A socket or switch box combined with a metering element and a metering display module

Abstract

A socket or switch box combined with a metering element and a metering display module is a mobile socket with multiple plug sockets and a fixed socket without plugs, a switch box, a metering element and a metering display module. When the power supply is normal, the power consumption and status of the electrical equipment are monitored and recorded, so that people can visualize the power consumption at the load end when using electrical appliances to avoid power accidents.

Description

Technical Field

[0001] The invention relates to a mobile socket with multiple plug holes and a fixed socket without plugs and a switch box, which are widely used in providing power for electrical equipment. Background Art

[0002] At present, mobile sockets with multiple plugs and fixed sockets and switch boxes without plugs that provide power to electrical equipment do not monitor and record the power consumption and status of electrical equipment during normal power supply. People cannot know the power consumption parameters of the loads behind the above sockets and switch boxes, and the power consumption status cannot be visualized. Summary of the invention

[0003] Based on this, it is necessary to provide a socket and switch box with visualized power parameters. When people connect electrical equipment to the socket or turn on the button switch on the switch box, they can clearly see the power parameters of the electrical equipment through the socket and switch box to determine whether the load of the socket and switch box is overloaded to avoid accidents. A socket or switch box combined with a metering element and a metering display module, the main components include a plug cable, a cover plate, a live wire row, a neutral wire row, a ground wire row, a bracket, a safety door, a back cover, a metering display module, a metering element, a connecting line 1, a connecting line 2, a bottom box, and a switch box; its main function is to combine the functions of the socket, the metering element, and the metering display module to measure and display the power parameters, or to combine the functions of the switch box, the metering element, and the metering display module to measure and display the power parameters.

[0004] In one of the embodiments, the cover plate is provided with the component features of a bayonet, a jack, a button hole, an indicator light hole, a wire inlet hole, and a metering element seat; the back cover is provided with the component feature of a wire inlet hole, the position of the bayonet is greater than 1mm away from the closest position of the cover plate or the back cover wire inlet hole, and the length and width are 10mm*6mm larger, and are used to install and fix the metering display module; the metering element seat matches the outer contour of the metering element, and is used to fix the metering element.

[0005] In one of the embodiments, the metering display module is provided with power supply terminal 1, power supply terminal 2, metering terminal 1, metering terminal 2, housing, display device, stopper, or boss on the outside. The power supply terminal 1 and the power supply terminal 2 are the power input terminals of the metering display module and are also the voltage sampling input terminals; the metering terminal 1 and the metering terminal 2 are the current sampling circuit input terminals of the display module; the display device of the metering display module is used to display the monitoring data of voltage, current, power, and electric energy when the circuit is working normally; when the metering element is placed inside the metering module, the metering terminal 1 and the metering terminal 2 are arranged inside the metering display module circuit board, and do not need to be arranged outside the metering display module, and the power supply terminal 1, the power supply terminal 2, the output terminal 1, and the output terminal 2 are arranged outside. In one embodiment, the metering element is provided with a secondary lead 1 and a secondary lead 2, which are placed outside the metering display module. The secondary lead 1 and the secondary lead 2 are respectively connected to the metering terminal 1 and the metering terminal 2 of the metering display module to form a current sampling input circuit; the connecting wire 1 or the connecting wire 2 of the main power supply circuit passes through the primary busbar hole of the metering element to form a primary circuit, and the outer contour of the metering element is circular or square. When the metering element is placed in the metering display module, the part features of the panel metering element seat do not need to be set, and the secondary lead 1 and the secondary lead 2 are connected to the circuit board circuit inside the metering display module.

[0006] In one of the embodiments, the outer shell size of the metering display module is larger than the size of the cover plate bayonet; the metering display module is provided with a part feature of a stop, which is inserted into the part feature of the bayonet provided on the cover plate and installed in a fit therewith, so that the display element of the metering display module can be flush with the cover plate, making it convenient to view the numbers on the display device without blind spots. This installation of the metering display module on the cover plate is a flush installation structure.

[0007] In one embodiment, the shell of the metering display module has a variant structure, and the shell variant structure is provided with a part feature of a boss, the size of the boss is larger than the size of the cover plate snap-in, and other parts of the metering display module shell are smaller than the size of the cover plate snap-in. The metering display module shell partially passes through the cover plate snap-in, and the boss is close to the cover plate and installed in fit with it. The boss of the metering display module is protrudingly installed on the cover plate. This installation of the metering display module on the cover plate is a protruding installation structure.

[0008] In one embodiment, the socket has a variant structure with a bottom box, constituting a socket with a bottom box, and the socket with a bottom box mainly includes the parts features of a cover plate, a bottom box, a live wire row, a neutral wire row, a ground wire row, a safety door, and a bracket; In one of the embodiments, the cover plate of the socket with a bottom box is provided with the component features of a bayonet, a jack, a metering element seat, and a button hole; the bottom box is provided with the component features of an input hole and an output hole; the cover plate of the socket with a bottom box can be installed with the metering display module in the flush mounting structure, and can also be installed with the metering display module housing variant structure in the protruding mounting structure.

[0009] In one embodiment, the switch box mainly includes the parts features of a cover plate, a bottom box, and a switch button. The cover plate is mainly provided with the parts features of a bayonet, a metering element seat, and a button hole; the bottom box is provided with the parts features of an input hole and an output hole; the switch box and the metering display module can be installed in the flush installation manner, and can also be installed in the protruding installation manner with the variant structure of the metering display module shell.

[0010] The present invention provides a socket or switch box combined with a metering element and a metering display module, comprising a socket combined with a metering element and a metering display module and a switch box combined with a metering element and a metering display module. The socket also has a variant structure, i.e., a socket with a bottom box. Therefore, this specification mainly describes three parts: a socket combined with a metering element and a metering display module and its variant structure, and a switch box combined with a metering element and a metering display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 Outline drawing Figure 2 The schematic diagram of the cover structure Figure 3 This is the internal structure diagram of the socket; Figure 4 Installation diagram for metering elements Figure 5 This is the flush installation structure diagram of the metering display module Figure 6 This is the prominent installation structure diagram of the metering display module Figure 7 Schematic diagram of the internal structure of the metering display module Figure 8 Schematic diagram of electrical connection between metering element and metering display module Fig. 9 Cross-sectional view and front view of the bottom box of the socket with bottom box Fig.10 The flush installation structure and protruding installation structure diagram of the bottom box socket and the metering display module Fig.11 This is the internal and front view of the switch box bottom box. Fig.12Flush installation structure and protruding installation structure diagram of switch box and metering display module Fig.13 Electrical connection diagram when the metering element is placed inside the metering display module See the table below for the accompanying drawings. Numbers with decimal points are the features of the parts represented by the number before the decimal point. Multiple numbers stacked together indicate that the numbered components or features have a matching relationship.

[0012] DETAILED DESCRIPTION

[0013] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0014] It should be noted that when an element is referred to as "fixing" another element, it can be directly on the other element or there can also be a centered element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a centered element at the same time. The terms "front", "back", "inside", "outside", "left", "right", "up", "down", "middle", "bottom", "straight line", "linear", "horizontal", "vertical", "clockwise", "counterclockwise", "high", "low", "large", "small", "coincidence", "midpoint", "center", "equal", "center", "interference fit", "transition fit" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation method. For the convenience of description, the direction is determined by facing the front of the structure position shown in the column diagram, that is, the left side of the figure is left, the right side of the figure is right, the top of the figure is top (high), and the figure is bottom (bottom); the rotation direction of the illustrated structure is determined by facing the front of the illustrated structure to determine counterclockwise or clockwise. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific implementation methods and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items. The embodiments listed in the present invention can be implemented in various other ways, and various omissions, substitutions, changes, and superpositions can be made without departing from the scope of the invention. These embodiments and their variations are included in the scope and spirit of the present invention, and are also included in the invention described in the claims and their equivalents.

[0015] See also Figure 1, Figure 2 , Figure 3 .

[0016] A socket combined with a metering element and a metering display module, having a multi-position jack 20.2, capable of plugging more than two plugs at the same time, and a movable socket, which mainly includes a plug cable, a cover plate, a live wire row, a neutral wire row, a ground wire row, a bracket, a safety door, a back cover, a metering display module, a metering element, a connecting wire 1, a connecting wire 2, and a bottom box. After the socket is plugged into a power source, a display device 40.6 will display the power consumption parameters of the socket, including but not limited to power supply voltage, current, power, electric energy, etc., and the cover plate 20 is provided with a bayonet 20.1 and a metering element seat 20.6. The length and width of the bayonet 20.1 are greater than 10mm*6mm, and the position of the bayonet 20.1 is greater than 1mm from the cover plate wire inlet hole 20.5 or the back cover wire inlet hole 20.5. The function of the bayonet 20.1 is to fix the metering display module 40. The metering element seat 20.6 provided on the cover plate 20 is semicircular in shape, matches the outer contour of the metering element 50, wraps the metering element 50, and is used to fix the metering element 50 on the cover plate 20. The outer contour of the metering element is not limited to a circle. When the outer contour of the metering element 50 is a square, the metering element seat 20.6 is matched to be a square. The metering element seat 20.6 is placed flat on the edge of the bayonet 20.1.

[0017] See also Figure 4 , the metering element 50 is in the exploded position diagram, the metering element can be placed flat against the metering display module 40 and placed in the metering element seat 20.6. When the metering element is built into the metering display module, the metering element seat 20.6 is not required to be provided on the cover plate 20, and the metering element is placed in the metering display module, which means that the metering element 50 is a part of the metering display module, and the two are fixedly connected together and cannot be normally disassembled.

[0018] See also Figure 5 , Figure 6 .

[0019] The metering display module housing 40.5 is provided with a part feature of a stopper 40.7. The size of the metering display module housing 40.5 is larger than the cover plate bayonet 20.1, but it can pass through the cover plate bayonet 20.1 through the metering display module stopper 40.7 and fit into the bayonet 20.1, so that the metering display module display element 40.6 and the cover plate 20 are flush, which is convenient for viewing the numbers on the display device 40.6 without blind spots. This installation of the metering display module 40 on the cover plate 20 is a flush installation structure.

[0020] The metering display module housing 40.5 has a variant structure, and the part features of the opened stop 40.7 are changed to the part features of the boss 40.8 ( Figure 6). The size of the boss 40.8 is larger than the size of the bayonet 20.1, and the other parts of the metering display module housing 40.5 are smaller than the size of the cover bayonet 20.1. The metering display module housing 40.5 partially passes through the cover bayonet 20.1. The metering display module boss 40.8 is close to the cover 20 and is installed in close contact with it. The metering display module boss is installed on the cover 20 in a protruding manner. This installation of the metering display module 40 on the cover 20 is a protruding installation structure.

[0021] See also Figure 7 , Figure 8 , Fig.13 .

[0022] The metering display module mainly consists of a sampling circuit, a metering conversion circuit, a main control unit, and a display device. The main control unit includes a metering chip, an electric energy chip, a display driver chip, a storage element, etc. The current sampling circuit is usually implemented through a manganese copper shunt or a current transformer. The metering element in this manual is described as a current transformer. The current transformer converts the large current on the primary side into a small current on the secondary side and inputs the current sampling circuit. The installation position of the current transformer can be placed inside the metering display module or outside the metering display module.

[0023] The voltage sampling circuit usually converts the high voltage into a suitable low voltage by connecting a series resistor divider or a voltage transformer in the circuit, and inputs it into the voltage sampling circuit. This manual adopts a series resistor divider and an input voltage sampling circuit. The metering conversion circuit converts the analog signal of the sampling circuit into a digital signal and inputs it into the main control unit. The metering chip, power chip, and storage element of the main control unit combine the industrial standard indicator data through program algorithms to calculate the current, voltage, power, electric energy and other power parameters, and then output them to the display device through the display driver chip for display. The metering element 50 is placed outside the metering display module 40. The specific connection circuit parameters Figure 3 , Figure 8 . A set of phase lines 10.2 and neutral lines 10.3 of the AC power supply are connected to the electrical equipment, and a main circuit conductor of the power supply of the electrical equipment passes through the primary busbar hole 50.3 of the metering element, which is shown as the connecting line 27. The power supply terminal 1 40.1 of the metering display module is connected with the phase line 10.2 and the connecting line 1 26, and the connecting line 1 26 is connected to the live wire row 22; the power supply terminal 2 40.2 of the metering display module is connected with the neutral line 10.3 and the connecting line 2 27 to form a voltage sampling circuit input circuit. The secondary side lead 1 50.1 of the metering element is connected to the metering terminal 1 40.3 of the metering display module, the secondary side lead 2 50.2 of the metering element is connected to the metering terminal 2 40.4 of the metering display module, and the connecting line 2 27 passes through the primary side busbar hole 50.3 of the metering element to form a current sampling input circuit.

[0024] When the metering element 50 is placed inside the metering display module 40, please refer to Fig.13 , the power supply terminal 1 40.1 of the metering display module is connected with the phase line 10.2 and the connecting line 1 26; the power supply terminal 2 40.2 of the metering display module is connected with the neutral line 10.3 and the connecting line 27 to form the voltage sampling circuit input circuit, and the connecting line 27 passes through the primary side bus hole 50.3 of the metering element and is connected to the output terminal 2 40.A of the metering module as the primary side main circuit loop of the current sampling circuit. At the same time, one end of the connecting line 27 passing through the primary side bus hole 50.3 of the metering element and the output terminal 2 40.A is connected to the neutral line row 21 as the input end of the load end power supply, and the connecting line 1 26 is connected to the live line row 22 as the other input end of the load power supply; When the plug 10.1 of the plug cable 10 is inserted into the power supply and the plug of the electrical device is inserted into the socket 20, the voltage sampling circuit of the metering display module 40 has an input voltage signal, and the current sampling circuit inputs a current signal through the metering element 50. The metering conversion circuit converts the sampled voltage and current signals from analog signals to digital signals, and transmits them to the metering chip and the electric energy chip. After the program algorithm, standard electric quantity data is obtained, and then transmitted to the display letter 40.6 through the display driver chip to display the power parameter data.

[0025] See also Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.13 .

[0026] A variant structure of a socket combined with a metering element and a metering display module is a socket with a bottom box fixedly installed in a wall hole, such as Fig. 9 , with a bottom box socket, no more than 3 plugs can be plugged in at the same time, and the installation position is fixed and cannot be moved. After the socket is connected to the power supply, the display device 40.6 will display the power parameters of the socket, including but not limited to the power supply voltage, current, power, electric energy, etc. The cover plate 20 is provided with the parts features of the bayonet 20.1 and the metering element seat 20.6. The length and width of the bayonet 20.1 are greater than 10mm*6mm, and the position of the bayonet 20.1 is greater than 1mm from the position closest to the bottom box inlet hole 31.1. The function of the bayonet 20.1 is to fix the metering display module 40. The metering element seat 20.6 set on the cover plate 20 is semicircular, matching the outer contour of the metering element 50, wrapping the metering element 50, and fixing the metering element 50 on the cover plate 20. The outer contour of the metering element is not limited to a circle. When the outer contour of the metering element 50 is a square, the metering element seat 20.6 is matched to a square. The metering element seat 20.6 is placed flat on the edge of the bayonet 20.1. The metering element 50 can be placed flat against the metering display module 40 and placed in the metering element seat 20.6.

[0027] The metering display module housing 40.5 is provided with a part feature of a stopper 40.7. The size of the metering display module housing 40.5 is larger than the cover plate bayonet 20.1, but it can pass through the cover plate bayonet 20.1 through the metering display module stopper 40.7 and fit into the bayonet 20.1, so that the metering display module display element 40.6 and the cover plate 20 are flush, which is convenient for viewing the numbers on the display device 40.6 without blind spots. This installation of the metering display module 40 on the cover plate 20 is a flush installation structure.

[0028] The metering display module housing 40.5 has a variant structure, and the part features of the stopper 40.7 are changed to the part features of the boss 40.8. The size of the boss 40.8 is larger than the size of the bayonet 20.1, and the other parts of the metering display module housing 40.5 are smaller than the size of the cover bayonet 20.1. The metering display module housing 40.5 partially passes through the cover bayonet 20.1, and the metering display module boss 40.8 is close to the cover 20 and is installed in a fit therewith. The metering display module boss is installed protrudingly on the cover 20. This installation of the metering display module 40 on the cover 20 is a protruding installation structure.

[0029] A phase line 10.2 and a neutral line 10.3 of the AC power supply are connected to the bottom box through the inlet hole 31.1, and the busbar hole 50.3 of the primary side of the metering element passes through the connecting line 27. The power supply terminal 1 40.1 of the metering display module is connected with the phase line 10.2 and the connecting line 1 26, and the connecting line 1 26 is connected to the live wire row 22; the power supply terminal 2 40.2 of the metering display module is connected with the neutral line 10.3 and the connecting line 2 27 to form a voltage sampling circuit input circuit. The secondary side lead 1 50.1 of the metering element is connected with the metering terminal 1 40.3 of the metering display module, the secondary side lead 2 50.2 of the metering element is connected with the metering terminal 2 40.4 of the metering display module, and the connecting line 2 27 passes through the busbar hole 50.3 of the primary side of the metering element to form a current sampling input circuit.

[0030] When the metering element 50 is placed inside the metering display module 40, please refer to Fig.13 , the power supply terminal 1 40.1 of the metering display module is connected with the phase line 10.2 and the connecting line 1 26; the power supply terminal 2 40.2 of the metering display module is connected with the neutral line 10.3 and the connecting line 27 to form the voltage sampling circuit input circuit, and the connecting line 27 passes through the primary side bus hole 50.3 of the metering element and is connected to the output terminal 2 40.A of the metering module as the primary side main circuit loop of the current sampling circuit. At the same time, one end of the connecting line 27 passing through the primary side bus hole 50.3 of the metering element and the output terminal 2 40.A is connected to the neutral line row 21 as the input end of the load end power supply, and the connecting line 1 26 is connected to the live line row 22 as the other input end of the load power supply; When a set of phase lines 10.2 and neutral lines 10.3 are connected to the power supply, the voltage sampling circuit of the metering display module 40 receives an input voltage signal, and the current sampling circuit receives an input current signal through the metering element 50. The metering conversion circuit converts the sampled voltage and current signals from analog signals into digital signals, and transmits them to the metering chip and the electric energy chip. After the program algorithm, standard electric quantity data is obtained, and then transmitted to the display letter 40.6 through the display driver chip to display the electric quantity parameter data.

[0031] See also Fig.11 , Fig.12 , Fig.13 .

[0032] A switch box combined with a metering element and a metering display module, the accessories mainly include a cover plate, a bottom box, a button, a metering display module, a metering element, a phase line, a neutral line, and a connecting line. The installation position of the switch box is fixed and cannot be moved. A set of phase lines 10.2 and a neutral line 10.3 are connected to the power supply, and the display device 40.6 will display the power parameters of the load carried by the switch box, including but not limited to the power supply voltage, current, power, electric energy, etc. The cover plate 20 is provided with a bayonet 20.1 and a metering element seat 20.6 part feature, the length and width of the bayonet 20.1 are greater than 10mm*6mm, and the position of the bayonet 20.1 is greater than 1mm from the nearest position of the bottom box inlet hole 31.1. The function of the bayonet 20.1 is to fix the metering display module 40. The metering element seat 20.6 set on the cover plate 20 is semicircular, matches the outer contour of the metering element 50, wraps the metering element 50, and is used to fix the metering element 50 on the cover plate 20. The metering element profile is not limited to a circle. When the metering element 50 has a square profile, the metering element seat 20.6 is also square. The metering element seat 20.6 is placed flat on the edge of the bayonet 20.1. The metering element 50 can be placed flat against the metering display module 40 in the metering element seat 20.6.

[0033] The metering display module housing 40.5 is provided with a part feature of a stopper 40.7. The size of the metering display module housing 40.5 is larger than the cover plate bayonet 20.1, but it can pass through the cover plate bayonet 20.1 through the metering display module stopper 40.7 and fit into the bayonet 20.1, so that the metering display module display element 40.6 and the cover plate 20 are flush, which is convenient for viewing the numbers on the display device 40.6 without blind spots. This installation of the metering display module 40 on the cover plate 20 is a flush installation structure.

[0034] The metering display module housing 40.5 has a variant structure, and the part features of the stopper 40.7 are changed to the part features of the boss 40.8. The size of the boss 40.8 is larger than the size of the bayonet 20.1, and the other parts of the metering display module housing 40.5 are smaller than the size of the cover bayonet 20.1. The metering display module housing 40.5 partially passes through the cover bayonet 20.1, and the metering display module boss 40.8 is close to the cover 20 and is installed in a fit therewith. The metering display module boss is installed protrudingly on the cover 20. This installation of the metering display module 40 on the cover 20 is a protruding installation structure.

[0035] A set of phase line 10.2 and neutral line 10.3 of the AC power supply are connected to the bottom box through the line entry hole 31.1, the primary busbar hole 50.3 of the metering element, and pass through the connecting line 27. The power supply terminal 1 40.1 of the metering display module is connected to the phase line 10.2 after the button 28 is turned on; the power supply terminal 2 40.2 of the metering display module is connected to the neutral line 10.3 and the connecting line 2 27 to form a voltage sampling circuit input circuit. The secondary side lead 1 50.1 of the metering element is connected to the metering terminal 1 40.3 of the metering display module, the secondary side lead 2 50.2 of the metering element is connected to the metering terminal 2 40.4 of the metering display module, and the other end of the connecting line 2 27 passes through the primary busbar hole 50.3 of the metering element to form a current sampling input circuit.

[0036] When the metering element 50 is placed inside the metering display module, Fig.13 One end of the connecting line 27 passing through the primary busbar hole 50.3 of the metering element is connected to the output terminal 40.A as the input terminal of the load-end power supply, and the phase line 10.2 after the button 28 is switched is used as the other input terminal of the load-end power supply.

[0037] When a set of phase lines 10.2 and neutral lines 10.3 are connected to the power supply, the voltage sampling circuit of the metering display module 40 receives an input voltage signal, and the current sampling circuit receives an input current signal through the metering element 50. The metering conversion circuit converts the sampled voltage and current signals from analog signals into digital signals, and transmits them to the metering chip and the electric energy chip. After the program algorithm, standard electric quantity data is obtained, and then transmitted to the display letter 40.6 through the display driver chip to display the electric quantity parameter data.

[0038] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. The above embodiments only express several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, without departing from the concept principle and idea of ​​the present invention, several variations and improvements can be made, which all belong to the scope of protection of the present invention and are covered by the claims of the patent of the present invention.

Claims

1. A socket or switch box combined with a metering element and a metering display module, characterized in that The main components include plug cable, cover plate, live wire row, neutral wire row, ground wire row, bracket, safety door, back cover, metering display module, metering element, connecting wire 1, connecting wire 2, bottom box, button and switch box; its main function is to combine the functions of the socket, metering element and metering display module to measure and display the electricity parameters, or to combine the functions of the switch box, metering element and metering display module to measure and display the electricity parameters.

2. A socket or switch box combined with a metering element and a metering display module, characterized in that: The cover plate is provided with the parts features of a bayonet, a jack, a button hole, an indicator light hole, a wire inlet hole, and a metering element seat; the position of the bayonet is greater than 1mm from the nearest position of the cover plate or the wire inlet hole of the back cover, and the length and width are 10mm*6mm larger, and are used to install and fix the metering display module; the metering element seat matches the outer contour of the metering element and is used to fix the metering element.

3. A socket or switch box combined with a metering element and a metering display module, characterized in that: The metering display module is provided with power supply terminal 1, power supply terminal 2, metering terminal 1, metering terminal 2, shell, display device, stopper, and shell variant structure with part features of bosses on the outside. The power supply terminal 1 and the power supply terminal 2 are the power input terminals of the metering display module, and are also the voltage sampling input terminals; the metering terminal 1 and the metering terminal 2 are the current sampling circuit input terminals of the display module; the display device of the metering display module is used to display the monitoring data of voltage, current, power and electric energy when the circuit is working normally; when the metering element is placed inside the metering module, the metering terminal 1 and the metering terminal 2 are arranged inside the metering display module circuit board, and do not need to be arranged outside the metering display module, and the power supply terminal 1, the power supply terminal 2, the output terminal 1 and the output terminal 2 are arranged outside.

4. A socket or switch box combined with a metering element and a metering display module, characterized in that: The metering element is provided with a secondary side lead 1 and a secondary side lead 2, which are placed outside the metering display module. The secondary side lead 1 and the secondary side lead 2 are respectively connected to the metering terminal 1 and the metering terminal 2 of the metering display module to form a current sampling input circuit; the connecting wire 1 or the connecting wire 2 of the main power supply circuit passes through the primary side busbar hole of the metering element to form a primary side circuit, and the outer contour of the metering element is circular or square; when the metering element is placed in the metering display module, the part features of the metering element seat of the cover plate do not need to be set, and the secondary side lead 1 and the secondary side lead 2 are connected to the circuit board circuit inside the metering display module to serve as the input circuit of the current sampling circuit.

5. A socket or switch box combined with a metering element and a metering display module, characterized in that: The shell size of the metering display module is larger than the size of the cover plate bayonet; the metering display module is provided with a part feature of a stop, which is inserted into the part feature of the bayonet provided on the cover plate and installed in a fit therewith, so that the display element of the metering display module can be flush with the cover plate, making it convenient to view the numbers on the display device without blind spots. This installation of the metering display module on the cover plate is a flush installation structure.

6. A socket or switch box combined with a metering element and a metering display module, characterized in that: The shell of the metering display module has a variant structure, and the variant structure of the shell is provided with a part feature of a boss. The size of the boss is larger than the size of the cover bayonet, and other parts of the shell of the metering display module are smaller than the size of the cover bayonet. The shell of the metering display module partially passes through the cover bayonet, and the boss is close to the cover and installed in fit with it. The boss of the metering display module is protrudingly installed on the cover. This installation of the metering display module on the cover is a protruding installation structure.

7. A socket or switch box combined with a metering element and a metering display module, characterized in that: The cover plate of the socket with a bottom box is provided with the parts features of a bayonet, a jack, a metering element seat, and a button hole; the bottom box is provided with the parts features of an inlet hole and an outlet hole; the cover plate of the socket with a bottom box can be installed with the metering display module in the flush mounting structure, and can also be installed with the metering display module shell variant structure in the protruding mounting structure.

8. A socket or switch box combined with a metering element and a metering display module, characterized in that: The switch box mainly includes the parts features of a cover plate, a bottom box, and a switch button. The cover plate is mainly provided with the parts features of a bayonet, a metering element seat, and a button hole; the bottom box is provided with the parts features of an inlet hole and an outlet hole; the switch box and the metering display module can be installed in the flush installation manner, and can also be installed in the protruding installation manner with the variant structure of the metering display module shell.

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