Contact assembly and contactor

Abstract

This application discloses a contact assembly and a contactor, relating to the field of contactor technology. The contact assembly includes a contact bridge, a first stationary contact, and a second stationary contact. The contact bridge includes a first end and a second end. The first stationary contact includes a first stationary contact end, and the second stationary contact includes a second stationary contact end. One of the first end and the first stationary contact end includes multiple first conductive branches, each of which has a first contact. The other of the first end and the first stationary contact end includes a first conductive main path, which has a second contact. One of the second end and the second stationary contact end includes multiple second conductive branches, each of which has a first contact. The other of the second end and the second stationary contact end includes a second conductive main path, which has a second contact. A contact boss is provided on the first contact. The contact assembly and contactor provided by this application can improve the problem of poor contact in contact assemblies and improve the reliability of the contactor.

Description

Technical Field

[0001] This application relates to the field of contactor technology, specifically to a contact assembly and a contactor. Background Technology

[0002] As a commonly used electrical control component, the reliability of the contact assembly in a contactor directly affects its stable operation. In practical applications, poor contact is a common problem in contact assemblies, mainly manifested as: increased contact resistance due to oxidation of the contact surface; uneven contact surface caused by arc erosion; and the accumulation of contaminants forming an insulating layer. These problems are particularly prominent in auxiliary contacts, as their contact pressure is lower and they are more sensitive to changes in surface condition, easily leading to signal transmission failure or malfunctions in control commands.

[0003] Currently, the main technical means to improve contact reliability include installing multiple contact bridges to increase the number of contacts. Although paralleling contacts can reduce the risk of single-point failure to some extent, simply increasing the number of contacts will lead to the dispersion of contact pressure, which may reduce the effective contact pressure of a single contact and result in poor contact.

[0004] Therefore, there is an urgent need to propose a contact assembly to solve the problems existing in the current technology. Utility Model Content

[0005] The purpose of this application is to provide a contact assembly and a contactor that can improve the problem of poor contact in the contact assembly and improve the reliability of the contactor.

[0006] In a first aspect, embodiments of this application provide a contact assembly, including a contact bridge, a first stationary contact, and a second stationary contact. The contact bridge includes a first end and a second end, the first stationary contact includes a first stationary contact end, and the second stationary contact includes a second stationary contact end.

[0007] One of the first terminal and the first stationary contact terminal includes multiple first conductive branches, each of which is provided with a first contact. The other of the first terminal and the first stationary contact terminal includes a first conductive main circuit, which is provided with a second contact. The second contact on the first conductive main circuit can make electrical contact with the first contacts on the multiple first conductive branches.

[0008] One of the second terminal and the second stationary contact includes multiple second conductive branches, each of which has a first contact. The other of the second terminal and the second stationary contact includes a second conductive main path, which has a second contact. The second contact on the second conductive main path can make electrical contact with the first contacts on the multiple second conductive branches.

[0009] The first contact point is provided with a contact boss, and the projected area of ​​the contact boss in the vertical direction of the contact surface of the second contact point is smaller than the projected area of ​​the first contact point in the same direction.

[0010] Through the above scheme, the contact bridge can not only improve the conductivity stability between the first and second stationary contacts by increasing the number of contact points, but also increase the pressure at the contact point by appropriately reducing the contact area between the first and second contacts, further enhancing contact reliability and conductivity stability. Furthermore, this design of the contact bridge is characterized by its simple structure, ease of processing and molding, rapid assembly, and high conductivity stability, making it highly practical.

[0011] In some examples, the contact surface of the second contact is provided with a serrated boss, the contact surface of the contact boss is set as a plane, and the contact surface of the contact boss abuts against the top of the serrated boss.

[0012] By providing serrated protrusions on the contact surface of the second contact, stable contact with the contact protrusion can be ensured while reducing the contact area between the second contact and the contact protrusion. This further increases the pressure at the contact point between the second contact and the contact protrusion, thereby improving contact stability. Furthermore, this design facilitates the compression of impurities into the grooves between adjacent protrusions in the serrated protrusion during contact, reducing the impact of impurities on contact stability and improving the conductivity reliability of the contact bridge.

[0013] In some examples, multiple first conductive branches are arranged in parallel and spaced apart, and multiple second conductive branches are arranged in parallel and spaced apart. Both the first and second conductive branches are configured as extension plates, and the length-to-width ratio of the extension plates ranges from 3:1 to 5:1.

[0014] The parallel spacing between each first conductive branch and each second conductive branch ensures the independence of the current path. Even if individual paths experience poor contact due to contact contamination or oxidation, other paths can still maintain effective conduction. Furthermore, the aspect ratio of the first and second conductive branches is designed within this range, allowing each first and second conductive branch to have a certain amount of elastic deformation. This ensures that each first and second conductive branch can accurately and individually abut against the corresponding first and second stationary contacts, which is beneficial to improving the conduction stability of the contact assembly.

[0015] In some examples, the contact bridge further includes an assembly portion located between the first end and the second end. The assembly portion includes a first limiting structure and a second limiting structure disposed opposite to each other. The first limiting structure includes a first flange, a second flange, and a first limiting groove formed between them. The second limiting structure includes a third flange, a fourth flange, and a second limiting groove formed between them. The first flange and the third flange have the same folding direction, and the second flange and the fourth flange have the same folding direction. Furthermore, the first flange, the second flange, the third flange, and the fourth flange are all folded to the same side of the assembly portion.

[0016] This configuration allows for both limiting installation by clamping the first and second flanges at corresponding positions on the contact support, and limiting installation by using the first limiting groove in conjunction with the corresponding structure on the contact support. It features a simple structure, easy assembly, and stable installation.

[0017] By adjusting the folding direction of the first, second, third, and fourth flanges, all four flanges are positioned on the same side of the assembly section. This facilitates processing and reduces processing costs. Furthermore, it makes the contact bridge an axisymmetric structure, which is convenient for assembly to the contact support and improves assembly stability.

[0018] In some examples, the first flange and the second flange are both provided with a first guide arc surface on the inner side facing the first limiting groove, and the third flange and the fourth flange are both provided with a second guide arc surface on the inner side facing the second limiting groove.

[0019] By setting a first guide arc surface on the first flange and the second flange, the parts of the first flange and the second flange that contact the first guide rail can always maintain line-to-surface contact. This can not only enhance the assembly stability of the first limiting structure and the first guide rail through the first flange and the second flange, but also ensure smooth sliding between the contact bridge and the first guide rail, which is conducive to improving the assembly reliability of the contact bridge.

[0020] In some examples, the folding angles of the first, second, third, and fourth flanges are all greater than 90° to form a guide arc surface.

[0021] By folding each flange more than 90°, a corresponding guide arc surface can be naturally formed on the inner side of each flange. Furthermore, with the one-piece molding design, each flange not only ensures high structural strength but also reduces additional processing steps, which helps save processing costs.

[0022] Secondly, this application embodiment also provides a contactor, including a contact support and the aforementioned contact assembly. The contact support is provided with an assembly hole, and a first guide rail and a second guide rail are provided in the assembly hole. The contact bridge is installed in the assembly hole, and the first guide rail is slidably engaged with a first limiting groove, and the second guide rail is slidably engaged with a second limiting groove.

[0023] The contact bridge, through the connection of the first limiting groove to the first guide rail and the connection of the second limiting groove to the second guide rail, can realize the limiting installation and sliding limiting of the contact bridge on the contact support. Correspondingly, the first flange, the second flange, the third flange and the fourth flange also work together with the first guide rail and the second guide rail to further enhance the connection stability and sliding reliability. This combination form has a simple structure, is easy to assemble, and can make the contact bridge slide smoothly and accurately on the contact support, which is conducive to the accurate control of the contactor to open and close.

[0024] In some examples, the first guide rail abuts against the first guide arc surface in the first limiting groove, and the second guide rail abuts against the second guide arc surface in the second limiting groove.

[0025] In some examples, the first guide rail is spaced apart from the bottom of the first limiting groove, the second guide rail is spaced apart from the bottom of the second limiting groove, and the first flange, second flange, third flange and fourth flange located in the spaced portion form an auxiliary positioning structure on the assembly part.

[0026] By leaving a gap between the first guide rail and the first limiting groove, a contact allowance can be reserved for the first and second flanges on the side near the center of the assembly part. Similarly, the gap between the second guide rail and the second limiting groove can be the contact allowance reserved for the third and fourth flanges on the side near the center of the assembly part. The auxiliary positioning structure formed in this way does not require a separate structure for installing the elastic element, which is easy to process and form, and has the characteristics of easy assembly, simple and reliable structure, which is conducive to realizing the rapid assembly of the elastic element.

[0027] In some examples, an elastic element is provided in the assembly hole, with the first end of the elastic element fixedly connected to the assembly hole, the second end of the elastic element abutting against the assembly part, and the second end of the elastic element being engaged with the auxiliary positioning structure.

[0028] The elastic element provides elastic force to the contact bridge within the mounting hole. When the contactor is open, the elastic element compresses and stores energy. When the contactor needs to close, the elastic element quickly releases energy and pushes the contact bridge to slide into contact with the first and second stationary contacts, which helps improve the closing speed and reduces the risk of arcing. The auxiliary positioning structure helps position the elastic element, reducing the possibility of it detaching from the mounting hole. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of the contact support provided in an embodiment of this application.

[0031] Figure 2 This is a schematic diagram of the first engagement method of the contact bridge, the first stationary contact, and the second stationary contact provided in the embodiments of this application.

[0032] Figure 3This is a schematic diagram of a second type of engagement between the contact bridge, the first stationary contact, and the second stationary contact provided in an embodiment of this application.

[0033] Figure 4 A first view of a contact bridge provided in an embodiment of this application.

[0034] Figure 5 This is a schematic diagram of a conductive path formed on a contact bridge according to an embodiment of this application.

[0035] Figure 6 A second view of the contact bridge provided in an embodiment of this application.

[0036] Figure 7 This is a schematic diagram of the structure of the contact bridge provided in the embodiment of this application being assembled in the assembly hole.

[0037] Figure 8 Provided for the embodiments of this application Figure 7 Sectional view at EE.

[0038] Figure 9 This is a schematic diagram of the assembly of the contact bridge and the elastic element provided in an embodiment of this application.

[0039] Explanation of reference numerals in the attached drawings: 1. Contact support; 11. Assembly hole; 111. First guide rail; 112. Second guide rail; 12. Elastic element; 2. Contact bridge; 21. First end; 22. Second end; 23. Assembly part; 231. First limiting structure; 2311. First flange; 2312. Second flange; 2313. First limiting groove; 2314. First guide arc surface; 232. Second limiting structure; 2321. Third flange; 2322. Fourth flange; 2323, Second limiting groove; 2324, Second guide arc surface; 3, First stationary contact; 31, First stationary contact end; 4, Second stationary contact; 41, Second stationary contact end; A, First passage; B, Second passage; C, Third passage; D, Fourth passage; W1, First conductive branch; W2, Second conductive branch; W3, First contact point; W4, Contact boss; X1, First conductive main path; X2, Second conductive main path; X3, Second contact point; X4, Serrated boss. Detailed Implementation

[0040] 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, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0041] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0042] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0043] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for 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. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

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

[0046] Reference Figure 1 This application provides a contactor including a contact support 1 and a contact assembly. The contact assembly includes a first stationary contact 3, a second stationary contact 4, and a contact bridge 2. In the contactor, the contact support 1 is used to fix and support the first stationary contact 3, the second stationary contact 4, and the contact bridge 2 to ensure that the contact bridge 2 can maintain a stable relative movement with respect to the first stationary contact 3 and the second stationary contact 4 during the opening and closing process, thereby enabling the contactor to accurately and reliably achieve opening and closing.

[0047] Specifically, the first stationary contact 3 and the second stationary contact 4 are mounted on opposite sides of the contact support 1, and the contact bridge 2 is movably mounted on the contact support 1 and located between the first stationary contact 3 and the second stationary contact 4. When the contactor is closed, the contact bridge 2 can move to simultaneously abut against the first stationary contact 3 and the second stationary contact 4 to establish a conductive path between the first stationary contact 3 and the second stationary contact 4, carrying load current or transmitting signals.

[0048] The specific structure of the contact assembly provided in this application will be described in detail below with reference to the accompanying drawings.

[0049] Reference Figures 2 to 4 The contact bridge 2 includes a first end 21 and a second end 22, the first stationary contact 3 includes a first stationary contact end 31, and the second stationary contact 4 includes a second stationary contact end 41.

[0050] Specifically, the overall structure of the contact bridge 2 is a long strip-shaped sheet structure, with the first end 21 and the second end 22 being opposite ends on the contact bridge 2. The first stationary contact 3 and the second stationary contact 4 are both parallel to the contact bridge 2 and located on the same side of the contact bridge 2. The projection of the first stationary contact 31 onto the plane of the contact bridge 2 coincides with the projection of the first end 21 onto the plane of the contact bridge 2, and the projection of the second stationary contact 41 onto the plane of the contact bridge 2 coincides with the projection of the second end 22 onto the plane of the contact bridge 2. The first stationary contact 31 is located on the side of the first stationary contact 3 closest to the second stationary contact 4, and the second stationary contact 41 is located on the side of the second stationary contact 4 closest to the first stationary contact 3.

[0051] Reference Figure 2 and Figure 3 One of the first end 21 and the first stationary contact end 31 includes multiple first conductive branches W1, and each first conductive branch W1 is provided with a first contact W3. The other of the first end 21 and the first stationary contact end 31 includes a first conductive main line X1, and the first conductive main line X1 is provided with a second contact X3. The second contact X3 on the first conductive main line X1 can make electrical contact with the first contact W3 on the multiple first conductive branches W1.

[0052] In other words, multiple first conductive branches W1 can be set at the first end 21 or at the first stationary contact end 31. When the first end 21 of the contact bridge 2 is provided with multiple first conductive branches W1, the first stationary contact end 31 has only one first conductive main line X1. Multiple first conductive branches W1 are simultaneously electrically connected to the first conductive main line X1, which can combine multiple conductive paths between the contact bridge 2 and the first stationary contact 3. Combined with the electrical connection between the second end 22 and the second stationary contact 4, a complete circuit can be formed.

[0053] Unless multiple first conductive branches W1 and the first conductive main line X1 experience simultaneous poor contact, at least one conductive path will be able to complete the entire circuit. This effectively improves the conductivity stability between the contact bridge 2 and the first stationary contact 3.

[0054] Similarly, when the first stationary contact 31 is provided with multiple first conductive branches W1, the first end 21 of the contact bridge 2 has only one first conductive main branch X1. This embodiment has the same function and effect as the aforementioned embodiment, and will not be described again here.

[0055] Additionally, refer to Figure 2 and Figure 3 One of the second end 22 and the second stationary contact 41 includes multiple second conductive branches W2, each of which is provided with a first contact W3. The other of the second end 22 and the second stationary contact 41 includes a second conductive main path X2, which is provided with a second contact X3. The second contact X3 on the second conductive main path X2 can make electrical contact with the first contact W3 on the multiple second conductive branches W2.

[0056] In other words, multiple second conductive branches W2 can be set at the second end 22 or at the second stationary contact end 41. When the second end 22 of the contact bridge 2 is provided with multiple second conductive branches W2, the second stationary contact end 41 has only one second conductive main line X2. Multiple second conductive branches W2 are simultaneously electrically connected to the second conductive main line X2, which can combine multiple conductive paths between the contact bridge 2 and the second stationary contact 4. Combined with the electrical connection between the first end 21 and the first stationary contact 3, a complete circuit can be formed.

[0057] Unless multiple second conductive branches W2 and the second conductive main branch X2 experience simultaneous poor contact, at least one conductive path will be able to maintain the complete circuit. This effectively improves the conductivity stability between the contact bridge 2 and the second stationary contact 4.

[0058] Similarly, when the second stationary contact 41 is provided with multiple second conductive branches W2, the second end 22 of the contact bridge 2 has only one second conductive main branch X2. This embodiment has the same function and effect as the aforementioned embodiment, and will not be described again here.

[0059] Reference Figure 2 In this application, multiple first conductive branches W1 are set at the first end 21 of the contact bridge 2, and multiple second conductive branches W1 are set at the second end 22. Correspondingly, the first stationary contact 31 is set as a first conductive main line X1, and the second stationary contact 41 is set as a second conductive main line X2.

[0060] This allows multiple paths to be created between the first stationary contact 3 and the second stationary contact 4 by the contact bridge 2. Even if one path fails to conduct due to poor contact or damage, at least one path still ensures that the first stationary contact 3 and the second stationary contact 4 are connected. This effectively solves the problem of the contact bridge 2 failing to conduct due to poor contact in a single contact bridge design, and is beneficial to improving the stability of the contactor.

[0061] Specifically, continue to refer to Figures 2 to 5 The first conductive branch W1 has two branches, and the second conductive branch W2 also has two branches, thus allowing for four possible conductive paths to be arranged and combined on the contact bridge 2, such as... Figure 4 The first path A, the second path B, the third path C, and the fourth path D are shown. Even if one, two, or even three conductive paths fail, the contact bridge 2 still has one conductive path that can enable the first stationary contact 3 and the second stationary contact 4 to conduct.

[0062] Of course, the first conductive branch W1 can also be set to three or more. The number of the second conductive branch W2 and the first conductive branch W1 can be the same or different. As long as the two can be arranged and combined to form multiple conductive paths, it will help improve the conductivity stability of the contact bridge 2.

[0063] It should be noted that, in the embodiments of this application, both the first end 21 and the first stationary contact end 31 may be provided with multiple first conductive branches W1, and the number of first conductive branches W1 on the first end 21 is the same as the number of first conductive branches W1 on the first stationary contact end 31. The first conductive branches W1 on the first end 21 and the first conductive branches W1 on the first stationary contact end 31 are connected one-to-one to form multiple conductive paths between the contact bridge 2 and the first stationary contact 3.

[0064] Similarly, both the second end 22 and the second stationary contact 41 can be provided with multiple second conductive branches W2, and the number of second conductive branches W2 on the second end 22 is the same as the number of second conductive branches W2 on the second stationary contact 41. The second conductive branches W2 on the second end 22 and the second conductive branches W2 on the second stationary contact 41 are connected one-to-one to form multiple conductive paths between the contact bridge 2 and the second stationary contact 4. Both of these forms can achieve the formation of multiple paths between the first stationary contact 3 and the second stationary contact 4, making the conduction between them more reliable.

[0065] Furthermore, combined Figures 2 to 5 Each first conductive branch W1 is provided with a first contact W3, and the first conductive main branch X1 is provided with a second contact X3. During the contactor closing process, as the contact bridge 2 moves, each first conductive branch W1 contacts the second contact X3 through the first contact W3 to achieve electrical contact connection between the contact bridge 2 and the first stationary contact 3.

[0066] Even if one of the first contacts W3 of the multiple first conductive branches W1 is contaminated or corroded and cannot conduct electricity with the second contact X3 of the first conductive main branch X1, the remaining first contacts W3 can still connect with the second contact X3.

[0067] Similarly, each second conductive branch W2 is provided with a first contact W3, and the second conductive main branch X2 is provided with a second contact X3. Each second conductive branch W2 is in contact with the second contact X3 through the first contact W3 to realize the electrical contact connection between the contact bridge 2 and the second stationary contact 4.

[0068] Even if one of the first contacts W3 in the multiple second conductive branches W2 is contaminated or corroded and cannot conduct, preventing connection between the first contact W3 and the second contact X3 in the second conductive main branch X2, the remaining first contacts W3 can still connect with that second contact X3. This design of the contact bridge 2 effectively solves the problem of the contact bridge 2 failing to conduct due to contact failure in the single contact bridge 2 design, which is beneficial to improving the stability of the contactor.

[0069] Reference Figures 2 to 5 The first contact point W3 is provided with a contact boss 213. The projected area of ​​the contact boss 213 in the vertical direction of the contact surface of the second contact point X3 is smaller than the projected area of ​​the first contact point W3 in the same direction.

[0070] Specifically, the contact boss 213 is located on the side of the first contact W3 facing the second contact X3. During the movement of the contact bridge 2 relative to the first stationary contact 3 and the second stationary contact 4, the first contact W3 is always in a direction perpendicular to the contact surface of the second contact X3. The contact boss 213 protrudes from the contact surface of the first contact W3.

[0071] The projected area of ​​the contact boss 213 on the second contact X3 is smaller than the projected area of ​​the entire first contact W3 on the second contact X3. This means that when the contact boss 213 and the second contact X3 are in contact, the contact area between the contact boss 213 and the second contact X3 is smaller. Compared with the traditional form where the first contact W3 directly contacts the second contact X3 over a large area, this embodiment can increase the pressure at the contact position by reducing the contact area, thereby making the contact between the second contact X3 and the first contact W3 tighter and the conduction more reliable.

[0072] Through the above scheme, the contact bridge 2 can not only improve the conductivity stability between the first stationary contact 3 and the second stationary contact 4 by increasing the number of contact points, but also increase the pressure at the contact point by appropriately reducing the contact area between the first contact W3 and the second contact X3, further enhancing contact reliability and conductivity stability. Furthermore, this design of the contact bridge 2 is characterized by its simple structure, ease of processing and molding, rapid assembly, and high conductivity stability, making it highly practical.

[0073] Reference Figures 2 to 5 In some examples, the contact surface of the second contact X3 is provided with a serrated boss X4, the contact surface of the contact boss 213 is set as a plane, and the contact surface of the contact boss 213 abuts against the top of the serrated boss X4.

[0074] By providing a serrated protrusion X4 on the contact surface of the second contact X3, stable contact with the contact protrusion 213 can be ensured while reducing the contact area between the second contact X3 and the contact protrusion 213. This further increases the pressure at the contact point between the second contact X3 and the contact protrusion 213, thereby improving contact stability. Furthermore, this design facilitates the compression of impurities into the grooves between adjacent protrusions in the serrated protrusion X4 during contact, reducing the impact of impurities on contact stability and improving the conductivity reliability of the contact bridge 2.

[0075] Specifically, refer to Figure 2 The serrated protrusion X4 is laid flat on the contact surface of the second contact X3. The serrated protrusion X4 includes multiple protrusions arranged in parallel intervals. The top of each protrusion can be designed as a pointed head, a round head, or a flat surface, all of which can reduce the contact area and increase the contact pressure.

[0076] When the contact boss 213 and the serrated boss X4 are in contact, the contact bridge 2 is subjected to a large force, and the contact boss 213 can squeeze the top of the serrated boss X4, causing the pointed top of the protrusion to deform slightly. This can slightly increase the contact area between the contact boss 213 and the serrated boss X4 and enhance the stability of the contact conduction.

[0077] Reference Figures 4 to 6 In some examples, multiple first conductive branches W1 are arranged in parallel and spaced apart, and multiple second conductive branches W2 are arranged in parallel and spaced apart. Both the first conductive branches W1 and the second conductive branches W2 are configured as extension plates, and the ratio of the length to the width of the extension plates ranges from 3:1 to 5:1.

[0078] The parallel spacing between each first conductive branch W1 and the parallel spacing between each second conductive branch W2 ensure the independence of the current path, reducing mutual interference and influence caused by adjacent conductive branches being too close. Even if individual paths have poor contact due to contact contamination or oxidation, other paths can still maintain effective conduction.

[0079] Furthermore, the aspect ratio of the first conductive branch W1 and the second conductive branch W2 is designed to be in the range of 3:1 to 5:1, so that both the first conductive branch W1 and the second conductive branch W2 are long strip-shaped extension plate structures, which can enhance the elastic deformation capability of each first conductive branch W1 and each second conductive branch W2.

[0080] When one of the conductive branches is unable to make contact due to impurities between the first contact W3 and the second contact X3, the adjacent conductive branch can maintain stable contact between the first contact W3 and the second contact X3 through elastic deformation, which is beneficial to improving the conductivity stability of the contact assembly.

[0081] Furthermore, the spaced arrangement facilitates arc dispersion and cooling, reducing contact erosion. Of particular note is that this design, by increasing the number of parallel conductive paths, significantly reduces the overall contact resistance without increasing the pressure on individual contacts, while also avoiding the stress concentration problem commonly found in traditional integral contact bridges.

[0082] Multiple first conductive branches W1 and multiple second conductive branches W2 are also arranged at intervals. Compared with the traditional installation of multiple separate contact bridges 2, this embodiment can significantly improve the installation efficiency of contact bridges 2 while satisfying the requirement of forming multiple conductive paths, which is conducive to improving the assembly efficiency of contactors and the reliability of conduction.

[0083] Specifically, refer to Figure 3 and Figure 4 The two adjacent first conductive branches W1 are arranged in parallel intervals. The extension direction of the first conductive branches W1 is towards the direction away from the second end 22. The first contact W3 on the first conductive branch W1 is located at the end of the first conductive branch W1 and is on the side of the first end 21 facing the first stationary contact 3.

[0084] In this embodiment, the spacing between two adjacent first conductive branches W1 is half the width of the first conductive branch W1. This spacing can satisfy the condition that the two paths do not affect each other without excessively increasing the volume of the contact bridge 2.

[0085] Furthermore, the ratio of the length of the first conductive branch W1 extending outward from the assembly part 23 to its own width is 4:1. This length-to-width ratio ensures that the first conductive branch W1 has sufficient strength while also providing sufficient elastic deformation. This allows the other first conductive branch W1 to elastically deform and contact the first stationary contact 3 when an adjacent first conductive branch W1 is blocked from contact by debris. This effectively improves the reliability of the contact assembly.

[0086] The first end 21 and the second end 22 are symmetrically arranged. The second conductive branch W2 has the same structure as the first conductive branch W1, and the second conductive branch W2 and the second stationary contact 4 have the same cooperation form as the first conductive branch W1 and the first stationary contact 3, and have the same technical effect, which will not be described in detail here.

[0087] Reference Figures 5 to 7In some examples, the assembly part 23 includes a first limiting structure 231 and a second limiting structure 232 disposed opposite to each other. The first limiting structure 231 includes a first flange 2311 and a second flange 2312, and a first limiting groove 2313 is formed between the first flange 2311 and the second flange 2312. The second limiting structure 232 includes a third flange 2321 and a fourth flange 2322, and a second limiting groove 2323 is formed between the third flange 2321 and the fourth flange 2322.

[0088] Reference Figure 5 The assembly part 23 is located in the middle of the contact bridge 2, that is, between the first end 21 and the second end 22. The first limiting structure 231 and the second limiting structure 232 are arranged opposite to each other, specifically located on both sides of the assembly part 23. The first limiting structure 231 and the second limiting structure 232 can cooperate with the corresponding structures on the contact support 1 to achieve relative fixation between the assembly part 23 and the contact support 1 through a two-point limiting installation method.

[0089] Specifically, the first limiting structure 231 includes a first flange 2311, a second flange 2312, and a first limiting groove 2313. The first flange 2311 and the second flange 2312 are folded at a certain angle based on the assembly part 23 and protrude from the assembly part 23. After the first flange 2311 and the second flange 2312 are folded, the first limiting groove 2313 is formed between them.

[0090] This configuration allows for both limiting installation by clamping the first flange 2311 and the second flange 2312 at corresponding positions on the contact support 1, and limiting installation by using the first limiting groove 2313 in conjunction with the corresponding structure on the contact support 1. It features a simple structure, easy assembly, and stable installation.

[0091] The second limiting structure 232 has the same configuration as the first limiting structure 231, and the cooperation between the second limiting structure 232 and the contact support 1 is also the same as that between the first limiting structure 231 and the contact support 1. The second limiting structure 232 is located on the side of the assembly part 23 opposite to the first limiting structure 231. The third flange 2321 and the fourth flange 2322 are folded at a certain angle based on the assembly part 23 and protrude from the assembly part 23, forming a second limiting groove 2323 between them. The second limiting structure 232 has the same structural features and technical effects as the first limiting structure 231, and will not be described in detail here.

[0092] Reference Figure 5 The first flange 2311 and the third flange 2321 are folded in the same direction, the second flange 2312 and the fourth flange 2322 are folded in the same direction, and the first flange 2311, the second flange 2312, the third flange 2321 and the fourth flange 2322 are all folded to the same side of the assembly part 23.

[0093] By adjusting the folding directions of the first flange 2311, the second flange 2312, the third flange 2321, and the fourth flange 2322, all four flanges are located on the same side of the assembly part 23. This facilitates processing and saves processing costs. On the other hand, it makes the contact bridge 2 an axisymmetric structure, which is convenient for assembly to the contact support 1 and helps improve assembly stability.

[0094] Specifically, the first flange 2311 and the third flange 2321 are folded towards the first end 21 based on the assembly part 23, and the second flange 2312 and the fourth flange 2322 are folded towards the second end 22 based on the assembly part 23.

[0095] Furthermore, the first flange 2311, the second flange 2312, the third flange 2321, and the fourth flange 2322 are all folded from the same side of the contact bridge 2, which is the side opposite to the first end 21 and the second end 22 where the contacts are located. This arrangement makes it easier to distinguish the side of the contact bridge 2 where the contacts are located, thus allowing for quick and accurate installation during the installation process, avoiding the situation where the contact bridge 2 is installed backwards, and improving assembly efficiency.

[0096] Furthermore, all four flanges are of the same length and are connected to the contact support 1 on both sides of the assembly part 23 for limiting, which improves the smoothness of the contact bridge 2's movement and its positioning accuracy. In addition, the one-piece molded flange structure enhances the overall mechanical strength, allowing the contact bridge 2 to withstand higher frequency switching operations without easily deforming. These improvements collectively enhance the contactor's reliability and service life during long-term use.

[0097] Reference Figures 5 to 7 In some examples, the contact support 1 is provided with an assembly hole 11, and the assembly hole 11 is provided with a first guide rail 111 and a second guide rail 112. The first guide rail 111 is slidably engaged with the first limiting groove 2313, and the second guide rail 112 is slidably engaged with the second limiting groove 2323.

[0098] The contact bridge 2 is connected to the first guide rail 111 via the first limiting groove 2313 and to the second guide rail 112 via the second limiting groove 2323. This enables the contact bridge 2 to be installed and slide on the contact support 1 with limited positioning. Correspondingly, the first flange 2311, the second flange 2312, the third flange 2321 and the fourth flange 2322 work together with the first guide rail 111 and the second guide rail 112 to further enhance the connection stability and sliding reliability. This type of cooperation is simple in structure, easy to assemble, and enables the contact bridge 2 to slide smoothly and accurately on the contact support 1, which is beneficial to the accurate control of the contactor's opening and closing.

[0099] Among them, reference Figure 6 and Figure 7The first guide rail 111 and the second guide rail 112 are disposed on two opposite side walls in the assembly hole 11. The first guide rail 111 and the second guide rail 112 are boss structures, and the shape and size of the bosses match the shape and size of the first limiting groove 2313 and the second limiting groove 2323.

[0100] During assembly, the contact bridge 2 needs to be tilted relative to the assembly hole 11 first, then inserted into the assembly hole 11 until the opening of the first limiting groove 2313 corresponds to the first guide rail 111 and the opening of the second limiting groove 2323 corresponds to the second guide rail 112. Finally, the contact bridge 2 is rotated to be horizontal relative to the assembly hole 11 so that the first guide rail 111 is inserted into the first limiting groove 2313 and the second guide rail 112 is inserted into the second limiting groove 2323. The assembly operation is relatively simple and can be completed quickly without contact with other tools or carriers, effectively improving the assembly efficiency of the contact bridge 2.

[0101] Reference Figure 5 In some examples, the first flange 2311 and the second flange 2312 are provided with a first guide arc surface 2314 on the inner side facing the first limiting groove 2313, and the third flange 2321 and the fourth flange 2322 are provided with a second guide arc surface 2324 on the inner side facing the second limiting groove 2323.

[0102] By providing a first guide arc surface 2314 on the first flange 2311 and the second flange 2312, the parts of the first flange 2311 and the second flange 2312 that contact the first guide rail 111 can always maintain line-to-surface contact. This not only enhances the assembly stability of the first limiting structure 231 and the first guide rail 111 through the first flange 2311 and the second flange 2312, but also reduces the wear between the contact bridge 2 and the first guide rail 111, ensuring smooth sliding between the contact bridge 2 and the first guide rail 111, which is beneficial to extending the service life.

[0103] Similarly, by providing second guide arc surfaces 2324 on the third flange 2321 and the fourth flange 2322, the parts of the third flange 2321 and the fourth flange 2322 that contact the second guide rail 112 can always maintain line-to-surface contact. This not only enhances the assembly stability of the second limiting structure 232 and the second guide rail 112 through the third flange 2321 and the fourth flange 2322, but also reduces the wear between the contact bridge 2 and the second guide rail 112, ensuring smooth sliding between the contact bridge 2 and the second guide rail 112, which is beneficial to extending the service life.

[0104] Specifically, refer to Figure 5 The first flange 2311 and the second flange 2312 are enclosed to form a first limiting groove 2313. The side of the first flange 2311 facing the first limiting groove 2313 is the inner side of the first flange 2311, and the same applies to the second flange 2312.

[0105] The first guide rail 111 abuts against the first guide arc surface 2314 in the first limiting groove 2313, and the second guide rail 112 abuts against the second guide arc surface 2324 in the second limiting groove 2323.

[0106] The inner sides of the first flange 2311 and the second flange 2312 are both set as the first guide arc surface 2314, and both are in direct contact with the side of the first guide rail 111. The arc surface is designed in combination with the planar shape of the side of the first guide rail 111, so that the first guide arc surface 2314 and the side of the first guide rail 111 always maintain line-plane contact, which helps to reduce friction and thus improve the smoothness of sliding fit while ensuring assembly stability.

[0107] The third flange 2321 and the fourth flange 2322 enclose each other to form a second limiting groove 2323. The side of the third flange 2321 facing the second limiting groove 2323 is the inner side of the third flange 2321, and the same applies to the fourth flange 2322.

[0108] The inner sides of both the third flange 2321 and the fourth flange 2322 are configured as the second guide arc surface 2324, and both are in direct contact with the side of the second guide rail 112. The design of the second limiting structure 232 and its cooperation with the second guide rail 112 are the same as those of the first limiting structure 231, and have the same technical effect, which will not be described in detail here.

[0109] Reference Figure 5 In some examples, the folding angles of the first flange 2311, the second flange 2312, the third flange 2321, and the fourth flange 2322 are all greater than 90° to form a guide arc surface.

[0110] By folding each flange more than 90°, a corresponding guide arc surface can be naturally formed on the inner side of each flange. Furthermore, with the one-piece molding design, each flange not only ensures high structural strength but also reduces additional processing steps, which helps save processing costs.

[0111] Specifically, the first flange 2311, the second flange 2312, the third flange 2321, and the fourth flange 2322 are all on the same plane as the assembly part 23 before folding. During the folding process, the first flange 2311 and the third flange 2321 are folded more than 90° towards the first end 21 based on the assembly part 23, so that the first flange 2311 and the third flange 2321 are not perpendicular to the assembly part 23. The second flange 2312 and the fourth flange 2322 are folded more than 90° towards the second end 22 based on the assembly part 23, so that the second flange 2312 and the fourth flange 2322 are not perpendicular to the assembly part 23.

[0112] Reference Figures 5 to 7The first flange 2311 and the second flange 2312 are not perpendicular to the assembly part 23. This allows the first flange 2311 and the second flange 2312 to not completely abut against the first guide rail 111, thereby achieving a line-surface contact fit between the first guide arc surface 2314 and the first guide rail 111. While ensuring smooth sliding between the first limiting structure 231 and the first guide rail 111, this simplifies the processing steps and facilitates rapid processing and assembly. Similarly, the fit between the third flange 2321, the fourth flange 2322, and the second guide rail 112 has the same technical effect, and will not be described in detail here.

[0113] Reference Figures 5 to 8 In some examples, the first guide rail 111 is spaced apart from the bottom of the first limiting groove 2313, the second guide rail 112 is spaced apart from the bottom of the second limiting groove 2323, and the first flange 2311, the second flange 2312, the third flange 2321 and the fourth flange 2322 located in the spaced portion form an auxiliary positioning structure on the assembly part 23.

[0114] Reference Figures 6 to 8 Furthermore, in some examples, an elastic element 12 is provided in the assembly hole 11, the first end 21 of the elastic element 12 is fixedly connected to the assembly hole 11, the second end 22 of the elastic element 12 abuts against the assembly part 23, and the second end 22 of the elastic element 12 is engaged with the auxiliary positioning structure.

[0115] By leaving a gap between the first guide rail 111 and the first limiting groove 2313, a contact allowance can be reserved for the first flange 2311 and the second flange 2312 on the side near the center of the assembly part 23. Similarly, the gap between the second guide rail 112 and the second limiting groove 2323 can be the contact allowance reserved for the third flange 2321 and the fourth flange 2322 on the side near the center of the assembly part 23. The auxiliary positioning structure formed in this way does not require a separate structure for installing the elastic element 12, which is easy to process and form, and has the characteristics of easy assembly, simple and reliable structure, which is conducive to realizing the rapid assembly of the elastic element 12.

[0116] Specifically, refer to Figure 6 and Figure 7 The thickness of the protrusion of the first guide rail 111 based on the mounting hole 11 is less than the depth of the first limiting groove 2313. After the first guide rail 111 is assembled with the first limiting groove 2313, the two sides of the mounting part 23 near the first limiting groove 2313 abut against the hole wall where the first guide rail 111 is set, so as to limit the position of the first guide rail 111 and maintain the gap between the first guide rail 111 and the first limiting groove 2313.

[0117] Since the first limiting groove 2313 is composed of the first flange 2311 and the second flange 2312, the part of the first flange 2311 and the part of the second flange 2312 corresponding to the gap do not contact the first guide rail 111, which means that the first flange 2311 and the second flange 2312 on the side near the center of the assembly part 23 can form part of the auxiliary positioning structure.

[0118] Similarly, the thickness of the protrusion of the mounting hole 11 is less than the depth of the second limiting groove 2323. After the second guide rail 112 is assembled with the second limiting groove 2323, the two sides of the mounting part 23 near the second limiting groove 2323 abut against the hole wall where the second guide rail 112 is set, so as to limit the position of the second guide rail 112 and maintain the gap between the second guide rail 112 and the second limiting groove 2323.

[0119] Since the second limiting groove 2323 is composed of the third flange 2321 and the fourth flange 2322, the part of the third flange 2321 and the part of the fourth flange 2322 corresponding to the gap do not contact the second guide rail 112, which means that the third flange 2321 and the fourth flange 2322 on the side close to the center of the assembly part 23 can form part of the auxiliary positioning structure.

[0120] Reference Figure 8 These two parts together form a complete auxiliary positioning structure. The second end 22 of the elastic element 12 can be precisely constrained at the center position of the assembly part 23 by the first flange 2311, the second flange 2312, the third flange 2321, and the fourth flange 2322. Compared with the traditional solution of stamping a positioning boss at the center of the contact bridge 2 to position the elastic element 12, this embodiment can avoid stress concentration at the center position of the contact bridge 2, which is conducive to maintaining the stability of the contact bridge 2 structure, extending the service life of the contact bridge 2, and is also easy to process. Moreover, the assembly operation is simple, and there is no need to align the elastic element 12 with the positioning boss, which helps to improve assembly efficiency.

[0121] The elastic element 12 provides elastic force to the contact bridge 2 in the mounting hole 11. When the contactor is open, the elastic element 12 compresses and stores energy. When the contactor needs to be closed, the elastic element 12 can quickly release energy and push the contact bridge 2 to slide into contact with the first stationary contact 3 and the second stationary contact 4, which helps to improve the closing speed and reduce the risk of electric arc.

[0122] The elastic element 12 can be configured as a compression spring or a spring washer or other elastic structural component.

[0123] Furthermore, the elastic element 12 significantly reduces bounce during contact collisions, improving contact reliability. Adaptive pressure regulation ensures stable contact performance throughout its entire service life. These advantages make the contactor particularly suitable for industrial automation scenarios requiring frequent operation and stringent reliability standards.

[0124] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A contact assembly, characterized by, It includes a contact bridge, a first stationary contact and a second stationary contact. The contact bridge includes a first end and a second end. The first stationary contact includes a first stationary contact end and the second stationary contact includes a second stationary contact end. One of the first end and the first stationary contact end includes multiple first conductive branches, each of which is provided with a first contact; the other of the first end and the first stationary contact end includes a first conductive main path, which is provided with a second contact, and the second contact on the first conductive main path can make electrical contact with the first contact on the multiple first conductive branches. One of the second end and the second stationary contact end includes multiple second conductive branches, each of which is provided with a first contact; the other of the second end and the second stationary contact end includes a second conductive main path, which is provided with a second contact; the second contact on the second conductive main path can make electrical contact with the first contact on the multiple second conductive branches. The first contact point is provided with a contact boss, and the projected area of ​​the contact boss in the vertical direction of the contact surface of the second contact point is smaller than the projected area of ​​the first contact point in the same direction.

2. The contact assembly of claim 1, wherein, The second contact point has a serrated protrusion on its contact surface. The contact surface of the contact protrusion is set as a plane, and the contact surface of the contact protrusion abuts against the top of the serrated protrusion.

3. The contact assembly of claim 1, wherein, Multiple first conductive branches are arranged in parallel and spaced apart, and multiple second conductive branches are arranged in parallel and spaced apart. Both the first conductive branches and the second conductive branches are configured as extension plates, and the length-to-width ratio of the extension plates ranges from 3:1 to 5:

1.

4. The contact assembly of any of claims 1-3, wherein, The contact bridge also includes an assembly part located between the first end and the second end. The assembly part includes a first limiting structure and a second limiting structure disposed opposite to each other. The first limiting structure includes a first flange, a second flange, and a first limiting groove formed between the two. The second limiting structure includes a third flange, a fourth flange, and a second limiting groove formed between the two. The first flange and the third flange have the same folding direction, the second flange and the fourth flange have the same folding direction, and the first flange, the second flange, the third flange and the fourth flange are all folded to the same side of the assembly part.

5. The contact assembly of claim 4, wherein, The first flange and the second flange are both provided with a first guide arc surface on the inner side facing the first limiting groove, and the third flange and the fourth flange are both provided with a second guide arc surface on the inner side facing the second limiting groove.

6. The contact assembly of claim 5, wherein, The folding angles of the first, second, third, and fourth flanges are all greater than 90° to form a guide arc surface.

7. A contactor characterized by The device includes a contact support and a contact assembly as described in claim 5 or 6. The contact support has an assembly hole, and the assembly hole has a first guide rail and a second guide rail that are opposite to each other. The contact bridge is installed in the assembly hole. The first guide rail is slidably engaged with the first limiting groove, and the second guide rail is slidably engaged with the second limiting groove.

8. The contactor of claim 7, wherein, The first guide rail abuts against the first guide arc surface in the first limiting groove, and the second guide rail abuts against the second guide arc surface in the second limiting groove.

9. The contactor of claim 8, wherein, The first guide rail is spaced apart from the bottom of the first limiting groove, and the second guide rail is spaced apart from the bottom of the second limiting groove. The first flange, the second flange, the third flange, and the fourth flange located in the spaced portion form an auxiliary positioning structure on the assembly part.

10. The contactor of claim 9, wherein, An elastic element is provided in the assembly hole. The first end of the elastic element is fixedly connected to the assembly hole, the second end of the elastic element abuts against the assembly part, and the second end of the elastic element is engaged with the auxiliary positioning structure.

Images