Wiring structure and circuit breaker

Abstract

The utility model provides a wiring structure and a circuit breaker, and relates to the technical field of electrical equipment. The wiring structure comprises a wiring board, a main wire and an electricity taking wire. The wiring board comprises a main wiring part and a power-taking wiring part which are connected with each other and are different from each other. One end of the main wire is electrically connected with the main wiring part, and the other end of the main wire is electrically connected with a main loop. One end of the electricity-taking wire is electrically connected with the electricity-taking wiring part, and the other end of the electricity-taking wire is used for being electrically connected with an electricity-taking component. The main wire and the electricity-taking wire can be electrically connected with different wiring areas in the wiring board, so that the main wire and the wiring board can be prevented from extruding the electricity-taking wire, and the possibility that the electricity-taking wire is flattened or the cross section is suddenly changed due to welding pressure of resistance welding and the like can be reduced; therefore, the possibility that the electricity-taking wire is broken from the welding position can be reduced, and the reliability of the electric connection relation between the electricity-taking wire and the wiring board can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical equipment, and particularly relates to a wiring structure and a circuit breaker. BACKGROUND

[0002] The circuit breaker is an important switching device in the power mechanism, and can close, carry and open the current in the circuit. When a fault such as leakage, overload or short circuit occurs in the system, the circuit breaker can realize the cut-off of the circuit by tripping to prevent the fault from expanding. The residual current operating circuit breaker as one kind of circuit breaker can be used to detect the leakage of the circuit connected to the residual current operating circuit breaker and to protect the circuit from leakage.

[0003] The residual current operating circuit breaker often includes power taking components such as electronic circuit boards and test resistors. These power taking components need to be electrically connected to the wiring board connected to the main circuit through the power taking wire, so as to realize the power taking of the power taking components from the main circuit. The wiring board is connected to the main circuit through the main lead. Therefore, the power taking wire and the main lead need to be electrically connected to the wiring board.

[0004] However, in the related art, the power taking wire and the main lead are easily damaged when electrically connected to the wiring board, so that the power taking wire is easily broken from the welding position, affecting the reliability of the electrical connection relationship between the power taking wire and the wiring board. Innovative content

[0005] The present application provides a wiring structure and a circuit breaker, which can reduce the possibility of breaking the power taking wire from the welding position, and facilitate to improve the reliability of the electrical connection relationship between the power taking wire and the wiring board.

[0006] In a first aspect, the present application provides a wiring structure applied to a circuit breaker. The circuit breaker includes a main circuit and a power taking component. The wiring structure includes a wiring board, a main lead and a power taking wire. The wiring board includes a main wiring part and a power taking wiring part which are connected to each other and different from each other. One end of the main lead is electrically connected to the main wiring part, and the other end of the main lead is used to be electrically connected to the main circuit. One end of the power taking wire is electrically connected to the power taking wiring part, and the other end of the power taking wire is used to be electrically connected to the power taking component.

[0007] According to the above scheme, the terminal block can be divided into two different terminal regions, i.e., the main terminal region and the power taking terminal region. Based on the structure of the terminal block, when one end of the main conductor is electrically connected to the main terminal region and one end of the power taking conductor is electrically connected to the power taking terminal region, the main conductor and the power taking conductor can be electrically connected to different terminal regions in the terminal block. Therefore, the power taking conductor does not need to be clamped between the main conductor and the terminal block, and the power taking conductor and the main conductor do not need to be electrically connected to the same region of the terminal block by resistance welding. In this way, the main conductor and the terminal block can avoid extruding the power taking conductor, and the possibility of the power taking conductor being damaged due to the welding pressure of resistance welding, such as being crushed or having a sudden change in cross section, can be reduced, so that the possibility of the power taking conductor being broken from the welding position can be reduced, and the reliability of the electrical connection between the power taking conductor and the terminal block can be improved.

[0008] In a possible design, the main terminal region and the power taking terminal region are integrally formed; or the main terminal region and the power taking terminal region are separately formed.

[0009] According to the above scheme, the integrally formed process can save the assembly process of the main terminal region and the power taking terminal region. The main terminal region and the power taking terminal region are formed in a separate formation manner, so that when one of the main terminal region and the power taking terminal region is damaged, only the damaged one needs to be disassembled and replaced in the subsequent process, without the need to scrap the entire terminal block for replacement, thereby reducing the cost of repairing the terminal block.

[0010] In a possible design, the power taking component includes an electronic circuit board and a test resistor. The number of the power taking terminal regions is two, and the two power taking terminal regions are located on two sides of the main terminal region. The number of the power taking conductors is two, and one power taking terminal region is connected to the electronic circuit board through one power taking conductor, and the other power taking terminal region is connected to the test resistor through the other power taking conductor.

[0011] According to the above scheme, two power taking components can be powered through one terminal block, and the applicability of the terminal block is improved. In addition, the two power taking terminal regions are located on two sides of the main terminal region, so that the power taking conductor for connecting the electronic circuit board can be electrically connected to one power taking terminal region on one side of the main terminal region, and the power taking conductor for connecting the test resistor can be electrically connected to the other power taking terminal region on the other side of the main terminal region. In this way, the possibility of interference between the two power taking conductors can be reduced.

[0012] In a possible design, the number of the main conductors, the number of the power taking conductors, and the number of the terminal blocks are the same as the number of poles of the circuit breaker. One main conductor, one power taking conductor, and one terminal block are provided for each pole of the circuit breaker. Each main conductor and each power taking conductor are electrically connected to the terminal block of the corresponding pole, and the main conductors of the poles are also connected to the main circuit, and the power taking conductors of the poles are also connected to the power taking component.

[0013] According to the scheme, the number of wiring structures can be set according to the pole number of the circuit breaker, the wiring structures of each pole are connected with the power taking component, the requirement of the power taking component on the voltage phase number can be met, and the power taking of the power taking component from the main circuit can be conveniently realized.

[0014] In a possible design, the power taking wire and the power taking wiring part are welded by means of tin soldering.

[0015] The tin soldering is used to weld the power taking wire and the power taking wiring part, and no welding pressure is applied to the power taking wire, so that the power taking wire is not deformed by extrusion. In this way, the power taking wire is not easy to break or fracture during production, transportation and delivery, so that the electronic circuit board and the test resistor can normally take power from the main circuit, thereby ensuring the leakage function of the circuit breaker and the normal work of the test device.

[0016] In a possible design, the power taking wiring part comprises a first welding surface, and the power taking wire comprises a second welding surface, and the area of the first welding surface is equivalent to the area of the second welding surface.

[0017] According to the scheme, the area of the first welding surface is relatively small compared with the area of the second welding surface, so that the process performance of tin soldering is improved, the tin soldering between the power taking wiring part and the power taking wire is facilitated, and the probability of incomplete welding or virtual welding between the power taking wiring part and the power taking wire is reduced.

[0018] In a possible design, the main lead wire and the main wiring part have a first connection, the power taking wire and the power taking wiring part have a second connection, and the first connection and the second connection have a gap.

[0019] According to the scheme, when the main lead wire and the main wiring part are welded, the welding between the power taking wire and the power taking wiring part is not affected, and when the power taking wire and the power taking wiring part are welded, the welding between the main lead wire and the main wiring part is not affected, so that the reliability of the welding of the main lead wire and the power taking wire to the wiring board is improved.

[0020] In a possible design, the extension direction of the main wiring part is consistent with the extension direction of the power taking wiring part, so that the part of the main lead wire connected with the main wiring part is parallel to the part of the power taking wire connected with the power taking wiring part.

[0021] According to the scheme, the extension direction of the lead wire, the extension direction of the power taking wire, the extension direction of the main wiring part and the extension direction of the power taking wiring part are consistent. In this way, the connection of the lead wire and the power taking wire does not occupy additional space in the width direction of the wiring board, and the miniaturization of the circuit breaker is facilitated.

[0022] In a possible design, the wiring board is formed by stamping.

[0023] The stamping forming process is simple, and the processing efficiency of the wiring board can be improved.

[0024] In a second aspect, the application provides a circuit breaker, comprising a main circuit, a power taking component, and the wiring structure in the first aspect. The wiring board is electrically connected to the main circuit through the main lead wire, and the power taking component is electrically connected to the wiring board through the power taking wire.

[0025] The circuit breaker provided in the above second aspect and each possible design of the above second aspect has the beneficial effects of the circuit breaker provided in the above first aspect and each possible embodiment of the above first aspect, which will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a combination structure schematic diagram of a wiring structure provided by an embodiment of the application.

[0027] Figure 2 is an exploded view of a wiring structure provided by an embodiment of the application.

[0028] Figure 3 is a structure schematic diagram of a wiring board provided by an embodiment of the application.

[0029] REFERENCE SIGNS:

[0030] 100, wiring structure;

[0031] 110, wiring board; 111, main wiring part; 1111, external plate; 1112, transition plate; 1113, internal plate; 112, power taking wiring part; 1121, first welding surface; 120, main lead wire; 130, power taking wire. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the application clearer, the technical scheme in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are some embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the specification of the application is only for the purpose of describing specific embodiments and is not intended to limit the application; the terms "comprise" and "have" and any variations thereof in the specification and claims of the application and the description of the drawings are intended to cover non-exclusive inclusion.

[0034] Reference to“an embodiment” herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase“in an embodiment” in various places in the specification are not necessarily referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will recognize that the embodiments described herein can be combined with other embodiments.

[0035] The term“and / or” in this document is used to describe one or more of the associated objects. For example, A and / or B can mean: A alone, B alone, or A and B together.

[0036] The positional words appearing in the following description are the directions shown in the drawings, and do not limit the specific structure of the flow limiting module of the application. For example, in the description of the application, the terms“center”,“longitudinal”,“transverse”,“length”,“width”,“thickness”,“upper”,“lower”,“front”,“rear”,“left”,“right”,“vertical”,“horizontal”,“top”,“bottom”,“inner”,“outer”, and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0037] In addition, the terms“first”,“second”, and the like in the specification and claims of the application or the above drawings are used to distinguish different objects, and are not used to describe a particular order, and can explicitly or implicitly include one or more of the features.

[0038] In the description of the application, unless otherwise specified, the meaning of“a plurality of” is two or more (including two), and similarly,“a plurality of groups” means two or more groups (including two groups).

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, "connected" or "connected" in a mechanical structure can refer to a physical connection. For example, a physical connection can be a fixed connection, such as a fixed connection via a barrier, such as a fixed connection via screws, bolts, or other barrier. A physical connection can also be a detachable connection, such as a mutual snap-fit ​​connection. A physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. In addition to referring to a physical connection, "connected" or "connected" in a circuit structure can also refer to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate element, as long as the circuit is interconnected. It can also refer to internal communication between two elements. In addition to signal connection through a circuit, a signal connection can also refer to signal connection through a media medium, such as radio waves. Those skilled in the art can understand the specific meanings of the above terms in this application based on specific circumstances.

[0040] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0041] Figure 1 This is a schematic diagram of a wiring structure 100 provided in an embodiment of the present application. The present application provides a circuit breaker, including a main circuit, a power supply component and a Figure 1 The wiring structure 100 shown in FIG. 1 includes a wiring board 110 , a main conductor 120 , and a power supply line 130 . The wiring board 110 is electrically connected to the main circuit via the main conductor 120 , and the power supply component is electrically connected to the wiring board 110 via the power supply line 130 .

[0042] The main circuit of a circuit breaker refers to the circuit containing the moving and stationary contacts. When the moving and stationary contacts are in contact, the main circuit conducts current. Conversely, when the moving and stationary contacts separate, the main circuit interrupts current.

[0043] The power-taking components can be components such as electronic circuit boards and test resistors that require power from the main circuit. The electronic circuit board is an important component for implementing leakage protection, and the test resistor is an important component in the test device circuit.

[0044] The specific structure of the wiring structure 100, the connection between the components in the wiring structure 100 and the main circuit of the circuit breaker, and the connection between the components in the wiring structure 100 and the power supply components will be described in detail below with reference to the accompanying drawings.

[0045] Figure 2is an exploded view of a wiring structure 100 provided by an embodiment of the present application, Figure 3 is a structural schematic view of a wiring board 110 provided by an embodiment of the present application, please refer to Figures 1 to 3 The wiring structure 100 comprises the wiring board 110, a main lead 120 and a power taking lead 130. The wiring board 110 comprises a main wiring part 111 and a power taking wiring part 112 which are connected to each other and different from each other. One end of the main lead 120 is electrically connected to the main wiring part 111, and the other end of the main lead 120 is used to be electrically connected to a main circuit. One end of the power taking lead 130 is electrically connected to the power taking wiring part 112, and the other end of the power taking lead 130 is used to be electrically connected to a power taking component.

[0046] As shown in Figure 1 and Figure 2 , the main wiring part 111 can be substantially in a Z shape.

[0047] Exemplarily, as shown in Figure 3 , the main wiring part 111 can comprise an external board 1111, a transition board 1112 and an internal board 1113 which are connected to each other. The external board 1111 is opposite to a position of an external wiring port of a circuit breaker, and the external board 1111 is used to be electrically connected to an external power supply lead or a load lead which extends into the external wiring port. The transition board 1112 is connected between the external board 1111 and the internal board 1113, and facilitates the main wiring part 111 to be in a preset shape, so that the main wiring part 111 can be reasonably placed in a limited space in the circuit breaker. The internal board 1113 is located in the circuit breaker, and the internal board 1113 is used to electrically connect the main lead 120 and the main circuit, so that the wiring board 110 can be in an electrified structure through the electrical connection relationship with the main circuit.

[0048] The power taking wiring part 112 can be in a plate structure. The power taking wiring part 112 can be connected to any one of the aforementioned external board 1111, transition board 1112 and internal board 1113. In the case that the external board 1111 needs to be electrically connected to the external power supply lead or the load lead, and the internal board 1113 needs to be electrically connected to the main lead 120, the power taking wiring part 112 can be connected to the transition board 1112. In this way, the possibility of interference between the electrical connection of the external board 1111 to the external power supply lead or the load lead and the electrical connection of the power taking wiring part 112 to the power taking lead 130 can be reduced, and the possibility of interference between the electrical connection of the internal board 1113 to the main lead 120 and the electrical connection of the power taking wiring part 112 to the power taking lead 130 can also be reduced.

[0049] The main wire 120 and the power taking wire 130 are both electric wires wrapped with an insulation layer. Since the current flowing through the main wire 120 is larger, and the current flowing through the power taking wire 130 is smaller, the cross-sectional area of the end of the main wire 120 after removing the insulation layer is larger than the cross-sectional area of the end of the power taking wire 130 after removing the insulation layer. Exemplarily, the cross-sectional area of the end of the main wire 120 after removing the insulation layer can be greater than 1.5 square millimeters, and the cross-sectional area of the end of the power taking wire 130 after removing the insulation layer can be less than 0.5 square millimeters.

[0050] The main wire 120 and the main wiring portion 111 can be electrically connected by resistance welding, soldering, or the like. The main wire 120 and the main circuit can be electrically connected by the main wire 120 being electrically connected to a moving contact in the main circuit, or by the main wire 120 being electrically connected to a stationary contact in the main circuit. The manner in which the main wire 120 and the main circuit are electrically connected can be based on related art, and the present application does not limit this.

[0051] The power taking wire 130 and the power taking wiring portion 112, and the power taking wire 130 and the power taking component, can be electrically connected by welding. The present application does not limit the specific process of welding.

[0052] In the embodiments of the present application, the wiring board 110 includes the main wiring portion 111 and the power taking wiring portion 112 that are connected to each other, and the main wiring portion 111 and the power taking wiring portion 112 are different from each other. In this way, the wiring board 110 can be divided into two different wiring areas, the main wiring portion 111 and the power taking wiring portion 112. Based on this structure of the wiring board 110, when one end of the main wire 120 is electrically connected to the main wiring portion 111, and one end of the power taking wire 130 is electrically connected to the power taking wiring portion 112, the main wire 120 and the power taking wire 130 can be electrically connected to different wiring areas in the wiring board 110. Therefore, the power taking wire 130 does not need to be clamped between the main wire 120 and the wiring board 110, and resistance welding does not need to be used to electrically connect the power taking wire 130 and the main wire 120 to the same area of the wiring board 110.

[0053] In this way, the main wire 120 and the wiring board 110 can avoid pressing the power taking wire 130, and the possibility of the power taking wire 130 being damaged due to the welding pressure of resistance welding, such as being pressed flat or the cross section being suddenly changed, can be reduced. Therefore, the possibility of the power taking wire 130 being broken at the welding position can be reduced, and the reliability of the electrical connection between the power taking wire 130 and the wiring board 110 can be improved.

[0054] In some embodiments, the main wiring portion 111 and the power taking wiring portion 112 can be integrally formed, so as to save the assembly process of the main wiring portion 111 and the power taking wiring portion 112. In this case, the wiring board 110 can be formed by stamping.

[0055] The stamping forming process is simple, and the processing efficiency of the terminal block 110 can be improved.

[0056] In some other embodiments, the main terminal portion 111 and the power taking terminal portion 112 can be formed separately. In this case, the main terminal portion 111 and the power taking terminal portion 112 can be connected by welding, screw connection or the like to form the terminal block 110.

[0057] The main terminal portion 111 and the power taking terminal portion 112 are formed in a separate forming mode, so that when one of the main terminal portion 111 and the power taking terminal portion 112 is damaged, only the damaged one needs to be disassembled and replaced subsequently, without the need to scrap the entire terminal block 110 for replacement, thereby reducing the cost of repairing the terminal block 110.

[0058] The embodiments of the present application do not limit the forming mode of the main terminal portion 111 and the power taking terminal portion 112.

[0059] It is introduced above that the power taking component can be an electronic circuit board and a test resistor and the like structure having the power taking demand from the main circuit. In some possible cases, the power taking component in the circuit breaker can only include the electronic circuit board. In this case, the number of the power taking terminal portions 112 and the power taking wires 130 can each be one, one end of the power taking wire 130 is electrically connected to the power taking terminal portion 112, and the other end of the power taking wire 130 is electrically connected to the electronic circuit board.

[0060] In some other possible cases, the power taking component in the circuit breaker can only include the test resistor. In this case, the number of the power taking terminal portions 112 and the power taking wires 130 can each be one, one end of the power taking wire 130 is electrically connected to the power taking terminal portion 112, and the other end of the power taking wire 130 is electrically connected to the test resistor.

[0061] In some other possible cases, the power taking component in the circuit breaker not only includes the electronic circuit board but also includes the test resistor. In this case, the number of the power taking terminal portions 112 can be two, and the two power taking terminal portions 112 are separately located on the two sides of the main terminal portion 111. The number of the power taking wires 130 can be two, one power taking terminal portion 112 is connected to the electronic circuit board through one power taking wire 130, and the other power taking terminal portion 112 is connected to the test resistor through the other power taking wire 130.

[0062] As Figure 2 and Figure 3As shown, the main wiring part 111 is in a rectangular plate structure, and the direction of the wide side of the main wiring part 111 can be referred to as the width direction of the main wiring part 111. Based on this, the two power taking wiring parts 112 are located on the two sides of the main wiring part 111, that is, one power taking wiring part 112 is located on one side of the main wiring part 111 in the width direction, and the other power taking wiring part 112 is located on the other side of the main wiring part 111 in the width direction.

[0063] In this embodiment, the number of power taking wiring parts 112 and the number of power taking lines 130 are set to two. In the case where the power taking component includes an electronic circuit board and a test resistor, one power taking line 130 can connect one power taking wiring part 112 with the electronic circuit board, and the other power taking line 130 can connect the other power taking wiring part 112 with the test resistor. In this way, the power taking of two power taking components can be realized through one wiring board 110, and the applicability of the wiring board 110 is improved.

[0064] In addition, the two power taking wiring parts 112 are located on the two sides of the main wiring part 111, so that the power taking line 130 for connecting with the electronic circuit board can be electrically connected with one power taking wiring part 112 on one side of the main wiring part 111, and the power taking line 130 for connecting with the test resistor can be electrically connected with the other power taking wiring part 112 on the other side of the main wiring part 111. In this way, the possibility of interference between the two power taking lines 130 can be reduced.

[0065] For the circuit breaker, the types of the circuit breaker include single-pole circuit breaker, two-pole circuit breaker, three-pole circuit breaker and four-pole circuit breaker, and one wiring structure 100 can be provided for each pole of the circuit breaker. Based on this, in some embodiments, the number of main lead lines 120, the number of power taking lines 130 and the number of wiring boards 110 can be the same as the number of poles of the circuit breaker. One main lead line 120, one power taking line 130 and one wiring board 110 are provided for each pole of the circuit breaker. Each main lead line 120 and each power taking line 130 are electrically connected with the wiring board 110 of the corresponding pole, and the main lead line 120 of each pole is also connected with the main circuit, and the power taking line 130 of each pole is also connected with the power taking component.

[0066] One main lead line 120, one power taking line 130 and one wiring board 110 are provided for each pole of the circuit breaker, that is, one wiring structure 100 is provided for each pole of the circuit breaker. The number of wiring structures 100 can be set according to the number of poles of the circuit breaker, and the wiring structure 100 of each pole is connected with the power taking component, which can meet the requirement of the power taking component for the number of voltage phases, so that the wiring structure 100 can facilitate the power taking of the power taking component with different requirements for the number of voltage phases from the main circuit.

[0067] Since the main lead 120 and the power taking lead 130 are connected to different connection areas of the connection board 110 in the present application, the main lead 120 and the power taking lead 130 are not pressed together to be connected to the connection board 110, and thus the power taking lead 130 does not need to be subjected to special requirements for welding pressure when being welded to the power taking connection part 112, and thus the power taking lead 130 can be welded to the power taking connection part 112 by means of soldering.

[0068] Since the power taking lead 130 and the power taking connection part 112 are welded by means of soldering, the power taking lead 130 is not subjected to welding pressure, and thus is not subjected to extrusion deformation. In this way, the power taking lead 130 is not easily broken or fractured during production, transportation and delivery, even if subjected to vibration, jolt and impact, so that the electronic circuit board and the test resistor can normally take power from the main circuit, thereby ensuring the leakage function of the circuit breaker and the normal operation of the test device.

[0069] In the case that the power taking lead 130 and the power taking connection part 112 are welded by means of soldering, in some embodiments, as shown in Figure 3 the power taking connection part 112 includes a first welding surface 1121, and the power taking lead 130 includes a second welding surface, and the area of the first welding surface 1121 is equivalent to the area of the second welding surface.

[0070] The first welding surface 1121 is a surface of the power taking connection part 112 for welding with the power taking lead 130, and the second welding surface is a surface of the power taking lead 130 for welding with the power taking connection part 112. The first welding surface 1121 and the second welding surface can both be flat surfaces, and the first welding surface 1121 and the second welding surface can be in surface contact.

[0071] The area of the first welding surface 1121 being equivalent to the area of the second welding surface means that the area of the first welding surface 1121 is equal to the area of the second welding surface, or the area of the first welding surface 1121 is slightly larger than the area of the second welding surface, or the area of the first welding surface 1121 is slightly smaller than the area of the second welding surface. In short, the area of the first welding surface 1121 is basically the same as the area of the second welding surface.

[0072] The area of the first welding surface 1121 is set to be equivalent to the area of the second welding surface, so that the area of the first welding surface 1121 and the area of the second welding surface are less different, which helps to improve the process performance of soldering, facilitates to improve the firmness of soldering between the power taking connection part 112 and the power taking lead 130, and reduces the probability of failure to be welded or virtual welding.

[0073] In some embodiments, the main lead 120 and the main wiring portion 111 have a first connection, the power taking lead 130 and the power taking wiring portion 112 have a second connection, and the first connection and the second connection have a gap therebetween.

[0074] Based on the foregoing description, the main wiring portion 111 can include an external plate 1111, a transition plate 1112, and an internal plate 1113 connected to each other. Since the power taking wiring portion 112 can be connected to any one of the external plate 1111, the transition plate 1112, and the internal plate 1113, and the external plate 1111 and the internal plate 1113 are not in the same plane as shown in the figure, the gap between the first connection and the second connection can be a gap in the width direction of the wiring board 110, or a gap in the arrangement direction of the external plate 1111 and the internal plate 1113, which is not limited in the embodiments of the present application.

[0075] The gap between the first connection and the second connection makes the welding of the main lead 120 and the main wiring portion 111 not affect the welding between the power taking lead 130 and the power taking wiring portion 112, and makes the welding of the power taking lead 130 and the power taking wiring portion 112 not affect the welding between the main lead 120 and the main wiring portion 111, thereby facilitating to improve the reliability of the welding of the main lead 120 and the power taking lead 130 to the wiring board 110.

[0076] According to some embodiments of the present application, the extension direction of the main wiring portion 111 is consistent with the extension direction of the power taking wiring portion 112, so that the part of the main lead 120 used for connecting with the main wiring portion 111 is parallel to the part of the power taking lead 130 used for connecting with the power taking wiring portion 112.

[0077] In this way, the extension direction of the lead, the extension direction of the power taking lead 130, the extension direction of the main wiring portion 111, and the extension direction of the power taking wiring portion 112 are consistent. In this way, the connection of the lead and the power taking lead 130 does not additionally occupy the space in the width direction of the wiring board 110, thereby facilitating to realize the miniaturization of the circuit breaker.

Claims

1. A wiring structure, applied to a circuit breaker, comprising a main circuit and a power supply component, characterized in that: include: A terminal block comprising a main terminal portion and a power connection portion that are interconnected and distinct from each other; a main conductor, one end of which is electrically connected to the main connection portion, and the other end of which is electrically connected to the main circuit; A power line, one end of which is electrically connected to the power-taking connection portion, and the other end of which is electrically connected to the power-taking component.

2. The wiring structure according to claim 1, wherein: The main connection portion and the power connection portion are integrally formed; or, the main connection portion and the power connection portion are separately formed.

3. The wiring structure according to claim 1, wherein: The power taking component includes an electronic circuit board and a test resistor; There are two power connection parts, and the two power connection parts are located on both sides of the main connection part; There are two power supply wires. One power supply connection portion is connected to the electronic circuit board through one power supply wire, and the other power supply connection portion is connected to the test resistor through another power supply wire.

4. The wiring structure according to claim 1, wherein: The number of the main conductors, the number of the take-off wires and the number of the terminal blocks are all the same as the number of poles of the circuit breaker; Each pole of the circuit breaker is correspondingly provided with a main conductor, a take-off wire and a terminal block; Each of the main conductors and each of the power supply lines is electrically connected to the terminal block of the corresponding pole, the main conductors corresponding to each pole are also connected to the main circuit, and the power supply lines corresponding to each pole are also electrically connected to the power supply component.

5. The wiring structure according to any one of claims 1 to 4, characterized in that: The power taking wire and the power taking connection part are welded by soldering.

6. The wiring structure according to claim 5, characterized in that: The power-taking connection portion includes a first welding surface, the power-taking line includes a second welding surface, and the area of ​​the first welding surface is equivalent to the area of ​​the second welding surface.

7. The wiring structure according to any one of claims 1 to 4, characterized in that: A first connection point is defined between the main conductor and the main connection portion, a second connection point is defined between the power taking wire and the power taking connection portion, and a gap is defined between the first connection point and the second connection point.

8. The wiring structure according to any one of claims 1 to 4, characterized in that: The extension direction of the main connection part is consistent with the extension direction of the power connection part, so that the part of the main wire used to connect with the main connection part is parallel to the part of the power connection line used to connect with the power connection part.

9. The wiring structure according to any one of claims 1 to 4, characterized in that: The terminal block is formed by a stamping process.

10. A circuit breaker, characterized in that: It comprises a main circuit, a power taking component and the wiring structure according to any one of claims 1 to 9; The terminal block is electrically connected to the main circuit via the main conductor, and the power-taking component is electrically connected to the terminal block via the power-taking wire.

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