Wireless intelligent anti-adhesion key switch
By introducing arc extinguishing circuits into the intelligent wireless switch panel, the adhesion problem of relays in high current applications is solved, and the reliability and efficiency of the product are improved.
Patent Information
- Application Number
- CN202421378720.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-06-17
AI Technical Summary
Smart switch panel relays are prone to sticking problems when applying high currents of inductive and capacitive loads, resulting in untimely closing and disconnection, affecting product reliability and efficiency.
The arc extinguishing circuit is introduced into the intelligent wireless switch panel, and the resistor and capacitor are connected in series and parallel between the relay and the mains neutral wire. The capacitor is used to absorb the arc energy generated during the moment of disconnection of the relay, reducing the temperature to prevent the contact from melting.
Effectively prevent relay contacts from sticking, improve product reliability and load capacity, and enhance product safety and utilization efficiency.
Smart Images
Figure CN223167406U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of key switch panels, and particularly relates to a wireless intelligent anti-sticking key switch. Background Art
[0002] Intelligent wireless switch panels are mainly applied to hotels, guesthouses or intelligent houses. The switch is used to supply power to the rear-end devices and send commands. With the continuous development of technology, intelligent switch panels have gradually evolved from wired products to today's wireless communication products. The wired method mainly uses RS485 and CAN buses to interact with the cloud platform through a gateway. The wireless method mainly uses local networking such as Zigbee and Bluetooth Mesh to interact with the cloud platform through a gateway. The intelligent wireless switch panel itself receives commands and controls devices such as TVs and curtains in the entire room through wireless zigbee communication, and uploads data such as control methods to the guest control system. The guest control system can also execute the status of guest room devices.
[0003] However, in the intelligent guest room system, due to the limited installation space of the guest control product, there are limitations on the volume requirements and device selection of the product. Therefore, in guest rooms with relatively large power consumption, it is often impossible to select a relay with a large current-carrying capacity to supply power to the subsequent circuit. Moreover, due to the limited installation space of the guest control product, there are limitations on the volume requirements and device selection of the product. Therefore, in guest rooms with relatively large power consumption, it is often impossible to select a relay with a large current-carrying capacity to supply power to the subsequent circuit. In the intelligent switch panel product, due to the large current application of the subsequent inductive and capacitive loads, there is a problem of relay adhesion in the application process of the intelligent switch product. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a wireless intelligent anti-sticking key switch to solve the problem of relay adhesion in the application process of intelligent switch panel products due to the large current application of subsequent inductive and capacitive loads.
[0005] To achieve the above purpose, the utility model provides the following technical solution: A wireless intelligent anti-sticking key switch includes a main board and a power board. The power board is provided at the rear side of the main board. An arc extinguishing circuit is provided on the power board. The arc extinguishing circuit includes: at least two relays, each relay having four pins, namely L, L1, V, and C; the arc extinguishing circuit is a resistor and a capacitor connected in series and then connected in parallel between L1 of the relay and the neutral line N of the commercial power; where C is connected to the main board and controlled by the control unit MCU, V is connected to the relay power supply, and L and L1 are connected in series and inserted into the live wire of the commercial power of 220V; the key switch is powered by 220V commercial power, the relay is powered by the internal power supply module of the switch, and the output of the controller unit MCU receives commands through the key to control the relay output.
[0006] Further, the control inputs of the relays RL1, RL2, RL3, and RL4 are respectively connected to four output pins of the controller unit MCU. The output end of the relay RL1 is connected to the load, the output end of the relay RL2 is connected to the load C2, the output end of the relay RL3 is connected to the load B1, the output end of the relay RL4 is connected to the load N1, and the common ends of the relays RL1, RL2, RL3, and RL4 are all connected to the mains live wire L.
[0007] Further, a baffle is provided on the front side of the main board, and a bottom case is provided outside the power board.
[0008] Further, an upper cover is provided on the front side of the baffle, and buckles are provided at the corresponding positions of the outer wall of the baffle and the bottom case.
[0009] Further, screw holes are provided at the corresponding positions of the power board and the bottom case.
[0010] In the above technical solution, the technical effects and advantages provided by the present utility model are as follows:
[0011] 1. By adding an arc extinguishing circuit on the basis of the original intelligent wireless switch panel, the present utility model can effectively absorb the arc generated instantaneously when the relay is switched on and off, prevent the high temperature of the arc from causing the melting and adhesion of the relay contacts, provide a more reliable load-carrying capacity for the entire product, facilitate the use of various electrical appliances in hotels, and also improve the safety and reliability of the product to a higher level.
[0012] 2. By setting the arc extinguishing circuit, the present utility model solves the problem that the relay is prone to untimely closing and opening when carrying inductive loads, thereby greatly improving the utilization efficiency of the product, the reliability of the product, and providing diversity in the selection of customer loads. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is the schematic diagram of the arc extinguishing circuit principle of the present utility model;
[0014] Figure 2 is the schematic diagram of the three-dimensional structure of the first perspective of the present utility model;
[0015] Figure 3 is the front view structure schematic diagram of the baffle of the present utility model;
[0016] Figure 4 is the front view structure schematic diagram of the power board of the present utility model;
[0017] Figure 5 is the front view structure schematic diagram of the bottom case of the present utility model;
[0018] Figure 6 is the connection structure schematic diagram of the baffle and the bottom case of the present utility model;
[0019] Figure 7 This is the second perspective three-dimensional structure schematic diagram of the present utility model.
[0020] In the figure: 1, main board; 2, power supply board; 3, arc extinguishing circuit; 4, baffle; 5, bottom case; 6, upper cover; 7, buckle; 8, screw hole. Specific embodiments
[0021] The following specific embodiments illustrate the implementation manners of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0022] The present utility model provides as Figures 1 to 7 shown, a wireless intelligent anti-sticking push-button switch, including a main board 1 and a power supply board 2. The power supply board 2 is provided at the rear side of the main board 1. An arc extinguishing circuit 3 is provided on the power supply board 2. The arc extinguishing circuit 3 includes: at least two relays, each relay having four pins, namely L, L1, V, and C; the arc extinguishing circuit 3 is that a resistor and a capacitor are connected in series and then connected in parallel between the relay L1 and the mains zero line N; wherein C is connected to the main board 1 and is controlled by the control unit MCU, V is connected to the relay power supply, and L and L1 are connected in series and inserted into the live wire of the mains 220V; the push-button switch is powered by the mains 220V, the relay is powered by the internal power supply module of the switch, and the output of the controller unit MCU receives an instruction through the button to control the relay output;
[0023] The operation is as follows. Press the corresponding button according to the user's needs. After the switch panel receives the signal, the corresponding relay will be turned on. At this time, the alternating current of this circuit is connected, so that the electrical appliances connected to this line work. The controller unit MCU controls the switch states of four relays RL1, RL2, RL3, and RL4 through three output pins, so as to control the on and off of loads, C2, B1, and N1. When the controller unit MCU outputs a low level to the corresponding output pin, the corresponding relay closes and the load is connected; when the controller unit MCU outputs a high level, the corresponding relay opens and the load is cut off. The arc extinguishing circuit 3 connected in series at the relay contact of the switch uses capacitor charging to absorb the arc energy, stores the energy at the moment of startup in the capacitor, and then consumes the energy stored inside the capacitor by the resistor's energy consumption, which can effectively reduce the arc energy and lower the temperature, thereby reducing the possibility of the relay contacts melting and sticking. This utility model adds the arc extinguishing circuit 3 on the basis of the original intelligent wireless switch panel, which can effectively absorb the arc generated at the moment when the relay is switched on and off, prevent the high temperature of the arc from causing the relay contacts to melt and stick, provide a more reliable load-carrying capacity for the whole product, facilitate the use of various electrical appliances in hotels, and also improve the safety and reliability of the product to a higher level;
[0024] As Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7 shown, the control inputs of relays RL1, RL2, RL3, and RL4 are respectively connected to the four output pins of the controller unit MCU. The output end of relay RL1 is connected to the load, the output end of relay RL2 is connected to load C2, the output end of relay RL3 is connected to load B1, the output end of relay RL4 is connected to load N1. The common ends of relays RL1, RL2, RL3, and RL4 are all connected to the municipal live wire L. There is a baffle 4 on the front side of the main board 1, a bottom case 5 outside the power board 2, an upper cover 6 on the front side of the baffle 4, a buckle 7 at the corresponding position of the outer wall of the baffle 4 and the bottom case 5, and screw holes 8 are opened at the corresponding positions of the power board 2 and the bottom case 5;
[0025] The specific operation is as follows. When installing the switch, the main board 1 of the switch is fixed on the baffle 4 by screws, and the power board 2 is also fixed inside the bottom case 5 with three screws. At this time, the baffle 4 and the main board 1 are regarded as a whole and are buckled with the bottom case 5 through two buckles 7 respectively above and below the baffle 4. At this time, the main board 1 and the power board 2 are connected through the pin sockets on the circuit board and then fixed on the bottom case 5 with screws. The three upper covers 6 are also integrally installed in the installation box on the hotel wall by being installed on the baffle 4. There is a power supply line passing through the installation box, and the power supply line is connected to the power board 2 through the inside of the installation box. This utility model solves the problem that the relay is prone to untimely closing and opening when driving inductive loads by setting the arc extinguishing circuit 3, thereby greatly improving the utilization efficiency of the product, the reliability of the product, and providing diversity for the selection of customer loads.
[0026] The working principle of this utility model:
[0027] Refer to the attached instruction Figures 1 to 7 , when using this utility model, press the corresponding button according to the user's needs. After the switch panel receives the signal, the corresponding relay will be turned on accordingly. At this time, the alternating current of this circuit is connected, and the electrical appliance connected to this circuit will work. The controller unit MCU controls the switch states of the four relays RL1, RL2, RL3, and RL4 through three output pins, thereby controlling the on and off of the loads C2, B1, and N1. When the controller unit MCU outputs a low level to the corresponding output pin, the corresponding relay closes and the load is connected; when the controller unit MCU outputs a high level, the corresponding relay opens and the load is cut off. The arc extinguishing circuit 3 connected in series at the relay contacts of the switch uses the charging of the capacitor to absorb the arc energy, stores the energy at the moment of startup in the capacitor, and then consumes the energy stored inside the capacitor by the energy consumption of the resistor, which can effectively reduce the arc energy and lower the temperature, thereby reducing the possibility of the relay contacts melting and sticking. When installing the switch, the main board 1 of the switch is fixed on the baffle 4 by screws, and the power board 2 is also fixed inside the bottom case 5 with three screws. At this time, the baffle 4 and the main board 1 are regarded as a whole and are buckled with the bottom case 5 through two buckles 7 respectively above and below the baffle 4. At this time, the main board 1 and the power board 2 are connected through the pin sockets on the circuit board and then fixed on the bottom case 5 with screws. The three upper covers 6 are also integrally installed in the installation box on the hotel wall by being installed on the baffle 4. There is a power supply line passing through the installation box, and the power supply line is connected to the power board 2 through the inside of the installation box. The above is the working principle.
Claims
1. A wireless intelligent anti-sticking key switch, comprising a main board (1) and a power board (2), wherein the power board (2) is arranged at the rear side of the main board (1), and is characterized in that: An arc extinguishing circuit (3) is provided on the power supply board (2). The arc extinguishing circuit (3) includes: at least two relays, each relay having four pins, namely L, L1, V, and C; the arc extinguishing circuit (3) is a resistor and a capacitor connected in series and then connected in parallel between the relay L1 and the mains zero line N; where C is connected to the main board (1) and is controlled by the control unit MCU, V is connected to the relay power supply, and L and L1 are connected in series to the live wire of the mains 220V; the push-button switch is powered by the mains 220V, the relay is powered by the internal power supply module of the switch, and the output of the controller unit MCU receives an instruction through the push-button to control the relay output.
2. The wireless intelligent anti-sticking key switch according to claim 1, characterized in that: The control inputs of the relays RL1, RL2, RL3, and RL4 are respectively connected to the four output pins of the controller unit MCU. The output terminal of the relay RL1 is connected to the load, the output terminal of the relay RL2 is connected to the load C2, the output terminal of the relay RL3 is connected to the load B1, the output terminal of the relay RL4 is connected to the load N1, and the common terminals of the relays RL1, RL2, RL3, and RL4 are all connected to the mains live wire L.
3. The wireless intelligent anti-sticking push-button switch according to claim 1, wherein: A baffle (4) is provided on the front side of the main board (1), and a bottom case (5) is provided outside the power supply board (2).
4. The wireless intelligent anti-sticking key switch according to claim 3, wherein: An upper cover (6) is provided on the front side of the baffle (4), and a buckle (7) is provided at the corresponding position of the outer wall of the baffle (4) and the bottom case (5).
5. The wireless intelligent anti-sticking key switch according to claim 4, characterized in that: A screw hole (8) is provided at the corresponding position of the power supply board (2) and the bottom case (5).