Secondary circuit wiring terminal of a universal circuit breaker

Abstract

The application relates to the technical field of electrical connection devices, in particular to a secondary circuit wiring terminal of a universal circuit breaker. The secondary circuit wiring terminal comprises a mounting seat, a first group of wiring terminals, a second group of wiring terminals and an insulation protection structure. The mounting seat is divided into two groups of mounting cavities through an intermediate partition plate, effectively improving the insulation between the first wiring terminals and the second wiring terminals. A partition plate is arranged between adjacent mounting cavities, enhancing the electrical insulation between adjacent wiring terminals in the same group. The wiring terminals of the first wiring terminals and the second wiring terminals are respectively exposed to corresponding wiring grooves, facilitating the connection of external wires. The insulation protection structure completely shields the live parts of the wiring terminals in the first direction through the cooperation of a first protection part, a second protection part, a third protection part, a partition plate and a wall plate, prevents the live parts from being touched by operators, significantly reduces the risk of electric shock and improves the operation safety. The structure has good internal insulation, wiring convenience and high safety protection performance.

Description

Technical Field

[0001] This application relates to the field of electrical connection device technology, and in particular to a secondary circuit terminal block for a universal circuit breaker. Background Technology

[0002] Universal circuit breakers are typically used as main switches or critical branch circuits in low-voltage power distribution systems, possessing advanced control, protection, and monitoring functions. The main circuit of a universal circuit breaker is responsible for power transmission, while the secondary terminals are responsible for signal transmission and command reception, enabling operators to remotely or automatically control the circuit breaker and monitor its operational status in real time. However, existing universal circuit breakers suffer from poor internal insulation and exposed live parts in their secondary circuit terminals, posing a potential threat to operator safety. Utility Model Content

[0003] This application provides a secondary circuit terminal block for a universal circuit breaker, which has good insulation protection and can reduce the risk of electric shock to operators.

[0004] The technical solution of this application is as follows: This application provides a secondary circuit terminal block for a universal circuit breaker, including a mounting base, a first set of terminals, a second set of terminals, and an insulating protective structure.

[0005] The mounting base includes a mounting plate, a middle partition, and a front wall plate arranged along a first direction, with the middle partition located between the mounting plate and the front wall plate.

[0006] The mounting base also includes multiple first partitions and multiple second partitions. The multiple first partitions are arranged along the second direction and are disposed between the mounting plate and the middle partition. Two adjacent first partitions, the mounting plate and the middle partition form a first mounting cavity.

[0007] Multiple second partitions are arranged along a second direction and are disposed between the middle partition and the front wall panel. Two adjacent second partitions, the middle partition, and the front wall panel form a second mounting cavity.

[0008] Along the third direction, the two ends of the first partition and the mounting plate are located outside the middle partition, the second partition and the front wall plate, forming a first wiring groove and a second wiring groove at both ends of the first mounting cavity.

[0009] Along the third direction, the two ends of the second partition and the middle partition are located outside the front wall panel, forming the third wiring groove and the fourth wiring groove at both ends of the second mounting cavity.

[0010] The first set of terminals includes multiple first terminals, which are correspondingly installed in multiple first mounting cavities. Along a third direction, each of the first terminals has a first terminal and a second terminal at its two ends, with the first terminal located in a first wiring slot and the second terminal located in a second wiring slot.

[0011] The second set of terminals includes multiple second terminals, which are correspondingly installed in multiple second mounting cavities. Along a third direction, each end of a second terminal is provided with a third terminal and a fourth terminal, with the third terminal located in a third wiring slot and the fourth terminal located in a fourth wiring slot.

[0012] The insulating protective structure includes a first protective part, a second protective part, and a third protective part. Along a first direction, the first protective part covers the second terminal of the first group of terminals and the fourth terminal of the second group of terminals. The second protective part covers the first terminal of the first group of terminals. The third protective part covers the third terminal of the second group of terminals. The first, second, and third directions are perpendicular to each other.

[0013] Based on the secondary circuit terminal block provided in this application, the mounting base includes two sets of mounting cavities, separated by a middle partition. This enhances the insulation between the first terminal block in the first set of mounting cavities and the second terminal block in the second set of mounting cavities. Adjacent first mounting cavities are separated by a first partition, further enhancing the insulation between the first terminals in adjacent first mounting cavities. Adjacent second mounting cavities are separated by a second partition, enhancing the insulation between the second terminals in adjacent second mounting cavities.

[0014] The first terminal of the first terminal is located in the first wiring slot, the second terminal is located in the second wiring slot, the third terminal of the second terminal is located in the third wiring slot, and the fourth terminal is located in the fourth wiring slot. This facilitates the electrical connection of the first terminal, the second terminal and the external wires.

[0015] The insulating protective structure includes a first protective part, a second protective part, and a third protective part. In the first direction, the first terminal of the first set of terminals is protected by the second protective part, the second terminal is protected by the first protective part, and the portion between the first and second terminals is protected by an intermediate partition. Thus, in the first direction, with the protective structure in place, the operator cannot access the first terminal. Similarly, in the first direction, the third terminal of the second set of terminals is protected by the third protective part, the fourth terminal is protected by the first protective part, and the portion between the third and fourth terminals is protected by a front panel. Thus, in the first direction, with the protective structure in place, the operator cannot access the second terminal. This reduces the risk of electric shock to the operator and improves operational safety.

[0016] In summary, the secondary circuit terminal block provided in this application has good internal insulation, is easy to connect to external wires, and has high operational safety, which can reduce the risk of electric shock to operators.

[0017] In one possible design, the first terminal is a screw crimp terminal, including a first terminal block and a first screw.

[0018] The first terminal block is provided with a first screw hole, the axis of the first screw hole is parallel to the first direction, the first screw is adapted to the first screw hole and is inserted into the first screw hole from the side of the first terminal block away from the mounting plate, and the position between the head of the first screw and the first terminal block is used to connect external wires.

[0019] The second protective part includes a first protective plate, a second protective plate, a first side plate, and a second side plate connected to each other. Along a first direction, the first protective plate is located on the side of the plurality of first partitions away from the mounting plate, and is used to cover the first terminal in the first direction. Along a third direction, the second protective plate is located at one end of the plurality of first partitions forming a first wiring groove, and is used to cover the first terminal in the third direction, while exposing the wiring portion between the head of the first screw and the first terminal block.

[0020] Along the second direction, a first side plate is connected to one end of the first protective plate and the second protective plate, and the first side plate is located on the side of the first first partition away from the adjacent first partition, and is fixedly connected to the first first partition. A second side plate is connected to the other end of the first protective plate and the second protective plate, and the second side plate is located on the side of the last first partition away from the adjacent first partition, and is fixedly connected to the last first partition.

[0021] With the secondary circuit terminal provided in this embodiment, after the second protective part is provided, the first protective plate can prevent the operator from touching the first terminal when operating other parts of the circuit breaker in the first direction, thereby improving the operator's safety. The second protective plate covers the first terminal in the third direction, which reduces the amount of dust and foreign objects falling into the first wiring groove and enhances the working reliability of the first terminal. The second protective plate exposes the wiring part between the head of the first screw and the first terminal plate, which facilitates the direct routing of wires to the outside of the secondary terminal. The second protective part is fixedly connected to the mounting base by means of the first side plate and the second side plate. This structure can be integrally molded by injection molding, which is easy to implement.

[0022] In one possible design, a first snap-fit ​​block is provided on the side of the first side plate near the first first partition, and a first snap-fit ​​groove adapted to the first snap-fit ​​block is provided on the first first partition. A second snap-fit ​​block is provided on the side of the second side plate near the last first partition, and a second snap-fit ​​groove adapted to the second snap-fit ​​block is provided on the last first partition.

[0023] The second protective part engages with the mounting base through the cooperation of the first locking block and the first locking slot, and the cooperation of the second locking block and the second locking slot.

[0024] The secondary circuit wiring terminal provided by this embodiment allows the second protective part to be snapped into the mounting base, making it easy to install and disassemble.

[0025] In one possible design, the first snap-fit ​​block has a first guide ramp, and the second snap-fit ​​block has a second guide ramp.

[0026] With the secondary circuit wiring terminal provided in this embodiment, the first snap-fit ​​block slides along the side wall of the first first partition to the first snap-fit ​​groove under the guidance of the first guide slope, and the second snap-fit ​​block slides along the side wall of the last first partition to the second snap-fit ​​groove under the guidance of the second guide slope. Therefore, the provision of the first guide slope and the second guide slope makes the installation of the second protective part easier.

[0027] In one possible design, the first side plate is provided with a first lug on the side away from the first first partition, and the second side plate is provided with a second lug on the side away from the last first partition.

[0028] With the secondary circuit terminal provided by this embodiment, when it is necessary to disassemble the second protective part, the first lug and the second lug can be used as handles. The first lug and the second lug can be pried toward the side away from each other, and the first locking block can be easily removed from the first locking groove, and the second locking block can be easily removed from the second locking groove, which facilitates the disassembly of the second protective part.

[0029] In one possible design, the third terminal is also a screw crimp terminal, including the second terminal block and the second screw.

[0030] The second terminal block is provided with a second screw hole, the axis of which is parallel to the first direction. The second screw is adapted to the second screw hole and is inserted into the second screw hole from the side of the second terminal block away from the mounting plate. The position between the head of the second screw and the terminal block is used to connect external wires.

[0031] The third protective section includes a third protective plate, a fourth protective plate, a third side plate, and a fourth side plate connected together. Along the first direction, the third protective plate is located on the side of the plurality of second partitions away from the mounting plate, and is used to cover the third terminal in the first direction. Along the third direction, the fourth protective plate is located at one end of the plurality of second partitions forming the third wiring groove, and is used to cover the third terminal in the third direction, exposing the wiring portion between the head of the second screw and the second terminal block.

[0032] Along the second direction, the third side plate is connected to one end of the third and fourth protective plates, and is located on the side of the first second partition away from the adjacent second partition, and is fixedly connected to the first second partition. The fourth side plate is connected to the other end of the third and fourth protective plates, and is located on the side of the last second partition away from the adjacent second partition, and is fixedly connected to the last second partition.

[0033] By tightening the second screw from the side of the front panel away from the mounting plate using the secondary circuit terminal provided in this embodiment, the third terminal of the second terminal can be electrically connected to an external wire. With the third protective section provided, the third protective plate can prevent operators from touching the third terminal when operating other parts of the circuit breaker in the first direction, thereby improving operator safety. The fourth protective plate covers the third terminal in the third direction, reducing the amount of dust and foreign matter falling into the third wiring slot and enhancing the operational reliability of the third terminal. The fourth protective plate exposes the wiring area between the head of the second screw and the second terminal plate, facilitating direct routing of wires to the outside of the secondary terminal. The third protective section is fixedly connected to the mounting base via the third and fourth side plates. This structure can be integrally molded by injection molding, making it easy to implement.

[0034] In one possible design, a third snap-fit ​​block is provided on the side of the third side plate near the first second partition, and a third snap-fit ​​groove adapted to the third snap-fit ​​block is provided on the first second partition. A fourth snap-fit ​​block is provided on the side of the fourth side plate near the last second partition, and a fourth snap-fit ​​groove adapted to the fourth snap-fit ​​block is provided on the last second partition.

[0035] The third protective unit engages with the mounting base through the cooperation of the third locking block and the third locking slot, and the cooperation of the fourth locking block and the fourth locking slot.

[0036] The secondary circuit wiring terminal provided by this embodiment allows the third protective part to be snapped into the mounting base, making it easy to install and disassemble.

[0037] In one possible design, the third snap-fit ​​block has a third guide ramp, and the fourth snap-fit ​​block has a fourth guide ramp. This makes the installation of the third protective unit easier.

[0038] In one possible design, the third side plate is provided with a third lug on the side away from the first second partition, and the fourth side plate is provided with a fourth lug on the side away from the last second partition.

[0039] With the secondary circuit terminal provided by this embodiment, when it is necessary to disassemble the third protective part, the third lug and the fourth lug can be used as handles. By prying the third lug and the fourth lug toward the side away from each other, the third locking block can be easily removed from the third locking slot, and the fourth locking block can be easily removed from the fourth locking slot, which facilitates the disassembly of the third protective part.

[0040] In one possible design, the insulation protection structure also includes a fourth protection section and a fifth protection section.

[0041] The fourth protective part includes one or more first top covers. Along a third direction, the first top cover is disposed at the end of the first wiring groove away from the second wiring groove. Along a first direction, the first top cover is disposed on the side of the mounting plate near the middle partition and extends from the mounting plate to the first wiring plate, with the wiring portion of the first wiring terminal exposed between the first top cover and the first protective plate. The fifth protective section includes one or more second top covers. Along the third direction, the second top cover is disposed at the end of the third wiring groove away from the fourth wiring groove. Along the first direction, the second top cover is disposed on the side of the intermediate partition near the front wall panel and extends from the intermediate partition to the second wiring plate, with the wiring portion of the third wiring terminal exposed between the second top cover and the third protective plate.

[0042] The secondary circuit terminal block provided by this embodiment not only prevents accidental contact by operators in the first direction, reducing safety risks, but also, in the third direction, ensures that the wiring part is fully exposed for operation while shielding other live parts, improving operational safety. It also prevents foreign objects (such as tools or metal shavings) from falling into the secondary circuit terminal block and causing a short circuit. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the overall structure of the secondary circuit wiring terminal provided in the embodiment of this application.

[0044] Figure 2 This is a schematic diagram of the secondary wiring terminals with the protective structure removed.

[0045] Figure 3 for Figure 1 , Figure 2 A schematic diagram of a mounting base.

[0046] Figure 4 This is a schematic diagram of the structure of a first terminal block provided in an embodiment of this application.

[0047] Figure 5 This is a schematic diagram of a second protective part provided in an embodiment of this application.

[0048] Figure 6 for Figure 5 Top view.

[0049] Figure 7 This is a schematic diagram of the structure of a second terminal block provided in an embodiment of this application.

[0050] Figure 8 This is a schematic diagram of a third protective part provided in an embodiment of this application.

[0051] Figure 9 for Figure 8 Top view.

[0052] Figure 10 for Figure 1 A top-view structural diagram.

[0053] Figure 11 for Figure 10 Enlarged view of point A in the middle.

[0054] Figure 12 for Figure 10 Enlarged view of point B in the middle.

[0055] Figure 13 This is a schematic diagram of the combined structure of the second protective part and the third protective part provided in the embodiments of this application.

[0056] The attached figures are labeled as follows: 11. Mounting base; 111. Mounting plate; 113. Front wall panel; 114. First partition; 1141. First snap-fit ​​groove; 115. Second partition; 1151. Third snap-fit ​​groove; 116. First wiring groove; 117. Second wiring groove; 118. Third wiring groove; 119. Fourth wiring groove; 12. First terminal block; 121. First terminal; 1211. First terminal block; 12111. First screw hole; 1212. First screw; 122. Second terminal; 13. Second terminal block; 131. Third terminal block; 1311. Second terminal block; 13111. Second screw hole; 1312. Second screw; 132. Fourth terminal block; 14. First protective part; 15. Second protective part; 151. First protective plate; 1511. First operating hole; 152. Second protective plate; 153. First side plate; 1531. First snap-fit ​​block; 15311. First guide slope; 1532. First lug; 154. Second side plate; 1541. Second snap-fit ​​block; 15411. Second guide slope; 1542. Second lug; 16. Third protective section; 161. Third protective plate; 1611. Second operating hole; 162. Fourth protective plate; 163. Third side plate; 1631. Third snap-fit ​​block; 16311. Third guide ramp; 1632. Third lug; 164. Fourth side plate; 1641. Fourth snap-fit ​​block; 16411. Fourth guide ramp; 1642. Fourth lug; 17. Fourth protective section; 171. First top cover; 18. Fifth protective section; 181. Second top cover; 21. External conductors; D1, First Direction; D2, Second Direction; D3, Third Direction. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and drawings of this application are intended to cover non-exclusive inclusion.

[0059] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0060] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0061] In the description of this application, unless otherwise stated, "multiple" means two or more (including two).

[0062] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection. A physical connection can be a fixed connection, such as a connection secured by spacers, screws, bolts, or other spacers. A physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection. A physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0063] The present application will be described in detail below with reference to the accompanying drawings.

[0064] Figure 1 This is a schematic diagram of the overall structure of the secondary circuit wiring terminal provided in an embodiment of this application. Figure 2 This is a structural diagram of the secondary wiring terminals without the protective structure. Figure 3 for Figure 1 , Figure 2 A schematic diagram of one structure of the mounting base 11.

[0065] Please refer to Figure 1 , Figure 2 and Figure 3 The secondary circuit terminals of the universal circuit breaker provided in this application include a mounting base 11, a first set of terminals, a second set of terminals, and a protective structure.

[0066] The mounting base 11 includes a mounting plate 111, a middle partition plate, and a front wall plate 113 arranged along the first direction D1, with the middle partition plate located between the mounting plate 111 and the front wall plate 113.

[0067] The mounting base 11 also includes a plurality of first partitions 114 and a plurality of second partitions 115. The plurality of first partitions 114 are arranged along the second direction D2 and are disposed between the mounting plate 111 and the middle partition. Two adjacent first partitions 114, the mounting plate 111 and the middle partition form a first mounting cavity.

[0068] Multiple second partitions 115 are arranged along the second direction D2 and are disposed between the middle partition and the front wall panel 113. Two adjacent second partitions 115, the middle partition and the front wall panel 113 form a second mounting cavity.

[0069] Along the third direction D3, the two ends of the first partition 114 and the mounting plate 111 are located outside the middle partition, the second partition 115 and the front wall plate 113, forming a first wiring groove 116 and a second wiring groove 117 at both ends of the first mounting cavity.

[0070] Along the third direction D3, the two ends of the second partition 115 and the middle partition are located outside the front wall panel 113, forming the third wiring groove 118 and the fourth wiring groove 119 at both ends of the second mounting cavity.

[0071] The first set of terminals includes multiple first terminals 12, which are installed in multiple first mounting cavities. Along the third direction D3, each of the two ends of the first terminal 12 is provided with a first terminal 121 and a second terminal 122, with the first terminal 121 located at the first wiring groove 116 and the second terminal 122 located at the second wiring groove 117.

[0072] The second set of terminals includes multiple second terminals 13, which are installed in multiple second mounting cavities. Along the third direction D3, each end of the second terminal 13 is provided with a third terminal 131 and a fourth terminal 132. The third terminal 131 is located at the third wiring groove 118, and the fourth terminal 132 is located at the fourth wiring groove 119.

[0073] The insulating protective structure includes a first protective part 14, a second protective part 15, and a third protective part 16. Along the first direction D1, the first protective part 14 covers the second terminal 122 of the first group of terminals and the fourth terminal 132 of the second group of terminals. The second protective part 15 covers the first terminal 121 of the first group of terminals. The third protective part 16 covers the third terminal 131 of the second group of terminals. The first direction D1, the second direction D2, and the third direction D3 are perpendicular to each other.

[0074] Specifically, please combine Figure 2 and Figure 3In this application, the mounting base 11 includes two sets of mounting cavities, which are separated by a middle partition. This enhances the insulation between the first terminal 12 in the first set of mounting cavities and the second terminal 13 in the second set of mounting cavities.

[0075] Two adjacent first mounting cavities are separated by a first partition 114, which enhances the insulation between the first terminals 12 in the two adjacent first mounting cavities. Two adjacent second mounting cavities are separated by a second partition 115, which enhances the insulation between the second terminals 13 in the two adjacent second mounting cavities.

[0076] Please continue to refer to this. Figure 2 and Figure 3 Along the third direction D3, the two ends of the first partition 114 and the mounting plate 111 are located outside the middle partition, the second partition 115 and the front wall plate 113, forming a first wiring groove 116 and a second wiring groove 117 at both ends of the first mounting cavity. The first terminal 121 of the first terminal 12 is located at the first wiring groove 116, and the second terminal 122 is located at the second wiring groove 117, facilitating electrical connection with the external wire 21.

[0077] Along the third direction D3, the two ends of the second partition 115 and the middle partition are located outside the front wall panel 113, forming a third wiring groove 118 and a fourth wiring groove 119 at both ends of the second mounting cavity. The third terminal 131 of the second terminal 13 is located at the third wiring groove 118, and the fourth terminal 132 is located at the fourth wiring groove 119, which also facilitates electrical connection with the external structure.

[0078] Please continue to refer to this. Figure 2 Since the first terminal 121, the second terminal 122, the third terminal 131 and the fourth terminal 132 are all conductive parts, if they are always exposed, the potential safety risks to the operators will increase.

[0079] The insulating protective structure of this application includes a first protective part 14, a second protective part 15, and a third protective part 16. In the first direction D1, the first terminal 121 of the first set of terminals is protected by the second protective part 15, the second terminal 122 is protected by the first protective part 14, and the portion between the first terminal 121 and the second terminal 122 is protected by an intermediate partition. Thus, in the first direction D1, with the protective structure in place, the operator cannot access the first terminal 12. Similarly, in the first direction D1, the third terminal 131 of the second set of terminals is protected by the third protective part 16, the fourth terminal 132 is protected by the first protective part 14, and the portion between the third terminal 131 and the fourth terminal 132 is protected by a front wall panel 113. Thus, in the first direction D1, with the protective structure in place, the operator cannot access the second terminal 13. This reduces the operator's contact risk and improves operational safety.

[0080] Figure 4 This is a schematic diagram of the structure of a first terminal block 12 provided in an embodiment of this application. Please refer to it. Figure 2 , Figure 3 and Figure 4 In one embodiment of this application, the first terminal 121 is a screw crimp terminal, including a first terminal block 1211 and a first screw 1212. The first terminal block 1211 is provided with a first screw hole 12111, the axis of the first screw hole 12111 is parallel to the first direction D1, the first screw 1212 is adapted to the first screw hole 12111, and is inserted into the first screw hole 12111 from the side of the first terminal block 1211 away from the mounting plate 111, the position between the head of the first screw 1212 and the first terminal block 1211 is used to connect an external wire 21.

[0081] Thus, when wiring the secondary circuit terminal block provided in this application, the side of the front wall panel 113 away from the mounting plate 111 faces the operator. In the third direction D3, the external wire 21 is inserted from the side of the first terminal 121 away from the second terminal 122 into the position between the head of the first screw 1212 and the first terminal block 1211. Then, in the first direction D1, the first screw 1212 is tightened from the side of the front wall panel 113 away from the mounting plate 111, thereby electrically connecting the first terminal 121 of the first terminal block 12 to the external wire 21.

[0082] Figure 5 This is a schematic diagram of a second protective part 15 provided in an embodiment of this application. Please refer to it. Figures 1 to 5After wiring is completed, the exposed portion of the first terminal 121 needs to be protected to prevent accidental contact by operators and potential safety risks. Therefore, after wiring is completed, a second protective part 15 needs to be installed. The second protective part 15 includes a first protective plate 151, a second protective plate 152, a first side plate 153, and a second side plate 154 connected together. Along the first direction D1, the first protective plate 151 is located on the side of the plurality of first partitions 114 away from the mounting plate 111, and is used to cover the first terminal 121 in the first direction D1. Along the third direction D3, the second protective plate 152 is located at one end of the plurality of first partitions 114 forming the first wiring groove 116, and is used to cover the first terminal 121 in the third direction D3, exposing the wiring portion between the head of the first screw 1212 and the first terminal plate 1211.

[0083] Thus, with the second protective part 15 installed, the first protective plate 151 can prevent operators from touching the first terminal 121 when operating other parts of the circuit breaker in the first direction D1, thereby improving operator safety. The second protective plate 152 covers the first terminal 121 in the third direction D3, which reduces the amount of dust and foreign objects falling into the first wiring slot 116 and enhances the operational reliability of the first terminal 121. The second protective plate 152 exposes the wiring area between the head of the first screw 1212 and the first terminal block 1211, facilitating the direct routing of wires from this point to the secondary terminal block.

[0084] Figure 6 for Figure 5 For the top view, please refer to... Figure 2 , Figure 3 and Figure 6 To facilitate the installation of the second protective part 15, along the second direction D2, the first side plate 153 is connected to one end of the first protective plate 151 and the second protective plate 152, and the first side plate 153 is located on the side of the first first partition 114 away from the adjacent first partition 114, and is fixedly connected to the first first partition 114. The second side plate 154 is connected to the other end of the first protective plate 151 and the second protective plate 152, and the second side plate 154 is located on the side of the last first partition 114 away from the adjacent first partition 114, and is fixedly connected to the last first partition 114.

[0085] In this way, the second protective part 15 is fixedly connected to the mounting base 11 by means of the first side plate 153 and the second side plate 154. This structure can be integrally molded by injection molding, which is easy to implement.

[0086] Figure 7 Please refer to the schematic diagram of the structure of the second terminal block 13 provided in the embodiment of this application. Figure 2 and Figure 7In one embodiment of this application, the third terminal 131 is also a screw crimping terminal, including a second terminal block 1311 and a second screw 1312.

[0087] The second terminal block 1311 is provided with a second screw hole 13111. The axis of the second screw hole 13111 is parallel to the first direction D1. The second screw 1312 is adapted to the second screw hole 13111 and is inserted into the second screw hole 13111 from the side of the second terminal block 1311 away from the mounting plate 111. The position between the head of the second screw 1312 and the terminal block is used to connect the external wire 21.

[0088] Thus, in the third direction D3, when wiring, the external wire 21 can be inserted from the side of the third terminal 131 away from the fourth terminal 132 into the position between the head of the second screw 1312 and the second terminal block 1311. Then, in the first direction D1, tighten the second screw 1312 from the side of the front wall plate 113 away from the mounting plate 111, thereby electrically connecting the third terminal 131 of the second terminal 13 to the external wire 21.

[0089] Figure 8 This is a schematic diagram of a third protective part 16 provided in an embodiment of this application. Please refer to it. Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8 After wiring is completed, the exposed portion of the third terminal 131 needs to be protected to prevent accidental contact by operators and potential safety risks. Therefore, after wiring, a third protective section 16 needs to be installed. The third protective section 16 includes a third protective plate 161, a fourth protective plate 162, a third side plate 163, and a fourth side plate 164 connected together. Along the first direction D1, the third protective plate 161 is located on the side of the plurality of second partitions 115 away from the mounting plate 111, and is used to cover the third terminal 131 in the first direction D1. Along the third direction D3, the fourth protective plate 162 is located at one end of the plurality of second partitions 115 forming the third wiring groove 118, and is used to cover the third terminal 131 in the third direction D3, exposing the wiring portion between the head of the second screw 1312 and the second wiring plate 1311.

[0090] Thus, with the third protective section 16 installed, the third protective plate 161 can prevent operators from touching the third terminal 131 when operating other parts of the circuit breaker in the first direction D1, thereby improving operator safety. The fourth protective plate 162 covers the third terminal 131 in the third direction D3, which reduces the amount of dust and foreign objects falling into the third wiring slot 118 and enhances the operational reliability of the third terminal 131. The fourth protective plate 162 exposes the wiring area between the head of the second screw 1312 and the second terminal block 1311, facilitating the direct routing of wires from this point to the secondary terminal block.

[0091] Figure 9 for Figure 8 Please refer to the top view. Figure 1 , Figure 2 , Figure 3 , Figure 8 and Figure 9 Along the second direction D2, the third side plate 163 is connected to one end of the third protective plate 161 and the fourth protective plate 162, and the third side plate 163 is located on the side of the first second partition 115 away from the adjacent second partition 115, and is fixedly connected to the first second partition 115. The fourth side plate 164 is connected to the other end of the third protective plate 161 and the fourth protective plate 162, and the fourth side plate 164 is located on the side of the last second partition 115 away from the adjacent second partition 115, and is fixedly connected to the last second partition 115.

[0092] In this way, the third protective part 16 is fixedly connected to the mounting base 11 by means of the third side plate 163 and the fourth side plate 164. This structure can be integrally molded by injection molding, which is easy to implement.

[0093] Please combine Figure 1 , Figure 2 , Figure 3 and Figure 6 In one embodiment of this application, a first snap-fit ​​block 1531 is provided on the side of the first side plate 153 near the first first partition 114, and a first snap-fit ​​groove 1141 adapted to the first snap-fit ​​block 1531 is provided on the first first partition 114. A second snap-fit ​​block 1541 is provided on the side of the second side plate 154 near the last first partition 114, and a second snap-fit ​​groove adapted to the second snap-fit ​​block 1541 is provided on the last first partition 114.

[0094] The second protective part 15 engages with the mounting base 11 through the cooperation of the first snap-fit ​​block 1531 with the first snap-fit ​​groove 1141 and the cooperation of the second snap-fit ​​block 1541 with the second snap-fit ​​groove.

[0095] Based on the secondary circuit terminal block provided in this embodiment, after the first set of terminals is assembled with the mounting base 11 and the external wire 21 is connected through the first terminal block 121, the second protective part 15 can be snapped into the mounting base 11 to provide insulation protection for the first terminal block 121. During maintenance, the second protective part 15 can be removed from the mounting base 11. The snap-fit ​​connection between the second protective part 15 and the mounting base 11 provides convenient installation and removal.

[0096] Similarly, please combine Figure 1 , Figure 2 , Figure 3 and Figure 9 In one embodiment of this application, a third snap-fit ​​block 1631 is provided on the side of the third side plate 163 near the first second partition 115, and a third snap-fit ​​groove 1151 adapted to the third snap-fit ​​block 1631 is provided on the first second partition 115. A fourth snap-fit ​​block 1641 is provided on the side of the fourth side plate 164 near the last second partition 115, and a fourth snap-fit ​​groove adapted to the fourth snap-fit ​​block 1641 is provided on the last second partition 115.

[0097] The third protective part 16 engages with the mounting base 11 through the cooperation of the third locking block 1631 and the third locking slot 1151, and the cooperation of the fourth locking block 1641 and the fourth locking slot.

[0098] Based on the secondary circuit terminal block provided in this embodiment, after the second set of terminal blocks is assembled with the mounting base 11 and the external wire 21 is connected via the third terminal block 131, the third protective part 16 can be snapped onto the mounting base 11 to provide insulation protection for the third terminal block 131. During maintenance, the third protective part 16 can be removed from the mounting base 11. The snap-fit ​​connection between the third protective part 16 and the mounting base 11 also provides convenient installation and removal.

[0099] Please combine Figure 3 and Figure 6 In one embodiment of this application, the first snap-fit ​​block 1531 has a first guide slope 15311, and the second snap-fit ​​block 1541 has a second guide slope 15411.

[0100] Specifically, please combine Figure 3 and Figure 6In this embodiment, during installation, the first guide wire slope of the first snap-fit ​​block 1531 is press-fitted with the side wall of the first first partition 114, and the second snap-fit ​​block 1541 is press-fitted with the side wall of the last first partition 114. Guided by the first guide slope 1531, the first snap-fit ​​block 1531 slides along the side wall of the first first partition 114 towards the first snap-fit ​​groove 1141, and the second snap-fit ​​block 1541 slides along the side wall of the last first partition 114 towards the second snap-fit ​​groove, guided by the second guide slope 15411. Therefore, the arrangement of the first guide slope 15311 and the second guide slope 15411 makes the installation of the second protective part 15 easier.

[0101] Similarly, please combine Figure 3 and Figure 9 In one embodiment of this application, the third snap-fit ​​block 1631 has a third guide ramp 16311, and the fourth snap-fit ​​block 1641 has a fourth guide ramp 16411. This makes the installation of the third protective part 16 easier.

[0102] Please continue to refer to this. Figure 3 and Figure 6 The second protective part 15 is connected to the mounting base 11 by a first snap-fit ​​block 1531 and a second snap-fit ​​block 1541. In the snap-fit ​​structure, at least a portion of the first snap-fit ​​block 1531 is located in the first snap-fit ​​groove 1141, and at least a portion of the second snap-fit ​​block 1541 is located in the second snap-fit ​​groove. Therefore, when disassembling the second protective part 15, the first snap-fit ​​block 1531 needs to be removed from the first snap-fit ​​groove 1141, and the second snap-fit ​​block 1541 needs to be removed from the second snap-fit ​​groove before the second protective part 15 can be removed from the mounting base 11.

[0103] To facilitate the disassembly of the second protective part 15, in one embodiment of this application, a first lug 1532 is provided on the side of the first side plate 153 away from the first first partition 114, and a second lug 1542 is provided on the side of the second side plate 154 away from the last first partition 114.

[0104] Thus, when it is necessary to disassemble the second protective part 15, the first lug 1532 and the second lug 1542 can be used as handles. By prying the first lug 1532 and the second lug 1542 toward the side away from each other, the first locking block 1531 can easily be removed from the first locking groove 1141, and the second locking block 1541 can easily be removed from the second locking groove, which facilitates the disassembly of the second protective part 15.

[0105] Similarly, in some embodiments of this application, the third side plate 163 is provided with a third lug 1632 on the side away from the first second partition 115, and the fourth side plate 164 is provided with a fourth lug 1642 on the side away from the last second partition 115. Thus, when the third protective part 16 needs to be disassembled, the third lug 1632 and the fourth lug 1642 can be used as handles. By prying the third lug 1632 and the fourth lug 1642 toward the side away from each other, the third locking block 1631 can easily exit from the third locking slot 1151, and the fourth locking block 1641 can easily exit from the fourth locking slot, facilitating the disassembly of the third protective part 16.

[0106] Please refer to Figure 2 and Figure 3 When in use, the secondary circuit terminal provided in this application is placed along the third direction D3, which is usually vertical. In order to prevent foreign objects from falling into the secondary circuit terminal from the top of the first mounting cavity and the second mounting cavity, in one embodiment of this application, the insulation protection structure further includes a fourth protective part 17 and a fifth protective part 18.

[0107] Figure 10 for Figure 1 A top-view structural diagram, Figure 11 for Figure 10 Enlarged view of point A in the middle. Figure 12 for Figure 10 Please refer to the enlarged image at point B in the middle. Figure 2 , Figure 3 , Figure 10 , Figure 11 and Figure 12 The fourth protective part 17 includes one or more first top covers 171. Along the third direction D3, the first top cover 171 is disposed at the end of the first wiring groove 116 away from the second wiring groove 117. Along the first direction D1, the first top cover 171 is disposed on the side of the mounting plate 111 near the middle partition and extends from the mounting plate 111 to the first wiring plate 1211. The wiring portion of the first wiring terminal 121 is exposed between the first top cover 171 and the first protective plate 151. The fifth protective section 18 includes one or more second top covers 181. Along the third direction D3, the second top cover 181 is disposed at one end of the third wiring groove 118 away from the fourth wiring groove 119. Along the first direction D1, the second top cover 181 is disposed on the side of the intermediate partition near the front wall panel 113 and extends from the intermediate partition to the second wiring plate 1311. The wiring portion of the third wiring terminal 131 is exposed between the second top cover 181 and the third protective plate 161.

[0108] Thus, in the third direction D3, the first top cover 171 and the first protective plate 151 cooperate to expose only the wiring portion of the first terminal 121, covering most of the top area of ​​the first wiring groove 116. The second top cover 181 and the third protective plate 161 cooperate to expose only the wiring portion of the third terminal 131, covering most of the top area of ​​the third wiring groove 118. Based on this, the secondary circuit terminal provided in this application not only prevents accidental contact by operators and reduces safety risks in the first direction D1, but also, in the third direction D3, ensures that the wiring portion is fully exposed for operation while shielding other live parts, improving operational safety; and can prevent foreign objects (such as tools, metal shavings) from falling into the secondary circuit terminal and causing a short circuit.

[0109] Figure 13 This is a schematic diagram of the combined structure of the second protective part 15 and the third protective part 16 provided in the embodiments of this application. Please refer to it. Figure 1 , Figure 2 , Figure 5 , Figure 8 and Figure 13 In some embodiments of this application, a plurality of first operating holes 1511 are provided on the first protective plate 151, the plurality of first operating holes 1511 are arranged along the second direction D2, and each first hole is directly opposite the head of a first screw 1212. A plurality of second operating holes 1611 are provided on the third protective plate 161, the plurality of second operating holes 1611 are arranged along the second direction D2, and each second operating hole 1611 is directly opposite the head of a second screw 1312.

[0110] Thus, when the first terminal 121 of the first terminal 12 needs maintenance, the first screw 1212 can be operated through the first operating hole 1511 without disassembling the second protective part 15, thereby connecting or disconnecting the external wire 21 at the first terminal 121. When the third terminal 131 of the second terminal 13 needs maintenance, the second screw 1312 can be operated through the second operating hole 1611 without disassembling the third protective part 16, thereby connecting or disconnecting the external wire 21 at the third terminal 131.

[0111] exist Figure 13Based on the structure shown, in some other embodiments of this application, to prevent foreign objects from entering the first mounting cavity through the first operating hole 1511 and the second mounting cavity through the second operating hole 1611, dust covers are also provided at the first operating hole 1511 and the second operating hole 1611. The dust cover includes an annular frame, and the inner wall of the annular frame is provided with flexible, slit-like baffles. These baffles naturally come together to close the gaps, sealing the first operating hole 1511 and the second operating hole 1611. When a screwdriver is inserted, it opens the baffles, allowing it to operate inside. After the screwdriver is pulled out, the baffles automatically return to their closed state due to the elasticity of the material, preventing external foreign objects from entering. The dust cover can be connected to the second protective part 15 and the third protective part 16 by snap-fit ​​or adhesive.

[0112] Please combine Figure 1 and Figure 13 In one embodiment of this application, the first protective part 14 is independent of the second protective part 15 and the third protective part 16, which are integrally formed. Thus, only one of the second protective part 15 and the third protective part 16 needs to be provided with a snap-fit ​​structure for connection to the mounting base 11, allowing the second protective part 15 and the third protective part 16 to be installed and disassembled together, facilitating the assembly and disassembly of the second protective part 15 and the third protective part 16.

[0113] Please continue to refer to this. Figure 2 and Figure 3 In one embodiment of this application, in the second direction D2, the positions of the first mounting cavity and the second mounting cavity are offset, and the positions of the first terminal 12 and the second terminal 13 are offset, thereby further increasing the physical isolation between the first terminal 12 and the second terminal 13.

[0114] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0115] The above-described embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A secondary circuit terminal block for a universal circuit breaker, characterized in that, Includes mounting base, first set of terminals, second set of terminals and insulating protection structure; The mounting base includes a mounting plate, a middle partition plate, and a front wall plate arranged along a first direction, wherein the middle partition plate is located between the mounting plate and the front wall plate; The mounting base also includes a plurality of first partitions and a plurality of second partitions. The plurality of first partitions are arranged along a second direction and are disposed between the mounting plate and the middle partition. Two adjacent first partitions, the mounting plate and the middle partition form a first mounting cavity. Multiple second partitions are arranged along a second direction and disposed between the middle partition and the front wall panel, with two adjacent second partitions, the middle partition, and the front wall panel forming a second mounting cavity; Along the third direction, the two ends of the first partition and the mounting plate are located outside the middle partition, the second partition and the front wall plate, forming a first wiring groove and a second wiring groove at the two ends of the first mounting cavity; Along the third direction, the two ends of the second partition and the middle partition are located outside the front wall panel, forming a third wiring groove and a fourth wiring groove at both ends of the second mounting cavity; The first set of terminals includes multiple first terminals, which are correspondingly installed in multiple first mounting cavities; along the third direction, each of the first terminals is provided with a first terminal and a second terminal, the first terminal being located at the first wiring groove and the second terminal being located at the second wiring groove; The second set of terminals includes multiple second terminals, which are correspondingly installed in multiple second mounting cavities; along the third direction, a third terminal and a fourth terminal are respectively provided at both ends of the second terminals, the third terminal being located at the third wiring groove, and the fourth terminal being located at the fourth wiring groove; The insulating protective structure includes a first protective part, a second protective part, and a third protective part. Along the first direction, the first protective part covers the second terminal of the first group of terminals and the fourth terminal of the second group of terminals; the second protective part covers the first terminal of the first group of terminals; and the third protective part covers the third terminal of the second group of terminals. The first direction, the second direction, and the third direction are perpendicular to each other.

2. The secondary circuit wiring terminals of the universal circuit breaker according to claim 1, characterized in that, The first terminal is a screw crimp terminal, including a first terminal block and a first screw; The first terminal block is provided with a first screw hole, the axis of the first screw hole is parallel to the first direction, the first screw is adapted to the first screw hole and is inserted into the first screw hole from the side of the first terminal block away from the mounting plate, and the position between the head of the first screw and the first terminal block is used to connect external wires. The second protective part includes a first protective plate, a second protective plate, a first side plate, and a second side plate connected together; along the first direction, the first protective plate is located on the side of the plurality of first partitions away from the mounting plate, and is used to cover the first terminal in the first direction; along the third direction, the second protective plate is located at one end of the plurality of first partitions forming the first wiring groove, and is used to cover the first terminal in the third direction and expose the wiring part between the head of the first screw and the first terminal plate; Along the second direction, the first side plate is connected to one end of the first protective plate and the second protective plate, and the first side plate is located on the side of the first first partition away from the adjacent first partition, and is fixedly connected to the first first partition; the second side plate is connected to the other end of the first protective plate and the second protective plate, and the second side plate is located on the side of the last first partition away from the adjacent first partition, and is fixedly connected to the last first partition.

3. The secondary circuit wiring terminals of the universal circuit breaker according to claim 2, characterized in that, A first snap-fit ​​block is provided on the side of the first side plate near the first first partition, and a first snap-fit ​​groove adapted to the first snap-fit ​​block is provided on the first first partition. A second snap-fit ​​block is provided on the side of the second side plate near the last first partition plate, and a second snap-fit ​​groove adapted to the second snap-fit ​​block is provided on the last first partition plate. The second protective part is engaged with the mounting base through the engagement of the first snap-fit ​​block and the first snap-fit ​​groove, and the engagement of the second snap-fit ​​block and the second snap-fit ​​groove.

4. The secondary circuit wiring terminals of the universal circuit breaker according to claim 3, characterized in that, The first snap-fit ​​block has a first guide slope, and the second snap-fit ​​block has a second guide slope.

5. The secondary circuit wiring terminals of the universal circuit breaker according to claim 3 or 4, characterized in that, The first side plate is provided with a first lug on the side away from the first first partition, and the second side plate is provided with a second lug on the side away from the last first partition.

6. The secondary circuit terminals of the universal circuit breaker according to any one of claims 2 to 4, characterized in that, The third terminal is also a screw crimping terminal, including the second terminal block and the second screw; The second terminal block is provided with a second screw hole, the axis of the second screw hole is parallel to the first direction, the second screw is adapted to the second screw hole and is inserted into the second screw hole from the side of the second terminal block away from the mounting plate, and the position between the head of the second screw and the terminal block is used to connect external wires; The third protective part includes a third protective plate, a fourth protective plate, a third side plate, and a fourth side plate connected together; along the first direction, the third protective plate is located on the side of the plurality of second partitions away from the mounting plate, and is used to cover the third terminal in the first direction; along the third direction, the fourth protective plate is located at one end of the plurality of second partitions forming the third wiring groove, and is used to cover the third terminal in the third direction and expose the wiring part between the head of the second screw and the second terminal plate; Along the second direction, the third side plate is connected to one end of the third protective plate and the fourth protective plate, and the third side plate is located on the side of the first second partition away from the adjacent second partition, and is fixedly connected to the first second partition; the fourth side plate is connected to the other end of the third protective plate and the fourth protective plate, and the fourth side plate is located on the side of the last second partition away from the adjacent second partition, and is fixedly connected to the last second partition.

7. The secondary circuit wiring terminals of the universal circuit breaker according to claim 6, characterized in that, A third snap-fit ​​block is provided on the side of the third side plate near the first second partition plate, and a third snap-fit ​​groove adapted to the third snap-fit ​​block is provided on the first second partition plate; A fourth snap-fit ​​block is provided on the side of the fourth side plate near the last second partition plate, and a fourth snap-fit ​​groove adapted to the fourth snap-fit ​​block is provided on the last second partition plate. The third protective part is engaged with the mounting base through the cooperation of the third locking block and the third locking slot, and the cooperation of the fourth locking block and the fourth locking slot.

8. The secondary circuit wiring terminals of the universal circuit breaker according to claim 7, characterized in that, The third latching block has a third guide slope, and the fourth latching block has a fourth guide slope.

9. The secondary circuit wiring terminals of the universal circuit breaker according to claim 7 or 8, characterized in that, The third side plate is provided with a third lug on the side away from the first second partition plate, and the fourth side plate is provided with a fourth lug on the side away from the last second partition plate.

10. The secondary circuit wiring terminals of the universal circuit breaker according to claim 6, characterized in that, The insulating protective structure also includes a fourth protective section and a fifth protective section; The fourth protective part includes one or more first top covers. Along the third direction, the first top cover is disposed at the end of the first wiring groove away from the second wiring groove. Along the first direction, the first top cover is disposed on the side of the mounting plate near the middle partition and extends from the mounting plate to the first wiring plate. The wiring portion of the first wiring terminal is exposed between the first top cover and the first protective plate. The fifth protective part includes one or more second top covers. Along the third direction, the second top cover is disposed at one end of the third wiring groove away from the fourth wiring groove. Along the first direction, the second top cover is disposed on the side of the middle partition near the front wall panel and extends from the middle partition to the second wiring plate. The wiring portion of the third wiring terminal is exposed between the second top cover and the third protective plate.

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