Circuit breaker

Abstract

The circuit breaker comprises a shell, a switch device and a conductive contact arranged in the shell, the shell is provided with an input port and an output port which are arranged on the same side in a spaced mode, the input port and the output port are each provided with two slots, and at least one slot at the input port is internally provided with a first connecting elastic piece; a second connecting elastic sheet is arranged in at least one slot at the output port; the switch device comprises a driving mechanism, a hinge transmission mechanism and a trigger elastic piece, the trigger elastic piece is connected with the output end of the hinge transmission mechanism, and the driving mechanism is used for driving the hinge transmission mechanism to drive the trigger elastic piece to be in contact with or disconnected from the conductive contacts, so that the first connecting elastic piece and the second connecting elastic piece are connected or disconnected in a one-to-one correspondence mode. According to the invention, rapid plugging is realized through the connecting elastic sheet, and the input / output port is connected with the panel at the same side, so that the structure of the circuit breaker is simplified, and the step of wiring operation on the circuit breaker in the traditional power distribution operation is omitted.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical technology, and more particularly to a circuit breaker. Background Technology

[0002] In the generation, transmission, and use of electricity, power distribution is an extremely important link. The power distribution system includes transformers and various high- and low-voltage electrical equipment, with low-voltage circuit breakers being a widely used type of electrical appliance. Circuit breakers can disconnect faulty circuits in the power grid based on signals such as current and voltage, thereby ensuring the normal operation of all lines in the power grid and meeting the normal power needs of users.

[0003] When in use, circuit breakers are usually installed in a housing used for power distribution. Depending on the usage scenario, circuit breakers need to be wired. In order to meet the wiring requirements, wiring ports need to be set, which makes the existing circuit breaker structure complex. Summary of the Invention

[0004] The main objective of this invention is to provide a circuit breaker that addresses the problems of existing circuit breakers requiring wiring operations and having complex structures in different application scenarios.

[0005] To achieve the above objectives, the present invention proposes a circuit breaker, comprising a housing, a switching device, and conductive contacts disposed within the housing. The housing has an input port and an output port spaced apart on the same side. Each input port and the output port has two slots, and at least one slot at the input port contains a first connecting spring, and at least one slot at the output port contains a second connecting spring. The switching device includes a driving mechanism, a hinged transmission mechanism, and a trigger spring. The trigger spring is connected to the output end of the hinged transmission mechanism. The driving mechanism drives the hinged transmission mechanism to cause the trigger spring to contact or disconnect with the conductive contacts, thereby correspondingly connecting or disconnecting the first and second connecting springs.

[0006] In one embodiment, the hinged transmission mechanism includes a first hinge assembly, a transmission rod, and a second hinge assembly hinged sequentially, with the trigger spring connected to the end of the second hinge assembly away from the first hinge assembly; the driving mechanism drives the first hinge assembly or the second hinge assembly to rotate so that the trigger spring contacts or disconnects from the conductive contact.

[0007] In one embodiment, the first hinge assembly includes a first hinge rod, the first hinge rod including a first connecting segment and a second connecting segment connected to each other and arranged at an angle, the connection between the first connecting segment and the second connecting segment being hinged to the housing, and the end of the second connecting segment away from the first connecting segment being hinged to the transmission rod.

[0008] In one embodiment, the drive mechanism includes a mechanical switch assembly, which includes a control rod and a connecting rod. The control rod, the connecting rod, and the first connecting segment are sequentially hinged together, and the control rod is rotatably connected to the housing. The control rod also has an operating handle protruding from the housing.

[0009] In one embodiment, the driving mechanism includes an electronic switch assembly, which includes a first push rod and a driving module. The driving module is used to drive the first push rod to move in a first direction to push the first hinge assembly and cause the trigger spring to contact the conductive contact.

[0010] In one embodiment, the switching device further includes a stop block for limiting the transmission rod.

[0011] In one embodiment, the first hinge assembly includes a lever and a second hinge rod. The two ends of the second hinge rod are respectively hinged to the trigger spring of the transmission rod. The lever is hinged to the second hinge rod. A limit notch is formed on the lever. When the trigger spring contacts the conductive contact, the end of the transmission rod is engaged in the limit notch, and the stop block abuts against the end of the transmission rod.

[0012] In one embodiment, the switching device further includes an elastic element connected between the trigger spring and the housing; the driving module is further configured to drive the first push rod to move along a first direction to push the stop block away from the lever, so that the trigger spring is disengaged from the conductive contact under the action of the elastic element.

[0013] In one embodiment, the circuit breaker further includes an overcurrent protector, which includes a drive coil and a second push rod. The drive coil is energized to drive the second push rod to move in a first direction to push the second hinge assembly and cause the trigger spring to disengage from the conductive contact.

[0014] In one embodiment, the circuit breaker further includes an arc extinguishing device connected to the input port or the output port; and / or, the housing has a mounting groove located between the input port and the output port, and a core plate is provided in the mounting groove, with multiple connecting contact points provided on the core plate.

[0015] In this invention, when the circuit breaker is directly inserted into the panel, both the input and output ports are simultaneously connected to the panel. Only the input and output components of the panel need to be wired; no additional wiring is required for the circuit breaker. Furthermore, the structure, by incorporating connecting springs within the housing's slots, allows for quick connection and disconnection between the circuit breaker and the panel through a plug-and-play mechanism. The fact that the input and output ports are located on the same side simplifies the circuit breaker's structure and reduces the need for additional wiring required when the output port is on the opposite side, thus simplifying power distribution operations. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the circuit breaker in an embodiment of the present invention;

[0018] Figure 2 This is a schematic cross-sectional view of the circuit breaker in an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the circuit breaker in the conducting state in an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the circuit breaker in the open state in an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the electronic switch assembly driven in an embodiment of the present invention;

[0022] Figure 6 This is a schematic diagram illustrating the principle of the circuit breaker and panel interaction in an embodiment of the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of the low-voltage plug-in assembly in an embodiment of the present invention;

[0024] Figure 8 This is a schematic diagram of the engagement between the low-voltage connection spring and the connection contact point in an embodiment of the present invention.

[0025] Explanation of icon numbers:

[0026]

[0027]

[0028] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0031] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0034] In the generation, transmission, and use of electricity, power distribution is an extremely important link. The power distribution system includes transformers and various high- and low-voltage electrical equipment, with low-voltage circuit breakers being a widely used type of electrical appliance. Circuit breakers can disconnect faulty circuits in the power grid based on signals such as current and voltage, thereby ensuring the normal operation of all lines in the power grid and meeting the normal power needs of users.

[0035] Circuit breakers are typically installed in power distribution enclosures during use. Depending on the application, wiring operations are required, necessitating the installation of wiring terminals, which complicates the existing circuit breaker structure. Furthermore, when installing household electrical control systems (also known as distribution boxes), circuit breakers must first be mounted on DIN rails before wiring to each breaker's terminals. When multiple circuit breakers need to be installed and wired, the large number of breaker types further complicates the wiring process.

[0036] This invention proposes a circuit breaker that aims to solve the problems of existing circuit breakers requiring wiring operations and having complex structures in different application scenarios.

[0037] like Figure 1 and Figure 2 As shown, in one embodiment, the circuit breaker 100 includes a housing 1, a switching device 2, and conductive contacts 13 disposed within the housing 1. The housing 1 has an input port 11 and an output port 12 spaced apart on the same side. Each input port 11 and output port 12 has two slots. At least one slot at the input port 11 is provided with a first connecting spring 111, and at least one slot at the output port 12 is provided with a second connecting spring 121. The switching device 2 includes a driving mechanism 3, a hinged transmission mechanism 4, and a trigger spring 5. The trigger spring 5 is connected to the output end of the hinged transmission mechanism 4. The driving mechanism 3 is used to drive the hinged transmission mechanism 4 to cause the trigger spring 5 to contact or disconnect with the conductive contacts 13, thereby connecting or disconnecting the first connecting spring 111 and the second connecting spring 121 one by one.

[0038] In this embodiment, the input port 11 and the output port 12 are located on the same side of the circuit breaker 100 and are spaced apart from each other; the housing 1 has two slots at the input port 11, at least one of which is provided with a first connecting spring 111, and two slots at the output port 12, at least one of which is provided with a second connecting spring 121, and the first connecting spring 111 and the second connecting spring 121 are connected in a one-to-one correspondence.

[0039] Please refer to the above. Figure 6The circuit breaker 100 is used in conjunction with a panel, which includes a first busbar group 201, a second busbar group 202, input components and output components (for example, it may include AC output components and DC output components). For example, the circuit breaker 100 has the following implementations.

[0040] 1. The circuit breaker 100 has a first connecting spring 111 and a second connecting spring 121. The first busbar group 201 serves as the connection structure between the AC input terminal and the first output terminal. The first busbar group 201 includes two busbars ① and ②. The output port 12 of the circuit breaker 100 located at the first input terminal is connected to busbars ① and ② respectively. Specifically, the circuit breaker 100 at the input terminal includes a first connecting spring 111 and a second connecting spring 121 connected to each other. Two circuit breakers 100 are set at the input terminal. The first connecting spring 111 of one circuit breaker 100 is connected to the input terminal of the input component for connecting the live wire (L), and the second connecting spring 121 is connected to busbar ①. At this time, the input component and busbar ① are connected through the circuit breaker 100, so that busbar ① is the live wire. The first connecting spring 111 of the other circuit breaker 100 is connected to the input terminal of the input component for connecting the neutral wire (N), and the second connecting spring 121 is connected to busbar ②, so that busbar ② is the neutral wire. Through the above arrangement, busbars ① and ② can transmit AC power.

[0041] II. The circuit breaker 100 has two first connecting springs 111 and two second connecting springs 121. The input port 11 of the second circuit breaker 100, located at the first output terminal, is connected to busbars ① and ② respectively. Specifically:

[0042] The circuit breaker 100 at the AC output terminal includes two first connecting springs 111 and two second connecting springs 121. The two first connecting springs 111 are connected to busbars ① and ② respectively, so that the circuit breaker 100 can draw AC power from busbars ① and ②. The two second connecting springs 121 are connected to the input terminal and the output terminal of the output component respectively. The two first connecting springs 111 and the two second connecting springs 121 are connected in a one-to-one correspondence. The output component can be connected to external AC electrical appliances. This arrangement forms an AC power transmission circuit.

[0043] 3. The second busbar group 202 includes a connection structure between the AC input terminal and the second output terminal. The second busbar group 202 includes two busbars ③ and ④. The electrical connection relationship between the circuit breaker 100 and busbars ③ and ④ is in the same principle as the electrical connection relationship between the circuit breaker 100 and busbars ① and ② in Implementation 2.

[0044] It should be noted that the above panel structure is based on the premise that the first output terminal is AC and the second output terminal is DC. That is, this panel structure is applicable to power consumption scenarios where both AC and DC power are used. If the current type output from the first and second output terminals is changed, thus changing the power consumption scenario, the types of converters and output components in the panel need to be adapted according to the specific power consumption scenario. Here, we will not elaborate on other power consumption scenarios.

[0045] In actual use, when the circuit breaker 100 is directly inserted into the panel, the input port 11 and the output port 12 are connected to the panel at the same time. Only the input and output components of the panel need to be wired, and no additional wiring is required for the circuit breaker 100.

[0046] With the above structure, by setting a connecting spring in the slot of the housing 1, the circuit breaker 100 can be quickly connected and quickly disconnected from the panel by plugging and unplugging. The input port 11 and the output port 12 are set on the same side, so that the circuit breaker 100 is connected to the panel on the same side. This not only simplifies the structure, but also reduces the trouble of additional wiring required when the output port 12 of the circuit breaker 100 is set on the other side in the traditional structure, thereby simplifying the power distribution operation.

[0047] In one embodiment, a mounting groove 14 is provided on the housing 1, located between the input port 11 and the output port 12. A low-voltage plug-in assembly 15 is disposed within the mounting groove 14, and the low-voltage plug-in assembly 15 includes a plurality of low-voltage connection springs 151. The mounting groove 14 is further provided on the housing 1 between the input port 11 and the output port 12, and the low-voltage connection springs 151 are disposed within the mounting groove 14. Through the structural arrangement of the low-voltage plug-in assembly 15 built into the mounting groove 14, the core board 15 is insulated from the connection springs of the input port 11 and the connection springs of the output port 12.

[0048] Specifically, please refer to the following: Figure 7 and Figure 8The circuit breaker 100 includes a low-voltage plug-in assembly 15, which includes four low-voltage connection springs 151. The four low-voltage connection springs 151 are divided into two groups. One group of low-voltage connection springs 151 is connected to the electronic switch assembly 32 to receive external on / off control signals. Under the drive of the on / off control signals, the electronic switch assembly 32 can be controlled to perform on / off control actions to control the on / off of the circuit breaker 100. Another set of connecting springs is connected to the pressure plate switch 152 to monitor the control status (open or closed) of the mechanical switch assembly 31, thereby knowing the on / off status of the circuit breaker 100. Specifically, when the circuit breaker 100 is on, the spring is pressed against the pressure plate switch 152, causing the pressure plate switch 152 to be on. When the circuit breaker 100 is on, the spring is separated from the pressure plate switch 152, causing the pressure plate switch 152 to be off. The two low-voltage connecting springs 151 determine the on / off status of the circuit breaker 100 by detecting the on / off status of the pressure plate switch 152.

[0049] In the panel, a PCB connector 203 is provided between the first busbar group 201 and the input component or AC output component, and a PCB connector 203 is also provided between the second busbar group 202 and the DC output component. The PCB connector 203 may have four connection contacts 204. When the circuit breaker 100 is inserted into the panel, the PCB connector 203 of the panel is inserted into the mounting slot 14 of the circuit breaker 100, so that the four connection contacts 204 of the PCB connector 203 of the panel are respectively connected to the four low-voltage connection springs 151 of the circuit breaker 100. The electrical connection here belongs to the low-voltage part connection; while the electrical connection between the circuit breaker 100 and the busbar, input component, and AC / DC output component belongs to the high-voltage part connection. Due to the installation slot 14, the low-voltage connection between the PCB connector 203 of the panel and the core board 15 of the circuit breaker 100 is not affected by the high-voltage connection between the panel and the circuit breaker 100, thus achieving the effect of separating high and low voltage, and ensuring the reliability of independent operation of high voltage and low voltage in actual operation.

[0050] In one embodiment, please refer to [reference needed]. Figure 3 The hinged transmission mechanism 4 includes a first hinge assembly 41, a transmission rod 42, and a second hinge assembly 43 hinged sequentially. A trigger spring 5 is connected to the end of the second hinge assembly 43 away from the first hinge assembly 41. A driving mechanism 3 drives the first hinge assembly 41 or the second hinge assembly 43 to rotate, thereby causing the trigger spring 5 to contact or disconnect from the conductive contact 13. In this embodiment, by integrating two sets of hinge assemblies into a single hinged transmission mechanism 4, more operational space is provided. Furthermore, different mechanisms can apply force to the first hinge assembly 41 or the second hinge assembly 43 to drive the trigger spring 5 to swing left and right, thereby causing the trigger spring 5 to contact or disengage from the conductive contact 13.

[0051] The connection circuit between the first connecting spring 111 and the second connecting spring 121 can refer to the prior art, and can be simplified to a knife switch. When the trigger spring 5 contacts the conductive contact 13, the first connecting spring 111 and the second connecting spring 121 are connected. When the trigger spring 5 is removed from the conductive contact 13, the first connecting spring 111 and the second connecting spring 121 are disconnected.

[0052] Specifically, the first hinge assembly 41 includes a first hinge rod 411, which includes a first connecting segment 4111 and a second connecting segment 4112 connected at an included angle. The connection between the first connecting segment 4111 and the second connecting segment 4112 is hinged to the housing 1, and the end of the second connecting segment 4112 away from the first connecting segment 4111 is hinged to the transmission rod 42. Thus, the first hinge assembly 41 has two operating segments (the first connecting segment 4111 and the second connecting segment 4112). Different drive mechanisms 3 can drive either the first connecting segment 4111 or the second connecting segment 4112 to trigger the spring 5 to contact or disengage from the conductive contact 13. Providing different operating segments to cooperate with different drive mechanisms 3 allows for a more rational configuration of the internal space of the circuit breaker 100, avoids interference between different drive mechanisms 3, and ensures the stability of the circuit breaker 100.

[0053] In the example of the above embodiment 1, the drive mechanism 3 includes a mechanical switch assembly 31, which includes a control rod 311 and a connecting rod 312. The control rod 311, the connecting rod 312 and the first connecting segment 4111 are sequentially hinged together, and the control rod 311 is rotatably connected to the housing 1. The control rod 311 also has an operating handle 3111 exposed in the housing 1.

[0054] Figure 4 The diagram shows a 1U circuit breaker 100 in the open state. At this time, the control lever 311 is in the left position, the trigger spring 5 and the conductive contact 13 are separated from each other and do not make contact, so that the output port 12 and the input port 11 are in an open state.

[0055] When it is necessary to open the circuit breaker 100, push the control lever 311 to the right. The control lever 311 drives the hinge transmission mechanism 4 to rotate downward through the connecting rod 312, which in turn drives the trigger spring 5 to move to the left until the trigger spring 5 and the conductive contact 13 make contact. The contact between the two makes the input port 11 and the output port 12 of the circuit breaker 100 connected. At this time, the entire circuit breaker 100 is in a energized state.

[0056] When it is necessary to disconnect the circuit breaker 100, push the control lever 311 to the left to move it to the left. The control lever 311 drives the hinge transmission mechanism 4 to rotate upward through the connecting rod 312, which in turn drives the trigger spring 5 to move to the right, causing the trigger spring 5 and the conductive contact 13 to separate. The separation of the two causes the input port 11 and the output port 12 of the circuit breaker 100 to be disconnected. At this time, the entire circuit breaker 100 is in a de-energized state.

[0057] In another example of the above embodiments, please refer to [link / reference]. Figure 5 The drive mechanism 3 includes an electronic switch assembly 32, which includes a first push rod 322 and a drive module 321. The drive module 321 is used to drive the first push rod 322 to move along a first direction to push the first hinge assembly 41 and drive the trigger spring 5 to contact the conductive contact 13.

[0058] The drive module 321 is connected to two connection points at the bottom of the circuit breaker 100, and is connected to an external switch drive circuit through these two connection points.

[0059] Figure 4 The diagram shows a 1U circuit breaker 100 in the open state. When the circuit breaker 100 needs to be opened via the electronic switch assembly 32, the external switch drive circuit inputs an ON command to the two connecting contacts. Under the control of the ON command, the drive module 321 drives the first push rod 322 to move to the right. The first push rod 322 pushes the hinged transmission mechanism 4 to rotate downward, thereby causing the trigger spring 5 to move to the left until the trigger spring 5 contacts the conductive contact 13. After that, the first push rod 322 returns to the left and retracts into the drive module 321. The contact between the trigger spring 5 and the conductive contact 13 connects the input port 11 and the output port 12 of the circuit breaker 100. At this time, the entire circuit breaker 100 is in a energized state. In addition, during the above process, when the hinged transmission mechanism 4 rotates downward, it can drive the mechanical control switch to move to the right via the transmission rod 42.

[0060] If the four connection points communicate with the circuit breaker 100 itself, then two of the four connection points in the low-voltage section are designed to act as electronic control switches to control the on / off state of the circuit breaker 100, and the other two connection points detect the control status of the mechanical switch to know the on / off state of the circuit breaker 100.

[0061] The switching device 2 also includes a stop block 6, which limits the transmission rod 42. When the first push rod 322 in the electronic switch assembly 32 pushes the hinged transmission mechanism 4 to rotate downward, the hinged transmission mechanism 4, under the stopping action of the stop block 6, causes the trigger spring 5 to move to the left until the trigger spring 5 and the conductive contact 13 come into contact. At the same time, the first push rod 322 returns to the left and retracts into the inside of the drive module 321. The stop block 6 can limit the transmission rod 42, so that the hinged transmission mechanism 4 will not rotate back to keep the trigger spring 5 and the conductive contact 13 in contact.

[0062] Specifically, the first hinge assembly 41 includes a lever 431 and a second hinge rod 432. The two ends of the second hinge rod 432 are respectively hinged to the trigger spring 5 of the transmission rod 42. The lever 431 is hinged to the second hinge rod 432. A limit notch 4311 is provided on the lever 431. When the trigger spring 5 contacts the conductive contact 13, the end of the transmission rod 42 is engaged in the limit notch 4311, and the stop block 6 abuts against the end of the transmission. The transmission rod 42, the lower half of the second hinge rod 432, and the lever 431 form a triangular structure. With the stop block 6 present, the transmission rod 42, the lever 431, and the stop block 6 work together to prevent the end of the transmission rod 42 from disengaging from the limiting notch 4311. This restricts the position of the end of the transmission rod 42 and the connection point of the limiting notch 4311, thus restricting the position of the entire triangular structure. This prevents the second hinge rod 432 from driving the trigger spring 5 to rotate backwards. The coordination of the transmission rod 42, the lever 431, and the stop block 6...

[0063] Based on the above embodiments, the switching device 2 further includes an elastic element 7, which is connected between the trigger spring 5 and the housing 1; the driving module 321 is also used to drive the first push rod 322 to move along the first direction to push the stop block 6 away from the lever 431, so that the trigger spring 5 is disengaged from the conductive contact 13 under the action of the elastic element 7.

[0064] When the circuit breaker 100 needs to be disconnected via the electronic switch assembly 32, the external switch drive circuit inputs an OFF command to the two connected contact points. Under the control of the OFF command, the drive module 321 drives the first push rod 322 to move to the right. The first push rod 322 pushes the stop block 6 to rotate, so that the stop block 6 separates from the hinge transmission mechanism 4. That is, the end of the transmission rod 42 can disengage from the limiting notch 4311, so that the triangular structure separates. The first push rod 322 returns to the left and retracts into the drive module 321. After separation, the hinge transmission mechanism 4 rotates upward under the action of the elastic member 7, thereby driving the trigger spring 5 to move to the right, causing the trigger spring 5 to separate from the conductive contact 13. The separation of the two disconnects the input port 11 and the output port 12 of the circuit breaker 100. At this time, the entire circuit breaker 100 is in a de-energized state. At the same time, during the above process, when the hinge transmission mechanism 4 rotates upward, it can drive the mechanical control switch to move to the left through the transmission rod 42.

[0065] Furthermore, the circuit breaker 100 also includes an overcurrent protector 8, which includes a drive coil 81 and a second push rod 82. The drive coil 81 is energized to drive the second push rod 82 to move along a first direction to push the second hinge assembly 43 and cause the trigger spring 5 to disengage from the conductive contact 13.

[0066] The circuit breaker 100 also includes an overcurrent protector 8, which includes a drive coil 81 and a second push rod 82. When the current of the circuit breaker 100 is too high, the drive coil 81 is energized to generate an electromagnetic force that drives the second push rod 82. Under the action of the electromagnetic force, the second push rod 82 moves to the right and pushes the lever 431 in the second hinge assembly 43, thereby causing the second hinge rod 432 to rotate clockwise. This causes the connecting contact piece to move to the right, separating the connecting contact piece from the conductive contact 13. This separation disconnects the input port 11 and the output port 12 of the circuit breaker 100, and the entire circuit breaker 100 is in a de-energized state. At the same time, during the above process, when the second hinge rod 432 rotates clockwise, it can drive the mechanical control switch to move to the left through the transmission rod 42.

[0067] In one embodiment, the circuit breaker 100 further includes an arc-extinguishing device 9, which is connected to the input port 11 or the output port 12. The arc-extinguishing device 9 is used to eliminate the electric arc generated by the circuit breaker 100 during use, thereby improving the safety and reliability of the circuit breaker 100. The arc-extinguishing device 9 is a commonly used structure in the art, and its wiring method is well known to those skilled in the art. Therefore, this application will not further describe the specific structure and wiring method of the arc-extinguishing device 9.

[0068] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A circuit breaker, characterized in that, The circuit breaker includes: The housing has an input port and an output port spaced apart on the same side. Each input port and the output port has two slots. At least one slot at the input port has a first connecting spring piece, and at least one slot at the output port has a second connecting spring piece. Conductive contacts disposed within the housing; A switching device includes a driving mechanism, a hinged transmission mechanism, and a trigger spring. The trigger spring is connected to the output end of the hinged transmission mechanism. The driving mechanism drives the hinged transmission mechanism to cause the trigger spring to contact or disconnect with the conductive contact, thereby connecting or disconnecting the first connecting spring and the second connecting spring in a one-to-one correspondence.

2. The circuit breaker as described in claim 1, characterized in that, The hinged transmission mechanism includes a first hinge assembly, a transmission rod, and a second hinge assembly that are hinged sequentially. The trigger spring is connected to the end of the second hinge assembly away from the first hinge assembly. The driving mechanism drives the first hinge assembly or the second hinge assembly to rotate so that the trigger spring contacts or disconnects from the conductive contact.

3. The circuit breaker as described in claim 2, characterized in that, The first hinge assembly includes a first hinge rod, which includes a first connecting segment and a second connecting segment connected to each other and arranged at an angle. The connection between the first connecting segment and the second connecting segment is hinged to the housing, and the end of the second connecting segment away from the first connecting segment is hinged to the transmission rod.

4. The circuit breaker as described in claim 3, characterized in that, The drive mechanism includes a mechanical switch assembly, which includes a control rod and a connecting rod. The control rod, the connecting rod, and the first connecting segment are sequentially hinged together, and the control rod is rotatably connected to the housing. The control rod also has an operating handle protruding from the housing.

5. The circuit breaker as described in claim 3, characterized in that, The driving mechanism includes an electronic switch assembly, which includes a first push rod and a driving module. The driving module is used to drive the first push rod to move along a first direction to push the first hinge assembly and cause the trigger spring to contact the conductive contact.

6. The circuit breaker as described in claim 5, characterized in that, The switching device further includes a stop block, which is used to limit the transmission rod.

7. The circuit breaker as described in claim 6, characterized in that, The first hinge assembly includes a lever and a second hinge rod. The two ends of the second hinge rod are respectively hinged to the trigger spring of the transmission rod. The lever is hinged to the second hinge rod. A limit notch is provided on the lever. When the trigger spring contacts the conductive contact, the end of the transmission rod is engaged in the limit notch, and the stop block abuts against the end of the transmission rod.

8. The circuit breaker as claimed in claim 7, characterized in that, The switching device further includes an elastic element, which is connected between the trigger spring and the housing; The drive module is also used to drive the first push rod to move along a first direction to push the stop block away from the lever, so that the trigger spring is disengaged from the conductive contact under the action of the elastic element.

9. The circuit breaker as described in any one of claims 2 to 8, characterized in that, The circuit breaker also includes an overcurrent protector, which includes a drive coil and a second push rod. The drive coil is energized to drive the second push rod to move in a first direction to push the second hinge assembly and cause the trigger spring to disengage from the conductive contact.

10. The circuit breaker as described in any one of claims 1 to 8, characterized in that, The circuit breaker further includes an arc-extinguishing device, which is connected to the input port or the output port; and / or The housing has a mounting slot located between the input port and the output port, and a low-voltage plug-in assembly is provided in the mounting slot, with multiple connection points on the low-voltage plug-in assembly.

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