CN110880439A - Miniature circuit breaker - Google Patents
Miniature circuit breaker Download PDFInfo
- Publication number
- CN110880439A CN110880439A CN201811059098.2A CN201811059098A CN110880439A CN 110880439 A CN110880439 A CN 110880439A CN 201811059098 A CN201811059098 A CN 201811059098A CN 110880439 A CN110880439 A CN 110880439A
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- Prior art keywords
- driving
- circuit breaker
- miniature circuit
- circuit board
- piece
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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
-
- 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
- H01H2071/044—Monitoring, detection or measuring systems to establish the end of life of the switching device, can also contain other on-line monitoring systems, e.g. for detecting mechanical failures
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Abstract
The invention provides a miniature circuit breaker, which comprises a shell, a handle, a breaking connecting rod mechanism, an electromagnetic release, a moving contact, a fixed contact, an arc extinguishing grid, an arc striking plate, a bimetallic strip, a wire inlet end and a wire outlet end, wherein the handle is arranged on the shell; the shell is also provided with at least one first connecting sheet and at least one second connecting sheet; the detection device also comprises a first driving piece, a second driving piece, a third driving piece, a detection mechanism, a first circuit board, a driving mechanism, a third connecting piece, a second circuit board and a microswitch; the detection mechanism, the driving mechanism and the microswitch are respectively in communication connection with the first circuit board. According to the technical scheme provided by the invention, the protection precision of the miniature circuit breaker can be improved, the intelligent control can be realized, the unified monitoring, management, control and monitoring of the opening and closing states of a plurality of miniature circuit breakers can be realized, the working efficiency is improved, and the safety of power distribution is improved.
Description
Technical Field
The invention belongs to the technical field of circuit breakers, and particularly relates to a miniature circuit breaker.
Background
The miniature circuit breaker is a low-voltage circuit breaker used on a line with rated voltage of 230/400V and rated current of below 63A at 50/60Hz, and is commonly used in industrial, commercial, high-rise and civil houses and other places. In the prior art, a miniature circuit breaker usually adopts an electromagnetic trip to realize short circuit or overload protection, adopts a bimetallic strip to realize overheat protection, and has the problems of higher discreteness, time delay and poor protection precision due to the difference of physical characteristics of the electromagnetic trip and the bimetallic strip, so that the miniature circuit breaker still has the problems of potential safety hazard and incomplete protection in the protection of a power distribution system. Simultaneously, there is also unknown problem in traditional miniature circuit breaker's divide-shut brake state to lack unified monitoring, management and control to every miniature circuit breaker, need artifical scene to look over and control, consuming time is hard, and work efficiency is low. In view of the above problems, the present invention discloses a micro circuit breaker to solve the above problems.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a miniature circuit breaker, can solve the problems of time delay, poor protection precision, potential safety hazard and incomplete protection of the miniature circuit breaker in the prior art, improves the protection precision, realizes intelligent control, can monitor the opening and closing states of the miniature circuit breaker in real time, realizes unified monitoring, management and control of a plurality of miniature circuit breakers, and improves the working efficiency.
In order to achieve the above object, an embodiment of the present invention provides a miniature circuit breaker, including a housing, a handle, a breaking link mechanism, an electromagnetic trip, a moving contact, a static contact, an arc chute, an arc striking plate, a bimetallic strip, at least one wire inlet end and at least one wire outlet end; the static contact is electrically connected with the electromagnetic release; the bimetallic strip is electrically connected with the moving contact; the shell is also provided with at least one first connecting sheet and at least one second connecting sheet; the device also comprises a first driving piece and a second driving piece; the bimetallic strip is in driving connection with the first driving piece; the second driving piece is in driving connection with the first driving piece; the first driving piece is in driving connection with the breaking connecting rod mechanism; the first connecting piece is electrically connected with the bimetallic strip; the second connecting sheet is electrically connected with the electromagnetic release; the detection device also comprises a detection mechanism, a first circuit board and a driving mechanism; the first circuit board is provided with a first microprocessor and a short circuit, the detection mechanism and the driving mechanism are respectively in communication connection with the first circuit board, and the driving mechanism is in driving connection with the second driving piece. Optionally, the detection mechanism is at least one of a current transformer, a voltage transformer and a temperature sensor. Optionally, the driving mechanism is at least one of a solenoid coil, an electric push rod, a hydraulic rod and a pneumatic rod. Therefore, through the first circuit board, the first microprocessor analyzes and processes the current and voltage signals in the circuit of the miniature circuit breaker and the temperature signal of the miniature circuit breaker in real time, which are collected by the detection mechanism, and then outputs breaking or closing signals to the driving mechanism, so that the driving mechanism controls the linkage of the second driving piece and the first driving piece to drive the breaking connecting rod mechanism to act, the moving contact and the static contact are driven to be switched on and off, on the basis of keeping the traditional overload and overheat protection of the circuit breaker, the intelligent rapid switching-on and switching-off of the miniature circuit breaker are realized, the protection comprehensiveness and the protection precision of the miniature circuit breaker are improved, and the safety of a power distribution system is improved.
Furthermore, the first driving piece comprises a first connecting portion and a driving portion, the first connecting portion is in driving connection with the bimetallic strip, and the driving portion is in driving connection with the disjunction connecting rod mechanism.
Furthermore, the second driving piece comprises a touch part, a rotating shaft part and a second connecting part, the touch part is in driving connection with the driving mechanism, and the second connecting part is in driving connection with the first connecting part.
Further, the intelligent control system also comprises a microswitch and a third driving piece, wherein the microswitch is in communication connection with the first circuit board.
Furthermore, the third driving piece comprises a third connecting portion and a fourth connecting portion, the third connecting portion is in driving connection with the handle, and the fourth connecting portion is in driving connection with the microswitch. Therefore, when the miniature circuit breaker is switched on and switched off, the microswitch can be driven in real time through the third driving piece, and signals are transmitted to the first circuit board through the microswitch, so that the switching-on and switching-off state of the miniature circuit breaker can be monitored in real time, and monitoring and management of managers are facilitated.
Further, the connecting device also comprises a third connecting sheet, and the first connecting sheet is electrically connected with the bimetallic strip through the third connecting sheet.
The wire inlet end is connected with the first connecting piece through the first connecting piece; the second connecting piece is connected with the wire outlet end through a second connecting piece.
Alternatively, the first connector and the second connector may be plugs, sockets, screws or wire pressing frames.
And the second circuit board is in communication connection with the short circuit, and a second processor, a power supply and a communication port are arranged on the second circuit board. The communication port can be in communication connection with an external device; the power supply is used for supplying power to at least one of the first circuit board, the second circuit board, the detection mechanism and the driving mechanism; therefore, the second circuit board can be connected with a plurality of miniature circuit breakers through each short circuit, and meanwhile, the second processor can also analyze and process the current and voltage signals in the circuit of each plug-in miniature circuit breaker and the temperature signals of the plug-in miniature circuit breakers collected by the detection mechanism transmitted by the first circuit board in real time through the second circuit board and then directly output or output breaking or closing signals to the driving mechanism of each miniature circuit breaker through the first circuit board, so that the driving mechanism controls the second driving piece and the first driving piece to be linked to drive the breaking connecting rod mechanism to act and drive the moving contact and the static contact to be switched on and off, the intelligent rapid switching-on and-off of the plug-in miniature circuit breakers are realized on the basis of keeping the traditional overload overheat protection of the circuit breakers, and the protection comprehensiveness and the protection precision of the plug-in miniature circuit breakers are improved, the safety of distribution system is promoted, thereby realizing the unified monitoring, management and control of a plurality of miniature circuit breakers, improving the working efficiency and realizing the remote control.
Optionally, the first connecting piece, the second connecting piece and the third connecting piece are U-shaped or L-shaped or any combination of the two.
The miniature circuit breaker provided by the invention has the beneficial effects that: time delay and protection precision that can solve miniature circuit breaker among the prior art exist are poor, have potential safety hazard and protect incomprehensible problem, promote miniature circuit breaker's protection precision and realize miniature circuit breaker's intelligent control, also can realize unified monitoring, management and control to a plurality of miniature circuit breaker, can real-time supervision miniature circuit breaker's divide-shut brake state simultaneously, make things convenient for managers monitoring and management, improve work efficiency, promote distribution system's security.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from these without inventive effort.
Fig. 1 is a schematic structural diagram of a miniature circuit breaker according to a first embodiment of the present invention.
The reference numbers illustrate:
1. a housing; 2. a second connecting sheet; 3. a handle; 4. a breaking link mechanism; 5. an electromagnetic release; 6. a moving contact; 7. static contact; 8. an arc chute; 9. an arc striking plate; 10. a bimetal; 11. a third driving member; 1101. a third connecting portion; 1102. a fourth connecting portion; 12. a first driving member; 1201. a first connection portion; 1202. a drive section; 13. a second connecting member; 14. a microswitch; 15. a first connecting piece; 16. a first connecting member; 17. a wire inlet end; 18. a second driving member; 1801. a touch part; 1802. a rotating shaft part; 1803. a second connecting portion; 19. a drive mechanism; 20. a third connecting sheet; 21. a short circuit; 22. a first circuit board; 23. a wire outlet end; 24. detection mechanism, 25, first microprocessor.
Detailed Description
The following describes the miniature circuit breaker of the present invention in detail with reference to the accompanying drawings.
Example one
Fig. 1 shows a schematic structural diagram of a micro circuit breaker according to the first embodiment. As shown in fig. 1, a first preferred embodiment of the miniature circuit breaker according to the present invention includes a housing 1, a handle 3, a breaking link mechanism 4, an electromagnetic trip 5, a movable contact 6, a stationary contact 7, an arc chute 8, an arc striking plate 9, a bimetallic strip 10, at least one wire inlet end 17 and at least one wire outlet end 23; the static contact 7 is electrically connected with the electromagnetic release 5; the bimetallic strip 10 is electrically connected with the moving contact 6; the housing 1 is further provided with at least one first connecting piece 15 and at least one second connecting piece 2; further comprising a first drive member 12 and a second drive member 18; the bimetallic strip 10 is in driving connection with a first driving piece 12; the second driving member 18 is in driving connection with the first driving member 12; the first driving piece 12 is in driving connection with the breaking connecting rod mechanism 4; the first connecting piece 15 is electrically connected with the bimetallic strip 10; the second connecting piece 2 is electrically connected with the electromagnetic release 5; the detection mechanism 24, the first circuit board 22 and the driving mechanism 19 are also included; the first circuit board 22 is provided with a first microprocessor 25 and a short circuit 21, the detection mechanism 24 and the driving mechanism 19 are respectively in communication connection with the first circuit board 22, and the driving mechanism 19 is in driving connection with the second driving member 18.
Optionally, the detection mechanism 24 is at least one of a current transformer, a voltage transformer, and a temperature sensor. Alternatively, the driving mechanism 19 is at least one of a solenoid, an electric push rod, a hydraulic rod, and a pneumatic rod. Therefore, through the first circuit board, the first microprocessor analyzes and processes the current and voltage signals in the circuit of the miniature circuit breaker and the temperature signal of the miniature circuit breaker in real time, which are collected by the detection mechanism, and then outputs breaking or closing signals to the driving mechanism, so that the driving mechanism controls the linkage of the second driving piece and the first driving piece to drive the breaking connecting rod mechanism to act, the moving contact and the static contact are driven to be switched on and off, on the basis of keeping the traditional overload and overheat protection of the circuit breaker, the intelligent rapid switching-on and switching-off of the miniature circuit breaker are realized, the protection comprehensiveness and the protection precision of the miniature circuit breaker are improved, and the safety of a power distribution system is improved. For example, the first microprocessor in the first circuit board can determine power distribution abnormalities such as short-circuit current, overload current, leakage current, three-phase unbalanced current and the like through comparison with rated values such as rated current and the like according to the current signals, so that the driving mechanism is controlled to control the second driving piece and the first driving piece to be linked to drive the breaking connecting rod mechanism to act in real time, the moving contact and the static contact are driven to break the distribution line, the precise protection of the power distribution abnormalities such as short-circuit protection, overload protection, leakage protection, three-phase unbalanced current and the like is realized, the power distribution protection comprehensiveness and the protection precision of the miniature circuit breaker are improved, and the intelligent control is realized.
Optionally, the first and second microprocessors may be MC68HC908AP32 chips, and the first and second circuit boards may be PCB boards.
Further, the first driving member 12 includes a first connecting portion 1201 and a driving portion 1202, the first connecting portion 1201 is in driving connection with the bimetal 10, and the driving portion 1202 is in driving connection with the disjunction link mechanism 4.
Further, the second driving element 18 includes a touch portion 1801, a rotating shaft portion 1802, and a second connecting portion 1803, where the touch portion 1801 is in driving connection with the driving mechanism 19, and the second connecting portion 1803 is in driving connection with the first connecting portion 1201.
Further, a micro switch 14 and a third driving member 11 are included, and the micro switch 14 is connected with the first circuit board 22 in a communication mode.
Further, the third driving member 11 includes a third connecting portion 1101 and a fourth connecting portion 1102, the third connecting portion 1101 is in driving connection with the handle 3, and the fourth connecting portion 1102 is in driving connection with the micro switch 14. Therefore, when the miniature circuit breaker is switched on and off, the microswitch can be driven in real time through the third driving piece, signals are transmitted to the first circuit board through the microswitch, the switching-on and switching-off state of the miniature circuit breaker can be monitored in real time, the switching-on and switching-off state of each miniature circuit breaker can be mastered in real time, and monitoring and management of managers are facilitated.
Further, a third connecting piece 20 is further included, and the first connecting piece 15 is electrically connected with the bimetallic strip 10 through the third connecting piece 20.
Further, the device also comprises at least one first connecting piece 16 and at least one second connecting piece 13, wherein the first connecting piece 15 is connected with the wire inlet end 17 through the first connecting piece 16; the second connecting piece 2 is connected with the outlet end 23 through a second connecting piece 13.
Alternatively, the first connector and the second connector may be plugs, sockets, screws or wire pressing frames.
Further, a second circuit board is included, the second circuit board is in communication connection with the short circuit sub 21, and a second processor, a power supply and a communication port are arranged on the second circuit board. The communication port can be in communication connection with an external device; the power supply is used for supplying power to at least one of the first circuit board, the second circuit board, the detection mechanism and the driving mechanism; therefore, the second circuit board can be connected with a plurality of miniature circuit breakers through each short circuit, and meanwhile, the second processor can also analyze and process the current and voltage signals in the circuit of each plug-in miniature circuit breaker and the temperature signals of the plug-in miniature circuit breakers collected by the detection mechanism transmitted by the first circuit board in real time through the second circuit board and then directly output or output breaking or closing signals to the driving mechanism of each miniature circuit breaker through the first circuit board, so that the driving mechanism controls the second driving piece and the first driving piece to be linked to drive the breaking connecting rod mechanism to act and drive the moving contact and the static contact to be switched on and off, the intelligent rapid switching-on and-off of the plug-in miniature circuit breakers are realized on the basis of keeping the traditional overload overheat protection of the circuit breakers, and the protection comprehensiveness and the protection precision of the plug-in miniature circuit breakers are improved, the safety of the power distribution system is improved. For example, the second microprocessor in the second circuit board can determine power distribution abnormalities such as short-circuit current, overload current, leakage current, three-phase unbalanced current and the like through comparison with rated values such as rated current and the like according to current signals, so that the second microprocessor can directly control in real time or control the driving mechanism of each miniature circuit breaker through the first circuit board to control the second driving piece and the first driving piece to be linked to drive the breaking connecting rod mechanism to act, the moving contact and the fixed contact are driven to break the distribution line quickly and accurately, the accurate protection of the power distribution abnormalities such as short-circuit protection, overload protection, leakage protection, three-phase unbalanced current and the like is realized, the power distribution protection comprehensiveness and the protection accuracy of the plug-in miniature circuit breaker are improved, and the intelligent. Therefore, unified monitoring, management and control of the plurality of miniature circuit breakers are realized, the working efficiency is improved, and remote control can also be realized.
Optionally, the first connecting piece 15, the second connecting piece 2 and the third connecting piece 20 are U-shaped or L-shaped or any combination of the two.
The miniature circuit breaker provided by the invention can solve the problems of time delay, poor protection precision, potential safety hazard and incomplete protection of the miniature circuit breaker in the prior art, improves the protection precision of the miniature circuit breaker, realizes intelligent control of the miniature circuit breaker, can realize unified monitoring, management and control of a plurality of miniature circuit breakers, can monitor the opening and closing states of the miniature circuit breaker in real time, is convenient for monitoring and management of managers, improves the working efficiency and improves the safety of a power distribution system.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and all such changes or substitutions are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A miniature circuit breaker comprises a shell (1), a handle (3), a breaking connecting rod mechanism (4), an electromagnetic release (5), a moving contact (6), a static contact (7), an arc extinguishing bar (8), an arc striking plate (9), a bimetallic strip (10), at least one wire inlet end (17) and at least one wire outlet end (23); the static contact (7) is electrically connected with the electromagnetic release (5); the bimetallic strip (10) is electrically connected with the moving contact (6); characterized in that the housing (1) is further provided with at least one first connecting piece (15) and at least one second connecting piece (2); further comprising a first drive member (12) and a second drive member (18); the bimetallic strip (10) is in driving connection with a first driving piece (12); the second driving part (18) is in driving connection with the first driving part (12); the first driving piece (12) is in driving connection with the breaking connecting rod mechanism (4); the first connecting piece (15) is electrically connected with the bimetallic strip (10); the second connecting sheet (2) is electrically connected with the electromagnetic release (5); the device also comprises a detection mechanism (24), a first circuit board (22) and a driving mechanism (19); the first circuit board (22) is provided with a first microprocessor (25) and a short circuit (21), the detection mechanism (24) and the driving mechanism (19) are respectively in communication connection with the first circuit board (22), and the driving mechanism (19) is in driving connection with the second driving piece (18).
2. The miniature circuit breaker of claim 1 wherein said sensing mechanism (24) is at least one of a current transformer, a voltage transformer, and a temperature sensor.
3. The miniature circuit breaker of claim 1 wherein said drive mechanism (19) is at least one of a solenoid, an electric push rod, a hydraulic rod, and a pneumatic rod.
4. The miniature circuit breaker according to claim 1, wherein said first actuator (12) comprises a first connecting portion (1201) and a driving portion (1202), said first connecting portion (1201) being in driving connection with said bimetal (10), said driving portion (1202) being in driving connection with said breaking linkage (4).
5. The miniature circuit breaker according to claim 4, wherein said second driving member (18) comprises a touch portion (1801), a rotation shaft portion (1802) and a second connecting portion (1803), the touch portion (1801) is in driving connection with said driving mechanism (19), and the second connecting portion (1803) is in driving connection with the first connecting portion (1201).
6. The miniature circuit breaker of claim 1 further comprising a microswitch (14) and a third actuator (11), the microswitch (14) being in communicative connection with said first circuit board (22).
7. The miniature circuit breaker according to claim 6 wherein said third actuator (11) comprises a third connecting portion (1101) and a fourth connecting portion (1102), said third connecting portion (1101) being in driving connection with said handle (3) and said fourth connecting portion (1102) being in driving connection with said microswitch (14).
8. The miniature circuit breaker according to claim 1, further comprising a third connecting piece (20), wherein said first connecting piece (15) is electrically connected to said bimetal (10) through said third connecting piece (20).
9. The miniature circuit breaker according to claim 1, further comprising at least one first connector (16) and at least one second connector (13), said first connector (15) being connected to said inlet terminal (17) by means of said first connector (16); the second connecting piece (2) is connected with the wire outlet end (23) through a second connecting piece (13).
10. The miniature circuit breaker of claim 1 further comprising a second circuit board, said second circuit board being communicatively coupled to said shorting sub (21), said second circuit board having a second processor, power source, and communication port disposed thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811059098.2A CN110880439A (en) | 2018-09-06 | 2018-09-06 | Miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811059098.2A CN110880439A (en) | 2018-09-06 | 2018-09-06 | Miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110880439A true CN110880439A (en) | 2020-03-13 |
Family
ID=69727535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811059098.2A Pending CN110880439A (en) | 2018-09-06 | 2018-09-06 | Miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110880439A (en) |
-
2018
- 2018-09-06 CN CN201811059098.2A patent/CN110880439A/en active Pending
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