WO2020000239A1 - Foldable propeller and unmanned aerial vehicle - Google Patents

Abstract

A foldable propeller, comprising a first blade (20), a second blade (30), a mounting seat (10), and an anti-swing member. The mounting seat (10) is rotatably connected to a driving mechanism of an unmanned aerial vehicle; one end of the first blade (20) and one end of the second blade (30) are rotatably connected onto the mounting seat (10); the driving mechanism drives the mounting seat (10) to rotate, so as to drive the first blade (20) and the second blade (30) to rotate around a rotating center of the mounting seat (10); the anti-swing member is used for applying pressure or tension to the first blade (20) and the second blade (30), so that a connection relationship is established between the first blade (20) and the second blade (30), and positions of the first blade (20) and the second blade (30) are limited. Also disclosed is an unmanned aerial vehicle. A force relationship can be established between the first blade (20) and the second blade (30) by providing the anti-swing member, the swing of the first blade (20) or the second blade (30) is weakened or even eliminated, so that the flight of the unmanned aerial vehicle is more stable.

Description

Foldable propeller and unmanned aerial vehicle Technical field

The present application relates to the technical field of unmanned aerial vehicles, in particular to a foldable propeller and an unmanned aerial vehicle.

Background technique

With the development of the UAV industry, UAVs are moving towards miniaturization, portability, and autonomous assembly. For example, blades as power actuators have also evolved from traditional integrated structures to foldable forms. . The traditional blade structure includes two blades that are rigidly connected together. The middle of the two blades is mounted on the propeller drive shaft. The foldable blade structure is two separate blades. There is no connection between them, and each blade is connected to the mounting seat connected to the drive shaft.

When the above-mentioned blade structure is used, especially during the acceleration and deceleration rotation, two separate blades rotate under the driving of the drive shaft, and have a swing centered on a connection point between the blade and the mounting portion. It brings great challenges to the vibration reduction of unmanned aerial vehicles, and will have adverse effects on the inertial navigation system, gimbal system, and even the structural system of unmanned aerial vehicles.

Summary of the invention

In order to solve the above technical problems, a foldable propeller is provided, and anti-swinging members are provided to reduce or even eliminate the swing of the blades.

In a first aspect, an embodiment of the present application provides a foldable propeller, including a first blade, a second blade, a mounting seat, and an anti-swing member. The mounting seat is rotatably connected to a driving mechanism of an unmanned aerial vehicle. One end of the paddle and the second paddle are rotatably connected to the mounting base, and the driving mechanism drives the mounting base to rotate, driving the first paddle and the second paddle around the mounting base. The center of rotation of the rotation is turned, and the anti-swaying member is connected between the first and second paddles, or between the first and the mounting pads, and connected to the second Between the paddle and the mounting seat, or the anti-swaying members are at least two and are respectively disposed on the first and second paddles, and at least two of the anti-swaying members are mutually Acting force, the anti-swaying component is used to apply pressure or tension to the first and second blades, so that the first and second blades establish a connection relationship so that the The first blade and the second blade are defined in position.

Wherein, one end of the first paddle is provided with a first mounting portion, and one end of the second paddle is provided with a second mounting portion, and the first mounting portion and the second mounting portion pass through a first rotating shaft, respectively. And the second rotating shaft is rotatably connected to the mounting base, the interval between the first mounting portion and the second mounting portion is oppositely arranged, and the swing prevention member is used for mounting the first mounting portion and the second mounting portion The portion applies pressure or tension such that the first mounting portion and the second mounting portion are defined in position.

The first mounting portion includes a first surface, a second surface, and a third surface disposed away from the second surface, and the first surface is connected between the second surface and the third surface. Meanwhile, the second mounting portion includes a fourth surface, a fifth surface, and a sixth surface disposed away from the fifth surface, the first surface and the fourth surface are opposite to each other, and the second surface and The fifth surface is located on a first side opposite to the mounting base, the third surface and the sixth surface are located on a second side opposite to the mounting base, and the first side and the second side are opposite to each other It is arranged on the back, and the anti-sway member is connected to the first surface and the fourth surface, or is connected to the second surface and the fifth surface, or is connected to the third surface and the sixth surface. And is used to define the positions of the first mounting portion and the second mounting portion.

In one embodiment, the first mounting portion and the second mounting portion each include a surface facing away from the mounting seat, and the swing prevention member is disposed on the back of the first mounting portion and the second mounting portion. Toward the surface of the mounting base, and avoiding the first rotating shaft and the second rotating shaft.

In one embodiment, the anti-swaying member includes a first plywood and a second plywood, the first plywood is connected to the second surface and the fifth surface, and the second plywood is connected to the third surface and On the sixth surface so that the first mounting portion and the second mounting portion are defined in position.

In one embodiment, the anti-swaying member includes a stopper, and the stopper is disposed between the first mounting portion and the second mounting portion and resists the first surface and the fourth surface. So that the first mounting portion and the second mounting portion are defined in position.

Wherein, in a direction perpendicular to the extension direction of the first and second paddles, the size of the stopper is not smaller than the size of the first surface and the fourth surface.

In one embodiment, a first groove is provided on the first surface, and a second groove is provided on the fourth surface. The first end of the swing prevention member extends into the first groove. The second end of the anti-swing member extends away from the first end into the second groove to abut the first mounting portion and the second mounting portion, so that the first mounting portion and the The second mounting portion is defined in position.

Wherein, the first groove and the second groove are opposite to each other, the opening of the first groove faces the fourth surface of the second mounting portion, and the opening surface of the second groove For the first surface of the first mounting portion, the first groove is provided in a middle portion of the first surface, and the second groove is provided in a middle portion of the fourth surface.

The first groove penetrates the upper and lower surfaces of the first mounting portion, and the second groove penetrates the upper and lower surfaces of the second groove.

Wherein, the first end and the second end of the anti-swaying member are disposed opposite to each other, and the shapes of the first end and the second end respectively correspond to the first groove and the second groove So that the first end fits into the inner wall of the first groove after protruding into the first groove, and the second end fits into the second groove after protruding into the second groove Together.

Wherein, the anti-swaying member has a “T” shape, and further includes a first side and a second side disposed opposite to each other, the first end protruding outward from the first side, and the second end protruding from The second side surface protrudes outward, the first side surface is used for abutting with the first surface, and the second side surface is used for abutting with the fourth surface.

In an embodiment, the anti-swaying member includes a main body, a first extending portion, a second extending portion, a third extending portion, and a fourth extending portion extending from the main body, the first extending portion and the first extending portion Three extensions are enclosed with the main body to form a first receiving groove, and the second and fourth extensions are enclosed with the main body to form a second receiving groove. The first receiving groove and the first receiving groove The opening directions of the two receiving grooves are opposite. The first receiving groove is used to receive the first mounting portion, the second receiving groove is used to receive the second mounting portion, and the inner walls of the first receiving groove are respectively attached The first surface, the second surface, and the third surface are combined, and the inner walls of the second receiving groove are respectively attached to the fourth surface, the fifth surface, and the sixth surface, so that The first mounting portion and the second mounting portion are defined in positions.

In one embodiment, the anti-swaying member includes a first magnet and a second magnet, the first magnet is mounted on the first surface, the second magnet is mounted on the second surface, and the first An attractive or repulsive force between a magnet and the second magnet causes the first mounting portion and the second mounting portion to be limited in position.

The anti-swaying piece is detachably connected to the first and second paddles.

In a second aspect, an embodiment of the present application further provides an unmanned aerial vehicle, including the foldable propeller according to any one of the various embodiments of the first aspect.

An embodiment of the present application provides a foldable propeller, which is provided with an anti-swaying member to reduce or even eliminate a blade swing. Specifically, by providing an anti-swaying member, a force relationship can be established between the first and second blades. The position of the first and second blades can be limited, and the independent rotational connection relationship between the first and second blades and the mount can be changed to establish a connection relationship between the first and second blades , Forming a whole, which can reduce or even eliminate the swing of the first or second blade, making the UAV flight more stable.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a foldable propeller provided by an embodiment, and an anti-swing member is not shown in the figure.

FIG. 2 is a schematic structural diagram of a foldable propeller according to an embodiment.

FIG. 3 is a schematic structural diagram of a foldable propeller according to an embodiment.

FIG. 4 is a schematic structural diagram of a foldable propeller according to an embodiment, and an anti-swing member is not shown in the figure.

FIG. 5 is a schematic structural diagram of a foldable propeller according to an embodiment.

FIG. 6 is a schematic structural diagram of an anti-swing member according to an embodiment.

FIG. 7 is a schematic structural diagram of a foldable propeller provided by an embodiment.

FIG. 8 is a schematic structural diagram of an anti-swing member according to an embodiment.

FIG. 9 is a schematic structural diagram of a foldable propeller according to an embodiment.

FIG. 10 is a schematic structural diagram of an anti-swing member according to an embodiment.

FIG. 11 is a schematic structural diagram of a foldable propeller according to an embodiment.

Specific embodiment

An embodiment of the present application provides an unmanned aerial vehicle, including a foldable propeller provided by the embodiment of the present application. During the rotation of the foldable propeller, due to the effect of the anti-swing, the blade swing can be weakened or even eliminated, which makes the propeller run more smoothly, reduces the pressure of the UAV's shock absorption system, and improves reliability. The propellers of the unmanned aerial vehicle of the present application may have a structure of 2 rotors, 4 rotors, 6 rotors, 8 rotors and the like. When no flight is required, each blade can be folded to facilitate storage and packaging.

Please refer to FIG. 1, an embodiment of the present application provides a foldable propeller, including a first blade 20, a second blade 30, and a mounting base 10, which is rotatably connected to a driving mechanism of an unmanned aerial vehicle (not shown in FIG. (Shown), the driving mechanism drives the mounting base 10 to rotate, driving the first paddle 20 and the second paddle 30 to rotate around the rotation center of the mounting base 10.

The foldable propeller according to the embodiment of the present application further includes an anti-swing element connected between the first and second blades 20 and 30; or connected between the first and second blades 20 and 30 Between the mounting pads 10 and between the second paddle 30 and the mounting pad 10; or at least two anti-swaying members are respectively provided on the first paddle 20 and the second paddle 30, and at least There is an interaction force between the two anti-sway pieces, and the anti-sway pieces are used to apply pressure or tension to the first and second blades 20 and 30, so that the first and second blades 20 and 30 The second paddle 30 establishes a connection relationship so that the first paddle 20 and the second paddle 30 are restricted in position without swinging.

The driving mechanism may be a motor. The center of the mounting base 10 is connected to the output shaft of the motor. The output shaft of the motor may be vertically connected to the side of the mounting base 10 facing away from the first and second blades 20 and 30. The surface, that is, the output shaft of the motor is perpendicular to the direction of the paper surface. The rotation of the motor drives the mounting base 10 to rotate, so that the first and second blades 20 and 30 rotate, and the direction of rotation is between the first and second blades 20 and 30. In the plane of extension, that is, the rotation of the first and second blades 20 and 30 is always in the plane of the paper surface.

The rotational connection between the first paddle 20 and the mounting base 10 can be realized through the first rotating shaft 41, and the rotational connection between the second paddle 30 and the mounting base 10 can be realized through the second rotating shaft 42. Specifically, the first rotating shaft 41 may be a structure such as a screw, a rivet, a shaft, or the like. The first blade 20 and the mounting base 10 are provided with corresponding through holes, and the structure such as a screw or a rivet passes through the through hole to pass the first blade 20. Installed on the mounting base 10, the anti-sway member is detachably connected to the first and second paddles 20 and 30. When the first paddle 20 needs to be folded, remove the anti-sway member and move the first paddle 20 and the first paddle 20 The second paddle 30 is folded to the desired position. It can be understood that, in other embodiments, a preset folding position may be set, for example, a snap-in structure is set, and the first and second paddles 20 and 30 are snap-fitted to the snap-in structure so that the first paddle 20 and the The second paddle 30 is also limited in position when folded, which facilitates storage and packaging of the paddle.

The first and second blades 20 and 30 are independently connected to the mounting base 10, and during high-speed rotation, especially during acceleration and deceleration, the first and second blades 20 and 30 are rotated apart. In addition, a swing around the position of the rotational connection point between itself and the mounting base 10 may also occur, resulting in unstable operation of the UAV. Therefore, the embodiment of the present application provides an anti-swaying member to reduce or even eliminate such a swing. Specifically, by providing the anti-swaying member, a force relationship can be established between the first and second blades 20 and 30, and the first The positions of the first and second blades 20 and 30 change the independent rotational connection relationship between the first and second blades 20 and 30 and the mounting base 10 to the first and second blades 20 and 30, respectively. A connection relationship is established between them to form a whole, so that the swing of the first blade 20 or the second blade 30 can be weakened or even eliminated, making the UAV flight more stable.

Specifically, after the anti-swaying member is provided, the extending direction of the first paddle 20 and the second paddle 30 is approximately 180 °, and one end of the first paddle 20 is provided with a first mounting portion 21, A second mounting portion 31 is provided at one end of the second paddle 30, and the first mounting portion 21 and the second mounting portion 31 are rotatably connected to the mounting base through a first rotating shaft 41 and a second rotating shaft 42, respectively. 10 on. The first mounting portion 21 and the second mounting portion 31 are spaced apart from each other, and the swing prevention member is used to apply pressure or tension to the first mounting portion 21 and the second mounting portion 31 so that The first mounting portion 21 and the second mounting portion 31 are defined in positions.

The extending directions of the first and second blades 20 and 30 in this embodiment are approximately 180 °, forming two opposite blades. In other embodiments, two other opposite blades may be provided. Its extension direction is also approximately 180 °, forming a structure of propellers such as 4 blades, 6 blades, 8 blades, etc., and anti-swing parts are provided between each opposing two blades, which can achieve the overall weakening. Even eliminate the effect of wobble. Preferably, after the two opposite blades are added, all the blades are evenly distributed within a range of 360 ° around the center of the mounting base 10, for example, in a propeller of a 4-blade structure, the extension of the two additional blades is extended. The angle between the direction and the first and second blades 20 and 30 is 90 °, and so on. The angle between the extension directions of the two adjacent blades of the 6-blade propeller structure is 60 °. The included angle between the extension directions of the two adjacent blades of the 8-blade propeller structure is 45 °.

The first mounting portion 21 is located at one end of the first paddle 20, the second mounting portion 31 is located at one end of the second paddle 30, and the extending direction of the first mounting portion 21 and the second mounting portion 31 is the same as that of the first paddle 20 and The entire second paddle 30 extends in the same direction. The first mounting portion 21 and the second mounting portion 31 are spaced apart from each other, that is, there is a gap between the two. The specific value of the gap is not limited, but the first and second blades 20 and 30 should be folded when When the first mounting portion 21 and the second mounting portion 31 rotate around the first rotating shaft 41 and the second rotating shaft 42 as the center, no interference occurs. One way of folding, the first and second paddles 20 and 30 are rotated to be close together, so that the extending directions of the first and second paddles 20 and 30 are approximately parallel; another way of folding, the first One blade 20 and the second blade 30 are rotated so that the main body part is stacked up and down, and the extending directions of the first blade 20 and the second blade 30 intersect.

The anti-swaying component is provided in a region where the first and second mounting portions 21 and 31 are applied with tensile force or pressure. Compared to the overall force applied to the first and second blades 20 and 30, the anti-swaying component can make the anti-swaying component exert an area. The scope is reduced, so that the size of the anti-swaying part can be reduced, and the structure of the overall propeller is compact.

In one embodiment, the anti-swaying member is one and both ends of the anti-swaying member are detachably connected to the first mounting portion 21 and the second mounting portion 31 respectively, so that when the first and second blades 20 and 30 need to be folded, Remove the anti-sway piece and fold it.

In one embodiment, there are at least two anti-sway pieces connected between the first paddle 20 and the mounting base 10 and between the second paddle 30 and the mounting base 10 to define the first paddle 20 And the position of the second paddle 30, the anti-swaying piece is also a detachable structure. When the first and second paddles 20 and 30 need to be folded, the anti-swaying piece is disassembled and folded.

In one embodiment, at least two anti-sway pieces are provided on the first mounting portion 21 and the second mounting portion 31 respectively, and at least two anti-sway pieces have an interaction force, and the first mounting portion can also be realized. The positions of 21 and the second mounting portion 31 are limited by the urging force. The swing prevention member in this embodiment may be fixedly connected or detachably connected to the first mounting portion 21 and the second mounting portion 31, which will be described in detail in subsequent embodiments.

The first mounting portion 21 includes a first surface B1, a second surface B2, and a third surface B3 disposed away from the second surface B2. The first surface B1 is connected to the second surface B2 and Between the third surfaces B3. The second mounting portion 31 includes a fourth surface B4, a fifth surface B5, and a sixth surface B6 disposed away from the fifth surface B5. The first surface B1 and the fourth surface B4 are opposite to each other. The second surface B2 and the fifth surface B5 are located on a first side opposite to the mounting base 10, and the third surface B3 and the sixth surface B6 are located on a second side opposite to the mounting base 10, The first side and the second side are disposed opposite to each other, and the swing prevention member is connected to the first surface B1 and the fourth surface B4, or connected to the second surface B2 and the fifth surface B5, or connected to the third surface B3 and the sixth surface B6, is used to define the positions of the first mounting portion 21 and the second mounting portion 31.

The first and second paddles 20 and 30 may have the same structure, and the first and second mounting portions 21 and 31 have the same structure, and the first and second paddles 20 and 30 are symmetrically centered. That is, the first blade 20 is rotated 180 ° to completely coincide with the second blade 30. Therefore, the first surface B1 and the fourth surface B4 have the same structure, the second surface B2 and the sixth surface B6 have the same structure, and the third surface B3 Same structure as the fifth surface B5. The above-mentioned first surface B1 to sixth surface B6 may each have a structure such as a flat surface or an arc surface. In order to simplify the structure of the anti-swing member, the anti-swing member in this embodiment is connected to the first surface B1 and the fourth surface B4, or the second surface B2 and the fifth surface B5, or the third surface B3 and the sixth surface B6. The relative position or the position on the same side has a relatively simple structure. Of course, in other embodiments, a connection structure with a relatively more complex structure may also be adopted, such as a scheme of connecting the second surface B2 and the sixth surface B6 or the third surface B3 and the fifth surface B5.

In one embodiment, the first mounting portion 21 and the second mounting portion 31 each include a surface facing away from the mounting base 10, and the anti-swing member can be connected to the surface of the first mounting portion 21 and the second mounting portion 31 facing away from the mounting base 10. . Since the first rotation shaft 41 and the second rotation shaft 42 are also disposed on the surfaces of the first mounting portion 21 and the second mounting portion 31 facing away from the mounting base 10, the swing prevention member should avoid the first rotation shaft 41 and the second rotation shaft 42.

In one embodiment, in addition to being connected to the first mounting portion 21 and the second mounting portion 31, the anti-swaying member can also be connected to the mounting base 10 at the same time. The connection method is also detachable to strengthen the stability of the anti-swaying member. Therefore, the positions of the first mounting portion 21 and the second mounting portion 31 are more stable, and the effect of reducing and eliminating swing is better.

The following provides some preferred anti-swing solutions, it should be understood that the embodiments of the present application are not limited to the following solutions.

In an embodiment, please refer to FIG. 2 and in combination with FIG. 1, the anti-swaying member includes a first clamping plate 51 and a second clamping plate 52, and the first clamping plate 51 is connected to the second surface B2 and the fifth surface B5 In the above, the second clamping plate 52 is connected to the third surface B3 and the sixth surface B6 so that the first mounting portion 21 and the second mounting portion 31 are defined in position.

The first clamping plate 51 is connected to the second surface B2 and the fifth surface B5, and applies a pulling force or a pressure to the first mounting portion 21 and the second mounting portion 31 relative to the first side of the mounting base 10, and then combines the first rotating shaft 41 and the first The two rotating shafts 42 fix the first mounting portion 21 and the second mounting portion 31, so that the first mounting portion 21 and the second mounting portion 31 are defined in position, and a pair of second clamping plates 52 opposite to the first clamping plate 51 are combined. The tensile force or pressure applied by the first mounting portion 21 and the second mounting portion 31 relative to the second side of the mounting base 10 further defines the positions of the first mounting portion 21 and the second mounting portion 31. Simultaneous application of force to the splint 52 causes the first and second blades 20 and 30 to form an integrated stable structure, which can keep the extending direction of the first and second blades 20 and 30 at an included angle of 180 °.

In this embodiment, the structures of the first clamp plate 51 and the second clamp plate 52 may be the same. Taking the first clamp plate 51 as an example, the shape of the first clamp plate 51 may be a flat plate shape and the second surface B2 of the first mounting portion 21. The plane of the second mounting portion 31 and the plane of the fifth surface B5 of the second mounting portion 31 are bonded together. The connection method of the first clamping plate 51 to the second surface B2 and the fifth surface B5 may be bonding, screwing, snapping, etc. At this time, the first clamping plate 51 and the second clamping plate 52 can be removed, and the first rotating shaft 41 and the second rotating shaft 42 can be loosened. In order to enhance the effect of the force of the first splint 51, the size of the first splint 51 in the extending direction of the first and second blades 20 and 30 is larger than the distance between the first and second rotating shafts 41 and 42, so that As a result, the moment of the first clamping plate 51 is larger, and the first mounting portion 21 and the second mounting portion 31 can be provided with a larger pulling force or pressure.

In an embodiment, please refer to FIG. 3 and in combination with FIG. 1, the anti-swaying member includes a stopper 53, which is disposed between the first mounting portion 21 and the second mounting portion 31. The first surface B1 and the fourth surface B4 are abutted, so that the first mounting portion 21 and the second mounting portion 31 are defined.

The stopper 53 is disposed in the gap between the first mounting portion 21 and the second mounting portion 31. The stopper 53 may be a solid overall structure or a hollow frame structure. The stopper 53 is connected to the first surface B1 and the first surface. The four surfaces B4 are bonded together. When the first surface B1 and the fourth surface B4 are flat, the surface of the stopper 53 that abuts the first surface B1 and the fourth surface B4 is also flat. In a direction perpendicular to the extending direction of the first and second paddles 20 and 30, the size of the stopper 53 is not smaller than that of the first surface B1 and the fourth surface B4, so that the stopper 53 can completely cover the first surface B1. And the fourth surface B4 have the largest area of the pressure applied to the first mounting portion 21 and the second mounting portion 31, and the positions on the first surface B1 and the fourth surface B4 are resisted by the stopper 53. By providing the stopper 53, the first and second blades 20 and 30 form an integrated structure, so that the swing of the first and second blades 20 and 30 during rotation is weakened or even disappeared.

In an embodiment, please refer to FIGS. 4 to 8 and in combination with FIG. 1, the first surface B1 is provided with a first groove 22, and the fourth surface B4 is provided with a second groove 32. The first end 541 of the anti-swing member 54 extends into the first groove 22, and the second end 542 of the anti-swing member extends away from the first end 541 into the second groove 32 to resist the The first mounting portion 21 and the second mounting portion 31 are described so that the first mounting portion 21 and the second mounting portion 31 are defined in position.

The first groove 22 and the second groove 32 are opposite to each other. The opening of the first groove 22 faces the fourth surface B4 of the second mounting portion 31. The opening of the second groove 32 faces the first surface of the first mounting portion 21. One surface B1. The first groove 22 is provided in the middle of the first surface B1, that is, the first groove 22 is provided in the middle of the first surface B1 in a direction perpendicular to the extending direction of the first paddle 20, and the second groove 32 is also provided in the fourth Middle of surface B4. The first groove 22 may penetrate the upper and lower surfaces of the first mounting portion 21, that is, the upper and lower surfaces of the first mounting portion 21 perpendicular to the direction of the mounting base 10, and the second groove 32 may also penetrate the upper and lower surfaces of the second mounting portion 31. .

The first end 541 and the second end 542 of the anti-swing member 54 are disposed opposite to each other. The shapes of the first end 541 and the second end 542 correspond to the first groove 22 and the second groove 32, respectively, so that the first end 541 extends into The first groove 22 is completely fitted to the inner wall of the first groove 22, and the second end 542 is completely fitted to the inner wall of the second groove 32 after reaching the second groove 32, so that the anti-swing member 54 and the first The inner walls of the mounting portion 21 and the second mounting portion 32 abut against each other, and the anti-swing member 54 applies pressure to the first mounting portion 21 and the second mounting portion 31, so that the first and second blades 20 and 30 form an integrated structure, so that The swing of the first and second blades 20 and 30 during rotation is weakened or even disappeared.

Please refer to FIG. 5 and FIG. 6. An anti-swing member 54 according to an embodiment is a pin structure. The pin shaft is long and the extending direction is straight.

Please refer to FIG. 7 and FIG. 8. The anti-swing member 54 according to an embodiment has a “ten” structure, and further includes a first side surface 543 and a second side surface 544. The first side surface 543 and the second side surface 544 are opposite to each other. One end 541 protrudes outward from the first side 543, and the second end 542 protrudes outward from the second side 544. After the anti-swing member 54 is installed, the first side 543 is attached to the first surface B1, and the second side 544 and the first The two surfaces B2 are bonded together through the first end 541 and the first groove 22, and the first side 543 and the first surface B1 resist, and the second end 542 and the second groove 32, and the second side 544 and The resistance of the fourth surface B4 strengthens the force exerted by the anti-swing member 54 on the first mounting portion 21 and the second mounting portion 31, and improves the weakening or even elimination of the swing of the first and second blades 20 and 30. effect.

In an embodiment, please refer to FIG. 9 and FIG. 10, and in combination with FIG. 1, the anti-swing member 55 includes a main body 551, a first extending portion 552, a second extending portion 553, and a third portion extending from the main body 551. The extension portion 554 and the fourth extension portion 555, the first extension portion 552 and the third extension portion 554 enclose the body 551 to form a first receiving groove 556, and the second extension portion 553 and the first extension portion 553 The four extending portions 555 surround the main body 551 to form a second receiving groove 557. The opening directions of the first receiving groove 556 and the second receiving groove 557 are opposite. The first receiving groove 556 is configured to receive the first receiving groove 556. The first mounting portion 21 and the second receiving groove 557 are configured to receive the second mounting portion 31. The inner walls of the first receiving groove 556 are respectively attached to the first surface B1, the second surface B2, and The inner surfaces of the third surface B3 and the second receiving groove 557 are respectively attached to the fourth surface B4, the fifth surface B5, and the sixth surface B6, so that the first mounting portion 21 and The second mounting portion 31 is defined in position.

The anti-swaying member 55 may have an I-shape, and the shape of the first receiving groove 556 corresponds to the shape of the first mounting portion 21. The first mounting portion 21 is completely received and fits in the first receiving groove 556. Similarly, the second receiving portion The groove 557 completely accommodates and fits the second mounting portion 31 such that the first surface B1 of the first mounting portion 21 and the fourth surface B4 of the second mounting portion 31 form a resisting structure, and the second surface B2 and the fifth surface B5 Being restricted, the third surface B3 and the sixth surface B6 are restricted. Compared with the solution of providing the stopper 53 in the foregoing embodiment, the second surface B2, the fifth surface B5, and the third surface B3 are added. With the limitation of the sixth surface B6, the effect of weakening or even eliminating the swing of the first and second blades 20 and 30 is enhanced.

In an embodiment, please refer to FIG. 11, the anti-swaying member includes a first magnet 56 and a second magnet 57, the first magnet 56 is mounted on the first surface B1, and the second magnet 57 is mounted on An attractive or repulsive force between the first magnet 56 and the second magnet 57 on the second surface B2 causes the first mounting portion 21 and the second mounting portion 31 to be defined in position.

The first magnet 56 and the second magnet 57 may be provided to protrude from the first surface B1 and the second surface B2, or may be recessed inward from the first surface B1 and the second surface B2, so that the first surface B1 and the second surface B2 A complete surface structure is formed, and a gap between the first mounting portion 21 and the second mounting portion 31 can be maintained. In this embodiment, the first magnet 56 and the second magnet 57 can be fixed on the first mounting portion 21 and the second mounting portion 31. When the first paddle 20 and the second paddle 30 need to be folded, there is no need to disassemble, Save steps.

In one embodiment, the first magnet 56 and the second magnet 57 may also be disposed on surfaces of the first mounting portion 21 and the second mounting portion 31 facing away from the mounting base 10. In another embodiment, the first magnet 56 includes two, and the second magnet 57 also includes two. The second magnets 57 can be respectively disposed on the second surface B2 and the third surface B3 of the first mounting portion 21 and the second mounting portion 31. The fifth surface B5 and the sixth surface B6, or the first surface B1 mounted on the first mounting portion 21 and the surface facing away from the mounting base 10, and the fourth surface B4 and the mounting surface 10 facing away from the second mounting portion 31 s surface.

The foldable propeller and unmanned aerial vehicle provided by the embodiments of the present application have been described in detail above. Specific examples have been used in this document to explain the principles and embodiments of the present application. The description of the above embodiments is only to help understanding. The method of this application and its core ideas; meanwhile, for a person of ordinary skill in the art, according to the ideas of this application, there will be changes in specific embodiments and application scopes. In summary, the content of this description should not Understood as a limitation on this application.

Claims (16)

1. A foldable propeller is characterized in that it comprises a first blade, a second blade, a mounting seat and an anti-swing member, the mounting seat is rotatably connected to a driving mechanism of an unmanned aerial vehicle, the first blade and the One end of the second paddle is rotatably connected to the mounting base, and the driving mechanism drives the mounting base to rotate, driving the first paddle and the second paddle to rotate around a rotation center of the mounting base, The anti-sway member is connected between the first blade and the second blade, or between the first blade and the mounting seat, and between the second blade and the second blade. Between the mounting bases, or the anti-swaying members are at least two and are respectively disposed on the first and second paddles, and there is an interaction force between at least two of the anti-swaying members, the The anti-swing element is used to apply pressure or tension to the first blade and the second blade, so that the first blade and the second blade establish a connection relationship, so that the first blade and the second blade The second paddle is defined in position.
2. The foldable propeller of claim 1, wherein one end of the first blade is provided with a first mounting portion, and one end of the second blade is provided with a second mounting portion, and the first mounting The first mounting portion and the second mounting portion are rotatably connected to the mounting base through a first rotating shaft and a second rotating shaft, respectively. The interval between the first mounting portion and the second mounting portion is opposite to each other, and the anti-swing member is used for Pressure or tension is applied to the first mounting portion and the second mounting portion, so that the first mounting portion and the second mounting portion are defined in position.
3. The foldable propeller according to claim 2, wherein the first mounting portion comprises a first surface, a second surface, and a third surface disposed away from the second surface, and the first surface is connected Between the second surface and the third surface, the second mounting portion includes a fourth surface, a fifth surface, and a sixth surface disposed away from the fifth surface, the first surface and The fourth surface is opposite, the second surface and the fifth surface are located on a first side opposite to the mounting base, and the third surface and the sixth surface are located on a second side opposite to the mounting base The first side and the second side are arranged opposite to each other, and the anti-swing member is connected to the first surface and the fourth surface, or connected to the second surface and the fifth surface, or The third surface and the sixth surface are connected to define positions of the first mounting portion and the second mounting portion.
4. The foldable propeller according to claim 2, wherein each of the first mounting portion and the second mounting portion includes a surface facing away from the mounting seat, and the anti-swaying member is disposed on the first mounting portion. And the second mounting portion face away from the surface of the mounting base, and avoid the first rotation shaft and the second rotation shaft.
5. The foldable propeller of claim 3, wherein the anti-swaying member comprises a first splint and a second splint, the first splint is connected to the second surface and the fifth surface, and the second A splint is connected to the third surface and the sixth surface so that the first mounting portion and the second mounting portion are defined in position.
6. The foldable propeller according to claim 3, wherein the anti-swaying member comprises a stopper, and the stopper is disposed between the first mounting portion and the second mounting portion and resists the The first surface and the fourth surface so that the first mounting portion and the second mounting portion are defined in position.
7. The foldable propeller according to claim 6, characterized in that, in a direction perpendicular to the extension direction of the first and second blades, the size of the stopper is not smaller than that of the first surface and A size of the fourth surface.
8. The foldable propeller according to claim 3, wherein the first surface is provided with a first groove, the fourth surface is provided with a second groove, and the first end of the anti-swing member extends into In the first groove, the second end of the anti-swaying member far from the first end protrudes into the second groove to abut the first mounting portion and the second mounting portion, and The first mounting portion and the second mounting portion are restricted in position.
9. The foldable propeller according to claim 8, wherein the first groove and the second groove are opposite to each other, and an opening of the first groove faces the second mounting portion. A fourth surface, an opening of the second groove faces the first surface of the first mounting portion, the first groove is provided in a middle portion of the first surface, and the second groove is provided In the middle of the fourth surface.
10. The foldable propeller according to claim 8 or 9, wherein the first groove penetrates the upper and lower surfaces of the first mounting portion, and the second groove penetrates the upper and lower surfaces of the second groove. .
11. The foldable propeller according to any one of claims 8 to 10, wherein the first end and the second end of the anti-swing member are disposed opposite to each other, and the first end and the second end The shapes of the ends correspond to the first groove and the second groove, respectively, so that the first end fits into the inner wall of the first groove after protruding into the first groove, and the second The end protrudes into the second groove and fits with the second groove.
12. The foldable propeller according to any one of claims 8 to 11, wherein the anti-swaying member has a "T" shape structure, and further includes a first side and a second side disposed opposite to each other, and the first The end protrudes outward from the first side, the second end protrudes outward from the second side, the first side is used for fitting with the first surface, and the second side is used for contact with The fourth surface is bonded.
13. The foldable propeller according to claim 3, wherein the anti-swaying member comprises a main body, a first extending portion, a second extending portion, a third extending portion, and a fourth extending portion extending from the main body, and The first extension portion and the third extension portion are enclosed with the main body to form a first receiving groove, and the second extension portion and the fourth extension portion are enclosed with the main body to form a second receiving groove. The opening directions of the first receiving groove and the second receiving groove are opposite. The first receiving groove is used to receive the first mounting portion, and the second receiving groove is used to receive the second mounting portion. The inner walls of the first receiving groove are attached to the first surface, the second surface, and the third surface, respectively, and the inner walls of the second receiving groove are attached to the fourth surface and the fifth surface, respectively. And the sixth surface so that the first mounting portion and the second mounting portion are defined in position.
14. The foldable propeller according to claim 3 or 4, wherein the anti-swaying member comprises a first magnet and a second magnet, the first magnet is mounted on the first surface, and the second magnet is mounted On the second surface, an attractive or repulsive force between the first magnet and the second magnet causes the first mounting portion and the second mounting portion to be defined in position.
15. The foldable propeller according to any one of claims 1 to 14, wherein the swing prevention member is detachably connected to the first and second blades.
16. An unmanned aerial vehicle, comprising a foldable propeller according to any one of claims 1 to 15.

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