WO2022127100A1

WO2022127100A1 - Propeller assembly and unmanned aerial vehicle

Info

Publication number: WO2022127100A1
Application number: PCT/CN2021/106850
Authority: WO
Inventors: 肖锭锋; 谭亚辉; 温海军
Original assignee: 广州极飞科技股份有限公司
Priority date: 2020-12-15
Filing date: 2021-07-16
Publication date: 2022-06-23
Also published as: CN112455672A

Abstract

A propeller assembly (14) and an unmanned aerial vehicle (10). The propeller assembly (14) comprises blades (200), a mounting main body (100), a limiting member (300), and a movable member (400). The blades (200) are rotatably connected to the mounting main body (100) and can rotate to an unfolded state relative to the mounting main body (100). The limiting member (300) is fixed on the blades (200), and the movable member (400) is movably provided on the mounting main body (100). In the case that the blades (200) are in an unfolded state, the limiting member (300) is fitted to the movable member (400) to cause the limiting member (300) to be fixed relative to the mounting main body (100). The movable member (400) can move under the action of an external force to be separated from the limiting member (300).

Description

A propeller assembly and unmanned aerial vehicle

technical field

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

Background technique

The rotorcraft includes a fuselage, an arm, a driving device, and a propeller assembly fixed on the driving device. Among them, the arms are distributed around the fuselage and are fixedly connected with the fuselage. The drive device is fixed on the end of the arm away from the fuselage, and the drive device drives the propeller assembly to provide lift for the flight of the aircraft. In the prior art, the propeller assembly is a foldable propeller assembly so as to facilitate the accommodation of the rotorcraft.

Then, when the rotorcraft adjusts the attitude and the rotational speed of the driving device changes, due to the inertia of the blades, the blades will swing relative to the driving device before the balance is formed, resulting in the imbalance of the blades; at the same time, because the aircraft will often The speed and direction of operation are changed, so the rotation speed of the blade is often changed. Therefore, under the inertia of the blade, the blade often swings relative to the driving device, which may cause installation gap between the blade and the driving device. increase, which in turn causes the rotorcraft to fly unstable. At the same time, it will also cause a greater degree of wear on the blades and shorten the service life of the drone.

SUMMARY OF THE INVENTION

The purpose of this application includes providing a propeller assembly, which can solve the technical problems of unstable flight of the UAV caused by the inertial action of the blades and serious wear of the blades.

The purpose of the present application also includes providing an unmanned aerial vehicle, which can solve the technical problems of unstable flight of the unmanned aerial vehicle caused by the inertial action of the blades and serious wear of the blades.

The embodiments of the present application can be implemented as follows:

Embodiments of the present application provide a propeller assembly, which includes a blade, an installation body, a limiting member and a movable member.

The paddle is rotatably connected to the installation body and can be rotated relative to the installation body to a deployed state.

The limiting member is fixed on one of the paddle and the installation body, and the movable member is movably arranged on the other of the paddle and the installation body.

When the paddle is in the unfolded state, the limiting member is clamped with the movable member so that the limiting member is fixed relative to the installation body. The movable member can move under the action of external force to release the limiting member.

The beneficial effects of the propeller assembly provided by the present application relative to the prior art include:

The blades in the propeller assembly operate in a deployed state so as to provide power to a drone using the propeller assembly. When the blade in the propeller assembly is in the unfolded state, the stopper is fixed relative to the installation body through the clamping between the stopper and the movable member, so that the blade can be fixed relative to the installation body; when the blade rotates During the process, when the UAV changes the rotation speed of the blade, the fixed action of the movable part can prevent the blade from swinging relative to the installation body under the action of inertia, so as to achieve the purpose of stabilizing the blade, so it can solve the existing problem. In the technology, the drone flight is unstable due to the inertial action of the blades, and the technical problems of serious blade wear. To achieve smooth flight of the UAV, effectively complete the tasks specified by the user; and to achieve the purpose of improving the service life of the UAV.

Optionally, the limiting member is fixed on the paddle, and the movable member is movably arranged on the installation body.

Optionally, the movable member includes a matching portion, and a guide channel is opened on the installation body. The matching portion is movably matched with the guide channel. The matching portion protrudes out of the guide channel to engage with the limiting member, or the matching portion retracts from the guiding channel under the action of an external force to release the limiting member.

Optionally, the propeller assembly further includes an elastic member disposed inside the guide channel and connected with the matching portion. When the fitting portion is retracted from the guide channel, the elastic member is elastically deformed.

Optionally, a guide hole is further opened on the bottom wall of the guide channel, and the movable member further includes a guide portion. The guide portion is arranged on the matching portion and is slidably matched with the guide hole. The elastic piece is sleeved on the guide portion.

Optionally, the limiting member includes a connecting part and a clamping part, the connecting part is fixed on the paddle, the clamping part is arranged on one side of the connecting part, and the clamping part is opened. There is a snap slot. In the case of the unfolded state, the snap groove is matched with the movable member.

Optionally, a guiding inclined surface is provided on the side surface of the engaging portion that is matched with the installation body, and the guiding inclined surface is disposed on the outer side of the engaging portion and forms a guiding cavity together with the mounting main body. The guide cavity has an opening facing the outer side of the engaging portion. The guide slope is used to push the movable member to move relative to the installation body during the process of rotating the paddle to the deployed state.

Optionally, the mounting body includes a first mounting piece and a second mounting piece, the first mounting piece and the second mounting piece clamp the paddle, and the paddle is mounted with the first mount Both the component and the second mounting component are rotatably connected. The limiting member is arranged between the paddle and the first mounting member. The movable part is movably connected with the first mounting part.

Optionally, the movable member includes a pressing portion, and a lead-out hole is formed on the second mounting member. The pressing portion protrudes from the lead-out hole.

Optionally, a limiting portion is protruded from the outer periphery of the pressing portion, the limiting portion is provided between the first mounting member and the second mounting member, and the limiting portion is used to abut against the The second mount is adjacent to the side of the first mount.

A drone includes a propeller assembly. The propeller assembly includes a blade, an installation body, a limiting member and a movable member.

The present application also provides an unmanned aerial vehicle, which adopts the above-mentioned propeller assembly, and the beneficial effect of the unmanned aerial vehicle relative to the prior art is the same as the beneficial effect of the propeller assembly provided above relative to the prior art. No longer.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present application more clearly, the following drawings will briefly introduce the drawings that need to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore do not It should be regarded as a limitation of the scope, and for those of ordinary skill in the art, other related drawings can also be obtained according to these drawings without any creative effort.

1 is a schematic structural diagram of an unmanned aerial vehicle provided in an embodiment of the application;

2 is a schematic structural diagram of the propeller assembly and the drive device provided in the embodiment of the application;

3 is a schematic cross-sectional structural diagram of one state of the propeller assembly and the driving device provided in the embodiment of the application;

Fig. 4 is the enlarged structure schematic diagram of A place in Fig. 3;

5 is a schematic cross-sectional structural diagram of another state of the propeller assembly and the driving device provided in the embodiment of the application;

6 is a schematic structural diagram of a movable part provided in an embodiment of the present application;

7 is a schematic structural diagram of a first mounting member provided in an embodiment of the present application;

8 is a partial cross-sectional structural schematic diagram of a propeller assembly provided in other embodiments of the present application;

FIG. 9 is a schematic partial structure diagram of a paddle and a limiting member provided in other embodiments of the present application;

10 is a schematic structural diagram of a second mounting member provided in other embodiments of the present application;

FIG. 11 is a schematic structural diagram of a movable member provided in other embodiments of the present application;

Figure 12 is an enlarged schematic view of the structure at C in Figure 8;

13 is a schematic structural diagram of the limiting member provided in the embodiment of the application;

14 is a schematic structural diagram of a second mounting member provided in an embodiment of the application;

FIG. 15 is an enlarged schematic view of the structure at B in FIG. 3 .

Icon: 10-UAV; 11-fuselage; 12-arm; 13-drive device; 14-propeller assembly; 100-installation body; 110-first installation piece; 111-guide channel; 112-guide hole; 113-installation part; 114-clamping part; 115-rotating shaft; 120-second mounting piece; 121-export hole; 122-second accommodating slot; 200-paddle; 300-limiting piece; 310-card 311-clamping groove; 312-guidance slope; 320-connecting part; 321-first installation hole; 322-second installation hole; 330-transition section; 400-movable part; 410-matching part; 430-pressing part; 431-limiting part; 432-pressing structure; 440-moving block; 441-limiting groove; 442-first accommodating groove; 450-toggle part; 510-elastic part; 520 - Damping pad.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of the present application, but not all of the embodiments. The components of the embodiments of the present application generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Thus, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application as claimed, but is merely representative of selected embodiments of the application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

It should be noted that like numerals and letters refer to like items in the following figures, so once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of this application, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, or It is the usual orientation or positional relationship when the product of the invention is used, which is only for the convenience of describing the application 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 , so it cannot be construed as a limitation on this application.

In addition, where the terms "first", "second" and the like appear, they are only used to differentiate the description, and should not be construed as indicating or implying relative importance.

It should be noted that the features in the embodiments of the present application may be combined with each other under the condition of no conflict.

Referring to FIG. 1 , an embodiment of the present application provides an unmanned aerial vehicle 10 , and the unmanned aerial vehicle 10 can be used for operations such as pesticide spraying or water sprinkling irrigation on crops in the farming industry. Of course, the drone 10 can also be used in other fields such as spraying of fire extinguishing liquid, aerial photography, power inspection, environmental monitoring, forest fire prevention and disaster inspection in forest fires.

Wherein, the drone 10 includes a fuselage 11 , an arm 12 , a driving device 13 and a propeller assembly 14 . The arms 12 are distributed around the fuselage 11 and are fixedly connected with the fuselage 11 . The driving device 13 is installed on the end of the arm 12 away from the fuselage 11 , and the propeller assembly 14 is installed on the driving device 13 .

In the embodiment of the present application, the propeller assembly 14 can solve the technical problems of unstable flight of the UAV 10 caused by the inertial action of the blades 200 in the prior art and serious wear of the blades 200, so as to achieve the unmanned aerial vehicle 10 The purpose of flight stability and prolonging the service life of the UAV 10. Under the circumstance that the propeller assembly 14 solves the above technical problems, the UAV 10 can also solve the problems of unstable flight of the UAV 10 caused by the inertial action of the blades 200 and serious wear of the blades 200 in the prior art. question.

Please refer to FIG. 2 and FIG. 3 in combination, the propeller assembly 14 includes a blade 200 , a mounting body 100 , a limiting member 300 and a movable member 400 . The installation body 100 is installed on the driving device 13, and the driving device 13 can drive the installation body 100 to rotate when the driving device 13 is operating. The paddle 200 is rotatably connected to the installation body 100 and can be rotated relative to the installation body 100 to a deployed state. It should be noted that, when the paddle 200 is in the unfolded state, the paddle 200 can follow the installation body 100 to rotate, so as to provide power to the drone 10 . In addition, in order to facilitate the transportation or placement of the UAV 10, the paddle 200 can be rotated relative to the installation body 100, so that the paddle 200 is left from the position of the unfolded state, so as to achieve the purpose of folding the paddle 200, which can reduce the number of unmanned aerial vehicles. The space occupied by the machine 10 can be regarded as the paddle 200 can be rotated relative to the installation body 100 to a folded state at this time.

In the prior art, due to the rotational connection between the paddle 200 and the installation body 100 , when the driving device 13 changes the rotational speed, the paddle 200 will swing relative to the installation body 100 due to the inertia of the paddle 200 . , which will cause the overall unbalance of the propeller assembly 14, and even cause the unmanned aerial vehicle 10 to fly unstable; and, since the unmanned aerial vehicle 10 needs to change the output speed of the driving device 13 during flight to change the unmanned aerial vehicle 10 Therefore, the output speed of the driving device 13 will be changed frequently, which will cause the rotation speed of the blade 200 to change at a high frequency. Swing, in such a case, will cause increased wear between the paddle 200 and the installation body 100 , thereby increasing the installation gap between the installation body 100 and the paddle 200 , reducing the service life of the paddle 200 and the installation body 100 . At the same time, the flying of the drone 10 may be unstable due to the unstable position of the blades 200 .

In order to solve the above technical problems, in the embodiment of the present application, the limiting member 300 is fixed on the paddle 200 , and the movable member 400 is movably arranged on the installation body 100 . When the paddle 200 is in the unfolded state, the limiting member 300 is clamped with the movable member 400 so that the limiting member 300 is fixed relative to the installation body 100 . In other words, when the paddle 200 is in the unfolded state, through the mutual cooperation between the limiting member 300 and the movable member 400 , when the limiting member 300 is fixed relative to the mounting body 100 , the paddle 200 can be relatively fixed to the mounting body 100 . The main body 100 is fixed, therefore, even if the output speed of the driving device 13 changes, the swing of the paddle 200 relative to the mounting body 100 can be restricted by the limiting member 300 and the movable member 400, thereby improving the relationship between the paddle 200 and the mounting body 100 in the prior art The problem of unstable flight of the drone 10 caused by the swing between the two and serious wear of the installation body 100 and the blade 200, so as to solve the unstable flight of the drone 10 caused by the inertial action of the blade 200 in the prior art, and the blade 200 is not stable. 200 Wear serious technical problems. In addition, the movable member 400 can move under the action of an external force to disengage the limiting member 300 . When the paddle 200 needs to be folded, the movable member 400 is disengaged from the limiting member 300 through the action of external force. Since the limiting member 300 is detached from the movable member 400, the paddle 200 can freely rotate relative to the installation body 100, thereby It can be realized that the paddle 200 leaves the position of the unfolded state to rotate to the position of the folded state.

It should be noted that, in other embodiments of the present application, the limiting member 300 may also be fixed on the installation body 100, and correspondingly, the movable member 400 is movably disposed on the paddle 200, so that the movable member 400 can also pass through the movable member. The mutual cooperation of 400 and the limiting member 300 realizes the fixing of the paddle 200 relative to the installation body 100 . Therefore, in the embodiment of the present application, the limiting member 300 is fixed on one of the paddle 200 and the installation body 100 , and the movable member 400 is movably disposed on the other of the paddle 200 and the installation body 100 .

As described above, when the propeller blade 200 in the propeller assembly 14 is in the unfolded state, the limiter 300 is fixed relative to the installation body 100 through the clamping between the limiter 300 and the movable piece 400, so that the propeller can be The blade 200 is fixed relative to the installation body 100 ; during the rotation of the blade 200 , when the UAV 10 changes the rotational speed of the blade 200 , the fixed action of the movable member 400 can prevent the blade 200 from being under the action of inertia The relative installation body 100 swings to achieve the purpose of stabilizing the blade 200, thus solving the technical problems of unstable flight of the drone 10 caused by the inertial action of the blade 200 and serious wear of the blade 200 in the prior art. The UAV 10 can fly smoothly and effectively complete the operation specified by the user; and the purpose of improving the service life of the UAV 10 is achieved.

In the embodiment of the present application, the mounting body 100 includes a first mounting member 110 and a second mounting member 120, the first mounting member 110 is mounted on the driving device 13, and the driving device 13 drives the first mounting member 110 to rotate when outputting power . In addition, the first mounting member 110 and the second mounting member 120 clamp the blade 200. When the first mounting member 110 rotates, the second mounting member 120 is simultaneously driven to rotate, and the first mounting member 110 and the second mounting member 120 share the same Drive the paddle 200 to rotate. The paddle 200 is rotatably connected to both the first mounting member 110 and the second mounting member 120 , and the paddle 200 can be rotated relative to the first mounting member 110 and the second mounting member 120 to an unfolded state or a folded state.

Optionally, in some embodiments of the present application, the limiting member 300 may be provided as a sheet-like structure, and the limiting member 300 is provided between the paddle 200 and the first mounting member 110 . The movable member 400 is movably connected with the first mounting member 110 . The rotation plane of the paddle 200 is substantially parallel to the plane of the first mounting member 110 that is matched with the limiting member 300 , so that when the paddle 200 rotates relative to the first mounting member 110 , it is convenient for the limiting member 300 to face each other. The first mount 110 is rotated.

Please refer to FIG. 3 , FIG. 4 and FIG. 5 , the movable member 400 includes a matching portion 410 , and a guide channel 111 is opened on the installation body 100 . The matching portion 410 is movably engaged with the guide channel 111 , and the matching portion 410 can slide along the extending direction of the guide channel 111 . The matching portion 410 extends out of the guide channel 111 and is engaged with the limiting member 300 to realize the locking of the limiting member 300 and the movable member 400 , as shown in FIGS. 3 and 4 ; or, the matching portion 410 retracts into the guide channel under the action of an external force 111 to disengage the limiting member 300, as shown in FIG. 5 . Optionally, in the embodiment of the present application, the guide channel 111 may be a hole opened on the first mounting member 110 for guiding, and the guide channel 111 is substantially perpendicular to the rotation plane; the matching portion 410 is movably arranged in the guide channel 111 and can move along the guide channel 111 , that is, the fitting part 410 can move on a path perpendicular to the rotation plane to selectively extend or retract the guide channel 111 . When the matching portion 410 extends out of the guide channel 111 , the matching portion 410 can be engaged with the limiting member 300 ; when the matching portion 410 retracts into the guide channel 111 , the matching portion 410 is disengaged from the limiting member 300 . The position member 300 and the paddle 200 can freely rotate relative to the first mounting member 110 .

It should be noted that, in other embodiments of the present application, the arrangement of the fitting portion 410 and the guide channel 111 may be different, so that the fitting manners of the fitting portion 410 and the limiting member 300 are different. For example, the guide channel 111 is provided as an elongated hole, the matching portion 410 is movably engaged with the guide channel 111, and the matching portion 410 can slide along the guide channel 111 to selectively move away from or approach the limiting member 300; when the matching portion 410 is in the guide When the channel 111 is close to the end of the limiting member 300 , the matching portion 410 can be engaged with the limiting member 300 ; when the matching portion 410 is at the end of the guide channel 111 away from the limiting member 300 , the matching portion 410 is released from the limiting position 300 , so that the limiting member 300 and the paddle 200 can be easily rotated relative to the first mounting member 110 .

Optionally, please refer to FIG. 6 and FIG. 7 in combination, in the embodiment of the present application, the cross-section of the matching portion 410 is roughly waist-shaped, in other words, the cross-sectional shape of the matching portion 410 can be regarded as being composed of two semicircular figures A shape formed together with a square figure, wherein the square is arranged between two semicircles, and the straight lines of the semicircle pattern coincide with the straight lines of the square pattern. Of course, the matching portion 410 can also be set in other shapes, such as oval, circular, square, triangle, parallelogram, or other special-shaped figures. Correspondingly, the shape of the guide channel 111 is adapted to the matching portion 410 , that is, the shape of the guide channel 111 is substantially the same as that of the matching portion 410 .

Optionally, please continue to refer to Fig. 3, Fig. 4 and Fig. 5, in the embodiment of the present application, the propeller assembly 14 further includes an elastic member 510. The elastic member 510 is disposed inside the guide channel 111 and connected with the matching portion 410 . In addition, when the fitting portion 410 retracts into the guide channel 111 , the elastic member 510 is elastically deformed. In other words, when the fitting portion 410 is retracted into the guide channel 111 under the action of an external force, the movement of the fitting portion 410 causes the elastic member 510 to elastically deform. 410 protrudes out of the guide channel 111 , so as to facilitate the cooperation between the matching portion 410 and the limiting member 300 . Optionally, in the embodiment of the present application, the limiting member 300 abuts between the bottom wall of the guide channel 111 and the matching portion 410 , so that when the matching portion 410 retracts into the guide channel 111 , the matching portion 410 The elastic member 510 is compressed, so that the elastic member 510 is elastically deformed; when the external force is withdrawn, the elastic member 510 pushes the matching portion 410 out of the guide channel 111 under the action of the elastic restoring force.

Of course, in other embodiments of the present application, the arrangement of the elastic member 510 may be different. For example, one end of the elastic member 510 is connected to the side wall of the guide channel 111 , and the other end is connected to the matching portion 410 . When returning to the channel 111 , the fitting portion 410 stretches the elastic member 510 , so that the elastic member 510 is elastically deformed. For another example, when the movement mode of the matching portion 410 along the guide channel 111 is “selectively moving away from or approaching the limiting member 300 ”, the elastic member 510 may abut between the matching portion 410 and the side wall of the guide channel 111 , Therefore, when the matching portion 410 moves away from the limiting member 300 , the elastic member 510 can be jointly compressed by the matching portion 410 and the side wall of the guide channel 111 , and when the external force is withdrawn, the elastic restoring action of the elastic member 510 enables the matching portion 410 Move close to the limiter 300 .

Optionally, referring to FIG. 8 and FIG. 9 in combination, in other embodiments of the present application, other setting methods may be adopted for the setting manners of the limiting member 300 and the movable member 400 . For example, the limiting member 300 is a columnar structure fixed on the paddle 200 , the limiting member 300 is disposed substantially perpendicular to the rotation plane of the paddle 200 , and the limiting member 300 protrudes from one side of the paddle 200 . The movable member 400 is movably disposed on the second mounting member 120 , and the movable member 400 can move relative to the second mounting member 120 to selectively approach or move away from the limiting member 300 . In order to achieve the purpose of fixing the paddle 200 relative to the installation body 100, the movable member 400 cooperates with the limiting member 300 to make the installation body 100 and the paddle 200 relatively fixed; and, under the action of external force, the movable member 400 can be away from the limiting member 300 moves to disengage from the limiting member 300 to release the cooperation relationship between the limiting member 300 and the movable member 400 , so that the paddle 200 can rotate freely relative to the installation body 100 . It should be noted that, in the case where the movable member 400 cooperates with the limiting member 300 , the paddle 200 is in a deployed state relative to the installation body 100 . When the movable member 400 and the limiting member 300 are disengaged, the paddle 200 can be rotated relative to the installation body 100 to a folded state.

Optionally, the limiting member 300 may be a cylindrical bolt structure. Correspondingly, the paddle 200 is provided with a threaded hole (not marked in the figure) that is adapted to the limiting member 300, and the limiting member 300 can be separated from the paddle 300. One side of the blade 200 is screwed into the threaded hole, and protrudes from the other side of the paddle 200 to facilitate cooperation with the movable member 400 . It should be understood that the limiting member 300 may also be disposed on the paddle 200 in other manners, for example, the limiting member 300 is welded on the paddle; for another example, the limiting member 300 and the paddle 200 are formed in one piece; For another example, the paddle 200 is provided with a through hole that cooperates with the limiting member 300 , and the limiting member 300 passes through the through hole and has an interference fit with the through hole.

In addition, please refer to FIG. 8 and FIG. 10 , in order to cooperate with the limiting member 300 , the movable member 400 is provided with a limiting groove 441 which is adapted to the limiting member 300 , and the movable member 400 and the limiting member 300 are mutually In the case of cooperation, the limiting member 300 is accommodated in the limiting groove 441, thereby realizing the mutual cooperation between the movable member 400 and the limiting member 300; when the movable member 400 moves away from the limiting member 300, the limiting member 300 The position-limiting groove 441 is disengaged, so as to release the mutual cooperation between the position-limiting member 300 and the movable member 400 .

Optionally, please refer to FIG. 8 and FIG. 11 , in order to realize the movable connection between the movable member 400 and the second mounting member 120 , the end of the second mounting member 120 close to the paddle 200 is provided with a guide channel 111 , and the guide channel 111 It can be a groove formed on the second mounting member 120, and the movable member 400 can movably cooperate with the guide channel 111; the guide channel 111 is arranged toward the paddle 200, so that the movable member 400 can slide in the groove-shaped guide channel 111 , so as to selectively approach or move away from the paddle 200 , so that the purpose of matching the movable member 400 with the limiting member 300 can be achieved under the condition of being close to the paddle 200 .

In addition, please continue to refer to FIG. 10 , the movable member 400 may include a movable block 440 and a toggle portion 450 , and the movable block 440 is connected with the toggle portion 450 . The toggle portion 450 can movably cooperate with the guide channel 111 . When the toggle portion 450 slides along the guide channel 111 , the toggle portion 450 drives the movable block 440 to selectively approach the paddle 200 or move away from the paddle 200 . The limiting slot 441 is formed on the movable block 440, and when the movable block 440 is close to the paddle 200, the relative installation of the paddle 200 can be realized by the cooperation between the limiting slot 441 on the movable block 440 and the limiting member 300. Fixing of the main body 100 . The toggle portion 450 may be set in a wedge shape, so as to facilitate the user to apply an external force to the toggle portion 450 and facilitate the sliding of the toggle portion 450 along the guide channel 111 . Optionally, the toggle portion 450 may also be provided with an anti-slip groove (not shown) to facilitate the user to operate the toggle portion 450 .

In order to facilitate the cooperation between the movable block 440 and the elastic member 510, please refer to FIG. 8 and FIG. 12 in combination. Optionally, the movable block 440 is further provided with a first accommodating groove 442, and one end of the elastic member 510 extends into the first accommodating groove. The groove 442 is pressed against the bottom wall of the first accommodating groove 442 , and the other end of the elastic member 510 can be pressed against the second mounting member 120 . Wherein, the first accommodating groove 442 is opened on the end of the movable block 440 away from the limiting groove 441 . Correspondingly, in order to facilitate the cooperation between the elastic member 510 and the second mounting member 120, a second accommodating groove 122 may be formed on the second mounting member 120, and the other end of the elastic member 510 extends into the second accommodating groove 122 and abuts against the second accommodating groove 122. Hold on the bottom wall of the second accommodating groove 122 . It should be noted that, when the movable block 440 and the limiting member 300 cooperate with each other, the elastic member 510 can be configured to be in a compressed state, so that an elastic force can be provided to the movable block 440 through the elastic member 510, so that the movable block The 440 can be stably abutted on the limiting member 300 , which can improve the cooperation stability between the movable block 440 and the limiting member 300 , thereby improving the stability of the blade 200 being fixed relative to the installation body 100 .

It should be noted that the following content will be described by taking the guide channel 111 configured as a hole-shaped channel opened on the first mounting member 110 and the limiting member 300 configured as a sheet-like structure as an example for description.

In addition, please continue to refer to FIG. 4 , FIG. 5 and FIG. 6 , in some embodiments of the present application, a guide hole 112 is also opened on the bottom wall of the guide channel 111 , and the extension direction of the guide hole 112 is the same as that of the guide channel 111 . The directions are the same, in other words, the axis of the guide hole 112 is parallel or coincident with the axis of the guide channel 111 . The movable member 400 further includes a guide portion 420 . The guide portion 420 is disposed on the matching portion 410 and slidingly fits with the guide hole 112 . When the matching portion 410 moves along the guide channel 111 , the guide portion 420 moves along the guide hole 112 ; through the guiding function of the guide hole 112 , the matching portion 410 can be ensured. It moves stably along the guide channel 111 to avoid the situation where the fitting portion 410 is stuck due to the deflection of the fitting portion 410 . The elastic member 510 is sleeved on the guide portion 420 . When the matching portion 410 compresses the elastic member 510 , the guide portion 420 can provide stability to the elastic member 510 to prevent the position of the elastic member 510 from changing and the matching portion 410 cannot extend out of the guide. Case of channel 111. Therefore, by providing the guide portion 420 on the matching portion 410 , the stability of the matching portion 410 moving relative to the guide channel 111 can be improved, and the stability of the operation of the elastic member 510 can also be ensured.

It should be understood that, in some embodiments of the present application, the guide portion 420 and the guide hole 112 may also be eliminated.

Since the matching portion 410 is provided on the first mounting member 110, in the case where the second mounting member 120 is provided, in order to facilitate the user to apply external force to the movable member 400, the movable member 400 may further include a pressing portion 430, and the pressing portion 430 is provided on the movable member 400. The matching portion 410 is on the side away from the guide portion 420 . Correspondingly, a lead-out hole 121 is formed on the second mounting member 120 . The pressing portion 430 protrudes from the lead-out hole 121 . The user can press the pressing portion 430 protruding from the lead-out hole 121 , thereby applying an external force to the fitting portion 410 , so that the fitting portion 410 can move along the guide channel 111 . The extension direction of the lead-out hole 121 is the same as the extension direction of the guide channel 111 , in other words, the central axis of the lead-out hole 121 is parallel or coincident with the central axis of the guide channel 111 .

Optionally, in order to prevent the matching portion 410 from coming out of the guide channel 111 , in the embodiment of the present application, a limiting portion 431 is protruded from the outer periphery of the pressing portion 430 , and the limiting portion 431 is provided on the first mounting member 110 and the second mounting member. 120, and the limiting portion 431 is used to abut against the side of the second mounting member 120 close to the first mounting member 110, wherein, when the limiting portion 431 is against the second mounting member 120, the matching portion 410 is partially accommodated in the guide channel 111 . In other words, in the direction along which the matching portion 410 comes out of the guide channel 111 , the movement of the matching portion 410 can be restricted by the limiting portion 431 abutting on the second mounting member 120 , thereby preventing the matching portion 410 from coming out of the guide channel 111 . At the same time, the pressing portion 430 can also prevent the matching portion 410 from being driven out of the guide channel 111 . Therefore, it can be ensured that the engaging portion 410 can move in the guide channel 111 stably. Optionally, the limiting portion 431 may be configured in a ring shape, and the diameter of the limiting portion 431 is larger than the diameter of the lead-out hole 121 , so that when the matching portion 410 moves along the direction in which the matching portion 410 extends out of the guide channel 111 , the limiting portion 431 has a larger diameter. The 431 can abut against the second mounting member 120 , which can prevent the limiting portion 431 from passing through the lead-out hole 121 , thereby preventing the matching portion 410 from coming out of the guide channel 111 . It should be understood that, in other embodiments, the limiting portion 431 may be configured as a plurality of protrusions protruding from the outer periphery of the pressing portion 430, and only the longest span dimension of the shape formed by the end of the plurality of protrusions away from the pressing portion 430 is required A diameter larger than the diameter of the lead-out hole 121 may be sufficient.

Optionally, an end of the pressing portion 430 away from the matching portion 410 may be provided with a pressing structure 432 that is convenient for pressing, and the pressing structure 432 is sleeved on the pressing portion 430 . At this time, the lead-out hole 121 can be matched with the pressing structure 432 , so that the pressing structure 432 can slide along the lead-out hole 121 to drive the matching portion 410 to move along the guide channel 111 . Of course, the setting of the pressing structure 432 can also be cancelled.

Please refer to FIG. 3 , FIG. 4 , FIG. 13 and FIG. 14 , the limiting member 300 includes a connecting portion 320 and a clamping portion 310 , the connecting portion 320 is fixed on the blade 200 , and a plurality of first installations are opened on the connecting portion 320 The hole 321 can be connected to the paddle 200 through the first mounting hole 321 by fixing parts such as screws, so as to realize the connection between the connector and the paddle 200 . In addition, in the embodiment of the present application, the first mounting member 110 is provided with a rotating shaft 115 , and the rotating shaft 115 is used for the rotational connection of the blade 200 relative to the first mounting member 110 . In order to fit with the rotating shaft 115 , the connecting portion 320 is provided with a second mounting hole 322 , and the second mounting hole 322 is used for the rotating shaft 115 to pass through. Optionally, the clamping part 310 is disposed on one side of the connecting part 320 , and a clamping groove 311 is opened on the clamping part 310 . In the unfolded state, the engaging slot 311 is matched with the movable member 400 . The shape of the engaging slot 311 is adapted to the shape of the side of the matching portion 410 close to the limiting member 300 , so that the matching portion 410 can fit on the inner sidewall of the engaging slot 311 , so that the engaging portion 310 and the The snap connection between the matching parts 410 ensures the stability of the snap connection between the engaging part 310 and the matching part 410 , so that the paddle 200 and the limiting member 300 can be stably fixed relative to the installation body 100 at the position of the unfolded state .

In the embodiment of the present application, the first mounting member 110 has a mounting portion 113 and a clamping portion 114 . The mounting portion 113 is used for connection with the driving device 13 . The clamping portion 114 is disposed outside the mounting portion 113 and is used for clamping the blade 200 with the second mounting member 120 . The thickness of the clamping portion 114 is smaller than that of the mounting portion 113 , so that a stepped shape is formed between the clamping portion 114 and the mounting portion 113 . The guide channel 111 is opened on the mounting portion 113 , and the movable member 400 is movably matched with the mounting portion 113 . In order to facilitate the mutual cooperation of the limiting member 300 and the movable member 400 , that is, in order to facilitate the mutual cooperation of the clamping part 310 and the matching part 410 , in the embodiment of the present application, a transition is also provided between the clamping part 310 and the connecting part 320 The clip 310 and the connection part 320 are connected by the transition section 330 , so that a stepped shape is formed between the clip part 310 and the connection part 320 . When the limiting member 300 is matched with the first mounting member 110 , the connecting portion 320 is matched with the clamping portion 114 , and the clamping portion 310 is matched with the mounting portion 113 . Of course, in other embodiments of the present application, when a stepped shape is not formed between the mounting portion 113 and the clamping portion 114, the provision of the transition section 330 can also be eliminated, so that the clamping portion 310 and the connecting portion 320 together form a flat plate like structure.

In the embodiment of the present application, optionally, a guide slope 312 is provided on the side of the engaging portion 310 that is matched with the installation body 100 , and the guide slope 312 is used to push the movable member 400 to face each other during the rotation of the paddle 200 to the unfolded state. The installation body 100 moves, that is, when the paddle 200 is rotated toward the position of the unfolded state, the guide slope 312 can abut on the matching portion 410, and when the paddle 200 continues to rotate, the guide slope 312 pushes the matching portion 410 to retract. back into the guide channel 111; when the paddle 200 rotates until the engaging groove 311 corresponds to the engaging portion 410, the engaging portion 410 protrudes out of the guide channel 111 under the elastic recovery action of the elastic member 510 and cooperates with the engaging groove 311, thereby The snap fit of the snap portion 310 and the fit portion 410 is completed. The guiding slopes 312 are disposed on both sides of the clamping portion 310 , and together with the mounting body 100 form a guiding cavity. The guiding cavity has an opening facing the outside of the clamping portion 310 . When the limiting member 300 moves toward the matching portion 410 , the matching portion 410 enters the guiding cavity from the opening of the guiding cavity, and thus abuts against the guiding inclined surface 312 . When the engaging portion 310 continues to move, the guiding inclined surface 312 presses the matching portion 410 to move along the guiding channel 111 .

Optionally, in the embodiment of the present application, both sides of the engaging portion 310 are provided with guide slopes 312, so that when the engaging portion 310 moves from any side of the engaging portion 410 toward the engaging portion 410, the engaging portion 310 can be The snap-fit of the snap-fit portion 310 and the fit portion 410 is facilitated by the fit of the guide slope 312 and the fit portion 410 .

As described above, the propeller assembly 14 in the embodiment of the present application can be assembled in the following assembly sequence: the first mounting member 110 is mounted on the driving device 13 , and the output shaft of the driving device 13 is connected to the center of the mounting portion 113 . The connecting portion 320 is assembled on the paddle 200 , and the paddle 200 and the limiting member 300 are jointly mounted on the rotating shaft 115 . At this time, the rotating shaft 115 passes through the second mounting hole 322 to rotatably cooperate with the paddle 200 . Install the elastic member 510 into the guide channel 111 . The movable member 400 is installed into the guide channel 111 , and the guide portion 420 is inserted into the guide hole 112 through the elastic member 510 , and the matching portion 410 is matched with the guide channel 111 at the same time. The second mounting member 120 is mounted on the first mounting member 110 , and at the same time, the pressing portion 430 or the pressing structure 432 is protruded from the lead-out hole 121 . Thus, the assembly of the propeller assembly 14 is completed.

It should be noted that, in the embodiment of the present application, the propeller assembly 14 may include a plurality of blades 200, and the plurality of blades 200 are all clamped between the first mounting member 110 and the second mounting member 120, and each Each paddle 200 is provided with a suitable limiting member 300 and a movable member 400 , so that each paddle 200 can be stably clamped in the unfolded state.

In addition, please refer to FIG. 3 and FIG. 15 in combination, in order to prevent the blade 200 from having an excessive degree of freedom when leaving the deployed state, in the embodiment of the present application, the propeller assembly 14 may further include a damping pad 520 . The damping pad 520 The damping pad 520 may also be provided on the second mounting member 120 . For example, a mounting groove is formed on the first mounting member 110, the mounting groove is provided at the rotating shaft 115, and a damping pad 520 is provided in the mounting groove, the damping pad 520 may slightly protrude from the mounting groove, so that the limiting member 300 Can fit with the damping pad 520. When the paddle 200 rotates, due to the friction between the stopper 300 and the damping pad 520, the rotational friction force of the paddle 200 increases, thereby reducing the rotational freedom of the paddle 200. For another example, a mounting groove is provided on the second mounting member 120, the mounting groove is set at the position where the second mounting member 120 cooperates with the rotating shaft 115, and the damping pad 520 is set in the mounting groove and slightly protrudes for installation grooves, so that when the first mounting member 110 and the second mounting member 120 clamp the paddle 200, the paddle 200 is fitted with the damping pad 520, so that the paddle 200 can pass through the damping pad 520 when the paddle 200 rotates A damping effect is provided to the paddle 200 to reduce the rotational freedom of the paddle 200 . Of course, damping pads 520 may be provided on both the first mounting member 110 and the second mounting member 120 , or a damping pad 520 may be provided on any one of the first mounting member 110 and the second mounting member 120 .

To sum up, in the propeller assembly 14 and the UAV 10 provided in the embodiments of the present application, the propeller blade 200 operates in the unfolded state, so as to provide power to the UAV 10 using the propeller assembly 14 . When the propeller blade 200 in the propeller assembly 14 is in the unfolded state, the limiter 300 is fixed relative to the installation body 100 through the clamping between the limiter 300 and the movable member 400 , so that the blade 200 can be relative to the installation body 100 is fixed; during the rotation of the blade 200, when the UAV 10 changes the rotational speed of the blade 200, the fixed action of the movable member 400 can prevent the blade 200 from swinging relative to the installation body 100 under the action of inertia , so as to achieve the purpose of stabilizing the blade 200 , thus solving the technical problems of unstable flight of the drone 10 caused by the inertial action of the blade 200 and serious wear of the blade 200 in the prior art. The UAV 10 can fly smoothly and effectively complete the operation specified by the user; and the purpose of improving the service life of the UAV 10 is achieved. In addition, the provision of the guiding inclined surface 312 on the engaging portion 310 can enable the paddle 200 to be easily rotated to the unfolded state. The above propeller assembly 14 and the UAV 10 are simple in structure, reasonable in design, simple in installation, easy to manufacture and assemble, and can efficiently realize the folding and unfolding of the blade 200 to ensure the stability of the rotation of the blade 200, thereby ensuring that no unmanned The flight stability of the aircraft 10 is improved, and the service life of the blades 200 and the UAV 10 is extended at the same time.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, All should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Industrial Applicability

The solutions provided in the embodiments of the present application can be applied to the technical field of unmanned aerial vehicles. In the embodiments of the present application, a propeller assembly and an unmanned aerial vehicle are provided. The propeller assembly includes a propeller blade, an installation body, a limiting member and a movable member . The paddle is rotatably connected to the installation body and can be rotated relative to the installation body to a deployed state. The limiting piece is fixed on the blade, and the movable piece is movably arranged on the installation body. When the paddle is in the unfolded state, the stopper is clamped with the movable piece so that the stopper is fixed relative to the installation body. The movable piece can move under the action of external force to disengage the limit piece. The UAV adopts the above-mentioned propeller assembly, which solves the technical problems of unstable flight of the UAV due to the inertial action of the blades and serious blade wear in the prior art, and achieves the technical effect of improving the service life of the UAV. .

Claims

A propeller assembly, comprising: a blade (200), an installation body (100), a limiting member (300) and a movable member (400);

The paddle (200) is rotatably connected to the installation body (100), and can be rotated relative to the installation body (100) to a deployed state;

The limiting member (300) is fixed on one of the paddle (200) and the installation body (100), and the movable member (400) is movably arranged on the paddle (200) and the mounting body (100). on the other of the installation bodies (100);

When the paddle (200) is in the unfolded state, the limiting member (300) cooperates with the movable member (400) so that the limiting member (300) is opposite to the installation body ( 100) fixed; the movable member (400) can move under the action of an external force to disengage the limiting member (300).
The propeller assembly according to claim 1, wherein the limiting member (300) is fixed on the blade (200), and the movable member (400) is movably arranged on the installation body (100).
The propeller assembly according to claim 2, wherein the movable member (400) comprises a matching portion (410), and a guide channel (111) is opened on the mounting body (100); the matching portion (410) is connected with the The guide channel (111) is movably matched; the matching portion (410) protrudes out of the guide channel (111) and is engaged with the limiting member (300), or the matching portion (410) acts on an external force The guide channel (111) is retracted downward to disengage the limiting member (300).
The propeller assembly according to claim 3, wherein the propeller assembly (14) further comprises an elastic member (510), the elastic member (510) is disposed inside the guide channel (111) and is connected with the matching portion (410) connection; when the fitting portion (410) retracts into the guide channel (111), the elastic member (510) is elastically deformed.
The propeller assembly according to claim 4, wherein a guide hole (112) is further opened on the bottom wall of the guide channel (111), and the movable member (400) further comprises a guide portion (420); the guide The part (420) is arranged on the matching part (410) and slidingly fits with the guide hole (112); the elastic member (510) is sleeved on the guide part (420).
The propeller assembly according to claim 2, wherein the limiting member (300) comprises a connecting part (320) and a clamping part (310), and the connecting part (320) is fixed on the blade (200) on one side of the connecting portion (320), and the engaging portion (310) is provided with an engaging slot (311); where the paddle (200) is located In the case of the unfolded state, the snap groove (311) is matched with the movable member (400).
The propeller assembly according to claim 6, wherein a guide slope (312) is provided on a side surface of the snap portion (310) that is matched with the installation body (100), and the guide slope (312) is arranged on the The two sides of the clamping portion (310) form a guide cavity together with the mounting body (100); the guiding cavity has an opening facing the outside of the clamping portion (310); the guiding slope (312) ) is used to push the movable member (400) to move relative to the installation body (100) during the process of rotating the paddle (200) to the deployed state.
The propeller assembly according to any one of claims 1-7, wherein the mounting body (100) comprises a first mounting member (110) and a second mounting member (120), the first mounting member (110) ) and the second mounting member (120) clamp the paddle (200), and the paddle (200) and the first mounting member (110) and the second mounting member (120) are both Rotationally connected; the limiting member (300) is arranged between the paddle (200) and the first mounting member (110); the movable member (400) is connected to the first mounting member (110) Active connection.
The propeller assembly according to claim 8, wherein the movable member (400) comprises a pressing portion (430), and a lead-out hole (121) is formed on the second mounting member (120); the pressing portion (430) ) protrudes from the lead-out hole (121).
The propeller assembly according to claim 9, wherein a limiting portion (431) is protruded from the outer periphery of the pressing portion (430), and the limiting portion (431) is provided on the first mounting member (110) and the between the second mounting pieces (120), and the limiting portion (431) is used to abut against the side surface of the second mounting piece (120) close to the first mounting piece (110).
A drone comprising a propeller assembly (14) as claimed in any one of claims 1 to 10.