Quick-release computer cooling fan

Abstract

The utility model discloses a quick-release type computer cooling fan which comprises a fixing frame and a fan module, an opening is formed in the fixing frame, a through thread screw and a screw are arranged in the opening, and the fixing frame is fixed to a cooling opening of a case through cooperation of the through thread screw and the screw; a first-stage magnetic block is arranged at the end, away from the screw, of the through-thread screw, a second-stage magnetic block corresponding to the first-stage magnetic block is arranged on the fan module, and the first-stage magnetic block and the second-stage magnetic block attract each other. The holes, the first-stage magnetic blocks, the second-stage magnetic blocks, the through-thread screws and the screws are combined into a quick release unit, and the fan module is fixed by the quick release unit; a driving mechanism used for rotating the fan blades is arranged in each fan module, a plug and a jack matched with the plug are arranged on the two sides of each fan module respectively, and when the plugs and the jacks between the adjacent fan modules are electrically connected, power can be supplied to the driving mechanisms. According to the technical scheme, the cooling fan can be rapidly disassembled and assembled, the adjacent fan modules are allowed to be electrically connected, and the beneficial effect of dynamic speed regulation is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation devices, and particularly relates to a quick-disassembly computer cooling fan. Background Art

[0002] A computer cooling fan is an indispensable component in computer hardware, mainly responsible for dissipating the heat generated by the processor, graphics card and other key hardware during operation. By accelerating air flow, the cooling fan can effectively reduce the device temperature, prevent performance degradation or damage caused by overheating, and thus ensure the stability of the computer system and the long-term reliability of the hardware. The design and performance of the cooling fan directly affect the efficiency of the entire heat dissipation system and are an important part of computer hardware design.

[0003] Although the existing quick-disassembly cooling fans provide a certain degree of convenience and users can quickly replace or clean the fans, there are still some limitations in practical applications: for example, some quick-disassembly mechanisms require users to manually tighten or loosen screws, increasing the maintenance difficulty and resulting in insecure installation. In addition, the existing designs often lack modularity and are difficult to adapt to different users' different requirements for heat dissipation capabilities. More importantly, the rotation speeds of most fans are fixed and cannot be dynamically adjusted according to the actual heat dissipation requirements, limiting the maximization of heat dissipation efficiency. Moreover, when existing fans are used in combination, they often cannot achieve effective electrical connection and collaborative work, and cannot improve the heat dissipation performance by increasing the number of fans. In some quick-disassembly fans, due to the lack of effective shock absorption design, the fans may generate large vibrations and noises during rapid rotation, affecting the user experience.

[0004] The above limitations highlight the need for a new type of quick-disassembly cooling fan. Summary of the Utility Model

[0005] The purpose of the utility model is to solve or alleviate the above problems and propose a quick-disassembly computer cooling fan.

[0006] The utility model is realized by the following technical solutions:

[0007] A quick-release computer cooling fan, comprising a fixing frame and a plurality of fan modules. An opening is provided on the fixing frame, and a through-threaded screw and a screw are arranged in the opening. The cooperation of the through-threaded screw and the screw fixes the fixing frame at the heat dissipation opening of the chassis. One end of the through-threaded screw away from the screw is provided with a first-level magnet block, and a second-level magnet block corresponding to the first-level magnet block is arranged on the fan module. The first-level magnet block and the second-level magnet block attract each other to fix the fan module on the fixing frame. The opening, the first-level magnet block, the second-level magnet block, the through-threaded screw and the screw are combined into a quick-release unit, and a plurality of quick-release units are arranged on the fixing frame to jointly fix the fan module. A driving mechanism for rotating the fan blades is arranged inside each fan module. A plug and a jack matching the plug are respectively arranged on both sides of each fan module. When the plugs and jacks between adjacent fan modules are electrically connected, power supply to the driving mechanism can be realized to drive the fan blades to rotate.

[0008] The technical solution of the quick-release computer cooling fan proposed by the solution of the present utility model, compared with the prior art, adopts an innovative magnetic adsorption fixing mechanism. Through the mutual attraction of the first-level magnet block on the fixing frame and the second-level magnet block on the fan module, the quick disassembly and assembly of the fan module are realized, greatly simplifying the installation process and reducing the maintenance difficulty. Secondly, a plurality of quick-release units on the fixing frame provide uniform support and stable fixation, enhancing the stability of the fan module in the chassis and reducing displacement caused by vibration or wind force. In addition, the plug and jack design on both sides of the fan module not only realizes the electrical connection between the fans, allows multiple fan modules to share power, but also improves the expandability and flexibility of the cooling system through series or parallel connection between the modules. It enables users to increase or decrease the number of fans according to the heat dissipation requirements to achieve dynamic adjustment of the heat dissipation efficiency. At the same time, the modular design is also convenient for future upgrades and maintenance.

[0009] Preferably, there are 2 plugs and jacks respectively on each fan module, and the plugs and jacks are located on opposite sides of the fan module. When the plug of one fan module is inserted into the jack of an adjacent fan module, not only physical connection is realized, but also power sharing is achieved through electrical connection.

[0010] Preferably, 4 quick-release units are connected between each fan module and the fixing frame. It ensures uniform force and stable fixation of the fan module on the fixing frame.

[0011] Preferably, a limiting cylinder is provided on the fixing frame, and the through-threaded screw is arranged inside the limiting cylinder; a limiting groove matching the limiting cylinder is provided on the fan module, and the second-level magnet block is arranged on the inner wall of the limiting groove. The limiting cylinder is used to ensure the correct positioning and stable holding of the fan module. The through-threaded screw is arranged inside the limiting cylinder to provide fixation in the vertical direction.

[0012] Preferably, the driving mechanism includes a motor, a fan blade rotating shaft, and a speed regulating mechanism for adjusting the rotation speed of the fan blade; a stabilizing groove is provided below the inner wall of the fan module, and one end of the fan blade rotating shaft can rotate in the stabilizing groove, and the other end of the fan blade rotating shaft is connected to the fan blade.

[0013] Preferably, a shock-absorbing plate is provided in the jack, and a first-stage spring connecting the shock-absorbing plate to the inner wall of the jack is provided between one side of the shock-absorbing plate and the inner wall of the jack, and terminals are provided on the opposite side of the shock-absorbing plate. One side of the shock-absorbing plate is connected to the inner wall of the jack through the first-stage spring to form an elastic support; terminals are provided on the other side to be connected to the plug to achieve electrical connection.

[0014] Preferably, the speed regulating mechanism includes a bevel gear, a slow gear, and a fast gear. The bevel gear is provided on the motor shaft, and the slow gear and the fast gear are fixedly connected as a whole; both the slow gear and the fast gear are connected to the fan blade rotating shaft through a sliding connection mechanism. The sliding connection mechanism can allow the slow gear and the fast gear to slide on the fan blade rotating shaft and drive the fan blade rotating shaft to rotate under force; the slow gear and the fast gear are respectively matched with the bevel gear; the speed regulating mechanism further includes an L-shaped rod, a pushing ring, and a push rod. The L-shaped rod is provided inside the frame of the fan module, one end of which is connected to the shock-absorbing plate, and the other end is provided with a wedge surface; one end of the fast gear is connected to the slow gear, and the other end is movably connected with a pushing ring. A push rod is provided on the pushing ring. One end of the push rod is connected to the pushing ring, and the other end of the push rod contacts the wedge surface of the L-shaped rod; when the L-shaped rod moves under force and applies force to the push rod, the push rod moves the fast gear and the slow gear upward through the pushing ring. At this time, the bevel gear is matched with the fast gear, thereby changing the rotation speed of the fan blade. When used alone, the bevel gear meshes with the slow gear to provide stable low-speed rotation; when higher heat dissipation performance is required, through the action of the L-shaped rod, the fast gear meshes with the bevel gear to achieve high-speed rotation.

[0015] Preferably, the sliding connection mechanism includes a convex block provided on the fan blade rotating shaft and a groove provided on the inner wall of the slow gear, and the convex block and the groove match each other. The cooperation of the convex block and the groove realizes the positioning and fixation of the gear, and at the same time allows the gear to be finely adjusted along the axial direction of the rotating shaft.

[0016] Preferably, the limiting cylinder, the first-stage magnetic block, the second-stage magnetic block, and the limiting groove are all regular hexagons. This makes it more convenient to align and position each component during production and assembly.

[0017] Preferably, the gear ratio of the fast gear to the slow gear is 2:1. This enables the fan to respond quickly when enhanced heat dissipation performance is required.

[0018] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0019] 1. The quick-release computer cooling fan of the present utility model realizes the beneficial effect of quick disassembly and assembly through the through-threaded screws on the fixing bracket and the first-level magnetic blocks at both ends of the screws, as well as the second-level magnetic blocks on the fan module, allowing users to easily fix or remove the fan module; the two jacks and plugs on each fan module are respectively located on opposite sides of the fan module, providing flexible connection directions and increasing the diversity of installation; four quick-release units are connected between each fan module and the fixing bracket, enhancing the stability of the fan module and ensuring balanced fixation in different directions; the design of the limiting cylinder and the limiting groove, in cooperation with the through-threaded screws and the second-level magnetic blocks, provides precise positioning and stable fixation.

[0020] 2. Plugs and jacks are designed on both sides of the fan module of the present utility model, allowing electrical connection between adjacent fan modules, and realizing the beneficial effects of modularization and expandability. Users can flexibly increase or decrease the number of fan modules according to the heat dissipation requirements without reconfiguring the power lines, improving the adaptability of the heat dissipation system and facilitating future upgrades and maintenance.

[0021] 3. The present utility model realizes the beneficial effect of dynamic speed regulation through the interaction of a speed regulation mechanism, including an umbrella-shaped gear, a slow gear, and a fast gear, as well as an L-shaped rod, a pushing ring, and a push rod. Users can switch the gear meshing state through physical operation according to the change of the system load, thereby adjusting the speed of the fan and optimizing the heat dissipation efficiency and noise level.

[0022] 4. A shock-absorbing plate is designed in the jack of the fan module of the present utility model. In cooperation with the first-level spring and the terminal, it not only plays a role in absorbing vibration but also serves as a conductive medium, realizing the effects of shock absorption and enhanced stability, reducing the vibration and noise generated when the fan rotates at high speed, while maintaining the stability of the electrical connection, improving the reliability and service life of the heat dissipation system. Description of the Drawings

[0023] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, form a part of this application, and do not constitute a limitation to the embodiments of the present utility model.

[0024] In the drawings:

[0025] Figure 1 It is a schematic diagram of the overall structure of the cooling fan and the fixing bracket of the present utility model;

[0026] Figure 2 It is a schematic diagram of the connection mode of the quick-release unit of the present utility model;

[0027] Figure 3 It is a schematic diagram of the connection mode of multiple fan modules of the present utility model;

[0028] Figure 4Schematic diagram of the fan module of the present utility model, aiming to show the position of the limiting groove;

[0029] Figure 5 Cross-sectional view of the fan module of the present utility model;

[0030] Figure 6 Schematic diagram of the connection mode of the fan blade rotating shaft, fast gear and slow gear of the present utility model;

[0031] Figure 7 is Figure 3 Enlarged view of part A of

[0032] Figure 8 is Figure 5 Enlarged view of part B of

[0033] Figure 9 is Figure 5 Enlarged view of part C of

[0034] Figure 10 Schematic diagram of the installation positions of the fan blade rotating shaft, push ring and fast gear of the present utility model.

[0035] What the reference signs represent are:

[0036] 1, fan module; 11, limiting groove; 12, secondary magnetic block; 13, plug; 14, jack; 141, shock-absorbing plate; 142, primary spring; 143, terminal; 2, fixing bracket; 21, through-threaded screw; 22, screw; 23, limiting cylinder; 24, primary magnetic block; 3, motor; 31, power cord; 32, motor rotating shaft; 33, umbrella-shaped gear; 4, L-shaped rod; 5, fan blade rotating shaft; 51, slow gear; 52, fast gear; 53, push ring; 531, protrusion; 54, secondary spring; 55, convex block; 6, push rod. Specific implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the described embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model. The illustrative embodiments and descriptions thereof of the present utility model are only used to explain the present utility model and are not intended to limit the present utility model. It should be noted that the present utility model has been in the actual R & D and use stage.

[0038] Unless otherwise defined, the technical terms or scientific terms used in this utility model shall have the ordinary meanings as understood by those of ordinary skill in the field to which this utility model pertains. The "first", "second" and similar terms used in this utility model do not denote any order, quantity or importance, but are only used to distinguish different components. Words such as "comprising" or "including" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects.

[0039] Existing computer cooling fans usually have limitations in design. For example, they often rely on screws or buckles, which not only increase the time for installation and disassembly, but also increase the complexity of operation, and users may feel inconvenient when maintaining or replacing the fans. In addition, existing fans lack a modular design and are difficult to expand or reduce quickly to adapt to different cooling requirements, which limits the flexibility and customizability of the cooling system. More importantly, the rotational speeds of most existing fans are fixed and cannot be dynamically adjusted according to the actual cooling load, which may lead to low efficiency at low loads or insufficient heat dissipation at high loads. Moreover, existing fans often cannot achieve effective electrical connection when used in combination, and cannot improve the cooling performance by increasing the number of fans, which limits the overall efficiency of the cooling system.

[0040] Embodiment 1:

[0041] Please refer to the attached Figure 1 - attached Figure 4 ., a quick-disassembly computer cooling fan, comprising a fixing frame 2 and a plurality of fan modules 1. The fixing frame 2 is provided with openings, and a through-threaded screw 21 and a screw 22 are arranged in the openings. The cooperation of the through-threaded screw 21 and the screw 22 fixes the fixing frame 2 at the chassis cooling port; a first-level magnet 24 is arranged at one end of the through-threaded screw 21 away from the screw 22, and a second-level magnet 12 corresponding to the first-level magnet 24 is arranged on the fan module 1. The first-level magnet 24 and the second-level magnet 12 attract each other to fix the fan module 1 on the fixing frame 2; the opening, the first-level magnet 24, the second-level magnet 12, the through-threaded screw 21 and the screw 22 are combined into a quick-disassembly unit, and a plurality of quick-disassembly units are arranged on the fixing frame 2 to jointly fix the fan module 1; a driving mechanism for rotating the fan blades is arranged inside each fan module 1, and a plug 13 and a jack 14 matching the plug 13 are respectively arranged on both sides of each fan module 1. When the plugs 13 and the jacks 14 between adjacent fan modules 1 are electrically connected, power supply to the driving mechanism can be realized to drive the fan blades to rotate.

[0042] To achieve quick disassembly, the other end of the through-thread screw 21 is equipped with a first-level magnetic block 24, and a second-level magnetic block 12 is correspondingly provided on the fan module 1. When the fan module 1 approaches the fixing bracket 2, due to the mutual attraction of the first-level magnetic block 24 and the second-level magnetic block 12, the fan module 1 can be quickly and firmly fixed on the fixing bracket 2.

[0043] It can be understood that the magnetic connection simplifies the installation process and allows users to easily replace or maintain the fan module 1; a driving mechanism is installed inside each fan module 1, including a motor 3 and a fan blade rotating shaft 5, to achieve the rotation of the fan blades. In addition, a plug 13 and a socket 14 are respectively provided on both sides of each fan module 1, and the plug 13 and the socket 14 are designed to be electrically connected, enabling adjacent fan modules 1 to share power, thereby driving the fan blades to rotate and realizing the heat dissipation function.

[0044] Please refer to the attached Figure 3 , it can be understood that the plug 13 and the socket 14 are internally designed with conductive terminals 143 or contact pieces, and the terminals 143 or contact pieces come into contact when the plug 13 is inserted into the socket 14, thus forming an electrical circuit; the electrical connection allows current to be transmitted from one fan module 1 to another. In this way, when one fan module 1 is connected to a power source, electrical energy can be transmitted to adjacent fan modules 1 through its plug 13; the fan modules 1 can be designed to achieve series or parallel electrical connections through the plug 13 and the socket 14. In a series configuration, the current passes through each fan module 1 in turn; in a parallel configuration, the current can flow to multiple fan modules 1 simultaneously.

[0045] The installation and disassembly of the cooling fan become fast and convenient. At the same time, the modular design allows users to flexibly adjust the number of fans according to the heat dissipation requirements, improving the adaptability of the heat dissipation system and the operation convenience of users.

[0046] There is a more preferred implementation in this embodiment. The number of sockets 14 and plugs 13 on each fan module 1 is 2 respectively, and the plug 13 and the socket 14 are located on opposite sides of the fan module 1.

[0047] As shown in the attached Figure 4 It should be noted that the above solution allows the fan module 1 to be connected to other fan modules 1 in multiple directions (generally, connected in a row), improving the flexibility and expandability of the heat dissipation system. Specifically, when the plug 13 of one fan module 1 is inserted into the socket 14 of an adjacent fan module 1, not only a physical connection is achieved, but also power sharing is realized through electrical connection. This design enables the fan modules 1 to be easily connected in series or parallel and configured according to the actual heat dissipation requirements and the chassis space. Alternative solutions may include using wireless connection technologies such as inductive charging or wireless power transmission to eliminate the need for physical plugs 13 and sockets 14. In addition, a standardized connector design can also be considered to improve the compatibility with other heat dissipation systems.

[0048] In this embodiment, there is an even more preferred implementation. Four quick-release units are connected between each fan module 1 and the fixing frame 2.

[0049] It can be understood that the four quick-release units are distributed at the four corners of the fan module 1, ensuring uniform force and stable fixation of the fan module 1 on the fixing frame 2, which helps to resist any uneven vibration or eccentric force generated by the rotation of the fan; each quick-release unit includes a through-threaded screw 21 and a screw 22 that cooperates with it, and a primary magnetic block 24 located at one end of the through-threaded screw 21; a secondary magnetic block 12 is provided at the corresponding position of the fan module 1, enabling the fan module 1 to be quickly connected to and separated from the fixing frame 2 while maintaining the firmness of the connection.

[0050] The working principle of the quick-release unit is based on the magnetic attraction principle and mechanical locking. When the fan module 1 approaches the fixing frame 2, the magnetic force between the primary magnetic block 24 and the secondary magnetic block 12 attracts the fan module 1 and achieves preliminary fixation. Subsequently, by tightening the screw 22, the through-threaded screw 21 further firmly locks the fan module 1 on the fixing frame 2.

[0051] In this embodiment, there is an even more preferred implementation. A limiting cylinder 23 is provided on the fixing frame 2, and the through-threaded screw 21 is arranged inside the limiting cylinder 23; a limiting groove 11 matching the limiting cylinder 23 is provided on the fan module 1, and the secondary magnetic block 12 is arranged on the inner wall of the limiting groove 11.

[0052] In this embodiment, the limiting cylinder 23 is used to ensure the correct positioning and stability of the fan module 1. The through-threaded screw 21 is arranged inside the limiting cylinder 23 to provide fixation in the vertical direction; a limiting groove 11 matching the limiting cylinder 23 is provided on the fan module 1, and the secondary magnetic block 12 is installed on the inner wall of the limiting groove 11; the combined use of the limiting cylinder 23 and the limiting groove 11 ensures the precise position of the fan module 1 on the fixing frame 2, and moreover, the internal space of the limiting cylinder 23 provides a protected environment for the through-threaded screw 21 to prevent the screw from loosening or being affected by external forces.

[0053] It can be understood that the edge of the limiting cylinder 23 can be designed with a chamfer or a smooth shape to reduce the risk of damage during installation. Alternative solutions include using different fixing mechanisms, such as snap fasteners or spring clips, to adapt to fan modules 1 of different shapes or sizes. In addition, an adjustable limiting structure can be considered to adapt to chassis of different thicknesses.

[0054] As shown in the appendix Figure 5 In this embodiment, there is an even more preferred implementation. The drive mechanism includes a motor 3, a fan blade rotating shaft 5, and a speed regulation mechanism for adjusting the rotational speed of the fan blade; a stable groove is provided below the inner wall of the fan module 1, and one end of the fan blade rotating shaft 5 can rotate in the stable groove, and the other end of the fan blade rotating shaft 5 is connected to the fan blade.

[0055] In this solution, the drive mechanism includes a motor 3, a fan blade rotating shaft 5, and a speed regulating mechanism. The motor 3 is fixed within the frame of the fan module 1. One end of the fan blade rotating shaft 5 is located within the stable groove and can rotate freely within the groove without being affected by external forces. The other end is connected to a fan blade. The design of the stable groove ensures the stability of the rotating shaft and reduces wear caused by vibration or eccentricity. The function of the speed regulating mechanism is to adjust the rotational speed of the fan blade.

[0056] In a more preferred implementation of this embodiment, a shock-absorbing plate 141 is provided within the jack 14. A primary spring 142 connecting the two is provided between one side of the shock-absorbing plate 141 and the inner wall of the jack 14. A terminal 143 is provided on the opposite side of the shock-absorbing plate 141.

[0057] As shown Figure 8 In this embodiment, as shown, a shock-absorbing plate 141 is designed within the jack 14. The shock-absorbing plate 141 not only serves to absorb vibrations, but also has electrical conductivity due to its metallic material and can supply power to the motor 3. One side of the shock-absorbing plate 141 is connected to the inner wall of the jack 14 through a primary spring 142 to form an elastic support. A terminal 143 is provided on the other side and is connected to the plug 13 to achieve electrical connection. The elasticity of the spring ensures the contact force between the plug 13 and the terminal 143, maintaining good electrical connection even in a vibrating environment.

[0058] It can be understood that the design of the shock-absorbing plate 141 provides a dual function: on the one hand, it absorbs vibrations, protecting the electrical connection and the fan module 1; on the other hand, as an electrical conduction path, it simplifies the electrical wiring. Alternative solutions include using other electrically conductive materials as the medium for shock absorption and power supply, or using a multi-layer shock-absorbing structure or a liquid damper.

[0059] As shown Figure 9As shown in the figure, there is a more preferred implementation in this embodiment. The speed regulation mechanism includes a bevel gear 33, a slow gear 51 and a fast gear 52. The bevel gear 33 is arranged on the motor shaft 32. The slow gear 51 and the fast gear 52 are fixedly connected as a whole. Both the slow gear 51 and the fast gear 52 are connected to the fan shaft 5 through a sliding connection mechanism. The sliding connection mechanism can make the slow gear 51 and the fast gear 52 slide on the fan shaft 5 and drive the fan shaft 5 to rotate under force. The slow gear 51 and the fast gear 52 respectively match the bevel gear 33. The speed regulation mechanism further includes an L-shaped rod 4, a pushing ring 53 and a push rod 6. The L-shaped rod 4 is arranged inside the frame of the fan module 1. One end of it is connected to the shock-absorbing plate 141, and the other end is provided with a wedge surface. One end of the fast gear 52 is connected to the slow gear 51, and the other end is movably connected with a pushing ring 53. A push rod 6 is arranged on the pushing ring 53. One end of the push rod 6 is connected to the pushing ring 53, and the other end of the push rod 6 contacts the wedge surface of the L-shaped rod 4. When the L-shaped rod 4 moves under force and applies force to the push rod 6, the push rod 6 moves the fast gear 52 and the slow gear 51 upward through the pushing ring 53. At this time, the bevel gear 33 matches the fast gear 52, thereby changing the rotation speed of the fan blade.

[0060] When a single fan module 1 works independently, the bevel gear 33 on the motor shaft 32 meshes with the slow gear 51. The slow gear 51 is designed with fewer teeth to provide a lower rotation speed, which is suitable for basic heat dissipation requirements. When two fan modules 1 are adjacent and combined, the plug 13 of the second fan module 1 is inserted into the jack 14 of the first fan module 1. This action not only realizes electrical connection but also triggers the switching of the speed regulation mechanism. With the sliding of the fast gear 52, the slow gear 51 originally meshing with the bevel gear 33 is pushed to a disengaged state, and then the fast gear 52 meshes with the bevel gear 33. Since the fast gear 52 has more teeth, this switching causes the rotation speed of the motor shaft 32 to increase. The increase in speed increases the air volume and heat dissipation capacity of the fan module 1, realizing an enhanced heat dissipation effect when combined. This design allows multiple fan modules 1 to work together, providing greater heat dissipation efficiency than a single module. The advantage of this solution is to provide a simple mechanical method to realize the dynamic adjustment of the fan rotation speed without a complex electronic control system. At the same time, it improves the adaptability and modular characteristics of the fan system.

[0061] It can be understood that the sliding connection mechanism is composed of a convex block 55 provided on the fan blade rotating shaft 5 and a groove provided on the inner wall of the slow-speed gear 51. The cooperation between the convex block 55 and the groove ensures the accurate positioning and sliding of the gear on the rotating shaft. In addition, the speed regulation mechanism further includes an L-shaped rod 4, a pushing ring 53 and a push rod 6. One end of the L-shaped rod 4 is connected to the shock-absorbing plate 141, and the other end is provided with a wedge surface that contacts one end of the push rod 6. Through the design of the speed regulation mechanism, the fan can switch between slow speed and fast speed according to the heat dissipation requirements, improving the heat dissipation efficiency and reducing the noise. When used alone, the bevel gear 33 meshes with the slow-speed gear 51 to provide stable slow rotation; when higher heat dissipation performance is required, through the action of the L-shaped rod 4, the fast gear 52 meshes with the bevel gear 33 to achieve fast rotation.

[0062] As shown in the Figure 10 accompanying drawings, in this embodiment, there is a more preferred implementation. The sliding connection mechanism includes a convex block 55 provided on the fan blade rotating shaft 5 and a groove provided on the inner wall of the slow-speed gear 51, and the convex block 55 and the groove match each other.

[0063] In this embodiment, the cooperation between the convex block 55 and the groove realizes the positioning and fixation of the gear, and at the same time allows the gear to be finely adjusted along the axis direction of the rotating shaft, allowing for a rapid adjustment of the rotational speed without sacrificing the positioning accuracy of the gear. When the L-shaped rod 4 pushes the push rod 6, the push rod 6 transmits the force to the pushing ring 53, which in turn pushes the fast gear 52 and the slow-speed gear 51 to slide along the convex block 55 on the rotating shaft to the corresponding groove positions, realizing the engagement or disengagement with the bevel gear 33.

[0064] Embodiment 2:

[0065] As a further optimization of the above embodiment, in this embodiment, the limiting cylinder 23, the first-level magnetic block 24, the second-level magnetic block 12 and the limiting groove 11 are all regular hexagons. The design of the regular hexagon makes it more convenient to align and position each component during production and assembly. The regular hexagonal limiting cylinder 23 and the limiting groove 11 provide a consistent contact surface and alignment method, ensuring the accurate installation of the through-threaded screw 21 and the magnetic block.

[0066] In this embodiment, the tooth ratio of the fast gear 52 to the slow-speed gear 51 is 2:1. The number of teeth of the fast gear 52 is twice that of the slow-speed gear 51, ensuring that it can provide double the rotational speed when meshing with the bevel gear 33, enabling the fan to respond quickly when enhanced heat dissipation performance is required, and at the same time providing a more silent operation through the slow-speed gear 51 under low load.

[0067] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure. The following points need to be explained: In the accompanying drawings of the embodiments of the present invention, only the structures related to the embodiments of the present invention are involved, and other structures can refer to the usual designs. Without conflict, the features in the same embodiment and different embodiments of the present invention can be combined with each other. The above is only an exemplary implementation manner of the present invention, rather than being used to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A quick-detachable computer cooling fan, comprising a fixing frame (2) and a plurality of fan modules (1), characterized in that: The fixing frame (2) is provided with an opening, and a through-thread screw (21) and a screw (22) are provided in the opening, and the through-thread screw (21) and the screw (22) cooperate to fix the fixing frame (2) at the heat dissipation port of the chassis; A primary magnetic block (24) is provided at one end of the threaded screw (21) away from the screw (22), and a secondary magnetic block (12) corresponding to the primary magnetic block (24) is provided on the fan module (1), and the primary magnetic block (24) and the secondary magnetic block (12) attract each other to fix the fan module (1) on the fixing frame (2); The opening, the primary magnetic block (24), the secondary magnetic block (12), the threaded screw (21) and the screw (22) are combined into a quick-release unit, and a plurality of quick-release units are provided on the fixing frame (2) to jointly fix the fan module (1); Each fan module (1) is provided with a driving mechanism for rotating the fan blades. A plug (13) and a socket (14) matching the plug (13) are provided on both sides of each fan module (1). When the plugs (13) and sockets (14) between adjacent fan modules (1) are electrically connected, power can be supplied to the driving mechanism, thereby driving the fan blades to rotate.

2. A quick-detachable computer cooling fan according to claim 1, characterized in that: There are two sockets (14) and two plugs (13) on each of the fan modules (1), and the plug (13) and the socket (14) are located on two opposite sides of the fan module (1).

3. A quick-detachable computer cooling fan according to claim 2, characterized in that: Four quick-release units are connected between each of the fan modules (1) and the fixing frame (2).

4. A quick-detachable computer cooling fan according to claim 3, characterized in that: The fixing frame (2) is provided with a limiting cylinder (23), and the threaded screw (21) is arranged inside the limiting cylinder (23); the fan module (1) is provided with a limiting groove (11) matching the limiting cylinder (23), and the secondary magnetic block (12) is arranged on the inner wall of the limiting groove (11).

5. The quick-detachable computer cooling fan according to claim 4, characterized in that: The driving mechanism comprises a motor (3), a fan blade rotating shaft (5) and a speed regulating mechanism for regulating the rotation speed of the fan blades; a stabilizing groove is provided at the lower part of the inner wall of the fan module (1); one end of the fan blade rotating shaft (5) can rotate in the stabilizing groove; and the other end of the fan blade rotating shaft (5) is connected to the fan blades.

6. A quick-detachable computer cooling fan according to claim 5, characterized in that: A shock absorbing plate (141) is provided in the socket (14), a primary spring (142) is provided between one side of the shock absorbing plate (141) and the inner wall of the socket (14) so ​​as to connect them, and a terminal (143) is provided on the other side opposite to the shock absorbing plate (141).

7. A quick-detachable computer cooling fan according to claim 6, characterized in that: The speed regulating mechanism comprises an umbrella-shaped gear (33), a slow gear (51) and a fast gear (52); the umbrella-shaped gear (33) is arranged on the motor shaft (32); the slow gear (51) and the fast gear (52) are fixedly connected as a whole; the slow gear (51) and the fast gear (52) are both connected to the fan blade shaft (5) via a sliding connection mechanism; the sliding connection mechanism allows the slow gear (51) and the fast gear (52) to slide on the fan blade shaft (5) and drive the fan blade shaft (5) to rotate under force; the slow gear (51) and the fast gear (52) are matched with the umbrella-shaped gear (33) respectively; The speed regulating mechanism further comprises an L-shaped rod (4), a pushing ring (53) and a pushing rod (6); the L-shaped rod (4) is arranged inside the frame of the fan module (1), one end of the L-shaped rod (4) is connected to the damping plate (141), and the other end is provided with a wedge-shaped surface; One end of the fast gear (52) is connected to the slow gear (51), and the other end is movably connected to a push ring (53). A push rod (6) is provided on the push ring (53). One end of the push rod (6) is connected to the push ring (53), and the other end of the push rod (6) contacts the wedge-shaped surface of the L-shaped rod (4). When the L-shaped rod (4) is moved by force and exerts force on the push rod (6), the push rod (6) moves the fast gear (52) and the slow gear (51) upward through the push ring (53). At this time, the umbrella gear (33) matches the fast gear (52), thereby changing the rotation speed of the fan blades.

8. The quick-detachable computer cooling fan according to claim 7, characterized in that: The sliding connection mechanism comprises a protrusion (55) provided on the fan blade rotating shaft (5) and a groove provided on the inner wall of the slow gear (51), and the protrusion (55) and the groove match each other.

9. The quick-detachable computer cooling fan according to claim 8, characterized in that: The limiting cylinder (23), the primary magnetic block (24), the secondary magnetic block (12) and the limiting groove (11) are all regular hexagonal shapes.

10. A quick-detachable computer cooling fan according to any one of claims 7 to 9, characterized in that: The gear ratio of the fast gear (52) to the slow gear (51) is 2:1.

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