CN112340035A - Unmanned aerial vehicle's power unit and unmanned aerial vehicle - Google Patents

Abstract

The invention discloses a power mechanism of an unmanned aerial vehicle and the unmanned aerial vehicle, wherein the unmanned aerial vehicle comprises a horn device, the power mechanism comprises a power device and a driving device, the driving device comprises a driving assembly, an output shaft and a first transmission assembly, the output shaft can move relative to the horn device along the axial direction of the output shaft, the driving assembly is used for driving the output shaft to move, the first transmission assembly is used for transmitting the power of the output shaft to the power device so as to drive the power device to rotate around a preset axis relative to the horn device, and the preset axis is parallel to or coincided with the axis of the output shaft. According to the power mechanism of the unmanned aerial vehicle, the output shaft capable of moving along the axial direction of the power mechanism and the first transmission assembly are adopted to transmit the power of the driving assembly to the power device, the transmission form is simple, when the power mechanism is applied to the unmanned aerial vehicle, the flight state of the unmanned aerial vehicle can be conveniently and effectively changed, and the unmanned aerial vehicle is simple and compact in structure and small in size.

Description

Unmanned aerial vehicle's power unit and unmanned aerial vehicle

Technical Field

The invention relates to the technical field of unmanned aerial vehicles, in particular to a power mechanism of an unmanned aerial vehicle and the unmanned aerial vehicle.

Background

Along with the development of unmanned aerial vehicle technique, people can utilize unmanned aerial vehicle to accomplish a lot of work, for example: the fire extinguishing liquid spraying, aerial photography, electric power inspection, environment monitoring, disaster patrol and other works in forest fires. In the correlation technique, unmanned aerial vehicle generally is many rotor unmanned aerial vehicle, this kind of unmanned aerial vehicle has four basically, six or eight this kind even number rotors, after the rotor rotates, just can produce the thrust that rises, drive unmanned aerial vehicle takes off, in this kind of structural style, the rotor total distance is fixed unchangeable, through changing the relative speed between the different rotors, can change the size of unipolar propulsive force, thereby can change unmanned aerial vehicle's flight state, this kind of unmanned aerial vehicle is owing to the adoption be many rotor structures, consequently corresponding also need use a plurality of horn devices to support each rotor, thereby can lead to unmanned aerial vehicle's whole size great, unmanned aerial vehicle's structure is complicated, manufacturing cost is also than higher.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention aims to provide a power mechanism of an unmanned aerial vehicle, which can make the structure of the unmanned aerial vehicle small and exquisite when the power mechanism is applied to the unmanned aerial vehicle.

Another object of the present invention is to provide an unmanned aerial vehicle including the power mechanism.

According to the power mechanism of the unmanned aerial vehicle provided by the embodiment of the invention, the unmanned aerial vehicle comprises a horn device, the two ends of the length of the horn device are respectively an inner end and an outer end, and the power mechanism comprises: the power device is suitable for being arranged at the outer end of the machine arm device and can rotate around a preset axis relative to the machine arm device, and the power device comprises a power motor and a propeller connected with the power motor; the driving device comprises a driving assembly, an output shaft and a first transmission assembly, the output shaft is movable relative to the arm device along the axial direction of the output shaft, the output shaft is respectively connected with the driving assembly and the first transmission assembly, the first transmission assembly is connected with the power device, the driving assembly is used for driving the output shaft to move, the first transmission assembly is used for transmitting the power of the output shaft to the power device so as to drive the power device to rotate around the preset axis, and the preset axis is parallel to or coincident with the axis of the output shaft.

According to the power mechanism of the unmanned aerial vehicle, the driving device comprises the driving assembly, the output shaft and the first transmission assembly, the driving assembly is used for driving the output shaft to move, the first transmission assembly is used for transmitting the power of the output shaft to the power device so as to drive the power device to rotate around the preset axis relative to the arm device, when the power mechanism is applied to the unmanned aerial vehicle, the propeller can rotate around the axis to provide the power for the unmanned aerial vehicle to fly, and can also rotate around the preset axis to change the direction of the power, so that the flying state of the unmanned aerial vehicle can be conveniently and effectively changed, the use number of the arm device, the driving device and the power device in the unmanned aerial vehicle can be reduced, the structure of the unmanned aerial vehicle is simpler and more compact, the size of the unmanned aerial vehicle is smaller, the manufacturing cost is reduced, in addition, the output shaft capable of axially moving along the propeller, first drive assembly gives power device with power transmission again, and the transmission form is simple, and the realization of being convenient for can be in addition in actual processing assembly, can be according to unmanned aerial vehicle's concrete structure will predetermine the axis setting to parallel or the coincidence with the axis of output shaft, makes things convenient for structural layout, and the flexibility is high.

In some embodiments of the invention, the drive means is adapted to be mounted to an outer end of the horn means, the drive means being located below the power means.

In some embodiments of the present invention, the driving device further includes a housing, the housing is adapted to be connected to the horn device, a housing cavity is defined inside the housing, the driving assembly is disposed in the housing cavity, the housing is provided with an avoiding hole communicated with the housing cavity, one axial end of the output shaft is located in the housing cavity and connected to the driving assembly, and the other axial end of the output shaft passes through the avoiding hole and extends out of the housing and is connected to the first transmission assembly.

In some embodiments of the present invention, the driving assembly includes a steering engine and a second transmission assembly, the second transmission assembly is a gear transmission assembly, a primary gear of the gear transmission assembly is connected to a motor shaft of the steering engine, and a final gear of the gear transmission assembly is connected to the output shaft.

In some embodiments of the present invention, a first mounting hole extending along a central axis of the final gear is provided at the hub of the final gear, an inner circumferential wall of the first mounting hole is provided with an inner thread, and an outer circumferential wall of the output shaft is provided with an outer thread, and the inner thread is engaged with the outer thread.

In some embodiments of the present invention, the driving device further includes a housing, the housing is connected to the horn device, the power device further includes a mounting seat, the power motor is mounted on the mounting seat, and the mounting seat is detachably connected to the housing.

In some embodiments of the present invention, the first transmission assembly is a link transmission assembly, the link transmission assembly includes a first link, a second link and a third link, the second link is rotatably mounted on the housing, the first link is disposed between the output shaft and the second link, the first link is pivotally connected to the output shaft and the second link, respectively, the third link is disposed between the second link and the mounting seat, and the third link is pivotally connected to the second link and the mounting seat, respectively.

In some embodiments of the invention, the second link comprises a first segment and a second segment connected, a length centerline of the first segment being non-parallel to a length centerline of the second segment, the second link being pivotally connected to the housing at the connection of the first segment and the second segment, the first segment being pivotally connected to the first link, and the second segment being pivotally connected to the third link.

In some embodiments of the present invention, a rotating shaft is detachably mounted on the housing, the rotating shaft can rotate around the preset axis relative to the housing, and the mounting seat is detachably sleeved on the rotating shaft.

In some embodiments of the present invention, the mounting seat is connected to the rotating shaft by a spline.

In some embodiments of the present invention, the mounting seat is provided with a second mounting hole matched with the rotating shaft, the mounting seat includes a base and a cover plate, and the cover plate is detachably connected with the base and defines the second mounting hole together with the base.

According to the embodiment of the invention, the unmanned aerial vehicle comprises: a fuselage assembly; the two ends of the length of the horn device are respectively an inner end and an outer end, and the inner end of the horn device is connected with the machine body assembly; and the power mechanism.

According to the unmanned aerial vehicle provided by the embodiment of the invention, as the driving device comprises the driving component, the output shaft and the first transmission component, the driving component is used for driving the output shaft to move, the first transmission component is used for transmitting the power of the output shaft to the power device so as to drive the power device to rotate around the preset axis relative to the arm device, when the power device is applied to the unmanned aerial vehicle, the propeller can rotate around the axis to provide the power for the unmanned aerial vehicle to fly, and can also rotate around the preset axis to change the direction of the power device, so that the flying state of the unmanned aerial vehicle can be conveniently and effectively changed, the using number of the arm device, the driving device and the power device in the unmanned aerial vehicle can be reduced, the structure of the unmanned aerial vehicle is simpler and more compact, the size is smaller, the manufacturing cost is reduced, in addition, the output shaft capable of axially moving along, first drive assembly gives power device with power transmission again, and the transmission form is simple, and the realization of being convenient for can be in addition in actual processing assembly, can be according to unmanned aerial vehicle's concrete structure will predetermine the axis setting to parallel or the coincidence with the axis of output shaft, makes things convenient for structural layout, and the flexibility is high.

In some embodiments of the invention, the fuselage assembly includes an assembly body coupled to the horn device, a mounting frame coupled to the total cost and defining a mounting space, and a spacer positioned within and coupled to the mounting frame and dividing the mounting space into first and second spaced apart mounting spaces.

In some embodiments of the invention, the horn device includes a first arm segment coupled to the fuselage assembly and a second arm segment pivotally coupled to the first arm segment between an extended position in which a length centerline of the second arm segment coincides with a length centerline of the first arm segment and a folded position in which the length centerline of the second arm segment does not coincide with the length centerline of the first arm segment.

In some embodiments of the present invention, a first connecting member is disposed at an end of the first arm section close to the second arm section, a second connecting member is disposed at an end of the second arm section close to the first arm section, the first connecting member is pivotally connected to the second connecting member, and in the unfolding position, the first connecting member abuts against the second connecting member and is fixedly connected to the second connecting member by a fastening member.

In some embodiments of the present invention, the unmanned aerial vehicle includes two of the horn devices, two of the power devices, and two of the driving devices, and one of the power devices and one of the driving devices are respectively mounted at an outer end of each of the horn devices.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a perspective view of a drone according to an embodiment of the invention;

fig. 2 is a top view of a drone according to an embodiment of the invention;

fig. 3 is a schematic structural diagram of an installation frame of the unmanned aerial vehicle according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an arm device of the unmanned aerial vehicle according to an embodiment of the present invention;

fig. 5 is a perspective view of a first connector of the drone according to an embodiment of the invention;

figure 6 is a perspective view of a second connector of the drone according to an embodiment of the invention;

fig. 7 is a top view of an arm arrangement of a drone according to an embodiment of the invention;

FIG. 8 is a cross-sectional view taken along A-A of FIG. 7;

fig. 9 is a perspective view of a housing of a drive device of a drone according to an embodiment of the invention;

figure 10 is a perspective view of a second drive assembly location of the drone according to an embodiment of the present invention;

fig. 11 is a perspective view of a final gear of the drone according to an embodiment of the invention;

figure 12 is a perspective view of an output shaft of a drone according to an embodiment of the invention;

figure 13 is a perspective view of a first transmission assembly portion of a drone according to an embodiment of the present invention;

fig. 14 is an exploded view of a power plant of the drone according to an embodiment of the invention.

Reference numerals:

a drone 100;

a fuselage assembly 1; an assembly body 11; a mounting frame 12; the installation space 121; a first installation space 1211; a second mounting space 1212; a spacer 13;

a horn device 2; a first arm segment 21; a second arm segment 22; a first connecting member 23; a fitting groove 231; a second connecting member 24; a fitting projection 241;

a power plant 3; a power motor 31; a propeller 32; a mount 33; the second mounting hole 331; a base 332; a cover plate 333;

a drive device 4; a drive assembly 41; a steering engine 411; a second transmission assembly 412; a primary gear 4121; a final stage gear 4122; a first mounting hole 41221; an output shaft 42; a housing 43; a mounting chamber 431; relief holes 432; a rotating shaft 433; a first transmission assembly 44; a first link 441; the second link 442; a first pole segment 4421; a second pole segment 4422; the third link 443.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar 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 accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.

The power mechanism of the drone 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings, where for convenience of describing a specific operating principle of the power mechanism, the drone 100 according to an embodiment of the present invention is described first.

As shown in fig. 1 and 2, the unmanned aerial vehicle 100 according to the embodiment of the present invention includes a body assembly 1, a horn device 2, and a power mechanism, where the power mechanism includes a power device 3 and a driving device 4.

As shown in fig. 1 and 4, the length both ends of horn device 2 are inner and outer end respectively, and the inner of horn device 2 links to each other with fuselage assembly 1, and power device 3 locates the outer end of horn device 2 and can rotate around predetermineeing the axis relative to horn device 2, and power device 3 includes power motor 31 and the screw 32 that links to each other with power motor 31, and from this, when power device 3 worked, power motor 31 can drive screw 32 and rotate to flight for unmanned aerial vehicle 100 provides power.

As shown in fig. 8, 10 and 14, the driving device 4 includes a driving assembly 41, an output shaft 42 and a first transmission assembly 44, the output shaft 42 is movable relative to the arm device 2 along the axial direction of the output shaft 42, the output shaft 42 is respectively connected with the driving assembly 41 and the first transmission assembly 44, the first transmission assembly 44 is connected with the power device 3, the driving assembly 41 is used for driving the output shaft 42 to move, the first transmission assembly 44 is used for transmitting the power of the output shaft 42 to the power device 3 so as to drive the power device 3 to rotate relative to the arm device 2 around a preset axis, the preset axis is parallel to or coincided with the axis of the output shaft 42, therefore, when the driving device 4 works, the driving assembly 41 can drive the output shaft 42 to move along the axial direction of itself, because the output shaft 42 is also connected with the first transmission assembly 44, and the first transmission assembly 44 is connected with the power device 3, so that the axial movement of the output shaft 42 is changed through the, finally, the power device 3 can be driven to rotate around a preset axis relative to the arm device 2, so that the flight state of the unmanned aerial vehicle 100 can be changed, for example, the flight direction can be changed.

In the correlation technique, traditional unmanned aerial vehicle generally is many rotor unmanned aerial vehicle, this kind of unmanned aerial vehicle has four basically, six or eight this kind even number rotors, after the rotor rotates, just can produce the thrust that rises, drive unmanned aerial vehicle takes off, in this kind of structural style, the rotor overall pitch is fixed unchangeable, through changing the relative speed between the different rotors, can change the size of unipolar thrust, thereby can change unmanned aerial vehicle's flight state, this kind of unmanned aerial vehicle is owing to the adoption be many rotor structures, consequently corresponding also need use a plurality of horn devices to support each rotor, thereby can lead to unmanned aerial vehicle's whole size great, unmanned aerial vehicle's structure is complicated, manufacturing cost is also than higher.

Based on the above situation, the inventor creatively designs an unmanned aerial vehicle 100, a driving device 4 of the unmanned aerial vehicle 100 includes a driving assembly 41, an output shaft 42 and a first transmission assembly 44, the output shaft 42 is axially movable relative to the arm device 2 along itself, the output shaft 42 is respectively connected with the driving assembly 41 and the first transmission assembly 44, the first transmission assembly 44 is connected with the power device 3, when the driving device 4 works, the driving assembly 41 can finally drive the power device 3 to rotate around a preset axis parallel to or coincident with the axis of the output shaft 42 through the output shaft 42 and the first transmission assembly 44, and since the power device 3 includes the propeller 32, the propeller 32 can finally rotate around the preset axis relative to the arm device 2, that is, the propeller 32 can not only rotate around its own axis to provide the power for the unmanned aerial vehicle 100 to fly, but also can rotate around the preset axis to change the direction of the force, and thus the flight status of the drone 100 may be changed. Under this condition, alright in order to reduce power device 3's use quantity, and then can reduce the horn device 2 that links to each other with power device 3 and be used for driving power device 3's drive arrangement 4's quantity for unmanned aerial vehicle 100's structure is simpler, the size is smaller and more exquisite, overall structure is compacter, and can reduce unmanned aerial vehicle 100's manufacturing cost.

Note that, when the flight direction of the drone 100 is controlled by the drive device 4, for example, when the drone 100 flies in a vertical direction, the propeller 32 provides the drone 100 with a vertically upward lift, and the resultant force applied to the unmanned aerial vehicle 100 is in a vertical upward direction (it should be explained that the main force applied to the unmanned aerial vehicle 100 at this time may be a vertical upward lifting force and a gravity applied to the unmanned aerial vehicle 100 itself, and the lifting force is greater than the gravity), the propeller 32 can be driven by the driving device 4 to rotate around a preset axis to incline to a certain angle relative to the arm device 2, at this time, the direction of the force provided by the propeller 32 is correspondingly changed, the direction of the resultant force applied to the unmanned aerial vehicle 100 is also correspondingly changed, for example, if the propeller 32 rotates forward, the resultant force tilts forward, and the drone 100 flies forward; similarly, the screw 32 hypsokinesis rotates, then resultant force leans backward, and the unmanned aerial vehicle 100 flies backward, etc., and in addition, through adjusting the rotational speed of the screw 32 on the different horn devices 2 respectively, the unmanned aerial vehicle 100 can also realize actions such as turning left and right, and no description is given here.

In addition, it can follow self axial displacement's output shaft 42 here to have adopted one to come the power transmission of drive assembly 41 to transmit first transmission assembly 44, first transmission assembly 44 transmits power again for power device 3 in order to drive power device 3 around predetermineeing the axis and rotate, the transmission form is simple, and the realization of being convenient for, in the actual processing assembly, can be according to unmanned aerial vehicle 100's concrete structure with predetermineeing the axis setting to be parallel or the coincidence with the axis of output shaft 42, convenient structural configuration, the flexibility is high. Moreover, the first transmission assembly 44 is connected between the output shaft 42 and the power device 3, that is, the output shaft 42 is not directly connected with the power device 3, but is indirectly connected with the power device 3 through the first transmission assembly 44, so that according to the specific structural form of the first transmission assembly 44, more choices can be provided for the arrangement positions of the output shaft 42 and the power device 3, the flexibility is better, and the problem that the arrangement positions of the output shaft 42 and the power device 3 are limited due to the direct connection of the output shaft 42 and the power device 3 is avoided, and further the unmanned aerial vehicle 100 is inconvenient to process and assemble is further caused.

According to the unmanned aerial vehicle 100 of the embodiment of the invention, as the driving device 4 comprises the driving component 41, the output shaft 42 and the first transmission component 44, the driving component 41 is used for driving the output shaft 42 to move, the first transmission component 44 is used for transmitting the power of the output shaft 42 to the power device 3 so as to drive the power device 3 to rotate around the preset axis relative to the arm device 2, when the power device is applied to the unmanned aerial vehicle 100, the propeller 32 not only can rotate around the axis to provide the power for the unmanned aerial vehicle 100 to fly, but also can rotate around the preset axis to change the direction of the variable force, so that the flying state of the unmanned aerial vehicle 100 can be conveniently and effectively changed, and the using number of the arm device 2, the driving device 4 and the power device 3 in the unmanned aerial vehicle 100 can be reduced, the unmanned aerial vehicle 100 is simpler and more compact in structure, the size is smaller, the manufacturing cost is reduced, and in addition, the output shaft First transmission assembly 44, first transmission assembly 44 again gives power device 3 with power transmission, and the transmission form is simple, and the realization of being convenient for can be in addition in actual processing assembly, can be according to unmanned aerial vehicle 100's concrete structure will predetermine the axis setting to parallel or the coincidence with the axis of output shaft 42, makes things convenient for the structural layout, and the flexibility is high.

According to the power mechanism of the unmanned aerial vehicle 100 in the embodiment of the invention, since the driving device 4 comprises the driving component 41, the output shaft 42 and the first transmission component 44, the driving component 41 is used for driving the output shaft 42 to move, and the first transmission component 44 is used for transmitting the power of the output shaft 42 to the power device 3 so as to drive the power device 3 to rotate around the preset axis relative to the arm device 2, when the power mechanism is applied to the unmanned aerial vehicle 100, the propeller 32 not only can rotate around the axis of the propeller to provide the power for the unmanned aerial vehicle 100 to fly, but also can rotate around the preset axis to change the direction of the variable force, so that the flying state of the unmanned aerial vehicle 100 can be conveniently and effectively changed, and the number of the arm devices 2, the driving device 4 and the power device 3 in the unmanned aerial vehicle 100 can be reduced, the structure of the unmanned aerial, in addition, the output shaft 42 capable of moving along the self axial direction is adopted to transmit the power of the driving component 41 to the first transmission component 44, the first transmission component 44 transmits the power to the power device 3, the transmission form is simple, the implementation is convenient, in the actual processing and assembling process, the axis can be set to be parallel to or overlapped with the axis of the output shaft 42 according to the specific structure of the unmanned aerial vehicle 100, the structure layout is convenient, and the flexibility is high.

In some embodiments of the present invention, as shown in fig. 1, 7 and 8, the driving device 4 is installed at the outer end of the horn device 2, so that the installation of the driving device 4 is facilitated, and the space on the fuselage assembly 1 does not need to be occupied, meanwhile, since the driving device 4 can be close to the power device 3 after being installed at the outer end of the horn device 2, when the driving device 4 drives the power device 3 to rotate around the preset axis relative to the horn device 2, the driving distance is short, so that the working effectiveness and the working reliability of the driving device 4 can be improved, and the controllability of the unmanned aerial vehicle 100 can be improved, and the connection between the driving device 4 and the power device 3 is convenient, so that the assembly efficiency of the unmanned aerial vehicle 100 can be improved.

In some embodiments of the present invention, as shown in fig. 1 and 8, the driving device 4 may be located below the power device 3, so that the driving device 4 may drive the power device 3 to rotate around a preset axis below the power device 3, thereby avoiding the driving device 4 from affecting the installation and operation of the power device 3, and ensuring the operational reliability of the driving device 4 and the power device 3, and the reliability of the driving device 4 driving the power unit to rotate. However, the present invention is not limited to this, and the driving device 4 may be provided on the side of the power unit 3, for example.

When the driving device 4 is located below the power unit 3, the driving device 4 may be located directly below the power unit 3, or the driving device 4 may be located obliquely below the power unit 3, and the driving device 4 may be located entirely below the power unit 3 or partially below the power unit 3, as long as most of the driving device 4 is located below the power unit 3, which is not described herein again.

In some embodiments of the invention, as shown in fig. 9 and 10, the driving device 4 further comprises a housing 43, the housing 43 being connected to the horn device 2. Specifically, the housing 43 is externally fitted to the outer end of the arm unit 2, thereby simplifying the structure.

The specific connection form of the housing 43 and the horn device 2 is not limited. For example, the housing 43 may be fixedly connected to the horn device 2 by welding or bonding, so that the housing 43 and the horn device 2 have high connection strength; for example, the housing 43 is detachably connected to the device 2, so that the device 2 can be easily detached and assembled.

Further, as shown in fig. 10 and 13, a housing chamber 431 is defined inside the housing 43, the driving assembly 41 is disposed in the housing chamber 431, a relief hole 432 communicated with the housing chamber 431 is formed in the housing 43, one axial end of the output shaft 42 is located in the housing chamber 431 and connected to the driving assembly 41, and the other axial end of the output shaft 42 passes through the relief hole 432 and extends out of the housing 43 and is connected to the arm device 2, so that the housing 43 can also protect the driving assembly 41 and the output shaft 42 to prevent the driving assembly 41 from being exposed and easily damaged.

In some embodiments of the present invention, as shown in fig. 8 and 10, the driving assembly 41 includes a steering engine 411 and a second transmission assembly 412, the second transmission assembly 412 is a gear transmission assembly, a first-stage gear 4121 of the gear transmission assembly is connected to a motor shaft of the steering engine 411, and a last-stage gear 4122 of the gear transmission assembly is connected to the output shaft 42, so that the steering engine 411 and the output shaft 42 are not directly connected, and thus the gear transmission assembly can be used to generate a speed reduction or speed increase effect, and further the steering engine 411 with different powers can be set according to different situations, for example, when the gear transmission assembly is a speed reduction gear transmission assembly, the gear transmission assembly has a speed reduction and torque increase effect, so as to conveniently drive the power device 3 to rotate, and the gear transmission assembly has precise transmission and reliable transmission, when the driving device 4 drives the power device 3, fine adjustment of the inclination angle of, thereby can improve unmanned aerial vehicle 100's flight direction's controllability, simultaneously, can also utilize meshing pivoted characteristic between the gears of all levels among the gear drive assembly, realize at steering wheel 411 stop work time, make power device 3 can keep in this position to further improve unmanned aerial vehicle 100's controllability and the stability of flight.

It should be noted that, regarding the gear transmission assembly, when viewed from the power transmission direction, the gear connected to the input end is the first-stage gear 4121, the gear connected to the output end is the last-stage gear 4122, and the number of the intermediate gears participating in the meshing transmission between the first-stage gear 4121 and the last-stage gear 4122 is not limited, and the design can be selected according to the transmission requirement. In addition, the present invention is not limited to the specific structure of the gear transmission assembly, such as cylindrical gear transmission, bevel gear transmission, etc.

In some embodiments of the present invention, as shown in fig. 11 and 12, a first mounting hole 41221 extending along a central axis of the final gear 4122 is formed at a hub of the final gear 4122, an inner circumferential wall of the first mounting hole 41221 is provided with an inner thread, an outer circumferential wall of the output shaft 42 is provided with an outer thread, and the inner thread is matched with the outer thread, so that when the final gear 4122 rotates around its central axis, the output shaft 42 can be driven to move.

It will be appreciated that by changing the direction of rotation of the final stage gear 4122, the direction of movement of the output shaft 42 can be changed, so that by the reciprocating rotation of the final stage gear 4122, the reciprocating movement of the output shaft 42, and thus the reciprocating rotation of the power unit 3 about the predetermined axis, can be achieved.

In some embodiments of the present invention, as shown in fig. 13 and 14, the power device 3 further includes a mounting seat 33, the power motor 31 is mounted on the mounting seat 33, and the mounting seat 33 is detachably connected to the housing 43, thereby facilitating the mounting and dismounting of the mounting seat 33 and the housing 43.

It should be noted that, the detachable connection manner between the mounting seat 33 and the housing 43 is not limited, and may be selected according to actual requirements.

In some embodiments of the present invention, as shown in fig. 13, the first transmission assembly 44 is a link transmission assembly, and here, a link transmission form is adopted, because in the link transmission, different motion forms can be transmitted by adopting links with different length sizes, different structural forms and different numbers, so that transmission requirements can be better met, and the link itself has a simple structural form, and is convenient to manufacture and assemble.

Alternatively, as shown in fig. 13, the link transmission assembly includes a first link 441, a second link 442 and a third link 443, the second link 442 is rotatably mounted on the housing 43, the first link 441 is disposed between the output shaft 42 and the second link 442, the first link 441 is pivotally connected to the output shaft 42 and the second link 442, respectively, the third link 443 is disposed between the second link 442 and the mounting seat 33, and the third link 443 is pivotally connected to the second link 442 and the mounting seat 33, respectively, so that the axial movement of the output shaft 42 can be converted into the rotation of the mounting seat 33 about the predetermined axis by the transmission of the link transmission assembly.

It should be noted that, the number and structure of the connecting rods in the connecting rod transmission assembly are not limited in the present invention, and may be selected according to actual requirements, as long as the power of the output shaft 42 can realize the rotation of the mounting seat 33 around the preset axis after passing through the transmission function of the connecting rod transmission assembly.

In some embodiments of the present invention, as shown in fig. 13, the second link 442 includes a first link segment 4421 and a second link segment 4422 connected together, a length centerline of the first link segment 4421 is not parallel to a length centerline of the second link segment 4422, such that an angle is formed between the first link segment 4421 and the second link segment 4422, such that the second link 442 forms a corner at the connection of the first link segment 4421 and the second link segment 4422, the second link 442 is pivotally connected to the housing 43 at the connection of the first link segment 4421 and the second link segment 4422, the first link segment 4421 is pivotally connected to the first link 441, and the second link segment 4422 is pivotally connected to the third link 443, wherein the second link 442 is not a straight link, thereby facilitating the change of the transmission direction of the force, and enabling the link assembly to better satisfy the transmission requirement between the output shaft 42 and the mounting base 33.

Alternatively, as shown in fig. 13, the second link 442 is an L-shaped lever, thereby having a simple structure and being easily implemented.

In some embodiments of the present invention, as shown in fig. 14, a rotating shaft 433 is detachably mounted on the housing 43, the rotating shaft 433 can rotate around a predetermined axis relative to the housing 43, and the mounting seat 33 is detachably sleeved on the rotating shaft 433, so that when the rotating shaft 433 rotates around the predetermined axis, the mounting seat 33 can synchronously rotate along with the rotating shaft 433, and the rotating shaft 433 and the housing 43, and the mounting seat 33 and the rotating shaft 433 are detachably connected, thereby facilitating the disassembly and assembly.

Specifically, the preset axis is the self axis of the rotating shaft 433, and the self axis of the rotating shaft 433 is parallel to the axis of the output shaft 42.

In some embodiments of the present invention, two axial ends of the rotating shaft 433 are connected to the housing 43 through bearings, so that excessive friction caused by direct contact between the rotating shaft 433 and the housing 43 during rotation can be avoided, and the rotating shaft 433 can be conveniently rotated after the bearings are arranged.

In some embodiments of the present invention, as shown in fig. 14, the mounting seat 33 is splined to the rotating shaft 433, so that the structure is simple and the assembly is convenient.

Specifically, be equipped with on mount pad 33 with pivot 433 complex second mounting hole 331, be equipped with the internal spline on the second mounting hole 331, be equipped with the external spline on the periphery wall of pivot 433, the internal spline and the external spline cooperation.

It should be noted that, the present invention does not limit the specific structural form and number of the splines, for example, the splines may be standard rectangular splines, or may also be a protruding structure with a special shape, which may be selected according to actual needs or ease of machining.

In some embodiments of the present invention, as shown in fig. 14, the mounting seat 33 includes a base 332 and a cover 333, and the cover 333 is detachably connected to the base 332 and defines a second mounting hole 331 together with the base 332, thereby providing a simple structure and facilitating assembly.

Specifically, for example, referring to fig. 14, the cover 333 is disposed under the base 332, a portion of the lower surface of the base 332 is recessed upward to form an upper half of the second mounting hole 331, and a portion of the upper surface of the cover 333 is recessed downward to form a lower half of the second mounting hole 331, so that when the cover 333 is mounted on the base 332, the second mounting hole 331 is defined together.

In some embodiments of the present invention, as shown in fig. 14, the cover 333 is detachably connected to the base 332 by bolts, so that the structure is simple and easy to implement.

In some embodiments of the present invention, as shown in fig. 1 and 3, the fuselage assembly 1 includes an assembly body 11, a mounting frame 12, and a partition 13, the assembly body 11 is connected to the horn device 2, the mounting frame 12 is connected to the assembly body 11 and defines a mounting space 121, the partition 13 is located in the mounting space 121 and connected to the mounting frame 12, and the partition 13 divides the mounting space 121 into a first mounting space 1211 and a second mounting space 1212 that are spaced apart, so that the structure is simple, and the carrying capacity of the unmanned aerial vehicle 100 can be improved.

In practical applications, one of the first installation space 1211 and the second installation space 1212 may be used to install a battery, and the other may be used to install an object to be loaded, such as a camera for aerial photography or a liquid storage box containing a medicament for agricultural spraying, and the like, which may be selected according to practical requirements, but the invention is not limited thereto.

Alternatively, as shown in fig. 3, the mounting frame 12 is a ring-shaped structure, so that the mounting frame itself can define the mounting space 121, and the structure is simple and convenient to implement.

It should be noted that the specific shape of the ring shape of the mounting frame 12 is not limited in the present invention, for example, the mounting frame 12 may be a circular ring shape, a rectangular ring shape, or a ring shape with other shapes, and the like, and in addition, the mounting frame 12 may be an integral structure, or the mounting frame 12 is formed by sequentially combining a plurality of frame strips end to end.

In some embodiments of the present invention, as shown in fig. 1 and 4, the arm device 2 includes a first arm segment 21 and a second arm segment 22, the first arm segment 21 is connected to the fuselage assembly 1, the second arm segment 22 is pivotally connected to the first arm segment 21 between an extended position and a folded position, in the extended position, a length centerline of the second arm segment 22 is coincident with a length centerline of the first arm segment 21, thereby allowing the second arm segment 22 to be collinear with the first arm segment 21, when the length of the arm device 2 is at a maximum, in the folded position, the length centerline of the second arm segment 22 is not coincident with the length centerline of the first arm segment 21, thereby allowing the second arm segment 22 to form an included angle with the first arm segment 21, thereby reducing the overall length of the arm device 2, thereby enabling the arm device 2 to be foldable, and when the drone 100 is not in use, the second arm segment 22 can be rotated to the folded position, reduce unmanned aerial vehicle 100's occupation space, conveniently accomodate, when needs use unmanned aerial vehicle 100, alright rotate second arm section 22 to the expansion position, facilitate the use. In addition, the second arm section 22 is switched between the unfolding position and the folding position through rotation, the adjustment is convenient, and the second arm section 22 is always connected with the first arm section 21, so that compared with a split folding design, the structure is not easy to lose parts.

In some embodiments of the present invention, the first arm segment 21 and the second arm segment 22 are configured to be hollow and tubular, thereby having a simple structure and being easy to implement. In practical applications, the first arm section 21 and the second arm section 22 are not limited in material, for example, the first arm section 21 and the second arm section 22 may be aluminum alloy tubes wrapped by carbon fiber materials, or plastic tubes, or carbon tubes made of carbon fiber materials.

In some embodiments of the present invention, as shown in fig. 4, 5 and 6, a first connecting member 23 is disposed at an end of the first arm segment 21 close to the second arm segment 22, a second connecting member 24 is disposed at an end of the second arm segment 22 close to the first arm segment 21, the first connecting member 23 is pivotally connected to the second connecting member 24, and in the unfolded position, the first connecting member 23 abuts against the second connecting member and is fixedly connected thereto by a fastening member (e.g., a screw), so that the first arm segment 21 and the second arm segment 22 are connected more firmly and are not easily loosened in the unfolded position.

Alternatively, as shown in fig. 5 and 6, the first connecting member 23 and the second connecting member 24 are each configured in a cylindrical shape, the first connecting member 23 is fitted over the first arm section 21, the second connecting member 24 is fitted over the second arm section 22, and in the deployed position, the central axis of the first connecting member 23 is collinear with the central axis of the second connecting member 24, thereby achieving a simple structure.

In some embodiments of the present invention, as shown in fig. 4, 5 and 6, a portion of the end surface of the first link 23 facing the second link 24 is recessed toward a direction away from the second link 24 to form a fitting groove 231, a portion of the end surface of the second link 24 facing the first link 23 is raised toward a direction close to the first link 23 to form a fitting protrusion 241, and in the deployed position, the fitting protrusion 241 is fitted into the fitting groove 231, whereby the connection reliability of the first arm section 21 and the second arm section 22 in the deployed position can be further improved.

Alternatively, as shown in fig. 5 and 6, the fitting groove 231 extends in a ring shape in the circumferential direction of the first connector 23, and the fitting protrusion 241 extends in a ring shape in the circumferential direction of the second connector 24, thereby being simple in structure.

In some embodiments of the present invention, as shown in fig. 1 and 2, the drone 100 may include two horn devices 2, two power devices 3, and two driving devices 4, one power device 3 and one driving device 4 being respectively mounted at the outer end of each horn device 2. From this, through setting up two horn devices 2, can reduce unmanned aerial vehicle 100's volume to reduce unmanned aerial vehicle 100's occupation space. In addition, when unmanned aerial vehicle 100 flies, can rotate the same or different inclination through controlling two drive arrangement 4 drive power device 3 that are located two horn device 2 outer ends respectively to and adjust power device 3 in the rotational speed of motor 31, in order to realize that unmanned aerial vehicle 100 accomplishes actions such as advancing, reversing, turning, operate comparatively simply.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (16)

1. The utility model provides an unmanned aerial vehicle's power unit, unmanned aerial vehicle includes the horn device, the length both ends of horn device are inner and outer end respectively, its characterized in that, power unit includes:

the power device is suitable for being arranged at the outer end of the machine arm device and can rotate around a preset axis relative to the machine arm device, and the power device comprises a power motor and a propeller connected with the power motor; and

the driving device comprises a driving assembly, an output shaft and a first transmission assembly, the output shaft is movable relative to the arm device along the axial direction of the output shaft, the output shaft is respectively connected with the driving assembly and the first transmission assembly, the first transmission assembly is connected with the power device, the driving assembly is used for driving the output shaft to move, the first transmission assembly is used for transmitting the power of the output shaft to the power device so as to drive the power device to rotate around the preset axis, and the preset axis is parallel to or coincided with the axis of the output shaft.

2. The power mechanism of unmanned aerial vehicle of claim 1, wherein the driving device is adapted to be installed at an outer end of the horn device, and the driving device is located below the power device.

3. The unmanned aerial vehicle's power unit of claim 1, characterized in that, drive arrangement still includes the casing, the casing be suitable for with the horn device links to each other, the casing is inside to be injectd and to lay the chamber, drive assembly locates lay the intracavity, be equipped with on the casing with lay the hole of dodging of chamber intercommunication, the axial one end of output shaft is located lay the intracavity and with drive assembly links to each other, the axial other end of output shaft passes the hole of dodging stretch out the casing outside and with first drive assembly links to each other.

4. The power mechanism of the unmanned aerial vehicle as claimed in claim 1 or 3, wherein the driving assembly comprises a steering engine and a second transmission assembly, the second transmission assembly is a gear transmission assembly, a primary gear of the gear transmission assembly is connected with a motor shaft of the steering engine, and a final gear of the gear transmission assembly is connected with the output shaft.

5. The power mechanism of an unmanned aerial vehicle according to claim 4, wherein a first mounting hole extending along a central axis of the final gear is formed at a hub of the final gear, an internal thread is formed on an inner peripheral wall of the first mounting hole, an external thread is formed on an outer peripheral wall of the output shaft, and the internal thread is matched with the external thread.

6. The unmanned aerial vehicle's power unit of claim 1, characterized in that drive arrangement still includes the casing, the casing is suitable for linking to each other with the horn device, power device still includes the mount pad, power motor installs in the mount pad, the mount pad can dismantle with the casing and link to each other.

7. The unmanned aerial vehicle's of claim 6 power unit, characterized in that the first transmission subassembly is the connecting rod transmission subassembly, the connecting rod transmission subassembly includes first connecting rod, second connecting rod and third connecting rod, the second connecting rod rotationally installs on the casing, first connecting rod is located between the output shaft and the second connecting rod, first connecting rod respectively with the output shaft with the second connecting rod pivot links to each other, the third connecting rod is located between the second connecting rod and the mount pad, the third connecting rod respectively with the second connecting rod with the mount pad pivot links to each other.

8. The unmanned aerial vehicle power mechanism of claim 7, wherein the second link comprises a first link section and a second link section that are connected, a length centerline of the first link section is not parallel to a length centerline of the second link section, the second link is pivotally connected to the housing at a connection of the first link section and the second link section, the first link section is pivotally connected to the first link, and the second link section is pivotally connected to the third link.

9. The unmanned aerial vehicle's power unit of claim 6, characterized in that, demountable installation has the pivot on the casing, the pivot can wind around predetermineeing the axis relative to the casing and rotate, mount pad detachably cover is established in the pivot.

10. The unmanned aerial vehicle's power unit of claim 9, characterized in that, the mount pad passes through splined connection with the pivot.

11. The unmanned aerial vehicle's power unit of claim 9, characterized in that, be equipped with on the mount pad with the pivot complex second mounting hole, the mount pad includes base and apron, the apron can dismantle with the base and link to each other and with the base has limited the second mounting hole jointly.

12. An unmanned aerial vehicle, comprising:

a fuselage assembly;

the two ends of the length of the horn device are respectively an inner end and an outer end, and the inner end of the horn device is connected with the machine body assembly; and

a power mechanism according to any of claims 1 to 11.

13. The drone of claim 12, wherein the fuselage assembly includes an assembly body connected to the horn device, a mounting frame connected to the total cost body and defining a mounting space, and a partition located within the mounting space and connected to the mounting frame, the partition dividing the mounting space into first and second spaced apart mounting spaces.

14. The drone of claim 12, wherein the horn device includes a first arm segment and a second arm segment, the first arm segment coupled to the fuselage assembly, the second arm segment rotationally coupled to the first arm segment between an extended position in which a length centerline of the second arm segment coincides with a length centerline of the first arm segment, and a folded position in which a length centerline of the second arm segment does not coincide with a length centerline of the first arm segment.

15. An unmanned aerial vehicle as claimed in claim 14, wherein an end of the first arm section adjacent the second arm section is provided with a first connector, an end of the second arm section adjacent the first arm section is provided with a second connector, the first connector is pivotally connected to the second connector, and in the deployed position, the first connector is in abutting connection with the second connector and is fixedly connected thereto by a fastener.

16. An unmanned aerial vehicle as claimed in any of claims 12-15, wherein the unmanned aerial vehicle comprises two of the horn devices, two of the power devices and two of the drive devices, one of the power devices and one of the drive devices being mounted to an outer end of each of the horn devices.

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