Electric energy metering box

Abstract

The embodiment of the utility model provides an electric energy metering box which comprises a bottom shell structure and an upper cover structure which are detachably connected, a containing cavity is formed in the bottom shell structure and the upper cover structure after the bottom shell structure and the upper cover structure are connected, and the bottom shell structure comprises a first side and a second side which are oppositely arranged in a first direction; the self-locking assembly comprises a first self-locking structure arranged on the first side and a second self-locking structure arranged on the second side, and the shape of the end, away from the first side, of the first self-locking structure is matched with the shape of the end, away from the second side, of the second self-locking structure; a mounting opening is formed in one side, facing the upper cover structure, of the bottom shell structure; wherein one of the two adjacent bottom shell structures in the first direction is detachably connected with the other bottom shell structure through the self-locking assembly. According to the technical scheme of the utility model, through the cooperation of the self-locking assemblies, a plurality of metering boxes can be combined at will in the first direction, thereby meeting the requirements of electric energy meter expansion in different scenes.

Description

Technical Field

[0001] This utility model relates to the field of electricity meter box technology, and more specifically, to an electricity metering box. Background Technology

[0002] Currently, existing single-phase multi-meter metering boxes typically use a fixed mold design, with each meter position having a fixed size, which cannot be flexibly expanded. This makes it difficult to meet the installation needs of multiple users and multiple meter positions in environments with concentrated users and limited space. In related technologies, the number of meter positions in metering boxes is fixed, for example, metering boxes are available with 1, 2, 4, 6, 9, 12, and 15 meter positions, which has poor versatility. Some areas only need 3 households, so a 4-meter metering box must be used, while some areas only have 7 households, so a 9-meter metering box is needed, resulting in waste. Utility Model Content

[0003] The present invention aims to at least solve the technical problem that the existing technology or related technology cannot meet the needs of flexible installation of power metering boxes.

[0004] In view of this, an embodiment of the first aspect of the present invention provides an electricity metering box.

[0005] To achieve the above objectives, embodiments of this utility model provide an energy metering box, comprising: a detachably connected bottom shell structure and a top cover structure, wherein the bottom shell structure and the top cover structure form an internal receiving cavity after connection; the bottom shell structure includes a first side and a second side disposed opposite to each other in a first direction; a self-locking assembly, including a first self-locking structure disposed on the first side and a second self-locking structure disposed on the second side, wherein the shape of the end of the first self-locking structure away from the first side is adapted to the shape of the end of the second self-locking structure away from the second side; the bottom shell structure has a mounting opening on the side facing the top cover structure, the edge of the mounting opening has an outwardly extending mounting edge, the self-locking assembly is disposed on the side of the mounting edge away from the mounting opening, and on the plane where the mounting opening is located, the projection of the mounting edge covers at least part of the projection of the self-locking assembly; wherein, one of two adjacent bottom shell structures in the first direction is detachably connected to the other through the self-locking assembly.

[0006] The electricity metering box proposed by this utility model includes a bottom shell structure, a top cover structure, and a self-locking assembly. The self-locking assembly includes a first self-locking structure and a second self-locking structure respectively disposed on both sides of the bottom shell structure in a first direction. By utilizing the cooperation of the self-locking assembly, multiple metering boxes can be arbitrarily combined in the first direction to meet the expansion needs of different scenarios.

[0007] Specifically, the bottom shell structure serves as the basic framework for a single metering box, providing internal space and a mounting base. The first and second sides of the bottom shell structure are positioned opposite each other along a first direction, facilitating the splicing of multiple units. The first direction can be either the left-right or the up-down direction of the bottom shell structure.

[0008] The first self-locking structure is located on the first side of each base shell structure, and is used to cooperate with the second self-locking structure of the adjacent base shell to achieve splicing. This mechanical locking method ensures a stable connection between each unit and facilitates easy disassembly. The second self-locking structure is located on the second side of each base shell, and cooperates with the first self-locking structure of the adjacent base shell. Through shape matching, it achieves locking, ensuring tightness of the splicing, supporting the continuous splicing of multiple metering boxes, and maintaining overall flatness. With the action of the first and second self-locking structures, multiple units can be freely spliced ​​along the first direction. After splicing, the overall structure is stable, the connection is quick, no additional fasteners are required, and it is convenient for on-site operation. With the help of the self-locking components, multiple units can be flexibly combined to meet the needs of different user numbers.

[0009] In addition, the bottom shell structure has a mounting port on the side facing the top cover structure. This mounting port can serve as an entry point for assembling metering components, facilitating the installation and maintenance of internal components, thereby improving assembly efficiency and simplifying subsequent maintenance and repair. The edge of the mounting port has an outwardly extending mounting edge, which can serve as a mechanical support surface for the connection, providing positioning and support for the self-locking components, thus making the connection more stable and reducing deviation.

[0010] It is important to emphasize that by limiting the projection of the assembly edge to cover at least part of the self-locking component, and by setting the assembly edge and the self-locking component in a staggered manner on the side wall of the bottom shell structure, specifically, the self-locking component is located on the side of the assembly edge away from the mounting opening. During assembly, when the first self-locking structure of one of the two bottom shell structures engages with the second self-locking structure of the other, it is inserted from back to front. At this time, the self-locking component can be limited by the assembly edge to ensure that the self-locking structure does not protrude excessively during connection, reducing the possibility of detachment.

[0011] In some technical solutions, optionally, the bottom shell structure includes: a bottom shell body, with an installation opening on the side of the bottom shell body facing the upper cover structure; wherein, in the first direction, the first self-locking structure and / or the second self-locking structure protrudes beyond the maximum dimension of the bottom shell body, which is greater than the minimum dimension of the mounting edge protruding beyond the bottom shell body.

[0012] In this technical solution, the bottom shell structure includes a bottom shell body, which is composed of the bottom shell body, and has an installation opening on the side facing the top cover. In a first direction, the self-locking structure protrudes beyond the maximum dimension of the bottom shell body, ensuring that its mechanical action during assembly takes precedence over the assembly edge. The protruding part of the self-locking structure preferentially contacts or locks, ensuring the stability and accuracy of the assembly. Furthermore, the protruding part of the self-locking structure is larger than the projection of the assembly edge, ensuring that the self-locking structure achieves positioning and fixation first during assembly.

[0013] In some technical solutions, optionally, the first self-locking structure includes: a first base, disposed on the wall surface of a first side of the bottom shell body; a locking protrusion, one end of the locking protrusion in a first direction is connected to the first base, and the other end of the locking protrusion in the first direction extends out of the bottom shell structure.

[0014] In this technical solution, the first self-locking structure includes a first base and a snap-fit ​​protrusion. The first base is located on the first side wall of the bottom shell body, while the snap-fit ​​protrusion is connected to one end of the first base, protruding from the bottom shell structure to form a self-locking connection, which ensures that the splicing between the bottom shell structures is stable and the disassembly is convenient.

[0015] In some technical solutions, optionally, the snap-fit ​​protrusion includes: a first snap-fit ​​portion and a second snap-fit ​​portion connected together, the first snap-fit ​​portion being connected to a first base, and the projection of the first snap-fit ​​portion protruding beyond the projection of the assembly edge on the plane where the mounting opening is located; wherein, in the length direction of the bottom shell structure, the maximum projection size of the first snap-fit ​​portion on the plane where the mounting opening is located is not greater than the minimum projection size of the second snap-fit ​​portion on the plane where the mounting opening is located.

[0016] In this technical solution, the snap-fit ​​protrusion consists of two snap-fit ​​parts: a first snap-fit ​​part and a second snap-fit ​​part. The first snap-fit ​​part is directly connected to the first base. By restricting the projection of the first snap-fit ​​part on the plane where the mounting opening is located, it must protrude beyond the projection of the assembly edge. That is, the first snap-fit ​​part needs to have a portion protruding beyond the assembly edge on this plane so that the subsequent second snap-fit ​​part can preferentially contact the corresponding structure of the adjacent bottom shell structure during splicing. It should be emphasized that the maximum projected size of the first snap-fit ​​part in the length direction is not greater than the minimum projected size of the second snap-fit ​​part. This indicates that the size of the first snap-fit ​​part is relatively small, while the second snap-fit ​​part is wider, which plays a mechanical locking role, providing a mechanical locking function to ensure a stable connection between the two bottom shell structures, and also preventing it from falling off after insertion, thus ensuring the firmness of the splicing.

[0017] In some technical solutions, the first snap-fit ​​portion and the second snap-fit ​​portion can optionally form a T-shaped structure.

[0018] In this technical solution, the T-shaped structure refers to the first snap-fit ​​part and the second snap-fit ​​part being perpendicular to each other or arranged in a "T" shape. For example, the first snap-fit ​​part serves as a horizontal arm of the "T" and the second snap-fit ​​part serves as a vertical arm of the "T", or vice versa. These two parts are connected to form a "T"-shaped protrusion structure with mechanical snap-fit ​​function.

[0019] In some technical solutions, optionally, the second self-locking structure includes: a second base, disposed on the wall surface of the second side of the bottom shell structure; a locking groove, one end of the locking groove in the first direction is connected to the second base, and the other end of the locking groove in the first direction extends out of the bottom shell structure.

[0020] In this technical solution, the second self-locking structure includes a second base and a snap-fit ​​groove. The second base is located on the second side of the bottom shell structure, specifically on the wall surface of the second side. The snap-fit ​​groove is connected to one end of the second base and extends out of the bottom shell structure in the first direction. The snap-fit ​​groove corresponds to the snap-fit ​​protrusion of the first self-locking structure, realizing a reliable splicing between the bottom shell structures of the two metering boxes.

[0021] In some technical solutions, the snap-fit ​​groove optionally includes: a first groove and a second groove connected together, the first groove being connected to the second base, and the projection of the first groove protruding beyond the projection of the assembly edge on the plane where the mounting opening is located; wherein, in the length direction of the bottom shell structure, the minimum projection size of the groove opening of the first groove on the plane where the mounting opening is located is not greater than the maximum projection size of the groove opening of the second groove on the plane where the mounting opening is located.

[0022] In this technical solution, the snap-fit ​​groove comprises a first groove and a second groove, with the first groove connected to the second base and located on the second side wall of the bottom shell structure. On the plane of the mounting opening, the projection of the first groove protrudes beyond the projection of the mounting edge. Along the length of the bottom shell structure, the minimum projected size of the opening of the first groove on the mounting opening plane is not greater than the maximum projected size of the opening of the second groove on the same plane. The first groove serves as a guide and positioning groove, ensuring the correct position of the snap-fit ​​groove.

[0023] In some technical solutions, the upper cover structure is optionally connected to the bottom shell structure, and the projection of the self-locking component protrudes beyond the projection of the upper cover structure on the plane where the mounting port is located.

[0024] The upper cover structure covers the lower shell structure, and the two are connected to form a complete metering box. The plane where the mounting port is located refers to the opening plane of the lower shell structure facing the upper cover structure. By restricting the projection of the self-locking component on this projection plane from protruding beyond the projection of the upper cover structure, that is, the projection size of the first self-locking structure and the second self-locking structure on the plane where the mounting port is located is larger than the projection size of the upper cover structure on the same plane, the self-locking component protrudes beyond the upper cover structure on this plane, and part of the self-locking component extends beyond the boundary of the upper cover structure.

[0025] In some technical solutions, optionally, it also includes: a telescopic structure, movably disposed on the bottom shell structure, and a self-locking component disposed on the telescopic structure; wherein, when the telescopic structure is in the extended state, the self-locking component protrudes from the mounting edge on the first side; when the telescopic structure is in the retracted state, the projection of the mounting edge on the plane where the mounting opening is located covers the projection of the self-locking component on the plane where the mounting opening is located.

[0026] By incorporating a telescopic structure, the structure can switch between an extended and retracted state, and a self-locking component is mounted on this structure. In the extended state, the telescopic structure protrudes beyond the bottom shell structure, allowing the self-locking component to protrude from the mounting edge on the first side, facilitating splicing and connection. In the retracted state, the telescopic structure retracts, and the projection of the mounting edge onto the plane of the mounting opening covers the projection of the self-locking component.

[0027] In some technical solutions, the bottom shell structure and the self-locking assembly are optionally integrally molded.

[0028] By restricting the bottom shell structure and the self-locking component to be molded as a single piece, the self-locking component is not attached to the bottom shell as an independent part, but is directly molded onto the bottom shell body during the bottom shell structure manufacturing process through mold design or processing technology.

[0029] Additional aspects and advantages of this invention will become apparent in the description that follows, or may be learned by practice of this invention. Attached Figure Description

[0030] Figure 1 A schematic diagram of the structure of an energy metering box according to an embodiment of the present invention is shown;

[0031] Figure 2 A schematic diagram of the structure of an energy metering box according to an embodiment of the present invention is shown;

[0032] Figure 3 A schematic diagram of the structure of an energy metering box according to an embodiment of the present invention is shown;

[0033] Figure 4 A schematic diagram of the structure of an energy metering box according to an embodiment of the present invention is shown;

[0034] Figure 5 A schematic diagram of a structure showing three energy metering boxes spliced ​​together along a first direction according to an embodiment of the present invention is shown.

[0035] Figure 6 A schematic diagram of a structure showing three energy metering boxes spliced ​​together along a first direction according to an embodiment of the present invention is shown.

[0036] Figure 7 A schematic diagram of the structure of an energy metering box according to an embodiment of the present invention is shown.

[0037] in, Figures 1 to 7 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0038] 100: Electricity metering box; 102: Bottom shell structure; 1022: First side; 1024: Second side; 1032: Bottom shell body; 1034: Mounting port; 1036: Assembly edge; 104: Top cover structure; 106: Receiving cavity; 108: Telescopic structure;

[0039] 110: Self-locking component; 112: First self-locking structure; 1122: First base; 1124: Snap-fit ​​protrusion; 1126: First snap-fit ​​portion; 1128: Second snap-fit ​​portion; 122: Second self-locking structure; 1222: Second base; 1224: Snap-fit ​​groove; 1226: First groove; 1228: Second groove. Detailed Implementation

[0040] To better understand the above-mentioned objectives, features, and advantages of the embodiments of this utility model, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0041] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, embodiments of the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0042] The following reference Figures 1 to 7 Some embodiments of the present invention are described below.

[0043] like Figure 1 , Figure 3 and Figure 6 As shown, this embodiment provides an electricity metering box 100, including a bottom shell structure 102, a top cover structure 104, and a self-locking assembly 110. The self-locking assembly 110 includes a first self-locking structure 112 and a second self-locking structure 122 respectively disposed on both sides of the bottom shell structure 102 in a first direction. By utilizing the cooperation of the self-locking assembly 110, it can be locked in place as follows: Figure 5 Multiple metering boxes can be combined arbitrarily in the first direction shown to meet the expansion needs of different scenarios.

[0044] Specifically, the bottom shell structure 102 serves as the basic frame of a single metering box, providing internal space and a mounting base. The first side 1022 and the second side 1024 of the bottom shell structure 102 are arranged opposite each other along a first direction, facilitating the splicing of multiple units. After the bottom shell structure 102 and the top cover structure 104 are connected, a receiving cavity 106 for installing various components is formed inside.

[0045] The first direction can be either the left-right direction of the bottom shell structure 102 or the up-down direction of the bottom shell structure 102.

[0046] like Figure 1 and Figure 2 As shown, the first self-locking structure 112 is located on the first side 1022 of each bottom shell structure 102, and is used to cooperate with the second self-locking structure 122 of the adjacent bottom shell to achieve splicing. This mechanical locking method ensures a stable connection between each unit and facilitates easy disassembly. The second self-locking structure 122 is located on the second side 1024 of each bottom shell, and cooperates with the first self-locking structure 112 of the adjacent bottom shell. Through shape matching, it achieves locking, ensuring tightness of the splicing, supporting the continuous splicing of multiple metering boxes, and maintaining overall flatness. Under the action of the first self-locking structure 112 and the second self-locking structure 122, multiple units can be freely spliced ​​along the first direction. After splicing, the overall structure is stable, the connection is quick, no additional fasteners are required, and it is convenient for on-site operation. Under the action of the self-locking component 110, multiple units can be flexibly combined to meet the needs of different user numbers.

[0047] In addition, the bottom shell structure 102 has a mounting port 1034 on the side facing the upper cover structure 104. The mounting port 1034 can serve as an entry point for assembling metering components, facilitating the installation and maintenance of internal components, thereby improving assembly efficiency and facilitating subsequent maintenance and repair. The edge of the mounting port 1034 has an outwardly extending assembly edge 1036, which can serve as a mechanical support surface for connection, providing positioning and support for the self-locking assembly 110, thereby making the connection more stable and reducing deviation.

[0048] It should be emphasized that by limiting the projection of the mounting edge 1036 to cover at least part of the self-locking component 110, and by setting the mounting edge 1036 and the self-locking component 110 in a staggered manner on the side wall of the bottom shell structure 102, specifically, the self-locking component 110 is located on the side of the mounting edge 1036 away from the mounting port 1034. During assembly, when the first self-locking structure 112 of one of the two bottom shell structures 102 engages with the second self-locking structure 122 of the other, it is inserted from back to front. At this time, the self-locking component 110 can be limited by the mounting edge 1036 to ensure that the self-locking structure does not protrude excessively during connection, reducing the possibility of detachment.

[0049] Furthermore, the first self-locking structure 112 of each metering box cooperates with the second self-locking structure 122 of the adjacent metering box to form a locking relationship. They are arranged along the first direction. The first self-locking structure 112 is located on the first side 1022 of each box, and the second self-locking structure 122 is located on the second side 1024 of the adjacent box. After the first self-locking structure 112 and the second self-locking structure 122 are spliced ​​together, they form a continuous whole, and the connection is more stable, avoiding loosening or misalignment at the splice.

[0050] It should be emphasized that the shape of the first self-locking structure 112 matches the shape of the second self-locking structure 122, such as the slot and the boss, the latch and the hole, etc. By interlocking or inserting with each other, the connection is ensured to be tight. On the one hand, it maintains the stability of the splicing and reduces spatial errors, and on the other hand, it facilitates quick assembly and disassembly.

[0051] In some embodiments, optionally, such as Figure 2 As shown, the bottom shell structure 102 includes a bottom shell body 1032, which is composed of the bottom shell body 1032, and has a mounting opening 1034 on the side facing the top cover. Furthermore, in the first direction, the maximum dimension of the bottom shell body 1032 (including the protruding portion of the self-locking assembly 110) is greater than the protruding dimension of the mounting edge 1036 (i.e., the maximum projection of the mounting edge 1036), and the protruding portion of the self-locking assembly 110 (first self-locking structure 112 and / or second self-locking structure 122) in this direction is also greater than the protruding portion of the mounting edge 1036, ensuring that the self-locking structure has preferential mechanical action during assembly and is easy to assemble and disassemble.

[0052] In the first direction, the self-locking structure protrudes beyond the maximum dimension of the bottom shell body 1032, ensuring that its mechanical action during splicing takes precedence over the assembly edge 1036. The protruding part of the self-locking structure preferentially contacts or locks, ensuring the stability of the splicing and the accuracy of its position. In addition, the protruding part of the self-locking structure is larger than the projection of the assembly edge 1036, ensuring that the self-locking structure achieves positioning and fixation first during splicing.

[0053] The assembly edge 1036 extends outward along the edge of the bottom shell, serving as a mechanical support and sealing edge for the splicing. In addition, the assembly edge 1036 can also provide auxiliary positioning to ensure the flatness and sealing performance of the splicing.

[0054] The protruding portions of the first self-locking structure 112 and / or the second self-locking structure 122 can be mechanically locked first during splicing to ensure the relative position of the two bottom shells is stable. Since they protrude from the maximum size of the bottom shell, they will first contact the corresponding self-locking structure of the adjacent bottom shell.

[0055] In some embodiments, optionally, such as Figure 4 As shown, the first self-locking structure 112 includes a first base 1122 and a snap-fit ​​protrusion 1124. The first base 1122 is disposed on the first side 1022 wall of the bottom shell body 1032, and the snap-fit ​​protrusion 1124 is connected to one end of the first base 1122, protruding from the bottom shell structure 102 to form a self-locking connection, which ensures that the splicing between the bottom shell structure 102 and the bottom shell structure 1032 is stable and the disassembly is convenient.

[0056] The first base 1122, serving as the basic support for the self-locking structure, is fixed to the first side 1022 wall of the bottom shell body 1032, providing stable support and a positioning platform to ensure precise positioning of the self-locking structure during assembly, facilitating its engagement with the corresponding second self-locking structure 122. A locking protrusion 1124 is located at one end of the first base 1122, extending out of the bottom shell structure 102, and is used to engage with the second self-locking structure 122 of the adjacent bottom shell to achieve mechanical locking. In summary, the shape and position of the protrusion achieve the "insertion-locking" action, ensuring the stability of the assembly.

[0057] The snap-fit ​​protrusion 1124 is placed on the edge of the bottom shell body 1032 and extends along the first direction, which facilitates the splicing of multiple units along this direction and ensures that multiple bottom shells are tightly connected along the first direction to form a continuous splicing surface.

[0058] The snap-fit ​​protrusion 1124 is inserted into the corresponding second self-locking structure 122 of the adjacent bottom shell structure 102 to achieve mechanical locking. After splicing, the two bottom shell structures 102 can form a stable connection through the cooperation of "protrusion-groove" or "protrusion-slot" to prevent displacement.

[0059] In some embodiments, optionally, such as Figure 4 As shown, the snap-fit ​​protrusion 1124 consists of two first snap-fit ​​portions 1126 and a second snap-fit ​​portion 1128. The first snap-fit ​​portion 1126 is directly connected to the first base 1122. By restricting the projection of the first snap-fit ​​portion 1126 on the plane where the mounting opening 1034 is located, it must protrude beyond the projection of the mounting edge 1036. That is, the first snap-fit ​​portion 1126 needs to have a portion protruding beyond the mounting edge 1036 on this plane, so that the subsequent second snap-fit ​​portion 1128 can preferentially contact the corresponding structure of the adjacent bottom shell structure 102 during splicing. It should be emphasized that the maximum projected size of the first snap-fit ​​portion 1126 in the length direction is not greater than the minimum projected size of the second snap-fit ​​portion 1128. This indicates that the size of the first snap-fit ​​portion 1126 is relatively small, while the second snap-fit ​​portion 1128 is wider, which plays a mechanical locking role, providing a mechanical locking function to ensure a stable connection between the two bottom shell structures 102, and also to prevent it from falling off after insertion, ensuring the firmness of the splicing.

[0060] Along the length of the bottom shell structure 102, the maximum projected size of the first snap-fit ​​part 1126 is not greater than the minimum projected size of the second snap-fit ​​part 1128. This design ensures that the size of the first snap-fit ​​part 1126 is small and the size of the second snap-fit ​​part 1128 is large. The size of the first snap-fit ​​part 1126 ensures smooth guidance during insertion and reduces jamming. The larger size of the second snap-fit ​​part 1128 forms a mechanical lock to prevent loosening or falling off after splicing.

[0061] Meanwhile, the first snap-fit ​​portion 1126 contacts the assembly edge 1036 before it, reducing the risk of stress and damage to the assembly edge 1036. The incremental size design ensures the reliability and durability of the splicing connection.

[0062] In summary, this design employs a two-section structure through the limiting snap-fit ​​protrusion 1124, namely the combination of the first snap-fit ​​part 1126 and the second snap-fit ​​part 1128. Through clever arrangement of dimensions and positions, it achieves a functional division of "guiding and locking," ensuring smooth and stable splicing between the bottom shells of the metering box. Simultaneously, the protruding first snap-fit ​​part 1126 protects the assembly edge 1036, extending its service life. This design balances mechanical performance and ease of assembly.

[0063] In some embodiments, optionally, the T-shaped structure refers to the first latching portion 1126 and the second latching portion 1128 being perpendicular to each other or arranged in a "T" shape. For example, the first latching portion 1126 is a horizontal arm of the "T", and the second latching portion 1128 is a vertical arm of the "T", or conversely, the two parts are connected to form a "T"-shaped protrusion structure with mechanical latching function.

[0064] The T-shaped structure allows the bottom shells of two adjacent metering boxes to be securely joined and locked together through the "T"-shaped protrusion and corresponding groove or slot. The first horizontal locking part 1126 is inserted into the matching slot of the adjacent bottom shell to ensure horizontal alignment and fixation. The second vertical locking part 1128 locks onto the inner wall or edge of the adjacent bottom shell to prevent the splice from sliding or falling off in the vertical direction. The whole structure forms a stable three-dimensional lock with strong resistance to vibration and impact.

[0065] The first locking portion 1126, acting as a lateral protruding arm, is located on the plane of the mounting port 1034 and protrudes beyond the mounting edge 1036. The second locking portion 1128, perpendicular to the first locking portion 1126, is larger in size and forms a locking arm to ensure a secure connection.

[0066] Multiple metering boxes are sequentially spliced ​​together using a T-shaped structure along the first direction to form a stable free combination. After splicing, the overall structure is stable, the position is accurate, and it is easy to disassemble.

[0067] Understandably, the T-shaped structure provides multi-directional locking, significantly improving splicing strength and resistance to external forces.

[0068] In some embodiments, optionally, such as Figure 4As shown, the second self-locking structure 122 includes a second base 1222 and a snap-fit ​​groove 1224. The second base 1222 is located on the second side 1024 of the bottom shell structure 102, specifically on the wall surface of the second side 1024. The snap-fit ​​groove 1224 is connected to one end of the second base 1222 and extends out of the bottom shell structure 102 in the first direction. The snap-fit ​​groove 1224 corresponds to the snap-fit ​​protrusion 1124 of the first self-locking structure 112, realizing a reliable connection between the bottom shell structures 102 of the two metering boxes.

[0069] Specifically, the second base 1222, as the foundation of the second self-locking structure 122, is fixed to the second side 1024 wall of the bottom shell structure 102, providing installation and support for the snap-fit ​​groove 1224, ensuring accurate and stable positioning of the snap-fit ​​groove 1224, and guaranteeing smooth engagement with the first self-locking structure 112. The snap-fit ​​groove 1224 is connected to one end of the second base 1222 and extends out of the bottom shell structure 102 in the first direction, forming a "groove portion" for receiving the snap-fit ​​protrusion 1124 of the first self-locking structure 112. The snap-fit ​​groove 1224 of the second self-locking structure 122 can mechanically engage with the snap-fit ​​protrusion 1124 of the first self-locking structure 112, achieving a splicing connection.

[0070] The second base 1222 is located on the wall of the second side 1024 of the bottom shell. The snap-fit ​​groove 1224 extends along the first direction to ensure accurate correspondence with the snap-fit ​​protrusion 1124 of the first self-locking structure 112 of the adjacent metering box. The size and depth of the groove are designed according to the size of the protrusion of the first self-locking structure 112 to ensure a tight fit.

[0071] In some embodiments, optionally, the snap-fit ​​groove 1224 comprises a first groove portion 1226 and a second groove portion 1228, wherein the first groove portion 1226 is connected to the second base 1222 and is disposed on the wall surface of the second side 1024 of the bottom shell structure 102. On the plane where the mounting opening 1034 is located, the projection of the first groove portion 1226 protrudes beyond the projection of the mounting edge 1036. Figure 5 Along the length direction shown, the minimum projected size of the opening of the first groove 1226 on the mounting port 1034 plane is no greater than the maximum projected size of the opening of the second groove 1228 on the same plane. The first groove 1226 serves as a guide and positioning groove to ensure the correct position of the locking recess 1224. Furthermore, when the first self-locking structure 112 is T-shaped, the first groove 1226 provides an entrance that mates with the T-shaped protrusion of the first self-locking structure 112. The second groove 1228 mates with the first groove 1226 to form a complete locking recess 1224, with its opening size in the length direction being larger than that of the first groove 1226, ensuring that the first groove 1226 can be smoothly inserted and locked.

[0072] By ensuring that the maximum projected size of the slot on the mounting port 1034 plane is greater than the minimum projected size of the slot of the first slot 1226, sufficient space can be provided to accommodate the first slot 1226, ensuring a tight fit during splicing.

[0073] The protrusion and groove size design of the first groove 1226 ensures guidance during splicing and avoids misalignment. The groove size of the second groove 1228 is larger than that of the first groove 1226, ensuring sufficient space for tight locking after insertion.

[0074] In some embodiments, the upper cover structure 104 may optionally cover the lower shell structure 102, and the two are connected to form a complete metering box. The plane where the mounting port 1034 is located refers to the opening plane of the lower shell structure 102 facing the upper cover structure 104. By limiting the projection of the self-locking component 110 on this projection plane to protrude beyond the projection of the upper cover structure 104, that is, the projection size of the first self-locking structure 112 and the second self-locking structure 122 on the plane where the mounting port 1034 is located is greater than the projection size of the upper cover structure 104 on the same plane, the self-locking component 110 protrudes beyond the upper cover structure 104 on this plane, and a part of the structure of the self-locking component 110 extends beyond the boundary range of the upper cover structure 104.

[0075] By limiting the self-locking component 110 to protrude beyond the projection of the upper cover structure 104, it is ensured that when multiple metering boxes are spliced, the self-locking structure contacts and locks the adjacent boxes before the upper cover part. This design avoids interference of the upper cover structure 104 with the splicing and ensures that the mechanical locking function of the self-locking structure is fully utilized.

[0076] In addition, the protruding self-locking component can serve as a handle or latch for easy disassembly. Because the self-locking component 110 protrudes, the cover structure 104 will not directly bear the mechanical stress during splicing, thus preventing deformation or damage to the cover.

[0077] In general, the projection of the self-locking component 110 on the plane where the mounting port 1034 is located protrudes from the projection of the upper cover structure 104 in order to ensure the priority and firmness of the splicing connection, while facilitating disassembly and assembly operations and protecting the upper cover structure 104 from mechanical stress.

[0078] Furthermore, such as Figure 7 As shown, a telescopic structure 108 is provided, which can switch between an extended state and a retracted state, and a self-locking component 110 is provided on the telescopic structure 108. In the extended state, the telescopic structure 108 protrudes beyond the bottom shell structure 102, allowing the self-locking component 110 to protrude from the mounting edge 1036 on the first side 1022, facilitating splicing and connection. In the retracted state, the telescopic structure 108 is retracted, and the projection of the mounting edge 1036 on the plane where the mounting opening 1034 is located covers the projection of the self-locking component 110.

[0079] By mounting the self-locking component 110 on the telescopic structure 108, the self-locking component 110 protrudes when extended, facilitating quick splicing and locking. When retracted, the self-locking component 110 is hidden or covered, avoiding affecting the overall appearance and sealing performance.

[0080] After the telescopic structure 108 is retracted, the mounting edge 1036 covers the projection of the self-locking component 110 on the plane, which helps to seal and prevent dust, and improves the overall protection level.

[0081] The telescopic design supports dynamic adjustment, which can facilitate splicing and maintain a compact and aesthetically pleasing state when not spliced. It allows switching between states during different construction stages or maintenance processes, providing greater operational flexibility.

[0082] Furthermore, the bottom shell structure 102 and the self-locking component 110 are integrally formed. The self-locking component 110 is not attached to the bottom shell as an independent part, but is directly formed onto the bottom shell body 1032 during the manufacturing process of the bottom shell structure 102 through mold design or processing technology.

[0083] Specifically, the bottom shell structure 102 and the self-locking assembly 110 are manufactured simultaneously through injection molding, die casting, extrusion, or other molding processes to form a single unit. The self-locking structures, such as the snap-fit ​​protrusion 1124 of the first self-locking structure 112 and the snap-fit ​​groove 1224 of the second self-locking structure 122, are directly formed as protruding or recessed portions of the bottom shell body 1032. This one-piece molding avoids the secondary fixing methods of traditional screws and adhesives, eliminates the risk of loosening of connecting parts, strengthens the overall structure, and improves mechanical strength and durability.

[0084] As an integral part of the base shell structure 102, the self-locking component 110 ensures positioning and locking accuracy during assembly, avoiding assembly errors and the risk of parts falling off, thus improving product stability. Furthermore, due to its integrated structure, there is no need to worry about the self-locking component 110 becoming loose or lost.

[0085] In related technologies, existing metering boxes are numerous and not universally compatible. Especially in areas with concentrated users and limited installation space, multiple meter positions cannot be installed. Each meter position has an independent size and mold, and the lack of universality of meter boxes leads to a significant increase in equipment and production costs.

[0086] In one specific embodiment, a freely combinable metering box device is provided, employing a T-shaped self-locking structure. When multiple meter boxes need to be installed, they are inserted into the T-slot on the right side to form a single unit, resulting in a neat and aesthetically pleasing appearance and facilitating subsequent operation and maintenance. It is particularly suitable for flexible combination in confined spaces.

[0087] It mainly consists of three parts. The T-shaped protrusion of the second meter box (i.e., the first self-locking structure 112) is installed into the T-shaped groove of the first meter box (i.e., the second self-locking structure 122). The second meter box is then pushed all the way down, pressing against the top cover. Because the bottom shell (i.e., the bottom shell structure 102) is installed on the wall, close to the wall, no additional upper and lower limits are needed. Similarly, for each additional unit, another one is installed in the T-shaped groove on the side. There is enough space, and it can be added continuously.

[0088] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0089] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit 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 utility model.

[0090] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0091] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An electricity metering box, characterized in that, include: A detachable bottom shell structure and a top cover structure, wherein the bottom shell structure and the top cover structure form an internal receiving cavity after being connected, and the bottom shell structure includes a first side and a second side disposed opposite to each other in a first direction; The self-locking assembly includes a first self-locking structure disposed on the first side and a second self-locking structure disposed on the second side, wherein the shape of the end of the first self-locking structure away from the first side is adapted to the shape of the end of the second self-locking structure away from the second side; The bottom shell structure has a mounting opening on the side facing the top cover structure. The edge of the mounting opening has an outwardly extending mounting edge. The self-locking component is located on the side of the mounting edge away from the mounting opening. On the plane where the mounting opening is located, the projection of the mounting edge covers at least part of the projection of the self-locking component. In this configuration, one of the two adjacent bottom shell structures in the first direction is detachably connected to the other via the self-locking assembly.

2. The electricity metering box according to claim 1, characterized in that, The bottom shell structure includes: The bottom shell body has the mounting port on the side facing the upper cover structure; In the first direction, the first self-locking structure and / or the second self-locking structure protrude beyond the maximum dimension of the bottom shell body, which is greater than the minimum dimension of the assembly edge protruding beyond the bottom shell body.

3. The electricity metering box according to claim 2, characterized in that, The first self-locking structure includes: The first base is disposed on the wall surface of the first side of the bottom shell body; A snap-fit ​​protrusion is provided, with one end of the snap-fit ​​protrusion connected to the first base in the first direction and the other end of the snap-fit ​​protrusion extending out of the bottom shell structure in the first direction.

4. The electricity metering box according to claim 3, characterized in that, The snap-fit ​​protrusion includes: A first snap-fit ​​part and a second snap-fit ​​part are connected. The first snap-fit ​​part is connected to the first base. On the plane where the mounting port is located, the projection of the first snap-fit ​​part protrudes beyond the projection of the assembly edge. Wherein, in the length direction of the bottom shell structure, the maximum projected size of the first snap-fit ​​part on the plane where the mounting port is located is not greater than the minimum projected size of the second snap-fit ​​part on the plane where the mounting port is located.

5. The electricity metering box according to claim 4, characterized in that, The first snap-fit ​​portion and the second snap-fit ​​portion form a T-shaped structure.

6. The electricity metering box according to claim 3, characterized in that, The second self-locking structure includes: The second base is disposed on the wall surface of the second side of the bottom shell structure; A snap-fit ​​groove is provided, with one end of the snap-fit ​​groove connected to the second base in the first direction and the other end of the snap-fit ​​groove extending out of the bottom shell structure in the first direction.

7. The electricity metering box according to claim 6, characterized in that, The snap-fit ​​groove includes: A first groove and a second groove are connected, the first groove is connected to the second base, and on the plane where the mounting opening is located, the projection of the first groove protrudes beyond the projection of the mounting edge; Wherein, in the length direction of the bottom shell structure, the minimum projected size of the slot of the first groove on the plane where the mounting port is located is not greater than the maximum projected size of the slot of the second groove on the plane where the mounting port is located.

8. The electricity metering box according to claim 2, characterized in that, The upper cover structure is connected to the lower shell structure, and on the plane where the mounting port is located, the projection of the self-locking component protrudes beyond the projection of the upper cover structure.

9. The electricity metering box according to any one of claims 1 to 8, characterized in that, Also includes: A telescopic structure is movably mounted on the bottom shell structure, and the self-locking component is mounted on the telescopic structure; In the telescopic structure, when it is extended, the self-locking component protrudes from the mounting edge on the first side; when it is retracted, the projection of the mounting edge onto the plane where the mounting opening is located covers the projection of the self-locking component onto the plane where the mounting opening is located.

10. The electricity metering box according to any one of claims 1 to 8, characterized in that, The bottom shell structure and the self-locking component are integrally formed.

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