Computer case capable of achieving automatic protection

Abstract

The invention discloses a computer case capable of achieving automatic protection, and relates to the field of computer cases, the computer case comprises a case body, a first fan box is installed at the top of the case body, a cover plate used for covering the first fan box is rotatably connected to the top of the case body, and at least one first fan is arranged in the first fan box; the cover plate can be opened when the first draught fan is started and closed when the first draught fan stops rotating, an air inlet assembly blowing air into the box body is installed at the bottom end of the box body, and a dust filtering assembly is arranged at an air inlet. Opening and closing of the cover plate at the top of the case body and dust removal of the dust filtering assembly at the bottom of the case body are automatically completed through power generated when the fan assembly is started and stopped, and automatic protection of the computer case is achieved on the premise that the efficient gas circulation efficiency in the case is maintained.

Description

Technical Field

[0001] The invention relates to the field of computer cases, in particular to a computer case capable of automatic protection. Background Art

[0002] As a part of computer accessories, the main function of the chassis is to place and fix various computer accessories, play a supporting and protective role, and can also make the computer system more stable and reduce short circuits.

[0003] A Chinese patent with related announcement number CN116578172A discloses a protective computer case, including a support, a case, a limit plate and a reset spring. The case is fixedly connected to the limit plate, and the case is slidably limited on the support by the limit plate. A reset spring is connected between the limit plate and the support. It also includes a ventilation mechanism and a cleaning roller, and the cleaning roller is used to clean the circulating ventilation screen plate.

[0004] With respect to the above-mentioned related technologies, the ventilation screen plate on the top of the existing computer case is in the shape of a conveyor belt and has a double-layer structure in the vertical direction. The ventilation holes on the double-layer ventilation screen plate are difficult to align with each other in the vertical direction during the circulation of the ventilation screen plate, which easily blocks the airflow passing through the ventilation screen plate, affecting the gas circulation efficiency of the case. Moreover, when the computer is not working, external dust can easily fall directly into the case through the through holes on the ventilation screen plate. In summary, it is difficult for the existing computer case to achieve automatic protection while maintaining good heat dissipation capabilities. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a computer case capable of automatic protection, so as to solve the technical problem that the existing computer case is difficult to achieve automatic protection while maintaining good heat dissipation capability.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a computer case capable of automatic protection, comprising a case body, a first fan box being installed on the top of the case body, and a cover plate being rotatably connected thereto for covering the first fan box, at least one first fan being arranged in the first fan box, the cover plate being capable of being flipped open when the first fan is started, and being closed when the first fan stops, an air inlet assembly for blowing air into the case body being installed at the bottom end of the case body, and a dust filter assembly being arranged at the air inlet.

[0007] By adopting the above technical solution, the power of the fan assembly when starting and stopping is used to automatically open and close the top cover of the box and remove dust from the dust filter assembly at the bottom of the box, thereby achieving automatic protection of the computer case while maintaining efficient gas circulation efficiency in the case.

[0008] The present invention is further configured such that the first fan is connected to an annular driving disk through a transmission assembly, a driven column is coaxially arranged at the center of the driving disk, the driving disk and the driven column are both rotatably connected in the first fan box, the outer wall of the driven column is connected with snap-in plates at annular intervals, the inner side of the driving disk is radially slidably connected with a plug column capable of cooperating with the snap-in plates, a spring is arranged between the end of the plug column away from the driven column and the inner wall of the driving disk, and during the process of gradually increasing the rotation speed of the driving disk, the plug column will slide into the driving disk away from the snap-in plate until it is completely out of contact with the snap-in plate, and vice versa, the driven column drives the cover plate to be flipped open through the transmission assembly, and a spring plate is fixedly connected to the top of the box body, and the cover plate is blocked by the spring plate after being flipped open and exceeding the vertical state.

[0009] By adopting the above technical solution, when the rotation speed of the driving disk gradually increases and the plug post fails to overcome the spring force and retract into the driving disk, the driving disk can be transmitted to the driven post through the cooperation between the plug post and the clamping piece.

[0010] The present invention is further configured such that the bottom end of the box body is vertically spaced apart with a top plate and a bottom plate parallel to each other, the top plate and the bottom plate are both trapezoidal structures, at least one second fan box is arranged between the planes of the top plate and the bottom plate, ventilation holes are arranged at intervals on the inclined surfaces of the bottom plate, and a blocking net that passes through the ventilation holes and is in a taut state is fixedly connected between the top plate and the inner wall of the box body, the blocking net being used to block dust.

[0011] By adopting the above technical solution, the inclined surfaces of the top plate and the bottom plate which are parallel to each other form a downwardly inclined air inlet.

[0012] The present invention is further configured as follows: the top frame of the barrier net is fixedly connected with a transmission rod extending toward the second fan box, the second fan box is provided with a second fan inside, and is rotatably connected with a driven disk on both sides, a transmission assembly is provided between the driven disk and the second fan, the rotating shaft of the driven disk is radially fixedly connected with a fixed cylinder, a telescopic column is slidably connected inside the fixed cylinder, a spring is provided between the end of the telescopic column and the inner wall of the fixed cylinder, a hammer is fixedly connected to the end of the telescopic column, a protrusion is provided at the end of the transmission rod, the telescopic column will extend as the rotation speed of the driven disk increases, and the hammer can hit the protrusion during the start and stop of the second fan.

[0013] By adopting the above technical solution, during the start and stop process of the second fan, the spring tension connected to the end of the telescopic column prevents the telescopic column from being fully extended from the fixed tube, and the hammer will hit the protrusion during the rotation. The vibration caused by the impact will shake off the dust attached to the taut barrier net.

[0014] The present invention is further configured such that the top end of the box body is rotatably connected to a cover plate shaft, the cover plate shaft is fixedly connected to the edge of the cover plate, a driven gear plate is fixedly connected to the cover plate shaft, an active gear plate meshing with the driven gear plate is rotatably connected in the first fan box, the rotating shaft of the active gear plate is connected to the rotating shaft of a second bevel gear rotatably arranged in the first fan box through a transmission belt, the second bevel gear is meshed with a first bevel gear, the first bevel gear is rotatably connected in the first fan box, and a transmission belt is connected between the rotating shaft of the first bevel gear and the driven column.

[0015] By adopting the above technical solution, the driven column rotates the cover plate shaft of the cover plate through the transmission assembly.

[0016] The present invention is further configured such that the first fan box is obliquely arranged on the top surface of the box body, and the angle between the cover plate and the surface of the first fan box after being flipped open is greater than ninety degrees.

[0017] By adopting the above technical solution, when the cover plate is covered on the first fan box, the cover plate is also in an inclined state, which is beneficial to reduce the adhesion of dust.

[0018] The present invention is further configured such that the width of the ventilation opening is greater than the thickness of the barrier net.

[0019] By adopting the above technical solution, the incoming air can have a larger contact surface with the barrier net after passing through the ventilation hole, which can effectively improve the gas flow efficiency of the incoming air.

[0020] The present invention is further configured such that both sides of the box body are fixedly connected with side panels, and the bottom ends of the side panels are flush with the bottom ends of the inclined surfaces of the top panels.

[0021] By adopting the above technical solution, the side panels play a role in protecting the internal components of the box and closing the two sides of the box.

[0022] The present invention is further configured such that when the first fan completes startup, the cover plate touches the spring sheet and does not compress the spring sheet; during the stoppage of the first fan, the spring sheet will be compressed, and the elastic potential energy released by the spring sheet after compression can cause the cover plate to rotate toward the first fan box to a vertical state passing over the cover plate.

[0023] By adopting the above technical solution, the cover can be prevented from bouncing back due to the elastic force of the spring sheet during the process of opening the cover.

[0024] In summary, the present invention mainly has the following beneficial effects: The present invention arranges air intake and exhaust fan components at the bottom and top of the box body respectively, and utilizes the power of the fan components when starting and stopping to automatically complete the opening and closing of the top cover of the box body and the dust removal of the dust filter component at the bottom of the box body, thereby realizing automatic protection of the computer case under the premise of maintaining high gas flow efficiency in the case. The present invention arranges a plug column which is controlled to be retracted and extended by centrifugal force in the driving disk. When the first fan above the box body is started, the rotation speed of the driving disk is not high, and the plug column is not retracted into the driving disk. At this time, the driving disk can transmit to the driven column to open the cover. After the rotation speed of the first fan increases and stabilizes, the plug column retracts into the driving disk and is out of contact with the driven column. The cover is in an open state due to its own gravity, and the cover is automatically opened when the computer is turned on. The present invention arranges a plug column which is controlled to extend and retract by centrifugal force in the driving disk. When the first fan above the box body stops rotating, the rotation speed gradually decreases. The plug column extends out of the driving disk and cooperates with the driven column to make the cover plate continue to rotate and compress the spring sheet. After the driving disk stops transmitting power to the driven column, the cover plate is turned over by the elastic force of the spring sheet and rotates toward the box body beyond the vertical equilibrium position, so that the cover plate is automatically closed when the computer is shut down. The present invention arranges a plurality of second fans blowing air upward at the bottom of the box body, and arranges multiple layers of blocking nets at intervals on both sides of the second fans, so as to effectively block the dust that is about to enter the box body, and prevent the dust from entering the box body along the airflow used for heat dissipation; The present invention uses a hammer that is controlled to extend and retract by centrifugal force to drive the second fan, and can knock on the transmission rod connected to the barrier net during the start and stop of the second fan, thereby shaking off the dust on the barrier net, thereby allowing the barrier net to continuously maintain a good ventilation rate and at the same time maintain the dust blocking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A perspective view of the present invention; Figure 2 This is a three-dimensional diagram of the internal structure of the box body of the present invention when the cover is opened; Figure 3 It is a three-dimensional diagram of the internal structure of the first fan box of the present invention; Figure 4 For the present invention Figure 3 A magnified view of middle; Figure 5 This is a front view of the box body of the present invention with the cover plate opened; Figure 6 For the present invention Figure 5 Enlarged view of middle B; Figure 7 A three-dimensional diagram of the internal structure of the drive disk of the present invention; Figure 8 A three-dimensional diagram of the dust filter assembly of the present invention; Fig. 9 A three-dimensional diagram of the dust filter assembly of the present invention with the top plate removed; Fig.10 For the present invention Fig. 9 Enlarged view of C in the middle.

[0026] In the figure: 1, box body; 101, side panel; 2, cover plate; 3, first fan box; 4, first fan; 5, driving plate; 501, plug column; 6, driven column; 601, snap-in piece; 7, first bevel gear; 8, second bevel gear; 9, driving gear plate; 10, driven gear plate; 11, cover plate shaft; 12, spring piece; 13, top plate; 14, bottom plate; 1401, vent; 15, second fan box; 16, second fan; 17, blocking net; 1701, transmission rod; 1702, protrusion; 18, driven plate; 19, fixing cylinder; 20, telescopic column; 21, hammer. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0028] The following describes an embodiment of the present invention based on its overall structure. Example

[0029] A computer case capable of automatic protection, such as Figure 1-10 As shown, it includes a box body 1, a first fan box 3 is installed on the top of the box body 1, and a cover plate 2 for covering the first fan box 3 is rotatably connected, at least one first fan 4 is arranged in the first fan box 3, specifically, in this embodiment, two first fans 4 are arranged in the first fan box 3, the cover plate 2 can be opened when the first fan 4 is started, and closed when the first fan 4 stops, an air inlet assembly for blowing air into the box body 1 is installed at the bottom end of the box body 1, and a dust filter assembly is arranged at the air inlet, specifically, the air inlet assembly includes a second fan 16, and the dust filter assembly includes a blocking net 17, and side panels 101 are fixedly connected on both sides of the box body 1, and the bottom end of the side panel 101 is flush with the bottom end of the inclined surface of the top panel 13, and the side panel 101 plays a role in protecting the internal components of the box body 1 and closing both sides of the box body 1.

[0030] See also Figure 3-7The first fan 4 is connected to an annular driving disc 5 through a transmission assembly, and a driven column 6 is coaxially arranged at the center of the driving disc 5. The driving disc 5 and the driven column 6 are both rotatably connected to the first fan box 3. The outer wall of the driven column 6 is connected with a card plate 601 at intervals along the annular direction. The driving disc 5 is radially slidably connected with a plug column 501 that can cooperate with the card plate 601. The plug column 501 can be inserted between the card plates 601, so that the driving disc 5 can transmit to the driven column 6, and the plug column 501 is away from the driven column A spring is arranged between one end of 6 and the inner wall of the driving disk 5, and the spring is used to push the plug post 501 toward the driven post 6. In the process of gradually increasing the rotation speed of the driving disk 5, the plug post 501 will slide into the driving disk 5 away from the card plate 601 until it is completely out of contact with the card plate 601. Conversely, in the same way, specifically, in the process of gradually decreasing the rotation speed of the driving disk 5, the plug post 501 will gradually extend from the driving disk 5 and be inserted between the card plates 601, thereby restoring the driving ability of the driving disk 5 to the driven post 6.

[0031] See also Figure 3-7 The driven column 6 drives the cover plate 2 to open through the transmission assembly. The top of the box body 1 is fixedly connected with a spring piece 12. After the cover plate 2 is opened and exceeds the vertical state, it is blocked by the spring piece 12. Specifically, when the cover plate 2 is in the vertical state, it will not be turned to the sides due to its own gravity. Once it rotates to one side beyond the vertical state, it will have a tendency to turn over due to its own gravity. The first fan 4 is driven to the driving disk 5 through the transmission belt, so that the driving disk 5 rotates in the same direction when the first fan 4 is working. During the process of gradually increasing speed, when the plug post 501 fails to overcome the spring force and is retracted into the driving disk 5, the driving disk 5 can be transmitted to the driven post 6 through the cooperation between the plug post 501 and the clamping piece 601. After the speed of the driving disk 5 is gradually increased and the first fan 4 is started, the plug post 501 slides into the driving disk 5 and is out of contact with the clamping piece 601. The driving disk 5 can no longer drive the driven post 6 to rotate. At this time, the cover plate 2 has been opened and is in a tilted stable state due to its own gravity and the limitation of the spring piece 12.

[0032] See also Figure 2 , Figure 8-10, the bottom end of the box body 1 is vertically spaced apart with a top plate 13 and a bottom plate 14 which are parallel to each other, and both the top plate 13 and the bottom plate 14 are trapezoidal structures, and at least one second fan box 15 is arranged between the planes of the top plate 13 and the bottom plate 14. Specifically, in the present embodiment, there are three second fan boxes 15 in total, and the inclined surfaces of the bottom plate 14 are spaced apart with vents 1401, and a blocking net 17 which passes through the vents 1401 and is in a taut state is fixedly connected between the top plate 13 and the inner wall of the box body 1, and the blocking net 17 is used to block dust and has elastic force, and the inclined surfaces of the top plate 13 and the bottom plate 14 which are parallel to each other form a downwardly inclined air inlet, which can effectively prevent the accumulation of dust when the computer is not in working state, and the air passing through the vents 1401 needs to pass through multiple layers of blocking nets 17 in sequence before it can enter between the bottom plate 14 and the inner wall of the box body 1, and the multiple layers of blocking nets 17 are arranged at intervals, which is not easy to affect the air intake efficiency of the box body 1.

[0033] See also Figure 2-6 The top of the box body 1 is rotatably connected with a cover shaft 11, and the cover shaft 11 is fixedly connected with the edge of the cover plate 2. A driven gear plate 10 is fixedly connected to the cover shaft 11. A driving gear plate 9 meshing with the driven gear plate 10 is rotatably connected in the first fan box 3. The driving gear plate 9 stably transmits power to the driven gear plate 10. The rotating shaft of the driving gear plate 9 is connected to the rotating shaft of the second bevel gear 8 rotatably arranged in the first fan box 3 through a transmission belt. The second bevel gear 8 is meshed with the first bevel gear 7, and the first bevel gear 7 is rotatably connected in the first fan box 3. A transmission belt is connected between the rotating shaft of the first bevel gear 7 and the driven column 6. The driven column 6 rotates the cover shaft 11 of the cover plate 2 through a transmission assembly. In the process of opening the cover plate 2, the speed of the first fan 4 gradually increases to blow air upward, and the airflow blown out by the first fan 4 can also assist the cover plate 2 to be opened to a certain extent.

[0034] See also Figure 2 , Figure 5-6 When the first fan 4 is started up, the cover plate 2 touches the spring piece 12 and is not compressed, so as to prevent the spring piece 12 from rebounding after being compressed, thereby ensuring that the cover plate 2 can be smoothly flipped open. During the shutdown of the first fan 4, the spring piece 12 will be compressed, and the elastic potential energy released by the spring piece 12 after compression can make the cover plate 2 rotate toward the first fan box 3 to a vertical state beyond the cover plate 2. The cover plate 2 beyond the vertical state is flipped back to its original position due to its own gravity. Example

[0035] A computer case capable of automatic protection, such as Figure 1-10As shown, on the basis of the first embodiment, the difference from the first embodiment is that the top frame of the barrier net 17 is fixedly connected with a transmission rod 1701 extending toward the second fan box 15, the second fan box 15 is provided with a second fan 16 inside, and driven discs 18 are rotatably connected on both sides, a transmission assembly is provided between the driven disc 18 and the second fan 16, the rotating shaft of the driven disc 18 is fixedly connected with a fixed cylinder 19 in the radial direction, and a telescopic column 20 is slidably connected in the fixed cylinder 19, and the end of the telescopic column 20 is connected to the fixed cylinder 1 9 is provided with a spring, and a hammer 21 is fixedly connected to the end of the telescopic column 20. Specifically, the telescopic column 20 is a square columnar rubber column, which can only be telescoped and cannot be rotated relative to the fixed cylinder 19. When the hammer 21 hits the protrusion 1702, the telescopic column 20 can be deformed to unload the force, thereby preventing the driven disk 18 from stopping after the hammer 21 hits the protrusion. The hammer 21 can hit the protruding part of the transmission rod 1701 when the rotation speed of the driven disk 18 is not high, so that the transmission rod 1701 vibrates and thus realizes the dust removal of the blocking net 17.

[0036] See also Figure 8-10 The end of the transmission rod 1701 is provided with a protrusion 1702. The telescopic column 20 will extend as the speed of the driven disk 18 increases. The hammer 21 can hit the protrusion 1702 during the start and stop process of the second fan 16. During the start and stop process of the second fan 16, the spring tension connected to the end of the telescopic column 20 prevents the telescopic column 20 from completely extending from the fixed cylinder 19. The hammer 21 will hit the protrusion 1702 during the rotation process. The vibration caused by the collision will shake off the dust attached to the taut barrier net 17, causing the dust on the barrier net 17 to be It is not easy to accumulate dust, maintain the efficient gas circulation efficiency of the barrier net 17, and keep the cleanliness of the barrier net 17. After the speed of the second fan 16 gradually increases to the normal working speed, the speed of the driven disk 18 also increases accordingly, and the centrifugal force exerted on the telescopic column 20 in the fixed cylinder 19 increases to overcome the elastic force of the spring, further stretching the spring, so that the hammer 21 is separated from the rotation radius that will collide with the protrusion 1702, avoiding the hammer 21 from affecting the normal work of the second fan 16, and removing dust from the barrier net 17 during the start and stop of the second fan 16. Example

[0037] A computer case capable of automatic protection, such as Figure 1-10As shown, on the basis of Example 2, the difference from Example 2 is that the first fan box 3 is tilted on the top surface of the box body 1, and the angle between the cover plate 2 and the surface of the first fan box 3 after being flipped over is greater than ninety degrees. When the cover plate 2 is covered on the first fan box 3, the cover plate 2 is also tilted at the same time, which is beneficial to reduce the adhesion of dust and also makes the surface of the cover plate 2 easy to scrub. When the first fan 4 is working, it blows air upward, and it is difficult for external dust to enter the box body 1 through the first fan 4 in the working state. After the cover plate 2 is flipped over, the angle between the cover plate 2 and the first fan box 3 is greater than ninety degrees. On the one hand, the cover plate 2 can be maintained in the flipped over state due to its own gravity, and on the other hand, it can also prevent the cover plate 2 from affecting the gas flow efficiency of the air flowing out along the axis of the first fan 4.

[0038] See also Figure 8-10 The width of the vent 1401 is greater than the thickness of the barrier net 17, so that the incoming air can have a larger contact area with the barrier net 17 after passing through the vent 1401, which can effectively improve the gas flow efficiency of the incoming air. When the second fan 16 is working, since the bottom plate 14 is a certain distance away from the bottom surface of the inner wall of the box body 1, the negative pressure generated by the operation of the second fan 16 is not enough to suck in the dust accumulated in the box body 1 and blow it upwards. In the process that the protrusion 1702 of the barrier net 17 is hit and vibrated by the hammer 21, the rotation speed of the second fan 16 is not high, and the negative pressure generated is not enough to suck in the dust that has been shaken off and blow it upwards.

[0039] The working principle of the present invention is as follows: when the computer is turned on, the first fan 4 in the first fan box 3 is started, and the first fan 4 directly drives the driving disk 5 to rotate. In the process of gradually increasing the speed of the driving disk 5, the centrifugal force exerted on the plug post 501 is not enough to overcome the elastic force of the spring, and the plug post 501 is not retracted into the driving disk 5. The plug post 501 is engaged with the engaging piece 601 to make the driving disk 5 transmit the power to the driven post 6. The driven post 6 makes the cover plate 2 open through the transmission component. After the cover plate 2 rotates past the vertical position, the speed of the first fan 4 is increased to a stable state at the same time. At this time, the centrifugal force of the plug post 501 overcomes the elastic force of the spring, and the plug post 501 is retracted into the driving disk 5 and disengaged from the engaging piece 601. The cover plate 2 is automatically opened when the computer is turned on. When the computer is turned off, the first fan 4 reduces its speed. During the process, the centrifugal force on the plug post 501 is reduced and it extends from the driving disk 5 to cooperate with the driven post 6, so that the cover 2 continues to rotate in the opening direction. The lower end of the cover 2 compresses the spring sheet 12, and the spring sheet 12 accumulates elastic potential energy. The elastic potential energy of the spring sheet 12 is used to push the cover 2 to rotate in the opposite direction after the cover 2 is opened and stops rotating, so that the cover 2 rotates in the closing direction, and the cover 2 rotates until it passes the vertical position. The cover 2 can be flipped over and closed by its own gravity, and the closing of the cover 2 is automatically completed when the computer is shut down. When the computer is working, the second fan 16 under the box 1 works synchronously to blow air upwards, and the first fan 4 also works to blow air upwards, so that the gas in the box 1 flows upward efficiently, maintaining the efficient heat dissipation capacity in the box while providing good protection for the box 1.

[0040] Although an embodiment of the present invention has been shown and described, this specific embodiment is only an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A computer case capable of automatic protection, comprising a case body (1), characterized in that: A first fan box (3) is installed on the top of the box body (1), and a cover plate (2) for covering the first fan box (3) is rotatably connected thereto; at least one first fan (4) is arranged in the first fan box (3); the cover plate (2) can be opened when the first fan (4) is started, and closed when the first fan (4) is stopped; an air inlet assembly for blowing air into the box body (1) is installed at the bottom end of the box body (1), and a dust filter assembly is arranged at the air inlet.

2. The computer case capable of automatic protection according to claim 1, characterized in that: The first fan (4) is connected to an annular drive disk (5) via a transmission assembly, a driven column (6) is coaxially arranged at the center of the drive disk (5), the drive disk (5) and the driven column (6) are both rotatably connected in the first fan box (3), the outer wall of the driven column (6) is connected to the card plate (601) at intervals in the annular direction, and a plug column (501) capable of cooperating with the card plate (601) is radially slidably connected to the inner side of the drive disk (5), and the plug column (501) is away from the driven column (6). A spring is arranged between the end and the inner wall of the driving disk (5). During the process of gradually increasing the rotation speed of the driving disk (5), the plug column (501) will slide into the driving disk (5) away from the clamping plate (601) until it is completely out of contact with the clamping plate (601). Conversely, the driven column (6) drives the cover plate (2) to open through the transmission component. The top of the box body (1) is fixedly connected with a spring plate (12). After the cover plate (2) is opened and exceeds the vertical state, it is blocked by the spring plate (12).

3. The computer case capable of automatic protection according to claim 1, characterized in that: The bottom end of the box body (1) is connected with a top plate (13) and a bottom plate (14) which are parallel to each other at intervals in the vertical direction; the top plate (13) and the bottom plate (14) are both trapezoidal structures; at least one second fan box (15) is arranged between the planes of the top plate (13) and the bottom plate (14); the inclined surface of the bottom plate (14) is provided with ventilation holes (1401) at intervals; a blocking net (17) which passes through the ventilation hole (1401) and is in a taut state is fixedly connected between the top plate (13) and the inner wall of the box body (1); the blocking net (17) is used to block dust.

4. The computer case capable of automatic protection according to claim 3, characterized in that: The top frame of the blocking net (17) is fixedly connected to a transmission rod (1701) extending in the direction of the second fan box (15); a second fan (16) is arranged inside the second fan box (15), and driven disks (18) are rotatably connected on both sides; a transmission assembly is arranged between the driven disk (18) and the second fan (16); the rotating shaft of the driven disk (18) is fixedly connected to a fixed cylinder (19) in the radial direction; a telescopic column (20) is slidably connected inside the fixed cylinder (19); a spring is arranged between the end of the telescopic column (20) and the inner wall of the fixed cylinder (19); a hammer (21) is fixedly connected to the end of the telescopic column (20); a protrusion (1702) is arranged at the end of the transmission rod (1701); the telescopic column (20) will extend as the rotation speed of the driven disk (18) increases, and the hammer (21) can hit the protrusion (1702) during the start and stop process of the second fan (16).

5. The computer case capable of automatic protection according to claim 2, characterized in that: The top end of the box body (1) is rotatably connected to a cover plate shaft (11), the cover plate shaft (11) is fixedly connected to the edge of the cover plate (2), a driven gear disc (10) is fixedly connected to the cover plate shaft (11), a driving gear disc (9) meshing with the driven gear disc (10) is rotatably connected inside the first fan box (3), the rotating shaft of the driving gear disc (9) is rotatably connected to the rotating shaft of a second bevel gear (8) rotatably arranged in the first fan box (3) through a transmission belt, the second bevel gear (8) meshes with a first bevel gear (7), the first bevel gear (7) is rotatably connected in the first fan box (3), and a transmission belt is connected between the rotating shaft of the first bevel gear (7) and the driven column (6).

6. The computer case capable of automatic protection according to claim 5, characterized in that: The first fan box (3) is arranged obliquely on the top surface of the box body (1); and when the cover plate (2) is opened, the included angle between the cover plate (2) and the surface of the first fan box (3) is greater than ninety degrees.

7. The computer case capable of automatic protection according to claim 4, characterized in that: The width of the ventilation opening (1401) is greater than the thickness of the barrier net (17).

8. The computer case capable of automatic protection according to claim 3, characterized in that: Both sides of the box body (1) are fixedly connected with side panels (101), and the bottom ends of the side panels (101) are flush with the bottom ends of the inclined surfaces of the top panels (13).

9. The computer case capable of automatic protection according to claim 6, characterized in that: When the first fan (4) is started up, the cover plate (2) touches the spring sheet (12) and does not compress the spring sheet (12); during the stoppage of the first fan (4), the spring sheet (12) is compressed, and the elastic potential energy released by the spring sheet (12) after compression can cause the cover plate (2) to rotate toward the first fan box (3) to a vertical state beyond the cover plate (2).

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