Electric energy meter

Abstract

The utility model provides an electric energy meter, and relates to the technical field of electrical instruments. The utility model provides an electric energy meter which comprises a base, a meter cover and an external line bank. A wiring board is installed in the base and provided with a wiring terminal, and a preset gap is formed between the inner wall of the base and the wiring board. And the meter cover is buckled with the base and is provided with terminal holes, and the terminal holes are opposite to the wiring terminals. The external line bank is connected with the wiring terminals in an inserted mode through the terminal holes and used for being connected with an external circuit. And at least part of the hole wall, close to the base, of the terminal hole is opposite to part of the wiring board. Thus, under the condition that the external line bank is not connected with the wiring board in an inserted mode, the meter cover can shield the preset gap through the hole wall of the terminal hole, the possibility that sundries enter the base through the preset gap easily due to exposure of the preset gap can be reduced, and the working stability of the electric energy meter is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical instruments, and particularly relates to an electric energy meter. BACKGROUND

[0002] The electric energy meter is a commonly used instrument device for measuring electric quantity and is widely applied to various fields such as families and industries. In order to improve the flexibility and safety of wiring, the electric energy meter comprises a wiring board and an external wiring row. The wiring board is arranged in the interior of the electric energy meter, the external wiring row is detachably electrically connected with the wiring board, and the wiring position of the external wiring row is exposed so as to realize the electrical connection between the external wiring row and the external circuit.

[0003] However, the arrangement of the electric energy meter in the related art is not reasonable, so that when the external wiring row is detached and not plugged into the wiring board, foreign matters are likely to enter the interior of the electric energy meter, thereby affecting the use of the electric energy meter. CONTENT OF THE UTILITY MODEL

[0004] The present application provides an electric energy meter, which can reduce the possibility of foreign matters entering the interior of the electric energy meter when the external wiring row is not plugged in, thereby reducing the influence of foreign matters on the use of the electric energy meter.

[0005] The present application provides an electric energy meter, which comprises a base, a cover and an external wiring row. The base is internally provided with a wiring board, the wiring board is provided with a wiring terminal, and a preset gap is formed between the inner wall of the base and the wiring terminal. The cover is buckled with the base, the cover is provided with a terminal hole, and the terminal hole is opposite to the wiring terminal. The external wiring row is plugged into the terminal hole and the wiring terminal through the terminal hole, and the external wiring row is used for connecting the external circuit.

[0006] At least part of the hole wall of the terminal hole close to the base is opposite to the preset gap.

[0007] In this way, when the external wiring row is not plugged into the wiring board, the cover can shield the preset gap through the hole wall of the terminal hole, the exposure of the preset gap can be reduced, the possibility of foreign matters entering the interior of the base through the preset gap can be reduced, and the influence of foreign matters on the work of the wiring board can be reduced, thereby improving the stability of the work of the electric energy meter.

[0008] Optionally, the wiring board is provided with a first surface facing the cover, and the wiring terminal is arranged on the first surface. In the plugging direction of the external wiring row and the wiring terminal, the hole wall of the terminal hole close to the base is flush with the first surface, or the hole wall of the terminal hole close to the base is located on the side of the first surface away from the cover.

[0009] In the embodiments of the present application, the terminal hole can shield the preset gap through different arrangement modes, thereby improving the flexibility of the arrangement of the terminal hole.

[0010] Optionally, the cover includes a body and a connecting wall connected to a side of the cover facing the base, and the terminal hole is arranged on the connecting wall. The part of the connecting wall on the side of the terminal hole facing the base abuts against the terminal plate.

[0011] In this way, the shielding effect of the cover on the preset gap can be improved, and the possibility that foreign matter enters the electric energy meter through the gap between the connecting wall and the terminal plate due to the fact that part of the preset gap is not shielded can be reduced.

[0012] Optionally, the body and the connecting wall are integrally formed.

[0013] Through the above arrangement, the body and the connecting wall can be obtained in one production. In this way, the manufacturing process of the cover is simplified, the number of parts of the cover is reduced, and the electric energy meter is facilitated to be assembled. In addition, the connection between the body and the connecting wall can be more compact, and the overall strength and stability of the cover can be improved.

[0014] Optionally, the external wiring harness includes a connecting portion and a plug-in portion connected to each other, the plug-in portion is plugged with the terminal, and the connecting portion is used to connect the external circuit. The terminal hole includes a first hole and a second hole, the first hole is located on the side away from the terminal, and the second hole is arranged on the hole bottom of the first hole. The hole wall of the first hole close to the base is opposite to the preset gap. In the case that the external wiring harness is plugged with the terminal, the connecting portion is located in the first hole, and the plug-in portion is located in the second hole.

[0015] In this way, different parts of the external wiring harness can be located in the first hole and the second hole, respectively, to realize the cooperation between the external wiring harness and the cover.

[0016] Optionally, the side of the cover away from the base is further provided with a fixing hole in communication with the first hole. The connecting portion is provided with a wiring hole on the side away from the terminal, and the connecting portion is provided with a fastener on the side away from the base, and the fastener is exposed through the fixing hole. When the external wiring harness is connected with the external circuit, the external circuit extends into the wiring hole, and the fastener can fix the external circuit.

[0017] In this way, in the case that the external wiring harness is located in the terminal hole and the external circuit is in the wiring hole, the fastener can be operated through the first hole to fix the external circuit. Based on this, the fastener can firmly clamp the external circuit on the connecting portion, so that the electrical connection between the external wiring harness and the external circuit is relatively stable.

[0018] Optionally, the cover includes opposite first and second side walls. The terminal hole is arranged on the first side wall and penetrates the first side wall in the direction from the first side wall to the second side wall. The second side wall is provided with a rib plate on the surface facing the first side wall.

[0019] In this way, the electric energy meter is provided with an external wire row connected with external circuit, and the external wire row is installed through the terminal hole in the first side wall. The rib plate on the second side wall can prevent the mistake.

[0020] Optionally, the cover includes opposite first and second side walls, and the first and second side walls are provided with terminal holes. The wiring board is provided with two wiring terminals, and the two wiring terminals are arranged at intervals along the distribution direction of the first and second side walls. One wiring terminal is opposite to the terminal hole on the first side wall, and the other wiring terminal is opposite to the terminal hole on the second side wall. The two wiring terminals are inserted with the external wire row.

[0021] In this way, the external wire row can be inserted through the terminal hole on the first side wall and the second side wall. In this way, the cover can shield the inner wall of the wiring board and the base at the two terminal holes, thereby improving the blocking effect of sundries.

[0022] Optionally, the base is provided with a first connecting column, and the first connecting column is provided with a first mounting hole. The cover is provided with a second connecting column, and the second connecting column is provided with a second mounting hole. The electric energy meter includes a fixing member, and the fixing member is arranged in the first mounting hole and the second mounting hole.

[0023] In this way, the fixing member can be arranged in the first mounting hole and the second mounting hole, so that the fixing member can connect the first connecting column and the second connecting column, thereby realizing the connection of the base and the cover.

[0024] Optionally, the electric energy meter further includes a tail cover connected to the cover. The projection of the tail cover shields the fixing member in the direction from the cover to the base. The tail cover is provided with a lead seal.

[0025] Through the above arrangement, the tail cover can shield the position of the fixing member. In this way, the tail cover will interfere with the rotation of the fixing member when the tail cover is provided with the lead seal and the lead seal is not damaged, so that the user cannot insert the wrench, screwdriver and other tools above the fixing member, thereby reducing the possibility of manually removing the fixing member. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a schematic view of an electric energy meter according to an embodiment of the present application.

[0027] Figure 2 It is a schematic view of a base according to an embodiment of the present application.

[0028] Figure 3 It is a schematic view of a cover according to an embodiment of the present application.

[0029] Figure 4 It is a schematic view of an electric energy meter after removing the external wire row according to an embodiment of the present application.

[0030] Figure 5 A sectional view of an electric energy meter according to an embodiment of the present application.

[0031] Figure 6 A schematic view of an external wiring row according to an embodiment of the present application.

[0032] Figure 7 A schematic view of a meter cover of a single-circuit electric energy meter according to an embodiment of the present application.

[0033] Figure 8 A schematic view of a meter cover of a double-circuit electric energy meter according to an embodiment of the present application.

[0034] Figure 9 An exploded view of an electric energy meter according to an embodiment of the present application.

[0035] BRIEF DESCRIPTION OF DRAWINGS

[0036] 100: electric energy meter; 10: base; 11: wiring board; 12: wiring terminal; 13: preset gap; 111: first surface; 14: first connecting column; 15: first mounting hole; 20: meter cover; 201: terminal hole; 21: body; 22: connecting wall; 202: first hole; 203: second hole; 204: fixing hole; 205: first side wall; 206: second side wall; 207: rib plate; 23: second connecting column; 24: second mounting hole; 30: external wiring row; 31: wiring part; 32: plug-in part; 311: wiring hole; 40: tail cover. DETAILED DESCRIPTION

[0037] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terminology used in the specification of the present application is only for the purpose of describing specific embodiments and is not intended to limit the present application; the terms "comprise" and "have" and any variations thereof in the specification of the present application and the description of the drawings are intended to cover non-exclusive inclusion.

[0039] Reference to "an embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood that embodiments described herein can be combined with each other, unless otherwise indicated.

[0040] The term "and / or" herein is merely used to associate associated objects, and means that three relationships can exist, for example, A and / or B can mean that A exists, A and B exist, and B exists. In addition, the character " / " herein generally means that the front and rear associated objects are an "or" relationship.

[0041] The orientation words appearing in the following description are the directions shown in the drawings, and are not limited to the specific structure of the application. For example, in the description of the application, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0042] In addition, the terms "first", "second", and the like in the specification and claims of the application or the above drawings are used to distinguish different objects, and are not used to describe a particular order, and can explicitly or implicitly include one or more of the features.

[0043] In the description of the application, unless otherwise specified, the meaning of "a plurality of" is two or more (including two), and similarly, "a plurality of groups" means two or more groups (including two groups).

[0044] In the description of the present application, it should be noted that unless specifically defined and limited otherwise, the terms "mounting", "connected", "connection" should be understood in a broad sense, for example, the "connection" or "connection" of the mechanical structure can mean physical connection, for example, the physical connection can be fixed connection, for example, fixed connection by spacer, for example, fixed connection by screw, bolt or other spacer; the physical connection can also be detachable connection, for example, mutual clamping or clamping connection; the physical connection can also be integrally connected, for example, welding, bonding or integrally formed connection. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The "connection" or "connection" of the circuit structure can mean electrical connection or signal connection, for example, it can be directly connected, that is, physically connected, or indirectly connected through at least one intermediate element, as long as the circuit is connected, it can also be the connection between the two elements; signal connection can also mean signal connection through media medium, for example, radio wave. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0046] In order to improve the flexibility and installation of wiring, a wiring board and an external wiring row are usually provided in the electric energy meter. Among them, the wiring board is fixed inside the electric energy meter, and the external wiring row is electrically connected with the wiring board, and the external wiring row is detachable. In this way, the electric energy meter can be connected with the external circuit through the external wiring row, so that the wiring work of the electric energy meter can be carried out outside the electric energy meter, so as to carry out the wiring.

[0047] Since the plug-in of the external wiring row is carried out outside the electric energy meter, the wiring board is generally arranged at a position close to the edge inside the electric energy meter, so that the external wiring row is electrically connected with the wiring board. However, the closer the wiring board is to the edge of the electric energy meter, the more the part of the external wiring row protruding from the outer surface of the electric energy meter.

[0048] Therefore, in the related art, in order to reduce the phenomenon that the external wiring row is easily rubbed, collided and the like with external objects due to the protrusion of the external wiring row, the wiring board is generally provided with a certain gap between the edge of the electric energy meter.

[0049] However, the setting of the gap will affect the operation of the electric energy meter. Specifically, when the external wiring row is detached from the terminal board, the gap will be exposed. In this way, foreign matter and the like in the external environment can easily enter the internal part of the electric energy meter, affecting the normal operation of the terminal board and the like installed in the internal part of the electric energy meter.

[0050] Based on the above problems, an electric energy meter 100 is provided in the embodiments of the present application. The electric energy meter 100 provided by the embodiments of the present application will be described in detail below with reference to the drawings.

[0051] Referring to FIGS. 1 to 3, Figure 1 Figure 2 and Figure 3 , the electric energy meter 100 includes a base 10, a cover 20, and an external wiring row 30. The base 10 internally installs a terminal board 11, the terminal board 11 has a terminal 12, and the inner wall of the base 10 and the terminal board 11 have a preset gap 13. The cover 20 is buckled with the base 10, the cover 20 is provided with a terminal hole 201, and the terminal hole 201 is opposite to the terminal 12. The external wiring row 30 is inserted with the terminal 12 through the terminal hole 201, and the external wiring row 30 is used for connecting an external circuit. At least part of the hole wall of the cover 20 close to the base 10 is opposite to the preset gap 13.

[0052] In the embodiments of the present application, the electric energy meter 100 includes the base 10 and the cover 20, the base 10 and the cover 20 are buckled, and the housing of the electric energy meter 100 can be formed to protect the elements such as the terminal board 11 in the internal part of the electric energy meter 100 and meet the isolation requirement of the electric energy meter 100 and the external environment. The base 10 can also serve as the basis for the setting of the terminal board 11 to provide a setting position and support for the terminal board 11, so that the terminal board 11 can stably work.

[0053] In the present application, the electric energy meter 100 further includes the external wiring row 30, and the electric energy meter 100 can be electrically connected with the external circuit through the external wiring row 30. The terminal board 11 includes the terminal 12, and the external wiring row 30 can be inserted with the terminal 12 to realize the connection between the electric energy meter 100 and the external circuit in the case that the external wiring row 30 connects the external circuit, so that the electric energy meter 100 can normally work.

[0054] The inner wall of the base 10 and the terminal board 11 have the preset gap 13, so that when the external wiring row 30 is inserted, part of the external wiring row 30 can be opposite to the preset gap 13. In this way, the possibility that the part of the external wiring row 30 protruding from the cover 20 after the insertion of the external wiring row 30 is too large to cause the external wiring row 30 to easily collide with other objects in the external environment and cause line failure and other problems can be reduced.

[0055] ​In summary, in the electric energy meter 100 provided in the present application, the terminal block 11 is located inside the base 10 and the cover 20 which are buckled to each other, so that the normal work of the electric energy meter 100 can be ensured. In order to realize the connection between the external wiring row 30 and the terminal block 11 inside the electric energy meter 100, the cover 20 is further provided with a terminal hole 201. Since the terminal hole 201 is opposite to the terminal 12, the external wiring row 30 can be inserted into the electric energy meter 100 through the terminal hole 201 and connected to the terminal 12, so as to realize the electrical connection between the external wiring row 30 and the terminal block 11.

[0056] Since at least part of the hole wall of the terminal hole 201 close to the base 10 is opposite to the preset gap 13, the hole wall of the terminal hole 201 can shield the preset gap 13, as shown in Figure 4 Thus, in the case that the external wiring row 30 is not inserted into the terminal block 11, the cover 20 can shield the preset gap 13 through the hole wall of the terminal hole 201, so as to reduce the exposure of the preset gap 13, and thus the possibility that the sundries can enter the inside of the base 10 through the preset gap 13 can be reduced, thereby reducing the influence of the sundries on the work of the terminal block 11 and improving the stability of the work of the electric energy meter 100.

[0057] In addition, in the present application, the terminal hole 201 is arranged on the cover 20. When arranging the external wiring row 30, the cover 20 is buckled to the base 10 first, so that the terminal hole 201 on the cover 20 is opposite to the terminal 12, and then the external wiring row 30 is operated to be inserted into the terminal 12 through the terminal hole 201.

[0058] Thus, the external wiring row 30 can cooperate with the terminal hole 201 on the cover 20 and also cooperate with the terminal block 11 on the base 10. In this way, after the external wiring row 30 is inserted, the cover 20 cannot be directly opened, and only after the external wiring row 30 is disassembled can the cover 20 be opened. Based on this, it can be ensured that when the cover 20 is opened in necessary cases, the circuit is in a safe disconnected state, so as to avoid the occurrence of electrical accidents.

[0059] In some embodiments, as shown in Figure 1 and Figure 2 The terminal block 11 has a first surface 111 facing the cover 20, and the terminal 12 can be arranged on the first surface 111. That is, the terminal 12 is located on the side of the base 10 facing the cover 20, so that the terminal 12 can be located between the base 10 and the cover 20, thereby facilitating the arrangement of the terminal 12.

[0060] Based on the arrangement that the terminal 12 is connected to the first surface 111, the terminal hole 201 can have different arrangement modes to shield the preset gap 13, which will be described below.

[0061] In one mode, as shown inFigure 2 , Figure 4 and Figure 5 As shown, in the insertion direction of the external terminal block 30 and the terminal block 12, the wall of the terminal hole 201 near the base 10 is flush with the first surface 111. In this way, the inner wall of the terminal hole 201 near the base 10 and the terminal block 11 can be arranged opposite to each other, and the cover 20 can effectively block the preset gap 13, reducing the entry of foreign objects into the energy meter 100 through the preset gap 13.

[0062] Furthermore, through the above-mentioned arrangement, the hole wall of the terminal hole 201 near the base 10 can also provide support for the external terminal block 30, making the installation of the external terminal block 30 in the energy meter 100 and the insertion between it and the terminal block 12 more stable, thereby improving the reliability of the operation of the energy meter 100.

[0063] In another configuration, the terminal hole 201 is located near the hole wall of the base 10 on the side of the first surface 111 facing away from the cover 20.

[0064] With the above arrangement, the wall of the terminal hole 201 near the base 10 is lower than the first surface 111. Thus, the wall of the terminal hole 201 near the base 10 is misaligned with the first surface 111, and the wall of the terminal hole 201 near the base 10 can also block the preset gap 13. In addition, there is ample space for the external wiring harness 30 to be inserted, facilitating its insertion.

[0065] In summary, the wall of the terminal hole 201 near the base 10 can be lower than or flush with the first surface 111. This reduces the possibility that the wall of the terminal hole 201 near the base 10 might obstruct the wiring terminal 12 when the terminal hole 201 is positioned high, thus affecting the connection between the external terminal block 30 and the wiring terminal 12.

[0066] The terms "low" or "high" refer to the fact that the electricity meter 100 is placed on a horizontal surface with the base 10 as a reference. The side closer to the horizontal surface is considered "low," and the side farther from the horizontal surface is considered "high."

[0067] In some embodiments, such as Figure 1 , Figure 3 and Figure 5 As shown, the watch cover 20 may include a body 21 and a connecting wall 22. The connecting wall 22 is connected to the side of the watch cover 20 facing the base 10, and a terminal hole 201 is provided on the connecting wall 22. The portion of the connecting wall 22 located on the side of the terminal hole 201 facing the base 10 abuts against the terminal block 11.

[0068] Through the above arrangement, the connecting wall 22 is connected to the body 21 and located on the side of the cover 20 facing the base 10. The terminal hole 201 can be arranged on the connecting wall 22, so that the terminal hole 201 can be opposite to the wiring terminal 12 on the base 10, so as to realize the electrical connection between the external wiring row 30 and the wiring board 11.

[0069] In the embodiment of the present application, the part of the connecting wall 22 on the side of the terminal hole 201 facing the base 10 abuts against the wiring board 11, that is, the connecting wall 22 extends to the side of the wiring board 11. Since the preset gap 13 is located between the inner wall of the base 10 and the wiring board 11, the connecting wall 22 can completely shield the preset gap 13 between the wiring board 11 and the inner wall of the base 10. In this way, the shielding effect of the cover 20 on the preset gap 13 can be improved, and the possibility that foreign matter enters the electric energy meter 100 through the gap between the connecting wall 22 and the wiring board 11 due to the fact that part of the preset gap 13 is not shielded can be reduced.

[0070] In addition, the surface of the connecting wall 22 facing the base 10 can also abut against the base 10, so that the cover 20 and the base 10 are in good contact, and the possibility that there is a gap between the base 10 and the cover 20 in the fastening direction is reduced.

[0071] In some embodiments, the body 21 and the connecting wall 22 can be an integrally formed structure.

[0072] Through the above arrangement, the body 21 and the connecting wall 22 can be obtained at one time. In this way, the manufacturing process of the cover 20 is simplified, the number of parts of the cover 20 is reduced, and the assembly of the electric energy meter 100 is facilitated. In addition, the connection between the body 21 and the connecting wall 22 is more compact, and the overall strength and stability of the cover 20 are improved.

[0073] In some embodiments, as shown in Figures 4 to 6 , the external wiring row 30 can include a wiring part 31 and a plug-in part 32 connected to each other, the plug-in part 32 is plugged with the wiring terminal 12, and the wiring part 31 is used to connect external circuits.

[0074] As shown in Figure 1 , Figure 2 and Figure 7 , the terminal hole 201 can include a first hole 202 and a second hole 203, the first hole 202 is located on the side away from the wiring terminal 12, the second hole 203 is arranged at the hole bottom of the first hole 202, and the hole wall of the first hole 202 close to the base 10 is opposite to the preset gap 13. In the case that the external wiring row 30 is plugged with the wiring terminal 12, the wiring part 31 is located in the first hole 202, and the plug-in part 32 is located in the second hole 203.

[0075] In the embodiment of the present application, the terminal hole 201 specifically includes a first hole 202 and a second hole 203. Since the second hole 203 is arranged at the hole bottom of the first hole 202, the first hole 202 and the second hole 203 can communicate with each other. In this way, different parts of the external wire row 30 can be located in the first hole 202 and the second hole 203 respectively to realize the cooperation between the external wire row 30 and the cover 20.

[0076] Since the first hole 202 is located away from the terminal 12, the second hole 203 arranged at the hole bottom of the first hole 202 is arranged close to the terminal 12. Thus, when the external wire row 30 cooperates with the terminal hole 201, specifically, the terminal part 31 is located in the first hole 202 and the plug-in part 32 is located in the second hole 203.

[0077] It should be noted that the size of the terminal part 31 is generally large, which can facilitate the wiring of the external wire row 30. Moreover, when the external wire row 30 is operated, the external wire row 30 can also be held by the terminal part 31 to provide an operable position for the worker.

[0078] In some embodiments, as shown in Figure 2 , Figure 3 , Figure 6 and Figure 7 , the side of the cover 20 away from the base 10 can also be provided with a fixing hole 204, the fixing hole 204 communicates with the first hole 202, the terminal part 31 is provided with a terminal hole 311 away from the side of the terminal 12, and the terminal part 31 is provided with a fastener away from the base 10, the fastener is exposed through the fixing hole 204. When the external wire row 30 is connected with the external circuit, the external circuit is inserted into the terminal hole 311, and the fastener can fix the external circuit. Specifically, the fastener can be a threaded part such as a screw or a bolt, and the specific type of the fixing part is not limited in the embodiment of the present application.

[0079] In the present application, the terminal part 31 is also provided with a terminal hole 311. When the external wire row 30 is connected with the external circuit, specifically, the external circuit can be inserted into the terminal hole 311 to realize the electrical connection between the external circuit and the external wire row 30.

[0080] In the embodiment of the present application, the cover 20 is also provided with a fixing hole 204, since the fixing hole 204 communicates with the first hole 202, after the external wire row 30 is plugged in, the terminal part 31 located in the first hole 202 of the external wire row 30 has a part opposite to the fixing hole 204.

[0081] The wiring portion 31 is further provided with a fastener. When the external circuit is in the wiring hole 311, the fastener can be operated to firmly clamp the external circuit on the wiring portion 31, so that the electrical connection between the external wiring row 30 and the external circuit is stable.

[0082] Since the fastener is located on the side away from the wiring board 11, the fastener can be exposed outside the cover 20 through the first hole 202. In this way, when the external wiring row 30 is located in the terminal hole 201 and the external circuit is in the wiring hole 311, the fastener can be operated through the first hole 202 to fix the external circuit. Alternatively, when the external wiring row 30 is located in the terminal hole 201 and the external circuit is connected to the external wiring row 30, the fastener can be operated through the first hole 202 to loosen the fastener so as to remove the external circuit from the electric energy meter 100.

[0083] That is, in the embodiment of the present application, the external wiring row 30 can be inserted into the wiring board 11 first, and then connected, so that the cover 20 has little effect on the connection of the external wiring row 30.

[0084] In addition, for the electric energy meter 100 provided in the embodiment of the present application, in addition to the connection mode of first inserting the external wiring row 30 and then connecting the external wiring row 30, it can also be connected by other modes. For example, the external wiring row 30 can be connected outside the electric energy meter 100 first, and then inserted into the wiring board 11 through the terminal hole 201 after the connection is completed.

[0085] At present, according to different metering requirements, the electric energy meter 100 also has different types. For example, a single-loop electric energy meter that can measure the power consumption of a single loop, and a double-loop electric energy meter that can measure the power consumption of two loops. For the single-loop electric energy meter and the double-loop electric energy meter, the terminal hole 201 can be provided on the cover 20 of the electric energy meter 100 to reduce the possibility of foreign matter entering the electric energy meter 100. Here, the double-loop electric energy meter and the single-loop electric energy meter are described as follows.

[0086] For the double-loop electric energy meter, the cover 20 includes opposite first and second side walls 205 and 206, and the first and second side walls 205 and 206 are both provided with the terminal hole 201, as shown in Figure 8 .

[0087] Continuing to refer to Figure 1 , Figure 2 and Figure 8The terminal block 11 is provided with two terminal posts 12, which are arranged at intervals along the distribution direction of the first side wall 205 and the second side wall 206. One terminal post 12 is opposite the terminal hole 201 on the first side wall 205, and the other terminal post 12 is opposite the terminal hole 201 on the second side wall 206. Both terminal posts 12 are inserted with the external wire row 30.

[0088] In the embodiment of the present application, the first side wall 205 and the second side wall 206 are both provided with the terminal hole 201, and the two terminal holes 201 can respectively provide the external wire row 30 with an insertion position at the first side wall 205 and the second side wall 206.

[0089] The terminal block 11 is provided with two terminal posts 12, which are respectively opposite the terminal hole 201 on the first side wall 205 and the terminal hole 201 on the second side wall 206. In this way, the external wire row 30 can be inserted through the terminal hole 201 on the first side wall 205 and the second side wall 206. In this way, the cover 20 can shield the inner wall of the terminal block 11 and the base 10 at the two terminal holes 201, thereby improving the blocking effect of foreign matter entering the electric energy meter 100.

[0090] For a single-loop electric energy meter, the cover 20 includes opposite first and second side walls 205 and 206. The terminal hole 201 is arranged on the first side wall 205 and penetrates the first side wall 205 along the direction from the first side wall 205 to the second side wall 206. The surface of the second side wall 206 facing the first side wall 205 is provided with a rib plate 207, as shown in Figure 7 .

[0091] In the embodiment of the present application, the terminal hole 201 is arranged on the first side wall 205. Since the terminal hole 201 penetrates the first side wall 205 along the direction from the first side wall 205 to the second side wall 206, the terminal hole 201 can be in communication with the inside of the electric energy meter 100. In this way, the external wire row 30 can be inserted into the electric energy meter 100 through the terminal hole 201 and inserted with the terminal post 12.

[0092] In addition, in order to reduce the possibility of mixing the cover 20 of the double-loop electric energy meter with the cover 20 of the single-loop electric energy meter, in the present application, for a single-loop electric energy meter, the surface of the second side wall 206 facing the first side wall 205 is further provided with a rib plate 207. In this way, if the cover 20 of the single-loop electric energy meter is installed in the double-loop electric energy meter, the rib plate 207 will interfere with the terminal block 11 on the second side wall 206, resulting in failure to complete the installation, thereby playing a foolproof role.

[0093] In some embodiments, as shown in Figure 1 , Figure 2 andFigure 3 As shown, the base 10 is provided with a first connecting column 14, the first connecting column 14 is provided with a first mounting hole 15, the cover 20 is provided with a second connecting column 23, the second connecting column 23 is provided with a second mounting hole 24. The electric energy meter 100 can include a fixing member, the fixing member is arranged in the first mounting hole 15 and the second mounting hole 24.

[0094] The base 10 and the cover 20 can be connected through the fixing member. Specifically, the first connecting column 14 and the second connecting column 23 are opposite, the first connecting column 14 is provided with the first mounting hole 15, the second connecting column 23 is provided with the second mounting hole 24, and the first mounting hole 15 and the second mounting hole 24 are also opposite. In this way, the fixing member can be arranged in the first mounting hole 15 and the second mounting hole 24, so that the fixing member can connect the first connecting column 14 and the second connecting column 23, thereby realizing the connection of the base 10 and the cover 20.

[0095] It should be noted that the fixing member can be a threaded member such as a screw, a bolt, or a pin, and the like. The specific type of the fixing member is not limited in the embodiment of the present application.

[0096] In addition, in the electric energy meter 100, it is also necessary to avoid unauthorized users from opening the electric energy meter 100 privately, so as to ensure the accuracy of the electric energy meter 100. In the present application, the electric energy meter 100 can also include a tail cover 40, the tail cover 40 is connected to the cover 20, and the projection of the tail cover 40 blocks the fixing member in the direction from the cover 20 to the base 10. The tail cover 40 is provided with a lead seal member, such as Figure 9 As shown.

[0097] Through the above arrangement, the tail cover 40 can block the position of the fixing member. In this way, the tail cover 40 will interfere with the screwing of the fixing member when the tail cover 40 is provided with a lead seal member and the lead seal member is not damaged, so that the user cannot insert a wrench, screwdriver or other tools above the fixing member, thereby reducing the possibility of manually removing the fixing member.

[0098] In the embodiment of the present application, since at least part of the hole wall of the terminal hole 201 close to the base 10 is opposite to the preset gap 13, the hole wall of the terminal hole 201 can block the preset gap 13. In this way, when the external wire row 30 is not plugged with the terminal block 11, the cover 20 can block the preset gap 13 through the hole wall of the terminal hole 201, which can reduce the exposure of the preset gap 13, so that the possibility of foreign matter entering the inside of the base 10 through the preset gap 13 is reduced, thereby reducing the influence of foreign matter on the work of the terminal block 11, and improving the stability of the work of the electric energy meter 100.

[0099] Finally, it should be noted that the above embodiments are merely specific embodiments of the present application, and the protection scope of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed by the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An electricity meter, characterized in that, include: The base has a wiring board installed inside, the wiring board has wiring terminals, and there is a preset gap between the inner wall of the base and the wiring board; The watch cover is fastened to the base, and the watch cover is provided with terminal holes, which are opposite to the wiring terminals; An external terminal block is connected to a terminal block via a terminal hole, and the external terminal block is used to connect to an external circuit. Wherein, at least a portion of the hole wall near the base of the terminal hole is opposite to the preset gap.

2. The electricity meter according to claim 1, characterized in that, The terminal block has a first surface facing the cover, and the terminal block is disposed on the first surface; In the insertion direction of the external terminal block and the terminal block, the hole wall of the terminal block near the base is flush with the first surface, or the hole wall of the terminal block near the base is located on the side of the first surface away from the cover.

3. The electricity meter according to claim 1, characterized in that, The watch cover includes a body and a connecting wall, the connecting wall being connected to the side of the watch cover facing the base, and the terminal hole being disposed on the connecting wall; The portion of the connecting wall located on the side of the terminal hole facing the base abuts against the terminal block.

4. The electricity meter according to claim 3, characterized in that, The main body and the connecting wall are integrally formed.

5. The electricity meter according to claim 1, characterized in that, The external terminal block includes interconnected wiring sections and plug-in sections. The plug-in sections are plugged into the wiring terminals, and the wiring sections are used to connect to external circuits. The terminal hole includes a first hole and a second hole. The first hole is located on the side away from the wiring terminal, and the second hole is disposed at the bottom of the first hole. The first hole is located near the hole wall of the base and is opposite to the preset gap. When the external terminal block is plugged into the terminal block, the wiring portion is located in the first hole, and the plugging portion is located in the second hole.

6. The electricity meter according to claim 5, characterized in that, The cover is provided with a fixing hole on the side away from the base, and the fixing hole communicates with the first hole. The wiring part is provided with a wiring hole on the side away from the wiring terminal. The wiring part is provided with a fastener on the side away from the base, and the fastener is exposed through the fixing hole. When the external terminal block is connected to the external circuit, the external circuit extends into the terminal hole, and the fastener can fix the external circuit.

7. The electricity meter according to claim 1, characterized in that, The cover includes opposing first sidewalls and second sidewalls; The terminal hole is disposed on the first side wall, and the terminal hole penetrates the first side wall along the direction from the first side wall to the second side wall. A stiffener is disposed on the surface of the second side wall facing the first side wall.

8. The electricity meter according to claim 1, characterized in that, The cover includes a first sidewall and a second sidewall, both of which are provided with terminal holes. The terminal block is provided with two terminals, which are spaced apart along the distribution direction of the first sidewall and the second sidewall. One of the terminals is opposite to the terminal hole on the first sidewall, and the other terminal is opposite to the terminal hole on the second sidewall. Both terminals are plugged into the external terminal block.

9. The electricity meter according to claim 1, characterized in that, The base is provided with a first connecting post, and the first connecting post is provided with a first mounting hole; the cover is provided with a second connecting post, and the second connecting post is provided with a second mounting hole. The electricity meter includes a fixing member, which passes through the first mounting hole and the second mounting hole.

10. The electricity meter according to claim 9, characterized in that, The electricity meter also includes a tail cover, which is connected to the meter cover. In the direction from the meter cover to the base, the projection of the tail cover blocks the fixing member, and a lead seal is provided on the tail cover.

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