Fixing structure of circuit board and case

Abstract

The embodiments of the present application relate to the technical field of computers. Provided are a fixing structure of a circuit board and a case. The fixing structure comprises a plate body, a connecting assembly and a sliding member. The plate body is configured to be connected to the circuit board. The connecting assembly comprises a connector and a first fixing member configured to cooperate with the connector, wherein the connector is fixed to one of the plate body and the case, the first fixing member is fixed to the other of the plate body and the case, and the first fixing member is configured such that the connector is connected to or disconnected from the first fixing member when the connector is at a preset position. The sliding member is slidably disposed on the plate body, and the sliding member is configured to be connected to or disconnected from a contact plate when the sliding member is at a locked or an unlocked position. The fixing structure of the circuit board in the present application facilitates the mounting and dismounting of the circuit board.

Description

Circuit board fixing structure and case

[0001] The present application claims priority to the Chinese patent application No. 202410861641.X, filed on June 28, 2024, and entitled "Circuit board fixing structure", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of computer, and in particular, to a circuit board fixing structure and a case. BACKGROUND

[0003] PCIE card, full name PCI Express card, is an expansion card of a computer using PCI Express interface. Such expansion card can be connected with the mainboard of the computer using PCI Express interface to increase or expand the function of the computer. In some cases, it is necessary to plug the circuit board on the expansion card.

[0004] In related technologies, when the circuit board needs to be matched with the expansion card, a support is usually used. First, the expansion card is connected to the case of the electronic processing device such as computer or server, and then the circuit board is connected to the support. The support is fixed to the case by bolts, so that the circuit board and the expansion card are fixed to the plugging state.

[0005] However, the support and the case are fixed by bolts, which is not convenient for mounting and dismounting the support. SUMMARY

[0006] Therefore, the present application provides a circuit board fixing structure and a case to solve the technical problem that the support and the case are fixed by bolts, which is not convenient for mounting and dismounting the support.

[0007] To achieve the above-mentioned purpose, the present application provides a circuit board fixing structure and a case, which adopts the following technical solution:

[0008] On the one hand, the present application provides a circuit board fixing structure to connect the expansion card and the circuit board. The expansion card is provided with a contact plate. The fixing structure comprises:

[0009] a board body for connecting the circuit board;

[0010] a connecting assembly comprising a connecting piece and a first fixing piece matched with the connecting piece. The connecting piece is fixed to any one of the board body and the case, and the first fixing piece is fixed to the other one. The first fixing piece is configured to be connected or disconnected with the first fixing piece when the connecting piece is in a preset position.

[0011] A sliding member is slidingly arranged on the plate body, and is configured to be connected with or disconnected from the contact plate when the sliding member is in a locked or unlocked position.

[0012] In a possible implementation, the connecting member comprises a fixed part and an elastic part connected to the fixed part, the fixed part is connected to the plate body, and the elastic part is provided with a protruding member configured to be buckled with the first fixed member under the elastic action of the elastic part when the connecting member is in a preset position, so as to limit the connecting member.

[0013] In a possible implementation, the connecting member further comprises a first stop member fixed on the fixed part, and the elastic part is configured to cancel the buckling with the first fixed member when the protruding member abuts against the first stop member.

[0014] In a possible implementation, one end of the sliding member is provided with a matching groove for plugging or unplugging with the barb on the contact plate.

[0015] In a possible implementation, the fixing structure of the circuit board further comprises an anti-disengagement assembly for preventing the sliding member and the expansion card from being unplugged.

[0016] In a possible implementation, the anti-disengagement assembly comprises:

[0017] a second fixed member fixed on the sliding member;

[0018] a third fixed member fixed on the plate body;

[0019] an elastic member connecting the second fixed member and the third fixed member, and the elastic member is configured to make the sliding member in a locked or unlocked position when in a natural or compressed state.

[0020] In a possible implementation, the bottom of the sliding member is provided with a guide surface, the guide surface is arranged at one end of the sliding member provided with the matching groove, and the guide surface is configured to contact the contact plate to drive the sliding member to slide during the movement of the plate body towards the expansion card, so that the sliding member reaches the locked position.

[0021] In a possible implementation, the plate body is fixed with a second stop member, and the second stop member is configured to make the sliding member in an unlocked position when the sliding member abuts against the second stop member.

[0022] In a possible implementation, a limiting hole is formed on any one of the sliding member and the plate body, and the limiting hole is arranged along the sliding direction of the sliding member, and the other one is provided with a limiting member arranged in the limiting hole;

[0023] The limiting hole is provided with a locking position and an unlocking position, and the limiting member is configured to be in a locking position when being slid to the locking position, and in an unlocking position when being slid to the unlocking position.

[0024] In a possible implementation, the plate body is provided with a support frame configured to abut against the circuit board when the plate body is connected with the circuit board.

[0025] In another aspect, the embodiment of the present application further provides a case including the fixing structure of the circuit board.

[0026] The fixing structure of the circuit board provided by the embodiment of the present application first fixes the circuit board on the plate body, and then when the plate body needs to be connected and fixed with the expansion card, the connecting member is installed at the preset position, the first fixing member and the connecting member are connected or disconnected with each other, so that the plate body and the case are fixed or separated, and the connection or disconnection with the contact plate can be realized by sliding the sliding member relative to the plate body, so that the fixing or separation between the plate body and the contact plate is realized, without the aid of other tools or the need to turn the bolt, thereby improving the convenience of the plate body installation and disassembly, and thus improving the convenience of the circuit board installation and disassembly; and the connection mode of the connecting assembly between the plate body and the case can fix the side of the circuit board close to the case, and at the same time, the connection mode of the sliding member and the contact plate can fix the circuit board and the contact plate, so that the fixing strength between the circuit board and the expansion card is improved by increasing the fixing points, and the disconnection between part of the circuit board and the expansion card is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0027] The drawings incorporated into the specification and constituting a part of the specification show the embodiments consistent with the present application, and together with the specification serve to explain the principle of the embodiments of the present application. Obviously, the drawings described below are some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0028] FIG. 1 is a structural schematic diagram of the fixing structure of the circuit board provided by the embodiment of the present application;

[0029] FIG. 2 is a structural schematic diagram of the fixing structure of the circuit board provided by the embodiment of the present application from one perspective;

[0030] FIG. 3 is a structural schematic diagram of the fixing structure of the circuit board provided by the embodiment of the present application from another perspective;

[0031] FIG. 4 is a structural schematic diagram of the fixing structure of the circuit board provided by the embodiment of the present application from one perspective;

[0032] Fig. 5 is a structural schematic diagram of another view of the installation expansion board of Fig. 3;

[0033] Fig. 6 is a structural schematic diagram of part A in Fig. 5;

[0034] Fig. 7 is a structural schematic diagram of part B in Fig. 5.

[0035] Legend: 10-expansion card; 11-contact plate; 12-barb; 20-circuit board; 30-chassis; 100-board body; 110-second stop piece; 120-limiting piece; 130-mounting seat; 140-support frame; 200-connection assembly; 210-connection piece; 211-fixed part; 212-elastic part; 2121-protruding piece; 213-first stop piece; 220-first fixed piece; 300-sliding piece; 310-matching groove; 320-guiding surface; 330-limiting hole; 340-protective cover; 341-operation opening; 400-anti-dropping assembly; 410-second fixed piece; 420-third fixed piece; 430-elastic piece.

[0036] The above-mentioned drawings have shown specific embodiments, which will be described in more detail hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the embodiments of the present application in any way, but to illustrate the concept of the embodiments of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0037] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, the same numbers are used to indicate the same or similar components. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the embodiments of the present application. Rather, they are merely examples of devices and methods consistent with some aspects of the embodiments of the present application, as detailed in the appended claims.

[0038] Secondly, it should be noted that in the description of the embodiments of the present application, the terms indicating the direction or position relationship such as "inner" and "outer" are based on the direction or position relationship shown in the drawings, which is merely for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0039] In addition, it needs to be explained that, in the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0040] As the background art, when the circuit board needs to be matched with the expansion card, a support is usually used, the expansion card is first connected to the computer case, and then the circuit board is connected to the support through bolts, the support is moved towards the expansion card, so that the contact plate on the expansion card is inserted and matched with the slot of the circuit board, so that the PCIE card is electrically connected with the circuit board. In order to prevent the contact plate from being separated from the slot, the support needs to be connected to the case, so that the contact plate is fixed to the state of being inserted into the slot.

[0041] However, when the support is connected to the case, the support and the case are usually fixed by bolts. When the circuit board needs to be installed and disassembled, tools need to be used to screw the bolts. When the bolt is an internal hexagonal bolt, a screwdriver needs to be used to screw the bolt. The space inside the case is small, which makes it inconvenient to install and disassemble the circuit board.

[0042] In view of the above technical problems, the embodiments of the present application provide a fixing structure of a circuit board. First, the circuit board is fixed on the mounting seat on the plate body through the bolt. When the circuit board and the expansion card need to be connected, the plate body moves along the guide groove on the contact plate towards the expansion card. Under the elastic action of the elastic member, the protruding member and the first fixing member are buckled, the installation and the limiting of the connecting member are completed, the fixing of the plate body and the case is realized, the guide surface contacts the contact plate, the sliding member reaches the locking position along the guide surface, the fixing between the plate body and the contact plate is realized, and the stable connection between the circuit board and the expansion card is realized. When the circuit board and the expansion card need to be separated, the elastic member is pulled towards the first stop member, the elastic part is deformed, the buckling state between the protruding member and the first fixing member is cancelled, the fixing between the plate body and the case is unlocked, the sliding member is pulled towards the second stop member, the matching groove is separated from the barb on the contact plate, and the fixing between the plate body and the contact plate is unlocked. The convenience of disassembling the plate body is improved, without the aid of other tools or the need to screw the bolts, so as to facilitate the installation and disassembly between the circuit board and the contact plate.

[0043] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific examples. The following specific examples can be combined with each other, and the same or similar concepts or processes can not be described again in some examples. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0044] Referring to FIGS. 1-7, in one aspect, the present embodiments provide a fixing structure of a circuit board for connecting an expansion card 10 and a circuit board 20, the expansion card 10 being provided with a contact plate 11, the fixing structure comprising a plate body 100, a connecting assembly 200, and a sliding piece 300.

[0045] The plate body 100 is used to connect the circuit board 20; the connecting assembly 200 comprises a connecting piece 210 and a first fixing piece 220 arranged in cooperation with the connecting piece 210, the connecting piece 210 being fixed to any one of the plate body 100 and a case 30, the first fixing piece 220 being fixed to the other one, the first fixing piece 220 being configured to be connected or disconnected with the first fixing piece 220 when the connecting piece 210 is in a preset position; the sliding piece 300 is slidingly arranged on the plate body 100, the sliding piece 300 being configured to be connected or disconnected with the contact plate 11 when the sliding piece 300 is in a locked or unlocked position.

[0046] Referring to FIGS. 1 and 2, in the present embodiment, the plate body 100 is provided with a mounting seat 130, the mounting seat 130 being provided with a threaded hole, the circuit board 20 being detachably connected to the mounting seat 130 through a bolt, facilitating the mounting and dismounting of the circuit board 20 and the plate body 100.

[0047] By adopting the above technical solution, the circuit board 20 is first fixed to the plate body 100, then when it is necessary to connect and fix the plate body 100 and the expansion card 10, the connecting piece 210 is installed in the preset position, the first fixing piece 220 and the connecting piece 210 are connected or disconnected with each other, so that the plate body 100 and the case 30 are fixed or separated, and the connection or disconnection between the sliding piece 300 and the contact plate 11 can be realized by sliding the sliding piece 300 relative to the plate body 100, so that the fixing or separation between the plate body 100 and the contact plate 11 is realized, without the need for other tools or the need for screwing the bolt, thereby improving the convenience of mounting and dismounting the plate body 100, and thus improving the convenience of mounting and dismounting the circuit board 20; and the connecting mode of the connecting assembly 200 between the plate body 100 and the case 30 can fix the side of the circuit board 20 close to the case 30, and at the same time, the connecting mode of the sliding piece 300 and the contact plate 11 can fix the circuit board 20 and the contact plate 11, so that the fixing strength between the circuit board 20 and the expansion card 10 is improved by increasing the fixing points, thereby preventing the disconnection between part of the circuit board 20 and the expansion card 10.

[0048] Referring to FIG. 6, the connecting piece 210 includes a fixed part 211 and an elastic part 212 connected to the fixed part 211, the fixed part 211 is connected to the plate body 100, and the elastic part 212 is provided with a protruding piece 2121, which is configured to be buckled with the first fixing piece 220 under the elastic action of the elastic part 212 when the connecting piece 210 is in a preset position, so as to limit the connecting piece 210.

[0049] The fixed part 211 is the main supporting part of the connecting piece 210, and further, the fixed part 211 is installed at one end of the plate body 100. In some examples, the fixed part 211 is a fixed plate. The elastic part 212 is connected to the fixed part 211. In some examples, the elastic part 212 includes an elastic plate and a movable plate. The elastic plate is connected to the end of the fixed plate and the movable plate, respectively, so that a cavity is formed between the three. Due to the elastic characteristics of the elastic plate, there is always a gap between the fixed plate and the movable plate under the action of no external force. The protruding piece 2121 is arranged on the side of the movable plate away from the fixed plate.

[0050] When the plate body 100 is installed in a preset process, the protruding piece 2121 and the first fixing piece 220 are buckled under the elastic action of the elastic piece 430, the installation and limiting of the connecting piece 210 are completed. When it is necessary to disassemble the connecting piece 210, the protruding piece 2121 is separated from the first fixing piece 220 by applying appropriate external force. With the separation of the protruding piece 2121 and the first fixing piece 220, the connection between the connecting piece 210 and the plate body 100 is also released, and the connecting piece 210 is detached from the plate body 100. The connection mode is simple in structure, and the installation and disassembly process is convenient. The limiting function is realized by the buckling of the protruding piece 2121 and the first fixing piece 220, and the connection is stable and reliable.

[0051] It should be noted that the above-mentioned connecting piece 210 is fixed to any one of the plate body 100 and the case 30, and the first fixing piece 220 is fixed to the other.

[0052] In one embodiment, the connecting piece 210 is fixed to the plate body 100, and the first fixing piece 220 is fixed to the case 30. When the protruding piece 2121 is buckled to the first fixing piece 220, the contact surface of the two is the upper end surface of the protruding piece 2121. In another embodiment, the connecting piece 210 is fixed to the case 30, and the first fixing piece 220 is fixed to the plate body 100. When the protruding piece 2121 is buckled to the first fixing piece 220, the contact surface of the two is the lower end surface of the protruding piece 2121. That is, when the plate body 100 is located in the installation position, the connecting assembly 200 can ensure that the end of the plate body 100 close to the case 30 is fixed, without limitation.

[0053] Further, referring to FIG. 6, the connecting piece 210 further includes a first stop piece 213 fixed on the fixed part 211. When the elastic part 212 abuts against the first stop piece 213, the protruding piece 2121 cancels the buckling with the first fixed piece 220.

[0054] In some examples, the first stop piece 213 is a stop plate arranged in a cavity formed by the fixed plate, the elastic plate, and the interactive plate. The first stop piece 213 is fixedly connected to the fixed plate and has a spacing between the elastic plate.

[0055] When it is necessary to cancel the limiting function of the connecting piece 210, an external force can be applied, such as pulling the elastic piece 430 towards the first stop piece 213, so that the elastic part 212 deforms. When the elastic part 212 deforms due to the external force and abuts against the first stop piece 213, the deformation of the elastic part 212 reaches its maximum range, at which time the buckling between the protruding piece 2121 and the first fixed piece 220 is canceled, and the fixing of the end of the plate body 100 is canceled, so that the plate body 100 can be removed.

[0056] Further, referring to FIGS. 1 and 7, one end of the sliding piece 300 is provided with a matching groove 310 for plugging or unplugging with the barb 12 on the contact plate 11.

[0057] The sliding piece 300 is an important component for connecting and fixing the expansion card 10, and one end of the sliding piece 300 is provided with the matching groove 310. The main function of the matching groove 310 is to provide an interface for plugging or unplugging with the barb 12 on the contact plate 11, and the matching groove 310 matches the barb 12 on the contact plate 11.

[0058] When the sliding piece 300 is in the locked position, the matching groove 310 is plugged with the barb 12 on the contact plate 11, thereby realizing stable connection between the expansion card 10 and the circuit board 20. When it is necessary to unlock the expansion card 10, the sliding piece 300 is pushed to move to the unlocked position, and the matching groove 310 is unplugged with the barb 12, allowing the expansion card 10 to be taken out of the slot.

[0059] Through the movement of the sliding piece 300, the locking and unlocking of the expansion card 10 can be easily realized. At the same time, the plugging mode of the matching groove 310 and the barb 12 provides stable connection, ensuring the fixation between the expansion card 10 and the circuit board 20, and avoiding disconnection after installation.

[0060] In addition, the board body 100 has one fixed point through the connection assembly 200 and another fixed point through the insertion of the sliding member and the contact plate 11. In some examples, the sliding member 300 is arranged near one end of the board body 100 away from the connection assembly 200, and the two fixed points are arranged near the ends of the board body 100, respectively, to ensure the installation stability of the board body 100 and further improve the stable connection between the circuit board 20 and the expansion card 10.

[0061] When the board body 100 needs to be unlocked, the operator can simultaneously push the elastic part 212 and the sliding member 300 to achieve the unlocking of the board body 100, without the need for multiple people to work together, which is convenient to operate and has high work efficiency.

[0062] In some embodiments, the fixing structure of the circuit board further includes an anti-disengagement assembly 400 for preventing the disengagement of the sliding member 300 and the expansion card 10, further enhancing the stability and safety of the connection between the sliding member 300 and the expansion card 10.

[0063] Further, referring to FIGS. 1, 2 and 3, the anti-disengagement assembly 400 includes a second fixing member 410, a third fixing member 420 and an elastic member 430. The second fixing member 410 is fixed on the sliding member 300, and the third fixing member 420 is fixed on the board body 100. The elastic member 430 connects the second fixing member 410 and the third fixing member 420, and is configured to keep the sliding member 300 in the locked or unlocked position when in a natural or compressed state.

[0064] For example, the elastic member 430 can be a spring, a rubber block, an elastic sheet or the like, which provides the necessary elastic force and restoring force for the second fixing member 410 and the third fixing member 420.

[0065] When the elastic member 430 is not subjected to external force, its length or shape remains unchanged, and at this time the sliding member 300 is in the locked position. When external force is applied to move the sliding member 300, the elastic member 430 is compressed or deformed to provide resistance to maintain the locked or unlocked position. Through the elasticity and restoring force of the elastic member 430, the stability of the sliding member 300 in the locked and unlocked positions is ensured, and the operator only needs to apply appropriate external force to easily achieve the unlocking operation.

[0066] As shown in FIGS. 4, 5 and 7, a guide groove is usually arranged at the top end of the contact plate 11, and a guide member is arranged on the board body 100. During the installation of the board body 100, the guide member slides along the guide groove to approach the expansion card 10. In some embodiments, the bottom of the sliding member 300 is provided with a guide surface 320, which is arranged at one end of the sliding member 300 provided with a matching groove 310. The guide surface 320 is configured to contact the contact plate 11 during the movement of the board body 100 towards the expansion card 10 to drive the sliding member 300 to slide, so that the sliding member 300 reaches the locked position.

[0067] When the plate body 100 moves towards the expansion card 10, the guide surface 320 will be in contact with the contact plate 11, and the guide surface 320 will provide a clear guide direction to ensure that the sliding piece 300 can slide along the predetermined path. Through the design of the guide surface 320, it can be ensured that the sliding piece 300 can accurately reach the locking position during sliding. Once the sliding piece 300 reaches the locking position, the position of the sliding piece 300 will be fixed to prevent accidental movement or disengagement from the plug-in. The arrangement of the guide surface 320 makes the sliding process of the sliding piece 300 smoother and easier to control.

[0068] In some examples, referring to FIGS. 1 and 2, the sliding piece 300 is provided with a protective cover 340, and the second fixing piece 410, the third fixing piece 420 and the elastic piece 430 are located in the protective cover 340. The arrangement of the protective cover 340 realizes the protection of the second fixing piece 410, the third fixing piece 420 and the elastic piece 430, improves the stability of the anti-disengagement assembly 400, and also has the effect of neatness and beauty.

[0069] In other examples, the protective cover 340 is provided with at least two operation openings 341, and the second fixing piece 410 and the third fixing piece 420 correspond to the operation openings 341 respectively. When the operator needs to work inside the protective cover 340, the operation opening 341 can be directly operated without removing the entire protective cover 340 or disassembling other components, which not only improves the operation convenience, but also protects the internal components from external interference and damage.

[0070] In addition, referring to FIG. 1, the plate body 100 is fixed with a second stop piece 110, which is configured such that when the sliding piece 300 abuts against the second stop piece 110, the sliding piece 300 is in the unlocked position. The second stop piece 110 is arranged at the end of the plate body 100 away from the connecting assembly 200.

[0071] When it is necessary to unlock the sliding piece 300, the operator can manually push or pull the sliding piece 300 to slide on the plate body 100, and when the sliding piece 300 abuts against the second stop piece 110, the sliding piece 300 is in the unlocked position. At this time, the connection state of the sliding piece 300 and the contact plate 11 is cancelled, and the plate body 100 can be removed. The arrangement of the second stop piece 110 ensures that the sliding piece 300 will not slide excessively or move accidentally during unlocking.

[0072] In some examples, a limiting hole 330 is formed on any one of the sliding piece 300 and the plate body 100, the limiting hole 330 is arranged along the sliding direction of the sliding piece 300, and the other one is provided with a limiting piece 120 which is arranged to slide in the limiting hole 330; the limiting hole 330 is provided with a locking position and an unlocking position, and the limiting piece 120 is configured to be in the locked position when sliding to the locking position, and in the unlocked position when sliding to the unlocking position.

[0073] The limiting hole 330 is arranged along the sliding direction of the sliding piece 300, which provides a clear sliding path for the limiting piece 120 and ensures the stability and directionality of the sliding piece 300 when moving. The limiting hole 330 is provided with a locking position and an unlocking position, and when the limiting piece 120 slides to the locking position, a stable connection is formed between the sliding piece 300 and the plate body 100, i.e. the sliding piece 300 is in the locked position; when the limiting piece 120 slides to the unlocking position, the connection between the sliding piece 300 and the plate body 100 is released, i.e. the sliding piece 300 is in the unlocked position.

[0074] When it is necessary to lock the sliding piece 300, the sliding piece 300 is in the locked position under the action of the elastic piece 430, and at this time the limiting piece 120 is located at the locking position; when it is necessary to unlock the sliding piece 300, the operator can push or pull the sliding piece 300 in the opposite direction by hand, and with the movement of the sliding piece 300, the limiting piece 120 and the limiting hole 330 also slide relatively, and when the limiting piece 120 slides to the unlocking position, the limiting piece 120 is located at the unlocking position, at which time the plate body 100 can be removed or subsequent operations can be performed.

[0075] In addition, as shown in FIGS. 1 and 2, the plate body 100 is provided with a support frame 140, which is configured to abut against the circuit board 20 when the plate body 100 and the circuit board 20 are connected.

[0076] The support frame 140 provides a stable support platform for the circuit board 20, ensuring that the circuit board 20 can maintain a flat and stable state when connected to the plate body 100, and at the same time, the support frame 140 can bear part of the stress when the circuit board 20 is connected to the plate body 100, reducing the risk of deformation and damage of the circuit board 20 due to external forces or vibration and other unexpected situations.

[0077] The fixing structure of the circuit board provided by the embodiment of the application first fixes the circuit board 20 on the mounting seat 130 on the plate body 100 through a bolt, when it is needed to connect the circuit board 20 and the expansion card 10, the plate body 100 moves along the guide groove on the contact plate 11 towards the expansion card 10, under the elastic action of the elastic member 430, the protruding member 2121 and the first fixing member 220 are buckled, the installation and the limiting of the connecting member 210 are completed, the fixing of the plate body 100 and the case 30 is realized, the guiding surface 320 is in contact with the contact plate 11, the sliding member 300 reaches the locking position along the guiding surface 320, the fixing between the plate body 100 and the contact plate 11 is realized, that is, the stable connection between the circuit board 20 and the expansion card 10 is realized; when it is needed to separate the circuit board 20 from the expansion card 10, the elastic member 430 is pulled towards the direction of the first stop member 213, the elastic part 212 is deformed, the buckling state between the protruding member 2121 and the first fixing member 220 is cancelled, that is, the fixing between the plate body 100 and the case 30 is unlocked, the sliding member 300 is pulled towards the direction of the second stop member 110, the matching groove 310 is separated from the barb 12 on the contact plate 11, that is, the fixing between the plate body 100 and the contact plate 11 is unlocked, the convenience of dismounting the plate body 100 is improved, other tools are not needed, and the bolt does not need to be screwed, so that the installation and the dismounting between the circuit board 20 and the expansion card 10 are facilitated.

[0078] On the other hand, the embodiment of the application further provides a case 30, which can be the case of a computer.

[0079] The case 30 can include the fixing structure of the circuit board in the above embodiment. Optionally, the fixing structure of the circuit board on the case 30 can be provided with one or more according to actual application, each fixing structure corresponds to one circuit board 20 and one expansion card 10, and multiple fixing structures respectively fix each group of circuit board 20 and expansion card 10 on the case 30.

[0080] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the technology disclosed herein.

[0081] The embodiments of the application are intended to cover any variations, uses or adaptive changes of the embodiments of the application, which follow the general principles of the embodiments of the application and include common knowledge or conventional technical means in the technical field of the application not disclosed by the embodiments of the application.

[0082] The specification and embodiments are only regarded as exemplary, and the true scope and spirit of the embodiments of the application are indicated by the following claims.

[0083] It should be understood that the embodiments of the present application are not limited to the precise construction that has been described above and shown in the accompanying drawings and that various modifications and changes can be made by those of ordinary skill in the art without departing from the scope of this application. The scope of the application should be limited only by the appended claims.

Claims

1. A fixing structure of a circuit board for connecting an expansion card (10) and a circuit board (20), the expansion card (10) being provided with a contact board (11), characterized in that, The fixing structure comprises: a plate body (100) for connecting the circuit board (20); a connecting assembly (200) comprising a connecting piece (210) and a first fixing piece (220) arranged in cooperation with the connecting piece (210), the connecting piece (210) being fixed to any one of the plate body (100) and a case (30), the first fixing piece (220) being fixed to the other one, the first fixing piece (220) being configured to be connected or disconnected with the first fixing piece (220) when the connecting piece (210) is in a preset position; a sliding piece (300) slidingly arranged on the plate body (100), the sliding piece (300) being configured to be connected or disconnected with the contact plate (11) when the sliding piece (300) is in a locked or unlocked position.

2. The fixing structure for a circuit board according to claim 1, wherein The connecting piece (210) comprises a fixed part (211) and an elastic part (212) connected to the fixed part (211), the fixed part (211) connecting the plate body (100), the elastic part (212) being provided with a protruding piece (2121), the protruding piece (2121) being configured to be buckled with the first fixing piece (220) under the elastic action of the elastic part (212) when the connecting piece (210) is in the preset position, so as to limit the connecting piece (210).

3. The fixing structure for a circuit board according to claim 2, wherein The connecting piece (210) further comprises a first stop piece (213) fixed on the fixed part (211), the elastic part (212) being configured to cancel the buckling of the protruding piece (2121) with the first fixing piece (220) when abutting against the first stop piece (213).

4. The fixing structure for a circuit board according to claim 1, wherein One end of the sliding piece (300) is provided with a cooperation groove (310), the cooperation groove (310) being used for plugging or unplugging with the barb (12) on the contact plate (11).

5. The fixing structure for a circuit board according to claim 4, wherein Further comprising an anti-disconnection assembly (400) for preventing the sliding piece (300) and the expansion card (10) from unplugging.

6. The fixing structure for a circuit board according to claim 5, wherein The anti-disconnection assembly (400) comprises: a second fixing piece (410) fixed on the sliding piece (300); a third fixing piece (420) fixed on the plate body (100); an elastic piece (430) connecting the second fixing piece (410) and the third fixing piece (420), the elastic piece (430) being configured to be in a locked or unlocked position when being in a natural or compressed state.

7. The fixing structure for a circuit board according to claim 6, wherein The bottom of the sliding piece (300) is provided with a guide surface (320), the guide surface (320) being arranged at one end of the sliding piece (300) provided with the cooperation groove (310), the guide surface (320) being configured to contact the contact plate (11) to drive the sliding piece (300) to slide during the movement of the plate body (100) towards the expansion card (10), so as to make the sliding piece (300) reach the locked position.

8. The fixing structure for a circuit board according to any one of claims 1 to 7, characterized in that, The plate body (100) is fixed with a second stop member (110), and the second stop member (110) is configured to be abutted by the sliding member (300) when the sliding member (300) is in an unlocked position.

9. The fixing structure for a circuit board according to any one of claims 1 to 7, wherein Any one of the sliding member (300) and the plate body (100) is provided with a limiting hole (330) arranged along the sliding direction of the sliding member (300), and the other is provided with a limiting member (120) slidingly arranged in the limiting hole (330). The limiting hole (330) is provided with a locking position and an unlocking position, and the limiting member (120) is configured to be in a locked position when sliding to the locking position, and in an unlocked position when sliding to the unlocking position.

10. The fixing structure for a circuit board according to any one of claims 1 to 7, wherein The plate body (100) is provided with a support frame (140), and the support frame (140) is configured to be abutted by the circuit board (20) when the plate body (100) and the circuit board (20) are connected.

11. A cabinet (30) characterized by The application further discloses a fixing structure of the circuit board. The fixing structure of the circuit board according to any one of claims 1-10.

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