Fan

Abstract

The invention discloses a fan, which comprises a motor base, a fan body, a motor cover, a fan cover and a driving part, and the motor base is internally provided with a driving part; the fan head comprises a mesh enclosure structure and fan blades, the mesh enclosure structure comprises a first mesh enclosure and a second mesh enclosure, each fan blade comprises a connecting shaft and fan blades, the fan blades are located in a space formed by the first mesh enclosure and the second mesh enclosure, the connecting shaft is sleeved with the fan blades, and the fan blades are arranged on the connecting shaft. The two ends of the connecting shaft are rotationally supported on the first mesh enclosure and the second mesh enclosure through bearing structures correspondingly, and the connecting shaft is in power connection with the driving part. According to the fan disclosed by the embodiment of the invention, the bearing structures are arranged at the two ends of the connecting shaft, so that the connecting shaft can be rotatably supported on the first mesh enclosure and the second mesh enclosure of the fan head, the axis of the connecting shaft can be self-adjusted, the stability of the fan during operation is improved, the noise generated during operation of the fan is reduced, and the use comfort of a user is improved; the use effect is better, and the application range is wider.

Description

Technical Field

[0001] The invention relates to the field of household electrical appliances, and in particular to a fan. Background Art

[0002] As people's living standards improve, their requirements for the comfort of using household electrical appliances are getting higher and higher. As a necessary electrical appliance in daily life, the comfort of using fans has become an issue that people are paying more and more attention to. In actual use, the existing fans have a problem that the axes of the front clutch, the rear clutch and the connecting shaft do not coincide with each other, because the front clutch and the rear clutch of the fan are hard-connected when engaged, which in turn affects the stability of the fan operation, makes the fan generate noise during operation, and reduces the user's comfort. There is room for improvement. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a fan that can improve the stability of fan operation, reduce the noise generated by operation, and thus improve the user's comfort.

[0004] A fan according to an embodiment of the present invention includes: a motor base, in which a driving member is arranged; a fan head, wherein the fan head includes a mesh cover structure and fan blades, the mesh cover structure includes a first mesh cover and a second mesh cover, the fan blades include a connecting shaft and fan blades, the fan blades are located in a space formed by the first mesh cover and the second mesh cover, and the fan blades are sleeved outside the connecting shaft, the two ends of the connecting shaft are rotatably supported on the first mesh cover and the second mesh cover respectively by bearing structures, and the connecting shaft is dynamically connected to the driving member.

[0005] According to the fan of the embodiment of the present invention, bearing structures are arranged at both ends of the connecting shaft so that the connecting shaft can be rotatably supported on the first mesh cover and the second mesh cover of the fan head, so that the axis of the connecting shaft can be self-adjusted, thereby improving the stability of the fan during operation, reducing the noise generated by the fan during operation, and thus improving the user's comfort, achieving better use effect and a wider range of applications.

[0006] According to the fan of some embodiments of the present invention, the first mesh cover is detachably connected to the second mesh cover, the front end of the connecting shaft is rotatably supported on the first mesh cover via a first bearing, and the rear end of the connecting shaft is rotatably supported on the second mesh cover via a second bearing.

[0007] According to some embodiments of the fan of the present invention, the first mesh cover is provided with a first connecting hole, the first bearing is installed at the first connecting hole, and the first mesh cover and the first bearing are axially limited and fixed; and / or, the second mesh cover is provided with a second connecting hole, the second bearing is installed at the second connecting hole, and the second mesh cover and the second bearing are axially limited and fixed.

[0008] In the fan according to some embodiments of the present invention, one of the outer circumferential wall of the first bearing and the inner circumferential wall of the first connecting hole is provided with a first limiting protrusion and the other is provided with a first limiting groove, and the first limiting protrusion and the first limiting groove are plug-fitted in the radial direction of the first bearing; and / or, one of the outer circumferential wall of the second bearing and the inner circumferential wall of the second connecting hole is provided with a second limiting protrusion and the other is provided with a second limiting groove, and the second limiting protrusion and the second limiting groove are plug-fitted in the radial direction of the second bearing.

[0009] According to the fan of some embodiments of the present invention, the first connection hole penetrates along the axial direction of the first mesh cover, and the first mesh cover is provided with a decorative plate, and the decorative plate covers the open end of the first connection hole.

[0010] According to some embodiments of the fan of the present invention, the first bearing and the second bearing are both constructed to include an outer support ring and an inner support body, the outer support ring is connected to the corresponding first mesh cover or the second mesh cover, the inner support body is rotatably installed in the outer support ring, and the connecting shaft passes through the inner support body.

[0011] According to some embodiments of the fan of the present invention, the connecting shaft includes a main body section and a front shaft section and a rear shaft section respectively connected to both ends of the main body section, the outer diameter of the front shaft section is smaller than the outer diameter of the main body section, and the outer diameter of the rear shaft section is smaller than or equal to the outer diameter of the main body section; wherein the first bearing is sleeved outside the front shaft section, the second bearing and the fan blades are both sleeved outside the main body section, and the rear shaft section is dynamically connected to the driving member.

[0012] According to some embodiments of the fan of the present invention, a buffer structure is provided at the connection between the bearing structure and the mesh structure;

[0013] Wherein, the bearing structure is detachably mounted on the mesh cover structure, and the buffer structure is constructed as a buffer pad, and the buffer pad is sandwiched between the bearing structure and the mesh cover structure.

[0014] The fan according to some embodiments of the present invention further comprises: a pre-tightening structure, the pre-tightening structure being connected to the connecting shaft and used for axially limiting the connecting shaft;

[0015] Wherein, the preload structure is constructed as an elastic bearing component, the elastic bearing component comprises a bearing portion and an elastic portion connected to each other, the bearing portion is relatively fixed in the fan head along the axial direction, the connecting shaft is rotatably supported in the fan head through the bearing portion, and the elastic portion applies the elastic force toward the connecting shaft;

[0016] Alternatively, the pre-tightening structure is constructed as a sleeve, the sleeve is relatively fixedly installed in the fan head along the axial direction, and the sleeve is sleeved outside the connecting shaft and relatively fixed with the connecting shaft along the axial direction.

[0017] According to the fans of some embodiments of the present invention, the connecting shaft is provided with a first coupling member, the output end of the driving member is provided with a second coupling member, and the driving member and the connecting shaft are suitable for being connected by power coupling with the second coupling member via the first coupling member.

[0018] In the fan according to some embodiments of the present invention, the first coupling member and the second coupling member are configured to be screwed together along the circumference of the motor base.

[0019] According to some embodiments of the fan of the present invention, the motor base is provided with a child lock component and a micro switch, the micro switch is used to control the power state of the driving member, and the child lock component can be movably mounted on the motor base and is used to trigger the micro switch.

[0020] According to some embodiments of the fan of the present invention, the child lock component includes a connected sliding paddle and a switch pressure plate, the sliding paddle is located outside the motor base, the switch pressure plate and the micro switch are both arranged inside the motor base, the micro switch is provided with a trigger spring, and the switch pressure plate is suitable for pressing against the trigger spring.

[0021] According to some embodiments of the fan of the present invention, the motor base is provided with a locking pin, the locking pin is movable along the radial direction of the motor base, the fan head is provided with a locking portion, and the locking pin is configured to lock and cooperate with the locking portion when the motor base is connected to the fan head.

[0022] In the fan according to some embodiments of the present invention, the motor base and the fan head are detachably connected.

[0023] The fan according to some embodiments of the present invention further includes a base, wherein the base is suitable for being supported on a placement surface, and the motor base is mounted on the base.

[0024] In the fan according to some embodiments of the present invention, the fan head as a whole is independently detachable relative to the motor base.

[0025] According to the fan of some embodiments of the present invention, the fan head is provided with an air outlet, and the fan blade is configured as an axial flow fan blade, and the axial flow fan blade is suitable for driving the airflow in the fan head to flow toward the air outlet along the axial direction of the axial flow fan blade;

[0026] And / or, the radial dimension of the fan head is greater than or equal to twice the radial dimension of the motor base at the position of the driving member, and / or, the ratio of the radial dimension to the axial dimension of the fan head is greater than or equal to 1.

[0027] According to the fan of some embodiments of the present invention, the fan head is adapted to be connected to the motor base along a first direction in an initial position, and the first direction intersects with a vertical direction;

[0028] Furthermore, the fan head is configured to be able to swing up and down and / or left and right relative to the motor base from the initial position.

[0029] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0031] Figure 1 is a cross-sectional view of a fan head according to an embodiment of the present invention Figure 1 ;

[0032] Figure 2 is an exploded view of a fan head according to an embodiment of the present invention;

[0033] Figure 3 The explosion of the base and the motor base according to the embodiment of the present invention Figure 1 ;

[0034] Figure 4 The explosion of the base and the motor base according to the embodiment of the present invention Figure 2 ;

[0035] Figure 5 is a schematic structural diagram of a fan according to an embodiment of the present invention;

[0036] Figure 6 is a cross-sectional view of a fan head according to an embodiment of the present invention Figure 2 ;

[0037] Figure 7 is a cross-sectional view of a fan according to an embodiment of the present invention;

[0038] Figure 8 Schematic diagram of the structure of an elastic bearing component according to an embodiment of the present invention.

[0039] Reference numerals:

[0040] Fan 100,

[0041] Base 1, motor base 2, second coupling member 21, locking screw 22, screw cover 23, micro switch 24, sliding paddle 25, switch pressure plate 26, locking latch 27,

[0042] The fan head 3, the first mesh cover 31, the first connecting hole 311, the first limiting protrusion 312, the second mesh cover 32, the second connecting hole 321, the second limiting protrusion 322, the connecting shaft 33, the main body section 331, the front shaft section 332, the rear shaft section 333, the first bearing 34, the first limiting groove 341, the second bearing 35, the second limiting groove 351, the fan blade 36, the decorative plate 37, the outer support ring 381, the inner support body 382, ​​the first coupling member 39, the gasket 41, the fan blade rope nut 42, the buffer pad 43, the elastic bearing component 44, the bearing part 441, and the elastic part 442. DETAILED DESCRIPTION

[0043] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0044] In the description of the present invention, it should be understood that 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" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0045] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Reference below Figure 1-Figure 5 The fan 100 according to the embodiment of the present invention can improve the operating stability of the fan 100 and reduce the noise generated during operation, thereby improving the user's comfort.

[0047] like Figure 1-Figure 5As shown, a fan 100 according to an embodiment of the present invention includes: a motor base 2 and a fan head 3 .

[0048] A driving member is provided in the motor base 2, and the fan head 3 includes a mesh cover structure and fan blades. The mesh cover structure includes a first mesh cover 31 and a second mesh cover 32, and the fan blades include a connecting shaft 33 and a fan blade 36. The fan blade 36 is located in the space formed by the first mesh cover 31 and the second mesh cover 32, and the fan blade 36 is sleeved outside the connecting shaft 33. The two ends of the connecting shaft 33 are rotatably supported on the first mesh cover 31 and the second mesh cover 32 respectively through a bearing structure, and the connecting shaft 33 is dynamically connected to the driving member.

[0049] Among them, the motor seat 2 is installed on the base 1, and is installed at the upper end of the base 1, so that the installation of the motor seat 2 and the base 1 can be realized, and the fan head 3 is installed on the motor seat 2, so that the installation of the fan head 3 and the motor seat 2 can be completed, and then the connection and fixation between the base 1, the motor seat 2 and the fan 100 can be realized. In this embodiment, the lower end of the base 1 is set to be a disc shape, and its radius is larger, so that the fan 100 is more stable when in use, and is not prone to shaking, tipping, etc.

[0050] Specifically, the fan 100 is provided with a motor base 2, which can be set to a cylindrical shape, wherein a driving member is provided in the motor base 2, and the driving member can be set to a driving motor. The driving member is arranged on one side of the motor base 2 and can be used to output power to the outside. The fan 100 is also provided with a fan head 3, which is detachably connected to the motor base 2, so that the fan head 3 can be removed for cleaning to ensure that the fan 100 blows out clean air.

[0051] The fan head 3 is provided with a mesh cover structure, and the fan head 3 is detachably connected to the motor base 2 through the mesh cover structure, and the fan head 3 is also provided with a fan blade, which is arranged in the space formed by the mesh cover structure, and the fan blade can be rotated by the power output by the driving member, thereby generating a wind flow, and the fan blade is provided with a connecting shaft 33 and a fan blade 36, and the mesh cover structure is provided with a first mesh cover 31 and a second mesh cover 32, and the fan blade 36 is arranged in the space formed by the first mesh cover 31 and the second mesh cover 32, and the fan blade 36 is sleeved outside the connecting shaft 33, and the fan blade 36 is fixedly connected to the connecting shaft 33 in the circumferential direction, and one end of the connecting shaft 33 is connected to the driving member. The fan 100 is connected to the connecting shaft 33, and the other end is provided with a fan blade rope nut 42. The power output by the driving member can act on the connecting shaft 33, and the connecting shaft 33 rotates, thereby driving the fan blade 36 to rotate. Two bearing structures are also installed in the mesh cover structure, and the two bearing structures are respectively sleeved on both ends of the connecting shaft 33 to provide support for the connecting shaft 33, so that the connecting shaft 33 can be rotatably supported on the first mesh cover 31 and the second mesh cover 32 through the two bearing structures, so that the axis of the connecting shaft 33 can be self-adjusted, which can reduce the vibration generated by the connecting shaft 33 when transmitting power, and improve the smoothness of the operation of the fan 100.

[0052] Furthermore, the base 1 is located at the bottom, the motor base 2 is located at the upper end of the base 1, and the fan head 3 is located at the output end of the driving member of the motor base 2. When the fan 100 is operating, the driving member outputs power to the connecting shaft 33, and the connecting shaft 33 rotates to drive the fan blades 36 to rotate, thereby generating wind flow. During the power transmission process, the bearing structures at both ends of the connecting shaft 33 can provide support force for the connecting shaft 33. At the same time, when the driving member outputs, the bearing structures at both ends of the connecting shaft 33 can adjust the axis of the connecting shaft 33, so that the power output by the driving member can be smoothly transmitted to the connecting shaft 33, thereby making the fan 100 run more smoothly, and the fan head 3 is detachably connected to the mesh cover structure, so that the installation and disassembly of the fan head 3 are easier and more convenient.

[0053] According to the fan 100 of the embodiment of the present invention, bearing structures are arranged at both ends of the connecting shaft 33, so that the connecting shaft 33 can be rotatably supported on the first mesh cover 31 and the second mesh cover 32 of the fan head 3, so that the axis of the connecting shaft 33 can be self-adjusted, thereby improving the stability of the fan 100 during operation, reducing the noise generated by the fan 100 during operation, and thus improving the user's comfort, achieving better use effect and a wider range of applications.

[0054] In some embodiments, the first mesh cover 31 is detachably connected to the second mesh cover 32 , the front end of the connecting shaft 33 is rotatably supported on the first mesh cover 31 via a first bearing 34 , and the rear end of the connecting shaft 33 is rotatably supported on the second mesh cover 32 via a second bearing 35 .

[0055] Specifically, Figure 1-Figure 2 As shown, the mesh cover structure is provided with a first mesh cover 31 and a second mesh cover 32, the first mesh cover 31 and the second mesh cover 32 are respectively installed at both ends of the fan head 3, the second mesh cover 32 is installed on the side of the fan head 3 close to the motor base 2, the first mesh cover 31 is installed on the side of the fan head 3 away from the motor base 2, and the first mesh cover 31 is detachably connected to the second mesh cover 32, and the fan blade and the connecting shaft 33 are installed in the space formed by the first mesh cover 31 and the second mesh cover 32, one end of the connecting shaft 33 is provided with a first bearing 34, and the other end of the connecting shaft 33 is provided with a second bearing 35, the first bearing 34 is provided at the end of the connecting shaft 33 away from the driving member, that is, the first bearing 34 is provided on the first mesh cover 31, and the second bearing 35 is provided at the end of the connecting shaft 33 close to the driving member, that is, the second bearing 35 is provided on the second mesh cover 32, so that the front end of the connecting shaft 33 is rotatably supported on the first mesh cover 31 through the first bearing 34, and the rear end of the connecting shaft 33 is rotatably supported on the second mesh cover 32 through the second bearing 35.

[0056] It should be noted that the first mesh cover 31 is constructed as a flat disc structure, and the second mesh cover 32 is constructed as an arc-shaped bowl-shaped structure, so that a movable space for the fan blades to rotate is formed therein, and the edge of the second mesh cover 32 is a mesh structure formed by multiple metal wires, which can ensure that the airflow generated when the fan blades rotate is directed to the air outlet formed by the first mesh cover 31 as much as possible, thereby improving the efficiency of the fan 100, and the first mesh cover 31 and the second mesh cover 32 are provided to avoid personal injury and short circuit caused by interference from the human body or other objects, that is, the first mesh cover 31 and the second mesh cover 32 can prevent foreign objects from touching the internal structure of the fan 100.

[0057] In some embodiments, the first mesh cover 31 is provided with a first connecting hole 311, the first bearing 34 is installed at the first connecting hole 311, and the first mesh cover 31 and the first bearing 34 are fixed along the axial limit; and / or, the second mesh cover 32 is provided with a second connecting hole 321, the second bearing 35 is installed at the second connecting hole 321, and the second mesh cover 32 and the second bearing 35 are fixed along the axial limit, that is, the first mesh cover 31 is provided with a first connecting hole 311, the first bearing 34 is installed at the first connecting hole 311, and the first mesh cover 31 and the first bearing 34 are fixed along the axial limit Fixed, at the same time, the second mesh cover 32 is provided with a second connecting hole 321, the second bearing 35 is installed at the second connecting hole 321, and the second mesh cover 32 and the second bearing 35 are fixed along the axial limit, or only the first mesh cover 31 is provided with a first connecting hole 311, the first bearing 34 is installed at the first connecting hole 311, and the first mesh cover 31 and the first bearing 34 are fixed along the axial limit, or only the second mesh cover 32 is provided with a second connecting hole 321, the second bearing 35 is installed at the second connecting hole 321, and the second mesh cover 32 and the second bearing 35 are fixed along the axial limit.

[0058] Specifically, in this embodiment, if Figure 1 As shown, the first mesh cover 31 is provided with a first connecting hole 311, and the radial size of the first connecting hole 311 matches the radial size of the first bearing 34, so that the first bearing 34 is installed at the first connecting hole 311, and the first mesh cover 31 and the first bearing 34 are axially limited and fixed, thereby limiting the axial movement of the first bearing 34 relative to the first mesh cover 31. At the same time, the second mesh cover 32 is provided with a second connecting hole 321, and the radial size of the second connecting hole 321 matches the radial size of the second bearing 35. The second bearing 35 is installed at the second connecting hole 321, and the second mesh cover 32 and the second bearing 35 are axially limited and fixed, thereby limiting the axial movement of the second bearing 35 relative to the second mesh cover 32, so that the first bearing 34 and the second bearing 35 are fixed to the housing, so that the connecting shaft 33 can be rotatably supported on the housing through the first bearing 34 and the second bearing 35, and its own axial position can be adjusted to ensure transmission stability.

[0059] In some embodiments, one of the outer circumferential wall of the first bearing 34 and the inner circumferential wall of the first connecting hole 311 is provided with a first limiting protrusion 312 and the other is provided with a first limiting groove 341, and the first limiting protrusion 312 and the first limiting groove 341 are plug-fitted in the radial direction of the first bearing 34; and / or, one of the outer circumferential wall of the second bearing 35 and the inner circumferential wall of the second connecting hole 321 is provided with a second limiting protrusion 322 and the other is provided with a second limiting groove 351, and the second limiting protrusion 322 and the second limiting groove 351 are plug-fitted in the radial direction of the second bearing 35.

[0060] Specifically, one of the outer circumferential wall of the first bearing 34 and the inner circumferential wall of the first connecting hole 311 is provided with a first limiting protrusion 312 and the other is provided with a first limiting groove 341, and the first limiting protrusion 312 and the first limiting groove 341 are plugged together along the radial direction of the first bearing 34. At the same time, one of the outer circumferential wall of the second bearing 35 and the inner circumferential wall of the second connecting hole 321 is provided with a second limiting protrusion 322 and the other is provided with a second limiting groove 351, and the second limiting protrusion 322 and the second limiting groove 351 are plugged together along the radial direction of the second bearing 35. The first bearing 34 and the second connecting hole 321 are connected together, or only one of the outer circumferential wall of the first bearing 34 and the inner circumferential wall of the first connecting hole 311 is provided with a first limiting protrusion 312 and the other is provided with a first limiting groove 341, and the first limiting protrusion 312 and the first limiting groove 341 are plug-fitted in the radial direction of the first bearing 34, or only one of the outer circumferential wall of the second bearing 35 and the inner circumferential wall of the second connecting hole 321 is provided with a second limiting protrusion 322 and the other is provided with a second limiting groove 351, and the second limiting protrusion 322 and the second limiting groove 351 are plug-fitted in the radial direction of the second bearing 35.

[0061] Furthermore, in this embodiment, if Figure 1 As shown, one of the outer peripheral wall of the first bearing 34 and the inner peripheral wall of the first connecting hole 311 is provided with a first limiting protrusion 312 and the other is provided with a first limiting groove 341, that is, the first limiting protrusion 312 can be set on the outer peripheral wall of the first bearing 34, and can also be set on the inner peripheral wall of the first connecting hole 311, and the first limiting groove 341 can be set on the outer peripheral wall of the first bearing 34, and can also be set on the inner peripheral wall of the first connecting hole 311. When the first limiting protrusion 312 is set on the outer peripheral wall of the first bearing 34, the first limiting groove 341 It is arranged on the inner circumferential wall of the first connecting hole 311; conversely, when the first limiting protrusion 312 is arranged on the inner circumferential wall of the first connecting hole 311, the first limiting groove 341 is arranged on the outer circumferential wall of the first bearing 34. In this embodiment, the first limiting protrusion 312 is arranged on the inner circumferential wall of the first connecting hole 311, and the first limiting groove 341 is arranged on the outer circumferential wall of the first bearing 34. The first limiting protrusion 312 and the first limiting groove 341 are plugged in and matched along the radial direction of the first bearing 34, so that the first mesh cover 31 and the first bearing 34 are axially limited and fixed.

[0062] At the same time, if Figure 1 As shown, one of the outer circumferential wall of the second bearing 35 and the inner circumferential wall of the second connecting hole 321 is provided with a second limiting protrusion 322 and the other is provided with a second limiting groove 351, that is, the second limiting protrusion 322 can be arranged on the outer circumferential wall of the second bearing 35, and can also be arranged on the inner circumferential wall of the second connecting hole 321, and the second limiting groove 351 can be arranged on the outer circumferential wall of the second bearing 35, and can also be arranged on the inner circumferential wall of the second connecting hole 321. When the second limiting protrusion 322 is arranged on the outer circumferential wall of the second bearing 35, the second limiting groove 351 It is arranged on the inner circumferential wall of the second connecting hole 321; conversely, when the second limiting protrusion 322 is arranged on the inner circumferential wall of the second connecting hole 321, the second limiting groove 351 is arranged on the outer circumferential wall of the second bearing 35. In this embodiment, the second limiting protrusion 322 is arranged on the inner circumferential wall of the second connecting hole 321, and the second limiting groove 351 is arranged on the outer circumferential wall of the second bearing 35. The second limiting protrusion 322 and the second limiting groove 351 are plugged in and matched along the radial direction of the second bearing 35, so that the second mesh cover 32 and the second bearing 35 are axially limited and fixed.

[0063] In some embodiments, the first connection hole 311 penetrates the first mesh cover 31 along the axial direction, and the first mesh cover 31 is provided with a decorative plate 37 , and the decorative plate 37 covers the open end of the first connection hole 311 .

[0064] Specifically, Figure 1 As shown, the first connecting hole 311 penetrates the first mesh cover 31 axially along the fan head 3, and the end of the first connecting hole 311 close to the motor base 2 cooperates with the first bearing 34 to support the connecting shaft 33. The end of the first connecting hole 311 away from the motor base 2 is connected to the outside, and a decorative plate 37 is provided on the side of the first mesh cover 31 away from the second mesh cover 32. The decorative plate 37 is detachable relative to the first mesh cover 31, and the decorative plate 37 blocks the open end of the first connecting hole 311, so that the fan head 3 is more convenient to disassemble, and the first connecting hole 311 can be protected to improve the safety of use. At the same time, the internal structure is not visible on the front side of the fan 100, so that the overall structure of the fan 100 is regular, ensuring the visual comfort of the user.

[0065] In some embodiments, the first bearing 34 and the second bearing 35 are both constructed to include an outer support ring 381 and an inner support body 382 , that is, the first bearing 34 is provided with an outer support ring 381 and an inner support body 382 , and the second bearing 35 is provided with an outer support ring 381 and an inner support body 382 .

[0066] Specifically, Figure 1As shown, the outer support ring 381 is connected to the corresponding first mesh cover 31 or the second mesh cover 32, that is, the outer peripheral wall of the outer support ring 381 is connected to the inner peripheral wall of the first connecting hole 311 of the first mesh cover 31 or the inner peripheral wall of the second connecting hole 321 of the second mesh cover 32, and the inner support body 382 is rotatably installed in the outer support ring 381, that is, the inner peripheral wall of the outer support ring 381 is connected to the outer peripheral wall of the inner support body 382, ​​and the connecting shaft 33 is passed through the inner support body 382, ​​and a connecting hole is provided in the inner support body 382, ​​and the size of the connecting hole matches the connecting shaft 33, so that the connecting shaft 33 can be supported on the inner support body 382, ​​and the inner support body 382 is rotatably installed in the outer support ring 381, that is, the connecting shaft 33 is rotatably installed in the outer support ring 381, so that the connecting shaft 33 can rotate relative to the shell, thereby transmitting power to the fan blade 36 through the connecting shaft 33.

[0067] In some embodiments, Figure 1 As shown, the connecting shaft 33 includes a main body section 331 and a front shaft section 332 and a rear shaft section 333 respectively connected to the two ends of the main body section 331, the outer diameter of the front shaft section 332 is smaller than the outer diameter of the main body section 331, the outer diameter of the rear shaft section 333 is less than or equal to the outer diameter of the main body section 331, the connecting shaft 33 is provided with a front shaft section 332, the front shaft section 332 is arranged at the end of the connecting shaft 33 away from the motor base 2, the connecting shaft 33 is provided with a rear shaft section 333, the rear shaft section 333 is arranged at the end of the connecting shaft 33 close to the motor base 2, the main body section 331 is arranged between the front shaft section 332 and the rear shaft section 333, the outer diameter of the front shaft section 332 is smaller than the outer diameter of the main body section 331, the outer diameter of the rear shaft section 333 is less than or equal to the outer diameter of the main body section 331.

[0068] Among them, the first bearing 34 is sleeved on the outside of the front shaft section 332, the second bearing 35 and the fan blade 36 are both sleeved on the outside of the main body section 331, the rear shaft section 333 is dynamically connected to the driving member, the first bearing 34 is sleeved on the outside of the front shaft section 332, the radial size of the connecting hole of the inner support body 382 of the first bearing 34 matches the radial size of the front shaft section 332, and the outer diameter of the front shaft section 332 is smaller than the outer diameter of the main body section 331, thereby limiting the axial displacement of the connecting shaft 33, the fan blade 36 is sleeved on the outside of the main body section 331, and the fan 100 can generate wind flow by rotating the fan blade 36 when running. At the same time, the fan blade 36 will be subjected to the reaction force generated by the wind flow, and the force will be transmitted to the connecting shaft 33 along the fan blade 36. The outer diameter size set for the main body section 331 is relatively large, which can improve the structural strength of the main body section 331 and avoid bending of the connecting shaft 33 due to excessive force.

[0069] In some embodiments, a buffer structure is provided at the connection between the bearing structure and the mesh structure.

[0070] Specifically, the mesh cover structure is also equipped with a bearing structure, which can provide support for the connecting shaft 33, so that the connecting shaft 33 can be rotatably supported on the mesh cover structure through the bearing structure. At the same time, a buffer structure is provided at the connection between the bearing structure and the mesh cover structure, which can reduce the vibration generated by the connecting shaft 33 when transmitting power and improve the smoothness of the operation of the fan 100. During the power transmission process, the bearing structure can provide support for the connecting shaft 33. At the same time, when the fan blades 36 rotate, a force is generated on the bearing structure. The force can be transmitted to the buffer structure through the bearing structure, thereby weakening the effect of the force on the fan head 3, making the fan 100 run more smoothly.

[0071] The bearing structure is detachably mounted on the mesh structure, and the buffer structure is constructed as a buffer pad 43, which is sandwiched between the bearing structure and the mesh structure.

[0072] Further, such as Figure 6 As shown, the bearing structure is arranged between the mesh cover structure and the connecting shaft 33, and can be used to provide support force for the connecting shaft 33. The bearing structure needs to be regularly maintained when in use. The bearing structure can be detachably installed on the mesh cover structure to save maintenance time. When the bearing structure is damaged, only the bearing structure can be replaced, saving costs.

[0073] At the same time, when the fan 100 is running, the fan blades 36 will generate a force on the connecting shaft 33 connected thereto when they rotate, and then the force will be transmitted to the bearing structure through the connecting shaft 33. The bearing structure is set as an independent component, so that the conduction path of the force is increased during transmission, thereby weakening the effect of the force, and a buffer structure is set between the bearing structure and the shell. The buffer structure can be set as a buffer pad 43. When the force is transmitted to the shell through the bearing structure, it can be buffered by the buffer pad 43, thereby further weakening the effect of the force and improving the smoothness of the operation of the fan 100.

[0074] In some embodiments, the fan 100 further includes a pre-tightening structure.

[0075] Specifically, Figure 7 As shown, the pre-tightening structure is connected to the connecting shaft 33 and is used to axially limit the connecting shaft 33. The pre-tightening structure is connected to the connecting shaft 33 and is used to axially limit the connecting shaft 33. The pre-tightening structure can be connected to the end of the connecting shaft 33 to control the axial clearance of the connecting shaft 33, so that the connecting shaft 33 has a dynamic clearance control function when rotating, and the connecting shaft 33 has a suitable clearance along the axial direction to avoid axial movement when the fan 100 rotates inside, which affects the stability of the operation of the fan 100.

[0076] Therefore, by setting a pre-tightening structure at the output end of the connecting shaft 33, the axial clearance of the connecting shaft 33 can be controlled, which is conducive to the smooth rotation of the output end of the connecting shaft 33, and then the smooth rotation of the fan blades, and the vibration and friction of the connecting shaft 33 along the axial direction can be avoided, thereby achieving the effect of noise reduction, making the power transmission between the drive member and the connecting shaft 33 more efficient, enhancing the use function of the fan 100, and improving the service life of the product and the user's experience. It has a simple structure and strong applicability.

[0077] Among them, the pre-tightening structure is constructed as an elastic bearing component 44, which includes a connected bearing portion 441 and an elastic portion 442. The bearing portion 441 is relatively fixed axially in the fan head 3, and the connecting shaft 33 is rotatably supported in the fan head 3 through the bearing portion 441, and the elastic portion 442 applies an elastic force toward the connecting shaft 33.

[0078] Further, such as Figure 8 As shown, the elastic bearing component 44 includes two parts, one part is the bearing part 441, and the other part is the elastic part 442. The bearing part 441 and the elastic part 442 are connected to form the elastic bearing component 44, wherein the bearing part 441 and the fan head 3 are relatively fixed along the axis, so that the bearing part 441 can be fixed, and the elastic bearing component 44 can be fixed. wherein the elastic bearing component 44 is constructed in a circular ring shape, and the elastic bearing component 44 is coaxially connected to the connecting shaft 33, so that the connecting shaft 33 can be rotatably supported inside the fan head 3, so that the connection of the connecting shaft 33 can be realized, and the connecting shaft 33 can be rotated relative to the fan head 3, and the elastic part 442 can apply an elastic force toward the connecting shaft 33 to adjust the axial clearance of the connecting shaft 33.

[0079] When the axial clearance of the connecting shaft 33 is too large, the elastic portion 442 of the pre-tightening structure will release and absorb the excess clearance to apply an elastic force to the connecting shaft 33 toward the driving member, thereby reducing the axial clearance of the connecting shaft 33; when the axial clearance of the connecting shaft 33 is small, the elastic portion 442 of the pre-tightening structure will be compressed by the connecting shaft 33, thereby releasing a certain axial clearance for the connecting shaft 33, thereby increasing the axial clearance of the connecting shaft 33, and preventing the axial clearance from being too small, resulting in the connecting shaft 33 rotating less smoothly. In this way, the axial clearance of the connecting shaft 33 can be comprehensively adjusted through the elastic portion 442 to ensure that the axial clearance of the connecting shaft 33 is more stable.

[0080] Therefore, by making the above-mentioned settings on the elastic bearing component 44, the connection between the elastic bearing component 44 and the connecting shaft 33 and the axial clearance of the connecting shaft 33 can be adjusted at the same time, and the axial clearance of the connecting shaft 33 can be dynamically controlled, so that the connecting shaft 33 can have a suitable clearance along the axial direction, thereby improving the stability of the operation of the fan 100.

[0081] Or the pre-tightening structure is constructed as a sleeve, which is relatively fixedly installed in the fan head 3 along the axial direction, and the sleeve is sleeved outside the connecting shaft 33 and relatively fixedly installed with the connecting shaft 33 along the axial direction.

[0082] Furthermore, the pre-tightening structure can be constructed as a sleeve, which is axially installed inside the fan head 3, and the sleeve is installed at the end near the output end of the connecting shaft 33. In actual design, the sleeve can be constructed as a circular ring, and the sleeve is sleeved outside the connecting shaft 33, and the two ends of the sleeve are axially limited and fixed to achieve installation and fixation of the sleeve. Among them, the sleeve can have two forms, one can be constructed as rigid, and during the operation of the connecting shaft 33, the axial clearance of the connecting shaft 33 can be guaranteed to be a fixed value and meet the axial clearance requirements of the connecting shaft 33. The other can be constructed as elastic, which can make the sleeve compressible. During the operation of the connecting shaft 33, the axial clearance of the connecting shaft 33 can be controlled within a certain range, thereby realizing dynamic control of the axial clearance of the connecting shaft 33 to meet the axial clearance of the connecting shaft 33.

[0083] Therefore, the pre-tightening structure is set as a sleeve, which has a simple structure and low manufacturing cost. At the same time, the material of the sleeve can be selected from two options: rigidity and elasticity, so that the pre-tightening structure is flexible and optional, and the axial clearance of the connecting shaft 33 can meet the requirements to ensure smooth operation of the connecting shaft 33.

[0084] In some embodiments, the connecting shaft 33 is provided with a first coupling member 39 , and the output end of the driving member is provided with a second coupling member 21 . The driving member and the connecting shaft 33 are adapted to be connected to each other through power coupling between the first coupling member 39 and the second coupling member 21 .

[0085] Specifically, Figure 1-Figure 4As shown, the fan 100 is provided with a motor base 2, and the motor base 2 is used to install a driving member, and the driving member can output power outward. The output end of the driving member is provided with a second coupling member 21, and the second coupling member 21 is connected to the driving member through a locking screw 22, and the locking screw 22 is closed by a screw cover plate 23 on the side close to the fan head 3, so that the second coupling member 21 can be detached and the safety can be improved. A gasket 41 is also provided at the locking screw 22 to increase the force-bearing area and ensure the connection reliability. The fan 100 is also provided with a fan head 3, and a fan blade is installed in the fan head 3. The fan blade is rotatably installed in the outer shell of the fan head 3, and the fan blade is provided with The fan blade 36 and the connecting shaft 33, the fan head 3 is provided with a first coupling member 39, the first coupling member 39 is arranged on the side of the fan head 3 close to the motor base 2, and the side of the first coupling member 39 close to the fan head 3 is connected to the fan blade arranged inside the fan head 3, a gasket 41 is arranged between the first coupling member 39 and the connecting shaft to increase the force area and ensure the connection reliability, the second coupling member 21 is connected to the first coupling member 39 with power coupling, the power output by the driving member can be used to rotate the fan blades to generate windflow, the power output by the driving member can be output to the first coupling member 39 through the second coupling member 21, and then transmitted to the fan blades to rotate the fan blades.

[0086] Furthermore, when the fan 100 is running, the driving member in the motor base 2 outputs power, and the output end of the driving member near the fan head 3 is connected to the second coupling member 21. The power output by the driving member can be output through the second coupling member 21, and the second coupling member 21 is power-coupled with the first coupling member 39. The first coupling member 39 is connected to the fan blades, so that the first coupling member 39 can drive the fan blades to rotate, thereby generating wind flow and realizing the normal operation of the fan 100.

[0087] In some embodiments, the first coupling member 39 and the second coupling member 21 are configured to be screwed together along the circumference of the motor base 2 .

[0088] Specifically, when the fan 100 is running, the driving member arranged inside the motor base 2 outputs power, and the power can be output to the first coupling member 39 through the second coupling member 21, thereby causing the fan blades to rotate. The fan blades generate wind flow through the rotation, and while generating wind flow, the wind flow can exert a reaction force on the fan blades, and the force can be transmitted to the second coupling member 21 through the fan blades. The first coupling member 39 and the second coupling member 21 are arranged to rotate along the circumference of the motor base 2. Under this force, the connection between the first coupling member 39 and the second coupling member 21 is tighter, thereby ensuring the reliability of power transmission and improving the stability of the operation of the fan 100.

[0089] In some embodiments, the motor base 2 is provided with a child lock component and a micro switch 24 . The micro switch 24 is used to control the power state of the driving member. The child lock component can be movably mounted on the motor base 2 and is used to trigger the micro switch 24 .

[0090] Specifically, Figure 3 As shown, a child lock component and a micro switch 24 are provided at the upper end of the motor base 2 close to the fan head 3. The child lock component is constructed as a long cover-like structure extending circumferentially along the connection. The child lock component can be movably mounted on the motor base 2 and is used to trigger the micro switch 24. The micro switch 24 can be used to control the power state of the drive component. When the child lock component triggers the micro switch 24, the drive component operates. When the child lock component is away from the micro switch 24, the drive component stops operating. Furthermore, after the fan head 3 is removed, the operation of the drive component can be stopped, thereby improving the safety of use.

[0091] In some embodiments, the child lock component includes a connected sliding paddle 25 and a switch pressure plate 26, the sliding paddle 25 is located outside the motor base 2, the switch pressure plate 26 and the micro switch 24 are both arranged inside the motor base 2, the micro switch 24 is provided with a trigger spring, and the switch pressure plate 26 is suitable for pressing against the trigger spring.

[0092] Specifically, Figure 3 As shown, the child lock component is provided with a sliding paddle 25 and a switch pressure plate 26. The sliding paddle 25 is connected to the switch pressure plate 26, and the sliding paddle 25 is arranged outside the motor base 2 for the convenience of user operation. The switch pressure plate 26 and the micro switch 24 are arranged in the motor base 2, and when the user moves the sliding paddle 25, the switch pressure plate 26 and the micro switch 24 can be operated. The micro switch 24 is provided with a trigger spring, and the switch pressure plate 26 can be pressed against the trigger spring. When the user closes the sliding paddle 25, the micro switch 24 is pressed against the trigger spring, thereby causing the drive member to operate, thereby improving the safety of use.

[0093] In some embodiments, the motor base 2 is provided with a locking pin 27, which is movable along the radial direction of the motor base 2, and the fan head 3 is provided with a locking portion, and the locking pin 27 is configured to lock and cooperate with the locking portion when the motor base 2 is connected to the fan head 3.

[0094] Specifically, Figure 3 As shown, the motor base 2 is provided with a locking pin 27, and the locking pin 27 is movable along the radial direction of the motor base 2, and the fan head 3 is provided with a locking portion, and the locking pin 27 is configured to be locked with the locking portion when the motor base 2 is connected to the fan head 3. When the locking pin 27 is not engaged with the locking portion, the fan head 3 can move relative to the motor base 2. When the locking pin 27 is engaged with the locking portion, it limits the displacement of the fan head 3 relative to the motor base 2, so it plays a role of locking limit, further ensuring the reliability of the connection between the fan head 3 and the motor base 2, avoiding the fan head 3 from being separated from the motor base 2 during use, and improving the safety of use.

[0095] In some embodiments, the motor base 2 and the fan head 3 are detachably connected.

[0096] Specifically, a first connecting portion is provided on the side of the fan head 3 close to the motor base 2, and a second connecting portion is provided on the side of the motor base 2 close to the fan head 3. The first connecting portion and the second connecting portion can be connected by plugging or the like, and after the first connecting portion and the second connecting portion are plugged and connected, the locking pin 27 can be plugged into the locking socket, so that the fan head 3 is fixed relative to the motor base 2, and after the locking pin 27 is removed from the locking socket, the fan head 3 can be separated relative to the motor base 2 to realize the installation and disassembly of the fan head 3 relative to the motor base 2. This method of disassembling the fan head 3 is simple and easy, and it is convenient to disassemble and clean the fan head 3, so that the fan head 3 can be removed for cleaning to ensure that the fan 100 blows out clean air and improves the user experience.

[0097] In some embodiments, the fan 100 further includes a base 1 , which is suitable for being supported on a placement surface, and the motor base 2 is mounted on the base 1 .

[0098] Specifically, Figure 5 As shown, the base 1 is located at the lower part of the fan 100, and the base 1 is relatively high. The motor base 2 is installed at the upper end of the base 1, so that the connection between the motor base 2 and the base 1 can be realized, and the base 1 is used to support the motor base 2 and the fan head 3. When the fan 100 is working or not working, the base 1 is supported on the placement surface, which can make the placement of the fan 100 more stable. The fan 100 can be supported on the placement surface by the base 1, that is, the fan 100 can be placed on the ground. This floor fan is conducive to the overall stable placement of the fan 100, and in actual use, the fan 100 can be set to a desktop type or a wall-mounted type, etc. The rod length set on the base 1 of the fan 100 can be selected according to actual use. When the fan 100 is set to a desktop type, the rod length set on the base 1 can be selected to be shorter. When the fan 100 is set to a wall-mounted type, the base 1 can omit the rod structure.

[0099] In some embodiments, the fan head 3 as a whole is independently removable relative to the motor base 2, so that the fan head 3 can be completely independently removed from the motor base 2. In this way, when the user cleans the fan 100, the fan head 3 can be cleaned independently, which not only helps to improve the cleaning efficiency, but also facilitates the user to increase the cleaning frequency, ensuring that the fan 100 can always blow out fresh and clean wind, thereby improving the user experience.

[0100] Among them, it is also necessary to explain that, in actual design, the fan head 3 and its internal fan blades and other structural parts can be regarded as a whole. At the same time, the motor base 2 and its internal motor and other structural parts can be regarded as a whole. When the fan head 3 and the motor base 2 are disassembled and installed as a whole, the mesh cover structure of the fan head 3 and the shell of the motor base 2 can be directly disassembled or connected. The disassembly structure is simple and the connection relationship is not complicated, which greatly reduces the disassembly time of the fan head 3 relative to the motor base 2. At the same time, after the fan head 3 is disassembled from the motor base 2 as an independent body, the user can clean the fan head 3 as a whole, or disassemble and clean the internal structural parts of the fan head 3 to meet the user's cleaning needs.

[0101] In some embodiments, the fan head 3 is provided with an air outlet, and the fan blade is configured as an axial flow fan blade, which is suitable for driving the airflow in the fan head 3 to flow toward the air outlet along the axial direction of the axial flow fan blade. In other words, the fan blades of the fan 100 in the present invention are different from traditional centrifugal fan blades, and can realize axial air intake and axial air outlet, wherein, during actual operation, the axial flow fan blades rotate, and drive the airflow at the rear side of the axial flow fan blades to flow forward along the axial direction thereof, and then flow to the air outlet at the front of the fan head 3 and transport toward the user's face.

[0102] Among them, it should be noted that the fan head 3 can be provided with an air inlet, and the air inlet can be provided on the rear side of the fan head 3 for axial air inlet, or can be provided on the circumferential outer side of the fan head 3 for oblique air inlet, both of which can realize the air inlet function of the fan head 3, and the airflow entering the fan head 3 can flow to the axial rear end of the axial flow fan blade, and then flow forward axially to the air outlet under the action of the axial flow fan blade. In particular, an air inlet can be provided on the rear side of the fan head 3, and a heat dissipation channel is provided in the motor base 2, so that the heat dissipation channel is connected with the air inlet, and then under the driving action of the axial flow fan blade, the airflow is driven to dissipate the heat for the driving parts in the heat dissipation flow, and then flows from the air inlet to the user, which is not only beneficial to air supply, but also can realize the internal heat dissipation of the motor base 2.

[0103] And the radial dimension of the fan head 3 is greater than or equal to twice the radial dimension of the motor base 2 at the location of the driving member, and / or the ratio of the radial dimension of the fan head 3 to the axial dimension is greater than or equal to 1. Therefore, the fan 100 in the present invention is different from the traditional crossflow fan wheel. It should be noted that the traditional tower fan uses a crossflow fan wheel, and the radial dimension of the tower fan at various positions in the axial direction does not change significantly, while the radial dimension of the fan head 3 in the present invention is much larger than the radial dimension of the motor base 2 at the driving member.

[0104] At the same time, compared with centrifugal fan blades, the provision of axial flow fan blades is conducive to more stable placement of the fan head 3 and the motor base 2, thereby ensuring the stability of the position state of the fan 100.

[0105] In some embodiments, the fan head 3 is adapted to be connected to the motor base 2 along a first direction in the initial position, and the first direction intersects with the vertical direction. That is, when the fan head 3 is in the initial position relative to the motor base 2, the fan head 3 can be moved relative to the motor base 2 along the first direction, so that the fan head 3 is connected and fixed to the motor base 2. If the first direction is along the horizontal direction, the fan head 3 can be installed at the front end of the motor base 2 from front to back along the horizontal direction, so that the two are connected and fixed in the horizontal direction.

[0106] The first direction may also form a certain inclination angle relative to the horizontal direction and intersect with the vertical direction, that is, the first direction may be inclined upward or downward relative to the horizontal direction, so that the installation of the fan head 3 is more flexible.

[0107] The fan head 3 is configured to be able to swing up and down and / or left and right relative to the motor base 2 from an initial position, that is, after the fan head 3 is connected and fixed to the motor base 2, the user can adjust the angle of the fan head 3. If the fan head 3 and the motor base 2 are installed together on the base 1, the fan head 3 can be driven to adjust in different directions such as up, down, left and right relative to the base 1. At this time, the fan head 3 can be adjusted until its axis is parallel to the vertical direction, so that the adjustment range of the fan head 3 is larger, which can meet the user's air supply needs in more directions.

[0108] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0109] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A fan, characterized in that: include: A motor base, wherein a driving member is arranged in the motor base; A fan head, the fan head includes a mesh cover structure and fan blades, the mesh cover structure includes a first mesh cover and a second mesh cover, the fan blades include a connecting shaft and a fan blade, the fan blade is located in a space formed by the first mesh cover and the second mesh cover, and the fan blade is sleeved outside the connecting shaft, both ends of the connecting shaft are rotatably supported on the first mesh cover and the second mesh cover through bearing structures respectively, and the connecting shaft is dynamically connected to the driving member.

2. The fan according to claim 1, characterized in that The first mesh cover is detachably connected to the second mesh cover, the front end of the connecting shaft is rotatably supported on the first mesh cover through a first bearing, and the rear end of the connecting shaft is rotatably supported on the second mesh cover through a second bearing.

3. The fan according to claim 2, characterized in that: The first mesh cover is provided with a first connecting hole, the first bearing is installed at the first connecting hole, and the first mesh cover and the first bearing are fixed in an axial direction; And / or, the second mesh cover is provided with a second connecting hole, the second bearing is installed at the second connecting hole, and the second mesh cover and the second bearing are fixed in an axial direction.

4. The fan according to claim 3, characterized in that: One of the outer peripheral wall of the first bearing and the inner peripheral wall of the first connecting hole is provided with a first limiting protrusion and the other is provided with a first limiting groove, and the first limiting protrusion and the first limiting groove are plug-fitted in the radial direction of the first bearing; And / or, one of the outer circumferential wall of the second bearing and the inner circumferential wall of the second connecting hole is provided with a second limiting protrusion and the other is provided with a second limiting groove, and the second limiting protrusion and the second limiting groove are plug-fitted along the radial direction of the second bearing.

5. The fan according to claim 3, characterized in that: The first connection hole penetrates along the axial direction of the first mesh cover, and the first mesh cover is provided with a decorative plate, and the decorative plate cover is arranged on the open end of the first connection hole.

6. The fan according to claim 2, characterized in that: The first bearing and the second bearing are both constructed to include an outer support ring and an inner support body, the outer support ring is connected to the corresponding first mesh cover or the second mesh cover, the inner support body is rotatably installed in the outer support ring, and the connecting shaft passes through the inner support body.

7. The fan according to claim 2, characterized in that: The connecting shaft comprises a main body section and a front shaft section and a rear shaft section respectively connected to both ends of the main body section, the outer diameter of the front shaft section is smaller than the outer diameter of the main body section, and the outer diameter of the rear shaft section is smaller than or equal to the outer diameter of the main body section; Wherein, the first bearing is sleeved outside the front shaft section, the second bearing and the fan blade are both sleeved outside the main body section, and the rear shaft section is dynamically connected to the driving member.

8. The fan according to claim 1, characterized in that A buffer structure is provided at the connection between the bearing structure and the mesh structure; Wherein, the bearing structure is detachably mounted on the mesh cover structure, and the buffer structure is constructed as a buffer pad, and the buffer pad is sandwiched between the bearing structure and the mesh cover structure.

9. The fan according to claim 1, characterized in that: Also includes: A pre-tightening structure, the pre-tightening structure is connected to the connecting shaft and is used to axially limit the connecting shaft; Wherein, the preload structure is constructed as an elastic bearing component, the elastic bearing component comprises a bearing portion and an elastic portion connected to each other, the bearing portion is relatively fixed in the fan head along the axial direction, the connecting shaft is rotatably supported in the fan head through the bearing portion, and the elastic portion applies the elastic force toward the connecting shaft; Alternatively, the pre-tightening structure is constructed as a sleeve, the sleeve is relatively fixedly installed in the fan head along the axial direction, and the sleeve is sleeved outside the connecting shaft and relatively fixed with the connecting shaft along the axial direction.

10. The fan according to claim 1, characterized in that The connecting shaft is provided with a first coupling member, and the output end of the driving member is provided with a second coupling member. The driving member and the connecting shaft are suitable for being connected to each other by power coupling through the first coupling member and the second coupling member.

11. The fan according to claim 10, characterized in that The first coupling member and the second coupling member are configured to be screwed together along the circumferential direction of the motor base.

12. The fan according to claim 1, characterized in that The motor base is provided with a child lock component and a micro switch, the micro switch is used to control the power state of the driving member, and the child lock component can be movably installed on the motor base and is used to trigger the micro switch.

13. The fan according to claim 12, characterized in that The child lock component includes a connected sliding paddle and a switch pressure plate, the sliding paddle is located outside the motor base, the switch pressure plate and the micro switch are both arranged in the motor base, the micro switch is provided with a trigger spring, and the switch pressure plate is suitable for pressing against the trigger spring.

14. The fan according to claim 1, characterized in that The motor base is provided with a locking pin, which is movable in the radial direction of the motor base. The fan head is provided with a locking portion, and the locking pin is configured to be locked and matched with the locking portion when the motor base is connected to the fan head.

15. The fan according to claim 1, characterized in that The motor base and the fan head are detachably connected.

16. The fan according to claim 1, characterized in that It also includes a base, which is suitable for being supported on a placement surface, and the motor base is installed on the base.

17. The fan according to any one of claims 1 to 16, characterized in that: The fan head as a whole can be independently disassembled relative to the motor base.

18. The fan according to any one of claims 1 to 16, characterized in that: The fan head is provided with an air outlet, and the fan blade is configured as an axial flow fan blade, and the axial flow fan blade is suitable for driving the airflow in the fan head to flow toward the air outlet along the axial direction of the axial flow fan blade; And / or, the radial dimension of the fan head is greater than or equal to twice the radial dimension of the motor base at the position where the driving member is located; and / or, the ratio of the radial dimension to the axial dimension of the fan head is greater than or equal to 1.

19. The fan according to any one of claims 1 to 16, characterized in that: The fan head is adapted to be connected to the motor base along a first direction in an initial position, wherein the first direction intersects with a vertical direction; Furthermore, the fan head is configured to be able to swing up and down and / or left and right relative to the motor base from the initial position.

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