Wire inlet assembly, wire inlet and outlet circuit assembly and switching unit

Abstract

The utility model discloses an incoming line assembly, an incoming and outgoing line circuit assembly and a switching unit, which belong to the technical field of low-voltage cabinets, and comprise an A-phase incoming line assembly, a B-phase incoming line assembly and a C-phase incoming line assembly which are arranged at intervals, each incoming line assembly comprises an incoming line contact finger, an incoming line blade and a conductive connecting piece used for connecting the incoming line contact finger and the incoming line blade, at least two incoming line blades are distributed on each incoming line assembly at intervals, one incoming line blade on the A-phase incoming line assembly is coaxial with the incoming line contact finger, and the incoming line blades on the other incoming line assemblies and the other incoming line blades and the incoming line contact fingers on the A-phase incoming line assembly are not coaxial; by improving the structure of the A-phase wire inlet assembly to shorten the length of the A-phase wire inlet assembly, compared with a mode of shortening the A-phase wire inlet assembly in equal proportion, the length of the A-phase wire inlet assembly can be shorter, the position of the copper bar assembly is not changed, the size of the wire inlet socket is not increased, and the switching unit and the low-voltage cabinet provided with the wire inlet assembly are helped to realize extremely narrow design.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage cabinets, in particular to an incoming line component, an incoming and outgoing line circuit component and a switching unit. Background Art

[0002] The utility model is a switching unit installed in a low-voltage cabinet. The width of the switching unit limits the minimum width of the low-voltage cabinet. The size of the switching unit in the prior art results in the minimum size of the low-voltage cabinet being only 600 mm wide, which makes it impossible to further design an ultra-narrow cabinet for the existing low-voltage cabinet. Since the switching unit contains a switching circuit, which involves copper bars, spring clips, blades, etc. for linking the circuit, the switching unit cannot be simply reduced in size in proportion when being designed to be extremely narrow. Instead, the structure and circuit inside the switching unit need to be optimized, which makes it difficult to design the switching unit and the low-voltage cabinet to be extremely narrow. Moreover, the narrower the target width, the greater the design difficulty.

[0003] Therefore, how to design an incoming line assembly, an incoming and outgoing line circuit assembly and a switching unit to adapt to a low-voltage cabinet with a smaller width is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0004] The utility model aims to provide an incoming line assembly, an incoming and outgoing line circuit assembly and a switching unit to address the defects and shortcomings in the prior art, so as to shorten the size of the incoming line assembly and adapt to low-voltage cabinets with smaller widths.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model provides an incoming line component, comprising an A-phase incoming line component, a B-phase incoming line component and a C-phase incoming line component which are arranged at intervals, each incoming line component comprising an incoming line contact finger, an incoming line blade and a conductive connecting piece for connecting the incoming line contact finger and the incoming line blade, at least two of the incoming line blades are spaced apart on each incoming line component, and one of the incoming line blades on the A-phase incoming line component is coaxially arranged with the incoming line contact finger, and the incoming line blades on the remaining incoming line components and the remaining incoming line blades and the incoming line contact finger on the A-phase incoming line component are not coaxial.

[0007] Preferably, the line-inlet contact finger and the line-inlet blade coaxial therewith are respectively located on the upper and lower sides of the conductive connector.

[0008] The utility model also provides an inlet and outlet circuit assembly, comprising a housing, the inlet assembly and the outlet assembly;

[0009] One side of the housing facing the low-voltage cabinet is provided with an incoming line socket and an outgoing line socket connected to the switch components in the low-voltage cabinet, and one side of the housing away from the low-voltage cabinet is provided with a busbar assembly for supplying power to the incoming line assembly and an outgoing line port for supplying power to electrical equipment;

[0010] The busbar assembly includes an A-phase busbar, a B-phase busbar, and a C-phase busbar. The incoming line contact fingers are connected to the corresponding busbars in the busbar assembly. One incoming line blade in the A-phase incoming line assembly, one incoming line blade in the B-phase incoming line assembly, and one incoming line blade in the C-phase incoming line assembly are arranged to form the insertion pieces of the incoming line socket, and the incoming line blades constituting the same incoming line socket are located on the same side of their respective conductive connection members;

[0011] The outgoing line assembly includes an A-phase outgoing line assembly, a B-phase outgoing line assembly, and a C-phase outgoing line assembly. The A-phase outgoing line assembly, the B-phase outgoing line assembly, and the C-phase outgoing line assembly each include an outgoing line blade and an outgoing line copper part connected to the outgoing line blade. One outgoing line blade in the A-phase outgoing line assembly, one outgoing line blade in the B-phase outgoing line assembly, and one outgoing line blade in the C-phase outgoing line assembly are arranged to form the insertion pieces of the outgoing line socket, and the outgoing line blades constituting the same outgoing line socket are located on the same side of their respective outgoing line copper parts. The ends of the outgoing line copper parts of the A-phase outgoing line assembly, the B-phase outgoing line assembly, and the C-phase outgoing line assembly away from their outgoing line blades are arranged to form the outgoing line port.

[0012] Preferably, the distance between adjacent incoming line blades in the A-phase incoming line assembly is L 1 and the distance between adjacent incoming line blades in the B-phase incoming line assembly is L 2 and the distance between adjacent incoming line blades in the C-phase incoming line assembly is L 3 , L 1 = L 2 = L 3 so that the structures of at least two groups of incoming line sockets formed by the incoming line blades in the A-phase incoming line assembly, the B-phase incoming line assembly, and the C-phase incoming line assembly are the same.

[0013] Preferably, the three incoming line assemblies are arranged at intervals from top to bottom, and an outgoing line assembly is provided in the interval between adjacent incoming line assemblies, and the other outgoing line assembly is located above the top incoming line assembly or below the bottom incoming line assembly.

[0014] Preferably, the housing includes a detachable front cover plate and a rear cover plate. The rear cover plate is provided with a first placement groove for inserting the conductive connection member and a second placement groove for inserting the outgoing line copper part. The first placement groove and the adjacent second placement groove are arranged in parallel.

[0015] Preferably, the incoming and outgoing line circuit assembly comprises a first incoming and outgoing line circuit box and a second outgoing line circuit box arranged side by side, the first incoming and outgoing line circuit box is provided with the incoming line assembly and a group of the outgoing line assemblies, the other group of the outgoing line assemblies is placed in the second outgoing line circuit box, the incoming line assembly is provided with two spaced-apart incoming line blades, the outgoing line blade located in the first incoming and outgoing line circuit box is located between the two incoming line blades, and the outgoing line assembly located in the second outgoing line circuit box and the incoming line assembly adjacent thereto constitute a group of incoming and outgoing line circuits, and the outgoing line assembly located in the first incoming and outgoing line circuit box and the other incoming line assembly constitute another group of incoming and outgoing line circuits.

[0016] The utility model also provides a switching unit, including the input and output line circuit assembly, a detachably connected panel and base, and at least two secondary plug-ins, wherein the panel and the base form a box-like structure with a cavity inside, and the input and output line circuit assembly and the secondary plug-ins are respectively arranged in the cavity.

[0017] Preferably, a guide pin is provided on the front end surface of the panel, and the outer diameter of the guide pin is matched with the inner diameter of the guide through hole on the low-voltage cabinet.

[0018] Preferably, a support column is respectively provided at the upper end and the lower end of the base, and one end of the support column away from the base is in contact with the panel.

[0019] Compared with the prior art, the utility model has achieved the following technical effects:

[0020] The utility model improves the structure of the A-phase incoming line assembly by arranging one of the incoming line blades on the A-phase incoming line assembly coaxially with the incoming line contact finger, and arranging the incoming line blades on the remaining incoming line assemblies and the remaining incoming line blades and the incoming line contact fingers on the A-phase incoming line assembly coaxially, so as to shorten the length thereof. Compared with the method of shortening in proportion, the utility model can shorten the length of the A-phase incoming line assembly without changing the setting position of the copper busbar assembly connected to the incoming line assembly, and will not increase the size of the incoming line socket composed of the incoming line blades, which helps to achieve an extremely narrow design for the switching unit and the low-voltage cabinet equipped with the incoming line assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a structural schematic diagram of the incoming line component;

[0023] Figure 2 A schematic diagram of the top view of the A-phase incoming line assembly without the incoming line contact fingers and the incoming line blades;

[0024] Figure 3 It is a schematic diagram of the cross-sectional structure of AA;

[0025] Figure 4 It is a schematic diagram of the main structure of the incoming and outgoing line circuit components;

[0026] Figure 5 It is a top view structural diagram of the incoming and outgoing line circuit components;

[0027] Figure 6 It is a schematic diagram of the axial structure of the incoming and outgoing line circuit components;

[0028] Figure 7 A schematic diagram of the main structure of the input and output circuit components without the housing;

[0029] Figure 8 A schematic diagram of the axial structure of the input and output circuit components without the housing;

[0030] Figure 9 It is a schematic diagram of the exploded structure of the first incoming and outgoing line circuit box;

[0031] Figure 10 It is a schematic diagram of the shaft side structure of the transfer unit;

[0032] Figure 11 is a schematic diagram of the rear view structure of the switching unit;

[0033] Figure 12 Schematic diagram of the exploded structure of the transfer unit.

[0034] Among them, 1. A phase incoming line assembly; 2. B phase incoming line assembly; 3. C phase incoming line assembly; 4. Incoming line contact finger; 5. Incoming line blade; 6. Conductive connector; 7. First connecting shaft; 8. Second connecting shaft; 9. Incoming line socket; 10. Outgoing line socket; 11. Outgoing line port; 12. A phase outgoing line assembly; 13. B phase outgoing line assembly; 14. C phase outgoing line assembly; 15. Outgoing line blade; 16. Outgoing line copper fittings; 17. Front cover; 18. Rear cover; 19. First placement slot ; 20. Second placement slot; 21. First input and output line circuit box; 22. Second output line circuit box; 23. First output line assembly; 24. Second output line assembly; 25. First input line assembly; 26. Second input line assembly; 27. Panel; 28. Base; 29. ​​Secondary plug-in; 30. Guide pin; 31. Support column; 32. Output line cover; 33. Input line socket cover; 34. Output line socket cover; 35. First shell; 36. Second shell; 37. Finger protection cover. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0037] like Figures 1 to 3 As shown, the utility model provides an incoming line assembly, including an A-phase incoming line assembly 1, a B-phase incoming line assembly 2 and a C-phase incoming line assembly 3 arranged at intervals, each incoming line assembly includes an incoming line contact finger 4, an incoming line blade 5 and a conductive connector 6 for connecting the incoming line contact finger 4 and the incoming line blade 5, each incoming line assembly is spaced apart and has at least two incoming line blades 5, and one of the incoming line blades 5 on the A-phase incoming line assembly 1 is coaxially arranged with the incoming line contact finger 4, and without changing the position of the incoming line contact finger 4 to ensure that the arrangement of the copper busbar assembly remains unchanged, if A certain incoming line blade 5 on the B-phase incoming line assembly 2 and / or a certain incoming line blade 5 on the C-phase incoming line assembly 3 are coaxially arranged with the incoming line contact 4, which will increase the area formed by the incoming line blade 5 on the A-phase incoming line assembly 1, the incoming line blade 5 on the B-phase incoming line assembly 2 and the incoming line blade 5 on the C-phase incoming line assembly 3, thereby increasing the size of the incoming line socket 9, which is not conducive to reducing the size of the low-voltage cabinet. Therefore, the present application arranges that the incoming line blades 5 on the remaining incoming line assemblies and the remaining incoming line blades 5 and the incoming line contact 4 on the A-phase incoming line assembly 1 are not coaxial.

[0038] Shortening each incoming line assembly in proportion can only reduce the size of the incoming line assembly to a certain extent, and the reduced size is limited and cannot adapt to the design of ultra-narrow cabinets. The present application creatively sets an incoming line blade 5 on the A-phase incoming line assembly 1 coaxially with the incoming line contact finger 4, and makes structural improvements to shorten the length of the A-phase incoming line assembly 1, thereby reducing the overall size of the A-phase incoming line assembly 1 while keeping the width of the A-phase incoming line assembly 1 unchanged, thereby reducing the overall size of the incoming line assembly and the adapter unit equipped with the incoming line assembly, so as to adapt to a smaller ultra-narrow cabinet.

[0039] The incoming line blade 5 coaxial with the incoming line finger 4 on the A-phase incoming line assembly 1 is connected to the incoming line finger 4 through the first connecting shaft 7, and the incoming line finger 4 and the incoming line blade 5 coaxial with it are respectively located on the upper and lower sides of the conductive connecting piece 6 to further reduce the size of the A-phase incoming line assembly 1. The first connecting shaft 7 includes two connecting columns with different diameters, one of which is connected to the incoming line finger 4 and the other is connected to the incoming line blade 5. The first connecting shaft 7 uses the connecting column with a small diameter as the raw material, and pressure is applied to one end of the connecting column to shorten its length and increase its diameter, so as to make the first connecting shaft 7 with a large diameter at one end and a small diameter at the other end. The remaining incoming line blades 5 on the A-phase incoming line assembly 1, the incoming line blades 5 on the B-phase incoming line assembly 2, and the incoming line blades 5 on the C-phase incoming line assembly 3 are all connected to the conductive connecting piece 6 through the second connecting shaft 8, and both the first connecting shaft 7 and the second connecting shaft 8 are fixedly connected to the conductive connecting piece 6.

[0040] As Figures 4 to 9 shown, the present utility model also provides an incoming and outgoing line circuit assembly, which includes a housing, an incoming line assembly and an outgoing line assembly; on one side of the housing facing the low-voltage cabinet, there are provided an incoming line socket 9 and an outgoing line socket 10 connected to the switch components in the low-voltage cabinet, and on the side of the housing away from the low-voltage cabinet, there are provided a copper row assembly (not shown in the figure) for supplying power to the incoming line assembly and an outgoing line port 11 for supplying power to the electrical equipment. The number of the incoming line socket 9, the outgoing line socket 10, the copper row assembly and the outgoing line port 11 is adapted to the number of the incoming line blades 5;

[0041] The copper row assembly includes an A-phase copper row, a B-phase copper row and a C-phase copper row. The incoming line finger 4 is connected to the corresponding copper row in the copper row assembly, that is, the incoming line finger 4 in the A-phase incoming line assembly 1 is connected to the A-phase copper row, the incoming line finger 4 in the B-phase incoming line assembly 2 is connected to the B-phase copper row, and the incoming line finger 4 in the C-phase incoming line assembly 3 is connected to the C-phase copper row. One incoming line blade 5 in the A-phase incoming line assembly 1, one incoming line blade 5 in the B-phase incoming line assembly 2 and one incoming line blade 5 in the C-phase incoming line assembly 3 are arranged to form three inserts of the incoming line socket 9, and the incoming line blades 5 forming the same incoming line socket 9 are located on the same side of their respective conductive connecting pieces 6 to reduce the size of the formed incoming line socket 9;

[0042] The outgoing line assembly includes an A-phase outgoing line assembly 12, a B-phase outgoing line assembly 13, and a C-phase outgoing line assembly 14. The A-phase outgoing line assembly 12, the B-phase outgoing line assembly 13, and the C-phase outgoing line assembly 14 all include an outgoing line blade 15 and an outgoing line copper part 16 connected to the outgoing line blade 15. One outgoing line blade 15 in the A-phase outgoing line assembly 12, one outgoing line blade 15 in the B-phase outgoing line assembly 13, and one outgoing line blade 15 in the C-phase outgoing line assembly 14 are arranged to form three inserts of the outgoing line socket 10, and the outgoing line blades 15 forming the same outgoing line socket 10 are located on the same side of their respective outgoing line copper parts 16 to reduce the size of the formed outgoing line socket 10. The ends of the outgoing line copper parts 16 of each outgoing line assembly, which are far from their outgoing line blades 15, are arranged to form an outgoing line port 11.

[0043] During use, the electricity on the copper busbar assembly is conducted to the incoming line blade 5 through the incoming line contact finger 4 and the conductive connecting part 6, and then conducted to the incoming line socket 9 through the incoming line blade 5. The switch part in the low-voltage cabinet is closed, so that the electricity on the incoming line socket 9 is conducted to the outgoing line socket 10, and then conducted to the outgoing line port 11 through the outgoing line copper part 16 to supply power to the electrical equipment connected to the outgoing line port 11.

[0044] The distance between adjacent incoming line blades 5 in the A-phase incoming line assembly 1 is L 1 , the distance between adjacent incoming line blades 5 in the B-phase incoming line assembly 2 is L 2 , the distance between adjacent incoming line blades 5 in the C-phase incoming line assembly 3 is L 3 , L 1 = L 2 = L 3 , so that the structures of at least two groups of incoming line sockets 9 formed by the incoming line blades 5 in the A-phase incoming line assembly 1, the B-phase incoming line assembly 2, and the C-phase incoming line assembly 3 are the same, thereby improving the versatility of the incoming line socket 9.

[0045] The three incoming line assemblies are arranged at intervals from top to bottom. An outgoing line assembly is provided in the interval between adjacent incoming line assemblies, and another outgoing line assembly is located above the top incoming line assembly or below the bottom incoming line assembly. As a preferred embodiment of the present application, the A-phase incoming line assembly 1, the B-phase incoming line assembly 2, and the C-phase incoming line assembly 3 are provided in sequence from top to bottom. The B-phase outgoing line assembly 13 is provided in the interval between the A-phase incoming line assembly 1 and the B-phase incoming line assembly 2, the C-phase outgoing line assembly 14 is provided in the interval between the B-phase incoming line assembly 2 and the C-phase incoming line assembly 3, the A-phase outgoing line assembly 12 is provided at the top of the A-phase incoming line assembly 1, and the interval between the incoming line assembly and the adjacent outgoing line assembly meets the requirement of the minimum creepage distance. Compared with the situation where the three outgoing line assemblies are in one area and the three incoming line assemblies are in another area, and the two areas are independent of each other without intersection, the present application further reduces the size of the incoming and outgoing line circuit assemblies by inserting the outgoing line assembly between adjacent incoming line assemblies.

[0046] If the incoming line component and the outgoing line component are not parallel, the size of the incoming and outgoing line circuit components will be increased, which is not conducive to reducing the size of the incoming and outgoing line circuit components. Therefore, in the present application, it is preferably that the adjacent incoming line component and the outgoing line component are arranged in parallel, that is, the A-phase outgoing line component 12 is parallel to the A-phase incoming line component 1, the A-phase incoming line component 1 is parallel to the B-phase outgoing line component 13, the B-phase outgoing line component 13 is parallel to the B-phase incoming line component 2, and so on.

[0047] The housing includes a front cover plate 17 and a rear cover plate 18 that are detachably connected. The rear cover plate 18 is provided with a first placement groove 19 for inserting the conductive connection member 6 and a second placement groove 20 for inserting the outgoing line copper member 16. The first placement groove 19 and the adjacent second placement groove 20 are arranged in parallel. The positions of the incoming line component and the outgoing line component are restricted by the first placement groove 19 and the second placement groove 20, so as to avoid deviation in the positions of the incoming line component and the outgoing line component during use. The incoming line socket 9 further includes a first outer shell 35, and the outgoing line socket 10 further includes a second outer shell 36. Channels that penetrate through the front and rear are provided in both the first outer shell 35 and the second outer shell 36. The incoming line blade 5 and the outgoing line blade 15 are arranged in the channels. The incoming line blade 5 is protected by the first outer shell 35, and the outgoing line blade 15 is protected by the second outer shell 36 to prevent them from being damaged. A finger protection sleeve 37 is provided on the rear cover plate 18. The incoming line finger 4 passes through the through hole in the finger protection sleeve 37 and extends out of the rear cover plate 18. The incoming line finger 4 is protected by the finger protection sleeve 37; wherein both the front cover plate 17 and the rear cover plate 18 are made of high-voltage-resistant insulating plastic material.

[0048] In order to reduce the manufacturing difficulty and reduce the deformation of parts, the present application sets an input and output line circuit assembly including a first input and output line circuit box 21 and a second output line circuit box 22 arranged side by side. The first input and output line circuit box 21 is provided with an input line assembly and a group of output line assemblies, and the other group of output line assemblies is placed in the second output line circuit box 22. For the convenience of description, the output line assembly located in the first input and output line circuit box 21 is referred to as the first output line assembly 23, and the output line assembly located in the second output line circuit box 22 is referred to as the second output line assembly 24. Two input line blades 5 distributed at intervals are provided on the input line assembly, and the two input line assemblies are respectively referred to as the first input line assembly 25 and the second input line assembly 26. The first output line assembly 23 is located between the two input line blades 5. The second output line assembly 24 and the input line assembly adjacent thereto constitute a group of input and output line circuits, and the first output line assembly 23 and the other input line assembly constitute another group of input and output line circuits. Taking the case where the first input and output line circuit box 21 and the second output line circuit box 22 are arranged side by side horizontally, the first input line component 25 is located on the left side, and the second input line component 26 is located on the right side as an example for specific description, when the second output line component 24 is located on the left side of the input line blade 5 on the left side, the second output line component 24 and the first input line component 25 constitute a group of input and output line circuits, and the first output line component 23 and the second input line component 26 constitute another group of input and output line circuits; when the second output line component 24 is located on the right side of the input line blade 5 on the right side, the second output line component 24 and the second input line component 26 constitute a group of input and output line circuits, and the first output line component 23 and the first input line component 25 constitute another group of input and output line circuits.

[0049] like Figures 10 to 12 As shown, the utility model also provides a switching unit, including an input and output line circuit assembly, a detachably connected panel 27, a base 28 and at least two secondary plug-ins 29, the panel 27 and the base 28 form a box-like structure with a cavity inside, the input and output line circuit assembly and the secondary plug-in 29 are respectively arranged in the cavity, the base 28 is provided with through holes for the contact finger protection cover 37, the outlet port 11 and the secondary plug-in 29 to extend out, the panel 27 is also provided with an input socket cover plate 33 and an output socket cover plate 34, the input socket cover plate 33 is provided with a groove adapted to the outer contour of the first shell 35, the first shell 35 is placed in the groove, and similarly, the second shell 36 is also placed in the groove on the outlet socket cover plate 34.

[0050] The front end surface of the panel 27 is provided with a guide pin 30, and the outer diameter of the guide pin 30 is adapted to the inner diameter of the guide through hole on the low-voltage cabinet. During assembly, the guide pin 30 is inserted into the guide through hole on the low-voltage cabinet to improve the position accuracy of the adapter unit and the low-voltage cabinet during assembly. A support column 31 is provided at the upper end and the lower end of the base 28, and the end of the support column 31 away from the base 28 abuts against the panel 27 to prevent the cavity surrounded by the panel 27 and the base 28 from deforming under the action of external force, thereby crushing the inlet and outlet circuit components and / or the secondary plug-in 29. As a preferred embodiment of the present application, the two support columns 31 are symmetrically arranged along the transverse symmetry axis of the base 28, and the transverse symmetry axis of the base 28 refers to the straight line formed by connecting the central axis of the two short sides of the base 28. A support column 31 can be provided at both ends of the length direction of the base 28 and the panel 27, at both ends of the width direction, and in the middle area of ​​the length direction and the middle area of ​​the width direction. In order to reduce the manufacturing difficulty and save the manufacturing cost, the present application preferably only provides the support column 31 in the middle area of ​​the length direction. The rear end face of the base 28 is provided with an internally hollow outlet cover 32, which is arranged outside the outlet port 11, and the bottom surface of the outlet cover 32 is provided with a through hole for connecting the outlet port 11 with the electrical equipment to improve the safety when the port is connected to the electrical equipment.

[0051] There are three pairs of 4.8 countersunk screw holes symmetrically arranged on the left and right sides of the panel 27, and one pair of 4.8 countersunk screw holes symmetrically arranged on the upper and lower sides of the vertical central axis of the panel 27. The eight 4.8 countersunk screw holes are used to connect and fix the panel 27 and the base 28. A pair of symmetrical M4 screw through holes are arranged on both sides of the two secondary plug-in reserved holes, and an M5 screw through hole is arranged in the center of the left edge of the inlet socket cover plate 33 and the outlet socket cover plate 34, and two M5 screw through holes are arranged on the upper and lower edges of the right edge.

[0052] Among them, the secondary plug-ins 29 are respectively an 8-mesh secondary static plug-in and a 16-mesh secondary static plug-in. The 8-mesh secondary static plug-in extends out of the adapter unit cover through the reserved hole of the panel 27, and the 8-mesh on the right side of the front end of the 16-mesh secondary static plug-in extends out of the adapter unit cover through the reserved hole of the panel 27, and the 16-mesh at the rear end extends out of the adapter unit bottom plate through the reserved hole of the base 28.

[0053] It should be noted that for those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model, and any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A line inlet assembly, characterized in that: It comprises an A-phase incoming line assembly, a B-phase incoming line assembly and a C-phase incoming line assembly arranged at intervals, each incoming line assembly comprises an incoming line contact finger, an incoming line blade and a conductive connecting piece for connecting the incoming line contact finger and the incoming line blade, at least two of the incoming line blades are spaced apart on each incoming line assembly, and one of the incoming line blades on the A-phase incoming line assembly is coaxially arranged with the incoming line contact finger, and the incoming line blades on the remaining incoming line assemblies and the remaining incoming line blades and incoming line contact fingers on the A-phase incoming line assembly are not coaxial.

2. The line inlet assembly according to claim 1, characterized in that: The inlet contact finger and the inlet blade coaxial therewith are respectively located on the upper and lower sides of the conductive connector.

3. An inlet and outlet circuit assembly, characterized in that: It comprises a housing, an incoming line assembly and an outgoing line assembly as claimed in any one of claims 1 to 2; The side of the housing facing the low-voltage cabinet is provided with an inlet socket and an outlet socket connected to the switch components in the low-voltage cabinet, and the side of the housing away from the low-voltage cabinet is provided with a copper busbar assembly for supplying power to the inlet assembly and an outlet port for supplying power to the electrical equipment; The copper bar assembly includes an A-phase copper bar, a B-phase copper bar and a C-phase copper bar, the incoming line contact finger is connected to the corresponding copper bar in the copper bar assembly, one incoming line blade in the A-phase incoming line assembly, one incoming line blade in the B-phase incoming line assembly and one incoming line blade in the C-phase incoming line assembly are arranged to form a plug of an incoming line socket, and the incoming line blades constituting the same incoming line socket are located on the same side of their respective conductive connectors; The outlet assembly includes an A-phase outlet assembly, a B-phase outlet assembly and a C-phase outlet assembly, each of which includes an outlet blade and an outlet copper piece connected to the outlet blade. One outlet blade in the A-phase outlet assembly, one outlet blade in the B-phase outlet assembly and one outlet blade in the C-phase outlet assembly are arranged to form an insert of an outlet socket, and the outlet blades constituting the same outlet socket are located on the same side of their respective outlet copper pieces, and the outlet copper pieces of the A-phase outlet assembly, the B-phase outlet assembly and the C-phase outlet assembly are arranged at one end away from their outlet blades to form an outlet port.

4. The input and output line circuit assembly according to claim 3, characterized in that: The distance between adjacent incoming line blades in the A-phase incoming line assembly is L1, the distance between adjacent incoming line blades in the B-phase incoming line assembly is L2, and the distance between adjacent incoming line blades in the C-phase incoming line assembly is L3, L1=L2=L3, so that the structures of at least two groups of incoming line sockets formed by the incoming line blades in the A-phase incoming line assembly, the B-phase incoming line assembly and the C-phase incoming line assembly are the same.

5. The input and output line circuit assembly according to claim 4, characterized in that: The three incoming line assemblies are arranged at intervals from top to bottom, and an outgoing line assembly is provided in each interval between adjacent incoming line assemblies, and another outgoing line assembly is located above the top incoming line assembly or below the bottom incoming line assembly.

6. The input and output line circuit assembly according to claim 5, characterized in that: The shell comprises a front cover plate and a rear cover plate which are detachably connected. The rear cover plate is provided with a first placement groove for inserting the conductive connector and a second placement groove for inserting the outlet copper member. The first placement groove and the second placement groove adjacent thereto are arranged in parallel.

7. The input and output line circuit assembly according to claim 6, characterized in that: The incoming and outgoing line circuit assembly comprises a first incoming and outgoing line circuit box and a second outgoing line circuit box arranged side by side, the first incoming and outgoing line circuit box is provided with the incoming line assembly and a group of the outgoing line assemblies, and another group of the outgoing line assemblies is placed in the second outgoing line circuit box, the incoming line assembly is provided with two spaced-apart incoming line blades, the outgoing line blade located in the first incoming and outgoing line circuit box is located between the two incoming line blades, and the outgoing line assembly located in the second outgoing line circuit box and the incoming line assembly adjacent thereto constitute a group of incoming and outgoing line circuits, and the outgoing line assembly located in the first incoming and outgoing line circuit box and another incoming line assembly constitute another group of incoming and outgoing line circuits.

8. A switching unit, characterized in that: It comprises an input and output line circuit assembly as described in any one of claims 1 to 7, a detachably connected panel and a base, and at least two secondary plug-ins, wherein the panel and the base form a box-like structure having a cavity inside, and the input and output line circuit assembly and the secondary plug-ins are respectively arranged in the cavity.

9. The switching unit according to claim 8, characterized in that: A guide pin is provided on the front end surface of the panel, and the outer diameter of the guide pin is matched with the inner diameter of the guide through hole on the low-voltage cabinet.

10. The switching unit according to claim 8, characterized in that: A supporting column is respectively arranged at the upper end and the lower end of the base, and one end of the supporting column away from the base abuts against the panel.

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