WO2022227054A1

WO2022227054A1 - Propeller, power set and unmanned aerial vehicle

Info

Publication number: WO2022227054A1
Application number: PCT/CN2021/091649
Authority: WO
Inventors: 吴利鑫; 郭盛家
Original assignee: 深圳市大疆创新科技有限公司
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2022-11-03

Abstract

A propeller, a power set, and an unmanned aerial vehicle, the propeller comprising a propeller clamp (10), at least two blades (11), and at least two rotating shafts (12); connecting ends (111) of the blades (11) are provided with through holes (112), the propeller clamp (10) is internally provided with accommodating spaces (S) used for accommodating the connecting ends (111), and the rotating shafts (12) penetrate through the through holes (112). In an unfolded state, the propeller clamp (10) abuts against the connecting ends (111) to limit the axial movement of the blades (11) along the rotating shafts (12); and in a folded state, the propeller clamp (10) is released from the connecting ends (111), and the blades (11) can move in the axial direction of the rotating shafts (12). The described structure can to a certain extent avoid the design in which the plane of the fuselage must be lower than the plane of the blades, thus reducing constraints to the structural design of the fuselage, and rendering a simple and compact structure.

Description

Propellers, power suits and drones

technical field

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

Background technique

The folding propeller is an important design to reduce the packaging volume of the drone. When the drone needs to be stored or transported, the blades of the propeller can be folded. At this time, the drone is small in size, which is convenient for users to store and transport. In the case of needing to use a drone, the blades can be unfolded to facilitate the rotation of the blades.

In the prior art, a folding propeller may generally include a blade and a blade clamp for holding the blade, and the blade can be rotatably connected to the blade clamp. Through the rotation of the blade on the blade clip, the expansion or storage of the blade can be realized. In the folded state, the blades are usually stored above the fuselage of the drone. If the plane of the fuselage is higher than the plane of the blades after the arms are folded, the blades cannot be stored above the fuselage. Therefore, in specific applications , in order to realize the storage of the blades, there are often many constraints on the design of the fuselage structure, and the storage state of the blades is not compact enough.

SUMMARY OF THE INVENTION

In order to solve the problem of many constraints in the design of the fuselage structure in the prior art, the embodiments of the present application disclose a propeller, a power suit, and an unmanned aerial vehicle.

In a first aspect, an embodiment of the present application discloses a propeller, the propeller comprising: a propeller clamp, at least two propeller blades, and at least two rotating shafts;

The connecting end of the paddle is provided with a through hole, the paddle clip is provided with an accommodating space for accommodating the connecting end, and the rotating shaft passes through the through hole;

Wherein, in the unfolded state, the paddle clip abuts against the connecting end, restricting the axial movement of the paddle along the rotating shaft;

In the folded state, the paddle clip is released from abutment with the connecting end, and the paddle can move axially along the rotating shaft.

Optionally, the paddle clip includes a first limiting portion, and the first limiting portion is provided in the accommodating space; wherein,

In the folded state, the first limiting portion abuts against the connecting end to limit the axial movement of the paddle along the rotating shaft;

In the folded state, the first limiting portion is in contact with the connecting end, so that the paddle can move axially along the rotating shaft.

Optionally, the paddle clip includes: an upper paddle clip and a lower paddle clip that are relatively spaced apart, and the accommodating space is formed between the upper paddle clip and the lower paddle clip;

The first limiting portion is provided on the upper paddle clip and/or the lower paddle clip.

Optionally, the paddle clip further comprises: a connecting piece, the connecting piece is arranged between the upper paddle clip and the lower paddle clip, and is respectively connected with the central area of the upper paddle clip and the lower paddle The central area of the clip is fixedly connected;

The first limiting portion is disposed away from the connecting piece;

And/or, the first limiting portion is disposed close to the connecting piece.

Optionally, the first limiting portion includes a first clamping portion provided on the upper paddle clip and a second clamping portion provided on the lower paddle clip;

The first clamping portion and the second clamping portion are disposed opposite to each other, and a first clamping space capable of clamping the connecting end is formed between the first clamping portion and the second clamping portion;

In the unfolded state, the connecting end is embedded in the first clamping space, and both the first clamping portion and the second clamping portion are abutted against the connection end to restrict the paddle The vane moves axially along the shaft;

In the folded state, the connecting end slides out from the first holding space, the first holding part and the second holding part release the abutment on the connecting end, and the paddle The vanes are axially movable along the shaft.

Optionally, a first guide structure is provided on a side of the first clamping portion close to the connecting piece, a second guide structure is provided on a side of the second clamping portion close to the connecting piece, and the The first guide structure and the second guide structure can guide the connecting end into the first clamping space, or lead the connecting end out of the first clamping space.

Optionally, both the first guide structure and the second guide structure are inclined surfaces.

Optionally, both the first guide structure and the second guide structure are curved surfaces.

Optionally, the connecting end is provided with a third guide structure on the edge of the side close to the upper paddle clip, and the connecting end is provided with a fourth guide structure on the edge of the side close to the lower paddle clip, The third guide structure is used to cooperate with the first guide structure, and the fourth guide structure is used to cooperate with the second guide structure to guide the connecting end into the first clamping space, or , the connecting end is led out from the first clamping space.

Optionally, both the third guide structure and the fourth guide structure are inclined surfaces.

Optionally, both the third guide structure and the fourth guide structure are curved surfaces.

Optionally, the first clamping portion is a projection that protrudes toward the lower paddle clip, and the second clamping portion is a projection that protrudes towards the upper paddle clip.

Optionally, the paddle clip further includes a second limiting portion, and the second limiting portion is provided in the accommodating space; wherein,

In the folded state, the second limiting portion abuts against the connecting end to limit the axial movement of the paddle along the rotating shaft;

In the folded state, the second limiting portion releases the abutment on the connecting end, so that the paddle can move axially along the rotating shaft.

Optionally, the second limiting portion is disposed close to the connecting piece, and the first limiting portion is disposed far from the connecting piece;

In the unfolded state, the first limiting portion abuts against the head of the connecting end, and the second limiting portion abuts against the root portion of the connecting end, restricting the blade along the rotating shaft. movement;

In the folded state, the first limiting portion is released from abutment with the head of the connecting end, the second limiting portion is released from abutting with the tail of the connecting end, and the paddle can move along the The shaft moves axially.

Optionally, the second limiting portion includes a third clamping portion provided on the upper paddle clip and a fourth clamping portion provided on the lower paddle clip;

The third clamping portion and the fourth clamping portion are disposed opposite to each other, and a second clamping space capable of clamping the connecting end is formed between the third clamping portion and the fourth clamping portion;

In the unfolded state, the root portion of the connecting end is embedded in the two clamping spaces, the third clamping portion and the fourth clamping portion both abut against the root portion of the connecting end, restricting the The blade moves axially along the shaft;

In the folded state, the root portion of the connecting end slides out from the second clamping space, the third clamping portion and the fourth clamping portion release the abutment against the root portion of the connecting end, The paddle can move axially along the shaft.

Optionally, the third clamping portion is a protrusion facing the lower paddle clip, and the fourth clamping portion is a protrusion facing the upper paddle clip.

Optionally, the protrusions are hemispherical protrusions.

Optionally, two sides of the connecting end are respectively provided with avoidance grooves, and the avoidance grooves are used to avoid the third clamping portion and the fourth clamping portion.

Optionally, the connecting end is provided with a third limiting portion; wherein,

In the folded state, the third limiting portion is in abutment with the paddle clip to limit the axial movement of the paddle along the rotating shaft;

In the folded state, the third limiting portion is released from the abutment of the paddle clip, so that the paddle can move axially along the rotating shaft.

The first side of the connecting end is close to the upper paddle clip, and the second side of the connecting end is close to the lower paddle clip;

The third limiting portion is provided on the first side and/or the second side.

The third limiting portion is disposed away from the connecting piece;

And/or, the third limiting portion is disposed close to the connecting piece.

Optionally, the third limiting portion includes a first abutting portion disposed on the first side and a second abutting portion disposed on the second side;

In the unfolded state, the first abutting portion abuts against the upper paddle clip, and the second abutting portion abuts against the lower paddle clip, restricting the paddle along the axial direction of the rotating shaft sports;

In the folded state, the first abutting portion is released from the upper paddle clip, the second abutting portion is released from the lower paddle clip, and the paddle can move along the rotating shaft Axial movement.

Optionally, the through hole is a waist-shaped hole, and the waist-shaped hole can slide along the rotating shaft.

Optionally, the long end of the waist-shaped hole is parallel to the direction of the connecting line between the tip of the blade and the root of the blade, and the short end of the waist-shaped hole is connected to the tip of the blade and the root of the blade. Line direction is vertical.

Optionally, there is a gap between the short end of the waist-shaped hole and the rotating shaft;

In the folded state, the long end of the waist-shaped hole can slide along the rotating shaft, so that the paddle can move axially along the rotating shaft.

Optionally, a cross section of the waist-shaped hole perpendicular to the long end is a rectangle or a trapezoid.

Optionally, a cross section of the waist-shaped hole perpendicular to the short end is a rectangle or a trapezoid.

Optionally, the through hole is a circular hole.

Optionally, the diameter of the circular hole is larger than the diameter of the rotating shaft, so that there is the gap between the circular hole and the rotating shaft;

In the folded state, the circular hole can slide along the rotating shaft, so that the paddle moves axially along the rotating shaft.

Optionally, the cross section of the circular hole is rectangular or trapezoidal.

Optionally, the height of the accommodating space in the axial direction of the rotating shaft is greater than the height of the connecting end in the axial direction of the rotating shaft.

In a second aspect, an embodiment of the present application further discloses a power suit, comprising: a motor and the propeller according to any one of the above, wherein a propeller clip of the propeller is connected to the motor.

In a third aspect, an embodiment of the present application further discloses an unmanned aerial vehicle, comprising: a fuselage, an arm, and the above-mentioned power suit; wherein,

The arm is connected to the fuselage, and the power suit is connected to the arm.

In the embodiment of the present application, since the connecting end of the paddle is provided with a through hole, the paddle clip is provided with an accommodating space for accommodating the connecting end, and the rotating shaft passes through the through hole; in the unfolded state, the paddle clip is It can abut with the connecting end to limit the axial movement of the blade along the rotating shaft, avoid the axial movement of the blade, and improve the vibration of the propeller; in the folded state, the blade clamp The paddle can be released from the connection end, and the paddle can move axially along the rotating shaft, so that the paddle can be turned up along the rotating shaft. In this way, when the blade needs to be folded and stored, even if the plane of the folded blade is lower than the plane of the fuselage, the blade can still be stored above the fuselage by flipping the blade up and down along the rotating shaft . In this way, the design that the plane of the fuselage must be lower than the plane of the blades can be avoided to a certain extent, the constraints on the design of the fuselage structure are reduced, and the structure is simple and compact.

The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the description, and in order to make the above-mentioned and other purposes, features and advantages of the present application more obvious and easy to understand , and the specific embodiments of the present application are listed below.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the accompanying drawings used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

1 is a schematic structural diagram of a propeller in an unfolded state according to an embodiment of the present application;

Fig. 2 is the sectional structure schematic diagram of the propeller shown in Fig. 1;

Fig. 3 is the detailed structural representation of the position of propeller A shown in Fig. 2;

4 is one of the structural schematic diagrams of a propeller in a folded state according to an embodiment of the present application;

Fig. 5 is the sectional structure schematic diagram of the propeller shown in Fig. 4;

6 is the second structural schematic diagram of a propeller in a folded state according to an embodiment of the present application;

Fig. 7 is the sectional structure schematic diagram of the propeller shown in Fig. 6;

FIG. 8 is one of the schematic structural diagrams of another propeller in an unfolded state according to an embodiment of the present application;

Fig. 9 is the detailed structural representation of the position of propeller B described in Fig. 8;

FIG. 10 is the second structural schematic diagram of another propeller in an unfolded state according to an embodiment of the present application;

Fig. 11 is the detailed structure schematic diagram of the position of propeller C described in Fig. 10;

12 is a schematic structural diagram of another propeller in a folded state according to an embodiment of the present application;

13 is a schematic structural diagram of an unmanned aerial vehicle according to an embodiment of the present application;

Description of reference numbers:

10-paddle clip, 101-upper paddle clip, 102-lower paddle clip, 103-connector, 104-first clamping part, 105-second clamping part, 106-first guiding structure, 107-second guiding Structure, 108-third clamping part, 109-fourth clamping part, 11-paddle, 111-connecting end, 112-through hole, 113-first side wall, 114-third guide structure, 115-th Four-guide structure, 116-avoidance groove, 12-rotating shaft, S-accommodating space, Q-first clamping space, 100-body, 200-arm, 300-power suit.

specific embodiment

In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

The features of the terms "first" and "second" in the description and claims of this application may expressly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the associated objects are in an "or" relationship.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial, The orientations or positional relationships indicated by "radial direction", "circumferential direction", etc. are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated devices or elements. It must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Referring to FIG. 1 , a schematic structural diagram of a propeller in an unfolded state according to an embodiment of the present application is shown. Referring to FIG. 2 , a schematic cross-sectional structural diagram of the propeller shown in FIG. 1 is shown. Referring to FIG. 3 , FIG. 2 is shown. The detailed structural schematic diagram of the position of the propeller A shown, referring to FIG. 4 , shows one of the structural schematic diagrams of a propeller in a folded state according to an embodiment of the present application, and referring to FIG. 5 , showing a cross-section of the propeller shown in FIG. 4 Referring to the schematic structural diagram, referring to FIG. 6 , it shows the second structural schematic diagram of a propeller in a folded state according to an embodiment of the present application. Referring to FIG. 7 , it shows a cross-sectional structural schematic diagram of the propeller shown in FIG. 6 .

As shown in FIGS. 1 to 7 , the propeller may specifically include: a propeller clamp 10 , at least two propeller blades 11 and at least two rotating shafts 12 ;

The connecting end 111 of the paddle 11 is provided with a through hole 112, the paddle clip 10 is provided with an accommodating space S for accommodating the connecting end 111, and the rotating shaft 12 passes through the through hole 112;

Wherein, in the unfolded state, the paddle clip 10 abuts against the connecting end 111, and restricts the axial movement of the paddle 11 along the rotating shaft 12;

In the folded state, the paddle clip 10 and the connecting end 111 are released from abutment, and the paddle 11 can move axially along the rotating shaft 12 .

In the embodiment of the present application, since the connecting end 111 of the paddle 11 is provided with a through hole 112 , the paddle clip 10 is provided with an accommodating space S for accommodating the connecting end 111 , and the rotating shaft 12 passes through the through hole 112 ; The clip 10 can abut against the connecting end 111 to limit the axial movement of the blade 11 along the rotating shaft 12, avoid the axial movement of the blade 11, and improve the vibration of the propeller; in the folded state, the blade clip 10 can be connected with the The end 111 is released from the abutment, and the paddle 11 can move axially along the rotating shaft 12 , so that the paddle 11 can be turned up along the rotating shaft 12 . In this way, when the blade 11 needs to be folded and stored, even if the plane of the folded blade is lower than the plane of the fuselage, the blade 11 can still be stored above the fuselage by flipping the blade 11 up and down along the rotating shaft 12 . In this way, the design that the plane of the fuselage must be lower than the plane of the blades can be avoided to a certain extent, the constraints on the design of the fuselage structure are reduced, and the structure is simple and compact

Specifically, the blade body of the blade 11 includes a blade root and a blade tip that are disposed away from each other, and the connecting end 111 is disposed at an end of the blade body close to the blade root. The connecting end 111 can be disposed in the accommodating space S of the paddle clip 10 , and can rotate around the rotating shaft 12 in the accommodating space S to connect the paddle 11 to the paddle clip 10 . In practical application, when the blade 11 needs to be unfolded for work, the blade 11 can be unfolded to the unfolded state shown in FIG. 1 through the rotation of the connecting end 111 around the rotating shaft 12 . When the paddle 11 needs to be folded and stored, the paddle 11 can be folded to the folded state shown in FIG. 4 through the rotation of the connecting end 111 around the rotating shaft 12 . In the case where the folded blade plane of the blade 11 is lower than the plane of the fuselage, since the blade 11 can move axially along the rotating shaft 12, the blade 11 can move up along the rotating shaft 12 to the folded state shown in FIG. 6 , Raise the position of the paddle 11 and store the paddle 11 above the fuselage. In this way, the design that the plane of the fuselage must be lower than the plane of the blades can be avoided to a certain extent, the constraints on the design of the fuselage structure are reduced, and the application scenarios of the folding propeller can be broadened. Moreover, the structure is simple and compact, and there is no need to add additional It is easy to realize and low cost.

It should be noted that, in the drawings of the embodiments of the present application, only the case where the propeller includes two blades 11 is shown, and in practical applications, the number of blades 12 may also be three or four. Or other quantities, in the case that the number of blades 11 in the propeller is other worthwhile, the specific working process can be performed with reference to the number of blades 12 being 2. In the embodiment of the present application, only the number of blades 11 is used. The number is 2 for description.

In this embodiment of the present application, the paddle clip 10 may include: an upper paddle clip 101 and a lower paddle clip 102 that are relatively spaced apart; a accommodating space S is formed between the upper paddle clip 101 and the lower paddle clip 102, and the accommodating space S can be used to accommodate the paddles The connecting end 111 of the leaf 11 .

In practical applications, the upper paddle clip 101 and the lower paddle clip 102 can be provided with mounting holes at the positions corresponding to the rotating shaft 12, one end of the rotating shaft 12 can be connected to the mounting hole of the upper paddle clip 101, and the other end of the rotating shaft 12 can be connected to the lower paddle into the mounting hole of the clip 102 to realize the fixed connection between the rotating shaft 12 and the paddle clip 10 .

Exemplarily, the connection between the rotating shaft 12 and the mounting hole may include, but is not limited to, interference fit, threaded connection, riveting or snap connection, etc. In the embodiment of the present application, for the rotating shaft 12, the upper paddle clip 101 and the lower paddle clip are The connection method on 102 may not be specifically limited.

Optionally, the paddle clip 10 may further include: a connecting piece 103, the connecting piece 103 is disposed between the upper paddle clip 101 and the lower paddle clip 102, and is respectively connected with the central area of the upper paddle clip 101 and the central area of the lower paddle clip 102 The fixed connection is used to realize the fixed connection between the upper paddle clip 101 and the lower paddle clip 102 . Connecting the connector 103 to the central area of the upper paddle clip 101 and the lower paddle clip 102 can facilitate the connector 103 to divide the space between the upper paddle clip 101 and the lower paddle clip 102 into at least two center-symmetric accommodation spaces S In this way, when the connecting end 111 of the paddle 11 is disposed in the accommodation space S, the center symmetry of at least two paddles 11 can be realized, so that the force of each paddle 11 can be balanced.

For example, the connector 103 can be connected to the upper propeller clip 101 and the lower propeller clip 102 by means of screwing, riveting, etc. of fasteners, and can also be connected to the upper propeller clip 101 and the lower propeller clip 101 by means of interference fit or snap connection. As for the clip 102, the embodiment of the present application does not specifically limit the fixed connection manner of the connector 103 to the upper paddle clip 101 and the lower paddle clip 102.

In an optional embodiment of the present application, the paddle clip 10 may include a first limiting portion, and the first limiting portion may be provided in the accommodating space S; wherein, in the folded state, the first limiting portion A limiting portion abuts against the connecting end 111 to restrict the axial movement of the paddle along the shaft; in the folded state, the first limiting portion contacts and abuts against the connecting end 111 , so that the paddle 11 It can move axially along the shaft 12 .

Specifically, the first limiting portion may include, but is not limited to, an elastic limiting member, a limiting protrusion, and the like, and the specific form of the first limiting portion may not be limited in the embodiment of the present application.

In some optional embodiments of the present application, the first limiting portion may be provided only on the upper paddle clamp 101, the first limiting portion may also be provided only on the lower paddle clamp 102, or the A limiting portion may also be provided on the upper paddle clip 101 and the lower paddle clip 102 at the same time, and the specific position of the first limiting portion may not be limited in the embodiment of the present application.

Moreover, the first limiting portion may be disposed away from the connecting member 103 , the first limiting portion may also be disposed close to the connecting member 103 , or the first limiting portion may be simultaneously disposed away from the connecting member 103 and the connecting member 103 . The position close to the connector 103 does not specifically limit the position of the first limiting portion relative to the connector 103 in the embodiment of the present application.

Optionally, the first limiting portion may specifically include a first clamping portion 104 provided on the upper paddle clamp 101 and a second clamping portion 105 provided on the lower paddle clamp 102. The first clamping portion 104 is connected to the second clamping portion 104. The two clamping parts 105 are arranged opposite to each other, and a first clamping space Q that can clamp the connecting end is formed between the first clamping part 104 and the second clamping part 105 ; in the unfolded state, the connecting end 111 is embedded Located in the first clamping space Q, the first clamping portion 104 and the second clamping portion 105 are both abutted against the connecting end 111 to restrict the axial movement of the blade 11 along the rotating shaft 12; in the folded state, the connecting end 11 can slide out from the first clamping space Q, and the first clamping part 104 and the second clamping part 104 can release the abutment on the connecting end 111 , so that the paddle 11 can move axially along the rotating shaft 12 .

In a specific application, under the clamping action of the first clamping portion 104 and the second clamping portion 105, the vertical vibration of the connecting end 111 can be avoided to a certain extent, thereby reducing the vibration of the blade 11 and improving the The working stability of the blade 11 .

Optionally, a first guide structure 106 is provided on the side of the first clamping portion 104 close to the connecting piece 103 , and a second guiding structure 107 is provided on the side of the second clamping portion 105 close to the connecting piece 103 . 106. The second guide structure 107 can guide the connecting end 111 into the first clamping space Q, or lead the connecting end 111 out of the first clamping space Q, so that the connecting end 111 can enter and exit the first clamping space 107 easily.

Specifically, when the paddle 11 needs to be unfolded for work, under the guiding action of the first guide structure 106 and the second guide structure 107, the connecting end 111 of the paddle 11 can be guided into the first clamping space Q, so that The connecting ends 111 of the first clamping part 104 and the second clamping part 105 are clamped to prevent the connection ends 111 from vibrating up and down, so as to reduce the vibration of the blade 11 during operation and improve the working stability of the blade 11 . When the paddle 11 needs to be folded and stored, under the guiding action of the first guide structure 106 and the second guide structure 107, the connecting end 111 of the paddle 11 can be led out from the first clamping space Q to release the first The clamping portion 104 and the second clamping portion 105 clamp the connecting end 111 to facilitate the connecting end 111 to flip up and down in the accommodating space S, so as to realize the folding and storage of the paddle 11 .

Optionally, both the first guide structure 106 and the second guide structure 107 may be inclined planes, so that the processing of the first guide structure 106 and the second guide structure 107 is simpler. Alternatively, both the first guiding structure 106 and the second guiding structure 107 may be curved surfaces, so that the guiding process of the first guiding structure 106 and the second guiding structure 107 is relatively smooth. The drawings of the embodiments of the present application only show the case where the first guide structure 106 and the second guide structure 107 are both inclined surfaces, and the case where the first guide structure 106 and the second guide structure 107 are both curved surfaces can be performed with reference.

Optionally, a third guide structure 114 is provided on the edge of the connecting end 111 on the side close to the upper paddle clip 101 , and a fourth guide structure 115 is provided on the edge of the connecting end 111 on the side close to the lower paddle clip 102 . The guide structure 114 can be used to cooperate with the first guide structure 106, and the fourth guide structure 115 can be used to cooperate with the second guide structure 107 to guide the connection end 111 into the first clamping space Q, or to guide the connection end 111 from the Lead out in the first clamping space Q.

Specifically, when the blade 11 needs to be deployed for work, the third guide structure 114 can cooperate with the first guide structure 106 , and the fourth guide structure 115 can cooperate with the second guide structure 107 to connect the blade 11 . The end 111 is introduced into the first clamping space Q, so that the connecting end 111 of the first clamping part 104 and the second clamping part 105 is clamped, and the connection end 111 is prevented from vibrating up and down, so as to reduce the vibration of the blade 11 during operation. The working stability of the blade 11 is improved. When the paddle 11 needs to be folded and stored, the third guide structure 114 can cooperate with the first guide structure 106, and the fourth guide structure 115 can cooperate with the second guide structure 107, so as to connect the connecting end 111 of the paddle 11 from the first guide structure 107 to the second guide structure 107. The first clamping part 104 and the second clamping part 105 are released from the clamping space Q to release the clamping of the connecting end 111 , so that the connecting end can be flipped up and down in the accommodating space S to realize the folding and storage of the paddle 11 .

In practical applications, under the cooperative guidance of the third guide structure 114 and the first guide structure 106, and the cooperative guidance of the fourth guide structure 115 and the second guide structure 107, when the motor is running, the blade 10 can be The action of centrifugal force is automatically unfolded from the folded state to the unfolded state, without the need for the user to manually unfold the paddle 10 , which greatly improves the user's experience.

Optionally, both the third guide structure 114 and the fourth guide structure 115 may be inclined planes, so that the processing of the third guide structure 114 and the fourth guide structure 115 is relatively simple. Alternatively, both the third guiding structure 114 and the fourth guiding structure 115 may be curved surfaces, so that the guiding process of the third guiding structure 114 and the fourth guiding structure 115 is relatively smooth. The drawings of the embodiments of the present application only show the case where the third guide structure 114 and the fourth guide structure 115 are both inclined surfaces, and the case where the third guide structure 114 and the fourth guide structure 115 are both curved surfaces can be performed with reference.

It should be noted that since the third guide structure 114 needs to cooperate with the first guide structure 106 , in the case where the first guide structure 106 is an inclined surface, the third guide structure 114 is correspondingly inclined. In the case of a curved surface, the third guide structure 114 is correspondingly a curved surface. The specific structure of the fourth guide structure 115 can be implemented with reference to the third guide structure 114 , which is not repeated here.

Optionally, the first clamping portion 104 may be a protrusion that protrudes toward the lower paddle clamp 102 , the first clamping portion 104 and the upper paddle clamp 101 may be integrally formed, and the second clamping portion 105 may be upward facing The protruding bump of the paddle clip 101, the second clip portion 105 and the lower paddle clip 102 can be integrally formed, so that it can be avoided to additionally set the first clip portion 104 on the upper paddle clip 101 and the lower paddle clip 102. The operation of disposing the second clamping portion 105 on the 102 simplifies the processing process of the paddle clamp 10 and saves the process cost.

It should be noted that, in practical applications, the first clamping portion 104 can also be connected to the upper paddle clamp 101 by welding, bonding, fastener connection, or clamping. Similarly, the second clamping portion 105 It can also be connected to the lower paddle clamp 102 by welding, gluing, fastener connection or snap connection, etc. The specific implementation of the first clamping portion 104 and the second clamping portion 105 in the embodiment of the present application may be omitted. limited.

In other optional embodiments of the present application, the paddle clip 10 may further include a second limiting portion, and the second limiting portion is provided in the accommodating space S; wherein, in the folded state, the first limiting portion The two limiting portions can abut against the connecting end 111 to limit the axial movement of the paddle 11 along the rotating shaft 12; in the folded state, the second limiting portion can release the abutting against the connecting end 111, so that the paddle 11 can move axially along the shaft 12. 11 can move axially along the shaft 12 .

Specifically, the second limiting portion may include, but is not limited to, an elastic limiting member, a limiting protrusion, and the like, and the specific form of the second limiting portion may not be limited in the embodiment of the present application.

In some optional embodiments of the present application, the second limiting portion may be provided only on the upper paddle clamp 101, the second limiting portion may also be provided only on the lower paddle clamp 102, or the first The two limiting portions may also be disposed on the upper paddle clip 101 and the lower paddle clip 102 at the same time, and the specific position of the second limiting portion may not be limited in the embodiment of the present application.

Moreover, the second limiting portion may be disposed away from the connecting member 103 , the second limiting portion may also be disposed close to the connecting member 103 , or the second limiting portion may be disposed close to and away from the connecting member 103 at the same time , the embodiment of the present application also does not specifically limit the position of the first limiting portion relative to the connecting member 103 .

Optionally, the second limiting portion may be disposed close to the connecting piece 103, and the first limiting portion may be disposed far from the connecting piece 103; in the unfolded state, the first limiting portion and the connecting end 111 The second limiting portion is abutted against the root of the connecting end 111 to limit the axial movement of the paddle 11 along the rotating shaft 12; in the folded state, the first limiting portion and the connecting end The head of the 111 is released from the abutment, the second limiting portion is released from the resistance of the tail of the connection end 111 , and the paddle 11 can move axially along the rotating shaft 12 .

In a specific application, in the unfolded state, since the first limiting portion can limit the head portion of the connecting end 111 , the second limiting portion can limit the root portion of the connecting segment 111 . In this way, the head and the root of the connecting end 111 can be simultaneously limited, avoiding the axial movement of the connecting end 111 and further improving the flight stability of the propeller.

Referring to FIG. 8 , it shows one of the structural schematic diagrams of another propeller in the unfolded state according to the embodiment of the present application. Referring to FIG. 9 , it shows a detailed structural schematic diagram of the position of the propeller B described in FIG. 8 . Referring to FIG. 10 , it shows The second structural schematic diagram of another propeller in the unfolded state of the embodiment of the present application is shown. Referring to FIG. 11 , a detailed structural schematic diagram of the position of the propeller C described in FIG. 10 is shown. Referring to FIG. 12 , it shows the implementation of the present application Another example of the structure of the propeller in a folded state.

As shown in FIGS. 8 to 12 , the second limiting portion may include a third clamping portion 108 provided on the upper paddle clamp 101 and a fourth clamping portion 109 provided on the lower paddle clamp 102; the third clamping portion The third clamping part 108 and the fourth clamping part 109 are disposed opposite to each other, and a second clamping space that can clamp the connecting end 111 is formed between the third clamping part 108 and the fourth clamping part 109; in the unfolded state, the connection The root of the end 111 is embedded in the two clamping spaces, and the third clamping portion 108 and the fourth clamping portion 109 abut against the root of the connecting end 111 to restrict the axial movement of the blade 11 along the rotating shaft 12; In the folded state, the root of the connecting end 111 slides out of the second clamping space, the third clamping portion 108 and the fourth clamping portion 109 release the abutment on the root of the connecting end 111, and the paddle 11 can be released. Axial movement along the shaft 12 .

Specifically, when the propeller is in the unfolded state, the third clamping portion 108 and the fourth clamping portion 109 abut against the root of the connecting end 111 to provide a reliable support force for the connecting end 111 and reduce the pressure of the propeller 11 in the Vibration during operation, and the stress condition of the paddle clip 10 is improved, so as to avoid the phenomenon of stress concentration in the paddle clip 10, so as to improve the service life of the paddle clip 10.

Optionally, the third clamping portion 108 is a protrusion facing the lower paddle clamp 102 , and the fourth clamping portion 109 is a protrusion facing the upper paddle clamp 101 , and the protrusion may specifically be a hemispherical protrusion. The third clamping portion 108 can be integrally formed with the upper paddle clip 101, and can also be connected to the upper paddle clip 101 by welding, bonding, fastener connection or clamping. Similarly, the fourth clamping portion 109 can be integrally formed with the lower paddle clip 102, or can be connected to the lower paddle clip 102 by welding, bonding, fastener connection or snap connection. The specific implementation manner of the four clamping portions 109 may not be limited.

In an optional embodiment of the embodiment of the present application, avoidance grooves 116 are respectively provided on both sides of the connection end 111 , and the avoidance grooves 116 may be used to avoid the third clamping portion 108 and the fourth clamping portion 109 . In practical applications, during the process of switching the paddle 10 from the folded state to the unfolded state, or during the process of switching the paddle 10 from the unfolded state to the folded state, the third clamping portion 108 The fourth clamping portion 109 and the fourth clamping portion 109 can slide in the avoidance groove 116 , so that the interference between the third clamping portion 108 and the fourth clamping portion 109 and the connecting end 111 can be avoided, which facilitates the unfolding or folding of the paddle 11 .

In some optional embodiments of the present application, the connecting end 111 of the paddle 11 may be provided with a third limiting portion; wherein, in the folded state, the third limiting portion may abut against the paddle clip 10 , restricting the axial movement of the paddle 11 along the rotating shaft 12 ; in the folded state, the third limiting portion can release the abutment with the paddle clip 10 , so that the paddle 10 can move axially along the rotating shaft 12 .

Specifically, the third limiting portion may include, but is not limited to, an elastic limiting member, a limiting bump, and the like, and the specific form of the third limiting portion may not be limited in the embodiment of the present application.

In the embodiment of the present application, the connecting end 111 may include a first side and a second side that are arranged away from each other, the first side of the connecting end 111 is close to the upper paddle clip 101, and the second side of the connecting end 111 may be close to the lower paddle clip 102; The third limiting portion may only be provided on the first side of the connecting end 111 , the second limiting portion may also be provided only on the second side of the connecting end 111 , or the third limiting portion may be simultaneously It is disposed on the first side and the second side of the two connecting ends, and the specific position of the third limiting portion on the connecting end 111 may not be limited in the embodiment of the present application.

Moreover, the third limiting portion may be disposed away from the connecting member 103 , the third limiting portion may also be disposed close to the connecting member 103 , or the third limiting portion may be simultaneously disposed away from the connecting member 103 and the connecting member 103 . For the position close to the connecting member 103 , the embodiment of the present application does not specifically limit the position of the third limiting portion relative to the connecting member 103 .

Optionally, the third limiting portion may include a first abutting portion provided on the first side and a second abutting portion provided on the second side; in the unfolded state, the The first abutting portion abuts against the upper paddle clip 101 , and the second abutting portion abuts against the lower paddle clip 101 to restrict the axial movement of the paddle 11 along the rotating shaft 12 ; in the folded state, the first The abutting portion is released from the upper paddle clip 101 , the second abutting portion is released from the lower paddle clip 102 , and the paddle 11 can move axially along the rotating shaft 12 .

In a specific application, the connection can be avoided to a certain extent under the abutting action of the first abutting portion and the upper paddle clip 101 and the abutting action of the second abutting portion and the lower paddle clip 102 The end 111 vibrates up and down, so that the vibration of the blade 11 can be reduced and the working stability of the blade 11 can be improved.

Optionally, the through hole 112 can be a waist-shaped hole, and the waist-shaped hole can slide along the rotating shaft 12 . By sliding the waist-shaped hole along the rotating shaft 12, the propeller can be switched between the unfolded state and the folded state. Moreover, when the propeller is in the folded state, the sliding of the waist-shaped hole along the rotating shaft 12 can facilitate the movement of the blade 11 along the axial direction of the rotating shaft 12 .

Specifically, the waist-shaped hole may include a long end and a short end, the long end of the waist-shaped hole is parallel to the direction of the connecting line between the tip and the root of the blade 11, and the short end of the waist-shaped hole is parallel to the direction of the connecting line of the blade 11. The direction of the connecting line between the tip of the blade 11 and the root is perpendicular, so that the long end of the waist-shaped hole can be moved along the direction of the connecting line between the tip and the root of the blade 11, so that the blade 11 can move along the rotating shaft 12. axial movement.

Optionally, there is a gap L between the short end of the waist-shaped hole and the rotating shaft 12; in the folded state, the long end of the waist-shaped hole can slide along the rotating shaft 12, so that the blade can slide along the rotating shaft 12. The rotating shaft moves axially to increase the freedom of movement of the connecting end 111 and realize the up and down turning of the paddle 11 .

In some embodiments of the present application, the cross-section of the waist-shaped hole perpendicular to the long end is a rectangle or a trapezoid. Similarly, the cross-section of the waist-shaped hole perpendicular to the short end is a rectangle or a trapezoid. The embodiment of the present application The cross-sectional shape of the long end and the short end of the waist-shaped hole may not be specifically limited.

Optionally, the through hole 112 may also be a circular hole. In a specific application, the diameter of the circular hole may be larger than the diameter of the rotating shaft 12, so that there is the gap between the circular hole and the rotating shaft 12. In this way, when the paddle 22 is in the folded state, Through the sliding of the circular hole along the rotating shaft 12 , the freedom of movement of the connecting end 111 can be increased, and the up and down turning of the paddle 11 can be realized.

Specifically, the cross-section of the circular hole is a rectangle or a trapezoid, and the embodiment of the present application may not specifically limit the cross-sectional shape of the circular hole.

It should be noted that, in the drawings of the embodiments of the present application, only the case where the through hole 112 is an elongated through hole is shown, and in practical applications, the case where the through hole 11 is a round hole can be referred to and executed.

In some optional embodiments of the present application, the height of the accommodating space S in the axial direction of the rotating shaft 12 is greater than the height of the connecting end 111 in the axial direction of the rotating shaft 11, so that when the propeller is in the folded state, the connecting end 111 It can move up and down along the rotating shaft 12 in the accommodating space S, so as to realize the upward turning of the paddle 10 and facilitate the storage of the paddle 10 .

Specifically, the side wall of the through hole 112 away from the blade body is the first side wall 113 ; as shown in FIG. 3 , when the propeller is in the unfolded state, when the motor rotates, the blade 11 is under the action of centrifugal force , the first side wall 113 is in contact with the rotating shaft 12, and a gap L is formed between the rotating shaft 12 and the through hole 112; when the propeller is in a folded state, due to the gap between the through hole 112 and the rotating shaft 12, the through hole 112 can be along the When the shaft 12 slides, the first side wall 113 of the through hole 112 can be separated from the shaft 12 , plus the height D of the accommodation space S and the height d of the connecting end 111 , the paddle 11 can flip up and down along the shaft 12 .

To sum up, the propellers described in the embodiments of the present application may at least include the following advantages:

In the embodiment of the present application, since the connecting end of the paddle is provided with a through hole, the paddle clip is provided with an accommodating space for accommodating the connecting end, and the rotating shaft passes through the through hole; in the unfolded state, the paddle clip is It can abut with the connecting end to limit the axial movement of the blade along the rotating shaft, avoid the axial movement of the blade, and improve the vibration of the propeller; in the folded state, the blade clamp The paddle can be released from the connection end, and the paddle can move axially along the rotating shaft, so that the paddle can be turned up along the rotating shaft. In this way, when the blade needs to be folded and stored, even if the plane of the folded blade is lower than the plane of the fuselage, the blade can still be stored up to the above the fuselage. In this way, the design that the plane of the fuselage must be lower than the plane of the blades can be avoided to a certain extent, the constraints on the design of the fuselage structure are reduced, and the structure is simple and compact.

An embodiment of the present application further provides a power suit, the power suit may specifically include: a motor and the propeller according to any one of the above embodiments, wherein a propeller clip of the propeller is connected to the motor.

In the embodiment of the present application, the structure of the propeller is the same as the structure of the propeller in the above-mentioned embodiments, which is not repeated here.

In a specific application, since the blade clip of the propeller is connected to the motor, the blades of the propeller can be deployed to a deployed state and rotated to provide lift under the driving of the motor. When the propeller needs to be folded, the propeller can be folded to a folded state by rotating the connecting end of the propeller around the rotating shaft. When the plane of the folded blade is lower than the plane of the fuselage, the blade can move axially along the rotating shaft because the blade clip can be released from the connection end, so that the The paddle can be turned up along the rotating shaft, the position of the paddle can be raised, and the paddle can be stored above the fuselage. In this way, the design that the plane of the fuselage must be lower than the plane of the blades can be avoided to a certain extent, the constraints on the design of the fuselage structure are reduced, and the application scenarios of the folding propeller can be broadened. Structural parts, easy to implement and low cost.

Referring to FIG. 13 , a schematic structural diagram of an unmanned aerial vehicle according to an embodiment of the present application is shown. Specifically, the unmanned aerial vehicle may include: a fuselage 100 , an arm 200 and a power suit 300 ; wherein the arm 200 is connected to In the body 100 , the power suit 300 is connected to the arm 200 . The UAV can be applied in various fields of production and life, especially in agricultural plant protection, aerial photography, patrol inspection, surveying and mapping, reconnaissance and other aspects.

In the embodiment of the present application, the fuselage 100 may be used as the structural main body of the UAV. The machine arm 200 can be used as a device of the fuselage 100 and the power suit 300. The machine arm 200 can be a folding machine arm. When the drone is required to work, the machine arm 200 can be unfolded. When stored, the arm 200 can be folded. The mechanism of the power suit 300 is the same as the structure of the power suit in the foregoing embodiment, and the beneficial effects are also similar, which will not be repeated here.

Reference herein to "one embodiment," "an embodiment," or "one or more embodiments" means that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the present application. Also, please note that instances of the phrase "in one embodiment" herein are not necessarily all referring to the same embodiment.

In the description provided herein, numerous specific details are set forth. It will be understood, however, that the embodiments of the present application may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The application can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, and third, etc. do not denote any order. These words can be interpreted as names.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be The technical solutions described in the foregoing embodiments are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions in the embodiments of the present application.

Claims

A propeller, characterized in that the propeller comprises: a propeller clamp, at least two propeller blades and at least two rotating shafts;

The connecting end of the paddle is provided with a through hole, the paddle clip is provided with an accommodating space for accommodating the connecting end, and the rotating shaft passes through the through hole;

Wherein, in the unfolded state, the paddle clip abuts against the connecting end, restricting the axial movement of the paddle along the rotating shaft;

In the folded state, the paddle clip is released from abutment with the connecting end, and the paddle can move axially along the rotating shaft.
The propeller according to claim 1, wherein the propeller clip includes a first limiting portion, and the first limiting portion is provided in the accommodating space; wherein,

In the folded state, the first limiting portion abuts against the connecting end to limit the axial movement of the paddle along the rotating shaft;

In the folded state, the first limiting portion is in contact with the connecting end, so that the paddle can move axially along the rotating shaft.
The propeller according to claim 2, wherein the propeller clip comprises: an upper propeller clip and a lower propeller clip arranged at a relative interval, and the accommodating space is formed between the upper propeller clip and the lower propeller clip;

The first limiting portion is provided on the upper paddle clip and/or the lower paddle clip.
The propeller according to claim 3, wherein the propeller clip further comprises: a connecting piece, the connecting piece is disposed between the upper propeller clip and the lower propeller clip, and is respectively connected with the upper propeller clip The central area of the clip and the central area of the lower propeller clip are fixedly connected;

The first limiting portion is disposed away from the connecting piece;

And/or, the first limiting portion is disposed close to the connecting piece.
The propeller according to claim 4, wherein the first limiting portion comprises a first clamping portion provided on the upper propeller clamp and a second clamping portion provided in the lower propeller clamp;

The first clamping portion and the second clamping portion are disposed opposite to each other, and a first clamping space capable of clamping the connecting end is formed between the first clamping portion and the second clamping portion;

In the unfolded state, the connecting end is embedded in the first clamping space, and both the first clamping portion and the second clamping portion are abutted against the connection end to restrict the paddle The vane moves axially along the shaft;

In the folded state, the connecting end slides out from the first holding space, the first holding part and the second holding part release the abutment on the connecting end, and the paddle The vanes are axially movable along the shaft.
The propeller according to claim 5, wherein a first guide structure is provided on a side of the first clamping portion close to the connecting piece, and a side of the second clamping portion close to the connecting piece is provided A second guide structure is provided, and the first guide structure and the second guide structure can guide the connecting end into the first clamping space, or guide the connecting end from the first clamping space export inside.
The propeller according to claim 6, wherein the first guide structure and the second guide structure are both inclined planes.
The propeller according to claim 6, wherein the first guide structure and the second guide structure are both curved surfaces.
The propeller according to claim 6, wherein the connecting end is provided with a third guide structure on the edge of the side close to the upper propeller clip, and the connecting end is located on the side close to the lower propeller clip The edge is provided with a fourth guide structure, the third guide structure is used to cooperate with the first guide structure, and the fourth guide structure is used to cooperate with the second guide structure to guide the connecting end into The first clamping space, or the connecting end is led out from the first clamping space.
The propeller according to claim 9, wherein the third guide structure and the fourth guide structure are both inclined planes.
The propeller according to claim 9, wherein the third guide structure and the fourth guide structure are both curved surfaces.
The propeller according to claim 5, wherein the first clamping portion is a protrusion that protrudes toward the lower propeller clip, and the second clamping portion is a protrusion that protrudes toward the upper propeller clip. bump.
The propeller according to claim 4, wherein the propeller clip further comprises a second limiting portion, and the second limiting portion is provided in the accommodating space; wherein,

In the folded state, the second limiting portion abuts against the connecting end to limit the axial movement of the paddle along the rotating shaft;

In the folded state, the second limiting portion releases the abutment on the connecting end, so that the paddle can move axially along the rotating shaft.
The propeller according to claim 13, wherein the second limiting portion is disposed close to the connecting piece, and the first limiting portion is disposed away from the connecting piece;

In the unfolded state, the first limiting portion abuts against the head of the connecting end, and the second limiting portion abuts against the root portion of the connecting end, restricting the blade along the rotating shaft. movement;

In the folded state, the first limiting portion is released from abutment with the head of the connecting end, the second limiting portion is released from abutting with the tail of the connecting end, and the paddle can move along the The shaft moves axially.
The propeller according to claim 14, wherein the second limiting portion comprises a third clamping portion provided on the upper propeller clamp and a fourth clamping portion provided in the lower propeller clamp;

The third clamping portion and the fourth clamping portion are disposed opposite to each other, and a second clamping space capable of clamping the connecting end is formed between the third clamping portion and the fourth clamping portion;

In the unfolded state, the root portion of the connecting end is embedded in the two clamping spaces, the third clamping portion and the fourth clamping portion both abut against the root portion of the connecting end, restricting the The blade moves axially along the shaft;

In the folded state, the root portion of the connecting end slides out from the second clamping space, the third clamping portion and the fourth clamping portion release the abutment against the root portion of the connecting end, The paddle can move axially along the shaft.
The propeller according to claim 14, wherein the third clamping portion is a protrusion facing the lower propeller clip, and the fourth clamping portion is a protrusion facing the upper propeller clip.
The propeller according to claim 16, wherein the protrusion is a hemispherical protrusion.
The propeller according to claim 14, wherein the two sides of the connecting end are respectively provided with avoidance grooves, and the avoidance grooves are used to avoid the third clamping portion and the fourth clamping portion.
The propeller according to claim 1, wherein the connecting end is provided with a third limiting portion; wherein,

In the folded state, the third limiting portion is in abutment with the paddle clip to limit the axial movement of the paddle along the rotating shaft;

In the folded state, the third limiting portion is released from the abutment of the paddle clip, so that the paddle can move axially along the rotating shaft.
The propeller according to claim 19, wherein the propeller clip comprises: an upper propeller clip and a lower propeller clip arranged at a relative interval, and the accommodating space is formed between the upper propeller clip and the lower propeller clip;

The first side of the connecting end is close to the upper paddle clip, and the second side of the connecting end is close to the lower paddle clip;

The third limiting portion is provided on the first side and/or the second side.
The propeller according to claim 20, wherein the propeller clip further comprises: a connecting piece, the connecting piece is disposed between the upper propeller clip and the lower propeller clip, and is respectively connected with the upper propeller clip The central area of the clip and the central area of the lower propeller clip are fixedly connected;

The third limiting portion is disposed away from the connecting piece;

And/or, the third limiting portion is disposed close to the connecting piece.
The propeller according to claim 21, wherein the third limiting portion comprises a first abutting portion provided on the first side and a second abutting portion provided on the second side;

In the unfolded state, the first abutting portion abuts against the upper paddle clip, and the second abutting portion abuts against the lower paddle clip, restricting the paddle along the axial direction of the rotating shaft sports;

In the folded state, the first abutting portion is released from the upper paddle clip, the second abutting portion is released from the lower paddle clip, and the paddle can move along the rotating shaft Axial movement.
The propeller according to claim 1, wherein the through hole is a waist-shaped hole, and the waist-shaped hole can slide along the rotating shaft.
The propeller according to claim 23, wherein the long end of the waist-shaped hole is parallel to the direction of the connecting line between the tip and the root of the blade, and the short end of the waist-shaped hole is parallel to the blade. The blade tip is perpendicular to the connecting line of the blade root.
The propeller according to claim 24, wherein there is a gap between the short end of the waist-shaped hole and the rotating shaft;

In the folded state, the long end of the waist-shaped hole can slide along the rotating shaft, so that the paddle can move axially along the rotating shaft.
The propeller according to claim 24, wherein the cross section of the waist-shaped hole perpendicular to the long end is rectangular or trapezoidal.
The propeller according to claim 24, wherein the cross section of the waist-shaped hole perpendicular to the short end is rectangular or trapezoidal.
The propeller according to claim 1, wherein the through hole is a circular hole.
The propeller according to claim 28, wherein the diameter of the circular hole is larger than the diameter of the rotating shaft, so that there is the gap between the circular hole and the rotating shaft;

In the folded state, the circular hole can slide along the rotating shaft, so that the paddle moves axially along the rotating shaft.
The propeller according to claim 28, wherein the cross section of the circular hole is rectangular or trapezoidal.
The propeller according to any one of claims 1 to 30, wherein the height of the accommodating space in the axial direction of the rotating shaft is greater than the height of the connecting end in the axial direction of the rotating shaft.
A power suit, characterized by comprising: a motor and the propeller according to any one of claims 1 to 31, wherein a propeller clip of the propeller is connected to the motor.
An unmanned aerial vehicle, characterized by comprising: a fuselage, an arm and the power suit of claim 32; wherein,

The arm is connected to the fuselage, and the power suit is connected to the arm.