Machine head assembly and fan

Abstract

The invention relates to a machine head assembly and a fan, the machine head assembly comprises a machine head body, a head shaking motor and a clutch mechanism, and the head shaking motor is configured to be capable of driving the machine head body to rotate around a first axis through a first transmission path and driving the machine head body 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 is configured to control on-off of the first transmission path and / or the second transmission path. According to the machine head assembly, the head shaking motor drives the machine head body to shake up and down and left and right. On the basis, the machine head assembly can further control on-off of a transmission path of the head shaking motor through the clutch mechanism, and then start and stop of head shaking in the corresponding direction are controlled, that is, the machine head assembly can achieve bidirectional head shaking and unidirectional head shaking only through a single motor. In this way, the machine head assembly achieves the up-and-down and left-and-right head shaking function of the machine head body through the single head shaking motor, and the whole machine power of the fan and the needed occupied installation space can be reduced.

Description

Technical Field

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

[0002] Circulation fans are increasingly used because of their advantages of more uniform air flow, energy saving and power saving. Circulation fans are usually composed of a body and a head. In order to increase the air supply range, some circulation fans have a shaking function. Specifically, the shaking includes up and down shaking and left and right shaking.

[0003] In the related art, the up and down shaking and left and right shaking functions of most circulation fans are basically controlled by two separate motors. There are many motors, the cost is high, and the assembly efficiency is low. With the current trend of lower product costs, this driving solution is undoubtedly costly and has low value. The large number of motors used at the same time will result in high power of the whole machine, reduced energy efficiency, and ineffective energy saving. In addition, the placement of the two motors in the dual-motor driving solution requires a large space, which will easily lead to a bloated appearance design. Summary of the invention

[0004] Based on this, it is necessary to provide a head assembly and a fan that can use a single motor to achieve left and right and up and down shaking in order to solve the above problems.

[0005] A head assembly for a fan, the head assembly comprising a head body, an oscillating motor and a clutch mechanism, the oscillating motor being configured to drive the head body to rotate around a first axis via a first transmission path and to drive the head body to rotate around a second axis via a second transmission path, the direction of the second axis intersecting with the direction of the first axis; the clutch mechanism being configured to control the on and off of the first transmission path and / or the second transmission path.

[0006] In one embodiment, the head assembly also includes an assembly support, a first rotating seat and a second rotating seat. The head body 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 used to fix the body assembly of the fan, and the shaking motor is arranged on the first rotating seat.

[0007] In one embodiment, the head assembly also includes a transmission mechanism, which is arranged between the shaking motor and the head body to form the first transmission path; the transmission mechanism has a transmission state and a non-transmission state, and the clutch mechanism is connected to the transmission mechanism and is configured to drive the transmission mechanism to switch between the transmission state and the non-transmission state to control the on and off of the first transmission path.

[0008] In one embodiment, the transmission mechanism includes a rack and a transmission gear, the rack is disposed on the head body and is arranged around the first axis, and the transmission gear is transmission-connected to the shaking motor and meshes with the rack.

[0009] In one embodiment, the transmission gear includes a first gear and a second gear, the first gear is configured with an axis parallel to the second axis, and the second gear is configured with an axis parallel to the first axis;

[0010] The first gear has a first conical tooth portion, the second gear has a second conical tooth portion and a second cylindrical tooth portion, the first conical tooth portion meshes with the second conical tooth portion, and the second cylindrical tooth portion meshes with the rack.

[0011] In one embodiment, the second gear has two sets of the second cylindrical teeth, and the two sets of the second cylindrical teeth are respectively located on both sides of the first conical teeth in the axial direction;

[0012] The rack has a first tooth portion and a second tooth portion, the first tooth portion and the second tooth portion are respectively meshed with two groups of the second columnar tooth portions, and the first tooth portion and the second tooth portion are spaced apart in the axial direction of the second gear to form a strip-shaped avoidance opening for avoiding the first conical tooth portion.

[0013] In one embodiment, the head body includes a housing, the housing has a mounting portion, the mounting portion is arc-shaped, and the axis is the first axis, and the rack is mounted on the mounting portion.

[0014] In one of the embodiments, the assembly support has an arc-shaped mating surface, the axis of the arc-shaped mating surface is the first axis, and the head body is matched with the arc-shaped mating surface through the mounting portion and can slide along the arc-shaped mating surface.

[0015] In one of the embodiments, the head assembly further includes a supporting roller, the axial direction of the supporting roller is parallel to the first axis, and the supporting roller is disposed at the arc-shaped mating surface to rollingly support the mounting portion.

[0016] In one embodiment, the first gear is configured to be movably arranged 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;

[0017] When the first gear is in the transmission position, it meshes with the second gear, and the transmission mechanism is in a transmission state; when the first gear is in the non-transmission position, it disengages from the second gear, and the transmission mechanism is in a non-transmission state.

[0018] 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.

[0019] 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;

[0020] 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;

[0021] 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.

[0022] In one embodiment, the operating member is configured to push the first gear to move along the engagement direction, and the clutch mechanism also includes a third elastic member, which cooperates with the first gear and is configured to provide a driving force to drive the operating member to move in a direction opposite to the engagement direction.

[0023] In one embodiment, the head assembly further comprises a housing, the housing having an assembly groove, the assembly groove extending in a direction parallel to the engagement direction, the operating member being disposed in the assembly groove and configured to be movable along the assembly groove; the operating member further comprising a pressing portion, the pressing portion being at least partially located outside the housing;

[0024] And / or, the head assembly further comprises a mounting seat, the mounting seat having a column, the column extending in a direction parallel to the engaging direction and having an axial hole therein, the gear shaft of the first gear being rotatably disposed in the axial hole, the third elastic member being disposed in the axial hole and abutting against the gear shaft of the first gear;

[0025] And / or, the head assembly also includes a mounting seat, the first buckle is arranged on the mounting seat, and the first buckle is an annular buckle, the first elastic member is arranged in the first buckle and abuts against the operating member.

[0026] In one embodiment, the shaking motor has a first output shaft and a second output shaft, the first output shaft is drivingly connected to the head body, and the second output shaft is engaged with the second rotating seat in a rotation direction around the second axis.

[0027] In one embodiment, the cross section of the end of the second output shaft is non-circular, and the second rotating seat has a matching shaft hole matching with the end of the second output shaft;

[0028] 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 that cooperates with the rotating shaft structure; one of the rotating shaft structure and the rotating groove has a second buckle, and the other has a slot, the slot is engaged with the second buckle, and produces a limit in the direction of the second axis.

[0029] A fan comprises the above-mentioned head assembly.

[0030] The above-mentioned head assembly drives the head body to shake up and down and left and right through the shaking motor. On this basis, the head assembly can also control the transmission path of the shaking motor through the clutch mechanism, and then control the start and stop of the shaking in the corresponding direction, that is, the head assembly can achieve two-way shaking and one-way shaking with only a single shaking motor. In this way, the head assembly realizes the up and down and left and right shaking functions of the head body through a single shaking motor, which helps to reduce the overall power of the fan and requires a relatively small installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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.

[0032] Figure 1Schematic diagram of the structure of a fan with a head assembly in one embodiment of the present application.

[0033] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the fan shown.

[0034] Figure 3 for Figure 1 A schematic diagram of the cross-sectional structure of the fan is shown.

[0035] 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.

[0036] Figure 5 for Figure 4 The enlarged structural schematic diagram of the fan at B is shown.

[0037] 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.

[0038] 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.

[0039] Figure 8 for Figure 1 A schematic diagram of a cross-sectional structure of the fan at another angle is shown.

[0040] Fig. 9 for Figure 8 The enlarged structural schematic diagram of the fan at C is shown.

[0041] Fig.10 for Figure 1 A schematic diagram of the exploded structure of the fan head body is shown.

[0042] Fig.11 for Figure 1 Schematic diagram of the structure of the rack in the fan shown.

[0043] Fig.12 for Figure 1 A schematic structural diagram of the first gear in the fan shown.

[0044] Fig.13 for Figure 1 A schematic diagram of the structure of the second gear in the fan shown.

[0045] Fig.14 for Figure 1 Schematic diagram of the structure of the driving gear in the fan shown.

[0046] Fig.15 for Figure 1 The schematic diagram of the structure of the support body in the fan is shown.

[0047] Fig.16 for Figure 1 Schematic diagram of the structure of the fan casing shown.

[0048] Fig.17 for Figure 1 The schematic diagram of the structure of the outer roller and the inner roller in the fan is shown.

[0049] Fig.18 for Figure 1 A schematic diagram of the partial structure of the operating parts in the fan shown.

[0050] Fig.19 for Figure 1 The schematic diagram of the structure of the locking part in the fan is shown.

[0051] Fig. 20 for Figure 1 The schematic diagram of the structure of the unlocking part in the fan is shown.

[0052] Fig.21 for Figure 1 The schematic diagram of the structure of the first rotating seat in the fan is shown.

[0053] Fig. 22 for Figure 1 The schematic diagram of the structure of the oscillating motor in the fan is shown.

[0054] Fig.23 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.

[0055] Explanation of reference numerals: 100, head assembly; 10, head body; 11, main motor; 12, fan blade; 13, housing; 131, mounting portion; 1311, first screw column; 132, decorative housing; 20, shaking motor; 21, driving gear; 22, first output shaft; 23, second output shaft; 24, second screw hole; 30, transmission mechanism; 31, first gear; 311, first conical tooth portion; 312, first cylindrical tooth portion; 32, second gear ; 321, second conical tooth portion; 322, second cylindrical tooth portion; 33, rack; 331, first screw hole; 332, first tooth portion; 333, second tooth portion; 334, strip-shaped avoidance opening; 40, clutch mechanism; 41, operating member; 411, driving portion; 412, locking portion; 4121, second locking surface; 4122, third guide surface; 4123, concave hole; 413, unlocking portion; 4131, contact surface; 41311, receiving groove; 4132 , second guide surface; 414, pressing portion; 415, main body; 42, first buckle; 421, first guide surface; 422, first locking surface; 43, first elastic member; 44, second elastic member; 45, third elastic member; 51, first rotating seat; 511, column; 512, second screw column; 513, rotating shaft structure; 5131, slot; 514, second wire hole; 52, second rotating seat; 521, matching shaft hole; 522, rotating slot; 52 3. Second buckle; 524. Annular groove; 60. Assembly support; 61. Arc-shaped mating surface; 62. Support body; 621. First axial hole; 622. Second axial hole; 623. First wire hole; 63. Housing; 631. Mounting groove; 632. Gear groove; 633. Assembly groove; 64. Support roller; 641. Outer roller; 642. Inner roller; 70. Wiring; 200. Fan; 210. Body assembly; 211. Body rod; 212. Chassis. DETAILED DESCRIPTION

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] See also Figures 1 to 3 The head assembly 100 provided in one embodiment of the present application includes a head body 10, an oscillating motor 20 and a clutch mechanism 40. The oscillating motor 20 is configured to drive the head body 10 to rotate around a first axis through a first transmission path and to drive the head body 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 40 is configured to control the on and off of the first transmission path and / or the second transmission path.

[0063] The head assembly 100 is used for the fan 200, and the fan 200 can be but not limited to a circulation fan. The fan 200 also includes a body assembly 210, and the head assembly 100 is connected to the body assembly 210. Specifically, the body assembly 210 includes a body rod 211 and a chassis 212, the head assembly 100 is connected to the top end of the body rod 211, and the chassis 212 is connected to the bottom end of the body rod 211. It can be understood that in order to achieve its normal function, the head body 10 includes a main motor 11, a fan blade 12, a casing 13, etc. Among them, the main motor 11 and the fan blade 12 are installed in the casing 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.

[0064] The transmission path refers to the transmission path of the output torque of the oscillating motor 20. The oscillating motor 20 can drive the head body 10 directly or indirectly. Among them, the indirect drive means that there is a transmission mechanism 30 between the oscillating motor 20 and the head body 10, and the transmission mechanism 30 is used to transmit torque and is in the transmission path as a part of the transmission path.

[0065] The direction of the second axis intersects with the direction of the first axis, that is, the head body 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 200. The height direction of the fan 200 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 is based on the first direction as the horizontal direction, and specifically the left and right direction of the fan 200, and the second direction as the vertical direction.

[0066] The head assembly 100 drives the head body 10 to shake up and down and left and right through the shaking motor 20. On this basis, the head assembly 100 can also control the transmission path of the shaking motor 20 through the clutch mechanism 40, and then control the start and stop of the shaking in the corresponding direction, that is, the head assembly 100 can achieve two-way shaking and one-way shaking by using only a single shaking motor 20. In this way, the head assembly 100 realizes the up and down and left and right shaking functions of the head body 10 through a single shaking motor 20, which helps to reduce the overall power of the fan 200, and the installation space required is also relatively small.

[0067] Please also read Figures 8 to 9 In some embodiments, the head assembly 100 also includes an assembly support 60, a first rotating seat 51 and a second rotating seat 52. The head body 10 is rotatably disposed on the assembly support 60 around a first axis. The first rotating seat 51 and the second rotating seat 52 are rotatably cooperated around the second axis. The assembly support 60 is disposed on the first rotating seat 51. The second rotating seat 52 is used to fix the body assembly 210 of the fan 200. The shaking motor 20 is disposed on the first rotating seat 51.

[0068] The head body 10 rotates around the first axis to achieve up and down shaking. At the same time, the head body 10 is indirectly arranged on the first rotating seat 51 through the assembly support 60, and the first rotating seat 51 can rotate around the second axis relative to the second rotating seat 52, and the second rotating seat 52 is fixed on the body rod 211 of the body assembly 210. Therefore, when the first rotating seat 51 rotates around the second axis relative to the second rotating seat 52, the shaking motor 20, the assembly support 60 and the head body 10 located on the assembly support 60 on the first rotating seat 51 rotate accordingly to achieve left and right shaking of the head body 10.

[0069] Specifically, the first rotating seat 51 and the second rotating seat 52 can form a second transmission path. The oscillating motor 20 is transmission-connected to the second rotating seat 52 to drive the first rotating seat 51 to rotate relative to the second rotating seat 52 around the second axis.

[0070] Thus, the oscillating motor 20 and the head body 10 are directly or indirectly arranged on the first rotating seat 51 and can rotate around the second axis together. Therefore, the oscillating motor 20 can drive the first rotating seat 51 to rotate relative to the second rotating seat 52 to achieve the head body 10 oscillating left and right.

[0071] Furthermore, the head assembly 100 further includes a transmission mechanism 30, which is disposed between the oscillating motor 20 and the head body 10, and is used to form a first transmission path. The transmission mechanism 30 has a transmission state and a non-transmission state, and the clutch mechanism 40 is connected to the transmission mechanism 30 and is configured to drive the transmission mechanism 30 to switch between the transmission state and the non-transmission state to control the on and off of the first transmission path.

[0072] It can be understood that in the transmission state, the transmission mechanism 30 is connected to the oscillating head motor 20 and the handpiece body 10, and the oscillating head motor 20 can drive the handpiece body 10 to rotate through the transmission mechanism 30. When the transmission mechanism 30 is in the non-transmission state, the oscillating head motor 20 cannot drive the handpiece body 10 to rotate around the first axis through the transmission mechanism 30, and the clutch mechanism 40 is used to control the state switching of the transmission mechanism 30.

[0073] Please also read Figure 10 to Figure 11 In some embodiments, the transmission mechanism 30 includes a rack 33 and a transmission gear. The rack 33 is disposed on the head body 10 and is arranged around the first axis. The transmission gear is connected to the shaking motor 20 and meshes with the rack 33.

[0074] The transmission gear is driven to rotate by the oscillating motor 20 , and when rotating, it drives the rack 33 meshing with it to rotate around the first axis, thereby driving the head body 10 to oscillate up and down.

[0075] In this way, the oscillating motor 20 is connected to the machine head body 10 through the transmission gear and the rack 33, and drives the machine head body 10 to oscillate up and down.

[0076] Furthermore, the housing 13 of the head body 10 has a mounting portion 131 . The mounting portion 131 is arc-shaped, and the axis thereof is the first axis. The rack 33 is mounted on the mounting portion 131 .

[0077] Specifically, 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 33 is disposed on the side of the mounting portion 131 facing away from the air inlet. The meshing teeth of the rack 33 are located on the side facing away from the mounting portion 131.

[0078] The rack 33 has a first screw hole 331, and the mounting portion 131 has a first screw column 1311 that matches the first screw hole 331, and the two are connected by screws. In addition, the housing 13 may also include a decorative shell 132, which is disposed on the side of the rack 33 that is away from the mounting portion 131, and the decorative shell 132 has a through hole, and the meshing teeth of the rack 33 are exposed at the through hole so as to mesh with the transmission gear.

[0079] Please also read Figure 12 to Figure 14 In some embodiments, the output shaft of the shaking motor 20 is arranged parallel to the second axis, and the transmission gear includes a first gear 31 and a second gear 32. The first gear 31 is configured with an axis parallel to the second axis, and the second gear 32 is configured with an axis parallel to the first axis.

[0080] The ends of the first gear 31 and the second gear 32 have gear shafts. The first gear 31 has a first conical tooth portion 311 , and the second gear 32 has a second conical tooth portion 321 and a second cylindrical tooth portion 322 . The first conical tooth portion 311 meshes with the second conical tooth portion 321 , and the second cylindrical tooth portion 322 meshes with the rack 33 .

[0081] In addition, the head assembly 100 may further include a driving gear 21, which is sleeved on the output shaft of the oscillating motor 20. The first gear 31 also has a first cylindrical tooth portion 312, and is meshed with the driving gear 21 through the first cylindrical tooth portion 312.

[0082] In this way, the torque output by the shaking motor 20 can be converted into the required direction by the first gear 31 and the second gear 32 that cooperate with each other, and then the second cylindrical tooth portion 322 of the second gear 32 drives the head body 10 to rotate around the first axis through the rack 33.

[0083] Furthermore, the second gear 32 has two groups of second cylindrical teeth 322, and the two groups of second cylindrical teeth 322 are respectively located on both sides of the first conical teeth 311 in the axial direction. The rack 33 has a first tooth portion 332 and a second tooth portion 333, and the first tooth portion 332 and the second tooth portion 333 are respectively meshed with the two groups of second cylindrical teeth 322, and the first tooth portion 332 and the second tooth portion 333 are spaced apart in the axial direction of the second gear 32 to form a strip-shaped avoidance opening 334 for avoiding the first conical teeth 311.

[0084] It can be understood that the first tooth portion 332 meshes with the second cylindrical tooth portion 322 on one side of the second gear 32 , and the second tooth portion 333 meshes with the second cylindrical tooth portion 322 on the other side of the second gear 32 .

[0085] This helps to improve the transmission stability between the rack 33 and the second gear 32 .

[0086] Please also read Figure 15 to Figure 16 In some embodiments, the assembly support 60 has an arc-shaped mating surface 61, the axis of the arc-shaped mating surface 61 is the first axis, the head body 10 is matched with the arc-shaped mating surface 61 through the mounting portion 131, and can slide along the arc-shaped mating surface 61 to rotate around the first axis.

[0087] Since the axis of the arc-shaped matching surface 61 is the first axis, the head body 10 can rotate around the first axis by sliding along the arc-shaped matching surface 61 through the mounting portion 131 .

[0088] In this way, the nose body 10 can achieve stable rotation relative to the assembly support 60 by sliding along the arc-shaped matching surface 61 .

[0089] Specifically, the assembly support 60 includes a support body 62, a shell 63 and a limiting cover (not shown), and the support body 62 forms an arc-shaped mating surface 61. The shell 63 is assembled on the first rotating seat 51 and can be connected to the first rotating seat 51 by screws. The top of the shell 63 has a mounting groove 631, and the support body 62 is arranged in the mounting groove 631, and the top of the support body 62 can pass through the rack 33 through the strip-shaped avoidance opening 334 and cooperate with the mounting portion 131. In addition, the top of the shell 63 can also form a gear groove 632, and the second gear 32 is installed in the gear groove 632. The limiting cover is arranged on the arc-shaped mating surface 61 of the support body 62, and the mounting portion 131 is at least partially located between the support body 62 and the limiting cover, so as to limit the mounting portion 131 between the two to prevent the head body 10 from detaching.

[0090] Please also read Fig.17 Furthermore, the assembly support 60 also includes a support roller 64, the axial direction of the support roller 64 is parallel to the first axis, the support roller 64 is arranged on the support body 62 and is located at the arc-shaped mating surface 61, rolling the support mounting portion 131.

[0091] In this way, the supporting roller 64 can support the mounting portion 131 and make it slide more smoothly along the arc-shaped mating surface 61, which helps the head body 10 to shake its head up and down.

[0092] Specifically, the support roller 64 includes an outer roller 641 and an inner roller 642 . The support body 62 has a first axial hole 621 and a second axial hole 622 . The outer roller 641 is installed on the support body 62 through the first axial hole 621 , and the inner roller 642 is installed on the support body 62 through the second axial hole 622 .

[0093] Please also read Figures 4 to 7In some embodiments, the first gear 31 is configured to be movable and has a transmission position and a non-transmission position. The clutch mechanism 40 is transmission-connected to the first gear 31 and is configured to be able to drive the first gear 31 to switch between the transmission position and the non-transmission position. When the first gear 31 is in the transmission position, it meshes with the second gear 32, and the transmission mechanism 30 is in a transmission state. When the first gear 31 is in the non-transmission position, it is disengaged from the second gear 32, and the transmission mechanism 30 is in a non-transmission state.

[0094] In this way, the clutch mechanism 40 only needs to drive the first gear 31 to switch between the transmission position and the non-transmission position to control the transmission mechanism 30 to switch between the transmission state and the non-transmission state, and the implementation method is simple and reliable.

[0095] Please also read Figure 18 to Figure 19 Further, the clutch mechanism 40 includes an operating member 41 and a first buckle 42. The operating member 41 has a driving portion 411 and a locking portion 412. The driving portion 411 cooperates with the first gear 31, and the operating member 41 drives the first gear 31 to move through the driving portion 411. When the operating member 41 drives the first gear 31 to move to the transmission position and / or the non-transmission position, the locking portion 412 engages with the first buckle 42. Specifically, the first gear 31 may have a matching hole, and the driving portion 411 is partially inserted into the hole.

[0096] It can be understood that the first buckle 42 is fixed relative to the second gear 32, and after the locking portion 412 is engaged with the first buckle 42, the operating member 41 can be limited, and the first gear 31 is relatively fixed to the second gear 32, so that the first gear 31 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 42 can be overcome and released by external force.

[0097] In this way, the user can drive the first gear 31 to move through the operating member 41, and the first buckle 42 enables the first gear 31 to remain in the transmission position and / or the non-transmission position after the user removes the external force.

[0098] In some embodiments, the operating member 41 is configured to be able to move along the engagement direction (eg Figure 4 The clutch mechanism 40 further comprises a first elastic member 43, which cooperates with the operating member 41 and is configured to provide a driving force for driving the operating member 41 to move in a direction opposite to the engagement direction.

[0099] Specifically, when the operating member 41 drives the first gear 31 to move to the non-transmission position, the locking portion 412 is engaged with the first buckle 42 , and one end of the locking portion 412 may have a recessed hole 4123 for assembling the first elastic member 43 .

[0100] In this way, the operating member 41 can move along the engagement direction driven by external force so that it can engage with the first buckle 42 through the locking portion 412, and move in the direction opposite to the engagement direction driven by the first elastic member 43 so that it can return to the initial position after contact engagement.

[0101] Furthermore, the first buckle 42 has a first guide surface 421 , which intersects with the engagement direction and is used to generate a guide for the first buckle 42 to be engaged.

[0102] It is understandable that the first buckle 42 can be elastically deformed. In this way, the locking portion 412 can be pressed and inserted into the first buckle 42 under the guidance of the first guide surface 421 to form an engagement therewith.

[0103] Please also read Fig. 20 Furthermore, the clutch mechanism 40 further includes a second elastic member 44, and the operating member 41 further includes an unlocking portion 413, which is disposed upstream of the locking portion 412 in the engagement direction, and the unlocking portion 413 includes a contact surface 4131 and a second guide surface 4132, and the contact surface 4131 is disposed downstream of the second guide surface 4132 in the engagement direction. The unlocking portion 413 is configured to be movable relative to the locking portion 412 in a direction parallel to the engagement direction, and the second elastic member 44 is disposed between the locking portion 412 and the unlocking portion 413, and can be compressed until the contact surface 4131 abuts against the locking portion 412. The second guide surface 4132 intersects with the engagement direction and is used to generate a guide for disengaging from the first buckle 42.

[0104] The contact surface 4131 of the unlocking portion 413 or the surface of the locking portion 412 facing the unlocking portion 413 may have a receiving groove 41311, and the receiving groove 41311 is used to receive the second elastic member 44 located between the unlocking portion 413 and the locking portion 412, so that the unlocking portion 413 abuts against the locking portion 412. For ease of understanding, the process of the operation member 41 engaging with the first buckle 42 is briefly described below:

[0105] When the locking portion 412 of the operating member 41 is not engaged with the first buckle 42, it is located upstream of the first buckle 42 in the engagement direction, and the unlocking portion 413 is spaced apart from the locking portion 412 under the action of the second elastic member 44. When the operating member 41 is subjected to an external force and moves along the engagement direction, the first elastic member 43 is compressed, and the locking portion 412 is pressed and engaged with the first buckle 42 under the action of the first guide surface 421. At this time, the first gear 31 is in a non-transmission position, and the transmission mechanism 30 is in a non-transmission state. On this basis, external force continues to be applied to the operating member 41 to drive it to continue to move along the engagement direction and continue to compress the first elastic member 43 until the unlocking portion 413, under the action of the first guide surface 421, causes the second guide surface 4132 to engage with the first buckle 42. At this time, the external force is removed, and under the action of the first elastic member 43, the locking portion 412 moves in the direction opposite to the engagement direction until it abuts against the unlocking portion 413. The locking portion 412 and the unlocking portion 413 form a whole and are jointly driven by the first elastic member 43 and guided by the second guide surface 4132 to break open and disengage from the first buckle 42, so that the operating member 41 returns to its initial position.

[0106] In this way, the user can switch the transmission mechanism 30 to the non-transmission state by driving the operating member 41 to move along the engagement direction, and can then continue to drive the operating member 41 to move along the engagement direction to switch the transmission mechanism 30 back to the transmission state.

[0107] Specifically, the first buckle 42 further has a first locking surface 422, which is located downstream of the first guide surface 421 in the engagement direction, and the locking portion 412 has a second locking surface 4121, and both the first locking surface 422 and the second locking surface 4121 are perpendicular to the engagement direction. The locking portion 412 is inserted into the first buckle 42, that is, it moves until the first locking surface 422 abuts against the second locking surface 4121, so that the locking portion 412 and the first buckle 42 are engaged.

[0108] It can be understood that the second guide surface 4132 can cover the second locking surface 4121. In other words, the second guide surface 4132 can fully block the second locking surface 4121 relative to the first locking surface 422 of the first buckle 42 to guide the locking portion 412 and prevent its second locking surface 4121 from abutting against and engaging with the first locking surface 422.

[0109] In this way, the first locking surface 422 abuts against the second locking surface 4121 , which generates an engagement effect between the locking portion 412 and the first buckle 42 , and limits the operating member 41 in a direction opposite to the engagement direction.

[0110] In addition, the locking portion 412 may also have a third guide surface 4122, which is located downstream of the second locking surface 4121 in the engagement direction, and the third guide surface 4122 intersects with the engagement direction. The third guide surface 4122 also guides the locking portion 412 to be engaged with the first buckle 42, and the angle of the third guide surface 4122 may be consistent with the angle of the first guide surface 421, so that the two can cooperate and guide together.

[0111] In some embodiments, the operating member 41 is configured to push the first gear 31 to move along the engagement direction, and the clutch mechanism 40 also includes a third elastic member 45, which cooperates with the first gear 31 and is configured to provide a driving force to drive the operating member 41 to move in a direction opposite to the engagement direction.

[0112] It can be understood that the operating member 41 can push the first gear 31 to move under the action of an external force and push it to the non-transmission position. The third elastic member 45 is used to generate a force in the opposite direction to push the first gear 31 in the opposite direction and to reach the transmission position when the external force is removed.

[0113] In this way, the operating member 41 only needs to be able to push the first gear 31 to move in a single direction, and the third elastic member 45 can drive the first gear 31 to return to the transmission position after the user removes the external force and the operating member 41 is disengaged from the first buckle 42 .

[0114] Furthermore, the first gear 31 is transmission-connected to the shaking motor 20. When the first gear 31 is in the transmission position, the second conical tooth portion 321 is meshed with the first conical tooth portion 311. When the first gear 31 is in the non-transmission position, the second conical tooth portion 321 is separated from the first conical tooth portion 311.

[0115] Please also read Fig.21 In some embodiments, the head assembly 100 further includes a mounting seat, the mounting seat having a column 511, the column 511 extending in a direction parallel to the engagement direction, and having an axial hole therein, the gear shaft of the first gear 31 being rotatably disposed in the axial hole, the third elastic member 45 being disposed in the axial hole and abutting against the gear shaft of the first gear 31. The mounting seat may be the first rotating seat 51.

[0116] Thus, the mounting seat provides a mounting position for the first gear 31 and the third elastic member 45, and enables the first gear 31 to move in a direction parallel to the engagement direction. The first elastic member 43, the second elastic member 44 and the third elastic member 45 can all be, but are not limited to, springs.

[0117] In some embodiments, the first buckle 42 is disposed on the mounting seat, and the first buckle 42 is an annular buckle. The first elastic member 43 is disposed in the first buckle 42 and abuts against the operating member 41 .

[0118] Thus, the mounting seat provides a stable mounting position for the first buckle 42 and the first elastic member 43, and also facilitates the engagement of the operating member 41 with the annular buckle. Accordingly, the cross-sections of the locking portion 412 and the unlocking portion 413 are both generally annular or circular structures.

[0119] In some embodiments, the housing 63 further has an assembly groove 633, which extends in a direction parallel to the engagement direction, and the operating member 41 is disposed in the assembly groove 633 and is configured to be movable along the assembly groove 633. The operating member 41 further has a pressing portion 414, which is at least partially located outside the housing 63.

[0120] The operating member 41 may further include a main body 415, the main body 415 is assembled in the assembly groove 633, the unlocking portion 413 may be sleeved on the main body 415, the top of the main body 415 is a pressing portion 414, the bottom of the main body 415 abuts against the locking portion 412, and the driving portion 411 is connected to the main body 415. Specifically, when the first gear 31 is in the transmission position, the operating member 41 is in the initial position, and the driving portion 411 abuts against the lower edge of the assembly groove 633 of the housing 63 to prevent the operating member 41 from continuing to move in the direction opposite to the engagement direction.

[0121] In this way, the user can drive the operating portion to move along the engagement direction by pressing the pressing portion 414 .

[0122] Please also read Figure 22 to Figure 23 In some embodiments, the shaking motor 20 has a first output shaft 22 and a second output shaft 23. The first output shaft 22 is connected to the head body 10 in a transmission manner, and the second output shaft 23 is engaged with the second rotating seat 52 in a rotation direction around the second axis.

[0123] The oscillating motor 20 is a dual-axis motor, and both output shafts are parallel to the second axis. The driving gear 21 is sleeved on the first output shaft 22 of the oscillating motor 20. The first rotating seat 51 has a mounting position for mounting the oscillating motor 20, and the oscillating motor 20 has a second screw hole 24. The first rotating seat 51 has a second screw column 512 that matches the second screw hole 24. The oscillating motor 20 is fixed to the first rotating seat 51 by screw fixing through the second screw hole 24 and the screw column. In addition, the first rotating seat 51 also has a column 511 for rotating and mounting the second gear 32.

[0124] The second output shaft 23 is engaged with the second rotating seat 52 to prevent rotation. Since the second rotating seat 52 is fixed on the fuselage rod 211, when the second output shaft 23 outputs torque, a reaction force will be generated to drive the shaking motor 20 to drive the first rotating seat 51 to rotate, and then drive the assembly support 60 and the head body 10 to rotate around the second axis.

[0125] In this way, the oscillating motor 20 can drive the oscillation up and down and left and right through the two output shafts.

[0126] Further, the end section of the second output shaft 23 is non-circular, and the second rotating seat 52 has a matching shaft hole 521 that matches the end of the second output shaft 23. It can be understood that the matching shaft hole 521 is non-circular that matches the end of the second output shaft 23.

[0127] Specifically, the end section of the first output shaft 22 is also non-circular, and the ends of the first output shaft 22 and the second output shaft 23 can be flat, and accordingly, the matching shaft hole 521 is also flat. Similarly, the driving gear 21 has a flat shaft hole, and the end of the first output shaft 22 is inserted into the shaft hole of the driving gear 21 to achieve a non-rotational fit between the two.

[0128] In this way, the end of the second output shaft 23 is inserted into the matching shaft hole 521 , so that the second output shaft 23 and the second rotating seat 52 can be locked in rotation.

[0129] Further, the first rotating seat 51 has a rotating shaft structure 513, the rotating shaft structure 513 extends in the direction of the second axis, and the second rotating seat 52 has a rotating groove 522 matched with the rotating shaft structure 513. One of the rotating shaft structure 513 and the rotating groove 522 has a second buckle 523, and the other has a clamping groove 5131, and the clamping groove 5131 is clamped with the second buckle 523 to generate a limit in the direction of the second axis.

[0130] Specifically, the rotating shaft structure 513 is hollow, the rotating groove 522 is arranged around the matching shaft hole 521 , and the second output shaft 23 passes through the rotating shaft structure 513 and matches with the matching shaft hole 521 .

[0131] In this way, the first rotating seat 51 can rotate with the second rotating seat 52 around the second axis through the rotating shaft structure 513, and the cooperation between the second buckle 523 and the slot 5131 can reduce the probability of abnormal separation between the two.

[0132] Furthermore, the surface of the second rotating seat 52 that matches the first rotating seat 51 has an annular groove 524. The annular groove 524 is formed around the second axis and can constrain and guide the first rotating seat 51 to rotate.

[0133] In some embodiments, the support body 62 has a first wire hole 623, and the first rotating seat 51 has a second wire hole 514. The head assembly 100 also includes a wiring 70, which passes through the first wire hole 623 and the second wire hole 514 and is connected to the power plug at the lower end. The wiring 70 adopts an eccentric routing to maximize the use of space to set the transmission mechanism 30, the clutch mechanism 40, etc., and the wiring is not bent, and the operation is reliable.

[0134] The present application also provides a fan 200, comprising the above-mentioned head assembly 100. It can be understood that, in order to achieve its normal function, the fan 200 also includes a body assembly 210, and the head assembly 100 is connected to the body assembly 210.

[0135] The assembly process of the fan 200 is briefly described below:

[0136] During the assembly process, first assemble the outer roller 641 to the first axial hole 621 of the support body 62, then assemble the inner roller 642 to the second axial hole 622 of the support body 62, and then pass the support body 62 through the strip-shaped avoidance opening 334 of the rack 33, and then fix the rack 33 and the mounting part 131 by screwing the first screw hole 331 of the rack 33 and the first screw column 1311 of the mounting part 131, and finally install the decorative shell 132 to complete the assembly of the head body 10.

[0137] Subsequently, the second gear 32 is assembled into the gear groove 632 in the housing 63 through the gear shaft, and then the support body 62 is assembled into the mounting groove 631 of the housing 63, and the housing 63 is fixed by screwing. Then, the operating member 41 is assembled into the assembly groove 633 of the housing 63 through the main body 415, and the pressing portion 414 is exposed, the unlocking portion 413 is sleeved on the main body 415 of the operating member 41, and then the second elastic member 44 is assembled into the receiving groove 41311 in the unlocking portion 413, and then the locking portion 412 is assembled to one end of the main body 415 by welding or screwing, and then the first elastic member 43 is assembled into the concave hole 4123 of the locking portion 412, thereby completing the main assembly work of the clutch mechanism 40.

[0138] Then, assemble the third elastic member 45 into the column 511 of the first rotating seat 51, and assemble the first gear 31 into the column 511 of the first rotating seat 51 through the gear shaft, and abut against the third elastic member 45, so as to complete the assembly of the first gear 31 and the second gear 32. Then, the second screw hole 24 in the oscillating motor 20 is fixedly connected with the second screw column 512 in the first rotating seat 51 by screwing. Then, assemble the driving gear 21 to the first output shaft 22 in the oscillating motor 20 through its shaft hole, and finally assemble the first rotating seat 51 to the housing 63 by screwing, and make the driving part 411 of the operating member 41 cooperate with the first gear 31.

[0139] Finally, the rotating groove 522 in the second rotating seat 52 is plugged into the rotating shaft structure 513 of the first rotating seat 51. A second buckle 523 is provided in the rotating groove 522 to realize the snap connection with the rotating shaft structure 513. At the same time, the second output shaft 23 in the shaking motor 20 is inserted into the matching shaft hole 521 of the second rotating seat 52, thereby completing the assembly of the entire head assembly 100. The head assembly 100 can be further installed on the body assembly 210 through the second rotating seat 52.

[0140] When the user turns on the shaking function of the fan 200, the first output shaft 22 of the shaking motor 20 drives the driving gear 21 to rotate, and the driving gear 21 meshes with the first cylindrical tooth portion 312 of the first gear 31, thereby driving the first gear 31 to operate, and the first conical tooth portion 311 of the first gear 31 meshes with the second conical tooth portion 321 of the second gear 32, thereby driving the second gear 32 to operate, and the second cylindrical tooth portion 322 on the second gear 32 meshes with the rack 33, thereby driving the head body 10 to shake up and down. At the same time, the reaction force generated by the second output shaft 23 of the shaking motor 20 and the second rotating seat 52 can drive the head body 10 to rotate through the shaking motor 20, the first rotating seat 51, the housing 63 and the support body 62 to achieve left and right shaking.

[0141] In addition, when the user only wants to start the left and right shaking, the user needs to press the operating member 41 through the pressing portion 414, so that the third guide surface 4122 of the locking portion 412 contacts the first guide surface 421 of the first buckle 42, and the first buckle 42 is ejected outward until the second locking surface 4121 of the locking portion 412 contacts the first locking surface 422 of the first buckle 42. At this time, the operating member 41 will also drive the first gear 31 to move downward at the same time, so that the first gear 31 and the second gear 32 will be separated, so that the second gear 32 will not operate, the up and down shaking will stop, and only the left and right shaking will be activated. When the user wants to start the up and down shaking, he only needs to press the operating member 41 through the pressing part 414 again. At this time, the first buckle 42 will be deformed outward by the unlocking part 413, and then the first locking surface 422 of the first buckle 42 will contact the second guide surface 4132 of the unlocking part 413. Then, when the operating member 41 continues to be pressed down, the second elastic member 44 will continue to be compressed into the accommodating groove 41311 of the unlocking part 413 until the unlocking part 413 contacts the locking part 412 and the pressing force is removed. At this moment, under the action of the first elastic member 43, the operating member 41 will move upward until the driving part 411 of the operating member 41 contacts the lower edge of the assembly groove 633 of the shell 63, and then it returns to the initial position. During this process, the first gear 31 moves upward and meshes with the second gear 32, and the up and down shaking starts working again.

[0142] The fan 200 has an integrated design for its up, down, left, and right shaking functions, so that the shaking mechanism is integrated into the body of the machine and the overall center of gravity is lowered, so that the center of gravity of the entire machine is very close to the left and right shaking mechanism. The resistance that the left and right shaking needs to overcome is small, and the operation is stable. At the same time, the center of gravity at the head of the machine is at a certain distance from the second gear 32, so the driving force does not need to be much, and it is enough to use one shaking motor 20 to drive the shaking in two directions to operate simultaneously.

[0143] 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.

[0144] 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 head assembly for a fan, characterized in that: The head assembly includes a head body (10), an oscillating motor (20) and a clutch mechanism (40), wherein the oscillating motor (20) is configured to drive the head body (10) to rotate around a first axis through a first transmission path and to drive the head body (10) to rotate around a second axis through a second transmission path, and the direction of the second axis intersects with the direction of the first axis; the clutch mechanism (40) is configured to control the on and off of the first transmission path and / or the second transmission path.

2. The head assembly according to claim 1, characterized in that: The head assembly also includes an assembly support (60), a first rotating seat (51) and a second rotating seat (52); the head body (10) is rotatably arranged on the assembly support (60) around the first axis; the first rotating seat (51) and the second rotating seat (52) are rotatably matched around the second axis; the assembly support (60) is arranged on the first rotating seat (51); the second rotating seat (52) is used for fixedly connecting the body assembly (210) of the fan; and the shaking motor (20) is arranged on the first rotating seat (51).

3. The head assembly according to claim 2, characterized in that: The head assembly also includes a transmission mechanism (30), which is arranged between the shaking head motor (20) and the head body (10) and is used to form the first transmission path; the transmission mechanism (30) has a transmission state and a non-transmission state, and the clutch mechanism (40) is transmission-connected to the transmission mechanism (30) and is configured to be able to drive the transmission mechanism (30) to switch between the transmission state and the non-transmission state to control the on and off of the first transmission path.

4. The head assembly according to claim 3, characterized in that: The transmission mechanism (30) comprises a rack (33) and a transmission gear. The rack (33) is arranged on the head body (10) and is arranged around the first axis. The transmission gear is connected to the oscillating motor (20) and meshes with the rack (33).

5. The head assembly according to claim 4, characterized in that: The transmission gear comprises a first gear (31) and a second gear (32), wherein the first gear (31) is configured such that an axis thereof is parallel to the second axis, and the second gear (32) is configured such that an axis thereof is parallel to the first axis; The first gear (31) has a first conical tooth portion (311), the second gear (32) has a second conical tooth portion (321) and a second columnar tooth portion (322), the first conical tooth portion (311) meshes with the second conical tooth portion (321), and the second columnar tooth portion (322) meshes with the rack (33).

6. The head assembly according to claim 5, characterized in that: The second gear (32) has two groups of the second cylindrical tooth portions (322), and the two groups of the second cylindrical tooth portions (322) are respectively located on two sides of the first conical tooth portion (311) in the axial direction; The rack (33) comprises a first tooth portion (332) and a second tooth portion (333), wherein the first tooth portion (332) and the second tooth portion (333) are respectively meshed with two groups of the second cylindrical tooth portions (322), and the first tooth portion (332) and the second tooth portion (333) are spaced apart in the axial direction of the second gear (32) to form a strip-shaped avoidance opening (334) for avoiding the first conical tooth portion (311).

7. The head assembly according to claim 6, characterized in that: The head body (10) comprises a housing (13), the housing (13) has a mounting portion (131), the mounting portion (131) is arc-shaped, and the axis is the first axis, and the rack (33) is mounted on the mounting portion (131).

8. The head assembly according to claim 7, characterized in that: The assembly support (60) has an arc-shaped mating surface (61), the axis of the arc-shaped mating surface (61) is the first axis, and the head body (10) is matched with the arc-shaped mating surface (61) through the mounting portion (131) and can slide along the arc-shaped mating surface (61).

9. The head assembly according to claim 8, characterized in that: The head assembly further comprises a supporting roller (64), the axial direction of which is parallel to the first axis and is arranged at the arc-shaped matching surface (61) to rollingly support the mounting portion (131).

10. The head assembly according to claim 5, characterized in that: The first gear (31) is configured to be movably arranged and has a transmission position and a non-transmission position; the clutch mechanism (40) is transmission-connected to the first gear (31) and is configured to be able to drive the first gear (31) to switch between the transmission position and the non-transmission position; When the first gear (31) is in the transmission position, it meshes with the second gear (32), and the transmission mechanism (30) is in a transmission state; when the first gear (31) is in the non-transmission position, it disengages from the second gear (32), and the transmission mechanism (30) is in a non-transmission state.

11. The head assembly according to claim 10, characterized in that: The clutch mechanism (40) comprises an operating member (41) and a first buckle (42); the operating member (41) has a driving portion (411) and a locking portion (412); the driving portion (411) cooperates with the first gear (31); the operating member (41) drives the first gear (31) to move via the driving portion (411); when the operating member (41) drives the first gear (31) to move to the transmission position and / or the non-transmission position, the locking portion (412) engages with the first buckle (42).

12. The head assembly according to claim 11, characterized in that: The operating member (41) is configured to be movable along the engagement direction until the locking portion (412) engages with the first buckle (42); the clutch mechanism (40) further comprises a first elastic member (43), the first elastic member (43) cooperates with the operating member (41) and is configured to provide a driving force for driving the operating member (41) to move in a direction opposite to the engagement direction; The first buckle (42) has a first guide surface (421), the first guide surface (421) intersects with the engagement direction and is used to generate a guide for engaging the first buckle (42); The clutch mechanism (40) further comprises a second elastic member (44); the operating member (41) further comprises an unlocking portion (413); the unlocking portion (413) is arranged upstream of the locking portion (412) in the engagement direction; the unlocking portion (413) comprises a contact surface (4131) and a second guide surface (4132); the contact surface (4131) is arranged downstream of the second guide surface (4132) in the engagement direction; the unlocking portion (413) is configured to be movable relative to the locking portion (412) in a direction parallel to the engagement direction; the second elastic member (44) is arranged between the locking portion (412) and the unlocking portion (413) and can be compressed until the contact surface (4131) abuts against the locking portion (412); the second guide surface (4132) intersects with the engagement direction and is used to generate a guide for disengaging from the first buckle (42).

13. The head assembly according to claim 12, characterized in that: The operating member (41) is configured to be able to push the first gear (31) to move along the engagement direction, and the clutch mechanism (40) further includes a third elastic member (45), the third elastic member (45) cooperates with the first gear (31) and is configured to provide a driving force for driving the operating member (41) to move in a direction opposite to the engagement direction.

14. The head assembly according to claim 13, characterized in that: The head assembly further comprises a housing (63), the housing (63) having an assembly groove (633), the assembly groove (633) extending in a direction parallel to the engagement direction, the operating member (41) being disposed in the assembly groove (633) and being configured to be movable along the assembly groove (633); the operating member (41) further comprising a pressing portion (414), the pressing portion (414) being at least partially located outside the housing (63); And / or, the head assembly further comprises a mounting seat, the mounting seat having a column (511), the column (511) extending in a direction parallel to the engagement direction and having an axial hole therein, the gear shaft of the first gear (31) being rotatably disposed in the axial hole, the third elastic member (45) being disposed in the axial hole and abutting against the gear shaft of the first gear (31); And / or, the head assembly also includes a mounting seat, the first buckle (42) is arranged on the mounting seat, and the first buckle (42) is an annular buckle, and the first elastic member (43) is arranged in the first buckle (42) and abuts against the operating member (41).

15. The head assembly according to any one of claims 2 to 14, characterized in that: The shaking motor (20) has a first output shaft (22) and a second output shaft (23), wherein the first output shaft (22) is drivingly connected to the machine head body (10), and the second output shaft (23) is anti-rotatably engaged with the second rotating seat (52) in the direction of rotation around the second axis.

16. The head assembly according to claim 15, characterized in that: The cross section of the end of the second output shaft (23) is non-circular, and the second rotating seat (52) has a matching shaft hole (521) that matches the end of the second output shaft (23); And / or, the first rotating seat (51) has a rotating shaft structure (513), the rotating shaft structure (513) extends along the direction of the second axis, and the second rotating seat (52) has a rotating groove (522) that cooperates with the rotating shaft structure (513); one of the rotating shaft structure (513) and the rotating groove (522) has a second buckle (523), and the other has a slot (5131), the slot (5131) is engaged with the second buckle (523), and generates a limit in the direction of the second axis.

17. A fan, characterized in that: Comprising a head assembly as described in any one of claims 1-16.

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