CN214165276U

CN214165276U - Coupling assembling, frame and unmanned aerial vehicle

Info

Publication number: CN214165276U
Application number: CN202023282923.0U
Authority: CN
Inventors: 梁杰
Original assignee: Guangzhou Xaircraft Technology Co Ltd
Current assignee: Guangzhou Xaircraft Technology Co Ltd
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-09-10
Anticipated expiration: 2030-12-30

Abstract

The utility model relates to the technical field of unmanned aerial vehicles, in particular to a connecting assembly, a frame and an unmanned aerial vehicle; the coupling assembling includes: a connecting seat, one end of which is provided with a connecting groove; one end of the fixed seat extends into the connecting groove and is rotatably connected with the connecting seat; the end face gear assembly comprises a first end face gear and a second end face gear, the first end face gear is fixed on the first side of the fixed seat, and the second end face gear is arranged in the connecting seat in a sliding manner; and the locking component is used for driving the second end face gear to be meshed with the first end face gear so as to limit the rotation of the connecting seat. The connecting seat is rotatably connected with the fixed seat, and the arm of the unmanned aerial vehicle adopting the connecting assembly can be adjusted; the lock catch component drives the second end face gear to be meshed with the first end face gear so as to limit the rotation of the connecting seat; the machine arm can be locked after the machine arm is adjusted; can make the horn be in more stable state after the horn expandes or folds, increase the stability of unmanned aerial vehicle flight, improve user experience.

Description

Coupling assembling, frame and unmanned aerial vehicle

Technical Field

The utility model relates to an unmanned air vehicle technique field especially relates to a coupling assembling, frame and unmanned aerial vehicle.

Background

In recent years, with the development of aircrafts, the aircrafts attract attention from many aspects due to the advantages of flexibility, quick response, unmanned flight, low operation requirement and the like, and are applied to multiple fields of agriculture, exploration and the like.

Unmanned aerial vehicle usually includes the fuselage and outwards extends a plurality of horn from the fuselage, and the horn is provided with one or more power device on keeping away from the terminal of fuselage, and this power device can drive unmanned aerial vehicle flight, and however, unmanned aerial vehicle outwards extends the horn can increase unmanned aerial vehicle's volume, is not convenient for portablely. Therefore, foldable drones are designed.

However, in the prior art, the design of the connection structure of the folding unmanned aerial vehicle is unreasonable, the structure is complex, and after the horn is folded, the horn has the problems of shaking and overlarge virtual position, so that the unmanned aerial vehicle is unstable, and the user experience is poor.

Therefore, a connecting assembly, a rack and a drone are needed to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a coupling assembling, frame and unmanned aerial vehicle, it can make the horn be in more stable state, makes unmanned aerial vehicle more stable, has increased the stability of unmanned aerial vehicle flight, has improved user experience.

To achieve the purpose, the utility model adopts the following technical proposal:

in a first aspect, there is provided a connection assembly comprising:

a connecting seat, one end of which is provided with a connecting groove;

one end of the fixed seat extends into the connecting groove and is rotatably connected with the connecting seat;

the end face gear assembly comprises a first end face gear and a second end face gear, the first end face gear is fixed on the first side of the fixed seat, and the second end face gear is arranged in the connecting seat in a sliding mode;

and the locking component is used for driving the second face gear to be meshed with the first face gear so as to limit the rotation of the connecting seat.

As a preferable technical scheme of the connecting assembly, the fixing seat comprises a pivoting part, one end of the connecting seat is provided with two connecting lugs arranged at intervals and a connecting part for connecting the two connecting lugs, and the connecting lugs and the connecting part are enclosed to form the connecting groove; the pin joint part extends into the connecting groove and is rotationally connected with the connecting lug through a connecting shaft.

As a preferable technical scheme of the connecting assembly, a mounting groove is formed in the first side of the pivoting part, and the first end face gear is fixed in the mounting groove; the connecting seat is characterized in that a sliding hole is formed in the connecting lug on the first side of the connecting seat, the second end face gear is arranged in the sliding hole in a sliding mode, a first limiting portion is arranged on the outer peripheral wall of the second end face gear, a second limiting portion is arranged on the inner wall of the sliding hole, and the first limiting portion is matched with the second limiting portion to limit rotation of the second end face gear.

As a preferred technical scheme of coupling assembling, the connecting axle is worn to locate first face gear with second face gear, the hasp subassembly includes spanner piece, spanner piece's one end is provided with the eccentric wheel, the eccentric wheel with the first end of connecting axle is articulated, pulls spanner piece can make the eccentric wheel orders about second face gear with first face gear meshes mutually.

As a preferred technical scheme of coupling assembling, the hasp subassembly still includes the fitting piece, the fitting piece is located with sliding the cover on the connecting axle, and is located the eccentric wheel with between the second terminal surface gear.

As a preferred technical scheme of the connecting assembly, an arc-shaped groove matched with the eccentric wheel is formed in the matching piece, and the eccentric wheel part is located in the arc-shaped groove.

As a coupling assembling's preferred technical scheme, the face gear subassembly still includes third face gear and fourth face gear, the third face gear is fixed the second side of fixing base, fourth face gear sets up with sliding in the connecting seat, the locking components orders about the second face gear with when first face gear meshes mutually, the drive fourth face gear with third face gear meshes mutually.

As an optimal technical scheme of the connecting assembly, the connecting shaft can slide relative to the connecting seat, the connecting shaft penetrates through the third face gear and the fourth face gear, and the second end of the connecting shaft can drive the fourth face gear to be meshed with the third face gear.

As a preferable technical scheme of the connecting assembly, the mounting groove is formed in the second side of the pivoting part, and the third end gear is fixed in the mounting groove; the connecting seat second side be provided with on the engaging lug the slide opening, fourth face gear sets up with sliding in the slide opening, be provided with first spacing portion on fourth face gear's the periphery wall, be provided with the spacing portion of second on the inner wall of slide opening, first spacing portion with the spacing portion of second cooperatees, in order to restrict fourth face gear rotates.

The second aspect provides a frame, and it includes fuselage and horn, still includes as above coupling assembling, the fixing base connect in the fuselage, the connecting seat connect in the horn.

In a third aspect, there is provided an unmanned aerial vehicle comprising a power assembly and further comprising a frame as described above.

The utility model has the advantages that:

the connecting seat is rotatably connected with the fixed seat, so that the angle of the arm of the unmanned aerial vehicle adopting the connecting assembly relative to the body can be adjusted; the lock catch component drives the second end face gear to be meshed with the first end face gear so as to limit the rotation of the connecting seat; the machine arm can be locked after the machine arm is adjusted; can make the horn be in more stable state after the horn expandes or folds, can not have and rock etc. make unmanned aerial vehicle more stable, improve the stability of unmanned aerial vehicle flight, improve user experience.

Drawings

Fig. 1 is a perspective view of the unmanned aerial vehicle provided by the present invention after being unfolded;

fig. 2 is a perspective view of the folded unmanned aerial vehicle provided by the present invention;

fig. 3 is an exploded schematic view of the connection assembly provided by the present invention;

fig. 4 is a schematic structural view of a second face gear provided by the present invention;

fig. 5 is a schematic structural view of the first face gear and the third face gear provided by the present invention;

FIG. 6 is a schematic structural view of a wrench member provided by the present invention;

fig. 7 is a schematic structural diagram of the fitting member provided by the present invention.

In the figure: 10. a body; 20. a horn; 30. a foot rest; 40. a power assembly; 41. a motor; 42. a propeller;

50. a connecting assembly; 51. a connecting seat; 511. connecting lugs; 5111. a slide hole; 512. a connecting portion; 513. a connecting body;

52. a fixed seat; 521. a pivot part; 522. a fixed body;

53. an end face gear assembly; 531. a first face gear; 532. a second face gear; 5321. a first limiting part; 533. a third face gear; 534. a fourth face gear;

54. a latch assembly; 541. a wrench member; 5411. an eccentric wheel; 542. a mating member; 5421. an arc-shaped slot; 55. a connecting shaft; 551. a stop cap.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

Referring to fig. 1 and 2, the present embodiment discloses an unmanned aerial vehicle, which includes a frame, a foot rest 30 and a power assembly 40. The frame comprises a body 10, a horn 20 and a connecting assembly 50, wherein the horn 20 and the body 10 are rotatably connected through the connecting assembly 50.

In this embodiment, unmanned aerial vehicle is four rotor unmanned aerial vehicle, and power component 40 quantity is four, and four power component 40 distribute in the rectangle region around fuselage 10 through the support of horn 20, and every power component 40 is located a summit of rectangle.

Of course, the number of the power assemblies 40 may be changed as needed, for example, the number of the power assemblies 40 may be two, three, six, etc., even the number of the power assemblies 40 may be only one, and accordingly, the number of the horn 20 may also be set as appropriate according to the number of the power assemblies 40.

According to different application fields of the unmanned aerial vehicle, other loads capable of realizing specific tasks can be carried on the body 10, for example, when the unmanned aerial vehicle is used for aerial photography or surveying and mapping, the body 10 can be provided with shooting equipment of a stability-increasing cradle head; when the unmanned aerial vehicle is used for competitive games, the fuselage 10 can carry game devices and the like.

With continued reference to fig. 1 and 2, the horn 20 is rotatably coupled to the side of the fuselage 10 by a coupling assembly 50. The horn 20 is used to support the power assembly 40 and to distribute the power assembly 40 around the fuselage 10 in a predetermined pattern. Because horn 20 can connect in the lateral part of fuselage 10 with rotating, consequently, when unmanned aerial vehicle need not use, can rotate horn 20, fold horn 20, reduce unmanned aerial vehicle's volume, be convenient for accomodate and transport.

Referring to fig. 3 to 7, the connection assembly 50 includes a connection seat 51 and a fixing seat 52, and the fixing seat 52 is fixedly connected to the body 10, and may be fixed to the body 10 by welding or screwing. The connecting base 51 is connected to the arm 20, preferably, the arm 20 and the connecting base 51 are integrally formed in this embodiment, and may be fixedly connected by bonding or welding in other embodiments. One end of the connecting base 51 far away from the arm 20 is provided with a connecting groove, and one end of the fixing base 52 far away from the body 10 extends into the connecting groove and is rotatably connected with the connecting base 51.

Specifically, the fixing base 52 includes a pivot portion 521 and a fixing body 522 connected to each other, and the fixing body 522 is fixed to the body 10. The connection holder 51 includes a connection body 513, two connection lugs 511 and a connection part 512, and the connection holder 51 is integrally formed. The two engaging lugs 511 are disposed at an end of the connecting body 513 at an interval, the connecting portion 512 connects edges of the two engaging lugs 511, and the two engaging lugs 511 and the connecting portion 512 enclose to form a dustpan-shaped connecting slot. The pivot 521 extends into the connecting slot and is rotatably connected to the connecting base 51 through the connecting shaft 55.

The coupling assembly 50 also includes a face gear assembly 53. The face gear assembly 53 includes a first face gear 531 and a second face gear 532, the first face gear 531 is fixed on a first side of the fixing base 52, and the second face gear 532 is slidably disposed in the connecting base 51. Preferably, in this embodiment, the face gear assembly 53 further includes a third face gear 533 and a fourth face gear 534, the third face gear 533 is fixed on the second side of the fixed seat 52, and the fourth face gear 534 is slidably disposed in the connecting seat 51.

Specifically, the first side and the second side of the pivoting part 521 are both provided with mounting grooves, and the first end face gear 531 and the third end face gear 533 are respectively fixed in the mounting grooves of the first side and the second side. The first end face gear 531 and the third end face gear 533 may be integrally formed or may be of a separate structure. In this embodiment, the first end face gear 531 and the third end face gear 533 are integrally formed, and the whole is a columnar structure. The two mounting grooves form communicated mounting holes, and the integral structure is fixedly mounted in the mounting holes.

The two engaging lugs 511 of the connecting base 51 are each provided with a sliding hole 5111, and the second end face gear 532 and the fourth end face gear 534 are slidably disposed in the sliding holes 5111 of the two engaging lugs 511 respectively and can slide along the axial direction of the sliding holes 5111. The peripheral walls of the second end face gear 532 and the fourth end face gear 534 are provided with first limiting portions 5321, the inner wall of the sliding hole 5111 is provided with second limiting portions, and the first limiting portions 5321 are matched with the second limiting portions to limit the second end face gear 532 and the fourth end face gear 534 to rotate relative to the connecting seat 51. The outer peripheral surfaces of the portions of the second face gear 532 and the fourth face gear 534 where the first stopper portion 5321 is provided are prism-shaped, and correspondingly, the corresponding portions of the sliding holes 5111 are also prism-shaped. In the present embodiment, the hexagonal prism shape is preferable. Specifically, first spacing portion 5321 is the spacing arch of a plurality of towards the setting of terminal surface tooth, and spacing arch evenly lays along the circumference of face gear, and the spacing recess of spacing protruding matched with is for the second spacing portion. When the first end face gear 531 and the second end face gear 532 are engaged, the limit protrusion of the second end face gear 532 is positioned in the limit groove in the sliding hole 5111 to limit the second end face gear 532 from rotating relative to the connecting seat 51; when the third end face gear 533 and the fourth end face gear 534 are engaged, the limiting protrusion of the fourth end face gear 534 is located in the limiting groove in the sliding hole 5111 to limit the fourth end face gear 534 from rotating relative to the connecting base 51.

The fixing base 52 further comprises a latch assembly 54 for driving the second end face gear 532 to mesh with the first end face gear 531, and simultaneously driving the fourth end face gear 534 to mesh with the third end face gear 533 to restrict the rotation of the connecting base 51 even though the connecting base 51 is stationary relative to the fixing base 52.

The fixing base 52 further includes a connecting shaft 55 capable of sliding relative to the connecting base 51, the connecting shaft 55 is inserted into the first end face gear 531, the second end face gear 532, the third end face gear 533 and the fourth end face gear 534, and can slide relative to the first end face gear 531, the second end face gear 532 and the third end face gear 533 at least, in this embodiment, the connecting shaft 55 can slide relative to the first end face gear 531, the second end face gear 532, the third end face gear 533 and the fourth end face gear 534.

Specifically, the locking assembly 54 includes a wrench piece 541 and a fitting piece 542, an eccentric wheel 5411 is disposed at one end of the wrench piece 541, the eccentric wheel 5411 is hinged to the first end of the connecting shaft 55, and the wrench piece 541 is pulled to enable the eccentric wheel 5411 to drive the second end face gear 532 to engage with the first end face gear 531. The engaging member 542 is slidably sleeved on the connecting shaft 55 and located between the eccentric 5411 and the second end face gear 532. Fitting 542 is provided with an arcuate slot 5421 for engagement with cam 5411, with cam 5411 partially positioned within arcuate slot 5421. Specifically, a first end of the connecting shaft 55 is provided with a connecting hole, and is hinged with the eccentric wheel 5411 through a pin shaft. The second end of the connecting shaft 55 is provided with a stop cap 551, and the stop cap 551 is located on one side of the fourth end face gear 534 far away from the end face teeth thereof, and is used for driving the fourth end face gear 534 to move and preventing the fourth end face gear 534 from falling off.

Specifically, a second end of the connecting shaft 55 is connected with a screw, a nut of which is a stopper cap 551. The mating member 542 has a prismatic outer peripheral surface that matches the prismatic portion of the sliding hole 5111. When the inner side of the rod of the wrench 541 is attached to the connecting seat 51, the portion of the eccentric 5411 with the larger radius is located in the arc-shaped groove 5421, and the eccentric 5411 enables the fitting element 542 to be located at the position farthest from the first end of the connecting shaft 55, so that the fitting element 542 drives the second end face gear 532 to be meshed with the first end face gear 531, and simultaneously, the nut drives the fourth end face gear 534 to be meshed with the third end face gear 533, so that the connecting seat 51 cannot rotate relative to the fixing seat 52. When the outer side of the rod part of the wrench piece 541 is attached to the connecting seat 51, the part of the eccentric wheel 5411 with a smaller radius is located in the arc-shaped groove 5421, the eccentric wheel 5411 enables the fitting piece 542 to be located at the position closest to the first end of the connecting shaft 55, the fitting piece 542 and the nut can be enabled not to limit the second end face gear 532 and the fourth end face gear 534 any more, the second end face gear 532 can be enabled to be disengaged from the first end face gear 531, the fourth end face gear 534 can be disengaged from the third end face gear 533, the connecting seat 51 can rotate relative to the fixing seat 52, and the position of the machine arm 20 relative to the machine body 10 can be adjusted.

The position adjustment mode of the horn 20 relative to the body 10: when the position of the arm 20 needs to be adjusted, that is, the arm 20 needs to be unfolded or the arm 20 needs to be folded, the wrench piece 541 is pulled to make the outer side of the rod portion of the wrench piece 541 fit to the connecting seat 51, the portion of the eccentric wheel 5411 with the smaller radius is located in the arc-shaped groove 5421, the limitation on the second end face gear 532 and the fourth end face gear 534 is released, the second end face gear 532 and the first end face gear 531 can be disengaged, the fourth end face gear 534 and the third end face gear 533 can be disengaged, the connecting seat 51 can rotate relative to the fixing seat 52, and the position of the arm 20 relative to the body 10 can be adjusted. When the position of the arm 20 needs to be locked after the adjustment is completed, the wrench piece 541 is pulled, and when the inner side of the rod part of the wrench piece 541 is attached to the connecting seat 51, the portion with the larger radius of the eccentric wheel 5411 is located in the arc-shaped groove 5421, so that the fitting piece 542 drives the second end face gear 532 to be meshed with the first end face gear 531, and meanwhile, the nut drives the fourth end face gear 534 to be meshed with the third end face gear 533, so that the connecting seat 51 cannot rotate relative to the fixing seat 52, and the adjustment of the position of the arm 20 is completed.

With continued reference to fig. 1 and 2, the foot rest 30 serves as a support for the drone during landing. In the present embodiment, the number of the foot rests 30 is four. In other embodiments, the foot rests 30 may also be disposed at other positions of the drone, and the number of foot rests 30 may also be varied as desired.

Power assembly 40 provides the power of flight for unmanned aerial vehicle. Power component 40 sets up on the mount pad that corresponds, and power component 40 includes motor 41 and the screw 42 that links to each other with motor 41, and motor 41 can drive screw 42 and rotate, and then produces the power of drive unmanned aerial vehicle motion. The motor 41 may be any suitable type of motor 41, such as a brushless motor, a brushed motor, etc. The motor 41 can be connected to electronic components of the body 10, such as a flight control module, a battery, etc., to drive the propeller 42 to rotate at a predetermined rotational speed and in a steering direction. The motor 41 is fixed on the corresponding motor base, and can be electrically connected with the electronic components of the body 10 through a connecting wire arranged inside the horn 20. The propeller 42 is connected to an output shaft of the motor 41 and is rotatable with rotation of the output shaft. Preferably, screw 42 can be collapsible oar, and when unmanned aerial vehicle did not fly, screw 42 can be folded up to reduce unmanned aerial vehicle's volume, be convenient for accomodate and transport.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A connection assembly, comprising:

a connecting base (51) having a connecting groove formed at one end thereof;

a fixed seat (52), one end of which extends into the connecting groove and is rotatably connected with the connecting seat (51);

the end face gear assembly (53) comprises a first end face gear (531) and a second end face gear (532), the first end face gear (531) is fixed on the first side of the fixed seat (52), and the second end face gear (532) is arranged in the connecting seat (51) in a sliding mode;

a locking assembly (54) for driving the second face gear (532) to mesh with the first face gear (531) to limit the rotation of the connecting base (51).

2. The connecting assembly of claim 1, wherein the fixing base (52) comprises a pivoting portion (521), one end of the connecting base (51) is provided with two spaced-apart connecting lugs (511) and a connecting portion (512) connecting the two connecting lugs (511), and the connecting lugs (511) and the connecting portion (512) enclose to form the connecting slot;

the pivoting part (521) extends into the connecting groove and is rotatably connected with the connecting lug (511) through a connecting shaft (55).

3. The connecting assembly according to claim 2, wherein a first side of the pivot joint (521) is provided with a mounting groove, the first face gear (531) being fixed in the mounting groove;

the connecting seat (51) first side be provided with sliding hole (5111) on engaging lug (511), second terminal surface gear (532) set up with sliding in sliding hole (5111), be provided with first spacing portion (5321) on the periphery wall of second terminal surface gear (532), be provided with the spacing portion of second on the inner wall of sliding hole (5111), first spacing portion (5321) with the spacing portion of second cooperatees, in order to restrict second terminal surface gear (532) rotate.

4. The connecting assembly according to claim 2, wherein the connecting shaft (55) is inserted through the first face gear (531) and the second face gear (532), the locking assembly (54) comprises a wrench (541), an eccentric wheel (5411) is arranged at one end of the wrench (541), the eccentric wheel (5411) is hinged to the first end of the connecting shaft (55), and the wrench (541) enables the eccentric wheel (5411) to drive the second face gear (532) to mesh with the first face gear (531).

5. The connecting assembly according to claim 4, wherein the locking assembly (54) further comprises a fitting member (542), the fitting member (542) being slidably fitted over the connecting shaft (55) and located between the eccentric (5411) and the second face gear (532).

6. A connecting assembly according to claim 5, characterized in that the fitting element (542) is provided with an arc-shaped slot (5421) which cooperates with the cam (5411), the cam (5411) being partly located in the arc-shaped slot (5421).

7. A connection assembly according to claim 3, wherein the face gear assembly (53) further comprises a third face gear (533) and a fourth face gear (534), the third face gear (533) being fixed to the second side of the fixed seat (52), the fourth face gear (534) being slidably disposed within the connection seat (51), the latch assembly (54) driving the fourth face gear (534) and the third face gear (533) into engagement while the second face gear (532) is driven into engagement with the first face gear (531).

8. The connecting assembly according to claim 7, wherein the connecting shaft (55) is slidable with respect to the connecting seat (51), the connecting shaft (55) is disposed through the third face gear (533) and the fourth face gear (534), and the second end of the connecting shaft (55) can drive the fourth face gear (534) to mesh with the third face gear (533).

9. The connecting assembly according to claim 7, wherein the second side of the pivot joint (521) is provided with the mounting groove, the third face gear (533) being fixed within the mounting groove;

be provided with on engaging lug (511) of connecting seat (51) second side sliding hole (5111), fourth face gear (534) sets up with sliding in sliding hole (5111), be provided with first spacing portion (5321) on the periphery wall of fourth face gear (534), be provided with the spacing portion of second on the inner wall of sliding hole (5111), first spacing portion (5321) with the spacing portion of second cooperatees, in order to restrict fourth face gear (534) rotates.

10. Airframe, comprising a fuselage (10) and a horn (20), characterized in that it further comprises a connection assembly according to any one of claims 1 to 9, said fixing seat (52) being connected to said fuselage (10) and said connection seat (51) being connected to said horn (20).

11. A drone comprising a power assembly (40), characterized by further comprising a frame according to claim 10.