Copper bar lap joint structure for miniaturized drawer cabinet
By adjusting the layout of the copper busbar overlap structure and adopting the overlapping connection of the three-phase lower lead busbar and the transfer busbar, the heat dissipation and space utilization problems of the miniaturized electrical cabinet are solved, and higher heat dissipation performance and lower manufacturing costs are achieved.
Patent Information
- Application Number
- CN202422915816.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-11-28
AI Technical Summary
The traditional copper busbar overlap structure cannot meet the dual requirements of space utilization and electrical performance of miniaturized electrical cabinets, especially the insufficient heat dissipation performance and high manufacturing cost.
A new overlapping structure of three-phase lower lead-in busbars and three-phase transfer busbars is adopted. By adjusting the height and arrangement of the overlapping points, the T-shaped head is eliminated and a double-piece copper busbar is used for overlapping connection, which increases the heat dissipation space and reduces the manufacturing difficulty.
The heat dissipation performance and conductive reliability of the miniaturized drawer cabinet are improved, and the manufacturing difficulty and manufacturing cost are reduced.
Smart Images
Figure CN223462595U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of copper bar lap joint structure for miniaturization drawer cabinet. BACKGROUND
[0002] With the continuous development of modern electrical equipment, low-voltage electrical cabinet is more and more widely used, especially in the field of industrial automation, building electrical, photovoltaic power generation, the demand for low-voltage electrical cabinet continues to grow. In order to meet the market demand for small, intelligent and high-performance equipment, the design and manufacture of electrical cabinet also faces new challenges. Small electrical cabinet not only needs to accommodate more electrical components in limited space, but also must ensure good heat dissipation performance and electrical safety.
[0003] An important factor restricting the development of drawer cabinet towards miniaturization in the past is the copper bar lap joint structure, which directly affects the heat dissipation performance of the drawer cabinet, and the heat dissipation performance directly affects the safety performance of the drawer cabinet. The drawer cabinet includes a three-phase main busbar down lead and a three-phase vertical adapter, and the lap joint structure between the down lead and the adapter in the past needs to use a T-shaped head to ensure the lap joint area. The use of T-shaped head occupies a large space in the solid, and the use of T-shaped head in the copper bar lap joint of small drawer cabinet will directly affect the heat dissipation of the drawer cabinet. Secondly, the T-shaped head scheme has high manufacturing cost, and the connection structure is complex and difficult to connect.
[0004] In summary, the traditional copper bar lap joint structure is relatively simple in structure and cannot fully meet the dual requirements of space utilization and electrical performance of small electrical cabinet. INVENTION CONTENTS
[0005] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, provide a copper bar lap joint structure for miniaturization drawer cabinet, and solve the technical problem that the copper bar lap joint structure in the past is relatively simple and cannot fully meet the requirements of space utilization and electrical performance of small electrical cabinet.
[0006] The technical solution adopted by the utility model to solve the technical problem is:
[0007] A copper bar lap joint structure for miniaturization drawer cabinet is provided, comprising
[0008] A cabinet body is provided, and a three-phase down lead and a three-phase adapter are arranged in the cabinet body, and the lower end of the three-phase down lead is connected to the upper end of the three-phase adapter.
[0009] The wide surface of the three-phase down lead is arranged in the front-rear direction, and the wide surface of the three-phase adapter is arranged in the left-right direction.
[0010] The lower end of the three-phase down lead forms an upper lap joint edge of horizontal structure, the upper end of the three-phase adapter forms an upper lap joint edge of horizontal structure, and the upper lap joint edge and the lower lap joint edge of each phase are lap jointed.
[0011] The B-phase overlapping point is not at the same height as the A-phase overlapping point and the C-phase overlapping point.
[0012] Further, the A-phase overlapping point and the C-phase overlapping point are at the same height, and the B-phase overlapping point is lower than the A-phase overlapping point and the C-phase overlapping point.
[0013] Further, each phase lower leading row includes two pieces, and each phase switching row includes two pieces.
[0014] When the switching row and the lower leading row of each phase are overlapped, the two pieces of the lower leading row and the two pieces of the switching row are overlapped together.
[0015] Further, a plurality of connecting bolts pass through the upper overlapping edge and the lower overlapping edge of each phase to fasten the upper overlapping edge and the lower overlapping edge together.
[0016] Further, the overlapping edge end of the three-phase lower leading row is arranged towards the front.
[0017] The A-phase lower leading row overlapping edge and the C-phase lower leading row overlapping edge are distributed in left-right symmetry, and the two sides of the overlapping edges leave a heat dissipation space for the B-phase overlapping point.
[0018] The two overlapping edge end heads of the B-phase lower leading row are opposite to each other, and the two overlapping edges are overlapped together.
[0019] The beneficial effects of the utility model are:
[0020] The T-shaped head is saved, and the overlapping edge can be obtained only by bending the existing copper row, the manufacturing difficulty is reduced, the manufacturing cost is reduced, double copper rows are used for each phase, and the contact area is improved. The B-phase overlapping point is lower than the A-phase overlapping points and the C-phase overlapping points on both sides, and the heat dissipation space is improved. DRAWINGS
[0021] The utility model will be further described below in combination with the drawings.
[0022] Figure 1 It is a small-sized drawer cabinet schematic diagram;
[0023] Figure 2 It is a copper row overlapping structure schematic diagram for a small-sized drawer cabinet;
[0024] Figure 3 It is a three-phase lower leading row schematic diagram;
[0025] Figure 4 It is a three-phase switching row schematic diagram;
[0026] Among them,
[0027] 1, cabinet body;
[0028] 21, A-phase lower lead row, 22, B-phase lower lead row, 23, C-phase lower lead row;
[0029] 31, A-phase transition row, 32, B-phase transition row, 33, C-phase transition row;
[0030] 41, A-phase overlap point, 42, B-phase overlap point, 43, C-phase overlap point. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model more clear, the technical scheme of the utility model will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0032] The application provides a miniaturized copper bar overlap structure for drawer cabinet, which is described in detail below. It should be noted that the description order of the following embodiments is not limited as the preferred order of the embodiments of the application. In the following embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.
[0033] To solve the technical problem that the copper bar overlap structure in the prior art is relatively single and cannot fully meet the space utilization and electrical performance of miniaturized electrical cabinet, an embodiment of the application provides a miniaturized copper bar overlap structure for drawer cabinet. The following is described in detail.
[0034] As shown in FIG. 1, a miniaturized drawer cabinet includes a cabinet body 1, three-phase lower lead rows and three-phase transition rows are arranged in the cabinet body 1, the lower end of the three-phase lower lead rows is connected to the upper end of the three-phase transition rows; Figure 1
[0035] The three-phase lower lead rows and the three-phase transition rows are copper bars. The three-phase lower lead rows and the three-phase transition rows are connected by overlap connection.
[0036] The three-phase lower lead rows include an A-phase lower lead row 21, a B-phase lower lead row 22 and a C-phase lower lead row 23.
[0037] The three-phase transition rows include an A-phase transition row 31, a B-phase transition row 32 and a C-phase transition row 33.
[0038] In this embodiment, bus clamps are arranged between the A-phase lower lead row 21, the B-phase lower lead row 22 and the C-phase lower lead row 23.
[0039] Bus clamps are also arranged between the A-phase transition row 31, the B-phase transition row 32 and the C-phase transition row 33.
[0040] The bus bar is used to improve the stability of the copper bar in the cabinet body 1.
[0041] As shown in Figure 2 , the overlapping structure between the three-phase downward leading bars and the three-phase transition bars: the wide surfaces of the A-phase downward leading bar 21, the B-phase downward leading bar 22, and the C-phase downward leading bar 23 are arranged in the front-back direction, and the wide surfaces of the A-phase transition bar 31, the B-phase transition bar 32, and the C-phase transition bar 33 are arranged in the left-right direction.
[0042] In this embodiment, for the front-back and left-right directions, refer to Figure 2 .
[0043] As shown in Figure 3 and Figure 4 , the lower ends of the A-phase downward leading bar 21, the B-phase downward leading bar 22, and the C-phase downward leading bar 23 form upper overlapping edges of horizontal structures, and the upper ends of the A-phase transition bar 31, the B-phase transition bar 32, and the C-phase transition bar 33 form upper overlapping edges of horizontal structures. The upper overlapping edges and the lower overlapping edges of each phase overlap, that is, the A-phase overlapping point 41, the B-phase overlapping point 42, and the C-phase overlapping point 43 are formed.
[0044] The B-phase overlapping point 42 is not at the same height as the A-phase overlapping point 41 and the C-phase overlapping point 43.
[0045] The B-phase overlapping point 42 is higher than the A-phase overlapping point 41 and the C-phase overlapping point 43, or the B-phase overlapping point 42 can be lower than the A-phase overlapping point 41 and the C-phase overlapping point 43.
[0046] In this embodiment, the overlapping point refers to the connection point between the downward leading bar and the transition bar.
[0047] Through the height difference between the B-phase overlapping point 42 and the A-phase overlapping point 41 and the C-phase overlapping point 43, more heat dissipation space is formed in the height direction of the three overlapping points, which facilitates the heat dissipation of the copper bars of the overlapping points.
[0048] Specifically, as a preferred embodiment of this embodiment, as shown in Figure 2 , the A-phase overlapping point 41 and the C-phase overlapping point 43 are at the same height, and the B-phase overlapping point 42 is lower than the A-phase overlapping point 41 and the C-phase overlapping point 43.
[0049] As shown in Figure 2 and Figure 4 , the upper ends of the A-phase transition bar 31 and the C-phase transition bar 33 form two obtuse angle bends, and through the two bends, the distance between the B-phase overlapping point 42 and the A-phase transition bar 31 and the C-phase transition bar 33 on both sides is expanded, and the heat dissipation space of the B-phase overlapping point 42 is increased.
[0050] Specifically, as a preferred embodiment of this embodiment, as shown in Figure 2 ,Figure 3 and 4 As shown, each phase lower lead bar includes two pieces, and each phase transfer bar includes two pieces;
[0051] When each phase transfer bar and the lower lead bar are overlapped, the two lower lead bars and the two transfer bars are overlapped together.
[0052] That is, four copper bars are stacked together at the overlapping joints, and multiple copper bars are overlapped and connected to increase the contact area and improve the conductive reliability.
[0053] Specifically, as a preferred implementation of this embodiment, Figure 2 、 Figure 3 and 4 As shown, a plurality of connecting bolts pass through the upper lap edge and the lower lap edge of each phase to fasten the upper lap edge and the lower lap edge together.
[0054] Specifically, each overlapping point includes four connecting bolts, and the upper overlapping edge and the lower overlapping edge are fastened together by the connecting bolts.
[0055] Specifically, as a preferred implementation of this embodiment, Figure 2 、 Figure 3 and 4 As shown, the overlapping ends of the A-phase lower lead bar 21, the B-phase lower lead bar 22, and the C-phase lower lead bar 23 are all arranged forward;
[0056] The overlapped edges of the A-phase lower lead bar 21 and the C-phase lower lead bar 23 are symmetrically distributed, and a heat dissipation space for the B-phase overlap point 42 is left between the overlapped edges on both sides;
[0057] The two overlapping ends of the B-phase lower lead bar 22 face oppositely, and the two overlapping edges overlap each other vertically.
[0058] The copper busbar overlap structure between the three-phase lower lead and the three-phase transfer busbar in this utility model eliminates the need for a T-shaped connector. The overlapped edge is created by simply bending the existing copper busbar, reducing manufacturing difficulty and cost. Each phase utilizes a double-piece copper busbar, increasing the contact area. The B-phase overlap point 42 is lower than the A-phase overlap point 41 and the C-phase overlap point 43 on either side, increasing heat dissipation space.
[0059] like Figure 3 As shown, the width of the three-phase lower copper bars is arranged front to back, so that the slot opening between the two lower copper bars of each phase is a left-right structure, and the generated heat is dissipated in the left and right directions.
[0060] like Figure 4 As shown, the wide sides of the three-phase transfer rows are arranged on the left and right, so that the slot openings between the two rows of transfer rows of each phase are a front-to-back structure, and the generated heat is dissipated in the front-to-back direction.
[0061] The copper bar lap joint structure can fully dissipate heat in the front, rear, left and right directions, and can be installed in a miniaturized drawer cabinet to ensure heat dissipation of the copper bar in the miniaturized drawer cabinet.
[0062] The various devices (parts without specific structure) selected in the application are all general standard parts or parts known to those skilled in the art, and their structures and principles can be known by those skilled in the art through technical manuals or through conventional experimental methods.
[0063] In the description of the embodiments of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0064] In the description of the utility model, it should be explained that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0065] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division, and there can be another division manner in actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some communication interfaces, devices or units, and can be electrical, mechanical or other forms.
[0066] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or distributed on multiple network units. According to actual needs, part or all of the units can be selected to achieve the purpose of the embodiment scheme.
[0067] In addition, each function unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit.
[0068] The above is the ideal embodiment according to the present application, and the related personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and the technical scope must be determined according to the scope of claims.
Claims
1. A copper busbar lap joint structure for a miniaturized drawer cabinet, characterized in that: The utility model relates to a cabinet copper bar joint structure of small-sized drawer cabinet The cabinet (1) is internally provided with three-phase down lead rows and three-phase switching rows, the lower end of the three-phase down lead rows is connected with the upper end of the three-phase switching rows; The wide surface of the three-phase down lead rows is arranged in the front-back direction, and the wide surface of the three-phase switching rows is arranged in the left-right direction; The lower end of the three-phase down lead rows forms an upper lap joint edge of horizontal structure, the upper end of the three-phase switching rows forms an upper lap joint edge of horizontal structure, and the upper lap joint edge and the lower lap joint edge of each phase are lap jointed; The B-phase lap joint point (42) is not at the same height with the A-phase lap joint point (41) and the C-phase lap joint point (43).
2. The cabinet copper bar joint structure of small-sized drawer cabinet according to claim 1, characterized in that The A-phase lap joint point (41) and the C-phase lap joint point (43) are at the same height, and the B-phase lap joint point (42) is lower than the A-phase lap joint point (41) and the C-phase lap joint point (43).
3. The cabinet copper bar joint structure of small-sized drawer cabinet according to claim 2, characterized in that Each phase down lead row includes two pieces, and each phase switching row includes two pieces; When the switching row and the down lead row of each phase are lap jointed, the two pieces of down lead row and the two pieces of switching row are overlapped together.
4. The cabinet copper bar joint structure of small-sized drawer cabinet according to claim 1, characterized in that A plurality of connecting bolts pass through the upper lap joint edge and the lower lap joint edge of each phase to fasten the upper lap joint edge and the lower lap joint edge together.
5. The cabinet copper bar joint structure of small-sized drawer cabinet according to claim 3, characterized in that The joint edge end of the three-phase down lead row is arranged towards the front; The joint edge between the A-phase down lead row (21) and the C-phase down lead row (23) is distributed in left-right symmetry, and the heat dissipation space of the B-phase lap joint point (42) is left between the two joint edges; The two joint edge ends of the B-phase down lead row (22) are towards opposite directions, and the two joint edges are overlapped together upwards and downwards.