Enhanced contact assemblies and switching devices

Abstract

This application discloses an enhanced contact assembly and a switching device. The enhanced contact assembly includes a current-carrying contact assembly comprising multiple stacked current-carrying contact pieces; and an enhanced contact assembly, the extension length of which is greater than that of the current-carrying contact assembly. The enhanced contact assembly includes at least one adjacent and stacked arc-initiating contact piece and at least one enhanced contact piece. Each arc-initiating contact piece has an arc contact point, and the projection of the arc contact point in a plane perpendicular to the stacking direction is spaced apart from the projection of the current-carrying contact piece in the same plane. The extension length directions of the current-carrying contact assembly and the enhanced contact assembly are perpendicular to the stacking direction. The enhanced contact assembly and switching device of this application can improve the overall breaking performance, have high structural strength, and reduce overall cost.

Description

Technical Field

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

[0002] In traditional switching devices, the contact assembly typically includes a number of contact pieces of the same shape, each with a contact point on one side for opening or closing. This type of contact assembly is usually used in operating conditions with normal voltage or current levels. However, under high-voltage AC or DC operating conditions, the arc generated during interruption is not easily able to enter the arc-extinguishing chamber for arc extinguishing, resulting in poor interruption performance of the switching device.

[0003] To improve this situation, current switchgear uses a method of lengthening some contact pieces, so that the electric arc generated at the contact point of the extended contact piece can more easily enter the arc-extinguishing chamber, thereby improving the arc extinguishing and breaking effect. However, this contact assembly structure results in the extended contact piece being subjected to a larger destructive torque during opening and closing, making it prone to damage during the use of the switchgear and increasing maintenance and replacement costs. Utility Model Content

[0004] This application provides an enhanced contact assembly and switching device that can improve the overall breaking effect, have high structural strength, and reduce overall cost.

[0005] This application provides an enhanced contact assembly, comprising a current-carrying contact assembly including a plurality of stacked current-carrying contact pieces; and an enhanced contact assembly, the extension length of which is greater than the extension length of the current-carrying contact assembly. The enhanced contact assembly includes at least one adjacent and stacked arc-initiating contact piece and at least one enhanced contact piece, each arc-initiating contact piece having an arc contact point. The projection of the arc contact point in a plane perpendicular to the stacking direction is spaced apart from the projection of the current-carrying contact piece in a plane perpendicular to the stacking direction. The extension length directions of the current-carrying contact assembly and the enhanced contact assembly are perpendicular to the stacking direction.

[0006] In the above-mentioned enhanced contact assembly, the arc-inducing contact piece includes a contact body and a contact connector. The contact body and the contact connector are separately arranged and can be detachably connected to the enhanced contact piece. The contact body and the current-carrying contact piece are positioned opposite each other. The contact connector is located at one end of the contact body that protrudes from the current-carrying contact piece, and the arc contact is connected to the contact connector.

[0007] In the above-described reinforced contact assembly, the contact connector is a plate-like structure stacked with the reinforced contact sheet, and the contact connector has at least one through-hole for connection to the reinforced contact sheet.

[0008] In the enhanced contact assembly described above, the arc contact and the contact connector are integrally molded structures.

[0009] The enhanced contact assembly described above includes a contact body comprising a main body, a connecting part, and a fixing part connected in sequence. The two ends of the connecting part are bent and connected to the main body and the fixing part, respectively. The main body has a through hole for inserting a conductive connector and a second fixing hole for fixing the reinforced contact piece. The fixing part has a third fixing hole for fixing the reinforced contact piece.

[0010] The enhanced contact assembly described above also includes a connecting wire made of a soft conductive material, which is fixedly connected to the end of the main body away from the connecting part.

[0011] In the enhanced contact assembly described above, each current-carrying contact piece is provided with a current-carrying contact point, and each arc-starting contact piece also has a main contact point. The multiple current-carrying contacts and multiple main contacts are arranged sequentially along a straight line.

[0012] In the above-described reinforced contact assembly, the resistivity of the arc-initiating contact piece is lower than that of the reinforced contact piece.

[0013] In the above-described enhanced contact assembly, the enhanced contact piece is provided with an arc contact, and the arc contact of the enhanced contact piece is positioned opposite to the arc contact of the arc-inducing contact piece.

[0014] On the other hand, this application also provides a switching device, which includes the aforementioned enhanced contact assembly.

[0015] The enhanced contact assembly of this application includes a current-carrying contact assembly and an enhanced contact assembly. The current-carrying contact assembly includes a plurality of stacked current-carrying contact pieces. The enhanced contact assembly includes at least one adjacent and stacked arc-initiating contact piece and at least one enhanced contact piece. The extension length of the enhanced contact assembly is greater than the extension length of the current-carrying contact assembly. That is, the extension lengths of both the arc-initiating contact piece and the enhanced contact piece are greater than the extension lengths of the current-carrying contact piece. Therefore, the projection of the arc contact point on the arc-initiating contact piece can be spaced apart from the projection of the current-carrying contact piece, so that the arc contact point can protrude from the current-carrying contact assembly and be closer to the arc-extinguishing chamber of the switching device. The arc generated at the arc contact point is more likely to enter the arc-extinguishing chamber for arc extinguishing, thus improving the overall breaking effect.

[0016] The reinforced contact assembly has at least one arc-inducing contact piece and at least one reinforced contact piece arranged adjacently and stacked. The arc-inducing contact piece, as the main current-carrying component, can generate an electric arc at the arc contact point. The reinforced contact piece is located on one side of the arc-inducing contact piece and can support the arc-inducing contact piece when it is opening or closing, thereby improving the overall structural strength of the contact assembly, avoiding damage to the arc-inducing contact piece, and reducing maintenance and replacement costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the enhanced contact assembly according to an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the enhanced contact assembly according to an embodiment of the present application;

[0020] Figure 3 This is a schematic diagram of the other side of the enhanced contact assembly of the enhanced contact assembly according to an embodiment of this application.

[0021] Explanation of icon numbers:

[0022] 1. Current-carrying contact assembly; 11. Current-carrying contact piece; 1a. Current-carrying contact point;

[0023] 2. Reinforced contact assembly; 21. Arc-starting contact piece; 211. Contact body; 2111. Main body; 2111a. Through hole; 2111b. Second fixing hole; 2112. Connecting part; 2113. Fixing part; 2113a. Third fixing hole; 212. Contact connector; 212a. First fixing hole; 22. Reinforced contact piece; 23. Connecting wire;

[0024] 2a. Main contact; 2b. Arc contact. Detailed Implementation

[0025] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0026] like Figures 1 to 3 As shown, this application embodiment provides an enhanced contact assembly, which includes a current-carrying contact assembly 1, comprising a plurality of stacked current-carrying contact pieces 11; and an enhanced contact assembly 2, the extension length of which is greater than the extension length of the current-carrying contact assembly 1. The enhanced contact assembly 2 includes at least one adjacent and stacked arc-inducing contact piece 21 and at least one enhanced contact piece 22. Each arc-inducing contact piece 21 is provided with an arc contact 2b, and the projection of the arc contact 2b in a plane perpendicular to the stacking direction is spaced apart from the projection of the current-carrying contact piece 11 in a plane perpendicular to the stacking direction. The extension length directions of the current-carrying contact assembly 1 and the enhanced contact assembly 2 are perpendicular to the stacking direction.

[0027] In this embodiment, the enhanced contact assembly is applied in the switchgear and cooperates with the stationary contact assembly of the switchgear. The contact and disconnection between the two can realize the closing and opening operations of the switchgear. When the enhanced contact assembly and the stationary contact assembly are disconnected, an electric arc can be generated between them. The electric arc will enter the arc extinguishing chamber for arc extinguishing operation to avoid damage to the switchgear by the electric arc.

[0028] In specific implementation, the enhanced contact assembly of this application embodiment includes a current-carrying contact assembly 1 and an enhanced contact assembly 2. The current-carrying contact assembly 1 includes a plurality of stacked current-carrying contact pieces 11. The enhanced contact assembly 2 includes at least one adjacent and stacked arc-inducing contact piece 21 and at least one enhanced contact piece 22. The extension length of the enhanced contact assembly 2 is greater than the extension length of the current-carrying contact assembly 1. That is, the extension lengths of the arc-inducing contact piece 21 and the enhanced contact piece 22 are both greater than the extension lengths of the current-carrying contact piece 11. Therefore, the projection of the arc contact 2b on the arc-inducing contact piece 21 can be spaced apart from the projection of the current-carrying contact piece 11, so that the arc contact 2b can protrude from the current-carrying contact assembly 1 and be closer to the arc-extinguishing chamber of the switching device. The arc generated at the arc contact 2b is more likely to enter the arc-extinguishing chamber for arc extinguishing, thus improving the overall breaking effect.

[0029] The reinforced contact assembly 2 has at least one arc-inducing contact piece 21 and at least one reinforced contact piece 22 arranged adjacently and stacked. The arc-inducing contact piece 21 serves as the main current-carrying component and can generate an electric arc at the arc contact 2b. The reinforced contact piece 22 is located on one side of the arc-inducing contact piece 21 and can support the arc-inducing contact piece 21 when it is opening or closing, thereby improving the overall structural strength of the contact assembly, avoiding damage to the arc-inducing contact piece 21, and reducing the cost of maintenance and replacement.

[0030] Specifically, the reinforcing contact piece 22 has the same shape as the arc-starting contact piece 21, so that it can support the arc-starting contact piece 21 at all positions, thereby ensuring that the arc-starting contact piece 21 is not easily damaged at any position under impact force.

[0031] Specifically, the reinforced contact assembly 2 includes an arc-inducing contact piece 21 and a reinforced contact piece 22 arranged adjacently and stacked. Both are located in the middle of the stacked current-carrying contact pieces 11. The stacked current-carrying contact pieces 11 can support the arc-inducing contact piece 21 and the reinforced contact piece 22 on both sides, thereby ensuring the structural strength of the reinforced contact assembly 2. It should be noted that the number of arc-inducing contact pieces 21 and reinforced contact pieces 22 in this application is not limited to one, and their location is not limited to the middle of multiple current-carrying contact pieces 11.

[0032] like Figures 1 to 3 As shown in the embodiment of this application, the enhanced contact assembly has a current-carrying contact 1a on each current-carrying contact piece 11 and a main contact 2a on each arc-starting contact piece 21. The multiple current-carrying contacts 1a and the multiple main contacts 2a are arranged sequentially along a straight line.

[0033] In practice, the current-carrying contacts 1a on multiple current-carrying contact pieces 11 and the main contacts 2a on multiple arc-leading contact pieces 21 are arranged sequentially in a straight line. This arrangement facilitates the contact and separation of the current-carrying contacts 1a and the main contacts 2a with the main contacts of the stationary contact assembly of the switchgear, thereby ensuring the consistency of the opening and closing of the main contacts of the switchgear and ensuring the switching effect of the switchgear.

[0034] In this embodiment, both the current-carrying contact 1a and the main contact 2a are configured corresponding to the main contacts of the stationary contact assembly to achieve the opening and closing of the main contact portion of the switchgear; the arc contact 2b of the arc-initiating contact piece 21 is configured corresponding to the arc contact of the stationary contact assembly to achieve the opening and closing of the arc contact portion of the switchgear. When the switchgear is closed as a whole, the conduction of its arc contact portion precedes the conduction of its main contacts; when the switchgear is opened as a whole, the disconnection of its arc contact portion follows the disconnection of its main contacts, thereby allowing the arc to be generated at the arc contact 2b of the arc-initiating contact piece 21, making it easier for the arc to enter the arc-extinguishing chamber of the switchgear for arc extinguishing.

[0035] Specifically, the current-carrying contact 1a, the main contact 2a, and the arc contact 2b are located on the same side of the contact assembly, so that when the contact assembly rotates in one direction, the current-carrying contact 1a, the main contact 2a, and the arc contact 2b can all make contact with the stationary contact assembly, thereby ensuring the stability of the switching device's closing.

[0036] In the enhanced contact assembly of this application embodiment, the resistivity of the arc-inducing contact piece 21 is lower than that of the enhanced contact piece 22.

[0037] In practice, the resistivity of the arc-initiating contact piece 21 is lower than that of the reinforcing contact piece 22, giving the arc-initiating contact piece 21 stronger current-carrying capacity. The arc-initiating contact piece 21 can serve as the main current-carrying component, carrying the arc at the arc contact 2b and the current inside the arc-initiating contact piece 21 itself, ensuring the current-carrying effect of the arc contact part of the switchgear, and thus ensuring that the switchgear as a whole has good current-carrying and breaking performance.

[0038] Specifically, the reinforced contact piece 22 also has main contacts 2a and arc contacts 2b spaced apart along its extension direction, and the main contacts 2a and arc contacts 2b of the reinforced contact piece 22 are respectively positioned opposite to the main contacts 2a and arc contacts 2b of the arc-inducing contact piece 21, so as to facilitate contact and separation with the main contact portion and arc contact portion of the stationary contact assembly of the switchgear, thereby ensuring the consistency of the opening and closing of the switchgear.

[0039] Furthermore, the arrangement of the main contact 2a and the arc contact 2b of the reinforced contact piece 22 enables the reinforced contact piece 22 to have current guiding and switching functions, thereby achieving the effect of auxiliary current carrying.

[0040] In the enhanced contact assembly of this application embodiment, the arc-initiating contact piece 21 is made of copper and the enhanced contact piece 22 is made of iron.

[0041] In practice, the copper arc-starting contact piece 21 has better current-carrying performance and can be used as the main current-carrying component, while the iron reinforced contact piece 22 has higher structural strength, can support and strengthen the arc-starting contact piece 21, and also has the effect of auxiliary current carrying.

[0042] like Figures 1 to 3 As shown in the embodiment of this application, the enhanced contact assembly includes an arc-inducing contact piece 21 comprising a contact body 211 and a contact connector 212. The contact body 211 and the contact connector 212 are separately disposed and detachably connected to the enhanced contact piece 22. The contact body 211 is disposed opposite to the current-carrying contact piece 11. The contact connector 212 is disposed at one end of the contact body 211 that protrudes from the current-carrying contact piece 11. The arc contact 2b is connected to the contact connector 212.

[0043] In practical implementation, the contact body 211 and contact connector 212 of the arc-initiating contact piece 21 are separately configured and detachably connected to the reinforcing contact piece 22. This allows the contact body 211 and contact connector 212 to fit tightly against the reinforcing contact piece 22. The reinforcing contact piece 22 provides support and fixation for the contact body 211 and contact connector 212, improving the overall structural stability of the arc-initiating contact piece 21. Furthermore, the contact connector 212 is located at one end of the contact body 211 that protrudes from the current-carrying contact piece 11, and the arc contact 2b is connected to the contact connector 212. When the contact connector 212 and the arc contact 2b are damaged by long-term impact and arcing, the contact connector 212 can be directly disassembled without disassembling the entire arc-initiating contact piece 21. This detachable and separate configuration greatly improves the speed and convenience of maintenance.

[0044] In some alternative embodiments, the contact connector 212 is sleeved onto one end of the contact body 211 that protrudes from the current-carrying contact piece 11, further enhancing the installation stability of the contact connector 212 when installed on the contact body 211. Furthermore, the contact connector 212 and the contact body 211 can also be connected and engaged via a detachable connection method such as snap-fit.

[0045] like Figures 1 to 3 As shown in the embodiment of this application, the enhanced contact assembly has a plate-like structure in which the contact connector 212 is stacked with the enhanced contact piece 22, and the contact connector 212 has at least one through-hole 212a, through which the contact connector 212 is connected to the enhanced contact piece 22.

[0046] In practice, the plate-shaped contact connector 212 and the reinforcing contact piece 22 are stacked together, with sufficient contact area between them to ensure the fixing and supporting effect of the reinforcing contact piece 22 on the contact connector 212.

[0047] The contact connector 212 has at least one through-hole 212a. By installing a bolt or rivet structure in the first fixing hole 212a, the contact connector 212 can be tightly connected to the reinforcing contact piece 22, ensuring the connection strength between the two and achieving a stable fixing effect for the contact connector 212. Furthermore, the arrangement of the bolt or rivet structure cooperating with the first fixing hole 212a facilitates disassembly, thereby ensuring the ease of disassembly of the contact connector 212.

[0048] like Figure 2 As shown in the embodiment of this application, the enhanced contact assembly includes an arc contact 2b and a contact connector 212 that are integrally formed.

[0049] In practice, the arc contact 2b and the contact connector 212 are integrally formed to ensure the connection strength between them and prevent the arc contact 2b from falling off from the periphery of the contact connector 212. This ensures the breaking effect of the arc contact part of the switchgear and the stability of the switchgear's opening and closing.

[0050] like Figure 2 As shown in the embodiment of this application, the enhanced contact assembly includes a contact body 211 comprising a main body portion 2111, a connecting portion 2112, and a fixing portion 2113 connected in sequence. The two ends of the connecting portion 2112 are bent and connected to the main body portion 2111 and the fixing portion 2113, respectively. The main body portion 2111 has a through hole 2111a for inserting a conductive connector and a second fixing hole 2111b for fixing the reinforced contact piece 22. The fixing portion 2113 has a third fixing hole 2113a for fixing the reinforced contact piece 22.

[0051] In specific implementation, the main body 2111, connecting part 2112 and fixing part 2113 of the contact body 211 are bent and connected, so that the main contact 2a on the main body 2111 and the arc contact 2b on the contact connector 212 connected to the fixing part 2113 have sufficient room to move to contact the stationary contact assembly of the switching device, avoiding interference between their movement paths, which would affect the closing or opening action of the main contact 2a or the arc contact 2b.

[0052] Furthermore, a second fixing hole 2111b and a third fixing hole 2113a are respectively opened on the main body 2111 and the fixing part 2113 at both ends, which can fix both ends of the contact body 211, thereby achieving a stable fixing effect of the contact body 211 as a whole, enhancing the ability of the contact piece 22 to stably support and fix the contact body 211, and preventing damage to the contact body 211.

[0053] The main body 2111 also has a through hole 2111a for inserting a conductive connector. The conductive connector can be inserted sequentially into the current-carrying contact piece 11, the arc-starting contact piece 21, and the reinforcing contact piece 22, thereby realizing the mechanical connection and conductive connection between each contact piece, so that the contact assembly as a whole has structural stability and an overall conductive path.

[0054] like Figure 2 and Figure 3 As shown in the embodiment of this application, the enhanced contact assembly 2 further includes a connecting wire 23 made of a soft conductive material, which is fixedly connected to the end of the main body 2111 away from the connecting part 2112.

[0055] In specific implementation, the connecting wire 23 is used to connect the main body 2111 and the conductive busbar of the contact assembly, so as to realize the conductive connection between the current-carrying contact assembly 1, the reinforcing contact assembly 2 and the conductive busbar, thereby enabling the contact assembly to make conductive connection with external electrical components through the conductive busbar.

[0056] The connecting wire 23 is made of soft conductive material and is connected to the connecting body 2111 by welding. Since the arc-starting contact piece 21 is made of copper, it is easy to weld, which reduces the overall assembly difficulty and ensures the conductive connection between the connecting wire 23 and the arc-starting contact piece 21.

[0057] This application also provides a switching device, which includes the above-described enhanced contact assembly.

[0058] In specific implementation, the switching device of this application embodiment includes an enhanced contact assembly, which includes a current-carrying contact assembly 1 and an enhanced contact assembly 2. The current-carrying contact assembly 1 includes a plurality of stacked current-carrying contact pieces 11. The enhanced contact assembly 2 includes at least one adjacent and stacked arc-inducing contact piece 21 and at least one enhanced contact piece 22. The extension length of the enhanced contact assembly 2 is greater than the extension length of the current-carrying contact assembly 1. That is, the extension lengths of the arc-inducing contact piece 21 and the enhanced contact piece 22 are both greater than the extension lengths of the current-carrying contact piece 11. Therefore, the projection of the arc contact 2b on the arc-inducing contact piece 21 can be spaced apart from the projection of the current-carrying contact piece 11, so that the arc contact 2b can protrude from the current-carrying contact assembly 1 and be closer to the arc-extinguishing chamber of the switching device. The arc generated at the arc contact 2b is more likely to enter the arc-extinguishing chamber for arc extinguishing, thus improving the overall breaking effect.

[0059] The reinforced contact assembly 2 has at least one arc-inducing contact piece 21 and at least one reinforced contact piece 22 arranged adjacently and stacked. The arc-inducing contact piece 21 serves as the main current-carrying component and can generate an electric arc at the arc contact 2b. The reinforced contact piece 22 is located on one side of the arc-inducing contact piece 21 and can support the arc-inducing contact piece 21 when it is opening or closing, thereby improving the overall structural strength of the contact assembly, avoiding damage to the arc-inducing contact piece 21, and reducing the cost of maintenance and replacement.

[0060] In this embodiment, the switchgear further includes a stationary contact assembly and an arc-extinguishing chamber. The stationary contact assembly has a main contact and an arc contact. The current-carrying contact 1a and the main contact 2a are both corresponding to the main contacts of the stationary contact assembly to realize the opening of the main contact portion of the switchgear. The arc contact 2b of the arc-initiating contact piece 21 is corresponding to the arc contact of the stationary contact assembly to realize the opening of the arc contact portion of the switchgear. When the switchgear is closed as a whole, the conduction of its arc contact portion precedes the conduction of its main contacts. When the switchgear is opened as a whole, the disconnection of its arc contact portion follows the disconnection of its main contacts, so that the arc can be generated at the arc contact 2b of the arc-initiating contact piece 21, making it easier to enter the arc-extinguishing chamber of the switchgear for arc extinguishing.

[0061] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0062] The above description is merely a specific implementation of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. An enhanced contact assembly, characterized by, include: The current-carrying contact assembly (1) includes a plurality of stacked current-carrying contact pieces (11); The reinforcing contact assembly (2) has an extension length greater than that of the current-carrying contact assembly (1). The reinforcing contact assembly (2) includes at least one arc-inducing contact piece (21) and at least one reinforcing contact piece (22) that are adjacent and stacked. Each arc-inducing contact piece (21) is provided with an arc contact point (2b). The projection of the arc contact point (2b) in a plane perpendicular to the stacking direction is spaced apart from the projection of the current-carrying contact piece (11) in a plane perpendicular to the stacking direction. The extension length directions of the current-carrying contact assembly (1) and the reinforcing contact assembly (2) are perpendicular to the stacking direction.

2. The enhanced contact assembly of claim 1, wherein, The arc-inducing contact piece (21) includes a contact body (211) and a contact connector (212). The contact body (211) and the contact connector (212) are separately disposed and detachably connected to the reinforcing contact piece (22). The contact body (211) is disposed opposite to the current-carrying contact piece (11). The contact connector (212) is disposed at one end of the contact body (211) that protrudes from the current-carrying contact piece (11). The arc contact (2b) is connected to the contact connector (212).

3. The enhanced contact assembly of claim 2, wherein, The contact connector (212) is a plate-shaped structure stacked with the reinforcing contact piece (22), and the contact connector (212) has at least one through-hole (212a). The contact connector (212) is connected to the reinforcing contact piece (22) through its first fixing hole (212a).

4. The enhanced contact assembly of claim 2, wherein, The arc contact (2b) and the contact connector (212) are integrally formed structures.

5. The enhanced contact assembly of claim 2, wherein, The contact body (211) includes a main body (2111), a connecting part (2112), and a fixing part (2113) connected in sequence. The two ends of the connecting part (2112) are bent and connected to the main body (2111) and the fixing part (2113) respectively. The main body (2111) has a through hole (2111a) for inserting a conductive connector and a second fixing hole (2111b) for fixing and connecting with the reinforcing contact piece (22). The fixing part (2113) has a third fixing hole (2113a) for fixing and connecting with the reinforcing contact piece (22).

6. The enhanced contact assembly of claim 5, wherein, The enhanced contact assembly (2) further includes a connecting wire (23) made of a soft conductive material, which is fixedly connected to the end of the main body (2111) away from the connecting part (2112).

7. The enhanced contact assembly of claim 1, wherein, Each of the current-carrying contact pieces (11) is provided with a current-carrying contact (1a), and each of the arc-inducing contact pieces (21) is also provided with a main contact (2a). The plurality of current-carrying contacts (1a) and the plurality of main contacts (2a) are arranged sequentially along a straight line.

8. The enhanced contact assembly of claim 1, wherein, The resistivity of the arc-initiating contact piece (21) is lower than that of the reinforcing contact piece (22).

9. The enhanced contact assembly of claim 1, wherein, The reinforced contact piece (22) is provided with the arc contact (2b), and the arc contact (2b) of the reinforced contact piece (22) is positioned opposite to the arc contact (2b) of the arc-leading contact piece (21).

10. A switchgear, characterized by Including the enhanced contact assembly as described in any one of 1 to 9.

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