Fan

Abstract

The utility model relates to the technical field of fans, in particular to a fan which comprises a fan head, a connecting piece and a base, one end of the connecting piece is connected with the fan head, the other end of the connecting piece is connected with the base, and the fan head is located above the base. The fan head comprises a shell and a fan module arranged in 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 arranged in the shell, 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 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 cars, and is popular among users. Desktop fans, in particular, are typically placed on a desktop and provide a cooling sensation to the user within a short distance. After a period of use, dust accumulates on the fan blades, affecting the cleanliness of the airflow. Currently, most desktop fans on the market have their blades and motors fixedly connected, making it impossible to disassemble the blades for cleaning. Even some fans have detachable blade and motor connections, but the connection method is often complex, usually requiring disassembly tools, resulting in low disassembly efficiency and impacting the user experience. Utility Model Content

[0003] The present invention aims to solve at least one of the above-mentioned defects by providing a fan whose blades can be easily disassembled and cleaned, and whose disassembly efficiency is high.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a fan, including a fan head, a connector and a base, one end of the connector being connected to the fan head and the other end being connected to the base, the fan head being located above the base; the fan head including a housing and a fan module disposed within the housing, the fan module including 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 being disposed within the housing, and both the locking member and the fan blades being detachably connected to the motor assembly.

[0005] 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.

[0006] Furthermore, the fan blades include a hub and a plurality of fan blades spaced circumferentially on the outer wall of the hub. A sleeve is provided inside the hub, and the sleeve is circumferentially limited and assembled on the motor assembly. The locking member can axially limit the sleeve between the locking member and the motor assembly.

[0007] Furthermore, the axial length of the sleeve is less than the axial length of the hub, and when the locking member fixes the fan blade to the motor assembly, the locking member is at least partially located inside the hub.

[0008] Furthermore, the hub includes an air guide surface that at least partially increases radially from the air inlet end of the housing to the air outlet end.

[0009] Furthermore, the fan head also includes an air outlet shroud and an air inlet shroud. The housing has a cylindrical structure with openings at both ends, and the air outlet shroud and the air inlet shroud are respectively disposed at both ends of the housing. The air outlet shroud and / or the air inlet shroud are detachably connected to the housing. The motor assembly is connected to the air inlet shroud or the air outlet shroud.

[0010] Furthermore, the air outlet cover is provided with a receiving groove, and a front cover can be detachably installed at the opening of the receiving groove.

[0011] Furthermore, a display module is provided inside the receiving groove; a sealing ring is provided between the front cover and the opening of the receiving groove.

[0012] Furthermore, one end of the connector is connected to the air inlet shroud, and the other end of the connector extends downward and bends to the bottom of the fan head, and is connected to the base.

[0013] Furthermore, the connector is rotatably connected to the base via a rocking structure; the rocking structure includes a rotating seat fixedly connected to the connector and a drive mechanism connected to the rotating seat and used to drive the rotating seat to rotate, the rotating seat being rotatably mounted on the base.

[0014] Furthermore, the fan head also includes a handle, which is disposed on the air inlet cover, the air outlet cover, or the housing.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] (1) The fan blade of this utility model is detachably connected to the motor assembly by a locking component. When the fan blade needs to be removed for cleaning, simply remove the locking component 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 component onto the motor assembly. The whole operation process is simple, convenient and quick, which not only allows the fan blade to be removed for cleaning, but also greatly improves the efficiency of disassembly.

[0017] (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.

[0018] (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 the protective structure can also effectively prevent the motor from burning out, which is conducive to greatly improving the service life of the product. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the fan of this utility model;

[0020] Figure 2 This is a structural schematic diagram of the fan of this utility model from another angle;

[0021] Figure 3 This is an exploded view of the fan of this utility model;

[0022] Figure 4 This is an exploded view of the fan of this utility model from another angle;

[0023] Figure 5 This is an exploded view of the wind turbine module of this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the fan blade of this utility model;

[0025] Figure 7 This is a cross-sectional view of the fan head of this utility model;

[0026] Figure 8 Another cross-sectional view of the fan head of this utility model;

[0027] Figure 9 Cross-sectional view of the fan of this utility model;

[0028] Figure 10 This is a schematic diagram of the internal structure of the base of this utility model;

[0029] Figure 11 for Figure 10 Enlarged view of point A in the middle;

[0030] Figure 12 This is a cross-sectional view of the base of this utility model. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] Example 1

[0034] This embodiment is an example of a fan, such as... Figures 1-4 As shown, the fan includes a fan head, a connector 6, and a base 7. One end of the connector 6 is connected to the fan head, and the other end is connected to the base 7. The fan head is located above the base 7. The connector 6 and the base 7 can support the fan head to be placed on a desktop or other surface for use as a desktop fan. Of course, in other embodiments, the fan may only have a fan head, or it may be a portable fan formed by combining the fan head with other structures, such as a handheld fan, a clip-on fan, a folding fan, a versatile fan, a small desktop fan, etc., and is not limited to this example.

[0035] The fan head includes a housing 1, a fan module 2, an air outlet shroud 3, and an air inlet shroud 4. The housing 1 is a cylindrical structure with openings at both ends. The air outlet shroud 3 and the air inlet shroud 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 of the housing 1 is the air outlet end. Airflow enters the housing 1 through the air inlet end and exits through the air outlet end of the housing 1. The air inlet shroud 4 is connected to the air inlet end of the housing 1, and the air outlet shroud 3 is connected to the air outlet end of the housing 1.

[0036] 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.

[0037] The fan module 2 is housed within the casing 1. Specifically, as follows... Figure 5As shown, the fan module 2 includes fan blades 21 and a motor assembly 22, wherein the motor assembly 22 is used to drive the fan blades 21 to rotate. In this embodiment, the fan blades 21 and the motor assembly 22 are detachably connected, and the fan blades 21 can be removed from the motor assembly 22 for cleaning. Compared with the traditional method where the fan blades are fixedly connected to the motor, and the fan blades can only be wiped or cannot be cleaned at all, the detachable design of the fan blades 21 in this embodiment can greatly improve the efficiency and cleanliness of the fan blade cleaning.

[0038] Specifically, 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 covers part of the outer periphery of the first motor 221 and one side of the drive end of the first motor 221. The drive end of the first motor 221 is the end of the output shaft of the first motor 221 that extends outward. The motor housing 222 is fixedly connected to the output shaft of the first motor 221, and has a through hole for the output shaft to extend outward. 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.

[0039] In this embodiment, the fan blade 21 is fitted onto the motor housing 222. Specifically, as shown... Figure 5 and Figure 6 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 wall of the hub 211.

[0040] As a preferred technical solution, this embodiment has a total of 10 fan blades 212. Of course, the number of fan blades can also be increased or decreased according to actual needs. The multi-blade design in this embodiment enables the fan blades 21 to have a large air volume and high air pressure even at relatively low speeds. In addition, the side of the fan blades 212 facing the air inlet is set as an inwardly concave arc edge 217, which provides a larger cutting surface when the fan blades rotate.

[0041] 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 is flush with it. 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.

[0042] In this embodiment, the sleeve 213 is sleeved on the motor housing 222, and the sleeve 213 is circumferentially limited to the motor assembly 22. When the first motor 221 is working, the fan blade 21 can rotate together with the motor housing 222.

[0043] Specifically, such as Figure 5 As shown, in this embodiment, the sleeve 213 is provided with a first opening 215 through which the output shaft of the first motor 221 passes, and the first opening 215 is circumferentially limited and connected to the output shaft of the first motor 221. Specifically, the end of the output shaft of the first motor 221 is provided with a cutting surface 224, and correspondingly, the first opening 215 is set as a cutting hole. When the sleeve 213 is sleeved on the motor housing 222, the fan blade 21 can rotate under the drive of the first motor 221 through the circumferential limiting cooperation of the first opening 215 and the cutting surface 224.

[0044] 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.

[0045] like Figure 4 , Figure 5 and Figure 7 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 output shaft of the first motor 221 is fixedly connected to a threaded post 225. The locking member 23 is set as a nut structure. When the locking member 23 is screwed onto the threaded post 225, the sleeve 213 can be fastened and clamped between the locking member 23 and the motor housing 222, that is, the sleeve 213 is axially limited between the locking member 23 and the motor housing 222, thereby ensuring the stability and safety of the fan blade 21 rotation.

[0046] When the fan blade 21 needs to be disassembled for cleaning, simply rotate the locking member 23 to remove it from the threaded post 225, and then the fan blade 21 can be directly 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.

[0047] 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.

[0048] Specifically, the air outlet cover 3 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. In this embodiment, the air outlet cover 3 and the housing 1 are detachably connected by a limiting snap-fit ​​between the buckle 131 and the slot 132.

[0049] like Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, in this embodiment, the air outlet hood 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 annular and is detachably connected to the housing 1. Specifically, the buckle 131 and the slot 132 are respectively disposed on the outer side wall of the first outer peripheral connecting part 31 and the inner side wall of the housing 1, or the buckle 131 and the slot 132 are respectively disposed on the inner side wall of the housing 1 and the outer side wall of the first outer peripheral connecting part 31. In this embodiment, the slot 132 is disposed on the outer side wall of the first outer peripheral connecting part 31, and the buckle 132 is disposed on the inner side wall of the housing 1. When the air outlet hood 3 is installed on the housing 1, the buckle 131 and the slot 132 are aligned, and the air outlet hood 3 is rotated to confine the buckle 131 within the slot 132, thereby securely installing the air outlet hood 3 on the housing 1.

[0050] A plurality of air outlet blades 33 are radially arranged between the first outer peripheral connecting portion 31 and the middle connecting portion 32. One end of each air outlet blade 33 is fixedly connected to the inner sidewall of the first outer peripheral connecting portion 31, and the other end is fixedly connected to the outer sidewall of the middle connecting portion 32. In this embodiment, the radial arrangement of the plurality of air outlet blades 33 makes the airflow gentler, further improving user comfort.

[0051] like Figure 7As 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.

[0052] 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.

[0053] As a preferred technical solution, a sealing ring (not shown in the figure) is provided at the mating end of the front cover 34 and the receiving groove 321. The sealing ring 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.

[0054] Of course, in other embodiments, the receiving groove 321 may not be provided, or nothing may be placed in the receiving groove 321, and the front cover 34 may be integrally formed with the middle connecting part 32.

[0055] In other embodiments, the receiving slot 321 can also be used to place light-emitting elements or fragrances, etc.

[0056] 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.

[0057] Specifically, such as Figure 7 As shown, the electrical connection assembly includes a first contact portion 133 and a second contact portion 134. The first contact portion 133 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 134 is disposed on the air outlet end of the housing 1 and is electrically connected to the electrical control assembly.

[0058] When the air vent 3 is connected to the housing 1, the first contact part 133 and the second contact part 134 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 133 and the second contact part 134.

[0059] When the air vent cover 3 is removed from the housing 1, the first contact part 133 and the second contact part 134 separate, so that the display module 35 is in a power-off state. The arrangement of the first contact part 133 and the second contact part 134 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.

[0060] 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.

[0061] As a preferred technical solution, such as Figure 8 As shown, in this embodiment, the end of the air outlet blade 33 facing the inside of the housing 1 is a first tip 331. The cross-sectional area of ​​the first tip 331 gradually increases from the air inlet end to the air outlet end of the housing 1. This setting can reduce the resistance of the airflow and ensure the air outlet effect.

[0062] 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 first 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 first guide surface 322 can guide and pressurize the air, which is beneficial to improving the air pressure and air delivery distance.

[0063] 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. When the locking member 23 is connected to the threaded post 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 facilitates the smooth flow of the air generated by the fan blades 21 to the guide surface 322 and reduces the noise generated by turbulence.

[0064] As a preferred technical solution, such as Figure 3 , Figure 4 , Figure 7 and Figure 8 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.

[0065] like Figure 7 and Figure 8 As shown, in this embodiment, the inner shell 12 and the outer shell 11 are fixedly connected. Specifically, in this embodiment, the outer side wall of the air outlet end of the inner shell 12 and the inner side wall of the outer shell 1 are fixedly connected by a connecting ring 14.

[0066] like Figure 7 As 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 121 facing the fan blade 21 and at least partially increasing radially. The guide surface 216 and the pressurizing surface 121 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.

[0067] 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.

[0068] In this embodiment, the air inlet cover 4 is fixedly connected to the air inlet end of the housing 1. As a preferred technical solution, the air inlet cover 4 and the air inlet end of the housing 1 are integrally formed. Of course, in other embodiments, the air inlet cover 4 can also be detachably connected to the housing 1 by one or more of the following methods: snap-fit, plug-in, threaded connection, screw connection, magnetic attraction, etc.

[0069] like Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, in this embodiment, the air inlet shroud 4 includes a second outer peripheral connecting part 41, an intermediate assembly part 42 and a plurality of air inlet blades 43. The second outer peripheral connecting part 41 is connected to the end of the housing 1. In this embodiment, the second outer peripheral connecting part 41 and the housing 1 are integrally formed.

[0070] like Figure 7 and Figure 9As shown, in this embodiment, the intermediate assembly part 42 is provided with a cylindrical structure with openings at both ends, and a plurality of air inlet blades 43 are evenly spaced along the circumference of the intermediate assembly part 42 between the second outer peripheral connecting part 41 and the intermediate assembly part 42. Specifically, one end of the air inlet blade 43 is fixedly connected to the inner side wall of the second outer peripheral connecting part 41, and the other end of the air inlet blade 43 is fixedly connected to the outer side wall of the intermediate assembly part 42.

[0071] 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.

[0072] In this embodiment, a motor mounting base 223 is provided at one end of the intermediate assembly part 42 facing the inside of the housing 1. The motor mounting base 223 is fixedly connected to the intermediate assembly part 42, and at least a portion of the motor mounting base 223 is located inside the intermediate assembly part 42. In this embodiment, most of the structure of the motor mounting base 223 is located inside the intermediate assembly part 42.

[0073] As a preferred technical solution, in this embodiment, the motor mounting base 223 and the intermediate assembly part 42 are integrally formed. The non-driving end of the first motor 221 is detachably connected to the motor mounting base 223 by screws. Of course, in other embodiments, the first motor 221 can also be connected to the motor mounting base 223 by other detachable means.

[0074] 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.

[0075] As a preferred technical solution, in this embodiment, the intermediate assembly part 42 includes a second guide surface 421 that is at least partially radially reduced from the air inlet end to the air outlet end of the housing 1. The arrangement of the second guide surface 421 can further play a good guiding role for the air.

[0076] like Figures 1-4 and Figure 9 As shown, 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 fan head, and is connected to the base 7.

[0077] As a preferred technical solution, the connector 6 is provided with a second opening 62 at the position facing the air inlet blade 43. The setting of the second opening 62 can reduce the impact of the connector 6 on the air inlet effect.

[0078] As a preferred technical solution, such as Figure 7 and Figure 9 As shown, in this embodiment, the upper end of the connector 6 is rotatably connected to the air inlet shroud 4. Specifically, an assembly 422 is fixedly connected to the end of the middle assembly 42 facing the outside of the housing 1. The assembly 422 has a rotating shaft 423 inside. A connector 61 is fixedly connected to the upper end of the connector 6, and the connector 61 is rotatably connected to the rotating shaft 423. In this embodiment, the rotatable connection between the fan head and the connector 6 can be achieved through the rotatable connection between the connector 61 and the rotating shaft 423, thereby allowing adjustment of the pitch angle of the fan head, which is beneficial to meeting different user needs.

[0079] As a preferred technical solution, a damping plate or friction plate (not shown in the figure) can be provided between the connector 61 and the rotating shaft 423. The damping plate or friction plate can enable damped rotation between the connector 61 and the rotating shaft 423, which is beneficial to maintaining the angle of the fan head after pitch adjustment.

[0080] As a preferred technical solution, such as Figure 9 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 fan head to rotate circumferentially, thereby realizing the oscillating function of the fan.

[0081] like Figure 9 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.

[0082] 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, and the lower end of the connector 6 is fixedly connected to the rotating base 91.

[0083] In this embodiment, the lower end of the connector 6 is fixedly connected to the rotating seat 91 by screws. Of course, in other embodiments, the lower end of the connector 6 can also be fixedly connected to the rotating seat 91 by other connection methods. The drive mechanism 92 is connected to the rotating seat 91 and is used to drive the rotating seat 91 to rotate, thereby causing the rotating seat 91 to drive the connector 6 to rotate.

[0084] In this embodiment, the rotating seat 91 is rotatably mounted on the cover 72. Specifically, the cover 72 has an installation opening, and an installation seat 93 is provided at the inner bottom of the installation opening. The installation seat 93 is a cylindrical structure with an open top, and its top end is fixedly connected to the inner bottom of the cover 72. In this embodiment, the installation seat 93 is detachably connected to the bottom of the cover 72 by screws. Of course, in other embodiments, the installation seat 93 can also be connected to the cover 72 by other detachable connection methods.

[0085] like Figure 9 and Figure 12 As shown, a ring 94 is fixedly provided on the inner wall of the mounting opening of the cover 72. The rotating seat 91 is rotatably attached to the ring 94, and a limiting ring 911 is fixedly connected to the bottom of the rotating seat 91. In this embodiment, the limiting ring 911 is detachably connected to the bottom of the rotating seat 91 by screws. Of course, in other embodiments, the limiting ring 911 can also be connected to the rotating seat 91 by other detachable connection methods. In this embodiment, the limiting ring 911 prevents the rotating seat 91 from coming off the top of the cover 72.

[0086] In this embodiment, the top of the rotating base 91 is provided with a mounting recess 912, and the bottom end of the connector 6 is fixedly connected to the mounting recess 912 on the rotating base 91. In this embodiment, the connector 6 is detachably connected to the mounting recess 912 on the rotating base 91 by screws. Of course, in other embodiments, the connector 6 can also be connected to the rotating base 91 by other detachable connection methods.

[0087] like Figure 9 , Figure 11 and Figure 12 As shown, in this embodiment, the drive mechanism 92 includes a second motor 921, a first gear 922, a second gear 923, and a protective structure 95. The second motor 921 is fixedly connected to the bottom of the rotating base 91, and the first gear 922 is sleeved on the output shaft of the second motor 921. A mounting post 931 is fixedly provided on the outer bottom of the mounting base 93, and the second gear 923 is rotatably sleeved on the mounting base 931. The first gear 922 and the second gear 923 mesh with each other.

[0088] The protective structure 95 is located on the outer bottom of the mounting base 93. Specifically, the mounting base 93 has a mounting frame 932, which is open at one end facing the second gear 923. The protective structure 95 includes a spring 951 and a stop member 952, wherein one end of the spring 951 is connected to the inner sidewall of the mounting frame 932, and the other end is connected to the stop member 952.

[0089] like Figure 11As shown, one end of the abutment member 952 is fixedly provided with a protrusion 953, which extends into the interior of the spring 951. The other end of the abutment member 952 is fixedly provided with a tooth 954, which meshes with the second gear 923. As a preferred technical solution, in this embodiment, the abutment member 952, the protrusion 953, and the tooth 954 are integrally formed.

[0090] In this embodiment, the bottom of the mounting base 93 is provided with a clearance groove 933. The output shaft of the second motor 921 extends from the clearance groove 933 to the bottom of the mounting base 93. The length of the clearance groove 933 is set according to the maximum rotation angle of the rotating base 91 to ensure the normal rotation of the rotating base 91.

[0091] When the second motor 921 is working, it drives the first gear 922 to rotate. Since the convex tooth 954 meshes with the second gear 923, the second gear 923 cannot rotate, causing the first gear 922 to revolve around the second gear 923. During the revolution of the first gear 922, the second motor 921 drives the entire rotating base 91 to rotate, which in turn drives the connecting piece 6 and the fan head to rotate together, realizing the oscillation function of the fan head.

[0092] When the second motor 921 is operating, if the user prevents the fan head from rotating or if the fan head cannot rotate under certain external forces, the interaction between the second gear 923 and the protruding tooth 954 causes the abutment 952 to compress the spring 951. This allows the protruding tooth 954 to disengage from the second gear 923, and under the action of the spring 951, the protruding tooth 954 can move from one slot of the second gear 923 to another. This reciprocating motion of the protruding tooth 954 allows the second gear 923 to rotate, thus ensuring the normal operation of the second motor 921 and preventing it from burning out. Throughout this process, the protruding tooth 925 repeatedly disengages from and engages with the slot of the second gear 923, producing a "ticking" sound that alerts the user to any abnormalities.

[0093] In addition, even if the second motor 921 is not working, the user can manually adjust the air outlet angle of the fan head without moving the base 7. By applying external force to rotate the fan head, the protruding tooth 954 is squeezed by the second gear 923 and compresses the spring 951, so that the protruding tooth 954 can repeatedly disengage and engage with the tooth groove of the second gear 923, so that the second gear 923 can rotate, and the fan head can rotate.

[0094] like Figure 10As shown, the electronic control component is housed within the base 71. Specifically, the electronic control component includes a battery 101, a control circuit board 102, and a charging board 103. The cover 72 has several control buttons 103, which can be designed with different types of buttons according to actual needs. Different buttons control different functions. The control buttons 103 are electrically connected to the control circuit board 102. The cover 72 also has a charging port 104, which is electrically connected to the charging board 103. In this embodiment, two batteries 101 are provided, and the two batteries are connected in series or in parallel according to actual needs.

[0095] Reasonable wiring is installed in the fan head, connector 6 and base 7 to electrically connect the second contact part 134, the first motor 221 and the second motor 921 to the electronic control component.

[0096] Example 2

[0097] This embodiment is a second embodiment of a fan, such as... Figure 2 , Figure 3 , Figure 7 and Figure 9 As shown, in this embodiment, a handle 5 is also fixedly provided on the assembly 421. In this embodiment, the handle 5 is fixedly connected to the assembly 421 by screws. Of course, in other embodiments, the handle 5 can also be connected to the assembly 421 by other fixed connection methods.

[0098] Handle 5 allows you to lift the fan and adjust its position, or to wall-mount or suspend it. When adjusting the fan head's tilt angle, you can hold handle 5 or simply turn the entire fan head to adjust it.

[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] 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. A fan, characterized by: The device includes a fan head, a connector, and a base. One end of the connector is connected to the fan head, and the other end is connected to the base. The fan head is located above the base. The fan head includes a housing and a fan module disposed within 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 disposed within the housing, and both the locking member and the fan blades are detachably connected to the motor assembly.

2. The fan of claim 1, wherein: The fan blades include a hub and a plurality of fan blades spaced circumferentially on the outer wall of the hub. A sleeve is provided inside the hub. The sleeve is circumferentially limited and assembled on the motor assembly. The locking member can axially limit the sleeve between the locking member and the motor assembly.

3. The fan of claim 2, wherein: The axial length of the sleeve is less than the axial length of the hub, and when the locking member fixes the fan blade to the motor assembly, the locking member is at least partially located inside the hub.

4. The fan of claim 2, wherein: The hub includes a guide surface that at least partially increases radially from the air inlet end of the housing to the air outlet end.

5. The fan of any of claims 1-4, wherein: The fan head also includes an air outlet shroud and an air inlet shroud. The housing has a cylindrical structure with openings at both ends. The air outlet shroud and the air inlet shroud are respectively located at both ends of the housing. The air outlet shroud and / or the air inlet shroud are detachably connected to the housing. The motor assembly is connected to the air inlet shroud or the air outlet shroud.

6. The fan of claim 5, wherein: The air outlet cover is provided with a receiving groove, and a front cover can be detachably installed at the opening of the receiving groove.

7. The fan of claim 6, wherein: The receiving groove is equipped with a display module; a sealing ring is provided between the front cover and the opening of the receiving groove.

8. The fan of claim 5, wherein: One end of the connector is connected to the air inlet cover, and the other end of the connector extends downward and bends to the bottom of the fan head, and is connected to the base.

9. The fan of claim 8, wherein: The connector is rotatably connected to the base via a rocking structure; the rocking structure includes a rotating seat fixedly connected to the connector and a drive mechanism connected to the rotating seat and used to drive the rotating seat to rotate, the rotating seat being rotatably mounted on the base.

10. The fan of claim 5, wherein: The fan head also includes a handle, which is provided on the air inlet cover, the air outlet cover, or the housing.

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