Unmanned aerial vehicle arm folding mechanism

Abstract

The unmanned aerial vehicle arm folding mechanism comprises a vehicle body, at least three vehicle arms, connecting pieces, telescopic pieces and power pieces, the vehicle arms are circumferentially arranged on the outer ring of the vehicle body, the connecting pieces are arranged between the vehicle arms and the vehicle body and drive the vehicle arms to rotate, the telescopic pieces are arranged on the vehicle arms in a telescopic mode, and the power pieces are fixedly arranged on the telescopic pieces. The fuselage is driven to fly. According to the unmanned aerial vehicle arm folding mechanism, through matched arrangement of the connecting pieces and the vehicle arms, it is ensured that the vehicle arms can be folded, and the diameter of the unmanned aerial vehicle in the width direction is reduced, through matched arrangement of the telescopic pieces and the vehicle arms, it is ensured that the vehicle arms can stretch out and draw back, and the diameter of the unmanned aerial vehicle in the length direction is reduced; according to the unmanned aerial vehicle, the size of the whole unmanned aerial vehicle can be reduced, three fan blades and a screw rod are arranged in a matched mode, it is ensured that the fan blades can be folded, it is ensured that the fan blades can coincide with the vehicle arms, and the unmanned aerial vehicle becomes small after being folded.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicle folding, in particular to a folding mechanism for an arm of an unmanned aerial vehicle. Background Art

[0002] A drone is an unmanned aircraft controlled by a radio remote control device and a self-contained program control device. The drone arm is a motion device installed on the drone load platform, mainly to complete the operation of the drone-mounted equipment. At present, in order to facilitate the carrying of drones, drones are generally placed in boxes, which is not only convenient for transportation, but also improves the safety of drones during transportation. However, the drone arms and wings cannot be folded at present, so a larger box is required during installation, which not only takes up space during transportation, but is also inconvenient to place in the box. Some arms can be folded, but the wings cannot be folded, so a larger space is still required. Because the arms need to be folded, the length of the arms is related to the size of the fuselage. If the arms are too long, the drone will become a long strip after folding. If the arms are too short, the wings cannot be lengthened, thus affecting the stability of the drone flight. Utility Model Content

[0003] The utility model aims to provide a drone arm folding mechanism to solve the problem that the existing drones occupy a large space during transportation.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A drone arm folding mechanism, comprising:

[0006] A fuselage; at least three arms are provided, which are circumferentially arranged on the outer circle of the fuselage; a connecting member is provided between the arm and the fuselage to drive the arm to rotate; a telescopic member is telescopically provided on the arm; and a power member is fixedly provided on the telescopic member to drive the fuselage to fly.

[0007] Furthermore, the connecting member includes a fixed shaft vertically arranged on the fuselage, and a locking block fixedly arranged on the fuselage, the machine arm and the fixed shaft are rotatably connected, and the locking block fastens the machine arm by screws.

[0008] Furthermore, the locking block is provided with an arc-shaped groove, and the machine arm is clamped in the arc-shaped groove.

[0009] Furthermore, the telescopic member includes a sleeve telescopically arranged on the arm, and a fastener locking the sleeve, the sleeve and the arm are respectively provided with through holes, the fastener is inserted into the through holes, and the power member is fixedly arranged on the sleeve.

[0010] Furthermore, the power member includes a support leg fixedly arranged on the sleeve, a motor fixedly arranged on the support leg, and a fan blade fixedly arranged on a driving end of the motor.

[0011] Furthermore, the power member includes a support leg fixedly arranged on the sleeve, a motor fixedly arranged on the support leg, and a fan blade fixedly arranged on a driving end of the motor.

[0012] Furthermore, a base is fixedly provided at the driving end of the motor, a screw rod is threadedly connected to the middle of the base, and the three washers are inserted on the screw rod.

[0013] Furthermore, the upper and lower end surfaces of the three gaskets are respectively provided with a spherical groove and a spherical protrusion, and the spherical protrusion is clamped in the spherical groove.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The drone arm folding mechanism described in the utility model ensures that the arm can be folded and the diameter of the drone in the width direction is reduced through the matching arrangement of the connecting piece and the arm, ensures that the arm can be telescopic and the diameter of the drone in the length direction is reduced through the matching arrangement of the telescopic piece and the arm, ensures that the size of the entire drone can be reduced through the matching arrangement of the connecting piece and the telescopic piece, ensures that the fan blades can be folded and that the fan blades can overlap with the arm, so that the drone becomes smaller after being folded, and ensures the clamping strength of the three fan blades through the matching arrangement of the spherical groove and the spherical protrusion, avoids changes in the angle between the three wings during use, and ensures the stability of flight. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of the UAV arm folding mechanism according to an embodiment of the utility model;

[0018] Figure 2 This is an exploded schematic diagram of the connecting member according to an embodiment of the utility model;

[0019] Figure 3 This is a diagram of the folded state of the machine arm and the fan blades according to the embodiment of the utility model;

[0020] Figure 4 This is an exploded schematic diagram of the machine arm and telescopic member according to an embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram of the decomposition of the fan blades and the screw rod according to the embodiment of the utility model;

[0022] Figure 6 This is a cross-sectional view of the gasket described in an embodiment of the utility model.

[0023] Description of reference numerals:

[0024] 1. Fuselage; 2. Arm;

[0025] 3. Connecting piece; 301. Fixed shaft; 302. Locking block; 303. Screw; 304. Arc groove;

[0026] 4. telescopic member; 401. sleeve; 402. fastener; 403. through hole;

[0027] 5. Power parts; 501. Legs; 502. Motor; 503. Blades; 504. Gaskets; 505. Base; 506. Screw; 507. Spherical groove; 508. Spherical protrusion. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0029] In the description of the present invention, it should be noted that if there are terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc., they are based on the orientation or positional relationship shown in the 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, if there are terms such as "first", "second", etc., they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In addition, in the description of the present invention, unless otherwise clearly defined, 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 an indirect connection 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 in combination with specific circumstances.

[0031] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0032] This embodiment relates to a folding mechanism for the arm 2 of a drone, and the overall structure is as follows: Figure 1 and Figure 3As shown, it includes a body 1, an arm 2, a connecting part 3, a telescopic part 4, and a power part 5.

[0033] Among them, there are at least three arms 2, which are circumferentially arranged on the outer circle of the fuselage 1, the connecting part 3 is arranged between the arm 2 and the fuselage 1, driving the arm 2 to rotate, the telescopic part 4 is telescopically arranged on the arm 2, and the power part 5 is fixedly arranged on the telescopic part 4 to drive the fuselage 1 to fly.

[0034] It is worth mentioning that the arms 2 can be set to three, four, five, etc. according to the size of the fuselage 1, and are evenly arranged on the side of the fuselage 1. The number of connecting parts 3 is the same as the number of arms 2. One end of the arm 2 is fixedly connected to the connecting part 3, and the other end of the arm 2 is provided with a telescopic part 4. The telescopic part 4 is telescoped on the arm 2, so as to control the length of the arm 2. The connecting part 3 can drive the arm 2 to rotate. When the three arms 2 are rotated to be parallel, the arms 2 are in a folded state. When the three arms 2 are respectively perpendicular to the fuselage 1, the arms 2 are in an unfolded state. The power part 5 is fixedly installed on the end of the telescopic part 4 away from the fuselage 1. The power part 5 moves with the telescopic part 4, so as to realize the telescopic movement of the arm 2. The rotation of the arm 2 and the telescopic movement of the telescopic part 4 reduce the overall size of the drone.

[0035] Based on the above overall introduction, an exemplary structure of the folding mechanism of the drone arm 2 of this embodiment is as follows: Figure 2 and Figure 3 As shown, the connecting member 3 includes a fixed shaft 301 vertically arranged on the fuselage 1, and a locking block 302 fixedly arranged on the fuselage 1, the machine arm 2 and the fixed shaft 301 are rotatably connected, and the locking block 302 fixes the machine arm 2 through a screw 303. An arc groove 304 is formed on the locking block 302, and the machine arm 2 is clamped in the arc groove 304.

[0036] It should be noted that the purpose of vertically arranging the fixed axis 301 on the fuselage 1 is to ensure that the fuselage 1 can rotate along the axis of the fixed axis 301, that is, to rotate along the horizontal direction of the fuselage 1, to ensure that the width of the UAV becomes smaller, and the locking block 302 is located on one side of the arm 2, and the locking block 302 is fastened to the fuselage 1 by a screw 303. When the arm 2 is unfolded, it is clamped on the locking block 302 to ensure that the arm 2 can be fixed after unfolding to avoid the problem of shaking of the arm 2. The screw 303 can fix the locking block 302 and the arm 2 together to improve the connection strength between the locking block 302 and the arm 2. The arc-shaped groove 304 on the locking block 302 is the same shape as the arm 2. The arm 2 is inserted into the arc-shaped groove 304 to further prevent the arm 2 from shaking, thereby improving the stability of the arm 2 when the UAV is flying.

[0037] As a preferred embodiment, Figure 4As shown, in this embodiment, the telescopic member 4 includes a sleeve 401 telescopically arranged on the arm 2, and a fastener 402 for locking the sleeve 401, and through holes 403 are respectively opened on the sleeve 401 and the arm 2, the fastener 402 is passed through the through hole 403, and the power member 5 is fixedly arranged on the sleeve 401.

[0038] It should be noted that the sleeve 401 is sleeved on the arm 2 and slides on the arm 2. When the through hole 403 on the sleeve 401 coincides with the through hole 403 on the arm 2, the fastener 402 is inserted into the through hole 403. The fastener 402 can fasten the arm 2 and the sleeve 401. The fastener 402 can be a bolt and a nut. The bolt is inserted into the through hole 403, and the nut is screwed on the bolt. The nut and the bolt fasten the sleeve 401 to the arm 2. The fastening of the fastener 402 can prevent the sleeve 401 from shaking on the arm 2, thereby improving the stability of the sleeve 401. The fastener 402 can also be only a bolt. The through hole 403 is opened as a threaded hole. The bolt is directly screwed to the threaded hole, which can also fasten the sleeve 401 to the arm 2 to prevent shaking.

[0039] As a preferred embodiment, Figure 5 As shown, in this embodiment, the power member 5 includes a leg 501 fixedly arranged on the sleeve 401, a motor 502 fixedly arranged on the leg 501, and a fan blade 503 fixedly arranged at the driving end of the motor 502. There are at least three fan blades 503, and a gasket 504 is fixedly arranged at one end of the fan blade 503. The three gaskets 504 are stacked and inserted at the driving end of the motor 502.

[0040] It should be noted that the support leg 501 is perpendicular to the ground, and the motor 502 is a control motor 502 commonly used in drones. It will not be repeated here. The motor 502 is fixedly mounted on the support leg 501, and the driving end of the motor 502 is vertically upward. The motor 502 drives the fan blades 503 to rotate, thereby realizing the take-off of the drone. A plurality of fan blades 503 can be provided according to the situation. In the present embodiment, three fan blades 503 are provided. The angles of the three fan blades 503 are the same. The gasket 504 can be inserted into the driving end of the motor 502. The gasket 504 can be keyed to the driving end of the motor 502 to ensure that the angles of the three fan blades 503 do not change.

[0041] As a preferred example, Figure 5 and Figure 6 As shown, the driving end of the motor 502 of this embodiment is fixedly provided with a base 505, a screw rod 506 is screwed in the middle of the base 505, and three washers 504 are inserted on the screw rod 506. The upper and lower end surfaces of the three washers 504 are respectively provided with a spherical groove 507 and a spherical protrusion 508, and the spherical protrusion 508 is clamped in the spherical groove 507.

[0042] Specifically, the base 505 is fixedly connected to the driving end of the motor 502, the motor 502 drives the base 505 to rotate, thereby driving the fan blades 503 to rotate, the gasket 504 is inserted on the screw 506 and connected with the screw 506 key, the screw 506 and the base 505 are screwed, and the three gaskets 504 are tightened between the base 505 and the screw 506, and an anti-loosening washer is placed between the screw 506 and the gasket 504 to prevent the screw 506 from loosening. The anti-loosening screw 506 can also be used directly, and the two adjacent gaskets 504 The spherical groove 507 and the spherical protrusion 508 are engaged with each other, and three spherical grooves 507 and three spherical protrusions 508 are evenly arranged around the circumference to ensure that the gasket 504 can still be engaged after rotation. The spherical groove 507 and the spherical protrusion 508 can increase the friction between two adjacent gaskets 504 to prevent the angle of the fan blade 503 from changing when the fan blade 503 rotates. In conjunction with the tightening of the screw 506, the spherical groove 507 and the spherical protrusion 508 can be ensured to be always engaged after unfolding or folding, thereby improving the connection strength between the three fan blades 503.

[0043] The folding mechanism of the drone arm 2 in this embodiment ensures that the arm 2 can be folded and the diameter of the drone in the width direction can be reduced through the matching arrangement of the connecting member 3 and the arm 2. The arm 2 can be telescopic and the diameter of the drone in the length direction can be reduced through the matching arrangement of the telescopic member 4 and the arm 2. The size of the entire drone can be reduced through the matching arrangement of the connecting member 3 and the telescopic member 4. The blades 503 can be folded and overlapped with the arm 2 through the matching arrangement of the three blades 503 and the screw 506, so that the drone becomes smaller after being folded. The clamping strength of the three blades 503 is ensured through the matching arrangement of the spherical groove 507 and the spherical protrusion 508, so as to avoid changes in the angle between the three wings during use and ensure flight stability.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drone arm folding mechanism, characterized in that: include: Body (1); At least three machine arms (2) are provided and are circumferentially arranged on the outer circle of the machine body (1); A connecting member (3) is arranged between the machine arm (2) and the machine body (1) and drives the machine arm (2) to rotate; A telescopic member (4) telescopically arranged on the machine arm (2); A power member (5) is fixedly arranged on the telescopic member (4) and drives the fuselage (1) to fly.

2. The drone arm folding mechanism according to claim 1, characterized in that: The connecting member (3) comprises a fixed shaft (301) vertically arranged on the fuselage (1), and a locking block (302) fixedly arranged on the fuselage (1); the machine arm (2) and the fixed shaft (301) are rotatably connected, and the locking block (302) fastens the machine arm (2) via a screw (303).

3. The drone arm folding mechanism according to claim 2, characterized in that: The locking block (302) is provided with an arc-shaped groove (304), and the machine arm (2) is clamped in the arc-shaped groove (304).

4. The drone arm folding mechanism according to claim 1, characterized in that: The telescopic member (4) comprises a sleeve (401) telescopically arranged on the machine arm (2), and a fastener (402) for locking the sleeve (401); through holes (403) are respectively provided on the sleeve (401) and the machine arm (2); the fastener (402) is inserted into the through holes (403); and the power member (5) is fixedly arranged on the sleeve (401).

5. The drone arm folding mechanism according to claim 4, characterized in that: The power member (5) comprises a support leg (501) fixedly arranged on the sleeve (401), a motor (502) fixedly arranged on the support leg (501), and a fan blade (503) fixedly arranged on the driving end of the motor (502).

6. The drone arm folding mechanism according to claim 5, characterized in that: At least three fan blades (503) are provided, a gasket (504) is fixedly provided at one end of the fan blade (503), and the three gaskets (504) are stacked and inserted at the driving end of the motor (502).

7. The drone arm folding mechanism according to claim 6, characterized in that: A base (505) is fixedly provided at the driving end of the motor (502), a screw rod (506) is screwed in the middle of the base (505), and the three washers (504) are inserted into the screw rod (506).

8. The drone arm folding mechanism according to claim 6, characterized in that: The upper and lower end surfaces of the three gaskets (504) are respectively provided with a spherical groove (507) and a spherical protrusion (508), and the spherical protrusion (508) is snap-fitted into the spherical groove (507).

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