A circuit breaker

Abstract

The utility model provides a circuit breaker relates to electrical equipment technical field. Circuit breaker includes movable contact, static contact, first connecting conductor and second connecting conductor, first connecting conductor includes first connecting section, soft connection section and second connecting section who connects in proper order, first connecting section is used for fixedly arranged in installation shell and is used for connecting with external electrical element, second connecting section is connected with movable contact to follow movable contact synchronous movement, static contact is connected with second connecting conductor, under the condition that movable contact and static contact are closed, first connecting section, soft connection section, second connecting section, movable contact, static contact and second connecting conductor form the conductive loop, the current direction of first connecting section and second connecting section is opposite, and the current direction with second connecting conductor is same, has realized the purpose that the electromagnetic force of using current self generation enhances contact pressure under the closed state, thereby has improved the short time resistance performance and operation reliability of circuit breaker.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and more specifically, to a circuit breaker. Background Technology

[0002] Circuit breakers, as key protective components in electrical equipment, are widely used in various power distribution systems to reliably connect or disconnect circuits under normal or fault conditions, ensuring the safe and stable operation of the power system. Among them, vacuum circuit breakers are widely used in medium and high voltage fields due to their excellent arc-extinguishing performance and long service life.

[0003] However, in practical applications, especially under high current or short-circuit conditions, this type of vacuum circuit breaker is prone to generating significant electrodynamic repulsion due to current concentration. This electrodynamic force not only affects the contact stability of the contacts but may also cause the contacts to spring open or even be damaged during short-time withstand current tests, thus significantly reducing the short-time withstand capability of the circuit breaker. This deficiency limits the further application of vacuum circuit breakers in power distribution systems with high short-circuit protection requirements. Utility Model Content

[0004] This invention provides a circuit breaker that can improve the short-time withstand capability of the circuit breaker under high fault current conditions while ensuring smooth movement of the moving contact, so as to meet the needs of power distribution systems for high-performance protection circuit breakers.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] In a first aspect, this utility model provides a circuit breaker, comprising:

[0007] Moving contact;

[0008] Static contact head;

[0009] The first connecting conductor includes a first connecting segment, a flexible connecting segment, and a second connecting segment connected in sequence. The first connecting segment is fixedly mounted on the mounting housing and used to connect with external electrical components. The second connecting segment is connected to the moving contact to move synchronously with the moving contact. At least a portion of the flexible connecting segment is used to deform when the second connecting segment moves with the moving contact.

[0010] The second connecting conductor, the stationary contact being connected to the second connecting conductor;

[0011] When the moving contact and the stationary contact are closed, the first connecting section, the flexible connecting section, the second connecting section, the moving contact, the stationary contact, and the second connecting conductor form a conductive circuit. The current directions of the first connecting section and the second connecting section are opposite, and the current direction of the second connecting conductor is the same.

[0012] In an optional embodiment, the flexible connection segment includes a first connection portion, a deformable portion, and a second connection portion connected in sequence, wherein the first connection portion is connected to the first connection segment, and the second connection portion is connected to the second connection segment;

[0013] The deformable part is used to bend under the drive of the second connecting part, so that the part of the deformable part connected to the second connecting part moves synchronously with the second connecting part; or the deformable part is used to extend or compress under the drive of the second connecting part.

[0014] In an optional embodiment, the deformable part is provided with a first through hole, and the first connecting section is provided with a second through hole, with the first through hole and the second through hole being provided correspondingly;

[0015] The circuit breaker also includes an insulating component, which is movably disposed through the first through hole and the second through hole and connected to the moving contact, for driving the moving contact to move toward or away from the stationary contact, so as to close or open the circuit.

[0016] In an optional embodiment, the first connecting portion is provided with a first mounting hole, and the first connecting segment is provided with a second mounting hole. The first mounting hole and the second mounting hole are used for fixed engagement with fasteners.

[0017] And / or, the second connecting portion is provided with a third mounting hole, and the second connecting segment is provided with a fourth mounting hole, the third mounting hole and the fourth mounting hole being used for fixed engagement with fasteners.

[0018] In an optional embodiment, the first connecting segment is provided with a mounting groove, the second mounting hole is provided on the bottom wall of the mounting groove, and the first connecting portion and part of the deformable portion are embedded in the mounting groove.

[0019] In an optional embodiment, the flexible connection segment is made of multiple stacked conductive foils.

[0020] In an optional embodiment, the second connecting segment is provided with a clamping part that clamps the moving contact.

[0021] In an optional embodiment, the second connecting segment is further provided with at least two clamping arms connected to the clamping part. The clamping arms are provided with fifth mounting holes, and the fifth mounting holes of the at least two clamping arms are used to fix and cooperate with fasteners so that the clamping part clamps the moving contact.

[0022] In an optional embodiment, the first connecting segment is further provided with a sixth mounting hole for installing fasteners to securely engage with the external electrical components.

[0023] In an optional embodiment, the first connecting segment, the flexible connecting segment, the second connecting segment, the moving contact, the stationary contact, and the second connecting conductor are arranged sequentially in the linear direction of the moving contact toward the stationary contact.

[0024] The beneficial effects of the circuit breaker provided by this utility model embodiment include: the current direction of the first connecting section and the second connecting section is opposite, and the current direction of the second connecting conductor is the same. Therefore, under the interaction of the electromagnetic force generated between the conductors, the contact pressure between the moving contact and the stationary contact is enhanced. Thus, based on the characteristic of automatically increasing the contact pressure as the current increases, the withstand capability of the circuit breaker under high current short circuit conditions is effectively improved, avoiding contact separation or poor contact due to electrodynamic repulsion. In addition, the first connecting conductor is a structure with flexible deformation capability. The first connecting section is fixedly installed in the mounting housing and establishes a stable connection with the external electrical components, while the second connecting section is directly connected to the moving contact to ensure that the moving contact can maintain good conductivity during movement. The flexible connecting section can ensure conductivity continuity and has sufficient flexibility to adapt to the displacement change of the moving contact. Thus, during the closing and opening switching of the circuit breaker, the conductive path where the flexible connecting section is located can move synchronously with the moving contact without generating additional mechanical stress that hinders operation. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A simplified structural diagram of the circuit breaker provided in this embodiment of the utility model;

[0027] Figure 2 A schematic diagram of the first connecting conductor structure provided in an embodiment of this utility model;

[0028] Figure 3 A schematic diagram of the soft connection segment structure provided in an embodiment of this utility model;

[0029] Figure 4 This is a schematic diagram of the first connecting segment structure provided in an embodiment of the present utility model;

[0030] Figure 5 This is a schematic diagram of the second connecting section, moving contact, and insulating component provided in an embodiment of the present utility model.

[0031] Figure 6This is a schematic cross-sectional view of the first connecting segment and the flexible connecting segment provided in an embodiment of the present utility model;

[0032] Figure 7 A schematic diagram of the stationary contact, moving contact, and vacuum bubble structure provided in an embodiment of this utility model;

[0033] Figure 8 A schematic diagram of the circuit breaker closing provided for an embodiment of this utility model;

[0034] Figure 9 A schematic diagram of the circuit breaker tripping provided for an embodiment of this utility model;

[0035] Figure 10 A cross-sectional view of another embodiment of the circuit breaker provided in this utility model regarding the flexible connection section;

[0036] Figure 11 A schematic diagram of another embodiment of the circuit breaker with respect to the flexible connection section provided in this utility model embodiment.

[0037] Icons: 10-Circuit breaker; 100-Moving contact; 200-Stationary contact; 300-First connecting conductor; 310-First connecting section; 311-Second through hole; 312-Second mounting hole; 313-Mounting groove; 314-Sixth mounting hole; 320-Flexible connecting section; 321-First connecting part; 3211-First mounting hole; 322-Deformation part; 3221-First through hole; 323-Second connecting part; 3231-Third mounting hole; 330-Second connecting section; 331-Fourth mounting hole; 332-Clamping part; 333-Clamping arm; 334-Fifth mounting hole; 400-Second connecting conductor; 500-Insulating component; 600-Vacuum bubble; 700-Fastener. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, 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, and therefore should not be construed as a limitation of this utility model.

[0042] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0043] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0044] Circuit breakers, as key protective components in electrical equipment, are widely used in various power distribution systems to reliably connect or disconnect circuits under normal or fault conditions, ensuring the safe and stable operation of the power system. Among them, vacuum circuit breakers are widely used in medium and high voltage fields due to their excellent arc-extinguishing performance and long service life.

[0045] However, in practical applications, especially under high current or short-circuit conditions, this type of vacuum circuit breaker is prone to generating significant electrodynamic repulsion due to current concentration. This electrodynamic force not only affects the contact stability of the contacts but may also cause the contacts to spring open or even be damaged during short-time withstand current tests, thus significantly reducing the short-time withstand capability of the circuit breaker. This deficiency limits the further application of vacuum circuit breakers in power distribution systems with high short-circuit protection requirements.

[0046] Based on the problems existing in the current technology, please refer to Figures 1 to 9 This utility model provides a circuit breaker 10, which can solve the problem that the contact stability of the vacuum circuit breaker 10 is affected by excessive electrodynamic force under high short-time withstand current conditions, so as to meet the needs of modern power distribution systems for high-performance protection circuit breakers 10.

[0047] In detail, the circuit breaker 10 includes a moving contact 100, a stationary contact 200, a first connecting conductor 300, and a second connecting conductor 400. It is worth mentioning that the circuit breaker 10 also includes a mounting housing (not shown in the figure), in which the moving contact 100 is movably disposed, and the stationary contact 200, the first connecting conductor 300, and the second connecting conductor 400 are also disposed within the mounting housing.

[0048] The first connecting conductor 300 includes a first connecting segment 310, a flexible connecting segment 320, and a second connecting segment 330 connected in sequence. The first connecting segment 310 is fixedly installed on the mounting housing and is used to connect with external electrical components. The second connecting segment 330 is connected to the moving contact 100 so as to move synchronously with the moving contact 100. The stationary contact 200 is connected to the second connecting conductor 400.

[0049] In other words, the first connecting section 310, the flexible connecting section 320, the second connecting section 330, the moving contact 100, the stationary contact 200, and the second connecting conductor 400 are connected in sequence. Therefore, when the moving contact 100 and the stationary contact 200 are closed, the first connecting section 310, the flexible connecting section 320, the second connecting section 330, the moving contact 100, the stationary contact 200, and the second connecting conductor 400 form a conductive loop. In this loop, a current distribution in a specific direction is achieved, thereby improving the influence of electrodynamic force on the contact system.

[0050] During this process, since the current direction of the first connecting section 310 is opposite to that of the second connecting section 330, and the current direction is the same as that of the second connecting conductor 400, the electromagnetic force generated between the conductors interacts, thereby increasing the contact pressure between the moving contact 100 and the stationary contact 200. Therefore, based on the characteristic of automatically increasing the contact pressure as the current increases, the withstand capability of the circuit breaker 10 under high current short circuit conditions is effectively improved, avoiding contact separation or poor contact due to electromagnetic repulsion.

[0051] In addition, the first connecting conductor 300 has a flexible deformation capability. The first connecting section 310 is fixedly installed in the mounting housing and establishes a stable connection with the external electrical components. The second connecting section 330 is directly connected to the moving contact 100 to ensure that the moving contact 100 can maintain good conductivity during movement. The flexible connecting section 320, as a key transition component, deforms as the second connecting section 330 moves with the moving contact 100. This ensures both continuity of conductivity and sufficient flexibility to adapt to the displacement changes of the moving contact 100. As a result, during the closing and opening switching process of the circuit breaker 10, the conductive path where the flexible connecting section 320 is located can move synchronously with the moving contact 100 without generating additional mechanical stress that hinders operation.

[0052] Therefore, the circuit breaker 10 provided in this embodiment of the invention, through the reasonable arrangement of the conductor structure and the relationship between the current direction, achieves the purpose of enhancing the contact pressure of the contacts by utilizing the electromagnetic force generated by the current itself in the closed state, thereby improving the short-time withstand performance and operational reliability of the circuit breaker 10. Based on the above design, the circuit breaker 10 not only meets the requirements of high short-circuit current protection, but also takes into account the advantages of simple structure and reliable operation, making it suitable for application scenarios with high requirements for electrical safety performance.

[0053] like Figure 3 As shown, the flexible connection segment 320 includes a first connection portion 321, a deformation portion 322, and a second connection portion 323 connected in sequence. The first connection portion 321 is connected to the first connection segment 310, and the second connection portion 323 is connected to the second connection segment 330.

[0054] It should be noted that the flexible connection segment 320 is made of multiple layers of conductive foil, which can be, but is not limited to, copper foil.

[0055] Specifically, the flexible connection segment 320 is made of multiple conductive foils using a lamination process, and the two ends of the flexible connection segment 320 are subjected to diffusion welding to increase the hardness of the ends. After the two ends of the flexible connection segment 320 are hardened, they are plated with silver to form the first connection portion 321 and the second connection portion 323, respectively.

[0056] Therefore, in this embodiment, the first connecting part 321 can realize the electrical and mechanical connection with the first connecting section 310 to ensure that the current can be stably introduced; the second connecting part 323 can establish a fixed connection with the second connecting section 330 to maintain the continuous energization of the moving contact 100 during movement; and the deformation part 322 located between the two is the core component for realizing the flexibility of the structure. Since the deformation part 322 has the ability to bend and deform, it can generate corresponding deformation when the moving contact 100 moves up and down to avoid stress concentration or movement interference caused by rigid connection, which can ensure the stability of circuit connection and the smooth movement of moving contact 100.

[0057] In detail, the deformable part 322 is provided with a first through hole 3221, and the first connecting section 310 is provided with a second through hole 311, with the first through hole 3221 and the second through hole 311 being provided correspondingly.

[0058] It should be noted that the circuit breaker 10 also includes an insulating element 500, which is movably disposed in the first through hole 3221 and the second through hole 311 and connected to the moving contact 100, for driving the moving contact 100 to move toward or away from the stationary contact 200, so as to close or open the circuit.

[0059] In this embodiment, the first through hole 3221 and the second through hole 311 are aligned to provide an installation channel for the through-mounting of the insulating member 500. Therefore, one end of the insulating member 500 is connected to the drive mechanism, and the other end is connected to the moving contact 100, so that when the drive mechanism drives the insulating member 500 to move in a straight line, it can transmit force to the moving contact 100, thereby controlling the moving contact 100 to move toward or away from the stationary contact 200, and completing the closing or opening operation of the circuit breaker 10.

[0060] It should also be noted that the connection between the insulating component 500 and the top of the moving contact 100 can be, but is not limited to, a threaded connection. For example... Figure 1 and Figure 7 As shown, the circuit breaker 10 also includes a vacuum bulb 600, in which both the moving contact 100 and the stationary contact 200 are disposed. The moving contact 100 is cylindrical and is movably disposed within the vacuum bulb 600.

[0061] In addition, the first connecting part 321 is provided with a first mounting hole 3211, such as Figure 4 As shown, the first connecting section 310 is provided with a second mounting hole 312. The first mounting hole 3211 and the second mounting hole 312 are used to fix and cooperate with the fastener 700.

[0062] The second connecting part 323 is provided with a third mounting hole 3231, such as Figure 5 As shown, the second connecting section 330 is provided with a fourth mounting hole 331, and the third mounting hole 3231 and the fourth mounting hole 331 are used to fix and cooperate with the fastener 700.

[0063] It is understandable that fastener 700 can be, but is not limited to, bolts, screws, etc.

[0064] Therefore, in this embodiment, by sequentially passing the fastener 700 through the first mounting hole 3211 and the second mounting hole 312, the first connecting part 321 and the first connecting member can be firmly connected; similarly, by sequentially passing the fastener 700 through the third mounting hole 3231 and the fourth mounting hole 331, the second connecting part 323 and the second connecting segment 330 can be firmly connected.

[0065] like Figure 4 As shown, the first connecting section 310 is provided with a mounting groove 313, the second mounting hole 312 is provided on the bottom wall of the mounting groove 313, and the first connecting part 321 and the partial deformable part 322 are embedded in the mounting groove 313.

[0066] In this embodiment, the first connecting portion 321 and the partially deformable portion 322 of the flexible connecting segment 320 are embeddable in the mounting groove 313, and are reliably fixed by cooperating with the fastener 700 through the second mounting hole 312 provided on the bottom wall of the groove. Therefore, it is not only ensured that the flexible connecting segment 320 will not detach from the first connecting segment 310 when subjected to tension or bending deformation, but also that its offset amplitude during dynamic processes can be effectively controlled; in addition, the mounting groove 313 can also provide an embedding space for the first connecting portion 321 of the flexible connecting segment 320 and its adjacent partially deformable area, thereby reducing the degree of protrusion of the connecting part in the overall device and avoiding structural damage caused by external interference or vibration.

[0067] It should also be noted that the first connecting section 310 is also provided with a sixth mounting hole 314 for installing fasteners 700 to fix them in place with external electrical components.

[0068] It is worth mentioning that, such as Figure 8 The closing status and Figure 9 As shown in the open state, when the moving contact 100 and the stationary contact 200 are closed, part of the deformable part 322 is located within the entire mounting groove 313. However, when the moving contact 100 and the stationary contact 200 are open, part of the deformable part 322 that is far away from the first connecting part 321 will move to the outside of the mounting groove 313.

[0069] In this embodiment, the flexible connection section 320 is L-shaped when the circuit is closed. During the vertical up-and-down movement of the moving contact 100, the flexible connection section 320 is further bent under the drive of the second connection section 330, so as to allow the part of the flexible connection section 320 connected to the second connection section 330 to follow the vertical up-and-down movement of the second connection section 330.

[0070] Of course, in other embodiments of this utility model, such as Figure 10 and Figure 11 As shown, the flexible connecting section 320 can also be arc-shaped. Therefore, during the vertical up-and-down movement of the moving contact 100, the flexible connecting section 320 can be compressed or extended under the drive of the second connecting section 330, so that the first connecting conductor 300 can adapt to the displacement change of the moving contact 100.

[0071] Furthermore, such as Figure 5 As shown, the second connecting section 330 is provided with a clamping part 332, which clamps the moving contact 100.

[0072] The second connecting section 330 is essentially a clamping member with conductive function. Therefore, by clamping the moving contact 100 with the clamping part 332, the second connecting section 330 and the moving contact 100 can be firmly connected, and the conductivity between the second connecting section 330 and the moving contact 100 can be ensured.

[0073] Specifically, the second connecting section 330 is also provided with at least two clamping arms 333 connected to the clamping part 332. The clamping arms 333 are provided with fifth mounting holes 334. The fifth mounting holes 334 of the at least two clamping arms 333 are used to fix and cooperate with the fastener 700 so that the clamping part 332 clamps the moving contact 100.

[0074] It is also worth noting that in the linear motion direction of the moving contact 100 toward the stationary contact 200, the first connecting section 310, the flexible connecting section 320, the second connecting section 330, the moving contact 100, the stationary contact 200, and the second connecting conductor 400 are arranged in sequence, and in the closed state, the distance between the first connecting section 310 and the second connecting section 330 reaches its maximum.

[0075] Therefore, when the moving contact 100 and the stationary contact 200 are closed, the flexible connection section 320 can maintain its flexible deformation capability while forming a smooth current transition path with adjacent components, and at this time, the flexible connection section 320 is in a relatively tight state. When the circuit is open, since the arrangement direction of each component is consistent with the movement trajectory of the moving contact 100, the flexible connection section 320 can naturally bend upwards to adapt to the displacement changes of the moving contact 100, without causing stress concentration or mechanical jamming due to structural misalignment. Thus, it can be seen that it can effectively improve the stability and response speed of the circuit breaker 10 during dynamic operation while ensuring conductive continuity and mechanical flexibility.

[0076] In summary, this utility model embodiment provides a circuit breaker 10 in which the current direction of the first connecting section 310 and the second connecting section 330 is opposite, but the current direction of the second connecting conductor 400 is the same. Therefore, under the interaction of the electromagnetic force generated between the conductors, the contact pressure between the moving contact 100 and the stationary contact 200 is enhanced. Thus, based on the characteristic of automatically increasing the contact pressure as the current increases, the withstand capability of the circuit breaker 10 under high current short circuit conditions is effectively improved, and contact separation or poor contact due to electromagnetic repulsion is avoided.

[0077] Furthermore, the first connecting conductor 300 is a structure with flexible deformation capability. The first connecting section 310 is fixedly installed in the mounting housing and establishes a stable connection with the external electrical components. The second connecting section 330 is directly connected to the moving contact 100 to ensure that the moving contact 100 can maintain good conductivity during movement. The flexible connecting section 320 can ensure conductivity continuity and has sufficient flexibility to adapt to the displacement changes of the moving contact 100. Thus, during the closing and opening switching process of the circuit breaker 10, the conductive path where the flexible connecting section 320 is located can move synchronously with the moving contact 100 without generating additional mechanical stress that hinders the operation.

[0078] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A circuit breaker characterized by, include: Moving contact (100); Stationary contact (200); A first connecting conductor (300) includes a first connecting segment (310), a flexible connecting segment (320), and a second connecting segment (330) connected in sequence. The first connecting segment (310) is fixedly mounted on the mounting housing and used to connect with external electrical components. The second connecting segment (330) is connected to the moving contact (100) to move synchronously with the moving contact (100). At least a portion of the flexible connecting segment (320) is used to deform when the second connecting segment (330) moves with the moving contact (100). The second connecting conductor (400) is connected to the stationary contact (200); When the moving contact (100) and the stationary contact (200) are closed, the first connecting section (310), the flexible connecting section (320), the second connecting section (330), the moving contact (100), the stationary contact (200), and the second connecting conductor (400) form a conductive circuit. The current directions of the first connecting section (310) and the second connecting section (330) are opposite, and the current direction of the second connecting conductor (400) is the same.

2. The circuit breaker of claim 1, wherein, The flexible connecting segment (320) includes a first connecting part (321), a deformable part (322), and a second connecting part (323) connected in sequence. The first connecting part (321) is connected to the first connecting segment (310), and the second connecting part (323) is connected to the second connecting segment (330). The deformable part (322) is used to bend under the drive of the second connecting part (323) so that the part of the deformable part (322) connected to the second connecting part (323) moves synchronously with the second connecting part (323); or the deformable part (322) is used to extend or compress under the drive of the second connecting part (323).

3. The circuit breaker of claim 2, wherein, The deformable part (322) is provided with a first through hole (3221), and the first connecting section (310) is provided with a second through hole (311). The first through hole (3221) and the second through hole (311) are provided correspondingly. The circuit breaker also includes an insulating element (500), which is movably disposed in the first through hole (3221) and the second through hole (311) and connected to the moving contact (100) to drive the moving contact (100) to move toward or away from the stationary contact (200) to close or open the circuit.

4. The circuit breaker of claim 2, wherein, The first connecting part (321) is provided with a first mounting hole (3211), and the first connecting section (310) is provided with a second mounting hole (312). The first mounting hole (3211) and the second mounting hole (312) are used to fix and cooperate with the fastener (700). And / or, the second connecting part (323) is provided with a third mounting hole (3231), and the second connecting section (330) is provided with a fourth mounting hole (331), the third mounting hole (3231) and the fourth mounting hole (331) are used to fix and cooperate with the fastener (700).

5. The circuit breaker of claim 4, wherein, The first connecting segment (310) is provided with a mounting groove (313), the second mounting hole (312) is provided on the bottom wall of the mounting groove (313), and the first connecting part (321) and part of the deformable part (322) are embedded in the mounting groove (313).

6. The circuit breaker of any one of claims 1-5, wherein, The flexible connector segment (320) is made of multiple layers of conductive foil.

7. The circuit breaker of claim 1, wherein, The second connecting section (330) is provided with a clamping part (332), which clamps the moving contact (100).

8. The circuit breaker of claim 7, wherein, The second connecting section (330) is also provided with at least two clamping arms (333) connected to the clamping part (332). The clamping arms (333) are provided with fifth mounting holes (334). The fifth mounting holes (334) of at least two clamping arms (333) are used to fix and cooperate with fasteners (700) so that the clamping part (332) clamps the moving contact (100).

9. The circuit breaker of claim 1, wherein, The first connecting section (310) is also provided with a sixth mounting hole (314) for installing a fastener (700) to fix it in place with the external electrical component.

10. The circuit breaker of claim 1, wherein, In the linear motion direction of the moving contact (100) toward the stationary contact (200), the first connecting segment (310), the soft connecting segment (320), the second connecting segment (330), the moving contact (100), the stationary contact (200), and the second connecting conductor (400) are arranged in sequence.

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