Plug box assembly and power distribution system

Abstract

The utility model discloses a jack box assembly and a power distribution system, and relates to the technical field of power distribution. Wherein the jack box assembly is in plug-in connection with the bus duct, and the bus duct is provided with at least two jacks along a first direction. The jack box assembly comprises a first jack box and a second jack box. The first jack box comprises a first back plate and a first pin group, and the first pin group is arranged on the first back plate in a penetrating manner. The second jack box and the first jack box are spliced in the first direction, the second jack box comprises a second back plate and a second pin group, and the second pin group is arranged on the second back plate in a penetrating mode. And the first pin group and the second pin group are respectively inserted into two sockets of the bus duct. According to the technical scheme of the utility model, the risk of virtual connection between the jack box assembly and the bus duct is reduced, and the plugging convenience of the jack box assembly and the bus duct is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution, in particular to a plug-in box component and a power distribution system. Background Art

[0002] Busbar ducts are power distribution devices that efficiently transmit current, particularly suited to the economical and efficient wiring requirements of increasingly tall buildings and large-scale factories. Some high-current busbar ducts feature dual sockets, and plug-in boxes are a compatible device for these busbars. However, conventional plug-in boxes often present a risk of false connections when plugged into these busbars. Utility Model Content

[0003] The main purpose of the utility model is to provide a plug-in box assembly and a power distribution system, aiming to reduce the risk of false connection between the plug-in box and the bus duct.

[0004] To achieve the above objectives, the present invention proposes a plug-in box assembly that plugs into a bus duct, wherein the bus duct is provided with at least two sockets along a first direction. The plug-in box assembly includes a first plug-in box and a second plug-in box. The first plug-in box includes a first backplane and a first pin group, which is disposed through the first backplane. The second plug-in box is spliced ​​with the first plug-in box along the first direction and includes a second backplane and a second pin group, which is disposed through the second backplane. The first and second pin groups are respectively plugged into two of the sockets of the bus duct.

[0005] The technical solution of the present invention is to pass the first pin group through the first back plate and the second pin group through the second back plate, so that the first pin group of the first plug-in box can be connected to one of the sockets of the bus duct, and the second pin group of the second plug-in box can be connected to the other socket of the bus duct, thereby achieving the effect that one bus duct can at least correspond to the connection with both the first plug-in box and the second plug-in box.

[0006] In addition, for sockets of the same size, compared with the traditional solution of arranging the first plug-in box and the second plug-in box as an integral whole, the present invention splices the second plug-in box and the first plug-in box along the first direction, so that the second plug-in box and the first plug-in box have a separate structure. Therefore, the dimensions of the first plug-in box and the second plug-in box in the first direction are reduced, thereby reducing the risk of bulging of the first plug-in box and the second plug-in box in the middle position along the first direction, thereby reducing the risk of false connection between the plug-in box assembly and the bus duct. When the two sockets in a traditional bus duct with two sockets are plugged into the same integrated plug-in box, the integrated plug-in box has a large number of pins, and it is necessary to align the large number of pins with the sockets of the bus duct during plugging, which leads to the problem of inconvenient plugging. However, in the technical solution of the present invention, the first plug-in box and the second plug-in box are separated and respectively plugged into the two sockets of the bus duct, so that multiple pins are respectively dispersed on the first plug-in box and the second plug-in box, thereby reducing the number of pins on the first plug-in box and the number of pins on the second plug-in box. Therefore, it is easy for the first pin group of the first plug-in box and the second pin group of the second plug-in box to be effectively and quickly aligned with the two sockets of the bus duct, thereby improving the convenience of plugging the plug-in box assembly and the bus duct into each other.

[0007] In one embodiment, a fastening structure is provided at one end of the first backplane close to the second plug-in box and / or one end of the second backplane close to the first plug-in box, and the fastening structure is connected to the bus duct.

[0008] Such an arrangement can further increase the fixing points between the plug-in box assembly and the bus duct, improve the stability of the plug-in box assembly, and reduce the risk of deformation of the plug-in box assembly causing a loose connection between the plug pins of the plug-in box assembly and the bus duct.

[0009] In one embodiment, the fastening structure comprises:

[0010] a nut, the first back plate and / or the second back plate being mounted with the nut;

[0011] a bolt body, one end of which is threadedly connected to the nut; and

[0012] A pressing plate, the other end of the bolt body is passed through the pressing plate and locked to the pressing plate, and the bus duct is pressed onto the junction box assembly through the pressing plate.

[0013] Such a configuration improves the stability of the connection between the first plug-in box and / or the second plug-in box and the bus duct, further reduces the risk of bulging in the middle section of the plug-in box assembly, and can reduce the need to open holes in the bus duct to connect the bus duct to the plug-in box assembly, thereby reducing the risk of weak bus duct strength due to opening holes in the bus duct.

[0014] In one embodiment, the bus duct includes a base, a support portion, and a plug-in portion, wherein the base and the plug-in portion are arranged opposite to each other, the support portion is supported between the base and the plug-in portion, and the support portion and the plug-in portion jointly enclose a avoidance slot; the pressure plate includes:

[0015] A hook portion, wherein the hook portion is inserted into the avoidance slot and can press the bus duct onto the junction box assembly; and

[0016] A penetration portion is connected to the hook portion and abuts against the first back plate and / or the second back plate; the bolt body is penetrated by the penetration portion.

[0017] Such an arrangement reduces the risk of drilling holes in the bus duct and improves the connection stability between the pressure plate and the bus duct.

[0018] In one embodiment, a first locking hook assembly is provided on a side of the first plug-in box away from the second plug-in box, and a second locking hook assembly is provided on a side of the second plug-in box away from the first plug-in box. Both the first locking hook assembly and the second locking hook assembly are hooked to the bus duct.

[0019] Such an arrangement can improve the stability of the connection between the first plug-in box and the second plug-in line to the bus duct, increase the number of fixed connection points between the plug-in box assembly and the bus duct, and thus reduce the risk of deformation of the plug-in box assembly resulting in a loose connection between it and the bus duct.

[0020] In one embodiment, the first locking hook assembly includes a first locking hook body and a first positioning member. The first locking hook body hooks the bus duct and has a first positioning hole defined therein. The first positioning member penetrates the first positioning hole and detachably connects the first locking hook body to the first plug-in box.

[0021] Such an arrangement not only achieves the effect of stably hooking the first locking hook assembly with the bus duct, but also makes the structure of the first locking hook assembly relatively simple.

[0022] In one embodiment, two first positioning members and two first positioning holes are provided. The two first positioning members are respectively a first bolt and a second bolt, and the two first positioning holes are respectively a circular hole and an arc-shaped hole. The first bolt and the second bolt are respectively passed through the circular hole and the arc-shaped hole. When the second bolt is loosened from the first locking hook body, the first locking hook body can rotate about the first bolt, and the second bolt can slide within the arc-shaped hole.

[0023] With such a configuration, there is no need to completely remove the first lock hook body from the first plug-in box. The state of the first lock hook body can be changed by simply rotating the first lock hook body.

[0024] In one embodiment, the first plug-in box is provided with a first folded edge at one end close to the second plug-in box; the second plug-in box is provided with a second folded edge at one end close to the first plug-in box, and the first folded edge and the second folded edge are arranged opposite to each other; the plug-in box assembly also includes a fastener, which is passed through the first folded edge and the second folded edge to fasten the first folded edge and the second folded edge together.

[0025] Such an arrangement makes the connection between the first plug-in box and the second plug-in box more stable and also facilitates assembly and disassembly.

[0026] In one embodiment, the first plug-in box further includes a first cover plate arranged opposite to the first back plate, and at least one first folded edge is connected to the first back plate and extends toward the first cover plate; the second plug-in box further includes a second cover plate arranged opposite to the second back plate, and at least one second folded edge is connected to the second back plate and extends toward the second cover plate.

[0027] With such a configuration, on the one hand, after the first plug-in box and the second plug-in box are respectively inserted into different sockets of the bus duct, it is convenient for the user to fasten the first plug-in box and the second plug-in box on the side of the first backplane and the second backplane facing away from the bus duct; on the other hand, the strength of either the first backplane or the second backplane can be improved, thereby reducing the risk of bulging at the connection between the first backplane and the second backplane, which may cause a false connection between the first pin group and / or the second pin group and the bus duct.

[0028] In one embodiment, a sealing member is sandwiched between the first folded edge and the second folded edge.

[0029] Such an arrangement reduces the risk of dust and water entering the first plug-in box and / or the second plug-in box from between the first folded edge and the second folded edge, thereby improving the dustproof and waterproof effects and reducing the risk of creepage.

[0030] In one embodiment, the first back plate is further provided with a first guide portion, and the second back plate is further provided with a second guide portion, and the structure of the first guide portion is different from the structure of the second guide portion.

[0031] Such an arrangement allows the user to accurately and quickly plug the first plug-in box and the second plug-in box into different sockets of the bus duct, and reduces the risk of incorrect plug-in caused by plugging the first plug-in box and the second plug-in box in reverse.

[0032] In one embodiment, a first protection plate is detachably installed in the first plug-in box, and the first protection plate is arranged opposite to the first back plate.

[0033] With such an arrangement, the first protection plate effectively protects the cables and the first pin group in the first plug box, and can reduce the risk of users touching the cables and the first pin group at will.

[0034] In one embodiment, a circuit breaker is provided in the second plug-in box, the first pin group and the second pin group are electrically connected to the circuit breaker, and a switch is also provided on the side of the circuit breaker facing away from the second back panel; a second protection plate and a third protection plate are installed in the second plug-in box, the second protection plate is close to the first plug-in box and can be removably installed in the second plug-in box, and an avoidance gap is provided between the second protection plate and the third protection plate, and the avoidance gap avoids the switch.

[0035] With this arrangement, a portion of the circuit breaker can be protected. In addition, the user can control the switch of the circuit breaker through the avoidance gap without removing the second protection plate and the third protection plate, thereby facilitating the switch control of the circuit breaker.

[0036] The present invention also provides a power distribution system, comprising a bus duct and the above-mentioned plug-in box assembly, wherein the bus duct is provided with at least two sockets, and the first pin group and the second pin group are respectively inserted into two of the sockets.

[0037] Such an arrangement can reduce the risk of bulging of the first plug-in box and the second plug-in box at the middle position along the first direction, thereby reducing the risk of false connection between the plug-in box assembly and the bus duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0039] Figure 1 This is a front view schematic diagram of the internal structure of an embodiment of the plug-in box assembly provided by the utility model;

[0040] Figure 2 This is a side view of the internal structure of an embodiment of the plug-in box assembly provided by the utility model;

[0041] Figure 3 This is a schematic diagram of the connection structure between the middle part of the first plug-in box and the bus duct provided by the utility model;

[0042] Figure 4 A top view of the first plug-in box in the plug-in box assembly provided by the present utility model;

[0043] Figure 5 for Figure 2 A partial enlarged view of point A in the middle.

[0044] Description of Figure Numbers:

[0045] 100, first plug-in box; 110, first back plate; 111, first folded edge; 120, first pin group; 130, first cover plate; 140, first guide portion; 150, first protective plate;

[0046] 200, second plug-in box; 210, second back plate; 211, second folding edge; 220, second pin group; 230, second cover plate; 240, circuit breaker; 250, second guide portion; 260, second protection plate; 270, third protection plate;

[0047] 300, fastening structure; 310, nut; 320, bolt assembly; 321, bolt body; 322, pressing plate; 3221, hook portion; 3222, penetration portion;

[0048] 400, first locking hook assembly; 410, first locking hook body; 411, first positioning hole; 411a, circular hole; 411b, arc-shaped hole; 420, first positioning member; 421, first bolt; 422, second bolt;

[0049] 500, second locking hook assembly;

[0050] 600, fasteners;

[0051] 700, seals;

[0052] 800, bus duct; 810, base; 820, support portion; 830, plug-in portion; 801, avoidance slot;

[0053] X, first direction.

[0054] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0055] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0056] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0057] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0058] Busbar ducts are highly efficient power distribution devices, particularly suited to the economical wiring needs of increasingly tall buildings and large-scale factories. Some high-current busbar ducts feature dual sockets, but the corresponding plug-in boxes typically utilize a monolithic structure. This results in the plug-in box being too long and prone to bulging in the middle. Since the plugs are typically located in the middle of the back panel, bulging inwards in this area can create a risk of loose connections between the pins and the sockets.

[0059] In order to reduce the risk of false connection between a plug-in box and a bus duct, the utility model provides a plug-in box assembly.

[0060] Please refer to Figures 1 to 3In one embodiment of the present invention, the plug-in box assembly is plugged into a bus duct 800, which has at least two sockets along a first direction X. The plug-in box assembly includes a first plug-in box 100 and a second plug-in box 200. The first plug-in box 100 includes a first backplane 110 and a first pin group 120, which is disposed through the first backplane 110. The second plug-in box 200 is spliced ​​with the first plug-in box 100 along the first direction X. The second plug-in box 200 includes a second backplane 210 and a second pin group 220, which is disposed through the second backplane 210. The first pin group 120 and the second pin group 220 are respectively plugged into two of the sockets of the bus duct 800.

[0061] The bus duct 800 is an enclosed metal device composed of copper and aluminum busbars, used to distribute high power to various components in a distributed system. The bus duct 800 can have one, two, or more sockets for plugging into plug-in box components, thereby providing current to the plug-in box components. It is understood that when high current is required, the bus duct 800 can have at least two sockets, while when low current is required, the bus duct 800 can have only one socket. Aluminum alloy has a lower current carrying capacity than copper, resulting in different current carrying capacities for the same socket. For example, a single aluminum alloy socket can only carry 400A, while a single copper socket can carry 630A. The bus duct 800 in the present invention can be either a copper-intensive bus duct 800 or an aluminum-intensive bus duct 800, depending on the needs. In the present invention, when the bus duct 800 has at least two sockets along the first direction X, for example, at least two sockets can be provided in the left-right direction or at least two sockets can be provided in the front-to-back direction.

[0062] The first plug-in box 100 refers to a box body for connecting to one of the sockets of the bus duct 800. The first plug-in box 100 can be a rectangular parallelepiped, a cube, or other shapes. The first backplane 110 is the plate body of the first plug-in box 100 facing the bus duct 800. The first pin group 120 refers to a collection of multiple pins that are connected to one of the sockets of the bus duct 800. The first pin group 120 can be provided with two, three, or more pins. At least a portion of each pin of the first pin group 120 is provided outside the first backplane 110 for connecting to the socket of the bus duct 800. The other portion of each pin of the first pin group 120 can be provided inside the first plug-in box 100, so that the first plug-in box 100 can provide good protection for the portion of the first pin group 120.

[0063] The second plug-in box 200 refers to a box body for connecting to another socket of the bus duct 800. The second plug-in box 200 can be a rectangular parallelepiped, a cube, or other shapes. The second backplane 210 is the plate body of the second plug-in box 200 facing the bus duct 800. The second pin group 220 refers to a collection of multiple pins that connect to another socket of the bus duct 800. The second pin group 220 can be provided with two, three, or more pins. At least a portion of each pin of the second pin group 220 is provided outside the second backplane 210 for connecting to the socket of the bus duct 800. The other portion of each pin of the second pin group 220 can be provided inside the second plug-in box 200, so that the second plug-in box 200 can provide good protection for the portion of the second pin group 220.

[0064] The second plug-in box 200 is spliced ​​with the first plug-in box 100 along the first direction X, so that the first plug-in box 100 and the second plug-in box 200 can be plugged into two of the sockets of the bus duct 800 arranged along the first direction X. The first plug-in box 100 and the second plug-in box 200 are spliced ​​together, which means that the first plug-in box 100 and the second plug-in box 200 are provided separately and connected together by splicing. For example, the first plug-in box 100 and the second plug-in box 200 can be connected together by screw connection, clamping, or mutual abutment.

[0065] In one example, the first plug-in box 100 and the second plug-in box 200 can be two independent, non-connected boxes. In another example, the first plug-in box 100 and the second plug-in box 200 can be interconnected. Specifically, the first plug-in box 100 has a first opening on the side facing the second plug-in box 200, and the second plug-in box 200 has a second opening on the side facing the first plug-in box 100. The first opening and the second opening are connected, thereby achieving interconnection between the first plug-in box 100 and the second plug-in box 200. By connecting the first plug-in box 100 and the second plug-in box 200, the first pin group 120 in the first plug-in box 100 and the second pin group 220 in the second plug-in box 200 can be connected in parallel, thereby allowing the first plug-in box 100 and the second plug-in box 200 to draw power in parallel.

[0066] The technical solution of the present invention enables the first pin group 120 to be inserted into the first backplane 110 and the second pin group 220 to be inserted into the second backplane 210, so that the first pin group 120 of the first plug-in box 100 can be connected to one of the sockets of the bus duct 800, and the second pin group 220 of the second plug-in box 200 can be connected to another socket of the bus duct 800, thereby achieving the effect that one bus duct 800 can be connected to at least the first plug-in box 100 and the second plug-in box 200. In addition, for sockets of the same size, compared with the traditional solution of arranging the first plug-in box 100 and the second plug-in box 200 as an integral whole, the present invention splices the second plug-in box 200 and the first plug-in box 100 along the first direction X, so that the second plug-in box 200 and the first plug-in box 100 have a separate structure. Therefore, the dimensions of the first plug-in box 100 and the second plug-in box 200 in the first direction X are both reduced, thereby reducing the risk of bulging of the first plug-in box 100 and the second plug-in box 200 in the middle position along the first direction X, thereby reducing the risk of false connection between the plug-in box assembly and the bus duct 800. In addition, when the two sockets of a conventional bus duct 800 having two sockets are plugged into the same integrated plug-in box, the integrated plug-in box has a large number of pins. During plug-in, it is necessary to align the large number of pins with the sockets of the bus duct 800, which results in an inconvenient plug-in. However, in the technical solution of the present invention, the first plug-in box 100 and the second plug-in box 200 are separately provided, and the first plug-in box 100 and the second plug-in box 200 are respectively plugged into the two sockets of the bus duct 800, so that the multiple pins are respectively dispersed on the first plug-in box 100 and the second plug-in box 200, thereby reducing the number of pins of the first plug-in box 100 and the number of pins of the second plug-in box 200. Therefore, it is easy for the first pin group 120 of the first plug-in box 100 and the second pin group 220 of the second plug-in box 200 to be effectively and quickly aligned with the two sockets of the bus duct 800, thereby improving the convenience of plugging the plug-in box assembly and the bus duct 800 into each other.

[0067] Please refer to Figures 1 to 3 In one embodiment of the present invention, a fastening structure 300 is provided at one end of the first backplane 110 close to the second plug-in box 200 and / or one end of the second backplane 210 close to the first plug-in box 100 , and the fastening structure 300 is connected to the bus duct 800 .

[0068] The fastening structure 300 refers to a structure that can be connected to the bus duct 800 via fastening components or can be directly connected to the bus duct 800. For example, when the fastening structure 300 can only be connected to the bus duct 800 via fastening components, the fastening structure 300 can be a threaded hole, a nut 310, a rivet hole, or a clip hole. When the fastening structure 300 can be directly connected to the bus duct 800, the fastening structure 300 can be a screw, a bolt, a rivet, or a clip. Of course, it is understood that the bus duct 800 can be provided with a corresponding mating structure for the fastening structure 300. When connected to the bus duct 800, the fastening structure 300 can be connected directly to the bus duct 800, or it can be connected to the bus duct 800 through an adapter, thereby interlocking the bus duct 800 with the first plug-in box 100 and / or the second plug-in box 200.

[0069] Specifically, the above-mentioned fastening structure 300 can be provided only at the end of the first back panel 110 close to the second plug-in box 200, or the above-mentioned fastening structure 300 can be provided only at the end of the second back panel 210 close to the first plug-in box 100; or the above-mentioned fastening structure 300 can be provided at both the end of the first back panel 110 close to the second plug-in box 200 and the end of the second back panel 210 close to the first plug-in box 100.

[0070] By providing a fastening structure 300 at the end of the first backplane 110 near the second plug-in box 200, and by connecting the fastening structure 300 to the bus duct 800, the number of fixing points between the plug-in box assembly and the bus duct 800 is further increased, thereby improving the stability of the plug-in box assembly and reducing the risk of deformation of the first backplane 110, which could cause a loose connection between the first pin group 120 and the bus duct 800. By providing a fastening structure 300 at the end of the second backplane 210 near the first plug-in box 100, and by connecting the fastening structure 300 to the bus duct 800, the number of fixing points between the plug-in box assembly and the bus duct 800 is further increased, thereby improving the stability of the plug-in box assembly and reducing the risk of deformation of the end of the second backplane 210 near the first plug-in box 100, which could cause a loose connection between the first pin group 120 and the bus duct 800.

[0071] Please refer to Figures 1 to 3 In one embodiment of the present invention, the fastening structure 300 includes a nut 310 and a bolt assembly 320, and the nut 310 is installed on the first backplate 110 and / or the second backplate 210; one end of the bolt assembly 320 is threadedly connected to the nut 310, and the other end presses the bus duct 800 against the first backplate 110 and / or the second backplate 210.

[0072] The nut 310 is a sleeve structure with an internal thread, which is used to cooperate with the screw or bolt thread to achieve the effect of fastening two components.

[0073] The bolt assembly 320 refers to an assembly having bolt features, and the bolt assembly 320 may include only bolts, or may also include other components connected to the bolts. For example, the other components may be other adapters that are snap-connected or plugged into the bus duct 800.

[0074] Specifically, the nut 310 can be installed only on the first backplate 110. In this case, the nut 310, through the bolt assembly 320, enables the end of the first backplate 110 near the second plug-in box 200 to be connected to the bus duct 800, thereby reducing the risk of a loose connection between the first pin set 120 and the socket of the bus duct 800. Alternatively, the nut 310 can be installed only on the second backplate 210. In this case, the nut 310, through the bolt assembly 320, enables the end of the second backplate 210 near the first plug-in box 100 to be connected to the bus duct 800, thereby reducing the risk of a loose connection between the second pin set 220 and the socket of the bus duct 800. Alternatively, nuts 310 are installed on both the first back panel 110 and the second back panel 210. In this case, the nuts 310 on the first back panel 110 and the nuts 310 on the second back panel 210 can be connected to the bus duct 800 through a bolt assembly 320 respectively, thereby reducing the risk of a false connection between either the first pin group 120 or the second pin group 220 and the socket of the bus duct 800.

[0075] Such an arrangement improves the stability of the connection between the first plug-in box 100 and / or the second plug-in box 200 and the bus duct 800, and further reduces the risk of bulging in the middle section of the plug-in box assembly.

[0076] Please refer to Figure 2 and Figure 3 In one embodiment of the present invention, the bolt assembly 320 includes a bolt body 321 and a pressure plate 322. One end of the bolt body 321 is threadedly connected to the nut 310; the other end of the bolt body 321 passes through the pressure plate 322 and is locked to the pressure plate 322. The pressure plate 322 presses the bus duct 800 onto the plug-in box assembly.

[0077] The bolt body 321 refers to a threaded connector for passing through the nut 310 and the pressing plate 322 .

[0078] The pressure plate 322 is an adapter that is used to press against the bus duct 800 and is capable of abutting the bus duct 800 so that the bus duct 800 is pressed against the first backplane 110 and / or the second backplane 210. In one example, the pressure plate 322 may simply include a flat plate body, which is located on the side of the bus duct 800 facing away from the plug-in box assembly. When the bolt body 321 is locked onto the pressure plate 322 via a threaded locking member, the pressure plate 322 can abut against the side of the bus duct 800 facing away from the plug-in box assembly, thereby driving the bus duct 800 and the plug-in box assembly into abutment with each other. In another example, when the bus duct 800 is provided with a retaining slot, the retaining slot has a slot wall adjacent to the plug-in box assembly. At least a portion of the pressure plate 322 can also be inserted into the retaining slot. During the locking process, the pressure plate 322 can drive the bus duct 800 to press against the plug-in box assembly.

[0079] With such a configuration, the need to drill holes in the bus duct 800 to connect the bus duct 800 to the junction box assembly can be reduced, thereby reducing the risk of weakening the bus duct 800 due to drilling holes in the bus duct 800 .

[0080] Please refer to Figure 2 and Figure 3 In one embodiment of the present invention, the bus duct 800 includes a base 810, a support portion 820 and a plug-in portion 830. The base 810 and the plug-in portion 830 are arranged opposite to each other, and the support portion 820 is supported between the base 810 and the plug-in portion 830. The support portion 820 and the plug-in portion 830 together enclose an avoidance slot 801. The pressure plate 322 includes a hook portion 3221 and a penetration portion 3222. The hook portion 3221 is inserted into the avoidance slot 801 and can press the bus duct 800 onto the plug-in box assembly. The penetration portion 3222 is connected to the hook portion 3221 and abuts against the first back plate 110 and / or the second back plate 210. The bolt body 321 is penetrated by the penetration portion 3222.

[0081] The base 810 refers to a base body used to bear the weight of the entire bus duct 800 and the plug-in box assembly, and can be in the shape of a flat plate, a block, or a frame structure.

[0082] The support portion 820 is a portion that supports the plug-in portion 830. The support portion 820 can be in the shape of a flat plate, a column, or other frame structures.

[0083] The plug-in portion 830 is the area for plugging into the plug-in box assembly. It has a socket. The plug-in portion 830 is positioned opposite the base 810, with the support portion 820 supported between the base 810 and the plug-in portion 830. The support portion 820 and the plug-in portion 830 together form a clearance slot 801, thereby reducing material costs for the bus duct 800 and facilitating connection between the plug-in box assembly and the bus duct 800.

[0084] The hook portion 3221 is a portion for being inserted into the avoidance slot 801 of the bus duct 800 .

[0085] The insertion portion 3222 is the portion provided with a hole for the bolt body 321 to pass through. The insertion portion 3222 can be a plate-like structure, such as an L-shaped or U-shaped structure, with a hole provided for the bolt body 321 to pass through. Alternatively, the insertion portion 3222 can be a block-shaped structure with a hole provided for the bolt body 321 to pass through. The insertion portion 3222 only needs to be capable of receiving the bolt body 321 and being able to be pressed against the connector assembly.

[0086] By inserting the hook portion 3221 into the avoidance slot 801 of the bus duct 800, with the penetration portion 3222 connected to the hook portion 3221, and the bolt body 321 passing through the penetration portion 3222, the bolt body 321 can be passed through the pressure plate 322 and then locked with the locking nut, thereby achieving the effect of pressing the bus duct 800 against the plug-in box assembly, reducing the risk of opening a hole in the bus duct 800. In addition, this arrangement also improves the stability of the connection between the pressure plate 322 and the bus duct 800.

[0087] Please refer to Figures 2 to 4 In one embodiment of the present invention, a first locking hook assembly 400 is provided on a side of the first plug-in box 100 away from the second plug-in box 200, and a second locking hook assembly 500 is provided on a side of the second plug-in box 200 away from the first plug-in box 100. The first locking hook assembly 400 and the second locking hook assembly 500 are both hooked to the bus duct 800.

[0088] The first hook assembly 400 is used to hook the first plug-in box 100 onto the bus duct 800. The first hook assembly 400 may comprise only a first hook body 410. The first hook body 410 may be detachably mounted on the first plug-in box 100 and capable of hooking onto the bus duct 800. For example, the first hook body 410 may be connected to the first plug-in box 100 using screws or a snap-fit ​​connection. The bus duct 800 may be provided with corresponding hook holes or hook slots, allowing the first hook body 410 to hook into the hook holes or hook slots, thereby achieving the effect of hooking the first plug-in box 100 to the bus duct 800 via the first hook assembly 400. Alternatively, the first lock hook body 410 may include an elastic arm and a hook portion provided on the elastic arm. The user may pull the elastic arm to enable the hook portion to disengage from the hook hole or hook groove of the bus duct 800 under the drive of the elastic arm. When the user releases the elastic arm, the elastic arm naturally causes the hook portion to hook into the hook hole or hook groove of the bus duct 800.

[0089] Of course, in other examples, the first locking hook assembly 400 may include not only the first locking hook body 410, but also a first driving device, which is in transmission connection with the first locking hook body 410 to drive the first locking hook body 410 to move between a hooked state for hooking the bus duct 800 and an unlocked state for detaching from the bus duct 800. For example, if the bus duct 800 has a hooking groove or a hooking hole opening toward the first direction X, the first driving device may drive the first locking hook body 410 to move along the first direction X to detach from the bus duct 800, or to extend the first locking hook body 410 into the hooking groove or the hooking hole to achieve the effect of mutual hooking between the first locking hook body 410 and the bus duct 800.

[0090] The first driving device may include a screw-nut assembly, a gear rack assembly, or a connecting rod slider assembly.

[0091] When the first driving device includes a screw nut assembly, the first locking hook body 410 can be connected to the nut in the screw nut assembly, the nut is threadedly connected to the screw, and the screw extends along the first direction X and rotates in the first plug-in box 100, so that when the screw rotates, the nut can move along the extension direction of the screw, thereby driving the first locking hook body 410 to move along the first direction X to disengage from the bus duct 800 or hook into the hook groove or hook hole of the bus duct 800.

[0092] When the first driving device includes a gear rack assembly, the gear is rotated and arranged in the first plug-in box 100, the rack is meshed with the gear and extends along the first direction X, and the first lock hook body 410 is connected to the rack, so that when the gear rotates, the rack can move along the first direction X, thereby achieving the effect of driving the first lock hook body 410 to detach from the bus duct 800 or hook into the hook groove or hook hole of the bus duct 800.

[0093] When the first driving device includes a connecting rod and slider assembly, the connecting rod mechanism is transmission-connected to the slider and can drive the slider to slide relative to the first plug-in box 100 in the first direction X. The first lock hook body 410 is connected to the slider, so that when the slider slides, the first lock hook body 410 is driven to move, so that the first lock hook body 410 can be detached from the bus duct 800 or hooked in the hook hole or hook groove of the bus duct 800.

[0094] The second hook assembly 500 is used to hook the second plug-in box 200 onto the bus duct 800. The second hook assembly 500 may consist solely of a second hook body. If so, the structure of the second hook body may refer to the structure of the first hook body 410 described above. Of course, the second hook assembly 500 may also include a second drive mechanism. The structure of this second drive mechanism may refer to the structure of the first drive mechanism described above and will not be further described here.

[0095] By providing a first locking hook assembly 400 on a side of the first plug-in box 100 away from the second plug-in box 200, and providing a second locking hook assembly 500 on a side of the second plug-in box 200 away from the first plug-in box 100, and both the first locking hook assembly 400 and the second locking hook assembly 500 are used to hook the bus duct 800, the stability of the connection between the first plug-in box 100 and the second plug-in line to the bus duct 800 can be improved, and the number of fixed connection points between the plug-in box assembly and the bus duct 800 is increased, thereby reducing the risk of deformation of the plug-in box assembly resulting in a loose connection between it and the bus duct 800.

[0096] Please refer to Figure 3 and Figure 4 In one embodiment of the present invention, the first locking hook assembly 400 is used as an example for description. The first locking hook assembly 400 includes a first locking hook body 410 and a first positioning member 420. The first locking hook body 410 is hooked to the bus duct 800 and has a first positioning hole 411 defined therein. The first positioning member 420 passes through the first positioning hole 411 and detachably connects the first locking hook body 410 to the first plug-in box 100.

[0097] The first locking hook body 410 is a part used to be directly hooked on the bus duct 800 , and the part at least includes a connecting portion for the first positioning member 420 to pass through and a hook portion used to be hooked on the bus duct 800 .

[0098] The first positioning hole 411 is a hole through which the first positioning member 420 passes. The first positioning hole 411 can be a through hole or a threaded hole. When the first positioning hole 411 is a through hole, it can be circular, rectangular, or other shapes. The number of first positioning holes 411 can be one, two, or more.

[0099] The first positioning member 420 is a component used to position the first locking hook body 410 on the first plug-in box 100. The first positioning member 420 can be a screw, bolt, rivet, or other component that connects the first locking hook body 410 to the first plug-in box 100. The number of first positioning members 420 can be one, two, or more. The number of first positioning members 420 can be the same as the number of first positioning holes 411, or it can be less than the number of first positioning holes 411.

[0100] By passing the first positioning member 420 through the first positioning hole 411 and detachably connecting the first lock hook body 410 to the first plug-in box 100, when the first positioning member 420 passes through the first positioning hole 411, the user can directly remove the first lock hook body 410 from the first plug-in box 100, and remove the first lock hook body 410 along the opening direction of the hooking groove of the bus duct 800 or the opening direction of the hooking hole, thereby achieving the effect of unlocking the first lock hook body 410 and the bus duct 800 from each other. Conversely, when the first locking hook body 410 needs to be hooked onto the bus duct 800, the first locking hook body 410 can be inserted into the opening of the hooking slot or hooking hole of the bus duct 800. When the first locking hook body 410 and the bus duct 800 are in the hooked state, the first positioning member 420 is passed through the first positioning hole 411 and connected to the first plug-in box 100, thereby achieving the effect of stably hooking the first locking hook assembly 400 and the bus duct 800. In addition, this arrangement makes the structure of the first locking hook assembly 400 relatively simple.

[0101] like Figure 4 As shown, in one embodiment of the present invention, two first positioning members 420 and two first positioning holes 411 are provided. Each first positioning member 420 is passed through a first positioning hole 411 and is detachably connected to the first plug-in box 100 .

[0102] This configuration can reduce the risk of the first locking hook body 410 being easily rotated and loosened from the bus duct 800.

[0103] like Figure 4 As shown, the two first positioning members 420 are respectively a first bolt 421 and a second bolt 422, and the two first positioning holes 411 are respectively a circular hole 411a and an arcuate hole 411b; the first bolt 421 and the second bolt 422 are respectively passed through the circular hole 411a and the arcuate hole 411b. When the second bolt 422 is loosened from the first locking hook body 410, the first locking hook body 410 can rotate about the first bolt 421, and the second bolt 422 can slide within the arcuate hole 411b.

[0104] By setting the two first positioning members 420 as the first bolt 421 and the second bolt 422 respectively, setting the two first positioning holes 411 as the circular hole 411a and the arc-shaped hole 411b, and the first bolt 421 and the second bolt 422 are respectively passed through the circular hole 411a and the arc-shaped hole 411b, the first bolt 421 and the second bolt 422 can both press the first lock hook body 410 onto the first plug-in box 100, so as to achieve the effect of stably connecting the first lock hook body 410 to the first plug-in box 100. Furthermore, this arrangement allows the second bolt 422 to loosen the first lock hook body 410, allowing the first lock hook body 410 to rotate relative to the first bolt 421. Furthermore, by configuring the first positioning hole 411, through which the second bolt 422 passes, as an arcuate hole 411b, space is provided for the second bolt 422 to escape when the first lock hook body 410 rotates relative to the first bolt 421. This allows the first lock hook body 410 to allow the first bolt 421 to rotate without interfering with the second bolt 422 when the second bolt 422 loosens the first lock hook body 410. Furthermore, this arrangement eliminates the need to completely remove the first lock hook body 410 from the first plug-in box 100; instead, the state of the first lock hook body 410 can be changed by simply rotating the first lock hook body 410.

[0105] Furthermore, the first locking hook assembly 400 further includes an elastic member, one end of which is connected to the inner wall of the arc-shaped hole 411b, and the other end of which is connected to the second bolt 422; when the first locking hook body 410 is rotated, the elastic member can be stretched and deformed.

[0106] The elastic member in this embodiment refers to a component that can provide a restoring force when the first locking hook body 410 is in a state of hooking the busbar duct 800. The elastic member can be a spring or a spring.

[0107] With this arrangement, when the user rotates the first locking hook body 410 around the first bolt 421 to a certain angle and the first locking hook body 410 is in the unlocked state, the elastic member deforms, making it easier to connect the first plug-in box 100 to the bus duct 800 without the risk of interference. Once the first plug-in box 100 is properly connected, the user releases the first locking hook body 410, at which point the elastic member recovers its deformation and, driven by the elastic member, automatically hooks onto the bus duct 800.

[0108] It should be noted that the second locking hook assembly 500 can adopt the structure of any embodiment of the first locking hook assembly 400 described above, which will not be described in detail here.

[0109] Please refer to Figure 1 、 Figure 2 as well as Figure 5In one embodiment of the present invention, the first plug-in box 100 and the second plug-in box 200 are detachably connected.

[0110] The first plug-in box 100 and the second plug-in box 200 can be detachably connected by screw connection, snap connection, magnetic connection, or the like.

[0111] It will be appreciated that in some examples, the outlet of the first pin group 120 is located within the first plug-in box 100, and the outlet of the second pin group 220 is located within the second plug-in box 200, with the outlets of the first pin group 120 and the outlets of the second pin group 220 being connected in parallel via a cable. In this embodiment, by making the first plug-in box 100 and the second plug-in box 200 detachable, it is convenient for users to plug the first plug-in box 100 and the second plug-in box 200 into the two sockets of the bus duct 800, respectively. Furthermore, the first plug-in box 100 and the second plug-in box 200 can jointly protect the cable connecting the outlets of the first pin group 120 and the second pin group 220, thereby reducing the risk of the cable being exposed.

[0112] Please refer to Figure 2 and Figure 5 In one embodiment of the present invention, a first folded edge 111 is provided at one end of the first plug-in box 100 close to the second plug-in box 200; a second folded edge 211 is provided at one end of the second plug-in box 200 close to the first plug-in box 100, and the first folded edge 111 and the second folded edge 211 are arranged opposite to each other; the plug-in box assembly also includes a fastener 600, which is passed through the first folded edge 111 and the second folded edge 211 to fasten the first folded edge 111 and the second folded edge 211 together.

[0113] The first folded edge 111 is a connecting segment with one end connected to the first plug-in box 100 and the other end extending toward the outside or inside of the first plug-in box 100. The first folded edge 111 can be provided on the first back panel 110 and / or on other side panels of the first plug-in box 100 connected to the first back panel 110. Multiple first folded edges 111 can be provided at intervals, or the first folded edge 111 can be annular, U-shaped, or L-shaped.

[0114] The second folded edge 211 is a connecting segment with one end connected to the second plug-in box 200 and the other end extending toward the outside or inside of the second plug-in box 200. The second folded edge 211 can be provided on the second back panel 210 and / or on other side panels of the second plug-in box 200 connected to the second back panel 210. Multiple second folded edges 211 can be provided at intervals, or the second folded edge 211 can be annular, U-shaped, or L-shaped.

[0115] The fastener 600 is a connector for fixing the first folded edge 111 and the second folded edge 211. The fastener 600 may be a bolt, a screw, or a rivet.

[0116] By arranging the first folded edge 111 and the second folded edge 211 opposite to each other and passing the fastener 600 through the first folded edge 111 and the second folded edge 211 to fasten the first folded edge 111 and the second folded edge 211 together, the connection between the first plug-in box 100 and the second plug-in box 200 is more stable and easy to assemble and disassemble.

[0117] Please refer to Figure 2 and Figure 5 Furthermore, the first plug-in box 100 also includes a first cover plate 130 arranged opposite to the first back plate 110, and at least one first folded edge 111 is connected to the first back plate 110 and extends toward the first cover plate 130; the second plug-in box 200 also includes a second cover plate 230 arranged opposite to the second back plate 210, and at least one second folded edge 211 is connected to the second back plate 210 and extends toward the second cover plate 230.

[0118] Since the first pin assembly 120 is provided through the first back plate 110, when the first plug box 100 is plugged into the socket of the bus duct 800, the first back plate 110 is close to the bus duct 800. Therefore, the first cover plate 130 in this embodiment refers to a plate body provided on the side of the first back plate 110 facing away from the bus duct 800 and opposite to the first back plate 110. It can be a rectangular plate or an arc-shaped plate, etc.

[0119] Similarly, the second cover plate 230 refers to a plate disposed on the side of the second back plate 210 facing away from the bus duct 800 and opposite the second back plate 210. It can be a rectangular plate or an arc-shaped plate, for example. The first cover plate 130 and the second cover plate 230 can be an integral structure, i.e., the side of the first plug-in box 100 opposite the first back plate 110 has an opening, and the side of the second plug-in box 200 opposite the second back plate 210 also has an opening. The integral structure formed by the first cover plate 130 and the second cover plate 230 is installed at the openings of the first plug-in box 100 and the second plug-in box 200, so that the first cover plate 130 covers the opening of the first plug-in box 100, and the second cover plate 230 covers the opening of the second plug-in box 200, thereby reducing assembly steps and improving the sealing between the first plug-in box 100 and the second plug-in box 200. Of course, in other examples, the first cover plate 130 and the second cover plate 230 can also be separate structures.

[0120] By extending the first folded edge 111 toward the first cover plate 130 and the second folded edge 211 toward the second cover plate 230, on the one hand, after the first plug-in box 100 and the second plug-in box 200 are respectively inserted into different sockets of the bus duct 800, it is convenient for the user to fasten the first plug-in box 100 and the second plug-in box 200 on the side of the first back panel 110 and the second back panel 210 away from the bus duct 800; on the other hand, the strength of either the first back panel 110 or the second back panel 210 can be improved, thereby reducing the risk of bulging at the connection between the first back panel 110 and the second back panel 210, which may cause a false connection between the first pin group 120 and / or the second pin group 220 and the bus duct 800.

[0121] like Figure 5 As shown, in one embodiment of the present invention, a sealing member 700 is sandwiched between the first folded edge 111 and the second folded edge 211 .

[0122] The sealing member 700 may be a sealing strip or a sealing gasket, etc., which is used to seal the gap between the first folded edge 111 and the second folded edge 211. The sealing member 700 may be made of rubber, silicone or foam.

[0123] By sandwiching a seal 700 between the first fold edge 111 and the second fold edge 211, the gap between the first fold edge 111 and the second fold edge 211 can be sealed, thereby reducing the risk of dust and water entering the first plug-in box 100 and / or the second plug-in box 200 from between the first fold edge 111 and the second fold edge 211, thereby improving the dustproof and waterproof effects and reducing the risk of creepage.

[0124] like Figure 2 As shown, in one embodiment of the present invention, the first back plate 110 further includes a first guide portion 140 , and the second back plate 210 further includes a second guide portion 250 . The structure of the first guide portion 140 is different from that of the second guide portion 250 .

[0125] The first guide portion 140 is a component used to guide the first pin assembly 120 when inserted into a socket of the busbar duct 800. For example, it can be a guide plate, a guide post, or a guide hole. The first guide portion 140 can be protruding from the first back plate 110 or connected to the first back plate 110 via a detachable connection.

[0126] The second guide portion 250 is a component used to guide the second pin assembly 220 when inserted into another socket of the bus duct 800. For example, it can be a guide plate, a guide post, or a guide hole. The second guide portion 250 can be protruding from the second back plate 210 or connected to the second back plate 210 via a detachable connection.

[0127] The difference in structure between the first guide portion 140 and the second guide portion 250 can refer to a difference in shape between the first guide portion 140 and the second guide portion 250. For example, the first guide portion 140 is plate-shaped, while the second guide portion 250 is columnar. Alternatively, the first guide portion 140 includes a connecting portion connected to the first back plate 110 and two guide posts connected to the connecting portion, while the second guide portion 250 includes a connecting portion connected to the second back plate 210 and one guide post connected to the second connecting portion. In other words, the difference in the number of guide posts in the first guide portion 140 and the second guide portion 250 results in a difference in the overall shape of the first guide portion 140 and the second guide portion 250. Alternatively, both the first guide portion 140 and the second guide portion 250 may be hole-shaped, but one of the first guide portion 140 and the second guide portion 250 may be a circular hole, while the other may be a rectangular hole.

[0128] The first guide portion 140 and the second guide portion 250 have different structures, which can also mean that the first guide portion 140 and the second guide portion 250 have the same shape but different sizes. For example, the first guide portion 140 and the second guide portion 250 are respectively connected to the first back plate 110 and the second back plate 210, and the diameter of the first guide portion is larger than the diameter of the second guide portion, or the diameter of the first guide portion is smaller than the diameter of the second guide portion. For another example, the first guide portion 140 and the second guide portion 250 are respectively connected to the first back plate 110 and the second back plate 210, and the first guide plate and the second guide plate are both rectangular plates, and the thickness of the first guide plate is different from the thickness of the second guide plate, or the length of the first guide plate is different from the length of the second guide plate, or the width of the first guide plate is different from the width of the second guide plate. It can be understood that the bus duct 800 is provided with a first matching structure and a second matching structure corresponding to the first guide portion 140 and the second guide portion 250 respectively, so that the first guide portion 140 can be plugged into and matched with the first matching structure and the second guide portion 250 can be plugged into and matched with the second matching structure.

[0129] This configuration allows the user to accurately and quickly plug the first plug-in box 100 and the second plug-in box 200 into different sockets of the bus duct 800, and reduces the risk of incorrect plug-in due to plugging the first plug-in box 100 and the second plug-in box 200 in reverse.

[0130] like Figure 2 As shown, in one embodiment of the present invention, a first protection plate 150 is detachably installed in the first plug-in box 100 , and the first protection plate 150 is arranged opposite to the first back plate 110 .

[0131] The first protective plate 150 can be a glass or metal plate, and can be rectangular, circular, or other shapes. The first protective plate 150 is used to effectively protect the cables and first pin assembly 120 within the first plug-in box 100. Specifically, the first plug-in box 100 can be provided with a mounting bracket, to which the first protective plate 150 can be mounted using screws, snaps, magnets, or other methods. Alternatively, the first plug-in box 100 can have a mounting opening opposite the first back panel 110, and the first protective plate 150 can be installed at this opening.

[0132] By installing the first protective plate 150 within the first plug-in box 100 and arranging it opposite the first back panel 110, the first protective plate 150 effectively protects the cables and first pin assembly 120 within the first plug-in box 100, and reduces the risk of users accidentally touching the cables and first pin assembly 120. Furthermore, by making the first protective plate 150 detachable from the first plug-in box 100, it can be removed from the first plug-in box 100, providing ample clearance for users to connect cables to the outlet of the first pin assembly 120, making cable connections more convenient.

[0133] like Figure 2 As shown, in one embodiment of the present invention, a circuit breaker 240 is provided in the second plug-in box 200, and the first pin group 120 and the second pin group 220 are both electrically connected to the circuit breaker 240. A switch is also provided on the side of the circuit breaker 240 facing away from the second back panel 210; a second protection plate 260 and a third protection plate 270 are installed in the second plug-in box 200, and the second protection plate 260 is close to the first plug-in box 100 and can be detachably installed in the second plug-in box 200. An avoidance gap is provided between the second protection plate 260 and the third protection plate 270, and the avoidance gap avoids the switch.

[0134] The second protective plate 260 can be a glass plate or a metal plate, and its shape can be a rectangular plate, a circular plate or a plate of other shapes. The third protective plate 270 can be a glass plate or a metal plate, and its shape can be a rectangular plate, a circular plate or a plate of other shapes. The second protective plate 260 and the third protective plate 270 together have a good protective effect on the cables and circuit breaker 240 in the second plug-in box 200. Specifically, a mounting bracket can be provided in the second plug-in box 200, and the second protective plate 260 and / or the third protective plate 270 can be installed on the mounting bracket by means of screws, snap-on magnets, etc., or the box body of the second plug-in box 200 has a mounting opening opposite to the second back panel 210, and the second protective plate 260 and / or the third protective plate 270 can be installed at the mounting opening.

[0135] Because the second protection plate 260 is installed in the second plug-in box 200, and the second protection plate 260 is removably installed near the first plug-in box 100, when the user connects the circuit breaker 240 to the first pin assembly 120 in the first plug-in box 100 via a cable, the user can first remove the first protection plate 150 in the first plug-in box 100 and the second protection plate 260 in the second plug-in box 200, thereby providing space for the user to connect the cables. Once the second protection plate 260 is installed in the second plug-in box 200, it can protect a portion of the circuit breaker 240.

[0136] By also installing a third protection plate 270 in the second plug-in box 200 and providing an avoidance gap between the second protection plate 260 and the third protection plate 270, the avoidance gap is used to avoid the switch of the circuit breaker 240 away from the side of the second back plate 210. This makes it convenient for the user to control the switch of the circuit breaker 240 through the avoidance gap without removing the second protection plate 260 and the third protection plate 270, thereby facilitating the switch control of the circuit breaker 240.

[0137] Furthermore, the third protection plate 270 can also be installed in the second plug-in box 200 in a detachable connection manner. Such a setting facilitates the subsequent removal of the third protection plate 270 so that the user can connect the power supply from the plug-in box assembly to the electrical device.

[0138] Please refer to Figures 1 to 3 The present invention also provides a power distribution system comprising a bus duct 800 and a plug-in box assembly. The specific structure of the plug-in box assembly is similar to the above-described embodiments. Since the present power distribution system utilizes all of the technical solutions of all of the above-described embodiments, it at least possesses all of the beneficial effects provided by the technical solutions of the above-described embodiments, and therefore will not be further detailed here. The bus duct 800 is provided with at least two sockets, into which the first and second pin groups 120 and 220 are inserted, respectively.

[0139] This arrangement allows a single bus duct 800 to accommodate at least the first and second plug-in boxes 100, 200. Furthermore, for sockets of the same size, compared to the conventional arrangement of the first and second plug-in boxes 100, 200 as a single unit, the present invention achieves a separate structure by splicing the second plug-in box 200 with the first plug-in box 100 along the first direction X. Consequently, the dimensions of the first and second plug-in boxes 100, 200, along the first direction X are reduced, thereby reducing the risk of bulging in the middle of the first and second plug-in boxes 100, 200, and thereby reducing the risk of poor connection between the plug-in box assembly and the bus duct 800.

[0140] The above are merely exemplary embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A plug-in box assembly, characterized in that: Connected to the bus duct, the bus duct is provided with at least two sockets along the first direction; the plug-in box assembly includes: A first plug-in box, comprising a first backplane and a first pin group, wherein the first pin group is disposed through the first backplane; and The second plug-in box is spliced ​​with the first plug-in box along the first direction, and the second plug-in box includes a second back panel and a second pin group, and the second pin group is passed through the second back panel; the first pin group and the second pin group are respectively plugged into two of the sockets of the bus duct.

2. The plug-in box assembly according to claim 1, wherein: A fastening structure is provided at one end of the first backplane close to the second plug-in box and / or at one end of the second backplane close to the first plug-in box, and the fastening structure is connected to the bus duct.

3. The plug-in box assembly according to claim 2, wherein: The fastening structure comprises: a nut, the first back plate and / or the second back plate being mounted with the nut; a bolt body, one end of which is threadedly connected to the nut; and A pressing plate, the other end of the bolt body is passed through the pressing plate and locked to the pressing plate, and the bus duct is pressed onto the junction box assembly through the pressing plate.

4. The plug-in box assembly according to claim 3, wherein: The bus duct includes a base, a support portion, and a plug-in portion. The base and the plug-in portion are arranged opposite to each other, the support portion is supported between the base and the plug-in portion, and the support portion and the plug-in portion jointly enclose a avoidance slot; the pressure plate includes: A hook portion, wherein the hook portion is inserted into the avoidance slot and can press the bus duct onto the junction box assembly; and A penetration portion is connected to the hook portion and abuts against the first back plate and / or the second back plate; the bolt body is penetrated by the penetration portion.

5. The plug-in box assembly according to claim 2, wherein: A first locking hook assembly is provided on a side of the first plug-in box away from the second plug-in box, and a second locking hook assembly is provided on a side of the second plug-in box away from the first plug-in box. Both the first locking hook assembly and the second locking hook assembly are hooked to the bus duct.

6. The plug-in box assembly according to claim 5, wherein: The first locking hook assembly includes: a first locking hook body, the first locking hook body being hooked on the bus duct, and a first positioning hole being provided on the first locking hook body; and A first positioning member is provided, wherein the first positioning member passes through the first positioning hole and detachably connects the first locking hook body to the first plug-in box.

7. The plug-in box assembly according to claim 6, wherein: There are two first positioning members and two first positioning holes, the two first positioning members are a first bolt and a second bolt, and the two first positioning holes are a circular hole and an arc-shaped hole respectively; the first bolt and the second bolt pass through the circular hole and the arc-shaped hole respectively; When the second bolt loosens the first locking hook body, the first locking hook body can rotate around the first bolt, and the second bolt can slide in the arc-shaped hole.

8. The plug-in box assembly according to any one of claims 1 to 7, characterized in that: The first plug-in box is provided with a first folded edge at one end close to the second plug-in box; the second plug-in box is provided with a second folded edge at one end close to the first plug-in box, and the first folded edge and the second folded edge are arranged opposite to each other; the plug-in box assembly also includes a fastener, which is passed through the first folded edge and the second folded edge to fasten the first folded edge and the second folded edge together.

9. The plug-in box assembly according to claim 8, wherein: The first plug-in box also includes a first cover plate arranged opposite to the first back plate, at least one first folded edge is connected to the first back plate and extends toward the first cover plate; the second plug-in box also includes a second cover plate arranged opposite to the second back plate, at least one second folded edge is connected to the second back plate and extends toward the second cover plate.

10. The plug-in box assembly according to claim 9, wherein: A sealing member is sandwiched between the first folded edge and the second folded edge.

11. The plug-in box assembly according to any one of claims 1 to 7, characterized in that: The first back plate is further provided with a first guide portion, and the second back plate is further provided with a second guide portion, wherein the structure of the first guide portion is different from that of the second guide portion; And / or, a first protection plate is detachably installed in the first plug-in box, and the first protection plate is arranged opposite to the first back plate; And / or, a circuit breaker is provided in the second plug-in box, the first pin group and the second pin group are electrically connected to the circuit breaker, and a switch is also provided on the side of the circuit breaker facing away from the second back panel; a second protective plate and a third protective plate are installed in the second plug-in box, the second protective plate is close to the first plug-in box and can be removably installed in the second plug-in box, and an avoidance gap is provided between the second protective plate and the third protective plate, and the avoidance gap avoids the switch.

12. A power distribution system, characterized in that: The invention comprises a bus duct and a junction box assembly according to any one of claims 1 to 11, wherein the bus duct is provided with at least two sockets, and the first pin group and the second pin group are respectively inserted into two of the sockets.

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