Electric energy meter

Abstract

The utility model relates to the technical field of electric energy meters, in particular to an electric energy meter. The electric energy meter comprises a base and a circuit board. The base is provided with a clamping plate, one end of the clamping plate is connected with the side wall of the base, the other end of the clamping plate is provided with a clamping piece and a limiting part which are oppositely arranged in the first direction, and the first direction is parallel to the bottom face direction of the base. And the circuit board is limited between the clamping piece and the limiting part, so that the circuit board is parallel to the bottom surface of the base. The electric energy meter is simple in structure, convenient to demould and low in processing cost, the base and the circuit board are easy to assemble, and the working efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric energy meters, in particular to an electric energy meter. Background Art

[0002] An electric energy meter is an instrument used to measure electric energy, also known as a watt-hour meter, a kilowatt-hour meter.

[0003] Generally, an electric energy meter includes a housing and a circuit board. The circuit board is installed in the housing and is electrically connected to the external three-phase power supply line. The housing structure in the prior art is relatively complex. On the one hand, this will cause the mold structure for processing the housing to be complex, increasing the cost of the mold. On the other hand, the complex housing is not easy to demold, reducing the work efficiency. At the same time, the current housing and the circuit board are not easy to assemble, which is time-consuming and laborious.

[0004] Therefore, it is urgent to design an electric energy meter to solve the above technical problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an electric energy meter with a simple structure, easy to demold, low processing cost, and the base and the circuit board are easy to assemble.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] The utility model provides an electric energy meter, including:

[0008] A base, on which a clamping plate is provided. One end of the clamping plate is connected to the side wall of the base, and the other end of the clamping plate is provided with a relatively arranged clamping member and a limiting portion along a first direction, and the first direction is parallel to the bottom surface direction of the base;

[0009] A circuit board, which is limited between the clamping member and the limiting portion, so that the circuit board is parallel to the bottom surface of the base.

[0010] As an alternative technical solution of the electric energy meter, the clamping plate includes a first clamping plate and a second clamping plate. The first clamping plate and the second clamping plate are respectively arranged on opposite sides of the base, and one end of the first clamping plate and one end of the second clamping plate are both connected to the side wall of the base. The other end of the first clamping plate is provided with a relatively arranged first clamping member and a first limiting portion, and the other end of the second clamping plate is provided with a relatively arranged second clamping member and a second limiting portion;

[0011] Both ends of the circuit board are limited between the first clamping member and the first limiting portion and between the second clamping member and the second limiting portion.

[0012] As an alternative technical solution for an electricity meter, both the first clamping member and the second clamping member are provided as one, and the first clamping member and the second clamping member are arranged diagonally; the first limiting portion and the second limiting portion are arranged diagonally.

[0013] As an alternative technical solution for an electricity meter, the first clamping member includes a first connecting portion and a first clamping portion. One end of the first connecting portion is connected to the first clamping plate, and the other end is connected to the first clamping portion on one side facing the first limiting portion. The first clamping portion is used for clamping the circuit board; the second clamping member includes a second connecting portion and a second clamping portion. One end of the second connecting portion is connected to the second clamping plate, and the other end is connected to the second clamping portion on one side facing the second limiting portion. The second clamping portion is used for clamping the circuit board.

[0014] As an alternative technical solution for an electricity meter, a first arc surface is provided on the first clamping portion, and a second arc surface is provided on the second clamping portion. Both the first arc surface and the second arc surface are inclined towards the circuit board.

[0015] As an alternative technical solution for an electricity meter, a first insertion slot and a second insertion slot are respectively provided on the first clamping plate and the second clamping plate. The first clamping member is connected to the bottom of the first insertion slot and is arranged close to the slot wall of the first insertion slot. The side wall opposite to the first clamping member in the first insertion slot is the first limiting portion; the second clamping member is connected to the bottom of the second insertion slot and is arranged close to the slot wall of the second insertion slot. The side wall opposite to the second clamping member in the second insertion slot is the second limiting portion;

[0016] Both ends of the circuit board are respectively inserted into the first insertion slot and the second insertion slot;

[0017] In the third direction, one end of the circuit board is limited between the first insertion slot and the first clamping member, and the other end is limited between the second insertion slot and the second clamping member;

[0018] In the first direction, one end of the circuit board is limited between the first limiting portion and the first clamping member, and the other end is limited between the second limiting portion and the second clamping member.

[0019] As an alternative technical solution for an electricity meter, insertion plates are respectively convexly provided at both ends of the circuit board. The two insertion plates are respectively inserted into the first insertion slot and the second insertion slot, and the end faces of both ends of the circuit board respectively abut against the first clamping plate and the second clamping plate.

[0020] As an alternative technical solution of an electricity meter, a first recessed groove is concavely provided at the bottom of the first insertion slot, the first clamping member is connected to the bottom wall of the first recessed groove, and first gaps are provided between opposite sides of the first clamping member and the side walls of the first recessed groove; a second recessed groove is concavely provided at the bottom of the second insertion slot, the second clamping member is connected to the bottom wall of the second recessed groove, and second gaps are provided between opposite sides of the second clamping member and the side walls of the second recessed groove.

[0021] As an alternative technical solution of an electricity meter, the electricity meter further includes a cover, the cover is connected to the base, the cover and the base enclose a containing chamber, and the circuit board is located in the containing chamber.

[0022] As an alternative technical solution of an electricity meter, the electricity meter further includes a fixing member, a first mounting hole is provided on the cover, a second mounting hole is provided on the base, and the fixing member passes through the first mounting hole and is connected to the second mounting hole.

[0023] As an alternative technical solution of an electricity meter, the clamping member is in an "L" shape.

[0024] The beneficial effects of the present utility model at least include:

[0025] The present utility model provides an electricity meter, which includes a base, a circuit board and a cover. Among them, a clamping board is provided on the base, one end of the clamping board is connected to the side wall of the base, and the other end of the clamping board is provided with a relatively arranged clamping member and a limiting portion along a first direction, and the first direction is parallel to the bottom surface direction of the base. The circuit board is limited between the clamping member and the limiting portion, so that the circuit board is parallel to the bottom surface of the base. On the one hand, this enables the circuit board to be fixedly installed on the base under the action of the clamping board, avoiding the phenomenon of relative shaking between the circuit board and the base, and improving the stability and reliability between the two; on the other hand, it can simplify the structure of the base as much as possible. The electricity meter has a simple structure and is easy to process and manufacture, so that the mold structure for processing the base is simple, facilitating the demolding of the base from the mold, and also facilitating the assembly of the circuit board and the clamping board, improving work efficiency and saving manufacturing costs. Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required to be used in the description of the embodiments of the present utility model. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the embodiments of the present utility model and these drawings.

[0027] Figure 1It is a schematic structural diagram of the electric energy meter provided by the embodiment of the present utility model;

[0028] Figure 2 It is a sectional view of the electric energy meter provided by the embodiment of the present utility model;

[0029] Figure 3 It is an exploded view of the electric energy meter provided by the embodiment of the present utility model;

[0030] Figure 4 It is a schematic structural diagram of the assembly structure of the base and the circuit board provided by the embodiment of the present utility model;

[0031] Figure 5 It is a schematic structural diagram of the base provided by the embodiment of the present utility model;

[0032] Figure 6 For Figure 5 The partial enlarged view of the A position in

[0033] Figure 7 For Figure 5 The partial enlarged view of the B position in

[0034] Reference numerals

[0035] 100, base; 110, first clamping plate; 120, first clamping member; 1201, first connecting portion; 1202, first clamping portion; 1203, first arc surface; 130, second clamping plate; 140, second clamping member; 1401, second connecting portion; 1402, second clamping portion; 1403, second arc surface; 150, first limiting portion; 1501, first limiting surface; 160, second limiting portion; 1601, fourth limiting surface; 170, first gap; 180, second gap; 200, circuit board; 300, cover; 310, first mounting hole; 400, fixing member. Detailed implementation manners

[0036] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model to be protected, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0038] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is customarily placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0040] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set" and "connected" 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. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0042] The embodiments of the present utility model are described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0043] This embodiment provides an electric energy meter, which has a simple structure, is easy to demold, has a low processing cost, and the base and the circuit board are easy to assemble.

[0044] As shown Figures 1-5 in the figure, the electric energy meter mainly includes a base 100 and a circuit board 200. Among them, a clamping board is arranged on the base 100. One end of the clamping board is connected to the side wall of the base 100, and the other end of the clamping board is provided with a relatively arranged clamping member and a limiting portion along a first direction, and the first direction is parallel to the bottom surface direction of the base 100. The circuit board 200 is limited between the clamping member and the limiting portion, so that the circuit board 200 is parallel to the bottom surface of the base 100. On the one hand, this enables the circuit board 200 to be fixedly installed with the base 100 under the action of the clamping board, avoiding the relative shaking between the circuit board 200 and the base 100, and improving the stability and reliability between the two; on the other hand, it can simplify the structure of the base 100 as much as possible. The structure of the electric energy meter is simple and easy to process and manufacture, so that the mold structure for processing the base 100 is simple, facilitating the demolding of the base 100 from the mold, and also facilitating the assembly of the circuit board 200 and the clamping board, improving work efficiency and saving manufacturing costs.

[0045] It should be noted that the first direction in this embodiment is Figure 4 the first direction in, and through the arrangement of the clamping member and the limiting portion on the clamping board, the circuit board 200 can be limited in the first direction, avoiding the relative shaking between the circuit board 200 and the base 100, ensuring that the circuit board 200 is parallel to the bottom surface of the base 100, and improving the reliability of the electric energy meter.

[0046] As shown Figure 1 in the figure, further, the clamping board includes a first clamping board 110 and a second clamping board 130, and the first clamping board 110 and the second clamping board 130 are respectively arranged on opposite sides of the base 100. One end of the first clamping board 110 and one end of the second clamping board 130 are both connected to the side wall of the base 100. The other end of the first clamping board 110 is provided with a relatively arranged first clamping member 120 and a first limiting portion 150, and the other end of the second clamping board 130 is provided with a relatively arranged second clamping member 140 and a second limiting portion 160. Both ends of the circuit board 200 are limited between the first clamping member 120 and the first limiting portion 150 and between the second clamping member 140 and the second limiting portion 160.

[0047] Based on the above design, in this embodiment, by providing a first clamping plate 110, a second clamping plate 130, a first limiting portion 150, and a second limiting portion 160 on one side of the base 100, on the one hand, the purpose of fixedly installing the circuit board 200 can be achieved, avoiding the relative shaking between the circuit board 200 and the base, and improving the stability and reliability between the two; on the other hand, the structure of the base 100 can be simplified as much as possible. The structure of this electricity meter is simple and easy to process and manufacture, so that the mold structure for processing the base 100 is simple, facilitating the demolding of the base 100 from the mold, improving work efficiency, and saving manufacturing costs. The circuit board 200 can be simultaneously clamped and connected to the first clamping member 120 and the second clamping member 140, and is limited between the first clamping member 120 and the first limiting portion 150, and between the second clamping member 140 and the second limiting portion 160, thereby realizing the assembly of the base 100 and the circuit board 200, with convenient operation and easy assembly.

[0048] As Figure 1 shown, in this embodiment, the first clamping member 120 and the second clamping member 140 are arranged diagonally, which can improve the stability and reliability of the circuit board 200 on the premise of simplifying the structure of the base 100, and avoid the phenomenon of the circuit board 200 shaking unstably during actual use.

[0049] Furthermore, in this embodiment, both the first clamping member 120 and the second clamping member 140 are provided as one. Compared with the traditional solution of providing a buckle at each of the four corners, in this embodiment, the first clamping member 120 and the second clamping member 140 are respectively provided as one and arranged diagonally. On the one hand, this can simplify the structure of the base 100, facilitate the demolding of the base 100, and improve work efficiency; on the other hand, it is beneficial to the assembly of the circuit board 200 and the base 100, and the assembly process is simpler and easier to assemble.

[0050] As Figure 1 shown, in this embodiment, the first clamping member 120 includes a first connecting portion 1201 and a first clamping portion 1202. One end of the first connecting portion 1201 is connected to the first clamping plate 110, and the other end is connected to the first clamping portion 1202 on the side facing the first limiting portion 150. The first clamping portion 1202 is used for clamping the circuit board 200; the second clamping member 140 includes a second connecting portion 1401 and a second clamping portion 1402. One end of the second connecting portion 1401 is connected to the second clamping plate 130, and the other end is connected to the second clamping portion 1402 on the side facing the second limiting portion 160. The second clamping portion 1402 is used for clamping the circuit board 200.

[0051] The provision of the first clamping portion 1202 and the second clamping portion 1402 can play a role in fixing and limiting the circuit board 200 in the third direction, avoiding the phenomenon that the circuit board 200 shakes in the third direction and improving the stability.

[0052] Furthermore, a first recessed groove is provided at the bottom of the first insertion slot. The first clamping member 120 is connected to the bottom wall of the first recessed groove. A first gap 170 is provided between the opposite sides of the first clamping member 120 and the side walls of the first recessed groove; a second recessed groove is provided at the bottom of the second insertion slot. The second clamping member 140 is connected to the bottom wall of the second recessed groove. A second gap 180 is provided between the opposite sides of the second clamping member 140 and the side walls of the second recessed groove. That is to say, a first gap 170 is provided between the opposite sides of the first clamping member 120 (i.e., the first connecting portion 1201) and the first clamping plate 110, and a second gap 180 is provided between the opposite sides of the second clamping member 140 (i.e., the second connecting portion 1401) and the second clamping plate 130; the first gap 170 is configured to enable the first clamping member 120 to deform in the first direction, and the second gap 180 is configured to enable the second clamping member 140 to deform in the first direction. In this way, when assembling the circuit board 200, the first clamping member 120 and the second clamping member 140 can undergo elastic deformation (tiny deformation), thereby facilitating the assembly of the circuit board 200.

[0053] Even further, a first arc surface 1203 is provided on the first clamping portion 1202 in this embodiment, and a second arc surface 1403 is provided on the second clamping portion 1402. Both the first arc surface 1203 and the second arc surface 1403 are inclined towards the circuit board 200. The provision of the first arc surface 1203 and the second arc surface 1403 can play a certain guiding role in the assembly of the circuit board 200, thereby improving the convenience and working efficiency of the assembly of the circuit board 200.

[0054] Optionally, the clamping member in this embodiment is in an "L" shape. Specifically, the first connecting portion 1201 and the first clamping portion 1202 in this embodiment are perpendicular to each other, and the second connecting portion 1401 and the second clamping portion 1402 are perpendicular to each other. That is to say, both the first clamping member 120 and the second clamping member 140 are in an "L" shape, which facilitates the demolding of the mold, simplifies both the base 100 and the mold structure, and reduces the demolding difficulty of the base 100.

[0055] Such as Figure 1As shown, in this embodiment, a first limiting portion 150 is further provided on the first clamping plate 110, and a second limiting portion 160 is further provided on the second clamping plate 130. The first limiting portion 150 has a first limiting surface 1501 and a second limiting surface (not shown in the figure) that are perpendicular to each other. The second limiting portion 160 has a third limiting surface (not shown in the figure) and a fourth limiting surface 1601 that are perpendicular to each other. The first limiting surface 1501 and the third limiting surface are both configured to limit the circuit board 200 in the first direction, and the second limiting surface and the fourth limiting surface 1601 are both configured to limit the circuit board 200 in the second direction. Through the settings of the first limiting surface 1501, the second limiting surface, the third limiting surface, and the fourth limiting surface 1601, the circuit board 200 can be limited in the first direction (left-right direction) and the second direction (front-back direction). Through the settings of the first clamping portion 1202 and the second clamping portion 1402, the circuit board 200 can be limited in the third direction (height direction), thereby improving the stability and reliability of the circuit board 200 and avoiding unstable phenomena such as shaking and displacement of the circuit board 200 during use.

[0056] It should be noted that the first direction in this embodiment is Figure 4 the X-axis direction in Figure 4 and the second direction is Figure 4 the Y-axis direction in

[0057] Optionally, the first limiting portion 150 and the second limiting portion 160 in this embodiment are arranged diagonally, thereby improving the uniformity of the force on the circuit board 200, avoiding the phenomenon of stress concentration, and at the same time, further improving the stability and reliability of the circuit board 200 and avoiding unstable phenomena such as shaking and displacement of the circuit board 200 during use.

[0058] Specifically, a first insertion slot and a second insertion slot are respectively provided on the first clamping plate 110 and the second clamping plate 130. The first clamping member 120 is connected to the bottom of the first insertion slot and is disposed close to the slot wall of the first insertion slot. The side wall opposite to the first clamping member 120 in the first insertion slot is the first limiting portion 150. The second clamping member 140 is connected to the bottom of the second insertion slot and is disposed close to the slot wall of the second insertion slot. The side wall opposite to the second clamping member 140 in the second insertion slot is the second limiting portion 160. The circuit board 200 is inserted into the first insertion slot and the second insertion slot.

[0059] In the third direction, one end of the circuit board 200 is limited between the first insertion slot and the first clamping member 120, and the other end is limited between the second insertion slot and the second clamping member 140. In the first direction, one end of the circuit board 200 is limited between the first limiting portion 150 and the first clamping member 120, and the other end is limited between the second limiting portion 160 and the second clamping member 140. Thereby, the stability and reliability of the circuit board 200 are improved, and unstable phenomena such as shaking and displacement of the circuit board 200 during use are avoided.

[0060] Insertion boards are respectively protruded from both ends of the circuit board 200, and the two insertion boards are respectively inserted into the first insertion slot and the second insertion slot. The end faces of both ends of the circuit board 200 are respectively abutted against the first clamping board 110 and the second clamping board 130, thereby realizing the limiting effect on the circuit board 200 in the second direction.

[0061] As Figure 1 shown, in this embodiment, the electricity meter further includes a fixing member 400. A first mounting hole 310 is provided on the cover 300, and a second mounting hole is provided on the base 100. The fixing member 400 passes through the first mounting hole 310 and the second mounting hole in sequence, thereby realizing the connection between the cover 300 and the base 100, enabling the cover 300 and the base 100 to enclose a receiving chamber, and the circuit board 200 is located in the receiving chamber, realizing the protection effect on the circuit board 200, avoiding the circuit board 200 being contaminated or damaged by foreign objects from the outside, and improving its safety performance.

[0062] Optionally, multiple fixing members 400 in this embodiment can be provided, and the multiple fixing members 400 are arranged at equal intervals, thereby improving the connection stability between the cover 300 and the base 100, and avoiding the phenomenon of stress concentration at the connection between the cover 300 and the base 100.

[0063] Optionally, the fixing member 400 in this embodiment can be set as a conventional screw.

[0064] Optionally, the circuit board 200 in this embodiment can be a conventional PCB circuit board.

[0065] This embodiment also provides an electric energy acquisition system, which includes at least one of the above-mentioned electricity meters. In addition, the electric energy acquisition system further includes a control device, and the control device is communicatively connected to the electricity meter. Exemplarily, the control device can be set as a host computer, a server, etc. The electricity meter reading of the electricity meter is obtained through the communication connection between the control device and the electricity meter.

[0066] Since the electric energy acquisition system has the above-mentioned electricity meter, therefore, the electric energy acquisition system has a simple structure, is convenient for assembly, can improve work efficiency, and reduce costs.

[0067] Obviously, the above are only the preferred embodiments of the present utility model and the technical principles applied. Those skilled in the art will understand that the present utility model is not limited to the specific embodiments here, and various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present utility model. Therefore, although the present utility model has been described in more detail through the above embodiments, the present utility model is not limited to the above embodiments only. Without departing from the concept of the present utility model, more other equivalent embodiments can be included, and the scope of the present utility model is determined by the scope of the appended claims.

[0068] Note that in the description of this specification, the descriptions referring to the terms "some embodiments", "other embodiments", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

Claims

1. Electric energy meter, characterized in that, Comprising: A base (100), on which a clamping plate is provided. One end of the clamping plate is connected to the side wall of the base (100), and the other end of the clamping plate is provided with a relatively arranged clamping member and a limiting portion along a first direction, and the first direction is parallel to the bottom surface direction of the base (100); A circuit board (200), which is limited between the clamping member and the limiting portion, so that the circuit board (200) is parallel to the bottom surface of the base (100).

2. The electric energy meter according to claim 1, characterized in that, The clamping plate includes a first clamping plate (110) and a second clamping plate (130). The first clamping plate (110) and the second clamping plate (130) are respectively arranged on opposite sides of the base (100), and one end of the first clamping plate (110) and one end of the second clamping plate (130) are both connected to the side wall of the base (100). The other end of the first clamping plate (110) is provided with a relatively arranged first clamping member (120) and a first limiting portion (150), and the other end of the second clamping plate (130) is provided with a relatively arranged second clamping member (140) and a second limiting portion (160); Both ends of the circuit board (200) are respectively limited between the first clamping member (120) and the first limiting portion (150) and between the second clamping member (140) and the second limiting portion (160).

3. The electricity meter according to claim 2, characterized in that, Both the first clamping member (120) and the second clamping member (140) are provided as one, and the first clamping member (120) and the second clamping member (140) are diagonally arranged; the first limiting portion (150) and the second limiting portion (160) are diagonally arranged.

4. The electricity meter according to claim 3, characterized in that, The first clamping member (120) includes a first connecting portion (1201) and a first clamping portion (1202). One end of the first connecting portion (1201) is connected to the first clamping plate (110), and the other end is connected to the first clamping portion (1202) on the side facing the first limiting portion (150). The first clamping portion (1202) is used for clamping the circuit board (200); the second clamping member (140) includes a second connecting portion (1401) and a second clamping portion (1402). One end of the second connecting portion (1401) is connected to the second clamping plate (130), and the other end is connected to the second clamping portion (1402) on the side facing the second limiting portion (160). The second clamping portion (1402) is used for clamping the circuit board (200).

5. The electric energy meter according to claim 4, characterized in that, A first arc surface (1203) is provided on the first clamping portion (1202), and a second arc surface (1403) is provided on the second clamping portion (1402). Both the first arc surface (1203) and the second arc surface (1403) are inclined towards the circuit board (200).

6. The electricity meter according to claim 2, characterized in that, The first clamping plate (110) and the second clamping plate (130) are respectively provided with a first insertion slot and a second insertion slot. The first clamping member (120) is connected to the bottom of the first insertion slot and is disposed close to the slot wall of the first insertion slot. The side wall opposite to the first clamping member (120) in the first insertion slot is the first limiting portion (150); the second clamping member (140) is connected to the bottom of the second insertion slot and is disposed close to the slot wall of the second insertion slot. The side wall opposite to the second clamping member (140) in the second insertion slot is the second limiting portion (160); Both ends of the circuit board (200) are respectively inserted into the first insertion slot and the second insertion slot; In the third direction, one end of the circuit board (200) is limited between the first insertion slot and the first clamping member (120), and the other end is limited between the second insertion slot and the second clamping member (140); In the first direction, one end of the circuit board (200) is limited between the first limiting portion (150) and the first clamping member (120), and the other end is limited between the second limiting portion (160) and the second clamping member (140).

7. The electric energy meter according to claim 6, wherein, Both ends of the circuit board (200) are respectively convexly provided with insertion plates, and the two insertion plates are respectively inserted into the first insertion slot and the second insertion slot. The end faces of both ends of the circuit board (200) respectively abut against the first clamping plate (110) and the second clamping plate (130).

8. The electric energy meter according to claim 6, characterized in that The bottom of the first insertion slot is recessed with a first recessed groove. The first clamping member (120) is connected to the bottom wall of the first recessed groove. First gaps (170) are respectively provided between the opposite sides of the first clamping member (120) and the side walls of the first recessed groove; the bottom of the second insertion slot is recessed with a second recessed groove. The second clamping member (140) is connected to the bottom wall of the second recessed groove. Second gaps (180) are respectively provided between the opposite sides of the second clamping member (140) and the side walls of the second recessed groove.

9. The electric energy meter according to any one of claims 1-8, characterized in that The electricity meter further includes a cover (300). The cover (300) is connected to the base (100). The cover (300) and the base (100) enclose a containing chamber, and the circuit board (200) is located in the containing chamber.

10. The electricity meter according to claim 9, characterized in that, The electricity meter further includes a fixing member (400). The cover (300) is provided with a first mounting hole (310), and the base (100) is provided with a second mounting hole. The fixing member (400) passes through the first mounting hole (310) and is connected to the second mounting hole.

11. The electricity meter according to any one of claims 1-8, characterized in that, The clamping member is in an "L" shape.

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