Fan capable of rotating by 360 degrees

By designing a fan that can rotate 360° and using the connection between the flexible component and the fixed base, the problem of laborious fan angle adjustment was solved, enabling flexible adjustment of the airflow direction and angle, and improving the user experience.

CN223938273UActive Publication Date: 2026-02-24POWER IDEA TECH (SHENZHEN) CO LTD
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Patent Information

Application Number
CN202422964667.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-29
Publication Date
2026-02-24
Estimated Expiration
2034-11-29

AI Technical Summary

Technical Problem

Existing fans require a lot of physical effort to adjust the airflow angle, and the adjustment process is inflexible, causing inconvenience for users.

Method used

A fan comprising a blowing structure, a flexible component, and a fixed base has been designed. The flexible component has a deformable part. Through the connection between the flexible component and the fixed base, the fan can rotate and adjust the blowing direction within a 360° range, so as to change the blowing angle and direction without moving the fan.

Benefits of technology

It enables flexible adjustment of the fan's airflow direction and angle, reducing physical exertion, improving the user experience, and meeting diverse usage needs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The fan capable of rotating by 360 degrees comprises an air blowing structure, a flexible part and a fixing base, and the air blowing structure is provided with an air inlet side and an air outlet side which are opposite to each other; the flexible part is provided with a first end, a second end and a deformation part connected between the first end and the second end, and the first end is connected to the air inlet side; the fixing seat is provided with a first side and a second side which are opposite, the first side is provided with an assembling structure, and the second end is connected to the assembling structure; the second side is used for positioning. The flexible part comprises a deformation part capable of deforming from any angle and any direction, and in the using process, a user can rotate the deformation part, so that the air blowing structure can rotate by 360 degrees; the deformation part can be bent and adjusted to realize up-down translation of the air blowing structure along the circumferential direction of the fan; and the deformation part can swing up and down, so that the blowing structure swings up and down. The angle and the direction of the blowing direction of the blowing structure can be adjusted only by adjusting the deformation part, and a large amount of physical strength does not need to be consumed.
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Description

Technical Field

[0001] This utility model belongs to the field of fan technology, and in particular relates to a fan that can rotate 360°. Background Technology

[0002] Fans are widely used in daily life, and they can cool and reduce noise by blowing air. A fan usually consists of a fan body and a mounting base. The fan body is mounted on the mounting base, and the mounting base supports the fan body.

[0003] Most fans on the market today are mounted on a platform such as the ground to blow air in a directional manner. Some fans are also mounted on a platform such as the ground and can blow air within a certain angle range by adjusting the oscillation setting, but the blowing angle of these fans is limited, generally only 90° and 120°.

[0004] In practical use, to achieve airflow at other angles, to avoid damaging the mounting base due to friction with the platform, it's usually necessary to move the entire fan so the mounting base is off the ground. However, the fan itself is quite heavy, requiring considerable physical effort to move. Furthermore, adjusting the angle to achieve the desired blowing angle is time-consuming, which also causes inconvenience for users. Utility Model Content

[0005] The technical objective of this invention is to provide a fan that can rotate 360°, aiming to solve the technical problem in related technologies where fans need to expend a lot of physical effort to achieve airflow at other angles.

[0006] To solve the above-mentioned technical problems, this utility model is implemented as follows: a fan that can rotate 360° includes a blowing structure, a flexible component, and a fixed base. The blowing structure has an air inlet side and an air outlet side. The flexible component has a first end, a second end, and a deformable portion connecting the first end and the second end. The first end is connected to the air inlet side. The fixed base has an opposing first side and a second side. The first side is provided with an assembly structure, and the second end is connected to the assembly structure. The second side is used for positioning.

[0007] Furthermore, in some embodiments, the air inlet side includes a mounting platform and a mounting structure disposed on the mounting platform, wherein the first end is detachably connected to the mounting structure.

[0008] Furthermore, in some embodiments, the mounting structure includes a nut post disposed on the mounting platform and a nut groove formed in the nut post, wherein the first end passes through the nut groove and the outer side of the first end abuts against the inner side of the nut groove.

[0009] Furthermore, in some embodiments, the mounting structure includes a snap-fit ​​hole formed in the mounting platform, and the first end snaps into the snap-fit ​​hole.

[0010] Furthermore, in some embodiments, the mounting structure includes a protrusion extending from the mounting platform and a first latch disposed on the protrusion, the first end of which is provided with a second latch, and the first latch being connected to the second latch.

[0011] Furthermore, in some embodiments, the first latch includes a slot formed on the periphery of the protrusion, and the second latch includes a protrusion extending from the inner sidewall of the first end.

[0012] Furthermore, in some embodiments, the first buckle includes a buckle protruding from the periphery of the protrusion, and the second buckle includes a buckle groove formed on the periphery of the first end.

[0013] Furthermore, in some embodiments, the fixing seat includes a seat body and a connecting rod connected to the seat body, the assembly structure is disposed at the end of the connecting rod away from the seat body, and the side of the seat body opposite to the connecting rod is the second side.

[0014] Furthermore, in some embodiments, the assembly structure includes a limiting post disposed on the periphery of the connecting rod, and a limiting groove is formed on the periphery of the second end, with the limiting post connected to the limiting groove.

[0015] Furthermore, in some embodiments, the assembly structure includes a limiting groove formed on the periphery of the connecting rod, and a limiting post is provided on the periphery of the second end, the limiting post being connected to the limiting groove.

[0016] Furthermore, in some embodiments, the connecting rod includes a telescopic rod and an operating key, the operating key being used to adjust the length of the telescopic rod.

[0017] Furthermore, in some embodiments, the fixing base also includes a plurality of legs spaced apart along the circumference of the base body, the legs being connected to the base body and being foldable or unfoldable relative to the base body.

[0018] The 360° rotating fan in this invention has the following advantages compared to related technologies:

[0019] In this invention, the blower structure has an air outlet side and an air inlet side. When the fan is powered on, the blower structure starts, accelerating the airflow on the air outlet side, thus generating wind power. Additionally, the first end of the flexible component is connected to the air inlet side of the blower structure, and the second end is connected to the assembly structure of the fixed base. This allows for a relatively fixed connection between the blower structure, the flexible component, and the fixed base. Furthermore, the flexible component includes a deformable part that can deform from any angle and direction. Therefore, after the blower structure, the flexible component, and the fixed base are assembled, during use, the user can first position the fan by fixing the second side of the fixed base to a platform such as the ground. Then, by rotating the deformable part between the air inlet side of the blower structure and the first side of the fixed base, the blower structure can rotate 360°. The deformable part can also be bent and adjusted to allow the blower structure to move vertically along the circumference of the fan. Simultaneously, the deformable part can be swung up and down to allow the blower structure to swing vertically. Therefore, this utility model allows for adjustment of the blowing direction of the blowing structure in both angle and direction without moving the fan, simply by adjusting the deformable part. This not only eliminates the need for excessive physical exertion but also provides flexibility in the adjustment process. Users can adjust the blowing direction in multiple directions according to their actual needs, satisfying diverse requirements and improving the user experience. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the fan structure in an embodiment of this utility model.

[0022] In the accompanying drawings, the reference numerals indicate: 1. Blowing structure; 11. Mounting platform; 12. Mounting structure; 2. Flexible component; 21. Deformable part; 3. Fixed seat; 31. Seat body; 32. Connecting rod; 33. Support leg. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] Please see Figure 1 This utility model provides a fan that can rotate 360°, including a blowing structure 1, a flexible member 2, and a fixed base 3. The blowing structure 1 has an air inlet side and an air outlet side. The flexible member 2 has a first end, a second end, and a deformable part 21 connecting the first end and the second end. The first end is connected to the air inlet side. The fixed base 3 has a first side and a second side. The first side is provided with an assembly structure, and the second end is connected to the assembly structure. The second side is used for positioning.

[0027] In this embodiment of the invention, the blower structure 1 has an air outlet side and an air inlet side. When the fan is powered on, the blower structure 1 starts, which can accelerate the airflow on the air outlet side, thereby generating wind power by blowing air on the air outlet side. In addition, the first end of the flexible member 2 is connected to the air inlet side of the blower structure 1, and the second end of the flexible member 2 is connected to the assembly structure of the fixed base 3. In this way, a relatively fixed connection can be achieved between the blower structure 1, the flexible member 2, and the fixed base 3. Furthermore, the flexible component 2 includes a deformable part 21 that can deform from any angle and in any direction. Therefore, after the blower structure 1, the flexible component 2, and the fixed base 3 are assembled, during use, the user can first position the fan by fixing the second side of the fixed base 3 to a platform such as the ground. Then, by rotating the deformable part 21 between the air inlet side of the blower structure 1 and the first side of the fixed base 3, the blower structure 1 can rotate 360°. The deformable part 21 can also be bent and adjusted to allow the blower structure 1 to move up and down along the circumference of the fan. Simultaneously, the deformable part 21 can be swung up and down to allow the blower structure 1 to swing up and down. Therefore, this embodiment of the invention allows for adjustment of the blowing direction of the blower structure 1 in both angle and direction simply by adjusting the deformable part 21 without moving the fan. This not only eliminates the need for significant physical exertion but also provides flexible adjustment, allowing users to adjust the blowing direction in multiple directions according to their actual needs, thus meeting diverse requirements and improving the user experience.

[0028] For example, the flexible component 2 can be a flexible tube made of silicone material, which can be connected to the blower structure 1 and the mounting base, and can also be deformed arbitrarily.

[0029] Furthermore, in some embodiments, the air inlet side includes a mounting platform 11 and a mounting structure 12 disposed on the mounting platform 11, with the first end detachably connected to the mounting structure 12.

[0030] Specifically, the air-blowing structure 1 can be a fan head with blades or a fan head without blades. The first end of the flexible member 2 and the mounting structure 12 of the air-blowing structure 1 are detachably connected. This configuration allows users to easily replace the fan head with different specifications and power levels as needed, thus achieving a superior air-blowing experience. Furthermore, in some specific embodiments, the air-blowing structure 1 is equipped with a switch and a speed control, which can be button control, knob control, or touchscreen control, etc. The switch controls the fan's on / off state, and the speed control allows for adjustment of the airflow intensity as required.

[0031] In some embodiments, the first end and the mounting structure 12 are integrally formed. This simplifies the assembly process.

[0032] In some specific embodiments, the blowing structure 1 can be a fan head with blades. The blowing structure 1 includes a first housing located on the air inlet side and a second housing located on the air outlet side. The first and second housings are detachably connected and enclose a receiving cavity. The fan blades are assembled inside the receiving cavity, which protects the fan blades from dust accumulation and prevents them from injuring people or objects when rotating. The mounting platform 11 protrudes from the side of the first housing opposite to the second housing. In this way, the first housing and the flexible component 2 can be assembled and connected, thereby achieving the assembly and connection of the entire blowing structure 1 and the flexible component 2.

[0033] Furthermore, in some specific embodiments, the mounting structure 12 includes a nut post disposed on the mounting platform 11 and a nut groove opened in the nut post, with the first end passing through the nut groove and the outer side of the first end abutting against the inner side of the nut groove.

[0034] Specifically, the blowing structure 1 can be a fan head. The flexible component 2 can be a flexible hose, therefore, the first end of the flexible component 2 is at one of the openings of the flexible hose. For most existing fan heads with blades, the fan head usually has a nut groove of a uniform specification on the air inlet side. By inserting one of the openings of the flexible hose into the nut groove, the outer side of the opening of the flexible hose abuts against the inner wall of the nut groove, thereby achieving the assembly connection between the flexible component 2 and the blowing structure 1. In this way, the flexible component 2 of this utility model embodiment can be applied to most existing common fan heads with blades, without the need for specially customized fan heads, thus improving practicality. In addition, the assembly relationship between the flexible component 2 and the blowing structure 1 is simple, and disassembly and connection are convenient, therefore, it can be replaced at any time during use, which is convenient.

[0035] Furthermore, in some specific embodiments, the mounting structure 12 includes a snap-fit ​​hole formed in the mounting platform 11, with the first end snapped into the snap-fit ​​hole.

[0036] Specifically, the flexible component 2 can be a flexible hose, therefore, the first end of the flexible component 2 is at one of the openings of the flexible hose. Alternatively, a snap-fit ​​hole can be directly provided on the mounting platform 11. This snap-fit ​​hole is a blind hole; by inserting one opening of the flexible hose into the snap-fit ​​hole on the mounting platform 11, the outer side of the flexible hose abuts against the hole wall, thus achieving the same assembly connection between the flexible component 2 and the blower structure 1. This method offers the advantages of simple assembly, easy disassembly and connection, and convenient replacement.

[0037] Understandably, in some specific embodiments, a snap-fit ​​post may protrude on the mounting platform 11, and a snap-fit ​​hole may be opened in the snap-fit ​​post. One of the tube ports of the hose can be inserted into the snap-fit ​​hole, which can also realize the assembly connection of the flexible part 2 and the blowing structure 1, which is convenient and will not be described in detail here.

[0038] In some other specific embodiments, a snap-fit ​​post may protrude from the mounting platform 11, which can be connected to one of the ports of the hose. That is, the snap-fit ​​post can be directly inserted into one of the ports of the hose, so that the inner side of the hose and the outer side of the snap-fit ​​post abut against each other. This can also realize the assembly connection of the flexible part 2 and the blowing structure 1, which is convenient and will not be described in detail here.

[0039] Furthermore, in some embodiments, the mounting structure 12 includes a protrusion extending from the mounting platform 11 and a first latch disposed on the protrusion, with a second latch disposed at the first end, the first latch being connected to the second latch. Through the connection of the first and second latches, the flexible component 2 and the blower structure 1 can also be assembled and connected, and the detachable connection method of the latch connection is simple and convenient.

[0040] Furthermore, in some specific embodiments, the first latch includes a slot formed on the periphery of the protrusion, and the second latch includes a protrusion protruding from the inner sidewall of the first end.

[0041] Specifically, the mounting platform 11 can be a plane parallel to the axial direction of the fan head, and a protrusion can be formed on the plane of the mounting platform 11, with a groove formed around the protrusion. The flexible component 2 can be a flexible hose, with one end of the flexible component 2 at one of the hose openings, and a protruding locking protrusion can be formed on the inner wall of one of the hose openings. During assembly, the hose opening with the locking protrusion can be fitted onto the outside of the protrusion, and the locking protrusion can be engaged with the groove, thereby realizing the assembly connection between the flexible component 2 and the blowing structure 1. The detachable connection method is simple and convenient.

[0042] Furthermore, in some specific embodiments, the first latch includes a latching protrusion protruding from the periphery of the protrusion, and the second latch includes a latching groove formed on the periphery of the first end.

[0043] Specifically, the mounting platform 11 can be a plane parallel to the axial direction of the fan head, and a protrusion can be protruding from the plane of the mounting platform 11, with a locking protrusion protruding around the protrusion. The flexible component 2 can be a flexible hose, with one end of the flexible component 2 at one of the hose openings, and a locking groove can be formed around the opening of the hose. During assembly, the opening of the hose with the locking groove can be fitted onto the outside of the protrusion, and the locking protrusion can be engaged with the locking groove, thereby realizing the assembly connection between the flexible component 2 and the blowing structure 1. The detachable connection method is simple and convenient.

[0044] Furthermore, in some specific embodiments, the fixed base 3 includes a base body 31 and a connecting rod 32 connected to the base body 31. The assembly structure is located at the end of the connecting rod 32 away from the base body 31, and the side of the base body 31 opposite to the connecting rod 32 is the second side.

[0045] Specifically, the connecting rod 32 extends along the axial direction of the fan, and the flexible component 2 can be assembled and connected to the base 31 via the connecting rod 32. An assembly structure can be provided at the end of the connecting rod 32 away from the base 31, allowing the second end of the flexible component 2 to be connected to the end of the connecting rod 32 away from the base 31, thereby achieving the assembly connection between the flexible component 2 and the connecting rod 32, and consequently, the assembly connection between the flexible component 2 and the base 31. Additionally, the side of the base 31 facing away from the connecting rod 32 can be used to contact a platform such as the ground for positioning.

[0046] Furthermore, in some specific embodiments, the assembly structure includes a limiting post disposed on the periphery of the connecting rod 32, and a limiting groove is formed on the periphery of the second end, with the limiting post connected to the limiting groove.

[0047] Specifically, the flexible component 2 can be a flexible hose. Therefore, the first end of the flexible component 2 is at one of the openings of the flexible hose, and the second end of the flexible component 2 is at the other opening of the flexible hose. In some implementations, the assembly structure can be a limiting post located on the outer periphery of the connecting rod 32. During assembly, the opening of the flexible hose with a limiting groove is fitted onto the connecting rod 32, and the limiting groove at the second end is connected to the limiting post on the outer periphery of the connecting rod 32, thereby achieving the assembly connection of the blower structure 1 and the flexible component 2, which is convenient to operate. In some implementations, the connecting rod 32 is a hollow structure, and the assembly structure can be a limiting post located on the inner wall of the connecting rod 32. During assembly, the opening of the flexible hose with a limiting groove is inserted into the connecting rod 32, and the limiting groove at the second end is connected to the limiting post on the inner wall of the connecting rod 32, thereby achieving the assembly connection of the blower structure 1 and the flexible component 2, which is convenient to operate.

[0048] Furthermore, in some specific embodiments, the assembly structure includes a limiting groove formed on the periphery of the connecting rod 32, and a limiting post provided on the periphery of the second end, the limiting post being connected to the limiting groove.

[0049] Specifically, the flexible component 2 can be a flexible hose. Therefore, the first end of the flexible component 2 is at one of the openings of the flexible hose, and the second end of the flexible component 2 is at the other opening of the flexible hose. In some implementations, the assembly structure can be a limiting post located on the outer periphery of the second end, and the connecting rod 32 is a hollow structure. During assembly, the opening of the flexible hose with the limiting post is inserted into the connecting rod 32, and the limiting post on the outer periphery of the second end is connected to the limiting groove of the connecting rod 32, thereby realizing the assembly connection of the blower structure 1 and the flexible component 2, which is convenient to operate. In some implementations, the assembly structure can be a limiting post located on the inner wall of the second end. During assembly, the opening of the flexible hose with the limiting post is sleeved on the outside of the connecting rod 32, and the limiting post on the inner wall of the second end is connected to the limiting groove of the connecting rod 32, thereby realizing the assembly connection of the blower structure 1 and the flexible component 2, which is convenient to operate.

[0050] Furthermore, in some specific embodiments, the connecting rod 32 includes a telescopic rod and an operating key, the operating key being used to adjust the length of the telescopic rod. Thus, the fan can not only move the blowing structure 1 up and down along the fan axis by adjusting the deformable portion 21 of the flexible member 2, but also by changing the length of the telescopic rod. When the length of the telescopic rod is adjusted, the distance between the flexible member 2 and the base 31, and between the flexible member 2 and the ground, can be changed, thereby also enabling the blowing structure 1 to move up and down along the fan axis.

[0051] Furthermore, in some specific embodiments, the fixed base 3 also includes a plurality of legs 33 spaced apart along the circumference of the base body 31. The legs 33 are connected to the base body 31 and can be folded or unfolded relative to the base body 31.

[0052] Specifically, the support leg 33 is rotatably connected to the base 31, allowing the support leg 33 to be folded and unfolded relative to the base 31. When several support legs 33 are unfolded, they are positioned on the side of the base 31 away from the connecting rod 32. Thus, one end of the support leg 33 can rest against the ground or other platform for positioning, while the other end can support the base 31, connecting rod 32, flexible component 2, and blowing structure 1. By changing the degree of unfolding of the support leg 33, the overall axial height of the fan can be altered, thereby improving the stability of the fixed base 3.

[0053] In some implementations, the side of the support leg 33 facing away from the connecting rod 32 is a plane. This allows the support leg 33 to be fully extended, so that the plane of the support leg 33 contacts and adheres to the ground or other platforms, thereby improving the stability of the fixed base 3.

[0054] Understandably, the present invention does not specifically limit the number of legs 33. For example, in some embodiments, there may be 8 legs 33, making the fixing seat 3 an 8-claw fixing seat 3. In some embodiments, there may be 6 legs 33, making the fixing seat 3 a 6-claw fixing seat 3.

[0055] For example, the mounting base 3 can be made of alloy material.

[0056] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0057] The above is a description of the technical solution provided by this utility model. For those skilled in the art, based on the idea of ​​the embodiments of this utility model, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A fan capable of 360° rotation, characterized in that, include: A blowing structure having opposing air inlet and air outlet sides; A flexible component has a first end, a second end, and a deformable portion connecting the first end and the second end, wherein the first end is connected to the air inlet side; The mounting base has a first side and a second side opposite to each other. The first side is provided with an assembly structure, and the second end is connected to the assembly structure. The second side is used for positioning.

2. The fan according to claim 1, characterized in that, The air inlet side includes a mounting platform and a mounting structure disposed on the mounting platform, wherein the first end is detachably connected to the mounting structure.

3. The fan according to claim 2, characterized in that, The mounting structure includes a nut post disposed on the mounting platform and a nut groove formed in the nut post, wherein the first end passes through the nut groove and the outer side of the first end abuts against the inner side of the nut groove.

4. The fan according to claim 2, characterized in that, The mounting structure includes a snap-fit ​​hole formed in the mounting platform, and the first end snaps into the snap-fit ​​hole.

5. The fan according to claim 2, characterized in that, The mounting structure includes a protrusion protruding from the mounting platform and a first buckle disposed on the protrusion, the first end of which is provided with a second buckle, and the first buckle is connected to the second buckle.

6. The fan according to claim 5, characterized in that, The first buckle includes a slot formed on the periphery of the protrusion, and the second buckle includes a protrusion protruding from the inner sidewall of the first end; Alternatively, the first buckle includes a buckle protruding from the periphery of the protrusion, and the second buckle includes a buckle groove formed on the periphery of the first end.

7. The fan according to claim 1, characterized in that, The fixed base includes a base body and a connecting rod connected to the base body. The assembly structure is located at the end of the connecting rod away from the base body, and the side of the base body opposite to the connecting rod is the second side.

8. The fan according to claim 7, characterized in that, The assembly structure includes a limiting post disposed on the periphery of the connecting rod, and a limiting groove is formed on the periphery of the second end, with the limiting post connected to the limiting groove; Alternatively, the assembly structure includes a limiting groove formed on the periphery of the connecting rod, and a limiting post provided on the periphery of the second end, the limiting post being connected to the limiting groove.

9. The fan according to claim 7, characterized in that, The connecting rod includes a telescopic rod and an operating key, the operating key being used to adjust the length of the telescopic rod.

10. The fan according to claim 7, characterized in that, The fixed base also includes a number of legs spaced apart along the circumference of the base body. The legs are connected to the base body and can be folded or unfolded relative to the base body.