A fan

Abstract

The utility model discloses a fan, include: head, head includes mounting piece and stator, cover structure, cover structure with head detachable connection, fan blade structure, fan blade structure with cover structure detachable connection, fan blade structure includes fan blade and outer rotor, outer rotor sets up on fan blade, outer rotor sets up at the outside of stator to form outer rotor motor component, and outer rotor has the gap between stator. The utility model discloses outer rotor sets up on fan blade, and outer rotor sets up at the outside of stator, when cleaning fan blade, can with cover structure and fan blade structure together with head separation after, with cover structure and fan blade structure together clean, also can continue with cover structure and fan blade structure separation, clean fan blade structure alone, and the cleaning of fan blade structure is more convenient.

Description

Technical Field

[0001] This utility model belongs to the field of fan technology, and specifically relates to a fan. Background Technology

[0002] A fan is an electrical appliance that uses rotating blades to accelerate the circulation of air. The blades are usually driven by a motor. Fans are mainly used for cooling and ventilating the air. Fans can be used in daily household life as well as in factory production.

[0003] In related technologies, fans often use internal rotor motors to drive the fan blades. An internal rotor motor includes a stator and a rotor; the stator includes coils, and the rotor includes magnets. The stator is located outside the rotor, and the fan blades are connected to the internal rotor motor. Because the stator contains coils, to prevent water from entering the stator, the fan blades need to be separated from the stator of the internal rotor motor for cleaning. Furthermore, since the cover structure is located outside the fan blades, cleaning the blades requires removing the cover structure first, making disassembly and reassembly for cleaning relatively inconvenient. Utility Model Content

[0004] To overcome at least one of the defects described in the prior art, this utility model provides a fan in which an outer rotor is disposed on the fan blades and is disposed outside the stator to form an outer rotor motor assembly. When cleaning the fan blades, the outer cover structure and the fan blade structure can be separated from the head and then the outer cover structure and the fan blade structure can be cleaned together. Alternatively, the outer cover structure and the fan blade structure can be separated further and the fan blade structure can be cleaned separately. The cleaning of the fan blade structure is relatively convenient.

[0005] The technical solution adopted by this utility model to solve its problem is: A fan, comprising: The head unit, which includes mounting components and the stator; The outer casing structure is detachably connected to the machine head. The fan blade structure is detachably connected to the outer casing structure. The fan blade structure includes fan blades and an outer rotor. The outer rotor is mounted on the fan blades and is located outside the stator, with a gap between the outer rotor and the stator.

[0006] As an optional implementation, the fan blade structure also includes a rotating shaft, which is disposed on the fan blade; The first end of the rotating shaft extends along the axial direction of the fan blade towards the front of the fan blade, so that the first end of the rotating shaft is rotatably connected to the outer casing structure. The second end of the shaft extends along the axial direction of the fan blade toward the back of the fan blade, so that the second end of the shaft is rotatably connected to the mounting component.

[0007] As an alternative implementation, the fan blades, outer rotor, and shaft are connected as a single unit.

[0008] As an optional implementation, the outer cover structure is provided with a first mounting hole for engaging with a rotating shaft, and the rotating shaft is rotatably connected to the first mounting hole via a first bearing; The mounting component is provided with a second mounting hole for mating with the rotating shaft, and the rotating shaft is rotatably connected to the second mounting hole through a second bearing.

[0009] As an optional implementation, the fan blade includes interconnected blades and a main body, with a first connecting portion provided on the back of the main body, and the outer rotor arranged circumferentially along the inner sidewall of the first connecting portion. The front of the machine head is provided with a second connecting part, and the stator is located at the inner center of the second connecting part; The second connecting part is fitted outside the first connecting part, and the outer rotor is fitted outside the stator.

[0010] As an optional implementation, the outer cover structure includes a front mesh cover and a rear mesh cover, which are detachably connected. The front mesh cover is located on the front side of the fan blade, and the rear mesh cover is located on the back side of the fan blade.

[0011] As an optional implementation, a third connecting part is provided on the front of the main body, and a fourth connecting part is provided on the back of the front mesh cover, with the third connecting part sleeved on the outside of the fourth connecting part. The first connecting part, the second connecting part, the third connecting part and the fourth connecting part are coaxially arranged; The first end of the rotating shaft is located at the center of the third connecting part and is rotatably connected to the fourth connecting part; The first end of the rotating shaft is located at the center of the first connecting part, and the second end of the rotating shaft is rotatably connected to the second connecting part.

[0012] As an optional implementation, the rear mesh cover is provided with a fifth connecting part, which is sleeved outside the second connecting part, and the inner sidewall of the fifth connecting part abuts against the outer sidewall of the second connecting part.

[0013] As an optional implementation, the mounting component is provided with a first connecting protrusion and the outer cover structure is provided with a first connecting recess, or the mounting component is provided with a first connecting recess and the outer cover structure is provided with a first connecting protrusion. The first connecting recess includes a first connecting segment and a second connecting segment that are interconnected. After the connecting protrusion moves into the first connecting segment along the axial direction of the outer cover structure, the connecting protrusion continues to move along the circumferential direction of the outer cover structure and engages with the second connecting segment.

[0014] As an optional implementation, the outer cover structure is provided with a second connecting recess, and the mounting component is provided with a second connecting protrusion; Alternatively, the outer cover structure may be provided with a second connecting protrusion, and the mounting component may be provided with a second connecting recess.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: In this invention, the outer rotor is mounted on the fan blades, and the outer rotor is positioned outside the stator to form an outer rotor motor assembly. When cleaning the fan blades, the outer cover structure and the fan blade structure can be separated from the head and then cleaned together. Alternatively, the outer cover structure can be further separated from the fan blade structure, and the fan blade structure can be cleaned separately. Cleaning the fan blade structure is relatively convenient. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a first-view structural schematic diagram of an embodiment of the present invention.

[0018] Figure 2 This is a structural schematic diagram from a second perspective of an embodiment of the present invention.

[0019] Figure 3 This is a structural schematic diagram from a third-view perspective of an embodiment of the present invention.

[0020] Figure 4 This is an embodiment of the present utility model. Figure 3 A schematic diagram of the internal structure.

[0021] Figure 5 This is an embodiment of the present utility model. Figure 4 A magnified view of a portion of the image.

[0022] Figure 6 This is an exploded structural diagram of an embodiment of the present invention.

[0023] Figure 7 This is an embodiment of the present utility model. Figure 6 A schematic diagram of the internal structure.

[0024] Figure 8 This is an embodiment of the present utility model. Figure 6 A further breakdown diagram of the structure.

[0025] Figure 9This is a schematic diagram of the back of the front mesh cover according to an embodiment of the present invention.

[0026] Figure 10 This is a schematic diagram of the back of the rear mesh cover according to an embodiment of the present invention.

[0027] Explanation of key figure labels: 10. Head unit; 101. Mounting component; 102. Stator; 103. Second mounting hole; 104. Second bearing; 105. Second connecting part; 106. First connecting protrusion; 107. Second connecting protrusion; 20. Outer cover structure; 201. First mounting hole; 202. First bearing; 203. Front mesh cover; 204. Rear mesh cover; 205. Fourth connecting part; 206. Fifth connecting part; 207. First connecting recess; 2071. First connecting section; 2072. Second connecting section; 208. Second connecting recess; 30. Fan blade structure; 301. Fan blade; 3011. Blade; 3012. Main body; 3013. First connecting part; 3014. Third connecting part; 302. Outer rotor; 303. Shaft. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0030] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0031] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0032] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0033] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0034] See Figure 1 as well as Figure 10 This utility model discloses a fan, including: a head 10, the head 10 including a mounting part 101 and a stator 102; an outer cover structure 20, the outer cover structure 20 being detachably connected to the head 10; a fan blade structure 30, the fan blade structure 30 being detachably connected to the outer cover structure 20; the fan blade structure 30 includes fan blades 301 and an outer rotor 302, the outer rotor 302 being disposed on the fan blades 301, the outer rotor 302 being disposed outside the stator 102, and a gap being present between the outer rotor 302 and the stator 102.

[0035] In this invention, the outer rotor 302 is mounted on the fan blade 301, and the outer rotor 302 is mounted outside the stator 102 to form an outer rotor motor assembly. When cleaning the fan blade 301, the outer cover structure 20 and the fan blade structure 30 can be separated from the head 10 together and then cleaned together. Alternatively, the outer cover structure 20 can be separated from the fan blade structure 30, and the fan blade structure 30 can be cleaned separately. The cleaning of the fan blade structure 30 is relatively convenient.

[0036] It should be noted that both the stator 102 and the outer rotor 302 can be directly adopted from existing stators and outer rotors. The stator 102 includes multiple coils, and the outer rotor 302 includes multiple magnets or an outer rotor 302 includes a magnetic ring. The number of coils and magnets depends on the actual application and is not limited. When the coils of the stator 102 are energized, the generated magnetic field will cause the outer rotor 302 to generate torque and start rotating.

[0037] The working principle of the external rotor motor assembly is based on Ampere's law and the Lorentz force. According to Ampere's law, the current flowing through the coil generates a magnetic field, and according to the Lorentz force law, a conductor in a magnetic field experiences a force. Therefore, when the coil of stator 102 is energized, a magnetic field is generated, which exerts a force on the magnet on the external rotor 302, thereby driving the external rotor 302 to rotate.

[0038] In this embodiment of the present invention, the fan blade structure 30 further includes a rotating shaft 303, which is disposed on the fan blade 301. The first end of the rotating shaft 303 extends along the axial direction of the fan blade 301 toward the front of the fan blade 301, so that the first end of the rotating shaft 303 is rotatably connected to the outer cover structure 20. The second end of the rotating shaft 303 extends along the axial direction of the fan blade 301 toward the back of the fan blade 301, so that the second end of the rotating shaft 303 is rotatably connected to the mounting member 101.

[0039] For example, see Figure 4 as well as Figure 7 The front of the fan blade 301 is rotatably connected to the outer cover structure 20 through the first end of the rotating shaft 303, and the back of the fan blade 301 is rotatably connected to the mounting part 101 through the second end of the rotating shaft 303. In other words, the fan blade structure 30 provides front and rear support for the fan blade 301 through the rotating shaft 303, thereby improving the installation stability and rotational stability of the fan blade 301.

[0040] In this embodiment of the utility model, the fan blade 301, the outer rotor 302, and the rotating shaft 303 are connected as one unit.

[0041] It should be noted that the magnets or magnetic rings included in the outer rotor 302 are all permanent magnets, such as neodymium iron boron (NdFeB) and ferrite permanent magnets. Since water washing does not affect the magnetism of permanent magnets, the outer rotor 302 and the fan blade 301 can be washed together when cleaning the fan blade structure 30. In this way, the fan blade 301, the outer rotor 302 and the shaft 303 are connected as one unit for easy use by the user.

[0042] When the outer rotor 302 rotates under the drive of the stator 102, since the fan blade 301, the outer rotor 302 and the rotating shaft 303 are connected as one unit, the fan blade 301, the outer rotor 302 and the rotating shaft 303 rotate together with the outer cover structure 20.

[0043] For example, both the fan blade 301 and the shaft 303 are made of plastic. The fan blade 301 and the shaft 303 can be injection molded together. The fan blade 301 has a mounting groove, which is used to snap the outer rotor 302 into the mounting groove to fix the outer rotor 302, thereby connecting the outer rotor 302 and the shaft 303 into one unit.

[0044] For example, the fan blade 301 and the shaft 303 are both made of plastic. The outer rotor 302 is used as an insert. After the pre-prepared outer rotor 302 is put into the production mold, molten plastic is injected. The molten plastic and the outer rotor 302 are solidified together to form an integrated fan blade 301, outer rotor 302 and shaft 303.

[0045] The way the fan blade 301, the outer rotor 302, and the rotating shaft 303 are connected as a whole can be selected according to actual needs and is not limited.

[0046] In this embodiment of the utility model, the outer cover structure 20 is provided with a first mounting hole 201 for cooperating with the rotating shaft 303, and the rotating shaft 303 is rotatably connected to the first mounting hole 201 through a first bearing 202; the mounting component 101 is provided with a second mounting hole 103 for cooperating with the rotating shaft 303, and the rotating shaft 303 is rotatably connected to the second mounting hole 103 through a second bearing 104.

[0047] For example, see Figures 7 to 10 By setting a first bearing 202 to support and assist the rotation of the first end of the rotating shaft 303, and setting a second bearing 104 to support and assist the rotation of the second end of the rotating shaft 303, the rotating shaft 303 can rotate more stably and smoothly.

[0048] Since the fan blade structure 30 is detachably connected to the outer cover structure 20 and the head 10, the first end of the rotating shaft 303 is detachably connected to the first bearing 202, or the first end of the rotating shaft 303 is fixedly connected to the first bearing 202, and the first bearing 202 is detachably connected to the outer cover structure 20; the second end of the rotating shaft 303 is detachably connected to the second bearing 104, or the second end of the rotating shaft 303 is fixedly connected to the second bearing 104, and the second bearing 104 is detachably connected to the mounting part 101.

[0049] The specific connection method between the rotating shaft 303, the first bearing 202 and the outer cover structure 20 shall be based on the ability to detachably connect the fan blade structure 30 and the outer cover structure 20, and shall not be restricted; the specific connection method between the rotating shaft 303, the second bearing 104 and the outer cover structure 20 shall be based on the ability to detachably connect the fan blade structure 30 and the mounting part 101, and shall not be restricted.

[0050] In this embodiment of the present invention, the fan blade 301 includes interconnected blades 3011 and a main body 3012. A first connecting portion 3013 is provided on the back of the main body 3012, and an outer rotor 302 is arranged circumferentially along the inner sidewall of the first connecting portion 3013. A second connecting portion 105 is provided on the front of the head 10, and a stator 102 is disposed at the inner center of the second connecting portion 105. The second connecting portion 105 is sleeved on the outside of the first connecting portion 3013, and the outer rotor 302 is sleeved on the outside of the stator 102.

[0051] It should be noted that the blade 3011 and the main body 3012 are integrally formed, or the blade 3011 and the main body 3012 are detachably connected, provided that the blade 3011 and the main body 3012 can rotate together.

[0052] For example, see Figures 7 to 10 Both the first connecting part 3013 and the second connecting part 105 are annular sleeves. The second connecting part 105 is sleeved on the outside of the first connecting part 3013, and the outer rotor 302 is sleeved on the outside of the stator 102, so that the installation of the fan blade structure 30 and the mounting part 101 is more compact, thereby reducing the thickness of the fan in the axial direction.

[0053] Mounting component 101 provides support for the outer casing structure 20 and the fan blade structure 30. Mounting component 101 can be in the shape of a mounting base or a mounting rod. Fans can use mounting components 101 of different shapes and structures in different application scenarios.

[0054] In this embodiment of the utility model, the outer cover structure 20 includes a front mesh cover 203 and a rear mesh cover 204. The front mesh cover 203 and the rear mesh cover 204 are detachably connected. The front mesh cover 203 is disposed on the front side of the fan blade 301, and the rear mesh cover 204 is disposed on the back side of the fan blade 301.

[0055] For example, see Figure 8 Since the fan blade structure 30 is located inside the outer cover structure 20, the front cover 203 and the rear cover 204 can be detachably connected to facilitate the installation of the fan blade structure 30.

[0056] The front mesh cover 203 and the rear mesh cover 204 can be detachably connected by means of snap-fit, threaded connection or other methods.

[0057] In this embodiment of the utility model, a third connecting part 3014 is provided on the front side of the main body 3012, and a fourth connecting part 205 is provided on the back side of the front mesh cover 203. The third connecting part 3014 is sleeved on the outside of the fourth connecting part 205. The first connecting part 3013, the second connecting part 105, the third connecting part 3014, and the fourth connecting part 205 are coaxially arranged. The first end of the rotating shaft 303 is located at the center of the third connecting part 3014 and the first end of the rotating shaft 303 is rotatably connected to the fourth connecting part 205. The first end of the rotating shaft 303 is located at the center of the first connecting part 3013 and the second end of the rotating shaft 303 is rotatably connected to the second connecting part 105.

[0058] For example, see Figures 7 to 10 Both the third connecting part 3014 and the fourth connecting part 205 are annular sleeves. The third connecting part 3014 is sleeved on the outside of the fourth connecting part 205 so that the installation of the fan blade structure 30 and the outer cover structure 20 is more compact, thereby reducing the thickness of the fan in the axial direction.

[0059] Furthermore, since the shaft 303, fan blade 301, and outer rotor 302 rotate together, the third connecting part 3014 is provided on the back of the front cover 203 to install the shaft 303, which can prevent the shaft 303 from being exposed and accidentally injuring the user.

[0060] In this embodiment of the utility model, a fifth connecting part 206 is provided on the rear net cover 204. The fifth connecting part 206 is sleeved outside the second connecting part 105, and the inner sidewall of the fifth connecting part 206 abuts against the outer sidewall of the second connecting part 105.

[0061] For example, see Figures 7 to 10 Since the front mesh cover 203 is rotatably connected to the rotating shaft 303 through the third connecting part 3014, and the rear mesh cover 204 abuts against the second connecting part 105 through the fifth connecting part 206, the front and rear positions of the outer cover structure 20 are supported, thereby improving the installation stability of the outer cover structure 20.

[0062] In this embodiment of the utility model, the mounting member 101 is provided with a first connecting protrusion 106, and the outer cover structure 20 is provided with a first connecting recess 207; the first connecting recess 207 includes a first connecting segment 2071 and a second connecting segment 2072 that are interconnected. After the connecting protrusion moves along the axial direction of the outer cover structure 20 and enters the first connecting segment 2071, the connecting protrusion continues to move along the circumferential direction of the outer cover structure 20 and engages with the second connecting segment 2072.

[0063] For example, see Figures 7 to 10 The first connecting recess 207 is provided on the rear mesh cover 204.

[0064] In use, the rear mesh cover 204 first moves along the axial direction of the rear mesh cover 204 toward the mounting member 101 (direction A) so that the connecting protrusion enters the first connecting section 2071. Then, the rear mesh cover 204 is rotated counterclockwise so that the connecting protrusion enters the second connecting section 2072, thereby realizing the detachable connection between the rear mesh cover 204 and the mounting member 101.

[0065] During disassembly, rotate the rear mesh cover 204 clockwise so that the connecting protrusion enters the first connecting section 2071. Then, the rear mesh cover 204 moves along the axial direction of the rear mesh cover 204 away from the mounting member 101 (direction B) so that the connecting protrusion separates from the first connecting section 2071, thereby realizing the separation of the rear mesh cover 204 from the mounting member 101.

[0066] It should be noted that in other embodiments, the mounting component 101 is provided with a first connecting recess 207, and the outer cover structure 20 is provided with a first connecting protrusion 106.

[0067] In this embodiment of the utility model, the outer cover structure 20 is provided with a second connecting recess 208, and the mounting member 101 is provided with a second connecting protrusion 107.

[0068] For example, see Figures 7 to 10 Both the second connecting recess 208 and the second connecting protrusion 107 are annular sleeves. The second connecting protrusion 107 plays an auxiliary role in connecting the outer cover structure 20 and the mounting component 101.

[0069] It should be noted that in other embodiments, the outer cover structure 20 is provided with a second connecting protrusion 107, and the mounting member 101 is provided with a second connecting recess 208.

[0070] For cases where the outer casing structure 20 and the fan blade structure 30 are cleaned together: Rotate the outer cover structure 20 clockwise, and move the outer cover structure 20 along the axial direction of the rear mesh cover 204 away from the mounting part 101 (direction B), so that the first connecting protrusion 106 separates from the first connecting recess 207, and the rotating shaft 303 separates from the second bearing 104, thereby separating the outer cover structure 20 and the fan blade structure 30 together from the machine head 10, so that the outer cover structure 20 and the fan blade structure 30 can be cleaned together.

[0071] For the case where only the fan blade structure 30 is cleaned: After the outer cover structure 20 and the fan blade structure 30 are separated from the head 10, the rotating shaft 303 moves away from the outer cover structure 20 along direction A, so that the rotating shaft 303 is separated from the first bearing 202. Since the fan blade 301, the outer rotor 302 and the rotating shaft 303 are connected as one unit, that is, the fan blade structure 30 is separated from the outer cover structure, so the fan blade structure 30 can be cleaned separately.

[0072] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A fan, characterized in that, include: The head unit includes mounting components and a stator; An outer cover structure, wherein the outer cover structure is detachably connected to the machine head; The fan blade structure is detachably connected to the outer cover structure. The fan blade structure includes a fan blade and an outer rotor. The outer rotor is disposed on the fan blade and outside the stator, and there is a gap between the outer rotor and the stator.

2. The fan according to claim 1, characterized in that: The fan blade structure also includes a rotating shaft, which is disposed on the fan blade; The first end of the rotating shaft extends along the axial direction of the fan blade toward the front of the fan blade, so that the first end of the rotating shaft is rotatably connected to the outer cover structure. The second end of the rotating shaft extends along the axial direction of the fan blade toward the back of the fan blade, so that the second end of the rotating shaft is rotatably connected to the mounting component.

3. The fan according to claim 2, characterized in that: The fan blades, the outer rotor, and the rotating shaft are connected as one unit.

4. The fan according to claim 2, characterized in that: The outer cover structure is provided with a first mounting hole for cooperating with the rotating shaft, and the rotating shaft is rotatably connected to the first mounting hole through a first bearing; The mounting component is provided with a second mounting hole for engaging with the rotating shaft, and the rotating shaft is rotatably connected to the second mounting hole via a second bearing.

5. The fan according to claim 2, characterized in that: The fan blade includes interconnected blades and a main body. A first connecting part is provided on the back of the main body, and the outer rotor is arranged circumferentially along the inner sidewall of the first connecting part. The front of the machine head is provided with a second connecting part, and the stator is disposed at the inner center of the second connecting part; The second connecting part is sleeved outside the first connecting part, and the outer rotor is sleeved outside the stator.

6. The fan according to claim 5, characterized in that: The outer cover structure includes a front mesh cover and a rear mesh cover, which are detachably connected. The front mesh cover is disposed on the front side of the fan blade, and the rear mesh cover is disposed on the back side of the fan blade.

7. The fan according to claim 6, characterized in that: The front of the main body is provided with a third connecting part, and the back of the front mesh cover is provided with a fourth connecting part. The third connecting part is sleeved on the outside of the fourth connecting part. The first connecting portion, the second connecting portion, the third connecting portion, and the fourth connecting portion are coaxially arranged; The first end of the rotating shaft is located at the center of the third connecting part and is rotatably connected to the fourth connecting part; The first end of the rotating shaft is located at the center of the first connecting part, and the second end of the rotating shaft is rotatably connected to the second connecting part.

8. The fan according to claim 6, characterized in that: The rear mesh cover is provided with a fifth connecting part, which is sleeved outside the second connecting part, and the inner sidewall of the fifth connecting part abuts against the outer sidewall of the second connecting part.

9. The fan according to any one of claims 1-8, characterized in that: The mounting component is provided with a first connecting protrusion, and the outer cover structure is provided with a first connecting recess, or the mounting component is provided with a first connecting recess, and the outer cover structure is provided with a first connecting protrusion. The first connecting recess includes a first connecting segment and a second connecting segment that are interconnected. After the connecting protrusion moves into the first connecting segment along the axial direction of the outer cover structure, the connecting protrusion continues to move along the circumferential direction of the outer cover structure to engage with the second connecting segment.

10. The fan according to any one of claims 1-8, characterized in that: The outer cover structure is provided with a second connecting recess, and the mounting component is provided with a second connecting protrusion; Alternatively, the outer cover structure may be provided with a second connecting protrusion, and the mounting component may be provided with a second connecting recess.

Images