CN101416264A - Circuits breaker having resetting function and breaking function for abnormal current - Google Patents
Circuits breaker having resetting function and breaking function for abnormal current Download PDFInfo
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- CN101416264A CN101416264A CNA2006800540821A CN200680054082A CN101416264A CN 101416264 A CN101416264 A CN 101416264A CN A2006800540821 A CNA2006800540821 A CN A2006800540821A CN 200680054082 A CN200680054082 A CN 200680054082A CN 101416264 A CN101416264 A CN 101416264A
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- switching units
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- detection
- circuit breaker
- reset
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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
- H01H71/10—Operating or release mechanisms
- H01H71/66—Power reset mechanisms
- H01H71/68—Power reset mechanisms actuated by electromagnet
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H81/00—Protective switches in which contacts are normally closed but are repeatedly opened and reclosed as long as a condition causing excess current persists, e.g. for current limiting
- H01H81/04—Protective switches in which contacts are normally closed but are repeatedly opened and reclosed as long as a condition causing excess current persists, e.g. for current limiting electromagnetically operated
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
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Abstract
Provided is a circuit breaker, in which the breaking and resetting operations of a contact point unit can be automatically performed by a detecting/breaking unit and a breaking resetting unit. Therefore, the circuit breaker is easy to use and has the improved space efficiency due to its miniaturization, thereby increasing the competitiveness. The circuit breaker having a resetting function and a breaking function for an abnormal current includes a switching unit (20), a contact point unit (30), a detecting/breaking unit (40), a control unit, and a breaking resetting unit (50).
Description
Technical field
The present invention relates to a kind of circuit breaker that has reset function and break function for abnormal current.In this circuit breaker, when when load-side produces abnormal current, detection/switching units is by threading off the fixed contact end and the contact between the moving contact end of contact point unit and the interruptive current source.Through after the preset time, disconnect reset unit the moving contact end of contact point unit is contacted each other with the fixed contact end.The disconnection of contact point unit and reset operation can and disconnect reset unit by detection/switching units automatically to be carried out.Therefore, this circuit breaker be easy to use and since its miniaturization have the space efficiency of improvement, thereby increased its competitiveness.
Background technology
Circuit breaker provides the switchgear between power supply and load-side, in order to the electric current that flows out to load-side from power supply when interruption when load-side produces abnormal current.Therefore, circuit breaker can prevent because the security incident that abnormal current produces.
Such conventional circuit breaker comprises housing, shift bar, contact point unit, switching units and control unit.Shift bar has knob outstanding outside a side direction of housing, and carries out on/off operation.Contact point unit is located under the shift bar and according to the power supply and the electric current of the on/off operation interrupt load side of shift bar.Switching units is arranged on contact point unit one side and interrupts the electric current of contact point unit forcibly when load-side produces abnormal current.Control unit comprises the circuit of each element of control circuit breaker.
In addition, contact point unit comprises power end, load end, fixed contact end, moving contact end, transverse arm, breech lock and trip bar.Power end and load end are arranged between the both sides of housing.Fixed contact end and moving contact end are arranged between power end and the load end with being connected to each other or disconnecting and forming or turn-off current by them.Transverse arm is arranged on the current collector arm, and breech lock is arranged on the transverse arm.Trip bar is arranged on breech lock one side to lock described breech lock.
Switching units is arranged on a side of the trip bar of contact point unit, and cable is connected to described load-side.Zero phase current transformer ZCT (zero phase current transformer) is configured in a side of cable.Therefore, when when load-side produces abnormal current, trip bar is promoted by abnormal current.
In addition, switching units is the switching units that is widely used in typical circuit breaker.Switching units can be divided into mechanical switching units and magnetic switching units according to the method that disconnects.The machinery switching units uses bimetallic material, and the magnetic switching units uses for example solenoidal magnetic cell.Under the situation of mechanical switching units, crooked and promote trip bar to direction when bimetallic is heated by abnormal current.Under the situation of magnetic switching units, solenoid is magnetized by abnormal current, and plunger moves backward owing to magnetize the magnetic field that produces.Therefore, bar is rotated to promote trip bar.
The operation of conventional circuit breaker will be described below.
When the knob of the shift bar outstanding at shell one side place when open position changes to on-position, shift bar is rotated with decline and is located at breech lock below the shift bar.In addition, because the decline of breech lock, transverse arm and moving contact end descend together, and moving contact end and the fixed contact end in contact that is located under the moving contact end.Therefore, power supply and load-side are electrically connected to each other.
In this, transverse arm is arranged on the top of a side of moving contact end, and the other end of moving contact end is fixed.Because the decline of transverse arm, the moving contact end has the elastic repulsion power facing to pressure.In addition, when breech lock was in the decline state, a side of breech lock was risen discontinuously by trip bar.Therefore, even applied the elastic repulsion power of movable contact, transverse arm and breech lock keep the decline state.
Simultaneously, during using circuit breaker, when owing to be electrically connected when load-side produces abnormal current, breaking units is with machinery or magnetism method operation and promote to be arranged on the trip bar of one side.
In addition, because the promotion of trip bar, the breech lock of locking trip bar is released.Because the elastic repulsion power of moving contact end, the trip bar of release rises with transverse arm.In addition, the rising of moving contact end causes that the contact of fixed contact end is released, thereby moving contact end and fixed contact end electricity disconnect.
In addition, the breech lock of rising turns to open position with shift bar from the on-position relevant with shift bar forcibly.
Therefore, when when load-side produces abnormal current, switching units disconnects contact point unit, thus the security incident of preventing.After getting rid of the abnormal current factor, the user turns to on-position with shift bar from open position.
Yet, use the mechanical chopper of bimetallic material to have with respect to condition of instant error electric current reaction time slowly, the overcurrent that for example thunderbolt of described abnormal current, surge and short circuit cause.Therefore, mechanical chopper is carried out opening operation unsatisfactorily.In some cases, because circuit breaker can not be reused, it must integrally be replaced, and has caused the increase of maintenance cost.
In addition, owing to the conventional circuit breaker that has fast-response time for the abnormal current that is produced by overcurrent is widely used.Yet described circuital current responds frequently and is higher than the rated current operation a little.Therefore, having to manually, the reset switch handle is inconvenient for the user.This has increased power consumption, has increased user's burden.
Simultaneously, the circuit breaker that uses reset unit to realize has been proposed recently.This reset unit comprises the additional reset unit such as connecting rod, and it is set at one of Shell of circuit breaker side-prominent shift bar.When the switching units turn-off current of circuit breaker, reset unit is carried out reset operation to open shift bar by force after the scheduled time in the past.Therefore, the fixed contact end and the moving contact end of contact point unit are connected to each other, thereby have eliminated user's trouble.
When abnormal current took place the overcurrent owing to for example short circuit, circuit breaker should keep off-state.Yet, in this case, because the heat of the power line that the lasting reset operation of reset unit causes can cause fire.Therefore, can produce more serious accident.
In addition, the increase of reset unit has strengthened volume, causes reducing of installing space service efficiency.Especially, increase number of components and operation amount, reduced the competitiveness of product because improve price.
Summary of the invention
The purpose of this invention is to provide a kind of circuit breaker that has reset function and break function for abnormal current, wherein, disconnecting reset unit is arranged to according to abnormal current factor reset contact unit optionally, and therefore optionally carry out disconnection and reset operation, thereby the ease of use and the efficient of maximization circuit breaker according to the abnormal current factor.
Another object of the present invention provides the circuit breaker that abnormal current is had reset function and break function, wherein detection/switching units and disconnection reset unit are embedded in the circuit breaker, and therefore make the circuit breaker miniaturization, thereby increased space efficiency and product competition.
According to an aspect of the present invention, provide the circuit breaker that abnormal current is had reset function and break function, circuit breaker comprises: switch element; According to the ON/OFF position disconnection of switch element or the contact point unit of energized side and load-side; Detection/switching units when break contact unit when load-side detects abnormal current; Control unit with control circuit; And the disconnection reset unit, its side that is arranged on detection/switching units is to restart switch element and contact point unit in response to the reseting controling signal of exporting from control unit.Detection/switching units comprises: detection of electrical leakage/switching units, be used to detect the abnormal current that occurs in load-side and whether come from external factor, external factor comprises thunderbolt and surge, and when abnormal current be break contact unit when coming from external factor; And short-circuit detecting/switching units, described short-circuit detecting/switching units is used to detect the abnormal current that occurs in load-side and whether comes from internal factor, internal factor comprises short circuit, and when abnormal current be when coming from internal factor, the break contact unit.
Detection of electrical leakage/the switching units of detection/switching units and each of short-circuit detecting/switching units can comprise: have the coil part of the cylinder in hole, and this coil is around cylinder; Have the axle that is inserted into the end in the coil part hole, and its other end is outwards outstanding, thereby this axle slides in the hole when coil component is magnetized; And have the bottom that is connected to the described axle other end, be connected to the middle part of hinge, and the pivot that when axle slides, centers on the top of hinge rotation, thereby make pivotable member pass through the contact of revolving force break contact unit.
Detection/switching units may further include bimetal leaf, and it is configured to be higher than the big current flow heats of rated current and towards a direction bending, thus the contact of break contact unit.
Have only when contact point unit is interrupted by the opening operation of detection of electrical leakage/switching units owing to the external factor that comprises thunderbolt and surge, control unit just transmits reseting controling signal, and described disconnection reset unit reset switch unit and contact point unit.Disconnecting reset unit can comprise: solenoid; Be arranged on the plunger that slides owing to solenoidal magnetization in the solenoid middle part; And have end that is connected to plunger one end and the linkage component with the other end that is connected to switch element, so that this linkage component is by the slip automatic reset switch unit of plunger.
According to a further aspect of the invention, a kind of circuit breaker that has for abnormal current reset function and break function is provided, this circuit breaker comprises: the shell that has opening in a side, be vertically set on the support at middle part, be arranged on the hinge patchhole on the top of support, and the arc guiding hole that is arranged on the support bottom; Switch element with the through hole that is connected to hinge, this hinge is inserted in the support of shell, is formed on the body in the lower link hole, and by the outwards outstanding knob of body upper hole; Be arranged on the contact point unit below the switch element, this contact point unit comprises: the breech lock that rises along the support guide hole; The connecting rod that between breech lock and body tie rod holes, connects; Be located at the transverse arm under the breech lock; Vertically be located at support one side and have the trip bar of the bottom that pivot to connect, this trip bar locks breech lock when breech lock descends; Be located at the moving contact end under the transverse arm, this moving contact end is configured to descend and have elastic repulsion power by pushing transverse arm; Fixed contact end with end of contact moving contact end; And the power supply and the load end that connect outer casing end and fixing and moving contact end simultaneously; Be arranged on the detection/switching units of contact point unit one side, this detection/switching units comprises: have the coil component of hole circle cylinder, and coil twines around cylinder; Has the axle that inserts the end in the coil hole, so that this axle slides in the hole when coil component magnetizes; And have the bottom that is connected on the axle and be connected to the pivotable member at the middle part of hinge, thereby make this pivotable member rotate to provide thrust on a direction, to promote the trip bar of contact point unit around hinge; The disconnection reset unit comprises: the solenoid that is arranged on the contact point unit opposite side; Be located at the plunger that slides owing to solenoidal magnetization in the solenoid middle part; And the linkage component that between plunger and switch element body tie rod holes, connects; And be located at enclosure and have and control the control unit of the circuit of unit separately.
Detection/switching units can be provided with a plurality of and comprise: detect the detection of electrical leakage/switching units from the abnormal current of external factor, described external factor comprises thunderbolt and surge; And detecting short-circuit detecting/switching units from the abnormal current of internal factor, described internal factor comprises short circuit.
Detection/switching units may further include: bimetal leaf, thus it is configured to be higher than the big current flow heats and the contact by evading profile break contact unit towards a direction towards direction bending of rated current.
Only when switching units receives reseting controling signal from control unit, disconnect reset unit and can carry out reset operation.
Short-circuit detecting/switching units can comprise the zero-phase current transformer that is used to detect abnormal current.
Circuit breaker may further include the adjusting parts that are arranged on the trip bar with the distance that is adjusted to bimetal leaf.
As mentioned above, be arranged to according to the factor of abnormal current reset contact unit optionally because disconnect reset unit, this disconnections and reset operation are optionally carried out according to the abnormal current factor, so make the easy-to-use and maximizing efficiency of circuit breaker.
In addition, because detection/switching units and disconnection reset unit are embedded in the circuit breaker, this circuit breaker can minimize, thereby has increased the competitiveness of space efficiency and product.
Various modifications and the distortion that the present invention is carried out is conspicuous to those skilled in the art.Therefore, the present invention's attempt covers modification of the present invention and the distortion in appended claims and the equivalent scope thereof.
Description of drawings
Fig. 1 is a decomposition diagram of having dismantled the circuit breaker of top shell according to the embodiment of the invention.
Fig. 2 is the cross-sectional view according to the circuit breaker of the embodiment of the invention.
Fig. 3 shows switch element, contact point unit according to the embodiment of the invention and the perspective view that disconnects the reset unit assembling.
Fig. 4 shows the enlarged drawing of the mode of operation of detection/switching units when circuit breaker is positioned at conducting state.
Fig. 5 shows in detection/switching units the enlarged drawing of the mode of operation of electric leakage or short-circuit detecting unit.
Fig. 6 shows the enlarged drawing of the mode of operation of bimetal leaf in detection/switching units.
Fig. 7 shows the enlarged drawing that disconnects the reset unit off-state.
Fig. 8 shows the enlarged drawing that disconnects the reset unit reset mode.
The Reference numeral of accompanying drawing major part is described
10: shell 14: support
16: hinge 18: guide hole
20: switch element 22: knob
24: body 27: tie rod holes
30: contact point unit
34a, 34b: fixing and moving contact end
35: transverse arm 36: breech lock
37: connecting rod 38: trip bar
40: detection/switching units
42: detection of electrical leakage/switching units
44: short-circuit detecting/switching units
46: bimetal leaf 410: coil component
412: hole 414: cylinder
416: coil 420: axle
430: pivotable member 50: disconnect reset unit
52: solenoid 54: plunger
56: linkage component
Embodiment
Embodiments of the invention will be described with reference to the accompanying drawings below.
Fig. 1 is a decomposition diagram of pulling down the circuit breaker behind the shell of top, and Fig. 2 is the cross-sectional view of circuit breaker, and Fig. 3 is the perspective view that switch element, contact point unit and the assembling of disconnection reset unit are shown.
Referring to figs. 1 to 3, circuit breaker comprises shell 10, switch element 20, contact point unit 30, detection/switching units 40, disconnects reset unit 50 and control unit.Switch element 20 comprises the knob 22 that protrudes in shell 10.Contact point unit 30 is arranged under the switch element 20, thereby according to the direction of rotation of switch element 20 fixed contact end 34a is contacted from moving contact end 34b release or with moving contact end 34b.Detection/switching units 40 is located at the inboard of shell 10, thereby when when abnormal current appears in load-side, the contact of contact point unit 30 being disconnected.Disconnect the opposite side that reset unit 50 is located at detections/switching units 40, thus in response to the reseting controling signal of exporting from control unit reset contact unit 30.Control unit is located at the inside of shell 10, and comprises the circuit that is used to control each element of circuit breaker and reseting controling signal is sent to disconnection reset unit 50.
Shell 10 comprises top shell 10a and drain pan 10b.Opening 12 is formed on the shell 10a of top.The knob 22 of switch element 20 is outwards outstanding by opening 12.Switch element 20, contact point unit 30, detection/switching units 40, disconnection reset unit 50 and control unit are arranged among the drain pan 10b.
In addition, support 14 vertically is arranged on the either side of drain pan 10b core, and the each interval preset distance.One side of each support 14 is fixed on the drain pan 10b.
Further, hinge 16 and hinge patchhole 16a are arranged on the top of support 14, to such an extent as to the body 24 of switch element 20 is pivotally installed, and arc guide hole 18 is limited at the bottom of support 14, with the transverse arm of guiding contact point unit 30.
In addition, insert the side that space 28 is limited to body 24, be inserted into insertion space 28 so that disconnect an end of the linkage component of reset unit 50.The linkage component that disconnects reset unit 50 is connected by the member that is inserted in the tie rod holes 27.
Preferably, the other end hinge joint of moving contact end 34b is so that have elastic repulsion power by an end of pushing 35 moving contact ends of transverse arm 34b.
In addition, contact point unit 30 is not limited to said structure.Contact point unit 30 can have any structure, as long as operate according to the on/off of switch element 20, by contacting or release of fixed contact end 34a and moving contact end 34b, contact point unit 30 can connection or deenergization and load-side.
In addition, provide the elastomeric element of elastic force to be included in breech lock 36 or the switch element 20.Since elastomeric element, when abnormal current occurring, the breech lock fast rise, thus moving contact end 34b separates fast with fixed contact end 34a.
Term " disconnection " meaning is that moving contact end 34b discharges or separation from fixed contact end 34a, and in other words, thereby moving contact end 34b separates the electric current supply of cutting off from the power supply to the load from fixed contact arm 34a.Mean that fixed contact end 34a and moving contact end 34b contact electric current each other again and be fed to load-side from power supply thereby reset.
When detecting the abnormal current that produces in load, detections/switching units 40 cuts off electric current from the power supply to the load by the fixed contact end 34a release moving contact end 34b from contact point unit 30.
Detection/switching units 40 comprises coil component 410, axle 420 and pivotable member 430.Coil component 410 comprises cylinder 414 with hole 412 and the coil 416 that twines around cylinder 414.Axle 420 has end and the outwards outstanding the other end in the hole 412 of the cylinder 414 that inserts coil component 410, thereby this 420 moves backward by the magnetic force that produces from coil 416.The middle part that pivotable member 430 is fixed with having end being connected to axle described the other end of 420 and hinge.Therefore, by moving backward of axle 420, pivotable member 430 pivots around hinge 440, and the other end of pivotable member 430 promotes the trip bar 38 of contact point unit 30.Therefore, the breech lock 36 that locks onto trip bar 38 is released, and the electrical connection of contact point unit 30 is disconnected.
Further, on axle 420 elastomeric element is set, this end of 420 is inserted in the hole 412 of cylinder 414.Elastomeric element has compression stress and impeller-hub 420 is produced by the magnetization of coil component 410 elastic repulsion power simultaneously.When the magnetization of coil component 410 disappeared, the elastic repulsion power of elastomeric element made axle 420 move on to the home position.
In addition, detection/switching units 40 uses and passes through the magnetic field solenoidal principle of mobile plunger forward or backward.In some cases, any unit can use, as long as it has with the solenoid similar operation and concerns.
Simultaneously, preferably provide a plurality of detection/switching units 40.Therefore, a detection/switching units 40 can be used as detection of electrical leakage/switching units 42, it is because for example abnormal current that causes of thunderbolt and the external factor of surge and break contact unit 30, and another can be used as short-circuit detecting/switching units 44, and it is because for example abnormal current that causes of the internal factor of short circuit and break contact unit 30.
In addition, detection of electrical leakage/switching units 42 is connected in series between power supply and load, and determines whether to take place for example to be struck by lightning or the abnormal current of surge.
Further, short-circuit detecting/switching units 44 comprises determining unit, and it determines that whether the signal that obtains by zero phase current sensor (ZCT) is the abnormal current such as short circuit.Described determining unit determines that with abnormal current signal is exported to SCR and operation is connected in series to the trip coil of SCR.
And detection/switching units 40 further comprises the bimetal leaf 46 that is made of the sheet metal with different heat expansion coefficient.
In addition, between bimetal leaf 46 and trip bar 38, provide adjusting parts 39.This is regulated parts 39 and regulates a distance, by the bending of bimetal leaf thrust is imposed on trip bar 38 in this distance.
In other words, detection/switching units 40 detects the factor of the abnormal current of present load-side, for example electric leakage, short circuit and greater than the high electric current of rated current, and operation detection of electrical leakage/switching units, short-circuit detecting/switching units and bimetal leaf.
Preferably, disconnect the opposite side that reset unit 50 is arranged on detection/switching units 40.Disconnect reset unit 50 and comprise solenoid 52, plunger 54 and linkage component 56.Plunger 54 has an end and the outwards outstanding other end that is inserted into solenoid 52.Plunger 54 moves backward by the magnetization of solenoid 52.Link rod part 56 has an end that is fixed to plunger 54 other ends and the other end that is affixed to connecting rod 37, and described connecting rod 37 is inserted in the tie rod holes 27 that is formed on switch element 20 bodies 24.
Especially, only when the circuit breaker that automatically resets was opened by the opening operation of detection of electrical leakage/switching units 42, described disconnection reset unit 50 was just carried out reset operation.
The reason here is as follows: under the situation of short circuit or high electric current, when when abnormal current appears in electronic equipment or load-side, if described disconnection reset unit is carried out reset operation constantly after unlatching, so, from the electric current of power supply constantly to the load-side supply; Therefore, electric current exceedingly flows into electronic equipment or cable, and is useless thereby circuit breaker becomes.
Control unit is arranged on the inside of shell 10, and each element of control circuit breaker.Particularly, when detection of electrical leakage/switching units 42 when for example the thunderbolt or the abnormal current of surge move, behind the preset time, control unit is sent to reseting controling signal and disconnects reset unit 50, and disconnects reset unit 50 reset contact unit 30.Because this is well known to a person skilled in the art, has omitted its detailed description, and do not shown in the accompanying drawings.
Though do not illustrate, circuit breaker can comprise that test cell also is conspicuous, and whether its circuit breaker 1 of can determining to automatically reset is installed and good operation.
Breaker operator will be described below.
In this case, when when abnormal current appears in load-side, therefore 40 operations of detection/switching units, cut off the electric current that flows to load-side from power supply with break contact unit 30.
Fig. 4 to 6 is the enlarged drawings that illustrate according to the detection/switching units of the embodiment of the invention.More precisely, Fig. 4 shows the opening of the circuit breaker that automatically resets, and Fig. 5 shows the running status of electric leakage or short-circuit detecting unit, and Fig. 6 shows the running status of bimetal leaf.
With reference to figure 4 to 6, if abnormal current is for example to be struck by lightning or overcurrent that the external factor of surge causes, when the detection electric current that is caused by abnormal current is input to the detection of electrical leakage of detection/switching units 40/switching units 42, this detection electric current flow in the coil 416 of coil component 410, thereby coil 416 is magnetized.
In addition, because the magnetization of coil 416, the cylinder 414 that coil 416 is centered on is magnetized.Because the magnetization of cylinder 414, the axle 420 with the end in the hole 412 that is inserted into cylinder 414 moves backward.
And then because axle 420 moves backward, the lower end of pivotable member 430 is connected to an end of axle 420.Move backward around hinge 440 bottom of pivotable member 430, and the top of pivotable member 430 has revolving force forward and promotes to be arranged on the trip bar 38 of pivotable member 430 1 sides.
And, receive the locking of trip bar 38 latch 36 of motive force, because promote the revolving force of top around pivotally fixing bottom, the one side lock is to trip bar 38.
Simultaneously, because the elastic repulsion power of moving contact end 34b, moving contact end 34b rising and transverse arm 35 and breech lock 36 rise together.
Therefore, because the rising of fixed contact end 34b, release has the contact of fixed contact end 34a to cut off the electric current from the power supply to the load.
Rising breech lock 36 cooperates the guide hole 18 of support 14 by the downside of connecting rod 37.Therefore, breech lock 37 is along guide hole 18 rising connecting rods 37.
In addition, the top of connecting rod 37 cooperates the tie rod holes 27 of switch element 20 bodies 24, and the link rod part 56 coupler link holes 27 that disconnect reset unit 50.Therefore, because the climbing power of connecting rod 37, the body 24 of switch element 20 is around hinge 16 rotations that are connected to through hole 26.
In addition, switch element 20 is forced to transform to open position from the enable possition, and the link rod part 56 that is connected to switch element 20 bodies 24 moves forward.The plunger 54 that is connected to linkage component 56 opposite sides keeps the state that moves forward.
Detection of electrical leakage/the switching units 42 of detection/switching units 40 discharges contact fixing and moving contact end 34a and 34b.Therefore, the abnormal current that occurs in load-side does not flow to mains side or another load-side.Because switch element 20 is transformed into make position from the enable possition by force, the user can verify the state of the circuit breaker 1 that automatically resets.
Simultaneously, detection of electrical leakage/switching units 42 is by the abnormal current operation of for example thunderbolt or surge, and contact point unit 30 is disconnected.Behind preset time, control unit sends reseting controling signal to and disconnects reset unit 50.
Fig. 7 and 8 is the enlarged drawings that illustrate according to the disconnection reset unit running status of the embodiment of the invention.Especially, Fig. 7 shows the off-state that disconnects reset unit, and Fig. 8 shows the reset mode that disconnects reset unit.
With reference to figure 7 and 8, solenoid 52 is magnetized according to reseting controling signal, and plunger 54 moves backward by magnetized solenoid 52, and the linkage component 56 that is fixed to plunger 54 1 ends moves backward by motive force.
The other end of linkage component 56 is by the body 24 of connecting rod 37 link couplings to switch element 20, and body 24 rotates around hinge 16 by the thrust of linkage component 56.
In other words, the knob 22 of switch element 20 resets to the enable possition from open position.
In addition, an end of the other end of the connecting rod 37 of breech lock 36 and link coupling body 24 and linkage component 56 is connected to support 14 guide holes 18.Because the motive force of linkage component 56, connecting rod 37 is pushed.The other end of connecting rod 37 also descends along guide hole 18 declines and breech lock 36.
Since the decline of breech lock 36, the following moving contact end 34b decline that is configured in the following transverse arm 35 of breech lock 36 and is configured in transverse arm 35.Therefore, the fixed contact end 34a of moving contact end 34b below being configured in moving contact end 34b contacts, thereby power supply and load-side are electrically connected to each other.
One end of decline breech lock 36 locks by trip bar 38, thereby has stoped any rising of breech lock 36.Like this, just finished the reset operation that disconnects reset unit 50.
Simultaneously, when abnormal current be that the internal factor of for example short circuit causes that this abnormal current is by the Zero-phase current sensor of short-circuit detecting/switching units 44.The coil 416 of current detecting electric current inflow line coil component 410 and so magnetizing coil 416.
Because the subsequent operation of short-circuit detecting/switching units 44 is equal to detection of electrical leakage/switching units 42, their detailed description will be omitted.
Simultaneously, when abnormal current is the big electric current of scope from 150% to 300% rated current, the bimetal leaf 46 of this big current flow heats detection/switching units 40 and therefore crooked this bimetal leaf 46.
Crooked bimetal leaf 46 promotes trip bar 38 on a direction.The locking of breech lock 36 is released, wherein the locked trip bar 38 of an end of this breech lock.Therefore, the transverse arm 35 and the moving contact end 34b that are located under the breech lock 36 rise, thereby power supply and load-side are disconnected.
Eliminate when the internal factor of for example short circuit and big electric current, power supply and load-side disconnect by contact point unit 30 in this state, and power supply and load-side can be electrically connected by knob 22 is reset to the enable possition from open position.
In other words, the body 24 that is formed with knob 22 is around hinge 16 rotations, and moves forward by force by revolving force at the linkage component 56 that the tie rod holes 27 of body 24 is coupled to connecting rod 37 1 ends.The plunger 54 that is coupled to linkage component 56 other ends moves forward.
In addition, because the rotation connecting rod 37 of body 24 descends, and the other end of connecting rod 37 descends and the breech lock 36 that is coupled to connecting rod 37 other ends descends along guide hole 18.
In addition, transverse arm of arranging below decline breech lock 36 35 and moving contact end 34b descend, and moving contact end 34b contacts with fixed contact end 34a, thereby power supply and load-side are electrically connected to each other.
Therefore, be cut off by operation detection/switching units according to the abnormal current factor contact point unit that occurs in load-side.In some cases, circuit breaker can automatically reset, and therefore is more convenient for the user.
Claims (11)
1, a kind of circuit breaker that has reset function and break function for abnormal current, it comprises:
Switch element (20);
Contact point unit (30), described contact point unit (30) are used for ON/OFF position according to switch element (20) and disconnect or contact mains side and load-side;
Detection/switching units (40), described detection/switching units (40) are used for disconnecting described contact point unit when when load-side detects abnormal current;
Control unit with control circuit; With
Disconnect reset unit (50), described disconnection reset unit (50) is arranged on a side of detection/switching units (40), with reset switch unit (20) and contact point unit (30) in response to the reseting controling signal of exporting from control unit,
Wherein detection/switching units (40) comprising:
Detection of electrical leakage/switching units (42), described detection of electrical leakage/switching units (42) is used to detect the abnormal current that occurs in load-side and whether comes from the external factor that comprises thunderbolt and surge, and when abnormal current is when coming from external factor, described detection of electrical leakage/switching units (42) break contact unit (30); With
Short-circuit detecting/switching units (44), described short-circuit detecting/switching units (44) is used to detect the abnormal current that occurs in load-side and whether comes from the internal factor that comprises short circuit, and when abnormal current is when coming from internal factor, described short-circuit detecting/switching units (44) break contact unit (30).
2, according to the circuit breaker of claim 1, wherein each of the detection of electrical leakage/switching units (42) of detection/switching units (40) and short-circuit detecting/switching units (44) comprises:
Coil part (410), described coil part (410) have cylinder (414) that has hole (412) and the coil (416) that twines around cylinder (414);
Axle (420), described axle (420) have an end and the outwards outstanding other end in the hole (412) that is inserted into coil part (410), thereby when coil component (410) when being magnetized, described axle (420) slides in the hole (412); With
Pivotable member (430), the bottom of described pivotable member (430) is connected to the described other end of described axle (420), the middle part of described pivotable member (430) is connected to hinge (440), and the top of described pivotable member (430) is around hinge (440) rotation when axle (420) slides, thereby, make pivotable member (430) pass through the contact of revolving force break contact unit (30).
3, according to the circuit breaker of claim 1 or 2, wherein detection/switching units (40) further comprises: bimetal leaf (46), described bimetal leaf (46) is set to be higher than the big current flow heats of rated current, and towards a direction bending, with the contact of break contact unit (30).
4, according to the circuit breaker of claim 1, wherein, have only when contact point unit (30) is interrupted by the opening operation of detection of electrical leakage/switching units (42) owing to the external factor that comprises thunderbolt and surge, control unit just transmits reseting controling signal, and described disconnection reset unit (50) reset switch unit (20) and contact point unit (30).
5, according to the circuit breaker of claim 1 or 4, it breaks reset unit (50) and comprising:
Solenoid (52);
Plunger (54), described plunger (54) is arranged on the middle part of solenoid (52), and described plunger (54) is set to owing to the magnetization of solenoid (52) is slided; With
Linkage component (56), described linkage component (56) has the end that is connected to plunger (54) one ends, and have the other end that is connected to switch element (20), thereby, described linkage component (56) by plunger (54) slip and automatically reset switch unit (20).
6, a kind of circuit breaker that has reset function and break function for abnormal current comprises:
Shell (10), described shell (10) has: the opening (12) at a side place, the support (14) in the middle part of vertically being arranged on, hinge patchhole (16a) that limits at the place, top of support (14) and the arc guiding hole (18) that limits at place, support (14) bottom;
Switch element (20), described switch element (20) has through hole (26), described through hole (26) is connected with hinge (16) in the support that is inserted into shell (10) (14), described switch element (20) has body (24), the bottom of described body (24) is formed in the tie rod holes (27), and described switch element (20) has knob (22), and it is outwards outstanding that described knob (22) passes described opening (12) at the place, top of body (24);
Be arranged on the following contact point unit (30) of switch element (20), this contact point unit (30) comprising:
The breech lock (36) that rises along the guide hole (18) of support (14);
Be connected the connecting rod between the tie rod holes (27) of breech lock (36) and body (24);
Be arranged on the transverse arm (35) under the breech lock (36);
Trip bar (38), described trip bar (38) vertically is arranged on a side of support (14), and has the bottom of pivotable connection, when breech lock (36) descends, described trip bar (38) locking breech lock (36);
Moving contact end (34b), described moving contact end (34b) are located under the transverse arm (35), and described moving contact end (34b) is set to descend owing to the pressure of transverse arm (35), and has elastic repulsion power;
Fixed contact end (34a), described fixed contact end (34a) have an end of contact moving contact end (34b); With
Power supply and load end (32a, 32b), described power supply and load end (32a, (34a 34b) connects with fixing and moving contact end 32b) to make shell both ends (10);
Be arranged on the detection/switching units (40) of contact point unit (30) one sides, described detection/switching units (40) comprising:
Coil component (410), described coil component (410) have cylinder (414) that has hole (412) and the coil (416) that twines around cylinder (414);
Axle (420), described axle (420) have the end in the hole (412) of insertion coil component (410), thereby when coil component (410) magnetize, described (420) slided in the hole (412); With
Pivotable member (430), described pivotable member (430) has bottom that is connected to axle (420) and the middle part that is connected to hinge (440), thereby, described pivotable member (430) is rotated so that thrust to be provided, so that push away the trip bar (38) of contact point unit (30) in one direction around hinge (440);
Disconnect reset unit (50), described disconnection reset unit (50) comprising:
Be arranged on the solenoid (52) of contact point unit (30) opposite side;
Plunger (54), described plunger (54) are located at solenoid (52) middle part, and owing to the magnetization of solenoid (52) is slided; With
Linkage component (56), described linkage component (56) are connected between the tie rod holes (27) of body (24) of plunger (54) and switch element (20); With
Control unit, described control unit are arranged on shell (10) inside, and have and be used to control the circuit of unit separately.
7, according to the circuit breaker of claim 6, wherein detection/switching units (40) is provided with a plurality ofly, and comprises:
Detection of electrical leakage/switching units (42), described detection of electrical leakage/switching units (42) are used to detect the abnormal current that comes from the external factor that comprises thunderbolt and surge; With
Short-circuit detecting/switching units (44), described short-circuit detecting/switching units (44) is used to detect the abnormal current that comes from the internal factor that comprises short circuit.
8, according to the circuit breaker of claim 6 or 7, wherein detection/switching units (40) further comprises:
Bimetal leaf (46), described bimetal leaf (46) is set to be higher than the big current flow heats of rated current and crooked in one direction, so that come break contact unit (30) by promoting trip bar (38) in one direction owing to the bending of described bimetal leaf.
9, according to the circuit breaker of claim 6, wherein: have only when disconnecting reset unit (50) and receive reseting controling signal from control unit, described disconnection reset unit (50) is just carried out reset operation.
10, according to any circuit breaker in the claim 1,2 and 7, wherein short-circuit detecting/switching units (44) comprising: the zero phase current transformer that is used to detect abnormal current.
11, according to the circuit breaker of claim 6, wherein circuit breaker further comprises: be arranged on the adjusting parts (39) that trip bar (38) is sentenced the distance that is adjusted to bimetal leaf (46).
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2006-0028512 | 2006-03-29 | ||
| KR1020060028512 | 2006-03-29 | ||
| KR1020060028512A KR100823144B1 (en) | 2006-03-29 | 2006-03-29 | Circuits Breaker having resetting function and breaking function for abnormal current |
| PCT/KR2006/001533 WO2007111395A1 (en) | 2006-03-29 | 2006-04-24 | Circuits breaker having resetting function and breaking function for abnormal current |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101416264A true CN101416264A (en) | 2009-04-22 |
| CN101416264B CN101416264B (en) | 2012-11-07 |
Family
ID=38541306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800540821A Expired - Fee Related CN101416264B (en) | 2006-03-29 | 2006-04-24 | Circuits breaker having resetting function and breaking function for abnormal current |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2009531827A (en) |
| KR (1) | KR100823144B1 (en) |
| CN (1) | CN101416264B (en) |
| WO (1) | WO2007111395A1 (en) |
Cited By (3)
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|---|---|---|---|---|
| CN104993323A (en) * | 2015-07-11 | 2015-10-21 | 曾肖锦 | Electric leakage protection plug and socket protection device |
| WO2016026210A1 (en) * | 2014-08-19 | 2016-02-25 | 厦门大恒科技有限公司 | Parameter miniature circuit breaker for cutting off power current |
| CN116344285A (en) * | 2023-03-06 | 2023-06-27 | 联桥科技有限公司 | Intelligent circuit breaker with load characteristic recognition function |
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| KR101071920B1 (en) | 2010-01-15 | 2011-10-10 | 상도전기통신 주식회사 | Slim Type Overload and Earth Leakage Circuit Breaker |
| DE102010034102B4 (en) * | 2010-08-12 | 2017-04-13 | Siemens Aktiengesellschaft | Electrical installation device with summation current transformer |
| KR101503346B1 (en) * | 2014-09-26 | 2015-03-18 | (주)테크맥스텔레콤 | Digital radio frequency refeater |
| WO2016175606A1 (en) * | 2015-04-30 | 2016-11-03 | 주식회사 엘지화학 | Lithium secondary battery with improved stability using bimetal tab |
| KR101912004B1 (en) | 2015-04-30 | 2018-10-25 | 주식회사 엘지화학 | Lithium secondary battery with improved safety by using bimetal tab |
| CN105513915B (en) * | 2016-02-15 | 2017-09-12 | 佳一电气有限公司 | A kind of intelligent breaker combination unit |
| CN105632846B (en) * | 2016-03-15 | 2017-11-24 | 佳一电气有限公司 | A kind of circuit breaker actuating mechanism |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016026210A1 (en) * | 2014-08-19 | 2016-02-25 | 厦门大恒科技有限公司 | Parameter miniature circuit breaker for cutting off power current |
| CN104993323A (en) * | 2015-07-11 | 2015-10-21 | 曾肖锦 | Electric leakage protection plug and socket protection device |
| CN104993323B (en) * | 2015-07-11 | 2017-07-28 | 曾肖锦 | The protection device of leakage protecting plug socket |
| CN116344285A (en) * | 2023-03-06 | 2023-06-27 | 联桥科技有限公司 | Intelligent circuit breaker with load characteristic recognition function |
| CN116344285B (en) * | 2023-03-06 | 2023-11-03 | 联桥科技有限公司 | Intelligent circuit breaker with load characteristic recognition function |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007111395A1 (en) | 2007-10-04 |
| KR20070097796A (en) | 2007-10-05 |
| KR100823144B1 (en) | 2008-04-21 |
| JP2009531827A (en) | 2009-09-03 |
| CN101416264B (en) | 2012-11-07 |
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