CN221170149U - Rotary blade structure and fan - Google Patents

Abstract

The application relates to a page turning structure and a fan. The blade rotating structure comprises a straight wind part, a plurality of straight wind bars, all the straight wind bars are radially arranged around a rotation central shaft, and each straight wind bar extends linearly along the radial direction of the blade rotating structure; the wind guide part is arranged on the periphery of the straight wind part and is provided with a plurality of wind guide grid bars, all the wind guide grid bars are arranged at intervals around the rotation center shaft, each wind guide grid bar is bent in an arc shape in the same direction, and the bending direction of each wind guide grid bar is the same as the rotation direction of the blades of the fan. When the wind power that blows causes the page turning structure to revolve around the rotation axis, because the straight wind portion is close to the rotation center axle setting, consequently, wind energy that a plurality of straight style bars of it derived can satisfy the user and experience the wind-sensing in the dead ahead of page turning structure, and wind-guiding portion is owing to set up in the periphery of straight wind portion, and the arciform wind-guiding style bars of it can guide wind direction out-diffusion for the user that is located the side front of page turning structure also can experience better wind-sensing.

Description

Rotary blade structure and fan

Technical Field

The application relates to the technical field of fans, in particular to a blade rotating structure and a fan.

Background

With the improvement of the living standard of people, the living modes are various, and in recent years, more people participate in outdoor exercises such as camping and picnic. However, most outdoor weather is hot, and the demand for outdoor fans is increasing, so that comfortable blowing experience and wide blowing range are all important factors affecting user selection.

In the related art, the outdoor fan has a single structure, is of an air duct type or single front net type air outlet structure, has a small air supply range and small air quantity, and therefore, has poor air feel when being used outdoors.

Disclosure of utility model

Accordingly, it is necessary to provide a fan and a fan capable of expanding the air blowing range and increasing the air volume, in order to solve the problems of the outdoor fan in the related art that the air blowing range is small and the air volume is not large.

A page turning structure for a fan, the page turning structure having a rotation center axis, the page turning structure comprising:

The straight wind part is provided with a plurality of straight style bars, all the straight style bars are radially arranged around the rotating central shaft, and each straight style bar linearly extends along the radial direction of the page turning structure; and

The wind guide part is arranged on the periphery of the straight wind part and is provided with a plurality of wind guide grid bars, all the wind guide grid bars are arranged at intervals around the rotation center shaft, each wind guide grid bar is bent in an arc shape in the same direction, and the bending direction of each wind guide grid bar is the same as the rotation direction of the blades of the fan.

In one embodiment, the guide grid bars are obliquely arranged relative to the rotation center axis of the page turning structure.

In one embodiment, the guide grid is inclined at an angle of no more than 60 degrees relative to the axial direction of the turning structure.

In one embodiment, the guide grid is inclined at an angle of 30 degrees relative to the axial direction of the leaf structure.

In one embodiment, the air guiding parts comprise a plurality of air guiding parts, and all the air guiding parts are distributed in sequence along the radial direction of the page turning structure.

Above-mentioned page or leaf structure turns round when the wind-force that fan or other ventilation class products blown causes the page or leaf structure to revolute rotation axis and rotates, because the straight wind portion is close to the rotation center axle setting, consequently, wind energy that a plurality of straight style bars on it derived can satisfy the user and experience the wind sense in the page or leaf structure directly ahead, and the wind-guiding portion is owing to set up in the periphery of straight wind portion, and the arc style bars on it can guide wind direction out-diffusion for the user that is located the side place ahead of page or leaf structure also can experience better wind sense. Therefore, when the page turning structure of the embodiment of the application is applied to fans or other ventilation products, the requirement of wider air supply range can be met, and because the page turning structure is used instead of an air duct type or single front net type air outlet structure, the air quantity is larger.

In another aspect of the present application, there is also provided a fan including:

A back net;

The above-mentioned page turning structure in any embodiment, the page turning structure and the back net are arranged opposite to each other along the rotation center axis; and

The fan blade is positioned between the rear net and the page turning structure;

The blade rotating structure can rotate relative to the rear net under the action of wind power generated by the blades.

In one embodiment, the fan further comprises a rotating seat and an air guiding frame, the outer edge of the air guiding frame is connected with the outer edge of the rear net, the rotating seat is mounted in the middle of the air guiding frame, and the page turning structure is rotatably mounted on the rotating seat.

In one embodiment, the outer edge of the air guide frame is connected with the outer edge of the rear net in a screwing mode.

In one embodiment, the fan further comprises a mesh cover ring, wherein the mesh cover ring is connected to the air guide frame and covers the outer edge of the air guide frame and the outer edge of the rear mesh.

In one embodiment, the mesh enclosure ring is in clamping connection with the outer edge of the air guide frame.

In one embodiment, the fan further comprises a friction cover, the friction cover and the rotating seat are arranged opposite to each other along the rotating central shaft, and the page turning structure is positioned between the friction cover and the rotating seat;

A rotating track is formed between the friction cover and the rotating seat, and the page turning structure is provided with a rotating guide rail matched with the rotating track.

In one embodiment, there is a radial gap and an axial gap between the rotating track and the rotating rail.

In one of the embodiments, the rotating guide rail is formed with a first annular groove on a side facing the friction cover, the first annular groove being fitted with a portion of the friction cover.

In one embodiment, the fan further comprises a decorative cover, wherein the decorative cover is positioned on one side of the friction cover, which is away from the page turning structure, and covers the friction cover;

The decorative cover is connected with the rotating seat through threads, and the friction cover can axially move relative to the rotating seat.

In one embodiment, the fan is an outdoor fan.

Above-mentioned fan is driven to produce wind-force and make the structure of turning round when the relative back net of center pin AA of turning round when rotating, because the straight wind portion on the structure of turning round is close to center pin AA setting of turning round, consequently, wind energy that a plurality of straight style bars on it derived can satisfy the user and experience the wind sense in the fan dead ahead, and wind-guiding portion is owing to set up in the periphery of straight wind portion, and the arciform wind-guiding style bars on it can guide wind direction out-diffusion for the user that is located the side front of fan also can experience better wind sense. Therefore, the fan of the embodiment of the application can meet the requirement of wider air supply range, and the air quantity is larger because the fan adopts a page turning structure instead of an air duct type or single front net type air outlet structure.

Drawings

Fig. 1 is a schematic structural diagram of a page turning structure according to an embodiment of the application.

Fig. 2 is a diagram showing wind field distribution in an operation state of the page turning structure according to an embodiment of the present application and the page turning structure according to a comparative example.

Fig. 3 is an exploded view of a part of a fan according to an embodiment of the present application.

Fig. 4 is a schematic cross-sectional view of a part of the structure of the fan shown in fig. 3.

Fig. 5 is a schematic structural view of a rotating base in a part of the structure of the fan shown in fig. 3.

Fig. 6 is a schematic structural view of an air guiding frame in a part of the structure of the fan shown in fig. 3.

Fig. 7 is a schematic view of a friction cover in a partial structure of the fan shown in fig. 3.

Reference numerals illustrate:

The rotary blade structure 100, the rotary blade structure 10, the straight wind part 10, the straight style grid 11, the wind guiding part 20, the wind guiding style grid 21, the central hole 30, the central ring 40, the circular grid 50, the rotary guide rail 60 and the annular groove 61;

Fan 200, fan blade 210, back net 220, rotating base 230, first engaging portion 231, rotating surface 232, rotating portion 233, supporting portion 234, screw portion 235, air guiding frame 240, ring-shaped frame 241, center frame 242, positioning portion 2421, connecting frame 243, buckle 244, net cover ring 250, clip groove 251, friction cover 260, cover 261, cover rim 262, second engaging portion 263, rotating rail 270, decorative cover 280.

Detailed Description

In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.

Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.

In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the two parts can be fixedly connected, detachably connected or integrated; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a page turning structure according to an embodiment of the application. The present application provides a hinge structure 100 having a rotation center axis AA, wherein the hinge structure 100 includes a straight air portion 10 and an air guiding portion 20.

The page turning structure 100 provided in the embodiment of the application is applied to a fan, preferably an outdoor fan, and can be also applied to other ventilation products, which is not limited in particular. When the fan or other ventilation products blow the wind force to rotate the blade-rotating structure 100 around the rotation axis AA, the blade-rotating structure 100 can diffuse the wind around.

The straight wind portion 10 has a plurality of straight style bars 11, all of the straight style bars 11 are radially disposed around the rotation center axis AA, and each straight style bar 11 extends linearly in the radial direction of the page turning structure 100.

Typically, the center of the blade structure 100 has a central aperture 30 to provide additional mounting members for mounting the blade structure 100 to the main body of the fan 200.

When all the straight style bars 11 are radially disposed around the rotation center axis AA, all the straight style bars 11 should be wound around the center hole 30 in the middle of the hinge structure 100 and spread in an umbrella shape around.

The wind guiding part 20 is disposed at the periphery of the straight wind part 10, that is, the wind guiding part 20 is disposed farther from the rotation center axis AA than the straight wind part 10. The air guide 20 has a plurality of air guide grills 21, and all the air guide grills 21 are disposed at intervals around the rotation center axis, and each air guide grill 21 is curved in an arc shape in the same direction, and the curved direction of each air guide grill 21 is the same as the rotation direction of the blade 210 of the fan 200.

Each of the guide bars 21 may be curved in a clockwise direction as shown in fig. 1 or curved in a counterclockwise direction.

According to the page turning structure 100 of the embodiment of the application, when wind power blown by a fan or other ventilation products causes the page turning structure 100 to rotate around the rotation axis AA, as the straight wind part 10 is arranged close to the rotation center axis AA, wind energy guided by the plurality of straight wind-guiding grid bars 11 on the page turning structure can meet the wind sensing experience of a user right in front of the page turning structure 100, and the wind guiding part 20 is arranged on the periphery of the straight wind part 10, and the arc wind-guiding grid bars 21 on the wind guiding part can guide wind to spread outwards, so that the user positioned in front of the page turning structure 100 can experience better wind sensing. Therefore, when the page turning structure 100 of the embodiment of the application is applied to fans or other ventilation products, the requirement of a wider air supply range can be met, and because the page turning structure 100 is used instead of an air duct type or single front net type air outlet structure, the air quantity is larger.

In particular, in the embodiment of the present application, the page turning structure 100 includes a center ring 40, the center ring 40 has a center hole 30, and one end of all the straight style bars 11 facing the rotating center axis AA is connected to the outer peripheral wall of the center ring 40, so as to form a fixation of the straight style bars 11.

Further, the straight wind portion 10 and the wind guiding portion 20 may be fixedly connected by an annular circular grille 50, and the circular grille 50 is disposed around the central ring 40.

Specifically, the inner and outer sides of the circular grill 50 are respectively connected to one end of all the straight style grills 11 of the straight air part 10 facing away from the rotation center axis AA and one end of all the guide style grills 21 of the air guide part 20 facing toward the rotation center axis AA.

The circular grille 50 can strengthen the connection between the straight air part 10 and the air guide part 20, and improves the structural strength of each straight style grille 11 of the straight air part 10 and each air guide style grille 21 of the air guide part 20.

Further, the end of the entire guide grid 21 facing away from the rotation center axis AA is connected to the annular edge of the leaf structure 100. In this way, the guide type grill 21 can be fixed.

In the embodiment of the present application, the number of the wind guiding portions 20 is not limited to 1, and the blade rotating structure 100 may include a plurality of wind guiding portions 20, and all the wind guiding portions 20 are sequentially distributed along the radial direction of the blade rotating structure 100.

The provision of a plurality of air guide portions 20 can further widen the air blowing range.

Specifically, all the air guide grills 21 of each air guide 20 are curved in an arc shape in the same direction.

In some embodiments, the spacing between the air guide grills 21 of two adjacent air guide parts 20 may be different or the same.

In the embodiment of the present application, the guide bars 21 are disposed obliquely with respect to the rotation center axis AA of the page turning structure 100.

Table 1:

It is found that, by arranging the air guide grid 21 in an inclined manner with respect to the axial direction of the page turning structure 100, both the air volume and the air velocity output by the page turning structure 100 are increased by arranging the air guide grid 21 in an axially parallel arrangement (comparative example) with respect to the page turning structure 100.

Optionally, the guide grid 21 is inclined at an angle of no more than 60 degrees with respect to the rotation center axis AA of the hinge structure 100.

Specifically, the inclination angle of the air guiding grid 21 with respect to the rotation center axis AA of the page turning structure 100 may be 10 degrees, 20 degrees, 30 degrees, 40 degrees, 60 degrees.

Preferably, the guide type grill 21 is inclined at an angle of 30 degrees with respect to the rotation center axis AA of the page turning structure 100.

As shown in fig. 2, when the air guide grid 21 is inclined at an angle of 30 ° to the rotation center axis AA of the blade-turning structure 100, the air outlet of the blade-turning structure 100 is significantly enlarged to a 0.5 mm wind field (the distance between the double arrows is enlarged).

As shown in fig. 3 and 4, based on the same inventive concept, the present application further provides a fan 200, including a back net 220, the blade rotating structure 100 in any of the above embodiments, and the fan blades 210.

The blade rotating structure 100 and the rear net 220 are disposed opposite to each other along a rotation central axis AA, and the fan blade 210 is located between the rear net 220 and the blade rotating structure 100, where the blade rotating structure 100 can rotate relative to the rear net 220 under the wind force generated by the fan blade 210.

When the fan blade 210 is driven to generate wind force to rotate the blade rotating structure 100 around the rotation center axis AA relative to the rear net 220, since the straight wind portion 10 on the blade rotating structure 100 is disposed close to the rotation center axis AA, wind energy guided by the plurality of straight wind-guiding bars 11 thereon can satisfy the wind sensing experience of the user right in front of the fan 200, and the arc wind-guiding bars 21 on the wind guiding portion 20 can guide the wind direction to spread outwards due to the periphery of the straight wind portion 10, so that the user located in front of the fan 200 can experience better wind sensing. Therefore, the fan 200 according to the embodiment of the present application can meet the requirement of a wider air supply range, and the air volume is larger because the fan 100 is used instead of the air duct type or the single front net type air outlet structure.

It should be noted that the fan 200 of the present application may be an outdoor fan.

Referring to fig. 5 and 6, in particular to the embodiment of the present application, the fan 200 further includes a rotating base 230 and an air guiding frame 240, wherein an outer edge of the air guiding frame 240 is connected to an outer edge of the rear net 220, the rotating base 230 is mounted at a middle portion of the air guiding frame 240, and the hinge structure 100 is rotatably mounted at the rotating base 230.

By providing the connection of the wind guide frame 240 and the rear net 220, a supporting base can be provided for the rotating base 230, so that the hinge structure 100 can be reliably installed. In addition, the air guide frame 240 does not interfere with the air supply from the fan blade 210 to the blade rotating structure 100, so that the blade rotating structure 100 can reliably rotate.

Specifically, the air guiding frame 240 includes an annular frame 241, a central frame 242, and a plurality of connection frames 243, wherein the annular frame 241 is connected to an outer edge of the rear net 220, the central frame 242 is located in a middle portion of the annular frame 241 for the installation of the hinge structure 100, the plurality of connection frames 243 are spaced around the central frame 242, and each connection frame 243 is connected between the annular frame 241 and the central frame 242.

In this way, the air guiding frame 240 is simple in structure and reliable in connection with the rear net 220 and the hinge structure 100.

In other embodiments, the plurality of connection frames 243 may be replaced by connection nets, and the ring-shaped support 241 may be replaced by a support that is not in a closed ring shape, which is not particularly limited.

In some embodiments, the outer edge of the air guiding frame 240 is screwed to the outer edge of the rear mesh 220.

Since the structural strength of the rear net 220 is generally high, in order to improve the connection reliability between the wind guiding frame 240 and the rear net 220, the wind guiding frame 240 can be closely connected with the rear net 220 along the circumferential direction by arranging the way of screwing the outer edge of the wind guiding frame 240 and the outer edge of the rear net 220, so that the structural strength of the wind guiding frame 240 is improved, and further, reliable support is provided for the connection of the rotating seat 230 and the page turning structure 100.

In addition, in order to reliably position the rotating base 230 relative to the middle part of the wind guiding frame 240, in the embodiment of the present application, at least two positioning portions 2421 are provided on the middle part of the wind guiding frame 240, that is, the center frame 242, and all the positioning portions 2421 can be engaged with the first engaging portions 231 on the rotating base 230, thereby positioning the rotating base 230 relative to the wind guiding frame 240. Specifically, when the rotating seat 230 is positioned relative to the air guiding frame 240, the center line of the rotating seat 230 coincides with the center line of the air guiding frame 240, and then when the hinge structure 100 is mounted on the rotating seat 230, the rotation center axis AA of the hinge structure 100 coincides with the center line of the rotating seat 230 and the center line of the air guiding frame 240, so that the mounting accuracy of the hinge structure 100 is improved.

Alternatively, the positioning part 2421 may be a positioning protrusion, and the first fitting part 231 may be a positioning groove fitted with the positioning protrusion.

Alternatively, the positioning parts 2421 include three positioning parts 2421 which are arranged in a triangle shape, and the centers of the three positioning parts 2421 are coincident with the center line of the wind guide frame 240.

In some embodiments, in order to reduce friction resistance when the page turning structure 100 rotates relative to the rotating base 230, the rotating surface 232 of the rotating base 230 and the page turning structure 100 are provided with a concave-convex structure along the circumferential direction. In this way, the contact area between the rotating surface 232 and the page turning structure 100 can be reduced, so as to reduce the friction resistance of the page turning structure 100 when rotating relative to the rotating seat 230, and make the page turning structure 100 easier to rotate under the action of wind force.

In some embodiments, the fan 200 further includes a mesh enclosure 250, where the mesh enclosure 250 is connected to the air guiding frame 240 and covers the outer edge of the air guiding frame 240 and the outer edge of the rear mesh 220.

The outer edge of the wind guiding frame 240 and the outer edge of the rear net 220 are covered by the net cover ring 250, so that the appearance of the connection part between the wind guiding frame 240 and the rear net 220 is more attractive.

Optionally, the mesh enclosure 250 is engaged with an outer edge of the air guiding frame 240. Because the wind guiding frame 240 is light in weight, thin in structure and easy to deform, the outer edge of the wind guiding frame 240 is clamped with the mesh enclosure 250, so that the clamping is easy, and the installation difficulty of the wind guiding frame 240 can be reduced. In other embodiments, the mesh enclosure 250 and the outer edge of the air guiding frame 240 may be connected by a connector, which is not particularly limited.

Specifically, the mesh enclosure ring 250 includes a plurality of clamping grooves 251, the outer edge of the air guiding frame 240 is provided with a plurality of buckles 244, the clamping grooves 251 are arranged along the circumferential direction of the mesh enclosure ring 250 at intervals, and the clamping grooves 251 are clamped with the buckles 244 in a one-to-one correspondence manner.

In the embodiment of the present application, the fan 200 further includes a friction cover 260, the friction cover 260 and the rotating base 230 are disposed opposite to each other along the rotation central axis AA, the hinge structure 100 is located between the friction cover 260 and the rotating base 230, a rotation track 270 is formed between the friction cover 260 and the rotating base 230, and the hinge structure 100 has a rotation guide rail 60 matched with the rotation track 270. Specifically, the rotating guide 60 is part of the central ring 40 of the hinge structure 100.

The friction cover 260 is provided to form a constraint on the axial direction of the hinge structure 100 together with the rotating base 230, and to make the rotation of the hinge structure 100 relative to the rotating base 230 smoother by the formed rotating track 270.

Specifically, the rotating base 230 includes a rotating portion 233 and a supporting portion 234, the supporting portion 234 is disposed around the rotating portion 233, the rotating portion 233 protrudes from the supporting portion 234 toward the friction cover 260, and an outer peripheral surface of the rotating portion 233 is a rotating surface 232 that mates with the hinge structure 100. The friction cover 260 includes a cover 261 and a cover edge 262, wherein the cover edge 262 is connected with the edge of the cover 261 and protrudes from the cover 261 towards the rotating seat 230. A rotation rail 270 is defined between the rotation portion 233 and the friction cover 260, and between the cover rim 262 and the cover 261.

The rotating guide 60 of the hinge structure 100 is formed with an annular groove 61 at a side facing the friction cover 260, and the annular groove 61 is engaged with the cover rim 262.

In this way, not only a rotational guidance of the leaf-turning structure 100 is achieved, but also a radial limitation of the leaf-turning structure 100 is achieved by the annular groove 61.

Further, there is a radial clearance and an axial clearance between the rotating rail 60 and the rotating rail 270.

Specifically, there is a radial gap between the inner and outer sides of the rotating rail 60 and the rotating rail 270.

Therefore, the position of the page turning structure 100 and the rotating seat 230 can be kept concentric, the page turning structure 100 is prevented from being clamped in the rotating track 270 in the rotating process, the friction force generated by mutual contact of all parts in the rotating process is reduced, the energy loss is reduced, and the rotating efficiency is improved.

Referring to fig. 7, in some embodiments, in order to reliably position the friction cover 260 relative to the rotating base 230, a plurality of second engaging portions 263 are disposed on the friction cover 260, and all the positioning portions 2421 are engaged with the first engaging portions 231 on the rotating base 230 and the plurality of second engaging portions 263 of the friction cover 260, so as to position the rotating base 230 and the friction cover 260 relative to the air guiding frame 240. Specifically, when the friction cover 260 is positioned relative to the air guiding frame 240, the center line of the friction cover 260 and the center line of the rotating seat 230 are both coincident with the center line of the air guiding frame 240, and further when the page turning structure 100 is mounted on the rotating seat 230, the rotation center axis AA of the page turning structure 100 is coincident with the center line of the friction cover 260, the center line of the rotating seat 230 and the center line of the air guiding frame 240, so that the mounting accuracy of the page turning structure 100 is improved.

Further, the fan 200 further includes a decoration cover 280, wherein the decoration cover 280 is located at a side of the friction cover 260 facing away from the hinge structure 100, and covers the friction cover 260.

In this way, the decorative cover 280 covers the friction cover 260 to cover at least part of the middle part of the fan 200, so that dust, sundries and the like can be effectively prevented from entering the part to clamp the parts for movement in the using process, and the user can be prevented from using the fan by curiosity or mistake, and the user can stretch his hand into the middle rotating part of the fan 200, thereby improving the using safety.

Further, the decorative cover 280 is screw-coupled to the rotating base 230, and the friction cover 260 is axially movable with respect to the rotating base 230.

In this way, by rotating the decoration cover 280, the friction cover 260 moves axially relative to the rotating seat 230, so that the axial distance between the friction cover 260 and the rotating seat 230 can be reduced or increased, and further the pressure applied to the page turning structure 100 between the two can be increased or reduced, so that the rotating friction force of the page turning structure 100 can be increased or reduced, and the air output range of the fan 200 can be adjusted.

Specifically, a threaded hole is formed in a side of the decoration cover 280 facing the rotation seat 230, a threaded portion 235 is formed in a side of the rotation seat 230 facing the friction cover 260, and the threaded hole is matched with the threaded portion 235.

In order to reliably connect the decorative cover 280 and the rotating seat 230, the friction cover 260 and the hinge structure 100 are respectively provided with a corresponding central hole at the corresponding position for the decorative cover 280 and the rotating seat 230 to pass through.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims (15)

1. A page turning structure for a fan, characterized in that, the page turning structure has a center axis of rotation, the page turning structure includes:

the straight wind part is provided with a plurality of straight style bars, all the straight style bars are radially arranged around the rotating central shaft, and each straight style bar extends linearly along the radial direction of the page turning structure; and

The wind guide part is arranged on the periphery of the direct wind part and is provided with a plurality of wind guide grid bars, all the wind guide grid bars are arranged around the rotation center shaft at intervals, each wind guide grid bar is bent in an arc shape in the same direction, and the bending direction of each wind guide grid bar is the same as the rotation direction of the blades of the fan.

2. The structure of claim 1, wherein the guide bars are disposed obliquely with respect to the central axis of rotation of the structure.

3. The turning structure of claim 2, wherein the angle of inclination of the guide grid with respect to the axial direction of the turning structure is no greater than 60 degrees.

4. A leaf structure according to claim 3, wherein the guide bars are inclined at an angle of 30 degrees to the axial direction of the leaf structure.

5. The page turning structure of any one of claims 1-4, wherein the wind guiding portions comprise a plurality of wind guiding portions, and all of the wind guiding portions are sequentially distributed along the radial direction of the page turning structure.

6. A fan, comprising:

A back net;

The page turning structure according to any one of claims 1 to 5, which is disposed opposite to the rear net along the rotation center axis; and

The fan blade is positioned between the rear net and the page turning structure;

The blade rotating structure can rotate relative to the rear net under the action of wind power generated by the blades.

7. The fan of claim 6, further comprising a rotating base and a wind guiding frame, wherein the outer edge of the wind guiding frame is connected to the outer edge of the rear net, the rotating base is mounted in the middle of the wind guiding frame, and the hinge structure is rotatably mounted on the rotating base.

8. The fan of claim 7, wherein the outer edge of the air guiding frame is screwed to the outer edge of the rear net.

9. The fan of claim 7, further comprising a mesh enclosure coupled to the air guide frame and covering the outer edge of the air guide frame and the outer edge of the rear mesh.

10. The fan of claim 9, wherein the mesh enclosure is snap-fit with an outer edge of the air guide frame.

11. The fan of claim 7 further comprising a friction cover disposed opposite the rotating base along the central axis of rotation, the hinge structure being located between the friction cover and the rotating base;

And a rotating track is formed between the friction cover and the rotating seat, and the page turning structure is provided with a rotating guide rail matched with the rotating track.

12. The fan of claim 11 wherein there is a radial gap and an axial gap between the rotating track and the rotating rail.

13. The fan as claimed in claim 11, wherein the rotation guide is formed with a first annular groove at a side facing the friction cover, the first annular groove being engaged with a portion of the friction cover.

14. The fan of claim 11 further comprising a decorative cover positioned on a side of the friction cover facing away from the hinge structure and covering the friction cover;

the decorative cover is in threaded connection with the rotating seat, and the friction cover can axially move relative to the rotating seat.

15. The fan of claim 6, wherein the fan is an outdoor fan.