An elastic connecting piece and a circuit breaker

Abstract

The application relates to the technical field of low-voltage electrical apparatus, in particular to an elastic connecting piece and a circuit breaker, which comprises integrally-formed first extending sections, a first bending part, second extending sections and a second bending part; the first ends of the first extending sections are connected with the first bending part, and the second ends are connected with the second extending sections through the second bending part; the first extending sections are provided with first contact parts abutting against external structures, and the first bending part and the second bending part are deformed under extrusion to increase the abutting force of the first contact parts and the external structures. The embodiment of the application realizes quick assembly and power taking through the elastic connecting piece, is beneficial to improving assembly efficiency, and meets the needs of miniaturization development of the circuit breaker.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, and more specifically, to a flexible connector and a circuit breaker. Background Technology

[0002] In existing technologies, circuit breakers typically draw power internally by welding power supply wires to the terminal block. However, as circuit breakers continue to miniaturize, their internal space becomes increasingly compact, making the welding and installation of power supply wires particularly difficult. This not only increases assembly difficulty but may also affect production efficiency and reliability, thus adversely impacting the overall performance of the circuit breaker. Therefore, there is an urgent need to propose an improved power supply structure to meet the demands of circuit breaker miniaturization. Utility Model Content

[0003] The purpose of this application is to provide a flexible connector and a circuit breaker, which enables rapid assembly and power supply through the contact between the flexible connector and the external structure, thereby improving assembly efficiency and meeting the needs of circuit breaker miniaturization.

[0004] The embodiments of this application are implemented as follows:

[0005] In a first aspect, embodiments of this application provide an elastic connector, including an integrally formed first extension, a first bend, a second extension, and a second bend; a first end of the first extension is connected to the first bend, and a second end is connected to the second extension via the second bend; the first extension has a first contact portion that abuts against an external structure, and the first bend and the second bend are deformed by compression to increase the contact force between the first contact portion and the external structure.

[0006] As an optional implementation, the elastic connector is installed in a circuit breaker; the circuit breaker has a mounting groove; a circuit board is inserted into the mounting groove; the second extension has a second contact portion, which abuts against the circuit board to deform the second bending portion and generate an elastic force.

[0007] As an optional implementation, the external structure includes a terminal block disposed inside the circuit breaker; at least a portion of the first extension is located between the terminal block and the circuit board; the elastic connector further includes a fixed terminal block connected to the first bent portion; when the circuit board moves along the insertion direction, the circuit board pushes the fixed terminal block closer to the bottom of the mounting groove; at the same time, it drives the first extension block to come closer to the terminal block, thereby increasing the contact area between the first contact portion and the terminal block.

[0008] As an optional implementation, the portion of the second extension away from the second bend forms a third bend, such that the free end of the second extension extends close to the first contact portion; the second contact portion includes a protruding portion formed by the third bend.

[0009] As an optional implementation, the portion of the second extension away from the second bend forms a fourth bend, such that the free end of the second extension extends away from the first contact portion; the second contact portion includes a protruding portion formed by the fourth bend.

[0010] As an optional implementation, the first contact portion includes a raised structure that extends toward the terminal block.

[0011] As an optional implementation, the circuit board has a notch, and the fixed wiring segment is inserted into the notch along the direction perpendicular to the circuit board.

[0012] As an optional implementation, the fixed wiring section has a wire groove on the side near the circuit board, and the wire groove extends in a direction perpendicular to the circuit board; the power supply wire is disposed in the wire groove.

[0013] As an optional implementation, the fixed terminal segment is connected to the end of the power-collecting wire; or, the second contact portion is connected to a conductive portion provided on the circuit board, so that the power-collecting wire soldered to the circuit board is electrically connected to the elastic connector.

[0014] As an alternative implementation, the wire channel extends from one side of the circuit board to the other.

[0015] Secondly, embodiments of this application provide a circuit breaker, including a power supply conductor, a terminal block, a circuit board, a main circuit board, and the aforementioned elastic connector; one end of the power supply conductor is electrically connected to the elastic connector, and the other end is electrically connected to the main circuit board; an electromagnet is provided on the main circuit board, and the electromagnet has a square iron core.

[0016] The beneficial effects of the embodiments of this application include:

[0017] The elastic connector provided in this application embodiment utilizes an integrated molding structure design and the elastic deformation capability of the bending portion to achieve a reliable electrical connection between the power supply wire and the terminal block. This avoids the problems of high assembly difficulty and unreliable connection associated with traditional welding methods. The structure of this application embodiment is not only suitable for the design requirements of miniaturized circuit breakers but also significantly improves product assembly efficiency and electrical connection stability, demonstrating promising prospects for industrial applications. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is one of the structural schematic diagrams of the circuit breaker according to an embodiment of this application;

[0020] Figure 2 This is a second schematic diagram of the circuit breaker structure according to an embodiment of this application;

[0021] Figure 3 This is one of the structural schematic diagrams of the elastic connector in the embodiments of this application;

[0022] Figure 4 This is a second schematic diagram of the structure of the elastic connector according to an embodiment of this application;

[0023] Figure 5 This is the third schematic diagram of the structure of the elastic connector in the embodiments of this application;

[0024] Figure 6 This is the third schematic diagram of the circuit breaker in the embodiments of this application;

[0025] Figure 7 This is the fourth schematic diagram of the circuit breaker in the embodiments of this application;

[0026] Figure 8 This is the fourth schematic diagram of the structure of the elastic connector in the embodiments of this application;

[0027] Figure 9 This is the fifth schematic diagram of the circuit breaker in the embodiments of this application.

[0028] Icons: 100-Elastic connector; 101-Power supply wire; 102-Terminal block; 103-Fixed connection section; 104-First extension section; 105-First bend; 106-Mounting slot; 107-First contact part; 108-Circuit board; 109-Second bend; 110-Second extension section; 111-Second contact part; 112-Third bend; 113-Free end; 114-Fourth bend; 115-Wire groove; 116-Main circuit board; 117-Square iron core. Detailed Implementation

[0029] 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, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0031] It should be noted that similar reference numerals 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. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] In existing technologies, circuit breakers typically draw power by welding power supply wires to the terminal block. However, as circuit breakers continue to miniaturize, their internal space becomes increasingly compact, making the welding and installation of power supply wires particularly difficult. This not only increases assembly difficulty but may also affect production efficiency and reliability, ultimately negatively impacting the overall performance of the circuit breaker.

[0034] Therefore, this application proposes a flexible connector and circuit breaker to improve the power supply structure and assembly method, so as to meet the needs of circuit breaker miniaturization.

[0035] The elastic connector 100 provided in this application embodiment includes an integrally formed first extension 104, a first bending portion 105, a second extension 110, and a second bending portion 109; the first end of the first extension 104 is connected to the first bending portion 105, and the second end is connected to the second extension 110 through the second bending portion 109; the first extension 104 has a first contact portion 107 that abuts against an external structure, and the first bending portion 105 and the second bending portion 109 are deformed by compression to increase the contact force between the first contact portion 107 and the external structure.

[0036] Specifically, refer to Figure 1 As shown, the flexible connector 100 is used to connect the power take-up conductor 101 and the terminal block 102 in the circuit breaker, as shown in the figure. Figure 3 , Figure 4 as well as Figure 5 As shown, the elastic connector 100 includes an integrally formed fixed connection section 103, a first extension section 104, and a first bent portion 105; see reference Figure 2 As shown, the fixed connection section 103 is located inside the circuit breaker and connected to the power supply conductor 101; the first end of the first extension section 104 is connected to the fixed connection section 103 via a first bend 105, and the second end extends away from the fixed connection section 103; the first extension section 104 has a first contact portion 107, as shown in the figure. Figure 6 , Figure 7 As shown, the first contact portion 107 abuts against the terminal block 102, so that the first bending portion 105 deforms to generate an elastic force.

[0037] The external structure is a conductive structure, including a conductive terminal block 102 or other conductive wiring components, such as a conductive copper busbar. Power is drawn from the external structure through the elastic contact between the first contact portion 107 and the external structure.

[0038] It should be noted that the elastic connector 100 in this embodiment is integrally bent from conductive metal and includes a fixed wiring section 103, a first extension section 104 and a first bending portion 105.

[0039] For example, refer to Figure 2 As shown, the fixed terminal block 103 can be used to connect to the power supply wire 101, thereby realizing the electrical connection between the power supply wire 101 and the terminal block 102. It can be crimped, plugged in, or welded as needed; this embodiment does not impose any special limitations on this, and those skilled in the art can choose according to their needs. When it is necessary to weld the power supply wire 101 to the fixed terminal block 103, the welding can be pre-done outside the circuit breaker to avoid welding operations in the confined space inside the circuit breaker housing, which is inconvenient to operate and results in poor welding quality due to limited welding surface area.

[0040] Reference Figure 2As shown, another function of the fixed terminal block 103 is to provide a fixed base point for the entire flexible connector 100, enabling reliable installation of the flexible connector 100. For example, the fixed terminal block 103 can be fixed to the circuit board 108.

[0041] The first end of the first extension 104 is connected to the fixed wiring segment 103 via the first bend 105, and the second end extends away from the fixed wiring segment 103. The first bend 105, as an elastic deformation area, deforms when the first contact portion 107 contacts the terminal block 102, thereby enabling the first contact portion 107 to elastically abut against the terminal block 102.

[0042] Therefore, the technical material of the elastic connector 100 needs to have good elasticity and fatigue strength. For example, copper sheet or other alloy metal sheet can be used.

[0043] It should be noted that the elastic connector 100 adopts an integrated design, which reduces the number of parts. During the initial installation of the elastic connector 100, only the first bending portion 105 deforms, generating elastic force. At this time, the first contact portion 107 elastically abuts against the terminal block 102. Furthermore, the resistance is low at this point, therefore the insertion force of the elastic connector 100 is small. As the elastic connector 100 continues to be inserted, the second contact portion 111 abuts against the circuit board, causing the second bending portion 109 to also bend and generate elastic force. At this time, both the first bending portion 105 and the second bending portion 109 are in a bent state, increasing the abutment pressure between the first contact portion 107 and the terminal block 102. The above-described configuration of this embodiment not only replaces the traditional welding power supply method but also avoids the defects of traditional spring contacts where excessive elastic abutment force during installation leads to assembly difficulties, or insufficient elastic abutment force leads to ineffective abutment. The elastic force generated by the elastic connector 100 in this embodiment ensures a stable electrical connection at the contact surface, preventing loosening or poor contact.

[0044] The working principle of this embodiment is explained as follows: The elastic connector 100 is fixedly connected to the circuit board 108. The circuit board 108 moves downward relative to the terminal block 102. During the movement, the first contact part 107 abuts against the terminal block 102. At the same time, the first bending part 105 begins to deform, and at this time the second bending part 109 does not deform, ensuring that the initial insertion force is relatively small, which facilitates assembly. The movement continues until the second contact part 111 abuts against the circuit board, so that the second bending part 109 begins to deform, increasing the contact pressure between the first contact part 107 and the terminal block 102 to ensure a stable electrical connection.

[0045] The beneficial effects that the embodiments of this application can produce are as follows:

[0046] The elastic connector 100 and circuit breaker provided in this application embodiment, through an integrated molding structural design, simplify the complex assembly process required by traditional welding methods, significantly improving assembly efficiency and product consistency. Simultaneously, the elastic connector 100, through the elastic deformation capabilities of the first bending portion 105 and the second bending portion 109, generates continuous elastic pressure when the first contact portion 107 abuts against the external structure, effectively enhancing the stability of the electrical connection and avoiding poor contact problems caused by vibration, thermal expansion and contraction, or installation errors. Furthermore, the embodiment of this application features a compact structural design and high space utilization, well adapting to the trend of circuit breaker miniaturization, and possesses good buffering performance, mitigating the effects of mechanical shock and thermal stress, thereby improving the long-term operational reliability and service life of the product, and demonstrating significant engineering application value.

[0047] Reference Figure 2 As shown, in one optional embodiment, the circuit breaker has a mounting slot 106; a circuit board 108 is inserted into the mounting slot 106; a second contact portion 111 is provided on the second extension 110, and the second contact portion 111 abuts against the circuit board 108 so that the second bending portion 109 deforms to generate an elastic force.

[0048] For example, refer to Figure 8 As shown, the second contact portion 111 is connected to the conductive portion provided on the circuit board 108, so that the power-taking wire 101 soldered to the circuit board 108 is electrically connected to the elastic connector. That is to say, the power-taking wire 101 is soldered to the first side of the circuit board 108, and on the second side of the circuit board, the fixed wiring segment 103 is fixed to the circuit board 108 and electrically connected. The first contact portion 107 abuts against the terminal block 102, so that the circuit board 108 and the terminal block 102 are electrically connected. The abutment of the second contact portion 111 against the circuit board 108 can effectively increase the contact pressure between the first contact portion and the terminal block 102.

[0049] In this embodiment, the circuit board 108 is inserted into the mounting slot 106 and abuts against the fixed wiring segment 103. At this time, there is a gap between the circuit board 108 and the wiring board 102, that is, there is space between them. The first extension segment 104 and the second extension segment 110 are located in this space. The second extension segment 110 extends towards the circuit board 108 through the second bend 109, so that the second contact portion 111 on the second extension segment 110 can abut against the circuit board 108. Since the deformation of the second bend 109 can generate elastic force, the second contact portion 111 and the circuit board 108 can achieve elastic abutment, but no conductive connection is made.

[0050] It should be noted that in this embodiment, the second contact portion 111 abuts against the circuit board 108; when the second bending portion 109 undergoes bending deformation, it can generate a downward elastic force; this elastic force acts on the entire elastic connector 100 structure, further enhancing the contact force between the first contact portion 107 and the terminal block 102. Therefore, although there is no conductive connection between the second contact portion 111 and the circuit board 108, it improves the electrical connection stability between the first contact portion 107 and the terminal block 102 through structural linkage.

[0051] This application provides an improved flexible connector 100 and circuit breaker, which adds a second extension 110, a second bend 109, and a second contact 111 to the original structure. The second contact 111 physically abuts against the circuit board 108 inserted into the mounting groove 106, and the elastic deformation of the second bend 109 applies a structural reaction force to the entire flexible connector 100, thereby enhancing the contact force between the first contact 107 and the terminal block 102. This design not only effectively improves the stability and reliability of the electrical connection but also achieves efficient space utilization, simplifies the assembly process, and enhances the product's adaptability in complex environments.

[0052] Furthermore, in this embodiment, the first contact portion 107 and the second contact portion 111 adopt an elastic contact method, eliminating the need for welding and reducing human error. The components achieve self-positioning and self-locking through preset deformation and springback, improving assembly consistency and yield. This embodiment is also easy to maintain and replace; the elastic connector 100 is modularly designed for easy disassembly and assembly. When it is necessary to replace the circuit board 108 or adjust the connection status, the operation can be completed simply by plugging and unplugging.

[0053] As an optional implementation method, refer to Figure 2 , Figure 6 as well as Figure 7 As shown, when the circuit board 108 moves along the insertion direction, the circuit board 108 pushes the fixed wiring segment 103 closer to the bottom of the mounting groove 106; at the same time, it drives the first extension segment 104 to come closer to the wiring board 102, so that the contact surface between the first contact portion 107 and the wiring board 102 increases.

[0054] It should be noted that when the circuit board 108 moves along the insertion direction, it pushes the fixed wiring segment 103 closer to the bottom of the mounting slot 106. At this time, the first contact portion 107 first abuts against the terminal block 102. As the circuit board 108 continues to be inserted, the first extension segment 104 approaches the terminal block 102, increasing the contact area between the first contact portion 107 and the terminal block 102. At this time, the second contact portion 111 abuts against the circuit board 108. After the second contact portion 111 abuts against the circuit board 108, the elastic force generated by the deformation of the second bending portion 109 reacts with the elastic connector 100 to increase the contact strength between the first contact portion 107 and the terminal block 102.

[0055] Therefore, the implementation of this application not only increases the contact surface between the elastic connector 100 and the terminal block 102, but also significantly increases the contact pressure between the first contact portion 107 and the terminal block 102. Overall, it improves the reliability of the electrical connection, reduces poor contact problems caused by vibration or thermal expansion and contraction, and greatly enhances the reliability and stability of the electrical connection.

[0056] Reference Figure 3 As shown, in an optional implementation, the portion of the second extension 110 away from the second bend 109 forms a third bend 112, so that the free end 113 of the second extension 110 extends close to the first contact portion 107; the second contact portion 111 includes a protruding portion formed by the third bend 112.

[0057] It should be noted that the third bend 112 causes the free end 113 of the second extension 110 to form a "hook-shaped" or "bent protrusion" structure facing the first contact 107; the protruding part on this structure is the second contact 111, which is used to abut against the surface of the circuit board 108; when the circuit board 108 is inserted into the mounting slot 106, the second contact 111 contacts the circuit board 108 more reliably through this protruding structure; the second bend 109 undergoes elastic deformation, generating a reverse force, thereby enhancing the contact pressure between the first contact 107 and the terminal block 102.

[0058] The third bending portion 112 in this embodiment guides the free end 113 of the second extension 110 toward the direction close to the first contact portion 107, which helps to optimize the force path of the entire elastic connector 100. Under the push of the circuit board 108, a more stable support point is formed between the second contact portion 111 and the circuit board 108, thereby more effectively transmitting the elastic force to the first contact portion 107 and improving the quality of electrical connection.

[0059] Reference Figure 5As shown, in an optional implementation, the portion of the second extension 110 away from the second bend 109 forms a fourth bend 114, so that the free end 113 of the second extension 110 extends away from the first contact portion 107; the second contact portion 111 includes a protruding portion formed by the fourth bend 114.

[0060] Unlike the above embodiments, in this application embodiment, the second extension segment 110 extends away from the first contact portion 107 by means of the fourth bending portion 114, and the protruding portion formed by the fourth bending portion 114 abuts against the circuit board 108, which can increase the contact area with the circuit board 108 and improve the contact stability.

[0061] Reference Figure 3 , Figure 5 As shown, in one optional implementation, the first contact portion 107 includes a protruding structure that extends toward the terminal block 102.

[0062] It should be noted that the first contact portion 107 in this embodiment is a key part of the elastic connector 100 for achieving electrical connection and mechanical contact with the terminal block 102. The protruding structure included in the first contact portion 107 in this embodiment extends toward the terminal block 102, that is, it is closer to and fits the terminal block 102 in the assembled state.

[0063] It should be noted that the raised structure provides a higher initial contact pressure compared to a flat contact. After the elastic connector 100 is subjected to overall force, the raised portion can further embed into the microstructure of the terminal block 102 surface, enhancing friction and conductivity; and avoiding poor contact caused by vibration, thermal expansion, or installation errors.

[0064] It should be noted that the protruding structure in this embodiment is preferably integrally formed on the surface of the elastic connector 100 by a stamping process, without the need for additional assembly.

[0065] As an alternative implementation, the circuit board 108 has a notch, and the fixed wiring segment 103 is inserted into the notch along the direction perpendicular to the circuit board 108.

[0066] It should be noted that the fixed wiring segment 103 can be inserted into the notch to achieve snap-fit ​​assembly between the elastic structural component and the circuit board 108.

[0067] During installation, the fixed wiring section 103, circuit board 108 and power supply wire 101 can be connected and fixed first. Then, the circuit board 108 is inserted into the mounting slot 106 inside the circuit breaker. At this time, the first extension section 104 abuts against the side wall of the mounting slot 106, causing the first bending part 105 to deform and generate elastic force.

[0068] Reference Figure 4 As shown, in one optional implementation, the fixed wiring section 103 is provided with a wire groove 115 on the side near the circuit board 108, and the wire groove 115 extends in the direction perpendicular to the circuit board 108; the power supply wire 101 is disposed in the wire groove 115; the wire groove 115 extends from one side of the circuit board 108 to the other side.

[0069] The wire groove 115 in this embodiment provides precise positioning for the power supply wire 101, ensuring that the wire can be accurately placed in the same position each time it is assembled; this preset path simplifies the wire installation process, reduces the need for manual adjustment, and improves assembly efficiency.

[0070] Furthermore, the wire groove 115 in this embodiment can effectively prevent the power supply wire 101 from moving or shifting during installation or use. It also provides additional physical protection, preventing damage to the wire from external impacts or vibrations and extending the wire's service life.

[0071] Reference Figure 1 , Figure 9 As shown in the figure, this application embodiment provides a circuit breaker, including a power supply conductor 101, a terminal block 102, a circuit board 108, a main circuit board 116, and the aforementioned elastic connector 100; one end of the power supply conductor 101 is electrically connected to the elastic connector 100, and the other end is electrically connected to the main circuit board 116; an electromagnet is disposed on the main circuit board 116, and the electromagnet has a square iron core 117. It should be noted that, due to the influence of other structural components inside the circuit breaker, the arrangement space of the electromagnet is compact. The square iron core 117 can save space in the height direction, which is conducive to achieving a compact arrangement when the height space is small, and is beneficial to achieving a compact layout of the circuit breaker.

[0072] The circuit breaker includes the same structure and beneficial effects as the resilient connector 100 in the foregoing embodiments. The structure and beneficial effects of the resilient connector 100 have been described in detail in the foregoing embodiments and will not be repeated here.

[0073] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An elastic connector, characterized in that, It includes an integrally formed first extension section (104), a first bend (105), a second extension section (110), and a second bend (109); the first end of the first extension section (104) is connected to the first bend (105), and the second end is connected to the second extension section (110) through the second bend (109); the first extension section (104) has a first contact portion (107) that abuts against an external structure, and the first bend (105) and the second bend (109) are deformed by compression to increase the contact force between the first contact portion (107) and the external structure.

2. The elastic connector according to claim 1, characterized in that, The elastic connector is installed in the circuit breaker; the circuit breaker has a mounting groove (106); a circuit board (108) is inserted in the mounting groove (106); the second extension (110) has a second contact portion (111), the second contact portion (111) abuts against the circuit board (108) to deform the second bending portion (109) and generate elastic force.

3. The elastic connector according to claim 2, characterized in that, The external structure includes a terminal block (102) disposed inside the circuit breaker; at least a portion of the first extension (104) is located between the terminal block (102) and the circuit board (108); the elastic connector also includes a fixed terminal section (103) connected to the first bent portion (105); when the circuit board (108) moves along the insertion direction, the circuit board (108) pushes the fixed terminal section (103) closer to the bottom of the mounting groove (106); at the same time, it drives the first extension (104) to come closer to the terminal block (102), thereby increasing the contact surface between the first contact portion (107) and the terminal block (102).

4. The elastic connector according to claim 2, characterized in that, The portion of the second extension segment (110) away from the second bend (109) forms a third bend (112), such that the free end (113) of the second extension segment (110) extends close to the first contact portion (107); the second contact portion (111) includes a protruding portion formed by the third bend (112).

5. The elastic connector according to claim 2, characterized in that, The portion of the second extension segment (110) away from the second bend (109) forms a fourth bend (114), causing the free end (113) of the second extension segment (110) to extend away from the first contact portion (107); the second contact portion (111) includes a protruding portion formed by the fourth bend (114).

6. The elastic connector according to claim 3, characterized in that, The first contact portion (107) includes a protruding structure that extends toward the terminal block (102).

7. The elastic connector according to claim 3, characterized in that, The circuit board (108) has a notch, and the fixed wiring segment (103) is inserted into the notch along the direction perpendicular to the circuit board (108).

8. The elastic connector according to claim 3, characterized in that, The fixed wiring section (103) is provided with a wire groove (115) on the side near the circuit board (108), and the wire groove (115) extends in a direction perpendicular to the circuit board (108); it also includes a power supply wire (101), which is disposed in the wire groove (115).

9. The elastic connector according to claim 8, characterized in that, The fixed connection segment (103) is connected to the end of the power-collecting wire (101); or, the second contact portion (111) is connected to the conductive portion provided on the circuit board (108), so that the power-collecting wire (101) soldered to the circuit board (108) is electrically connected to the elastic connector.

10. A circuit breaker, characterized in that, It includes a power supply wire (101), a terminal block (102), a circuit board (108), a main circuit board, and an elastic connector (100) as described in any one of claims 1-9; one end of the power supply wire (101) is electrically connected to the elastic connector (100), and the other end is electrically connected to the main circuit board; an electromagnet is provided on the main circuit board, and the electromagnet has a square iron core.

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