Air outlet structure and fan

Abstract

The utility model relates to the technical field of fans, in particular to an air outlet structure and a fan, the air outlet structure comprises a shell, an air outlet cover, an air inlet cover and a fan module arranged in the shell, the shell is of a cylindrical structure with two open ends, and the air outlet cover and the air inlet cover are arranged at the two ends of the shell respectively; the air outlet cover or / and the air inlet cover is / are detachably connected to the shell. The fan module comprises fan blades, a motor assembly used for driving the fan blades to rotate and a locking piece used for fixing the fan blades to the motor assembly, the motor assembly is connected to the air inlet cover or the air outlet cover, and the locking piece and the fan blades are detachably connected to the motor assembly. When the fan blades need to be cleaned, the locking piece is detached from the motor assembly, and then the fan blades can be detached from the motor assembly. The whole operation process is simple, convenient and fast, the fan blades can be independently taken down to be cleaned, and the disassembling efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and more specifically, to an air outlet structure and a fan. Background Technology

[0002] A fan is an electrical device that uses an electric motor to drive fan blades to rotate, thereby accelerating air circulation. It is suitable for various places such as homes, offices, outdoors, and vehicles, and is popular with users. Desktop fans, in particular, are typically placed on a desktop and can provide a cooling sensation to the user within a short distance. However, in most desktop fans on the market, the fan blades and motor are fixedly connected. After a period of use, dust will accumulate on the surface of the fan blades. If the fan blades were detachable, customers could remove the entire fan for thorough cleaning, which would greatly improve the efficiency and cleanliness of the cleaning process. Utility Model Content

[0003] One of the objectives of this utility model is to solve at least one of the above-mentioned defects and provide an air outlet structure in which the fan blades can be completely removed from the motor assembly, making it convenient for the fan blades to be disassembled and cleaned.

[0004] The second objective of this invention is to provide a fan.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an air outlet structure, including a housing, an air outlet hood, an air inlet hood, and a fan module disposed in the housing. The housing is a cylindrical structure with openings at both ends, and the air outlet hood and the air inlet hood are respectively disposed at both ends of the housing; the air outlet hood and / or the air inlet hood are detachably connected to the housing.

[0006] The fan module includes fan blades, a motor assembly for driving the fan blades to rotate, and a locking member for fixing the fan blades to the motor assembly. The motor assembly is connected to the air inlet cover or the air outlet cover. Both the locking member and the fan blades are detachably connected to the motor assembly.

[0007] This invention uses a locking mechanism to detachably fix the fan blades to the motor assembly. When the locking mechanism is connected to the motor assembly, the motor assembly drives the fan blades to rotate together when it is working. When cleaning the fan blades is required, the locking mechanism can be removed from the motor assembly, allowing the fan blades to be detached. The entire operation is simple, convenient, and quick, not only enabling the fan blades to be removed individually for cleaning but also greatly improving the efficiency of disassembly.

[0008] Furthermore, the fan blade includes a hub and a plurality of fan blades spaced circumferentially around the outer periphery of the hub. One end of the hub facing the air inlet end of the housing is connected to a sleeve located inside the hub. The motor assembly is circumferentially limited and assembled inside the sleeve. The locking member can axially limit the sleeve between the locking member and the motor assembly.

[0009] Furthermore, the motor assembly includes a first motor, a motor housing covering the first motor, and a motor mounting base connected to the first motor. The motor housing is fixedly connected to the output shaft of the first motor, and the motor mounting base is mounted on the air inlet shroud or the air outlet shroud. The fan blades are circumferentially limited to the motor housing. The motor housing is provided with a connecting protrusion that can be axially limited to the locking member. The sleeve is provided with a first opening for the connecting protrusion to extend out. When the locking member is connected to the connecting protrusion, the fan blades are axially limited to the motor housing.

[0010] Furthermore, the air outlet hood includes a first outer peripheral connecting part, a middle connecting part, and a plurality of air outlet blades. The first outer peripheral connecting part is connected to the end of the housing, and the plurality of air outlet blades are spaced apart between the first outer peripheral connecting part and the middle connecting part along the circumferential direction of the middle connecting part.

[0011] Furthermore, the intermediate connecting part is provided with a receiving groove, the receiving groove is provided with a display module, and the opening of the receiving groove is detachably fitted with a front cover.

[0012] A fan includes the above-described air outlet structure, and further includes a support structure for supporting the air outlet structure, the support structure being connected to the air outlet structure.

[0013] Furthermore, the support structure includes a connector and a base. The upper end of the connector is rotatably connected to the air inlet shroud via a rotating structure, and the lower end of the connector is rotatably connected to the base via a swing-out structure.

[0014] Furthermore, the rotating structure includes a hinge, a snap-fit ​​component, and a limiting component. The connecting component is rotatably connected to the air inlet hood via the hinge. The snap-fit ​​component is fixedly mounted on the air inlet hood. The limiting component is fixedly mounted on the connecting component. The snap-fit ​​component is provided with a limiting groove for limiting the rotation angle of the limiting component.

[0015] Furthermore, the swaying structure includes a rotating seat fixedly connected to the lower end of the connector and a drive mechanism connected to the rotating seat and used to drive the rotating seat to rotate, wherein the rotating seat is rotatably mounted on the base.

[0016] Furthermore, the driving mechanism includes a second motor fixedly connected to the base, a first gear sleeved on the output shaft of the second motor, a second gear rotatably mounted on the rotating seat, and a spring plate fixedly mounted on the rotating seat; the first gear meshes with the second gear, and the spring plate has protruding teeth that can mesh with the second gear; the second gear can drive the spring plate to rotate together through the protruding teeth; when the spring plate and the second gear cannot rotate synchronously, the spring plate can drive the protruding teeth to disengage from the second gear under the action of its own elastic force.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] (1) The fan blade of this utility model is detachably connected to the motor assembly by the locking part. When the fan blade needs to be removed for cleaning, simply remove the locking part from the motor assembly, and then the fan blade can be directly removed from the motor assembly. After the fan blade is cleaned, simply reassemble the fan blade and the locking part onto the motor assembly. The whole operation process is simple, convenient and quick. It not only allows the fan blade to be removed for cleaning, but also greatly improves the efficiency of disassembly.

[0019] (2) The air inlet cover and the connector of this utility model can rotate relative to each other, which makes it easy to adjust the pitch angle of the air outlet structure, which is conducive to meeting the user's needs. The air inlet cover is fixedly equipped with a handle. The handle not only makes it easy to adjust the placement of the fan, but also allows the fan to be hung on the wall or suspended. When adjusting the pitch angle of the air outlet structure, you can hold the handle to adjust it, or you can directly turn the entire fan head to adjust it.

[0020] (3) The drive mechanism of this utility model can not only drive the connecting parts and the air outlet structure to oscillate, meeting the different needs of users; but also the setting of the spring can effectively prevent the motor from burning out, which is conducive to greatly improving the service life of the product. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the fan of this utility model;

[0022] Figure 2 This is a structural schematic diagram of the fan of this utility model from another angle;

[0023] Figure 3 This is an exploded view of the air outlet structure of this utility model;

[0024] Figure 4 This is an exploded view of the air outlet structure of this utility model from another angle;

[0025] Figure 5 This is an exploded view of the casing of this utility model;

[0026] Figure 6 This is a cross-sectional view of the air outlet structure of this utility model;

[0027] Figure 7 This is a cross-sectional view of the air outlet structure of this utility model from another perspective;

[0028] Figure 8 This is a schematic diagram of the structure of the fan module of this utility model;

[0029] Figure 9 This is a schematic diagram of the structure of the fan blade of this utility model;

[0030] Figure 10 This is a structural diagram of the assembly of the air inlet cover and connecting parts of this utility model;

[0031] Figure 11 This is an exploded view of the assembly of the air inlet cover and the connecting parts of this utility model;

[0032] Figure 12 This is an exploded view of the assembly point of the air inlet cover and the connector of this utility model from another angle;

[0033] Figure 13 This is a cross-sectional view of the air inlet cover, connector and base of this utility model;

[0034] Figure 14 for Figure 13 Enlarged view of point A in the middle;

[0035] Figure 15 This is a schematic diagram of the head-shaking structure of this utility model;

[0036] Figure 16 This is a schematic diagram of the assembly of the rotating seat and the cover of this utility model;

[0037] Figure 17 for Figure 16 Enlarged view of point B in the middle. Detailed Implementation

[0038] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0039] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0040] Example 1

[0041] This embodiment is an example of an air outlet structure, such as... Figures 1-9 As shown, the air outlet structure in this embodiment includes a housing 1, a fan module 2, an air outlet hood 3, and an air inlet hood 4. The housing 1 is a cylindrical structure with openings at both ends. The air outlet hood 3 and the air inlet hood 4 are respectively located at both ends of the housing 1. Specifically, one end of the housing 1 is the air inlet end, and the other end is the air outlet end. Airflow enters the housing 1 through the air inlet end and exits through the air outlet end. The air inlet hood 4 is connected to the air inlet end of the housing 1, and the air outlet hood 3 is connected to the air outlet end of the housing 1.

[0042] As a preferred technical solution, in this embodiment, the housing 1 has a cylindrical structure, and correspondingly, the air outlet hood 3 and the air inlet hood 4 are both circular. Of course, the housing 1, the air outlet hood 3, and the air inlet hood 4 can also be designed into other shapes as needed.

[0043] The fan module 2 is housed within the casing 1. Specifically, as follows... Figure 3 and Figure 4 As shown, the fan module 2 includes a fan blade 21 and a motor assembly 22, wherein the motor assembly 22 is used to drive the fan blade 21 to rotate. In this embodiment, the fan blade 21 and the motor assembly 22 are detachably connected, and the fan blade 21 can be removed from the motor assembly 22 for cleaning. Compared with the traditional method where the fan blade is fixedly connected to the motor, and the fan blade can only be wiped or cannot be cleaned at all, the detachable design of the fan blade 21 in this embodiment can greatly improve the cleaning efficiency and cleanliness of the fan blade 21.

[0044] Specifically, such as Figure 7 As shown, in this embodiment, the motor assembly 22 includes a first motor 221 and a motor housing 222. The first motor 221 is assembled inside the motor housing 221, which completely encloses the outer periphery of the first motor 221 and one side of its drive end. The drive end of the first motor 221 is the end of its output shaft that extends outwards. The motor housing 222 is fixedly connected to the output shaft of the first motor 221. When the first motor 221 is working, the motor housing 222 can rotate together with the output shaft of the first motor 221. As a preferred technical solution, in this embodiment, the first motor 221 is a three-phase motor.

[0045] In this embodiment, the fan blade 21 is sleeved on the motor housing 222, specifically, as shown below. Figure 8 and Figure 9 As shown, the fan blade 21 includes a hub 211, a plurality of fan blades 212 and a sleeve 213. The plurality of fan blades 212 are evenly spaced along the circumference of the hub 211 on the outer side wall of the hub 211.

[0046] As a preferred technical solution, a total of 10 fan blades 212 are provided in this embodiment. Of course, the number of fan blades can also be increased or decreased according to actual needs. The design of multiple fan blades in this embodiment enables the fan blades 21 to have the ability of large air volume and large air pressure even at relatively low speed. In addition, the side of the fan blades 212 facing the air inlet end of the housing 1 is set as an inwardly concave arc edge 217. This design makes the fan blades 21 have a larger cutting surface when they rotate.

[0047] The sleeve 213 is located inside the hub 211. The end of the sleeve 213 facing the air inlet of the housing 1 is open, and the end of the sleeve 213 facing the air inlet of the housing 1 is connected to the end of the hub 211 facing the air inlet of the housing 1, and they are flush. As a preferred technical solution, in this embodiment, a plurality of reinforcing members 214 are provided between the sleeve 213 and the hub 211. The plurality of reinforcing members 214 can improve the stability of the sleeve 213, thereby improving the stability of the fan blade 21 rotation.

[0048] In this embodiment, the sleeve 213 is sleeved on the motor housing 222, and the sleeve 213 is circumferentially limited to the motor housing 222. When the first motor 221 is working, the fan blade 21 can rotate together with the motor housing 222.

[0049] Specifically, such as Figure 4 As shown, in this embodiment, the sleeve 213 and the motor housing 222 are circumferentially connected by a limiting groove 241 and a limiting protrusion 242. The limiting groove 241 and the limiting protrusion 242 are respectively disposed on the sleeve 213 and the motor housing 222, or the limiting groove 241 and the limiting protrusion 242 are respectively disposed on the sleeve 213 and the motor housing 222. In this embodiment, the inner surface of the sleeve 213 is provided with a plurality of limiting grooves 241 evenly spaced circumferentially, and the plurality of limiting grooves 241 extend out of the opening end of the sleeve 213. The outer surface of the motor housing 222 is provided with a plurality of limiting protrusions 242 evenly spaced circumferentially. When the sleeve 213 is fitted onto the motor housing 222, several limiting protrusions 242 can be inserted into several limiting grooves 241 one by one. Through the setting of the limiting grooves 241 and the limiting protrusions 242, the motor housing 222 can rotate while driving the sleeve 231 to rotate, and thus the first motor 221 can drive the entire fan blade 21 to rotate when it is working.

[0050] As a preferred technical solution, when the sleeve 213 is fitted onto the motor housing 222, the non-driving end of the first motor 221 is flush with the end of the sleeve 213 or the non-driving end of the first motor 221 is located inside the sleeve 213, that is, the entire first motor 221 is placed inside the sleeve 213. This arrangement can improve the utilization of space and make the structure more compact.

[0051] like Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, the fan module 2 in this embodiment also includes a locking member 23, which can axially limit the fan blades 21 to the motor assembly 22. Specifically, as shown... Figure 3 As shown, the motor housing 222 has a connecting protrusion 224 on the outer wall of the drive end of the first motor 221, such as... Figure 9 As shown, the sleeve 213 is provided with a first opening 215. The locking member 23 is detachably connected to the connecting protrusion 224 at the first opening 215. The sleeve 213 can be fastened between the locking member 23 and the motor housing 222 by the connection between the locking member 23 and the connecting protrusion 224.

[0052] Specifically, such as Figure 3 As shown, a plurality of first mating blocks 225 are provided at intervals along the circumference of the connecting protrusion 224 on its outer surface. Figure 4 As shown, a plurality of second mating blocks 231 are provided on the locking member 23 at intervals along the circumference of the locking member 23. Due to the setting of the first mating block 225 and the second mating block 231, when the locking member 23 is installed on the connecting protrusion 224, the locking member 23 is axially limited to the connecting protrusion 224. At this time, the locking member 23 cannot be removed from the connecting protrusion 224.

[0053] In this embodiment, the maximum outer diameter of the locking member 23 is greater than the inner diameter of the first opening 215. When the locking member 23 is connected to the connecting protrusion 224, the fan blade 21 cannot be dislodged from the motor housing 222. The locking member 23, the limiting groove 241, and the limiting protrusion 242 can securely connect the fan blade 21 to the motor housing 222, thereby ensuring the stability and safety of the fan blade 21 rotation.

[0054] When the fan blade 21 needs to be disassembled for cleaning, simply rotate the locking member 23 to remove it from the connecting protrusion 224, and then the entire fan blade 21 can be removed from the motor housing 222. After the fan blade 21 is cleaned, simply reassemble the fan blade 21 and the locking member 23 onto the motor housing 222. The entire operation is simple, convenient, and quick, not only allowing the fan blade 21 to be removed for cleaning independently, but also greatly improving the efficiency of disassembly.

[0055] In order for the fan blade 21 to be removed from the housing 1, the housing 1 needs to be configured as a structure with at least two detachable parts, or at least one of the air outlet cover 3 and the air inlet cover 4 needs to be detachably connected to the housing 1. As a preferred technical solution, in this embodiment, the air outlet cover 4 is detachably connected to the air outlet end of the housing 1. When it is necessary to remove the fan blade 21 for cleaning, the air outlet cover 4 is first removed from the housing 1, and then the fan blade 21 is removed from the air outlet end of the housing 1.

[0056] Specifically, the air outlet cover 3 and the housing 1 are detachably connected. Specifically, the air outlet cover 3 can be detachably connected to the housing 1 using one or more of the following methods: snap-fit, plug-in, threaded connection, screw connection, magnetic attraction, etc. In this embodiment, the air outlet cover 3 and the housing 1 are connected by a snap-fit ​​and slot connection method.

[0057] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, in this embodiment, the air outlet cover 3 includes a first outer peripheral connecting part 31, a middle connecting part 32 and a plurality of air outlet blades 33. In this embodiment, the first outer peripheral connecting part 31 is in the shape of a ring, and the first outer peripheral connecting part 31 is detachably connected to the housing 1 by a buckle and a slot.

[0058] The intermediate connecting portion 32 is located at the center of the air outlet shroud 3. A plurality of air outlet blades 33 are radially arranged between the first outer peripheral connecting portion 31 and the intermediate connecting portion 32. One end of each air outlet blade 33 is fixedly connected to the inner wall of the first outer peripheral connecting portion 31, and the other end is fixedly connected to the outer wall of the intermediate connecting portion 32. In this embodiment, the radial arrangement of the air outlet blades 33 makes the airflow gentler, further improving user comfort.

[0059] like Figure 3 As shown, in this embodiment, the middle connecting part 32 has a receiving groove 321 at one end facing the outside of the housing 1. The receiving groove 321 can be used to place the display module 35, which can be used to display information such as power, wind speed, and gear position. A front cover 34 is provided at the opening of the receiving groove 321. The front surface of the front cover 34 can be set as a plane, a concave surface recessed into the inside of the housing 1, or a convex surface protruding outward from the outside of the housing 1. As a preferred technical solution, in this embodiment, the front cover 34 is set as a concave surface recessed into the inside of the housing 1. Setting the front cover 34 as a concave surface can not only have a converging effect on the blown air and reduce turbulence, but also reduce reflection, which can greatly improve the clarity of the information displayed by the display module.

[0060] In this embodiment, the front cover 34 and the intermediate connecting part 32 are detachable. Specifically, the front cover 34 can be detachably connected to the intermediate connecting part 32 through one or more of the following methods: snap-fit, plug-in, threaded connection, screw connection, and magnetic attraction. In this embodiment, the front cover 31 and the intermediate connecting part 32 are fixedly connected by screws.

[0061] As a preferred technical solution, a sealing ring 341 is provided at the mating end of the front cover 34 and the receiving groove 321. The sealing ring 341 can improve the sealing performance of the front cover 34 when it is closed onto the receiving groove 321, and can reduce damage to the display module 35 when cleaning the air vent 3.

[0062] Of course, in other embodiments, the receiving groove 321 may not be provided on the intermediate connecting part 32, or nothing may be placed in the receiving groove 321, and the front cover 34 may be integrally formed with the intermediate connecting part 32.

[0063] In other embodiments, the receiving slot 321 can also be used to place light-emitting elements or fragrances, etc.

[0064] When electronic components such as a display module or light-emitting elements are installed in the receiving slot 321, in order to facilitate the quick disassembly of the air outlet cover 3 and the housing 1, as a preferred technical solution, an electrical connection component is provided on the air outlet cover 3 and the housing 1 in this embodiment, and the display module 35 and the electronic control component are electrically connected through the electrical connection component.

[0065] Specifically, such as Figure 3 and Figure 4 As shown, the electrical connection assembly includes a first contact portion 131 and a second contact portion 132. The first contact portion 131 is disposed on the first outer peripheral connecting portion 31 of the air outlet cover 3 and is electrically connected to the display module 35. The air outlet cover 3 has a hidden wire channel (not shown in the figure). The second contact portion 132 is disposed on the air outlet end of the housing 1 and is electrically connected to the electrical control component.

[0066] When the air vent 3 is connected to the housing 1, the first contact part 131 and the second contact part 132 come into contact, so that the display module 35 and the electronic control component are electrically connected. The electronic control component can supply power to the display module 35 and control the opening, information display, etc. of the display module 35 through the first contact part 131 and the second contact part 132.

[0067] When the air vent cover 3 is removed from the housing 1, the first contact part 131 and the second contact part 132 separate, so that the display module 35 is in a power-off state. The arrangement of the first contact part 131 and the second contact part 132 can ensure that the display module 35 can work normally, while avoiding the complexity of the connection circuit, so that the air vent cover 3 can be quickly removed from the housing 1.

[0068] As a preferred technical solution, a Pogopin connector is used as the electrical connection component in this embodiment. Of course, in other embodiments, other connectors capable of achieving electrical connection and electrical signal transmission through contact points or terminals may also be used as the electrical connection component.

[0069] As a preferred technical solution, such as Figure 6 As shown, in this embodiment, the end of the air outlet blade 33 facing the inner side of the housing 1 includes a first tip 331. The cross-sectional area of ​​the first tip 331 gradually increases from the air inlet end of the housing 1 to the air outlet end. This arrangement can reduce the resistance of the airflow and ensure the air outlet effect.

[0070] As a preferred technical solution, such as Figure 7 As shown, in this embodiment, the outer peripheral sidewall of the middle connecting part 32 of the air outlet hood 3 includes a guide surface 322 that is at least partially radially increased from the air inlet end of the housing 1 to the air outlet end. The guide surface 322 can further guide and pressurize the air, which is beneficial to improve the air pressure and air delivery distance.

[0071] As a preferred technical solution, such as Figure 7 As shown, in this embodiment, the axial length of the sleeve 213 is less than the axial length of the hub 211. The end of the sleeve 213 with the first opening 215 is located inside the hub 211. That is, there is a certain distance between the end of the sleeve 213 with the first opening 215 and the end of the hub 211 facing the air outlet of the housing 1. In this way, when the locking member 23 is connected to the connecting protrusion 224, the locking member 23 can be located at least partially inside the hub 211. As a preferred technical solution, in this embodiment, the locking member 23 can be completely located inside the hub 211. This arrangement allows the end of the hub 211 facing the air outlet of the housing 1 to be adjacent to and spaced apart from the end of the air outlet shroud 3 facing the air inlet of the housing 1. This is beneficial for the wind generated by the fan blade 21 to flow smoothly to the guide surface 322 and reduce the noise generated by turbulence.

[0072] In this embodiment, the air inlet cover 4 is detachably connected to the air inlet end of the housing 1. Specifically, the air inlet cover 4 can be detachably connected to the housing 1 through one or more of the following methods: snap-fit, plug-in, threaded connection, screw connection, magnetic attraction, etc. As a preferred technical solution, in this embodiment, the air inlet cover 4 is securely connected to the housing 1 through a screw connection and snap-fit ​​connection structure. Of course, in other embodiments, the air inlet cover 4 can also be integrally formed with the air inlet end of the housing 1.

[0073] like Figure 4 and Figure 7As shown, in this embodiment, the motor assembly 22 also includes a motor mounting base 223, and the first motor 221 is connected to the air inlet shroud 4 through the motor mounting base 223. Specifically, one end of the motor mounting base 223 is connected to the non-driving end of the first motor 221, and the other end is connected to the side of the air inlet shroud 4 facing the inside of the housing 1.

[0074] As a preferred technical solution, in this embodiment, the motor mounting base 223 is detachably connected to the non-driving end of the motor 221 by screws. Of course, the motor mounting base 223 can also be connected to the non-driving end of the motor 221 by other detachable methods. As a preferred technical solution, in this embodiment, the motor mounting base 223 is detachably connected to the air inlet shroud 4 by screws. Of course, the motor mounting base 223 can also be connected to the air inlet shroud 4 by other detachable methods.

[0075] Specifically, such as Figure 7 As shown, the motor mounting base 223 includes a first connecting portion 226 and a second connecting portion 227 connected together. In this embodiment, the first connecting portion 226 has a cylindrical structure with one end open, and the bottom end of the first connecting portion 226 is connected to the non-driving end of the first motor 221. The second connecting portion 227 is connected to the open end of the first connecting portion 226. In this embodiment, the second connecting portion 227 is a ring formed by extending the open end of the first connecting portion 226 radially outward along the first connecting portion 226. The second connecting portion 227 is connected to the air inlet shroud 4.

[0076] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, in this embodiment, the air inlet shroud 4 includes a second outer peripheral connecting part 41, a middle assembly part 42, and a plurality of air inlet blades 43. The second outer peripheral connecting part 41 is connected to the housing 1. In this embodiment, the second outer peripheral connecting part 41 and the housing 1 are detachably connected. Of course, in other embodiments, the second outer peripheral connecting part 41 may also be integrally formed with the housing 1.

[0077] like Figure 7 As shown, the second connecting portion 227 of the motor mounting base 223 is detachably mounted to the intermediate assembly portion 42 by screws. Specifically, in this embodiment, the intermediate assembly portion 42 includes a connecting ring 421 and a cover 422 with one end open, and the connecting ring 421 is fixedly connected to the open end of the cover 422. As a preferred technical solution, in this embodiment, the connecting ring 421 and the cover 422 are integrally formed, the second connecting portion 227 of the motor mounting base 223 is opposite to the end of the connecting ring 421, and the inner sidewalls of the connecting ring 421 and the cover 422 are provided with mounting posts 423 for screw connection with the second connecting portion 227.

[0078] Several air inlet blades 43 are evenly spaced along the circumference of the intermediate assembly portion 42 between the second outer peripheral connecting portion 41 and the intermediate assembly portion 42. Specifically, one end of the air inlet blade 43 is fixedly connected to the inner side wall of the second outer peripheral connecting portion 41, and the other end of the air inlet blade 43 is fixedly connected to the outer side wall of the connecting ring 421.

[0079] As a preferred technical solution, the inner wall of the second outer peripheral connecting part 41 facing the intermediate assembly part 42 in this embodiment includes at least a portion of a guide wall 411 that is radially gradually reduced from the air inlet end to the air outlet end of the housing 1. The guide wall 411 can play a good guiding role for air and is conducive to increasing the air intake volume.

[0080] As a preferred technical solution, such as Figure 6 As shown, in this embodiment, the end of the air inlet blade 43 facing the inner side of the housing 1 includes a second tip 432. The cross-sectional area of ​​the second tip 432 gradually decreases from the air inlet end of the housing 1 to the air outlet end. That is, the air inlet blade 43 becomes more pointed closer to the fan blade 21. This setting can effectively reduce the turbulence at the bottom of the air inlet blade 43 and effectively reduce the drag of the air inlet blade 43 on the airflow.

[0081] As a preferred technical solution, such as Figures 3-7 As shown, in this embodiment, the housing 1 includes an outer shell 11 and an inner shell 12. The outer shell 11 is fitted over the outer side of the inner shell 12, and the outer shell 11 is cylindrical with openings at both ends. The fan module 2 is disposed inside the inner shell 12. Of course, in other embodiments, the housing 1 may only include the outer shell 11.

[0082] like Figure 5 and Figure 7 As shown, the air outlet end of the inner housing 12 is provided with an assembly part 121, which abuts against the air outlet end of the outer housing 11. The second contact part 132 is provided on the air outlet end of the outer housing 11, and the inner housing 12 is provided with a through hole for the pin of the second contact part 132 to pass through.

[0083] The air inlet end of the inner housing 12 is connected to the second outer periphery 41 of the air inlet shroud 4 via a snap fastener, and the air inlet end of the outer housing 11 is connected to the second outer periphery 41 of the air inlet shroud 4 via screws. Figure 5 As shown, the outer side of the inner housing 12 is provided with a plurality of clearance recesses 122. The clearance recesses 122 are provided to facilitate screw connection between the outer housing 11 and the second outer peripheral portion 41, and can also serve as wiring channels for the second contact portion 132 to be electrically connected to the electronic control component.

[0084] like Figure 7As shown, in this embodiment, the hub 211 includes a guide surface 216 that at least partially increases radially from the air inlet end to the air outlet end of the housing 1, and the inner housing 12 includes a pressurizing surface 123 facing the fan blade 21 and at least partially increasing radially. The guide surface 216 and the pressurizing surface 123 together form a pressurizing channel, and the cross-sectional area at the air inlet end of the pressurizing channel is larger than the cross-sectional area at the air outlet end. The inner wall of the inner housing 12 and the outer wall of the hub 211 together form the fan blade radial shape. This structural arrangement not only plays a good guiding role, but also achieves the effect of pressurization and speed increase, greatly improving the air delivery distance.

[0085] As a preferred technical solution, in this embodiment, the distance between the blade edge of the fan blade 212 near the air outlet end of the housing 1 and the inner wall of the inner housing 12 is less than the distance between the blade edge near the air inlet end of the housing 1 and the inner wall of the inner housing 12. This arrangement can further achieve the functions of wind gathering and pressurization.

[0086] Example 2

[0087] This embodiment is an example of a fan, including the air outlet structure described in Embodiment 1, and also includes a support structure. The support structure supports the air outlet structure, and in this embodiment, the support structure can support the air outlet structure to be placed on a desktop or other table surface for use as a desktop fan. Of course, in other embodiments, the fan may only have an air outlet structure, or it may be a portable fan formed by combining the air outlet structure with other structures, such as: handheld fan, clip-on fan, folding fan, versatile fan, small desktop fan, etc., and is not limited to this example.

[0088] like Figure 1 , Figure 2 , Figures 11-13 As shown, the support structure in this embodiment includes a connector 6 and a base 7. In this embodiment, the connector 6 is generally L-shaped. Specifically, one end of the connector 6 is connected to the middle assembly part 42, and the other end of the connector 6 extends downward and bends to the bottom of the air outlet structure and is connected to the base 7.

[0089] As a preferred technical solution, the connector 6 is provided with a third opening 64 at the position facing the air inlet blade 43. The setting of the third opening 64 can reduce the impact of the connector 6 on the air inlet effect.

[0090] As a preferred technical solution, such as Figures 10-13 As shown, in this embodiment, the upper end of the connector 6 is rotatably connected to the air inlet shroud 4 via a rotating structure 8. Specifically, in this embodiment, the rotating structure 8 includes a hinge 81, a snap-fit ​​component 82, and a limiting component 83. The hinge 81, snap-fit ​​component 82, and limiting component 83 work together to achieve the rotatable connection between the connector 6 and the air inlet shroud 4, thereby facilitating the adjustment of the pitch angle of the air outlet structure to meet different user needs.

[0091] In this embodiment, the upper end of the connector 6 is provided with a connector 61. In this embodiment, the connector 61 is cylindrical. The side wall of the cover 422 away from the interior of the housing 1 is provided with a second opening 424. The connector 61 can extend into the interior of the cover 422 through the second opening 424. The rotating structure 8 is assembled with the connector 61 and the cover 422 to realize the pitch and rotation connection between the air outlet structure and the connector 6.

[0092] like Figure 10 As shown, in this embodiment, the rotating structure 8 is disposed inside the housing 422, wherein the hinge 81 is used to connect the air inlet shroud 4 and the connecting piece 7, allowing relative rotation between the two. As a preferred technical solution, in this embodiment, the hinge 81 is a rotational damping shaft, specifically, as shown... Figure 11 As shown, the hinge 81 includes a fixed part 811 and a rotating part 812 that are rotatably connected. Under the action of an external force, the rotating part 812 and the fixed part 811 can rotate relative to each other.

[0093] like Figure 11 As shown, the fixing part 811 of the hinge 81 is provided with a cutting surface 814, and the side wall of the connector 61 is provided with a insertion groove 611. The fixing part 811 of the hinge 81 can be inserted into the insertion groove 611. The shape of the insertion groove 611 is adapted to the fixing part 811. When the hinge 81 is inserted into the insertion groove 611 of the connector 61, the fixing part 811 cannot rotate relative to the connector 61.

[0094] like Figure 11 and Figure 12 As shown, the inner wall of the cover 422 is provided with a locking member 425, and the rotating part 812 of the hinge 81 is provided with a locking groove 813. The locking groove 813 is a through groove. The locking groove 813 on the rotating part 812 can be engaged with the locking member 425 from the end of the locking member 425 facing the inside of the housing 1. That is, the rotating part 812 can only be engaged with the locking member 425 from the end of the locking member 425 facing the inside of the housing 1, or disengage from the locking member 425 from the end of the locking member 425 facing the inside of the housing 1. The end of the locking member 425 facing the outside of the housing 1 is connected to the cover 422. The cover 422 can restrict the rotating part 812 from disengaging from the end of the locking member 425 facing the outside of the housing 1.

[0095] When the slot 813 of the hinge 81 engages with the clip 425 of the cover 422, the rotating part 812 and the cover 422 are rotated and limited, allowing the cover 422 to rotate relative to the connector 6, thus enabling the pitch angle adjustment of the entire air outlet structure. As a preferred technical solution, both ends of the connector 61 are provided with hinges 81 to form a rotatable connection with the two opposite sidewalls of the cover 422.

[0096] like Figures 10-12As shown, in this embodiment, the snap-fit ​​component 82 is fixed to the inner bottom of the cover 422 by screws. In this embodiment, the snap-fit ​​component 82 is provided with an arc-shaped protrusion 821. The arc-shaped protrusion 821 can match and fit the shape of the connector 61, thereby securing the connector 61 between the snap-fit ​​component 82 and the cover 422.

[0097] In this embodiment, the limiting member 83 is used to limit the pitch angle of the air outlet structure. Specifically, as shown... Figure 11 and Figure 12 As shown, the limiting member 83 includes a limiting post 831, and the arc-shaped protrusion 821 of the snap-fit ​​member 82 is provided with a limiting groove 822. The limiting post 831 of the limiting member 83 passes through the limiting groove 822 and is fixedly connected to the connector 61. In this embodiment, the limiting post 831 is fixed to the connector 61 by screws. Of course, in other embodiments, the fixed connection between the limiting post 831 and the connector 61 can also be achieved by other connection methods. The pitch angle range of the air outlet structure is limited by the abutment and limiting of the limiting post 831 and the limiting groove 822.

[0098] like Figure 2 , Figure 11 and Figure 12 As shown, in this embodiment, a handle 5 is also fixedly provided on the cover 422. In this embodiment, the handle 5 is fixedly connected to the cover 422 by screws. The handle 5 can lift the fan and adjust its placement position, or it can be wall-mounted or suspended. When adjusting the pitch angle of the air outlet structure, the handle 5 can be held for adjustment, or the entire air outlet structure can be directly turned for adjustment.

[0099] In this embodiment, a handle position 51 is provided on the upper part of the handle 5 facing the air inlet blade 43. The handle position 51 has a large enough space, which not only makes it easy to place the fingers and improves the stability of the handle, but also facilitates the passage of air, thereby greatly reducing the impact on the air intake effect.

[0100] As a preferred technical solution, such as Figure 13 As shown, in this embodiment, the lower end of the connector 6 is rotatably connected to the base 7 through the oscillating structure 9, so that the connector 6 can drive the air outlet structure to rotate circumferentially, thereby realizing the oscillating function of the fan.

[0101] like Figure 13 As shown, in this embodiment, the base 7 includes a seat 71 and a cover 72. The seat 71 has a hollow structure with an open top, and the cover 72 is fixedly connected to the top of the seat 71 by screws. In this embodiment, the bottom of the seat 71 is provided with an anti-slip pad 711. In this embodiment, the anti-slip pad 711 is made of silicone. The anti-slip pad 711 helps to improve the stability of the fan placement.

[0102] like Figures 13-15As shown, in this embodiment, the lower end of the connector 6 is rotatably connected to the cover 72 via a rocking structure 9. Specifically, the rocking structure 9 includes a rotating base 91 and a driving mechanism 92. The lower end of the connector 6 is fixedly connected to the rotating base 91. In this embodiment, the lower end of the connector 6 is fixedly connected to the rotating base 91 by screws. Of course, in other embodiments, the lower end of the connector 6 can also be fixedly connected to the rotating base 91 in other ways. The driving mechanism 92 is connected to the rotating base 91 and is used to drive the rotating base 91 to rotate, thereby causing the rotating base 91 to drive the connector 6 to rotate.

[0103] In this embodiment, the rotating seat 91 is rotatably mounted on the cover 72. Specifically, as shown... Figure 16 As shown, the cover 72 is provided with a groove 721, and the edge of the groove 721 of the cover 72 is provided with a step 722. The rotating seat 91 is provided with an overlapping part 914. When the rotating seat 91 is placed in the groove 721, the overlapping part 914 of the rotating seat 91 overlaps on the step 722.

[0104] As a preferred technical solution, in this embodiment, the bottom of the rotating seat 91 is provided with a connecting post 911, and the groove 721 of the cover 72 is provided with a downwardly extending mounting cylinder 723. The connecting post 911 and the mounting cylinder 723 are rotatably connected by a bearing 94. As a preferred technical solution, in this embodiment, the bearing 94 is a ball bearing.

[0105] like Figure 14 As shown, in this embodiment, two bearings 94 are provided between the connecting column 911 and the mounting cylinder 723. The two bearings 94 are arranged vertically and horizontally. By arranging the two bearings 94 at intervals, it is beneficial to improve the stability of the rotation of the rotating seat 91, thereby greatly reducing the swaying angle of the air outlet structure.

[0106] Specifically, the drive mechanism 92 includes a second motor 921, a first gear 922, a second gear 923, and a spring 924. The second motor 921 is fixedly installed at the inner bottom of the cover 72, and the first gear 922 is sleeved on the output shaft of the second motor 921.

[0107] The top of the rotating base 91 is provided with a mounting protrusion 912. The second gear 922 is an external gear ring, which is rotatably sleeved on the mounting protrusion 912. The first gear 922 meshes with the second gear 922. When the second motor 921 is working, it can drive the first gear 922 to rotate, and the first gear 922 can drive the second gear 923 to rotate.

[0108] In this embodiment, the spring piece 924 is fixedly connected to the top of the rotating base 91. Specifically, the rotating base 91 is provided with two locking grooves 913, and both ends of the spring piece 924 are respectively limited within the two locking grooves 913. As a preferred technical solution, the spring piece 924 in this embodiment is made of POM.

[0109] like Figure 15 As shown, in this embodiment, a protruding tooth 925 is fixedly provided on the spring piece 924. As a preferred technical solution, in this embodiment, the spring piece 924 and the protruding tooth 925 are integrally formed. The protruding tooth 925 meshes with the second gear 923. When the second gear 923 rotates, because the protruding tooth 925 meshes with the second gear 923, the second gear 923 can drive the spring piece 924 to rotate together, thereby driving the rotating seat 91 to rotate.

[0110] When the spring 924 and the second gear 923 cannot rotate synchronously, the spring 924 can drive the tooth 925 to disengage from the tooth groove of the second gear 923 under its own elastic force, and can also re-engage with the tooth groove of the second gear 923 by its own elastic reset. That is, the tooth 925 can repeatedly disengage from and engage with the tooth groove of the second gear 923, so that even if the spring 924 cannot rotate synchronously with the second gear 923, the second gear 923 can still rotate normally.

[0111] Specifically, when the second motor 921 is working, the second motor 921 drives the first gear 922 to rotate, and the first gear 922 drives the second gear 923 to rotate. Since the protruding teeth 925 of the spring piece 924 mesh with the second gear 923, the second gear 923 can drive the spring piece 924 to rotate together. The spring piece 924 drives the rotating seat 91 to rotate. When the rotating seat 91 rotates, it can drive the connecting piece 6 and the entire air outlet structure to rotate, realizing the oscillation function of the air outlet structure.

[0112] When the second motor 921 is working, if the user does not allow the air outlet structure to rotate or the air outlet structure cannot rotate under certain external forces, the convex tooth 925 can repeatedly disengage and engage with the tooth groove of the second gear 923. That is, the convex tooth 925 can move from one tooth groove of the second gear 923 to another tooth groove, and at the same time, it will produce a "click-click-click" sound. This sound can remind the user that there is an abnormal situation, but the second gear 923 can still rotate normally, thus ensuring the normal operation of the second motor 921 and preventing the second motor 921 from burning out.

[0113] In addition, even if the second motor 921 is not working, the user can manually adjust the air outlet angle of the air outlet structure without moving the base 7. By applying external force to rotate the air outlet structure, the protruding tooth 925 of the spring 924 can disengage from the tooth groove of the second gear 923, causing the rotating seat 91 to rotate, thereby adjusting the pitch angle of the air outlet structure.

[0114] like Figure 15 and Figure 16As shown, in this embodiment, the rotating seat 91 is provided with a clearance groove 915. The output shaft of the second motor 921 extends from the clearance groove 915 to the top of the rotating seat 91. The length of the clearance groove 913 is set according to the maximum rotation angle of the rotating seat 91 to ensure the normal rotation of the rotating seat 91.

[0115] As a preferred technical solution, in order to reduce the friction between the rotating seat 91 and the cover 72, such as Figure 16 and Figure 17 As shown, in this embodiment, the step 722 of the cover 72 is also provided with a number of support structures 93, and the number of support structures 93 are evenly spaced along the circumference of the cover 73 on the step 722.

[0116] Specifically, such as Figure 17 As shown, in this embodiment, the support structure 93 includes a mounting cylinder 931, a spring 932, and a ball 932. A mounting groove 724 is provided on the step 722. The mounting cylinder 931 is located in the mounting groove 724, and the spring 932 is located in the mounting cylinder 931. One end of the spring 932 is connected to the bottom of the mounting cylinder 931, and the other end is connected to the ball 932. Part of the ball 932 extends out of the mounting groove 724 and contacts the bottom of the overlapping part 914. The arrangement of the ball 932 greatly reduces the contact area between the overlapping part 914 and the step 722, which helps to reduce the friction between the rotating seat 91 and the cover 72, ensures the smooth rotation of the rotating seat 91, and thus reduces abnormal noise.

[0117] In this embodiment, the electronic control component is housed within the base 71. Specifically, the electronic control component includes a battery, a control circuit board, and a charging board, among other structures (not shown in the figure). The cover 72 has several control buttons 103, which can be designed with different types of buttons to control different functions. The control buttons 103 are electrically connected to the control circuit board. The cover 72 also has a charging port 104, which is electrically connected to the charging board. In this embodiment, two batteries are used, and they are connected in series or parallel depending on actual needs.

[0118] As a preferred technical solution, such as Figure 11 and Figure 12 As shown, in this embodiment, the connector 6 is configured as a two-part detachable split structure, namely a support shell 62 and a connecting cover 63. The cavity formed between the two parts of the support shell 62 and the connecting cover 63 is used for wire routing.

[0119] like Figure 6 and Figure 7As shown, in this embodiment, at least one air inlet blade 43 of the air inlet shroud 4 is set as a hollow blade 431. The top opening of the hollow blade 431 is connected to the clearance recess 122 of the inner shell 12, and the bottom opening of the hollow blade 431 is connected to the intermediate assembly part 42.

[0120] like Figures 11-13 As shown, the first through hole 823 on the connector 82 through which the power supply line passes. Figure 13 As shown, the connector 61 has a cable passage 612 through which the power supply line passes. The cable passage 612 on the connector 61 is connected to the internal cavity of the connector 6, and the bottom end of the internal cavity of the connector 6 is connected to the interior of the base 7. Figure 13 As shown, the bottom of the rotating base 91 is provided with a second through hole 916 through which the wire passes, and the bottom of the groove 721 of the cover 72 is provided with a third through hole 725 through which the power supply wire passes.

[0121] In this embodiment, the wire of the second contact part 132 enters the interior of the intermediate mounting base 42 through the avoidance recess 122 and the hollow blade 431, and then enters the interior of the base 7 through the first wire through hole 823 of the snap-fit ​​82, the wire passage 612 of the connector 61, the interior of the cavity of the connector 6, the second through hole 916 of the rotating base 91, and the third through hole 725 at the bottom of the groove 721, and is electrically connected to the electronic control component.

[0122] In this embodiment, the wire of the first motor 221 enters the interior of the base 7 through the first through hole 823 of the snap-fit ​​82, the wire passage 612 of the connector 61, the cavity of the connector 6, the second through hole 916 of the rotating seat 91, and the third through hole 725 at the bottom of the groove 721, and is electrically connected to the electronic control component.

[0123] It should be noted that while the preferred embodiments of this utility model are provided in the specification and accompanying drawings, this utility model can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments are not intended to impose additional limitations on the content of this utility model; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. The above-described technical features can be further combined to form various embodiments not listed above, all of which are considered to be within the scope of this specification. Furthermore, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An air outlet structure, characterized by: The device includes a housing, an air outlet hood, an air inlet hood, and a fan module disposed within the housing. The housing has a cylindrical structure with openings at both ends, and the air outlet hood and the air inlet hood are respectively disposed at both ends of the housing. The air outlet hood and / or the air inlet hood are detachably connected to the housing. The fan module includes fan blades, a motor assembly for driving the fan blades to rotate, and a locking member for fixing the fan blades to the motor assembly. The motor assembly is connected to the air inlet cover or the air outlet cover. The locking member and the fan blades are detachably connected to the motor assembly.

2. The air outlet structure according to claim 1, characterized in that: The fan blades include a hub and a plurality of fan blades spaced circumferentially around the outer periphery of the hub. A sleeve located inside the hub is connected to one end of the hub facing the air inlet end of the housing. The motor assembly is circumferentially limited and assembled inside the sleeve. The locking member can axially limit the sleeve between the locking member and the motor assembly.

3. The air outlet structure according to claim 2, characterized in that: The motor assembly includes a first motor, a motor housing covering the first motor, and a motor mounting base connected to the first motor. The motor housing is fixedly connected to the output shaft of the first motor, and the motor mounting base is mounted on the air inlet cover or the air outlet cover. The fan blades are circumferentially limited to the motor housing. The motor housing is provided with a connecting protrusion that can be axially limited to the locking member. The sleeve is provided with a first opening for the connecting protrusion to extend out. When the locking member is connected to the connecting protrusion, the fan blades are axially limited to the motor housing.

4. The air outlet structure according to any one of claims 1-3, characterized in that: The air outlet hood includes a first outer peripheral connecting part, a middle connecting part, and a plurality of air outlet blades. The first outer peripheral connecting part is connected to the end of the housing, and the plurality of air outlet blades are spaced apart between the first outer peripheral connecting part and the middle connecting part along the circumferential direction of the middle connecting part.

5. The air outlet structure according to claim 4, characterized in that: The intermediate connecting part is provided with a receiving groove, and a display module is provided in the receiving groove. The opening of the receiving groove can be detachably installed with a front cover.

6. A fan characterized by: The air outlet structure includes any one of claims 1-5, and further includes a support structure for supporting the air outlet structure, wherein the support structure is connected to the air outlet structure.

7. The fan of claim 6, wherein: The support structure includes a connector and a base. The upper end of the connector is rotatably connected to the air inlet shroud via a rotating structure, and the lower end of the connector is rotatably connected to the base via a swing-out structure.

8. The fan of claim 7, wherein: The rotating structure includes a hinge, a snap-fit ​​component, and a limiting component. The connecting component is rotatably connected to the air inlet hood via the hinge. The snap-fit ​​component is fixedly mounted on the air inlet hood. The limiting component is fixedly mounted on the connecting component. The snap-fit ​​component is provided with a limiting groove for limiting the rotation angle of the limiting component.

9. The fan of claim 7, wherein: The oscillating structure includes a rotating seat fixedly connected to the lower end of the connector and a drive mechanism connected to the rotating seat and used to drive the rotating seat to rotate. The rotating seat is rotatably mounted on the base.

10. The fan of claim 9, wherein: The driving mechanism includes a second motor fixedly connected to the base, a first gear sleeved on the output shaft of the second motor, a second gear rotatably mounted on the rotating seat, and a spring plate fixedly mounted on the rotating seat; the first gear meshes with the second gear, and the spring plate has protruding teeth that can mesh with the second gear; the second gear can drive the spring plate to rotate together through the protruding teeth; when the spring plate and the second gear cannot rotate synchronously, the spring plate can drive the protruding teeth to disengage from the second gear under the action of its own elastic force.

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