Unmanned aerial vehicle with telescopic rack with large folding-unfolding ratio

Abstract

The invention relates to an unmanned aerial vehicle with a telescopic rack with a large folding-unfolding ratio, and the unmanned aerial vehicle comprises a rack assembly which can stretch out and draw back in the radial direction by taking the axis of the unmanned aerial vehicle as the center so as to change the size of an unmanned aerial vehicle body; the driving assembly is used for driving the rack assembly to stretch out and draw back; and the rotor wing assembly is used for driving the unmanned aerial vehicle and is mounted on the rack assembly. According to the unmanned aerial vehicle, before the unmanned aerial vehicle passes through an obstacle, the rack assembly can contract inwards to reduce the size of the vehicle body, and then the rotor assemblies drive the unmanned aerial vehicle to fly and pass through the obstacle; and after crossing the obstacle, the rack assembly extends outwards to unfold the aircraft body, so that the subsequent flight stability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicles (UAVs), and in particular to a UAV with a telescopic frame having a large folding and unfolding ratio. Background Art

[0002] The frames of traditional rotor UAVs are mostly fixed structures. When crossing obstacles, UAVs of this type of structure often have the problem of being unable to effectively cross obstacles because the frame size is larger than the obstacle gap due to the fixed frame structure. Summary of the Invention

[0003] In response to the above problems, a drone with a telescopic frame with a large folding and unfolding ratio is provided, which aims to effectively solve the problems existing in existing fixed-frame drones.

[0004] The specific technical solutions are as follows: A UAV with a telescopic frame having a large folding and extending ratio, comprising: The frame assembly can be extended and retracted in the radial direction around the axis of the UAV to change the size of the UAV body; A driving assembly, configured to drive the frame assembly to extend and retract; and The rotor assembly is used to drive the UAV and is installed on the frame assembly.

[0005] Furthermore, the rack assembly includes a first rack arranged horizontally, the first rack is ring-shaped, and is formed by a plurality of first rack rods hinged to each other through a first hinge point.

[0006] Furthermore, the frame assembly includes a horizontally arranged second frame, the second frame is ring-shaped, and the second frame is formed by multiple second frame rods hinged to each other through second hinge points. The first frame rod and the second frame rod are hinged to each other in a scissor-shaped manner.

[0007] Furthermore, the driving assembly includes a positioning plate and a plurality of driving rods. The driving rods are installed on the positioning plate at intervals. The driving rods can slide along the radial direction of the positioning plate. The driving rods are connected to the first hinge point.

[0008] Furthermore, the driving assembly includes a positioning plate and a plurality of driving rods. The driving rods are installed on the positioning plate at intervals. The driving rods can slide along the radial direction of the positioning plate. The driving rods are connected to the second hinge point.

[0009] Furthermore, the drive assembly also includes a drive disk, which is installed on the positioning disk. The drive rod is located between the drive disk and the positioning disk. The drive disk is provided with multiple spiral drive grooves, and one end of the drive rod is installed in the drive grooves one by one.

[0010] Furthermore, the positioning plate is provided with a plurality of sliding grooves corresponding to the driving rods respectively, and the driving rods can slide along the sliding grooves.

[0011] Furthermore, the rotor assembly includes a rotor rod and a drive rotor, wherein one end of the rotor rod close to the frame assembly is slidably mounted on the positioning plate, and the other end of the rotor rod away from the frame assembly is fixedly mounted on the first hinge point, and the drive rotor is mounted on the rotor rod.

[0012] Furthermore, the rotor assembly includes a rotor rod and a driving rotor, one end of the rotor rod close to the frame assembly is fixedly installed on the first hinge point, and the other end of the rotor rod away from the frame assembly is slidably installed on the second hinge point by a sliding sleeve.

[0013] Furthermore, the rotor assembly includes a rotor rod and a driving rotor, wherein one end of the rotor rod close to the frame assembly is slidably mounted on a first hinge point, and the other end of the rotor rod away from the frame assembly is fixedly mounted on a second hinge point.

[0014] The beneficial effects of the above scheme are: In the present invention, before the UAV passes through an obstacle, the frame assembly can first retract inward to reduce the body volume, and then the rotor assembly drives the UAV to fly and pass through the obstacle; after passing the obstacle, the frame assembly extends outward to unfold the body and improve subsequent flight stability.

[0015] The invention reduces the air area swept by the drone after it is folded, which reduces the air resistance during high-speed flight, improves the endurance of the drone and its maneuverability during high-speed flight. The drone of the present invention occupies a small space after being folded, and is convenient for storage and transportation.

[0016] The drone of the present invention can be equipped with four, six, eight or other rotors according to work requirements. The number and position of the rotors can be set by the user to meet the needs of aerobatic flights and diversified work scenarios, and has rich application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the unfolded state of a drone provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of a retracted state of a drone provided in an embodiment of the present invention; Figure 3 Schematic diagram of the structure of the drive assembly provided in an embodiment of the present invention.

[0018] In the drawings: 100, frame assembly; 110, first frame rod; 120, second frame rod; 200, drive assembly; 210, positioning plate; 211, slide; 220, drive rod; 230, drive plate; 231, drive slot; 300, rotor assembly; 310, rotor rod; 320, drive rotor; DETAILED DESCRIPTION The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other.

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0021] like Figures 1 to 3 As shown, an embodiment of the present invention provides a drone with a telescopic frame having a large folding and unfolding ratio, including a frame assembly 100, a drive assembly 200, and a rotor assembly 300; the frame assembly 100 can be extended and retracted in a radial direction with the axis of the drone as the center to change the size of the drone body; the drive assembly 200 is used to drive the frame assembly 100 to extend and retract; the rotor assembly 300 is used to drive the drone and is installed on the frame assembly 100.

[0022] In the present invention, before the UAV passes through an obstacle, the frame assembly 100 can first retract inward to reduce the body volume, and then the rotor assembly 300 drives the UAV to fly and pass through the obstacle; after passing through the obstacle, the frame assembly 100 extends outward to unfold the body and improve subsequent flight stability.

[0023] As a specific example, Figure 1 、 Figure 2 As shown, the frame assembly 100 includes a horizontally arranged first frame, which is annular and is formed by a plurality of first frame rods 110 hinged to each other through first hinge points. Under the above structure, the volume of the drone body can be changed by pushing the first frame rods 110 outward or inward to meet the needs of crossing obstacles. Based on this technical solution, as Figure 1 、 Figure 2 As shown, the frame assembly 100 may further include a horizontally arranged second frame, the second frame being ring-shaped, and the second frame being formed by a plurality of second frame rods 120 hinged to each other through a second hinge point, and the first frame rod 110 and the second frame rod 120 being hinged to each other in a scissor-like shape. The scissor-like mechanism formed by the hinged connection of the first frame rod 110 and the second frame rod 120 can effectively enhance the overall stability of the body structure.

[0024] As a specific example, Figure 1 、 Figure 2 、 Figure 3As shown, the driving assembly 200 includes a positioning plate 210 and three driving rods 220. The driving rods 220 are arranged on the positioning plate 210 at intervals along the circumferential direction of the positioning plate 210, and the driving rods 220 can slide along the radial direction of the positioning plate 210. The driving rods 220 are connected to the first hinge point or the second hinge point. Under the above structure, when the driving rods 220 slide inwardly along the radial direction of the positioning plate 210, the driving rods 220 drive the first frame rod 110 or the second frame rod 120 inward, so that the frame assembly 100 contracts inward (such as Figure 2 When the drive rod 220 slides inwardly along the radial direction of the positioning plate 210, the drive rod 220 drives the first rack rod 110 or the second rack rod 120 outward, causing the rack assembly 100 to retract outward (as shown); Figure 1 shown).

[0025] As a specific example, Figure 1 、 Figure 2 、 Figure 3 As shown, in order to synchronously drive the three drive rods 220, the drive assembly 200 further includes a drive disk 230, which is rotatably mounted on the positioning disk 210. The drive rods 220 are located between the drive disk 230 and the positioning disk 210. The drive disk 230 is provided with three spiral drive grooves 231, and one end of the drive rods 220 is respectively installed in the drive grooves 231. Under the above structure, when the drive disk 230 rotates, the drive disk drives the drive rods 220, thereby driving the frame assembly 100 to extend or retract with the help of the drive rods 220. In the above process, to guide the drive rods 220 to slide, three sliding grooves 211 can also be provided on the positioning disk 210, and the portion of the drive rod 220 that penetrates the positioning disk 210 is seated in the sliding grooves 211. When the drive disk drives the drive rod 220, the drive rod 220 can slide rapidly along the sliding grooves 211.

[0026] As a specific example, Figure 1 、 Figure 2As shown, rotor assembly 300 includes a rotor rod 310 and a drive rotor 320. One end of rotor rod 310, which is close to frame assembly 100, is fixedly mounted on a first hinge point. The other end of rotor rod 310, which is away from frame assembly 100, is slidably mounted on a second hinge point via a sliding sleeve (a sliding sleeve can be provided on the second hinge point, with the other end of rotor rod 310 passing through the sliding sleeve). With the above structure, when frame assembly 100 is retracted or extended, first frame rod 110 can be used to push rotor rod 310, causing rotor rod 310 to retract or extend synchronously with frame assembly 100. It is not difficult to understand that those skilled in the art may also choose to slide the end of the rotor rod 310 close to the frame assembly 100 on the first hinge point, and fix the other end of the rotor rod 310 away from the frame assembly 100 on the second hinge point; similarly, those skilled in the art may also choose to fix the other end of the rotor rod 310 away from the frame assembly 100 on the first hinge point, and install the drive rotor 320 on the rotor rod 310.

[0027] The above are only preferred embodiments of the present invention and do not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A UAV with a telescopic frame with a large folding and unfolding ratio, characterized in that: include: A frame assembly, wherein the frame assembly can be extended and retracted in a radial direction with the axis of the UAV as the center to change the size of the UAV body; A driving assembly, used for driving the frame assembly to extend and retract; as well as The rotor assembly is used to drive the UAV and is installed on the frame assembly.

2. The UAV with a telescopic frame having a large folding and unfolding ratio according to claim 1, characterized in that: The frame assembly includes a first frame arranged horizontally, the first frame is ring-shaped, and the first frame is formed by a plurality of first frame rods hinged to each other through a first hinge point.

3. The UAV with a telescopic frame having a large folding and unfolding ratio according to claim 2, characterized in that: The frame assembly includes a horizontally arranged second frame, the second frame is ring-shaped, and the second frame is formed by a plurality of second frame rods hinged to each other through second hinge points. The first frame rod and the second frame rod are hinged to each other in a scissor-shaped manner.

4. The UAV with a telescopic frame having a large folding and unfolding ratio according to claim 2, characterized in that: The driving assembly includes a positioning plate and a plurality of driving rods. The driving rods are installed on the positioning plate at intervals and can slide along the radial direction of the positioning plate. The driving rods are connected to adjacent first hinge points.

5. The UAV with a telescopic frame having a large folding and unfolding ratio according to claim 3, characterized in that: The driving assembly includes a positioning plate and a plurality of driving rods. The driving rods are installed on the positioning plate at intervals and can slide along the radial direction of the positioning plate. The driving rods are connected to the second hinge point.

6. The UAV with a telescopic frame having a large folding and unfolding ratio according to claim 4 or 5, characterized in that: The driving assembly also includes a driving disk, which is installed on the positioning disk. The driving rod is located between the driving disk and the positioning disk. The driving disk is provided with multiple spiral driving grooves, and one end of the driving rod is installed in each of the driving grooves.

7. The UAV with a telescopic frame having a large folding and unfolding ratio according to claim 6, characterized in that: The positioning plate is provided with a plurality of sliding grooves corresponding to the driving rods one by one, and the driving rods can slide along the sliding grooves.

8. The UAV with a telescopic frame having a large folding and unfolding ratio according to claim 4, characterized in that: The rotor assembly includes a rotor rod and a driving rotor. One end of the rotor rod close to the frame assembly is slidably mounted on the positioning plate, and the other end of the rotor rod away from the frame assembly is fixedly mounted on the first hinge point. The driving rotor is mounted on the rotor rod.

9. The UAV with a telescopic frame having a large folding and unfolding ratio according to claim 5, characterized in that: The rotor assembly includes a rotor rod and a driving rotor. One end of the rotor rod close to the frame assembly is fixedly installed on the first hinge point, and the other end of the rotor rod away from the frame assembly is slidably installed on the second hinge point.

10. The UAV with a telescopic frame having a large folding and unfolding ratio according to claim 5, characterized in that: The rotor assembly includes a rotor rod and a driving rotor. One end of the rotor rod close to the frame assembly is slidably mounted on the first hinge point, and the other end of the rotor rod away from the frame assembly is fixedly mounted on the second hinge point.

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