CN219134494U - Unmanned aerial vehicle's power device, driving system and unmanned aerial vehicle - Google Patents

Abstract

The utility model discloses a power device, a power system and an unmanned aerial vehicle of the unmanned aerial vehicle, wherein the power device comprises a blade assembly and a driving motor for driving the blade assembly to rotate; the driving motor comprises a stator assembly and a rotor assembly coaxially arranged with the stator assembly, wherein the rotor assembly comprises a motor cover and a motor shell arranged on the motor cover, the motor cover is rotationally connected with the stator assembly through a bearing seat, and the blade assembly is arranged on the cover surface of the motor cover; the driving motor is provided with a clearance channel which completely penetrates through the driving motor, and the clearance channel extends along the direction parallel to the axis of the driving motor. The power device has the advantages of simple structure, light weight, small occupied space and easy maintenance of balance of the unmanned aerial vehicle; meanwhile, the installation of other parts is very convenient.

Description

Unmanned aerial vehicle's power device, driving system and unmanned aerial vehicle

Technical Field

The utility model relates to the technical field of unmanned aerial vehicles, in particular to a power device and a power system of an unmanned aerial vehicle and the unmanned aerial vehicle.

Background

Unmanned aerial vehicle is simply called as "unmanned aerial vehicle", is a new concept aircraft in rapid development, and no cockpit is arranged on the aircraft, but equipment such as an autopilot, a program control device, an information acquisition device and the like are installed. Personnel on the ground, ships or on a mother machine remote control station track, position, remote control, telemetere and digital transmission through radar and other equipment. The unmanned aerial vehicle has the advantages of flexibility, quick response and low operation requirement, and is widely applied to the main fields of military, scientific research, civil use and the like.

In the existing unmanned aerial vehicle, the power system is very complex in structure and large in occupied space, so that the unmanned aerial vehicle is not easy to keep balanced in the flying process, the flexibility is lower, and other parts and components can be very troublesome to install.

Disclosure of Invention

The utility model aims to overcome the problems and provide the power device of the unmanned aerial vehicle, which has the advantages of simple structure, light weight and small occupied space, and is very easy for the unmanned aerial vehicle to keep balance; meanwhile, the installation of other parts is very convenient.

A second object of the present utility model is to provide a power system of an unmanned aerial vehicle comprising the power device.

A third object of the present utility model is to provide a unmanned aerial vehicle comprising the above-described power system.

The aim of the utility model is achieved by the following technical scheme:

a power device of an unmanned aerial vehicle, comprising a paddle assembly and a driving motor for driving the paddle assembly to rotate; wherein, the liquid crystal display device comprises a liquid crystal display device,

the driving motor comprises a stator assembly and a rotor assembly coaxially arranged with the stator assembly, wherein the rotor assembly comprises a motor cover and a motor shell arranged on the motor cover, the motor cover is rotationally connected with the stator assembly through a bearing seat, and the blade assembly is arranged on the cover surface of the motor cover;

the driving motor is provided with a clearance channel which completely penetrates through the driving motor, and the clearance channel extends along the direction parallel to the axis of the driving motor.

The working principle of the power device of the unmanned aerial vehicle is as follows:

when the unmanned aerial vehicle is in work, after the driving motor is electrified, the rotor assembly rotates around the stator assembly, namely the motor cover and the motor shell rotate to drive the blade assembly to rotate, so that flying power can be provided for the unmanned aerial vehicle; through setting up motor cover and motor casing for rotor subassembly structure becomes compacter, and the paddle subassembly is directly installed on motor cover, makes driving motor and paddle subassembly occupation space littleer, and the structure is simpler; through setting up the clearance passageway, at the in-process of installing unmanned aerial vehicle, when the opposite spare and accessory part of installation driving motor bottom, stretch into instrument (like the screwdriver) from the clearance passageway to stretch out from the driving motor bottom, can install the opposite spare and accessory part of driving motor bottom, easy operation, it is convenient.

Preferably, the stator assembly is provided with a plurality of clearance areas penetrating along the axial direction of the stator assembly; at least one first clearance hole is formed in the motor cover; when one of the first clearance holes on the motor cover moves to correspond to one of the clearance areas, the first clearance holes are axially communicated with the clearance areas to form the clearance channel. In the structure of the utility model, by arranging the first clearance holes and the clearance areas, when the rotor assembly rotates, the motor cover rotates along with the rotation of the motor cover, and when one of the first clearance holes moves to correspond to one of the clearance areas, the first clearance holes and the clearance areas are axially communicated to form a clearance channel, so that the first clearance holes can extend in from the first clearance holes and extend out from the bottoms of the clearance areas, and parts opposite to the bottoms of the driving motors can be installed.

Preferably, the blade assembly comprises a blade clamp arranged on the cover surface of the motor cover and blades arranged at two ends of the blade clamp; the cover surface of the motor cover is fixedly connected with the bottom of the paddle clamp through screws. Through setting up above-mentioned structure, the oar presss from both sides can fixed blade, and the installation of the blade of being convenient for is through screw fixed connection, is convenient for press from both sides the oar and installs on the capping of electrode lid.

Preferably, the paddle clamp is provided with a through hole, and the axis of the through hole coincides with the axis of the stator assembly. Through setting up the through-hole, on the one hand can reduce the weight of oar clamp, improve flying performance, on the other hand can pass the through-hole and arrange other parts, satisfies the space installation other parts beyond the driving motor.

Preferably, a mounting rod is provided on the stator assembly, and the mounting rod passes through the through hole and extends to the outside. By providing a mounting bar, other components, such as an antenna, a sensor, etc., may be mounted at the end of the mounting bar, which is not in contact with the blade clamp.

Preferably, both ends of the paddle clamp are provided with paddle locking holes for installing blades, and the tops of the paddle locking holes are provided with boss structures. Through setting up lock oar hole and boss structure, be convenient for carry out location and installation to the blade.

Preferably, the cover surface of the motor cover is provided with an annular bulge, and the through hole is sleeved outside the annular bulge. Through setting up annular arch, can realize the location to the oar clamp, be convenient for to the installation of oar clamp.

Preferably, a central hole is formed in the middle of the motor cover, and the stator assembly is connected with the central hole through the bearing seat; the bottom of the paddle clamp is provided with an annular boss, and the annular boss is sleeved in the center hole. In the structure, the central hole is arranged, so that the bearing seat can be conveniently installed and better connected with the stator assembly; the annular boss is arranged, so that the positioning of the paddle clamp can be realized, and the installation of the paddle clamp is facilitated.

Preferably, the paddle clamp comprises an upper paddle clamp and a lower paddle clamp, the blade is arranged between the upper paddle clamp and the lower paddle clamp, the mounting hole is arranged on the lower paddle clamp, and both ends of the upper paddle clamp and the lower paddle clamp are respectively provided with the paddle locking hole and the boss structure; through holes are formed in the middle of the upper paddle clamp and the middle of the lower paddle clamp, and the diameters of the through holes of the upper paddle clamp and the through holes of the lower paddle clamp can be different, but are coaxially arranged; the size of the through hole of the lower paddle clamp is matched with the outer diameter of the annular bulge, and the through hole and the outer diameter of the annular bulge are mutually sleeved; the upper oar clamp both ends still are equipped with dodges the hole, dodge the hole and set up with two mounting holes coaxial in the lower oar clamp. In the structure, the upper paddle clamp and the lower paddle clamp are arranged to clamp the blades stably, so that the blades can be positioned and installed conveniently; the upper oar clamp is provided with the avoidance hole, so that a tool can conveniently extend into the mounting hole of the lower oar clamp from the avoidance hole, and the lower oar clamp is mounted and dismounted.

Preferably, the side surface of the motor cover is provided with at least one heat dissipation hole. Through setting up the louvre in the side, be favorable to dispelling the heat to driving motor inside, guarantee driving motor's steady operation.

The power system of the unmanned aerial vehicle comprises a horn and a power device arranged at the tail end of the horn, wherein the power device comprises an upper power mechanism positioned at the upper end of the horn and a lower power mechanism positioned at the lower end of the horn, and the upper power mechanism and the lower power mechanism are oppositely arranged; wherein, the liquid crystal display device comprises a liquid crystal display device,

the lower power mechanism is the power device; the specific structure of the upper power mechanism is the same as that of the lower power mechanism except that the motor cover in the lower power mechanism is provided with the first clearance hole;

the clearance channel penetrates through a driving motor in the lower power mechanism and extends to the inside of the horn.

The working principle of the power system of the unmanned aerial vehicle is as follows:

when the unmanned aerial vehicle power system works, the driving motor in the upper power mechanism and the driving motor in the lower power mechanism work simultaneously to drive the corresponding blade assemblies to rotate, so that the power output of the unmanned aerial vehicle is realized, and the power system structure of the unmanned aerial vehicle is very simple; because the driving motor in the lower power mechanism is provided with the clearance channel, when the power system of the unmanned aerial vehicle is installed, the driving motor in the lower power mechanism is firstly installed on the horn, then a tool (such as a screwdriver) stretches into the horn from the clearance channel through the clearance channel in the driving motor in the lower power mechanism, the driving motor in the upper power mechanism is installed on the horn, and finally the upper blade assembly and the lower blade assembly are installed on the driving motor.

Preferably, the clearance channel further comprises second clearance holes arranged at the lower end of the horn, the number of the second clearance holes is the same as that of the clearance areas in the lower power mechanism, and the clearance areas in the lower power mechanism are in one-to-one correspondence with the second clearance holes. By arranging the second clearance hole, the tool can be extended into the inner part of the arm.

Preferably, the arm comprises an arm body and a cylinder arranged at the tail end of the arm body; the upper end and the lower end of the cylinder body are respectively provided with an upper baffle plate and a lower baffle plate, and the two stator assemblies are respectively and fixedly connected to the upper baffle plate and the lower baffle plate through screws; wherein the second clearance hole is arranged on the lower partition plate; the positions of the screws connected with the upper partition plate correspond to the positions of the second clearance holes. Through setting up baffle and lower baffle, made things convenient for the installation to two driving motor, and the structure is very compact, and occupation space is little, when the driving motor above the needs are installed, stretches into the screw of last baffle with the instrument from the clearance passageway, can fix the stator module above through the screw, easy operation is convenient.

Preferably, a third clearance hole is formed in the upper partition plate, and the position of the third clearance hole corresponds to the position of a screw connected with the lower partition plate. Through setting up the third and keep away the sky hole, when installing driving motor below, stretch into the screw of baffle down with the instrument from the third and keep away the sky hole, can fix stator module below through the screw, easy operation is convenient.

Preferably, the end of the mounting rod is provided with an antenna. In the prior art, in order to realize radio communication of an unmanned aerial vehicle, an antenna is usually installed on a body of the unmanned aerial vehicle, and as various electronic devices are integrated on the body of the unmanned aerial vehicle, the electromagnetic environment is very complex, and the antenna is easily interfered to influence the positioning accuracy; in the structure, through setting up the antenna on stator module, can guarantee the accurate transmission of antenna and receipt, the through-hole can prevent that installation pole and oar from pressing from both sides and taking place to contact, has guaranteed the smooth motion of oar clamp.

An unmanned aerial vehicle comprises the power system of the unmanned aerial vehicle.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the power device of the unmanned aerial vehicle, the blade assembly is driven to move by the driving motor, so that flying power can be provided for the unmanned aerial vehicle; through setting up motor cover and motor casing for rotor subassembly structure becomes compacter, and the paddle subassembly is direct to be installed on motor cover, makes driving motor and the shared space of paddle subassembly littleer, and the structure is simpler, and weight is lighter.

2. According to the power device of the unmanned aerial vehicle, through the arrangement of the clearance channel, in the process of installing the unmanned aerial vehicle, when parts opposite to the bottom of the driving motor are installed, tools (such as screw drivers) extend in from the clearance channel and extend out from the bottom of the driving motor, and the parts opposite to the bottom of the driving motor can be installed, so that the operation is simple and convenient.

3. According to the power system of the unmanned aerial vehicle, the upper power mechanism and the lower power mechanism are arranged, and the driving motor in the upper power mechanism and the driving motor in the lower power mechanism work simultaneously to drive the corresponding blade assemblies to rotate, so that the power output of the unmanned aerial vehicle can be improved.

4. According to the power system of the unmanned aerial vehicle, as the driving motor in the lower power mechanism and the horn are provided with the clearance channel, when the power system of the unmanned aerial vehicle is installed, the driving motor in the lower power mechanism is firstly installed on the horn, then a tool (such as a screwdriver) stretches into the horn from the clearance channel through the clearance channel in the driving motor in the lower power mechanism, the driving motor in the upper power mechanism is installed on the horn, and finally the upper blade component and the lower blade component are installed on the driving motor; by arranging the clearance channel, the installation of the driving motor in the upper power mechanism can be realized while the structure is simple and compact, and the installation is very convenient; due to the arrangement of the clearance channel, the driving motor is not required to be fixed by installing an additional mounting plate outside the driving motor, and the structure is simple and light, and meanwhile, other parts are convenient to install.

5. According to the power system of the unmanned aerial vehicle, disclosed by the utility model, except that the first clearance holes are formed in the motor cover in the lower power mechanism, the specific structure of the upper power mechanism is the same as that of the lower power mechanism, so that the first clearance holes are not formed in the motor cover in the upper power mechanism, the tightness of the motor cover in the upper power mechanism can be ensured, and rainwater is effectively prevented from entering the driving motor under the rainy day condition.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of a power device of an unmanned aerial vehicle according to the present utility model.

Fig. 2 is a partial enlarged view at a in fig. 1.

Fig. 3 to 4 are schematic structural views of a driving motor according to the present utility model, wherein fig. 3 is a perspective view and fig. 4 is a bottom view.

Fig. 5 is a schematic view of the internal structure of the driving motor according to the present utility model.

Fig. 6 is a schematic perspective view of a motor cover according to the present utility model.

Fig. 7 is a schematic view of a portion of the structure of a blade assembly in accordance with the present utility model.

Fig. 8 is a schematic view of a part of a second embodiment of a power unit of an unmanned aerial vehicle according to the present utility model.

Fig. 9-12 are schematic structural views of a power system of a unmanned aerial vehicle according to the present utility model, wherein fig. 9 is a front view, fig. 10 is a top view, and fig. 11-12 are perspective views of different viewing angles.

Fig. 13 to 15 are schematic views illustrating a partial structure of a horn and mounting of two driving motors according to the present utility model, wherein fig. 13 is a front view, and fig. 14 to 15 are perspective views of different viewing angles.

Fig. 16 is a sectional view taken along the B-B direction in fig. 13.

Fig. 17-18 are perspective views of the horn from different viewing angles in the present utility model.

Fig. 19 is a schematic perspective view of an upper power mechanism in the present utility model.

Fig. 20 is a partial enlarged view at C in fig. 19.

Detailed Description

In order that those skilled in the art will well understand the technical solutions of the present utility model, the following describes the present utility model further with reference to examples and drawings, but the embodiments of the present utility model are not limited thereto.

Example 1

Referring to fig. 1-5, the present embodiment discloses a power device of an unmanned aerial vehicle, including a paddle assembly 4 and a driving motor 5 for driving the paddle assembly 4 to rotate, wherein, the driving motor 5 includes a stator assembly 51 and a rotor assembly 52 coaxially disposed with the stator assembly 51, wherein, the rotor assembly 52 includes a motor cover 521 and a motor housing 522 disposed on the motor cover 521, the motor housing 522 is coaxially disposed with the motor cover 521, the motor cover 521 is rotatably connected with the stator assembly 51 through a bearing seat 53, and the paddle assembly 4 is mounted on the cover surface of the motor cover 521.

Referring to fig. 1-5, the driving motor 5 is provided with a clearance channel 6 which completely penetrates through the driving motor 5, and the clearance channel 6 extends along the direction parallel to the axis of the driving motor 5; i.e. the direction in which the clearance channel 6 runs through is parallel to the axial direction of the drive motor 5.

Referring to fig. 1-6, the stator assembly 51 is provided with a plurality of clearance areas 61 penetrating along the axial direction thereof, that is, the extending direction of the clearance areas 61 is parallel to the axial direction of the stator assembly 51; at least one first clearance hole 63 is formed in the motor cover 521; when one of the first clearance holes 63 on the motor cover 521 moves to correspond to one of the clearance areas 61, the first clearance hole 63 and the clearance area 61 are axially communicated to form the clearance channel 6. In the structure of the utility model, by arranging the first clearance holes 63 and the clearance areas 61, when the rotor assembly 52 rotates, the motor cover 521 rotates along with the rotation, and when one of the first clearance holes 63 moves to correspond to one of the clearance areas 61, the first clearance holes 63 and the clearance areas 61 are axially communicated to form the clearance channel 6, so that the first clearance holes 63 can extend into the clearance channel and extend out of the bottom of the clearance areas 61, and parts opposite to the bottom of the driving motor 5 can be installed, thus the operation is simple and convenient.

Referring to fig. 1-6, the number of the empty areas 61 is four, the four empty areas 61 are uniformly arrayed along the circumferential direction, and the center of the array coincides with the axis of the stator assembly 51. Correspondingly, the number of the first clearance holes 63 is four. When the four first clearance holes 63 and the four clearance areas 61 are respectively and axially communicated, four clearance passages 6 may be formed.

Referring to fig. 1 to 6, the side of the motor cover 521 is provided with at least one heat dissipation hole 5211. Through setting up louvre 5211 in the side, be favorable to dispelling the heat to driving motor 5 inside, guarantee driving motor 5's steady operation.

The number of the heat dissipation holes 5211 in this embodiment is 12, and the heat dissipation holes are uniformly distributed along the circumferential direction.

Referring to fig. 1-7, the blade assembly 4 includes a blade clip 41 provided on a cover surface of the motor cover 521, and blades 42 provided at both ends of the blade clip 41; wherein, the cover surface of the motor cover 521 is fixedly connected with the bottom of the paddle clamp 41 through a screw; specifically, at least two screw holes 5212 are provided on the cover surface of the motor cover 521, and a mounting hole 4121 is provided at a position corresponding to the screw hole 5212 at the lower end of the paddle clip 41, and the mounting hole 4121 is connected with the screw hole 5212 through the screw. Through setting up above-mentioned structure, the oar presss from both sides 41 can fix blade 42, and the installation of blade 42 of being convenient for sets up screw hole 5212 and mounting hole 4121, is convenient for install oar presss from both sides 41 on the capping of electrode lid.

Referring to fig. 1-2 and 7, the paddle clamp 41 is provided with a through hole 43, and the axis of the through hole 43 coincides with the axis of the stator assembly 51. By providing the through hole 43, on the one hand, the weight of the paddle clamp 41 can be reduced, the flying performance can be improved, and on the other hand, other components can be arranged through the through hole 43, so that the installation of other components in a space except the driving motor 5 is satisfied.

Referring to fig. 2 and 12, the stator assembly 51 is provided with a mounting rod 9, and the mounting rod 9 extends to the outside through the through hole 43. By providing the mounting bar 9, other components, such as an antenna 8, a sensor, etc., can be mounted at the end of the mounting bar 9, which mounting bar 9 is not in contact with the paddle clamp 41.

Referring to fig. 1-2 and 7, two ends of the blade clamp 41 are provided with blade locking holes 4112 for mounting blades 42, and a boss structure 4111 is arranged at the top of each blade locking hole 4112. By providing the blade locking hole 4112 and the boss structure 4111, positioning and mounting of the blade 42 is facilitated.

Referring to fig. 1-7, the cover surface of the motor cover 521 is provided with an annular protrusion 5213, and the through hole 43 is sleeved outside the annular protrusion 5213. By providing the annular projection 5213, positioning of the blade clamp 41 can be achieved, facilitating installation of the blade clamp 41.

Referring to fig. 1-7, the blade clamp 41 includes an upper blade clamp 411 and a lower blade clamp 412, the blade 42 is disposed between the upper blade clamp 411 and the lower blade clamp 412, the mounting hole 4121 is disposed on the lower blade clamp 412, and both ends of the upper blade clamp 411 and the lower blade clamp 412 are provided with the lock hole 4112 and the boss structure 4111; the middle parts of the upper paddle clamp 411 and the lower paddle clamp 412 are respectively provided with the through holes 43, and the diameters of the through holes 43 of the upper paddle clamp 411 and the through holes 43 of the lower paddle clamp 412 can be different, but are coaxially arranged; the size of the through hole 43 of the lower paddle clamp 412 is matched with the outer diameter size of the annular protrusion 5213, and the through hole 43 and the annular protrusion 5213 are mutually sleeved; the two ends of the upper blade holder 411 are further provided with avoiding holes 4113, and the avoiding holes 4113 are coaxially arranged with the two mounting holes 4121 in the lower blade holder 412. In the structure, the upper paddle clamp 411 and the lower paddle clamp 412 are arranged to clamp the blade 42 stably, so that the positioning and the installation of the blade 42 are facilitated; the upper blade holder 411 is provided with a avoiding hole 4113, so that a tool can conveniently extend from the avoiding hole 4113 to the mounting hole 4121 of the lower blade holder 412 to mount and dismount the lower blade holder 412.

Referring to fig. 1 to 6, a central hole 5214 is provided in the middle of the motor cover 521, and the fixed shaft 511 of the stator assembly 51 is connected to the central hole 5214 through the bearing housing 53; the annular protrusion 5213 is located at the top edge of the central aperture 5214.

The stator assembly 51 includes a stator body.

Referring to fig. 1 to 7, the working principle of the power device of the unmanned aerial vehicle is as follows:

when the unmanned aerial vehicle is in operation, after the driving motor 5 is electrified, the rotor assembly 52 rotates around the stator assembly 51, namely the motor cover 521 and the motor casing 522 rotate to drive the blade assembly 4 to rotate, so that flying power can be provided for the unmanned aerial vehicle; through the motor cover 521 and the motor casing 522, the rotor assembly 52 is more compact in structure, and the blade assembly 4 is directly arranged on the motor cover 521, so that the space occupied by the driving motor 5 and the blade assembly 4 is smaller, and the structure is simpler; through setting up the clearance passageway 6, at the in-process of installing unmanned aerial vehicle, when installing the opposite spare and accessory part of driving motor 5 bottom, stretch into instrument (like the screwdriver) from clearance passageway 6 to stretch out from driving motor 5 bottom, can install the opposite spare and accessory part of driving motor 5 bottom, easy operation, it is convenient.

Example 2

Referring to fig. 8, the other structure in this embodiment is the same as that of embodiment 1, except that the motor cover 521 is not provided with an annular protrusion 5213, the bottom of the paddle holder is provided with an annular boss 4122, specifically, the lower end edge of the through hole 43 of the lower paddle holder 412 is provided with an annular boss 4122, the annular boss 4122 is sleeved inside the central hole 5214, and the outer diameter dimension of the annular boss 4122 is matched with the diameter dimension of the central hole 5214. In the above structure, the central hole 5214 can facilitate the installation of the bearing seat 53 and better connect with the stator assembly 51; positioning of the blade clamp 41 can also be achieved by the annular boss 4122, and installation of the blade clamp 41 is facilitated.

Example 3

Referring to fig. 9-20, the embodiment discloses a power system of an unmanned aerial vehicle, which comprises a horn 1 and a power device arranged at the tail end of the horn 1, wherein the power device is a coaxial double-paddle power device, the power device comprises an upper power mechanism 2 positioned at the upper end of the horn 1 and a lower power mechanism 3 positioned at the lower end of the horn 1, and the upper power mechanism 2 and the lower power mechanism 3 are oppositely arranged.

Referring to fig. 9 to 20, the lower power mechanism 3 is the power device described in embodiment 1 or embodiment 2; the specific structure of the upper power mechanism 2 is the same as that of the lower power mechanism 3 except that the motor cover 521 in the lower power mechanism 3 is provided with the first clearance hole 63; that is, the upper power mechanism 2 also comprises a blade assembly 4 and a driving motor 5 for driving the blade assembly 4 to rotate; the difference is that the motor cover 521 in the upper power mechanism 2 is not provided with the first clearance hole 63, so that the tightness of the motor cover 521 in the upper power mechanism 2 can be ensured, and rainwater can be effectively prevented from entering the driving motor 5 in rainy days.

Referring to fig. 9-20, the two drive motors 5 are coaxially arranged and oppositely oriented.

Referring to fig. 9 to 20, the clearance passage 6 penetrates the driving motor 5 in the lower power mechanism 3 and extends to the inside of the horn 1.

Referring to fig. 9-20, the clearance channel 6 further includes second clearance holes 62 disposed at the lower end of the horn 1, the number of the second clearance holes 62 is the same as the number of the clearance areas 61 in the lower power mechanism 3, and the number of the clearance areas 61 in the lower power mechanism 3 is four, and the number of the second clearance holes 62 is one-to-one corresponding to the number of the clearance areas 61 in the lower power mechanism 3. By providing the second clearance hole 62, the tool can be extended into the interior of the horn 1. In the structure of the utility model, by arranging the first clearance hole 63, the clearance area 61 and the second clearance hole 62, when the lower rotor assembly 52 rotates, the motor cover 521 rotates along with the rotation, and when one of the first clearance holes 63 moves to correspond to one of the clearance areas 61, the first clearance hole 63, the clearance area 61 and the second clearance hole 62 are axially communicated to form the clearance channel 6, so that tools can extend into the horn 1 from the clearance channel 6, the internal fixation of the upper driving motor 5 can be realized, no parts are needed to be externally arranged outside the driving motor 5 to fix the driving motor 5, the structure is more compact, the occupied space is small, and the driving motor 5 is convenient to install.

Referring to fig. 9-20, the arm 1 includes an arm body 11 and a cylinder 12 disposed at the end of the arm body 11, the arm body 11 being integrally disposed with the cylinder 12; wherein, the upper and lower ends of the cylinder 12 are respectively provided with an upper baffle 13 and a lower baffle 14, and the two stator assemblies 51 are respectively and fixedly connected to the upper baffle 13 and the lower baffle 14 through screws 7; wherein the second clearance hole 62 is provided on the lower partition 14; the position of the screw 7 connected to the upper partition 13 corresponds to the position of the second clearance hole 62. Through setting up baffle 13 and baffle 14 down, made things convenient for the installation to two driving motor 5, and the structure is very compact, and occupation space is little, when driving motor 5 above needs to be installed, stretches into the screw 7 of last baffle 13 with the instrument from keep away empty passageway 6, can fix the stator module 51 above through screw 7, easy operation is convenient.

Referring to fig. 9-20, the upper partition 13 is provided with four third clearance holes 131, and the positions of the third clearance holes 131 correspond to the positions of the screws 7 connected to the lower partition 14. Through setting up third clearance hole 131, when installing driving motor 5 below, stretch into the screw 7 of lower baffle 14 with the instrument from third clearance hole 131, can fix stator module 51 below through screw 7, easy operation is convenient.

Referring to fig. 17-18, the second clearance hole 62 and the third clearance hole 131 are disposed offset from each other in the axial direction. The aim is to more easily install the drive motor 5.

Referring to fig. 19-20, the mounting bar 9 is provided with an antenna 8 at its end. In the prior art, in order to realize radio communication of an unmanned aerial vehicle, an antenna 8 is usually installed on a fuselage of the unmanned aerial vehicle, and as various electronic devices are integrated on the fuselage of the unmanned aerial vehicle, the electromagnetic environment is very complex, and the antenna 8 is easily interfered to influence the positioning accuracy; in the above structure, by arranging the antenna 8 on the stator assembly 51, the antenna 8 can be ensured to be precisely transmitted and received, the through hole 43 can prevent the mounting rod 9 from contacting the paddle clamp 41, and smooth movement of the paddle clamp 41 is ensured.

Referring to fig. 9 to 20, the working principle of the power system of the unmanned aerial vehicle is as follows:

when the unmanned aerial vehicle power system works, the driving motor 5 in the upper power mechanism 2 and the driving motor 5 in the lower power mechanism 3 work simultaneously to drive the corresponding blade assemblies 4 to rotate, so that the power output of the unmanned aerial vehicle is realized, and the power system structure of the unmanned aerial vehicle is very simple; because the driving motor 5 in the lower power mechanism 3 is provided with the clearance channel 6, when the power system of the unmanned aerial vehicle is installed, the driving motor 5 in the lower power mechanism 3 is firstly installed on the horn 1, then a tool (such as a screwdriver) stretches into the horn 1 from the clearance channel 6 through the clearance channel 6 in the driving motor 5 in the lower power mechanism 3, the driving motor 5 in the upper power mechanism 2 is installed on the horn 1, and finally the upper blade component 4 and the lower blade component 4 are installed on the driving motor 5.

In the prior art, usually, additional connecting parts such as mounting plates are arranged outside the driving motor 5 to install the driving motor on the horn 1, but in the embodiment, through the arrangement of the clearance channel 6, the driving motor 5 is not required to be fixed by installing additional mounting plates outside the driving motor 5, the tool can be ensured to have a movable space through the clearance channel 6, the installation of the two driving motors 5 can be directly realized, and the driving motor 5 is convenient to install while the structure is simple and light.

Example 4

The embodiment discloses an unmanned aerial vehicle, including unmanned aerial vehicle fuselage, set up a plurality of unmanned aerial vehicle's as in embodiment 3 on the unmanned aerial vehicle fuselage driving system.

Specifically, the number of the power systems of the unmanned aerial vehicle can be set to be 4, and stable operation of the unmanned aerial vehicle is guaranteed.

The foregoing is illustrative of the present utility model, and is not to be construed as limiting thereof, but rather as various changes, modifications, substitutions, combinations, and simplifications which may be made without departing from the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims (10)

1. A power device of an unmanned aerial vehicle, comprising a paddle assembly and a driving motor for driving the paddle assembly to rotate; it is characterized in that the method comprises the steps of,

the driving motor comprises a stator assembly and a rotor assembly coaxially arranged with the stator assembly, wherein the rotor assembly comprises a motor cover and a motor shell arranged on the motor cover, the motor cover is rotationally connected with the stator assembly through a bearing seat, and the blade assembly is arranged on the cover surface of the motor cover;

the driving motor is provided with a clearance channel which completely penetrates through the driving motor, and the clearance channel extends along the direction parallel to the axis of the driving motor.

2. The unmanned aerial vehicle power device of claim 1, wherein the stator assembly has a plurality of clearance areas extending therethrough along an axial direction thereof; at least one first clearance hole is formed in the motor cover; when one of the first clearance holes on the motor cover moves to correspond to one of the clearance areas, the first clearance holes are axially communicated with the clearance areas to form the clearance channel.

3. The unmanned aerial vehicle power device of claim 2, wherein the blade assembly comprises a blade clip disposed on the cover face of the motor cover and blades disposed at both ends of the blade clip; the cover surface of the motor cover is fixedly connected with the bottom of the paddle clamp through screws.

4. A power plant for an unmanned aerial vehicle according to claim 3, wherein the paddle clip is provided with a through hole, the axis of which coincides with the axis of the stator assembly; the stator assembly is provided with a mounting rod, and the mounting rod penetrates through the through hole and extends to the outside.

5. A power plant of an unmanned aerial vehicle according to claim 3, wherein the two ends of the paddle clip are provided with paddle locking holes for mounting the blades, and the tops of the paddle locking holes are provided with boss structures.

6. The unmanned aerial vehicle's power device according to claim 4, wherein the motor cover is provided with an annular protrusion on its cover surface, and the through hole is sleeved outside the annular protrusion.

7. The power device of an unmanned aerial vehicle according to claim 4, wherein the middle part of the motor cover is provided with a central hole; the bottom of the paddle clamp is provided with an annular boss, and the annular boss is sleeved in the center hole.

8. The unmanned aerial vehicle power device of claim 2, wherein the motor cover has at least one heat dissipating aperture on a side thereof.

9. The power system of the unmanned aerial vehicle comprises a horn and a power device arranged at the tail end of the horn, wherein the power device comprises an upper power mechanism positioned at the upper end of the horn and a lower power mechanism positioned at the lower end of the horn, and the upper power mechanism and the lower power mechanism are oppositely arranged; it is characterized in that the method comprises the steps of,

the lower power mechanism is the power device of any one of claims 2-8; the specific structure of the upper power mechanism is the same as that of the lower power mechanism except that the motor cover in the lower power mechanism is provided with the first clearance hole;

the clearance channel penetrates through a driving motor in the lower power mechanism and extends to the inside of the horn.

10. A drone comprising the power system of claim 9.

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