switching device

Abstract

The application discloses a switch device, relates to the technical field of low-voltage electrical appliances, and comprises a shell, a side cover and a circuit board. The shell has a containing cavity, and a mounting hole is arranged in the side wall of the shell. The side cover is detachably mounted in the mounting hole. The circuit board is fixedly arranged on the side of the side cover facing the containing cavity. The side cover and the circuit board are pre-assembled to form an assembly, the assembly is mounted in the mounting hole through the side cover, and the circuit board is positioned in the containing cavity. The switch device provided by the application can improve the utilization rate of the internal space of the shell of the switch device, and is beneficial to the miniaturization and modularization development of the switch device.

Description

Technical Field

[0001] This application relates to the field of low-voltage electrical technology, specifically to a switching device. Background Technology

[0002] In the field of low-voltage electrical appliances, most switching devices are equipped with circuit boards to provide functions such as electrical connection, signal transmission, power management and distribution.

[0003] In existing switching devices, circuit boards and other components are fixedly installed in the internal space of the housing. To avoid interference between other components and the circuit board during assembly, existing switching devices will choose to increase the volume of the housing to provide more installation space. However, this will result in low utilization of the internal space of the housing and will not be conducive to the miniaturization and modularization of the switching device.

[0004] Therefore, there is an urgent need to propose a switching device to solve the problems existing in the prior art. Utility Model Content

[0005] The purpose of this application is to provide a switching device that can improve the utilization rate of the internal space of the switching device housing, which is conducive to the miniaturization and modularization of the switching device.

[0006] This application provides a switching device including a housing, a side cover, and a circuit board. The housing has a receiving cavity, and a mounting hole is provided on the side wall of the housing. The side cover is detachably mounted to the mounting hole. The circuit board is fixedly disposed on the side of the side cover facing the receiving cavity. The side cover and the circuit board are pre-assembled to form an assembly, and the assembly is mounted to the mounting hole through the side cover to position the circuit board within the receiving cavity.

[0007] This embodiment utilizes a modular installation approach, employing a side cover as an intermediate carrier to optimize the spatial layout of the circuit board within the housing. This effectively improves space utilization, making it particularly suitable for miniaturized electronic devices. Furthermore, it simplifies the assembly process, reducing assembly steps and increasing production efficiency. In addition, this structural design facilitates subsequent maintenance; when repair or replacement of the circuit board is required, simply removing the side cover allows for the removal of the entire circuit board assembly, significantly reducing maintenance difficulty. The overall structure ensures installation stability while also balancing ease of assembly and compact space.

[0008] In some examples, the first hole wall of the mounting hole is provided with a first groove, the second hole wall opposite to the first hole wall is provided with a second groove, and the periphery of the side cover is provided with a first boss and a second boss, the first boss being connected to the first groove and the second boss being connected to the second groove.

[0009] The above scheme uses a combination of a first boss embedded in a first groove and a second boss embedded in a second groove to assemble the side cover and the housing. The assembly operation is simple and efficient, and stable installation can be achieved without adding any structure or parts to the housing. This helps to reduce the volume and achieve rapid assembly of the side cover and circuit board assembly.

[0010] In some examples, both the first and second grooves extend along a first direction, the first boss slides into the first groove, and the second boss slides into the second groove, so that the side cover can be slidably installed in or slidably removed from the mounting hole.

[0011] The sliding fit mounting method allows the circuit board and side cover assembly to be smoothly slidably installed into the mounting holes. This improves assembly efficiency, restricts the installation direction of the circuit board, reduces the possibility of interference between the circuit board and other components, and thus improves the utilization of the internal space of the housing. Furthermore, the sliding fit design on both sides ensures the stability and accuracy of the installation process, reducing the possibility of misalignment during installation.

[0012] In some examples, the first bore wall is also provided with a clearance groove, which communicates with the first recess and extends from the first recess toward the side of the first bore wall away from the receiving cavity. The first boss can enter the first recess through the clearance groove and slide in the first recess until it is misaligned with the clearance groove to fix the first boss.

[0013] The design of the clearance groove can provide a channel for the first boss to enter the first groove, so that the side cover can be closed to the mounting hole along the axial direction of the mounting hole. This allows the circuit board to be directly inserted into the receiving cavity through the mounting hole, which can reduce the extra space required for the circuit board assembly process and greatly reduce the possibility of the circuit board interfering with other components during the assembly process, which is conducive to reducing the volume of the housing.

[0014] Furthermore, the first boss is slidable to be misaligned with the clearance groove to serve as the positioning function of the side cover. This method has the advantages of simple structure and easy assembly. Compared with other fixing structures to fix the side cover, this embodiment occupies less space, which is beneficial to reducing the volume of the shell.

[0015] In some examples, there are multiple first bosses and multiple clearance slots, with each first boss corresponding to a different clearance slot.

[0016] By employing multiple first bosses in conjunction with multiple clearance slots, the accuracy of the side cover when installed into the mounting hole can be further improved, so that the circuit board fixed on the side cover can be accurately inserted into the mounting hole, avoiding misalignment or instability during the installation process and improving assembly stability.

[0017] In some examples, a third groove is provided on the third hole wall between the first hole wall and the second hole wall, and a third boss is also provided on the periphery of the side cover, the third boss being able to be inserted into the third groove.

[0018] By designing the mating form of the third groove and the third boss, the mating range between the side cover and the mounting hole can be increased. The side cover simultaneously mates with the first hole wall, the second hole wall, and the third hole wall in the mounting hole, which can not only enhance the assembly stability but also provide a certain sealing effect, thus helping to reduce the possibility of switch device failure.

[0019] In some examples, the housing includes a bottom shell and a top cover, the top cover being connected to the bottom shell and enclosing a mounting hole with a first hole wall, a second hole wall, and a third hole wall.

[0020] The top cover design can provide some clearance during the installation of the side cover into the mounting holes. The top cover can be installed after the side cover is installed, which is conducive to the accurate installation of the side cover and the circuit board. Furthermore, the top cover can further fix the side cover, thereby making the position of the circuit board in the receiving cavity more stable.

[0021] In some examples, the top cover has a fourth groove opposite to the third groove, and the side cover has a fourth boss that can be inserted into the fourth groove.

[0022] By designing the mating form of the fourth groove and the fourth boss, the top cover and the side cover can form an interlocking mating form, which can further increase the mating range between the side cover and the mounting hole. The periphery of the side cover is fully mated to the hole wall of the mounting hole, which can not only meet the stable installation of the side cover and the circuit board on the housing, but also play a certain sealing role, which helps to reduce the possibility of switch device failure.

[0023] In some examples, the side cover has a first fixing part on the side facing the receiving cavity, and the circuit board is fixedly connected to the first fixing part.

[0024] The circuit board is fixed to the side cover at a single point, which not only facilitates assembly, but also significantly reduces the structural space required by traditional multi-fixed-point connections while ensuring a stable connection. This minimizes the overall volume of the assembly, reduces the risk of interference between the circuit board and other components in the housing cavity, and helps to reduce the overall size of the switching device.

[0025] In some examples, the side cover facing the receiving cavity is also provided with a second fixing part, the first fixing part and the second fixing part are arranged diagonally, and the circuit board is also fixedly connected to the second fixing part.

[0026] The circuit board is fixed to the side cover in a diagonal manner, which simplifies the assembly operation while ensuring stable connection and reducing the space occupied by additional fixing structures. This helps to improve the space utilization rate in the cavity while ensuring assembly stability, thereby reducing the volume of the shell. Attached Figure Description

[0027] 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.

[0028] Figure 1 This is a schematic diagram of the overall structure of the switching device provided in the embodiments of this application.

[0029] Figure 2 This is a schematic diagram of the structure of the side cover and circuit board assembly disassembled into the housing according to an embodiment of this application.

[0030] Figure 3 An exploded view of the switching device provided in the embodiments of this application.

[0031] Figure 4 Provided for the embodiments of this application Figure 1 Cross-sectional view at point AA.

[0032] Figure 5 This is a schematic diagram of the side cover and housing mating structure provided in an embodiment of this application.

[0033] Figure 6 Provided for the embodiments of this application Figure 1 Cross-sectional view at point BB.

[0034] Figure 7 Provided for the embodiments of this application Figure 6 A magnified view of point C in the middle.

[0035] Figure 8 This is a schematic diagram of the side cover and circuit board assembly structure provided in an embodiment of this application.

[0036] Explanation of reference numerals in the attached drawings: 100, switch device; 1, housing; 11, receiving cavity; 12, mounting hole; 121, first hole wall; 1211, first groove; 1212, clearance groove; 122, second hole wall; 1221, second groove; 123, third hole wall; 1231, third groove; 13, bottom shell; 14, top cover; 141, fourth groove; 142, limiting ridge; 2, side cover; 21, first boss; 22, second boss; 23, third boss; 24, fourth boss; 25, first fixing part; 26, second fixing part; 27, snap-fit ​​boss; 3, circuit board. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] Common low-voltage electrical switchgear typically includes components such as a housing, circuit board, and actuating mechanism. The circuit board and actuating mechanism are installed inside the housing, which provides support and protection.

[0043] To ensure smooth assembly of components and to prevent interference between circuit boards and other components such as actuating mechanisms during or after assembly, existing switching devices have opted to increase the size of the housing to provide more internal space. However, this is not conducive to the utilization of the internal space of the housing and is not conducive to the miniaturization and modularization of the switching device.

[0044] Based on this, the present application provides a switching device that can improve the utilization rate of the internal space of the switching device housing, which is conducive to the miniaturization and modularization of the switching device.

[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 Figures 1 to 3 This embodiment provides a switching device 100, which includes a housing 1, a side cover 2, and a circuit board 3. The housing 1 has a receiving cavity 11, and the side wall of the housing 1 is provided with a mounting hole 12. The side cover 2 is detachably mounted in the mounting hole 12. The circuit board 3 is fixedly disposed on the side of the side cover 2 facing the receiving cavity 11. The side cover 2 and the circuit board 3 are pre-assembled to form an assembly, and the assembly is mounted to the mounting hole 12 through the side cover 2 so that the circuit board 3 is positioned within the receiving cavity 11.

[0047] The receiving cavity 11 on the housing 1 is used to install the circuit board 3 and other components, and can support, fix and protect the aforementioned components. The mounting hole 12 is configured to provide an assembly interface for the side cover 2.

[0048] The side cover 2 serves as a supporting component, and the circuit board 3 can be pre-fixed on the side of the side cover 2 facing the receiving cavity 11. The two are assembled into a complete assembly before being installed into the mounting hole 12.

[0049] Specifically, refer to Figures 1 to 3The mounting hole 12 is opened on the side wall of the housing 1. In the actual assembly process, other components of the switch device 100 can be installed into the receiving cavity 11 first, and then the assembly consisting of the circuit board 3 and the side cover 2 can be installed into the mounting hole 12, so that the circuit board 3 is in the receiving cavity 11. This pre-assembly method significantly improves the assembly efficiency compared with the traditional method of installing one by one. Moreover, compared with the form of installing the circuit board 3 and other components into the receiving cavity 11 together, this embodiment can avoid the circuit board 3 from interfering with other components, and can minimize the space occupation while ensuring the assembly stability.

[0050] The circuit board 3 is fixedly connected to the side cover 2, which can be achieved through bonding, welding, or fastener connection. The side cover 2 can also be fixedly connected to the mounting hole 12 through bonding, fastener connection, or snap-fit ​​connection, so that the circuit board 3 is accurately and stably fixed at the position corresponding to the mounting hole 12.

[0051] This embodiment adopts a modular installation approach, using the side cover 2 as an intermediate carrier, which optimizes the spatial layout of the circuit board 3 inside the housing 1, effectively improving space utilization. It is particularly suitable for miniaturized electronic devices and can simplify the assembly process, reduce assembly operation steps, and improve production efficiency.

[0052] Furthermore, this structural design facilitates subsequent maintenance. When it is necessary to inspect or replace circuit board 3, the entire circuit board 3 assembly can be removed simply by disassembling the side cover 2, greatly reducing maintenance difficulty. The overall structure ensures installation stability while also taking into account ease of assembly and compact space.

[0053] Reference Figures 2 to 4 In some examples, the first hole wall 121 of the mounting hole 12 is provided with a first groove 1211, and the second hole wall 122 opposite to the first hole wall 121 is provided with a second groove 1221. The side cover 2 is provided with a first boss 21 and a second boss 22 on its periphery. The first boss 21 is connected to the first groove 1211, and the second boss 22 is connected to the second groove 1221.

[0054] The above scheme uses a combination of first boss 21 embedded in first groove 1211 and second boss 22 embedded in second groove 1221 to achieve the assembly of side cover 2 and housing 1. The assembly operation is simple and efficient. Stable installation can be achieved without adding structures or parts to housing 1, which is conducive to reducing volume and realizing the rapid assembly of side cover 2 and circuit board 3 assembly.

[0055] Furthermore, both the first groove 1211 and the second groove 1221 extend along the first direction, the first boss 21 is slidably engaged with the first groove 1211, and the second boss 22 is slidably engaged with the second groove 1221, so that the side cover 2 can be slidably installed in the mounting hole 12 or slidably removed from the mounting hole 12.

[0056] In this embodiment, the mounting hole 12 is a rectangular hole, and the first hole wall 121 and the second hole wall 122 in the mounting hole 12 are... Figure 2 and Figure 3 The two hole walls extend longitudinally and are positioned opposite each other, with the aforementioned first direction being the same as the longitudinal direction.

[0057] The first groove 1211 is formed in the first hole wall 121 and extends longitudinally, and the second groove 1221 is formed in the second hole wall 122 and also extends longitudinally. In this way, the positions of the first groove 1211 and the second groove 1221 are also opposite, that is, the opening of the first groove 1211 is opposite to the opening of the second groove 1221.

[0058] Reference Figures 2 to 4 The side cover 2 has a flat plate structure. A first protrusion 21 is provided on the first side of the side cover 2, and the first side abuts against the first hole wall 121. The first protrusion 21 can slide relative to the first groove 1211. A second protrusion 22 is provided on the second side of the side cover 2. The first side and the second side are two opposite sides of the side cover 2, which correspond exactly to the first hole wall 121 and the second hole wall 122. The second side abuts against the second hole wall 122. The second protrusion 22 can slide relative to the second groove 1221.

[0059] During assembly, the first boss 21 is embedded into the first groove 1211, and the second boss 22 is embedded into the second groove 1221, forming a double-track guide system. This design allows the side cover 2 to slide smoothly into place along a preset installation trajectory, ensuring that the circuit board 3 accurately enters the receiving cavity 11 and is positioned corresponding to the mounting hole 12. Compared to installing the circuit board 3 into the receiving cavity 11 first, this embodiment offers higher installation efficiency for the circuit board 3. Furthermore, the fact that the circuit board 3 slides longitudinally into the receiving cavity 11 during installation helps prevent interference with other components.

[0060] In addition, the mating relationship between the first boss 21 and the first groove 1211, and between the second boss 22 and the second groove 1221, not only provides installation guidance for the side cover 2, but also restricts the displacement of the side cover 2, effectively reducing the possibility of loosening after assembly.

[0061] The sliding fit installation method allows the assembly consisting of circuit board 3 and side cover 2 to be smoothly slidably installed into the mounting hole 12. This not only improves assembly efficiency but also restricts the installation direction of circuit board 3, reducing the possibility of interference between circuit board 3 and other components, thereby improving the utilization of the internal space of housing 1. In addition, the sliding fit design on both sides ensures the stability and accuracy of the installation process, reducing the possibility of misalignment during installation.

[0062] Reference Figures 2 to 5 In some examples, the first bore wall 121 is also provided with a relief groove 1212, which extends from the first recess 1211 toward the side of the first bore wall 121 away from the receiving cavity 11. The first boss 21 can enter the first recess 1211 through the relief groove 1212, and slide in the first recess 1211 until it is misaligned with the relief groove 1212 to fix the first boss 21.

[0063] The design of the clearance groove 1212 can provide a channel for the first boss 21 to enter the first groove 1211, so that the side cover 2 can be closed to the mounting hole 12 along the axial direction of the mounting hole 12. This allows the circuit board 3 to be directly inserted into the receiving cavity 11 through the mounting hole 12, which can reduce the extra space required for the assembly process of the circuit board 3 and greatly reduce the possibility of the circuit board 3 interfering with other components during the assembly process, which is conducive to reducing the volume of the housing 1.

[0064] Among them, reference Figure 2 and Figure 5 The clearance groove 1212 and the mounting hole 12 are formed on the same side wall of the housing 1, and the clearance groove 1212 is located on the side of the first hole wall 121 away from the receiving cavity 11, that is, on the outer side of the side wall of the housing 1. The clearance groove 1212 communicates with the first groove 1211, and the shape and size of the clearance groove 1212 match the shape and size of the first boss 21. In one example, the clearance groove 1212 is designed to be "D" shaped, and the shape of the first boss 21 is also set to be "D". Of course, it can also be set to other shapes such as rectangle or arc.

[0065] In this embodiment, refer to Figure 4 and Figure 5 The longitudinal length of the clearance groove 1212 is less than the longitudinal length of the first groove 1211, and the longitudinal length of the first boss 21 corresponds to the clearance groove 1212. This allows the first boss 21 to slide along the first groove 1211 until it is misaligned with the clearance groove 1212 after entering the first groove 1211 via the clearance groove 1212, thus preventing the first boss 21 from dislodging from the clearance groove 1212. The longitudinal length of the second boss 22 can match the second groove 1221, or the second boss 22 can be divided into multiple segments and inserted into the second groove 1221.

[0066] The first boss 21 is slidable to be misaligned with the clearance groove 1212 to serve as the positioning function of the side cover 2. It has the characteristics of simple structure and easy assembly. Compared with setting other fixing structures to fix the side cover 2, this embodiment occupies less space, which is beneficial to reducing the volume of the shell 1.

[0067] During assembly, the side cover 2 is fitted onto the mounting hole 12 along the axial direction of the mounting hole 12. First, the second boss 22 is inserted into the second groove 1221 through the opening of the second groove 1221. Then, the first boss 21 is inserted into the first groove 1211 through the clearance groove 1212. Finally, the side cover 2 is slid longitudinally until the first boss 21 and the clearance groove 1212 are misaligned. This achieves the positioning and installation of the side cover 2 in the mounting hole 12 and enables the circuit board 3 to be quickly installed into the housing 1.

[0068] In an optional embodiment, a snap-fit ​​hole or snap-fit ​​spring can be provided on the first hole wall 121 to replace the first groove 1211. The second hole wall 122 can be the same as the first hole wall 121. A corresponding snap-fit ​​spring or snap-fit ​​hole can be provided on the first side of the side cover 2. The second side can be the same as the first side and match the snap-fit ​​structure on the second hole wall 122. This snap-fit ​​fixing method can also achieve quick and stable installation of the side cover 2 into the mounting hole 12, thereby enabling the circuit board 3 to be inserted into the receiving cavity 11 along the axial direction of the mounting hole 12. It also satisfies the characteristics of rapid assembly and reduced assembly space occupation.

[0069] Reference Figure 3 and Figure 6 In some examples, a third groove 1231 is provided on the third hole wall 123 between the first hole wall 121 and the second hole wall 122, and a third boss 23 is also provided on the periphery of the side cover 2, which can be inserted into the third groove 1231.

[0070] By designing the fit between the third groove 1231 and the third boss 23, the fit range between the side cover 2 and the mounting hole 12 can be increased. The side cover 2 fits and connects the first hole wall 121, the second hole wall 122 and the third hole wall 123 in the mounting hole 12. This can not only enhance the assembly stability, but also play a certain sealing role, which helps to reduce the possibility of failure of the switch device 100.

[0071] Specifically, refer to Figure 3 and Figure 6 The third hole wall 123 is located on the side of the mounting hole 12 near the bottom of the housing 1, and the third groove 1231 extends along the lateral length of the third hole wall 123. The third boss 23 is provided on the side of the side cover 2 near the bottom of the housing 1, and the shape and size of the third boss 23 match the shape and size of the third groove 1231.

[0072] During the installation of the side cover 2 into the mounting hole 12, the first boss 21 and the first groove 1211, the second boss 22 and the second groove 1221 are first connected. After connection, the side cover 2 is slid along the longitudinal length of the first groove 1211 and the second groove 1221 towards the direction close to the third hole wall 123, so that the third boss 23 can be inserted into the third groove 1231, thereby further enhancing the installation stability of the side cover 2 in the mounting hole 12.

[0073] In one embodiment, the third groove 1231 is connected to both the first groove 1211 and the second groove 1221. The lateral length of the third boss 23 is the same as the lateral length of the third groove 1231, and the third boss 23 is connected to the first boss 21 and the second boss 22. This can play a certain sealing role at the third hole wall 123, preventing impurities from entering the switch device 100 and affecting the normal use of the switch device 100.

[0074] Reference Figures 3 to 6 In some examples, the housing 1 includes a bottom shell 13 and a top cover 14, the top cover 14 being connected to the bottom shell 13 and enclosing a mounting hole 12 with a first hole wall 121, a second hole wall 122 and a third hole wall 123.

[0075] The top cover 14 can be installed on the top of the bottom shell 13 after the assembly of the side cover 2 and the circuit board 3 is installed into the mounting hole 12. This can play a certain role in avoiding obstacles during the installation of the side cover 2 into the mounting hole 12, which is conducive to the accurate installation of the side cover 2 and the circuit board 3. Furthermore, the top cover 14 can further fix the side cover 2, thereby making the position of the circuit board 3 in the receiving cavity 11 more stable.

[0076] Reference Figures 3 to 6 The top cover 14 is located on the top of the bottom shell 13. The side cover 2 can be inserted from the top of the bottom shell 13, that is, from the opening of the first groove 1211 and the second groove 1221 facing the top cover 14, and slid directly along the longitudinal direction to the third boss 23 into the third groove 1231. Then the top cover 14 is fixedly connected to the bottom shell 13, so as to fix the position of the side cover 2 through the top cover 14 and prevent the side cover 2 from shaking or falling off. This assembly method is simple to operate and has high stability.

[0077] Reference Figure 4 and Figure 5 In some examples, there are multiple first protrusions 21 and multiple clearance grooves 1212, with each of the multiple first protrusions 21 corresponding to one of the multiple clearance grooves 1212.

[0078] By using multiple first bosses 21 in conjunction with multiple clearance grooves 1212, the accuracy of the side cover 2 when installed into the mounting hole 12 can be further improved, so that the circuit board 3 fixed on the side cover 2 can be accurately inserted into the mounting hole 12, avoiding misalignment or instability during the installation process and improving assembly stability.

[0079] The side cover 2 can also be inserted into the mounting hole 12 in the form of a first boss 21 and a relief groove 1212. In this embodiment, there are two first bosses 21, which are spaced apart. One of them is located in the middle of the first side of the side cover 2, and the other is located at the bottom of the first side. A snap-fit ​​boss 27 is provided on the first side near the top cover 14. The snap-fit ​​boss 27 can work with the first boss 21 in the first groove 1211 to achieve the function of limiting the installation, and can make the assembly points between the side cover 3 and the first hole wall 121 more evenly distributed, which is beneficial to the force balance and improves the assembly stability.

[0080] There are two clearance slots 1212 spaced apart, and the distance between the two clearance slots 1212 is greater than or equal to the longitudinal length of one of the first bosses 21.

[0081] During assembly, the two first bosses 21 located in the middle and bottom of the first side are inserted into the two relief grooves 1212 respectively, and the snap-fit ​​boss 27 located at the top can be inserted into the first groove 1211 from the opening on the side of the first groove 1211 facing the top cover 14.

[0082] After the two first protrusions 21 and one snap-fit ​​protrusion 27 are inserted into the first groove 1211, they can slide longitudinally within the first groove 1211. When the side cover 2 slides to the point where the third protrusion 23 connects with the third groove 1231, the first protrusion 21 located in the middle of the first side is exactly positioned between the two clearance grooves 1212. At this point, the two first protrusions 21 and the two clearance grooves 1212 are misaligned. Then, the bottom shell 13 and the top cover 14 are fixedly connected. This fixes the position of the side cover 2 and the circuit board 3 in the mounting hole 12, preventing the side cover 2 from continuing to slide or detaching from the first groove 1211. The arrangement of the two first protrusions 21 effectively prevents skewing during assembly, ensuring that the side cover 2 always maintains balanced movement. The assembly operation is also simple, easy to align, and the assembly process has high accuracy.

[0083] In addition, in this embodiment, three second protrusions 22 are provided. The three second protrusions 22 arranged at intervals cooperate with the second grooves 1221 to facilitate assembly and evenly distribute the mating points between the second protrusions 22 and the second grooves 1221, so that the force distribution between the second protrusions 22 and the second grooves 1221 is uniform, and the side cover 2 is prevented from shaking due to uneven force distribution.

[0084] Reference Figures 5 to 7 In some examples, the top cover 14 is provided with a fourth groove 141, which is opposite to the third groove 1231, and the side cover 2 is also provided with a fourth boss 24, which can be inserted into the fourth groove 141.

[0085] By designing the mating form between the fourth groove 141 and the fourth protrusion 24, the top cover 14 and the side cover 2 can form an interlocking mating form, which can further increase the mating range between the side cover 2 and the housing 1. The circumference of the side cover 2 is fully mated to the wall of the mounting hole 12, which not only ensures the stable installation of the side cover 2 and the circuit board 3 on the housing 1, but also provides a certain sealing effect, which helps to reduce the possibility of failure of the switching device 100.

[0086] Reference Figure 5 and Figure 7 The fourth groove 141 is opposite to the third groove 1231, specifically, the opening of the fourth groove 141 is opposite to the opening of the third groove 1231. The fourth groove 141 can be connected with the first groove 1211, the second groove 1221 and the third groove 1231 to form a ring. A full circle of bosses can be provided on the periphery of the side cover 2. In this way, the assembly stability of the side cover 2 in the mounting hole 12 is high, which can effectively avoid the risk of the side cover 2 shaking in the mounting hole, thereby improving the assembly stability of the circuit board 3 and preventing the circuit board 3 from shaking in the receiving cavity 11 and causing the circuit board 3 to collide with other components.

[0087] In this embodiment, the top cover 14 has a limiting ridge 142 laterally on the side facing the receiving cavity 11, and a bent portion is provided on the edge of the top cover 14 near the mounting hole 12. The bending direction of the bent portion is the same as the protrusion direction of the limiting ridge 142, and a fourth groove 141 is formed between the limiting ridge 142 and the bent portion of the edge of the top cover 14. Correspondingly, the lateral length of the fourth boss 24 matches the lateral length of the fourth groove 141. The fourth boss 24 is fully inserted into the fourth groove 141 to form an interlocking structure, which can improve the connection stability and sealing performance between the top cover 14 and the side cover 2.

[0088] Reference Figure 8 In some examples, the side cover 2 is provided with a first fixing part 25 on the side facing the receiving cavity 11, and the circuit board 3 is fixedly connected to the first fixing part 25.

[0089] The circuit board 3 is fixedly connected to the side cover 2 at a single point, which not only facilitates assembly, but also significantly reduces the structural space required by traditional multi-fixed-point connections while ensuring a stable connection. This minimizes the overall volume of the assembly, reduces the risk of interference between the circuit board 3 and other components in the cavity 11, and helps to reduce the overall size of the switching device.

[0090] In one alternative embodiment, the first fixing part 25 can be disposed at the middle position on the side cover 2 facing the receiving cavity 11. The first fixing part 25 is correspondingly fixed to the middle part of the circuit board 3 to fix the circuit board 3 to the middle of the side cover 2. In addition, the first fixing part 25 can be connected by snap-fit, adhesive, welding or fastener, and these connection methods can all achieve a reliable connection between the circuit board 3 and the side cover 2.

[0091] Furthermore, referring to Figure 8 The side cover 2 is also provided with a second fixing part 26 on the side facing the receiving cavity 11. The first fixing part 25 and the second fixing part 26 are arranged diagonally. The circuit board 3 is also fixedly connected to the second fixing part 26.

[0092] The circuit board 3 is fixedly connected to the side cover 2 in a diagonal fixing manner, which can simplify the assembly operation while ensuring stable connection and reduce the space occupied by other fixing structures. This helps to improve the space utilization rate in the receiving cavity 11 while ensuring assembly stability, so as to reduce the volume of the shell 1.

[0093] In this embodiment, both the first fixing part 25 and the second fixing part 26 are provided with threaded holes. The first fixing part 25 and the second fixing part 26 are arranged diagonally on the side of the side cover 2 facing the receiving cavity 11. The first through hole and the second through hole are provided at corresponding positions on the circuit board 3. In this way, the fixing can be achieved by fasteners, such as fastening bolts passing through the first through hole to connect to the first fixing part 25, and fastening bolts passing through the second through hole to connect to the second fixing part 26.

[0094] In an alternative embodiment, the circuit board 3 can also be fixedly connected to the side cover 2 by means of snap-fit ​​or adhesive bonding. For example, snap-fit ​​springs are provided on the side cover 2 and snap-fit ​​holes are provided on the circuit board 3. The circuit board 3 and the side cover 2 can also be fixedly installed by snap-fit ​​springs and snap-fit ​​holes, which has the same technical effect as the aforementioned embodiment.

[0095] 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 switching device, characterized in that, include: The housing has a receiving cavity, and the side wall of the housing is provided with mounting holes; Side cover, detachably mounted to the mounting hole; A circuit board is fixedly mounted on the side of the side cover facing the receiving cavity; The side cover and the circuit board are pre-assembled to form an assembly, and the assembly is installed into the mounting hole through the side cover so that the circuit board is positioned in the receiving cavity.

2. The switching device according to claim 1, characterized in that, The first hole wall of the mounting hole is provided with a first groove, and the second hole wall opposite to the first hole wall is provided with a second groove. The side cover is provided with a first boss and a second boss on its periphery. The first boss is connected to the first groove, and the second boss is connected to the second groove.

3. The switching device according to claim 2, characterized in that, Both the first groove and the second groove extend along a first direction. The first boss slides into the first groove, and the second boss slides into the second groove, so that the side cover can be slidably installed in the mounting hole or slidably removed from the mounting hole.

4. The switching device according to claim 2, characterized in that, The first hole wall is also provided with a clearance groove, which communicates with the first groove. The clearance groove extends from the first groove in a direction away from the receiving cavity to the side of the first hole wall away from the receiving cavity. The first boss can enter the first groove through the clearance groove, and the first boss slides in the first groove until it is misaligned with the clearance groove to fix the first boss.

5. The switching device according to claim 4, characterized in that, The first boss is provided in multiple ways, and the clearance groove is provided in multiple ways, with each of the first bosses corresponding to one of the clearance grooves.

6. The switching device according to any one of claims 2-5, characterized in that, A third groove is provided on the third hole wall between the first hole wall and the second hole wall, and a third boss is also provided on the periphery of the side cover, the third boss being able to be inserted into the third groove.

7. The switching device according to claim 6, characterized in that, The housing includes a bottom shell and a top cover. The top cover is connected to the bottom shell and surrounds the first hole wall, the second hole wall and the third hole wall to form the mounting hole.

8. The switching device according to claim 7, characterized in that, The top cover is provided with a fourth groove, which is opposite to the third groove. The side cover is also provided with a fourth protrusion, which can be inserted into the fourth groove.

9. The switching device according to any one of claims 1-5, characterized in that, The side cover has a first fixing part on the side facing the receiving cavity, and the circuit board is fixedly connected to the first fixing part.

10. The switching device according to claim 9, characterized in that, The side cover facing the receiving cavity is also provided with a second fixing part, the first fixing part and the second fixing part are arranged diagonally, and the circuit board is also fixedly connected to the second fixing part.

Images