Unmanned aerial vehicle rotor device and unmanned aerial vehicle

Abstract

The invention relates to the technical field of unmanned aerial vehicles, and discloses an unmanned aerial vehicle rotor device which comprises an arm assembly, a motor assembly, a damping assembly, a folding paddle assembly and a folding paddle limiting assembly, when an unmanned aerial vehicle needs to work, folding paddles in the folding paddle assembly are unfolded in parallel, and the folding paddle limiting assembly is fixed to paddle pressing pieces through a quick release mechanism in a matched mode; the folding blades are clamped between the limiting blocks, and the parallel unfolding state of the folding blades is fixedly kept. At the moment, when the motor assembly is started to output power torque, the folding blades cannot deviate due to uneven stress, and large vibration cannot be generated and transmitted to the unmanned aerial vehicle body and application equipment. And meanwhile, the damping assembly is in a working state, the damping rubber sleeve obstructs and filters vibration generated by rotation of the motor assembly and the folding paddle assembly, and the vibration is effectively prevented from being transmitted to an unmanned aerial vehicle body and application equipment. The invention further provides the unmanned aerial vehicle comprising the rotor wing device.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles, and in particular to a rotor device of an unmanned aerial vehicle and an unmanned aerial vehicle. Background Art

[0002] In recent years, with the rapid development of drone technology, multi-rotor drones have the advantages of being agile and light, able to hover, and able to take off and land at any location. They are widely used in application fields such as power line inspection, traffic monitoring, land surveying and mapping, ocean and water conservancy monitoring, etc.

[0003] As the application scenarios become more and more extensive, the weight requirements of drones are also increasing. The size requirements of the propeller blades of such drones are getting larger and larger, which brings troubles to transportation and storage. Therefore, the application of foldable propeller blades can greatly reduce the overall size of the body and facilitate storage and transportation.

[0004] Existing folding blades are usually directly fixed and rigidly connected to the motor power assembly. The imbalance and rotational vibration of the folding blades are directly transmitted to the fuselage shell and mounted equipment, seriously affecting the measurement and judgment of precision sensors such as inertial navigation and accelerometers, resulting in reduced aircraft flight performance and erroneous measurement data of mounted equipment.

[0005] At present, the folding blades are rotatably connected to the blade fixing seat, and folding is achieved by rotating the folding blades. However, after the folding blades are unfolded, when the rotor rotates during flight, the motor outputs torque, and the folding blades are easily subjected to uneven force and shifted, causing the folding blades to be unbalanced and generate large vibrations that are transmitted to the drone body and application equipment. Summary of the invention

[0006] The purpose of the present invention is to provide a UAV rotor device and a UAV with reduced vibration and good stability.

[0007] In order to achieve the above-mentioned purpose, the present invention provides a UAV rotor device, including a folding blade assembly and a folding blade limit assembly, the folding blade assembly includes a folding blade and a blade mounting mechanism, the folding blade is rotatably connected to the blade mounting mechanism, the folding blade limit assembly includes a blade limiter, the blade limiter is detachably connected to the blade mounting mechanism, the blade limiter is provided with a limit mechanism, the limit mechanism includes at least two limit blocks, and the limit blocks are distributed on both sides of the folding blade.

[0008] As a preferred solution, the folding paddle limiting assembly further includes a quick release mechanism, and the paddle limiting member is connected to the paddle mounting mechanism via the quick release mechanism.

[0009] As a preferred solution, the quick release mechanism includes a quick release knob, a quick release return spring and a quick release positioning pin, the quick release knob includes a knob shaft and a knob head connected to each other, the knob shaft is provided with a pin hole, the quick release positioning pin passes through the pin hole, so that the quick release positioning pin is perpendicular to the knob shaft;

[0010] The blade stopper is provided with a first connecting hole, the knob shaft passes through the first connecting hole, so that the knob head and the quick-release positioning pin are located on both sides of the blade stopper, the quick-release reset spring is sleeved outside the knob shaft and located in the first connecting hole, and the quick-release reset spring is located between the knob head and the quick-release positioning pin;

[0011] The mounting structure is provided with a second connecting hole extending therethrough, and the blade mounting mechanism is provided with two slots communicating with the second connecting hole on a side away from the blade stopper, and the two slots are located in the same straight line;

[0012] When the blade stopper is connected to the blade mounting mechanism, the knob shaft and the quick-release positioning pin pass through the second connecting hole, and the knob shaft can rotate so that the two ends of the quick-release positioning pin can be inserted into the two slots.

[0013] As a preferred embodiment, the quick-release mechanism also includes a positioning member, which is a cylinder, and is coaxially arranged with the first connecting hole. The positioning member and the quick-release positioning pin are located on the same side of the blade limiter, one end of the positioning member is connected to the blade limiter, and the other end of the positioning member is provided with four positioning notches, and the four positioning notches are spaced 90° apart from each other.

[0014] As a preferred embodiment, the blade mounting mechanism includes a blade fixing seat, a blade pressing plate and a fastening bolt, the blade fixing seat is provided with a mounting column, the end of the folding blade is provided with a first mounting hole, the folding blade is sleeved on the mounting column through the first mounting hole, the mounting column is provided with a second mounting hole, the blade pressing plate is provided with a third mounting hole, the fastening bolt passes through the third mounting hole and is threadedly connected to the second mounting hole, so that the head of the folding blade is located between the blade and the blade fixing seat, and the second connecting hole and the card slot are provided on the blade pressing plate.

[0015] As a preferred solution, it also includes an arm assembly, a motor assembly and a shock absorbing assembly, the arm assembly includes an arm fixing seat and an arm connecting pipe connected to each other, the arm connecting pipe is used to connect to the UAV fuselage, the motor assembly is flexibly connected to the arm fixing seat through the shock absorbing assembly, and the motor assembly is connected to the blade mounting mechanism to drive the folding blade assembly to rotate.

[0016] As a preferred embodiment, the motor assembly includes a motor, the shock absorbing assembly includes a shock absorbing fixing seat and a shock absorbing rubber sleeve, the arm fixing seat is provided with a accommodating cavity with an opening, the shock absorbing fixing seat is located in the accommodating cavity, the shock absorbing fixing seat is connected to the motor through the opening, and the shock absorbing rubber sleeve is arranged between the shock absorbing fixing seat and the cavity wall of the accommodating cavity where the opening is arranged.

[0017] As a preferred embodiment, the shock absorbing assembly also includes an adjusting bolt, a rubber sleeve mounting hole is provided on the shock absorbing fixing seat, the shock absorbing rubber sleeve has rubber holes running through both ends thereof, the shock absorbing rubber sleeve includes a first rubber part, a second rubber part and a third rubber part connected in sequence, the diameters of the first rubber part and the third rubber part are larger than the diameter of the second rubber part, the shock absorbing rubber sleeve passes through the rubber sleeve mounting hole so that the second rubber part is located in the rubber sleeve mounting hole, the first rubber part and the third rubber part are located on both sides of the shock absorbing fixing seat, the adjusting bolt passes through the rubber hole and is connected to the machine arm fixing seat, the first rubber part is located between the shock absorbing fixing seat and the machine arm fixing seat, and the third rubber part is located between the shock absorbing fixing seat and the bolt head of the adjusting bolt.

[0018] As a preferred solution, the shock absorbing assembly further includes a rubber sleeve gasket, which is sleeved outside the adjusting bolt and located between the bolt head of the adjusting bolt and the third rubber portion, and the diameter of the rubber sleeve gasket is greater than the diameter of the third rubber portion.

[0019] The present invention also provides a UAV, comprising: a UAV fuselage and the UAV rotor device mentioned above.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention sets a folding propeller limit assembly, and the blade limiter of the folding propeller limit assembly is set with a limit block. When the folding propeller is unfolded, the folding propeller limit assembly is installed on the folding propeller limit assembly, so that the folding propeller is stuck between two or more limit blocks, thereby limiting the folding propeller from continuing to rotate, preventing the folding propeller from deflecting during operation, solving the problem of blade imbalance, and reducing vibration, improving the power efficiency and stability of the folding propeller, and improving the output response of the power assembly. In addition, the motor of the present invention is connected to the machine arm assembly through a shock-absorbing fixing seat, and the shock-absorbing fixing seat is flexibly connected to the machine arm assembly, which effectively blocks and filters the vibration noise generated by the power assembly, greatly improving the stability of the aircraft flight state. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of a UAV rotor device according to an embodiment of the present invention.

[0023] Figure 21. The diagram of the rotor blades of the UAV rotor device according to an embodiment of the present invention in the folded and stored state.

[0024] Figure 3 1 is an exploded view of the unmanned aerial vehicle rotor device according to an embodiment of the present invention.

[0025] Figure 4 It is an exploded view of the folding blade assembly and the folding paddle limiting assembly according to an embodiment of the present invention.

[0026] Figure 5 It is an assembly cross-sectional view of a folding blade assembly and a folding paddle limiting assembly according to an embodiment of the present invention.

[0027] Figure 6 It is a side view of the installation state of the blade fixing seat and the folding paddle limiting assembly according to an embodiment of the present invention.

[0028] Figure 7 It is a top view of the installation state of the blade fixing seat and the folding paddle limiting assembly according to an embodiment of the present invention.

[0029] Figure 8 It is a side view of the paddle fixing seat and the folding paddle limiting assembly in a disassembled state according to an embodiment of the present invention.

[0030] Fig. 9 It is a top view of the paddle fixing seat and the folding paddle limiting assembly in the disassembled state according to an embodiment of the present invention.

[0031] Fig.10 2 is a cross-sectional view of a UAV rotor device according to an embodiment of the present invention.

[0032] Fig.11 yes Fig.10 Enlarged view of point A.

[0033] In the figure, 100-folding blade assembly; 110-folding blade; 111-first mounting hole; 120-blade fixing seat; 121-mounting column; 122-second mounting hole; 130-blade pressing sheet; 131-second connecting hole; 1311-shaft through portion; 1312-pin through portion; 132-positioning hole; 133-slot; 134-third mounting hole; 140-fastening bolt; 150-wear-resistant gasket;

[0034] 200-folding paddle limit assembly; 210-blade limiter; 211-first connecting hole; 212-positioning block; 220-limiting block; 230-quick release knob; 231-knob shaft; 232-knob head; 233-pin hole; 240-quick release return spring; 250-quick release positioning pin; 260-positioning member; 261-positioning notch; 270-pin set screw;

[0035] 300-machine arm assembly; 310-machine arm fixing seat; 311-accommodating cavity; 312-opening; 320-machine arm connecting pipe; 330-locking bolt;

[0036] 400-motor assembly; 410-motor; 420-propeller adapter;

[0037] 500- shock-absorbing assembly; 510- shock-absorbing fixing seat; 520- shock-absorbing rubber sleeve; 521- first rubber part; 522- second rubber part; 523- third rubber part; 530- adjusting bolt; 540- rubber sleeve gasket. DETAILED DESCRIPTION

[0038] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0042] Embodiment 1

[0043] like Figures 1 to 11As shown, a UAV rotor device of a preferred embodiment of the present invention includes a folding blade assembly 100 and a folding paddle limiting assembly 200, wherein the folding blade assembly 100 includes a folding blade 110 and a blade mounting mechanism, wherein the folding blade 110 is rotatably connected to the blade mounting mechanism, and the folding paddle limiting assembly 200 includes a blade limiting member 210, wherein the blade limiting member 210 is detachably connected to the blade mounting mechanism, and the blade limiting member 210 is provided with a limiting mechanism, wherein the limiting mechanism includes at least two limiting blocks 220, and the limiting blocks 220 are distributed on both sides of the folding blade 110. In this embodiment, a folding paddle limit assembly 200 is provided, and a blade limiter 210 of the folding paddle limit assembly 200 is provided with a limit block 220. When the folding paddle 110 is unfolded into place, the folding paddle limit assembly 200 is installed on the folding paddle assembly 100, so that the folding paddle 110 is stuck between two or more limit blocks 220, thereby limiting the folding paddle 110 from continuing to rotate, preventing the folding paddle 110 from deviating during operation, solving the problem of blade imbalance, reducing vibration, improving the power efficiency and stability of the folding paddle, and improving the output response of the power assembly.

[0044] Optionally, the folding paddle stop assembly 200 of this embodiment further includes a quick release mechanism, and the paddle stop member 210 is connected to the paddle installation mechanism via the quick release mechanism. The quick release mechanism is used for easier installation and removal.

[0045] Embodiment 2

[0046] The difference between this embodiment and the first embodiment is that, based on the first embodiment, this embodiment further illustrates the folding blade assembly and the folding paddle limiting assembly 200.

[0047] In this embodiment, the quick release mechanism includes a quick release knob 230, a quick release return spring 240 and a quick release positioning pin 250. The quick release knob 230 includes a knob shaft 231 and a knob head 232 connected to each other. The knob shaft 231 is provided with a pin hole 233. The quick release positioning pin 250 passes through the pin hole 233, so that the quick release positioning pin 250 is perpendicular to the knob shaft 231.

[0048] A first connecting hole 211 is provided on the blade stopper 210, and the knob shaft 231 passes through the first connecting hole 211, so that the knob head 232 and the quick release positioning pin 250 are located on both sides of the blade stopper 210, and the quick release return spring 240 is sleeved outside the knob shaft 231 and located in the first connecting hole 211, and the quick release return spring 240 is located between the knob head 232 and the quick release positioning pin 250;

[0049] The mounting structure is provided with a second connecting hole 131 that penetrates therethrough, and two slots 133 that are in communication with the second connecting hole 131 are provided on one side of the blade mounting mechanism away from the blade stopper 210, and the two slots 133 are located in the same straight line;

[0050] When blade stopper 210 is connected to the blade mounting mechanism, knob shaft 231 and quick-release positioning pin 250 pass through second connecting hole 131 , and knob shaft 231 can rotate so that both ends of quick-release positioning pin 250 can be inserted into two slots 133 .

[0051] like Figure 7 and Fig. 9 As shown, in this embodiment, locking, unlocking and screwing direction marks are also set on the top surface of quick release knob 230, and triangular arrow indication marks are set on both sides of the top surface of blade limiter 210. After quick release knob 230 is inserted into second connection hole 131, quick release knob 230 is pressed, quick release reset spring 240 is compressed to the bottom position, and the locking mark is screwed to the position indicated by the triangular arrow of blade limiter 210 according to the screwing direction on quick release knob 230. At this time, quick release reset spring 240 automatically returns to the top of quick release knob 230, so that quick release positioning pin 250 on quick release knob 230 is embedded in slot 133, and the installation of folding paddle limiter assembly 200 is completed.

[0052] Similarly, when it is necessary to disassemble the folding paddle limit assembly 200, press the quick release knob 230, the quick release return spring 240 is compressed to the bottom position, and the unlocking mark is screwed to the position indicated by the triangular arrow of the blade limiter 210 according to the screwing direction on the quick release knob 230. At this time, the quick release return spring 240 automatically returns to the top and drives the quick release knob 230 to disengage from the blade mounting mechanism of the folding paddle limit assembly 100, thereby completing the disassembly of the folding paddle limit assembly 200.

[0053] Figure 2 This is a diagram of the propeller blades in the folded and stored state. When the folding propeller limit assembly 200 is disassembled and removed, the folding blades 110 can be folded and stored in the parallel unfolded state, which greatly reduces the storage space of the power assembly and facilitates the storage and transportation of the entire drone.

[0054] Therefore, the folding blade limiting assembly 200 is used to limit and fix the folding blade assembly 100 when the folding blade 110 is unfolded, which can reduce the vibration of the folding blade 110 during rotation.

[0055] In addition, the quick release mechanism of the present embodiment further includes a positioning member 260, which is a cylinder. The positioning member 260 is coaxially arranged with the first connecting hole 211. The positioning member 260 and the quick release positioning pin 250 are located on the same side of the blade limiter 210. One end of the positioning member 260 is connected to the blade limiter 210, and the other end of the positioning member 260 is provided with four positioning notches 261, and the four positioning notches 261 are spaced 90° apart from each other. The two opposite positioning notches 261 are respectively used to snap into the two ends of the quick release positioning pin 250. The two pairs of positioning notches 261 are respectively used for positioning during installation and disassembly of the folding paddle limiter assembly 200 and the folding paddle blade assembly 100. The positioning notches 261 are used to facilitate the quick rotation of the quick release knob 230 into place during installation and disassembly. In the present embodiment, the positioning member 260 is actually integrated with the blade limiter 210.

[0056] In addition, two positioning blocks 212 are provided on the blade stopper 210, and the positioning blocks 212 and the quick-release positioning pin 250 are located on the same side of the blade stopper 210, and the first connecting hole 211 is located between the two positioning blocks 212. The blade mounting mechanism is provided with a positioning hole 132 for the positioning blocks 212 to be inserted. When the folding paddle stopper assembly 200 and the folding paddle assembly 100 are installed, the positioning blocks 212 are inserted into the positioning holes 132 for positioning and installing the folding paddle stopper assembly 200.

[0057] In addition, the second connection hole 131 includes a shaft through portion 1311 and two pin through portions 1312 that communicate with each other. The two pin through portions 1312 are located on both sides of the shaft through portion 1311. The diameter of the shaft through portion 1311 is smaller than the length of the quick-release positioning pin 250. The sum of the lengths of the shaft through portion 1311 and the two pin through portions 1312 is greater than or equal to the length of the quick-release positioning pin 250. During installation, the shaft through portion 1311 allows the knob shaft 231 to pass through, and the pin through portion 1312 allows the quick-release positioning pin 250 to pass through, thereby ensuring the direction of the quick-release positioning pin 250 when the folding paddle limit assembly 200 is installed, so as to facilitate the subsequent rotation of the quick-release knob 230.

[0058] The quick release mechanism of this embodiment further includes a pin set screw 270, a set hole communicating with the pin hole 233 is provided on the bottom surface of the knob shaft 231, a set groove is provided on the quick release positioning pin 250, and the set groove is a flat groove. The pin set screw 270 passes through the set hole and is inserted into the set groove, and the pin set screw 270 is threadedly connected to the set hole. The pin set screw 270 is used to fix the end face of the quick release positioning pin 250 to avoid the problem of the quick release positioning pin 250 vibrating and slipping.

[0059] Optionally, in this embodiment, the blade mounting mechanism includes a blade fixing seat 120, a blade pressing plate 130 and a fastening bolt 140, the blade fixing seat 120 is provided with a mounting column 121, the end of the folding blade 110 is provided with a first mounting hole 111, the folding blade 110 is sleeved on the mounting column 121 through the first mounting hole 111, the mounting column 121 is provided with a second mounting hole 122, the blade pressing plate 130 is provided with a third mounting hole 134, the fastening bolt 140 passes through the third mounting hole 134 and is threadedly connected to the second mounting hole 122, so that the head of the folding blade 110 is located between the blade and the blade fixing seat 120, and the second connecting hole 131, the slot 133 and the positioning hole 132 are provided on the blade pressing plate 130. In addition, the blade installation mechanism also includes a wear-resistant gasket 150, and wear-resistant gaskets 150 are provided between the bolt head of the fastening bolt 140 and the blade pressing plate 130, and between the blade pressing plate 130 and the blade fixing seat 120. The wear-resistant gasket 150 is made of self-lubricating material, which replaces the rotational friction between the folding blade 110 and the blade fixing seat 120 and the blade pressing plate 130, thereby increasing the service life of the folding blade assembly 100 as a vulnerable accessory.

[0060] The other structures of this embodiment are the same as those of the first embodiment and will not be described again here.

[0061] Embodiment 3

[0062] The difference between this embodiment and the second embodiment is that, based on the second embodiment, the rotor device of this embodiment further includes an arm assembly 300 , a motor assembly 400 and a shock absorbing assembly 500 .

[0063] In this embodiment, the UAV rotor device further includes an arm assembly 300, a motor assembly 400 and a shock absorbing assembly 500. The arm assembly 300 includes an arm fixing seat 310 and an arm connecting pipe 320 connected to each other. The arm connecting pipe 320 is used to connect the UAV fuselage. The motor assembly 400 is flexibly connected to the arm fixing seat 310 through the shock absorbing assembly 500. The motor assembly 400 is connected to the blade mounting mechanism to drive the folding blade assembly 100 to rotate. The motor assembly 400 is flexibly connected to the arm fixing seat 310 through the shock absorbing assembly 500, which effectively blocks and filters the vibration noise generated by the power assembly, greatly improving the stability of the aircraft flight state.

[0064] The motor assembly 400 of this embodiment is flexibly connected to the arm fixing seat 310 via the shock absorbing assembly 500, so that the motor assembly 400 can produce axial contraction, thereby eliminating the imbalance of the folding blades 110 and the vibration of the motor assembly 400 during operation.

[0065] In the machine arm assembly 300, the machine arm fixing seat 310 assembly is the basic fixing structure of the power assembly.

[0066] The motor assembly 400 includes a motor 410, the shock absorbing assembly 500 includes a shock absorbing fixing seat 510 and a shock absorbing rubber sleeve 520, the machine arm fixing seat 310 is provided with a receiving cavity 311 with an opening 312, the shock absorbing fixing seat 510 is located in the receiving cavity 311, the shock absorbing fixing seat 510 is connected to the motor 410 through the opening 312, and the shock absorbing rubber sleeve 520 is provided between the shock absorbing fixing seat 510 and the cavity wall of the receiving cavity 311 provided with the opening 312. The shock absorbing rubber sleeve 520 is deformable and restorable, and can absorb the imbalance of the folding blade 110 and the vibration of the motor assembly 400 when working.

[0067] The arm fixing seat 310 assembly further includes a locking bolt 330, and the arm fixing seat 310 is connected to the shock-absorbing fixing seat 510 and the motor 410 via the locking bolt 330. The motor assembly 400 further includes a blade adapter 420, and the motor assembly 400 is connected to the blade fixing seat 120 via the blade adapter 420.

[0068] The shock absorbing assembly 500 also includes an adjusting bolt 530. The shock absorbing fixing seat 510 is provided with a rubber sleeve mounting hole. The shock absorbing rubber sleeve 520 has rubber holes running through both ends thereof. The shock absorbing rubber sleeve 520 includes a first rubber portion 521, a second rubber portion 522 and a third rubber portion 523 connected in sequence. The diameters of the first rubber portion 521 and the third rubber portion 523 are greater than the diameter of the second rubber portion 522. The shock absorbing rubber sleeve 520 passes through the rubber sleeve mounting hole so that the second rubber portion 522 is located in the rubber sleeve mounting hole. The first rubber portion 521 and the third rubber portion 523 are located on both sides of the shock absorbing fixing seat 510. The adjusting bolt 530 passes through the rubber hole and is connected to the machine arm fixing seat 310. The first rubber portion 521 is located between the shock absorbing fixing seat 510 and the machine arm fixing seat 310. The third rubber portion 523 is located between the shock absorbing fixing seat 510 and the bolt head of the adjusting bolt 530.

[0069] In this embodiment, the middle of the adjusting bolt 530 is an optical axis, and the shock-absorbing rubber sleeve 520 is sleeved on the middle of the adjusting bolt 530, which can prevent the thread from damaging the shock-absorbing rubber sleeve 520 and extend the service life. The end of the adjusting bolt 530 away from its bolt head is provided with an external thread, and the cavity wall of the accommodating cavity is provided with a fixing hole. The adjusting bolt 530 passes through the shock-absorbing rubber sleeve 520 and is threadedly connected to the fixing hole.

[0070] In addition, the shock absorbing assembly 500 further includes a rubber sleeve gasket 540, which is sleeved outside the adjusting bolt 530 and is located between the bolt head of the adjusting bolt 530 and the third rubber portion 523, and the diameter of the rubber sleeve gasket 540 is greater than the diameter of the third rubber portion 523. The rubber sleeve gasket 540 increases the fixed contact area of ​​the shock absorbing rubber sleeve 520, reduces the deformation stress concentration of the shock absorbing rubber sleeve 520, and avoids the problem of accelerated aging of the shock absorbing rubber sleeve 520 due to stress concentration.

[0071] The diameter of the end of the adjusting bolt 530 is smaller than the diameter of the middle part, and is in a step shape. According to the height of the shock-absorbing rubber sleeve 520 and the thickness of the rubber sleeve gasket 540, the length of the middle part of the adjusting bolt 530 is set, and the adjusting bolt 530 is tightened on the machine arm fixing seat 310. The shock-absorbing rubber sleeve 520 double-layers press the shock-absorbing fixing seat 510 up and down, and a certain compression amount is preset in the assembly. The pre-tightening force of the fixed shock-absorbing fixing seat 510 is adjusted by the assembly compression amount, and the fixed damping strength is adjusted.

[0072] The other structures of this embodiment are the same as those of the second embodiment and will not be described again here.

[0073] Embodiment 4

[0074] An embodiment of the present invention provides a drone, comprising: a drone body and the drone rotor device of embodiment 1, embodiment 2 or embodiment 3. The drone rotor device is connected to the drone body, specifically, the drone rotor device is connected to the drone body through its arm connecting tube 320.

[0075] The working process of the present invention is as follows: when the UAV needs to work, the folding blades 110 in the folding blade assembly 100 are unfolded in parallel, and the folding blade limit assembly 200 is fixed on the blade pressing plate 130 through a quick release mechanism, so that the folding blades 110 are stuck between the limit blocks 220, and the folding blades 110 are fixed in the parallel unfolding state. At this time, when the motor assembly 400 is started to output power torque, the folding blades 110 will not generate large vibrations due to uneven force and be transmitted to the UAV fuselage and application equipment. At the same time, the shock absorbing assembly 500 is in a working state, and the shock absorbing rubber sleeve 520 blocks and filters the vibrations generated by the rotation of the motor assembly 400 and the folding blade assembly 100, effectively isolating the vibrations from being transmitted to the UAV fuselage and application equipment.

[0076] In summary, the embodiment of the present invention provides a drone rotor device, which is provided with a folding paddle limiting assembly 200, and the blade limiting member 210 of the folding paddle limiting assembly 200 is provided with a limiting block 220. When the folding paddle 110 is unfolded in place, the folding paddle limiting assembly 200 is installed on the folding paddle assembly 100, so that the folding paddle 110 is stuck between two or more limiting blocks 220, thereby limiting the folding paddle 110 from continuing to rotate, preventing the folding paddle 110 from deflecting during operation, solving the problem of blade imbalance, and reducing vibration, improving the folding paddle power efficiency and stability, and improving the output response of the power assembly. In addition, the motor 410 of the embodiment of the present invention is connected to the arm assembly 300 through the shock-absorbing fixing seat 510, and the shock-absorbing fixing seat 510 is flexibly connected to the arm assembly 300, effectively blocking and filtering the vibration noise generated by the power assembly, and greatly improving the stability of the aircraft flight state. Therefore, the drone shock-absorbing assembly 500 adopts a flexible connection, effectively blocking and filtering the vibration noise generated by the power assembly, and greatly improving the stability of the aircraft flight state. The folding propeller limit assembly 200 is used to limit the folding propeller blade 110, reduce the impact of the unbalanced vibration of the propeller blade, improve the power efficiency of the folding propeller, and improve the output response of the power assembly. The folding propeller limit assembly 200 is connected to the folding propeller blade assembly 100 using a quick release mechanism, and the quick release mechanism uses a spring to automatically reset and lock through a knob to achieve a fast propeller blade limit fixation and unlock folding function.

[0077] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A UAV rotor device, characterized in that: The invention comprises a folding blade assembly (100) and a folding blade limiting assembly (200), wherein the folding blade assembly (100) comprises a folding blade (110) and a blade mounting mechanism, wherein the folding blade (110) is rotatably connected to the blade mounting mechanism, and the folding blade limiting assembly (200) comprises a blade limiting member (210), wherein the blade limiting member (210) is detachably connected to the blade mounting mechanism, and wherein the blade limiting member (210) is provided with a limiting mechanism, wherein the limiting mechanism comprises at least two limiting blocks (220), and wherein the limiting blocks (220) are distributed on both sides of the folding blade (110).

2. The UAV rotor device according to claim 1, characterized in that: The folding paddle limiting assembly (200) further comprises a quick release mechanism, and the paddle limiting member (210) is connected to the paddle mounting mechanism via the quick release mechanism.

3. The UAV rotor device according to claim 2, characterized in that: The quick-release mechanism comprises a quick-release knob (230), a quick-release return spring (240) and a quick-release positioning pin (250); the quick-release knob (230) comprises a knob shaft (231) and a knob head (232) connected to each other; the knob shaft (231) is provided with a pin hole (233); the quick-release positioning pin (250) passes through the pin hole (233), so that the quick-release positioning pin (250) is perpendicular to the knob shaft (231); The paddle stopper (210) is provided with a first connecting hole (211) passing through the first connecting hole (211), so that the knob head (232) and the quick-release positioning pin (250) are located on both sides of the paddle stopper (210), the quick-release reset spring (240) is sleeved outside the knob shaft (231) and located in the first connecting hole (211), and the quick-release reset spring (240) is located between the knob head (232) and the quick-release positioning pin (250); The mounting structure is provided with a penetrating second connection hole, and the blade mounting mechanism is provided with two slots (133) communicating with the second connection hole on a side away from the blade stopper (210), and the two slots (133) are located in the same straight line; When the blade stopper (210) is connected to the blade mounting mechanism, the knob shaft (231) and the quick-release positioning pin (250) pass through the second connecting hole, and the knob shaft (231) can rotate so that the two ends of the quick-release positioning pin (250) can be inserted into the two slots (133).

4. The UAV rotor device according to claim 3, characterized in that: The quick-release mechanism further comprises a positioning member (260), wherein the positioning member (260) is a cylinder, and the positioning member (260) is coaxially arranged with the first connecting hole (211). The positioning member (260) and the quick-release positioning pin (250) are located on the same side of the blade limiting member (210), and one end of the positioning member (260) is connected to the blade limiting member (210), and the other end of the positioning member (260) is provided with four positioning notches (261), and the four positioning notches (261) are spaced 90 degrees from each other.

5. The UAV rotor device according to claim 4, characterized in that: The blade mounting mechanism comprises a blade fixing seat (120), a blade pressing sheet (130) and a fastening bolt (140); the blade fixing seat (120) is provided with a mounting column (121); the end of the folding blade (110) is provided with a first mounting hole (111); the folding blade (110) is sleeved on the mounting column (121) through the first mounting hole (111); the mounting column (121) is provided with a second mounting hole (122); the blade pressing sheet (130) is provided with a third mounting hole (134); the fastening bolt (140) passes through the third mounting hole (134) and is threadedly connected to the second mounting hole (122), so that the head of the folding blade (110) is located between the blade and the blade fixing seat (120); the second connecting hole and the clamping groove (133) are provided on the blade pressing sheet (130).

6. The UAV rotor device according to claim 1, characterized in that: The invention also comprises an arm assembly (300), a motor assembly (400) and a shock absorbing assembly (500); the arm assembly (300) comprises an arm fixing seat (310) and an arm connecting pipe (320) connected to each other; the arm connecting pipe (320) is used to connect to the fuselage of the unmanned aerial vehicle; the motor assembly (400) is flexibly connected to the arm fixing seat (310) via the shock absorbing assembly (500); and the motor assembly (400) is connected to the blade mounting mechanism to drive the folding blade assembly (100) to rotate.

7. The UAV rotor device according to claim 6, characterized in that: The motor assembly (400) comprises a motor (410); the shock absorbing assembly (500) comprises a shock absorbing fixing seat (510) and a shock absorbing rubber sleeve (520); the machine arm fixing seat (310) is provided with a receiving cavity (311) with an opening (312); the shock absorbing fixing seat (510) is located in the receiving cavity (311); the shock absorbing fixing seat (510) is connected to the motor (410) via the opening (312); and the shock absorbing rubber sleeve (520) is provided between the shock absorbing fixing seat (510) and a cavity wall of the receiving cavity (311) where the opening (312) is provided.

8. The UAV rotor device according to claim 7, characterized in that: The shock absorbing assembly (500) further comprises an adjusting bolt (530), a rubber sleeve mounting hole is provided on the shock absorbing fixing seat (510), the shock absorbing rubber sleeve (520) has rubber holes passing through both ends thereof, the shock absorbing rubber sleeve (520) comprises a first rubber portion (521), a second rubber portion (522) and a third rubber portion (523) connected in sequence, the diameters of the first rubber portion (521) and the third rubber portion (523) are greater than the diameter of the second rubber portion (522), the shock absorbing rubber sleeve (520) passes through the rubber sleeve mounting hole, and the shock absorbing rubber sleeve (520) is The second rubber part (522) is located in the rubber sleeve mounting hole, the first rubber part (521) and the third rubber part (523) are located on both sides of the shock absorbing fixing seat (510), the adjusting bolt (530) passes through the rubber hole and is connected to the machine arm fixing seat (310), the first rubber part (521) is located between the shock absorbing fixing seat (510) and the machine arm fixing seat (310), and the third rubber part (523) is located between the shock absorbing fixing seat (510) and the bolt head of the adjusting bolt (530).

9. The UAV rotor device according to claim 8, characterized in that: The shock absorbing assembly (500) further comprises a rubber sleeve gasket (540), wherein the rubber sleeve gasket (540) is sleeved outside the adjusting bolt (530), and the rubber sleeve gasket (540) is located between the bolt head of the adjusting bolt (530) and the third rubber portion (523), and the diameter of the rubber sleeve gasket (540) is greater than the diameter of the third rubber portion (523).

10. A drone, characterized in that: include: A UAV fuselage and a UAV rotor device as described in any one of claims 1 to 9.

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