Direct current cooling fan for graphic card

Abstract

The application belongs to the technical field of heat dissipation fans, especially a direct-current heat dissipation fan for a graphics card, and aims at the problems of the existing traditional heat dissipation fan, such as complicated disassembly and assembly, unstable fixation, easy loosening, lack of temperature monitoring, and inconvenient reasonable adjustment of fan rotating speed, and proposes the following scheme, which comprises a fan main body and a mounting part, the fan main body is composed of a mounting ring and a plurality of fan blades, the plurality of fan blades are fixedly installed on the outer wall of the mounting ring and are uniformly arranged, and a clamping pipe is fixedly installed on the inner wall of the top of the mounting ring; the mounting part is composed of a mounting disc and a driving seat, in the application, the innovative design of the clamping assembly greatly simplifies the installation and disassembly process of the fan; at the same time, the ingenious use of the fixing assembly ensures the stability of the fan on the bracket and guarantees the stability of heat dissipation; the real-time monitoring and intelligent adjustment function of the detection assembly not only ensures the heat dissipation effect, but also effectively reduces the noise and energy consumption.

Description

Technical Field

[0001] This invention relates to the field of cooling fan technology, and more particularly to a DC cooling fan for graphics cards. Background Technology

[0002] With the rapid development of computer technology, graphics cards, as crucial graphics processing components in computers, have seen continuous performance improvements, but their power consumption and heat generation have also increased accordingly. To ensure stable operation of the graphics card, effective heat dissipation measures have become paramount. Traditional graphics card cooling methods primarily rely on heatsinks, heat pipes, and cooling fans in combination to dissipate heat. The performance of the cooling fan directly affects the speed of airflow. However, existing graphics card cooling fans still suffer from the following problems in use:

[0003] The existing cooling fan installation and removal process is cumbersome, which is not conducive to maintenance and replacement. Moreover, the fixing method of the cooling fan is not stable enough and it is easy to loosen after long-term use, which can affect the cooling effect. In addition, traditional cooling fans lack real-time monitoring of the external air intake temperature and the surface temperature of the graphics card, making it difficult to accurately obtain the working status of the graphics card and making it inconvenient to adjust the fan speed reasonably.

[0004] To address the aforementioned issues, this invention proposes a DC cooling fan for graphics cards. Summary of the Invention

[0005] The purpose of this invention is to solve the shortcomings of traditional cooling fans in the prior art, such as cumbersome disassembly and assembly, unstable fixing and easy loosening; and lack of temperature monitoring, making it inconvenient to reasonably adjust the fan speed. Therefore, a DC cooling fan for graphics cards is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Graphics card DC cooling fan, including:

[0008] The fan body consists of a mounting ring and multiple fan blades, all of which are fixedly mounted on the outer wall of the mounting ring and evenly arranged. A retaining tube is fixedly mounted on the top inner wall of the mounting ring. The mounting part consists of a mounting disc and a drive base. A motor is fixedly embedded in the bottom of the drive base. One end of the motor's output shaft rotates through the top of the drive base and is fixedly connected to a connecting shaft. The connecting shaft is fixedly connected to the inner wall of the retaining tube.

[0009] It also includes a circuit board, which is disposed in the mounting part and is electrically connected to the motor;

[0010] It also includes a locking assembly for installing and removing the mounting disc and the drive base;

[0011] It also includes a mounting bracket, which is used to fix the mounting part; both ends of the mounting bracket are fixedly mounted with fixing plates, and both fixing plates have multiple mounting holes inside, which are matched with fixing screws to fix the mounting bracket in the fan slot of the graphics card shell;

[0012] It also includes a fixing component, which is used to install and remove the mounting part and the mounting bracket;

[0013] It also includes a detection component, which is used to detect the ambient air intake temperature and the surface temperature of the graphics card.

[0014] In one possible design, the engaging assembly includes a fixed ring fixedly mounted on one side of the mounting disc, the drive seat slidingly engaging with the inner wall of the fixed ring, two fixed posts fixedly mounted on the outer wall of the drive seat, and two L-shaped slots formed on the outer wall of the fixed ring, one end of each L-shaped slot penetrating the top of the fixed ring, and the two fixed posts engaging with the two L-shaped slots to complete the combined installation of the drive seat and the mounting disc.

[0015] In one possible design, the fixing assembly includes a first mounting plate and a second mounting plate fixedly mounted on the outer wall of the mounting disc, the first mounting plate and the second mounting plate corresponding to each other, a clamping plate fixedly mounted on one side of the first mounting plate, and a C-shaped clamping plate fixedly mounted on the top of the mounting bracket, with a groove formed between the C-shaped clamping plate and the mounting bracket, and the clamping plate cooperating with the groove.

[0016] In one possible design, the fixing assembly further includes a groove fixedly formed at the bottom of the second mounting plate, a fixing rod fixedly installed inside the groove, an L-shaped locking block slidably sleeved on the outer wall of the fixing rod, a sliding groove formed at the top of the second mounting plate, one end of the L-shaped locking block passing through the sliding groove and slidably connected to the inner wall of the sliding groove, a spring sleeved on the outer wall of the fixing rod, one end of the spring being fixedly connected to one side of the L-shaped locking block, and the other end of the spring being fixedly connected to one side of the inner wall of the groove, and an L-shaped limiting groove formed at the top of the mounting bracket, with the L-shaped locking block engaging with the L-shaped limiting groove.

[0017] In one possible design, the detection assembly includes two acquisition boxes fixedly mounted on the outer wall of the mounting disk. Each acquisition box has an acquisition channel inside. Each acquisition box has an air inlet on the side near the fan body, and both air inlets are connected to adjacent acquisition channels. The mounting disk has two air outlets on the side near the mounting bracket, and both air outlets are connected to adjacent acquisition channels. A second temperature sensor is fixedly embedded inside the mounting disk. Two probes of the second temperature sensor penetrate one side of each of the two acquisition channels to detect the temperature of the air flowing through them. A first temperature sensor is fixedly embedded on the side of the mounting disk near the mounting bracket. The first temperature sensor is used to detect the temperature near the graphics card. A through hole is formed at the top of the mounting bracket, and the through hole mates with the first temperature sensor. Both the first and second temperature sensors are electrically connected to the circuit board.

[0018] In one possible design, a plurality of first electrode plates are fixedly mounted on the bottom of the first mounting plate, and the plurality of first electrode plates are electrically connected to the circuit board. A plurality of second electrode plates are fixedly mounted on the top of the mounting bracket, and the plurality of second electrode plates are electrically connected to the graphics card body. The plurality of first electrode plates correspond to the plurality of second electrode plates and are in close contact with each other, for the purpose of providing power to the fan as a whole.

[0019] In one possible design, the top of the mounting disc has a mounting groove that extends through the drive seat, and the circuit board is fixedly mounted in the mounting groove.

[0020] In one possible design, the outer wall of the drive seat is fixedly equipped with a plurality of protrusions, which are located above the fixing post and the fixing ring to increase the frictional force when in contact with the outer wall of the drive seat.

[0021] Beneficial effects: In this invention, the graphics card DC cooling fan, by setting up a snap-fit ​​component, realizes the quick installation and disassembly of the mounting disc and the drive base, simplifies the assembly and maintenance process of the fan, and improves work efficiency. At the same time, the protrusions set on the outer wall of the drive base increase the friction force, making it convenient for users to disassemble and maintain the fan.

[0022] In this invention, the graphics card DC cooling fan is secured to the mounting bracket by setting a fixing component, including a first mounting plate, a second mounting plate, a card plate, a C-shaped card plate, and an L-shaped card block, etc., which ensures the fan is firmly fixed on the mounting bracket, avoids the problem of loosening after long-term use, and ensures the stability of the heat dissipation effect.

[0023] In this invention, the graphics card DC cooling fan, by setting up a detection component including a data acquisition box, an air inlet, an air outlet, a first temperature sensor, and a second temperature sensor, can monitor the external air intake temperature and the surface temperature of the graphics card in real time, and transmit the temperature signal to the circuit board. The circuit board controls the motor speed according to the temperature change, thereby realizing the automatic adjustment of the fan speed, which not only ensures the heat dissipation effect, but also reduces noise and energy consumption.

[0024] In this invention, the graphics card DC cooling fan achieves electrical connection between the fan and the graphics card body by setting a first electrode plate and a second electrode plate, which simplifies the power supply method of the fan and improves the stability and reliability of the power supply.

[0025] In this invention, the graphics card DC cooling fan, through its innovative snap-fit ​​component design, greatly simplifies the installation and disassembly process, improving work efficiency. Simultaneously, the ingenious use of the fixing components ensures the fan's stability on the bracket, preventing loosening even after prolonged use and guaranteeing stable heat dissipation. The real-time monitoring and intelligent adjustment functions of the detection component ensure both effective heat dissipation and reduced noise and energy consumption. The overall structure of the cooling fan is simple and reasonable, achieving a perfect balance between efficient heat dissipation and convenient maintenance. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the graphics card DC cooling fan proposed in this invention;

[0027] Figure 2 This is a three-dimensional structural diagram of the graphics card DC cooling fan proposed in this invention from another perspective.

[0028] Figure 3 This is a schematic diagram of the disassembled structure of the graphics card DC cooling fan proposed in this invention;

[0029] Figure 4 This is a schematic diagram of the disassembled structure of the mounting part of the graphics card DC cooling fan proposed in this invention;

[0030] Figure 5 This is a schematic diagram of the fixing component structure of the graphics card DC cooling fan proposed in this invention;

[0031] Figure 6 This is a cross-sectional view of the mounting disc structure of the graphics card DC cooling fan proposed in this invention.

[0032] Figure 7 This is a schematic diagram of the mounting bracket structure for the graphics card DC cooling fan proposed in this invention.

[0033] In the diagram: 1. Fan body; 2. Mounting section; 3. Mounting bracket; 4. Mounting ring; 5. Fan blade; 6. Clip-on tube; 7. Mounting disc; 8. First mounting plate; 9. Second mounting plate; 10. Clip plate; 11. Fixing ring; 12. L-shaped slot; 13. Drive seat; 14. Fixing post; 15. Protrusion; 16. Motor; 17. Connecting shaft; 18. Mounting groove; 19. Circuit board; 20. Data acquisition box; 21. Air inlet; 22. Air outlet; 23. First electrode plate; 24. First temperature sensor; 25. Groove; 26. Fixing rod; 27. Slide groove; 28. L-shaped clip; 29. ​​Spring; 30. Second temperature sensor; 31. Fixing plate; 32. Mounting hole; 33. L-shaped limiting groove; 34. C-shaped clip plate; 35. Second electrode plate; 36. Through hole. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0035] Example 1: Refer to Figure 1-7 A cooling fan includes: a fan body 1, a mounting part 2, and a mounting bracket 3.

[0036] The fan body 1 consists of a mounting ring 4 and multiple fan blades 5. The fan blades 5 are all fixedly mounted on the outer wall of the mounting ring 4 and evenly arranged. A retaining tube 6 is fixedly mounted on the top inner wall of the mounting ring 4. The mounting part 2 consists of a mounting disc 7 and a drive base 13. A motor 16 is fixedly embedded in the bottom of the drive base 13. One end of the output shaft of the motor 16 rotates through the top of the drive base 13 and is fixedly connected to a connecting shaft 17. The connecting shaft 17 is fixedly connected to the inner wall of the retaining tube 6. A circuit board 19 is disposed within the mounting part 2 and is electrically connected to the motor 16. The circuit board 19 is used to control the starting and stopping of the motor 16 and to adjust the speed of the motor 16.

[0037] To facilitate the installation and disassembly of the mounting disc 7 and the drive base 13, this embodiment also includes a locking assembly. The locking assembly includes a retaining ring 11 fixedly mounted on one side of the mounting disc 7. The drive base 13 slides against the inner wall of the retaining ring 11. Two retaining posts 14 are fixedly mounted on the outer wall of the drive base 13. Two L-shaped slots 12 are formed on the outer wall of the retaining ring 11, with one end of each L-shaped slot 12 penetrating the top of the retaining ring 11. Each retaining post 14 engages with one of the L-shaped slots 12. During installation, the drive base 13 is inserted into the retaining ring 11, ensuring the retaining posts 14 are engaged in the L-shaped slots 12. Then, the drive base 13 is rotated, causing the retaining posts 14 to slide along the L-shaped slots 12 to the bottom, thus completing the assembly of the mounting disc 7 and the drive base 13.

[0038] To facilitate the installation and disassembly of the mounting section 2 and the mounting bracket 3, this embodiment includes a fixing assembly. The fixing assembly includes a first mounting plate 8 and a second mounting plate 9 fixedly mounted on the outer wall of the mounting disc 7. The first mounting plate 8 and the second mounting plate 9 correspond to each other. A retaining plate 10 is fixedly mounted on one side of the first mounting plate 8, and a C-shaped retaining plate 34 is fixedly mounted on the top of the mounting bracket 3. A retaining groove is formed between the C-shaped retaining plate 34 and the mounting bracket 3, and the retaining plate 10 engages with the retaining groove. During installation, inserting the retaining plate 10 into the retaining groove completes the initial installation of the mounting section 2 and the mounting bracket 3.

[0039] To further improve the installation stability of the mounting part 2 and the mounting bracket 3, the fixing assembly also includes a groove 25 fixedly formed at the bottom of the second mounting plate 9. A fixing rod 26 is fixedly installed inside the groove 25, and an L-shaped locking block 28 is slidably fitted on the outer wall of the fixing rod 26. A sliding groove 27 is formed at the top of the second mounting plate 9, and one end of the L-shaped locking block 28 passes through the sliding groove 27 and is slidably connected to the inner wall of the sliding groove 27. A spring 29 is fitted on the outer wall of the fixing rod 26, and one end of the spring 29 is fixedly connected to one side of the L-shaped locking block 28, while the other end of the spring 29 is fixedly connected to one side of the inner wall of the groove 25. An L-shaped limiting groove 33 is formed at the top of the mounting bracket 3, and the L-shaped locking block 28 engages with the L-shaped limiting groove 33. During installation, slide the L-shaped locking block 28 along the slide groove 27 to the top of the L-shaped limiting groove 33, then pass one end of the L-shaped locking block 28 through the L-shaped limiting groove 33, and then release the L-shaped locking block 28. The elastic force of the spring 29 can make the L-shaped locking block 28 lock into the L-shaped limiting groove 33, thereby completing the fixed installation of the mounting part 2 and the mounting bracket 3.

[0040] Furthermore, this embodiment also includes a detection component. The detection component includes two acquisition boxes 20 fixedly mounted on the outer wall of the mounting disc 7. Each acquisition box 20 has an acquisition channel inside, and each acquisition box 20 has an air inlet 21 on the side near the fan body 1, both air inlets 21 being connected to adjacent acquisition channels. Two air outlets 22 are provided on the side of the mounting disc 7 near the mounting bracket 3, both air outlets 22 being connected to adjacent acquisition channels. A second temperature sensor 30 is fixedly embedded inside the mounting disc 7. The two detection probes of the second temperature sensor 30 penetrate one side of each of the two acquisition channels, used to detect the temperature of the air flowing through the two acquisition channels. A first temperature sensor 24 is fixedly embedded on the side of the mounting disc 7 near the mounting bracket 3, used to detect the temperature near the graphics card. A through hole 36 is provided at the top of the mounting bracket 3, which cooperates with the first temperature sensor 24. The first temperature sensor 24 and the second temperature sensor 30 are both electrically connected to the circuit board 19. The circuit board 19 adjusts the speed of the motor 16 according to the detected temperature to improve the heat dissipation effect. The first temperature sensor 24 and the second temperature sensor 30 are the same as those in the patent with publication number CN221829340U.

[0041] This application can be used in the field of cooling fan technology, or in other fields applicable to this application.

[0042] Example 2: Reference Figure 4 , 5 7. Improvement based on Example 1: a DC cooling fan for graphics cards, which is applied to the field of cooling fan technology;

[0043] To provide power to the fan as a whole, this embodiment also includes a corresponding power supply structure. Specifically, multiple first electrode plates 23 are fixedly mounted on the bottom of the first mounting plate 8, and all of the first electrode plates 23 are electrically connected to the circuit board 19. Multiple second electrode plates 35 are fixedly mounted on the top of the mounting bracket 3, and all of the second electrode plates 35 are electrically connected to the graphics card body. The multiple first electrode plates 23 correspond to and are in close contact with the multiple second electrode plates 35, thus providing power to the fan as a whole.

[0044] Furthermore, in this embodiment, the top of the mounting disk 7 is provided with a mounting groove 18, which passes through the drive seat 13. The circuit board 19 is fixedly installed in the mounting groove 18, which makes the installation of the circuit board 19 more stable.

[0045] In this embodiment, a plurality of protrusions 15 are fixedly installed on the outer wall of the drive seat 13. The plurality of protrusions 15 are located above the fixed post 14 and the fixed ring 11, which are used to increase the friction when in contact with the outer wall of the drive seat 13, making it convenient for the user to rotate the drive seat 13 and improving the ease of installation and disassembly of the drive seat 13.

[0046] In this embodiment, the card plate 10 has a certain degree of toughness, which can undergo partial deformation while ensuring the locking effect, so as to facilitate the better installation of the card plate 10 into the card slot.

[0047] In this embodiment, a rubber abutment strip is fixedly installed on the top of the mounting bracket 3, which abuts against one end of the second mounting plate 9, ensuring that the mounting part 2 will not move horizontally after being installed with the mounting bracket 3.

[0048] However, as is well known to those skilled in the art, the working principle and wiring method of the first electrode plate 23 and the second electrode plate 35 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0049] The working principle and usage process of this technical solution are as follows: In use, the user first uses the fixing plate 31 and mounting holes 32 to install the mounting bracket 3 in the pre-set fan slot of the graphics card. The mounting bracket 3 provides fixation and support for the installation of the cooling fan. When installing the cooling fan, the user only needs to insert the card plate 10 into the slot formed by the C-shaped card plate 34 and the mounting bracket 3. Then, by moving the exposed part of the L-shaped card block 28 away from the mounting disc 7 by pushing it from the top of the second mounting plate 9, one end of the L-shaped card block 28 can pass through the L-shaped limiting groove 33. Next, ensure that the mounting part 2 and the mounting bracket 3 remain tightly attached, and then stop moving the L-shaped card block. When the L-shaped locking block 28 is moved, under the action of the spring 29, the protruding part of the L-shaped locking block 28 can be engaged with the recessed part of the L-shaped limiting groove 33, completing the connection between the mounting part 2 and the mounting bracket 3. When it is necessary to disassemble the cooling fan, simply move the L-shaped locking block 28 and then reverse the above operation to quickly disassemble the cooling fan. After the cooling fan is installed, the first electrode plate 23 can be tightly attached to the second electrode plate 35, which can ensure the stable power supply of the cooling fan and facilitate its normal operation. When the user needs to disassemble and maintain the cooling fan, the user needs to first ensure that the fan body 1 and the mounting part 2 are completely separated, and then the user only needs to hold the drive firmly. The drive seat 13 is rotated to move the fixing post 14 to the bent part of the L-shaped slot 12. Then, the drive seat 13 is lifted upwards to separate it from the mounting disc 7, facilitating maintenance of internal components. Similarly, during installation, it is only necessary to ensure that the drive seat 13 is inserted into the fixing ring 11 and that the two fixing posts 14 are also engaged in the corresponding L-shaped slots 12. Finally, the drive seat 13 is rotated to secure it in the L-shaped slots 12. When the cooling fan is in use, the fan body 1 continuously blows air into the graphics card to ensure that the heat inside the graphics card is fully dissipated. When the fan body 1 blows air... Some of the flowing air can enter the collection channel inside the collection box 20 through the air inlet 21, and then be discharged from the air outlet 22. At this time, the second temperature sensor 30 can detect the temperature of the air flowing through the collection channel to record the temperature of the ambient air about to enter the graphics card. Meanwhile, the first temperature sensor 24 is set on one side of the mounting disk 7, and its detection end is continuously pointed to the inside of the graphics card. It can continuously detect the temperature near the graphics card and determine whether the corresponding temperature value is within the preset range. Based on this, the speed of the fan body 1 can be reasonably adjusted. The system for adjusting the fan speed is existing technology and will not be described in detail again.

[0050] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A DC cooling fan for graphics cards, characterized in that, include: The fan body (1) and the mounting part (2) are composed of a mounting ring (4) and multiple fan blades (5). The multiple fan blades (5) are fixedly installed on the outer wall of the mounting ring (4) and evenly arranged. A retaining tube (6) is fixedly installed on the top inner wall of the mounting ring (4). The mounting part (2) is composed of a mounting disc (7) and a drive seat (13). A motor (16) is fixedly embedded in the bottom of the drive seat (13). One end of the output shaft of the motor (16) rotates through the top of the drive seat (13) and is fixedly connected to a connecting shaft (17). The connecting shaft (17) is fixedly connected to the inner wall of the retaining tube (6). It also includes a circuit board (19), which is disposed in the mounting part (2) and is electrically connected to the motor (16); It also includes a locking assembly for installing and removing the mounting disc (7) and the drive seat (13); It also includes a mounting bracket (3), which is used to fix the mounting part (2); both ends of the mounting bracket (3) are fixedly mounted with fixing plates (31), and the interior of the two fixing plates (31) is provided with multiple mounting holes (32), which are matched with fixing screws to fix the mounting bracket (3) in the fan slot of the graphics card shell; It also includes a fixing component, which is used to install and remove the mounting part (2) and the mounting bracket (3); It also includes a detection component, which is used to detect the ambient air intake temperature and the surface temperature of the graphics card; The engagement assembly includes a fixing ring (11) fixedly installed on one side of the mounting disc (7), the drive seat (13) slidingly engaging with the inner wall of the fixing ring (11), two fixing posts (14) fixedly installed on the outer wall of the drive seat (13), and two L-shaped slots (12) opened on the outer wall of the fixing ring (11). One end of each of the two L-shaped slots (12) passes through the top of the fixing ring (11), and the two fixing posts (14) engage with the two L-shaped slots (12) to complete the combined installation of the drive seat (13) and the mounting disc (7). The fixing assembly includes a first mounting plate (8) and a second mounting plate (9) fixedly installed on the outer wall of the mounting disc (7). The first mounting plate (8) and the second mounting plate (9) correspond to each other. A clamping plate (10) is fixedly installed on one side of the first mounting plate (8). A C-shaped clamping plate (34) is fixedly installed on the top of the mounting bracket (3). A groove is formed between the C-shaped clamping plate (34) and the mounting bracket (3). The clamping plate (10) cooperates with the groove. The fixing assembly also includes a groove (25) fixedly opened at the bottom of the second mounting plate (9), a fixing rod (26) is fixedly installed inside the groove (25), an L-shaped locking block (28) is slidably sleeved on the outer wall of the fixing rod (26), a sliding groove (27) is opened at the top of the second mounting plate (9), one end of the L-shaped locking block (28) passes through the sliding groove (27), and the L-shaped locking block (28) is slidably connected to the inner wall of the sliding groove (27), a spring (29) is sleeved on the outer wall of the fixing rod (26), one end of the spring (29) is fixedly connected to one side of the L-shaped locking block (28), and the other end of the spring (29) is fixedly connected to one side of the inner wall of the groove (25), an L-shaped limiting groove (33) is opened at the top of the mounting bracket (3), and the L-shaped locking block (28) and the L-shaped limiting groove (33) are engaged and cooperated. The detection assembly includes two acquisition boxes (20) fixedly installed on the outer wall of the mounting disc (7). Each acquisition box (20) has an acquisition channel inside. Each acquisition box (20) has an air inlet (21) on the side near the fan body (1), and both air inlets (21) are connected to adjacent acquisition channels. The mounting disc (7) has two air outlets (22) on the side near the mounting bracket (3), and both air outlets (22) are connected to adjacent acquisition channels. A second temperature sensor (30) is fixedly embedded inside the mounting disc (7). The two detection probes of the second temperature sensor (30) pass through one side of the two acquisition channels respectively, and are used to detect the temperature of the wind flowing through the two acquisition channels; the first temperature sensor (24) is fixedly embedded on the side of the mounting disk (7) near the mounting bracket (3), and the first temperature sensor (24) is used to detect the temperature near the graphics card; the top of the mounting bracket (3) is provided with a through hole (36), and the through hole (36) cooperates with the first temperature sensor (24); the first temperature sensor (24) and the second temperature sensor (30) are both electrically connected to the circuit board (19).

2. The graphics card DC cooling fan according to claim 1, characterized in that, The bottom of the first mounting plate (8) is fixedly mounted with a plurality of first electrode plates (23), and the plurality of first electrode plates (23) are electrically connected to the circuit board (19). The top of the mounting bracket (3) is fixedly mounted with a plurality of second electrode plates (35), and the plurality of second electrode plates (35) are electrically connected to the graphics card body. The plurality of first electrode plates (23) correspond to the plurality of second electrode plates (35) and are in close contact with each other, for the purpose of powering the fan as a whole.

3. The graphics card DC cooling fan according to claim 1, characterized in that, The top of the mounting disc (7) is provided with a mounting groove (18), which passes through the drive seat (13), and the circuit board (19) is fixedly installed in the mounting groove (18).

4. The graphics card DC cooling fan according to claim 1, characterized in that, Multiple protrusions (15) are fixedly installed on the outer wall of the drive seat (13). The multiple protrusions (15) are located above the fixed post (14) and the fixed ring (11) to increase the friction force when in contact with the outer wall of the drive seat (13).

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