Electric meter

Abstract

The utility model provides an electricity meter, and relates to the technical field of low-voltage electrical appliances, the electricity meter comprises a load switch and a current detector which are arranged along a first direction, the load switch comprises a magnetic driving assembly and a contact assembly, and the contact assembly comprises a static contact plate and a movable contact plate connected with the magnetic driving assembly. The magnetic driving assembly drives the movable contact plate to be in contact with or separated from the static contact plate, the load switch further comprises an arc extinguish chamber arranged on one side of the static contact plate, and the arc extinguish chamber is arranged close to the current detector. According to the ammeter provided by the invention, the problem of unreasonable internal layout of the ammeter in the prior art is solved, and the internal space of the ammeter is utilized more fully.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to an electric meter. Background Art

[0002] A load switch is an electrical control device. When the change in input quantity reaches the specified requirements, it causes a predetermined step change in the controlled quantity in the electrical output circuit. Load switches have an interactive relationship between the control system and the controlled system. They are usually used in automated control circuits. In fact, they are an "automatic switch" that uses a small current to control the operation of a large current. Therefore, they play the role of automatic adjustment, safety protection, and circuit conversion in the circuit. Since load switches have unique electrical and physical characteristics in control circuits, their high insulation resistance in the off state and low on-resistance in the on state, coupled with the advantages of high standardization, good versatility, and simplified circuits, load switches are widely used in communications, automobiles, automatic control, and household appliances.

[0003] Existing electric meters are becoming more and more integrated, and integrating load switches into electric meters has become a development trend of electric meters. Due to the high performance requirements for load switches used in electric meters, such as their short-term withstand indicators, etc., the load switch structure is relatively complex and large in size, but the internal space of the electric meter is very limited; secondly, the load switch needs to be connected to the electric meter terminal inside the electric meter to facilitate monitoring of the electric meter status and timely feedback. The position of the electric meter terminal is fixed, which makes the wiring between the load switch and the electric meter complicated and the conductive loop resistance large; and the load switch is also easily interfered by the magnetic field outside the electric meter, resulting in unstable control of the load switch magnetic system on or off the contact mechanism. Therefore, how to reduce the size of the load switch while meeting the performance index requirements, and the wiring method with the electric meter is simple, so that it can be installed inside the electric meter for normal use and the layout is reasonable is a technical problem that needs to be solved urgently. Utility Model Content

[0004] The purpose of the present application is to provide an electric meter to address the deficiencies in the above-mentioned prior art, so as to solve the problem of unreasonable internal layout of the electric meter in the prior art and make more effective use of the internal space of the electric meter.

[0005] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0006] According to one aspect of an embodiment of the present application, an electric meter is provided, comprising a load switch and a current detector arranged along a first direction, the load switch comprising a magnetic drive assembly and a contact assembly, the contact assembly comprising a stationary touch plate and a moving touch plate connected to the magnetic drive assembly, the magnetic drive assembly drives the moving touch plate to contact or separate from the stationary touch plate, the load switch further comprising an arc extinguishing chamber arranged on one side of the stationary touch plate, and the arc extinguishing chamber and the current detector are arranged on the same side of the magnetic drive assembly.

[0007] As an implementable manner, the driving direction of the magnetic driving component is the second direction, so as to drive the movable touch plate to move along the second direction, and the movable touch plate moves to contact or separate from the stationary touch plate, and the first direction is perpendicular to the second direction.

[0008] As an implementable method, a plurality of terminals are arranged on one side of the load switch and the current detector along the second direction, the plurality of terminals are arranged in sequence along the first direction, the plurality of terminals are electrically connected to the load switch respectively, and the contact assembly is located between the magnetic drive assembly and the terminals.

[0009] As an implementable method, the wiring terminals include a first wiring terminal, a second wiring terminal, a third wiring terminal and a fourth wiring terminal which are arranged in sequence along the arrangement direction of the load switch and the current detector, the moving touch plate is connected to the first wiring terminal through a first wiring member, the stationary touch plate is connected to the second wiring terminal through a second wiring member, the third wiring terminal and the fourth wiring terminal are electrically connected through a conductive member and pass through the current detector, and a manganese copper plate is provided on the first wiring member.

[0010] As an implementable manner, the first wiring member is located at a side of the load switch away from the current detector, and the first wiring member is electrically connected to the first wiring terminal.

[0011] As an practicable manner, the moving touch plate is connected to the magnetic drive assembly via a contact bracket, the contact assembly further includes a rotating assembly, the moving touch plate includes at least two, and one end of each moving touch plate is connected to the rotating assembly, and the other end is provided with a moving contact that is in contact with a static contact on the static touch plate, the driving direction of the magnetic drive assembly is the same as the movement direction of the contact bracket, and the magnetic drive assembly drives the moving touch plate to move around the rotation axis of the rotating assembly so that the moving contact contacts or separates from the static touch plate.

[0012] As an implementable method, an elastic member is provided on the rotating component, and the two ends of the elastic member respectively abut against the head bracket and the moving touch plate. When the magnetic drive component pushes the moving contact to contact the static touch plate, the elastic member generates an elastic force that drives the moving contact to abut against the static touch plate.

[0013] As an implementable manner, the electric meter further includes a flexible connection, one end of which is connected to one end of the moving touch plate, and the other end is connected to the first wiring member, and at least two moving touch plates are connected in series or in parallel via the flexible connection.

[0014] As an implementable method, a magnetizing assembly is also provided on the contact assembly, and the magnetizing assembly includes a first magnetizing block provided on the moving touch plate and a second magnetizing block provided on one side of the stationary touch plate, and the first magnetizing block and the second magnetizing block interact with each other to increase the contact force between the moving touch plate and the stationary touch plate.

[0015] As an implementable manner, the electric meter also includes a shielding plate that is attached to the side of the magnetic drive component, the shielding plate encloses the magnetic drive component, and an air gap is formed between at least one shielding plate and other shielding plates.

[0016] As an implementable manner, the electric meter further includes a circuit board arranged on one side of the composite switch and the current detector along the third direction, and the load switch and the current detector are arranged on a board surface of the circuit board.

[0017] The beneficial effects of this application include:

[0018] The present application provides an electric meter, comprising a load switch and a current detector arranged at intervals along a first direction, the load switch comprising a magnetic drive assembly and a contact assembly, the contact assembly comprising a stationary touch plate and a moving touch plate connected to the magnetic drive assembly, the magnetic drive assembly drives the moving touch plate to contact or separate with the stationary touch plate, the load switch further comprising an arc extinguishing chamber arranged on one side of the stationary touch plate, and the arc extinguishing chamber and the current detector are arranged on the same side of the magnetic drive assembly, so that the arc extinguishing chamber is arranged on a side of the load switch close to the current detector. The embodiment of the present application adjusts the positions of various components in the load switch, arranges the arc extinguishing chamber on a side close to the current detector, and fully utilizes the space between the load switch and the current detector, that is, fully utilizes the space in the electric meter along the first direction, thereby reducing the space in the electric meter occupied by the load switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 One of the structural schematic diagrams of an electric meter provided in an embodiment of the present application;

[0021] Figure 2 A second structural schematic diagram of an electric meter provided in an embodiment of the present application;

[0022] Figure 3 A third structural schematic diagram of an electric meter provided in an embodiment of the present application;

[0023] Figure 4 A fourth structural schematic diagram of an electric meter provided in an embodiment of the present application;

[0024] Figure 5 A fifth structural diagram of an electric meter provided in an embodiment of the present application;

[0025] Figure 6 One of the simulation diagrams of the external magnetic field effect provided for the implementation of this application;

[0026] Figure 7 The second simulation diagram of the external magnetic field effect provided for the implementation of this application;

[0027] Figure 8 The third simulation diagram of the external magnetic field effect provided for the implementation of this application;

[0028] Fig. 9 Figure 4 of the simulation of the impact of external magnetic field provided for the implementation of this application;

[0029] Fig.10 A sixth structural schematic diagram of an electric meter provided in an embodiment of the present application.

[0030] Icons: 100-electricity meter; 110-load switch; 120-current detector; 130-magnetic drive assembly; 140-contact assembly; 141-moving contact plate; 142-static contact plate; 143-rotating assembly; 144-moving contact; 145-contact bracket; 150-arc extinguishing chamber; 160-connecting terminal; 170-circuit board; 180-first connecting piece; 181-manganese copper plate; 182-plug terminal; 183-flexible connection; 190-magnetizing assembly; 191-first magnetizing block; 192-second magnetizing block. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. It should be noted that, in the absence of conflict, the various features in the embodiments of the present application can be combined with each other, and the combined embodiments are still within the scope of protection of the present application.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] Furthermore, the terms “first”, “second”, “third”, etc. are merely used for distinguishing descriptions and are not to be understood as indicating or implying relative importance.

[0035] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] In one aspect of the embodiment of the present application, Figure 1 and Figure 2 As shown, an electric meter 100 is provided, including a load switch 110 and a current detector 120 arranged along a first direction, the load switch 110 includes a magnetic drive component 130 and a contact component 140, the contact component 140 includes a stationary touch plate 142 and a moving touch plate 141 connected to the magnetic drive component 130, the magnetic drive component 130 drives the moving touch plate 141 to contact or separate with the stationary touch plate 142, the load switch 110 also includes an arc extinguishing chamber 150 arranged on one side of the stationary touch plate 142, and the arc extinguishing chamber 150 and the current detector 120 are arranged on the same side of the magnetic drive component 130.

[0037] The electric meter 100 provided in the embodiment of the present application is used to measure the amount of electricity flowing through the electric meter 100. The electric meter 100 includes a wiring terminal 160, a metering component, a load switch 110, and a current detector 120. The wiring terminal 160 is a bridge for the access of the mains and the user's electrical equipment, the metering component is used to calculate the amount of electricity, the load switch 110 is used to control the on and off between the power grid and the electrical equipment, and the current detector 120 is used to detect leakage signals.

[0038] Specifically, in the electric meter 100 provided in the embodiment of the present application, the load switch 110 and the current detector 120 are arranged along the first direction, wherein the load switch 110 includes a magnetic drive assembly 130 and a contact assembly 140, the contact assembly 140 includes a static touch plate 142 and a moving touch plate 141, the moving touch plate 141 is connected to the driving end of the magnetic drive assembly 130, and the magnetic drive assembly 130 is connected to the circuit board 170 signal, so as to drive the moving touch plate 141 to approach or move away from the static touch plate 142 according to the control signal of the circuit board 170, and to contact or separate from the static touch plate 142, so as to realize the opening and closing of the load switch 110. Due to the large current flowing through, an arc is generated when the moving touch plate 141 is separated from the static touch plate 142. In order to extinguish the arc, the load switch 110 also includes an arc extinguishing chamber 150 arranged on one side of the static touch plate 142. In the embodiment of the present application, the arc extinguishing chamber 150 and the current detector 120 are arranged on the same side of the magnetic drive assembly 130 of the load switch 110. In the embodiment of the present application, the positions of various components in the load switch 110 are adjusted, and the arc extinguishing chamber 150 and the current detector 120 are arranged on the same side of the magnetic drive assembly 130, so that the current of the load switch 110 passes through the current detector 120 for detection, and the wiring is simple and reasonable, and at the same time, the space between the load switch 110 and the current detector 120 is fully utilized, that is, the space in the electric meter 100 along the first direction is fully utilized, thereby reducing the space in the electric meter 100 occupied by the load switch 110.

[0039] Among them, the specific structure and detection principle of the current detector 120 are not limited in the embodiments of the present application, as long as the current flowing in the electric meter 100 can be detected. For example, the current detector 120 is a transformer, and the current flowing through the static touch plate 142 / moving touch plate 141 in the load switch 110 will pass through the center of the transformer. At the same time, the electrical connection between other terminals is used, and the current direction is opposite to the current direction flowing through the static touch plate 142 / moving touch plate 141. The electrical connection also passes through the center of the transformer to perform power theft and leakage detection. Under normal circumstances, at the same time, the two circuits passing through the center of the transformer have opposite current directions and the same magnitude. At this time, the sum of the magnetic flux in the transformer is approximately zero. When a line fault occurs, the magnitudes of the two currents are different, and the magnetic flux in the transformer is not zero.

[0040] Specifically, the position and manner of setting the transformer are not limited in the embodiment of the present application. For example, it can be located on the right side of the load switch 110 as shown in 1; it can also be located on the right side of the load switch 110 as shown in 1. Fig.10 As shown, it is arranged between the second terminal and the third terminal.

[0041] At this time, the transformer detects the abnormal current signal. The transformer is also connected to the circuit board 170. The circuit board 170 controls the driving component to drive the moving touch plate 141 to move away from the static touch plate 142 according to the abnormal current signal, and the load switch 110 is opened, thereby realizing the leakage protection of the electric meter 100. The transformer is used as the current detector 120, which has a simple structure and an accurate detection effect.

[0042] The present application provides an electric meter 100, including a load switch 110 and a current detector 120 arranged along a first direction, the load switch 110 including an arc extinguishing chamber 150 arranged on one side of a stationary touch plate 142, and the arc extinguishing chamber 150 and the current detector 120 are arranged on the same side of a magnetic drive assembly 130, so that the arc extinguishing chamber is arranged close to the current detector 120. The embodiment of the present application adjusts the positions of various components in the load switch 110, arranges the arc extinguishing chamber 150 on a side close to the current detector 120, and fully utilizes the space between the load switch 110 and the current detector 120, that is, fully utilizes the space in the electric meter 100 along the first direction, thereby reducing the space in the electric meter 100 occupied by the load switch 110.

[0043] Optional, such as Figure 2 and Figure 3 As shown, the driving direction of the magnetic driving assembly 130 is the second direction, so as to drive the movable touch plate 141 to move along the second direction, and the movable touch plate 141 moves to contact or separate from the stationary touch plate 142, and the first direction is perpendicular to the second direction.

[0044] In actual applications, the electric meter 100 is installed in the electric meter box, and there may be an environmental magnetic field outside the electric meter box. The environmental magnetic field will interfere with the magnetic drive component 130 of the load switch 110. Therefore, the national standard stipulates that the vertical direction corresponding to each surface of the load switch 110 should be able to withstand a certain magnetic field strength. Specifically, in order to simulate the environmental magnetic field, a magnetic source is set on the side of the load switch 110 away from the current detector, and it is required that the load switch 110 should not change its state under the magnetic source and can be closed and opened normally. The simulation calculation is performed on the presence or absence of a magnetic source and the polarity of the magnetic source. The results are as follows: Figure 6 , Figure 7 , Figure 8 and Fig. 9 As shown, Figure 6 This is a simulation diagram of the magnetic drive component when there is no magnetic source, and the holding force is 31.94N; Figure 7-Figure 9The holding forces of the magnetic drive assembly 130 when there is an external magnetic source are: 34.69N (lateral N magnetic field, affected by the external magnetic source, the magnetic field is enhanced), 26.1N (lateral S magnetic field, affected by the external magnetic source, the magnetic field is weakened), 12N (movement direction N magnetic field, affected by the external magnetic source, the magnetic field is weakened). Through simulation analysis of different external magnetic source environments and different driving directions of the magnetic drive assembly 130 of the load switch, it is found that when the driving direction of the magnetic drive assembly 130 is the second direction (that is, when the moving iron core moves along the second direction), the magnetic drive assembly 130 of the load switch 110 is less affected by the external magnetic source. Therefore, preferably, the driving direction of the magnetic drive assembly 130 of the embodiment of the present application is the second direction, thereby avoiding the external magnetic field from affecting the magnetic field of the magnetic drive assembly 130 and improving the working stability of the magnetic drive assembly 130. Of course, in other embodiments, the driving direction of the magnetic drive assembly 130 can also be the first direction.

[0045] In addition, in order to further weaken the influence of the external magnetic source on the magnetic drive assembly 130, the electric meter 100 also includes a shielding plate arranged on the outside of the magnetic drive assembly 130, and the shielding plate encloses the magnetic drive assembly 130. The shielding plate encloses the magnetic drive assembly 130 therein, weakening the influence of the external magnetic field on the magnetic drive assembly 130, and at the same time directly enclosing only the magnetic drive assembly 130 for magnetic shielding, thereby improving the shielding effect, reducing the cost, and further reducing the overall size of the load switch 110, so as to facilitate its installation in the electric meter 100.

[0046] In order to further ensure that the external magnetic field does not interfere with the magnetic drive component 130 while it can normally drive the moving touch plate 141 and no magnetic short circuit occurs, air gaps are provided on the two shielding plates along the third direction, and the air gap on each shielding plate is larger than the movement stroke of the moving iron core in the magnetic drive component 130.

[0047] In one possible implementation of the embodiment of the present application, Figure 1 , Figure 2 and Figure 3 As shown, a plurality of wiring terminals 160 are arranged on one side of the load switch 110 and the current detector 120 along the second direction, the plurality of wiring terminals 160 are arranged in sequence along the first direction, the plurality of wiring terminals 160 are electrically connected to the load switch 110 respectively, the contact assembly 140 is located between the magnetic drive assembly 130 and the wiring terminal 160, and a manganese copper plate 181 is arranged on the first wiring member 180.

[0048] The wiring terminals 160 are respectively connected to the load switches 110. To facilitate the connection of the wiring terminals 160, the embodiment of the present application arranges the wiring terminals 160 on one side of the load switch 110 and the current detector 120 along the second direction. The arrangement direction of the plurality of wiring terminals 160 is consistent with the arrangement direction of the load switch 110 and the current detector 120, so as to facilitate the connection of the wiring terminals 160 and the load switch 110 or the current detector 120. Specifically, the load switch 110 includes a housing, and the static touch plate 142 is arranged on the inner side wall of the housing on one side close to the wiring terminal 160, so that the static touch plate 142 is located between the wiring terminal 160 and the magnetic drive assembly 130.

[0049] When the wiring terminal 160 is connected to the load switch 110, the wiring terminal 160 is connected to the moving touch plate 141 and the stationary touch plate 142 of the load switch 110. In order to facilitate the connection between the wiring terminal 160 and the moving touch plate 141 and the stationary touch plate 142, the embodiment of the present application sets the contact assembly 140 of the load switch 110 between the magnetic drive assembly 130 and the wiring terminal 160. Specifically, in this embodiment, the stationary touch plate 142 is set on the side of the housing close to the wiring terminal 160, and the moving touch plate 141 is far away from the stationary touch plate 142 or the stationary touch plate 142, so that the magnetic drive assembly 130 is located on the side of the contact assembly 140 away from the wiring terminal 160. The stationary touch plate 142 is located between the wiring terminal 160 and the magnetic drive assembly 130, which facilitates the electrical connection between the load switch 110 and the wiring terminal 160, making the wiring arrangement of the electrical connection simpler and more reasonable, and further reducing the wiring resistance.

[0050] Specifically, the terminal block 160 includes a first terminal block, a second terminal block, a third terminal block and a fourth terminal block which are sequentially arranged along the arrangement direction of the load switch 110 and the current detector 120. Specifically, since the arc extinguishing chamber 150 and the current detector 120 are located on the same side of the magnetic drive assembly 130, and the arc extinguishing chamber 150 is arranged on one side of the static touch plate 142 for a better arc extinguishing effect, and the current flowing through the load switch 110 needs to pass through the current detector 120 for detection, the moving touch plate 141 is connected to the first terminal block through the first terminal block 180, and the static touch plate 142 is connected to the second terminal block through the second terminal block, so that the electrical connection between the load switch 110 and the terminal block is more reasonable, and the conductive loop resistance is smaller. A manganese copper plate 181 is provided on the first terminal block 180. Specifically, the second terminal block can be designed as an integral whole with the static touch plate 142, such as the static touch plate 142 directly extending outward through the current detector 120 to connect with the second terminal block. Of course, the two structures can also be electrically connected, and adjustments can be made according to actual conditions.

[0051] When the moving contact plate 141 is connected to the first terminal through the first connection member 180, and the stationary contact plate 142 is connected to the second terminal through the second connection member, when the load switch 110 is closed, the current forms a loop along the first terminal, the first connection member 180, the moving contact plate 141, the stationary contact plate 142, the second connection member and the second terminal, so that the current flows on the first connection member 180. A manganese copper plate 181 is provided on the first connection member 180, such as Figure 4 and Figure 5 As shown, a plurality of plug-in terminals 182 are provided on one side of the current flow direction at both ends of the manganese copper plate 181, and the plurality of plug-in terminals 182 are connected to the circuit board 170. The circuit board 170 detects the voltage between the two plug-in terminals 182, and can obtain the current on the moving touch plate 141 based on the voltage and resistance calculation, thereby realizing the acquisition of the current on the moving touch plate 141.

[0052] The purpose of the plug-in terminal 182 is described above by taking the detection of the current of the moving contact plate 141 as an example. Specifically, the number of the plug-in terminals 182 and the functions realized are not limited in the embodiment of the present application. Those skilled in the art can set the connection method of the plug-in terminal 182 and the manganese copper plate 181 according to actual conditions. Furthermore, a pin can be set on each of the moving and static wiring boards, and the pin is connected to the circuit board. After the load switch 110 is powered on, the contact closing or opening state can be determined by measuring the voltage difference between the two pins. If the voltage is zero, it means that the contact assembly 140 is closed. If the voltage is not zero, it means that the contact assembly 140 is in the opening state.

[0053] A manganese copper plate 181 is provided in the first connecting member 180. The manganese copper plate 181 is made of a manganese copper alloy formed by mixing manganese and copper. The manganese copper alloy has a small temperature coefficient, and the resistance changes less when the temperature changes, thereby improving the stability of the signal.

[0054] When the current detector is a transformer, the second terminal is connected to the indoor live wire. After passing through the user load, the current flows from the indoor neutral wire through the fourth terminal through the transformer to the third terminal and flows into the outdoor neutral wire. The third terminal and the fourth terminal are connected through a detection line, and the detection line and the second terminal have opposite current directions in the transformer, thereby realizing leakage detection.

[0055] In one possible implementation of the embodiment of the present application, Figure 1 and Figure 3The first wiring member 180 is shown to be located on a side of the load switch 110 away from the current detector 120 and perpendicular to the side of the electric meter with the wiring terminal. The first wiring member 180 is electrically connected to the first wiring terminal through a conductive member. The optional first wiring member 180 can also be directly processed and formed integrally with the conductive member. The first wiring member 180 is arranged on a side of the load switch 110 away from the current detector 120, so that the arrangement space of the first wiring member 180 is large and the manganese copper plate 181 on the first wiring member 180 can meet the corresponding resistance requirements. Further, the first wiring member 180 is arranged on a side close to the first wiring terminal for easy wiring.

[0056] Optionally, the moving contact plate 141 is connected to the magnetic drive assembly 130 through a contact bracket 145. The contact assembly 140 further includes a rotating assembly 143. The moving contact plate 141 includes at least two, and one end of each moving contact plate 141 is connected to the rotating assembly 143, and the other end is provided with a moving contact 144 that contacts the stationary contact plate 142. The driving direction of the magnetic drive assembly 130 is the same as the movement direction of the contact bracket 145, so that the overall spatial layout of the load switch 110 is more compact. Of course, in other embodiments, the driving direction of the magnetic drive assembly 130 may be perpendicular to the movement direction of the contact bracket 145, which is not limited here. The magnetic drive assembly 130 drives the moving contact plate 141 to move around the rotation axis of the rotating assembly 143 so that the moving contact plate contacts or separates from the stationary contact plate 142. Secondly, the moving contact 144 is only provided at one end of the moving contact plate 141, which is conducive to reducing the number of contacts and can reduce manufacturing costs.

[0057] The driving direction of the magnetic drive component 130 is the same as the movement direction of the contact bracket 145. The magnetic drive component 130 drives the contact bracket 145 to move along the second direction. One end of each moving touch plate 141 is connected to the rotating component 143. When the contact bracket 145 moves, the side of the moving touch plate 141 connected to the rotating component 143 can rotate, so that the resistance force between the side of the moving contact point 144 of the moving touch plate 141 and the static touch plate 142 can be adjusted.

[0058] Specifically, an elastic member is provided on the rotating assembly 143 , and two ends of the elastic member respectively abut against the contact bracket 145 and the moving contact plate 141 . When the magnetic drive assembly 130 pushes the moving contact 144 to contact the stationary contact plate 142 , the elastic member generates an elastic force that drives the moving contact 144 to abut against the stationary contact plate 142 .

[0059] The elastic member generates an elastic force that drives the moving contact plate 141 to set the moving contact 144 on one side toward the stationary contact plate 142, so that the moving contact 144 is in close contact with the stationary contact plate 142, thereby improving the stability of the moving contact plate 141 and the stationary contact plate 142 when in contact, and enhancing the ability to resist the repulsive impact and thermal shock of the short-circuit current, thereby improving the closing stability of the load switch 110.

[0060] Optionally, the electric meter 100 further includes a flexible connection 183, one end of which is connected to one end of the connection between the moving touch plate 141 and the rotating assembly 143, and the other end is connected to the first wiring member 180, and at least two moving touch plates 141 are connected in series or in parallel through the flexible connection 183.

[0061] As can be seen from the above, the movable touch plate 141 is driven by the magnetic drive assembly 130 to approach or move away from the stationary touch plate 142. In order to achieve the connection between the movable touch plate 141 and the first wiring member 180, a flexible connection 183 is used to connect the movable touch plate 141 and the first wiring member 180.

[0062] At least two moving touch plates 141 are connected in series or in parallel through a soft connection 183. The multiple moving touch plates 141 in parallel can shunt the current, and the current at the moving contact point is reduced. Compared with a single moving touch plate 141, the heat dissipation area of ​​the multiple moving touch plates 141 is increased, which is beneficial to improving the thermal stability of the moving touch plates 141 and avoiding excessive temperature of the moving touch plates 141. In addition, by setting in parallel, each moving touch plate 141 carries part of the current, so that the repulsive force between the moving touch plate 141 and the static touch plate 142 is reduced exponentially, which is beneficial to the stable contact of the moving and static touch plates. The series setting forms multiple breakpoints in the entire current loop. Compared with a single breakpoint, the opening distance of the moving touch plate 141 is increased exponentially, and the dielectric performance is significantly improved. At the same time, the arc is divided into multiple sections, and the total arc voltage is increased, which can significantly improve the arc extinguishing effect.

[0063] In one achievable manner of the embodiment of the present application, a magnetizing component 190 is further provided on the contact assembly 140, and the magnetizing component 190 includes a first magnetizing block 191 provided on the moving touch plate 141 and a second magnetizing block 192 provided on one side of the stationary touch plate 142, the first magnetizing block 191 and the second magnetizing block 192 interact with each other to increase the contact force between the moving touch plate 141 and the stationary touch plate 142, when the moving touch plate 141 contacts the stationary touch plate 142, the current in the moving touch plate 141 will generate a circular magnetic field, and the magnetic field forms a magnetic flux path through the first magnetizing block 191 and the second magnetizing block 192, and the magnetic flux causes the first magnetizing block 191 and the second magnetizing block 192 to generate an electromagnetic force that attracts each other, and generally speaking, the larger the current, the larger the electromagnetic force between the first magnetizing block and the second magnetizing block, thereby enhancing the short-circuit and large current resistance capability of the contact assembly 140.

[0064] When the moving touch plate 141 contacts the stationary touch plate 142, the first magnetizing block 191 and the second magnetizing block 192 attract each other. Since the first magnetizing block 191 is arranged on the moving touch plate 141 and the second magnetizing block 192 is arranged on one side of the stationary touch plate 142, the moving touch plate 141 drives the first magnetizing block 191 to approach the second magnetizing block 192, thereby increasing the contact force between the moving touch plate 141 and the stationary touch plate 142, improving the stability of the moving touch plate 141 and the stationary touch plate 142 when in contact, thereby improving the closing stability of the load switch 110.

[0065] In one possible implementation of the embodiment of the present application, Figure 1 , Figure 2 and Figure 3 As shown, the load switch 110 further includes a circuit board 170 disposed on one side of the load switch 110 and the current detector 120 along the third direction, and the load switch 110 and the current detector 120 are disposed on a board surface of the circuit board 170 .

[0066] The circuit board 170 is connected to the load switch 110 and the current detector 120 respectively, so as to control the opening or closing of the load switch 110 according to the result of the current detector 120 .

[0067] The circuit board 170 is arranged on one side of the load switch 110 and the current detector 120 along the third direction, which can facilitate the connection between the circuit board 170 and the load switch 110, the first wiring member 180 and the current detector 120. Since the circuit board 170 is in a plate shape and is arranged on one side of the load switch 110 and the current detector 120 along the third direction, the layout inside the electric meter 100 is more reasonable.

[0068] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electric meter, characterized in that: The invention comprises a load switch (110) and a current detector (120) arranged along a first direction, wherein the load switch (110) comprises a magnetic drive component (130) and a contact component (140), wherein the contact component (140) comprises a stationary contact plate (142) and a moving contact plate (141) connected to the magnetic drive component (130), wherein the magnetic drive component (130) drives the moving contact plate (141) to contact or separate from the stationary contact plate (142), and the load switch (110) further comprises an arc extinguishing chamber (150) arranged on one side of the stationary contact plate (142), and the arc extinguishing chamber (150) and the current detector (120) are arranged on the same side of the magnetic drive component (130).

2. The electric meter according to claim 1, characterized in that The driving direction of the magnetic driving component (130) is a second direction, so as to drive the moving touch plate (141) along the second direction, the moving touch plate (141) moves to contact or separate from the stationary touch plate (142), and the first direction is perpendicular to the second direction.

3. The electric meter according to claim 2, characterized in that: A plurality of connection terminals (160) are arranged on one side of the load switch (110) and the current detector (120) along the second direction, the plurality of connection terminals (160) are arranged in sequence along the first direction, the plurality of connection terminals (160) are electrically connected to the load switch (110) respectively, and the contact assembly (140) is located between the magnetic drive assembly (130) and the connection terminals (160).

4. The electric meter according to claim 3, characterized in that: The wiring terminal (160) comprises a first wiring terminal, a second wiring terminal, a third wiring terminal and a fourth wiring terminal which are sequentially arranged along the arrangement direction of the load switch (110) and the current detector (120); the moving touch plate (141) is connected to the first wiring terminal via a first wiring member (180); the stationary touch plate (142) is connected to the second wiring terminal via a second wiring member; the third wiring terminal and the fourth wiring terminal are electrically connected via a conductive member and pass through the current detector (120); and a manganese copper plate is provided on the first wiring member (180).

5. The electric meter according to claim 4, characterized in that: The first connecting member (180) is located on a side of the load switch (110) away from the current detector (120), and the first connecting member (180) is electrically connected to the first connecting terminal (160).

6. The electric meter according to claim 4 or 5, characterized in that: The movable contact plate (141) is connected to the magnetic drive assembly (130) via a contact bracket (145); the contact assembly (140) further comprises a rotating assembly (143); the movable contact plate (141) comprises at least two, and one end of each movable contact plate (141) is connected to the rotating assembly (143), and the other end is provided with a movable contact (144) which is in contact with a static contact on the static contact plate (142); the driving direction of the magnetic drive assembly (130) is the same as the moving direction of the contact bracket (145); the magnetic drive assembly (130) drives the movable contact plate (141) to move around the rotating axis of the rotating assembly (143) so that the movable contact (144) contacts or separates from the static contact plate (142).

7. The electric meter according to claim 6, characterized in that An elastic member is provided on the rotating assembly (143), and two ends of the elastic member respectively abut against the contact support (145) and the moving contact plate (141), and when the magnetic drive assembly (130) pushes the moving contact (144) to contact the stationary contact plate (142), the elastic member generates an elastic force that drives the moving contact (144) to abut against the stationary contact plate (142).

8. The electric meter according to claim 7, characterized in that It also includes a soft connection (183), one end of the soft connection (183) is connected to one end of the moving touch plate (141), and the other end is connected to the first wiring member (180), and at least two moving touch plates (141) are connected in series or in parallel via the soft connection (183).

9. The electric meter according to any one of claims 1 to 5, characterized in that: The contact assembly (140) is also provided with a magnetizing assembly (190), the magnetizing assembly (190) comprising a first magnetizing block (191) provided on the moving touch plate (141) and a second magnetizing block (192) provided on one side of the stationary touch plate (142), the first magnetizing block (191) and the second magnetizing block (192) interacting with each other to increase the contact force between the moving touch plate (141) and the stationary touch plate (142).

10. The electric meter according to any one of claims 1 to 5, characterized in that: It also includes a shielding plate that is arranged in close contact with the side surface of the magnetic drive component (130), the shielding plate encloses the magnetic drive component (130), and an air gap is formed between at least one of the shielding plates and the other shielding plates.

11. The electric meter according to claim 1, characterized in that It also includes a circuit board (170) arranged on one side of the load switch (110) and the current detector (120) along a third direction, and the load switch (110) and the current detector (120) are arranged on the board surface of the circuit board (170).

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