Multi-rotor unmanned aerial vehicle

Abstract

The utility model discloses a multi-rotor unmanned aerial vehicle which comprises a rotor protection cover, a support, a plurality of rotors and a plurality of connecting mechanisms, the rotors and the connecting mechanisms are mounted on the support, each connecting mechanism at least comprises a fastening mechanism and a positioning mechanism, and the rotor protection cover is fixed to the support through the fastening mechanisms and covers the rotors. The positioning mechanism and the fastening mechanism are adjacently arranged, and the two ends of the positioning mechanism are connected with the rotor wing protection cover and the support respectively so as to limit rotation of the rotor wing protection cover relative to the support. According to the multi-rotor unmanned aerial vehicle, the rotor protection cover is arranged on the support of the multi-rotor unmanned aerial vehicle, the rotor protection cover can cover the rotor so as to protect the rotor, the rotor protection cover is fixed to the support through the multiple fastening mechanisms, the fastening mechanisms and the positioning mechanisms can be arranged adjacently, and the positioning mechanisms are matched with the fastening mechanisms so that the rotor can be protected. Therefore, the rotor protection cover is limited to rotate relative to the support, connection between the rotor protection cover and the support is more stable, the rotor protection cover is prevented from colliding with the rotor, and the flight performance and safety of the unmanned aerial vehicle are guaranteed.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of unmanned aerial vehicles (UAVs), and in particular to a multi-rotor UAV. Background Art

[0002] Drones can be categorized as fixed-wing and rotary-wing based on their propulsion system. Multi-rotor drones, on the other hand, rely on the coordination of multiple rotors to achieve lift and azimuth. To protect the rotors, rotary-wing drones typically employ a protective cover.

[0003] In the existing multi-rotor drone blade guard structure, the rotor guard and the drone bracket are usually directly fixed with a screw. Although this connection method is simple, during use, due to external forces, the rotor guard and the drone bracket are prone to relative rotation, resulting in an unstable connection between the rotor guard and the drone bracket and relative deformation. In severe cases, the propeller may hit the rotor guard, affecting the flight performance and safety of the drone. Utility Model Content

[0004] The embodiment of the utility model provides a multi-rotor drone, which is used to solve the technical problem of unstable connection between the rotor protection cover and the drone bracket of the multi-rotor drone.

[0005] To achieve the above-mentioned objectives, an embodiment of the present invention provides a multi-rotor UAV, comprising a rotor hood, a bracket, a plurality of rotors mounted on the bracket, and a plurality of connecting mechanisms, each of the connecting mechanisms comprising at least a fastening mechanism and a positioning mechanism, the rotor hood being fixed to the bracket through the fastening mechanism and covering the rotor, the positioning mechanism being arranged adjacent to the fastening mechanism and having both ends connected to the rotor hood and the bracket respectively to limit the rotation of the rotor hood relative to the bracket.

[0006] In some embodiments, the positioning mechanism includes a positioning column provided on the rotor protection cover, and the bracket is provided with a positioning hole corresponding to the positioning column.

[0007] In some embodiments, the positioning column is a rubber column fixed on the rotor protection cover, and the positioning hole on the bracket is a blind hole.

[0008] In some embodiments, the positioning column is a positioning screw, and the rotor protective cover is provided with a protective cover positioning hole corresponding to the positioning hole, and the positioning screw passes through the protective cover positioning hole and is threadedly connected to the positioning hole.

[0009] In some embodiments, the fastening mechanism is a fastening screw, the rotor protection cover is provided with a first connecting hole for the fastening screw to pass through, and the bracket is provided with a second connecting hole corresponding to the first connecting hole.

[0010] In some embodiments, the first connection hole is a through hole passing through the rotor protection cover, and the second connection hole is a blind hole or a through hole.

[0011] In some embodiments, when the second connecting hole is a blind hole, the second connecting hole is an internal threaded hole compatible with the fastening screw.

[0012] In some embodiments, the rotor protective cover includes sub-protective covers of the same number as the rotors, and multiple sub-protective covers are connected to form a cover body covered on the bracket, each sub-protective cover is correspondingly mounted on one of the rotors, and each sub-protective cover is connected to the bracket through at least one connecting mechanism.

[0013] In some embodiments, the bracket is in the shape of a cross with four edges, the four rotors are symmetrically mounted on the four edges of the bracket, and the connecting mechanism is located at the ends of the edges.

[0014] In some embodiments, the bracket further includes two supporting ridges, and ends of the two supporting ridges that are away from each other are connected to the rotor protection cover.

[0015] The embodiments of the present utility model have the following beneficial effects: a rotor protection cover is provided on the bracket of a multi-rotor UAV, the rotor protection cover can be arranged inside the rotor cover to protect the rotor, the rotor protection cover is fixed to the bracket by a plurality of fastening mechanisms, the fastening mechanism and the positioning mechanism can be arranged adjacent to each other, the positioning mechanism cooperates with the fastening mechanism, thereby limiting the rotation of the rotor protection cover relative to the bracket, making the connection between the rotor protection cover and the bracket more stable, avoiding the rotor protection cover from colliding with the rotor, and ensuring the flight performance and safety of the UAV.

[0016] In addition to the above-described purposes, features and advantages, the embodiments of the present invention have other purposes, features and advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the embodiments of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic structural diagram of the multi-rotor UAV of the present invention;

[0019] Figure 2 This is a projection view of the multi-rotor drone of the utility model from one perspective;

[0020] Figure 3 Figure 2 AA cross-sectional view;

[0021] Figure 4 A schematic structural diagram of the bracket and rotors of the multi-rotor UAV of the present invention;

[0022] Figure 5 A schematic structural diagram of a rotor protection cover for a multi-rotor UAV of the present invention.

[0023] The numbers in the figure represent:

[0024] 1. Rotor protection cover; 11. First connecting hole; 2. Bracket; 21. Positioning hole; 22. Second connecting hole; 23. Edge; 24. Supporting edge; 3. Rotor; 4. Connecting mechanism; 41. Fastening mechanism; 42. Positioning mechanism; 421. Positioning column. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the technical solutions of the embodiments of the present invention in conjunction with the accompanying drawings and specific embodiments. In addition, unless otherwise defined, the technical terms or scientific terms used in the description of this application should be the ordinary meanings understood by those skilled in the art in the field to which this application belongs. The words "upper", "lower", "left", "right", "center", "vertical", "horizontal", "inside", "outside" and the like used in the description of this application are only used to indicate relative directions or positional relationships, and do not imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. When the absolute position of the described object changes, its relative positional relationship may also change accordingly, and therefore cannot be understood as a limitation on this application. The "first", "second", "third" and similar terms used in the description of this application are only used for descriptive purposes to distinguish different components, and cannot be understood as indicating or implying relative importance. The "one", "an" or "the" and similar words used in the description of this application should not be understood as an absolute limitation on quantity, but should be understood as the presence of at least one. The words “include” or “comprising” and the like used in the description of this application mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects.

[0026] It should also be noted that, unless otherwise clearly specified and limited, the words "install", "connect", "connect" and similar terms used in the description of this application should be understood in a broad sense. For example, the connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between two components. Technical personnel in the field can understand their specific meanings in this application according to the specific circumstances.

[0027] like Figure 1 and Figure 2 As shown, the multi-rotor drone of this embodiment includes a rotor protection cover 1, a bracket 2, a plurality of rotors 3 mounted on the bracket 2 and a plurality of connecting mechanisms 4, each connecting mechanism 4 includes at least a fastening mechanism 41 and a positioning mechanism 42, the rotor protection cover 1 is fixed to the bracket 2 and covers the rotor 3 through a plurality of fastening mechanisms 41, the positioning mechanism 42 is arranged adjacent to the fastening mechanism 41 and the two ends are respectively connected to the rotor protection cover 1 and the bracket 2 to limit the rotation of the rotor protection cover 1 relative to the bracket 2.

[0028] Among them, the rotors 3 in this embodiment are specifically four symmetrically distributed, and the rotor protection cover 1 is fixed to the bracket 2 through several fastening mechanisms 41, so that the rotor protection cover 1 covers the rotor 3 on the bracket 2. The rotor protection cover 1 can protect the propeller of the rotor 3 from being invaded by foreign objects, thereby improving the reliability of the multi-rotor UAV during flight. A positioning mechanism 42 is arranged next to each fastening mechanism 41, and the two ends of the positioning mechanism 42 are respectively connected to the rotor protection cover 1 and the bracket 2, so that the fastening mechanism 41 and the positioning mechanism 42 constitute a double fixed structure, which cooperates with each other to prevent the rotor protection cover 1 from rotating relative to the bracket 2, thereby ensuring the stability of the connection between the rotor protection cover 1 and the bracket 2.

[0029] In this embodiment, a rotor protection cover 1 is provided on the bracket 2 of the multi-rotor UAV to protect the rotor. The rotor protection cover 1 is fixed to the bracket 2 by a plurality of fastening mechanisms 41, and a positioning mechanism 42 is provided next to each fastening mechanism 41. The positioning mechanism 42 cooperates with the fastening mechanism 41 to limit the rotation of the rotor protection cover 1 relative to the bracket 2, making the connection between the rotor protection cover 1 and the bracket 2 more stable, avoiding the rotor protection cover 1 from colliding with the rotor, and ensuring the flight performance and safety of the UAV.

[0030] In one possible embodiment, Figures 3 to 5 As shown, the positioning mechanism 42 includes a positioning column 421 provided on the rotor protection cover 1 , and a positioning hole 21 corresponding to the positioning column 421 is provided on the bracket 2 .

[0031] It can be understood that one end of the positioning column 421 is provided on the rotor protection cover 1, and the other end is inserted into the positioning hole 21. When the rotor protection cover 1 rotates relative to the bracket 2 with the fastening mechanism 41 as the axis, the positioning column 421 hits the wall of the positioning hole 21 to limit the rotation of the rotor protection cover 1 relative to the bracket 2, thereby making the connection between the rotor protection cover 1 and the bracket 2 more stable. It should be noted that in other embodiments, the positioning column 421 can also be provided on the bracket 2, and a positioning hole corresponding to the positioning column 421 can be provided on the rotor protection cover 1.

[0032] In a possible embodiment, the positioning column 421 is a rubber column fixed on the rotor protection cover 1, and the positioning hole 21 on the bracket 2 is a blind hole.

[0033] Specifically, the positioning column 421 is a rubber column that is easily fixed on the rotor protection cover 1. When the rotor protection cover 1 is set on the bracket 2, the rubber column is aligned with the positioning hole 21 and then inserted to achieve positioning. The positioning hole 21 on the bracket 2 is a blind hole to prevent the rubber column from exceeding the positioning hole 21, so as to avoid the rubber column protruding from the positioning hole 21 from getting caught on other objects when the drone is flying or landing.

[0034] In another possible embodiment, the positioning column 421 is a positioning screw, and the rotor protective cover 1 is provided with a protective cover positioning hole corresponding to the positioning hole 21 . The positioning screw passes through the protective cover positioning hole and is threadedly connected to the positioning hole 21 .

[0035] Among them, the positioning screw is fixed after passing through the protective cover positioning hole and the positioning hole 21, so as to realize the initial fixation of the rotor protective cover 1 and the bracket 2 while positioning them. The positioning screw cooperates with the fastening mechanism 41 and can also limit the rotation of the rotor protective cover 1 relative to the bracket 2.

[0036] In a possible embodiment, the fastening mechanism 41 is a fastening screw, the rotor protection cover 1 is provided with a first connection hole 11 for the fastening screw to pass through, and the bracket 2 is provided with a second connection hole 22 corresponding to the first connection hole 11.

[0037] Specifically, the first connecting hole 11 is a through hole passing through the rotor protective cover 1, and the second connecting hole 22 is a blind hole or a through hole. When the second connecting hole 22 is a blind hole, the second connecting hole 22 is an internal threaded hole adapted for a fastening screw.

[0038] It can be understood that after the fastening screw passes through the first connecting hole 11, it can pass through the second connecting hole 22 and then be connected to the nut for fixation; or an internal thread can be directly provided in the second connecting hole 22, so that the fastening screw passes through the first connecting hole 11 and cooperates with the internal thread of the second connecting hole 22 to achieve fixation. The first connecting hole 11 is a through hole, and its inner wall can be provided with an internal thread compatible with the fastening screw, or it can be a through hole only for the fastening screw to pass through. In other embodiments, the first connecting hole 11 can also be provided on the bracket 2, and the second connecting hole 22 can be provided on the rotor protective cover 1.

[0039] In a possible embodiment, the rotor protective cover 1 includes the same number of sub-protective covers 12 as the rotors 3, and multiple sub-protective covers 12 are connected to form a cover body arranged on the bracket 2, each sub-protective cover 12 is correspondingly mounted on a rotor 3, and each sub-protective cover 12 is connected to the bracket 2 through at least one connecting mechanism 4.

[0040] It can be understood that the rotor protection cover 1 in this embodiment is composed of four sub-protective covers 12 connected together. When the rotor protection cover 1 is mounted on the bracket, each sub-protective cover 12 is correspondingly mounted on a rotor 3, thereby covering all the rotors 3 and protecting all the rotors 3. In this embodiment, each sub-protective cover 12 is connected to the bracket 2 through a connecting mechanism 4 as an example. Each sub-protective cover 12 is connected to the bracket 2 by a connecting mechanism 4, so that the connection between the rotor protection cover 1 and the bracket 2 is more stable, and the rotor protection cover 1 can effectively protect all the rotors 3.

[0041] In one possible embodiment, Figure 4 As shown, the bracket 2 is in a cross shape with four edges 23 , the four rotors 3 are symmetrically mounted on the four edges 23 of the bracket 2 , and the connecting mechanism 4 is located at the end of the edge 23 .

[0042] It can be understood that the four rotors 3 are symmetrically installed to keep the multi-rotor drone balanced as a whole. The positioning hole 21 and the second connection hole 22 are arranged at one end of the edge 23 away from each other. The rotor 3 is arranged on the edge 23, and the rotor protection cover 1 is connected to the bracket 2 from the edge, which can cover the bracket 2 to the maximum extent, so that all rotors 3 are under the protection of the rotor protection cover 1.

[0043] In one possible embodiment, Figure 4 As shown, the bracket 2 further includes two supporting ridges 24 , and the ends of the two supporting ridges 24 that are away from each other are connected to the rotor protection cover 1 .

[0044] It can be understood that the two supporting ribs 24 are symmetrically arranged to enhance the strength of the multi-rotor drone 1. The ends of the supporting ribs 24 that are away from each other are connected to the rotor protection cover 1 by two screws to prevent rotation.

[0045] In the multi-rotor UAV provided in the above-mentioned embodiment of the present application, the rotor protection cover 1 is fixed to the bracket 2 by a plurality of fastening mechanisms 41, so that the rotor protection cover 1 covers all the rotors 3 on the bracket 2, protecting the propellers of the rotors 3 from being invaded by foreign objects, thereby improving the reliability of the multi-rotor UAV during flight. A positioning mechanism 42 is arranged next to each fastening mechanism 41, so that the fastening mechanism 41 and the positioning mechanism 42 form a double fixed structure, which cooperates with each other to prevent the rotor protection cover 1 from rotating relative to the bracket 2, ensure the stability of the connection between the rotor protection cover 1 and the bracket 2, and improve the flight reliability of the multi-rotor UAV.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A multi-rotor drone, characterized in that: The invention comprises a rotor protection cover (1), a bracket (2), a plurality of rotors (3) mounted on the bracket (2), and a plurality of connecting mechanisms (4), wherein each connecting mechanism (4) comprises at least a fastening mechanism (41) and a positioning mechanism (42), wherein the rotor protection cover (1) is fixed to the bracket (2) and covers the rotors (3) via the fastening mechanism (41), and the positioning mechanism (42) is arranged adjacent to the fastening mechanism (41) and has two ends respectively connected to the rotor protection cover (1) and the bracket (2) to limit the rotation of the rotor protection cover (1) relative to the bracket (2).

2. The multi-rotor UAV according to claim 1, characterized in that: The positioning mechanism (42) comprises a positioning column (421) provided on the rotor protection cover (1), and a positioning hole (21) corresponding to the positioning column (421) is provided on the bracket (2).

3. The multi-rotor UAV according to claim 2, characterized in that: The positioning column (421) is a rubber column fixed on the rotor protection cover (1), and the positioning hole (21) on the bracket (2) is a blind hole.

4. The multi-rotor UAV according to claim 2, characterized in that: The positioning column (421) is a positioning screw, and a protection cover positioning hole corresponding to the positioning hole (21) is provided on the rotor protection cover (1). The positioning screw passes through the protection cover positioning hole and is threadedly connected to the positioning hole (21).

5. The multi-rotor UAV according to claim 1, characterized in that: The fastening mechanism (41) is a fastening screw, the rotor protection cover (1) is provided with a first connecting hole (11) for the fastening screw to pass through, and the bracket (2) is provided with a second connecting hole (22) corresponding to the first connecting hole (11).

6. The multi-rotor UAV according to claim 5, characterized in that: The first connection hole (11) is a through hole that passes through the rotor protection cover (1), and the second connection hole (22) is a blind hole or a through hole.

7. The multi-rotor UAV according to claim 6, characterized in that: When the second connecting hole (22) is a blind hole, the second connecting hole (22) is an internal threaded hole adapted to the fastening screw.

8. The multi-rotor UAV according to claim 1, characterized in that: The rotor protection cover (1) comprises sub-protective covers (12) of the same number as the rotors (3); a plurality of the sub-protective covers (12) are connected to form a cover body that is covered on the bracket (2); each sub-protective cover (12) is correspondingly sleeved on one of the rotors (3), and each sub-protective cover (12) is connected to the bracket (2) via at least one connecting mechanism (4).

9. The multi-rotor UAV according to claim 1, characterized in that: The bracket (2) is in the shape of a cross with four edges (23), the four rotors (3) are symmetrically mounted on the four edges (23) of the bracket (2), and the connecting mechanism (4) is located at the end of the edge (23).

10. The multi-rotor UAV according to claim 8, characterized in that: The bracket (2) further comprises two supporting ridges (24), and the ends of the two supporting ridges (24) that are away from each other are connected to the rotor protection cover (1).

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