Fan blade connecting structure and fan thereof

Abstract

The invention discloses a fan blade connecting structure and a fan thereof, and relates to the technical field of cooling fans, the fan blade connecting structure comprises a first shell, a second shell and blades, the first shell is arranged outside a rotor of the fan, a plurality of blades are connected outside the first shell, and a matching groove is formed in the first shell; one end of the second shell is arranged in the matching groove in a matched mode, the other end of the second shell is fixedly connected to the movable end of the adjusting assembly, the fixed end of the adjusting assembly is fixedly connected to the upper portion of a stator of the fan, the first shell is movably connected with the rotor, and a plurality of limiting assemblies are arranged at the edge positions of the first shell and the second shell. A first connecting part and a second connecting part are arranged at the two ends of the blade respectively, the first connecting part is connected to one end of the first shell in the axial direction through a shaft, the second connecting part is arranged in the limiting assembly in a matched mode, the position of the second connecting part in the blade outside the first shell is adjusted through the adjusting assembly, and therefore the airflow direction of the fan is adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation fans, and in particular to a fan blade connection structure and a fan thereof. Background Art

[0002] A host case of a computer device is often equipped with multiple cooling fans. Since the sizes of the cases are different, the sizes of the cooling ports will be different. The sizes of the cooling fans of the host case must correspond to the specified sizes of the cooling ports of the case. It is impossible to take into account the use requirements of different sizes of cooling ports of the case. This is because after the processing of most cooling fans, the positions of their blades are fixed and cannot be adjusted. When the fans are working, the direction of the airflow formed by the blades is fixed and cannot be adjusted, so that they cannot take into account the use of different sizes of cooling ports of the case.

[0003] Moreover, in existing cooling fans, the space where the rotor and stator are located is generally in a closed shell space, and the rotor and stator will generate heat energy when the fan is working. The generated heat energy can only be conducted to the shell and then dissipated to the outside through the shell. After the computer is used for a long time, a large amount of heat energy is easily accumulated in the shell space where the rotor and stator are located, which can easily cause the cooling fan to burn out. Summary of the invention

[0004] In view of the technical defects existing in the background technology, the present invention proposes a fan blade connection structure and a fan thereof, which solves the above technical problems and meets the actual needs. The specific technical solution is as follows: The present invention discloses a fan blade connection structure, which comprises a first shell, a second shell and blades, the first shell being arranged outside a rotor of the fan, a plurality of blades being connected to the outside of the first shell, a matching groove being arranged inside the first shell, one end of the second shell being matched in the matching groove, the other end of the second shell being fixedly connected to a movable end of an adjusting component, the fixed end of the adjusting component being fixedly connected above the stator of the fan, the first shell being movably connected to the rotor, a plurality of limiting components being arranged at edge positions of the first shell and the second shell, a first connecting portion and a second connecting portion being arranged at two ends of the blade respectively, the first connecting portion being axially connected to one end of the first shell in an axial direction, the second connecting portion being matched in the limiting component, a plurality of first sliding grooves being circumferentially arranged at an outer edge position of the shell body of the rotor, a plurality of sliding portions being circumferentially arranged at an inner edge of the first shell, and the first shell realizing bidirectional movement in the direction of the rotor axis through the matching of the sliding portion and the first sliding groove.

[0005] As a further embodiment of the present invention, the adjusting assembly includes a fixed part and a rotating part, the top of the stator is connected to a positioning column in an axial connection manner, the fixed part is fixedly connected to the top of the positioning column, the rotating part is cooperated with the outside of the positioning column below the fixed part, the rotating part is fixedly connected to the other end of the second shell, the end face of the fixed part near the rotating part is provided with a plurality of first positioning blocks along the circumference of the fixed part, the end face of the rotating part near the fixed part is provided with a plurality of second positioning blocks along the circumference of the fixed part, the outside of the positioning column between the fixed part and the rotating part is cooperated with a first spring, and the bottom end of the first spring is fixedly connected to the end face of the rotating part.

[0006] As a further embodiment of the present invention, a plurality of the first positioning blocks are distributed on the end surface of the fixed part in an equidistant manner, and a plurality of the second positioning blocks are distributed on the end surface of the rotating part in an equidistant manner, the projection formed by the first positioning block on a plane perpendicular to the axis of the fixed part is fan-shaped, both ends of the first positioning block are provided with a first inclined surface, the middle part of the first positioning block is a first plane parallel to the axial end surface of the fixed part, the projection formed by the second positioning block on a plane perpendicular to the axis of the rotating part is fan-shaped, both ends of the second positioning block are provided with a second inclined surface, and the middle part of the second positioning block is a second plane parallel to the axial end surface of the rotating part.

[0007] As a further embodiment of the present invention, a plurality of the first positioning blocks are distributed on the end surface of the fixed part in an equidistant manner, and a plurality of the second positioning blocks are distributed on the end surface of the rotating part in an equidistant manner, the interval between two of the first positioning blocks is the same as the size of the second positioning block, and the interval between two of the second positioning blocks is the same as the size of the first positioning block, and the projection formed by the first positioning block on the plane perpendicular to the axial direction of the fixed part is fan-shaped, and both ends of the first positioning block transition to the middle end surface through right angles, and both ends of the second positioning block transition to the middle end surface through right angles.

[0008] As a further embodiment of the present invention, the limiting assembly includes a second slide groove and a third slide groove, the second slide groove is arranged on the wall surface at the edge of the first shell, the first projection of the second slide groove on the plane perpendicular to the axis of the first shell is an arc, the second projection of the second slide groove on the plane parallel to the axis of the first shell is an inclined straight line, the third slide groove is arranged on the wall surface at the edge of the second shell and is opposite to the second slide groove, the third projection of the third slide groove on the plane parallel to the axis of the second shell is a straight line, the third projection and the second projection have an intersection on the plane parallel to the central axis of the fan, and the second connecting portion is through-fitted into the second slide groove and the third slide groove at the intersection position.

[0009] As a further embodiment of the present invention, the second connecting portion is a column, and an end portion of the second connecting portion away from the blade side is provided with a limiting block extending in a direction away from the central axis of the second connecting portion.

[0010] As a further embodiment of the present invention, the sliding portion is a protrusion extending toward the direction close to the central axis of the first shell, the projection formed by the sliding portion on a plane perpendicular to the central axis of the first shell is a fan-shaped, the projection formed by the first slide groove on a plane perpendicular to the central axis of the shell is the same as the projection formed by the sliding portion on a plane perpendicular to the central axis of the first shell, and the first slide groove extends and is distributed in the axial direction of the shell and passes through one of the axial ends of the shell.

[0011] As a further embodiment of the present invention, a portion of the blade close to the first connection portion is bent in a direction opposite to a direction of a portion of the blade close to the second connection portion.

[0012] The present invention also discloses a fan, comprising a positioning frame and the above-mentioned fan blade connection structure, wherein a connecting seat is provided in the middle of the positioning frame, a heat dissipation base is provided on the surface of the connecting seat, an end of the stator away from the limiting assembly is fixedly connected to the middle of the heat dissipation base, a surface of the heat dissipation base located on the outer side of the stator is provided with a plurality of heat dissipation fins, and a heat dissipation channel is formed between two of the heat dissipation fins.

[0013] The beneficial effects of the present invention are as follows: by adjusting the second connecting part in the blade to the position outside the first shell through the adjusting component, the airflow direction of the fan is adjusted to adapt to the size of the heat dissipation port of different chassis; the limiting component neither affects the position adjustment operation of the blade nor can the connection between the blade and the first shell and the second shell remain unchanged; and the adjusting component will adjust the position of the first shell and the second shell outside the rotor, so that the first shell is away from one end of the rotor and the stator, so that the space where the rotor and stator of the fan are located enters the range of action of the fan airflow, thereby bringing out the heat energy at the rotor and stator of the fan, and achieving the effect of dissipating heat inside the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the internal structure of a fan with the fan blade connection structure.

[0015] Figure 2 This is a schematic diagram of the external structure of the fan blade connection structure.

[0016] Figure 3 Schematic diagram of the blade structure.

[0017] Figure 4 This is a schematic diagram of the fan blade connection structure after the blade position is adjusted.

[0018] Figure 5 Schematic diagram of the structure of the first regulating component.

[0019] Figure 6 This is a schematic diagram of the first adjustment component when it reaches its maximum length in the direction of the positioning column.

[0020] Figure 7 This is a schematic diagram of the first adjustment component when it reaches its minimum length in the direction of the positioning column.

[0021] Figure 8 Schematic diagram of the structure of the second regulating component.

[0022] Fig. 9 This is a schematic diagram of the second adjustment component when it reaches its maximum length in the direction of the positioning column.

[0023] Fig.10 This is a schematic diagram of the second adjustment component when it reaches its minimum length in the direction of the positioning column.

[0024] Fig.11 The structure diagram of the limiter assembly Figure 1 .

[0025] Fig.12 The structure diagram of the limiter assembly Figure 2 .

[0026] Fig.13 It is a schematic diagram of the sliding part being fitted in the first sliding groove.

[0027] Fig.14 It is a schematic diagram of the components of a fan with the fan blade connection structure.

[0028] Fig.15 This is a schematic diagram of the first state of the fan.

[0029] Fig.16 Schematic diagram of the second state of the fan.

[0030] In the figure, 1, first shell; 11, matching groove; 12, sliding part; 2, second shell; 3, blade; 31, first connecting part; 32, second connecting part; 4, rotor; 41, shell; 411, first slide groove; 5, adjustment component; 51, fixing member; 52, rotating member; 53, positioning column; 54, first positioning block; 541, first inclined surface; 542, first plane; 55, second positioning block; 551, second inclined surface; 552, second plane; 56, first spring; 6, stator; 7, limit assembly; 71, second slide groove; 72, third slide groove; 73, intersection; 74, limit block; 8, positioning frame; 81, connecting seat; 9, heat dissipation base; 91, heat dissipation fin; 911, heat dissipation channel. DETAILED DESCRIPTION

[0031] The present invention discloses a fan blade connection structure, such as Figures 1 to 4 As shown in combination, the fan blade 3 connection structure includes a first shell 1, a second shell 2 and a blade 3, the first shell 1 is arranged outside the rotor 4 of the fan, a plurality of blades 3 are connected to the outside of the first shell 1, a matching groove 11 is arranged inside the first shell 1, one end of the second shell 2 is matched in the matching groove 11, and the other end of the second shell 2 is fixedly connected to the movable end of the adjustment component 5, and the fixed end of the adjustment component 5 is fixedly connected above the stator 6 of the fan, the first shell 1 is movably connected to the rotor 4, and a plurality of limiting components 7 are arranged at the edge positions of the first shell 1 and the second shell 2, and a first connecting portion 31 and a second connecting portion 32 are respectively arranged at both ends of the blade 3, the first connecting portion 31 is axially connected to one end of the first shell 1 in the axial direction, and the second connecting portion 32 is matched in the limiting component 7, a plurality of first sliding grooves 411 are circumferentially arranged at the outer edge position of the shell 41 of the rotor 4, and a plurality of sliding portions 12 are circumferentially arranged at the inner edge of the first shell 1, and the first shell 1 realizes bidirectional movement in the axial direction of the rotor 4 through the cooperation between the sliding portion 12 and the first sliding groove 411.

[0032] It should be noted that: by manually pulling the first shell 1 upward and rotating the second shell 2, the adjustment component 5 is used to adjust the position of the second connection part 32 in the blade 3 outside the first shell 1, so as to adjust the airflow direction of the fan, change the flow direction of the airflow at the air outlet end of the fan, so as to bring the heat energy out from the air outlet end of the fan in the specified gas flow direction, so that the fan can adapt to the heat dissipation port size of different chassis; the limit components 7 distributed on the first shell 1 and the second shell 2 neither affect the position adjustment operation of the blade 3, but also keep the connection between the blade 3 and the first shell 1 and the second shell 2 unchanged, so that the position of the blade 3 can be adjusted without causing the second connection part 32 of the blade 3 to loosen.

[0033] It needs to be further explained that if Figure 1 , Figure 5 and Figure 8As shown in combination, the adjustment assembly 5 includes a fixed member 51 and a rotating member 52, the top of the stator 6 is connected to a positioning column 53 in an axial connection manner, the fixed member 51 is fixedly connected to the top of the positioning column 53, the rotating member 52 is fitted outside the positioning column 53 below the fixed member 51, the rotating member 52 is fixedly connected to the other end of the second shell 2, the end surface of the fixed member 51 near the rotating member 52 is provided with a plurality of first positioning blocks 54 along the circumference of the fixed member 51, the end surface of the rotating member 52 near the fixed member 51 is provided with a plurality of second positioning blocks 55 along the circumference of the fixed member 51, the positioning column 53 between the fixed member 51 and the rotating member 52 is fitted with a first spring 56, and the bottom end of the first spring 56 is fixedly connected to the end surface of the rotating member 52.

[0034] When it is necessary to adjust the position of the second connecting portion 32 in the blade 3 outside the first housing 1, the second housing 2 can be manually operated to move in the axial direction of the positioning column 53 and rotate the second housing 2, so that the rotating member 52 is moved in the axial direction of the positioning column 53 and rotated, so that the rotating member 52 is also moved and rotated in the axial direction of the positioning column 53. At the same time, the position of the second positioning block 55 relative to the first positioning block 54 is also changed. When the second positioning block 55 and the first positioning block 54 are in a state where the two are facing each other in the axial direction of the positioning column 53 or the two are in an intercalation type fit When the fan is in the state of being moved, the position of the second positioning block 55 in the axial direction of the positioning column 53 will be different, and then the sliding of the sliding part 12 in the first sliding groove 411 will change the position of the first shell 1 in the axial direction of the positioning column 53, and then the position of the second connecting part 32 is limited by the position limiting function of the limiting component 7, so that the blade 3 rotates with the first connecting part 31 as the rotation center, and finally the first spring 56 acts on the rotating part 52 to fix the position of the moving rotating part 52, thereby realizing the adjustment of the position of the blade 3 outside the first shell 1, and then changing the airflow direction of the fan.

[0035] Specifically, Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown in the figure, a plurality of first positioning blocks 54 are distributed on the end surface of the fixed member 51 in an equidistant manner, and a plurality of second positioning blocks 55 are distributed on the end surface of the rotating member 52 in an equidistant manner. The projection formed by the first positioning block 54 on a plane perpendicular to the axis of the fixed member 51 is fan-shaped. Both ends of the first positioning block 54 are provided with a first inclined surface 541. The middle part of the first positioning block 54 is a first plane 542 parallel to the axial end surface of the fixed member 51. The projection formed by the second positioning block 55 on a plane perpendicular to the axis of the rotating member 52 is fan-shaped. Both ends of the second positioning block 55 are provided with a second inclined surface 551. The middle part of the second positioning block 55 is a second plane 552 parallel to the axial end surface of the rotating member 52.

[0036] When the second housing 2 is adjusted manually, the first inclined surface 541 will be tangent to the second inclined surface 551 and move relative to each other, so that the second plane 552 on the second positioning block 55 moves toward the first plane 542. When the second plane 552 moves to a state where it is directly opposite to the first plane 542 and the second inclined surface 551 is not tangent to the first inclined surface 541, the length of the entire adjustment component 5 in the axial direction of the positioning column 53 reaches the maximum, and the projection area of ​​the blade 3 in the plane parallel to the axial direction of the positioning column 53 is the largest. Therefore, when the blade 3 of the fan rotates, the airflow at the air outlet of the fan The flow direction will be on an extension line deviating from the center of the fan to the outside to adapt to the use of a chassis with large-sized heat dissipation ports; and when the second plane 552 moves to a state where it is directly opposite to the end face of the fixing member 51 between the two first positioning blocks 54 and the second inclined surface 551 is tangent to the first inclined surface 541, the length of the entire adjustment component 5 in the axial direction of the positioning column 53 is minimized, and the projection area formed by the blade 3 in the plane parallel to the axial direction of the positioning column 53 is minimized. Therefore, when the blade 3 of the fan rotates, the flow direction of the airflow at the air outlet end of the fan will be on an extension line close to the center of the fan to adapt to the use of a chassis with small-sized heat dissipation ports.

[0037] Specifically, Figure 1 , Figure 4 , Figure 8 , Fig. 9 and Fig.10As shown in the combination, a plurality of first positioning blocks 54 are distributed on the end surface of the fixed member 51 in an equidistant manner, and a plurality of second positioning blocks 55 are distributed on the end surface of the rotating member 52 in an equidistant manner. The interval between two of the first positioning blocks 54 is the same as the size of the second positioning block 55, and the interval between two of the second positioning blocks 55 is the same as the size of the first positioning block 54. The projection of the first positioning block 54 on the plane perpendicular to the axial direction of the fixed member 51 is fan-shaped, and both ends of the first positioning block 54 transition to the middle end surface through a right angle, and both ends of the second positioning block 55 transition to the middle end surface through a right angle.

[0038] Among them, when the second shell 2 is adjusted by manual operation, the second plane 552 on the second positioning block 55 is moved by the rotating member 52 moving and rotating in the axial direction of the positioning column 53. When the second plane 552 moves to face the first plane 542, the length of the entire adjustment component 5 in the axial direction of the positioning column 53 reaches the maximum, and the projection area formed by the blade 3 on the plane parallel to the axial direction of the positioning column 53 is the largest. Therefore, when the blade 3 of the fan rotates, the airflow direction of the air outlet of the fan will be on the extension line deviating from the center of the fan to the outside, so as to adapt to the use of the chassis with large-sized heat dissipation ports; when the second plane 552 is moved to the interval between the two first positioning blocks 54 by the rotating member 52 moving and rotating in the axial direction of the positioning column 53, the length of the entire adjustment component 5 in the axial direction of the positioning column 53 reaches the minimum, and the projection area formed by the blade 3 on the plane parallel to the axial direction of the positioning column 53 is the smallest. Therefore, when the blade 3 of the fan rotates, the airflow direction of the air outlet of the fan will be on the extension line close to the center of the fan, so as to adapt to the use of the chassis with small-sized heat dissipation ports.

[0039] It needs to be further explained that if Figure 1 , Fig.12 and Fig.13 As shown in combination, the limiting assembly 7 includes a second slide groove 71 and a third slide groove 72, the second slide groove 71 is arranged on the wall surface at the edge of the first shell 1, the first projection of the second slide groove 71 formed on a plane perpendicular to the axis of the first shell 1 is an arc, the second projection of the second slide groove 71 formed on a plane parallel to the axis of the first shell 1 is an inclined straight line, the third slide groove 72 is arranged on the wall surface at the edge of the second shell 2 and is opposite to the second slide groove 71, the third projection of the third slide groove 72 formed on a plane parallel to the axis of the second shell 2 is a straight line, the third projection and the second projection have an intersection 73 on a plane parallel to the central axis of the fan, and the second connecting portion 32 is through-fitted into the second slide groove 71 and the third slide groove 72 at the intersection 73.

[0040] When the second housing 2 rotates, the second connecting portion 32 slides in the third sliding groove 72. Due to the existence of the first sliding groove 411 and the sliding portion 12, when the first housing 1 moves along the axial direction of the positioning column 53, the second housing 2 also moves in the axial direction of the positioning column 53. At the same time, when the first housing 1 rotates, since the second housing 2 can move in the axial direction of the positioning column 53, and the second connecting portion 32 slides in the second sliding groove 71, it will generate displacement in the axial direction of the positioning column 53. Combined with the movement of the second housing 2 in the axial direction of the positioning column 53 when the first housing 1 moves, the second connecting portion 32 can move in the axial direction of the positioning column 53. The connecting portion 32 can slide in the third slide groove 72 which is also in a moving state during the rotation of the first shell 1, thereby realizing the rotation of the blade 3 and adjusting the flow direction of the airflow at the air outlet end of the fan; and after the position of the blade 3 is adjusted and the position of the rotating member 52 is fixed, during the rotation of the fan, the second slide groove 71 and the third slide groove 72 form a cross-type clamping structure to clamp the second connecting portion 32, so that the blade 3 can still maintain the position of the second connecting portion 32 in the second slide groove 71 and the third slide groove 72 unchanged under the action of centrifugation, thereby fixing the position of the blade 3.

[0041] Specifically, Figure 1 and Figure 3 As shown in the figure, the second connection part 32 is a column, and the end of the second connection part 32 away from the blade 3 is provided with a limit block 74 extending in a direction away from the central axis of the second connection part 32.

[0042] The setting of the limiting block 74 can enable the second connecting portion 32 to maintain connection with both the first housing 1 and the second housing 2, thereby preventing the blade 3 from falling off during the operation of the fan.

[0043] Specifically, Figure 1 and Fig.14 As shown in the combination, the sliding portion 12 is a protrusion extending toward the direction close to the central axis of the first shell 1, and the projection formed by the sliding portion 12 on a plane perpendicular to the central axis of the first shell 1 is a fan-shaped, and the projection formed by the first slide groove 411 on a plane perpendicular to the central axis of the shell 41 is the same as the projection formed by the sliding portion 12 on a plane perpendicular to the central axis of the first shell 1, and the first slide groove 411 extends and is distributed in the axial direction of the shell 41 and passes through one of the axial ends of the shell 41.

[0044] In the process of adjusting the position of the blade 3, the sliding of the sliding part 12 in the first slide groove 411 can allow the second shell 2 to move in the axial direction of the positioning column 53 when the first shell 1 moves, and cooperate with the sliding of the second connecting part 32 in the first slide groove 411, so that the sliding of the second connecting part 32 in the second slide groove 71 is not restricted, thereby not causing any hindrance to the rotation movement of the first shell 1, and thereby realizing the rotation of the blade 3 with the first connecting part 31 as the rotation center.

[0045] It needs to be further explained that if Figure 3 As shown, the bending direction of the portion of the blade 3 close to the first connection portion 31 is opposite to the bending direction of the portion of the blade 3 close to the second connection portion 32 .

[0046] Among them, the part of the blade 3 close to the first connection part 31 can drive the radial flow of the airflow fan close to the first connection part 31, so that the airflow direction of the fan close to the first connection part 31 expands outward, which is beneficial to the heat dissipation of the fan close to the first connection part 31.

[0047] The present invention also discloses a fan, such as Figure 1 , Figure 2 , Fig.15 and Fig.16 As shown in the combination, it includes a positioning frame 8 and the above-mentioned fan blade 3 connection structure, a connecting seat 81 is provided in the middle of the positioning frame 8, a heat dissipation base 9 is provided on the surface of the connecting seat 81, the end of the stator 6 away from the limiting assembly 7 is fixedly connected to the middle of the heat dissipation base 9, and a surface of the heat dissipation base 9 located on the outer side of the stator 6 is provided with a plurality of heat dissipation fins 91, and a heat dissipation channel 911 is formed between two of the heat dissipation fins 91.

[0048] It should be noted that: when the second shell 2 is rotated until the length of the entire adjustment assembly 5 in the axial direction of the positioning column 53 reaches a minimum, the position of the first shell 1 close to the first connecting portion 31 moves in the direction away from the connecting seat 81, so that the first shell 1 is no longer surrounded by the outer side of the heat dissipation base 9. At this time, the projection area formed by the blade 3 on the plane parallel to the axial direction of the positioning column 53 is the smallest. During the operation of the fan, the part of the blade 3 close to the first connecting portion 31 will drive the airflow direction of the fan close to the first connecting portion 31 to expand outward, thereby extracting the heat energy in the rotor 4 and the stator 6. Finally, the heat energy is sent to the outside of the position where the rotor 4 and the stator 6 are located driven by the airflow in the heat dissipation channel 911, thereby realizing the heat dissipation inside the fan.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A fan blade connection structure, comprising a first shell, a second shell and blades, wherein the first shell is arranged outside the rotor of the fan, and a plurality of blades are connected to the outside of the first shell, characterized in that: A matching groove is provided in the first shell, one end of the second shell is matched in the matching groove, and the other end of the second shell is fixedly connected to the movable end of the adjusting assembly, and the fixed end of the adjusting assembly is fixedly connected above the stator of the fan, the first shell is movably connected to the rotor, and a plurality of limit assemblies are provided at the edge positions of the first shell and the second shell, and a first connecting part and a second connecting part are respectively provided at both ends of the blade, the first connecting part is axially connected to one end of the first shell in the axial direction, and the second connecting part is matched in the limiting assembly, a plurality of first sliding grooves are circumferentially provided at the outer edge of the rotor shell, and a plurality of sliding parts are circumferentially provided at the inner edge of the first shell, and the first shell realizes bidirectional movement in the axial direction of the rotor through the cooperation between the sliding part and the first sliding groove.

2. The fan blade connection structure according to claim 1, characterized in that: The adjusting assembly comprises a fixed part and a rotating part, the top of the stator is connected with a positioning column in an axial connection manner, the fixed part is fixedly connected to the top of the positioning column, the rotating part is matched with the outside of the positioning column below the fixed part, the rotating part is fixedly connected to the other end of the second shell, the end face of the fixed part near the rotating part is provided with a plurality of first positioning blocks along the circumference of the fixed part, the end face of the rotating part near the fixed part is provided with a plurality of second positioning blocks along the circumference of the fixed part, the outside of the positioning column between the fixed part and the rotating part is matched with a first spring, and the bottom end of the first spring is fixedly connected to the end face of the rotating part.

3. The fan blade connection structure according to claim 2, characterized in that: A plurality of first positioning blocks are distributed on the end face of the fixed part in an equidistant manner, and a plurality of second positioning blocks are distributed on the end face of the rotating part in an equidistant manner. The projection formed by the first positioning block on a plane perpendicular to the axis of the fixed part is fan-shaped, and first inclined surfaces are provided at both ends of the first positioning block. The middle part of the first positioning block is a first plane parallel to the axial end face of the fixed part, and the projection formed by the second positioning block on a plane perpendicular to the axis of the rotating part is fan-shaped. Second inclined surfaces are provided at both ends of the second positioning block, and the middle part of the second positioning block is a second plane parallel to the axial end face of the rotating part.

4. The fan blade connection structure according to claim 2, characterized in that: A plurality of first positioning blocks are distributed on the end surface of the fixed part in an equidistant manner, and a plurality of second positioning blocks are distributed on the end surface of the rotating part in an equidistant manner. The interval between two first positioning blocks is the same as the size of the second positioning block, and the interval between two second positioning blocks is the same as the size of the first positioning block. The projection of the first positioning block on the plane perpendicular to the axial direction of the fixed part is fan-shaped, and both ends of the first positioning block transition to the middle end surface through a right angle, and both ends of the second positioning block transition to the middle end surface through a right angle.

5. The fan blade connection structure according to claim 1, characterized in that: The limiting assembly includes a second slide groove and a third slide groove, the second slide groove is arranged on the wall surface at the edge of the first shell, the first projection of the second slide groove on the plane perpendicular to the axis of the first shell is an arc, the second projection of the second slide groove on the plane parallel to the axis of the first shell is an inclined straight line, the third slide groove is arranged on the wall surface at the edge of the second shell and is opposite to the second slide groove, the third projection of the third slide groove on the plane parallel to the axis of the second shell is a straight line, the third projection and the second projection have an intersection on the plane parallel to the central axis of the fan, and the second connecting portion is through-fitted into the second slide groove and the third slide groove at the intersection position.

6. The fan blade connection structure according to claim 5, characterized in that: The second connection part is a column, and the end of the second connection part away from the blade side is provided with a limit block extending in a direction away from the central axis of the second connection part.

7. The fan blade connection structure according to claim 5, characterized in that: The sliding portion is a protrusion extending toward the direction close to the central axis of the first shell. The projection formed by the sliding portion on a plane perpendicular to the central axis of the first shell is a fan-shaped. The projection formed by the first slide groove on a plane perpendicular to the central axis of the shell is the same as the projection formed by the sliding portion on a plane perpendicular to the central axis of the first shell. The first slide groove extends and is distributed in the axial direction of the shell and passes through one of the axial ends of the shell.

8. The fan blade connection structure according to claim 1, characterized in that: The portion of the blade close to the first connection portion is bent in a direction opposite to the direction in which the portion of the blade close to the second connection portion is bent.

9. A fan, comprising a positioning frame and a fan blade connection structure according to any one of claims 1 to 8, characterized in that: A connecting seat is provided in the middle of the positioning frame, a heat dissipation base is provided on the surface of the connecting seat, the end of the stator away from the limiting assembly is fixedly connected to the middle of the heat dissipation base, and a surface of the heat dissipation base located on the outer side of the stator is provided with a plurality of heat dissipation fins, and a heat dissipation channel is formed between two of the heat dissipation fins.

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