Fan assembly and 3D printing apparatus

Abstract

A fan assembly (100), the fan assembly comprising a mounting base (1), a fan (2) and a connecting member (3), the connecting member being provided with a positioning structure (31), the positioning structure being used for cooperating with the mounting base and the fan so as to fix the fan and the mounting base to each other, and the connecting member being made of an elastic material. By configuring the connecting member connecting the fan and the mounting base to be made of an elastic material, a flexible buffer structure is formed between the fan and the mounting base, thereby attenuating the vibration energy transmitted from the fan to the mounting base, reducing the impact of the vibration of the fan on the mounting base, and improving the quietness of the fan assembly during operation. Further provided is a 3D printing apparatus.

Description

Wind turbine components and 3D printing equipment

[0001] This application claims priority to Chinese Patent Application No. 2025203589789, filed on February 28, 2025, entitled "Wind Turbine Components and 3D Printing Equipment", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of 3D printing technology, specifically to a fan component and a 3D printing device. Background Technology

[0003] 3D printing technology, as a rapid prototyping technology, has shown great application potential in many fields in recent years. To ensure the printing effect of 3D printing equipment, a blower assembly is usually installed inside the 3D printing equipment.

[0004] The fan assembly is used to create airflow paths inside the 3D printing equipment to drive airflow to circulate within the 3D printing equipment or to exhaust exhaust gas outside the 3D printing equipment.

[0005] The fan assembly includes a fan and a mounting base for mounting the fan. During operation, the fan's vibration is transmitted to the entire mounting base through the connection between the fan and the mounting base, which causes the mounting base and its surrounding components to resonate and generate noise. Summary of the Invention

[0006] The purpose of this application is to provide a fan assembly and a 3D printing device, which aims to solve the problem of high vibration and noise in fans in related technologies.

[0007] To achieve the objectives of this application, in a first aspect, this application provides a fan assembly, the fan assembly including a mounting base, a fan, and a connector, the connector being provided with a positioning structure, the positioning structure being used to cooperate with the mounting base and the fan to fix the fan and the mounting base to each other;

[0008] The connector is made of an elastic material.

[0009] In one possible implementation, the mounting base is provided with a positioning hole, the fan is provided with a mounting through hole, and the positioning hole and the mounting through hole are aligned with each other;

[0010] The positioning structure includes a connecting shaft and a first collar, wherein the connecting shaft passes through the positioning hole and the mounting through hole;

[0011] The first collar is disposed on the side of the mounting hole away from the mounting base, and the cross-sectional area of ​​the first collar gradually decreases along the direction from the mounting base to the fan.

[0012] In one possible implementation, the first collar is tapered, and the cross-sectional area of ​​the tapered surface gradually decreases along the direction from the mounting base to the fan, wherein the larger end of the tapered surface of the first collar contacts the side of the fan away from the mounting base.

[0013] In one possible implementation, the positioning structure further includes a second collar, which is connected to the end of the connecting shaft opposite to the first collar, and the second collar is in contact with the side of the mounting base opposite to the fan.

[0014] In one possible implementation, the mounting base is provided with a positioning hole, and the fan is provided with a mounting through hole, wherein the positioning hole and the mounting through hole are aligned with each other;

[0015] The positioning structure includes a connecting shaft, a first collar, and a second collar. The connecting shaft passes through the positioning hole and the mounting through hole. The first collar contacts the side of the mounting base away from the fan, and the second collar contacts the side of the fan away from the mounting base.

[0016] In one possible implementation, either the mounting base or the fan is provided with a fixing element;

[0017] The fastener has a fixing space, which is aligned with the positioning hole and the mounting through hole. The size of the fixing space is larger than the diameter of the positioning hole or the mounting through hole. The second collar is disposed within the fixing space.

[0018] The diameter of the second collar is larger than the diameter of the positioning hole or the mounting through hole, and the connecting shaft is adapted to the diameter of the positioning hole or the mounting through hole.

[0019] In one possible implementation, the outer edge of the fastener has a notch that communicates with the fixing space.

[0020] In one possible implementation, the fan assembly includes multiple connectors, and the mounting base or the fan is provided with multiple fasteners, with each connector corresponding to one of the fasteners;

[0021] Each of the fasteners has a notch on its outer edge, and at least two of the fasteners have notches with different opening orientations.

[0022] In one possible implementation, the connector further includes an end shaft located on the side of the first collar facing away from the connecting shaft, and the length of the end shaft is A, satisfying the relationship: 5mm≤A≤30mm.

[0023] In one possible implementation, the connector further includes a third collar connected to the connecting shaft, the third collar having a first end face and a second end face disposed opposite to each other along the axial direction of the connector;

[0024] The first end face is in contact with the side of the mounting base facing the fan, and the second end face is in contact with the side of the fan facing the mounting base.

[0025] In one possible implementation, the fan assembly further includes a shock-absorbing sleeve, which is at least partially fitted around the fan along its outer periphery.

[0026] The shock-absorbing sleeve is filled between the fan and the mounting base.

[0027] Secondly, this application also proposes a 3D printing device, which includes a fan assembly. The fan assembly includes a mounting base, a fan, and a connector. The connector is provided with a positioning structure, which is used to cooperate with the mounting base and the fan to fix the fan and the mounting base to each other.

[0028] The connector is made of an elastic material.

[0029] This application creates a flexible buffer structure between the fan and the mounting base by using an elastic material for the connector connecting the fan and the mounting base. This reduces the vibration energy transmitted from the fan to the mounting base, decreases the impact of fan vibration on the mounting base, and improves the quietness of the fan assembly operation. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, 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 application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 is a schematic diagram of an embodiment of the 3D printing equipment provided in this application;

[0032] Figure 2 is an assembly schematic diagram of an embodiment of the connection between the fan and the mounting base in Figure 1;

[0033] Figure 3 is a magnified view of part A in Figure 2;

[0034] Figure 4 is an assembly diagram of another embodiment of the connection between the fan and the mounting base in Figure 1;

[0035] Figure 5 is a magnified view of part B in Figure 4;

[0036] Figure 6 is a schematic diagram of the connector in Figure 2;

[0037] Figure 7 is a schematic diagram of the mounting base in Figure 2;

[0038] Figure 8 is a schematic diagram of the assembly of the fan, mounting base and shock absorber sleeve in Figure 1;

[0039] Figure 9 is a schematic diagram of the structure of the shock-absorbing sleeve in Figure 8.

[0040] Explanation of reference numerals in the attached drawings: 1000-3D printing equipment; 100-fan assembly; 1-mounting base, 11-positioning hole, 12-fixing component, 121-fixing space, 122-notch; 2-fan, 21-mounting through hole; 3-connector, 31-positioning structure, 311-connecting shaft, 312-first collar, 313-second collar, 32-third collar, 33-end shaft; 4-shock-absorbing sleeve; 200-housing, 300-tool head, 400-heated bed. Detailed Implementation

[0041] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or it can be in a middle component. When a component is said to be "connected" to another component, it can be directly connected to the other component or it may be in a middle component.

[0043] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0044] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0045] Referring to Figure 1, this application provides a 3D printing device 1000. In some embodiments, the 3D printing device 1000 includes a housing 200, a tool head 300, a heated bed 400, and a fan assembly 100. The housing 200 serves as the main structural component of the 3D printing device 1000, supporting and connecting the various component assemblies of the 3D printing device 1000. The housing 200 has a working cavity for 3D printing, within which the heated bed 400 and the tool head 300 are movably disposed.

[0046] The tool head 300 is used to heat, extrude, and accurately deposit printing material onto the heated bed 400 to build a three-dimensional model. In one embodiment of this application, the tool head 300 may include a nozzle and a heating element, the heating element being used to heat the printing material to a molten state, thereby ensuring that the printing material can be smoothly extruded and uniformly deposited onto the heated bed 400. The extruder is used to precisely extrude the molten printing material through the nozzle and deposit it layer by layer onto the heated bed 400 along a predetermined path to form a three-dimensional model.

[0047] The heated bed 400 has a bearing surface facing the tool head 300. The bearing surface is used to support and heat the material model extruded by the tool head 300, thereby enhancing the adhesion of the first layer of material and providing a stable foundation for subsequent printing. At the same time, the heated bed 400 can also slow down the cooling rate of the printed model, reduce the stress caused by the temperature gradient within the printed model, and reduce the risk of deformation of the printed model.

[0048] The fan assembly 100 is used to form an airflow path inside the 3D printing equipment 1000 to drive the airflow to circulate in the working chamber, thereby cooperating with the heating element inside the 3D printing equipment 1000 to heat the working chamber, or to discharge the high temperature and waste generated during the printing process of the 3D printing equipment 1000 to the outside, so as to maintain the normal operation of the 3D printing equipment 1000.

[0049] Please refer to Figure 2. In some embodiments, the fan assembly 100 includes a mounting base 1, a fan 2, and a connector 3. The mounting base 1 serves as the main structure of the fan assembly 100 and is used to support and connect the various parts of the fan assembly 100.

[0050] The fan 2 is fixedly connected to the mounting base 1 via the connector 3. The fan 2 can rotate its blades to create an airflow path inside the 3D printing equipment 1000, thereby driving the airflow to circulate within the 3D printing equipment 1000 or expelling the airflow from the 3D printing equipment 1000 outside the working chamber. The fan 2 can be a centrifugal fan or an axial fan; this application does not limit the choice. In some embodiments, an axial fan 2 is used. Compared to other fans 2, the axial fan 2 has a larger exhaust volume for the same size or power, effectively improving the driving effect of the fan 2 on the airflow in the working chamber.

[0051] During operation, the rotation of the fan blades of the fan 2 will cause the fan 2 to vibrate, and the vibration will be transmitted to the mounting base 1 through the connector 3, which will cause the mounting base 1 and other components mounted on the mounting base 1 to resonate and generate noise. In some embodiments, as consumer-grade 3D printers are often set up in residences, the printing noise will have a significant impact on the living environment.

[0052] To address the aforementioned issues, in this application, the connector 3 is made of an elastic material. This elastic material can be rubber, silicone, or other materials with good elasticity and shock absorption properties, such as polyurethane. This application does not impose any limitations on this. By making the connector 3 connecting the fan 2 and the mounting base 1 an elastic material, a flexible buffer structure is formed between the fan 2 and the mounting base 1, thereby attenuating the vibration energy transmitted from the fan 2 to the mounting base 1, reducing the impact of the fan 2's vibration on the mounting base 1, and improving the quietness of the fan assembly 100 operation.

[0053] Please refer to Figure 3. To facilitate the installation of the fan 2 on the mounting base 1, the connector 3 can be either a threaded structure or a snap-fit ​​structure; this application does not impose any limitation on this. In some embodiments, the connector 3 includes a positioning hole 11 on the mounting base 1 and a mounting through hole 21 on the fan 2. The positioning hole 11 and the mounting through hole 21 correspond one-to-one and are aligned with each other. The number of positioning holes 11 and mounting through holes 21 can be one or more; this application does not impose any limitation on this.

[0054] The positioning structure 31 includes a connecting shaft 311, which passes through the positioning hole 11 and the mounting through hole 21. The connecting shaft 311 is interference-fitted with the positioning hole 11 and the mounting through hole 21, so that the fan 2 and the mounting base 1 are connected to each other.

[0055] Please refer to Figures 4 to 6. To improve the stability of the connection of the connector 3 on the fan 2 side, in some embodiments, the positioning structure further includes a first collar 312. The first collar 312 is connected to the connecting shaft 311. The first collar 312 is disposed on the side of the mounting through hole 21 away from the mounting base 1, and the cross-sectional area of ​​the first collar 312 gradually decreases along the direction from the mounting base 1 to the fan 2. In some embodiments, the connecting shaft 311 no longer needs to be connected to the mounting through hole 21 through an interference fit, but only needs to be adapted to the diameter of the mounting through hole 21 (i.e., the shaft diameter of the connecting shaft 311 can be equal to or slightly smaller than the diameter of the mounting through hole 21), thereby reducing the installation difficulty of the connector 3 in the mounting through hole 21 and improving the installation efficiency of the connector 3 and the fan 2. On the other hand, the setting of the first collar 312 can also prevent the connecting shaft 311 from coming out of the mounting through hole 21, improving the stability of the connection of the connector 3 on the fan 2 side.

[0056] Compared to a snap-fit ​​structure, the structure using connecting shaft 311 and first collar 312 is simpler, and the manufacturing cost of connector 3 is lower. Compared to a threaded structure, connecting shaft 311 and first collar 312 eliminate the need for tapping threaded holes at the connection between fan 2 and mounting base 1. The connection between fan 2 and mounting base 1 does not require reserving plate thickness for tapping threaded holes in the manufacturing process, allowing for a thinner design. This reduces the thickness of fan 2 and mounting base 1, reduces the thickness of fan assembly 100, and improves the space utilization of fan assembly 100 within the 3D printing equipment 1000.

[0057] In some embodiments, the first collar 312 is provided with a conical surface, and the cross-sectional area of ​​the conical surface gradually decreases along the direction from the mounting base 1 to the fan 2. This reduces the resistance of the connector 3 when it is inserted into the positioning hole 11 and the mounting through hole 21 from the mounting base 1 to the fan 2, reduces the assembly difficulty of the connector 3 with the fan 2 and the mounting base 1, and improves the assembly efficiency of the connector 3, the fan 2 and the mounting base 1.

[0058] In some embodiments, the large end of the conical surface of the first collar 312 contacts the side of the fan 2 away from the mounting base 1, thereby reducing the activity space of the fan 2 on the side away from the mounting base 1, reducing the installation gap between the fan 2 and the mounting base 1, and improving the stability of the connection between the fan 2 and the mounting base 1.

[0059] To improve the stability of the connection of the connector 3 on the mounting base 1 side, in some embodiments, the positioning structure 31 further includes a second collar 313. The second collar 313 is connected to the end of the connecting shaft 311 opposite to the first collar 312, and the second collar 313 contacts the side of the mounting base 1 opposite to the fan 2. The shaft diameter of the second collar 313 is larger than the diameter of the positioning hole 11 or the mounting through hole 21. With this configuration, in some embodiments, the connecting shaft 311 no longer needs to be connected to the positioning hole 11 through an interference fit, but only needs to be adapted to the diameter of the positioning hole 11 (i.e., the shaft diameter of the connecting shaft 311 can be equal to or slightly smaller than the diameter of the positioning hole 11), thereby reducing the installation difficulty of the connector 3 in the positioning hole 11 and improving the installation efficiency of the connector 3 and the mounting base 1. On the other hand, the second collar 313 can also reduce the possibility of the connecting shaft 311 coming out of the positioning hole 11, improving the stability of the connection of the connector 3 on the mounting base 1 side.

[0060] Understandably, in some other embodiments, while the connecting shaft 311 is interference-fitted with the positioning hole 11, a second collar 313 may be used to reduce the possibility of the connecting shaft 311 coming out of the positioning hole 11 and improve the stability of the connection of the connector 3 on the mounting base 1 side.

[0061] Referring to Figures 5 and 7, in some embodiments, the mounting base 1 is provided with fixing members 12, the number of which corresponds one-to-one with the number of positioning holes 11 and mounting through holes 21. The fixing members 12 are provided with fixing spaces 121, which are aligned with the positioning holes 11 and mounting through holes 21. The size of the fixing spaces 121 is larger than the diameter of the positioning holes 11 or mounting through holes 21. A second collar 313 is disposed within the fixing spaces 121. This increases the contact area between the second collar 313 and the mounting base 1, improving the stability of the connection of the connector 3 on one side of the mounting base 1.

[0062] In some embodiments, the aperture of the fixing space 121 is slightly larger than the ring diameter of the second collar 313, and the second collar 313 is interference-fitted into the fixing space 121. This prevents the second collar 313 from coming out of the fixing space 121 and improves the stability of the connector 3 within the fixing space 121. To facilitate the installation of the second collar 313 within the fixing space 121, the fixing member 12 is also provided with a notch 122, which communicates with the fixing space 121. In actual operation, the assembler can use compression to cause the second collar 313 to undergo elastic deformation and enter the notch 122, and then enter the fixing space 121 through the notch 122, thereby completing the installation of the second collar 313 within the fixing space 121. Compared with other installation methods, the notch 122 effectively reduces the resistance of the second collar 313 entering the fixing space 121, reduces the installation difficulty of the connector 3 and the mounting base 1, and improves the installation efficiency of the connector 3 and the mounting base 1.

[0063] Understandably, while the notch 122 improves the installation efficiency of the connector 3 and the mounting base 1, if the fan 2 vibrates along the opening direction of the notch 122, the second collar 313 may also detach from the fixed space 121 along the direction of the notch 122. To solve this problem, in some embodiments, the mounting base 1 or the fan 2 is provided with multiple fasteners 12, and the connector 3 is provided in a one-to-one correspondence with each fastener 12. The outer edge of each fastener 12 is provided with the notch 122, and at least two of the fasteners 12 have different opening orientations for their notches 122. This prevents all second collars 313 from detaching from the notch 122 when the fan vibrates along a certain notch 122 direction, increases the possibility of the connector 3 detaching from the fixed space, and improves the stability of the installation of the connector 3 and the fastener 12.

[0064] Referring to Figures 3 and 5, in some embodiments, the connector 3 further includes a third collar 32, which is connected to the connecting shaft 311. The third collar 32 has a first end face and a second end face that are arranged opposite to each other along the axial direction of the connector 3. The first end face contacts the side of the mounting base 1 facing the fan 2, and the second end face contacts the side of the fan 2 facing the mounting base 1. In this way, a buffer is formed between the fan 2 and the mounting base 1, thereby attenuating the vibration energy transmitted from the fan 2 to the mounting base 1, reducing the impact of the fan 2 vibration on the mounting base 1, and improving the quietness of the operation of the fan assembly 100.

[0065] In some embodiments, the connector 3 further includes an end shaft 33, which is located on the side of the first collar 312 facing away from the connecting shaft 311. The length of the end shaft 33 is A, satisfying the relationship: 5mm≤A≤30mm. The end shaft 33 is used to provide leverage for the installation of the connector 3 in the positioning hole 11 and the mounting through hole 21. The operator can first pass the end shaft 33 through the positioning hole 11 and the mounting through hole 21, and then pull the first collar 312 through the positioning hole 11 and the mounting through hole 21 by holding the end shaft 33, thereby realizing the connection of the connector 3, the mounting base 1 and the fan 2, reducing the installation difficulty of the connector 3, the mounting base 1 and the fan 2, and improving the installation efficiency of the connector 3, the mounting base 1 and the fan 2.

[0066] In some embodiments, besides using the mounting base as the mounting reference to mount the fan, the fan can also be used as the mounting reference to mount the mounting base onto the fan. In this case, the positioning structure includes a connecting shaft, a first collar, and a second collar. The connecting shaft passes through a positioning hole and a mounting through hole. The first collar contacts the side of the mounting base away from the fan, thus mounting the mounting base onto the fan. Simultaneously, the second collar contacts the side of the fan away from the mounting base, thereby preventing the connecting shaft from dislodging from the mounting through hole and improving the stability of the connection between the connector and the mounting base and the fan.

[0067] In conjunction with the above embodiments, to improve the installation efficiency of the connector, fan, and mounting base, in some embodiments, the first collar is tapered, and the cross-sectional area of ​​the tapered surface gradually decreases along the direction from the fan to the mounting base. This reduces the resistance of the connector when inserted into the positioning hole and mounting through hole from the fan to the mounting base, lowers the assembly difficulty of the connector with the fan and mounting base, and improves the assembly efficiency of the connector, fan, and mounting base.

[0068] In embodiments where the mounting base serves as the installation reference, to improve the stability of the connection between the connector and the fan, in some embodiments, the fan is equipped with fixing components, the number of which corresponds one-to-one with the number of positioning holes and mounting through holes. Each fixing component has a fixing space aligned with the positioning holes and mounting through holes, and the size of the fixing space is larger than the diameter of the positioning holes or mounting through holes; a second collar is disposed within the fixing space. This increases the contact area between the second collar and the mounting base, improving the stability of the connection between the connector and the mounting base.

[0069] The fixing components on the fan can also have notches, which connect to the fixing space. During actual operation, the assembler can use compression to cause the second shaft collar to elastically deform and enter the notch, then through the notch into the fixing space, thus completing the installation of the second shaft collar within the fixing space. Compared to other installation methods, the notch effectively reduces the resistance to the second shaft collar entering the fixing space, reduces the installation difficulty of the connectors and the fan, and improves the installation efficiency of the connectors and the fan.

[0070] In some embodiments, multiple fasteners may be provided on the fan, and at least two of the fasteners may have notches with different opening orientations. This is to prevent all second collars from dislodging from the notches when the fan vibrates along a certain notch direction, thereby increasing the possibility of the connectors dislodging from the fixed space and improving the stability of the connector and fastener installation.

[0071] Referring to Figures 8 and 9, in some embodiments, the fan assembly 100 further includes a shock-absorbing sleeve 4, which is at least partially fitted around the outer periphery of the fan; the shock-absorbing sleeve 4 fills the space between the fan 2 and the mounting base 1. The material of the shock-absorbing sleeve 4 can be rubber, elastic silicone, or polyurethane, and this application does not limit this. The shock-absorbing sleeve 4 serves to form a buffer between the fan 2 and the mounting base 1, thereby further attenuating the vibration energy transmitted from the fan 2 to the mounting base 1, reducing the impact of the fan 2's vibration on the mounting base 1, and improving the quietness of the fan assembly 100 during operation.

[0072] In the description of the embodiments of this application, it should be noted that the orientation or positional relationship of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other indicators are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0073] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art will understand that all or part of the processes for implementing the above embodiments and equivalent variations made in accordance with the claims of this application are still within the scope of this application.

Claims

1. A fan assembly, characterized in that, The device includes a mounting base, a fan, and a connector. The connector is provided with a positioning structure, which is used to cooperate with the mounting base and the fan to fix the fan and the mounting base to each other. The connector is made of an elastic material.

2. The wind turbine assembly as described in claim 1, characterized in that, The mounting base is provided with a positioning hole, and the fan is provided with a mounting through hole, and the positioning hole and the mounting through hole are aligned with each other; The positioning structure includes a connecting shaft and a first collar, wherein the connecting shaft passes through the positioning hole and the mounting through hole; The first collar is disposed on the side of the mounting hole away from the mounting base, and the cross-sectional area of ​​the first collar gradually decreases along the direction from the mounting base to the fan.

3. The wind turbine assembly as described in claim 2, characterized in that, The first collar is conical, and the cross-sectional area of ​​the conical surface gradually decreases along the direction from the mounting base to the fan. The larger end of the conical surface of the first collar contacts the side of the fan away from the mounting base.

4. The wind turbine assembly as described in claim 2, characterized in that, The positioning structure further includes a second collar, which is connected to the end of the connecting shaft opposite to the first collar, and the second collar is in contact with the side of the mounting base opposite to the fan.

5. The wind turbine assembly as described in claim 1, characterized in that, The mounting base is provided with a positioning hole, and the fan is provided with a mounting through hole, and the positioning hole and the mounting through hole are aligned with each other; The positioning structure includes a connecting shaft, a first collar, and a second collar. The connecting shaft passes through the positioning hole and the mounting through hole. The first collar contacts the side of the mounting base away from the fan, and the second collar contacts the side of the fan away from the mounting base.

6. The wind turbine assembly as described in any one of claims 4 or 5, characterized in that, One of the mounting base and the fan is provided with a fixing component; The fastener has a fixing space, which is aligned with the positioning hole and the mounting through hole. The size of the fixing space is larger than the diameter of the positioning hole or the mounting through hole. The second collar is disposed within the fixing space. The diameter of the second collar is larger than the diameter of the positioning hole or the mounting through hole, and the connecting shaft is adapted to the diameter of the positioning hole or the mounting through hole.

7. The wind turbine assembly as described in claim 6, characterized in that, The outer edge of the fastener has a notch, and the notch is connected to the fixing space.

8. The wind turbine assembly as described in claim 7, characterized in that, The fan assembly includes multiple connectors, and the mounting base or the fan is provided with multiple fixing components, with each connector and fixing component corresponding to the other. Each of the fasteners has a notch on its outer edge, and at least two of the fasteners have notches with different opening orientations.

9. The wind turbine assembly as described in claim 2 or 5, characterized in that, The connector further includes an end shaft, which is located on the side of the first collar facing away from the connecting shaft. The length of the end shaft is A, satisfying the relationship: 5mm≤A≤30mm.

10. The wind turbine assembly as claimed in claim 2, characterized in that, The connector further includes a third collar, which is connected to the connecting shaft. The third collar has a first end face and a second end face that are opposite to each other along the axial direction of the connector. The first end face is in contact with the side of the mounting base facing the fan, and the second end face is in contact with the side of the fan facing the mounting base.

11. The wind turbine assembly as claimed in claim 1, characterized in that, The fan assembly also includes a shock-absorbing sleeve, which is at least partially fitted around the outside of the fan along the outer periphery of the fan. The shock-absorbing sleeve is at least partially filled between the fan and the mounting base.

12. A 3D printing device, characterized in that, Includes the wind turbine assembly as described in any one of claims 1-11.

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