CN211879320U - Circuit board structure of residual current circuit breaker - Google Patents
Circuit board structure of residual current circuit breaker Download PDFInfo
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- CN211879320U CN211879320U CN202020973973.4U CN202020973973U CN211879320U CN 211879320 U CN211879320 U CN 211879320U CN 202020973973 U CN202020973973 U CN 202020973973U CN 211879320 U CN211879320 U CN 211879320U
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Abstract
The utility model discloses a circuit board structure of a leakage circuit breaker, which comprises a main control board and a key board, wherein one side of the key board is provided with a plurality of contact pins, and the contact pins are parallel to the key board; the key board butt joint socket matched with the contact pin is arranged on one side of the front face of the main control board, the contact pin of the key board is perpendicular to the main control board and inserted into the butt joint socket, a key is arranged on the key board, and the key is arranged on one side, far away from the center of the main control board, of the key board. Different from the prior art, the technical scheme realizes the power supply of the processor by arranging the switching power supply area on the circuit board of the residual current circuit breaker and adopting the mode of arranging the switching power supply on the circuit board, thereby saving additional power supply boards, reducing the number of the circuit boards and simplifying the installation process.
Description
Technical Field
The utility model relates to a residual current circuit breaker field especially relates to a residual current circuit breaker's circuit board structure.
Background
The residual current circuit breaker is equipment which plays a role of disconnecting a circuit power supply when a circuit is abnormal (such as overload, short circuit, electric leakage and the like), and avoids damage or potential safety hazard caused by continuous power supply to following electrical appliances. The intelligent residual-current circuit breaker is provided with an intelligent chip (such as a single chip microcomputer) in the residual-current circuit breaker, so that control or state acquisition of the circuit breaker is achieved. The existing intelligent residual current circuit breaker comprises a main control board, a power supply board, a key board and the like, wherein the existing intelligent residual current circuit breaker is applied by the applicant (application number: 201920552198.2), and the existing intelligent residual current circuit breaker is too many in circuit boards and complex in installation.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a circuit board structure of the residual current circuit breaker, which solves the problems of too many circuit boards and too complex installation.
In order to achieve the above object, the inventor provides a circuit board structure of a leakage circuit breaker, which comprises a main control board and a key board, wherein a plurality of contact pins are arranged on one side of the key board, and the contact pins are parallel to the key board; a key board butt-joint socket matched with the contact pin is arranged on one side of the front surface of the main control board, the contact pin of the key board is perpendicular to the main control board and inserted into the butt-joint socket, a key is arranged on the key board, and the key is arranged on one side, far away from the center of the main control board, of the key board;
the main control board comprises a main body area and a switching power supply area on the upper side of the main body area, and the main control board comprises a mains supply interface, a switching power supply and a main controller; the main control board is arranged on the back face of the main control board main body area, the switching power supply comprises a transformer and a filter capacitor, the commercial power interface, the transformer and the filter capacitor are arranged on the front face of the switching power supply area, the commercial power interface is connected with the switching power supply, the switching power supply is connected with the main control board, and keys of the key board are connected with the main control board through contact pins and butt-joint sockets.
Further, the main control board includes: the Bluetooth module is arranged on the main control panel and arranged on one side of the key board in parallel, and the Bluetooth module is electrically connected with the main control panel.
Furthermore, the bluetooth module is arranged on one side of the key board far away from the center of the main control board.
Further, the key sheet further includes: the device comprises a rear-end 220V input port, a zero-sequence current transformer test winding port, a test key, an indicator light or a multifunctional key; the rear-end 220V input port and the zero-sequence current transformer test winding port are arranged on one side, close to the center of the main control board, of the key board, and the test key, the indicator light and the multifunctional key are located on one side, far away from the center of the main control board, of the key board;
the rear end 220V input port, the test winding port connected with the zero-sequence current transformer, the test key, the indicator lamp or the multifunctional key are connected with the main controller through the contact pin and the butt socket.
Further, still include on the main control board: a short circuit detection interface;
the short circuit detection interface is arranged on the front face of the main control board and is connected with the main control board.
Furthermore, the main control board further comprises a current acquisition interface and a leakage current acquisition interface which are arranged on the front surface of the main control board, and the current acquisition interface and the leakage current acquisition interface are electrically connected with the main controller.
Furthermore, the main control board comprises a power supply interface area arranged on the lower side of the main body part, the power supply interface area is provided with an external power supply interface, a direct current voltage reduction circuit is arranged on the main control board, the input end of the direct current voltage reduction circuit of the external power supply interface is connected, and the output end of the direct current voltage reduction circuit is connected with the main controller.
Further, the master controller is a single chip microcomputer.
Different from the prior art, the technical scheme realizes the power supply of the processor by arranging the switching power supply area on the circuit board of the residual current circuit breaker and adopting the mode of arranging the switching power supply on the circuit board, thereby saving additional power supply boards, reducing the number of the circuit boards and simplifying the installation process.
Drawings
Fig. 1 is a schematic structural view of the circuit board placed in the residual current circuit breaker;
fig. 2 is a bottom view of the circuit board structure of the residual current circuit breaker;
fig. 3 is a front view of a circuit board structure of the residual current circuit breaker;
fig. 4 is a rear view of a circuit board structure of the earth leakage breaker;
fig. 5 is a left side view of the circuit board structure of the electrical leakage breaker;
fig. 6 is a right side view of the circuit board structure of the electrical leakage breaker;
fig. 7 is a top view of the circuit board structure of the residual current circuit breaker.
Description of reference numerals:
1. a main control board; 10. an earth leakage circuit breaker; 2. a key sheet;
12. a mains supply interface; 13. a master controller; 14. the key board is butted with the socket; 15. a Bluetooth module; 16. a current leakage current collection interface; 17. a switching power supply; 18. a short circuit detection interface; 19. an external power supply interface;
21. inserting a pin; 22. a rear end 220V input port; 23. connecting a test winding port of the zero sequence current transformer; 24. testing the key; 25. an indicator light; 26. a multifunctional key;
3. a main body area, 4, a switching power supply area, 5 and a power supply interface area.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
Referring to fig. 1 to 7, the present embodiment provides a circuit board structure of an electrical leakage breaker, including a main control board 1 and a key board 2, where the main control board 1 is used to be placed inside an electrical leakage breaker 10, and the outline of the main control board is the same as the outline of the internal cavity of the electrical leakage breaker. One side of the key board 2 is provided with a plurality of pins 21, and the pins 21 are parallel to the key board 2. The key board butt joint socket 14 matched with the contact pin 21 is arranged on one side of the front face of the main control board 1, the contact pin of the key board is perpendicular to the main control board and inserted into the butt joint socket, a key is arranged on the key board, and the key is arranged on one side, far away from the center of the main control board, of the key board. The main control board comprises a main body area 3 and a switching power supply area 4 on the upper side of the main body area, and the main control board comprises a mains supply interface 12, a main controller 13 and a switching power supply 17; the main control board is arranged on the back face of the main control board main body area, the switching power supply comprises a transformer 170 and a filter capacitor 171, the commercial power interface, the transformer and the filter capacitor are arranged on the front face of the switching power supply area, the commercial power interface is connected with the switching power supply, the switching power supply is connected with the main control board, and keys of the key board are connected with the main control board through contact pins and butt-joint sockets.
The utility model discloses in, in order to make firm the connecting on main control board 1 of keypad 2, and can the stable connection. In some embodiments, the pins 21 are grouped into four groups, and two groups. The commercial power interface is positioned on the uppermost surface and is closest to the commercial power input interface of the electric leakage circuit breaker, so that the commercial power interface is conveniently connected with the commercial power input of the electric leakage circuit breaker. The mains supply is supplied to the main controller for use after voltage conversion of the switching power supply. The main controller can be a chip with processing function, such as CPU, MCU, singlechip, etc. The switching power supply circuit has a very wide application in the existing mobile phone charger, and generally includes: rectifier bridge, power chip, transformer, filter capacitor etc. realize commercial power and change into direct current voltage, do not give unnecessary details here. The utility model discloses all set up great device (like transformer and filter capacitor, keypad) openly, place the inside cavity part of electric leakage circuit breaker promptly, realized setting up transformation circuit on the main control board. Power panels are reduced, and the installation process is simplified. Meanwhile, the scheme of using the isolation transformer also reduces the volume and facilitates the placement.
Further, the main control board includes: the Bluetooth module 15 is arranged on the main control panel and arranged on one side of the key board in parallel, and the Bluetooth module is electrically connected with the main control panel. The Bluetooth module can enable the master controller to send data to the remote device in a Bluetooth mode, and data interaction of the master controller is facilitated. Preferably, the bluetooth module is arranged on one side of the key board far away from the center of the main control board. Like this bluetooth module can be close to leakage circuit breaker's shell lateral wall, avoids the signal to be shielded by the keypad, is favorable to the sending of signal.
In order to realize the detection to the multiple functions of electric leakage circuit breaker, the keypad still includes: the device comprises a rear end 220V input port 22, a zero sequence current transformer test winding port 23, a test key 24, an indicator lamp 25 or a multifunctional key 26; the rear-end 220V input port and the zero-sequence current transformer test winding port are arranged on one side, close to the center of the main control board, of the key board, and the test key, the indicator light and the multifunctional key are located on one side, far away from the center of the main control board, of the key board; the rear end 220V input port, the test winding port connected with the zero-sequence current transformer, the test key, the indicator lamp or the multifunctional key are connected with the main controller through the contact pin and the butt socket. The rear end 220V input port is used for being connected with the rear end output of the residual current circuit breaker, when the residual current circuit breaker is switched on, the rear end has output, and then the rear end 220V input end has voltage. The residual current circuit breaker can collect, thereby realizing the voltage detection of the rear end 220V. The test key 24 or the multi-function key 26 may be used by the master to capture different key states for different functional responses. The zero sequence current transformer test winding port 23 is connected, so that the leakage test triggering of the leakage circuit breaker can be realized, and the detection of whether the leakage protection function of the leakage circuit breaker is normal or not is realized. The indicator light 25 is used for the master controller to prompt the function.
Further, still include on the main control board: a short detection interface 18; the short circuit detection interface is arranged on the front face of the main control board and is connected with the main control board. The short circuit detection interface is used for detecting whether the rear end of the residual current circuit breaker is short-circuited or not.
In order to collect the current condition and the leakage current condition, the main control board further comprises a current collection interface and a leakage current collection interface which are arranged on the front face of the main control board, and the current collection interface and the leakage current collection interface are electrically connected with the main controller.
The utility model discloses can supply power through switching power supply, in some embodiments, can also supply power by external direct current. The main control board comprises a power supply interface area 5 arranged on the lower side of the main body portion, an external power supply interface 19 is arranged in the power supply interface area, a direct current voltage reduction circuit is arranged on the main control board, the input end of the direct current voltage reduction circuit of the external power supply interface is connected, and the output end of the direct current voltage reduction circuit is connected with the main controller. The direct current step-down circuit can be a DCDC step-down circuit or an LDO linear step-down circuit, and can convert external direct current into working voltage of the main controller, so that multiple power supply modes are realized, and the direct current step-down circuit is suitable for different scenes.
In all embodiments of the utility model, in order to realize the detection of each function, need set up the connecting wire of butt joint on the earth leakage circuit breaker and set up corresponding processing circuit on the main control board, these function settings have been described with processing circuit on the patent that the applicant applied for before, the utility model discloses can adopt these current function settings and processing circuit, no longer describe herein.
It should be noted that, although the above embodiments have been described herein, the scope of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, the changes and modifications of the embodiments described herein, or the equivalent structure or equivalent process changes made by the contents of the specification and the drawings of the present invention, directly or indirectly apply the above technical solutions to other related technical fields, all included in the protection scope of the present invention.
Claims (8)
1. A circuit board structure of a residual current circuit breaker is characterized by comprising a main control board and a key board, wherein a plurality of contact pins are arranged on one side of the key board and are parallel to the key board; a key board butt-joint socket matched with the contact pin is arranged on one side of the front surface of the main control board, the contact pin of the key board is perpendicular to the main control board and inserted into the butt-joint socket, a key is arranged on the key board, and the key is arranged on one side, far away from the center of the main control board, of the key board;
the main control board comprises a main body area and a switching power supply area on the upper side of the main body area, and the main control board comprises a mains supply interface, a switching power supply and a main controller; the main control board is arranged on the back face of the main control board main body area, the switching power supply comprises a transformer and a filter capacitor, the commercial power interface, the transformer and the filter capacitor are arranged on the front face of the switching power supply area, the commercial power interface is connected with the switching power supply, the switching power supply is connected with the main control board, and keys of the key board are connected with the main control board through contact pins and butt-joint sockets.
2. The electrical leakage breaker circuit board structure as claimed in claim 1, wherein the main control board comprises: the Bluetooth module is arranged on the main control panel and arranged on one side of the key board in parallel, and the Bluetooth module is electrically connected with the main control panel.
3. The electrical leakage breaker circuit board structure of claim 2, wherein the bluetooth module is disposed on a side of the key board away from the center of the main control board.
4. The circuit board structure of a residual current circuit breaker according to claim 1, wherein said key sheet further comprises: the device comprises a rear-end 220V input port, a zero-sequence current transformer test winding port, a test key, an indicator light or a multifunctional key; the rear-end 220V input port and the zero-sequence current transformer test winding port are arranged on one side, close to the center of the main control board, of the key board, and the test key, the indicator light and the multifunctional key are located on one side, far away from the center of the main control board, of the key board;
the rear end 220V input port, the test winding port connected with the zero-sequence current transformer, the test key, the indicator lamp or the multifunctional key are connected with the main controller through the contact pin and the butt socket.
5. The electrical leakage breaker circuit board structure as claimed in claim 1, wherein the main control board further comprises: a short circuit detection interface;
the short circuit detection interface is arranged on the front face of the main control board and is connected with the main control board.
6. The circuit board structure of claim 1, wherein the main control board further comprises a current collecting interface and a leakage current collecting interface disposed on the front surface of the main control board, and the current collecting interface and the leakage current collecting interface are electrically connected to the main controller.
7. The circuit board structure of an electrical leakage breaker as claimed in claim 1, wherein the main control board comprises a power supply interface area disposed at a lower side of the main body portion, the power supply interface area is provided with an external power supply interface, the main control board is provided with a dc voltage reduction circuit, an input end of the dc voltage reduction circuit of the external power supply interface is connected, and an output end of the dc voltage reduction circuit is connected with the main controller.
8. A circuit board structure of a residual current circuit breaker according to any one of claims 1 to 7, characterized in that said master controller is a single chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020973973.4U CN211879320U (en) | 2020-06-01 | 2020-06-01 | Circuit board structure of residual current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020973973.4U CN211879320U (en) | 2020-06-01 | 2020-06-01 | Circuit board structure of residual current circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211879320U true CN211879320U (en) | 2020-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020973973.4U Active CN211879320U (en) | 2020-06-01 | 2020-06-01 | Circuit board structure of residual current circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211879320U (en) |
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2020
- 2020-06-01 CN CN202020973973.4U patent/CN211879320U/en active Active
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