Active heat dissipation type USB portable network card
By using a dual-ball centrifugal silent fan and temperature control system in the portable network card, the heat dissipation and noise problems during high-speed transmission are solved, achieving efficient and stable data transmission and low-noise design.
Patent Information
- Application Number
- CN202422746481.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-12
AI Technical Summary
Existing portable network cards generate a lot of heat during high-speed network transmission. Traditional passive cooling devices are difficult to effectively cool down, resulting in poor network stability, and the active fan design causes serious noise pollution.
A double-ball centrifugal silent fan is embedded in the heat sink fins. Combined with a temperature control probe and speed control line, it monitors the chip temperature and adjusts the fan speed to achieve active heat dissipation while maintaining a small product size and low noise.
It effectively reduces the temperature of the network card chip, improves network stability and data transmission reliability, reduces noise pollution, and enhances user experience.
Smart Images
Figure CN223488337U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of portable network card technology, and more specifically, to an active heat dissipation USB portable network card. Background Technology
[0002] USB portable network adapters are common network conversion devices on the market. They use a conversion chip to convert network input data from the USB port to data output through the RJ45 interface, thus expanding the network ports of some user devices.
[0003] Most portable network cards currently available use plastic or aluminum alloy components, which generate a lot of heat, have an excessively large casing, and generally offer network speeds of 1G and 2.5G, resulting in poor transmission rates. Even some 10G ultra-high-speed network data transmissions generate significant heat from the chip, making it difficult for traditional passive cooling devices to suppress the high temperatures. While active fan designs result in large product sizes, using fixed-speed fans leads to significant wind and mechanical noise. Furthermore, as network supply devices, portable network cards are often left in occupied environments for extended periods, causing noise pollution and significantly impacting the user experience. Utility Model Content
[0004] The purpose of this invention is to provide an active heat dissipation USB portable network card. This USB portable network card, while maintaining a small product size, is designed with an active heat dissipation module, which can solve the problems of high temperature during high-speed network transmission of existing USB network cards, resulting in poor network stability, packet loss, and data loss. It adopts a dual ball bearing centrifugal silent fan embedded in the heat dissipation fins, which reduces the installation thickness while minimizing fan noise and mechanical noise, thereby improving the operational stability and data transmission stability of the USB portable network card.
[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:
[0006] An active heat dissipation USB portable network card includes an upper cover and a lower cover. A rectangular shell with open upper and lower sides is provided between the upper and lower cover. The upper cover and the lower cover are respectively connected to the rectangular shell by upper cover fixing screws and lower cover fixing screws at the four corners. A network port mounting slot is opened in the middle of the front side of the rectangular shell. Several discretely distributed circular air inlets are machined on the front side surface of the rectangular shell on both sides of the network port mounting slot, and several elliptical air inlets are machined on the front side surface of the rectangular shell above the network port mounting slot. A data port mounting slot is opened in the middle of the rear side of the rectangular shell, and several air outlet grilles are machined on the rear side surface of the rectangular shell above the data port mounting slot.
[0007] As a further optimization of this solution, motherboard mounting studs and heat dissipation module mounting studs are installed from the outside to the inside at the four corners of the upper surface of the lower cover plate through screw holes. The motherboard mounting studs are used to fix the PCB motherboard to the upper position of the lower cover plate by motherboard mounting screws, and the heat dissipation module mounting studs are used to fix the heat dissipation module above.
[0008] As a further optimization of this solution, the heat dissipation module is fixed with long screws. The heat dissipation module includes heat dissipation fins and a dual ball bearing centrifugal silent fan. The heat dissipation fins have an L-shaped vertical cross section, and the dual ball bearing centrifugal silent fan is embedded and installed above the horizontal section of the L-shape by long screws. The heat dissipation fins are attached to the top of the PCB motherboard and filled with thermal grease in the middle.
[0009] As a further optimization of this solution, the PCB motherboard has a USB4 interface on one side and an RJ45 interface on the other side. A network card chip is located in the middle of the PCB motherboard, and a control chip is also located on the PCB motherboard on the side of the network card chip. The USB4 interface and the RJ45 interface are respectively aligned and embedded into the network port mounting slot and the data port mounting slot on the surface of the rectangular shell.
[0010] As a further optimization of this solution, the control chip is connected to the network card chip and the dual ball bearing centrifugal silent fan through a temperature control probe and a speed control line, respectively.
[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows:
[0012] In this invention, the heat dissipation module is fixed to the studs on the lower cover plate with long screws. Above the PCB, aluminum heat sink fins are attached to the network card chip. Thermal grease is used to fill the contact gap between the metal fins and the chip, and thermal pads are used to fill the gaps of the remaining chips. This allows the heat from the network card chip to be quickly conducted to the metal fins. A dual ball bearing centrifugal silent fan is placed on the metal fins to force cool air to be drawn in from the RJ45 port side, pass through the heat dissipation metal fins, and be exhausted from the exhaust grille on the USB4 interface side. Furthermore, a temperature control probe is added next to the network card chip on the PCB to monitor the network card chip temperature and control the chip to reasonably adjust the speed of the dual ball bearing centrifugal silent fan according to the monitored temperature, minimizing the impact of noise on the product while ensuring normal operation. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the disassembled structure of the USB portable network card of this utility model;
[0014] Figure 2 This is a schematic diagram of the disassembled structure of the heat dissipation module of this utility model;
[0015] In the diagram: 1. Top cover fixing screws; 2. Top cover plate; 3. Bottom cover fixing screws; 4. Rectangular outer shell; 5. Motherboard fixing screws; 6. Heatsink module fixing studs; 7. Motherboard fixing studs; 8. Bottom cover plate; 9. Long screws; 10. Dual ball bearing centrifugal silent fan; 11. Heatsink fins; 12. USB4 interface; 13. RJ45 interface; 14. PCB motherboard. Detailed Implementation
[0016] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.
[0017] To address the issues of large size and high noise levels caused by fixed-speed fans in existing portable network cards, which utilize active fans, and the prolonged use of portable network cards in occupied environments, thus contributing to noise pollution and negatively impacting user experience, the following solutions are proposed. Figure 1 As shown, this application includes an upper cover plate 2 and a lower cover plate 8. A rectangular shell 4 with hollowed-out upper and lower sides is provided between the upper cover plate 2 and the lower cover plate 8. The upper cover plate 2 and the lower cover plate 8 are respectively connected to the rectangular shell 4 in the middle by upper cover fixing screws 1 and lower cover fixing screws 3 at the four corners. A mesh port mounting slot is provided at the middle of the front side of the rectangular shell 4. Several discretely distributed circular air inlets are processed on the front side surface of the rectangular shell on both sides of the mesh port mounting slot, and several elliptical air inlets are processed on the front side surface of the rectangular shell 4 above the mesh port mounting slot. A data port mounting slot is provided at the middle of the rear side of the rectangular shell 4, and several air outlet grilles are processed on the rear side surface of the rectangular shell above the data port mounting slot. A motherboard fixing stud 7 and a heat dissipation module fixing stud 6 are installed from the outside to the inside at the four corners of the upper surface of the lower cover plate 8 through screw holes. The PCB motherboard 14 is fixed to the upper position of the lower cover plate 8 by motherboard fixing screws 5 above the motherboard fixing stud 7, and the heat dissipation module fixing stud 6 is used to fix the heat dissipation module above.
[0018] like Figure 2 As shown, the heat dissipation module is fixed with long screws 9. The heat dissipation module includes heat dissipation fins 11 and dual ball bearing centrifugal silent fan 10. The heat dissipation fins 11 have an L-shaped vertical cross section, and the dual ball bearing centrifugal silent fan 10 is installed above the horizontal section of the L-shaped section by long screws 9. This installation method can reduce the thickness of the heat dissipation module, ensure the product is small in size, and is easy to carry.
[0019] Heat sink 11 is attached to the top of PCB motherboard 14 and filled with thermal grease. One side of the PCB motherboard 14 has a USB4 interface 12 and the other side has an RJ45 interface 13. A network card chip is located in the middle of the PCB motherboard 14 and a control chip is also located on the PCB motherboard 14 on the side of the network card chip. The USB4 interface 12 and the RJ45 interface 13 are respectively aligned and embedded into the network port mounting slot and the port mounting slot on the surface of the rectangular shell 4.
[0020] Specifically, the control chip is connected to the network card chip and the dual ball bearing centrifugal silent fan 10 via a temperature control probe and a speed control cable, respectively. While monitoring the temperature of the network card chip, the control chip rationally schedules the speed of the dual ball bearing centrifugal silent fan 10 based on the monitored temperature. Under the premise of ensuring normal operation, it minimizes the impact of noise on the product. When the dual ball bearing centrifugal silent fan 10 starts, external cold air is drawn in through several circular and several elliptical air inlets on the RJ45 interface side, and the heat conducted by the heat dissipation metal fins is blown out. The heat is then discharged from the exhaust grille on the USB4 interface side, thereby achieving heat dissipation for the network card chip and solving the problems of high temperature during high-speed network transmission of existing USB network cards, which leads to poor network stability, packet loss, and data loss.
[0021] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.
[0022] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. 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 can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. An active heat dissipation USB portable network card, characterized in that: The device includes an upper cover plate and a lower cover plate. A rectangular outer shell with open upper and lower sides is provided between the upper and lower cover plates. The upper cover plate and the lower cover plate are respectively connected to the rectangular outer shell through upper cover fixing screws and lower cover fixing screws at the four corners. A mesh mounting groove is opened at the middle of the front side of the rectangular outer shell. Several discretely distributed circular air inlets are machined on the front side surface of the rectangular outer shell on both sides of the mesh mounting groove, and several elliptical air inlets are machined on the front side surface of the rectangular outer shell above the mesh mounting groove. A data port mounting groove is opened at the middle of the rear side of the rectangular outer shell, and several air outlet grilles are machined on the rear side surface of the rectangular outer shell above the data port mounting groove.
2. The active heat dissipation USB portable network card according to claim 1, characterized in that: The lower cover plate has motherboard mounting studs and heat dissipation module mounting studs installed from the outside to the inside at the four corners of its upper surface through screw holes. The motherboard mounting studs are used to fix the PCB motherboard to the upper position of the lower cover plate by motherboard mounting screws, and the heat dissipation module mounting studs are used to fix the heat dissipation module above.
3. The active heat dissipation USB portable network card according to claim 2, characterized in that: The heat dissipation module is fixed with long screws. The heat dissipation module includes heat dissipation fins and a dual ball bearing centrifugal silent fan. The heat dissipation fins have an L-shaped vertical cross section, and the dual ball bearing centrifugal silent fan is embedded and installed above the horizontal section of the L-shaped vertical cross section by long screws. The heat dissipation fins are attached to the top of the PCB motherboard and filled with thermal grease.
4. The active heat dissipation USB portable network card according to claim 3, characterized in that: The PCB motherboard has a USB4 interface on one side and an RJ45 interface on the other side. A network card chip is located in the middle of the PCB motherboard, and a control chip is also located on the PCB motherboard on the side of the network card chip. The USB4 interface and the RJ45 interface are respectively aligned and embedded into the network port mounting slot and the data port mounting slot on the surface of the rectangular shell.
5. The active heat dissipation USB portable network card according to claim 4, characterized in that: The control chip is connected to the network card chip and the dual ball bearing centrifugal silent fan via a temperature control probe and a speed control line, respectively.