Connecting structure of PCB and case

Abstract

The utility model provides a kind of connection structure and case of PCB board belongs to PCB board connection structure technical field, including PCB board and mounting piece, mounting piece is provided with avoiding hole, the avoiding hole is used to avoid wiring assembly;Mounting piece is connected to the PCB board, and it is correspondingly set with the avoiding hole, mounting gap is formed between the mounting piece and the PCB board, the mounting gap is used to accommodate wiring assembly, the PCB board and wiring assembly are respectively electrically connected to the mounting piece.The utility model provides a kind of connection structure and case of PCB board, to solve the problem that the peripheral reserved space of PCB board is limited in prior art, directly inserting installation of wiring assembly can lead to poor contact, even damage PCB board.

Description

Technical Field

[0001] This utility model belongs to the technical field of PCB board connection structure, and more specifically, it relates to a PCB board connection structure and chassis. Background Technology

[0002] In the manufacturing of electronic products such as electrical equipment, industrial controllers, and power modules, printed circuit boards (PCBs) are the core carriers. They need to be reliably electrically connected to external wires (such as power lines and signal lines) through terminal blocks to facilitate the overall installation of the equipment, as well as subsequent maintenance and testing.

[0003] Currently, the connection methods between PCBs and terminal blocks are mainly divided into two categories: soldering and plug-in. Soldering includes methods such as direct soldering and surface mount technology (SMT). Direct soldering involves inserting the terminal leads into through-holes in the PCB and fixing them with wave soldering, while SMT involves fixing the terminal pads to the PCB surface using solder paste printing and reflow soldering. This type of connection is strong and has a lower cost. Plug-in involves permanently soldering a socket (such as a pin header or female connector) to the PCB and then connecting it to a plug with wires. Alternatively, a screw-fixed terminal block is used, which combines the stability of soldering with the convenience of wiring. In this case, the bottom of the terminal block is soldered to the PCB through a direct insertion or surface mount method, and the external wires are clamped and fixed by screws on the terminal block.

[0004] For enclosed equipment such as electrical enclosures and cabinets, the assembly process typically follows an "inside-out" sequence. This means that internal components, PCBs, and cables are first assembled within the enclosure, and external wiring is only connected when the entire unit is in use or when it is assembled with a higher-level cabinet. Under this process constraint, if soldering connections are used, the space around the PCB is occupied by other components after the enclosure is closed, severely limiting the operating space and making it impossible to use soldering equipment. Therefore, a plug-in connection solution must be adopted.

[0005] However, due to the trend towards miniaturization and high-density integration of equipment, the space between the PCB board and the chassis is very limited. When the terminal plug is directly connected to the socket on the PCB board that is already installed in the confined space, mechanical interference often occurs between the terminal plug and the inner wall of the chassis or surrounding components. This interference not only makes insertion and removal difficult and affects assembly efficiency, but may also cause connector damage, poor contact, or even mechanical stress damage to the PCB board due to improper insertion or forced insertion and removal, seriously affecting the connection reliability of the equipment and the convenience of production and maintenance. Utility Model Content

[0006] The purpose of this utility model is to provide a connection structure and chassis for a PCB board, which aims to solve the problem that in the prior art, the limited space around the PCB board and the direct insertion and installation of wiring terminals can lead to poor contact or even damage to the PCB board.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: Firstly, a connection structure for a PCB board is provided, including: The PCB board has clearance holes for accommodating wiring assemblies; and The mounting component is connected to the PCB board and is correspondingly provided with the clearance hole. An installation gap is formed between the mounting component and the PCB board. The installation gap is used to accommodate the wiring assembly. The PCB board and the wiring assembly are electrically connected to the mounting component.

[0008] In conjunction with the first aspect, in one possible implementation, the mounting component includes: Mounting tabs are spaced apart from the PCB board, forming the mounting gaps; and A connecting piece is disposed within the mounting gap and is connected to the mounting piece at an angle. The connecting piece is also connected to the PCB board.

[0009] In conjunction with the first aspect, in one possible implementation, the connecting pieces are provided in multiple ways, and the multiple connecting pieces are symmetrically distributed on opposite sides of the mounting piece, forming a "U" shaped component with the mounting piece.

[0010] In conjunction with the first aspect, in one possible implementation, the PCB board has multiple locking holes distributed circumferentially along the clearance holes, and the mounting component has a locking part corresponding to each locking hole, the locking part being inserted into the locking hole.

[0011] In conjunction with the first aspect, in one possible implementation, the mounting component has a mounting hole, the axis of which is parallel to the axis of the clearance hole, and the mounting hole is used for plugging into a wiring assembly.

[0012] In conjunction with the first aspect, in one possible implementation, the mounting component includes a main body and a reinforcing part connected to the main body, the reinforcing part being located on the side of the main body away from the PCB board, the mounting hole penetrating the main body and the reinforcing part, and the mounting hole being a threaded hole.

[0013] In conjunction with the first aspect, in one possible implementation, the clearance hole is radially connected to the edge of the PCB board, forming a semi-closed hole with an opening.

[0014] In conjunction with the first aspect, in one possible implementation, the connection structure of the PCB board further includes a guide strip connected to the PCB board, the mounting component having a guide groove adapted to the guide strip, and the guide strip and the guide groove being slidably inserted into each other.

[0015] The beneficial effects of the PCB board connection structure provided by this utility model are as follows: Compared with the prior art, when performing external wire connection operations, it is not necessary to directly connect the wiring assembly to the socket in the narrow space around the PCB board. Instead, the wiring assembly can be placed in the installation gap first, and the position of the wiring assembly and the PCB board can be avoided by using the clearance holes. At the same time, it is fixed by connecting the mounting part to the wiring assembly. This application fundamentally avoids the problem of mechanical interference between the wiring assembly and the inner wall of the chassis or surrounding parts. It not only makes the plugging and unplugging operation smoother and greatly improves the assembly efficiency, but also eliminates situations such as incomplete plugging due to interference and connector damage caused by forced plugging and unplugging. It effectively protects the PCB board from mechanical stress damage and significantly improves the reliability of equipment connection and the convenience of production and maintenance.

[0016] Secondly, this utility model embodiment also provides a chassis, including the above-mentioned PCB board connection structure.

[0017] The beneficial effects of the chassis provided by this utility model are as follows: compared with the prior art, it adopts the above-mentioned PCB board connection structure, which has similar technical effects to the above-mentioned PCB board connection structure, and will not be described in detail here.

[0018] In conjunction with the second aspect, in one possible implementation, a connection structure is included, comprising a housing and a PCB board disposed within the housing, and a liquid cooling plate disposed within the housing, wherein the PCB board is disposed on opposite sides of the liquid cooling plate. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a top view of the connection structure of the PCB board provided in Embodiment 1 of this utility model; Figure 2 A bottom view of the connection structure of the PCB board provided in Embodiment 2 of this utility model; Figure 3 This is a bottom view of the connection structure of the PCB board provided in Embodiment 3 of this utility model.

[0021] In the diagram: 1. PCB board; 101. Clearance hole; 2. Mounting component; 201. Mounting piece; 202. Connecting piece; 203. Mounting hole; 204. Reinforcing part; 205. Snap-fit ​​part; 3. Guide strip. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] In the claims, description, and accompanying drawings of this utility model, unless otherwise expressly defined, the terms "first," "second," or "third," etc., are used to distinguish different objects, not to describe a specific order. Unless otherwise stated, other directional terms, such as "vertical," "clockwise," and "counterclockwise," indicate orientation or positional relationships based on the orientation and positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, not to indicate or imply that the referred device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of this utility model. In the claims, description, and accompanying drawings of this utility model, unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" should be interpreted broadly, that is, any connection method in which there is no displacement relationship or relative rotation relationship between the two, that is, including non-removable fixed connection, detachable fixed connection, integral connection, and fixed connection through other devices or elements. In the claims, description, and accompanying drawings of this utility model, the terms "comprising," "having," and their variations are intended to mean "including but not limited to."

[0024] Please refer to the following: Figures 1 to 3 The connection structure of the PCB board and the chassis provided by this utility model will now be described. The connection structure of the PCB board includes a PCB board 1 and a mounting component 2. The mounting component 2 has a clearance hole 101, which is used to avoid wiring components. The mounting component 2 is connected to the PCB board 1 and is correspondingly arranged with the clearance hole 101. An installation gap is formed between the mounting component 2 and the PCB board 1. The installation gap is used to accommodate the wiring components. The mounting component 2 is used to connect with the wiring components.

[0025] Compared with the prior art, the PCB board connection structure provided by this utility model eliminates the need to directly connect the wiring assembly to the socket in the narrow space around the PCB board 1 during external wire connection operations. Instead, the wiring assembly can be placed in the installation gap, and the clearance hole 101 is used to achieve positional clearance between the wiring assembly and the PCB board 1. Simultaneously, the mounting part 2 is used to connect and fix the wiring assembly. This application fundamentally avoids the problem of mechanical interference between the wiring assembly and the inner wall or surrounding components of the chassis. This not only makes the insertion and removal operations smoother and significantly improves assembly efficiency, but also eliminates situations such as incomplete insertion due to interference or connector damage caused by forced insertion and removal. It effectively protects the PCB board 1 from mechanical stress damage and significantly improves the reliability of equipment connections and the convenience of production and maintenance.

[0026] It should be noted that after the PCB board 1 and the mounting component 2 are assembled before the chassis shell is closed, even if the space around the PCB board 1 is occupied by other components after the shell is closed, the subsequent installation of the wiring assembly and the connection of external wires can still be completed through the cooperation of the installation gap and the clearance hole 101. This eliminates the need to be limited by the narrow operating space, further optimizes the assembly process, and reduces the difficulty of operation.

[0027] It should be noted that the mounting component 2 includes a mounting part and a connecting part. The mounting part is used to connect with the PCB board 1, and the connecting part is located in the mounting part and forms a socket structure, through which the wiring assembly is plugged in; or the socket can be used as a mounting component 2, and the wiring assembly can be accommodated by forming a mounting gap between the socket and the PCB board 1. Of course, the bolts on the wiring assembly can also be directly screwed to the mounting component 2.

[0028] It should be noted that the wiring assembly includes terminals and connectors connected to the terminals. For example, the terminals are connected to mounting piece 2 and located within the mounting gap, while the connectors are inserted into the mounting piece and secured to it using nuts or clips. Alternatively, corresponding locking holes can be provided in the terminals and mounting piece, and the connectors (which can be bolts or screws) can be inserted into these holes to lock the mounting piece to the terminals. Both the terminals and connectors are located within the mounting gap. Of course, the terminals and / or connectors can also extend beyond the mounting gap, but they cannot protrude from the side of the PCB board 1 opposite to the mounting piece 2.

[0029] It should be noted that the wiring assembly mentioned in this application refers to a conventional terminal block, or it can be a terminal block and a corresponding connecting component. When the terminal block has a plug, the wiring assembly is the terminal block; when the terminal block needs to be connected to the mounting component with the help of an external component, the wiring assembly includes the terminal block and a corresponding connecting component, which can be a bolt, screw, or clip, etc. The connecting component can be fixed to the terminal block or can be separately set from the terminal block.

[0030] It should be noted that one side of PCB board 1 is adjacent to the housing, while the other side houses other electrical components. Therefore, the wiring assembly can only be connected to PCB board 1 from the side closer to the housing. Otherwise, surrounding components will interfere with the operator's installation of the wiring assembly and may also cause interference between the wiring assembly and other electrical components. Therefore, mounting component 2 can be placed on the side of PCB board 1 away from the housing. Since the installation gap between mounting component 2 and PCB board 1 is small, it will not affect surrounding components. Furthermore, the connection between mounting component 2 and PCB board 1 is completed before overall assembly and will not affect the operator's working space. In addition, when installing the wiring assembly, the housing cover can be opened first, the wiring assembly connected to mounting component 2 connected, and then the cover closed, making operation more convenient and avoiding mutual interference.

[0031] Specifically, mounting component 2 is a conductor.

[0032] Optionally, the mounting component 2 can be soldered, plugged in, or screwed to the PCB board 1, or it can be glued.

[0033] In some embodiments, please refer to Figure 2 The mounting component 2 includes a mounting piece 201 and a connecting piece 202. The mounting pieces 201 are spaced apart from the PCB board 1 to form a mounting gap. The connecting piece 202 is located in the mounting gap and is connected to the mounting pieces 201 at an angle. The connecting piece 202 is also connected to the PCB board 1.

[0034] The connecting piece 202 is located within the installation gap and is connected at an angle to the mounting piece 201. It is also fixed to the PCB board simultaneously, forming a support frame. This strengthens the connection between the mounting piece 2 and the PCB board, prevents the mounting piece 201 from deforming due to stress, ensures that the installation gap remains stable, and avoids the wiring assembly from being unable to be installed smoothly or making poor contact due to gap deformation. The angled design of the connecting piece 202 also provides a certain limiting effect within the installation gap. When the wiring assembly is placed in the gap, the connecting piece 202 can help limit its lateral displacement, further improving the stability of the wiring assembly after installation.

[0035] Optionally, multiple connecting pieces 202 are provided, distributed circumferentially along the mounting piece 201 and connected to the PCB board 1. Compared to a single or few connecting pieces 202 design, the circumferential distribution structure provides a "multi-point support frame" for the mounting piece 201, improving the overall stability and structural rigidity of the connection between the mounting piece 2 and the PCB board. During the process of forming an installation gap between the mounting piece 201 and the PCB board, the circumferentially distributed connecting pieces 202 ensure that the spacing between each part of the mounting piece 201 and the PCB board is uniform, effectively preventing the mounting piece 201 from tilting or warping due to insufficient local support, thus ensuring that the installation gap always maintains a regular shape and stable dimensions. When the wiring assembly is placed in the gap, the circumferentially distributed connecting pieces 202 can limit and constrain it from all sides of the terminal.

[0036] In some embodiments, please refer to Figure 2 Multiple connecting pieces 202 are provided, and the multiple connecting pieces 202 are symmetrically distributed on opposite sides of the mounting piece 201, forming a "U" shaped component with the mounting piece 201. The symmetrical structure of the "U"-shaped component ensures that the supporting force on the mounting piece 201 is evenly distributed along both sides. Compared to an asymmetrical distribution, this design effectively prevents the mounting piece 201 from tilting or warping on one side due to unbalanced forces, ensuring that the installation gap remains uniform and regular. During assembly, when the "U"-shaped component is connected to the PCB board, the symmetrically distributed connecting pieces 202 quickly achieve parallel alignment between the mounting piece 201 and the PCB board, eliminating the need for repeated adjustments to the positions of each connecting piece 202 and significantly improving assembly efficiency. Simultaneously, the symmetrical "U"-shaped structure ensures that the connection points between the entire mounting component 2 and the PCB board are symmetrically distributed. When the wiring assembly is inserted into the installation gap and fixed, the generated external force is transmitted through the mounting piece 201 to the symmetrical connecting pieces 202 on both sides, and then evenly distributed to the corresponding connection points on the PCB board. This completely eliminates localized damage to the PCB board or solder joint detachment caused by concentrated force, further ensuring the structural integrity of the PCB board.

[0037] In some embodiments, please refer to Figure 1 The PCB board 1 has multiple card holes distributed around the clearance hole 101. The mounting part 2 has a carding part 205 corresponding to each card hole, and the carding part 205 is inserted into the card hole. Compared to traditional bolted or welded connections, this snap-fit ​​mechanism significantly reduces assembly time, especially in mass production scenarios, greatly improving overall production efficiency. Simultaneously, the snap holes and snap-fit ​​parts 205 distributed circumferentially along the clearance hole 101 ensure precise alignment of the mounting component 2 with the clearance hole 101, preventing misalignment of the mounting component 2 and thus ensuring smooth electrical connection between the wiring assembly and the PCB board via the clearance hole 101, eliminating subsequent wiring problems caused by misalignment. The engagement of multiple snap-fit ​​parts 205 distributed circumferentially along the clearance hole 101 with the snap holes creates multi-point circumferential fixation between the mounting component 2 and the PCB board, evenly distributing external forces on the mounting component 2. When the wiring assembly is inserted, removed, or fixed within the installation gap, the external force is transmitted through the snap-fit ​​parts 205 to multiple circumferential points on the PCB board, preventing concentrated force on a single connection point and ensuring the reliability of the wiring assembly connection.

[0038] In some embodiments, please refer to Figures 1 to 3 The mounting component 2 has a mounting hole 203, the axis of which is parallel to the axis of the clearance hole 101, and the mounting hole 203 is used to connect and cooperate with the wiring assembly. When performing wiring operations, operators simply insert the wiring assembly along the axis of the mounting hole 203. The guiding effect of the mounting hole 203 ensures that the pins or connection terminals of the wiring assembly are precisely aligned with the electrical connection points corresponding to the clearance holes 101 on the PCB board, eliminating the need for repeated adjustments to the terminal angle or position. Once the terminal is inserted into the mounting hole 203, the hole wall provides radial constraint from all sides, limiting lateral displacement and preventing loosening or displacement of the terminal due to vibration or impact during equipment operation.

[0039] In some embodiments, please refer to Figures 2 to 3 The mounting component 2 includes a main body and a reinforcing part 204 connected to the main body. The reinforcing part 204 is located on the side of the main body away from the PCB board 1. The mounting hole 203 penetrates the main body and the reinforcing part 204, and the mounting hole 203 is a threaded hole. When the wiring assembly is inserted along the axis of the threaded hole and tightened by the thread, the threaded structure provides stable axial pressure, fixing the wiring assembly within the mounting hole 203 and preventing terminal loosening or displacement under dynamic conditions such as high-frequency vibration and impact. When tightening the wiring assembly, the axial force on the threaded hole is distributed and transmitted through the main body and the reinforcing part 204, preventing the main body from cracking or deforming due to excessive local stress. At the same time, the reinforcing part 204 enhances the structural rigidity of the side of the mounting part 2 away from the PCB board, preventing damage to the threaded hole of the mounting part 2 due to external impact and wear during long-term use, extending the service life of the mounting part 2, and ensuring long-term stable and reliable connection structure. In addition, the reinforcing part 204 is located on the side of the main body away from the PCB board, without occupying the space around the PCB board, thus ensuring structural strength while avoiding occupying the installation space of the wiring assembly.

[0040] In some embodiments, please refer to Figures 1 to 3 The clearance hole 101 is radially connected to the edge of the PCB board 1, forming a semi-closed hole with an opening. When the PCB board is surrounded by other components and the wiring components are difficult to insert directly along the axis of the clearance hole 101, the operator can use the radial opening of the clearance hole 101 to slide the wiring components radially from the edge of the PCB board into the hole, eliminating the need to repeatedly adjust the position of the PCB board or surrounding components and significantly reducing the difficulty of assembly operations. For high-density integrated PCB boards, the edge area has relatively ample space. Designing the clearance hole 101 to connect with the edge can reduce the space occupied by the functional modules in the middle of the PCB board, further optimizing the space utilization of the PCB board.

[0041] In some embodiments, please refer to Figure 3 The connection structure of the PCB board also includes a guide strip 3 connected to the PCB board 1. The mounting part 2 has a guide groove adapted to the guide strip 3, and the guide strip 3 and the guide groove are slidably inserted into each other. During assembly, simply align the guide groove on the mounting part 2 with the guide strip 3 to achieve a sliding connection, reducing assembly difficulty and eliminating the need for external connecting parts, thus simplifying the installation process. Furthermore, the large contact area between the guide strip 3 and the guide groove effectively disperses localized stress on the mounting part 2, preventing deformation due to uneven stress and ensuring a stable installation gap.

[0042] In some embodiments, please refer to Figure 3 The longitudinal section of the guide bar 3 is trapezoidal, and the width of the guide bar 3 gradually increases towards the side away from the PCB board 1.

[0043] Once the mounting component 2 slides to the preset position, the guide bar 3 has a larger width on the side facing away from the PCB board 1, thus creating a pulling force on the mounting component 2, making it difficult for the mounting component 2 to detach or shift along a direction perpendicular to the guide. During equipment operation, even when encountering high-frequency vibration or impact, this wedge-shaped locking structure can effectively limit the displacement of the mounting component 2, ensuring the relative position of the mounting component 2 and the PCB board remains stable, thereby ensuring that the installation gap size remains unchanged and providing continuous support for the reliable connection of the wiring components.

[0044] Optionally, one end of the guide bar 3 is provided with a limiting baffle to limit the mounting part 2 in the sliding direction.

[0045] Optionally, both the guide bar 3 and the mounting component 2 are conductors, and the mounting component 2 achieves conductive connection with the PCB board 1 through the guide bar 3.

[0046] Based on the same inventive concept, this utility model also provides a chassis. The chassis includes the connection structure of the PCB board described above.

[0047] The chassis provided by this utility model adopts the aforementioned PCB board connection structure. When performing external wire connection operations, it is not necessary to directly connect the wiring assembly to the socket in the narrow space around the PCB board 1. Instead, the wiring assembly can be placed in the installation gap first, and the clearance hole 101 is used to achieve positional clearance between the wiring assembly and the PCB board 1. At the same time, it is fixed by connecting the mounting part 2 to the wiring assembly. This application fundamentally avoids the problem of mechanical interference between the wiring assembly and the inner wall or surrounding parts of the chassis. This not only makes the plugging and unplugging operation smoother and greatly improves the assembly efficiency, but also eliminates situations such as incomplete plugging due to interference and connector damage caused by forced plugging and unplugging. It effectively protects the PCB board 1 from mechanical stress damage and significantly improves the reliability of equipment connection and the convenience of production and maintenance.

[0048] In some embodiments, the chassis includes a housing and a connection structure for a PCB board disposed within the housing, and also includes a liquid cooling plate disposed within the housing, with PCB boards disposed on opposite sides of the liquid cooling plate.

[0049] Because a liquid cooling plate is located on one side of the PCB board and the other side is adjacent to the chassis, the surrounding space of the PCB board is limited. When using the entire machine or assembling it with an upper-level rack, if the connection structure described in this application is not used, interference between the wiring components and the chassis will occur. This would necessitate increasing the chassis size to connect the wiring components to the PCB board, resulting in an overall increase in chassis size. With this solution, the wiring components are located within the installation gap, avoiding interference with the chassis and facilitating chassis miniaturization. The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A connection structure for a PCB board, characterized in that, include: The PCB board has clearance holes for clearing wiring components. as well as The mounting component is connected to the PCB board and is correspondingly provided with the clearance hole. An installation gap is formed between the mounting component and the PCB board. The installation gap is used to accommodate the wiring assembly. The PCB board and the wiring assembly are electrically connected to the mounting component.

2. The PCB board connection structure as described in claim 1, characterized in that, The mounting component includes: Mounting tabs are spaced apart from the PCB board, forming the mounting gaps; and A connecting piece is disposed within the mounting gap and is connected to the mounting piece at an angle. The connecting piece is also connected to the PCB board.

3. The PCB board connection structure as described in claim 2, characterized in that, The mounting plate has multiple connecting pieces, which are symmetrically distributed on opposite sides of the mounting plate, and the multiple connecting pieces and the mounting plate form a "U" shaped component.

4. The PCB board connection structure as described in claim 1, characterized in that, The PCB board has multiple locking holes distributed circumferentially along the clearance holes. The mounting component has a locking part corresponding to each locking hole, and the locking part is inserted into the locking hole.

5. The PCB board connection structure as described in claim 1, characterized in that, The mounting component has a mounting hole, the axis of which is parallel to the axis of the clearance hole, and the mounting hole is used for plugging into the wiring assembly.

6. The PCB board connection structure as described in claim 5, characterized in that, The mounting component includes a main body and a reinforcing part connected to the main body. The reinforcing part is located on the side of the main body away from the PCB board. The mounting hole penetrates the main body and the reinforcing part, and the mounting hole is a threaded hole.

7. The PCB board connection structure as described in claim 1, characterized in that, The clearance hole is radially connected to the edge of the PCB board, forming a semi-closed hole with an opening.

8. The PCB board connection structure as described in claim 1, characterized in that, The connection structure of the PCB board also includes a guide strip connected to the PCB board. The mounting component has a guide groove adapted to the guide strip, and the guide strip and the guide groove are slidably inserted into each other.

9. A chassis, characterized in that, The PCB board has the connection structure described in any one of claims 1-8.

10. The chassis as described in claim 9, characterized in that, The device includes a housing and a connection structure for a PCB board disposed within the housing, and also includes a liquid cooling plate disposed within the housing, with the PCB board disposed on opposite sides of the liquid cooling plate.

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