Conveniently detachable heat dissipation fan

Abstract

The utility model relates to the field of heat dissipation fan of convenient detachable heat dissipation fan, including casing, the fan blade and drive source of setting in the inside of casing, drive source installs in the accommodation cavity and can drive the rotating action of fan blade, the both ends of casing are formed with first mounting flange and second mounting flange through injection moulding respectively, the side of first mounting flange is detachably connected with the front end cover, the side of second mounting flange is detachably connected with rear end cover, the utility model needs the complex screwing operation of the installation and dismounting of front end cover without the aid of tools, just can be completed with simple clamping and magnetic attraction cooperation, has improved the assembly efficiency of front end cover greatly, simultaneously, the subsequent front end cover is conveniently disassembled to the front end cover conveniently, and the inside surface of rear end cover and second mounting flange are positioned through the positioning structure and are inserted and positioned, the convenient dismounting design of front end cover and rear end cover improves the efficiency of cleaning or rapid overhaul to inside fan blade etc.

Description

Technical Field

[0001] This utility model relates to the field of cooling fans, specifically to a detachable cooling fan. Background Technology

[0002] Cooling fans, as key components in thermal management, are widely used in electronic equipment, industrial machinery, thermal management systems, and home appliances. They achieve efficient heat dissipation through forced convection heat transfer and are the core heat dissipation devices that ensure stable equipment operation. With the increasing integration and power density of electronic devices, higher requirements are placed on the protection performance, ease of installation, and long-term reliability of cooling fans.

[0003] Existing cooling fans typically consist of four parts: fan blade assembly, drive source, protective mesh cover, and mounting housing. The fan blades rotate under the drive source to generate airflow, thereby transferring heat from the heat source surface. The protective mesh cover mainly adopts a single-layer metal or plastic grid structure, which is fixed by bolts through the mounting holes reserved in the housing. The installation method is mostly screw locking or snap-fit ​​connection, and assembly is completed with the help of tools such as screwdrivers.

[0004] However, existing cooling fans still have certain shortcomings. They typically lack proper guards to protect the blades, allowing foreign objects, dust, lint, and other small particles to easily adhere to the blades, thus affecting heat dissipation efficiency. While some cooling fans incorporate simple guard structures, their installation generally relies on bolts to connect to the fan housing. This usually requires multiple tightening operations with tools, making the installation time-consuming and labor-intensive. Furthermore, the bolt holes require high precision, and repeated disassembly and reassembly can lead to stripped bolts and loose connections, affecting equipment maintenance efficiency and lifespan. Additionally, convenient disassembly and reassembly hinder subsequent cleaning or rapid maintenance of the guard. Therefore, there is an urgent need for a cooling fan with high protective capabilities and easy disassembly and reassembly. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned defects and provide a detachable cooling fan to solve the technical problem in the background art of how to make the cooling fan screen easy to assemble and disassemble, so as to improve the assembly efficiency of the screen and the subsequent easy disassembly, cleaning and maintenance of the screen.

[0006] The objective of this utility model is achieved through the following means:

[0007] A detachable cooling fan includes a housing, fan blades disposed inside the housing, and a drive source. The housing has a cavity for accommodating the fan blades, and the drive source is installed in the cavity and drives the fan blades to rotate. The two ends of the housing are respectively formed by injection molding with a first mounting flange and a second mounting flange. A front cover is detachably connected to the side of the first mounting flange, and a mounting groove for mate mounting the front cover is formed on the side of the first mounting flange. The front cover is snapped to the first mounting flange by a snap-fit ​​structure. The inner side of the front cover contacts the outer side of the first mounting flange and is limited by magnetic attraction. The front cover has a through air outlet. A rear cover is detachably connected to the side of the second mounting flange. The inner side of the rear cover is inserted and positioned with the second mounting flange by a positioning structure. The rear cover has a through air inlet.

[0008] Furthermore, as described above, the first mounting flange has a raised mounting portion on its side, the mounting portions are distributed at the four corners of the first mounting flange, and the mounting portions are provided with mounting holes for connection and installation. The four corners of the front end cover are provided with positioning portions that match the mounting portions.

[0009] When installing the front cover, the positioning part can be quickly and accurately positioned with the installation part to avoid misalignment. Compared with the traditional bolt connection, there is no need to use tools for multiple tightening operations, which improves the assembly efficiency of the front cover. Moreover, the installation process is simple and labor-saving, solving the problem of time-consuming and labor-intensive installation of existing mesh covers that rely on bolt connections.

[0010] Furthermore, as described above, a raised limiting protrusion is formed inside the mounting groove, and a magnetic block is embedded in the limiting protrusion. A raised snap-fit ​​protrusion is formed on the side of the first mounting flange. The snap-fit ​​structure includes a positioning groove and a snap-fit ​​opening. The front cover is snapped and matched with the limiting protrusion through the positioning groove, and the front cover is paired and inserted into the snap-fit ​​protrusion through the snap-fit ​​opening. A magnetic suction part is provided inside the positioning groove to magnetically connect with the magnetic block.

[0011] By combining snap-fit ​​and magnetic connection, the snap-fit ​​structure ensures a secure connection between the front cover and the first mounting flange, preventing the front cover from easily falling off. On the other hand, the magnetic connection between the magnetic part and the magnetic block further enhances the stability of the connection. At the same time, when it is necessary to remove the front cover for cleaning or maintenance, it is only necessary to overcome the magnetic force and release the snap-fit ​​connection. The operation is convenient and solves the problem that the existing mesh cover installation relies on bolt connection, which is not easy to install and remove, affecting subsequent cleaning or quick maintenance.

[0012] Furthermore, as described above, multiple limiting protrusions are provided, and the multiple limiting protrusions are distributed around the mounting groove.

[0013] Multiple limiting protrusions are distributed around the mounting groove. These protrusions can limit the front cover from multiple directions, making the front cover more stable after installation. It will not easily shake or shift due to external forces, thus ensuring the protective function of the front cover for the fan blades and improving the protection of the cooling fan.

[0014] Furthermore, as described above, the outer surface of the second mounting flange is formed with a raised positioning protrusion, and the positioning structure is composed of a positioning opening. The positioning opening is located on the rear end cover, so that the rear end cover can be engaged with the positioning protrusion through the positioning opening.

[0015] The positioning structure allows the rear cover to be positioned quickly and accurately during installation, and the snap-fit ​​method makes installation and disassembly convenient without complicated operations and tools, improving the assembly efficiency of the rear cover and facilitating subsequent disassembly, cleaning, or maintenance.

[0016] Furthermore, as described above, the second mounting flange has a connecting part on its side, a through connecting hole on the connecting part, and a fixing hole coaxially arranged with the connecting hole on the rear end cover.

[0017] By using bolts and other connectors to pass through the connecting holes and fixing holes, the rear end cover is further secured, which enhances the firmness of the connection between the rear end cover and the second mounting flange, ensures the stability of the rear end cover during the operation of the cooling fan, and improves the overall protection performance of the cooling fan.

[0018] Furthermore, as described above, the cavity is provided with a support for mounting the fan blades. The fan blades are paired with the support via a rotating shaft. A drive source is located between the support and the rotating shaft, and the drive source can drive the rotating shaft to rotate the fan blades.

[0019] The fan blades are paired with the support via a rotating shaft, and the drive source can drive the shaft to rotate the fan blades. This makes the installation and rotation of the fan blades more stable, ensuring that the cooling fan can operate normally and efficiently. At the same time, the reasonable layout also facilitates subsequent inspection and maintenance of components such as the fan blades and drive source, improving the service life and maintenance efficiency of the cooling fan.

[0020] The beneficial effects of this utility model are as follows: By forming an installation groove on the side of the first mounting flange for mating and installing the front cover, and by using a snap-fit ​​structure to hold the front cover to the first mounting flange, while the inner side of the front cover contacts the outer side of the first mounting flange and is magnetically limited, the installation and removal of the front cover can be completed without the need for complicated twisting operations using tools, but only with simple snap-fit ​​and magnetic attraction. This greatly improves the assembly efficiency of the front cover and also facilitates the subsequent easy disassembly of the front cover for cleaning or quick maintenance of the internal fan blades. Furthermore, the inner side of the rear cover is inserted and positioned to the second mounting flange through a positioning structure, making the installation and removal of the rear cover relatively simple and improving equipment maintenance efficiency. At the same time, the design of the front and rear covers can effectively reduce the adhesion of external foreign objects, dust, lint and other small particles to the fan blades, improving the protection and heat dissipation performance of the cooling fan. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure from the forward-looking angle in this embodiment;

[0022] Figure 2 This is a schematic diagram of the overall structure from the rear-view angle in this embodiment;

[0023] Figure 3 This is a cross-sectional view of this embodiment;

[0024] Figure 4 This is an exploded view of this embodiment;

[0025] Figure 5 for Figure 4 A magnified view of part A in the diagram;

[0026] Figure 6 This is an exploded view of the structure of this embodiment;

[0027] The reference numerals in the figure are as follows:

[0028] 100-Housing, 101-Receiving cavity, 102-First mounting flange, 103-Second mounting flange, 104-Mounting groove, 105-Mounting part, 106-Mounting hole, 107-Limiting protrusion, 108-Snap-on protrusion, 109-Positioning protrusion, 110-Connecting part, 111-Connecting hole;

[0029] 200-Fan blade; 300-Drive source; 400-Front end cover; 401-Air outlet; 402-Positioning part; 403-Positioning groove; 404-Snap-on opening; 405-Magnetic suction part; 500-Rear end cover; 501-Air inlet; 502-Positioning opening; 503-Fixing hole; 600-Magnetic suction block. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0031] To make the technical problem to be solved, the technical solution and the beneficial effects of this utility model clearer, the following describes the solution in further detail with reference to the accompanying drawings and embodiments.

[0032] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this scheme and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] In this embodiment, refer to Figures 1-6 The detachable cooling fan, specifically implemented therein, includes a housing 100, fan blades 200 disposed inside the housing 100, and a drive source 300. The housing 100 has a receiving cavity 101 for accommodating the fan blades 200. The drive source 300 is installed in the receiving cavity 101 and can drive the fan blades 200 to rotate. A first mounting flange 102 and a second mounting flange 103 are respectively formed at both ends of the housing 100 by injection molding. A front end cover 400 is detachably connected to the side of the first mounting flange 102. The side has a mounting groove 104 for mating and mounting the front cover 400. The front cover 400 is snapped to the first mounting flange 102 by a snap-fit ​​structure. The inner side of the front cover 400 contacts the outer side of the first mounting flange 102 and is limited by magnetic attraction. The front cover 400 has a through air outlet 401. The side of the second mounting flange 103 is detachably connected to the rear cover 500. The inner side of the rear cover 500 is inserted and positioned to the second mounting flange 103 by a positioning structure. The rear cover 500 has a through air inlet 501.

[0034] The convenient disassembly and assembly design of the front cover 400 and the rear cover 500 allows for quick opening of the front cover 400 and the rear cover 500 when maintenance of the cooling fan is required, such as cleaning dust on the fan blades 200 or checking the drive source 300. This eliminates the need to spend a lot of time on tedious disassembly and assembly operations, thereby improving the maintenance efficiency of the equipment.

[0035] The first mounting flange 102 has a raised mounting portion 105 on its side. The mounting portions 105 are distributed at the four corners of the first mounting flange 102, and the mounting portions 105 are provided with mounting holes 106 for connection and installation. The front end cover 400 is provided with positioning portions 402 that match the mounting portions 105 at each of its four corners.

[0036] When installing the front cover 400, the positioning part 402 can quickly and accurately position itself with the installation part 105 to avoid misalignment. Compared with the traditional bolt connection, it does not require multiple tightening operations with tools, which improves the assembly efficiency of the front cover 400. The installation process is simple and labor-saving, solving the problem of time-consuming and labor-intensive installation of existing mesh covers that rely on bolt connections.

[0037] The mounting groove 104 has a raised limiting protrusion 107 inside, and a magnetic block 600 is embedded in the limiting protrusion 107. The side of the first mounting flange 102 has a raised snap-fit ​​protrusion 108. The snap-fit ​​structure includes a positioning groove 403 and a snap-fit ​​opening 404. The front end cover 400 is snapped and matched with the limiting protrusion 107 through the positioning groove 403, and the front end cover 400 is matched and inserted into the snap-fit ​​protrusion 108 through the snap-fit ​​opening 404. The positioning groove 403 is provided with a magnetic suction part 405 that is magnetically connected to the magnetic block 600.

[0038] By combining snap-fit ​​and magnetic connection, on the one hand, the snap-fit ​​structure can achieve a stable connection between the front cover 400 and the first mounting flange 102, preventing the front cover 400 from easily falling off; on the other hand, the magnetic connection between the magnetic part 405 and the magnetic block 600 further enhances the stability of the connection. At the same time, when it is necessary to remove the front cover 400 for cleaning or maintenance, it is only necessary to overcome the magnetic force and release the snap-fit ​​connection, which is convenient to operate and solves the problem that the existing mesh cover installation relies on bolt connection, which is not easy to disassemble and install, affecting subsequent cleaning or quick maintenance.

[0039] Multiple limiting protrusions 107 are provided, and the multiple limiting protrusions 107 are distributed around the mounting groove 104.

[0040] Multiple limiting protrusions 107 are distributed around the mounting groove 104. The multiple limiting protrusions 107 can limit the front cover 400 from multiple directions, making the front cover 400 more stable after installation. It will not easily shake or shift due to external forces, ensuring the protective function of the front cover 400 on the fan blade 200 and improving the protection of the cooling fan.

[0041] The outer side of the second mounting flange 103 has a raised positioning protrusion 109. The positioning structure is composed of a positioning opening 502. The positioning opening 502 is provided on the rear end cover 500 so that the rear end cover 500 is engaged with the positioning protrusion 109 through the positioning opening 502.

[0042] The positioning structure allows the rear cover 500 to be positioned quickly and accurately during installation. The snap-fit ​​method makes installation and disassembly convenient, requiring no complicated operations or tools, which improves the assembly efficiency of the rear cover 500 and also facilitates subsequent disassembly, cleaning, or maintenance of the rear cover 500.

[0043] The second mounting flange 103 has a connecting part 110 on its side, and a through connecting hole 111 on the connecting part 110. The rear end cover 500 has a fixing hole 503 that is coaxially arranged with the connecting hole 111.

[0044] By using bolts and other connectors to pass through the connecting hole 111 and the fixing hole 503, the rear end cover 500 is further secured, which enhances the firmness of the connection between the rear end cover 500 and the second mounting flange 103, ensures the stability of the rear end cover 500 during the operation of the cooling fan, and improves the overall protection performance of the cooling fan.

[0045] The cavity 101 is provided with a support for mounting the fan blade 200. The fan blade 200 is paired with the support via a rotating shaft. The drive source 300 is located between the support and the rotating shaft, and the drive source 300 can drive the rotating shaft to rotate the fan blade 200.

[0046] The fan blade 200 is paired with the support via a rotating shaft, and the drive source 300 drives the rotating shaft to rotate the fan blade 200. This makes the installation and rotation of the fan blade 200 more stable, ensuring that the cooling fan can operate normally and efficiently. At the same time, the reasonable layout also facilitates the subsequent inspection and maintenance of components such as the fan blade 200 and the drive source 300, improving the service life and maintenance efficiency of the cooling fan.

[0047] Specifically, in this embodiment, the driving source 300 is a drive motor, and the rotation of the fan blade 200 driven by the drive motor is a conventional and well-known technique for those skilled in the art, and will not be described in detail here.

[0048] The specific operating principle in this embodiment is as follows:

[0049] The drive source 300 and fan blade 200 are paired and installed in the receiving cavity 101. The drive source 300 is electrically connected to an external power source, enabling the drive source 300 to drive the fan blade 200 to rotate. A mounting groove 104 for pairing and installing the front cover 400 is opened on the side of the first mounting flange 102. A raised limiting protrusion 107 is formed in the mounting groove 104. A magnetic block 600 is embedded in the upper surface of the limiting protrusion 107. The front cover 400 is paired and locked with the limiting protrusion 107 through the positioning groove 403. Specifically, four limiting protrusions 107 are provided and distributed at the four corners of the first mounting flange 102. Meanwhile, the inner side of the front cover 400 contacts the outer side of the first mounting flange 102 and is magnetically limited by the magnetic suction part 405 and the magnetic suction block 600, so that the installation and removal of the front cover 400 can be completed without the need for complicated twisting operations with tools, but only with simple clamping and magnetic attraction. This greatly improves the assembly efficiency of the front cover 400 and facilitates the convenient disassembly of the front cover 400 for cleaning or quick maintenance of the internal fan blades 200, etc. At the same time, the snap-fit ​​connection between the snap-fit ​​opening 404 and the snap-fit ​​protrusion 108 ensures the stability and firmness of the connection between the front cover 400 and the housing 100.

[0050] The rear end cover 500 is positioned by insertion through the positioning opening 502 and the positioning protrusion of the second mounting flange 103, making the installation and disassembly of the rear end cover 500 easier and improving equipment maintenance efficiency. Simultaneously, the connecting hole 111 on the rear end cover 500 matches the fixing hole 503, allowing the cooling fan to be fixed to an external location by bolts passing through the fixing hole 503 and the connecting hole 111 in sequence. The front end cover 400 and the rear end cover 500 effectively reduce the adhesion of external foreign objects, dust, lint, and other small particles to the fan blades 200, improving the cooling fan's protection and heat dissipation performance.

[0051] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A detachable cooling fan, comprising a housing, fan blades disposed inside the housing, and a drive source, wherein the housing has a cavity for accommodating the fan blades, and the drive source is installed in the cavity and can drive the fan blades to rotate, characterized in that: The housing has a first mounting flange and a second mounting flange formed by injection molding at both ends. A front cover is detachably connected to the side of the first mounting flange, and a mounting groove for mating the front cover is formed on the side of the first mounting flange. The front cover is snapped to the first mounting flange by a snap-fit ​​structure. The inner side of the front cover contacts the outer side of the first mounting flange and is limited by magnetic attraction. A through air outlet is provided on the front cover. A rear cover is detachably connected to the side of the second mounting flange. The inner side of the rear cover is inserted and positioned to the second mounting flange by a positioning structure. A through air inlet is provided on the rear cover.

2. The easily detachable cooling fan according to claim 1, characterized in that: The first mounting flange has a raised mounting portion on its side, which is distributed at the four corners of the first mounting flange. The mounting portion is provided with mounting holes for connection and installation. The four corners of the front end cover are provided with positioning portions that match the mounting portions.

3. The easily detachable cooling fan according to claim 1, characterized in that: The mounting groove has a raised limiting protrusion inside, and a magnetic block is embedded in the limiting protrusion. The side of the first mounting flange has a raised snap-fit ​​protrusion. The snap-fit ​​structure includes a positioning groove and a snap-fit ​​opening. The front cover is snapped and matched with the limiting protrusion through the positioning groove, and the front cover is paired and inserted into the snap-fit ​​protrusion through the snap-fit ​​opening. The positioning groove is provided with a magnetic part that is magnetically connected to the magnetic block.

4. The easily detachable cooling fan according to claim 3, characterized in that: The limiting protrusions are provided in multiple ways, and the multiple limiting protrusions are distributed around the mounting groove.

5. The easily detachable cooling fan according to claim 1, characterized in that: The outer surface of the second mounting flange has a raised positioning protrusion. The positioning structure is composed of a positioning opening, which is located on the rear end cover, so that the rear end cover can be engaged with the positioning protrusion through the positioning opening.

6. The easily detachable cooling fan according to claim 5, characterized in that: The second mounting flange has a connecting part on its side, and a through connecting hole on the connecting part. The rear end cover has a fixing hole that is coaxial with the connecting hole.

7. The easily detachable cooling fan according to any one of claims 1-6, characterized in that: The cavity is provided with a support for mounting the fan blades. The fan blades are paired with the support via a rotating shaft. A drive source is located between the support and the rotating shaft, and the drive source can drive the rotating shaft to rotate the fan blades.

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