Independent heat dissipation hole channel structure of multi-interface USB hub

Abstract

The utility model belongs to multi -interface USB concentrator technical field especially for a kind of independent heat dissipation hole structure of multi -interface USB concentrator, including concentrator body, the surface of the concentrator body is connected with several groups of wiring port, the inside of the concentrator body is equipped with heat dissipation component, and the device is accurately corresponding by the heat dissipation component being set, heat dissipation air duct and wiring port, so that the heat dissipation airflow can form the directional transport path of point-to-point, avoid the problem that airflow disperses in traditional overall heat dissipation, local cooling is insufficient, simultaneously, with the real-time closure control of idle port air duct by the help of plugging plate, the cold air generated by heat dissipation fan can be all concentrated and guided to the heating port of equipment that has been accessed, let the limited wind power resource efficiently act on core heating point, significantly reduce the temperature of port and connected equipment, reduce the transmission lag, equipment crash and other problems caused by overheating from the root, substantially improve the stability and reliability of concentrator operation.

Description

Technical Field

[0001] This utility model relates to the field of multi-interface USB hub technology, and in particular to an independent heat dissipation channel structure for a multi-interface USB hub. Background Technology

[0002] With the increasing prevalence of digital offices and smart homes, multi-port USB hubs serve as the core hubs for connecting various devices such as computers, mobile phones, external hard drives, and printers. The number of ports on these hubs continues to increase, and the integration of devices and data transmission rates are also constantly improving. However, when the ports are connected to devices and are engaged in high-speed data interaction or power supply, a large amount of heat is generated. Heat dissipation has become a key bottleneck restricting the performance and reliability of hubs.

[0003] Traditional multi-port USB hubs generally adopt an integrated heat dissipation design, which uses a single heat dissipation channel and a cooling fan to achieve internal cooling. This design has significant drawbacks: the heat dissipation airflow diffuses aimlessly inside the device, failing to accurately cover the heat-generating connection ports. This easily leads to localized overheating and overall inefficiency. Especially when some ports are connected to high-power devices and the rest are idle, the limited airflow resources are dispersed to areas without heat generation requirements, resulting in insufficient cooling of core heat-generating points. This can cause data transmission lag, unstable device recognition, or even system crashes, severely impacting the user experience. Utility Model Content

[0004] To overcome the technical defects of the existing technology, this utility model provides an independent heat dissipation channel structure for a multi-interface USB hub.

[0005] The technical solution adopted by this utility model is as follows: It includes a hub body, the surface of which is connected to several sets of wiring ports. A heat dissipation assembly is installed inside the hub body. The heat dissipation assembly includes a dust filter detachably connected to one side of the hub body surface. A cooling fan is fixed inside the hub body near the dust filter. A ventilation duct is fitted onto the surface of the cooling fan and fixed inside the hub body. A heat dissipation air channel is fixed on the surface of the ventilation duct facing the multiple sets of wiring ports. A sealing plate is installed inside the heat dissipation air channel. The wiring ports are used to connect the hub to external devices, meeting the needs of multiple devices operating simultaneously. The dust filter can filter dust and impurities in the outside air, preventing dust from entering the hub body and affecting the operation of components. After the cooling fan starts, it generates airflow, which is guided through the ventilation duct and distributed to each cooling air channel, specifically cooling the corresponding wiring port and surrounding heat-generating components. The sealing plate can control the on / off state of the cooling air channels. When the wiring port is not in use, the air channel is closed to reduce dust entry and internal heat loss and waste. When in use, the air channel is opened to ensure the cooling effect, realizing the on-demand switching between heat dissipation and dust prevention.

[0006] Preferably, a rotating shaft is fixed to the surface of the sealing plate. The rotating shaft is rotatably connected to the inside of the heat dissipation duct. Gears are fixed to both ends of the rotating shaft. A rack is meshed with the surface of the gear. A connecting plate is fixed to the surface of the rack, and the top of the connecting plate is connected to the surface of the protective plate. The protective plate is slidably connected to the surface of the hub body, and the position of the protective plate corresponds one-to-one with the wiring port. The protective plate can cover the surface of the wiring port when it is not in use to prevent dust, water stains, or foreign objects from entering the port and causing damage, thus protecting the port's cleanliness and structural integrity. When the protective plate is pushed open, the rack moves synchronously through the connecting plate. The rack and gear mesh and drive the rotating shaft to rotate, thereby causing the sealing plate to rotate and open the heat dissipation duct. This achieves linkage control from the opening of the protective plate to the opening of the duct, allowing for simultaneous activation of heat dissipation without additional operation, improving ease of use. The rotating shaft provides stable rotational support for the sealing plate, ensuring smooth opening and closing of the duct.

[0007] Preferably, a second spring is fixed to the surface of the connecting plate, and the other end of the second spring is fixed inside the hub body. When the protective plate is not pushed by external force, the second spring is in a naturally extended state, and the protective plate completely covers the surface of the wiring port. The second spring provides a reset pull for the connecting plate through its own elastic force. When the external device is pulled out from the wiring port and the protective plate loses external force, the second spring drives the connecting plate and the rack to move in the opposite direction. Through the transmission of the gear and the rotating shaft, the sealing plate is rotated back to its original position to close the heat dissipation air duct. At the same time, the protective plate is pulled to automatically reset and cover the wiring port again, realizing automatic linkage from the device being pulled out to the protective plate closing and then to the air duct sealing. No manual operation is required, which not only ensures the protective effect when the port is idle, but also avoids dust entering or energy waste caused by the continuous opening of the air duct.

[0008] Preferably, each of the four corners of the dust filter is fixed with a locking seat, and a pull handle is fixed between two sets of locking seats on the same side. A locking block is slidably connected inside the hub body near the locking seat. A spring is fixed between the locking block and the hub body. A pull rod is fixed to the surface of the locking block. A locking hole adapted to the locking block is opened on the surface of the locking seat. The pull rod is slidably connected in a groove opened inside the hub body. The spring pushes the locking block into the locking hole of the locking seat through elastic force, realizing the quick locking and fixing of the dust filter and the hub body, ensuring that the dust filter is installed firmly and not easily loosened. When it is necessary to clean or replace the dust filter, pulling the pull rod can drive the locking block to compress the spring and disengage from the locking hole. After unlocking, the dust filter can be easily removed by pulling the handle. The entire disassembly and assembly process does not require tools, is convenient to operate, and facilitates regular maintenance of the dust filter to ensure its dust filtration effect and the ventilation efficiency of the heat dissipation components.

[0009] Preferably, the ventilation duct and the heat dissipation air duct are integrally formed, and the number of heat dissipation air ducts is consistent with the number of wiring ports. Each set of heat dissipation air ducts independently corresponds to a set of wiring ports. The end of the heat dissipation air duct away from the ventilation duct extends to the wiring port. The integrally formed structure enhances the connection strength between the ventilation duct and the heat dissipation air duct, avoids gaps at the connection point that could lead to airflow leakage, and ensures efficient heat dissipation airflow transmission. The one-to-one correspondence between the heat dissipation air duct and the wiring port, extending to the port, allows the airflow generated by the cooling fan to be accurately delivered to the heat-generating area of ​​each set of wiring ports, achieving one-to-one directional heat dissipation, avoiding heat interference between different ports, and improving the targeting and efficiency of single-port heat dissipation.

[0010] Preferably, the hub body has a guide groove inside that matches the connecting plate. The connecting plate is slidably connected inside the guide groove. The extension direction of the guide rail is consistent with the sliding direction of the protective plate, and the length of the guide rail is not less than the moving distance when the protective plate is fully open. The guide groove provides a stable sliding trajectory for the connecting plate, restricting the connecting plate to move only along the sliding direction of the protective plate. This avoids misalignment of the connecting plate, which could cause the rack and gear to mesh incorrectly, preventing the protective plate from opening or closing smoothly. The length of the guide rail meets the movement requirements for the protective plate to be fully opened, ensuring that the protective plate can be completely detached from the surface of the wiring port without affecting the insertion port of the external device plug. At the same time, it ensures that the stroke of the connecting plate driving the rack is sufficient to allow the sealing plate to fully open the heat dissipation air duct, ensuring smooth airflow for heat dissipation.

[0011] Preferably, the surface of the dust filter has several sets of evenly distributed dust filter holes, and the edge of the dust filter is fixed with a sealing strip. The sealing strip is tightly attached to the surface of the hub body. The evenly distributed dust filter holes ensure that air can pass through smoothly without obstructing the air intake of the cooling fan, while effectively intercepting dust particles in the air and preventing dust from entering the hub body and adhering to the surface of electronic components, thus avoiding affecting the heat dissipation and service life of the components. The sealing strip fills the gap between the dust filter and the hub body, preventing unfiltered air from entering the interior through the gap, ensuring that all air entering the hub is filtered by the dust filter, improving the dust filtration effect, and enhancing the sealing of the hub body to reduce the intrusion of external moisture or small impurities.

[0012] Preferably, the air inlet of the cooling fan faces the dust filter, and the air outlet is completely embedded inside the ventilation duct. A sealing gasket is fixed at the connection between the cooling fan and the ventilation duct. The air inlet of the cooling fan faces the dust filter, allowing it to directly draw in filtered clean air, avoiding the intake of unfiltered air that could cause dust to enter the fan or subsequent air duct. The air outlet is completely embedded in the ventilation duct and fitted with a sealing gasket, eliminating gaps at the connection and preventing airflow generated by the cooling fan from leaking out. This ensures that all airflow enters the ventilation duct and is delivered to the wiring port through the cooling duct, maximizing the use of the fan's airflow and improving heat dissipation efficiency. At the same time, it prevents leaked airflow from spreading internal dust and keeps the inside of the hub clean.

[0013] The beneficial effects of this utility model are: 1. Through the specially designed heat dissipation components, the heat dissipation efficiency is optimized to the extreme, ensuring stable operation of the equipment. The heat dissipation air ducts and wiring ports are precisely matched one by one, so that the heat dissipation airflow can form a point-to-point directional delivery path, avoiding the problems of airflow dispersion and insufficient local cooling in traditional overall heat dissipation. At the same time, with the help of the sealing plate to control the real-time closure of the air ducts of idle ports, all the cold air generated by the cooling fan can be concentrated and directed to the heat-generating ports of the connected equipment. This allows the limited airflow resources to be used efficiently on the core heat-generating points, significantly reducing the temperature of the ports and connected equipment. This reduces problems such as transmission interruption and equipment crashes caused by overheating from the root, and greatly improves the stability and reliability of the hub operation.

[0014] 2. Before external cold air enters the equipment, it must first pass through the dust filter holes evenly distributed on the surface of the dust filter screen for the first layer of dust filtration. This can effectively block dust, lint and other impurities in the air from entering the interior. In addition, when idle, the protective plate covering the port and the sealing plate closing the air duct form a double protection, completely blocking the channel for dust to enter the equipment, reducing the corrosion of circuit components and fan blades by dust adhesion, and significantly extending the overall service life of the hub.

[0015] 3. When an external device is inserted, the device itself can push the protective plate to trigger the linkage, completing the automatic opening of the sealing plate and the connection of the air duct. After the device is pulled out, spring two can drive each component to automatically reset, realizing the closure of the air duct and port protection. The whole process is responsive and smooth, improving the utilization rate of heat dissipation resources, preventing cold air from flowing to idle ports that do not require heat generation, and concentrating all the air force generated by the cooling fan on the working ports. There is no need to increase the fan power to enhance the heat dissipation effect. While ensuring heat dissipation efficiency, it reduces power consumption and achieves precise allocation of heat dissipation resources and energy-saving operation.

[0016] 4. When cleaning or replacing the dust filter, simply pull the lever to disengage the locking block from the locking hole of the locking seat via mechanical linkage, and then use the pull handle to remove the dust filter directly. No tools are required throughout the process. During installation, the operation is reversed, and the spring can drive the locking block to automatically snap into the locking hole to complete the fixation. This greatly simplifies the maintenance process, lowers the user's operating threshold, and allows the dust filter to be quickly disassembled and cleaned, which can promptly remove the obstruction of accumulated dust to the air intake, ensuring sufficient air intake of the cooling fan and maintaining the efficiency of the cooling system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the hub body and the protective plate in this utility model; Figure 3 This is a cross-sectional view of the hub body in this utility model; Figure 4 This is a cross-sectional view of the ventilation duct and heat dissipation air duct in this utility model; Figure 5 This is a schematic diagram of the structure of the collector body and the dust filter screen in this utility model; Figure 6 In this utility model Figure 5 Enlarged view of point A; Figure 7 This is a schematic diagram of the connecting plate and the protective plate in this utility model.

[0018] Explanation of reference numerals in the attached diagram: 1. Hub body; 2. Wiring port; 3. Heat dissipation component; 4. Dust filter; 5. Cooling fan; 6. Ventilation duct; 7. Heat dissipation air duct; 8. Sealing plate; 9. Rotating shaft; 10. Gear; 11. Rack; 12. Connecting plate; 13. Protective plate; 14. Locking seat; 15. Pull handle; 16. Locking block; 17. Spring 1; 18. Pull rod; 19. Spring 2. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings: like Figures 1 to 7As shown, this embodiment provides an independent heat dissipation channel structure for a multi-interface USB hub, including a hub body 1. Several sets of connection ports 2 are connected to the surface of the hub body 1. A heat dissipation assembly 3 is installed inside the hub body 1. The heat dissipation assembly 3 includes a dust filter 4 detachably connected to one side of the surface of the hub body 1. A cooling fan 5 is fixed inside the hub body 1 near the dust filter 4. A ventilation duct 6 is sleeved on the surface of the cooling fan 5 and fixed inside the hub body 1. A heat dissipation air duct 7 is fixed on the side of the ventilation duct 6 facing the multiple sets of connection ports 2. A sealing element is provided inside the heat dissipation air duct 7. The blocking plate 8 and the wiring port 2 are used to connect the hub to external devices, meeting the needs of multiple devices being used simultaneously. The dust filter 4 can filter dust and impurities in the outside air, preventing dust from entering the hub body 1 and affecting the operation of the components. After the cooling fan 5 is started, it generates airflow, which is guided by the ventilation duct 6 and distributed to each cooling air channel 7, specifically cooling the corresponding wiring port 2 and surrounding heat-generating components. The blocking plate 8 can control the on / off state of the cooling air channel 7. When the wiring port 2 is not in use, the air channel is closed to reduce dust entry and internal heat loss and waste. When in use, the air channel is opened to ensure the heat dissipation effect, realizing the on-demand switching between heat dissipation and dust prevention.

[0020] A rotating shaft 9 is fixed to the surface of the sealing plate 8. The rotating shaft 9 is rotatably connected to the inside of the heat dissipation duct 7. Gears 10 are fixed to both ends of the rotating shaft 9. A rack 11 is meshed with the surface of the gear 10. A connecting plate 12 is fixed to the surface of the rack 11, and the top of the connecting plate 12 is connected to the surface of the protective plate 13. The protective plate 13 is slidably connected to the surface of the hub body 1, and the position of the protective plate 13 corresponds one-to-one with the wiring port 2. The protective plate 13 can cover the surface of the wiring port 2 when it is not in use to prevent dust, water stains or foreign objects from entering the port and causing damage, thus protecting the port from damage and maintaining its cleanliness and structural integrity. When the protective plate 13 is pushed open, the rack 11 is moved synchronously through the connecting plate 12. The rack 11 meshes with the gear 10, which drives the rotating shaft 9 to rotate, thereby causing the sealing plate 8 to rotate and open the heat dissipation duct 7. This achieves the linkage control from the opening of the protective plate 13 to the opening of the duct. Heat dissipation can be opened synchronously without additional operation, improving ease of use. The rotating shaft 9 provides stable rotation support for the sealing plate 8, ensuring smooth opening and closing of the duct.

[0021] A second spring 19 is fixed to the surface of the connecting plate 12. The other end of the second spring 19 is fixed inside the hub body 1. When the protective plate 13 is not pushed by external force, the second spring 19 is in a naturally extended state, and the protective plate 13 completely covers the surface of the wiring port 2. The second spring 19 provides a reset pull for the connecting plate 12 through its own elastic force. When the external device is pulled out from the wiring port 2 and the protective plate 13 loses external force, the second spring 19 drives the connecting plate 12 and the rack 11 to move in the opposite direction. Through the transmission of the gear 10 and the rotating shaft 9, the sealing plate 8 is rotated back to its original position to close the heat dissipation air duct 7. At the same time, the protective plate 13 is pulled to automatically reset and cover the wiring port 2 again, realizing the automatic linkage from the device being pulled out to the protective plate 13 closing and then to the air duct being sealed. No manual operation is required. This ensures the protective effect when the port is idle and avoids dust entering or energy waste caused by the continuous opening of the air duct.

[0022] Each of the four corners of the dust filter 4 is fixed with a locking seat 14. A pull handle 15 is fixed between two sets of locking seats 14 on the same side. A locking block 16 is slidably connected to the inside of the hub body 1 near the locking seat 14. A spring 17 is fixed between the locking block 16 and the hub body 1. A pull rod 18 is fixed to the surface of the locking block 16. A locking hole adapted to the locking block 16 is opened on the surface of the locking seat 14. The pull rod 18 is slidably connected in a groove opened inside the hub body 1. The spring 17 is pushed by elastic force. The locking block 16 is embedded in the locking hole of the locking seat 14 to achieve quick locking and fixation of the dust filter 4 and the hub body 1, ensuring that the dust filter 4 is installed firmly and is not easy to loosen. When it is necessary to clean or replace the dust filter 4, pulling the lever 18 can drive the locking block 16 to compress the spring 17 and disengage from the locking hole. After unlocking, the dust filter 4 can be easily removed by pulling the handle 15. The entire disassembly and assembly process does not require tools, is easy to operate, and facilitates regular maintenance of the dust filter 4 to ensure its dust filtration effect and the ventilation efficiency of the heat dissipation component 3.

[0023] The ventilation duct 6 and the heat dissipation air duct 7 are integrally formed, and the number of heat dissipation air ducts 7 is consistent with the number of wiring ports 2. Each set of heat dissipation air ducts 7 corresponds independently to a set of wiring ports 2. The end of the heat dissipation air duct 7 away from the ventilation duct 6 extends to the wiring port 2. The integrally formed structure enhances the connection strength between the ventilation duct 6 and the heat dissipation air duct 7, avoids gaps at the connection point that could lead to airflow leakage, and ensures efficient heat dissipation airflow transmission. The one-to-one correspondence between the heat dissipation air duct 7 and the wiring port 2, extending to the port, allows the airflow generated by the cooling fan 5 to be accurately delivered to the heat-generating area of ​​each set of wiring ports 2, achieving one-to-one directional heat dissipation, avoiding heat interference between different ports, and improving the targeting and efficiency of single-port heat dissipation.

[0024] The hub body 1 has a guide groove inside that matches the connecting plate 12. The connecting plate 12 is slidably connected inside the guide groove. The extension direction of the guide rail is consistent with the sliding direction of the protective plate 13, and the length of the guide rail is not less than the moving distance when the protective plate 13 is fully opened. The guide groove provides a stable sliding trajectory for the connecting plate 12, restricting the connecting plate 12 to move only along the sliding direction of the protective plate 13. This prevents the connecting plate 12 from shifting, causing the rack 11 and gear 10 to mesh and become misaligned, and the protective plate 13 from being unable to open or close smoothly. The length of the guide rail meets the movement requirements of the protective plate 13 when it is fully opened, ensuring that the protective plate 13 can be completely detached from the surface of the wiring port 2 without affecting the insertion port of the external equipment plug. At the same time, it ensures that the stroke of the connecting plate 12 driving the rack 11 is sufficient, so that the sealing plate 8 can fully open the heat dissipation air duct 7, ensuring smooth airflow for heat dissipation.

[0025] The surface of the dust filter 4 has several sets of evenly distributed dust filter holes. The edge of the dust filter 4 is fixed with a sealing strip. The sealing strip is tightly attached to the surface of the hub body 1. The evenly distributed dust filter holes ensure that the air passes through smoothly and does not obstruct the air intake of the cooling fan 5. At the same time, they can effectively intercept dust particles in the air and prevent dust from entering the hub body 1 and adhering to the surface of electronic components, thus avoiding affecting the heat dissipation and service life of the components. The sealing strip fills the gap between the dust filter 4 and the hub body 1 to prevent unfiltered air from entering the interior through the gap. This ensures that all air entering the hub body 1 is filtered by the dust filter 4, improving the dust filtration effect and enhancing the sealing of the hub body 1, reducing the intrusion of external moisture or small impurities.

[0026] The air inlet of the cooling fan 5 faces the dust filter 4, and the air outlet is completely embedded inside the ventilation duct 6. A sealing gasket is fixed at the connection between the cooling fan 5 and the ventilation duct 6. The air inlet of the cooling fan 5 faces the dust filter 4, which can directly draw in filtered clean air and avoid drawing in unfiltered air, which would cause dust to enter the fan or subsequent air duct. The air outlet is completely embedded in the ventilation duct 6 and is equipped with a sealing gasket to eliminate the gap at the connection between the two, preventing the airflow generated by the cooling fan 5 from leaking out of the gap. This ensures that all airflow enters the ventilation duct 6 and is delivered to the wiring port 2 through the cooling air duct 7, maximizing the use of the fan's airflow and improving the heat dissipation efficiency. At the same time, it prevents the leaked airflow from spreading internal dust and keeps the inside of the hub clean.

[0027] The working principle and usage process of this utility model are as follows: When the hub is powered on, the internal heat dissipation component 3 starts, and the cooling fan 5 draws in external cold air from the opposite dust filter 4. The dust filter 4 filters dust through evenly distributed dust pores on its surface, and the sealing strips at the edges ensure no air leakage and thorough dust prevention. After being pressurized by the cooling fan 5, the cold air is transported through the tightly connected ventilation duct 6. The sealing gasket at the connection between the cooling fan 5 and the ventilation duct 6 prevents airflow loss. The ventilation duct 6 distributes the airflow to the integrally formed cooling air channels 7. The number of cooling air channels 7 corresponds one-to-one with the wiring ports 2. Currently, there is one-to-one independent heat dissipation. At the unused connection port 2, the sealing plate 8 is in a closed state, blocking the airflow of the corresponding air duct and ensuring that all the cold air flows to the used port, thus improving the heat dissipation efficiency. When an external device is inserted into the connection port 2, it pushes the protective plate 13 at the corresponding position to slide. The protective plate 13 drives the connecting plate 12 to slide along the guide groove and compress the spring 19. The connecting plate 12 drives the rack 11 to move. The rack 11 meshes with the drive gear 10 to rotate, which in turn drives the sealing plate 8 to flip open through the rotating shaft 9. The heat dissipation air duct 7 corresponding to the port is then connected, and the cold air directly reaches the heat-generating connection part.

[0028] Furthermore, after the external device is unplugged, spring 19 returns to its natural extended state, pulls the connecting plate 12 to reset, the rack 11 moves in the opposite direction, causing the gear 10 and the rotating shaft 9 to reverse, the sealing plate 8 closes the heat dissipation duct 7 again, and at the same time the protective plate 13 slides back to its original position, completely covering the wiring port 2, realizing the linkage control of turning on when in use and turning off when not in use.

[0029] Furthermore, when the dust filter 4 needs cleaning due to accumulated dust, pull the lever 18 to compress the locking block 16 and spring 17, causing it to disengage from the locking hole on the locking seat 14. At this time, hold the handle 15 to remove the dust filter 4. After cleaning or replacement, install it in reverse order. The locking block 16 will automatically engage with the locking hole of the locking seat 14 under the elastic force of the spring 17 to complete the fixation.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of the invention. All such changes and modifications fall within the scope of the invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. An independent heat dissipation channel structure for a multi-interface USB hub, comprising a hub body (1), characterized in that: The surface of the hub body (1) is connected to several sets of wiring ports (2). A heat dissipation component (3) is installed inside the hub body (1). The heat dissipation component (3) includes a dust filter (4) that is detachably connected to one side of the surface of the hub body (1). A heat dissipation fan (5) is fixed inside the hub body (1) on the side near the dust filter (4). A ventilation duct (6) is sleeved on the surface of the heat dissipation fan (5). The ventilation duct (6) is fixed inside the hub body (1). A heat dissipation air duct (7) is fixed on the side of the ventilation duct (6) facing the multiple sets of wiring ports (2). A sealing plate (8) is provided inside the heat dissipation air duct (7).

2. The independent heat dissipation channel structure of the multi-interface USB hub according to claim 1, characterized in that: The sealing plate (8) has a rotating shaft (9) fixed on its surface. The rotating shaft (9) is rotatably connected to the inside of the heat dissipation duct (7). Both ends of the rotating shaft (9) are fixed with gears (10). The surface of the gears (10) is meshed with a rack (11). The surface of the rack (11) is fixed with a connecting plate (12). The top of the connecting plate (12) is connected to the surface of the protective plate (13). The protective plate (13) is slidably connected to the surface of the hub body (1). The protective plate (13) and the wiring port (2) are in one-to-one correspondence.

3. The independent heat dissipation channel structure of the multi-interface USB hub according to claim 2, characterized in that: A second spring (19) is fixed to the surface of the connecting plate (12). The other end of the second spring (19) is fixed inside the hub body (1). When the protective plate (13) is not pushed by external force, the second spring (19) is in a naturally extended state, and the protective plate (13) completely covers the surface of the wiring port (2).

4. The independent heat dissipation channel structure of the multi-interface USB hub according to claim 1, characterized in that: The dust filter (4) is fixed with a locking seat (14) at each of its four corners. A pull handle (15) is fixed between two sets of locking seats (14) on the same side. A locking block (16) is slidably connected to the inside of the hub body (1) near the locking seat (14). A spring (17) is fixed between the locking block (16) and the hub body (1). A pull rod (18) is fixed to the surface of the locking block (16). A locking hole that matches the locking block (16) is opened on the surface of the locking seat (14). The pull rod (18) is slidably connected in the groove opened inside the hub body (1).

5. The independent heat dissipation channel structure of the multi-interface USB hub according to claim 1, characterized in that: The ventilation duct (6) and the heat dissipation duct (7) are integrally formed, and the number of heat dissipation ducts (7) is consistent with the number of wiring ports (2). Each set of heat dissipation ducts (7) corresponds to a set of wiring ports (2). The end of the heat dissipation duct (7) away from the ventilation duct (6) extends to the wiring port (2).

6. The independent heat dissipation channel structure of the multi-interface USB hub according to claim 2, characterized in that: The hub body (1) has a guide groove inside that is compatible with the connecting plate (12). The connecting plate (12) is slidably connected inside the guide groove. The extension direction of the guide rail is consistent with the sliding direction of the protective plate (13), and the length of the guide rail is not less than the moving distance when the protective plate (13) is fully opened.

7. The independent heat dissipation channel structure of the multi-interface USB hub according to claim 1, characterized in that: The surface of the dust filter (4) is provided with several sets of evenly distributed dust filter holes, and the edge of the dust filter (4) is fixed with a sealing strip, which is tightly attached to the surface of the hub body (1).

8. The independent heat dissipation channel structure of the multi-interface USB hub according to claim 1, characterized in that: The air inlet of the cooling fan (5) is directly opposite the dust filter (4), and the air outlet is completely embedded inside the ventilation duct (6). A sealing gasket is fixed at the connection between the cooling fan (5) and the ventilation duct (6).

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