Box assembly and modular metering box

Abstract

The present invention provides a box assembly and a modular metering box, wherein the box assembly comprises a box body, a mounting plate and a limiting device, wherein the mounting plate is arranged inside the box body, and the mounting plate is suitable for sliding to a position for engaging with the box body; the limiting device is arranged between the box body and the mounting plate, and the limiting device is used to limit the displacement of the mounting plate relative to the box body. The box assembly of the present invention can realize quick disassembly and quick removal, thereby improving the loading and unloading efficiency of the modular metering box.

Description

Technical Field

[0001] The present invention relates to the technical field of electricity metering devices, and in particular to a box assembly and a modular metering box. Background Art

[0002] At present, the meter box is a combination of metering instruments and auxiliary equipment necessary for measuring electric energy. The meter box is developing in a modular direction, and is gradually forming a new standard for the entire industry. In the existing modular meter box, main switches, user switches, smart electricity meters and other components are installed in the box body. With the continuous development of the industry, in order to facilitate installation, the above components are first integrated into a metering assembly structure through a mounting plate, and then the metering assembly structure is fixed to the box body. However, most of the existing mounting plates are connected to the box body through a large number of fasteners such as screws or bolts, and the loading and unloading efficiency is low, which wastes a lot of time, is not conducive to installation, and is not conducive to maintenance and replacement. Summary of the invention

[0003] The problem solved by the invention is how to improve the loading and unloading efficiency of the mounting plate and the box body.

[0004] In order to solve the above problems, the present invention provides a box assembly, comprising:

[0005] Box body;

[0006] A mounting plate, which is arranged inside the box body, and the mounting plate is suitable for sliding to a position for engaging with the box body;

[0007] A limiting device is arranged between the box body and the mounting plate, and the limiting device is used to limit the displacement of the mounting plate relative to the box body.

[0008] Optionally, the box assembly also includes a guide member, which is arranged inside the box body, and the mounting plate is provided with a penetrating channel along the thickness direction, the guide member is suitable for passing through the channel, and the size of the channel in the sliding direction of the mounting plate relative to the box body is larger than the size of the guide member.

[0009] Optionally, the box assembly further includes a blocking member, wherein the blocking member is disposed inside the box body, the blocking member is located on a side of the mounting plate facing an opening of the box body, and the blocking member is suitable for contacting the mounting plate.

[0010] Optionally, a clamping assembly is further included, wherein the clamping assembly is disposed between the box body and the mounting plate, and the box body and the mounting plate are clamped together by the clamping assembly.

[0011] Optionally, the box body and the mounting plate are detachably connected via screws.

[0012] Optionally, the box body includes a plurality of box units, and the plurality of box units are sequentially spliced ​​with each other.

[0013] Optionally, the mounting plate includes a plurality of plate units, and the plurality of plate units are sequentially spliced ​​with each other.

[0014] Optionally, the limiting device includes a connecting member and a limiting member, the connecting member is respectively connected to the box body and the limiting member, the limiting member is in contact with the mounting plate, and the connecting member is suitable for limiting the displacement of the mounting plate relative to the box body through the limiting member.

[0015] Optionally, the box assembly further comprises a fixing member, the limiting member is sleeved on the portion of the guide member passing through the mounting plate, and the fixing member is suitable for sequentially connecting the connecting member, the limiting member and the guide member along the depth direction of the box body.

[0016] Optionally, the box assembly further comprises a box cover, wherein the box cover is slidably and detachably connected to the box body.

[0017] Another object of the present invention is to provide a modular metering box, comprising the box assembly as described above.

[0018] Optionally, the modular metering box further includes a main switch, a user switch, a communication module and a plurality of smart electricity meters, and the main switch, the user switch, the communication module and the smart electricity meters are detachably connected to the mounting plate of the box assembly.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: when the mounting plate is installed to the box body, the mounting plate is first placed inside the box body, and then the mounting plate is prompted to slide to a position where it is engaged with the box body. At this time, the mounting plate and the box body are engaged to form a pre-positioning and basic fixation, and finally the displacement of the mounting plate relative to the box body is limited by the limiting device; when the mounting plate is removed from the inside of the box body, the limiting device is first removed, and then the mounting plate is prompted to slide to a position where it is disengaged from the engagement with the box body. At this time, the mounting plate and the box body are released from the restriction, and the mounting plate can be lifted out of the box body. Compared with the existing mounting plate fixed inside the box body by a large number of screws or bolts, the box assembly of the present invention can be quickly disassembled and removed, thereby improving the loading and unloading efficiency of the modular metering box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of an implementation mode of a box assembly in the present invention;

[0021] Figure 2 for Figure 1 A partial enlarged view of point C in the middle;

[0022] Figure 3It is an exploded schematic diagram of an embodiment of the box assembly in the present invention;

[0023] Figure 4 It is a structural schematic diagram of an implementation mode of the mounting plate in the present invention;

[0024] Figure 5 It is a structural schematic diagram of another embodiment of the mounting plate in the present invention;

[0025] Figure 6 It is a partial schematic diagram of the connection between adjacent plate units in the present invention;

[0026] Figure 7 A cross-sectional view of a box assembly in the present invention from one perspective;

[0027] Figure 8 for Figure 6 A partial enlarged view of the middle A;

[0028] Fig. 9 This is a schematic structural diagram of an implementation mode of the box body in the present invention;

[0029] Fig.10 for Figure 8 A partial enlarged view of point B in the middle;

[0030] Fig.11 It is a structural schematic diagram of an implementation mode of the limiting device in the present invention;

[0031] Fig.12 It is a schematic diagram of the assembly of the limiting device and the guide member in the present invention;

[0032] Fig.13 It is a cross-sectional view of another embodiment of the box assembly in the present invention;

[0033] Fig.14 for Fig.13 A partial enlarged view of point D in the middle;

[0034] Fig.15 It is a structural schematic diagram of another embodiment of the box assembly in the present invention;

[0035] Fig.16 for Fig.15 A partial enlarged view of point E in the middle;

[0036] Fig.17 It is a structural schematic diagram of another embodiment of the box assembly in the present invention;

[0037] Fig.18 It is a structural schematic diagram of an implementation mode of a modular metering box in the present invention.

[0038] Description of reference numerals:

[0039] 1. Box body; 11. Box unit; 12. Stopper; 13. Connecting seat; 14. Screw; 2. Mounting plate; 21. Plate unit; 22. Plug-in structure; 23. Slot structure; 24. Channel; 25. Socket; 3. Limiting device; 31. Connecting piece; 32. Limiting piece; 321. Limiting edge; 33. Plug-in; 4. Card structure; 5. Card slot structure; 6. Box cover; 7. Guide; 8. Fixing piece; 9. Smart energy meter; 10. Main switch. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0041] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment" and "one implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementations in a suitable manner.

[0043] Moreover, the Z-axis in the drawings represents the vertical direction, that is, the up and down direction, and the positive direction of the Z-axis (that is, the direction of the arrow of the Z-axis) represents the top, and the negative direction of the Z-axis (that is, the direction opposite to the positive direction of the Z-axis) represents the bottom; the X-axis in the drawings represents the left and right direction, and the positive direction of the X-axis (that is, the direction of the arrow of the X-axis) represents the left, and the negative direction of the X-axis (that is, the direction opposite to the positive direction of the X-axis) represents the right; the Y-axis in the drawings represents the front and back direction, and the positive direction of the Y-axis (that is, the direction of the arrow of the Y-axis) represents the front, and the negative direction of the Y-axis (that is, the direction opposite to the positive direction of the Y-axis) represents the back; it should be noted that the aforementioned Z-axis, Y-axis and X-axis are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0044] like Figure 1 , 2As shown in Figures 3, the present invention provides a box assembly, including a box body 1, a mounting plate 2 and a limiting device 3, wherein the mounting plate 2 is arranged inside the box body 1, and the mounting plate 2 is suitable for sliding to a position for engaging with the box body 1; the limiting device 3 is arranged between the box body 1 and the mounting plate 2, and the limiting device 3 is used to limit the displacement of the mounting plate 2 relative to the box body 1.

[0045] After adopting the box assembly of the present invention, when the mounting plate 2 is installed to the box body 1, the mounting plate 2 is first placed into the box body 1, and then the mounting plate 2 is prompted to slide to a position where it is engaged with the box body 1. At this time, the mounting plate 2 and the box body 1 are engaged to form a pre-positioning and basic fixation, and finally the displacement of the mounting plate 2 relative to the box body 1 is limited by the limiting device 3; when the mounting plate 2 is disassembled from the inside of the box body 1, the limiting device 3 is first removed, and then the mounting plate 2 is prompted to slide to a position where it is disengaged from the engagement with the box body 1. At this time, the mounting plate 2 and the box body 1 are released from the restriction, and the mounting plate 2 can be lifted out of the box body 1. Compared with the existing mounting plate 2 fixed to the inside of the box body 1 by a large number of screws or bolts, the box assembly of the present invention can achieve quick disassembly and quick disassembly, thereby improving the loading and unloading efficiency of the modular metering box.

[0046] In this embodiment, the box assembly further includes a clamping assembly, which is disposed between the box body 1 and the mounting plate 2. The box body 1 and the mounting plate 2 are clamped together by the clamping assembly. Figure 3 , 7 As shown in Figure 8, in one embodiment, the snap-in assembly includes a slot structure 5 disposed on the mounting plate 2 and a card structure 4 disposed on the box body 1. The slot structure 5 is provided with an inlet for the card structure 4 to extend into. The card structure 4 is suitable for extending into the slot structure 5 through the inlet and moving to a position for snapping with the slot structure 5.

[0047] The clamping structure 4 can be a buckle or hook provided on the box body 1. The slot structure 5 is located inside the mounting plate 2, that is, the mounting plate 2 has a certain thickness, and a cavity is provided inside the mounting plate 2. The side of the mounting plate 2 facing away from the box body 1 is recessed toward the cavity to form a recessed structure. The recessed structure is located in the cavity and an inlet is provided to form the slot structure 5, so that the clamping structure 4 can be inserted into the slot structure 5 through the inlet. At the same time, in order to achieve accurate and firm pre-positioning of the box body 1 and the mounting plate 2, multiple clamping assemblies are provided, and the multiple clamping assemblies are evenly distributed.

[0048] The snap-fit ​​assembly is arranged in this way, and after the mounting plate 2 is placed in the box body 1, the snap-fit ​​structure 4 will first enter the cavity of the mounting plate 2, and then move the mounting plate 2. A part of the snap-fit ​​structure 4 will extend into the slot structure 5 through the entrance and move to a position where it is snap-fitted with the slot structure 5, thereby playing a role in pre-positioning and basic fixation.

[0049] In other embodiments, the slot structure 5 can be provided on the box body 1, and the clamp structure 4 can be provided on the mounting plate 2. The slot structure 5 and the clamp structure 4 are the same in form as the above structure, but their positions are swapped.

[0050] In one embodiment, the limiting device 3 is located on a side of the opening of the mounting plate 2 facing the box body 1, a portion of the limiting device 3 is suitable for connecting with the box body 1, and another portion of the limiting device 3 is suitable for limiting the displacement of the mounting plate 2 relative to the box body 1 after the mounting plate 2 is snap-fitted with the box body 1.

[0051] Specifically, the limiting device 3 includes a connecting member 31 and a limiting member 32, the connecting member 31 is respectively connected to the box body 1 and the limiting member 32, the limiting member 32 is in contact with the mounting plate 2, and the connecting member 31 is suitable for limiting the displacement of the mounting plate 2 relative to the box body 1 through the limiting member 32.

[0052] In this embodiment, the connecting member 31 is columnar, and one or both ends thereof are detachably connected to the box body 1, wherein the stopper 32 and the connecting member 31 may be integrated, or the two may be detachably connected. The stopper 32 may be an irregular columnar structure, one end of which is connected to the connecting member 31, and the other end is in contact with the mounting plate 2. Figure 1 , 3 As shown, the upper and lower ends of the connecting member 31 are respectively connected to the box body, and the limiting member 32 is detachably located in the middle of the connecting member 31.

[0053] In this embodiment, Fig.14 , 15 As shown, at least one abutting member is provided at one end of the connecting member 31 facing the mounting plate 2. After the connecting member 31 is installed, the abutting member contacts the mounting plate 2. At the same time, a plug-in 33 is provided on the abutting member, and a socket 25 matching the plug-in 33 is provided on the mounting plate 2. That is, when the abutting member contacts the mounting plate, the plug-in 33 is inserted into the socket 25, thereby further realizing the fastening between the mounting plate 2 and the box body 1.

[0054] In this way, after the connection member 31 is connected to the box body 1, the limiter 32 contacts the mounting plate 2, that is, the limiter 32 plays a role of resisting the mounting plate 2. Therefore, the connection member 31 can limit the displacement of the mounting plate 2 relative to the box body 1 through the limiter 32, and plays a role of fixing the mounting plate 2. The limiter 3 is a detachable module, which is easy to disassemble.

[0055] In another embodiment, the limiting device 3 is a screw, and the screw is passed through the mounting plate 2 and the box body 1. Therefore, after the box body 1 and the mounting plate 2 are clamped together, they are locked by the screw, thereby limiting the displacement between the box body 1 and the mounting plate 2.

[0056] Embodiment 1

[0057] Different from the structure of the above-mentioned box assembly, such as Fig. 9 , 10 As shown, the box assembly also includes a guide member 7, which is arranged inside the box body 1. The mounting plate 2 is provided with a penetrating channel 24 along the thickness direction. The guide member 7 is suitable for passing through the channel 24, and the size of the channel 24 in the sliding direction of the mounting plate 2 relative to the box body 1 is larger than the size of the guide member 7.

[0058] like Fig.10 As shown, the guide member 7 is fastened in the box body 1 by screws, and one end of the guide member 7 faces the opening of the box body 1, and the mounting plate 2 is provided with a channel 24 that cooperates with the guide member 7 along the thickness direction, that is, the number and position of the guide members 7 and the channel 24 correspond. For example, the box body 1 is provided with a guide member 7 at the center position, and the mounting plate 2 needs to be provided with a channel 24 at the corresponding position.

[0059] With such arrangement, when the mounting plate 2 is placed inside the box body 1, the guide member 7 serves as a prompt for the orientation. After the channel 24 of the mounting plate 2 allows the guide member 7 to pass through, the mounting plate 2 can be pre-placed inside the box body 1, and then the mounting plate 2 can be pulled upward so that the mounting plate 2 can subsequently slide inside the box body 1 to achieve snap-in connection, thereby avoiding the problem of inaccurate alignment resulting in the inability to snap-in between the mounting plate 2 and the box body 1 and wasting time.

[0060] In order to further strengthen the holding force of the limiting member 32 on the mounting plate 2, as shown in FIG. Fig.12 As shown, the box assembly also includes a fixing member 8, the limiting member 32 is sleeved on the portion of the guide member 7 passing through the mounting plate 2, and the fixing member 8 is suitable for sequentially connecting the connecting member 31, the limiting member 32 and the guide member 7 along the depth direction of the box body 1.

[0061] like Figure 3 , 11 As shown, a groove structure is provided at one end of the stopper 32 facing the mounting plate 2, and the size of the groove structure is equal to or larger than the portion of the guide member 7 passing through the mounting plate 2, and the stopper 32 is sleeved on the guide member 7 through the groove structure; the fixing member 8 is a screw rod, and the screw rod sequentially connects the connecting member 31, the stopper 32 and the guide member 7. At the same time, a stopper edge 321 is provided at one end of the stopper 32 facing the mounting plate 2, and after the stopper 32 contacts the mounting plate, the stopper edge 321 contacts the inner wall of the channel 24, thereby further limiting the movement of the mounting plate 2 relative to the box body 1.

[0062] With such arrangement, the limit member 32 can not only hide the guide member 7, but also, under the action of the fixing member 8, can realize the connection between the connecting member 31, the limit member 32 and the guide member 7, and increase the supporting force of the limit member 32 on the mounting plate 2 under the action of the groove structure of the limit member 32.

[0063] Embodiment 2

[0064] Different from the structure of the above-mentioned box assembly, such as Figure 1 , 2 As shown, the box assembly further includes a stopper 12 , which is disposed inside the box body 1 . The stopper 12 is located on a side of the mounting plate 2 facing the opening of the box body 1 , and is suitable for contacting the mounting plate 2 .

[0065] like Figure 2 As shown, the stopper 12 is plate-shaped or block-shaped, which is arranged inside the box body 1 and is integrally formed with the box body 1. When the mounting plate 2 is placed inside the box body 1, the stopper 12 does not contact the mounting plate 2, and the stopper 12 does not cause any obstruction to the mounting plate 2. After the mounting plate 2 is snapped into the box body 1, the stopper 12 contacts the mounting plate 2, and the stopper 12 has a limiting effect on the mounting plate 2 in the depth direction of the box body 1.

[0066] In this embodiment, the stopper 12 and the snap-fit ​​assembly restrict the mounting plate 2 in the same direction. Since the box assembly is generally placed vertically (in the direction of the Z axis), after the mounting plate 2 is placed in the box body 1, it is first slid from top to bottom (in the direction of the Z axis) to achieve snap connection with the box body 1. Therefore, the stopper 12 is arranged at the lower part of the box body 1.

[0067] With such arrangement, after the mounting plate 2 and the box body 1 are snap-fitted, the stopper 12 can not only play a limiting and fixing effect, but also reduce the force on the snap-fit ​​assembly between the mounting plate 2 and the box body 1, so as to reduce the probability of damage to the snap-fit ​​assembly.

[0068] Embodiment 3

[0069] Different from the structure of the above-mentioned box assembly, the box body 1 includes a plurality of box units 11, and the plurality of box units 11 are sequentially spliced ​​with each other.

[0070] like Fig. 9 As shown, the box body 1 is assembled from a plurality of box units 11, and adjacent box units 11 are provided with matching groove structures at the bottom. The groove structures at the bottom of adjacent box units 11 are arranged side by side and are clamped together by a clamp.

[0071] In this way, multiple box units 11 can be assembled into box bodies 1 of different sizes according to actual needs, thereby realizing modular assembly of the box body 1 to reduce replacement costs. Fig. 9As shown, the box body 1 is formed by assembling three box units 11. In other embodiments, the box body 1 is formed by assembling two box units 11.

[0072] Meanwhile, when the box body 1 is formed by assembling a plurality of box units 11, the limiting device 3 is arranged at the connection between two adjacent box units 11, such as Fig. 9 As shown, a notch is provided on one side wall of adjacent box units 11 facing each other, so that the mounting plate 2 can extend from the notch into the interior of the box body 1, and the limiting device 3 is arranged at the notch of the two box units 11, and the connecting piece 31 of the limiting device 3 is respectively connected to the side walls of the two box units 11 with the notch. Specifically, the two box units 11 are respectively provided with a first mounting groove and a second mounting groove on the side walls with the notch. After the two boxes are assembled, the first mounting groove and the second mounting groove are connected to form a mounting groove structure, and the connecting piece 31 of the limiting device 3 is located in the mounting groove structure and is fastened by screws, and the connecting piece 31 and the side wall of the box body 1 with the notch are flush in the XZ plane.

[0073] With such arrangement, after the limiting device 3 is installed, the limiting device 3 can also play the role of fixing two adjacent box units 11, and cooperate with the groove structure at the bottom of the adjacent box units 11 to be connected through the clip. After the assembly is completed, the connection between the two adjacent box units 11 is more firmly.

[0074] Embodiment 4

[0075] Different from the structure of the above-mentioned box assembly, the mounting plate 2 includes a plurality of plate units 21, and the plurality of plate units 21 are sequentially spliced ​​with each other.

[0076] In this embodiment, the mounting plate 2 includes at least two plate units 21 and at least one plug-in structure arranged at adjacent ends of the two plate units 21, the plug-in structure includes a plurality of limiting structures 23 and a plurality of stop structures 22 respectively arranged at the two plate units 21, the plurality of limiting structures 23 are distributed in sequence along the first direction, and the plurality of stop structures 22 are respectively arranged corresponding to the plurality of limiting structures 23; wherein, at least one limiting structure 23 is arranged as a slot structure, and at least one stop structure 22 is arranged as a plug-in structure inserted corresponding to the slot structure; when the plug-in structure is inserted in the slot structure, the two adjacent limiting structures 23 are suitable for respectively limiting the corresponding two stop structures 22 from moving toward both ends along the thickness direction (Y-axis direction) of the mounting plate 2.

[0077] The plug-in structure includes at least three limiting structures 23 and at least three stop structures 22. Exemplarily, at least one of the three limiting structures 23 located in the middle is set as a slot structure, and at least one of the three stop structures 22 located in the middle is set as a plug-in structure. When the plug-in structure is inserted into the corresponding slot structure, the slot structure limits the movement of the plug-in structure along the thickness direction of the mounting plate 2 toward one end (for example, toward the end in the positive direction of the Y axis), and the two limiting structures 23 adjacent to the slot structure both limit the movement of the corresponding two stop structures 22 along the thickness direction of the mounting plate 2 toward the other end (for example, toward the end in the opposite direction of the Z axis). When the plug-in structure is inserted into the slot structure, since the movement directions of the corresponding two stop structures 22 are opposite to each other due to the restrictions of the two adjacent limiting structures 23, the three limiting structures 23 and the three stop structures 22 are respectively contacted to form limits, and the whole body is engaged with each other, and the structure of the plug-in structure is stable and highly reliable.

[0078] like Figure 5 , 6 As shown, two board units 21 are distributed along the left-right direction, one of the board units 21 is the first board unit, and the other board unit 21 is the second board unit. A slot structure is set on the first board unit, and a plug-in structure is set on the second board unit. Multiple slot structures are distributed along the front-to-back direction and are set on one end of the first board unit close to the second board unit. The plug-in structure is inserted into the corresponding slot structure along the left-right direction, and the side wall of the slot structure along the width direction can limit the displacement of the corresponding plug-in structure, that is, it can limit the displacement between the first board unit and the second board unit.

[0079] Two adjacent slot structures are staggered in the up-down direction, and the adjacent ends of the two adjacent slot structures along the first direction are connected as a whole, and two adjacent plug-in structures are staggered and correspondingly inserted into the two adjacent slot structures. The plug-in structure and the corresponding slot structure are inserted to form a plug-in connection structure, and the side wall of the slot structure along the first direction limits the corresponding plug-in structure to avoid the relative movement of the two adjacent board units 21 along the first direction; along the thickness direction of the board unit 21, through the insertion of the two adjacent slot structures and the corresponding adjacent two plug-in structures, the movement of the two board units 21 along the thickness direction of the board unit 21 to both ends is restricted, and a stable plug-in connection is formed between the two board units 21.

[0080] The two board units 21 are firmly engaged through multiple plug-in connection structures, and the plug-in method is easy to assemble and has strong practicality, which can realize the modular design of the electrical installation board 2. The electrical installation board 2 will no longer be limited to a fixed size and can be assembled according to actual needs, reducing the difficulty of processing, transportation, storage and other links. In the electrical field, especially in multi-meter modular metering boxes, the number of smart electric energy meters 9 may need to be adjusted according to the actual number of users. Through the assembly design, the electrical installation board 2 can be assembled according to needs, and its firmness can be ensured to avoid safety hazards such as the board unit 21 falling off, which has high application value. Figure 5 As shown, the mounting plate 2 is formed by assembling two plate units 21. Figure 4 As shown, the mounting plate 2 is formed by assembling three versions.

[0081] In this embodiment, the channel 24 of the mounting plate 2 is arranged at the joint of the two plate units 21, and the limiting member 32 of the limiting device 3 contacts the joint of the two plate units 21 to form abutment, thereby fixing the mounting plate 2 to the box body 1 and preventing the adjacent plate units 21 from detaching.

[0082] In this embodiment, one or more mounting positions are provided on the board unit 21, and the mounting positions on the board unit 21 can be used to install the main switch 10, the smart energy meter 9 or the transformer, etc. The smart energy meter 9 and various electrical appliances are installed on the board unit 21 to form a metering assembly with various electrical appliances, and the metering assembly is convenient to be installed as a whole on the box body 1 or to be disassembled from the box body 1, which is convenient for streamlined batch assembly. The modular metering box has a simple structure and strong practicality, which greatly improves the scope of application of the modular metering box.

[0083] Embodiment 5

[0084] Different from the structure of the above-mentioned box assembly, such as Fig.14 As shown, the box assembly further includes a box cover 6, and the box cover 6 and the box body 1 are slidably and detachably connected.

[0085] In this embodiment, hinges are provided on the edge of the box body 1 and the connecting member 31 , and the box cover 6 is detachably mounted on the box body 1 via the hinges, so as to achieve the purpose of closing the box body 1 .

[0086] Embodiment 6

[0087] Optionally, the box body 1 and the mounting plate 2 are detachably connected via screws 14 .

[0088] In this embodiment, Fig.13 , 14As shown, a detachable connecting seat 13 is detachably provided on the box body 1, a threaded hole is provided on the connecting seat, a through hole matching the threaded hole is provided on the mounting plate 2, and a screw 14 is passed through the threaded hole and the through hole to connect the box body 1 and the mounting plate 2.

[0089] With such arrangement, there is no need to drive screws from the back of the box body 1 to connect the box body 1 and the mounting plate 2. When the mounting plate 2 needs to be removed, the screws 14 can be directly removed from the front to achieve disassembly of the mounting plate 2.

[0090] In this embodiment, the positions of the clamping structure 4 and the connecting seat 13 on the box body 1 are universal, and the slot structure 5 of the mounting plate 2 is provided with a through hole. When the box body 1 and the mounting plate 2 need to be clamped, the clamping structure 4 is provided on the box body 1. When the box body 1 and the mounting plate 2 need to be fastened, the connecting seat 13 is provided on the box body 1, and the specific situation depends on the actual needs. For example, the connecting seats 13 can be provided on the box body 1 to cooperate with the slot structure 5 of the mounting plate 2, and the clamping structure 4 can also be provided on the box body 1 to cooperate with the slot structure 5 of the mounting plate 2, or the box body 1 can be provided with both the clamping structure 4 and the connecting seat 13 to cooperate with the slot structure 5 of the mounting plate 2.

[0091] Embodiment 7

[0092] The present invention also provides a modular metering box, comprising the box assembly as described above.

[0093] In this embodiment, Fig.18 As shown, the modular metering box also includes a main switch 10, a user switch, a communication module and a plurality of smart energy meters 9. The main switch 10, the user switch, the communication module and the smart energy meter 9 are detachably connected to the mounting plate 2 of the box assembly.

[0094] The mounting plate 2 is provided with a plurality of mounting positions, through which the mounting plate 2 is fixed to the main switch 10, the communication module and the plurality of smart energy meters 9, that is, the main switch 10, the communication module and the plurality of smart energy meters 9 are fastened together by screws after selecting corresponding installations, and finally assembled into a metering assembly structure. Figure 1 , 2 As shown, the right panel unit 21 is provided with the installation positions of the communication module, the total intelligent energy meter and the total switch, and the middle panel unit and the right panel unit are respectively provided with 6 intelligent energy meter positions, so as to realize the separate installation of the total control and each sub-meter. Among them, the communication module can be an Internet of Things module, which is used for 4G or 5G communication, forming an intelligent multi-meter modular metering box.

[0095] At present, the meter box is developing in the direction of modularization, which is gradually forming a new standard for the entire industry. In the existing modular meter box, electrical components such as smart energy meters, communication modules, main switches and transformers are all installed inside the box body 1. After the above electrical components are installed in the box body 1, the weight of the meter box is relatively large. When installing the meter box, it is necessary to use auxiliary equipment to lift it or multiple people to lift it, which is inconvenient to install. At the same time, after the meter box has been used for a period of time, when its internal components are damaged, in the existing meter box, since the fastening screws of the electrical components and the box body 1 are driven from the back of the box body 1, when the electrical components inside the box body 1 are inspected, the meter box needs to be removed from the wall as a whole, which is inconvenient for inspection. Finally, due to the update and iteration of the product, when it is necessary to add or replace electrical components, the existing box body 1 needs to replace the entire meter box, which is inconvenient to adjust. After adopting the modular meter box of the present invention, its overall structure is modular, which is convenient for streamlined and intelligent mass production, greatly improving production efficiency and reducing production costs. The mounting plate 2, the main switch 10, the communication module and multiple smart energy meters 9 and other electrical components are assembled into a metering assembly. Each electrical component is no longer installed separately on the box body 1, but is integrated on the mounting plate 2 to form a metering assembly. Since the box body 1 and the mounting plate 2 are spliced ​​structures, they can be spliced ​​into the required form according to the needs of the electrical components, thereby meeting the needs of on-site electricity management and reducing the cost of overall replacement during upgrading. During installation, after the box body 1 is fixed to the wall, the metering assembly is placed inside the box body 1, and finally the mounting plate 2 of the metering assembly is caused to slide to a position where it is engaged with the box body 1. At this time, the mounting plate 2 and the box body 1 are engaged to form a pre-positioning and basic fixation, and the displacement of the mounting plate 2 relative to the box body 1 is limited by the limit device 3. Finally, the box cover 6 is slid and installed on the box body 1. It does not require the help of auxiliary equipment and too much manpower, and can be installed by one person, which is convenient and quick. During maintenance, the limiting device 3 is first removed, and then the mounting plate 2 is caused to slide to a position where it is disengaged from the box body 1. At this time, the mounting plate 2 and the box body 1 are freed from restrictions, and the mounting plate 2 of the metering assembly can be lifted out of the box body 1. It is not necessary to remove the metering box as a whole, and then inspect each electrical component, so that quick disassembly and quick removal are achieved, which is convenient for the maintenance and replacement of the electrical components on the metering assembly. Therefore, the modular metering box of the present invention has a wide range of application prospects and has high social and economic value.

[0096] Although the disclosure is disclosed as above, the protection scope of the disclosure is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A box assembly, characterized in that: include: A box body (1), the box body (1) comprising a plurality of box units (11), the plurality of box units (11) being sequentially spliced ​​with each other; a notch is provided on a side wall of two adjacent box units (11) facing each other; A mounting plate (2) disposed inside the box body (1), the mounting plate (2) being suitable for sliding to a position for engaging with the box body (1); a limiting device (3) disposed between the box body (1) and the mounting plate (2); the limiting device (3) being disposed at the connection between two adjacent box units (11) and located at the notch between two adjacent box units (11); the limiting device (3) being used to limit the displacement of the mounting plate (2) relative to the box body (1); The limiting device (3) comprises a connecting member (31) and a limiting member (32), wherein the connecting member (31) is connected to the limiting member (32); both ends of the connecting member (31) are respectively connected to the side walls of two adjacent box units (11) provided with notches; the limiting member (32) is in contact with the mounting plate (2), and the connecting member (31) is suitable for limiting the displacement of the mounting plate (2) relative to the box body (1) through the limiting member (32); The box body (1) further comprises a box cover (6), a fixing member (8), and a guide member (7) arranged inside the box body (1); the box cover (6) is connected to the box body (1); the limiting member (32) is sleeved on a portion of the guide member (7) passing through the mounting plate (2); and the fixing member (8) is suitable for sequentially connecting the connecting member (31), the limiting member (32), and the guide member (7) along the depth direction of the box body (1).

2. The box assembly according to claim 1, characterized in that: The mounting plate (2) is provided with a through channel (24) along the thickness direction, the guide member (7) is suitable for passing through the channel (24), and the size of the channel (24) in the sliding direction of the mounting plate (2) relative to the box body (1) is larger than the size of the guide member (7).

3. The box assembly according to claim 1 or 2, characterized in that: A stopper (12) is also included, the stopper (12) being arranged inside the box body (1), the stopper (12) being located on a side of the installation plate (2) facing the opening of the box body (1), and the stopper (12) being suitable for contacting the installation plate (2).

4. The box assembly according to claim 1, characterized in that: It also comprises a snap-fit ​​assembly, which is arranged between the box body (1) and the mounting plate (2), and the box body (1) and the mounting plate (2) are snap-fitted via the snap-fit ​​assembly.

5. The box assembly according to claim 1, characterized in that: The box body (1) and the mounting plate (2) are detachably connected via screws.

6. The box assembly according to claim 1, characterized in that: The mounting plate (2) comprises a plurality of plate units (21), and the plurality of plate units (21) are sequentially spliced ​​with each other.

7. The box assembly according to claim 1, characterized in that: The box cover (6) and the box body (1) are slidably and detachably connected.

8. A modular metering box, characterized in that: Comprising a box assembly as claimed in any one of claims 1 to 7.

9. The modular metering box according to claim 8, characterized in that: It also comprises a main switch (10), a user switch, a communication module and an intelligent electric energy meter (9), wherein the main switch (10), the user switch, the communication module and the intelligent electric energy meter (9) are detachably connected to the mounting plate (2) of the box assembly.

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