Bidirectional self-locking folding mechanism of unmanned aerial vehicle and unmanned aerial vehicle

Abstract

The utility model discloses a bidirectional self-locking folding mechanism of an unmanned aerial vehicle and the unmanned aerial vehicle. The bidirectional self-locking folding mechanism comprises a first connecting seat, a second connecting seat, a sliding rod, a guide rod and an elastic piece, two first connecting plates are fixed on the first connecting seat in parallel, and a first limiting groove and a second limiting groove are formed in each first connecting plate; two second connecting plates are fixed on the second connecting seat in parallel, the two second connecting plates are rotationally connected with the two first connecting plates, and the two first connecting plates are located between the two second connecting plates; a sliding hole is formed in the second connecting plate; the two ends of the sliding rod are installed in the two sliding holes. The guide rod penetrates through and extends out of the second connecting seat to be fixedly connected with the sliding rod; the guide rod is sleeved with the elastic piece, one end of the elastic piece abuts against the sliding rod, the other end of the elastic piece abuts against the second connecting base, and the elastic piece is in a compressed state; when the vehicle arms are in an unfolded state, the first limiting grooves are matched with the sliding rods; and when the vehicle arms are in a folded state, the second limiting grooves are matched with the sliding rods. According to the utility model, the arms can be prevented from loosening after being unfolded or folded.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicles, in particular to a two-way self-locking folding mechanism for an unmanned aerial vehicle and an unmanned aerial vehicle. Background Art

[0002] The multi-rotor unmanned aerial vehicle is a newly emerging vertical take-off and landing aircraft in recent years, with the characteristics of simple structure, easy operation, strong maneuverability, wide applicability, etc., and is widely used in industries such as agricultural and forestry plant protection, power line inspection, geological mapping, express delivery, fire rescue, disaster exploration, etc. The industrial multi-rotor unmanned aerial vehicle has strong environmental adaptability, high reliability, and accurate function positioning, making the industrial multi-rotor unmanned aerial vehicle play an important role in modern industrial production activities and having irreplaceability.

[0003] During the actual operation process, the industrial multi-rotor unmanned aerial vehicle needs to carry external operation equipment, so large wheelbase and high load models are often used. At present, the wheelbase of industrial multi-rotor unmanned aerial vehicles is generally above 1.2m, and the empty machine weight exceeds 10kg. The arm folding parts of the machine mostly adopt connection methods such as pins and buckles. The unfolding and folding efficiency of the unmanned aerial vehicle is low, the time consumption is long, and the fastening of the arm is poor and easy to loosen. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a two-way self-locking folding mechanism for an unmanned aerial vehicle and an unmanned aerial vehicle to solve the deficiencies in the prior art. It can achieve rapid folding, shorten the unfolding and folding time of the unmanned aerial vehicle, strengthen the fastening of the arm, not easy to loosen, and improve the operation efficiency of the unmanned aerial vehicle; it can achieve two-way locking of the unmanned aerial vehicle arm, that is, locking in the folded state and the unfolded state, achieving the effect of two-way locking. Whether in the unfolded state or the folded state, the arm is locked, solving the risk that the arm is easy to shake and damage equipment such as propellers and motors during the transportation of the aircraft.

[0005] The utility model provides a two-way self-locking folding mechanism for an unmanned aerial vehicle, including a first connection seat fixedly connected to one end of the arm, a second connection seat fixedly connected to the airframe, a slide rod, a guide rod and an elastic member;

[0006] Two first connection plates are fixedly arranged in parallel on the first connection seat, and a first limit groove and a second limit groove are formed on the first connection plate;

[0007] Two second connection plates are fixedly arranged in parallel on the second connection seat. The two second connection plates are rotatably connected to the two first connection plates, and the two first connection plates are located between the two second connection plates; a slide hole is formed on the second connection plate;

[0008] Both ends of the slide rod are installed in the two slide holes;

[0009] The guiding rod penetrates through and extends out of the second connecting seat and is fixedly connected to the sliding rod;

[0010] The elastic member is sleeved on the guiding rod. One end of the elastic member abuts against the sliding rod and the other end abuts against the second connecting seat. The elastic member is in a compressed state;

[0011] When the machine arm is in the unfolded state, the first limiting groove cooperates with the sliding rod; when the machine arm is in the folded state, the second limiting groove cooperates with the sliding rod.

[0012] For the two-way self-locking folding mechanism of the unmanned aerial vehicle as described above, preferably, a first rotating shaft is fixedly installed between the two first connecting plates. Both ends of the first rotating shaft extend out of the corresponding first connecting plates and are rotatably connected to the second connecting plates on the corresponding sides.

[0013] For the two-way self-locking folding mechanism of the unmanned aerial vehicle as described above, preferably, the sliding hole is an oval hole; the oval hole has a first end and a second end. When the sliding rod is located at the first end of the oval hole, the first connecting plate can rotate relative to the second connecting plate; when the sliding rod is located at the second end of the oval hole, the sliding rod cooperates with the first limiting groove or the second limiting groove.

[0014] For the two-way self-locking folding mechanism of the unmanned aerial vehicle as described above, preferably, both the first limiting groove and the second limiting groove are through grooves.

[0015] For the two-way self-locking folding mechanism of the unmanned aerial vehicle as described above, preferably, a connecting rod is fixedly installed between the two second connecting plates.

[0016] For the two-way self-locking folding mechanism of the unmanned aerial vehicle as described above, preferably, the first connecting seat is a connecting cylinder. The connecting cylinder is sleeved on the machine arm and is fixedly connected to the machine arm by screws; the first connecting plate is fixedly installed at one end of the connecting cylinder away from the machine arm.

[0017] For the two-way self-locking folding mechanism of the unmanned aerial vehicle as described above, preferably, the second connecting seat is a mounting plate. The mounting plate is fixedly connected to the airframe by bolts.

[0018] The present utility model provides an unmanned aerial vehicle, which includes the two-way self-locking folding mechanism of the unmanned aerial vehicle as described above.

[0019] Compared with the prior art, the present utility model has the following beneficial effects:

[0020] When the utility model cooperates with the first limiting groove and the second limiting groove through the sliding rod, it can play a locking role under the action of the elastic member, which can prevent the arm from loosening after unfolding or folding; it shortens the unfolding and folding time of the drone, makes the arm firmer and not easy to loosen, and improves the working life and operation efficiency of the drone. The two-way locking of the drone arm is realized through the first limiting groove and the second limiting groove, that is, it is locked in the folded state and the unfolded state, achieving the effect of two-way locking; only when the slider is pushed can the state of the drone be switched between folding and unfolding. Whether in the unfolded state or the folded state, the arm is locked, solving the risk that the arm is easy to shake and damage equipment such as the propeller motor during the transportation of the aircraft. Description of the Drawings

[0021] Figure 1 Figure 6 is a schematic structural diagram of the two-way self-locking folding mechanism of the drone proposed by the utility model in the state where the arm is folded and retracted;

[0022] Figure 2 is Figure 1 a schematic structural diagram from another perspective;

[0023] Figure 3 Figure 16 is a schematic structural diagram of the two-way self-locking folding mechanism of the drone proposed by the utility model in the state where the arm is unfolded;

[0024] Figure 4 Figure 20 is a schematic installation structure diagram of the second connecting seat, the second connecting plate, the sliding rod and the guiding rod;

[0025] Figure 5 is Figure 4 a schematic structural diagram from another perspective;

[0026] Figure 6 Figure 30 is a schematic installation structure diagram of the first connecting seat, the first connecting plate and the first rotating shaft.

[0027] Description of the Reference Numerals:

[0028] 1 - Arm, 2 - First connecting seat, 3 - Second connecting seat, 4 - Sliding rod, 5 - Guiding rod, 6 - Elastic member, 7 - First connecting plate, 8 - Second connecting plate, 9 - First rotating shaft, 10 - Connecting rod, 71 - First limiting groove, 72 - Second limiting groove, 81 - Sliding hole. Detailed Embodiment

[0029] The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and should not be construed as limiting the utility model.

[0030] Embodiment of the utility model: As Figures 1 - 6As shown in the figure, the present utility model proposes a two-way self-locking folding mechanism for an unmanned aerial vehicle, which includes a first connecting seat 2, a second connecting seat 3, a sliding rod 4, a guiding rod 5 and an elastic member 6. The first connecting seat 2 is fixedly connected to one end of the arm 1, and the second connecting seat 3 is fixedly connected to the airframe. The specific fixing method can be welding, screw, bolt connection, etc.

[0031] Two first connecting plates 7 are fixedly arranged in parallel on the first connecting seat 2. A first limiting groove 71 and a second limiting groove 72 are formed on the first connecting plate 7. Both the first limiting groove 71 and the second limiting groove 72 are through grooves. To reduce the weight, a weight-reducing hole can be formed on the first connecting plate 7.

[0032] Two second connecting plates 8 are fixedly arranged in parallel on the second connecting seat 3. The two second connecting plates 8 are rotatably connected to the two first connecting plates 7, and the two first connecting plates 7 are located between the two second connecting plates 8. A sliding hole 81 is formed on the second connecting plate 8.

[0033] Both ends of the sliding rod 4 are installed in the two sliding holes 81. The sliding rod 4 can move along the sliding hole 81. As an implementation method, the sliding hole 81 is an oval hole, and the oval hole has a first end and a second end. Here, the first end and the second end refer to Figure 5 both ends of the oval hole along the Y direction. When the sliding rod 4 is located at the first end of the oval hole, the first connecting plate 7 can rotate relative to the second connecting plate 8. The purpose of such a setting is to prevent the sliding rod 4 from being blocked when the first connecting plate 7 rotates relative to the second connecting plate 8. When the sliding rod 4 is located at the second end of the oval hole, the sliding rod 4 cooperates with the first limiting groove 71 or the second limiting groove 72.

[0034] The guiding rod 5 penetrates and extends out of the second connecting seat 3 and is fixedly connected to the sliding rod 4. The guiding rod 5 is slidably connected to the second connecting seat 3. By pulling the guiding rod 5, the sliding rod 4 can be driven to move along the sliding hole 81.

[0035] The elastic member 6 is sleeved on the guiding rod 5. One end of the elastic member 6 abuts against the sliding rod 4 and the other end abuts against the second connecting seat 3. The elastic member 6 is in a compressed state. The elastic member 6 can be a spring.

[0036] When the arm 1 is in the unfolded state, the first limiting groove 71 cooperates with the sliding rod 4. When the arm 1 is in the folded state, the second limiting groove 72 cooperates with the sliding rod 4. When the sliding rod 4 cooperates with the first limiting groove 71 and the second limiting groove 72, it can play a locking role under the action of the elastic member 6, and can prevent the arm 1 from loosening. And the folding / unfolding efficiency is high.

[0037] Specifically, when the machine arm 1 switches from the deployed state to the folded state, only need to pull the guide rod 5 to move the guide rod 5 from the second end to the first end of the kidney-shaped hole. When it moves to the first end, pull the machine arm 1 with an external force to rotate the first connecting plate 7 relative to the second connecting plate 8. Until the folding is in place, release the guide rod 5. Under the elastic action of the elastic member 6, the sliding rod 4 resets and abuts against the second limiting groove 72 to form a locking mechanism with the second limiting groove 72 to limit the position of the machine arm 1, so that the machine arm 1 is kept in the folded state, and the folding of the machine arm 1 is completed.

[0038] Specifically, when the machine arm 1 switches from the folded state to the deployed state, only need to pull the guide rod 5 to move the guide rod 5 from the second end to the first end of the kidney-shaped hole. When it moves to the first end, pull the machine arm 1 with an external force to rotate the first connecting plate 7 relative to the second connecting plate 8. Until the deployment is in place, release the guide rod 5. Under the elastic action of the elastic member 6, the sliding rod 4 resets and abuts against the second limiting groove 72 to form a locking mechanism with the second limiting groove 72 to limit the position of the machine arm 1, so that the machine arm 1 is kept in the deployed state, and the deployment of the machine arm 1 is completed.

[0039] As an implementation manner, a first rotating shaft 9 is fixedly installed between the two first connecting plates 7. Both ends of the first rotating shaft 9 extend out of the corresponding first connecting plates 7 and are rotatably connected to the corresponding second connecting plates 8 on the corresponding side. By fixedly connecting the first rotating shaft 9 with the two first connecting plates 7, the two first connecting plates 7 can be supported, and the stress intensity of the two first connecting plates 7 can be improved.

[0040] A connecting rod 10 is fixedly installed between the two second connecting plates 8. The function of the connecting rod 10 is to support the two second connecting plates 8. The connecting rod 10 is located at a position where it does not interfere with the state switching of the machine arm 1.

[0041] The first connecting seat 2 is a connecting cylinder. The connecting cylinder is sleeved on the machine arm 1 and is fixedly connected to the machine arm 1 by screws, which can increase the contact area between the first connecting seat 2 and the machine arm 1 and improve the connection firmness between the first connecting seat 2 and the machine arm 1. The first connecting plate 7 is fixedly installed at one end of the connecting cylinder away from the machine arm 1. The second connecting seat 3 is a mounting plate, and the mounting plate is fixedly connected to the machine body by bolts.

[0042] In some implementation manners, a torsion spring can be arranged on the first rotating shaft 9. Both ends of the torsion spring are respectively connected to the first connecting plate 7 and the second connecting plate 8. When the torsion spring is in the natural state, the first connecting plate 7 is located at a position between the folded state and the deployed state. In this way, the torque provided by the torsion spring can be used to further prevent the machine arm from loosening in the folded state or the deployed state.

[0043] The present utility model also proposes a drone, including the above-mentioned two-way self-locking folding mechanism for the drone.

[0044] The structure, features and effects of the present utility model have been described in detail based on the embodiments shown in the drawings. The above is only the preferred embodiment of the present utility model, but the present utility model is not limited to the scope of implementation shown in the drawings. Any changes made according to the concept of the present utility model, or equivalent embodiments modified into equivalent changes, should still be within the protection scope of the present utility model as long as they do not exceed the spirit covered by the description and the drawings.

Claims

1. A two-way self-locking folding mechanism for a drone, characterized by: It comprises a first connection seat (2) fixedly connected to one end of the machine arm (1), a second connection seat (3) fixedly connected to the machine body, a sliding rod (4), a guide rod (5) and an elastic member (6); Two first connecting plates (7) are fixed in parallel on the first connecting seat (2), and the first connecting plates (7) are provided with a first limiting groove (71) and a second limiting groove (72); Two second connecting plates (8) are fixed in parallel on the second connecting seat (3), the two second connecting plates (8) are rotatably connected to the two first connecting plates (7), and the two first connecting plates (7) are located between the two second connecting plates (8); a sliding hole (81) is provided on the second connecting plate (8); The two ends of the sliding rod (4) are installed in the two sliding holes (81); The guide rod (5) penetrates through and extends out of the second connecting seat (3) to be fixedly connected to the sliding rod (4); The elastic member (6) is sleeved on the guide rod (5), one end of the elastic member (6) abuts against the slide rod (4) and the other end abuts against the second connecting seat (3), and the elastic member (6) is in a compressed state; When the machine arm (1) is in an extended state, the first limiting groove (71) cooperates with the slide bar (4); when the machine arm (1) is in a folded state, the second limiting groove (72) cooperates with the slide bar (4).

2. The two-way self-locking folding mechanism of the drone according to claim 1 is characterized by: A first rotating shaft (9) is fixedly mounted between the two first connecting plates (7), and corresponding first connecting plates (7) extend from both ends of the first rotating shaft (9) to be rotatably connected to the second connecting plates (8) on the corresponding sides.

3. The two-way self-locking folding mechanism of the drone according to claim 1 is characterized by: The sliding hole (81) is a waist-shaped hole; the waist-shaped hole has a first end and a second end; when the sliding rod (4) is located at the first end of the waist-shaped hole, the first connecting plate (7) can rotate relative to the second connecting plate (8); when the sliding rod (4) is located at the second end of the waist-shaped hole, the sliding rod (4) cooperates with the first limiting groove (71) or the second limiting groove (72).

4. The two-way self-locking folding mechanism of the drone according to claim 3 is characterized by: The first limiting groove (71) and the second limiting groove (72) are both through grooves.

5. The two-way self-locking folding mechanism of the drone according to claim 1 is characterized by: A connecting rod (10) is fixedly mounted between the two second connecting plates (8).

6. The UAV bidirectional self-locking folding mechanism according to claim 1 is characterized in that: The first connecting seat (2) is a connecting tube, which is sleeved on the machine arm (1) and fixedly connected to the machine arm (1) by means of screws; the first connecting plate (7) is fixedly mounted on an end of the connecting tube away from the machine arm (1).

7. The UAV bidirectional self-locking folding mechanism according to claim 1 is characterized in that: The second connecting seat (3) is a mounting plate, and the mounting plate is fixedly connected to the machine body by bolts.

8. An unmanned aerial vehicle, characterized in that: It comprises a bidirectional self-locking folding mechanism for a drone as described in any one of claims 1 to 7.

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