Fan module, motor of portable rotating equipment and high-speed motor

Abstract

The invention provides a fan module which comprises a wind scooper, a fan assembly and a fan assembly. An air outlet corresponding to the air inlet is formed in the air guide pipe, and the end, back to the air outlet, of the air guide pipe is connected with the end, back to the air inlet, of the air guide cover; the fan assembly is connected into the air guide pipe, and at least part of the structure of the fan assembly stretches out of the air guide pipe and stretches into the air guide cover. The air guide cover and the air guide pipe form the air flow channel of the fan module, so that the air flow entering the air flow channel can be guided, and the air flow can more efficiently flow to the air outlet from the air inlet.

Description

Fan modules, motors for portable rotating equipment and high-speed motors Technical Field

[0001] The present application relates to the field of fan technology, and in particular to a fan module, a motor of a portable rotating device, and a high-speed motor. Background Art

[0002] In the hot summer, fans have become a must-have item for people to eliminate the heat. With people's demand for convenient use, lighter and more portable fans are becoming more and more popular.

[0003] A conventional fan comprises a housing and a fan assembly disposed within the housing. The housing has an air inlet and an air outlet, and the fan assembly propels air from the inlet to the outlet. The inventors of this application discovered that conventional fan housings have a loose structure, lack proper guidance for airflow, and result in low fan exhaust efficiency.

[0004] Summary of the Invention

[0005] The main purpose of the present application is to provide a fan module, comprising: an air guide cover, which is provided with an air inlet; an air guide duct, which is provided with an air outlet corresponding to the air inlet, and the end of the air guide duct facing away from the air outlet is connected to the end of the air guide cover facing away from the air inlet; a fan assembly, which is connected to the air guide duct, and at least part of the structure of the fan assembly extends out of the air guide duct and into the air guide cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] This application will illustrate the embodiments with reference to the accompanying drawings. The drawings in this application are only used to describe the embodiments for illustrative purposes. Without departing from the principles of this application, those skilled in the art can easily make other embodiments according to the steps described below by following the description.

[0007] FIG1-1 is a three-dimensional schematic diagram of a fan module according to a specific embodiment of the present application.

[0008] 1-2 is a cross-sectional view of a fan module according to a specific embodiment of the present application.

[0009] 1-3 are exploded schematic diagrams of a fan module according to a specific embodiment of the present application.

[0010] 1-4 are three-dimensional schematic diagrams of a side shell from a top view according to a specific embodiment of the present application.

[0011] 1-5 are schematic three-dimensional diagrams of a side shell as viewed from a bottom perspective according to a specific embodiment of the present application.

[0012] 1-6 are exploded schematic diagrams of a fan assembly according to a specific embodiment of the present application.

[0013] 1-7 are three-dimensional schematic diagrams of the upper shell of a specific embodiment of the present application.

[0014] FIG2-1 is a schematic diagram of the overall structure of a fan module according to a specific embodiment of the present application.

[0015] FIG2-2 is a schematic structural diagram of a flexible shell according to a specific embodiment of the present application.

[0016] Figure 2-3 is a schematic diagram of the air guide cover structure of a specific embodiment of the present application.

[0017] 2-4 are schematic diagrams of the disassembly of a fan module according to a specific embodiment of the present application.

[0018] 2-5 are cross-sectional views of a fan module according to a specific embodiment of the present application.

[0019] 2-6 are schematic structural diagrams of an air duct according to a specific embodiment of the present application.

[0020] 2-7 is a cross-sectional view of the connection between the bracket and the fan assembly according to a specific embodiment of the present application.

[0021] FIG3-1 is a schematic diagram of the overall structure of a fan module according to a specific embodiment of the present application.

[0022] FIG3-2 is a schematic diagram of the exploded structure of a fan module according to a specific embodiment of the present application.

[0023] Figure 3-3 is a schematic structural diagram of a shell viewed from above in a specific embodiment of the present application.

[0024] 3-4 are schematic diagrams of the three-dimensional structure of the shell of a specific embodiment of the present application when viewed from the bottom.

[0025] 3-5 are cross-sectional schematic diagrams of a fan module according to a specific embodiment of the present application.

[0026] FIG4-1 is a schematic diagram of the overall structure of a fan module according to a specific embodiment of the present application.

[0027] FIG4-2 is a schematic diagram of the exploded structure of a fan module according to a specific embodiment of the present application.

[0028] FIG4-3 is a schematic diagram of the overall structure of a shell according to a specific embodiment of the present application.

[0029] FIG4-4 is a schematic structural diagram of a fan blade from a first perspective according to a specific embodiment of the present application.

[0030] 4-5 is a schematic structural diagram of a fan blade from a second perspective according to a specific embodiment of the present application.

[0031] 4-6 are schematic structural diagrams of a fan blade from a third perspective according to a specific embodiment of the present application.

[0032] FIG5-1 is a schematic diagram of the overall structure of a fan module according to a specific embodiment of the present application.

[0033] FIG5-2 is a schematic diagram of the exploded structure of a fan module according to a specific embodiment of the present application.

[0034] FIG5-3 is a cross-sectional schematic diagram of a fan module according to a specific embodiment of the present application.

[0035] FIG5-4 is a schematic diagram of the three-dimensional structure of a shell according to a specific embodiment of the present application.

[0036] Figure 5-5 is a schematic structural diagram of the connection between the shell and the rotating shaft in a specific embodiment of the present application.

[0037] 5-6 are schematic diagrams of the connection structure between the housing and the PCB circuit board according to a specific embodiment of the present application.

[0038] FIG6-1 is a schematic diagram of the overall structure of a fan module according to a specific embodiment of the present application.

[0039] FIG6-2 is a schematic diagram of the exploded structure of a fan module according to a specific embodiment of the present application.

[0040] FIG6-3 is a cross-sectional view of a fan module according to a specific embodiment of the present application.

[0041] FIG6-4 is a schematic structural diagram of a shell from a first perspective of a specific embodiment of the present application.

[0042] FIG6-5 is a schematic structural diagram of a shell from a second viewing angle according to a specific embodiment of the present application.

[0043] Figure 6-6 is a schematic structural diagram of a motor housing according to a specific embodiment of the present application.

[0044] Figures 6-7 are structural schematic diagrams of fan blades from a first perspective of a specific embodiment of the present application.

[0045] Figure 6-8 is a structural schematic diagram of a fan blade from a second perspective of a specific embodiment of the present application.

[0046] 6-9 are schematic structural diagrams of an assembly base from a first perspective according to a specific embodiment of the present application.

[0047] 6-10 are structural schematic diagrams of an assembly base from a second perspective according to a specific embodiment of the present application.

[0048] FIG7-1 is a schematic diagram of the overall structure of a fan module according to a specific embodiment of the present application.

[0049] FIG7-2 is a schematic diagram of the exploded structure of a fan module according to a specific embodiment of the present application.

[0050] FIG7-3 is a schematic structural diagram of a shell from a first perspective of a specific embodiment of the present application.

[0051] FIG7-4 is a schematic structural diagram of a shell from a second viewing angle according to a specific embodiment of the present application.

[0052] FIG7-5 is a schematic structural diagram of a fan blade from a first perspective according to a specific embodiment of the present application.

[0053] FIG7-6 is a schematic structural diagram of a fan blade from a second perspective according to a specific embodiment of the present application.

[0054] Figure 8-1 is a schematic structural diagram of the portable fan provided in this application.

[0055] Figure 8-2 is a schematic diagram of the exploded view of the portable fan provided in this application.

[0056] FIG8-3 is a schematic diagram of an exploded view of a portable fan provided in this application from another perspective.

[0057] Figure 8-4 is a cross-sectional view of the portable fan provided in this application.

[0058] FIG8-5 is a cross-sectional view of the portable fan from another perspective provided in this application.

[0059] Figure 8-6 is a schematic structural diagram of the cylinder provided in this application.

[0060] Figure 8-7 is a schematic structural diagram of the portable fan provided in this application with some parts removed.

[0061] Figure 8-8 is a cross-sectional view of some parts of the portable fan provided in this application after removal.

[0062] Figures 8-9 are exploded schematic diagrams of the portable fan air inlet cover assembly provided in this application.

[0063] FIG9-1 is a schematic structural diagram of a buffer component of a fan module provided in an embodiment of the present application.

[0064] FIG9-2 is a schematic structural diagram of a buffer body in a buffer of a fan module provided in an embodiment of the present application.

[0065] FIG9-3 is a schematic structural diagram of a limit member in a buffer member of a fan module provided in an embodiment of the present application.

[0066] FIG9-4 is a schematic structural diagram of an auxiliary buffer component in a buffer component of a fan module provided in an embodiment of the present application.

[0067] Figure 9-5 is a structural schematic diagram of a fan module provided in an embodiment of the present application.

[0068] Figure 9-6 is a schematic structural diagram of a handheld fan provided in an embodiment of the present application.

[0069] Figure 9-7 is a schematic diagram of the cross-sectional structure along the AA line in Figure 9-6 of this application.

[0070] FIG10-1 is a schematic diagram of the overall structure of a portable fan according to a specific embodiment of the present application.

[0071] FIG10-2 is a schematic diagram of the position structure of the holding portion and the fan assembly of a specific embodiment of the present application.

[0072] FIG10-3 is a schematic diagram of an exploded view of a fan assembly according to a specific embodiment of the present application.

[0073] FIG10-4 is a schematic diagram of the overall structure of a portable fan according to a specific embodiment of the present application.

[0074] FIG10-5 is a schematic diagram of an exploded view of an assembly tube and a fan assembly according to a specific embodiment of the present application.

[0075] Figure 10-6 is a schematic structural diagram of an assembly cylinder according to a specific embodiment of the present application.

[0076] Figure 10-7 is a schematic structural diagram of a connecting tube according to a specific embodiment of the present application.

[0077] Figure 10-8 is a schematic structural diagram of an air inlet ring according to a specific embodiment of the present application.

[0078] FIG11-1 is a three-dimensional schematic diagram of the portable fan of the present application.

[0079] Figure 11-2 is a three-dimensional schematic diagram of the portable fan of the present application.

[0080] Figure 11-3 is a cross-sectional view of the portable fan of the present application.

[0081] Figure 11-4 is an enlarged view of part A in Figure 11-3.

[0082] Figure 11-5 is a three-dimensional schematic diagram of the cylinder of this application.

[0083] FIG12-1 is a three-dimensional diagram of the high-speed motor of the present application.

[0084] Figure 12-2 is a three-dimensional exploded view of the high-speed motor of the present application.

[0085] Figure 12-3 is a cross-sectional exploded view of the high-speed motor of the present application.

[0086] Figure 12-4 is a cross-sectional view of the high-speed motor of the present application.

[0087] Figure 12-5 is a cross-sectional view of the high-speed motor of the present application when the barrel is removed. DETAILED DESCRIPTION

[0088] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0089] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element. The embodiments and features in the embodiments of this application may be combined with each other unless there is a conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0090] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0091] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0092] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification and in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the relevant listed items.

[0093] Solution 1 is shown in Figures 1-1 to 1-7.

[0094] Please refer to Figures 1-1 and 1-2. Figure 1-1 is a three-dimensional schematic diagram of the fan module of this embodiment; Figure 1-2 is a cross-sectional view of the fan module of this embodiment.

[0095] As shown in Figures 1-1 and 1-2, a fan module includes a housing 1, a bracket 2, and a fan assembly 3. The housing 1 is provided with an air inlet 133 and an air outlet 113, which are positioned opposite each other. The bracket 2 is disposed within the housing 1 and connected to the inner surface of the housing 1. The fan assembly 3 is disposed within the housing 1 and connected to the bracket 2. The inner surfaces of the housing 1 corresponding to the fan assembly 3 are configured to be arc-shaped.

[0096] A bracket 2 is provided in the housing 1, and the fan assembly 3 is fixed on the bracket 2 so that the fan assembly 3 and the inner wall of the housing 1 are relatively suspended. The inner surface of the housing 1 relative to the fan assembly 3 is constructed into an arc shape. When the fan assembly 3 rotates, the airflow flows from the fan assembly 3 to the inner surface of the housing 1. The arc structure of the arc inner surface can guide the airflow when the airflow contacts the inner surface of the housing 1. The guiding effect of the arc surface on the airflow in contact with it can reduce the energy loss when the airflow contacts the inner surface of the housing 1, thereby improving the air outlet efficiency of the fan. At the same time, since the structure of the arc inner surface can reduce the backflow of airflow, the air outlet efficiency of the fan is further improved.

[0097] Please refer to FIG. 1-3 , which is an exploded schematic diagram of the fan module of this embodiment.

[0098] As shown in Figures 1-3, in some embodiments, the housing 1 is composed of an upper housing 11, a side housing 12, and a lower housing 13. The air inlet 133 is provided on the lower housing 13, the air outlet 113 is provided on the upper housing 11, the bracket 2 is provided in the side housing 12, and the bracket 2 is connected to the inner surface of the side housing 12, and at least part of the structure of the fan assembly 3 is located in the lower housing 13. The three-section housing structure can reduce the difficulty of manufacturing the housing. However, the structure of the housing 1 is not limited to this. Depending on the specific application scenario, in some embodiments, the housing 1 can be integrally formed or can be composed of two shell structures spliced ​​together.

[0099] A bracket 2 is disposed within the housing 1 and includes a housing 21 and a plurality of air deflectors 22 connected to the housing 21. The housing 21 is hollow and contains a battery 27. Placing the battery 27 within the housing 21 eliminates the need for a handle for the battery 27, further simplifying the fan module's structure and reducing its size. However, the installation location of the battery 27 within the fan module is not limited to this. In some embodiments, the fan module is provided with a handle, and the battery 27 is installed within the handle.

[0100] The accommodating cavity 21 is configured in a cylindrical shape. However, the shape of the accommodating cavity 21 is not limited thereto, and the accommodating cavity 21 can be configured in a hemispherical, ellipsoidal, conical, triangular, or other shapes depending on the specific application scenario.

[0101] One end of a plurality of air deflectors 22 is connected to the inner surface of the housing 1, and the other ends of the air deflectors 22 are connected to the accommodating cavity 21. The fan assembly 3 is connected to the accommodating cavity 21. The arrangement of the air deflectors 22 enables the accommodating cavity 21 to be suspended within the housing 1. Two adjacent air deflectors 22, the outer wall of the accommodating cavity 21 between the two adjacent air deflectors 22, and the inner surface of the corresponding housing 1 together form an air duct.

[0102] Specifically, the number of the air deflectors 22 is 5. However, the number of the air deflectors 22 is not limited thereto, and depending on the specific application scenario, in some embodiments, the number of the air deflectors 22 can be 1, 2, 3, 4, 6, or more.

[0103] Multiple air guide plates 22 are arranged around the accommodating chamber 21, and the multiple air guide plates 22 are curved and extend in the direction from the air outlet 113 to the air inlet 133. Specifically, the multiple air guide plates 22 are curved near one end of the fan assembly 3, and the curvature of the curved end of the multiple air guide plates 22 is opposite to the rotation direction of the fan assembly 3. When the fan assembly 3 rotates, it drives the airflow in the direction of rotation of the fan assembly 3. Therefore, within the fan module, the rotation direction of the airflow is the same as the rotation direction of the fan assembly 3. The curvature of the curved end of the air guide plate 22 is opposite to the rotation direction of the fan assembly 3. This structure enables the airflow to form an obtuse angle greater than 90° when the air guide plate 22 contacts the airflow. Since the function of the air guide plate 22 is to guide the airflow toward the air outlet 113, the obtuse angle when the air guide plate 22 contacts the airflow can improve the air guiding efficiency of the air guide plate 22 and improve the air output efficiency of the fan module.

[0104] Please refer to FIG. 1-4 , which are three-dimensional schematic diagrams of the side shell from a top view of this embodiment.

[0105] As shown in Figures 1-4, the housing 1 is connected to the accommodating chamber 21, and an assembly slot 24 is provided at the connection position. The assembly slot 24 is provided with a control assembly 4. The connection between the housing 1 and the accommodating chamber 21 can be between the inner wall of the accommodating chamber 21 and the outer wall of the housing 1, or between the outer wall of the accommodating chamber 21 and the inner surface of the housing 1.

[0106] The assembly slot 24 includes a first slot surface 241, a second slot surface 242, and an inclined surface connecting the first slot surface 241 and the second slot surface 242. The length of the first slot surface 241 is greater than the length of the second slot surface 242. Therefore, from the direction of the air outlet 113 to the air inlet 133, the cross-sectional area of ​​the assembly slot 24 in the direction of the inclined surface extension becomes smaller and smaller, so that one end of the assembly slot 24 forms a wind guide angle (not marked). The structure of the wind guide angle can effectively reduce the space occupied by the assembly slot 24 in the housing 1 and increase the area of ​​the air duct in the housing 1. At the same time, the triangular structure can reduce the resistance to the airflow by the wind guide angle and improve the air outlet efficiency of the fan module. The inclination direction of the inclined surface is the same as the curvature direction of the air guide plate 22, which is also conducive to the wind guide angle to guide the air. In some embodiments, the inward concave first slot surface 241 of the wind guide angle is formed in the same curvature as the air guide plate 22, playing the same role as the air guide plate 22, further improving the wind guide efficiency of the wind guide angle.

[0107] The air guide angle is configured as a triangle, but the shape of the air guide angle is not limited thereto. Depending on the specific application scenario, the air guide angle can be configured as a crescent shape.

[0108] The control assembly 4 is fixed within the assembly slot 24 by plugging. A first stopper 243 extending along the vertical length of the first slot surface 241 is provided on the first slot surface 241. A second stopper 244 extending along the second slot surface 242 is provided on the second slot surface 242. A third stopper 245 and a fourth stopper 246 are arranged side by side on the inclined surface. The first stopper 243, the second stopper 244, the third stopper 245, and the fourth stopper 246 are used to prevent the control assembly 4 from moving toward the accommodating cavity 21. The fixing method of the control assembly 4 and the assembly slot 24 is not limited to plugging. Depending on the specific application scenario, in some embodiments, the fixing method of the control assembly 4 and the assembly slot 24 can be (but not limited to) adhesive fixing or interference fit fixing.

[0109] The location of the assembly slot 24 is not limited to the side housing 12. For example, when the fan module is integrally formed with the housing 1, the assembly slot 24 can be provided on the surface of the housing 1. When the housing 1 is a two-section structure, the assembly slot 24 can be provided on either section.

[0110] The control assembly 4 includes a rotary encoder 41, a charging port 42, and a control PCB 43, wherein the rotary encoder 41 and the charging port 42 are fixed to the control PCB 43. The rotation of the rotary encoder 41 is used to infinitely adjust the speed of the fan assembly 3. At the same time, the pressing function of the rotary encoder 41 is used to turn the fan assembly 3 on or off. The control PCB circuit has circuit pins (not marked), which are electrically connected to the battery 27 and the fan assembly 3 respectively through wires.

[0111] The control assembly 4 also includes a gusset plate 44, which is fastened to the rotary encoder 41, the charging port 42, and the control PCB 43. The gusset plate 44 has corresponding openings for the rotary encoder 41 and the charging port 42, exposing the rotary encoder 41 and the charging port 42. The provision of the gusset plate 44 facilitates the installation of the control assembly 4.

[0112] A wiring hole 26 is formed on the end surface of the accommodating chamber 21 that connects to the fan assembly 3. The location of the wiring hole 26 can prevent the wires from appearing in the air duct and obstructing the airflow, thereby improving the smoothness of the airflow inside the fan module and protecting the safety of the wires.

[0113] Please refer to FIG1-5, which is a three-dimensional schematic diagram of the side shell of this embodiment from a bottom view.

[0114] As shown in Figures 1-3 and 1-5 , a connecting post 23 is provided on one end of the accommodating chamber 21 connected to the fan assembly 3, facing the air outlet 113. The fan assembly 3 is connected to the connecting post 23. The connecting post 23 is cylindrical in shape, but the structure of the connecting post 23 is not limited to this. Depending on the specific application scenario, the shape of the connecting post 23 can be (but is not limited to) a prismatic or conical shape.

[0115] The fan assembly 3 includes: fan blades 31, a magnetic ring 312, a coil 32 and a rotating shaft 35. The coil 32 is arranged on the connecting column 23, the magnetic ring 312 is arranged in the fan blades 31, and the magnetic ring 312 is sleeved on the coil 32. One end of the rotating shaft 35 is connected to the fan blades 31, and the other end of the rotating shaft 35 passes through the magnetic ring 312 and the coil 32 and is connected to the connecting column 23.

[0116] The coil 32 is sleeved on the connecting post 23 and fixed to the connecting post 23 by interference fit. The fixing method of the coil 32 and the connecting post 23 is not limited to this. In some embodiments, the coil 32 can also be fixed to the connecting post 23 by gluing.

[0117] Please refer to FIG. 1-6 , which is an exploded schematic diagram of the fan assembly of this embodiment.

[0118] As shown in Figures 1-3 and 1-6, a storage cavity 311 is defined on the fan blade 31. A magnetic ring 312 is secured within the storage cavity 311 by an interference fit or adhesive bonding. The magnetic ring 312 is then sleeved onto the coil 32, meaning that the coil 32 is also located within the storage cavity 311 of the fan blade 31. The construction of the fan assembly 3 concentrates the power of the fan assembly 3 within the fan blade 31, significantly reducing the size of the fan assembly 3 and making the fan module more compact.

[0119] The inner surface of the accommodating cavity 21 at a position corresponding to the connecting column 23 is recessed along the extending direction of the connecting column 23 to form an installation cavity 25 . The installation cavity 25 is provided with an installation hole 231 , and one end of the rotating shaft 35 connected to the connecting column 23 is inserted into the installation hole 231 .

[0120] The shape of the mounting cavity 25 is configured to be conical. However, the shape of the mounting cavity 25 is not limited thereto, and depending on the specific application scenario, the shape of the mounting cavity 25 can be (but not limited to): hemispherical, cylindrical, or prismatic.

[0121] The mounting hole 231 is opened at the end of the mounting cavity 25, and the connecting column 23 includes a sleeve 33. The sleeve 33 passes through the mounting hole 231 and is inserted into the mounting cavity 25. One end of the rotating shaft 35 connected to the connecting column 23 passes through the sleeve 33 and is inserted into the mounting cavity 25. A slot 351 is opened at one end of the rotating shaft 35 connected to the connecting column 23. A retaining spring 34 that cooperates with the slot 351 is provided in the mounting cavity 25 to lock the rotating shaft 35 in the mounting hole 231.

[0122] The shaft sleeve 33 is configured to be cylindrical. However, the shape of the shaft sleeve 33 is not limited thereto, and depending on the specific application scenario, in some embodiments, the shaft sleeve 33 can be (but not limited to): prismatic or spindle-shaped.

[0123] Since the connection between the retaining spring 34 and the rotating shaft 35 is performed in the installation cavity 25 , the tapered structure of the installation cavity 25 can make the installation of the retaining spring 34 more convenient.

[0124] The sleeve 33 can be completely disposed within the mounting cavity 25, or one end can be inserted into the mounting cavity 25 and the other end can extend outside the mounting cavity 25. When the sleeve 33 is completely disposed within the mounting cavity 25, the coil 32 is sleeved onto the connecting post 23. When only one end of the sleeve 33 is inserted into the mounting cavity 25, the coil 32 can be sleeved onto the sleeve 33.

[0125] The sleeve 33 is made of metal or alloy. The sleeve 33 effectively strengthens the connecting shaft, preventing deformation from external forces. When the coil 32 is sleeved onto the connecting post 23, the sleeve's strong resistance to extrusion enhances the interference fit between the coil 32 and the sleeve.

[0126] As shown in Figures 1-2, the lower housing 13 includes a bottom surface 132 and a first side 131 connected to the bottom surface 132. An air inlet 133 is provided on the bottom surface 132, and the area of ​​the air inlet 133 is smaller than that of the bottom surface 132. The smooth transition between the bottom surface 132 and the first side 131 forms an arc on the inner surface of the lower housing 13. The area of ​​the air inlet 133 is smaller than that of the bottom surface 132, and the smooth transition between the bottom surface 132 and the first side 131 creates an arc at the junction of the two. The above-mentioned structure of the lower housing 13 enables the surface of the lower housing 13 to guide airflow. At the same time, the area of ​​the air inlet 133 is smaller than that of the bottom surface 132, which allows the edge of the bottom surface 132 to intercept internal airflow, reducing backflow and improving the air output efficiency of the fan module.

[0127] The air inlet 133 is provided with a filter cover 6, which can prevent foreign objects such as clothes or hair from entering the fan module when the user is using the fan. It can also prevent hard foreign objects from entering the fan module and damaging the fan module.

[0128] The filter cover 6 is constructed in a circular shape and is provided with regularly arranged hollow grids for air intake. The shape of the filter cover 6 is not limited thereto. Depending on the specific application scenario, the shape of the filter cover 6 can be arbitrarily set to (but not limited to): square, oval, prismatic, etc.

[0129] Please refer to Figure 1-7, which is a three-dimensional schematic diagram of the upper shell in this embodiment.

[0130] As shown in Figures 1-7, the upper housing 11 includes a top surface 112 and a second side 111 connected to the top surface 112. An air outlet 113 is provided on the top surface 112, with a smooth transition between the top surface 112 and the second side 111. The fan module also includes a housing cover 115, which is positioned above the housing cavity 21. The housing cover 115 and the upper housing 11 are connected by a plurality of air outlet plates 114, which correspond one-to-one with the plurality of air guide plates 22.

[0131] The accommodating cover 115 includes: a cover wall and a visible window 116 opened on the cover wall. The cover wall and the visible window 116 smoothly transition to form an arc surface. Multiple air outlet plates 114 extend along the arc surface of the cover wall from the radial direction of the cover wall to the axial direction of the cover wall.

[0132] The number of air outlet plates 114 corresponds to the number of air guide plates 22, and the air outlet plates 114 and the air guide plates 22 have the same shape at their contact points. The air outlet plates 114 divide the air outlet 113 into multiple trapezoidal air ducts. These ducts are composed of a portion of the outer surface of the containment cover 115, the inner surface of the upper housing 11, and two adjacent air outlet plates 114. Because the outer surface of the containment cover 115 and the inner surface of the upper housing 11 are both curved, they reduce airflow resistance and improve the fan module's air output efficiency.

[0133] The display assembly 5 is disposed between the housing cover 115 and the housing cavity 21. A see-through panel 7 is provided on the viewing window 116 for viewing the display assembly 5. The display assembly 5 includes a display 51 and a display PCB 52. The display 51 can be, but is not limited to, a grid display 51 or a liquid crystal display 51. The display assembly 5 is connected to the controller assembly via wires. The see-through panel 7 can be, but is not limited to, made of glass or translucent plastic.

[0134] An assembly cover is also provided between the accommodating cover 115 and the upper shell 11, and the assembly cover is buckled on the assembly cavity. The assembly cover is provided between the two air outlet plates 114, and the assembly cover is provided along the

[0135] The inner surface of the upper housing 11 is curved, as is the surface of the housing cover 115. The curved surfaces of the housing cover 115 and the upper housing 11 form a triangular shape. The structure of the housing cover 115 reduces obstruction to the airflow of the air outlet 113 and increases the air outlet area of ​​the air outlet 113.

[0136] In this embodiment, two PCB circuit boards are provided: a control PCB circuit board 43 and a display PCB circuit board 52. Therefore, there are two wiring methods inside the fan module in this embodiment. The first method is to connect the battery 27 and the fan assembly 3 to the control PCB circuit board 43 with wires, and the control PCB circuit board 43 is then connected to the display PCB circuit board 52 with wires. The second method is to connect the battery 27 and the fan assembly 3 to the display PCB circuit board 52 with wires, and the control PCB circuit board 43 is then connected to the display PCB circuit board 52 with wires. In both wiring methods, the wires corresponding to the fan assembly 3 extend into the interior of the accommodating cavity 21 through the wiring holes 26.

[0137] The fan module in this embodiment can be used as a component of a handheld fan, a desktop fan, a floor fan, a bladeless fan or an industrial fan, etc. In some application scenarios, the fan module can be used alone as a handheld fan.

[0138] Option 2 is shown in Figures 2-1 to 2-7.

[0139] Example 1

[0140] Please refer to FIG2-1, which is a schematic diagram of the overall structure of the fan module of this embodiment.

[0141] As shown in Figure 2-1, a fan module includes an air scoop 2, an air duct 1, and a fan assembly 3. The air scoop 2 is provided with an air inlet 21; the air duct 1 is provided with an air outlet 11 corresponding to the air inlet 21, and the end of the air duct 1 facing away from the air outlet 11 is connected to the end of the air scoop 2 facing away from the air inlet 21. The fan assembly 3 is connected to the air duct 1, with at least a portion of the fan assembly 3 extending out of the air duct 1 and into the air scoop 2.

[0142] In this embodiment, the air scoop 2 and the air duct 1 are connected by snapping. However, the connection method between the air scoop 2 and the air duct 1 is not limited to this. Depending on the specific application scenario, in some embodiments, the air scoop 2 and the air duct 1 can also be connected by (but not limited to): gluing, overlapping, or hot pressing fusion. In some embodiments, the air scoop 2 and the air duct 1 can also be integrally formed.

[0143] Please refer to FIG2-2, which is a schematic structural diagram of the flexible shell of this embodiment.

[0144] As shown in Figure 2-2, in some embodiments, the air duct 2 and the air duct 1 are further provided with a flexible shell 4 on the outside, and the flexible shell 4 is specifically a silicone shell. However, the material made of the flexible shell 4 is not limited thereto. Depending on the specific application scenario, in some embodiments, the material made of the flexible shell 4 can be (but not limited to): foam, paper or fabric. The provision of the flexible shell 4 can provide better protection for the air duct 2, the air duct 1 and the fan assembly 3. At the same time, when the fan module is used as a modular accessory of the fan, the deformation ability of the flexible shell 4 can adapt well to different fan casing sizes, and the larger friction coefficient on the surface of the flexible shell 4 can also make the fan module more firmly connected to the fan casing.

[0145] When the flexible shell 4 is sleeved on the outside of the air duct 2 and the air duct 1, the air duct 2 and the air duct 1 can be connected in an overlapping manner.

[0146] The outer surface of the flexible shell 4 is raised to form a plurality of raised rings 41. The plurality of raised rings 41 are arranged at intervals along the vertical direction of the flexible shell 4. For example, three raised rings 41 are provided on the flexible shell 4, respectively located at both ends and the middle position of the flexible shell 4. However, the number and arrangement of the raised rings 41 on the flexible shell 4 are not limited thereto. Depending on the specific application scenario, in some embodiments, the number of raised rings 41 on the flexible shell 4 can be (but not limited to): 2, 4, 5, 6 or more. The arrangement between the raised rings 41 can be (but not limited to): spaced arrangement, equidistant arrangement, concentrated arrangement, etc. The provision of the raised rings 41 can reduce the contact area between the fan module and the fan housing, improve the assembly efficiency of the fan module and the fan housing, and at the same time, provide the raised rings 41 with a larger deformation space, so that they can adapt to a wider range of fan housing sizes.

[0147] In some embodiments, the outer surface of the flexible housing 4 is formed with a plurality of raised points 43, which are evenly distributed on the outer surface of the flexible housing 4. The provision of the raised points 43 can reduce the contact area between the fan module and the fan housing, thereby improving the assembly efficiency of the fan module and the fan housing. At the same time, the raised points 43 have a larger deformation space, which can accommodate a wider range of fan housing sizes.

[0148] In some embodiments, the outer surface of the flexible shell 4 is raised to form a plurality of raised rings 41 and a plurality of raised points 43, and a plurality of raised points 43 are provided between two adjacent raised rings 41 in the plurality of raised rings 41. The number of raised points 43 is much greater than the number of raised rings 41, and the apex of the raised point 43 is flush with the outer surface of the raised ring 41. Compared with the structure of providing a raised ring 41 or a raised point 43 alone, the combined configuration of the raised ring 41 and the raised point 43 increases the contact area between the flexible shell and the fan shell, and enhances the stability of the connection. The spacing between the raised ring 41 and the raised point 43 provides the raised ring 41 and the raised point 43 with a larger deformation space, which can adapt to a wider range of fan shell sizes.

[0149] In some embodiments, the shell that is sleeved on the outside of the air guide cover 2 and the air guide pipe 1 can be a metal shell or a hard plastic shell.

[0150] Please refer to Figure 2-3, which is a schematic diagram of the air guide cover structure of this embodiment.

[0151] As shown in Figures 2-3, in this embodiment, the air scoop 2 is constructed as a cylindrical barrel, and is concave on the outside of the air scoop 2, so that the inner surface of the air scoop 2 is raised to form a necking ring 22. The necking ring 22 is arranged at a position corresponding to the end of the fan blade assembly 32 facing the air inlet 21. The necking ring 22 divides the air scoop 2 into two trumpet-shaped barrel structures, namely the first cover body 23 and the second cover body 24, wherein the air inlet 21 is opened on the first cover body 23, and the second cover body 24 is connected to the air duct 1. There is a smooth transition between the first cover body 23 and the necking ring 22, and there is also a smooth transition between the second cover body 24 and the necking ring 22. The hub 321 and the multiple blades 322 of the fan blade assembly 32 are all suspended in the second cover body 24, and the inner surface of the second cover body 24 corresponding to the hub 321 is configured to be arc-shaped. The inner surface structure of the air scoop 2 is smooth, which has a good guiding effect on the airflow. The setting of the necking ring 22 pressurizes the airflow entering the wind guide hood 2, making the airflow entering the wind guide hood 2 have a higher initial velocity and a faster airflow speed. The necking ring 22 is set at a position corresponding to the end of the fan blade assembly 32 facing the air inlet 21, which can block and guide the reverse airflow generated when the fan blade assembly 32 rotates, thereby improving the air outlet efficiency of the fan module. The inner surface of the second cover body 24 corresponding to the hub 321 is configured to be arc-shaped, which can guide the lateral airflow generated by the rotation of the blades 322, so that the airflow is diverted from lateral collision with the surface of the second cover body 24 to the direction of the air outlet 11, thereby improving the air outlet efficiency.

[0152] In some embodiments, a plurality of reinforcing ribs 25 are provided on the outer surfaces of the first cover 23 and the second cover 24. Each reinforcing rib 25 is connected to the first cover 23, the neck ring 22, and the second cover 24. The number of reinforcing ribs 25 is two, but the number of reinforcing ribs 25 is not limited to this. Depending on the specific application scenario, in some embodiments, the number of reinforcing ribs 25 can be (but is not limited to) three, four, five, or more.

[0153] The first cover body 23, the neck ring 22 and the second cover body 24 can be integrally formed or manufactured separately and then spliced ​​together.

[0154] Please refer to Figures 2-4 and 2-5. Figure 2-4 is a schematic diagram of the disassembly of the fan module of this embodiment; Figure 2-5 is a cross-sectional view of the fan module of this embodiment.

[0155] As shown in Figures 2-4 and 2-5, the fan assembly 3 includes a motor assembly 31 and a blade assembly 32. One end of the motor assembly 31 is connected to the air duct 1, and the fan assembly 3 is sleeved on the motor assembly 31. The blade assembly 32 includes a hub 321, a connecting ring 323, and a plurality of blades 322. The plurality of blades 322 are arranged around the hub 321 along the circumference of the hub 321. One end of the connecting ring 323 is connected to the hub 321, and the other end of the connecting ring 323 is sleeved on the motor assembly 31. The motor assembly 31 includes a rotating shaft 313, a coil 311, and a magnetic ring 312. The storage tube 12 is provided with a connecting portion 5. One end of the rotating shaft 313 is connected to the storage tube 12, and the other end of the rotating shaft 313 is connected to the blade assembly 32. The coil 311 is provided on the connecting portion 5, and the magnetic ring 312 is provided on the blade assembly 32, and the magnetic ring 312 is sleeved on the coil 311.

[0156] In this embodiment, the hub 321 is conical. This conical hub 321 increases the distance between the hub 321 and the inner edge of the first cover 23, thereby increasing the area of ​​the blades 322 and improving the air output efficiency of the fan module. However, the configuration of the hub 321 is not limited to this. Depending on the specific application scenario, in some embodiments, the hub 321 can be configured as a hemispherical, cylindrical, or prismatic shape.

[0157] The plurality of blades 322 are curved and extended along the conical surface of the hub 321 from the direction of the air inlet 21 toward the direction of the air outlet 11, and the bending direction of the plurality of blades 322 is opposite to the direction of rotation of the fan blade assembly 32. Each of the plurality of blades 322 includes: a first end 322a adjacent to the air outlet 11 and a second end 322b corresponding to the first end 322a, and the width of the first end 322a is greater than the width of the second end 322b. This construction of the blades 322 enables the first end 322a to have a larger contact area with the airflow when cutting the wind, thereby exerting a stronger restraining force on the airflow and pushing more airflow into the fan blade airway formed by the two adjacent blades 322. As the airflow flows from the first end 322a to the second end 322b, the width of the blade 322 gradually decreases, and the ability of the blade 322 to restrain the airflow gradually decreases, releasing part of the energy of the airflow, reducing the kinetic energy of the airflow outflowing from the fan blade and the second cover 24 and the air guide duct 1, reducing the loss of airflow energy, and improving the air outlet efficiency.

[0158] The spacing between adjacent blades 322 gradually increases from the air inlet 21 toward the air outlet 11. The spacing between adjacent blades 322 increases as the airflow flows. This gradually releases the energy of the airflow as it flows, reducing the kinetic energy of the airflow's collisions with the second cover 24 and the air guide housing 14, minimizing airflow energy loss, and improving airflow efficiency.

[0159] The hub 321 and the plurality of blades 322 are located within the air scoop 2. One end of the connecting ring 323, which is sleeved around the motor assembly 31, extends into the air duct 1. The end of the connecting ring 323, which is connected to the hub 321, is located within the air scoop 2. Specifically, the hub 321 and the plurality of blades 322 are located within the first housing 23. A portion of the connecting ring 323 extends into the air duct 1. The other end of the connecting ring 323 is connected to the bottom surface of the hub 321.

[0160] There is a gap between the bottom surface of the hub 321 and the position corresponding to the air duct 1 to facilitate the rotation of the fan blade assembly 32.

[0161] In this embodiment, the number of blades 322 is 5. However, the number of blades 322 is not limited thereto. Depending on the specific application scenario, in some embodiments, the number of blades 322 can be (but not limited to): 2, 3, 4, 6, or more.

[0162] Please refer to FIG2-6, which is a schematic structural diagram of the air duct of this embodiment.

[0163] The air guide duct 1 includes: an air guide shell 14, a storage tube 12 and multiple air guide plates 13. The storage tube 12 is arranged in the air guide shell 14. The multiple air guide plates 13 are arranged around the circumference of the storage tube 12, and one end of the multiple air guide plates 13 is connected to the inner surface of the air guide shell 14, and the other end of the multiple air guide plates 13 is connected to the storage tube 12. The air guide shell 14 is connected to the air guide cover 2, and the motor assembly 31 is connected to the storage tube 12. The air guide shell 14, the storage tube 12 and the multiple air guide plates 13 enclose an air outlet 11.

[0164] The air guide shell 14 is constructed in a tubular shape, one end of which is connected to the second cover body 24 of the air guide cover 2, and the other end of the air guide shell 14 is provided with an air outlet 11. A storage cylinder 12 is provided inside the air guide shell 14, and the storage cylinder 12 is suspended in the center of the air guide shell 14. A plurality of air guide plates 13 are respectively connected to the air guide shell 14 and the storage cylinder 12. A gap is left between the air guide shell 14 and the storage cylinder 12 for air flow. The number of air guide plates 13 is specifically 7. However, the number of air guide plates 13 is not limited thereto. Depending on the specific application scenario, in some embodiments, the number of air guide plates 13 can be 2, 3, 4, 5, 6, 8 or more. The air guide plates 13 divide the air outlet 11 into a plurality of arc-shaped air ducts.

[0165] Multiple air guide plates 13 are bent near one end of the fan assembly 3, and the bending direction of the bent ends of the multiple air guide plates 13 is opposite to the rotation direction of the fan assembly 3. The bending direction of the air guide plates 13 is opposite to the rotation direction of the fan assembly 3. When the fan assembly 3 rotates, it will drive the airflow to rotate in the same direction. At this time, the bending direction of the air guide plates 13 is opposite to the rotation direction of the airflow. When the airflow rotates, it contacts and collides with the curved part of the air guide plates 13. Due to the opposite directions, the angle between the airflow and the curved part of the air guide plates 13 when they contact is greater than 90 degrees. The airflow contacts the air guide plates 13 at a larger angle, which can reduce the kinetic energy loss of the airflow contacting the air guide plates 13. During the contact process at a larger angle, the air guide plates 13 have a significant guiding effect on the airflow, resulting in less energy loss and greatly improved air outlet efficiency.

[0166] The storage tube 12 is cylindrical in shape, and a top cover 122 is provided on the surface of the storage tube 12 on the side facing the air outlet 11. The top cover 122 can be integrally formed with the storage tube 12, or manufactured separately and then joined together. A storage cavity 121 is defined on the side of the storage tube 12 that connects to the motor assembly 31, and one end of the connecting ring 323 of the fan blade assembly 32 extends into the storage tube 12.

[0167] The hub 321 and multiple blades 322 are positioned between the neck ring 22 and the storage tube 12. The hub 321 acts as a shield for the storage tube 12, preventing airflow from the blades 322 from flowing into the storage tube 12 and causing unnecessary energy loss, thereby improving airflow efficiency. The neck ring 22 reduces backflow within the fan module, further improving airflow efficiency.

[0168] In some embodiments, the cross-sectional area of ​​the end of the hub 321 connected to the connecting ring 323 is greater than or equal to the cross-sectional area of ​​the storage tube 12. Because the hub 321 acts as a shield between the storage tube 12 and the storage cavity 121, when the cross-sectional area of ​​the end of the hub 321 connected to the connecting ring 323 is greater than or equal to the cross-sectional area of ​​the storage tube 12, the hub 321 can be reduced to the maximum extent, and the airflow flowing through the blades 322 collides with the edge of the storage tube 12. This can also prevent the airflow from flowing back into the storage cavity 121 and causing unnecessary energy loss, further improving the air outlet efficiency.

[0169] Please refer to FIG2-7, which is a cross-sectional view of the connection between the bracket and the fan assembly in this embodiment.

[0170] As shown in Figure 2-7, the connecting part 5 includes: a bracket 51, the end of the storage tube 12 bulges inward to form an assembly frame 124, and an assembly hole 125 is opened on the assembly frame 124 to pass through the assembly frame 124. One end of the bracket 51 is inserted into and passes through the assembly hole 125, and the end of the bracket 51 passing through the assembly hole 125 is connected to the rotating shaft 313.

[0171] Specifically, the upper cover 122 of the storage tube 12 is raised inward to form an assembly frame 124. The assembly frame 124 is provided with an assembly hole 125 extending therethrough. The assembly frame 124 is configured in a conical shape. The shape of the assembly frame 124 is not limited thereto. Depending on the specific application scenario, in some embodiments, the assembly frame 124 can be (but not limited to) annular or prismatic.

[0172] In some embodiments, the bracket 51 and the assembly frame 124 are made of the same material and can be integrally manufactured. In some embodiments, the bracket 51 is a metal tube and the bracket 51 and the assembly frame 124 are combined by injection molding. In some embodiments, the bracket 51 and the assembly frame 124 are connected by a snap-fit ​​connection.

[0173] The connecting portion 5 also includes: a first sleeve 54, a second sleeve 53, and a retaining spring 52. The bracket 51 is provided with a mounting hole 511 that passes through the bracket 51. The mounting hole 511 has a raised interior to form a stop ring 512. The first sleeve 54 and the second sleeve 53 are respectively disposed at opposite ends of the stop ring 512. The retaining spring 52 is disposed within the mounting hole 511 and overlaps the second sleeve 53. One end of the rotating shaft 313 passes through the first sleeve 54 and the second sleeve 53 and is connected to the retaining spring 52. The end of the rotating shaft 313 connected to the retaining spring 52 is provided with a retaining groove 316 that cooperates with the retaining spring 52. The first sleeve 54 and the second sleeve 53 are made of metal. The provision of the first sleeve 54 and the second sleeve 53 improves the rotation efficiency of the rotating shaft 313 of the motor assembly 31 and also prevents wear and tear caused by contact between the rotating shaft 313 and the mounting hole 511.

[0174] The magnetic ring 312 of the motor assembly 31 is sleeved over the position of the bracket 51 where the first sleeve 54 is provided. Since the first sleeve 54 is made of metal, it can increase the physical strength of the bracket 51. Sleeving the magnetic ring 312 over the position of the bracket 51 where the first sleeve 54 is provided provides a more stable connection between the magnetic ring 312 and the bracket 51. The magnetic ring 312 and the bracket 51 are connected by an interference fit, but the connection method is not limited to this. Depending on the specific application scenario, in some embodiments, the magnetic ring 312 can be connected to the bracket 51 by snapping or gluing.

[0175] Specifically, the first sleeve 54, the second sleeve 53, and the bracket 51 are connected by an interference fit. However, the connection method is not limited to this. Depending on the specific application scenario, in some embodiments, the first sleeve 54, the second sleeve 53, and the bracket 51 can be fixed by snapping or gluing.

[0176] In some embodiments, the first bushing 54 and the second bushing 53 can be replaced with bearings.

[0177] In some embodiments, the motor assembly 31 further comprises: a motor housing 314, the motor housing 314 being sleeved on the magnetic ring 312, the connecting ring 323 being sleeved on the motor housing 314, and one end of the rotating shaft 313 connected to the fan blade assembly 32 passing through the motor housing 314. The motor assembly 31 further comprises: a conical coil spring 315, the conical coil spring 315 being sleeved on the rotating shaft 313, one end of the conical coil spring 315 being connected to the motor housing 314, and the other end of the conical coil spring 315 being connected to the first shaft sleeve 54. The provision of the conical coil spring 315 enables the fan blade assembly 32 to have a certain buffer displacement space when being impacted by an external force, thereby well protecting the fan blade assembly 32. At the same time, it is also possible to avoid the vibration generated when the fan blade assembly 32 rotates, and rigidly transmit it to the entire fan module, causing greater vibration, and also to reduce the wind noise caused by the rotation of the fan blade assembly 32.

[0178] In some embodiments, the magnetic ring 312 is composed of a plurality of magnetic segments.

[0179] In some embodiments, when the motor assembly 31 is not provided with a motor housing 314 , one end of the conical coil spring 315 can be directly connected to the hub 321 , and the other end can be connected to the first sleeve 54 .

[0180] The conical coil spring 315 is connected to the motor housing 314 or the wheel hub 321 by (but not limited to): overlapping or gluing. The conical coil spring 315 is connected to the first sleeve 54 by (but not limited to): overlapping, welding or gluing.

[0181] In some embodiments, a wiring hole 123 is provided on the upper cover 122 of the storage tube 12, through which the wire 6 is passed to connect to the coil 311. The wire 6 is directly inserted into the storage cavity 121 through the wiring hole 123 to connect to the coil 311, thereby avoiding the need for the wire 6 to be routed outside the storage tube 12, reducing obstruction to the airflow inside the fan module and improving air output efficiency.

[0182] In this embodiment, the fan module includes an air scoop 2 and an air duct 1. Part of the fan assembly 3 is disposed within the air duct 1, while the other part extends into the air scoop 2. This layout structure enables the fan module to have higher space utilization, a more compact structure, and a more compact size. At the same time, the air flow channel of the fan module, which is composed of the air scoop 2 and the air duct 1, can guide the airflow entering therein, so that the airflow can flow more efficiently from the air inlet 21 to the air outlet 11. The partial arrangement of the fan assembly 3 within the air duct 1 reduces the directly exposed portion of the fan assembly 3, thereby reducing the contact area between the fan assembly 3 and the airflow, reducing the obstruction to the airflow, and improving the air outlet efficiency.

[0183] Example 2

[0184] A blowing device includes the fan module of embodiment 1, wherein the fan module serves as a core module component for assembling the blowing device. The fan module is used for controlling the airflow in the blowing device.

[0185] It should be noted that the blowing device in this embodiment includes (but is not limited to): bladeless fans, desktop fans, floor fans, spherical fans, neck fans, handheld fans, industrial fans, air conditioners, hair dryers, and other products that require air circulation. The fan module in Example 1 is assembled inside the housing of the above products.

[0186] The fan module of the blowing device in this embodiment includes an air scoop 2 and an air duct 1. Part of the structure of the fan assembly 3 is arranged in the air duct 1, and the other part extends into the air scoop 2. This layout structure can make the fan module have higher space utilization, more compact structure, and more compact size. At the same time, the air flow channel of the fan module composed of the air scoop 2 and the air duct 1 can guide the air flow entering therein, so that the air flow can flow more efficiently from the air inlet 21 to the air outlet 11. The partial structure of the fan assembly 3 is arranged in the air duct 1, which reduces the directly exposed part of the fan assembly 3, thereby reducing the contact area between the fan assembly 3 and the air flow, reducing the obstruction to the air flow, and improving the air outlet efficiency.

[0187] Option 3 is shown in Figures 3-1 to 3-5.

[0188] Example 1

[0189] Please refer to Figures 3-1 and 3-2. Figure 3-1 is a schematic diagram of the overall structure of the fan module of this embodiment; Figure 3-2 is a schematic diagram of the exploded structure of the fan module of this embodiment.

[0190] As shown in Figures 3-1 and 3-2, a fan module includes: a housing 1, a connector 2, a fan motor 3, fan blades 4, and a buffer 5. The connector 2 is disposed within the housing 1; the fan motor 3 is disposed within the housing 1, with one end of the fan motor 3 connected to the connector 2; the fan blades 4 are disposed within the housing 1, and are sleeved on the fan motor 3; and the buffer 5 is disposed between the fan blades 4 and the connector 2.

[0191] In this embodiment, the housing 1 is cylindrical, and a cylindrical air cavity 11 is defined within the cylinder. However, the shape of the housing 1 is not limited thereto. Depending on the specific application scenario, in some embodiments, the shape of the housing 1 can be a triangle, a quadrilateral, a pentagon, other polygons, or other regular shapes.

[0192] Please refer to FIG3-3, which is a schematic diagram of the structure of the shell of this embodiment from a top view.

[0193] As shown in FIG3-3 , in this embodiment, the housing 1 is provided with an air cavity 11 extending through its upper and lower surfaces. The air cavity 11 is cylindrical. However, the shape of the air cavity 11 is not limited thereto. Depending on the specific application scenario, in some embodiments, the air cavity 11 can be shaped like a star, a heart, a racetrack, or a polygon.

[0194] Please refer to FIG3-4, which is a schematic diagram of the three-dimensional structure of the shell of this embodiment when viewed from the bottom.

[0195] As shown in Figures 3-4, the connector 2 includes a connecting ring 21, a connecting column 23, and a plurality of connecting plates 22. The plurality of connecting plates 22 are arranged around the connecting ring 21, with one end of each connecting plate 22 connected to the inner surface of the housing 1, and the other end of each connecting plate 22 connected to the connecting ring 21.

[0196] The connecting column 23 is arranged on the side of the connecting ring 21 facing the fan blades 4. The connecting column 23 includes: a connecting cone 231 and a connecting cylinder 232. The bottom surface of the connecting cone 231 is arranged on the connecting ring 21, and the top surface of the connecting cone 231 is connected to the connecting cylinder 232. The coil 32 is sleeved on the connecting cylinder 232.

[0197] The structure of the connecting column 23 enables the connecting cone 231 to play a limiting role, and acts as a stop for the fan assembly mounted on the connecting cylinder 232, thereby improving the assembly efficiency of the coil 32.

[0198] In some embodiments, the connecting pillar 23 can also be configured as a prism or a circular pillar.

[0199] The arrangement of the connecting column 23 enables the fan motor 3 and the fan blades 4 to be suspended inside the housing 1 , so that the fan motor 3 and the fan blades 4 can rotate more smoothly inside the housing 1 .

[0200] The arrangement of the connecting ring 21 and the plurality of connecting plates 22 allows the connecting ring 21 to be suspended inside the housing 1. At the same time, the gaps between the connecting plates 22 can serve as air ducts for the air flow inside the housing 1, thereby restricting the air flow inside the housing 1.

[0201] The end of each connecting plate 22 facing the fan blade 4 is bent and extended toward the fan blade 4 to form an air guide plate 24 . The bending direction of the air guide plate 24 is opposite to the rotation direction of the fan blade 4 .

[0202] The end of each connecting plate 22 facing the fan blade 4 is bent and extended to form an air guide plate 24. The bending direction of the air guide plate 24 is opposite to the rotation direction of the fan assembly. When the fan blade 4 rotates, it will drive the airflow to rotate in the same direction. At this time, the bending direction of the air guide plate 24 is opposite to the rotation direction of the airflow. When the airflow rotates, it contacts and collides with the curved part of the air guide plate 24. Due to the opposite directions, the angle between the airflow and the curved part of the air guide plate 24 is greater than 90 degrees. The airflow contacts the air guide plate 24 at a larger angle, which can reduce the kinetic energy loss of the airflow contacting the air guide plate 24. During the contact process at a larger angle, the air guide plate 24 has an obvious guiding effect on the airflow, with little energy loss, which greatly improves the air outlet efficiency.

[0203] In this embodiment, the number of connecting plates 22 is 7. However, the number of connecting plates 22 is not limited thereto, and in some embodiments, the number of connecting plates 22 can be 2, 3, 4, 5, 6, 8, or more, depending on the specific application scenario.

[0204] In this embodiment, the number of air deflectors 24 is also 7, corresponding to the number of connecting plates 22. However, the number of air deflectors 24 is not limited thereto. Depending on the specific application scenario, in some embodiments, the number of air deflectors 24 can be 2, 3, 4, 5, 6, 8, or more.

[0205] In some embodiments, the connecting plate 22 and the air guide plate 24 adopt a split structure, that is, the connecting plate 22 and the air guide plate 24 are independently provided, and one end of the connection between the connecting plate 22 and the air guide plate 24 can be docked together or separated from each other.

[0206] The air guide plate 24 is disposed between the fan blades 4 and the housing 1 , and the air guide plate 24 is connected to the inner surface of the housing 1 , with a gap between the air guide plate 24 and the fan blades 4 .

[0207] Air deflector 24 is disposed between fan blades 4 and housing 1, with a gap between air deflector 24 and fan blades 4. Due to the gap between air deflector 24 and fan blades 4, after airflow contacts air deflector 24, part of the airflow flows along the guide of air deflector 24 toward the air outlet, while the remaining airflow flows through the gap between air deflector 24 and fan blades 4 to the next air deflector 24. The gap between air deflector 24 and fan blades 4 provides a channel for air pressure balance between air deflectors 24, avoiding the problem of inconsistent air pressure on both sides of air deflector 24 due to the complete closure of air deflector 24, which in turn affects the air output efficiency of the fan module.

[0208] Please refer to FIG3-5, which is a schematic cross-sectional view of the fan module of this embodiment.

[0209] As shown in Figure 3-5, the fan motor 3 includes: a coil 32, a magnetic ring 33 and a rotating shaft 31. A connecting column 23 is provided on the side of the connecting member 2 facing the fan blades 4. The coil 32 is sleeved on the connecting column 23, the magnetic ring 33 is sleeved on the coil 32, and the fan blades 4 are sleeved on the magnetic ring 33. One end of the rotating shaft 31 is connected to the fan blades 4, and the other end of the rotating shaft 31 is inserted into the connecting column 23. The buffer member 5 is provided between the connecting column 23 and the fan blades 4.

[0210] In some embodiments, when the connecting post 23 includes a connecting cone 231 and a connecting cylinder 232, the coil 32 is sleeved on the connecting cylinder 232, with one end of the coil 32 abutting against the connecting cone 231. The connecting cone 231 can define the position of the coil 32, facilitating assembly and positioning of the coil 32.

[0211] The magnetic ring 33 is disposed inside the hub 41 of the fan blade 4, and the magnetic ring 33 and the hub 41 are connected by an interference fit. The inner ring of the magnetic ring 33 is sleeved on the coil 32 and connected to the coil 32 by magnetic coupling. The connection method of the magnetic ring 33, the fan blade 4, and the coil 32 can make the connection between the entire fan motor 3 and the fan blade 4 more compact, and can also save the outer shell structure of the fan motor 3, making the fan motor 3 more lightweight. The fan blade 4 is sleeved on the magnetic ring 33, so that the contact area between the fan blade 4 and the fan motor 3 is larger, and the torque during rotation is smaller. Therefore, the fan blade 4 can be more stable during rotation, the rotation speed is higher, and the air output of the fan module is larger.

[0212] In some embodiments, the fan motor 3 further includes a metal ring 34, which is sleeved on the magnetic ring 33, and the fan blades 4 are sleeved on the metal ring 34. The provision of the metal ring 34 can protect the magnetic ring 33 and prevent the magnetic ring 33 from being damaged during the assembly process.

[0213] The buffer member 5 is mounted on the rotating shaft 31. The connecting post 23 has a connecting hole 25 formed therein. A first sleeve 26 and a second sleeve 27 are disposed at either end of the connecting hole 25. The rotating shaft 31 is inserted into and passes through the first sleeve 26 and the second sleeve 27. The arrangement of the first sleeve 26 and the second sleeve 27 improves the linear stability of the rotating shaft 31 during rotation, thereby making the rotation of the fan blades 4 more stable and improving the air output efficiency.

[0214] The end of the rotating shaft 31 that passes through the second sleeve 27 has a slot, and an annular retaining ring 35 is disposed in the slot. The annular retaining ring 35 has an opening to allow it to be removed. The diameter of the annular retaining ring is larger than the diameter of the inner ring of the second sleeve 27. Therefore, the annular retaining ring prevents the rotating shaft 31 from falling out of the second sleeve 27 and the first sleeve 26.

[0215] In some embodiments, a sealing ring 36 is provided between the annular retaining ring 35 and the second sleeve 27 .

[0216] The buffer member 5 is constructed in a tower shape and is sleeved on the rotating shaft 31. The buffer member 5 is sleeved on the rotating shaft 31 to prevent the buffer member 5 from being displaced when the fan blades 4 rotate, thereby preventing the normal rotation of the fan blades 4.

[0217] The buffer member 5 is constructed in a tower shape. When compressed, the elastic force of the tower-shaped buffer member 5 increases linearly, effectively buffering and resetting the displacement generated during the rotation of the fan blades 4, making the rotation of the fan blades 4 more stable. The linear increase in elastic force can ensure that the buffering force increases steadily when the fan blades 4 are squeezed by a large external force, achieving a better buffering effect.

[0218] In some embodiments, the shape of the buffer 5 is not limited to a tower shape. Depending on the specific application scenario, the shape of the buffer 5 can be (but not limited to): annular, straight, arc-shaped, spherical, etc.

[0219] In some embodiments, the position of the buffer member 5 is not limited to being mounted on the rotating shaft 31 , and can be disposed on the fan blades 4 or on the connecting column 23 depending on the specific application scenario.

[0220] One end of the buffer 5 is fixedly connected to the connecting column 23, and the other end of the buffer 5 is overlapped with or separated from the fan blades 4. The buffer 5 is connected to the connecting column 23, which prevents the buffer 5 from contacting the fan blades 4 when the fan blades 4 are in normal working condition, interfering with the normal rotation of the fan blades 4, and improving the rotation stability of the fan blades 4 and the air outlet efficiency of the fan module. The other end of the buffer 5 is overlapped with or separated from the fan blades 4. Specifically, when the fan blades 4 are forced to move in the direction of the connecting column 23, the fan blades 4 are overlapped with the buffer 5; when the fan blades 4 rotate normally, they are separated from the buffer 5 to ensure that the fan blades 4 are in the best rotation state. In this embodiment, the buffer 5 can be mounted on the rotating shaft 31 and can also be separated from the rotating shaft 31.

[0221] In this embodiment, the material of the buffer member 5 can be (but is not limited to): a metal spring or a rubber elastomer.

[0222] In this embodiment, a connector 2 for connecting to a fan motor 3 is provided within the housing 1 of the fan module. Fan blades 4 are connected to the fan motor 3, and a buffer 5 is provided between the fan blades 4 and the connector 2. The buffer 5 can limit and buffer the displacement of the fan blades 4, preventing the fan blades 4 from contacting other components within the housing 1 in a narrow space, which could lead to wear of the fan blades 42 or reduced rotation efficiency. This improves the rotation efficiency of the fan module and extends the service life of the fan module.

[0223] In this embodiment, the ratio range of the inner diameter of the housing 1 to the maximum diameter of the fan blades 4 is 1.01-1.15. The ratio range of the inner diameter of the housing 1 to the maximum diameter of the fan blades 4 defines the gap between the housing 1 and the maximum diameter of the fan blades 4. When the fan blades 4 rotate, they generate centrifugal force on the airflow passing through the fan blades 4. Under the action of the centrifugal force, the airflow moves laterally and collides with the inner wall of the housing 1, generating turbulence, thereby affecting the airflow field in the housing 1, resulting in a low air outlet efficiency of the fan module. Limiting the ratio range of the inner diameter of the housing 1 to the maximum diameter of the fan blades 4 to between 1.01-1.15 reduces the gap between the fan blades 4 and the housing 1, reduces the travel of the lateral airflow under the action of centrifugal force, and limits the speed of the airflow when it contacts the inner edge of the housing 1 to a smaller preferred range. Therefore, this ratio can reduce the energy loss when the airflow collides with the housing 1, reduce the probability of turbulence, and improve the stability of the airflow field. At the same time, since the ratio range of the inner diameter of the shell 1 to the maximum diameter of the fan blades 4 is limited to between 1.01-1.15, within this ratio range, the distance between the fan blades 4 and the shell 1 is small, which can have an excellent interception effect on the return airflow in the fan blades 4, preventing the cyclone generated by the return airflow from affecting the air intake of the fan blades 4, thereby improving the air intake efficiency of the fan module. The improvement of the air intake efficiency enables the overall air outlet efficiency of the fan module to be improved.

[0224] It should be noted that any implementation in this embodiment can be implemented independently or in combination with one or more other implementations. When implemented in combination, the combination should not be limited to the combination listed in this embodiment.

[0225] Example 2

[0226] A blowing device includes the fan module in Example 1, and the fan module serves as a core module component for assembling the blowing device.

[0227] It should be noted that the blowing device in this embodiment includes (but is not limited to): bladeless fans, desktop fans, floor fans, spherical fans, neck fans, handheld fans, industrial fans, air conditioners, hair dryers, and other products that require air circulation. The fan module in Example 1 is assembled inside the housing of the above products.

[0228] The fan module of the air blowing device in this embodiment has a connector 2 for connecting to a fan motor 3 within its housing 1. Fan blades 4 are connected to the fan motor 3, and a buffer 5 is provided between the fan blades 4 and the connector 2. The buffer 5 limits and buffers the displacement of the fan blades 4, preventing contact between the fan blades 4 and other components within the housing 1 in a confined space, which could lead to wear of the fan blades 42 or reduced rotational efficiency. This improves the rotational efficiency of the fan module and extends its service life.

[0229] Option 4 is shown in Figures 4-1 to 4-6.

[0230] Example 1

[0231] Please refer to Figures 4-1 and 4-2. Figure 4-1 is a schematic diagram of the overall structure of the fan module of this embodiment; Figure 4-2 is a schematic diagram of the exploded structure of the fan module of this embodiment.

[0232] As shown in Figures 4-1 and 4-2, a fan module includes a housing 1, a fan motor 3, and fan blades 4. The fan motor 3 is disposed within the housing 1; the fan blades 4 are internally defined with a first cavity 431 and a second cavity 432, which are interconnected. The first cavity 431 is sleeved onto the fan motor 3, and a connecting sleeve 434 is disposed within the second cavity 432. The rotating shaft 31 of the fan motor 3 passes through the first cavity 431 and is connected to the connecting sleeve 434.

[0233] In the above embodiment, the fan motor 3 and the fan blades 4 are disposed within the housing 1. A cavity is defined within the fan blades 4, namely a first cavity 431 and a second cavity 432. The first cavity 431 and the second cavity 432 are interconnected, wherein the first cavity 431 is sleeved on the fan motor 3, and a connecting sleeve 434 is provided in the second cavity 432, which is connected to the rotating shaft 31. Since the first cavity 431 of the fan blades 4 is sleeved on the fan motor 3, the fan motor 3 and the fan blades 4 can be constructed into a conjoined structure, thereby reducing the overall volume of the fan motor 3 and the fan blades 4, and further reducing the overall volume of the fan module. At the same time, since the first cavity 431 is mounted on the fan motor 3 and the rotating shaft 31 is arranged inside the fan blades 4, the weight of the fan blades 4 is not concentrated on one end of the rotating shaft 31, which will not cause the center of mass of the rotating shaft 31 to shift, thereby reducing the probability of vibration of the rotating shaft 31 under high-speed rotation, thereby reducing the probability of abnormal shaking of the fan blades 4, improving the rotation stability of the fan blades 4, and improving the air outlet efficiency of the fan module.

[0234] In this embodiment, the housing 1 is cylindrical, and a cylindrical air cavity 11 is defined within the cylinder. However, the shape of the housing 1 is not limited thereto. Depending on the specific application scenario, in some embodiments, the shape of the housing 1 can be a triangle, a quadrilateral, a pentagon, other polygons, or other regular shapes.

[0235] Please refer to Figure 4-3, which is a schematic diagram of the overall structure of the shell of this embodiment.

[0236] As shown in FIG4-3 , in this embodiment, the housing 1 is provided with an air cavity 11 extending through its upper and lower surfaces. The air cavity 11 is cylindrical. However, the shape of the air cavity 11 is not limited thereto. Depending on the specific application scenario, in some embodiments, the air cavity 11 can be shaped like a star, a heart, a racetrack, or a polygon.

[0237] The fan motor 3 in this embodiment includes: a coil 32, a magnetic ring 33 and a rotating shaft 31. A connecting column 23 is provided on the side of the connecting member 2 facing the fan blades 4. The coil 32 is sleeved on the connecting column 23, the magnetic ring 33 is sleeved on the coil 32, and the fan blades 4 are sleeved on the magnetic ring 33. One end of the rotating shaft 31 is connected to the connecting shaft sleeve 434 of the fan blades 4, and the other end of the rotating shaft 31 is inserted into the connecting column 23. The buffer member 5 is arranged between the connecting column 23 and the fan blades 4.

[0238] The buffer member 5 is constructed in a tower shape and is sleeved on the rotating shaft 31. The buffer member 5 is sleeved on the rotating shaft 31 to prevent the buffer member 5 from being displaced when the fan blades 4 rotate, thereby preventing the normal rotation of the fan blades 4.

[0239] The buffer member 5 is constructed in a tower shape. When compressed, the elastic force of the buffer member 5 increases linearly, effectively buffering and resetting the displacement generated during the rotation of the fan blades 4, making the rotation of the fan blades 4 more stable. The linear increase in elastic force can ensure that the buffering force increases steadily when the fan blades 4 are squeezed by a large external force, achieving a better buffering effect.

[0240] In some embodiments, the shape of the buffer 5 is not limited to a tower shape. Depending on the specific application scenario, the shape of the buffer 5 can be (but not limited to): annular, straight, arc-shaped, spherical, etc.

[0241] In some embodiments, the fan motor 3 further includes a metal ring 34, which is sleeved on the magnetic ring 33, and the fan blades 4 are sleeved on the metal ring 34. The provision of the metal ring 34 can protect the magnetic ring 33 and prevent the magnetic ring 33 from being damaged during the assembly process.

[0242] In some embodiments, the fan motor 3 can be a motor with a housing 1. The connector 2 is used to fix the motor in the housing 1.

[0243] The connector 2 includes a connecting ring 21, connecting posts 23, and a plurality of connecting plates 22. The connecting plates 22 are arranged around the connecting ring 21, with one end of each connecting plate 22 connected to the inner surface of the housing 1 and the other end of each connecting plate 22 connected to the connecting ring 21.

[0244] The connecting column 23 is arranged on the side of the connecting ring 21 facing the fan blades 4. The connecting column 23 includes: a connecting cone 231 and a connecting cylinder 232. The bottom surface 412 of the connecting cone 231 is arranged on the connecting ring 21, and the top surface 411 of the connecting cone 231 is connected to the connecting cylinder 232. The coil 32 is sleeved on the connecting cylinder 232.

[0245] The structure of the connecting column 23 enables the connecting cone 231 to play a limiting role, and acts as a stop for the fan assembly mounted on the connecting cylinder 232, thereby improving the assembly efficiency of the coil 32.

[0246] In some embodiments, the connecting pillar 23 can also be configured as a prism or a circular pillar.

[0247] The arrangement of the connecting column 23 enables the fan motor 3 and the fan blades 4 to be suspended inside the housing 1 , so that the fan motor 3 and the fan blades 4 can rotate more smoothly inside the housing 1 .

[0248] Please refer to FIG4-4 , which is a schematic structural diagram of the fan blade of this embodiment from a first perspective.

[0249] As shown in FIG4-4 , the fan blade 4 includes: a hub 41 and a plurality of blades 42 . The plurality of blades 42 are arranged around the hub 41 , and a first cavity 431 and a second cavity 432 are arranged in the hub 41 .

[0250] Please refer to Figures 4-5 and 4-6. Figure 4-5 is a structural diagram of the fan blade of this embodiment from a second perspective; Figure 4-6 is a structural diagram of the fan blade of this embodiment from a third perspective.

[0251] As shown in Figures 4-5 and 4-6, the hub 41 includes a top surface 411, a bottom surface 412, and side edges 413. The cross-sectional area of ​​the bottom surface 412 is larger than the cross-sectional area of ​​the top surface 411, and there is a smooth transition between the top surface 411 and the side edges 413. That is, in this embodiment, the hub 41 is constructed in the shape of a bullet with a flat head. This shape of the hub 41 enables the airflow flowing through the blades 42 to flow along the arc surface formed by the smooth transition between the top surface 411 and the side edges 413, which has a good guiding effect on the airflow, improves the efficiency of the airflow flowing in the fan blades 4, and thus improves the air output efficiency of the fan module.

[0252] However, the shape of the hub 41 is not limited thereto. Depending on the specific application scenario, in some embodiments, the shape of the hub 41 can be (but not limited to): hemispherical, conical, truncated cone, cylindrical, etc.

[0253] The top surface 411 of the hub 41 is a circular surface. However, the shape of the top surface 411 is not limited thereto. In some embodiments, depending on the specific application scenario,

[0254] In this embodiment, the number of blades 42 is 9. However, the number of blades 42 is not limited thereto. Depending on the specific application scenario, in some embodiments, the number of blades 42 can be (but not limited to): 2, 3, 4, 5, 6, 7, 8, 10, 11, or more.

[0255] The inner surface of the fan blade 4 is raised to form a limiting ring 433 . The limiting ring 433 is located between the first cavity 431 and the second cavity 432 , and is in contact with the fan motor 3 .

[0256] In this embodiment, a limiting ring 433 is provided on the inner surface of the hub 41 , and the limiting ring 433 divides the internal cavity 43 of the hub 41 into a first cavity 431 and a second cavity 432 , and the first cavity 431 and the second cavity 432 are interconnected through the limiting ring 433 .

[0257] The limiting ring 433 abuts against the magnetic ring 33 of the fan motor 3. In some embodiments, when the magnetic ring 33 of the fan motor 3 is sleeved with a metal ring 34, the limiting ring 433 abuts against one end of the metal ring 34. The abutment between the limiting ring 433 and the magnetic ring 33 or the metal ring 34 allows the limiting ring 433 to limit the magnetic ring 33 or the metal ring 34, facilitating assembly of the magnetic ring 33 or the metal ring 34 and preventing the magnetic ring 33 or the metal ring 34 from excessively extending into the internal cavity 43 of the hub 41, which could cause the bottom surface 412 of the hub 41 to contact the connector 2.

[0258] A plurality of reinforcing ribs 435 are provided in the second cavity 432 , and the plurality of reinforcing ribs 435 are arranged around the connecting sleeve 434 , and one end of each of the plurality of reinforcing ribs 435 is connected to the connecting sleeve 434 , and the other end of each reinforcing rib 435 is connected to the inner surface of the second cavity 432 .

[0259] The provision of the reinforcing ribs 435 can enhance the physical strength of the connecting sleeve 434. At the same time, the provision of the reinforcing ribs 435 can disperse the force exerted on the fan blades 4 to the hub 41, thereby preventing the connecting sleeve 434 from being subjected to a single point of force and improving the rotational stability of the fan blades 4.

[0260] Each of the multiple blades 42 includes a first end 421 and a second end 422 opposite to the first end 421, and the length of the first end 421 is greater than the length of the second end 422. The first end 421 is located adjacent to the top surface 411 of the hub 41, and the second end 422 is located adjacent to the bottom surface 412 of the hub 41. In each blade 42, the first end 421 is used to push the airflow into the fan blade 4 when the fan blade 4 rotates. The longer length of the first end 421 is conducive to pushing the airflow. The second end 422 is located at the end of the airflow direction. The reduction in the length of the second end 422 is conducive to reducing the size of the space for airflow flow, compressing the airflow, and increasing the initial kinetic energy of the airflow, thereby improving the air outlet efficiency of the fan module.

[0261] Each blade 42 has a blade edge 423. The thickness of each blade 42 gradually increases from the first end 421 to the blade edge 423 and gradually decreases from the blade edge 423 to the second end 422. The varying thicknesses of the blades 42 at different locations result in each blade 42 being thinner at both ends and thicker in the middle. This structure enhances the airflow-cutting capabilities of the blades 42 at both ends and reduces air resistance at both ends. The increased thickness in the middle enhances the physical strength of the blades 42. Furthermore, the increased thickness of the blades 42 reduces the space between adjacent blades 42, thereby boosting the pressure of the airflow.

[0262] In this embodiment, the ratio range of the inner diameter of the housing 1 to the maximum diameter of the fan blades 4 is 1.01-1.15. The ratio range of the inner diameter of the housing 1 to the maximum diameter of the fan blades 4 defines the gap between the housing 1 and the maximum diameter of the fan blades 4. When the fan blades 4 rotate, they generate centrifugal force on the airflow passing through the fan blades 4. Under the action of the centrifugal force, the airflow moves laterally and collides with the inner wall of the housing 1, generating turbulence, thereby affecting the airflow field in the housing 1, resulting in a low air outlet efficiency of the fan module. Limiting the ratio range of the inner diameter of the housing 1 to the maximum diameter of the fan blades 4 to between 1.01-1.15 reduces the gap between the fan blades 4 and the housing 1, reduces the travel of the lateral airflow under the action of centrifugal force, and limits the speed of the airflow when it contacts the inner edge of the housing 1 to a smaller preferred range. Therefore, this ratio can reduce the energy loss when the airflow collides with the housing 1, reduce the probability of turbulence, and improve the stability of the airflow field. At the same time, since the ratio range of the inner diameter of the shell 1 to the maximum diameter of the fan blades 4 is limited to between 1.01-1.15, within this ratio range, the distance between the fan blades 4 and the shell 1 is small, which can have an excellent interception effect on the return airflow in the fan blades 4, preventing the cyclone generated by the return airflow from affecting the air intake of the fan blades 4, thereby improving the air intake efficiency of the fan module. The improvement of the air intake efficiency enables the overall air outlet efficiency of the fan module to be improved.

[0263] In some embodiments, the length ratio of the first end 421 to the second end 422 is in the range of 1.4-1.9. The airflow flowing through the fan flows from the first end 421 to the second end 422, and the direction of the first end 421 facing the second end 422 gradually decreases. This reduction process cooperates with the size change of the hub 31 to gradually reduce the space for the airflow to flow, gradually pressurize the convection, and increase the initial velocity of the airflow. However, due to the gap between the fan blades 4 and the housing 1, when the pressure of the airflow entering the first end 421 and flowing out of the second end 422 is obviously too high, since it is not a completely enclosed space, the airflow will flow back due to the excessive pressure. The backflow airflow will impact the intake airflow of the fan module to form a cyclone, reducing the air intake efficiency of the fan module. The length ratio of the first end 421 to the second end 422 is limited to 1.4-1.9. Within this ratio range, the airflow pressure flowing through the fan blades 4 is adjusted within the optimal range, minimizing the backflow problem caused by excessive air pressure. At the same time, within this ratio range, the first end 421 can most effectively intercept and utilize the return airflow that gradually overflows from the edge of the blade 42, minimizing the probability of the return airflow flowing out of the housing 1. The combination of these two functions allows the airflow entering the first end 421 and the airflow outflowing the end to approach the optimal value of 1:1, greatly improving the air output efficiency of the fan blade 4.

[0264] It should be noted that any implementation in this embodiment can be implemented independently or in combination with one or more other implementations. When implemented in combination, the combination should not be limited to the combination listed in this embodiment.

[0265] Example 2

[0266] A blowing device includes the fan module in Example 1, and the fan module serves as a core module component for assembling the blowing device.

[0267] It should be noted that the blowing device in this embodiment includes (but is not limited to): bladeless fans, desktop fans, floor fans, spherical fans, neck fans, handheld fans, industrial fans, air conditioners, hair dryers, and other products that require air circulation. The fan module in Example 1 is assembled inside the housing of the above products.

[0268] The fan module of the blowing device in this embodiment disposes the fan motor 3 and the fan blades 4 within the housing 1. The fan blades 4 are provided with cavities therein, namely a first cavity 431 and a second cavity 432. The first cavity 431 and the second cavity 432 are interconnected, wherein the first cavity 431 is sleeved on the fan motor 3, and a connecting sleeve 434 is provided in the second cavity 432, which is connected to the rotating shaft 31. Since the first cavity 431 of the fan blades 4 is sleeved on the fan motor 3, the fan motor 3 and the fan blades 4 can be constructed into a conjoined structure, thereby reducing the overall volume of the fan motor 3 and the fan blades 4, and further reducing the overall volume of the fan module. At the same time, since the first cavity 431 is mounted on the fan motor 3 and the rotating shaft 31 is arranged inside the fan blades 4, the weight of the fan blades 4 is not concentrated on one end of the rotating shaft 31, which will not cause the center of mass of the rotating shaft 31 to shift, thereby reducing the probability of vibration of the rotating shaft 31 under high-speed rotation, thereby reducing the probability of abnormal shaking of the fan blades 4, improving the rotation stability of the fan blades 4, and improving the air outlet efficiency of the fan module.

[0269] Option 5 is shown in Figures 5-1 to 5-6.

[0270] Example 1

[0271] Please refer to Figures 5-1 and 5-2. Figure 5-1 is a schematic diagram of the overall structure of the fan module of this embodiment; Figure 5-2 is a schematic diagram of the exploded structure of the fan module of this embodiment.

[0272] As shown in Figures 5-1 and 5-2, a fan module includes: a housing 1, a connector 2, a fan motor 3, and fan blades 4. The connector 2 is disposed within the housing 1, and the connector 2 and the housing 1 enclose multiple airflow channels, with one end of the connection abutting against or spaced apart by a first bearing 35. The fan motor 3 is sleeved on the connector 2 and the first bearing 35, with one end of the bearing of the fan motor 3 passing through the first bearing 35 and connected to the connector 2. The fan blades 4 are connected to the other end of the rotating shaft 31.

[0273] In the above embodiment, a connector 2 is provided in the housing 1, and a first bearing 35 is provided at the end of the connector 2 in contact with or at intervals, and the fan motor 3 is sleeved on the connector 2 and the first bearing 35. Since the first bearing 35 is made of metal, it has higher physical strength and can provide stronger support for the fan motor 3. At the same time, the support strength of the first bearing 35 is higher, which avoids the problem of the connector 2 being damaged and broken due to excessive force when the fan motor 3 rotates at high speed, thereby improving the service life of the fan module. At the same time, the provision of the first bearing 35 shortens the length of the connector 2. The shortened length shortens the torque of the connector 2 when it is subjected to force, and it bears a greater force from the fan motor 3, making the rotation of the fan motor 3 more stable and the air outlet efficiency higher.

[0274] In this embodiment, the housing 1 is cylindrical, and a cylindrical air cavity 11 is defined within the cylinder. However, the shape of the housing 1 is not limited thereto. Depending on the specific application scenario, in some embodiments, the shape of the housing 1 can be a triangle, a quadrilateral, a pentagon, other polygons, or other regular shapes.

[0275] In this embodiment, the housing 1 is provided with an air cavity 11 extending through its upper and lower surfaces. The air cavity 11 is cylindrical. However, the shape of the air cavity 11 is not limited thereto. Depending on the specific application scenario, in some embodiments, the air cavity 11 can be shaped like a star, a heart, a racetrack, or a polygon.

[0276] In some embodiments, a trumpet-shaped air guide cover or an air guide cover with a necked opening is provided in the housing 1 .

[0277] In some embodiments, the fan motor 3 includes: a coil 32 and a magnetic ring 33, the magnetic ring 33 is sleeved on the connecting member 2 and the first bearing 35, the fan motor 3 is sleeved on the magnetic ring 33, and the magnetic ring 33 is sleeved on the coil 32. In this embodiment, a accommodating cavity is provided on the fan blades 4, and the inner surface of the accommodating cavity is sleeved on the coil 32. When the fan motor 3 rotates, the coil 32 drives the magnetic ring 33 to rotate, and the magnetic ring 33 then drives the fan blades 4 to rotate. In this process, the rotating shaft 31 no longer provides driving force for the fan blades 4 like a traditional motor, but plays a role in stabilizing and fixing the fan blades 4. This rotation method, since the steering force area of ​​the magnetic ring 33 acting on the fan blades 4 is larger and the inertia moment of the fan blades 4 is smaller, can enable the fan blades 4 to rotate at high speed and stably.

[0278] Please refer to FIG5-3, which is a cross-sectional diagram of the fan module of this embodiment.

[0279] As shown in FIG5-3, in some embodiments, the fan motor 3 includes a coil 32, a magnetic ring 33, and a motor housing 34. The coil 32 is mounted on the connector 2 and the first bearing 35, the magnetic ring 33 is mounted on the coil 32, and the motor housing 34 is mounted on the magnetic ring 33. The motor housing 34 is fixedly connected to the rotating shaft 31 so that the fan housing 1 drives the rotating shaft 31 to rotate. In this embodiment, the coil 32 drives the magnetic ring 33 to rotate, and the rotation of the magnetic ring 33 drives the motor housing 34 to rotate synchronously. The motor housing 34 then drives the rotating shaft 31 connected to it to rotate. This connection and driving method, because the steering force applied to the magnetic ring 33 is larger, the magnetic coupling connection between the magnetic ring 33 and the coil 32 can achieve faster and more stable rotation of the magnetic ring 33, thereby achieving faster and more stable rotation of the fan motor 3. At the same time, due to the connection between the motor housing 34 and the rotating shaft 31, the rotational torque between the rotating shaft 31 and the fan blades 4 is smaller, and the rotational inertia resistance of the fan blades 4 is also smaller. When rotating at high speed, the fan blades 4 are less likely to shake and resonate, making the rotation of the fan blades 4 more stable and the speed higher.

[0280] The coil 32 is interference-fitted with the connector 2, the magnetic ring 33 is magnetically coupled to the coil 32, and the motor housing 34 is interference-fitted with the rotating shaft 31. During the rotation of the magnetic ring 33 and coil 32, the magnetic ring 33 rotates in a suspended state, which reduces the physical friction experienced by conventional motors, thereby further increasing the speed of the fan motor 3.

[0281] In some embodiments, the connection method between the coil 32 and the connector 2 is not limited to interference fit. Depending on the specific application scenario, the connection method between the coil 32 and the connector 2 can also be (but not limited to): gluing, welding, riveting, screw connection and other fixing methods.

[0282] In some embodiments, the connection between the motor housing 34 and the rotating shaft 31 is not limited to interference fit. Depending on the specific application scenario, the connection between the motor housing 34 and the rotating shaft 31 can also be (but not limited to): gluing, welding, riveting, screw connection, etc.

[0283] The connecting member 2 includes: a connecting ring 22 and a plurality of connecting plates 21. The plurality of connecting plates 21 are arranged around the connecting ring 22. One end of each of the plurality of connecting plates 21 is connected to the inner surface of the shell 1, and the other end of each connecting plate 21 is connected to the connecting ring 22. Two adjacent connecting plates 21 in the plurality of connecting plates 21 are enclosed to form an air duct.

[0284] The arrangement of multiple connecting plates 21 enables the connecting ring 22 to be suspended in the housing 1 . Every two connecting plates 21 among the multiple connecting plates 21 enclose an air duct, allowing the airflow pushed by the fan assembly to flow through the air duct.

[0285] In this embodiment, the number of connecting plates 21 is 7. However, the number of connecting plates 21 is not limited thereto, and in some embodiments, the number of connecting plates 21 can be 2, 3, 4, 5, 6, 8, or more, depending on the specific application scenario.

[0286] In some embodiments, the connecting member 2 is a plate disposed inside the housing 1 . The shape of the plate is the same as the shape of the internal cavity of the housing 1 , and a plurality of holes for airflow are provided on the plate.

[0287] The connector 2 and the housing 1 are manufactured by an integral molding process. However, the manufacturing process of the connector 2 and the housing 1 is not limited thereto. Depending on the specific application scenario, in some embodiments, the connector 2 and the housing 1 can be separately machined and molded, and then assembled and connected by gluing, snapping, riveting, or screwing.

[0288] Please refer to Figures 5-4 and 5-5. Figure 5-4 is a schematic diagram of the three-dimensional structure of the shell of this embodiment; Figure 5-5 is a schematic diagram of the structure of the connection between the shell and the rotating shaft of this embodiment.

[0289] As shown in Figures 5-4 and 5-5, the connector 2 further includes a connecting post 23. The connecting post 23 is connected to the side of the connecting ring 22 facing the fan motor 3. The connecting post 23 abuts against or is spaced apart from the first bearing 35. The bearing passes through the first bearing 35 and is connected to the connecting post 23. The fan motor 3 is sleeved on the connecting post 23 and the first bearing 35.

[0290] The connecting post 23 is configured in a truncated cone shape, which can stop the coil 32 and facilitate the installation and fixation of the coil 32. However, the shape of the connecting post 23 is not limited to this. Depending on the specific application scenario, in some embodiments, the connecting post 23 can be a stepped structure composed of two connected cylinders, or a prism or cylindrical structure.

[0291] In some embodiments, the connector 2 only includes: a connecting column 23 and multiple connecting plates 21, the multiple connecting plates 21 are arranged around the connecting column 23, and one end of the multiple connecting plates 21 is connected to the inner surface of the shell 1 and the other end is connected to the connecting column 23.

[0292] The connecting post 23 and the connecting ring 22 are manufactured by an integral casting process. However, the manufacturing method of the connecting post 23 and the connecting ring 22 is not limited to this. In some embodiments, the connecting post 23 and the connecting ring 22 are manufactured separately and then connected by (but not limited to) screw connection, clamping, riveting, adhesive connection, etc.

[0293] In some embodiments, the end of each connecting plate 21 facing the fan motor 3 is bent and extended toward the fan motor 3 to form an air guide plate 24, and the bending direction of the air guide plate 24 is opposite to the rotation direction of the fan assembly.

[0294] Specifically, each of the plurality of connecting plates 21 is formed with an air guide plate 24 at the end facing the fan motor 3. The curvature of the air guide plate 24 is opposite to the rotational direction of the fan blades 4. In this embodiment, the curvature of the air guide plate 24 is opposite to the rotational direction of the fan blades 4, which means that the curvature of the air guide plate 24 is opposite to the rotational direction of the fan blades 4. This is not limited to the specific embodiment in which the curvature of the air guide plate 24 is 180 degrees to the rotational direction of the fan blades 4. In some embodiments, the curvature of the air guide plate 24 at an obtuse angle to the rotational direction of the fan blades 4 is also within the scope of the definition of "opposite" in this embodiment.

[0295] The bending direction of the air guide plate 24 is opposite to the rotation direction of the fan blades 4. When the fan blades 4 rotate, they will drive the airflow to rotate in the same direction. At this time, the bending direction of the air guide plate 24 is opposite to the rotation direction of the airflow. When the airflow rotates, it contacts and collides with the curved part of the air guide plate 24. Due to the opposite directions, the angle between the airflow and the curved part of the air guide plate 24 is greater than 90 degrees. The airflow contacts the air guide plate 24 at a larger angle, which can reduce the kinetic energy loss of the airflow contacting the air guide plate 24. During the contact process at a larger angle, the air guide plate 24 has an obvious guiding effect on the airflow, with small energy loss, which greatly improves the air outlet efficiency.

[0296] The air guide plate 24 is disposed between the fan assembly and the housing 1 , and is connected to the inner surface of the housing 1 , with a gap being provided between the air guide plate 24 and the fan assembly.

[0297] Specifically, the air guide plate 24 is disposed between the fan motor 3 and the housing 1 , and a gap is provided between the air guide plate 24 and the fan motor 3 .

[0298] In some embodiments, the air guide plate 24 is disposed between the hub of the fan blade 4 and the housing 1 , and a gap is provided between the air guide plate 24 and the hub.

[0299] Air deflector 24 is disposed between fan blades 4 and housing 1, with a gap between air deflector 24 and fan blades 4. Due to the gap between air deflector 24 and fan blades 4, after airflow contacts air deflector 24, part of the airflow flows along the guide of air deflector 24 toward the air outlet, while the remaining airflow flows through the gap between air deflector 24 and fan blades 4 to the next air deflector 24. The gap between air deflector 24 and fan blades 4 provides a channel for air pressure balance between air deflectors 24, avoiding the problem of inconsistent air pressure on both sides of air deflector 24 due to the complete closure of air deflector 24, which in turn affects the air output efficiency of the fan module.

[0300] In some embodiments, the connecting ring 22 includes: a connecting outer ring 221 and a connecting inner ring 222, the connecting inner ring 222 is arranged inside the connecting outer ring 221, the connecting outer ring 221 is connected to multiple connecting plates 21, one end of the connecting column 23 is connected to the connecting inner ring 222, and the other end of the connecting column 23 extends out of the connecting outer ring 221 and is sleeved and connected to the fan motor 3.

[0301] The thickness of the connecting outer ring 221 is greater than the thickness of the connecting inner ring 222, so that when the connecting inner ring 222 is set in the connecting outer ring 221, there is still empty space in the connecting outer ring 221. The empty space can be used to set the assembly base, thereby improving the space utilization of the fan module.

[0302] The connecting post 23 has a connecting hole 25 extending through it. The connecting hole 25 communicates with the connecting inner ring 222. A second bearing 36 is disposed within the connecting inner ring 222 and the connecting hole 25. The rotating shaft 31 passes through the connecting hole 25 and is connected to the second bearing 36. The rotating shaft 31 is inserted into and out of the first bearing 35 and the second bearing 36. A retaining groove 311 is defined at the end of the rotating shaft 31 that extends beyond the second bearing 36. A retaining spring 37 is connected to the retaining groove 311.

[0303] The arrangement of the first bearing 35 and the second bearing 36 allows for smoother rotation of the rotating shaft 31. Furthermore, the arrangement of two rotating shafts 31 stabilizes the linear rotation of the rotating shaft 31, enabling faster rotation of the fan motor 3. The arrangement of the retaining groove 311 and the retaining spring 37 prevents the rotating shaft 31 from falling out of the first bearing 35 and the second bearing 36, thereby enhancing the stability and reliability of the connection of the rotating shaft 31.

[0304] The end of the connecting outer ring 221 facing away from the fan motor 3 is snap-connected with a PCB circuit board 6. Snap-connecting the PCB circuit board 6 to the connecting outer ring 221 and arranging the PCB circuit board 6 on the connecting outer ring 221 can prevent the PCB circuit board 6 from leaking out of the fan module and obstructing the airflow within the fan module. Therefore, the arrangement of the PCB circuit board 6 reduces the wind resistance inside the fan module and improves the air outlet efficiency of the fan module. The snap-connection between the PCB circuit board 6 and the connecting outer ring 221 facilitates the disassembly and replacement of the PCB circuit board 6, thereby improving maintenance efficiency. At the same time, the PCB circuit board 6 can also serve as a dust cover above the fan motor 3 or the rotating shaft 31 and the second bearing 36 to prevent external dust from entering the above-mentioned components and affecting the normal use of the above-mentioned components.

[0305] Please refer to Figures 5-6, which are schematic diagrams of the connection structure between the housing and the PCB circuit board in this embodiment.

[0306] As shown in Figure 5-6, a clamping plate 221a and a support plate 221b are provided at one end of the connecting outer ring 221 facing away from the fan motor 3. The support plate 221b overlaps with the PCB circuit board 6, and the clamping plate 221a is clamped and connected with the PCB circuit board 6. The support plate 221b and the clamping plate 221a are alternately arranged.

[0307] The support plates 221 b and the clamping plates 221 a are alternately arranged so that the support plates 221 b and the clamping plates 221 a have movable space, which facilitates the assembly of the PCB circuit board 6 .

[0308] In this embodiment, the number of support plates 221b is 3. However, the number of support plates 221b is not limited thereto, and depending on the specific application scenario, in some embodiments, the number of support plates 221b can be (but not limited to): 2, 4, 5 or more.

[0309] In this embodiment, the number of the clamping plates 221a is 3. However, the number of the clamping plates 221a is not limited thereto, and depending on the specific application scenario, in some embodiments, the number of the clamping plates 221a can be (but not limited to): 2, 4, 5 or more.

[0310] In some embodiments, a claw 221c is provided on the clamping plate 221a, and the support plate 221b forms a support edge 221d by changing the thickness. The position height of the support edge 221d is lower than the position height of the claw 221c. The claw 221c and the support edge 221d form a clamping space, and the PCB circuit board 6 is arranged in the clamping space.

[0311] The annular clamping space constructed by the claws 221c and the support stop 221d can clamp the PCB circuit board 6, preventing the PCB circuit board 6 from shaking or vibrating when the fan motor 3 rotates, thereby improving the stability of the fan module and reducing the noise of the fan module.

[0312] In some embodiments, the clamping device on the clamping plate 221a is not limited to the claw 221c. Depending on the specific application scenario, the clamping plate 221a can be provided with (but not limited to): circular, elliptical, and runway-shaped protrusions serving as the clamping device.

[0313] In some embodiments, the manufacturing device on the support plate 221b is not limited to the support edge 221d formed by thickness change. Depending on the specific application scenario, the support plate 221b can be provided with (not limited to): circular, elliptical, and runway-shaped protrusions acting as support devices.

[0314] In this embodiment, the ratio range of the inner diameter of the housing 1 to the maximum diameter of the fan blades 4 is 1.01-1.15. The ratio range of the inner diameter of the housing 1 to the maximum diameter of the fan blades 4 defines the gap between the housing 1 and the maximum diameter of the fan blades 4. When the fan blades 4 rotate, they generate centrifugal force on the airflow passing through the fan blades 4. Under the action of the centrifugal force, the airflow moves laterally and collides with the inner wall of the housing 1, generating turbulence, thereby affecting the airflow field in the housing 1, resulting in a low air outlet efficiency of the fan module. Limiting the ratio range of the inner diameter of the housing 1 to the maximum diameter of the fan blades 4 to between 1.01-1.15 reduces the gap between the fan blades 4 and the housing 1, reduces the travel of the lateral airflow under the action of centrifugal force, and limits the speed of the airflow when it contacts the inner edge of the housing 1 to a smaller preferred range. Therefore, this ratio can reduce the energy loss when the airflow collides with the housing 1, reduce the probability of turbulence, and improve the stability of the airflow field. At the same time, since the ratio range of the inner diameter of the shell 1 to the maximum diameter of the fan blades 4 is limited to between 1.01-1.15, within this ratio range, the distance between the fan blades 4 and the shell 1 is small, which can have an excellent interception effect on the return airflow in the fan blades 4, preventing the cyclone generated by the return airflow from affecting the air intake of the fan blades 4, thereby improving the air intake efficiency of the fan module. The improvement of the air intake efficiency enables the overall air outlet efficiency of the fan module to be improved.

[0315] In some embodiments, a flexible sleeve 5 is provided over the housing 1, with annular protrusions 51 and dot-shaped protrusions 52 alternatingly arranged on its exterior. The provision of the flexible sleeve 5 can increase the friction between the fan module and external objects or other mating structures, thereby enhancing the connection stability of the fan module. Furthermore, the provision of the flexible sleeve 5 can effectively buffer the physical vibrations generated by the fan module during operation, making the fan module's rotation more stable and generating less noise.

[0316] The flexible sleeve 5 is provided with alternating annular protrusions 51 and dot-shaped protrusions 52 on its exterior. Specifically, in some embodiments, the annular protrusions 51 are provided at both ends of the flexible sleeve 5, while the dot-shaped protrusions 52 are provided between the two annular protrusions 51. Alternatively, the annular protrusions 51 are provided at both ends and in the middle of the flexible sleeve 5, while the dot-shaped protrusions 52 are provided between two adjacent annular protrusions 51. However, the alternating arrangement of the annular protrusions 51 and dot-shaped protrusions 52 is not limited to this. The number of annular protrusions 51 can be 4, 5, 6, or more. The dot-shaped protrusions 52 can also be provided at one or both ends of the flexible sleeve 5.

[0317] The alternating arrangement of the annular protrusions 51 and the dot-shaped protrusions 52 provides the annular protrusions 51 and the dot-shaped protrusions 52 with a larger deformation space, facilitating the assembly of the fan module. At the same time, the larger deformation space can improve the buffering performance of the flexible sleeve 5.

[0318] It should be noted that any implementation in this embodiment can be implemented independently or in combination with one or more other implementations. When implemented in combination, the combination should not be limited to the combination listed in this embodiment.

[0319] Example 2

[0320] A blowing device includes the fan module in Example 1, and the fan module serves as a core module component for assembling the blowing device.

[0321] It should be noted that the blowing device in this embodiment includes (but is not limited to): bladeless fans, car fans, desktop fans, floor fans, spherical fans, neck fans, handheld fans, industrial fans, air conditioners, hair dryers, and other products that require air circulation. The fan module in Example 1 is assembled inside the housing of the above products.

[0322] In the present embodiment, a connecting member 2 is provided in the housing 1 of the blowing device, and a first bearing 35 is provided at the end of the connecting member 2 in contact with or at intervals, and the fan motor 3 is sleeved on the connecting member 2 and the first bearing 35. Since the first bearing 35 is made of metal, it has a higher physical strength and can provide stronger support for the fan motor 3. At the same time, the supporting strength of the first bearing 35 is higher, which avoids the problem of the connecting member 2 being damaged and broken due to excessive force when the fan motor 3 rotates at high speed, thereby improving the service life of the fan module. At the same time, the provision of the first bearing 35 shortens the length of the connecting member 2. The shortened length shortens the torque of the connecting member 2 when it is subjected to force, and it bears a greater force from the fan motor 3, making the rotation of the fan motor 3 more stable and the air outlet efficiency higher.

[0323] Option 6 is shown in Figures 6-1 to 6-10.

[0324] Example 1

[0325] Please refer to Figures 6-1 and 6-2. Figure 6-1 is a schematic diagram of the overall structure of the fan module of this embodiment; Figure 6-2 is a schematic diagram of the exploded structure of the fan module of this embodiment.

[0326] As shown in Figures 6-1 and 6-2, a fan module includes a housing 1, a connector 2, an assembly base 3, and a fan assembly 4. The connector 2 is disposed within the housing 1 and defines an air duct. The assembly base 3 is connected to the connector 2. The fan assembly 4 is sleeved and connected to the assembly base 3 and is connected to the assembly base 3 via a rotating shaft 414.

[0327] In the above embodiment, the connector 2 is disposed within the housing 1, the assembly base 3 is connected to the connector 2, and the fan assembly 4 is connected to the assembly base 3. The assembly base 3 and the fan assembly 4 are connected in two ways. First, a portion of the structure of the fan assembly 4 is sleeved and mounted on the assembly base 3; second, a portion of the structure of the fan assembly 4 is also connected to the assembly base 3 via a rotating shaft 414. The reusable connection between the fan assembly 4 and the assembly base 3 not only increases the stability of the connection between the fan assembly 4 and the assembly base 3, but also significantly reduces the space occupied by the fan assembly 4 within the housing 1, further reducing the volume of the fan module.

[0328] In this embodiment, the housing 1 is cylindrical, and a cylindrical air cavity 11 is defined within the cylinder. However, the shape of the housing 1 is not limited thereto. Depending on the specific application scenario, in some embodiments, the shape of the housing 1 can be a triangle, a quadrilateral, a pentagon, other polygons, or other regular shapes.

[0329] Please refer to FIG6-3, which is a cross-sectional view of the fan module of this embodiment.

[0330] As shown in FIG6-3 , in this embodiment, the housing 1 is provided with an air cavity 11 extending through its upper and lower surfaces. The air cavity 11 is cylindrical. However, the shape of the air cavity 11 is not limited thereto. Depending on the specific application scenario, in some embodiments, the air cavity 11 can be shaped like a star, a heart, a racetrack, or a polygon.

[0331] Please refer to Figures 6-4 and 6-5. Figure 6-4 is a structural schematic diagram of the shell of this embodiment from a first perspective; Figure 6-5 is a structural schematic diagram of the shell of this embodiment from a second perspective.

[0332] As shown in Figures 6-4 and 6-5, the connecting member 2 includes: a connecting ring 21 and a plurality of connecting plates 22. The plurality of connecting plates 22 are arranged around the connecting ring 21. One end of each of the plurality of connecting plates 22 is connected to the inner surface of the shell 1, and the other end of each of the connecting plates 22 is connected to the connecting ring 21. Two adjacent connecting plates 22 among the plurality of connecting plates 22 are enclosed to form an air duct.

[0333] The arrangement of the plurality of connecting plates 22 enables the connecting ring 21 to be suspended in the housing 1 . Every two connecting plates 22 among the plurality of connecting plates 22 enclose an air duct, enabling the airflow pushed by the fan assembly 4 to flow through the air duct.

[0334] In this embodiment, the number of connecting plates 22 is 7. However, the number of connecting plates 22 is not limited thereto, and in some embodiments, the number of connecting plates 22 can be 2, 3, 4, 5, 6, 8, or more, depending on the specific application scenario.

[0335] In some embodiments, the connecting member 2 is a plate disposed inside the housing 1 . The shape of the plate is the same as the shape of the internal cavity of the housing 1 , and a plurality of holes for airflow are provided on the plate.

[0336] The connector 2 and the housing 1 are manufactured by an integral molding process. However, the manufacturing process of the connector 2 and the housing 1 is not limited thereto. Depending on the specific application scenario, in some embodiments, the connector 2 and the housing 1 can be separately machined and molded, and then assembled and connected by gluing, snapping, riveting, or screwing.

[0337] In some embodiments, the connecting ring 21 includes an outer connecting ring 211 and an inner connecting ring 212. The inner connecting ring 212 is disposed within the outer connecting ring 211. The outer connecting ring 211 is connected to a plurality of connecting plates 22. The assembly base 3 is connected to the inner connecting ring 212. The thickness of the outer connecting ring 211 is greater than the thickness of the inner connecting ring 212. It should be noted that the thickness in this embodiment refers to the height in the vertical direction perpendicular to the horizontal direction.

[0338] The thickness of the connecting outer ring 211 is greater than the thickness of the connecting inner ring 212, so that when the connecting inner ring 212 is set in the connecting outer ring 211, there is still empty space in the connecting outer ring 211. The empty space can be used to set the assembly base 3, thereby improving the space utilization of the fan module.

[0339] The end of each of the multiple connecting plates 22 facing the fan assembly 4 is bent and extended toward the fan assembly 4 to form an air guide plate 23 . The bending direction of the air guide plate 23 is opposite to the rotation direction of the fan assembly 4 .

[0340] Specifically, each of the plurality of connecting plates 22 is formed with an air guide plate 23 at the end facing the fan blades 42 in the fan assembly 4. The curvature of the air guide plate 23 is opposite to the rotational direction of the fan blades 42. In this embodiment, the curvature of the air guide plate 23 is opposite to the rotational direction of the fan blades 42, meaning that the curvature of the air guide plate 23 is opposite to the rotational direction of the fan blades 42. This is not limited to the specific embodiment in which the curvature of the air guide plate 23 is 180° to the rotational direction of the fan blades 42. In some embodiments, the curvature of the air guide plate 23 at an obtuse angle to the rotational direction of the fan blades 42 is also within the scope of the definition of "opposite" in this embodiment.

[0341] The bending direction of the air guide plate 23 is opposite to the rotation direction of the fan blades 42. When the fan blades 42 rotate, the airflow will be driven to rotate in the same direction. At this time, the bending direction of the air guide plate 23 is opposite to the rotation direction of the airflow. When the airflow rotates, it contacts and collides with the curved part of the air guide plate 23. Due to the opposite directions, the angle between the airflow and the curved part of the air guide plate 23 is greater than 90 degrees. The airflow contacts the air guide plate 23 at a larger angle, which can reduce the kinetic energy loss of the airflow contacting the air guide plate 23. During the contact process at a larger angle, the air guide plate 23 has an obvious guiding effect on the airflow, with little energy loss, which greatly improves the air outlet efficiency.

[0342] In some embodiments, the air guide plate 23 is disposed between the fan assembly 4 and the housing 1 , and the air guide plate 23 is connected to the inner surface of the housing 1 , with a gap between the air guide plate 23 and the fan assembly 4 .

[0343] Specifically, the air guide plate 23 is disposed between the fan motor 41 and the housing 1 , and a gap is provided between the air guide plate 23 and the fan motor 41 .

[0344] In some embodiments, the air guide plate 23 is disposed between the hub 421 of the fan blade 42 and the housing 1 , and a gap is provided between the air guide plate 23 and the hub 421 .

[0345] The air guide plate 23 is disposed between the fan blades 42 and the housing 1, with a gap between the air guide plate 23 and the fan blades 42. Due to the gap between the air guide plate 23 and the fan blades 42, after the airflow contacts the air guide plate 23, part of the airflow flows along the guide of the air guide plate 23 toward the air outlet, while the remaining part of the airflow flows through the gap between the air guide plate 23 and the fan blades 42 to the next air guide plate 23. The gap between the air guide plate 23 and the fan blades 42 provides a channel for air pressure balance between the air guide plates 23, avoiding the problem of inconsistent air pressure on both sides of the air guide plate 23 due to the complete closure of the air guide plate 23, which in turn affects the air output efficiency of the fan module.

[0346] The assembly base 3 is detachably connected to the connector 2 , and the assembly base 3 is made of metal.

[0347] The connector 2 is provided with a plurality of first fixing holes 215, and the assembly base 3 is provided with a plurality of corresponding second fixing holes 311. The plurality of first fixing holes 215 and the plurality of second fixing holes 311 are connected by screws. The screw connection allows the assembly base 3 to be disassembled, making it easy to replace and repair the assembly base 3.

[0348] However, the detachable connection between the connector 2 and the assembly base 3 is not limited to screw connection. Depending on the specific application scenario, in some embodiments, the connector 2 and the assembly base 3 can also be connected by a snap or lock connection.

[0349] A positioning groove 214 is formed on the connecting member 2 , and one end of the assembly base 3 connected to the connecting member 2 is disposed in the positioning groove 214 .

[0350] The positioning groove 214 is provided on the connecting inner ring 212 of the connector 2. The setting of the positioning groove 214 enables the base 31 in the assembly base 3 to be embedded in the positioning groove 214. This method facilitates the positioning and alignment of the first fixing hole 215 and the second fixing hole 311, thereby optimizing the assembly process. At the same time, since the assembly base 3 needs to withstand the torque generated by the fan assembly 4 when the fan assembly 4 rotates, and the magnitude of the torque is proportional to the rotation speed of the fan assembly 4. Therefore, when the generated torque is borne by the screw, the strength requirements of the screw are relatively high, and at the same time, the service life of the screw will be affected. The setting of the positioning groove 214 can deflect and stop the assembly base 3 through the positioning groove 214, which is equivalent to sharing a part of the torque by the positioning groove 214, greatly reducing the loss of the screw and extending the service life of the fan module.

[0351] Specifically, the positioning groove 214 is configured as a rounded triangle, and the corresponding base 31 of the assembly base 3 is also configured as a rounded triangle that matches the positioning groove 214. The edges of the two adjacent rounded corners of the positioning groove 214 are inwardly curved, and the corresponding edges of the two adjacent rounded corners of the assembly base 3 are also inwardly curved. The inwardly curved structure makes the edge of the positioning groove 214 that contacts the assembly base 3 in an arc shape. When the fan assembly 4 rotates, the force applied by the assembly base 3 on the positioning groove 214 is decomposed in different directions along the arc edge, rather than being concentrated in the same direction. This further reduces the force strength at the edge of the positioning groove 214 and improves the service life of the fan assembly 4.

[0352] In some embodiments, the shape of the positioning groove 214 and the corresponding shape of the assembly base 3 are not limited thereto. Depending on the specific application scenario, the shape of the positioning groove 214 can be (but not limited to) a running field shape, a polygon, an ellipse, or other shapes that can have a limiting effect on the embedded objects of the same shape. Similarly, the shape of the base 31 of the assembly base 3 can also be changed accordingly based on the shape of the positioning groove 214.

[0353] In this embodiment, the number of first fixing holes 215 is three, and the corresponding number of second fixing holes 311 can also be three. The first fixing holes 215 are respectively arranged at the rounded corners of the rounded triangle, and the second fixing holes 311 are respectively arranged at the rounded corners of the rounded triangle of the base 31. However, the number of first fixing holes 215 and the number of second fixing holes 311 are not limited to this. Depending on the specific application scenario, in some embodiments, the number of first fixing holes 215 and the number of second fixing holes 311 are (but not limited to) 2, 4, 5, or more.

[0354] In this embodiment, the assembly base 3 is made of metal, and the shell 1 and the connector 2 are made of plastic. The use of metal can make the assembly base 3 more physically strong and suitable for the high-speed rotation of the fan assembly 4.

[0355] Specifically, the assembly base 3 is made of aluminum alloy. However, the material of the assembly base 3 is not limited thereto. Depending on the specific application scenario, in some embodiments, the assembly base 3 can be made of (but not limited to) conventional metals such as iron, aluminum, and copper, or can be made of an alloy of iron or copper.

[0356] In some embodiments, the assembly base 3 and the housing 1 can be made of the same plastic material.

[0357] The fan assembly 4 includes a fan motor 41 and fan blades 42 . The fan motor 41 is sleeved and connected to the assembly base 3 . The fan motor 41 is connected to the assembly base 3 via a rotating shaft 414 . The fan blades 42 are connected to the assembly base 3 via a rotating shaft 414 .

[0358] In the fan assembly 4, the fan motor 41 is connected to the assembly base 3 and the rotating shaft 414 respectively. The two connection methods can make the fan motor 41 suspended in the shell 1. At the same time, the sleeve installation can make the space occupied by the fan motor 41 and the assembly base 3 smaller.

[0359] The fan motor 41 includes: a coil 411, a magnetic ring 412 and a motor housing 413. The coil 411 is mounted on the assembly base 3, the magnetic ring 412 is mounted on the coil 411, and the motor housing 413 is mounted on the magnetic ring 412. The motor housing 413 is fixedly connected to the rotating shaft 414 so that the fan housing 1 drives the rotating shaft 414 to rotate.

[0360] In this embodiment, when coil 411 is energized, it drives magnetic ring 412 to rotate, which in turn drives motor housing 413 to rotate, and finally, motor housing 413 drives shaft 414 to rotate. This motor drive method enables fan motor 41 to be mounted on assembly base 3. Furthermore, because magnetic ring 412 has a larger force-bearing area than the driven motor, fan motor 41 can rotate faster.

[0361] Coil 411 is interference-fitted with assembly base 3, magnetic ring 412 is magnetically coupled to coil 411, and motor housing 413 is interference-fitted with shaft 414. During rotation, magnetic ring 412 and coil 411 rotate while suspended in mid-air, resulting in less physical friction than conventional motors. This further increases the speed of fan motor 41.

[0362] In some embodiments, the connection method between the coil 411 and the assembly base 3 is not limited to interference fit. Depending on the specific application scenario, the connection method between the coil 411 and the assembly base 3 can also be (but not limited to): gluing, welding, riveting, screw connection and other fixing methods.

[0363] In some embodiments, the connection between the motor housing 413 and the rotating shaft 414 is not limited to interference fit. Depending on the specific application scenario, the connection between the motor housing 413 and the rotating shaft 414 can also be (but not limited to): gluing, welding, riveting, screw connection, etc.

[0364] Please refer to Figure 6-6, which is a schematic structural diagram of the motor housing of this embodiment.

[0365] As shown in FIG6-6 , in some embodiments, a limit stop 417 is provided on the interior of the motor housing 413, and the limit stop 417 abuts against one end of the magnetic ring 412. The provision of the limit stop 417 within the motor housing 413 allows for quick assembly and positioning of the magnetic ring 412, preventing the position of the motor housing 413 within the housing 1 from shifting due to inconsistent assembly of the magnetic ring 412, which could lead to poor rotational stability of the fan module and susceptibility to friction damage.

[0366] The stop edge 417 on the motor housing 413 is formed by the varying thickness of the sidewalls of the motor housing 413. The sidewall thickness of the motor housing 413 is greater at the end adjacent to the fan blades 42, while the sidewall thickness of the motor housing 413 at the end adjacent to the connector 2 is less. This varying thickness of the sidewalls of the motor housing 413 creates the stop edge 417 within the motor housing 413.

[0367] In some embodiments, the limiting edge 417 inside the motor housing 413 can be a limiting edge 417 formed by a protrusion on the inner surface of the motor housing 413 .

[0368] The fan blades 42 include a hub 421 and a plurality of blades 422 . The plurality of blades 422 are arranged around the hub 421 , and the hub 421 is connected to the rotating shaft 414 .

[0369] Please refer to Figures 6-7 and 6-8. Figure 6-7 is a structural schematic diagram of the fan blades of this embodiment from a first perspective; Figure 6-8 is a structural schematic diagram of the fan blades of this embodiment from a second perspective.

[0370] As shown in Figures 6-7 and 6-8, in this embodiment, the number of blades 422 is 9. However, the number of blades 422 is not limited thereto. Depending on the specific application scenario, in some embodiments, the number of blades 422 can be (but not limited to): 2, 3, 4, 5, 6, 7, 8, 10, 11, or more.

[0371] The hub 421 includes a top surface 421a, a bottom surface 421c, and side edges 421b. The cross-sectional area of ​​the bottom surface 421c is larger than that of the top surface 421a, and there is a smooth transition between the top surface 421a and the side edges 421b. That is, in this embodiment, the hub 421 is configured in the shape of a bullet with a flat head. This shape of the hub 421 allows the airflow passing through the blades 422 to flow along the curved surface formed by the smooth transition between the top surface 421a and the side edges 421b, effectively guiding the airflow and forming a wall effect, thereby improving the efficiency of the airflow flowing through the fan blades 42 and thereby improving the air output efficiency of the fan module.

[0372] However, the shape of the hub 421 is not limited thereto. Depending on the specific application scenario, in some embodiments, the shape of the hub 421 can be (but not limited to): hemispherical, conical, truncated cone, cylindrical, etc.

[0373] The top surface 421a of the hub 421 is a circular surface. However, the shape of the top surface 421a is not limited thereto. Depending on the specific application scenario, in some embodiments, the top surface 421a of the hub 421 can also be conical, polygonal, elliptical, or other shapes.

[0374] Each of the multiple blades 422 includes a first end 422a and a second end 422b opposite to the first end 422a. The length of the first end 422a is greater than the length of the second end 422b. The first end 422a is located adjacent to the top surface 421a of the hub 421, and the second end 422b is located adjacent to the bottom surface 421c of the hub 421. In each blade 422, the first end 422a is used to push the airflow into the fan blade 42 when the fan blade 42 rotates. The longer length of the first end 422a is conducive to pushing the airflow. The second end 422b is located at the end of the airflow direction. The reduction in the length of the second end 422b is conducive to reducing the size of the space for airflow flow, compressing the airflow, increasing the initial kinetic energy of the airflow, and thereby improving the air outlet efficiency of the fan module.

[0375] Each blade 422 has a blade edge 422c. The thickness of each blade 422 gradually increases from the first end 422a to the blade edge 422c, and gradually decreases from the blade edge 422c to the second end 422b. The varying thicknesses of the blades 422 at different locations result in each blade 422 being thinner at both ends and thicker in the middle. This structure enhances the airflow-cutting capabilities of the blades 422 at both ends and reduces air resistance at both ends. The increased thickness in the middle enhances the physical strength of the blades 422. Furthermore, the increased thickness of the blades 422 reduces the space between adjacent blades 422, thereby boosting the pressure of the airflow.

[0376] Please refer to Figures 6-9 and 6-10. Figure 6-9 is a structural diagram of the assembly base of this embodiment from a first perspective; Figure 6-10 is a structural diagram of the assembly base of this embodiment from a second perspective.

[0377] As shown in Figures 6-9 and 6-10, the assembly base 3 includes: a base 31 and a connecting column 32, the base 31 is connected to the connecting member 2, the connecting column 32 is connected to the base 31, and the fan assembly 4 is sleeved and connected to the connecting column 32.

[0378] The base 31 is shaped like a rounded triangle, and the edges of the two adjacent rounded corners of the base 31 are also configured as inner arcs. This inner arc structure allows the force applied by the base 31 to the positioning groove 214 to be distributed in different directions along the arc edge when the fan assembly 4 rotates, rather than being concentrated in the same direction. This further reduces the force applied to the edge of the positioning groove 214 and increases the service life of the fan assembly 4.

[0379] In some embodiments, the shape of the base 31 is not limited thereto. Depending on the specific application scenario, the shape of the base 31 can be (but not limited to): a running field shape, a polygonal shape, an elliptical shape, etc.

[0380] The connecting column 32 includes: a first column 321 and a second column 322. The diameter of the first column 321 is larger than the diameter of the second column 322. The first column 321 is connected to the base 31, and the second column 322 is connected to the first column 321. The fan assembly 4 is sleeved and connected to the second column 322.

[0381] The diameter of the first column 321 is larger than that of the second body, so that the first column 321 and the second column 322 form a stepped structure. The first column 321 can serve as a stopper for the fan motor 41 or the PCB circuit board, facilitating the assembly of the fan motor 41 or the PCB circuit board.

[0382] In some embodiments, the shape of the connecting column 32 is not limited thereto. Depending on the specific application scenario, the connecting column 32 can be (but not limited to): a straight column, a prismatic column, or a composite structure consisting of a frustum and a straight column.

[0383] A connecting hole 33 is provided on the connecting column 32, and a first bearing 34 and a second bearing 35 are respectively provided at both ends of the connecting hole 33. The first bearing 34 and the second bearing 35 are inserted and passed through by rotating. A groove 414a is provided on the end of the rotating shaft 414 passing through the second bearing 35, and a retaining spring 415 is connected to the groove 414a.

[0384] The arrangement of the first bearing 34 and the second bearing 35 allows for smoother rotation of the rotating shaft 414. Furthermore, the arrangement of the two rotating shafts 414 stabilizes the linear rotation of the rotating shaft 414, thereby increasing the rotation speed of the fan motor 41. The arrangement of the retaining groove 414a and the retaining spring 415 prevents the rotating shaft 414 from falling off the first bearing 34 and the second bearing 35, thereby enhancing the stability and reliability of the connection of the rotating shaft 414.

[0385] The base 31 includes: a first protrusion 312, a second protrusion 313 and a third protrusion 314, wherein an inner arc notch 315 is formed between the first protrusion 312, the second protrusion 313 and the third protrusion 314, and an outer arc piece 316 is provided between the second protrusion 313 and the third protrusion 314.

[0386] The second fixing holes 311 are respectively provided on the first protrusion 312, the second protrusion 313, and the third protrusion 314. The thickness of the outer arc piece 316 is less than the thickness of the main body of the base 31, and the second wiring hole 317 is provided on the outer arc piece 316. The structure of the inner arc notch 315 makes the edge where the positioning groove 214 contacts the base 31 arc-shaped. When the fan assembly 4 rotates, the force applied by the base 31 on the positioning groove 214 is decomposed in different directions along the arc edge, rather than being concentrated in the same direction. This further reduces the force strength at the edge of the positioning groove 214 and improves the service life of the fan assembly 4.

[0387] In some embodiments, a connecting platform 416 is provided at the position where the fan assembly 4 is connected to the rotating shaft 414. The rotating shaft 414 passes through the connecting platform 416 and is interference fit with the connecting platform 416. The end of the connecting platform 416 facing the first bearing 34 abuts against the first inner ring 341 of the first bearing 34.

[0388] Specifically, at the location where the motor housing 413 of the fan assembly 4 connects to the rotating shaft 414, a protrusion extends in the direction of the connecting column 32 to form a connecting platform 416. The provision of the connecting platform 416 can increase the contact area between the motor housing 413 and the rotating shaft 414, thereby enhancing the connection strength between the motor housing 413 and the rotating shaft 414. This can effectively prevent the problem of excessive local force caused by the small contact area between the motor housing 413 and the rotating shaft 414, resulting in unstable connection and shortened service life.

[0389] In some embodiments, the connection between the connecting platform 416 and the rotating shaft 414 is not limited to interference fit. Depending on the specific application scenario, the connection between the connecting platform 416 and the rotating shaft 414 can also be (but not limited to): gluing, welding, riveting, screw connection, etc.

[0390] The connecting platform 416 abuts the first inner ring 341 of the first bearing 34. When the motor housing 413 drives the rotating shaft 414 to rotate, in addition to the rotating shaft 414 driving the first inner ring 341, the connecting platform 416 also provides driving force for the first inner ring 341. This effectively prevents the rotating shaft 414 and the first inner ring 341 from rotating relative to each other or slipping over time, which can lead to asynchronous rotation of the first inner ring 341 and the rotating shaft 414, reducing the rotation efficiency of the rotating shaft 414. Furthermore, when the motor housing 413 rotates, it drives the first inner ring 341 of the first bearing 34 to rotate, which in turn drives the rotating shaft 414 to rotate synchronously. This rational design effectively extends the load-bearing length of the rotating shaft 414, shortens the rotating torque of the rotating shaft 414, reduces the force intensity per unit area of ​​the rotating shaft 414, and prolongs its service life. Furthermore, it ensures more stable rotation of the rotating shaft 414, reducing vibration and noise in the fan module.

[0391] In some embodiments, a sleeve 36 is provided between the second bearing 35 and the retaining spring 415 . The sleeve 36 is sleeved on the rotating shaft 414 , and one end of the sleeve 36 facing the second rotating shaft 414 abuts against the second inner ring 351 of the second bearing 35 .

[0392] The provision of the sleeve 36 prevents frictional damage to the retaining ring 415 and the second bearing 35, which could occur if the rotating shaft 414 slips between the first bearing 34 and the second bearing 35. The end of the sleeve 36 facing the second bearing 35 abuts the second inner ring 351, allowing the sleeve 36 to rotate synchronously with the rotating shaft 414 and the second inner ring 351. This prevents friction and collision damage to the rotating shaft 414 and the second bearing 35, which could occur due to a lack of driving force.

[0393] In some embodiments, one end of the sleeve 36 abuts against the retaining spring 415 , and the other end abuts against the second inner ring 351 of the second bearing 35 .

[0394] The shaft sleeve 36 is made of alloy material or metal material. However, the material of the shaft sleeve 36 is not limited thereto. Depending on the specific application scenario, in some embodiments, the shaft sleeve 36 can be made of plastic or rubber material.

[0395] In some embodiments, one end of the rotating shaft 414 connected to the retaining spring 415 is located inside the connecting inner ring 212 to prevent the protruding end of the rotating shaft 414 from causing friction damage with other components.

[0396] In some embodiments, a PCB is disposed between the base 31 and the fan assembly 4 and is mounted on the connecting post 32. The PCB is used to control functions such as starting, stopping, and speed change of the fan motor 41. The PCB is disposed between the base 31 and the fan assembly 4 and mounted on the connecting post 32. This saves space within the fan module and improves space utilization within the fan module. Furthermore, the distance between the PCB and the fan motor 41 is shortened, reducing the length of the wire connecting the two and consumables.

[0397] The PCB circuit board is configured as a ring as a whole. However, the shape of the PCB circuit board is not limited thereto. Depending on the specific application scenario, in some embodiments, the shape of the PCB circuit board can be (but not limited to): polygonal, elliptical, or racetrack-shaped.

[0398] The PCB is connected to the connecting column 32 by means of interference fit. However, the fixing method of the PCB is not limited thereto. Depending on the specific application scenario, in some embodiments, the PCB is also fixed to the coil 411 by screws.

[0399] In some embodiments, a first wiring hole 213 is provided on the connector 2, and a second wiring hole 317 is provided on the base 31 corresponding to the first wiring hole 213, and the thickness of the base 31 at the position where the second wiring hole 317 is provided is smaller than the thickness at other positions of the base 31.

[0400] To facilitate wiring and prevent the wires connected to the PCB from leaking, a first wiring hole 213 is provided on the connector 2, and a second wiring hole 317 is provided on the base 31. The provision of the first wiring hole 213 and the second wiring hole 317 allows the wires to be routed in a manner that prevents leakage, thereby improving the smoothness of the airflow within the fan module. At the same time, the thickness of the base 31 at the location where the second wiring hole 317 is provided is thinner than the thickness at other locations on the base 31, which can reduce the overall weight of the base 31 and make the fan module more lightweight. The design of the thickness variation cooperates with the design of the positioning groove 214 to make the side of the base 31 facing the fan motor 41 more flat and neat.

[0401] In some embodiments, a flexible sleeve 5 is provided over the housing 1, with annular protrusions 51 and dot-shaped protrusions 52 alternatingly arranged on its exterior. The provision of the flexible sleeve 5 can increase the friction between the fan module and external objects or other mating structures, thereby enhancing the connection stability of the fan module. Furthermore, the provision of the flexible sleeve 5 can effectively buffer the physical vibrations generated by the fan module during operation, making the fan module's rotation more stable and generating less noise.

[0402] The flexible sleeve 5 is provided with alternating annular protrusions 51 and dot-shaped protrusions 52 on its exterior. Specifically, in some embodiments, the annular protrusions 51 are provided at both ends of the flexible sleeve 5, while the dot-shaped protrusions 52 are provided between the two annular protrusions 51. Alternatively, the annular protrusions 51 are provided at both ends and in the middle of the flexible sleeve 5, while the dot-shaped protrusions 52 are provided between two adjacent annular protrusions 51. However, the alternating arrangement of the annular protrusions 51 and dot-shaped protrusions 52 is not limited to this. The number of annular protrusions 51 can be 4, 5, 6, or more. The dot-shaped protrusions 52 can also be provided at one or both ends of the flexible sleeve 5.

[0403] The alternating arrangement of the annular protrusions 51 and the dot-shaped protrusions 52 provides the annular protrusions 51 and the dot-shaped protrusions 52 with a larger deformation space, facilitating the assembly of the fan module. At the same time, the larger deformation space can improve the buffering performance of the flexible sleeve 5.

[0404] The ratio range of the inner diameter of the housing 1 to the maximum diameter of the fan blades 42 is 1.01-1.15. The ratio range of the inner diameter of the housing 1 to the maximum diameter of the fan blades 42 defines the gap between the housing 1 and the maximum diameter of the fan blades 42. When the fan blades 42 rotate, they generate centrifugal force on the airflow passing through the fan blades 42. Under the action of the centrifugal force, the airflow moves laterally and collides with the inner wall of the housing 1, generating turbulence, thereby affecting the airflow field in the housing 1, resulting in a low air outlet efficiency of the fan module. Limiting the ratio range of the inner diameter of the housing 1 to the maximum diameter of the fan blades 42 to between 1.01-1.15 reduces the gap between the fan blades 42 and the housing 1, reduces the stroke of the lateral airflow under the action of centrifugal force, and limits the speed of the airflow when it contacts the inner edge of the housing 1 to a smaller preferred range. Therefore, this ratio can reduce the energy loss when the airflow collides with the housing 1, reduce the probability of turbulence, and improve the stability of the airflow field. At the same time, since the ratio range of the inner diameter of the shell 1 to the maximum diameter of the fan blades 42 is limited to between 1.01-1.15, within this ratio range, the distance between the fan blades 42 and the shell 1 is small, which can have an excellent interception effect on the return airflow in the fan blades 42, preventing the cyclone generated by the return airflow from affecting the air intake of the fan blades 42, thereby improving the air intake efficiency of the fan module. The improvement of the air intake efficiency improves the overall air outlet efficiency of the fan module.

[0405] In some embodiments, the length ratio of the first end 422a and the second end 422b is in the range of 1.4-1.9. The airflow flowing through the fan flows from the first end 422a to the second end 422b, and the direction of the first end 422a facing the second end 422b gradually decreases. This reduction process cooperates with the size change of the hub 421 to gradually reduce the space for the airflow to flow, gradually pressurize the convection, and increase the initial velocity of the airflow. However, since there is a gap between the fan blades 42 and the housing 1, when the pressure of the airflow entering the first end 422a and flowing out of the second end 422b is obviously too large, since it is not a completely enclosed space, the airflow will have a backflow phenomenon due to excessive pressure. The backflow airflow will impact the intake airflow of the fan module to form a cyclone, reducing the air intake efficiency of the fan module. The length ratio range of the first end 422a and the second end 422b is limited to 1.4-1.9. Within this ratio range, the pressure of the airflow flowing through the fan blade 42 is adjusted within the optimal range, minimizing the backflow problem caused by excessive pressure. At the same time, within the range of this ratio, the first end 422a can most effectively intercept and utilize the return airflow that gradually overflows from the edge of the blade 422, minimizing the probability of the return airflow flowing out of the housing 1. The combination of the two effects can make the airflow entering the first end 422a and the airflow outflowing from the end of the airflow approach the optimal value of 1:1. This greatly improves the air outlet efficiency of the fan blade 42.

[0406] It should be noted that any implementation in this embodiment can be implemented independently or in combination with one or more other implementations. When implemented in combination, the combination should not be limited to the combination listed in this embodiment.

[0407] Example 2

[0408] A blowing device includes the fan module in Example 1, and the fan module serves as a core module component for assembling the blowing device.

[0409] It should be noted that the blowing device in this embodiment includes (but is not limited to): bladeless fans, desktop fans, floor fans, spherical fans, neck fans, handheld fans, industrial fans, air conditioners, hair dryers, and other products that require air circulation. The fan module in Example 1 is assembled inside the housing of the above products.

[0410] The blowing device in this embodiment has a connector 2 disposed within the housing 1, an assembly base 3 connected to the connector 2, and a fan assembly 4 connected to the assembly base 3. The assembly base 3 and the fan assembly 4 are connected in two ways. First, a portion of the structure of the fan assembly 4 is sleeved and mounted on the assembly base 3; second, a portion of the structure of the fan assembly 4 is also connected to the assembly base 3 via a rotating shaft 414. The multiplexed connection between the fan assembly 4 and the assembly base 3 not only increases the stability of the connection between the fan assembly 4 and the assembly base 3, but also significantly reduces the space occupied by the fan assembly 4 within the housing 1, thereby further reducing the volume of the fan module.

[0411] Scheme 7 is shown in Figures 7-1 to 7-6.

[0412] Example 1

[0413] Please refer to Figures 7-1 and 7-2. Figure 7-1 is a schematic diagram of the overall structure of the fan module of this embodiment; Figure 7-2 is a schematic diagram of the exploded structure of the fan module of this embodiment.

[0414] As shown in Figures 7-1 and 7-2, a fan module includes a housing 1, a fan motor 2, and fan blades 3. The fan motor 2 is disposed within the housing 1; the fan blades 3 are provided with a first balancing ring portion 33 and a second balancing ring portion 34, wherein the diameter of the first balancing ring portion 33 is larger than the diameter of the second balancing ring portion 34.

[0415] In the above embodiment, the fan motor 2 and fan blades 3 of the fan module are arranged in the housing 1, and a first balancing ring portion 33 and a second balancing ring portion 34 are provided on the fan blades 3. By filling the corresponding positions of the first balancing ring portion 33 and the second balancing ring portion 34 with balancing soil, the mass distribution of the fan blades 3 is balanced, so that the rotation efficiency and stability of the fan blades 3 are improved. At the same time, the two adjustment ring portions of the first balancing ring portion 33 and the second balancing ring portion 34 can increase the adjustable space of the fan blades 3, thereby achieving the purpose of balancing the mass deviation formed in a larger range of the fan blades 3. The diameter of the first balancing ring portion 33 is larger than the diameter of the second balancing ring portion 34. During the rotation of the fan blades 3, the torque of the first balancing ring portion 33 is greater than the torque of the second balancing ring portion 34. The same mass of balancing soil produces different regulating effects on the first balancing ring portion 33 and the second balancing ring portion 34. Therefore, this structure has different levels of balancing effect on the fan blades 3. The combination of the two can achieve more accurate mass balancing, thereby greatly improving the rotation efficiency and stability of the fan blades 3.

[0416] In this embodiment, the housing 1 is cylindrical, and a cylindrical air cavity is defined within the cylinder. However, the shape of the housing 1 is not limited thereto. Depending on the specific application scenario, in some embodiments, the shape of the housing 1 can be a triangle, a quadrilateral, a pentagon, other polygons, or other regular shapes.

[0417] In this embodiment, the housing 1 is provided with an air cavity extending through its upper and lower surfaces, and the air cavity is cylindrical. However, the shape of the air cavity is not limited thereto. Depending on the specific application scenario, in some embodiments, the air cavity can be shaped like a star, a heart, a racetrack, or a polygon.

[0418] In some embodiments, a horn or a fairing with a necked opening is further provided in the housing 1 .

[0419] The fan motor 2 is disposed within the housing 1 via a connector 4. In some embodiments, the connector 4 includes a connecting ring 41 and a plurality of connecting plates 42. The connecting plates 42 are disposed around the connecting ring 41. One end of each of the connecting plates 42 is connected to the inner surface of the housing 1, and the other end of each connecting plate 42 is connected to the connecting ring 41. Adjacent connecting plates 42 within the plurality of connecting plates 42 enclose an air duct. The connecting ring 41 and the fan motor 2 are interference-fitted or snap-fitted, or a connecting post 43 is provided on the connecting ring 41. The fan motor 2 is sleeved on the connecting post 43.

[0420] Please refer to Figure 7-3 and Figure 7-4. Figure 7-3 is a schematic diagram of the structure of the housing of this embodiment from a first perspective; Figure 7-4 is a schematic diagram of the structure of the housing of this embodiment from a second perspective.

[0421] As shown in Figures 7-3 and 7-4, the arrangement of multiple connecting plates 42 enables the connecting ring 41 to be suspended in the shell 1. Every two connecting plates 42 among the multiple connecting plates 42 form an air duct, which enables the airflow pushed by the fan assembly to flow through the air duct.

[0422] The connection member 4 is not limited to this. Depending on the specific application scenario, in some embodiments, the connection member 4 can be a connector formed perpendicular to the inner surface of the shell 1.

[0423] The fan motor 2 is fixed to the connecting ring 41. However, the fixing method of the fan motor 2 is not limited to this. Depending on the specific application scenario, in some embodiments, the connecting ring 41 is provided with a connecting post 43, and the fan motor 2 can be sleeved on the connecting post 43. The connecting post 43 can be integrally formed with the connecting ring 41, or can be fixed to the connecting ring 41 by means of clamping, riveting, screw connection, or gluing.

[0424] In some embodiments, the fan motor 2 includes a coil 22 and a magnetic ring 23. The coil 22 is sleeved on a connecting post 43 and has an interference fit with the connecting post 43. The magnetic ring 23 is disposed within the fan blade 3. One end of the rotating shaft 21 is connected to the fan blade 3, and the other end is connected to the connecting post 43.

[0425] In some embodiments, the fan motor 2 includes a coil 22, a magnetic ring 23, and a motor housing 24. The coil 22 is sleeved on a connecting post 43 and has an interference fit with the connecting post 43. The magnetic ring 23 is disposed within the motor housing 24 and sleeved on the coil 22. One end of the rotating shaft 21 is connected to the fan blades 3, and the other end is connected to the connecting post 43 and has an interference fit with the motor housing 24.

[0426] In some embodiments, the fan motor 2 is a conventional motor, which is fixed to the connecting ring 41 by means of clamping, screw fixing, riveting, adhesive connection, welding, etc.

[0427] In some embodiments, the fan motor 2 can be connected to the housing 1 via a structure within the housing 1. For example, a connecting platform is provided on the inner wall of the housing 1, and the connecting platform is connected to the fan motor 2. Alternatively, a connecting rod is extended into the housing 1, and the fan motor 2 is fixed to the connecting rod. Alternatively, two opposing clamping portions extend inward from the inner surface of the housing 1 to clamp and secure the fan motor 2.

[0428] In some embodiments, an abutment plate extends from the inner surface of the housing 1 toward the fan motor 2 to fix the fan motor 2 by clamping, or a support structure extends laterally from the inner surface of the housing 1 to fix the fan motor 2 .

[0429] The fan motor 2 is connected to the fan blades 3 via a rotating shaft 21. One end of the rotating shaft 21 is connected to the fan motor 2 and the connecting post 43, and the other end is connected to the fan blades 3. However, the connection method of the rotating shaft 21 is not limited to this. Depending on the specific application scenario, in some embodiments, the end of the rotating shaft 21 connected to the fan motor 2 is also connected to the connecting post 43. In some embodiments, when a magnetic ring 23 is fixed to the fan blades 3, one end of the rotating shaft 21 is only connected to the connecting ring 41 or the connecting post 43, and the other end is connected to the fan blades 3.

[0430] In this embodiment, the ratio range of the inner diameter of the housing 1 to the maximum diameter of the fan blades 3 is 1.01-1.15. The ratio range of the inner diameter of the housing 1 to the maximum diameter of the fan blades 3 defines the gap between the housing 1 and the maximum diameter of the fan blades 3. When the fan blades 3 rotate, they generate centrifugal force on the airflow passing through the fan blades 3. Under the action of the centrifugal force, the airflow moves laterally and collides with the inner wall of the housing 1, generating turbulence, thereby affecting the airflow field in the housing 1, resulting in a low air outlet efficiency of the fan module. Limiting the ratio range of the inner diameter of the housing 1 to the maximum diameter of the fan blades 3 to between 1.01-1.15 reduces the gap between the fan blades 3 and the housing 1, reduces the travel of the lateral airflow under the action of centrifugal force, and limits the speed of the airflow when it contacts the inner edge of the housing 1 to a smaller preferred range. Therefore, this ratio can reduce the energy loss when the airflow collides with the housing 1, reduce the probability of turbulence, and improve the stability of the airflow field. At the same time, since the ratio range of the inner diameter of the shell 1 to the maximum diameter of the fan blades 3 is limited to between 1.01-1.15, within this ratio range, the distance between the fan blades 3 and the shell 1 is small, which can have an excellent interception effect on the return airflow in the fan blades 3, preventing the cyclone generated by the return airflow from affecting the air intake of the fan blades 3, thereby improving the air intake efficiency of the fan module. The improvement of the air intake efficiency improves the overall air outlet efficiency of the fan module.

[0431] Please refer to Figures 7-5 and 7-6. Figure 7-5 is a schematic diagram of the structure of the fan blades of this embodiment from a first perspective; Figure 7-6 is a schematic diagram of the structure of the fan blades of this embodiment from a second perspective.

[0432] As shown in Figures 7-5 and 7-6, both the first balance ring portion 33 and the second balance ring portion 34 are surrounded by a plurality of balance slots 35. The independent balance slots 35, as the smallest balance unit, facilitate quantification of balance adjustment and facilitate leveling by the user. Furthermore, because the balance slots 35 of the first balance ring portion 33 and the second balance ring portion 34 have different torques, the balance slots 35 of the first balance ring portion 33 have a larger torque and can be used for coarse adjustment, while the balance slots 35 of the second balance ring portion 34 have a smaller torque and can be used for fine adjustment. The combination of the two allows for a combination of coarse and fine adjustment, resulting in more precise leveling.

[0433] The number of the balancing slots 35 of the first balancing ring portion 33 can be (but not limited to): 2, 3, 4, 5, 10, 18, 26 or more. The number of the balancing slots 35 of the first balancing ring portion 33 can be arbitrarily set based on actual needs.

[0434] The number of the balancing slots 35 of the second balancing ring portion 34 can be (but not limited to): 2, 3, 4, 5, 11, 18, 26 or more. The number of the balancing slots 35 of the second balancing ring portion 34 can be arbitrarily set based on actual needs.

[0435] In some embodiments, the first balance ring portion 33 is configured as an annular groove, and the second balance ring portion 34 is also configured as an annular groove.

[0436] In some embodiments, the number of balancing slots 35 in the first balancing ring portion 33 is greater than the number of balancing slots 35 that comprise the second balancing ring portion 34. This greater number of balancing slots 35 in the first balancing ring portion 33 than in the second balancing ring portion 34 allows for a wider adjustable range for the first balancing ring portion 33, thereby increasing the adjustable space for the fan blades 3. Furthermore, because the first balancing ring portion 33 exerts a greater torque and has a greater number of balancing slots 35, this maximizes the upper limit of the range within which the fan blades 3 can be leveled, thereby increasing the adaptability of the fan blades 3 to various scenarios.

[0437] The balancing groove 35 of the first balancing ring portion 33 is configured in a square shape. However, the shape of the balancing groove 35 of the first balancing ring portion 33 is not limited to this. Depending on the specific application scenario, in some embodiments, the shape of the balancing groove 35 of the first balancing ring portion 33 can be (but not limited to) circular, elliptical, semicircular, semi-elliptical, racetrack-shaped, wedge-shaped, or other polygonal shapes other than a quadrilateral.

[0438] The balancing groove 35 of the second balancing ring portion 34 is configured in a wedge shape. However, the shape of the balancing groove 35 of the second balancing ring portion 34 is not limited to this. Depending on the specific application scenario, in some embodiments, the shape of the balancing groove 35 of the second balancing ring portion 34 can be (but not limited to) circular, elliptical, semicircular, semi-elliptical, racetrack-shaped, polygonal, etc.

[0439] The fan blades 3 include: a hub 31 and a plurality of blades 32 . The plurality of blades 32 extend obliquely around the surface of the hub 31 . The hub 31 is connected to the rotating shaft 21 .

[0440] In this embodiment, the number of blades 32 is 9. However, the number of blades 32 is not limited thereto. Depending on the specific application scenario, in some embodiments, the number of blades 32 can be (but not limited to): 2, 3, 4, 5, 6, 7, 8, 10, 11, or more.

[0441] The first balancing ring portion 33 and the second balancing ring portion 34 are both arranged on the surface of the hub 31. This arrangement of the first balancing ring portion 33 and the second balancing ring portion 34 facilitates the filling of balancing soil and makes the leveling work more convenient.

[0442] In some embodiments, the first balancing ring portion 33 is disposed on the inner surface of the hub 31, and the second balancing ring portion 34 is disposed on the outer surface of the hub 31. This arrangement of the first balancing ring portion 33 and the second balancing ring portion 34 allows for more direct adjustment of mass imbalances on the inner surface of the hub 31. Furthermore, the balancing soil within the first balancing ring portion 33 maintains a more stable connection due to the centrifugal force of the rotating fan blades 3.

[0443] The hub 31 includes: a top surface 311, a bottom surface 313 and a side 312. The cross-sectional area of ​​the bottom surface 313 is larger than the cross-sectional area of ​​the top surface 311, and there is a smooth transition between the top surface 311 and the side 312. The first balance ring portion 33 is arranged on the side 312 and connected to the bottom surface 313, and the second balance ring portion 34 is arranged on the side 312.

[0444] That is, in this embodiment, the hub 31 is constructed in the shape of a bullet with a flat head. This shape of the hub 31 allows the airflow passing through the blades 32 to flow along the curved surface formed by the smooth transition between the top surface 311 and the side edges 312, creating a Coanda effect. This effectively guides the airflow, improves the efficiency of the airflow flowing through the fan blades 3, and thus improves the air output efficiency of the fan module.

[0445] The first balancing ring portion 33 is disposed on the side edge 312 and communicates with the bottom surface 313. The second balancing ring portion 34 is also disposed on the side edge 312. The first balancing ring portion 33 is positioned at the location of the wheel hub 31 where the torque is greatest, maximizing the leveling effect of the first balancing ring portion 33 and raising the upper limit of leveling. The combination of the first balancing ring portion 33 and the second balancing ring portion 34 allows for more consistent leveling of the fan blades 3, improving the upper limit and accuracy of leveling.

[0446] However, the shape of the hub 31 is not limited thereto. Depending on the specific application scenario, in some embodiments, the shape of the hub 31 can be (but not limited to): hemispherical, conical, truncated cone, cylindrical, etc.

[0447] The top surface 311 of the hub 31 is a circular surface. However, the shape of the top surface 311 is not limited thereto. Depending on the specific application scenario, in some embodiments, the top surface 311 of the hub 31 can also be conical, polygonal, elliptical, or other shapes.

[0448] The bottom surface 313 of the hub 31 has an opening that communicates with the internal accommodating cavity of the hub 31. A connecting sleeve is disposed within the accommodating cavity. In some embodiments, the connecting sleeve is surrounded by a plurality of reinforcing ribs, one end of each rib being connected to the connecting sleeve and the other end being connected to the inner surface of the hub 31.

[0449] Each blade 32 among the multiple blades 32 includes a first end 321 and a second end 322 opposite to the first end 321, the length of the first end 321 is greater than the length of the second end 322, the first balance ring portion 33 is arranged on a side adjacent to the second end 322, and the second balance ring portion 34 is arranged on a side adjacent to the first end 321.

[0450] The first end 321 is located adjacent to the top surface 311 of the hub 31, while the second end 322 is located adjacent to the bottom surface 313 of the hub 31. In each blade 32, the first end 321 is used to push air into the fan blade 3 when the fan blade 3 rotates. The longer length of the first end 321 facilitates the promotion of airflow. The second end 322 is located at the end of the airflow direction. The reduced length of the second end 322 helps to reduce the size of the airflow space, compress the airflow, increase the initial kinetic energy of the airflow, and thus improve the air output efficiency of the fan module.

[0451] In some embodiments, the length ratio of the first end 321 to the second end 322 is in the range of 1.4-1.9. The airflow flowing through the fan flows from the first end 321 to the second end 322, and the direction of the first end 321 facing the second end 322 gradually decreases. This reduction process cooperates with the size change of the hub 31 to gradually reduce the space for the airflow to flow, gradually pressurize the convection, and increase the initial velocity of the airflow. However, due to the gap between the fan blades 3 and the housing 1, when the pressure of the airflow entering the first end 321 and flowing out of the second end 322 is obviously too high, since it is not a completely enclosed space, the airflow will flow back due to the excessive pressure. The backflow airflow will impact the intake airflow of the fan module to form a cyclone, reducing the air intake efficiency of the fan module. The length ratio of the first end 321 to the second end 322 is limited to 1.4-1.9. Within this ratio range, the airflow pressure flowing through the fan blades 3 is adjusted within the optimal range, minimizing the backflow problem caused by excessive air pressure. At the same time, within this ratio range, the first end 321 can most effectively intercept and utilize the return airflow that gradually overflows from the edge of the blade 32, minimizing the probability of the return airflow flowing out of the housing 1. The combination of these two functions allows the airflow entering the first end 321 and the airflow outflowing the end to approach the optimal value of 1:1, greatly improving the air output efficiency of the fan blade 3.

[0452] The first balance ring portion 33 is arranged on a side adjacent to the second end portion 322, and the second balance ring portion 34 is arranged on a side adjacent to the first end portion 321. The first balance ring portion 33 and the second balance ring portion 34 are arranged on both sides of the blade 32, and the spatial layout is reasonable, which will not affect the normal layout of the surface of the fan blade 3. The first balance ring portion 33 and the second balance ring portion 34 distributed on both sides of the blade 32 can better adjust the imbalance problem of the fan blade 3 caused by the uneven mass distribution of the blade 32. At the same time, the distance between the first balance ring portion 33 and the second balance ring portion 34 is greater than the length of the blade 32, which can expand the leveling coverage of the first balance ring portion 33 and the second balance ring portion 34 to the entire fan page, thereby improving the leveling range.

[0453] Each blade 32 has a blade edge 323. The thickness of each blade 32 gradually increases from the first end 321 to the blade edge 323 and gradually decreases from the blade edge 323 to the second end 322. The varying thicknesses of the blades 32 at different locations result in each blade 32 being thinner at both ends and thicker in the middle. This structure enhances the airflow-cutting capabilities of the blades 32 at both ends and reduces air resistance at both ends. The increased thickness in the middle enhances the physical strength of the blades 32. Furthermore, the increased thickness of the blades 32 reduces the space between adjacent blades 32, thereby boosting the pressure of the airflow.

[0454] The second balancing ring portion 34 is positioned between the top surface 311 and the first end portion 321. The multiple balancing grooves 35 of the second balancing ring portion 34 are collectively configured in a truncated cone shape. Because the cross-sectional area of ​​the hub 31 increases from the top surface 311 to the bottom surface 313, the side edges 312 of the hub 31 are configured in an arc shape. The multiple balancing grooves 35 of the second balancing ring portion 34 are collectively configured in a truncated cone shape, which optimizes their distribution, aligns with the changing shape of the sidewall, and improves space utilization.

[0455] The multiple balancing grooves 35 of the first balancing ring portion 33 are arranged in pairs between two adjacent blades 32. The adjacent two balancing grooves 35 of the first balancing ring portion 33 are separated by a first partition plate 331 or a second partition plate 332. Along the circumferential direction of the hub 31, the length of the second partition plate 332 is greater than the length of the first partition plate 331.

[0456] The plurality of balancing grooves 35 of the first balancing ring portion 33 are arranged in pairs between two adjacent blades 32. This design rationally utilizes the space of the fan blades 3, increases the number of balancing grooves 35 that can be arranged on the first balancing ring portion 33, and improves the ability to level the fan blades 3.

[0457] Two adjacent balancing grooves 35 of the first balancing ring portion 33 are separated by a first partition plate 331 or a second partition plate 332. Each independent balancing groove 35 serves as the minimum leveling unit of the first balancing ring portion 33. The balancing grooves 35 are isolated from each other, avoiding mutual interference when filling balancing soil between the balancing grooves 35, thereby improving filling efficiency.

[0458] Along the circumferential direction of the hub 31, the length of the second spacer 332 is greater than that of the first spacer 331. This change in the spacing length causes the leveling capability of the first balancing ring portion 33 to not only add to the unit leveling capability, but also to have a numerical span. This span change, combined with the fine-tuning capability of the second balancing ring portion 34, which complements the numerical span, can quickly achieve leveling.

[0459] In some embodiments, the second partition 332 is connected to the second end 322 of the blade 32. This connection method fully utilizes the space of the fan blade 3, extends the length of the blade 32, and improves the air outlet efficiency of the fan blade 3.

[0460] The fan module housing 1 is provided with a flexible sleeve 5, on which annular protrusions 51 and dot-shaped protrusions 52 are alternately provided. This improves the anti-fall performance of the fan module and, when used in combination, can reduce the noise and vibration of the fan module.

[0461] It should be noted that any implementation in this embodiment can be implemented independently or in combination with one or more other implementations. When implemented in combination, the combination should not be limited to the combination listed in this embodiment.

[0462] Example 2

[0463] A blowing device includes the fan module in Example 1, and the fan module serves as a core module component for assembling the blowing device.

[0464] It should be noted that the blowing device in this embodiment includes (but is not limited to): bladeless fans, desktop fans, floor fans, spherical fans, neck fans, handheld fans, industrial fans, air conditioners, hair dryers, and other products that require air circulation. The fan module in Example 1 is assembled inside the housing of the above products.

[0465] The fan motor 2 and fan blades 3 of the fan module of the blowing device in this embodiment are arranged in the housing 1, and a first balancing ring portion 33 and a second balancing ring portion 34 are provided on the fan blades 3. By filling the corresponding positions of the first balancing ring portion 33 and the second balancing ring portion 34 with balancing soil, the mass distribution of the fan blades 3 is balanced, so that the rotation efficiency and stability of the fan blades 3 are improved. At the same time, the two adjusting ring portions of the first balancing ring portion 33 and the second balancing ring portion 34 can increase the adjustable space of the fan blades 3, thereby achieving the purpose of balancing the mass deviation formed in a larger range of the fan blades 3. The diameter of the first balancing ring portion 33 is larger than the diameter of the second balancing ring portion 34. During the rotation of the fan blades 3, the torque of the first balancing ring portion 33 is greater than the torque of the second balancing ring portion 34. The same mass of balancing soil produces different regulating effects on the first balancing ring portion 33 and the second balancing ring portion 34. Therefore, this structure has different levels of balancing effect on the fan blades 3. The combination of the two can achieve more accurate mass balancing, thereby greatly improving the rotation efficiency and stability of the fan blades 3.

[0466] Scheme 8 is shown in Figures 8-1 to 8-9.

[0467] As shown in Figures 8-1 to 8-4, the portable fan of the present application includes an air outlet portion 100 and a hand-held portion 200. The air outlet portion 100 is used for discharging air, and the hand-held portion 200 is used for being held by a user, so that the user can hold the fan and use it in a mobile manner.

[0468] The air outlet 100 includes an outer shell 1, a casing 2, a first buffer 30 and a cylinder 4 from the outside to the inside. The cylinder 4 takes in air at the rear end and discharges air at the front end. A motor 5 and a fan 6 are provided inside the cylinder 4. The motor 5 is a high-speed three-phase motor. The high-speed three-phase motor can provide sufficient power and rotation speed to ensure the wind force of the portable fan. The first buffer 30 is provided outside the cylinder 4, the casing 2 is provided outside the first buffer 30, and the outer shell 1 is provided outside the casing 2. By providing a four-layer structure of the cylinder 4, the first buffer 30, the casing 2 and the outer shell 1, each layer is fixed and the overall structure is stable. While using a high-speed three-phase motor, the overall shock absorption effect is ensured to be good. The first buffer 30 is provided outside the cylinder 4. The first buffer 30 absorbs and reduces the vibration caused by the high-speed three-phase motor in time, so that the portable fan can rotate continuously and stably at a high speed.

[0469] In one embodiment, as shown in Figures 8-1 to 8-4, the casing 2 is integrally formed and extends from front to back. A stopper 20 is provided on the inner side of the casing 2. The barrel 4 and the first buffer member 30 are inserted into the casing 2 from back to front. The stopper 20 limits the barrel 4 and the first buffer member 30. The outer diameter of the barrel 4 is equal to or greater than the inner diameter of the first buffer member 30, and the outer diameter of the first buffer member 30 is equal to or greater than the inner diameter of the casing 2. The barrel 4, the first buffer member 30, and the casing 2 are tightly fitted, providing a stable structure. The outer shell 1 is integrally formed and extends from front to back. The outer diameter of the casing 2 is smaller than the inner diameter of the casing 1. The inner surface of the casing 1 is provided with multiple ribs at equal intervals, allowing the casing 2 to be easily inserted into the inner side of the casing 1. The multiple ribs can help secure the casing 2. Of course, in other embodiments, the outer surface of the casing 2 can also be provided with multiple ribs at equal intervals.

[0470] As shown in Figures 8-2 and 8-4, the first buffer member 30 serves as an isolation and buffering interface between the barrel 4 and the housing 2. In one embodiment, the first buffer member 30 has a smooth surface. In another embodiment, to enhance its isolation and buffering properties, a plurality of raised points may be spaced apart on the outer surface of the first buffer member. Furthermore, the first buffer member 30 may cover only a portion of the outer surface of the barrel 4, the entire outer surface of the barrel 4, or both the front and rear surfaces of the barrel 4, without limitation.

[0471] In one embodiment, as shown in Figures 8-2, 8-4, and 8-6, the cylinder 4 includes an outer ring portion 40, an inner ring portion 41, and a plurality of first connecting leaves 42 connecting the outer ring portion 40 and the inner ring portion 41. The inner ring portion 41 is shorter than the outer ring portion 40. The inner ring portion 41 is located on the inner side corresponding to the front end portion of the outer ring portion 40, and the front end of the inner ring portion 41 extends forward beyond the front end of the outer ring portion 40. A base plate 44 is provided in the inner ring portion 41, and a hollow shaft barrel 45 protrudes rearward from the base plate 44. The motor 5 includes a stator assembly 51 and a rotor assembly. The stator assembly 51 and the rotor assembly are nested and fixed, and fixed to the shaft barrel 45 from the rear. The fan 6 is installed on the rear side of the rotor assembly. The motor 5 also includes a drive plate 52. The front end of the inner ring portion 41 is provided with a receiving portion 46 and a latch 47. The receiving portion 46 is used to accommodate the drive plate 52, and the latch 47 is used to fasten the drive plate 52. The base plate 44 is provided with a wire opening 440, through which a wire passes to electrically connect the drive plate 52 to the stator assembly 51. The drive plate 52 is electrically connected to the stator assembly 51 and drives the rotor assembly and the fan 6 to rotate.

[0472] In one embodiment, as shown in Figures 8-2, 8-4, 8-7, and 8-8, the rotor assembly includes a rotating shaft 501, a bearing 502, and a stopper 503. The bearing 502, the stopper 503, and the stator assembly 51 are all inserted outside the rotating shaft 501. The shaft barrel 45 extends rearward beyond the rear end of the inner ring portion 41 but does not extend beyond the rear end of the outer ring portion 40. The rotating shaft 501 is inserted into the shaft barrel 45 from back to front. Two bearings 502 are provided: one bearing 502 is secured from back to front outside the rotating shaft 501 and inside the shaft barrel 45, and the other bearing 502 is secured from front to back outside the rotating shaft 501 and inside the shaft barrel 45. The shaft barrel 45 is provided with a second buffer (not shown, the same below) between the two bearings 502. The inner diameter of the shaft barrel 45 corresponding to the second buffer is smaller than the inner diameter of the shaft barrel 45 corresponding to the bearings 502. A slot is provided radially outwardly at the front of the rotating shaft 501, and the stopper 503 is secured to the slot from front to back. A third buffer 31 is provided between the front bearing 502 and the stopper 503. The second and third buffers 31 effectively absorb and reduce vibration between the rotating shaft 501 and the shaft cylinder 45, achieving a good shock absorption effect.

[0473] In one embodiment, as shown in Figures 8-2, 8-4, 8-5, and 8-8, the rotor assembly further includes a housing 504 and a magnetic ring 505. The housing 504 is open toward the front and includes a rear portion and a side portion. The magnetic ring 505 is secured to the inner side of the side portion of the housing 504, and the stator assembly 51 is secured to the inner side of the magnetic ring 505. In the radial direction, the stator assembly 51, the magnetic ring 505, and the side portion of the housing 504 are radially sleeved outside the shaft barrel 45. The front end of the side portion of the housing 504 is axially spaced adjacent to the inner ring portion 41. The spacing between the side portion of the housing 504 and the rear end of the inner ring portion 41 is smaller than the spacing between the rear portion of the housing 504 and the rear bearing 502. This prevents the rear portion of the housing 504 from striking and damaging the rear bearing 502 even if the portable fan is dropped or subjected to other external impacts. The distance between the side of the housing 504 and the rear end of the inner ring portion 41 is smaller than the distance between the front end of the rotating shaft 501 and the rear end of the driving plate 52. In this way, even if the portable fan falls or is hit by other external impacts, the front end of the bearing 502 will not hit and damage the driving plate 52.

[0474] In one embodiment, as shown in Figures 8-2, 8-4, 8-5, and 8-8, the outer diameter of the barrel 4 is 23.71-24.05 mm, and the length of the barrel 4 is 30-33.05 mm. The relatively small volume of the barrel 4 allows the portable fan to be relatively small overall, thereby improving the portability of the portable fan. The barrel 4 also includes a plurality of extension leaves 43, each corresponding to the first connecting leaf 42, extending rearward from the first connecting leaf 42 to form the extension leaves 43. The first connecting leaf 42 extends vertically forward, and the extension leaves 43 extend in an arc-shaped curve. The plurality of extension leaves 43 surround the outside of the side of the housing 504.

[0475] In one embodiment, as shown in Figures 8-3, 8-4, 8-5 and 8-8, the fan 6 is fixed to the rear end of the rotating shaft 501, and the front end of the fan 6 is axially adjacent to the rear end of the housing 504. The fan 6 is coaxially arranged with the motor 5, and the fan 6 and the housing 504 are adjacent to each other. There is no need to provide an additional transmission device between the motor 5 and the fan 6, which effectively improves the transmission efficiency of the fan 6. The fan 6 includes a hub 60 and a plurality of blades 61 provided on the outside of the hub 60. Ribs 62 are provided on the inside of the hub 60. A notch is provided through the rear of the housing 504. The fourth buffer member 32 passes through the notch at the rear of the housing 504 and is provided between the bearing 502 at the rear and the ribs 62 of the fan 6. The rear end of the fourth buffer member 32 abuts against the rib 62 , and the front end of the fourth buffer member 32 abuts against the rear bearing 502 . The fourth buffer member 32 effectively absorbs and reduces the vibration of the fan 6 rotating at high speed, and has a good shock absorption effect.

[0476] In one embodiment, as shown in Figures 8-4, 8-5, and 8-8, a fifth buffer member (not numbered, the same below) is sleeved on the outside of one of the two bearings 502. In another embodiment, the fifth buffer member is sleeved on the outside of both bearings 502, and both are disposed within the shaft barrel 45. In another embodiment, the fifth buffer member is sleeved on the outside of both bearings 502, with the front bearing 502 disposed within the shaft barrel 45 and the rear bearing 502 not disposed within the shaft barrel 45 but directly within the rotor assembly. The fifth buffer member effectively absorbs and reduces vibration caused by the high-speed rotation of the bearing 502, providing a good shock absorption effect.

[0477] In one embodiment, as shown in Figures 8-3 to 8-5, the fan 6 is a diagonal flow fan 6, and the hub 60 radially increases and extends from rear to front, and the hub 60 is arc-shaped. The diameter of the hub 60, the diameter of the housing 504, and the diameter of the inner ring portion 41 differ by less than 0.5 mm. In the axial direction, the housing 504 and the inner ring portion 41 are spaced apart and arranged in close proximity, and the hub 60 and the housing 504 are arranged in close proximity. The rear end of the fan 6 does not extend rearward beyond the rear end of the outer ring portion 40. The fan 6 can be completely contained within the four-layer structure of the outer ring portion 40, the first buffer member 30, the casing 2, and the outer shell 1, effectively absorbing and reducing the noise generated by the high-speed rotation of the fan 6. It should be understood that the passage between the inner ring portion 41 and the outer ring portion 40, and the passage between the side of the housing 504 and the outer ring portion 40 constitute the air duct of the portable fan. The fan 6 rotates, and the high-speed rotating blades 61 generate high-speed turbulence, which first flows through the bent and extended extension blades 43 to be initially combed, and then flows through the first connecting blades 42 extending vertically forward to be combed again, and is guided to be ejected vertically forward to reduce kinetic energy loss and retain large air volume and high wind pressure.

[0478] In one embodiment, as shown in Figures 8-2 to 8-5, the air outlet portion 100 further includes an air inlet cover assembly 7 and an air outlet cover 8. The air inlet cover assembly 7 is fixed to the rear side of the casing 2 and is provided on the rear side of the outer shell 1. The air outlet cover 8 is fixed to the front side of the casing 2 and is provided on the front side of the outer shell 1. A first fixing portion 21 is provided on the front side of the casing 2, and a first matching portion 70 is provided on the outer side of the air outlet cover 8. The first fixing portion 21 and the first matching portion 70 are fixed in a corresponding manner. A second fixing portion 22 is provided on the rear side of the casing 2, and the air inlet cover assembly 7 is provided with a second matching portion 80. The second fixing portion 22 and the second matching portion 80 are fixed in a corresponding manner.

[0479] In one embodiment, as shown in Figures 8-2 to 8-5, the axial length of the shell 1 is 53.6-54 mm, and there is a first distance between the rear end of the air inlet cover assembly 7 and the rear end of the hub 60, and there is a second distance between the front end of the air outlet cover 8 and the front end of the hub 60. The first distance is smaller than the second distance, so that the airflow has sufficient air inlet distance and air outlet distance, so that the guide, rectification and pressurization structures are set in the air inlet distance and the air outlet distance to ensure that the portable fan can increase the air volume, wind pressure and wind efficiency even when the volume is limited.

[0480] In one embodiment, as shown in Figures 8-2, 8-3, 8-4, and 8-9, the air inlet cover assembly 7 includes a rear shell 71, a fairing 72, a latch 73, and a fastener 74. The fastener 74 secures the rear shell 71 and the latch 73. The rear shell 71, the latch 73, and the fairing 72 are all located behind the wheel hub 60. The rear shell 71 is hollow, and a protrusion 710 and a first fixing hole 714 are defined at the front end of the rear shell 71. The fairing 72 has a latch hole 721 at its edge that engages with the protrusion 710, so that the fairing 72 covers the radially inner side of the rear shell 71. A second fixing hole 730 is defined at the rear end of the latch 73. The fastener 74 secures the first fixing hole 714 and the second fixing hole 730. The rear shell 71 and the latch 73 clamp the fairing 72. The fairing 72 includes a plurality of air inlet holes 720 and has a thickness of 0.4 mm. The rear shell 71 includes a planar portion 711, a radial guide portion 712, and an axial guide portion 713, which are radially connected in sequence. The front end of the axial guide portion 713 is provided with a first step, on which the protrusion 710 is projected. The edge of the fairing 72 is provided on the first step, and the locking hole 721 engages with the protrusion 710. The rear end of the locking shell 73 is provided corresponding to the first step to clamp the fairing 72 thereto. The radial guide portion 712 is an arcuate surface that radially decreases from the planar portion 711 to the axial guide portion 713. The minimum inner diameter of the planar portion 711 is larger than the inner diameter of the axial guide portion 713. The inner surface of the axial guide portion 713 extends forward substantially radially unchanged, and the inner surface of the locking shell 73 extends forward substantially radially unchanged. Of course, the inner side surfaces of the axial guide 713 and the housing 73 can also extend forward with a very small radial taper. The airflow is introduced from the arc-shaped radial guide 712. The inner side surfaces of the axial guide 713 and the housing 73 remain radially constant, which reduces the resistance encountered by the airflow and the turbulence generated. This can reduce the noise generated by airflow disturbances and help guide the airflow forward. While the overall volume of the portable fan is limited, the air volume and pressure are increased. The fairing 72, which is thick and has multiple air inlet holes 720, can effectively organize the airflow, allowing the airflow to enter the portable fan more smoothly and more concentratedly.

[0481] In one embodiment, as shown in FIGS. 8-3 to 8-5, the minimum inner diameter of the planar portion 711 is R1, and the distance between the planar portion 711 and the rear end of the hub 60 is D1, where 0.5R < D1 < R1 < 2D1; the inner diameter of the axial flow guiding portion 713 is R2, and the distance between the rear end of the axial flow guiding portion 713 and the rear end of the hub 60 is D2, where 0.5R2 < D2 < R2 < 2D2. Excessive D1 and D2 will affect the layout distribution of the portable fan, while too small D1 and D2 will increase the intake loss of the portable fan and affect the performance of the portable fan. Therefore, by corresponding to the values of R1 and R2 to determine the value ranges of D1 and D2, an excellent intake length can be designed, so that the resistance encountered by the air flow is smaller, the generated turbulence is less, the air volume, air pressure and air efficiency are improved, and the intake noise is reduced.

[0482] In one embodiment, as shown in FIGS. 8-2 to 8-5, the air outlet cover 8 includes an outer cover portion 81, an inner cover portion 82, and a plurality of second connecting blades 83 connecting the outer cover portion 81 and the inner cover portion 82. An air outlet of the portable fan is formed between the outer cover portion 81 and the inner cover portion 82. The second connecting blade 83 and the first connecting blade 42 are axially spaced apart by more than 3.5 mm. It should be understood that both the first connecting blade 42 and the second connecting blade 83 are stationary blades. Using double stationary blades instead of ordinary stationary blades, and there is also a gap between the double stationary blades. When the air flow passes through the double stationary blades, there will be enough buffer space, and part of the air flow will not rebound, which can prevent the generation of turbulent flow and thus reduce noise.

[0483] In one embodiment, as shown in FIGS. 8-2 to 8-5, the front end of the outer cover portion 81 is in front of the front end of the inner cover portion 82. The rear end of the inner cover portion 82 is open and the front end is sealed. A negative pressure surface 820 recessed backward is formed at the front end of the inner cover portion 82. The negative pressure surface 820 has the effects of wind gathering and air supplement, making the wind blown out from the air outlet more concentrated and strong, and the blowing distance farther. The outer side surface of the inner cover portion 82 first extends radially and increases from the rear to the front and then extends radially and decreases. The portion where the outer side surface of the inner cover portion 82 extends radially and increases is longer than the portion where the outer side surface of the inner cover portion 82 extends radially and decreases. The diameter of the front end of the inner cover portion 82 is larger than the diameter of the rear end of the inner cover portion 82. The front end of the inner ring portion 41 is open, and a driving plate 52 is provided at the front end of the inner ring portion 41, which is convenient for installing the driving plate 52 and is beneficial for the wire to connect the driving plate 52. The rear end of the inner cover portion 82 is closely arranged adjacent to the front end of the inner ring portion 41 to shield and protect the driving plate 52, reducing the entry of dust and impurities into the driving plate 52 and affecting normal use.

[0484] In one embodiment, the axial thickness of the air hood 8 is 12.7-12.82 mm, which helps to enhance wind pressure and extend the air discharge distance. The front end of the housing 1 is provided with a second step portion. The front end of the outer cover portion 81 first expands and extends radially forward and outward, then bends and extends backward to wrap around the second step portion, thereby strengthening the fit and fixation between the air hood 8 and the housing 1.

[0485] In one embodiment, as shown in Figures 8-1, 8-2, and 8-4, the housing 1 has an axial length of 53.6-54 mm, at least a portion of the air inlet cover assembly 7 is disposed within the housing 1, and at least a portion of the air outlet cover 8 is disposed within the housing 1. The distance between the rear end of the air inlet cover assembly 7 and the front end of the air outlet cover 8 is 59.6-60 mm. The air outlet portion 100 is compact and portable.

[0486] In one embodiment, as shown in Figures 8-1, 8-2, 8-3, 8-4 and 8-8, a power supply 209 and a control panel 210 are provided in the handheld part 200, and the air outlet part 100 and the handheld part 200 are fixed. The outer shell 1 is provided with a notch 10 corresponding to the handheld part 200, and a first anti-foolproofing block 11 is provided on the inner side of the outer shell 1 in front of the notch 10. The inner cover part 82 and the inner ring part 41 are arranged adjacent to each other in the axial direction, and an anti-foolproofing hole 23 is provided on the front side of the sleeve 2. One of the second connecting leaves 83 is provided with a wire groove 830, and the wire groove 830 radially passes through the inner cover part 82 and the outer cover part 81, and a second anti-foolproofing block 810 is provided on the outer side of the outer cover part 81 corresponding to the wire groove 830. The sleeve 2 is inserted into the outer shell 1 from back to front, and the first anti-foolproof block 11 and the second anti-foolproof block 810 are both matched with the anti-foolproof hole 23. The notch 10, part of the anti-foolproof hole 23 and the wire groove 830 are connected. The wire passes through the notch 10, the anti-foolproof hole 23 and the wire groove 830 to electrically connect the control board 210 and the drive board 52.

[0487] In one embodiment, as shown in Figures 8-1 to 8-4, the housing of the handheld portion 200 includes a left shell 201 and a right shell 202 that cooperate with each other. The air outlet portion 100 also includes a mounting bracket 9 protruding from the outer surface of the housing 1. A connecting bracket 203 is provided within the handheld portion 200. The connecting bracket 203 includes a connecting top plate 204, and a front mounting portion 205, a rear mounting portion 206, a left mounting portion 207, and a right mounting portion 208 extending downward from the four sides of the connecting top plate 204. The connecting top plate 204 is fixedly connected to the mounting bracket 9, the left shell 201 is fixedly connected to the left mounting portion 207, and the right shell 202 is fixedly connected to the right mounting portion 208. The protrusion of the right shell 202 is inserted into the front mounting portion 205 and the rear mounting portion 206. The control board 210 is fixedly mounted on the bottom of the connecting bracket 203. The handheld portion 200 further includes a switch 211 electrically connected to the front side of the control panel 210, an interface 212 electrically connected to the rear side of the control panel 210, and an anti-incorrection touch device 213 electrically connected to the side of the control panel 210. The switch 211 is exposed on the front side of the handheld portion 200, the interface 212 is located on the rear mounting portion 206 and is exposed on the rear side of the handheld portion 200, and the anti-incorrection touch device 213 is exposed on the left or right side of the handheld portion 200. The power supply 209 is located below the control panel 210 and is electrically connected to the control panel 210. The power supply 209 can directly supply power to the motor 5 to drive the fan 6 to rotate without being connected to an external power source.

[0488] In one embodiment, a sixth buffer member (not shown, the same below) is provided on the rear side of the negative pressure surface 820. The sixth buffer member is used to press and connect the drive plate 52 and the control plate 210, and can absorb the noise generated by the operation of the motor 5.

[0489] It should be understood that the first buffer member 31, the second buffer member, the third buffer member 32, the fourth buffer member 33, the fifth buffer member, and the sixth buffer member are all elastic, but the specific material and form can be selected from existing elastic materials. For example, the first buffer member 31 can be a silicone material or a foam material; the second buffer member, the third buffer member 32, the fourth buffer member 33, and the fifth buffer member can be a spring material or a silicone material; and the sixth buffer member can be a silicone material or a foam material. The specific elastic material is not limited to the above examples, and any material that is elastic and can provide a cushioning and shock-absorbing effect can be used.

[0490] Option 9 is shown in Figures 8-1 to 8-9.

[0491] As shown in Figures 8-1 to 8-4, the portable fan of the present application includes an air outlet portion 100 and a hand-held portion 200. The air outlet portion 100 is used for discharging air, and the hand-held portion 200 is used for being held by a user, so that the user can hold the fan and use it in a mobile manner.

[0492] The air outlet 100 includes an outer shell 1, a casing 2, a first buffer 30 and a cylinder 4 from the outside to the inside. The cylinder 4 takes in air at the rear end and discharges air at the front end. A motor 5 and a fan 6 are provided inside the cylinder 4. The motor 5 is a high-speed three-phase motor. The high-speed three-phase motor can provide sufficient power and rotation speed to ensure the wind force of the portable fan. The first buffer 30 is provided outside the cylinder 4, the casing 2 is provided outside the first buffer 30, and the outer shell 1 is provided outside the casing 2. By providing a four-layer structure of the cylinder 4, the first buffer 30, the casing 2 and the outer shell 1, each layer is fixed and the overall structure is stable. While using a high-speed three-phase motor, the overall shock absorption effect is ensured to be good. The first buffer 30 is provided outside the cylinder 4. The first buffer 30 absorbs and reduces the vibration caused by the high-speed three-phase motor in time, so that the portable fan can rotate continuously and stably at a high speed.

[0493] In one embodiment, as shown in Figures 8-1 to 8-4, the casing 2 is integrally formed and extends from front to back. A stopper 20 is provided on the inner side of the casing 2. The barrel 4 and the first buffer member 30 are inserted into the casing 2 from back to front. The stopper 20 limits the barrel 4 and the first buffer member 30. The outer diameter of the barrel 4 is equal to or greater than the inner diameter of the first buffer member 30, and the outer diameter of the first buffer member 30 is equal to or greater than the inner diameter of the casing 2. The barrel 4, the first buffer member 30, and the casing 2 are tightly fitted, providing a stable structure. The outer shell 1 is integrally formed and extends from front to back. The outer diameter of the casing 2 is smaller than the inner diameter of the casing 1. The inner surface of the casing 1 is provided with multiple ribs at equal intervals, allowing the casing 2 to be easily inserted into the inner side of the casing 1. The multiple ribs can help secure the casing 2. Of course, in other embodiments, the outer surface of the casing 2 can also be provided with multiple ribs at equal intervals.

[0494] As shown in Figures 8-2 and 8-4, the first buffer member 30 serves as an isolation and buffering interface between the barrel 4 and the housing 2. In one embodiment, the first buffer member 30 has a smooth surface. In another embodiment, to enhance its isolation and buffering properties, a plurality of raised points may be spaced apart on the outer surface of the first buffer member. Furthermore, the first buffer member 30 may cover only a portion of the outer surface of the barrel 4, the entire outer surface of the barrel 4, or both the front and rear surfaces of the barrel 4, without limitation.

[0495] In one embodiment, as shown in Figures 8-2, 8-4, and 8-6, the cylinder 4 includes an outer ring portion 40, an inner ring portion 41, and a plurality of first connecting leaves 42 connecting the outer ring portion 40 and the inner ring portion 41. The inner ring portion 41 is shorter than the outer ring portion 40. The inner ring portion 41 is located on the inner side corresponding to the front end portion of the outer ring portion 40, and the front end of the inner ring portion 41 extends forward beyond the front end of the outer ring portion 40. A base plate 44 is provided in the inner ring portion 41, and a hollow shaft barrel 45 protrudes rearward from the base plate 44. The motor 5 includes a stator assembly 51 and a rotor assembly. The stator assembly 51 and the rotor assembly are nested and fixed, and fixed to the shaft barrel 45 from the rear. The fan 6 is installed on the rear side of the rotor assembly. The motor 5 also includes a drive plate 52. The front end of the inner ring portion 41 is provided with a receiving portion 46 and a latch 47. The receiving portion 46 is used to accommodate the drive plate 52, and the latch 47 is used to fasten the drive plate 52. The base plate 44 is provided with a wire opening 440, through which a wire passes to electrically connect the drive plate 52 to the stator assembly 51. The drive plate 52 is electrically connected to the stator assembly 51 and drives the rotor assembly and the fan 6 to rotate.

[0496] In one embodiment, as shown in Figures 8-2, 8-4, 8-7, and 8-8, the rotor assembly includes a rotating shaft 501, a bearing 502, and a stopper 503. The bearing 502, the stopper 503, and the stator assembly 51 are all inserted outside the rotating shaft 501. The shaft barrel 45 extends rearward beyond the rear end of the inner ring portion 41 but does not extend beyond the rear end of the outer ring portion 40. The rotating shaft 501 is inserted into the shaft barrel 45 from back to front. Two bearings 502 are provided: one bearing 502 is secured from back to front outside the rotating shaft 501 and inside the shaft barrel 45, and the other bearing 502 is secured from front to back outside the rotating shaft 501 and inside the shaft barrel 45. The shaft barrel 45 is provided with a second buffer (not shown, the same below) between the two bearings 502. The inner diameter of the shaft barrel 45 corresponding to the second buffer is smaller than the inner diameter of the shaft barrel 45 corresponding to the bearings 502. A slot is provided radially outwardly at the front of the rotating shaft 501, and the stopper 503 is secured to the slot from front to back. A third buffer 31 is provided between the front bearing 502 and the stopper 503. The second and third buffers 31 effectively absorb and reduce vibration between the rotating shaft 501 and the shaft cylinder 45, achieving a good shock absorption effect.

[0497] In one embodiment, as shown in Figures 8-2, 8-4, 8-5, and 8-8, the rotor assembly further includes a housing 504 and a magnetic ring 505. The housing 504 is open toward the front and includes a rear portion and a side portion. The magnetic ring 505 is secured to the inner side of the side portion of the housing 504, and the stator assembly 51 is secured to the inner side of the magnetic ring 505. In the radial direction, the stator assembly 51, the magnetic ring 505, and the side portion of the housing 504 are radially sleeved outside the shaft barrel 45. The front end of the side portion of the housing 504 is axially spaced adjacent to the inner ring portion 41. The spacing between the side portion of the housing 504 and the rear end of the inner ring portion 41 is smaller than the spacing between the rear portion of the housing 504 and the rear bearing 502. This prevents the rear portion of the housing 504 from striking and damaging the rear bearing 502 even if the portable fan is dropped or subjected to other external impacts. The distance between the side of the housing 504 and the rear end of the inner ring portion 41 is smaller than the distance between the front end of the rotating shaft 501 and the rear end of the driving plate 52. In this way, even if the portable fan falls or is hit by other external impacts, the front end of the bearing 502 will not hit and damage the driving plate 52.

[0498] In one embodiment, as shown in Figures 8-2, 8-4, 8-5, and 8-8, the outer diameter of the barrel 4 is 23.71-24.05 mm, and the length of the barrel 4 is 30-33.05 mm. The relatively small volume of the barrel 4 allows the portable fan to be relatively small overall, thereby improving the portability of the portable fan. The barrel 4 also includes a plurality of extension leaves 43, each corresponding to the first connecting leaf 42, extending rearward from the first connecting leaf 42 to form the extension leaves 43. The first connecting leaf 42 extends vertically forward, and the extension leaves 43 extend in an arc-shaped curve. The plurality of extension leaves 43 surround the outside of the side of the housing 504.

[0499] In one embodiment, as shown in Figures 8-3, 8-4, 8-5 and 8-8, the fan 6 is fixed to the rear end of the rotating shaft 501, and the front end of the fan 6 is axially adjacent to the rear end of the housing 504. The fan 6 is coaxially arranged with the motor 5, and the fan 6 and the housing 504 are adjacent to each other. There is no need to provide an additional transmission device between the motor 5 and the fan 6, which effectively improves the transmission efficiency of the fan 6. The fan 6 includes a hub 60 and a plurality of blades 61 provided on the outside of the hub 60. Ribs 62 are provided on the inside of the hub 60. A notch is provided through the rear of the housing 504. The fourth buffer member 32 passes through the notch at the rear of the housing 504 and is provided between the bearing 502 at the rear and the ribs 62 of the fan 6. The rear end of the fourth buffer member 32 abuts against the rib 62 , and the front end of the fourth buffer member 32 abuts against the rear bearing 502 . The fourth buffer member 32 effectively absorbs and reduces the vibration of the fan 6 rotating at high speed, and has a good shock absorption effect.

[0500] In one embodiment, as shown in Figures 8-4, 8-5, and 8-8, a fifth buffer member (not numbered, the same below) is sleeved on the outside of one of the two bearings 502. In another embodiment, the fifth buffer member is sleeved on the outside of both bearings 502, and both are disposed within the shaft barrel 45. In another embodiment, the fifth buffer member is sleeved on the outside of both bearings 502, with the front bearing 502 disposed within the shaft barrel 45 and the rear bearing 502 not disposed within the shaft barrel 45 but directly within the rotor assembly. The fifth buffer member effectively absorbs and reduces vibration caused by the high-speed rotation of the bearing 502, providing a good shock absorption effect.

[0501] In one embodiment, as shown in Figures 8-3 to 8-5, the fan 6 is a diagonal flow fan 6, and the hub 60 radially increases and extends from rear to front, and the hub 60 is arc-shaped. The diameter of the hub 60, the diameter of the housing 504, and the diameter of the inner ring portion 41 differ by less than 0.5 mm. In the axial direction, the housing 504 and the inner ring portion 41 are spaced apart and arranged in close proximity, and the hub 60 and the housing 504 are arranged in close proximity. The rear end of the fan 6 does not extend rearward beyond the rear end of the outer ring portion 40. The fan 6 can be completely contained within the four-layer structure of the outer ring portion 40, the first buffer member 30, the casing 2, and the outer shell 1, effectively absorbing and reducing the noise generated by the high-speed rotation of the fan 6. It should be understood that the passage between the inner ring portion 41 and the outer ring portion 40, and the passage between the side of the housing 504 and the outer ring portion 40 constitute the air duct of the portable fan. The fan 6 rotates, and the high-speed rotating blades 61 generate high-speed turbulence, which first flows through the bent and extended extension blades 43 to be initially combed, and then flows through the first connecting blades 42 extending vertically forward to be combed again, and is guided to be ejected vertically forward to reduce kinetic energy loss and retain large air volume and high wind pressure.

[0502] In one embodiment, as shown in Figures 8-2 to 8-5, the air outlet 100 further includes a first deflector 7 and a second deflector 8. The first deflector 7 is fixed to the rear side of the casing 2 and is disposed on the rear side of the outer shell 1. The second deflector 8 is fixed to the front side of the casing 2 and is disposed on the front side of the outer shell 1. A first fixing portion 21 is provided on the front side of the casing 2, and a first matching portion 70 is provided on the outer side of the second deflector 8. The first fixing portion 21 and the first matching portion 70 are fixed in a corresponding manner. A second fixing portion 22 is provided on the rear side of the casing 2, and the first deflector 7 is provided with a second matching portion 80. The second fixing portion 22 and the second matching portion 80 are fixed in a corresponding manner.

[0503] In one embodiment, as shown in Figures 8-2 to 8-5, the axial length of the housing 1 is 53.6-54 mm, a first spacing is provided between the rear end of the first deflector 7 and the rear end of the hub 60, a second spacing is provided between the front end of the second deflector 8 and the front end of the hub 60, and the first spacing is smaller than the second spacing, so that the airflow has sufficient air inlet and outlet distances, and guide, rectify, and pressurize structures are provided in the air inlet and outlet distances to ensure that the portable fan can increase the air volume, wind pressure, and wind efficiency even when the volume is limited.

[0504] In one embodiment, as shown in Figures 8-2, 8-3, 8-4, and 8-9, the first deflector 7 includes a rear shell 71, a fairing 72, a latch 73, and a fastener 74. The fastener 74 secures the rear shell 71 and the latch 73. The rear shell 71, the latch 73, and the fairing 72 are all located behind the wheel hub 60. The rear shell 71 is hollow, and a protrusion 710 and a first fixing hole 714 are defined at the front end of the rear shell 71. The fairing 72 has a latch hole 721 at its edge that engages with the protrusion 710. The fairing 72 covers the radially inner side of the rear shell 71. A second fixing hole 730 is defined at the rear end of the latch 73. The fastener 74 secures the first fixing hole 714 and the second fixing hole 730. The rear shell 71 and the latch 73 clamp the fairing 72. The fairing 72 includes a plurality of air inlet holes 720 and has a thickness of 0.4 mm. The rear shell 71 includes a planar portion 711, a radial guide portion 712, and an axial guide portion 713, which are radially connected in sequence. The front end of the axial guide portion 713 is provided with a first step, on which the protrusion 710 is projected. The edge of the fairing 72 is provided on the first step, and the locking hole 721 engages with the protrusion 710. The rear end of the locking shell 73 is provided corresponding to the first step to clamp the fairing 72 thereto. The radial guide portion 712 is an arcuate surface that radially decreases from the planar portion 711 to the axial guide portion 713. The minimum inner diameter of the planar portion 711 is larger than the inner diameter of the axial guide portion 713. The inner surface of the axial guide portion 713 extends forward substantially radially unchanged, and the inner surface of the locking shell 73 extends forward substantially radially unchanged. Of course, the inner side surfaces of the axial guide 713 and the housing 73 can also extend forward with a very small radial taper. The airflow is introduced from the arc-shaped radial guide 712. The inner side surfaces of the axial guide 713 and the housing 73 remain radially constant, which reduces the resistance encountered by the airflow and the turbulence generated. This can reduce the noise generated by airflow disturbances and help guide the airflow forward. While the overall volume of the portable fan is limited, the air volume and pressure are increased. The fairing 72, which is thick and has multiple air inlet holes 720, can effectively organize the airflow, allowing the airflow to enter the portable fan more smoothly and more concentratedly.

[0505] In one embodiment, as shown in FIGS. 8-3 to 8-5, the minimum inner diameter of the planar portion 711 is R1, and the distance between the planar portion 711 and the rear end of the hub 60 is D1, where 0.5R < D1 < R1 < 2D1; the inner diameter of the axial flow guiding portion 713 is R2, and the distance between the rear end of the axial flow guiding portion 713 and the rear end of the hub 60 is D2, where 0.5R2 < D2 < R2 < 2D2. Excessive D1 and D2 will affect the layout distribution of the portable fan, while too small D1 and D2 will increase the intake loss of the portable fan and affect the performance of the portable fan. Therefore, by corresponding to the values of R1 and R2 to determine the value ranges of D1 and D2, an excellent intake length can be designed, so that the resistance encountered by the air flow is smaller, the generated turbulence is less, the air volume, air pressure and air efficiency are improved, and the intake noise is reduced.

[0506] In one embodiment, as shown in FIGS. 8-2 to 8-5, the second flow guide 8 includes an outer cover portion 81, an inner cover portion 82, and a plurality of second connecting blades 83 connecting the outer cover portion 81 and the inner cover portion 82. An air outlet of the portable fan is formed between the outer cover portion 81 and the inner cover portion 82. The second connecting blades 83 and the first connecting blades 42 are axially spaced apart by more than 3.5 mm. It should be understood that both the first connecting blades 42 and the second connecting blades 83 are stationary blades. By using double stationary blades instead of ordinary stationary blades and providing a gap between the double stationary blades, there will be sufficient buffer space when the air flow passes through the double stationary blades, and no part of the air flow will rebound, which can prevent the generation of turbulence and thus reduce noise.

[0507] In one embodiment, as shown in FIGS. 8-2 to 8-5, the front end of the outer cover portion 81 is in front of the front end of the inner cover portion 82. The rear end of the inner cover portion 82 is open and the front end is sealed. A negative pressure surface 820 that is recessed backward is formed at the front end of the inner cover portion 82. The negative pressure surface 820 has the effects of concentrating and supplementing the air flow, making the air blown out from the air outlet more concentrated and strong, and the blowing distance farther. The outer side surface of the inner cover portion 82 first extends radially outward and then extends radially inward from the rear to the front, and the portion of the outer side surface of the inner cover portion 82 that extends radially outward is longer than the portion of the outer side surface of the inner cover portion 82 that extends radially inward. The diameter of the front end of the inner cover portion 82 is larger than the diameter of the rear end of the inner cover portion 82. The front end of the inner ring portion 41 is open, and a driving plate 52 is provided at the front end of the inner ring portion 41, which is convenient for installing the driving plate 52 and is beneficial for the wire to connect the driving plate 52. The rear end of the inner cover portion 82 is disposed adjacent to the front end of the inner ring portion 41 to shield and protect the driving plate 52 and reduce the entry of dust and impurities into the driving plate 52, affecting normal use.

[0508] In one embodiment, the axial thickness of the second deflector 8 is 12.7-12.82 mm, which helps enhance wind pressure and extend the airflow distance. A second step portion is provided at the front end of the housing 1. The front end of the outer cover 81 first expands radially forward and outward, then bends and extends backward to wrap around the second step portion, strengthening the fit and fixation between the second deflector 8 and the housing 1.

[0509] In one embodiment, as shown in Figures 8-1, 8-2, and 8-4, the housing 1 has an axial length of 53.6-54 mm, at least a portion of the first deflector 7 is disposed within the housing 1, and at least a portion of the second deflector 8 is disposed within the housing 1. The distance between the rear end of the first deflector 7 and the front end of the second deflector 8 is 59.6-60 mm. The air outlet 100 is compact and portable.

[0510] In one embodiment, as shown in Figures 8-1, 8-2, 8-3, 8-4 and 8-8, a power supply 209 and a control panel 210 are provided in the handheld part 200, and the air outlet part 100 and the handheld part 200 are fixed. The outer shell 1 is provided with a notch 10 corresponding to the handheld part 200, and a first anti-foolproofing block 11 is provided on the inner side of the outer shell 1 in front of the notch 10. The inner cover part 82 and the inner ring part 41 are arranged adjacent to each other in the axial direction, and an anti-foolproofing hole 23 is provided on the front side of the sleeve 2. One of the second connecting leaves 83 is provided with a wire groove 830, and the wire groove 830 radially passes through the inner cover part 82 and the outer cover part 81, and a second anti-foolproofing block 810 is provided on the outer side of the outer cover part 81 corresponding to the wire groove 830. The sleeve 2 is inserted into the outer shell 1 from back to front, and the first anti-foolproof block 11 and the second anti-foolproof block 810 are both matched with the anti-foolproof hole 23. The notch 10, part of the anti-foolproof hole 23 and the wire groove 830 are connected. The wire passes through the notch 10, the anti-foolproof hole 23 and the wire groove 830 to electrically connect the control board 210 and the drive board 52.

[0511] In one embodiment, as shown in Figures 8-1 to 8-4, the housing of the handheld portion 200 includes a left shell 201 and a right shell 202 that cooperate with each other. The air outlet portion 100 also includes a mounting bracket 9 protruding from the outer surface of the housing 1. A connecting bracket 203 is provided within the handheld portion 200. The connecting bracket 203 includes a connecting top plate 204, and a front mounting portion 205, a rear mounting portion 206, a left mounting portion 207, and a right mounting portion 208 extending downward from the four sides of the connecting top plate 204. The connecting top plate 204 is fixedly connected to the mounting bracket 9, the left shell 201 is fixedly connected to the left mounting portion 207, and the right shell 202 is fixedly connected to the right mounting portion 208. The protrusion of the right shell 202 is inserted into the front mounting portion 205 and the rear mounting portion 206. The control board 210 is fixedly mounted on the bottom of the connecting bracket 203. The handheld portion 200 further includes a switch 211 electrically connected to the front side of the control panel 210, an interface 212 electrically connected to the rear side of the control panel 210, and an anti-incorrection touch device 213 electrically connected to the side of the control panel 210. The switch 211 is exposed on the front side of the handheld portion 200, the interface 212 is located on the rear mounting portion 206 and is exposed on the rear side of the handheld portion 200, and the anti-incorrection touch device 213 is exposed on the left or right side of the handheld portion 200. The power supply 209 is located below the control panel 210 and is electrically connected to the control panel 210. The power supply 209 can directly supply power to the motor 5 to drive the fan 6 to rotate without being connected to an external power source.

[0512] In one embodiment, a sixth buffer member (not shown, the same below) is provided on the rear side of the negative pressure surface 820. The sixth buffer member is used to press and connect the drive plate 52 and the control plate 210, and can absorb the noise generated by the operation of the motor 5.

[0513] It should be understood that the first buffer member 31, the second buffer member, the third buffer member 32, the fourth buffer member 33, the fifth buffer member, and the sixth buffer member are all elastic, but the specific material and form can be selected from existing elastic materials. For example, the first buffer member 31 can be a silicone material or a foam material; the second buffer member, the third buffer member 32, the fourth buffer member 33, and the fifth buffer member can be a spring material or a silicone material; and the sixth buffer member can be a silicone material or a foam material. The specific elastic material is not limited to the above examples, and any material that is elastic and can provide a cushioning and shock-absorbing effect can be used.

[0514] Scheme 10 is shown in Figures 9-1 to 9-7.

[0515] A buffer component of a fan module provided in an embodiment of the present invention is shown in Figures 9-1 to 9-7. Figure 9-1 is a structural schematic diagram of a buffer component 1 of a fan module provided in an embodiment of the present invention, Figure 9-2 is a structural schematic diagram of a buffer component body 11 in a buffer component of a fan module provided in an embodiment of the present invention, Figure 9-3 is a structural schematic diagram of a limit component 123 in a buffer component of a fan module provided in an embodiment of the present invention, Figure 9-4 is a structural schematic diagram of an auxiliary buffer component 12 in a buffer component of a fan module provided in an embodiment of the present invention, Figure 9-5 is a structural schematic diagram of a fan module 2 provided in an embodiment of the present invention, Figure 9-6 is a structural schematic diagram of a handheld fan provided in an embodiment of the present invention, and Figure 9-7 is a cross-sectional structural schematic diagram along the AA direction in Figure 9-6. A buffer component of a fan module provided by an embodiment of the present invention includes a buffer component body 11 and an auxiliary buffer component 12. The buffer component body 11 is sleeved on the outside of the fan module 2, and the auxiliary buffer component 12 is arranged on the buffer component body 11. The fan module 2 is located inside the buffer component body 11, and the auxiliary buffer component 12 is located outside the buffer component body 11. The auxiliary buffer component 12 is used to be close to the support shell 3, and the auxiliary buffer component 12 protrudes from the buffer component body 11 in the direction close to the support shell 3.

[0516] The interior of the buffer body 11 has a space for accommodating the fan module 2 , and the exterior of the buffer body 11 has a space for accommodating the auxiliary buffer 12 .

[0517] The auxiliary buffer 12 and the buffer body 11 may be made of elastic materials such as silicone.

[0518] In this embodiment, the buffer body 11 is positioned outside the fan module, and the auxiliary buffer 12 is disposed on the buffer body 11. Thus, during operation of the fan module 2, the auxiliary buffer 12, located on the buffer body 11, which is mounted outside the fan module 2, provides vibration damping and cushioning. This dampens the vibrations generated by the fan module 2 during operation, thereby improving operational stability and reducing noise. This achieves the technical effect of simultaneously reducing vibration and noise, thereby improving operational stability.

[0519] As one embodiment, referring to Figures 9-1 to 4 , the auxiliary buffer 12 includes at least a plurality of first protrusion groups 121 distributed along the circumferential direction on the exterior of the buffer body 11. The plurality of first protrusion groups 121 are disposed in the middle section 111 of the buffer body 11. The middle section 111 refers to the region between the two ends of the buffer body 11, which has space for accommodating the plurality of first protrusion groups 121. The circumferential distribution of the plurality of first protrusion groups 121 along the buffer body 11 means that, as shown in Figure 9-7 , each first protrusion group 121 on the buffer body 11 is distributed from left to right, and each first protrusion group 121 is circular in shape identical to the outer circumference of the buffer body 11. The multiple groups of first protrusion groups 121 may include 1 group of first protrusion groups 121, 2 groups of first protrusion groups 121, 3 groups of first protrusion groups 121, 4 groups of first protrusion groups 121, etc. The multiple groups of first protrusion groups 121 are distributed at equal intervals along the circumference of the buffer body 11 on the outside of the buffer body 11, that is, the distance between each two connected groups of first protrusion groups 121 on the outside of the buffer body 11 is equal. By arranging multiple groups of first protrusion groups 121 in the middle section 111 of the buffer body 11, the multiple groups of first protrusion groups 121 can effectively buffer the vibration generated in the middle section 111 of the buffer body 11 when the fan module 2 is running.

[0520] In one embodiment, the first protrusion group 121 includes a plurality of protrusions 1211, which are evenly spaced and truncated in a cone shape. The plurality of protrusions 1211 may include one protrusion 1211, two protrusions 1211, three protrusions 1211, four protrusions 1211, and so on. The plurality of protrusions 1211 may be arranged in a ring shape on the exterior of the buffer body 11. The protrusions 1211 are truncated in a cone shape and contact the inner wall of the support shell 3, thereby achieving shock absorption and buffering.

[0521] In some embodiments, the auxiliary buffer 12 further includes two groups of second protrusion groups 122, one group of second protrusion groups 122 is arranged at one end of the buffer body 11, and the other group of second protrusion groups 122 is arranged at the other end of the buffer body 11, and multiple groups of the above-mentioned first protrusion groups 121 are located between the two groups of second protrusion groups 122, that is, the two groups of second protrusion groups 122 are respectively located at the openings at both ends of the buffer body 11. Both groups of second protrusion groups 122 are distributed along the circumference of the buffer body 11, that is, the second protrusion groups 122 are annular. By respectively arranging the second protrusion groups 122 at both ends of the buffer body 11, the second protrusion groups 122 can effectively buffer the vibration generated by the fan module 2 at both ends of the buffer body 11 when the fan module 2 is in operation.

[0522] In one embodiment, the second protrusion group 122 includes a plurality of bosses 1221, which are evenly spaced and tapered. The plurality of bosses 1221 may include one, two, three, or four bosses 1221. The cross-section of the bosses 1221 gradually decreases in a direction away from the buffer body 11. When the bosses 1221 contact the inner wall of the support shell 3, shock absorption and buffering are achieved through the plurality of bosses 1221.

[0523] In some embodiments, the length of the second protrusion group 122 in the radial direction along the buffer body 11 is equal to the length of the first protrusion group 121 in the radial direction along the buffer body 11. At this time, the height of each protrusion 1211 in the first protrusion group 121 is the same, the height of each boss 1221 in the second protrusion group 122 is the same, and the height of the boss 1221 is the same as the height of the protrusion 1211. That is, assuming that in the radial direction of the buffer body 11, the length of the boss 1221 is H1, and the length of the protrusion 1211 is H2, then H1=H2. At this time, the protrusion 1211 and the boss 1221 are in contact with the inner wall of the support shell 3. When the fan module 2 generates vibration during operation and pushes the protrusion 1211 and the boss 1221 close to the inner wall of the support shell 3, the protrusion 1211 and the boss 1221 are constrained by the inner wall of the support shell 3. The deformation degree of the protrusion 1211 and the boss 1221 is the same, and a better shock-absorbing and buffering effect will be achieved.

[0524] As an embodiment, please refer to Figure 9-3, the buffer 1 also includes two limit members 123, the two limit members 123 are arranged inside the buffer body 11, and the two limit members 123 are respectively located at the two ends of the fan module 2, that is, the two limit members 123 limit the fan module 2 from both ends of the fan module 2, so that when the fan module 2 is running, the buffer body 11 is firmly mounted on the fan module 2 to avoid horizontal displacement of the buffer body 11 mounted on the fan module 2.

[0525] As an implementation mode, the embodiment of the present invention further provides a fan module, which includes the above-mentioned buffer member, and also includes an air guide member 4 and an air inlet bracket 5, and the buffer member body 11 is located between the air guide member 4 and the air inlet bracket 5.

[0526] In this embodiment, the buffer body 11 is disposed between the air guide 4 and the air inlet bracket 5. During the shock absorption and cushioning provided by the auxiliary buffer 12 disposed on the buffer body 11, air moves from the air inlet bracket 5 toward the air guide 4. The air guide 4 and the air inlet bracket 5 clamp the buffer body 11 from both sides. This dampens vibrations generated during operation, reduces noise, and improves operational stability.

[0527] In some embodiments, the projection of the buffer body 11 onto the air guide 4 along the length of the buffer body 11 is located on the air guide 4, and the air guide 4 and one end of the buffer body 11 abut against each other. The projection of the buffer body 11 onto the air inlet bracket 5 along the length of the buffer body 11 is located on the air inlet bracket 5, and the air inlet bracket 5 and one end of the buffer body 11 abut against each other. By clamping the ends of the buffer body 11 by the air inlet bracket 5 and the air guide 4, large displacement of the buffer body 11 can be prevented.

[0528] In some embodiments, as shown in Figures 9-5 to 9-7 , at least a portion of the air guide 4 extends into the interior of the support shell 3, and at least a portion of the air inlet bracket 5 extends into the interior of the support shell 3. That is, one end of the support shell 3 is sleeved over a portion of the air guide 4, and the other end of the support shell 3 is sleeved over a portion of the air inlet bracket 5, with the air guide 4 and the air inlet bracket 5 being respectively limited by the two ends of the support shell 3.

[0529] As an embodiment, the embodiment of the present invention also provides a handheld fan, which includes the above-mentioned fan module and a handheld part 6. A mounting port 31 is provided on the above-mentioned support shell 3, and the mounting port 31 can be located at the bottom of the support shell 3. The handheld part 6 is used for the user to hold. One end of the connecting bracket 61 in the handheld part 6 extends into the interior of the mounting port 31, and the connecting bracket 61 extending into the interior of the mounting port 31 is tightly attached to the above-mentioned auxiliary buffer 12. One end of the connecting bracket 61 extending into the mounting port 31 can be curved to match the buffer body 11, so that this part of the connecting bracket 61 is in close contact with the auxiliary buffer 12.

[0530] In this embodiment, one end of a connecting bracket 61 in the handle 6 extends into the mounting opening 31 in the support shell 3, while the other end of the connecting bracket 61 abuts against the auxiliary buffer 12. When the user grasps the handle 6, the connecting bracket 61 provides support for the buffer body 11 and the auxiliary buffer 12. Vibrations of the buffer body 11 and the auxiliary buffer 12 are transmitted to the handle 6 via the connecting bracket 61, thereby dampening vibrations generated by the fan module during operation, improving operational stability and reducing noise.

[0531] Scheme 11 is shown in Figures 10-1 to 10-8.

[0532] Please refer to Figures 10-1 and 2. Figure 10-1 is a schematic diagram of the overall structure of the portable fan of this embodiment; Figure 10-2 is a schematic diagram of the position structure of the handle and fan assembly of this embodiment.

[0533] As shown in Figures 10-1 and 10-2, a portable fan includes: a holding portion 1; a blowing portion 2, which is connected to one end of the holding portion 1 and is provided with an air inlet 21 and an air outlet 22; a fan assembly 3, which is arranged in the blowing portion 2 and is used to push the air flow from the air inlet 21 to the air outlet 22; the holding portion 1 is distributed with a first end 11 along the direction from the air inlet 21 to the air outlet 22, and a second end 12 opposite to the first end 11, and the fan assembly 3 is arranged in a space defined by extension lines L1 and L2 of the first end 11 and the second end 12 toward the blowing portion 2.

[0534] In this embodiment, the grip portion 1 is constructed as a cuboid, and the side edges of the grip portion 1 are smoothly rounded at the joints. However, the overall structure of the grip portion 1 is not limited to this. Depending on the specific application scenario, in some embodiments, the grip portion 1 can be constructed as a cylinder, a polygonal prism, a cube, a cartoon figure, or other shapes (including but not limited to).

[0535] In this embodiment, the blowing portion 2 is configured in a cylindrical shape. However, the configuration of the blowing portion 2 is not limited thereto. Depending on the specific application scenario, in some embodiments, the blowing portion 2 can be configured in (but not limited to) a prism, barrel, polygon, or racetrack shape.

[0536] Please refer to FIG10-3, which is a schematic structural diagram of the fan assembly of this embodiment.

[0537] As shown in FIG10-3 , the fan assembly 3 in this embodiment includes: fan blades 32 and a fan motor 31. A connecting ring is provided inside the blowing portion 2 for fixing the fan assembly 3. The fan blades 32 and the fan motor 31 are integrated in a spatial structure reuse manner. However, the structure of the fan blades 32 and the fan motor 31 is not limited to this. In some embodiments, the fan blades 32 and the fan motor 31 can be a split structure, that is, the fan blades 32 and the fan motor 31 are connected only by a rotating shaft.

[0538] In some embodiments, the fan assembly 3 further includes a fan housing 33, within which the fan blades 32 and the fan motor 31 are disposed. The fan housing 33 encapsulates the fan blades 32 and the fan motor 31 into a standardized assembly. In this embodiment, the length of the fan assembly 3 refers to the height of the cylindrical structure of the fan housing 33, or the distance from the top of the fan blades 32 to the rear end of the fan motor 31.

[0539] In some embodiments, the fan assembly 3 further includes a flexible protective cover 34, which is mounted over the fan housing 33 and serves to stabilize the connection between the fan assembly 3 and the blowing unit 2. The flexible protective cover 34 also provides a cushioning effect, reducing vibration and noise of the portable fan. In this embodiment, the length of the fan assembly 3 refers to the height of the cylindrical structure of the flexible protective cover 34.

[0540] In some embodiments, the surface of the flexible protective cover 34 is provided with dot-shaped protrusions 341 or annular protrusions (not shown). In some embodiments, the dot-shaped protrusions 341 and the annular protrusions are arranged alternately. The dot-shaped protrusions 341 and / or the annular protrusions can enhance the cushioning capacity of the flexible protective cover 34, further reducing vibration and noise of the portable fan, while also facilitating assembly of the fan assembly 3 into the blowing unit 2.

[0541] In this embodiment, the first end 11 and the second end 12 actually represent the length of the three attribute parameters of the handle 1. Structurally, the overall length of the fan assembly 3 is no greater than the length of the handle 1; positionally, the fan assembly 3 is positioned within the range defined by the vertical extension of the first end 11 and the second end 12.

[0542] In the above embodiment, the fan assembly 3 of the portable fan is arranged in the blowing part 2, and the fan assembly 3 is limited to be placed in the space of the extension line member of the first end 11 and the second end 12 of the holding part 1. That is, the length of the fan assembly 3 in the blowing direction is limited to be no greater than the length of the holding part 1 in the blowing direction. This construction method can keep the center of gravity of the fan assembly 3 and the holding part 1 consistent, so that the portable fan has greater stability when placed. Secondly, the portable fan will generate a recoil force during the blowing process. When the center of gravity of the fan assembly 3 and the holding part 1 are inconsistent, the portable fan will turn under the action of the recoil force. Therefore, the relative position relationship between the fan assembly 3 and the holding part 1 in this embodiment can also prevent the portable fan from deflecting when blowing.

[0543] Again, when the speed of the fan assembly 3 is high, for example, when the fan motor 31 of the fan assembly 3 is a three-phase motor, the high speed will generate high-frequency vibrations, which will in turn cause the entire portable fan to vibrate, and in certain scenarios may even cause the portable fan to resonate. In this embodiment, the fan assembly 3 is confined between the first end and the second end of the gripping portion 1, so that the high-frequency vibrations generated by the fan assembly 3 cannot be directly transmitted to the gripping portion 1, but are instead transmitted from the fan assembly 3 to the blowing portion 2, and then from the blowing portion 2 to the gripping portion 1. The vibration wave will attenuate during this transmission process, greatly reducing the amplitude and energy of the vibration of the gripping portion 1. When the energy attenuation is large, the conditions for resonance will be broken, the resonance risk of the portable fan will be reduced, and the comfort of use of the portable fan will be improved. The use of a three-phase motor can make the speed of the fan motor 31 higher, the amount of air blown out larger, and the cooling effect more obvious.

[0544] However, the type of motor used by the fan motor 31 is not limited to a three-phase motor. In some embodiments, the fan motor 31 can also use a two-phase motor.

[0545] Please refer to FIG10-4, which is a schematic diagram of the overall structure of the portable fan of this embodiment.

[0546] As shown in FIG10-4 , in some embodiments, the blowing portion 2 includes: a connecting tube 23 having a smooth outer surface, the connecting tube 23 being connected to one end of the holding portion 1 , and the fan assembly 3 being disposed in the connecting tube 23 .

[0547] When the fan assembly 3 is in operation, the air near the connecting tube 23 will flow toward the air inlet 21 as negative pressure is formed at the air inlet 21. The smooth outer surface of the connecting tube 23 allows for smoother air flow and prevents the formation of vortices during the flow process, which would affect the air intake of the portable fan. Therefore, the blowing efficiency of the portable fan can be improved.

[0548] The fan assembly 3 is fixed in the connecting tube 23. For example, the fan assembly 3 is fixed by a connecting ring provided in a hollow portion of the connecting tube 23, or the fan assembly 3 is fixed by a connecting rod provided inside the fan assembly 3.

[0549] The connecting tube 23 can be directly connected to the holding portion 1 by means of (but not limited to): screws, gluing, clamping, welding or riveting.

[0550] In some embodiments, the connection between the connecting tube 23 and the grip portion 1 is achieved through a connector 15. One end of the connector 15 is connected to the grip portion 1, and the other end of the connector 15 is connected to the connecting tube 23. The connection between the connecting tube 23 and the connector 15 may be achieved by (but not limited to) screws, adhesive bonding, clamping, welding, or riveting. Whether the connecting tube 23 is directly connected to the grip portion 1 or connected through the connector 15, both connections constitute a connection between the connecting tube 23 and the grip portion 1.

[0551] In some embodiments, along the direction from the air inlet 21 to the air outlet 22, the ratio of the distance from the first end 11 to the second end 12 to the length of the fan assembly 3 is: 1.05-1.35. Within this ratio value, the overall shape and blowing efficiency of the portable fan are optimized. When the ratio of the two is greater than 1.35, the ratio of the fan assembly 3 to the holding portion 1 begins to gradually become unbalanced, and the wind-driving ability of the overly small fan assembly 3 decreases. When the ratio of the two is less than 1.05, the ratio of the fan assembly 3 to the holding portion 1 gradually becomes unbalanced. Since the mass distribution of the fan assembly 3 itself is uneven, when the fan assembly 3 gradually becomes larger, its center of gravity distribution will shift, resulting in insufficient stability of the portable fan. An overly large fan assembly 3 will also cause the entire portable fan to become "top-heavy" and lose its balance ability.

[0552] In some embodiments, a counterweight is provided within the handle 1 to stabilize the portable fan when placed. Typically, the counterweight is provided by a battery 14, but the object is not limited thereto. Depending on the specific application scenario, in some embodiments, a counterweight made of a metal such as lead, copper, or iron, or a compound or mixture of such metals, can be used. The combination of the counterweight and the battery 14 can also serve as the counterweight for the handle 1.

[0553] The provision of the counterweight can further enhance the placement stability of the grip portion 1 and lower the center of gravity of the portable fan, making it less likely to fall over.

[0554] The blowing portion 2 is arranged from the first end 11 to the second end 12, and the length of the blowing portion 2 is greater than the distance from the first end 11 to the second end 12. The fan assembly 3 is arranged in the blowing portion 2, and the length of the blowing portion 2 is greater than the distance from the first end 11 to the second end 12, that is, the length of the blowing portion 2 is greater than the length of the holding portion 1. When the length of the blowing portion 2 is greater than the length of the holding portion 1, the airflow has a certain beam space when entering the blowing portion 2 and when flowing out of the blowing portion 2, which can mix the airflow entering the fan assembly 3 and make it have a uniform flow direction and flow rate; similarly, the airflow flowing out of the blowing portion 2 can also be mixed to make it have a uniform flow direction and flow rate, thereby improving the overall blowing efficiency of the portable fan.

[0555] Furthermore, when the fan assembly 3 is operating, a negative pressure zone forms around the air inlet 21, and a positive pressure zone forms around the air outlet 22. The negative pressure zone at the air inlet 21 causes the surrounding airflow to converge toward the air inlet 21. If the blowing portion 2 is too short, such that the air inlet 21 is flush with or within the grip 1, the grip 1 itself will become an obstruction to the flow of surrounding airflow, causing turbulence or vortices in the flowing air and reducing air intake efficiency. However, when the blowing portion 2 is longer than the grip 1, a gap is created between the air inlet 21 and the grip 1, and the grip 1 no longer obstructs the flow of surrounding air toward the air inlet 21, significantly improving the air intake efficiency of the portable fan. The positive pressure wind zone formed by the air outlet 22 causes the airflow around the air outlet 22 to flow in all directions. If the blowing section 2 is too short, so that the air outlet 22 is flush with or inside the handle 1, the airflow from the air outlet 22 will flow along the handle 1 due to the wall effect, reducing the air outlet efficiency. Alternatively, the airflow from the air outlet 22 may collide with the handle 1 and generate a cyclone, which also reduces the air outlet efficiency. However, when the blowing section 2 is longer than the handle 1, there is a gap between the air outlet 22 and the handle 1, which can prevent the airflow from colliding with the handle 1 or generating the wall effect, greatly improving the air outlet efficiency of the portable fan.

[0556] In some embodiments, the ratio of the length of the blowing portion 2 to the distance from the first end 11 to the second end 12 is: 1.1-1.5. Within this ratio, the air intake and air outlet efficiency of the portable fan reaches the optimal level. When the ratio of the two is greater than 1.5, the proportions of the blowing portion 2 and the holding portion 1 are out of balance. The excessively long air outlet makes the distance from the air inlet 21 to the fan assembly 3 too long, and the air intake mixed flow space is too large. The excessively long air outlet increases the contact area between the airflow and the inner wall space of the blowing portion 2, resulting in large air intake noise. The excessively long air outlet also makes the distance from the fan assembly 3 to the air outlet 22 too long, which also leads to large air outlet noise and low air outlet efficiency. When the ratio of the two is less than 1.1, the excessively short air outlet makes the distance from the air inlet 21 to the fan assembly 3 too short, and the airflow entering therein cannot be well beamed, causing more turbulence in the airflow entering the fan blades 32, affecting the efficiency of the fan blades 32. An excessively short air outlet portion causes the distance between the air outlet 22 and the fan assembly 3 to be too short, thereby causing the airflow blown out of the air outlet 22 to be too dispersed and poorly directional.

[0557] The distance between the first end 11 and the second end 12 is greater than the thickness of the grip 1 in the direction perpendicular to the first end 11 and the second end 12. In other words, from the perspective of "length, width, and height," the grip 1 is longer than its width. This design, combined with the barrel-shaped blower 2, creates a more harmonious overall appearance for the portable fan.

[0558] Please refer to FIG10-5, which is an exploded schematic diagram of the assembly tube and the fan assembly of this embodiment.

[0559] As shown in FIG10-5 , in some embodiments, the blowing unit 2 further includes an assembly cylinder 24, which is disposed in the connecting cylinder 23, and the fan assembly 3 is disposed in the connecting cylinder 23. The assembly cylinder 24 is disposed in the connecting cylinder 23, and the assembly cylinder 24 is connected to the fan assembly 3.

[0560] In some embodiments, the assembly tube 24 and the connecting tube 23 are made of different materials. For example, the connecting tube 23 is made of metal, while the assembly tube 24 is made of plastic. The material of the assembly tube 24 is more plastic. Therefore, manufacturing the assembly tube 24 and the connecting tube 23 separately can greatly improve the assembly efficiency and external aesthetics of the portable fan. This ensures that the outer surface of the connecting tube 23 is smooth and easy to grip.

[0561] However, the relationship between the assembly cylinder 24 and the connecting cylinder 23 is not limited to this. Depending on the specific application scenario, the assembly cylinder 24 and the connecting cylinder 23 can be made of the same material through integrated processing and manufacturing technology. In this embodiment, the assembly cylinder 24 and the connecting cylinder 23 should be distinguished based on the function of the overall component, rather than by whether the component is independent.

[0562] Please refer to Figures 10-6 to 10-8. Figure 10-6 is a structural diagram of the assembly cylinder of this embodiment; Figure 10-7 is a structural diagram of the connection cylinder of this embodiment; and Figure 10-8 is a structural diagram of the air inlet ring of this embodiment.

[0563] As shown in Figures 10-6 to 10-8, in some embodiments, the blowing part 2 also includes: an air inlet tube 26 and an air outlet tube 25, the air inlet 21 is opened on the air inlet tube 26, and the air outlet 22 is opened on the air outlet tube 25, and the air inlet tube 26 and the air outlet tube 25 are respectively connected to the two ends of the assembly tube 24 by snap-connection.

[0564] The air inlet tube 26 and the air outlet tube 25 are respectively arranged at both ends of the assembly tube 24, which can clamp the connecting tube 23 to prevent the assembly tube 24 from falling from the connecting tube 23. The air inlet tube 26 and the air outlet tube 25 are fixed by a clamping method, which facilitates the assembly and disassembly of the air inlet tube 26 and the air outlet tube 25.

[0565] The surface of the air inlet duct 26 is raised to form multiple connecting ridges 261a. Two adjacent connecting ridges 261a are connected by a first connecting spring 261b. A first latch 261c is provided on the side of the first connecting spring 261b facing the connecting tube 23. A first latch 241 is provided on the surface of the end of the assembly tube 24 that connects to the air inlet duct 26, which engages with the first latch 261c. The provision of the connecting ridges 261a reduces the overall volume of the air inlet duct 26, requiring less material to manufacture. The space between the two connecting ridges 261a can also be used to position the first latch 261c, allowing the first latch 261c to deform under pressure. This method cleverly utilizes the surface space of the air inlet duct 26, making the connection between the air inlet duct 26 and the assembly tube 24 more ingenious and improving space utilization.

[0566] The surface of the air outlet cylinder 25 facing the connecting cylinder 23 is indented to form a plurality of first slots 251. A plurality of first openings 242 are correspondingly provided on the end of the assembly cylinder 24 facing the air outlet cylinder 25. A second connecting spring 243 is provided in each of the plurality of first openings 242. A second connecting spring 243 is provided on the side facing the fan assembly 3 to cooperate with the first slots 251. Similarly, the connection method between the assembly cylinder 24 and the air outlet cylinder 25 cleverly defines a first opening 242 on the surface of the assembly cylinder 24 and a second connecting spring 243 at the position of the first opening 242. This allows the assembly cylinder 24 to be connected to the air outlet cylinder 25 without providing a protruding structure, rationally utilizing the spatial structure and improving the space utilization rate of the assembly.

[0567] It should be pointed out that the connection method between the air inlet duct 26, the air outlet duct 25 and the assembly tube 24 is not limited to this. Depending on the specific application scenario, the connection method between the air inlet duct 26, the air outlet duct 25 and the assembly tube 24 can be (not limited to): gluing, screw connection, riveting, etc.

[0568] In some embodiments, the assembly cylinder 24 and the air inlet cylinder 26 or the air outlet cylinder 25 can be manufactured using an integrated manufacturing technology.

[0569] In some embodiments, the length of the first inner surface 262b at the end of the air inlet tube 26 facing away from the fan assembly 3 is shorter than the length of the first outer surface 262a, and a smooth transition is formed between the first inner surface 262b and the first outer surface 262a, forming a first curved edge 262c. Specifically, the outward extension of the first inner surface 262b is shorter than the outward extension of the first outer surface 262a. Consequently, a length difference forms between the ends of the first inner surface 262b and the first outer surface 262a. This length difference is connected by the first curved edge 262c, forming a smooth edge at the edge of the air inlet 21 that resembles a "bell mouth." The first curved edge 262c guides the airflow entering the air inlet 21 when air enters. Its smooth lines also prevent the airflow from making abrupt contact with the side edges, thereby improving the air intake efficiency of the portable fan and reducing wind noise.

[0570] In some embodiments, the second inner surface 254 at the end of the air outlet 25 facing away from the fan assembly 3 is shorter than the second outer surface 253, and a smooth transition forms between the second inner surface 254 and the second outer surface 253, forming a second curved edge 255. Specifically, the outward extension of the second inner surface 254 is shorter than the outward extension of the second outer surface 253. Consequently, a length difference forms between the ends of the second inner surface 254 and the second outer surface 253, which is connected by the second curved edge 255, forming a smooth edge resembling a "bell mouth" at the edge of the air outlet 22. The second curved edge 255 guides the outflowing air from the air outlet 22. The curved surface of the second curved edge 255 creates a Coanda effect, rapidly decompressing the high-speed airflow and increasing the airflow area in the blowing direction. The smooth curve of the second curved edge 255 also prevents abrupt contact between the airflow and the side edges, thereby improving the airflow efficiency of the portable fan, increasing the blowing area, and reducing wind noise.

[0571] In some embodiments, the air inlet duct 26 includes a connecting tube 261 and an air inlet ring 262. A plurality of connecting baffles 261a, a first connecting spring piece 261b, and a first latch 261c are provided on the connecting tube 261. The connecting tube 261 and the air inlet ring 262 are detachably connected. The maximum outer diameter of the connecting tube 261 is smaller than the inner diameter of the assembly tube 24, and the maximum outer diameter of the air inlet ring 262 is larger than the outer diameter of the connecting tube 23. The air inlet duct 26 can be disassembled into the connecting tube 261 and the air inlet ring 262. Although the assembly process is increased, the disassembled structure provides more adjustable space for the connection between the assembly tube 24 and the air inlet duct 26, providing greater fault tolerance during assembly.

[0572] In this embodiment, the first inner surface 262 b and the first outer surface 262 a are both provided on the air inlet ring 262 , and the first arcuate edge 262 c is also provided on the air inlet ring 262 .

[0573] Multiple connecting ribs 261a are provided with connecting screw holes 261d. The air inlet ring 262 is provided with threaded posts 262d at positions corresponding to the connecting screw holes 261d. The connecting screw holes 261d and the threaded posts 262d are connected by a first screw. A receiving groove 245 for receiving the first screw, the connecting screw holes 261d, and / or the threaded posts 262d is provided at one end of the assembly tube 24 connected to the air outlet tube 25. The receiving groove 245 can accommodate one or more of the first screw, the connecting screw holes 261d, or the threaded posts 262d. The screw connection allows for adjustment of the connection between the assembly tube 24 and the air inlet tube 26, providing greater fault tolerance during assembly. The connecting screw holes 261d are provided on the connecting rib 261a. Through the rational use of space, two connection methods are provided between the connecting rib 261a and the adjacent connecting rib 261a, thereby improving space utilization efficiency. The provision of the receiving groove 245 can prevent the first screw from protruding from the surface of the assembly tube 24 , thereby facilitating assembly.

[0574] The detachable connection method between the connecting tube 261 and the air inlet ring 262 is not limited thereto. Depending on the specific application scenario, in some embodiments, the connecting tube 261 and the air inlet ring 262 can also be connected by snapping.

[0575] In some embodiments, the connecting tube 261 and the air inlet ring 262 can be manufactured by an integrated molding process.

[0576] The outer diameter of one end of the air outlet tube 25 connected to the assembly tube 24 is smaller than the inner diameter of the assembly tube 24 , and the maximum outer diameter of the end of the air outlet tube 25 facing away from the assembly tube 24 is larger than the outer diameter of the connecting tube 23 .

[0577] The outer diameters of the ends of the air outlet tube 25 and the connecting tube 261 connected to the assembly tube 24 are smaller than the inner diameter of the assembly tube 24, allowing the ends of the air outlet tube 25 and the connecting tube 261 connected to the assembly tube 24 to be inserted into the assembly tube 24. The maximum outer diameter of the end of the air outlet tube 25 facing away from the assembly tube 24 and the air inlet ring 262 are larger than the outer diameter of the connecting tube 23, which can clamp and limit the connection tube 23, preventing the assembly tube 24 and the connecting tube 23 from separating or shifting.

[0578] In some embodiments, a limit stop 246 is provided on the inner wall of the end of the assembly tube 24 where it connects to the air outlet tube 25. A positioning piece 252 is provided on the end of the air outlet tube 25 where it connects to the assembly tube 24. The limit stop 246 has a positioning slot 247 formed at a position corresponding to the positioning slot 252. The positioning piece 252 is provided in the direction in which at least one of the plurality of first slots 251 extends toward the assembly tube 24. The provision of the positioning piece 252 and the positioning slot 247 facilitates the snap-fit ​​assembly of the air outlet tube 25 and the assembly tube 24. Furthermore, the provision of the positioning piece 252 in the direction in which the first slot 251 extends toward the assembly tube 24 further facilitates the assembly of the first slot 251, the second connecting spring piece 243, and the second claw 244.

[0579] In some embodiments, a filter 27 is disposed between the connecting tube 23 and the air inlet ring 262. The filter 27 prevents debris, hair, or clothing from being drawn into the fan assembly 3, providing excellent protection. Placing the filter 27 between the connecting tube 23 and the air inlet ring 262 facilitates installation and replacement.

[0580] In some embodiments, the holding portion 1 includes: a shell 13, a battery 14 and a connector 15, the battery 14 is disposed in the shell 13, one end cover of the connector 15 is disposed at one end of the shell 13, and the other end is connected to the blowing portion 2.

[0581] The connection between the blowing section 2 and the gripping section 1 is achieved through the connector 15, making them independent of each other and facilitating the disassembly and maintenance of either one. Furthermore, since both the blowing section 2 and the gripping section 1 have established functional shapes, their specific shapes make them difficult to connect and secure. Therefore, the connector 15 is used to connect the two. The connector 15 can adaptably deform and dock according to the different shape requirements of the blowing section 2 and the gripping section 1, thereby improving the stability of the connection. For example, the end of the connector 15 connected to the blowing section 2 is provided with an arcuate groove, and the end of the connector 15 connected to the gripping section 1 is constructed to have a shape similar to the outer shape of the gripping section 1.

[0582] In some embodiments, the connector 15 is connected to the blowing unit 2 by screws, and the connector 15 is connected to the housing 13 by snap-fitting. However, the connection method between the connector 15 and the blowing unit 2 is not limited to this. Depending on the specific application scenario, in some embodiments, the connector 15 and the blowing unit 2 can be connected and fixed by (but not limited to) gluing, snap-fitting, riveting, welding, etc. The connector 15 and the housing 13 can be connected and fixed by (but not limited to) interference fit, screw connection, riveting, gluing, welding, etc.

[0583] The portable fan also includes: a first PCB circuit board 41, a second PCB circuit board 42 and a third PCB circuit board 43. The first PCB circuit board 41 is arranged in the housing 13, the second PCB circuit board 42 is arranged on the connecting member 15, and the third PCB circuit board 43 is arranged on the fan assembly 3. The first PCB circuit board 41 and the second PCB circuit board 42 are perpendicular to each other. The first PCB circuit board 41 and the second PCB circuit board 42 are connected by a first conductive member 46, and the second PCB circuit board 42 and the third PCB circuit board 43 are connected by a second conductive member 47. The stiffness of the first conductive member 46 is greater than or equal to the stiffness of the second conductive member 47.

[0584] The first PCB 41, second PCB 42, and third PCB 43 are positioned at different locations on the portable fan. This not only increases the mounting area for the various electronic components of the portable fan, but also effectively avoids the high electromagnetic interference caused by densely packed electronic components, effectively reducing the intensity of electronic interference between different PCBs. Furthermore, the different locations of the PCBs prevent excessive heat generation from the electronic components, thereby improving the heat dissipation efficiency of the portable fan.

[0585] The rigidity of the first conductive member 46 is greater than that of the second conductive member 47 , so that the second PCB circuit board 42 provides greater support for the first PCB circuit board 41 . Combined with the mutually perpendicular structure of the first PCB circuit board 41 and the second PCB circuit board 42 , the second PCB circuit board 42 supports the first PCB circuit board 41 , preventing the first PCB circuit board 41 from being displaced into the housing 13 under the action of external forces.

[0586] The second conductive member 47 has a smaller connection rigidity, which facilitates the installation of the blowing part 2 and the connecting member 15 .

[0587] In some embodiments, the first conductive member 46 is a motor component pin or a welded prismatic iron metal rod, and the second conductive member 47 is a wire, a flat cable, or a flexible circuit board.

[0588] The first PCB 41 is snap-fastened to the inner surface of the housing 13, the second PCB 42 is screwed to the connector 15, and the third PCB 43 is snap-fastened to the fan assembly 3. The snap-fastening connection of the first PCB 41 facilitates assembly and disassembly. The second PCB 42 is screwed to the connector 15. Since the second PCB 42 supports the first PCB 41, the more stable the second PCB 42 is installed, the greater the degree of positioning or support it provides for the first PCB 41. The third PCB 43 is snap-fastened to the fan assembly 3, facilitating assembly and disassembly and serving as a dust cover for the fan assembly 3.

[0589] In some embodiments, a first PCB 41 is connected to a first control button 44, and a second PCB 42 is connected to a second control button 45. The path of motion of the first control button 44 under load is perpendicular to the first PCB 41, while the path of motion of the second control button 45 under load is parallel to the second PCB 42. Because the first PCB 41 is secured by a snap-fit ​​connection and the second PCB 42 supports the first PCB 41, the first PCB 41 has a higher vertical load resistance, making it suitable for mounting the first control button 44, which moves in the vertical direction. The second PCB 42, however, is secured to the connector 15 by screws, resulting in a larger overhang area and weaker vertical load resistance. However, due to the screw fastening, it has greater anti-rotational properties. The path of motion of the second control button 45 under load is parallel to the second PCB 42, effectively resisting steering or deflection forces applied to the second control button 45 during use.

[0590] The term "plurality" in this embodiment refers to a number of two or more.

[0591] It should be noted that any implementation in this embodiment can be implemented independently or in combination with one or more other implementations. When implemented in combination, the combination should not be limited to the combination listed in this embodiment.

[0592] Scheme 12 is shown in Figures 11-1 to 11-5.

[0593] In one embodiment, as shown in Figures 11-1 to 11-3 , the high-speed motor of the present application is used in a portable fan. The portable fan includes an air outlet 100 for discharging air and a handheld portion 200 for being held by a user for convenient handheld use.

[0594] In one embodiment, as shown in Figures 11-2 and 11-3 , the air outlet 100 comprises, from the outside inward, a housing 1, a casing 2, a buffer 30, and the high-speed motor. The high-speed motor comprises a barrel 4, a drive plate 55, a stator assembly 54, a rotor assembly, and blades 6. The high-speed motor can provide sufficient power and speed to ensure the wind force of the portable fan.

[0595] The buffer member 30 is disposed outside the barrel 4, the casing 2 is disposed outside the buffer member 30, and the outer shell 1 is disposed outside the casing 2. By providing a four-layer structure comprising the barrel 4, the buffer member 30, the casing 2, and the outer shell 1, each layer is secured and the overall structure is stable. While using the high-speed motor, the buffer member 30 is disposed outside the barrel 4 to ensure an effective overall vibration reduction effect. The buffer member 30 promptly absorbs and reduces vibration caused by the high-speed motor, allowing the portable fan to maintain stable high-speed rotation.

[0596] In one embodiment, as shown in Figures 11-2 and 11-3 , the buffer member 30 serves as an isolation and buffering interface between the barrel 4 and the housing 2. In one embodiment, the buffer member 30 has a smooth surface; in another embodiment, to enhance its isolation and buffering properties, a plurality of raised dots may be spaced apart on the outer surface of the buffer member 30. Furthermore, the buffer member 30 may cover only a portion of the outer surface of the barrel 4, the entire outer surface of the barrel 4, or both the front and rear surfaces of the barrel 4, without limitation.

[0597] In one embodiment, as shown in Figures 11-3 and 11-5, the cylindrical body 4 includes an outer ring portion 40, an inner ring portion 41, and a plurality of connecting blades 42 connecting the outer ring portion 40 and the inner ring portion 41. The inner ring portion 41 is shorter than the outer ring portion 40, and the front end of the inner ring portion 41 extends forward beyond the front end of the outer ring portion 40. A base plate 44 is formed within the inner ring portion 41, and a hollow shaft cylinder 45 protrudes rearward from the base plate 44. The shaft cylinder 45 extends rearward beyond the rear end of the inner ring portion 41 but does not extend beyond the rear end of the outer ring portion 40. The stator assembly 54, the rotor assembly, and the shaft cylinder 45 are nested and fixed.

[0598] In one embodiment, as shown in Figures 11-3 and 11-4, a first step 451 is formed on the outer side of the shaft cylinder 45. The stator assembly 54 is disposed outside the shaft cylinder 45 and abuts against the first step 451. The rotor assembly includes a rotating shaft 50, a bearing 51, and a magnetic ring 52. The rotating shaft 50 extends into the shaft cylinder 45. The bearing 51 is disposed outside the rotating shaft 50. A buffer sleeve 31 is disposed outside the bearing 51. The magnetic ring 52 is disposed outside the stator assembly 54. By disposing the buffer sleeve 31 outside the bearing 51, the buffer sleeve 31 can fully absorb the vibration generated by the bearing 51 and the noise generated by the vibration, allowing the high-speed motor to operate continuously and stably.

[0599] In one embodiment, as shown in Figures 11-2, 11-3, and 11-5, the front end of the inner ring portion 41 is provided with a receiving portion 46 and a buckle 47. The receiving portion 46 is used to accommodate the drive plate 55, and the buckle 47 is used to fasten and secure the drive plate 55. The base plate 44 is provided with a wire passage opening, through which a wire passes to electrically connect the drive plate 55 and the stator assembly 54. The drive plate 55 is electrically connected to the stator assembly 54 and drives the rotor assembly to rotate.

[0600] In one embodiment, as shown in Figures 11-3 and 11-4, two bearings 51 are provided, including a first bearing 511 and a second bearing 512. The first bearing 511 and the second bearing 512 are both provided outside the rotating shaft 50. The first bearing 511 is located in front of the second bearing 512, and at least one of the first bearing 511 and the second bearing 512 is provided with the buffer sleeve 31. In this embodiment, the buffer sleeve 31 is provided outside the first bearing 511 and the second bearing 512. Of course, in other embodiments, the buffer sleeve 31 may be provided outside the first bearing 511, and the buffer sleeve 31 may not be provided outside the second bearing 512; or the buffer sleeve 31 may not be provided outside the first bearing 511, and the buffer sleeve 31 may be provided outside the second bearing 512.

[0601] In one embodiment, as shown in Figures 11-3 and 11-4, the buffer sleeve 31 is formed with a groove 313, and the groove 313 is formed on one or more of the radially outer side, radially inner side, axially outer side, and axially inner side of the buffer sleeve 31. In this embodiment, the groove 313 is formed on the radially outer side of the buffer sleeve 31, and the groove 313 is arranged in an annular manner on the buffer sleeve 31. The provision of the groove 313 can provide the buffer sleeve 31 with some space for deformation, thereby making the buffer sleeve 31 more capable of buffering and absorbing. The outer diameter of the buffer sleeve 31 is 5.96 mm (millimeter, the same below), the depth of the groove 313 is 0.1 mm, and the width of the groove 313 is 0.7 mm.

[0602] In one embodiment, the first bearing 511 and the second bearing 512 are both provided with the buffer sleeve 31. The first bearing 511 is provided with the first buffer sleeve 311, while the second bearing 512 is provided with the second buffer sleeve 312. The first bearing 511 and the second bearing 512 each have an inner wall, an outer wall, and balls disposed between the inner and outer walls. The rotating shaft 50 passes through the inner walls of the first and second bearings 511, 512. A second step 452 is formed on the inner side of the shaft cylinder 45. The first bearing 511 and the first buffer sleeve 311 abut against the second step 452 from front to back. The first buffer sleeve 311 covers the radially outer side and rear side of the outer wall of the first bearing 511. The second bearing 512 and the second buffer sleeve 312 abut against the rear end of the shaft cylinder 45 from back to front. The second buffer sleeve 312 covers the radially outer side and front side of the outer wall of the second bearing 512. Part of the stator assembly 54 is disposed outside the second buffer sleeve 312.

[0603] In one embodiment, as shown in Figures 11-3 and 11-4, the rotor assembly further includes a housing 53. The housing 53 is open forward and includes a first sidewall 531, a second sidewall 532, and a rear wall 533. The first sidewall 531 is located radially inward of the second sidewall 532 and is shorter than the second sidewall 532. The rear wall 533 connects the first sidewall 531 and the second sidewall 532. The first sidewall 531 is fixedly mounted outside the rotating shaft 50, and the second sidewall 532 is located outside the magnetic ring 52.

[0604] In one embodiment, as shown in Figures 11-3 and 11-4 , the second sidewall 532 and the inner ring portion 41 are axially adjacent, while the first sidewall 531 and the second bearing 512 are axially adjacent. The distance between the second sidewall 532 and the inner ring portion 41 is smaller than the distance between the first sidewall 531 and the second bearing 512. In this embodiment, the distance between the first sidewall 531 and the second bearing 512 is 0.8 mm, and the distance between the second sidewall 532 and the inner ring portion 41 is 0.7 mm, although this is not limiting.

[0605] In one embodiment, as shown in Figures 11-3 and 11-4, a buffer pad 33 is provided at the front end of the second sidewall 532 and / or the rear end of the inner ring portion 41. In this embodiment, the rear end of the inner ring portion 41 is provided with a buffer pad 33. Multiple buffer pads 33 are provided and distributed along the rear end of the inner ring portion 41. This prevents the front end of the second sidewall 532 from impacting the rear end of the inner ring portion 41, even if the high-speed motor falls or is struck by an external impact. The buffer pad 33 has a thickness of 0.3 mm, which effectively absorbs and reduces impact vibration, but this is not intended to be limiting. It should be understood that the buffer pad 33 can also be provided at the front end of the second sidewall 532, and the buffer pad 33 can be provided in a circle around the front end of the second sidewall 532 and / or the rear end of the inner ring portion 41. Furthermore, the distance between the second sidewall 532 and the inner ring portion 41 is smaller than the distance between the rotating shaft 50 and the drive plate 55. In this way, even if the high-speed motor falls or is hit by other external impacts, the front end of the rotating shaft 50 will not hit and damage the driving plate 55.

[0606] In one embodiment, as shown in Figures 11-3 to 11-5, the outer diameter of the cylinder 4 is 23.71-24.05 mm, and the length of the cylinder 4 is 30-33.05 mm. The volume of the cylinder 4 is relatively small, so that the overall volume of the portable fan can also be relatively small, thereby improving the portability of the portable fan. The cylinder 4 also includes a plurality of extension leaves 43, and the plurality of extension leaves 43 correspond to the plurality of connecting leaves 42 one by one. The extension leaves 43 extend backward from the connecting leaves 42. The connecting leaves 42 extend vertically forward, and the extension leaves 43 extend in an arc-shaped curve. The plurality of extension leaves 43 surround the outside of the second side wall 532.

[0607] In one embodiment, as shown in Figures 11-2 to 11-4, a fan blade 6 is further fixed to the rear end of the rotating shaft 50. The front end of the fan blade 6 is axially adjacent to the rear wall 533 of the housing 53. The fan blade 6 is coaxially arranged with the housing 53, the magnetic ring 52, and the bearing 51, and the fan blade 6 and the housing 53 are arranged in close proximity, eliminating the need for a separate transmission device between the housing 53 and the fan blade 6, thereby effectively improving the transmission efficiency of the fan blade 6. The fan blade 6 includes a hub 60 and a plurality of blades 61 arranged around the outside of the hub 60 at intervals. A shaft column 62 is also provided on the inside of the hub 60. The shaft column 62 is fixed to the outside of the rotating shaft 50, and a plurality of ribs 63 connect the shaft column 62 and the hub 60. The rear wall 533 is penetrated by a notch, and the elastic member 32 passes through the notch of the rear wall 533, and the two ends of the elastic member 32 are respectively abutted against the ribs 63 and the second bearing 512. The diameter of one end of the elastic member 32 abutting the rib 63 is larger than the diameter of the elastic member 32 abutting the second bearing 512 . The maximum outer diameter of the elastic member 32 is 7-7.8 mm, and the minimum inner diameter of the elastic member 32 is 2.05 mm.

[0608] In one embodiment, as shown in Figures 11-2 and 11-3, the fan blade 6 is a diagonal flow fan blade, the hub 60 radially increases and extends from the back to the front, and the hub 60 is arc-shaped. The diameter of the hub 60, the diameter of the housing 53, and the diameter of the inner ring portion 41 differ by less than 0.5 mm, and in the axial direction, the housing 53 and the inner ring portion 41 are arranged adjacent to each other in front and back, and the hub 60 and the housing 53 are arranged in close proximity. The rear end of the fan blade 6 does not extend backward beyond the rear end of the outer ring portion 40, and the fan can be completely arranged in the four-layer structure of the outer ring portion 40, the buffer member 30, the sleeve 2 and the outer shell 1, which can effectively absorb and reduce the noise generated by the high-speed rotation of the fan blade 6. It should be understood that the channel between the inner ring portion 41 and the outer ring portion 40, and the channel between the second side wall 532 and the outer ring portion 40 belong to the air duct of the portable fan. The fan blades 6 rotate, and the high-speed turbulence generated by the high-speed rotating fan blades 6 first flows through the curved extension blades 43 to be initially combed, and then flows through the connecting blades 42 extending vertically forward to be combed again, and is guided to be sprayed vertically forward to reduce kinetic energy loss and retain large air volume and high wind pressure.

[0609] In one embodiment, as shown in Figures 11-1 to 11-3, the air outlet portion 100 further includes an air inlet cover 7 and an air outlet cover 8. The air inlet cover 7 is fixed to the rear side of the casing 2 and is disposed on the rear side of the outer shell 1. The air outlet cover 8 is fixed to the front side of the casing 2 and is disposed on the front side of the outer shell 1.

[0610] In one embodiment, as shown in Figures 11-2 and 11-3, a power supply 201 and a control board 202 are provided in the handheld portion 200, and the air outlet portion 100 and the handheld portion 200 are fixed. The control board 202 is electrically connected to the drive board 55 via a wire. The power supply 201 is provided below the control board 202, and the power supply 201 is electrically connected to the control board 202. The power supply 201 can directly supply power to the high-speed motor to drive the fan blades 6 to rotate without connecting to an external power supply.

[0611] It should be understood that the buffer member 30, the buffer sleeve 31, and the elastic member 32 all have the ability to elastically deform, but the specific material, form, and deformation capacity can be selected from existing elastic materials. For example, the buffer member 30 can be made of silicone or foam, the buffer sleeve 31 can be made of silicone or foam, and the elastic member 32 can be made of spring or silicone. The specific elastic material is not limited to the above examples; any material that has elastic deformation and can provide a cushioning and shock-absorbing effect can be used.

[0612] Scheme 13 is shown in Figures 12-1 to 12-5.

[0613] In one embodiment, as shown in Figures 12-1 and 12-2 , a high-speed motor according to the present application is provided. The high-speed motor comprises a barrel 1, a stator assembly 2, and a rotor assembly. The barrel 1 comprises an outer ring portion 11, an inner ring portion 12, and a plurality of connecting blades 13 connecting the outer ring portion 11 and the inner ring portion 12.

[0614] In one embodiment, as shown in Figures 12-3 to 12-5, a base plate 14 is formed in the inner ring portion 12, and a shaft barrel 15 protrudes and extends backward from the base plate 14. An integrally formed bearing mounting structure is provided in the shaft barrel 15, and the bearing mounting structure includes a first bearing chamber 151 and a second bearing chamber 152. The stator assembly 2, the rotor assembly, and the shaft barrel 15 are nested and fixed. The rotor assembly includes a rotating shaft 31, and a first bearing 32 and a second bearing 33 provided radially outside the rotating shaft 31. The rotating shaft 31 extends into the shaft barrel 15, the first bearing 32 is accommodated in the first bearing chamber 151, and the second bearing 33 is accommodated in the second bearing chamber 152, so as to fix the rotating shaft 31 and the shaft barrel 15.

[0615] In one embodiment, as shown in Figures 12-3 to 12-5, a first step portion 153 is formed on the outer side of the shaft cylinder 15. The stator assembly 2 is disposed outside the shaft cylinder 15 and abuts forward against the first step portion 153. By providing the first step portion 153, the stator assembly 2 is nested and positioned radially outside the shaft cylinder 15.

[0616] In one embodiment, as shown in Figures 12-3 to 12-5 , the bearing mounting structure is integrally formed within the shaft barrel 15. That is, in this embodiment, the first bearing chamber 151 and the second bearing chamber 152 are integrally formed directly from the shaft barrel 15. The axes of the first bearing chamber 151, the second bearing chamber 152, and the shaft barrel 15 coincide, ensuring concentricity between the first bearing 32 and the second bearing 33, as well as between the first bearing 32, the second bearing 33, and the shaft barrel 15. Of course, in other embodiments, the bearing mounting structure can be integrally formed separately and then embedded within the shaft barrel 15, similarly ensuring concentricity between the first bearing 32 and the second bearing 33. The first bearing chamber 151 is located forward of the second bearing chamber 152. A second step 154 ​​is formed at the rear end of the first bearing chamber 151, and a third step 155 is formed at the rear end of the second bearing chamber 152. The steps formed at the rear ends of the bearing chambers limit the rear...

Claims

1. A fan module, wherein: include: An air guide cover, wherein an air inlet is provided on the air guide cover; An air guide duct, wherein the air guide duct is provided with an air outlet corresponding to the air inlet, and one end of the air guide duct facing away from the air outlet is connected to one end of the air guide cover facing away from the air inlet; A fan assembly is connected to the air duct, and at least a portion of the structure of the fan assembly extends out of the air duct and into the air duct cover.

2. The fan module according to claim 1, wherein: The fan assembly comprises: a motor assembly and a fan blade assembly, one end of the motor assembly is connected to the air guide duct, and the fan assembly is sleeved on the motor assembly; The fan blade assembly comprises: a hub, a connecting ring and a plurality of blades, wherein the plurality of blades are arranged around the hub surface along the circumference of the hub, one end of the connecting ring is connected to the hub, and the other end of the connecting ring is sleeved on the motor assembly; The air guide duct comprises: an air guide shell, a storage cylinder and a plurality of air guide plates, the storage cylinder is arranged in the air guide shell, the plurality of air guide plates are arranged around the circumference of the storage cylinder, and one end of the plurality of air guide plates is connected to the inner surface of the air guide shell, and the other end of the plurality of air guide plates is connected to the storage cylinder, the air guide shell is connected to the air guide cover, the motor assembly is connected to the storage cylinder, and the air guide shell, the storage cylinder and the plurality of air guide plates enclose the air outlet; The inner surface of the air guide cover bulges inward to form a neck ring, and the neck ring is arranged at a position corresponding to one end of the fan blade assembly facing the air inlet; The fan module further comprises: a flexible shell, wherein the air guide cover and the air guide duct are arranged in the flexible shell; The flexible shell is made of a silicone material, and the surface of the flexible shell is raised to form a plurality of convex rings, wherein a plurality of convex points are arranged between two adjacent convex rings in the plurality of convex rings.

3. The fan module according to claim 2, wherein: The hub is configured to be conical, and the plurality of blades are bent and extended along the conical surface of the hub from the air inlet direction to the air outlet direction; From the air inlet direction to the air outlet direction, the blade spacing between two adjacent blades in the plurality of blades gradually increases; The wheel hub and the plurality of blades are located in the wind guide cover, one end of the connecting ring sleeved with the motor assembly extends into the wind guide pipe, and one end of the connecting ring connected to the wheel hub is located in the wind guide cover; The plurality of air guide plates are bent at one end close to the fan assembly, and the bending direction of the bent end of the plurality of air guide plates is opposite to the rotation direction of the fan assembly; The cross-sectional area of ​​one end of the hub connected to the connecting ring is greater than or equal to the cross-sectional area of ​​the storage tube; The hub and the plurality of blades are arranged between the neck ring and the receiving tube; The necking ring divides the air guide cover into a first cover body and a second cover body, the outer surfaces of the first cover body and the second cover body are provided with a plurality of reinforcing ribs, the first cover body is provided with the air inlet, the second cover body is connected to the air guide pipe, and the hub is located in the second cover body; The inner surface of the second cover body corresponding to the wheel hub is configured to be arc-shaped. Each of the plurality of blades includes a first end portion adjacent to an air outlet and a second end portion corresponding to the first end portion, wherein a width of the first end portion is greater than a width of the second end portion.

4. The fan module according to claim 2, wherein: The motor assembly comprises: a rotating shaft, a coil and a magnetic ring, the storage tube is provided with a connecting portion, one end of the rotating shaft is connected to the connecting portion, the other end of the rotating shaft is connected to the fan blade assembly, the coil is provided on the connecting portion, the magnetic ring is provided on the fan blade assembly, and the magnetic ring is sleeved on the coil; The connecting part comprises: a bracket, the end of the storage tube is raised inward to form an assembly frame, the assembly frame is provided with an assembly hole that passes through the assembly frame, one end of the bracket is inserted into and passes through the assembly hole, one end of the bracket passing through the assembly hole is connected to the rotating shaft, and the magnetic ring is sleeved on the bracket; The motor assembly further comprises: a motor shell, wherein the motor shell is sleeved on the magnetic ring, the connecting ring is sleeved on the motor shell, and one end of the rotating shaft connected to the fan blade assembly passes through the motor shell.

5. The fan module according to claim 4, wherein: The connecting part further comprises: a first sleeve, a second sleeve and a retaining spring, a mounting hole penetrating the bracket is provided on the bracket, a stop ring is formed by a bulge inside the mounting hole, the first sleeve and the second sleeve are respectively arranged at two ends of the stop ring, the retaining spring is arranged in the mounting hole and overlaps with the second sleeve, one end of the rotating shaft passes through the first sleeve and the second sleeve and is connected to the retaining spring, and the magnetic ring is arranged at the position where the first sleeve is arranged on the bracket; The bracket is connected to the assembly frame by clamping.

6. The fan module according to claim 5, wherein: The motor assembly further comprises: a conical helical spring, wherein the conical helical spring is sleeved on the rotating shaft, one end of the conical helical spring is connected to the motor housing, and the other end of the conical helical spring is connected to the first sleeve; or, The motor assembly also includes: a conical helical spring, which is sleeved on the rotating shaft, one end of the conical helical spring is connected to the wheel hub, and the other end of the conical helical spring is connected to the first sleeve.

7. The fan module according to claim 1, wherein: The fan assembly comprises: a motor assembly and a fan blade assembly; The air guide duct comprises: an air guide shell, a storage cylinder and a plurality of air guide plates, wherein the storage cylinder is arranged in the air guide shell, the plurality of air guide plates are arranged around the circumference of the storage cylinder, and one end of the plurality of air guide plates is connected to the inner surface of the air guide shell, and the other end of the plurality of air guide plates is connected to the storage cylinder; The motor assembly includes: a rotating shaft, a coil and a magnetic ring. A connecting portion is provided on the storage tube, one end of the rotating shaft is connected to the connecting portion, and the other end of the rotating shaft is connected to the fan blade assembly. The coil is provided on the connecting portion, and the magnetic ring is sleeved on the coil.

8. A motor for a portable rotating device, which is a high-speed motor, wherein: include: The cylinder comprises an outer ring portion, an inner ring portion and a plurality of connecting leaves connecting the outer ring portion and the inner ring portion, the rear end of the cylinder inletting air and the front end outletting air, the inner ring portion being shorter than the outer ring portion, the inner ring portion being located at the inner side corresponding to the front end portion of the outer ring portion, and the front end of the inner ring portion being forwardly beyond the front end of the outer ring portion; A base plate is formed inside the inner ring portion, a hollow shaft cylinder protrudes backwards from the base plate, and a first buffer is disposed outside the outer ring portion; A driving plate, mounted on the front end of the inner ring portion; The front end of the inner ring portion is provided with a receiving portion and a buckle, the receiving portion is used to receive the driving plate, and the buckle is used to buckle the driving plate; A stator assembly and a rotor assembly, wherein the driving plate is electrically connected to the stator assembly and drives the rotor assembly to rotate, and the stator assembly and the rotor assembly are nested and fixed to the shaft cylinder from behind; The substrate is provided with a wire-passing notch, and a wire passes through the wire-passing notch to electrically connect the driving plate and the stator assembly.

9. The motor of the portable rotating device according to claim 8, wherein: The rotor assembly comprises a rotating shaft, a bearing and a stopper, wherein the bearing, the stopper and the stator assembly are all inserted outside the rotating shaft, and the rotating shaft is inserted into the shaft cylinder from back to front; two bearings are provided, one of which is clamped outside the rotating shaft and inside the shaft cylinder from back to front, and the other bearing is clamped outside the rotating shaft and inside the shaft cylinder from front to back, and a second buffer is provided between the two bearings, and the inner diameter of the shaft cylinder corresponding to the second buffer is smaller than the inner diameter of the shaft cylinder corresponding to the bearing; a slot is provided radially outside the front part of the rotating shaft, and the stopper is clamped in the slot from front to back, and a third buffer is provided between the front bearing and the stopper; The rotor assembly also includes a casing, which is open toward the front and includes a rear portion and a side portion. The magnetic ring is fixed to the inner side of the casing side portion, and the stator assembly is fixed to the inner side of the magnetic ring. The shaft cylinder extends backward beyond the rear end of the inner ring portion but does not extend beyond the rear end of the outer ring portion. In the radial direction, the stator assembly, the magnetic ring and the side portion of the casing are sleeved on the outer side of the shaft cylinder, and the front end of the casing side portion is closely spaced from the inner ring portion in the axial direction.

10. The motor of the portable rotating device according to claim 9, wherein: The rotor assembly further comprises a fan, which is fixedly arranged at the rear end of the rotating shaft, and the front end of the fan is arranged closely adjacent to the rear end of the housing in the axial direction; The fan comprises a hub and a plurality of blades arranged around the hub, a rib blade is arranged on the inner side of the hub, a notch is arranged through the rear of the housing, a fourth buffer passes through the notch of the rear of the housing and is arranged between the rear bearing and the rib blade of the fan, a rear end of the fourth buffer abuts against the rib blade, and a front end of the fourth buffer abuts against the rear bearing; The bearing outer sleeve is provided with a fifth buffer member.

11. The motor of the portable rotating device according to claim 10, wherein: The fan is a diagonal flow fan, comprising a hub and a plurality of blades arranged around the outside of the hub, the hub radially increasing and extending from back to front, and the hub is arc-shaped; the difference between any two of the diameter of the hub, the diameter of the casing and the diameter of the inner ring portion is less than 0.5 mm.

12. The motor of the portable rotating device according to claim 9, wherein: The distance between the side of the housing and the rear end of the inner ring is smaller than the distance between the rear of the housing and the rear bearing; the distance between the side of the housing and the rear end of the inner ring is smaller than the distance between the front end of the rotating shaft and the rear end of the driving plate; The cylinder also includes a plurality of extension leaves, which correspond to the plurality of connecting leaves one by one, and are formed by extending backward from the connecting leaves; the connecting leaves extend vertically forward, and the extension leaves are curved and extended in an arc shape, and the plurality of extension leaves surround the outside of the side of the casing.

13. The motor of the portable rotating device according to claim 8, wherein: The outer diameter of the cylinder is 23.71-24.05 mm, and the length of the cylinder is 30-33.05 mm.

14. A high-speed motor, wherein: include: The cylinder body comprises an outer ring portion, an inner ring portion, and a plurality of connecting leaves connecting the outer ring portion and the inner ring portion, wherein a base plate is formed in the inner ring portion, and a shaft cylinder protrudes and extends backward from the base plate, wherein an integrally formed bearing mounting structure is arranged in the shaft cylinder, and the bearing mounting structure comprises a first bearing chamber and a second bearing chamber; A stator assembly and a rotor assembly, wherein the stator assembly, the rotor assembly and the shaft cylinder are nested and fixed; Wherein, the rotor assembly includes a rotating shaft, and a first bearing and a second bearing arranged radially outside the rotating shaft, the rotating shaft extends into the shaft cylinder, the first bearing is accommodated in the first bearing chamber, and the second bearing is accommodated in the second bearing chamber to fix the rotating shaft and the shaft cylinder.

15. The high-speed motor according to claim 14, wherein: A first step portion is formed on the outer side surface of the shaft cylinder, and the stator assembly is arranged outside the shaft cylinder and abuts against the first step portion forward.

16. The high-speed motor according to claim 15, wherein: The bearing mounting structure is integrally formed in the shaft cylinder, the first bearing chamber is located in front of the second bearing chamber, the rear end of the first bearing chamber forms a second step portion, and the rear end of the second bearing chamber forms a third step portion; The diameter of the first bearing chamber is larger than the diameter of the second bearing chamber, the outer diameter of the first bearing is larger than the outer diameter of the second bearing, and after the second bearing enters from the front end of the shaft cylinder and is accommodated in the second bearing chamber, the first bearing enters from the front end of the shaft cylinder and is accommodated in the first bearing chamber; At least one of a buffer pad is provided between the first bearing and the second step portion and between the second bearing and the third step portion; The diameter of the first bearing chamber is 6.8-7.2 mm, and the diameter of the second bearing chamber is 4.8-5.2 mm.

17. The high-speed motor according to claim 16, wherein: The bearing installation structure further includes a transition section disposed between the first bearing chamber and the second bearing chamber, wherein the diameter of the transition section decreases from front to back; The transition section accommodates an isolating member, and the isolating member is used to isolate and position the first bearing and the second bearing; the length of the isolating member is 5.65-6.05 mm.

18. The high-speed motor according to claim 16, wherein: The rotating shaft is inserted into the shaft tube and passes through the second bearing and the first bearing. A slot is formed at the front end of the rotating shaft. A limiter is clamped in the slot. A buffer is provided between the limiter and the first bearing.

19. The high-speed motor according to claim 14, wherein: The rotor assembly also includes a casing and a magnetic ring arranged radially outside the rotating shaft, the magnetic ring is arranged radially outside the stator assembly, the casing opening faces forward, and the side wall of the casing is arranged radially outside the magnetic ring; it also includes fan blades, the fan blades are fixed to the rear end of the rotating shaft, and the fan blades and the casing are arranged in close proximity.

20. The high-speed motor according to claim 19, wherein: It also includes a driving plate, which is arranged at the front end of the inner ring portion. The driving plate is electrically connected to the stator assembly and drives the rotor assembly and the fan blades to rotate.

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