Computer mainboard fixing device and method for computer

Abstract

The invention discloses a computer mainboard fixing device and method for a computer, and relates to the field of computer parts, the computer mainboard fixing device comprises a bottom plate, screw holes II are formed in four corners of the bottom plate, and the four screw holes II are in threaded connection with the middle parts of four hexagon socket screws respectively; the upper ends of the four inner hexagon bolts are connected with the bottom ends of the four fixing mechanisms correspondingly. The mainboard body and the bottom plate are connected and fixed through the fixing mechanism, when the mainboard body is installed in a computer host through the device, the fixing frame and the bottom plate can be connected through hexagon socket screws, and the bottom plate is connected with a related structure in the host; and then the fixing mechanism is used for completing installation of the mainboard body, so that a subsequent user can conveniently and rapidly disassemble and assemble the mainboard body, and the problems that in the prior art, the efficiency of fixing and disassembling the mainboard body through screws is low, and disassembly and assembly are affected due to the fact that the screws are prone to slipping when disassembled and assembled frequently are solved.

Description

Technical Field

[0001] The present invention relates to a computer component, and in particular to a computer mainboard fixing device and method for a computer. Background Art

[0002] Today's society has become an information age. Computers have entered thousands of families, bringing great convenience to our daily lives, allowing people to obtain information very quickly, adding entertainment to families, and bringing convenience to many companies' offices. The motherboard is an indispensable part of the computer. The motherboard, also called the main board, system board, or motherboard, is one of the most basic and important components of the computer. The motherboard is generally a rectangular circuit board, on which the main circuit system of the computer is installed, generally including BIOS chip, I / O control chip, keyboard and panel control switch interface, indicator light connector, expansion slot, DC power supply connector of the motherboard and plug-in card, etc.

[0003] However, current motherboards are usually fixed in the chassis by screws. When the motherboard fails, it is inconvenient for the staff to disassemble the motherboard. The staff use a screwdriver to remove the screws one by one, which is cumbersome and time-consuming, making it inconvenient for maintenance and repair. In addition, the screws are prone to stripping if twisted for a long time, which affects the firmness of the fixation and causes the motherboard to shake and be damaged. Summary of the invention

[0004] The object of the present invention is to provide a computer motherboard fixing device and method for a computer, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a computer motherboard fixing device and method for a computer, comprising a base plate, wherein two screw holes are provided at the four corners of the base plate, the four screw holes are respectively connected to the middle threads of four hexagon socket bolts, the upper ends of the four hexagon socket bolts are respectively connected to the bottom ends of four fixing mechanisms, and the upper ends of the four fixing mechanisms are all connected to the main body of the motherboard.

[0006] As a preferred technical solution of the present invention, each of the fixing mechanisms includes a fixing frame, the bottom surface of the fixing frame overlaps the upper surface of the base plate, and the bottom surface of the fixing frame is provided with a screw hole which is threadedly connected to the hexagon socket bolt.

[0007] As a preferred technical solution of the present invention, the upper surface of the fixing frame overlaps with the bottom surface of the mainboard body, and a fixing groove is opened on the upper surface of the fixing frame, and the bottom end of the fixing groove is fixedly connected to the bottom surface of the hollow column.

[0008] As a preferred technical solution of the present invention, a fixing plate is fixedly provided in the middle of the inner side surface of the hollow column, the middle of the bottom surface of the fixing plate is fixedly connected to the upper ends of telescopic rod 1 and spring 1 at the same time, the spring is set on the outside of telescopic rod 1, and a positioning block 2 is fixedly provided in the middle of one side surface of the fixing frame.

[0009] As a preferred technical solution of the present invention, the bottom ends of the telescopic rod 1 and the spring 1 are fixedly connected to the upper surface of the lifting plate, the front and rear ends of the lifting plate are respectively fixedly connected to the opposite ends of the two limit blocks, and the middle parts of the two limit blocks are respectively sleeved in the two through grooves.

[0010] As a preferred technical solution of the present invention, the two through grooves are both opened on the wall of the hollow column, the opposite ends of the two limit blocks are respectively connected to the two limit grooves, the two limit grooves are both opened on the upper surface of the fixed frame and the opposite ends of the two limit grooves are connected to the fixed groove.

[0011] As a preferred technical solution of the present invention, the hollow column is sleeved in the mounting hole opened on the main board body, the upper end of the hollow column is sleeved with the connecting cover, the bottom surface of the connecting cover overlaps with the upper surface of the main board body, and a positioning block is fixedly provided on the outer side surface of the connecting cover. The middle part of the upper surface of the connecting cover is rotatably connected to the upper end of the sleeve through a bearing, and the bottom end of the sleeve is fixedly connected to the middle part of the turntable.

[0012] As a preferred technical solution of the present invention, the bottom surface of the turntable is fixedly connected to the upper ends of the two telescopic rods 2 and the two springs 2 at the same time, the bottom ends of the two telescopic rods 2 and the two springs 2 are fixedly connected to the upper surface of the limit plate 1, the two springs 2 are respectively sleeved on the outsides of the two telescopic rods 2, the middle part of the upper surface of the limit plate 1 is fixedly connected to the bottom end of the rotating shaft, the rotating shaft is sleeved in the sleeve, a positioning block 3 is fixedly provided on the upper end of the rotating shaft, and a hexagonal groove is provided on the upper surface of the rotating shaft.

[0013] As a preferred technical solution of the present invention, the two ends of the upper surface of the limit plate 1 are overlapped with the bottom surfaces of the two baffle plates 1 respectively, and the two baffle plates 1 are provided with plug holes, and the two plug holes are respectively plugged with two plug rods, and the bottom ends of the two plug rods are fixedly connected to the upper surface of the limit plate 1, and the opposite ends of the two baffle plates 1 are fixedly connected to the inner side surface of the hollow column;

[0014] The inner side surface of the hollow column is also fixedly connected to the opposite ends of the two baffle plates 2, the bottom surfaces of the two baffle plates 2 are overlapped with the bottom ends of the two limit plates 2 respectively, the upper ends of the two limit plates 2 are fixedly connected to the upper inner side surface of the connecting cover, the angle between the baffle plate 2 and the baffle plate 1 is ninety degrees, the baffle plate 2 is located above the baffle plate 1, the bottom end of the limit plate 2 is located between the baffle plate 2 and the baffle plate 1, and the length of the limit plate 1 is less than the length between the opposite ends of the two baffle plates 2.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention connects and fixes the mainboard body and the bottom plate by setting a fixing mechanism. When the mainboard body is installed inside the computer host by using the device, the fixing frame and the bottom plate can be connected by using hexagon socket bolts, and the bottom plate can be connected to the relevant structure in the host. Then, the mounting hole on the mainboard body is sleeved with the hollow column to limit the horizontal displacement of the mainboard body. At this time, the connecting cover is sleeved with the hollow column so that the bottom end of the connecting cover contacts the mainboard body, and the position of the connecting cover is limited by the cooperation of the limiting plate 1, the limiting plate 2, the baffle plate 1, the baffle plate 2, the plug rod and the plug hole. Thus, the mainboard body is limited by the connecting cover to limit the displacement in the up and down directions, and the installation of the mainboard body is completed, so that the subsequent user can quickly disassemble and assemble the mainboard body, which solves the problem that the efficiency of fixing and disassembling the mainboard body with screws in the prior art is low, and the screws are easily stripped due to frequent disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the bottom plate structure of the present invention;

[0019] Figure 3 It is a front view structural schematic diagram of the fixing mechanism of the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the fixing frame of the present invention;

[0021] Figure 5 It is a schematic diagram of the front cross-sectional structure of the hollow column of the present invention;

[0022] Figure 6 It is a schematic diagram of the top view structure of the hollow column of the present invention;

[0023] Figure 7 It is a schematic diagram of the front cross-sectional structure of the limiting cover of the present invention.

[0024] In the figure: 1. bottom plate; 2. main board body; 3. hexagon socket bolt; 4. fixing mechanism; 41. fixing frame; 42. screw hole 1; 43. fixing groove; 44. hollow column; 45. connecting cover; 46. positioning block 1; 47. through groove; 48. limit block; 49. positioning block 2; 410. limit groove; 411. lifting plate; 412. telescopic rod 1; 413. spring 1; 414. fixing plate; 415. limit plate 1; 416. spring 2; 417. telescopic rod 2; 418. limit plate 2; 419. positioning block 3; 420. rotating shaft; 421. baffle 1; 422. socket; 423. baffle 2; 424. rotating plate; 425. plug rod; 426. sleeve; 5. screw hole 2. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-7 The present invention provides a technical solution of a computer motherboard fixing device and method for a computer: comprising a bottom plate 1, four screw holes 5 are provided at the four corners of the bottom plate 1, the four screw holes 5 are respectively threadedly connected to the middle parts of four hexagon socket bolts 3, the upper ends of the four hexagon socket bolts 3 are respectively connected to the bottom ends of four fixing mechanisms 4, and the upper ends of the four fixing mechanisms 4 are all connected to the mainboard body 2.

[0027] Each fixing mechanism 4 includes a fixing frame 41 , the bottom surface of the fixing frame 41 overlaps the upper surface of the bottom plate 1 , and the bottom surface of the fixing frame 41 is provided with a screw hole 42 threadedly connected with the hexagon socket bolt 3 .

[0028] The upper surface of the fixing frame 41 overlaps with the bottom surface of the mainboard body 2 . A fixing groove 43 is formed on the upper surface of the fixing frame 41 . The bottom end of the fixing groove 43 is fixedly connected to the bottom surface of the hollow column 44 .

[0029] A fixing plate 414 is fixedly arranged in the middle of the inner side surface of the hollow column 44, and the middle of the bottom surface of the fixing plate 414 is fixedly connected to the upper ends of the telescopic rod 1 412 and the spring 1 413 at the same time. The spring 1 413 is sleeved on the outer side of the telescopic rod 1 412. A positioning block 2 49 is fixedly arranged in the middle of one side surface of the fixing frame 41. The fixing plate 414 is connected to the lifting plate 411 by setting the telescopic rod 1 412 and the spring 1 413. When installing the main board body 2, the mounting hole on the main board body 2 can be sleeved with the hollow column 44, and the main board body 2 is continuously pressed downward so that The mainboard body 2 pushes the limit block 48 and the lifting plate 411 to descend. When the lifting plate 411 descends, the telescopic rod 412 and the spring 413 are stretched. When the bottom surface of the mainboard body 2 contacts the upper surface of the fixing frame 41, the mainboard body 2 is stopped from being pushed. At this time, the limit block 48 is inserted into the limit groove 410, so that the spring 413 is in a stretched state, so that the tension of the spring 413 applies an upward thrust to the mainboard body 2, and then the mainboard body 2 is tightly clamped and fixed by utilizing the thrust applied by the spring 413 and the limit of the mainboard body 2 by the connecting cover 45.

[0030] The bottom ends of the telescopic rod 412 and the spring 413 are fixedly connected to the upper surface of the lifting plate 411, and the front and rear ends of the lifting plate 411 are respectively fixedly connected to the opposite ends of the two limit blocks 48, and the middle parts of the two limit blocks 48 are respectively sleeved in the two through grooves 47.

[0031] The two through slots 47 are both opened on the wall of the hollow column 44 , and the opposite ends of the two limit blocks 48 are respectively connected with the two limit slots 410 , and the two limit slots 410 are both opened on the upper surface of the fixing frame 41 and the opposite ends of the two limit slots 410 are connected with the fixing groove 43 .

[0032] The hollow column 44 is sleeved in the mounting hole opened on the mainboard body 2, the upper end of the hollow column 44 is sleeved with the connecting cover 45, the bottom surface of the connecting cover 45 overlaps with the upper surface of the mainboard body 2, and a positioning block 1 46 is fixedly provided on the outer side surface of the connecting cover 45. The middle part of the upper surface of the connecting cover 45 is rotatably connected to the upper end of the sleeve 426 through a bearing, and the bottom end of the sleeve 426 is fixedly connected to the middle part of the turntable 424. By setting the positioning block 1 46, the positioning block 2 49 and the positioning block 3 419, it is convenient for the user to judge the relative positions of the limit plate 1 415, the limit plate 2 418, the baffle plate 1 421 and the baffle plate 2 423 by observing the positions of the positioning block 1 46, the positioning block 2 49 and the positioning block 3 419, thereby assisting the user to quickly complete the disassembly and assembly.

[0033] The bottom surface of the rotating disk 424 is fixedly connected to the upper ends of the two telescopic rods 417 and the two springs 416 at the same time. The bottom ends of the two telescopic rods 417 and the two springs 416 are fixedly connected to the upper surface of the limiting plate 415. The two springs 416 are respectively sleeved on the outsides of the two telescopic rods 417. The middle part of the upper surface of the limiting plate 415 is fixedly connected to the bottom end of the rotating shaft 420. The rotating shaft 420 is sleeved in the sleeve 426. A positioning block 3 419 is fixedly provided on the upper end of the rotating shaft 420. A hexagonal groove is provided on the upper surface of the rotating shaft 420. The limiting plate 415 is connected to the rotating disk 424 by arranging the telescopic rods 417 and the springs 416. When the limiting plate 415 is connected to the baffle 421, the user can use the hexagonal wrench to press the rotating shaft 420 downward so that the bottom surface of the positioning block 3 419 is aligned with the sleeve. The upper end of the cylinder 426 contacts, at this time, the limit plate 415 is lower than the height of the baffle 421, and the rotating shaft 420 pushes the limit plate 415 to go down to stretch the spring 2 416 and the telescopic rod 2 417, and then the user can rotate the rotating shaft 420 90 degrees to make the positioning block 3 419 and the positioning block 1 46 be placed at a 90-degree angle, at this time, the limit plate 1 415 is rotated to the bottom of the baffle 1 421, and then the user can take out the hexagonal wrench from the hexagonal groove at the upper end of the rotating shaft 420, at this time, the tension of the spring 2 416 pulls the limit plate 1 415 upward so that the insertion rod 425 is sleeved with the socket 422, and the upper surface of the limit plate 1 415 overlaps with the bottom surface of the baffle 1 421, so that the tension of the spring 2 416 is used to apply an upward pulling force to the limit plate 1 415 so that the insertion rod 425 and the socket 422 remain tightly plugged.

[0034] The two ends of the upper surface of the limiting plate 415 overlap the bottom surfaces of the two baffles 421 respectively. The two baffles 421 are provided with plug holes 422, which are respectively plugged with two plug rods 425. The bottom ends of the two plug rods 425 are fixedly connected to the upper surface of the limiting plate 415, and the opposite ends of the two baffles 421 are fixedly connected to the inner side surface of the hollow column 44.

[0035] The inner side surface of the hollow column 44 is also fixedly connected to the opposite ends of the two baffle plates 423, the bottom surfaces of the two baffle plates 423 are respectively overlapped with the bottom ends of the two limit plates 418, the upper ends of the two limit plates 418 are fixedly connected to the upper inner side surface of the connecting cover 45, the angle between the baffle plate 423 and the baffle plate 421 is ninety degrees, the baffle plate 423 is located above the baffle plate 421, the bottom end of the limit plate 418 is located between the baffle plate 423 and the baffle plate 421, the length of the limit plate 415 is less than the length between the opposite ends of the two baffle plates 423, by setting the limit plate 418 to be connected to the connecting cover 45, and overlapping the limit plate 418 with the baffle plate 423, the up and down movement of the connecting cover 45 is restricted by the overlap of the limit plate 418 and the baffle plate 423, and the stability of the connecting cover 45 is improved.

[0036] The operating steps of the present invention are:

[0037] When using the present device to install the mainboard body 2 inside the computer host, the user can first connect the hexagon socket bolt 3 with the screw hole 1 42 and the screw hole 2 5 to connect and fix the fixing frame 41 with the bottom plate 1, and then use the hexagon socket bolt 3 to fix the bottom plate 1 inside the computer host. At this time, the user can sleeve the mounting hole on the mainboard body 2 with the hollow column 44, and continue to press the mainboard body 2 downward so that the mainboard body 2 pushes the limit block 48 and the lifting plate 411 to descend. When the lifting plate 411 descends, the telescopic rod 1 412 and the spring 1 413 are stretched. When the bottom surface of the mainboard body 2 contacts the upper surface of the fixing frame 41, the mainboard body 2 is stopped from being pushed. At this time, the limit block 48 is inserted into the limit groove 410.

[0038] Then the user can take the connection cover 45 so that the positioning block 1 46 and the positioning block 2 49 are placed correspondingly, and insert the corresponding hexagonal wrench into the hexagonal groove opened at the upper end of the rotating shaft 420, and then rotate the rotating shaft 420 so that the positioning block 3 419 and the positioning block 1 46 are placed at a 90-degree angle. Then the user can plug the connection cover 45 into the upper end of the hollow column 44, and stop pushing the connection cover 45 when the bottom surface of the hollow column 44 contacts the upper surface of the main board body 2, and rotate the connection cover 45 90 degrees so that the positioning block 1 46 and the positioning block 2 49 are at a 90-degree angle. At this time, the bottom end of the limit plate 2 418 overlaps the bottom surface of the baffle 2 423;

[0039] Then the user can use the Allen wrench to press the rotating shaft 420 downward so that the bottom surface of the positioning block three 419 contacts the upper end of the sleeve 426. At this time, the limit plate 1 415 is lower than the height of the baffle 1 421, and the rotating shaft 420 pushes the limit plate 1 415 to drop to stretch the spring 2 416 and the telescopic rod 2 417. Then the user can rotate the rotating shaft 420 ninety degrees so that the positioning block three 419 and the positioning block 1 46 are placed at a ninety-degree angle. At this time, the limit plate 1 415 is rotated to be directly below the baffle 1 421. Then the user can take the Allen wrench out of the hexagonal groove at the upper end of the rotating shaft 420. At this time, the tension of the spring 2 416 pulls the limit plate 1 415 upward so that the insertion rod 425 is socketed with the socket 422, and the upper surface of the limit plate 1 415 overlaps with the bottom surface of the baffle 1 421. Then repeat the above steps to install the remaining connecting covers 45.

[0040] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] In the present invention, unless otherwise clearly stipulated and limited, for example, it can be a fixed connection, a detachable connection, or an integrated one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A computer motherboard fixing device for a computer, comprising a bottom plate (1), characterized in that: Two screw holes (5) are provided at the four corners of the base plate (1), and the four screw holes (5) are respectively threadedly connected to the middle parts of four hexagon socket bolts (3), and the upper ends of the four hexagon socket bolts (3) are respectively connected to the bottom ends of four fixing mechanisms (4), and the upper ends of the four fixing mechanisms (4) are all connected to the main board body (2).

2. A computer motherboard fixing device for a computer according to claim 1, characterized in that: Each of the fixing mechanisms (4) comprises a fixing frame (41), the bottom surface of the fixing frame (41) overlaps the upper surface of the bottom plate (1), and the bottom surface of the fixing frame (41) is provided with a screw hole (42) threadedly connected to the hexagon socket bolt (3).

3. A computer motherboard fixing device for a computer according to claim 2, characterized in that: The upper surface of the fixing frame (41) overlaps the bottom surface of the mainboard body (2), and a fixing groove (43) is provided on the upper surface of the fixing frame (41). The bottom end of the fixing groove (43) is fixedly connected to the bottom surface of the hollow column (44).

4. A computer motherboard fixing device for a computer according to claim 3, characterized in that: A fixing plate (414) is fixedly provided in the middle of the inner side surface of the hollow column (44); the middle of the bottom surface of the fixing plate (414) is fixedly connected to the upper ends of the telescopic rod (412) and the spring (413); the spring (413) is sleeved on the outer side of the telescopic rod (412); and a positioning block (49) is fixedly provided in the middle of one side surface of the fixing frame (41).

5. A computer motherboard fixing device for a computer according to claim 4, characterized in that: The bottom ends of the telescopic rod (412) and the spring (413) are fixedly connected to the upper surface of the lifting plate (411), and the front and rear ends of the lifting plate (411) are respectively fixedly connected to the opposite ends of two limit blocks (48), and the middle parts of the two limit blocks (48) are respectively sleeved in the two through grooves (47).

6. A computer motherboard fixing device for a computer according to claim 5, characterized in that: The two through grooves (47) are both formed on the wall of the hollow column (44); the opposite ends of the two limit blocks (48) are respectively sleeved with the two limit grooves (410); the two limit grooves (410) are both formed on the upper surface of the fixing frame (41); and the opposite ends of the two limit grooves (410) are both connected to the fixing groove (43).

7. A computer motherboard fixing device for a computer according to claim 6, characterized in that: The hollow column (44) is sleeved in a mounting hole provided on the main board body (2); the upper end of the hollow column (44) is sleeved with the connecting cover (45); the bottom surface of the connecting cover (45) overlaps with the upper surface of the main board body (2); a positioning block (46) is fixedly provided on the outer side surface of the connecting cover (45); the middle portion of the upper surface of the connecting cover (45) is rotatably connected to the upper end of the sleeve (426) via a bearing; and the bottom end of the sleeve (426) is fixedly connected to the middle portion of the turntable (424).

8. A computer motherboard fixing device for a computer according to claim 7, characterized in that: The bottom surface of the rotating disk (424) is fixedly connected to the upper ends of the two telescopic rods (417) and the two springs (416). The bottom ends of the two telescopic rods (417) and the two springs (416) are fixedly connected to the upper surface of the limiting plate (415). The two springs (416) are respectively sleeved on the outside of the two telescopic rods (417). The middle part of the upper surface of the limiting plate (415) is fixedly connected to the bottom end of the rotating shaft (420). The rotating shaft (420) is sleeved in the sleeve (426). A positioning block (419) is fixedly provided at the upper end of the rotating shaft (420). A hexagonal groove is provided on the upper surface of the rotating shaft (420).

9. A computer motherboard fixing device for a computer according to claim 8, characterized in that: The two ends of the upper surface of the limiting plate (415) overlap the bottom surfaces of the two baffle plates (421) respectively, and the two baffle plates (421) are provided with insertion holes (422), and the two insertion holes (422) are respectively plugged with two insertion rods (425), and the bottom ends of the two insertion rods (425) are fixedly connected to the upper surface of the limiting plate (415), and the opposite ends of the two baffle plates (421) are fixedly connected to the inner side surface of the hollow column (44); The inner side surface of the hollow column (44) is also fixedly connected to the opposite ends of the two baffle plates (423); the bottom surfaces of the two baffle plates (423) are respectively overlapped with the bottom ends of the two limit plates (418); the upper ends of the two limit plates (418) are fixedly connected to the upper inner side surface of the connecting cover (45); the angle between the baffle plate (423) and the baffle plate (421) is ninety degrees; the baffle plate (423) is located above the baffle plate (421); the bottom end of the limit plate (418) is located between the baffle plate (423) and the baffle plate (421); the length of the limit plate (415) is less than the length between the opposite ends of the two baffle plates (423).

10. A method for fixing a computer motherboard for a computer, characterized in that: The steps include: S1. When using the present device to install the mainboard body (2) inside the computer host, the user can first connect the hexagon socket bolt (3) with the screw hole 1 (42) and the screw hole 2 (5) to connect and fix the fixing frame (41) with the bottom plate (1), and then use the hexagon socket bolt (3) to fix the bottom plate (1) inside the computer host. At this time, the user can connect the mounting hole on the mainboard body (2) with the hollow column (44), and continue to press the mainboard body (2) downward so that the mainboard body (2) pushes the limit block (48) and the lifting plate (411) to descend. When the lifting plate (411) descends, it stretches the telescopic rod 1 (412) and the spring 1 (413). When the bottom surface of the mainboard body (2) contacts the upper surface of the fixing frame (41), the mainboard body (2) stops being pushed. At this time, the limit block (48) is inserted into the limit groove (410); S2. The user can then take the connection cover (45) so that the positioning block 1 (46) and the positioning block 2 (49) are placed correspondingly, and insert the corresponding hexagonal wrench into the hexagonal groove opened at the upper end of the rotating shaft (420), and then rotate the rotating shaft (420) so that the positioning block 3 (419) and the positioning block 1 (46) are placed at a 90-degree angle. Then the user can plug the connection cover (45) into the upper end of the hollow column (44), and stop pushing the connection cover (45) when the bottom surface of the hollow column (44) contacts the upper surface of the main board body (2), and rotate the connection cover (45) 90 degrees so that the positioning block 1 (46) and the positioning block 2 (49) are at a 90-degree angle. At this time, the bottom end of the limit plate 2 (418) overlaps the bottom surface of the baffle plate 2 (423); S3. Then the user can use the hexagonal wrench to press the rotating shaft (420) downward so that the bottom surface of the positioning block three (419) contacts the upper end of the sleeve (426). At this time, the limit plate one (415) is lower than the height of the baffle plate one (421), and the rotating shaft (420) pushes the limit plate one (415) to move downward to stretch the spring two (416) and the telescopic rod two (417). Then the user can rotate the rotating shaft (420) 90 degrees so that the positioning block three (419) is in contact with the positioning block one (46). Placed at an angle of 90 degrees, the limit plate 1 (415) is rotated to the bottom of the baffle plate 1 (421), and then the user can remove the hexagonal wrench from the hexagonal groove at the upper end of the rotating shaft (420). At this time, the tension of the spring 2 (416) pulls the limit plate 1 (415) upward so that the insertion rod (425) is connected with the socket (422), and the upper surface of the limit plate 1 (415) overlaps with the bottom surface of the baffle plate 1 (421), and then repeat the above steps to install the remaining connecting covers (45).

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