Fan device

Abstract

The embodiment of the utility model provides a fan device. The fan device comprises a first shell and a second shell, the second shell is nested in the first shell; the driving piece is located in the first shell; the lifting structure is located in the first shell, and the lifting structure comprises a first gear connected to the output end of the driving part; the second gear is meshed with the first gear; the first driven assembly is connected to the second gear and the second shell. The first driven assembly can move along with rotation of the second gear so as to drive the second shell to stretch out of or retract into the first shell. The fan device has the advantages of being stable in lifting and convenient to store.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature regulating equipment, in particular to a fan device. Background Art

[0002] A skirting heater (abbreviated as skirting) is a new type of heater and belongs to a kind of temperature regulating equipment. The skirting heater can achieve a heating effect by blowing hot air through a fan, so it also belongs to a fan device. Compared with traditional heating equipment or fan devices, the skirting heater can be placed in a corner, which is beautiful and has good concealment. However, in the existing skirting heaters, the position of the air outlet is generally fixed and non-adjustable. When not in use, dust easily enters through the air outlet, and users can see the interior of the product through the air outlet, affecting the appearance. To address these problems, some skirting heaters have the air outlet set to be liftable, but how to optimize the lifting function still needs to be studied. Summary of the Utility Model

[0003] Therefore, to overcome at least some of the defects and deficiencies in the prior art, embodiments of the present utility model provide a fan device with the characteristics of stable lifting and convenient storage.

[0004] Specifically, a fan device provided by an embodiment of the present utility model includes: a first housing; a second housing nested within the first housing; a driving member located within the first housing; a lifting structure located within the first housing, and the lifting structure includes: a first gear connected to the output end of the driving member; a second gear meshing with the first gear; a first driven assembly respectively connected to the second gear and the second housing; the first driven assembly can move as the second gear rotates to drive the second housing to extend out of or retract into the first housing.

[0005] In some embodiments, the axes of the first gear and the second gear are parallel to each other, the fan device has an air outlet, and the air outlet is provided on the second housing or formed between the second housing and the first housing.

[0006] In some embodiments, the first driven assembly includes: a driven rod eccentrically connected to the side surface of the second gear; the driven rod can rotate around the axis of the second gear as the second gear rotates; a lifting member, one end of which is connected to the second housing and the other end is connected to the driven rod; the lifting member can be driven by the driven rod to reciprocate in a first direction when the driven rod rotates, so as to drive the second housing to lift along the first direction.

[0007] In some embodiments, when the distance between the second housing and the first housing reaches the maximum value, the orthographic projections of the driven rod, the axis of the first gear, and the axis of the second gear on a plane perpendicular to the axis of the first gear are located on the same straight line, and the driven rod is located on the side of the second gear away from the first gear.

[0008] In some embodiments, a connecting groove is provided on the lifting member, and the driven rod extends into the connecting groove; the width of the connecting groove in the second direction is greater than or equal to twice the distance from the driven rod to the axis of the second gear, and the second direction is perpendicular to the first direction and perpendicular to the axial direction of the second gear.

[0009] In some embodiments, the lifting structure further includes: a transmission shaft arranged along the axis direction of the second gear; a driven wheel coaxially arranged with the second gear, and the transmission shaft is connected between the driven wheel and the second gear; a second driven assembly respectively connecting the driven wheel and the second housing; the second driven assembly can move as the driven wheel rotates to drive the second housing to lift.

[0010] In some embodiments, the driven wheel has the same structure as the second gear, and the structure of the second driven assembly is the same as that of the first driven assembly; the lifting structure further includes a third gear, which has the same structure as the first gear and meshes with the driven wheel.

[0011] In some embodiments, the lifting structure further includes: a first fixing seat, on which the first gear and the second gear are installed, and a sliding groove extending in the first direction is provided on one of the first fixing seat and the lifting member, and a sliding rail extending in the first direction is provided on the other, and the sliding groove is slidably connected to the sliding rail.

[0012] In some embodiments, the first fixing seat includes a first half-shell and a second half-shell. The first half-shell has a receiving cavity, and the first gear and the second gear are located in the receiving cavity. An isolating member is provided between the lifting member and the second gear, and the isolating member is fixed on the first half-shell. A through hole for the driven rod to extend out is provided on the isolating member; the second half-shell is joined with the first half-shell; the lifting member is clamped between the first half-shell and the second half-shell, and the lifting member is located between the second gear and the second half-shell.

[0013] In some embodiments, the fan device further includes a position detection component provided on the first fixing seat, and a guiding portion is provided on the first driven assembly, and the position detection component is used to detect the height position of the guiding portion along the first direction.

[0014] In some embodiments, a guide groove extending in the first direction is formed in the first fixing seat, the guiding portion is fixed on the lifting member and located in the guide groove, the position detection assembly includes two position detection units, and the two position detection units are respectively arranged at opposite ends of the guide groove along the first direction.

[0015] In some embodiments, the lifting member includes a lifting main body and a frame body, the frame body covers at least a part of the lifting main body; the sliding rail or the sliding groove is arranged on the frame body; a connecting portion connected to the second housing is formed by bending one end of the lifting main body away from the second gear; and / or, the frame body is a plastic part and the lifting main body is a metal sheet.

[0016] As can be seen from the above, the above embodiments of the present invention can achieve one or more of the following beneficial effects: stable transmission can be realized by arranging the first gear and the second gear meshing with each other in the lifting structure, the lifting of the second housing can be realized in combination with the first driven assembly, which is convenient for storage, and the gear structure occupies less space, so that the space utilization rate in the fan device can be improved.

[0017] Through the following detailed description with reference to the accompanying drawings, other aspects and features of the present invention become obvious. However, it should be understood that the drawings are designed only for the purpose of explanation and not as a limitation of the scope of the present invention. It should also be understood that, unless otherwise indicated, the drawings are not necessarily drawn to scale, and they are only intended to conceptually illustrate the structures and processes described herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following will combine the accompanying drawings to detail the specific embodiments of the present invention.

[0019] Figure 1 It is a schematic structural diagram of the second housing in the extended state in the fan device provided by the embodiment of the present invention.

[0020] Figure 2 For Figure 1 It is a schematic structural diagram of the second housing in the retracted state in the shown fan device.

[0021] Figure 3 For Figure 1 It is an exploded structural diagram of the shown fan device.

[0022] Figure 4 For Figure 1 It is a schematic structural diagram of the first lifting assembly in the shown fan device.

[0023] Figure 5 For Figure 4 It is an exploded structural diagram of the shown first lifting assembly.

[0024] Figure 6 For Figure 4 the exploded structural schematic diagram of the first lifting assembly shown from another angle.

[0025] Figure 7 For Figure 4 the structural schematic diagram of the first lifting assembly shown from another perspective.

[0026] Figure 8 For Figure 4 the schematic diagram of a partial structure of the first lifting assembly when the second housing is in the extended state.

[0027] Figure 9 For Figure 4 the schematic diagram of a partial structure of the first lifting assembly when the second housing is in the retracted state.

[0028] Figure 10 For Figure 1 the exploded structural schematic diagram of the second lifting assembly in the fan device shown.

[0029]

Explanation of Reference Numerals

[0030] 10. First housing; 11. Air inlet; 20. Second housing; 21. Air outlet; 30. Driving member; 40. Lifting structure; 41. First lifting assembly; 411. First gear; 412. Second gear; 413. First driven assembly; 4131. Driven rod; 4132. Lifting member; 41321. Connecting groove; 41322. Slide rail; 41323. Lifting main body; 41324. Frame; 4133. Guiding portion; 414. First fixing seat; 4141. First half shell; 41411. Accommodating cavity; 4142. Second half shell; 4143. Guide groove; 4144. Chute; 415. Isolating member; 42. Second lifting assembly; 421. Driven wheel; 422. Third gear; 423. Second driven assembly; 424. Second fixing seat; 4241. Third half shell; 4242. Fourth half shell; 43. Transmission shaft; 50. Fan structure; 60. Heating assembly; 70. Electric control assembly; 80. Position detection assembly; 81. Position detection unit. Detailed Embodiments

[0031] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the following detailed description of the specific embodiments of the present utility model will be given in conjunction with the accompanying drawings.

[0032] In order to enable those of ordinary skill in the art to better understand the technical solutions of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] It should be noted that the terms "first", "second", etc. in the description and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0034] It should also be noted that the division of multiple embodiments in the present utility model is only for convenience of description and should not constitute a special limitation. The features in various embodiments can be combined and cross-referenced without conflict.

[0035] An embodiment of the present application provides a fan device. In a specific embodiment of this embodiment, the fan device is a skirting heater. Of course, in other specific embodiments, the fan device can also be a device that blows cold air without a heating component.

[0036] Referring to Figure 1 , an embodiment of the present utility model provides a fan device, which includes a first housing 10 and a second housing 20. The second housing 20 is nested inside the first housing 10. Referring to Figure 3 , the fan device further includes a driving member 30 and a lifting structure 40 located inside the first housing 10. The lifting structure 40 includes a first lifting assembly 41. Referring to Figure 4 and Figure 5, the first lifting assembly 41 includes a first gear 411, a second gear 412, and a first driven assembly 413. The axis of the first gear 411 is connected to the output end of the driving member 30. The second gear 412 meshes with the first gear 411, and the axes of the first gear 411 and the second gear 412 are parallel to each other. The first driven assembly 413 is respectively connected to the second gear 412 and the second housing 20. The first driven assembly 413 can move as the second gear 412 rotates to drive the second housing 20 to extend or retract from the first housing 10.

[0037] Referring to Figure 3 , the fan device further includes a fan structure 50 and an electric control assembly 70 disposed in the first housing 10. The fan structure 50 includes structures such as an impeller and a fan motor. The electric control assembly 70 is electrically connected to the fan motor and the driving member 30, and the driving member 30 is a driving motor, for example. Before using the fan device, the second housing 20 is in the state of Figure 2 retracted into the first housing 10 as shown. When using the fan device, the electric control assembly 70 controls the driving member 30 to drive the first gear 411 to rotate. The second gear 412 rotates synchronously with the first gear 411 and drives the first driven assembly 413 to move, so that the second housing 20 extends from the first housing 10 to present the state shown in Figure 1 . The fan device has an air outlet 21, which is disposed on the second housing 20, for example. When the second housing 20 retracts into the first housing 10, the air outlet 21 is hidden in the first housing 10. When the second housing 20 extends from the first housing 10, the air outlet 21 is exposed outside the first housing 10 at this time. Alternatively, the air outlet 21 is formed between the first housing 10 and the second housing 20. When the second housing 20 extends from the first housing 10, the gap between the second housing 20 and the first housing 10 serves as the air outlet 21. When the second housing 20 retracts into the first housing 10, the top of the second housing 20 seals the gap to block the air outlet 21. The specific setting of the air outlet 21 is not limited in this embodiment. After the air outlet 21 is exposed, the electric control assembly 70 controls the fan motor to drive the impeller to rotate to generate an air flow. The air flow enters from the air inlet 11 and blows out from the air outlet 21 to achieve the blowing effect. In some embodiments, the fan device further includes a heating assembly 60 disposed in the first housing 10. The heating assembly 60 is used to generate heat and can be specifically disposed between the impeller and the air outlet 21, so that the air flow generated by the impeller is heated by the heating device and then blows out from the air outlet to achieve the effect of blowing warm air.

[0038] Specifically, the first gear 411 and the second gear 412 are flat gears.

[0039] In this embodiment, stable transmission can be achieved by arranging the first gear 411 and the second gear 412 to mesh with each other in the lifting structure 40 (the first lifting component 41). In combination with the first driven component 413, the lifting of the second housing 20 can be realized, and the gear structure occupies less space, which can improve the space utilization rate inside the fan device.

[0040] In some embodiments, the pitch diameter of the second gear 412 is larger than that of the first gear 411. The driving member 30 directly drives the first gear 411 with a smaller pitch diameter, while the second gear 412 with a larger pitch diameter rotates by meshing with the first gear 411. Therefore, a smaller driving force can be used to drive the second gear 412, and thus the volume of the driving member 30 can also be reduced, improving the space utilization rate.

[0041] In some embodiments, referring to Figure 5 、 Figure 8 and Figure 9 。The first driven component 413 includes a driven rod 4131 and a lifting member 4132. The driven rod 4131 is eccentrically connected to the side surface of the second gear 412. The driven rod 4131 can rotate around the axis of the second gear 412 as the second gear 412 rotates. One end of the lifting member 4132 is connected to the second housing 20, and the other end is connected to the driven rod 4131. The lifting member 4132 can be driven by the driven rod 4131 to reciprocate in the first direction when the driven rod 4131 rotates, so as to drive the second housing 20 to lift in the first direction. Among them, the first direction is the up and down direction in Figures 1 to 3 , and the driven rod 4131 can be arranged near the root circle position of the second gear 412, which can achieve a larger lifting distance of the second housing 20. When the second housing 20 rises to the highest position, that is, when the distance between the second housing 20 and the first housing 10 reaches the maximum value, reference can be made to Figure 8 , at this time, the orthographic projections of the driven rod 4131, the axis of the second gear 412, and the axis of the first gear 411 on the plane perpendicular to the axis of the first gear 411 are located on the same straight line, and a mechanical dead point of three points in a line can be formed. At this time, even if a downward pressure is applied to the top of the second housing 20, the second housing 20 can still remain stationary or in a balanced state without shaking. Compared with the existing lifting devices, the stability is higher. And combined with the design that the second gear 412 is larger than the first gear 411, a larger height of lifting can be achieved by a smaller driving member 30. Among them, the distance between the second housing 20 and the first housing 10 can be based on, for example, the distance between the top of the second housing 20 and the bottom of the first housing 10.

[0042] In some embodiments, referring to Figure 5 、 Figure 8 and Figure 9, a connecting groove 41321 is provided on the lifting member 4132, and the driven rod 4131 extends into the connecting groove 41321. The width of the connecting groove 41321 in the second direction is greater than or equal to twice the distance from the driven rod 4131 to the axis of the second gear 412. The second direction is perpendicular to the first direction and perpendicular to the axial direction of the second gear 412. The axial direction of the second gear 412 is the length direction of the fan device, that is, Figure 3 the horizontal direction from left to right in Figure 3 , and the second direction is the horizontal direction from front to back in Figure 3 . When the driven rod 4131 rotates with the rotation of the second gear 412, its movement can be decomposed into lifting in the first direction and horizontal movement in the second direction. Through the setting of the connecting groove 41321, the driven rod 4131 will push the lifting member 4132 to move in the first direction, and the driven rod 4131 slides in the connecting groove 41321 in the second direction. Therefore, the movement of the driven rod 4131 will not cause the lifting member 4132 to move in the second direction, and the shaking of the second housing 20 during the lifting process can be avoided, so that the lifting is more stable.

[0043] In some embodiments, referring to Figure 3 , the lifting structure 40 further includes a transmission shaft 43 and a second lifting assembly 42. The transmission shaft 43 is arranged along the axis direction of the second gear 412. The second lifting assembly 42 includes a driven wheel 421 and a second driven assembly 423. The driven wheel 421 is coaxially arranged with the second gear 412, and the transmission shaft 43 is connected between the driven wheel 421 and the second gear 412. The second driven assembly 423 is respectively connected to the driven wheel 421 and the second housing 20. The second driven assembly 423 can move with the rotation of the driven wheel 421 to drive the second housing 20 to lift. The transmission between the first lifting assembly 41 and the second lifting assembly 42 is realized through the transmission shaft 43, so that the two opposite sides of the fan device in the direction along the axis of the second gear 412 can be lifted synchronously, making the lifting of the second housing 20 more balanced and stable. The driven wheel 421 can be a gear or other wheel structures.

[0044] In some embodiments, the structure of the driven wheel 421 is the same as that of the second gear 412, and the structure of the second driven assembly 423 is the same as that of the first driven assembly 413. The lifting structure 40 (the second lifting assembly 42) further includes a third gear 422, and the structure of the third gear 422 is the same as that of the first gear 411 and meshes with the driven wheel 421. By setting the meshing of the driven wheel 421 and the third gear 422 in the second lifting assembly 42, the transmission can be made more accurate, and the movements of the first lifting assembly 41 and the second lifting assembly 42 are more synchronous, so as to ensure the stability and balance during the lifting process of the second housing 20.

[0045] In some embodiments, referring to Figure 4 、 Figure 5and Figure 6 The lifting structure 40 (the first lifting component 41) further includes a first fixing seat 414. The first gear 411 and the second gear 412 are mounted on the first fixing seat 414. A sliding groove 4144 extending in the first direction is provided on one of the first fixing seat 414 and the lifting member 4132, and a sliding rail 41322 extending in the first direction is provided on the other. The sliding groove 4144 is slidably connected to the sliding rail 41322. Figure 7 For the embodiment in which the sliding groove 4144 is provided on the first fixing seat 414 and the sliding rail 41322 is provided on the lifting member 4132, the cooperation between the sliding groove 4144 and the sliding rail 41322 can guide and limit the movement of the lifting member 4132, ensuring the stable lifting of the second housing 20.

[0046] Specifically, referring to Figure 5 and Figure 6 and, the first fixing seat 414 includes a first half shell 4141 and a second half shell 4142. The first half shell 4141 has a receiving cavity 41411. The first gear 411 and the second gear 412 are located in the receiving cavity 41411. The second half shell 4142 is joined with the first half shell 4141. The lifting member 4132 is clamped between the first half shell 4141 and the second half shell 4142, and the lifting member 4132 is located between the second gear 412 and the second half shell 4142. In this embodiment, the lifting member 4132 can be further limited by the first fixing seat 414, and the structure and space of the first fixing seat 414 can be fully utilized. In some embodiments, referring to Figure 10 the second lifting component 42 may be provided with a second fixing seat 424 referring to the structure of the first lifting component 41. The second fixing seat 424 and the second driven component 423 can also be limited by a sliding rail and a sliding groove. The second fixing seat 424 includes a third half shell 4241 and a fourth half shell 4242. The second driven component 423 is, for example, clamped between the third half shell 4241 and the fourth half shell 4242.

[0047] In some embodiments, referring to Figure 5 the lifting member 4132 includes a lifting main body 41323 and a frame 41324. The frame 41324 covers at least a part of the lifting main body 41323. A sliding rail 41322 or a sliding groove 4144 is provided on the frame 41324. The frame 41324 is, for example, a plastic part, which can be made of plastic material and can be formed by an injection molding process, facilitating the processing of the sliding rail 41322 or the sliding groove 4144. The lifting main body 41323 is, for example, a metal plate, which can provide better strength.

[0048] In some embodiments, the end of the lifting main body 41323 away from the second gear 412 bends and extends in a third direction, and the third direction is cross - set with the first direction. In some specific embodiments, for example Figure 5The third direction shown is the axial direction of the second gear 412. In some embodiments, the lifting member 4132 can be connected to the second housing 20 through a bent and extended portion of the lifting main body 41323, which has better strength and a larger contact area.

[0049] In some embodiments, the first lifting assembly 41 further includes a spacer 415 located between the lifting member 4132 and the second gear 412. The spacer 415 is provided with, for example, a through hole for the driven rod 4131 to extend through, and a through hole for the transmission shaft 43 to pass through. The spacer 415 can specifically be a plate-like structure, which can isolate the lifting member 4132 and the second gear 412, prevent the second gear 412 from disengaging from the accommodation cavity 41411, and can reduce the friction and wear between the lifting member 4132 and the second gear 412, making the lifting more smooth and stable.

[0050] In some embodiments, the fan device further includes a position detection assembly 80. The position detection assembly 80 is arranged on the first fixing seat 414, and a guiding portion 4133 is arranged on the first driven assembly 413. The position detection assembly 80 is used to detect the height position of the guiding portion 4133 along the first direction. The position detection assembly 80 can include a plurality of microswitches. The plurality of microswitches are, for example, electrically connected to the electronic control assembly 70. When the guiding portion 4133 moves with the movement of the first driven assembly 413 and contacts a certain microswitch, the microswitch feeds back a corresponding signal to the electronic control assembly 70. The electronic control assembly 70 can control the driving member 30 to perform corresponding actions according to the signal fed back by the microswitch, so as to realize the control of the lifting height of the second housing 20. In some embodiments, the driven rod 4131 can be used as the guiding portion 4133, or a guiding portion 4133 can also be separately arranged on the lifting member 4132.

[0051] In some embodiments, a guide groove 4143 extending in a first direction is formed in the first fixing base 414. The guiding portion 4133 is fixed to the lifting member 4132 and is slidably connected to the guide groove 4143. The position detection assembly 80 includes two position detection units 81, and the two position detection units 81 are respectively arranged at opposite ends of the guide groove 4143 along the first direction. The two position detection units 81 are, for example, microswitches. During the process of raising the second housing 20 to expose the air outlet 21, when the guiding portion 4133 moves to the top of the guide groove 4143 along with the lifting member 4132 and contacts the position detection unit 81 arranged at the top, it indicates that the second housing 20 reaches the highest position. At this time, the electronic control assembly 70 controls the driving member 30 to stop operating according to the signal of the position detection unit 81, so that the second housing 20 can be maintained at this highest position. When the second housing 20 is lowered to be retracted into the first housing 10, when the guiding portion 4133 moves to the bottom of the guide groove 4143 along with the lifting member 4132 and contacts the position detection unit 81 arranged at the bottom, it indicates that the second housing 20 reaches the lowest position. At this time, the electronic control assembly 70 controls the driving member 30 to stop operating according to the signal of the position detection unit 81, so that the second housing 20 can be maintained at this lowest position. By arranging the two position detection units 81, it can be ensured that the second housing 20 is stably maintained at the highest position and the lowest position, and the movement of the lifting member 4132 can be further guided and limited by the limitation of the guiding portion 4133 by the guide groove 4143, ensuring stable lifting and lowering.

[0052] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention in any form. Although the present invention has been disclosed above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to obtain equivalent embodiments with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A fan device, characterized in that: include: A first housing (10); A second shell (20) nested in the first shell (10); A driving member (30) located in the first housing (10); A lifting structure (40) is located in the first housing (10), and the lifting structure (40) comprises: a first gear (411) connected to an output end of the driving member (30); The second gear (412) is meshed with the first gear (411); the first driven component (413) is respectively connected to the second gear (412) and the second housing (20); the first driven component (413) can move with the rotation of the second gear (412) to drive the second housing (20) to extend or retract into the first housing (10).

2. The fan device according to claim 1, characterized in that The axes of the first gear (411) and the second gear (412) are parallel to each other. The fan device has an air outlet (21), and the air outlet (21) is arranged on the second shell (20), or the air outlet (21) is formed between the second shell (20) and the first shell (10).

3. The fan device according to claim 1, characterized in that The first driven component (413) comprises: A driven rod (4131), wherein the driven rod (4131) is eccentrically connected to a side surface of the second gear (412); the driven rod (4131) can rotate around the axis of the second gear (412) as the second gear (412) rotates; A lifting member (4132) has one end connected to the second shell (20) and the other end connected to the driven rod (4131); when the driven rod (4131) rotates, the lifting member (4132) can be driven by the driven rod (4131) to reciprocate in the first direction, so as to drive the second shell (20) to rise and fall along the first direction.

4. The fan device according to claim 3, characterized in that When the distance between the second housing (20) and the first housing (10) reaches a maximum value, the direct projections of the driven rod (4131), the axis of the first gear (411) and the axis of the second gear (412) on a plane perpendicular to the axis of the first gear (411) are located on the same straight line, and the driven rod (4131) is located on a side of the second gear (412) away from the first gear (411).

5. The fan device according to claim 3, characterized in that The lifting member (4132) is provided with a connecting groove (41321), and the driven rod (4131) extends into the connecting groove (41321); the width of the connecting groove (41321) along the second direction is greater than or equal to twice the distance from the driven rod (4131) to the axis of the second gear (412), and the second direction is perpendicular to the first direction and perpendicular to the axial direction of the second gear (412).

6. The fan device according to claim 1, wherein: The lifting structure (40) further comprises: a transmission shaft (43), wherein the transmission shaft (43) is arranged along the axial direction of the second gear (412); A driven wheel (421) is coaxially arranged with the second gear (412), and the transmission shaft (43) is connected between the driven wheel (421) and the second gear (412); The second driven component (423) is respectively connected to the driven wheel (421) and the second housing (20); the second driven component (423) can move along with the rotation of the driven wheel (421) to drive the second housing (20) to rise and fall.

7. The fan device according to claim 6, characterized in that The driven wheel (421) has the same structure as the second gear (412), and the second driven component (423) has the same structure as the first driven component (413); the lifting structure (40) further includes a third gear (422), and the third gear (422) has the same structure as the first gear (411) and is meshed with the driven wheel (421).

8. The fan device according to claim 3, characterized in that The lifting structure (40) also includes: a first fixed seat (414), the first gear (411) and the second gear (412) are installed on the first fixed seat (414), one of the first fixed seat (414) and the lifting member (4132) is provided with a slide groove (4144) extending along the first direction, and the other is provided with a slide rail (41322) extending along the first direction, and the slide groove (4144) is slidably connected to the slide rail (41322).

9. The fan device according to claim 8, characterized in that The first fixing seat (414) comprises a first half shell (4141) and a second half shell (4142), the first half shell (4141) having a containing cavity (41411), the first gear (411) and the second gear (412) being located in the containing cavity (41411), an isolating member (415) being provided between the lifting member (4132) and the second gear (412), the isolating member (415) being fixed on the first half shell (4141), and the isolating member (415) being provided with a through hole for the driven rod (4131) to extend out; the second half shell (4142) and the first half shell (4141) are assembled with each other; the lifting member (4132) is sandwiched between the first half shell (4141) and the second half shell (4142), and the lifting member (4132) is located between the second gear (412) and the second half shell (4142).

10. The fan device according to claim 8, characterized in that The invention also comprises a position detection component (80), wherein the position detection component (80) is arranged on the first fixed seat (414), and a guide portion (4133) is arranged on the first driven component (413), and the position detection component (80) is used to detect the height position of the guide portion (4133) along the first direction.

11. The fan device according to claim 10, characterized in that The first fixed seat (414) is provided with a guide groove (4143) extending along the first direction, the guide portion (4133) is fixed on the lifting member (4132) and is located in the guide groove (4143), and the position detection assembly (80) includes two position detection units (81), and the two position detection units (81) are respectively arranged at two opposite ends of the guide groove (4143) along the first direction.

12. The fan device according to claim 8, wherein The lifting member (4132) comprises a lifting body (41323) and a frame (41324); the frame (41324) covers at least a portion of the lifting body (41323); the frame (41324) is provided with the slide rail (41322) or the slide groove (4144); One end of the lifting body (41323) away from the second gear (412) is bent to form a connection portion connected to the second shell (20); and / or the frame (41324) is a plastic part, and the lifting body (41323) is a metal sheet.

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