Fan device

Abstract

The utility model provides fan equipment which comprises a fan assembly and a base, and the fan assembly comprises a fan body, a rotating support, a fixed support and a first driving device; the fixed bracket is connected between the rotary bracket and the base; wherein the first driving device comprises a first motor, a first driving gear and a first driven gear, the fan body is rotatably connected to the rotating support, the first driving gear is meshed with the first driven gear, the first driven gear is fixedly installed on the rotating support, and the first motor is fixedly installed on the fan body; the first motor is in transmission connection with the first driving gear to drive the first driving gear to rotate, so that the fan body rotates up and down relative to the rotating support. The fan body provided by the utility model can be driven by the first motor to rotate up and down relative to the rotating bracket, so that the circulation of air in the height direction is promoted, the temperature stratification phenomenon is reduced, and the ventilation requirements of different heights in an area are met.

Description

Technical Field

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

[0002] As a common household appliance, the basic function of a fan is to generate airflow by driving the fan impeller to rotate through a motor, thereby accelerating the air flow to achieve the effect of cooling, ventilation or air circulation.

[0003] The air supply range of existing fan products may be mainly concentrated in the left and right directions, that is, horizontal swing. However, in crowded areas, people may be active at different heights, such as some sitting, some standing or some lying. Therefore, for people in this area, the required wind direction is different. A fan that simply swings left and right can only meet the horizontal ventilation needs of a space at a certain height. It is difficult to deliver wind to higher or lower areas, which can easily lead to uneven air volume distribution and prevent users at all heights from enjoying a suitable wind feeling. Utility Model Content

[0004] The present application provides a fan device to solve the technical problem that existing fans can only meet the horizontal ventilation needs of spaces at a certain height, are difficult to deliver wind to higher or lower areas, and easily lead to uneven air volume distribution.

[0005] In a first aspect, the present application provides a fan device, the fan device comprising a fan assembly and a base, the fan assembly comprising a fan body, a rotating bracket, a fixed bracket and a first driving device; the fixed bracket is connected between the rotating bracket and the base;

[0006] Wherein, the first driving device includes a first motor, a first driving gear and a first driven gear, the fan body is rotatably connected to the rotating bracket, the first driving gear is meshed with the first driven gear, the first driven gear is fixedly installed on the rotating bracket, the first motor is fixedly installed on the fan body, and the first motor is transmission-connected to the first driving gear to drive the first driving gear to rotate, so that the fan body rotates up and down relative to the rotating bracket.

[0007] Its further technical solution is that the rotating bracket includes a first connecting part, a second connecting part and a third connecting part, the second connecting part is connected between the first connecting part and the third connecting part, the first connecting part and the third connecting part are opposite to each other and arranged at intervals, the first connecting part, the second connecting part and the third connecting part jointly enclose a accommodating space, the fan body and the first driving device are located in the accommodating space, the fan body is rotatably connected to the first connecting part and the third connecting part, and the first driving device is located at the connection between the fan body and the third connecting part.

[0008] A further technical solution is that the fan assembly further includes a first bearing and a second bearing, the fan body is rotationally connected to the first connection portion via the first bearing, and the fan body is rotationally connected to the third connection portion via the second bearing.

[0009] A further technical solution is that the fixed bracket and / or the rotating bracket is a plastic bracket.

[0010] A further technical solution is that the first driving device also includes a first iron bracket, the first iron bracket is fixedly installed on the fan body, and the first motor is fixedly installed on the first iron bracket.

[0011] A further technical solution is that the fan device further comprises a second driving device, the second driving device comprising a second motor, a second driving gear and a second driven gear;

[0012] The second driving gear is meshed with the second driven gear, the second driven gear is fixedly mounted on the fixed bracket, the second motor is fixedly mounted on the rotating bracket, and the second motor is transmissionably connected to the second driving gear to drive the second driving gear to rotate, so that the fan body and the rotating bracket rotate left and right relative to the fixed bracket.

[0013] A further technical solution is that the second driving device also includes a second iron bracket, the second iron bracket is fixedly installed on the fixed bracket, and the second motor is fixedly installed on the second iron bracket.

[0014] A further technical solution is that the second driving device is located at the connection between the rotating bracket and the fixed bracket, and is located inside the rotating bracket or inside the fixed bracket.

[0015] A further technical solution is that the rotating bracket is provided with an annular shielding portion, the annular shielding portion is located between the rotating bracket and the fixed bracket, and the second driving gear and the second driven gear are located in the annular shielding portion.

[0016] A further technical solution is that the fan device further includes a connecting piece, and the connecting piece is detachably connected between the fixing bracket and the base.

[0017] The beneficial effect of the present application is: different from the prior art, the present application provides a fan assembly including a fan body, a rotating bracket, a fixed bracket and a first driving device, so that under the drive of the first driving device, the fan assembly can rotate up and down, and the first driving device specifically includes a first motor, a first driving gear and a first driven gear, the fan body is rotatably connected to the rotating bracket, and the first motor is fixedly installed on the fan body. In this way, the fan body can rotate up and down with the rotating bracket under the drive of the first motor, thereby promoting the circulation of air in the height direction, reducing the temperature stratification phenomenon, and meeting the ventilation needs of different heights in the area.

[0018] In addition, by adopting a simple gear transmission mechanism, that is, the meshing of the first driving gear and the first driven gear, the torque can be smoothly transmitted, which effectively reduces the vibration and impact during operation, makes the fan run more smoothly, reduces noise, and improves the user experience; and by adjusting the gear ratio of the first driving gear and the first driven gear, the rotation speed and direction of the fan body can be flexibly controlled, thereby achieving fine-tuning of the wind force to meet the wind force requirements at different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0020] Figure 1 A schematic structural diagram of an embodiment of the fan device provided in the present application as a standing fan;

[0021] Figure 2 A schematic diagram of the structure of an embodiment of the fan device provided in this application as a table fan;

[0022] Figure 3 This is a schematic assembly diagram of an embodiment of the first driving device provided in the present application;

[0023] Figure 4 An exploded schematic diagram of an embodiment of the first driving device provided in the present application;

[0024] Figure 5 This is a schematic diagram of an assembly of an embodiment of a second driving device provided by the present application;

[0025] Figure 6 This is a schematic diagram of an exploded view of an embodiment of the second driving device provided in the present application. DETAILED DESCRIPTION

[0026] 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.

[0027] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention may 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.

[0028] As a common household appliance, the basic function of a fan is to generate airflow by driving the fan impeller to rotate through a motor, thereby accelerating the air flow to achieve the effect of cooling, ventilation or air circulation.

[0029] The air supply range of existing fan products may be mainly concentrated in the left and right directions, that is, horizontal swing. However, in crowded areas, people may be active at different heights, such as some sitting, some standing or some lying. Therefore, for people in this area, the required wind direction is different. A fan that simply swings left and right can only meet the horizontal ventilation needs of a space at a certain height. It is difficult to deliver wind to higher or lower areas, which can easily lead to uneven air volume distribution and prevent users at all heights from enjoying a suitable wind feeling.

[0030] Therefore, in order to solve the technical problem that the existing fans can only meet the lateral ventilation needs of a space at a certain height, it is difficult to deliver wind to higher or lower areas, and it is easy to cause uneven air volume distribution, the present application provides a fan device that can meet the ventilation needs of different heights in the area, promote the circulation of air in the height direction, reduce the temperature stratification phenomenon, and thus improve the technical problem that the existing fans can only meet the lateral ventilation needs of a space at a certain height, it is difficult to deliver wind to higher or lower areas, and it is easy to cause uneven air volume distribution. Please refer to the following embodiments for details.

[0031] Example 1

[0032] See also Figure 1-Figure 6 , Figure 1 A schematic structural diagram of an embodiment of the fan device provided in the present application as a standing fan; Figure 2 A schematic diagram of the structure of an embodiment of the fan device provided in this application as a table fan; Figure 3 This is a schematic assembly diagram of an embodiment of the first driving device provided in the present application; Figure 4 An exploded schematic diagram of an embodiment of the first driving device provided in the present application; Figure 5 This is a schematic diagram of an assembly of an embodiment of a second driving device provided by the present application; Figure 6 This is a schematic diagram of an exploded view of an embodiment of the second driving device provided in the present application.

[0033] like Figure 1-Figure 4 As shown, the present application provides a fan device 10, which includes a fan assembly 100 and a base 200, wherein the fan assembly 100 includes a fan body 110, a rotating bracket 120, a fixed bracket 130 and a first driving device 140; the fixed bracket 130 is connected between the rotating bracket 120 and the base 200.

[0034] Among them, the first driving device 140 includes a first motor 141, a first driving gear 142 and a first driven gear 143, the fan body 110 is rotatably connected to the rotating bracket 120, the first driving gear 142 is meshed with the first driven gear 143, the first driven gear 143 is fixedly installed on the rotating bracket 120, the first motor 141 is fixedly installed on the fan body 110, and the first motor 141 is transmission-connected to the first driving gear 142 to drive the first driving gear 142 to rotate, so that the fan body 110 rotates up and down relative to the rotating bracket 120.

[0035] The fixing bracket 130 may be provided with a control panel 145 so as to control and adjust the air volume and direction of the fan device 10 through the control panel 145 and remote control.

[0036] The first motor 141 is used as a power source, which can be a stepper motor. When receiving a start signal, it starts to rotate. The power is transmitted to the first driving gear 142 through the motor shaft. The gear can be designed as a small gear and is located at the output end of the motor. It is directly driven by the motor and starts to rotate.

[0037] Since the first driven gear 143 is fixedly mounted on the rotating bracket 120, the fan body 110 is rotatably connected to the rotating bracket 120, and the first motor 141 is fixedly mounted on the fan, when the first motor 141 is started, the output shaft of the first motor 141 can be connected to the first driving gear 142 to drive the first driving gear 142 to rotate, while the first driven gear 143 itself does not rotate. The first driving gear 142 can rotate relative to the first driven gear 143 by meshing with the first driven gear 143, and transmit the torque to the first driven gear 143, so that the first driving device 140 can provide torque to the fan body 110 so that it can rotate relative to the rotating bracket 120.

[0038] This embodiment provides a fan assembly 100 including a fan body 110, a rotating bracket 120, a fixed bracket 130 and a first driving device 140, so that the fan assembly 100 can be rotated up and down under the drive of the first driving device 140, and the first driving device 140 specifically includes a first motor 141, a first driving gear 142 and a first driven gear 143. The fan body 110 is rotatably connected to the rotating bracket 120, and the first motor 141 is fixedly installed on the fan body 110. In this way, the fan body 110 can be rotated up and down with the rotating bracket 120 under the drive of the first motor 141, thereby promoting the circulation of air in the height direction, reducing the temperature stratification phenomenon, and meeting the ventilation needs of different heights in the area.

[0039] In addition, by adopting a simple gear transmission mechanism, that is, the meshing of the first driving gear 142 and the first driven gear 143, a smooth transmission of torque can be achieved, which effectively reduces vibration and impact during operation, makes the fan run more smoothly, reduces noise, and improves the user experience; and by adjusting the gear ratio of the first driving gear 142 and the first driven gear 143, the rotation speed and direction of the fan body 110 can also be flexibly controlled, thereby achieving fine-tuning of the wind force to meet the wind force requirements at different heights.

[0040] like Figure 1-Figure 4As shown, in some embodiments, the rotating bracket 120 includes a first connecting part 121, a second connecting part 122 and a third connecting part 123, the second connecting part 122 is connected between the first connecting part 121 and the third connecting part 123, the first connecting part 121 and the third connecting part 123 are opposite to each other and spaced apart, the first connecting part 121, the second connecting part 122 and the third connecting part 123 jointly enclose a accommodating space, the fan body 110 and the first driving device 140 are located in the accommodating space, the fan body 110 is rotatably connected to the first connecting part 121 and the third connecting part 123, and the first driving device 140 is located at the connection between the fan body 110 and the third connecting part 123.

[0041] The first connection portion 121 , the second connection portion 122 and the third connection portion 123 may be enclosed to form a U-shape.

[0042] By enclosing the first connecting part 121, the second connecting part 122 and the third connecting part 123 to form a U-shaped accommodating space, the fan body 110 and the first driving device 140 can be compactly arranged inside, reducing the occupied space, making the structure of the fan device 10 more compact and the appearance more simple and beautiful.

[0043] In some embodiments, the fan assembly 100 further includes a first bearing and a second bearing (see Figure 4 150), the fan body 110 is rotatably connected to the first connection portion 121 through the first bearing, and the fan body 110 is rotatably connected to the third connection portion 123 through the second bearing.

[0044] By arranging a first bearing on the first connection part 121 and a second bearing on the third connection part 123, so that the first bearing and the second bearing serve as the fulcrum for rotation, the direct friction between the fan body 110 and the rotating bracket 120 can be effectively reduced, and the smoothness of the fan body 110 rotating on the first connection part 121 and the third connection part 123 can be improved, thereby reducing the wear caused by long-term friction and extending the service life of the fan device 10. In addition, the setting of the double bearings ensures the balance of the supporting points on both sides, and whether the fan body 110 swings up or down, it can maintain precise positioning in space, and maintain good control even in dynamic changes, without offset or excessive shaking, thereby increasing the stability of the fan device 10 when in use.

[0045] In some embodiments, the fixed bracket 130 and / or the rotating bracket 120 are plastic brackets.

[0046] Since the plastic material can reduce the weight of the entire fan device 10, it is easy to carry, install and move. In addition, the cost of plastic material is relatively low. By making the fixed bracket 130 and / or the rotating bracket 120 a plastic bracket, the manufacturing cost can be reduced. In addition, the plastic material is not affected by the humid environment and will not rust. In this way, when used in places with high humidity such as kitchens and bathrooms, it can not only reduce the risk of electric shock, but also improve the safety and durability of the fan product.

[0047] In some embodiments, the first driving device 140 further includes a first iron bracket 144 , the first iron bracket 144 is fixedly mounted on the fan body 110 , and the first motor 141 is fixedly mounted on the first iron bracket 144 .

[0048] Since the first iron bracket 144 has higher strength and rigidity, it can withstand greater torque and tension. Therefore, by introducing the first iron bracket 144 in the first driving device 140, the first motor 141 is fixedly mounted on the first iron bracket 144. When the motor is driven, the first iron bracket 144 can more stably fix the motor and transmit torque, and will not be deformed due to excessive torque, so as to ensure long-term stable operation. In addition, the first motor 141 is fixedly mounted on the first iron bracket 144, and the first iron bracket 144 can better absorb the slight vibration when the motor is running, reduce vibration and noise, make the rotation more stable, and improve the user experience.

[0049] like Figure 1-Figure 6 As shown, in some embodiments, the fan device 10 further includes a second driving device 170 , and the second driving device 170 includes a second motor 171 , a second driving gear 172 , and a second driven gear 173 .

[0050] Among them, the second driving gear 172 is meshed with the second driven gear 173, the second driven gear 173 is fixedly installed on the fixed bracket 130, the second motor 171 is fixedly installed on the rotating bracket 120, and the second motor 171 is transmission-connected to the second driving gear 172 to drive the second driving gear 172 to rotate, so that the fan body 110 and the rotating bracket 120 rotate left and right relative to the fixed bracket 130.

[0051] Among them, the second motor 171 can be a stepper motor, which starts to rotate after receiving a start signal. The power is transmitted to the second driving gear 172 through the motor shaft of the second motor 171. The gear can be designed as a small gear, located at the output end of the motor, and is directly driven by the motor to start rotating.

[0052] Since the second driven gear 173 is fixedly mounted on the fixed bracket 130, the second motor 171 is fixedly mounted on the rotating bracket 120, and the second motor 171 is transmission-connected to the second driving gear 172, when the second motor 171 is started, the output shaft of the second motor 171 can be connected to the second driving gear 172 to drive the second driving gear 172 to rotate, while the second driven gear 173 is fixed to the fixed bracket 130 and does not rotate. The second driving gear 172 can rotate relative to the second driven gear 173 by meshing with the second driven gear 173, and transmit the torque to the second driven gear 173, so that the second driving device 170 can provide torque to the fan body 110 and the rotating bracket 120, so that the fan body 110 and the rotating bracket 120 rotate left and right relative to the fixed bracket 130.

[0053] By further providing a second driving device 170 on the fan device 10, the fan assembly 100 can be driven by the second driving device 170 to rotate left and right. That is, this embodiment realizes all-round uniform air supply by combining the left and right rotation of the fan body 110 with the up and down swinging, forming a three-dimensional air supply effect, which can promote the circulation of air, expand the air supply range, and enhance the user experience of the fan device 10.

[0054] And adopt a simple gear transmission mechanism, that is, the meshing of the second driving gear 172 and the second driven gear 173 can realize the smooth transmission of torque, effectively reduce the vibration and impact during operation, make the fan run more smoothly, reduce noise, and improve the user experience; and through the adjustment of the gear ratio of the second driving gear 172 and the second driven gear 173, the rotation speed and horizontal rotation of the fan body 110 can also be flexibly controlled, thereby realizing fine adjustment of wind force to meet the wind force requirements at different heights.

[0055] In some embodiments, the second driving device 170 further includes a second iron bracket 174 , the second iron bracket 174 is fixedly mounted on the fixed bracket 130 , and the second motor 171 is fixedly mounted on the second iron bracket 174 .

[0056] Among them, the second driven gear 173 can be fixed on the top of the fixed bracket 130 by screws, and screws can be locked on the side of the fixed bracket 130 to fix the second iron bracket 174 to prevent the second iron bracket 174 from moving up and down. The second stepper motor 171 drives the second driving gear 172 to rotate, and under the action of torque, drives the second iron bracket 174 and the fan body 110 to rotate left and right relative to the fixed bracket 130, thereby realizing the function of automatic left and right rotation.

[0057] Since the second iron bracket 174 has higher strength and rigidity, it can withstand greater torque and tension. Therefore, by introducing the second iron bracket 174 in the second driving device 170, the second motor 171 is fixedly mounted on the second iron bracket 174. When the second motor 171 is driven, the second iron bracket 174 can more stably fix the second motor 171 and transmit torque, and will not be deformed due to excessive torque, so as to ensure long-term stable operation. In addition, the second motor 171 is fixedly mounted on the second iron bracket 174, and the second iron bracket 174 can better absorb the slight vibration when the motor is running, reduce vibration and noise, make the rotation more stable, and improve the user experience.

[0058] In some embodiments, the second driving device 170 is located at the connection between the rotating bracket 120 and the fixed bracket 130 , and is located inside the rotating bracket 120 or inside the fixed bracket 130 .

[0059] By placing the second drive device 170 at the connection between the rotating bracket 120 and the fixed bracket 130, or even inside, such a layout can save the space occupied by the second drive device 170, making the entire fan device 10 more compact and easy to install and use in various spaces, especially suitable for modern compact home environments.

[0060] Specifically, the rotating bracket 120 is provided with an annular shielding portion 124 , the annular shielding portion 124 is located between the rotating bracket 120 and the fixed bracket 130 , and the second driving gear 172 and the second driven gear 173 are located in the annular shielding portion 124 .

[0061] By providing the annular shielding portion 124 on the rotating bracket 120, the second driving gear 172 and the second driven gear 173 and other internal transmission components can be effectively protected from the external environment, avoiding the entry of dust and foreign matter, reducing wear and tear, and extending the service life.

[0062] Furthermore, the annular shielding portion 124 can provide protection to prevent accidental contact with internal transmission components such as the second driving gear 172 and the second driven gear 173 , thereby improving the safety of the fan device 10 .

[0063] See also Figure 1 and Figure 2 In some embodiments, the fan device 10 further includes a connecting member 300 , and the connecting member 300 is detachably connected between the fixing bracket 130 and the base 200 .

[0064] Among them, the connecting member 300 can be a floor-standing rod. By setting a detachable floor-standing rod between the fixed bracket 130 and the base 200, when the floor-standing rod is removed, the fan device 10 can be used as a table fan, and when the floor-standing rod is installed, the fan device 10 can be used as a stand fan. That is, by setting a detachable connecting member 300, the fan device 10 can be flexibly converted between a table fan and a stand fan.

[0065] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, i.e., they may be located in one place, or may be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0066] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an", and "" as used herein may also be meant to include plural forms. The terms "comprise", "include", "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.

[0067] The above are only specific embodiments of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious 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 invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A fan device, characterized in that: The fan device comprises a fan assembly and a base, wherein the fan assembly comprises a fan body, a rotating bracket, a fixed bracket and a first driving device; the fixed bracket is connected between the rotating bracket and the base; Wherein, the first driving device includes a first motor, a first driving gear and a first driven gear, the fan body is rotatably connected to the rotating bracket, the first driving gear is meshed with the first driven gear, the first driven gear is fixedly installed on the rotating bracket, the first motor is fixedly installed on the fan body, and the first motor is transmission-connected to the first driving gear to drive the first driving gear to rotate, so that the fan body rotates up and down relative to the rotating bracket.

2. The fan device according to claim 1, characterized in that The rotating bracket includes a first connecting part, a second connecting part and a third connecting part, the second connecting part is connected between the first connecting part and the third connecting part, the first connecting part and the third connecting part are opposite to each other and spaced apart, the first connecting part, the second connecting part and the third connecting part jointly enclose a accommodating space, the fan body and the first driving device are located in the accommodating space, the fan body is rotatably connected to the first connecting part and the third connecting part, and the first driving device is located at the connection between the fan body and the third connecting part.

3. The fan device according to claim 2, characterized in that The fan assembly further includes a first bearing and a second bearing. The fan body is rotatably connected to the first connection portion via the first bearing, and the fan body is rotatably connected to the third connection portion via the second bearing.

4. The fan device according to claim 1, characterized in that The fixed bracket and / or the rotating bracket are plastic brackets.

5. The fan device according to claim 1, characterized in that The first driving device further includes a first iron bracket, the first iron bracket is fixedly mounted on the fan body, and the first motor is fixedly mounted on the first iron bracket.

6. The fan device according to claim 1, characterized in that The fan device further comprises a second driving device, the second driving device comprising a second motor, a second driving gear and a second driven gear; The second driving gear is meshed with the second driven gear, the second driven gear is fixedly mounted on the fixed bracket, the second motor is fixedly mounted on the rotating bracket, and the second motor is transmissionably connected to the second driving gear to drive the second driving gear to rotate, so that the fan body and the rotating bracket rotate left and right relative to the fixed bracket.

7. The fan device according to claim 6, characterized in that The second driving device also includes a second iron bracket, the second iron bracket is fixedly mounted on the fixed bracket, and the second motor is fixedly mounted on the second iron bracket.

8. The fan device according to claim 6, characterized in that The second driving device is located at the connection between the rotating bracket and the fixed bracket, and is located inside the rotating bracket or inside the fixed bracket.

9. The fan device according to claim 8, characterized in that The rotating bracket is provided with an annular shielding portion, the annular shielding portion is located between the rotating bracket and the fixed bracket, and the second driving gear and the second driven gear are located in the annular shielding portion.

10. The fan device according to claim 1, characterized in that The fan device further comprises a connecting member, which is detachably connected between the fixing bracket and the base.

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