Fan

Abstract

The fan comprises a machine head assembly, a machine body assembly and a head shaking assembly, and the head shaking assembly is arranged between the machine head assembly and the machine body assembly and connected with the machine head assembly and the machine body assembly. The head shaking assembly comprises a head shaking motor and a clutch mechanism, the head shaking motor is configured to be capable of driving the machine head assembly to rotate around a first axis through the first transmission path and driving the machine head assembly to rotate around a second axis through the second transmission path, and the direction of the second axis intersects with the direction of the first axis. The clutch mechanism is configured to be capable of controlling connection and disconnection of the first transmission path and the second transmission path. According to the fan, the head shaking assembly is lower in height and closer to the supporting center of the base plate, the problem of gravity center deviation is solved, and the whole fan is more stable. Besides, the fan can realize bidirectional head shaking and unidirectional head shaking only by adopting a single head shaking motor, and start and stop of head shaking in corresponding directions are independently controlled through a clutch mechanism, so that the fan needs fewer motors, wiring is easier, and left and right head shaking loads are smaller.

Description

Technical Field

[0001] The present application relates to the field of electrical equipment technology, and in particular to a fan. Background Art

[0002] In order to expand the air supply range, many fans have a shaking head function. Specifically, the fan with the shaking head function is usually configured with a shaking head motor to drive the head of the fan to rotate to achieve the shaking head.

[0003] However, in the related art, in order to achieve the up and down and left and right shaking, two motors need to be controlled independently, which is not only costly and inefficient to assemble, but also occupies a large space and leads to a bloated appearance. In addition, the motor for controlling the up and down shaking needs to be installed at the head of the machine, which is easy to cause a large deviation from the center of the chassis of the fan, making the center of gravity of the whole machine higher and offset, which is not conducive to the stability of the whole machine. Summary of the invention

[0004] Based on this, it is necessary to provide a fan that can improve the stability of the entire machine in order to solve the above problems.

[0005] A fan, comprising a head assembly, a body assembly and an oscillating head assembly, wherein the oscillating head assembly is arranged between the head assembly and the body assembly and respectively connects the two; the oscillating head assembly comprises:

[0006] an oscillating motor configured to drive the head assembly to rotate about a first axis through a first transmission path and to drive the head assembly to rotate about a second axis through a second transmission path, wherein the direction of the second axis intersects the direction of the first axis; and

[0007] A clutch mechanism is configured to control the on and off of the first transmission path and the second transmission path.

[0008] In one embodiment, the shaking head assembly also includes an assembly support, a first rotating seat and a second rotating seat. The head assembly is rotatably arranged on the assembly support around the first axis. The first rotating seat and the second rotating seat are rotatably cooperated around the second axis. The assembly support is arranged on the first rotating seat. The second rotating seat is fixedly connected to the body assembly of the fan, and the shaking head motor is arranged on the first rotating seat.

[0009] In one of the embodiments, the fuselage assembly includes a support rod and a chassis, the chassis has a support surface on a side facing away from the support rod, and the axis of the support rod coincides with the second axis and passes through the geometric center of the support surface.

[0010] In one embodiment, the shaking head motor has a driving shaft and a transmission shaft, the driving shaft is drivingly connected to the head assembly, the transmission shaft is drivingly connected to the driving shaft, and is locked in rotation with the second rotating seat in the rotation around the second axis to form the second transmission path.

[0011] In one embodiment, the drive shaft has a first meshing end surface at one end in the axial direction, and the transmission shaft has a second meshing end surface at one end in the axial direction, and the first meshing end surface and the second meshing end surface are configured to mesh with each other;

[0012] The clutch mechanism has a paddle portion, which is transmission-connected to the drive shaft and / or the transmission shaft and is configured to drive the transmission shaft and the drive shaft to engage with and disengage from each other along the axial direction.

[0013] In one embodiment, the cross section of the end of the transmission shaft away from the second engagement end surface is non-circular, and the second rotating seat has a matching shaft hole matching with the end of the transmission shaft;

[0014] And / or, the first rotating seat has a rotating shaft structure, the rotating shaft structure extends along the direction of the second axis, and the second rotating seat has a rotating groove matched with the rotating shaft structure.

[0015] In one embodiment, the fan further comprises a transmission mechanism, wherein the transmission mechanism transmission-connects the oscillating motor and the head assembly to form the first transmission path;

[0016] The transmission mechanism has a transmission state and a non-transmission state. The clutch mechanism is transmission-connected to the transmission mechanism and is configured to drive the transmission mechanism to switch between the transmission state and the non-transmission state.

[0017] In one embodiment, the transmission mechanism includes a rack and a transmission gear, wherein the rack is disposed on the head assembly and is arranged around the first axis;

[0018] The transmission gear comprises a first gear and a second gear, the first gear is configured such that an axis is parallel to the second axis, and the second gear is configured such that an axis is parallel to the first axis;

[0019] The first gear has a first conical tooth portion, and the second gear has a first conical tooth portion and a second cylindrical tooth portion, the first conical tooth portion is meshed with the first conical tooth portion, and the second cylindrical tooth portion is meshed with the rack; the first gear is configured to be movably set and has a transmission position and a non-transmission position; the clutch mechanism is transmission-connected to the first gear and is configured to be able to drive the first gear to switch between the transmission position and the non-transmission position; when the first gear is in the transmission position, it is meshed with the second gear, and the transmission mechanism is in a transmission state; when the first gear is in the non-transmission position, it is disengaged from the second gear, and the transmission mechanism is in a non-transmission state.

[0020] In one embodiment, the clutch mechanism includes an operating member and a first buckle, the operating member has a driving portion and a locking portion, the driving portion cooperates with the first gear, and the operating member drives the first gear to move through the driving portion; when the operating member drives the first gear to move to the transmission position and / or the non-transmission position, the locking portion engages with the first buckle.

[0021] In one embodiment, the operating member is configured to be movable along the engagement direction until the locking portion engages with the first buckle; the clutch mechanism further comprises a first elastic member, the first elastic member cooperates with the operating member and is configured to provide a driving force for driving the operating member to move in a direction opposite to the engagement direction;

[0022] The first buckle has a first guide surface, the first guide surface intersects with the engagement direction and is used to generate a guide for engaging the first buckle;

[0023] The clutch mechanism also includes a second elastic member, and the operating member also has an unlocking portion, wherein the unlocking portion is arranged upstream of the locking portion in the engagement direction, and the unlocking portion has a contact surface and a second guide surface, wherein the contact surface is located downstream of the second guide surface in the engagement direction; the unlocking portion is configured to be able to move relative to the locking portion in a direction parallel to the engagement direction, and the second elastic member is arranged between the locking portion and the unlocking portion, and can be compressed until the contact surface abuts against the locking portion; the second guide surface intersects with the engagement direction and is used to generate a guide for disengaging from the first buckle.

[0024] In one embodiment, the clutch mechanism includes an operating member, and the operating member is configured to be movable between a first position, a second position, and a third position that are sequentially arranged;

[0025] When in the first position, the operating member cuts off the first transmission path and the second transmission path is connected; when in the second position, both the first transmission path and the second transmission path are connected; when in the third position, the operating member cuts off the second transmission path and the first transmission path is connected.

[0026] In the above-mentioned fan, the shaking head assembly for driving the head assembly to shake its head is arranged between the head assembly and the body assembly, rather than on the head assembly. In this way, the height of the shaking head assembly is lower, and being arranged on the body assembly can make it closer to the support center of the chassis, thereby improving the problem of center of gravity displacement and making the fan more stable. In addition, the fan drives the head assembly to shake its head up and down and left and right through the shaking head motor, and controls the on and off of the transmission path of the shaking head motor through the clutch mechanism, thereby independently controlling the start and stop of the shaking head in the corresponding direction, that is, the fan only uses a single shaking head motor to achieve two-way shaking head and two unidirectional shaking heads. In this way, the fan requires fewer motors and easier wiring, and when shaking the head left and right, the shaking head motor does not need to drive another shaking head motor, so the driving load is smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 Schematic diagram of the structure of a fan in one embodiment of the present application.

[0029] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the fan shown.

[0030] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of the fan is shown.

[0031] Figure 4 for Figure 3 The enlarged structural schematic diagram of the fan at point A when the locking portion of the operating member is not locked in the first buckle is shown.

[0032] Figure 5 for Figure 4 The enlarged structural schematic diagram of the fan at position B is shown.

[0033] Figure 6 for Figure 3 The enlarged structural schematic diagram of the fan at point A when the locking portion of the operating member is snapped into the first buckle is shown.

[0034] Figure 7 for Figure 3 The enlarged structural schematic diagram of the fan at point A when the unlocking portion of the operating member is snapped into the first buckle is shown.

[0035] Figure 8 for Figure 1 A schematic diagram of the partial cross-sectional structure of the shaking head assembly of the fan is shown.

[0036] Fig. 9 for Figure 1 Schematic diagram of the structure of the rack in the fan shown.

[0037] Fig.10 for Figure 1 A schematic structural diagram of the first gear in the fan shown.

[0038] Fig.11 for Figure 1 A schematic diagram of the structure of the second gear in the fan shown.

[0039] Fig.12 for Figure 1 Schematic diagram of the structure of the driving gear in the fan shown.

[0040] Fig.13 for Figure 1 A schematic structural diagram of the housing of the shaking head assembly in the fan is shown.

[0041] Fig.14 for Figure 1 A schematic diagram of the partial structure of the operating parts in the fan shown.

[0042] Fig.15 for Figure 1 The schematic diagram of the structure of the locking part of the operating part in the fan is shown.

[0043] Fig.16 for Figure 1 A schematic structural diagram of the unlocking portion of the operating member in the fan is shown.

[0044] Fig.17 for Figure 1 The schematic diagram of the structure of the first rotating seat in the fan is shown.

[0045] Fig.18 for Figure 1 The schematic diagram of the structure of the oscillating motor in the fan is shown.

[0046] Fig.19 for Figure 1 The schematic diagram of the structure of the cooperation between the second rotating seat and the fuselage assembly in the fan is shown.

[0047] Description of reference numerals: 100, fan; 10, head assembly; 11, main motor; 12, fan blade; 13, housing; 131, mounting portion; 30, body assembly; 31, support rod; 33, chassis; 50, oscillating assembly; 51, oscillating motor; 511, driving gear; 513, driving shaft; 5131, first meshing end surface; 515, transmission shaft; 5151, second meshing end surface; 517, motor internal gear; 53 , clutch mechanism; 531, operating member; 5311, driving part; 5312, locking part; 5313, second locking surface; 5314, third guide surface; 5315, concave hole; 5316, unlocking part; 5317, contact surface; 5318, second guide surface; 5319, receiving groove; 5310, main body; 5330, paddle part; 533, first buckle; 5331, first guide surface; 5332, first locking surface ; 535, first elastic member; 536, second elastic member; 537, third elastic member; 55, transmission mechanism; 551, first gear; 5511, first conical tooth portion; 5512, first cylindrical tooth portion; 552, second gear; 5521, second conical tooth portion; 5522, second cylindrical tooth portion; 553, rack; 5531, first tooth portion; 5533, second tooth portion; 5535, strip-shaped avoidance; 571, Arc-shaped mating surface; 572, support body; 573, housing; 5731, mounting groove; 5733, gear groove; 5735, assembly groove; 574, supporting roller; 591, first rotating seat; 5911, column; 5913, rotating shaft structure; 5915, slot; 593, second rotating seat; 5931, mating shaft hole; 5932, rotating groove; 5933, second buckle; 5934, annular groove; 70, wiring. DETAILED DESCRIPTION

[0048] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0049] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore it should not be understood as a limitation on the present application.

[0050] In addition, if the term "and / or" appears, "and / or" is merely a way to describe the association relationship between associated objects, and indicates that three relationships may exist, for example, A and / or B can represent the association relationship between A and B: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that there is an "or" relationship between the associated objects before and after it. If the terms "first" and "second" appear, these terms are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "multiple" appears, the meaning of "multiple" is at least two, such as two, three, four, five, etc., unless otherwise clearly and specifically defined.

[0051] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0053] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0054] In addition to the background technology, in the related technology, the two motors used to achieve the shaking of the head are usually dispersed in space layout, which will also increase the number of wiring. The motor that controls the up and down shaking of the head is located at the top and away from the chassis support center. In addition, the motor that controls the left and right shaking of the head not only needs to drive the head, but also needs to drive another motor synchronously. The driving load is large, and the motor driving force is required to be higher, which will also lead to increased costs.

[0055] See also Figures 1 to 3 In view of the above problems, a fan 100 provided in an embodiment of the present application includes a head assembly 10, a body assembly 30 and an oscillating assembly 50. The oscillating assembly 50 is disposed between the head assembly 10 and the body assembly 30 and connects the two. The oscillating assembly 50 includes an oscillating motor 51 and a clutch mechanism 53. The oscillating motor 51 is configured to drive the head assembly 10 to rotate around a first axis through a first transmission path and to drive the head assembly 10 to rotate around a second axis through a second transmission path. The direction of the second axis intersects with the direction of the first axis. The clutch mechanism 53 is configured to control the on and off of the first transmission path and the second transmission path.

[0056] The fan 100 may be, but is not limited to, a circulation fan. Specifically, the body assembly 30 includes a support rod 31 and a chassis 33, the oscillating assembly 50 is disposed at the top of the support rod 31, the head assembly 10 is disposed on the oscillating assembly 50, and the chassis 33 is connected to the bottom end of the support rod 31. It can be understood that in order to achieve its normal function, the head assembly 10 includes a main motor 11, a fan blade 12, a housing 13, etc. Among them, the main motor 11 and the fan blade 12 are installed in the housing 13. The main motor 11 is connected to the fan blade 12 in a transmission manner, and is used to drive the fan blade 12 to rotate to form an air supply airflow.

[0057] The transmission path refers to the transmission path of the output torque of the oscillating motor 51. The oscillating motor 51 can drive the head assembly 10 directly or indirectly. Indirect drive means that there is a transmission mechanism 55 between the oscillating motor 51 and the head assembly 10. The transmission mechanism 55 is used to transmit torque and is in the transmission path as a part of the transmission path.

[0058] The direction of the second axis intersects with the direction of the first axis, that is, the head assembly 10 can rotate in two different directions. Among them, the direction of the first axis is the first direction, and the first direction intersects with the height direction of the fan 100. The height direction of the fan 100 is the vertical direction when it is in normal use. The direction of the second axis is the second direction, and the second direction intersects with the horizontal direction. It can be understood that the second direction also intersects with the first direction. For ease of understanding, the following description will take the first direction as the horizontal direction, and specifically the left and right direction of the fan 100, and the second direction as the vertical direction as an example.

[0059] The fan 100 described above, the shaking assembly 50 for driving the head assembly 10 to shake its head is arranged between the head assembly 10 and the body assembly 30, rather than on the head assembly 10. In this way, the height of the shaking assembly 50 is lower, and being arranged on the body assembly 30 can make it closer to the support center of the chassis 33, thereby improving the problem of center of gravity displacement and making the fan 100 more stable. In addition, the fan 100 drives the head assembly 10 to shake its head up and down and left and right through the shaking motor 51, and controls the transmission path of the shaking motor 51 through the clutch mechanism 53, thereby independently controlling the start and stop of the shaking in the corresponding direction, that is, the fan 100 only uses a single shaking motor 51 to achieve two-way shaking and two unidirectional shaking. In this way, the fan 100 requires fewer motors, and the wiring is easier. Moreover, when shaking the head left and right, the shaking motor 51 does not need to drive another shaking motor, and the driving load is smaller.

[0060] Please also read Figures 4 to 7 In some embodiments, the clutch mechanism 53 includes an operating member 531, and the operating member 531 is configured to be movable between a first position, a second position, and a third position that are sequentially arranged.

[0061] In the first position, the operating member 531 cuts off the first transmission path and connects the second transmission path; in the second position, both the first transmission path and the second transmission path are connected; in the third position, the operating member 531 cuts off the second transmission path and connects the first transmission path.

[0062] It can be understood that the first transmission path is cut off, the second transmission path is turned on, the shaking motor 51 is started, and the head assembly 10 only shakes left and right. The first transmission path and the second transmission path are both turned on, the shaking motor 51 is started, and the head assembly 10 shakes up and down and shakes left and right at the same time, and this position is also the initial position of the operating member 531. The second transmission path is cut off, the first transmission path is turned on, and the head assembly 10 only shakes up and down.

[0063] In this way, the user can switch the head assembly 10 between three different shaking states simply by driving the operating member 531 to move between the first position, the second position and the third position.

[0064] Please also read Figure 8 In some embodiments, the shaking head assembly 50 also includes an assembly support, a first rotating seat 591 and a second rotating seat 593. The head assembly 10 is rotatably arranged on the assembly support around a first axis. The first rotating seat 591 and the second rotating seat 593 are rotatably cooperated around the second axis. The assembly support is arranged on the first rotating seat 591. The second rotating seat 593 is fixedly connected to the body assembly 30 of the fan 100. The shaking head motor 51 is arranged on the first rotating seat 591.

[0065] The head assembly 10 rotates around the first axis to achieve up and down shaking, that is, pitch shaking. At the same time, the head assembly 10 is indirectly arranged on the first rotating seat 591 through the assembly support, and the first rotating seat 591 can rotate around the second axis relative to the second rotating seat 593, and the second rotating seat 593 is fixed on the support rod 31 of the fuselage assembly 30. Therefore, when the first rotating seat 591 rotates around the second axis relative to the second rotating seat 593, the shaking motor 51, the assembly support and the head assembly 10 located on the assembly support on the first rotating seat 591 rotate accordingly, so as to achieve left and right shaking of the head assembly 10.

[0066] Specifically, the oscillating motor 51 can be connected to the second rotating seat 593 in a transmission manner, and drive the first rotating seat 591 to rotate relative to the second rotating seat 593 around the second axis by generating a reaction force acting on the second rotating seat 593 .

[0067] Thus, the oscillating motor 51 and the head assembly 10 are directly or indirectly arranged on the first rotating seat 591 and can rotate around the second axis together. Therefore, the oscillating motor 51 can drive the first rotating seat 591 to rotate relative to the second rotating seat 593 to achieve the head assembly 10 oscillating left and right.

[0068] Furthermore, the chassis 33 has a support surface on a side facing away from the support rod 31 , and the axis of the support rod 31 coincides with the second axis and passes through the geometric center of the support surface.

[0069] It can be understood that the chassis 33 can be supported on the plane where the fan 100 is installed, such as the ground, through the support surface. Specifically, the first rotating seat 591 and the second rotating seat 593 are arranged at the top of the support rod 31, and the axes of the two rotating seats also coincide with the second axis and pass through the geometric center of the support surface, and the first axis can intersect with the second axis.

[0070] In this way, the center of the left and right shaking of the head assembly 10 is located at the center of the supporting surface, the shaking head assembly 50 is connected to the support rod 31, and the axes of the two coincide, the shaking head assembly 50 is located at the center of the supporting surface, and can drive the head assembly 10 to rotate around the center line of the supporting surface, and the probability of the shaking head assembly 50 and the head assembly 10 being misaligned is reduced.

[0071] In some embodiments, the fan 100 further includes a transmission mechanism 55, which is transmission-connected to the oscillating motor 51 and the head assembly 10 to form a first transmission path. The transmission mechanism 55 has a transmission state and a non-transmission state, and the clutch mechanism 53 is transmission-connected to the transmission mechanism 55 and is configured to drive the transmission mechanism 55 to switch between the transmission state and the non-transmission state to control the on-off of the first transmission path.

[0072] It can be understood that in the transmission state, the transmission mechanism 55 is connected to the oscillating head motor 51 and the handpiece assembly 10, and the oscillating head motor 51 can drive the handpiece assembly 10 to rotate around the first axis through the transmission mechanism 55. When the transmission mechanism 55 is in the non-transmission state, the oscillating head motor 51 cannot drive the handpiece assembly 10 to rotate around the first axis through the transmission mechanism 55, and the clutch mechanism 53 can control the state switching of the transmission mechanism 55.

[0073] In this way, the user can control the transmission mechanism 55 to switch between the transmission state and the non-transmission state through the clutch mechanism 53, and then control the on and off of the first transmission path when the shaking motor 51 is started, that is, independently control the start and stop of the up and down shaking of the fan 100.

[0074] Please also read Figures 9 to 12, further, the transmission mechanism 55 includes a rack 553 and a transmission gear, the rack 553 is provided on the head assembly 10 and is arranged around the first axis. The transmission gear includes a first gear 551 and a second gear 552, the first gear 551 is configured to have an axis parallel to the second axis, and the second gear 552 is configured to have an axis parallel to the first axis. The first gear 551 has a first conical tooth portion 5511, the second gear 552 has a second conical tooth portion 5521 and a second cylindrical tooth portion 5522, the first conical tooth portion 5511 is meshed with the second conical tooth portion 5521, and the second cylindrical tooth portion 5522 is meshed with the rack 553. The first gear 551 is configured to be movably arranged and has a transmission position and a non-transmission position. The clutch mechanism 53 is transmission-connected to the first gear 551, and is configured to be able to drive the first gear 551 to switch between the transmission position and the non-transmission position. When the first gear 551 is in the transmission position, it meshes with the second gear 552, and the transmission mechanism 55 is in the transmission state; when the first gear 551 is in the non-transmission position, it is disengaged from the second gear 552, and the transmission mechanism 55 is in the non-transmission state.

[0075] Specifically, the housing 13 of the head assembly 10 has a mounting portion 131, the mounting portion 131 is arc-shaped, and the axis is the first axis, and the rack 553 is mounted on the mounting portion 131. The housing 13 also has an air inlet and an air outlet, the mounting portion 131 is located in the direction of the air inlet, the rack 553 is arranged on the side of the mounting portion 131 facing away from the air inlet, and the meshing teeth of the rack 553 are located on the side of the mounting portion 131 facing away from the air inlet.

[0076] The driving shaft 513 of the oscillating motor 51 may be arranged parallel to the second axis. In addition, the fan 100 may further include a driving gear 511 , which is sleeved on the driving shaft 513 of the oscillating motor 51 and meshed with the first cylindrical tooth portion 5512 .

[0077] In this way, the torque output by the oscillating motor 51 can be converted into a desired direction by the first gear 551 and the second gear 552 that cooperate with each other, and then the head assembly 10 is driven to rotate around the first axis through the second cylindrical tooth portion 5522 of the second gear 552 through the rack 553. The clutch mechanism 53 only needs to drive the first gear 551 to switch between the transmission position and the non-transmission position to control the transmission mechanism 55 to switch between the transmission state and the non-transmission state, and the implementation method is simple and reliable.

[0078] Furthermore, the second gear 552 has two groups of second cylindrical teeth 5522, which are respectively located on both sides of the first conical teeth 5511 in the axial direction. The rack 553 has a first tooth 5531 and a second tooth 5533, which are respectively meshed with the two groups of second cylindrical teeth 5522, and the first tooth 5531 and the second tooth 5533 are spaced apart from each other in the axial direction of the second gear 552 to form a strip-shaped avoidance opening 5535 for avoiding the first conical teeth 5511.

[0079] It can be understood that the first tooth portion 5531 meshes with the second cylindrical tooth portion 5522 on one side of the second gear 552 , and the second tooth portion 5533 meshes with the second cylindrical tooth portion 5522 on the other side of the second gear 552 .

[0080] This helps to improve the transmission stability between the rack 553 and the second gear 552 .

[0081] In some embodiments, the assembly support has an arc-shaped mating surface 571, the axis of the arc-shaped mating surface 571 is the first axis, the head assembly 10 is matched with the arc-shaped mating surface 571 through the mounting portion 131, and can slide along the arc-shaped mating surface 571 to rotate around the first axis.

[0082] Since the axis of the arc-shaped mating surface 571 is the first axis, the head assembly 10 can rotate around the first axis by sliding along the arc-shaped mating surface 571 through the mounting portion 131 .

[0083] In this way, the head assembly 10 can achieve stable rotation relative to the assembly support by sliding along the arc-shaped mating surface 571.

[0084] Please also read Fig.13 Specifically, the assembly support includes a support body 572, a shell 573 and a limiting cover (not shown), and the support body 572 forms an arc-shaped mating surface 571. The shell 573 is assembled on the first rotating seat 591 and can be connected to the first rotating seat 591 by screws. The top of the shell 573 has a mounting groove 5731, and the support body 572 is arranged in the mounting groove 5731, and the top of the support body 572 can pass through the rack 553 through the strip-shaped avoidance opening 5535 to match the mounting portion 131. In addition, the top of the shell 573 can also form a gear groove 5733, and the second gear 552 is installed in the gear groove 5733. The limiting cover is covered on the arc-shaped mating surface 571 of the support body 572, and the mounting portion 131 is at least partially located between the support body 572 and the limiting cover, so as to limit the mounting portion 131 between the two to prevent the head assembly 10 from being separated.

[0085] Furthermore, the assembly support further includes a supporting roller 574 , the axial direction of the supporting roller 574 is parallel to the first axis, the supporting roller 574 is disposed on the support body 572 and located at the arc-shaped mating surface 571 , and rollingly supports the mounting portion 131 .

[0086] In this way, the supporting roller 574 can support the mounting portion 131 and make it slide more smoothly along the arc-shaped mating surface 571, thereby helping the head assembly 10 to shake its head up and down.

[0087] Specifically, the support roller 574 includes an outer roller and an inner roller. The support body 572 has a first axial hole and a second axial hole. The outer roller is installed on the support body 572 through the first axial hole, and the inner roller is installed on the support body 572 through the second axial hole.

[0088] Please also read Figures 14 to 16 In some embodiments, the clutch mechanism 53 further includes a first buckle 533, the operating member 531 includes a driving portion 5311 and a locking portion 5312, the driving portion 5311 cooperates with the first gear 551, and the operating member 531 drives the first gear 551 to move through the driving portion 5311. When the operating member 531 drives the first gear 551 to move to the transmission position and / or the non-transmission position, the locking portion 5312 engages with the first buckle 533. Specifically, the first gear 551 may have a matching hole, and the driving portion 5311 is partially inserted into the hole.

[0089] It can be understood that when the operating member 531 is in the initial position and the third position, the first gear 551 is in the transmission position. The first buckle 533 is fixed relative to the second gear 552. After the locking portion 5312 is engaged with the first buckle 533, the operating member 531 can be limited. The first gear 551 is also relatively fixed to the second gear 552, so that the first gear 551 can be stably in the transmission position and / or the non-transmission position. In addition, the limit caused by the engagement of the first buckle 533 can be overcome and released by external force.

[0090] In this way, the user can drive the first gear 551 to move through the operating member 531, and the first buckle 533 enables the first gear 551 to remain in the transmission position and / or the non-transmission position after the user removes the external force.

[0091] Furthermore, the operating member 531 is configured to be able to move along the engagement direction (eg Figure 4The clutch mechanism 53 further comprises a first elastic member 535, which cooperates with the operating member 531 and is configured to provide a driving force for driving the operating member 531 to move in a direction opposite to the engagement direction. The first buckle 533 has a first guide surface 5331, which intersects with the engagement direction and is used to generate a guide for engaging the first buckle 533. The clutch mechanism 53 further comprises a second elastic member 536, and the operating member 531 further comprises an unlocking portion 5316, which is arranged upstream of the locking portion 5312 in the engagement direction, and has a contact surface 5317 and a second guide surface 5318, and the contact surface 5317 is located downstream of the second guide surface 5318 in the engagement direction. The unlocking portion 5316 is configured to be movable relative to the locking portion 5312 in a direction parallel to the engagement direction, and the second elastic member 536 is disposed between the locking portion 5312 and the unlocking portion 5316, and can be compressed until the contact surface 5317 abuts against the locking portion 5312. The second guide surface 5318 intersects with the engagement direction and is used to generate a guide for disengaging from the first buckle 533.

[0092] It can be understood that the first position, the second position and the third position are arranged sequentially along the engagement direction, that is, the operating member 531 located at the initial position can reach the third position along the engagement direction and fall to the first position in the direction opposite to the engagement direction.

[0093] When the operating member 531 drives the first gear 551 to move to the non-transmission position, the locking portion 5312 engages with the first buckle 533, and one end of the locking portion 5312 may have a concave hole 5315 for assembling the first elastic member 535. The first buckle 533 can be elastically deformed, and the locking portion 5312 can be guided by the first guide surface 5331 to squeeze and snap into the first buckle 533 to form an engagement therewith.

[0094] The contact surface 5317 of the unlocking portion 5316 or the surface of the locking portion 5312 facing the unlocking portion 5316 may have a receiving groove 5319, and the receiving groove 5319 is used to receive the second elastic member 536 located between the unlocking portion 5316 and the locking portion 5312, so that the unlocking portion 5316 abuts against the locking portion 5312. For ease of understanding, the process of engaging the operating member 531 with the first buckle 533 is briefly described below:

[0095] When the locking portion 5312 of the operating member 531 is not engaged with the first buckle 533, it is located upstream of the first buckle 533 in the engagement direction, and the unlocking portion 5316 is spaced apart from the locking portion 5312 under the action of the second elastic member 536. When the operating member 531 is subjected to an external force and moves along the engagement direction, the first elastic member 535 is compressed, and the locking portion 5312 is pressed and engaged with the first buckle 533 under the action of the first guide surface 5331. At this time, the first gear 551 is in a non-transmission position, and the transmission mechanism 55 is in a non-transmission state. On this basis, external force continues to be applied to the operating member 531 to drive it to continue to move in the engagement direction and continue to compress the first elastic member 535 until the unlocking portion 5316, under the action of the first guide surface 5331, causes the second guide surface 5318 to engage with the first buckle 533. At this time, the external force is removed, and under the action of the first elastic member 535, the locking portion 5312 moves in the direction opposite to the engagement direction until it abuts against the unlocking portion 5316. The locking portion 5312 and the unlocking portion 5316 form a whole and are jointly driven by the first elastic member 535 and guided by the second guide surface 5318 to break open and disengage from the first buckle 533, so that the operating member 531 returns to its initial position.

[0096] In this way, the user can switch the transmission mechanism 55 to the non-transmission state by driving the operating member 531 to move along the engagement direction, and on this basis, continue to drive the operating member 531 to move along the engagement direction to switch the transmission mechanism 55 back to the transmission state.

[0097] Specifically, the first buckle 533 also has a first locking surface 5332, which is located downstream of the first guide surface 5331 in the engagement direction, and the locking portion 5312 has a second locking surface 5313, and both the first locking surface 5332 and the second locking surface 5313 are perpendicular to the engagement direction. The locking portion 5312 is engaged with the first buckle 533, that is, it moves until the first locking surface 5332 abuts against the second locking surface 5313, so that the locking portion 5312 and the first buckle 533 are engaged.

[0098] It can be understood that the second guide surface 5318 can cover the second locking surface 5313. In other words, the second guide surface 5318 can fully block the second locking surface 5313 relative to the first locking surface 5332 of the first buckle 533, so as to guide the locking portion 5312 and prevent the second locking surface 5313 from abutting against and engaging with the first locking surface 5332.

[0099] In this way, the first locking surface 5332 abuts against the second locking surface 5313 , that is, an engagement effect between the locking portion 5312 and the first buckle 533 is generated, and the operating member 531 is limited in a direction opposite to the engagement direction.

[0100] In addition, the locking portion 5312 may also have a third guide surface 5314, which is located downstream of the second locking surface 5313 in the engagement direction, and the third guide surface 5314 intersects with the engagement direction. The third guide surface 5314 also guides the locking portion 5312 to be engaged with the first buckle 533, and the angle of the third guide surface 5314 may be consistent with the angle of the first guide surface 5331, so that the two can cooperate and guide together.

[0101] In some embodiments, the operating member 531 is configured to push the first gear 551 to move along the engagement direction, and the clutch mechanism 53 also includes a third elastic member 537, which cooperates with the first gear 551 and is configured to provide a driving force to drive the operating member 531 to move in a direction opposite to the engagement direction.

[0102] It can be understood that the operating member 531 can push the first gear 551 to move under the action of an external force and push it to the non-transmission position. The third elastic member 537 is used to generate a force in the opposite direction to push the first gear 551 in the opposite direction and to reach the transmission position when the external force is removed.

[0103] In this way, the operating member 531 only needs to be able to push the first gear 551 to move in a single direction, and the third elastic member 537 can drive the first gear 551 to return to the transmission position after the user removes the external force and the operating member 531 is separated from the first buckle 533.

[0104] Furthermore, the first gear 551 is transmission-connected to the shaking motor 51. When the first gear 551 is in the transmission position, the second conical tooth portion 5521 is meshed with the first conical tooth portion 5511. When the first gear 551 is in the non-transmission position, the second conical tooth portion 5521 is separated from the first conical tooth portion 5511.

[0105] Please also read Fig.17 Specifically, the first rotating seat 591 has a column 5911, which extends in a direction parallel to the engagement direction and has an axial hole therein. The gear shaft of the first gear 551 is rotatably disposed in the axial hole. The third elastic member 537 is disposed in the axial hole and abuts against the gear shaft of the first gear 551.

[0106] Thus, the first rotating seat 591 provides a mounting position for the first gear 551 and the third elastic member 537, and enables the first gear 551 to move in a direction parallel to the engagement direction. The first elastic member 535, the second elastic member 536 and the third elastic member 537 can all be, but are not limited to, springs.

[0107] In some embodiments, the first buckle 533 is disposed on the first rotating seat 591 , and the first buckle 533 is an annular buckle. The first elastic member 535 is disposed in the first buckle 533 and abuts against the operating member 531 .

[0108] In this way, the mounting seat provides a stable mounting position for the first buckle 533 and the first elastic member 535, and also facilitates the engagement of the operating member 531 with the annular buckle. Accordingly, the cross-sections of the locking portion 5312 and the unlocking portion 5316 are both generally annular or circular structures.

[0109] Please also read Fig.18 and Fig.19 In some embodiments, the shaking motor 51 has a driving shaft 513 and a transmission shaft 515. The driving shaft 513 is connected to the head assembly 10, and the transmission shaft 515 is connected to the driving shaft 513, and is locked with the second rotating seat 593 in the rotation around the second axis to form a second transmission path.

[0110] The oscillating motor 51 is a dual-axis motor, and both output shafts are parallel to the second axis, wherein the driving shaft 513 is the driving shaft, and the transmission shaft 515 is the driven shaft that can rotate under the drive shaft 513, and loses power after being released from the driving shaft 513. Specifically, the oscillating motor 51 may also have a motor internal gear 517, and power is output through the motor internal gear 517, and the driving shaft 513 is in transmission connection with the motor internal gear 517.

[0111] The driving shaft 513 is connected to the head assembly 10 through the transmission mechanism 55, and the driving gear 511 is sleeved on the driving shaft 513 of the oscillating motor 51. The first rotating seat 591 has a mounting position for mounting the oscillating motor 51, and the oscillating motor 51 can be fixed on the first rotating seat 591 by screws.

[0112] The transmission shaft 515 is engaged with the second rotating seat 593 to prevent rotation. Since the second rotating seat 593 is fixed on the support rod 31, when the transmission shaft 515 outputs torque, a reaction force will be generated to drive the shaking motor 51 to drive the first rotating seat 591 to rotate, and then drive the assembly support and the head assembly 10 to rotate around the second axis.

[0113] In this way, the oscillating motor 51 can respectively drive the oscillation up and down and left and right through the two output shafts.

[0114] Further, the driving shaft 513 has a first meshing end face 5131 at one end in the axial direction, and the transmission shaft 515 has a second meshing end face 5151 at one end in the axial direction, and the first meshing end face 5131 and the second meshing end face 5151 are configured to mesh with each other. The operating member 531 also includes a paddle portion 5330, which is transmission-connected to the driving shaft 513 and / or the transmission shaft 515, and is configured to drive the transmission shaft 515 to mesh with and separate from the driving shaft 513 in the axial direction, so as to control the on and off of the second transmission path.

[0115] It can be understood that the first meshing end surface 5131 and the second meshing end surface 5151 can have meshing teeth that can cooperate with each other, and after meshing, they can be rotated in a direction around the second axis. Specifically, the drive shaft 513 and the transmission shaft 515 both have crown gears, and the first meshing end surface 5131 and the second meshing end surface 5151 are formed by the crown gears respectively. Specifically, the paddle portion 5330 is in transmission connection with the drive shaft 513.

[0116] In this way, the user can use the paddle portion 5330 to engage and disengage the transmission shaft 515 and the drive shaft 513, and then control the on and off of the second transmission path when the oscillation motor 51 is started, that is, independently control the start and stop of the left and right oscillation of the fan 100.

[0117] More specifically, the paddle portion 5330 is disposed below the driving gear 511 , and when it moves downward, it will not affect the driving shaft 513 , and when it moves upward, it can lift up the driving gear 511 , thereby driving the driving shaft 513 to move upward.

[0118] In some embodiments, the housing 573 further has a mounting groove 5735 extending in a direction parallel to the engagement direction, and the operating member 531 is disposed in the mounting groove 5735 and configured to be movable along the mounting groove 5735. The operating member 531 is at least partially exposed outside the housing 573.

[0119] The operating member 531 may also include a main body 5310, the main body 5310 is assembled in the assembly groove 5735, the unlocking portion 5316 may be sleeved on the main body 5310, the top of the main body 5310 is exposed outside the housing 573, the bottom of the main body 5310 abuts against the locking portion 5312, and the driving portion 5311 and the paddle portion 5330 may be integrally connected to the main body 5310. Specifically, when the first gear 551 is in the transmission position, the operating member 531 is in the initial position. At this time, the user can press the top of the main body 5310 to press the operating member 531 to the third position, thereby driving the first gear 551 to move to the non-transmission position, and pressing the operating member 531 again can restore it to the initial position. The user can also pull the operating member 531 located in the initial position to the first position, thereby driving the drive shaft 513 to separate from the transmission shaft 515. During the upward movement of the drive shaft 513 and the driving gear 511, the driving gear 511 remains engaged with the first gear 551.

[0120] In some embodiments, the cross-section of the end of the transmission shaft 515 away from the second meshing end surface 5151 is non-circular, and the second rotating seat 593 has a matching shaft hole 5931 that matches with the end of the transmission shaft 515 .

[0121] Specifically, the end section of the driving shaft 513 is also non-circular, and the ends of the driving shaft 513 and the transmission shaft 515 can be flat, and accordingly, the matching shaft hole 5931 is also flat. Similarly, the driving gear 511 has a flat shaft hole, and the end of the driving shaft 513 is inserted into the shaft hole of the driving gear 511 to achieve a non-rotational fit between the two.

[0122] In this way, the end of the transmission shaft 515 is inserted into the matching shaft hole 5931 , so that the transmission shaft 515 and the second rotating seat 593 can be locked in rotation.

[0123] In some embodiments, the first rotating seat 591 has a rotating shaft structure 5913 , the rotating shaft structure 5913 extends along the direction of the second axis, and the second rotating seat 593 has a rotating groove 5932 that cooperates with the rotating shaft structure 5913 .

[0124] Specifically, the rotating shaft structure 5913 is hollow, the rotating groove 5932 is arranged around the matching shaft hole 5931, and the transmission shaft 515 passes through the rotating shaft structure 5913 and matches with the matching shaft hole 5931.

[0125] In this way, the first rotating seat 591 can rotate and cooperate with the second rotating seat 593 around the second axis through the rotating shaft structure 5913.

[0126] Specifically, one of the rotating shaft structure 5913 and the rotating slot 5932 has a second buckle 5933, and the other has a slot 5915, and the slot 5915 engages with the second buckle 5933 to generate a limit in the direction of the second axis. In this way, the cooperation between the second buckle 5933 and the slot 5915 can reduce the probability of abnormal separation of the two.

[0127] Furthermore, the surface of the second rotating seat 593 that cooperates with the first rotating seat 591 has an annular groove 5934. The annular groove 5934 is formed around the second axis, and can constrain and guide the first rotating seat 591 to rotate.

[0128] The chassis 33 of the above-mentioned fan 100 supports and stabilizes the whole machine. The support rod 31 connects the chassis 33 and the head assembly 10, and the head assembly 10 generates airflow. Specifically, the head assembly 10 is connected to the support rod 31 through the shaking head assembly 50. The shaking head motor 51 drives the active gear 511 through the driving shaft 513, driving the transmission gear to rotate to realize the shaking of the head assembly 10 in the up and down directions. At the same time, the driving shaft 513 can also drive the transmission shaft 515 to act on the second rotating seat 593, thereby generating a reaction force to drive the head assembly 10 to shake in the left and right directions. In this way, the fan 100 realizes the up and down and left and right rotation of the head assembly 10 driven by a single motor. When the operating member 531 is in the initial position, the shaking head motor 51 is turned on, which can simultaneously drive the head assembly 10 to shake left and right and up and down. For the operating member 531 in the initial position, if the operating member 531 is pressed, the driving part 5311 of the operating member 531 pushes down the first gear 551 to disengage from the second gear 552, so that the pitch and tilt transmission chain is disconnected, and the paddle part 5330 only disengages from the lower end surface of the active gear 511, and does not act on the drive shaft 513. The second transmission path is still valid. At this time, turning on the shaking motor 51 can only drive the head assembly 10 to shake left and right. Pressing down the operating member 531 again can restore it to the initial position. For the operating member 531 in the initial position, if the operating member 531 is pulled up, the paddle part 5330 lifts up the lower end surface of the active gear 511, and moves up together with the driving gear fixed thereon. At this time, the crown gears of the drive shaft 513 and the transmission shaft 515 fail due to disengagement, and the transmission shaft 515 loses power, while the drive shaft 513 still has driving force because the internal gear 517 of the motor on it is still driven by the upper-level gear. At this time, the operating part 531 moves upward without acting on the transmission gear, and the first transmission path is still valid. At this time, turning on the shaking motor 51 can only drive the head assembly 10 to pitch and shake.

[0129] In this way, the shaking head assembly 50 is installed between the head assembly 10 and the support rod 31, and is located in a relatively centered position. In terms of wiring, since the fan 100 can realize a single-motor shaking head drive, only one line is needed to connect to the mainboard, and fewer wiring 70 are required. The shaking head assembly 50 is located in a relatively centered position below the head assembly 10, and the center of gravity of the whole machine is lower and centered relative to the chassis 33, which is beneficial to the stability of the whole machine. In addition, for shaking the head up and down, the shaking head motor 51 only drives the head assembly 10 and part of the shaking head assembly 50, without the need to drive another shaking head motor. The driving load is small, and the requirements for the motor driving force are reduced, which can effectively increase the reliability of the motor and provide a cost reduction direction for the motor. Finally, the fan 100 can control the three states of the shaking of the whole machine through an operating part 531: the left and right and pitch shaking heads are turned on at the same time; only the pitch shaking head is turned on; only the left and right shaking heads are turned on, which is easy to operate and has a good user experience.

[0130] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0131] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A fan, characterized in that: The fan comprises a head assembly (10), a body assembly (30) and an oscillating head assembly (50); the oscillating head assembly (50) is arranged between the head assembly (10) and the body assembly (30) and is respectively connected to the two; the oscillating head assembly (50) comprises: an oscillating motor (51) configured to drive the head assembly (10) to rotate about a first axis through a first transmission path and to drive the head assembly (10) to rotate about a second axis through a second transmission path, wherein the direction of the second axis intersects the direction of the first axis; and A clutch mechanism (53), wherein the clutch mechanism (53) is configured to be able to control the connection and disconnection of the first transmission path and the second transmission path.

2. The fan according to claim 1, characterized in that The shaking head assembly (50) also includes an assembly support, a first rotating seat (591) and a second rotating seat (593); the head assembly (10) is rotatably arranged on the assembly support around the first axis; the first rotating seat (591) and the second rotating seat (593) are rotatably matched around the second axis; the assembly support is arranged on the first rotating seat (591); the second rotating seat (593) is fixedly connected to the body assembly (30) of the fan; and the shaking head motor (51) is arranged on the first rotating seat (591).

3. The fan according to claim 2, characterized in that: The fuselage assembly (30) comprises a support rod (31) and a chassis (33); the chassis (33) has a support surface on a side facing away from the support rod (31); the axis of the support rod (31) coincides with the second axis and passes through the geometric center of the support surface.

4. The fan according to claim 2, characterized in that: The shaking head motor (51) has a driving shaft (513) and a transmission shaft (515), wherein the driving shaft (513) is drivingly connected to the head assembly (10), and the transmission shaft (515) is drivingly connected to the driving shaft (513) and is engaged with the second rotating seat (593) in a rotation direction around the second axis to form the second transmission path.

5. The fan according to claim 4, characterized in that: The drive shaft (513) has a first meshing end surface (5131) at one end in the axial direction, and the transmission shaft (515) has a second meshing end surface (5151) at one end in the axial direction, and the first meshing end surface (5131) and the second meshing end surface (5151) are configured to mesh with each other; The clutch mechanism (53) comprises a paddle portion (5330), wherein the paddle portion (5330) is transmission-connected to the drive shaft (513) and / or the transmission shaft (515), and is configured to be able to drive the transmission shaft (515) and the drive shaft (513) to engage with and disengage from each other along the axial direction.

6. The fan according to claim 5, characterized in that: The cross section of the end of the transmission shaft (515) away from the second meshing end surface (5151) is non-circular, and the second rotating seat (593) has a matching shaft hole (5931) that matches the end of the transmission shaft (515); And / or, the first rotating seat (591) has a rotating shaft structure (5913), the rotating shaft structure (5913) extends along the direction of the second axis, and the second rotating seat (593) has a rotating groove (5932) that cooperates with the rotating shaft structure (5913).

7. The fan according to claim 2, characterized in that: The fan further comprises a transmission mechanism (55), wherein the transmission mechanism (55) is transmission-connected between the oscillating motor (51) and the head assembly (10) to form the first transmission path; The transmission mechanism (55) has a transmission state and a non-transmission state, and the clutch mechanism (53) is transmission-connected to the transmission mechanism (55) and is configured to be able to drive the transmission mechanism (55) to switch between the transmission state and the non-transmission state.

8. The fan according to claim 7, characterized in that: The transmission mechanism (55) comprises a rack (553) and a transmission gear; the rack (553) is provided on the head assembly (10) and is arranged around the first axis; The transmission gear comprises a first gear (551) and a second gear (552); the first gear (551) is configured such that an axis is parallel to the second axis; and the second gear (552) is configured such that an axis is parallel to the first axis. The first gear (551) has a first conical tooth portion (5511), and the second gear (552) has a first conical tooth portion (5511) and a second cylindrical tooth portion (5522); the first conical tooth portion (5511) meshes with the first conical tooth portion (5511), and the second cylindrical tooth portion (5522) meshes with the rack (553); the first gear (551) is configured to be movably arranged, and has a transmission position and a non-transmission position; the clutch mechanism (53) is transmission-connected to the first gear (551), and is configured to be able to drive the first gear (551) to switch between the transmission position and the non-transmission position; when the first gear (551) is in the transmission position, it meshes with the second gear (552), and the transmission mechanism (55) is in a transmission state; when the first gear (551) is in the non-transmission position, it is disengaged from the second gear (552), and the transmission mechanism (55) is in a non-transmission state.

9. The fan according to claim 8, characterized in that The clutch mechanism (53) comprises an operating member (531) and a first buckle (533); the operating member (531) comprises a driving portion (5311) and a locking portion (5312); the driving portion (5311) cooperates with the first gear (551); the operating member (531) drives the first gear (551) to move via the driving portion (5311); when the operating member (531) drives the first gear (551) to move to the transmission position and / or the non-transmission position, the locking portion (5312) engages with the first buckle (533).

10. The fan according to claim 9, characterized in that The operating member (531) is configured to be movable along an engagement direction until the locking portion (5312) engages with the first buckle (533); the clutch mechanism (53) further comprises a first elastic member (535), the first elastic member (535) cooperates with the operating member (531) and is configured to provide a driving force for driving the operating member (531) to move in a direction opposite to the engagement direction; The first buckle (533) has a first guide surface (5331), the first guide surface (5331) intersects with the engagement direction and is used to generate a guide for engaging the first buckle (533); The clutch mechanism (53) further comprises a second elastic member (536), the operating member (531) further comprises an unlocking portion (5316), the unlocking portion (5316) is arranged upstream of the locking portion (5312) in the engaging direction, the unlocking portion (5316) comprises a contact surface (5317) and a second guide surface (5318), the contact surface (5317) is arranged downstream of the second guide surface (5318) in the engaging direction; the unlocking portion (5316) is configured to be movable relative to the locking portion (5312) in a direction parallel to the engaging direction, the second elastic member (536) is arranged between the locking portion (5312) and the unlocking portion (5316), and can be compressed until the contact surface (5317) abuts against the locking portion (5312); the second guide surface (5318) intersects with the engaging direction and is used to generate a guide for disengaging from the first buckle (533).

11. The fan according to any one of claims 1 to 10, characterized in that: The clutch mechanism (53) comprises an operating member (531), and the operating member (531) is configured to be movable between a first position, a second position, and a third position which are arranged in sequence; When in the first position, the operating member (531) cuts off the first transmission path, while the second transmission path is connected; when in the second position, both the first transmission path and the second transmission path are connected; when in the third position, the operating member (531) cuts off the second transmission path, while the first transmission path is connected.

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