Arc extinguishing device and switching device

Abstract

This application discloses an arc-extinguishing device and a switching device, relating to the field of electrical equipment technology. The arc-extinguishing device proposed in this application includes a first side plate, a second side plate, a first gas-generating block, a second gas-generating block, and a third gas-generating block. The first and second side plates are arranged opposite each other, forming an installation space between them. The first and second gas-generating blocks are arranged opposite each other within the installation space. The third gas-generating block is located between the first and second gas-generating blocks, and the first, second, and third gas-generating blocks are integrally formed, with a magnetic component mounted on the third gas-generating block. The first gas-generating block is connected to the first side plate, and / or the second gas-generating block is connected to the second side plate. This simplifies the assembly of the arc-extinguishing device. Furthermore, the first, second, and third gas-generating blocks can generate a large amount of gas under the action of an electric arc, and can also cooperate with the magnetic component to improve the arc-extinguishing effect of the arc-extinguishing device.

Description

Technical Field

[0001] This application relates to the field of electrical equipment technology, and in particular to an arc extinguishing device and a switching device. Background Technology

[0002] Switching devices, as electrical appliances that can connect or disconnect circuits, typically include moving contacts and stationary contacts. The moving contact can be based on electromagnetic, pneumatic, or mechanical transmission principles to connect or disconnect the moving contact and the stationary contact, thereby controlling the on / off state of the circuit.

[0003] When switching devices are operating, electric arcs can easily form between the moving and stationary contacts. These arcs have adverse effects on the moving and stationary contacts, as well as other insulation materials within the switching device. To reduce the damage caused by electric arcs to the circuit breaker, switching devices are generally equipped with arc-extinguishing devices. When an arc is generated, the arc-extinguishing device can accelerate its extinction, thus protecting the circuit breaker.

[0004] In related technologies, the arc extinguishing device is not set up reasonably, which makes the assembly of the arc extinguishing device more complicated and the arc extinguishing effect is poor. Utility Model Content

[0005] This application provides an arc extinguishing device and a switching device, which can simplify the assembly process of the arc extinguishing device and improve the arc extinguishing effect of the arc extinguishing device.

[0006] In a first aspect, this application provides an arc-extinguishing device, including a first side plate, a second side plate, a first gas-generating block, a second gas-generating block, and a third gas-generating block. The first side plate and the second side plate are disposed opposite to each other, forming an installation space between them. The first gas-generating block and the second gas-generating block are disposed opposite to each other within the installation space. The third gas-generating block is located between the first gas-generating block and the second gas-generating block, and the first gas-generating block, the second gas-generating block, and the third gas-generating block are integrally formed, with a magnetic component mounted on the third gas-generating block. The first gas-generating block is connected to the first side plate, and / or the second gas-generating block is connected to the second side plate.

[0007] In the arc-extinguishing device proposed in this application, the first gas-generating block, the second gas-generating block, and the third gas-generating block can be installed as a single unit, making the assembly of the arc-extinguishing device relatively simple. Furthermore, all three gas-generating blocks can generate gas under the action of an electric arc, increasing the gas production during operation. The generated gas can work in conjunction with magnetic components to improve the arc-extinguishing effect of the device.

[0008] Optionally, when the first gas-generating block is installed on the first side plate, a first snap-fit ​​structure is provided on the first side plate, and a second snap-fit ​​structure is provided on the first gas-generating block. The first snap-fit ​​structure is one of a snap-fit ​​platform and a snap-fit ​​groove, and the second snap-fit ​​structure is the other of a snap-fit ​​platform and a snap-fit ​​groove, with the snap-fit ​​platform embedded in the snap-fit ​​groove.

[0009] Thus, the first snap-fit ​​structure can snap into the second snap-fit ​​structure, thereby enabling the connection between the first gas-generating block and the first side plate, and achieving the overall installation of the first gas-generating block, the second gas-generating block, and the third gas-generating block.

[0010] Optionally, there are multiple first snap-fit ​​structures and multiple second snap-fit ​​structures, with each of the multiple first snap-fit ​​structures being embedded in a corresponding second snap-fit ​​structure.

[0011] This allows for more engagement points between the first gas-generating block and the first side plate, resulting in a more stable engagement between them.

[0012] Optionally, when the second gas-generating block is installed on the second side plate, a third snap-fit ​​structure is provided on the second side plate, and a fourth snap-fit ​​structure is provided on the second gas-generating block. The third snap-fit ​​structure is one of a snap-fit ​​post and a snap-fit ​​groove, and the fourth snap-fit ​​structure is the other of a snap-fit ​​post and a snap-fit ​​groove, with the snap-fit ​​post embedded in the snap-fit ​​groove.

[0013] Thus, the third snap-fit ​​structure can snap-fit ​​with the fourth snap-fit ​​structure, thereby enabling the connection between the second gas-generating block and the second side plate, and achieving the overall installation of the first, second, and third gas-generating blocks.

[0014] Optionally, the arc-extinguishing device has intersecting first and second directions, and a plurality of arc-extinguishing grids distributed along the first direction are provided between the first side plate and the second side plate. The arc-extinguishing grids and the first gas-generating block are distributed in the installation space along the second direction.

[0015] A first fixing groove is provided on the first side plate, and the arc-extinguishing grid plate is embedded in the first fixing groove on the side facing the first side plate and is connected to the groove wall of the first fixing groove. And / or, a second fixing groove is provided on the second side plate, and the arc-extinguishing grid plate is embedded in the second fixing groove on the side facing the second side plate and is connected to the groove wall of the second fixing groove.

[0016] In this way, when an electric arc is generated, multiple arc-extinguishing grids can cut the arc into multiple short arcs, thereby increasing the arc's resistance, limiting the arc's current, and extinguishing the arc.

[0017] Optionally, the arc-extinguishing device further includes a first arc-initiating plate, which is located on one side of the arc-extinguishing grid in the first direction. The first arc-initiating plate includes a first substrate and a first pin, the first pin being connected to the first substrate, and the first substrate being connected to a first side plate and / or a second side plate. The first pin has a first included angle with the first substrate, a portion of the first pin is located between the first gas-generating block and the second gas-generating block, and the first pin is opposite to the third gas-generating block.

[0018] With the above settings, if the whole formed by the first gas generating block, the second gas generating block, and the third gas generating block fails at some point, the first arc ignition plate can limit it through the first pin, reducing the possibility that the whole formed by the first gas generating block, the second gas generating block, and the third gas generating block will detach from the arc extinguishing device.

[0019] Optionally, the first pin is tilted away from the arc-extinguishing grid.

[0020] In this way, when an electric arc is generated, the first pin can guide the arc, so that more arcs can enter the gap of the arc-extinguishing grid more quickly, reducing the possibility that some arcs have difficulty entering the arc-extinguishing grid for extinguishing.

[0021] Optionally, the arc-extinguishing device further includes a second arc-initiating plate, which is located on the other side of the arc-extinguishing grid in the first direction. The second arc-initiating plate includes a second substrate and a second pin, the second pin being connected to the second substrate, and the second substrate being connected to the first side plate and / or the second side plate.

[0022] The second pin has a second included angle with the second substrate, a portion of the second pin is inclined away from the arc-extinguishing grid, and a portion of the second pin is located between the first gas-generating block and the second gas-generating block.

[0023] In this way, when an electric arc is generated, the second pin can guide the arc, allowing more arcs to enter the gap of the arc-extinguishing grid more quickly, reducing the possibility that some arcs will have difficulty entering the arc-extinguishing grid for extinguishing.

[0024] Optionally, in the first direction, multiple arc-extinguishing grids are located on the side of the third gas-generating block facing the first gas-generating block, and the side of the third gas-generating block away from the arc-extinguishing grids is provided with a mounting groove, and the magnetic component is disposed in the mounting groove.

[0025] In this way, when an electric arc is generated, the third gas-generating block can protect the magnetic components, reducing the possibility that the heat from the electric arc burning the magnetic components directly or that the heat from the electric arc burning the arc-extinguishing grid is transferred to the magnetic components, thus making the operation of the arc-extinguishing device more reliable.

[0026] Secondly, this application provides a switching device including any of the arc-extinguishing devices described in the first aspect above.

[0027] The advantages of the switching devices provided in the second aspect and the various possible designs of the second aspect can be found in the first aspect and the various possible implementations of the first aspect, and will not be repeated here. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of an arc-extinguishing device according to an embodiment of this application.

[0029] Figure 2 This is a schematic diagram of a gas-generating structure according to an embodiment of this application.

[0030] Figure 3 This is an exploded view of an arc-extinguishing device according to an embodiment of this application.

[0031] Figure 4 This is a side view of an arc-extinguishing device according to an embodiment of this application.

[0032] Figure 5 This is a schematic diagram of an arc-extinguishing device according to an embodiment of this application, after concealing the first side plate and the gas-generating structure.

[0033] Figure 6 This is a schematic diagram of a first arc-drawing plate according to an embodiment of this application.

[0034] Figure 7 This is a schematic diagram of a second arc-drawing plate according to an embodiment of this application.

[0035] Explanation of reference numerals in the attached figures:

[0036] 100: Arc extinguishing device; 10: First side plate; 11: First snap-fit ​​structure; 111: Snap-fit ​​groove; 12: First fixing groove; 20: Second side plate; 21: Third snap-fit ​​structure; 211: Snap-fit ​​groove; 22: Second fixing groove; 30: Gas generating structure; 31: First gas generating block; 311: Second snap-fit ​​structure; 312: Snap-fit ​​platform; 32: Second gas generating block; 321: Fourth snap-fit ​​structure; 322: Snap-fit ​​post; 33: Third gas generating block; 331: Mounting groove; 34: Reinforcing rib; 40: Magnetic component; 50: Arc extinguishing grid plate; 60: First arc ignition plate; 61: First substrate; 62: First pin; 70: Second arc ignition plate; 71: Second substrate; 72: Second pin; X: First direction; Y: Second direction. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0039] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0040] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist simultaneously, or B exists. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0041] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0042] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0043] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0044] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, "connection" or "linkage" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by a partition, such as a connection fixed by screws, bolts, or other partitions; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In circuit structures, "connection" or "linkage" can refer not only to a physical connection but also to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate element, as long as the circuit is connected; it can also refer to the internal connection of two elements. A signal connection can refer not only to a signal connection through a circuit but also to a signal connection through a medium, such as radio waves. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0046] In switching devices, arc-extinguishing mechanisms typically include a left gas-generating block, a right gas-generating block, two side plates, and multiple grid plates. The grid plates are arranged parallel to each other between the two side plates, with each end of the grid plate connected to one of the side plates. The left and right gas-generating blocks are located between the two side plates, with the left block connected to one side plate and the right block connected to the other. In this way, the grid plates and gas-generating blocks work together to extinguish the electric arc. After the arc enters the arc-extinguishing device, the grid plates cut the arc, and the gas-generating blocks produce gas, which elongates and cools the arc, thereby accelerating its extinction.

[0047] In this setup, the left and right gas-generating blocks need to be installed and fixed separately, making the installation of the arc-extinguishing device more complex and involving more steps. Furthermore, this setup results in insufficient gas production from the gas-generating blocks, leading to a poor arc-extinguishing effect from the arc-extinguishing device.

[0048] Based on this, the present application provides an arc extinguishing device 100 and a switching device, which can simplify the assembly process of the arc extinguishing device 100 and improve the arc extinguishing effect of the arc extinguishing device 100.

[0049] For example, embodiments of this application provide a switching device, which includes, as shown in the example, a switching device. Figure 1 The arc-extinguishing device 100 shown.

[0050] In the switching device equipped with the aforementioned arc-extinguishing device 100, the switching device can extinguish the electric arc through the arc-extinguishing device 100, resulting in a better arc-extinguishing effect. Furthermore... Figure 1 The installation of each component in the arc extinguishing device 100 shown is also relatively convenient, which can simplify the assembly process of the arc extinguishing device 100 and its installation process in the switching device.

[0051] It should be noted that, in this application, the switching device may specifically be a circuit breaker, contactor, or load switch, etc. The specific type of switching device is not specifically limited in the embodiments of this application.

[0052] The arc-extinguishing device 100 provided in the embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0053] Reference Figure 1 and Figure 2 As shown, this application provides an arc-extinguishing device 100, including a first side plate 10, a second side plate 20, a first gas-generating block 31, a second gas-generating block 32, and a third gas-generating block 33. The first side plate 10 and the second side plate 20 are disposed opposite to each other, and an installation space is formed between them. The first gas-generating block 31 and the second gas-generating block 32 are disposed opposite to each other, and both are located within the installation space. The third gas-generating block 33 is located between the first gas-generating block 31 and the second gas-generating block 32, and the first gas-generating block 31, the second gas-generating block 32, and the third gas-generating block 33 are integrally formed, with a magnetic component 40 mounted on the third gas-generating block 33. The first gas-generating block 31 is mounted on the first side plate 10, and / or the second gas-generating block 32 is mounted on the second side plate 20.

[0054] In this embodiment, the first gas-generating block 31, the second gas-generating block 32, and the third gas-generating block 33 are integrally formed. Therefore, the first gas-generating block 31, the second gas-generating block 32, and the third gas-generating block 33 can be integrated into a single unit and manufactured in one step. Thus, when assembling the arc-extinguishing device 100, the first gas-generating block 31, the second gas-generating block 32, and the third gas-generating block 33 can be installed as a single unit, avoiding the need for separate installation of these multiple parts. This reduces the number of installation steps in the assembly process of the arc-extinguishing device 100 and simplifies the assembly process.

[0055] Specifically, the first side plate 10 and the second side plate 20 can serve as mounting carriers for other components in the arc-extinguishing device 100. The first gas-generating block 31, the second gas-generating block 32, and the third gas-generating block 33 can be installed in the installation space. When assembling the arc-extinguishing device 100, the first gas-generating block 31 can be connected to the first side plate 10, and / or the second gas-generating block 32 can be connected to the second side plate 20. This allows for the installation of the first gas-generating block 31, the second gas-generating block 32, and the third gas-generating block 33, simplifying the assembly process of the arc-extinguishing device 100.

[0056] Furthermore, the arc-extinguishing device 100 proposed in this application is applied to switching devices and can extinguish the electric arc generated during the operation of the switching devices. In the arc-extinguishing device 100, the first gas-generating block 31, the second gas-generating block 32, and the third gas-generating block 33 can generate gas based on the action of the electric arc. The gas can elongate and cool the electric arc, while increasing the resistance of the electric arc to accelerate its extinguishing. At the same time, the third gas-generating block 33 is also provided with a magnetic element 40, which can also drive the movement of the electric arc, facilitating the elongation of the electric arc, thereby further accelerating its extinguishing.

[0057] In this application, the first gas-generating block 31, the second gas-generating block 32, and the third gas-generating block 33 can all generate gas to accelerate the extinction of the electric arc. In this configuration, the third gas-generating block 33 can fully utilize the space between the first gas-generating block 31 and the second gas-generating block 32, increasing the portion of the arc-extinguishing device 100 available for gas generation. This allows for a larger gas generation capacity of the arc-extinguishing device 100, thereby improving the arc-extinguishing effect.

[0058] In summary, in the arc-extinguishing device 100 proposed in this application, the first gas-generating block 31, the second gas-generating block 32, and the third gas-generating block 33 can be installed as a single unit, simplifying the assembly of the arc-extinguishing device 100. Furthermore, all three gas-generating blocks 31, 32, and 33 can generate gas under the action of the electric arc, increasing the gas production of the arc-extinguishing device 100 during operation. Additionally, the magnetic component 40 in the arc-extinguishing device 100 also drives the electric arc, contributing to its elongation and thus improving the arc-extinguishing effect.

[0059] For ease of description, the whole formed by the first gas-producing block 31, the second gas-producing block 32 and the third gas-producing block 33 will be referred to as the gas-producing structure 30 in the following description.

[0060] In related technologies, arc-extinguishing devices only include two gas-generating components: a left gas-generating block and a right gas-generating block. This limits the amount of gas produced, restricting its extinguishing effect on the electric arc, as only the left and right gas-generating blocks can produce gas. Furthermore, some space between the left and right gas-generating blocks is wasted.

[0061] As can be seen, compared with related technologies, the gas-generating structure 30 in this application enables the arc-extinguishing device 100 to have a larger gas-generating portion. When the arc-extinguishing device 100 extinguishes the electric arc, the arc-extinguishing device 100 generates gas through the first gas-generating block 31, the second gas-generating block 32, and the third gas-generating block 33, resulting in a larger gas generation capacity of the gas-generating structure 30. This can effectively improve the arc-extinguishing effect of the arc-extinguishing device 100.

[0062] It should be noted that, as a preferred embodiment, when installing the gas generating structure 30, the first gas generating block 31 can be connected to the first side plate 10, and the second gas generating block 32 can be connected to the second side plate 20. In this way, both sides of the gas generating structure 30 can be connected to the first side plate 10 and the second side plate 20 respectively, so that the gas generating structure 30 has a better installation effect in the arc extinguishing device 100.

[0063] Of course, it is also possible to connect only the first gas-generating block 31 to the first side plate 10, or only the second gas-generating block 32 to the second side plate 20. In this way, the installation of the gas-generating structure 30 can also be completed.

[0064] It should also be noted that, in the embodiments of this application, the gas-generating structure 30 is made of a material that can decompose into gas, such as polyamide (PA), polyformaldehyde (POM), or polymethyl methacrylate (PMMA), etc. The gas-generating structure 30 made of these materials can generate a large amount of gas under the action of the electric arc, so as to elongate and cool the electric arc and improve the extinguishing effect of the electric arc.

[0065] Of course, the materials used to make the gas-generating structure 30 are not limited to the materials mentioned above. This application does not specifically limit the specific material composition of the gas-generating material, as long as it can release gas based on the action of the electric arc to accelerate the extinction of the electric arc.

[0066] Among them, such as Figure 2 As shown, reinforcing ribs 34 can also be provided on the first gas-generating block 31 and the second gas-generating block 32 to improve the strength of the first gas-generating block 31 and the second gas-generating block 32 and reduce the possibility of damage to the gas-generating structure 30 during installation.

[0067] In the embodiments of this application, such as Figure 1 and Figure 3 As shown, when the first gas-generating block 31 is installed on the first side plate 10, the first gas-generating block 31 and the first side plate 10 can be connected by a snap-fit ​​mechanism. Specifically, the first side plate 10 is provided with a first snap-fit ​​structure 11, and the first gas-generating block 31 is provided with a second snap-fit ​​structure 311. The first snap-fit ​​structure 11 can snap into the second snap-fit ​​structure 311, thus realizing the connection between the first gas-generating block 31 and the first side plate 10, thereby enabling the installation of the gas-generating structure 30.

[0068] The first snap-fit ​​structure 11 can be either the snap-fit ​​platform 312 or the snap-fit ​​groove 111, and the second snap-fit ​​structure 311 can be either the snap-fit ​​platform 312 or the snap-fit ​​groove 111. In this way, when the first gas-generating block 31 is snapped into the first side plate 10, the snap-fit ​​platform 312 can be embedded in the snap-fit ​​groove 111.

[0069] That is, the latching platform 312 and the latching slot 111 are two structures that can cooperate to achieve latching. In this embodiment, the first latching structure 11 can be the latching platform 312, and the corresponding second latching structure 311 can be the latching slot 111. Alternatively, the first latching structure 11 can be the latching slot 111, and the corresponding second latching structure 311 can be the latching platform 312, such as... Figure 2 and Figure 3 As shown. Thus, when the gas-generating structure 30 is installed on the first side plate 10, the snap-fit ​​platform 312 can be embedded in the snap-fit ​​groove 111 to realize the installation of the first gas-generating block 31.

[0070] Here, a detailed explanation will be given using the case where the first snap-fit ​​structure 11 is a snap-fit ​​slot 111 and the second snap-fit ​​structure 311 is a snap-fit ​​platform 312 as an example. Figure 3 As shown, in order to facilitate the insertion of the locking platform 312 into the locking groove 111, the locking groove 111 may have an opening, through which the locking platform 312 can enter the locking groove 111 and engage with the locking groove 111.

[0071] Alternatively, the snap-fit ​​groove 111 can be located inside the first side plate 10 and has no opening. In this case, when installing the gas generating structure 30, force can be applied to the gas generating structure 30 to cause the first gas generating block 31 to undergo a large deformation, so that the snap-fit ​​platform 312 can be embedded in the snap-fit ​​groove 111.

[0072] For cases where the first snap-fit ​​structure 11 is a snap-fit ​​platform 312 and the second snap-fit ​​structure 311 is a snap-fit ​​groove 111, please refer to the above description. The embodiments of this application will not be repeated here.

[0073] In this application, there can be multiple first snap-fit ​​structures 11 and multiple second snap-fit ​​structures 311, and multiple first snap-fit ​​structures 11 can be embedded in the second snap-fit ​​structure 311 in a one-to-one correspondence.

[0074] In this way, when the first gas-generating block 31 is engaged with the first side plate 10, multiple first engaging structures 11 can engage with multiple second engaging structures 311. This results in more engagement points between the first gas-generating block 31 and the first side plate 10, making the engagement between the first gas-generating block 31 and the first side plate 10 more stable and the installation between the gas-generating structure 30 and the first side plate 10 more reliable.

[0075] It should be noted that the number of the first snap-fit ​​structure 11 and the second snap-fit ​​structure 311 can both be 2, 3, or 4, etc. The specific number of the first snap-fit ​​structure 11 and the second snap-fit ​​structure 311 is not specifically limited in this embodiment. Of course, the number of the first snap-fit ​​structure 11 and the second snap-fit ​​structure 311 can also both be 1.

[0076] It should also be noted that, in the foregoing description, the first gas-generating block 31 is installed on the first side plate 10 by a snap-fit ​​connection. Besides this method, the first gas-generating block 31 can also be installed on the first side plate 10 in other ways, such as by directly fixing it to the first side plate 10 with threads or riveting. The specific installation method of the first gas-generating block 31 and the first side plate 10 is not specifically limited in this embodiment.

[0077] In the embodiments of this application, such as Figure 1 and Figure 3As shown, when the second gas-generating block 32 is installed on the second side plate 20, the second gas-generating block 32 and the first side plate 10 can also be connected by a snap-fit ​​mechanism. Specifically, the second side plate 20 is provided with a third snap-fit ​​structure 21, and the second gas-generating block 32 is provided with a fourth snap-fit ​​structure 321. The third snap-fit ​​structure 21 can snap-fit ​​with the fourth snap-fit ​​structure 321, thus realizing the connection between the second gas-generating block 32 and the second side plate 20, thereby enabling the installation of the gas-generating structure 30.

[0078] The third snap-fit ​​structure 21 is one of the snap-fit ​​post 322 and the snap-fit ​​groove 211, and the fourth snap-fit ​​structure 321 is the other of the snap-fit ​​post 322 and the snap-fit ​​groove 211. The snap-fit ​​post 322 can be embedded in the snap-fit ​​groove 211. In this way, when the second gas generating block 32 and the second side plate 20 are snapped together, the snap-fit ​​post 322 can be embedded in the snap-fit ​​groove 211.

[0079] Similar to the snap-fit ​​slot 111, the snap-fit ​​slot 211 may or may not have an opening. Snap-fit ​​slots 211 with different configurations can all enable the installation of the second gas-generating block 32 and the second side plate 20.

[0080] Similar to the installation of the first gas-generating block 31 and the first side plate 10, the number of the third snap-fit ​​structure 21 and the fourth snap-fit ​​structure 321 can also be multiple, so that the second gas-generating block 32 and the second side plate 20 can be snapped together at multiple positions, thereby improving the reliability of the installation between the second gas-generating block 32 and the second side plate 20.

[0081] Furthermore, the specific installation method between the second gas-generating block 32 and the second side plate 20 is not limited to the aforementioned snap-fit ​​connection; it can also be achieved through threaded connection or riveting. For details, please refer to the aforementioned description of the installation of the first gas-generating block 31 and the first side plate 10; the embodiments of this application will not be repeated here.

[0082] In the embodiments of this application, such as Figure 3 and Figure 4 As shown, the arc-extinguishing device 100 also includes an arc-extinguishing grid 50. When the arc-extinguishing device 100 needs to extinguish the arc, the arc-extinguishing grid 50 can cut the arc into multiple short arcs to increase the arc resistance and limit the arc current. In the arc-extinguishing device 100, the arc-extinguishing grid 50 can cooperate with the gas-generating structure 30 to extinguish the arc.

[0083] The system comprises multiple arc-extinguishing grid plates 50, all located between the first side plate 10 and the second side plate 20 and distributed along the first direction X. The arc-extinguishing grid plates 50 and the first gas-generating block 31 are distributed along the second direction Y within the installation space. That is, the arc-extinguishing grid plates 50 and the gas-generating structure 30 are distributed along the second direction Y. Thus, after an electric arc occurs, it first acts on the gas-generating structure 30, causing it to generate a large amount of gas. Besides cooling the electric arc, the gas can also form an airflow that guides the arc into the arc-extinguishing grid plates 50, where it is cut by the grid plates.

[0084] In this application, the arc-extinguishing grid plate 50 can also be installed via the first side plate 10 and the second side plate 20. Specifically, the first side plate 10 is provided with a first fixing groove 12, and the second side plate 20 is provided with a second fixing groove 22. The side of the arc-extinguishing grid plate 50 facing the first side plate 10 can be embedded in the first fixing groove 12 and connected to the groove wall of the first fixing groove 12. The side of the arc-extinguishing grid plate 50 facing the second side plate 20 can be embedded in the second fixing groove 22 and connected to the groove wall of the second fixing groove 22, such as... Figure 3 As shown.

[0085] In this way, in the distribution direction of the first side plate 10 and the second side plate 20, the opposite ends of the arc-extinguishing grid plate 50 can be connected to the first side plate 10 and the second side plate 20 respectively, which makes the installation of the arc-extinguishing grid plate 50 in the arc-extinguishing device 100 more reliable.

[0086] Specifically, the arc-extinguishing grid 50 and the first side plate 10 can be connected by riveting, or by welding, threaded connection, or other methods. This embodiment does not specifically limit the connection in this application. Similarly, the arc-extinguishing grid 50 and the second side plate 20 can also be connected in different ways.

[0087] It is understood that the arc-extinguishing grid plate 50 may be connected only to the first side plate 10, or the arc-extinguishing grid plate 50 may be connected only to the second side plate 20, etc. The specific installation method of the arc-extinguishing grid plate 50 in the arc-extinguishing device 100 is not specifically limited in this embodiment.

[0088] It should be noted that the first direction X intersects with the second direction Y, and the plane formed by the first direction X and the second direction Y can be parallel to the plane where the first side plate 10 is located. The first direction X and the second direction Y can have an angle between them, specifically 78°, 85°, 90°, 93°, or 99°, etc. This application does not specifically limit the size of the angle between the first direction X and the second direction Y in this embodiment.

[0089] In some embodiments, such as Figure 1 , Figure 4 and Figure 5As shown, the arc-extinguishing device 100 may further include a first arc-initiating plate 60, which is located on one side of the arc-extinguishing grid plate 50 in the first direction X. The first arc-initiating plate 60 includes a first substrate 61 and a first pin 62, the first pin 62 being connected to the first substrate 61, and the first substrate 61 being connected to the first side plate 10 and / or the second side plate 20. The first pin 62 has a first included angle with the first substrate 61, a portion of the first pin 62 is located between the first gas-generating block 31 and the second gas-generating block 32, and the first pin 62 is opposite to the third gas-generating block 33.

[0090] Thus, the first arc-starting plate 60 can partially extend between the first gas-generating block 31 and the second gas-generating block 32, and the first arc-starting plate 60 can limit the gas-generating structure 30 in the second direction Y. If there is a failure in the installation of the gas-generating structure 30, the gas-generating structure 30 is very likely to shake or shift in the installation space. At this time, the first arc-starting plate 60 can limit the gas-generating structure 30 through the first pin 62, reducing the possibility of the gas-generating structure 30 detaching from the arc-extinguishing device 100.

[0091] Here, the arc-extinguishing device 100 is used as an example. Figure 4 The following explanation uses the orientation shown as an example. The left and right directions in the diagram represent the second direction, Y. The arc-extinguishing grid 50 is located on the right, and the gas-generating structure 30 is located on the left.

[0092] If there is a failure in the installation of the gas-generating structure 30, especially if the locking groove 111 or locking groove 211 is an open groove, the gas-generating structure 30 may move to the left and disengage from the installation space. In this case, if the gas-generating structure 30 has a leftward displacement, it can abut against the first pin 62, which can restrict the movement of the gas-generating structure 30 and reduce the possibility of it disengaging.

[0093] like Figure 6 As shown, the first included angle between the first pin 62 and the first substrate 61 corresponds to α in the figure. The setting of the first included angle α allows the first pin 62 to extend between the first gas generating block 31 and the second gas generating block 32, and when the gas generating structure 30 shakes or shifts, the first pin 62 can limit the third gas generating block 33. The first substrate 61 can be parallel to the arc extinguishing grid 50 and cooperate with the arc extinguishing grid 50 to cool and cut the electric arc, reducing the possibility of airflow turbulence caused by the tilt of the first substrate 61 relative to the arc extinguishing grid 50.

[0094] The first included angle α can be 55°, 51°, 48°, 45° or 40°, etc. The specific angle value of the first included angle α is not specifically limited in this embodiment of the application. It can be specifically set according to the positional relationship between the first arc-inducing plate 60 and the third gas-generating block 33, the position of the moving contact and the stationary contact, etc.

[0095] In some embodiments, such as Figure 5 and Figure 6 As shown, the first pin 62 can be tilted away from the arc-extinguishing grid 50.

[0096] Thus, the side of the first pin 62 facing away from the first substrate 61 is relatively far from the arc-extinguishing grid 50. In this way, when an arc is generated, the first pin 62 can guide the arc, so that more arcs can enter the gap of the arc-extinguishing grid 50 more quickly, reducing the possibility that the arc located on the side of the arc-extinguishing grid 50 in the first direction X is difficult to enter the arc-extinguishing grid 50 for extinguishing.

[0097] In some embodiments, such as Figure 1 , Figure 5 and Figure 7 As shown, the arc-extinguishing device 100 may further include a second arc-initiating plate 70, which is located on the other side of the arc-extinguishing grid plate 50 in the first direction X. The second arc-initiating plate 70 includes a second substrate 71 and a second pin 72, the second pin 72 being connected to the second substrate 71, and the second substrate 71 being connected to the first side plate 10 and / or the second side plate 20. The second pin 72 has a second included angle with the second substrate 71, the second pin 72 is inclined away from the arc-extinguishing grid plate 50, and a portion of the second pin 72 is located between the first gas-generating block 31 and the second gas-generating block 32.

[0098] Thus, on the other side of the arc-extinguishing grid plate 50 in the first direction X, a second arc-inducing plate 70 is also provided. The second arc-inducing plate 70 can also guide the arc, so that more arcs can enter the gap of the arc-extinguishing grid plate 50 more quickly, reducing the possibility that the arc located on the other side of the arc-extinguishing grid plate 50 in the first direction X will have difficulty entering the arc-extinguishing grid plate 50 for extinguishing.

[0099] Specifically, the second arc-initiating plate 70 includes a second substrate 71 and a second pin 72, with the second pin 72 inclined away from the arc-extinguishing grid plate 50. The second arc-initiating plate 70 can guide the electric arc through the second pin 72, allowing the arc to enter the mounting space and be cut by the arc-extinguishing grid plate 50.

[0100] like Figure 7 As shown, the second included angle between the second pin 72 and the second substrate 71 corresponds to β in the figure. The second included angle β can be 145°, 141°, 138°, 135° or 130°, etc. The specific angle value of the second included angle β is not specifically limited in this embodiment of the application, and can be specifically set according to the positional relationship of the second arc-inducing plate 70, the moving contact and the stationary contact.

[0101] To make the structure and principle of this embodiment clearer, a detailed description is provided below in conjunction with the assembly process of the arc-extinguishing device 100. In the following description, an example is given where the gas-generating structure 30 is mounted on both sides of the first side plate 10 and the second side plate 20, and the arc-extinguishing grid plate 50 is mounted on both sides of the first side plate 10 and the second side plate 20, respectively. For cases where either the gas-generating structure 30 or the arc-extinguishing grid plate 50 is mounted on one of the first side plate 10 or the second side plate 20, please refer to the following description; further details will not be repeated in this embodiment.

[0102] First, the first arc-initiating plate 60, the second arc-initiating plate 70, and multiple arc-extinguishing grid plates 50 can be installed between the first side plate 10 and the second side plate 20, ensuring that the first arc-initiating plate 60, the second arc-initiating plate 70, and the arc-extinguishing grid plates 50 are all connected to the first side plate 10 and the second side plate 20. Then, the gas-generating structure 30 can be installed between the first side plate 10 and the second side plate 20, completing the assembly of the arc-extinguishing device 100.

[0103] As described above regarding the materials of the gas-generating structure 30, it is made of a plastic material with a certain degree of toughness. During installation, force can be applied to the first gas-generating block 31 and the second gas-generating block 32 to deform the structure, allowing them to approach each other. Then, the structure can be pushed into the installation space so that the first locking structure 11 engages with the second locking structure 311, and the third locking structure 21 engages with the fourth locking structure 321.

[0104] When there are multiple first locking structures 11 and second locking structures 311, force can be applied to the position of one of the first locking structures 11 first. After the first locking structure 11 and its corresponding second locking structure 311 are engaged, force can then be applied to the positions of the remaining first locking structures 11 to ensure that the remaining first locking structures 11 are also properly engaged. The same method can be used when there are multiple third locking structures 21 and fourth locking structures 321.

[0105] It should be noted that, in order to facilitate the installation of the gas generating structure 30, the number of the first snap-fit ​​structure 11 and the number of the third snap-fit ​​structure 21 can be the same, and the multiple first snap-fit ​​structures 11 are one-to-one with the multiple third snap-fit ​​structures 21.

[0106] In some embodiments, such as Figure 1 , Figure 2 and Figure 4As shown, in the first direction X, multiple arc-extinguishing grid plates 50 are located on the side of the third gas-generating block 33 facing the first gas-generating block 31. The side of the third gas-generating block 33 away from the arc-extinguishing grid plates 50 can be provided with a mounting groove 331, in which the magnetic component 40 is disposed. Thus, the mounting groove 331 can position the magnetic component 40, giving it a defined position within the arc-extinguishing device 100.

[0107] Thus, multiple arc-extinguishing grid plates 50 are located on the same side of the third gas-generating block 33 in the first direction X. When an electric arc is generated, the arc is located on the side of the third gas-generating block 33 facing the arc-extinguishing grid plates 50. The magnetic element 40 is disposed in the mounting groove 331, so that the magnetic element 40 is located on the side away from the electric arc. In this way, when an electric arc is generated, the gas-generating structure 30 can protect the magnetic element 40, reducing the possibility that the electric arc directly burns the magnetic element 40, or that more of the heat from the electric arc burning the arc-extinguishing grid plates 50 is transferred to the magnetic element 40, causing the magnetic element 40 to demagnetize, thereby making the operation of the arc-extinguishing device 100 more reliable.

[0108] Furthermore, in the above-described arrangement of this application, the arc-extinguishing grid 50 and the magnetic component 40 are located on opposite sides of the mounting groove 331. Generally, the arc-extinguishing grid 50 is usually made of metal, therefore, the arc-extinguishing grid 50 also has a certain magnetic attraction to the magnetic component 40. This can also reduce the possibility of the magnetic component 40 detaching from the mounting groove 331.

[0109] In the arc-extinguishing device 100 proposed in this application, the first gas-generating block 31, the second gas-generating block 32, and the third gas-generating block 33 can be installed as a single unit, simplifying the assembly of the arc-extinguishing device 100. Furthermore, all three gas-generating blocks 31, 32, and 33 can generate gas under the influence of the electric arc, increasing the gas production of the arc-extinguishing device 100 during operation. Additionally, the magnetic component 40 in the arc-extinguishing device 100 also drives the electric arc, contributing to its elongation and thus improving the arc-extinguishing effect.

[0110] Finally, it should be noted that the above embodiments are merely specific implementations of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An arc-extinguishing device, characterized in that, include: A first side plate and a second side plate are arranged opposite to each other, and an installation space is formed between the first side plate and the second side plate; The first gas-generating block and the second gas-generating block are arranged opposite to each other, and both the first gas-generating block and the second gas-generating block are located in the installation space; The third gas-generating block is located between the first gas-generating block and the second gas-generating block, and the first gas-generating block, the second gas-generating block and the third gas-generating block are integrally formed, and magnetic components are installed on the third gas-generating block; Wherein, the first gas-generating block is installed on the first side plate, and / or the second gas-generating block is installed on the second side plate.

2. The arc-extinguishing device according to claim 1, characterized in that, When the first gas-generating block is installed on the first side plate, a first snap-fit ​​structure is provided on the first side plate, and a second snap-fit ​​structure is provided on the first gas-generating block. The first snap-fit ​​structure is one of a snap-fit ​​platform and a snap-fit ​​groove, and the second snap-fit ​​structure is the other of a snap-fit ​​platform and a snap-fit ​​groove, wherein the snap-fit ​​platform is embedded in the snap-fit ​​groove.

3. The arc-extinguishing device according to claim 2, characterized in that, There are multiple first snap-fit ​​structures and multiple second snap-fit ​​structures, with each of the multiple first snap-fit ​​structures being embedded in a corresponding second snap-fit ​​structure.

4. The arc-extinguishing device according to claim 1, characterized in that, When the second gas-generating block is installed on the second side plate, a third snap-fit ​​structure is provided on the second side plate, and a fourth snap-fit ​​structure is provided on the second gas-generating block. The third snap-fit ​​structure is one of a snap-fit ​​post and a snap-fit ​​slot, and the fourth snap-fit ​​structure is the other of a snap-fit ​​post and a snap-fit ​​slot, with the snap-fit ​​post embedded in the snap-fit ​​slot.

5. The arc-extinguishing device according to claim 1, characterized in that, The arc-extinguishing device has an intersecting first direction and a second direction. A plurality of arc-extinguishing grids distributed along the first direction are also provided between the first side plate and the second side plate. The arc-extinguishing grids and the first gas-generating block are distributed along the second direction in the installation space. A first fixing groove is provided on the first side plate, and the arc extinguishing grid plate is embedded in the first fixing groove on the side facing the first side plate and is connected to the groove wall of the first fixing groove. And / or, a second fixing groove is provided on the second side plate, and the arc-extinguishing grid plate is embedded in the second fixing groove on the side facing the second side plate and is connected to the groove wall of the second fixing groove.

6. The arc-extinguishing device according to claim 5, characterized in that, The arc-extinguishing device further includes a first arc-inducing plate, which is located on one side of the arc-extinguishing grid plate in the first direction; The first arc-starting plate includes a first substrate and a first pin, the first pin being connected to the first substrate, and the first substrate being connected to the first side plate and / or the second side plate; Wherein, the first pin has a first included angle with the first substrate, part of the first pin is located between the first gas generating block and the second gas generating block, and the first pin is opposite to the third gas generating block.

7. The arc-extinguishing device according to claim 6, characterized in that, The first pin is tilted away from the arc-extinguishing grid.

8. The arc-extinguishing device according to claim 5, characterized in that, The arc-extinguishing device further includes a second arc-inducing plate, which is located on the other side of the arc-extinguishing grid plate in the first direction; The second arc-starting plate includes a second substrate and a second pin, the second pin being connected to the second substrate, and the second substrate being connected to the first side plate and / or the second side plate; The second pin has a second included angle with the second substrate, the second pin is inclined in a direction away from the arc-extinguishing grid, and a portion of the second pin is located between the first gas-generating block and the second gas-generating block.

9. The arc-extinguishing device according to claim 5, characterized in that, In the first direction, the plurality of arc-extinguishing grid plates are located on the side of the third gas-generating block facing the first gas-generating block, and the third gas-generating block is provided with a mounting groove on the side away from the arc-extinguishing grid plates, and the magnetic component is disposed in the mounting groove.

10. A switching device, characterized in that, The switching device includes the arc-extinguishing device according to any one of claims 1-9.

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