Arc striking assembly and switching device

Abstract

The utility model discloses an arc striking assembly and a circuit breaker, and relates to the technical field of circuit breakers, the arc striking assembly is installed on a switching device, the switching device is provided with a shell, and the arc striking assembly is installed in the shell. The arc striking assembly comprises a bimetal connecting plate, an arc channel arc striking plate and an arc extinguish chamber arc striking plate. The double-metal connecting plate is connected to the inner wall of the shell, the double-metal connecting plate is connected to the first end of the arc channel end tab, the arc extinguish chamber end tab is arranged at the second end of the arc channel end tab, and a magnetic conduction structure is arranged on the arc channel end tab. The bimetal connecting plate, the arc channel run-on plate, the arc extinguish chamber run-on plate and the magnetic conductive structure are of an integrated structure. According to the arc striking assembly and the switching device provided by the invention, the structure of the arc striking assembly can be simplified while the arc striking effect is realized, and the assembly efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of circuit breakers, and more particularly to an arc - guiding component and a switching device. Background Art

[0002] The arc - guiding structure in a circuit breaker is used to guide the arc generated after the moving contact and the static contact are separated, so as to guide the arc from between the moving contact and the static contact into the arc - extinguishing chamber, thereby effectively improving the arc - extinguishing ability of the circuit breaker and reducing the risk of electrical accidents.

[0003] In the arc - guiding structure of traditional circuit breaker products, it usually includes multiple independent parts with the function of guiding the arc, and the multiple parts cooperate with each other to achieve the arc - guiding function.

[0004] However, in the assembly process of the circuit breaker, it is not easy to achieve rapid assembly by using multiple parts with the function of guiding the arc, which affects the overall assembly efficiency of the circuit breaker. Summary of the Utility Model

[0005] The purpose of this application is to provide an arc - guiding component and a switching device, which can simplify the structure of the arc - guiding component while realizing the function of guiding the arc, and improve the assembly efficiency.

[0006] In a first aspect, an embodiment of this application provides an arc - guiding component, which is installed in a switching device. The switching device has a housing, and the arc - guiding component is installed inside the housing. The arc - guiding component includes a bimetal connecting plate, an arc - path arc - guiding plate, and an arc - extinguishing - chamber arc - guiding plate.

[0007] The bimetal connecting plate is connected to the inner wall of the housing, and the bimetal connecting plate is connected to the first end of the arc - path arc - guiding plate. The arc - extinguishing - chamber arc - guiding plate is arranged at the second end of the arc - path arc - guiding plate. A magnetic - guiding structure is arranged on the arc - path arc - guiding plate. The bimetal connecting plate, the arc - path arc - guiding plate, the arc - extinguishing - chamber arc - guiding plate, and the magnetic - guiding structure are of an integral structure.

[0008] Based on the above - mentioned embodiment of this application, by setting the bimetal connecting plate, the arc - path arc - guiding plate, the magnetic - guiding structure, and the arc - extinguishing - chamber arc - guiding plate as an integral structure, the number of separate parts is reduced. During the process of assembling into the switching device, it can be directly installed into the housing as a whole without separate installation, effectively simplifying the assembly operation, saving the assembly time, and thus improving the assembly efficiency of the arc - guiding component.

[0009] In an optional embodiment, the arc - path arc - guiding plate includes an arc - receiving section and an arc - guiding section arranged at an angle. The end of the arc - receiving section far from the arc - guiding section corresponds to the first end of the arc - path arc - guiding plate, and the end of the arc - guiding section far from the arc - receiving section corresponds to the second end of the arc - path arc - guiding plate. The magnetic - guiding structure is arranged on the arc - guiding section.

[0010] Based on the above embodiments of the present application, the arc path arc guide plate composed of the arc receiving section and the arc guiding section is conducive to receiving the electric arc on the one hand, enabling the electric arc to quickly move onto the arc path arc guide plate and preventing the electric arc from damaging the housing and other components inside the housing. On the other hand, it can cooperate with the arc running path structure to enable the electric arc to stably move into the arc extinguishing chamber, and under the action of the magnetic conduction structure, a magnetic blowing effect can be generated on the electric arc, enabling the electric arc to enter the arc extinguishing chamber faster, which is conducive to improving the arc extinguishing effect.

[0011] In an alternative embodiment, the magnetic conduction structure includes a first magnetic conduction plate and a second magnetic conduction plate, and the first magnetic conduction plate and the second magnetic conduction plate are oppositely arranged on both sides of the arc path arc guide plate.

[0012] Based on the above embodiments of the present application, the magnetic conduction structure composed of the first magnetic conduction plate and the second magnetic conduction plate has a relatively simple structure, which is convenient for integrally manufacturing and forming with the arc path arc guide plate, so that the arc guide assembly not only has the function of magnetic blowing arc extinguishing but also does not affect the assembly efficiency. Moreover, the magnetic field generated by the first magnetic conduction plate and the second magnetic conduction plate is relatively stable, and can generate a stable magnetic blowing effect on the electric arc to achieve the purpose of quickly extinguishing the arc, effectively improving the arc guiding ability of the arc guide assembly.

[0013] In an alternative embodiment, the first magnetic conduction plate and the second magnetic conduction plate are on the same side relative to the arc guiding section, and the first magnetic conduction plate and the second magnetic conduction plate are parallel.

[0014] Based on the above embodiments of the present application, arranging the first magnetic conduction plate and the second magnetic conduction plate in parallel on the same side relative to the arc guiding section is convenient for the arc guide assembly to be assembled in the same direction, and further improves the stability and uniformity of the magnetic field generated by the magnetic conduction structure, so as to enable the entire electric arc to stably enter the arc extinguishing chamber by using the magnetic conduction structure.

[0015] In an alternative embodiment, a first extension part and a second extension part are arranged on the arc guiding section, the first extension part and the second extension part are oppositely arranged on both sides of the arc guiding section, the first magnetic conduction plate is connected to the first extension part, and the second magnetic conduction plate is connected to the second extension part.

[0016] Based on the above embodiments of the present application, the setting of the first extension part can make the first magnetic conduction plate have an offset distance relative to the arc guiding section, and the setting of the second extension part can make the second magnetic conduction plate have an offset distance relative to the arc guiding section. Adopting this setting form is not only convenient for the manufacturing and forming of the arc guide assembly but also convenient for assembling the arc guide assembly into the housing.

[0017] In an alternative embodiment, a first bending part is arranged at the first end of the arc path arc guide plate, the first bending part bends away from the arc path arc guide plate, and the bimetal connecting plate is connected to the first bending part.

[0018] Based on the above embodiments of the present application, by providing a first bending portion to connect the arc path arc starter plate and the double-metal connecting plate, an integrated structure can be formed without affecting their respective functions. During the assembly process, the fixed connection between the double-metal connecting plate and the housing can also fix the arc path arc starter plate, effectively simplifying the assembly operation and improving the assembly efficiency.

[0019] In an alternative embodiment, the double-metal connecting plate includes a mounting portion and a connecting portion. The mounting portion is connected to the first bending portion, and the connecting portion is located on the side of the mounting portion away from the first bending portion. The connecting portion is bent relative to the mounting portion towards the arc path arc starter plate.

[0020] Based on the above embodiments of the present application, the double-metal connecting plate composed of the connected mounting portion and connecting portion can be assembled by fixedly connecting the mounting portion to the housing, and connected to the bimetal through the connecting portion, with a simple and compact structure. The connecting portion is bent relative to the mounting portion towards the arc path arc starter plate, which can make the connecting portion closer to the arc path arc starter plate relative to the mounting portion. On the one hand, it facilitates the installation and adjustment of the bimetal, and on the other hand, it can reduce the space occupied by the arc starter assembly, which is beneficial to the assembly of the arc starter assembly.

[0021] In an alternative embodiment, a transition portion is provided on the side of the arc quenching chamber arc starter plate close to the arc path arc starter plate, and the transition portion is connected to the arc path arc starter plate.

[0022] Based on the above embodiments of the present application, the provision of the transition portion can play a transitional role for the arc moving from the arc path arc starter plate, so that the arc can move smoothly along the plane where the arc quenching chamber arc starter plate is located and enter the arc quenching chamber. Moreover, the provision of the transition portion can be used to avoid the first magnetic guide plate and the second magnetic guide plate, preventing the first magnetic guide plate and the second magnetic guide plate from interfering with the arc quenching chamber arc starter plate respectively, which is convenient for production and manufacturing.

[0023] In an alternative embodiment, the width of the arc quenching chamber arc starter plate is greater than the width of the arc path arc starter plate.

[0024] Based on the above embodiments of the present application, due to the differences in the positions and functions of the arc quenching chamber arc starter plate and the arc path arc starter plate, the arc quenching chamber arc starter plate is used for arc starting in the arc quenching chamber, and its width is the same as or greater than the width of the arc quenching component to better cooperate with the arc quenching component for arc quenching. While the arc path arc starter plate is used to cooperate with the arc running path structure to guide the arc into the arc quenching chamber, and its smaller width is convenient for arc guiding.

[0025] In a second aspect, the embodiments of the present application further provide a circuit breaker, including a housing, a bimetal, and the above-mentioned arc starter assembly. The arc starter assembly is installed in the housing, and the bimetal is connected to the double-metal connecting plate.

[0026] Based on the above embodiments of the present application, for the circuit breaker with the above-mentioned arc ignition component, by setting the arc ignition component into an integral structure, the number of parts is effectively reduced, the operation of assembling the arc ignition component to the circuit breaker housing is simplified, and the assembly efficiency is improved. Moreover, the assembly of the arc ignition component with the housing and the bimetallic strip improves the assembly stability of the arc ignition component and the safety of arc ignition. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0028] Figure 1 Internal structure schematic diagram of the switching device provided by the embodiment of the present application.

[0029] Figure 2 First view of the arc ignition component provided by the embodiment of the present application.

[0030] Figure 3 Partial internal structure schematic diagram of the switching device provided by the embodiment of the present application.

[0031] Figure 4 Provided by the embodiment of the present application Figure 3 Enlarged view of part A.

[0032] Figure 5 Second view of the arc ignition component provided by the embodiment of the present application.

[0033] Figure 6 Third view of the arc ignition component provided by the embodiment of the present application.

[0034] Figure 7 Another embodiment of the connection between the bimetallic strip and the arc ignition component provided by the embodiment of the present application.

[0035] Explanation of the reference numerals:

[0036] 100, Arc starting component; 200, Switching device; 201, Housing; 2011, Fixing hole; 202, Bimetallic strip; 203, Adjusting screw; 204, Arc extinguishing chamber; 205, Arc extinguishing component; 206, Moving contact; 207, Static contact; 1, Bimetal connecting plate; 11, Mounting part; 111, Fixing arm; 112, Extension plate; 113, Avoidance groove; 12, Connecting part; 121, Second bending part; 122, Connecting end; 2, Arc path arc starting plate; 21, Arc receiving section; 22, Arc guiding section; 221, First extension part; 222, Second extension part; 23, First bending part; 3, Arc extinguishing chamber arc starting plate; 31, Transition part; 4, Magnetic conduction structure; 41, First magnetic conduction plate; 42, Second magnetic conduction plate. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. The components of the embodiments of the present application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0039] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present application. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0041] In the description of the present application, it should also be noted that, unless otherwise clearly specified and defined, the terms "arrangement" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0042] In traditional circuit breaker products, the arc guiding structure usually includes multiple relatively independent parts with the function of guiding the arc, and the multiple parts cooperate with each other to achieve the arc guiding function. For example, parts such as an inclined arc guiding plate, a horizontal arc guiding plate, and a magnetic conduction plate are assembled separately and cooperate with each other to achieve the arc guiding function.

[0043] However, due to the large number of parts, the operation of assembling them into the circuit breaker is relatively cumbersome, resulting in low assembly efficiency, and it is easy for the cooperation between the parts to be unstable after assembly, affecting the overall production efficiency and use stability of the circuit breaker.

[0044] Based on this, the embodiments of the present application provide an arc guiding component and a switching device, which can simplify the structure of the arc guiding component while realizing the arc guiding function, improve the assembly efficiency, and are beneficial to improving the working stability of the arc guiding component.

[0045] In order to enable those skilled in the art to better understand the solution of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0046] Please refer to Figures 1 to 3 , this embodiment provides an arc guiding component 100, which is installed in a switching device 200. The switching device 200 has a housing 201, and the arc guiding component 100 is installed inside the housing 201. The arc guiding component 100 includes a bimetal connecting plate 1, an arc path arc guiding plate 2, and an arc extinguishing chamber arc guiding plate 3.

[0047] The bimetal connecting plate 1 is connected to the inner wall of the housing 201, and the bimetal connecting plate 1 is connected to the first end of the arc path arc guiding plate 2. The arc extinguishing chamber arc guiding plate 3 is arranged at the second end of the arc path arc guiding plate 2, and a magnetic conduction structure 4 is arranged on the arc path arc guiding plate 2. The bimetal connecting plate 1, the arc path arc guiding plate 2, the arc extinguishing chamber arc guiding plate 3, and the magnetic conduction structure 4 are of an integral structure.

[0048] The arc ignition component 100 provided in this embodiment can be applied to multiple types of switching devices that require arc extinguishing, such as circuit breakers, contactors, or fuses. By installing the arc ignition component 100 inside the housing 201 of the switching device 200, the arc generated when the inside of the switching device 200 is disconnected can be guided to the arc extinguishing chamber 204 for arc extinguishing, thereby completing arc extinguishing through the arc extinguishing chamber 204 and preventing the arc from damaging the housing 201 or other components inside the housing 201.

[0049] Referring to Figure 1 , the bimetal connecting plate 1 in the arc ignition component 100 is used to fixedly install the bimetallic strip 202 in the switching device 200, and the bimetallic strip 202 is mainly used to implement the thermal protection function of the switching device 200. The bimetal connecting plate 1 can be fixedly connected to the inner wall of the housing 201 to fix the arc ignition component 100 inside the housing 201.

[0050] Referring to Figure 2 , the arc path arc guiding plate 2 in the arc ignition component 100 is used to cooperate with the arc running path structure (not shown in the figure) in the switching device 200, so that the arc can smoothly enter the arc extinguishing chamber 204 under the mutual cooperation of the arc running path structure and the arc path arc guiding plate 2.

[0051] Referring to Figure 3 , the arc extinguishing chamber arc guiding plate 3 in the arc ignition component 100 is used to completely introduce the arc into the arc extinguishing chamber 204 in the housing 201 and cooperate with the arc extinguishing component 205 arranged in the arc extinguishing chamber 204 to completely extinguish the arc.

[0052] Among them, referring to Figure 2 , the arc path arc guiding plate 2 is a long strip plate-like structure. The bimetal connecting plate 1 is arranged at the first end of the arc path arc guiding plate 2, and the arc extinguishing chamber arc guiding plate 3 is arranged at the second end of the arc path arc guiding plate 2, that is, the bimetal connecting plate 1, the arc path arc guiding plate 2, and the arc extinguishing chamber arc guiding plate 3 are connected in sequence.

[0053] The setting of the magnetic conduction structure 4 is used to cooperate with the arc path arc guiding plate 2 to form a magnetic blow arc extinguishing structure. The magnetic conduction structure 4 can form a magnetic field after being energized, and can apply an electromagnetic force to the arc passing through the arc path arc guiding plate 2, so that the arc quickly moves along the arc path arc guiding plate 2 to the arc extinguishing chamber 204, enhancing the arc ignition effect of the arc ignition component 100.

[0054] Based on the above embodiment of the present application, by setting the bimetal connecting plate 1, the arc path arc guiding plate 2, the magnetic conduction structure 4, and the arc extinguishing chamber arc guiding plate 3 as an integrated structure, the number of separate parts is reduced. During the process of assembling to the switching device 200, it can be directly installed as a whole inside the housing 201 without separate installation, effectively simplifying the assembly operation, saving assembly time, and thus improving the assembly efficiency of the arc ignition component 100.

[0055] Referring to Figures 2 to 4In some examples, the arc-starting plate 2 includes an arc-connecting segment 21 and an arc-guiding segment 22 that are arranged at an angle. The end of the arc-connecting segment 21 away from the arc-guiding segment 22 corresponds to the first end of the arc-starting plate 2, and the end of the arc-guiding segment 22 away from the arc-connecting segment 21 corresponds to the second end of the arc-starting plate 2, and the magnetic conductive structure 4 is arranged on the arc-guiding segment 22.

[0056] Reference Figure 3 and Figure 4 The arc-connecting segment 21 is used to receive the arc generated after the switch device 200 is disconnected, and can receive the arc from the arc generation position to the arc-starting plate 2, so that the arc moves along the arc-starting plate 2 and enters the arc-extinguishing chamber 204. In the embodiment of the present application, the arc is generated between the moving contact 206 and the stationary contact 207 after the disconnection in the housing 201, and the position of the arc-connecting segment 21 is close to the position of the moving contact 206 after the disconnection, so that the arc creeps from the moving contact 206 to the arc-connecting segment 21.

[0057] The arc guiding segment 22 is connected to the arc connecting segment 21 , and is used to cooperate with the arc track structure in the housing 201 so as to stably guide the arc received by the arc connecting segment 21 into the arc extinguishing chamber 204 .

[0058] Reference Figure 2 and Figure 4 , the arc connection segment 21 and the arc guide segment 22 are arranged at an angle, that is, relative to the plane where the arc striking plate 3 of the arc extinguishing chamber is located, the arc connection segment 21 and the arc guide segment 22 have different inclination angles, and the arc guide segment 22 has a smaller inclination angle relative to the arc striking plate 3 of the arc extinguishing chamber, which facilitates the arc to stably move along the arc guide segment 22 to the arc striking plate 3 of the arc extinguishing chamber. The arc connection segment 21 has a larger inclination angle relative to the arc striking plate 3 of the arc extinguishing chamber, which facilitates the arc moving contact 206 to quickly move to the arc striking plate 2 of the arc path.

[0059] In the embodiments of this application, refer to Figure 2 The included angle between the arc connecting segment 21 and the arc guiding segment 22 is an obtuse angle, which can be specifically set to an included angle of, for example, 135° or 120°.

[0060] In addition, the arc connection section 21 is short, and the arc guide section 22 is long, so the arc can quickly move from the moving contact 206 through the arc connection section 21 to the arc guide section 22. Therefore, the magnetic conductive structure 4 is arranged on the arc guide section 22 to produce a sufficient magnetic blowing effect on the arc on the arc guide section 22, so that the arc quickly enters the arc extinguishing chamber 204.

[0061] Based on the above embodiments of the present application, the arc path arc guide plate 2 composed of the arc receiving section 21 and the arc guiding section 22 is beneficial in receiving the electric arc on the one hand, enabling the electric arc to quickly move onto the arc path arc guide plate 2 and preventing the electric arc from damaging the housing 201 and other components within the housing 201. On the other hand, it can cooperate with the arc running path structure to stably move the electric arc into the arc extinguishing chamber 204, and under the action of the magnetic conduction structure 4, a magnetic blowing effect can be generated on the electric arc, enabling the electric arc to enter the arc extinguishing chamber 204 faster, which is beneficial to improving the arc extinguishing effect.

[0062] Referring to Figure 2 , in some examples, the magnetic conduction structure 4 includes a first magnetic conduction plate 41 and a second magnetic conduction plate 42, and the first magnetic conduction plate 41 and the second magnetic conduction plate 42 are oppositely arranged on both sides of the arc path arc guide plate 2.

[0063] Based on the above embodiments of the present application, the magnetic conduction structure 4 composed of the first magnetic conduction plate 41 and the second magnetic conduction plate 42 has a relatively simple structure, is convenient for being integrally formed with the arc path arc guide plate 2, so that the arc guide assembly 100 not only has the function of magnetic blowing arc extinguishing but also does not affect the assembly efficiency. Moreover, the magnetic fields generated by the first magnetic conduction plate 41 and the second magnetic conduction plate 42 are relatively stable, and can generate a stable magnetic blowing effect on the electric arc to achieve the purpose of quickly extinguishing the arc, effectively improving the arc guiding ability of the arc guide assembly 100.

[0064] Specifically, referring to Figure 2 , the first magnetic conduction plate 41 and the second magnetic conduction plate 42 are oppositely arranged on both sides of the arc path arc guide plate 2 and are integrally formed with the arc path arc guide plate 2. After the arc path arc guide plate 2 is electrified, a magnetic field is generated between the first magnetic conduction plate 41 and the second magnetic conduction plate 42. After the electric arc moves from the arc receiving section 21 to the arc guiding section 22, it is immediately affected by the magnetic conduction structure 4, so that the electric arc can quickly move from the arc guiding section 22 to the arc extinguishing chamber arc guide plate 3, which is beneficial to realizing the functions of quickly guiding the arc and extinguishing the arc.

[0065] Among them, the arc path arc guide plate 2 is electrified after the switching device 200 is disconnected. When the electric arc moves onto the arc path arc guide plate 2, the current at the incoming line end of the switching device 200 passes through the arc path arc guide plate 2, and a magnetic field is generated between the first magnetic conduction plate 41 and the second magnetic conduction plate 42, thereby having a magnetic blowing effect on the electric arc.

[0066] Referring to Figure 2 , in some examples, the first magnetic conduction plate 41 and the second magnetic conduction plate 42 are on the same side with respect to the arc guiding section 22, and the first magnetic conduction plate 41 and the second magnetic conduction plate 42 are parallel.

[0067] Specifically, both the first magnetic guide plate 41 and the second magnetic guide plate 42 are perpendicular to the plane where the arc guiding section 22 is located, and the first magnetic guide plate 41 and the second magnetic guide plate 42 are parallel to each other. The arc guiding section 22 has an arc guiding surface facing the position of the static contact 207. When the arc passes through the arc guiding section 22, it is located between the arc guiding surface and the static contact 207. Therefore, both the first magnetic guide plate 41 and the second magnetic guide plate 42 extend in the direction of the static contact 207, so as to generate a magnetic blowing effect on the entire arc between the arc guiding surface and the static contact 207, enabling the entire arc to receive electromagnetic force and quickly move into the arc extinguishing chamber 204.

[0068] Based on the above embodiments of the present application, the first magnetic guide plate 41 and the second magnetic guide plate 42 are arranged in parallel on the same side relative to the arc guiding section 22, which facilitates the assembly of the arc ignition component 100 in the same direction, and further improves the stability and uniformity of the magnetic field generated by the magnetic guiding structure 4, so that the entire arc can stably enter the arc extinguishing chamber 204 by using the magnetic guiding structure 4.

[0069] Refer to Figure 5 , in some examples, a first extension portion 221 and a second extension portion 222 are provided on the arc guiding section 22. The first extension portion 221 and the second extension portion 222 are oppositely arranged on both sides of the arc guiding section 22. The first magnetic guide plate 41 is connected to the first extension portion 221, and the second magnetic guide plate 42 is connected to the second extension portion 222.

[0070] Based on the above embodiments of the present application, the setting of the first extension portion 221 can make the first magnetic guide plate 41 have an offset distance relative to the arc guiding section 22, and the setting of the second extension portion 222 can make the second magnetic guide plate 42 have an offset distance relative to the arc guiding section 22. Adopting this setting form not only facilitates the manufacturing and shaping of the arc ignition component 100, but also facilitates the assembly of the arc ignition component 100 into the housing 201.

[0071] Specifically, refer to Figure 5 , the first extension portion 221 and the second extension portion 222 are oppositely arranged on two side edges of the arc guiding section 22. The first extension portion 221 and the second extension portion 222 extend towards both sides of the arc guiding section 22 in the width direction of the arc guiding section 22, and the extension distances of the first extension portion 221 and the second extension portion 222 are equal. In this way, the offset distances of the first magnetic guide plate 41 and the second magnetic guide plate 42 relative to the arc guiding section 22 are equal, so as to form a stable magnetic field at the arc guiding section 22 to exert a stable magnetic blowing effect on the arc between the first magnetic guide plate 41 and the second magnetic guide plate 42.

[0072] Refer to Figure 2 , in some examples, a first bending portion 23 is provided at the first end of the arc path arc ignition plate 2. The first bending portion 23 bends away from the arc path arc ignition plate 2, and the bimetal connecting plate 1 is connected to the first bending portion 23.

[0073] Based on the above embodiments of the present application, by providing the first bending portion 23 to connect the arc path arc guide plate 2 and the bimetal connecting plate 1, an integrated structure can be formed without affecting their respective functions. During the assembly process, the fixed connection between the bimetal connecting plate 1 and the housing 201 can also fix the arc path arc guide plate 2, effectively simplifying the assembly operation and improving the assembly efficiency.

[0074] The bimetal connecting plate 1 is integrally provided on the side of the first bending portion 23 away from the arc path arc guide plate 2. The first bending portion 23 bending away from the arc path arc guide plate 2 can separate the arc path arc guide plate 2 and the bimetal connecting plate 1. This can reduce the influence of the bimetal connecting plate 1 on the arc path arc guide plate 2 during the arc initiation process, and leave a spacing distance for the fixed connection between the bimetal connecting plate 1 and the housing 201 and the bimetal sheet 202.

[0075] At the same time, the first bending portion 23 is at the first end of the arc path arc guide plate 2, that is, on the side of the arc receiving section 21 away from the arc guiding section 22. To prevent the electric arc from moving from the arc receiving section 21 along the first bending portion 23 to the bimetal connecting plate 1, in the embodiments of the present application, the bending angle of the first bending portion 23 is relatively large, which is beneficial to improving the use safety of the arc initiation assembly 100 and reducing the risk of electrical accidents.

[0076] Refer to Figure 2 and Figure 6 In some examples, the bimetal connecting plate 1 includes a mounting portion 11 and a connecting portion 12. The mounting portion 11 is connected to the first bending portion 23, and the connecting portion 12 is located on the side of the mounting portion 11 away from the first bending portion 23. The connecting portion 12 bends towards the arc path arc guide plate 2 relative to the mounting portion 11.

[0077] Based on the above embodiments of the present application, the bimetal connecting plate 1 composed of the connected mounting portion 11 and connecting portion 12 can be assembled by fixedly connecting the mounting portion 11 to the housing 201, and connected to the bimetal sheet 202 through the connecting portion 12. The structure is simple and compact. The connecting portion 12 bends towards the arc path arc guide plate 2 relative to the mounting portion 11, which can make the connecting portion 12 closer to the arc path arc guide plate 2 relative to the mounting portion 11. On the one hand, it is convenient for the installation and adjustment of the bimetal sheet 202, and on the other hand, it can reduce the space occupied by the arc initiation assembly 100, which is beneficial to the assembly of the arc initiation assembly 100.

[0078] Specifically, refer to Figure 4 and Figure 6, the installation part 11 includes two relatively arranged fixed arms 111 and an extension plate 112 located between the two fixed arms 111. An avoidance groove 113 is arranged between the fixed arm 111 and the extension plate 112. The fixed arm 111 can be connected to a fixing hole 2011 opened on the inner wall of the housing 201. The two relatively arranged fixed arms 111 can be correspondingly connected to two opposite inner walls within the housing 201, thereby fixedly connecting the installation part 11 within the housing 201.

[0079] The connecting part 12 is integrally arranged with the extension plate 112 in the installation part 11. After the bimetallic sheet 202 is welded to the connecting part 12, the position of the connecting part 12 and the bimetallic sheet 202 can be adjusted by the adjusting screw 203. At this time, the extension plate 112 can be finely adjusted along with the connecting part 12. The setting of the avoidance groove 113 can reduce the influence of the extension plate 112 on the fixed arm 111 during the fine adjustment process of the extension plate 112, and improve the connection stability between the installation part 11 and the housing 201.

[0080] In addition, referring to Figure 6 and Figure 7 , the part where the connecting part 12 is bent relative to the installation part 11 is the second bending part 121, and the side of the connecting part 12 away from the installation part 11 is the connecting end 122. In the embodiment of the present application, the bimetallic sheet 202 can be welded to the left side of the connecting end 122, and the adjusting screw 203 is arranged on the right side of the connecting end 122. By adjusting the adjusting screw 203, the connecting end 122 can drive the bimetallic sheet 202 to be finely adjusted left and right. In another embodiment, referring to Figure 7 , the bimetallic sheet 202 can be welded to the second bending part 121, and the adjusting screw 203 needs to be arranged at a position where it can abut against the second bending part 121, so that the above functions can also be realized.

[0081] Referring to Figure 2 and Figure 5 , in some examples, a transition part 31 is arranged on the side of the arc extinguishing chamber arc guiding plate 3 close to the arc path arc guiding plate 2, and the transition part 31 is connected to the arc path arc guiding plate 2.

[0082] Based on the above embodiments of the present application, the setting of the transition part 31 can play a transitional role in the arc moving from the arc path arc guiding plate 2, so that the arc can move smoothly along the plane where the arc extinguishing chamber arc guiding plate 3 is located and enter the arc extinguishing chamber 204. Moreover, the setting of the transition part 31 can be used to avoid the first magnetic guiding plate 41 and the second magnetic guiding plate 42, prevent the first magnetic guiding plate 41 and the second magnetic guiding plate 42 from interfering with the arc extinguishing chamber arc guiding plate 3 respectively, and facilitate production and manufacturing.

[0083] Referring to Figure 5 , in some examples, the width of the arc extinguishing chamber arc guiding plate 3 is greater than the width of the arc path arc guiding plate 2.

[0084] Based on the above embodiments of the present application, since there are differences in the positions and functions of the arcing chamber arcing plate 3 and the arc path arcing plate 2, the arcing chamber arcing plate 3 is used for arcing in the arcing chamber 204, and its width is the same as or greater than the width of the arcing component 205, so as to better cooperate with the arcing component 205 for arc quenching. The arc path arcing plate 2 is used to cooperate with the arc running path structure to guide the arc into the arcing chamber 204, and its smaller width facilitates the guidance of the arc.

[0085] Referring to Figures 1 to 7 , an embodiment of the present application further provides a circuit breaker, including a housing 201, a bimetallic strip 202, and the above-mentioned arcing component 100. The arcing component 100 is installed in the housing 201, and the bimetallic strip 202 is connected to the bimetal connection plate 1.

[0086] Based on the above embodiments of the present application, for the circuit breaker having the above-mentioned arcing component 100, by setting the arcing component 100 into an integral structure, the number of parts is effectively reduced, the operation of assembling the arcing component 100 to the circuit breaker housing 201 is simplified, the assembly efficiency is improved, and moreover, the assembly of the arcing component 100 with the housing 201 and the bimetallic strip 202 improves the assembly stability of the arcing component 100 and the safety of arcing.

[0087] Among them, the assembly of the arcing component 100 with the housing 201 and the bimetallic strip 202 has been described in the foregoing embodiments and will not be elaborated here.

[0088] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. An arc ignition component, characterized in that, Mounted on a switching device, the switching device having a housing, and the arc-igniting assembly is mounted inside the housing; The arc-igniting assembly includes a bimetal connecting plate, an arc path arc-igniting plate, and an arc extinguishing chamber arc-igniting plate; The bimetal connecting plate is connected to the inner wall of the housing, and the bimetal connecting plate is connected to the first end of the arc path arc-igniting plate. The arc extinguishing chamber arc-igniting plate is disposed at the second end of the arc path arc-igniting plate, and a magnetic conduction structure is provided on the arc path arc-igniting plate; The bimetal connecting plate, the arc path arc-igniting plate, the arc extinguishing chamber arc-igniting plate, and the magnetic conduction structure are of an integral structure.

2. The arc ignition component according to claim 1, characterized in that, The arc path arc-igniting plate includes an arc-receiving section and an arc-guiding section arranged at an angle; The end of the arc-receiving section away from the arc-guiding section corresponds to the first end of the arc path arc-igniting plate, and the end of the arc-guiding section away from the arc-receiving section corresponds to the second end of the arc path arc-igniting plate. The magnetic conduction structure is provided on the arc-guiding section.

3. The arc starting component according to claim 1 or 2, characterized in that The magnetic conduction structure includes a first magnetic conduction plate and a second magnetic conduction plate, and the first magnetic conduction plate and the second magnetic conduction plate are oppositely arranged on both sides of the arc path arc-igniting plate.

4. The arc starting component according to claim 3, characterized in that, The first magnetic conduction plate and the second magnetic conduction plate are on the same side with respect to the arc path arc-igniting plate, and the first magnetic conduction plate and the second magnetic conduction plate are parallel.

5. The arc ignition component according to claim 3, characterized in that, The arc path arc-igniting plate is provided with a first extension portion and a second extension portion, and the first extension portion and the second extension portion are oppositely arranged on both sides of the arc path arc-igniting plate. The first magnetic conduction plate is connected to the first extension portion, and the second magnetic conduction plate is connected to the second extension portion.

6. The arc ignition assembly according to claim 1, wherein, The first end of the arc path arc-igniting plate is provided with a first bending portion, and the first bending portion bends away from the arc path arc-igniting plate, and the bimetal connecting plate is connected to the first bending portion.

7. The arc ignition assembly according to claim 6, characterized in that, The bimetal connecting plate includes a mounting portion and a connecting portion. The mounting portion is connected to the first bending portion, and the connecting portion is located on the side of the mounting portion away from the first bending portion. The connecting portion bends towards the arc path arc-igniting plate relative to the mounting portion.

8. The arc striking component according to claim 1, wherein A transition portion is provided on the side of the arc extinguishing chamber arc-igniting plate close to the arc path arc-igniting plate, and the transition portion is connected to the arc path arc-igniting plate.

9. The arc striking assembly according to claim 8, characterized in that, The width of the arc extinguishing chamber arc-igniting plate is greater than the width of the arc path arc-igniting plate.

10. A switching device, characterized in that, Including a housing, a bimetal sheet, and the arc-igniting assembly according to any one of claims 1-9, the arc-igniting assembly is mounted inside the housing, and the bimetal sheet is connected to the bimetal connecting plate.

Images