WO2018107956A1

WO2018107956A1 - Unmanned aerial vehicle and power assembly thereof, propeller and propeller base assembly

Info

Publication number: WO2018107956A1
Application number: PCT/CN2017/113153
Authority: WO
Inventors: 胡亮军; 邱龙学
Original assignee: 深圳市道通智能航空技术有限公司
Priority date: 2016-12-14
Filing date: 2017-11-27
Publication date: 2018-06-21
Also published as: CN106628165B; CN106628165A

Abstract

Provided in the present invention is an unmanned aerial vehicle and a power assembly thereof, a propeller and a propeller base assembly. The power assembly comprises a drive device, a propeller, and a propeller base assembly. The propeller base assembly is used for fixing the propeller onto the drive device. The propeller base assembly comprises a fixing base and a button switch. The fixing base has an engagement portion which is used for rotatably engaging with an engaging piece of the propeller. The button switch has a button body which is suitable for pressing and a button stopper which is fixed on the button body. Several positioning structures are formed on the side of the propeller which faces the drive device, and the several positioning structures correspond to the button stopper when a base body is in an engaged position. The button stopper, under a state in which it is not pressed by an external force, is suitable for being embedded in the position structures, and is engaged between the fixing base and the base body, such that the movement of the propeller in the circumferential direction is limited by the button stopper and positioning grooves, this limiting force being different from the limiting force suffered in the axial direction, thereby improving the mechanical strength, and having the effect of good stability.

Description

Unmanned aerial vehicle and its power components, propeller and propeller base assembly

This application claims priority to Chinese Patent Application No. 201611157265.8, filed on December 14, 2016, and entitled "Aircraft and its propeller quick release device, quick release propeller and propeller base assembly". All contents are incorporated by reference in this application

Technical field

The present application relates to the field of propellers, and in particular to an unmanned aerial vehicle and its power components, propeller and propeller base assembly.

Background technique

A propeller is a device that converts the rotational power of the engine into propulsion by rotating the blade in air or water. Two or more blades may be connected to the seat, and the backward side of the blade is a helix or approximately A propeller device with a spiral surface that is widely used in unmanned aerial vehicles. At present, a common propeller structure of an unmanned aerial vehicle generally includes a seat body and a blade mounted on the seat body, wherein the seat body is coupled to a rotating shaft of the engine, and the rotating shaft rotates under the action of the power machine to drive the blades to rotate together, thereby pushing Unmanned aerial vehicle flying. For a small removable UAV, usually the through hole is passed between the seat and the rotating shaft through the through hole of the seat body, and then the screw shaft and the seat body are screwed together by the nut, so the installation thereof And disassembly requires the use of tools to operate, which is cumbersome to use. At the same time, when the motor of the unmanned aerial vehicle rotates at a high speed, the existing thread and the thread structure are installed and matched, which may cause the propeller phenomenon (ie, the propeller is separated from the motor), and the propeller phenomenon may cause the unmanned aircraft to explode. .

In addition, for the existing quick-release propellers, a claw-shaped holding member is often disposed on the propeller hub, and a corresponding card slot is provided on the fixed surface of the motor, and the rotation of the propeller is fixed to the motor by fixing it. On the surface, the retaining member is abutted by the elastic member to prevent the propeller from being released from the motor. Applicant has found that for the existing quick-release propeller, after it is connected to the fixing surface of the motor, the retaining member is engaged in the card slot by the retaining member and is abutted by the elastic member to limit the propeller in the rotating direction. Rotation, therefore, all the forces generated by the connection between the propeller and the motor are absorbed by the holding member, which easily causes the structure of the portion to be damaged by fatigue.

Summary of the invention

Therefore, the technical problem to be solved by the present application is that all the forces generated by the propeller of the unmanned aerial vehicle of the prior art due to the connection between the propeller and the base are received by the holding member of the propeller, thereby causing the holding pole. Technical defects that are easily damaged by fatigue.

In order to solve the above technical problem, the embodiment of the present application provides the following technical solutions:

A propeller base assembly for securing a propeller to a drive assembly, the propeller mount assembly comprising:

The fixing base is fixedly connected to the main body of the driving device, and the fixing base has a locking portion for rotationally engaging with the engaging member of the propeller;

a push button switch is disposed on the fixed seat in a circumferentially fixed and axially sliding manner, and has a button body adapted to be touched and a button stop fixed on the button body;

Wherein, when the button switch is not pressed by an external force, the button stopper is located at a first position axially extending from the fixing seat and restricting rotation of the propeller relative to the fixing seat; when the button switch is subjected to When the external force is pressed, the button stopper is located at a second position that is retracted into the fixed seat and releases the restriction on the rotation of the propeller relative to the fixed seat.

In some embodiments, the propeller base assembly further includes a resetting member that applies a restoring force to the button body when the button body is pressed by an external force to slide relative to the axial direction of the fixed seat.

In some embodiments, the reset member is a spring.

In some embodiments, a side of the propeller facing the driving device is formed with a positioning structure corresponding to the button stopper, and when the button stopper is in the first position, the button stopper A snap is retained in the positioning structure to limit rotation of the propeller relative to the drive.

In some embodiments, the button stop corresponds to the number of the positioning structures, and is respectively disposed at a corresponding corresponding position of the fixed seat and the seat body of the propeller; A position is adapted to be embedded in the positioning structure and is retained between the mount and the base.

In some embodiments, the locating structure is a plurality of locating slots recessed inwardly from a seat of the propeller toward a side of the drive.

In some embodiments, the button body is cylindrical, and the plurality of button stops are radially outwardly convexly disposed on an outer circumferential surface of the button body; the fixing seat is axially opened in the middle portion. a first through hole; a sidewall of the first through hole is formed with a radially outwardly recessed through groove; the button body is slidably disposed in the first through hole, and the button block slides Grounded in the through slot.

In some embodiments, the seat body is axially provided with a second through hole, the first through hole is axially aligned with the second through hole, and the button body is adapted to be in the second through hole (3012) Medium axial movement.

In some embodiments, a bottom portion of the outer surface of the push button switch between adjacent ones of the button stops is formed with an outwardly protruding abutting top; an inner wall of the first through hole of the fixing seat corresponds to The abutting top is provided with an inwardly projecting abutting wall, and the abutting top abuts the abutting wall.

In some embodiments, the outer diameter of the abutting top is less than or equal to the outer diameter of the button stop, and the abutting top is received in the first through hole.

In some embodiments, an outer diameter of the abutting top is larger than an outer diameter of the button stopper; an inner wall of the first through hole is recessed inwardly corresponding to the abutting top to form a plurality of abutting grooves, and the The top is inserted in the abutment groove.

In some embodiments, the engaging portion is a plurality of circumferentially evenly spaced mounting slots formed in the mounting seat.

In some embodiments, the mounting groove is further provided with a limiting wall that limits the axial movement of the propeller relative to the fixed seat.

In order to solve the above technical problem, the embodiment of the present application further provides the following technical solutions:

A propeller for securing to a drive through a propeller mount assembly, comprising:

Seat; and

At least two blades, the at least two blades being uniformly distributed circumferentially on the seat;

Forming a positioning structure toward a side of the driving device, the positioning structure is blocked by the component protruding on the driving device toward the seat body to block rotation of the seat body relative to the driving device .

In some embodiments, the locating structure is a plurality of locating slots recessed inwardly from the seat toward the side of the drive.

In some embodiments, the base body is further provided for rotating with the propeller base assembly The card connector of the transfer card.

In some embodiments, the clip is a plurality of claw blocks evenly distributed on a surface of the base toward the driving device, and the plurality of claw blocks are axially extended toward the driving device and then bent. extend.

In some embodiments, the positioning structure and the clip are disposed at equal circumferential angles on a surface of the seat facing the drive device.

In some embodiments, the component on the drive that projects toward the seat is the button stop.

A power assembly comprising: a propeller base assembly, a propeller, and a drive device as described above, the propeller being detachably fixed to the propeller base assembly, the propeller mount assembly being fixedly mounted to the drive device, A drive is coupled to the propeller for powering rotation of the propeller.

An unmanned aerial vehicle includes a fuselage, an arm, and a power assembly as described above, the power assembly being coupled to the arm.

The UAV provided by the present application and its power components, propeller and propeller base assembly have the following advantages:

1. The propeller base assembly provided by the present application rotates the propeller to the first position when the propeller is installed, and the button switch is in an external force-free state, and the button stopper axially protrudes from the fixed seat and restricts the rotation of the propeller relative to the fixed seat. Further, the axial fixing of the propeller is realized; when the propeller is disassembled, the button switch is pressed, and the button stopper is located at the second position that is retracted into the fixed seat and releases the restriction on the rotation of the propeller relative to the fixed seat, and the button stopper is not The rotation of the propeller relative to the fixed seat is blocked, and the rotation and disassembly of the propeller can be realized. The restraining of the propeller in the circumferential direction is generated by the expansion and contraction of the button stopper, thereby improving the mechanical strength and bringing about a good stability effect.

2. The propeller base assembly provided by the present application, wherein a plurality of button stoppers are radially outwardly convexly disposed on an outer circumferential surface of the button body, and a sidewall of the first through hole of the fixing seat is formed with a radial outward direction a recessed through slot, the button body is slidably disposed in the first through hole, and the button block is slidably disposed It is placed in the through slot, and when the button switch is disposed on the fixed seat, the relative locking between the button switch and the fixed seat in the circumferential direction is realized by the limit fit between the button stopper and the through slot.

3. The propeller base assembly provided by the present application has an outer surface of the first through hole of the fixing seat corresponding to the top of the top of the button switch, wherein the outer surface of the button switch is formed at the bottom between the adjacent button blocks. The inwardly projecting abutting wall abuts against the top wall in an external force-free state, and then passes through the cooperation between the abutting top and the abutting wall, so that the button switch does not act from the fixing seat due to the elastic force of the resetting member The middle and upward pop-up ensures the assembly stability of the push button switch and the realization of the function.

4. The propeller base assembly provided by the present application has a plurality of circumferentially evenly distributed mounting slots on a side of the mounting base facing the propeller, and an inner wall or an outer wall of the mounting slot is formed in the mounting slot at one end of the locking rotating direction. The extended limit wall, and thus the limit position of the limit wall, makes the propeller unable to move in the axial direction, thereby realizing the axial fixing of the propeller and the fixed seat.

5. The propeller provided by the present application has a snap-fit snap-fit and a snap-fit portion on the base body and the drive device, and the seat body is formed with a positioning structure toward the side of the drive device, and the positioning structure is oriented toward the drive device. The limitation of the protruding button block of the seat blockes the rotation of the seat body relative to the driving device, so that when the propeller is disassembled by rotation, the engaging function is realized by the engaging member and the engaging portion, and the positioning structure is realized. The function of restricting the rotation of the propeller in the circumferential direction improves the mechanical strength and the effect of good stability while ensuring the ease of disassembly and assembly of the propeller.

6. The propeller provided by the present application is arranged such that the positioning structure and the engaging member are arranged at equal angles in the circumferential direction on the surface of the seat body toward the driving device, so that the force receiving point of the propeller is evenly distributed in the circumferential direction, thereby further stressing the propeller. Smooth, improve the stability of the propeller in flight.

7. The power assembly provided by the present application has the advantages described above because it includes the propeller base assembly, the propeller and the driving device as described above; at the same time, the button stopper corresponds to the number of positioning structures, and is respectively disposed on the fixing seat and the seat body. In the corresponding position of the matching, the button stopper is adapted to be embedded in the positioning structure in the first position, and is held between the fixing seat and the seat body, so that the movement of the propeller in the circumferential direction is restricted by the button stopper and the positioning structure. The force is different from the limit in the axial direction, thereby improving the mechanical strength and bringing about a good stability effect.

8. The UAV provided by the present application has the advantages described in any of the above, since it has the above-described power assembly, and the power assembly includes the propeller base assembly, the propeller, and the driving device as described above.

DRAWINGS

In order to more clearly illustrate the technical solutions of the specific embodiments of the present application, the application will be further described in detail below based on the specific embodiments of the present application and the accompanying drawings.

1 is a schematic diagram of a power assembly according to an embodiment of the present application;

Figure 2 is an exploded view of the power assembly shown in Figure 1;

Figure 3 is an exploded view of another angle of the power assembly shown in Figure 1;

Figure 4 is a schematic view of the driving device and the fixing base in the power assembly shown in Figure 1;

Figure 5 is a schematic view showing another embodiment of the fixing base of the power assembly shown in Figure 1;

Figure 6 is a longitudinal cross-sectional view of the power assembly of Figure 1 after removal of the blade.

The various reference numerals in the figure are as follows:

100-propeller base assembly; 1-fixed seat; 11-first through hole; 12-through groove;

13-to the top wall; 14-abutment groove; 15-engagement portion; 16-limit wall; 2-button switch;

21-button body; 22-button stop; 23-reset member; 24--top;

200-drive device; 201- body; 202-positioning shaft; 300-propeller;

301-seat body; 3011-positioning structure; 3012-second through hole; 3013-clamping member; 302-blade;

400-connector.

detailed description

The technical solutions of the present application are clearly and completely described in the following with reference to the accompanying drawings. It is obvious that the described embodiments are a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

In the description of the present application, it is to be noted that the orientation or positional relationship of the terms "upper", "lower", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, only for the purpose of The present application and the simplifications of the present invention are not to be construed as limiting the scope of the invention. Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless otherwise clearly defined and limited, The words "installation", "connected", and "connected" should be understood broadly. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection or an indirect connection through an intermediate medium. The specific meanings of the above terms in the present application can be understood in the specific circumstances for those skilled in the art.

Further, the technical features involved in the different embodiments of the present application described below may be combined with each other as long as they do not constitute a conflict with each other.

As shown in FIG. 1 to FIG. 3 , a schematic diagram of a power assembly provided by an embodiment of the present application includes a propeller base assembly 100 , a propeller 300 , and a driving device 200 . The propeller 300 is detachably fixed to the propeller base assembly 100, and the propeller base assembly 100 is fixedly mounted to the driving device 200, and the driving device 200 is coupled to the propeller 300 for feeding the propeller 300 Rotation provides power

The propeller 300 includes a seat body 301 and at least two blades 302 uniformly distributed circumferentially on the seat body 301. The seat body 301 is formed with a positioning structure toward one side of the driving device 200, and the positioning structure is oriented by the driving device 200. The restriction of the protruding member of the seat body 301 blocks the rotation of the seat body 301 relative to the drive unit 200. In the present embodiment, the component of the driving device 200 that protrudes toward the seat body 301 is the button stopper 22 in the propeller base assembly 100.

The propeller base assembly 100 is used for fixedly mounting the propeller 300 to the driving device 200. The fixing base 1 is fixedly connected to the main body 201 of the driving device 200, and the fixing base 1 is provided with a locking portion. The seat body 301 is provided with a latching member 3013. The fixing base 1 and the base body 301 are detachably coupled together by the rotation of the engaging portion 15 and the engaging member 3013. The button switch 2 is fixedly and axially slidably disposed on the fixing base 1 and has a button body 21 adapted to be touched and a button stopper 22 fixed to the button body 21, and the button body 21 is relatively fixed by an external force. A reset member 23 that applies a restoring force to the button body 21 when the seat 1 slides in the axial direction. When the push button switch 2 is not pressed by the external force, the button stopper 22 is located at a first position that axially protrudes from the fixed seat 1 and restricts rotation of the propeller 300 relative to the fixed seat 1; when the push button switch 2 is pressed by an external force, the button stopper 22 A second position that is retracted into the fixed seat 1 and releases the restriction on the rotation of the propeller 300 relative to the fixed seat 1.

For the above power assembly, when the propeller 300 is installed, the seat body 301 of the propeller 300 is rotationally coupled to the fixed seat 1, and the seat body 301 is rotated to the first position, and the button stopper 42 is subjected to the axial direction of the returning member 23. Extending the fixed seat 1 and restricting the rotation of the propeller 300 relative to the fixed seat 1, thereby achieving axial fixation of the propeller 300, that is, achieving rapid installation of the propeller 300; When the propeller 300 is disassembled, the push button switch 4 is pressed downward, and the button stopper 22 is located at the second position which is retracted into the fixed seat 1 and releases the restriction on the rotation of the propeller 300 with respect to the fixed seat 1, at which time the button stop 22 is no longer blocked. The propeller 300 rotates relative to the fixed seat 1 such that the propeller 300 is rotated back and forth from the fixed seat 1 to achieve rapid disassembly of the propeller 300. Since the restraint of the propeller 300 in the circumferential direction is generated by the expansion and contraction of the button stopper 22, the mechanical strength is improved, and the stability is good.

The button stopper 22 corresponds to the number of the positioning structures 3011, and is respectively disposed at the corresponding corresponding positions of the fixed seat 1 and the seat body 301 of the propeller 300; the button stopper 22 is adapted to be embedded and held in the positioning at the first position. The structure 3011 is held between the fixed seat 1 and the base 301, and the button block 22 of the push button switch 2 cooperates with the positioning structure 3011 of the base 301, so that the movement of the rotary paddle 300 in the circumferential direction is controlled by the button. The stopper 22 and the positioning structure 3011 are limited to be different from the axial force limitation, and the mechanical strength is improved. In some implementations, the positioning structure 3011 is a plurality of positioning slots recessed inwardly from a side of the base 301 of the propeller 300 toward the side of the drive device 200.

Specifically, the button body 21 is cylindrical, and a plurality of button stoppers 22 are radially outwardly convexly disposed on the outer circumferential surface of the button body 21; the fixing base 1 and the base body 301 are respectively respectively opened in the axial direction of the central portion thereof. The first through hole 11 and the second through hole 3012 are axially aligned; a sidewall of the first through hole 11 is formed with a radially outwardly recessed through groove 12; the button body 21 is at least slidably disposed at the first through hole 11 and adapted to move axially in the second through hole 3012, the button stopper 22 is slidably disposed in the through groove 12, as shown in FIG. 4, and further, when the key switch 2 is disposed on the fixed seat 1, The cooperation between the button stopper 22 and the through groove 12 realizes the fixing of the button switch 2 and the fixing base 1 in the circumferential direction.

Wherein, as shown in FIG. 3, the bottom portion of the outer surface of the push button switch 2 between the adjacent button stoppers 22 is formed with an outwardly protruding abutting top portion 24, and the outer diameter of the abutting top portion 24 is smaller than or equal to the outer side of the button stopper 22. The inner wall of the first through hole 11 of the fixing base 1 is provided with an inwardly protruding abutting wall 13 corresponding to the abutting top portion 24, and the button stopper 22 passes through the through groove 12 and is held in the positioning groove 3011 to the top. The second through hole 11 is received in the first through hole 11 and correspondingly abuts against the top wall 13 , and the button switch 2 is restricted to rotate in the fixed seat 1 , and the key switch 2 is not passed through the cooperation between the top portion 24 and the top wall 13 . It will be ejected upward from the fixed seat 1 due to the elastic force of the reset member 23, which ensures the assembly stability of the push button switch 2 and the realization of the function.

As a variant embodiment, the outer surface of the push button switch 2 is located between adjacent button stops 22 The bottom portion is formed with an outwardly protruding abutting top portion 24. The outer diameter of the abutting top portion 24 is larger than the outer diameter of the button stopper 22; the inner wall of the first through hole 11 is recessed inwardly corresponding to the abutting portion 24 to form a plurality of downwardly extending fixing seats. As shown in FIG. 5, the abutting groove 14 is inserted into the abutting groove 14, and the groove wall of the abutting groove 14 is the abutting wall 13, and the abutting top 24 is received in the first through hole. 11 and correspondingly abut against the top wall 13; at the same time, the first through hole 11 and the through groove 12 are formed as one through hole. In addition, the through groove 12 and the abutting groove 14 may also be grooves having different depths formed on the wall of the first through hole 11 and will not be described herein.

In this embodiment, the driving device 200 is a motor. During the rotation of the driving blade 302, the output shaft of the motor is fixedly connected to the main body 201, and the fixing base 1 is fixedly mounted on the main body 201 through the connecting member 400. In the embodiment, the connecting member 400 is a screw, and then the The rotation of the output shaft of the motor is controlled to drive the main body 201 to rotate, so that the main body 201 drives the fixing base 1 to rotate and drives the key switch 2 to rotate, thereby driving the propeller 300 to rotate coaxially.

As a modified embodiment, the driving device may also be a rotating electric cylinder or the like having a rotating output power, which will not be enumerated here.

In addition, the main body 201 is provided with a positioning shaft 202 protruding upward; the button switch 2 and the resetting member 23 are movably sleeved on the positioning shaft 202, and the resetting member 23 pushes the button switch 2 to make the button stopper 22 correspond to the card. Holding in the positioning groove 3011, the relative fixing of the seat body 301 and the fixing base 1 in the rotation direction is ensured; at the same time, since the fixing base 1 is fixedly mounted on the main body 201, the main body 201 drives the fixing base 1 to rotate. The button switch 2 is rotated to drive the propeller 300 to rotate coaxially. In the present embodiment, the reset member 23 is a spring.

In order to achieve the rotational locking of the fixed seat 1 and the base 301, the base 301 is further provided with a catching member 3013 for rotationally engaging with the fixed base 1. In one implementation, the latching member 3013 is a plurality of claw blocks that are evenly distributed on the surface of the base 301 toward the driving device 200, and the plurality of claw blocks are oriented toward the driving device 200. After extending, it is bent and extended. The corresponding surface of the fixing base 1 is corresponding to the engaging member 3013 and has a corresponding number of engaging portions 15 . In this embodiment, the engaging portion 15 is located at a plurality of mounting grooves uniformly distributed in the circumferential direction of the fixing base 1 . The inner wall of the mounting groove protrudes from the bending direction of the engaging member 3013 in the locking rotation direction, and the limiting wall 16 is used to limit the axis of the propeller 300 relative to the fixing base 1 Move to. Specifically, the latching member 3013 is rotatably inserted into the mounting slot, and in the latching position, the bent extension portion of the latching member 3013 is located on the side of the limiting wall 16 opposite to the seat body 301, as shown in FIG. 6. As shown, the limit of the bent portion of the clip 3013 is further determined by the limiting wall 16 Therefore, the seat body 301 cannot be moved in the axial direction, thereby achieving the axial fixing of the propeller 300 and the fixed seat 1.

As an alternative embodiment, the number of the positioning structure 3011 and the latching member 3013 are three, and the positioning structure 3011 and the engaging member 3013 are disposed at equal angles in the circumferential direction on the surface of the base 301 facing the driving device 200, so that The force receiving points of the seat body 301 are evenly distributed in the circumferential direction, thereby making the propeller 300 more stable and improving the stability of the propeller 300 during flight. Of course, the number of the positioning groove 3011 and the engaging member 3013 may be other numbers, and may be specifically set according to the size of the contact surface of the seat body 301 and the fixing base 1 and the mechanical strength.

The embodiment of the present application further provides an unmanned aerial vehicle including a fuselage, an arm, and a power assembly as described in the above embodiment, wherein the power component is coupled to the arm for providing flight power to the unmanned aerial vehicle. . The above-described unmanned aerial vehicle has the advantages described in the above embodiments since the above-described power components are employed.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; in the idea of the present application, the technical features in the above embodiments or different embodiments may also be combined. The steps may be carried out in any order, and there are many other variations of the various aspects of the present application as described above, which are not provided in the details for the sake of brevity; although the present application has been described in detail with reference to the foregoing embodiments, The skilled person should understand that the technical solutions described in the foregoing embodiments may be modified, or some of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the embodiments of the present application. The scope of the technical solution.

Claims

A propeller base assembly (100) for securing a propeller (300) to a drive (200), wherein the propeller mount assembly (100) comprises:

The fixing base (1) is fixedly connected to the main body (201) of the driving device (200), and the fixing base (1) has a card for rotatingly engaging with the engaging member (3013) of the propeller (300). Joint department (15);

a push button switch (2) is circumferentially fixed and axially slidably disposed on the fixing base (1), and has a button body (21) adapted to be touched and a button fixed on the button body (21) Stop (22);

Wherein, when the button switch (2) is not pressed by an external force, the button stopper (22) is axially extended from the fixing seat (1) and restricts the propeller (300) relative to the fixing seat (1) a first position of rotation; when the push button switch (2) is pressed by an external force, the button stopper (22) is located in the fixed seat (1) and is released from the opposite side of the propeller (300) The second position of the restriction of the rotation of the fixing seat (1).
The propeller base assembly (100) according to claim 1, further comprising a reset member (23) that is pressed by an external force with respect to an axial direction of the fixed seat (1) The reset member (23) applies a restoring force to the button body (21) when sliding.
A propeller base assembly (100) according to claim 2, wherein the reset member (23) is a spring.
The propeller base assembly (100) according to any one of claims 1 to 3, wherein a side of the propeller (300) facing the driving device (200) is formed with the button stopper ( 22) a corresponding positioning structure (3011), when the button stopper (22) is in the first position, the button stopper (22) is held in the positioning structure (3011), thereby limiting the The propeller (300) rotates relative to the drive unit (200).
The propeller base assembly according to claim 4, wherein the button stopper (22) corresponds to the number of the positioning structures (3011), and is respectively disposed on the fixing base (1) And a corresponding position of the seat body (301) of the propeller (300); the button stop (22) is adapted to be embedded in the positioning structure (3011) in the first position, and is clamped Between the fixing seat (1) and the seat body (301).
The propeller base assembly (100) according to claim 4 or 5, wherein the positioning structure (3011) is from the seat body (301) of the propeller (300) toward the driving device (200) A plurality of positioning grooves recessed inwardly on one side.
The propeller base assembly (100) according to any one of claims 1 to 6, wherein the button body (21) is cylindrical, and a plurality of the button stoppers (22) project radially outward. Is disposed on an outer circumferential surface of the button body (21); the fixing base (1) is axially opened with a first through hole (11) in a central portion; a sidewall of the first through hole (11) Forming a radially outwardly recessed through groove (12); the button body (21) is slidably disposed in the first through hole (11), and the button stopper (22) is slidably disposed at In the through slot (12).
The propeller base assembly (100) according to claim 7, wherein the seat body (301) is axially opened with a second through hole (3012), the first through hole (11) and the The second through hole (3012) is axially aligned, and the button body (21) is adapted to move axially in the second through hole (3012).
The propeller base assembly (100) according to claim 7 or 8, wherein a bottom portion of the push button switch (2) located between adjacent ones of the button stops (22) is formed with an outward convex shape. Extending the top portion (24); an inner wall of the first through hole (11) of the fixing seat (1) is provided with an inwardly protruding abutting wall (13) corresponding to the abutting top portion (24), The abutting top (24) abuts the abutting wall (13).
The propeller base assembly (100) according to claim 9, wherein an outer diameter of the abutting top portion (24) is less than or equal to an outer diameter of the button stopper (22), and the abutting top portion (24) receives In the first through hole (11).
A propeller base assembly (100) according to claim 9 wherein The outer diameter of the top portion (24) is larger than the outer diameter of the button stopper (22); the inner wall of the first through hole (11) is recessed inwardly corresponding to the abutting top portion (24) to form a plurality of undulations A top groove (14), the abutting top portion (24) is inserted in the abutting groove (14).
The propeller base assembly (100) according to any one of claims 1 to 11, characterized in that the engaging portion (15) is uniformly distributed in the circumferential direction on the fixing seat (1) Installation slot.
The propeller base assembly (100) according to claim 12, wherein the mounting groove is further provided with a limiting wall for restricting axial movement of the propeller (300) relative to the fixing base (1) ( 16).
A propeller (300) for securing to a drive (200) by a propeller base assembly (100), wherein

include:

Seat (301); and

At least two blades (302), the at least two blades (302) are uniformly distributed circumferentially on the seat body (301);

Wherein, the seat body (301) is formed with a positioning structure (3011) toward one side of the driving device (200), and the positioning structure (3011) is directed toward the seat body by the driving device (200) ( 301) The restriction of the protruding member blocks the rotation of the seat body (301) relative to the driving device (200).
The propeller (300) according to claim 14, wherein the positioning structure (3011) is a plurality of inwardly recessed from a side of the seat body (301) toward the driving device (200) Positioning slot.
The propeller (300) according to claim 14 or 15, wherein the base (301) is further provided with a catch (3013) for rotationally engaging with the propeller base assembly (100).
The propeller (300) according to claim 16, wherein the engaging member (3013) is a plurality of claw blocks uniformly distributed on a surface of the seat body (301) facing the driving device (200). The plurality of claw blocks extend axially toward the driving device (200) and then extend and extend.
The propeller (300) according to claim 16 or 17, wherein the positioning structure (3011) and the engaging member (3013) are at the seat body (301) toward the driving device (200) The surfaces are arranged at equal angles in the circumferential direction.
The propeller (300) according to any one of claims 14-18, characterized in that the component protruding on the driving device (200) toward the seat body (301) is the button stopper (22) .
A power assembly, comprising: a propeller base assembly (100), a propeller (300), and a driving device (200) according to any one of claims 1-13, the propeller (300) being detachably Fixed to the propeller base assembly (100), the propeller base assembly (100) is fixedly mounted to the driving device (200), and the driving device (200) is connected to the propeller (300) for The rotation of the propeller (300) provides power.
An unmanned aerial vehicle characterized by comprising a fuselage, an arm and a power assembly according to claim 19, said power assembly (500) being coupled to said arm.