switching assembly

Abstract

The application provides a switch assembly, and relates to the technical field of low-voltage electrical apparatuses. The switch assembly comprises a switch body and a power conversion module. The switch body comprises a first shell, and the power conversion module is installed in the first shell. The power conversion module comprises a second shell, a first circuit board and a second circuit board. The second shell is provided with a mounting cavity. The first circuit board is fixedly installed in the mounting cavity. The second circuit board is fixedly installed in the mounting cavity. The second circuit board is arranged in a spaced-apart manner from the first circuit board, and the second circuit board is electrically connected to the first circuit board. The second circuit board is arranged closer to the bottom wall of the second shell than the first circuit board. In the direction from the first circuit board to the second circuit board, the projection of the first circuit board substantially coincides with the projection of the second circuit board. According to the switch assembly provided by the application, the area occupied by the power conversion module is small, the space utilization rate inside the first shell is improved, and the miniaturization development of the switch assembly is facilitated.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, and more particularly to a switching assembly. Background Technology

[0002] Switching assemblies control the on / off state of circuits, ensuring circuit safety and reducing the possibility of faults escalating. A switching assembly includes a matching switch body and a power conversion module. The switch body can be a circuit breaker, relay, or other type of switch.

[0003] The switch body includes a microcontroller unit, and the power conversion module can convert the current in the circuit into the low-voltage current required by the microcontroller unit.

[0004] The existing power conversion module structure results in a large size of the switching components, which is not conducive to the miniaturization of the switching components. Utility Model Content

[0005] This application provides a switching assembly. By configuring a power conversion module including a first circuit board and a second circuit board, and arranging the projections of the first and second circuit boards along the direction from the first to the second circuit board, the power conversion module occupies a smaller area. Furthermore, installing the power conversion module within a first housing allows for more compact installation of internal components, improving the space utilization within the first housing and facilitating the miniaturization of the switching assembly.

[0006] In a first aspect, this application provides a switch assembly. The switch assembly includes a switch body and a power conversion module. The switch body includes a first housing, and the power conversion module is installed inside the first housing. The power conversion module includes a second housing, a first circuit board, and a second circuit board. The second housing has a mounting cavity. The first circuit board is fixedly installed into the mounting cavity. The second circuit board is fixedly installed into the mounting cavity, and the second circuit board is spaced apart from the first circuit board and electrically connected to the first circuit board. The second circuit board is located closer to the bottom wall of the second housing than the first circuit board. Along the direction from the first circuit board to the second circuit board, the projections of the first circuit board and the second circuit board substantially coincide.

[0007] In this application example, the second housing provides mounting space for both the first and second circuit boards. Compared to the prior art where the circuit board is a single circuit board, in this application example, the circuit board configuration includes both a first and a second circuit board. Furthermore, along the direction from the first to the second circuit board, the projections of the first and second circuit boards substantially overlap, resulting in a smaller area occupied by the power conversion module. Since the power conversion module is installed within the first housing, its smaller area allows for more compact installation of components within the first housing, improving space utilization and facilitating the miniaturization of the switching assembly.

[0008] Furthermore, compared to installing the power conversion module outside the first housing, which requires space outside the first housing, and requiring operators to connect internal components of the switch body to the power conversion module, the main circuit to the power conversion module, and the power supply line to the switch body during installation, making the switch assembly installation process cumbersome and costly, this application installs the power conversion module inside the first housing. Because the power conversion module is inside the first housing, operators can avoid directly connecting the power conversion module to the switch body; only the power supply line needs to be connected to the switch body. This simplifies the switch assembly installation process and reduces installation costs.

[0009] In some possible implementations, the bottom wall of the second housing is provided with a mounting post along the direction from the first circuit board toward the second circuit board. The mounting post includes a first mounting portion and a second mounting portion spaced apart, with the second mounting portion positioned closer to the bottom wall of the housing than the first mounting portion. The first circuit board is provided with a first mounting structure connected to the first mounting portion. The second circuit board is provided with a second mounting structure connected to the second mounting portion.

[0010] In this example, along the direction from the first circuit board to the second circuit board, the mounting post is provided with a first mounting portion and a second mounting portion at intervals. The first circuit board has a first mounting structure. The first mounting structure and the first mounting portion cooperate to achieve the cooperation between the first circuit board and the mounting post, so that the mounting post can provide support for the first circuit board and complete the cooperation between the first circuit board and the mounting post. Furthermore, since the mounting post is located on the bottom wall of the second housing, the cooperation between the first circuit board and the mounting post can achieve the cooperation between the first circuit board and the second housing.

[0011] The second circuit board is provided with a second mounting structure. The second connecting structure and the second mounting part cooperate to achieve the mating of the second circuit board and the mounting post. Since the mounting post is located on the bottom wall of the second housing, the mating of the second circuit board and the mounting post achieves the mating of the second circuit board and the second housing.

[0012] In some possible implementations, the end of the mounting post facing away from the bottom wall has a first mounting hole, which is a first mounting part. The first mounting structure is a second mounting hole. The power conversion module also includes a connector that passes through the second mounting hole and extends into the first mounting hole to connect the first circuit board to the mounting post. Alternatively, the first mounting part is a mounting protrusion on the side wall of the mounting post, and the first mounting structure is a third mounting hole through which the mounting post passes. The first circuit board with the third mounting hole is snapped onto the side of the mounting protrusion facing away from the bottom wall.

[0013] In this application example, by setting the first mounting part as the first mounting hole and the first mounting structure as the second mounting hole, and since the first mounting part is located on the mounting post and the first mounting structure is located on the first circuit board, the connector passing through the second mounting hole and extending into the first mounting hole can achieve the connection between the first circuit board and the mounting post. Alternatively, by setting the first mounting part as a mounting protrusion, the mounting protrusion is located on the side wall of the mounting post, and the first circuit board with a third mounting hole can be snapped onto the side of the mounting protrusion facing away from the bottom wall of the second housing, thus achieving the cooperation between the first circuit board and the mounting post.

[0014] In some possible implementations, the second mounting part is the sidewall of the mounting post, and the second mounting structure is a snap-fit ​​groove, with part of the sidewall of the mounting post extending into the snap-fit ​​groove to connect the second circuit board to the mounting post.

[0015] In this application example, since the second mounting part is located on the mounting post, the second mounting structure is located on the second circuit board, and the second mounting part is the side wall of the mounting post, and the second mounting structure is a snap-fit ​​groove, the side wall of part of the mounting post can extend into the snap-fit ​​groove and cooperate with the groove wall of the snap-fit ​​groove, thereby realizing the cooperation between the second circuit board and the mounting post.

[0016] Furthermore, since the mounting post is located inside the second housing and the second circuit board is mounted inside the second housing, the engagement between the mounting post and the housing wall of the second housing can limit the amplitude of the second circuit board's wobbling within the second housing, thereby ensuring the reliability of the power conversion module.

[0017] In some possible implementations, the bottom wall is provided with a limiting protrusion that abuts against the side of the second circuit board facing the bottom wall.

[0018] In this application example, by providing a limiting protrusion on the bottom wall of the second housing, and the limiting protrusion being able to abut against the side of the second circuit board facing the bottom wall, that is, by providing a limiting protrusion, the second circuit board and the bottom wall of the second housing can be spaced apart, thereby reducing the possibility of friction between the second circuit board and the bottom wall of the second housing during the use of the power conversion module, reducing the possibility of damage to the second circuit board caused by the bottom wall of the second housing, and ensuring the reliability of the power conversion module.

[0019] In some possible implementations, the mounting post is spaced apart from the side wall of the second housing, and a reinforcing rib is provided between the mounting post and at least one side wall, with one side of the reinforcing rib connected to the side wall and the other side of the reinforcing rib connected to the mounting post.

[0020] In this application example, a reinforcing rib is provided between the mounting post and at least one side wall of the second housing, with one side of the reinforcing rib connected to the side wall and the other side of the reinforcing rib connected to the mounting post. This allows the reinforcing rib to provide force to the mounting post, reducing the amplitude of the mounting post's sway relative to the second housing, thereby reducing the amplitude of the sway between the first circuit board and the second circuit board within the second housing and ensuring the reliability of the power conversion module.

[0021] In some possible implementations, the first housing includes a connected base and a face shield, which cooperate to form a receiving cavity, into which the power conversion module is installed, and the second housing is detachably connected to the base.

[0022] In this example, the base and the faceplate cooperate to form a receiving cavity, which provides installation space for the power conversion module. By installing the power conversion module inside the receiving cavity, it is possible to avoid installing the power conversion module on the outside of the first housing, thereby improving the space utilization inside the first housing and facilitating the miniaturization of the switching assembly.

[0023] In addition, the second housing is detachably connected to the base, which facilitates separate inspection and maintenance of the switch body and the power conversion module during the use of the switch assembly, reducing the maintenance cost of the switch assembly.

[0024] In some possible implementations, a shock-absorbing washer is provided between the second housing and the base.

[0025] In this application example, by setting a shock-absorbing washer between the second housing and the base, the shock-absorbing washer can absorb at least part of the vibration generated by the switch body during use, reduce the vibration transmitted from the switch body to the power conversion module, thereby reducing the amplitude of the shaking of the first circuit board and the second circuit board inside the second housing, and ensuring the reliability of the power conversion module and the switch assembly.

[0026] In some possible implementations, the switching assembly also includes a microcontroller and a secondary circuit terminal block, which are mounted in a base. The base has a through hole on the side facing the power conversion module so that one end of a first wire is connected to a first circuit board, the other end of the first wire passes through the through hole and is connected to the microcontroller, one end of a second wire is connected to a second circuit board, and the second end of the second wire passes through the through hole and is connected to the secondary circuit terminal block.

[0027] In this example, by providing a through hole in the base, the first wire can be easily passed through the hole and extended directly into the base to achieve electrical connection between the first circuit board and the microcontroller unit. This avoids the need for a long first wire and reduces the manufacturing cost of the power conversion module. Similarly, by providing a through hole in the base, the second wire can be easily passed through the hole and extended directly into the base to achieve electrical connection between the second circuit board and the secondary circuit terminals. This avoids the need for a long second wire and reduces the manufacturing cost of the power conversion module.

[0028] In some possible implementations, the first circuit board has a wiring groove on the side wall near the second housing, through which the first wire passes, and the wiring groove is connected to the through hole.

[0029] In this application example, the wiring groove provided on the first circuit board cooperates with the side wall of the second housing to provide wiring space for the first wire, reducing the possibility of wear on the first wire caused by the side wall of the first circuit board and the second housing. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a switch assembly provided as an example in this application.

[0031] Figure 2 This is a schematic diagram illustrating the interaction structure between the switch body and the power conversion module, as provided in this application example.

[0032] Figure 3 This is a schematic diagram of a power conversion module provided as an example in this application.

[0033] Figure 4 An exploded view of a power conversion module provided as an example in this application.

[0034] Figure 5 This is a schematic diagram illustrating the mating structure of a first circuit board and a second circuit board, as provided in this application example.

[0035] Figure 6 A schematic diagram of a second housing provided as an example of this application from a first-view perspective.

[0036] Figure 7A schematic diagram of the structure of a second housing provided as an example of this application from a second perspective.

[0037] Figure 8 This is a schematic diagram of the structure of a base provided as an example of this application.

[0038] Explanation of reference numerals in the attached figures:

[0039] 100. Switch assembly; 200. Power conversion module; 210. Second housing; 211. Mounting post; 2111. First mounting part; 220. First circuit board; 221. First mounting structure; 222. Wiring trough; 230. Second circuit board; 231. Second mounting structure; 240. Limiting protrusion; 250. Reinforcing rib; 260. Shock-absorbing washer; 300. Switch body; 310. First housing; 311. Base; 3111. Perforation; 312. Faceplate; 320. Secondary circuit terminal block; 330. Microcontroller unit. Detailed Implementation

[0040] To make the purpose, technical solutions, and advantages of the examples in this application clearer, the technical solutions in the examples of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described examples are only a part of the examples in this application, not all of them. Based on the examples in this application, all other examples obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terms used herein in the description of the application are for the purpose of describing particular examples only and are not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the description, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0042] In this document, the term "example" means that a particular feature, structure, or characteristic described in connection with the example may be included in at least one example of this application. The appearance of the phrase "example" in various parts of the specification does not necessarily refer to the same example, nor is it a separate or alternative example mutually exclusive with other examples. It will be explicitly and implicitly understood by those skilled in the art that the examples described herein can be combined with other examples.

[0043] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist simultaneously, or B exists. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0044] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of the switching component of this application.

[0045] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0046] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0047] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by a partition, such as a connection fixed by screws, bolts, or other partitions; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0048] To enable those skilled in the art to better understand the present application, the switching component provided in the example of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0049] Figure 1 This application provides a schematic diagram of the structure of a switch assembly. Figure 2 This is a schematic diagram illustrating the interaction structure between the switch body and the power conversion module, as provided in this application. Figure 3 This application provides a schematic diagram of the structure of a power conversion module as an example. Figure 4 An exploded view of a power conversion module provided as an example in this application.

[0050] For example, this application provides a switch component. Please refer to... Figures 1-4The switch assembly 100 includes a switch body 300 and a power conversion module 200. The switch body 300 includes a first housing 310, and the power conversion module 200 is installed inside the first housing 310. The power conversion module 200 includes a second housing 210, a first circuit board 220, and a second circuit board 230. The second housing 210 has a mounting cavity. The first circuit board 220 is fixedly installed into the mounting cavity. The second circuit board 230 is fixedly installed into the mounting cavity. The second circuit board 230 is spaced apart from the first circuit board 220 and is electrically connected to the first circuit board 220. The second circuit board 230 is located closer to the bottom wall of the second housing 210 than the first circuit board 220. Along the direction from the first circuit board 220 to the second circuit board 230, the projections of the first circuit board 220 and the second circuit board 230 substantially coincide.

[0051] The switch body 300 can be a circuit breaker, relay, or other switch capable of controlling the opening and closing of a circuit. This application example only uses a circuit breaker as an example; specifically, it could be a universal circuit breaker.

[0052] The switch body 300 includes a first housing 310, which is formed by the cooperation of multiple sub-housings. The power conversion module 200 is connected to the housing wall of the first housing 310 by screws, pins or other connectors, and the power conversion module 200 is electrically connected to the microcontroller unit 330 inside the switch body 300 by wires or other conductive parts.

[0053] The power conversion module 200 includes a second housing 210, which includes a mounting cavity. The opening of the mounting cavity faces the first housing 310, and the housing wall of the first housing 310 can directly block the opening of the mounting cavity. The second housing 210 may also include a baffle that blocks the opening of the mounting cavity and is then connected to the first housing 310.

[0054] The first circuit board 220 can be directly or indirectly electrically connected to the main circuit. At this time, the second circuit board 230 is electrically connected to the components inside the switch body 300. The cooperation of the first circuit board 220 and the second circuit board 230 can convert the current in the main circuit into the current required for the operation of the components inside the switch body 300, thereby reducing the possibility of damage to the components inside the switch body 300, ensuring the reliability of the components inside the switch body 300, and thus ensuring the reliability of the switch assembly 100.

[0055] Alternatively, the second circuit board 230 may be directly or indirectly electrically connected to the main circuit, and the first circuit board 220 may be electrically connected to the components inside the switch body 300. This application example does not limit the specific connection relationship between the main circuit, the first circuit board 220, the second circuit board 230, and the components inside the switch body 300.

[0056] The first circuit board 220 includes a first circuit board and electronic components mounted on the first circuit board. The second circuit board 230 includes a second circuit board and electronic components mounted on the second circuit board. The electronic components mounted on the first circuit board and the electronic components mounted on the second circuit board have the same orientation. For example, the electronic components on the first circuit board are positioned facing the opening of the mounting cavity, and the electronic components on the second circuit board are also positioned facing the opening of the mounting cavity. Alternatively, the electronic components on the first circuit board are positioned away from the opening of the mounting cavity, and the electronic components on the second circuit board are also positioned away from the opening of the mounting cavity. By having the electronic components on both circuit boards have the same orientation, compared to having the electronic components on the two circuit boards facing each other, a larger electrical clearance can be achieved between the two circuit boards, ensuring the reliability of the power conversion module 200.

[0057] Along the direction from the first circuit board 220 to the second circuit board 230, the projections of the first circuit board 220 and the second circuit board 230 substantially coincide. This can be understood as follows: along the direction from the first circuit board 220 to the second circuit board 230, the projections of the first circuit board 220 and the second circuit board 230 completely coincide; or, a portion of the projection of the first circuit board 220 lies outside the projection of the second circuit board 230; or, a portion of the projection of the second circuit board 230 lies outside the projection range of the first circuit board 220. The projected areas of the first circuit board 220 and the second circuit board 230 can be equal, or they can be unequal.

[0058] In this example, the second housing 210 provides mounting space for the first circuit board 220 and the second circuit board 230. Compared to the prior art where the circuit board is a single circuit board, in this example, the circuit boards include the first circuit board 220 and the second circuit board 230, and the projections of the first circuit board 220 and the second circuit board 230 substantially overlap along the direction from the first circuit board 220 to the second circuit board 230, which allows the power conversion module 200 to occupy a smaller area. Furthermore, since the power conversion module 200 is installed inside the first housing 310, the smaller area occupied by the power conversion module 200 allows for a more compact installation of the components inside the first housing 310, improving the space utilization rate inside the first housing 310.

[0059] Furthermore, compared to installing the power conversion module 200 outside the first housing 310, which requires space outside the first housing 310, and requiring the operator to connect the internal components of the switch body 300 to the power conversion module 200, the main circuit to the power conversion module 200, and the power supply line to the switch body 300 during installation, the installation process of the switch assembly 100 is more cumbersome and costly. This application installs the power conversion module 200 inside the first housing 310. Since the power conversion module 200 is installed inside the first housing 310, the operator can avoid directly connecting the power conversion module 200 to the switch body 300; only the power supply line needs to be connected to the switch body 300. This simplifies the installation process of the switch assembly 100 and reduces installation costs.

[0060] Based on the switch component 100 provided in the above example, Figure 5 This is a schematic diagram illustrating the mating structure of a first circuit board and a second circuit board, as an example of this application. Figure 6 A schematic diagram of the structure of a second housing provided as an example in this application from a first-view perspective is shown below. Figure 5 and Figure 6 The bottom wall of the second housing 210 is provided with a mounting post 211, which extends from the first circuit board 220 toward the second circuit board 230. The mounting post 211 includes a first mounting portion 2111 and a second mounting portion spaced apart, with the second mounting portion positioned closer to the bottom wall of the housing than the first mounting portion 2111. The first circuit board 220 is provided with a first mounting structure 221, which is connected to the first mounting portion 2111. The second circuit board 230 is provided with a second mounting structure 231, which is connected to the second mounting portion.

[0061] The bottom wall of the second housing 210 refers to the housing wall of the second housing 210 that is away from the opening of the mounting cavity.

[0062] The mounting post 211 can be a prism, cylinder, or other columnar structure. Along the direction from the first circuit board 220 to the second circuit board 230, the cross-section of the mounting post 211 can remain constant, or the cross-section can gradually increase; this application example does not impose specific limitations in this regard. By setting the cross-section of the mounting post 211 to gradually increase along the direction from the first circuit board 220 to the second circuit board 230, the amplitude of the mounting post 211's wobbling within the second housing 210 can be reduced, thereby reducing the amplitude of the wobbling of the first circuit board 220 and the second circuit board 230 relative to the second housing 210, ensuring the reliability of the power conversion module 200.

[0063] There may be only one mounting post 211, or there may be multiple mounting posts 211 spaced apart. Along the direction from the first circuit board 220 to the second circuit board 230, the height of the mounting post 211 is less than or equal to the height of the second housing 210. As long as the first circuit board 220 and the second circuit board 230 are mounted to the second housing 210 via the mounting post 211, the first circuit board 220 is flush with the second housing 210 or the first circuit board 220 is lower than the second housing 210, so as to reduce the possibility of damage to the first circuit board 220 during the assembly of the power conversion module 200 and the first housing 310.

[0064] Along the direction from the first circuit board 220 toward the second circuit board 230, the mounting post 211 includes a first mounting portion 2111 and a second mounting portion spaced apart. The specific structure of the first mounting portion 2111 and the specific structure of the second mounting portion may be the same or different. For example, the first mounting portion 2111 may be a hole-like structure, a protrusion structure, etc. The second mounting portion may be a protrusion structure, etc.

[0065] The first circuit board 220 is provided with a first mounting structure 221 that mates with the first mounting portion 2111. The first mounting structure 221 can be a groove-shaped structure, a hole-shaped structure, a protrusion-shaped structure, etc. The second circuit board 230 is provided with a second mounting structure 231 that mates with the second mounting portion. The second mounting structure 231 can be a groove-shaped structure, a hole-shaped structure, etc. The specific examples of the first mounting portion 2111, the second mounting portion, the first mounting structure 221, and the second mounting structure 231 in this application are not limited, as long as the first mounting portion and the first mounting structure 221 can achieve the mating of the mounting post 211 and the first circuit board 220, and the second mounting portion and the second mounting structure 231 can achieve the connection of the mounting post 211 and the second circuit board 230.

[0066] Since the second circuit board 230 is closer to the bottom wall of the second housing 210, during the assembly process of the first circuit board 220, the second circuit board 230 and the mounting post 211 are assembled first, and then the first circuit board 220 and the mounting post 211 are assembled.

[0067] In this example, along the direction from the first circuit board 220 toward the second circuit board 230, mounting posts 211 are provided with a first mounting portion 2111 and a second mounting portion spaced apart. The first circuit board 220 is provided with a first mounting structure 221. The first mounting structure 221 and the first mounting portion 2111 cooperate to achieve the cooperation between the first circuit board 220 and the mounting post 211, so that the mounting post 211 can provide support for the first circuit board 220, thus completing the cooperation between the first circuit board 220 and the mounting post 211. Furthermore, since the mounting post 211 is located on the bottom wall of the second housing 210, the cooperation between the first circuit board 220 and the mounting post 211 can achieve the cooperation between the first circuit board 220 and the second housing 210.

[0068] The second circuit board 230 is provided with a second mounting structure 231. The second circuit board 230 and the mounting post 211 can be mated through the cooperation of the second connecting structure and the second mounting part. Since the mounting post 211 is located on the bottom wall of the second housing 210, the second circuit board 230 and the second housing 210 can be mated through the cooperation of the second circuit board 230 and the mounting post 211.

[0069] Next, an exemplary description will be given of the way the circuit board mates with the mounting post 211.

[0070] For example, please refer to Figure 5 and Figure 6 The mounting post 211 has a first mounting hole at its end facing away from the bottom wall. The first mounting hole is a first mounting part 2111, and the first mounting structure 221 is a second mounting hole. The power conversion module 200 also includes a connector that passes through the second mounting hole and extends into the first mounting hole to connect the second circuit board 230 and the mounting post 211. Alternatively, the first mounting part is a mounting protrusion on the side wall of the mounting post 211, and the first mounting structure 221 is a third mounting hole (not shown in the figure). The third mounting hole allows the mounting post 211 to pass through, and the first circuit board 220 with the third mounting hole is snapped onto the side of the mounting protrusion facing away from the bottom wall to connect the first circuit board 220 and the mounting post 211.

[0071] When the first mounting portion 2111 is the first mounting hole and the first mounting structure 221 is the second mounting hole, both the first and second mounting holes can be plain holes, threaded holes, or the first mounting hole can be a threaded hole and the second mounting hole a plain hole. When at least the first mounting hole is a threaded hole, the connector can be a screw, bolt, or other threaded component. The threaded component passes through the second mounting hole, and a portion of the threaded component extends through the first mounting hole into the mounting post 211, connecting threadedly to the mounting post 211. When both the first and second mounting holes are plain holes, the connector can be a blind rivet or other connector. The blind rivet can pass through the second mounting hole, and a portion of the blind rivet extends through the first mounting hole into the mounting post 211, connecting to the mounting post 211.

[0072] When the first mounting part is a mounting protrusion and the first mounting structure 221 is a third mounting hole, the mounting protrusion can be a fan-shaped protrusion, an annular protrusion, a rectangular protrusion, or other shaped protrusion structure provided on the side wall of the mounting post 211. The first mounting structure 221 is the third mounting hole, and the shape of the third mounting hole is adapted to the shape of the mounting post 211. The third mounting hole can also be an irregularly shaped hole, as long as it is ensured that the mounting protrusion cannot pass through the third mounting hole, so that the first circuit board 220 with the third mounting hole can be snapped onto the side of the mounting protrusion facing away from the bottom wall of the second housing.

[0073] In this application example, by setting the first mounting portion 2111 as the first mounting hole and the first mounting structure 221 as the second mounting hole, and since the first mounting portion 2111 is located on the mounting post 211 and the first mounting structure 221 is located on the first circuit board 220, the connector passing through the second mounting hole and extending into the first mounting hole can achieve the connection between the first circuit board 220 and the mounting post 211. Alternatively, by setting the first mounting portion 2111 as a mounting protrusion, the mounting protrusion is located on the side wall of the mounting post 211, and the first circuit board 220 with a third mounting hole can be snapped onto the side of the mounting protrusion facing away from the bottom wall of the second housing, thus achieving the cooperation between the first circuit board 220 and the mounting post 211.

[0074] Please refer to Figure 5 and Figure 6 Regardless of whether the first mounting part 2111 is set as the first mounting hole or the mounting protrusion, the second mounting part can be the side wall of the mounting post 211, and the second mounting structure 231 is a snap-fit ​​groove, with part of the side wall of the mounting post 211 extending into the snap-fit ​​groove.

[0075] The second mounting portion can be the side wall of the mounting post 211. Since the second circuit board 230 is located closer to the bottom wall of the second housing 210 than the first circuit board 220, the second mounting portion can be the side wall of the mounting post 211 near the bottom wall of the second housing.

[0076] The second mounting structure 231 is a snap-fit ​​groove, which can be a U-shaped groove, an Ω-shaped groove, or other shaped groove structure, as long as the sidewall of the mounting post 211 and the groove structure can fit together to allow the second circuit board 230 to mate with the mounting post 211. When multiple mounting posts 211 are spaced apart, the openings of different snap-fit ​​grooves face different directions, so that different snap-fit ​​grooves, when mated with their corresponding mounting posts 211, can limit the mating of the second circuit board 230 with the mounting post 211 from different directions, ensuring the assembly reliability of the second circuit board 230 and the mounting post 211 and reducing the amplitude of the second circuit board 230's wobbling relative to the mounting post 211.

[0077] In this application example, since the second mounting part is provided on the mounting post 211 and the second mounting structure 231 is provided on the second circuit board 230, and the second mounting part is the side wall of the mounting post 211 and the second mounting structure 231 is a snap-fit ​​groove, a portion of the side wall of the mounting post 211 can extend into the snap-fit ​​groove and cooperate with the groove wall of the snap-fit ​​groove, thereby realizing the cooperation between the second circuit board 230 and the mounting post 211.

[0078] Furthermore, since the mounting post 211 is located inside the second housing 210 and the second circuit board 230 is mounted inside the second housing 210, the mounting post 211 and the housing wall of the second housing 210 cooperate to limit the amplitude of the second circuit board 230 shaking inside the second housing 210, thereby ensuring the reliability of the power conversion module 200.

[0079] Based on the switch assembly 100 provided in the above example, a stop structure (not shown in the figure) is connected to the side of the mounting post 211 away from the bottom wall of the second housing. The stop structure can be a flat structure or a column structure, as long as the stop structure can be connected to the side of the first circuit board 220 away from the bottom wall of the second housing, thereby reducing the possibility of the first circuit board 220 separating from the mounting post 211.

[0080] Based on the switch component 100 provided in the above example, Figure 6 A schematic diagram of the structure of a second housing provided as an example in this application from a first-view perspective. Figure 7 A schematic diagram of the second housing provided as an example in this application from a second-view perspective is shown below. Figures 4-7 The bottom wall is provided with a limiting protrusion 240, which abuts against the side of the second circuit board 230 facing the bottom wall.

[0081] The limiting protrusion 240 can be spaced apart from the mounting post 211, or it can be integrally formed with the mounting post 211. The limiting protrusion 240 can be a raised columnar structure, a prismatic structure, etc. When the limiting protrusion 240 is integrally formed with the mounting post 211, the limiting protrusion 240 can be a fan-shaped protrusion, an annular protrusion, a rectangular protrusion, or other shaped protrusion structure provided on the side wall of the mounting post 211.

[0082] The limiting protrusion 240 can be integrally formed with the second housing 210, and the limiting protrusion 240 can also be connected to the second housing 210 by means of plugging or other methods.

[0083] In this application example, by providing a limiting protrusion 240 on the bottom wall of the second housing 210, and the limiting protrusion 240 being able to abut against the side of the second circuit board 230 facing the bottom wall, that is, by providing the limiting protrusion 240, the second circuit board 230 and the bottom wall of the second housing 210 can be spaced apart, thereby reducing the possibility of friction between the second circuit board 230 and the bottom wall of the second housing 210 during the use of the power conversion module 200, reducing the possibility of the bottom wall of the second housing 210 causing damage to the second circuit board 230, and ensuring the reliability of the power conversion module 200.

[0084] Based on the switch component 100 provided in the above example, please refer to Figure 6 and Figure 7 The mounting post 211 is spaced apart from the side wall of the second housing 210. A reinforcing rib 250 is provided between the mounting post 211 and at least one side wall. One side of the reinforcing rib 250 is connected to the side wall, and the other side of the reinforcing rib 250 is connected to the mounting post 211.

[0085] There may be one or more reinforcing ribs 250. A mounting post 211 may be connected to one or more reinforcing ribs 250. This application example does not impose specific limitations on this.

[0086] In this application example, a reinforcing rib 250 is provided between the mounting post 211 and at least one side wall of the second housing 210, with one side of the reinforcing rib 250 connected to the side wall and the other side of the reinforcing rib 250 connected to the mounting post 211. This allows the reinforcing rib 250 to provide force to the mounting post 211, reducing the amplitude of the shaking of the mounting post 211 relative to the second housing 210, thereby reducing the amplitude of the shaking of the first circuit board 220 and the second circuit board 230 within the second housing 210, and ensuring the reliability of the power conversion module 200.

[0087] Based on the switch component 100 provided in the above example, please refer to Figure 1 and Figure 2The first housing 310 includes a base 311 and a face mask 312 connected to each other. The base 311 and the face mask 312 cooperate to form a receiving cavity. The power conversion module 200 is installed in the receiving cavity, and the second housing 210 is detachably connected to the base 311.

[0088] The base 311 and the face mask 312 can be connected by means of snap-fit ​​connection, threaded connection, etc. The second housing 210 is detachably connected to the base 311 by means of threaded connection, pin connection, etc.

[0089] In this example, the base 311 and the faceplate 312 cooperate to form a receiving cavity, which can provide installation space for the power conversion module 200. By setting the power conversion module 200 to be installed in the receiving cavity, the power conversion module 200 can be avoided from being installed on the outside of the first housing 310, thereby improving the space utilization inside the first housing 310 and facilitating the miniaturization of the switch assembly 100.

[0090] In addition, the second housing 210 is detachably connected to the base 311, which facilitates separate inspection and maintenance of the switch body 300 and the power conversion module 200 during the use of the switch assembly 100, thereby reducing the maintenance cost of the switch assembly 100.

[0091] Based on the switch component 100 provided in the above example, please refer to Figure 2 and Figure 3 A shock-absorbing washer 260 is provided between the second housing 210 and the base 311.

[0092] Multiple shock-absorbing washers 260 can be provided, or only one shock-absorbing washer 260 can be provided.

[0093] When the second housing 210 is connected to the base 311 via screws or other threaded components, the number of damping washers 260 is equal to the number of threaded components, and there is a one-to-one correspondence between the damping washers 260 and the threaded components. A single threaded component can pass through the second housing 210 and the damping washer 260, and then extend into the base 311, thus achieving the fit between the second housing 210, the damping washer 260, and the base 311.

[0094] A damping washer 260 can also be provided. In this case, the damping washer 260 has multiple through holes, the number of which is equal to the number of threaded parts, and the through holes correspond one-to-one with the threaded parts. A threaded part can pass through the second housing 210 and the through hole, and then extend into the base 311 to achieve the fit between the second housing 210, the damping washer 260, and the base 311.

[0095] In this application example, by providing a shock-absorbing washer 260 between the second housing 210 and the base 311, the shock-absorbing washer 260 can absorb at least part of the vibration generated by the switch body 300 during use, reduce the vibration transmitted from the switch body 300 to the power conversion module 200, and thus reduce the amplitude of the shaking of the first circuit board 220 and the second circuit board 230 inside the second housing 210, ensuring the reliability of the power conversion module 200 and the switch assembly 100.

[0096] Based on the switch component 100 provided in the above example, please refer to Figures 1-4 The switching assembly 100 also includes a microcontroller unit 330 and a secondary circuit terminal block 320. The microcontroller unit 330 is mounted inside the base 311, and the secondary circuit terminal block 320 is mounted to the first housing 310. The base 311 has a through hole 3111 on the side facing the power conversion module 200, so that one end of the first wire is connected to the first circuit board 220, the other end of the first wire passes through the through hole 3111 and is connected to the microcontroller unit 330, one end of the second wire is connected to the second circuit board 230, and the second end of the second wire passes through the through hole 3111 and is connected to the secondary circuit terminal block 320.

[0097] The first housing 310 is provided with wiring holes, and secondary circuit wiring terminals 320 are installed in the first housing 310. Some of the secondary circuit wiring terminals 320 extend from the wiring holes into the first housing 310, which facilitates the electrical connection between the secondary circuit wiring terminals 320 and the main circuit.

[0098] The components installed inside the first housing 310 mentioned above include the microcontroller unit 330. Secondary circuit terminals 320 are installed on the outside of the first housing 310 to facilitate wiring, inspection, testing, and maintenance of the secondary circuit. The secondary circuit includes components such as the microcontroller unit 330, current transformers, and trip coils. In this example, it is sufficient to ensure that the power conversion module 200 is installed inside the first housing 310 and between the main circuit and the microcontroller unit 330.

[0099] The microcontroller unit 330 is installed inside the base 311, specifically on the side of the base 311 facing away from the power conversion module 200. A through-hole 3111 is provided on the side facing the power conversion module 200; the through-hole 3111 can be a rectangular hole, a circular hole, or a hole of other shapes. One end of a first wire can be connected to the first circuit board 220, and the other end of the first wire passes through the through-hole 3111 and is electrically connected to the microcontroller unit 330. The first wire specifically includes a first input wire and a first output wire. One end of a second wire is electrically connected to the second circuit board 230, and the other end of the second wire passes through the through-hole 3111 and is electrically connected to the secondary circuit terminal 320. The second wire specifically includes a second input wire and a second output wire. This application example does not elaborate on the specific connection methods of the first input wire, the first output wire, the second input wire, and the second output wire.

[0100] The first circuit board 220 is electrically connected to the microcontroller via a first wire. The second circuit board 230 is electrically connected to the secondary circuit terminal 320 via a second wire. The first circuit board 220 and the second circuit board 230 are electrically connected via wires, board-to-board connectors, or other conductive components.

[0101] Current flows through the main circuit, enters the second circuit board 230 via the second incoming line electrically connected to the secondary circuit terminal 320, and then enters the first circuit board 220. Through the cooperation of the first circuit board 220 and the second circuit board 230, the high-voltage current (e.g., AC230V / AC400V) flowing from the main circuit is converted into a low-voltage current (e.g., DC24V) capable of providing operating current to the microcontroller unit 330. The current then enters the microcontroller unit via the first incoming line, providing operating current for the microcontroller unit. Finally, it enters the first circuit board 220 via the first outgoing line, reaches the second circuit board 230, and then enters the secondary circuit terminal 320 via the second outgoing line, returning to the main circuit.

[0102] Alternatively, the first circuit board 220 is electrically connected to the main circuit via the secondary circuit terminal 320, and the second circuit board 230 is electrically connected to the microcontroller unit 330, providing operating current to the microcontroller unit 330. This application example does not impose specific limitations in this regard.

[0103] In this application example, by providing a through hole 3111 in the base 311, the first wire can be easily passed through the through hole 3111, allowing the first wire to directly pass through the base 311 and extend into the interior of the base 311, thus achieving electrical connection between the first circuit board 220 and the microcontroller unit 330. This avoids the need for a long first wire and reduces the manufacturing cost of the power conversion module 200. Similarly, by providing a through hole 3111 in the base 311, the second wire can be easily passed through the through hole 3111, allowing the second wire to directly pass through the base 311 and extend into the interior of the base 311, thus achieving electrical connection between the second circuit board 230 and the secondary circuit terminal block 320. This avoids the need for a long second wire and reduces the manufacturing cost of the power conversion module 200.

[0104] Based on the switch component 100 provided in the above example, Figure 8 Please refer to the structural schematic diagram of a base provided as an example in this application. Figures 1-4 and Figure 8 The first circuit board 220 has a wiring groove 222 on the side wall near the second housing 210. The wiring groove 222 is for the first wire to pass through, and the wiring groove 222 is connected to the through hole 3111.

[0105] There is only one wiring channel 222. When the second circuit board 230 has a snap-fit ​​slot, the wiring channel 222 is positioned corresponding to the snap-fit ​​slot. This facilitates the first wire to pass through the wiring channel 222 and the snap-fit ​​slot, and then extend into the base 311 through the through hole 3111 to connect with the microcontroller unit 330 inside the base 311.

[0106] Even if the second circuit board 230 does not have a snap-fit ​​slot, the second circuit board 230 may also have a wiring slot 222, and the wiring slot 222 on the second circuit board 230 corresponds to the wiring slot 222 on the first circuit board 220 in terms of its position.

[0107] In this application example, the wiring groove 222 provided on the first circuit board 220 cooperates with the side wall of the second housing 210 to provide wiring space for the first wire, reducing the possibility of wear on the first wire caused by the side wall of the first circuit board 220 and the second housing 210.

[0108] Finally, it should be noted that the above embodiments are merely specific implementations of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A switching assembly, characterized in that, The switch body includes a switch body and a power conversion module. The switch body includes a first housing, and the power conversion module is installed inside the first housing. The power conversion module includes: The second housing has a mounting cavity; The first circuit board is fixedly installed into the mounting cavity; The second circuit board is fixedly installed in the mounting cavity. The second circuit board is spaced apart from the first circuit board and is electrically connected to the first circuit board. The second circuit board is located closer to the bottom wall of the second housing than the first circuit board. Along the direction from the first circuit board to the second circuit board, the projection of the first circuit board and the projection of the second circuit board substantially coincide.

2. The switching assembly according to claim 1, characterized in that, The bottom wall of the second housing is provided with a mounting post along the direction from the first circuit board toward the second circuit board. The mounting post includes a first mounting part and a second mounting part that are spaced apart. The second mounting part is located closer to the bottom wall of the housing than the first mounting part. The first circuit board is provided with a first mounting structure, and the first mounting structure is connected to the first mounting part; The second circuit board is provided with a second mounting structure, and the second mounting structure is connected to the second mounting part.

3. The switching assembly according to claim 2, characterized in that, The mounting post has a first mounting hole at its end opposite to the bottom wall. This first mounting hole is the first mounting portion, and the first mounting structure is the second mounting hole. The power conversion module also includes a connector that passes through the second mounting hole and extends into the first mounting hole to connect the first circuit board to the mounting post; or... The first mounting part is a mounting protrusion provided on the side wall of the mounting column, and the first mounting structure is a third mounting hole. The third mounting hole is for the mounting column to pass through. The first circuit board with the third mounting hole is snapped onto the side of the mounting protrusion away from the bottom wall to connect the first circuit board and the mounting column.

4. The switching assembly according to claim 3, characterized in that, The second mounting part is the side wall of the mounting post, and the second mounting structure is a snap-fit ​​groove, in which part of the side wall of the mounting post extends into the snap-fit ​​groove to connect the second circuit board and the mounting post.

5. The switching assembly according to any one of claims 1 to 4, characterized in that, The bottom wall is provided with a limiting protrusion, which abuts against the side of the second circuit board facing the bottom wall.

6. The switching assembly according to claim 2, characterized in that, The mounting post is spaced apart from the side wall of the second housing, and a reinforcing rib is provided between the mounting post and at least one of the side walls. One side of the reinforcing rib is connected to the side wall, and the other side of the reinforcing rib is connected to the mounting post.

7. The switching assembly according to claim 1, characterized in that, The first housing includes a base and a face mask connected together. The base and the face mask cooperate to form a receiving cavity. The power conversion module is installed in the receiving cavity. The second housing is detachably connected to the base.

8. The switching assembly according to claim 7, characterized in that, A shock-absorbing washer is provided between the second housing and the base.

9. The switching assembly according to claim 7 or 8, characterized in that, The switching assembly further includes a microcontroller unit and a secondary circuit terminal block. The microcontroller unit is installed inside the base, and the secondary circuit terminal block is installed to the first housing. The base has a through hole on the side facing the power conversion module so that one end of the first wire is connected to the first circuit board, the other end of the first wire passes through the through hole and is connected to the microcontroller unit, one end of the second wire is connected to the second circuit board, and the second end of the second wire passes through the through hole and is connected to the secondary circuit terminal.

10. The switching assembly according to claim 9, characterized in that, The first circuit board has a wiring groove on the side wall near the second housing, through which the first wire passes, and the wiring groove is connected to the through hole.

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