CN113963997B - Circuit breaker capable of automatically selecting overload protection mode - Google Patents
Circuit breaker capable of automatically selecting overload protection mode Download PDFInfo
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- CN113963997B CN113963997B CN202111136662.8A CN202111136662A CN113963997B CN 113963997 B CN113963997 B CN 113963997B CN 202111136662 A CN202111136662 A CN 202111136662A CN 113963997 B CN113963997 B CN 113963997B
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- circuit breaker
- middle cover
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- 238000012544 monitoring process Methods 0.000 claims abstract description 3
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000010079 rubber tapping Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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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
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
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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
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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
- H01H71/04—Means for indicating condition of the switching device
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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
- H01H71/08—Terminals; Connections
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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
- H01H71/1081—Modifications for selective or back-up protection; Correlation between feeder and branch circuit breaker
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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
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
Landscapes
- Breakers (AREA)
Abstract
The invention relates to the technical field of circuit breakers, in particular to a circuit breaker capable of automatically selecting an overload protection mode, which comprises a base, a middle cover, a selection module and a switch piece, wherein a thermal element assembly for monitoring overload of the circuit breaker is arranged in the base; the switch piece is positioned on the outer surface of the middle cover and connected with the selection module for starting the selection module; the thermal element assembly includes an overload trigger; and the middle cover is provided with a switch piece through hole at the corresponding positions of the overload trigger piece and the switch piece, and when the circuit breaker is overloaded, the overload trigger piece passes through the switch piece through hole to touch the switch piece so as to start the switch piece. A circuit breaker is provided with an externally attachable accessory and a selectable overload feedback mode.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a circuit breaker capable of automatically selecting an overload protection mode.
Background
In the using process of the plastic shell type circuit breaker, under the condition of line overload, the circuit breaker can trip by itself to achieve the aim of line disconnection due to the protection effect on the line and the electrical elements; however, in some situations, such as fire protection applications, the function of keeping the circuit breaker on is required even if the circuit breaker is overloaded, so whether the circuit breaker is overloaded needs to be disconnected or not, which needs the customer to select according to the application, and in some cases, whether the circuit breaker can be freely switched to be tripped or not according to the requirement.
Most of alarm circuit boards of alarm non-tripping products in the current market are all installed inside the products, and the structure causes that besides the circuit boards are easy to be polluted in the test process, the reliability is reduced, a mode that the products leave the factory and are locked is also available, the alarm non-tripping mode cannot be changed into a tripping mode, the function is single, and the application range is limited.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the circuit breaker which is externally arranged on an overload signal receiving circuit, can be automatically installed and detached and can automatically select an overload protection mode.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the circuit breaker capable of automatically selecting overload protection mode comprises a base, a middle cover, a thermal element assembly and a control unit, wherein at least one end of the base is opened, the thermal element assembly is arranged in the base and used for monitoring overload of the circuit breaker, the middle cover is covered at the opening end of the base,
the selection module is arranged on the base or the middle cover, is connected with the warning piece and the shunt release and is used for opening the warning piece and/or the shunt release;
the switch piece is positioned on the outer surface of the middle cover and connected with the selection module to start the selection module;
the thermal element assembly includes an overload trigger; the middle cover is provided with a switch piece through hole, when the circuit breaker is overloaded, the overload trigger piece passes through the switch piece through hole and touches the switch piece so as to start the switch piece, the selection module comprises a base, a wire inlet end and at least two wire outlet ends, wherein the wire inlet end is arranged on the base, the wire inlet end is connected with the switch piece so as to receive a starting signal sent by the switch piece, and the two wire outlet ends are respectively connected with the warning piece and the shunt release.
According to the technical scheme, the middle cover is fixed on the base through the bolts, the middle cover is provided with the switch piece through holes at positions corresponding to the overload trigger piece, the switch piece penetrates through the switch piece through holes, so that the overload trigger piece can touch or approach or be far away from the switch piece, when the circuit breaker is electrified normally, a section of safe distance or direct contact exists between the overload trigger piece and the switch piece, namely, the switch piece is in an off or on state, when overload current exists in a circuit, the overload trigger piece starts to prop or approach or be far away from the switch piece, the switch piece is triggered to output signals, the overload signals are transmitted to the selection module through the signal wires, the alarm piece or the shunt tripping device is started through the selection module, the alarm piece and the shunt tripping device can be used as accessories of the circuit breaker, and are also selected parts because the switch piece is located outside the middle cover, the application range is enlarged, and the alarm piece and the shunt tripping device can be controlled to work or work together through one of the switch piece, the chip or the circuit board, so that only alarm or only trip is achieved, or alarm is achieved, and multiple modes are selected, and convenience is brought to users.
As a further arrangement of the invention, the thermal element assembly comprises a bimetallic strip, a connecting plate and a thermal element, wherein the connecting plate and the thermal element are connected together, and one end of the bimetallic strip is connected to the thermal element; the other end is suspended and is provided with the overload trigger piece.
According to the technical scheme, the bimetallic strip, the connecting plate and the thermal element are riveted into the thermal element assembly through rivets, then the thermal element assembly is assembled on the base, when the thermal element is overloaded, the thermal element heats, the line temperature rises, the bimetallic strip riveted on the thermal element is heated to warp or shorten towards the middle cover, and the switch piece is turned on or off.
As a further arrangement of the invention, the bimetal is arranged in parallel with the middle cover.
In the technical scheme, the overload trigger piece conveniently passes through the through hole of the switch piece, the installation space between the base and the middle cover is saved, and the layout is reasonable
As a further arrangement of the invention, the base is provided with a plurality of groups of the thermal element assemblies, the outer side of the middle cover is fixedly connected with a switch piece circuit board for installing switch pieces, the number of the switch pieces is consistent with that of the thermal element assemblies, and the switch piece circuit board is provided with signal wires connected with the selection module.
In the technical scheme, more than one thermal element assembly is arranged on the multi-stage circuit breaker, so that a plurality of switch pieces are needed, and all the switch pieces are needed to be connected in parallel, so that the arrangement of the switch piece circuit boards is beneficial to simplifying the layout, all the switch pieces are connected in parallel through the switch piece circuit boards, and then are output through signal wires in a unified way.
As a further arrangement of the invention, the circuit breaker further comprises a cover covering the middle cover, the switch being arranged between the middle cover and the cover.
Among the above-mentioned technical scheme, the face lid can be used to protection switch spare and switch spare circuit board, plays dustproof waterproof's effect, is provided with the press bar that corresponds with switch spare circuit board on the face lid, plays the effect of fixed switch spare line wheel board.
As a further arrangement of the invention, the inlet terminal is connected with the switch element through a signal wire;
and/or the wire outlet end is connected with the warning piece and the shunt release through a signal wire.
In the above technical solution, besides the signal line, the signal line may be connected through a pin, or connected wirelessly, or integrated together.
As a further arrangement of the invention, the base is mounted on an outer surface of the base;
and/or the selection module further comprises a change-over switch, which is used for selectively starting the warning piece or the shunt release or simultaneously starting the warning piece and the shunt release.
In the above technical scheme, the selection module is provided with the change-over switch, two wire outlet ends are connected in parallel on the change-over switch, and the overload protection mode is controlled through the change-over switch, such as an alarm or trip or alarm trip mode, and the like, and the mode of manual wiring can be realized.
As a further arrangement of the invention, the selection module further comprises a selection circuit board; the selection circuit board is electrically connected with the wire inlet end, the wire outlet end and the change-over switch, and the selection circuit board is used for setting a connection circuit among the tangent switch, the wire inlet end and the wire outlet end.
In the technical scheme, the wire inlet end, the wire outlet end and the change-over switch are connected through the wire selecting wheel plate, the wiring layout is simplified, the size is reduced, one wire outlet end is connected with the warning piece, and the other wire outlet end is connected with the warning piece and the shunt release, so that the switching is facilitated.
As a further arrangement of the invention, the warning member comprises one or more of a buzzer and an indicator light;
and/or the switch piece is a micro switch or a proximity switch or a sensor.
In the technical scheme, the buzzer and the indicator lamp are low in cost and long in service life, the switch piece plays roles in signal control and conduction, and the sensor can be a pressure sensor or a temperature sensor and the like.
As a further arrangement of the invention, the base is provided with a containing groove for installing the selective circuit board, the inner wall of the containing groove is provided with a slot for inserting and positioning the selective circuit board, and the containing groove is provided with a cover plate;
and/or a switch groove for exposing the change-over switch is arranged on the base, and the switch groove is communicated with the accommodating groove;
and/or the change-over switch is a shift switch, the upper cover of the shift switch is provided with a protective cover, the protective cover is provided with a driving rod which is linked with a shift lever of the shift switch, and the driving rod penetrates out of the switch groove and is exposed out of the outer operating end;
and/or the switch element circuit board is connected with the middle cover through a screw, and a dovetail groove for a signal wire to pass through is formed in the joint of the middle cover or the base or the middle cover and the base;
among the above-mentioned technical scheme, the setting of slot can conveniently select the circuit board fixed, avoids rocking at will, and the width of slot is unanimous with the thickness of selecting the circuit board, realizes zonulae occludens, and the apron is located slot's inserted hole one side, easy to assemble and maintenance, and the side of preferred switch slot is provided with NO TRIP and TRIP's sign, and the person of facilitating the use discerns change over switch's state, and the circuit board of selecting is located binding post's below, and it is detachable with the base to be connected, easy to assemble and maintenance. The setting of dovetail can conveniently walk the line, avoids the signal line to be pushed down, and overload trigger spare comprises screw rod and nut, and the screw rod is adjustable, can adjust the interval between bimetallic strip and the switch spare, and sensitivity when adjusting the overload, the safety cover has waterproof dirt-proof effect, and the operating end stretches out the switch groove and conveniently stirs.
The invention is further described below with reference to the accompanying drawings.
Drawings
FIG. 1 is an exploded view of a construction according to an embodiment of the present invention;
FIG. 2 is an exploded view of a thermal element assembly according to an embodiment of the present invention;
FIG. 3 is an exploded view of a selection module according to an embodiment of the present invention;
FIG. 4 is an exploded view of the structure of the face cover according to the embodiment of the present invention;
FIG. 5 is a schematic circuit diagram of a selection module according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a circuit board of a switch element according to an embodiment of the present invention;
fig. 7 is an exploded view of a structure of an embodiment of the present invention.
Base 1, middle cover 2, switch 21, switch through hole 22, switch circuit board 23, positioning hole 231, signal line 232, positioning boss 24, dovetail groove 25, mounting groove 26, shunt release 3, thermal element assembly 4, bimetal 41, connecting plate 42, thermal element 43, rivet 44, overload trigger 411, screw 4111, nut 4112, selection module 5, base 51, accommodation groove 511, slot 5111, cover 5112, switch groove 512, wiring terminal 52, selection circuit board 53, change-over switch 531, protective cover 5311, driving lever 5312, operation end 5312a, wire 54, wire inlet ends P1, P2, alarm non-trip wire outlet ends P3, P4, alarm trip wire outlet ends P5, P6, face cover 6, and presser bar 61.
Detailed Description
1-7, a circuit breaker capable of automatically selecting overload protection mode comprises a base 1, a middle cover 2, a shunt release 3 and a selection module 5, wherein a thermal element assembly 4 is arranged on the base 1, the selection module 5 comprises a base 51, a connection terminal 52 arranged on the base 51 and a selection circuit board 53 connected with the connection terminal 52, the connection terminal 52 comprises a wire inlet end P1, a connection plate 42 and a thermal element 43, the alarm non-release wire outlet end P3, the alarm non-release wire outlet end P4 and the alarm release wire outlet end P5, the alarm non-release wire outlet end P4 are connected with a warning piece, the alarm release wire outlet end P5, the alarm non-release wire outlet end P6 is connected with the shunt release 3, a change-over switch 531 for enabling the wire inlet end P1, the alarm non-release wire outlet end P2 to be conducted with the alarm non-release wire outlet end P3, the alarm non-release wire outlet end P4 and/or the wire inlet end P2 to be conducted with the connection plate 52 is arranged on the selection circuit board 53, the thermal element assembly 4 comprises a bimetallic strip 41, a connection plate 42 and a thermal element 43, the alarm non-release wire outlet end P3, the alarm non-release wire outlet end P4 is connected with the alarm non-release wire outlet end P4 and the alarm non-release wire outlet end P4 is connected with the alarm non-release wire outlet end P4, the alarm release wire outlet end P4 is connected with the alarm release wire outlet 4, the alarm connection piece is arranged on the thermal element 4, the thermal element 4 is opposite to the thermal element 4, the thermal element 1 is provided with the thermal element, the thermal element and the thermal element has a trigger piece, and the trigger piece 21 is arranged on the thermal element, and the thermal element 21 is opposite to the thermal element, and has an overload protection piece and has an end 21.
The shunt release is an accessory for remotely operating the shunt brake. When the power supply voltage is equal to any voltage between 70% and 110% of the rated control power supply voltage, the circuit breaker can be reliably disconnected. The shunt release is a short-time operation system, the coil power-on time generally cannot exceed 1S, otherwise, the coil is blown. In order to prevent the coil from being burnt, the plastic shell circuit breaker is characterized in that a micro-switch is connected in series with the shunt release, when the shunt release is attracted through an armature, the micro-switch is switched from a closed state to an open state, and the control circuit of the power supply of the shunt release is cut off. Even if the button is manually pressed, the shunt coil is not electrified all the time, so that the coil burning loss is avoided. When the breaker is closed again, the micro switch returns to the closed position again. The shunt release is mainly used for remotely opening the switch so as to control the open loop. Principle of action: the voltage release has voltage when the release (coil) works normally, and the voltage makes the latch hook of the release overcome the spring force so that the breaker can be normally closed. When the voltage drops to its set point, the latch hook of the trip will reset and the circuit breaker will trip to open the circuit.
The bimetal 41, the connecting plate 42 and the thermal element 43 are riveted into the thermal element assembly 4 through rivets 44, then the thermal element assembly 4 is assembled on the base 1, the middle cover 2 is fixed on the base 1 through screws, the middle cover 2 is provided with a switch piece through hole 22 at a position corresponding to the overload trigger piece 411, the switch piece 21 penetrates through the switch piece through hole 22, so that the overload trigger piece 411 can touch the switch piece 21, when the circuit breaker is normally electrified, a certain safety distance exists between the overload trigger piece 411 of the bimetal 41 and the switch piece 21, when overload current exists in a circuit, the thermal element 43 heats, the circuit temperature rises, the bimetal 41 riveted on the thermal element 43 is heated to warp towards the middle cover 2, the overload trigger piece 411 starts to prop against the switch piece 21, the switch piece 21 is triggered, and an overload signal is transmitted to the selection module 5 through a signal wire 232. In this embodiment, the bimetal 41 is disposed in parallel with the middle cap 2 to optimize the circuit breaker structure.
The selection module 5 is provided with a change-over switch 531, the alarm non-tripping outlet terminals P3 and P4 and the alarm tripping outlet terminals P5 and P6 are connected in parallel to the change-over switch 531, the alarm non-tripping or alarm tripping is controlled by the change-over switch 531, when the alarm non-tripping is switched to, the alarm non-tripping outlet terminals P3 and P4 are communicated with the inlet terminals P1 and P2 through the change-over switch 531, and when the alarm tripping is switched to, the alarm tripping outlet terminals P5 and P6 are communicated with the inlet terminals P1 and P2 through the change-over switch 531; in other implementations, the diverter switch switches the circuit breaker to activate the alert and shunt release when the circuit breaker is overloaded.
The outer side of the middle cover 2 is fixedly connected with a switch piece circuit board 23, at least one switch piece 21 is arranged on the switch piece circuit board 23, and a signal wire 232 connected with the wire inlet ends P1 and P2 is arranged on the switch piece circuit board 23. The thermal element assemblies 4 are generally more than one, so that the number of the switch pieces 21 is also more than one, a plurality of switch pieces 21 are connected in parallel through the switch piece circuit board 23, then the signal wires 232 are led out of the switch piece circuit board 23, the circuit is concise and convenient to lay out, the middle cover 2 can be provided with a mounting groove 26 matched with the switch piece circuit board 23, and the switch piece circuit board 23 is fixedly connected with the middle cover 2 through screws, so that the thermal element assembly is convenient to install and simple in structure.
A positioning structure is disposed between the middle cover 2 and the switch circuit board 23. The setting of location structure can make things convenient for the installation of switch spare circuit board 23, and the screw is screwed the preceding location through location structure earlier, makes things convenient for subsequent screw connection, improves installation effectiveness.
The above-described positioning structure includes the positioning boss 24 and the positioning hole 231 provided between the middle cap 2 and the switch element wiring board 23. The preferred positioning bosses 24 are two, correspond to the two ends of the switch piece circuit board 23, and the two positioning bosses 24 are in staggered arrangement, pass through the positioning holes 231 of the switch piece circuit board 23 through the positioning bosses 24 of the middle cover 2, pass through the switch piece circuit board 23 and self-tapping screw holes on the middle cover 2 to fix the switch piece circuit board 23 by self-tapping screws, and the mounting groove 26 also has a positioning effect on the switch piece circuit board 23, so that the two can complement each other or take one of them, and the structure is simple and the mounting is convenient.
The switch circuit board 23 is connected with the middle cover 2 through a screw, a dovetail groove 25 through which the signal line 232 passes is formed on the peripheral side of the middle cover 2, and the overload trigger 411 includes a screw 4111 and a nut 4112. The dovetail groove 25 is arranged to facilitate wiring, so that the signal wire 232 is prevented from being pressed, the overload trigger 411 is composed of a screw 4111 and a nut 4112, the screw 4111 is adjustable, the distance between the bimetal 41 and the switch 21 can be adjusted, and the sensitivity during overload is adjusted.
The upper cover of the middle cover 2 is provided with a surface cover 6, and the surface cover 6 is provided with a pressing rib 61 corresponding to the switch element circuit board 23. The signal wire 232 is led out from the dovetail groove 25 of the middle cover 2, and then the switch piece circuit board 23 is reinforced by the pressing rib 61 on the surface cover 6, so that the switch piece circuit board 23 is further fixed and prevented from shaking.
The base 51 is fixed on the base 1 or the middle cover 2, the base 51 is provided with a containing groove 511 for installing the selective circuit board 53, the base 51 is provided with a switch groove 512 for exposing the switch 531, and the switch groove 512 is communicated with the containing groove 511. The preferred side of the switch slot 512 is provided with NO trip and trip marks for the user to identify the status of the switch 531, and the selection circuit board 53 is located below the connection terminal 52 and is detachably connected to the base 51 for easy installation and maintenance.
The switch 531 is a shift switch, the upper cover of the shift switch is provided with a protective cover 5311, the protective cover 5311 is provided with a driving rod 5312 which is linked with a shift lever of the shift switch, and the driving rod 5312 passes through the switch slot 512 to be exposed at the outer shape operation end 5312a. The protection cover 5311 has waterproof and dustproof functions, and the operation end 5312a extends out of the switch groove 512 to facilitate pulling.
The wire inlet ends P1 and P2, the alarm non-trip wire outlet ends P3 and P4, and the alarm trip wire outlet ends P5 and P6 are all connected with the selection circuit board 53 through wires 54, a slot 5111 for inserting the selection circuit board 53 is arranged on the inner wall of the accommodating groove 511, and a cover plate 5112 is arranged on the accommodating groove 511. The setting of slot 5111 can conveniently select circuit board 53 fixed, avoids rocking at will, and the width of slot 5111 is unanimous with the thickness of selecting circuit board 53, realizes zonulae occludens, and apron 5112 is located slot 5111's inserted hole one side, easy to assemble and maintenance.
The warning part comprises one or more of a buzzer and an indicator lamp, and the switch part 21 is a micro switch or a proximity switch or a sensor. The buzzer and the indicator lamp are low in cost and long in service life, the switch piece 21 plays roles of signal control and conduction, and the sensor can be a pressure sensor or a temperature sensor and the like.
Both ends of the signal line 232 led out from the middle cover 2 are connected to the wire inlet ends P1 and P2 of the selection module 5, respectively. The assembly steps are as follows: the shift switch is first passed through the switch slot 512, then the two ends of the selection circuit board 53 are aligned to the slot 5111, and the protection cover 5311 is pressed against the shift switch. Finally, the cover plate 5112 is fixed with the base 511 by self-tapping screws. The realization function is as follows: firstly, the signal wires 232 are respectively connected to the wire inlet ends P1 and P2, once the overload alarm signal of the product is transmitted into the selection circuit board 53 through the interface, the alarm non-tripping wire outlet ends P3 and P4 can be connected to a circuit with an alarm signal such as a buzzer or an indicator lamp, and the alarm tripping wire outlet ends P5 and P6 are connected with the shunt release. The implementation mode is as follows: when the shift switch is shifted to the NO TRIP, the alarm non-TRIP wire outlet ends P3 and P4 are conducted with the wire inlet ends P1 and P2 and are connected with an external alarm wire, when overload conditions occur in the wire, an overload alarm function is realized, and the alarm TRIP wire outlet ends P5 and P6 are disconnected with the wire inlet ends P1 and P2 at the moment, and NO output is generated. When the shift switch is shifted to TRIP, the alarm non-tripping outlet terminals P3 and P4 are disconnected with the inlet terminals P1 and P2, the alarm tripping outlet terminals P5 and P6 are communicated with the inlet terminals P1 and P2, the shunt release 3 receives signals to execute tripping action, and the circuit breaker is disconnected, so that an overload tripping function is realized. The assembly is simple, the reliability is relatively high, the switch piece circuit board 23 is equivalent to the accessory and can be independently installed, the switch piece circuit board 23 is positioned between the middle cover 2 and the face cover 6, the influence of the test of the product is small, and the possibility of failure is lower.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
The present invention is not limited to the above-described embodiments, and those skilled in the art, based on the disclosure of the present invention, may implement the present invention in various other embodiments, or simply change or modify the design structure and thought of the present invention, which fall within the protection scope of the present invention.
Claims (8)
1. The utility model provides a circuit breaker that can independently select overload protection mode, includes base and well lid, at least one end opening of base, and be provided with in the base and be used for monitoring the overload of circuit breaker's hot element subassembly, well lid closes the open end of base, its characterized in that: also comprises a selection module, a base, a surface cover and a switch piece,
the selection module is arranged on the base or the middle cover, is connected with the warning piece and the shunt release and is used for opening the warning piece and/or the shunt release;
the switch piece is positioned on the outer surface of the middle cover, is connected with the selection module and is used for starting the selection module, the surface cover is covered on the middle cover, and the switch piece is arranged between the middle cover and the surface cover;
the base is arranged on the outer surface of the base, the base is provided with a containing groove for installing the selective circuit board, the inner wall of the containing groove is provided with a slot for inserting and positioning the selective circuit board, and the containing groove is provided with a cover plate;
and/or a switch groove for exposing the change-over switch is arranged on the base, and the switch groove is communicated with the accommodating groove;
the base is provided with a plurality of groups of the thermal element assemblies, the outer side of the middle cover is fixedly connected with a switch piece circuit board used for installing switch pieces, the number of the switch pieces is consistent with that of the thermal element assemblies, and the switch piece circuit board is provided with signal wires connected with the selection module;
the thermal element assembly includes an overload trigger; the middle cover is provided with a switch piece through hole, when the circuit breaker is overloaded, the overload trigger piece passes through the switch piece through hole and touches the switch piece so as to start the switch piece, the selection module comprises a base, a wire inlet end and at least two wire outlet ends, wherein the wire inlet end is arranged on the base, the wire inlet end is connected with the switch piece so as to receive a starting signal sent by the switch piece, and the two wire outlet ends are respectively connected with the warning piece and the shunt release.
2. The circuit breaker capable of autonomously selecting an overload protection mode according to claim 1, wherein: the thermal element assembly comprises a bimetallic strip, a connecting plate and a thermal element, wherein the connecting plate is connected with the thermal element; the other end is suspended and is provided with the overload trigger piece.
3. The circuit breaker capable of autonomously selecting an overload protection mode according to claim 2, wherein: the bimetallic strip is arranged in parallel with the middle cover.
4. The circuit breaker capable of autonomously selecting an overload protection mode according to claim 1, wherein: the incoming line end is connected with the switch piece through a signal line;
and/or the wire outlet end is connected with the warning piece and the shunt release through a signal wire.
5. A circuit breaker capable of autonomously selecting an overload protection mode according to claim 1 or 2 or 3, characterized in that: the selection module further comprises a change-over switch, and the change-over switch is used for selectively starting the warning piece or the shunt release or simultaneously starting the warning piece and the shunt release.
6. The circuit breaker capable of autonomously selecting an overload protection mode according to claim 4, wherein: the selection module further comprises a selection circuit board; the selection circuit board is electrically connected with the wire inlet end, the wire outlet end and the change-over switch, and the selection circuit board is used for setting a connecting circuit among the change-over switch, the wire inlet end and the wire outlet end.
7. The circuit breaker capable of autonomously selecting an overload protection mode according to claim 1 or 2 or 3 or 6, characterized in that: the warning piece comprises one or more of a buzzer and an indicator lamp;
and/or the switch piece is a micro switch or a proximity switch.
8. The circuit breaker of claim 7, wherein the overload protection mode is autonomously selectable: the switch is a shift switch, a protective cover is covered on the shift switch, a driving rod which is linked with a shift rod of the shift switch is arranged on the protective cover, and the driving rod penetrates out of the switch groove and is exposed out of the outer operating end;
and/or the switch element circuit board is connected with the middle cover through a screw, and a dovetail groove for a signal wire to pass through is formed in the joint of the middle cover or the base or the middle cover and the base.
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| CN202111136662.8A CN113963997B (en) | 2021-09-27 | 2021-09-27 | Circuit breaker capable of automatically selecting overload protection mode |
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| CN113963997B true CN113963997B (en) | 2023-12-26 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0246618A (en) * | 1988-08-05 | 1990-02-16 | Fuji Electric Co Ltd | Operation device of attachment switch of circuit breaker |
| CN101009425A (en) * | 2006-12-28 | 2007-08-01 | 人民电器集团有限公司 | Over current protection system of the breaker and its operating method |
| CN201323168Y (en) * | 2008-09-03 | 2009-10-07 | 深圳市泰永科技股份有限公司 | Creepage accessory with alarm and tripping change-over switch |
| CN102332702A (en) * | 2011-09-15 | 2012-01-25 | 樊嵩 | Intelligent real-time on-line displaying and controlling leakage protector and control method thereof |
| CN204189741U (en) * | 2014-11-14 | 2015-03-04 | 德力西电气有限公司 | A kind of breaker tripping mechanism |
| CN206379317U (en) * | 2017-01-22 | 2017-08-04 | 海格科技股份有限公司 | Rccb |
| CN108321043A (en) * | 2018-03-09 | 2018-07-24 | 德力西电气有限公司 | A kind of alarm module for breaker of plastic casing |
| CN113053681A (en) * | 2021-04-29 | 2021-06-29 | 浙江人民电器有限公司 | Dual-power transfer switch with selectable overload alarm non-tripping function |
| CN216288218U (en) * | 2021-09-27 | 2022-04-12 | 德力西电气有限公司 | Circuit breaker capable of automatically selecting overload protection mode |
-
2021
- 2021-09-27 CN CN202111136662.8A patent/CN113963997B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0246618A (en) * | 1988-08-05 | 1990-02-16 | Fuji Electric Co Ltd | Operation device of attachment switch of circuit breaker |
| CN101009425A (en) * | 2006-12-28 | 2007-08-01 | 人民电器集团有限公司 | Over current protection system of the breaker and its operating method |
| CN201323168Y (en) * | 2008-09-03 | 2009-10-07 | 深圳市泰永科技股份有限公司 | Creepage accessory with alarm and tripping change-over switch |
| CN102332702A (en) * | 2011-09-15 | 2012-01-25 | 樊嵩 | Intelligent real-time on-line displaying and controlling leakage protector and control method thereof |
| CN204189741U (en) * | 2014-11-14 | 2015-03-04 | 德力西电气有限公司 | A kind of breaker tripping mechanism |
| CN206379317U (en) * | 2017-01-22 | 2017-08-04 | 海格科技股份有限公司 | Rccb |
| CN108321043A (en) * | 2018-03-09 | 2018-07-24 | 德力西电气有限公司 | A kind of alarm module for breaker of plastic casing |
| CN113053681A (en) * | 2021-04-29 | 2021-06-29 | 浙江人民电器有限公司 | Dual-power transfer switch with selectable overload alarm non-tripping function |
| CN216288218U (en) * | 2021-09-27 | 2022-04-12 | 德力西电气有限公司 | Circuit breaker capable of automatically selecting overload protection mode |
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| CN113963997A (en) | 2022-01-21 |
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