotated. Rotations of the plurality of themovable bars 120 are rotated at arotation axis 121 to cause amovable axis 122 to lift the plurality of themovable bars 120. - As a result, when the
switch 160 is rotated to clockwise direction, the plurality of themovable bars 120 is rotated to a clockwise direction to electrically disconnect the plurality of thefixable bars 110 and the plurality of themovable bars 120. In this case, an arc may be generated but the plurality of thearc chambers 130 may extinguish an arc. - On the other hand, when the
switch 160 is rotated to counterclockwise direction, the plurality of themovable bars 120 is rotated. Rotations of the plurality of themovable bars 120 are rotated at therotation axis 121 to cause amovable axis 122 to lower the plurality of themovable bars 120. - Therefore, when the
switch 160 is rotated to counterclockwise direction, the plurality of themovable bars 120 is rotated to counterclockwise direction to electrically connect the plurality of thefixable bars 110 and the plurality of themovable bars 120. In this case, an arc may be generated but the plurality of thearc chambers 130 may extinguish an arc. -
FIG. 5 is an expanded diagram illustrating a plurality of movable bars inFIG. 1 . InFIG. 1 ,FIG.2 andFIG. 5 , the plurality of themovable bars 120 may be rotated through theswitch 160 to be connected or disconnected with the plurality of thefixable bars 110 and may form movable contacts opposing the fixable contacts. - In one embodiment, the plurality of the
movable bars 120 may be linked with therotation axis 121 providing a rotation center and themovable axis 122 being connected with theswitch 160 and may move themovable axis 122 through theswitch 160 to rotate the plurality of themovable bars 120 at therotation axis 121. - The plurality of the
arc chambers 130 covers contact parts of the plurality of thefixable bars 110 and the plurality of themovable bars 120 to extinguish an arc being generated on the contact parts. In one embodiment, the plurality of thearc chambers 130 may have a structure layered with a lattice shaped plate to cover upper sides of the fixable contacts in the plurality of the fixable bars 110. -
FIG. 6 is a an expanded diagram illustrating a bottom base inFIG 1 . InFIG. 1 ,FIG.2 andFIG. 6 , thebottom base 140 may separately accommodate the plurality of thefixable bars 110 and the plurality of themovable bars 120 to be integrally molded. In one embodiment, thebottom base 140 may include the fixingunit 141 of the fixable bar and a holdingunit 142 of a movable bar and may be integrally molded by a curable resin to have a hard strength. - The
top base 150 may form a pair with thebottom base 140 and may separately seal the plurality of thefixable bars 110, the plurality of themovable bars 120 and the plurality of thearc chambers 130 to be integrally molded. In one embodiment, thetop base 150 may be divided into a section for separately sealing the plurality of thefixable bars 110, the plurality of themovable bars 120 and the plurality of thearc chambers 130 and may be integrally molded by the curable resin to have a hard strength. - In one embodiment, the
bottom base 140 and thetop base 150 may be divided into a section to separately accommodate the plurality of thefixable bars 110, the plurality of themovable bars 120 and the plurality of thearc chambers 130 and may be vertically linked to separately seal components, each associated with a phase. - A structure for separately sealing the components, each associated with a phase though the vertical link may shorten the arc extinguishing time according to an internal pressure increase thereby the structure may easily ensure short circuit performance when a short circuit fault occurs and may increase assembly productivity due to simplicity.
- The
switch 160 includes a movableaxis connecting unit 161 linked with themovable axis 122. In one embodiment, theswitch 160 may move themovable axis 122 through the movableaxis connecting unit 161 to rotate the plurality of themovable bars 120 at therotation axis 121. - Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure.
Claims (9)
- A circuit breaker comprising:a plurality of fixable bars configured to form fixable contacts;a plurality of movable bars configured to be rotated through a switch to be connected to or disconnected with the plurality of the fixable bars and configured to form movable contacts opposing the fixable contacts;a plurality of arc chambers configured to cover contact parts of the plurality of the fixable bars and the plurality of the movable bars to remove an arc being generated on the contact parts;a bottom base configured to separately accommodate the plurality of the movable bars, the plurality of the fixable bars and the plurality of the arc chambers, each being in a rotation direction and configured to be integrally molded; anda top base configured to form a pair with the bottom base to separately seal the plurality of the movable bars, the plurality of the fixable bars and the plurality of the arc chambers and to be integrally molded.
- The circuit breaker of claim 1, wherein the plurality of the fixable bars is separately fixed to the bottom base.
- The circuit breaker of claim 2, wherein the plurality of the fixable bars further includes members bending the fixable contacts into U-shape.
- The circuit breaker of claim 1, wherein the plurality of the movable bars is connected with a rotation axis providing a rotation center and a movable axis being connected with the switch whereby the plurality of the movable bars moves the movable axis through the switch to rotate the plurality of the movable bars through the rotation axis.
- The circuit breaker of claim 1, wherein the plurality of the arc chambers has a structure layered with a lattice shaped plate to cover upper sides of the fixable contacts in the plurality of the fixable bars.
- The circuit breaker of claim 1, wherein the bottom base includes a fixing unit of the plurality of the fixable bars and a holding unit of the plurality of the movable bars and wherein the bottom base is integrally molded by a curable resin.
- The circuit breaker of claim 1, wherein the top base is divided into a section for separately sealing the plurality of the fixable bars, the plurality of the movable bars and the plurality of the arc chambers and wherein the top base is integrally molded by the curable resin.
- The circuit breaker of claim 6 or 7, wherein the bottom base and the top base are vertically linked.
- The circuit breaker of claim 1, wherein the switch is installed on an upper side of the top base and rotates the plurality of the movable bars through the movable axis.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020120003008A KR101276369B1 (en) | 2012-01-10 | 2012-01-10 | Circuit breaker |
PCT/KR2012/011260 WO2013105745A1 (en) | 2012-01-10 | 2012-12-21 | Molded case circuit breaker |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2804196A1 true EP2804196A1 (en) | 2014-11-19 |
EP2804196A4 EP2804196A4 (en) | 2016-01-06 |
EP2804196B1 EP2804196B1 (en) | 2020-05-13 |
Family
ID=48781657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12864991.0A Active EP2804196B1 (en) | 2012-01-10 | 2012-12-21 | Molded case circuit breaker |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2804196B1 (en) |
KR (1) | KR101276369B1 (en) |
CN (1) | CN104040669B (en) |
WO (1) | WO2013105745A1 (en) |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19912669A1 (en) * | 1999-03-20 | 2000-09-21 | Abb Research Ltd | Microrelay operating parallel to the substrate |
DE10129505C1 (en) * | 2001-06-19 | 2002-10-10 | Moeller Gmbh | Multi-pole low voltage switch with dual housing has common switch chamber housing with drive mechanism on upper part with drive element coupled to at least one connecting element |
KR20040035030A (en) | 2002-10-18 | 2004-04-29 | 라은경 | Oxygen capsul |
US20040176207A1 (en) | 2003-03-07 | 2004-09-09 | Suydam Christopher J. | Differential pinion having a grooved bore |
JP4428076B2 (en) * | 2004-02-16 | 2010-03-10 | 富士電機機器制御株式会社 | Circuit breaker |
JP4522362B2 (en) * | 2005-12-21 | 2010-08-11 | 三菱電機株式会社 | Circuit breaker |
ITBG20060054A1 (en) * | 2006-10-13 | 2008-04-14 | Abb Service Srl | LOW VOLTAGE DEVICE WITH REINFORCED MOBILE CREW |
KR101027780B1 (en) * | 2006-10-17 | 2011-04-07 | 현대중공업 주식회사 | Arc pressure trip device of the circuit breakers |
JP2008270136A (en) | 2007-04-25 | 2008-11-06 | Mitsubishi Electric Corp | Circuit breaker |
KR100919208B1 (en) * | 2007-09-14 | 2009-09-28 | 엘에스산전 주식회사 | Mold cased circuit breaker |
JP2009295293A (en) * | 2008-06-02 | 2009-12-17 | Mitsubishi Electric Corp | Circuit breaker |
CN201725745U (en) * | 2010-05-13 | 2011-01-26 | 上海华联低压电器有限公司 | Anti-falling contact mechanism for low-voltage circuit breaker |
-
2012
- 2012-01-10 KR KR1020120003008A patent/KR101276369B1/en active IP Right Grant
- 2012-12-21 WO PCT/KR2012/011260 patent/WO2013105745A1/en active Application Filing
- 2012-12-21 CN CN201280066561.0A patent/CN104040669B/en active Active
- 2012-12-21 EP EP12864991.0A patent/EP2804196B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP2804196A4 (en) | 2016-01-06 |
KR101276369B1 (en) | 2013-06-18 |
CN104040669A (en) | 2014-09-10 |
WO2013105745A1 (en) | 2013-07-18 |
EP2804196B1 (en) | 2020-05-13 |
CN104040669B (en) | 2016-04-27 |
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