Dustproof and fall-resistant computer case and use method thereof

Abstract

The application provides a dustproof and anti-falling computer case, which comprises an inner case body, characterized in that a self-vertically arranged shutter is fixed to the rear end of the inner case body, a cover plate is rotatably connected to the front end of the inner case body through a hinge, an inner frame is fixed to the rear end of the cover plate, a dustproof assembly is arranged in the middle of the inner frame, an outer case body is arranged outside the inner case body, a shock-absorbing block is fixed to each of the four corners inside the outer case body, and a buffer assembly is arranged in each of the shock-absorbing blocks. The application integrates the functions of negative pressure ventilation and filtration, automatic dust shaking of filter plates, sealing dust prevention during shutdown, multi-stage shock absorption and anti-falling, damping speed limiting and resetting into the same case structure, and does not need to additionally install independent dustproof and shock-absorbing accessories. The linkage of parts synchronously completes the actions of heat dissipation, dust removal, sealing and buffering, the overall structure is simple and compact, and the multiple use requirements of heat dissipation, dust prevention and impact resistance are met, so that the application is suitable for various use scenarios such as desktop computers and industrial control cases.

Description

Technical Field

[0001] This invention relates to the field of shockproof technology for electrical equipment enclosures, and more particularly to a dustproof and shockproof computer chassis and its usage method. Background Technology

[0002] As the fundamental carrier of core electronic components such as the motherboard, graphics card, and power supply, the cleanliness of the computer case and its impact resistance directly determine the overall stability and lifespan of the computer. Existing conventional computer cases suffer from two major drawbacks in practical use: poor dust protection and insufficient shock absorption. Specific problems are as follows: First, traditional chassis ventilation and dustproof structures offer limited protection, failing to simultaneously address the needs for ventilation and heat dissipation while the system is shut down. To ensure heat dissipation for internal components, chassis sidewalls or panels typically feature fixed ventilation holes and single-layer filters. When the equipment is powered on, external airflow passes directly through the filter into the chassis for heat exchange. However, the filter only effectively intercepts large dust particles; fine dust easily penetrates and accumulates on the circuit boards and heat sink fins. Long-term dust accumulation can lead to decreased heat dissipation efficiency and short circuits. Furthermore, existing filters lack self-cleaning mechanisms, requiring manual disassembly and cleaning after dust clogs the filter holes, resulting in cumbersome maintenance. After the equipment is powered off and shut down, the ventilation holes lack automatic sealing mechanisms, allowing dust, hair, and debris to continuously enter the chassis through the ventilation gaps, exacerbating the dust accumulation problem during periods of quiescent storage. Some chassis with one-way louvers only allow for one-way airflow through the exhaust vents, leaving the intake always open, failing to address the dust prevention issue during shutdown and significantly limiting their usability.

[0003] Secondly, existing chassis lack tiered cushioning and shock-proof structures, making them prone to damage to internal hardware during handling, accidental bumps, and tipping. Desktop computers and portable industrial control chassis are highly susceptible to collisions, tipping, and falls during transport and relocation. Ordinary chassis rely solely on the rigidity of the shell to resist impacts, lacking tiered cushioning and stress-dissipating structures, allowing impact forces to be directly transmitted to internal components. Even with the addition of simple shock-absorbing pads, these only provide single-point cushioning; the impact forces from multi-directional impacts and tipping cannot be dissipated progressively, resulting in short shock-absorbing travel and limited cushioning effectiveness. When the chassis tip over, the internal support frame and guide rail components experience a sudden and violent rebound, causing significant vibrations to delicate hardware such as graphics cards and hard drives, easily leading to hard drive bad sectors, loose interfaces, and board deformation, greatly increasing the probability of equipment damage.

[0004] Third, the existing shock absorption and reset mechanism lacks a damping and speed limiting structure, resulting in significant impact from the rebound. When the chassis is impacted or tipped over by external force, the shock absorption springs rebound quickly to reset. Without a deceleration and limiting structure during the reset process, the instantaneous rebound of the shock absorption plate and guide rail assembly causes the inner chassis to shake violently, exacerbating vibration damage to internal electronic components. This makes it impossible to smoothly reset the shock absorption structure, significantly reducing the vibration protection effect.

[0005] In summary, existing computer chassis cannot simultaneously achieve efficient ventilation and automatic filter cleaning during operation, sealed and dustproof air intake channels during shutdown, and comprehensive functions such as multi-directional impact, graded buffering and smooth reset during tipping. The market urgently needs a computer chassis that can combine efficient self-cleaning and dustproofing with multi-level damping and shockproofing. Summary of the Invention

[0006] The purpose of this invention is to solve the problems existing in the above-mentioned background art, and to propose a dustproof and shockproof computer case and its usage method.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A dustproof and shockproof computer chassis includes an inner chassis, characterized in that a self-closing louver is fixed to the rear end of the inner chassis, a cover plate is rotatably connected to the front end of the inner chassis via a hinge, an inner frame is fixed to the rear end of the cover plate, a dustproof component is provided in the middle of the inner frame, an outer chassis is provided on the outside of the inner chassis, and shock-absorbing blocks are fixed at the four corners inside the outer chassis, with buffer components provided inside each shock-absorbing block.

[0008] Preferably, the dustproof assembly consists of an outer filter plate, a negative pressure fan, a top plate, an inner frame, an inner filter plate, a touch plate, a support member, a strike bar, a pressure spring, a sealing plate, a protrusion, a connecting column, a return spring, and a collection box. Specifically, an outer filter plate is fixed to the front end of the inner frame, a negative pressure fan is fixed to the rear end of the inner frame, a top plate is fixed to the front end of the drive shaft of the power output end of the negative pressure fan, an inner frame is embedded in the middle of the inner frame, an inner filter plate is fixed inside the inner frame, a touch plate is fixed to the middle of the rear end of the inner filter plate, a support member is fixed to the inner wall of the inner frame, a strike rod is fixed to the rear end of the support member, a pressure spring is nested at the front end of the outer side of the strike rod, a sealing plate is embedded in the front end of the inner frame, a protrusion is fixed to the front end of the sealing plate, a connecting column is fixed to the rear end of the outer wall of the sealing plate, a return spring is nested at the rear end of the outer side of the connecting column, and a collection box is embedded in the lower part of the inner frame.

[0009] Preferably, the front end of the sealing plate is in close contact with the outer filter plate, the vertical cross-sectional area of ​​the outer filter plate is larger than the vertical cross-sectional area of ​​the sealing plate, the number of protrusions in the outer filter plate is the same as the number of filter holes in the outer filter plate, the protrusions are completely embedded in the filter holes, and the hollow volume of the filter holes is the same as the volume of the protrusions.

[0010] Preferably, the connecting post fixed to the rear end of the outer wall of the sealing plate is embedded inside the support member, and the sealing plate pushes the connecting post to slide back and forth horizontally in the support member, and the return spring is tightly attached between the front end of the support member and the rear end of the sealing plate.

[0011] Preferably, the collection box is located below the inner frame and the outer filter plate, the outer wall of the inner frame is in close contact with the inner frame, the impact rod is embedded in the inner frame, the inner frame is nested on the outer rear end of the impact rod, the inner frame drives the inner filter plate to slide back and forth along the horizontal direction of the impact rod, the front end of the top plate and the rear end of the touch plate are both provided with a half inclined surface, and the inclined surfaces of the front end of the top plate and the rear end of the touch plate are in close contact.

[0012] Preferably, the buffer assembly consists of an inner frame plate, a first guide rail, a first damping plate, a second guide rail, a second damping plate, a third guide rail, a mounting plate, a damping spring, a damping frame, a spring, and a snap-fit ​​plate. Specifically, an inner frame plate is embedded inside the shock absorber block. First guide rails are longitudinally fixed at both ends of the inner frame plate. A first shock absorber plate is nested in the middle of the outer side of each first guide rail. A second guide rail is fixedly connected between two first shock absorbers. A second shock absorber plate is nested in the middle of the outer side of the second guide rail. A third guide rail is embedded inside the second shock absorber plate. A mounting plate is fixed to one end of the third guide rail near the outer wall of the inner casing. Shock absorber springs are nested on the outer sides of the first, second, and third guide rails. Damping frames are fixed to the upper and lower ends of the first and second shock absorbers, and springs are fixed inside the damping frames. A snap-fit ​​plate is fixedly connected to one end of each spring.

[0013] Preferably, the shock absorber is arranged in the shape of the letter L, and a buffer assembly is provided at the bottom and top of the inside of the shock absorber. One end of the mounting plate in the buffer assembly is fixed to the inner box, so that the inner box is suspended between the four shock absorbers.

[0014] Preferably, the damping spring is disposed between the mounting plate and the second damping plate, between the second damping plate and the first damping plate, and between the first damping plate and the inner frame plate. The first damping plate slides back and forth along the first guide rail, the second damping plate slides along the second guide rail, and the third guide rail slides inside the second damping plate.

[0015] Preferably, damping frames are provided at the upper and lower ends of the first and second guide rails and at the left and right ends of the third guide rail. The snap-fit ​​plate slides horizontally in the damping frames. A snap-fit ​​tooth is provided at the end of the snap-fit ​​plate away from the middle of the damping frames. The snap-fit ​​tooth on the snap-fit ​​plate engages with the snap-fit ​​grooves provided on the outer walls of the first, second, and third guide rails.

[0016] Preferably, the following steps are also included: S1: During computer operation, the negative pressure fan starts working simultaneously. The airflow is drawn by the negative pressure adsorption. At this time, the sealing plate moves to the right under the negative pressure, pushing the return spring to compress. This causes the protrusion on the left side of the sealing plate to disengage from the filter holes of the outer filter plate, thus releasing the filter hole blockage. The outside air first flows through the outer filter plate to complete the initial filtration. The filtered airflow enters the inner chamber and then undergoes secondary fine filtration through the inner filter plate. The clean airflow continuously blows through various components in the inner chamber, eventually blowing the self-closing louvers to open. The airflow is then discharged from the inside of the equipment through the self-closing louvers, completing the entire ventilation and filtration cycle. S2: During the operation of the negative pressure fan, its drive shaft drives the top plate to rotate continuously. When the top plate rotates, it periodically touches the contact plate, causing the contact plate to be pressed and push the inner frame and inner filter plate to slide forward along the impact rod, and squeeze the pressure spring to compress and store energy. When the top plate rotates and disengages from the contact plate, the contact limit is released, the pressure spring quickly resets, and pushes the inner frame and inner filter plate to move back along the impact rod until the inner frame abuts against the rear end of the impact rod to form a limit impact. Relying on this reciprocating impact vibration, the dust and impurities trapped on the surface of the inner filter plate can be dislodged, avoiding long-term adhesion of dirt and blockage of the filter holes, and ensuring the stable ventilation and filtration performance of the inner filter plate. S3: When the negative pressure fan stops running, the self-closing louvers automatically reset and close, sealing the air outlet on the right side of the inner chamber. At the same time, the return spring releases its elastic force and resets, pushing the sealing plate to the left. This causes the protrusion on the left side of the sealing plate to fully embed into the filter holes of the outer filter plate. This not only pushes out the impurities and dirt stuck in the filter holes, achieving self-cleaning of the filter holes, but also forms a tight seal on the filter holes of the outer filter plate. This effectively prevents external dust and debris from entering the inner chamber when the equipment is stationary, ensuring a clean environment inside the inner chamber. S4: When the chassis is impacted or overturned, the inner chassis moves with the mounting plate and the third guide rail, compressing or stretching the damping spring between the mounting plate and the second damping plate to achieve primary buffering; the mounting plate and the third guide rail simultaneously drive the second damping plate to move, causing the damping spring between the second damping plate and the first damping plate to deform, completing secondary buffering; the mounting plate, the third guide rail, the second damping plate and the second guide rail work together to drive the first damping plate to slide, compressing and stretching the damping spring between the first damping plate and the inner frame plate to form tertiary buffering. When the chassis tilts, the outer chassis contacts the ground first, and the multi-layer springs gradually unload the force, resulting in excellent overall anti-fall and buffering performance; S5: During the process of the shock-absorbing spring pushing the first shock-absorbing plate, the second shock-absorbing plate and the mounting plate to reset, the snap-fit ​​plate moves along the inside of the damping frame. At this time, the spring inside the damping frame continuously pushes the snap-fit ​​plate, so that the snap-fit ​​plate's snap-fit ​​teeth alternately engage with the slots of the first guide rail, the second guide rail and the third guide rail, thereby buffering the reset speed of the first shock-absorbing plate, the second shock-absorbing plate and the third guide rail, and preventing the instantaneous rebound of the components from causing large-scale shaking of the inner box.

[0017] This invention provides a dustproof and shockproof computer chassis and its usage method, which has the following beneficial effects: 1. During equipment operation, the negative pressure fan creates negative pressure, automatically opening the sealing plate and dislodging the protrusion from the filter holes. Outside air is pre-filtered by the outer filter plate and then finely filtered by the inner filter plate before being blown onto the internal components of the casing. The clean airflow is finally pushed open by the self-closing louvers and discharged, ensuring smooth heat dissipation and good dust interception. During the operation of the negative pressure fan, the top plate periodically moves the touch plate, causing the inner filter plate to reciprocate and vibrate, automatically shaking off the accumulated dust on the plate surface, preventing filter hole blockage, and eliminating the need for frequent manual cleaning of the filter screen. After the equipment stops, the self-closing louvers close and block the air outlet. The return spring drives the sealing plate to move to the left, the protrusion embeds into the filter hole, pushes out the stuck debris, and closes the air intake channel, preventing external dust and debris from entering the inner casing during static periods. This maintains the cleanliness of the casing for a long time, reduces hardware dust accumulation, overheating, and short circuit failures, and extends the service life of components.

[0018] 2. When the chassis is impacted or tipped over in any direction, the impact force is dissipated in stages through the damping springs between the mounting plate and the second damping plate, the second damping plate and the first damping plate, and the first damping plate and the inner frame plate, forming a three-stage buffer system that can absorb impact loads transmitted from all directions. Furthermore, during the tipping process, the outer chassis makes contact with the ground first, isolating the hard impact of the ground from directly acting on the internal frame, greatly reducing the vibration transmitted to the precision components such as circuit boards and hard drives inside the chassis, effectively preventing damage such as hardware loosening, deformation, and hard drive bad sectors, and improving the reliability of use in transportation and accidental bump scenarios.

[0019] 3. When the external force disappears, the shock-absorbing spring drives each shock-absorbing plate and mounting plate to reset. The snap-fit ​​plate slides in the damping frame. The spring continuously snaps the snap-fit ​​plate teeth into multiple sets of guide rail slots, continuously damping and decelerating the reset movement. This prevents the shock-absorbing components from rebounding instantaneously and causing the inner housing to shake violently. It further reduces the secondary vibration damage to the internal electronic components during the reset phase, and provides stable buffer protection throughout the process. Attached Figure Description

[0020] Figure 1 This is a front view of the overall structure of the present invention; Figure 2 This is a schematic diagram of a partial structure of the shock absorber block in this invention; Figure 3 This is a schematic diagram of a partial front cross-section of the shock absorber block in this invention; Figure 4 This is a partial structural diagram of the inner frame plate in this invention; Figure 5 This is an exploded view of a portion of the inner frame plate structure in this invention; Figure 6 This is a schematic diagram of a partial front cross-section of the first damping plate in this invention; Figure 7 This is a schematic cross-sectional view of the right side of a partial structure of the inner box in this invention; Figure 8This is a partial exploded view of the inner frame and sealing plate structure in this invention; Figure 9 This is a schematic diagram of a partial structure of the top plate and the contact plate in this invention.

[0021] Legend: Inner casing 1, self-closing louvers 101, cover plate 2, inner frame 3, outer filter plate 301, negative pressure fan 302, top plate 303, inner frame 304, inner filter plate 305, touch plate 306, support member 307, impact rod 308, pressure spring 309, sealing plate 310, protrusion 311, connecting column 312, return spring 313, collection box 314, outer casing 4, shock absorber block 5, inner frame plate 6, first guide rail 7, first shock absorber plate 701, second guide rail 8, second shock absorber plate 801, third guide rail 9, mounting plate 10, shock absorber spring 11, damping frame 12, spring 13, snap-fit ​​plate 14. Detailed Implementation

[0022] Example 1, referring to Figure 1-9 A dustproof and shockproof computer case includes an inner case 1. A self-closing louver 101 is fixed to the rear end of the inner case 1. A cover plate 2 is rotatably connected to the front end of the inner case 1 via a hinge. An inner frame 3 is fixed to the rear end of the cover plate 2. A dustproof component is provided in the middle of the inner frame 3. An outer case 4 is provided on the outside of the inner case 1. Shock-absorbing blocks 5 are fixed at the four corners inside the outer case 4. A buffer component is provided inside each shock-absorbing block 5.

[0023] The dustproof assembly consists of an outer filter plate 301, a negative pressure fan 302, a top plate 303, an inner frame 304, an inner filter plate 305, a contact plate 306, a support 307, a strike bar 308, a pressure spring 309, a sealing plate 310, a protrusion 311, a connecting column 312, a return spring 313, and a collection box 314. An outer filter plate 301 is fixed at the front end of the inner frame 3, a negative pressure fan 302 is fixed at the rear end of the inner frame 3, a top plate 303 is fixed at the front end of the drive shaft of the power output end of the negative pressure fan 302, an inner frame 304 is embedded in the middle of the inner frame 3, an inner filter plate 305 is fixed inside the inner frame 304, a touch plate 306 is fixed at the middle of the rear end of the inner filter plate 305, a support member 307 is fixed on the inner wall of the inner frame 3, a strike bar 308 is fixed at the rear end of the support member 307, a pressure spring 309 is nested at the front end of the outer side of the strike bar 308, a sealing plate 310 is embedded in the front end of the inner frame 3, a protrusion 311 is fixed at the front end of the sealing plate 310, a connecting column 312 is fixed at the rear end of the outer wall of the sealing plate 310, a return spring 313 is nested at the rear end of the outer side of the connecting column 312, and a collection box 314 is embedded in the lower part of the inner frame 3.

[0024] The front end of the sealing plate 310 is in close contact with the outer filter plate 301. The vertical cross-sectional area of ​​the outer filter plate 301 is larger than that of the sealing plate 310. The number of protrusions 311 in the outer filter plate 301 is the same as the number of filter holes in the outer filter plate 301. The protrusions 311 are completely embedded in the filter holes. The hollow volume of the filter holes is the same as the volume of the protrusions 311. When the protrusion 311 on the left side of the sealing plate 310 is fully embedded in the filter hole of the outer filter plate 301, it can push out the impurities and dirt stuck in the filter hole of the outer filter plate 301, realize the self-cleaning of the filter hole, and form a sealed blockage of the filter hole of the outer filter plate 301, effectively preventing external dust and debris from entering the inner box 1 when the equipment is stationary, and ensuring a clean environment inside the inner box 1. The connecting post 312, which is fixed to the rear end of the outer wall of the sealing plate 310, is embedded in the inside of the support member 307. The sealing plate 310 pushes the connecting post 312 to slide back and forth horizontally in the support member 307. The return spring 313 is tightly attached between the front end of the support member 307 and the rear end of the sealing plate 310. When the sealing plate 310 is attracted by negative pressure, it moves backward, pushing the connecting column 312 to compress the return spring 313 between it and the support member 307. This causes the protrusion 311 on the left side of the sealing plate 310 to disengage from the filter hole of the outer filter plate 301, thus releasing the filter hole blockage. When the negative pressure fan 302 stops working, the return spring 313 pushes the sealing plate 310 back to its original position and pushes the sealing plate 310 to move to the left, so that the protrusion 311 on the left side of the sealing plate 310 is completely embedded in the filter hole of the outer filter plate 301, forming a tight seal on the filter hole of the outer filter plate 301. The collection box 314 is located below the inner frame 304 and the outer filter plate 301. The outer wall of the inner frame 304 is close to the inner frame 301. The impact rod 308 is embedded in the inner frame 304. The inner frame 304 is nested in the outer rear end of the impact rod 308. The inner frame 304 drives the inner filter plate 305 to slide back and forth along the horizontal direction of the impact rod 308. The front end of the top plate 303 and the rear end of the touch plate 306 are both provided with a half-inclined surface. The inclined surfaces of the front end of the top plate 303 and the rear end of the touch plate 306 are closely attached to each other. When the debris and dust filtered out by the inner filter plate 305 in the inner frame 304 fall due to gravity or vibration of the inner frame 304, they will fall into the collection box 314 located in the lower middle part of the inner frame 304 and be stored thereafter. The dust in the collection box 314 can be cleaned by simply pulling it down.

[0025] Example 2 differs from Example 1 in that, in this example, the buffer assembly consists of an inner frame plate 6, a first guide rail 7, a first damping plate 701, a second guide rail 8, a second damping plate 801, a third guide rail 9, a mounting plate 10, a damping spring 11, a damping frame 12, a spring 13, and a snap-fit ​​plate 14. An inner frame plate 6 is embedded inside the shock absorber 5. Both ends of the inner frame plate 6 are longitudinally fixed with a first guide rail 7. A first shock absorber plate 701 is nested in the middle of the outer side of the first guide rail 7. A second guide rail 8 is fixedly connected between the two first shock absorbers 701. A second shock absorber plate 801 is nested in the middle of the outer side of the second guide rail 8. A third guide rail 9 is embedded inside the second shock absorber plate 801. An mounting plate 10 is fixed at one end of the third guide rail 9 near the outer wall of the inner box 1. A shock absorber spring 11 is nested on the outer side of the first guide rail 7, the second guide rail 8, and the third guide rail 9. A damping frame 12 is fixed at the upper and lower ends of the first shock absorber plate 701 and inside the second shock absorber plate 801. A spring 13 is fixed inside the damping frame 12. A snap-fit ​​plate 14 is fixedly connected to one end of the spring 13. The shock absorber 5 is arranged in the shape of the letter L. Buffer components are provided at the bottom and top of the interior of the shock absorber 5. One end of the mounting plate 10 in the buffer component is fixed to the inner box 1, so that the inner box 1 is suspended between the four shock absorbers 5. The inner frame plate 6 of the four shock-absorbing blocks 5 provides all-round protection for the inner box 1, preventing the inner box 1 from moving in any direction when it is impacted, and has good anti-drop performance. The damping spring 11 is disposed between the mounting plate 10 and the second damping plate 801, between the second damping plate 801 and the first damping plate 701, and between the first damping plate 701 and the inner frame plate 6. The first damping plate 701 slides back and forth along the first guide rail 7, the second damping plate 801 slides along the second guide rail 8, and the third guide rail 9 slides along the inside of the second damping plate 801. Damping frames 12 are provided at the upper and lower ends of the first guide rail 7 and the second guide rail 8, and at the left and right ends of the third guide rail 9. The snap-fit ​​plate 14 slides horizontally in the damping frame 12. The snap-fit ​​plate 14 is provided with snap teeth at one end away from the middle of the damping frame 12. The snap teeth on the snap-fit ​​plate 14 engage with the snap grooves provided on the outer walls of the first guide rail 7, the second guide rail 8 and the third guide rail 9. During the process of the shock-absorbing spring 11 pushing the first shock-absorbing plate 701, the second shock-absorbing plate 801 and the mounting plate 10 to reset, the snap-fit ​​plate 14 moves along the inside of the damping frame 12. At this time, the spring 13 inside the damping frame 12 continuously pushes the snap-fit ​​plate 14, so that the snap-fit ​​teeth on one side of the snap-fit ​​plate 14 alternately engage with the slots of the first guide rail 7, the second guide rail 8 and the third guide rail 9, thereby buffering the reset speed of the first shock-absorbing plate 701, the second shock-absorbing plate 801 and the third guide rail 9, preventing the instantaneous rebound of the components from causing the inner housing 1 to be triggered, and improving the stability of the inner housing 1.

[0026] Example 3 differs from Example 2 in that it further includes the following steps: S1: During computer operation, the negative pressure fan 302 starts working simultaneously. It draws airflow through negative pressure adsorption. At this time, the sealing plate 310 moves to the right under the negative pressure, pushing the return spring 313 to compress. This causes the protrusion 311 on the left side of the sealing plate 310 to disengage from the filter holes of the outer filter plate 301, thus releasing the filter hole blockage. The outside air first flows through the outer filter plate 301 to complete the initial filtration. The filtered airflow enters the inner chamber 1 and then passes through the inner filter plate 305 for secondary fine filtration. The clean airflow continues to blow on various components of the inner chamber 1, and finally blows open the self-closing louver 101. The airflow is discharged from the inside of the equipment through the self-closing louver 101, completing the entire ventilation and filtration cycle. S2: During the operation of the negative pressure fan 302, its drive shaft drives the top plate 303 to rotate continuously. When the top plate 303 rotates, it periodically touches the contact plate 306, causing the contact plate 306 to be pressed and push the inner frame 304 and the inner filter plate 305 to slide forward along the impact rod 308, and squeeze the pressure spring 309 to compress and store energy. When the top plate 303 rotates and disengages from the contact plate 306, the contact limit is released, the pressure spring 309 quickly resets, and pushes the inner frame 304 and the inner filter plate 305 to move back along the impact rod 308 until the inner frame 304 abuts against the rear end of the impact rod 308 to form a limiting impact. Relying on this reciprocating impact vibration, the dust and impurities trapped on the surface of the inner filter plate 305 can be dislodged, avoiding long-term adhesion of dirt and blockage of the filter holes, and ensuring the stable ventilation and filtration performance of the inner filter plate 305. S3: When the negative pressure fan 302 stops running, the self-closing louver 101 automatically resets and closes, sealing the air outlet on the right side of the inner box 1. At the same time, the return spring 313 releases its elastic force and resets, pushing the sealing plate 310 to move to the left, so that the protrusion 311 on the left side of the sealing plate 310 is completely embedded in the filter hole of the outer filter plate 301. This can both push out the impurities and dirt stuck in the filter hole, realize the self-cleaning of the filter hole, and form a tight seal on the filter hole of the outer filter plate 301, effectively preventing external dust and debris from entering the interior of the inner box 1 when the equipment is stationary, and ensuring a clean environment inside the inner box 1. S4: When the chassis is impacted or overturned, the inner chassis 1 moves with the mounting plate 10 and the third guide rail 9, compressing or stretching the damping spring 11 between the mounting plate 10 and the second damping plate 801 to achieve primary buffering; the mounting plate 10 and the third guide rail 9 simultaneously drive the second damping plate 801 to move, causing the damping spring 11 between the second damping plate 801 and the first damping plate 701 to deform, completing secondary buffering; the mounting plate 10, the third guide rail 9, the second damping plate 801 and the second guide rail 8 work together to drive the first damping plate 701 to slide, compressing and stretching the damping spring 11 between the first damping plate 701 and the inner frame plate 6 to form tertiary buffering. When the chassis tilts, the outer chassis 4 contacts the ground first, and the multi-layer springs gradually unload the force, resulting in excellent overall anti-fall buffering performance; S5: During the process of the shock-absorbing spring 11 pushing the first shock-absorbing plate 701, the second shock-absorbing plate 801 and the mounting plate 10 to reset, the snap-fit ​​plate 14 moves along the inside of the damping frame 12. At this time, the spring 13 inside the damping frame 12 continuously pushes the snap-fit ​​plate 14, so that the snap-fit ​​teeth on one side of the snap-fit ​​plate 14 alternately snap into the slots of the first guide rail 7, the second guide rail 8 and the third guide rail 9, thereby buffering the reset speed of the first shock-absorbing plate 701, the second shock-absorbing plate 801 and the third guide rail 9, and preventing the instantaneous rebound of the components from causing a large shaking of the inner box 1.

[0027] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these should also be considered within the scope of protection of the present invention. These will not affect the effectiveness of the implementation of the present invention or the practicality of the patent.

Claims

1. A dustproof and shockproof computer chassis, comprising an inner casing (1), characterized in that, The inner box (1) has a self-closing louver (101) fixed at its rear end. The front end of the inner box (1) is connected to a cover plate (2) by a hinge. The rear end of the cover plate (2) is fixed to an inner frame (3). A dustproof component is provided in the middle of the inner frame (3). An outer box (4) is provided on the outside of the inner box (1). Shock-absorbing blocks (5) are fixed at the four corners inside the outer box (4). A buffer component is provided inside each shock-absorbing block (5).

2. The dustproof and shockproof computer chassis according to claim 1, characterized in that, The dustproof assembly consists of an outer filter plate (301), a negative pressure fan (302), a top plate (303), an inner frame (304), an inner filter plate (305), a touch plate (306), a support member (307), a strike bar (308), a pressure spring (309), a sealing plate (310), a protrusion (311), a connecting column (312), a return spring (313), and a collection box (314). An outer filter plate (301) is fixed at the front end of the inner frame (3), a negative pressure fan (302) is fixed at the rear end of the inner frame (3), a top plate (303) is fixed at the front end of the drive shaft of the power output end of the negative pressure fan (302), an inner frame (304) is embedded in the middle of the inner frame (3), an inner filter plate (305) is fixed inside the inner frame (304), a touch plate (306) is fixed at the middle of the rear end of the inner filter plate (305), and a support member (307) is fixed on the inner wall of the inner frame (3). The rear end of the support member (307) is fixed with a strike bar (308), and the outer front end of the strike bar (308) is nested with a pressure spring (309). The inner front end of the inner frame (3) is embedded with a sealing plate (310), the front end of the sealing plate (310) is fixed with a protrusion (311), the rear end of the outer wall of the sealing plate (310) is fixed with a connecting column (312), the outer rear end of the connecting column (312) is nested with a return spring (313), and the lower interior of the inner frame (3) is embedded with a collection box (314).

3. The dustproof and shockproof computer chassis according to claim 2, characterized in that, The front end of the sealing plate (310) is in close contact with the outer filter plate (301). The vertical cross-sectional area of ​​the outer filter plate (301) is larger than that of the sealing plate (310). The number of protrusions (311) in the outer filter plate (301) is the same as the number of filter holes in the outer filter plate (301). The protrusions (311) are completely embedded in the filter holes. The hollow volume of the filter holes is the same as the volume of the protrusions (311).

4. The dustproof and shockproof computer chassis according to claim 2, characterized in that, The connecting column (312) fixed at the rear end of the outer wall of the sealing plate (310) is embedded in the interior of the support (307). The sealing plate (310) pushes the connecting column (312) to slide back and forth horizontally in the support (307). The return spring (313) is close to the front end of the support (307) and the rear end of the sealing plate (310).

5. The dustproof and shockproof computer chassis according to claim 2, characterized in that, The collection box (314) is located below the inner frame (304) and the outer filter plate (301). The outer wall of the inner frame (304) is close to the inner frame (3). The impact rod (308) is embedded in the inner frame (304). The inner frame (304) is nested on the outer rear end of the impact rod (308). The inner frame (304) drives the inner filter plate (305) to slide back and forth along the horizontal direction of the impact rod (308). The front end of the top plate (303) and the rear end of the touch plate (306) are both provided with a half-inclined surface. The inclined surfaces of the front end of the top plate (303) and the rear end of the touch plate (306) are closely attached to each other.

6. The dustproof and shockproof computer chassis according to claim 1, characterized in that, The buffer assembly consists of an inner frame plate (6), a first guide rail (7), a first damping plate (701), a second guide rail (8), a second damping plate (801), a third guide rail (9), a mounting plate (10), a damping spring (11), a damping frame (12), a spring (13), and a snap-fit ​​plate (14); The shock absorber (5) has an inner frame plate (6) embedded inside. Both ends of the inner frame plate (6) are longitudinally fixed with a first guide rail (7). The outer middle of the first guide rail (7) is nested with a first shock absorber plate (701). A second guide rail (8) is fixedly connected between the two first shock absorbers (701). The outer middle of the second guide rail (8) is nested with a second shock absorber plate (801). A third guide rail (9) is embedded inside the second shock absorber plate (801). A mounting plate (10) is fixed at one end of the third guide rail (9) near the outer wall of the inner box (1). Shock absorber springs (11) are nested on the outer sides of the first guide rail (7), the second guide rail (8), and the third guide rail (9). A damping frame (12) is fixed at the upper and lower ends of the first shock absorber plate (701) and inside the second shock absorber plate (801). A spring (13) is fixed inside the damping frame (12). A snap-fit ​​plate (14) is fixedly connected to one end of the spring (13).

7. The dustproof and shockproof computer chassis according to claim 6, characterized in that, The shock absorber (5) is arranged in the shape of the letter L. Buffer components are provided at the bottom and top of the interior of the shock absorber (5). One end of the mounting plate (10) in the buffer component is fixed to the inner box (1) so that the inner box (1) is suspended between the four shock absorbers (5).

8. The dustproof and shockproof computer chassis according to claim 7, characterized in that, The damping spring (11) is disposed between the mounting plate (10) and the second damping plate (801), between the second damping plate (801) and the first damping plate (701), and between the first damping plate (701) and the inner frame plate (6). The first damping plate (701) slides back and forth along the first guide rail (7), the second damping plate (801) slides along the second guide rail (8), and the third guide rail (9) slides inside the second damping plate (801).

9. The dustproof and shockproof computer chassis according to claim 7, characterized in that, The first guide rail (7) and the second guide rail (8) are provided with damping frames (12) at their upper and lower ends, and the third guide rail (9) is provided with its left and right ends. The snap-fit ​​plate (14) slides horizontally in the damping frame (12). The snap-fit ​​plate (14) is provided with snap teeth at one end away from the middle of the damping frame (12). The snap teeth on the snap-fit ​​plate (14) engage with the snap grooves provided on the outer walls of the first guide rail (7), the second guide rail (8) and the third guide rail (9).

10. The dustproof and shockproof computer chassis according to claims 1-9, characterized in that, Specifically Includes the following steps: S1: During computer operation, the negative pressure fan (302) starts working simultaneously. It draws airflow through negative pressure adsorption. At this time, the sealing plate (310) moves to the right under the negative pressure and pushes the return spring (313) to compress, so that the protrusion (311) on the left side of the sealing plate (310) is separated from the filter hole of the outer filter plate (301), and the filter hole is unblocked. The outside air first flows through the outer filter plate (301) to complete the initial filtration. The filtered airflow enters the interior of the inner box (1) and then passes through the inner filter plate (305) to achieve secondary fine filtration. The clean airflow continues to blow on various parts of the inner box (1) and finally blows the self-closing louver (101) to open. The airflow is discharged from the inside of the equipment through the self-closing louver (101) to complete the entire ventilation and filtration cycle. S2: During the operation of the negative pressure fan (302), its drive shaft drives the top plate (303) to rotate continuously. When the top plate (303) rotates, it periodically touches the contact plate (306), causing the contact plate (306) to be pressed and push the inner frame (304) and the inner filter plate (305) to slide forward along the impact rod (308), and squeeze the pressure spring (309) to compress and store energy. When the top plate (303) rotates away from the contact plate (306), the contact limit is released, the pressure spring (309) quickly resets, and pushes the inner frame (304) and the inner filter plate (305) to move back in the opposite direction along the impact rod (308) until the inner frame (304) abuts against the rear end of the impact rod (308) to form a limit impact. Relying on this reciprocating impact vibration, the dust and impurities trapped on the surface of the inner filter plate (305) can be dislodged, avoiding the long-term adhesion of dirt and clogging of the filter holes, and ensuring the stable ventilation and filtration performance of the inner filter plate (305). S3: When the negative pressure fan (302) stops running, the self-closing louver (101) automatically resets and closes, forming a seal on the right side of the air outlet of the inner box (1). At the same time, the return spring (313) releases its elastic force and resets, pushing the sealing plate (310) to move to the left, so that the protrusion (311) on the left side of the sealing plate (310) is completely embedded in the filter hole of the outer filter plate (301). This can push out the impurities and dirt stuck in the filter hole, realize the self-cleaning of the filter hole, and form a sealed blockage of the filter hole of the outer filter plate (301), effectively preventing external dust and debris from entering the inner box (1) when the equipment is stationary, and ensuring a clean environment inside the inner box (1). S4: When the chassis is impacted or overturned, the inner chassis (1) moves with the mounting plate (10) and the third guide rail (9), compressing or stretching the damping spring (11) between the mounting plate (10) and the second damping plate (801) to achieve primary buffering; the mounting plate (10) and the third guide rail (9) simultaneously drive the second damping plate (801) to move, causing the damping spring (11) between the second damping plate (801) and the first damping plate (701) to deform, thus completing secondary buffering; The mounting plate (10), the third guide rail (9), the second damping plate (801) and the second guide rail (8) work together to drive the first damping plate (701) to slide, and squeeze and stretch the damping spring (11) between the first damping plate (701) and the inner frame plate (6) to form a three-level buffer. When the chassis tilts, the outer box (4) contacts the ground first, and the multi-layer springs gradually unload the force, resulting in excellent overall anti-fall buffer performance. S5: During the process of the shock-absorbing spring (11) pushing the first shock-absorbing plate (701), the second shock-absorbing plate (801) and the mounting plate (10) to reset, the snap-fit ​​plate (14) moves along the inside of the damping frame (12). At this time, the spring (13) inside the damping frame (12) continuously pushes the snap-fit ​​plate (14), so that the snap-fit ​​plate (14) on one side alternately snaps into the slots of the first guide rail (7), the second guide rail (8) and the third guide rail (9), thereby buffering the reset speed of the first shock-absorbing plate (701), the second shock-absorbing plate (801) and the third guide rail (9), and preventing the instantaneous rebound of the components from causing large-scale shaking of the inner box (1).

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