An installation structure for a multi-axis drone arm power output component and a drone

Abstract

The present invention discloses an installation structure for a multi-axis drone arm power output component and a drone. The installation structure for the multi-axis drone arm power output component includes: an arm provided with a mounting hole; a mounting seat installed in the mounting hole, the mounting seat having an opening and a mounting cavity communicating with the opening, the side wall of the mounting seat being provided with an elastic first elastic portion, at least a part of the first elastic portion being located in the mounting hole, the first elastic portion being located on the side wall corresponding to the mounting cavity and capable of elastically deforming along the radial direction of the mounting hole; a power output member having a mounting portion and a power portion for providing flight power, the mounting portion being installed in the mounting cavity, the power portion being located outside the mounting cavity, the power output member being provided with a first extrusion portion on the outer peripheral surface of the mounting portion, the first extrusion portion being capable of extruding the first elastic portion to expand outward along the radial direction of the mounting hole so that an interference fit is formed between the first extrusion portion, the first elastic portion and the mounting hole. The installation and disassembly efficiency of the motor, the motor seat and the arm is improved, and the disassembly life is higher.

Description

Technical Field

[0001] The present invention relates to the field of power installation structures for unmanned aerial vehicles, and particularly to an installation structure for a power output component of a multi-axis unmanned aerial vehicle arm and an unmanned aerial vehicle. Background Art

[0002] Currently, in the power components of multi-rotor arms, the motor is commonly fastened to the motor base with no less than 4 screws, and the motor base is generally also a separately formed part, which is fixedly connected to the round tube or plate-shaped arm by multiple screws and nuts. The protective cover is also generally fixed to the motor base or the arm by a relatively complex nested structure. Such a solution not only increases the takeoff weight of the aircraft, but also makes the assembly and disassembly complex and difficult.

[0003] Even when in some unmanned aerial vehicles, the motor is press-fitted into the motor base, the motor often only has an interference fit with the motor base, and the motor base is then locked and connected to the arm through screws or snap structures. Using screws often increases the weight of the aircraft and is complex to disassemble. And for the snap structure, in order to ensure the reliability of the locking force, a design that is easy to snap and difficult to disengage is adopted, resulting in difficult disassembly of the motor base, and violent disassembly is likely to damage the arm together. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, the present invention provides an installation structure for a power output component of a multi-axis unmanned aerial vehicle arm, which can improve the installation and disassembly efficiency of the motor, the motor base and the arm, and has a higher disassembly life.

[0005] An unmanned aerial vehicle with the above-mentioned installation structure for a power output component of a multi-axis unmanned aerial vehicle arm is also provided.

[0006] According to an embodiment of the first aspect of the present invention, the installation structure for a power output component of a multi-axis unmanned aerial vehicle arm includes:

[0007] An arm, on which an installation hole is provided;

[0008] A mounting seat, installed in the installation hole, the mounting seat is provided with an opening and an installation cavity communicating with the opening. The side wall of the mounting seat is provided with an elastic first elastic part, at least a part of the first elastic part is located in the installation hole, the first elastic part is located on the side wall corresponding to the installation cavity, and can elastically deform along the radial direction of the installation hole;

[0009] A power output member, having a mounting part and a power part for providing flight power, the mounting part is installed in the installation cavity, the power part is located outside the installation cavity, and the power output member is provided with a first pressing part on the outer peripheral surface of the mounting part. The first pressing part can press the first elastic part to expand outward along the radial direction of the installation hole, so that an interference fit is formed between the first pressing part, the first elastic part and the installation hole.

[0010] The installation structure of the multi-axis drone arm power output component according to the first aspect embodiment of the present invention has at least the following beneficial effects:

[0011] 1. The installation process of the drone arm power output component is as follows: First, insert the mounting seat into the mounting hole of the arm, and align the first elastic part on the mounting seat with the inner wall of the mounting hole. Secondly, insert the power output part into the mounting seat from the opening of the mounting seat. The first extrusion part of the power output part extrudes the first elastic part in the mounting seat, causing the mounting seat to expand radially along the mounting hole at the first elastic part. The outer peripheral wall of the first elastic part is squeezed against the inner peripheral wall of the mounting hole, and the inner peripheral wall of the first elastic part is squeezed against the outer peripheral wall of the first extrusion part, that is, the power output part, the mounting seat and the arm are press-fitted together. The assembly of the three is completed only by relying on the dimensional structures of the power output part, the mounting seat and the arm, and the installation efficiency is higher;

[0012] 2. When disassembly is required, only the power output part needs to be pulled out to separate the power output part, the mounting seat and the arm. The disassembly operation is simple and the disassembly efficiency is higher;

[0013] 3. During the disassembly process of the motor, the motor seat and the arm, there is no structure of hard interference between the three. It is not easy to wear due to the structural interference of any two parts. After disassembly, the wear of the parts is small, and the disassembly and installation can be repeated multiple times, improving the disassembly life of the parts.

[0014] According to some embodiments of the present invention, it further includes a rotor protection cover. The rotor protection cover includes a connected protection ring and a mounting ring. The protection ring is used to protect the rotor. The outer peripheral surface of the mounting seat is provided with an elastic second elastic part. After the power output part is installed, the second elastic part is located between the arm and the side of the mounting seat away from the power part. The mounting ring is sleeved on the outer peripheral surface of the mounting seat and is press-fitted with the second elastic part.

[0015] According to some embodiments of the present invention, after the power output part is installed, the side of the first elastic part away from the power part extends out of the mounting hole to form the second elastic part, and the side of the first extrusion part away from the power part extends out of the mounting hole to form a second extrusion part. The second extrusion part can squeeze the second elastic part to expand radially along the mounting ring, so that the second extrusion part, the second elastic part and the mounting ring are press-fitted together.

[0016] According to some embodiments of the present invention, a second extrusion portion is provided on the outer peripheral surface of the power output member. The second extrusion portion is located on the side of the first extrusion portion away from the power portion. The second elastic portion is located on the corresponding side wall of the installation cavity. After the power output member is installed, the second extrusion portion can extrude the second elastic portion to expand radially outward along the installation ring, so that an interference fit is formed between the second extrusion portion, the second elastic portion and the installation ring.

[0017] According to some embodiments of the present invention, it further includes a rotor protection cover. The rotor protection cover includes a connected protection ring and an installation ring. The protection ring is used to protect the rotor. After the power assembly is installed, the installation ring is sleeved on the outer peripheral surface of the installation seat on the side of the installation seat away from the power portion and is locked to the machine arm through a locking member.

[0018] According to some embodiments of the present invention, a first rotation limiting portion is provided at the top of the installation ring, and a second rotation limiting portion is provided on the outer peripheral surface of the installation seat. The first rotation limiting portion and the second rotation limiting portion are in limiting engagement to limit the rotation of the installation ring around the outer peripheral surface of the installation seat.

[0019] According to some embodiments of the present invention, the first elastic portion extends from the opening towards the bottom of the installation cavity.

[0020] According to some embodiments of the present invention, the installation seat is elastic. A through groove is provided on the installation seat and penetrates through the inner and outer side walls of the installation seat from the opening. The side wall of the installation seat forms a first elastic portion through the through groove.

[0021] According to some embodiments of the present invention, the number of the through grooves is two, and the two through grooves are arranged oppositely.

[0022] According to some embodiments of the present invention, the installation seat can have an inward contraction tendency through the first elastic portion to reduce the size of the installation seat in the radial direction along the installation hole, and at the installation position of the installation seat and the installation hole, the installation seat has an outward expansion tendency.

[0023] According to some embodiments of the present invention, a first limiting portion is provided on the inner peripheral wall of the installation hole, and a second limiting portion is provided on the outer peripheral surface of the installation seat. The first limiting portion and the second limiting portion are in limiting engagement to limit the axial movement or circumferential rotation of the installation seat along the installation hole.

[0024] According to some embodiments of the present invention, the installation hole is a non-circular hole.

[0025] According to some embodiments of the present invention, the machine arm is a plate-like structure.

[0026] The drone according to the embodiment of the second aspect of the present invention includes the installation structure of the multi-axis drone arm power output component according to the embodiment of the first aspect of the present invention.

[0027] The drone according to the embodiment of the second aspect of the present invention has at least the following beneficial effects: It can quickly assemble and disassemble the power output component, and the installation and disassembly efficiency is higher.

[0028] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the drawings and embodiments, where:

[0030] Figure 1 is an exploded schematic view of the installation structure of the multi-axis drone arm power output component according to an embodiment of the present invention installed on the drone;

[0031] Figure 2 is a schematic structural view of the mounting seat of the installation structure of the multi-axis drone arm power output component according to an embodiment of the present invention;

[0032] Figure 3 is a partial exploded schematic view of the installation structure of the multi-axis drone arm power output component according to an embodiment of the present invention installed on the drone;

[0033] Figure 4 is an overall schematic view of the drone with the installation structure of the multi-axis drone arm power output component according to an embodiment of the present invention.

[0034] Reference Numerals in the Drawings:

[0035] Arm 100; Mounting Hole 110; First Groove 111;

[0036] Mounting Seat 200; Opening 210; Mounting Cavity 220; First Elastic Portion 230; Second Rotation Limiting Portion 240; Through Slot 250; Second Limiting Portion 260; Upper Limiting Ring Block 261; Lower Limiting Ring Block 262; Accommodation Groove 263; First Projection 2631;

[0037] Power Output Member 300; Power Portion 310; Mounting Portion 320; First Extrusion Portion 330;

[0038] Rotor Protective Cover 400; Protective Ring 410; Mounting Ring 420; First Rotation Limiting Portion 421; Locking Member 430. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0040] In the description of the present invention, it should be understood that with respect to the orientation description, such as up, down, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as limiting the present invention.

[0041] In the description of the present invention, several means one or more, and a plurality means two or more. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence of the indicated technical features.

[0042] In the description of the present invention, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0043] Refer to Figures 1 to 4As shown in the figure, an installation structure for a power output component of a multi-axis drone arm 100 according to an embodiment of the first aspect of the present invention includes: a drone arm 100, a mounting base 200, and a power output member 300. The drone arm 100 serves as a support member for the power output component. The drone arm 100 is connected to the drone body. The drone arm 100 is provided with a mounting hole 110 for installing the power output component. The mounting base 200 is installed in the mounting hole 110, and the mounting base 200 is provided with an opening 210, and an installation cavity 220 is defined from the position of the opening 210. The mounting base 200 is provided with an elastic first elastic portion 230 on the side wall corresponding to the installation cavity 220. When the first elastic portion 230 undergoes elastic expansion, the diameter of the mounting base 200 at the position of the first elastic portion 230 can exceed the diameter of the mounting hole 110, but the position of the first elastic portion 230 is restricted by the size of the mounting hole 110 and can only expand outward to be the same as the size of the mounting hole 110. The excess size will be absorbed by the compression of the first elastic portion 230 under force. The power output member 300 has a power portion 310 and a mounting portion 320. The power portion 310 is used to provide flight power and is located outside the installation cavity 220. A first extrusion portion 330 is provided on the outer peripheral surface of the mounting portion 320 of the power output member 300. When the mounting portion 320 is installed in the installation cavity 220, the first extrusion portion 330 will extrude the first elastic portion 230. The first elastic portion 230 undergoes elastic expansion, and the first elastic portion 230 is compressed by the first extrusion portion 330 and the mounting hole 110. The outer peripheral wall of the first elastic portion 230 abuts against the inner peripheral wall of the mounting hole 110, and the inner peripheral wall of the first elastic portion 230 abuts against the outer peripheral wall of the first extrusion portion 330. The power output member 300, the mounting base 200, and the drone arm 100 are fixedly abutted against each other. Moreover, the pressure in the radial direction of the mounting hole 110 is positively correlated with the frictional force in the axial direction of the mounting hole 110. The greater the abutting pressure, the greater the frictional force. When the frictional force is greater than the overall gravity of the drone, the power output member 300 provides flight power through the power portion 310 located outside the installation cavity 220, thereby driving the drone to fly, and the power output member 300 is in a static stress balance state and will not separate from each other. The installation structure for the power output component of the multi-axis drone arm 100 in this embodiment can be quickly installed and disassembled, and the installation and disassembly efficiency is higher.

[0044] In this embodiment, the arm 100 is plate-shaped and serves as the basic fuselage of the drone. It is made of plastic parts, resulting in a lower cost and weight for the drone. There are no less than three sub-arms on the arm 100. At the end of each sub-arm away from the center of the arm 100, there are a number of mounting holes 110. Among them, the number of sub-arms is related to the number of rotors. When one sub-arm corresponds to one rotor, there is one mounting hole 110 on the sub-arm. When one sub-arm corresponds to multiple rotors, the number of mounting holes 110 on the sub-arm is the same as the number of corresponding rotors. For example, in a quadcopter drone, the number of sub-arms on the arm 100 is four, and there is one mounting hole 110 on each sub-arm. It should be understood that the arm 100 can also be a single arm. Only the power transmission component is installed through the mounting hole 110, and then connected to the drone body through other connection structures. Its shape can also be cylindrical or other shapes.

[0045] The mounting seat 200 is cylindrical, and the position of the barrel opening is the position of the opening 210. An installation cavity 220 is formed inside the barrel. The mounting seat 200 is provided with a first elastic part 230. The first elastic part 230 can change the size of the mounting seat 200 in the radial direction of the mounting hole 110 through elastic deformation, so that the overall size of the mounting seat 200 or the size at the position of the first elastic part 230 changes. When the mounting seat 200 is inserted into the mounting hole 110, at least part of the first elastic part 230 is located inside the mounting hole 110. The mounting seat 200 expands outward through the elastic deformation of the first elastic part 230, so that the outer peripheral wall of the mounting seat 200 abuts against the inner peripheral wall of the mounting hole 110, and there is a large pressure value between the two. It should be understood that the mounting seat 200 can also be ring-shaped, and the cross-section of the mounting seat 200 in the radial direction of the mounting hole 110 is adapted to the cross-section in the radial direction of the mounting hole 110.

[0046] The power output component 300 includes a motor and a rotor. A rotor is installed on the output shaft of the motor to form a power unit 310. The rotor is driven by the motor to rotate, and the rotor provides lift to drive the entire drone to fly. The motor body forms a mounting portion 320, and the mounting portion 320 is directly inserted into the mounting cavity 220 from the opening 210. The power unit 310 is located outside the mounting cavity 220 to allow the rotor to rotate smoothly. When the dimension of the motor in the radial direction of the mounting hole 110 is greater than the dimension of the first elastic portion 230 in the mounting cavity 220 in the radial direction of the mounting hole 110, the power output component 300 can directly use the outer peripheral wall of the motor as the first extrusion portion 330. The first extrusion portion 330 can directly extrude the first elastic portion 230 of the mounting seat 200, causing the dimension of the mounting seat 200 in the radial direction of the mounting hole 110 to deform and expand outward to abut against the inner peripheral wall of the mounting hole 110. At the same time, the outer peripheral wall of the power output component 300 also abuts against the inner peripheral wall of the mounting cavity 220 of the mounting seat 200. It should be understood that the power output component 300 can also form the first extrusion portion 330 by directly sleeving a protruding ring on the outer peripheral wall of the motor.

[0047] Specifically, the installation process of the power output assembly of the drone arm 100 is as follows: First, insert the mounting seat 200 into the mounting hole 110 of the arm 100, and align the first elastic portion 230 on the mounting seat 200 with the inner wall of the mounting hole 110. Second, insert the power output component 300 into the mounting seat 200 from the opening 210 of the mounting seat 200. The first extrusion portion 330 of the power output component 300 extrudes the first elastic portion 230 inside the mounting seat 200, causing the mounting seat 200 to expand radially outward at the first elastic portion 230. The outer peripheral wall of the first elastic portion 230 abuts against the inner peripheral wall of the mounting hole 110, and the inner peripheral wall of the first elastic portion 230 abuts against the outer peripheral wall of the first extrusion portion 330. That is, the power output component 300, the mounting seat 200, and the arm 100 are press-fitted together. The assembly of the three is completed only by relying on the dimensional structures of the power output component 300, the mounting seat 200, and the arm 100, and the installation efficiency is higher; when disassembly is required, only the power output component 300 needs to be pulled out to separate the power output component 300, the mounting seat 200, and the arm 100. The disassembly operation is simple and the disassembly efficiency is higher; during the disassembly process of the motor, the motor seat, and the arm 100, there is no structure of hard interference between the three, and it is not easy to wear due to the structural interference between any two parts. After disassembly, the wear of the parts is small, and disassembly and installation can be repeated multiple times, improving the disassembly life of the parts.

[0048] It should be understood that after the entire drone is manufactured, its weight is 30 g, and the acceleration due to gravity is taken as 10 m / s 2, the overall gravity of the drone is 0.3N. After the power output member 300, the mounting seat 200 and the arm 100 are installed, the total friction force between the power output member 300, the mounting seat 200 and the arm 100 is generally designed to be about 5N. 5N is equivalent to a person lifting an object weighing one catty, which can be easily achieved by the user. The installation and disassembly of the power output component by the user are less difficult and more efficient. And 5N is much greater than the overall gravity of the drone, which is 0.3N. When the drone is flying, the power output member 300, the mounting seat 200 and the arm 100 will not separate from each other, and the flight of the drone is sufficiently reliable. It should be understood that the friction force between the power output member 300, the mounting seat 200 and the arm 100 can also be adjusted according to actual usage requirements, as long as it is ensured that it is greater than the overall gravity of the drone and can support the flight of the drone without separating from each other.

[0049] Referring to Figure 1 and Figure 3 As shown, in some other embodiments of the present invention, it further includes a rotor protection cover 400. The rotor protection cover 400 includes a connected protection ring 410 and a mounting ring 420. The protection ring 410 is used to protect the rotor. An elastic second elastic portion is provided on the outer peripheral surface of the mounting seat 200. After the power output member 300 is installed, the second elastic portion is located between the arm 100 and the side of the mounting seat 200 away from the power portion 310. The mounting ring 420 is sleeved on the outer peripheral surface of the mounting seat 200 and is in interference fit with the second elastic portion.

[0050] It should be understood that the rotor protection cover 400 has various types, such as a semi-protection cover and a full-protection cover. The difference is that the outer shape structure of the protection ring 410 is different. The protection ring 410 of the full-protection cover is mostly a complete circle, and the protection ring 410 of the semi-protection cover is mostly an arc, such as a semi-circle. In this embodiment, a full-protection cover is used. There is a certain space between the protection ring 410 and the mounting ring 420 of the full-protection cover. This space forms an insertion port, through which the arm 100 can be inserted, and then the mounting ring 420 and the mounting seat 200 can be aligned for installation. In the related art, the rotor protection cover 400 is mostly fixed by a nested structure, and the nested structure often has problems such as difficult disassembly and reduced structural reliability after multiple uses.

[0051] It should be understood that in this embodiment, the second elastic part can be directly arranged on the outer peripheral surface of the mounting seat 200. When the mounting seat 200 is installed in the mounting hole 110, the second elastic part is located between the arm 100 and the side of the mounting seat 200 far from the opening 210. The mounting ring 420 is sleeved on the outer peripheral surface of the mounting seat 200 from the side of the mounting seat 200 far from the opening 210 and can be fixedly connected with the second elastic part by interference fit, so that the rotor protection cover 400 can be installed or disassembled separately after the power output part 300 is installed, without being installed or disassembled together with the power output part 300, and the installation efficiency of the rotor protection cover 400 is higher. Moreover, the sliding friction force between the mounting ring 420 and the mounting seat 200 is positively correlated with the clamping pressure between the mounting ring 420 and the mounting seat 200. The dimensions between the mounting ring 420 and the second elastic part can be designed according to actual needs, and the clamping pressure between the mounting ring 420 and the mounting seat 200 can be adjusted by the dimensions, so as to adjust the sliding friction force between the mounting ring 420 and the mounting seat 200, making the sliding friction force between the mounting ring 420 and the mounting seat 200 convenient for installation and disassembly while meeting the design requirements, and the installation and disassembly efficiency of the rotor protection cover 400 is higher, and the installation is simple and convenient.

[0052] Referring to Figure 1 With Figure 3 As shown, in some specific embodiments of the present invention, after the power output part 300 is installed, the side of the first elastic part 230 far from the power part 310 extends out of the mounting hole 110 to form the second elastic part, and the side of the first extrusion part 330 far from the power part 310 extends out of the mounting hole 110 to form the second extrusion part. The second extrusion part can extrude the second elastic part to expand radially along the mounting ring 420, so that the second extrusion part, the second elastic part and the mounting ring 420 are fixedly connected by interference fit.

[0053] It should be understood that the second elastic part directly extends from the side of the first elastic part 230 away from the opening 210. When the installation part 320 is inserted into the installation cavity 220, the second extrusion part will contact the first elastic part 230 before the first extrusion part 330, and pass through the first elastic part 230 to reach the position of the second elastic part. The second extrusion part extrudes the second elastic part, and the second elastic part expands elastically and is jointly extruded by the second extrusion part and the installation ring 420, so that an interference fit is formed between the second extrusion part, the second elastic part and the installation ring 420. At this time, an interference fit is formed between the first extrusion part 330, the first elastic part 230 and the installation hole 110. The rotor protection cover 400 is directly interference-fitted to the outer peripheral surface of the installation seat 200 through the cooperation of the power output part 300 and the installation seat 200, and the installation and disassembly efficiency of the rotor protection cover 400 is higher, and the installation is simple and convenient. By forming the second elastic part through the first elastic part 230 and forming the second elastic part through the first extrusion part 330, only the size of the first elastic part 230 needs to be extended during the manufacturing process, and there is no need to separately provide a new second elastic part on the installation seat 200. The manufacturing process of the installation seat 200 is simplified, the structure is simpler, and the manufacturing difficulty is lower.

[0054] In some specific embodiments of the present invention, a second extrusion part is provided on the outer peripheral surface of the power output part 300. The second extrusion part is located on the side of the first extrusion part 330 away from the power part 310. The second elastic part is located on the corresponding side wall of the installation cavity 220. After the power output part 300 is installed, the second extrusion part can extrude the second elastic part to expand radially along the installation ring 420, so that an interference fit is formed between the second extrusion part, the second elastic part and the installation ring 420.

[0055] It should be understood that the dimension of the second extrusion part along the radial direction of the installation hole 110 is smaller than the dimension of the first extrusion part 330 along the radial direction of the installation hole 110, so that the second extrusion part can smoothly pass through the first elastic part 230. The dimension of the second elastic part along the radial direction of the installation hole 110 is less than or equal to the dimension of the first elastic part 230 along the radial direction of the installation hole 110 and corresponds to the dimension of the second extrusion part. After the second extrusion part passes through the first elastic part 230, the second extrusion part can extrude the second elastic part to expand elastically, and the second elastic part is jointly extruded by the second extrusion part and the installation ring 420, so that an interference fit is formed between the second extrusion part, the second elastic part and the installation ring 420. At this time, an interference fit is formed between the first extrusion part 330, the first elastic part 230 and the installation hole 110. The rotor protection cover 400 is directly interference-fitted to the outer peripheral surface of the installation seat 200 through the cooperation of the power output part 300 and the installation seat 200, and the installation and disassembly efficiency of the rotor protection cover 400 is higher, and the installation is simple and convenient.

[0056] Refer to Figure 1 And Figure 3As shown, in some other embodiments of the present invention, it further includes a rotor protection cover 400. The rotor protection cover 400 includes a connected protection ring 410 and a mounting ring 420. The protection ring 410 is used to protect the rotor. After the power assembly is installed, the mounting ring 420 is sleeved on the outer peripheral surface of the mounting seat 200 on the side away from the power part 310, and is locked to the arm 100 through a locking member 430.

[0057] It should be understood that the rotor protection cover 400 can also be locked and fixed through a separate locking member 430, such as a screw, after being sleeved on the mounting ring 420. The installation and disassembly efficiency of the rotor protection cover 400 is relatively high.

[0058] In this embodiment, the rotor protection cover 400 is provided with a threaded hole on one side of the mounting ring 420, and a through hole corresponding to the threaded hole is provided near the mounting hole 110 of the arm 100. The screw can pass through the through hole and be locked and connected to the threaded hole.

[0059] Refer to Figure 1 、 Figure 2 And Figure 3 As shown, in some other embodiments of the present invention, the top of the mounting ring 420 is provided with a first rotation limiting portion 421, and the outer peripheral surface of the mounting seat 200 is provided with a second rotation limiting portion 240. The first rotation limiting portion 421 and the second rotation limiting portion 240 are limit-connected to limit the rotation of the mounting ring 420 around the outer peripheral surface of the mounting seat 200.

[0060] It should be understood that the rotation of the mounting ring 420 is restricted by the first rotation limiting portion 421 and the second rotation limiting portion 240. At the same time, after the first rotation limiting portion 421 and the second rotation limiting portion 240 are aligned, the threaded hole and the through hole can be directly aligned, playing a positioning role and facilitating installation.

[0061] In this embodiment, the first rotation limiting portion 421 is two-segment arc-shaped grooves, and the second rotation limiting portion 240 is two-segment arc-shaped protrusions. The positions of the arc-shaped grooves and the arc-shaped protrusions correspond to each other and can be mutually clamped. It should be understood that the number of arc-shaped grooves can also be one or three or more, and the number of arc-shaped protrusions corresponds to the number of arc-shaped grooves, and their positions also correspond to each other, and they can be mutually clamped and limited.

[0062] Refer to Figure 1 、 Figure 2 And Figure 3 As shown, in some other embodiments of the present invention, the first elastic portion 230 extends from the opening 210 toward the bottom of the installation cavity 220.

[0063] It should be understood that when the power output member 300 is installed at the opening 210, it squeezes the first elastic part 230, causing the first elastic part 230 to expand elastically until the power output member 300 moves into the mounting hole 110 and squeezes the first elastic part 230 together with the mounting hole 110 to achieve interference installation.

[0064] As another embodiment, the first elastic part 230 can also be directly arranged on the side wall between the opening 210 and the bottom of the installation cavity 220. At this time, the first elastic part 230 extends into the installation cavity 220 for the first pressing part 330 of the power output member 300 to press. The first elastic part 230 can be arranged along the axial direction of the installation cavity 220 or along the circumferential direction of the installation cavity 220. When the first elastic part 230 is arranged along the circumferential direction of the installation cavity 220, the first elastic part 230 can be in the shape of several arcs. The first elastic part 230 is specifically an elastic convex block, and the edge of the elastic convex block has a smooth transition, which is convenient for the power output member 300 to be directly clamped with the elastic convex block. The area near the elastic convex block on the mounting seat 200 is also elastic. When the power output member 300 presses the elastic convex block, the elasticity of the area near the elastic convex block enables the elastic convex block to expand outward along the radial direction of the mounting hole 110.

[0065] Refer to Figure 1 、 Figure 2 and Figure 3 As shown, in some other embodiments of the present invention, the mounting seat 200 is elastic, and a through groove 250 is provided on the mounting seat 200 that penetrates the inner and outer side walls of the mounting seat 200 from the opening 210. The side wall of the mounting seat 200 forms the first elastic part 230 through the through groove 250.

[0066] It should be understood that the through groove 250 provides a deformation space for the elastic mounting seat 200, enabling the side wall of the mounting seat 200 to elastically deform through the through groove 250. At this time, the body of the mounting seat 200 forms the first elastic part 230, and the first elastic part 230 can expand elastically. When the first elastic part 230 is directly formed on the body of the mounting seat 200, the outer peripheral surface of the power output member 300 directly forms the first pressing part 330. The power output member 300 and the mounting seat 200 are in mutual contact through surface contact. During interference clamping, the contact area between the power output member 300 and the mounting seat 200 is large, and the contact area between the mounting seat 200 and the inner peripheral wall of the mounting hole 110 is large, which is not easy to cause local pressure bearing, is beneficial to the long-term use of the mounting seat 200, and is not easy to be damaged due to excessive local pressure bearing.

[0067] In this embodiment, the number of through grooves 250 is two, and the two through grooves 250 are arranged oppositely. The number of the first elastic parts 230 is also two, and the two first elastic parts 230 are also arranged oppositely.

[0068] Refer to Figure 1 、Figure 2 As shown in Figure 3 Figure 2 and Figure 3 , in some other embodiments of the present invention, the mounting seat 200 can have a tendency to contract inward through the first elastic portion 230 to reduce the size of the mounting seat 200 in the radial direction of the mounting hole 110. When the mounting seat 200 is mounted in the mounting hole 110, the mounting seat 200 has a tendency to expand outward.

[0069] It is understood that when the size of the outer peripheral wall of the mounting seat 200 in the radial direction of the mounting hole 110 is greater than the size of the inner peripheral wall of the mounting hole 110 in the radial direction of the mounting hole 110, the size of the mounting seat 200 in the radial direction of the mounting hole 110 can be contracted from the opening 210 to the bottom of the mounting cavity 220 along the direction of the first elastic portion 230, so that the mounting seat 200 can be inserted into the mounting hole 110 at the position of the opening 210. The opening 210 of the mounting seat 200 can extend out of the mounting hole 110 for a certain distance. Then, the mounting portion 320 of the power output member 300 is mounted in the mounting cavity 220 from the opening 210 position of the mounting seat 200, and in the mounting hole 110, together with the mounting hole 110, the first elastic portion 230 is squeezed to realize the interference abutment of the first pressing portion 330, the first elastic portion 230 and the mounting hole 110.

[0070] Referring to Figure 1 and Figure 2 As shown in Figure 3 Figure 1 and Figure 3 , in some other embodiments of the present invention, a first limiting portion is provided on the inner peripheral wall of the mounting hole 110, and a second limiting portion 260 is provided on the outer peripheral surface of the mounting seat 200. The first limiting portion and the second limiting portion 260 are engaged in a limiting manner to limit the axial movement or circumferential rotation of the mounting seat 200 along the mounting hole 110.

[0071] It is understood that the position of the mounting seat 200 mounted in the mounting hole 110 is limited by the first limiting portion and the second limiting portion 260, so that the mounting seat 200 can be directly limited and fixed when mounted in the mounting hole 110, which is convenient for mounting the power output member 300 in the mounting cavity 220 of the mounting seat 200.

[0072] In this embodiment, the first limiting portion and the second limiting portion 260 limit the axial movement of the mounting seat 200 along the mounting hole 110. The machine arm 100 has a thin plate-like structure. The inner peripheral wall of the mounting hole 110 directly forms the first limiting portion, and the outer peripheral surface of the mounting seat 200 is provided with the second limiting portion 260. The second limiting portion 260 includes an upper limiting ring block 261 and a lower limiting ring block 262. An annular accommodating groove 263 is formed between the upper limiting ring block 261 and the lower limiting ring block 262. The accommodating groove 263 can be directly stuck in the mounting hole 110. The axial movement of the mounting seat 200 along the mounting hole 110 is restricted by the upper limiting ring block 261 and the lower limiting slider. Before the power output member 300 is installed, pre-limiting of the mounting seat 200 is performed, and the installation of the mounting seat 200 is more convenient. Among them, because the dimension of the upper limiting ring block 261 along the radial direction of the mounting hole 110 is greater than the radial dimension of the mounting hole 110, during the process of clamping the mounting seat 200 to the mounting hole 110, through the first elastic portion 230, the upper limiting ring block 261 of the mounting seat 200 is contracted, so that the dimension of the upper limiting slider is reduced to be able to pass through the mounting hole 110. It should be understood that when the machine arm 100 is not a thin plate-like structure but a relatively thick plate-like structure, resulting in a relatively large dimension of the mounting hole 110 along the axial direction, a first limiting portion can be provided on the inner peripheral wall of the mounting hole 110, and the first limiting portion is an annular protrusion. It should be understood that the first limiting portion can also be an annular groove, and the second limiting portion 260 is an annular protrusion.

[0073] In this embodiment, the first limiting portion and the second limiting portion 260 limit the circumferential rotation of the mounting seat 200 along the mounting hole 110. A first groove 111 is provided on the inner peripheral wall of the mounting hole 110 along the axial direction of the mounting hole 110. The first groove 111 forms the first limiting portion, and a first protrusion 2631 is provided on the outer peripheral surface of the mounting seat 200 along the axial direction of the mounting hole 110. The first protrusion 2631 forms the second limiting portion 260. The first protrusion 2631 is clamped in the first groove 111 to limit the circumferential rotation of the mounting seat 200 along the mounting hole 110. Among them, the first limiting portion can also be the first groove 111, and the second limiting portion 260 is the first protrusion 2631 corresponding to the first groove 111. It should be understood that the first protrusion 2631 can also be directly provided in the accommodating groove 263. When the accommodating groove 263 is clamped in the mounting hole 110, both the axial movement and the circumferential rotation of the mounting seat 200 are restricted.

[0074] Refer to Figure 1 And Figure 3 As shown, in some other embodiments of the present invention, the mounting hole 110 is a non-circular hole.

[0075] It is worth understanding that when the mounting hole 110 is a non-circular hole and the shape of the mounting seat 200 corresponds to that of the mounting hole 110, the circumferential rotation of the mounting seat 200 is directly restricted.

[0076] In this embodiment, the mounting hole 110 is a circle with one corner cut off by a straight line. The area corresponding to the corner cut off by the straight line is the clamping area. The clamping area corresponds to the position of the through groove 250. The through groove 250 of the mounting base 200 can be clamped in the clamping area, thereby restricting the circumferential rotation of the mounting base 200.

[0077] Referring to Figure 1 With Figure 4 As shown, the second aspect embodiment of the present invention provides a drone, including the power output component mounting structure of the multi-axis drone arm 100 in the first aspect embodiment of the present invention. The drone with this structure can quickly assemble and disassemble the power output component, and the installation and disassembly efficiency is higher. Moreover, the simple disassembly method of the drone can be used in the teaching field to assist students in understanding the drone, and students can also directly manually assemble and disassemble it to exercise their hands-on ability. The other structures of the drone are known to those skilled in the art and will not be elaborated here.

[0078] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. An installation structure for a multi-axis drone arm power output component, characterized in that Including: An arm, on which mounting holes are provided; A mounting seat, installed in the mounting hole. The mounting seat is provided with an opening and a mounting cavity communicating with the opening. The side wall of the mounting seat is provided with an elastic first elastic part. The first elastic part is at least partially located in the mounting hole. The first elastic part is on the side wall corresponding to the mounting cavity and can elastically deform along the radial direction of the mounting hole; A power output member, having a mounting part and a power part for providing flight power. The mounting part is installed in the mounting cavity, and the power part is located outside the mounting cavity. The power output member is provided with a first pressing part on the outer peripheral surface of the mounting part. The first pressing part can press the first elastic part to expand outward along the radial direction of the mounting hole, so that an interference fit is formed between the first pressing part, the first elastic part and the mounting hole; A rotor protection cover, which includes a connected protection ring and a mounting ring. The protection ring is used to protect the rotor. The outer peripheral surface of the mounting seat is provided with an elastic second elastic part. After the power output member is installed, the second elastic part is located between the arm and the side of the mounting seat away from the power part. The mounting ring is sleeved on the outer peripheral surface of the mounting seat and is in interference fit with the second elastic part; After the power output member is installed, the side of the first elastic part away from the power part extends out of the mounting hole to form the second elastic part. The side of the first pressing part away from the power part extends out of the mounting hole to form a second pressing part. The second pressing part can press the second elastic part to expand outward along the radial direction of the mounting ring, so that an interference fit is formed between the second pressing part, the second elastic part and the mounting ring.

2. The installation structure of the multi-axis drone arm power output assembly according to claim 1, wherein: The outer peripheral surface of the power output member is provided with a second pressing part. The second pressing part is located on the side of the first pressing part away from the power part. The second elastic part is on the side wall corresponding to the mounting cavity. After the power output member is installed, the second pressing part can press the second elastic part to expand outward along the radial direction of the mounting ring, so that an interference fit is formed between the second pressing part, the second elastic part and the mounting ring.

3. The installation structure of the multi-axis drone arm power output component according to claim 1, wherein: It also includes a rotor protection cover, which includes a connected protection ring and a mounting ring. The protection ring is used to protect the rotor. After the power assembly is installed, the mounting ring is sleeved on the outer peripheral surface of the mounting seat on the side of the mounting seat away from the power part and is locked on the arm through a locking member.

4. The installation structure of the multi-axis drone arm power output component according to any one of claims 1 to 3, characterized in that: The top of the mounting ring is provided with a first rotation limiting part, and the outer peripheral surface of the mounting seat is provided with a second rotation limiting part. The first rotation limiting part and the second rotation limiting part are in limiting engagement to limit the rotation of the mounting ring around the outer peripheral surface of the mounting seat.

5. The installation structure of the multi-axis drone arm power output component according to any one of claims 1 to 3, characterized in that: The first elastic part extends from the opening towards the bottom of the mounting cavity.

6. The installation structure of the multi-axis drone arm power output component according to claim 5, characterized in that: The mounting seat can have an inward shrinking tendency through the first elastic part to reduce the size of the mounting seat along the radial direction of the mounting hole. When the mounting seat is installed in the mounting hole, the mounting seat has an outward expanding tendency through the first elastic part.

7. The installation structure of the multi-axis drone arm power output component according to claim 6, characterized in that: A first limiting portion is provided on the inner peripheral wall of the mounting hole, and a second limiting portion is provided on the outer peripheral wall of the mounting seat. The first limiting portion and the second limiting portion are in limiting engagement to limit the axial movement or circumferential rotation of the mounting seat along the mounting hole.

8. A drone, characterized in that, It includes the installation structure of the multi-axis drone arm power output assembly according to any one of claims 1 to 7.

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