Unmanned aerial vehicle propeller protection device and unmanned aerial vehicle with same

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, in particular to an unmanned aerial vehicle propeller protection device and an unmanned aerial vehicle with the unmanned aerial vehicle propeller protection device. The protection ring mechanism comprises a longitudinal framework and a transverse framework; a first connecting part is arranged on the longitudinal framework, a second connecting part is arranged on the transverse framework, and the first connecting part and the second connecting part can be clamped with each other. According to the unmanned aerial vehicle propeller protection device and the unmanned aerial vehicle with the unmanned aerial vehicle propeller protection device, the protection ring mechanism is arranged to conduct isolation protection on the propeller, the protection ring mechanism is composed of the multiple longitudinal frameworks and the multiple transverse frameworks which are distributed in a crossed mode, each longitudinal framework and each transverse framework can be independently detached, installation is convenient, and the single framework can be conveniently replaced. When the protection ring is configured, the number of the skeletons can be reasonably configured according to objective conditions such as the body weight, the flight speed and the flight environment, and the applicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, in particular to a propeller protection device for an unmanned aerial vehicle and an unmanned aerial vehicle having the same. Background Art

[0002] A multi-rotor drone is a special unmanned helicopter with three or more rotor shafts. The motors on each shaft rotate to drive the rotors, thereby generating lift thrust. Multi-rotor drones are small in size, light in weight, low in noise, and good in concealment. They are widely used in aerial photography, reconnaissance, environmental monitoring and other fields.

[0003] The propeller speed of a conventional multi-rotor aerial photography drone is over 1,000 revolutions per minute, and the stability of the drone's flight is greatly affected by operating technology and the environment. If the high-speed rotating propeller of the drone collides with a person during flight, it will cause great harm to the human body.

[0004] At present, some drones isolate the blades by setting a protective cover on the outside of the propeller. When the drone collides with the outside, the protective cover can play a certain isolation and buffering role to prevent the propeller from being damaged. At the same time, it can protect external structures, animals and plants, especially the human body, to prevent them from being harmed by the high-speed rotating propeller.

[0005] However, the current propeller protection cover has certain shortcomings:

[0006] First, the protective cover is mostly made of metal or plastic structure. The metal structure is rigid enough, but it is heavy, which will greatly affect the flight ability and endurance of the drone itself. Although the plastic structure is light enough, it is brittle and easy to break and collapse in a collision, and the protection is insufficient;

[0007] Second, the existing protective cover is generally fixed directly on the drone frame, or disassembled as a whole through bolts and other structures. However, the completely fixed protective cover is not easy to replace after damage, and the use effect is not good. The protective cover that is disassembled as a whole needs to be fixed by bolts. The bolts themselves are made of metal materials, which will increase the weight of the drone and are more troublesome during disassembly. It is also easy to lose accessories.

[0008] Therefore, there is an urgent need for a drone propeller protection structure with good protection performance, sufficient elasticity, strong toughness, light weight and easy disassembly and assembly to fill the market gap. In view of this, we propose a drone propeller protection device and a drone having the same. Utility Model Content

[0009] The purpose of the embodiments of the utility model is to provide a UAV propeller protection device and a UAV having the same, which solves the current problem of lack of a UAV propeller protection structure with good protection performance, sufficient elasticity, strong toughness, light weight and easy disassembly and assembly.

[0010] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0011] A first aspect of an embodiment of the utility model provides a drone propeller protection device, comprising a drone frame and a protection ring mechanism arranged on the drone frame;

[0012] The protection ring mechanism includes a longitudinal frame and a transverse frame;

[0013] The longitudinal frame is provided with a first connection part, and the transverse frame is provided with a second connection part, and the first connection part and the second connection part can be engaged with each other;

[0014] The transverse frame and the longitudinal frame both include an inner frame made of a rigid material, and the outer portion of the inner frame is covered with an outer frame made of a flexible material;

[0015] The rack comprises a main frame, a mounting seat is fixedly connected to the main frame, and plug-in parts are provided at both ends of the longitudinal skeleton, and the plug-in parts are connected to the mounting seat in a plug-in manner.

[0016] As a preferred technical solution, the inner skeleton is an alloy wire made of shape memory alloy, and the outer skeleton is made of rubber or plastic, and is manufactured by 3D printing technology.

[0017] As a preferred technical solution, the first connecting portion includes a first protrusion formed on the longitudinal frame, the first protrusion is provided with a first notch, and the transverse frame can be embedded in the first notch to achieve interference fit;

[0018] The end of the first slot opening extends toward the inside of the first slot to form two symmetrical first flanges to stop one side of the transverse frame.

[0019] As a preferred technical solution, the second connecting portion includes a second protrusion formed on the transverse frame, and a second notch is formed on the second protrusion, and the second notch can be interference-fitted with the longitudinal frame;

[0020] The end of the second notch opening extends toward the inside of the second notch to form two symmetrical second flanges to stop one side of the longitudinal frame;

[0021] The first connecting portion also includes a third notch opened on the longitudinal frame, and the second flange can enter the third notch to achieve snap connection.

[0022] As a preferred technical solution, a first plug hole and a second plug hole are provided on the outer wall of the mounting seat, and the plug-in portion can be inserted into the first plug hole or the second plug hole to achieve an interference fit;

[0023] A groove is provided on the plug-in portion on one of the longitudinal frames, and the plug-in portion on the other longitudinal frame can be inserted into the groove;

[0024] The top of the first plug hole is connected to the bottom of the second plug hole.

[0025] As a preferred technical solution, the fixed end surface of the plug-in portion protrudes outward to form a stop protrusion for abutting against the mounting seat;

[0026] The longitudinal frame is formed with concave and convex parts for increasing the roughness of the surface of the longitudinal frame;

[0027] The transverse frame is externally sleeved with a reinforcing piece, which is made of engineering plastic or light metal.

[0028] As a preferred technical solution, a straight plate is fixedly connected to the main frame, and a groove and a through hole for the inner frame to pass through are opened on the straight plate;

[0029] A connecting groove is formed at the end of the transverse frame, and two symmetrical protrusions are formed on both sides of the inner wall of the connecting groove, and the protrusions can enter the groove;

[0030] One end of the inner frame passes through the connecting groove and is inserted into the through hole.

[0031] As a preferred technical solution, a concave groove is provided on the transverse frame, the concave groove is located outside the connecting groove, and an elastic portion is formed between the concave groove and the connecting groove;

[0032] A U-shaped clamping spring is arranged in the concave groove, and the U-shaped clamping spring provides elastic force for the elastic part, so that the elastic part clamps the straight plate.

[0033] As a preferred technical solution, an X-shaped bracket is fixedly connected to the main frame, and a cross bar is provided on the X-shaped bracket, and the cross bar has a through hole for the alloy wire inner skeleton to pass through;

[0034] An extension block is provided at the end of the transverse frame, a gap is formed between the extension block and the transverse frame, the inner wall of the gap is fitted with the cross bar, and one end of the inner frame passes through the gap and is inserted into the through hole on the cross bar.

[0035] A second aspect of an embodiment of the utility model provides a drone with a drone propeller protection device, including the drone propeller protection device;

[0036] There are eight mounting seats, which are divided into four groups. The two mounting seats in each group are symmetrical in the vertical direction, and the four groups of mounting seats are distributed in a cross pattern.

[0037] Two propeller assemblies are provided between each set of mounting seats;

[0038] The propeller assembly comprises a motor, which is fixedly mounted on a mounting seat, and a blade is drivingly connected to one end of the motor away from the mounting seat.

[0039] By means of the above technical solution, the utility model provides a drone propeller protection device and a drone having the same, which has at least the following beneficial effects:

[0040] (1) The UAV propeller protection device and the UAV having the same isolate and protect the propeller by setting a protection ring mechanism. The protection ring mechanism is composed of a plurality of longitudinal frames and a plurality of transverse frames that are cross-distributed. Each longitudinal frame and transverse frame can be disassembled separately, which is convenient for installation and replacement of a single frame. When configuring the protection ring, the number of frames can be reasonably configured according to objective conditions such as the weight of the aircraft, flight speed, and flight environment. It has strong applicability and can effectively reduce the load on the aircraft while providing protection, thereby achieving lightweight.

[0041] (2) The propeller protection device for the UAV and the UAV having the same, the transverse frame and the longitudinal frame are both composed of an inner frame and an outer frame. The inner frame is an alloy wire made of memory alloy, which can provide sufficient support and strength for the protection ring to ensure its protection capability. The outer frame is a polymer elastic material, which is tightly wrapped around the outer part of the inner frame through 3D printing technology, reducing the weight while providing sufficient elasticity, so that the protection ring has both protection strength, elasticity and toughness. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0043] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0044] Figure 2 This is a schematic diagram of the overall structure of the protection ring mechanism in the embodiment of the utility model;

[0045] Figure 3 A cross-sectional view of the longitudinal skeleton in the embodiment of the utility model;

[0046] Figure 4 It is a cross-sectional view of the transverse skeleton in the embodiment of the utility model;

[0047] Figure 5 This is a schematic diagram of a flattened transverse frame in an embodiment of the utility model;

[0048] Figure 6 An exploded view of the longitudinal frame and the transverse frame in the embodiment of the utility model;

[0049] Figure 7 A schematic diagram of a frame in an embodiment of the utility model;

[0050] Figure 8 It is a schematic diagram of the main frame in the embodiment of the utility model;

[0051] Fig. 9 This is a connection diagram of the longitudinal frame and the mounting seat in the embodiment of the utility model;

[0052] Fig.10 A cross-sectional view of a mounting seat in an embodiment of the utility model;

[0053] Fig.11 It is a connection diagram of two longitudinal skeletons in the embodiment of the utility model;

[0054] Fig.12 This is a schematic diagram of the overall structure of the third embodiment of the present utility model;

[0055] Fig.13 It is a cross-sectional view of a straight plate in an embodiment of the utility model;

[0056] Fig.14 A schematic diagram of a U-shaped retaining spring in an embodiment of the utility model;

[0057] Fig.15 This is a schematic diagram of the overall structure of the fourth embodiment of the present utility model;

[0058] Fig.16 It is a schematic diagram of an extension block in an embodiment of the utility model;

[0059] Fig.17 This is a schematic diagram of the overall structure of Embodiment 5 of the present utility model;

[0060] Fig.18 A schematic diagram of a reinforcement member in an embodiment of the utility model;

[0061] Fig.19 Schematic diagram of a propeller assembly in an embodiment of the utility model.

[0062] In the figure: 1, frame; 11, main frame; 12, straight plate; 13, X-shaped bracket; 131, cross bar; 132, triangular area; 14, mounting seat; 141, first socket; 142, second socket; 2, propeller assembly; 21, motor; 22, blade; 3, protection ring mechanism; 31, longitudinal skeleton; 311, first protrusion; 312, first notch; 313, first flange; 314, third notch; 315, plug-in part; 316, stop protrusion; 317, concave-convex part; 32, transverse skeleton; 321, second protrusion; 322, second notch; 323, second flange; 324, elastic part; 325, connecting groove; 326, concave groove; 327, U-shaped retaining spring; 328, convex block; 329, extension block; 3210, notch; 33, reinforcement. DETAILED DESCRIPTION

[0063] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0064] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0065] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0066] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0067] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0068] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0069] Embodiment 1

[0070] See also Figure 1-Figure 6 , the utility model provides a propeller protection device for a UAV.

[0071] The UAV propeller protection device includes a UAV frame 1, a propeller assembly 2 arranged on the frame 1, and a protection ring mechanism 3 for isolating the propeller assembly 2. The protection ring mechanism 3 is covered on the outside of the propeller assembly 2 to isolate and protect the propeller assembly 2.

[0072] The protection ring mechanism 3 includes a plurality of longitudinal frames 31 and a plurality of transverse frames 32. The longitudinal frames 31 are plug-in connected to the frame 1, and the transverse frames 32 are snapped onto the longitudinal frames 31. The plurality of longitudinal frames 31 and the plurality of transverse frames 32 are cross-distributed, and each longitudinal frame 31 and transverse frame 32 can be disassembled separately, which is convenient for installation and replacement of a single frame. When configuring the protection ring mechanism 3, the number of frames can be reasonably configured according to objective conditions such as the weight of the aircraft, the flight speed, and the flight environment. It has strong applicability, can effectively reduce the load on the aircraft while providing protection, and achieves lightweighting.

[0073] Combination Figure 3 and Figure 4 As shown, the transverse frame 32 and the longitudinal frame 31 both include an inner frame made of a rigid material, and the outer portion of the inner frame is covered with an outer frame made of a flexible material. The outer frame is manufactured by 3D printing technology.

[0074] Furthermore, the inner frame is an alloy wire, and the alloy wire is made of a shape memory alloy, such as a titanium-nickel alloy. Shape memory alloys have "superelasticity". Under the action of external forces, shape memory alloys have a much greater deformation recovery ability than ordinary metals, and can withstand much greater deformation than ordinary materials without damage. The protective ring inner frame made of it has excellent toughness and protective shape.

[0075] The exoskeleton is made of elastic polymer materials such as rubber or plastic, preferably TPU, TPE, silicone, PU, ​​etc. The protective ring exoskeleton made of it not only has good elasticity, but also can greatly reduce the weight of the protective ring, reduce the burden on the drone, and achieve lightweight.

[0076] As an implementation mode, a first connection portion is provided on the longitudinal frame 31, and a second connection portion is provided on the transverse frame 32. The first connection portion and the second connection portion can be engaged with each other to achieve the limitation of the two frames.

[0077] Combination Figure 6 As shown, the first connecting portion includes a first protrusion 311 formed on the longitudinal frame 31, and a first slot 312 is provided on the first protrusion 311. The height of the first slot 312 is not greater than the height of the transverse frame 32. The transverse frame 32 can be embedded in the first slot 312 through its own elastic contraction ability to achieve an interference fit, thereby playing a limiting role.

[0078] Furthermore, the end of the opening of the first notch 312 extends into the first notch 312 to form two symmetrical first flanges 313. When the transverse frame 32 is completely embedded in the first notch 312, the first flanges 313 can stop the outside of the transverse frame 32, thereby improving the tightness of the connection between the transverse frame 32 and the longitudinal frame 31 and preventing the two from being separated from each other. Since the outside of the frame is made of a highly elastic material, only a certain degree of force is required to separate the first flange 313 from the transverse frame 32, thereby improving the convenience of disassembly and assembly.

[0079] Furthermore, the structure of the second connection part is substantially the same as that of the first connection part, and includes a second protrusion 321 formed on the transverse frame 32, and a second notch 322 is provided on the second protrusion 321, and the second notch 322 can be interference-fitted with the longitudinal frame 31 to achieve a limiting effect. The end of the opening of the second notch 322 extends into the second notch 322 to form two symmetrical second flanges 323 to stop one side of the longitudinal frame 31, further improving the stability of the connection between the transverse frame 32 and the longitudinal frame 31.

[0080] In addition, the first notch 312 can be used to limit the longitudinal frame 31 and the transverse frame 32 in the vertical direction, and the second notch 322 can be used to limit the longitudinal frame 31 and the transverse frame 32 in the horizontal direction, thereby avoiding sliding displacement between the longitudinal frame 31 and the transverse frame 32.

[0081] In addition, the first connection portion further includes a third notch 314 provided on the longitudinal frame 31 . The third notch 314 is used to cooperate with the second flange 323 , which can further improve the limiting effect.

[0082] Embodiment 2

[0083] See also Figure 1 ,as well as Figure 7-Figure 11 On the basis of the first embodiment, the UAV is a double-propeller multi-rotor UAV, the number of propeller assemblies 2 is twice the number of protection circle mechanisms 3, and each protection circle mechanism 3 covers two propeller assemblies 2 for isolation and protection.

[0084] Combination Figure 7 As shown, the frame 1 includes a main frame 11, and an even number of mounting seats 14 are fixedly connected to the main frame 11. The number of mounting seats 14 is twice the number of the protection ring mechanism 3, and is used to install the longitudinal frame 31

[0085] Taking eight as an example, the eight mounting seats 14 are divided into four groups, each group has two, the two mounting seats 14 are symmetrical in the vertical direction, and the four groups of mounting seats 14 are distributed in a cross pattern. The propeller assembly 2 is installed between the two symmetrical mounting seats 14 above and below.

[0086] As an embodiment, the mounting seat 14 is cylindrical, and a first insertion hole 141 is formed on the outer wall of the mounting seat 14 along one diameter direction thereof, and a second insertion hole 142 is formed along another diameter direction thereof, and the first insertion hole 141 and the second insertion hole 142 are perpendicular to each other. The longitudinal frame 31 can be inserted into the first insertion hole 141 or the second insertion hole 142 to achieve an interference fit, thereby limiting the end of the longitudinal frame 31.

[0087] In this embodiment, each protection ring mechanism 3 includes two longitudinal frames 31 and two transverse frames 32. Each longitudinal frame 31 is provided with two first connection parts, and the two first connection parts are symmetrical to each other in the vertical direction. Each transverse frame 32 is provided with two second connection parts, and the two second connection parts are respectively connected to the first connection parts on the two transverse frames 32, so that the two transverse frames 32 are set up in parallel in the vertical direction.

[0088] Combination Fig.11 As shown, both ends of the longitudinal skeleton 31 are provided with an inserting portion 315 for inserting into the first plug hole 141 or the second plug hole 142. The fixed end surface of the inserting portion 315 protrudes outward to form a stop protrusion 316 for abutting against the mounting seat 14 to indicate the insertion depth and achieve a positioning effect.

[0089] Furthermore, a groove is provided on the plug-in portion 315 of one of the longitudinal frames 31, and the plug-in portion 315 of the other longitudinal frame 31 can be embedded in the groove, thereby limiting the relative movement of the two longitudinal frames 31 in a horizontal direction and improving the tightness of the connection.

[0090] Correspondingly, the top of the first plug hole 141 is connected to the bottom of the second plug hole 142 to avoid motion interference.

[0091] See also Fig. 9 A concave-convex portion 317 is formed on the longitudinal frame 31 to increase the friction force there, making it easier for the user to plug and unplug the longitudinal frame 31.

[0092] Embodiment 3

[0093] See also Figure 1 , Figure 12-14 On the basis of the second embodiment, a plurality of supporting members are fixedly connected to the main frame 11, and a connecting portion is provided at the end of the transverse skeleton 32, which is connected to the supporting members, so that the transverse skeleton 32 can be fixed to the main frame 11, thereby improving the stability of the transverse skeleton 32.

[0094] In this embodiment, the support member includes a straight plate 12, both ends of which are fixed to the main frame 11, and a groove and a through hole for the alloy wire inner frame to pass through are opened on the straight plate 12. A reserved hole is correspondingly provided between the straight plate 12 and the connecting part, so that the user can fix the transverse frame 32 and the straight plate 12 together by bolts.

[0095] Combination Fig.13 and Fig.14 As shown, a connection groove 325 is formed on the free end of the connection part, and the connection groove 325 can surround the three sides of the straight plate 12. Two symmetrical protrusions 328 are formed on both sides of the inner wall of the connection groove 325. The protrusions 328 can enter the groove to improve the limiting effect between the transverse skeleton 32 and the straight plate 12. One end of the alloy wire inner skeleton passes through the connection groove 325 and can be inserted into the through hole. The deformation ability of the alloy wire is used to apply a certain degree of force to the inner wall of the through hole to improve the stability of the connection.

[0096] As an embodiment, a concave groove 326 is provided on the connection portion, and the concave groove 326 is located outside the connection groove 325, and an elastic portion 324 is formed between the concave groove 326 and the connection groove 325. A U-shaped clamping spring 327 is provided in the concave groove 326, and the U-shaped clamping spring 327 provides an inward retraction force for the elastic portion 324, so that the elastic portion 324 is tightened inwardly to clamp the straight plate 12, thereby improving the tightness between the transverse frame 32 and the straight plate 12.

[0097] Embodiment 4

[0098] See also Figure 1 , Fig.15 as well as Fig.16 On the basis of the second embodiment, a plurality of supporting members are fixedly connected to the main frame 11, and a connecting portion is provided at the end of the transverse skeleton 32, which is connected to the supporting members, so that the transverse skeleton 32 can be fixed to the main frame 11, thereby improving the stability of the transverse skeleton 32.

[0099] In this embodiment, the support member includes an X-shaped bracket 13, which is fixed on the main frame 11. The stability of the main frame 11 can be effectively improved by setting the X-shaped bracket 13. A cross bar 131 is provided on the X-shaped bracket 13, and a triangular area 132 is formed between the cross bar 131 and the X-shaped bracket 13. The cross bar 131 is a through hole for the alloy wire inner skeleton to pass through.

[0100] See also Fig.16 An extension block 329 is provided on the free end of the connection portion, and a notch 3210 is formed between the extension block 329 and the connection portion, and one end of the alloy wire inner frame passes through the notch 3210. The extension block 329 can be inserted into the triangular area 132 and fit on two surfaces of the triangular area 132. At this time, the alloy wire inner frame is inserted into the through hole on the cross bar 131, and a tight connection with the X-shaped bracket 13 is achieved through the deformation ability of the extension block 329 and the alloy wire inner frame itself.

[0101] As an implementation manner, a semicircular hole is provided on the extension block 329 , and two semicircular holes can be assembled into a complete circular hole, so that the user can fix the two transverse frames 32 and the X-shaped bracket 13 together by bolts.

[0102] Embodiment 5

[0103] See also Fig.17 On the basis of the second embodiment, a plurality of supporting members are fixedly connected to the main frame 11, and a connecting portion is provided at the end of the transverse skeleton 32, which is connected to the supporting members, so that the transverse skeleton 32 can be fixed to the main frame 11, thereby improving the stability of the transverse skeleton 32.

[0104] In this embodiment, the support member includes a straight plate 12 and an X-shaped bracket 13. The structure of the straight plate 12 is the same as that of the third embodiment, and the structure of the X-shaped bracket 13 is the same as that of the fourth embodiment.

[0105] Furthermore, the connection portion on one end of the transverse skeleton 32 adopts the structure of the third embodiment, and the connection portion on the other end adopts the structure of the fourth embodiment. The transverse skeleton 32 is respectively connected to the straight plate 12 and the X-shaped bracket 13 through two different connection portions.

[0106] Embodiment 6

[0107] See also Fig.17 On the basis of the first embodiment, the protection ring mechanism 3 further includes a reinforcing member 33, which can be sleeved outside the transverse frame 32 and wrap the transverse frame 32 on three sides. The reinforcing member 33 is made of engineering plastic or light metal and has a thickness of no more than one centimeter, which can enhance the strength of the frame.

[0108] Embodiment 7

[0109] See also Figure 1Based on embodiments one to six, this embodiment provides a drone with a drone propeller protection device.

[0110] Specifically, there are eight mounting seats 14 , which are divided into four groups. The two mounting seats 14 in each group are symmetrical in the vertical direction, and the four groups of mounting seats 14 are distributed in a cross pattern. Two propeller assemblies 2 are arranged between each group of mounting seats 14 .

[0111] The propeller assembly 2 includes a motor 21 , which is fixedly mounted on the mounting seat 14 , and a blade 22 is drivingly connected to one end of the motor 21 away from the mounting seat 14 .

[0112] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0113] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A drone propeller protection device, comprising a drone frame (1) and a protection ring mechanism (3) arranged on the drone frame (1), characterized in that: The protection ring mechanism (3) comprises a longitudinal frame (31) and a transverse frame (32); The longitudinal frame (31) is provided with a first connection portion, and the transverse frame (32) is provided with a second connection portion, and the first connection portion and the second connection portion can be engaged with each other; The transverse frame (32) and the longitudinal frame (31) both include an inner frame made of a rigid material, and the outer portion of the inner frame is coated with an outer frame made of a flexible material; The frame (1) comprises a main frame (11), a mounting seat (14) is fixedly connected to the main frame (11), and plug-in parts (315) are provided at both ends of the longitudinal frame (31), and the plug-in parts (315) are plug-in-plug-connected to the mounting seat (14).

2. The UAV propeller protection device according to claim 1, characterized in that: The inner frame is an alloy wire made of shape memory alloy, and the outer frame is made of rubber or plastic, and is formed by 3D printing technology.

3. The UAV propeller protection device according to claim 1, characterized in that: The first connecting portion comprises a first protruding portion (311) formed on the longitudinal frame (31), a first notch (312) is provided on the first protruding portion (311), and the transverse frame (32) can be embedded in the first notch (312) to achieve interference fit; The end of the opening of the first notch (312) extends toward the inside of the first notch (312) to form two symmetrical first flanges (313) to stop one side of the transverse frame (32).

4. The UAV propeller protection device according to claim 3 is characterized in that: The second connecting portion comprises a second protruding portion (321) formed on the transverse frame (32), the second protruding portion (321) is provided with a second notch (322), and the second notch (322) can be interference-fitted with the longitudinal frame (31); The end of the opening of the second notch (322) extends toward the inside of the second notch (322) to form two symmetrical second flanges (323) to stop one side of the longitudinal frame (31); The first connection portion also includes a third notch (314) formed on the longitudinal frame (31), and the second flange (323) can enter the third notch (314) to achieve snap connection.

5. The drone propeller protection device according to claim 1, characterized in that: A first plug hole (141) and a second plug hole (142) are provided on the outer wall of the mounting seat (14), and the plug-in portion (315) can be inserted into the first plug hole (141) or the second plug hole (142) to achieve an interference fit; A groove is formed on the plug-in portion (315) on one of the longitudinal frames (31), and the plug-in portion (315) on the other longitudinal frame (31) can be embedded in the groove; The top of the first plug hole (141) is connected to the bottom of the second plug hole (142).

6. The drone propeller protection device according to claim 1, characterized in that: The fixed end surface of the plug-in portion (315) protrudes outward to form a stop protrusion (316) for abutting against the mounting seat (14); The longitudinal frame (31) is formed with a concave-convex portion (317) for increasing the roughness of the surface of the longitudinal frame (31); The transverse frame (32) is externally sleeved with a reinforcing member (33), and the reinforcing member (33) is made of engineering plastic or light metal.

7. The drone propeller protection device according to claim 1, characterized in that: A straight plate (12) is fixedly connected to the main frame (11), and the straight plate (12) is provided with a groove and a through hole for the inner frame to pass through; The end of the transverse frame (32) is provided with a connection groove (325), and two symmetrical protrusions (328) are formed on both sides of the inner wall of the connection groove (325), and the protrusions (328) can enter the groove; One end of the inner frame passes through the connection groove (325) and is inserted into the through hole.

8. The UAV propeller protection device according to claim 7, characterized in that: The transverse frame (32) is provided with a concave groove (326), the concave groove (326) is located outside the connecting groove (325), and an elastic portion (324) is formed between the concave groove (326) and the connecting groove (325); A U-shaped retaining spring (327) is arranged in the concave groove (326), and the U-shaped retaining spring (327) provides elastic force for the elastic part (324), so that the elastic part (324) clamps the straight plate (12).

9. The drone propeller protection device according to claim 7 or 8, characterized in that: An X-shaped bracket (13) is fixedly connected to the main frame (11), and a cross bar (131) is provided on the X-shaped bracket (13), wherein the cross bar (131) is a through hole for the alloy wire inner skeleton to pass through; An extension block (329) is provided at the end of the transverse frame (32), a notch (3210) is formed between the extension block (329) and the transverse frame (32), an inner wall of the notch (3210) is in contact with the transverse block (131), and one end of the inner frame passes through the notch (3210) and is inserted into a through hole on the transverse block (131).

10. A drone with a drone propeller protection device, comprising the drone propeller protection device according to any one of claims 1 to 9, characterized in that: The number of the mounting seats (14) is eight, which are divided into four groups, the two mounting seats (14) in each group are symmetrical in the vertical direction, and the four groups of mounting seats (14) are distributed in a cross-shaped manner; Two propeller assemblies (2) are arranged between each set of mounting seats (14); The propeller assembly (2) comprises a motor (21), wherein the motor (21) is fixedly mounted on a mounting seat (14), and a blade (22) is drivingly connected to one end of the motor (21) away from the mounting seat (14).

Images