Fan with retractable fan blades

Abstract

The utility model relates to a fan with retractable fan blades, which comprises a mounting seat, a fan blade mounting rack rotatably mounted on the mounting seat and fan blades mounted on the fan blade mounting rack, the fan blade mounting rack comprises a plurality of fan blade mounting parts and a middle connecting piece, and the plurality of fan blade mounting parts are uniformly arranged on the peripheral side of the middle connecting piece. The fan blades are rotatably arranged in the fan blade mounting part through the rotating piece, and the fan blades can rotate relative to the fan blade mounting part in a preset angle interval; a springback piece is arranged between the rotating piece and the middle connecting piece and used for enabling the fan blades to have the tendency of rotating to the initial position. According to the fan, the fan blades can rotate relative to the fan blade mounting part, so that the fan blades are shrunk, the storage space for daily storage of the fan can be reduced, carrying and transportation are facilitated, and the fan blades can be protected from being easily touched and broken.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field especially a fan blade retractable fan. BACKGROUND

[0002] The fan blade of the existing fan is generally not retractable, so that the volume of the fan is increased when a large fan blade is needed, thereby increasing the storage space and being not conducive to carrying and transporting.

[0003] Meanwhile, the fan blade of the fan without the fan blade protection net is easy to be scratched and damaged, thereby affecting the service life. SUMMARY

[0004] In view of the above situation, it is necessary to provide a fan blade retractable fan to solve the problem of non-retractable fan blade.

[0005] A fan blade retractable fan, comprising a mounting seat, a fan blade mounting frame rotatably mounted on the mounting seat, and a fan blade mounted on the fan blade mounting frame, the fan blade mounting frame comprises a plurality of fan blade mounting portions and an intermediate connecting piece, the plurality of fan blade mounting portions are uniformly arranged on the side of the intermediate connecting piece, the fan blade is rotatably arranged in the fan blade mounting portion through a rotating piece, and the fan blade can rotate relative to the fan blade mounting portion within a preset angle range.

[0006] A resilient piece is arranged between the rotating piece and the intermediate connecting piece, and the resilient piece is used to make the fan blade have a tendency to rotate back to the initial position.

[0007] Further, the fan blade mounting portion is provided with a fan blade mounting interval, the rotating piece is connected with the fan blade, and the rotating piece is rotatably mounted in the fan blade mounting interval.

[0008] The fan blade mounting interval is provided with a limiting portion for limiting the rotation angle of the rotating piece.

[0009] Further, an installation column is arranged in the middle of the fan blade mounting interval.

[0010] The rotating piece comprises a first mounting piece, and a sleeve is arranged in the middle of the first mounting piece.

[0011] The first mounting piece is rotatably sleeved on the installation column through the sleeve, and the fan blade is mounted on the first mounting piece.

[0012] Further, the rotating piece comprises a second mounting piece, and the second mounting piece clamps and fixes the fan blade on the first mounting piece.

[0013] Further, the first mounting member on the side of the sleeve is provided with a plurality of mounting grooves, the mounting head of the fan blade is provided with a plurality of first through holes corresponding to the mounting grooves, the top of the mounting groove abuts the first through hole, and the second mounting member is provided with a plurality of mounting rods corresponding to the mounting grooves, the mounting rod is inserted into the mounting groove by penetrating the first through hole from the side of the first through hole away from the mounting groove, so as to achieve the purpose of mounting the second mounting member on the first mounting member and fixing the fan blade.

[0014] Further, the first mounting member on the side of the sleeve is provided with a plurality of mounting grooves, the mounting head of the fan blade is provided with a plurality of first through holes corresponding to the mounting grooves, the top of the mounting groove abuts the first through hole, and the second mounting member is provided with a plurality of mounting rods corresponding to the mounting grooves, the mounting rod is inserted into the mounting groove by penetrating the first through hole from the side of the first through hole away from the mounting groove, so as to achieve the purpose of mounting the second mounting member on the first mounting member and fixing the fan blade.

[0015] The limiting portion is a second through hole or a gap on the side of the fan blade installation interval.

[0016] Further, the top of the mounting column is provided with a multi-petal arc-shaped extension block, the outer side of the extension block is provided with a second limiting protrusion, and the first mounting member, the fan blade and the second mounting member are sequentially sleeved into the mounting column from one end of the extension block, and the second limiting protrusion limits the second mounting member from being separated from the extension block.

[0017] Further, the second mounting member is provided with a first mounting hook, the intermediate connecting member is provided with a second mounting hook, and the resilient member is arranged between the first mounting hook and the second mounting hook.

[0018] Further, the mounting seat comprises a base, a front mounting seat and a rear mounting seat arranged in front and back, the fan blade mounting frame is rotatably mounted on the rear mounting seat, the fan blade mounting frame is located in the installation gap between the front mounting seat and the rear mounting seat, and the front mounting seat and the rear mounting seat are mounted on the base.

[0019] Further, the front mounting seat and the rear mounting seat each comprise a first fixing member, a second fixing member and a support member, the first fixing member and the support member are connected through a plug-in assembly, the second fixing member penetrates the support member from one end of the support member and is buckled with the first fixing member, the first fixing member is arranged on the inner side of the support member, and the second fixing member is arranged on the outer side of the support member.

[0020] The above-mentioned fan blade is arranged to be rotatable relative to the fan blade mounting portion, so that the fan blade is driven by centrifugal force to rotate outward relative to the fan blade mounting portion in the process of rotation of the intermediate connecting member, thereby achieving the purpose of unfolding the fan blade, and after the rotation speed of the intermediate connecting member is reduced, the elastic force of the resilient member drives the fan blade to rotate inward, thereby achieving the purpose of folding the fan blade, which can reduce the storage space for daily storage of the fan, is beneficial to carrying and transportation, and can protect the fan blade from being easily touched and broken. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structure schematic view of the fan blade retractable fan of the embodiment of the utility model;

[0022] Figure 2 is another structure schematic view of the fan blade retractable fan of the embodiment of the utility model;

[0023] Figure 3 is a structure schematic view of the fan blade retractable fan of the embodiment of the utility model (hides the mounting seat);

[0024] Figure 4 is an explosion structure schematic view of the fan blade retractable fan of the embodiment of the utility model;

[0025] Figure 5 is another explosion structure schematic view of the fan blade retractable fan of the embodiment of the utility model;

[0026] Figure 6 is a structure schematic view of the fan blade retractable fan of the embodiment of the utility model (only shows the front mounting seat and the base);

[0027] Figure 7 is a structure schematic view of the fan blade retractable fan of the embodiment of the utility model (only shows the rear mounting seat and the base);

[0028] Figure 8 is another structure schematic view of the fan blade retractable fan of the embodiment of the utility model;

[0029] Figure 9 is a partial explosion structure schematic view of the fan blade retractable fan of the embodiment of the utility model (hides the mounting seat);

[0030] Figure 10 is another partial explosion structure schematic view of the fan blade retractable fan of the embodiment of the utility model (hides the mounting seat)。

[0031] Reference signs:

[0032] 110, intermediate connecting piece;120, fan blade mounting part;121, mounting column;1211, extension block;122, limiting part;130, fan blade;131, first through hole;132, third through hole;140, rotating piece;141, second mounting piece;1411, mounting rod;1412, fourth through hole;142, first mounting piece;1421, sleeve joint barrel;1422, first limiting protrusion;1423, mounting groove;

[0033] 210, base;220, front mounting seat;230, rear mounting seat;241, second fixing piece;242, support piece;243, first fixing piece;

[0034] 310, buckle; 320, through hole; 330, buckle hole;

[0035] 410, slot; 420, insertion rod;

[0036] 510, first mounting hook; 520, second mounting hook. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model will be described in further detail below with reference to the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.

[0038] Please see Figures 1-10 The utility model discloses a fan blade 130 retractable fan, including mounting seat, rotatable installation on the mounting seat on the fan blade 130 mounting bracket and install on the fan blade 130 mounting bracket on the fan blade 130, the fan blade 130 mounting bracket includes a plurality of fan blade installation part 120 and intermediate connecting piece 110, a plurality of fan blade installation part 120 evenly set up in the intermediate connecting piece 110 periphery, the fan blade 130 is rotatable through the rotator 140 and is arranged in the fan blade installation part 120, the fan blade 130 can rotate in the preset angle interval relative to the fan blade installation part 120.

[0039] The rotator 140 with the intermediate connecting piece 110 between setting has the resilience piece, and the resilience piece is used to make the fan blade 130 have the tendency of turning to the initial position.

[0040] In the embodiment, by setting the fan blade 130 to be rotatable relative to the fan blade installation part 120, the fan blade 130 can be driven by centrifugal force to rotate outward relative to the fan blade installation part 120 during the rotation of the intermediate connecting piece 110, thereby achieving the purpose of unfolding the fan blade 130. When the speed of the intermediate connecting piece 110 decreases, the elastic force of the resilience piece will drive the fan blade 130 to rotate inward, thereby achieving the purpose of retracting the fan blade 130. This can reduce the storage space for daily storage of the fan, facilitate transportation and transportation, and protect the fan blade 130 from being easily touched and broken.

[0041] The turning position of the fan blade 130 is related to the speed of the intermediate connecting piece 110 and the elastic coefficient of the resilience piece. As long as the contraction force of the resilience piece and the centrifugal force of the fan blade 130 are balanced, the fan blade 130 will not continue to rotate relative to the fan blade installation part 120. Therefore, when the fan is turned off, the speed of the intermediate connecting piece 110 can be controlled to decrease uniformly and slowly, so that the fan blade 130 will not be driven by the resilience piece to rebound instantaneously to the initial position. This avoids the fan blade 130 from being easily broken and also avoids excessive collision between the rotator 140 and the fan blade installation part 120, which affects the service life of the rotator 140.

[0042] The preset angle interval is an angle interval from the initial position to the radial direction.

[0043] Specifically, the intermediate connecting member 110 is driven to rotate, and the fan blade mounting portion 120 is driven to rotate, and the fan blade 130 is installed in the fan blade mounting portion 120, so that the fan blade 130 is gradually rotated outward under the driving of the fan blade mounting portion 120 and the centrifugal force, thereby achieving the purpose of unfolding the fan blade 130.

[0044] In an embodiment, the tail of the fan blade 130 is connected to the fan blade mounting portion 120 through the rotating member 140, and when the rotating speed of the intermediate connecting member 110 is fast enough, the centrifugal force of the fan blade 130 is greater than the pullback force (contraction force) of the elastic member, and the front part of the fan blade 130 will rotate outward under the action of the centrifugal force and be in the radial direction.

[0045] Of course, when the centrifugal force of the fan blade 130 is equal to the pullback force (contraction force) of the elastic member, the front part of the fan blade 130 can just rotate outward under the action of the centrifugal force and be in the radial direction.

[0046] In an embodiment, a motor can be arranged on the mounting seat, and the intermediate connecting member 110 is connected to the motor rotating shaft to drive the intermediate connecting member 110 to rotate.

[0047] Specifically, when the rotating speed of the intermediate connecting member 110 gradually decreases, the rotating member 140 is gradually rotated to the initial position under the driving of the elastic member, thereby driving the fan blade 130 to rotate inward, until the fan blade 130 is rotated to the initial position.

[0048] The initial position is determined by the setting position of the elastic member, the relative position of the elastic member on the intermediate connecting member 110 and the rotating member 140, and the initial position can be changed according to the actual situation.

[0049] In an embodiment, the fan blade mounting portion 120 can be arranged as 3-6.

[0050] In an embodiment, the fan blade mounting portion 120 is arranged in a circular array on the side of the intermediate connecting member 110.

[0051] In an embodiment, the fan blade mounting portion 120 is provided with a fan blade 130 mounting interval, the rotating member 140 is connected to the fan blade 130, and the rotating member 140 is rotatably installed in the fan blade 130 mounting interval.

[0052] The fan blade 130 mounting interval is provided with a limiting portion 122 for limiting the rotating angle of the rotating member 140.

[0053] In the embodiment, the limiting portion 122 is arranged in the leaf 130 mounting interval, the limiting portion 122 limits the rotating angle of the rotating member 140, so that the initial position of the leaf 130 is more controllable, and is not affected by the spring specification too much, and the final position of the leaf 130 can be controlled when the final position of the leaf 130 is not in the radial direction.

[0054] In an embodiment, a mounting column 121 is arranged in the middle of the leaf 130 mounting interval.

[0055] The rotating member 140 comprises a first mounting member 142, and a sleeve 1421 is arranged in the middle of the first mounting member 142.

[0056] The first mounting member 142 is rotatably sleeved on the mounting column 121 through the sleeve 1421, and the leaf 130 is mounted on the first mounting member 142.

[0057] In the embodiment, the first mounting member 142 can rotate relative to the mounting column 121 through the sleeving of the sleeve 1421, and the leaf 130 is mounted on the first mounting member 142, so that the leaf 130 can rotate relative to the mounting column 121.

[0058] Specifically, the leaf 130 is provided with a third through hole 132 corresponding to the sleeve 1421, and the leaf 130 is sleeved on the sleeve 1421 through the third through hole 132, so as to realize the mounting of the leaf 130 and the first mounting member 142.

[0059] In an embodiment, the rotating member 140 comprises a second mounting member 141, and the second mounting member 141 clamps and fixes the leaf 130 on the first mounting member 142.

[0060] In the embodiment, the second mounting member 141 is arranged, so that the first mounting member 142, the leaf 130 and the second mounting member 141 can be detachably mounted, the leaf 130 is clamped and fixed, and any part of the leaf 130, the first mounting member 142 and the second mounting member 141 can be replaced after being damaged, so that the maintenance cost is reduced.

[0061] In an embodiment, the first mounting member 142 on the side of the sleeve 1421 is provided with a plurality of mounting grooves 1423, the mounting head of the fan blade 130 is provided with a plurality of first through holes 131 corresponding to the mounting grooves 1423, the top of the mounting groove 1423 abuts against the first through hole 131, the second mounting member 141 is provided with a plurality of mounting rods 1411 corresponding to the mounting grooves 1423, the mounting rod 1411 is inserted into the mounting groove 1423 by penetrating the first through hole 131 from the side of the first through hole 131 away from the mounting groove 1423, so as to mount the second mounting member 141 on the first mounting member 142 and fix the fan blade 130.

[0062] In the embodiment, by providing the mounting grooves 1423 on the first mounting member 142, the mounting rods 1411 on the second mounting member 141, and the first through holes 131 on the fan blade 130, and corresponding arrangement of the three, the mounting rod 1411 on the second mounting member 141 can penetrate the first through hole 131 and be inserted into the mounting groove 1423 on the first mounting member 142, so as to drive the fan blade 130 to rotate and simultaneously achieve the preliminary positioning and fixing effect, so as to clamp the fan blade 130.

[0063] In a preferred embodiment, the top of the first mounting member 142 is designed to match the shape of the bottom of the fan blade 130, and the surface of the second mounting member 141 where the bottom of the mounting rod 1411 is located is also designed to match the shape of the top of the fan blade 130.

[0064] In the embodiment, when the bottom surface of the fan blade 130 (mounting head) is matched on the first mounting member 142, the mounting groove 1423 and the first through hole 131 are correspondingly aligned, at this time, the second mounting member 141 is adjusted to correspond to the matching of the top surface of the fan blade 130, the mounting rod 1411 is naturally aligned with the first through hole 131, and the first mounting member 142 and the second mounting member 141 can clamp and fix the fan blade 130 in the middle by penetrating the first through hole 131 and inserting into the mounting groove 1423. Since the clamping surfaces of the first mounting member 142 and the second mounting member 141 are respectively matched with the bottom surface and the top surface of the fan blade 130, the rotation of the fan blade 130 can be more stable.

[0065] In an embodiment, in order to position and facilitate installation, the mounting groove 1423, the mounting rod 1411, and the first through hole 131 all have a shape different from other shapes, so that the three can be quickly mounted together at the beginning of assembly without matching and adjusting the corresponding surfaces.

[0066] In an embodiment, a first notch is arranged on one side of the mounting slot 1423, a second notch is arranged on one side of the corresponding first through hole 131, and a protrusion is arranged on one side of the corresponding mounting rod 1411. During installation, the mounting rod 1411 with the protrusion, the first through hole 131 with the second notch, and the mounting slot 1423 with the first notch are aligned one by one, and the first mounting member 142 and the second mounting member 141 are combined, so as to achieve the purpose of clamping and fixing the fan blade 130 by the first mounting member 142 and the second mounting member 141.

[0067] In an embodiment, the mounting rod 1411 and the mounting slot 1423 are in interference fit.

[0068] In an embodiment, the mounting slot 1423 and the mounting rod 1411 are arranged correspondingly and are provided with no less than three groups.

[0069] In an embodiment, a first limiting protrusion 1422 is arranged on one side of the first mounting member 142, and the first limiting protrusion 1422 is arranged in the limiting portion 122.

[0070] The limiting portion 122 is a second through hole or a notch on the side of the installation range of the fan blade 130.

[0071] In the embodiment, the first limiting protrusion 1422 collides with the two side walls of the second through hole or the notch during rotation, and the rotation angle is limited.

[0072] In an embodiment, a multi-petal arc-shaped extension block 1211 is arranged on the top of the mounting column 121, a second limiting protrusion is arranged on the outer side of the extension block 1211, the first mounting member 142, the fan blade 130, and the second mounting member 141 are sequentially sleeved into the mounting column 121 from one end of the extension block 1211, and the second mounting member 141 is limited from being separated from the extension block 1211 by the second limiting protrusion.

[0073] In the embodiment, during installation, the extension block 1211 is pressed towards the middle, so that the first mounting member 142, the fan blade 130, and the second mounting member 141 are more easily entered into the mounting column 121 from one end of the extension block 1211. By arranging the second limiting protrusion, after the pressing on the extension block 1211 is released, the extension block 1211 rebounds to drive the second limiting protrusion to be clamped on the second mounting member 141, so as to avoid the second mounting member 141 from falling off, and the purpose of installing the rotating member 140 is achieved.

[0074] Specifically, a groove is arranged on the side of the second mounting member 141 facing the fan blade 130, a fourth through hole 1412 is arranged in the groove, and the second mounting member 141 can be sleeved on the extension block 1211 through the fourth through hole 1412. At this time, the groove is used for accommodating the top of the sleeving cylinder 1421, so that the second mounting member 141 can be attached to the top surface of the fan blade 130.

[0075] In an embodiment, the extension block 1211 is provided with two petals, and is symmetrically arranged with the diameter of the mounting column 121 as the axis of symmetry.

[0076] In an embodiment, the second mounting member 141 is provided with a first mounting hook 510, the intermediate connecting member 110 is provided with a second mounting hook 520, and the resilient member is arranged between the first mounting hook 510 and the second mounting hook 520.

[0077] In the embodiment, the resilient member detachably connects the second mounting member 141 and the intermediate connecting member 110, so that the resilient member can be replaced with different specifications and new ones.

[0078] In the embodiment, the positions of the first mounting hook 510 on the second mounting member 141 and the second mounting hook 520 on the intermediate connecting member 110 can be set according to actual conditions, and specifically, can be set according to the specifications, initial position, final position, and angle interval of the resilient member.

[0079] Of course, if the resilient force of the resilient member is large enough and the maximum rotating speed of the intermediate connecting member 110 during work is large enough, only the position of the limiting portion 122 and the angle interval thereof need to be set, and the positions of the first mounting hook 510 on the second mounting member 141 and the second mounting hook 520 on the intermediate connecting member 110 have more selectivity.

[0080] In an embodiment, the resilient member is a spring.

[0081] In an embodiment, the mounting seat includes a base 210, front and rear mounting seats 220 and 230, the fan blade 130 mounting frame is rotatably mounted on the rear mounting seat 230, the fan blade 130 mounting frame is located in the mounting gap between the front mounting seat 220 and the rear mounting seat 230, and the front mounting seat 220 and the rear mounting seat 230 are mounted on the base 210.

[0082] In the embodiment, the fan blade 130 is located in the mounting gap between the front mounting seat 220 and the rear mounting seat 230, which facilitates the unfolding of the fan blade 130 and protects the fan blade 130 from being easily broken by being touched after being retracted.

[0083] In an embodiment, the front mounting base 220 and the rear mounting base 230 each comprise a first fixing member 243, a second fixing member 241 and a supporting member 242, the first fixing member 243 and the supporting member 242 are connected through a plug-in assembly, the second fixing member 241 penetrates through the supporting member 242 from one end of the supporting member 242 and is snap-connected with the first fixing member 243, the first fixing member 243 is arranged inside the supporting member 242, and the second fixing member 241 is arranged outside the supporting member 242.

[0084] In the embodiment, the inside of the supporting member 242 is close to one side of the other mounting base, and the outside of the supporting member 242 is away from one side of the other mounting base, by arranging the front mounting base 220 and the rear mounting base 230 to be detachable, the motor and the light-emitting lamp and the like can be conveniently assembled in the supporting member 242, and maintenance and replacement are facilitated.

[0085] It can be understood that the front mounting base comprises the first fixing member 243, the second fixing member 241 and the supporting member 242, the rear mounting base also comprises the first fixing member 243, the second fixing member 241 and the supporting member 242, and the two are the same in the detachable structure.

[0086] The plug-in assembly comprises a plug rod 420 and a plug groove 410, the plug rod 420 is arranged on the first fixing member 243, and the plug groove 410 is arranged on the supporting member 242.

[0087] Or the first fixing member 243 is provided with the plug groove 410, and the plug rod 420 is arranged on the supporting member 242.

[0088] The snap connection is a conventional snap connection mode.

[0089] Specifically, the second fixing member 241 is provided with a snap member 310, the supporting member 242 is provided with a through hole 320 corresponding to the snap member 310, the snap member 310 penetrates through the through hole 320 and is connected and buckled in the snap groove or the snap hole 330 on the first fixing member 243.

[0090] In an embodiment, in order to increase the functionality of the fan and facilitate the anchor to supplement light when using the table, a light-emitting lamp is arranged on the front mounting base 220, and the first fixing member 243 is arranged to be transparent, thereby facilitating light transmission.

[0091] In the description of the utility model, it needs to be explained that, unless there is definite stipulation and limitation, the terms "mounting", "connection" and "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0092] In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two;The orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0093] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as above with a preferred embodiment, it is not intended to limit the utility model. Any skilled person in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the technical scheme of the utility model, and make equivalent embodiments with equivalent changes. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the utility model, which does not depart from the technical scheme content of the utility model, still belongs to the scope of the technical scheme of the utility model.

Claims

1. A fan with retractable blades, comprising a mounting base, a blade mounting frame rotatably mounted on the mounting base, and blades mounted on the blade mounting frame, characterized in that: the blade mounting frame comprises a plurality of blade mounting portions and an intermediate connecting member, the plurality of blade mounting portions are evenly arranged on the periphery of the intermediate connecting member, the blades are rotatably arranged in the blade mounting portions through a rotating member, and the blades can rotate relative to the blade mounting portions within a preset angle range; a resilient member is arranged between the rotating member and the intermediate connecting member, and the resilient member is used to make the blades have a tendency to return to an initial position; the mounting base comprises a base, a front mounting base and a rear mounting base arranged in front and back, the blade mounting frame is rotatably mounted on the rear mounting base, and the blade mounting frame is located in a mounting gap between the front mounting base and the rear mounting base, and the front mounting base and the rear mounting base are mounted on the base. 2.The fan according to claim 1, characterized in that: the blade mounting portion is provided with a blade mounting interval, the rotating member is connected to the blade, and the rotating member is rotatably mounted in the blade mounting interval; and the blade mounting interval is provided with a limiting portion for limiting the rotating angle of the rotating member. 3.The fan according to claim 2, characterized in that: a mounting column is arranged in the middle of the blade mounting interval; the rotating member comprises a first mounting member, and a sleeve is arranged in the middle of the first mounting member; the first mounting member is rotatably sleeved on the mounting column through the sleeve, and the blade is mounted on the first mounting member. 4.The fan according to claim 3, characterized in that: the rotating member comprises a second mounting member, and the second mounting member clamps and fixes the blade on the first mounting member. 5.The fan according to claim 4, characterized in that: a plurality of mounting grooves are arranged on the first mounting member on the periphery of the sleeve, a plurality of first through holes are arranged on the mounting head of the blade corresponding to the mounting grooves, the top of the mounting groove abuts against the first through hole, a plurality of mounting rods are arranged on the second mounting member corresponding to the mounting grooves, the mounting rods pass through the first through hole from the side of the first through hole away from the mounting groove and are inserted into the mounting groove, so as to achieve the purpose of mounting the second mounting member on the first mounting member and fixing the blade. 6.The fan according to any one of claims 3-5, characterized in that: a first limiting protrusion is arranged on one side of the first mounting member, and the first limiting protrusion is arranged in the limiting portion; and the limiting portion is a second through hole or a gap on the periphery of the blade mounting interval. 7.The fan according to any one of claims 4-5, characterized in that: a multi-petal arc-shaped extension block is arranged on the top of the mounting column, a second limiting protrusion is arranged on the outer side of the extension block, and the first mounting member, the blade and the second mounting member are sequentially sleeved into the mounting column from one end of the extension block, and the second limiting protrusion limits the second mounting member from being separated from the extension block. 8.The fan according to any one of claims 4-5, characterized in that: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The second mounting member is provided with a first mounting hook, the intermediate connecting member is provided with a second mounting hook, and the resilient member is arranged between the first mounting hook and the second mounting hook.

9. The fan of claim 1 wherein: The front mounting seat and the rear mounting seat each comprise a first fixing member, a second fixing member and a supporting member, the first fixing member and the supporting member are connected through a plug-in assembly, the second fixing member penetrates through the supporting member from one end of the supporting member and is buckled with the first fixing member, the first fixing member is arranged inside the supporting member, and the second fixing member is arranged outside the supporting member.

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