CN219668513U

CN219668513U - Folding propeller, power assembly and aircraft

Info

Publication number: CN219668513U
Application number: CN202320807447.4U
Authority: CN
Inventors: 黄道博
Original assignee: Shenzhen Vispractice Intelligent Aviation Technology Co ltd
Current assignee: Shenzhen Vispractice Intelligent Aviation Technology Co ltd
Priority date: 2023-04-03
Filing date: 2023-04-03
Publication date: 2023-09-12
Anticipated expiration: 2033-04-03

Abstract

The utility model provides a folding propeller, a power assembly applying the folding propeller and an aircraft applying the power assembly. The folding propeller is provided with a boss, the connecting hole with the section width gradually widened in the process of extending from the working area to the non-working area, and a propeller clamp provided with a rotating shaft hole and a clamping groove. The positions of the paddle clamp and the paddles are relatively fixed through the correspondence between the clamping grooves and the bosses, so that shimmy is avoided, and the pneumatic performance is optimized; through setting up cross-section width gradually the connecting hole that widens with include the oar clamp of sliding tray, realized that the paddle can slide for the oar clamp, realized automatic collapsible.

Description

Folding propeller, power assembly and aircraft

[ field of technology ]

The utility model relates to the field of aircrafts, in particular to a folding propeller, a power assembly applying the folding propeller and an aircraft applying the power assembly.

[ background Art ]

At present, in the field of aircrafts, a double-bladed propeller is taken as an important part of power output, and the structural design of the double-bladed propeller is crucial to the aircraft. The existing double-blade propeller can be divided into two types, wherein one type is a straight propeller and the other type is a folding propeller, the straight propeller is integrally designed and manufactured, and two blades are integrally formed. The straight paddle has heavy weight in the use process, and is not easy to transport and take; further, if one blade in the straight blade is damaged, the whole straight blade is scrapped, and the use cost is increased. Wherein folding oar is components of a whole that can function independently design, connects through the connecting piece between two paddles, and folding oar can rotate around its pivot to realize folding function.

The current folding oar passes through the connecting piece and directly connects two paddles, and the mode of adding external force through the connecting piece is fixed folding oar, leads to the paddle to receive the exogenic action of other directions more at actual rotatory in-process to under the effect of additional external force and centrifugal force, very easy shimmy leads to the pneumatic efficiency of paddle to reduce, has directly influenced unmanned aerial vehicle's flight performance and duration, and current folding screw folding operation is inconvenient simultaneously, is difficult to take.

[ utility model ]

Aiming at the technical problems that a folding propeller in the prior art is easy to swing and shake, the pneumatic efficiency of a blade is reduced, and further the flight performance and the endurance time of an unmanned aerial vehicle are affected, the utility model provides the folding propeller, a power assembly applying the folding propeller and an aircraft applying the power assembly.

Wherein, folding screw includes paddle and connecting portion. The connecting part and the blade are integrally designed and are positioned at one end of the blade, the connecting part is provided with a first surface and a second surface, and the first surface and the second surface are oppositely arranged; the connecting part comprises a boss and a connecting hole, the boss is arranged on the first surface of the connecting part, the connecting hole penetrates through holes of the first surface and the second surface, the boss and the connecting hole are arranged at intervals, the connecting hole comprises a working area and a non-working area, and the working area is a part of the area of the connecting hole; the non-working area is another partial area of the connecting hole, the working area is communicated with the non-working area, and the working area and the non-working area form the connecting hole together; the location of the non-working area is between the working area and the boss.

Further, the first surface is taken as a section, and the section width of the connecting hole gradually widens in the process of extending from the working area to the non-working area.

Further, the folding propeller further comprises a propeller clamp, and the propeller clamp is connected with the connecting part; the paddle clamp comprises an upper surface and a lower surface, the upper surface and the lower surface are oppositely arranged, the paddle clamp is provided with a rotating shaft hole and a clamping groove, the rotating shaft hole penetrates through the upper surface and the lower surface, and the positions of the rotating shaft hole and the connecting hole are correspondingly arranged; the clamping groove is formed in the lower surface; the clamping grooves correspond to the bosses in position.

Further, the clamping groove comprises a positioning groove and a sliding groove, the positioning groove corresponds to the boss in position, the positioning groove is arranged on one side of the sliding groove, the sliding groove is communicated with the positioning groove, and the positioning groove and the sliding groove are formed into the clamping groove together.

Further, the paddle clamp further comprises a shaft hole, the shaft hole penetrates through the upper surface and the lower surface, and the shaft hole and the rotating shaft hole are arranged at intervals.

Further, the shape of the positioning groove is matched with the shape of the boss.

The utility model also provides a power assembly which comprises a motor, an output shaft and a folding propeller, wherein the output shaft is connected with the motor.

The folding propeller comprises a blade and a connecting part. The connecting part and the blade are integrally designed and are positioned at one end of the blade, the connecting part is provided with a first surface and a second surface, and the first surface and the second surface are oppositely arranged; the connecting part comprises a boss and a connecting hole, the boss is arranged on the first surface of the connecting part, the connecting hole penetrates through holes of the first surface and the second surface, the boss and the connecting hole are arranged at intervals, the connecting hole comprises a working area and a non-working area, and the working area is a part of the area of the connecting hole; the non-working area is another partial area of the connecting hole, the working area is communicated with the non-working area, and the working area and the non-working area form the connecting hole together; the location of the non-working area is between the working area and the boss.

Further, the folding propeller is connected with the output shaft, and the motor, the output shaft and the folding propeller are sequentially connected.

Further, the output shaft corresponds to the shaft hole in position, and the paddle clamp is matched with the output shaft through the shaft hole; the connecting hole is connected with the rotating shaft hole, and the folding propeller is matched with the propeller clamp through the connecting hole.

The utility model also provides an aircraft, which comprises a fuselage, a horn and a power assembly, wherein the fuselage is connected with the horn; the power assembly is connected with the horn, and the machine body, the horn and the power assembly are sequentially connected. The power assembly comprises a motor, an output shaft and a folding propeller, and the output shaft is connected with the motor.

Furthermore, the horn and the machine body are integrally designed.

Compared with the prior art, the utility model provides the folding propeller, the power assembly applying the folding propeller and the aircraft applying the power assembly. The folding propeller is provided with a boss, the connecting hole with the section width gradually widened in the process of extending from the working area to the non-working area, and a propeller clamp provided with a rotating shaft hole and a clamping groove. The positions of the paddle clamp and the paddles are relatively fixed through the correspondence between the clamping grooves and the bosses, so that shimmy is avoided, and the pneumatic performance is optimized; through setting up cross-section width gradually the connecting hole that widens to and including the oar clamp of sliding tray, realized that the paddle can be for oar clamp concertina movement, realized automatic collapsible.

[ description of the drawings ]

For a clearer description of the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:

FIG. 1 is a schematic structural view of an aircraft 10 provided by the present utility model;

FIG. 2 is a schematic illustration of the configuration of the power assembly 15 shown in FIG. 1;

fig. 3 is a schematic structural view of the folding propeller 155 shown in fig. 2;

fig. 4 is a schematic view of a disassembled structure of the folding propeller 155 shown in fig. 2;

fig. 5 is a schematic structural view of the connection portion 1553 shown in fig. 3;

FIG. 6 is a schematic view of the configuration of paddle clip 1555 shown in FIG. 4;

fig. 7 is a schematic structural view of the operation state of the folding propeller 155;

fig. 8 is a schematic view of a structure in which the folding propeller 155 is folded;

fig. 9 is a schematic structural view of the connection hole 155313 according to an embodiment of the present utility model;

fig. 10 is a schematic structural view of the connection hole 155313 according to another embodiment of the present utility model;

FIG. 11 is a schematic view of the boss 155311 in an embodiment of the utility model;

fig. 12 is a schematic view of a boss 155311 according to another embodiment of the present utility model.

[ detailed description ] of the utility model

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order that the utility model may be readily understood, a more particular description thereof will be rendered by reference to specific embodiments that are illustrated in the appended drawings. It will be understood that when an element is referred to as being "fixed" to another element, it can be directly on the other element or one or more intervening elements may be present therebetween. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or one or more intervening elements may be present therebetween. The terms "upper," "lower," "inner," "outer," "top," "bottom," and the like as used in this specification are used in an orientation or positional relationship based on that shown in the drawings, merely to facilitate the description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an aircraft 10 according to the present utility model, the aircraft 10 includes a fuselage 11, a horn 13, and a power assembly 15, wherein the fuselage 11 is connected to the horn 13, and the horn 13 is connected to the power assembly 15, that is, the fuselage 11, the horn 13, and the power assembly 15 are sequentially connected. The power assembly 15 provides flight power to the fuselage 11 and horn 13.

It should be noted that, the horn 13 and the body 11 may be integrally designed, or may be connected by a connector.

It should be noted that the aircraft 10 may be interpreted in an expanded manner herein, and includes not only various conventional unmanned aerial vehicles, rockets, and other aircraft, but also devices moving under water, and, in combination, any aircraft that is suitable for hydrodynamic forces during actual movement is within the scope of the present utility model.

Referring to fig. 2, fig. 2 is a schematic structural diagram of the power assembly 15 shown in fig. 1, where the power assembly 15 includes a motor 151, an output shaft 153, and a folding propeller 155, where the motor 11 is installed at one end of the horn 13, and the motor 151 is connected to the folding propeller 155 through the output shaft 153 in a chain manner, so as to output power of the motor 151 to the folding propeller 155. In the installation process, the rotor of the motor 151 and the output shaft 153 rotate together, and then the output shaft 153 and the folding propeller 155 are fixedly connected, so that the folding propeller 155 rotates along with the output shaft 153.

The connection between the motor 151 and the output shaft 153, and the connection between the output shaft 153 and the folding propeller 155 may be a screw connection, a rivet connection, a bolt connection, or the like, as long as the output transmission of power is realized.

The power assembly further includes a folding shaft 157, the folding shaft 157 being mounted inside the folding propeller 155.

Referring to fig. 3 and 4, fig. 3 is a schematic structural view of the folding propeller 155 shown in fig. 2, and fig. 4 is a schematic structural view of the folding propeller 155 shown in fig. 2, wherein the folding propeller 155 includes blades 1551, a connection portion 1553 and a blade clip 1555. The blade 1551 and the connecting portion 1553 are integrally formed, the blade 1551 provides power for the aircraft 10, the connecting portion 1553 is connected with the blade clamp 1555, and the blade clamp 1555, the connecting portion 1553 and the blade 1551 are sequentially arranged.

Referring to fig. 5, fig. 5 is a schematic structural diagram of the connection portion 1553 shown in fig. 3, the connection portion 1553 is located at one end of the paddle 1551, the connection portion 1553 is flat and includes a first surface 15531 and a second surface 15533, the first surface 15531 and the second surface 15533 are oppositely disposed, the first surface 15531 is provided with a boss 155311, the first surface 15531 of the connection portion is further provided with a connection hole 155313, the connection hole 155313 penetrates through the first surface 15531 and the second surface 15533, the boss 155311 and the connection hole 155313 are disposed at intervals, and the connection hole 155313, the boss 155311 and the paddle 1551 are sequentially disposed along a direction away from the motor 151.

The attachment aperture 155313 includes a working area 1553131 and a non-working area 1553133, wherein the working area 1553131 is a partial area of the attachment aperture 155313; the non-working area 1553133 is another partial area of the connecting hole 155313, and the working area 1553131 and the non-working area 1553133 are communicated to form the connecting hole 155313 together; the non-working area 1553133 is positioned between the working area and the boss 155311.

Referring to fig. 6, fig. 6 is a schematic structural view of the paddle clip 1555 shown in fig. 4, where the paddle clip 1555 is connected to the connection portion 1553; the paddle clamp 1555 includes an upper surface 15557 and a lower surface 15559, the upper surface 15557 and the lower surface 15559 are disposed opposite to each other, the paddle clamp 1555 is provided with a rotation shaft hole 15551 and a clamping groove 15553, wherein the rotation shaft hole 15551 penetrates through the upper surface 15557 and the lower surface 15559, and the rotation shaft hole 15551 and the connection hole 155313 are disposed correspondingly; the clamping groove 15553 is formed on the lower surface 15559; the clamping groove 15553 corresponds to the boss 155311. The paddle clip 1555 further includes a shaft hole 15555, wherein the shaft hole 15555 penetrates through the upper surface 15557 and the lower surface 15559, and the shaft hole 15555 and the rotating shaft hole 15551 are arranged at intervals.

The positioning groove 15553 corresponds to the boss 155311, and the positioning groove 155531 corresponds to the boss 155311, and has the same shape, the positioning groove 155531 is disposed on one side of the sliding groove 155533, and the sliding groove 155533 is communicated with the positioning groove 155531, which together form the clamping groove 15553. It should be noted that, the shape of the positioning groove 155531 is matched with the shape of the boss 155311, so as to play a role of limiting.

In this embodiment, the positioning groove 155531 is square in shape.

Referring to fig. 7, fig. 7 is a schematic structural diagram of an operating state of the folding propeller 155, in the operating process, the paddle clamp 1555 is connected with the connecting portion 1553, wherein the paddle 1551 is subjected to centrifugal force in the rotating process, so that the boss 155311 on the connecting portion 1553 slides into the positioning groove 155531 in the paddle clamp 1555, the boss 155311 is in fit with the positioning groove 155531, and the two positions are clamped, so that the positions of the paddle clamp 1555 and the connecting portion 1553 are relatively fixed in the operating process of the folding propeller. Meanwhile, the folding shaft 157 sequentially passes through the rotating shaft hole 15551 and the connection hole 155313, and is subjected to centrifugal force, the folding shaft 157 moves relatively in the connection hole 155313 from the non-working area 1553133 to the working area 1553131, and the working area 1553131 limits the folding shaft 157, so that connection between the connection portion 1553 and the paddle clamp 1555 is achieved through the folding shaft 157.

Referring to fig. 8, fig. 8 is a schematic diagram illustrating a structure of folding the folding screw 155, in which the paddle holder 1555 is connected to the connection portion 1553 during a non-operation process of the folding screw 155, wherein in a non-rotation state of the paddle 1551, centrifugal force disappears, the paddle 1551 is pushed toward the motor 151 by an external force, so that the boss 155311 on the connection portion 1553 slides into the sliding groove 155533 in the paddle holder 1555, and the folding shaft 157 moves relatively in the connection hole 155313, and moves from the working area 1553131 to the non-working area 1553133. The positions of the paddle clip 1555 and the connection 1553 are no longer fixed relative to each other, and the boss 155311 can slide in the sliding groove 155533, so that the connection 1553 can rotate relative to the paddle clip 1555, and the paddle 1551 can be folded.

The shape of the folding shaft 157 may be a quadrangular prism, a cylinder, a triangular prism, or the like.

Further, in the schematic structural view of the connection portion 1553 shown in fig. 3, the cross-sectional shape of the entire connection hole 155313 is formed in a waist shape or a racetrack shape.

Referring to fig. 9, in an embodiment of the present utility model, the connecting hole 155313 has a structure with the first surface 15531 as a cross section, and the cross section width of the connecting hole 155313 gradually widens during the process of extending the connecting hole 155313 from the working region 1553131 to the non-working region 1553133.

Referring to fig. 10, in another embodiment of the present utility model, the first surface 15531 is taken as a cross-section of the connecting hole 155313, and the cross-section width of the connecting hole 155313 is not changed during the process of extending from the working region 1553131 to the non-working region 1553133 of the connecting hole 155313.

Note that the dashed lines in fig. 9 and 10 serve as labeling lines for more clearly dividing the connection hole 155313 into the working area 1553131 and the non-working area 1553133.

It should be noted that, regardless of how the widths of the working area 1553131 and the non-working area 1553133 change during the process of extending the connection hole 155313 from the working area 1553131 to the non-working area 1553133, both may be realized in a non-working state, and the folding shaft 157 may move between the working area 1553131 and the non-working area 1553133, so that the connection portion 1553 may rotate relative to the paddle clip 1555, and thus the paddle 1551 may be folded.

The boss 155311 protrudes from the first surface 15531, and the boss 155311 may have a shape such as a quadrangular prism, a cylindrical body, or a triangular prism, as long as the boss can provide a limiting function. In the schematic structural view of the connection portion 1553 shown in fig. 3, the boss 155311 is a quadrangular prism. It should be noted that, when the boss 155311 is a quadrangular prism, the positioning groove 155531 is also a quadrangular prism, and the two shapes are identical, so as to realize a limiting function.

Referring to fig. 11, in an embodiment of the present utility model, the boss 155311 is a cylinder. It should be noted that, when the boss 155311 is a cylinder, the positioning groove 155531 is also cylindrical, and the two shapes are identical, so as to realize a limiting function.

Referring to fig. 12, in an embodiment of the present utility model, the connection portion 1553 is schematically shown, wherein the boss 155311 is a triangular prism. It should be noted that, when the boss 155311 is a triangular prism, the positioning groove 155531 is also a triangular prism, and the two shapes are identical, so as to realize a limiting function.

It should be noted that, in the embodiments, the shape of the boss 155311, the shape of the folding shaft 157, the cross-sectional shape of the connecting hole 155313, the shape of the sliding groove 155533 and the shape of the positioning groove 155531 may be changed according to actual needs, so long as the matching between the components in the assembly process is satisfied, and the smooth movement of each other is achieved.

Compared with the prior art, the folding propeller 155 provided by the utility model is provided with the boss 155311 on the connecting part 1553, the propeller clip 1555 is provided with the positioning groove 155531, the boss 155311 and the positioning groove 155531 which are in shape fit, so that the limit is realized; the connecting portion 1553 is provided with the connecting hole 155313, and the connecting hole 155313 is divided into the working area 1553131 and the non-working area 1553133, so that the paddle clip 1555 slides between the working area 1553131 and the non-working area 1553133 along with the folding shaft 157, thereby realizing the folding of the paddle 1551. In the working state, under the action of centrifugal force, the folding shaft 157 moves relatively in the connecting hole 155313, and moves from the non-working area 1553133 to the working area 1553131, and the working area 1553131 limits the folding shaft 157. The centrifugal force disappears, the paddle 1551 is pushed toward the motor 151 by the external force, so that the boss 155311 on the connection 1553 slides into the sliding groove 155533 in the paddle clip 1555, and the folding shaft 157 moves relatively in the connection hole 155313, and moves from the working area 1553131 to the non-working area 1553133. The positions of the paddle clip 1555 and the connection 1553 are no longer fixed relative to each other, and the boss 155311 can slide in the sliding groove 155533, so that the connection 1553 can rotate relative to the paddle clip 1555, and the paddle 1551 can be folded.

Through the design of the structure, the positions of the paddle clamp 1555 and the paddle 1551 are relatively fixed, so that shimmy is avoided, and the pneumatic performance is optimized; by providing the connecting hole 155313 with a gradually widening cross-sectional width and the paddle clip comprising the sliding groove 155533, the paddle 1551 can move telescopically relative to the paddle clip, and automatic folding is achieved.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. A folding propeller, comprising:

a paddle;

the connecting part and the blade are integrally designed and are positioned at one end of the blade, the connecting part is provided with a first surface and a second surface, and the first surface and the second surface are oppositely arranged;

the connection part includes:

a boss provided on the first surface;

the connecting hole, it is run through first surface with the through-hole of second surface, the boss with the connecting hole interval sets up, wherein the connecting hole includes:

a working area which is a partial area of the connection hole;

the non-working area is another partial area of the connecting hole, the working area and the non-working area are in a communication state, and the working area and the non-working area form the connecting hole together; the location of the non-working area is between the working area and the boss.

2. The folding propeller of claim 1, wherein the cross-sectional width of the connection hole gradually becomes wider in the course of extending from the working area to the non-working area with the first surface as a cross-section.

3. The folding propeller of claim 1, comprising:

a paddle clip connected to the connection portion; the oar presss from both sides including upper surface and lower surface, the upper surface with the lower surface sets up relatively, the oar presss from both sides and has seted up:

a rotation shaft hole penetrating through the upper surface and the lower surface, the rotation shaft hole and the connection hole being disposed at positions corresponding to each other;

the clamping groove is formed in the lower surface; the clamping grooves correspond to the bosses in position.

4. A folding propeller according to claim 3, wherein the clamping groove comprises:

the positioning groove corresponds to the boss in position;

the sliding groove is arranged on one side of the positioning groove, and the sliding groove is communicated with the positioning groove to form the clamping groove together.

5. The folding propeller of claim 4, wherein the propeller clip further comprises:

the shaft hole penetrates through the upper surface and the lower surface, and the shaft hole and the rotating shaft hole are arranged at intervals.

6. The folding propeller of claim 5 wherein the shape of the detent and the shape of the boss match.

7. A power assembly, comprising:

a motor;

the output shaft is connected with the motor;

the folding propeller of any one of claims 1 to 6, said folding propeller being connected to said output shaft, said motor, said output shaft and said folding propeller being connected in sequence.

8. The power assembly of claim 7, wherein,

the output shaft corresponds to the shaft hole in position, and the paddle clamp is matched with the output shaft through the shaft hole;

the connecting hole is connected with the rotating shaft hole, and the folding propeller is matched with the propeller clamp through the connecting hole.

9. An aircraft, comprising:

a body;

the machine body is connected with the machine arm;

the power assembly of claim 7, wherein the power assembly is coupled to the horn, and wherein the fuselage, the horn, and the power assembly are coupled in sequence.

10. The aircraft of claim 9, wherein the horn and fuselage are of unitary design.