Bottom shell of electric energy meter and electric energy meter

Abstract

The utility model relates to the technical field of electric energy meters, in particular to a bottom shell of an electric energy meter and the electric energy meter. The bottom shell comprises a bottom plate and a first limiting structure. The first limiting structure is arranged on the side, used for installing the relay, of the bottom plate and comprises a first limiting piece and a second limiting piece which are arranged in a spaced mode in the first direction, and a third limiting piece and a fourth limiting piece which are arranged in a spaced mode in the second direction. The first limiting piece, the second limiting piece, the third limiting piece, the fourth limiting piece and the bottom plate jointly define a first limiting groove. And the first limiting groove can be matched with the shell of the relay to limit the displacement of the relay in the first direction and the second direction, so that the relay can be positioned in the first direction and the second direction in the bottom shell. According to the design structure, shaking of the relay in the first direction and the second direction is avoided, abrasion of the relay and related structures is reduced, the problem of contact stress does not exist, and therefore the overall quality of the relay and the overall quality of the electric energy meter are remarkably improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electric energy meters, in particular to a bottom shell of an electric energy meter and the electric energy meter. BACKGROUND

[0002] An electric energy meter is a device for measuring and recording the power consumption of a power user. In the electric energy meter, a relay is a key component mainly used for controlling the on-off of a power supply circuit.

[0003] The relay is usually located in the bottom shell of the electric energy meter. In order to prevent the relay from shaking in the bottom shell, the related technology adopts a screw to fix the relay on the bottom shell. This installation structure is easy to cause stress to the contacts inside the relay, which affects the switching performance of the relay. UTILITY MODEL CONTENT

[0004] The application provides a bottom shell of an electric energy meter and the electric energy meter. The bottom shell of the electric energy meter limits the displacement of the relay through a limiting structure, can prevent the relay from shaking, and does not have the problem of contact stress, thereby improving the working reliability of the relay and the quality of the electric energy meter.

[0005] The technical solution of the application is as follows:

[0006] In a first aspect, the application provides a bottom shell of an electric energy meter. The bottom shell comprises a bottom plate and a first limiting structure. The first limiting structure is arranged on one side of the bottom plate for installing a relay and comprises first and second limiting members arranged at intervals along a first direction, and third and fourth limiting members arranged at intervals along a second direction.

[0007] The first, second, third and fourth limiting members together with the bottom plate form a first limiting groove. The first limiting groove can be matched with the shell of the relay to limit the displacement of the relay in the first and second directions, wherein the first and second directions are perpendicular to each other.

[0008] In a second aspect, based on the same inventive concept, the application further provides an electric energy meter. The electric energy meter comprises the bottom shell and a relay. The bottom shell is the bottom shell described above, and the relay comprises a shell. At least part of the shell is embedded in the first limiting groove.

[0009] Based on the bottom shell provided in the first aspect and the electric energy meter provided in the second aspect, the first limiting structure can effectively limit the displacement of the shell of the relay in the first and second directions, thereby realizing the positioning of the relay in the bottom shell in the first and second directions. This design not only avoids the shaking of the relay in the first and second directions, but also reduces the wear of the relay and related structures, and does not have the problem of contact stress, thereby significantly improving the overall quality of the relay and the electric energy meter.

[0010] In a possible design, the bottom shell further includes a second limiting structure, the second limiting structure includes a first supporting part and a second supporting part connected with the bottom plate, and the first supporting part and the second supporting part are arranged on opposite sides of the first limiting structure along a first direction.

[0011] The first supporting part is used for supporting an incoming line end conductor of the relay at an end thereof away from the bottom plate along a third direction, and the second supporting part is used for supporting an outgoing line end conductor of the relay at an end thereof away from the bottom plate along the third direction. The first direction, the second direction and the third direction are perpendicular to each other.

[0012] Based on the bottom shell provided in this embodiment, the first supporting part is used for supporting the incoming line end conductor of the relay at an end thereof away from the bottom plate along the third direction, and the second supporting part is used for supporting the outgoing line end conductor of the relay at an end thereof away from the bottom plate along the third direction, so that the mounting position of the relay in the third direction can be determined.

[0013] In a possible design, the relay includes an incoming line end conductor and an outgoing line end conductor, and the incoming line end conductor and the outgoing line end conductor extend towards two sides of the shell along a first direction respectively. When the bottom shell described above is used in the electric energy meter, the first supporting part is used for supporting the incoming line end conductor of the relay at an end thereof away from the bottom plate along a third direction, and the second supporting part is used for supporting the outgoing line end conductor of the relay at an end thereof away from the bottom plate along the third direction.

[0014] The electric energy meter includes a cover, a first pressing part is arranged at a position opposite to the first supporting part of the cover, and the first pressing part abuts against the incoming line end conductor. A second pressing part is arranged at a position opposite to the second supporting part of the cover, and the second pressing part abuts against the outgoing line end conductor.

[0015] Based on the electric energy meter provided in this embodiment, the cover includes a first pressing part arranged at a position opposite to the first supporting part, and the first pressing part abuts against the incoming line end conductor. The cover includes a second pressing part arranged at a position opposite to the second supporting part, and the second pressing part abuts against the outgoing line end conductor. In this way, the second limiting structure and the first pressing part and the second pressing part of the cover can limit the displacement of the relay in the third direction, and can prevent the shaking of the relay in the third direction.

[0016] In a possible design, the first limiting part is arranged close to the third limiting part along the second direction, the second limiting part is arranged close to the fourth limiting part along the second direction, and the first limiting part and the second limiting part have a spacing along the second direction. In this way, the first limiting part and the third limiting part are located on two adjacent sides of a rectangle, the second limiting part and the fourth limiting part are located on two adjacent sides of the rectangle, and the first limiting part and the second limiting part have a spacing along the second direction, so that the relay can be conveniently mounted.

[0017] In a possible design, the number of the first limiting structures is three, and the three first limiting structures are arranged along the second direction, and the adjacent two first limiting structures have a spacing in the second direction.

[0018] Based on the bottom shell provided by the embodiment, since the adjacent two first limiting structures have a spacing in the second direction, when the bottom shell is assembled with the relays, the adjacent two relays are also easy to keep a spacing, avoiding interference between the adjacent relays.

[0019] In a possible design, the number of the relays is three, and the three relays are arranged at the three first limiting structures respectively, and the adjacent two relays have a spacing.

[0020] Based on the electric energy meter provided by the embodiment, the adjacent two relays have a spacing, so that the electrical clearance between the different relays can be increased, the interference between the different relays can be reduced, and the reliability of the electric energy meter in operation can be improved.

[0021] In a possible design, the adjacent two first limiting structures are provided with an isolation rib, and the isolation rib is used to increase the creepage distance between the adjacent relays.

[0022] In a possible design, the electric energy meter comprises a circuit board, and the circuit board is provided with a fixing hole and a connecting hole.

[0023] The bottom shell comprises a support column for mounting the circuit board, and the support column is arranged on the side of the bottom plate for mounting the relays, and the end of the support column away from the bottom plate is provided with a positioning portion.

[0024] The circuit board is mounted in the bottom shell in a plug-in fit manner through the fixing hole and the positioning portion.

[0025] The relay is located between the bottom plate and the circuit board, and the pin of the relay is inserted into the connecting hole.

[0026] Based on the bottom shell and the electric energy meter provided by the embodiment, when the electric energy meter is assembled, the relay can be first mounted at the first limiting structure, and the pin of the relay is located on the side of the relay away from the bottom plate, then the fixing hole of the circuit board is aligned with the fixing portion of the support column, so that in the mounting process of the circuit board, the pin of the relay is also inserted into the connecting hole of the circuit board, the mechanical mounting of the relay and the circuit board is completed, then the pin and the connecting hole can be welded, and the electrical connection between the relay and the circuit board is realized. In this way, the assembly efficiency of the electric energy meter can be improved, and the overall layout of the electric energy meter is relatively simple and reasonable. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 A structure diagram of a relay used in an electric energy meter.

[0028] Figure 2 A perspective structural schematic view of an electric energy meter bottom shell provided by an embodiment of the present application.

[0029] Figure 3 A top view of the electric energy meter. Figure 2

[0030] Figure 4 A partial structural schematic view of a perspective structure of an electric energy meter provided by an embodiment of the present application.

[0031] Figure 5 A top view of the electric energy meter. Figure 4

[0032] Figure 6 An outer shape view of an electric energy meter provided by an embodiment of the present application.

[0033] Figure 7 A structural schematic view of a meter cover of the electric energy meter. Figure 6

[0034] An assembly structural view of a circuit board, a relay and a bottom shell in an electric energy meter provided by an embodiment of the present application. Figure 8

[0035] A structural schematic view of a circuit board used in an electric energy meter provided by an embodiment of the present application. Figure 9 In which the reference signs are:

[0036] 1, relay; 11, shell; 12, pin; 13, incoming end conductor; 14, outgoing end conductor;

[0037] 2, bottom shell; 21, bottom plate; 22, first limiting member; 23, second limiting member; 24, third limiting member; 25, fourth limiting member; 26, first support part; 27, second support part; 28, isolation rib; 29, support column; 291, positioning part;

[0038] 3, meter cover; 31, first pressing part; 32, second pressing part;

[0039] 4, circuit board; 41, fixing hole; 42, connecting hole;

[0040] D1, first direction; D2, second direction; D3, third direction.

[0041] DETAILED DESCRIPTION

[0042] ​​​In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application but not 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 the present application.

[0043] 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 this application belongs; the terminology used in the description herein is for describing the specific embodiments only and is not intended to be limiting of the application; the use of the terms "including", "comprising" and "having" and any variations thereof in the specification and claims and the description herein is intended to cover both the inclusive and exclusive cases.

[0044] Reference herein to "an embodiment" 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 "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive or alternative embodiments. It is expressly understood that the embodiments described herein are merely examples from a whole class of comparable embodiments which those of ordinary skill in the art reference in connection with the application.

[0045] In addition, the terms "first", "second", and the like in the description and claims of this application or the above drawings are used to distinguish different objects, and are not intended to describe a particular order, and can explicitly or implicitly include one or more of the features.

[0046] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more (including two).

[0047] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, the "connection" or "connection" of 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 of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] The present application will be described in detail below.

[0049] Figure 1 This is a schematic diagram of a relay used in an electricity meter. The relay 1 typically includes a housing 11, an electromagnetic coil, an armature, a contact structure, a pin 12, an input conductor 13, and an output conductor 14. The electromagnetic coil, armature, and contact structure are all located inside the housing 11. Part of the input conductor 13 is located inside the housing 11 and electrically connected to the corresponding contact; the other part is located outside the housing 11 and is used to connect to an external circuit. Part of the output conductor 14 is located inside the housing 11 and electrically connected to the corresponding contact; the other part is located outside the housing 11 and is used to connect to an external circuit. The pin 12 protrudes outside the housing 11, and the relay 1 is electrically connected to the circuit board inside the electricity meter through the pin 12. The pin 12 can feed back the state of the relay 1 (open, closed) to the circuit board, which can then control the electromagnetic coil through the pin 12, thereby controlling the state of the relay 1. When the electromagnetic coil is energized, it generates a magnetic field that attracts the armature, driving the contact structure to actuate and thus opening or closing the circuit.

[0050] Relay 1 is typically housed inside the base casing of the electricity meter. Due to its large size and weight, relay 1 is prone to shaking and impacts during transportation if not properly secured, which can affect the product's performance. In some technical solutions, screws are used to fix the input conductor 13 and output conductor 14 to the base casing to secure relay 1 within the casing. However, this method of fixing can easily cause stress and deformation in the input conductor 13 and output conductor 14 during installation, affecting the electrical connection between the input conductor 13, output conductor 14, and the corresponding contacts, leading to abnormal operation of relay 1.

[0051] Based on the above, this application provides a bottom casing for an electricity meter. Figure 2 This is a three-dimensional structural diagram of the bottom shell of an electricity meter provided in an embodiment of this application. Figure 3 for Figure 2 Top view.

[0052] Please combine Figure 2 and Figure 3 This application provides a base shell 2 for an electricity meter, the base shell 2 including a base plate 21 and a first limiting structure. The first limiting structure is disposed on the side of the base plate 21 for mounting a relay, including a first limiting member 22 and a second limiting member 23 spaced apart along a first direction D1, and a third limiting member 24 and a fourth limiting member 25 spaced apart along a second direction D2.

[0053] The first limiting member 22, the second limiting member 23, the third limiting member 24, and the fourth limiting member 25, together with the base plate 21, form a first limiting groove. The first limiting groove can be adapted to the relay housing to limit the displacement of the relay in the first direction D1 and the second direction D2, wherein the first direction D1 and the second direction D2 are perpendicular to each other.

[0054] Based on the same inventive concept, the application also provides an electric energy meter using the bottom shell 2, Figure 4 a partial structural schematic diagram of the three-dimensional structure of the electric energy meter provided by the embodiment of the application, Figure 5 for Figure 4 a top view.

[0055] Please refer to Figures 2 to 5 The electric energy meter of the application comprises a bottom shell 2 and a relay 1, and the bottom shell 2 comprises a bottom plate 21 and a first limiting structure. The first limiting structure is arranged on one side of the bottom plate 21 for mounting the relay 1, and comprises a first limiting piece 22 and a second limiting piece 23 arranged at intervals along a first direction D1, and a third limiting piece 24 and a fourth limiting piece 25 arranged at intervals along a second direction D2.

[0056] The first limiting piece 22, the second limiting piece 23, the third limiting piece 24, and the fourth limiting piece 25 together with the bottom plate 21 form a first limiting groove. The first limiting groove can be matched with the shell 11 of the relay 1 to limit the displacement of the relay 1 in the first direction D1 and the second direction D2, wherein the first direction D1 and the second direction D2 are perpendicular to each other. The relay 1 comprises the shell 11, and at least part of the shell 11 is embedded in the first limiting groove.

[0057] Please continue to refer to Figures 2 to 5 In the technical solution of the application, the bottom shell 2 comprises the bottom plate 21 and the first limiting structure, and the first limiting structure is arranged on one side of the bottom plate 21. In some embodiments, the bottom shell 2 can be a plastic part, and the first limiting structure comprising the first limiting piece 22, the second limiting piece 23, the third limiting piece 24, and the fourth limiting piece 25 can be made by one-piece molding with the bottom plate 21. In other embodiments, the first limiting structure can also be made separately from the bottom plate 21 and then assembled.

[0058] Please continue to refer to Figures 2 to 5 In the technical solution of the application, according to the requirements of the electric energy meter on the functions and installation of the bottom plate 21, the bottom plate 21 can have various structures, for example, in Figures 2 to 5 , the bottom plate 21 is not a flat plate, and the side of the bottom plate 21 where the relay 1 is arranged has concave parts and convex parts.

[0059] Please continue to refer to Figures 2 to 5 In the technical solution of the application, the first limiting structure is used to limit the displacement of the shell 11 of the relay 1 in the first direction D1 and the second direction D2. In Figures 2 to 5In the shown embodiment, the first limiting member 22, the second limiting member 23, the third limiting member 24 and the fourth limiting member 25 all adopt a quadrangular prism structure. The quadrangular prism structure is easy to form and matches the shape of the relay 1 housing 11, which is convenient for the relay 1 installation and can achieve good limiting effect. It should be noted that in actual application, the shapes of the first limiting member 22, the second limiting member 23, the third limiting member 24 and the fourth limiting member 25 are not limited to Figures 2 to 5 As shown, other shapes such as semi-cylindrical shape can also be adopted.

[0060] Please continue to refer to Figures 2 to 5 In the technical solution of the present application, the first limiting member 22, the second limiting member 23, the third limiting member 24, the fourth limiting member 25 and the bottom plate 21 together enclose the first limiting groove for limiting the position of the relay 1. The depth of the first limiting groove can be smaller than the height of the relay 1, and only part of the relay 1 housing 11 needs to be embedded in the first limiting groove, so that the first limiting groove can limit the relay 1. In some cases, the first limiting structure and the relay 1 are in transition fit, so that the installation is convenient and the limiting effect is good.

[0061] In summary, based on the bottom shell 2 and the electric energy meter provided in the present application, since the first limiting member 22 and the second limiting member 23 can be located on the opposite sides of the relay 1 housing 11 in the first direction D1, and the third limiting member 24 and the fourth limiting member 25 can be located on the opposite sides of the relay 1 housing 11 in the second direction D2, so that the first limiting structure can effectively limit the displacement of the relay 1 housing 11 in the first direction D1 and the second direction D2, thereby realizing the positioning of the relay 1 in the bottom shell 2 in the first direction D1 and the second direction D2. This design not only avoids the shaking of the relay 1 in the first direction D1 and the second direction D2, but also reduces the wear of the relay 1 and related structures, thereby significantly improving the overall quality of the relay 1 and the electric energy meter.

[0062] Please continue to refer to Figure 2 With Figure 3 In some embodiments of the present application, the bottom shell 2 further comprises a second limiting structure, the second limiting structure comprising a first support part 26 and a second support part 27, along the first direction D1, the first support part 26 and the second support part 27 are arranged on the opposite sides of the first limiting structure. Along the third direction D3, one end of the first support part 26 away from the bottom plate 21 is used to support the incoming line end conductor of the relay, and one end of the second support part 27 away from the bottom plate 21 is used to support the outgoing line end conductor of the relay. The first direction D1, the second direction D2 and the third direction D3 are perpendicular to each other.

[0063] Please combine Figures 2 to 5The relay 1 used in the electric energy meter includes an incoming terminal conductor 13 and an outgoing terminal conductor 14, which extend from the housing 11 to the two sides of the housing 11 in the first direction D1. When the bottom shell 2 is used in the electric energy meter, the first support portion 26 supports the incoming terminal conductor 13 of the relay 1 away from one end of the bottom plate 21 in the third direction D3, and the second support portion 27 supports the outgoing terminal conductor 14 of the relay 1 away from one end of the bottom plate 21 in the third direction D3.

[0064] Figure 6 An outer shape of an electric energy meter provided by an embodiment of the present application, Figure 7 For Figure 6 The structure diagram of the cover 3 of the electric energy meter is shown in FIG. 3. Please refer to FIGS. 1-3, Figure 4 , Figure 5 , Figure 6 and Figure 7 The electric energy meter includes the cover 3, the first pressing portion 31 is arranged at the position opposite to the first support portion 26 of the cover 3, and the first pressing portion 31 abuts against the incoming terminal conductor 13. The second pressing portion 32 is arranged at the position opposite to the second support portion 27 of the cover 3, and the second pressing portion 32 abuts against the outgoing terminal conductor 14.

[0065] Please continue to refer to FIGS. 1-4, Figures 4 to 7 The cover 3 of the electric energy meter is buckled with the bottom shell 2 to form an installation cavity and a protection cavity with a certain structure, which plays a role of installation, fixation and protection for the internal devices such as the relay 1 and the circuit board 4. In some embodiments of the present application, the relay 1 is installed in the bottom shell 2, and the relay 1 can be limited in displacement in the first direction D1 and the second direction D2 by the first limiting structure. On this basis, the bottom shell 2 further includes the second limiting structure, which includes the first support portion 26 and the second support portion 27. The first support portion 26 supports the incoming terminal conductor 13 of the relay 1 away from one end of the bottom plate 21 in the third direction D3, and the second support portion 27 supports the outgoing terminal conductor 14 of the relay 1 away from one end of the bottom plate 21 in the third direction D3. In this way, the installation position of the relay 1 in the third direction D3 can be determined. Further, the first pressing portion 31 is arranged at the position opposite to the first support portion 26 of the cover 3, and the first pressing portion 31 abuts against the incoming terminal conductor 13. The second pressing portion 32 is arranged at the position opposite to the second support portion 27 of the cover 3, and the second pressing portion 32 abuts against the outgoing terminal conductor 14. In this way, the cooperation of the second limiting structure and the first pressing portion 31 and the second pressing portion 32 of the cover 3 can limit the displacement of the relay 1 in the third direction D3, and further prevent the relay 1 from shaking in the third direction D3.

[0066] Please refer to FIGS. 1-5, Figure 2 and Figure 7In some embodiments of the present application, the first support portion 26 for supporting one end of the incoming line end conductor 13 can be in the shape of a rectangular recess, and correspondingly, the first pressing portion 31 on the watch case for abutting against the incoming line end conductor 13 is also in the shape of a rectangle, so that the first pressing portion 31 can better cooperate with the first support portion 26 and play a role of mutual limiting. Similarly, the second support portion 27 for supporting one end of the outgoing line end conductor 14 can be in the shape of a rectangular recess, and the second pressing portion 32 is also in the shape of a rectangle. It should be noted that Figure 2 With Figure 7 the specific shapes of the first support portion 26, the second support portion 27, the first pressing portion 31, and the second pressing portion 32 shown in

[0067] Please continue to refer to Figure 2 With Figure 3 In some embodiments of the present application, along the second direction D2, the first limiting member 22 is arranged close to the third limiting member 24, and the second limiting member 23 is arranged close to the fourth limiting member 25, and the first limiting member 22 and the second limiting member 23 have a spacing in the second direction D2. Thus, it is equivalent to that, in a rectangular region, the first limiting member 22 and the third limiting member 24 are located on two adjacent sides of the rectangle, the second limiting member 23 and the fourth limiting member 25 are located on the other two adjacent sides of the rectangle, and the first limiting member 22 and the second limiting member 23 have a spacing in the second direction D2, so as to facilitate the installation of the relay.

[0068] Please continue to refer to Figure 2 With Figure 3 In Figure 2 With Figure 3 In the structure shown in the first limiting structure, the number of the first limiting member 22 is one, the number of the second limiting member 23 is one, the number of the third limiting member 24 is two, the two third limiting members 24 are arranged along the first direction D1, and the number of the fourth limiting member 25 is also two, and the two fourth limiting members 25 are also arranged along the first direction D1. It should be noted that in some other embodiments of the present application, in the first limiting structure, the number of the first limiting member 22, the second limiting member 23, the third limiting member 24, and the fourth limiting member 25 can be one or more.

[0069] Please refer to Figure 2 With Figure 3 In some embodiments of the present application, the number of the first limiting structure is three, and the three first limiting structures are arranged along the second direction D2 and have a spacing between adjacent two first limiting structures.

[0070] Please refer to Figure 3 With Figure 4 In some embodiments of the electric energy meter of the present application, the number of relays 1 is three, and the three relays 1 are arranged at three first limiting structures, respectively, and have a spacing between adjacent two relays 1.

[0071] Please refer to Figures 2 to 4 When the electric energy meter is a three-phase electric energy meter, there are three relays 1 in the electric energy meter, which are A-phase relay, B-phase relay and C-phase relay, respectively, and three first limiting structures can limit one of the relays 1 in the first direction D1 and the second direction D2, respectively. Adjacent two first limiting structures have a spacing, and adjacent two relays 1 have a spacing, so that the electrical clearance between different relays 1 can be increased, the interference between different relays 1 can be reduced, and the reliability and safety of the electric energy meter can be improved.

[0072] Please continue to refer to Figure 2 With Figure 3 In some embodiments of the present application, an isolation rib 28 is arranged between adjacent two first limiting structures, and the isolation rib 28 is used to increase the creepage distance between adjacent relays.

[0073] Specifically, in the structure shown in Figure 2 , Figure 3 An isolation rib 28 is arranged between adjacent two first limiting structures, one of the fourth limiting members 25 of the adjacent two first limiting structures is arranged on one side of the isolation rib 28, and the third limiting member 24 of the other limiting structure is arranged on the other side of the isolation rib 28, so that the isolation rib 28 not only increases the creepage distance between adjacent relays 1, but also increases the strength of the first limiting structure, thereby enhancing the limiting effect of the first limiting structure.

[0074] It should be noted that Figure 2 With Figure 3 The combination structure of the first limiting structure and the isolation rib 28 shown is only one embodiment of the present application, and based on the realization of the basic isolation function of the isolation rib 28, the isolation rib 28 can also be arranged in other ways.

[0075] Please continue to refer to Figure 2 In some embodiments of the present application, the bottom shell 2 includes a support column 29 arranged on the side of the bottom plate 21 for mounting the relay, and the end of the support column 29 away from the bottom plate 21 is provided with a positioning part 291 for mounting the circuit board of the electric energy meter.

[0076] Figure 8 An assembly structure diagram of a circuit board, a relay and a bottom shell in an electric energy meter provided by an embodiment of the present application, Figure 9A structural schematic diagram of a circuit board 4 used in an electric energy meter is provided in the embodiments of the present application. Please refer to Figure 2 , Figure 4 , Figure 8 and Figure 9 , the electric energy meter comprises the circuit board 4, and the circuit board 4 is provided with a fixing hole 41 and a connecting hole 42. The circuit board 4 is installed in the bottom shell 2 through the fixing hole 41 and the plug-in cooperation with the positioning part 291. The relay 1 is located between the bottom plate 21 and the circuit board 4, and the pin 12 of the relay 1 is inserted into the connecting hole 42.

[0077] Please refer to Figure 4 , Figure 8 and Figure 9 , when assembling the electric energy meter, the relay 1 can be first installed at the first limiting structure, and the pin 12 of the relay 1 is located at the side of the relay 1 away from the bottom plate 21, then the fixing hole 41 of the circuit board 4 is aligned with the fixing part of the support column 29, so that during the installation of the circuit board 4, the pin 12 of the relay 1 is also inserted into the connecting hole 42 of the circuit board 4, the mechanical installation of the relay 1 and the circuit board 4 is completed, then the pin 12 and the connecting hole 42 can be welded to realize the electrical connection between the relay 1 and the circuit board 4.

[0078] As can be seen from the above, based on the electric energy meter provided in the embodiments, the mechanical combination between the relay 1 and the circuit board 4 can be realized when the circuit board 4 is installed, so as to facilitate improving the assembly efficiency of the electric energy meter, and the overall layout of the electric energy meter is relatively simple and reasonable.

[0079] Please continue to refer to Figure 2 , in the structure shown in Figure 2 , the shape of the positioning part 291 at one end of the support column 29 is cylindrical. However, in the technical solution of the present application, the shape of the positioning part 291 is not limited to cylindrical, but can also be a circular truncated cone, a semi-cylindrical or other special-shaped structures.

[0080] It should be noted that Figures 4 to 8 shows a partial structural diagram of a three-phase electric energy meter, but the technical solution of the present application can not only be applied to a three-phase electric energy meter, but also to a single-phase electric energy meter.

[0081] As shown in Figures 4 to 8 , when the technical solution of the present application is applied to a three-phase electric energy meter, the number of the first limiting structures is three, the three first limiting structures are arranged along the second direction D2, and the number of the second limiting structures is also three, the second limiting structures are arranged one by one corresponding to the first limiting structures. The number of the first pressing parts 31 and the second pressing parts 32 is three respectively, and the number of the relays 1 is also three, the three relays 1 are correspondingly limited by the three first limiting structures, the three second limiting structures, the three first pressing parts 31 and the three second pressing parts 32.

[0082] When the technical solution of the present application is applied to a single-phase electric energy meter, only one first limiting structure, one second limiting structure and one relay 1 can be arranged in the bottom shell 2. One first pressing part 31 and one second pressing part 32 are correspondingly arranged on the cover 3. The relay 1 is positioned by the first limiting structure, the second limiting structure, the first pressing part 31 and the second pressing part 32.

[0083] It should be further noted that, Figures 4 to 8 The electric energy meter provided by the present application is not a complete structure diagram, but only a partial structure diagram of the electric energy meter embodying the technical solution of the present application.

[0084] Those skilled in the art can understand that the combination of features of different embodiments means to be within the scope of the present application and form different embodiments, although some embodiments herein include certain features rather than other features included in other embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0085] The above, the above embodiments are only used to illustrate the technical solution of the present application, rather than limit it. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solution recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently. The modification or replacement does not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiments of the present application.

Claims

1. A base housing of an electric energy meter, characterized by, The bottom plate and the first limiting structure are arranged on one side of the bottom plate for mounting the relay. The first limiting structure is arranged on one side of the bottom plate for mounting the relay, and includes a first limiting member and a second limiting member arranged at intervals along a first direction, and a third limiting member and a fourth limiting member arranged at intervals along a second direction. The first limiting member, the second limiting member, the third limiting member, and the fourth limiting member jointly enclose the first limiting groove with the bottom plate.

2. The base pan of claim 1, wherein, The bottom shell further includes a second limiting structure, which includes a first support portion and a second support portion connected to the bottom plate. Along the first direction, the first support portion and the second support portion are arranged on opposite sides of the first limiting structure. Along a third direction, one end of the first support portion away from the bottom plate is used to support an incoming conductor of the relay, and one end of the second support portion away from the bottom plate is used to support an outgoing conductor of the relay. The first direction, the second direction, and the third direction are perpendicular to each other.

3. The base pan of claim 1, wherein, Along the second direction, the first limiting member is arranged close to the third limiting member, and the second limiting member is arranged close to the fourth limiting member.

4. The base cup of claim 1, wherein, The first limiting structure has a number of three, and the three first limiting structures are arranged along the second direction with a spacing between adjacent first limiting structures.

5. The base pan of claim 4, wherein, An isolation rib is arranged between adjacent first limiting structures to increase the creepage distance between adjacent relays.

6. The base pan according to any one of claims 1 to 5, wherein The bottom shell includes a support column arranged on one side of the bottom plate for mounting the relay, and one end of the support column away from the bottom plate is provided with a positioning portion for mounting a circuit board of an electric energy meter.

7. An electric energy meter, characterized by The bottom shell includes a support column arranged on one side of the bottom plate for mounting the relay, and one end of the support column away from the bottom plate is provided with a positioning portion for mounting a circuit board of an electric energy meter.

8. The electric energy meter of claim 7, wherein, The relay includes an incoming conductor and an outgoing conductor, and along the first direction, the incoming conductor and the outgoing conductor extend from inside the shell to both sides of the shell respectively. Along a third direction, one end of the first support portion away from the bottom plate supports the incoming conductor of the relay, and one end of the second support portion away from the bottom plate supports the outgoing conductor of the relay. The electric energy meter includes a cover, and the cover is provided with a first pressing portion opposite the first support portion, the first pressing portion abuts against the incoming conductor; and the cover is provided with a second pressing portion opposite the second support portion, the second pressing portion abuts against the outgoing conductor.

9. The power meter of claim 7, wherein, The bottom shell is a bottom shell of a three-phase electric energy meter, and the first limiting structure has a number of three, and the three first limiting structures are arranged along the second direction with a spacing between adjacent first limiting structures. The number of the relays is three, and three of the relays are arranged at three first limiting structures, and there is a spacing between two adjacent relays.

10. The electric energy meter according to any one of claims 7 to 9, characterized in that, The electric energy meter comprises a circuit board, and the circuit board is provided with a fixing hole and a connecting hole; The bottom shell comprises a support column for mounting the circuit board, one end of the support column away from the bottom plate is provided with a positioning part; The circuit board is installed in the bottom shell through the plug-in cooperation of the fixing hole and the positioning part; The relay is located between the bottom plate and the circuit board, and the pin of the relay is inserted into the connecting hole.

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