Clamping spring, clamping assembly and circuit breaker device

Abstract

The utility model relates to the technical field of electrical equipment, in particular to a clamping spring, a clamping assembly and a circuit breaker device, the clamping spring comprises a first clamping and pressing part, a connecting part and a second clamping and pressing part which are connected in sequence, the first clamping and pressing part and the second clamping and pressing part are arranged in a left-right extending mode, and the connecting part is connected with the first clamping and pressing part. The first clamping and pressing part is located above the second clamping and pressing part, the top end of the connecting part is connected to the rear end of the first clamping and pressing part, the bottom end of the connecting part is connected to the rear end of the second clamping and pressing part, the connecting part tilts backwards, and a receding opening is formed among the first clamping and pressing part, the second clamping and pressing part and the connecting part. In conclusion, the clamping spring is convenient to disassemble and assemble and high in maintenance efficiency, other parts do not need to be fixed to the clamping jaw, the reliability of the clamping spring is not affected after repeated disassembly and assembly, and therefore the requirements for rapid maintenance and high reliability in a modern electric power system can be met.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a clamping spring, a clamping assembly, and a circuit breaker device. Background Technology

[0002] Currently, in the field of power equipment, plug-in circuit breakers are widely used due to their convenient installation and efficient maintenance. Existing plug-in circuit breakers typically achieve electrical connection by clamping the busbar with claws, and the clamping spring, as the core component providing continuous clamping force, directly affects the reliability and maintenance efficiency of the equipment.

[0003] Traditional clamping spring structures are generally divided into integrated fixed structures and detachable structures. Integrated fixed clamping springs require specialized tools or the disassembly of numerous peripheral components for replacement, resulting in lengthy maintenance times and poor ease of maintenance. Furthermore, their inconvenient assembly and disassembly make it difficult for circuit breakers to apply appropriate clamping force to busbars of varying thicknesses. Detachable clamping springs rely on snap-fit ​​and bolt positioning components, which are prone to wear and tear during frequent assembly and disassembly, leading to increased clearance and potential loosening or detachment of the clamping spring. This, in turn, weakens the clamping force of the jaws, potentially causing poor busbar contact, overheating, and other safety hazards, resulting in poor reliability. Therefore, most current clamping spring structures fail to adequately balance ease of assembly and disassembly with reliability, making it difficult to meet the demands of modern power systems for rapid equipment maintenance and high reliability. Utility Model Content

[0004] The purpose of this invention is to provide a clamping spring, clamping assembly, and circuit breaker device to solve the technical problem that most clamping springs currently have structures that cannot fully balance ease of disassembly and assembly with reliability, and thus cannot meet the requirements of modern power systems for rapid equipment maintenance and high reliability.

[0005] To achieve the above objectives, this utility model provides a clamping spring, comprising a first clamping part, a connecting part, and a second clamping part connected in sequence. Both the first clamping part and the second clamping part extend in the left-right direction. The first clamping part is located above the second clamping part. The top end of the connecting part is connected to the rear end of the first clamping part, and the bottom end of the connecting part is connected to the rear end of the second clamping part. The connecting part is tilted backward, and a clearance opening is formed between the first clamping part, the second clamping part, and the connecting part.

[0006] Optionally, the first clamping part includes a first extension section and a second extension section, the first extension section and the second extension section extend in the left and right direction, the first extension section is located behind the second extension section, one end of the first extension section is connected to the top end of the connecting part, the other end of the first extension section is connected to one end of the second extension section and is located on one side of the top end of the connecting part in the left and right direction, and the two ends of the second extension section are respectively located on both sides of the top end of the connecting part in the left and right direction.

[0007] The second clamping part includes a third extension section and a fourth extension section, which extend in the left-right direction. The third extension section is located behind the fourth extension section. One end of the third extension section is connected to the bottom end of the connecting part, and the other end of the third extension section is connected to one end of the fourth extension section and located on one side of the bottom end of the connecting part in the left-right direction. The two ends of the fourth extension section are respectively located on both sides of the bottom end of the connecting part in the left-right direction.

[0008] Optionally, a transition bend is provided at the connection between the top end of the first extension segment and the connecting portion, at the connection between the first extension segment and the second extension segment, at the connection between the bottom end of the third extension segment and the connecting portion, and at the connection between the third extension segment and the fourth extension segment.

[0009] Optionally, the first extension segment and the third extension segment are located on both sides of the connecting portion in the left-right direction.

[0010] This utility model also relates to a clamping assembly, including a first clamping jaw, a second clamping jaw, and the aforementioned clamping spring. The first clamping jaw is disposed above the second clamping jaw, and the first clamping jaw has a first connecting portion and a first clamping portion, with the first clamping portion located in front of the first connecting portion. The second clamping jaw has a second connecting portion and a second clamping portion, with the second clamping portion located in front of the second connecting portion. The first connecting portion is connected to the second connecting portion, and a forward-through clamping opening is formed between the first clamping portion and the second clamping portion. A receiving cavity is formed between the first clamping jaw and the second clamping jaw, and the receiving cavity is located behind the clamping opening and between the first connecting portion and the second connecting portion. At the front of the first gripper, the receiving cavity is connected to the clamping opening. The top surface of the first gripper is provided with a first clearance notch that extends through the receiving cavity and the clamping opening. The first clearance notch extends forward to the front side of the first gripper. The bottom surface of the second gripper is provided with a second clearance notch that extends through the receiving cavity and the clamping opening. The second clearance notch extends forward to the front side of the first gripper. The second clearance notch is located below the first clearance notch. The first clamping part abuts against the top surface of the first clamping part. The second clamping part abuts against the bottom surface of the second clamping part. The connecting part passes through the first clearance notch, the second clearance notch, and the receiving cavity.

[0011] Optionally, it also includes multiple clamping springs, the first clamping claw is provided with multiple first clearance notches at intervals along the left and right direction, the second clamping claw is provided with multiple second clearance notches at intervals along the left and right direction, and the clamping springs, the first clearance notches and the second clearance notches are provided in a one-to-one correspondence.

[0012] Optionally, the first clamping part includes a first clamping segment, a second clamping segment, and a third clamping segment connected sequentially from back to front. The first clamping segment extends obliquely downward from back to front, and the first clamping part abuts against the top surface of the second clamping segment. The third clamping segment extends obliquely upward from back to front. The second clamping part includes a fourth clamping segment, a fifth clamping segment, and a sixth clamping segment connected sequentially from back to front. The fourth clamping segment extends obliquely upward from back to front, and the second clamping part abuts against the bottom surface of the fifth clamping segment. The sixth clamping segment extends obliquely downward from back to front.

[0013] Optionally, it also includes an insulating layer and a connecting plate, the connecting plate having a first end and a second end, the first end being connected to the first connecting portion and / or the second connecting portion, the second end being used to connect to the connecting end of the circuit breaker body, and an insulating layer being provided between the first clamping portion and the second end, and between the second clamping portion and the second end.

[0014] This utility model also relates to a circuit breaker device, including a circuit breaker body and a plurality of the aforementioned clamping components. The front side of the circuit breaker body is provided with a plurality of the aforementioned connecting ends, and the clamping components are connected to the connecting ends one by one.

[0015] Optionally, it also includes an insulating partition and an insulating cover plate connected to the circuit breaker body, an insulating partition plate is provided between two adjacent clamping assemblies, the front end of the insulating partition plate is provided with a plurality of third clearance notches, and the insulating cover plate is provided above each clamping assembly.

[0016] Compared with the prior art, the advantages of the clamping spring, clamping assembly, and circuit breaker device implemented in this utility model are as follows:

[0017] In this invention's clamping spring, a first clamping part is located at the top, abutting against an upper clamping jaw and applying downward pressure thereon. A second clamping part is located at the bottom, abutting against a lower clamping jaw and applying upward pressure thereon. A connecting part connects the first and second clamping parts, with the portion between its top and bottom ends tilted backward to create a clearance opening between the connecting part, the first clamping part, and the second clamping part. When the clamping assembly with this clamping spring is connected to a busbar, the phase of the busbar is inserted between the two jaws of the clamping assembly. The first and second clamping parts provide pressure, causing the two jaws to clamp the top and bottom surfaces of the phase. Furthermore, the phase block is located within the clearance opening, preventing contact between the phase block and the clamping spring. Moreover, when the clamping spring needs to be removed, it can be pulled forward directly, or the spring can be pulled forward after squeezing the two jaws of the clamping assembly. When the clamping spring needs to be installed, simply squeeze the two jaws of the clamping assembly and then place the spring onto them. In summary, the clamping spring of this invention is easy to install and remove, has high maintenance efficiency, and does not require other components to fix it to the jaws. Multiple installations and removals will not affect its reliability. Therefore, it can meet the needs of rapid maintenance and high reliability in modern power systems. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the circuit breaker device of this utility model.

[0019] Figure 2 This is a schematic diagram of the clamping assembly of this utility model.

[0020] Figure 3 This is a front view of the clamping assembly of this utility model.

[0021] Figure 4 This is a schematic diagram of the clip spring of this utility model.

[0022] Reference numerals: 1. Circuit breaker body; 11. Connecting end; 2. Clamping assembly; 21. First gripper; 211. First clamping part; 2111. First clamping section; 2112. Second clamping section; 2113. Third clamping section; 212. First connecting part; 213. First clearance notch; 22. Second gripper; 221. Second clamping part; 2211. Fourth clamping section; 2212. Fifth clamping section; 2213. Sixth clamping section; 222. Second connecting part ; 223, Second clearance notch; 23, Clamping spring; 231, First clamping part; 2311, First extension section; 2312, Second extension section; 232, Second clamping part; 2321, Third extension section; 2322, Fourth extension section; 233, Connecting part; 234, Clearance opening; 24, Clamping opening; 25, Receiving cavity; 26, Connecting plate; 261, First end; 262, Second end; 3, Insulating partition; 31, Third clearance notch; 4, Insulating cover plate. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0024] In the description of this utility model, it should be understood that the terms "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] like Figures 1 to 4As shown, a clamping spring 23 of this utility model includes a first clamping part 231, a connecting part 233, and a second clamping part 232 connected in sequence. The first clamping part 231 and the second clamping part 232 both extend in the left-right direction. The first clamping part 231 is located above the second clamping part 232. The top end of the connecting part 233 is connected to the rear end of the first clamping part 231, and the bottom end of the connecting part 233 is connected to the rear end of the second clamping part 232. The connecting part 233 is tilted backward, and a clearance opening 234 is formed between the first clamping part 231, the second clamping part 232, and the connecting part 233.

[0027] In the above technical solution, the first clamping part 211 is located at the top and is used to abut against the upper clamping jaw and apply downward pressure to it. The second clamping part 221 is located at the bottom and is used to abut against the lower clamping jaw and apply upward pressure to it. The connecting part is used to connect the first clamping part 211 and the second clamping part 221. The portion between its top and bottom ends is raised backward, so that a clearance opening 234 is formed between the connecting part, the first clamping part 211 and the second clamping part 221. When the clamping assembly 2 equipped with the clamping spring 23 is connected to the busbar, the phase of the busbar is inserted between the two clamping jaws of the clamping assembly 2. The first clamping part 231 and the second clamping part 232 provide pressure, so that the two clamping jaws clamp the top surface of the phase and The bottom surface of the phase row is located within the clearance opening 234 to prevent the phase row from contacting the clamping spring 23. Furthermore, when it is necessary to remove the clamping spring 23, the clamping spring 23 can be pulled forward directly, or the clamping spring 23 can be pulled forward after squeezing the two jaws of the clamping assembly 2 to remove the clamping spring 23. When it is necessary to install the clamping spring 23, it is only necessary to squeeze the two jaws of the clamping assembly 2 and then put the clamping spring 23 on the two jaws to install the clamping spring 23. In summary, the clamping spring 23 of this utility model is easy to install and remove, has high maintenance efficiency, and does not need to rely on other parts to fix it to the jaws. Multiple installations and removals will not affect its reliability. Therefore, it can meet the needs of rapid maintenance and high reliability in modern power systems.

[0028] In addition, the spring 23 can be made of an elastic metal material, such as carbon steel.

[0029] Furthermore, the first clamping portion 231 includes a first extension segment 2311 and a second extension segment 2312, which extend in a left-right direction. The first extension segment 2311 is located behind the second extension segment 2312. One end of the first extension segment 2311 is connected to the top end of the connecting portion 233, and the other end of the first extension segment 2311 is connected to one end of the second extension segment 2312 and located on one side of the top end of the connecting portion 233 in a left-right direction. The two ends of the second extension segment 2312 are respectively located on both sides of the top end of the connecting portion 233 in a left-right direction. The second clamping portion 232 includes a third extension segment 2321 and... The fourth extension segment 2322 extends in the left-right direction along with the third extension segment 2321 and the fourth extension segment 2322. The third extension segment 2321 is located behind the fourth extension segment 2322. One end of the third extension segment 2321 is connected to the bottom end of the connecting part 233, and the other end of the third extension segment 2321 is connected to one end of the fourth extension segment 2322 and is located on one side of the bottom end of the connecting part 233 in the left-right direction. The two ends of the fourth extension segment 2322 are respectively located on both sides of the bottom end of the connecting part 233 in the left-right direction, so that the various components of the clamping spring 23 are connected sequentially to form a continuous structure. This continuous structure has good manufacturability and is convenient for production.

[0030] Furthermore, in order to further improve the manufacturability and give the spring 23 better strength, transition bends are provided at the connection points of the top end of the first extension segment 2311 and the connecting portion 233, the connection points of the first extension segment 2311 and the second extension segment 2312, the connection points of the third extension segment 2321 and the connecting portion 233, and the connection points of the third extension segment 2321 and the fourth extension segment 2322.

[0031] In addition, the first clamping part 231, the second clamping part 232 and the connecting part 233 can be composed of rod segments with a circular cross-section.

[0032] Furthermore, the first extension segment 2311 and the third extension segment 2321 are respectively located on both sides of the connecting portion 233 in the left-right direction, so that both sides of the gripper are clamped by three extension segments, so that the gripper can evenly clamp the busbar and prevent the clamping force from being too large or too small in a certain place. Specifically, it can be as follows: the first extension segment 2311 and the second extension segment 2312 apply pressure to the left side of the upper gripper, the fourth extension segment 2322 applies pressure to the left side of the lower gripper, the second extension segment 2312 applies pressure to the right side of the upper gripper, and the third extension segment 2321 and the fourth extension segment 2322 apply pressure to the right side of the lower gripper.

[0033] This embodiment also relates to a clamping assembly 2, including a first clamping jaw 21, a second clamping jaw 22, and the aforementioned clamping spring 23. The first clamping jaw 21 is disposed above the second clamping jaw 22, and the first clamping jaw 21 has a first connecting portion 212 and a first clamping portion 211, with the first clamping portion 211 located in front of the first connecting portion 212. The second clamping jaw 22 has a second connecting portion 222 and a second clamping portion 221, with the second clamping portion 221 located in front of the second connecting portion 222. The first connecting portion 212 is connected to the second connecting portion 222. A forward-through clamping opening 24 is formed between the first clamping portion 211 and the second clamping portion 221. A receiving cavity 25 is formed between the first clamping jaw 21 and the second clamping jaw 22, and the receiving cavity 25 is located behind the clamping opening 24 and between the first connecting portion 212 and the second clamping portion 222. At the front of the connecting part 222, the receiving cavity 25 is connected to the clamping opening 24. The top surface of the first gripper 21 is provided with a first clearance notch 213 that extends through the receiving cavity 25 and the clamping opening 24. The first clearance notch 213 extends forward to the front side of the first gripper 21. The bottom surface of the second gripper 22 is provided with a second clearance notch 223 that extends through the receiving cavity 25 and the clamping opening 24. The second clearance notch 223 extends forward to the front side of the first gripper 21. The second clearance notch 223 is located below the first clearance notch 213. The first clamping part 231 abuts against the top surface of the first clamping part 211. The second clamping part 232 abuts against the bottom surface of the second clamping part 221. The connecting part 233 is provided through the first clearance notch 213, the second clearance notch 223, and the receiving cavity 25.

[0034] When the clamping assembly 2 is connected to the busbar, the phase of the busbar is inserted into the clamping port 24. The first clamping part 231 and the second clamping part 232 provide pressure, causing the first clamping claw 21 and the second clamping claw 22 to abut against the top and bottom surfaces of the phase, respectively. The phase is located within the receiving cavity 25 and within the clearance opening 234, without contacting the clamping spring 23. Furthermore, when it is necessary to remove the clamping spring 23, the clamping spring 23 is directly pulled forward out of the first clearance notch 213 and the second clearance notch 22. Alternatively, the first jaw 21 can be pressed down, the second jaw 22 can be pressed up, and the spring 23 can be pulled forward out of the first clearance notch 213 and the second clearance notch 223 to remove the spring 23. When the spring 23 needs to be installed, the first jaw 21 can be pressed down, the second jaw 22 can be pressed up, and the spring 23 can be inserted into the first clearance notch 213 and the second clearance notch 223 and placed on the two jaws to install the spring 23.

[0035] Furthermore, it also includes multiple clamping springs 23, the first clamping claw 21 is provided with multiple first clearance notches 213 spaced apart in the left and right direction, the second clamping claw 22 is provided with multiple second clearance notches 223 spaced apart in the left and right direction, and the clamping springs 23, the first clearance notches 213 and the second clearance notches 223 are arranged in a one-to-one correspondence.

[0036] The first clearance notch 213 is equivalent to dividing the first clamping part 211 into several segments along the left and right direction, and the second clearance notch 223 is equivalent to dividing the second clamping part 221 into several segments along the left and right direction. The multiple clamping springs 23 can make the force on the middle part of the first clamping part 211 and the second clamping part 221 more balanced, so as to improve the reliability of clamping.

[0037] Furthermore, the first clamping part 211 includes a first clamping segment 2111, a second clamping segment 2112, and a third clamping segment 2113 connected sequentially from back to front. The first clamping segment 2111 extends obliquely downward from back to front, and the first clamping part 231 abuts against the top surface of the second clamping segment 2112. The third clamping segment 2113 extends obliquely upward from back to front. The second clamping part 221 includes a fourth clamping segment 2211, a fifth clamping segment 2212, and a sixth clamping segment 2213 connected sequentially from back to front. The fourth clamping segment 2211 extends obliquely upward from back to front, and the second clamping part 232 abuts against the bottom surface of the fifth clamping segment 2212. The sixth clamping segment 2213 extends obliquely downward from back to front.

[0038] The first clamping section 2111 and the fourth clamping section 2211 are correspondingly arranged, the second clamping section 2112 and the fifth clamping section 2212 are correspondingly arranged, the bottom surface of the second clamping section 2112 and the top surface of the fifth clamping section 2212 are used to clamp the phase array, the third clamping section 2113 and the sixth clamping section 2213 are correspondingly arranged, the third clamping section 2113 and the sixth clamping section 2213 are obliquely extended to facilitate the guidance of the phase array, facilitate the insertion of the phase array, facilitate the disassembly and assembly of the clamping spring 23, and prevent the clamping spring 23 from disengaging from the clamping jaws.

[0039] Furthermore, it also includes an insulating layer and a connecting plate 26. The connecting plate 26 has a first end 261 and a second end 262. The first end 261 is connected to the first connecting part 212 and / or the second connecting part 222. The second end 262 is used to connect to the connecting end 11 of the circuit breaker body 1. An insulating layer is provided between the first clamping part 211 and the second end 262, and between the second clamping part 221 and the second end 262, to improve electrical safety.

[0040] The first connecting part 212 is provided with a first connecting hole, the second connecting part 222 is provided with a second connecting hole, and the first end 261 is provided with a third connecting hole. The fastener passes through the first connecting hole, the second connecting hole, and the third connecting hole to connect the first clamping part 211, the second clamping part 221, and the connecting plate 26. The surfaces where the first connecting hole, the second connecting hole, the third connecting hole, the first connecting part 212 and the second connecting part 222 meet, and the surface where the connecting part and the first end 261 meet are not provided with an insulating layer to ensure that the first clamping part 211, the second clamping part 221, and the connecting part are electrically connected.

[0041] This embodiment also includes a circuit breaker device, including a circuit breaker body 1 and a plurality of the aforementioned clamping components 2. The front side of the circuit breaker body 1 is provided with a plurality of the aforementioned connection ends 11, and the clamping components 2 are connected to the connection ends 11 one by one.

[0042] The circuit breaker body 1 is connected to multiple phases on the busbar via multiple clamping components 2.

[0043] Furthermore, it also includes an insulating partition 3 and an insulating cover plate 4 connected to the circuit breaker body 1. An insulating partition 3 is provided between two adjacent clamping components 2. The front end of the insulating partition 3 is provided with a plurality of third clearance notches 31. The insulating cover plate 4 is provided above each clamping component 2 to improve electrical safety. The third clearance notches 31 are used to avoid phase rows.

[0044] Furthermore, fixed setting and fixed connection refer to the fixed relative positional relationship of two components, including but not limited to fixing by connectors, fixing by welding, fixing by adhesive, fixing by integral molding, and fixing by snap-fit ​​connection.

[0045] Furthermore, the connectors include, but are not limited to, fasteners, straps, ropes, pneumatic connectors, hydraulic connectors, flanges, Velcro, and buttons.

[0046] In summary, this utility model embodiment provides a clamping spring 23, a clamping assembly 2, and a circuit breaker device, the technical effects of which are as follows:

[0047] In the clamping spring 23 of this utility model, the first clamping part 211 is located at the top and is used to abut against the upper clamping jaw and apply downward pressure to it. The second clamping part 221 is located at the bottom and is used to abut against the lower clamping jaw and apply upward pressure to it. The connecting part is used to connect the first clamping part 211 and the second clamping part 221. The portion between its top and bottom ends is raised backward, so that a clearance opening 234 is formed between the connecting part, the first clamping part 211 and the second clamping part 221. When the clamping assembly 2 equipped with the clamping spring 23 is connected to the busbar, the phase of the busbar is inserted between the two clamping jaws of the clamping assembly 2. The first clamping part 231 and the second clamping part 232 provide pressure, so that the two clamping jaws clamp the top of the phase. The phase group is positioned within the clearance opening 234, preventing contact between the phase group and the clamping spring 23. Furthermore, when the clamping spring 23 needs to be removed, it can be pulled forward directly, or the clamping spring 23 can be pulled forward after squeezing the two jaws of the clamping assembly 2 to remove the clamping spring 23. When the clamping spring 23 needs to be installed, it is only necessary to squeeze the two jaws of the clamping assembly 2 and then put the clamping spring 23 on the two jaws to install the clamping spring 23. In summary, the clamping spring 23 of this utility model is easy to install and remove, has high maintenance efficiency, and does not need to be fixed to the jaws by other components. Multiple installations and removals will not affect its reliability. Therefore, it can meet the needs of rapid maintenance and high reliability in modern power systems.

[0048] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A clamping spring (23), characterized in that, The device includes a first clamping part (231), a connecting part (233), and a second clamping part (232) connected in sequence. Both the first clamping part (231) and the second clamping part (232) extend in the left-right direction. The first clamping part (231) is located above the second clamping part (232). The top end of the connecting part (233) is connected to the rear end of the first clamping part (231), and the bottom end of the connecting part (233) is connected to the rear end of the second clamping part (232). The connecting part (233) is tilted backward. A clearance opening (234) is formed between the first clamping part (231), the second clamping part (232), and the connecting part (233).

2. The spring clip (23) according to claim 1, characterized in that, The first clamping part (231) includes a first extension section (2311) and a second extension section (2312). The first extension section (2311) and the second extension section (2312) extend in the left and right direction. The first extension section (2311) is located behind the second extension section (2312). One end of the first extension section (2311) is connected to the top end of the connecting part (233). The other end of the first extension section (2311) is connected to one end of the second extension section (2312) and is located on one side of the top end of the connecting part (233) in the left and right direction. The two ends of the second extension section (2312) are respectively located on both sides of the top end of the connecting part (233) in the left and right direction. The second clamping part (232) includes a third extension section (2321) and a fourth extension section (2322), which extend in the left-right direction. The third extension section (2321) is located behind the fourth extension section (2322). One end of the third extension section (2321) is connected to the bottom end of the connecting part (233), and the other end of the third extension section (2321) is connected to one end of the fourth extension section (2322) and is located on one side of the bottom end of the connecting part (233) in the left-right direction. The two ends of the fourth extension section (2322) are respectively located on both sides of the bottom end of the connecting part (233) in the left-right direction.

3. The spring clip (23) according to claim 2, characterized in that, The first extension segment (2311) and the connecting portion (233) have transition bends at the top of their connection points, the first extension segment (2311) and the second extension segment (2312) have their connection points, the third extension segment (2321) and the connecting portion (233) have their connection points, and the third extension segment (2321) and the fourth extension segment (2322) have their connection points.

4. The spring clip (23) according to claim 2, characterized in that, The first extension segment (2311) and the third extension segment (2321) are located on both sides of the connecting portion (233) in the left-right direction.

5. A clamping assembly (2), characterized in that, The device includes a first gripper (21), a second gripper (22), and a clamping spring (23) as described in any one of claims 1 to 4. The first gripper (21) is disposed above the second gripper (22). The first gripper (21) has a first connecting portion (212) and a first clamping portion (211), with the first clamping portion (211) located in front of the first connecting portion (212). The second gripper (22) has a second connecting portion (222) and a second clamping portion (221), with the second clamping portion... (221) Located in front of the second connecting part (222), the first connecting part (212) is connected to the second connecting part (222). A forward-through clamping opening (24) is formed between the first clamping part (211) and the second clamping part (221). A receiving cavity (25) is formed between the first clamping jaw (21) and the second clamping jaw (22). The receiving cavity (25) is located behind the clamping opening (24) and between the first connecting part (212) and the second connecting part (222). (222) In front of the receiving cavity (25), the receiving cavity (25) is connected to the clamping opening (24). The top surface of the first jaw (21) is provided with a first clearance notch (213) that penetrates into the receiving cavity (25) and the clamping opening (24). The first clearance notch (213) extends forward to the front side of the first jaw (21). The bottom surface of the second jaw (22) is provided with a second clearance notch (223) that penetrates into the receiving cavity (25) and the clamping opening (24). (223) extends forward to the front side of the first gripper (21), the second clearance notch (223) is located below the first clearance notch (213), the first clamping part (231) abuts against the top surface of the first clamping part (211), the second clamping part (232) abuts against the bottom surface of the second clamping part (221), and the connecting part (233) passes through the first clearance notch (213), the second clearance notch (223), and the receiving cavity (25).

6. The clamping assembly (2) according to claim 5, characterized in that, It also includes multiple clamping springs (23), the first clamping jaw (21) is provided with multiple first clearance notches (213) spaced apart in the left and right direction, and the second clamping jaw (22) is provided with multiple second clearance notches (223) spaced apart in the left and right direction. The clamping springs (23), the first clearance notches (213) and the second clearance notches (223) are arranged in a one-to-one correspondence.

7. The clamping assembly (2) according to claim 5, characterized in that, The first clamping part (211) includes a first clamping segment (2111), a second clamping segment (2112), and a third clamping segment (2113) connected sequentially from back to front. The first clamping segment (2111) extends obliquely downward from back to front. The first clamping part (231) abuts against the top surface of the second clamping segment (2112). The third clamping segment (2113) extends obliquely upward from back to front. The second clamping part (221) includes a fourth clamping segment (2211), a fifth clamping segment (2212), and a sixth clamping segment (2213) connected sequentially from back to front. The fourth clamping segment (2211) extends obliquely upward from back to front. The second clamping part (232) abuts against the bottom surface of the fifth clamping segment (2212). The sixth clamping segment (2213) extends obliquely downward from back to front.

8. The clamping assembly (2) according to claim 5, characterized in that, It also includes an insulating layer and a connecting plate (26), the connecting plate (26) having a first end (261) and a second end (262), the first end (261) being connected to the first connecting part (212) and / or the second connecting part (222), the second end (262) being used to connect to the connecting end (11) of the circuit breaker body (1), and an insulating layer being provided between the first clamping part (211) and the second end (262), and between the second clamping part (221) and the second end (262).

9. A circuit breaker device, characterized in that, The circuit breaker body (1) includes a plurality of clamping assemblies (2) according to any one of claims 5 to 8, wherein the front side of the circuit breaker body (1) is provided with a plurality of the connection ends (11), and the clamping assemblies (2) are connected to the connection ends (11) one by one.

10. The clamping assembly (2) according to claim 9, characterized in that, It also includes an insulating partition (3) and an insulating cover plate (4) connected to the circuit breaker body (1). An insulating partition (3) is provided between two adjacent clamping assemblies (2). The front end of the insulating partition (3) is provided with a plurality of third clearance notches (31). The insulating cover plate (4) is located above each clamping assembly (2).

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