A computer mainboard fixing structure

Abstract

The application relates to the technical field of computer mainboard fixing, and discloses a computer mainboard fixing structure which comprises a case body and a mainboard body, the case body is internally provided with a case mounting plate, and further comprises: a fixing back plate used for fixing the mainboard body; during the process that the computer mainboard is installed in the case, the rollers on the two sides of the fixing back plate are clamped into the clamping grooves of the guide frame, the fixing back plate is horizontally limited through the limiting pieces, the fixing back plate is fixed by pressing the positioning plate of the positioning assembly, the locking assembly synchronously locks the positioning assembly, the installation and dismounting operation of the computer mainboard in the case is more convenient, screw alignment and tightening operation which is inconvenient to operate is not needed, during the installation and dismounting process in the case, no installation tool and dismounting screw are needed, so that the risk of scratch of the computer mainboard and loss of the screw is reduced, and the use effect is better.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of computer mainboard fixing, and particularly relates to a computer mainboard fixing structure. BACKGROUND

[0002] The computer mainboard is the core connection and control center of the computer hardware system, is equivalent to the'skeleton and nerve network' of the computer, provides physical installation interfaces for CPU, memory, a graphics card, a hard disk and all core accessories, coordinates data transmission, power distribution and function control among the accessories through a built-in chip set, and is a key carrier for ensuring the cooperative work of the computer hardware.

[0003] In the prior art, the computer mainboard is generally fixed to the inner wall of the case, and the computer mainboard is fixed through the copper column and the screw built in the case. However, in the fixing process of the computer mainboard, the operation freedom is limited due to the small space in the case, the fixing hole on the computer mainboard is difficult to align with the copper column, the screw is difficult to pass through the fixing hole and be screwed into the copper column, and the fixing operation is inconvenient, so that the installation efficiency of the computer mainboard in the case is low. In addition, in the subsequent replacement of the computer mainboard accessories such as the heat dissipation device and the CPU and the plugging and unplugging of the mainboard connector, the computer mainboard needs to be taken out of the case for the convenience of part of the operation. However, a plurality of screws need to be repeatedly disassembled during the disassembly, which is troublesome. In addition, the installation tool and the screw are easy to scratch the computer mainboard due to the small space and the inconvenient operation during the installation and disassembly of the computer mainboard in the case. In addition, the disassembled screws are also at risk of being lost due to the small size.

[0004] Therefore, the technical personnel in the field propose a computer mainboard fixing structure to solve the problems in the background. SUMMARY

[0005] The application aims to provide a computer mainboard fixing structure to solve the problems in the background.

[0006] To achieve the above-mentioned purpose, the application provides the following technical scheme.

[0007] A computer mainboard fixing structure comprises a case body and a mainboard body, the case body is provided with a case mounting plate, and further comprises:

[0008] A fixing back plate is used for fixing the mainboard body, one side of the fixing back plate is provided with rotating shafts at both ends, the rotating shafts are provided with rollers, the case mounting plate is provided with two guide frames corresponding to the rollers and horizontally distributed, guide grooves matched with the rollers are formed in the guide frames, the guide frames are provided with sliding members in the interiors, the sliding members are connected with extrusion blocks in the guide grooves, and the other side of the fixing back plate is provided with limiting members at both ends.

[0009] Positioning assembly, which is arranged on the chassis mounting plate and close to one side of the guide frame, is used for positioning the fixed back plate;

[0010] Locking assembly, which is arranged on the positioning assembly and the fixed back plate, is used for locking the positioning assembly.

[0011] As a preferred technical scheme of the present application, the fixed back plate is provided with a plurality of copper columns corresponding to the main plate body.

[0012] As a preferred technical scheme of the present application, the limiting piece includes a clamping block arranged at two ends of the fixed back plate away from the rotating shaft, and the chassis mounting plate is provided with two limiting frames corresponding to the clamping block, and the limiting frame is provided with a clamping groove matched with the clamping block.

[0013] As a preferred technical scheme of the present application, the positioning assembly includes a supporting frame arranged on the chassis mounting plate and close to one side of the guide frame, a movable shaft rotatably arranged on the supporting frame, and a positioning plate arranged on the movable shaft, and the two sides of the supporting frame are provided with an inner cavity, and the inner cavity is provided with a torsion spring connected with the movable shaft.

[0014] As a preferred technical scheme of the present application, the locking assembly includes a locking plate, a movable plate and a locking block, the locking plate is provided with a locking groove matched with the locking block, the locking block is fixedly connected with the movable plate, and the movable plate is connected with the positioning plate through the elastic piece.

[0015] As a preferred technical scheme of the present application, the elastic piece includes two fixed rods symmetrically arranged in the positioning plate, a sliding frame slidably arranged on the fixed rod, and two connecting rods connected with the movable plate and arranged on the sliding frame, and the sliding frame is connected with the inner wall of the positioning plate through the second elastic piece.

[0016] As a preferred technical scheme of the present application, the guide frame is provided with an extrusion assembly connected with the extrusion block, the extrusion assembly includes a sleeve arranged on the inner wall of the guide frame, a sliding cavity is arranged in the sleeve, a sliding plate is slidably connected with the sliding cavity, the sliding plate is fixedly connected with a sliding rod, the sliding rod is slidably matched with the sleeve, the sliding rod is connected with the extrusion block, and the sliding cavity is provided with a first elastic piece connected with the sliding plate.

[0017] As a preferred technical scheme of the present application, the sliding piece includes a sliding groove arranged in the guide frame, and a sliding block slidably arranged in the sliding groove and connected with the extrusion block.

[0018] The present application has the following advantages: the present application fixes the mainboard body on the fixed back plate outside the case body in advance through screws, so that only the fixed back plate needs to be fixed in the case subsequently, and in the process of installing the computer mainboard in the case, only the rollers on both sides of the fixed back plate need to be clamped into the clamping grooves of the guide frame, and after the fixed back plate is limited and placed through the limiting piece, the fixed back plate can be fixed by pressing the positioning plate of the positioning assembly, and the locking assembly will lock the positioning assembly synchronously, so that the installation and disassembly operation of the computer mainboard in the case is more convenient, without inconvenient screw alignment and tightening operation, and without the need for installation tools and disassembly screws during installation and disassembly in the case, thereby reducing the risk of scratching the computer mainboard and losing screws during installation and disassembly, and the use effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view of a computer mainboard fixing structure.

[0020] Figure 2 It is a structural schematic view of a computer mainboard fixing structure without a case body.

[0021] Figure 3 It is a structural schematic view of the cooperation between the fixed back plate and the mainboard body in a computer mainboard fixing structure.

[0022] Figure 4 It is a structural schematic view of the cooperation between the fixed back plate and the case mounting plate in a computer mainboard fixing structure.

[0023] Figure 5 It is a structural schematic view of the inside of a guide frame in a computer mainboard fixing structure.

[0024] Figure 6 It is a sectional view of the inside of a guide frame in a computer mainboard fixing structure.

[0025] Figure 7 It is a structural schematic view of the cooperation between the limiting frame and the clamping block in a computer mainboard fixing structure.

[0026] Figure 8 It is a structural schematic view of the cooperation between the positioning assembly and the locking assembly in a computer mainboard fixing structure.

[0027] Figure 9 It is a structural schematic view of the cooperation between the movable shaft and the torsional spring in a computer mainboard fixing structure.

[0028] In the figure: 101, the case body; 102, the case mounting plate; 103, the fixed back plate; 104, the copper column; 105, the mainboard body; 201, the guide frame; 202, the guide groove; 203, the rotating shaft; 204, the roller; 205, the extrusion block; 206, the sliding block; 207, the sliding groove; 3, the extrusion assembly; 301, the sleeve; 302, the sliding cavity; 303, the sliding plate; 304, the sliding rod; 305, the first elastic piece; 401, the limiting frame; 402, the clamping groove; 403, the clamping block; 5, the positioning assembly; 501, the support frame; 502, the movable shaft; 503, the positioning plate; 504, the inner cavity; 505, the torsional spring; 6, the locking assembly; 601, the locking plate; 602, the locking groove; 603, the locking block; 604, the movable plate; 605, the connecting rod; 606, the sliding frame; 607, the fixed rod; 608, the second elastic piece. DETAILED DESCRIPTION

[0029] The technical solutions of the present application will be further described in detail below in combination with specific embodiments.

[0030] Please refer to Figures 1-9 A computer mainboard fixing structure, comprising a case body 101 and a mainboard body 105, the case body 101 is provided with a case mounting plate 102, further comprising:

[0031] The fixed back plate 103 is used for fixing the mainboard body 105, one side of the fixed back plate 103 is provided with rotating shafts 203 at both ends, the rotating shafts 203 are installed with rollers 204, the case mounting plate 102 is installed with two guide frames 201 corresponding to the rollers 204 and horizontally distributed, the guide frames 201 are provided with guide grooves 202 matched with the rollers 204, the inner wall of the guide grooves 202 and the surface of the rollers 204 are smooth surfaces, so as to reduce the friction of the rollers 204 when rolling in the guide grooves 202, the inside of the guide frames 201 is provided with sliding members, the sliding members are connected with extrusion blocks 205 in the guide grooves 202, the surface of the extrusion blocks 205 is an arc surface, the other side of the fixed back plate 103 is provided with limiting members at both ends;

[0032] The positioning assembly 5 is arranged on the case mounting plate 102 and close to one side of the guide frame 201, and is used for positioning the fixed back plate 103;

[0033] The locking assembly 6 is arranged on the positioning assembly 5 and the fixed back plate 103, and is used for locking the positioning assembly 5.

[0034] The application fixes the mainboard body 105 on the fixed back plate 103 outside the case body 101 in advance through screws, so that the fixed back plate 103 can be fixed in the case subsequently, and in the process of installing the computer mainboard in the case, only the rollers 204 on both sides of the fixed back plate 103 need to be clamped into the clamping grooves 402 of the guide frame 201, and the fixed back plate 103 is limited to be placed through the limiting piece, and the fixed back plate 103 can be fixed by pressing the positioning assembly 5, and the locking assembly 6 can lock the positioning assembly 5 synchronously, so that the installation and disassembly operation of the computer mainboard in the case is more convenient, without inconvenient screw alignment and tightening operation, and without the need for installation tools and disassembly screws during installation and disassembly in the case, so that the risk of scratching the computer mainboard and losing the screws is reduced, and the use effect is better.

[0035] In one case of the embodiment, please refer to Figure 3 The fixed back plate 103 is provided with a plurality of copper columns 104 corresponding to the mainboard body 105.

[0036] The copper columns 104 installed on the fixed back plate 103 correspond to the fixing holes on the mainboard body 105, and the copper columns 104 are provided with threaded holes.

[0037] When the mainboard body 105 is installed, the mainboard body 105 can be placed on the fixed back plate 103 outside the case first, the fixing holes of the mainboard body 105 are aligned with the threaded holes of the copper columns 104, then the screws are passed through the fixing holes of the mainboard body 105 and screwed into the threaded holes of the copper columns 104 to complete the fixation of the mainboard body 105 outside the case. There is enough operation space to fix the mainboard body 105 on the fixed back plate 103 outside the case, and the operation is more convenient, and then the fixed back plate 103 is installed in the case.

[0038] The mainboard body 105 is pre-fixed on the fixed back plate 103, so that only the fixed back plate 103 needs to be fixed on the case mounting plate 102 in the case body 101, and the whole fixation operation of the computer mainboard can be completed, and the mainboard body 105 does not need to be installed during installation in the case body 101, so that the risk of scratching the mainboard body 105 during installation in the case can be effectively reduced.

[0039] When the accessories on the mainboard body 105 are replaced and the plug-in connector is needed to be pulled out, the fixed backboard 103 is only needed to be disassembled from the case body 101, and the fixed backboard 103 also provides good back support for the mainboard body 105, which is convenient for replacing the accessories and the plug-in connector, and only when the mainboard is replaced or repaired, the mainboard body 105 needs to be disassembled from the fixed backboard 103, and in other cases, the mainboard body 105 can be disassembled from the fixed backboard 103.

[0040] In one case of the embodiment, please refer to Figure 2 、 Figure 3 、 Figure 4 and Figure 7 , the limiting piece includes a clamping block 403 installed at both ends of the fixed backboard 103 away from the rotating shaft 203, and the case mounting plate 102 is provided with two limiting racks 401 corresponding to the clamping block 403, and the limiting rack 401 is provided with a clamping groove 402 matched with the clamping block 403.

[0041] The two clamping blocks 403 are L-shaped and located at the upper and lower ends of the left side of the fixed backboard 103, and the rollers 204 are located at the upper and lower ends of the right side of the fixed backboard 103.

[0042] When the fixed backboard 103 provided with the mainboard body 105 is placed on the case mounting plate 102 for installation, the rollers 204 at both ends of the right side of the fixed backboard 103 can be clamped into the guide groove 202 of the guide rack 201, and the rollers 204 will roll along the guide groove 202, and when the rollers 204 are moved to the appropriate position, that is, the fixed backboard 103 can be completely placed on the case mounting plate 102 and the limiting rack 401 does not interfere with the clamping block 403, the fixed backboard 103 is completely placed on the case mounting plate 102, and at this time, the clamping block 403 at both ends of the left side of the fixed backboard 103 is aligned with the clamping groove 402 of the limiting rack 401, and the clamping block 403 is completely clamped into the clamping groove 402 of the limiting rack 401 by pushing the fixed backboard 103 to move to the left side, and the fixed backboard 103 is limited on the case mounting plate 102 by the limiting of the guide groove 202 to the rollers 204, so that the fixed backboard 103 is fixed by the positioning assembly 5.

[0043] In one case of the embodiment, please refer to Figures 8-9 , the positioning assembly 5 includes a support rack 501 installed on the case mounting plate 102 and close to one side of the guide rack 201, a movable shaft 502 rotatably arranged on the support rack 501, a positioning plate 503 installed on the movable shaft 502, and an inner cavity 504 formed on both sides of the support rack 501, and a torsional spring 505 connected with the movable shaft 502 is arranged in the inner cavity 504.

[0044] Due to the action of the torsion spring 505, the movable shaft 502 is subjected to torsion elastic force, so that in the initial state, the positioning plate 503 is away from the case mounting plate 102 and is in an inclined state under the action of the torsion elastic force, so that in the process of laying the fixed back plate 103, the activity of the fixed back plate 103 is not affected by the limitation of the positioning plate 503.

[0045] Specifically, when the fixed back plate 103 is completely laid on the case mounting plate 102, and the clamping blocks 403 at the left two ends of the fixed back plate 103 are also completely clamped into the clamping grooves 402 of the limiting frame 401, at this time, the positioning plate 503 is pressed to one side of the case mounting plate 102, the positioning plate 503 rotates around the movable shaft 502, until the positioning plate 503 is laid on the case mounting plate 102, at this time, the end of the positioning plate 503 away from the movable shaft 502 is just abutted against the right side surface of the fixed back plate 103, cooperating with the limiting frame 401 and the guide frame 201, the fixed back plate 103 can be limited and fixed, at the same time, the locking assembly 6 will lock the positioning assembly 5, to avoid the positioning assembly 5 from moving abnormally, so as to complete the fixing operation of the fixed back plate 103 in the case, that is, the fixing of the computer mainboard is completed.

[0046] In one case of the embodiment, please refer to Figure 8 The locking assembly 6 includes a locking plate 601, a movable plate 604 and a locking block 603, the locking plate 601 is provided with a locking groove 602 matched with the locking block 603, the locking block 603 is fixedly connected with the movable plate 604, and the movable plate 604 is connected with the positioning plate 503 through an elastic piece.

[0047] The top of the locking plate 601 is provided with an inclined surface, when the positioning plate 503 is pressed to rotate towards the case mounting plate 102, the locking block 603 will be in contact with the inclined surface of the locking plate 601, and with the rotation of the positioning plate 503, the locking plate 601 will gradually push the locking block 603, so that the locking block 603 presses the elastic piece, and when the positioning plate 503 is rotated to the laid state and completes the limiting and fixing of the fixed back plate 103, the locking block 603 is opposite to the locking groove 602, and under the action of the elastic piece, the locking block 603 will be automatically clamped into the locking groove 602, so that the laid positioning plate 503 can be locked, to avoid the abnormal movement of the positioning plate 503.

[0048] When the fixed backboard 103 needs to be disassembled, the movable plate 604 is only needed to be pushed, the locking block 603 is pulled by the movable plate 604, the locking block 603 is out of the locking slot 602, then under the torsional elastic force of the torsion spring 505, the fixed plate 503 is rotated by the movable shaft 502 to the side away from the cabinet mounting plate 102, so that the fixed of the fixed backboard 103 is limited by the positioning plate 503, then the clamping block 403 of the fixed backboard 103 is out of the clamping slot 402 of the limiting frame 401, and the roller 204 is out of the guide slot 202, so that the disassembly of the fixed backboard 103 is completed, and the disassembly and assembly process is relatively convenient.

[0049] Further, the elastic member includes two fixed rods 607 symmetrically arranged in the positioning plate 503, a sliding frame 606 is slidably arranged on the fixed rod 607, two connecting rods 605 connected with the movable plate 604 are arranged on the sliding frame 606, and the sliding frame 606 is connected with the inner wall of the positioning plate 503 through a second elastic member 608.

[0050] Under the elastic force of the second elastic member 608, the sliding frame 606 is elastically forced away from the side of the movable shaft 502, so that the sliding frame 606 is located at the end of the fixed rod 607 away from the movable shaft 502, the second elastic member 608 is convenient for pushing the sliding frame 606 to reset along the fixed rod 607, so that the movable plate 604 is pushed to reset by the connecting rod 605, and the locking block 603 on the movable plate 604 is synchronously reset.

[0051] It should be noted that the specific structure of the second elastic member 608 is not limited, and in the embodiment, the second elastic member 608 is a spring.

[0052] In one case of the embodiment, referring to Figures 3-5 The guide frame 201 is provided with an extrusion assembly 3 connected with the extrusion block 205, the extrusion assembly 3 includes a sleeve 301 arranged on the inner wall of the guide frame 201, a sliding cavity 302 is formed in the sleeve 301, a sliding plate 303 is slidably connected with the sliding cavity 302, the sliding plate 303 is fixedly connected with a sliding rod 304, the sliding rod 304 is slidably connected with the sleeve 301, the sliding rod 304 is connected with the extrusion block 205, and a first elastic member 305 connected with the sliding plate 303 is arranged in the sliding cavity 302.

[0053] In the initial state, under the elastic force of the first elastic member 305, the sliding plate 303 is located at the end of the sliding cavity 302 close to the extrusion block 205, and the extrusion block 205 at the end of the sliding rod 304 is located at the side of the guide slot 202 away from the sleeve 301.

[0054] When the roller 204 enters the guide slot 202 and rolls to one side of the sleeve 301 along the guide slot 202, the roller 204 will be in contact with the extrusion block 205 and push the extrusion block 205 to move to one side of the sleeve 301, so that the sliding rod 304 pushes the sliding plate 303 to slide in the sliding cavity 302 and extrudes the first elastic member 305, until the fixed back plate 103 can be placed flat on the case mounting plate 102, so that the clamping block 403 on the fixed back plate 103 is aligned with the clamping groove 402 of the limiting frame 401, at this time, under the elastic force of the first elastic member 305, the sliding plate 303 is pushed to move along the sliding cavity 302, so that the sliding rod 304 can push the extrusion block 205 to move along the guide slot 202, thereby pushing the roller 204 to move, so that the clamping blocks 403 at both ends of the left side of the fixed back plate 103 are completely clamped into the clamping grooves 402 of the limiting frame 401, realizing the limiting of the fixed back plate 103.

[0055] It should be noted that the specific structure of the first elastic member 305 is not limited, and in the embodiment, the first elastic member 305 is provided as a spring.

[0056] Further, the sliding member comprises a sliding groove 207 opened in the guide frame 201, and a sliding block 206 is slidably arranged in the sliding groove 207, and the sliding block 206 is connected with the extrusion block 205.

[0057] During the movement of the extrusion block 205 in the guide slot 202, the sliding block 206 connected with the extrusion block 205 will slide along the sliding groove 207, so that the stability of the movement of the extrusion block 205 can be improved.

[0058] In use, the main plate body 105 is fixed on the fixed back plate 103 by the copper column 104 on the fixed back plate 103 and cooperation with screws outside the case, so that the main plate body 105 is integrated with the fixed back plate 103, so that only the fixed back plate 103 needs to be fixed in the case in the subsequent process, and when the fixed back plate 103 is installed, the fixed back plate 103 is placed obliquely, and the two rollers 204 at both ends of the fixed back plate 103 are respectively slid into the guide slots 202 of the two guide frames 201, until the rollers 204 are in contact with the extrusion blocks 205 in the guide frames 201, then the rollers 204 are further pushed by the fixed back plate 103, so that the rollers 204 push the extrusion assembly 3, until the fixed back plate 103 can be placed flat on the case mounting plate 102 and there is no position interference between the fixed back plate 103 and the limiting member, at this time, under the elastic force of the extrusion assembly 3, the fixed back plate 103 can be pushed so that the clamping blocks 403 at both ends are clamped into the clamping grooves 402 of the limiting frame 401, thereby completing the limiting of the fixed back plate 103.

[0059] When the fixed back plate 103 completes the laying operation, the positioning plate 503 can be pressed to one side of the case mounting plate 102, so that the positioning plate 503 is laid on the case mounting plate 102, and the laid positioning plate 503 just abuts against the side wall of the fixed back plate 103 limited, so that the fixed back plate 103 can be fixed by cooperating with the limiting piece and the guide frame 201, and the locking assembly 6 also automatically locks the positioning assembly 5 during the process of pressing the positioning plate 503 to lay down, thereby avoiding the positioning plate 503 of the positioning assembly 5 from moving abnormally to cause fixing failure, and when the computer mainboard needs to be disassembled from the case, only the locking assembly 6 needs to be pulled, the locking of the positioning plate 503 of the positioning assembly is released by pulling the locking assembly 6, so that the positioning plate 503 of the positioning assembly 5 can rotate away from the side of the case mounting plate 102, so that the fixing of the fixed back plate 103 can be released, then the reverse operation can be performed to separate the fixed back plate 103 from the limiting piece and the guide frame 201, and the disassembly is realized, so that the computer mainboard can be taken out from the case, and the mainboard body 105 on the fixed back plate 103 can be conveniently replaced or the plug is pulled out.

[0060] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the application. The embodiments should, therefore, be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and it is intended to encompass all changes and modifications that fall within the meaning and scope of equivalents of the claims. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0061] Furthermore, it should be understood that, although the present specification is described in terms of embodiments, not every implementation can contain all of the features that are described in those embodiments, and not every implementation can be comprised of the same combinations of the features that are described in the embodiments. The description is presented for purposes of illustration and description, and is not intended to be exhaustive or to limit the application to the precise form disclosed. Many modifications and variations are possible in light of the above teaching.

Claims

1. A computer mainboard fixing structure comprising a case body and a mainboard body, a case mounting plate being arranged in the case body, characterized in that, Also include: The fixed back plate is used for fixing the main plate body, one side of the fixed back plate is rotatably provided with a rotating shaft, a roller is installed on the rotating shaft, two guide frames corresponding to the rollers and horizontally distributed are installed on the case mounting plate, guide grooves matched with the rollers are formed in the guide frames, a sliding member is arranged in the guide frame, the sliding member is connected with an extrusion block in the guide groove, and limit pieces are arranged at both ends of the other side of the fixed back plate; The positioning assembly is arranged on the case mounting plate and close to one side of the guide frame, and is used for positioning the fixed back plate; The locking assembly is arranged on the positioning assembly and the fixed back plate, and is used for locking the positioning assembly.

2. The computer mainboard fixing structure according to claim 1, wherein, A plurality of copper columns corresponding to the main plate body are installed on the fixed back plate.

3. The computer mainboard fixing structure according to claim 2, wherein, The limit piece includes a clamping block installed at both ends of the side of the fixed back plate away from the rotating shaft, and two limiting frames corresponding to the clamping blocks are installed on the case mounting plate, and clamping grooves matched with the clamping blocks are formed in the limiting frames.

4. The computer mainboard fixing structure according to claim 3, wherein, The positioning assembly includes a support frame installed on the case mounting plate and close to one side of the guide frame, a movable shaft rotatably arranged on the support frame, and a positioning plate installed on the movable shaft, and inner cavities are formed at both sides of the support frame, and torsional springs connected with the movable shaft are arranged in the inner cavities.

5. The computer mainboard fixing structure according to claim 4, wherein, The locking assembly includes a locking plate, a movable plate and a locking block, a locking groove matched with the locking block is formed in the locking plate, the locking block is fixedly connected with the movable plate, and the movable plate is connected with the positioning plate through the elastic member.

6. The computer mainboard fixing structure according to claim 5, wherein, The elastic member includes two symmetrically distributed fixed rods installed in the positioning plate, a sliding frame is slidably arranged on the fixed rod, two connecting rods connected with the movable plate are installed on the sliding frame, and the sliding frame is connected with the inner wall of the positioning plate through the second elastic member.

7. The computer mainboard fixing structure according to claim 4, wherein, The guide frame is provided with an extrusion assembly connected with the extrusion block, the extrusion assembly includes a sleeve installed in the inner wall of the guide frame, a sliding cavity is formed in the sleeve, a sliding plate is slidably connected with the sliding cavity, the sliding plate is fixedly connected with a sliding rod, the sliding rod is slidably matched with the sleeve, the sliding rod is connected with the extrusion block, and a first elastic member connected with the sliding plate is arranged in the sliding cavity.

8. The computer mainboard fixing structure according to claim 7, wherein, The sliding member includes a sliding groove formed in the guide frame, a sliding block is slidably arranged in the sliding groove, and the sliding block is connected with the extrusion block.

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