Cooling fan with fan blades convenient to replace

Abstract

The utility model belongs to the technical field of cooling fans, and particularly relates to a cooling fan with fan blades convenient to replace, which comprises a shell and a cooling component. The shell comprises an upper cover and a lower shell; the upper cover is arranged above the lower shell; a magnetic attraction unit used for quick disassembly and assembly and a fool-proof unit used for preventing assembly errors are arranged between the upper cover and the lower shell; the heat dissipation assembly comprises a fan body and a heat dissipation driving part; the heat dissipation driving piece is fixedly arranged in the shell; the fan body is detachably arranged at the output end of the heat dissipation driving piece, and the fan body is rotationally connected with the heat dissipation driving piece. By arranging the magnetic attraction unit, the upper cover and the lower shell can be quickly disassembled and assembled, the tedious process of traditional screw fixing is avoided, a user can easily complete disassembly and assembly without using a tool, and the operation efficiency is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of cooling fan technology, and in particular relates to a cooling fan with easily replaceable fan blades. Background Technology

[0002] Cooling fans, as a key heat dissipation device, are widely used in various electronic devices, computers and electrical products. Their core function is to effectively dissipate heat and cool down, ensuring that these devices can operate stably within a suitable temperature range.

[0003] When the cooling fan starts, the rotation of the fan blades drives the flow of surrounding air, creating a continuous airflow. This airflow not only accelerates the heat exchange between the heat source and the surrounding air, but also carries heat from inside the equipment to the external environment through convection, achieving effective heat dissipation, reducing the operating temperature of the equipment, and extending its service life.

[0004] Currently, existing cooling fans consist of fan blades and a drive motor. The installation of fan blades and drive motors generally relies on screws for fixing. When disassembling, the screws need to be removed one by one, which makes it impossible to quickly fix and disassemble the fan blades. Moreover, the threaded heads are prone to jamming after aging, which makes it impossible for the fan blades to be quickly detached. It requires a lot of force, making it very inconvenient to replace or clean the fan blades. Utility Model Content

[0005] The purpose of this utility model is to provide a cooling fan that facilitates the replacement of fan blades, aiming to solve the technical problems in the prior art where the fan blades and drive motor cannot be quickly fixed and disassembled, and the threaded head is prone to jamming after aging, making it inconvenient to replace or clean the fan blades.

[0006] To achieve the above objectives, this utility model provides a cooling fan with easily replaceable blades, comprising a housing and a heat dissipation assembly; the housing includes an upper cover and a lower cover; the upper cover is disposed above the lower cover; a magnetic suction unit for quick disassembly and assembly and a foolproof unit for preventing assembly errors are provided between the upper cover and the lower cover; the heat dissipation assembly includes a fan body and a heat dissipation drive component; the heat dissipation drive component is fixedly disposed within the housing; the fan body is detachably mounted on the output end of the heat dissipation drive component, and the fan body is rotatably connected to the heat dissipation drive component.

[0007] As further explained, the magnetic attraction unit includes two sets of first magnets and two sets of second magnets; the two sets of first magnets are arranged diagonally at the bottom of the upper cover; the two sets of second magnets are arranged diagonally at the top of the lower shell; each set of first magnets and each set of second magnets are arranged in a one-to-one correspondence, and the first magnets and the second magnets are attracted to each other.

[0008] As further explained, the error prevention unit includes a first positioning post and a second positioning post; the first positioning post and the second positioning post are diagonally located at the bottom end of the upper cover; the top end of the lower shell is provided with a first positioning hole and a second positioning hole corresponding to the first positioning post and the second positioning post, respectively; the outer diameter of the first positioning post is larger than the outer diameter of the second positioning post.

[0009] As further explained, a snap-fit ​​assembly is also included between the upper cover and the outer shell; the snap-fit ​​assembly includes a snap-fit ​​block and a snap-fit ​​seat; the snap-fit ​​block is located on one side of the upper cover; the snap-fit ​​seat is located on one side of the lower shell and is disposed on the same side as the snap-fit ​​block; the snap-fit ​​block can enter or disengage from the snap-fit ​​seat to fix or remove the upper cover from the lower shell.

[0010] As a further explanation, the bottom end of the snap-fit ​​block is provided with a downwardly extending elastic portion; the end of the elastic portion is provided with a horizontally outward extending snap-fit ​​portion, and the elastic portion and the snap-fit ​​portion form a "J" shaped structure.

[0011] The top of the snap-fit ​​base is provided with a snap-fit ​​groove for the elastic part to enter, and a gap is maintained between the snap-fit ​​groove and the elastic part; the end of the snap-fit ​​groove is provided with a fixing part for fixing the snap-fit ​​part; a button connected to the fixing part is provided on the outside of the snap-fit ​​base.

[0012] As further explained, the fan body includes a fan cover, a fan base, and multiple sets of fan blades; the fan base is located on the output end of the heat dissipation drive, and an elastic block for tight connection is provided between the fan base and the output end of the heat dissipation drive; the fan cover is detachably connected to the fan base; one end of the fan blade is provided with a rotating shaft that is inserted into the outside of the fan base.

[0013] As a further explanation, the fan base is provided with multiple sets of outwardly extending fixing blocks; the inner wall of the fan cover is provided with multiple sets of fixing grooves that engage with the fixing blocks, and a locking groove is provided horizontally on one side of the fixing groove; when the fan base and the fan cover are locked, the fixing block enters to the end of the fixing groove, and when the fan cover is rotated, the fixing block moves horizontally along the locking groove to the end of the locking groove.

[0014] As further explained, the rotating shaft is provided with a rotation damper, which is located on the outer wall of the fan cover; the rotating shaft is also provided with an outwardly extending connecting plate, which is located outside the rotation damper, and the connecting plate is provided with a locking screw; the inner wall of the fan cover is provided with an adjustment groove for adjusting the angle of the rotating shaft; one end of the locking screw passes through the adjustment groove and is threaded to the connecting plate, and the other end can abut against or move away from the inner wall of the fan cover.

[0015] As a further explanation, it also includes heat dissipation fins; the heat dissipation fins are disposed at the bottom end of the lower shell; connecting platforms extend outward from both sides of the bottom end of the lower shell; a quick-release assembly is provided between the heat dissipation fins and the connecting platforms; the quick-release assembly includes an L-shaped rod and a fixing rod; one end of the L-shaped rod is fixed to one side of the heat dissipation fins, and the other end spans across the top of the connecting platform, and a spring for resetting is provided between the L-shaped rod and the connecting platform; an upwardly protruding protrusion is provided on the other end of the L-shaped rod; the fixing rod is rotatably disposed on the other side of the heat dissipation fins, and the top end of the fixing rod is provided with a insertion hole for inserting the L-shaped rod.

[0016] The cooling fan with easily replaceable blades provided in this embodiment of the utility model has at least one of the following technical effects:

[0017] 1. By setting up a magnetic unit, quick assembly and disassembly between the upper cover and the lower shell are achieved, avoiding the tedious process of traditional screw fixing. Users can easily complete the assembly and disassembly without the use of tools, which greatly improves the operating efficiency.

[0018] 2. The fan body and heat dissipation drive are designed to be detachable, and a tight connection is achieved through elastic blocks. This allows the fan blades to be easily removed from the heat dissipation drive without having to remove screws one by one as in traditional methods. At the same time, the use of elastic blocks ensures a stable connection between the fan blades and the drive, preventing performance degradation due to loosening. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a cooling fan with easily replaceable blades, provided as an embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the internal structure of the heat dissipation component provided in an embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the structure of the fan cover provided in an embodiment of the present utility model.

[0023] Figure 4 for Figure 1 An enlarged diagram of A in the diagram.

[0024] The following are the labeling elements in the figure:

[0025] 10. Top cover; 11. Bottom shell; 111. Connecting platform; 20. Heat dissipation assembly; 211. Fan cover; 211a. Adjustment slot; 212. Fan base; 213. Fan blade; 214. Shaft; 214a. Connecting plate; 215. Fixing block; 216. Fixing slot; 217. Locking slot; 218. Rotary damper; 219. Locking screw; 22. Heat dissipation drive component; 30. Magnetic suction unit; 32. Second magnet; 41. First positioning hole; 42. Second positioning hole; 50. Snap-fit ​​block; 501. Elastic part; 502. Snap-fit ​​part; 51. Snap-fit ​​seat; 511. Snap-fit ​​slot; 512. Fixing part; 513. Button; 60. Heat dissipation fins; 61. L-shaped rod; 611. Protrusion; 62. Fixing rod. Detailed Implementation

[0026] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0027] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model 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 utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0030] In one embodiment of this utility model, such as Figures 1-4 As shown, a cooling fan with easily replaceable blades is provided, including a housing and a heat dissipation assembly 20. The housing includes an upper cover 10 and a lower cover 11. The upper cover 10 is located above the lower cover 11. A magnetic suction unit 30 for quick assembly and disassembly and a foolproof unit 40 for preventing assembly errors are provided between the upper cover 10 and the lower cover 11. The heat dissipation assembly 20 includes a fan body and a heat dissipation drive component 22. The heat dissipation drive component 22 is fixedly disposed within the housing. The fan body is detachably mounted on the output end of the heat dissipation drive component 22, and the fan body is rotatably connected to the heat dissipation drive component 22.

[0031] By setting up the magnetic unit 30, quick assembly and disassembly between the upper cover 10 and the lower shell 11 are achieved, avoiding the cumbersome process of traditional screw fixing. Users can easily complete the assembly and disassembly without the need for tools, which greatly improves the operating efficiency.

[0032] By employing a detachable design between the fan body and the heat dissipation drive component 22, and achieving a tight connection through elastic blocks, the fan blade 213 can be easily removed from the heat dissipation drive component 22 without having to remove screws one by one as in the traditional method. At the same time, the use of elastic blocks also ensures a stable connection between the fan blade 213 and the drive component, avoiding performance degradation caused by loosening.

[0033] Furthermore, the magnetic unit 30 includes two sets of first magnets 31 and two sets of second magnets 32. The two sets of first magnets 31 are diagonally arranged at the bottom of the upper cover 10. The two sets of second magnets 32 are diagonally arranged at the top of the lower shell 11. Each set of first magnets 31 and each set of second magnets 32 are arranged in a one-to-one correspondence, and the first magnets 31 and second magnets 32 are attracted to each other. Through the setting of the magnetic unit 30, quick assembly and disassembly between the upper cover 10 and the lower shell 11 are realized, avoiding the cumbersome process of traditional screw fixing. Users can easily complete the assembly and disassembly without the use of tools, greatly improving the operating efficiency.

[0034] Furthermore, the foolproof unit 40 includes a first positioning post and a second positioning post. The first positioning post and the second positioning post are diagonally located at the bottom end of the upper cover 10. The top end of the lower shell 11 is provided with a first positioning hole 41 and a second positioning hole 42 corresponding to the first positioning post and the second positioning post, respectively. The outer diameter of the first positioning post is larger than the outer diameter of the second positioning post. By setting up the foolproof unit 40, assembly errors are effectively prevented, ensuring that the upper cover 10 and the lower shell 11 can be correctly aligned during assembly.

[0035] Furthermore, a snap-fit ​​assembly is also included between the upper cover 10 and the outer shell. The snap-fit ​​assembly includes a snap-fit ​​block 50 and a snap-fit ​​base 51. The snap-fit ​​block 50 is located on one side of the upper cover 10. The snap-fit ​​base 51 is located on one side of the lower shell 11 and is located on the same side as the snap-fit ​​block 50. The snap-fit ​​block 50 can enter or disengage from the snap-fit ​​base 51 to fix or remove the upper cover 10 from the lower shell 11. By setting up the snap-fit ​​assembly, an additional fixing method is added on the basis of the magnetic attraction unit 30, making the assembly and disassembly process more stable, preventing the upper cover 10 and the lower shell 11 from separating from each other under large impacts, and improving the connection stability between the upper cover 10 and the lower shell 11.

[0036] Furthermore, the bottom end of the snap-fit ​​block 50 is provided with a downwardly extending elastic portion 501. The end of the elastic portion 501 is provided with a horizontally outward extending snap-fit ​​portion 502, forming a "J"-shaped structure between the elastic portion 501 and the snap-fit ​​portion 502. In this embodiment, the elastic portion 501 is a resilient metal sheet, such as an iron sheet, allowing the elastic portion 501 to have a certain degree of elastic recovery, thus ensuring a stable connection between the snap-fit ​​block 50 and the snap-fit ​​groove 511.

[0037] The top of the snap-fit ​​base 51 is provided with a snap-fit ​​groove 511 for the elastic part 501 to enter, and a gap is maintained between the snap-fit ​​groove 511 and the elastic part 501. The end of the snap-fit ​​groove 511 is provided with a fixing part 512 for fixing the snap-fit ​​part 502. A button 513 communicating with the fixing part 512 is provided on the outside of the snap-fit ​​base 51. Through the "J"-shaped structure at the bottom of the snap-fit ​​block 50 and the design of the snap-fit ​​groove 511 and the fixing part 512 on the snap-fit ​​base 51, the snap-fit ​​process is smoother and more stable, the snap-fit ​​process is optimized, and the disassembly and assembly are easier and less likely to fall off, further improving the durability and stability of the product.

[0038] Furthermore, the fan body includes a fan cover 211, a fan base 212, and multiple sets of fan blades 213. The fan base 212 is located on the output end of the heat dissipation drive unit 22, and an elastic block for tight connection is provided between the fan base 212 and the output end of the heat dissipation drive unit 22. The fan cover 211 is detachably connected to the fan base 212. One end of the fan blade 213 is provided with a rotating shaft 214 that inserts into the outside of the fan base 212. The fan body is tightly connected to the heat dissipation drive unit 22 through the elastic block on the fan base 212. The detachable connection of the fan cover 211 to the fan base 212 avoids the cumbersome process of screw fixing, allowing the fan blades 213 to be easily removed from the heat dissipation drive unit 22 for cleaning or replacement.

[0039] Furthermore, the fan base 212 is provided with multiple sets of outwardly extending fixing blocks 215. The inner wall of the fan cover 211 is provided with multiple sets of fixing grooves 216 that engage with the fixing blocks 215, and a locking groove 217 is provided horizontally on one side of the fixing groove 216. When the fan base 212 and the fan cover 211 are locked, the fixing blocks 215 enter to the end of the fixing groove 216. By rotating the fan cover 211, the fixing blocks 215 move horizontally along the locking groove 217 to the end of the locking groove 217, thus achieving a stable connection between the fan cover 211 and the fan base 212 and preventing the fan blades 213 from experiencing performance degradation or damage due to loosening during use.

[0040] Furthermore, a rotation damper 218 is provided on the rotating shaft 214, located on the outer wall of the fan cover 211. An outwardly extending connecting plate 214a is also provided on the rotating shaft 214, located outside the rotation damper 218, and a locking screw 219 is provided on the connecting plate 214a. An adjusting groove 211a for adjusting the angle of the rotating shaft 214 is provided on the inner wall of the fan cover 211. One end of the locking screw 219 passes through the adjusting groove 211a and is threaded onto the connecting plate 214a, while the other end can abut against or move away from the inner wall of the fan cover 211. By setting the rotary damper 218, the user can easily adjust the angle of the fan blade 213 as needed, and under the action of the rotary damper 218, the fan blade 213 is prevented from rotating unexpectedly. Furthermore, the locking screw 219 passes through the adjustment groove 211a and is threadedly connected and fixed to the connecting plate 214a, further ensuring that the fan blade 213 can always maintain the required tilt angle after the angle is adjusted.

[0041] Furthermore, it also includes heat dissipation fins 60. The heat dissipation fins 60 are located at the bottom end of the lower housing 11. Connecting platforms 111 extend outward from both sides of the bottom end of the lower housing 11. A quick-release assembly is provided between the heat dissipation fins 60 and the connecting platforms 111. The quick-release assembly includes an L-shaped rod 61 and a fixing rod 62. One end of the L-shaped rod 61 is fixed to one side of the heat dissipation fins 60, and the other end spans across the connecting platform 111, with a spring for resetting between it and the connecting platform 111. An upwardly protruding protrusion 611 is provided on the other end of the L-shaped rod 61. The fixing rod 62 is rotatably located on the other side of the heat dissipation fins 60, and its top end has a insertion hole for inserting the L-shaped rod 61. By providing the quick-release assembly, the heat dissipation fins 60 can be easily removed from the lower housing 11 for cleaning or replacement. Furthermore, by providing the heat dissipation fins 60, the cooling effect of the cooling fan is further improved.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cooling fan with easily replaceable blades, characterized in that, include: The housing includes an upper cover and a lower cover; the upper cover is located above the lower cover; a magnetic suction unit for quick assembly and disassembly and a foolproof unit for preventing assembly errors are provided between the upper cover and the lower cover; A heat dissipation assembly includes a fan body and a heat dissipation drive component; the heat dissipation drive component is fixedly disposed inside the housing; the fan body is detachably disposed on the output end of the heat dissipation drive component, and the fan body is rotatably connected to the heat dissipation drive component.

2. The cooling fan with easily replaceable blades according to claim 1, characterized in that: The magnetic attraction unit includes two sets of first magnets and two sets of second magnets; the two sets of first magnets are arranged diagonally at the bottom of the upper cover; the two sets of second magnets are arranged diagonally at the top of the lower shell; each set of first magnets and each set of second magnets are arranged in a one-to-one correspondence, and the first magnets and the second magnets are attracted to each other.

3. The cooling fan with easily replaceable blades according to claim 1, characterized in that: The error prevention unit includes a first positioning post and a second positioning post; the first positioning post and the second positioning post are diagonally located at the bottom end of the upper cover; the top end of the lower shell is provided with a first positioning hole and a second positioning hole corresponding to the first positioning post and the second positioning post, respectively; the outer diameter of the first positioning post is larger than the outer diameter of the second positioning post.

4. The cooling fan with easily replaceable blades according to claim 2 or 3, characterized in that: The upper cover and the outer shell also include a snap-fit ​​assembly; the snap-fit ​​assembly includes a snap-fit ​​block and a snap-fit ​​seat; the snap-fit ​​block is located on one side of the upper cover; the snap-fit ​​seat is located on one side of the lower shell and is located on the same side as the snap-fit ​​block; the snap-fit ​​block can enter or disengage from the snap-fit ​​seat to fix or remove the upper cover from the lower shell.

5. The cooling fan with easily replaceable blades according to claim 4, characterized in that: The bottom end of the snap-fit ​​block is provided with a downwardly extending elastic portion; the end of the elastic portion is provided with a horizontally outwardly extending snap-fit ​​portion, and the elastic portion and the snap-fit ​​portion form a "J" shaped structure. The top of the snap-fit ​​base is provided with a snap-fit ​​groove for the elastic part to enter, and a gap is maintained between the snap-fit ​​groove and the elastic part; the end of the snap-fit ​​groove is provided with a fixing part for fixing the snap-fit ​​part; a button connected to the fixing part is provided on the outside of the snap-fit ​​base.

6. The cooling fan with easily replaceable blades according to claim 1, characterized in that: The fan body includes a fan cover, a fan base, and multiple sets of fan blades; the fan base is located on the output end of the heat dissipation drive, and an elastic block for tight connection is provided between the fan base and the output end of the heat dissipation drive; the fan cover is detachably connected to the fan base; one end of the fan blade is provided with a rotating shaft that is inserted into the outside of the fan base.

7. The cooling fan with easily replaceable blades according to claim 6, characterized in that: The fan base is provided with multiple sets of outwardly extending fixing blocks; the inner wall of the fan cover is provided with multiple sets of fixing grooves that engage with the fixing blocks, and a locking groove is provided horizontally on one side of the fixing groove; when the fan base and the fan cover are locked, the fixing block enters to the end of the fixing groove, and when the fan cover is rotated, the fixing block moves horizontally along the locking groove to the end of the locking groove.

8. The cooling fan with easily replaceable blades according to claim 7, characterized in that: A rotation damper is provided on the rotating shaft, and the rotation damper is located on the outer wall of the fan cover; the rotating shaft is also provided with an outwardly extending connecting plate, which is located outside the rotation damper, and a locking screw is provided on the connecting plate; an adjustment groove for adjusting the angle of the rotating shaft is provided on the inner wall of the fan cover; one end of the locking screw passes through the adjustment groove and is threaded to the connecting plate, and the other end can abut against or move away from the inner wall of the fan cover.

9. The cooling fan with easily replaceable blades according to claim 1, characterized in that: It also includes heat dissipation fins; the heat dissipation fins are located at the bottom end of the lower shell; connecting platforms extend outward from both sides of the bottom end of the lower shell; a quick-release assembly is provided between the heat dissipation fins and the connecting platforms; the quick-release assembly includes an L-shaped rod and a fixing rod; one end of the L-shaped rod is fixed to one side of the heat dissipation fins, and the other end spans across the top of the connecting platform, and a spring for resetting is provided between the L-shaped rod and the connecting platform; an upwardly protruding protrusion is provided on the other end of the L-shaped rod; the fixing rod is rotatably located on the other side of the heat dissipation fins, and the top end of the fixing rod is provided with a insertion hole for inserting the L-shaped rod.

Images