Fan

Abstract

The invention provides a fan which comprises a fan net assembly, and the fan net assembly comprises fan blades. The fan net assembly is detachably connected to the machine head, the machine head comprises a motor, and the motor is provided with an output shaft; the transmission module comprises a transmission main body and a transmission shaft, the transmission shaft is rotatably arranged on the transmission main body in a penetrating mode, and the transmission main body is detachably connected to the fan net assembly; when the transmission main body is connected to the fan net assembly, the transmission shaft penetrates through the fan blades; when the machine head is connected to the fan net assembly, the output shaft is connected to the transmission shaft in a coupling mode. According to the fan provided by the invention, the transmission of the output shaft of the motor and the fan blades adopts a modular design structure, the convenience and efficiency of disassembly of the fan can be improved, in addition, the modular transmission module can be used for fans with different sizes, the development time can be saved to a certain extent, and the development cost can be reduced to a certain extent.

Description

Technical Field

[0001] The present application relates to the field of household appliances, and in particular to a fan. Background Art

[0002] A fan is a device that uses an electric motor to drive the blades to rotate, thereby generating airflow. It is mainly used for air circulation, cooling, ventilation and heat dissipation. Fans are widely used in homes, offices, industrial sites and many other occasions.

[0003] A fan usually includes a connected fan-mesh assembly and a drive assembly. The fan-mesh assembly mainly includes a front mesh, a rear mesh and fan blades. The drive assembly includes a motor front cover and a motor shaft. In traditional fan designs, the front mesh is located in front of the fan blades and is fixed separately to the rear mesh. The rear mesh is fixed separately to the motor front cover by screws. The fan blades are matched with the motor shaft and the motor shaft pin or retaining ring through a shaft connector integrated with the fan blades.

[0004] However, this assembly structure requires the user to remove the front mesh, rear mesh, and fan blades from the drive assembly one by one when disassembling the fan, which makes the disassembly more complicated. Summary of the invention

[0005] The present application provides a fan to improve at least one of the above problems.

[0006] The present application provides a fan, comprising:

[0007] A fan-net assembly, the fan-net assembly comprising fan blades;

[0008] A machine head, the fan-net assembly is detachably connected to the machine head, the machine head comprises a motor, and the motor has an output shaft; and

[0009] A transmission module, wherein the transmission module comprises a transmission body and a transmission shaft, wherein the transmission shaft is rotatably inserted into the transmission body, and the transmission body is detachably connected to the fan-net assembly; when the transmission body is connected to the fan-net assembly, the transmission shaft is inserted into the fan blades; when the machine head is connected to the fan-net assembly, the output shaft is coupled to the transmission shaft.

[0010] In some embodiments, the transmission body includes a transmission housing and a bearing, the transmission housing is provided with an accommodating space, the bearing is located in the accommodating space, the transmission shaft passes through the bearing and the transmission housing, and the transmission housing is detachably connected to the fan net assembly.

[0011] In some embodiments, the transmission housing includes a first sub-shell and a second sub-shell, the first sub-shell and the second sub-shell together enclose the accommodating space; and the first sub-shell is detachably connected to the second sub-shell.

[0012] In some embodiments, the first sub-shell is provided with a first connection hole, the second sub-shell is provided with a second connection hole, the first connection hole is connected to the accommodation space, the second connection hole is connected to the accommodation space, and the transmission shaft is passed through the first connection hole and the second connection hole;

[0013] The transmission body also includes a first sealing ring and a second sealing ring. The first sealing ring is sleeved on the outer circumference of the transmission shaft and abuts between the first sub-shell and the transmission shaft to block the first connecting hole. The second sealing ring is sleeved on the outer circumference of the transmission shaft and abuts between the second sub-shell and the transmission shaft to block the second connecting hole.

[0014] In some embodiments, the transmission body further includes a third sealing ring, and the third sealing ring is located at an end of the first sub-shell and abuts between the first sub-shell and the second sub-shell.

[0015] In some embodiments, the fan net assembly further includes a front net and a rear net connected to each other, the rear net and the front net together enclose an installation space, the fan blades are located in the installation space, and a mounting groove is provided on a side of the rear net away from the installation space;

[0016] The fan-net assembly also includes a pressing piece, the transmission body is detachably mounted on the mounting groove, and the pressing piece is detachably connected to the rear net. When the transmission body is located in the mounting groove and the pressing piece is connected to the rear net, the transmission body abuts against the rear net and the pressing piece.

[0017] In some embodiments, the fan net assembly further includes a first limit member and a second limit member, wherein the first limit member and the second limit member are arranged in sequence along the axial direction of the transmission shaft, and the fan blade is clamped between the first limit member and the second limit member to fix the fan blade on the transmission shaft.

[0018] In some embodiments, the transmission module further includes a buffer sleeve, which is sleeved on the outer circumference of the transmission housing and abuts between the transmission housing and the rear net.

[0019] In some embodiments, the number of the bearings is one or more, the transmission shaft passes through the bearings, the transmission body further includes a plurality of stop plates, each of the stop plates is clamped to the transmission shaft, the plurality of stop plates are arranged in sequence along the axial direction of the transmission shaft, and the stop plates are provided on opposite sides of the bearing along the axial direction of the transmission shaft.

[0020] The fan provided in the embodiment of the present application is provided with a drive assembly and a transmission module which are detachably connected to the fan-mesh assembly. Since the transmission body on the transmission module is detachably connected to the fan-mesh assembly, and the transmission shaft on the transmission module is coupled to the output shaft of the motor of the machine head, that is, the transmission module is used as a connecting bridge between the machine head and the fan-mesh assembly. In this way, the blades in the fan-mesh assembly can be separated from the transmission module and the output shaft of the motor, thereby improving the existing situation in which the fan blades cooperate with the motor shaft and the motor shaft pin through the shaft connector integrated with the fan blades, so that the fan-mesh assembly can be disassembled from the drive assembly as a whole, avoiding the complicated process of disassembling each component included in the fan-mesh assembly from the drive assembly one by one, thereby improving the convenience and efficiency of fan disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings herein are incorporated into and constitute a part of the specification, are embodiments consistent with the present application, and together with the description, are used to explain the principles of the present application.

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0023] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0024] Figure 1 A schematic diagram of the assembly of a fan provided in an embodiment of the present application.

[0025] Figure 2 A schematic cross-sectional view of a fan provided in an embodiment of the present application.

[0026] Figure 3 A schematic diagram of the assembly structure of the fan mesh assembly provided in an embodiment of the present application.

[0027] Figure 4 A schematic diagram of the exploded structure of the fan mesh assembly provided in an embodiment of the present application.

[0028] Figure 5 A schematic diagram of the assembly structure of the nose provided in an embodiment of the present application.

[0029] Figure 6 A schematic diagram of the assembly structure of a transmission module according to an embodiment of the present application.

[0030] Figure 7 A schematic diagram of the assembly structure of another embodiment of the transmission module provided in the implementation manner of the present application.

[0031] Figure 8 for Figure 6 Schematic cross-section of .

[0032] Fig. 9 A schematic diagram of the exploded structure of the transmission module provided in an embodiment of the present application.

[0033] Fig.10 A schematic diagram of the structure of a bearing and a stop plate provided in an embodiment of the present application.

[0034] Description of reference numerals:

[0035] Fan 1, transmission module 10, transmission body 100, transmission housing 110, first sub-shell 111, second sub-shell 112, bearing 120, accommodating space 130, first connecting hole 140, second connecting hole 150, transmission shaft 200, first sealing ring 310, second sealing ring 320, third sealing ring 330, buffer sleeve 340, stop plate 350, machine head 20, motor 21, output shaft 22, fan net assembly 30, fan blades 31, through hole 301, front net 32, rear net 33, installation groove 331, installation space 34, pressing piece 35, first limit piece 36, second limit piece 37. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0037] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0038] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0039] A fan is a device that uses an electric motor to drive the blades to rotate, thereby generating airflow. It is mainly used for air circulation, cooling, ventilation and heat dissipation. Fans are widely used in homes, offices, industrial sites and many other occasions.

[0040] A fan is a device that uses an electric motor to drive the blades to rotate, thereby generating airflow. It is mainly used for air circulation, cooling, ventilation and heat dissipation. Fans are widely used in homes, offices, industrial sites and many other occasions.

[0041] A fan usually includes a connected fan-mesh assembly and a drive assembly. The fan-mesh assembly mainly includes a front mesh, a rear mesh and fan blades. The drive assembly includes a motor front cover and a motor shaft. In traditional fan designs, the front mesh is located in front of the fan blades and is fixed separately to the rear mesh. The rear mesh is fixed separately to the motor front cover by screws. The fan blades are matched with the motor shaft and the motor shaft pin or retaining ring through a shaft connector integrated with the fan blades.

[0042] However, this assembly structure requires the user to remove the front mesh, rear mesh, and fan blades from the drive assembly one by one when disassembling the fan, which makes the disassembly more complicated.

[0043] Therefore, in order to solve the technical problem that the front mesh, rear mesh and fan blades need to be disassembled one by one from the drive assembly, resulting in complicated disassembly, the present application provides a fan, which enables the fan-mesh assembly to be disassembled from the drive assembly as a whole, thereby avoiding the complicated process of disassembling each component included in the fan-mesh assembly from the drive assembly one by one, thereby improving the convenience and efficiency of fan disassembly. Please refer to the following embodiments for details.

[0044] See also Figures 1 to 10The embodiment of the present application proposes a fan, including a fan mesh assembly 30, a head 20 and a transmission module 10.

[0045] Wherein, the fan net assembly 30 includes fan blades 31.

[0046] The fan net assembly 30 is detachably connected to the machine head 20 . The machine head 20 includes a motor 21 . The motor 21 has an output shaft 22 .

[0047] The transmission module 10 includes a transmission body 100 and a transmission shaft 200, wherein the transmission shaft 200 is rotatably inserted into the transmission body 100, and the transmission body 100 is detachably connected to the fan-net assembly 30; when the transmission body 100 is connected to the fan-net assembly 30, the transmission shaft 200 is inserted into the fan blades 31; when the machine head 20 is connected to the fan-net assembly 30, the output shaft 22 is coupled to the transmission shaft 200.

[0048] Since the output shaft 22 of the motor 21 is coupled to the transmission shaft 200, and the transmission shaft 200 passes through the fan blades 31, when the motor 21 is started, the power of the motor 21 can be transmitted to the transmission shaft 200. The transmission shaft 200 starts to rotate under the drive of the motor 21, and further transmits the power to the fan blades 31, so that the fan blades 31 rotate with the rotation of the transmission shaft 200. The rotation of the fan blades 31 generates wind force, thereby realizing the blowing function of the fan 1.

[0049] In some embodiments, the head 20 can be detachably connected to the fan mesh assembly 30 by means of a threaded connection, a snap connection, or a latch connection.

[0050] Similarly, the transmission body 100 can be detachably connected to the fan net assembly 30 by means of threaded connection, snap connection, or latch connection.

[0051] The fan 1 provided in this embodiment is provided with a drive assembly and a transmission module 10 which are detachably connected to the fan head 30. Since the transmission body 100 on the transmission module 10 is detachably connected to the fan head 30, and the transmission shaft 200 on the transmission module 10 is coupled to the output shaft 22 of the motor 21 of the machine head 20, that is, the transmission module 10 is used as a connecting bridge between the machine head 20 and the fan head 30, the blades 31 in the fan head 30 can be separated from the transmission module 10 and the output shaft 22 of the motor 21, thereby improving the existing situation in which the blades 31 of the fan 1 cooperate with the shaft of the motor 21 and the shaft latch of the motor 21 through the shaft connector integrated with the blades 31 of the fan 1, so that the fan head 30 can be disassembled from the drive assembly as a whole, avoiding the complicated process of disassembling each component included in the fan head 30 from the drive assembly one by one, thereby improving the convenience and efficiency of disassembling the fan 1.

[0052] Furthermore, the modular transmission module 10 can be used on fans of different sizes, which can save development time and reduce development costs to a certain extent.

[0053] In some embodiments, the transmission body 100 includes a transmission housing 110 and a bearing 120, the transmission housing 110 is provided with a receiving space 130, the bearing 120 is located in the receiving space 130, the transmission shaft 200 is passed through the bearing 120 and the transmission housing 110, and the transmission housing 110 is detachably connected to the fan net assembly 30.

[0054] In some embodiments, the transmission housing 110 includes a first sub-shell 111 and a second sub-shell 112 , and the first sub-shell 111 and the second sub-shell 112 are together enclosed to form the accommodating space 130 ; the first sub-shell 111 is detachably connected to the second sub-shell 112 .

[0055] The first sub-shell 111 can be detachably connected to the second sub-shell 112 by means of threaded connection, snap connection, magnetic connection, or latch connection.

[0056] In this way, the detachable connection between the first sub-shell 111 and the second sub-shell 112 simplifies the assembly process and improves the assembly efficiency of the transmission module 10 .

[0057] In some embodiments, the first sub-shell 111 is provided with a first connecting hole 140, and the second sub-shell 112 is provided with a second connecting hole 150, the first connecting hole 140 is connected to the accommodating space 130, the second connecting hole 150 is connected to the accommodating space 130, and the transmission shaft 200 is passed through the first connecting hole 140 and the second connecting hole 150.

[0058] The transmission body 100 also includes a first sealing ring 310 and a second sealing ring 320. The first sealing ring 310 is sleeved on the outer periphery of the transmission shaft 200 and abuts between the first sub-shell 111 and the transmission shaft 200 to block the first connecting hole 140. The second sealing ring 320 is sleeved on the outer periphery of the transmission shaft 200 and abuts between the second sub-shell 112 and the transmission shaft 200 to block the second connecting hole 150.

[0059] Since the fan net assembly 30 may be soaked in water during the process of disassembly and cleaning, the bearing 120 in the transmission module 10 may be easily soaked in water, causing the bearing to be damaged to a certain extent.

[0060] Therefore, the embodiment of the present application introduces a first sealing ring 310 that is sleeved on the outer periphery of the transmission shaft 200 and abuts between the transmission housing 110 and the transmission shaft 200, and a second sealing ring 320 that is sleeved on the outer periphery of the transmission shaft 200 and abuts between the transmission housing 110 and the transmission shaft 200. The first sealing ring 310 and the second sealing ring 320 are used to respectively block the first connecting hole 140 and the second connecting hole 150 to form a double seal. That is, the transmission module 10 in the embodiment of the present application has the characteristics of sealing and waterproofing, which can effectively prevent impurities such as dust and water from entering the interior of the transmission module 10, reduce the damage of impurities such as dust and water to the internal bearing 120 of the transmission module 10, and thus extend the service life of the transmission module 10.

[0061] In addition, since the transmission housing 110 includes the first sub-shell 111 and the second sub-shell 112, there is a gap at the connection between the first sub-shell 111 and the second sub-shell 112. Therefore, in order to prevent impurities such as dust and water from flowing into the transmission module 10 from the connection between the first sub-shell 111 and the second sub-shell 112, the overall sealing effect of the transmission module 10 is improved.

[0062] In some embodiments, the transmission body 100 further includes a third sealing ring 330 , and the third sealing ring 330 is located at an end of the first sub-shell 111 and abuts between the first sub-shell 111 and the second sub-shell 112 .

[0063] In this way, by introducing the third sealing ring 330 at the connection between the first sub-shell 111 and the second sub-shell 112, impurities such as dust and water can be prevented from flowing into the transmission module 10 from the connection between the first sub-shell 111 and the second sub-shell 112, thereby improving the overall sealing effect of the transmission module 10.

[0064] In some embodiments, the fan net assembly 30 also includes a front net 32 ​​and a rear net 33 connected to each other, the rear net 33 and the front net 32 ​​together enclose an installation space 34, the fan blades 31 are located in the installation space 34, and an installation groove 331 is provided on the side of the rear net 33 facing away from the installation space 34.

[0065] The fan net assembly 30 also includes a pressing piece 35, the transmission body 100 is detachably mounted on the mounting groove 331, and the pressing piece 35 is detachably connected to the rear net 33. When the transmission body 100 is located in the mounting groove 331 and the pressing piece 35 is connected to the rear net 33, the transmission body 100 abuts against the rear net 33 and the pressing piece 35.

[0066] In this way, after the transmission module is fixed to the rear net 33 , the pressing member 35 is used to further fix the connection between the transmission module and the rear net 33 , thereby improving the stability of the connection between the transmission module and the rear net 33 .

[0067] In some embodiments, the fan net assembly 30 also includes a first limit member 36 and a second limit member 37, and the first limit member 36 and the second limit member 37 are arranged in sequence along the axial direction of the transmission shaft 200, and the fan blade 31 is clamped between the first limit member 36 and the second limit member 37 to fix the fan blade 31 on the transmission shaft 200.

[0068] The first limiting member 36 may be a cover, which is disposed at the end of the transmission shaft 200 to prevent the fan blades 31 from being separated from the transmission shaft 200 .

[0069] The second limiting member 37 passes through the transmission shaft 200 and can be fixed on the transmission shaft 200 by means of a snap connection.

[0070] In this way, by sequentially arranging the first limit member 36 and the second limit member 37 in the axial direction of the transmission shaft 200, the first limit member 36 and the second limit member 37 surround the fan blades 31, thereby preventing the fan blades 31 from moving in the radial direction, thereby improving the operating stability of the fan 1.

[0071] In some embodiments, the transmission module 10 further includes a buffer sleeve 340 , which is sleeved on the outer circumference of the transmission housing 110 and abuts between the transmission housing 110 and the rear net 33 .

[0072] Since the blades of the fan blades 31 are relatively large, it is inevitable that there will be a certain rotational imbalance during the production process, resulting in slight vibrations, and the vibrations will be transmitted to the entire fan 1. Therefore, by arranging a buffer sleeve 340 on the outer periphery of the transmission housing 110, the vibration caused by the imbalance of the fan blades 31 can be absorbed, which helps to prevent the vibrations from being transmitted to various moving parts, thereby reducing the noise generated by the fan 1.

[0073] In some embodiments, the number of the bearings 120 is one or more, and the transmission shaft 200 is passed through the bearings 120. When the number of the bearings 120 is multiple, the multiple bearings 120 are arranged along the axial direction of the transmission shaft 200. The transmission body 100 also includes a plurality of stop plates 350, each of which is clamped on the transmission shaft 200, and the multiple stop plates 350 are arranged in sequence along the axial direction of the transmission shaft 200. The stop plates 350 are provided on opposite sides of the bearings 120 along the axial direction of the transmission shaft 200.

[0074] The number of the bearings 120 may be 1, 2, 4, etc.

[0075] In the embodiment provided in the present application, the number of bearings 120 is preferably 2.

[0076] The bearing 120 is provided with an inner ring and an outer ring. The inner ring of the bearing 120 can rotate relative to the outer ring. The transmission shaft 200 passes through the inner ring and is fixedly connected to the inner ring. The outer ring is fixedly connected to the transmission housing 110 .

[0077] In this way, by providing the stopper sheets 350 on both opposite sides of the transmission shaft 200 in the axial direction, the transmission shaft 200 can be effectively prevented from moving in the radial direction, thereby improving the operating stability of the fan 1.

[0078] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0079] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0080] The above is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A fan, characterized in that: include: A fan-net assembly, the fan-net assembly comprising fan blades; A machine head, the fan-net assembly is detachably connected to the machine head, the machine head comprises a motor, and the motor has an output shaft; and A transmission module, wherein the transmission module comprises a transmission body and a transmission shaft, wherein the transmission shaft is rotatably inserted into the transmission body, and the transmission body is detachably connected to the fan-net assembly; when the transmission body is connected to the fan-net assembly, the transmission shaft is inserted into the fan blades; when the machine head is connected to the fan-net assembly, the output shaft is coupled to the transmission shaft.

2. The fan according to claim 1, characterized in that The transmission body includes a transmission housing and a bearing. The transmission housing is provided with a receiving space. The bearing is located in the receiving space. The transmission shaft passes through the bearing and the transmission housing. The transmission housing is detachably connected to the fan net assembly.

3. The fan according to claim 2, characterized in that: The transmission housing includes a first sub-shell and a second sub-shell, the first sub-shell and the second sub-shell are together enclosed to form the accommodating space; the first sub-shell is detachably connected to the second sub-shell.

4. The fan according to claim 3, characterized in that: The first sub-shell is provided with a first connecting hole, the second sub-shell is provided with a second connecting hole, the first connecting hole is connected to the accommodation space, the second connecting hole is connected to the accommodation space, and the transmission shaft is passed through the first connecting hole and the second connecting hole; The transmission body also includes a first sealing ring and a second sealing ring. The first sealing ring is sleeved on the outer circumference of the transmission shaft and abuts between the first sub-shell and the transmission shaft to block the first connecting hole. The second sealing ring is sleeved on the outer circumference of the transmission shaft and abuts between the second sub-shell and the transmission shaft to block the second connecting hole.

5. The fan according to claim 3, characterized in that: The transmission body further includes a third sealing ring, which is located at the end of the first sub-shell and abuts between the first sub-shell and the second sub-shell.

6. The fan according to claim 2, characterized in that: The fan net assembly also includes a front net and a rear net connected to each other, wherein the rear net and the front net together enclose an installation space, the fan blades are located in the installation space, and a mounting groove is provided on a side of the rear net away from the installation space; The fan-net assembly also includes a pressing piece, the transmission body is detachably mounted on the mounting groove, and the pressing piece is detachably connected to the rear net. When the transmission body is located in the mounting groove and the pressing piece is connected to the rear net, the transmission body abuts against the rear net and the pressing piece.

7. The fan according to claim 6, characterized in that: The fan net assembly also includes a first limit member and a second limit member, which are arranged in sequence along the axial direction of the transmission shaft, and the fan blades are clamped between the first limit member and the second limit member to fix the fan blades on the transmission shaft.

8. The fan according to claim 6, characterized in that: The transmission module further includes a buffer sleeve, which is sleeved on the outer periphery of the transmission housing and abuts between the transmission housing and the rear net.

9. The fan according to claim 2, characterized in that: The number of the bearings is one or more, the transmission shaft is passed through the bearings, the transmission body also includes a plurality of stop plates, each of the stop plates is clamped on the transmission shaft, the plurality of stop plates are arranged in sequence along the axial direction of the transmission shaft, and the stop plates are provided on opposite sides of the bearing along the axial direction of the transmission shaft.

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