WO2021035631A1

WO2021035631A1 - Quick release member, propeller assembly, and multi-rotor unmanned aerial vehicle

Info

Publication number: WO2021035631A1
Application number: PCT/CN2019/103376
Authority: WO
Inventors: 谢旻钊
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2021-03-04
Also published as: CN112119010A

Abstract

A quick release member (330), a propeller assembly (300), and a multi-rotor unmanned aerial vehicle. The quick release member is used to detachably mount a propeller (310) on a driving mechanism (320). The quick release member comprises a mounting portion (1) connected to or formed on either one of the propeller or the driving mechanism, and a locking mechanism (2) formed on or connected to the other one of the propeller or the driving mechanism. The locking mechanism comprises a main body portion (21) and a locking portion (22). The main body portion is connected to the driving mechanism. The main body portion has an accommodation space (211). The locking portion is at least partially located in the accommodation space. The mounting portion is accommodated in the accommodation space, and rotates relative to the locking portion in the accommodation space, such that switching between a locked position and an unlocked position is performed on the mounting portion and the locking portion, and correspondingly switching between a locked state and an unlocked state is performed on the propeller and the driving mechanism. The invention allows a user to implement detachable connection between the propeller and the driving mechanism by means of a single rotation operation, and is easy to operate.

Description

Quick release parts, propeller components and multi-rotor unmanned aerial vehicles

Technical field

The invention relates to the technical field of aircraft, in particular to a quick-release part, a propeller assembly and a multi-rotor unmanned aerial vehicle.

Background technique

Propellers are usually used as power propellers for aircraft or ships. A propeller generally includes a blade, a hub on which the blade is installed, and a motor connected to the hub. The motor drives the blade to rotate together. At present, the fixed connection method of the propeller hub and the motor shell generally adopts a completely fixed method, a threaded tight fitting method or a mechanical limit method.

In the case of a fully fixed method, when the propeller needs to be transported, the hub cannot be removed from the motor, and the blades cannot be stowed, resulting in inconvenient transportation and easy damage to the blades. When the threaded tight fitting method is used, when the motor suddenly decelerates, the propeller blade may withdraw from the mating surface of the propeller hub and the motor due to its own inertia, causing the propeller to shoot. The structure of the existing mechanical limit is relatively complicated, and most of them cannot realize the fixed connection of the propeller hub and the motor housing through one operation, which is inconvenient for the user to operate.

Summary of the invention

The invention provides a quick-release part, a propeller assembly and a multi-rotor unmanned aerial vehicle.

Specifically, the present invention is implemented through the following technical solutions:

According to a first aspect of the present invention, there is provided a quick-release part for detachably mounting a propeller on a driving mechanism, the quick-release part including one connected to or formed on the propeller and the driving mechanism The mounting portion and the locking mechanism formed or connected to the other of the propeller and the driving mechanism;

The locking mechanism includes a main body part and a locking part, the main body part is connected with the driving mechanism, and the main body part is provided with a receiving space, and the locking part is at least partially located in the receiving space;

The mounting part can be accommodated in the accommodating space, and rotate relative to the locking part in the accommodating space, so that the mounting part and the locking part can be switched between a locked position and an unlocked position, correspondingly The propeller and the driving mechanism are switched between a locked state and an unlocked state.

According to a second aspect of the present invention, there is provided a propeller assembly, the propeller assembly comprising:

A propeller, including a hub and blades installed on the side wall of the hub;

Drive mechanism, including drive shaft; and

In the quick release component according to the first aspect of the present invention, the drive shaft is connected to the propeller through the quick release component.

According to a third aspect of the present invention, there is provided a multi-rotor unmanned aerial vehicle, the multi-rotor unmanned aerial vehicle including:

body;

An arm connected to the fuselage; and

In the propeller assembly according to the second aspect of the present invention, the propeller assembly is connected to an end of the arm away from the fuselage.

According to a fourth aspect of the present invention, there is provided a propeller assembly, the propeller assembly comprising:

The propeller includes a hub, blades connected to the side wall of the hub, a mounting portion provided on the bottom of the hub, and a protrusion provided on the bottom surface of the hub, the hub provided with a first mounting Hole; and

The driving mechanism includes a power device and a locking mechanism provided on the power device, the power device includes a drive shaft, the drive shaft passes through the locking mechanism and is fixedly connected to the first mounting hole;

The locking mechanism includes a main body part and a locking part, the main body part is connected to the power device, and the main body part is provided with a receiving space, and the locking part is at least partially located in the receiving space;

According to a fifth aspect of the present invention, there is provided a multi-rotor unmanned aerial vehicle, the multi-rotor unmanned aerial vehicle including:

body;

An arm connected to the fuselage; and

In the propeller assembly according to the fourth aspect of the present invention, the propeller assembly is connected to an end of the arm away from the fuselage.

According to a sixth aspect of the present invention, there is provided a propeller assembly, the propeller assembly comprising:

The propeller includes a hub, blades connected to the side wall of the hub, and a mounting portion provided at the bottom of the hub, the hub is provided with a first mounting hole, and the bottom surface of the hub is a flat surface Structure; and

The locking mechanism includes a main body part and a locking part, the main body part is connected with the power device, and the main body part is provided with a receiving space, and the locking part is at least partially located in the receiving space;

According to a seventh aspect of the present invention, there is provided a multi-rotor unmanned aerial vehicle, the multi-rotor unmanned aerial vehicle comprising:

body;

An arm connected to the fuselage; and

In the propeller assembly according to the sixth aspect of the present invention, the propeller assembly is connected to an end of the arm away from the fuselage.

According to an eighth aspect of the present invention, there is provided a propeller assembly, the propeller assembly comprising:

The first propeller assembly includes a first driving mechanism and a first propeller that can be detachably mounted on the first driving mechanism; and

The second propeller assembly includes a second driving mechanism and a second propeller that can be detachably mounted on the second driving mechanism;

The first propeller assembly is one of a forward propeller and a reverse propeller, and the second propeller assembly is the other of a forward propeller and a reverse propeller;

Wherein, the first propeller is provided with a first protrusion, and the second driving mechanism is provided with a second protrusion. When the first propeller is installed on the second driving mechanism, the first protrusion Interfere with the second protrusion to restrict the first propeller and the second drive mechanism to the unlocked position;

The second propeller can be detachably mounted on the first driving mechanism.

According to a ninth aspect of the present invention, there is provided a multi-rotor unmanned aerial vehicle, the multi-rotor unmanned aerial vehicle comprising:

body;

An arm connected to the fuselage; and

In the propeller assembly according to the eighth aspect of the present invention, the first propeller assembly and the second propeller assembly are connected to an end of the arm away from the fuselage.

It can be seen from the technical solutions provided by the above embodiments of the present invention that the present invention connects the propeller and the driving mechanism through a quick release, and the user can realize the detachable connection of the propeller and the driving mechanism through a single rotation operation, and the operation is convenient and the structure is simple.

Description of the drawings

In order to explain the technical solutions in the embodiments of the present invention more clearly, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative labor.

Fig. 1 is a schematic structural diagram of a first propeller assembly in an embodiment of the present invention;

Fig. 2 is a schematic view showing the structure of the first propeller assembly in an embodiment of the present invention;

FIG. 3 is a schematic view showing the structure of the first propeller assembly in another direction in an embodiment of the present invention;

4 is a schematic structural diagram of the first propeller of the first propeller assembly in an embodiment of the present invention;

5A is a schematic structural diagram of a first locking mechanism of the first propeller assembly in an embodiment of the present invention;

FIG. 5B is a schematic diagram of a part of FIG. 5A;

Fig. 5C is a schematic diagram of Fig. 5B in another direction;

FIG. 5D is a schematic structural diagram of another part of FIG. 5A;

Fig. 6 is a schematic view showing the structure of the second propeller assembly in an embodiment of the present invention;

Fig. 7 is a schematic structural diagram of a second propeller of a second propeller assembly in an embodiment of the present invention;

Figure 8 is a schematic structural view of a second locking mechanism of a second propeller assembly in an embodiment of the present invention;

9 is a schematic diagram of a comparison between the first propeller of the first propeller assembly and the second propeller of the second propeller assembly in an embodiment of the present invention;

Fig. 10 is a schematic structural diagram of a multi-rotor unmanned aerial vehicle in an embodiment of the present invention.

Reference signs:

100: fuselage; 200: aircraft arm; 300: propeller assembly;

310: propeller; 311: hub; 3111: first mounting hole; 312: blade; 313: first protrusion;

320: drive mechanism; 321: drive shaft;

330: quick release parts; 1: mounting part; 11: adapter part; 12: clamping part; 2: locking mechanism; 21: main body part; 211: receiving space; 212: mounting slot; 2121: first mounting slot; 2122: second mounting groove; 22: locking part; 221: clamping groove; 2211: opening part; 2212: stop part; 222: limit part; 23: connecting part; 231: second mounting hole; 24: prevention Wrong installation structure; 241: fixed part; 2411: third mounting hole; 242: wrong installation block; 25: second protrusion.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

It should be noted that, in the case of no conflict, the features in the following embodiments and implementations can be combined with each other.

With reference to FIGS. 1 to 8, an embodiment of the present invention provides a quick-release part for detachably mounting the propeller on the driving mechanism 320. In this embodiment, the quick release component 330 may include a mounting part 1 and a locking mechanism 2. The mounting part 1 may be connected to or formed in one of the propeller 310 and the driving mechanism 320, and the locking mechanism 2 may be formed in or connected to the propeller. 310 and the other of the driving mechanism 320. Optionally, in an embodiment, the mounting portion 1 is formed on the propeller 310 and the locking mechanism 2 is connected to the driving mechanism 320. For example, the propeller 310 includes a hub 311 and a blade 312 connected to the hub 311, and the mounting part 1 is integrally formed on the hub 311. The driving mechanism 320 of this embodiment may include a power device, and the power device includes a drive shaft 321. Optionally, the power device is a motor, and the locking mechanism 2 is fixedly connected to the housing of the motor. Of course, the power device can also choose other power mechanisms, not limited to motors.

Hereinafter, the structure of the quick-release member 330 will be described in detail by taking the installation part 1 connected to or formed on the hub 311 and the locking mechanism 2 connected to or formed on the power plant as an example.

1 to 8, the locking mechanism 2 may include a main body 21 and a locking portion 22, the main body 21 is connected to the power device, and the main body 21 is provided with a receiving space 211, and the locking portion 22 is at least partially located in the receiving space 211 Inside. The mounting part 1 can be accommodated in the accommodating space 211, and rotates relative to the locking part 22 in the accommodating space 211, so that the mounting part 1 and the locking part 22 can be switched between the locked position and the unlocked position, correspondingly making the propeller 310 and the driving mechanism 320 in Switch between locked state and unlocked state. Specifically, when the mounting part 1 and the locking part 22 are in the locked position, the propeller 310 and the driving mechanism 320 are in the locked state; when the mounting part 1 and the locking part 22 are in the unlocking position, the propeller 310 and the driving mechanism 320 are in the unlocked state. Among them, the locked position refers to the relative position between the mounting portion 1 and the locking portion 22 when the mounting portion 1 and the locking portion 22 are rotated relative to the locking portion 22; the unlocking position refers to the mounting portion 1 relative to the locking portion 22 The relative position between the mounting part 1 and the unlocking part when the mounting part 1 is separated from the locking part 22 by rotating.

In the embodiment of the present invention, the propeller 310 and the driving mechanism 320 are connected through the quick-release member 330, and the user can realize the detachable connection of the propeller 310 and the driving mechanism 320 through a single rotation operation, and the operation is convenient and the structure is simple.

Among them, the main body portion 21 may be in a circular ring shape. Of course, the main body portion 21 may also be provided in other shapes, and the present invention does not specifically limit the shape of the main body portion 21.

The fitting manner of the mounting portion 1 and the locking portion 22 can be designed according to requirements, for example, the fitting can be performed by means of snap connection, plug connection, or the like. Referring to FIGS. 1 to 7, the locking portion 22 may include a locking groove 221, and the locking groove 221 is provided in the receiving space 211. With the relative rotation of the mounting portion 1 and the clamping groove 221, the mounting portion 1 enters the clamping groove 221 to cooperate with the clamping groove 221 or moves out of the clamping groove 221 to separate from the clamping groove 221, correspondingly to make the installation portion 1 The lock portion 22 is in a locked position or an unlocked position. Optionally, when the propeller 310 is locked on the driving mechanism 320, the operating mounting portion 1 rotates in the first direction (for example, clockwise), so that the mounting portion 1 rotates to the locked position relative to the locking groove 221. At this time, the mounting portion 1 is engaged with the clamping groove 221 to lock the propeller 310 on the driving mechanism 320; when the propeller 310 is detached from the driving mechanism 320, the operating mounting part 1 rotates in the opposite direction of the first direction (for example, counterclockwise) , The mounting part 1 is rotated relative to the locking groove 221 to the unlocked position. At this time, the mounting part 1 is separated from the locking groove 221, so that the propeller 310 is detached from the driving mechanism 320.

Further, the clamping groove 221 may be provided with an opening 2211. In this embodiment, the mounting portion 1 enters the clamping groove 221 through the opening 2211 or moves out of the clamping groove 221 through the opening 2211, so that the mounting portion 1 is connected to the clamping groove 221 correspondingly. Locking and separation of slot 221. In addition, in order to prevent the driving mechanism 320 from driving the propeller 310 to rotate, the mounting portion 1 is separated from the locking groove 221 and causing the propeller to shoot, the locking portion 22 of this embodiment includes a limiting portion 222, and the limiting portion 222 is provided in the locking slot The side of the 221 away from the opening 2211, and the limiting portion 222 is used for limiting the movement of the mounting portion 1 relative to the clamping groove 221. For example, when the propeller 310 is locked on the driving mechanism 320, the operating mounting portion 1 rotates in the first direction (such as clockwise), so that the mounting portion 1 rotates to the locked position relative to the locking groove 221. When the slot 221 is in the locked position, the limiting portion 222 can restrict the mounting portion 1 to continue to rotate in the first direction, thereby clamping the mounting portion 1 in the clamping slot 221. Further, the locking portion 22 may further include a stop portion 2212 provided in the opening portion 2211. The stop portion 2212 of this embodiment may be an elastic member, which follows the relative rotation of the mounting portion 1 and the clamping groove 221 , The mounting portion 1 can squeeze the stop portion 2212 to deform the stop portion 2212, so that the mounting portion 1 enters the clamping groove 221 or moves out of the clamping groove 221. When the driving mechanism 320 drives the propeller 310 to rotate, the stopper portion 2212 can stop the mounting portion 1 in the locking groove 221 to prevent the mounting portion 1 from moving out of the opening portion 2211 to cause the propeller to shoot. Optionally, the height of the stop portion 2212 is smaller than the height of the limit portion 222. When the propeller 310 is installed on the driving mechanism 320, such a design facilitates the passage of the installation portion 1 through the opening 2211, thereby accelerating the installation speed.

The number of the locking parts 22 can be set as required, and the locking parts 22 can include one or more. In some embodiments, the locking portion 22 includes a plurality of, for example, two, three, or more than three, so as to improve the stability of the connection between the mounting portion 1 and the locking portion 22 and reduce the risk of propeller shooting. In this embodiment, a plurality of locking portions 22 are arranged on the inner side wall of the main body portion 21 at intervals along the same circumference.

In addition, the hub 311 of this embodiment is provided with a first mounting hole 3111, and the drive shaft 321 is fixedly fitted with the first mounting hole 3111 through a quick-release member 330. Optionally, an elastic part is provided on the driving shaft 321, and the elastic part is press-fitted with the first mounting hole 3111 to realize a stable connection between the driving shaft 321 and the propeller hub 311. Through the cooperation between the drive shaft 321 and the first mounting hole 3111 and the cooperation between the mounting part 1 and the locking part 22, the propeller 310 is stably connected to the driving mechanism 320, which can effectively prevent the propeller from being shot.

Referring to FIGS. 2, 3, 5B, 5C, 6 and 8, the locking mechanism 2 may further include a connecting portion 23 connected to the inner side wall of the main body portion 21. In this embodiment, the connecting portion 23 is provided with a second mounting hole 231, and the driving shaft 321 is fixedly fitted with the first mounting hole 3111 after passing through the second mounting hole 231.

Further, the connecting portion 23 can be detachably connected to the housing of a power device such as a motor by a connecting member such as screws, so as to connect the locking mechanism 2 to the power device.

Please refer to Figures 1-4, 6 and 7, the mounting portion 1 may include an adapter portion 11 and a clamping portion 12, wherein the adapter portion 11 is connected to or formed on the bottom of the hub 311, it should be noted that In the present invention, when the propeller 310 is installed on the driving mechanism 320, the bottom of the propeller hub 311 refers to the side of the propeller hub 311 facing the locking mechanism 2. The clamping portion 12 is connected to the adapter portion 11, the adapter portion 11 and the clamping portion 12 in this embodiment are bent and arranged, and the clamping portion 12 protrudes from the side wall of the hub 311. The embodiment in which the locking portion 22 includes the clamping groove 221 is used. In the locked position, the clamping portion 12 is engaged with the clamping groove 221; in the unlocked position, the clamping portion 12 is separated from the clamping groove 221.

Optionally, the adapter portion 11 and the clamping portion 12 are arranged vertically. Of course, the angle between the adapter portion 11 and the clamping portion 12 can also be other angles.

In this embodiment, the number of the mounting parts 1 is equal to the number of the locking parts 22, and the mounting parts 1 and the locking parts 22 are matched correspondingly. For example, in some embodiments, both the mounting part 1 and the locking part 22 include one. In other embodiments, each of the mounting portion 1 and the locking portion 22 includes multiple, such as two, the multiple mounting portions 1 are arranged at intervals along the same circumference, and the multiple mounting portions 1 surround the first mounting hole 3111, which is designed in this way, The installation part 1 and the locking mechanism 2 are installed more firmly, which can effectively prevent the risk of propeller shooting.

The embodiment of the present invention also provides a propeller assembly. The propeller assembly may include a first propeller assembly and a second propeller assembly. The first propeller assembly includes a first driving mechanism and a first propeller detachably mounted on the first driving mechanism. The second propeller assembly includes a second driving mechanism and a second propeller that can be detachably mounted on the second driving mechanism. In this embodiment, the first propeller assembly is one of a forward propeller and a reverse propeller, and the second propeller assembly is the other of a forward propeller and a reverse propeller.

The first propeller and the first driving mechanism, and the second propeller and the second driving mechanism can be respectively connected by the above-mentioned quick-release member 330. Among them, for the first propeller assembly and the second propeller assembly, the structure of the quick-release member 330 is different.

Hereinafter, the different parts of the quick-release part 330 in the first propeller assembly and the second propeller assembly will be described in detail.

(1), the first propeller assembly

Referring to Figures 1-3, 5A and 5D, the locking mechanism 2 also includes an anti-error structure 24, which is fixedly connected to the connecting portion 23, and a part of the anti-error structure 24 is located on the main body The part 21 is away from the side of the driving mechanism. The error-preventing structure 24 is provided with a limiting space, and the limiting space is located on the side of the receiving space 211 away from the power device, and the opening size of the limiting space is smaller than the opening size of the receiving space 211.

For the first propeller assembly, the size of the opening of the limiting space is larger than the size of the mounting portion 1. For example, the mounting portion 1 of the first propeller assembly includes multiple, and the multiple mounting portions 1 are arranged at intervals along the same circumference. The size of the opening is larger than the diameter of the outer circumference formed by the mounting portion 1 of the first propeller assembly. When the propeller of the first propeller assembly is installed on the driving mechanism of the first propeller assembly, the installation part 1 of the first propeller assembly can enter the accommodation space 211 through the limiting space, and the installation part 1 of the first propeller assembly can be accommodated in the accommodating space 211. The space 211 rotates relative to the locking portion 22, so that the mounting portion 1 and the locking portion 22 of the first propeller assembly can be switched between the locked position and the unlocked position, so as to realize the detachable assembly of the first propeller and the first driving mechanism.

As for the second propeller assembly, the size of the opening of the limiting space is smaller than the size of the mounting portion 1, which restricts the mounting portion 1 of the second propeller assembly from passing through the limiting space. For example, the mounting portion 1 of the second propeller assembly includes multiple, In addition, a plurality of mounting parts 1 are arranged at intervals along the same circumference, and the size of the opening of the limiting space is smaller than the diameter of the outer circumference formed by the mounting part 1 of the second propeller assembly. Due to the limitation of the size of the opening of the limiting space, the mounting portion 1 of the second propeller assembly cannot enter the receiving space 211 through the limiting space, which prevents the second propeller from being assembled on the first driving mechanism and prevents the user from installing the second propeller by mistake. The first drive mechanism.

The structure of the mounting portion 1 of the first propeller assembly and the second propeller assembly can be designed separately to achieve the above-mentioned size difference. Specifically, referring to FIG. 9, the length of the clamping portion 12 of the mounting portion 1 of the first propeller assembly (A in FIG. 9) is shorter than the clamping portion of the mounting portion 1 of the second propeller assembly (B in FIG. 9) The length of 12.

The error-preventing structure 24 can be designed to realize the detachable connection between the second propeller and the first driving mechanism. For example, in one of the embodiments, the misassembly prevention structure 24 is a deformable structure. For example, the material of the misassembly prevention structure 24 may be an elastic material. The misassembly prevention structure 24 of this embodiment can be deformed under the action of external force, so that The size of the opening of the limit space is increased. When the second propeller is installed on the first driving mechanism, the inner side wall of the anti-installation structure 24 can be supported by external force, so that the size of the opening of the limiting space is increased. When the size of the opening of the limiting space is increased to be larger than that of the first driving mechanism When the outer edge of the mounting part 1 of the two propeller assembly is located at the diameter of the circumference, the mounting part 1 of the second propeller assembly can be entered into the accommodation space 211 through the limiting space, and the mounting part 1 of the second propeller assembly can be in the accommodation space 211 Rotating relative to the locking part 22 causes the mounting part 1 and the locking part 22 of the second propeller assembly to switch between the locked position and the unlocked position, so as to realize the detachable assembly of the second propeller and the first driving mechanism.

In another embodiment, the mistake-proof structure 24 is detachably installed on the side of the main body 21 away from the driving mechanism. After the error-preventing structure 24 is removed from the main body 21, the mounting part 1 of the second propeller assembly can enter the accommodating space 211, and the mounting part 1 of the second propeller assembly can rotate relative to the locking part 22 in the accommodating space 211, The installation part 1 and the locking part 22 of the second propeller assembly are switched between the locked position and the unlocked position, so as to realize the detachable assembly of the second propeller and the first driving mechanism.

Of course, the misassembly prevention structure 24 can also be designed in other forms to realize the detachable connection between the second propeller and the first driving mechanism.

The mating manner of the anti-misassembly structure 24 and the main body 21 can be designed according to needs. In this embodiment, the main body 21 is provided with a mounting groove 212 on the side away from the driving mechanism, and a part of the anti-misassembly structure 24 is received in the installation groove 212 . The installation groove 212 of this embodiment is adjacent to the locking portion 22, and the installation groove 212 is correspondingly provided on one side of the locking portion 22.

Optionally, referring to FIG. 4, the installation groove 212 includes a plurality of installation grooves 212, and the plurality of installation grooves 212 are arranged at intervals. The incorrect assembly prevention structure 24 includes a fixing portion 241 and an incorrect assembly prevention block 242, wherein the fixing portion 241 is connected to the connecting portion 23, for example, the connecting portion 241 and the connecting portion 23 are connected by screwing, clamping or other means. The wrong installation preventing block 242 is provided on the fixing portion 241. The wrong installation preventing block 242 of this embodiment includes a plurality of the wrong installation preventing blocks 242 arranged at intervals along the same circumference, and the plurality of wrong installation preventing blocks 242 are surrounded to form a limit. In the space, the error prevention block 242 is received in the corresponding installation slot 212.

Optionally, each installation groove 212 includes a first installation groove 2121 and a second installation groove 2122 adjacent to the first installation groove 2121. The depth of the first installation groove 2121 is greater than the depth of the second installation groove 2122, thereby preventing installation The staggered structure 24 is more firmly fixed on the main body 21. In this embodiment, the part of the anti-error block 242 connected with the fixing portion 241 is embedded in the first installation groove 2121, and the other part of the anti-error block 242 is embedded in the second installation groove 2122.

In addition, referring to FIGS. 5A and 5D, the fixing portion 241 of this embodiment is provided with a third mounting hole 2411, and the drive shaft 321 is fixed to the first mounting hole 3111 after sequentially passing through the second mounting hole 231 and the third mounting hole 2411. Cooperate.

1 and 4, for the first propeller assembly, the bottom surface of the hub 311 is provided with a first protrusion 313. Specifically, the first protrusion 313 is located between the adapter portion 11 and the first mounting hole 3111.

6 and 8, for the second propeller assembly, the side of the connecting portion 23 away from the power unit is provided with a second protrusion 25, the second protrusion 25 is received in the receiving space 211, and the second protrusion 25 is provided Between the locking portion 22 and the second mounting hole 231. When the first propeller is installed on the second driving mechanism, the first protrusion 313 and the second protrusion 25 interfere to restrict the first propeller and the second driving mechanism in the unlocked position, so that the first propeller cannot be locked in the second On the drive mechanism. The first protrusion 313 and the second protrusion 25 interfere, so that the mounting portion 1 of the first propeller assembly cannot rotate relative to the locking portion 22 of the second driving mechanism, thereby restricting the first propeller and the second driving mechanism to the unlocked position.

The first protrusion 313 may include one or more. Optionally, the first protrusion 313 includes a plurality of, such as two. Please refer to FIG. 4, the plurality of first protrusions 313 are located at the corresponding adapter portion 11 and the first protrusion 313. Between mounting holes 3111. In the embodiment where the first protrusion 313 includes multiple, the second protrusion 25 also includes multiple. When the first propeller is mounted on the second driving mechanism, the first protrusion 313 corresponds to the second protrusion 25 put one's oar in.

2 and 5B, the side of the connecting portion 23 away from the driving mechanism is a flat structure. When the first propeller is installed on the first driving mechanism, the first driving mechanism will not interfere with the first protrusion 313. Therefore, the mounting portion 1 of the first propeller assembly can rotate relative to the locking portion 22 in the receiving space 211 , The mounting part 1 and the locking part 22 of the first propeller assembly are switched between the locked position and the unlocked position, so as to realize the detachable assembly of the first propeller and the first driving mechanism.

(2), the second propeller assembly

6 and 8, a second protrusion 25 is provided on the side of the connecting portion 23 away from the driving mechanism. The second protrusion 25 is received in the accommodating space 211, and the second protrusion 25 is provided on the locking portion 22 and the second protrusion 25. Between the two mounting holes 231. The second protrusion 25 may include one or more. Optionally, the second protrusion 25 includes multiple, such as two, the locking portion 22 includes multiple, and the second protrusion 25 is provided on the corresponding locking portion 22 and the second protrusion. Between the mounting holes 231.

Please refer to FIG. 9, the bottom surface of the hub 311 is a flat structure. When the second propeller is installed on the second driving mechanism, the second propeller will not interfere with the second protrusion 25. Therefore, the installation part 1 of the second propeller assembly can rotate relative to the locking part 22 in the accommodating space, so that The mounting part 1 and the locking part 22 of the second propeller assembly are switched between the locked position and the unlocked position, so as to realize the detachable assembly of the second propeller and the second driving mechanism.

By providing a first protrusion 313 on the hub 311 of the first propeller assembly, and a second protrusion 25 on the connecting portion 23 of the second propeller assembly, through the interference of the first protrusion 313 and the second protrusion 25, So that the first propeller cannot be installed on the second driving mechanism, while both the first propeller and the second propeller can be installed on the first driving mechanism, and the second propeller can be installed on the second driving mechanism. After the propeller is incorrectly installed on the first driving mechanism, since the first propeller cannot be installed on the second driving mechanism, the user can quickly replace it to prevent the first propeller assembly and the second propeller assembly from being installed incorrectly, that is, it can be easily and quickly Install the forward and reverse propellers on the corresponding drive mechanism to prevent the wrong installation of the forward and reverse propellers and improve the user experience.

It is worth mentioning that the propeller assembly of this embodiment can be used as a power propeller for aircraft or ships.

Referring to FIG. 10, an embodiment of the present invention also provides a multi-rotor unmanned aerial vehicle. The multi-rotor unmanned aerial vehicle includes a fuselage 100, an arm 200 connected to the fuselage 100, and a propeller assembly 300.

The propeller assembly 300 is the same as the propeller assembly in the above embodiment. For example, in some embodiments, the rotor UAV includes a first propeller assembly or a second propeller assembly, and the first propeller assembly or the second propeller assembly is connected to the end of the arm 200 away from the fuselage 100. In other embodiments, the rotor UAV includes a first propeller assembly and a second propeller assembly, and the first propeller assembly and the second propeller assembly are connected to the end of the arm 200 away from the fuselage 100.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply one of these entities or operations. There is any such actual relationship or order between. The terms "including", "including" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements that are not explicitly listed. Elements, or also include elements inherent to such processes, methods, articles, or equipment. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, article, or equipment that includes the element.

The propeller assembly provided by the embodiments of the present invention and the multi-rotor unmanned aerial vehicle having the same are described above. Specific examples are used in this article to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for To help understand the method and core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and the scope of application. In summary, the content of this specification It should not be understood as a limitation to the present invention.

Claims

A quick-release part for detachably installing a propeller on a driving mechanism, characterized in that the quick-release part includes a mounting part connected to or formed on one of the propeller and the driving mechanism and forming A locking mechanism connected to or connected to the other of the propeller and the driving mechanism;

The locking mechanism includes a main body part and a locking part, the main body part is connected with the driving mechanism, and the main body part is provided with a receiving space, and the locking part is at least partially located in the receiving space;

The mounting part can be accommodated in the accommodating space, and rotate relative to the locking part in the accommodating space, so that the mounting part and the locking part can be switched between a locked position and an unlocked position, correspondingly The propeller and the driving mechanism are switched between a locked state and an unlocked state.
The quick-release part according to claim 1, wherein the locking portion includes a clamping groove;

With the relative rotation of the mounting portion and the clamping groove, the mounting portion enters the clamping groove to cooperate with the clamping groove or moves out of the clamping groove to be in contact with the clamping groove. Separate and correspond to each other so that the mounting part and the locking part are in a locked position or an unlocked position.
The quick release part according to claim 2, wherein the clamping groove is provided with an opening, and the mounting portion enters the clamping groove from the opening or moves out of the card from the opening. Socket

The locking portion includes a limiting portion, the limiting portion is provided on a side of the clamping groove away from the opening portion, and the limiting portion is used to restrict the mounting portion from moving relative to the clamping groove.
The quick release part according to claim 1 or 2 or 3, wherein the locking part comprises a plurality of locking parts, and the plurality of locking parts are arranged on the inner side wall of the main body part along the same circumference at intervals.
The quick release part according to claim 1, wherein the propeller includes a hub, the mounting portion is connected to or formed on the hub, and the locking mechanism is connected to or formed on the driving mechanism.
The quick release component according to claim 5, wherein the driving mechanism comprises a driving shaft;

The locking mechanism further includes a connecting part connected with the inner side wall of the main body part;

The corresponding position of the propeller hub is provided with a first mounting hole, the connecting portion is provided with a second mounting hole, and the drive shaft of the driving mechanism is fixed to the first mounting hole after passing through the second mounting hole connection.
The quick release component according to claim 6, wherein the side of the connecting portion away from the driving mechanism is a flat structure.
The quick release component according to claim 6, wherein the locking mechanism further comprises an anti-error structure, the anti-error structure is fixedly connected to the connecting portion, and a part of the anti-error structure Located on the side of the main body away from the driving mechanism;

The error-preventing structure is provided with a limiting space, the limiting space is located on a side of the receiving space away from the driving mechanism, and the size of the opening of the limiting space is smaller than the size of the opening of the receiving space.
The quick release part according to claim 8, wherein the anti-misassembly structure is a deformable structure; the anti-misassembly structure can be deformed under the action of an external force, so that the size of the opening of the limit space is increased .
8. The quick release component according to claim 8, wherein the anti-misassembly structure is detachably installed on a side of the main body part away from the driving mechanism.
8. The quick release component according to claim 8, wherein a mounting groove is provided on the side of the main body away from the driving mechanism, and a part of the anti-mismounting structure is received in the mounting groove.
The quick release part according to claim 11, wherein the installation groove comprises a plurality of installation grooves, and the plurality of installation grooves are arranged at intervals;

The anti-misassembly structure includes a fixing part connected to the connecting part and a plurality of misassembly prevention blocks arranged on the fixing part, and the plurality of the misassembly prevention blocks are arranged at intervals along the same circumference, and a plurality of The anti-error block surrounds and forms the limit space, and the anti-error block is received in a corresponding installation slot.
The quick release part according to claim 12, wherein each installation groove comprises a first installation groove and a second installation groove adjacent to the first installation groove, and the depth of the first installation groove is greater than that of the The depth of the second mounting groove.
The quick release component according to claim 6, wherein a first protrusion is provided on the side of the connecting portion away from the driving mechanism, and the first protrusion is received in the receiving space, and the first protrusion is received in the receiving space. The first protrusion is provided between the locking portion and the second mounting hole.
The quick release part according to claim 14, wherein the first protrusion includes a plurality of parts, the locking part includes a plurality of parts, and the first protrusion is provided on the corresponding locking part and the second mounting part. Between holes.
The quick release part according to claim 6, wherein the mounting part comprises an adapter part connected to or formed at the bottom of the propeller hub and a clamping part connected with the adapter part;

The adapter portion and the clamping portion are bent and arranged, and the clamping portion protrudes from the side wall of the hub.
The quick release component according to claim 16, wherein the adapter part and the clamping part are vertically arranged.
The quick release part according to claim 16, wherein the mounting part comprises a plurality of mounting parts, the mounting parts are arranged at intervals along the same circumference, and the mounting parts surround the first mounting hole.
A propeller assembly, characterized in that the propeller assembly includes:

A propeller, including a hub and blades installed on the side wall of the hub;

Drive mechanism, including drive shaft; and

The quick-release part according to any one of claims 1 to 18, wherein the drive shaft is connected to the propeller through the quick-release part.
The propeller assembly of claim 19, wherein:

The hub is provided with a first mounting hole, the drive shaft is provided with an elastic part, and the elastic part is press-fitted with the first mounting hole.
The propeller assembly according to claim 19, wherein the bottom surface of the hub is a plane structure.
The propeller assembly according to claim 19, wherein the bottom surface of the hub is provided with a second protrusion.
The propeller assembly according to claim 22, wherein the second protrusion comprises a plurality of.
A multi-rotor unmanned aerial vehicle, characterized in that the multi-rotor unmanned aerial vehicle comprises:

body;

An arm connected to the fuselage; and

The propeller assembly according to any one of claims 19 to 23, wherein the propeller assembly is connected to an end of the arm away from the fuselage.
A propeller assembly, characterized in that the propeller assembly includes:

The propeller includes a hub, blades connected to the side wall of the hub, a mounting portion provided on the bottom of the hub, and a protrusion provided on the bottom surface of the hub, the hub provided with a first mounting Hole; and

The driving mechanism includes a power device and a locking mechanism provided on the power device, the power device includes a drive shaft, the drive shaft passes through the locking mechanism and is fixedly connected to the first mounting hole;

The locking mechanism includes a main body part and a locking part, the main body part is connected to the power device, and the main body part is provided with a receiving space, and the locking part is at least partially located in the receiving space;

The mounting part can be accommodated in the accommodating space, and rotate relative to the locking part in the accommodating space, so that the mounting part and the locking part can be switched between a locked position and an unlocked position, correspondingly The propeller and the driving mechanism are switched between a locked state and an unlocked state.
The propeller assembly according to claim 25, wherein the locking portion comprises a clamping groove;

With the relative rotation of the mounting portion and the clamping groove, the mounting portion enters the clamping groove to cooperate with the clamping groove or moves out of the clamping groove to be in contact with the clamping groove. Separate and correspond to each other so that the mounting part and the locking part are in a locked position or an unlocked position.
The propeller assembly according to claim 26, wherein the clamping groove is provided with an opening, and the mounting portion enters the clamping groove from the opening or moves out of the clamping groove from the opening. groove;

The locking portion includes a limiting portion, the limiting portion is provided on a side of the clamping groove away from the opening portion, and the limiting portion is used to restrict the mounting portion from moving relative to the clamping groove.
The propeller assembly according to claim 25, 26 or 27, wherein the locking part comprises a plurality of locking parts, and the plurality of locking parts are arranged on the inner side wall of the main body part along the same circumference at intervals.
The propeller assembly according to claim 25, wherein the locking mechanism further comprises a connecting portion connected with the inner side wall of the main body portion, and a second mounting hole is provided on the connecting portion;

The drive shaft is fixedly connected with the first mounting hole after passing through the second mounting hole.
The propeller assembly according to claim 29, wherein the side of the connecting portion away from the power device is a flat structure.
The propeller assembly according to claim 29, wherein the locking mechanism further comprises an anti-error structure, the anti-error structure is fixedly connected to the connecting portion, and a part of the anti-error structure is provided On the side of the main body away from the driving mechanism;

The error-preventing structure is provided with a limiting space, the limiting space is located on a side of the receiving space away from the power device, and the size of the opening of the limiting space is smaller than the size of the opening of the receiving space;

The mounting part can pass through the limiting space and enter the receiving space.
The propeller assembly according to claim 31, wherein the anti-misassembly structure is a deformable structure; the anti-misassembly structure can be deformed under the action of an external force, so that the size of the opening of the limit space is increased.
The propeller assembly according to claim 31, wherein the anti-error structure is detachably installed on a side of the main body away from the driving mechanism.
The propeller assembly according to claim 31, wherein a side of the main body part away from the driving mechanism is provided with a mounting groove, and a part of the anti-mismounting structure is received in the mounting groove.
The propeller assembly according to claim 34, wherein the installation groove comprises a plurality of installation grooves, and the plurality of installation grooves are arranged at intervals;

The anti-misassembly structure includes a fixing part connected to the connecting part and a plurality of misassembly prevention blocks arranged on the fixing part, and the plurality of the misassembly prevention blocks are arranged at intervals along the same circumference, and a plurality of The anti-error block surrounds and forms the limit space, and the anti-error block is received in a corresponding installation slot.
The propeller assembly according to claim 35, wherein each installation groove comprises a first installation groove and a second installation groove adjacent to the first installation groove, and the depth of the first installation groove is greater than that of the first installation groove. 2. The depth of the installation groove.
The propeller assembly according to claim 31, wherein the mounting part comprises an adapter part connected or formed at the bottom of the propeller hub and a clamping part connected with the adapter part;

The adapter portion and the clamping portion are bent and arranged, and the clamping portion protrudes from the side wall of the hub.
The propeller assembly according to claim 37, wherein the adapter part and the clamping part are vertically arranged.
The propeller assembly according to claim 37, wherein the mounting part comprises a plurality of mounting parts, the mounting parts are arranged at intervals along the same circumference, and the diameter of the outer circumference formed by the mounting parts is smaller than that of the The size of the opening of the limit space.
The propeller assembly according to claim 39, wherein the protrusion is located between the adapter portion and the first mounting hole.
The propeller assembly according to claim 40, wherein the protrusion comprises a plurality of protrusions, and the plurality of second protrusions are located between the corresponding adapter portion and the first mounting hole.
A multi-rotor unmanned aerial vehicle, characterized in that the multi-rotor unmanned aerial vehicle comprises:

body;

An arm connected to the fuselage; and

The propeller assembly according to any one of claims 25 to 41, which is connected to an end of the arm away from the fuselage.
A propeller assembly, characterized in that the propeller assembly includes:

The propeller includes a hub, blades connected to the side wall of the hub, and a mounting portion provided at the bottom of the hub, the hub is provided with a first mounting hole, and the bottom surface of the hub is a flat surface Structure; and

The driving mechanism includes a power device and a locking mechanism provided on the power device, the power device includes a drive shaft, the drive shaft passes through the locking mechanism and is fixedly connected to the first mounting hole;

The locking mechanism includes a main body part and a locking part, the main body part is connected with the power device, and the main body part is provided with a receiving space, and the locking part is at least partially located in the receiving space;

The mounting part can be accommodated in the accommodating space, and rotate relative to the locking part in the accommodating space, so that the mounting part and the locking part can be switched between a locked position and an unlocked position, correspondingly The propeller and the driving mechanism are switched between a locked state and an unlocked state.
The propeller assembly according to claim 43, wherein the locking portion comprises a clamping groove;

With the relative rotation of the mounting portion and the clamping groove, the mounting portion enters the clamping groove to cooperate with the clamping groove or moves out of the clamping groove to be in contact with the clamping groove. Separate and correspond to each other so that the mounting part and the locking part are in a locked position or an unlocked position.
The propeller assembly according to claim 44, wherein the clamping groove is provided with an opening, and the mounting portion enters the clamping groove from the opening or moves out of the clamping groove from the opening. groove;

The locking portion includes a limiting portion, the limiting portion is provided on a side of the clamping groove away from the opening portion, and the limiting portion is used to restrict the mounting portion from moving relative to the clamping groove.
The propeller assembly according to claim 43, 44, or 45, wherein the locking portion comprises a plurality of locking portions, and the plurality of locking portions are arranged on the inner side wall of the main body portion along the same circumference at intervals.
The propeller assembly according to claim 43, wherein the locking mechanism further comprises a connecting portion connected with the inner side wall of the main body portion, and a second mounting hole is provided on the connecting portion;

The drive shaft is fixedly connected with the first mounting hole after passing through the second mounting hole.
The propeller assembly according to claim 47, wherein a side of the connecting portion away from the power device is provided with a protrusion, the protrusion is accommodated in the containing space, and the protrusion is disposed at Between the locking portion and the second mounting hole.
The propeller assembly according to claim 48, wherein the protrusion comprises a plurality, the locking part comprises a plurality, and the protrusion is provided between the corresponding locking part and the second mounting hole.
The propeller assembly according to claim 49, wherein the mounting part comprises an adapter part connected or formed at the bottom of the propeller hub and a clamping part connected with the adapter part;

The adapter portion and the clamping portion are bent and arranged, and the clamping portion protrudes from the side wall of the hub.
The propeller assembly according to claim 50, wherein the adapter part and the clamping part are vertically arranged.
The propeller assembly according to claim 43, wherein the mounting part comprises a plurality of mounting parts, and the mounting parts are arranged at intervals along the same circumference, and the mounting parts surround the first mounting hole.
A multi-rotor unmanned aerial vehicle, characterized in that the multi-rotor unmanned aerial vehicle comprises:

body;

An arm connected to the fuselage; and

The propeller assembly according to any one of claims 43 to 52, which is connected to an end of the arm away from the fuselage.
A propeller assembly, characterized in that the propeller assembly includes:

The first propeller assembly includes a first driving mechanism and a first propeller that can be detachably mounted on the first driving mechanism; and

The second propeller assembly includes a second driving mechanism and a second propeller that can be detachably mounted on the second driving mechanism;

The first propeller assembly is one of a forward propeller and a reverse propeller, and the second propeller assembly is the other of a forward propeller and a reverse propeller;

Wherein, the first propeller is provided with a first protrusion, and the second driving mechanism is provided with a second protrusion. When the first propeller is installed on the second driving mechanism, the first protrusion Interfere with the second protrusion to restrict the first propeller and the second drive mechanism to the unlocked position;

The second propeller can be detachably mounted on the first driving mechanism.
The propeller assembly according to claim 54, wherein the first propeller comprises a first hub, a first blade connected to the side wall of the first hub, and a first blade provided at the bottom of the hub. A mounting portion, the first protrusion is provided on the bottom surface of the first hub, and the first hub is provided with a first mounting hole;

The first drive mechanism includes a first power device and a first locking mechanism provided on the first power device, the first power device includes a first drive shaft, and the first drive shaft passes through the first lock The mechanism is fixedly matched with the first mounting hole;

With the relative rotation of the first mounting portion and the first locking mechanism, the first mounting portion and the first locking portion are switched between the locked position and the unlocked position, so that the first propeller and The first driving mechanism is switched between a locked state and an unlocked state.
The propeller assembly according to claim 55, wherein the first locking mechanism comprises a first body portion and a first locking portion, the first body portion is connected to the first power device, and The first main body portion is provided with a first accommodating space, and the first locking portion is at least partially located in the first accommodating space;

The first mounting portion can rotate relative to the first locking portion in the first accommodating space, so that the first mounting portion and the first locking portion can be switched between a locked position and an unlocked position.
The propeller assembly according to claim 56, wherein the first locking portion comprises a first clamping groove;

With the relative rotation of the first mounting portion and the first clamping groove, the first mounting portion enters the first clamping groove to cooperate with the first clamping groove or from the first clamping groove. The clamping groove is moved out and separated from the first clamping groove, so that the first mounting portion and the first locking portion are in a locked position or an unlocked position correspondingly.
The propeller assembly according to claim 57, wherein the first clamping groove is provided with a first opening, and the first mounting portion enters the first clamping groove through the first opening or Move out of the first clamping slot from the first opening;

The first locking portion includes a first limiting portion, the first limiting portion is provided on a side of the first clamping groove away from the first opening, and the first limiting portion is used for limiting The first mounting portion moves relative to the first clamping groove.
The propeller assembly according to claim 56 or 57 or 58, wherein the first locking part comprises a plurality of the first locking parts arranged on the first main body part at intervals along the same circumference. Inner wall.
The propeller assembly according to claim 56, wherein the first locking mechanism further comprises a first connecting part connected with the inner side wall of the first main body part, and the first connecting part is provided with a first connecting part. Two mounting holes;

The first drive shaft passes through the second mounting hole and is fixedly fitted with the first mounting hole.
The propeller assembly according to claim 60, wherein the side of the first connecting portion away from the first power device is a flat structure.
The propeller assembly according to claim 55, wherein a first elastic portion is provided on the first drive shaft, and the first elastic portion is press-fitted with the first mounting hole.
The propeller assembly according to claim 56, wherein the first locking mechanism further comprises an error-preventing structure at least partly located on the side of the first main body away from the first driving mechanism, and the preventing The wrong installation structure is provided with a limiting space, the limiting space is located on the side of the accommodating space away from the power unit, and the size of the opening of the limiting space is smaller than the size of the opening of the first accommodating space; The size of the opening of the position space is larger than the size of the first mounting portion, so that the first mounting portion can pass through the limiting space and enter the first receiving space.
The propeller assembly according to claim 63, wherein the first mounting portion comprises a first adapter portion connected to or formed on the bottom of the first propeller hub and connected to the first adapter portion The first clamping portion, the first protrusion is provided between the first adapter portion and the first mounting hole;

The first adapter portion and the first clamping portion are bent and arranged, and the first clamping portion protrudes from the side wall of the first hub.
The propeller assembly according to claim 64, wherein the first adapter portion and the first clamping portion are vertically arranged.
The propeller assembly according to claim 64, wherein the first protrusion comprises a plurality of first protrusions, and the plurality of first protrusions are located between the corresponding first adapter portion and the first mounting hole.
The propeller assembly according to claim 63, wherein the first mounting part comprises a plurality of said first mounting parts, and the plurality of first mounting parts are arranged at intervals along the same circumference;

The size of the opening of the limiting space is larger than the diameter of the outer circumference formed by the plurality of first mounting portions.
The propeller assembly according to claim 63, wherein the second propeller comprises a second hub, a second blade connected to the side wall of the second hub, and a first blade at the bottom of the hub. 2. Installation department;

The size of the opening of the limiting space is smaller than the size of the second mounting portion, and the second mounting portion is restricted from passing through the limiting space.
The propeller assembly according to claim 68, wherein the second mounting portion comprises a second adapter portion connected to or formed at the bottom of the second propeller hub and connected to the second adapter portion的 second card connector;

The second adapter portion and the second clamping portion are bent and arranged, and the second clamping portion protrudes from the side wall of the second hub.
The propeller assembly according to claim 68, wherein the second mounting part comprises a plurality of second mounting parts, and the plurality of second mounting parts are arranged at intervals along the same circumference;

The size of the opening of the limiting space is smaller than the diameter of the outer circumference formed by the plurality of second mounting portions.
The propeller assembly according to claim 68, wherein the anti-error structure is a deformable structure;

The anti-installation structure can be deformed under the action of external force, so that the size of the opening of the limiting space is increased, so that the second mounting portion can pass through and the second mounting portion can enter the first receiving space , The second mounting portion can rotate relative to the first locking portion in the first accommodating space, so that the second mounting portion and the first locking portion can be switched between a locked position and an unlocked position so that The second propeller can be detachably mounted on the first driving mechanism.
The propeller assembly according to claim 68, wherein the error-preventing structure is detachably installed on a side of the first main body away from the first driving mechanism;

After the error-preventing structure is detached from the first main body portion, the second mounting portion can enter the first accommodating space, and the second mounting portion can be in the first accommodating space Rotate relative to the first locking portion, so that the second mounting portion and the first locking portion are switched between a locked position and an unlocked position, so that the second propeller can be detachably mounted on the first drive mechanism.
The propeller assembly according to claim 63, wherein a side of the first main body part away from the first driving mechanism is provided with a mounting groove, and a part of the anti-mismounting structure is received in the mounting groove .
The propeller assembly according to claim 73, wherein the installation groove comprises a plurality of installation grooves, and the plurality of installation grooves are arranged at intervals;

The anti-misassembly structure includes a fixing part and a plurality of anti-misassembly blocks arranged on the fixing part, and the plurality of the anti-assembly blocks are arranged at intervals along the same circumference, and the plurality of the anti-assembly blocks are surrounded by The limit space is formed, and the error-preventing block is accommodated in the corresponding installation slot.
The propeller assembly according to claim 74, wherein each installation groove comprises a first installation groove and a second installation groove adjacent to the first installation groove, and the depth of the first installation groove is greater than that of the first installation groove. 2. The depth of the installation groove.
The propeller assembly according to claim 54, wherein the second propeller comprises a second hub, a second blade connected to the second hub, and a second installation provided at the bottom of the hub Part, the second hub is provided with a third mounting hole;

The second drive mechanism includes a second power device and a second locking mechanism provided on the second power device, the second power device includes a second drive shaft, and the second drive shaft passes through the first drive shaft. The second locking mechanism is fixedly matched with the third mounting hole;

With the relative rotation of the second mounting part and the second locking part, the second mounting part and the second locking part are switched between the locked position and the unlocked position, correspondingly making the second propeller and The second driving mechanism is switched between a locked state and an unlocked state.
The propeller assembly according to claim 76, wherein the second locking mechanism comprises a second body portion and a second locking portion, the second body portion is connected to the second driving mechanism, and the The second main body portion is provided with a second receiving space, and the second locking portion is at least partially located in the second receiving space;

The second mounting part can be accommodated in the second accommodating space, and rotates relative to the second locking part in the second accommodating space, so that the second mounting part and the second locking part are in contact with each other. Switch between locked position and unlocked position.
The propeller assembly according to claim 77, wherein the second locking portion comprises a second clamping groove;

With the relative rotation of the second mounting portion and the second clamping groove, the second mounting portion enters the second clamping groove to cooperate with the second clamping groove or from the second clamping groove. The clamping groove is moved out and separated from the second clamping groove, so that the second mounting portion and the locking portion are in a locked position or an unlocked position correspondingly.
The propeller assembly according to claim 78, wherein the second clamping groove is provided with a second opening, and the second mounting portion enters the second clamping groove through the second opening or Move out of the second clamping slot from the second opening;

The second locking portion includes a second limiting portion, the second limiting portion is provided on a side of the second clamping groove away from the second opening, and the second limiting portion is used for limiting The second mounting portion moves relative to the second clamping groove.
The propeller assembly according to claim 77 or 78 or 79, wherein the second locking portion comprises a plurality of second locking portions arranged on the second main body portion at intervals along the same circumference. Inner wall.
The propeller assembly according to claim 77, wherein the second locking mechanism further comprises a second connecting part connected with the inner side wall of the second main body part;

The second connecting portion is provided with a fourth mounting hole, and the second drive shaft is fixedly fitted with the third mounting hole after passing through the fourth mounting hole;

The second protrusion is provided on a side of the second connecting portion away from the second power device, the second protrusion is received in the second accommodating space, and the second protrusion is provided at Between the second locking portion and the third mounting hole.
The propeller assembly according to claim 81, wherein a second elastic portion is provided on the second drive shaft, and the second elastic portion is press-fitted with the third mounting hole.
The propeller assembly according to claim 81, wherein the first protrusion includes a plurality of, the second locking portion includes a plurality of, and the first protrusion is provided corresponding to the second locking portion and the Between the fourth mounting holes.
The propeller assembly according to claim 76, wherein the second mounting portion is connected to or formed at a second adapter portion at the bottom of the second mounting body and a second adapter portion connected to the second adapter portion. Second card connector;

The second adapter portion and the second clamping portion are bent and arranged, and the second clamping portion protrudes from the side wall of the second installation body.
The propeller assembly according to claim 84, wherein the second adapter portion and the second clamping portion are vertically arranged.
The propeller assembly according to claim 84, wherein the second mounting portion comprises a plurality of second mounting portions, and the plurality of second mounting portions are arranged at intervals along the same circumference, and the plurality of second mounting portions surround the The third mounting hole.
The propeller assembly according to claim 84, wherein the bottom surface of the second hub is a plane structure.
A multi-rotor unmanned aerial vehicle, said multi-rotor unmanned aerial vehicle comprising:

body;

An arm connected to the fuselage; and

The propeller assembly according to any one of claims 54 to 87, wherein the first propeller assembly and the second propeller assembly are connected to an end of the arm away from the fuselage.