Cooling fan

Abstract

The utility model belongs to the technical field of computer auxiliary equipment, and provides a cooling fan which comprises a fan core, a fan frame and a magnetic assembly, the fan core comprises an impeller and a surrounding frame used for containing the impeller, and connecting lugs are arranged on the periphery of the surrounding frame; the fan frame is provided with a center hole used for containing the fan core, a fixing groove is formed in the position, located on the inner wall of the center hole, of the fan frame, and the fixing groove is communicated with the center hole and allows the connecting lug to be embedded in. The magnetic attraction assemblies are arranged on the connecting lugs and the fixing grooves of the fan frame respectively, so that the connecting lugs can be magnetically attracted and fixed in the fixing grooves. The technical problems that in the prior art, a fan core disassembling and assembling structure on a cooling fan is complex, and maintenance and replacement are not facilitated are solved.

Description

Technical Field

[0001] This application belongs to the technical field of computer-aided devices, and particularly relates to a cooling fan capable of quickly disassembling and assembling the fan core. Background Art

[0002] Generally, cooling fans are provided inside the computer main chassis, and these cooling fans are used to dissipate heat from the internal environment of the chassis and the electrical components inside the chassis. Components with relatively large heat generation, such as the central processing unit (CPU) and graphics card, need to be provided with cooling fans thereon to achieve the purpose of cooling and heat dissipation.

[0003] For the overall structure of the cooling fan, the cooling fan generally includes a rectangular housing, and the middle part of the housing has a fan core, which includes an impeller and a motor for driving the impeller to rotate. In order to install the impeller and its driving motor, the middle part of the housing is a circular frame, and a bracket is provided in the circular frame so that the impeller and the motor can be arranged on the bracket at the center of the circular frame.

[0004] However, the cooling fans of the prior art are already shaped when leaving the factory and cannot be changed subsequently. If it is necessary to replace the fan core from the above cooling fan structure, the entire cooling fan needs to be disassembled from the installation carrier (such as a radiator, graphics card, CPU, or main chassis, etc.), and then the screws are removed by disassembly tools such as screwdrivers, and then the impeller and the motor are disassembled from the bracket at the center of the housing, so as to replace the new fan core.

[0005] It can be seen that the entire operation of repairing or replacing the fan core is cumbersome and very complex, and no longer meets the usage requirements of today's computer DIY users. Summary of the Invention

[0006] The purpose of the embodiments of this application is to provide a cooling fan to solve the technical problem that the fan core disassembly and assembly structure on the existing cooling fan is complex and not conducive to maintenance and replacement.

[0007] To achieve the above purpose, the technical solution adopted in this application is: providing a cooling fan, including:

[0008] A fan core, including an impeller and a surrounding frame for accommodating the impeller, and connecting ears are provided on the outer periphery of the surrounding frame;

[0009] A fan frame, having a central hole for accommodating the fan core, and fixing grooves are provided on the inner wall of the fan frame at the central hole, and the fixing grooves communicate with the central hole and are for the connecting ears to be embedded;

[0010] A magnetic attraction component, which is respectively arranged on the connecting ears and the fixing grooves of the fan frame, so that the connecting ears can be magnetically fixed in the fixing grooves.

[0011] The beneficial effects of the cooling fan provided by this application are as follows: Compared with the prior art, the structure of the cooling fan in this application is redesigned. The cooling fan includes two parts, a fan core and a fan frame, with a simple structure. The fan frame is set on the computer main case without the need for disassembly. The fan core is a separate detachable component of the cooling fan, and magnetic components that magnetically attract and cooperate with each other are provided on the fan core and the fan frame. In this way, without disassembling the fan frame in the computer main case, users can quickly disassemble and assemble the fan core by hand without auxiliary tools, which is convenient for maintenance or replacement of a new fan core, with convenient operation and effectively improving the disassembly and assembly efficiency of the fan core. It is beneficial for users to freely DIY the fan core, such as replacing impellers of different colors or adding lighting fixtures to the fan core, etc., thereby meeting the usage requirements of DIY users.

[0012] Improve the structure of the magnetic component. The magnetic attraction component includes a first magnetic part and a second magnetic part. The first magnetic part is set on the connecting ear, and the second magnetic part is set in the fixing groove of the fan frame and corresponds to the position of the first magnetic part. In this way, by the magnetic attraction cooperation between the first magnetic part and the second magnetic part, the connecting ear can be fixed in the fixing groove, thereby improving the fixing effect on the fan core and effectively ensuring the stability of the fan core operation.

[0013] Improve the structure of the connecting ear on the fan core. The connecting ear includes a boss extending outward from the outer periphery of the surrounding frame. The boss has an inner cavity for accommodating the first magnetic part, so that the connecting ear has a magnetic attraction function. Let the first magnetic part be accommodated inside the boss to avoid direct magnetic attraction contact between the first magnetic part and the second magnetic part, effectively limiting the magnetic attraction intensity, which is beneficial for separating the two from each other under the action of the force applied by the human hand, and is convenient for taking out the fan core from the fan frame.

[0014] In one embodiment, an installation opening is provided on the boss, and the first magnetic part is loaded into the inner cavity of the boss from the installation opening. The connecting ear further includes a protective sleeve, and the protective sleeve is sleeved on the boss and covers the installation opening on the boss, using the protective sleeve to limit the first magnetic part in the boss. In addition, the protective sleeve also plays an isolation role between the first magnetic part and the second magnetic part, avoiding too strong magnetic attraction between the two and being difficult to separate, and improving the convenience of the disassembly and assembly operation of the fan core.

[0015] In one embodiment, the protective sleeve is made of soft rubber material, so that the protective sleeve has buffer elasticity, which is beneficial for filling the dimensional tolerance and buffering the vibration generated during the operation of the fan core.

[0016] In one embodiment, a positioning bump is further connected between the boss and the outer peripheral surface of the surrounding frame. The positioning bump has a protruding portion protruding from the boss; a guiding groove is formed on the protective sleeve, and the guiding groove is used for being engaged with the protruding portion. By engaging the protruding portion on the positioning bump with the guiding groove on the protective sleeve, the installation orientation of the protective sleeve is effectively defined, playing a role in preventing incorrect installation.

[0017] Improve the structure of the fixing groove on the fan frame. The fixing groove on the fan frame is a semi-circular groove with an upper opening and one side communicating with the central hole. The shapes of the connecting ear and the protective sleeve are both adapted to the fixing groove, so that the connecting ear can smoothly slide into the fixing groove of the fan frame, thereby improving the operation efficiency of installing the fan core.

[0018] In one embodiment, a groove is provided in the fixing groove on the fan frame, and the groove is used for installing the second magnetic member. At least a part of the second magnetic member protrudes from the notch of the groove so as to be magnetically connected to the first magnetic member provided on the connecting ear.

[0019] Improve the structure of the cooling fan. An electrical contact for electrical connection is further provided on the inner wall of the fan frame at the central hole. An electrical contact for contacting the electrical contact is provided on the surrounding frame of the fan core. The electrical contact is electrically connected to the impeller in the surrounding frame through a cable; there are a plurality of the connecting ears on the fan core, and the fan frame has the same number of fixing grooves as the connecting ears. At least one of the connecting ears and one of the fixing grooves are provided with marks for alignment and cooperation. In this way, the user can confirm the installation posture of the fan core through the marks. When operating the fan core to be installed in the central hole of the fan frame, the electrical contact on the fan core and the electrical contact on the inner wall of the fan frame can be automatically aligned and contacted, and at the same time, the fan core and the fan frame are electrically connected.

[0020] In one embodiment, a foot pad matching the shape of the corner of the fan frame is provided on the end surface of the fan frame. The foot pad has an avoidance hole matching the position of the fixing groove, so as to avoid the foot pad blocking the fixing groove. In this way, the fan core can be smoothly disassembled and assembled on the fan frame without removing the foot pad 24. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1Schematic three-dimensional structure diagram of the cooling fan provided by the embodiment of the present application;

[0023] Figure 2 Schematic three-dimensional structure diagram of the fan core provided by the embodiment of the present application;

[0024] Figure 3 Schematic assembly structure diagram of the cooling fan provided by the embodiment of the present application;

[0025] Figure 4 Schematic exploded structure diagram of the fan core provided by the embodiment of the present application;

[0026] Figure 5 Schematic exploded structure diagram of the fan frame provided by the embodiment of the present application Figure 1 ;

[0027] Figure 6 is Figure 4 Schematic enlarged structure diagram of part A of;

[0028] Figure 7 Schematic three-dimensional structure diagram of the protective cover provided by the embodiment of the present application;

[0029] Figure 8 Schematic exploded structure diagram of the fan frame provided by the embodiment of the present application Figure 2 .

[0030] Among them, the reference numerals in the figure are as follows:

[0031] 1 - fan core; 11 - impeller; 12 - surrounding frame; 13 - bracket; 14 - electrical contact;

[0032] 2 - fan frame; 20 - central hole; 21 - fixing groove; 22 - groove; 23 - electrical contact; 24 - foot pad; 241 - avoidance hole;

[0033] 3 - connecting ear; 31 - boss; 311 - inner cavity; 312 - mounting opening; 32 - protective cover; 321 - orientation groove; 33 - positioning bump; 331 - protruding part;

[0034] 41 - first magnetic part; 42 - second magnetic part. Detailed implementation manners

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0037] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0038] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0039] As users increasingly favor DIY, a computer case with a perspective function allows people to clearly see the operation of various electrical components inside the computer host, highlighting a mechanical and technological sense. To add color to the host, lighting fixtures, a water cooling system, etc. can be set inside the host to make the whole more dazzling and beautiful. Herein, the cooling fan on the computer not only plays a role in heat dissipation but also serves as a decoration or a place to set lighting fixtures. For example, the impeller of the cooling fan can adopt impellers of different colors or be provided with light-emitting lighting fixtures, etc., to achieve corresponding DIY designs.

[0040] However, the traditional cooling fan is already finalized at the time of factory production and cannot be changed subsequently. If it is necessary to replace the fan core (i.e., the impeller part on the fan), the entire cooling fan needs to be removed from the installation carrier (such as a radiator, a graphics card, a CPU, or a computer case, etc.), and then the screws need to be removed using disassembly tools such as a screwdriver, etc., in order to remove the impeller and the motor from the bracket at the center of the housing, so as to replace the new fan core or set new lighting fixture components. It can be seen that the entire operation of repairing or replacing the fan core is cumbersome and very complex, and no longer meets the usage requirements of today's computer DIY users.

[0041] Herein, an embodiment of the present application provides a novel cooling fan. The structure of the cooling fan is redesigned so that users can quickly disassemble and assemble the fan core without using auxiliary tools and removing the fan from the host, facilitating repair or replacement of the new fan core, meeting the usage requirements of computer DIY users, and effectively solving the problem that the disassembly and assembly structure of the fan core on the traditional cooling fan is complex and not conducive to repair and replacement. Now, a detailed description thereof is given.

[0042] Please refer to Figure 1 、 Figure 2 and Figure 3 together. The cooling fan includes a fan core 1, a fan frame 2, and a magnetic attraction assembly.

[0043] The fan core 1 includes an impeller 11 and a surrounding frame 12. The impeller 11 is received within the surrounding frame 12. The surrounding frame 12 is preferably a circular frame to match the shape and operation of the impeller 11. A bracket 13 is provided inside the surrounding frame 12, and the impeller 11 and a motor (not shown in the figure) for driving the impeller 11 to operate can be disposed at the center of the bracket 13.

[0044] A connecting ear 3 is provided on the outer periphery of the surrounding frame 12, and this connecting ear 3 is used to enable the fan core 1 to be quickly disassembled and assembled on the fan frame 2.

[0045] The fan frame 2 is preferably the housing of the cooling fan, generally a rectangular frame. The fan frame 2 has a central hole 20 for accommodating the fan core 1. A fixing groove 21 is formed on the inner wall of the fan frame 2 at the central hole 20. The fixing groove 21 communicates with the central hole 20 and is for the connecting ear 3 to be inserted and fixed.

[0046] In this embodiment, as Figure 3 shown, four fixing grooves 21 are provided on the inner wall of the fan frame 2 at the central hole 20, and these four fixing grooves 21 are evenly distributed on the inner wall of the fan frame 2. These fixing grooves 21 can preferably be grooves with side portions communicating with the central hole 20 and having upper openings. The surrounding frame 12 of the fan core 1 is provided with connecting ears 3 having the same number as the fixing grooves 21. When the fan core 1 is installed in the central hole 20 of the fan frame 2, each connecting ear 3 on the outer periphery of the surrounding frame 12 can be respectively inserted into the fixing groove 21 at the corresponding position to achieve installation positioning.

[0047] The magnetic attraction assemblies are respectively disposed on the connecting ear 3 and the fixing groove 21 of the fan frame 2, so that the connecting ear 3 can be magnetically fixed in the fixing groove 21, so that the whole fan core 1 can be fixed in the central hole 20 of the fan frame 2. When disassembling the fan core 1, a person can apply a force greater than the magnetic attraction force to the fan core 1, thereby taking out the fan core 1 from the fan frame 2 to complete rapid disassembly.

[0048] Compared with the prior art, the cooling fan provided by the embodiment of the present application has a cooling fan that uses a surrounding frame 12 to set the impeller 11 and its driving motor as an independent detachable fan core 1, which is installed on the central hole 20 of the fan frame 2 according to the usage requirements. A connecting ear 3 with a magnetic attraction function is provided on the outer periphery of the surrounding frame 12 of the fan core 1. A fixing groove 21 for embedding the connecting ear 3 is provided on the fan frame 2, and a magnetic attraction component for magnetic attraction cooperation is provided in the fixing groove 21. When the fan core 1 is installed on the central hole 20 of the fan frame 2, the connecting ears 3 can be respectively embedded into the corresponding fixing grooves 21 and magnetically fixed at the same time, effectively ensuring the installation and fixing effect of the fan core 1. When it is necessary to disassemble the fan core 1, a force greater than the magnetic attraction force can be directly applied by hand to separate the connecting ear 3 from the fixing groove 21, so as to take out the fan core 1 from the central hole 20 of the fan frame 2.

[0049] It can be seen that the cooling fan provided by the embodiment of the present application has a simple structure, including two parts: a fan core 1 and a fan frame 2. The fan frame 2 is set on the computer main chassis and does not need to be disassembled; the fan core 1 is a separate detachable component on the cooling fan, and a magnetic attraction component for magnetic attraction cooperation is provided on the fan core 1 and the fan frame 2. In this way, without disassembling the fan frame 2 in the computer main unit, the user can quickly disassemble and assemble the fan core 1 by hand without auxiliary tools, which is convenient for maintenance or replacement of a new fan core 1, with convenient operation and effectively improving the disassembly and assembly efficiency of the fan core 1. It is beneficial for the user to freely DIY the fan core 1, such as replacing the impeller 11 of different colors or adding lighting fixtures on the fan core 1, etc., so as to meet the usage requirements of DIY users.

[0050] For the specific structure of the magnetic component, in an embodiment of the present application, please refer to Figure 4 and Figure 5 , the magnetic attraction component includes a first magnetic member 41 and a second magnetic member 42. The first magnetic member 41 is provided on the connecting ear 3, and the second magnetic member 42 is provided in the fixing groove 21 on the fan frame 2 and corresponds to the position of the first magnetic member 41.

[0051] For the first magnetic member 41 and the second magnetic member 42, it can preferably be a magnetic attraction combination of a magnet and a magnet, or a magnetic attraction combination of a magnet and a magnetizable metal such as iron, etc. It can be specifically set according to the usage requirements and is not specifically limited here.

[0052] In this way, by using the magnetic attraction cooperation between the first magnetic member 41 and the second magnetic member 42, the connecting ear 3 can be fixed in the fixing groove 21, thereby improving the overall fixing effect of the fan core 1, avoiding the fan core 1 from being easily detached during operation, and effectively ensuring the stability of the operation of the fan core 1.

[0053] For the specific structure of the connecting ear 3 on the fan core 1, in an embodiment of the present application, please refer to Figure 4 and Figure 6, the connecting ear 3 includes a boss 31 extending outward from the outer periphery of the surrounding frame 12. The boss 31 has an inner cavity 311 for accommodating the first magnetic member 41, so that the connecting ear 3 has a magnetic attraction function. When the fan core 1 is installed in the central hole 20 of the fan frame 2, the connecting ear 3 is embedded in the fixing groove 21, and the first magnetic member 41 inside is magnetically fixed to the second magnetic member 42 in the fixing groove 21.

[0054] In addition, the first magnetic member 41 is accommodated inside the boss 31, avoiding direct magnetic attraction contact between the first magnetic member 41 and the second magnetic member 42, effectively restricting the magnetic attraction intensity, which is beneficial to separating the two from each other under the action of a force applied by a human hand, and facilitating the removal of the fan core 1 from the fan frame 2.

[0055] Preferably, the boss 31 is integrally connected to the outer periphery of the surrounding frame 12, which is beneficial to improving the connection strength between each boss 31 and the surrounding frame 12.

[0056] Regarding the installation structure of the first magnetic member 41 on the connecting ear 3, in an embodiment of the present application, please refer to Figure 4 and Figure 6 , an installation opening 312 is provided on the boss 31, and the first magnetic member 41 is loaded into the inner cavity 311 of the boss 31 from the installation opening 312.

[0057] The connecting ear 3 further includes a protective sleeve 32. The protective sleeve 32 is sleeved on the boss 31 and covers the installation opening 312 on the boss 31 to accommodate the first magnetic member 41 in the inner cavity 311 of the boss 31.

[0058] It can be seen that the installation structure of the first magnetic member 41 on the connecting ear 3 is very simple. The protective sleeve 32 is sleeved on the boss 31 and at the same time the first magnetic member 41 is restricted in the inner cavity 311 of the boss 31.

[0059] The protective sleeve 32 also plays an isolation role between the first magnetic member 41 and the second magnetic member 42, avoiding the too large magnetic attraction intensity between the two and being difficult to separate, and improving the convenience of the disassembly and assembly operation of the fan core 1.

[0060] In addition, in practical applications, in order to enable the connecting ear 3 to smoothly slide into the fixing groove 21 on the fan frame 2, generally the width of the fixing groove 21 is preset to be greater than that of the connecting ear 3, so that there is an active gap between the inner wall of the connecting ear 3 and the fixing groove 21. Thus, the protective sleeve 32 is sleeved on the boss 31, and the protective sleeve 32 can also be used to reduce the reserved gap between the inner wall of the fixing groove 21 and the outer periphery of the connecting ear 3, thereby improving the fixing effect on the connecting ear 3.

[0061] The mounting opening 312 on the boss 31 can be opened on the upper end surface or the lower end surface of the boss 31. In this embodiment, the mounting opening 312 can be preferably opened on the lower end surface of the boss 31, and the protective cover 32 is directly covered on the mounting opening 312. Since the mounting opening 312 is a small part of the boss 31, when the first magnetic part 41 is accommodated in the inner cavity 311 of the boss 31, the first magnetic part 41 directly contacts the inner wall of the protective cover 32. In this way, when the connecting ear 3 is embedded in the fixing groove 21 on the fan frame 2, the first magnetic part 41 and the second magnetic part 42 are magnetically attracted to each other. The first magnetic part 41 and the second magnetic part 42 are separated by the protective cover 32, which is conducive to reducing the thickness of the boss 31, thereby ensuring the magnetic attraction strength.

[0062] Preferably, the protective cover 32 is made of a soft rubber material to provide a cushioning elasticity. On the one hand, the protective cover 32 can compensate for the dimensional tolerance between the connecting ear 3 and the inner wall of the fixing groove 21. On the other hand, the elasticity of the protective cover 32 can buffer the vibration generated by the fan core 1 during operation, thereby reducing the impact on the fan frame 2.

[0063] Preferably, the edges of the protective cover 32 are chamfered to form inclined surfaces on each edge of the protective cover 32. This helps the connecting ear 3 to automatically align with the notch of the fixing groove 21 and slide smoothly into the fixing groove 21, thereby improving installation efficiency.

[0064] Regarding the mounting structure between the protective cover 32 and the boss 31, in one embodiment of the present application, please refer to Figure 4 、 Figure 6 and Figure 7 A positioning convex block 33 is further connected between the boss 31 and the outer peripheral surface of the surrounding frame 12. The positioning convex block 33 has a protrusion 331 protruding from the boss 31. An orientation groove 321 is provided on the protective cover 32 for engaging with the protrusion 331.

[0065] In this way, the protrusion 331 on the positioning protrusion 33 and the orientation groove 321 on the protective cover 32 are engaged with each other, thereby effectively limiting the installation direction of the protective cover 32 and playing a role in preventing installation errors.

[0066] In practical applications, the boss 31 on the surrounding frame 12 has a small volume, and the mounting opening 312 on the boss 31 is even more difficult to distinguish, which is not conducive to the processing personnel to install the first magnetic member 41 on each boss 31. For this reason, in this embodiment, the protruding portion 331 on the positioning bump 33 protrudes on one side of the mounting opening 312 of the boss 31; correspondingly, the positioning groove on the protective sleeve 32 is opened on the edge of the end surface for covering the mounting opening 312. In this way, the protruding portion 331 on the positioning bump 33 can be used as an identifier for the position where the mounting opening 312 is located, and the processing personnel can confirm the position of the mounting opening 312 by touching the protruding portion 331 of the positioning bump 33, thereby improving the processing efficiency.

[0067] Regarding the structure of the fixing groove 21 on the fan frame 2, in an embodiment of the present application, please refer to Figure 4 and Figure 5 , the fixing groove 21 on the fan frame 2 can preferably be a semi-circular groove with an upper opening and one side communicating with the central hole 20, and the shapes of the connecting ears 3 on the fan core 1 and the protective sleeve 32 are both adapted to the fixing groove 21.

[0068] In this way, compared with using a groove structure of a polygon such as a quadrilateral, in the fan frame 2 provided by the embodiment of the present application, the fixing groove 21 is a semi-circular groove, making the contour of the fixing groove 21 smooth and easy to transition. The shapes of the connecting ears 3 and the protective sleeve 32 are matched therewith, so that the connecting ears 3 can smoothly slide into the fixing groove 21 of the fan frame 2, effectively improving the operation efficiency of installing the fan core 1.

[0069] Regarding the installation structure of the second magnetic member 42 on the fan frame 2, in an embodiment of the present application, please refer to Figure 5 , a groove 22 is provided in the fixing groove 21 on the fan frame 2, and the groove 22 is used to install the second magnetic member 42, and at least part of the second magnetic member 42 protrudes from the notch of the groove 22 for magnetic attraction and fixation with the connecting ear 3.

[0070] In this embodiment, the fixing groove 21 is provided on the inner wall of the fan frame 2, and the fixing groove 21 is a blind groove, so that the bottom of each fixing groove 21 has a supporting surface, and the groove 22 is opened on the supporting surface. The size and shape of the groove 22 are adapted to the second magnetic member 42, so that the second magnetic member 42 can be embedded in the groove 22, and the upper end surface of the second magnetic member 42 is exposed at the notch of the groove 22 for magnetic attraction connection with the first magnetic member 41 provided on the connecting ear 3.

[0071] Preferably, fixing methods such as pasting or welding can be used to fix the second magnetic member 42 in the groove 22, thereby preventing the second magnetic member 42 from falling off easily and improving the fixing effect on the second magnetic member 42.

[0072] Since the fan core 1 and the fan frame 2 are two separate components, an electrical connection structure is required between them to enable the normal operation of the impeller 11 on the fan core 1. In this regard, for the electrical connection structure between the fan core 1 and the fan frame 2, in an embodiment of the present application, please refer to Figure 3 , Figure 4 and Figure 5 , an electrical contact 23 for electrical connection is further provided on the inner wall of the central hole 20 of the fan frame 2, and an electrical contact 14 for contacting the above electrical contact 23 is provided on the surrounding frame 12 of the fan core 1. The electrical contact 14 is electrically connected to the impeller 11 in the surrounding frame 12 through a cable. Among them, as Figure 4 shown, the cable can extend from the outer peripheral surface of the surrounding frame 12 to the middle of the surrounding frame 12 through the bracket 13 in the surrounding frame 12, so that the electrical contact 14 is arranged on the outer peripheral surface of the surrounding frame 12 and can be electrically connected to the impeller motor at the center of the surrounding frame 12. The fan core 1 has a plurality of connecting ears 3, and the fan frame 2 has fixing grooves 21 with the same number as the connecting ears 3.

[0073] In this way, when the fan core 1 is installed in the central hole 20 of the fan frame 2, each connecting ear 3 is fixed in the corresponding fixing groove 21, and the electrical contact 14 on the fan core 1 contacts the electrical contact 23 on the inner wall of the fan frame 2, realizing electrical connection at the same time.

[0074] During the installation process, since it is difficult to judge the relative positions of the electrical contact 14 on the fan core 1 and the electrical contact 23 on the inner wall of the fan frame 2, it is not easy to align them, which affects the installation efficiency. In this regard, in an embodiment of the present application, at least one connecting ear 3 and one fixing groove 21 are provided with marks for alignment and cooperation (not shown in the figure). The marks can be the same color marks or the same or matching pattern marks, which are not specifically limited here.

[0075] As an example, marks can be set on the connecting ear 3 close to the electrical contact 14; correspondingly, matching marks can be set on the fixing groove 21 close to the electrical contact 23. In other embodiments, corresponding marks can be set on each connecting ear 3 and each fixing groove 21 respectively to make the installation posture of the fan core 1 unique.

[0076] In this way, the user can confirm the installation posture of the fan core 1 through the marks, and when operating to install the fan core 1 in the central hole 20 of the fan frame 2, the electrical contact 14 on the fan core 1 and the electrical contact 23 on the inner wall of the fan frame 2 can be automatically aligned and contact each other, and at the same time, the fan core 1 and the fan frame 2 are electrically connected, effectively improving the installation efficiency of the fan core 1.

[0077] Regarding the structure of the fan frame 2, in an embodiment of the present application, please refer to Figure 8 , a foot pad 24 that matches the shape of the corner of the fan frame 2 is provided on the end face of the fan frame 2.

[0078] In this embodiment, the fan frame 2 preferably adopts a quadrilateral frame body. A triangular area is formed on the end face of the fan frame 2 between the outer periphery of the central hole 20 and the four corners of the fan frame 2. A triangular foot pad 24 with a matching shape can be installed in this triangular area to make the whole fan more beautiful. Users can also DIY different styles of foot pads 24. For example, use foot pads 24 of different colors, or DIY patterns or decorations on the foot pads 24, etc., to improve the overall aesthetic feeling of the cooling fan.

[0079] Since on the cooling fan provided by the embodiment of the present application, the fan frame 2 has a fixing groove 21 with an upper opening, so that the connecting ear 3 on the fan core 1 can easily slide in and be fixed. Therefore, the foot pad 24 is likely to block the notch of the fixing groove 21, causing interference. In this regard, in an embodiment of the present application, please refer to Figure 8 , the foot pad 24 has an avoidance hole 241 that is positionally matched with the fixing groove 21. It can be understood here that a notch that is shape-matched with the notch of the fixing groove 21 is formed on the foot pad 24, so as to prevent the foot pad 24 from blocking the fixing groove 21. In this way, the fan core 1 can be smoothly disassembled and assembled on the fan frame 2 without the need to disassemble the foot pad 24.

[0080] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A heat dissipation fan, characterized in that, Comprising: A fan core, including an impeller and a surrounding frame for accommodating the impeller, and connecting ears are provided on the outer periphery of the surrounding frame; A fan frame, having a central hole for accommodating the fan core, and a fixing groove is provided on the inner wall of the fan frame at the central hole, the fixing groove communicates with the central hole and is for the connecting ears to be embedded; A magnetic attraction assembly, respectively arranged on the connecting ears and the fixing grooves of the fan frame, enabling the connecting ears to be magnetically fixed in the fixing grooves.

2. The cooling fan according to claim 1, wherein: The magnetic attraction assembly includes a first magnetic member and a second magnetic member, the first magnetic member is arranged on the connecting ears, the second magnetic member is arranged in the fixing grooves of the fan frame and corresponds to the position of the first magnetic member.

3. The cooling fan according to claim 2, wherein: The connecting ears include a boss extending outward from the outer periphery of the surrounding frame, and an inner cavity for accommodating the first magnetic member is provided in the boss.

4. The cooling fan according to claim 3, wherein: An installation opening is provided on the boss, and the first magnetic member is loaded into the inner cavity of the boss from the installation opening; the connecting ears further include a protective sleeve, and the protective sleeve is sleeved on the boss and covers the installation opening on the boss.

5. The cooling fan according to claim 4, wherein: The protective sleeve is made of a soft rubber material.

6. The cooling fan according to claim 4, wherein: A positioning convex block is further connected between the boss and the outer peripheral surface of the surrounding frame, and a protruding portion protruding on the boss is provided on the positioning convex block; a directional groove is provided on the protective sleeve, and the directional groove is for being engaged with the protruding portion.

7. The cooling fan according to claim 4, wherein: The fixing groove on the fan frame is a semi-circular groove with an upper opening and one side communicating with the central hole, and the shapes of the connecting ears and the protective sleeve are both adapted to the fixing groove.

8. The cooling fan according to claim 2, wherein: A groove is provided on the fan frame within the fixing groove, and the groove is for installing the second magnetic member, and at least a part of the second magnetic member protrudes from the notch of the groove.

9. The cooling fan according to claim 1, wherein: Electric contact terminals for electrical connection are further provided on the inner wall of the fan frame at the central hole, electric contact points for contacting the electric contact terminals are provided on the surrounding frame of the fan core, and the electric contact points are electrically connected to the impeller within the surrounding frame through a cable; A plurality of the connecting ears are provided on the fan core, and the fan frame has the same number of fixing grooves as the number of the connecting ears, and at least one of the connecting ears and one of the fixing grooves are provided with marks for alignment and cooperation.

10. The cooling fan according to any one of claims 1 to 9, characterized in that: Foot pads matching the shape of the corners of the fan frame are provided on the end surface of the fan frame, and avoidance holes matching the position of the fixing grooves are provided on the foot pads.

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