Fan, fan lamp and control method thereof

Abstract

The invention relates to a fan and fan lamp, including mounting support part and fan assembly, mounting support part and fan assembly are connected, its characterized in that: fan assembly includes drive part, cooperation shell and fan blade fixed disk, fan blade fixed disk is provided with fan blade, drive part and mounting support part are connected, the cooperation shell is equipped with the fan blade fixed disk, drive part is equipped with the fan blade fixed disk, drive part is equipped with the fan blade fixed disk. The matching shell is fixedly connected with the driving part and rotates along with the driving part, the fan blade fixing disc is connected with the matching shell, a guide mechanism is arranged between the matching shell and the fan blade fixing disc, and when the matching shell rotates, the fan blade fixing disc can move up and down along the guide mechanism. Through cooperation of the guide mechanism, the fan blade fixing disc can be lifted upwards in the rotating process, the opening and hiding functions of the fan blades are better achieved, and the remarkable technical effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of furniture and electrical appliance technology, and more particularly to a fan and a fan light with lighting function. Background Technology

[0002] Ceiling fan lights, as electrical appliances that combine the functions of pendant lights and ceiling fans, not only meet the basic needs of lighting and ventilation but also often have a decorative effect, becoming a highlight of the home space. Currently, ceiling fan lights are mainly divided into two categories: traditional straight-blade types and concealed fan lights. Among them, concealed fan lights, as a special design, aim to achieve visual beauty and harmony when the fan is not in operation by hiding the fan blades.

[0003] However, most invisible fan lights on the market fail to achieve a truly invisible fan blade effect. Even when the fan stops running, the blades are still clearly visible, and may even appear messy due to improper retraction. This unsightly blade shape is particularly prominent when viewed from a non-directly downward angle, severely impacting the overall decorative aesthetics. Summary of the Invention

[0004] To overcome at least one of the defects described in the prior art, the present invention provides a fan and fan light with a simple structure and blades that retract and hide when at rest.

[0005] To solve the aforementioned technical problems, the present invention adopts the following technical solution:

[0006] A fan includes a mounting support and a fan assembly. The mounting support is connected to the fan assembly. The fan assembly includes a drive unit, a mating housing, and a blade fixing plate. Fan blades are mounted on the blade fixing plate. The drive unit is connected to the mounting support. The mating housing is fixedly connected to the drive unit and rotates with it. The blade fixing plate is connected to the mating housing. A guide mechanism is provided between the mating housing and the blade fixing plate. When the mating housing rotates, the blade fixing plate can move up and down along the guide mechanism. This patent uses a guide mechanism to allow the blade fixing plate to slide up and down during rotation. When the blade fixing plate moves upward, it facilitates the opening of the fan blades; when the blade fixing plate moves downward, the fan blades retract into the outer ring cover, facilitating the concealment of the fan blades.

[0007] The guiding mechanism includes a first guide member located on the outside of the mating housing and a second guide member located on the fan blade fixing plate, wherein the first guide member and the second guide member are matched.

[0008] Preferably, the first guide member includes a lifting guide member that is inclined in the vertical direction along the side wall of the mating housing. The lifting guide member is a groove structure or an inclined surface structure. This structure facilitates the sliding of the second guide member up and down along the first guide groove.

[0009] The lower end of the lifting guide is provided with a first stop, and the upper end of the lifting guide is provided with a second stop. The first stop and the second stop define the movement area of ​​the second guide.

[0010] Preferably, the first stop and the second stop are raised ribs connected to the lifting guide, which prevent the lifting guide from continuing to extend downward or upward.

[0011] A first stop plane is provided at the connection between the first stop part and the lower end of the lifting guide member, and a second stop plane is provided at the connection between the second stop part and the upper end of the lifting guide member. The first stop plane and the second stop plane provide space for the second guide member. When the fan blades are open and in a continuous and stable rotation process, the second guide member is in the position of the second stop plane. When the fan blades are retracted and return to the outer ring cover, the second guide member is in the position of the first stop plane.

[0012] The top wall of the mating housing extends outward to form a flange, and the second stop is connected to the flange. This structure can form a groove-like structure between the second stop and the flange, preventing the second guide from detaching from the first guide and simplifying the structural design.

[0013] An mounting port is provided at the flange position corresponding to the first stop plane, and the second guide member on the fan blade fixing plate completes the assembly of the fan blade fixing plate and the mating housing through the mounting port.

[0014] The housing is integrally formed with the rotating component of the drive unit or becomes part of the rotating component of the drive unit.

[0015] The second guide is a guide block that is mounted on the fan blade fixing plate and can match the first guide.

[0016] The fan blade fixing plate includes a mating part, a toothed ring mounting part, and a fan blade mounting part.

[0017] The mating part is a cylindrical structure, sleeved on the outer periphery of the side wall of the mating shell, and the guide block is protrudingly disposed at the lower end of the mating part.

[0018] The fan blade fixing plate is provided with a synchronous toothed ring, and the synchronous toothed ring is provided with outwardly protruding external meshing teeth corresponding to the number of fan blades. The fan blade fixing plate is also provided with a limiting hole, and the external meshing teeth are located at the limiting hole.

[0019] A return spring is provided between the synchronous gear ring and the fan blade fixing plate.

[0020] The fan blades are rotatably connected to a fan blade fixing plate. A rotating gear is provided at the connection point between the fan blades and the fan blade fixing plate, and the rotating gear meshes with an external meshing convex tooth. With this structure, when one fan blade opens or closes, it drives the synchronous gear ring to rotate via the rotating gear. The synchronous gear ring then drives the other fan blades to open or close synchronously. This structure perfectly solves the problem of synchronous opening or closing of the fan blades.

[0021] The fan blade fixing plate is equipped with a limiting mechanism that can restrict the rotation angle of the fan blade.

[0022] The limiting mechanism includes a limiting strip located on the mounting base of the fan blade fixing plate, which can limit the rotation angle of the rotating gear.

[0023] A fan light includes the fan and lighting device described above, wherein the lighting unit is located below the fan assembly.

[0024] The lighting unit is located below the drive unit, and an outer ring cover is fixed to the outer edge of the lighting unit. The fan blade fixing plate and the retracted fan blade are housed inside the outer ring cover.

[0025] This patent also provides a control method applicable to the above-mentioned fan or fan light, which includes at least the following steps:

[0026] Step S1: Start the drive unit. The drive unit drives the fan blade fixing plate to rotate and rise along the mating housing. When the fan blade exceeds the height of the outer ring cover, the fan blade opens and continues to rotate.

[0027] Preferably, in step S1, the guide block on the fan blade fixing plate slides from the first stop plane position along the lifting guide to the second stop plane position and remains at the second stop plane position.

[0028] Furthermore, the control method also includes step S2: when the drive unit is turned off, the rotation speed of the drive unit and the fan blade fixing disk gradually decreases, and the fan blades retract during the deceleration process.

[0029] In step S2, when the speed of the drive unit drops to 0, it begins to rotate in the opposite direction, causing the guide block to disengage from the second stop plane and slide along the lifting guide to the position of the first stop plane. At this time, the retracted fan blades are located inside the outer ring cover.

[0030] In step S1, before the fan blades open, the drive unit drives the fan blade fixing disk to rotate at a preset speed V1 for a preset time period T1 seconds. The preset speed V1 is no higher than 120 revolutions per minute, and the preset time period T1 is 1-10 seconds.

[0031] In step S2, when the drive unit is turned off, the rotation speed of the drive unit decreases by an average of 1%-15% per second, and the deceleration time lasts for 2-30 seconds. When the rotation speed of the drive unit decreases to 0, the time period for the drive unit to rotate in the opposite direction is 1-6 seconds.

[0032] When downshifting is required, the speed of drive unit 2 decreases by an average of 1%-15% per second during deceleration.

[0033] Compared to existing technologies, this patent, through the cooperation of a guiding mechanism, enables the fan blade fixing plate to rise upwards during rotation, better realizing the opening and hiding functions of the fan blades, avoiding the visual discomfort caused by exposed fan blades, and greatly improving the aesthetics of the concealed fan light. Simultaneously, this patent, by setting a synchronous gear ring and cooperating with the fan blades, greatly ensures the stability of the fan blades' start-up and retraction, achieving significant technical effects. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the fan light blades of the present invention in the retracted state;

[0035] Figure 2 This is a schematic diagram of the fan blades of the present invention in the open state;

[0036] Figure 3 This is a top view of the fan light of the present invention;

[0037] Figure 4 for Figure 3 AA section view;

[0038] Figure 5 This is a schematic diagram of the fan light drive unit structure of the present invention;

[0039] Figure 6 This is a schematic diagram of the structure of the fan light and housing of the present invention;

[0040] Figure 7 This is a schematic diagram of the fan blade fixing disk structure of the present invention;

[0041] Figure 8 for Figure 7 Enlarged view of section A;

[0042] Figure 9 This is a schematic diagram of the bottom structure of the fan blade fixing disk of the present invention;

[0043] Figure 10 This is a schematic diagram of the assembly structure of the synchronous gear ring and fan blade of the present invention;

[0044] Figure 11 This is a schematic diagram of the fan blade fixing disk structure equipped with a synchronization gear ring according to the present invention.

[0045] Figure 12This is a schematic diagram of the fan-lamp structure equipped with a synchronization gear ring according to the present invention;

[0046] Figure 13 This is another structural schematic diagram of the fan light equipped with a synchronous gear ring according to the present invention;

[0047] Figure 14 This is a schematic diagram of the assembly structure of the fan blade and fan light of the present invention.

[0048] In the picture:

[0049] 1. Mounting support unit, 101. Cable support pipe rack, 2. Drive unit, 3. Mating housing, 301. Top wall, 302. Side wall, 303. Flange, 304. Mounting port, 4. Lifting guide, 5. First stop, 501. Second stop, 6. Second stop, 601. Fan blade fixing plate, 7. Mating part, 701. Gear ring mounting part, 702. Gear ring mounting upper wall, 7021. Gear ring device side wall, 7022. Fan blade mounting part, 703. Limiting hole, 8. First spring fixing part, 9. Return spring, 10. Synchronous gear ring, 11. Second spring fixing part, 12. External meshing tooth, 13. Lighting unit, 14. Outer ring cover, 15. Guide block, 16. Cover, 17. Fan blade, 18. Meshing tooth, 19. Support mounting plate, 20. Support top cover, 21. Pipe rack assembly liner, 201. Rotating gear, 22. Limiting strip, 25. Mounting seat, 26. Mounting hole, 27. Detailed Implementation

[0050] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0051] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0055] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0056] Example 1

[0057] like Figure 1-14 As shown, a fan light includes a mounting support 1, a fan assembly, and a lighting unit 14.

[0058] like Figure 1As shown, the mounting support 1 includes a cable support bracket 101, a support mounting plate 20, and a support ceiling cover 21. The support mounting plate 20 is located at the top of the cable support bracket 101 and can be fixedly connected to the ceiling or wall. The support ceiling cover 21 is fixedly installed on the outside of the support mounting plate 20, providing shielding and protection for the support mounting plate 20 and electrical wiring components. The bottom end of the cable support bracket 101 is fixedly connected to the drive unit 2.

[0059] like Figure 5-6 As shown, the fan assembly includes a drive unit 2, a mating housing 3, and a fan blade fixing plate 7. The drive unit 2 is a drive motor, and a tube frame mounting liner 201 is mounted on the top of the drive unit 2. The tube frame mounting liner 201 is fixedly connected to the cable support bracket 101. The mating housing 3 is located outside the drive unit 2, and is fixedly connected to the drive unit 2 and rotates with the drive unit 2. Preferably, the mating housing 3 is connected to the rotating component of the drive unit 2, and the connection method is preferably screw fixing or snap-fit ​​structure. Furthermore, the fixed connection between the mating housing 3 and the drive unit 2 includes the option that the mating housing 3 can be integrally formed with the rotating component of the drive unit 2 or become part of the rotating component of the drive unit 2.

[0060] Preferably, the mating housing 3 has a sleeve-like structure with open upper and lower ends. The mating housing 3 includes a top wall 301 and a side wall 302. The top wall 301 is fixedly connected to the rotating component of the drive unit 2. A through hole is provided in the middle of the top wall 301, through which the tube frame mounting liner 201 at the top of the drive unit 2 passes. The side wall 302 is fixedly connected to the top wall 301 or integrally formed. Preferably, the side wall 302 is formed into a cylindrical shape, and the drive unit 2 is disposed inside the mating housing 3.

[0061] A guide mechanism is provided between the mating housing 3 and the fan blade fixing disk 7. The guide mechanism includes a first guide member located on the outside of the mating housing 3 and a second guide member located on the fan blade fixing disk 7. The first guide member and the second guide member are matched.

[0062] like Figure 6 As shown, the first guide member is formed on the side wall 302 of the mating housing 3. The first guide member includes a lifting guide member 4 that is inclined along the side wall 302 of the mating housing 3. The lifting guide member 4 is a groove structure or an inclined surface structure, extending inclinedly from the lower end to the upper end of the side wall 302 of the mating housing 3. When the lifting guide member 4 is an inclined surface structure, the inclined surface structure can be formed by a rib provided on the side wall 302 of the mating housing 3, and the inclined surface profile formed by the rib extends inclinedly on the side wall 302 of the mating housing 3.

[0063] The lower end of the lifting guide 4 is provided with a first stop 5, and the upper end of the lifting guide 4 is provided with a second stop 6. The first stop 5 and the second stop 6 are preferably ribs connected to the lifting guide 4, which prevent the lifting guide 4 from extending further downwards or upwards. In this embodiment, the first stop 5 is a rib extending upwards as a whole. A first stop plane 501 is provided at the connection between the first stop 5 and the lower end of the lifting guide 4. The second stop 6 extends upwards and connects to the top wall 301 of the mating housing 3. The top wall 301 of the mating housing 3 extends outwards to form a flange 303. The second stop 6 connects to the flange 303. A second stop plane 601 is provided at the connection between the second stop 6 and the upper end of the lifting guide 4. The second stop plane 601, the flange 303, and the second stop 6 form a groove structure. Preferably, a mounting port 304 is provided at the flange position corresponding to the first stop plane 501. Of course, the mounting port 304 can also be provided at a position offset from the first stop plane 501.

[0064] Preferably, in this embodiment, the number of the first guide members is preferably three. The three first guide members are evenly distributed on the side wall 302 of the housing 3. Adjacent first guide members are connected end to end. Specifically, the first stop 5 is connected to the second stop 6 at the upwardly extending end.

[0065] The fan blade fixing disk 7 is provided with a synchronization gear ring 11 and a fan blade 18, and the fan blade 18 is rotatably mounted on the fan blade fixing disk 7.

[0066] The fan blade fixing plate 7 includes a mating part 701, a toothed ring mounting part 702, and a fan blade mounting part 703.

[0067] like Figure 6 , 7As shown in FIGS. 9, the mating portion 701 is a cylindrical structure sleeved around the outer periphery of the side wall 302 of the mating housing 3. Therefore, the shape of the mating portion 701 can match the shape of the mating housing. The second guiding member is a guiding block 16 provided on the fan fixing plate 7 and capable of matching with the first guiding member. The guiding block 16 protrudes from the lower end of the mating portion 701, and the number of guiding blocks 16 is the same as that of the first guiding member. When the mating portion 701 is sleeved around the outer periphery of the side wall 302 of the mating housing 3, the guiding block 16 extends into the installation opening 304 on the flange 303 of the mating housing 3 and can abut against the position of the first stop portion 5. When the driving portion 2 rotates clockwise, due to inertia, a relative movement occurs between the guiding block 16 and the lifting guiding member 4. Due to the rotation of the driving portion 2, the guiding block 16 is gradually lifted along the extending direction of the lifting guiding member 4 starting from the position of the first stop portion 5 until the guiding block 16 reaches the position of the second stop portion 6 and maintains synchronous rotation with the driving portion 2 at this position. By providing the first stop portion 5 and the second stop portion 6 in this patent, it is avoided that the guiding block 16 slips off during the sliding movement on its surface, ensuring the stability of the guiding block 16 during the movement process.

[0068] Obviously, the installation positions of the first guiding member and the second guiding member can be interchanged, that is, the first guiding member is provided on the fan fixing plate 7 and the second guiding member is provided on the mating housing 3. Such an interchange will not bring a substantial change to this patent and still belongs to the inventive concept of this patent.

[0069] The tooth ring installation portion 702 is fixedly connected to the lower end of the mating portion 701, the fan installation portion 703 is fixedly connected to the tooth ring installation portion 702. The diameter of the tooth ring installation portion 702 is larger than that of the mating portion 701, and the diameter of the fan installation portion 703 is larger than that of the tooth ring installation portion 702. Preferably, the mating portion 701, the tooth ring installation portion 702 and the fan installation portion 703 are integrally formed to constitute a structure similar to a "convex" shape.

[0070] The tooth ring installation portion 702 includes a tooth ring installation upper wall 7021 and a tooth ring device side wall 7022. The middle of the tooth ring installation upper wall 7021 is fixedly connected to the mating portion 701, the outer edge of the tooth ring installation upper wall 7021 is fixedly connected to the tooth ring device side wall 7022. The tooth ring device side wall 7022 is uniformly provided with limiting holes 8. The limiting holes 8 are strip-shaped or arc-shaped openings. The tooth ring installation portion 702 further has a first spring fixing member 9.

[0071] As Figure 7 、 8As shown in Figure 14, the fan blade mounting portion 703 is annularly connected to the side wall 7022 of the toothed ring device, and the fan blade 18 is rotatably mounted on the fan blade mounting portion 703. Specifically, there are preferably three fan blades 18, and the fan blade mounting portion 703 is provided with three mounting seats 26 along the circumference. One end of the fan blade 18 is correspondingly formed with a mounting hole 27, which is rotatably located at the mounting seat 26. Preferably, an inverted snap structure is provided between the fan blade 18 and the mounting seat 26 to prevent the fan blade 18 from detaching from the mounting seat 26. The inverted snap structure includes a snap fastener located at the position of the mounting seat 26, which engages with the mounting hole 27. This structure satisfies the rotation of the fan blade 18 while preventing the fan blade 18 from detaching from the mounting seat 26. Preferably, a cover 17 is provided at the position of the mounting hole 27 to cover the mounting hole 27.

[0072] The synchronizing gear ring 11 is located inside the fan blade fixing disk 7. The synchronizing gear ring 11 has a ring structure and three outwardly protruding external meshing teeth 13 are evenly provided on the synchronizing gear ring 11. The external meshing teeth 13 are strip-shaped or arc-shaped. A second spring fixing member 12 is provided on the inner side of the synchronizing gear ring 11. The synchronizing gear ring 11 is installed in the gear ring mounting part 702 of the fan blade fixing disk 7. The external meshing teeth 13 are located at the limiting hole 8. The length of the external meshing teeth 13 is less than that of the limiting hole 8. Therefore, when the synchronizing gear ring 11 rotates, the external meshing teeth 13 can move within the limiting hole 8.

[0073] like Figure 12-13 As shown, in order to realize the reciprocating motion of the external meshing protrusion 13 in the limiting hole 8, a return spring 10 is provided between the synchronous gear ring 11 and the fan blade fixing plate 7. The two ends of the return spring 10 are respectively connected to the first spring fixing member 9 on the fan blade fixing plate 7 and the second spring fixing member 12 on the synchronous gear ring 11. When the external meshing protrusion 13 moves relative to the limiting hole 8, the return spring 10 is stretched and undergoes elastic deformation and generates a return force.

[0074] A rotating gear 22 is provided at the connection position between the fan blade 18 and the fan blade fixing plate 7. The rotating gear 22 is fixedly connected to the fan blade 18 or integrally formed with the fan blade 18. In this embodiment, the rotating gear 22 is located below the mounting hole 27 of the fan blade 18. The rotating gear 22 is a hollow ring and is coaxially connected to the mounting hole 27 of the fan blade 18. Therefore, the rotating gear 22 is sleeved on the mounting base 26 and can rotate together with the fan blade 18 around the mounting base 26.

[0075] The rotating gear 22 is provided with meshing teeth 19, which mesh with the outer meshing convex teeth 13 of the synchronizing gear ring 11. That is, when a fan blade 18 is rotated by an angle to open, the rotating gear 22 on the fan blade 18 will rotate and drive the synchronizing gear ring 11 to rotate through the meshing of the meshing teeth 19 and the outer meshing convex teeth 13. The rotation of the synchronizing gear ring 11 will then drive the rotating gears 22 of the other two fan blades 18 to rotate through the outer meshing convex teeth 13, thereby driving the other two fan blades to open synchronously to the same angle.

[0076] The fan light also includes a limiting mechanism to restrict the rotation angle of the fan blade 18. In this embodiment, the limiting mechanism includes a limiting strip 25 located at the mounting base 26 on the fan blade fixing plate 7. The limiting strip 25 can limit the rotation angle of the rotating gear 22, thereby limiting the opening angle of the fan blade 18. The rotating gear 22 has at least one abutting end. When the fan blade 18 is at its maximum opening angle, the abutting end of the rotating gear 22 abuts against the limiting strip 25, preventing the fan blade from opening further. Preferably, the fan blade 18 is generally crescent-shaped, with a larger arc on the outer edge and a smaller arc on the inner edge. When the fan blade 18 is in the retracted state, the inner side of the fan blade 18 rests against the periphery of the mating part 701 of the fan blade fixing plate 7. Preferably, the middle part of the fan blade 18 is concave, which allows the fan blade 18 to generate greater wind resistance when starting, thereby facilitating rapid deployment and improving starting efficiency.

[0077] Below the drive unit 2, there is also an illumination unit 14. An outer ring cover 15 is fixed to the outer edge of the illumination unit 14. The fan blade fixing plate 7 and the retracted fan blade 18 are housed in the outer ring cover 15. After the fan blade 18 stops rotating, it retracts into the outer ring cover 15, so that the user cannot see the fan blade. In the start-up state, the drive unit 2 drives the cooperating housing 3 to rotate and automatically brings out the fan blade 18 to work. This patent completely hides the fan blade 18 through the outer ring cover 15, avoiding the visual discomfort caused by the exposed fan blade 18 and greatly improving the aesthetics of the invisible fan light.

[0078] In summary, the working principle of this patent is as follows:

[0079] When the fan blade 18 is moved out and blower operation is performed, the drive unit 2 is activated. The drive unit 2 drives the mating housing 3 to rotate, which in turn drives the lifting guide 4 and the guide block 16 to slide. When the guide block 16 slides to the highest position on the lifting guide 4, it drives the entire fan blade fixing plate 7 to rotate. When the fan blade 18 is raised out of the outer ring cover 15, the drive unit 2 continues to drive the mating housing 3 to rotate, which in turn drives the fan blade fixing plate 7 and the fan blade 18 to rotate. The fan blade 18 opens under the action of wind force and inertia. The fan blade 18 drives the synchronous gear ring 11 to rotate through the rotating gear 22 and stretches the return spring 10, thereby realizing the blower operation.

[0080] When the fan blade 18 is retracted and the blowing function is stopped, the drive unit 2 is turned off. As the fan blade 18 slows down and approaches a stop, the wind resistance encountered by the fan blade 18 decreases. Under the action of the return spring 10, the meshing teeth 19 of the fan blade 18 engage with the outer meshing protrusions 13 of the synchronous tooth ring 11 and reset, so that the fan blade 18 returns to the fan blade fixing plate 7. When the fan blade fixing plate 7 stops, it slides on the lifting guide member 4 through the guide block 16 and is lowered into the outer ring cover 15 to retract.

[0081] Example 2

[0082] This embodiment omits the lighting function based on embodiment 1, so that the fan light retains only the fan function and becomes a fan that can hide the fan blades. The structure of this fan is the same as the structure of the fan part described in embodiment 1, and will not be described again here.

[0083] Example 3

[0084] This patent also provides a control method applicable to the fan light in Embodiment 1 and the fan in Embodiment 2, the control method including at least the following steps:

[0085] Step S1: Start the drive unit 2. The drive unit 2 drives the fan blade fixing plate 7 to rotate and rise along the mating housing 3. When the fan blade exceeds the height of the outer ring cover 15, the fan blade opens and continues to rotate. During this process, the guide block 16 on the fan blade fixing plate 7 slides from the first stop plane 501 position along the lifting guide member 4 to the second stop plane 601 position and remains at the second stop plane 601 position.

[0086] Step S2: When the drive unit 2 is turned off, the speed of the drive unit 2 and the fan blade fixing plate 7 gradually decreases. The fan blades retract during the deceleration process. When the speed of the drive unit 2 drops to 0, it starts to rotate in the opposite direction, causing the guide block 16 to disengage from the second stop plane 601 and slide along the lifting guide 4 to the position of the first stop plane 501. At this time, the retracted fan blades are located inside the outer ring cover 15.

[0087] Preferably, in step S1, before the fan blades open, the drive unit 2 drives the fan blade fixing disk 7 to rotate at a preset speed V1 for a preset time period T1 seconds. The preset speed V1 is not higher than 120 revolutions per minute, and the preset time period T1 is preferably 1-10 seconds.

[0088] In step S2, when the drive unit 2 is turned off, the rotation speed of the drive unit 2 decreases by an average of 1%-15% per second, and the deceleration time lasts for 2-30 seconds. When the rotation speed of the drive unit 2 decreases to 0, the time period for the drive unit 2 to rotate in the opposite direction is preferably 1-6 seconds.

[0089] When it is necessary to downshift the drive unit 2, that is, to downshift from a high gear to a low gear, the speed of the drive unit 2 decreases by an average of 1%-15% per second during the deceleration process.

[0090] Obviously, the above embodiments of this patent are merely examples for clearly illustrating this patent, and are not intended to limit the implementation of this patent. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this patent should be included within the scope of protection of the claims of this patent. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; however, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification.

[0091] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the scope of this invention patent should be determined by the appended claims.

Claims

1. A fan, comprising a mounting support and a fan assembly, wherein the mounting support is connected to the fan assembly, characterized in that, The fan assembly includes a drive unit, a mating housing, and a fan blade fixing plate. The fan blade fixing plate is provided with fan blades. The drive unit is connected to the mounting support unit. The mating housing is fixedly connected to the drive unit and rotates together with the drive unit. The fan blade fixing plate is connected to the mating housing. A guide mechanism is provided between the mating housing and the fan blade fixing plate. When the mating housing rotates, the fan blade fixing plate can generate an up-and-down movement trajectory along the guide mechanism.

2. The fan according to claim 1, characterized in that, The guiding mechanism includes a first guide member located on the outside of the mating housing and a second guide member located on the fan blade fixing plate, wherein the first guide member and the second guide member are matched.

3. The fan according to claim 2, characterized in that, The first guide member includes a lifting guide member that is inclined in the vertical direction along the side wall of the mating housing.

4. The fan according to claim 3, characterized in that, The lifting guide is a groove structure or an inclined surface structure.

5. The fan according to claim 3, characterized in that, The lower end of the lifting guide is provided with a first stop, and the upper end of the lifting guide is provided with a second stop.

6. A fan light according to claim 3, characterized in that, The first stop and the second stop are raised ribs connected to the lifting guide, which prevent the lifting guide from continuing to extend downward or upward.

7. The fan according to claim 5, characterized in that, A first stop plane is provided at the connection between the first stop part and the lower end of the lifting guide, and a second stop plane is provided at the connection between the second stop part and the upper end of the lifting guide.

8. The fan according to claim 7, characterized in that, The top wall of the mating housing extends outward to form a flange, and the second stop is connected to the flange.

9. The fan according to claim 8, characterized in that, An installation port is provided at the flange position corresponding to the first stop plane.

10. The fan according to claim 1, characterized in that, The housing is integrally formed with the rotating component of the drive unit or becomes part of the rotating component of the drive unit.

11. The fan according to claim 2, characterized in that, The second guide is a guide block that is mounted on the fan blade fixing plate and can match the first guide.

12. The fan according to claim 11, characterized in that, The fan blade fixing plate includes a mating part, a toothed ring mounting part, and a fan blade mounting part.

13. The fan according to claim 12, characterized in that, The mating part is a cylindrical structure, sleeved on the outer periphery of the side wall of the mating shell, and the guide block is protrudingly disposed at the lower end of the mating part.

14. The fan according to claim 1, characterized in that, The fan blade fixing plate is provided with a synchronous toothed ring, and the synchronous toothed ring is provided with outwardly protruding external meshing teeth corresponding to the number of fan blades. The fan blade fixing plate is also provided with a limiting hole, and the external meshing teeth are located at the limiting hole.

15. The fan according to claim 14, characterized in that, A return spring is provided between the synchronous gear ring and the fan blade fixing plate.

16. The fan according to claim 14, characterized in that, The fan blade is rotatably connected to the fan blade fixing plate. A rotating gear is provided at the connection position between the fan blade and the fan blade fixing plate, and the rotating gear meshes with the external meshing convex tooth.

17. The fan according to claim 16, characterized in that, The fan blade fixing plate is equipped with a limiting mechanism that can restrict the rotation angle of the fan blade.

18. The fan according to claim 17, characterized in that, The limiting mechanism includes a limiting strip located on the mounting base of the fan blade fixing plate, which can limit the rotation angle of the rotating gear.

19. A fan light comprising the fan and lighting device as described in any one of claims 1 to 18, wherein the lighting portion is disposed below the fan assembly.

20. The fan light according to claim 19, characterized in that, The lighting unit is located below the drive unit, and an outer ring cover is fixed to the outer edge of the lighting unit. The fan blade fixing plate and the retracted fan blade are housed inside the outer ring cover.

21. A control method for a fan according to any one of claims 1 to 18 or a fan light according to any one of claims 19 to 20, characterized in that: At least the following steps are included: Step S1: Start the drive unit. The drive unit drives the fan blade fixing plate to rotate and rise along the mating housing. When the fan blade exceeds the height of the outer ring cover, the fan blade opens and continues to rotate.

22. The control method according to claim 21, characterized in that, In step S1, the guide block on the fan blade fixing plate slides from the first stop plane position to the second stop plane position along the lifting guide and remains at the second stop plane position.

23. The control method according to claim 21, characterized in that, Also includes: Step S2: When the drive unit is turned off, the speed of the drive unit and the fan blade fixing plate gradually decreases, and the fan blades retract during the deceleration process.

24. The control method according to claim 23, characterized in that, In step S2, when the speed of the drive unit drops to 0, it begins to rotate in the opposite direction, causing the guide block to disengage from the second stop plane and slide along the lifting guide to the position of the first stop plane. At this time, the retracted fan blades are located inside the outer ring cover.

25. The control method according to claim 21, characterized in that, In step S1, before the fan blades open, the drive unit drives the fan blade fixing disk to rotate at a preset speed V1 for a preset time period T1 seconds. The preset speed V1 is no higher than 120 revolutions per minute, and the preset time period T1 is 1-10 seconds.

26. The control method according to claim 23, characterized in that, In step S2, when the drive unit is turned off, the rotation speed of the drive unit decreases by an average of 1%-15% per second, and the deceleration time lasts for 2-30 seconds. When the rotation speed of the drive unit decreases to 0, the time period of the drive unit rotating in the opposite direction is 1-6 seconds.

27. The control method according to claim 21, characterized in that, When it is necessary to downshift the drive unit, the speed of the drive unit 2 decreases by an average of 1%-15% per second during the deceleration process.

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