fan

Abstract

An embodiment of the present invention relates to the technical field of household appliances, and in particular to a fan, which includes a rotatable fan base, a sliding assembly and a plurality of fan blades corresponding to the number of the sliding assemblies, and the sliding assemblies are arranged along the circumference of the fan base; the sliding assembly includes a sliding mechanism, which is slidably connected to the fan base, and the sliding mechanism can be moved in a direction away from the fan base under the action of centrifugal force during the rotation of the fan base; the fan blades are rotatably connected to the end of the sliding mechanism away from the fan base, and the fan blades can rotate during the movement of the sliding mechanism to increase the fan's wind cutting radius. Compared with traditional fans that only have fan blades for expansion, the fan's wind cutting radius is increased under the same overall machine size, thereby providing a larger air volume. At the same time, since the sliding mechanism relies on centrifugal force to move, the expansion distance at different speeds is also different, thereby being able to adapt to different air volume requirements.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of household electrical appliances, and in particular to a fan. Background Art

[0002] Existing fans or fan light products on the market are divided into two categories: fixed blades and retractable invisible blades. For fans with retractable blades, since the blades need to be hidden in the fan chassis after being retracted, the design size of the blades is limited. The blades are small in size, resulting in a small amount of air generated by the fan, which is difficult to meet user needs. Summary of the Invention

[0003] In order to solve the above technical problem or at least partially solve the above technical problem, an embodiment of the present invention provides a fan.

[0004] An embodiment of the present invention provides a fan, comprising a rotatable fan base, a sliding assembly, and a plurality of fan blades corresponding to the number of the sliding assemblies, wherein the sliding assemblies are arranged along the circumference of the fan base;

[0005] The sliding assembly includes a sliding mechanism, which is slidably connected to the fan base, and can be moved in a direction away from the fan base under the action of centrifugal force during the rotation of the fan base;

[0006] The fan blade is rotatably connected to one end of the sliding mechanism away from the fan base. The fan blade can rotate during the movement of the sliding mechanism, so that the wind cutting radius of the fan is increased by the sliding mechanism and the fan blade.

[0007] Optionally, the fan base has a plurality of sliding grooves corresponding to the number of the sliding components, the sliding mechanism is connected to the sliding grooves in a one-to-one correspondence, and all the sliding grooves are arranged along the circumference of the fan base.

[0008] Optionally, the fan further includes a first elastic member for providing elastic restoring force to the sliding mechanism, and the first elastic member is arranged between the sliding mechanism and the sliding slot.

[0009] Optionally, a sliding track is formed on the sliding groove, and a slider matching the sliding track is provided on the sliding mechanism, and the sliding track extends in a direction away from the fan base;

[0010] The included angles between the sliding rails on two adjacent sliding grooves are the same.

[0011] Optionally, an abutment block extending toward the sliding mechanism is further provided at one end of the sliding rail away from the fan base. When the sliding mechanism slides relative to the fan base to the end of the sliding rail away from the fan base, the slider abuts against the abutment block.

[0012] Optionally, the sliding mechanism includes a sliding bar, and the bottom surface of the sliding bar is tilted along the wind cutting direction of the fan.

[0013] Optionally, the fan further includes a synchronization component, which is arranged between the fan base and the sliding mechanism to enable all the sliding mechanisms to move synchronously.

[0014] Optionally, the synchronization assembly includes a synchronization turntable and a plurality of connecting members corresponding to the number of the sliding mechanisms, the synchronization turntable is rotationally connected to the fan base, and two ends of the connecting member are rotationally connected to the synchronization turntable and the sliding mechanism respectively;

[0015] Alternatively, the synchronization component includes a synchronization turntable, which is rotatably connected to the fan base, and the synchronization turntable is provided with limiting grooves corresponding to the number of the sliding mechanisms, and each of the sliding mechanisms is provided with a first limiting column, and the first limiting column on each of the sliding mechanisms is slidably connected to one of the limiting grooves.

[0016] Optionally, the sliding assembly further includes a rotating mechanism, and the fan blade is rotationally connected to the sliding mechanism via the rotating mechanism;

[0017] The rotating mechanism is in transmission connection with the fan base, so that when the sliding mechanism moves relative to the fan base, the rotating mechanism is driven by the fan base to rotate, so that the fan blades rotate relative to the sliding mechanism to unfold.

[0018] Optionally, the rotating mechanism includes at least one gear, the fan blade is provided on the gear, and the gear is rotationally connected to the sliding mechanism;

[0019] The fan base is provided with a rack for meshing with the gear, and the rack extends along the moving direction of the sliding mechanism.

[0020] Optionally, the number of the gears is at least two, at least two of the gears are meshed in sequence, and, among all the gears, the gear at one end is meshed with the rack, and the gear at the other end is rotationally connected to the sliding mechanism.

[0021] Optionally, the sliding mechanism includes a sliding bar, the rotating mechanism is arranged on a side of the sliding bar away from the fan base, an arc-shaped limiting groove is provided on a surface of the sliding bar corresponding to the rotating mechanism, the rotating mechanism has a second limiting column slidably connected to the arc-shaped limiting groove, and the arc center of the arc-shaped limiting groove is located on the rotation axis of the rotating mechanism;

[0022] When the second limiting post slides to one end of the arc-shaped limiting slot, the fan blades are in a retracted state, and when the second limiting post slides to the other end of the arc-shaped limiting slot, the fan blades are in a fully extended state.

[0023] Optionally, the sliding assembly further includes a rotating member;

[0024] The fan blades are rotatably connected to the sliding mechanism via the rotating member, so that the fan blades can be rotated relative to the sliding mechanism under the action of centrifugal force to be unfolded during the rotation of the fan base.

[0025] Optionally, the sliding assembly further includes a second elastic member for providing elastic restoring force to the rotating member, and the second elastic member is arranged between the sliding mechanism and the rotating member.

[0026] Optionally, a mounting post is provided on the sliding mechanism, and the rotating member is coaxially arranged with the mounting post and is rotatably connected thereto;

[0027] The second elastic member is a torsion spring arranged between the sliding mechanism and the rotating member.

[0028] Optionally, the sliding mechanism includes a sliding bar, the rotating member is arranged on a side of the sliding bar away from the fan base, an arc-shaped limiting groove is provided on a surface of the sliding bar corresponding to the rotating member, the rotating member has a limiting column slidably connected to the arc-shaped limiting groove, and the arc center of the arc-shaped limiting groove is located on the rotation axis of the rotating member;

[0029] When the limiting post slides to one end of the arc-shaped limiting groove, the fan blades are in a retracted state, and when the limiting post slides to the other end of the arc-shaped limiting groove, the fan blades are in a fully extended state.

[0030] The technical solution provided by the embodiment of the present invention has the following advantages compared with the prior art:

[0031] The fan provided by an embodiment of the present invention arranges sliding assemblies corresponding to the number of fan blades so that all sliding assemblies are arranged along the circumference of the fan base. The sliding assembly includes a sliding mechanism, and the fan blades are rotatably connected to the end of the sliding mechanism away from the fan base. After the fan is started, the sliding mechanism can rely on the centrifugal force it receives to drive the fan blades to move in a direction away from the fan base, and at the same time, the fan blades rotate and expand, so that both the sliding mechanism and the fan blades can cut the wind. Compared with the traditional fan that only sets the fan blades for expansion, the fan's wind cutting radius is increased under the same overall machine size, thereby providing a larger air volume. At the same time, since the sliding mechanism relies on centrifugal force to move, the centrifugal force applied to the sliding mechanism is different at different rotation speeds, and the expansion distance is also different, so that by setting different rotation speeds, the sliding mechanism and the fan blades can expand to different sizes to adapt to different air volume requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the embodiments of the present invention.

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0034] Figure 1 This is a schematic exploded view of the structure of the fan according to the first embodiment of the present invention;

[0035] Figure 2 This is a structural schematic diagram of a fan base of a fan according to Embodiment 1 of the present invention;

[0036] Figure 3 This is a structural diagram of a fan base according to another configuration method of the first embodiment of the present invention;

[0037] Figure 4 This is a structural diagram of a synchronous assembly of a fan according to the first embodiment of the present invention;

[0038] Figure 5 This is a structural diagram of a synchronization component according to another configuration method described in Embodiment 1 of the present invention;

[0039] Figure 6 This is a structural schematic diagram of a sliding assembly of a fan according to the first embodiment of the present invention;

[0040] Figure 7 This is a schematic exploded view of the structure of the sliding assembly of the fan according to the first embodiment of the present invention;

[0041] Figure 8 This is a schematic structural diagram of the sliding groove and sliding assembly after installation according to the first embodiment of the present invention;

[0042] Figure 9 This is a schematic structural diagram of the fan in the retracted state according to the first embodiment of the present invention;

[0043] Figure 10 This is a schematic structural diagram of the fan according to the first embodiment of the present invention in a fully expanded state;

[0044] Figure 11 This is an exploded schematic diagram of the structure of the fan according to the second embodiment of the present invention;

[0045] Figure 12 This is a structural diagram of a sliding assembly of a fan according to a second embodiment of the present invention;

[0046] Figure 13 This is a schematic structural diagram of the fan in a retracted state according to the second embodiment of the present invention;

[0047] Figure 14 This is a structural schematic diagram of the fan according to the second embodiment of the present invention in a fully expanded state.

[0048] Among them, 1. Fan base; 11. Connection hole; 12. Chassis; 13. Sliding groove; 131. Abutment block; 132. Limiting protrusion; 14. Rack; 2. Sliding assembly; 21. Sliding mechanism; 211. First limiting column; 212. Upper cover; 213. Bottom plate; 214. Sliding block slope; 215. Lower cover; 22. Rotating mechanism; 221. First gear; 222. Second gear; 223. Third gear; 224. Fourth gear; 225, fifth gear; 225a, mounting protrusion; 226, second limiting column; 227, second arc-shaped limiting groove; 23, rotating member; 24, second elastic member; 3, fan blade; 4, driving motor; 41, motor shaft; 5, fixed connecting member; 6, slider strip; 7, first elastic member; 8, synchronization assembly; 81, synchronization turntable; 811, limiting slide groove; 812, first arc-shaped limiting groove; 82, connecting member. DETAILED DESCRIPTION

[0049] In order to more clearly understand the above-mentioned purposes, features and advantages of the embodiments of the present invention, the solutions of the embodiments of the present invention will be further described below. It should be noted that the embodiments of the embodiments of the present invention and the features therein can be combined with each other without conflict.

[0050] In the following description, many specific details are set forth to facilitate a full understanding of the embodiments of the present invention, but the embodiments of the present invention may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, not all of them.

[0051] For fans with retractable fan blades currently on the market, since the fan blades need to be hidden in the fan chassis after being retracted, the design size of the fan blades is limited. The fan blades are small in size, resulting in a small amount of air that can be generated by the fan, which is difficult to meet user needs.

[0052] To address the above-mentioned drawbacks, an embodiment of the present invention provides a fan that provides a sliding mechanism to enable a sliding connection between the fan blades and the fan base. This allows the sliding mechanism to slide out after the fan is started, simultaneously cutting the air with the fan blades. Thus, the sliding mechanism and the fan blades simultaneously form a fan cutting structure, thereby increasing the fan's cutting radius and improving the fan's air volume. Specifically, the structural arrangement of the fan is described below.

[0053] Example 1

[0054] like Figure 1-10 As shown, this embodiment provides a fan, which includes a rotatable fan base 1, a sliding assembly 2 and a plurality of fan blades 3 corresponding to the number of the sliding assemblies 2, and the sliding assemblies 2 are arranged along the circumference of the fan base 1.

[0055] Among them, the fan base 1 serves as a structure for mounting the fan blades 3, and is used to connect to the drive motor 4 that drives the fan to drive the entire fan structure to rotate. The drive motor 4 has a coaxially arranged outer rotor and an inner stator. After the drive motor 4 is energized, the outer rotor rotates due to the magnetic field force, thereby driving the fan base 1 to rotate synchronously. A motor shaft 41 is fixedly connected to the stator of the drive motor 4. The motor shaft 41 is used to be fixed to the fan's suspension rod, or to be connected to the lamp chassis 12 when the fan structure is applied to a fan lamp. A plurality of mounting holes are provided on the outer rotor of the drive motor 4, and a plurality of connection holes 11 corresponding to the mounting holes are provided on the fan base 1. The connection between the fan base 1 and the outer rotor of the drive motor 4 is fixed by passing through the connection holes 11 on the fan base 1 and the mounting holes on the outer rotor through the fixed connector 5. For details, please refer to Figure 1-Figure 3 shown.

[0056] In addition, when the fan structure is applied to a fan lamp, a mounting plate can be further provided on the side of the motor shaft 41 away from the drive motor 4, and the mounting plate is used to achieve a fixed connection with the lighting fixture. In one achievable method, the lighting fixture includes a light source module and a lampshade, the light source module is fixed on the mounting plate, and the lampshade is also detachably provided on the mounting plate, specifically by bolt connection or clamping. The drive motor 4 and the light source module for driving the fan can be independently controlled by different circuits, so that the user can selectively turn on the fan or the lamp separately according to the use requirements, or can turn on the fan and the lamp at the same time.

[0057] When the fan needs to be fixed to a ceiling or a wall, a clamping ring can be provided on the ceiling or the wall, and a fixing mechanism can be provided on the side of the motor shaft 41 facing the ceiling or the wall. The upper surface of the fixing mechanism is provided with a hook or buckle, and the hook or buckle is engaged in the clamping ring, so that the fan can be hung on the ceiling or the wall through the fixing mechanism. In order to make the outer surface of the fan more neat and beautiful, a ceiling cover can be provided on the outside of the drive motor 4, and the motor shaft 41 is passed through the ceiling cover. When the fan is assembled in place, the drive motor 4 and part of the motor shaft 41 can be hidden in the ceiling cover. By providing the ceiling cover, not only the aesthetic appearance of the fan is improved, but the ceiling cover can also protect the drive motor 4 and the fixing mechanism to a certain extent, and can also play a dust-proof role.

[0058] The fan base 1 can be made of metal to ensure high structural strength. The fan blade 3 structure can be made of plastic or metal according to user needs. The fan blade 3 made of plastic is lighter, has lower installation requirements, and is more convenient to install. The fan blade 3 made of metal has higher structural strength.

[0059] The sliding assembly 2 includes a sliding mechanism 21, which is slidingly connected to the fan base 1. The sliding mechanism 21 can be moved in a direction away from the fan base 1 under the action of centrifugal force during the rotation of the fan base 1. The fan blades 3 are rotationally connected to the end of the sliding mechanism 21 away from the fan base 1. The fan blades 3 can rotate during the movement of the sliding mechanism 21 to increase the wind cutting radius of the fan through the sliding mechanism 21 and the fan blades 3.

[0060] In a specific implementation, when the drive motor 4 is energized, the outer rotor of the drive motor 4 begins to rotate, driving the fan base 1 to rotate. After the fan base 1 begins to rotate, the sliding mechanism 21 arranged circumferentially around the fan base 1 is subjected to the centrifugal force and moves away from the fan base 1. When the sliding mechanism 21 slides out of the fan base 1, it can serve as a wind-cutting structure of the fan to provide air volume. As the motor speed gradually increases, the centrifugal force acting on the sliding mechanism 21 also gradually increases, thereby ensuring that the sliding mechanism 21 can eventually move to the position farthest from the fan base 1. While the sliding mechanism 21 moves, the fan blades 3 arranged in a one-to-one correspondence with the sliding mechanism 21 are connected to the end of the sliding mechanism 21 away from the fan base 1 due to rotation, and the fan blade 3 structure can rotate relative to the sliding mechanism 21 to unfold while the sliding mechanism 21 moves in a direction away from the fan base 1. Therefore, after the fan rotates stably, the fan blades 3 are also fully unfolded relative to the sliding mechanism 21, so that the sliding mechanism 21 and the fan blades 3 together serve as the fan's wind cutting structure, which increases the fan's wind cutting radius compared to the traditional fan structure that only cuts the wind by unfolding the fan blades 3.

[0061] In order to achieve the largest possible wind-cutting radius, in some embodiments, the fan blades 3 can be arranged to be substantially in a straight line with the sliding mechanism 21 after being fully unfolded. As for the retractable fan structure, since in some configurations the fan blades 3 are designed to be arc-shaped, in this case, the two ends of the arc-shaped structure can be arranged in a straight line with the sliding mechanism 21, so as to maximize the wind-cutting radius while maintaining the fixed structural specifications. In addition, the fan blade 3 structure can also be arranged so that its surface extends obliquely along the wind-cutting direction of the fan to improve the wind-cutting effect and increase the amount of air that can be generated.

[0062] The fan provided in this embodiment is provided with sliding assemblies 2 corresponding to the number of fan blades 3, so that all sliding assemblies 2 are arranged along the circumference of the fan base 1. The sliding assembly 2 includes a sliding mechanism 21, and the fan blades 3 are rotatably connected to the end of the sliding mechanism 21 away from the fan base 1. After the fan is started, the sliding mechanism 21 can rely on the centrifugal force it receives to drive the fan blades 3 to move in the direction away from the fan base 1, and at the same time, the fan blades 3 rotate and unfold, so that both the sliding mechanism 21 and the fan blades 3 can cut the wind. Compared with the traditional fan that only sets the fan blades 3 for unfolding and cuts the wind through the fan blades, the fan's cutting radius is increased under the same overall machine size, thereby providing a larger air volume. At the same time, since the sliding mechanism 21 relies on centrifugal force to move, at different speeds, the centrifugal force received by the sliding mechanism 21 is different, and the unfolding distance is also different, so that by setting different speeds, the sliding mechanism 21 and the fan blades 3 can unfold to different sizes to adapt to different air volume requirements.

[0063] This fan structure can be installed in homes, office meeting spaces, factory workshops, and other places where fan installation is required. During assembly, the fan is mounted at a preset location in these locations using a fixing mechanism. The preset location can be, for example, on the ceiling or a room's top wall, and the specific location can be selected based on actual needs. Furthermore, the fan provided in this embodiment can be used for more than just a fan. Of course, in other embodiments, in addition to having a fan function, it can also have an illumination function, that is, the fan can also be a fan light.

[0064] Regarding the number of sliding mechanisms 21 and fan blades 3, this embodiment is described by taking the example of setting the number of sliding mechanisms 21 to three, and the three sliding mechanisms 21 are evenly distributed along the circumference of the fan base 1. Of course, in other embodiments, the sliding mechanisms 21 and fan blades 3 can also be set to other numbers, as long as the structural setting of the sliding mechanism 21 is not affected. In addition, when the fan blades are in a closed state, all the fan blades 3 can be wrapped around the outer circumference of the entire fan, which not only makes the fan structure neat and beautiful, but also can cover the internal structure of the fan through the structure of the fan blades 3, further reducing the degree of external dust entering the interior of the fan, thereby playing a protective role for the internal structure of the fan.

[0065] The sliding mechanism 21 is slidably connected to the fan base 1. Specifically, a plurality of sliding grooves 13 corresponding to the number of sliding components 2 can be provided on the fan base 1. All sliding grooves 13 are arranged along the circumference of the fan base 1, and the sliding mechanism 21 is connected to the sliding grooves 13 in a one-to-one correspondence. Specifically, the fan base 1 includes a chassis 12 and a plurality of sliding grooves 13. The chassis 12 is used to connect to the drive motor 4. That is, the connection holes 11 used to correspond one-to-one with the mounting holes on the drive motor 4 to achieve relative fixation are all provided on the chassis 12. The sliding grooves 13 are arranged on the lateral edges of the chassis 12 to facilitate the installation of the movable sliding mechanism 21 and the rotatable and unfoldable fan blades 3. The sliding grooves 13 and the chassis 12 can be connected by a fixed connector 5 to form the entire fan base 1. Alternatively, the sliding grooves 13 and the chassis 12 can be integrally formed to make the entire structure stronger and more stable during use.

[0066] Since it is necessary to enable the sliding mechanism 21 to slide relative to the fan base 1, the sliding groove 13 can be configured to have a closed side and an open side, and the side opening faces away from the fan base 1 so that the sliding mechanism 21 can slide out from the side opening. In this embodiment, the sliding groove 13 is configured so that its extension direction is perpendicular to the radial direction of the fan base 1. Compared with other angles between the sliding groove 13 and the radial direction of the fan base 1, the area on the fan base 1 that can accommodate the hidden sliding mechanism 21 is larger, which also makes the sliding mechanism 21 move and extend to a longer length. The sliding groove 13 can be configured to match the shape of the sliding mechanism 21, which better accommodates the sliding mechanism 21 and better hides the sliding mechanism 21 and the fan blades 3 when the fan is not working.

[0067] Specifically, a sliding track is formed on the sliding groove 13, and a slider matching the sliding track is provided on the sliding mechanism 21. The sliding track extends in a direction away from the fan base 1. The sliding track and the slider enable the sliding mechanism 21 to slide with the sliding groove 13. The sliding track can be provided on both sides of the sliding groove 13 along the length of the sliding groove 13, that is, in the direction of movement of the sliding mechanism 21, to further ensure the stability of the movement of the sliding mechanism 21 along the sliding groove 13. For the slider on the sliding mechanism 21, a strip-shaped protrusion can be formed on both sides of the sliding mechanism 21. The strip-shaped protrusion is provided on the sliding track to limit the movement direction. Compared with a columnar or block-shaped slider structure, this is more conducive to the stability of movement. Of course, in other embodiments, a slider can be provided on the sliding groove 13, and a sliding track for matching the slider can be provided on the sliding mechanism 21.

[0068] In addition, the included angles between the sliding tracks on two adjacent sliding grooves 13 are the same, that is, the sliding mechanism 21 can be evenly expanded outward around the circumference of the fan base 1, making the structure more stable during the rotation of the fan and also conducive to the aesthetics of use.

[0069] To further enhance the retaining effect between the sliding groove 13 and the sliding mechanism 21 and to stabilize the movement of the sliding mechanism 21 relative to the sliding groove 13, in some embodiments, the fan further includes a slider bead 6, which is provided corresponding to the sliding tracks on all sliding grooves 13. Specifically, a slider bead 6 is provided above each sliding track. The slider bead 6 is fixedly connected to the fan chassis 12 and pressed against the top of the sliding mechanism 21, thereby further confining the sliding mechanism 21 within the sliding track. Furthermore, a slider bead 6 can be provided horizontally between two slider bead 6 provided on a sliding groove 13 to further enhance the retaining effect.

[0070] When a sliding track is provided on the sliding groove 13, in order to limit the maximum distance that the sliding mechanism 21 can move and to prevent the sliding mechanism 21 from slipping due to a large centrifugal force, in this embodiment, an abutment block 131 extending toward the sliding mechanism 21 is further provided at one end of the sliding track away from the fan base 1. When the sliding mechanism 21 moves to be fully extended relative to the fan base 1, the slider abuts against the abutment block 131, so that the sliding mechanism 21 remains at the position with the maximum distance from the fan base 1 during the rotation of the fan.

[0071] In some embodiments, the sliding mechanism 21 specifically comprises a sliding bar, the bottom surface of which is tilted in the fan's shear direction. The sliding mechanism 21 is configured as a sliding bar to facilitate matching with the sliding slot 13. The fan's shear direction generally refers to the direction tangential to the fan's rotational circumference during rotation. The tilted bottom surface of the sliding bar enhances the shear effect of the sliding mechanism 21.

[0072] Because this fan structure can function not only as a standalone fan but also as a fan lamp, when used in a fan lamp, when the fan is not needed to provide cooling air, the blades 3 and the sliding mechanism 21 are retracted into the inner side of the fan lamp structure and are not exposed, ensuring the product's aesthetics while reducing dust. When the fan is needed to provide cooling air, the sliding mechanism 21 and blades 3 are brought out through the rotation of the structure. Compared to the traditional method of using only the blades 3 to drive air, this method can provide a greater air volume while maintaining the same size of the entire device, or, while providing the same air volume, can reduce the space occupied by the entire device.

[0073] Therefore, in order to enable the sliding mechanism 21 to automatically retract after the fan stops running, the fan further includes a first elastic member 7 for providing an elastic restoring force to the sliding mechanism 21, and the first elastic member 7 is arranged between the sliding mechanism 21 and the sliding groove 13. Since the sliding mechanism 21 is moved relative to the fan base 1 by centrifugal force, when the fan stops running, the centrifugal force disappears and the sliding mechanism 21 will still remain in the position after being moved out. In order to achieve the retraction of the sliding mechanism 21 and prevent it from remaining on the outside of the fan base 1 and affecting the overall appearance and to prevent dust from falling, the first elastic member 7 is provided so that after the centrifugal force disappears, the sliding mechanism 21 is moved back to its original position when the fan was not working through the elastic restoring force applied by the first elastic member 7.

[0074] In a specific implementation, when the sliding mechanism 21 and the fan blades 3 are operating normally and deployed, the sliding mechanism 21 is able to overcome the tension exerted on it by the first elastic member 7 through centrifugal force to achieve movement relative to the fan base 1. The first elastic member 7 is in a stretched state. When the drive motor 4 stops working and the centrifugal force gradually decreases and disappears, the tension exerted by the first elastic member 7 on the sliding mechanism 21 begins to act, causing the sliding mechanism 21 to move back toward the fan base 1 until the sliding mechanism 21 moves back into the sliding slot 13 and the fan as a whole returns to the closed state. In this embodiment, the first elastic member 7 is a spring.

[0075] It should be noted that since the sliding mechanism 21 needs to move out relative to the fan base 1 when the fan is running, the centrifugal force applied to the sliding mechanism 21 when the fan rotates needs to be greater than the elastic restoring force provided by the first elastic member 7 to the sliding mechanism 21 to ensure the normal movement of the sliding mechanism 21.

[0076] Since there are multiple sliding mechanisms 21 and fan blades 3, in order to further ensure the synchronous movement of all sliding mechanisms 21, the fan structure also includes a synchronization component 8, which is arranged between the fan base 1 and the sliding mechanism 21 to enable all sliding mechanisms 21 to move synchronously.

[0077] In one achievable manner, the synchronization assembly 8 includes a synchronization turntable 81, which is rotationally connected to the fan base 1, and the synchronization turntable 81 is provided with limiting slide grooves 811 corresponding to the number of the sliding mechanisms 21, and each sliding mechanism 21 is provided with a first limiting post 211, and the first limiting post 211 on each sliding mechanism 21 is slidably connected to a limiting slide groove 811. For details, see Figure 4 As shown. When the sliding mechanism 21 begins to move relative to the fan base 1, since all the sliding mechanisms 21 are slidably connected to the synchronization disk 81 via the first limiting post 211, as long as the synchronization disk 81 rotates relative to the fan base 1, all the sliding mechanisms 21 can move simultaneously with the synchronization disk 81, thereby further ensuring the synchronization of the movement of all the sliding mechanisms 21. The sliding connection between the sliding mechanism 21 and the synchronization disk 81 can absorb the relative displacement of the sliding mechanism 21 with respect to the synchronization disk 81 through the limiting groove 811.

[0078] When the synchronous turntable 81 is connected to the fan base 1, a limiting protrusion 132 can be provided on the sliding groove 13 at a position located inside the sliding track, and a first arc-shaped limiting groove 812 is provided on the synchronous turntable 81 at a position cooperating with all the limiting protrusions 132. The number of the first arc-shaped limiting grooves 812 corresponds to the number of the sliding grooves 13, so that the limiting protrusion 132 on each sliding groove 13 is respectively located in a first arc-shaped limiting groove 812 adjacent to it. It should be noted that since the synchronous turntable 81 can rotate with the movement of the sliding mechanism 21, the length of the first arc-shaped limiting groove 812 needs to be set to be sufficient to enable the sliding mechanism 21 to move from the initial position to the fully extended position.

[0079] In another possible implementation, the synchronization assembly 8 may include a synchronization turntable 81 and a plurality of connecting members 82 corresponding to the number of the sliding mechanisms 21. The synchronization turntable 81 is rotationally connected to the fan base 1, and the two ends of the connecting member 82 are rotationally connected to the synchronization turntable 81 and the sliding mechanism 21, respectively. For details, see Figure 5 When the sliding mechanism 21 starts to move relative to the fan base 1, the connecting member 82 can drive the synchronous turntable 81 to rotate, and the synchronous turntable 81 then drives all the connecting members 82 to rotate simultaneously. The sliding mechanisms 21 corresponding to all the connecting members 82 move simultaneously with the synchronous turntable 81, further ensuring the synchronization of all the sliding mechanisms 21.

[0080] In addition, regarding the arrangement of the first elastic member 7, in other embodiments, based on the provision of the synchronization assembly 8, the two ends of the first elastic member 7 can also be connected to the fan base 1 and the synchronization disk 81, respectively, which can also play the role of providing elastic restoring force to the sliding mechanism 21. Specifically, one end of the first elastic member 7 can be fixed to the through hole of the synchronization disk 81, and the other end of the first elastic member 7 can be fixed to the protrusion structure on the surface of the sliding track.

[0081] In order to realize the connection between the fan blades 3 and the sliding mechanism 21, in some embodiments, the sliding assembly 2 is further provided with a rotating mechanism 22, and the fan blades 3 are rotationally connected to the sliding mechanism 21 via the rotating mechanism 22, and the rotating mechanism 22 is transmission-connected to the fan base 1, so that when the sliding mechanism 21 moves relative to the fan base 1, the rotating mechanism 22 rotates driven by the fan base 1, so that the fan blades 3 rotate relative to the sliding mechanism 21 to be unfolded. The rotating mechanism 22 is transmission-connected to the fan base 1 and can be associated with the movement of the sliding mechanism 21. When the sliding mechanism 21 moves relative to the fan base 1, the rotating mechanism 22 can rotate relative to the sliding mechanism 21, thereby realizing that while the sliding mechanism 21 moves to slide out, the fan blades 3 rotate and unfold synchronously, so that the synchronization of the unfolding of the sliding mechanism 21 and the fan blades 3 is better.

[0082] Specifically, the rotating mechanism 22 and the fan base 1 can be connected in a transmission manner by meshing transmission, that is, the rotating mechanism 22 includes at least one gear, the fan blade 3 is provided on the gear, the gear is rotatably connected to the sliding mechanism 21, and the fan base 1 is provided with a rack 14 for meshing with the gear. The rack 14 extends along the moving direction of the sliding mechanism 21. For details, see Figure 6-8 shown.

[0083] When the sliding mechanism 21 moves relative to the sliding groove 13, the sliding mechanism 21 drives the gear of the rotating mechanism 22 to move synchronously. Since the gear is engaged with the rack 14, the rack 14 drives the gear to rotate. The fan blade 3 is set on the gear, so that it can rotate synchronously with the gear to realize the expansion of the fan blade 3.

[0084] It should be noted that, since it is necessary to realize that when the sliding mechanism 21 moves relative to the fan base 1 to slide out, the fan blades 3 also rotate in the direction away from the fan base 1 to unfold, and the direction of rotation of the gear is fixed at this time, therefore, when the rack 14 is set on the sliding groove 13, it needs to be set on the side that can make the gear rotate in the direction of unfolding the fan blades 3.

[0085] In some embodiments, the number of gears can be set to at least two, at least two gears are meshed in sequence, and, among all the gears, the gear at one end is meshed with the rack 14, and the gear at the other end is rotationally connected to the sliding mechanism 21. Since the sliding mechanism 21 needs to cooperate with the sliding groove 13, and the fan blades 3 are arranged at the end of the sliding mechanism 21 away from the fan base 1, in order to enable the sliding mechanism 21 to continuously drive the gears to rotate through the rack 14 on the sliding groove 13 during the process of starting to move until it moves to the end of the sliding track away from the fan base 1, the number of gears is set to be multiple, which can facilitate the continuous transmission of the gears through the rack 14 along the length of the sliding track. Correspondingly, when the rack 14 is set on the sliding groove 13, the rack 14 can be extended along the length of the sliding track to make the matching length of the rotating mechanism 22 and the gear as long as possible. In this embodiment, five gears are provided, namely, the first gear 221, the second gear 222, the third gear 223, the fourth gear 224 and the fifth gear 225 which are meshed in sequence are used as an example for description. Figure 7 Of course, in other embodiments, the number of gears may be other, as long as it is ensured that the fan blades 3 can be rotated in a direction away from the sliding mechanism 21 to be unfolded while the sliding mechanism 21 moves in a direction away from the fan base 1 .

[0086] In order to facilitate the setting of the rotating mechanism 22, when the sliding mechanism 21 includes a sliding bar, the sliding bar specifically includes an upper cover 212, a bottom plate 213 and a slider slope 214. The inner side of the upper cover 212 is provided with multiple mounting shafts for installing all gears. The gears are rotatably connected to the inner side of the upper cover 212, the bottom plate 213 is fixed on the top surface of the slider slope 214, and the slider slope 214 is further connected to the upper cover 212, so that the rotating mechanism 22 is accommodated inside the sliding mechanism 21, which not only protects the gears but also ensures a smooth and beautiful appearance.

[0087] In addition, a through hole is provided at the end of the upper cover 212 away from the fan base 1, and a mounting protrusion 225a is provided on the gear at the end away from the fan base 1, that is, the fifth gear 225 for connecting with the fan blade 3. The mounting protrusion 225a is passed through the through hole to realize the rotational connection with the sliding mechanism 21, and the fan blade 3 is mounted on the mounting protrusion 225a.

[0088] In addition, a second arc-shaped limiting groove 227 is provided on the surface of the corresponding rotating mechanism 22 of the sliding bar. The rotating mechanism 22 has a second limiting post 226 slidably connected to the arc-shaped limiting groove. The arc center of the second arc-shaped limiting groove 227 is located on the rotation axis of the rotating mechanism 22. When the limiting post slides to one end of the second arc-shaped limiting groove 227, the fan blades 3 are in a retracted state. When the limiting post slides to the other end of the second arc-shaped limiting groove 227, the fan blades 3 are in a fully extended state. By providing the second arc-shaped limiting groove 227, the rotation range of the fan blades 3 can be limited, preventing the fan blades 3 from rotating too much due to inertia, thereby affecting the wind cutting effect.

[0089] According to the arrangement of the various structures in the fan provided in the above embodiment, when the fan is in use, after the drive motor 4 is energized, the outer rotor of the motor begins to rotate, and all the sliding mechanisms 21 arranged on the circumference of the fan base 1 are subjected to the centrifugal force and move along the sliding track on the sliding groove 13 in a direction away from the fan base 1. In addition, during the movement of the sliding mechanism 21 relative to the sliding groove 13, the first gear 221 is simultaneously driven to engage with the rack 14 to achieve rotation. Since the first gear 221, the second gear 222, the third gear 223, the fourth gear 224, and the fifth gear 225 are engaged in sequence, the rotational motion can be continuously transmitted to the fifth gear 225, so that the fifth gear 225 drives the blades 3 to rotate. The sliding mechanism 21 and the blades 3 jointly cut the wind, increasing the working size of the blades 3, that is, increasing the wind cutting radius of the fan. In addition, through the sliding cooperation of the synchronous turntable 81 and the limit column, the synchronization of the expansion motion of all the sliding mechanisms 21 and the blades 3 can be achieved. During the movement of the sliding mechanism 21 away from the fan base 1, the expansion angle of the fan blades 3 can be limited by the cooperation of the limiting slide groove 811 and the limiting column. Combined with the dual functions of the limiting column and the limiting arc groove, the consistency of the sliding stroke and expansion angle of all sliding mechanisms 21 is guaranteed, thereby improving the stability of the fan light during operation.

[0090] When the fan blades 3 are expanded to their maximum size, the high-speed rotation of the drive motor 4 drives the sliding mechanism 21 to also perform wind-cutting movement. Compared with lamps of the same fixed fan blade 3 size, the fan of this embodiment has a smaller axial windshield size, a larger air inlet space, and a smoother axial wind.

[0091] In addition, when the blades 3 are normally deployed, the first elastic member 7 is in a stretched state. At this time, the centrifugal force acting on the sliding mechanism 21 is greater than the elastic force caused by the elastic deformation of the first elastic member 7. When the drive motor 4 stops working, the centrifugal force gradually decreases until it disappears. The elastic force of the first elastic member 7 begins to act, driving the synchronous turntable 81 to rotate. Through the action of the limiting slide groove 811 on the synchronous turntable 81 and the limiting column on the sliding mechanism 21, a contraction force is applied to the sliding mechanism 21, causing the sliding mechanism 21 to begin to slide. And because the first gear 221 is engaged with the rack 14, the rotational motion is transmitted sequentially by the five gears, causing the fifth gear 225 to rotate in the opposite direction relative to the deployment process, thereby driving the blades 3 to retract to the closed state.

[0092] Example 2

[0093] like Figure 11-14 As shown, the difference between the fan provided in this embodiment and the fan in the first embodiment is that the sliding assembly 2 in this embodiment includes a rotating member 23 .

[0094] In this embodiment, the fan blades 3 are rotationally connected to the sliding mechanism 21 via a rotating member 23, so that the fan blades 3 can be rotated relative to the sliding mechanism 21 to be unfolded under the action of centrifugal force during the rotation of the fan base 1. The fan blades 3 are directly rotationally connected to the sliding mechanism 21 via the rotating member 23, so that when the sliding mechanism 21 is moved in a direction away from the fan base 1 to slide out under the centrifugal force, the fan blades 3 can also be directly rotated relative to the sliding mechanism 21 to be unfolded under the centrifugal force, thereby reducing the internal structure of the fan, not only achieving the normal unfolding of the fan blades 3, but also making the structure simpler and facilitating production and installation. In addition, since the rotation of the fan blades 3 is not affected by the sliding mechanism 21, the fan blades 3 can be manually unfolded when the fan is not working, which is convenient for users to clean and maintain later.

[0095] To facilitate the installation of the rotating member 23 on the sliding mechanism 21, in this embodiment, the sliding mechanism 21 includes an upper cover 212 and a lower cover 215. The bottom surface of the lower cover 215 is designed to be inclined to improve the wind-cutting effect of the sliding mechanism 21. The rotating member 23 is disposed in the accommodating cavity formed between the upper cover 212 and the lower cover 215, thereby giving the sliding mechanism 21 a smooth appearance. Specifically, the sliding mechanism 21 is provided with a mounting post, and the rotating member 23 is coaxially arranged and rotatably connected to the mounting post.

[0096] The upper cover 212 of the sliding mechanism 21 may be provided with a through hole for exposing the rotating member 23. The bottom of the rotating member 23 is coaxially arranged with the mounting post on the lower cover 215 and is rotatably connected. The top of the rotating member 23 passes through the upper cover 212 and is located outside the sliding mechanism 21. For details, see Figure 12 As shown. In order to protect the rotating member 23 while not affecting the connection between the blades 3 and the rotating member 23, the sliding mechanism 21 may further include a hole cover, which is correspondingly arranged at the through hole and is used to accommodate the rotating member 23 in the sliding mechanism 21. The hole cover is correspondingly provided with a mounting hole for exposing the mounting protrusion on the rotating member 23 for connecting to the blades 3 so as not to affect the connection between the rotating member 23 and the blades 3. Correspondingly, the hole cover is also provided with a second arc-shaped limiting groove, and the rotating member 23 is provided with a second limiting post 226. The second limiting post 226 is correspondingly slidably connected to the second arc-shaped limiting groove to achieve the function of limiting the rotation angle of the blades 3.

[0097] In order to enable the fan blades 3 to automatically retract after the fan stops running, the sliding assembly 2 also includes a second elastic member 24 for providing an elastic restoring force to the fan blades 3, and the second elastic member 24 is arranged between the sliding mechanism 21 and the rotating member 23. Since the fan blades 3 also rely on the centrifugal force to rotate relative to the sliding mechanism 21 to unfold, when the fan stops running, the centrifugal force disappears and the fan blades 3 will still remain in the fully unfolded position. In order to retract the fan blades 3 and prevent them from remaining on the outside of the fan base 1 and affecting the overall appearance, and to prevent dust from falling, the second elastic member 24 is provided to achieve the goal that after the centrifugal force disappears, the fan blades 3 are moved back to their initial position when the fan was not working through the elastic restoring force applied by the second elastic member 24.

[0098] In specific implementation, when the sliding mechanism 21 and the fan blades 3 are working normally and unfolded, the fan blades 3 can overcome the pulling force of the second elastic member 24 acting on them through centrifugal force to achieve rotation relative to the sliding mechanism 21. The second elastic member 24 is in a stretched or compressed state. When the drive motor 4 stops working and the centrifugal force gradually decreases to disappear, the force applied by the second elastic member 24 on the fan blades 3 begins to act, causing the fan blades 3 to rotate in the direction close to the sliding mechanism 21 until the fan blades 3 are retracted to the inside of the fan base 1, and the fan as a whole returns to the closed state.

[0099] Specifically, in this embodiment, when the second elastic member 24 is provided, it can be a torsion spring provided between the sliding mechanism 21 and the rotating member 23. Correspondingly, when a mounting column is provided on the lower cover 215, the torsion spring is sleeved between the mounting column and the rotating member 23, and the two ends of the torsion spring are respectively in contact with the rotating member 23 and the mounting column, so that when the rotating member 23 drives the fan blade 3 to rotate relative to the mounting column, the torsion spring is expanded or squeezed.

[0100] Other structures of the fan in this embodiment, such as the fan base 1, the synchronization component 8, etc., can be arranged according to the structural form disclosed in the first embodiment. That is, by setting sliding components 2 corresponding to the number of fan blades 3, all sliding components 2 are arranged along the circumference of the fan base 1. The sliding component 2 includes a sliding mechanism 21, and the fan blades 3 are rotatably connected to the end of the sliding mechanism 21 away from the fan base 1. After the fan is started, the sliding mechanism 21 can rely on the centrifugal force it receives to drive the fan blades 3 to move in the direction away from the fan base 1, and at the same time, the fan blades 3 rotate and unfold, so that both the sliding mechanism 21 and the fan blades 3 can cut the wind. Compared with the traditional fan that only sets the fan blades 3 for unfolding, under the same overall machine size, the fan's wind cutting radius is increased, thereby providing a larger air volume. At the same time, since the sliding mechanism 21 relies on centrifugal force to move, at different speeds, the centrifugal force received by the sliding mechanism 21 is different, and the unfolding distance is also different, so that by setting different speeds, the sliding mechanism 21 and the fan blades 3 can unfold to different sizes to adapt to different air volume requirements.

[0101] For example, in this embodiment, it is possible to add a bottom fixing structure 42 to the bottom of the drive motor 4 to clamp the fan base 1 between the drive motor 4 and the bottom fixing structure 42. This not only makes the fan structure more secure, but also further ensures the stability of the fan during rotation, avoiding shaking problems when the speed is too high. In addition, in this embodiment, the number of sliding mechanisms 21 is set to three as an example, and the three sliding mechanisms 21 are evenly distributed along the circumference of the fan base 1. When the fan blades are in a closed state, all the fan blades 3 can be wrapped around the outer periphery of the entire fan, so that the internal structure of the fan can be enclosed by the fan blade 3 structure, further reducing the degree of external dust entering the interior of the fan, thereby protecting the internal structure of the fan.

[0102] When the sliding mechanism 21 is installed in correspondence with the sliding groove 13, a slider bead 6 is used to set the sliding tracks on all the sliding grooves 13. Specifically, a slider bead 6 is set above each sliding track. The slider bead 6 is fixedly connected to the sliding groove 13 on the fan base 1 and is pressed above the sliding mechanism 21, thereby further restricting the sliding mechanism 21 within the sliding track. For details, see Figure 11 Furthermore, another slider beading 6 may be disposed transversely between the two slider beadings 6 disposed on one sliding groove 13 to further improve the fixing effect.

[0103] To retract the sliding mechanism 21 and prevent it from remaining outside the fan base 1, thereby affecting the overall appearance and preventing dust from collecting, a first elastic member 7 is provided. This allows the sliding mechanism 21 to return to its initial position when the fan is not operating, after the centrifugal force disappears, due to the elastic restoring force exerted by the first elastic member 7. Specifically, the first elastic member 7 is connected between the sliding slot 13 and the bottom of the sliding mechanism 21 to provide the sliding mechanism 21 with an elastic restoring force.

[0104] In addition, the synchronization assembly 8 is configured to include a synchronization turntable 81 and a plurality of connecting members 82 corresponding to the number of the sliding mechanisms 21. The synchronization turntable 81 is rotationally connected to the fan base 1. A limit column is provided on each sliding mechanism 21. The two ends of the connecting member 82 are respectively rotationally connected to the synchronization turntable 81 and the limit column. For details, see Figure 5 When the sliding mechanism 21 starts to move relative to the fan base 1, the connecting member 82 can drive the synchronous turntable 81 to rotate, and the synchronous turntable 81 then drives all the connecting members 82 to rotate simultaneously. The sliding mechanisms 21 corresponding to all the connecting members 82 move simultaneously with the synchronous turntable 81, further ensuring the synchronization of all the sliding mechanisms 21.

[0105] When the synchronous turntable 81 is connected to the fan base 1, a plurality of limiting structures can be provided on the surface of the chassis, and limiting grooves can be provided on the synchronous turntable 81 at positions that match all the limiting structures to achieve a rotational connection between the synchronous turntable 81 and the fan base 1. The end of the connecting member 82 connected to the synchronous turntable 81 can be connected using bolts, while ensuring that the connecting member 82 and the synchronous turntable 81 can rotate relative to each other. One end of the connecting member 82 connected to the sliding mechanism 21 can be provided with a through hole, and a connecting post can be provided on the sliding mechanism 21 at a position corresponding to the connection of the connecting member 82. The connecting post can be correspondingly inserted into the through hole, thereby achieving a rotational connection between the connecting member 82 and the sliding mechanism 21.

[0106] Although the above-mentioned structural settings are adopted in this embodiment, it should be noted that as long as it does not affect the rotating member 23 driving the fan blades 3 to rotate by relying on centrifugal force, and the retraction effect can be achieved through the second elastic member 24, other structures of the fan in this embodiment can also apply other feasible settings provided in Example 1.

[0107] According to the arrangement of the various structures in the fan provided in this embodiment, during use, after the drive motor 4 is energized and begins to operate, the motor housing equipped with the outer rotor rotates around the motor shaft 41, driving the fan base 1 to begin rotating. Due to the rotation, the sliding mechanism 21 provided on the fan base 1 and the fan blades 3 mounted thereon begin to be subjected to centrifugal force. As the speed gradually increases, the centrifugal force increases. When the component of the centrifugal force applied to the sliding mechanism 21 in its sliding direction is greater than the sum of the tension of the first elastic member 7 and the friction between the sliding mechanism 21 and the sliding track, the sliding mechanism 21 begins to slide. As the speed increases, the sliding mechanism 21 gradually slides to the position farthest from the fan base 1. The fan blades 3, under the action of the centrifugal force, generate a torsional force around the mounting point of the sliding mechanism 21. When the torsional force is greater than the torsional force provided by the second elastic member 24, the fan blades 3 begin to rotate and unfold. Therefore, the fan blades 3 can also gradually unfold to the maximum angle as the speed increases.

[0108] When the fan is powered off and stops working, the speed of the drive motor 4 gradually decreases, and the centrifugal force acting on the sliding mechanism 21 and the fan blades 3 gradually decreases. When the sum of the centrifugal force acting on the sliding mechanism 21 in the direction of movement and the friction between the sliding mechanism 21 and the sliding track is less than the tension applied by the first elastic member 7, the sliding mechanism 21 begins to move in the direction of retraction. Therefore, as the speed decreases, the sliding mechanism 21 gradually moves back to its initial position. Similarly, the centrifugal force acting on the fan generates a torsional force around the mounting point. When the torsional force is less than the torsional force provided by the second elastic member 24, the fan blades 3 begin to rotate and retract. Therefore, as the speed decreases, the fan blades 3 gradually retract to their initial position.

[0109] At the same time, since each sliding mechanism 21 is connected to the synchronous rotating disk 81, its sliding motion is synchronized. In addition, in this embodiment, the bottom surface of the sliding mechanism 21 is also arranged to be inclined along the wind cutting direction. When the sliding mechanism 21 is removed from the fan base 1, the sliding block assembly as a wind cutting structure has a better wind cutting effect.

[0110] Compared with traditional openable and closable fan light products, since the fan of this embodiment is provided with a sliding mechanism 21, when the fan blades 3 rotate around the installation point and expand to the maximum position, the sliding mechanism 21 can drive the fan blades 3 to slide a farther distance outward, so that the diameter range covered by the fan blades 3 becomes larger than the range of the expanded diameter of traditional invisible fan lights, thereby increasing the overall blowing range of the fan, and the sliding and expanded slider also performs a wind-cutting movement. Under the joint action of the two, the wind blown out by the fan is not only larger in volume and range, but also softer and more comfortable.

[0111] In addition, other technical features of the fan structure in this embodiment are the same as those in the above embodiment and can bring the same or similar technical effects, which will not be described in detail here. Please refer to the description of the above embodiment for details.

[0112] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0113] The foregoing description is merely a detailed description of the embodiments of the present invention, intended to enable those skilled in the art to understand and implement the embodiments of the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the embodiments of the present invention. Therefore, the embodiments of the present invention are not limited to the embodiments described herein, but are intended to be embodied in the widest possible manner consistent with the principles and novel features disclosed herein.

Claims

1. A fan, characterized in that: The fan comprises a rotatable fan base, a drive motor for driving the fan base to rotate, a sliding assembly, and a plurality of fan blades corresponding to the number of the sliding assemblies, wherein the drive motor has a coaxially arranged outer rotor and inner stator, and the sliding assemblies are arranged along the circumference of the fan base; The sliding assembly includes a sliding mechanism, the sliding mechanism is slidably connected to the fan base, and the sliding mechanism moves in a direction away from the fan base under the action of centrifugal force during the rotation of the fan base; The fan blades are rotatably connected to an end of the sliding mechanism away from the fan base, and the fan blades rotate relative to the sliding mechanism to expand during the movement of the sliding mechanism, so as to increase the wind cutting radius of the fan through the sliding mechanism and the fan blades; The sliding assembly further comprises a rotating mechanism, wherein the fan blades are rotationally connected to the sliding mechanism via the rotating mechanism, and the rotating mechanism is transmission-connected to the fan base, so that when the sliding mechanism moves relative to the fan base, the rotating mechanism is driven by the fan base to rotate, so that the fan blades rotate relative to the sliding mechanism to be unfolded; Alternatively, the sliding assembly further comprises a rotating member, and the fan blades are rotatably connected to the sliding mechanism via the rotating member, so that the fan blades can rotate relative to the sliding mechanism to unfold under the action of centrifugal force during the rotation of the fan base.

2. The fan according to claim 1, wherein The fan base has a plurality of sliding grooves corresponding to the number of the sliding components, the sliding mechanisms are connected to the sliding grooves in a one-to-one correspondence, and all the sliding grooves are arranged along the circumference of the fan base.

3. The fan according to claim 2, characterized in that The fan further includes a first elastic member for providing elastic restoring force to the sliding mechanism, wherein the first elastic member is disposed between the sliding mechanism and the sliding slot.

4. The fan according to claim 2, wherein A sliding track is formed on the sliding groove, and a slider matching the sliding track is provided on the sliding mechanism, and the sliding track extends in a direction away from the fan base; The included angles between the sliding rails on two adjacent sliding grooves are the same.

5. The fan according to claim 4, characterized in that An abutment block extending toward the sliding mechanism is provided at one end of the sliding rail away from the fan base. When the sliding mechanism slides to the end of the sliding rail away from the fan base, the slider abuts against the abutment block.

6. The fan according to claim 1, wherein The sliding mechanism includes a sliding bar, and the bottom surface of the sliding bar is tilted along the wind cutting direction of the fan.

7. The fan according to claim 1, wherein The fan further includes a synchronization component, which is arranged between the fan base and the sliding mechanism to enable all the sliding mechanisms to move synchronously.

8. The fan according to claim 7, characterized in that The synchronization assembly includes a synchronization turntable and a plurality of connecting members corresponding to the number of the sliding mechanisms, the synchronization turntable is rotationally connected to the fan base, and the two ends of the connecting member are rotationally connected to the synchronization turntable and the sliding mechanism respectively; Alternatively, the synchronization component includes a synchronization turntable, which is rotatably connected to the fan base, and the synchronization turntable is provided with limiting slide grooves corresponding to the number of the sliding mechanisms, and each of the sliding mechanisms is provided with a first limiting column, which is correspondingly slidably connected to the limiting slide groove.

9. The fan according to any one of claims 1 to 8, characterized in that: The rotating mechanism includes at least one gear, the fan blade is arranged on the gear, and the gear is rotationally connected to the sliding mechanism; The fan base is provided with a rack for engaging with the gear, and the rack extends along the moving direction of the sliding mechanism.

10. The fan according to claim 9, characterized in that There are at least two gears, and at least two of the gears are meshed in sequence. Moreover, among all the gears, the gear at one end is meshed with the rack, and the gear at the other end is rotationally connected to the sliding mechanism.

11. The fan according to any one of claims 1 to 8, characterized in that: The sliding mechanism includes a sliding bar, the rotating mechanism is arranged on a side of the sliding bar away from the fan base, a second arc-shaped limiting groove is provided on a surface of the sliding bar corresponding to the rotating mechanism, and the rotating mechanism has a second limiting column slidably connected to the second arc-shaped limiting groove, and the arc center of the second arc-shaped limiting groove is located on the rotation axis of the rotating mechanism; When the second limiting post slides to one end of the second arc-shaped limiting groove, the fan blades are in a retracted state, and when the second limiting post slides to the other end of the second arc-shaped limiting groove, the fan blades are in a fully extended state.

12. The fan according to any one of claims 1 to 8, characterized in that: The sliding assembly further includes a second elastic member for providing elastic restoring force to the rotating member, and the second elastic member is arranged between the sliding mechanism and the rotating member.

13. The fan according to claim 12, wherein: The sliding mechanism is provided with a mounting post, and the rotating member is coaxially arranged with the mounting post and is rotatably connected thereto; The second elastic member is a torsion spring arranged between the sliding mechanism and the mounting post.

14. The fan according to any one of claims 1 to 8, characterized in that: The sliding mechanism includes a sliding bar, the rotating member is arranged on a side of the sliding bar away from the fan base, a second arc-shaped limiting groove is provided on a surface of the sliding bar corresponding to the rotating member, and the rotating member has a second limiting post slidably connected to the second arc-shaped limiting groove, and the arc center of the second arc-shaped limiting groove is located on the rotation axis of the rotating member; When the second limiting post slides to one end of the second arc-shaped limiting groove, the fan blades are in a retracted state, and when the second limiting post slides to the other end of the second arc-shaped limiting groove, the fan blades are in a fully extended state.

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