A remote control unmanned aerial vehicle with disassembled blades

Abstract

This invention discloses a remote-controlled drone with detachable propellers, relating to the field of drone application technology. The drone includes a body with mounting arms fixedly connected to its four corners. Folding arms are hinged to the mounting arms via torsion springs. A rotor assembly for generating vertical movement of the drone is located above the outer end of each folding arm. A docking assembly for quick installation with the rotor assembly is also located on the outer end of each folding arm. This invention significantly improves the efficiency and ease of operation of the rotor system by optimizing the docking assembly structure. It employs a ball-load locking mechanism, combined with spring reset and manual control of the movable sleeve, achieving a tool-free "one-insert-one-lock" installation method, greatly simplifying maintenance and replacement processes. The precise alignment design of the ball bearings and docking grooves, combined with the auxiliary positioning of guide ridges and guide grooves, ensures centering during installation, avoiding wear or installation failure due to misalignment.

Description

Technical Field

[0001] This invention relates to the field of unmanned aerial vehicle (UAV) application technology, and more specifically to a remotely controlled UAV with detachable propellers. Background Technology

[0002] Drones generally refer to unmanned aerial vehicles that fly by remote control, autonomous programs, or artificial intelligence. They do not carry pilots and rely on power systems, flight control systems, sensors, and communication equipment to complete various tasks. Currently, drones are widely used in aerial photography, agriculture, surveying, inspection, and logistics. As a key component of the drone rotor system, the drone propeller directly affects the drone's flight performance and efficiency. Therefore, achieving rapid assembly and disassembly of the rotor (including the propeller) is crucial for improving the efficiency of drone use and maintenance.

[0003] Many existing small and medium-sized drones adopt fixed or simple plug-in rotor structures. The rotor and the arm are usually connected by bolts, clips or threads. The disassembly and assembly process requires tools, which is cumbersome and time-consuming. In outdoor operations, frequent transportation or applications that require quick blade replacement, such structures not only reduce work efficiency, but may also lead to decreased flight stability or even safety hazards due to improper installation. Summary of the Invention

[0004] The purpose of this invention is to provide a remote-controlled drone with detachable propellers to solve the problems of cumbersome assembly and disassembly, low efficiency, and safety hazards of the rotor system of drones in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a remote-controlled drone with detachable propellers, comprising a body, mounting arms fixedly connected to the four corners of the body, folding arms hinged to the mounting arms via a torsion spring structure, a rotor assembly for generating lift and drop motion of the drone being provided above the outer end of the folding arm, and a docking assembly for quick docking and installation with the rotor assembly being provided at the outer end of the folding arm.

[0006] The rotor assembly includes a mounting base located above the outer end of the folding arm. Several rotating rods are equidistantly arranged around the circumference of the mounting base. Blades are fixedly connected to the outer ends of the rotating rods. A mounting column is integrally fixedly connected to the center of the lower side of the mounting base. The mounting base and the mounting column are hollow structures. An adjustment component for changing the tilt state of the blades is provided inside the mounting column and the mounting base.

[0007] The docking assembly includes a mounting cylinder sleeved around the outside of the mounting post. A movable sleeve is slidably fitted around the outside of the mounting cylinder. An upper annular groove is formed on the upper inner wall of the movable sleeve, and a lower annular groove is formed on the lower inner wall of the movable sleeve. A plurality of mounting holes are equidistantly formed around the middle of the mounting cylinder, and a ball is movably embedded in the mounting hole. A plurality of docking grooves for the ball to be pushed in are equidistantly formed around the outer circumference of the mounting post. A spring is provided in the lower annular groove. The upper end of the spring is fixedly connected to the upper wall of the lower annular groove, and the lower end of the spring is fixedly connected to a fixed ring. The fixed ring is fixedly connected to the outside of the mounting cylinder. A control component for driving its rotation is provided at the lower end of the mounting post.

[0008] Furthermore, the end diameter of the mounting hole is smaller than the diameter of the ball, the middle diameter of the mounting hole is 1-2 mm larger than the diameter of the ball, and the diameter of the ball is also larger than the wall thickness of the mounting cylinder.

[0009] Furthermore, a sealing groove is provided on the outer wall of the mounting cylinder, and a sealing ring is fitted inside the sealing groove, with the sealing groove located above the mounting hole.

[0010] Furthermore, the movable sleeve is integrally fixedly connected to a hand lever ring on the outside.

[0011] Furthermore, the lower end of the upper annular groove is provided with a conical surface.

[0012] Furthermore, the number of the mating grooves and mounting holes is the same.

[0013] Furthermore, the mounting column is also circumferentially fixedly connected with several protruding strips, and the inner wall of the mounting cylinder is provided with several guide grooves corresponding to the protruding strips, with the protruding strips slidably connected in the guide grooves.

[0014] Furthermore, the adjusting component includes a second driving component fixedly connected inside the mounting cylinder. The second driving component is a small motor. A second bevel gear is fixedly connected to the output end of the second driving component. Two first bevel gears are symmetrically meshed around the second bevel gear. The first bevel gears are fixedly connected to the inner end of the rotating rod.

[0015] Furthermore, the control component includes a driven gear fixedly connected to the lower end of the mounting cylinder, a pivot pin fixedly connected to the center of the lower side of the driven gear, the pivot pin being rotatably mounted on the folding arm, and a driving gear meshing with the outer periphery of the driven gear. The driving gear is driven to rotate by a driving component, which is a motor and fixedly mounted on the folding arm.

[0016] Furthermore, the driven gear has a larger diameter than the driving gear.

[0017] Compared with the prior art, the remote-controlled drone with detachable propellers provided by the present invention has the following beneficial effects:

[0018] 1. This invention significantly improves the efficiency and ease of operation of the rotor system by optimizing the docking component structure. It adopts a ball-loaded locking mechanism, combined with spring reset and manual control of the movable sleeve, to achieve a tool-free "one-insert-one-lock" installation method, which greatly simplifies the maintenance and replacement process. The precise alignment design of the ball and the docking groove, combined with the auxiliary positioning of the guide ridge and guide groove, ensures the centering during the installation process and avoids wear or installation failure caused by misalignment. In addition, the sealing ring effectively isolates external dust and moisture, enhances the reliability and service life of the component in harsh environments, and enables the UAV to maintain stable docking performance in outdoor, dusty or humid environments.

[0019] 2. This invention further improves the overall safety and operational flexibility of the UAV by setting up a docking component. The mounting hole adopts a stepped diameter design, which not only ensures smooth movement of the ball bearings but also prevents them from accidentally falling off, thus enhancing the safety redundancy of the locking process. The conical surface structure of the movable sleeve's ring groove optimizes the ball bearings' retraction effect. Combined with the user-friendly design of the hand-operated ring, disassembly and reassembly operations are made easier and faster. This component not only enables quick assembly and disassembly of the rotor but also provides a stable mechanical foundation for subsequent functional expansion, such as rotor angle adjustment and overall rotation control. The overall structure is compact and the transmission is reliable. While improving the user experience, it also enhances the adaptability and maintainability of the UAV in diverse tasks such as inspection, aerial photography, and transportation. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 A cross-sectional view of the connection structure of the docking assembly and the rotor assembly provided in an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall three-dimensional structure provided in an embodiment of the present invention;

[0023] Figure 3 A three-dimensional connection structure diagram of the docking assembly, rotor assembly, and folding arm provided in an embodiment of the present invention;

[0024] Figure 4 For the present invention Figure 1 Enlarged structural diagram of region A in the middle;

[0025] Figure 5 This is a top sectional view of the connection structure of the mounting cylinder and mounting column provided in an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Airframe; 2. Mounting arm; 3. Folding arm; 4. Docking assembly; 41. Driven gear; 42. Driving gear; 43. Drive component one; 44. Rotating pin; 45. Mounting cylinder; 451. Sealing groove; 452. Mounting hole; 453. Raised strip; 46. Sealing ring; 47. Ball bearing; 48. Movable sleeve; 481. Upper ring groove; 482. Hand-operated ring; 483. Conical surface; 484. Lower ring groove; 49. Spring; 410. Fixed ring; 5. Rotor assembly; 51. Mounting base; 52. Blade; 53. Rotating rod; 54. Bevel gear one; 55. Bevel gear two; 56. Drive component two; 57. Mounting post; 571. Docking groove; 572. Guide groove. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] As attached Figure 1 To be continued Figure 5 As shown:

[0030] Example 1:

[0031] The present invention provides a remote-controlled drone with detachable propellers, including a body 1. Mounting arms 2 are fixedly connected to the four corners of the body 1. Folding arms 3 are hinged to the mounting arms 2 via a torsion spring structure. A rotor assembly 5 for generating lift and drop motion of the drone is provided above the outer end of the folding arm 3. A docking assembly 4 for quick docking and installation with the rotor assembly 5 is provided on the outer end of the folding arm 3.

[0032] Working process: The four corners of the body 1 are fixed to the mounting arms 2. The mounting arms 2 are hinged to the folding arms 3 through torsion springs. When the drone needs to fly, the folding arms 3 are unfolded by the torsion springs; when parked, the folding arms 3 can be folded up to save space.

[0033] Working principle: The torsion spring structure provides elastic restoring force, enabling the folding arm 3 to be quickly unfolded and retracted. One-click folding and unfolding is achieved through the torsion spring, improving the portability and storage efficiency of the drone (the torsion spring structure is a conventional technology).

[0034] The rotor assembly 5 includes a mounting base 51 located above the outer end of the folding arm 3. Several rotating rods 53 are equidistantly arranged around the circumference of the mounting base 51. The outer ends of the rotating rods 53 are fixedly connected to blades 52. A mounting column 57 is integrally fixedly connected to the lower center of the mounting base 51. The mounting base 51 and the mounting column 57 are hollow structures. The mounting column 57 and the mounting base 51 are both equipped with an adjustment component for changing the tilt state of the blades 52.

[0035] Working process: The rotor assembly 5 docks with the folding arm 3 through the mounting base 51. The mounting base 51 has a rotating rod 53 around its circumference. The outer end of the rotating rod 53 is connected to the blade 52. The mounting post 57 is inserted into the docking assembly 4 to achieve quick installation.

[0036] Working principle: The mounting base 51 and mounting column 57 are hollow structures with internal adjustment components that can change the rotor tilt angle to achieve multi-directional thrust control. The adjustable rotor tilt angle can improve the maneuverability and flight stability of the UAV and adapt to complex flight missions.

[0037] The docking assembly 4 includes a mounting cylinder 45 sleeved on the outside of the mounting post 57. A movable sleeve 48 is slidably sleeved on the outside of the mounting cylinder 45. An upper annular groove 481 is formed on the upper inner wall of the movable sleeve 48, and a lower annular groove 484 is formed on the lower inner wall of the movable sleeve 48. A plurality of mounting holes 452 are equidistantly formed on the middle circumference of the mounting cylinder 45. A ball bearing 47 is movably embedded in the mounting hole 452. A plurality of docking grooves 571 for the ball bearing 47 to be pushed into are equidistantly formed on the outer circumference of the mounting post 57. A spring 49 is provided in the lower annular groove 484. The upper end of the spring 49 is fixedly connected to the upper wall of the lower annular groove 484, and the lower end of the spring 49 is fixedly connected to a fixing ring 410. The fixing ring 410 is fixedly connected to the outside of the mounting cylinder 45. A control component for driving the rotation of the mounting post 57 is provided at the lower end of the mounting post 57.

[0038] Working process: Before the mounting post 57 is inserted into the mounting cylinder 45, the movable sleeve 48 needs to be controlled to slide downward so that the upper ring groove 481 corresponds to the position of the ball 47. In this state, the ball 47 is not subjected to external force and is pushed out by the outer wall of the mounting post 57 to the middle of the mounting hole (452). After the mating groove 571 corresponds to the position of the ball 47, the movable sleeve 48 is loosened. Under the action of the spring 49, the middle position of the movable sleeve 48 is squeezed towards the ball 47, so that the ball 47 is pushed into the mating groove 571, thereby realizing the quick assembly and disassembly of the mounting post 57 and the mounting cylinder 45.

[0039] The end diameter of the mounting hole 452 is smaller than the diameter of the ball 47, the middle diameter of the mounting hole 452 is 1-2 mm larger than the diameter of the ball 47, and the diameter of the ball 47 is also larger than the wall thickness of the mounting cylinder 45.

[0040] Working process: The diameter of the middle part of the mounting hole 452 is slightly larger than that of the ball 47 to facilitate the movement of the ball 47; the diameter of the end is smaller than that of the ball 47 to prevent it from falling out;

[0041] Working principle: The ball 47 rolls freely within the mounting hole 452, achieving smooth insertion and withdrawal. This anti-drop design ensures structural safety, and the movement space of the ball 47 is optimized to reduce wear.

[0042] A sealing groove 451 is also provided on the outer wall of the mounting cylinder 45, and a sealing ring 46 is fitted inside the sealing groove 451. The sealing groove 451 is located above the mounting hole 452.

[0043] Working principle: The sealing ring 46 can prevent dust and moisture from entering the gap between the mounting hole 452 and the ball 47, enhancing the environmental adaptability of the docking component 4, and making it suitable for outdoor or dusty environments.

[0044] The movable sleeve 48 is externally fixedly connected to a hand lever ring 482.

[0045] Working principle: The hand-operated ring 482 is fixed together with the movable sleeve 48. The user can control the up and down movement of the movable sleeve 48 by turning the hand-operated ring 482.

[0046] The lower end of the upper annular groove 481 is provided with a conical surface 483.

[0047] Working principle: By utilizing the contact between the conical surface 483 and the ball 47, it can be ensured that when the spring 49 lifts the movable sleeve 48, it can slide smoothly and achieve quick disassembly.

[0048] The number of mating grooves 571 and mounting holes 452 are the same.

[0049] The mounting post 57 is also fixedly connected with several protrusions 453 at equal intervals around its periphery. The inner wall of the mounting cylinder 45 is provided with several guide grooves 572 corresponding to the protrusions 453. The protrusions 453 are slidably connected in the guide grooves 572.

[0050] Working process: The mounting column 57 is provided with a protruding strip 453 on the outside, and the inner wall of the mounting cylinder 45 is provided with a corresponding guide groove 572. When inserted, the protruding strip 453 slides along the guide groove 572.

[0051] Working principle: The guide structure can ensure the correct positioning of the mounting post 57, prevent misalignment, improve docking accuracy, prevent the rotor assembly 5 from being installed crookedly, and at the same time ensure the alignment of the docking groove 571 and the ball 47.

[0052] The adjusting component includes a second driving component 56 fixedly connected inside the mounting cylinder 45. The second driving component 56 is a small motor. A second bevel gear 55 is fixedly connected to the output end of the second driving component 56. Two first bevel gears 54 are symmetrically meshed around the second bevel gear 55. The first bevel gears 54 are fixedly connected to the inner end of the rotating rod 53.

[0053] Working process: Drive component 2 56 (motor) drives bevel gear 2 55, which drives symmetrical bevel gear 1 54, thereby rotating rod 53 and changing rotor tilt angle;

[0054] Working principle: The rotor tilts synchronously through gear transmission, adjusting the thrust direction, thereby achieving dynamic rotor angle adjustment and improving the drone's maneuverability and control flexibility.

[0055] Example 2:

[0056] This embodiment is basically the same as the previous embodiment, except that the control component includes a driven gear 41 fixedly connected to the lower end of the mounting cylinder 45, a pivot pin 44 fixedly connected to the lower center of the driven gear 41, the pivot pin 44 is rotatably mounted on the folding arm 3, and a driving gear 42 is meshed around the driven gear 41. The driving gear 42 is driven to rotate by a driving component 43, which is a motor and fixedly mounted on the folding arm 3.

[0057] The diameter of the driven gear 41 is larger than the diameter of the driving gear 42.

[0058] Working process: The driving component 43 (motor) drives the driving gear 42, which meshes with the driven gear 41. The driven gear 41 drives the mounting cylinder 45 to rotate through the rotating pin 44.

[0059] Working principle: Gear transmission provides sufficient torque to achieve overall rotation control of rotor assembly 5. The combination of large and small gears can improve transmission efficiency and control accuracy.

[0060] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A remotely controlled unmanned aerial vehicle (UAV) with detachable propellers, comprising a body (1), characterized in that: The body (1) is fixedly connected to the four corners of the mounting arm (2). The mounting arm (2) is hinged to the folding arm (3) by a torsion spring structure. The outer end of the folding arm (3) is provided with a rotor assembly (5) for making the drone rise and fall. The outer end of the folding arm (3) is provided with a docking assembly (4) for quick docking and installation with the rotor assembly (5). The rotor assembly (5) includes a mounting base (51) located above the outer end of the folding arm (3). Several rotating rods (53) are equidistantly arranged on the circumference of the mounting base (51). The outer ends of the rotating rods (53) are fixedly connected to blades (52). A mounting column (57) is integrally fixedly connected to the center of the lower side of the mounting base (51). The mounting base (51) and the mounting column (57) are hollow structures. The mounting column (57) and the mounting base (51) are both provided with an adjustment component for changing the tilt state of the blades (52). The docking assembly (4) includes a mounting cylinder (45) sleeved on the outside of the mounting post (57). A movable sleeve (48) is slidably sleeved on the outside of the mounting cylinder (45). An upper ring groove (481) is opened on the upper inner wall of the movable sleeve (48), and a lower ring groove (484) is opened on the lower inner wall of the movable sleeve (48). A number of mounting holes (452) are equidistantly opened on the middle circumference of the mounting cylinder (45). A ball (47) is movably embedded in the mounting hole (452). A number of docking grooves (571) for the ball (47) to be pushed in are equidistantly opened on the outer circumference of the mounting post (57). A spring (49) is provided in the lower ring groove (484). The upper end of the spring (49) is fixedly connected to the upper wall of the lower ring groove (484), and the lower end of the spring (49) is fixedly connected to the fixing ring (410). The fixing ring (410) is fixedly connected to the outside of the mounting cylinder (45). A control component for driving its rotation is provided at the lower end of the mounting post (57).

2. A remotely controlled drone with detachable propellers according to claim 1, characterized in that: The end diameter of the mounting hole (452) is smaller than the diameter of the ball (47), the middle diameter of the mounting hole (452) is 1-2 mm larger than the diameter of the ball (47), and the diameter of the ball (47) is also larger than the wall thickness of the mounting cylinder (45).

3. A remotely controlled drone with detachable propellers according to claim 1, characterized in that: A sealing groove (451) is also provided on the outer wall of the mounting cylinder (45), and a sealing ring (46) is fitted inside the sealing groove (451). The sealing groove (451) is located above the mounting hole (452).

4. A remotely controlled drone with detachable propellers according to claim 1, characterized in that: The movable sleeve (48) is externally fixedly connected to a hand lever ring (482).

5. A remotely controlled unmanned aerial vehicle (UAV) with detachable propellers according to claim 1, characterized in that: The lower end of the upper annular groove (481) is provided with a conical surface (483).

6. A remotely controlled unmanned aerial vehicle (UAV) with detachable propellers according to claim 1, characterized in that: The number of the mating grooves (571) and the mounting holes (452) are the same.

7. A remotely controlled unmanned aerial vehicle (UAV) with detachable propellers according to claim 1, characterized in that: The mounting column (57) is also fixedly connected with several protrusions (453) at equal intervals around its periphery. The inner wall of the mounting cylinder (45) is provided with several guide grooves (572) corresponding to the protrusions (453). The protrusions (453) are slidably connected in the guide grooves (572).

8. A remotely controlled unmanned aerial vehicle (UAV) with detachable propellers according to claim 1, characterized in that: The adjusting component includes a second driving component (56) fixedly connected inside the mounting cylinder (45). The second driving component (56) is a small motor. A second bevel gear (55) is fixedly connected to the output end of the second driving component (56). Two first bevel gears (54) are symmetrically meshed around the second bevel gear (55). The first bevel gears (54) are fixedly connected to the inner end of the rotating rod (53).

9. A remotely controlled unmanned aerial vehicle (UAV) with detachable propellers according to claim 1, characterized in that: The control component includes a driven gear (41) fixedly connected to the lower end of the mounting cylinder (45). A pivot pin (44) is fixedly connected to the center of the lower side of the driven gear (41). The pivot pin (44) is rotatably mounted on the folding arm (3). A drive gear (42) is meshed around the driven gear (41). The drive gear (42) is driven to run by a drive component (43). The drive component (43) is a motor and is fixedly mounted on the folding arm (3).

10. A remotely controlled unmanned aerial vehicle (UAV) with detachable propellers according to claim 1, characterized in that: The diameter of the driven gear (41) is larger than the diameter of the driving gear (42).

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