Telescopic folding fan with anti-collision function

Abstract

The application discloses a telescopic folding fan with a head-shaking anti-collision function and relates to the technical field of fans. The fan comprises a base assembly, a fan head assembly, a telescopic connecting piece and a head-shaking mechanism. The base shell comprises a base platform part and a step part arranged at the bottom of the front side of the base platform part. The head-shaking mechanism is arranged in the base platform part and is used for driving the telescopic connecting piece and the fan head assembly to rotate together. The step part is internally provided with an inductive device of a signal connection controller. The fan head cover is internally provided with a trigger device. When the fan head assembly is folded by swinging forward and the telescopic connecting piece is shortened, the side wall of the fan head cover is abutted against the step part, the trigger device triggers the inductive device, and the controller immediately prohibits the head-shaking mechanism from starting an instruction of responding to other control commands. The application realizes double protection of physical limiting and electric control locking, can automatically trigger and release the anti-collision locking, does not need manual unlocking operation, effectively avoids fan head collision damage caused by misoperation, and improves the product use safety and convenience.

Description

Technical Field

[0001] This invention relates to the field of fan-related technology, and in particular to a telescopic folding fan with oscillation and anti-collision function. Background Technology

[0002] With the development of portable fan technology, multifunctional fans that combine oscillation, folding, and telescopic functions are widely used due to their flexibility and ease of storage and carrying. For example, Chinese utility model patent CN216077678U discloses a user-friendly fan, including a base, a support rod, a fan body, and a drive structure located within the base. The drive structure includes a rotating base, a drive block, and a drive motor. The bottom end of the support rod is fixed to the rotating base, and the drive motor drives the rotating base to rotate via the drive block to achieve the oscillation function. The support rod adopts a pull-out telescopic design, and the connecting part on the back of the fan body is hinged to the top of the support rod to achieve folding. After folding, it is mechanically secured by a hook on the base and a locking hole on the front of the fan body. This design prevents the fan body from easily rotating when folded. When the fan needs to be used, pressing the pressing part moves the hook, disengaging it from the locking hole, allowing the fan body to rotate and unfold relative to the base.

[0003] While existing technologies have achieved oscillation, folding, and telescopic functions for fans, they still have the following drawbacks: First, in the folded storage state, if the user forgets to turn off the oscillation function or accidentally touches the oscillation switch, the oscillation mechanism will continue to drive the fan head assembly to rotate, causing interference and collision between the fan head and the base, or damage to the fan drive structure, or even causing a safety accident. Second, relying on a mechanical locking structure to fix the fan after folding is prone to wear and deformation due to long-term use and failure. Furthermore, it requires manual locking by the user, which is inconvenient. If not locked correctly, the folded fan head may still rotate and collide. Third, each time the fan is used in the folded state, the user needs to manually press the pressing part on the base to unlock the hook before unfolding the fan head, which is cumbersome. Moreover, if the telescopic rod is not extended to a safe height before activating the oscillation function after unlocking, collision problems will still occur, resulting in a poor user experience. Summary of the Invention

[0004] To overcome at least one of the aforementioned problems of existing telescopic folding fans, this invention proposes a telescopic folding fan with an oscillating anti-collision function, comprising a base assembly, a fan head assembly, and a telescopic connector. The fan head assembly is oscillatingly connected to the upper end of the telescopic connector, and the telescopic connector can move the fan head assembly along the telescopic direction when it retracts. The fan head assembly includes a fan head cover, the base assembly includes a base housing, the base housing includes a base platform and a stepped portion, the stepped portion is connected to the front bottom of the base platform and extends forward, and the fan head assembly also includes an oscillating mechanism disposed in the base platform of the base housing. The lower end of the telescopic connector passes through the base platform and connects to the oscillating mechanism. The oscillating mechanism is used to drive the telescopic connector and the fan head assembly to rotate together; it also includes a controller, a sensing device, and a triggering device. The sensing device is signal-connected to the controller. The sensing device is disposed in the stepped portion, and the triggering device is disposed in the fan head cover. The fan head assembly swings forward and folds to the front side of the telescopic connector. When the telescopic connector is shortened, it can move the fan head cover downwards, allowing the side wall of the fan head cover to abut against the stepped portion of the base housing. The triggering device approaches and triggers the sensing device. The sensing device sends a trigger signal to the controller. After receiving the trigger signal, the controller can prevent the oscillating mechanism from responding to other control commands, thereby preventing the fan head cover from colliding with the base housing.

[0005] The telescopic connector is movably connected to the base assembly and the fan head assembly at its upper and lower ends, respectively. Specifically, firstly, the upper end of the telescopic connector is rotatably connected to the fan head assembly. The upper end of the telescopic connector has a horizontally positioned top pivot, the central axis of which is perpendicular to the extension direction of the telescopic connector. The fan head assembly has a base plate connection hole on its wall that matches the top pivot. The fan head assembly can rotate around the central axis of the top pivot, allowing it to swing up and down, thus achieving different angles of airflow. Furthermore, the fan head assembly can rotate to the front of the telescopic connector, with the angle between it and the telescopic connector approaching zero degrees, at which point the fan head assembly and the telescopic connector are folded. Secondly, the lower end of the telescopic connector passes through the base and connects to the oscillating mechanism. Driven by the oscillating mechanism, the telescopic connector and the fan head assembly can rotate relative to the base assembly around the central axis of the telescopic connector, allowing the fan head assembly to oscillate.

[0006] The step portion, connected to the front bottom of the base portion and extending forward, refers to a manually set position of the step portion relative to the base portion. To allow the fan head cover to abut against the step portion when it moves downwards, when the fan head assembly and telescopic connector are folded, the fan head assembly is also located on the front side of the telescopic connector, i.e., on the same side as the step portion. In this way, when the fan head assembly moves downwards, the fan head cover will not collide or interfere with the base portion.

[0007] The prohibition of the oscillation mechanism from responding to other control commands includes the following: the fan also includes other devices that can send oscillation command signals to the controller, such as a control panel or wireless remote control connected to the controller. When the telescopic connector is extended, the fan head cover moves away from the step, i.e., the triggering device moves away from the sensing device. The control panel or wireless remote control can then send oscillation command signals to the controller, which can control the oscillation mechanism to oscillate. However, when the side wall of the fan head cover abuts against the step of the base housing, after receiving the trigger signal from the sensing device, the controller will disconnect or block the oscillation command signals sent to it by the control panel or wireless remote control, i.e., the controller will not control the oscillation mechanism to move.

[0008] According to the above technical solution, compared with the prior art, the beneficial technical effects of the present invention are as follows: First, by setting a sensing device and a triggering device in the base assembly and the fan head assembly respectively, when the telescopic rod is shortened to the point where the fan head cover is in contact with the base housing, the triggering device automatically triggers the sensing device. After receiving the signal, the controller immediately prohibits the oscillation mechanism from responding to any start command. This completely eliminates the problem of fan head collision with the base caused by misoperation from the circuit control level, effectively protects the core components of the fan, extends the product's service life, and improves the safety of use.

[0009] Secondly, it abandons the traditional manual mechanical hook fixing method. When the telescopic rod is shortened downwards, the side wall of the fan head cover will first abut against the step to form a physical limit. At the same time, the triggering device is precisely aligned with the sensing device and completes the triggering, realizing dual protection of physical limit and electronic locking. The triggering timing is completely synchronized with the low position of the fan head, with high triggering accuracy. Moreover, the physical limit of the step can serve as a backup protection in case of failure of electronic protection, greatly improving the reliability of anti-collision.

[0010] Third, when the user extends the telescopic rod to a safe height, the triggering device separates from the sensing device, the controller automatically releases the lock on the oscillation mechanism, and the fan resumes normal oscillation function; when storing, the anti-collision function automatically activates after the telescopic rod is shortened to its lowest position. The use of electronic induction triggering replaces the mechanical locking structure, completely solving the cumbersome operation of manually unlocking the hook required by existing technology, while also preventing accidental collisions caused by users forgetting to extend the telescopic rod.

[0011] Because of the above-mentioned features and advantages, this invention can be applied to telescopic folding fans with oscillation and anti-collision functions. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the fan's axial structure, showing the fan in its extended state; Figure 2 This is a schematic diagram of the fan's axial structure, showing the fan in its retracted and folded state; Figure 3 This is a schematic diagram of the exploded structure of a fan; Figure 4 This is a cross-sectional structural diagram of the fan; Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure along the AA direction; Figure 6 This is a schematic diagram of the axial side structure of the base assembly; Figure 7 This is an exploded structural diagram of the aforementioned head-shaking mechanism; Figure 8 This is a cross-sectional structural diagram of the swing mechanism; Figure 9 This is a schematic diagram of the axial side structure of the rear cover; Figure 10 This is a schematic diagram of the axial structure of the U-shaped substrate. Detailed Implementation

[0013] The structure of the telescopic folding fan with oscillating anti-collision function that applies the technical solution of the present invention will be further described below with reference to the accompanying drawings.

[0014] Except where explicitly stated that they are equivalent or alternative implementation schemes, the various implementation details disclosed below may be selectively applied or combined in one embodiment even if they are not directly related or synergistic in terms of function.

[0015] like Figures 1-10The image shows a telescopic folding fan with oscillation and anti-collision function. It includes a base assembly 1, a fan head assembly 2, and a telescopic connector 3. The fan head assembly 2 is oscillatingly connected to the upper end of the telescopic connector 3. When the telescopic connector 3 retracts, it can move the fan head assembly 2 along the retraction direction. The fan head assembly 2 includes a fan head cover 21. The base assembly 1 includes a base housing 11, which includes a base portion 111 and a step portion 112. The step portion 112 is connected to the front bottom of the base portion 111 and extends forward. It also includes an oscillation mechanism 4, which is disposed in the base portion 111 of the base housing 11. The lower end of the telescopic connector 3 passes through the base portion 111 and connects to the oscillation mechanism 4. The oscillation mechanism 4 drives the telescopic connector 3 and the fan head assembly 2. The mechanism rotates together; it also includes a controller 12, a sensor 13, and a triggering device 14. The sensor 13 is signal-connected to the controller 12 and is located in the step portion 112. The triggering device 14 is located in the fan head cover 21. The fan head assembly 2 swings forward and folds to the front of the telescopic connector 3. When the telescopic connector 3 is shortened, it can move the fan head cover 21 downwards, allowing the side wall of the fan head cover 21 to abut against the step portion 112 of the base housing 11. The triggering device 14 approaches and triggers the sensor 13. The sensor 13 sends a trigger signal to the controller 12. After receiving the trigger signal, the controller 12 can prevent the oscillating mechanism 4 from responding to other control commands, thereby preventing the fan head cover 21 from colliding with the base housing 11.

[0016] In this embodiment, the base assembly 1 is the main supporting component, which includes a base housing 11 and a movable support part 15. The base housing 11 is a fixed component, which includes a base part 111 and a step part 112. The step part 112 is disposed at the bottom of the front side wall of the base part 111, so that the base part 111 and the step part 112 are combined at different heights to form a step shape.

[0017] like Figure 2 The fan head assembly 2 shown includes a fan head cover 21, a fan head motor 22, and fan blades 23. The fan head cover 21 includes a front cover 211 and a rear cover 212, which can be combined to form a cover cavity. Multiple ventilation holes are provided on the two covers to allow air to pass through. The fan head motor 22 and the fan blades 23 are disposed in the cover cavity. The fan blades 23 can rotate forward or backward under the drive of the fan head motor 22 to achieve blowing or exhausting air.

[0018] The rear sidewall of the fan head cover 21 has a rearwardly protruding boss 213 in the middle region, forming a ring of cover steps 214 at the edge of the rear sidewall of the rear cover 212. When the sidewall of the fan head cover 21 abuts against the step 112 of the base housing 11, the boss 213 of the fan head cover 21 also rests on the base platform 111 of the base housing 11. To better fit the arc-shaped sidewall of the fan head cover 21, the top wall of the step 112 and the base platform 111 are concave arc-shaped. The lower sidewall and rear sidewall of the fan head cover 21 are supported by the base housing 11, making the fan more compact in the retracted state of the telescopic connector 3, resulting in a smaller overall size.

[0019] Furthermore, the movable support part 15 is an open ring shape. In practical applications, this open ring shape can be a circular ring, a square ring, or an irregularly shaped ring, specifically designed to fit the shape of the fan head cover 21. In this embodiment, the fan head cover 21 is frustum-shaped, and the movable support part 15 is an open ring shape. The two ends of the movable support part 15 are respectively rotatably connected to the left and right side walls of the base housing 11. The movable support part 15 can be rotated and unfolded to support the fan head assembly 2 and the telescopic connector 3 together with the base housing 11. The movable support part 15 can also be rotated and folded in the opposite direction into the cover step 214 of the rear cover 212, which makes the combined structure of the fan more compact when it is in the storage state.

[0020] The upper and lower ends of the telescopic connector 3 are respectively movably connected to the base assembly 1 and the fan head assembly 2. For example... Figure 2 As shown, the upper end of the telescopic connector 3 is rotatably connected to the fan head assembly 2. A horizontally positioned top rotating shaft 33 is provided at the upper end of the telescopic connector 3. The central axis of the top rotating shaft 33 is perpendicular to the extension direction of the telescopic connector 3. A receiving groove 215 is provided on the boss portion 213. A U-shaped base plate 24 is detachably connected to the receiving groove 215. Base plate connection holes 241 are provided on the two side walls of the U-shaped base plate 24. The telescopic connector 3 is rotatably connected to the U-shaped base plate 24 through the cooperation of the top rotating shaft 33 and the base plate connection holes 241. When the fan head assembly 2 rotates around the central axis of the top rotating shaft 33, the fan head assembly 2 can swing up and down or rotate 180 degrees, thereby achieving different angles of airflow. Furthermore, since the U-shaped base plate 24 has a recessed cavity, and the telescopic connector 3 can be stored in the cavity of the U-shaped base plate 24 when it rotates towards the fan head cover 21.

[0021] To facilitate the connection between the U-shaped substrate 24 and the rear cover 212, such as Figure 9 and Figure 10As shown, a plug-in interface 216 is provided at one end of the bottom of the storage groove 215 of the rear cover 212, and a fastening hole 217 and a screw hole are provided at the other end. A plug-in foot 242 is provided at one end of the bottom plate of the U-shaped base plate 24, and a movable buckle 243 is provided at the other end. When the U-shaped base plate 24 is connected to the rear cover 212, the plug-in foot 242 is plugged into the plug-in interface 216, the movable buckle 243 is fastened into the fastening hole 217, and then the screw is passed through the screw hole to connect to the U-shaped base plate 24. This connection structure is convenient for installation and disassembly and the connection is stable.

[0022] In this embodiment, the oscillation mechanism 4 is not triggered by other control commands. This means that the fan also includes other devices that can send oscillation command signals to the controller 12. In this embodiment, a control panel 16 connected to the controller 12 is provided on the movable support 15, and the control panel 16 is provided with an oscillation switch button. Of course, in other embodiments, a wireless remote control device connected to the controller 12 is also included, which can also control the oscillation mechanism 4. In actual use, when the telescopic connector 3 is extended, the fan head cover 21 is away from the step 112. The oscillation command signal can be sent to the controller 12 through the control panel 16 or the wireless remote control device. After receiving the oscillation command, the controller 12 can control the oscillation mechanism 4 to move to achieve oscillation. However, when the side wall of the fan head cover 21 abuts against the step portion 112 of the base housing 11, after the controller 12 receives the trigger signal, the controller 12 will disconnect or block the head-shaking command signal issued to the controller 12 by the control panel 16 or the wireless remote control device, that is, the controller 12 will not control the head-shaking mechanism 4 to move.

[0023] The advantages of this design are that upon receiving a signal, the controller 12 immediately prevents the oscillation mechanism 4 from responding to any start commands, completely eliminating the problem of fan head collision with the base caused by misoperation from the circuit control level. This effectively protects the core components of the fan, extends the product's service life, and improves safety. Furthermore, when the telescopic rod is shortened, the side wall of the fan head cover 21 first abuts against the step 112 to form a physical limit. Simultaneously, the trigger device 14 aligns perfectly with the sensing device 13 and completes the triggering, achieving dual protection of physical limit and electronic locking. The physical limit of the step 112 can also serve as backup protection in case of electronic control failure, significantly improving anti-collision reliability. Secondly, when the user extends the telescopic rod to a safe height, the trigger device 14 moves away from the sensing device 13, and the controller 12 automatically releases the lock on the oscillation mechanism 4, restoring the fan to normal oscillation function. Using an electronic induction triggering method instead of a mechanical locking structure completely solves the cumbersome operation of manually unlocking the hook required in existing technologies, while also avoiding accidental collisions caused by users forgetting to extend the telescopic rod.

[0024] like Figures 6-8 As shown, the oscillating mechanism 4 includes a fixed base 41 and a driving device 42. The fixed base 41 is fixedly connected to the base housing 11, and the driving device 42 is connected to the fixed base 41. The base housing 11 is provided with a base through hole 113, and the fixed base 41 is provided with a base through hole 411. The lower end of the telescopic connector 3 passes through the base through hole 113 and rotatably passes through the base through hole 411. The oscillating mechanism 4 also includes an upper flange 43 and a lower flange 44, which are fixedly connected to the telescopic connector 41. The lower end of the telescopic connector 3 is fitted with the upper flange 43 and the lower flange 44 respectively at the upper and lower ends of the base through hole 411. The lower flange 44 includes an arc-shaped rack 45. The driving device 42 includes a drive motor 421 and a drive gear 422. The drive gear 422 is meshed with the arc-shaped rack 45. The drive motor 421 drives the drive gear 422 to rotate in the forward or reverse direction. The drive gear 422 then drives the lower flange 44, the upper flange 43, the telescopic connector 3, and the fan head assembly 2 to rotate together through the arc-shaped rack 45. First, the base through hole 411 and the base through hole 113 are arranged coaxially and vertically spaced. The lower end of the telescopic connector 3 is simultaneously rotatably connected to the base through hole 411 and the base through hole 113. This is equivalent to providing two connecting supports for the telescopic connector 3, which helps to ensure the connection stability between the telescopic connector 3 and the base assembly 1. In addition, the lower end of the telescopic connector 3 is connected by the upper flange 43 and the lower flange 44. The upper flange 43 and the lower flange 44 have high machining accuracy and good wear resistance, which further adapts to the gap between the telescopic connector 3 and the base through hole 411. This not only allows the telescopic connector 3 to rotate smoothly back and forth, but also effectively solves the problem of the telescopic connector 3 shaking when rotating.

[0025] The fixed base 41, upper flange 43 and lower flange 44 are all made of POM or nylon. Since this material has good dimensional stability, self-lubrication and wear resistance, it not only improves the connection stability of the fixed base 41, upper flange 43 and lower flange 44, but also helps the rotational stability of the gear and rack.

[0026] The telescopic connector 3 and the fan head assembly 2 have a certain weight. To allow the telescopic connector 3 and the fan head assembly 2 to rotate smoothly together, the upper flange 43 includes an upper bushing 431 and an upper flange 432. The upper bushing 431 is inserted into the base through hole 411. The upper flange 432 extends outward from the upper edge of the upper bushing 431 and is arranged above the fixed base 41. It also includes rollers 433, which are rotatably disposed between the upper flange 432 and the fixed base 41. In this embodiment, the upper flange 432 of the upper flange 43 is provided with a plurality of circular recesses 434. The circular recesses 434 are evenly spaced circumferentially. The rollers 433 are rotatably disposed in the circular recesses 434, and at least a portion of the rollers 433 protrude downwards and protrude outside the circular recesses 434 and can roll on the fixed base 41. By setting the rolling connection structure of roller 433, the rotational resistance between the upper flange 43 and the fixed base 41 is effectively reduced, ensuring the smooth rotation of the telescopic connector 3 and the fan head assembly 2.

[0027] The lower flange 44 includes a lower bushing 441 and a lower flange 442. The lower bushing 441 is inserted into the through hole 411 of the base. The lower flange 442 extends outward from the lower end edge of the lower bushing 441 and is arranged below the fixed base 41. The arc-shaped rack 45 is disposed on the lower flange 442. Since the oscillation angle of the fan is generally limited to 80°~120°, the arc-shaped rack 45 only needs to be made into a protruding rack with an arc length corresponding to the oscillation angle.

[0028] To facilitate control of the fan oscillation angle, and in conjunction with the partially protruding arc-shaped rack 45 structure, the bottom wall of the fixed base 41 is provided with a horizontal annular groove 412. The arc-shaped rack 45 of the lower flange 44 is movably arranged in the horizontal annular groove 412. The two end sidewalls of the horizontal annular groove 412 can limit the angle at which the lower flange 44, upper flange 43, telescopic connector 3, and fan head assembly 2 rotate together.

[0029] Furthermore, the telescopic connector 3 includes a rod body 31 and a bottom connector 32. The bottom connector 32 includes a first sleeve 321 and a second sleeve 322 connected together. The lower end of the rod body 31 is connected to the first sleeve 321. The outer diameter of the first sleeve 321 is larger than the outer diameter of the second sleeve 322, thus forming a connector step at the connection. The upper flange 43 and the lower flange 44 are sleeved on the second sleeve 322. The upper flange 43 is disposed above the lower flange 44, and the upper flange 43's upper flange edge 432 abuts against the connector step. In this embodiment, a protruding positioning post 323 is also provided on the connector step. A positioning hole 435 is provided on the upper flange edge 432 of the upper flange 43. The upper flange 43 can rotate together with the bottom connector 32 through the engagement of the positioning hole 435 and the positioning post 323.

Claims

1. A telescopic folding fan with oscillation and anti-collision function, comprising a base assembly, a fan head assembly, and a telescopic connector, wherein the fan head assembly is oscillatingly connected to the upper end of the telescopic connector, and the telescopic connector can move the fan head assembly along the telescopic direction when it performs telescopic movements. Its features are, The fan head assembly includes a fan head cover, and the base assembly includes a base housing, the base housing including a base portion and a step portion, the step portion being connected to the front bottom of the base portion and extending forward; it also includes an oscillating mechanism, the oscillating mechanism being disposed in the base portion of the base housing, the lower end of the telescopic connector passing through the base portion and connected to the oscillating mechanism, the oscillating mechanism being used to drive the telescopic connector and the fan head assembly to rotate together; It also includes a controller, a sensing device, and a triggering device. The sensing device is signal-connected to the controller and is located in the stepped portion. The triggering device is located in the fan head cover. The fan head assembly swings forward and folds to the front of the telescopic connector. When the telescopic connector is shortened, it can move the fan head cover downwards, allowing the side wall of the fan head cover to abut against the stepped portion of the base housing. The triggering device approaches and triggers the sensing device. The sensing device sends a trigger signal to the controller. After receiving the trigger signal, the controller can prevent the oscillating mechanism from responding to other control commands, thereby preventing the fan head cover from colliding with the base housing.

2. The telescopic folding fan with oscillation and anti-collision function according to claim 1, characterized in that, The rear side wall of the fan head cover has a rearward protruding boss in the middle area, and the edge of the rear side wall of the fan head cover forms a ring of cover steps; when the side wall of the fan head cover abuts against the step of the base housing, the boss of the fan head cover rests on the base platform of the base housing.

3. The telescopic folding fan with oscillation and anti-collision function according to claim 2, characterized in that, The base assembly also includes a movable support part, which is an open ring shape. The two ends of the movable support part are rotatably connected to the base housing. The movable support part can be rotated and unfolded to support the fan head assembly and telescopic connector together with the base housing. The movable support part can also be rotated and folded into the cover steps of the fan head cover.

4. The telescopic folding fan with oscillation and anti-collision function according to claim 3, characterized in that, The boss portion is provided with a storage groove, and a U-shaped substrate is detachably connected to the storage groove. The two side walls of the U-shaped substrate are provided with substrate connection holes. The top of the telescopic connector is provided with a horizontally placed top pivot. The telescopic connector is rotatably connected to the U-shaped substrate through the cooperation of the top pivot and the substrate connection hole, and the telescopic connector can be rotatably stored in the cavity of the U-shaped substrate.

5. The telescopic folding fan with oscillation and anti-collision function according to any one of claims 1 to 4, characterized in that, The oscillating mechanism includes a fixed base and a driving device. The fixed base is fixedly connected to the base housing, and the driving device is connected to the fixed base. The base housing has a base through hole, and the fixed base has a base through hole. The lower end of the telescopic connector passes through the base through hole and rotatably passes through the base through hole. The oscillating mechanism also includes an upper flange and a lower flange. The upper flange and the lower flange are fixedly connected to the lower end of the telescopic connector, and the upper flange and the lower flange are respectively sleeved on the upper and lower ends of the base through hole. The lower flange includes an arc-shaped rack. The driving device includes a drive motor and a drive gear. The drive gear is meshed with the arc-shaped rack. The drive motor drives the drive gear to rotate in the forward or reverse direction, and the drive gear in turn drives the lower flange, the upper flange, the telescopic connector, and the fan head assembly to rotate together.

6. The telescopic folding fan with oscillation and anti-collision function according to claim 5, characterized in that, The upper flange includes an upper bushing and an upper flange. The upper bushing is inserted into the through hole of the base. The upper flange extends outward from the upper end edge of the upper bushing and is arranged above the fixed base. It also includes a roller, which is rolled between the upper flange and the fixed base. The lower flange includes a lower bushing and a lower flange. The lower bushing is inserted into the through hole of the base. The lower flange extends outward from the lower end edge of the lower bushing and is arranged below the fixed base. The arc-shaped rack is arranged on the lower flange.

7. The telescopic folding fan with oscillation and anti-collision function according to claim 6, characterized in that, The upper flange has a plurality of circular recesses on its upper flange edge. The circular recesses are evenly spaced along the circumference. The rollers are rolled in the circular recesses, and at least a portion of the rollers protrude downwards and protrude outside the circular recesses and can roll on the fixed base.

8. The telescopic folding fan with oscillation and anti-collision function according to claim 5, characterized in that, The bottom wall of the fixed base is provided with a horizontal annular groove, and the arc-shaped rack of the lower flange is movably arranged in the horizontal annular groove. The two end sidewalls of the horizontal annular groove can limit the angle at which the lower flange, upper flange, telescopic connector and fan head assembly rotate together.

9. The telescopic folding fan with oscillation and anti-collision function according to claim 5, characterized in that, The telescopic connector includes a rod and a bottom joint. The bottom joint includes a first sleeve and a second sleeve connected to each other. The lower end of the rod is connected to the first sleeve. The outer diameter of the first sleeve is larger than the outer diameter of the second sleeve, thus forming a joint step. The upper flange and the lower flange are sleeved on the outside of the second sleeve. The upper flange is located above the lower flange, and the upper flange abuts against the joint step.

10. The telescopic folding fan with oscillation and anti-collision function according to claim 5, characterized in that, The fixed base, upper flange, and lower flange are all made of POM or nylon.

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