Blade protection cover and unmanned aerial vehicle

Abstract

The utility model provides a kind of paddle protective cover and unmanned vehicle.The paddle protective cover is applied to panoramic unmanned vehicle with paddle, and the panoramic unmanned vehicle forms panoramic image by splicing multiple imaging devices, and the area that cannot be covered by splicing area constitutes splicing blind area.The paddle protective cover comprises at least one shield unit, which comprises a fixed part connected to the panoramic unmanned vehicle, a first connecting part with one end connected to the fixed part, a second connecting part with one end connected to the other end of the first connecting part, and a cover body connected to the other end of the second connecting part.

Description

Technical Field

[0001] At least one embodiment of this utility model relates to the field of aircraft technology, and more particularly to a propeller protective cover and an unmanned aerial vehicle. Background Technology

[0002] Panoramic unmanned aerial vehicles (UAVs) are intelligent flight devices that integrate UAV technology with panoramic imaging systems, enabling 360-degree aerial observation and data collection without blind spots.

[0003] As a safety component of aircraft, propeller guards are typically mounted on the fuselage arm and cover the rotation range of the propeller blades. However, this mounting location and structural design make it easy for the propeller guards to enter the imaging range of the imaging device, obstructing part of the field of view and affecting the integrity and quality of the panoramic image. Utility Model Content

[0004] To address at least one of the aforementioned and other technical problems in the prior art, this utility model provides a blade protective cover to prevent obstruction of the imaging device's line of sight.

[0005] In a first aspect, this utility model provides a propeller protective cover for use on a panoramic unmanned aerial vehicle (UAV) with propellers. The panoramic UAV forms a panoramic image by stitching together multiple imaging devices, and the area not covered by the stitching area constitutes a stitching blind zone. The propeller protective cover includes: at least one protective cover unit, the protective cover unit including: a fixing part connected to the panoramic UAV; a first connecting part, one end of which is connected to the fixing part; a second connecting part, one end of which is connected to the other end of the first connecting part; and a cover body connected to the other end of the second connecting part; wherein at least a portion of the second connecting part forms a first angle with the first connecting part, such that the propeller protective cover is located within the stitching blind zone of the panoramic UAV.

[0006] A second aspect of this utility model provides an unmanned aerial vehicle, comprising: a fuselage; multiple arms; a first fisheye lens having a first splicing area; a second fisheye lens having a second splicing area, wherein an area not covered by either the second splicing area or the first splicing area constitutes a splicing blind zone; and any of the aforementioned propeller protective covers.

[0007] A third aspect of this utility model provides an unmanned aerial vehicle (UAV), comprising: a fuselage; multiple arms, each arm having a propeller at its end away from the fuselage; multiple fisheye lenses, which are stitched together to form a panoramic image, the area outside the panoramic image constituting a stitching blind zone; and a propeller guard, the propeller guard comprising: at least one guard unit, the guard unit comprising: a fixing part connected to the arm or the fuselage; a cover body disposed on the outside of a portion of the propeller blades; and a connecting part, the two ends of the connecting part being connected to the cover body and the fixing part respectively; wherein the propeller guard is located within the stitching blind zone of the UAV.

[0008] According to the embodiment of the present utility model, the propeller protective cover forms a first angle with the first connecting part through at least a portion of the second connecting part, so that the propeller protective cover can avoid the stitching area of ​​each imaging device and place the propeller protective cover in the stitching blind zone of the panoramic unmanned aerial vehicle, so that the propeller protective cover will not obstruct the line of sight of the imaging device and ensure the integrity and quality of the panoramic image finally generated by multiple imaging devices. Attached Figure Description

[0009] The above and other objects, features and advantages of the present invention will become clearer from the following description of embodiments of the present invention with reference to the accompanying drawings, in which:

[0010] Figure 1 A perspective view of a panoramic unmanned aerial vehicle according to an embodiment of the present invention is shown schematically;

[0011] Figure 2 Schematic illustration Figure 1 The image shows a side view of the panoramic unmanned aerial vehicle.

[0012] Figure 3 Schematic illustration Figure 1 The field of view and stitching area of ​​the imaging device of the panoramic unmanned aerial vehicle shown;

[0013] Figure 4 The illustration schematically shows a first-view perspective view of a blade protector according to an embodiment of the present invention;

[0014] Figure 5 Schematic illustration Figure 4 A second-view perspective perspective of the blade protection cover shown;

[0015] Figure 6 Schematic illustration Figure 4 The side view of the blade protection cover shown;

[0016] Figure 7 A schematic side view of a blade protector according to another embodiment of the present invention is shown;

[0017] Figure 8 Schematic illustration Figure 4 A top view of the blade protection cover shown;

[0018] Figure 9 A schematic top view of a blade protector according to yet another embodiment of the present invention is shown;

[0019] Figure 10 Schematic illustration Figure 4 The blade protection cover shown is a bottom view;

[0020] Figure 11 A schematic top view of a blade protector according to another embodiment of the present invention is shown;

[0021] Figure 12 Schematic illustration of, for example Figure 11 A partial side view of the blade protection cover shown;

[0022] Figure 13 A partial perspective view of the insertion portion and mating portion according to an embodiment of the present invention is shown schematically.

[0023] In the accompanying drawings, the meanings of the reference numerals are as follows:

[0024] 1. Panoramic unmanned aerial vehicle; 11. Fuselage; 12. Arm; 13. Propeller; 14. Imaging device; 15. Blind spot; 16. Stitching blind spot; 17. Rotation surface;

[0025] 2. Blade protection cover; 21. Cover unit; 211. Fixing part; 2111. Fixing element; 2112. Moving part; 212. First connecting part; 2121. First section; 2122. Second section; 2123. Protrusion; 213. Second connecting part; 2131. Extension section; 2132. Bending section; 2133. Groove; 214. Cover body; 215. Insertion part; 2151. Shoulder; 216. Fitting part; 2161. Rib. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0027] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0028] All terms used herein, including technical and scientific terms, have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0029] When using expressions such as "at least one of A, B, and C," the meaning should generally be interpreted in accordance with the understanding of a person skilled in the art. For example, "a system having at least one of A, B, and C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C. Similarly, when using expressions such as "at least one of A, B, or C," the meaning should generally be interpreted in accordance with the understanding of a person skilled in the art. For example, "a system having at least one of A, B, or C" should include, but is not limited to, systems having A alone, having B alone, having C alone, having A and B, having A and C, having B and C, and / or having A, B, and C.

[0030] It should also be noted that the directional terms mentioned in the embodiments, such as "up," "down," "front," "back," "left," and "right," are only for reference to the directions in the accompanying drawings and are not intended to limit the scope of protection of this utility model. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or constructions will be omitted where they may cause confusion in understanding this utility model.

[0031] Figure 1 A perspective view of a panoramic unmanned aerial vehicle according to an embodiment of the present invention is shown schematically. Figure 2 Schematic illustration Figure 1 The image shown is a side view of a panoramic unmanned aerial vehicle. Figure 3 Schematic illustration Figure 1 The image device of the panoramic unmanned aerial vehicle shown has a field of view and a stitching area.

[0032] like Figure 1 and Figure 2 As shown, the panoramic unmanned aerial vehicle 1 achieves 360° all-around field of view coverage through the collaborative operation of multiple imaging devices 14 (e.g., wide-angle lenses or fisheye lenses) distributed around the fuselage 11. Each imaging device 14 has an independent field of view (FOV) and a stitching area that does not exceed the range of the field of view. The field of view of each imaging device 14 overlaps with the field of view of adjacent imaging devices 14 to a certain extent. These overlapping areas not only expand the overall field of view but also provide feature matching and alignment basis for subsequent image stitching.

[0033] like Figure 3As shown, the area that cannot be covered by multiple field of view regions constitutes the field of view blind zone 15, and the area that cannot be covered by multiple stitching regions constitutes the stitching blind zone 16.

[0034] During actual imaging, due to the physical obstruction of the imaging device 14's installation position, the aircraft structure (such as the arm 12 and fuselage 11), and additional components (such as propeller guards), scene information may not be effectively captured by any imaging device 14 in certain directions or at certain distances, thus creating blind spots 15. For example, the propeller 13 and its protective cover need to be installed on the arm 12, which extends outward from the fuselage 11 and is located in the shooting path of the imaging device 14. To protect the entire rotation range of the propeller 13, the propeller guard extends further outward relative to the arm 12, which places the propeller guard within the field of view of the imaging device 14, resulting in image loss in local areas.

[0035] In view of this, how to ensure that the blade protection cover can protect the blade 13 while preventing the blade protection cover from entering the stitching area of ​​multiple imaging devices 14 has become an urgent technical problem to be solved.

[0036] The blade protection cover and unmanned aerial vehicle provided by this utility model will be described in detail below with reference to the accompanying drawings. Unless otherwise specified, the features of the following embodiments and implementation methods can be combined with each other.

[0037] Figure 4 The diagram schematically illustrates a first-view perspective view of a blade protector according to an embodiment of the present invention. Figure 5 Schematic illustration Figure 4 The image shown is a second-view perspective perspective of the propeller guard.

[0038] In a first aspect, this utility model provides a blade protection cover 2, which is applied to a panoramic unmanned aerial vehicle 1 with blades 13, such as... Figures 1 to 3 As shown, the panoramic unmanned aerial vehicle 1 forms a panoramic image by stitching together multiple imaging devices 14. Areas not covered by the stitched area constitute stitching blind spots 16. Figure 4 and Figure 5 As shown, the propeller guard 2 includes at least one guard unit 21. The guard unit 21 includes a fixing part 211, a first connecting part 212, a second connecting part 213, and a guard body 214. The fixing part 211 is connected to the panoramic unmanned aerial vehicle 1. One end of the first connecting part 212 is connected to the fixing part 211, one end of the second connecting part 213 is connected to the other end of the first connecting part 212, and the guard body 214 is connected to the other end of the second connecting part 213. At least a portion of the second connecting part 213 forms a first angle α with the first connecting part 212, such that the propeller guard 2 is located within the stitching blind zone 16 of the panoramic unmanned aerial vehicle 1.

[0039] According to the embodiment of the present invention, the propeller protective cover 2 forms a first angle with the first connecting part 212 through at least a portion of the second connecting part 213, that is, the second connecting part 213 is tilted relative to the first connecting part 212, so that the propeller protective cover 2 can avoid the stitching area of ​​each imaging device 14 and place the propeller protective cover 2 within the stitching blind zone 16 of the panoramic UAV 1. In this way, it can be ensured that the propeller protective cover 2 will not obstruct the line of sight of the imaging device 14, so that the propeller protective cover 2 will not appear in the final panoramic image. It can provide effective physical protection for the propeller 13, prevent external collisions from damaging the propeller 13, and ensure the integrity and quality of the panoramic image finally generated by multiple imaging devices 14.

[0040] According to embodiments of the present invention, such as Figure 1 and Figure 2 As shown, the panoramic unmanned aerial vehicle 1 includes a fuselage 11, arms 12, propellers 13, and multiple imaging devices 14. Multiple arms 12 extend outward from the fuselage 11, and propellers 13 are located at the ends of the arms 12 opposite to the fuselage 11. Multiple imaging devices 14 are located on the fuselage 11 and each has a field of view and a stitching area.

[0041] As an example, such as Figure 1 As shown, the panoramic unmanned aerial vehicle 1 includes a fuselage 11, four arms 12, and two imaging devices 14 (i.e., a first fisheye lens and a second fisheye lens). The first fisheye lens is located on the top shell of the fuselage 11, and the second fisheye lens is located on the bottom shell of the fuselage 11. Figure 2 As shown, the first fisheye lens has a first field of view A and a first stitching area angle P1, wherein both the first field of view A1 and the first stitching area angle P1 are greater than 180 degrees, and the first stitching area angle P1 is not greater than the first field of view A (for example, the first field of view A can be 210°, and the first stitching area angle P1 can be 190°). The first fisheye lens has a first field of view region defined by the top shell and a first stitching area not exceeding the range of the first field of view region. Similarly, the second fisheye lens has a second field of view B and a second stitching area angle P2, and has a second field of view region defined by the bottom shell and a second stitching area not exceeding the range of the second field of view region.

[0042] The first field of view includes the area above line L. It should be understood that the first field of view is a partially spherical area located on the side of the first fisheye lens away from the base shell. The first splicing area is also a partially spherical area located on the side of the first fisheye lens away from the base shell, and is entirely within the first field of view. Similarly, the second field of view includes the area below line M.

[0043] like Figure 3As shown, since both the first field of view A and the second field of view B are greater than 180°, the first field of view region can intersect with the second field of view region to form an overlapping area and a blind spot 15. The overlapping area refers to the area that can be covered by both the second and first field of view regions, while the blind spot 15 refers to the area that cannot be covered by either the second or first field of view region. Similarly, since both the first stitching area angle P1 and the second stitching area angle P2 are greater than 180°, the first and second stitching areas intersect to form a stitching angle region, and the area that cannot be covered by either the first or second stitching area constitutes a stitching blind spot 16. The propeller protective covers 2 are all located within the stitching blind spot 16.

[0044] In such an embodiment, the blade protection shield 2 may include four shield units 21, each of which provides protection for one of the four blades 13. It should be understood that the embodiments of this invention are not limited thereto. For example, the panoramic unmanned aerial vehicle 1 may also include six or eight blades 13, and the blade protection shield 2 may also include six or eight shield units 21.

[0045] In some alternative embodiments, the blade guard 2 may include one or two guard units 21.

[0046] In some alternative embodiments, the panoramic unmanned aerial vehicle 1 may also include three or four imaging devices 14. It should be understood that the embodiments of the present invention are not limited thereto.

[0047] As an example, the fixing part 211 is detachably connected to the arm 12. Figure 4 and Figure 5 As shown, the fixing part 211 includes a fixing member 2111 and a movable member 2112. The fixing member 2111 is connected to the first connecting part 212, and the movable member 2112 is closably connected to the fixing member 2111. In the closed state, the movable member 2112 is engaged with the fixing member 2111 and sleeved on the arm 12.

[0048] A motor mount is provided at the end of the arm 12 facing away from the base, for mounting the motor. The blade 13 is connected to the motor to rotate under the drive of the motor.

[0049] The fixing member 2111 includes an annular member and an extension member. The annular member is fitted under the motor base, and the extension member extends from the annular member along the machine arm 12. The movable member 2112 is disposed on the extension member. The movable member 2112 and the extension member can be fitted onto the machine arm 12 by means of snap-fit ​​connection, interference fit, or other methods.

[0050] As an example, the fixing part 211, the first connecting part 212, the second connecting part 213 and the cover 214 can be integrally formed or connected by means of bonding or other methods.

[0051] According to embodiments of the present invention, such as Figure 4 As shown, with the rotation axis S of the blade 13 as the projection direction and the surface orthogonal to the projection direction as the projection surface, the projection of the first connecting part 212 coincides with the projection of the rotation surface 17 of the blade 13, and the projection of the second connecting part 213 at least partially coincides with the projection of the rotation surface 17.

[0052] The rotating surface 17 is the plane swept by the blade 13 during rotation. The projection of the second connecting part 213 at least partially coincides with the projection of the rotating surface 17. At least a portion of the second connecting part 213 forms a first angle with the first connecting part 212, so that the second connecting part 213 can utilize the unused space below the blade 13 without interfering with the normal rotation of the blade 13, so that the blade protective cover 2 is entirely within the splicing blind zone 16, thus avoiding the blade protective cover 2 from obstructing the line of sight of the imaging device 14.

[0053] It should be noted that the up-down relationship is defined based on the direction of gravity of the panoramic unmanned aerial vehicle 1 in normal flight. "Up" refers to the direction away from the ground, which can be understood as the space above the plane of rotation, and "down" refers to the direction closer to the ground, which can be understood as the space below the plane of rotation.

[0054] Figure 6 Schematic illustration Figure 4 The side view of the blade protection cover shown.

[0055] According to embodiments of the present invention, such as Figures 4 to 6 As shown, the fixing part 211 is connected to the arm 12 of the panoramic unmanned aerial vehicle 1, the first connecting part 212 is located below the propeller 13, and the second connecting part 213 extends upward from the first connecting part 212 at an angle, covering the outer periphery of the propeller 13 with the cover 214.

[0056] As an example, the cover 214 may be located above or flush with the rotating surface 17 of the blade 13.

[0057] The second connecting portion 213 extends upward at an angle relative to the first connecting portion 212. Specifically, the second connecting portion 213 extends from below the rotating surface 17 to be flush with or protruding from the rotating surface 17. This allows the cover 214, the first connecting portion 212, and the second connecting portion 213 to enclose a space, thus protecting the propeller blade 13 from collisions and interference from external objects. It also prevents accidental contact with the high-speed rotating propeller blade 13, improving safety. The second connecting portion 213 extends upward at an angle from the first connecting portion 212, forming a first angle between them. This places the propeller blade protective cover 2 in the stitching blind zone 16, preventing obstruction of the imaging device 14's field of view and ensuring the normal operation of aerial photography or monitoring functions.

[0058] According to embodiments of the present invention, such as Figures 4 to 6 As shown, the second connecting portion 213 includes an extension section 2131 and a bent section 2132. The extension section 2131 extends from the first connecting portion 212 and forms a first angle with the first connecting portion 212. The bent section 2132 extends from the end of the extension section 2131 away from the first connecting portion 212 to the cover 214. The bent section 2132 and the extension section 2131 form a third angle γ, which may be smaller than the first angle.

[0059] The extension segment 2131 is a rod-shaped or column-shaped structure, and the bending segment 2132 is a rod-shaped, column-shaped, or arc-shaped structure. The bending segment 2132 extends upward from the end of the extension segment 2131 that is away from the first connecting part 212 (e.g., Figure 6 (From the perspective shown), the cover 214 is supported on the periphery of the blade 13.

[0060] The extension section 2131 and the bending section 2132 can be integrally formed or connected by means of bonding or other methods.

[0061] With the rotation axis S of the blade 13 as the projection direction and the surface orthogonal to the projection direction as the projection plane, the projection of the extension 2131 at least partially coincides with the projection of the rotation surface 17. For example, the projection of the extension 2131 may partially coincide with the projection of the rotation surface 17, or the projection of the extension 2131 may completely coincide with the projection of the rotation surface 17.

[0062] Figure 7 A schematic side view of a blade protector according to another embodiment of the present invention is shown.

[0063] In some alternative embodiments, such as Figure 7 As shown, the second connecting part 213 can be a rod-shaped or column-shaped structure, and the second connecting part 213 can extend obliquely upward from the first connecting part 212 to the cover 214.

[0064] In such an embodiment, the projection direction is taken as the rotation axis S of the blade 13, and the projection surface is taken as the surface orthogonal to the projection direction. The projection portion of the extension 2131 coincides with the projection of the rotation surface 17.

[0065] Figure 8 Schematic illustration Figure 4 The top view of the blade protection cover shown.

[0066] According to embodiments of the present invention, such as Figures 4 to 6 , Figure 8As shown, the first connecting portion 212 includes at least two first segments 2121 and second segments 2122. One end of each first segment 2121 is connected to the fixing portion 211, and the second segment 2122 is connected to the other end of the at least two first segments 2121. At least two second connecting portions 213 are connected between the second segments 2122 and the cover 214.

[0067] As an example, the quantity of the first segment 2121 can include any value among 2, 3, 4, and 5, etc. It should be understood that the embodiments of this utility model are not limited thereto.

[0068] The first segment, 2121, is a rod-shaped or column-shaped structure. The second segment, 2122, is a rod-shaped or column-shaped structure.

[0069] In this embodiment, the distribution of multiple connection points disperses the force on the blade shield 2, improving its impact resistance and maintaining its overall balance. During flight of the panoramic unmanned aerial vehicle 1, this reduces vibration or deformation of the blade shield 2, enhancing its safety and lifespan.

[0070] According to embodiments of the present invention, such as Figure 8 As shown, at least two first segments 2121 are rod-shaped or column-shaped structures, and the second segment 2122 is an arc-shaped or broken-line structure, forming a fan-shaped structure.

[0071] The first segment 2121 extends from the annular component along a plane approximately parallel to the mounting surface of the motor mount. The second segment 2122 connects to the end of the first segment 2121 facing away from the annular component, and multiple first segments 2121 and second segments 2122 are approximately coplanar. "Approximately parallel" refers to the spatial or planar arrangement of the extension direction of the first segment 2121 and the plane containing the mounting surface, appearing visually basically parallel, without requiring strict geometric parallelism, and allowing for a certain angular deviation. "Approximately coplanar" means that multiple first segments 2121 and second segments 2122 appear approximately coplanar visually, without requiring strict geometric coplanarity, and allowing for a certain angular or distance deviation.

[0072] In such an embodiment, the fan-shaped structure formed by at least two first segments 2121 and second segments 2122 has a fan-shaped plane that is approximately orthogonal to the rotation axis of the blade 13. The first included angle may be the angle between at least a portion of each second connection 213 (e.g., extension 2131) and the fan-shaped plane.

[0073] As an example, the included angle between two adjacent first segments 2121 can be approximately equal. This allows the force to be evenly distributed at each connection point, improving the overall balance and stability of the structure. Simultaneously, the uniform arrangement of the first segments 2121 makes the blade protection cover 2 appear more regular and aesthetically pleasing.

[0074] The first segment 2121, which is rod-shaped or column-shaped, provides a stable supporting foundation, while the second segment 2122, which is arc-shaped or zigzag-shaped, enhances the flexibility and adaptability of the structure, allowing the first connection 212 to better cope with forces from different directions. The fan-shaped layout not only optimizes space utilization but also allows the blade protector 2 to more comprehensively cover the blade 13 area, providing all-around protection, and also makes the overall appearance of the blade protector 2 more harmonious and streamlined.

[0075] According to an embodiment of the present invention, the first included angle α is configured to be greater than or equal to 160 degrees and less than 180 degrees. That is, 160°≤α<180°.

[0076] For example, the first included angle α can be configured as any value among 160°, 162°, 164°, 166°, 168°, 170°, 172°, 174°, 176°, 178°, etc. It should be understood that the embodiments of this utility model are not limited thereto.

[0077] According to embodiments of the present invention, such as Figure 4 and Figure 8 As shown, the shield unit 21 includes at least two second connecting portions 213. With the rotation axis of the blade 13 as the projection direction and a plane orthogonal to the projection direction as the projection plane, a second included angle β is formed between two distant second connecting portions 213. This second included angle β is configured to be greater than or equal to 100 degrees and less than or equal to 150 degrees. That is, 100° ≤ β < 150°.

[0078] For example, the second included angle β can be configured as any value among 100°, 105°, 110°, 115°, 120°, 125°, 130°, 135°, 140°, 145°, and 150°. It should be understood that the embodiments of this utility model are not limited thereto.

[0079] According to embodiments of the present invention, such as Figure 4 and Figure 8 As shown, the protective cover unit 21 includes at least three second connecting parts 213, which are spaced apart between the second segment 2122 and the cover body 214.

[0080] For example, the number of second connecting parts 213 may include 3, 4 or 5; it should be understood that the embodiments of this utility model are not limited thereto.

[0081] Figure 9 A schematic top view of a blade protector according to yet another embodiment of the present invention is shown.

[0082] According to embodiments of the present invention, such as Figure 9 As shown, the protective cover unit 21 includes at least two first connecting parts 212 and at least two second connecting parts 213. Each first connecting part 212 and each second connecting part 213 is a rod-shaped structure or a column-shaped structure. The at least two second connecting parts 213 extend from the at least two first connecting parts 212 to the cover body 214.

[0083] In this embodiment, both the first connecting part 212 and the second connecting part 213 are rod-shaped or column-shaped structures, and the first connecting part 212 and the second connecting part 213 are connected one-to-one. The cover 214 is fixed through multiple connection points, enhancing the rigidity and deformation resistance of the overall structure. The rod-shaped design ensures sufficient strength while reducing the overall weight, contributing to the lightweighting of the equipment. The reasonable distribution of multiple connecting parts makes the stress distribution more uniform, effectively avoiding local stress concentration and improving the stability and durability of the protective cover 2 under external impact.

[0084] As an example, the shield unit 21 may include any number of first connecting parts 212 and second connecting parts 213, such as 2, 3, 4, 5 and 6.

[0085] According to embodiments of the present invention, such as Figure 4 , Figure 5 and Figure 8 As shown, the first connecting portion 212 and the second connecting portion 213 have a first surface facing the rotating surface 17, and at least a portion of the first surface is provided with a protrusion 2123. The cross-section of the protrusion 2123 includes at least one of the following shapes: triangle, cone, trapezoid, teardrop.

[0086] As an example, protrusions 2123 may be provided on the first surfaces of both the first connecting portion 212 and the second connecting portion 213. Alternatively, protrusions 2123 may be provided on the first surfaces of the first connecting portion 212 and the second connecting portion 213 located below the rotating surface 17.

[0087] For example, the first surface of the first segment 2121, the second segment 2122, and the extension segment 2131 are all provided with a protrusion 2123. Alternatively, the first surface of the second segment 2122 is provided with a protrusion 2123.

[0088] As an example, the protrusion 2123 may be integrally formed with the first connecting portion 212 and / or the second connecting portion 213, or may be provided on the first surface by means of adhesion.

[0089] When the blade 13 rotates, air flowing through the surface of the blade shield 2 facing the blade 13 (i.e., the first surface) forms a boundary layer. Within this boundary layer, the airflow velocity gradient is large, easily generating turbulence and eddies. The cross-section of the protrusion 2123 is constructed as a tapering structure from bottom to top, allowing the descending airflow to actively disrupt the continuity of the boundary layer during blade 13 rotation. Through the geometry of the protrusion 2123, large-scale eddies are decomposed into smaller-scale eddies. These smaller-scale eddies have lower energy and dissipate faster, reducing energy loss from turbulence and improving the aerodynamic efficiency of the blade 13.

[0090] When the airflow encounters the protrusion 2123, it flows along the surface contour of the protrusion 2123 and is guided in a specific direction. The streamlined shape of the protrusion 2123 allows the airflow to transition smoothly, avoiding abrupt changes in airflow direction and reducing airflow separation. By preventing airflow separation, the protrusion 2123 reduces the form drag and frictional resistance during the operation of the blade 13, enabling the blade 13 to generate lift more efficiently.

[0091] Turbulence and eddies cause pressure pulsations, which propagate as sound waves and thus create noise. The protrusion 2123 breaks down large eddies into smaller ones, making the amplitude and frequency distribution of pressure pulsations more uniform and reducing the intensity and sharpness of the noise. Simultaneously, the orderly airflow reduces the impact between the airflow and the surface of the blades 13, lowering impact noise and making the operation of the panoramic unmanned aerial vehicle 1 quieter.

[0092] According to fluid mechanics principles, drag is proportional to the square of velocity; even a small reduction in drag can lead to a significant improvement in energy consumption. The protrusion 2123 optimizes the airflow distribution around the blade 13, reducing energy dissipation in turbulence and eddies, converting more energy into effective lift and thrust, improving energy utilization efficiency, and indirectly extending the equipment's endurance.

[0093] Figure 10 Schematic illustration Figure 4 The image shows a bottom view of the blade protection cover.

[0094] According to embodiments of the present invention, such as Figure 6 and Figure 10 As shown, the first connecting portion 212 and the second connecting portion 213 have a second surface facing away from the blade 13, and at least a portion of the second surface is provided with a groove 2133.

[0095] As an example, a continuous groove 2133 can be formed by recessing inward from the second surfaces of the first connecting portion 212 and the second connecting portion 213. Alternatively, spaced grooves 2133 can be formed by recessing inward at intervals from the second surfaces of the first connecting portion 212 and / or the second connecting portion 213.

[0096] As an example, the first connecting portion and / or the second connecting portion may also form multiple through holes that penetrate two opposing surfaces. For example, the through holes may penetrate the second surface and the surface of the protrusion.

[0097] According to embodiments of the present invention, such as Figure 6 and Figure 10 As shown, the cover 214 has an arc-shaped structure and a third surface facing downwards, on which at least a groove 2133 is provided. It should be understood that the embodiments of the present invention are not limited thereto; for example, the groove 2133 may also be formed on other surfaces of the cover 214, such as on the surface of the cover 214 adjacent to the third surface.

[0098] As an example, such as Figure 10 As shown, the bent section 2132 is connected to the third surface of the cover 214.

[0099] As an example, the cover 214 can form a channel that runs through two opposing surfaces to reduce the weight of the cover.

[0100] In such an embodiment, by providing grooves 2133 on the second and / or third surfaces, the weight of the blade protector 2 can be reduced while maintaining the necessary strength and stability of the blade protector 2.

[0101] Figure 11 A schematic top view of a blade protector according to another embodiment of the present invention is shown. Figure 12 Schematic illustration of, for example Figure 11 A partial side view of the blade protection cover shown.

[0102] According to embodiments of the present invention, such as Figure 11 and Figure 12 As shown, the blade protection cover 2 includes at least two cover units 21. One of the two cover units 21 has a plug-in portion 215, and the other has a mating portion 216. When the plug-in portion 215 and the mating portion 216 are connected, the two cover units 21 are in a connected state. The end of the mating portion 216 facing the plug-in portion 215 is recessed inward to form a receiving groove. The plug-in portion 215 extends into the receiving groove and engages with the receiving groove to connect the plug-in portion 215 and the mating portion 216.

[0103] The separate design of at least two protective cover units 21 allows users to store or combine the units independently according to their actual needs. Each protective cover unit 21 is relatively small in size and can be flexibly placed in limited spaces, reducing the overall footprint. When transportation or storage is required, these separate protective cover units 21 can be nested or arranged compactly to improve space utilization. In addition, the design of the independent protective cover units 21 also makes it convenient for users to choose to carry some or all of the protective cover units 21 according to the usage scenario, enhancing the portability and practicality of the propeller protective cover 2.

[0104] When the insertion part 215 is connected to the mating part 216, two adjacent shield units 21 can form a stable connection. The end of the mating part 216 facing the insertion part 215 is recessed inward to form a receiving groove. The insertion part 215 extends into the receiving groove and engages with it, improving the accuracy and stability of the connection between the two shield units 21 and enhancing the overall structural strength, making the blade protection cover 2 less prone to loosening or separation during operation. Furthermore, the interlocking connection simplifies the installation and disassembly process, facilitates maintenance and replacement, and ensures the sealing of the connection, effectively preventing the entry of external impurities.

[0105] According to an embodiment of the present invention, the plug-in portion 215 is configured as a cylindrical structure with a polygonal cross-section. For example, the cross-sectional shape of the plug-in portion 215 may include any shape among trapezoids, pentagons, hexagons, etc. It should be understood that the embodiments of the present invention are not limited thereto; for example, the cross-sectional shape of the plug-in portion 215 may also be irregular, such as D-shaped, elliptical, etc.

[0106] The plug-in portion 215 has a polygonal cross-section, which prevents relative rotation between the plug-in portion 215 and the receiving groove within the receiving groove, thus improving the stability and reliability of the connection. Furthermore, the polygonal cross-section allows for a positioning fit between the plug-in portion 215 and the receiving groove, ensuring alignment accuracy between the protective cover units 2 and preventing misalignment caused by rotation.

[0107] As an example, at least one side of a polygon may have a length unequal to the others. This creates an asymmetrical structure, ensuring that the connector 215 can only mate with the receiving groove in a specific orientation, preventing directional misalignment during installation. When a user attempts to insert it in the wrong orientation, the unequal sides create a noticeable obstacle, prompting the user to adjust the orientation. This avoids loose connections or functional failures due to incorrect installation, improving assembly accuracy and enhancing the error-proofing performance of the blade protection cover 2.

[0108] Figure 13 A partial perspective view of the insertion portion 215 and the mating portion according to an embodiment of the present invention is shown schematically.

[0109] According to embodiments of the present invention, such as Figure 13 As shown, the mating part 216 includes a plurality of protruding ribs 2161. The plurality of protruding ribs 2161 protrude from the inner sidewall of the receiving groove at intervals so as to abut against the sidewall of the insertion part 215 in the connected state and to have an interference fit with the insertion part 215.

[0110] In such an embodiment, multiple protruding ribs 2161 form an interference fit with the insertion part 215, generating a large frictional force through physical interference, making the connection between the insertion part 215 and the mating part 216 more secure and less prone to loosening or falling off.

[0111] According to embodiments of the present invention, such as Figure 13 As shown, the protective cover unit 21 also includes a shoulder 2151. The shoulder 2151 protrudes circumferentially from the insertion portion 215 so that it abuts against the open end of the mating portion 216 in the connected state, preventing the insertion portion 215 from moving further along the insertion direction of the mating portion 216.

[0112] The contact between the shoulder 2151 and the open end of the mating part 216 forms a physical limit, preventing the insertion part 215 from being over-inserted. This avoids damage to internal parts or improper assembly due to excessive insertion, improving the reliability of the assembly process. The limiting effect of the shoulder 2151 ensures that the insertion part 215 and the mating part 216 are always kept in the optimal working position, maintaining a stable connection even under vibration or impact conditions, reducing fluctuations caused by displacement. Assembly personnel can perceive the contact between the shoulder 2151 and the open end through touch or sight, clearly knowing that the insertion part 215 has reached the correct position without additional measurement or adjustment, improving assembly efficiency and reducing operational difficulty.

[0113] In some alternative embodiments, the insertion part 215 and the mating part 216 can also be connected by snap-fit ​​connection, screw connection or other means.

[0114] As an example, such as Figure 1 , Figure 11 and Figure 12 As shown, the panoramic unmanned aerial vehicle 1 may include four arms 12. One pair of arms is located on one side of the plane formed by the roll axis and yaw axis, and the other pair of arms is located on the other side of the plane formed by the roll axis and yaw axis. Each arm 12 is equipped with a set of propeller blades 13, and the propeller blade protective cover 2 includes four protective cover units 21. Each protective cover unit 21 is mounted to the arm via a fixing part 211.

[0115] Two shield units 21 located on the same side of the plane formed by the roll axis and the yaw axis are detachably connected. One of the two shield units 21 has a plug-in part 215 and the other has a mating part 216.

[0116] The two shield units 21 located on one side of the plane formed by the roll axis and the yaw axis, and the two shield units 21 located on the other side of the plane formed by the roll axis and the yaw axis, can be arranged symmetrically about the plane formed by the roll axis and the yaw axis.

[0117] like Figure 12 As shown, with the rotation axis of the blade 13 as the projection direction and a plane orthogonal to the projection direction as the projection plane, the angle between the straight line D containing the projections of the rotation axes of the two blades 13 located on the same side of the plane formed by the roll axis and the yaw axis, and the projection of the second connecting part near the straight line D, is defined. It can be configured to be greater than or equal to 70° and less than or equal to 90°, i.e., 70° ≤ ≤90°. For example, included angle. It can be configured to any value among 70°, 72°, 74°, 76°, 78°, 80°, 82°, 84°, 86°, 88° and 90°.

[0118] A second aspect of this utility model provides an unmanned aerial vehicle (UAV) comprising a fuselage 11, multiple arms 12, a first fisheye lens, a second fisheye lens, and any one of the aforementioned propeller protective covers 2. The first fisheye lens has a first splicing area, and the second fisheye lens has a second splicing area. Areas not covered by either the second splicing area or the first splicing area constitute a splicing blind zone 16.

[0119] By placing the propeller guard 2 within the stitching blind zone 16 of the first and second fisheye lenses, interference from the propeller guard 2 with the panoramic image is avoided, ensuring the integrity and clarity of the vision system.

[0120] The unmanned aerial vehicle can be a panoramic unmanned aerial vehicle 1.

[0121] Other features of this implementation have become apparent in the above embodiments and will not be repeated here.

[0122] A third aspect of this utility model provides an unmanned aerial vehicle (UAV) comprising a fuselage 11, multiple arms 12, multiple fisheye lenses, and propeller guards 2. Each arm 12 has a propeller 13 at its end furthest from the fuselage 11. The multiple fisheye lenses stitch together images to form a panoramic image, with the area outside the panoramic image constituting a stitching blind zone 16. The propeller guard 2 includes at least one guard unit 21, which includes a fixing part 211, a guard body 214, and a connecting part. The fixing part 211 is connected to either the arm 12 or the fuselage 11. The guard body 214 is disposed on the outer side of a portion of the propeller 13, and the two ends of the connecting part are connected to the guard body 214 and the fixing part 211, respectively. The propeller guard 2 is located within the stitching blind zone 16 of the UAV.

[0123] The propeller guard 2 is located within the blind spot 16 of the UAV. The propeller guard 2 can prevent the propeller blades 13 from colliding with external objects, while not interfering with the UAV's environmental perception capabilities. By organically integrating the propeller guard 2 with the vision system, efficient use of space is achieved.

[0124] Other features of this implementation have become apparent in the above embodiments and will not be repeated here.

[0125] The embodiments of the present invention have been described above. However, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. The scope of the present invention is defined by the appended claims and their equivalents. Various substitutions and modifications can be made by those skilled in the art without departing from the scope of the present invention, and all such substitutions and modifications should fall within the scope of the present invention.

Claims

1. A propeller protective cover, applied to a panoramic unmanned aerial vehicle (UAV) with propellers, wherein the panoramic UAV forms a panoramic image by stitching together multiple imaging devices, and areas not covered by the stitching area constitute stitching blind spots, characterized in that... The blade protection cover includes: At least one protective shield unit, the protective shield unit comprising: The fixed part is connected to the panoramic unmanned aerial vehicle; The first connecting part is connected at one end to the fixing part; The second connecting part has one end connected to the other end of the first connecting part; The cover is connected to the other end of the second connecting part; wherein at least a portion of the second connecting part forms a first angle with the first connecting part, so that the propeller protective cover is located within the splicing blind zone of the panoramic unmanned aerial vehicle.

2. The blade protective cover according to claim 1, characterized in that, The first included angle is configured to be greater than or equal to 160 degrees and less than 180 degrees; And / or, the shield unit includes at least two of the second connecting portions; With the rotation axis of the blade as the projection direction and the plane orthogonal to the projection direction as the projection plane, a second included angle is formed between two distant second connecting parts. The second included angle is configured to be greater than or equal to 100 degrees and less than or equal to 150 degrees.

3. The blade protective cover according to claim 1, characterized in that, The fixed part is connected to the arm of the panoramic unmanned aerial vehicle. The first connecting part is located below the propeller blade, and the second connecting part extends upward from the first connecting part at an angle, covering the outer periphery of the propeller blade with the cover.

4. The blade protective cover according to claim 1, characterized in that, The second connecting part includes: An extension segment extends from the first connecting portion and forms the first included angle with the first connecting portion; A bent section extends from one end of the extension section away from the first connecting portion to the cover; The bent section and the extended section form a third angle, which is smaller than the first angle.

5. The blade protective cover according to claim 4, characterized in that, The first connecting part includes: At least two first segments, one end of each first segment being connected to the fixing part; The second segment connects to the other end of at least two of the first segments; At least two of the second connecting parts are connected between the second segment and the cover.

6. The blade protective cover according to claim 5, characterized in that, At least two of the first segments are rod-shaped structures, and the second segment is an arc-shaped or broken-line structure, and at least two of the first segments and the second segment form a fan-shaped structure.

7. The blade protective cover according to claim 6, characterized in that, It includes at least three second connecting parts, which are spaced apart between the second segment and the cover.

8. The blade protective cover according to claim 1, characterized in that, The protective cover unit includes at least two first connecting parts and at least two second connecting parts, each of the first connecting parts and each of the second connecting parts is a rod-shaped structure, and at least two of the second connecting parts extend from the at least two first connecting parts to the cover body.

9. The blade protective cover according to claim 1, characterized in that, With the axis of rotation of the blade as the projection direction and a surface orthogonal to the projection direction as the projection surface, the projection of the first connecting part coincides with the projection of the rotation surface of the blade, and the projection of the second connecting part at least partially coincides with the projection of the rotation surface.

10. The blade protective cover according to claim 9, characterized in that, The first connecting portion and the second connecting portion have a first surface facing the rotating surface, and at least a portion of the first surface is provided with a protrusion, the cross-section of the protrusion including at least one of the following shapes: triangle, cone, trapezoid, teardrop.

11. The blade protective cover according to claim 1, characterized in that, The first connecting portion and the second connecting portion have a second surface facing away from the blade, and at least a portion of the second surface is provided with a groove; and / or, The cover has an arc-shaped structure and a third side facing downward, the third side having at least a groove.

12. The blade protective cover according to claim 1, characterized in that, The blade protection cover includes at least two cover units, one of which has a plug-in portion and the other has a mating portion. When the plug-in portion and the mating portion are connected, the two cover units are in a connected state. The end of the mating portion facing the plug-in portion is recessed inward to form a receiving groove. The insertion part extends into the receiving groove and engages with the receiving groove to connect the insertion part and the engaging part; The plug-in portion is configured as a cylindrical structure with a polygonal cross-section; The mating part includes: Multiple ribs protrude from the inner sidewall of the receiving groove at intervals, so as to abut against the sidewall of the plug-in portion in the connected state and to make an interference fit with the plug-in portion; And / or, the shield unit further includes: A shoulder protrudes circumferentially from the insertion portion to abut against the open end of the mating portion in the connected state, preventing the insertion portion from moving further along the insertion direction.

13. An unmanned aerial vehicle, characterized in that, include: body; Multiple arms; A first fisheye lens, wherein the first fisheye lens has a first splicing area; The second fisheye lens has a second splicing area, and the area that neither the second splicing area nor the first splicing area can cover constitutes a splicing blind zone. The blade protection cover as described in any one of claims 1 to 12.

14. An unmanned aerial vehicle, characterized in that, include: body; Multiple arms, each with a propeller at the end furthest from the fuselage; Multiple fisheye lenses are used to stitch together images to form a panoramic image, and the area outside the panoramic image constitutes a stitching blind zone. Blade protector, the blade protector comprising: At least one protective shield unit, the protective shield unit comprising: A fixing part is connected to the arm or the body; The cover is located on the outside of some of the propeller blades; A connecting part, the two ends of which are respectively connected to the cover and the fixing part; The propeller protective cover is located within the splicing blind zone of the unmanned aerial vehicle.

Images