Propeller and unmanned aerial vehicle

Abstract

The embodiment of the present application relates to the technical field of unmanned aerial vehicle, and discloses a propeller and unmanned aerial vehicle, which comprises a blade, a propeller clamp assembly and a gasket assembly, the propeller clamp assembly comprises a propeller seat and a propeller clamp, the propeller seat and the propeller clamp clamp the blade, a connecting piece is fixed to the propeller seat after penetrating through the propeller clamp and the blade, the gasket assembly is arranged between the propeller clamp assembly and the blade, the gasket assembly comprises a first gasket, a second gasket and a retainer, the first gasket and the second gasket are respectively arranged on the two sides of the retainer, the first gasket, the second gasket and the retainer are all sleeved on the connecting piece, the first gasket abuts against the propeller clamp assembly, and the second gasket abuts against the blade. Through the above mode, the rotating frictional resistance of the blade can be reduced.

Description

Technical Field

[0001] This invention relates to the field of unmanned aerial vehicle technology, and in particular to a propeller and an unmanned aerial vehicle. Background Technology

[0002] Unmanned aerial vehicles (UAVs) are widely used in fields such as aerial photography, topographic mapping, agricultural plant protection, and logistics transportation. UAVs fly by driving propellers through a power unit. To facilitate storage of UAVs, the propeller blades are foldable and can be folded when not in flight.

[0003] However, in the process of implementing the embodiments of the present invention, the inventors discovered that: currently, the blade is sleeved on the connector, the blade is clamped by the blade clamp assembly, and a gasket is provided between the blade clamp assembly and the blade, with the two sides of the gasket abutting against the blade clamp assembly and the blade respectively, resulting in high frictional resistance to the rotation of the blade. Summary of the Invention

[0004] The main technical problem solved by this invention is to provide a propeller that can solve the problem of high frictional resistance during propeller blade rotation.

[0005] To solve the above-mentioned technical problems, one technical solution adopted by the present invention is: to provide a propeller, including a blade, a blade clamp assembly, and a gasket assembly. The blade clamp assembly includes a blade seat and a blade clamp, which clamp the blade. A connecting member passes through the blade clamp and blade and is fixed to the blade seat. The gasket assembly is disposed between the blade clamp assembly and the blade. The gasket assembly includes a first gasket, a second gasket, and a retainer. The first gasket and the second gasket are rotatably disposed on both sides of the retainer. The first gasket, the second gasket, and the retainer are all sleeved on the connecting member. The first gasket abuts against the blade clamp assembly, and the second gasket abuts against the blade.

[0006] Optionally, the gasket assembly is disposed between the blade and the blade seat, with the first gasket abutting against the blade seat and the second gasket abutting against the blade;

[0007] or,

[0008] The gasket assembly is disposed between the blade and the blade clamp, with the first gasket abutting against the blade clamp and the second gasket abutting against the blade;

[0009] or,

[0010] The number of gasket assemblies is two. One gasket assembly is placed between the blade and the blade clamp. The first gasket of the first gasket assembly abuts against the blade clamp, and the second gasket of the first gasket assembly abuts against the blade. The other gasket assembly is placed between the blade and the blade seat. The first gasket of the other gasket assembly abuts against the blade seat, and the second gasket of the other gasket assembly abuts against the blade.

[0011] Optionally, the cage is provided with a first rotating groove and a second rotating groove on both sides respectively;

[0012] The first gasket is received in the first rotating groove, and a portion of the first gasket protrudes from the first rotating groove, the portion of the first gasket protruding from the first rotating groove abutting against the paddle clamp assembly;

[0013] The second gasket is received in the second rotating groove, and a portion of the second gasket protrudes from the second rotating groove, the portion of the second gasket protruding from the second rotating groove abutting against the blade.

[0014] Optionally, the gasket assembly includes a plurality of first rolling elements, the retainer is provided with a plurality of rolling grooves, the rolling grooves are connected to the first rotating groove and the second rotating groove, one of the rolling elements is rotatably received in one of the rolling grooves, the two sides of the rolling element extend into the first rotating groove and the second rotating groove respectively, and the two sides of the first rolling element abut against the first gasket and the second gasket respectively.

[0015] Optionally, the gasket assembly includes a plurality of second rolling elements, which are rotatably disposed in the first rotating groove and abut against the first gasket.

[0016] and / or;

[0017] The gasket assembly includes a plurality of third rolling elements, which are rotatably disposed in the second rotating groove and abut against the second gasket.

[0018] Optionally, the propeller clamp or the propeller seat is provided with a receiving groove, the gasket assembly is partially received in the receiving groove, and the first gasket of the gasket assembly abuts against the bottom surface of the receiving groove.

[0019] Optionally, the connector includes a cap, a shaft, and a fixing part. The cap is fixed to one end of the shaft and abuts against the propeller clamp. The shaft passes through the propeller clamp, the gasket assembly, and the propeller seat. The fixing part is fixed to the other end of the shaft and abuts against the propeller seat.

[0020] Optionally, the surface of the propeller clamp facing away from the propeller seat is provided with a first receiving groove, and the cap is received in the first receiving groove.

[0021] Optionally, the surface of the propeller seat facing away from the propeller blade is provided with a second receiving groove, and the fixing part is received in the second receiving groove.

[0022] To solve the above-mentioned technical problems, another technical solution adopted by the present invention is to provide an unmanned aerial vehicle, including the above-mentioned propeller.

[0023] In this embodiment of the invention, the propeller includes blades, a blade clamp assembly, and a gasket assembly. The blade clamp assembly includes a blade seat and a blade clamp, which hold the blades. A connecting member passes through the blade clamp and blades and is fixed to the blade seat. The gasket assembly is disposed between the blade clamp assembly and the blades. The gasket assembly includes a first gasket, a second gasket, and a retainer. The first and second gaskets are rotatably disposed on both sides of the retainer. The first gasket, the second gasket, and the retainer are all sleeved on the connecting member. The first gasket abuts against the blade clamp assembly, and the second gasket abuts against the blades. By rotatably disposing the first and second gaskets on both sides of the retainer, the rotational frictional resistance of the blades is reduced. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0025] Figure 1 This is an exploded view of the propeller structure provided in an embodiment of the present invention;

[0026] Figure 2 This is a schematic cross-sectional view of the propeller provided in an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the propeller blades provided in an embodiment of the present invention;

[0028] Figure 4 This is an exploded schematic diagram of the structure of the propeller clamp assembly provided in an embodiment of the present invention;

[0029] Figure 5 This is another exploded view of the structure of the propeller clamp assembly provided in an embodiment of the present invention;

[0030] Figure 6 This is an exploded view of the propeller gasket assembly provided in an embodiment of the present invention;

[0031] Figure 7 This is a schematic cross-sectional view of the propeller gasket assembly provided in an embodiment of the present invention;

[0032] Figure 8 This is an exploded view of the structure of the propeller connector provided in an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100. Propeller;

[0035] 1. Blade; 11. Root; 111. First through hole; 112. First friction surface; 113. Second friction surface; 12. Blade section;

[0036] 2. Propeller clip assembly; 21. Propeller mount; 211. Second receiving slot; 212. Second through hole; 213. Third through hole; 214. Insertion hole; 215. Weight reduction slot; 22. Propeller clip; 221. First receiving slot; 222. Fourth through hole; 23. Receiving slot;

[0037] 3. Gasket assembly; 31. Retainer; 311. First rotating groove; 312. Second rotating groove; 313. Fifth through hole; 314. Rolling groove; 32. First gasket; 321. Sixth through hole; 33. Second gasket; 331. Seventh through hole; 34. First rolling element;

[0038] 4. Connecting part; 41. Cap; 42. Shaft; 421. External thread; 43. Fixing part; 431. Threaded hole. Detailed Implementation

[0039] To facilitate understanding of the present invention, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0040] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0041] Please see Figure 1 and Figure 2 The propeller 100 includes a blade 1, a blade clamp assembly 2, a gasket assembly 3, and a connector 4. The blade clamp assembly 2 clamps the blade 1 and is used to connect and fix it to the power unit, thereby enabling the power unit to drive the propeller 100 to rotate. The gasket assembly 3 is placed between the blade clamp assembly 2 and the blade 1, and is used to reduce wear on the friction surface of the blade 1. The connector 4 passes through the blade 1, the gasket assembly 3, and the blade clamp assembly 2 and is fixed to the blade clamp assembly 2. The blade 1 can rotate relative to the blade clamp assembly 2 around the connector 4, thereby allowing the blade 1 to fold or unfold.

[0042] For blade 1 mentioned above, please refer to Figure 3 The blade 1 is provided with a root 11 and a blade portion 12. The root 11 is fixed to the blade portion 12, and the root 11 is provided with a first through hole 111 through which the connector 4 passes. The root 11 has a first friction surface 112 and a second friction surface 113 facing each other.

[0043] For the aforementioned propeller clamp assembly 2, please refer to Figure 4 and Figure 5 The propeller clamp assembly 2 includes a propeller base 21 and a propeller clamp 22. The propeller base 21 or the propeller clamp 22 is provided with a receiving groove 23. The receiving groove 23 is provided on the surface of the propeller base 21 facing the propeller clamp 22 or the surface of the propeller clamp 22 facing the propeller base 21. The receiving groove 23 is used to receive a portion of the gasket assembly 3. The propeller base 21 and the propeller clamp 22 clamp the root 11 and the gasket assembly 3.

[0044] The propeller holder 21 is provided with a second receiving groove 211, a second through hole 212, a third through hole 213, and an insertion hole 214. The second receiving groove 211 is provided on the surface of the propeller holder 21 facing away from the propeller clamp 22, and the second receiving groove 211 receives a portion of the connector 4. The second through hole 212 connects to the second receiving groove 211. When the propeller holder 21 is provided with a receiving groove 23, the second through hole 212 connects to the receiving groove 23, and the second through hole 212 allows the connector 4 to pass through. The third through hole 213 is used for the locking member to pass through and connect to the power member, thereby connecting and fixing the propeller holder 21 to the power member. The insertion hole 214 penetrates the propeller holder 21, and the insertion hole 214 is used for the portion of the power supply member to be inserted.

[0045] In some embodiments, the propeller holder 21 is further provided with a weight reduction groove 215, which is disposed on the surface of the propeller holder 21 facing away from the propeller clamp 22, and the weight reduction groove 215 is used to reduce the weight of the propeller holder 21.

[0046] The propeller clamp 22 is provided with a first receiving groove 221 and a fourth through hole 222. The first receiving groove 221 is provided on the surface of the propeller clamp 22 facing away from the propeller seat 21, and the first receiving groove 221 receives a portion of the connector 4. The fourth through hole 222 connects to the first receiving groove 221. When the propeller clamp 22 is provided with a receiving groove 23, the fourth through hole 222 connects to the receiving groove 23, and the fourth through hole 222 allows the connector 4 to pass through.

[0047] For the gasket assembly 3 mentioned above, please refer to Figure 6 and Figure 7 The gasket assembly 3 is disposed between the root 11 and the propeller seat 21, or between the root 11 and the propeller clamp 22. The gasket assembly 3 includes a retainer 31, a first gasket 32, and a second gasket 33. The retainer 31 is received in a receiving groove 23, with a portion of the retainer 31 protruding from the receiving groove 23. The first gasket 32 ​​is rotatably disposed on one side of the retainer 31, and is received in the receiving groove 23, abutting against the bottom surface of the receiving groove 23, so that the first gasket 32 ​​abuts against the propeller seat 21 or the propeller clamp 22. The second gasket 33 is rotatably disposed on the other side of the retainer 31, and abuts against a first friction surface 112 or a second friction surface 113, so that the second gasket 33 abuts against the propeller blade 1. By rotatably mounting the first shim 32 and the second shim 33 on both sides of the retainer 31, the frictional resistance of the blade 1 when rotating relative to the blade clamp assembly 2 is reduced, thereby reducing the wear of the first friction surface 112 or the second friction surface 113 and improving the wear resistance.

[0048] The retainer 31 is provided with a first rotating groove 311, a second rotating groove 312, and a fifth through hole 313. The first rotating groove 311 is provided on one side of the retainer 31. The second rotating groove 312 is provided on the other side of the retainer 31. The fifth through hole 313 connects the first rotating groove 311 and the second rotating groove 312, and the fifth through hole 313 allows the connector 4 to pass through so that the retainer 31 is fitted onto the connector 4.

[0049] The first gasket 32 ​​is received in the first rotating groove 311, and a portion of the first gasket 32 ​​protrudes from the first rotating groove 311. The portion of the first gasket 32 ​​protruding from the first rotating groove 311 abuts against the bottom surface of the receiving groove 23. The first gasket 32 ​​is provided with a sixth through hole 321, through which the connector 4 passes, so that the first gasket 32 ​​is fitted onto the connector 4.

[0050] The second gasket 33 is received in the second rotating groove 312, and a portion of the second gasket 33 protrudes from the second rotating groove 312. The portion of the second gasket 33 protruding from the second rotating groove 312 abuts against the first friction surface 112 or the second friction surface 113. The portion of the second gasket 33 abutting against the first friction surface 112 or the second friction surface 113 at the root 11 is flat, so that the second gasket 33 is in close contact with the first friction surface 112 or the second friction surface 113, thereby limiting the space for the blade 1 to wobble during operation, making the helix angle of the blade 1 stable, that is, the lift stable. The second gasket 33 is provided with a seventh through hole 331, through which the connector 4 passes, so that the second gasket 33 is fitted onto the connector 4.

[0051] In some embodiments, the retainer 31, the first gasket 32, and the second gasket 33 are all made of high-hardness materials such as bearing steel, making the gasket assembly 3 less sensitive to temperature and allowing it to be used at 150°C, thus enabling the gasket assembly 3 to operate stably in environments with large temperature variations. Furthermore, in some embodiments, the minimum thickness of the first gasket 32 ​​and the second gasket 33 is 0.2 mm.

[0052] In some embodiments, the gasket assembly 3 includes a plurality of first rolling elements 34, and the retainer 31 is provided with a plurality of rolling grooves 314. The rolling grooves 314 are arranged around the fifth through hole 313 and connect the first rotating groove 311 and the second rotating groove 312. A first rolling element 34 is rotatably received in a rolling groove 314. One side of the first rolling element 34 extends into the first rotating groove 311, one side of the first rolling element 34 abuts against the first gasket 32, and the other side of the first rolling element 34 extends into the second rotating groove 312 and abuts against the second gasket 33. The frictional force of the rotation of the first gasket 32 ​​and the second gasket 33 is reduced by the first rolling elements 34, thereby reducing the frictional resistance of the blade 1 rotation.

[0053] In some embodiments, the first rolling element 34 is made of a high-hardness material such as bearing steel.

[0054] In some embodiments, the distance between one side of the first rolling element 34 and the other side is small, for example, 1.5 mm, to reduce the weight of the propeller 100, making the gasket assembly 3 thin and light, so that the first gasket 32 ​​and the second gasket 33 of different thicknesses can be matched according to different loads, for example, matching the first gasket 32 ​​and the second gasket 33 of 0.2 mm thickness, further reducing the weight of the propeller 100.

[0055] In some embodiments, the first rolling element 34 is a needle roller, a ball roller, or a roller.

[0056] It is understood that in some embodiments, the gasket assembly 3 is not limited to the structure described above, and the gasket assembly 3 can be other structures. For example, the gasket assembly 3 includes a plurality of second rolling elements (not shown) and / or a plurality of third rolling elements (not shown). The plurality of second rolling elements are rotatably disposed in the first rotating groove 311 and abut against the first gasket 32, and / or, the plurality of third rolling elements are rotatably disposed in the second rotating groove 312 and abut against the second gasket 33.

[0057] In some embodiments, the second rolling element and the third rolling element are each of a needle roller, a needle roller, or a roller.

[0058] In some embodiments, there are two shim assemblies 3. One shim assembly 3 is placed between the blade 1 and the blade clamp 22, with its first shim 32 abutting against the blade clamp 22 and its second shim 33 abutting against the blade 1. The other shim assembly 3 is placed between the blade 1 and the blade seat 21, with its first shim 32 abutting against the blade seat 21 and its second shim 33 abutting against the blade 1. By placing shim assemblies 3 on both sides of the blade 1, the rotational friction resistance of the blade 1 is reduced, further improving its wear resistance.

[0059] In some embodiments, the number of blades 1, connectors 4, and gasket assemblies 3 are all two. A connector 4 passes through the blade clamp 22, the gasket assembly 3, and the blade 1 and is fixed to the blade holder 21. A gasket assembly 3 is placed between a blade 1 and a blade clamp assembly 2. Furthermore, in some embodiments, the number of gasket assemblies 3 is four, with one gasket assembly 3 placed between each blade 1 and both the blade clamp 22 and the blade holder 21. However, the number of blades 1, connectors 4, and gasket assemblies 3 is not limited to these; the number of blades 1 and connectors 4 can be three, four, five, etc., and correspondingly, the number of gasket assemblies 3 can be three, four, five, etc., or the number of gasket assemblies 3 can be six, eight, ten, etc.

[0060] It should be noted that when there are two or more blades 1, since both the first shim 32 and the second shim 33 are rotatably mounted on the retainer 31, the frictional resistance of the blade 1 rotation is reduced, the consistency of the deployment of the two or more blades 1 is improved, and the dynamic imbalance of the propeller 100 is reduced, thereby reducing the vibration of the propeller 100. Furthermore, the close contact between the second shim 33 and the first friction surface 112 and / or the second friction surface 113 of the root 11 further reduces the vibration of the propeller 100. Moreover, since both the first shim 32 and the second shim 33 are rotatably mounted on the retainer 31, the frictional resistance of the blade 1 rotation is reduced. During propeller 100 installation, the pressure range between the second shim 33 and the root 11 can be adjusted, maintaining the rotational resistance of the two or more blades 1, thereby maintaining the consistency of the deployment of the two or more blades 1, reducing installation requirements, and resulting in a high degree of installation consistency.

[0061] For connector 4 mentioned above, please refer to Figure 8The connector 4 includes a cap 41, a shaft 42, and a fixing part 43. The cap 41 is received in a first receiving groove 221 and fixed to one end of the shaft 42. The cap 41 abuts against the bottom surface of the first receiving groove 221, thereby abutting against the propeller clamp 22. The shaft 42 passes through a fourth through hole 222, a first through hole 111, a sixth through hole 321, a fifth through hole 313, a seventh through hole 331, and a second through hole 212. The fixing part 43 is fixed to the other end of the shaft 42 and received in a second receiving groove 211. The fixing part 43 abuts against the bottom surface of the second receiving groove 211, thereby abutting against the propeller seat 21.

[0062] In some embodiments, the other end of the shaft portion 42 is provided with an external thread 421, and the fixing portion 43 is provided with a screw hole 431. The external thread 421 is screwed into the screw hole 431, so that the shaft portion 42 and the fixing portion 43 are screwed and fixed.

[0063] It is understood that in some embodiments, the connector 4 is not limited to the above structure. The connector 4 can be other structures. For example, the connector 4 does not include the fixing part 43, and the other end of the shaft part 42 is interference-fitted with the second through hole 212, so that the shaft part 42 is fixed to the propeller seat 21.

[0064] In this embodiment of the invention, the propeller 100 includes a blade 1, a blade clamp assembly 2, and a gasket assembly 3. The blade clamp assembly 2 includes a blade seat 21 and a blade clamp 22, which clamp the blade 1. A connector 4 passes through the blade clamp 22 and the blade 1 and is fixed to the blade seat 21. The gasket assembly 3 is placed between the blade clamp assembly 2 and the blade 1. The gasket assembly 3 includes a first gasket 32, a second gasket 33, and a retainer 31. The first gasket 32 ​​and the second gasket 33 are rotatably disposed on both sides of the retainer 31. The first gasket 32, the second gasket 33, and the retainer 31 are all sleeved on the connector 4. The first gasket 32 ​​abuts against the blade clamp assembly 2, and the second gasket 33 abuts against the blade 1. By rotatably disposing the first gasket 32 ​​and the second gasket 33 on both sides of the retainer 31, the rotational frictional resistance of the blade 1 is reduced.

[0065] The present invention also provides an embodiment of an unmanned aerial vehicle, including the propeller 100 described above. The structure and function of the propeller 100 can be referred to the above embodiment, and will not be repeated here.

[0066] It should be noted that while the preferred embodiments of the present invention are given in the specification and accompanying drawings, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of the present invention; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of the present invention. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of the present invention specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A propeller, characterized in that, include: Paddle blades; A propeller clamp assembly includes a propeller mount and a propeller clamp, the propeller mount and the propeller clamp holding the propeller blade; A connector that passes through the propeller clamp and the propeller blade and is then fixed to the propeller mount; A gasket assembly is provided between the propeller clamp assembly and the propeller blade. The gasket assembly includes a first gasket, a second gasket, and a retainer. The first gasket and the second gasket are rotatably disposed on both sides of the retainer. The first gasket, the second gasket, and the retainer are all sleeved on the connector. The first gasket abuts against the propeller clamp assembly, and the second gasket abuts against the propeller blade. The retainer is provided with a first rotating groove and a second rotating groove on both sides respectively. The first gasket is received in the first rotating groove, and a portion of the first gasket protrudes from the first rotating groove, the portion of the first gasket protruding from the first rotating groove abutting against the paddle clamp assembly; The second gasket is received in the second rotating groove, and a portion of the second gasket protrudes from the second rotating groove, the portion of the second gasket protruding from the second rotating groove abutting against the blade; The gasket assembly includes a plurality of first rolling elements, and the retainer is provided with a plurality of rolling grooves. The rolling grooves connect the first rotating groove and the second rotating groove. One of the rolling elements is rotatably received in one of the rolling grooves. The two sides of the rolling element extend into the first rotating groove and the second rotating groove, respectively, and the two sides of the first rolling element abut against the first gasket and the second gasket, respectively.

2. The propeller according to claim 1, characterized in that, The gasket assembly is disposed between the blade and the blade seat, with the first gasket abutting against the blade seat and the second gasket abutting against the blade; or, The gasket assembly is disposed between the blade and the blade clamp, with the first gasket abutting against the blade clamp and the second gasket abutting against the blade; or, The number of gasket assemblies is two. One gasket assembly is placed between the blade and the blade clamp. The first gasket of the first gasket assembly abuts against the blade clamp, and the second gasket of the first gasket assembly abuts against the blade. The other gasket assembly is placed between the blade and the blade seat. The first gasket of the other gasket assembly abuts against the blade seat, and the second gasket of the other gasket assembly abuts against the blade.

3. The propeller according to claim 1, characterized in that, The propeller clamp or the propeller seat is provided with a receiving groove, the gasket assembly is partially received in the receiving groove, and the first gasket of the gasket assembly abuts against the bottom surface of the receiving groove.

4. The propeller according to claim 1, characterized in that, The connector includes a cap, a shaft, and a fixing part. The cap is fixed to one end of the shaft and abuts against the propeller clamp. The shaft passes through the propeller clamp, the gasket assembly, and the propeller seat. The fixing part is fixed to the other end of the shaft and abuts against the propeller seat.

5. The propeller according to claim 4, characterized in that, The surface of the propeller clamp facing away from the propeller seat is provided with a first receiving groove, and the cap is received in the first receiving groove.

6. The propeller according to claim 4, characterized in that, The surface of the propeller base opposite to the propeller blade is provided with a second receiving groove, and the fixing part is received in the second receiving groove.

7. A propeller, characterized in that, include: Paddle blades; A propeller clamp assembly includes a propeller mount and a propeller clamp, the propeller mount and the propeller clamp holding the propeller blade; A connector that passes through the propeller clamp and the propeller blade and is then fixed to the propeller mount; A gasket assembly is provided between the propeller clamp assembly and the propeller blade. The gasket assembly includes a first gasket, a second gasket, and a retainer. The first gasket and the second gasket are rotatably disposed on both sides of the retainer. The first gasket, the second gasket, and the retainer are all sleeved on the connector. The first gasket abuts against the propeller clamp assembly, and the second gasket abuts against the propeller blade. The retainer is provided with a first rotating groove and a second rotating groove on both sides respectively. The first gasket is received in the first rotating groove, and a portion of the first gasket protrudes from the first rotating groove, the portion of the first gasket protruding from the first rotating groove abutting against the paddle clamp assembly; The second gasket is received in the second rotating groove, and a portion of the second gasket protrudes from the second rotating groove, the portion of the second gasket protruding from the second rotating groove abutting against the blade; The gasket assembly includes a plurality of second rolling elements, which are rotatably disposed in the first rotating groove and abut against the first gasket. and / or; The gasket assembly includes a plurality of third rolling elements, which are rotatably disposed in the second rotating groove and abut against the second gasket.

8. An unmanned aerial vehicle, characterized in that, Including the propeller as described in any one of claims 1-7.

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