CN220539907U - Foldable fan based on structural optimization - Google Patents

Abstract

The application discloses collapsible fan based on structural optimization includes: a fan main body, wherein one end of the fan main body is provided with two opposite first rotating shaft holes and second rotating shaft holes; the storage shell is provided with a first rotating shaft and a second rotating shaft which are matched with the first rotating shaft hole and the second rotating shaft hole, and a storage cavity for storing the fan main body is formed in the storage shell; the fan comprises a fan body and is characterized in that a first limiting piece and a second limiting piece are arranged in the fan body respectively, the first limiting piece is abutted with the first rotating shaft, and the second limiting piece is abutted with the second rotating shaft so as to keep the relative space form between the fan body and the storage shell. The setting of two locating parts through the inner structure of fan main part, increases the interaction force between fan main part and the housing, makes the fan main part and the relative space form of housing keep more stable, is difficult for being changed the form of two easily by external force, makes things convenient for collapsible fan's use.

Description

Foldable fan based on structural optimization

Technical Field

The application relates to the field of fans, in particular to a foldable fan based on structural optimization.

Background

In hot summer, the fan becomes a necessary article for people to eliminate the heat, and is more favored by people along with the convenient use requirement of people and lighter weight and portability.

The folding fan is convenient to carry and is liked by users due to small volume. In the prior art, the folding fan comprises a storage shell with a storage cavity and a fan main body with a fan assembly, wherein the fan main body is movably connected with the storage shell. When the folding fan is used, in order to ensure stability of the fan-out direction of the folding fan, it is necessary to maintain the spatial configuration between the fan main body and the housing case in a specific configuration.

The inventors of the present utility model have found in research that the folding fan of the prior art center maintains the relative configuration between the fan body and the housing case by the friction between the contact surfaces of the fan body and the housing case. With the use of the friction between the contact surfaces of the fan body and the storage shell, the friction gradually reduces, so that the fan body and the storage shell cannot be kept stable in shape, and the use of the folding fan is affected.

Disclosure of Invention

An object of the present application is to provide a foldable fan based on structural optimization, which strengthens the morphological stability between the fan body and the housing case by a stopper provided in the fan body.

The embodiment of the application provides a foldable fan based on structural optimization, which comprises:

a fan main body, wherein one end of the fan main body is provided with two opposite first rotating shaft holes and second rotating shaft holes;

the storage shell is provided with a first rotating shaft and a second rotating shaft which are matched with the first rotating shaft hole and the second rotating shaft hole, and a storage cavity for storing the fan main body is formed in the storage shell;

the fan comprises a fan body and is characterized in that a first limiting piece and a second limiting piece are arranged in the fan body respectively, the first limiting piece is abutted with the first rotating shaft, and the second limiting piece is abutted with the second rotating shaft so as to keep the relative space form between the fan body and the storage shell.

Optionally, the first rotating shaft and the second rotating shaft each comprise a plurality of connecting plates, the plurality of connecting plates are arranged at intervals in a surrounding mode to form an annular rotating shaft, the first limiting piece is in butt joint with at least one connecting plate of the first rotating shaft, and the second limiting piece is in butt joint with at least one connecting plate of the second rotating shaft.

Optionally, the outer side surface of each of the plurality of connection plates is raised to form an arc-shaped protrusion, the first limiting piece is abutted with at least one arc-shaped protrusion of the first rotating shaft, and the second limiting piece is abutted with at least one arc-shaped protrusion of the second rotating shaft.

Optionally, the outer side surface of each of the plurality of connection plates is raised to form an arc-shaped boss, the arc-shaped boss is arranged on the arc-shaped boss, and the arc-shaped boss are configured to be in a stepped structure.

Optionally, each of the plurality of connection plates is configured in an arc shape.

Optionally, the foldable fan based on structural optimization further comprises: the first connecting buckle and the second connecting buckle, one end of the first connecting buckle is inserted into the middle of the plurality of connecting plates of the first rotating shaft, the other end of the first connecting buckle is positioned on the outer surface of the storage shell, one end of the second connecting buckle is inserted into the middle of the plurality of connecting plates of the second rotating shaft, and the other end of the second connecting buckle is positioned on the outer surface of the storage shell.

Optionally, the first connecting buckle and the second connecting buckle each include: the elastic buckle comprises a buckle cap, a first elastic strip and a second elastic strip, wherein the first elastic strip and the second elastic strip are connected to one side of the buckle cap, and a gap is reserved between the first elastic strip and the second elastic strip.

Optionally, the hanging ends of the first elastic strip and the second elastic strip are respectively provided with a clamping tongue; or,

the surface of the storage shell facing the buckling cap is inwards sunken to form a buckling groove, and a positioning protrusion corresponding to the positioning groove is arranged in the buckling groove.

Optionally, the first limiting member and the second limiting member each include: the first clamping groove and the second clamping groove of the first limiting part are distributed on two sides of the first rotating shaft in a relative mode, and are respectively in butt joint with the first rotating shaft, and the first clamping groove and the second clamping groove of the second limiting part are distributed on two sides of the second rotating shaft in a relative mode, and are respectively in butt joint with the second rotating shaft.

Optionally, the first clamping groove and the second clamping groove are formed by a first limiting strip and a second limiting strip which are arranged inside the fan main body, the first limiting strip and the second limiting strip are arranged on opposite sides of the first limiting strip and the second limiting strip, the reinforcing plate is connected with the inner surface of the fan main body, and the height of the reinforcing plate is smaller than that of the first limiting strip and the second limiting strip.

The beneficial effects of the embodiment of the application are that: two opposite shaft holes are formed in the fan main body, two rotating shafts matched with the shaft holes are arranged on the storage shell, and when the two rotating shafts are matched with the two shaft holes, the fan main body and the storage shell can rotate relatively. Set up two locating parts in the fan main part, two locating parts respectively with first pivot and the mutual butt of second pivot, the setting of two locating parts, through the inner structure of fan main part, increase the interaction force between fan main part and the housing, make the fan main part and the relative space form of housing keep more stable, be difficult for by external force change the form of both easily, the convenient use of collapsible fan.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic view of the overall structure of a foldable fan according to one embodiment of the present application;

FIG. 2 is an exploded view of a first housing and a second housing according to one embodiment of the present application;

FIG. 3 is a schematic view of a housing according to an embodiment of the present disclosure;

FIG. 4 is an enlarged partial schematic view of a second shaft (A) according to one embodiment of the present application;

FIG. 5 is a schematic diagram of an exploded construction of a foldable fan according to one embodiment of the present application;

fig. 6 is a schematic structural diagram of a first connecting buckle according to an embodiment of the present application.

Description of the drawings: 1. a fan main body; 11. a first housing; 12. a second housing; 13. a first rotation shaft hole; 14. a second rotation shaft hole; 15. a first connecting buckle; 16. the second connecting buckle; 151. 161, buckling the cap; 152. 162, a first elastic strip; 153. 163, a second elastic strip; 17. a first limiting member; 18. a second limiting piece; 171. 181, a first clamping groove; 172. 182, a second clamping groove; 19. a positioning groove; 2. a storage case; 21. a first rotating shaft; 22. a second rotating shaft; 221. a connecting plate; 222. arc-shaped bulges; 223. arc-shaped bosses; 23. a snap ring groove; 231. positioning the bulge; 3. a fan assembly; 31. a fan motor; 32. fan blades; 33. a motor shaft; 34. a motor shaft hole; 4. a reinforcing plate; 5. a clamping tongue.

Detailed Description

In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used in this specification includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, fig. 1 is a schematic diagram of the overall structure of a foldable fan based on structural optimization in the present embodiment; fig. 2 is a schematic perspective view of the first housing and the second housing according to the present embodiment.

As shown in fig. 1, a foldable fan based on structural optimization includes: a fan main body 1 and a housing case 2. One end of the fan main body 1 is provided with two opposite first rotating shaft holes 13 and second rotating shaft holes 14; the housing 2 is provided with a first rotating shaft 21 and a second rotating shaft 22 which are matched with the first rotating shaft hole 13 and the second rotating shaft hole 14, the housing 2 is provided with a housing cavity (not shown) for housing the fan body 1, the fan body 1 is respectively provided with a first limiting piece 17 and a second limiting piece 18, the first limiting piece 17 is abutted with the first rotating shaft 21, and the second limiting piece 18 is abutted with the second rotating shaft 22 so as to keep the relative space form between the fan body 1 and the housing 2.

The fan assembly 3 is provided on the fan body 1. The fan main body 1 includes: a first housing 11 and a second housing 12. The fan assembly 3 includes: a fan motor 31 and fan blades 32. The first shell 11 is provided with a motor shaft hole 34; the fan motor 31 is disposed in the first housing 11, and a motor shaft 33 of the fan motor 31 is inserted into and passes through the motor shaft hole 34; the fan blade 32 is disposed outside the first housing 11 and connected to an end of the motor shaft 33 that extends out of the motor shaft hole 34.

In some embodiments, the fan body 1 can also be molded as a complete housing by an integral molding process.

The fan main body 1 is provided with a first rotating shaft hole 13 and a second rotating shaft hole 14 at one end connected with the storage shell 2, and the first rotating shaft hole 13 and the second rotating shaft hole 14 are respectively arranged at the joint positions of the first shell 11 and the second shell 12. However, the opening positions of the first and second rotation shaft holes 13 and 14 are not limited thereto, and the first and second rotation shaft holes 13 and 14 can be opened on the first housing 11 or the second housing 12 in some embodiments according to the specific application scenario. When the fan body 1 is in an integrally formed structure, the first rotating shaft hole 13 and the second rotating shaft hole 14 are formed at any position at one end of the fan body 1.

The accommodating housing 2 is provided with an accommodating cavity, one end of the accommodating housing 2 connected with the fan main body 1 is extended to form two lugs (not labeled), and the two lugs are respectively provided with a first rotating shaft 21 and a second rotating shaft 22 which are matched with the first rotating shaft hole 13 and the second rotating shaft hole 14.

In some embodiments, the first and second rotating shafts 21 and 22 are disposed inside the receiving cavity.

The first rotating shaft 21 is inserted into the first rotating shaft hole 13, and the second rotating shaft 22 is inserted into the second rotating shaft hole 14. Through the synchronous linkage rotation of the first rotating shaft 21 and the second rotating shaft 22 in the first rotating shaft hole 13 and the second rotating shaft hole 14 respectively, the rotating connection between the fan main body 1 and the containing shell 2 is realized, so that the fan main body 1 can be contained in the containing cavity of the fan shell, and the fan main body 1 can be exposed out of the containing shell 2 through rotation.

The first stopper 17 and the second stopper 18 are respectively abutted against the first rotation shaft 21 and the second rotation shaft 22, and the abutting relationship between the first stopper 17 and the second stopper 18 and the first rotation shaft 21 and the second rotation shaft 22 can be continuous or can be intermittent. When the first stopper 17 and the second stopper 18 continuously contact the first rotation shaft 21 and the second rotation shaft 22, the first stopper 17 and the second stopper 18 can maintain the relative spatial configuration of any angle between the fan main body 1 and the housing case 2. When the first stopper 17 and the second stopper 18 are in contact with the first shaft 21 and the second shaft 22 at intervals, the first stopper 17 and the second stopper 18 are separated from contact with the first shaft 21 and the second shaft 22 at intervals along with the change of the positions of the fan main body 1 and the housing case 2, and at this time, the first stopper 17 and the second stopper 18 do not have the function of maintaining the relative spatial form between the fan main body 1 and the housing case 2. The first stopper 17 and the second stopper 18 are brought into contact with the first rotation shaft 21 and the second rotation shaft 22 again with a gap between the first stopper 17 and the second stopper 18 in accordance with the change in the position of the fan main body 1 and the housing case 2, and at this time, the first stopper 17 and the second stopper 18 have a function of maintaining the relative spatial configuration between the fan main body 1 and the housing case 2.

In the above embodiment, two opposite shaft holes are formed in the fan main body 1, two rotating shafts for matching the shaft holes are provided in the housing case 2, and when the two rotating shafts match the two shaft holes, the fan main body 1 and the housing case 2 can rotate relatively. Set up two locating parts in fan main part 1, two locating parts respectively with first pivot 21 and the mutual butt of second pivot 22, the setting of two locating parts, through the inner structure of fan main part 1, increase the interaction force between fan main part 1 and the housing case 2, make fan main part 1 and housing case 2 relative space form keep more stable, be difficult for by external force change the form of both easily, the use of convenient collapsible fan.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a housing case according to the present embodiment.

As shown in fig. 3, the first rotating shaft 21 and the second rotating shaft 22 each include a plurality of connecting plates 221, the plurality of connecting plates 221 are circumferentially arranged at intervals to form an annular rotating shaft, the first limiting member 17 is abutted with at least one connecting plate 221 of the first rotating shaft 21, and the second limiting member 18 is abutted with at least one connecting plate 221 of the second rotating shaft 22.

The number of the connection plates 221 constituting the first rotation shaft 21 is 4. However, the number of the connection plates 221 of the first rotation shaft 21 is not limited thereto, and in some embodiments, the number of the connection plates 221 constituting the first rotation shaft 21 can be (not limited to): 2, 3, 5 or more.

The number of the connection plates 221 constituting the second rotation shaft 22 is 4. However, the number of the connection plates 221 of the second rotation shaft 22 is not limited thereto, and in some embodiments, the number of the connection plates 221 constituting the second rotation shaft 22 can be (but is not limited to): 2, 3, 5 or more.

The plurality of connection plates 221 of the first rotation shaft 21 are enclosed to form a hollow ring-shaped rotation shaft, and since the plurality of connection plates 221 are spaced from each other, when any one of the plurality of connection plates 221 or the plurality of connection plates 221 is pressed, the connection plates 221 can be deformed toward the inside of the ring-shaped rotation shaft.

The plurality of connection plates 221 of the second rotation shaft 22 are enclosed to form a hollow ring-shaped rotation shaft, and since the plurality of connection plates 221 are spaced from each other, when any one of the plurality of connection plates 221 or the plurality of connection plates 221 is pressed, the connection plates 221 can be deformed toward the inside of the ring-shaped rotation shaft.

The plurality of connection plates 221 constituting the first rotation shaft 21 and the second rotation shaft 22 each have a space, and thus, abutment with the first stopper 17 and the second stopper 18 occurs at a space. The first rotation shaft 21 and the second rotation shaft 22 are abutted against the first stopper 17 and the second stopper 18 at intervals, and the fan main body 1 and the housing case 2 can have higher stability at a specific spatial position than at other spatial positions. Friction losses between the first rotating shaft 21 and the second rotating shaft 22 and the first limiting piece 17 and the second limiting piece 18 are reduced, and the damping level change when a user rotates the foldable fan is improved, so that the user can use the foldable fan more conveniently. Meanwhile, the spaced connection plates 221 enable the fan main body 1 and the storage case 2 to have stronger stability at a specific position, which can be perceived by a user through resistance change, and facilitate the user to rotate the foldable fan to a predetermined proper use position.

Referring to fig. 4, fig. 4 is an enlarged partial view of the second axis (a) of the present embodiment.

As shown in fig. 4, each of the plurality of connection plates 221 of the first rotation shaft 21 and the second rotation shaft 22 is bulged on an outer side surface to form an arc-shaped protrusion 222, the first stopper 17 is abutted against at least one arc-shaped protrusion 222 of the first rotation shaft 21, and the second stopper 18 is abutted against at least one arc-shaped protrusion 222 of the second rotation shaft 22.

The arrangement of the arc-shaped protrusions 222 can enable the fan body 1 to rotate with the storage shell 2 more smoothly, and friction between the arc-shaped protrusions 222 and the first limiting piece 17 and the second limiting piece 18 in the rotation process is reduced.

An arc-shaped boss 223 is formed to bulge on an outer side surface of each of the plurality of connection plates 221, the arc-shaped boss 222 is provided on the arc-shaped boss 223, and the arc-shaped boss 223 and the arc-shaped boss 222 are configured in a stepped structure.

The stacked stepped configuration of the arcuate bosses 223 and arcuate protrusions 222 enables the foldable fan to transition more smoothly when rotated. When the first rotation shaft 21 and the second rotation shaft 22 rotate along with the rotation of the foldable fan, the first limiting member 17 and the second limiting member 18 firstly abut against the surface of the arc-shaped boss 223 on the connecting plate 221, and then smoothly transition along the surface of the arc-shaped boss 223 to be in surface contact with the arc-shaped boss 222. In this process, the arcuate projections 223 and 222 are arcuate surfaces, so that the transition in the turning process is smoother. And the height of the arc-shaped protrusion 222 is raised by the arc-shaped boss 223, so that the arc-shaped protrusion 222 is contacted with the first limiting piece 17 and the second limiting piece 18 more stably.

Each connection plate 221 of the plurality of connection plates 221 is configured in an arc shape. The arc-shaped connecting plate 221 encloses the first rotating shaft 21 and the second rotating shaft 22 which are formed by the combination, so that the hysteresis sense of the rotating process of the folding fan is avoided, and the rotation of the folding fan is smoother. However, the shape of the connection plate 221 is not limited thereto, and in some embodiments, the shape of the connection plate 221 can be (not limited to): triangular, rectangular, cylindrical, or semi-cylindrical, etc.

Referring to fig. 5, fig. 5 is an exploded view of a foldable fan based on structural optimization according to the present embodiment.

As shown in fig. 5, the foldable fan further includes: the first connecting buckle 15 and the second connecting buckle 16, wherein one end of the first connecting buckle 15 is inserted between a plurality of connecting plates 221 of the first rotating shaft 21, the other end of the first connecting buckle 15 is positioned on the outer surface of the storage shell 2, one end of the second connecting buckle 16 is inserted between a plurality of connecting plates 221 of the second rotating shaft 22, and the other end of the second connecting buckle 16 is positioned on the outer surface of the storage shell 2.

In the rotation process of the folding fan, the connecting plate 221 can bend towards the inside of the annular rotating shaft after being extruded by the first limiting piece 17 and the second limiting piece 18, and in the bending deformation process, if the deformation is too large, the damage to the connecting plate 221 can be caused, so that the connecting plate 221 lacks resilience force, and is difficult to restore to the original state and position. Further, the ability to maintain the relative spatial configuration between the fan main body 1 and the housing case 2 is reduced. And the first connecting buckle 15 and the second connecting buckle 16 are inserted between the connecting plates 221, so that the deformation of the connecting plates 221 of the first rotating shaft 21 and the second rotating shaft 22 can be prevented from being excessively large.

The first connecting buckle 15 and the second connecting buckle 16 each include: the button caps 151, 161, the first elastic strips 152, 162 and the second elastic strips 153, 163 are connected at one side of the button caps 151, 161, and a gap is formed between the first elastic strips 152, 162 and the second elastic strips 153, 163.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a first connecting buckle according to the present embodiment.

As shown in fig. 6, in the present embodiment, the shape of the caps 151, 161 is configured in an arc shape. However, the shape of the button caps 151, 161 is not limited thereto, and in some embodiments, the shape of the button caps 151, 161 can be (but is not limited to): cylinders, prisms, run-out shapes, or irregular shapes.

The arrangement of the button caps 151 and 161 can prevent external dust or sundries from entering the fan body 1 through the annular rotating shaft, and well protect the internal structure of the fan body 1 from being damaged and polluted.

The first elastic strips 152, 162 and the second elastic strips 153, 163 are arranged such that the first elastic strips 152, 162 and the second elastic strips 153, 163 have a deformability upon being squeezed. When the folding fan rotates, the connecting plate 221 bends towards the inside of the annular rotating shaft after being extruded by the first limiting piece 17 and the second limiting piece 18, in the bending deformation process, the connecting plate 221 contacts the first elastic strips 152, 162 or the second elastic strips 153, 163 and pushes the first elastic strips 152, 162 or the second elastic strips 153, 163 to deform, in the recovery process, the first elastic strips 152, 162 or the second elastic strips 153, 163 can provide a restoring force for the connecting plate 221, so that the connecting plate 221 can be better restored to the original position, the risk that bending fatigue of the connecting plate 221 caused by long-term repeated bending cannot be restored is reduced, and the rotating life of the folding fan is prolonged.

The first elastic strips 152, 162 and the second elastic strips 153, 163 are provided with a tongue 5 at their free ends. The arrangement of the clamping tongue 5 can prevent the first connecting buckle 15 and the second connecting buckle 16 from falling off, so that the stability between the first connecting buckle 15 and the second connecting and the first rotating shaft 21 and the second rotating shaft 22 is enhanced.

The surface of the buckling caps 151 and 161 facing the storage shell 2 is provided with a positioning groove 19, the surface of the storage shell 2 facing the buckling caps 151 and 161 is inwards sunken to form a buckling ring groove 23, and the buckling ring groove 23 is internally provided with a positioning protrusion 231 corresponding to the positioning groove 19. The arrangement of the snap ring groove 23 can enable the connection between the snap caps 151, 161 and the surface of the storage shell 2 to be smoother, the clearance between the snap caps 151, 161 and the storage shell 2 is smaller, and the dustproof effect is better. The positioning groove 19 and the positioning protrusion 231 can simplify the assembly of the locking caps 151 and 161, and can prevent the locking caps 151 and 161 from being rotated by external force, thereby causing friction between the locking caps 151 and 161 and the surface of the storage housing 2 and damage.

The first stopper 17 and the second stopper 18 each include: the first clamping grooves 171 and 181 and the second clamping grooves 172 and 182 of the first limiting member 17 are distributed on two sides of the first rotating shaft 21 in an opposite mode, and are respectively abutted to the first rotating shaft 21, and the first clamping grooves 181 and the second clamping grooves 182 of the second limiting member 18 are distributed on two sides of the second rotating shaft 22 in an opposite mode, and are respectively abutted to the second rotating shaft 22.

The first engagement grooves 171 and 181 and the second engagement grooves 172 and 182 may be provided along the longitudinal direction or the thickness direction of the fan main body 1. However, the arrangement direction of the first and second catching grooves 171, 181, 172, 182 is not limited thereto, and in some embodiments, the first and second catching grooves 171, 181, 172, 182 may be circumferentially arranged at any angle within a circumferential 360 ° range of the first and second rotating shafts 21, 22.

The first engagement grooves 171 and 181 and the second engagement grooves 172 and 182 may be formed on the inner surface of the fan body 1, or may be formed to protrude from the inner surface of the fan body 1. The first and second engaging grooves 171, 181, 172, 182 can also be provided on the inner member of the fan main body 1. For example, when the fan main body 1 includes the first casing 11 and the second casing 12, the second casing 12 is provided with an engagement structure for engagement connection, and the first engagement grooves 171, 181 or the second engagement grooves 172, 182 are provided on the engagement structure.

The arrangement of the first clamping grooves 171, 181 and the second clamping grooves 172, 182 can increase the contact area between the first limiting member 17 and the second limiting member 18 and the first rotating shaft 21 and the second rotating shaft 22, increase the abutting force, and make the relative space form between the fan main body 1 and the storage housing 2 more stable during abutting. Meanwhile, when the groove-shaped structure is abutted against the first rotating shaft 21 and the second rotating shaft 22, local clamping force is generated on the first rotating shaft 21 and the second rotating shaft 22, and the stability of the relative space form between the fan main body 1 and the storage shell 2 during abutting is further improved.

When the first clamping grooves 171 and 181 and the second clamping grooves 172 and 182 are matched with the arc-shaped protrusions 222 for use, part of the structure of the arc-shaped protrusions 222 can be inserted into the grooves, so that the relative space between the fan main body 1 and the storage shell 2 is further stabilized.

The first clamping grooves 171, 181 and the second clamping grooves 172, 182 are each composed of a first limit bar (not identified) and a second limit bar (not identified) provided inside the fan main body 1. The first limit bar and the second limit bar are parallel to each other. However, the structures of the first and second locking grooves 171, 181, 172, 182 are not limited thereto, and in some embodiments, the first and second locking grooves 171, 181, 172, 182 may be (not limited to): u-shaped grooves, C-shaped grooves, wedge-shaped grooves, etc.

The first clamping grooves 171, 181 and the second clamping grooves 172, 182 are respectively formed by a first limiting bar and a second limiting bar which are arranged inside the fan main body, one sides of the first limiting bar and the second limiting bar which are opposite are respectively provided with a reinforcing plate 4, the reinforcing plates 4 are connected with the inner surface of the fan main body, and the height of the reinforcing plates 4 is smaller than that of the first limiting bar and the second limiting bar. The physical strength of the first limit bar and the second limit bar can be enhanced by the arrangement of the reinforcing plate 4, the clamping and strength of the first clamping grooves 171 and 181 and the second clamping grooves 172 and 182 are enhanced, and the stability of the shape of the foldable fan is improved. Meanwhile, since the height of the reinforcing plate 4 is smaller than the heights of the first and second stopper bars, no reinforcement is made at the positions where the first and second clamping grooves 171, 181 and 172, 182 abut against the first or second rotating shaft 21, 22. The problem of serious friction damage caused by overlarge physical strength of the abutting positions of the first clamping grooves 171 and 181 and the second clamping grooves 172 and 182 can be avoided, and the service life is prolonged.

It should be noted that the description and drawings of the present application show preferred embodiments of the present application, but the present application may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, which are not to be construed as additional limitations on the content of the present application, but are provided for the purpose of providing a more thorough understanding of the present disclosure. The above-described features are further combined with each other to form various embodiments not listed above, and are considered to be the scope of the present utility model described in the specification; further, modifications and variations of the present utility model may occur to those skilled in the art in light of the foregoing teachings, and all such modifications and variations are intended to be within the scope of the appended claims.

Claims (10)

1. A foldable fan based on structural optimization, comprising:

a fan main body, wherein one end of the fan main body is provided with two opposite first rotating shaft holes and second rotating shaft holes;

the storage shell is provided with a first rotating shaft and a second rotating shaft which are matched with the first rotating shaft hole and the second rotating shaft hole, and a storage cavity for storing the fan main body is formed in the storage shell;

the fan comprises a fan body and is characterized in that a first limiting piece and a second limiting piece are arranged in the fan body respectively, the first limiting piece is abutted with the first rotating shaft, and the second limiting piece is abutted with the second rotating shaft so as to keep the relative space form between the fan body and the storage shell.

2. The structurally optimized foldable fan according to claim 1, wherein the first shaft and the second shaft each comprise a plurality of connection plates, the plurality of connection plates are circumferentially arranged at intervals to form an annular shaft, the first limiting member is abutted with at least one connection plate of the first shaft, and the second limiting member is abutted with at least one connection plate of the second shaft.

3. The structurally optimized foldable fan of claim 2, wherein each of the plurality of connection plates has an arcuate projection formed thereon on an outer side surface thereof, the first stop being in abutment with at least one arcuate projection of the first shaft, the second stop being in abutment with at least one arcuate projection of the second shaft.

4. The structurally optimized foldable fan of claim 3, wherein the outboard surface of each of the plurality of webs is raised to form an arcuate boss, the arcuate boss being disposed on the arcuate boss, the arcuate boss and the arcuate boss being configured in a stepped configuration.

5. The structurally optimized foldable fan of any of claims 2-4, wherein each of the plurality of connection plates is configured in an arc shape.

6. The structurally optimized based foldable fan of claim 2, further comprising: the first connecting buckle and the second connecting buckle, one end of the first connecting buckle is inserted into the middle of the plurality of connecting plates of the first rotating shaft, the other end of the first connecting buckle is positioned on the outer surface of the storage shell, one end of the second connecting buckle is inserted into the middle of the plurality of connecting plates of the second rotating shaft, and the other end of the second connecting buckle is positioned on the outer surface of the storage shell.

7. The structurally optimized foldable fan of claim 6, wherein the first connector link and the second connector link each comprise: the elastic buckle comprises a buckle cap, a first elastic strip and a second elastic strip, wherein the first elastic strip and the second elastic strip are connected to one side of the buckle cap, and a gap is reserved between the first elastic strip and the second elastic strip.

8. The structurally optimized foldable fan according to claim 7, wherein the first and second elastic strips are provided with tabs at the free ends thereof; or,

the surface of the storage shell facing the buckling cap is inwards sunken to form a buckling groove, and a positioning protrusion corresponding to the positioning groove is arranged in the buckling groove.

9. The structurally optimized foldable fan of claim 1, wherein the first and second limiting members each comprise: the first clamping groove and the second clamping groove of the first limiting part are distributed on two sides of the first rotating shaft in a relative mode, and are respectively in butt joint with the first rotating shaft, and the first clamping groove and the second clamping groove of the second limiting part are distributed on two sides of the second rotating shaft in a relative mode, and are respectively in butt joint with the second rotating shaft.

10. The foldable fan based on structural optimization of claim 9, wherein the first clamping groove and the second clamping groove are respectively formed by a first limiting bar and a second limiting bar which are arranged inside the fan main body, reinforcing plates are arranged on opposite sides of the first limiting bar and the second limiting bar, the reinforcing plates are connected with the inner surface of the fan main body, and the height of the reinforcing plates is smaller than that of the first limiting bar and the second limiting bar.