Large-current bus wiring terminal

Abstract

Adjacent terminal units form a switching terminal group through connecting conducting strips, two wire inlet terminals of the switching terminal group can be respectively connected to a frequently-used power supply and a standby power supply, and phase lines of the dual power supplies are independently isolated, so that power supply interruption caused by short circuit or mistaken touch in the switching process is avoided. Meanwhile, one or two outgoing line terminals can be flexibly led out from each switching terminal set, power distribution requirements of different loads are met, hardware cost is reduced, the space utilization rate is improved, integrated access of dual-power-supply phase lines is achieved, the number of independent terminals is reduced, the wiring complexity in a power distribution cabinet is reduced, and the installation amount is reduced. And the terminal unit realizes high-current crimping through the switching conductive piece and the wire inlet / outlet fastener, so that the power supply requirements of high-power equipment such as a motor and a transformer in a power distribution cabinet are met, the heating problem caused by contact resistance is reduced, and the service life of the terminal is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of terminal block technology, specifically to a high-current busbar terminal block. Background Technology

[0002] Busbar terminals are a type of terminal block. Their core function is to establish a reliable electrical connection. By tightening screws to crimp wires, the connection is reliable and suitable for high-current scenarios, such as power distribution cabinets and motor control.

[0003] In power distribution cabinets, bus terminals play multiple roles in the power system. Their primary function is as a current transmission hub, connecting the busbar and branch lines to ensure stable power distribution. With increasing reliability requirements in some applications, it is necessary to independently install dual-power transfer switches in the power distribution cabinet to ensure the continuity of power supply to critical loads. When the main power supply fails, it automatically switches to the backup power supply; when the main power supply is restored, it can automatically or manually switch back to the main power supply. With the inclusion of dual-power transfer switches within the power distribution cabinet, the internal wiring also needs adjustment, requiring additional bus terminals for power distribution wiring. Furthermore, some power distribution applications require multiple outputs, further increasing the number of bus terminals. This undoubtedly increases the cost of power configuration, the number of power distribution cabinets installed, and also hinders the integration of electrical components within the power distribution cabinet.

[0004] In view of this, there is an urgent need to design a high-current bus terminal block to cope with the changing power distribution needs of current power distribution cabinets. Summary of the Invention

[0005] To address the aforementioned problems, this utility model provides a high-current busbar terminal block, comprising a terminal base, on which a plurality of terminal units are formed, with partition plates between adjacent terminal units. Each terminal unit contains a transfer cavity, with an inlet cavity and an outlet cavity communicating with the upper and lower ends of the transfer cavity, respectively. A transfer conductive element is provided within the transfer cavity. An inlet terminal and an inlet fastener are connected within the inlet cavity, with the inlet terminal pressed between the inlet fastener and the transfer conductive element. The outlet cavity contains… The device is connected to an outgoing terminal and an outgoing fastener. The outgoing terminal is crimped between the outgoing fastener and the adapter conductive component. Two adjacent terminal units form a switching terminal group. Each switching terminal group includes a connecting conductive sheet. The connecting conductive sheet includes a main body and two crimping portions connected to the side of the main body. A partition notch is provided between the crimping portions. The two crimping portions are respectively connected to the inlet cavity of two adjacent terminal units, and the crimping portions are crimped between the inlet fastener and the adapter conductive component.

[0006] The present invention is further configured such that the partition plate between two terminal units of the same group of switching terminal groups is connected within the partition notch; the partition plate between two adjacent groups of switching terminal groups extends outward to form an outer edge, the outer edge being located between the main body portions of two adjacent connecting conductive sheets.

[0007] The present invention is further configured such that a connection hole is provided on the crimping part, and a wire inlet connection hole is provided on the wire inlet terminal. The wire inlet fastener passes through the wire inlet connection hole and the connection hole in sequence and is connected to the adapter conductive component.

[0008] The present invention is further configured such that the main body is perpendicular to the pressing part.

[0009] The present invention is further configured such that the cross-sectional area of ​​the main body is not less than the cross-sectional area of ​​the pressing part.

[0010] The present invention is further configured such that a wire connection hole is provided on the wire output terminal, and the wire output fastener passes through the wire connection hole and is connected to the adapter conductive component.

[0011] The present invention is further configured such that both the incoming terminal and the outgoing terminal include a fixing part and a wiring part, the fixing part is electrically connected to the adapter conductive component, and the terminal base near the wiring part is a recessed platform.

[0012] The present invention is further configured to include an inlet cover, wherein the inner walls on both sides of the inlet cover are provided with positioning holes, and the outer wall of the terminal unit on the outer side is provided with a positioning block. The inlet cover is connected to the terminal base through the positioning holes and the positioning block.

[0013] The present invention is further configured to include a cable exit plate, wherein the side of the cable exit plate protrudes inward to form a positioning protrusion, and a positioning groove is provided on the partition plate located on both sides of the cable exit cavity. The cable exit plate is connected to the terminal base through the cooperation of the positioning protrusion and the positioning groove.

[0014] The present invention is further configured such that both ends of the terminal base are provided with open mounting grooves.

[0015] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0016] The wiring method for the high-current busbar terminals in this technical solution is as follows: connect the two incoming terminals of each set of switching terminals to the common power phase line and the backup power phase line of the dual power transfer switch respectively. According to the outgoing line requirements of the power supply and distribution situation, one or two outgoing terminals are led out from each set of switching terminals for power distribution and use.

[0017] In this utility model, the high-current busbar terminal block connects adjacent terminal units to form a switching terminal group by connecting conductive plates. The two incoming terminals of the switching terminal group can be connected to the main power supply and the backup power supply respectively. The dual power supply phase lines are independently isolated to avoid power interruption caused by short circuit or accidental contact during the switching process, thereby improving the switching reliability. At the same time, each switching terminal group can flexibly lead out one or two outgoing terminals to meet the power distribution needs of different loads, reduce hardware costs, and improve space utilization.

[0018] This utility model's high-current busbar terminal integrates dual power supply phase lines by connecting conductive plates, reducing the number of independent terminals, lowering the complexity of internal wiring in the distribution cabinet, reducing installation volume, and saving costs. The terminal unit achieves high-current crimping through adapter conductive parts and incoming / outgoing fasteners, meeting the power supply needs of high-power equipment such as motors and transformers in the power distribution cabinet, reducing heat generation problems caused by contact resistance, and extending the service life of the terminals. Attached Figure Description

[0019] Figure 1 This is a perspective view of the busbar terminal block in an embodiment of the present utility model.

[0020] Figure 2 This is a front view of the busbar terminal block in an embodiment of this utility model.

[0021] Figure 3 for Figure 2 Sectional view of AA.

[0022] Figure 4 This is an exploded view of the busbar terminal block in an embodiment of this utility model.

[0023] Figure 5 This is an exploded view of the conductive circuit within the switching terminal group according to an embodiment of this utility model.

[0024] Figure 6 This is a perspective view of the conductive sheet in an embodiment of the present invention.

[0025] Figure 7 This is a perspective view of the inlet and outlet terminals of an embodiment of the present utility model.

[0026] Figure 8 This is a perspective view of the busbar terminal block after removing the cover and sealing plate in an embodiment of this utility model.

[0027] Figure 9 This is a perspective view of the terminal base according to an embodiment of the present utility model.

[0028] Figure 10 This is a schematic diagram of the wiring between the busbar terminals and the three-phase dual power transfer switch in an embodiment of this utility model. Detailed Implementation

[0029] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to fixed connections, integral connections, or detachable connections; they can refer to mechanical connections or electrical connections, or internal connections between two components; they can refer to direct connections or indirect connections through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0032] Combined with appendix Figure 1 To be continued Figure 9 This utility model provides a high-current busbar terminal block, comprising a terminal base 1, on which six terminal units 2 are provided. A partition plate 11 is provided between adjacent terminal units 2. Each terminal unit 2 has a transition cavity 21. The upper and lower ends of the transition cavity 21 are respectively provided with an inlet cavity 22 and an outlet cavity 23 communicating with the transition cavity 21. A transition conductive element 3 is provided within the transition cavity 21. An inlet terminal 4 and an inlet fastener 41 are connected within the inlet cavity 22. The inlet terminal 4 is pressed between the inlet fastener 41 and the transition conductive element 3. The outlet cavity 23 is connected to... There are outgoing terminals 5 and outgoing fasteners 51. The outgoing terminals 5 are crimped between the outgoing fasteners 51 and the adapter conductive member 3. Two adjacent terminal units 2 form a set of switching terminal groups 6. Each switching terminal group 6 includes a connecting conductive piece 7. The connecting conductive piece 7 includes a main body 71 and two crimping parts 72 connected to the side of the main body 71. A partition notch 73 is provided between the crimping parts 72. The two crimping parts 72 are respectively connected to the inlet cavity 22 of the two adjacent terminal units 2, and the crimping parts 72 are crimped between the inlet fasteners 41 and the adapter conductive member 3.

[0033] As attached Figure 1 To be continued Figure 9 The busbar wiring terminals of six terminal units 2 (i.e., three sets of switching terminal groups 6) are used for illustration. However, the technical solution of this embodiment is not a limitation on the protection scope of this utility model. In other embodiments, the terminal units 2 can be set with four or more, selected according to the number of phases of the dual power transfer switch or according to the power distribution needs inside the electrical distribution cabinet.

[0034] In this embodiment, the wiring method of the high current bus terminal is as follows: the two incoming terminals 4 of each set of switching terminal groups 6 are respectively connected to the common power phase line and the backup power phase line of the dual power transfer switch. According to the outgoing line requirements of the power supply and distribution occasion, one or two outgoing terminals 5 are led out from each set of switching terminal groups 6 for power distribution and power consumption.

[0035] In this embodiment, the connecting conductive sheet 7 is connected to the two sets of terminal units 2 to realize the conductive connection between the two adjacent sets of terminal units 2.

[0036] In this embodiment, the incoming and outgoing lines of the same terminal unit 2 are arranged in upper and lower layers, and the electrical transfer is achieved through the connecting conductive element 3, which can effectively reduce the area occupied by the bus terminal in the distribution cabinet.

[0037] In this embodiment, as shown in the appendix Figure 4 , 6 As shown in Figure 9, the partition plate 11 between the two terminal units 2 of the same group of switching terminal groups 6 is connected in the partition notch 73; the partition plate 11 between two adjacent groups of switching terminal groups 6 extends outward to form an outer edge 12, and the outer edge 12 is located between the main body portions 71 of two adjacent connecting conductive sheets 7.

[0038] In this embodiment, as shown in the appendix Figure 4 Appendix Figure 6 and attached Figure 7 As shown, the crimping part 72 has a connection hole 74, the inlet terminal 4 has an inlet connection hole 42, and the inlet fastener 41 passes through the inlet connection hole 42 and the connection hole 74 in sequence to be electrically connected to the adapter conductive part 3.

[0039] In this embodiment, as shown in the appendix Figure 6 As shown, the main body 71 is disposed perpendicular to the crimping part 72.

[0040] In this embodiment, the cross-sectional area of ​​the main body 71 is not less than the cross-sectional area of ​​the crimping part 72 to ensure the reliability of the electrical connection.

[0041] In this embodiment, as shown in the appendix Figure 3 and attached Figure 7 As shown, the output terminal 5 has an output connection hole 52, and the output fastener 51 passes through the output connection hole 52 and is connected to the adapter conductive component 3.

[0042] In this embodiment, as shown in the appendix Figure 3 and attached Figure 8 As shown, the incoming terminal 4 and the outgoing terminal 5 are disposed on both sides of the terminal base 1.

[0043] In this embodiment, as shown in the appendix Figure 3 and attached Figure 7 As shown, the incoming terminal 4 includes an incoming fixing part 43 and an incoming wiring part 44, and the outgoing terminal 5 includes an outgoing fixing part 53 and an outgoing wiring part 54. Both the incoming fixing part 43 and the outgoing fixing part 53 are electrically connected to the adapter conductive member 3. The terminal base 1 is a recessed platform 13 near the incoming wiring part 44 and the outgoing wiring part 54, which reduces the external dimensions of the incoming terminal 4 and the outgoing terminal 5 and improves wiring safety.

[0044] In this embodiment, as shown in the appendix Figure 1 and attached Figure 4 As shown, it also includes an inlet cover 8. The inner walls of both sides of the inlet cover 8 are provided with positioning holes 81, and the outermost outer wall of the terminal unit 2 is provided with a positioning block 14. The inlet cover 8 is connected to the terminal base 1 through the cooperation of the positioning holes 81 and the positioning block 14. The two sides, the rear side and the top surface of the inlet cover 8 are all set as sealing plates.

[0045] In this embodiment, as shown in the appendix Figure 1 and attached Figure 4 As shown, it also includes a cable exit plate 9, the side of which protrudes inward to form a positioning protrusion 91, and positioning grooves 15 are provided on the partition plates 11 located on both sides of the cable exit cavity 23. The cable exit plate 9 is connected to the terminal base 1 through the cooperation of the positioning protrusion 91 and the positioning groove 15.

[0046] In this embodiment, the terminal base 1 has open mounting slots 16 at both ends, which are used for the installation of busbar terminals in the electrical distribution cabinet.

[0047] To better illustrate the wiring method of the busbar terminals, please refer to the attached diagram. Figure 10The following description is provided: The busbar terminal block is equipped with three sets of switching terminal blocks 6, including a first set of switching terminal blocks 61, a second set of switching terminal blocks 62, and a third set of switching terminal blocks 63. The electrical distribution cabinet is equipped with a three-phase dual-power transfer switch 10, which includes a normal circuit breaker group and a standby circuit breaker group. The normal circuit breaker group includes A, B, and C phase circuit breakers, and the standby circuit breaker group includes A', B', and C' phase circuit breakers. The two incoming terminals of the first set of switching terminal blocks 61 are connected to the A phase circuit breaker and the A' phase circuit breaker, respectively. The two incoming terminals of the second set of switching terminal blocks 62 are connected to the B phase circuit breaker and the B' phase circuit breaker, respectively. The two incoming terminals of the third set of switching terminal blocks 63 are connected to the C phase circuit breaker and the C' phase circuit breaker, respectively. The outgoing terminals 5 of the first set of switching terminal blocks 61, the second set of switching terminal blocks 62, and the third set of switching terminal blocks 63 lead out the corresponding number of lines according to the power distribution requirements. At most, only one of the commonly used circuit breaker group and the standby circuit breaker group of the three-phase dual power transfer switch 10 is in the conducting state. When the three-phase dual power transfer switch 10 performs power switching, the subsequent loads connected to each outgoing terminal 5 of the bus terminal can still receive stable power supply.

[0048] In this utility model, the high-current busbar terminal block connects adjacent terminal units 2 to form a switching terminal group 6 by connecting conductive plates 7. The two incoming terminals 4 of the switching terminal group 6 can be connected to the main power supply and the backup power supply respectively. The dual power supply phase lines are independently isolated to avoid power interruption caused by short circuit or accidental contact during the switching process, thereby improving the switching reliability. At the same time, each switching terminal group 6 can flexibly lead out one or two outgoing terminals 5 to meet the power distribution needs of different loads, reduce hardware costs, and improve space utilization.

[0049] This utility model's high-current busbar terminal integrates dual power supply phase lines through connecting conductive sheet 7, reducing the number of independent terminals, lowering the complexity of internal wiring in the distribution cabinet, reducing installation volume, and saving costs. Terminal unit 2 achieves high-current crimping through adapter conductive part 3 and incoming / outgoing fasteners, meeting the power supply needs of high-power equipment such as motors and transformers in the power distribution cabinet, reducing heat generation problems caused by contact resistance, and extending the service life of the terminals.

[0050] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited thereto. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A high current bus terminal comprising a terminal base, characterized in that, The terminal base has a plurality of terminal units, and a partition plate is provided between adjacent terminal units. Each terminal unit has a transfer cavity. The upper and lower ends of the transfer cavity are respectively provided with an inlet cavity and an outlet cavity communicating with the transfer cavity. A transfer conductive element is provided within the transfer cavity. An inlet terminal and an inlet fastener are connected within the inlet cavity, and the inlet terminal is crimped between the inlet fastener and the transfer conductive element. An outlet terminal and an outlet fastener are connected within the outlet cavity, and the outlet terminal is crimped between the outlet fastener and the transfer conductive element. Two adjacent terminal units constitute a switching terminal group. Each switching terminal group includes a connecting conductive sheet. The connecting conductive sheet includes a main body and two crimping portions connected to the side of the main body. A partition notch is provided between the crimping portions. The two crimping portions are respectively connected to the inlet cavities of two adjacent terminal units, and the crimping portions are crimped between the inlet fastener and the transfer conductive element.

2. A high current bus terminal according to claim 1, characterized in that The partition plate between two terminal units of the same group of switching terminal groups is connected within the partition notch; the partition plate between two adjacent groups of switching terminal groups extends outward to form an outer edge, which is located between the main body portions of two adjacent connecting conductive sheets.

3. A high current bus terminal according to claim 2, characterized in that The crimping part has a connection hole, and the inlet terminal has an inlet connection hole. The inlet fastener passes through the inlet connection hole and the connection hole in sequence and connects to the adapter conductive component.

4. A high current bus terminal according to claim 1, wherein, The main body is arranged perpendicular to the crimping part.

5. A high current bus terminal according to claim 1, wherein, The cross-sectional area of ​​the main body is not less than the cross-sectional area of ​​the crimping part.

6. A high current bus terminal according to claim 1, wherein, The outgoing terminal has an outgoing connection hole, and the outgoing fastener passes through the outgoing connection hole and connects to the adapter conductive component.

7. A high current bus terminal according to claim 1 wherein, Both the incoming terminal and the outgoing terminal include a fixing part and a wiring part. The fixing part is electrically connected to the adapter conductive component, and the terminal base near the wiring part is a recessed platform.

8. A high current bus terminal according to any one of claims 1 to 7, characterized in that It also includes an inlet cover, the inner walls of both sides of the inlet cover are provided with positioning holes, and the outer wall of the terminal unit is provided with a positioning block. The inlet cover is connected to the terminal base through the positioning holes and the positioning block.

9. A high current bus terminal according to any one of claims 1 to 7, characterized in that It also includes a cable exit plate, the side of which protrudes inward to form a positioning protrusion, and positioning grooves are provided on the partition plates located on both sides of the cable exit cavity. The cable exit plate is connected to the terminal base through the cooperation of the positioning protrusion and the positioning groove.

10. A high current bus terminal according to any one of claims 1 to 7, characterized in that The terminal base has open mounting slots at both ends.

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