Electric meter

Abstract

An ammeter relates to the technical field of low-voltage apparatuses. The ammeter comprises a first housing, a load switch and a current detection element which are respectively arranged in the first housing, and a wiring terminal group arranged on the first housing. The wiring terminal group and the current detection element are arranged along a first direction, the load switch comprises a contact mechanism and a magnetic control mechanism which are arranged along a second direction, the first direction is perpendicular to the second direction, and the current detection element is arranged between the magnetic control mechanism and the wiring terminal group. The electric meter is reasonable in layout, the internal space of the electric meter can be effectively utilized, the line connection mode of the load switch can be simplified, and the working reliability of the electric meter is improved.

Description

Technical Field

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

[0002] Load switch is the main component of today's smart meters. It is a control component that uses the interaction and relative movement of electromagnetic coils and permanent magnets to close and open the contact mechanism under the action of a driving control signal. It can remain in the on or off state after the driving control signal disappears.

[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. However, due to the unreasonable layout of various components in the electric meter and the layout of various components of the load switch, the existing electric meter is prone to a large overall volume of the load switch; secondly, it will make the wiring of the load switch and the terminal more complicated and easily interfered by the magnetic field outside the electric meter. This will cause the load switch's magnetic system to control the connection or disconnection of the load switch's contact mechanism to be unstable, and it is easy to cause working failures. Utility Model Content

[0004] The utility model aims to provide an electric meter with reasonable layout, which can effectively utilize the internal space of the electric meter, simplify the line connection mode of the load switch, and improve the working reliability of the electric meter.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In one aspect of the utility model, an electric meter is provided, which includes a first housing, a load switch and a current detection element respectively arranged in the first housing, and a terminal group arranged on the first housing; the terminal group and the current detection element are arranged along a first direction, the load switch includes a contact mechanism and a magnetic control mechanism arranged along a second direction, the first direction and the second direction are arranged vertically, and the current detection element is arranged between the magnetic control mechanism and the terminal group. The layout of the electric meter is reasonable, the internal space of the electric meter can be effectively utilized, and the line connection method of the load switch can be simplified, thereby improving the working reliability of the electric meter.

[0007] Optionally, the distance between the magnetic control mechanism and the first side wall of the first shell is greater than the distance between the contact mechanism and the first side wall, the first side wall is a side wall of the first shell distributed along the second direction, and the first side wall is close to the live wire group side of the terminal group.

[0008] Optionally, the magnetic control mechanism comprises a coil, and the axial direction of the coil wound around the helical line is parallel to the first direction or the second direction.

[0009] Optionally, the load switch further includes an arc extinguishing chamber, the arc extinguishing chamber and the current detection element are arranged in sequence along the second direction, and the contact mechanism and the arc extinguishing chamber are arranged in sequence along the first direction.

[0010] Optionally, the load switch also includes a transmission assembly, which is respectively connected to the moving contact of the magnetic control mechanism and the contact mechanism; the transmission assembly includes a first transmission member, a second transmission member transmission-connected to the first transmission member, an adapter, and a connecting rod respectively connected to the second transmission member and the adapter; the magnetic control mechanism drives the first transmission member to move, the first transmission member can drive the adapter to move through the second transmission member and the connecting rod, and the movement of the adapter can drive the moving contact to move.

[0011] Optionally, the first transmission member is a transmission rod provided with first teeth, the magnetic control mechanism is used to drive the transmission rod to move, and the second transmission member is provided with second teeth meshing with the first teeth.

[0012] Optionally, the first transmission member is a swinging member, the magnetic control mechanism is used to drive the swinging member to move, the swinging member is provided with a clamping groove, the second transmission member is provided with a connecting member that cooperates with the clamping groove, or the second transmission member is provided with a clamping groove, and the swinging member is provided with a connecting member that cooperates with the clamping groove.

[0013] Optionally, the electric meter further comprises a micro switch, which is arranged at one side of the transmission assembly, and the movement of the transmission assembly acts on the micro switch to feedback the working state of the contact mechanism.

[0014] Optionally, the microswitch is arranged on one side of the first transmission member, and the moving contact, the microswitch, and the magnetic control mechanism are arranged in sequence along the second direction; or the microswitch is arranged on one side of the connecting rod, and the moving contact and the microswitch are arranged in sequence along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0015] Optionally, the terminal group includes a first terminal, a second terminal, a third terminal and a fourth terminal arranged along the second direction; the moving contact of the contact mechanism is connected to the first terminal through a first connecting component, and the static contact of the contact mechanism is connected to the second terminal through a second connecting component; the first connecting component and the moving contact are interconnected to form a U-shaped structure.

[0016] Optionally, the arc extinguishing chamber is located below the opening of the U-shaped structure, and the load switch further includes a magnetizing component, which is arranged on a side of the moving contact of the contact mechanism where the contact point is arranged.

[0017] The beneficial effects of the utility model include:

[0018] The electric meter provided in the present application includes a first shell, a load switch and a current detection element respectively arranged in the first shell, and a terminal group arranged on the first shell; the terminal group and the current detection element are arranged along a first direction, the load switch includes a contact mechanism and a magnetic control mechanism arranged along a second direction, the first direction and the second direction are arranged vertically, and the current detection element is arranged between the magnetic control mechanism and the terminal group. The present application arranges the contact mechanism and the magnetic control mechanism along the second direction, arranges the terminal group and the current detection element along the first direction, and arranges the current detection element between the terminal group and the magnetic control mechanism. In this way, the terminal group is located on the outside of the load switch, which is convenient for wiring the load switch; the magnetic control mechanism and the contact mechanism are arranged side by side, which is conducive to the driving of the contact mechanism by the magnetic control mechanism; the current detection element is arranged between the magnetic control mechanism and the terminal group, which can facilitate the connection of the line connected to the contact mechanism through the current detection element and the terminal group, which can simplify the line wiring method and facilitate the shortening of the line arrangement. In this way, the problem of line instability caused by complex line connection in the prior art can be improved, and the working reliability of the electric meter can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, 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 utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 One of the structural schematic diagrams of the electric meter provided by the embodiment of the utility model;

[0021] Figure 2 The second structural schematic diagram of the electric meter provided by the embodiment of the utility model;

[0022] Figure 3 The third structural diagram of the electric meter provided by the embodiment of the utility model;

[0023] Figure 4 A fourth structural diagram of an electric meter provided in an embodiment of the utility model;

[0024] Figure 5 One of the structural schematic diagrams of the load switch and the current detection element provided in the embodiment of the utility model;

[0025] Figure 6 The second structural diagram of the load switch and the current detection element provided by the embodiment of the utility model;

[0026] Figure 7One of the structural schematic diagrams of the load switch provided in the embodiment of the utility model;

[0027] Figure 8 The second structural diagram of the load switch provided by the embodiment of the utility model;

[0028] Fig. 9 One of the structural schematic diagrams of the transmission assembly provided in the embodiment of the utility model;

[0029] Fig.10 The second structural schematic diagram of the transmission assembly provided by the embodiment of the utility model;

[0030] Fig.11 The third structural diagram of the load switch provided by the embodiment of the utility model;

[0031] Fig.12 The fourth structural schematic diagram of the load switch provided in the embodiment of the utility model.

[0032] Icons: 10-first housing; 20-load switch; 21-contact mechanism; 211-moving contact; 212-static contact; 22-magnetic control mechanism; 23-arc extinguishing chamber; 24-first connecting assembly; 25-second connecting assembly; 26-magnetizing member; 27-second housing; 28-transmission assembly; 281-first transmission member; 2811-first tooth; 2812-clamping groove; 282-second transmission member; 2821-second tooth; 2822-connecting member; 283-adapter; 284-connecting rod; 29-shielding cover; 30-current detection element; 40-terminal group; 41-first terminal; 42-second terminal; 43-third terminal; 44-fourth terminal; a-first direction; b-second direction; i-axis direction of the helix; 50-circuit board; 60-micro switch. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] 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.

[0036] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] In addition, the terms "parallel" and "perpendicular" do not mean that the two components are absolutely parallel or absolutely perpendicular, but can be approximately parallel or approximately perpendicular. For example, if two components are arranged "parallel", it means that the positional relationship of the two components can be absolutely parallel or approximately parallel; if two components are arranged "perpendicularly", it means that the positional relationship of the two components can be absolutely perpendicular or approximately perpendicular.

[0038] In the description of the present invention, it is also necessary to explain 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 components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Please refer to Figure 1 and Figure 2 This embodiment provides an electric meter, which includes a first housing 10, a load switch 20 and a current detection element 30 respectively arranged in the first housing 10, and a terminal group 40 arranged on the first housing 10; the terminal group 40 and the current detection element 30 are arranged along a first direction a, the load switch 20 includes a contact mechanism 21 and a magnetic control mechanism 22 arranged along a second direction b, the first direction a and the second direction b are arranged vertically, and the current detection element 30 is arranged between the magnetic control mechanism 22 and the terminal group 40. The layout of the electric meter is reasonable, the internal space of the electric meter can be effectively utilized, and the line connection method of the load switch 20 can be simplified, thereby improving the working reliability of the electric meter.

[0040] The electric meter includes a first housing 10, a load switch 20, a current detection element 30 and a terminal block 40. In this embodiment, the load switch 20 and the current component are both arranged in the first housing 10, and the terminal block 40 is arranged on one side of the first housing 10. It should be noted that the terminal block 40 is arranged on one side of the first housing 10, which is convenient for wiring the components in the electric meter through the terminal block 40.

[0041] The load switch 20 includes a contact mechanism 21 and a magnetic control mechanism 22, wherein the contact mechanism 21 includes a moving contact 211 and a stationary contact 212. When the magnetic control mechanism 22 is energized, it drives the moving contact 211 of the contact mechanism 21 to move, thereby connecting or disconnecting the moving contact 211 and the stationary contact 212.

[0042] In this embodiment, the contact mechanism 21 and the magnetic control mechanism 22 are arranged side by side along the second direction b. Figure 2 As shown, in this way, the magnetic control mechanism 22 is convenient for driving the moving contact 211 to move.

[0043] In addition, the above-mentioned terminal group 40 and current detection element 30 are arranged along the first direction a, and the current detection element 30 is arranged between the magnetic control mechanism 22 and the terminal group 40. In the present application, the terminal group 40 and the current detection element 30 are arranged along the first direction a, so that when the wiring is performed, when the line connected to the static contact 212 is connected to the terminal group 40, since the current detection element 30 is located between the magnetic control mechanism 22 and the terminal group 40, one end of the line is connected to the contact mechanism 21, and the other end can be directly connected to the terminal group 40 through the current detection element 30, so that the line connection is convenient, the line arrangement can be simplified and the line path can be shortened, and the spatial layout in the first housing 10 of the electric meter is more reasonable.

[0044] To summarize, the electric meter provided in the present application includes a first shell 10, a load switch 20 and a current detection element 30 respectively arranged in the first shell 10, and a terminal group 40 arranged on the first shell 10; the terminal group 40 and the current detection element 30 are arranged along a first direction a, the load switch 20 includes a contact mechanism 21 and a magnetic control mechanism 22 arranged along a second direction b, the first direction a and the second direction b are arranged vertically, and the current detection element 30 is arranged between the magnetic control mechanism 22 and the terminal group 40. The present application arranges the contact mechanism 21 and the magnetic control mechanism 22 along the second direction b, arranges the terminal group 40 and the current detection element 30 along the first direction a, and arranges the current detection element 30 between the terminal group 40 and the magnetic control mechanism 22. In this way, the terminal group 40 is located on the outside of the load switch 20, which is convenient for wiring the load switch 20; the magnetic control mechanism 22 and the contact mechanism 21 are arranged side by side, which is conducive to the driving of the contact mechanism 21 by the magnetic control mechanism 22; the current detection element 30 is arranged between the magnetic control mechanism 22 and the terminal group 40, which can facilitate the connection of the line connected to the contact mechanism 21 through the current detection element 30 and the terminal group 40, which can simplify the line wiring method and facilitate the shortening of the line arrangement. In this way, the problem of line instability caused by complex line connection in the prior art can be improved, and the working reliability of the electric meter can be improved.

[0045] like Figure 2 and Figure 3 As shown, in a feasible implementation, the distance between the magnetic control mechanism 22 and the first side wall of the first housing 10 is greater than the distance between the contact mechanism 21 and the first side wall, the first side wall is a side wall of the first housing 10 distributed along the second direction b, and the first side wall is close to the live wire group side of the terminal group 40. It should be noted that the terminal group 40 includes a live wire group and a neutral wire group arranged in sequence along the second direction b, the first side wall is a side wall distributed along the second direction b and close to the live wire group side of the terminal group 40, corresponding to Figure 1 and Figure 2 In the embodiment, the first side wall is the left side wall of the first shell 10 .

[0046] That is to say, the magnetic control mechanism 22 is closer to the inside of the electric meter than the contact mechanism 21, while the contact mechanism 21 is closer to the left wall of the electric meter. The present application sets the magnetic control mechanism 22 close to the inside of the first housing 10, so that the magnetic control mechanism 22 can better avoid interference from the external magnetic field, improve the anti-magnetic interference performance of the load switch 20, and make the action of the contact mechanism 21 more stable.

[0047] In one embodiment, the magnetic control mechanism 22 at least includes a coil, and the axis direction i of the coil wound around the spiral line is aligned with the first direction a (eg Fig.12as shown) or parallel to the second direction b (as shown Figure 7 As shown), specifically, the coil of the magnetic control mechanism 22 is wound along the coil frame, and its winding trajectory is a spiral line, and finally there is an axial direction i of the spiral line. In this way, the magnetic control mechanism 22 is more direct, more labor-saving and space-saving when driving the contact mechanism 21.

[0048] In order to facilitate the extinguishing of the arc generated when the moving contact 211 and the static contact 212 are opened as soon as possible, thereby improving the working reliability and service life of the contact mechanism 21, the load switch 20 of the present application may also include an arc extinguishing chamber 23, the arc extinguishing chamber 23 and the current detection element 30 are arranged in sequence along the second direction b, and the contact mechanism 21 and the arc extinguishing chamber 23 are arranged in sequence along the first direction a. The arc extinguishing chamber 23 is used to introduce the arc therein and extinguish the arc.

[0049] The arc extinguishing chamber 23 is arranged near the moving contact 211 and the static contact 212. Of course, in order to facilitate the introduction of the arc into the arc extinguishing chamber 23, the load switch 20 can also include an arc striking plate arranged between the static contact 212 and the moving contact 211. One end of the arc striking plate is arranged near the moving contact 211 and the static contact 212, and the other end is connected to the arc extinguishing chamber 23, which is used to introduce the arc into the arc extinguishing chamber 23.

[0050] The arc extinguishing chamber 23 is located between the contact mechanism 21 and the terminal block 40 , so that the space below the contact mechanism 21 can be effectively utilized, thereby improving the compactness of the structure of the electric meter.

[0051] Optionally, the load switch 20 may further include a transmission assembly 28, which is connected to the magnetic control mechanism 22 and the moving contact 211 of the contact mechanism 21 respectively; Fig. 9 and Fig.10 As shown, the transmission assembly 28 includes a first transmission member 281, a second transmission member 282 transmission-connected to the first transmission member 281, a conversion member 283, and a connecting rod 284 respectively connected to the second transmission member 282 and the conversion member 283; the magnetic control mechanism 22 drives the first transmission member 281 to move, and the first transmission member 281 can drive the conversion member 283 to move through the second transmission member 282 and the connecting rod 284, and the movement of the conversion member 283 can drive the moving contact 211 to move.

[0052] It should be noted that the magnetic control mechanism 22 drives the first transmission member 281 to move, the first transmission member 281 can drive the second transmission member 282 to move, the movement of the second transmission member 282 can drive the adapter 283 to move through the connecting rod 284, and the movement of the adapter 283 can drive the moving contact 211 to move, so that the opening and closing of the contact mechanism 21 can be realized.

[0053] The present application does not impose any specific restrictions on the structural forms of the first transmission member 281 and the second transmission member 282. For example, in a feasible implementation, Fig. 9 As shown, the first transmission member 281 may be a transmission rod provided with first teeth 2811 , the magnetic control mechanism 22 is used to drive the transmission rod to move, and the second transmission member 282 is provided with second teeth 2821 meshing with the first teeth 2811 .

[0054] In this way, the magnetic control mechanism 22 drives the transmission rod to move, and the transmission rod can drive the second transmission member 282 to move through the meshing of the first teeth 2811 with the second teeth 2821 of the second transmission member 282 .

[0055] In another possible implementation, Fig.10 As shown, the first transmission member 281 can also be a swing member, the magnetic control mechanism 22 is used to drive the swing member to move, the swing member is provided with a clamping groove 2812, the second transmission member 282 is provided with a connecting member 2822 that matches the clamping groove 2812, or the second transmission member 282 is provided with a clamping groove, and the swing member is provided with a connecting member that matches the clamping groove. The specific clamping groove 2812 can be as follows Fig.10 The semi-enclosed slot shown can also be Fig.12 Closed slot shown.

[0056] In this way, the magnetic control mechanism 22 drives the swinging member to move. In one specific embodiment, a permanent magnet may be provided on the swinging member. Through the magnetic attraction of the permanent magnet, the magnetic steel and the magnetic yoke are kept in a normally open or normally closed state of the corresponding contact mechanism 21. When triggered by a pulse electrical signal, the coil in the magnetic control mechanism 22 generates a closed magnetic flux in a direction opposite to that of the permanent magnet, so that the originally fitted magnetic steel and the magnetic yoke form reverse magnetic poles, driving the swinging member to swing clockwise or counterclockwise. The swinging member can drive the second transmission member 282 to move through the cooperation of the clamping groove 2812 and the connecting member 2822, thereby realizing the state switching of the contact mechanism 21.

[0057] Of course, the matching manner of the first transmission member 281 and the second transmission member 282 is only an example and is not a limitation of the present application. In practical applications, any of the above structural forms may be adopted, or other feasible structural forms may be adopted.

[0058] Please refer to Figure 8 As shown, the electric meter further includes a micro switch 60, which is disposed on one side of the transmission assembly 28. The movement of the transmission assembly 28 acts on the micro switch 60, and the micro switch 60 is used to feedback the working state of the contact mechanism 21. In this way, the space on one side of the transmission assembly 28 can be better utilized, and the setting of the micro switch 60 can be avoided from occupying too much space of the load switch 20.

[0059] Optionally, the micro switch 60 is disposed on one side of the first transmission member 281, and the moving contact 211, the micro switch 60, and the magnetic control mechanism 22 are arranged along the second direction b, such as Fig.12 Or the micro switch 60 is disposed on one side of the connecting rod 284, and the moving contact 211 and the micro switch 60 are arranged in sequence along the third direction, and the first direction a, the second direction b and the third direction are perpendicular to each other, such as Figure 8 and Fig. 9 shown.

[0060] To facilitate the control of components such as the load switch 20 and the current detection element 30, the electric meter may further include a circuit board 50 located in the first housing 10, and the load switch 20 and the current detection element 30 are both connected to the circuit board 50. Figure 4 and Figure 5 shown.

[0061] When the electric meter further includes a circuit board 50, the micro switch 60 may also be connected to the circuit board 50, and the micro switch 60 may be located between the circuit board 50 and the load switch 20. The micro switch 60 is used to feedback the on or off state of the load switch 20.

[0062] The micro switch 60 is arranged between the circuit board 50 and the load switch 20, and is arranged close to the contact mechanism 21. The contact mechanism 21 or the connecting rod 284 is driven to act on the micro switch 60, so that the micro switch 60 is actuated, and then the user can obtain the on or off signal of the load switch 20 according to the signal feedback of the micro switch 60.

[0063] Optionally, the terminal group 40 includes a first terminal 41, a second terminal 42, a third terminal 43 and a fourth terminal 44 arranged along the second direction b; further, the first terminal 41 and the second terminal 42 constitute a live wire group. The moving contact 211 of the contact mechanism 21 is connected to the first terminal 41 through the first connecting component 24, and the static contact 212 of the contact mechanism 21 is connected to the second terminal 42 through the second connecting component 25; the first connecting component 24 and the moving contact 211 are connected to each other to form a U-shaped structure.

[0064] The above-mentioned connection terminal group 40 is located at one side of the first housing 10. That is, the connection terminal group 40 is arranged at one side of the first housing 10, so that it is more convenient to connect the connection terminal group 40.

[0065] The third terminal 43 and the fourth terminal 44 are connected through the third connecting component in a feasible implementation. The second connecting component 25 and the third connecting component are both inserted into the current detection element 30, and the second connecting component 25 enters from the first end of the current detection element 30 and exits from the second end, while the third connecting component enters from the second end of the current detection element 30 and exits from the first end. In this way, the current directions of the second connecting component 25 and the third connecting component should be exactly opposite when passing through the current detection element 30.

[0066] After the moving contact 211 and the stationary contact 212 are connected, the current flowing through the moving contact 211 and the stationary contact 212 in the load switch 20 will pass through the second connecting component 25 through the current detection element 30 and then flow into the second terminal 42. At the same time, the third connecting component connecting the third terminal 43 and the fourth terminal 44 is used, and the current direction of the third connecting component is opposite to the current direction of the second connecting component 25. Through two circuits (i.e., the second connecting component 25 and the third connecting component) through the current detection element 30, the power theft and leakage detection is performed. Under normal circumstances, at the same time, the currents flowing through the two circuits in the center of the current detection element 30 are opposite in direction and the same in magnitude. At this time, the sum of the magnetic flux in the current detection element 30 is approximately zero. When a line fault occurs, the magnitudes of the two currents are different, and the magnetic flux in the current detection element 30 is not zero.

[0067] Of course, in other embodiments, the current detection element 30 and the third connecting component can be integrated into one body for leakage detection of the electric meter, which is not limited here.

[0068] In this embodiment, optionally, Figure 3 and Figure 4 As shown, the projection of the current detection element 30 on the terminal group 40 along the first direction a covers at least a portion of the second terminal 42 and at least a portion of the third terminal 43. That is, the current detection element 30 is projected onto the terminal group 40 along the first direction a, and the resulting projection image at least covers the second terminal 42 and at least a portion of the third terminal 43, so that the length of the circuit loop can be shortened, making the line connection shorter and the resistance smaller.

[0069] The first connection component 24 is connected to the moving contact 211 to form a U-shaped structure. In this embodiment, the first connection component 24 may include a first busbar and a flexible connector connected to the first busbar, one end of the first busbar is connected to one end of the flexible connector, and the other end is connected to the first terminal 41, and the other end of the flexible connector is connected to the end of the moving contact 211 away from the contact point, so that the moving contact 211 can swing to achieve contact or separation with the static contact 212. Figure 8As shown, the present application sets the moving contact 211 of the load switch 20 and the first connecting component 24 into a U-shaped structure, so that the current flowing through the moving contact 211 and the first busbar are in opposite directions, and then a repulsive force is generated between the two, so that the moving contact 211 and the static contact 212 are further abutted, thereby enhancing the short-term resistance performance; further, the moving contact 211 is connected to the first terminal 41 through the first busbar and the flexible connector, which is also conducive to having sufficient space on the first busbar to set up manganese copper parts for detection, meeting the basic performance requirements of the electric meter, and making the electric meter space layout more compact. Of course, in other embodiments, the static contact 212 of the contact mechanism 21 can also be connected to the first terminal 41 through the first connecting component 24, and the moving contact 211 of the contact mechanism 21 can be connected to the second terminal 42 through the second connecting component 25, which is not limited here.

[0070] Optionally, see Figure 6 and Figure 7 The arc extinguishing chamber 23 is located below the opening of the U-shaped structure. The load switch 20 further includes a magnetizing component 26 . The magnetizing component 26 is disposed on a side of the moving contact 211 of the contact mechanism 21 where a contact point is disposed.

[0071] It should be noted that the load switch 20 also includes the above-mentioned magnetizing member 26, which is to further improve the short-term withstand performance of the load switch 20. The magnetizing member 26 is arranged on the side where the contact point is arranged on the moving contact 211 of the contact mechanism 21. In this way, the present application can improve the magnetic field through the arrangement of the magnetizing member 26, further reduce the electric repulsion during short-term withstand, and enhance the short-term withstand performance.

[0072] In addition, in this embodiment, the arc extinguishing chamber 23 can be located in a semi-enclosed space formed by the U-shaped structure, so that the space of the load switch 20 can be effectively utilized.

[0073] In addition, in order to further enhance the short-circuit resistance performance of the load switch 20, the movable contact 211 of the load switch 20 of the present application can be provided with multiple, such as Figure 6 shown.

[0074] The load switch 20 further includes a second housing 27 for accommodating the contact mechanism 21 and the magnetic control mechanism 22 . The magnetizing member 26 can be disposed in the second housing 27 and located on a side of the moving contact 211 where the contact point is disposed.

[0075] In order to reduce the impact of the external environment on the load switch 20, such as Fig.11 As shown, a shielding cover 29 is also sleeved on the second housing 27 of the load switch 20, and the shielding cover 29 is preferably U-shaped.

[0076] Furthermore, the shielding cover 29 at least covers the magnetic control mechanism 22 of the load switch 20. Fig.11 shown.

[0077] The above description is only an optional embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0078] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

Claims

1. An electric meter, characterized in that: The invention comprises a first housing (10), a load switch (20) and a current detection element (30) respectively arranged in the first housing (10), and a terminal block group (40) arranged on the first housing (10); the terminal block group (40) and the current detection element (30) are arranged along a first direction (a); the load switch (20) comprises a contact mechanism (21) and a magnetic control mechanism (22) arranged along a second direction (b); the first direction (a) and the second direction (b) are arranged vertically; and the current detection element (30) is arranged between the magnetic control mechanism (22) and the terminal block group (40).

2. The electric meter according to claim 1, characterized in that: The distance between the magnetic control mechanism (22) and the first side wall of the first shell (10) is greater than the distance between the contact mechanism (21) and the first side wall, the first side wall being a side wall of the first shell (10) distributed along the second direction (b), and the first side wall being close to the live wire group side of the terminal group (40).

3. The electric meter according to claim 2, characterized in that: The magnetic control mechanism (22) comprises a coil, wherein the axial direction (i) of the coil wound around the helical line is parallel to the first direction (a) or the second direction (b).

4. The electric meter according to any one of claims 1 to 3, characterized in that: The load switch (20) further comprises an arc extinguishing chamber (23), wherein the arc extinguishing chamber (23) and the current detection element (30) are arranged in sequence along the second direction (b), and the contact mechanism (21) and the arc extinguishing chamber (23) are arranged in sequence along the first direction (a).

5. The electric meter according to any one of claims 1 to 3, characterized in that: The load switch (20) further comprises a transmission assembly (28), wherein the transmission assembly (28) is respectively connected to the magnetic control mechanism (22) and the moving contact (211) of the contact mechanism (21); the transmission assembly (28) comprises a first transmission member (281), a second transmission member (282) transmission-connected to the first transmission member (281), a conversion member (283), and a connecting rod (284) respectively connected to the second transmission member (282) and the conversion member (283); the magnetic control mechanism (22) drives the first transmission member (281) to move, and the first transmission member (281) can drive the conversion member (283) to move through the second transmission member (282) and the connecting rod (284), and the movement of the conversion member (283) can drive the moving contact (211) to move.

6. The electric meter according to claim 5, characterized in that: The first transmission member (281) is a transmission rod provided with first teeth (2811), the magnetic control mechanism (22) is used to drive the transmission rod to move, and the second transmission member (282) is provided with second teeth (2821) meshing with the first teeth (2811).

7. The electric meter according to claim 5, characterized in that: The first transmission member (281) is a swing member, the magnetic control mechanism (22) is used to drive the swing member to move, the swing member is provided with a clamping groove (2812), the second transmission member (282) is provided with a connecting member (2822) that cooperates with the clamping groove (2812), or the second transmission member (282) is provided with a clamping groove, and the swing member is provided with a connecting member that cooperates with the clamping groove.

8. The electric meter according to claim 5, characterized in that: The electric meter further comprises a micro switch (60), wherein the micro switch (60) is arranged on one side of the transmission assembly (28), and the movement of the transmission assembly (28) acts on the micro switch (60) to provide feedback on the working state of the contact mechanism (21).

9. The electric meter according to claim 8, characterized in that: The micro switch (60) is arranged on one side of the first transmission member (281), and the moving contact (211), the micro switch (60), and the magnetic control mechanism (22) are arranged in sequence along the second direction (b); or the micro switch (60) is arranged on one side of the connecting rod (284), and the moving contact (211) and the micro switch (60) are arranged in sequence along a third direction, and the first direction (a), the second direction (b), and the third direction are perpendicular to each other.

10. The electric meter according to claim 4, characterized in that: The terminal group (40) comprises a first terminal (41), a second terminal (42), a third terminal (43) and a fourth terminal (44) arranged along the second direction (b); the moving contact (211) of the contact mechanism (21) is connected to the first terminal (41) via a first connecting component (24), and the stationary contact (212) of the contact mechanism (21) is connected to the second terminal (42) via a second connecting component (25); the first connecting component (24) and the moving contact (211) are connected to each other to form a U-shaped structure.

11. The electric meter according to claim 10, characterized in that: The arc extinguishing chamber (23) is located below the opening of the U-shaped structure. The load switch (20) further comprises a magnetizing component (26). The magnetizing component (26) is arranged on a side of the moving contact (211) of the contact mechanism (21) where a contact point is arranged.

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