Direct-current cooling fan for display card

Abstract

The invention belongs to the technical field of cooling fans, particularly relates to a direct-current cooling fan for a graphics card, and aims to solve the problems that the conventional cooling fan is complicated to disassemble and assemble, unstable to fix and easy to loosen; in order to solve the problems that in the prior art, temperature monitoring is lacked, and the rotating speed of the fan is inconvenient to adjust reasonably, according to the scheme, the fan comprises a fan body and a mounting part, the fan body is composed of a mounting ring and a plurality of fan blades, the multiple fan blades are fixedly mounted on the outer wall of the mounting ring and are evenly arranged, and a clamping pipe is fixedly mounted on the inner wall of the top of the mounting ring; the mounting part is composed of a mounting disc and a driving seat, and according to the direct-current cooling fan for the graphics card, the mounting and dismounting processes of the fan are greatly simplified through the innovative design of the clamping assembly; meanwhile, by means of ingenious application of the fixing assembly, the stability of the fan on the support is guaranteed, and the heat dissipation stability is guaranteed; due to the real-time monitoring and intelligent adjusting functions of the detection assembly, the heat dissipation effect is ensured, and noise and energy consumption are effectively reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation fans, and in particular to a DC heat dissipation fan for a graphics card. Background Art

[0002] With the rapid development of computer technology, graphics cards, as important graphics processing components in computers, have continuously improved their performance, while power consumption and heat generation have also increased. In order to ensure the stable operation of graphics cards, effective heat dissipation measures have become particularly important. Traditional graphics card heat dissipation methods mainly rely on heat sinks, heat pipes and cooling fans to complete heat dissipation. Among them, the performance of the cooling fan is related to whether the air can circulate quickly. However, the existing graphics card cooling fans still have the following problems in use:

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

[0004] In view of the above problems, the present invention document proposes a DC cooling fan for a graphics card. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art that traditional cooling fans are cumbersome to disassemble and assemble, unstable and easy to loosen; lack of temperature monitoring, and inconvenience in reasonably adjusting the fan speed, and thus a graphics card DC cooling fan is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] Graphics card DC cooling fan, including:

[0008] A fan body and a mounting portion, wherein the fan body is composed of a mounting ring and a plurality of fan blades, wherein the plurality of fan blades are fixedly mounted on the outer wall of the mounting ring and are evenly arranged, and a clamping tube is fixedly mounted on the top inner wall of the mounting ring; the mounting portion is composed of a mounting disc and a driving seat, wherein a motor is fixedly embedded at the bottom of the driving seat, wherein one end of the output shaft of the motor rotates through the top of the driving seat and is fixedly connected to a connecting shaft, and the connecting shaft is fixedly connected to the inner wall of the clamping tube;

[0009] Also includes a circuit board, the circuit board is arranged in the mounting portion, and the circuit board is electrically connected to the motor;

[0010] It also includes a clamping assembly, which is used to complete the installation and removal of the mounting disc and the driving seat;

[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 the interiors of the two fixing plates are provided with a plurality of mounting holes, and the plurality of mounting holes are matched with fixing screws to fix the mounting bracket in the fan slot of the graphics card housing;

[0012] Also included is a fixing assembly, which is used to complete the installation and removal of the installation portion and the installation bracket;

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

[0014] In a possible design, the locking assembly includes a fixing ring fixedly mounted on one side of the mounting disc, the driving seat slidingly cooperates with the inner wall of the fixing ring, the outer wall of the driving seat is fixedly mounted with two fixing columns, the outer wall of the fixing ring is provided with two L-shaped slots, one end of each of the two L-shaped slots passes through the top of the fixing ring, and the two fixing columns cooperate with the two L-shaped slots to complete the combined installation of the driving seat and the mounting disc.

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

[0016] In one possible design, the fixing assembly also includes a groove fixedly opened at the bottom of the second mounting plate, a fixing rod is fixedly installed inside the groove, an outer wall sliding sleeve of the fixing rod is provided with an L-shaped block, a sliding groove is opened at the top of the second mounting plate, one end of the L-shaped block passes through the sliding groove, and the L-shaped block is slidably connected to the inner wall of the sliding groove, a spring is provided on the outer wall of the fixing rod, one end of the spring is fixedly connected to one side of the L-shaped block, and the other end of the spring is fixedly connected to one side inner wall of the groove, an L-shaped limit groove is opened at the top of the mounting bracket, and the L-shaped block engages with the L-shaped limit groove.

[0017] In a possible design, the detection component includes two collection boxes fixedly mounted on the outer wall of the mounting disk, the two collection boxes are each provided with a collection channel inside, the two collection boxes are each provided with an air inlet on a side close to the fan body, the two air inlets are both communicated with adjacent collection channels, the mounting disk is provided with two air outlets on a side close to the mounting bracket, the two air outlets are both communicated with adjacent collection channels, a second temperature sensor is fixedly embedded in the mounting disk, two detection probes of the second temperature sensor respectively penetrate one side of the two collection channels, and are used to detect the temperature of the wind flowing through the two collection channels; a first temperature sensor is fixedly embedded on a side of the mounting disk close to the mounting bracket, the first temperature sensor is used to detect the temperature near the graphics card, a through hole is provided on the top of the mounting bracket, the through hole cooperates with the first temperature sensor; the first temperature sensor and the second temperature sensor are both electrically connected to the circuit board.

[0018] In a possible design, a plurality of first electrode sheets are fixedly mounted on the bottom of the first mounting plate, and the plurality of first electrode sheets are electrically connected to the circuit board. A plurality of second electrode sheets are fixedly mounted on the top of the mounting bracket, and the plurality of second electrode sheets are electrically connected to the graphics card body. The plurality of first electrode sheets correspond to the plurality of second electrode sheets and are closely attached to each other, so as to complete the power supply to the entire fan.

[0019] In a possible design, a mounting groove is formed on the top of the mounting disc, the mounting groove passes through the driving seat, and the circuit board is fixedly mounted in the mounting groove.

[0020] In a possible design, a plurality of protrusions are fixedly mounted on the outer wall of the driving seat, and the plurality of protrusions are located above the fixing column and the fixing ring, so as to increase the friction force when contacting with the outer wall of the driving seat.

[0021] Beneficial effects: In the present invention, the graphics card DC cooling fan realizes the rapid installation and disassembly of the mounting disc and the driving seat by setting a snap-fit ​​assembly, simplifies the assembly and maintenance process of the fan, and improves the work efficiency. At the same time, the convex block arranged on the outer wall of the driving seat increases the friction force, which is convenient for users to disassemble and maintain the fan.

[0022] In the present invention, the graphics card DC cooling fan ensures the fan is firmly fixed on the mounting bracket by setting a fixing assembly, including a first mounting plate, a second mounting plate, a card plate, a C-shaped card plate, and an L-shaped card block, thereby avoiding the problem of loosening after long-term use and ensuring the stability of the cooling effect;

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

[0024] In the present invention, the graphics card DC cooling fan realizes electrical connection between the fan and the graphics card body by providing a first electrode sheet and a second electrode sheet, simplifies the power supply mode of the fan, and improves the stability and reliability of the power supply;

[0025] In the present invention, the graphics card DC cooling fan greatly simplifies the installation and disassembly process of the fan and improves work efficiency through the innovative snap-fit ​​component design; at the same time, the clever use of the fixing component ensures the stability of the fan on the bracket, and it can be used for a long time without loosening, thus ensuring the heat dissipation stability; the real-time monitoring and intelligent adjustment functions of the detection component not only ensure the heat dissipation effect, but also effectively reduce 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the three-dimensional structure of the DC cooling fan for a graphics card proposed by the present invention;

[0027] Figure 2 A schematic diagram of the three-dimensional structure of the DC cooling fan for a graphics card proposed by the present invention from another perspective;

[0028] Figure 3 This is a schematic diagram of the split structure of the DC cooling fan for a graphics card proposed by the present invention;

[0029] Figure 4 This is a schematic diagram of the disassembled structure of the installation part of the DC cooling fan for a graphics card proposed by the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of the fixing assembly of the DC cooling fan of a graphics card proposed by the present invention;

[0031] Figure 6 This is a schematic cross-sectional view of the mounting disc of the graphics card DC cooling fan proposed by the present invention;

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

[0033] In the figure: 1. fan body; 2. mounting part; 3. mounting bracket; 4. mounting ring; 5. fan blade; 6. clamping tube; 7. mounting disc; 8. first mounting plate; 9. second mounting plate; 10. clamping plate; 11. fixing ring; 12. L-shaped clamping groove; 13. driving seat; 14. fixing column; 15. bump; 16. motor; 17. connecting shaft; 18. mounting groove; 19. circuit board; 20. collection box; 21. air inlet; 22. air outlet; 23. first electrode sheet; 24. first temperature sensor; 25. groove; 26. fixing rod; 27. slide groove; 28. L-shaped clamping block; 29. ​​spring; 30. second temperature sensor; 31. fixing plate; 32. mounting hole; 33. L-shaped limit groove; 34. C-shaped clamping plate; 35. second electrode sheet; 36. through hole. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Example 1: Reference Figure 1-7 A heat dissipation fan comprises: a fan body 1, a mounting portion 2 and a mounting bracket 3.

[0036] The fan body 1 is composed of a mounting ring 4 and a plurality of blades 5. The plurality of blades 5 are fixedly mounted on the outer wall of the mounting ring 4 and are evenly arranged. A clamping tube 6 is fixedly mounted on the top inner wall of the mounting ring 4. The mounting portion 2 is composed of a mounting disc 7 and a driving seat 13. A motor 16 is fixedly embedded at the bottom of the driving seat 13. One end of the output shaft of the motor 16 rotates through the top of the driving seat 13 and is fixedly connected to a connecting shaft 17. The connecting shaft 17 is fixedly connected to the inner wall of the clamping tube 6. A circuit board 19 is disposed in the mounting portion 2. The circuit board 19 is electrically connected to the motor 16 and is used to control the start and stop of the motor 16 and adjust the speed of the motor 16.

[0037] In order to complete the installation and removal of the mounting disc 7 and the drive seat 13, a snap-fit ​​assembly is also provided in this embodiment. The snap-fit ​​assembly includes a fixing ring 11 fixedly mounted on one side of the mounting disc 7, the drive seat 13 slidingly cooperates with the inner wall of the fixing ring 11, two fixing columns 14 are fixedly mounted on the outer wall of the drive seat 13, and two L-shaped slots 12 are provided on the outer wall of the fixing ring 11, one end of the two L-shaped slots 12 both penetrate the top of the fixing ring 11, and the two fixing columns 14 both cooperate with the two L-shaped slots 12. During installation, the drive seat 13 is inserted into the fixing ring 11 to ensure that the fixing columns 14 are inserted into the L-shaped slots 12, and then the drive seat 13 is rotated to make the fixing columns 14 slide along the L-shaped slots 12 to the bottom of the L-shaped slots 12, thereby completing the combined installation of the mounting disc 7 and the drive seat 13.

[0038] In order to complete the installation and removal of the mounting portion 2 and the mounting bracket 3, a fixing assembly is provided in this embodiment. 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 clamping plate 10 is fixedly mounted on one side of the first mounting plate 8, a C-shaped clamping plate 34 is fixedly mounted on the top of the mounting bracket 3, a clamping groove is formed between the C-shaped clamping plate 34 and the mounting bracket 3, and the clamping plate 10 cooperates with the clamping groove. During installation, the clamping plate 10 is inserted into the clamping groove to complete the preliminary installation of the mounting portion 2 and the mounting bracket 3.

[0039] In order to further improve the installation stability of the mounting portion 2 and the mounting bracket 3, the fixing assembly further 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 block 28 is slidably sleeved on the outer wall of the fixing rod 26, a slide groove 27 is opened at the top of the second mounting plate 9, one end of the L-shaped block 28 passes through the slide groove 27, and the L-shaped block 28 is slidably connected to the inner wall of the slide 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 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 block 28 is engaged with the L-shaped limiting groove 33. During installation, slide the L-shaped block 28 along the slide groove 27 to the top of the L-shaped limit groove 33, then pass one end of the L-shaped block 28 through the L-shaped limit groove 33, and then release the L-shaped block 28. The elastic force of the spring 29 can make the L-shaped block 28 fit into the L-shaped limit groove 33, thereby completing the fixed installation of the mounting part 2 and the mounting bracket 3.

[0040] Furthermore, a detection component is also provided in this embodiment. The detection component includes two collection boxes 20 fixedly mounted on the outer wall of the mounting disc 7, and the two collection boxes 20 are provided with collection channels inside. The two collection boxes 20 are provided with air inlets 21 on the side close to the fan body 1, and the two air inlets 21 are connected to the adjacent collection channels. The mounting disc 7 is provided with two air outlets 22 on the side close to the mounting bracket 3, and the two air outlets 22 are connected to the adjacent collection channels. A second temperature sensor 30 is fixedly embedded inside the mounting disc 7, and two detection probes of the second temperature sensor 30 respectively penetrate one side of the two collection channels, and are used to detect the temperature of the wind flowing through the two collection channels. A first temperature sensor 24 is fixedly embedded on the side of the mounting disc 7 close to the mounting bracket 3, and the first temperature sensor 24 is used to detect the temperature near the graphics card. A through hole 36 is provided on the top of the mounting bracket 3, 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, and the circuit board 19 adjusts the rotation speed of the motor 16 according to the detected temperature to improve the heat dissipation effect; wherein, the first temperature sensor 24 and the second temperature sensor 30 are the same as those in the patent with announcement number CN221829340U.

[0041] The present application can be used in the field of heat dissipation fan technology, and can also be used in other fields applicable to the present application.

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

[0043] In order to complete the power supply to the fan as a whole, the present embodiment also provides a corresponding power supply structure. Specifically, a plurality of first electrode sheets 23 are fixedly mounted on the bottom of the first mounting plate 8, and the plurality of first electrode sheets 23 are electrically connected to the circuit board 19. A plurality of second electrode sheets 35 are fixedly mounted on the top of the mounting bracket 3, and the plurality of second electrode sheets 35 are electrically connected to the graphics card body. The plurality of first electrode sheets 23 correspond to the plurality of second electrode sheets 35 and are closely attached to each other, so as to complete the power supply to the fan as a whole.

[0044] Furthermore, in this embodiment, a mounting groove 18 is formed on the top of the mounting disc 7 , and the mounting groove 18 passes through the driving seat 13 . The circuit board 19 is fixedly mounted in the mounting groove 18 , so that the installation of the circuit board 19 can be more stable.

[0045] In this embodiment, a plurality of protrusions 15 are fixedly installed on the outer wall of the driving seat 13. The plurality of protrusions 15 are located above the fixing column 14 and the fixing ring 11, and are used to increase the friction force when contacting the outer wall of the driving seat 13, so as to facilitate the user to rotate the driving seat 13 and improve the convenience of installing and disassembling the driving seat 13.

[0046] In this embodiment, the card plate 10 has a certain toughness and can be partially deformed while ensuring the card engagement effect, so as to facilitate the card plate 10 to be better installed and inserted into the card slot.

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

[0048] However, as is well known to those skilled in the art, the working principles and wiring methods of ** devices and ** devices are commonplace, and are conventional means or common knowledge, and will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0049] The working principle and use process of the present technical solution are as follows: when in use, the user can first use the fixing plate 31 and the mounting hole 32 to install the mounting bracket 3 in the fan slot preset in the graphics card, and the mounting bracket 3 can provide 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 card slot formed by the C-shaped card plate 34 and the mounting bracket 3, and then move the exposed part of the L-shaped card block 28 on the top of the second mounting plate 9 to move it away from the mounting disc 7. At this time, one end of the L-shaped card block 28 can pass through the L-shaped limit groove 33, and then ensure that the mounting portion 2 and the mounting bracket 3 remain close to each other, and then stop the L-shaped card block. By moving the L-shaped clamp 28, under the action of the spring 29, the protruding part of the L-shaped clamp 28 can be inserted into the concave part of the L-shaped limiting groove 33, thereby completing the connection between the mounting portion 2 and the mounting bracket 3; when the cooling fan needs to be removed, it is only necessary to move the L-shaped clamp 28, and then perform the above operation in reverse, so as to quickly remove the cooling fan; after the cooling fan is installed, the first electrode sheet 23 can just be in close contact with the second electrode sheet 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 portion 2 are completely separated, and then the user only needs to hold the driver tightly, and then the cooling fan body 1 can be removed. The driving seat 13 is moved and rotated to move the fixing column 14 to the bent part of the L-shaped slot 12, and then the driving seat 13 is lifted up with force. At this time, the driving seat 13 and the mounting disc 7 can be separated, which is convenient for the maintenance of the internal parts. Similarly, during installation, it is only necessary to ensure that the driving seat 13 is inserted into the fixing ring 11, and the two fixing columns 14 are also inserted into the corresponding L-shaped slots 12. Finally, the driving seat 13 is rotated to clamp it in the L-shaped slot 12. When the cooling fan is in use, the fan body 1 can continuously blow air into the inside of the graphics card to ensure that the heat inside the graphics card can be fully discharged. When the fan body 1 is blowing, , part of the flowing wind 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 wind flowing through the collection channel to record the temperature of the external ambient wind that is about to enter the graphics card; at the same time, the first temperature sensor 24 is arranged on one side of the mounting disk 7, and its detection end continuously points to the inside of the graphics card, and can continuously detect the temperature near the graphics card, and then determine whether the corresponding temperature value is within the preset range, and use this to reasonably adjust the rotation speed of the fan body 1. The system for adjusting the fan speed is a prior art and will not be repeated again.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Graphics card DC cooling fan, characterized in that: include: A fan body (1) and a mounting portion (2), wherein the fan body (1) is composed of a mounting ring (4) and a plurality of fan blades (5), wherein the plurality of fan blades (5) are fixedly mounted on the outer wall of the mounting ring (4) and are evenly arranged, and a clamping tube (6) is fixedly mounted on the top inner wall of the mounting ring (4); the mounting portion (2) is composed of a mounting disc (7) and a driving seat (13), wherein a motor (16) is fixedly embedded at the bottom of the driving seat (13), and one end of the output shaft of the motor (16) rotates through the top of the driving seat (13) and is fixedly connected to a connecting shaft (17), and the connecting shaft (17) is fixedly connected to the inner wall of the clamping tube (6); It also includes a circuit board (19), wherein the circuit board (19) is arranged in the mounting portion (2), and the circuit board (19) is electrically connected to the motor (16); It also includes a snap-fit ​​assembly, which is used to complete the installation and removal of the installation disc (7) and the drive seat (13); It also includes a mounting bracket (3), the mounting bracket (3) being used to fix the mounting portion (2); fixing plates (31) are fixedly mounted on both ends of the mounting bracket (3), a plurality of mounting holes (32) are provided inside the two fixing plates (31), and the plurality of mounting holes (32) are matched with fixing screws to fix the mounting bracket (3) in the fan slot of the graphics card housing; It also includes a fixing assembly, which is used to complete the installation and removal of the installation part (2) and the installation bracket (3); It also includes a detection component, which is used to detect the external air inlet temperature and the surface temperature of the graphics card.

2. The graphics card DC cooling fan according to claim 1, characterized in that: The engaging assembly comprises a fixing ring (11) fixedly mounted on one side of the mounting disc (7); the driving seat (13) is slidably matched with the inner wall of the fixing ring (11); two fixing columns (14) are fixedly mounted on the outer wall of the driving seat (13); the outer wall of the fixing ring (11) is provided with two L-shaped slots (12); one end of the two L-shaped slots (12) passes through the top of the fixing ring (11); the two fixing columns (14) are matched with the two L-shaped slots (12) to complete the combined installation of the driving seat (13) and the mounting disc (7).

3. The graphics card DC cooling fan according to claim 1, characterized in that: The fixing assembly comprises 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 clamping plate (10) is fixedly mounted on one side of the first mounting plate (8); a C-shaped clamping plate (34) is fixedly mounted on the top of the mounting bracket (3); a clamping groove is formed between the C-shaped clamping plate (34) and the mounting bracket (3); and the clamping plate (10) cooperates with the clamping groove.

4. The graphics card DC cooling fan according to claim 1, characterized in that: 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 outer wall of the fixing rod (26) is slidingly sleeved with an L-shaped block (28), a sliding groove (27) is opened at the top of the second mounting plate (9), one end of the L-shaped block (28) passes through the sliding groove (27), and the L-shaped block (28) is slidably connected to the inner wall of the sliding groove (27), the outer wall of the fixing rod (26) is sleeved with a spring (29), one end of the spring (29) is fixedly connected to one side of the L-shaped block (28), and the other end of the spring (29) is fixedly connected to the inner wall of one side of the groove (25), and an L-shaped limiting groove (33) is opened at the top of the mounting bracket (3), and the L-shaped block (28) is engaged with the L-shaped limiting groove (33).

5. The graphics card DC cooling fan according to claim 1, characterized in that: The detection assembly comprises two collection boxes (20) fixedly mounted on the outer wall of the mounting disc (7), the two collection boxes (20) are provided with collection channels inside, the two collection boxes (20) are provided with air inlets (21) on one side close to the fan body (1), the two air inlets (21) are communicated with adjacent collection channels, the mounting disc (7) is provided with two air outlets (22) on one side close to the mounting bracket (3), the two air outlets (22) are communicated with adjacent collection channels, the mounting disc (7) is fixedly embedded with a second temperature sensor (30), the The two detection probes of the second temperature sensor (30) respectively penetrate one side of the two collection channels, and are used to detect the temperature of the wind flowing through the two collection channels; the first temperature sensor (24) is fixedly embedded on the side of the mounting disc (7) close to 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).

6. The graphics card DC cooling fan according to claim 3, characterized in that: A plurality of first electrode sheets (23) are fixedly mounted on the bottom of the first mounting plate (8), and the plurality of first electrode sheets (23) are electrically connected to the circuit board (19); a plurality of second electrode sheets (35) are fixedly mounted on the top of the mounting bracket (3), and the plurality of second electrode sheets (35) are electrically connected to the graphics card body; the plurality of first electrode sheets (23) correspond to the plurality of second electrode sheets (35) and are in close contact with each other, so as to complete the power supply to the entire fan.

7. 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), the mounting groove (18) passes through the driving seat (13), and the circuit board (19) is fixedly mounted in the mounting groove (18).

8. The graphics card DC cooling fan according to claim 1, characterized in that: The outer wall of the drive seat (13) is fixedly mounted with a plurality of protrusions (15), which are located above the fixing column (14) and the fixing ring (11) and are used to increase the friction force when contacting the outer wall of the drive seat (13).

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