Arc extinguishing device and switching device

Abstract

An arc extinguishing device and a switching device relate to the technical field of low-voltage apparatuses. The arc extinguishing device comprises a magnetic assembly, a first arc extinguishing assembly and a second arc extinguishing assembly, each of the first arc extinguishing assembly and the second arc extinguishing assembly comprises at least one arc extinguishing structure, and any one arc extinguishing structure of the first arc extinguishing assembly is in equipotential connection with one arc extinguishing structure of the second arc extinguishing assembly; the magnetic assembly comprises a plurality of permanent magnets, the permanent magnets are arranged at intervals in the second direction, and the magnetic pole direction of each permanent magnet, the first direction and the second direction are perpendicular in pairs. According to the arc extinguishing device, the arc extinguishing effect of the arc extinguishing device can be improved on the basis of not increasing the height of the arc extinguishing device.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, and in particular to an arc extinguishing device and a switch component. Background Art

[0002] The role of low-voltage switches in power distribution lines is to disconnect and connect circuits. More specifically, it protects lines and equipment by connecting or disconnecting the lines through the closing or separation of the moving and stationary contacts of the contact system. When the moving and stationary contacts are separated under current-carrying conditions, an arc will be generated. The generated arc enters the arc extinguishing device under the combined action of magnetic blowing force and air blowing force. Inside the arc extinguishing device, the arc is cut into multiple short arcs in series by the grid, thereby increasing the arc voltage and extinguishing the arc.

[0003] The arc extinguishing device of the existing arc extinguishing system is generally composed of arc extinguishing grids and partitions. The two ends of the arc extinguishing grid can be fixed on the two partitions on both sides by riveting. In order to improve the arc extinguishing effect of the arc extinguishing device, it is currently the most efficient way to increase the arc voltage to set as many grids that can cut the arc as possible in a limited space. However, the existing conventional method is to stack the grids directly in the height direction of the arc extinguishing device, but this setting method will cause the size of the arc extinguishing device along its height direction to be too large on the one hand; on the other hand, the stacked height dimension of the grids is much larger than the contact opening distance, which will cause the arc to be complicated and not easy to enter the arc extinguishing device. Therefore, how to provide a new arc extinguishing device to solve the above problems is important and meaningful. Utility Model Content

[0004] The utility model aims to provide an arc extinguishing device and a switch device, which can improve the arc extinguishing effect of the arc extinguishing device without increasing the height of the arc extinguishing device.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In one aspect of the utility model, an arc extinguishing device is provided, the arc extinguishing device comprises a magnetic component, a first arc extinguishing component and a second arc extinguishing component arranged side by side along a first direction; the first arc extinguishing component and the second arc extinguishing component each comprise at least one arc extinguishing structure, any arc extinguishing structure of the first arc extinguishing component is connected to one of the arc extinguishing structures of the second arc extinguishing component at the same potential; the magnetic component comprises a plurality of permanent magnets, the plurality of permanent magnets are arranged at intervals along a second direction, and the magnetic pole direction of each permanent magnet, the first direction and the second direction are perpendicular to each other. The arc extinguishing device can improve the arc extinguishing effect of the arc extinguishing device without increasing the height of the arc extinguishing device.

[0007] Optionally, the arc extinguishing device further comprises a bracket, and the first arc extinguishing assembly, the second arc extinguishing assembly and the magnetic assembly are respectively connected to the bracket.

[0008] Optionally, the first arc extinguishing assembly and the second arc extinguishing assembly both include a plurality of arc extinguishing structures arranged at intervals along the second direction; the bracket includes a first body, a plurality of first partitions connected to one side of the first body, and a plurality of second partitions connected to the other side of the first body; the first partition is used to separate two adjacent arc extinguishing structures of the first arc extinguishing assembly, and the second partition is used to separate two adjacent arc extinguishing structures of the second arc extinguishing assembly.

[0009] Optionally, a plurality of accommodating cavities are provided on the first body, the plurality of accommodating cavities are spaced apart along the second direction, a plurality of permanent magnets are arranged in the plurality of accommodating cavities in a one-to-one correspondence, and each permanent magnet includes a sub-permanent magnet.

[0010] Optionally, a plurality of accommodating cavities are provided on the first body, the plurality of accommodating cavities are spaced apart along the second direction, a plurality of permanent magnets are arranged in the plurality of accommodating cavities in a one-to-one correspondence, and each permanent magnet includes two sub-permanent magnets with opposite magnetic pole directions.

[0011] Optionally, the magnetic components include two groups, and the two groups of magnetic components are distributed on opposite sides of the bracket along the first direction.

[0012] Optionally, the arc extinguishing device also includes a shell having a receiving cavity, and the magnetic component, the first arc extinguishing component and the second arc extinguishing component are respectively arranged in the receiving cavity; a plurality of grooves are provided on the inner wall of the shell, and a plurality of permanent magnets are arranged in the plurality of grooves in a one-to-one correspondence.

[0013] Optionally, the magnetic poles of any two permanent magnets disposed adjacent to each other along the second direction are in opposite directions.

[0014] Optionally, the magnetic pole directions of any two permanent magnets adjacent to each other along the second direction are the same.

[0015] Another aspect of the utility model provides a switch device, which includes the above-mentioned arc extinguishing device.

[0016] The beneficial effects of the utility model include:

[0017] The arc extinguishing device provided by the present application includes a magnetic component, a first arc extinguishing component and a second arc extinguishing component arranged side by side along a first direction; the first arc extinguishing component and the second arc extinguishing component both include at least one arc extinguishing structure, and any arc extinguishing structure of the first arc extinguishing component is connected to one of the arc extinguishing structures of the second arc extinguishing component at the same potential; the magnetic component includes a plurality of permanent magnets, and the plurality of permanent magnets are arranged at intervals along the second direction, and the magnetic pole direction, the first direction and the second direction of each permanent magnet are perpendicular to each other. The present application arranges the first arc extinguishing component and the second arc extinguishing component side by side along the first direction, so that the first arc extinguishing component and the second arc extinguishing component can carry the current in series at the same time, and more grids can be arranged without increasing the height of the arc extinguishing device, thereby improving the arc extinguishing effect. At the same time, the present application can enhance the electromagnetic attraction of the arc extinguishing device by arranging a magnetic component with a plurality of permanent magnets, so that the arc extinguishing effect of the arc extinguishing device can be further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 One of the structural schematic diagrams of the arc extinguishing device provided in the embodiment of the utility model;

[0020] Figure 2 The second structural schematic diagram of the arc extinguishing device provided in the embodiment of the utility model;

[0021] Figure 3 The third structural diagram of the arc extinguishing device provided in the embodiment of the utility model;

[0022] Figure 4 A fourth structural diagram of the arc extinguishing device provided in an embodiment of the utility model;

[0023] Figure 5 A fifth structural diagram of the arc extinguishing device provided in an embodiment of the utility model;

[0024] Figure 6 A partial structural schematic diagram of a first arc extinguishing assembly and a second arc extinguishing assembly provided in an embodiment of the utility model;

[0025] Figure 7 One of the structural schematic diagrams of the housing provided in the embodiment of the utility model;

[0026] Figure 8 The second structural schematic diagram of the housing provided by the embodiment of the utility model;

[0027] Fig. 9 One of the structural schematic diagrams of the bracket provided in the embodiment of the utility model;

[0028] Fig.10 A second structural schematic diagram of a bracket provided in an embodiment of the utility model;

[0029] Fig.11 One of the schematic diagrams of the arrangement of the magnetic assembly provided in the embodiment of the utility model;

[0030] Fig.12 A second schematic diagram of the arrangement of the magnetic assembly provided in the embodiment of the utility model;

[0031] Fig.13 The third schematic diagram of the arrangement of the magnetic assembly provided in the embodiment of the utility model;

[0032] Fig.14 for Fig.13 Schematic diagram of another perspective of the arrangement of the magnetic components.

[0033] Icons: 10-first arc extinguishing assembly; 20-second arc extinguishing assembly; 30-arc extinguishing structure; 31-first grid; 32-second grid; 321-first extension; 33-third grid; 331-second extension; 40-connecting structure; 411-first recess; 412-second recess; 42-support foot; 50-bracket; 51-first arc running channel; 52-second arc running channel; 53-first body; 531-accommodating cavity; 532-installing groove; 54-first partition; 55-second partition; 60-permanent magnet; 61-sub-permanent magnet; 70-gas producing part; 71-gap; 80-guide rib; 81-flame extinguishing gas duct; 90-shell; 91-gas outlet; a-first direction; b-second direction; c-magnetic pole direction of permanent magnet. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0038] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0039] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Please refer to Figures 1 to 4 as well as Figures 11 to 14This embodiment provides an arc extinguishing device, which includes a magnetic component, a first arc extinguishing component 10 and a second arc extinguishing component 20 arranged side by side along a first direction a; the first arc extinguishing component 10 and the second arc extinguishing component 20 each include at least one arc extinguishing structure 30, and any arc extinguishing structure 30 of the first arc extinguishing component 10 is connected to one of the arc extinguishing structures 30 of the second arc extinguishing component 20 at the same potential; the magnetic component includes a plurality of permanent magnets 60, and the plurality of permanent magnets 60 are arranged at intervals along a second direction b, and the magnetic pole direction c of each permanent magnet, the first direction a, and the second direction b are perpendicular to each other. The arc extinguishing device can improve the arc extinguishing effect of the arc extinguishing device without increasing the height of the arc extinguishing device.

[0041] The arc extinguishing device provided in the present application comprises a first arc extinguishing assembly 10, a second arc extinguishing assembly 20 and a magnetic assembly, wherein: Figure 3 and Figure 4 As shown, the first arc extinguishing assembly 10 and the second arc extinguishing assembly 20 are arranged side by side along the first direction a.

[0042] The first arc extinguishing assembly 10 and the second arc extinguishing assembly 20 each include at least one arc extinguishing structure 30. When the first arc extinguishing assembly 10 and the second arc extinguishing assembly 20 each include a plurality of arc extinguishing structures 30, such as Figure 3 and Figure 4 As shown, the multiple arc extinguishing structures 30 of the first arc extinguishing assembly 10 are arranged at intervals along the second direction b, and the multiple arc extinguishing structures 30 of the second arc extinguishing assembly 20 are also arranged at intervals along the second direction b. The second direction b is perpendicular to the first direction a. In this embodiment, the first direction a is the width direction of the arc extinguishing device, and the second direction b is the height direction of the arc extinguishing device.

[0043] Any arc extinguishing structure 30 of the first arc extinguishing assembly 10 is connected to one of the arc extinguishing structures 30 of the second arc extinguishing assembly 20 at the same potential, so that the arc entering the arc extinguishing device can be connected in series. Among them, the present application does not limit the specific method of connecting any arc extinguishing structure 30 of the first arc extinguishing assembly 10 to one of the arc extinguishing structures 30 of the second arc extinguishing assembly 20 at the same potential. For example, any arc extinguishing structure 30 of the first arc extinguishing assembly 10 can be directly connected to one of the arc extinguishing structures 30 of the second arc extinguishing assembly 20, or indirectly connected through other components.

[0044] The present application arranges the first arc extinguishing assembly 10 and the second arc extinguishing assembly 20 side by side along the first direction a, so that the first arc extinguishing assembly 10 and the second arc extinguishing assembly 20 can simultaneously carry the series current, and more grids can be arranged without increasing the height of the arc extinguishing device, thereby improving the arc extinguishing effect of the arc extinguishing device.

[0045] In addition, the present application also includes a magnetic assembly, which includes a plurality of permanent magnets 60, and the plurality of permanent magnets 60 are arranged at intervals along the second direction b, such as Figures 11 to 14 As shown. In this embodiment, the magnetic pole direction c (i.e., the third direction), the first direction a, and the second direction b of each permanent magnet are arranged perpendicularly in pairs. The present application can further enhance the electromagnetic attraction of the arc extinguishing device by providing a magnetic component with multiple permanent magnets 60, so that the arc extinguishing effect of the arc extinguishing device is better; at the same time, non-polarity disconnection can be achieved, that is, whether the current is connected forward or reverse, it will not affect the disconnection performance.

[0046] In summary, the arc extinguishing device provided by the present application includes a magnetic component, a first arc extinguishing component 10 and a second arc extinguishing component 20 arranged side by side along a first direction a; the first arc extinguishing component 10 and the second arc extinguishing component 20 each include at least one arc extinguishing structure 30, and any arc extinguishing structure 30 of the first arc extinguishing component 10 is connected to one of the arc extinguishing structures 30 of the second arc extinguishing component 20 at the same potential; the magnetic component includes a plurality of permanent magnets 60, and the plurality of permanent magnets 60 are arranged at intervals along the second direction b, and the magnetic pole direction c, the first direction a, and the second direction b of each permanent magnet are perpendicular to each other. The present application arranges the first arc extinguishing component 10 and the second arc extinguishing component 20 side by side along the first direction a, so that the first arc extinguishing component 10 and the second arc extinguishing component 20 can carry the current in series at the same time, and more grids can be arranged without increasing the height of the arc extinguishing device, thereby improving the arc extinguishing effect. At the same time, the present application can enhance the electromagnetic attraction of the arc extinguishing device by arranging a magnetic component with a plurality of permanent magnets 60, so that the arc extinguishing effect of the arc extinguishing device can be further improved.

[0047] It should be noted that, optionally, please refer to Figure 5 and Figure 6 The arc extinguishing structure 30 may include a first grid 31 and a second grid 32 and a third grid 33 respectively arranged on opposite sides of the first grid 31, and the second grid 32, the first grid 31 and the third grid 33 are arranged at intervals along the second direction b; the third grid 33 of any arc extinguishing structure 30 of the first arc extinguishing assembly 10 is connected to the second grid 32 of one of the arc extinguishing structures 30 of the second arc extinguishing assembly 20 at the same potential, and the second grid 32 of any arc extinguishing structure 30 of the first arc extinguishing assembly 10 is connected to the third grid 33 of one of the arc extinguishing structures 30 of the second arc extinguishing assembly 20 at the same potential.

[0048] The specific number of the first grid plates 31 is not limited in this application. For example, Figure 5 and Figure 6 As shown, three first grids 31 are used, and the three first grids 31 are arranged at intervals from each other. Of course, in other embodiments, more or fewer first grids 31 can be arranged according to the height requirements of the arc extinguishing device along the second direction b, for example, the number of the first grids 31 is two, four, five, etc.

[0049] The second grid sheet 32 ​​and the third grid sheet 33 are respectively located at opposite sides of the first grid sheet 31. The second grid sheet 32, the first grid sheet 31 and the third grid sheet 33 are arranged at intervals along the second direction b. Figure 4 and Figure 6 shown.

[0050] In this embodiment, the third grid piece 33 of any arc extinguishing structure 30 of the first arc extinguishing assembly 10 is connected to the second grid piece 32 of one of the arc extinguishing structures 30 of the second arc extinguishing assembly 20 at the same potential, and the second grid piece 32 of any arc extinguishing structure 30 of the first arc extinguishing assembly 10 is connected to the third grid piece 33 of one of the arc extinguishing structures 30 of the second arc extinguishing assembly 20 at the same potential. Figure 5 and Figure 6 shown.

[0051] In the present embodiment, the equipotential connection between the second grid 32 of the first arc extinguishing assembly 10 and the third grid 33 of the second arc extinguishing assembly 20, and the third grid 33 of the first arc extinguishing assembly 10 and the second grid 32 of the second arc extinguishing assembly 20 can be staggered connection. For ease of understanding, it is assumed that the first arc extinguishing assembly 10 includes a first arc extinguishing structure 30, a second arc extinguishing structure 30 and a third arc extinguishing structure 30 arranged from top to bottom, and the second arc extinguishing assembly 20 includes a first arc extinguishing structure 30, a second arc extinguishing structure 30 and a third arc extinguishing structure 30 arranged from top to bottom. At this time, the second grid 32 of the first arc extinguishing structure 30 of the first arc extinguishing assembly 10 can be equipotentially connected to the third grid 33 of the first arc extinguishing structure 30 of the second arc extinguishing assembly 20, and the third grid 33 of the first arc extinguishing structure 30 of the first arc extinguishing assembly 10 can be equipotentially connected to the second grid 32 of the second arc extinguishing structure 30 of the second arc extinguishing assembly 20, as shown in FIG. Figure 4 and Figure 6 shown.

[0052] Optionally, the third grid piece 33 of an arc extinguishing structure 30 of one arc extinguishing assembly is connected to the same potential with the second grid piece 32 of an arc extinguishing structure 30 of another arc extinguishing assembly through a connecting structure 40. That is to say, the third grid piece 33 of any arc extinguishing structure 30 of the first arc extinguishing assembly 10 is connected to the second grid piece 32 of one of the arc extinguishing structures 30 of the second arc extinguishing assembly 20 through the connecting structure 40. The second grid piece 32 of any arc extinguishing structure 30 of the first arc extinguishing assembly 10 is connected to the third grid piece 33 of one of the arc extinguishing structures 30 of the second arc extinguishing assembly 20 through the connecting structure 40.

[0053] It should be noted that the connection structure 40 can be formed in at least the following two ways:

[0054] The first method: Optionally, the second grid piece 32 has a first extension portion 321, and the third grid piece 33 has a second extension portion 331; the second extension portion 331 of an arc extinguishing structure 30 of one arc extinguishing assembly is interconnected with the first extension portion 321 of an arc extinguishing structure 30 of another arc extinguishing assembly to form a connecting structure 40.

[0055] That is to say, no matter the arc extinguishing structure 30 of the first arc extinguishing assembly 10 or the arc extinguishing structure 30 of the second arc extinguishing assembly 20, the second grid piece 32 of each arc extinguishing structure 30 has a first extension portion 321, and the third grid piece 33 of each arc extinguishing structure 30 has a second extension portion 331, such as Figure 6 The arc extinguishing structure 30 of the first arc extinguishing assembly 10 and the arc extinguishing structure 30 of the second arc extinguishing assembly 20 are connected to each other through the equipotential connection of the connection structure 40, which can be formed by connecting the first extension portion 321 and the second extension portion 331 to each other. That is, in this embodiment, the connection structure 40 is formed by connecting the first extension portion 321 and the second extension portion 331.

[0056] In simple terms, the second extension portion 331 of one of the arc extinguishing structures 30 of the first arc extinguishing assembly 10 is connected to the first extension portion 321 of one of the arc extinguishing structures 30 of the second arc extinguishing assembly 20, and the first extension portion 321 of one of the arc extinguishing structures 30 of the first arc extinguishing assembly 10 is connected to the second extension portion 331 of one of the arc extinguishing structures 30 of the second arc extinguishing assembly 20.

[0057] The second mode: Optionally, the second grid piece 32 has a first extension portion 321, and the third grid piece 33 has a second extension portion 331; the second extension portion 331 of an arc extinguishing structure 30 of one arc extinguishing assembly is arranged at an interval with the first extension portion 321 of an arc extinguishing structure 30 of another arc extinguishing assembly, and is electrically connected through the arc generated by the switching device to form a connection structure 40, please refer to Figure 6 .

[0058] That is to say, the difference between this method and the first method is that the first method directly connects the second extension part 331 of one arc extinguishing structure 30 of one arc extinguishing assembly and the first extension part 321 of one arc extinguishing structure 30 of another arc extinguishing assembly to form the connection structure 40. However, the present method arranges the second extension part 331 of one arc extinguishing structure 30 of one arc extinguishing assembly and the first extension part 321 of one arc extinguishing structure 30 of another arc extinguishing assembly at intervals, and then electrically connects the two through the arc generated by the switching device to form the connection structure 40, as shown in FIG. Figure 5 and Figure 6 shown.

[0059] It should be noted that the above two methods are only examples, and those skilled in the art can select any one of them as needed in actual use.

[0060] Please refer to Figures 4 to 6 Optionally, the multiple arc extinguishing structures 30 of the first arc extinguishing assembly 10 and the multiple arc extinguishing structures 30 of the second arc extinguishing assembly 20 are arranged alternately; the second extension portion 331 of any one of the arc extinguishing structures 30 of the first arc extinguishing assembly 10 is located on the adjacent side of the first extension portion 321 of one of the arc extinguishing structures 30 of the second arc extinguishing assembly 20 along the second direction b.

[0061] That is to say, the plurality of arc extinguishing structures 30 of the first arc extinguishing assembly 10 and the plurality of arc extinguishing structures 30 of the second arc extinguishing assembly 20 may be arranged in a staggered manner, such as Figure 3 and Figure 4 That is, one arc extinguishing structure 30 of the first arc extinguishing assembly 10 is staggered with other arc extinguishing structures 30 of the second arc extinguishing assembly 20 along the first direction a. In this way, the arc can be staggered along the first direction a, which is more conducive to arc extinguishing.

[0062] The second extension portion 331 of any arc extinguishing structure 30 of the first arc extinguishing assembly 10 is located on the adjacent side of the first extension portion 321 of one of the arc extinguishing structures 30 of the second arc extinguishing assembly 20 along the second direction b. In this way, it is more convenient to connect the second extension portion 331 and the first extension portion 321 of different arc extinguishing assemblies.

[0063] Please continue to refer to Figure 6 Optionally, an arc-striking recess is provided on the connecting structure 40, and the arc-striking recess includes a first recess 411 and a second recess 412; the first recess 411 is opposite to the corresponding arc-extinguishing structure 30 of the first arc-extinguishing assembly 10, and the second recess 412 is opposite to the corresponding arc-extinguishing structure 30 of the second arc-extinguishing assembly 20.

[0064] It should be noted that when the connecting structure 40 is formed by a directly connected first extension portion 321 and a second extension portion 331, the first recess 411 and the second recess 412 are both provided on the connecting structure 40, wherein the first recess 411 faces the corresponding arc extinguishing structure 30 of the first arc extinguishing assembly 10, and the second recess 412 faces the corresponding arc extinguishing structure 30 of the second arc extinguishing assembly 20.

[0065] When the connection structure 40 is formed by the first extension portion 321 and the second extension portion 331 which are spaced apart from each other by the arc electrical connection, the first notch 411 and the second notch 412 are respectively formed on the first extension portion 321 and the second extension portion 331. The first notch 411 faces the corresponding arc extinguishing structure 30 of the first arc extinguishing assembly 10, and the second notch 412 faces the corresponding arc extinguishing structure 30 of the second arc extinguishing assembly 20. Figure 6 shown.

[0066] The present application provides arc-striking recesses including a first recess 411 and a second recess 412, so that the arc can be introduced into the arc-extinguishing structure 30 of the first arc-extinguishing component 10 and the arc-extinguishing structure 30 of the second arc-extinguishing component 20 distributed along the first direction a, respectively, thereby effectively improving the arc-extinguishing effect of the arc-extinguishing device.

[0067] Please refer to Figure 1 , Figure 2 and Figure 6 Optionally, the connection structure 40 may further include two legs 42 spaced apart along the first direction a, and the moving contact of the switch device is located between the two legs 42 .

[0068] It should be noted that when the connection structure 40 is formed by the first extension portion 321 and the second extension portion 331 that are directly connected, the two legs 42 are both disposed on the connection structure 40 .

[0069] When the connection structure 40 is formed by connecting the first extension portion 321 and the second extension portion 331 spaced apart from each other by electric arc, two legs 42 may be provided on each of the first extension portion 321 and the second extension portion 331. Figure 5 and Figure 6 shown.

[0070] Please refer to Figure 1 and Figure 2 Optionally, the arc extinguishing device further includes a gas producing member 70, which is sleeved on the outer periphery of the support leg 42; there is a gap 71 between two gas producing members 70 arranged adjacent to each other along the first direction a, and the gap 71 is used to accommodate the moving contact. The present application can accelerate the arc to enter the arc extinguishing device and promote the flow of the arc in the arc extinguishing device by arranging the gas producing member 70, thereby accelerating the extinguishing of the arc.

[0071] Please refer to Figure 1 , Figure 2 , Figure 7 and Figure 8 Optionally, the arc extinguishing device also includes a flame extinguishing gas duct 81 and a flame extinguishing grid, the flame extinguishing gas duct 81 is arranged on the side of the first arc extinguishing assembly 10 and the second arc extinguishing assembly 20 respectively away from the moving contact of the switching device, and the flame extinguishing gas duct 81 is located between the flame extinguishing grid and the first arc extinguishing assembly 10.

[0072] That is, the flame extinguishing grid, the flame extinguishing gas channel 81 and the first arc extinguishing assembly 10 (or the second arc extinguishing assembly 20) are arranged along the third direction, and the third direction, the first direction a and the second direction b are perpendicular to each other. The arrangement of the flame extinguishing grid and the flame extinguishing gas channel 81 can further improve the arc extinguishing effect of the arc extinguishing device.

[0073] A plurality of guide ribs 80 arranged along the second direction b are arranged in the arc extinguishing device housing 90, and the gap between two adjacent guide ribs 80 is used to form a flame extinguishing gas channel 81. The flame extinguishing grid can be arranged on the side of the housing 90 away from the moving contact.

[0074] In addition, in order to facilitate the discharge of gas, the arc extinguishing device may also be provided with a gas outlet 91, wherein the gas outlet 91 is located on the side of the flame extinguishing grid away from the flame extinguishing gas channel 81, such as Figure 1 shown.

[0075] In order to support the first arc extinguishing assembly 10, the second arc extinguishing assembly 20 and the magnetic assembly, optionally, in this embodiment, the arc extinguishing device also includes a bracket 50, and the first arc extinguishing assembly 10, the second arc extinguishing assembly 20 and the magnetic assembly are respectively connected to the bracket 50.

[0076] Among them, optionally, the first arc extinguishing assembly 10 and the second arc extinguishing assembly 20 both include a plurality of arc extinguishing structures 30 arranged at intervals along the second direction b. At this time, the above-mentioned bracket 50 may include a first body 53, a plurality of first partitions 54 connected to one side of the first body 53, and a plurality of second partitions 55 connected to the other side of the first body 53; the first partition 54 is used to separate two adjacent arc extinguishing structures 30 of the first arc extinguishing assembly 10, and the second partition 55 is used to separate two adjacent arc extinguishing structures 30 of the second arc extinguishing assembly 20.

[0077] It should be noted that a plurality of mounting grooves 532 may be respectively provided on the side of the first body 53 facing the first partition 54 and the side facing the second partition 55. Fig. 9 As shown. In this way, the multiple installation grooves 532 on the side of the first body 53 facing the first partition 54 can be used to insert the grid pieces of the first arc extinguishing assembly 10 (i.e., the first grid piece 31, the second grid piece 32, and the third grid piece 33 of the first arc extinguishing assembly 10), and the multiple installation grooves 532 on the side of the first body 53 facing the second partition 55 can be used to insert the grid pieces of the second arc extinguishing assembly 20 (i.e., the first grid piece 31, the second grid piece 32, and the third grid piece 33 of the second arc extinguishing assembly 20). The present application adopts the method of inserting and connecting the grid pieces with the installation grooves 532 to facilitate the installation and removal of the grid pieces.

[0078] Please refer to Fig.10 The upper bracket 50 may also be provided with multiple first arc running channels 51 and multiple second arc running channels 52. The multiple first arc running channels 51 correspond to the multiple arc extinguishing structures 30 of the first arc extinguishing assembly 10, and the multiple second arc running channels 52 correspond to the multiple arc extinguishing structures 30 of the second arc extinguishing assembly 20.

[0079] That is to say, the multiple first arc running channels 51 correspond one-to-one to the multiple arc extinguishing structures 30 of the first arc extinguishing assembly 10, and the multiple second arc running channels 52 correspond one-to-one to the multiple arc extinguishing structures 30 of the second arc extinguishing assembly 20. In this way, each first arc running channel 51 can guide the arc to the corresponding arc extinguishing structure 30 in the first arc extinguishing assembly 10, and each second arc running channel 52 can guide the arc to the corresponding arc extinguishing structure 30 in the second arc extinguishing assembly 20.

[0080] In this embodiment, the projections of the first arc running channel 51 and the second arc running channel 52 in the second direction b are arranged crosswise in an "X" shape or an "eight" shape. It should be noted that the above-mentioned "X" shape or "eight" shape means that the projections of the first arc running channel 51 and the second arc running channel 52 in the second direction b are similar to the "X" shape or the "eight" shape, and it is not required to be a standard "X" shape or "eight" shape.

[0081] It should be noted that the magnetic components of the present application may be arranged in a variety of ways, and several typical arrangements will be described below by way of examples.

[0082] In the first setting, optionally, Fig. 9 and Fig.11 As shown, a plurality of accommodating cavities 531 are provided on the first body 53 , and the plurality of accommodating cavities 531 are arranged at intervals along the second direction b. A plurality of permanent magnets 60 are arranged in the plurality of accommodating cavities 531 in a one-to-one correspondence, and each permanent magnet 60 includes a sub-permanent magnet 61 .

[0083] That is to say, in this configuration, the magnetic component is disposed on the first body 53 of the bracket 50 , and a sub-permanent magnet 61 is respectively disposed in each accommodating cavity 531 on the bracket 50 .

[0084] In the second setting, optionally, Fig. 9 and Fig.12 As shown, a plurality of accommodating cavities 531 are provided on the first body 53, and the plurality of accommodating cavities 531 are arranged at intervals along the second direction b. A plurality of permanent magnets 60 are arranged in the plurality of accommodating cavities 531 in a one-to-one correspondence, and each permanent magnet 60 includes two sub-permanent magnets with opposite magnetic pole directions.

[0085] The difference between this arrangement and the first arrangement is that in this arrangement, two sub-permanent magnets 61 are arranged in each accommodating cavity 531, and the magnetic pole directions of the two sub-permanent magnets 61 are arranged in opposite directions. By placing two sub-permanent magnets in each accommodating cavity 531, the present application can make the magnetic blowing force of the arc extinguishing device greater, thereby improving the arc extinguishing effect.

[0086] In the third setting mode, optionally, as Fig.13 and Fig.14As shown, the magnetic components include two groups, and the two groups of magnetic components are distributed on opposite sides of the bracket 50 along the first direction a.

[0087] That is to say, in this arrangement, the arc extinguishing device is provided with two groups of magnetic components, and the two groups of magnetic components are respectively located on the side of the first arc extinguishing component 10 and the second arc extinguishing component 20 that are away from each other.

[0088] In the third configuration, each permanent magnet 60 of each group of magnetic components may include one sub-permanent magnet 61 or two sub-permanent magnets 61 , which is not limited in the present application.

[0089] Please refer to Figure 1 and Figure 2 As shown, optionally, the arc extinguishing device further includes a shell 90 having a receiving cavity, and the magnetic component, the first arc extinguishing component 10 and the second arc extinguishing component 20 are respectively arranged in the receiving cavity.

[0090] It should be noted that, in order to support the magnetic assembly in the third arrangement, optionally, a plurality of grooves are provided on the inner wall of the shell 90, and a plurality of permanent magnets 60 are disposed in the plurality of grooves in a one-to-one correspondence.

[0091] In addition, it should be noted that, in this embodiment, optionally, the magnetic pole directions c of any two permanent magnets disposed adjacent to each other along the second direction b are opposite. The magnetic pole directions c of the permanent magnets and the sub-permanent magnets 61 are both in the third direction.

[0092] That is, among the plurality of permanent magnets 60 arranged along the second direction b included in the magnetic assembly, the magnetic pole directions c of any two adjacent permanent magnets are arranged oppositely (for example, Fig.11 Taking the orientation shown in the figure as an example, the magnetic pole direction c of one permanent magnet is perpendicular to the paper surface and inward, while the magnetic pole direction of the other adjacent permanent magnet is perpendicular to the paper surface and outward). The present application can obtain a better arc extinguishing effect by the above arrangement. Of course, the magnetic pole directions c of any two adjacent permanent magnets in each group of magnetic components are opposite only for example. In other embodiments, the magnetic pole directions c of any two permanent magnets arranged adjacent to each other along the second direction b may be the same, that is, the magnetic pole directions c of any two adjacent permanent magnets in each group of magnetic components are the same.

[0093] Another aspect of the present invention provides a switch device, which includes the arc extinguishing device mentioned above. Since the specific structure and technical effects of the arc extinguishing device have been described and explained in detail above, this application will not repeat them here.

[0094] The above description is only an optional embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0095] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

Claims

1. An arc extinguishing device, characterized in that: The invention comprises a magnetic component, a first arc extinguishing component (10) and a second arc extinguishing component (20) arranged side by side along a first direction (a); the first arc extinguishing component (10) and the second arc extinguishing component (20) each comprise at least one arc extinguishing structure (30), and any arc extinguishing structure (30) of the first arc extinguishing component (10) is connected to one of the arc extinguishing structures (30) of the second arc extinguishing component (20) at the same potential; the magnetic component comprises a plurality of permanent magnets (60), the plurality of permanent magnets (60) are arranged at intervals along a second direction (b), and the magnetic pole direction (c) of each permanent magnet, the first direction (a) and the second direction (b) are perpendicular to each other.

2. The arc extinguishing device according to claim 1, characterized in that: The arc extinguishing device further comprises a bracket (50), and the first arc extinguishing component (10), the second arc extinguishing component (20) and the magnetic component are respectively connected to the bracket (50).

3. The arc extinguishing device according to claim 2, characterized in that: The first arc extinguishing assembly (10) and the second arc extinguishing assembly (20) both include a plurality of arc extinguishing structures (30) arranged at intervals along a second direction (b); the bracket (50) includes a first body (53), a plurality of first partitions (54) connected to one side of the first body (53), and a plurality of second partitions (55) connected to the other side of the first body (53); the first partition (54) is used to separate two adjacent arc extinguishing structures (30) of the first arc extinguishing assembly (10), and the second partition (55) is used to separate two adjacent arc extinguishing structures (30) of the second arc extinguishing assembly (20).

4. The arc extinguishing device according to claim 3, characterized in that: A plurality of accommodating cavities (531) are provided on the first body (53), the plurality of accommodating cavities (531) are arranged at intervals along the second direction (b), the plurality of permanent magnets (60) are arranged in the plurality of accommodating cavities (531) in a one-to-one correspondence, and each of the permanent magnets (60) includes a sub-permanent magnet (61).

5. The arc extinguishing device according to claim 3, characterized in that: A plurality of accommodating cavities (531) are provided on the first body (53), the plurality of accommodating cavities (531) are arranged at intervals along the second direction (b), the plurality of permanent magnets (60) are arranged in the plurality of accommodating cavities (531) in a one-to-one correspondence, and each of the permanent magnets (60) comprises two sub-permanent magnets with opposite magnetic pole directions.

6. The arc extinguishing device according to claim 3, characterized in that: The magnetic components include two groups, and the two groups of magnetic components are distributed on opposite sides of the bracket (50) along the first direction (a).

7. The arc extinguishing device according to claim 6, characterized in that: The arc extinguishing device also includes a shell (90) having a receiving cavity, wherein the magnetic component, the first arc extinguishing component (10) and the second arc extinguishing component (20) are respectively arranged in the receiving cavity; a plurality of grooves are provided on the inner wall of the shell (90), and the plurality of permanent magnets (60) are arranged in the plurality of grooves in a one-to-one correspondence.

8. The arc extinguishing device according to any one of claims 4 to 7, characterized in that: The magnetic pole directions (c) of any two permanent magnets disposed adjacent to each other along the second direction (b) are opposite.

9. The arc extinguishing device according to any one of claims 4 to 7, characterized in that: The magnetic pole directions (c) of any two permanent magnets adjacently arranged along the second direction (b) are the same.

10. A switching device, characterized in that: The arc extinguishing device comprises the arc extinguishing device as described in any one of claims 1 to 9.

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