WO2023272489A1 - 螺旋桨及无人飞行器 - Google Patents

螺旋桨及无人飞行器 Download PDF

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Publication number
WO2023272489A1
WO2023272489A1 PCT/CN2021/103134 CN2021103134W WO2023272489A1 WO 2023272489 A1 WO2023272489 A1 WO 2023272489A1 CN 2021103134 W CN2021103134 W CN 2021103134W WO 2023272489 A1 WO2023272489 A1 WO 2023272489A1
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WO
WIPO (PCT)
Prior art keywords
blade
protection device
propeller
blade protection
unmanned aerial
Prior art date
Application number
PCT/CN2021/103134
Other languages
English (en)
French (fr)
Inventor
黄宏升
蒋再龙
陈鹏
Original Assignee
深圳市大疆创新科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to PCT/CN2021/103134 priority Critical patent/WO2023272489A1/zh
Publication of WO2023272489A1 publication Critical patent/WO2023272489A1/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64CAEROPLANES; HELICOPTERS
    • B64C27/00Rotorcraft; Rotors peculiar thereto
    • B64C27/32Rotors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B64AIRCRAFT; AVIATION; COSMONAUTICS
    • B64DEQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D45/00Aircraft indicators or protectors not otherwise provided for

Definitions

  • the embodiments of the present application relate to the technical field of propeller structure design, and in particular to propellers and unmanned aerial vehicles.
  • the present application is proposed to solve the above-mentioned problems or at least partly solve the above-mentioned problems with a propeller and an unmanned aerial vehicle.
  • the embodiment of the first aspect of the present application provides a propeller, including:
  • a blade connected to the hub, the blade including a connection end connected to the hub, and an end away from the hub;
  • the blade protection device at least partially surrounds the end of the blade, and the blade protection device can rotate synchronously with the blade.
  • the embodiment of the second aspect of the present application provides an unmanned aerial vehicle, including: a fuselage, an arm, and a propeller provided on the arm, wherein the propeller includes:
  • a blade connected to the hub, the blade including a connection end connected to the hub, and an end away from the hub;
  • the blade protection device at least partially surrounds the end of the blade, and the blade protection device can rotate synchronously with the blade.
  • the propeller and the unmanned aerial vehicle provided by the embodiment of the present application are provided with a blade protection device, and the blade protection device at least partially surrounds the end of the blade, and the blade protection device can follow the rotation of the propeller, so that the blade protection device and the propeller The relative position of the blade remains unchanged, no matter how the propeller rotates, the blade protection device can always surround the end of the blade, so as to play the role of blade protection more reliably, preventing the end of the blade from scratching the user or hitting other objects object.
  • FIG. 1 is a schematic structural view of the first propeller provided in the embodiment of the present application.
  • Fig. 2 is a schematic structural diagram of a second propeller provided in the embodiment of the present application.
  • FIG. 3 is a schematic structural view of a third propeller provided in an embodiment of the present application.
  • FIG. 4 is a schematic structural view of a fourth propeller provided in the embodiment of the present application.
  • Fig. 5 is a schematic structural diagram of a fifth propeller provided in the embodiment of the present application.
  • Fig. 6 is a schematic structural diagram of a sixth type of propeller provided by the embodiment of the present application.
  • connection herein includes any direct and indirect means of connection. Therefore, if it is described herein that a first device is connected to a second device, it means that the first device may be directly connected to the second device, or indirectly connected to the second device through other devices.
  • the protection device has a complex structure and heavy weight, which will bring a large load burden to the unmanned aerial vehicle and reduce the load capacity of the unmanned aerial vehicle.
  • the embodiments of the present application design the blade protection device as a lightweight structure, thereby ensuring that the end of the blade can be surrounded, so that when the propeller collides, it is ensured that the end of the blade does not It will scratch the surface of the user's skin, reduce the damage of the blades, improve the safety of unmanned aerial vehicles, and improve the user experience.
  • Figure 1 is a schematic structural view of the first type of propeller provided by the embodiment of the present application
  • Figure 2 is a schematic structural view of the second type of propeller provided by the embodiment of the present application
  • Figure 3 is a schematic structural view of the third type of propeller provided by the embodiment of the present application
  • FIG. 4 is a schematic structural view of the fourth propeller provided by the embodiment of the present application
  • FIG. 5 is a schematic structural view of the fifth propeller provided by the embodiment of the present application
  • FIG. 6 is a structure of the sixth propeller provided by the embodiment of the present application schematic diagram.
  • the propeller provided by the embodiment of the present application includes a propeller hub 10 , a propeller blade 20 and a propeller blade protection device 30 .
  • the blade 20 is connected with the hub 10, and the blade 20 includes a connection end 21 connected with the hub 10, and an end 22 away from the hub 10.
  • a propeller can include a plurality of blades 20, wherein, a plurality refers to two, or more than two, and the plurality of blades 20 can be arranged symmetrically around the center of the propeller hub 10, and the propeller hub 10 can be used for driving devices such as motors connected, driven by the driving device, the propeller hub 10 rotates together with the propeller blades 20 .
  • the blade protection device 30 at least partially surrounds the end 22 of the blade 20 , and the blade protection device 30 can rotate synchronously with the blade 20 .
  • each propeller may have at least two blades 20 , for example, two, three, four, etc. may be used.
  • the end 22 of the blade 20 can be within a preset length range of the end of the blade 20 away from the hub 10 , which can be referred to as the end 22 of the blade 20 .
  • the blade protection device 30 at least partially surrounds the end 22 of the blade 20 , it means that the blade protection device 30 may only surround the end 22 of the blade 20 , may also surround the end 22 of the blade 20 , and may also surround other positions.
  • the surrounding range of the blade protection device 30 may at least surround the end 22 of the blade 20 on the rotation plane of the blade 20 .
  • the blade protection device 30 can be made of plastic, rubber, or aluminum alloy and other light materials, so that the weight of the blade protection device 30 can be as light as possible, and then the weight of the entire propeller can be reduced. It is light in weight and meets the lightweight requirements of unmanned aerial vehicles. And, understandably, the heavier the propeller, the greater the moment of inertia, and the more uncontrollable the acceleration and deceleration of the propeller. Therefore, the weight of the blade protection device can be minimized to avoid excessively increasing the weight of the propeller.
  • the cross-sectional shape of the blade protection device 30 may include at least one of the following: circle, semicircle, ellipse, and rectangle, which is not limited in the embodiment of the present application.
  • the blade protection device 30 may be a specific shape formed by bending a rod-shaped part, or, in some embodiments, the blade protection device 30 is formed by splicing a plurality of rod parts.
  • the blade protection device 30 may include a side surface close to the blade and a side surface away from the blade.
  • the surface of the blade protection device 30 away from the blade 20 may be a plane or a convex arc surface.
  • the plane may be substantially perpendicular to the plane of rotation of the propeller.
  • the surface of the blade protection device 30 away from the blade 20 is a convex arc surface, and as shown in Figures 4 to 6, the surface of the blade protection device 30 away from the blade 20 for the plane.
  • the surface perpendicular to the plane of rotation of the propeller will cut the user or the object, and the blade protection device 30 in the embodiment of the application rotates with the blade 20, and the blade protection device 30 is far away from the blade
  • One side surface of the paddle 20 is a plane or a convex arc surface, so there is no sharp point on the surface that is in contact with the user or the object, which can further prevent the blade protection device 30 that rotates with the paddle 20 from cutting the user or the surface of other objects .
  • the propeller provided by the embodiment of the present application is provided with a blade protection device, and the blade protection device at least partially surrounds the end of the blade, and the blade protection device can follow the rotation of the propeller, so that the blade protection device is opposite to the blade of the propeller The position remains unchanged, no matter how the propeller rotates, the blade protection device can always surround the end of the blade, so as to more reliably play the role of blade protection, preventing the end of the blade from scratching the user or hitting other objects.
  • the blade protection device 30 may be connected with the blade 20 so that the blade protection device 30 may rotate synchronously with the blade 20 . Furthermore, the blade protection device 30 may at least be connected to the end 22 of the blade 20 . Specifically, the blade protection device 30 may be integrally formed with the end 22 of the blade 20 or be detachably connected.
  • connection between the blade protection device 30 and the blade 20 may include: the blade protection device 30 is directly connected to the blade 20, or the blade protection device 30 is directly connected to the blade hub 10. connection, so as to realize the indirect connection between the blade protection device 30 and the blade 20 .
  • the blade protection device 30 can be in contact with the end 22 of the blade 20, so that there is no gap between the blade protection device 30 and the end 22 of the blade 20, which can prevent the user from inadvertently extending into the blade protection device 30 and the blade.
  • the gap between the ends 22 of the blade 2 is cut by the end 22 of the blade 2, thereby ensuring the safety of the unmanned aerial vehicle to a greater extent.
  • the blade protection device 30 may be connected to the end 22 of the blade 20, so that the blade protection device 30 is reliably fixed to the end 22 of the blade 20, so as to prevent the blade protection device 30 from being damaged during the rotation of the propeller.
  • a gap is created with the tip 22 of the paddle 20 .
  • the blade protection device 30 may surround the blade 20 along the length direction of the blade 20 so that the blade 20 is completely and reliably protected within a range of 180°.
  • the blade protection device 30 surrounds the blade 20 along the length direction of the blade 20, in some embodiments, as shown in FIGS.
  • the blade guard 30 extends to the tip 22 of the blade 20 .
  • the blade protection device 30 may be connected to the end 22 of the blade 20 or not, as long as the blade protection device 30 extends to the end 22 of the blade 20 .
  • the blade protection device 30 is connected to the hub 10 and the end 22 of the blade 20 respectively, so that the blade protection device 30 and the propeller can have at least two connection points, so that The connection between the blade protection device 30 and the propeller is relatively stable.
  • the blade protection device 30 may only be directly connected to the blade 20 .
  • the blade protection device 30 may be connected to the connection end 21 of the blade 20 , and the blade protection device 30 extends to the end 22 of the blade 20 .
  • the blade protection device 30 may be connected to the end 22 of the blade 20 or not, as long as the blade protection device 30 extends to the end 22 of the blade 20 .
  • the blade protection device 30 is connected to the connection end 21 of the blade 20 and the end 22 of the blade 20 respectively, so that the connection of the blade protection device 30 is reliable and stable.
  • the paddle 20 may further include a middle portion 23 between the connection end 21 of the paddle 20 and the end 22 of the paddle 20 .
  • the middle part 23 does not specifically refer to the middle position in the length direction of the blade 20 , but other parts except the connection end 21 and the end 22 can be called the middle part 23 .
  • the blade protection device 30 can surround at least part of the blade 20 along the length direction of the blade 20. As shown in FIGS. The other side of the blade guard 30 may extend to the tip 22 of the blade 20 . Similarly, it can be understood that in this embodiment, the blade protection device 30 may be connected to the end 22 of the blade 20 or not, as long as the blade protection device 30 extends to the end 22 of the blade 20 . Preferably, the blade protection device 30 is connected to the middle part 23 of the blade 20 and the end 22 of the blade 20 respectively, so that the connection of the blade protection device 30 is reliable and stable.
  • the blade protection device 30 When the blade protection device 30 is connected to the connecting end 21 of the blade 20 or the hub 10 and extends to the end 22 of the blade 20, the blade protection device 30 surrounds the blade 20, so that the blade protection device 30 is on the blade Paddle blade 20 is fully protected in the rotation plane of 20. And when the blade protection device 30 is connected with the middle part 23 of the blade 20 and extends to the end 22 of the blade 20, the entire blade protection device 30 surrounds part of the blade 20, so that the blade protection device 30 is opposite to the blade 20.
  • the end 22 of the propeller is reliably protected, and the overall size is also small, which improves the lightweight of the propeller and reduces the moment of inertia of the propeller.
  • the paddle protection device 30 may be integrally formed with the paddle 20 , or may be detachably connected with the paddle 20 .
  • the paddle 20 is made of plastic material, and the paddle protection device 30 and the paddle 20 can be integrally injection-molded to reduce processing costs and improve production efficiency.
  • the blade protection device 30 may also be detachably connected to the blade 20 , for example, the blade protection device 30 is connected to the blade 20 through screws or buckles.
  • the blade guard 30 may be detachably connected to the end 22 of the blade 20 .
  • the blade protection device 30 may be connected to the end 22 of the blade 20 through screws, or a snap connection and the like.
  • the screws can be screwed into the blade 20 from the outside of the blade protection device 30 and toward the length direction of the blade 20.
  • the screws are specifically It may be a countersunk head screw to prevent the screw from being exposed from the blade protection device 30 .
  • the end of the blade 20 may have a buckle structure that is engaged with the blade protection device 30.
  • the blade The end of the blade 20 can be in the shape of a groove matching the shape of the inner surface of the blade protection device 30 , and the groove shape can be inserted into the blade protection device 30 , so that the blade 20 and the blade protection device 30 are engaged.
  • the blade protection device 30 may also be integrally formed with the hub 10 or connected detachably.
  • the connection method between the blade protection device 30 and the hub 10 may be the same as the connection method between the blade protection device 30 and the blade 20 , or may be different from the connection method of the blade protection device 30 , which is not limited in the embodiment of the present application.
  • the blade protection device 30 can be detached from the propeller separately, so as to accommodate the propeller and the UAV.
  • the blade protection device 30 may be directly connected to the drive shaft of a driving device such as a motor, so that the blade protection device 30 rotates synchronously with the blade 20 .
  • each blade 20 may be provided with a blade protection device 30 correspondingly.
  • Each blade protection device 30 may extend along the length direction of the corresponding blade 20 . Since each blade 20 is respectively provided with a blade protection device 30 , for each blade protection device 30 , each blade protection device 30 does not need to surround the entire propeller, so that the volume of the entire propeller can be reduced.
  • the blade protection device 30 may be elongated, and the length direction of the elongated blade protection device 30 may extend along the length direction of the blade 20 .
  • the length of the blade protection device 30 is approximately equal to the length of the blade 20, or less than the length of the blade 20, and the width of the blade protection device 30 can be omitted. It is larger than the width of the blade 20, so that the volume of the entire blade protection device 30 is small.
  • the approximate shape of the blade protection device 30 may include at least one of the following: ellipse, rectangle, racetrack, and figure-eight.
  • the shape of the blade protection device 30 is not limited to the above-mentioned shape, and in some other implementations, the blade protection device 30 may be in other elongated shapes.
  • one blade protection device 30 may surround multiple blades 20 , and the blade protection device 30 forms the outermost edge of the propeller. That is to say, a plurality of blades 20 of the propeller share a blade protection device 30, which can also protect the blades 20.
  • the blade protection device 30 can be connected with the hub 10, and can be connected with the end 22 of the blade 20, so that the blade protection device 30 of the large frame The connection points on one side are concentrated at the hub 10 , while the other side is connected to the tip 22 of the blade 20 .
  • the shape of the blade protection device 30 matches the shape of the arrangement of the plurality of blades 20 of the propeller.
  • the number of blades 20 may be N, and the shape of the blade protection device 30 may be roughly N-gon, wherein N may be greater than or equal to three.
  • N may be greater than or equal to three.
  • the blade protection device 30 is in a straight shape.
  • the number of blades 20 is three, and the shape of the blade protection device 30 may be roughly triangular.
  • each blade 20 is located at the corner of the blade protection device 30, for example, when the blade protection device 30 is triangular, the end 22 of the blade 20 is located at the corner of the triangle, when the blade protection device 30 In the case of a rectangle, the tip 22 of the paddle 20 is located at a corner of the rectangle or the like. In this way, the volume of the entire propeller can be minimized, and thus the weight of the entire propeller can be minimized.
  • One side of the blade protection device 30 extending to the end 22 of the blade 20 is arc-shaped.
  • the corner of the blade protector 30 is arc-shaped, so that the outer surface of the entire blade protector 30 is smooth, and when the propeller rotates At this time, the blade protection device 30 will not cause harm to the user or external objects.
  • the windward surface M of the blade 20 includes an upper portion 20 a and a lower portion 20 b distributed along the width direction of the blade 20 , and along the windward direction of the blade 20 , the blade protection device 30 avoids the upper portion 20 a.
  • the so-called windward surface M refers to the direction in which the blade 20 faces the wind when the propeller rotates.
  • the upper part 20a and the lower part 20b may be respectively located on both sides of the centerline (the dotted line shown in FIGS. 1 and 2 ) in the width direction of the blade 20 . That is, the upper portion 20a and the lower portion 20b are divided by the centerline of the blade 20 in the width direction.
  • the surface indicated by the straight arrow in Figure 1 and Figure 2 is the windward side. Because the blade 20 is rotating, the upper part 20a of the blade 20 is in contact with the air first to cut the air, and the blade protection device 30 avoids the upper part 20a so that the blade protection device 30 does not block the upper part 20a of the blade 20, but Try not to affect the blade 20 to cut the air, and under the same driving force, the blade protection device 30 does not affect the lift that the propeller can generate.
  • the widthwise centerline of the blade 20 is located within the plane defined by the blade protection device 30 .
  • the plane defined by the blade protection device 30 is parallel to the rotation plane of the propeller, or the plane defined by the blade protection device 30 is relatively inclined to the rotation plane of the propeller.
  • the plane defined by the blade protection device 30 can be understood as the plane formed by the rotation of the centerline of the cross section of the blade protection device 30 when the propeller rotates (for example, the plane defined by the dotted ellipse in FIG. 1 ).
  • the plane defined by the blade protection device 30 may be parallel to or inclined to the propeller rotation plane, as long as the blade protection device 30 does not block the upper part 20 a of the windward surface of the blade 20 .
  • the propeller of the embodiment of the present application may further include an auxiliary support 40 , and the auxiliary support 40 may connect the hub 10 and the blade protection device 30 .
  • the auxiliary support 40 can be integrally formed or detachably connected with the blade protection device 30 , and the auxiliary support 40 can be detachably connected with the hub 10 or integrally formed.
  • the auxiliary support 40 can also be a plastic part, or an aluminum alloy part, so that the weight of the auxiliary support 40 is relatively light.
  • the auxiliary support 40 may include a plurality, and the plurality of auxiliary supports 40 are arranged symmetrically around the axis of the propeller. An auxiliary support 40 is provided between each adjacent two paddles 20 .
  • the number of auxiliary supports 40 can also be two, and the two auxiliary supports 40 can be respectively arranged between the two paddles 20, and the two auxiliary supports 40 may be perpendicular to both paddles 20 .
  • the number of auxiliary supports 40 can also be three, and one auxiliary support 40 is respectively arranged between two adjacent paddles 20, and each auxiliary support The included angle between the pieces 40 may be 120°.
  • the auxiliary supporting member 40 is also arranged symmetrically to the center, which can make the whole propeller more symmetrical, so that the propeller has a better balance when it rotates, and the problem of propeller tilting due to uneven weight is not easy to occur.
  • each blade protection device 30 may have a symmetrical structure. Because the blades 20 of the propeller generally have a symmetrical structure, therefore, for each blade 20, the structure of the blade protection device 30 arranged around it is the same. Further, a plurality of blade protection devices 30 may be symmetrically arranged about the axis of the hub 10 . In this way, the entire propeller also has a symmetrical structure, which further ensures the structural balance of the propeller.
  • the tip of the paddle 20 may be made of flexible or elastic material, for example, the tip 22 of the paddle 20 is wrapped with rubber or silicone, or even fiber cloth, sponge and the like. And the above-mentioned flexible material or elastic material can be glued on the end 22 of the paddle 20 .
  • the blade guard 30 may comprise a flexible material or an elastic material.
  • the entire paddle protector 30 is made of a slightly harder rubber or silicone material, or the outer wall of the blade protector 30 is made of a slightly harder rubber or silicone material, or the outer wall of the blade protector 30 Covered with flexible materials such as fiber cloth and sponge.
  • the outer sidewall of the blade protection device 30 is designed to be made of a flexible material or an elastic material, or the entire blade protection device 30 is designed to be made of a flexible material or an elastic material, or the end of the blade 20 includes a flexible material or an elastic material, This can further reduce the damage to the user when the propeller rotates, and can effectively improve the safety of the unmanned aerial vehicle.
  • the embodiment of the present application also provides an unmanned aerial vehicle, including: a fuselage, an arm, and a propeller disposed on the arm, wherein the propeller includes: a hub 10 , blades 20 and a blade protection device 30 .
  • the blade 20 is connected to the hub 10 , and the blade 20 includes a connection end connected to the hub 10 and an end 22 away from the hub 10 .
  • the blade protection device 30 at least partially surrounds the end 22 of the blade 20 , and the blade protection device 30 can rotate synchronously with the blade 20 .
  • the unmanned aerial vehicle provided in the embodiment of the present application is provided with a blade protection device, and the blade protection device at least partially surrounds the end of the blade, and the blade protection device can follow the rotation of the propeller, so that the blade protection device and the blade of the propeller The relative position of the blade remains unchanged, no matter how the propeller rotates, the blade protection device can always surround the end of the blade, so as to play the role of blade protection more reliably, preventing the end of the blade from scratching the user or hitting other objects. Improve the safety of unmanned aerial vehicles.
  • the blade guard 30 is connected to the blade 20 .
  • the blade protection device 30 is directly connected to the blade 20 ; and/or, the blade protection device 30 is directly connected to the hub 10 .
  • the blade protection device 30 surrounds the blade 20 along the length direction of the blade 20 ; or, the blade protection device 30 surrounds at least part of the blade 20 along the length direction of the blade 20 .
  • the blade protection device 30 surrounds the blade 20 along the length direction of the blade 20; the blade protection device 30 is connected with the connecting end 21 of the blade 20, and the blade protection device 30 extends to end 22 ; alternatively, a blade protector 30 is connected to the hub 10 , and the blade protector 30 extends to the end 22 of the blade 20 .
  • the blade 20 also includes a middle portion 23 between the connecting end 21 of the blade 20 and the end 22 of the blade 20; one side of the blade protection device 30 is connected with the middle portion 23 of the blade 20, and the blade The other side of the blade guard 30 extends to the tip 22 of the blade 20 .
  • the blade guard 30 is in contact with the tip 22 of the blade 20 .
  • a blade guard 30 is attached to the tip 22 of the blade 20 .
  • the blade protection device 30 is integrally formed with the end 22 of the blade 20 or is detachably connected.
  • the blade protection device 30 is integrally formed with the blade 20 or connected detachably;
  • the blade protection device 30 is integrally formed with the hub 10 or connected detachably.
  • each blade 20 is correspondingly provided with a blade protection device 30 .
  • the blade protection device 30 is elongated, and the length direction of the elongated blade protection device 30 extends along the length direction of the blade 20 .
  • the approximate shape of the blade protection device 30 includes at least one of the following: ellipse, rectangle, racetrack, and figure-eight.
  • the windward surface of the blade 20 includes an upper portion 20a and a lower portion 20b distributed along the width direction of the blade 20, and along the windward direction of the blade 20, the blade protection device 30 avoids the upper portion 20a.
  • the upper portion 20a and the lower portion 20b are respectively located on two sides of the centerline of the blade 20 in the width direction.
  • the widthwise centerline of the blade 20 is located within the plane defined by the blade protection device 30 .
  • the plane defined by the blade protection device 30 is parallel to the rotation plane of the propeller, or the plane defined by the blade protection device 30 is relatively inclined to the rotation plane of the propeller.
  • a single blade guard 30 surrounds multiple blades 20, the blade guard 30 forming the outermost edge of the propeller.
  • the shape of the blade guard 30 matches the shape in which the plurality of blades 20 of the propeller are arranged.
  • the tip 22 of each blade 20 is located at a corner of the blade guard 30 .
  • the side of the blade protection device 30 extending to the end of the blade 20 is arc-shaped.
  • the surface of the blade protection device 30 away from the blade 20 is a plane or a convex arc surface.
  • the cross-sectional shape of the blade protection device 30 includes at least one of the following: circular, semicircular, elliptical, and rectangular.
  • an auxiliary support 40 is further included, and the auxiliary support 40 connects the hub 10 and the blade protection device 30 .
  • auxiliary support member 40 is detachably connected or integrally formed with the hub 10;
  • the auxiliary support member 40 is detachably connected or integrally formed with the blade protection device 30 .
  • the auxiliary support 40 includes a plurality of auxiliary supports 40 arranged symmetrically around the axis of the propeller.
  • an auxiliary support member 40 is provided between each adjacent two blades 20 .
  • each blade protection device 30 has a symmetrical structure.
  • a plurality of blade protection devices 30 are arranged symmetrically with respect to the axis of the hub 10 .
  • the tip 22 of the paddle 20 is made of flexible or elastic material.
  • the blade protection device 30 is made of flexible material or elastic material.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection of devices or units, which may be electrical, mechanical or other forms.

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  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
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Abstract

一种螺旋桨及无人飞行器,其中,螺旋桨包括桨毂(10);桨叶(20),与所述桨毂(10)连接,所述桨叶(20)包括与所述桨毂(10)连接的连接端,以及远离所述桨毂(10)的末端;桨叶保护装置(30),至少部分包围所述桨叶(20)的末端,且所述桨叶保护装置(30)能够跟随所述桨叶(20)同步转动。本技术方案提供的螺旋桨及无人飞行器,能够有效防止桨叶的末端划伤用户或者末端撞击到其他物体,提高了无人飞行器的使用安全性。

Description

螺旋桨及无人飞行器 技术领域
本申请实施例涉及螺旋桨结构设计技术领域,尤其涉及螺旋桨及无人飞行器。
背景技术
当无人飞行器在使用过程中发生意外,例如突然跌落,或者意外启动,由于螺旋桨在高速旋转,螺旋桨的末端很容易对人或其他物体造成严重割伤。因此,在螺旋桨上设置桨叶保护装置显得尤其重要,以降低用户使用无人飞行器的使用风险。
发明内容
鉴于上述问题,提出了本申请以解决上述问题或至少部分地解决上述问题的螺旋桨及无人飞行器。
本申请第一方面实施例提供一种螺旋桨,包括:
桨毂;
桨叶,与所述桨毂连接,所述桨叶包括与所述桨毂连接的连接端,以及远离所述桨毂的末端;
桨叶保护装置,至少部分包围所述桨叶的末端,且所述桨叶保护装置能够跟随所述桨叶同步转动。
本申请第二方面实施例提供一种无人飞行器,包括:机身、机臂,以及设于所述机臂的螺旋桨,其中,所述螺旋桨包括:
桨毂;
桨叶,与所述桨毂连接,所述桨叶包括与所述桨毂连接的连接端,以及远离所述桨毂的末端;
桨叶保护装置,至少部分包围所述桨叶的末端,且所述桨叶保护装置能够跟随所述桨叶同步转动。
本申请实施例提供的螺旋桨及无人飞行器,通过设置桨叶保护装置,并且桨叶保护装置至少部分包围桨叶的末端,且桨叶保护装置能够跟随螺旋桨转动,使得桨叶保护装置与螺旋桨的桨叶的相对位置不变,无论螺旋桨如何转动,桨叶保护装置始终能够包围桨叶的末端,从而更加可靠地起到桨叶保护的作用,防止桨叶的末端划伤用户或者末端撞击到其他物体。
附图说明
为了更清楚地说明本申请实施例中的技术方案,下面将对实施例描述中所需要使用的附图作一简单地介绍,显而易见地,下面描述中的附图是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为本申请实施例提供的第一种螺旋桨的结构示意图;
图2为本申请实施例提供的第二种螺旋桨的结构示意图;
图3为本申请实施例提供的第三种螺旋桨的结构示意图;
图4为本申请实施例提供的第四种螺旋桨的结构示意图;
图5为本申请实施例提供的第五种螺旋桨的结构示意图;
图6为本申请实施例提供的第六种螺旋桨的结构示意图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行清楚地描述,显然,所描述的实施例仅仅是本申请一部分实施例,而不是全部的实施例。基于本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
除非另有定义,本文所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同。本文中在本申请的说明书中所使用的术语只是为了描述具体的实施例的目的,不是旨在于限制本申请。
在通篇说明书及权利要求当中所提及的“包括”为一开放式用语,故应解释成“包括但不限定于”。“大致”是指在可接收的误差范围内,本领域技 术人员能够在一定误差范围内解决所述技术问题,基本达到所述技术效果。
此外,“连接”一词在此包含任何直接及间接的连接手段。因此,若文中描述一第一装置连接于一第二装置,则代表所述第一装置可直接连接于所述第二装置,或通过其它装置间接地连接至所述第二装置。
应当理解,本文中使用的术语“及/或、和/或”仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A1及/或B1,可以表示:单独存在A1,同时存在A1和B1,单独存在B1这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
下面结合附图,对本申请的一些实施方式作详细说明。在不相互矛盾的情况下,本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
发明人经过创造性的劳动发现,无人机在使用过程中发生意外,由于螺旋桨的高速旋转,桨叶的末端是最容易对人或其他物体造成严重割伤部位,但相关技术中的,桨叶保护装置,结构复杂,重量较重,会给无人飞行器带来较大的负载负担,降低了无人飞行器的负载能力。
基于上述相关技术中的技术问题,本申请实施例通过将桨叶保护装置设计成一种轻型结构,从而又保证桨叶的末端能够被包围住,使得当螺旋桨发生碰撞时,确保桨叶的末端不会划到用户皮肤表面,减弱桨叶的伤害,提高无人飞行器的使用安全,以及提高用户体验。
图1为本申请实施例提供的第一种螺旋桨的结构示意图;图2为本申请实施例提供的第二种螺旋桨的结构示意图;图3为本申请实施例提供的第三种螺旋桨的结构示意图;图4为本申请实施例提供的第四种螺旋桨的结构示意图;图5为本申请实施例提供的第五种螺旋桨的结构示意图;图6为本申请实施例提供的第六种螺旋桨的结构示意图。请参照附图1~附图6,本申请实施例提供的螺旋桨包括桨毂10、桨叶20和桨叶保护装置30。
其中,桨叶20与桨毂10连接,桨叶20包括与桨毂10连接的连接端 21,以及远离桨毂10的末端22。一个螺旋桨可以包括多个桨叶20,其中,多个是指两个,或两个以上,多个桨叶20可以以桨毂10为中心对称布置,桨毂10可以用于与电机等驱动装置连接,在驱动装置的驱动下,桨毂10连同桨叶20一起转动。
桨叶保护装置30至少部分包围桨叶20的末端22,且桨叶保护装置30能够跟随桨叶20同步转动。
具体的,在本申请实施例中,每个螺旋桨可以具有至少两个桨叶20,例如可以为两个、三个、四个等。而桨叶20的末端22可以为桨叶20上远离桨毂10的一端的预设长度范围内,均可以称之为桨叶20的末端22。
而桨叶保护装置30至少部分包围桨叶20的末端22,是指桨叶保护装置30可以仅仅包围桨叶20的末端22,也可以包围桨叶20的末端22,且还可以包围其他位置。而桨叶保护装置30的包围范围可以是至少在桨叶20的转动平面上包围桨叶20的末端22。
在本申请实施例中,桨叶保护装置30可以为塑料,或者橡胶、或者铝合金等质量较轻的材料制成,从而使得桨叶保护装置30的重量可以尽量较轻,进而使得整个螺旋桨的重量较轻,满足无人飞行器的轻量化要求。并且,可以理解的是,螺旋桨的重量越重,转动惯量越大,对螺旋桨的加速和减速越不可控。因此,桨叶保护装置的重量可以尽量小,以避免过多增加螺旋桨的重量。
在本申请实施例中,桨叶保护装置30的横截面形状可以包括以下至少一种:圆形、半圆形、椭圆形、矩形,本申请实施例不做限定。桨叶保护装置30可以为杆状部件弯折形成的特定形状,或者,在一些实施例中,桨叶保护装置30为多根杆部件拼接而成。
另外,桨叶保护装置30可以包括靠近桨叶的一侧表面,以及远离桨叶的一侧表面。桨叶保护装置30远离桨叶20的一侧表面可以为平面或者凸弧面。当桨叶保护装置30远离桨叶20的一侧表面为平面时,该平面可 以基本垂直于螺旋桨的旋转平面。如图1~图3所示,桨叶保护装置30远离桨叶20的一侧表面为凸弧面,而如图4~图6所示,桨叶保护装置30远离桨叶20的一侧表面为平面。由于螺旋桨转动时是垂直于螺旋桨的旋转平面的表面对用户或物体产生切割,且本申请实施例中的桨叶保护装置30是跟随桨叶20一起转动的,而桨叶保护装置30远离桨叶20的一侧表面为平面或凸弧面,因此与用户或物体接触的表面不存在尖锐之处,进而可以更进一步防止跟随桨叶20一起转动的桨叶保护装置30割伤用户或其他物体表面。
本申请实施例提供的螺旋桨,通过设置桨叶保护装置,并且桨叶保护装置至少部分包围桨叶的末端,且桨叶保护装置能够跟随螺旋桨转动,使得桨叶保护装置与螺旋桨的桨叶的相对位置不变,无论螺旋桨如何转动,桨叶保护装置始终能够包围桨叶的末端,从而更加可靠地起到桨叶保护的作用,防止桨叶的末端划伤用户或者末端撞击到其他物体。
在本申请实施例中,桨叶保护装置30可以与桨叶20连接,而使得桨叶保护装置30可以跟随桨叶20同步转动。更进一步的,桨叶保护装置30可以至少与桨叶20的末端22连接。具体而言,桨叶保护装置30可以与桨叶20的末端22一体成型或可拆卸连接。
由于桨叶20是与桨毂10连接的,桨叶保护装置30与桨叶20连接可以包括:桨叶保护装置30与桨叶20直接连接,也可以包括桨叶保护装置30与桨毂10直接连接,而实现桨叶保护装置30与桨叶20间接连接。
桨叶保护装置30可以与桨叶20的末端22接触,以在使得桨叶保护装置30与桨叶20的末端22之间不存在间隙,可以避免用户无意伸入桨叶保护装置30与桨叶20的末端22之间的间隙处,而被桨叶2的末端22割伤,从而更大程度上保证了无人飞行器的使用安全。
更进一步的,桨叶保护装置30可以与桨叶20的末端22连接,以使得桨叶保护装置30对桨叶20的末端22之间可靠固定,避免螺旋桨在旋 转过程中,桨叶保护装置30与桨叶20的末端22之间产生间隙。
在一些示例性实施例中,如图1~图4所示,桨叶保护装置30可以沿桨叶20的长度方向包围桨叶20,以使得桨叶20在180°范围内被完整可靠保护。
具体的,为实现桨叶保护装置30沿桨叶20的长度方向包围桨叶20,在一些实施例中,如图1~图4所示,桨叶保护装置30可以与桨毂10连接,桨叶保护装置30延伸至桨叶20的末端22。可以理解的是,在本实施例中,桨叶保护装置30可以与桨叶20的末端22连接,或者不连接,只要桨叶保护装置30延伸至桨叶20的末端22即可。优选的,如图1~图4所示,桨叶保护装置30与桨毂10和桨叶20的末端22分别连接,以使得桨叶保护装置30与螺旋桨可以至少具有两个连接点,从而使得桨叶保护装置30与螺旋桨之间的连接较为稳定。
在其他一些实施例中,桨叶保护装置30可以仅直接与桨叶20直接连接。在一些实施例中,桨叶保护装置30可以与桨叶20的连接端21连接,且桨叶保护装置30延伸至桨叶20的末端22。可以理解的是,在本实施例中,桨叶保护装置30可以与桨叶20的末端22连接,或者不连接,只要桨叶保护装置30延伸至桨叶20的末端22即可。优选的,桨叶保护装置30与桨叶20的连接端21和桨叶20的末端22分别连接,以使得桨叶保护装置30的连接可靠稳定。
具体的,桨叶20还可以包括连接桨叶20的连接端21和桨叶20的末端22之间的中部23。需要说明的是,在本申请实施例中,中部23并不是特指桨叶20长度方向的中间位置,而是除连接端21和末端22之外的其他部位均可以称为中部23。
在其他一些实施例中,桨叶保护装置30可以沿桨叶20的长度方向包围桨叶20的至少部分,如图5~图6所示,桨叶保护装置30的一侧可以与桨叶20的中部23连接,桨叶保护装置30的另一侧可以延伸至桨叶20的 末端22。类似的,可以理解的是,在本实施例中,桨叶保护装置30可以与桨叶20的末端22连接,或者不连接,只要桨叶保护装置30延伸至桨叶20的末端22即可。优选的,桨叶保护装置30与桨叶20的中部23和桨叶20的末端22分别连接,以使得桨叶保护装置30的连接可靠稳定。
当桨叶保护装置30与桨叶20的连接端21或桨毂10连接,且延伸至桨叶20的末端22时,桨叶保护装置30包围桨叶20,使得桨叶保护装置30在桨叶20的旋转平面内对桨叶20全面保护。而当桨叶保护装置30与桨叶20的中部23连接,并延伸至桨叶20的末端22时,整个桨叶保护装置30包围部分桨叶20,使得桨叶保护装置30在对桨叶20的末端22可靠保护,并且整体尺寸也较小,提高螺旋桨的轻量化程度,减小螺旋桨的转动惯量。本领域技术人员可以根据实际需要,选择桨叶保护装置30与桨叶20安装方式和安装位置,本申请实施例不做特别限定,只要桨叶保护装置30至少能够包围桨叶20的末端22即可。
具体的,桨叶保护装置30可以与桨叶20一体成型,或者与桨叶20可拆卸连接。例如,桨叶20为塑料材料制成,桨叶保护装置30可以与桨叶20一体注塑成型,以降低加工成本,并且,提高生产效率。在一些实施例中,桨叶保护装置30也可以与桨叶20可拆卸地连接,例如桨叶保护装置30与桨叶20通过螺钉或者卡扣连接。
值得注意的是,桨叶保护装置30可以与桨叶20的末端22可拆卸地连接。例如,桨叶保护装置30可以与桨叶20的末端22通过螺钉连接,或者卡扣连接等。举例来说,当桨叶保护装置30与桨叶20的末端22通过螺钉连接时,螺钉可以从桨叶保护装置30的外侧,并朝桨叶20的长度方向拧入桨叶20内,螺钉具体可以为沉头螺钉,以避免螺钉从桨叶保护装置30上外露。而当桨叶保护装置30与桨叶20的末端22通过卡扣连接时,桨叶20的末端可以具有与桨叶保护装置30卡接的卡扣结构,在一示例性实施例中,桨叶20的末端可以呈与桨叶保护装置30的内侧表面形状 匹配的凹槽状,该凹槽状可以卡入桨叶保护装置30,以使得桨叶20与桨叶保护装置30卡接。
在一些实施例中,桨叶保护装置30也可以与桨毂10一体成型或可拆卸连接。而桨叶保护装置30与桨毂10的连接方式可以与桨叶保护装置30与桨叶20的连接方式相同,也可以与桨叶保护装置30的连接方式不同,本申请实施例并不限定。
当桨叶20与桨叶保护装置30可拆卸连接时,可以使得桨叶保护装置30能够单独从螺旋桨上拆卸下来,以便于收纳螺旋桨及无人飞行器。
当然,在其他一些实施例中,桨叶保护装置30可以直接与电机等驱动装置的驱动轴连接,而使得桨叶保护装置30跟随桨叶20同步转动。
如图1~图2,以及图5~图6所示,在一些实施例中,每个桨叶20均可以对应设有一个桨叶保护装置30。每个桨叶保护装置30可以沿该对应的桨叶20的长度方向延伸。由于每个桨叶20分别对应设置一个桨叶保护装置30,对于每个桨叶保护装置30来讲,每个桨叶保护装置30不必包围整个螺旋桨,因此使得整个螺旋桨的体积可以较小。
进一步的,在本实施例中,桨叶保护装置30可以呈长形,且长形的桨叶保护装置30的长度方向可以沿桨叶20的长度方向延伸。如图1~图2,以及图5~图6所示,桨叶保护装置30的长度大致与桨叶20的长度相等,或者小于桨叶20的长度,而桨叶保护装置30的宽度可以略大于桨叶20的宽度,而使得整个桨叶保护装置30体积较小。在一些具体实施例中,桨叶保护装置30的大致形状可以包括以下至少一种:椭圆形、长方形、跑道形、8字形。当然,桨叶保护装置30的形状也并不限于为上述的形状,在其他一些实施中,桨叶保护装置30可以为其他一些长形的形状。
而在一些可选的实施例中,如图3或图4所示,一个桨叶保护装置30可以包围多个桨叶20,桨叶保护装置30形成螺旋桨的最外缘。也就是说,螺旋桨的多个桨叶20共用一个桨叶保护装置30,同样也可以实现对桨叶 20的保护。当多个桨叶20共用一个桨叶保护装置30时,桨叶保护装置30可以与桨毂10连接,并且,可以与桨叶20的末端22连接,以使得大框架的桨叶保护装置30的一侧连接点集中在桨毂10处,而另一侧连接至桨叶20的末端22。
在本实施例中,桨叶保护装置30的形状与螺旋桨的多个桨叶20所排布的形状相匹配。例如,桨叶20的数量可以为N个,桨叶保护装置30的形状可以大致为N边形,其中,N可以大于或等于3。举例来说,如图3所示,当桨叶20的数量为两个时,整个桨叶保护装置30包围整个螺旋桨,整个螺旋桨呈一字形,对应的,桨叶保护装置30呈一字形。如图4所示,桨叶20的数量为三个,而桨叶保护装置30的形状则大致可以为三角形。
进一步的,各桨叶20的末端22位于桨叶保护装置30的转角处,例如,当桨叶保护装置30为三角形时,桨叶20的末端22位于三角形的转角处,当桨叶保护装置30为矩形时,桨叶20的末端22位于矩形的转角处等。这样一来,可以使得整个螺旋桨的体积最小,进而可以使得整个螺旋桨的重量最小。
桨叶保护装置30延伸至桨叶20的末端22的一侧为弧形。特别的,对于桨叶20的末端22位于桨叶保护装置30的转角处时,桨叶保护装置30的转角处为弧形,这样,使得整个桨叶保护装置30的外侧表面圆滑,在螺旋桨旋转时,桨叶保护装置30也不会对用户或外部物体造成伤害。
如图1和图2所示,桨叶20的迎风面M包括沿桨叶20的宽度方向分布的上部20a和下部20b,沿桨叶20的迎风方向,桨叶保护装置30避让上部20a。所谓迎风面M是指螺旋桨在旋转时,桨叶20面对风的方向。上部20a和下部20b可以分别位于桨叶20的宽度方向的中线(如图1和图2所示的点画线)的两侧。也就是说,上部20a和下部20b是通过桨叶20的宽度方向的中线所划分的。如图1和图2中直线箭头所指的表面为迎风面。由于桨叶20在旋转时,桨叶20的上部20a先与空气接触,对空气 进行切割,而桨叶保护装置30避让上部20a可以使得桨叶保护装置30不遮挡桨叶20的上部20a,而尽量不影响桨叶20切割空气,在同等驱动力下,使得桨叶保护装置30不影响螺旋桨所能产生的升力。
进一步的,桨叶20宽度方向的中线位于桨叶保护装置30所限定的平面内。桨叶保护装置30所限定的平面与螺旋桨的旋转平面平行,或者,桨叶保护装置30所限定的平面螺旋桨的旋转平面相对倾斜。其中,桨叶保护装置30所限定的平面可以理解为螺旋桨在旋转时,桨叶保护装置30的横截面的中心线旋转所形成的平面(例如,如图1中虚线椭圆所确定的平面)。桨叶保护装置30所限定的平面可以与螺旋桨旋转平面平行或倾斜,只要桨叶保护装置30不遮挡桨叶20的迎风面的上部20a即可。
如图3和图4所示,在一些实施例中,本申请实施例的螺旋桨还可以包括辅助支撑件40,辅助支撑件40可以连接桨毂10和桨叶保护装置30。辅助支撑件40可以与桨叶保护装置30一体成型或可拆卸连接,而辅助支撑件40可以与桨毂10可拆卸连接,或者一体成型。辅助支撑件40同样也可以为塑料件,或者铝合金件,以使得辅助支撑件40的重量也较轻。
辅助支撑件40可以包括多个,多个辅助支撑件40以螺旋桨的轴线为中心对称设置。各相邻的两个桨叶20之间均设置有一个辅助支撑件40。
如图3所示,当桨叶20包括两个时,辅助支撑件40的数量也可以为两个,两个辅助支撑件40可以分别设置在两个桨叶20之间,两个辅助支撑件40可以与两个桨叶20垂直。如图4所示,当桨叶20包括三个时,辅助支撑件40的数量也可以为三个,在两个相邻的桨叶20之间各设置有一个辅助支撑件40,各个辅助支撑件40之间的夹角可以为120°。辅助支撑件40也呈中心对称设置,能够使得整个螺旋桨的对称性较好,以使得螺旋桨旋转时平衡性较好,不易出现由于重量不均而导致螺旋桨倾斜的问题。
在本申请的实施例中,各桨叶保护装置30可以为对称结构。由于螺 旋桨的桨叶20一般为对称结构,因此,对于每个桨叶20来讲,设置在其周围的桨叶保护装置30的结构相同。进一步的,多个桨叶保护装置30可以以桨毂10轴线对称设置。如此一来,整个螺旋桨也呈对称结构,进一步保证螺旋桨的结构平衡性。
在一些实施例中,桨叶20的末端可以包括柔性材料或弹性材料,例如,桨叶20的末端22包裹有橡胶或硅胶,甚至是纤维布料、海绵等。而上述的柔性材料或弹性材料可以粘接在桨叶20的末端22。类似的,桨叶保护装置30可以包括柔性材料或弹性材料。整个桨叶保护装置30为质地稍硬的橡胶或硅胶材料制成,或者,桨叶保护装置30的外侧壁由质地稍硬的橡胶或硅胶材料制成,或者,桨叶保护装置30的外侧壁贴覆有纤维布料、海绵等柔性材料。通过桨叶保护装置30的外侧壁设计成柔性材料或弹性材料制成,或者桨叶保护装置30整体设计成柔性材料或弹性材料制成,或者,桨叶20的末端包括柔性材料或弹性材料,这样可以进一步降低螺旋桨旋转时带给用户的伤害,能够有效提高无人飞行器的使用安全性。
本申请实施例还提供一种无人飞行器,包括:机身、机臂,以及设于机臂的螺旋桨,其中,螺旋桨包括:桨毂10、桨叶20和桨叶保护装置30。
桨叶20与桨毂10连接,桨叶20包括与桨毂10连接的连接端,以及远离桨毂10的末端22。桨叶保护装置30至少部分包围桨叶20的末端22,且桨叶保护装置30能够跟随桨叶20同步转动。
本申请实施例提供的无人飞行器,通过设置桨叶保护装置,并且桨叶保护装置至少部分包围桨叶的末端,且桨叶保护装置能够跟随螺旋桨转动,使得桨叶保护装置与螺旋桨的桨叶的相对位置不变,无论螺旋桨如何转动,桨叶保护装置始终能够包围桨叶的末端,从而更加可靠地起到桨叶保护的作用,防止桨叶的末端划伤用户或者末端撞击到其他物体,提高了无人飞行器的使用安全性。
在一些实施例中,桨叶保护装置30与桨叶20连接。
在一些实施例中,桨叶保护装置30与桨叶20直接连接;及/或,桨叶保护装置30与桨毂10直接连接。
在一些实施例中,桨叶保护装置30沿桨叶20的长度方向包围桨叶20;或者,桨叶保护装置30沿桨叶20的长度方向包围桨叶20的至少部分。
在一些实施例中,桨叶保护装置30沿桨叶20的长度方向包围桨叶20;桨叶保护装置30与桨叶20的连接端21连接,且桨叶保护装置30延伸至桨叶20的末端22;或者,桨叶保护装置30与桨毂10连接,桨叶保护装置30延伸至桨叶20的末端22。
在一些实施例中,桨叶20还包括连接桨叶20的连接端21和桨叶20的末端22之间的中部23;桨叶保护装置30的一侧与桨叶20的中部23连接,桨叶保护装置30的另一侧延伸至桨叶20的末端22。
在一些实施例中,桨叶保护装置30与桨叶20的末端22接触。
在一些实施例中,桨叶保护装置30与桨叶20的末端22连接。
在一些实施例中,桨叶保护装置30与桨叶20的末端22一体成型或者可拆卸连接。
在一些实施例中,桨叶保护装置30与桨叶20一体成型或可拆卸连接;
及/或,桨叶保护装置30与桨毂10一体成型或可拆卸连接。
在一些实施例中,每个桨叶20均对应设有一个桨叶保护装置30。
在一些实施例中,桨叶保护装置30呈长形,且长形的桨叶保护装置30的长度方向沿桨叶20的长度方向延伸。
在一些实施例中,桨叶保护装置30的大致形状包括以下至少一种:椭圆形、长方形、跑道形、8字形。
在一些实施例中,桨叶20的迎风面包括沿桨叶20的宽度方向分布的上部20a和下部20b,沿桨叶20的迎风方向,桨叶保护装置30避让上部 20a。
在一些实施例中,上部20a和下部20b分别位于桨叶20的宽度方向的中线的两侧。
在一些实施例中,桨叶20宽度方向的中线位于桨叶保护装置30所限定的平面内。
在一些实施例中,桨叶保护装置30所限定的平面与螺旋桨的旋转平面平行,或者,桨叶保护装置30所限定的平面螺旋桨的旋转平面相对倾斜。
在一些实施例中,一个桨叶保护装置30包围多个桨叶20,桨叶保护装置30形成螺旋桨的最外缘。
在一些实施例中,桨叶保护装置30的形状与螺旋桨的多个桨叶20所排布的形状相匹配。
在一些实施例中,各桨叶20的末端22位于桨叶保护装置30的转角处。
在一些实施例中,桨叶保护装置30延伸至桨叶20末端的一侧为弧形。
在一些实施例中,桨叶保护装置30远离桨叶20的一侧表面为平面或者凸弧面。
在一些实施例中,桨叶保护装置30的横截面形状包括以下至少一种:圆形、半圆形、椭圆形、矩形。
在一些实施例中,还包括辅助支撑件40,辅助支撑件40连接桨毂10和桨叶保护装置30。
在一些实施例中,辅助支撑件40与桨毂10可拆卸连接或者一体成型;
及/或,辅助支撑件40与桨叶保护装置30可拆卸连接或者一体成型。
在一些实施例中,辅助支撑件40包括多个,多个辅助支撑件40以螺旋桨的轴线为中心对称设置。
在一些实施例中,各相邻的两个桨叶20之间均设置有一个辅助支撑 件40。
在一些实施例中,各桨叶保护装置30为对称结构。
在一些实施例中,多个桨叶保护装置30以桨毂10轴线对称设置。
在一些实施例中,桨叶20的末端22为柔性材料或弹性材料制成。
在一些实施例中,桨叶保护装置30为柔性材料或弹性材料制成。
需要说明的是,本申请实施例提供的无人飞行器中的螺旋桨的结构和功能与上述实施例所提供的螺旋桨相同,具体可以参照上述实施例对螺旋桨的描述,本实施例中不再赘述。
在本申请所提供的几个实施例中,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
最后应说明的是:以上各实施例仅用以说明本申请的技术方案,而非对其限制;尽管参照前述各实施例对本申请进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本申请各实施例技术方案的范围。

Claims (62)

  1. 一种螺旋桨,其特征在于,包括:
    桨毂;
    桨叶,与所述桨毂连接,所述桨叶包括与所述桨毂连接的连接端,以及远离所述桨毂的末端;
    桨叶保护装置,至少部分包围所述桨叶的末端,且所述桨叶保护装置能够跟随所述桨叶同步转动。
  2. 根据权利要求1所述的螺旋桨,其特征在于,所述桨叶保护装置与所述桨叶连接。
  3. 根据权利要求2所述的螺旋桨,其特征在于,所述桨叶保护装置与所述桨叶直接连接;
    及/或,所述桨叶保护装置与所述桨毂直接连接。
  4. 根据权利要求1所述的螺旋桨,其特征在于,所述桨叶保护装置沿所述桨叶的长度方向包围所述桨叶;
    或者,所述桨叶保护装置沿所述桨叶的长度方向包围所述桨叶的至少部分。
  5. 根据权利要求4所述的螺旋桨,其特征在于,所述桨叶保护装置沿所述桨叶的长度方向包围所述桨叶;
    所述桨叶保护装置与所述桨叶的连接端连接,且所述桨叶保护装置延伸至所述桨叶的末端;
    或者,所述桨叶保护装置与所述桨毂连接,所述桨叶保护装置延伸至所述桨叶的末端。
  6. 根据权利要求4所述的螺旋桨,其特征在于,所述桨叶还包括连接所述桨叶的连接端和所述桨叶的末端之间的中部;
    所述桨叶保护装置的一侧与所述桨叶的中部连接,所述桨叶保护装置的另一侧延伸至所述桨叶的末端。
  7. 根据权利要求1所述的螺旋桨,其特征在于,所述桨叶保护装置与所述桨叶的末端接触。
  8. 根据权利要求7所述的螺旋桨,其特征在于,所述桨叶保护装置与所述桨叶的末端连接。
  9. 根据权利要求8所述的螺旋桨,其特征在于,所述桨叶保护装置与所述桨叶的末端一体成型或者可拆卸连接。
  10. 根据权利要求5所述的螺旋桨,其特征在于,所述桨叶保护装置与所述桨叶一体成型或可拆卸连接;
    及/或,所述桨叶保护装置与所述桨毂一体成型或可拆卸连接。
  11. 根据权利要求1所述的螺旋桨,其特征在于,每个所述桨叶均对应设有一个所述桨叶保护装置。
  12. 根据权利要求11所述的螺旋桨,其特征在于,所述桨叶保护装置呈长形,且长形的所述桨叶保护装置的长度方向沿所述桨叶的长度方向延伸。
  13. 根据权利要求12所述的螺旋桨,其特征在于,所述桨叶保护装置的大致形状包括以下至少一种:椭圆形、长方形、跑道形、8字形。
  14. 根据权利要求1所述的螺旋桨,其特征在于,所述桨叶的迎风面包括沿所述桨叶的宽度方向分布的上部和下部,沿所述桨叶的迎风方向,所述桨叶保护装置避让所述上部。
  15. 根据权利要求14所述的螺旋桨,其特征在于,所述上部和所述下部分别位于所述桨叶的宽度方向的中线的两侧。
  16. 根据权利要求14所述的螺旋桨,其特征在于,所述桨叶宽度方向的中线位于所述桨叶保护装置所限定的平面内。
  17. 根据权利要求1所述的螺旋桨,其特征在于,所述桨叶保护装置所限定的平面与所述螺旋桨的旋转平面平行,或者,所述桨叶保护装置所限定的平面所述螺旋桨的旋转平面相对倾斜。
  18. 根据权利要求1所述的螺旋桨,其特征在于,一个所述桨叶保护装置包围多个所述桨叶,所述桨叶保护装置形成所述螺旋桨的最外缘。
  19. 根据权利要求18所述的螺旋桨,其特征在于,所述桨叶保护装置的形状与多个所述桨叶所排布的形状相匹配。
  20. 根据权利要求19所述的螺旋桨,其特征在于,各所述桨叶的末端位于所述桨叶保护装置的转角处。
  21. 根据权利要求1所述的螺旋桨,其特征在于,所述桨叶保护装置延伸至所述桨叶末端的一侧为弧形。
  22. 根据权利要求1所述的螺旋桨,其特征在于,所述桨叶保护装置远离所述桨叶的一侧表面为平面或者凸弧面。
  23. 根据权利要求22所述的螺旋桨,其特征在于,所述桨叶保护装置的横截面形状包括以下至少一种:圆形、半圆形、椭圆形、矩形。
  24. 根据权利要求1所述的螺旋桨,其特征在于,还包括辅助支撑件,所述辅助支撑件连接所述桨毂和所述桨叶保护装置。
  25. 根据权利要求24所述的螺旋桨,其特征在于,所述辅助支撑件与所述桨毂可拆卸连接或者一体成型;
    及/或,所述辅助支撑件与所述桨叶保护装置可拆卸连接或者一体成型。
  26. 根据权利要求24所述的螺旋桨,其特征在于,所述辅助支撑件包括多个,多个辅助支撑件以所述螺旋桨的轴线为中心对称设置。
  27. 根据权利要求26所述的螺旋桨,其特征在于,各相邻的两个所述桨叶之间均设置有一个所述辅助支撑件。
  28. 根据权利要求1所述的螺旋桨,其特征在于,各所述桨叶保护装置为对称结构。
  29. 根据权利要求1所述的螺旋桨,其特征在于,多个所述桨叶保护装置以所述桨毂轴线对称设置。
  30. 根据权利要求1所述的螺旋桨,其特征在于,所述桨叶的末端包括柔性材料或弹性材料。
  31. 根据权利要求1所述的螺旋桨,其特征在于,所述桨叶保护装置包括柔性材料或弹性材料。
  32. 一种无人飞行器,其特征在于,包括:机身、机臂,以及设于所述机臂的螺旋桨,其中,所述螺旋桨包括:
    桨毂;
    桨叶,与所述桨毂连接,所述桨叶包括与所述桨毂连接的连接端,以及远离所述桨毂的末端;
    桨叶保护装置,至少部分包围所述桨叶的末端,且所述桨叶保护装置能够跟随所述桨叶同步转动。
  33. 根据权利要求32所述的无人飞行器,其特征在于,所述桨叶保护装置与所述桨叶连接。
  34. 根据权利要求33所述的无人飞行器,其特征在于,所述桨叶保护装置与所述桨叶直接连接;
    及/或,所述桨叶保护装置与所述桨毂直接连接。
  35. 根据权利要求32所述的无人飞行器,其特征在于,所述桨叶保护装置沿所述桨叶的长度方向包围所述桨叶;
    或者,所述桨叶保护装置沿所述桨叶的长度方向包围所述桨叶的至少部分。
  36. 根据权利要求35所述的无人飞行器,其特征在于,所述桨叶保护装置沿所述桨叶的长度方向包围所述桨叶;
    所述桨叶保护装置与所述桨叶的连接端连接,且所述桨叶保护装置延伸至所述桨叶的末端;
    或者,所述桨叶保护装置与所述桨毂连接,所述桨叶保护装置延伸至 所述桨叶的末端。
  37. 根据权利要求35所述的无人飞行器,其特征在于,所述桨叶还包括连接所述桨叶的连接端和所述桨叶的末端之间的中部;
    所述桨叶保护装置的一侧与所述桨叶的中部连接,所述桨叶保护装置的另一侧延伸至所述桨叶的末端。
  38. 根据权利要求32所述的无人飞行器,其特征在于,所述桨叶保护装置与所述桨叶的末端接触。
  39. 根据权利要求38所述的无人飞行器,其特征在于,所述桨叶保护装置与所述桨叶的末端连接。
  40. 根据权利要求39所述的无人飞行器,其特征在于,所述桨叶保护装置与所述桨叶的末端一体成型或者可拆卸连接。
  41. 根据权利要求36所述的无人飞行器,其特征在于,所述桨叶保护装置与所述桨叶一体成型或可拆卸连接;
    及/或,所述桨叶保护装置与所述桨毂一体成型或可拆卸连接。
  42. 根据权利要求32所述的无人飞行器,其特征在于,每个所述桨叶均对应设有一个所述桨叶保护装置。
  43. 根据权利要求42所述的无人飞行器,其特征在于,所述桨叶保护装置呈长形,且长形的所述桨叶保护装置的长度方向沿所述桨叶的长度方向延伸。
  44. 根据权利要求43所述的无人飞行器,其特征在于,所述桨叶保护装置的大致形状包括以下至少一种:椭圆形、长方形、跑道形、8字形。
  45. 根据权利要求32所述的无人飞行器,其特征在于,所述桨叶的迎风面包括沿所述桨叶的宽度方向分布的上部和下部,沿所述桨叶的迎风方向,所述桨叶保护装置避让所述上部。
  46. 根据权利要求45所述的无人飞行器,其特征在于,所述上部和所述下部分别位于所述桨叶的宽度方向的中线的两侧。
  47. 根据权利要求45所述的无人飞行器,其特征在于,所述桨叶宽度方向的中线位于所述桨叶保护装置所限定的平面内。
  48. 根据权利要求32所述的无人飞行器,其特征在于,所述桨叶保护装置所限定的平面与所述螺旋桨的旋转平面平行,或者,所述桨叶保护装置所限定的平面所述螺旋桨的旋转平面相对倾斜。
  49. 根据权利要求32所述的无人飞行器,其特征在于,一个所述桨叶保护装置包围多个所述桨叶,所述桨叶保护装置形成所述螺旋桨的最外缘。
  50. 根据权利要求49所述的无人飞行器,其特征在于,所述桨叶保护装置的形状与多个所述桨叶所排布的形状相匹配。
  51. 根据权利要求50所述的无人飞行器,其特征在于,各所述桨叶的末端位于所述桨叶保护装置的转角处。
  52. 根据权利要求32所述的无人飞行器,其特征在于,所述桨叶保护装置延伸至所述桨叶末端的一侧为弧形。
  53. 根据权利要求32所述的无人飞行器,其特征在于,所述桨叶保护装置远离所述桨叶的一侧表面为平面或者凸弧面。
  54. 根据权利要求53所述的无人飞行器,其特征在于,所述桨叶保护装置的横截面形状包括以下至少一种:圆形、半圆形、椭圆形、矩形。
  55. 根据权利要求32所述的无人飞行器,其特征在于,还包括辅助支撑件,所述辅助支撑件连接所述桨毂和所述桨叶保护装置。
  56. 根据权利要求55所述的无人飞行器,其特征在于,所述辅助支撑件与所述桨毂可拆卸连接或者一体成型;
    及/或,所述辅助支撑件与所述桨叶保护装置可拆卸连接或者一体成型。
  57. 根据权利要求55所述的无人飞行器,其特征在于,所述辅助支撑件包括多个,多个辅助支撑件以所述螺旋桨的轴线为中心对称设置。
  58. 根据权利要求57所述的无人飞行器,其特征在于,各相邻的两个所述桨叶之间均设置有一个所述辅助支撑件。
  59. 根据权利要求32所述的无人飞行器,其特征在于,各所述桨叶保护装置为对称结构。
  60. 根据权利要求32所述的无人飞行器,其特征在于,多个所述桨叶保护装置以所述桨毂轴线对称设置。
  61. 根据权利要求32所述的无人飞行器,其特征在于,所述桨叶末端包括柔性材料或弹性材料制成。
  62. 根据权利要求32所述的无人飞行器,其特征在于,所述桨叶保护装置包括柔性材料或弹性材料。
PCT/CN2021/103134 2021-06-29 2021-06-29 螺旋桨及无人飞行器 WO2023272489A1 (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1558853A (zh) * 2001-11-07 2004-12-29 螺旋桨、螺旋桨稳定器和有关飞行器的螺旋桨
US20170043869A1 (en) * 2015-08-11 2017-02-16 Intellitrax, Inc. Protection element and device for camera drone
CN206813308U (zh) * 2017-05-19 2017-12-29 深圳市大疆创新科技有限公司 无人飞行器的桨叶保护罩及无人机系统
CN208134605U (zh) * 2018-05-07 2018-11-23 石家庄朗和航空科技有限公司 一种无人机专用螺旋桨
CN213473493U (zh) * 2020-07-04 2021-06-18 张锐 一种外缘环翼叶式螺旋桨

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1558853A (zh) * 2001-11-07 2004-12-29 螺旋桨、螺旋桨稳定器和有关飞行器的螺旋桨
US20170043869A1 (en) * 2015-08-11 2017-02-16 Intellitrax, Inc. Protection element and device for camera drone
CN206813308U (zh) * 2017-05-19 2017-12-29 深圳市大疆创新科技有限公司 无人飞行器的桨叶保护罩及无人机系统
CN208134605U (zh) * 2018-05-07 2018-11-23 石家庄朗和航空科技有限公司 一种无人机专用螺旋桨
CN213473493U (zh) * 2020-07-04 2021-06-18 张锐 一种外缘环翼叶式螺旋桨

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