A fan structure

Abstract

The utility model discloses a fan structure, include: rotor includes shell seat, metal ring and magnetic ring, the inside of rotor shell seat is equipped with the installation cavity of cylinder, and the opposite both ends of installation cavity along the axial direction are equipped with first air baffle and second air baffle respectively, and metal ring is fixed in the installation cavity coaxially, and magnetic ring is fixed in the metal ring coaxially, and multiple magnetic steel are equipped with in magnetic ring along its periphery, stator includes stator shaft and coil winding, and coil winding is encircled by magnetic ring, and stator shaft is rotatably connected with first air baffle and second air baffle, multiple fan blades are connected in the outside of shell seat, when the airflow passes through the installation cavity, can take away the heat in installation cavity, thereby carries out effective cooling to stator, forms an organic whole with stator, rotor and fan blade, simplifies the installation structure of fan.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fan, especially a fan structure. BACKGROUND

[0002] The conventional fan is connected with the motor to use. Some existing fans are integrated with the rotor part as the rotating disc. In the use process, it is found that the integrated motor generates a large amount of heat, which makes the local temperature of the rotor too high to affect the magnetism of the internal magnetic steel. The conventional heat dissipation mode is to let the heat dissipate naturally, which cannot meet the heat dissipation demand of the integrated motor. SUMMARY

[0003] The utility model discloses at least one of the above technical problems in the related art is solved to some extent. To this end, the utility model provides a fan structure.

[0004] To achieve the above object, the technical scheme of the utility model is as follows:

[0005] The fan structure according to the first aspect embodiment of the utility model comprises:

[0006] The rotor comprises a shell seat, a metal ring and a magnetic ring, the inside of the rotor shell seat is provided with a cylindrical installation cavity, the first air baffle and the second air baffle are respectively arranged at the axially opposite two ends of the installation cavity, the metal ring is coaxially fixed in the installation cavity, the magnetic ring is coaxially fixed in the metal ring, and a plurality of magnetic steels are arranged in the magnetic ring along the circumferential direction of the magnetic ring.

[0007] The stator comprises a stator shaft and a coil winding, the coil winding is surrounded by the magnetic ring, and the stator shaft is rotationally connected with the first air baffle and the second air baffle.

[0008] The fan blade is connected to the outside of the shell seat.

[0009] When the rotor rotates relative to the stator, the external air can be sucked into the installation cavity through one of the first air baffle and the second air baffle and discharged from the installation cavity through the other.

[0010] The fan structure according to the utility model embodiment has at least the following beneficial effects: when the airflow passes through the installation cavity, the heat in the installation cavity can be taken away, thereby effectively cooling the stator; the stator, the rotor and the fan blade are integrated to simplify the installation structure of the fan.

[0011] According to some embodiments of the utility model, a plurality of air guide structures are sequentially distributed around the central axis on the first air deflector and the second air deflector, the air guide structure comprises a first plate part, a second plate part and a third plate part, the projections of the first plate part, the second plate part and the third plate part on the axial direction are sequentially distributed around the central axis of the mounting cavity, the first plate part and the third plate part are perpendicular to the central axis of the mounting cavity and are distributed in axial staggered mode, the second plate part is connected in inclined mode between the first plate part and the third plate part, the first plate part of one air guide structure is adjacent to the third plate part of another air guide structure and forms an air guide opening in axial direction.

[0012] According to some embodiments of the utility model, one of the first air deflector and the second air deflector is integrally formed on one end of the mounting cavity, and the other is detachably mounted on the other end of the mounting cavity.

[0013] According to some embodiments of the utility model, the fan blades are integrally formed on the circumferential outer wall of the shell seat.

[0014] According to some embodiments of the utility model, a plurality of the fan blades are fixed on the end of the shell seat through screws, the end of each fan blade cooperatively defines a connecting ring, and the connecting ring is arranged around the central axis of the shell seat.

[0015] According to some embodiments of the utility model, a plurality of connecting plates extending radially are arranged on the circumferential outer wall of the shell seat, a clamping hook and a guide strip are arranged on the connecting plate, the clamping hook protrudes from the connecting plate along the axial direction of the shell seat, and the guide strip extends along the radial direction of the shell seat, the end of the fan blade is provided with a plug-in cavity matched with the connecting plate, the plug-in cavity is provided with a sliding groove and a first clamping hole, the connecting plate can be inserted into the plug-in cavity, the guide strip is slidably connected in the sliding groove, and the clamping hook is clamped on the first clamping hole.

[0016] According to some embodiments of the utility model, the connecting plate and the plug-in cavity are locked through screws.

[0017] According to some embodiments of the utility model, the end outer wall of the shell seat extends outwardly in radial direction to form a convex edge, a plurality of second clamping holes sequentially distributed along the circumferential direction of the shell seat are arranged on the convex edge, the second clamping holes are arranged along the axial direction of the shell seat, a plurality of elastic clamping heads are arranged on the other end of the shell seat, the elastic clamping heads can be elastically stretched and contracted along the radial direction of the shell seat, one end of each fan blade is provided with a connecting part, the connecting part is provided with a clamping convex and a first clamping groove, the clamping convex can be inserted into the second clamping hole along the axial direction of the shell seat, and the elastic clamping head can be elastically inserted into and clamped in the first clamping groove.

[0018] According to some embodiments of the utility model, the convex edge is arranged on the end outer wall of the shell seat on the side of the first air deflector, the second air deflector is connected with a cover plate, a plurality of mounting grooves are defined between the second air deflector and the cover plate, the elastic clamping head is mounted in the mounting groove, the elastic clamping head comprises an elastic member and a clamping plate, and the elastic member exerts an elastic force on the clamping plate to make the clamping plate stretch out radially outward of the shell seat.

[0019] According to some embodiments of the utility model, the connecting part is provided with a clamping strip and a second clamping groove on both sides respectively, the clamping strip on one of the connecting parts is inserted into the second clamping groove of the other connecting part.

[0020] Additional aspects and advantages of the utility model will be in part apparent and in part pointed out hereinafter in the description of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0022] Figure 1 It is the structure exploded view of one kind of embodiment of fan structure;

[0023] Figure 2 It is the internal structure schematic view of fan structure;

[0024] Figure 3 It is the plan view of first air deflector / second air deflector;

[0025] Figure 4 It is the sectional view of first air deflector / second air deflector;

[0026] Figure 5 It is the structure exploded view of second embodiment of fan structure;

[0027] Figure 6 It is the structure exploded view of third embodiment of fan structure;

[0028] Figure 7 It is the structure exploded view of fourth embodiment of fan structure;

[0029] Figure 8 It is another view schematic view of Figure 7 ;

[0030] Figure 9 It is the partial structure exploded view of Figure 7 ;

[0031] Figure 10 It isFigure 7 a structure diagram of the shell base of the fan;

[0032] Figure 11 a structure diagram of the shell base of the fan; Figure 7 a structure diagram of the shell base of the fan;

[0033] Figure 12 a structure diagram of the shell base of the fan. Figure 7 a structure diagram of the shell base of the fan.

[0034] Reference signs: rotor 100, shell base 110, mounting cavity 111, metal ring 120, magnetic ring 130, connecting plate 140, clamping hook 141, guide strip 142, convex edge 150, second clamping opening 151, first air guide plate 210, second air guide plate 220, air guide structure 230, first plate part 231, second plate part 232, third plate part 233, air guide opening 234, stator 300, stator shaft 310, coil winding 320, fan blade 400, plug-in cavity 410, sliding groove 411, first clamping opening 412, connecting part 420, clamping convex part 421, first clamping groove 422, clamping strip 423, second clamping groove 424, connecting ring 500, elastic clamping head 600, elastic member 610, clamping plate 620, cover plate 700, mounting groove 710. DETAILED DESCRIPTION

[0035] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0036] The present application relates to a fan structure, comprising a rotor 100, a stator 300 and a fan blade 400.

[0037] As Figure 1 and Figure 2As shown, the rotor 100 comprises a housing 110, a metal ring 120 and a magnetic ring 130. The housing 110 can be cylindrical in shape, and a hollow cylindrical mounting cavity 111 is formed inside the housing 110. The two ends of the mounting cavity 111 in the axial direction are respectively provided with a first air baffle 210 and a second air baffle 220. In the direction shown, the axial direction of the mounting cavity 111 is the vertical direction, the first air baffle 210 is located at the lower end of the mounting cavity 111, and the second air baffle 220 is located at the upper end of the mounting cavity 111. The metal ring 120 is annular, the metal ring 120 is coaxially mounted in the mounting cavity 111, and the metal ring 120 is fastened to the inner wall of the mounting cavity 111 and can be fixed by gluing, welding or the like. The magnetic ring 130 is coaxially fixed in the metal ring 120, and a plurality of magnetic steels are arranged in the circumferential direction inside the magnetic ring 130. The stator 300 comprises a stator shaft 310 and a coil winding 320, and the coil winding 320 is mounted on the stator shaft 310. The coil winding 320 is arranged in the mounting cavity 111, and the magnetic ring 130 surrounds the coil winding 320. The stator shaft 310 is coaxially arranged in the mounting cavity 111 and passes through the first air baffle 210 and the second air baffle 220. The stator shaft 310, the first air baffle 210 and the second air baffle 220 can be connected by bearings. The stator shaft 310, the first air baffle 210 and the second air baffle 220 will not move relative to each other in the axial direction. A plurality of fan blades 400 are connected to the outside of the housing 110. In operation, the upper end of the stator shaft 310 can be fixed to the ceiling. The rotor 100 rotates relative to the stator 300, thereby driving the fan blades 400 to rotate to generate airflow. While the rotor 100 rotates, the first air baffle 210 and the second air baffle 220 will rotate with the rotor 100, and external air can be sucked into the mounting cavity 111 through one of the first air baffle 210 and the second air baffle 220 and discharged from the mounting cavity 111 through the other. For example, external air flows into the mounting cavity 111 through the first air baffle 210, and then the airflow is discharged outward from the second air baffle 220. Alternatively, external air flows into the mounting cavity 111 through the second air baffle 220, and then the airflow is discharged outward from the first air baffle 210. When the airflow passes through the mounting cavity 111, it can carry away the heat in the mounting cavity 111, thereby effectively cooling the stator 300. The stator 300, the rotor 100 and the fan blades 400 are integrated, simplifying the mounting structure of the fan.

[0038] In some embodiments of the present application, Figure 3 and Figure 4As shown, the first air deflector 210 and the second air deflector 220 are each provided with a plurality of air deflection structures 230, which are sequentially arranged around the central axis of the first air deflector 210 / second air deflector 220. The air deflection structure 230 includes a first plate portion 231, a second plate portion 232, and a third plate portion 233. The projections of the first plate portion 231, the second plate portion 232, and the third plate portion 233 on the axial direction are sequentially arranged around the central axis of the mounting cavity 111. That is, in the top view or the bottom view, the first plate portion 231, the second plate portion 232, and the third plate portion 233 are sequentially arranged along the circumferential direction of the first air deflector 210 / second air deflector 220. The first plate portion 231 and the third plate portion 233 are perpendicular to the central axis of the mounting cavity 111, that is, the first plate portion 231 and the third plate portion 233 are horizontally arranged, and the first plate portion 231 and the third plate portion 233 are arranged in an axial staggered manner. The height of the first plate portion 231 is lower than the height of the third plate portion 233, and the third plate portion 233 and the first plate portion 231 are arranged in an up-down staggered manner. The second plate portion 232 is connected between the first plate portion 231 and the third plate portion 233 in an inclined manner. Between two adjacent air deflection structures 230, the first plate portion 231 of one air deflection structure 230 is arranged adjacent to the third plate portion 233 of another air deflection structure 230, and the first plate portion 231 of one air deflection structure 230 is lower than the third plate portion 233 of another air deflection structure 230, and the two are spaced apart in the axial direction to form an air deflection opening 234. When the rotor 100 rotates, the first air deflector 210 and the second air deflector 220 will rotate, and during the rotation process, external air will flow into the mounting cavity 111 from the corresponding air deflection opening 234 of the first air deflector 210, and the airflow in the mounting cavity 111 will flow out from the corresponding air deflection opening 234 of the second air deflector 220, thereby forming a convection and accelerating the dissipation of heat in the mounting cavity 111.

[0039] Among them, one of the first air deflector 210 and the second air deflector 220 is integrally formed on one end of the mounting cavity 111, and the other is detachably mounted on the other end of the mounting cavity 111. Figure 1 As shown, in this embodiment, the first air deflector 210 is integrally formed on the lower end of the mounting cavity 111, and the second air deflector 220 is fixed on the upper end of the mounting cavity 111 as an independent component through screw locking or the like.

[0040] Among them, the mounting or forming mode of the fan blade 400 on the shell seat 110 has multiple modes.

[0041] One of them is, as shown, Figure 1 The fan blade 400 is integrally formed on the circumferential outer wall of the shell seat 110, and the fan blade 400 does not need to be independently mounted, which can effectively improve the installation efficiency of the fan structure during assembly.

[0042] It can also be, as shown, Figure 6As shown, the plurality of fan blades 400 are directly fixed on the end of the shell base 110 by screws. The end of each fan blade 400 connected with the shell base 100 is provided with an arc segment, and the arc segments are sequentially matched to define a connecting ring 500. The connecting ring 500 is arranged around the central axis of the shell base 110, and a through hole is formed at the center of the connecting ring 500 to avoid the first air deflector 210 or the second air deflector 220.

[0043] Further, as shown in the drawings, Figure 5 As shown, a plurality of connecting plates 140 extending radially are arranged on the circumferential outer wall of the shell base 110. The connecting plate 140 is provided with a clamping hook 141 and a guide strip 142. The clamping hook 141 is upwardly protruding and formed on the connecting plate 140 along the axial direction of the shell base 110. The guide strip 142 extends along the radial direction of the shell base 110. One or more guide strips 142 can be arranged. When a plurality of guide strips 142 are arranged, the guide strips 142 are parallel to each other. The end of the fan blade 400 is provided with a plug-in cavity 410 adapted to the connecting plate 140. The plug-in cavity 410 is provided with a sliding groove 411 and a first clamping hole 412. When the fan blade 400 is installed, the connecting plate 140 can be inserted into the plug-in cavity 410, and the guide strip 142 is slidably connected in the sliding groove 411. The assembly of the connecting plate 140 and the plug-in cavity 410 is guided by the cooperation of the guide strip 142 and the sliding groove 411. The clamping hook 141 is clamped on the first clamping hole 412 after extending into the plug-in cavity 410. The cooperation of the clamping hook 141 and the first clamping hole 412 can limit the fan blade 400 from being separated from the shell base 110 along the radial direction. The cooperation of the guide strip 142 and the sliding groove 411 can also apply a pushing force to the fan blade 400 when the rotor 100 rotates, so that the fan blade 400 rotates synchronously with the shell base 110. By using the connecting plate 140 and the plug-in cavity 410, the fan blade 400 can be quickly positioned and preassembled on the shell base 110. Further, the connecting plate 140 and the plug-in cavity 410 are locked by screws to ensure that the fan blade 400 is stably connected to the shell base 110 during rotation.

[0044] Further, as shown in the drawings, Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11As shown, a protruding edge 150 is arranged on the outer wall of the lower end of the shell seat 110, and extends outward along the radial direction of the shell seat 110. The protruding edge 150 is in the shape of a ring. A plurality of second clamping holes 151 are arranged on the protruding edge 150 in sequence along the circumferential direction of the shell seat 110. The second clamping holes 151 are arranged along the axial direction of the shell seat 110. The second clamping holes 151 can penetrate the protruding edge 150 along the up-down direction. A plurality of elastic clamping heads 600 are arranged on the upper end of the shell seat 110. The elastic clamping heads 600 can elastically expand and contract along the radial direction of the shell seat 110. In the normal state, the elastic clamping heads 600 are kept in the elastically expanded position. One end of each of the blades 400 is provided with a connecting portion 420. The connecting portion 420 can be in the shape of an arc plate that is adapted to the shape of the outer wall of the shell seat 110. The connecting portion 420 is provided with a clamping protrusion 421 and a first clamping groove 422. The clamping protrusion 421 is arranged on the lower side of the connecting portion 420, and the first clamping groove 422 is arranged on the upper portion of the connecting portion 420. During installation, the clamping protrusion 421 is inserted into the second clamping hole 151 along the axial direction of the shell seat 110. Then, the upper portion of the connecting portion 420 is close to the elastic clamping head 600. The elastic clamping head 600 is retracted, and then the connecting portion 420 is close to the outer wall of the shell seat 110. The elastic clamping head 600 is released, and the elastic clamping head 600 is elastically reset and inserted into the first clamping groove 422. The elastic clamping head 600 is clamped in the first clamping groove 422 and kept in the current state. The cooperation of the elastic clamping head 600, the clamping protrusion 421 and the connecting portion 420 can quickly position and install the blade 400 on the shell seat 110. The connecting portion 420 and the shell seat 110 can be further locked and fixed by screws.

[0045] Specifically, the protruding edge 150 is arranged on the outer wall of the end of the shell seat 110 on the side of the first air deflector 210. The second air deflector 220 is connected with a cover plate 700. The cover plate 700 is fixed with the second air deflector 220 by screws. A plurality of installation grooves 710 are defined between the second air deflector 220 and the cover plate 700. The elastic clamping head 600 is installed in the installation groove 710. The elastic clamping head 600 includes an elastic member 610 and a clamping plate 620. The elastic member 610 can be a spring. One end of the elastic member 610 abuts against the groove wall of the installation groove 710, and the other end abuts against the clamping plate 620. The elastic member 610 applies an elastic force to the clamping plate 620 to make the clamping plate 620 expand outward along the radial direction of the shell seat 110. The clamping plate 620 expands and contracts relative to the installation groove 710 under the action of the elastic member 610.

[0046] Further, the left and right sides of the connecting part 420 are respectively provided with a second clamping groove 424 and a clamping strip 423. In the embodiment, three fan leaves 400 are installed on the shell seat 110. The clamping strip 423 on the right side of one of the connecting parts 420 between two adjacent connecting parts 420 is inserted into the second clamping groove 424 on the left side of the other connecting part 420. That is, the connecting parts 420 are sequentially connected through the cooperation of the second clamping groove 424 and the clamping strip 423, and the connecting parts 420 are cooperatively surrounded by the shell seat 110, so that the connecting parts 420 can be limited from being separated from the shell seat 110 along the radial direction.

[0047] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0048] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0049] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include the first and second features directly contacting, or can include the first and second features not directly contacting but contacting through another feature between them. Moreover, the first feature "on", "above" and "on top of" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "under", "below" and "underneath" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0051] In the description of the present application, the description referring to the terms "some embodiments" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0052] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A fan structure characterized by, The utility model relates to a fan, which comprises: a rotor (100) comprising a housing (110), a metal ring (120) and a magnetic ring (130), the rotor (100) housing (110) is internally provided with a cylindrical mounting cavity (111), the mounting cavity (111) is provided with a first baffle (210) and a second baffle (220) at axially opposite ends respectively, the metal ring (120) is coaxially fixed in the mounting cavity (111), the magnetic ring (130) is coaxially fixed in the metal ring (120), and a plurality of magnetic steels are arranged in the magnetic ring (130) along the circumferential direction thereof; a stator (300) comprising a stator shaft (310) and a coil winding (320), the coil winding (320) is surrounded by the magnetic ring (130), and the stator shaft (310) is rotationally connected with the first baffle (210) and the second baffle (220); a plurality of fan blades (400) connected to the outside of the housing (110); wherein when the rotor (100) rotates relative to the stator (300), external air can be sucked into the mounting cavity (111) from one of the first baffle (210) and the second baffle (220) and discharged from the mounting cavity (111) through the other.

2. The fan structure according to claim 1, characterized by: The first baffle (210) and the second baffle (220) are each provided with a plurality of air guide structures (230) distributed in sequence about a central axis, the air guide structure (230) comprises a first plate portion (231), a second plate portion (232) and a third plate portion (233), the projections of the first plate portion (231), the second plate portion (232) and the third plate portion (233) in the axial direction are distributed in sequence about the central axis of the mounting cavity (111), the first plate portion (231) and the third plate portion (233) are perpendicular to the central axis of the mounting cavity (111) and are distributed in axial displacement, the second plate portion (232) is connected in an inclined manner between the first plate portion (231) and the third plate portion (233), the first plate portion (231) of one air guide structure (230) is adjacent to the third plate portion (233) of another air guide structure (230) between adjacent two air guide structures (230), and an air guide opening (234) is formed in axial spacing.

3. The fan structure according to claim 1 or 2, characterized by: One of the first baffle (210) and the second baffle (220) is integrally formed on one end of the mounting cavity (111), and the other is detachably mounted on the other end of the mounting cavity (111).

4. The fan structure according to claim 1, characterized by: The fan blades (400) are integrally formed on the circumferential outer wall of the housing (110).

5. The fan structure according to claim 1, characterized by: A plurality of fan blades (400) are fixed on the end portion of the housing (110) by screws, the end portions of the fan blades (400) are cooperatively connected to define a connecting ring (500) arranged about the central axis of the housing (110).

6. The fan structure according to claim 1, characterized by: The circumferential outer wall of the shell base (110) is provided with a plurality of connecting plates (140) extending radially, the connecting plates (140) are provided with hooks (141) and guide strips (142), the hooks (141) protrude from the connecting plates (140) in the axial direction of the shell base (110), and the guide strips (142) extend in the radial direction of the shell base (110). The end of the fan blade (400) is provided with a plug-in cavity (410) matched with the connecting plate (140), the plug-in cavity (410) is provided with a sliding groove (411) and a first clamping hole (412), the connecting plate (140) can be inserted into the plug-in cavity (410), the guide strip (142) is slidably connected in the sliding groove (411), and the hook (141) is clamped on the first clamping hole (412).

7. The fan structure according to claim 6, characterized by: The connecting plate (140) and the plug-in cavity (410) are locked by screws.

8. The fan structure of claim 1, wherein: The end outer wall of the shell base (110) extends outward in the radial direction to form a protruding edge (150), the protruding edge (150) is provided with a plurality of second clamping holes (151) distributed in the circumferential direction of the shell base (110) in sequence, the second clamping holes (151) are formed in the axial direction of the shell base (110), the other end of the shell base (110) is provided with a plurality of elastic clamping heads (600), the elastic clamping heads (600) can be elastically stretched in the radial direction of the shell base (110), one end of each fan blade (400) is provided with a connecting portion (420), the connecting portion (420) is provided with a clamping protrusion (421) and a first clamping groove (422), the clamping protrusion (421) can be inserted into the second clamping hole (151) in the axial direction of the shell base (110), and the elastic clamping head (600) can be elastically inserted into and clamped in the first clamping groove (422).

9. The fan structure according to claim 8, characterized by: The protruding edge (150) is arranged on the end outer wall of the shell base (110) on the side of the first air deflector (210), the second air deflector (220) is connected with a cover plate (700), a plurality of mounting grooves (710) are defined between the second air deflector (220) and the cover plate (700), the elastic clamping head (600) is mounted in the mounting groove (710), and the elastic clamping head (600) comprises an elastic member (610) and a clamping plate (620). The elastic member (610) applies an elastic force to the clamping plate (620) to make the clamping plate (620) extend outward in the radial direction of the shell base (110).

10. The fan structure according to claim 8 or 9, characterized in that: The connecting portion (420) is provided with a clamping strip (423) and a second clamping groove (424) on both sides, respectively, the clamping strip (423) on one of the connecting portions (420) is inserted into the second clamping groove (424) of the other connecting portion (420) between the two adjacent connecting portions (420).

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