A nosepiece and fan

Abstract

The application discloses a machine head and a fan. The machine head comprises a fan blade driving assembly and a rotating assembly. The fan blade driving assembly comprises a first driving assembly and a first mounting member. The first driving assembly comprises a first driving member for driving the fan blade to rotate around the X-axis direction. The first driving member is connected to the first mounting member. The rotating assembly comprises a fixing base, a rotating member, a second mounting member and a second driving assembly. The second mounting member is connected to the rotating member. The second driving assembly comprises a second driving member and a movable member. The fixing base is provided with a receiving cavity. The rotating member is received in the receiving cavity. The rotating member is provided with a mounting cavity. The second driving assembly is received in the mounting cavity of the rotating member and is connected to the rotating member. The second driving member can drive the movable member to move so as to drive the rotating member to rotate. The first mounting member is rotatably connected to the second mounting member. When the machine head is applied to the fan, the machine head can meet the requirements of air outlet, air outlet direction change and rotating air outlet. Meanwhile, the machine head uses fewer components, and the installation process of the machine head is simplified.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrical appliances, in particular to a fan head and a fan. BACKGROUND

[0002] In the related art, in order to realize the rotation of the fan blade and the change of the fan blowing direction, the fan head needs to be provided with two driving members to realize the above functions. The existing fan head generally needs to be provided with multiple components to support and fix the two driving members, and the change of the fan blowing direction is realized by additionally providing a fixed shaft structure, which results in too many components and a complicated production process. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a fan head which can reduce the use of components and simplify the installation process while ensuring the function of the fan head.

[0004] The present application also provides a fan with the above fan head.

[0005] The fan head according to the first aspect of the present application comprises:

[0006] The fan blade driving assembly comprises a first driving assembly and a first mounting member. The first driving assembly comprises a first driving member and a mounting seat. The mounting seat is used for sleeving the fan blade. The first driving member is used for driving the rotation of the fan blade. The first driving member is connected to the first mounting member.

[0007] The rotating assembly comprises a fixed seat, a rotating member, a second mounting member and a second driving assembly. The second mounting member is connected to the side of the rotating member away from the fixed seat. The second driving assembly comprises a second driving member and a movable member. The fixed seat is provided with a receiving cavity. The rotating member is received in the receiving cavity. The second driving assembly is received in the receiving cavity and connected to the rotating member. The second driving member can drive the movable member to move, so as to drive the rotating member to rotate relative to the fixed seat around the Z-axis direction.

[0008] The first mounting member is rotatably connected to the second mounting member and can rotate relative to the second mounting member around the Y-axis direction.

[0009] According to the head of the embodiment of the present application, at least the following beneficial effects are achieved: the first driving assembly is connected to the first mounting member, the first driving assembly comprises a first driving member capable of driving the fan blade to rotate to achieve air outlet, the second mounting member is rotationally connected to the first mounting member, the rotating member is connected to the second mounting member, and the second driving member is capable of driving the movable member to move to drive the rotating member to rotate relative to the fixed seat around the Z-axis direction. The first driving member and the second driving member are respectively connected to the first mounting member and the second mounting member, and the first mounting member and the second mounting member are rotationally connected, so that when the head is applied to the fan, the air outlet, the change of the air outlet direction around the X-axis, and the rotation of the air outlet can be achieved with fewer components, which simplifies the installation process of the head and reduces the cost.

[0010] According to some embodiments of the present application, a panel is further included, the first driving assembly further comprises a fixed shaft and a mounting seat, the mounting seat is used for sleeving the fan blade, the fixed shaft is arranged in the mounting seat and penetrates the first driving member, the panel and the first mounting member are respectively located at two ends of the mounting seat along the length direction, the panel is connected to the fixed shaft, the inside of the fixed shaft is hollow and forms a first channel, the first channel is used for penetrating a wire, the wire can extend to the panel and the first mounting member, and the first mounting member can be electrically connected with an external power supply.

[0011] According to some embodiments of the present application, a damper is further included, the damper is arranged at the connection between the first mounting member and the second mounting member, the damper can fix the first mounting member and the second mounting member, so that the first mounting member and the second mounting member have a set angle around the Y-axis direction.

[0012] According to some embodiments of the present application, the first mounting member comprises a main body part and a connecting part, the first driving assembly is connected to the main body part, the second mounting member is provided with a mounting hole, the damper penetrates the mounting hole and is connected to the connecting part.

[0013] According to some embodiments of the present application, the rotating member is provided with a mounting part, the mounting part is provided with a mounting cavity and an opening, the opening communicates the accommodating cavity and the mounting cavity, and the movable member penetrates the opening and contacts the inner wall of the fixed seat.

[0014] According to some embodiments of the present application, the mounting cavity comprises a first cavity section and a second cavity section which are in communication with each other, the second driving member is accommodated in the first cavity section and abuts against the bottom wall of the first cavity section, the rotating member is accommodated in the second cavity section, and the opening communicates the accommodating cavity and the second cavity section.

[0015] According to some embodiments of the present application, the inner wall of the fixed seat is provided with two limiting portions, which are arranged at intervals along the direction in which the rotating member rotates relative to the fixed seat, the mounting portion comprises a protruding portion, the protruding portion is provided with the second cavity section, the protruding portion is arranged between the two limiting portions, and the side wall of the protruding portion away from the second cavity section can abut against the corresponding limiting portion to limit the rotation of the rotating member.

[0016] According to some embodiments of the present application, the rotating member is further provided with a rotating portion extending away from the second mounting member, and the bearing is sleeved on the rotating portion and abuts against the inner wall of the fixed seat.

[0017] According to the fan of the second aspect of the embodiments of the present application, the fan comprises a fan body, a support assembly, and the head provided by the first aspect of the embodiments, the fixed seat is connected to the support assembly, and the fan body is connected to the rotating member.

[0018] According to the fan of the embodiments of the present application, at least the following beneficial effects are achieved: the fan has all the advantages of the head provided by the first aspect of the embodiments, the first driving assembly is connected to the first mounting member, the first driving assembly comprises a first driving member capable of driving the fan blade to rotate to achieve air outlet, the second mounting member is rotationally connected to the first mounting member, the rotating member is connected to the second mounting member, and the second driving member is capable of driving the movable member to move to drive the rotating member to rotate relative to the fixed seat around the Z-axis direction. The first driving member and the second driving member are respectively connected to the first mounting member and the second mounting member, and the first mounting member and the second mounting member are rotationally connected, so that when the head is applied to the fan, the air outlet, the change of the air outlet direction around the X-axis, and the rotation of the air outlet can be achieved at the same time, the number of components is reduced, the installation process of the head is simplified, the cost is low, and accordingly the assembly steps of the fan are reduced.

[0019] According to some embodiments of the present application, the battery is detachably connected to the side of the first mounting member away from the first driving assembly, and the battery can supply power to the first driving member and the second driving member.

[0020] Additional aspects and advantages of the present application will be given in part in the following description, will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0021] The present application will be further described below in conjunction with the drawings and embodiments, in which:

[0022] Figure 1 FIG. 1 is a schematic view of the head of the embodiments of the present application;

[0023] Figure 2 is a sectional view of the handpiece of an embodiment of the application;

[0024] Figure 3 is an exploded view of the handpiece of an embodiment of the application;

[0025] Figure 4 is a schematic view of the fixing seat of an embodiment of the application;

[0026] Figure 5 is a schematic view of the rotating member of an embodiment of the application;

[0027] Figure 6 is a schematic view of the fan of an embodiment of the application.

[0028] Reference signs:

[0029] Fan blade driving assembly 100, first driving assembly 110, first driving member 111, fixing shaft 112, first channel 1121, mounting seat 113, first mounting member 120, main body part 121, connecting part 122;

[0030] Rotating assembly 200, fixing seat 210, accommodating cavity 211, limiting part 212, inner tooth 213;

[0031] Rotating member 220, mounting part 221, mounting cavity 2211, first cavity section 22111, second cavity section 22112, opening 2212, protruding part 2213, rotating part 222;

[0032] Second mounting member 230;

[0033] Second driving assembly 240, second driving member 241, movable member 242;

[0034] Panel 300, damper 400, bearing 500, fan blade 600, support assembly 700, battery 800, first support member 900. DETAILED DESCRIPTION

[0035] Embodiments of the present application are described in detail below with reference to the accompanying drawings, in which the same or similar elements or elements having the same or similar functions are denoted by the same or similar reference numerals throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are intended only for the purpose of explaining the present application, and should not be understood as limiting the present application.

[0036] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or position relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be understood as limiting the present application.

[0037] In the description of the present application, if the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, within, etc. are understood as including the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0038] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0039] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0040] Referring to Figures 1 to 5 , the first aspect embodiment of the present application provides a head, comprising a fan blade driving assembly 100 and a rotating assembly 200. Wherein, the fan blade driving assembly 100 comprises a first driving assembly 110 and a first mounting member 120, the first driving assembly 110 comprises a first driving member 111 and a mounting seat 113, the mounting seat 113 is used for sleeving the fan blade 600, the first driving member 111 is used for driving the fan blade 600 to rotate, the first driving member 111 is connected to the first mounting member 120, wherein, the first driving member 111 can be directly connected to the first mounting member 120, or as shown, the first driving member 111 can be indirectly connected to the first mounting member 120 through a fixed shaft 112. Figure 2

[0041] The rotating assembly 200 comprises a fixed seat 210, a rotating member 220, a second mounting member 230 and a second driving assembly 240, the second mounting member 230 is connected to one side of the rotating member 220 away from the fixed seat 210, the second driving assembly 240 comprises a second driving member 241 and a movable member 242, the fixed seat 210 is provided with a containing cavity 211, the rotating member 220 is contained in the containing cavity 211, the second driving assembly 240 is contained in the containing cavity 211 and connected to the rotating member 220, for example, referring to Figure 3 and Figure 5 ​The rotating member 220 can be provided with a mounting cavity 2211, and the second driving assembly 240 is accommodated in the mounting cavity 2211 and connected to the rotating member 220, so that the rotating member 220 and the second driving assembly 240 are both accommodated in the accommodating cavity 211. The second driving member 241 can drive the movable member 242 to move to drive the rotating member 220 to rotate relative to the fixed seat 210 around the Z-axis direction. The first mounting member 120 is rotatably connected to the second mounting member 230 and can rotate relative to the second mounting member 230 around the Y-axis direction.

[0042] The first driving assembly 110 is connected to the first mounting member 120, and the first driving assembly 110 includes a first driving member 111 capable of driving the fan blade 600 to rotate to realize air outlet. The second mounting member 230 is rotatably connected to the first mounting member 120, and the rotating member 220 is connected to the second mounting member 230. The second driving member 241 can drive the movable member 242 to move to drive the rotating member 220 to rotate relative to the fixed seat 210 around the Z-axis direction. The first driving member 111 and the second driving member 241 are respectively connected to the first mounting member 120 and the second mounting member 230, and the first mounting member 120 and the second mounting member 230 are rotatably connected, so that when the head is applied to the fan, the fan can meet the requirements of air outlet, air outlet direction change around the X-axis, and fan rotation around the Z-axis direction. At the same time, compared with the head of the prior art, the head of the present application has the advantages of less use components, more compact structure, simplified installation process and lower cost. At the same time, the above-mentioned head is a modular design, which can be adapted to different types of fans. The first driving member 111 and the second driving member 241 can be selected as motors.

[0043] Specifically, the first mounting member 120 and the second mounting member 230 are both sheet metal parts, which have certain strength and are not easy to deform, and at the same time, the weight is also low. Therefore, the second driving member 241 needs smaller force to drive the rotating member 220 to rotate through the driving gear, so that the second driving member 241 can be selected as a motor with smaller power, which can drive the rotating member 220 to rotate relative to the fixed seat 210, and the volume is also smaller, which is convenient for storage and storage.

[0044] Referring to Figure 2 and Figure 3In some embodiments, the head further comprises a panel 300, the first driving assembly 110 further comprises a mounting seat 113 and a fixed shaft 112, the mounting seat 113 is used for sleeving the fan blade 600, the fan blade 600 comprises a fan blade seat and a plurality of blades, the plurality of blades are arranged at intervals on the outer periphery of the fan blade seat. The fixed shaft 112 is arranged in the mounting seat 113 and penetrates the first driving member 111, the panel 300 and the first mounting member 120 are respectively located at two ends of the mounting seat 113 along the length direction, the panel 300 is fixedly connected to the fixed shaft 112, the inside of the fixed shaft 112 is hollow and forms a first channel 1121, the first channel 1121 is used for penetrating the wire, the wire has a set distance from the inner wall of the first channel 1121 to avoid touching and causing wire abrasion when in use, the wire can extend to the panel 300 and the first mounting member 120, and the wire can be electrically connected with the external power supply. When the fan is used, the first driving member 111 drives the mounting seat 113 and the fan blade 600 to rotate together, so as to realize air outlet, and when different air outlet effects need to be realized, the fan blade 600 with different shaped blades can be replaced. The panel 300 can be selected as a touch panel and is electrically connected with the power supply by penetrating the wire in the first channel 1121, and the power supply can be an external power supply or a built-in power supply such as a battery arranged on the head. When the first driving member 111 drives the mounting seat 113 to rotate, the electrical connection between the panel 300 and the power supply will not be affected, and the stability of the power supply to the panel 300 can be ensured. Specifically, the first driving assembly 110 can be selected as an outer rotor motor comprising a core coil and a magnetic ring, that is, the first driving member 111 is a core coil sleeved on the fixed shaft 112, the magnetic ring is arranged in the mounting seat 113, and the core coil can generate a changing magnetic field to drive the mounting seat 113 to rotate.

[0045] Referring to Figure 3 In some embodiments, the head further comprises a damper 400, the damper 400 is arranged at the connection between the first mounting member 120 and the second mounting member 230, the damper 400 can fix the first mounting member 120 and the second mounting member 230, so that the first mounting member 120 and the second mounting member 230 have a set angle around the Y-axis direction. When the angle between the first mounting member 120 and the second mounting member 230 needs to be adjusted around the Y-axis direction, since the second mounting member 230 is generally connected to the support assembly 700, only the action force around the Y-axis direction needs to be applied to the first mounting member 120 to make the first mounting member 120 rotate to the position relative to the second mounting member 230, and the damper 400 can ensure that the posture of the first mounting member 120 relative to the second mounting member 230 does not change under the condition that other external forces are not affected, so that the angle of the air flow relative to the X-Y plane does not change when the fan blows air.

[0046] Referring to Figure 3In some embodiments, the first mounting member 120 comprises a main body portion 121 and a connecting portion 122, the first driving assembly 110 is connected to the main body portion 121, the second mounting member 230 is provided with a mounting hole, the damper 400 is arranged through the mounting hole and connected to the connecting portion 122. Specifically, the main body portion 121 and the connecting portion 122 are perpendicular to each other in the extending direction, the handpiece further comprises a first supporting member 900, the first mounting member 120 is spaced apart from two connecting portions 122 in the Y-axis direction, the connecting portion 122 is provided with a through hole, the damper 400 is arranged through the mounting hole and the through hole provided on one connecting portion 122, and the first supporting member 900 is arranged through the mounting hole and the through hole provided on the other connecting portion 122 and extends towards the main body portion 121, so as to enhance the connection strength between the connecting portion 122 and the main body portion 121. The damper 400 and the first supporting member 900 are connected to the connecting portion 122 and the second mounting member 230 through fasteners.

[0047] With reference to Figure 3 and Figure 5 In some embodiments, the rotating member 220 is provided with a mounting portion 221, the mounting portion 221 is provided with a mounting cavity 2211 and an opening 2212, the opening 2212 is in communication with the containing cavity 211 and the mounting cavity 2211, and the movable member 242 is arranged through the opening 2212 and in contact with the inner wall of the fixed seat 210. Specifically, the inner wall of the fixed seat 210 is arc-shaped and sequentially provided with a plurality of inner teeth 213 in the circumferential direction, the movable member 242 is selected as a gear, the gear is engaged with the inner teeth 213 provided on the fixed seat 210, and the second driving member 241 drives the movable member 242 to rotate so as to rotate the rotating member 220 relative to the fixed seat 210, thereby changing the outflow direction of the fan. It can be understood that the gear transmission is used to rotate the rotating member 220 relative to the fixed seat 210, which has good stability and is not easy to be damaged, thereby prolonging the service life of the handpiece.

[0048] With reference to Figure 3 and Figure 5 In some embodiments, the mounting cavity 2211 comprises a first cavity section 22111 and a second cavity section 22112 which are in communication with each other, the second driving member 241 is contained in the first cavity section 22111 and abuts against the bottom wall of the first cavity section 22111, the movable member 242 is contained in the second cavity section 22112, and the opening 2212 is in communication with the containing cavity 211 and the second cavity section 22112. The shape of the first cavity section 22111 is adapted to the second driving member 241, and the shape of the second cavity section 22112 is adapted to the movable member 242, so that the second driving member 241 can be positioned by abutting against the bottom wall of the first cavity section 22111 while reducing the occupation of the space in the containing cavity 211, thereby making the overall structure of the handpiece compact.

[0049] With reference to Figure 3 and Figure 4In some embodiments, the inner wall of the fixed seat 210 is provided with two limiting portions 212, which are spaced apart along the direction in which the rotating member 220 rotates relative to the fixed seat 210. The mounting portion 221 includes a protruding portion 2213, which is provided with a second cavity section 22112. The protruding portion 2213 is arranged between the two limiting portions 212. The side wall of the protruding portion 2213, which is away from the second cavity section 22112, can abut against the corresponding limiting portion 212 to limit the rotation of the rotating member 220. Specifically, the inner wall of the fixed seat 210 is provided with a plurality of inner teeth 213, which correspond to a central angle of 180°. The two limiting portions 212 are respectively located outside the inner teeth 213 at the two ends in the circumferential direction. When the second driving member 241 drives the movable member 242 to rotate to contact the inner teeth 213 at the end portion, the protruding portion 2213 abuts against the limiting portion 212 to limit the further rotation of the rotating member 220, so as to prevent the movable member 242 from continuously rotating and disengaging from the inner teeth 213.

[0050] With reference to Figure 2 and Figure 3 In some embodiments, the handpiece further includes a plurality of bearings 500. The rotating member 220 is further provided with a rotating portion 222, which extends away from the second mounting member 230. The bearings 500 are sleeved on the rotating portion 222 and abut against the inner wall of the fixed seat 210. The bearings 500 can prevent the rotating portion 222 from contacting the fixed seat 210 when the rotating member 220 rotates relative to the fixed seat 210, and reduce the friction when the rotating member 220 rotates. Specifically, the inner wall of the fixed seat 210 is further provided with a plurality of steps, each of which corresponds to one of the bearings 500. When the rotating member 220 is accommodated in the accommodation cavity 211, the relative position of the rotating member 220 and the fixed seat 210 is determined. In addition, the plurality of bearings 500 can provide a force in the radial direction of the rotating portion 222, so that the rotating member 220 is not prone to shaking when rotating, and the running stability is improved.

[0051] With reference to Figures 1 to 6The second aspect embodiment of the application provides a fan, which comprises a fan blade 600, a support assembly 700, and the head provided in the first aspect embodiment. The fixing base 210 is connected to the support assembly 700, and the fan blade 600 is connected to the first driving assembly 110. The fan has at least all the advantages of the head due to the use of the head provided in the first aspect embodiment. The first driving assembly 110 is connected to the first mounting member 120, and the first driving assembly 110 comprises a first driving member 111 capable of driving the fan blade 600 to rotate to realize air outlet. The second mounting member 230 is rotationally connected to the first mounting member 120, the rotating member 220 is connected to the second mounting member 230, and the second driving member 241 is capable of driving the movable member 242 to move to drive the rotating member 220 to rotate around the Z-axis direction relative to the fixing base 210. The first driving member 111 and the second driving member 241 are respectively connected to the first mounting member 120 and the second mounting member 230, and the first mounting member 120 and the second mounting member 230 are rotationally connected. When the head is applied to the fan, the fan can meet the requirements of air outlet, change of air outlet direction around the X-axis, and rotation of air outlet, and the fan has fewer components, the mounting process of the head is simplified, the cost is lower, and therefore the assembly steps of the fan are also reduced.

[0052] In some embodiments, the fan further comprises a battery 800, which is detachably connected to the side of the first mounting member 120 away from the first driving assembly 110. The battery 800 is capable of supplying power to the first driving member 111 and the second driving member 241. One end of the first mounting member 120 along the thickness direction is used to connect the first driving assembly 110, and the other end is used to connect the battery 800. The battery 800 and the first mounting member 120 are detachably connected through a buckle structure, that is, one of the battery 800 and the first mounting member 120 is provided with a clamping groove, and the other is provided with a buckle. Since the first mounting member 120 and the second mounting member 230 are both made of metal, the battery 800 can supply power to the first driving member 111 and the second driving member 241 after being connected to the first mounting member 120, and at the same time, the panel 300 can also be electrically connected with the battery 800 through a wire, which is convenient for outdoor use of the fan.

[0053] The embodiments of the application are described in detail above with reference to the drawings, but the application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the application. In addition, the embodiments of the application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A handpiece characterized by, The utility model relates to a fan blade driving assembly, comprising a first driving assembly and a first mounting member, the first driving assembly comprises a first driving member for driving the fan blade to rotate around the X-axis direction, the first driving member is connected to the first mounting member, a rotating assembly comprising a fixed seat, a rotating member, a second mounting member and a second driving assembly, the second mounting member is connected to the side of the rotating member away from the fixed seat, the second driving assembly comprises a second driving member and a movable member, the fixed seat is provided with a receiving cavity, the rotating member is accommodated in the receiving cavity, the rotating member is provided with a mounting cavity, the second driving assembly is accommodated in the mounting cavity and is connected to the rotating member, the second driving member can drive the movable member to move to drive the rotating member to rotate around the Z-axis direction relative to the fixed seat, wherein the first mounting member is rotatably connected to the second mounting member and can rotate around the Y-axis direction relative to the second mounting member, further comprising a damper, the damper is arranged at the connection between the first mounting member and the second mounting member, the damper can fix the first mounting member and the second mounting member to make the first mounting member and the second mounting member have a set angle around the Y-axis direction, the first mounting member comprises a main body part and a connecting part, the first driving assembly is connected to the main body part, the second mounting member is provided with a mounting hole, the damper is arranged in the mounting hole and is connected to the connecting part, the damper is located at the top end of the rotating member, further comprising a panel, the first driving assembly further comprises a fixed shaft and a mounting seat, the mounting seat is used for sleeving the fan blade, the fixed shaft is arranged in the mounting seat and is arranged in the first driving member, the panel and the first mounting member are respectively located at the two ends of the fixed shaft along the length direction, the panel is connected to the fixed shaft, the inside of the fixed shaft is hollow and forms a first channel, the first channel is used for arranging wires, the wires can extend to the panel and the first mounting member, and the wires are used for connecting the power supply, the rotating member is provided with a mounting part, the mounting part is provided with a mounting cavity and an opening, the opening is communicated with the receiving cavity and the mounting cavity, the movable member is arranged in the opening and is in contact with the inner wall of the fixed seat, the mounting cavity comprises a first cavity section and a second cavity section in communication with each other, the second driving member is arranged in the first cavity section and is in contact with the bottom wall of the first cavity section, the movable member is arranged in the second cavity section, and the opening is communicated with the receiving cavity and the second cavity section, the inner wall of the fixed seat is provided with two limiting parts, the two limiting parts are arranged at intervals along the direction of the rotating member relative to the fixed seat, the mounting part comprises a protruding part, the protruding part is provided with the second cavity section, the protruding part is arranged between the two limiting parts, and the side wall of the protruding part away from the second cavity section can be in contact with the corresponding limiting part to limit the rotation of the rotating member. ​ ​ ​ ​ ​ ​ 2. The handpiece of claim 1, wherein, ​ 3. The handpiece of claim 1, wherein, ​ 4. The handpiece of claim 3, wherein, ​ 5. The handpiece of claim 4, wherein, ​ 6. The handpiece of any one of claims 3 to 5, wherein, The rotating member further comprises a rotating part extending away from the second mounting member, and the bearing is sleeved on the rotating part and abuts against the inner wall of the fixed seat.

7. A fan characterised by The fan, the support assembly, and the head in any one of claims 1-6 are included, the fixed seat is connected to the support assembly, and the fan is connected to the first driving assembly.

8. The fan of claim 7, wherein, The battery is further included, the battery is detachably connected to the side of the first mounting member away from the first driving assembly, and the battery can supply power to the first driving member and the second driving member.

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