An industrial control computer motherboard fixing structure and an industrial control computer

Abstract

This invention discloses a motherboard mounting structure for an industrial control computer (ICC), belonging to the field of IC technology. The motherboard mounting structure can be installed on an IC, which includes a chassis. The motherboard mounting structure includes a base and a mounting component. The base is installed inside the chassis; the mounting component is installed on the base and includes a pressing part, a limiting part, and a pre-tightening component. The limiting part is foldable and can be unfolded. The mounting holes on the IC motherboard can be inserted through the pressing part and pass through the folded limiting part before being mounted on the base. When the pressing part is pressed down, the limiting part unfolds and presses against the upper surface of the IC motherboard. Simultaneously, the pre-tightening component is connected to the pressing part and, after the pressing part is pressed down, drives the pressing part to apply pre-tightening pressure to the IC motherboard. In this application, during use, only the pressing part needs to be pressed, achieving installation in essentially "seconds," greatly simplifying the operation process and effectively improving installation speed.

Description

Technical Field

[0001] This invention relates to the field of industrial control computer technology, and more specifically to an industrial control computer motherboard fixing structure and an industrial control computer. Background Technology

[0002] Industrial PCs are computers specifically designed for industrial environments. They feature high reliability, anti-interference capabilities, and resistance to harsh environments, and are widely used in fields such as automation control, data acquisition, machine vision, and edge computing.

[0003] The motherboard is one of the core components inside an industrial computer, and it needs to be stably fixed inside the computer. Currently, the motherboard is mainly fixed with screws. This fixing method has the advantages of simple structure and easy assembly, and is therefore widely used. However, it has certain drawbacks, namely:

[0004] When using screws for fixing, the screws need to be turned many times, which is relatively cumbersome and results in a slow installation speed. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an industrial control computer motherboard fixing structure to solve the problems existing in the background art.

[0006] This invention provides the following technical solution: a motherboard mounting structure for an industrial control computer, which can be installed on an industrial control computer, the industrial control computer including a chassis, and the motherboard mounting structure comprising:

[0007] The base is installed inside the chassis;

[0008] A fixing component is mounted on a base. The fixing component includes a pressing part, a limiting part, and a pre-tightening component. The limiting part is foldable and can be unfolded. The mounting holes on the industrial control computer motherboard can be inserted through the pressing part and pass through the folded limiting part to be mounted on the base. When the pressing part is pressed down, the limiting part unfolds and presses against the upper surface of the industrial control computer motherboard. At the same time, the pre-tightening component is connected to the pressing part and drives the pressing part to apply pre-tightening pressure to the industrial control computer motherboard after the pressing part is pressed down.

[0009] Furthermore, the pressing part includes a first sliding sleeve and a second sliding sleeve. The first sliding sleeve is fixedly inserted in the middle of the base, and the second sliding sleeve is slidably inserted in the middle of the first sliding sleeve.

[0010] Furthermore, the limiting part includes a limiting rod and a driving rod. One end of the limiting rod is rotatably connected to the surface of the first sliding sleeve, and the other end is rotatably connected to the end of the driving rod. The end of the driving rod away from the limiting rod is rotatably connected to the surface of the second sliding sleeve. The sliding of the second sliding sleeve will drive the limiting rod to rotate through the driving rod and press it against the industrial control computer motherboard.

[0011] Furthermore, the pre-tightening assembly includes a limiting ring, and the base has a cavity in the middle. The limiting ring is slidably installed in the cavity, and a first compression spring is connected between the limiting ring and the top surface of the cavity.

[0012] Furthermore, the pressing part also includes a limiting wedge, which is slidably inserted into the side of the second sliding sleeve. A control component is provided in the middle of the second sliding sleeve, and the limiting wedge is controlled to slide through the control component. At the same time, the limiting wedge is driven by the control component and slides out of the surface of the first sliding sleeve under normal conditions. The wedge surface of the limiting wedge faces the inner ring surface of the limiting ring. When the first sliding sleeve slides toward the limiting ring, the inner ring surface of the limiting ring can push the limiting wedge into the first sliding sleeve through the wedge surface of the limiting wedge. A third compression spring is connected between the bottom end of the second sliding sleeve and the bottom surface of the cavity. Under the action of the third compression spring, the second sliding sleeve drives the limiting part to be in a folded state. At the same time, the elastic force of the third compression spring is less than that of the first compression spring.

[0013] Furthermore, the control assembly includes a control rod, a fixed retaining ring, a movable retaining ring, and a second compression spring. The control rod is slidably disposed within the second sliding sleeve. The fixed retaining ring is fixedly installed in the middle of the second sliding sleeve, and the movable retaining ring is fixedly installed on the control rod. The second compression spring is installed between the fixed retaining ring and the movable retaining ring, and the movable retaining ring drives the control rod to slide upward under the force of the second compression spring. A connecting rod is rotatably connected to the end of the control rod, and the end of the connecting rod away from the control rod is rotatably connected to the side of the limiting wedge. When the control rod slides upward, it will drive the limiting wedge to slide out of the second sliding sleeve through the connecting rod. When the control rod slides downward, it will drive the limiting wedge to slide into the second sliding sleeve through the connecting rod.

[0014] Furthermore, a lifting assembly is provided inside the cavity, and the lifting assembly can push the limiting ring to slide up above the limiting wedge block. The lifting assembly is configured to operate when the second sliding sleeve slides into the cavity.

[0015] Furthermore, the lifting assembly includes a cover, a piston, an air vent, and a lifting sleeve. The cover is fixedly installed at the bottom of the cavity, and there is a gap between the cover and the inner wall of the cavity. The lifting sleeve is slidably installed in the gap. The piston is slidably installed inside the cover. The bottom end of the second sliding sleeve extends into the cover and is fixedly connected to the piston. The third compression spring is located inside the cover and between the piston and the bottom of the cover. There are several air vents, all of which are opened through the surface of the cover and close to the bottom of the cover. At the same time, the air vents connect the cover and the gap. When the second sliding sleeve slides downward, it will drive the piston to slide to squeeze the air inside the cover out of the air vent into the gap, and push the lifting sleeve to slide upward to push the limiting ring to slide.

[0016] Furthermore, a pressure relief hole is provided through the surface of the base, which is connected to the bottom end of the gap. At the same time, the instantaneous airflow of the pressure relief hole is less than the instantaneous airflow of the air outlet.

[0017] This application also discloses an industrial control computer, including the aforementioned industrial control computer motherboard fixing structure.

[0018] This application allows for installation in seconds simply by pressing the pressing part, greatly simplifying the operation process and significantly improving installation speed. Furthermore, the fixing structure utilizes the force of a first compression spring to secure the motherboard. This structure ensures nearly constant pressure on the motherboard surface, effectively preventing damage caused by over-tightening screws compared to screw fixation, making it safer to use. Since the limiting force on the motherboard is provided by the first compression spring, even in vibrating environments, if there are gaps between the motherboard and the base, the system will maintain pressure on the motherboard, preventing it from loosening and ensuring greater stability. Additionally, the elimination of screws avoids the risk of screws falling into the chassis and causing short circuits, or the problem of insecure fixing due to missing screws. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the motherboard fixing of the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0022] Figure 4 For the present invention Figure 2 Enlarged structural diagram at point B;

[0023] Figure 5 This is a schematic diagram of the internal structure of the second sliding sleeve of the present invention.

[0024] The attached figures are labeled as follows: 100, base; 110, cavity; 120, pressure relief hole; 200, pressing part; 210, first sliding sleeve; 220, second sliding sleeve; 230, limiting wedge; 240, third compression spring; 300, limiting part; 310, limiting rod; 320, drive rod; 400, pre-tightening assembly; 410, limiting ring; 420, first compression spring; 500, control assembly; 510, control rod; 520, fixed retaining ring; 530, movable retaining ring; 540, second compression spring; 550, connecting rod; 600, lifting assembly; 610, cover; 620, piston; 630, vent; 640, lifting sleeve; 650, gap. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative and are not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Reference Figure 1 This invention provides a motherboard mounting structure for an industrial control computer, which can be installed on an industrial control computer. The industrial control computer includes a chassis. The motherboard mounting structure includes a base 100 and a mounting component. The base 100 is installed inside the chassis. The mounting component is installed on the base 100. The mounting component includes a pressing part 200, a limiting part 300, and a pre-tightening component 400. The limiting part 300 is foldable and can be unfolded. The mounting holes on the industrial control computer motherboard can be inserted through the pressing part 200 and pass through the folded limiting part 300 to be mounted on the base 100. When the pressing part 200 is pressed down, the limiting part 300 unfolds and presses against the upper surface of the industrial control computer motherboard. At the same time, the pre-tightening component 400 is connected to the pressing part 200 and drives the pressing part 200 to apply pre-tightening pressure to the industrial control computer motherboard after the pressing part 200 is pressed down.

[0027] The base 100 is cylindrical with a regular hexagonal cross-section for easy wrench tightening. The bottom of the base 100 is fixed with a threaded post, which can be threaded into the motherboard mounting hole inside the industrial control computer chassis. The top of the base 100 is fixed with a flexible buffer pad, which can be made of rubber, to prevent the motherboard from rigidly contacting the base 100 and causing wear, and also to buffer vibration.

[0028] Continue as Figure 1 As shown, the pressing part 200 includes a first sliding sleeve 210 and a second sliding sleeve 220. The first sliding sleeve 210 is fixedly inserted in the middle of the base 100, and the second sliding sleeve 220 is slidably inserted in the middle of the first sliding sleeve 210. The outer cross-sectional shape of the second sliding sleeve 220 is the same as the inner cross-sectional shape of the first sliding sleeve 210, thus ensuring that the second sliding sleeve 220 can slide stably in the middle of the first sliding sleeve 210, and its sliding direction is along the axial direction of the first sliding sleeve 210.

[0029] Continue as Figure 1 As shown, the limiting part 300 includes a limiting rod 310 and a driving rod 320. One end of the limiting rod 310 is rotatably connected to the surface of the first sliding sleeve 210, and the other end is rotatably connected to the end of the driving rod 320. The end of the driving rod 320 away from the limiting rod 310 is rotatably connected to the surface of the second sliding sleeve 220. The sliding of the second sliding sleeve 220 will drive the limiting rod 310 to rotate through the driving rod 320 and press it against the industrial control computer motherboard.

[0030] When the connection point of the limiting rod 310 on the first sliding sleeve 210 is farthest from the connection point of the driving rod 320 on the second sliding sleeve 220, the limiting rod 310 and the driving rod 320 tend to be collinear, and the limiting part 300 is in a folded state to minimize the space occupied by the limiting part 300 (in the plane direction on the industrial control computer motherboard), making it convenient for the motherboard to be fitted. When the connection point of the limiting rod 310 on the first sliding sleeve 210 is closest to the connection point of the driving rod 320 on the second sliding sleeve 220, the limiting part 300 is in an unfolded state, occupies the largest space, and exceeds the diameter range of the mounting holes on the industrial control computer motherboard, thereby limiting the motherboard.

[0031] like Figure 2 and Figure 3 As shown, the pretensioning assembly 400 includes a limiting ring 410, and a cavity 110 is provided in the middle of the base 100. The limiting ring 410 is slidably installed in the cavity 110, and a first compression spring 420 is connected between the limiting ring 410 and the top surface of the cavity 110.

[0032] The two ends of the first compression spring 420 are fixedly connected to the top surface inside the cavity 110 and the limiting ring 410 by welding, respectively. The first compression spring 420 needs to have a large elastic force so that the entire fixing mechanism can ensure the stability of the main board when pressing the main board.

[0033] like Figure 2 , Figure 3 and Figure 5 As shown, the pressing part 200 also includes a limiting wedge 230, which is slidably inserted into the side of the second sliding sleeve 220. The second sliding sleeve 220 is provided with a control component 500 in the middle, and the limiting wedge 230 is controlled to slide by the control component 500. At the same time, the limiting wedge 230 is driven by the control component 500 and slides out of the surface of the first sliding sleeve 210 under normal conditions. The wedge surface of the limiting wedge 230 faces the inner ring surface of the limiting ring 410. When the first sliding sleeve 210 slides toward the limiting ring 410, the inner ring surface of the limiting ring 410 can push the limiting wedge 230 into the first sliding sleeve 210 through the wedge surface of the limiting wedge 230. A third compression spring 240 is connected between the bottom end of the second sliding sleeve 220 and the bottom surface of the cavity 110. Under the action of the third compression spring 240, the second sliding sleeve 220 drives the limiting part 300 to be in a folded state. At the same time, the elastic force of the third compression spring 240 is less than that of the first compression spring 420.

[0034] Continue as Figure 2 , Figure 3 and Figure 5As shown, the control assembly 500 includes a control lever 510, a fixed retaining ring 520, a movable retaining ring 530, and a second compression spring 540. The control lever 510 is slidably disposed within the second sliding sleeve 220. The fixed retaining ring 520 is fixedly installed in the middle of the second sliding sleeve 220. The movable retaining ring 530 is fixedly installed on the control lever 510. The second compression spring 540 is installed between the fixed retaining ring 520 and the movable retaining ring 530, and the movable retaining ring 530 drives the control lever 510 upward under the force of the second compression spring 540. Figure 1 The control lever 510 slides upwards, and the end of the control lever 510 is rotatably connected to the connecting rod 550. The end of the connecting rod 550 away from the control lever 510 is rotatably connected to the side of the limiting wedge block 230. When the control lever 510 slides upwards, it will drive the limiting wedge block 230 to slide out of the second sliding sleeve 220 through the connecting rod 550. When the control lever 510 slides downwards, it will drive the limiting wedge block 230 to slide into the second sliding sleeve 220 through the connecting rod 550.

[0035] The second sliding sleeve 220 is a hollow structure. The size of the control rod 510 corresponds to the inner ring size of the second sliding sleeve 220, and the control rod 510 can slide tightly in the middle of the second sliding sleeve 220. Its sliding direction is along the axis of the second sliding sleeve 220.

[0036] Thus, in use, simply install the base 100 on the mounting holes of the motherboard of the industrial control computer chassis, then align the mounting holes on the motherboard with the pressing part 200 and the limiting part 300 and insert it. Then press down the second sliding sleeve 220, which will slide down. During this process, the second sliding sleeve 220 will drive the drive rod 320 to rotate, which in turn will drive the limiting rod 310 to rotate until the limiting rod 310 presses firmly against the motherboard surface. Simultaneously, as the second sliding sleeve 220 slides down, it will drive the limiting wedge 230 to slide down synchronously. When the limiting wedge 230 contacts the upper surface of the limiting ring 410, the limiting ring 410 is subjected to... Due to the tension of the first compression spring 420, its downward movement is relatively small. Therefore, when the limiting wedge 230 contacts the upper surface of the limiting ring 410, it will be subjected to the reaction force of the inner ring surface of the limiting ring 410 and slide into the second sliding sleeve 220. After the limiting wedge 230 has completely slid below the limiting ring 410, it will slide out again under the action of the second compression spring 540. At this time, the limiting ring 410 will limit the limiting wedge 230 under the action of the first compression spring 420 to prevent the second sliding sleeve 220 from resetting, so as to ensure that the drive rod 320 and the limiting rod 310 remain stationary. In this way, the fixing of the main board is completed.

[0037] When the motherboard needs to be disassembled, simply insert a hard, thin object such as a steel needle into the middle of the second sliding sleeve 220 to push the fixed retaining ring 520 to move. The fixed retaining ring 520 will drive the control rod 510 to slide down. The sliding down of the control rod 510 will drive the limiting wedge block 230 to slide into the second sliding sleeve 220 through the connecting rod 550. At this time, the limiting ring 410 can no longer limit the second sliding sleeve 220. The second sliding sleeve 220 will be reset under the action of the third compression spring 240, so that the limiting part 300 folds down, thereby losing the limitation on the motherboard. At this time, the motherboard can be removed directly.

[0038] In summary, when using the fixing structure proposed in this application to fix the motherboard, only the pressing part 200 needs to be pressed, which can basically achieve "second-level" installation, greatly simplifying the operation process and effectively improving the installation speed.

[0039] Meanwhile, when fixing the motherboard, the fixing force is mainly achieved by the elastic force of the first compression spring 420. This structure can ensure that the pressure on the motherboard surface is almost constant. Compared with screw fixing, it can effectively avoid the situation where the motherboard surface is damaged due to over-tightening of screws, making it safer to use.

[0040] Furthermore, since the limiting force on the motherboard is provided by the first compression spring 420, the entire industrial control computer can always keep the motherboard pressed tightly if there is an installation gap between the motherboard and the base 100 when it is used in some vibration environment, thus preventing the motherboard from loosening and making the use more stable.

[0041] In addition, since screws are not required for installation, it avoids the risk of screws falling into the chassis and causing short circuits, or the problem of loose fixing caused by missing screws.

[0042] In the above scheme, since the first compression spring 420 is not subjected to preload, it can only use its own elastic force to prevent the limiting ring 410 from blocking the limiting wedge 230. Under this structure, the sliding amounts of the limiting ring 410, the limiting wedge 230, and the second sliding sleeve 220 need to be closely matched to ensure that when the limiting rod 310 is pressed against the surface of the main board, the limiting wedge 230 just passes through the limiting ring 410 to achieve stable limiting. The manufacturing technology is relatively difficult. Therefore, further optimization is carried out as follows:

[0043] like Figure 2 , Figure 3 and Figure 4 As shown, a lifting component 600 is added inside the cavity 110, and the lifting component 600 can push the limiting ring 410 to slide up above the limiting wedge block 230. The lifting component 600 is configured to operate when the second sliding sleeve 220 slides into the cavity 110.

[0044] Continue as Figure 2 , Figure 3 and Figure 4 The lifting assembly 600 shown includes a cover 610, a piston 620, an air outlet 630, and a lifting sleeve 640. The cover 610 is fixedly installed at the bottom of the cavity 110, and there is a gap 650 between the cover 610 and the inner wall of the cavity 110. The lifting sleeve 640 is slidably installed in the gap 650 in a sealed manner. The piston 620 is slidably installed in the cover 610. The bottom end of the second sliding sleeve 220 extends into the cover 610 and is fixedly connected to the piston 620. A third compression spring 24... The piston 620 is located inside the cover 610 and between the piston 620 and the bottom of the cover 610. There are several air outlets 630, all of which are opened through the surface of the cover 610 and close to the bottom of the cover 610. At the same time, the air outlets 630 connect the cover 610 and the gap 650. When the second sliding sleeve 220 slides downward, it will drive the piston 620 to slide, so as to squeeze the air in the cover 610 out of the air outlets 630 into the gap 650, and push the lifting sleeve 640 to slide upward, thereby pushing the limiting ring 410 to slide.

[0045] A pressure relief hole 120 is provided through the surface of the base 100, which is connected to the bottom end of the gap 650. At the same time, the instantaneous airflow of the pressure relief hole 120 is less than the instantaneous airflow of the air outlet 630.

[0046] Thus, when the second sliding sleeve 220 slides down, it will drive the piston 620 down. The piston 620 will squeeze the air in the cover 610 out of the air outlet 630. At this time, since the air volume of the air outlet 630 is greater than the air volume of the pressure relief hole 120, the air pressure in the gap 650 will increase, thereby pushing the lifting sleeve 640 to slide up, which will push the limiting ring 410 to slide up and squeeze the first compression spring 420. At this time, the limiting wedge 230 will also contact the limiting ring 410 in advance, thus sliding to the bottom of the limiting ring 410 earlier. The first compression spring 420 will have preload due to compression. This force will further push the second sliding sleeve 220 down, thereby ensuring that the limiting rod 310 can make tight contact with the motherboard surface. In addition, during the whole process, since the limiting ring 410 can slide up and the first compression spring 420 will be compressed, the difficulty of matching the limiting wedge 230 and the limiting ring 410 can be reduced, thus facilitating manufacturing.

[0047] Finally, it should be noted that the directions mentioned in this application, such as up, down, left, and right, are... Figure 1 The directions: up, down, left, and right.

[0048] This application also discloses a control machine, including the above-mentioned industrial control computer motherboard fixing structure, which combines all the advantages of the above-mentioned motherboard fixing structure.

[0049] Finally, it should be noted that the accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A motherboard mounting structure for an industrial control computer, which can be mounted on an industrial control computer, the industrial control computer including a chassis, characterized in that, The industrial control computer motherboard fixing structure includes: The base (100) is installed inside the chassis; A fixing component is mounted on a base (100). The fixing component includes a pressing part (200), a limiting part (300), and a pre-tightening component (400). The limiting part (300) is foldable and can be folded and unfolded. The mounting hole on the industrial control computer motherboard can be inserted through the pressing part (200) and passed through the folded limiting part (300) to be mounted on the base (100). When the pressing part (200) is pressed down, the limiting part (300) unfolds and presses the upper surface of the industrial control computer motherboard. At the same time, the pre-tightening component (400) is connected to the pressing part (200) and drives the pressing part (200) to apply pre-tightening pressure to the industrial control computer motherboard after the pressing part (200) is pressed down. The pressing part (200) includes a first sliding sleeve (210) and a second sliding sleeve (220). The first sliding sleeve (210) is fixedly inserted in the middle of the base (100), and the second sliding sleeve (220) is slidably inserted in the middle of the first sliding sleeve (210). The pretensioning assembly (400) includes a limiting ring (410), and a cavity (110) is provided in the middle of the base (100). The limiting ring (410) is slidably installed in the cavity (110), and a first compression spring (420) is connected between the limiting ring (410) and the top surface of the cavity (110). The pressing part (200) also includes a limiting wedge (230), which is slidably inserted into the side of the second sliding sleeve (220). The second sliding sleeve (220) has a control component (500) in the middle, and the limiting wedge (230) is controlled to slide by the control component (500). At the same time, the limiting wedge (230) is driven by the control component (500) and slides out of the surface of the first sliding sleeve (210) under normal conditions. The wedge surface of the limiting wedge (230) faces the inner ring surface of the limiting ring (410), and the first sliding sleeve (210) faces the limiting ring. When the ring (410) slides, the inner ring surface of the limiting ring (410) can push the limiting wedge (230) into the first sliding sleeve (210) through the wedge surface of the limiting wedge (230). A third compression spring (240) is connected between the bottom end of the second sliding sleeve (220) and the bottom surface of the cavity (110). Under the action of the third compression spring (240), the second sliding sleeve (220) drives the limiting part (300) to be in a folded state. At the same time, the elastic force of the third compression spring (240) is less than that of the first compression spring (420). The cavity (110) is provided with a lifting assembly (600), and the lifting assembly (600) can push the limiting ring (410) to slide up to above the limiting wedge (230). The lifting assembly (600) is configured to operate when the second sliding sleeve (220) slides into the cavity (110). The lifting assembly (600) includes a cover (610), a piston (620), an air outlet (630), and a lifting sleeve (640). The cover (610) is fixedly installed at the bottom of the cavity (110), and there is a gap (650) between the cover (610) and the inner wall of the cavity (110). The lifting sleeve (640) is slidably installed in the gap (650) in a sealed manner. The piston (620) is slidably installed in the cover (610). The bottom end of the second sliding sleeve (220) extends into the cover (610) and is fixedly connected to the piston (620). The third compression spring (220) is... 40) It is located inside the cover (610) and between the piston (620) and the bottom of the cover (610). There are several air outlets (630), all of which are opened through the surface of the cover (610) and close to the bottom of the cover (610). At the same time, the air outlets (630) connect the cover (610) and the gap (650). When the second sliding sleeve (220) slides down, it will drive the piston (620) to slide so that the air in the cover (610) is squeezed out from the air outlets (630) into the gap (650), and push the lifting sleeve (640) to slide up to push the limiting ring (410) to slide.

2. The industrial control computer motherboard fixing structure according to claim 1, characterized in that: The limiting part (300) includes a limiting rod (310) and a driving rod (320). One end of the limiting rod (310) is rotatably connected to the surface of the first sliding sleeve (210), and the other end is rotatably connected to the end of the driving rod (320). The end of the driving rod (320) away from the limiting rod (310) is rotatably connected to the surface of the second sliding sleeve (220). The sliding of the second sliding sleeve (220) will drive the limiting rod (310) to rotate and press it against the motherboard of the industrial control computer through the driving rod (320).

3. The industrial control computer motherboard fixing structure according to claim 2, characterized in that: The control assembly (500) includes a control lever (510), a fixed retaining ring (520), a movable retaining ring (530), and a second compression spring (540). The control lever (510) is slidably disposed within a second sliding sleeve (220). The fixed retaining ring (520) is fixedly installed in the middle of the second sliding sleeve (220). The movable retaining ring (530) is fixedly installed on the control lever (510). The second compression spring (540) is installed between the fixed retaining ring (520) and the movable retaining ring (530), and the movable retaining ring (530) is positioned within the second compression spring. The spring (540) drives the control rod (510) to slide upward. The end of the control rod (510) is rotatably connected to the connecting rod (550). The end of the connecting rod (550) away from the control rod (510) is rotatably connected to the side of the limiting wedge (230). When the control rod (510) slides upward, it will drive the limiting wedge (230) to slide out of the second sliding sleeve (220) through the connecting rod (550). When the control rod (510) slides downward, it will drive the limiting wedge (230) to slide into the second sliding sleeve (220) through the connecting rod (550).

4. The industrial control computer motherboard fixing structure according to claim 3, characterized in that: The base (100) has a pressure relief hole (120) through it, which is connected to the bottom end of the gap (650). At the same time, the instantaneous airflow of the pressure relief hole (120) is less than the instantaneous airflow of the air outlet (630).

5. An industrial control computer, characterized in that, The present invention includes a motherboard fixing structure for an industrial control computer as described in any one of claims 1-4.

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