Rotating structure and fan

Abstract

The utility model belongs to the technical field of fans, and particularly relates to a rotating structure and a fan. The rotating structure comprises a reducing sleeve with a rotating hole, rotating supporting seats arranged in the rotating hole, a rotating shaft with one end connected with the impeller and an elastic piece which has elastic restoring force and is located in the rotating hole, the two rotating supporting seats are arranged in the rotating hole in a spaced mode, and the other end of the rotating shaft is inserted into the rotating hole and connected with the two rotating supporting seats. The elastic piece is located between the two rotating supporting seats, and the two ends of the elastic piece are connected with the two rotating supporting seats respectively. Due to the fact that the elastic deformation of the elastic piece can prevent the two bearing seats from moving, noise of the rotating shaft can be reduced, the rotating shaft can rotate at a high speed, and the output wind speed is increased.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fan technical field, especially, a kind of rotation structure and fan. BACKGROUND

[0002] In hot summer, when people go out or participate in outdoor activities, air conditioning equipment is usually not available. In order to provide convenient cooling experience anytime, anywhere, portable fan gradually becomes a kind of popular product. This fan provides comfortable cooling solution for people in various scenarios with its characteristics of light and portable, available anytime.

[0003] However, due to the compact miniaturization design of portable fan, the rotating shaft inside is generally rotated and fixed by two bearings. Due to the error in manufacturing and assembly process, the two bearings are not coaxially arranged, and during the high-speed rotation of the rotating shaft, the two bearings may move or resonate, resulting in excessive noise and low wind speed of portable fan. SUMMARY

[0004] The purpose of the embodiment of the present application is to provide a kind of rotation structure, to solve the problem of how to reduce the noise in the process of fan operation.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is:

[0006] In the first aspect, a rotation structure is provided for rotating connection impeller, the rotation structure comprises: a rotating sleeve with a rotating hole, a rotating support seat arranged in the rotating hole, a rotating shaft connected to one end of the impeller, and an elastic member with elastic recovery force located in the rotating hole, the rotating support seat is arranged at intervals in the rotating hole, the other end of the rotating shaft is inserted into the rotating hole and connected to the two rotating support seats, the elastic member is located between the two rotating support seats, and the two ends of the elastic member are connected to the two rotating support seats respectively.

[0007] In some embodiments, the elastic member is in a compressed state, and the two ends of the elastic member respectively push the two rotating support seats in two opposite directions.

[0008] In some embodiments, the elastic member is a tube spring sleeved on the rotating shaft, and the two ends of the tube spring are connected to the two rotating support seats respectively.

[0009] In some embodiments, the rotation structure further comprises a positioning plate with an avoiding hole, the rotating sleeve is connected to the positioning plate at the avoiding hole, and the rotation structure further comprises a dust cover connected to the rotating sleeve and sealing the avoiding hole.

[0010] In some embodiments, the dustproof cover comprises a sealing plate connected to the positioning plate, and a dustproof sleeve connected to the sealing plate and located in the rotating hole, the dustproof sleeve abutting against one of the rotating support seats.

[0011] In some embodiments, the dustproof sleeve is provided with a dustproof ring, one end of the rotating shaft extends into the dustproof sleeve and passes through the dustproof ring and is provided with a snap ring.

[0012] In some embodiments, the sealing plate is provided with a positioning column, the positioning plate is provided with a positioning hole corresponding to the position of the positioning column, and the positioning column is located in the positioning hole; or the sealing plate is provided with a buckle head, the positioning plate is provided with a buckle slot corresponding to the position of the buckle head, and the buckle head is clamped in the buckle slot.

[0013] In some embodiments, the positioning plate is provided with a countersunk slot, and the extension path of the countersunk slot passes through the avoiding hole, and the sealing plate is located in the countersunk slot.

[0014] In some embodiments, the rotating structure further comprises a sealing ring connected to the adapter sleeve and used for sealing and limiting the corresponding rotating support seat.

[0015] In a second aspect, a fan is provided, which comprises the rotating structure, and further comprises a motor and an impeller, the motor is connected to the adapter sleeve to drive the impeller to rotate.

[0016] The application has the beneficial effects that: by arranging the elastic member between the two bearing seats located in the rotating hole, the elastic deformation of the elastic member can exert force on the outer ring of the bearing seat, so that the two bearing seats are connected as a whole, resonance between the two bearing seats is avoided, and the elastic deformation of the elastic member can also hinder the movement of the two bearing seats, so that the noise of the rotating shaft can be reduced, the rotating shaft can maintain high-speed rotation, and the output wind speed can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the embodiments or exemplary technical descriptions will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0018] Figure 1 is a perspective structural schematic diagram of a fan provided by the embodiments of the application;

[0019] Figure 2 is Figure 1 a sectional view schematic diagram of the fan of

[0020] Figure 3 is a partial explosion schematic diagram of the fan of Figure 1

[0021] Figure 4 is a perspective structural schematic diagram of the positioning plate of the fan of Figure 1

[0022] Figure 5 Another embodiment of the present application provides an explosion schematic diagram of the dust cover and the positioning plate;

[0023] Figure 6 is a perspective structural schematic diagram of the air duct structure of the fan of Figure 1

[0024] Figure 7 is a sectional view schematic diagram of the air duct structure of Figure 6

[0025] In the drawings, various reference signs represent:

[0026] 500, fan; 109, impeller; 110, motor; 210, rotating shaft; 220, bearing seat; 230, elastic member; 300, dust cover; 310, sealing plate; 320, dust cover; 330, dust ring; 410, positioning plate; 340, positioning column; 250, snap ring; 351, sealing ring; 352, sealing ring; 200, adapter sleeve; 201, rotating hole; 350, buckle head; 420, air duct structure; 411, buckle groove; 412, counterbore groove; 414, positioning hole; 413, avoidance hole; 100, air duct structure; 101, air outlet end; 102, air inlet end; 103, air duct shell; 104, ventilation hole; 105, air collecting shell; 106, guide plate; 107, air guide channel; 108, mounting table; 109, impeller; 110, motor; 1051, positioning column; 1081, positioning hole; DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0028] ​​​​It should be noted that when a component is referred to as being "fixed" or "set" on another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected" to another component, it can be directly or indirectly connected to the other component. The terms "upper", "lower", "left", "right", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "first", "second" are only for the convenience of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0029] Please refer to Figures 1 to 3 The embodiment of the present application provides a rotating structure and a fan 500 with the same, the fan 500 can be a portable fan 500 or a handheld fan 500, and can be used outdoors to cool the user.

[0030] The rotating structure can be used to rotatably connect the impeller 109, so that the impeller 109 can rotate to blow air under the drive of the motor 110.

[0031] Please refer to Figures 1 to 3 The rotating structure includes a rotating sleeve 200 with a rotating hole 201, rotating support seats arranged in the rotating hole 201, a rotating shaft 210 connected to one end of the impeller 109, and an elastic member 230 with elastic restoring force located in the rotating hole 201. The rotating support seats are arranged at intervals in the rotating hole 201, the other end of the rotating shaft 210 is inserted into the rotating hole 201 and connected to the two rotating support seats, the rotating support seat can be a bearing seat 220, the outer ring of the two bearing seats 220 abuts against the hole wall of the rotating hole 201, and is appropriately interference fitted with the hole wall of the rotating hole 201, so as to be positioned in the rotating hole 201, the rotating shaft 210 is inserted into the inner ring of the two bearing seats 220, so that the rotating shaft 210 is rotatably connected to the rotating sleeve 200 through the two bearing seats 220, the rotation of the impeller 109 can be driven by the motor 110, and the rotating shaft 210 can support the rotation of the impeller 109. The elastic member 230 is located between the two rotating support seats, and the two ends of the elastic member 230 are connected to the two rotating support seats, respectively. It can be understood that the elastic member 230 can be compressed and deformed, and push the two bearing seats 220 in two opposite directions, or the elastic member 230 can be stretched and deformed, and pull the two bearing seats 220 in two opposite directions, respectively. This is not limited here, and can be selected according to the actual situation.

[0032] Please refer toFigures 1 to 3 The rotating structure provided by the embodiments of the present application can avoid resonance between the two bearing seats 220 by arranging the elastic member 230 between the two bearing seats 220 located in the rotating hole 201, and can prevent the two bearing seats 220 from moving by the elastic deformation of the elastic member 230 itself, so as to reduce the noise of the rotating shaft 210, keep the rotating shaft 210 rotating at a high speed, and improve the output wind speed.

[0033] Please refer to Figures 1 to 3 Optionally, the elastic member 230 arranged between the two bearing seats 220 can provide stable rotating support for the rotating shaft 210, effectively reduce the yawing phenomenon of the impeller 109 during rotation, and improve the stability of the operation of the impeller 109. The elastic member 230 provides elastic buffering for the two bearing seats 220, which helps to absorb and relieve the vibration of the bearing seat 220 during rotation, and reduce the noise during rotation.

[0034] Please refer to Figures 1 to 3 In some embodiments, the elastic member 230 is in a compressed state, and the two ends of the elastic member 230 push the two bearing seats 220 in two opposite directions respectively, so that the two bearing seats 220 have a tendency to move away from each other. The two bearing seats 220 are provided with a blocking portion in the pushing direction of the elastic member 230, that is, the movement of the two bearing seats 220 away from each other is blocked by the blocking portion, and the tendency of the two bearing seats 220 to move towards each other is hindered by the compression deformation of the elastic member 230, so that the two bearing seats 220 can be kept as a whole, and the two bearing seats 220 can be kept stable and reduce noise during high-speed rotation of the rotating shaft 210.

[0035] Please refer to Figures 1 to 3 In some embodiments, the elastic member 230 is a tube spring sleeved on the rotating shaft 210, and the two ends of the tube spring are connected to the two bearing seats 220 respectively.

[0036] Please refer to Figures 1 to 3 Optionally, the tube spring can be sleeved on the rotating shaft 210, and the two ends of the tube spring abut against the outer rings of the two bearing seats 220 respectively. The tube spring can not only save installation space, but also provide uniform elastic restoring force in the axial direction, enhance the stability of the rotation of the two bearing seats 220, and can be suitable for miniaturization scene requirements.

[0037] Please refer to Figures 1 to 3 In some embodiments, the rotating structure further comprises a positioning plate 410 having an avoiding hole 413, and the adapter sleeve 200 is connected to the positioning plate 410 at the avoiding hole 413. The rotating structure further comprises a dust cover 300 connected to the adapter sleeve 200 and sealing the avoiding hole 413.

[0038] Referring to Figures 1 to 3 It can be understood that the positioning plate 410 can be integrally formed with the adapter sleeve 200, that is, the materials of the positioning plate 410 and the adapter sleeve 200 are plastic, and the positioning plate 410 and the adapter sleeve 200 can be integrally formed by an injection molding process. The rotating hole 201 extends through the positioning plate 410, and the positioning plate 410 is a circular plate. The adapter sleeve 200 is located at the center of the positioning plate 410, which ensures the installation position of the adapter sleeve 200 is accurate and improves the overall concentricity of the assembly.

[0039] Referring to Figures 1 to 3 Optionally, the adapter sleeve 200 has a first end and a second end opposite to the first end. The first end is connected to the positioning plate 410, and the second end is provided with the impeller 109. The dust cover 300 prevents dust or impurities from entering the rotating hole 201 from the first end, and can limit dust or foreign matter from entering the bearing seat 220, effectively protecting the bearing seat 220 and the elastic member 230, prolonging the service life and stability thereof.

[0040] Referring to Figures 1 to 3 In some embodiments, the dust cover 300 includes a sealing plate 310 connected to the positioning plate 410 and a dust cover 320 connected to the sealing plate 310 and located in the rotating hole 201. The dust cover 320 abuts against one of the bearing seats 220 to limit the bearing seat 220.

[0041] Referring to Figures 1 to 3 Optionally, the sealing plate 310 and the dust cover 320 are provided to enhance the sealing effect, prevent dust or foreign matter from entering the rotating hole 201 from the dust cover 320 to affect the bearing seat 220, improve the stability of the bearing seat 220 in operation, and avoid noise.

[0042] Optionally, the dust cover 320 abuts against the bearing seat 220 to limit the free displacement of the bearing seat 220, improving the positioning stability of the rotating shaft 210.

[0043] Referring to Figures 1 to 3 In some embodiments, the dust cover 320 is provided with a dust ring 330, and one end of the rotating shaft 210 extends into the dust cover 320 and passes through the dust ring 330 and is provided with a snap ring 250.

[0044] Referring to Figures 1 to 3Optionally, the dustproof ring 330 is located between the snap ring 250 and the bearing seat 220, and the rotating shaft 210 is in zero fit with the dustproof ring 330, so that the dust entering the bearing seat 220 can be further reduced, and the snap ring 250 on the rotating shaft 210 can be directly disassembled by using a tool due to the protection of the dustproof sleeve 320, and the bearing seat 220 will not be physically damaged due to the protection of the sealing plate 310 and the dustproof sleeve 320. The snap ring 250 is arranged to effectively prevent the axial deviation of the rotating shaft 210 caused by external force, and to ensure the long-term stability and operation accuracy of the rotating shaft 210.

[0045] Please refer to Figure 5 In some embodiments, the sealing plate 310 is provided with a positioning column 340, and the positioning plate 410 is provided with a positioning hole 414 corresponding to the position of the positioning column 340, and the positioning column 340 is located in the positioning hole 414.

[0046] Optionally, two positioning columns 340 are arranged in the two positioning holes 414, respectively, and the positioning hole 414 and the positioning column 340 are matched, so that the convenience of installing the sealing plate 310 and the positioning plate 410 can be improved.

[0047] Please refer to Figures 4 to 5 In some embodiments, the sealing plate 310 is provided with a buckle head 350, the positioning plate 410 is provided with a buckle groove 411 corresponding to the position of the buckle head 350, and the buckle head 350 is clamped in the buckle groove 411.

[0048] It can be understood that the buckle head 350 and the buckle groove 411 are also provided with two, respectively, and the two buckle heads 350 are clamped in the two buckle grooves 411, so that the sealing plate 310 is detachably connected to the positioning plate 410, and the convenience and reliability of assembling the sealing plate 310 are improved.

[0049] Please refer to Figures 4 to 5 In some embodiments, the positioning plate 410 is provided with a countersunk groove 412, and the extension path of the countersunk groove 412 passes through the avoiding hole 413, and the sealing plate 310 is located in the countersunk groove 412.

[0050] Please refer to Figures 1 to 3 Optionally, the arrangement of the countersunk groove 412 ensures the close combination of the sealing plate 310 and the positioning plate 410, reduces the risk of loosening, and improves the durability and anti-vibration performance of the structure.

[0051] Please refer to Figures 1 to 3 In some embodiments, the rotating structure further comprises a sealing ring 352 connected to the adapter sleeve 200 and used for sealing and limiting the corresponding bearing seat 220.

[0052] Please refer to Figures 6 to 7Optionally, the rotating shaft 210 passes through the sealing ring 352, and the rotating shaft 210 is in zero fit with the sealing ring 352, so that the external dust entering the rotating hole 201 can be reduced as much as possible, the stability of the bearing seat 220 in operation is improved, the sealing performance is strengthened, and the displacement of the bearing seat 220 in the rotating process due to the lateral force is prevented, and the stability is improved.

[0053] Optionally, the rotating shaft 210 is provided with the sealing ring 351 at each end, and the two sealing rings 351 further prevent the external dust from entering the rotating hole 201 from the two ends of the adapter sleeve 200.

[0054] The utility model also proposes a fan 500, the fan 500 includes rotating structure, and the specific structure of rotating structure refers to the above embodiment, because the fan 500 of the utility model adopts all technical schemes of the above all embodiments, and therefore also has all beneficial effects brought by the technical scheme of the above embodiment, and here will not be repeated.

[0055] Please refer to Figures 6 to 7 In some embodiments, the fan 500 further includes the motor 110 and the impeller 109, and the motor 110 is connected to the adapter sleeve 200 to drive the impeller 109 to rotate.

[0056] Please refer to Figures 6 to 7 Optionally, the fan 500 further includes the air duct structure 100, the positioning plate 410 is connected to the air duct structure 100, and the motor 110 is connected to the adapter sleeve 200 to drive the impeller 109 to rotate stably and efficiently, reduce energy loss and reduce operating noise.

[0057] The air duct structure 100 includes the air duct shell 103, the mounting table 108 in a hollow structure and the flow guide plate 106, the positioning plate 410 is located in the mounting table 108, and the peripheral plate edge of the positioning plate 410 is connected to the inner wall of the mounting table 108.

[0058] Please refer to Figure 1 The air duct shell 103 has the air inlet end 102 and the air outlet end 101, and the air duct shell 103 is further provided with the ventilation hole 104, and the two ends of the ventilation hole 104 extend to the air inlet end 102 and the air outlet end 101 respectively; the external airflow can flow into the ventilation hole 104 from the air inlet end 102 and flow out of the ventilation hole 104 from the air outlet end 101. It can be understood that the external airflow can flow into the ventilation hole 104 from the air inlet end 102 under the action of the impeller 109, and the flow direction of the airflow is as shown by the arrow in the figure. Figures 6 to 7

[0059] Please refer to Figures 6 to 7 ​The mounting table 108 is arranged in the ventilation hole 104 and located at the air outlet end 101, and the side surface of the mounting table 108 is arranged in a spaced manner between the hole wall of the ventilation hole 104. It can be understood that the shape of the mounting table 108 is cylindrical, and the four side surfaces of the mounting table 108 are not in contact with the hole wall of the ventilation hole 104. The mounting table 108 is arranged at the air outlet end 101 to mount the flow guide plate 106.

[0060] Please refer to Figures 6 to 7 The flow guide plate 106 is arranged in the ventilation hole 104 and is inclined relative to the radial direction of the air duct shell 103, that is, the flow guide plate 106 has a certain inclination angle, so that the flow guide plate 106 can guide the airflow when the airflow flows through the flow guide plate 106. The two side edges of the flow guide plate 106 are connected to the hole wall of the ventilation hole 104 and the side surface of the mounting table 108 respectively, so that the flow guide plate 106 can connect the mounting table 108 and the air duct shell 103.

[0061] Please refer to Figures 6 to 7 Among them, a plurality of flow guide plates 106 are arranged in a spaced manner along the circumference of the mounting table 108, and any two adjacent flow guide plates 106, the mounting table 108 and the hole wall of the ventilation hole 104 together form an air guide channel 107. It can be understood that each flow guide plate 106 is arranged in a radial manner outward along the circumference of the mounting table 108, and a plurality of air guide channels 107 are arranged along the circumference of the mounting table 108, so as to guide the airflow entering the ventilation hole 104.

[0062] Please refer to Figures 6 to 7 It can be understood that the flow guide plate 106 is arranged in the ventilation hole 104 in an inclined manner, and the inclination angle is a certain value, which aims to maximize the guidance and acceleration of the airflow. The two side edges of the flow guide plate 106 are closely connected to the hole wall of the ventilation hole 104 and the side surface of the mounting table 108 respectively, forming a stable connection structure, and also ensuring that the airflow can be effectively guided when flowing through. A plurality of flow guide plates 106 are arranged in a spaced manner along the circumference of the mounting table 108, and each two adjacent flow guide plates 106, the mounting table 108 and the hole wall of the ventilation hole 104 together form an air guide channel 107. These air guide channels 107 are distributed in a radial manner, like the spokes of a wheel, which uniformly and efficiently guide the airflow to the air outlet end 101.

[0063] Please refer to Figures 6 to 7 The air duct structure 100 provided by the embodiment of the present application forms a plurality of air guide channels 107 in the ventilation hole 104, so that the airflow can form axial rotation outflow when flowing through each air guide channel 107. This is conducive to wind gathering in the ventilation hole 104 and has a good air guiding effect, and finally improves the wind speed and airflow intensity of the airflow flowing out of the air outlet end 101.

[0064] Please refer to Figures 6 to 7Optionally, in the embodiment, eight guide plates 106 are arranged, and in other embodiments, nine or more guide plates 106 can be arranged, which is not limited here and can be selected according to actual conditions.

[0065] Optionally, the materials of the air duct shell 103, the guide plate 106, and the mounting table 108 can be plastic, which can be integrally formed by an injection molding process, thereby ensuring the strength and durability of the structure and improving the production efficiency.

[0066] Injection molding is a plastic manufacturing process in which molten plastic material is injected into a mold and then cooled and solidified to form a plastic part. The principle is to inject the heated and molten plastic material into the mold through an injection machine, and then cool and form.

[0067] Please refer to Figures 6 to 7 In some embodiments, the guide plates 106 are arranged along the circumference of the mounting table 108 with equal curvature.

[0068] Please refer to Figures 6 to 7 Optionally, the guide plates 106 are arranged along the circumference of the mounting table 108 with equal curvature, so that the cross-sectional area of each air guide channel 107 is the same, thereby ensuring that the air flow from each air guide channel 107 is the same in size, avoiding uneven air flow distribution. Ensure that the air flow velocity of each air guide channel 107 is consistent, improve the air speed of the air duct structure 100 at the air outlet end 101, and at the same time reduce the turbulent noise.

[0069] In some embodiments, one side of the guide plate 106 is a convex arc surface, and the other side of the guide plate 106 is a concave arc surface.

[0070] Please refer to ​ Optionally, one side of the guide plate 106 is convex, and the other side is concave, so that the guide plate 106 as a whole is curved and has a certain arc shape, thereby allowing the air flow to flow out of the air guide channel 107 in a spiral rotation manner, which can enhance the air flow concentration effect, reduce air flow dispersion, improve air flow kinetic energy conversion efficiency, and thereby improve the air flow strength and air flow speed of the air outlet end 101.

[0071] The above is only an optional embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of the claims of the present application.

Claims

1. A rotating structure for rotationally connecting an impeller, characterized by, The rotating structure comprises a rotating sleeve with a rotating hole, rotating support seats arranged in the rotating hole, a rotating shaft with one end connected to the impeller, and an elastic member with elastic restoring force and located in the rotating hole, two of the rotating support seats are arranged in the rotating hole, the other end of the rotating shaft is inserted into the rotating hole and connected to the two rotating support seats, the elastic member is located between the two rotating support seats, and the two ends of the elastic member are respectively connected to the two rotating support seats.

2. The rotating structure of claim 1, wherein: The elastic member is in a compressed state, and the two ends of the elastic member respectively push the two rotating support seats in two opposite directions.

3. The rotating structure of claim 1, wherein: The elastic member is a tube spring sleeved on the rotating shaft, and the two ends of the tube spring are respectively connected to the two rotating support seats.

4. A rotating structure according to any one of claims 1-3, characterized in that: The rotating structure further comprises a positioning plate with an avoiding hole, the rotating sleeve is connected to the positioning plate at the avoiding hole, and the rotating structure further comprises a dustproof cover connected to the rotating sleeve and sealing the avoiding hole.

5. The rotating structure of claim 4, wherein: The dustproof cover comprises a sealing plate connected to the positioning plate and a dustproof sleeve connected to the sealing plate and located in the rotating hole, and the dustproof sleeve abuts against one of the rotating support seats.

6. The rotating structure of claim 5, wherein: The dustproof sleeve is provided with a dustproof ring, one end of the rotating shaft extends into the dustproof sleeve, passes through the dustproof ring, and is provided with a snap ring.

7. The rotating structure of claim 5, wherein: The sealing plate is provided with a positioning column, the positioning plate is provided with a positioning hole corresponding to the position of the positioning column, and the positioning column is located in the positioning hole; or the sealing plate is provided with a buckle head, the positioning plate is provided with a buckle groove corresponding to the position of the buckle head, and the buckle head is clamped in the buckle groove.

8. The rotating structure of claim 5, wherein: The positioning plate is provided with a countersunk groove, and the extension path of the countersunk groove passes through the avoiding hole, and the sealing plate is located in the countersunk groove.

9. The rotating structure of any one of claims 1-3, wherein: The rotating structure further comprises a sealing ring, and the sealing ring is connected to the rotating sleeve and used for sealing and limiting the corresponding rotating support seat.

10. A fan, characterized by The fan comprises the rotating structure according to any one of claims 1-9, and further comprises a motor and an impeller, and the motor is connected to the rotating sleeve to drive the impeller to rotate.

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