plug base

Abstract

The utility model relates to the field of low voltage apparatus, concretely relates to a plug-in base, and the electric meter position for installing electric energy meter is arranged at its one side, and the electric meter position is equipped with the electric meter plug-in terminal for being connected with the wiring terminal of electric energy meter along direction d1 and is connected with electricity; the electric meter to position detection mechanism includes first detection lever, first detection element, first detection lever spring, first detection lever is used for transmission cooperation with electric energy meter and has detection lever first position and detection lever second position, first detection lever spring acts on first detection lever and makes it have the tendency of moving to detection lever first position, first detection lever is arranged, is used for being driven by the electric energy meter of installing into the electric meter position to the installation in position and moves from detection lever first position to detection lever second position to trigger first detection element and make it output the signal for indicating that electric energy meter has installed in position, the plug-in base can indicate whether electric energy meter is installed in position, guarantees that electric energy meter can be reliably connected into the circuit.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to a plug-in base. Background Technology

[0002] Existing metering boxes typically consist of an incoming line switch, an energy meter, and an outgoing line switch connected in series to measure and control the flow of electricity in the power lines. However, existing metering boxes often have the following drawbacks: the energy meter is installed and removed via a plug-in connection, but lacks a structure to indicate whether the meter is properly installed, making it prone to loose connections. Utility Model Content

[0003] The purpose of this utility model is to overcome at least one defect of the prior art and provide a plug-in base that can indicate whether the electricity meter is installed in place, ensuring that the electricity meter is reliably connected to the circuit.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A plug-in base includes a meter position for mounting an electricity meter on one side thereon, and the meter position is provided with meter plug-in terminals for plugging into the wiring terminals of the electricity meter in direction d1 for electrical connection.

[0006] The plug-in base also includes a meter positioning detection mechanism; the meter positioning detection mechanism includes a first detection rod and a first detection element, both disposed on the plug-in base, and a first detection rod spring; the first detection rod is used to drive the electricity meter and has a first detection rod position and a second detection rod position; the first detection rod spring acts on the first detection rod to make it tend to move towards the first detection rod position; the first detection rod is configured to be driven by the electricity meter installed in the meter position to move from the first detection rod position to the second detection rod position, so as to trigger the first detection element to output a signal indicating that the electricity meter has been installed in place.

[0007] Furthermore, the first detection rod is slidably mounted on the plug-in base along direction d1.

[0008] Furthermore, the first detection rod also includes a first detection rod driven end protruding from the meter position. The first detection rod driven end is used to be pressed by the electricity meter to drive the first detection rod from the first detection rod position to the second detection rod position.

[0009] Furthermore, the first detection rod also includes a first detection rod body and a first detection rod triggering part, with the first detection rod driven end and the first detection rod triggering part respectively connected to both ends of the first detection rod body;

[0010] The first detection rod trigger part is used to trigger the first detection element;

[0011] The first detection rod body is provided with a first detection rod cavity; the first detection rod spring is a compression spring, at least a portion of the first detection rod spring is inserted into the first detection rod cavity and cooperates with the first detection rod, and the other end cooperates with the insertion base.

[0012] Furthermore, the trigger part of the first detection rod is bent and connected to the main body of the first detection rod, and the trigger part of the first detection rod and the main body of the first detection rod are integrally formed into an L-shaped structure.

[0013] Furthermore, the insertion base is provided with a first mounting cavity in which the main body of the first detection rod is slidably inserted. One end of the first mounting cavity is provided with a first sliding hole, and the end of the main body of the first detection rod connected to the driven end of the first detection rod is slidably inserted into the first sliding hole.

[0014] Furthermore, the first detection rod also includes a first detection rod limiting part disposed on the outer side of the first detection rod body; the first detection rod spring acts on the first detection rod to limit the first detection rod limiting part to engage with the portion of the insertion base located radially outside the first sliding hole, thereby holding the first detection rod in the first detection rod position.

[0015] Furthermore, the plug-in base also includes a base body and a first partition; the first partition cooperates with one side of the base body in the direction d3, and the first partition and the base body cooperate to form the meter position and the first mounting cavity.

[0016] Furthermore, the first detection element is a micro switch or a photoelectric sensor.

[0017] Furthermore, the plug-in base also includes a circuit board assembly disposed within the base body of the plug-in base, and the first detection element is connected to the circuit board assembly; the meter positioning detection mechanism is located on one side of the circuit board assembly in direction d3; the directions d1 and d3 are perpendicular to each other.

[0018] The plug-in base of this utility model has a meter positioning detection mechanism that can accurately indicate whether the electricity meter is installed in place, ensuring that the electricity meter is reliably connected to the circuit. Moreover, the meter positioning detection mechanism has a simple structure and reliable operation.

[0019] In addition, the first detection element is connected to the circuit board assembly, enabling online remote monitoring of whether the electricity meter is installed in place. Attached Figure Description

[0020] Figure 1 This is a projection view of the measuring device of this utility model in the direction perpendicular to d3;

[0021] Figure 2 This is a projection view of the circuit connection device, inlet switch, and outlet switch device of this utility model in the assembled state, perpendicular to direction d3.

[0022] Figure 3 This is a three-dimensional structural diagram of the circuit connection device, inlet switch, and outlet switch device of this utility model in the assembled state.

[0023] Figure 4 This is a schematic diagram of the circuit connection device of this utility model, wherein sub-figure (41) shows the circuit structure from one perspective and sub-figure (42) shows the circuit connection device from another perspective.

[0024] Figure 5 This is an exploded view of the base body of this utility model;

[0025] Figure 6 This is a structural diagram of the intermediate connecting mechanism, the first partition, the expansion mechanism, and the short-connection mechanism of this utility model in the assembled state;

[0026] Figure 7 This is a structural schematic diagram of the intermediate connecting mechanism, expansion mechanism and short-connection mechanism of this utility model in the assembled state;

[0027] Figure 8 This is a structural schematic diagram of the intermediate connecting component of this utility model, wherein sub-figure (81) shows the intermediate connecting component from one perspective, and sub-figure (82) is a cross-sectional view of the intermediate connecting component perpendicular to direction d2;

[0028] Figure 9 This is a schematic diagram of the short-circuit mechanism of this utility model;

[0029] Figure 10 This is a schematic diagram of the push rod of this utility model;

[0030] Figure 11 This is a first cross-sectional view of the metering device of this utility model, excluding the base body, circuit board assembly, and energy meter, perpendicular to the direction d2. It at least shows the push rod in the first position, the top pressure rod of the expansion mechanism in the first position, and the transmission rod of the short-circuit mechanism in the first position.

[0031] Figure 12 This is a second sectional view of the metering device of this utility model, with the base body, circuit board assembly, and energy meter removed, perpendicular to the direction d2. It at least shows the push rod in the second position, the top pressure rod of the expansion mechanism in the second position, and the transmission rod of the short-circuit mechanism in the second position.

[0032] Figure 13 This is a third sectional view of the metering device of this utility model, with the base body, circuit board assembly, and energy meter removed, perpendicular to direction d2. It at least shows the push rod in the second position and the transmission rod of the short-circuit mechanism in the second position.

[0033] Figure 14 This is a fourth sectional view of the metering device of this utility model, with the base body, circuit board assembly, and energy meter removed, perpendicular to direction d2. It at least shows the push rod in the first position and the transmission rod of the short-circuit mechanism in the first position.

[0034] Figure 15 This is a schematic diagram of the structure of the first partition of this utility model;

[0035] Figure 16 This is a structural schematic diagram of the front-end connection mechanism and the rear-end connection mechanism of this utility model;

[0036] Figure 17 This is a schematic diagram of the front-end connection component of this utility model. Sub-figure (171) shows the front-end connection component from one perspective, and sub-figure (172) is a cross-sectional view of the front-end connection component perpendicular to direction d2, with the stopper located in the first position.

[0037] Figure 18 This is a schematic diagram of the front-end connection component of this utility model. Sub-figure (181) shows the front-end connection component from one perspective, and sub-figure (182) is a cross-sectional view of the front-end connection component perpendicular to direction d2, with the stopper located in the second position.

[0038] Figure 19 This is a structural diagram of the second partition, front-end connecting mechanism, third partition, and rear-end connecting mechanism of this utility model in the assembled state;

[0039] Figure 20 This is a structural schematic diagram of the second partition and the first cover plate of this utility model;

[0040] Figure 21 This is a structural schematic diagram of the third partition and the second cover plate of this utility model;

[0041] Figure 22 This is a structural schematic diagram of the first partition, inlet switch, and outlet switch device of this utility model in the assembled state. Sub-figure (221) shows the first partition, inlet switch, and outlet switch device from one perspective. Sub-figure (222) is an enlarged view of part 22a of sub-figure (221).

[0042] Figure 23 This is a cross-sectional view of the locking mechanism of this utility model perpendicular to direction d2;

[0043] Figure 24 This is a schematic diagram of the structure of the switch electrical appliance of this utility model;

[0044] Figure 25This is a schematic diagram of the structure of the drive module of this utility model, wherein sub-figure (251) is a cross-sectional view of the drive module perpendicular to direction d2, and sub-figure (252) is an enlarged view of part 25a of sub-figure (251);

[0045] Figure 26 This is another cross-sectional view of the drive module of this utility model, perpendicular to direction d2;

[0046] Figure 27 This is a schematic diagram of the structure of the linkage handle, linkage gear, initial micro switch, opening micro switch and closing micro switch of this utility model. Sub-figure (271) shows the linkage handle, linkage gear, initial micro switch, opening micro switch and closing micro switch in the assembled state from one perspective. Sub-figure (272) shows the linkage gear in one perspective. Sub-figure (273) is a cross-sectional view of the linkage gear and linkage handle in the assembled state perpendicular to direction d2. Sub-figure (274) is a projection view of the linkage handle, linkage gear, initial micro switch, opening micro switch and closing micro switch in the assembled state perpendicular to direction d2.

[0047] Figure 28 This is a schematic diagram of the structure of the second half-shell of this utility model;

[0048] Figure 29 This is a structural schematic diagram of the drive module of this utility model with the module shell removed, wherein sub-figure (291) is the left view of the drive module and sub-figure (292) is the right view of the drive module.

[0049] Figure 30 This is a cross-sectional view of the present invention with the metering device of the electricity meter removed, perpendicular to direction d2.

[0050] Figure 31 yes Figure 30 A magnified view of a portion of the image, where sub-figure (311) is... Figure 30 An enlarged view of part 30a, sub-figure (312) is Figure 30 An enlarged view of part 30b, sub-figure (313) is Figure 30 Enlarged view of part 30c;

[0051] Figure 32 This is a structural schematic diagram of the first communication module, the second communication module, and the third cover plate of this utility model;

[0052] Figure 33 This is a structural schematic diagram of the fourth and fifth cover plates of this utility model;

[0053] Figure 34 This is a schematic diagram of the battery assembly of this utility model.

[0054] Figure 35 This is another structural schematic diagram of the drive module of this utility model with the module shell removed, wherein sub-figure (351) is the left view of the drive module and sub-figure (352) is the right view of the drive module.

[0055] Explanation of reference numerals in the attached figures

[0056] Plug-in base 100;

[0057] The base body is 110; the meter position is 111, the inlet switch position is 112, the outlet switch position is 113, the communication module position is 114, the intermediate cavity is 115, the front cavity is 116, the rear cavity is 117, the base terminal limit plate is 118, the bottom plate is 119, the base is 120, the inlet position is 121, the outlet position is 122, the first mounting cavity is 123, the first sliding hole is 124, the second sliding hole is 125, the first section of the sliding hole is 126, and the tail section of the sliding hole is 127.

[0058] Circuit board assembly 130, power terminal 131;

[0059] First partition 140; first partition body 141, first hole of body 142, second hole of body 143, first side plate 144, first hole of side plate 145, second hole of side plate 146, second side plate 147, first baffle 148, first protective cover 149.

[0060] Second partition 150; second partition body 151, second side plate 152, second partition cavity 153, second protective cover 154, second mounting hole 155, second side plate 156;

[0061] Third partition 160; third partition body 161, third side plate 162, third partition cavity 163, third protective cover 164, third mounting hole 165, third side plate 166.

[0062] First cover plate 170; first connecting arm 171; first shaft post 172;

[0063] Second cover plate 180; second connecting arm 181; second shaft 182;

[0064] Third cover plate 190; third connecting arm 191; third cover plate body 192; third cover plate buckle 193;

[0065] Battery assembly 200; battery handle 201; battery body 202; battery connector 203;

[0066] Fourth partition 210;

[0067] Fifth partition 211;

[0068] Circuit connection device 215;

[0069] Intermediate connecting mechanism 220;

[0070] Intermediate connecting component 221, first connecting component 2210, second connecting component 2211:

[0071] Electricity meter connector 222, electricity meter plug terminal 223, connecting part 224, elastic plug flap 225, plug flap moving surface 2251, connecting part cavity 226, expansion assembly 227, mating part 228, transmission compression spring 229, expansion part 230, top pressure rod 231, top pressure rod spring 232, first copper busbar 233, inner plug terminal 234, top pressure rod insertion hole 235, electricity meter inlet plug terminal 236, electricity meter outlet plug terminal 237, phase partition 238; expansion mechanism 239;

[0072] Short-circuit mechanism 240; transmission rod 241; short-circuit component 242; transmission rod spring 243;

[0073] Front-end connection mechanism 250; Back-end connection mechanism 251;

[0074] Front-end connection component 252; Back-end connection component 253;

[0075] 254; baffle plate 2541, moving part of the stop 2542, back plate of the stop 2543, spring cavity of the stop 2544, side plate of the stop 2545, opening in the back plate 2546; terminal block 255; main body of the terminal block 2551, wiring hole of the terminal block 2552, connecting plate of the terminal block 2553; wiring screw 256; stop spring 257; second copper busbar 258; first plate of copper busbar 2581, tail plate of copper busbar 2582, conductive plate extension plate 2583; external plug-in terminal 259.

[0076] External terminal 260;

[0077] Push rod 280; push rod main body 281, push rod handle 282, first drive unit 283, second drive unit 284;

[0078] Incoming line switch 300; switch housing 301; operating handle 302; housing body 303; terminal block 304;

[0079] Contact mechanism 310, moving contact 311, stationary contact 312;

[0080] Short circuit protection mechanism 320;

[0081] Arc-extinguishing chamber 330;

[0082] Switch terminal block 340; Switch inlet terminal block 341; Switch outlet terminal block 342;

[0083] Overload protection mechanism 350;

[0084] Operating mechanism 360;

[0085] Adjusting screw 370;

[0086] Locking mechanism 375;

[0087] Locking component 380; locking component body 381, locking component spring limiting part 382, ​​locking component groove 383, locking component moving part 384, locking protrusion 385; locking component spring 386;

[0088] Linkage rod 390; linkage rod drive arm 391; linkage rod driven arm 392; linkage rod shaft hole 393;

[0089] Unlocking cam 394, cam drive finger 395; spring seat 396;

[0090] Outgoing line switch device 400;

[0091] Outgoing switch 410;

[0092] Drive module 460; linkage shaft 461, first arm of linkage shaft 4611, second arm of linkage shaft 4612; leakage current test mechanism 462; linkage handle 463, handle positioning part 4631, opening positioning part 4632, closing positioning part 4633, feedback drive part 4634, opening / closing actuator part 4635, closing actuator part 4636, opening actuator part 4637; first half-shell 465; second half-shell 466, opening / closing limit part 4661, opening limit part 4662, closing limit part 4663; gear set 467, first gear 4671, second gear 4672 The components include: third gear 4673, fourth gear 4674, trip block 46740, linkage gear 4675, opening / closing drive block 4676, position control block 4677, closing drive surface 4678, opening drive surface 4679; feedback element 468, spiral body 4680, first arm 4681, second arm 4682; conductive element 469; initial position micro switch 470, closing position micro switch 471, opening position micro switch 472; motor 473; leakage current trip unit 474; electric operating mechanism 475; module housing 476; closing feedback mechanism 477; spring shaft 478.

[0093] First communication module 500;

[0094] Second communication module 600;

[0095] Zero-sequence current transformer 700;

[0096] Current sampling element 710;

[0097] The meter positioning detection mechanism 720 includes: a first detection rod 721, a first detection rod driven end 722, a first detection rod body 723, a first detection rod limiting part 724, a first detection rod cavity 725, a first detection rod triggering part 726, and a first detection rod spring 727.

[0098] Switch position detection mechanism 730; second detection rod 731, second detection rod driven end 732, second detection rod body 733, second detection rod trigger part 734, second detection rod limiting part 735. Detailed Implementation

[0099] The following description, in conjunction with the accompanying drawings, further illustrates the specific implementation of the measuring device of this utility model. The measuring device of this utility model is not limited to the description of the following embodiments.

[0100] The metering device of this invention is applied in electrical cabinets with metering functions, such as metering boxes, distribution cabinets, and control cabinets. The number of metering devices installed in each electrical cabinet can be adjusted according to actual needs.

[0101] like Figure 1 As shown, the metering device of this utility model includes a plug-in base 100, an energy meter, and two sets of switching devices. The two sets of switching devices are an inlet switch 300 and an outlet switch device 400, with the outlet switch device 400 including an outlet switch 410. The plug-in base 100 is used to connect the inlet switch 300, the energy meter, and the outlet switch device 400 in series. That is, the plug-in base 100 includes a circuit connection device 215 disposed therein, which connects the inlet switch 300, the energy meter (not shown in the figure), and the outlet switch 410 in series. Of course, the circuit connection device 215 is also used to electrically connect to the inlet external conductor and the outlet external conductor respectively. Specifically, the inlet external conductor, the inlet switch 300, the energy meter, the outlet switch 410, and the outlet external conductor are connected in series to connect the metering device of this utility model to the target circuit to be metered. Furthermore, the circuit connection device 215 is connected to the energy meter, the incoming switch 300, and the outgoing switch 410 in series; that is, the circuit connection device 215 includes an energy meter plug-in terminal 223 for plugging into the terminals of the energy meter, an incoming switch plug-in terminal for plugging into the terminals of the incoming switch 300, and an outgoing switch plug-in terminal for plugging into the terminals of the outgoing switch 410. The energy meter plug-in terminal 223, the incoming switch plug-in terminal, and the outgoing switch plug-in terminal are all mounted on the plug-in base 100.

[0102] As an alternative method for connecting the metering device of this utility model to the target circuit to be measured, the circuit connection device 215 only connects the incoming switch 300, the energy meter, and the outgoing switch 410 in series, without electrically connecting them to the incoming external conductor or the outgoing external conductor; instead, the outgoing terminal of the incoming switch 300 is plugged into the circuit connection device 215 for electrical connection, the incoming terminal of the incoming switch 300 is used for electrical connection to the incoming external conductor, the incoming terminal of the outgoing switch 410 is plugged into the circuit connection device 215 for electrical connection, and the outgoing terminal of the outgoing switch 410 is used for electrical connection to the outgoing external conductor.

[0103] Specifically, of all the meter plug-in terminals 223, half serve as meter inlet plug-in terminals 236 and the other half as meter outlet plug-in terminals 237; of all the meter wiring terminals, half serve as meter inlet wiring terminals and the other half as meter outlet wiring terminals; the meter inlet plug-in terminals 236 and the meter inlet wiring terminals are connected one-to-one; the meter outlet plug-in terminals 237 and the meter outlet wiring terminals are connected one-to-one; the meter inlet plug-in terminals 236, 237, and the meter inlet and outlet wiring terminals are respectively matched with each phase of the meter. Furthermore, the plug-in base 100 also includes multiple meter connectors 222 disposed thereon, with one end of each connector protruding into the meter position 111 as a meter plug-in terminal 223.

[0104] Specifically, of all the input switch terminals, half serve as the first input terminal and the other half as the second input terminal; of all the terminals of the input switch 300, half serve as the input terminals and the other half as the output terminals; the first input terminal is electrically connected to the input terminals of the input switch 300 in a one-to-one correspondence; the second input terminal is electrically connected to the output terminals of the input switch 300 in a one-to-one correspondence; the first input terminal, the second input terminal, the input terminals of the input switch 300, and the output terminals of the input switch 300 are respectively matched with each phase of the input switch 300.

[0105] Specifically, of all the outlet switch terminals, half serve as the first outlet terminal and the other half as the second outlet terminal; of all the wiring terminals of the outlet switch 410, half serve as the incoming wiring terminals and the other half as the outgoing wiring terminals; the first outlet terminal is electrically connected to the incoming wiring terminals of the outlet switch 410 in a one-to-one correspondence; the second outlet terminal is electrically connected to the outgoing wiring terminals of the outlet switch 410 in a one-to-one correspondence; the first outlet terminal, the second outlet terminal, the incoming wiring terminals of the outlet switch 410, and the outgoing wiring terminals of the outlet switch 410 each correspond to a phase of the outlet switch 410. The number of phases of the energy meter, the number of phases of the incoming switch 300, and the number of phases of the outlet switch 410 are the same.

[0106] Specifically, both the incoming switch 300 and the outgoing switch 410 are two-phase switching devices, preferably two-phase circuit breakers; each set of switching devices includes two incoming terminals and two outgoing terminals. The energy meter is a two-phase energy meter, which includes four terminals: two for incoming connections and two for outgoing connections. It should be noted that the number of phases of the incoming switch 300, the outgoing switch 410, and the energy meter can be adjusted according to actual needs, and the circuit connection device 215 of the plug-in base 100 should also be adjusted accordingly; for example, the number of phases of the incoming switch 300, the outgoing switch 410, and the energy meter can be four-phase.

[0107] like Figure 5 As shown, the metering device of this utility model also includes a communication module and a circuit board assembly 130 disposed within the plug-in base 100, with the communication module connected to the circuit board assembly 130. The circuit board assembly 130 is used at least to collect current information and / or voltage information and / or fault information. The current information includes the current value of the circuit where the metering device is located, the voltage information includes the voltage value of the circuit where the metering device is located, and the fault information includes the reason for the tripping of the outgoing switch 410. The circuit board assembly 130 is used to implement the opening and closing control of the incoming switch 300 and / or the opening and closing control of the outgoing switch 410.

[0108] like Figure 1 , 5 As shown, the height, length, and width directions of the insertion base 100 are directions d1, d2, and d3, respectively, and directions d1, d2, and d3 are perpendicular to each other. The height, length, and width directions of the measuring device are the same as those of the insertion base 100.

[0109] like Figure 1 , 4As shown in Figures 5 and 8, the plug-in base 100 includes a meter position 111 for installing an energy meter, a switch position for installing a switchgear, and a communication module position 114 for installing a communication module, all located on one side. Each switch position corresponds to a switchgear. The plug-in base 100 has two switch positions: an inlet switch position 112 for installing an inlet switch 300 and an outlet switch position 113 for installing an outlet switch device 400. The meter position 111 is used to insert an energy meter, thereby connecting the energy meter to the circuit connection device 215. Specifically, when the energy meter is inserted into the meter position 111, the meter's terminals are connected to the meter's plug-in terminals 223 within the meter position 111. The incoming line switch position 112 is used to insert the incoming line switch 300 into it, so that the incoming line switch 300 is electrically connected to the circuit connection device 215. That is, when the incoming line switch 300 is inserted into the incoming line switch position 112, the terminals of the incoming line switch 300 are electrically connected to the incoming line switch plug-in terminals in the incoming line switch position 112. The outgoing line switch position 113 is used to insert the outgoing line switch 410 into it, so that the outgoing line switch 410 is electrically connected to the circuit connection device 215. That is, when the outgoing line switch 410 is inserted into the outgoing line switch position 113, the terminals of the outgoing line switch 410 are electrically connected to the outgoing line switch plug-in terminals in the outgoing line switch position 113. The incoming line switch position 112, communication module position 114, and outgoing line switch position 113 are arranged sequentially along direction d2 and located on one side of the meter position 111 in direction d1. That is, the incoming line switch position 112, communication module position 114, and outgoing line switch position 113 are arranged sequentially along direction d2, and all three are located on the same side of the meter position 111 in direction d1. The meter position 111, incoming line switch position 112, outgoing line switch position 113, and communication module position 114 are located on one side of the circuit board assembly 130 in direction d3.

[0110] In the metering device, the circuit board assembly 130, the energy meter, the incoming line switch 300, the outgoing line switch device 400, and the communication module are arranged in a compact and reasonable manner. Firstly, this significantly reduces the installation space required for the metering device. Secondly, it facilitates a significant reduction in the length of the connection lines between the energy meter, the incoming line switch 300, the outgoing line switch device 400, the communication module, and the circuit board assembly 130, simplifying the wiring structure of the metering device. Thirdly, the circuit board assembly 130 is located inside the plug-in base 100, which provides it with sufficient protection and extends its service life.

[0111] like Figure 1As shown, the plug-in base 100 also includes an inlet position 121 and an outlet position 122, with at least two inlet terminals disposed in the inlet position 121 for electrical connection with an external conductor of the inlet line and at least two outlet terminals disposed in the outlet position 122 for electrical connection with an external conductor of the outlet line; the inlet terminals, inlet switch 300, energy meter, outlet switch 410 and outlet terminals are connected in series in sequence.

[0112] Specifically, the incoming and outgoing terminals are arranged in a one-to-one correspondence, and the number of phases is the same as that of the circuit in which the metering device of this utility model is located.

[0113] As an alternative arrangement of the incoming and outgoing terminals, the incoming terminals are arranged in a one-to-one correspondence with the number of phases of the metering device of this utility model, that is, the incoming terminals are arranged in a one-to-one correspondence with the first incoming plug-in terminal and connected in series one-to-one. The number of outgoing terminals is n times the number of phases of the metering device of this utility model, where n≥2. Each phase of the metering device is provided with n outgoing terminals, that is, each second outgoing plug-in terminal is connected in series with n outgoing terminals respectively. These n outgoing terminals are connected in parallel with each other, so that the metering device of this utility model can be electrically connected to n parallel load circuits.

[0114] like Figure 1 As shown, in direction d3, the meter position 111, the incoming line switch position 112, the outgoing line switch position 113, the communication module position 114, the incoming line position 121, and the outgoing line position 122 are all located on the same side of the plug-in base 100 and on the same side of the circuit board assembly 130. In direction d1, the meter position 111, the incoming line switch position 112, and the incoming line position 121 are arranged sequentially, as are the meter position 111, the outgoing line switch position 113, and the outgoing line position 122. In direction d2, the incoming line switch position 112 and the outgoing line switch position 113 are arranged side by side with intervals, and the incoming line position 121 and the outgoing line position 122 are arranged side by side with intervals. The incoming line switch position 112 and the incoming line position 121 are located on one side of the communication module position 114, and the outgoing line switch position 113 and the outgoing line position 122 are located on the other side of the communication module 114.

[0115] In the metering device, the inlet position 121 and the outlet position 122 are located on the same end of the plug-in base 100, which facilitates the operator to wire the metering device and improves the wiring efficiency.

[0116] It should be noted that the meter position 111, the incoming line switch position 112, the outgoing line switch position 113, the communication module position 114, the incoming line position 121, and the outgoing line position 122 are not merely two-dimensional planar positions, but rather three-dimensional spatial positions.

[0117] like Figure 1 , 2As shown in Figures 11, 12, and 30, the meter position 111 is used to insert the energy meter along direction d1. Correspondingly, the meter plug-in terminal 223 provided on the plug-in base 100 is plugged into and electrically connected to the wiring terminal of the energy meter along direction d1. Furthermore, each of the meter connectors 222 is arranged side by side with intervals along direction d2, and the corresponding meter plug-in terminals 223 are also arranged side by side with intervals along direction d2. The meter inlet plug-in terminal 236 and the meter outlet plug-in terminal 237 are arranged alternately along direction d2.

[0118] Specifically, among all the meter connectors 222, the meter connectors 222 used for plugging and connecting to the terminals of the same phase of the electricity meter are arranged adjacent to each other; the meter connector 222 that is electrically connected to the incoming terminal of the electricity meter is the incoming meter connector, and the meter connector 222 that is electrically connected to the outgoing terminal of the electricity meter is the outgoing meter connector. The incoming meter connectors and the outgoing meter connectors are arranged alternately in the direction d2. It should be noted that the arrangement of all the meter connectors 222 is not limited to the above-described manner and can be adjusted according to actual needs. For example, the meter connector 222 that is plugged into and electrically connected to the incoming terminal of the energy meter is the incoming meter connector, and each incoming meter connector is arranged side by side with intervals along direction d2. The meter connector 222 that is plugged into and electrically connected to the outgoing terminal of the energy meter is the outgoing meter connector, and each outgoing meter connector is arranged side by side with intervals along direction d2. All outgoing meter connectors are located on one side of all incoming meter connectors in direction d3. On the projection direction of the plug-in base 100, which is an orthogonal projection of direction d3, the incoming meter connectors and outgoing meter connectors are arranged alternately or the corresponding incoming meter connectors and outgoing meter connectors (i.e., two meter connectors 222 that are electrically connected to the terminal of the same phase of the energy meter) overlap.

[0119] like Figure 1 , 2 As shown in Figures 11, 12, and 30, the incoming line switch position 112 is used for the incoming line switch 300 to be installed in the direction d3. Correspondingly, the incoming line switch plug-in terminal provided on the plug-in base 100 is plugged into and electrically connected to the wiring terminal of the incoming line switch 300 in the direction d3. Further, each of the first incoming line plug-in terminals is arranged side by side with intervals in the direction d2; each of the second incoming line plug-in terminals is arranged side by side with intervals in the direction d2; and the first incoming line plug-in terminal and the corresponding second incoming line plug-in terminal are arranged side by side with intervals in the direction d1.

[0120] like Figure 1 , 2As shown in Figures 11, 12, and 30, the outgoing switch position 113 is used to accommodate the outgoing switch device 400 along direction d3. Correspondingly, the outgoing switch plug-in terminals on the plug-in base 100 are plugged into and electrically connected to the wiring terminals of the outgoing switch 410 along direction d3. Furthermore, each of the first outgoing plug-in terminals is arranged side-by-side with intervals along direction d2; each of the second outgoing plug-in terminals is arranged side-by-side with intervals along direction d2; and the first outgoing plug-in terminals and their corresponding second outgoing plug-in terminals are arranged side-by-side with intervals along direction d2.

[0121] like Figure 1 , 5 As shown, the communication module position 114 is used to house the communication module along direction d3. Further, the metering device has two communication modules: a first communication module 500 and a second communication module 600. The first communication module 500 and the second communication module 600 are arranged side-by-side along direction d1 and both are inserted into the communication module position 114 along direction d3. The first communication module 500 is positioned closer to the energy meter than the second communication module 600 along direction d1. Both the first communication module 500 and the second communication module 600 are connected to the circuit board assembly 130, which provides power to both modules and communicates with the outside world through them. Preferably, the first communication module 500 and the second communication module 600 are electrically and communicatively connected to the circuit board assembly 130 via a plug-in connection. It should be noted that the metering device of this invention can also have only one communication module or three communication modules, the number of which can be adjusted according to actual needs. The circuit board assembly 130 is connected to a remote control device (such as a host computer or a background control system) via a communication module.

[0122] like Figure 1-3 As shown in Figures 11, 12, and 30, the incoming and outgoing terminals are respectively used for inserting incoming and outgoing external conductors along direction d1. Specifically, the incoming terminal is used for inserting an incoming external conductor along direction d1, and the outgoing terminal is used for inserting an outgoing external conductor along direction d1. Furthermore, the incoming terminals are arranged side-by-side with intervals along direction d2; the outgoing terminals are also arranged side-by-side with intervals along direction d2.

[0123] like Figure 2-4 Figures 8, 11-14, 17, 18, and 30 show one embodiment of the circuit connection device 215.

[0124] The circuit connection device 215 includes a front-end connection mechanism 250, an intermediate connection mechanism 220 and a rear-end connection mechanism 251 connected in series in the same circuit. The front-end connection mechanism 250 is used to connect the incoming external conductor and the incoming switch 300 in series. The intermediate connection mechanism 220 is used to connect the incoming switch 300, the energy meter and the outgoing switch 410 in series in sequence. The rear-end connection mechanism 251 is used to connect the outgoing switch 410 and the outgoing external conductor in series.

[0125] like Figure 2-4 As shown in Figures 11-14, 17, 18, and 30, the front-end connection mechanism 250 includes at least two front-end connection components 252. Each front-end connection component 252 corresponds to one phase of the incoming line switch 300, meaning the number of front-end connection components 252 is the same as the number of phases of the incoming line switch 300. One end of each front-end connection component 252 is electrically connected to the external conductor of the incoming line, and the other end is electrically connected to the incoming line terminal of the incoming line switch 300. The rear-end connection mechanism 251 includes at least two rear-end connection components 253. Each rear-end connection component 253 corresponds to one phase of the outgoing line switch 410, meaning the number of rear-end connection components 253 is the same as the number of phases of the outgoing line switch 410. One end of each rear-end connection component 253 is electrically connected to the external conductor of the outgoing line, and the other end is electrically connected to the outgoing line terminal of the outgoing line switch 410.

[0126] Specifically, the front-end connection component 252 has an input terminal at one end and an input first plug-in terminal at the other end. The front-end connection component 252 also includes an input copper busbar. The input terminal is connected in series with the input first plug-in terminal via the input copper busbar, meaning that both ends of the input copper busbar are electrically connected to the input terminal and the input first plug-in terminal, respectively. The rear-end connection component 253 has an output terminal at one end and an output second plug-in terminal at the other end. The rear-end connection component 253 also includes an output copper busbar. The output terminal is connected in series with the output second plug-in terminal via the output copper busbar, meaning that both ends of the output copper busbar are electrically connected to the output terminal and the output second plug-in terminal, respectively.

[0127] Specifically, the front-end connecting component 252 and the rear-end connecting component 253 have the same structure, both including an external plug-in terminal 259, a second copper busbar 258, and an external connection terminal 260 connected in series. The external plug-in terminal 259, the second copper busbar 258, and the external connection terminal 260 of the front-end connecting component 252 serve as the first incoming plug-in terminal, the incoming copper busbar, and the incoming terminal, respectively; the external plug-in terminal 259, the second copper busbar 258, and the external connection terminal 260 of the rear-end connecting component 253 serve as the second outgoing plug-in terminal, the outgoing copper busbar, and the outgoing terminal, respectively. The identical structure of the front-end connecting component 252 and the rear-end connecting component 253 reduces the number of parts in the plug-in base 100, simplifying production and assembly operations. The front-end connecting components 252 are arranged side-by-side with intervals along direction d2, and the rear-end connecting components 253 are arranged side-by-side with intervals along direction d2. The front-end connecting components 252 and the rear-end connecting components 253 are arranged side-by-side with intervals along direction d2.

[0128] Specifically, the second copper busbar 258 includes a head plate 2581 and a tail plate 2582. One end of the head plate 2581 is electrically connected to an external connector 259, and the other end is bent and connected to one end of the tail plate 2582. The tail plate 2582 is electrically connected to an external connector 260. Further, the plane of the head plate 2581 is parallel to directions d1 and d2 and perpendicular to direction d3; the plane of the tail plate 2582 is parallel to directions d2 and d3 and perpendicular to direction d1. Further, the second copper busbar 258 also includes a conductive plate extension 2583, which extends along direction d3 for plugging into and electrically connecting to the power supply terminal 131 of the circuit board assembly 130 along direction d3, supplying power to the circuit board assembly 130. This design is simple in structure and easy to install.

[0129] Specifically, the external connector 259 is a busbar clamp.

[0130] Specifically, the external terminal 260 includes a terminal block 255 and a terminal screw 256. The terminal block 255 has a terminal block hole 2552 extending in the direction d1. The terminal screw 256 is threaded to the terminal block 255 and one end is inserted into the terminal block hole 2552. The external terminal 260 also includes a wiring position indicator mechanism. The wiring position indicator mechanism includes a stop 254 and a stop spring 257 for driving cooperation with an external conductor (input external conductor or output external conductor) and having a first position and a second position. The stop 254 includes a baffle plate 2541. The stop spring 257 acts on the stop 254, causing it to tend to move towards a first position. That is, when the stop 254 is not subjected to an external force—such as a driving force from an external conductor—the stop spring 257 holds the stop 254 in the first position. When the stop 254 is in the first position, the baffle plate 2541 blocks the wiring screw 256. When the stop 254 is driven from the first position to the second position by an external conductor inserted into the terminal block hole 2552 and in place, the baffle plate 2541 avoids the wiring screw 256, allowing the operator to tighten the wiring screw 256. Furthermore, the stop 254 is configured to move entirely along direction d1. Furthermore, the stop 254 also includes a stop back plate 2543, which is bent and connected to the baffle plate 2541; one end of the terminal block wiring hole 2552 is used for inserting an external conductor, and the stop back plate 2543 is located on the outside of the other end of the wiring hole; the stop 254 also includes a stop driven part 2542, one end of which is connected to the stop back plate 2543 and the other end is inserted into the terminal block wiring hole 2552; the stop driven part 2542 is used to move the stop 254 from the first position to the second position by being pressed by the external conductor. Furthermore, the baffle 254 also includes a pair of baffle side plates 2545; in the direction d2, a pair of sides of the baffle plate 2541 are respectively connected to the two baffle side plates 2545, and a pair of sides of the baffle back plate 2543 are respectively connected to the two baffle side plates 2545. The two baffle side plates 2545 are respectively connected to both sides of the terminal block 255 and slide in cooperation with the terminal block 255; the baffle plate 2541, the baffle back plate 2543 and the baffle side plates 2545 are generally formed into a scoop-shaped structure. Furthermore, the terminal block 255 includes a terminal block body 2551 and a terminal block connecting plate 2553. The terminal block body 2551 is provided with a terminal block wiring hole 2552. The terminal block connecting plate 2552 is connected to one end of the terminal block body 2551 and electrically connected to the copper busbar head plate 2581 of the second copper busbar 258. The back plate 2543 of the baffle is provided with a back plate opening 2546 for the terminal block connecting plate 2553 to pass through.Furthermore, the stop spring 257 is a linear compression spring; the stop 254 also includes a stop spring cavity 2544, one end of which is an open end and is disposed on the stop back plate 2543, and the other end extends into the stop driven part 2542; one end of the stop spring 2543 is inserted into the stop spring cavity 2544 and the other end is fixedly disposed (for example, against the insertion base 100).

[0131] like Figure 2-4 As shown in Figures 7 and 8, the intermediate connection mechanism 220 includes multiple intermediate connection components 221, half of which are first connection components 2210 and the other half are second connection components 2211. Each first connection component 2210 and each second connection component 2211 is configured to correspond one-to-one with each phase of the energy meter, that is, the number of first connection components 2210 and the number of second connection components 2211 are the same as the number of phases of the energy meter. One end of the first connection component 2210 is electrically connected to the outgoing terminal of the incoming switch 300 and the other end is electrically connected to the incoming terminal of the energy meter. One end of the second connection component 2211 is electrically connected to the outgoing terminal of the energy meter and the other end is electrically connected to the incoming terminal of the outgoing switch 410.

[0132] Specifically, the first connecting component 2210 has a meter connector 222 at one end and an incoming second plug-in terminal at the other end. The first connecting component 2210 also includes a first intermediate copper busbar. The meter connector 222 is connected in series with the incoming second plug-in terminal via the first intermediate copper busbar, meaning that both ends of the first intermediate copper busbar are electrically connected to the meter connector 222 and the incoming second plug-in terminal, respectively. The second connecting component 2211 has a meter connector 222 at one end and an outgoing first plug-in terminal at the other end. The second connecting component 2211 also includes a second intermediate copper busbar. The meter connector 222 is connected in series with the outgoing first plug-in terminal via the second intermediate copper busbar, meaning that both ends of the second intermediate copper busbar are electrically connected to the meter connector 222 and the outgoing first plug-in terminal, respectively. Furthermore, both the first connecting component 2210 and the second connecting component 2211 include a meter connector 222, a first copper busbar 233, and an internal plug-in terminal 234 connected in series. The first copper busbar 233 and the inner plug-in terminal 234 of the first connecting component 2210 serve as the first intermediate copper busbar and the second incoming plug-in terminal, respectively. The first copper busbar 233 and the inner plug-in terminal 234 of the second connecting component 2211 serve as the second intermediate copper busbar and the first outgoing plug-in terminal, respectively.

[0133] Specifically, the internal insertion terminal 234 is a busbar clamp.

[0134] Specifically, the meter connector 222 includes meter plug-in terminals 223 and a connecting part 224 connected in sequence. The connecting part 224 is used to electrically connect to the first intermediate copper busbar or the second intermediate copper busbar.

[0135] Specifically, on the projection direction of the circuit connection device 215, which is an orthogonal projection of direction d3, a portion of the first intermediate copper busbar intersects with a portion of the second intermediate copper busbar, and a phase spacer 238 is provided at the intersection of the first and second intermediate copper busbars. Furthermore, the phase spacer 238 is provided with limiting grooves for the corresponding first and second intermediate copper busbars to be embedded within.

[0136] like Figure 1 , 5 As shown in -7, 11-15, 19-22, 30, 32, and 33, the plug-in base 100 also includes a base body 110. The circuit board assembly 130 is disposed inside the base body 110. The meter position 111, the incoming line switch position 112, the outgoing line switch position 113, the communication module position 114, the incoming line position 121, and the outgoing line position 122 are all located on one side of the base body 110 in the direction d3.

[0137] Specifically, the base body 110 includes a base 120 and a bottom plate 119. The bottom plate 119 and the base 120 are fitted together in opposite directions d3. The circuit board assembly 130 is disposed in the circuit board mounting cavity formed by the bottom plate 119 and the base 120.

[0138] like Figure 6 , 7 As shown in 11-15 and 30, the plug-in base 100 further includes a first partition 140, which is fixedly connected to one side of the base body 110 in the direction d3. The first partition 140 and the base body 110 cooperate to form an electricity meter position 111. A portion of the electricity meter connector 222 (including the connecting part 224 of the electricity meter connector 222), the first copper busbar 233, the incoming second plug-in terminal, and the outgoing first plug-in terminal are located between the first partition 140 and the base body 110 in the direction d3.

[0139] like Figure 1 , 19As shown in Figures -21 and -30, the plug-in base 100 further includes a second partition 150 and a third partition 160, which are fixedly connected to one side of the base body 110 in direction d3. The first partition 140, the second partition 150, and the base body 110 cooperate to form an inlet switch position 112. The first partition 140, the third partition 160, and the base body 110 cooperate to form an outlet switch position 113. The first incoming line plug-in terminal and the incoming line copper busbar are located between the second partition 150 and the base body 110 in the direction d3; the second outgoing line plug-in terminal and the outgoing line copper busbar are located between the third partition 160 and the base body 110 in the direction d3; that is, the external plug-in terminal 259 and the second copper busbar 258 of the front end connecting mechanism 250 are located between the second partition 150 and the base body 110 in the direction d3; the external plug-in terminal 259 and the second copper busbar 258 of the rear end connecting mechanism 251 are located between the third partition 160 and the base body 110 in the direction d3.

[0140] like Figure 5 As shown, the communication module 114 is directly mounted on the base body 110, specifically a cavity on the base body 110 for mounting the communication module.

[0141] Specifically, the base body 110 also includes a middle cavity 115, a front cavity 116, and a rear cavity 117; the communication module position 114, the front cavity 116, and the rear cavity 117 are located on one side of the middle cavity 115 in the direction d1, and the front cavity 116 and the rear cavity 117 are arranged side by side and spaced apart along the direction d2 and are respectively located on both sides of the communication module position 114 in the direction d2.

[0142] Specifically, the first partition 140 is installed within the intermediate cavity 115. The first partition 140 includes a first partition body 141 and a first side plate 144 bent and connected together. The first partition body 141 is positioned opposite the base body 110 along direction d3, that is, the first partition body 141 is positioned opposite the bottom wall of the intermediate cavity 115 along direction d3. The portion of the meter connector 222, the first copper busbar 233, and the internal insertion terminal 234 of each of the intermediate connecting components 221 are all disposed between the first partition body 141 and the base body 110 (specifically, the bottom wall of the intermediate cavity 115). Further, the first partition 140 also includes a second side plate 147 bent and connected to the first partition body 141, and a first baffle 148 bent and connected to the second side plate 147. The second side plate 147 and the first side plate 144 are positioned opposite each other along direction d1, and the first baffle 148 is positioned opposite each other along direction d3.

[0143] Specifically, the base body 110 also includes a base terminal limiting plate 118. The base terminal limiting plate 118 and the first partition body 141 are arranged opposite each other along direction d1. The base terminal limiting plate 118 is provided with a terminal clearance opening. The terminal clearance opening is arranged one-to-one with the meter plug-in terminal 223. The free end of the meter plug-in terminal 223 passes through the corresponding terminal clearance opening and protrudes into the meter position 111. The base terminal limiting plate 118 and the connecting part 224 of the meter connector 222 are limited and cooperated to prevent the meter connector 222 from moving along direction d1 toward the side where the meter position 111 is located, thereby preventing the meter connector 222 from being pulled out of the working position by the meter when the meter is disassembled.

[0144] Specifically, the second partition 150 is installed in the front end cavity 116. The second partition 150 includes a second partition body 151 and a second side plate 156 that are bent and connected together. The second partition body 151 is arranged opposite to the base body 110 along direction d3, that is, the second partition body 151 is arranged opposite to the bottom wall of the front end cavity 116 along direction d3. The external plug-in terminals 259 and the second copper busbars 258 of each of the front end connecting components 252 are all arranged between the second partition body 151 and the base body 110 (specifically the bottom wall of the front end cavity 116). The third partition 160 is installed in the rear end cavity 117.

[0145] Specifically, the third partition 160 includes a third partition body 161 and a third side plate 166 that are bent and connected. The third partition body 161 is arranged opposite to the base body 110 along direction d3, that is, the third partition body 161 is arranged opposite to the bottom wall of the rear end cavity 117 along direction d3. The external plug-in terminal 259 and the second copper busbar 258 of the rear end connection component 253 are both arranged between the third partition body 161 and the base body 110 (specifically the bottom wall of the rear end cavity 117).

[0146] Specifically, the second side plate 156 and the third side plate 166 are both spaced apart from the first side plate 144 along direction d1. The first side plate 144, the second side plate 156, and a pair of side walls spaced apart along direction d2 on the base body 110 together form the inlet switch position 112. The first side plate 144, the third side plate 166, and a pair of side walls spaced apart along direction d2 on the base body 110 together form the outlet switch position 113. The second side plate 147 and the first baffle 148 cooperate with the base body 110 to form the meter position 111.

[0147] like Figure 20As shown, the second partition 150 further includes a second side plate 152 and a second partition cavity 153. The two sets of second side plates 152 are arranged at intervals along direction d2 and are respectively connected to the second partition body 151. The second partition body 151 and the second side plates 152 cooperate to form the second partition cavity 153. In direction d3, one side of the second partition body 151 faces the base body 110 and the second partition cavity 153 is located on the other side of the second partition body 151. Further, the insertion base 100 also includes a first cover plate 170. One end of the first cover plate 170 is rotatably mounted on the two sets of second side plates 152 to cover the second partition cavity 153 and the incoming terminal. The second partition cavity 153 helps to save materials and reduce costs.

[0148] Specifically, the second side plate 152 is provided with a second mounting hole 155; the first cover plate 170 is provided with a first connecting arm 171, and two sets of first connecting arms 171 are arranged at intervals relative to each other along direction d2. The first connecting arm 171 is provided with a first shaft post 172, and the two sets of first shaft posts 172 are respectively rotatably arranged in two sets of second mounting holes 155, so that the first cover plate 170 is rotatably mounted on the two sets of second side plates 152.

[0149] like Figure 33 As shown, the plug-in base 100 further includes a fourth partition 210, which is disposed within the incoming line switch position 112 and fixedly connected to the base body 110. In the direction d1, both ends of the fourth partition 210 are adjacent to the side walls of the first protective cover 149 of the first partition 140 and the second protective cover 154 of the second partition 150, respectively. The fourth partition 210 further improves the insulation performance of the plug-in base 100.

[0150] like Figure 21 As shown, the third partition 160 further includes a third side plate 162 and a third partition cavity 163. Two sets of third side plates 162 are spaced apart along direction d2 and connected to the third partition body 161 respectively. The third partition body 161 and the third side plates 162 cooperate to form the third partition cavity 163. Along direction d3, one side of the third partition body 161 faces the base body 110, and the third partition cavity 163 is located on the other side of the third partition body 161. Further, the insertion base 100 also includes a second cover plate 180. One end of the second cover plate 180 is rotatably mounted on the two sets of third side plates 162 to cover the third partition cavity 163 and the outgoing terminal. The third partition cavity 163 helps to save materials and reduce costs.

[0151] Specifically, the third side plate 162 is provided with a third mounting hole 165; the second cover plate 180 is provided with a second connecting arm 181, and two sets of second connecting arms 181 are arranged at intervals relative to each other along direction d2. The second connecting arm 181 is provided with a second shaft post 182, and the two sets of second shaft posts 182 are respectively rotatably arranged in the two sets of third mounting holes 165, so that the second cover plate 180 is rotatably mounted on the two sets of third side plates 162.

[0152] like Figure 33 As shown, the plug-in base 100 further includes a fifth partition 211, which is disposed within the outgoing switch position 113 and fixedly connected to the base body 110. In the direction d2, both ends of the fifth partition 211 are adjacent to the side wall of the first protective cover 149 of the first partition 140 and the side wall of the third protective cover 164 of the third partition 160, respectively. The fifth partition 210 further improves the insulation performance of the plug-in base 100.

[0153] Specifically, the first partition 140, the second partition 150, the third partition 160, the fourth partition 210, and the fifth partition 211 are fixedly connected to the base body 110 by fixing screws or buckles.

[0154] like Figure 5 and 32 As shown, the plug-in base 100 also includes a third cover plate 190. One end of the third cover plate 190 is rotatably connected to a pair of side walls of the communication module position 114, and is used to cover the communication module position 114. Further, the third cover plate 190 includes a third connecting arm 191, a third cover plate body 192, and a third cover plate buckle 193 connected in sequence. Two sets of third connecting arms 191 are arranged at intervals along direction d2 and are used to be rotatably connected to a pair of side walls of the communication module position 114 respectively. The third cover plate buckle 193 is used to engage with the base body 110.

[0155] In the metering device of this utility model: the inlet switch position 112 and the outlet switch position 113 are collectively referred to as switch positions, that is, the plug-in base 100 is provided with two switch positions, and the switch positions are set one-to-one with the switching electrical appliances. The two switch positions are the inlet switch position 112 and the outlet switch position. The inlet first plug-in terminal, the inlet second plug-in terminal, the outlet first plug-in terminal and the outlet second plug-in terminal are collectively referred to as switch plug-in terminals, that is, all switch plug-in terminals are divided into four equal parts, which are respectively used as the inlet first plug-in terminal, the inlet second plug-in terminal, the outlet first plug-in terminal and the outlet second plug-in terminal. The incoming terminal block of the incoming switch 300, the outgoing terminal block of the incoming switch 300, the incoming terminal block of the outgoing switch 410, and the outgoing terminal block of the outgoing switch 410 are collectively referred to as switch terminal blocks 340; half of the switch terminal blocks 340 of the incoming switch 300 are incoming terminal blocks and the other half are outgoing terminal blocks; half of the switch terminal blocks 340 of the outgoing switch 410 are incoming terminal blocks and the other half are outgoing terminal blocks.

[0156] like Figure 11 , 12 As shown in Figure 24, the switching device (incoming switch 300 or outgoing switch 410) includes a switch housing 301 and at least two switch terminals 340. The number of switch terminals 340 varies depending on the number of phases of the switching device. Of the at least two switch terminals 340, half are used as incoming switch terminals 341 and the other half are used as outgoing switch terminals 342. Each incoming switch terminal 341 and each outgoing switch terminal 342 corresponds to each phase of the switching device. The switch terminals 340 are conductive bar type plug-in terminals or conductive post type plug-in terminals. The switch housing 301 includes a housing body 303 for accommodating the internal circuit structure of the switching device. One end of each switch terminal 340 is inserted into the housing body 303 and electrically connected to the internal circuit structure of the switching device, while the other end protrudes outside the housing body 303 and is used for plugging into and electrically connecting to the plug-in terminals of the external circuit (i.e., the switch plug-in terminals of the plug-in base 100). The terminal enclosure 304 can significantly reduce the probability of the switch terminal 340 being deformed or damaged by impact, thus affecting the normal use of the switch.

[0157] Specifically, each switch terminal 340 is configured in a one-to-one correspondence with a terminal enclosure 304, meaning that each switch terminal 340 is placed within a separate terminal enclosure 304. Alternatively, each switch inlet terminal 341 shares a terminal enclosure 304; and each switch outlet terminal 342 shares a terminal enclosure 304.

[0158] Specifically, the switching device is a two-phase switching device, that is, each switching device includes four switch terminals 340, two of which are switch inlet terminals 341 and the other two are switch outlet terminals 342. The switch inlet terminals 341 are arranged side by side at intervals along direction d2; the switch outlet terminals 342 are arranged side by side at intervals along direction d2.

[0159] Specifically, the terminal enclosure 304 has a U-shaped cross-section perpendicular to direction d3; the openings of the U-shaped structure of the terminal enclosure 304 that mate with the switch inlet terminal 341 and the openings of the U-shaped structure of the terminal enclosure 304 that mate with the switch outlet terminal 342 face opposite directions in direction d1. The terminal enclosure 304 and the housing body 303 are an integral structure.

[0160] As an alternative, the terminal enclosure 304 and the housing body 303 can be detachably assembled together.

[0161] Specifically, the switchgear also includes an operating handle 302 rotatably mounted on the switch housing 301, and an operating mechanism 360, a contact mechanism 310, a short-circuit protection mechanism 320, an arc-extinguishing chamber 330, and an overload protection mechanism 350, all disposed within the switch housing 301. The contact mechanism 310 includes a moving contact 311 and a stationary contact 312 used in conjunction. The operating handle 302, the operating mechanism 360, and the moving contact 311 are sequentially connected. The arc-extinguishing chamber 330 cooperates with the contact mechanism 310 to extinguish the arc generated by the contact mechanism 310. The short-circuit protection mechanism 320 and the overload protection mechanism 350 cooperate with the operating mechanism 360 respectively to drive the operating mechanism 360 to trip in the event of a short-circuit fault and an overload fault, respectively. The contact mechanism 310 is connected in series between an incoming terminal 341 and an outgoing terminal 342. Furthermore, another incoming terminal 341 and another outgoing terminal 342 are directly short-circuited, or another set of contact mechanisms are connected in series between them.

[0162] Specifically, the switch also includes an adjusting screw 370 and an adjusting nut. The adjusting nut is fixedly mounted on the switch housing 301. The adjusting screw 370 is threadedly connected to the adjusting nut, with one end for user operation and the other end engaging with the bimetallic strip of the overload protection mechanism 350.

[0163] In the aforementioned switchgear, all the terminal blocks 304 that mate with the switch inlet terminal 341 form a first block group, and all the terminal blocks 304 that mate with the switch outlet terminal 342 form a second block group. The first and second block groups are non-centrally symmetrical structures, and / or all switch inlet terminals 341 and all switch outlet terminals 342 are non-centrally symmetrical structures. When the switchgear is inserted into the switch position in a reverse connection posture (i.e., the switch inlet terminal 341 is opposite to the switch inlet plug-in terminal of the plug-in base along direction d3, and the switch outlet terminal 342 is opposite to the switch outlet plug-in terminal of the plug-in base along direction d3), the switchgear cannot be installed in place, thereby preventing the switchgear from being reverse-connected.

[0164] like Figure 6 , 11 As shown in Figures 12, 15, 19-22, and 30, the plug-in base 100 also includes a terminal cover. The switch plug-in terminal is placed inside the corresponding terminal cover, and the terminal cover is provided with cover holes that correspond one-to-one with the switch plug-in terminal; the switch wiring terminal 340 passes through the corresponding cover hole and is plugged into the corresponding switch plug-in terminal for electrical connection, and the terminal cover is inserted into the corresponding terminal enclosure 304.

[0165] Specifically, the terminal covers are configured in a one-to-one correspondence with the switch plug terminals, meaning each switch plug terminal is housed within a separate terminal cover. The terminal covers and terminal barriers 304 are configured in a manner that is compatible; if the configuration of one is changed, the other will be adjusted accordingly. The switch plug terminal electrically connected to the switch inlet terminal 341 is the switch inlet plug terminal; the switch plug terminal electrically connected to the switch outlet terminal 342 is the switch outlet plug terminal.

[0166] As an alternative, the plug-in base 100 may not have a terminal cover, and each switch plug-in terminal is directly exposed. The switch wiring terminal 340 is plugged into the switch plug-in terminal for electrical connection, and the switch plug-in terminal is submerged in the corresponding terminal enclosure 304.

[0167] As an alternative, the plug-in base 100 is provided with a switch plug-in terminal cavity, and each switch plug-in terminal is set in the corresponding switch plug-in terminal cavity; the switch wiring terminal 340 is plugged into the switch plug-in terminal, and the terminal guard 304 is inserted into the corresponding switch plug-in terminal cavity.

[0168] Specifically, a portion of the terminal covers are disposed on the first partition body 141 of the first partition 140, a portion of the terminal covers are disposed on the second partition body 151 of the second partition 150, and the remaining terminal covers are disposed on the third partition body 161 of the third partition 160. The terminal cover disposed on the first partition body 141 is the first cover 149, which is used to cooperate with the inner plug-in terminal 234 (the second plug-in terminal for incoming lines and the first plug-in terminal for outgoing lines); the terminal cover disposed on the second partition body 151 is the second cover 154, which is used to cooperate with the first plug-in terminal for incoming lines (i.e., the outer plug-in terminal 259 located in the incoming line switch position 112); the terminal cover disposed on the third partition body 161 is the third cover 164, which is used to cooperate with the second plug-in terminal for outgoing lines (i.e., the outer plug-in terminal 259 located in the outgoing line switch position 113).

[0169] When the switchgear is inserted into the switch position in a reverse connection position, the switch plug-in terminal of the plug-in base 100 is misaligned with the switch wiring terminal 340, and / or the terminal enclosure 340 is misaligned with the terminal cover, thereby ensuring that the switchgear is inserted into the switch position in a positive connection position (i.e., the switch inlet wiring terminal 341 is opposite to the switch inlet plug-in terminal of the plug-in base 100 along direction d3 and the switch outlet wiring terminal 342 is opposite to the switch outlet plug-in terminal of the plug-in base 100 along direction d3) and installed in place.

[0170] Specifically, when the switch is inserted into the switch position in a reverse connection position, the side wall of the switch position and the housing of the switch are matched to limit the movement, causing the switch plug-in terminal of the plug-in base 100 to be misaligned with the switch wiring terminal 340, and / or the terminal enclosure 340 to be misaligned with the terminal cover.

[0171] like Figure 1 , 3 As shown in Figures 4 and 6-15, the plug-in base 100 also includes an energy meter connection device.

[0172] like Figure 1 , 3 As shown in 4, 6-8, 11, 12, and 15, the electricity meter connection device includes each electricity meter connector 222, an expansion mechanism 239 corresponding to the electricity meter plug-in terminal 223, and a push rod 280 that is rotatably arranged with its rotation axis parallel to direction d2.

[0173] The meter connector 222 has a meter plug terminal 223 consisting of at least two elastic plug segments 225 arranged sequentially around an axis parallel to direction d1; the meter connector 222 has a connector cavity 226 in the middle, which extends from the other end of the meter connector 222 to between the elastic plug segments 225.

[0174] Specifically, the meter plug-in terminal 223 is cylindrical in shape and its free end is hemispherical, which facilitates its smooth insertion into the wiring terminal of the electricity meter; the meter plug-in terminal 223 is composed of four elastic plug-in petals 225; the projection direction of the meter plug-in terminal 223 is an orthogonal projection of direction d1 (which is also an orthogonal projection of the axial direction of the meter plug-in terminal 223), and the four elastic plug-in petals 225 form a cross-shaped gap.

[0175] like Figure 11 , 12 As shown, the push rod 280 is configured to switch between a first push rod position and a second push rod position by reciprocating rotation. That is, the push rod 280 has two working positions: a first push rod position and a second push rod position, which it switches between by reciprocating rotation. The expansion mechanism 239 is driven by the push rod 280 and has a contracted position and an expanded position corresponding to the first push rod position and the second push rod position, respectively. Specifically, when the push rod 280 is in the first push rod position, the expansion mechanism 239 is in the contracted position; when the push rod 280 is in the second push rod position, the expansion mechanism 239 is in the expanded position. The expansion mechanism 239 is configured to switch positions in conjunction with the push rod 280. When switched to the expansion position, it drives the elastic plug flap 225 of the corresponding meter plug terminal 223 to open outwards, and when switched to the retracted position, it allows the elastic plug flap 225 of the corresponding meter plug terminal 223 to reset. That is, when the push rod 280 switches from the first push rod position to the second push rod position (or from the second push rod position to the first push rod position), the expansion mechanism 239 switches from the retracted position to the expansion position (or from the expansion position to the retracted position). When the expansion mechanism 239 switches to the expansion position, it drives the elastic plug-in flap 225 of the corresponding meter plug-in terminal 223 to open outward, thereby increasing the contact force between the meter plug-in terminal 223 and the corresponding electricity meter terminal, and ensuring reliable electrical connection between the two; when the expansion mechanism 239 switches to the retracted position, it allows the elastic plug-in flap 225 of the corresponding meter plug-in terminal 223 to reset, thereby reducing the contact force between the meter plug-in terminal 223 and the corresponding electricity meter terminal, and thus reducing the resistance when disassembling the electricity meter.

[0176] Specifically, the expansion mechanism 239 includes an expansion component 227 disposed in the corresponding connecting cavity 226, a top pressure rod 231 slidably disposed and in transmission cooperation with the push rod 280, and a top pressure rod spring 232.

[0177] Specifically, the pressure rod 231 has a first pressure rod position and a second pressure rod position corresponding to the first and second positions of the push rod, respectively. The first and second pressure rod positions also correspond to a contraction position and an expansion position, respectively. The pressure rod 231 is configured to switch positions as the push rod 280 switches positions; that is, when the push rod 280 is in the first position, the pressure rod 231 is in the first pressure rod position; when the push rod 280 is in the second position, the pressure rod 231 is in the second pressure rod position; when the push rod 280 switches from the first to the second position (or vice versa), the pressure rod 231 simultaneously switches from the first to the second position (or vice versa). The pressure rod spring 232 acts on the pressure rod 231, causing it to tend to slide towards the first pressure rod position. The pressure rod 231 is further configured to be driven by the push rod 280 to switch to the second position when the push rod 280 switches to the second position. When sliding to the second position, it drives the expansion component 227 to move, thereby driving the corresponding elastic plug-in petals 225 to open outward, thus increasing the contact force between the meter plug-in terminal 223 and the corresponding electricity meter wiring terminal to ensure reliable conduction between them. That is, when the push rod 280 switches from the first position to the second position, it drives the pressure rod 231 to switch from the first position to the second position. The pressure rod 231 drives the expansion component 227 to move by sliding to the second position, and the expansion component 227 in turn drives each elastic plug-in petal 225 to open outward. The top pressure rod 231 is further configured to be driven by the top pressure rod spring 232 to switch to the top pressure rod first position when the push rod 280 switches to the push rod first position, and to allow the expansion assembly 227 and the elastic insertion flap 225 to reset when sliding to the top pressure rod first position. That is, when the push rod 280 switches from the push rod second position to the push rod second position, it avoids the top pressure rod 231, and the top pressure rod 231 switches from the top pressure rod second position to the top pressure rod first position under the force of the top pressure rod spring 232. The expansion assembly 227 and the elastic insertion flap 225 reset when the top pressure rod 231 switches to the top pressure rod first position.

[0178] The electricity meter connection device has a simple structure, is easy to assemble and operate, ensuring that the electricity meter is reliably connected to the circuit, and is easy to install and remove.

[0179] Specifically, the top pressure rod 231 is linearly slidable. Further, the top pressure rod 231 is slidable along direction d3, with one end engaging with the push rod 280 and the other end engaging with the expansion assembly 227. Further, the first partition body 141 of the first partition 140 has a first main body hole 142, and the top pressure rod 231 is slidably inserted into the corresponding second main body hole 142. Further, the connecting portion 224 of the meter connector 222 has a top pressure rod insertion hole 235, allowing one end of the top pressure rod 231 to pass through and enter the connector cavity 226 to engage with the expansion assembly 227.

[0180] Specifically, the top pressure rod spring 232 is a linear compression spring, sleeved on the corresponding top pressure rod 231, with one end engaging with the top pressure rod 231 and the other end fixedly positioned between the corresponding meter connector 222 and the push rod 280. Further, one end of the top pressure rod spring 232 engages with the top pressure rod 231, and the other end abuts against the insertion base 100 (specifically, the first partition 140 of the insertion base 100).

[0181] Specifically, the push rod 280 includes a push rod trunk 281 and a push rod handle 282 and a first drive unit 283 respectively disposed on the push rod trunk 281 and rotating synchronously therewith. The push rod 280 is rotatably disposed via the push rod trunk 281. The push rod handle 282 is used to drive the push rod 280 to rotate under external force. The first drive unit 283 includes a first drive surface disposed around the push rod trunk 281, and the first drive surface always maintains contact with the top pressure rod 231. Further, the first drive surface is a continuous curved surface or is composed of multiple planes that are bent and connected in sequence, or is composed of a combination of planes and curved surfaces. The specific form of the first drive surface can be set by those skilled in the art and according to actual needs, as long as it can drive the top pressure rod 231 to slide to the top pressure rod second position when the push rod 280 rotates to the push rod second position, and allow the top pressure rod 231 to return to the top pressure rod first position under the action of the top pressure rod spring 232 when the push rod 280 rotates to the push rod first position. Furthermore, the base body 110 includes a pair of main body sidewalls arranged side by side and spaced apart along direction d2; the two ends of the push rod main body 281 are respectively rotatably mounted on the two main body sidewalls.

[0182] As an alternative to the rotating arrangement of the push rod main body 281, both ends of the push rod main body 281 are respectively rotatably mounted on the first partition plate 140 of the plug-in base 100.

[0183] As an alternative implementation of the transmission cooperation between the push rod 280 and the top pressure rod 231, the push rod 280 and the top pressure rod 231 are connected in a transmission manner.

[0184] Specifically, the inner side of the free end of the elastic plug-in flap 225 is provided with a plug-in flap receiving surface 2251. The expansion assembly 227 includes a mating part 228 that is driven to cooperate with the top pressure rod 231, a transmission spring 229, and an expansion part 230 that is driven to cooperate with the corresponding plug-in flap receiving surface 2251. The two ends of the transmission spring 229 are respectively engaged with the mating part 228 and the expansion part 230. The top pressure rod 231 is configured to drive the mating part 228 to slide along direction d1 and compress the transmission spring 229 when sliding to the second position of the top pressure rod; the mating part 228 is configured to apply a force to the expansion part 230 through the transmission spring 229, so that the expansion part 230 presses against the plug-in flap receiving surface 2251, so that the free ends of each elastic plug-in flap 225 open outward. That is, during operation, the top pressure rod 231 slides to the second position of the top pressure rod, which drives the mating part 228 to slide along direction d1. The mating part 228 compresses the transmission spring 229 and applies a force to the expansion part 230 through the transmission spring 229, so that the expansion part 230 presses against the moving surface 2251 of the plug-in plate, so that the free ends of each elastic plug-in plate 2251 open outward.

[0185] Specifically, the mating part 228 is a sphere; the end of the top pressure rod 231 that mates with the mating part 228 is a hemispherical structure.

[0186] Specifically, the expansion member 230 is a sphere; the movable surface 2251 of the insertion flap is an inclined surface.

[0187] Specifically, the two ends of the transmission compression spring 229 abut against the mating part 228 and the expansion part 230, respectively.

[0188] As an alternative to the expansion assembly 227, the expansion assembly 227 includes an expansion rod and a tension spring. One end of the expansion rod is a hemispherical structure for transmission engagement with the driven surface 2251 of the insertion flap. The other end of the expansion rod is connected to the tension spring. The expansion rod has a mating inclined surface in the middle for transmission engagement with the top pressure rod 231. During operation, the top pressure rod 231 slides to the second position of the top pressure rod, driving the expansion rod to slide along direction d1. The expansion rod drives each elastic insertion flap 225 to open outward, and the tension spring stores energy. The top pressure rod 231 slides to the first position of the top pressure rod to avoid the expansion rod, and the tension spring drives the expansion rod to reset, and the elastic insertion flaps 225 reset.

[0189] like Figure 1 , 3 As shown in 4, 6, 7, 9, 13-15, the electricity meter connection device further includes a short-circuiting device, which includes a short-circuiting mechanism 240 that is configured to correspond one-to-one with each phase of the electricity meter.

[0190] The short-circuiting mechanism 240 is configured to switch between a short-circuiting position and a disconnected position by movement. In the short-circuiting position, it short-circuits the two meter connectors 222 used for electrical connection to the same phase of the energy meter, thereby enabling uninterrupted replacement and maintenance of the energy meter. In the disconnected position, it disconnects from at least one meter connector 222 of the corresponding phase, allowing the energy meter to be reconnected to the circuit after installation—that is, after the meter connectors 222 are reconnected to the energy meter's terminals. Specifically, the short-circuiting mechanism 240 has two working positions: a short-circuiting position and a disconnected position, which can be switched between by movement. In the short-circuiting position, it short-circuits the two meter connectors 222 of the same phase, and the two meter connectors 222 are used for electrical connection to the two terminals of the same phase of the energy meter, respectively. In the disconnected position, it can disconnect from only one of the two corresponding meter connectors 222, or it can disconnect from both corresponding meter connectors 222.

[0191] Specifically, when the short-circuiting mechanism 240 is in the disengaged position, it is separated from the corresponding two meter connectors 222.

[0192] like Figure 13 , 14As shown, the short-connection mechanism 240 includes a transmission rod 241 that is slidably disposed and in transmission cooperation with the push rod 280, and a short-connector 242 disposed on the transmission rod 241. The transmission rod 241 has a first position and a second position corresponding to the first position and the second position of the push rod, respectively. The first position and the second position also correspond to a short-connection position and a separation position, respectively. The transmission rod 241 is configured to switch positions as the push rod 280 switches positions, and the short-connection mechanism 240 is configured to switch positions as the transmission rod 241 switches positions. That is, when the push rod 280 is in the first position, the transmission rod 241 is in the first position; when the push rod 280 is in the second position, the transmission rod 241 is in the second position; when the push rod 280 switches from the first position to the second position (or switches from the second position to the first position), the transmission rod 241 simultaneously switches from the first position to the second position (or switches from the second position to the first position); when the transmission rod 241 is in the first position (or the second position), the short-circuit mechanism 240 is in the short-circuit position (or the disengaged position); when the transmission rod 241 switches from the first position to the second position (or switches from the second position to the first position), the short-circuit mechanism 240 switches from the short-circuit position to the disengaged position (or switches from the disengaged position to the short-circuit position). Furthermore, the transmission rod 241 is configured to switch to the first position of the transmission rod when the push rod 280 switches to the first position of the push rod, and to switch to the second position of the transmission rod when the push rod 280 switches to the second position of the push rod.

[0193] The electricity meter connection device achieves the following technical effects:

[0194] When the push rod 280 switches to the second position, the expansion mechanism 239 is activated, causing the elastic plug-in plates 225 of the meter plug-in terminal 223 to open outwards, while simultaneously disengaging the short-circuiting mechanism 240 from the meter connector. When the push rod 280 switches to the first position, the expansion mechanism 239 and the elastic plug-in plates 225 of the meter plug-in terminal 233 are reset, and the short-circuiting mechanism 240 makes contact with the corresponding meter connector 222. In the electricity meter connection device, the push rod 280 cooperates with both the expansion mechanism 239 and the short-circuiting mechanism 240. In the first position, the push rod 280 ensures a reliable connection between the meter connector 222 and the electricity meter. In the second position, the push rod 280 facilitates meter disassembly without power interruption, achieving two goals at once, reducing the number of parts and simplifying operation.

[0195] Specifically, the short-circuit mechanism 240 also includes a transmission rod spring 243, which acts on the transmission rod 241 to make it tend to slide towards the first position of the transmission rod; that is, the transmission rod 241 slides from the first position to the second position under the drive of the push rod 280, and the transmission rod 241 causes the transmission rod spring 243 to store energy. When the push rod 280 switches from the second position to the first position, it avoids the transmission rod 241, and the transmission rod spring 243 releases energy and drives the transmission rod 241 to slide from the second position to the first position. Moreover, the transmission rod spring 243 applies a force to the short-circuit member 242 through the transmission rod 241, so that the short-circuit member 242 presses against the corresponding meter connector 222 to ensure reliable conduction between the two. When the transmission rod 241 is in the first position, the shorting member 242 is in contact with the corresponding two meter connectors 222 and conducts electricity; when the transmission rod 241 is in the second position, the shorting member 242 is separated from the meter connectors 222.

[0196] Specifically, the transmission rod 241 is slidably disposed along direction d3. Further, the first partition body 141 of the first partition 140 is provided with a second main body hole 143, and the transmission rod 241 is slidably inserted into the corresponding second main body hole 143. Along direction d2, a first main body hole 142 is provided on each side of each second main body hole 143.

[0197] Specifically, the push rod 280 further includes a second driving part 284 disposed on the push rod main body 281 and rotating synchronously therewith; the second driving part 284 includes a second driving surface disposed around the push rod main body 281, and the second driving surface always maintains contact with the transmission rod 241. Further, the second driving surface is a continuous curved surface, or composed of multiple sequentially bent and connected planes, or a combination of planes and curved surfaces. The specific form of the first driving surface can be set by those skilled in the art and according to actual needs, as long as it can drive the transmission rod 241 to slide to the second position when the push rod 280 rotates to the second position, and allow the transmission rod 241 to return to the first position under the action of the transmission rod spring 243 when the push rod 280 rotates to the first position. Further, the transmission rod spring 243 is a compression spring; one end of the transmission rod 241 abuts and engages with the push rod 280, and the other end engages with the transmission rod spring 243, with the other end of the transmission rod spring 243 fixedly disposed. Furthermore, one end of the transmission rod spring 243 is sleeved on the transmission rod spring post at one end of the transmission rod 241, and the other end is engaged with the insertion base 100 (specifically, the base body 110 of the insertion base 100).

[0198] As an alternative implementation of the transmission cooperation between the push rod 280 and the transmission rod 241, the push rod 280 and the transmission rod 241 are connected in a transmission manner, and a shorting spring is provided between the shorting member 242 and the transmission rod 241. When the shorting mechanism 240 is in the shorting position, the shorting member 242 makes contact with the corresponding meter connector 222, causing the shorting spring to store energy, thereby achieving soft contact between the shorting member 242 and the meter connector 222. By utilizing the release tendency of the potential energy stored in the spring, contact pressure is provided to the shorting member 242, ensuring sufficient contact force between the shorting member 242 and the meter connector 222 to ensure reliable conduction between the two. When the shorting mechanism 240 is in the disengaged position, the shorting spring limits the shorting member 242 and the transmission rod 241.

[0199] Specifically, the shorting member 242 is a shorting plate, and its plane is perpendicular to direction d3 and parallel to directions d1 and d2; the connecting portion 224 of the meter connector 222 is a polygonal prism structure, and one side of the polygonal prism structure is perpendicular to direction d3 and parallel to directions d1 and d2, and this side is used to make contact and conduct electricity with the shorting member 242. Further, the connecting portion 224 is a regular square prism structure.

[0200] like Figure 5 , 16 As shown, the electricity meter connection device also includes a short-circuit sensor (not shown) and a current sampling element 710, both connected to the circuit board assembly 130. The current sampling element 710 is coupled to the electricity meter connector 222 and is used to sample the current flowing through the electricity meter connector 222; the specific coupling method between the current sampling element 710 and the electricity meter connector 222 will be described later. The short-circuit sensor is driven by the short-circuit device.

[0201] The short-circuit sensor is configured to switch its operating state when the short-circuit mechanism 240 switches its operating position; when the short-circuit mechanism 240 switches to the short-circuit position, it triggers the circuit board assembly 130 to start energy metering through the current sampling element 710; and when the short-circuit mechanism 240 switches to the disconnect position, it triggers the circuit board assembly 130 to stop energy metering through the current sampling element 710. That is, the short-circuit sensor has two operating states: a first state and a second state, corresponding to the disconnect position and the short-circuit position, respectively. When the short-circuit mechanism 240 switches from the disconnect position to the short-circuit position (or from the short-circuit position to the disconnect position), the short-circuit sensor switches from the first state to the second state (or from the second state to the first state). When the short-circuit mechanism 240 switches to the short-circuit position, the short-circuit sensor switches to the second state and triggers the circuit board assembly 130, which then starts metering energy through the current sampling element 710. In other words, after the energy meter is short-circuited, the circuit board assembly 130 starts metering energy through the current sampling element 710. When the short-circuit mechanism 240 is switched to the disconnect position, the short-circuit sensor switches to the first state and triggers the circuit board assembly 130. The circuit board assembly 130 stops measuring electrical energy through the current sampling element 71. That is, after the energy meter is reconnected to the circuit, the circuit board assembly 130 stops measuring electrical energy through the current sampling element 710.

[0202] The circuit board assembly 130 is also used to connect to the electricity meter to realize the automatic statistics of the electricity meter's electricity metering data and the electricity metering data completed by the current sampling element 710.

[0203] As an alternative, the circuit board assembly 130 is not connected to the electricity meter. Instead, the circuit board assembly 130 and the electricity meter are respectively connected to a host computer. The host computer performs statistics on the electricity metering data and the electricity metering data completed by the circuit board assembly 130 through the current sampling element 710.

[0204] The short-circuiting device, short-circuiting sensor, circuit board assembly 130, and current sampling element 710 work together to achieve seamless integration of electricity metering. When the electricity meter is working normally, it measures the electricity. When the electricity meter is short-circuited due to replacement or maintenance, the circuit board assembly 130 measures the electricity through the current sampling element 710, thus ensuring the accuracy of the electricity metering results, avoiding economic losses, and preventing and promptly detecting unauthorized personnel short-circuiting the electricity meter for electricity theft. The circuit board assembly 130 can also collect current parameters in real time through the current sampling element 710, thereby achieving real-time monitoring of the circuit. The meter connector 222 is plugged into the electricity meter's terminals for quick installation and removal of the electricity meter.

[0205] Specifically, the short-circuit sensor is a micro switch. The short-circuit sensor is driven by a set of short-circuit mechanisms 240 of the short-circuit device, which are short-circuit detection mechanisms. When the short-circuit detection mechanism is in the disengaged position, its transmission rod 241 is separated from the micro switch, causing the circuit board assembly 130 to stop passing through the current sampling element 710 to measure electrical energy. When the short-circuit detection mechanism is in the short-circuit position, its transmission rod 241 presses against the drive rod of the micro switch, causing the circuit board assembly 130 to start passing through the current sampling element 710 to measure electrical energy.

[0206] As an alternative implementation of the short-circuit sensor, the short-circuit sensor is a spring switch; the spring switch includes a set of moving contacts and a set of stationary contacts or a set of moving contacts and two sets of stationary contacts, and the moving contacts are in transmission cooperation with the transmission rod 241 of the short-circuit detection mechanism.

[0207] As an alternative implementation of the cooperation between the short-circuit sensor and the short-circuit device, the short-circuit device also includes a linkage structure. The linkage structure is connected to the transmission rod 241 of each short-circuit mechanism 240 and cooperates with the push rod 280. The linkage structure also cooperates with the short-circuit sensor. When the push rod 280 drives each short-circuit mechanism 240 to switch positions through the linkage structure, the linkage structure causes the short-circuit sensor to change its working state.

[0208] like Figure 30 , 31 As shown, the plug-in base 100 also includes a meter positioning detection mechanism 720 for detecting that the electricity meter is installed in place. The meter positioning detection mechanism 720 outputs a signal indicating that the electricity meter has been installed in place when the electricity meter is installed in the meter position 111 and in place.

[0209] The meter positioning detection mechanism 720 includes a first detection rod 721 and a first detection element (not shown in the figure), both disposed on the insertion base 100, and a first detection rod spring 727. The first detection rod 721 is used to drive the energy meter and has a first detection rod position and a second detection rod position. The first detection rod 721 is configured to be driven by the energy meter installed in the meter position 111 to move from the first detection rod position to the second detection rod position, so as to trigger the first detection element to emit a signal indicating that the energy meter has been installed in place; that is, during operation, during the process of the energy meter being installed in the meter position 111 and in place, the first detection rod 721 is driven to move from the first detection rod position to the second detection rod position, and the first detection rod 721 triggers the first detection element to emit a signal indicating that the energy meter has been installed in place. The first detection rod spring 727 acts on the first detection rod 721, causing it to tend to move towards the first detection rod position; that is, when the first detection rod 721 is in a free state—that is, when the first detection rod 721 is not subjected to the force of the energy meter—the force applied by the first detection rod spring 727 to the first detection rod 721 causes the first detection rod 721 to move to the first detection rod position. The first detection element is connected to the circuit board assembly 130 of the plug-in base 100, enabling online remote monitoring of whether the energy meter is installed correctly.

[0210] The meter placement detection mechanism 720 has a simple structure and can accurately detect whether the electricity meter is installed in place in real time, ensuring the reliable installation and operation of the electricity meter.

[0211] Specifically, the first detection rod 721 is linearly slidable along direction d1 on the plug-in base 100. The first detection rod 721 has a simple and reliable operation, reducing the installation and working space required for the meter positioning detection mechanism 720.

[0212] As an alternative to the movement mode of the first detection rod 721, the first detection rod 721 is rotatably mounted on the insertion base 100, or the first detection rod 721 is slidably mounted on the insertion base 100 and the sliding trajectory of the first detection rod 721 is a curve.

[0213] Specifically, the first detection rod 721 also includes a first detection rod driven end 722 protruding from the meter position 111. The first detection rod driven end 722 is used to be pressed by the electricity meter to drive the first detection rod 721 from the first detection rod position to the second detection rod position. That is, during the process of the electricity meter being installed in the meter position 111 until it is in place, the first detection rod driven end 722 is pressed, and the first detection rod driven end 722 drives the first detection rod 721 from the first detection rod position to the second detection rod position, thereby triggering the first detection element to output a signal indicating that the electricity meter has been installed in place. Furthermore, the first detection rod 721 also includes a first detection rod body 723 and a first detection rod triggering part 726. The first detection rod driven end 722 and the first detection rod triggering part 726 are respectively connected to both ends of the first detection rod body 723. The first detection rod triggering part 726 is used to trigger the first detection element. The first detection rod body 723 is provided with a first detection rod cavity 725. The first detection rod spring 727 is a compression spring. At least a portion of the first detection rod spring 727 is inside the first detection rod cavity 725 and cooperates with the first detection rod 721, and the other end cooperates with the insertion base 100. Furthermore, the first detection rod cavity 725 is a blind hole structure. One end of the first detection rod spring 727 is inserted into the first detection rod cavity 725 and abuts against the bottom of the first detection rod cavity 725, and the other end protrudes from the outside of the first detection rod cavity 725 and cooperates with the base body 110 of the insertion base 100. Furthermore, the first detection rod trigger part 726 is bent and connected to the first detection rod body 723, and the first detection rod trigger part 726 and the first detection rod body 723 are integrally formed into an L-shaped structure.

[0214] As an alternative to the first detection rod spring 727, the first detection rod spring 727 can be a tension spring or a torsion spring. Those skilled in the art can use conventional technical means in the art to adjust the cooperation between the first detection rod spring 727 and the first detection rod 721, which will not be described in detail here.

[0215] Specifically, the insertion base 100 is provided with a first mounting cavity 123 in which the first detection rod body 723 is slidably inserted. One end of the first mounting cavity 123 is provided with a first sliding hole, and the end of the first detection rod body 723 connected to the driven end 722 of the first detection rod is slidably inserted into the first sliding hole 124. Further, the first detection rod 721 also includes a first detection rod limiting portion 724 disposed on the outer surface of the first detection rod body 723; the first detection rod spring 727 acts on the first detection rod 721 to limit the first detection rod limiting portion 724 in a limiting engagement with the portion of the insertion base 100 located radially outward of the first sliding hole 124, thus holding the first detection rod 721 in the first detection rod position. Further, the first detection rod limiting portion 724 is an annular platform disposed on the outer surface of the first detection rod body 723.

[0216] Specifically, the first mounting cavity 123 is formed by the first partition 140 and the base body 110. Further, the base terminal limiting plate 118 of the base body 110 is provided with a first sliding hole 124. Further, the first sliding hole 124 is a U-shaped notch provided on the base terminal limiting plate 118, and the first partition 140 limits and holds the first detection rod body 723 within the first sliding hole 124.

[0217] Specifically, the first detection element is a micro switch or a photoelectric position sensor. The working principle of the first detection element is existing technology and will not be described further here. The first detection element is fixedly mounted on the circuit board assembly 130.

[0218] like Figures 30-31As shown, the plug-in base 100 further includes a switch position detection mechanism 730 for detecting when the switch is installed in place. The switch position detection mechanism 730 outputs a signal indicating that the switch is installed in place when the switch is installed in the switch position. Further, the switch position detection mechanism 730 includes a second detection rod 731, a second detection rod spring, and a second detection element. The second detection rod 731 is used for transmission cooperation with the switch and has a third detection rod position and a fourth detection rod position. The second detection rod spring acts on the second detection rod 731, causing it to tend to move towards the third detection rod position; that is, when the second detection rod 731 is in a free state—when the second detection rod 731 is not subjected to the force of the switch—the force of the second detection rod spring on the second detection rod 731 causes it to move to the third detection rod position. The second detection rod 731 is configured to move from the third detection rod position to the fourth detection rod position when driven by the switch appliance being installed in the switch position, thereby triggering the second detection element to output a signal indicating that the switch appliance has been installed in place. That is, during operation, as the switch appliance is installed in the switch position, the second detection rod 731 is driven to move from the third detection rod position to the fourth detection rod position, triggering the second detection element to output a signal indicating that the switch appliance has been installed in place. The second detection element is connected to the circuit board assembly 130 of the plug-in base 100. Further, the plug-in base 100 also includes a detection rod baffle fixedly connected to the base body 110; the base body 110 has a second sliding hole 125, in which the second detection rod 731 is slidably inserted; one end of the second detection rod 731 passes through the detection rod baffle and engages with the corresponding switch appliance; when the second detection rod 731 is in the third detection rod position, it engages with the detection rod baffle to prevent the second detection rod 731 from dislodging from the second sliding hole 125.

[0219] Specifically, there are two sets of switch position detection mechanisms 730, which cooperate with the incoming switch 300 and the outgoing switch device 400, respectively. The switch position detection mechanism 730 is located on one side of the circuit board assembly 130 in direction d3. The fourth partition 210 and the fifth partition 211 serve as detection rod baffles that cooperate with the second detection rod 731 of the two sets of position detection mechanisms 730, respectively.

[0220] Specifically, the second detection rod 731 is linearly slidable on the insertion base 100 along direction d3. As an alternative to the movement of the second detection rod 731, the second detection rod 731 is rotated, or the second detection rod 731 is slidable with a curved sliding trajectory.

[0221] Specifically, the second detection rod spring is a compression spring, a tension spring, or a torsion spring.

[0222] Specifically, the second detection rod 731 includes a second detection rod driven end 732, a second detection rod body 733, and a second detection rod triggering part 734 connected in sequence. The second detection rod driven end 732 protrudes from the switch position and is used for transmission cooperation with the switch electrical appliance. The second detection rod triggering part 734 is used to trigger the second detection element. Further, the second detection rod 731 also includes a second detection rod limiting part 735, which is disposed on the outer surface of the second detection rod body 733. The second sliding hole 125 of the base body 110 includes a sliding hole head section 126 and a sliding hole tail section 127 connected in sequence and communicating with each other. The diameter of the sliding hole head section 126 is larger than the diameter of the sliding hole tail section 127. The connection between the sliding hole head section 126 and the sliding hole tail section 127 forms a limiting platform. The switch position and the sliding hole head section... 126 and the sliding hole tail section 127 are connected in sequence. The outer diameter of the second detection rod body 733 is adapted to the diameter of the sliding hole tail section 127. The second detection rod limiting part 735 is located in the sliding hole head section 126 and is limited and cooperates with the limiting platform. The detection rod baffle is provided with a detection rod through hole. The second detection rod driven end 732 protrudes into the switch position through the detection rod through hole. The diameter of the detection rod through hole is adapted to the outer diameter of the second detection rod driven end 732 and is smaller than the outer diameter of the second detection rod limiting part 735. Furthermore, the second detection rod driven end 732, the second detection rod body 733 and the second detection rod trigger part 734 are integrally formed into a columnar structure.

[0223] Specifically, the second detection element is a micro switch or a photoelectric position sensor. The working principle of the second detection element is existing technology in this field and will not be described in detail here. The second detection element is fixedly mounted on the circuit board assembly 130.

[0224] like Figure 22 , 25 As shown in -29, this application also discloses a switching device, which includes a switching device and a drive module 460. The drive module 460 is used to control the switching device to automatically open and close.

[0225] Specifically, the switching device is an outgoing line switching device, and the switching appliance is an outgoing line switch 410. It should be noted that the switching device can be applied not only to the metering device of this application, but also to other electrical scenarios that require closing and opening circuits; in this embodiment, a drive module 460 that cooperates with the outgoing line switch 300 can also be provided according to actual needs.

[0226] like Figure 25 , 26As shown in Figure 29, the drive module 460 includes a module housing 476 and an electric operating mechanism 475 disposed within the module housing 476. The electric operating mechanism 475 includes a motor 473, a gear set 467, and a linkage handle 463, which are sequentially coupled. The linkage handle 463 is coaxially linked with the operating handle 302 of the outgoing switch 410, meaning that the linkage handle 463 and the operating handle 302 rotate synchronously. The gear set 467 includes a linkage gear 4675 coaxially configured with the linkage handle 463. The linkage gear 4675 has three positions: gear engaged, gear initial, and gear disengaged. The linkage gear 4675 switches between these three working positions through reciprocating rotation.

[0227] The linkage gear 4675 is configured as follows:

[0228] When the gear is in its initial position, during the process of the operating handle 302 rotating to drive the outgoing line switch 410 to close and open, the linkage gear 4675 remains stationary; that is, when the linkage gear 4675 is in the initial position, the operating handle 302 is rotated by an operating force other than the drive module 460 (such as the user's manual operating force), and during the process of driving the outgoing line switch 410 to close and open, the linkage gear 4675 remains stationary and will not interfere with the operation of the operating handle 302.

[0229] During the rotation of the gear from its initial position to the gear closing or gear opening position, the linkage handle 463 drives the operating handle 302 to rotate, thereby driving the switchgear to close or open. That is, during the rotation of the linkage gear 4675 from its initial position to the gear closing position, it drives the linkage handle 463 to rotate, which in turn drives the operating handle 302 to rotate, thus driving the switchgear to close. During the rotation of the linkage gear 4675 from its initial position to the gear opening position, it drives the linkage handle 463 to rotate, which in turn drives the operating handle 302 to rotate, thus driving the switchgear to open.

[0230] After reaching the gear closing position or the gear opening position, the linkage gear 4675 automatically rotates back to the initial gear position. That is, when the linkage gear 4675 rotates from the initial gear position to the gear closing position in the gear closing direction to drive the switch to close, after the linkage gear 4675 reaches the gear closing position and drives the switch to close, the linkage gear 4675 automatically rotates back to the initial gear position in the gear opening direction. The gear closing direction and the gear opening direction are opposite to each other. When the linkage gear 4675 rotates from the initial gear position to the gear opening position in the gear opening direction to drive the switch to open, after the linkage gear 4675 reaches the gear opening position and drives the switch to open, the linkage gear 4675 automatically rotates back to the initial gear position in the gear closing direction.

[0231] In the aforementioned switching device, the drive module 460 realizes automatic opening and closing control of the switching device without affecting the manual opening and closing operation of the switching device, fully meeting the operational needs of various scenarios (such as remote opening and closing control, on-site opening and closing control, etc.).

[0232] Specifically, the rotational axes of the linkage handle 463, operating handle 302, and linkage gear 4675 are all parallel to direction d2. The rotational axes of each gear in the gear set 467 are all parallel to direction d2. The axis of the motor 473 is parallel to direction d1. The motor 473 and the gear set 467 are preferably connected by a worm gear-worm shaft transmission mechanism.

[0233] Specifically, the gear set 467 includes at least two gears that mesh sequentially. Further, the gear set 467 includes a first gear 4671, a second gear 4672, a third gear 4673, a fourth gear 4674, and a linkage gear 4675 that are sequentially engaged in transmission. The first gear 4671 includes a worm gear, and the output shaft of the motor 473 is equipped with a worm.

[0234] like Figure 27 As shown, the electric operating mechanism 475 also includes an initial micro switch 470, a closing micro switch 471, and a closing micro switch 472 arranged sequentially around the rotation axis of the linkage gear 4675.

[0235] The linkage gear 4675 is configured as follows:

[0236] When the gear reaches its initial position, the initial micro switch 470 is triggered to de-energize the motor 473, thereby causing the linkage gear 4675 to lose the power to rotate and stop at the initial position.

[0237] When the gear reaches the gear closing position, the closing micro switch 471 is triggered, causing the motor 473 to change its rotation direction and drive the linkage gear 4675 to rotate towards the gear initial position. That is, when the motor 473 drives the linkage gear 4675 to rotate in the gear closing direction to drive the switchgear to close, after the linkage gear 4675 reaches the gear closing position and the switchgear is closed, the linkage gear 4675 triggers the closing micro switch 471 to change the rotation direction of the motor 473, and the motor 473 drives the linkage gear 4675 to rotate in the gear opening direction towards the gear initial position.

[0238] When the gear reaches the open position, the open micro switch 472 is triggered, causing the motor 473 to change its rotation direction and drive the linkage gear 4675 to rotate towards the gear close position. That is, when the motor 473 drives the linkage gear 4675 to rotate in the gear open direction to drive the switchgear to open, after the linkage gear 4675 presses against the gear open position and causes the switchgear to open, the linkage gear 4675 triggers the open micro switch 472 to change the rotation direction of the motor 473, and the motor 473 drives the linkage gear 4675 to rotate in the gear close direction towards the initial gear position.

[0239] As an alternative to the control method of the linkage gear 4675, the electric operating mechanism 475 does not have a closing micro switch 471 and / or a opening micro switch 472. Instead, after the electric operating mechanism 475 drives the switch to close or open, the circuit board assembly 130 monitors the power supply or power failure of the switch and controls the motor 473 to change the direction of rotation.

[0240] As an alternative to the control method of the linkage gear 4675, the electric operating mechanism 475 does not have an initial micro switch 470, a closing micro switch 471, and a opening micro switch 472. Instead, the rotation of the motor 473 is controlled entirely by a computer program.

[0241] As an alternative to the control method of the linkage gear 4675, the initial micro switch 470, the closing micro switch 471 and the opening micro switch 472 are replaced with three photoelectric position sensors.

[0242] Specifically, the linkage gear 4675 includes a position control block 4677 disposed on one side of its axial direction. The position control block 4677 is used to trigger the initial micro switch 470, the closing micro switch 471, and the opening micro switch, respectively. Further, the linkage gear 4675 and the position control block 4677 are either integral or separate structures. When the linkage gear 4675 reaches the initial gear position, the gear closing position, and the gear opening position, respectively, it triggers the initial micro switch 470, the closing micro switch 471, and the opening micro switch 472.

[0243] Specifically, on the axial direction of the secondary linkage gear 4675, the linkage gear 463 is located on one side of the linkage gear 4675, and the initial micro switch 470, the closing micro switch 471, and the opening micro switch 472 are located on the other side of the linkage gear 4675.

[0244] like Figure 27As shown, the linkage gear 4675 includes a closing / opening drive block 4676. The linkage handle 463 includes a closing actuator 4636 and an opening actuator 4637. The closing / opening drive block 4676 is located between the closing actuator 4636 and the opening actuator 4637 in the rotation direction of the linkage handle 463. The closing / opening drive block 4676 drives the linkage handle 463 to rotate through the closing actuator 4636, thereby driving the switchgear to close; that is, when the linkage gear 4675 rotates towards the gear closing position along the gear closing direction, it drives the closing / opening drive block 4676 to rotate synchronously. The closing / opening drive block 4676 presses against the closing actuator 4636, thereby driving the linkage handle 463 to rotate and closing the switchgear. The opening and closing drive block 4676 drives the linkage handle 463 to rotate through the opening driven part 4637, thereby driving the switchgear to open; that is, when the linkage gear 4675 rotates towards the gear opening position along the gear opening direction, it drives the opening and closing drive block 4676 to rotate synchronously. The opening and closing drive block 4676 presses against the opening driven part 4637 and drives the linkage handle 463 to rotate, thereby opening the switchgear. When the linkage gear 4675 is in its initial position and the switchgear is in the open state, the opening and closing drive block 4676 is spaced apart from the closing driven part 4636 and the opening drive part 4637. That is, when the linkage gear 4675 is in its initial position and the switchgear is in the open state, the opening and closing drive block 4676 is provided with a closing idle stroke and an opening idle stroke respectively between it and the closing driven part 4636 and the opening drive part 4637. Thus, when the operating handle 302 is driven to rotate by an operating force other than the electric slot assembly mechanism 375, the linkage gear 4675 will not interfere with the rotation of the operating handle 302.

[0245] Specifically, the opening and closing drive block 4676 is disposed on the axial side of the linkage gear 4675 facing the linkage handle 463; the closing driven part 4636 and the opening driven part 4637 are both disposed on the axial side of the linkage handle 463 facing the linkage gear 4675. Further, the linkage handle 463 includes an opening and closing driven part 4635 disposed on its axial side facing the linkage gear 467; the two ends of the opening and closing driven part 4635 in the rotation direction of the linkage handle 463 are the closing driven part 4636 and the opening driven part 4637, respectively. The closing / opening drive block 4676 has a closing drive surface 4678 and an opening drive surface 4679 at its two ends in the rotation direction of the linkage gear 467. The closing drive surface 4678 abuts against the closing driven part 4636 to drive the linkage handle 463 to rotate and drive the switchgear to close. The opening drive surface 4679 abuts against the opening driven part 4637 to drive the linkage handle 463 to rotate and drive the switchgear to open. Furthermore, the cross-section of the closing / opening driven part 4635 perpendicular to the axis of the linkage handle 463 is a folding fan-shaped structure, with its center coinciding with the rotation axis of the linkage handle 463. Similarly, the cross-section of the closing / opening drive block 4676 perpendicular to the axis of the linkage gear 467 is a folding fan-shaped structure, with its center coinciding with the rotation axis of the linkage gear 467. Furthermore, the closing / opening driven part 4635 has a cavity in the middle, which helps reduce the amount of material used in the linkage handle 463 and lowers costs.

[0246] As an alternative to the transmission method of the linkage gear 467 and linkage handle 463, the closing driven part 4636 and the opening driven part 4637 are two independently set protrusions.

[0247] As an alternative to the transmission method of the linkage gear 467 and the linkage handle 463, the linkage handle 463 is provided with a handle transmission groove on the axial side facing the linkage gear 467, and the opening and closing drive block 4676 is provided in the handle transmission groove. The two ends of the manual handle transmission groove in the rotation direction of the linkage handle 463 serve as the closing driven part 4636 and the opening driven part 4637, respectively.

[0248] It should be noted that those skilled in the art can also make various modifications to the transmission methods of the linkage gear 467 and linkage handle 463 using conventional technical means in the field, all of which should fall within the protection scope of this application, and will not be listed here one by one.

[0249] like Figure 25 , 26As shown in Figure 28, the linkage handle 463 further includes a closing positioning part 4633 and a opening positioning part 4632. The module housing 476 includes a closing limit part 4663 and an opening limit part 4662. The linkage handle 463 has two working positions corresponding to the closing state and the opening state of the switchgear, respectively, namely the handle closing position and the handle opening position. When the linkage handle 463 is rotated to the closed position, the closed positioning part 4633 and the closed limiting part 4663 cooperate to stop the linkage handle 463 in the closed position; when the linkage handle 463 is rotated to the open position, the open positioning part 4632 and the open limiting part 4662 cooperate to stop the linkage handle 463 in the open position; the cooperation of the closed positioning part 4633, the open positioning part 4632, the closed limiting part 4663, and the open limiting part 4662 prevents the linkage handle 463 from being over-rotated under the drive of the electric operating mechanism 475, which could damage the operating mechanism of the switchgear.

[0250] Specifically, the linkage handle 463 further includes a handle positioning part 4631, with the two ends of the handle positioning part 4631 in the rotation direction of the linkage handle 463 being a closing positioning part 4633 and a closing positioning part 4632, respectively. The cross-section of the handle positioning part 4631 perpendicular to the rotation axis of the linkage handle 463 is preferably a folding fan-shaped structure, with its center coinciding with the rotation axis of the linkage handle 463.

[0251] Specifically, the module housing 476 further includes a closing / opening limit part 4661, with a closing limit part 4663 and a closing limit part 4662 at its two ends in the rotation direction of the linkage handle 463. The cross-section of the closing / opening limit part 4661 perpendicular to the rotation axis of the linkage handle 463 is preferably a folding fan structure, with its center coinciding with the rotation axis of the linkage handle 463. Furthermore, the closing / opening limit part 4661 has a cavity in the middle, which helps reduce the amount of material used in the module housing 476 and saves costs.

[0252] like Figure 25 , 26 As shown in Figure 29, the drive module 460 also includes a closing feedback mechanism 477, which is used to provide feedback on the opening and closing status of the switchgear.

[0253] The closing feedback mechanism 477 has a first state and a second state corresponding to the handle closing position and the handle opening position, respectively. When the linkage handle 463 is switched to the handle closing position, the closing feedback mechanism 477 is triggered to switch to the second state to indicate the closing state of the switchgear; when the linkage handle 463 is switched to the handle opening state, the closing feedback mechanism 477 switches to the first state.

[0254] The closing feedback mechanism 477 can remotely monitor the opening and closing status of the switchgear, and in conjunction with the electric operating mechanism 475, can achieve precise opening and closing control of the switchgear.

[0255] Specifically, the closing feedback mechanism 477 includes a feedback element 468 and a conductive element 469 both mounted on the module housing 476. When the linkage handle 463 is rotated to the handle closing position, it drives the feedback element 468 to move and make contact with the conductive element 469. When the linkage handle 463 is in the handle opening position, the feedback element 468 separates from the conductive element 469. Furthermore, when the linkage handle 463 is rotated to the handle opening position, it avoids the feedback element 468, and the feedback element 468 automatically resets and separates from the conductive element 469.

[0256] As an alternative to the operation mode of the feedback element 468, when the linkage handle 463 is rotated to the handle open position, the feedback element 468 is driven to move and separate from the conductive element 469.

[0257] Specifically, the linkage handle 463 further includes a feedback drive unit 4634. The feedback element 468 is a torsion spring, which includes a helical body 4680 and a first arm 4681 and a second arm 4682 respectively connected to the helical body 4680. The module housing 476 includes a spring shaft 478. The helical body 4680 is rotatably sleeved on the spring shaft 478, the first arm 4681 is fixedly set, and the second arm 4682 is in transmission cooperation with the feedback drive unit 4634 and is used to contact and conduct electricity with the conductive element 469; that is, when the linkage handle 463 is rotated to the handle closed position, the feedback drive arm 4634 drives the second arm 4682 to contact and conduct electricity with the conductive element 469. Further, the conductive element 469 is a conductive post fixedly set on the module housing 476. Further, the first arm 4681 and the conductive element 469 are respectively used to connect to the circuit board assembly 130 of the plug-in base 100.

[0258] After the drive module 460 drives the switchgear to close, the force applied by the second arm 4862 to the linkage handle 463 makes it tend to rotate towards the handle opening position, which helps to improve the opening speed of the switchgear when opening.

[0259] As an alternative to the feedback element 468, the feedback element 468 is a V-shaped leaf spring, with one spring arm fixedly installed and the other spring arm cooperating with the feedback drive unit 4634 and the conductive element 469 respectively.

[0260] As an alternative to the closing feedback mechanism 477, the closing feedback mechanism 477 is a micro switch, which is triggered to change the working state when the linkage handle 463 is rotated to the handle closing position.

[0261] Specifically, one end of the feedback drive unit 4634 is connected to the handle positioning part 4631 of the linkage handle 463, and the other end is in transmission cooperation with the feedback element 468.

[0262] like Figure 25 , 26 As shown in Figure 29, the drive module 460 further includes a leakage current trip unit 474 and a linkage shaft 461 rotatably mounted on the module housing 476; the linkage shaft 461 is in transmission cooperation with the operating mechanism 360; the leakage current trip unit 474 is used to drive the linkage shaft 461 to rotate to drive the operating mechanism 360 to trip when a leakage current fault occurs in the circuit where the switch appliance is located (i.e., residual current appears in the circuit where the switch appliance is located).

[0263] Specifically, the rotation axis of the linkage shaft 461 is parallel to direction d2. The switching device also includes a tripping transmission rod, one end of which is fixedly connected to the linkage shaft 461 and the other end of which is in transmission engagement with the tripping fastener of the operating mechanism 360. When a leakage fault occurs in the circuit where the switching device is located, the leakage current trip unit 474 drives the linkage shaft 461 to rotate, the linkage shaft 461 drives the tripping transmission rod to move, and the tripping transmission rod drives the tripping fastener of the operating mechanism 360 to rotate, causing the tripping fastener to disengage from the locking fastener of the operating mechanism 360, thereby disengaging the operating mechanism 360. The leakage current trip unit 474 is a direct-acting electromagnetic trip unit, including a coil assembly, a linearly moving top rod inserted into the coil assembly, etc., which can be implemented using existing technology and will not be described in detail here.

[0264] It should be noted that the movement mode of the linkage shaft 461 is not limited to rotation. For example, the linkage shaft 461 can also be set to slide along a predetermined track, which can be achieved by existing technology, and will not be elaborated here.

[0265] like Figure 35As shown, the electric operating mechanism 475 is also used to drive the linkage shaft 461 to move, causing the linkage shaft 461 to drive the operating mechanism of the switchgear to trip. That is, the linkage shaft 461 is in transmission cooperation with the leakage current trip unit 474 and the electric operating mechanism 475 respectively, which can achieve leakage current protection and also quickly trip the operating mechanism of the switchgear through the electric operating mechanism 475 and the linkage shaft 461 when the drive module 460 receives a fee control signal. This achieves two goals at once, with a simple structure and space-saving design. Furthermore, the linkage shaft 461 is rotatably mounted on the module housing 476 in the middle, with both ends in transmission cooperation with the leakage current trip unit 474 and the electric operating mechanism 475 respectively. Furthermore, the gear set 467 is in transmission cooperation with the linkage shaft 461 to drive the linkage shaft 461 to move and cause it to trip the operating mechanism of the switchgear. The above-described design of the drive module 460 not only realizes automatic opening and closing control of the switching device, but also realizes leakage protection function and fee control opening function, which is rich and comprehensive in function; the leakage protection function and fee control opening function are both realized through the linkage shaft, which simplifies the structure of the drive module.

[0266] Specifically, one gear in the gear set 467 is a tripping gear; the linkage shaft 461 includes a first arm 4611 and a second arm 4612 that respectively engage with the tripping gear and the leakage current trip unit 474. In direction d2, a tripping block 46740 is provided on one side of the tripping gear, and the first arm 4611 is located on one side of the tripping gear and on the movement path of the tripping block 46740; that is, when the tripping gear drives the tripping block 46740 to move, it presses against the first arm 4611 of the linkage shaft, thus driving the linkage shaft 461 to move. The second arm 4612 of the linkage shaft is positioned opposite to one end of the push rod of the leakage current trip unit 474 in direction d3. Further, the fourth gear 4674 serves as a tripping gear.

[0267] like Figure 35As shown, one layout of the drive module 460 is as follows: the linkage handle 463, linkage gear 4675, and leakage current testing mechanism 462 are located at one end of the drive module 460 in direction d3, and the motor 473 and leakage current trip unit 474 are located at the other end of the drive module 460 in direction d3; the motor 473 and leakage current trip unit 474 are arranged side by side with intervals in direction d1; the gear set 467 is located between the motor 473 and leakage current trip unit 474 in direction d1; the linkage shaft 461 and the gear set 467 are arranged side by side in direction d1; the leakage current testing mechanism 462, linkage shaft 461, and leakage current trip unit 474 are arranged sequentially in direction d3; the closing feedback mechanism 477 and linkage shaft 461 are located at both ends of the drive module 460 in direction d1; the output shaft of the motor 473 is parallel to direction d3; the push rod of the leakage current trip unit 474 is movable in direction d3. The internal layout of the drive module 460 is reasonable and compact, which helps to reduce the overall size of the drive module 460.

[0268] like Figure 16 As shown, the plug-in base 100 also includes a zero-sequence current transformer 700, which is disposed between the outgoing switch position 113 and the outgoing position 122 in the direction d1; the second copper busbar 258 of each of the rear-end connection assemblies 253 passes through the middle of the zero-sequence current transformer 700; the zero-sequence current transformer 700 is connected to the circuit board assembly 130.

[0269] like Figure 16 As shown, the plug-in base 100 also includes a current sampling element 710 connected to the circuit board assembly 130. The current sampling element 710 is coupled to the circuit connection device 215 and is used to sample the current flowing through the circuit connection device 215 - that is, to collect the current parameters of the metering device.

[0270] Specifically, such as Figure 16 As shown, the current sampling element 710 is a current transformer, which is positioned between the incoming switch position 112 and the incoming position 121 in the direction d1; a current sampling element 710 is fitted onto the second copper busbar 258 of the front-end connection assembly 252 of one phase. It should be noted that the specific position of the current transformer can be adjusted according to actual needs.

[0271] As an alternative implementation of the current sampling element 710, the current sampling element 710 is a manganese copper shunt. The manganese copper shunt can be connected in series between the incoming terminal and the first plug terminal of the phase front-end connection component 252. For example, the incoming terminal, the manganese copper shunt, and the first plug terminal are connected in series in sequence and are an integral structure; or, the manganese copper shunt can be connected in series between the meter connector of the phase intermediate connection component 221 and the incoming second plug terminal (or the outgoing first plug terminal).

[0272] like Figure 25 , 26 As shown in Figure 28, the module housing 476 includes a first half-shell 465 and a second half-shell 466 that are fitted together. The opening and closing limit part 4661 is disposed on the second half-shell 466. The first half-shell 465 and the second half-shell 466 are fitted together along direction d2.

[0273] like Figure 25 , 26 As shown in Figure 29, the drive module 460 also includes a leakage current test mechanism 462 disposed in the module housing 476, which is used to test the leakage current tripping performance of the switching device.

[0274] like Figure 22 and 23 As shown, in the metering device of this utility model, the switch (the switch is an incoming switch 300 or an outgoing switch device 400) also includes a locking mechanism 375 disposed in the switch housing 301. The locking mechanism 375 is used to reliably lock the switch in the corresponding switch position, and in particular, it can prevent the switch from being plugged or unplugged in the switch position when the switch is closed.

[0275] The locking mechanism 375 includes a locking element 380 that is in transmission cooperation with the operating handle 302. The locking element 380 includes a locking protrusion 385. The plug-in base 100 is provided with a locking hole. After the switch is installed in place, the locking protrusion 385 protrudes from the outside of the switch housing 301 and inserts into the corresponding locking hole. After the switch is opened, the operating handle 302 is rotated in the opening direction by external force, driving the locking element 380 to move and causing the locking protrusion 385 to exit the locking hole, thereby engaging the locking mechanism 375 and the plug-in base 100 in a locking cooperation, allowing the user to remove the switch from the plug-in base 100.

[0276] Specifically, the first side plate 144 of the first partition 140 is provided with two sets of locking holes arranged side by side along direction d2, namely the first side plate hole 145 and the second side plate hole 146, which are respectively used to cooperate with the locking protrusions 385 of the two sets of switching devices (i.e., the locking protrusion 385 of the inlet switch 300 and the locking protrusion 385 of the outlet switch device 400). That is to say, the inlet switch 300 and the outlet switch device 400 are each provided with a locking mechanism 375 to lock the inlet switch 300 and the outlet switch device 400 in the inlet switch position 112 and the outlet switch 113, respectively.

[0277] Specifically, the locking member 380 is linearly slidably disposed within the switch housing 301. Further, the locking member 380 is slidably disposed within the switch housing 301 along direction d3.

[0278] As an alternative to the movement mode of the locking member 380, the locking member 380 is rotatably disposed within the switch housing 301, or the locking member 380 is slidably disposed within the switch housing 301 and the sliding trajectory of the locking member 380 is a curve.

[0279] like Figure 22 , 23 As shown, the locking mechanism 375 also includes a locking spring 386. The locking spring 386 acts on the locking member 380, causing the locking protrusion 385 to tend to move outward of the switch housing 301. That is, when the locking member 380 is not subjected to the force (direct or indirect force) of the operating handle 302 or the locking protrusion 385 is not subjected to external pressure, the force of the locking spring 386 on the locking member 380 keeps the locking protrusion 385 protruding outward of the switch housing 301.

[0280] like Figure 22 , 23 As shown, the locking mechanism 375 further includes a linkage rod 390 and an unlocking cam 394 coaxially linked with the operating handle 302, meaning the operating handle 302 and the unlocking cam 394 are coaxially and synchronously rotated. The unlocking cam 394 is in transmission engagement with the locking member 380 via the linkage rod 390. When the operating handle 302 reciprocates to drive the switching device to open or close, the linkage rod 390 remains stationary. Furthermore, the linkage rod 390 and the unlocking cam 394 are in contact transmission engagement, and the linkage rod 390 is either in transmission connection or in contact transmission engagement with the locking member 380.

[0281] Specifically, the unlocking cam 394 includes a cam drive finger 395; the locking member 380 includes a locking member driven part 384; the linkage rod 390 is rotatably mounted on the switch housing 301 at its center, with one end engaging with the cam drive finger 395 and the other end engaging with the locking member driven part 384.

[0282] Specifically, the locking member 380 has a locking protrusion 385 at one end and a locking member driven part 384 at the other end, and a locking member groove 383 in the middle; one of the two side walls of the locking member groove 383 serves as the locking member driven part 384, and the other has a locking member spring part 382; the locking member spring 386 is a compression spring disposed in the locking member groove 383, with one end cooperating with the locking member spring 384 and the other end cooperating with the switch housing 301; one end of the linkage rod 390 is in transmission cooperation with the cam drive finger 395, and the other end is inserted into the locking member groove 383 and in transmission cooperation with the locking member driven part 384. Further, the switch housing 301 also includes a spring seat 396, which is located in the locking member groove 383, and both ends of the locking member spring 386 are respectively in cooperation with the locking member spring part 383 and the spring seat 396.

[0283] Specifically, the linkage rod 390 has an L-shaped structure, with one side of the L-shaped structure being approximately parallel to direction d3, and the other side of the L-shaped structure being approximately parallel to direction d1.

[0284] like Figure 23 As shown, the locking element 380, the linkage rod 390, and the unlocking cam 394 are arranged sequentially in direction d3; the locking element 380 and the unlocking cam 394 are located at both ends of the switchgear in direction d1; the locking element 380 is located in the middle of the switchgear in direction d3, and the unlocking cam 394 is located at one end of the switchgear in direction d3; the rotation axes of the unlocking cam 394 and the linkage rod 390 are both parallel to direction d2.

[0285] Specifically, under the action of the locking spring 386, the locking member 380 has a tendency to move along direction d1 toward the side where the meter position 111 is located.

[0286] like Figure 1 and 34 As shown, the plug-in base 100 also includes a battery assembly 200, which is disposed within the outlet position 122. When the system—the circuit where the metering device is located—is powered off, the battery assembly 200 continuously supplies power to the clock chip of the circuit board assembly 130, ensuring that events are not lost and allowing for the query of fault time points. Furthermore, the battery assembly 200 is plugged into and electrically connected to the circuit board assembly 300 along direction d3, thereby supplying power to the circuit board assembly 130 when the mains power supply circuit of the circuit board assembly 130 is powered off.

[0287] Specifically, the circuit board assembly 130 is provided with power-taking terminals 131, which are plugged into and electrically connected to the second copper busbar 258 (specifically, the conductive plate extension plate 2583) of the front-end connecting assembly 252. The power-taking terminals 131 are busbar clamps, plugged into and electrically connected to the conductive plate extension plate 2583 along direction d3. The number of power-taking terminals 131 is the same as the number of phases of the metering device / incoming switch 300 / energy meter / outgoing switch 410.

[0288] like Figure 1 As shown, the insertion base 100 (specifically the base body 110 and the third partition 160) is provided with a battery assembly cavity in which the battery assembly 200 is inserted.

[0289] like Figure 34 As shown, the battery assembly 200 includes a battery handle 201, a battery body 202, and a battery plug-in terminal 203 connected in sequence. The battery handle 201 is for user operation, and the battery plug-in terminal 203 is electrically connected to the battery body 202 and is used for plugging and electrically connecting to the circuit board assembly 130.

[0290] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used during use. They are only for ease of description and do not indicate that the device or component referred to must have a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating relative importance.

[0291] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A plug-in base, comprising a meter position (111) disposed on one side thereof for mounting an electricity meter, wherein the meter position (111) is provided with an electricity meter plug-in terminal (223) for plugging into the wiring terminal of the electricity meter in a direction d1; Its features are: The plug-in base also includes a meter positioning detection mechanism (720); the meter positioning detection mechanism (720) includes a first detection rod (721) and a first detection element, both disposed on the plug-in base, and a first detection rod spring (727); the first detection rod (721) is used to drive the energy meter and has a first detection rod position and a second detection rod position; the first detection rod spring (727) acts on the first detection rod (721) to make it tend to move towards the first detection rod position; the first detection rod (721) is configured to be driven by the energy meter installed in the meter position (111) to move from the first detection rod position to the second detection rod position, so as to trigger the first detection element to output a signal indicating that the energy meter has been installed.

2. The plug-in base according to claim 1, characterized in that: The first detection rod (721) is slidably mounted on the plug-in base along direction d1.

3. The plug-in base according to claim 2, characterized in that: The first detection rod (721) also includes a first detection rod driven end (722) protruding from the meter position (111). The first detection rod driven end (722) is used to drive the first detection rod (721) from the first detection rod position to the second detection rod position when pressed by the electricity meter.

4. The plug-in base according to claim 3, characterized in that: The first detection rod (721) further includes a first detection rod body (723) and a first detection rod triggering part (726), wherein the first detection rod receiving end (722) and the first detection rod triggering part (726) are respectively connected to both ends of the first detection rod body (723); The first detection rod trigger part (726) is used to trigger the first detection element; The first detection rod body (723) is provided with a first detection rod cavity (725); the first detection rod spring (727) is a compression spring, at least part of the first detection rod spring (727) is inserted into the first detection rod cavity (725) and cooperates with the first detection rod (721), and the other end cooperates with the insertion base (100).

5. The plug-in base according to claim 4, characterized in that: The first detection rod trigger part (726) is bent and connected to the first detection rod body (723), and the first detection rod trigger part (726) and the first detection rod body (723) are integrally formed into an L-shaped structure.

6. The plug-in base according to claim 4, characterized in that: The insertion base is provided with a first mounting cavity (123) in which the first detection rod body (723) is slidably inserted. One end of the first mounting cavity (123) is provided with a first sliding hole (124). The end of the first detection rod body (723) connected to the driven end (722) of the first detection rod is slidably inserted into the first sliding hole (124).

7. The plug-in base according to claim 6, characterized in that: The first detection rod (721) further includes a first detection rod limiting part (724) disposed on the outer side of the first detection rod body (723); the first detection rod spring (727) acts on the first detection rod (721) to limit the first detection rod limiting part (724) to engage with the portion of the insertion base located radially outside the first sliding hole, thereby keeping the first detection rod (721) in the first detection rod position.

8. The plug-in base according to claim 6, characterized in that: The plug-in base also includes a base body (110) and a first partition (140); the first partition (140) cooperates with one side of the base body (110) in the direction d3, and the first partition (140) and the base body (110) cooperate to form an electric meter position (111) and a first mounting cavity (123).

9. The plug-in base according to claim 1, characterized in that: The first detection element is a micro switch or a photoelectric sensor.

10. The plug-in base according to claim 1, characterized in that: The plug-in base also includes a circuit board assembly (130) disposed in the base body (110) of the plug-in base, and the first detection element is connected to the circuit board assembly (130); the meter positioning detection mechanism (720) is located on one side of the circuit board assembly (130) in direction d3; the directions d1 and d3 are perpendicular to each other.

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