Electric energy meter

Abstract

The utility model provides an electric energy meter, and relates to the technical field of electrical instruments. The electric energy meter has a first direction and a second direction which intersect with each other. The electric energy meter comprises a bottom shell, an upper cover and two fasteners. The bottom shell is provided with a first side and a second side which are opposite in the first direction, the first side is provided with a first fixing hole, the second side is provided with a second fixing hole, and the first fixing hole and the second fixing hole are distributed in the two opposite sides of the bottom shell in the second direction. The upper cover and the bottom shell are oppositely arranged and mutually clamped, a third fixing hole and a fourth fixing hole are formed in the upper cover, the third fixing hole is opposite to the first fixing hole, and the fourth fixing hole is opposite to the second fixing hole. Wherein one fastener is arranged in the first fixing hole and the third fixing hole in a penetrating manner, and the other fastener is arranged in the second fixing hole and the fourth fixing hole in a penetrating manner. Therefore, the electric energy meter can adapt to electric energy meters with small sizes, and the possibility that the bottom shell and the upper cover are difficult to connect or even cannot be connected due to space limitation can be reduced.

Description

Technical Field

[0001] This application relates to the field of electrical instrumentation technology, and more particularly to an energy meter. Background Technology

[0002] Electricity meters are commonly used instruments for measuring electricity and are widely used in various fields such as homes and industries. Generally, the housing of an electricity meter consists of an interlocking bottom shell and a top cover. The electronic components of the electricity meter can be housed inside the housing to measure the amount of electricity consumed.

[0003] In related technologies, the connection method between the bottom shell and the top cover is not reasonable and cannot be adapted to various types of electricity meters. Especially for smaller electricity meters, space constraints may make it difficult or even impossible to connect the bottom shell and the top cover. Utility Model Content

[0004] This application provides an electricity meter that can improve the connection method between the bottom shell and the top cover of the electricity meter, so as to adapt to electricity meters of different sizes and reduce the possibility of difficulties or even inability to connect the bottom shell and the top cover due to space limitations.

[0005] In a first aspect, this application provides an electricity meter having intersecting first and second directions. The electricity meter includes a bottom shell, a top cover, and two fasteners. The bottom shell has a first side and a second side opposite to each other along the first direction. The first side has a first fixing hole, and the second side has a second fixing hole. The first and second fixing holes are distributed on opposite sides of the bottom shell along the second direction. The top cover is disposed opposite to the bottom shell and interlocks with it. The top cover has a third fixing hole and a fourth fixing hole, the third fixing hole being opposite to the first fixing hole, and the fourth fixing hole being opposite to the second fixing hole. One fastener passes through the first and third fixing holes, and the other fastener passes through the second and fourth fixing holes.

[0006] In this embodiment, the bottom shell and top cover are connected by two fasteners and a snap-fit ​​mechanism, reducing the number of fasteners and simplifying the installation process. Furthermore, the two fasteners are staggered, minimizing their space requirements and accommodating various sizes of electricity meters. This is particularly beneficial for smaller electricity meters, reducing the likelihood of space constraints preventing connection difficulties or even impossible connections between the bottom shell and top cover.

[0007] Optionally, a first snap-fit ​​component is provided on the bottom shell, and a second snap-fit ​​component is provided on the top cover. The bottom shell and the top cover are snapped together by the first snap-fit ​​component and the second snap-fit ​​component.

[0008] With the above configuration, when the bottom shell and the top cover are connected, the first snap-fit ​​component can be opposite to the second snap-fit ​​component and snap together. This allows the bottom shell and the top cover to be snapped together, increasing the stability of the connection.

[0009] Optionally, the first snap-fit ​​component is one of the snap-fit ​​boss and the snap-fit ​​groove, and the second snap-fit ​​component is the other of the snap-fit ​​boss and the snap-fit ​​groove.

[0010] The snap-fit ​​boss and the snap-fit ​​groove are two structures that can cooperate to achieve snap-fit. Both the first and second snap-fit ​​components can have both snap-fit ​​bosses and snap-fit ​​grooves, which can improve the flexibility of the design of the first and second snap-fit ​​components.

[0011] Optionally, a first mating wall is provided on the side of the bottom shell facing the top cover, and a second mating wall is provided on the side of the top cover facing the bottom shell. On the same side of the energy meter in the first direction, the first mating wall and the second mating wall are offset. A first snap-fit ​​member is provided on the side of the first mating wall facing the second mating wall, and a second snap-fit ​​member is provided on the side of the second mating wall facing the first mating wall.

[0012] Thus, the first mating wall provides a mounting position for the first snap-fit ​​component, and the second mating wall provides a mounting position for the second snap-fit ​​component. Since the first and second mating walls are located on the same side of the electricity meter and are misaligned, interference between the first and second mating walls can be reduced when connecting the bottom shell and the top cover, thus reducing the possibility of problems such as the bottom shell and top cover not being able to assemble.

[0013] Optionally, the bottom shell includes a bottom plate and a side wall. The side wall is connected to the side of the bottom plate facing the top cover and is disposed around the periphery of the bottom plate. Both the first fixing hole and the second fixing hole are disposed on the bottom plate. In a first direction, the side wall has opposing first sub-walls and second sub-walls. The side of the first sub-wall facing the top cover and / or the side of the second sub-wall facing the top cover are provided with a first mating wall.

[0014] That is, the first mating wall can be set on the first sub-wall or the second sub-wall, or the number of first mating walls can be two, and the two first mating walls can be set on the first sub-wall and the second sub-wall respectively. In this way, the first snap-fit ​​member can be set in different positions on the bottom shell, making the setting of the first snap-fit ​​member more flexible.

[0015] Optionally, the bottom shell and the top cover form a mounting cavity, and on one side of the energy meter along the first direction, the first mating wall is away from the mounting cavity. A first support wall is provided on the bottom shell, a portion of the first support wall is opposite to the first mating wall, and a second mating wall is located between the first mating wall and the first support wall, and abuts against both the first mating wall and the first support wall respectively.

[0016] In this way, the first mating wall and the first supporting wall can sandwich the second mating wall in the middle. The first mating wall and the first supporting wall can limit the second mating wall, reducing the possibility that the second mating wall is easy to shift in the first direction X, which may cause the top cover and the bottom shell to misalign. This makes the outer surface of the electricity meter relatively flush after the bottom shell and the top cover are connected.

[0017] Optionally, a guide surface is provided on the side of the first support wall facing the upper cover, with the side of the guide surface facing the upper cover away from the second mating wall, and the side of the guide surface away from the upper cover close to the second mating wall. The guide surface is used to guide the upper cover when it mates with the bottom shell.

[0018] The above settings allow for a smoother fit between the top cover and the bottom shell, reducing the possibility that the small distance between the first mating wall and the first supporting wall might make it difficult to smoothly insert the second mating wall.

[0019] Optionally, there may be multiple first support walls, which are distributed at intervals along the second direction, and each of the multiple first support walls abuts against the second mating wall.

[0020] With the above configuration, after the bottom shell and the top cover are fitted together, multiple first support walls can abut against the second mating walls. Based on this, the first support walls can limit the second mating walls at multiple positions, resulting in a better limiting effect of the first support walls on the second mating walls. This can further reduce the possibility of displacement of the second mating walls, which could lead to misalignment between the top cover and the bottom shell, and improve the flatness of the side of the electricity meter.

[0021] Optionally, the bottom shell is provided with multiple first snap-fit ​​components, and the top cover is provided with multiple second snap-fit ​​components, with the multiple first snap-fit ​​components and the multiple second snap-fit ​​components snap-fit ​​into each other in a one-to-one correspondence.

[0022] With the above configuration, the bottom shell and the top cover can be snapped together at multiple locations, which can improve the connection strength between the bottom shell and the top cover, and improve the overall strength and stability of the electricity meter.

[0023] Optionally, the top cover is provided with a first countersunk hole, and a third fixing hole is provided at the bottom of the first countersunk hole, with a lead seal provided in the first countersunk hole. And / or, the top cover is also provided with a second countersunk hole, and a fourth fixing hole is provided at the bottom of the second countersunk hole, with a lead seal provided in the second countersunk hole.

[0024] In this way, the lead seal can cover the fasteners, thereby reducing the possibility of unauthorized disassembly and reassembly of the electricity meter after it is put into use. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of an electricity meter according to an embodiment of this application.

[0026] Figure 2This is an exploded view of an electricity meter according to an embodiment of this application.

[0027] Figure 3 This is a schematic diagram of a top cover according to an embodiment of this application from a certain perspective.

[0028] Figure 4 This is a schematic diagram of a bottom shell according to an embodiment of this application.

[0029] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0030] Figure 6 This is one of the cross-sectional views of an electricity meter according to an embodiment of this application.

[0031] Figure 7 This is a schematic diagram of a cover according to an embodiment of this application from another perspective.

[0032] Figure 8 This is a second cross-sectional view of an electricity meter according to an embodiment of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100: Electricity meter; 1001: Mounting cavity; 10: Bottom shell; 101: First side; 111: First fixing hole; 102: Second side; 112: Second fixing hole; 103: Bottom plate; 104: Side wall; 105: First sub-wall; 106: Second sub-wall; 11: First snap-fit ​​component; 12: First mating wall; 13: First support wall; 131: Guide surface; 20: Top cover; 211: Third fixing hole; 2 12: Fourth fixing hole; 21: Second snap-fit ​​component; 22: Second mating wall; 201: Cover plate; 202: Side plate; 203: First sub-plate; 204: Second sub-plate; 23: Second support wall; 24: First countersunk hole; 25: Second countersunk hole; 30: Fastener; 41: Snap-fit ​​boss; 411: Guide slope; 42: Snap-fit ​​groove; 50: Lead seal; X: First direction; Y: Second direction; Z: Third direction. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] 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 pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0037] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0038] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist simultaneously, or B exists. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0039] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0041] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection. A physical connection can be a fixed connection, such as a connection fixed by spacers, such as a connection fixed by screws, bolts, or other spacers; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0044] The electricity meter 100 provided in the embodiments of this application will now be described in detail with reference to the accompanying drawings. (Refer to...) Figure 1 and Figure 2 As shown, the electricity meter 100 in this application has intersecting first direction X and second direction Y. The electricity meter 100 includes a bottom shell 10, a top cover 20, and two fasteners 30.

[0045] Combined Figure 3 and Figure 4 As shown, the bottom shell 10 has a first side 101 and a second side 102 opposite to each other along the first direction X. The first side 101 is provided with a first fixing hole 111, and the second side 102 is provided with a second fixing hole 112. The first fixing hole 111 and the second fixing hole 112 are distributed on opposite sides of the bottom shell 10 along the second direction Y. The top cover 20 is disposed opposite to the bottom shell 10 and is interlocked with it. The top cover 20 is provided with a third fixing hole 211 and a fourth fixing hole 212. The third fixing hole 211 is opposite to the first fixing hole 111, and the fourth fixing hole 212 is opposite to the second fixing hole 112. One fastener 30 passes through the first fixing hole 111 and the third fixing hole 211, and another fastener 30 passes through the second fixing hole 112 and the fourth fixing hole 212.

[0046] In this embodiment of the application, the electricity meter 100 includes a bottom shell 10 and a top cover 20. The bottom shell 10 and the top cover 20 are disposed opposite to each other and can be connected by fasteners 30 or by snap-fit.

[0047] Specifically, the first side 101 of the bottom shell 10 is provided with a first fixing hole 111, and the second side 102 of the bottom shell 10 is provided with a second fixing hole 112. Since the first side 101 and the second side 102 of the bottom shell 10 are opposite each other in the first direction X, the first fixing hole 111 and the second fixing hole 112 are respectively located on opposite sides of the bottom shell 10.

[0048] In addition, the first fixing hole 111 and the second fixing hole 112 are located on opposite sides of the bottom shell 10 in the second direction Y. Thus, the first fixing hole 111 and the second fixing hole 112 are staggered in both the first direction X and the second direction Y.

[0049] At the top cover 20, a third fixing hole 211 and a fourth fixing hole 212 are provided. Since the third fixing hole 211 is opposite to the first fixing hole 111 and the fourth fixing hole 212 is opposite to the second fixing hole 112, the third fixing hole 211 and the fourth fixing hole 212 are also staggered in the first direction X and the second direction Y.

[0050] Thus, the fasteners 30 passing through the first fixing hole 111 and the third fixing hole 211 are also staggered with the fasteners 30 passing through the second fixing hole 112 and the fourth fixing hole 212. Based on this, the two fasteners 30 are also staggered, which allows the fasteners 30 to connect the bottom shell 10 and the top cover 20 on different sides, ensuring the stability of the connection between the bottom shell 10 and the top cover 20. This reduces the possibility of insufficient connection on one side of the bottom shell 10 and the top cover 20, making them prone to separation, when the number of fasteners 30 is small.

[0051] In addition, in this embodiment, the base is also snapped into the top cover 20. The snapping method can be combined with the connection at the fastener 30 to connect the bottom shell 10 and the top cover 20, which can further improve the reliability of the connection between the bottom shell 10 and the top cover 20, thereby improving the stability of the electricity meter 100.

[0052] In summary, in this embodiment, the bottom shell 10 and the top cover 20 are connected by two fasteners 30 and a snap-fit ​​connection between them, which reduces the number of fasteners 30 and simplifies the installation process. Furthermore, this application optimizes the position of the fasteners 30, connecting them in a staggered manner, thus minimizing their space occupation and accommodating various sizes of electricity meters 100. Especially for smaller electricity meters 100, this reduces the possibility of difficulties or even inability to connect the bottom shell 10 and top cover 20 due to space limitations.

[0053] It should be noted that in this application, the fastener 30 can have different structures, such as screws, bolts, or pins, etc. The specific type of fastener 30 is not specifically limited in this embodiment.

[0054] It should also be noted that the electricity meter 100 also has a third direction Z, which is the distribution direction of the bottom shell 10 and the top cover 20, and is perpendicular to the plane containing the first direction X and the second direction Y.

[0055] Generally, the projection of the electricity meter 100 on the plane containing the first direction X and the second direction Y is rectangular, that is, the electricity meter 100 has a cuboid-like structure. The first fixing hole 111 and the second fixing hole 112 can be respectively set at two opposite corners of the bottom shell 10, and the third fixing hole 211 and the fourth fixing hole 212 can be respectively set at two opposite corners of the top cover 20.

[0056] In this way, the two fasteners 30 can be set at the diagonal of the electricity meter 100, so that the force on the bottom shell 10 and the top cover 20 can be more even with fewer fasteners 30, and the connection strength between the bottom shell 10 and the top cover 20 can be ensured.

[0057] Wherein, the first direction X intersects with the second direction Y, and there may be an angle between the first direction X and the second direction Y. In the embodiments of this application, the angle between the first direction X and the second direction Y may be 70°, 78°, 85°, or 99°, etc.

[0058] As a preferred embodiment, the first direction X is the width direction of the electricity meter 100, and the second direction Y is the length direction of the electricity meter 100. In this case, the first direction X and the second direction Y can be perpendicular.

[0059] In order to make the solution and beneficial effects of this application clearer, this application will be described in detail in conjunction with relevant technologies.

[0060] In related technologies, the bottom case and top cover are typically connected using screws symmetrically arranged at the four corners. This results in the screws occupying a significant amount of space. Especially for narrower electricity meters, the width may not be sufficient to accommodate two screws. Alternatively, the distance between two screw holes distributed along the width of the electricity meter may be too small, causing interference between adjacent screws during installation and preventing the bottom case from being connected to the top cover.

[0061] In this embodiment, two fasteners 30 are provided on the electricity meter 100, and the two fasteners 30 are distributed along the diagonal direction of the electricity meter 100. Thus, the multiple fasteners 30 are staggered both along the length and width of the electricity meter 100. In other words, only one fastener 30 is provided on the same side of the electricity meter 100. This greatly reduces the space occupied by the fasteners 30 on the electricity meter 100, and also significantly reduces interference between different fasteners 30.

[0062] In addition, in this application, the bottom shell 10 and the top cover 20 are connected not only by two fasteners 30, but also by a snap-fit ​​connection, which can further improve the connection strength between the bottom shell 10 and the top cover 20, making the electricity meter 100 more stable in use.

[0063] In summary, the setting position of the fastener 30 in this embodiment has been optimized, so that the connection method between the bottom shell 10 and the top cover 20 proposed in this application can be adapted to different electricity meters 100, especially the connection between the bottom shell 10 and the top cover 20 of electricity meters 100 with a narrow width, thereby reducing the space occupied by the fastener 30 in the electricity meter 100.

[0064] The foregoing description has detailed the installation of fastener 30. Here, this application will describe the snap-fit ​​connection between the bottom shell 10 and the top cover 20 as follows. Figures 3 to 6 As shown, the bottom shell 10 is provided with a first snap-fit ​​member 11, and the top cover 20 is provided with a second snap-fit ​​member 21. The bottom shell 10 and the top cover 20 can be snapped together by the first snap-fit ​​member 11 and the second snap-fit ​​member 21.

[0065] With the above configuration, when the bottom shell 10 and the top cover 20 are connected, the first snap-fit ​​member 11 can be opposite to the second snap-fit ​​member 21 and snap-fit ​​together. In this way, the bottom shell 10 and the top cover 20 can be snapped together, thereby increasing the stability of the connection between the bottom shell 10 and the top cover 20.

[0066] In some embodiments, such as Figure 3 and Figure 4 As shown, a first mating wall 12 is provided on the side of the bottom shell 10 facing the top cover 20, and a second mating wall 22 is provided on the side of the top cover 20 facing the bottom shell 10. On the same side of the energy meter 100 in the first direction X, the first mating wall 12 and the second mating wall 22 are misaligned. A first snap-fit ​​member 11 can be provided on the side of the first mating wall 12 facing the second mating wall 22, and a second snap-fit ​​member 21 can be provided on the side of the second mating wall 22 facing the first mating wall 12.

[0067] In this embodiment, a first mating wall 12 is provided on the side of the bottom shell 10 facing the top cover 20, and a second mating wall 22 is provided on the side of the top cover 20 facing the bottom shell 10. Specifically, a first snap-fit ​​member 11 can be disposed on the first mating wall 12, and a second snap-fit ​​member 21 can be disposed on the second mating wall 22. Thus, when the bottom shell 10 and the top cover 20 are positioned opposite each other for connection, they can snap together at their respective positions.

[0068] In this application, a first mating wall 12 is provided on the bottom shell 10, and a second mating wall 22 is provided on the top cover 20. The first mating wall 12 provides a mounting position for the first snap-fit ​​member 11, and the second mating wall 22 provides a mounting position for the second snap-fit ​​member 21. Since the first mating wall 12 and the second mating wall 22 are located on the same side of the electricity meter 100, and the first mating wall 12 and the second mating wall 22 are misaligned, the possibility of interference between the first mating wall 12 and the second mating wall 22, which could prevent the bottom shell 10 and the top cover 20 from being assembled, can be reduced when connecting them.

[0069] To enable the first card connector 11 to engage with the second card connector 21, this embodiment further specifies the positions of the first card connector 11 and the second card connector 21. Specifically, the first card connector 11 is disposed on the side of the first mating wall 12 facing the second mating wall 22, and the second card connector 21 is disposed on the side of the second mating wall 22 facing the first mating wall 12. In this way, the first card connector 11 can be opposite the second card connector 21 so that the first card connector 11 and the second card connector 21 can engage.

[0070] Specifically, when assembling the bottom shell 10 and the top cover 20, the top cover 20 can be aligned with the bottom shell 10 first, and then the top cover 20 can be moved closer to the bottom shell 10 to reduce the distance between the top cover 20 and the bottom shell 10 until they abut against each other. During this process, the first mating wall 12 and the second mating wall 22 can be staggered, so that the first snap-fit ​​member 11 and the second snap-fit ​​member 21 move closer to each other until they snap into place.

[0071] Furthermore, in this embodiment, when the first snap-fit ​​member 11 and the second snap-fit ​​member 21 are snapped together, the surface of the bottom shell 10 with the first mating wall 12 abuts against the surface of the top cover 20 with the second mating wall 22. Thus, after the bottom shell 10 and the top cover 20 are connected, the possibility of gaps between them can be reduced.

[0072] In other words, compared with the method in related technologies where the bottom shell and the top cover are connected only by screws, the provision of the first and second snap-fit ​​components in this application can reduce the gap between the bottom shell and the top cover, which would affect the insulation performance of the electricity meter and make it easier for external moisture, dust and other impurities to enter the electricity meter through the gap, potentially damaging the electronic components inside the electricity meter.

[0073] Furthermore, the first mating wall 12 and the second mating wall 22 can also shield the joint between the bottom shell 10 and the top cover 20. Thus, even if there is a slight error in the positioning of the first latching member 11 and the second latching member 21, resulting in a small gap between the bottom shell 10 and the top cover 20, the first mating wall 12 and the second mating wall 22 can still shield external impurities from entering the gap, reducing the possibility of impurities entering the electricity meter 100.

[0074] In some embodiments, such as Figure 3 , Figure 4 and Figure 6 As shown, the first snap-fit ​​member 11 can be one of the snap-fit ​​boss 41 and the snap-fit ​​groove 42, and the second snap-fit ​​member 21 can be the other of the snap-fit ​​boss 41 and the snap-fit ​​groove 42.

[0075] The snap-fit ​​boss 41 and the snap-fit ​​groove 42 are two structures that can cooperate with each other to achieve snap-fit. In this embodiment, the first snap-fit ​​member 11 can be the snap-fit ​​boss 41, and the corresponding second snap-fit ​​member 21 can be the snap-fit ​​groove 42. At this time, the first snap-fit ​​member 11 can be embedded in the second snap-fit ​​member 21, and the second snap-fit ​​member 21 can limit the first snap-fit ​​member 11 to achieve the connection between the bottom shell 10 and the top cover 20.

[0076] Alternatively, the first snap-fit ​​member 11 can be a snap-fit ​​groove 42, in which case the second snap-fit ​​member 21 can be a snap-fit ​​protrusion 41. In this configuration, the second snap-fit ​​member 21 can be embedded in the first snap-fit ​​member 11, so that the first snap-fit ​​member 11 can limit the second snap-fit ​​member 21 and also realize the connection between the bottom shell 10 and the top cover 20.

[0077] To meet the insulation requirements of the electricity meter 100, the bottom shell 10 and the top cover 20 are generally made of plastic. In this application, the first mating wall 12 and the second mating wall 22 can also be made of plastic. The first mating wall 12 and the bottom shell 10 can be integrally formed, and the second mating wall 22 and the top cover 20 can be integrally formed.

[0078] This gives the first mating wall 12 and the second mating wall 22 a certain degree of elasticity. When assembling the bottom shell 10 and the top cover 20, under the action of the snap-fit ​​groove 42 provided in the first mating wall 12 and the second mating wall 22, the snap-fit ​​boss 41 can be compressed and deformed. When the snap-fit ​​boss 41 and the snap-fit ​​groove 42 are opposite each other, the snap-fit ​​boss 41 can restore its deformation and be embedded in the snap-fit ​​groove 42.

[0079] In this way, the first snap-fit ​​connector 11 and the second snap-fit ​​connector 21 can be snapped together. The design of the first snap-fit ​​connector 11 and the second snap-fit ​​connector 21 makes the assembly of the bottom shell 10 and the top cover 20 simpler and faster, reduces the assembly difficulty, and reduces the possibility of needing to use additional tools.

[0080] In addition, such as Figure 3 , Figure 4 and Figure 5 As shown, when the snap-fit ​​boss 41 is provided on the bottom shell 10, in order to make the snap-fit ​​between the snap-fit ​​boss 41 and the snap-fit ​​groove 42 smoother, a guide slope 411 can be provided on the side of the snap-fit ​​boss 41 facing the snap-fit ​​groove 42. The guide slope 411 is inclined away from the second mating wall 22 on the side facing the top cover 20. In this way, when the bottom shell 10 and the top cover 20 are snapped together, the snap-fit ​​boss 41 can be easily embedded in the snap-fit ​​groove 42 to achieve the snap-fit.

[0081] Correspondingly, when the snap-fit ​​boss 41 is provided on the upper cover 20, a guide slope 411 can also be provided on the snap-fit ​​boss 41, which will not be described in detail here.

[0082] In some embodiments, such as Figure 4 and Figure 6 As shown, the bottom shell 10 may include a bottom plate 103 and a side wall 104. The side wall 104 is connected to the side of the bottom plate 103 facing the top cover 20 and is arranged around the periphery of the bottom plate 103. The first fixing hole 111 and the second fixing hole 112 are both provided on the bottom plate 103. That is, the bottom shell 10 specifically includes a bottom plate 103 and a side wall 104, with the side wall 104 connected to the side of the bottom plate 103 facing the top cover 20. Since the side wall 104 surrounds the periphery of the bottom plate 103, the bottom plate 103 and the side wall 104 can be closed to form a hollow bottom shell 10, so that electronic components of the electricity meter 100 can be installed inside the bottom shell 10 to maintain the normal operation of the electricity meter 100.

[0083] The base plate 103 is opposite to the top cover 20. The first fixing hole 111 and the second fixing hole 112 can be provided on the base plate 103, so that the first fixing hole 111 and the second fixing hole 112 can extend in a third direction, so that the first fixing hole 111 and the second fixing hole 112 can be opposite to the top cover 20, so as to connect the bottom shell 10 and the top cover 20 by fasteners 30. The first mating wall 12 can be connected to the side wall 104.

[0084] In addition, in order to make the fastener 30 more stable in the first fixing hole 111 and the second fixing hole 112, two mounting posts extending in the third direction Z can be provided on the base plate 103. The first fixing hole 111 and the second fixing hole 112 can be respectively provided on the two mounting posts to increase the connection strength between the fastener 30 and the base shell 10.

[0085] In this application, such as Figure 3 , Figure 4 and Figure 6 As shown, in the first direction X, the sidewall 104 has a first sub-wall 105 and a second sub-wall 106 facing each other. The first sub-wall 105 is provided with a first mating wall 12 on the side facing the upper cover 20, and / or the second sub-wall 106 is provided with a first mating wall 12 on the side facing the upper cover 20.

[0086] That is, the first mating wall 12 can be disposed on the first sub-wall 105 or the second sub-wall 106, or the number of the first mating walls 12 can be 2, and the two first mating walls 12 can be disposed on the first sub-wall 105 and the second sub-wall 106 respectively. In this way, the first snap-fit ​​member 11 can be disposed at different positions on the bottom shell 10, making the placement of the first snap-fit ​​member 11 more flexible.

[0087] Similarly, such as Figures 3 to 7 As shown, the upper cover 20 may also include a cover plate 201 and a side plate 202. The side plate 202 surrounds the periphery of the cover plate 201 and is connected to the side of the cover plate 201 facing the bottom shell 10. The third fixing hole 211 and the fourth fixing hole 212 may be provided on the cover plate 201. In the first direction X, the side plate 202 has a first sub-plate 203 and a second sub-plate 204, and the second mating wall 22 can be set according to the setting method of the first mating wall 12.

[0088] Specifically, when the first mating wall 12 is located on the first sub-wall 105, the second mating wall 22 can be located on the first sub-plate 203, so that the first mating wall 12 and the second mating wall 22 are located on the same side of the energy meter 100, and the first mating wall 12 and the second mating wall 22 are offset from each other. At this time, the first snap-fit ​​member 11 and the second snap-fit ​​member 21 can fix the bottom shell 10 and the top cover 20 on the side of the first sub-wall 105.

[0089] Alternatively, if the first mating wall 12 is located on the second sub-wall 106, the second mating wall 22 can be located on the second sub-plate 204, such that the first mating wall 12 and the second mating wall 22 are located on the same side of the energy meter 100, and that the first mating wall 12 and the second mating wall 22 are offset from each other. In this case, the first snap-fit ​​member 11 and the second snap-fit ​​member 21 can fix the bottom shell 10 and the top cover 20 on the side of the second sub-wall 106.

[0090] Alternatively, the number of first mating walls 12 can be two, with one first mating wall 12 located on the first sub-wall 105 and the other second mating wall 22 located on the second sub-wall 106. In this case, the number of second mating walls 22 can also be two, with one second mating wall 22 located on the first sub-plate 203 and the other second mating wall 22 located on the second sub-plate 204.

[0091] In this configuration, both first mating walls 12 can be equipped with first snap-fit ​​members 11, and both second mating walls 22 can be equipped with second snap-fit ​​members 21. Thus, the first snap-fit ​​members 11 and second snap-fit ​​members 21 located on the same side of the energy meter 100 can snap together, allowing the bottom shell 10 and the top cover 20 to snap together from both sides. Therefore, the connection strength between the bottom shell 10 and the top cover 20 can be further improved.

[0092] In addition, in order to make the fastener 30 more stable in the third fixing hole 211 and the fourth fixing hole 212, two connecting posts extending in the third direction Z can also be provided on the cover plate 201. The third fixing hole 211 and the fourth fixing hole 212 can be respectively provided on the two connecting posts to increase the connection strength between the fastener 30 and the cover 20.

[0093] In this application, as Figure 1 , Figure 4 , Figure 6 and Figure 7 As shown, the bottom shell 10 and the top cover 20 can be enclosed to form a mounting cavity 1001, which provides a mounting position for electronic components and the like on the electricity meter 100. Referring to the foregoing description, the bottom shell 10 includes a bottom plate 103 and a side wall 104, which together form a hollow bottom shell 10. Similarly, the top cover 20 includes a cover plate 201 and a side plate 202, which together form a hollow top cover 20. Thus, when the bottom shell 10 and the top cover 20 are fastened together, the hollow portion of the bottom shell 10 and the hollow portion of the top cover 20 can communicate to form the mounting cavity 1001.

[0094] In some embodiments, such as Figure 1 , Figure 3 , Figure 4 and Figure 6As shown, on one side of the electricity meter 100 along the first direction X, the first mating wall 12 is away from the mounting cavity 1001. A first support wall 13 is provided on the bottom shell 10, a portion of the first support wall 13 is opposite to the first mating wall 12, and a second mating wall 22 is located between the first mating wall 12 and the first support wall 13, and abuts against the first mating wall 12 and the first support wall 13 respectively.

[0095] In this embodiment, on one side of the electricity meter 100, the first mating wall 12 is away from the mounting cavity 1001. Thus, the second mating wall 22, which is misaligned with the first mating wall 12, is close to the mounting cavity 1001. In other words, the first mating wall 12 is located on the outer side, and the second mating wall 22 is located on the inner side.

[0096] The bottom shell 10 is provided with a first support wall 13. Since part of the first support wall 13 is opposite to the first mating wall 12, the first support wall 13 has a portion that protrudes from the side wall 104. Thus, when the bottom shell 10 is fitted with the top cover 20, the second mating wall 22 can be located between the first mating wall 12 and the first support wall 13, and abut against both the first mating wall 12 and the first support wall 13.

[0097] Essentially, the first mating wall 12 and the first supporting wall 13 can clamp the second mating wall 22 between the first mating wall 12 and the first supporting wall 13. Based on this, the first mating wall 12 and the first supporting wall 13 can limit the second mating wall 22, reducing the possibility that the second mating wall 22 is prone to displacement in the first direction X, causing misalignment between the upper cover 20 and the bottom shell 10. This results in a more flush outer surface of the energy meter 100 after the bottom shell 10 and the upper cover 20 are connected, improving the flatness of the outer surface of the energy meter 100.

[0098] As a preferred embodiment, the outer surface of the first mating wall 12 can be flush with the outer surface of the side wall 104 of the bottom shell 10. Thus, when the bottom shell 10 and the top cover 20 are mated, the first mating wall 12, the side wall 104, and the side plate 202 on the side of the first mating wall 12 can serve as the outer surface of the electricity meter 100, which can reduce the possibility that the setting of the first mating wall 12 will affect the flatness of the outer surface of the electricity meter 100.

[0099] Furthermore, the first mating wall 12 is disposed on the side wall 104 of the bottom shell 10, which gives the side wall 104 a portion extending towards the upper cover 20. The second mating wall 22 is disposed on the side plate 202 of the upper cover 20, which gives the side plate 202 a portion extending towards the bottom shell 10. This arrangement physically increases the creepage distance between the electronic components inside the energy meter 100 and objects outside the energy meter, thereby increasing the electrical clearance between the inside and outside of the energy meter 100. This is beneficial for improving the anti-static performance of the energy meter 100 and can enhance the electrical safety and reliability of the energy meter 100.

[0100] In some embodiments, such as Figures 3 to 5 As shown, a guide surface 131 may be provided on the side of the first support wall 13 facing the upper cover 20. The side of the guide surface 131 facing the upper cover 20 is away from the second mating wall 22, and the side of the guide surface 131 away from the upper cover 20 is close to the second mating wall 22. The guide surface 131 is used to guide the upper cover 20 when it mates with the bottom shell 10.

[0101] With the above configuration, when the upper cover 20 and the bottom shell 10 are engaged, as the upper cover 20 and the bottom shell 10 approach each other, the second mating wall 22 can move along the guide surface 131, facilitating the second mating wall 22 to extend between the first mating wall 12 and the first support wall 13 and abut against them. This allows for a smoother engagement between the upper cover 20 and the bottom shell 10, reducing the possibility that a small distance between the first mating wall 12 and the first support wall 13 could hinder the smooth insertion of the second mating wall 22.

[0102] In some embodiments, such as Figure 3 and Figure 4 As shown, there can be multiple first support walls 13, which are distributed at intervals along the second direction Y, and all of the multiple first support walls 13 abut against the second mating wall 22.

[0103] With the above configuration, multiple first support walls 13 are provided along the second direction Y. Thus, after the bottom shell 10 and the top cover 20 are fitted together, all the first support walls 13 can abut against the second mating wall 22. Based on this, the first support walls 13 can limit the second mating wall 22 at multiple positions, resulting in a better limiting effect of the first support walls 13 on the second mating wall 22. This further reduces the possibility of displacement of the second mating wall 22, which could lead to misalignment between the top cover 20 and the bottom shell 10, and improves the flatness of the side of the electricity meter 100.

[0104] In addition, in other embodiments, the first mating wall 12 and the second mating wall 22 that cooperate with each other may also have other arrangements. For example, such as Figure 3 , Figure 4 and Figure 8 As shown, the second mating wall 22 is positioned away from the mounting cavity 1001, while the first mating wall 12 is positioned close to the mounting cavity 1001. At this time, a second support wall 23 can be provided on the upper cover 20, and the first mating wall 12 can be located between the second mating wall 22 and the second support wall 23, abutting against both the second mating wall 22 and the second support wall 23, thereby limiting the position of the first mating wall 12.

[0105] At this time, the second support wall 23 can also be provided with a sloped structure similar to the guide surface 131, and the number of second support walls 23 can also be multiple. For the specific arrangement of the second support wall 23, the cooperation between the second support wall 23 and the second mating wall 22 and the first mating wall 12, etc., please refer to the above description of the case where the first mating wall 12 is far away from the mounting cavity 1001, and will not be repeated here in the embodiments of this application.

[0106] Alternatively, to further improve the limiting effect on the upper cover 20 and reduce the possibility of misalignment between the upper cover 20 and the bottom shell 10, a first mating wall 12 can be provided on both the first sub-wall 105 and the second sub-wall 106. The two first mating walls 12 are respectively engaged with the two second mating walls 22.

[0107] At this time, on one side of the first direction X, the first mating wall 12 can be moved away from the mounting cavity 1001, and on the other side of the first direction X, the second mating wall 22 can be moved away from the mounting cavity 1001. In this way, the limiting between the upper cover 20 and the bottom shell 10 can be made more uniform, improving the stability of the mating between the upper cover 20 and the bottom shell 10.

[0108] In some embodiments, such as Figure 3 , Figure 4 and Figure 6 As shown, the bottom shell 10 can be provided with multiple first snap-fit ​​pieces 11, and the top cover 20 can be provided with multiple second snap-fit ​​pieces 21. The multiple first snap-fit ​​pieces 11 and the multiple second snap-fit ​​pieces 21 are snap-fitted one by one.

[0109] With the above configuration, the bottom shell 10 and the top cover 20 can be snapped together at multiple locations, which can improve the connection strength between the bottom shell 10 and the top cover 20, and improve the overall strength and stability of the electricity meter 100.

[0110] In the embodiments of this application, when the first mating wall 12 is provided as the first sub-wall 105 or the second sub-wall 106, a plurality of first snap-fit ​​members 11 can be provided on one mating wall, and correspondingly, a plurality of second snap-fit ​​members 21 can also be provided on one second mating wall 22.

[0111] When the number of first mating walls 12 is 2, one or more first snap-fit ​​pieces 11 can be provided on each of the two first mating walls 12, and the second snap-fit ​​pieces 21 can be provided accordingly.

[0112] It should be noted that when there are multiple first card connectors 11 and multiple second card connectors 21, the types of the multiple first card connectors 11 and the multiple second card connectors 21 can be different.

[0113] For example, some of the multiple first snap-fit ​​pieces 11 may be snap-fit ​​protrusions 41, while others may be snap-fit ​​grooves 42. Similarly, some of the multiple second snap-fit ​​pieces 21 may be snap-fit ​​protrusions 41, while others may be snap-fit ​​grooves 42. As long as the corresponding first snap-fit ​​pieces 11 and second snap-fit ​​pieces 21 can snap together, it is acceptable.

[0114] The specific configuration of the multiple first card connectors 11 and the multiple second card connectors 21 is not specifically limited in this embodiment.

[0115] In the electricity meter 100, to prevent unauthorized users from opening the meter 100, a lead seal 50 is also provided. In this application, the lead seal 50 can be located at the fastener 30 to restrict the installation and removal of the fastener 30. (See reference...) Figure 2 and Figure 7 .

[0116] Specifically, the top cover 20 is provided with a first countersunk hole 24, and a third fixing hole 211 is provided at the bottom of the first countersunk hole 24. A lead seal 50 is provided in the first countersunk hole 24. In this way, after the bottom shell 10 and the top cover 20 are connected, the lead seal 50 can cover the fastener 30 passing through the third fixing hole 211, so as to reduce the possibility of unauthorized disassembly of the electricity meter 100 by turning the fastener 30 after the electricity meter 100 is put into use.

[0117] Alternatively, the upper cover 20 may also have a second countersunk hole 25, with a fourth fixing hole 212 located at the bottom of the second countersunk hole 25, and a lead seal 50 installed in the second countersunk hole 25. Thus, after the bottom shell 10 and the upper cover 20 are connected, the lead seal 50 can cover the fastener 30 passing through the fourth fixing hole 212, reducing the possibility of unauthorized disassembly of the electricity meter 100 by turning the fastener 30 after the electricity meter 100 is put into use.

[0118] Alternatively, the top cover 20 may be provided with a first countersunk hole 24 and a second countersunk hole 25, and both the first countersunk hole 24 and the second countersunk hole 25 may be provided with lead seals 50.

[0119] In this embodiment, the position of the fastener 30 is optimized so that the fastener 30 is connected to the bottom shell 10 and the top cover 20 in a staggered manner. This reduces the space occupied by the fastener 30 and allows it to accommodate various sizes of electricity meters 100. Especially for smaller electricity meters 100, this reduces the possibility of difficulties or even inability to connect the bottom shell 10 and the top cover 20 due to space limitations.

[0120] Finally, it should be noted that the above embodiments are merely specific implementations of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An electric energy meter having a first direction and a second direction which intersect, characterized in that, The utility model relates to an electric energy meter fixing device, comprising: a bottom shell having a first side and a second side opposite to the first side in the first direction, the first side being provided with a first fixing hole, the second side being provided with a second fixing hole, the first fixing hole and the second fixing hole being distributed on opposite sides of the bottom shell in the second direction; an upper cover being opposite to the bottom shell and being clamped with each other, the upper cover being provided with a third fixing hole opposite to the first fixing hole and a fourth fixing hole opposite to the second fixing hole; two fasteners, one fastener being arranged in the first fixing hole and the third fixing hole, and the other fastener being arranged in the second fixing hole and the fourth fixing hole.

2. The electric energy meter according to claim 1, characterized in that, The bottom shell is provided with a first clamping part, the upper cover is provided with a second clamping part, and the bottom shell and the upper cover are clamped through the first clamping part and the second clamping part.

3. The electric energy meter of claim 2, wherein, The first clamping part is one of a clamping boss and a clamping groove, and the second clamping part is the other one of the clamping boss and the clamping groove.

4. The electric energy meter of claim 2, wherein, The bottom shell is provided with a first matching wall on the side facing the upper cover, the upper cover is provided with a second matching wall on the side facing the bottom shell, and the first matching wall and the second matching wall are staggered on the same side of the electric energy meter in the first direction. The first clamping part is arranged on the side of the first matching wall facing the second matching wall, and the second clamping part is arranged on the side of the second matching wall facing the first matching wall.

5. The electric energy meter of claim 4, wherein, The bottom shell comprises a bottom plate and a side wall connected to the side of the bottom plate facing the upper cover and arranged around the periphery of the bottom plate, and the first fixing hole and the second fixing hole are arranged on the bottom plate. In the first direction, the side wall has opposite first and second sub-walls. The first sub-wall and / or the second sub-wall are provided with the first matching wall on the side facing the upper cover.

6. The electric energy meter of claim 4, wherein, The bottom shell and the upper cover enclose a mounting cavity, and the first matching wall is away from the mounting cavity on the side of the electric energy meter in the first direction. The bottom shell is provided with a first support wall, part of the first support wall is opposite to the first matching wall, the second matching wall is located between the first matching wall and the first support wall, and abuts against the first matching wall and the first support wall respectively.

7. The electric energy meter of claim 6, wherein, The first support wall is provided with a guide surface on the side facing the upper cover, the guide surface is away from the second matching wall on the side facing the upper cover, and the guide surface is close to the second matching wall on the side facing away from the upper cover. The guide surface is used for guiding the upper cover when the upper cover is matched with the bottom shell.

8. The electric energy meter of claim 6, wherein, The number of the first support walls is a plurality, the plurality of first support walls are spaced apart in the second direction, and the plurality of first support walls all abut against the second matching wall.

9. The electric energy meter of claim 2, wherein, The bottom shell is provided with a plurality of first clamping parts, the upper cover is provided with a plurality of second clamping parts, and the plurality of first clamping parts and the plurality of second clamping parts are clamped in one-to-one correspondence.

10. The electric energy meter of claim 1, wherein, The upper cover is provided with a first counterbore, the third fixing hole is arranged at the bottom of the first counterbore, and a lead seal is arranged in the first counterbore; And / or, the upper cover is further provided with a second counterbore, the fourth fixing hole is arranged at the bottom of the second counterbore, and a lead seal is arranged in the second counterbore.

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