WO2016141743A1

WO2016141743A1 - Electric motor mounting base, reinforcement and multi-rotor unmanned aircraft

Info

Publication number: WO2016141743A1
Application number: PCT/CN2015/097405
Authority: WO
Inventors: 杨华东; 吴奇才; 赵江
Original assignee: 杨华东
Priority date: 2015-03-12
Filing date: 2015-12-15
Publication date: 2016-09-15
Also published as: CN104709464A; CN104709464B

Abstract

Disclosed are an electric motor mounting base, a reinforcement and a multi-rotor unmanned aircraft. The electric motor mounting base comprises a vertically arranged end plate, and a first and a second fixed plate extending in a horizontal direction from the same side of the end plate, wherein a holding space is vertically formed between the first and second fixed plates. The fastening of the electric motor mounting base of the present invention with a first mounting base is achieved by means of the two vertically arranged fixed plates, and thus the electric motor mounting base is more stable, so that the electric motor mounted on the electric motor mounting base will not easily shake. Moreover, the fixed plates crossing a through-hole are respectively fixed to a first main body and a second main body, and at the same time, the first fixed plate, the second fixed plate and the end plate package the main bodies so as to ensure that the main bodies are firmer and will not easily break, bend or deform, thereby overcoming the technical problem that the main bodies have reduced firmness due to the formation of a through-hole vertically penetrating therethrough.

Description

Motor mounts, reinforcements and multi-rotor unmanned aerial vehicles

Technical field

The present application relates to a multi-rotor unmanned aerial vehicle, and more particularly to a motor mount and a reinforcement for a multi-rotor unmanned aerial vehicle.

Background technique

Today's multi-axis aircraft are used in a wide range of applications and are used in aerial photography. Mount the camera on the multi-axis aircraft and take the camera for aerial photography. In order to provide a stable shooting platform for the camera, more and more camera heads with stabilization functions are applied to the multi-axis aircraft. Some of these movements are three-axis stabilization pans that allow the camera to rotate in three dimensions.

Chinese Patent Application No. 201410045372.6 discloses a multi-axis unmanned aerial vehicle which is rotated synchronously by a motor simultaneously driving four rotors, and the motor is fixed to the mounting seat of the bracket through a motor mount.

In the above technical solution, the motor mount is arranged in an L shape, and the motor mount is easily swayed during flight, and at the same time, a large noise is generated, and in addition, the motor mount is easily bent when colliding with an external force. Deformation.

In the above technical solution, in order to facilitate the installation of the transmission device, the mounting seat of the bracket penetrates into the groove or the through hole in the vertical direction, thereby causing the mounting seat of the bracket to be weak in strength, and the deformation is prone to occur for a long time.

Summary of the invention

It is an object of the present invention to provide a motor mount, a stiffener and a multi-rotor unmanned aerial vehicle to overcome the deficiencies of the prior art.

To achieve the above object, the present invention provides the following technical solutions:

The embodiment of the present application discloses a multi-rotor unmanned aerial vehicle, including a bracket and a driving system mounted on the bracket,

The bracket includes a main support rod, a rotor support rod, and a main support rod and a rotor branch a mounting seat between the strut, the mounting base includes a main body portion and a mounting portion protruding from a side of the main body portion, the mounting seat is provided with a through hole or a groove in a vertical direction, and the mounting portion is provided with a useful Inserting a mounting hole of the rotor support rod, the mounting hole is in communication with the through hole or the groove, and the main body portion is partitioned into the first main body portion and the second main body portion by the through hole or the groove;

The drive system includes a motor and a plurality of rotors fixed to an end of the rotor support rod, the motor drives the plurality of rotors to rotate synchronously, and the motor is fixed to the mount through a motor mount ,

The motor mount includes an end plate disposed in a vertical direction, and a first fixing plate and a second fixing plate extending horizontally from the same side of the end plate, and the first fixing plate and the second fixing plate are formed between the upper fixing plate and the second fixing plate A clamping space, the main body portion of the mounting seat is clamped in the clamping space.

Preferably, in the multi-rotor UAV described above, the first fixing plate is fixed to the first body portion and the second body portion, respectively.

Preferably, in the multi-rotor UAV described above, the second fixing plate is fixed to the first body portion and the second body portion, respectively.

Preferably, in the multi-rotor UAV, the first fixing plate is respectively provided with a first mounting hole corresponding to the upper portion of the first body portion and the second body portion, and the second fixing plate is provided with a second The through hole is respectively formed in the first body portion and the second body portion, and the through hole corresponds to the first mounting hole and the second mounting hole.

Preferably, in the multi-rotor UAV described above, the first fixing plate and the second fixing plate are respectively provided with weight reducing holes.

Preferably, in the multi-rotor UAV described above, the rotor support bar comprises a first rotor support bar, a second rotor support bar, a third rotor support bar and a fourth rotor support bar, the mounts comprising fixed respectively a first mounting seat and a second mounting seat at the two ends of the main support rod, the motor mounting seat is fixed on the first mounting seat, and the rotor supporting rod and the main supporting rod are in the same plane, the first a rotor support rod and a second rotor support rod are respectively fixed at two ends of the first mounting seat, and the third rotor support rod and the fourth rotor support rod are respectively fixed at two ends of the second mounting seat, The first rotor support rod, the second rotor support rod, the third rotor support rod and the fourth rotor support rod are respectively disposed perpendicular to the main support rod.

Preferably, in the multi-rotor UAV described above, the second mount is opened in a vertical direction Providing a through hole or a groove, the second mounting seat is fixed with a reinforcing member, the reinforcing member comprises a first reinforcing plate disposed in a vertical direction, and horizontally extending from the upper and lower ends of the first reinforcing plate The second reinforcing plate and the third reinforcing plate form a clamping space between the second reinforcing plate and the third reinforcing plate, and the second mounting seat is clamped in the clamping space.

Preferably, in the multi-rotor UAV described above, two mounting holes are formed in the third main body portion and the fourth main body portion, and the second reinforcing plate and the third reinforcing plate are respectively mounted correspondingly. The hole is formed with a through hole, and the reinforcing member and the second mounting seat are fixed by four screws arranged in a rectangular shape.

Preferably, in the multi-rotor UAV described above, each of the rotor support rods is respectively mounted with a landing frame below, and each of the landing gears includes a support leg, a sliding sleeve and a connecting rod. One end of the support leg is rotatably coupled to the rotor support rod, and the sliding sleeve slides on the support leg, one end of the connecting rod is rotatably coupled to the sliding sleeve, and the other end is rotatably coupled to the rotor support a rod, a fixed leg is fixed to an end of the supporting leg, and the sliding sleeve is sleeved on an outer side of the supporting leg.

The embodiment of the present application further discloses a motor mount for a multi-rotor unmanned aerial vehicle, comprising an end plate disposed in a vertical direction, and a first fixed plate and a second fixed plate extending horizontally from the same side of the end plate. A clamping space is formed between the first fixing plate and the second fixing plate.

The embodiment of the present application further discloses a reinforcing member of a multi-rotor UAV, comprising a first reinforcing plate disposed in a vertical direction, and a second reinforcing plate and a horizontal extending horizontally from the upper and lower ends of the first reinforcing plate The three reinforcing plates form a clamping space between the second reinforcing plate and the third reinforcing plate disposed above and below.

The advantages of the present invention over the prior art are:

1) The motor mount of the present invention is fixed to the first mount by two fixing plates disposed above and below, so that the motor mount is more stable, and the motor mounted on the motor mount is not easily shaken. In addition, the fixing plate is fixed to the first main body portion and the second main body portion respectively across the through hole, and the first fixing plate, the second fixing plate and the end plate realize the wrapping of the main body portion, so that the main body portion can be more firm. It is not easy to be broken or bent and deformed, and overcomes the technical problem that the main body portion is reduced in firmness due to the formation of through holes through the upper and lower sides;

2) The invention can make the transmission of the motor power more through the baffle fixed relative to the end plate. Smooth, reduce vibration of the motor bracket and reduce noise generation. The baffle is arranged in a diamond shape to minimize the weight of the baffle;

3) A landing gear is fixed under each rotor support rod, which is more stable when falling, and the landing gear is shielded under the rotor support rod, and does not occupy horizontal space during transportation and storage.

DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings to be used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are only It is a few embodiments described in the present application, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a perspective view of a multi-rotor unmanned aerial vehicle in accordance with an embodiment of the present invention;

2 is a perspective view showing another angle of a multi-rotor unmanned aerial vehicle according to an embodiment of the present invention;

3 is a schematic exploded view of a multi-rotor UAV in accordance with an embodiment of the present invention;

4 is a schematic structural view of a motor mounting seat according to a specific embodiment of the present invention;

FIG. 5 is a schematic structural view of a baffle according to a specific embodiment of the present invention; FIG.

Figure 6 is a cross-sectional view of the main support rod in accordance with an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are described in detail below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

As shown in FIGS. 1 through 3, the multi-rotor UAV includes a bracket 10 and a drive system 20 mounted to the bracket 10.

The bracket 10 includes a main support rod 11, a first rotor support rod 12, a second rotor support rod 13, a third rotor support rod 14, and a fourth rotor support rod 15, which are located in the same plane, and both ends of the main support rod 11 A first mount 16 and a second mount 17 are respectively fixed, and the first rotor support rod 12 and the second rotor support rod 13 are respectively fixed to two sides of the first mount 16, and the third rotor support The rod 14 and the fourth rotor support rod 15 are respectively fixed to both sides of the second mount 17. the first The rotor support bar 12, the second rotor support bar 13, the third rotor support bar 14 and the fourth rotor support bar 15 are disposed in a first direction, the main support bar 11 being disposed in a second direction, the first direction being perpendicular to the second direction.

The first mount 16 includes a main body portion 161 and a mounting portion 162 projecting from both ends thereof, and the two mounting portions 162 are respectively configured to fix the first rotor support rod 12 and the second rotor support rod 13.

The main body portion 161 includes a through hole 1611 opened in a vertical direction, and the mounting portion 162 is provided with a mounting hole for inserting the first rotor support rod 12 and the second rotor support rod 13 , and the mounting hole communicates with the through hole 1611 .

The first rotor support rod 12, the second rotor support rod 13, the third rotor support rod 14 and the fourth rotor support rod 15 are hollow round rods, and the drive system 20 can be disposed through the belt in the hollow body of the round rod. The rotor at the end of the support rod is driven.

The first mount 16 and the second mount 17 are symmetrically mounted on both ends of the main support rod 11, and therefore the structure of the second mount 17 will not be described again.

The drive system 20 includes a motor 21 and four rotors 22 mounted to the ends of the rotor support rods. The motor 21 drives the four rotors 22 to rotate synchronously by a transmission.

The drive system 20 also includes a motor mount 23, a motor synchronizing wheel 24, a main drive synchronizing wheel 25, a synchronous drive belt and a spindle 27. The motor mount 23 is fixed on the first mount 16, the motor 21 is fixed on the motor mount 23, the motor synchronous wheel 24 is mounted on the output shaft of the motor 21, and the spindle 27 is rotatably disposed in the main support rod 11, the main drive The timing wheel 25 is sleeved at the end of the main shaft 27 and fixed to the main shaft 27, and the motor synchronizing wheel 24 is located directly above the main drive synchronizing wheel 25, and the motor synchronous wheel 24 and the main drive synchronizing wheel 25 are interlocked by the synchronous drive belt.

In order to prevent slippage between the synchronous drive belt and the motor synchronous wheel 24 and the main drive synchronous wheel 25, an intermeshing cogging is provided between the inner surface of the synchronous drive belt and the outer surface of the motor synchronous wheel 24, the main drive synchronous wheel 25 The outer surface is also provided with a slot that engages the inner surface of the synchronous drive belt.

A drive shaft in a vertical direction is connected to the lower side of each of the rotors 22. The bottom end of the drive shaft is sleeved and fixed to a rotor synchronous wheel. The two ends of the main shaft are respectively fixed with a double-head main drive synchronous wheel (two side-drive synchronous wheels integrally formed), and each double-head main drive synchronous wheel is provided with two driving parts side by side, and two driving parts respectively and two One synchronous drive belt is connected at one end, and the other end of the synchronous drive belt is sleeved on the outer side of a rotor synchronous wheel and can drive the rotor synchronous wheel to rotate.

The synchronous drive belt is actuated in the hollow cavity of the rotor support rod, and the double-head main drive synchronous wheel is exposed. In the through hole 1611, it is convenient to synchronize the installation between the transmission belt and the double-head main drive synchronous wheel.

In the above technical solution, the driving force is output to the main shaft by a motor, and the rotation of the main shaft is controlled, and the main shaft further outputs power to the four rotors through the four synchronous transmission belts.

As shown in FIG. 4, the motor mount 23 includes a vertically disposed end plate 231, and a first fixing plate 232 and a second fixing plate 233 extending horizontally from the same side of the end plate 231, the first fixing plate 232 and The second fixing plate 233 forms a clamping space above and below, and the main body portion 161 of the first mounting seat 16 is clamped in the clamping space.

The main body portion 161 of the first mount 16 is partitioned into a first main body portion and a second main body portion by the through hole 1611 in the second direction, and the first fixing plate 232 is fixed to the first main body portion and the second main body portion, respectively, and the second fixing portion The plates 233 are fixed to the first body portion and the second body portion, respectively.

Further, the first fixing plate 232 is respectively provided with a first mounting hole 2321 corresponding to the upper portion of the first main body portion and the second main body portion, and the second fixing plate 233 is provided with a second mounting hole 2331, and the second mounting hole 2331 and the second mounting hole A mounting hole 2321 corresponds to the top and bottom. The first fixing plate 232 and the second fixing plate 233 are respectively fixed at four points with the main body portion, and the four points are arranged in a rectangular shape.

When the motor mount 23 is fixed, the main body portion 161 of the first mount 16 is first clamped between the first fixing plate 232 and the second fixing plate 233, and then the screw is sequentially passed through the first mounting hole 2321 and the main body. The portion 161 and the second mounting hole 2331 enable fixation between the motor mount 23 and the first mount 16.

In this technical solution, the motor mount 23 is fixed to the first mount 16 by two fixing plates disposed above and below, so that the motor mount 23 is more stable, and the motor mounted on the motor mount 23 is less likely to shake. In addition, the fixing plate is fixed to the first main body portion and the second main body portion respectively across the through hole, and the first fixing plate 232, the second fixing plate 233, and the end plate 231 realize the wrapping of the main body portion, so that the main body portion can be ensured. It is more sturdy, is not easy to be broken, and is bent and deformed, and overcomes the technical problem that the main body portion is reduced in firmness due to the formation of the through holes through the upper and lower sides.

Further, the first fixing plate 232 and the second fixing plate 233 are respectively provided with long waist-shaped weight reducing holes 2322 in the second direction, thereby reducing the weight of the aircraft without weakening the firmness.

The motor mount 23 further includes a baffle 234 located in a vertical direction and disposed opposite the end plate 231. The motor synchronizing wheel 24 and the main drive synchronizing wheel 25 are located between the baffle 234 and the end plate 231, and the baffle 234 It is fixed to the end plate 231 by a connecting rod 235.

As shown in FIG. 5, the baffle 234 is disposed in a diamond shape, and a mounting hole 2341 is disposed at a top end and a left and right ends thereof. The connecting rod 235 is disposed between the mounting hole 2341 and the end plate 231. The motor timing wheel 24 is formed in a space surrounded by three connecting rods 235. The bottom end of the baffle 234 is provided with a through hole 2342 which is sleeved at the end of the main shaft 27.

The baffle 234 is diamond-shaped to minimize the weight of the baffle 234.

Further, the upper end and the lower end of the baffle 234 are respectively provided with triangular and trapezoidal weight reducing holes 2343 to further reduce the weight of the baffle 234.

In this technical solution, the baffle 234 fixed relative to the end plate 231 can make the transmission of the motor power more stable, reduce the vibration of the motor bracket, and reduce the generation of noise.

A reinforcing member 40 is fixed to the main body portion of the second mounting seat 17, and the reinforcing member 40 includes a first reinforcing plate 41 disposed in a vertical direction, and a second reinforcing plate extending horizontally from the upper and lower ends of the first reinforcing plate 41. 42 and the third reinforcing plate 43 form a clamping space between the second reinforcing plate 42 and the third reinforcing plate 43 disposed above and below, and the main body portion of the second mounting seat 17 is clamped in the clamping space.

The main body portion of the second mounting seat 17 is partitioned into a third main body portion and a fourth main body portion by the through hole in the second direction, and the third main body portion and the fourth main body portion are respectively formed with two mounting holes up and down, and the second reinforcing portion is formed. A through hole is formed in each of the plate 42 and the third reinforcing plate 43 corresponding to the mounting hole, and the reinforcing member 40 and the main body portion of the second mounting seat 17 are fixed by four screws arranged in a rectangular shape.

The second mounting seat 17 is wrapped and fixed by the reinforcing member 40, so that the fastening degree can be increased, and the technical problem that the main body portion is lowered by forming the through hole through the upper and lower sides is overcome.

The second reinforcing plate 42 and the third reinforcing plate 43 are respectively provided with long waist-shaped weight reducing holes 44 in the second direction, thereby reducing the weight of the aircraft without weakening the firmness.

A landing gear 30 is fixed to the lower side of the first rotor support bar 12, the second rotor support bar 13, the third rotor support bar 14, and the fourth rotor support bar 15, respectively.

The landing gear 30 includes a support leg 31, a sliding sleeve 32 and a connecting rod 33. One end of the supporting leg 31 is rotatably connected to the rotor supporting rod, and the sliding sleeve 32 is sleeved on the supporting leg 31 and can support the supporting leg. 31 slides, one end of the connecting rod 33 is rotatably connected to the sliding sleeve 32, and the other end is rotatably coupled to the rotor supporting rod. A spherical leg 34 is also fixed to the end of the support leg 31.

The main support rod 11 is a support platform, and a landing gear, an aerial camera head and the like can be fixed under the support rod, and the power supply, the circuit board and the like can be carried on the upper support rod 11 .

As shown in FIG. 6, the main support rod 11 includes a housing 111 and an inner casing 112 fixed to the outer casing 111. The inner casing 112 is formed with a main shaft space 1121 in the axial direction, and a wiring space 1111 is defined between the inner casing 112 and the outer casing 111. . A wire window 1112 is also formed on the surface of the outer casing 111.

The main shaft 27 is protected from the main shaft space 1121, and its rotation is not disturbed by external wiring. The wire body for realizing the circuit connection is arranged in the wiring space 1111, which can be connected to an external flight control, power source or the like through the wire window 1112.

In this technical solution, the internal space of the main support rod 11 is fully utilized, and the inner space of the main support rod 11 is shared by the main line and the main shaft, but the main body does not interfere with each other, and the line body is arranged inside the main support rod 11, and is not easy to hang with the outside. bump.

It should be noted that, in this context, relational terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply such entities or operations. There is any such actual relationship or order between them. Furthermore, the term "comprises" or "comprises" or "comprises" or any other variations thereof is intended to encompass a non-exclusive inclusion, such that a process, method, article, or device that comprises a plurality of elements includes not only those elements but also Other elements, or elements that are inherent to such a process, method, item, or device. An element that is defined by the phrase "comprising a ..." does not exclude the presence of additional equivalent elements in the process, method, item, or device that comprises the element.

The above description is only a specific embodiment of the present application, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present application. It should be considered as the scope of protection of this application.

Claims

A multi-rotor unmanned aerial vehicle, comprising: a bracket and a driving system mounted on the bracket,

The bracket includes a main support bar, a rotor support bar, and a mount fixed between the main support bar and the rotor support bar, the mount includes a main body portion and a mounting portion protruding from a side of the main body portion, The mounting seat is provided with a through hole or a groove in a vertical direction, and the mounting portion is provided with a mounting hole for inserting the rotor support rod, and the mounting hole communicates with the through hole or the groove, the main body The portion is partitioned into the first body portion and the second body portion by the through hole or the groove;

The drive system includes a motor and a plurality of rotors fixed to an end of the rotor support rod, the motor drives the plurality of rotors to rotate synchronously, and the motor is fixed to the mount through a motor mount ,

The motor mount includes an end plate disposed in a vertical direction, and a first fixing plate and a second fixing plate extending horizontally from the same side of the end plate, and the first fixing plate and the second fixing plate are formed between the upper fixing plate and the second fixing plate A clamping space, the main body portion of the mounting seat is clamped in the clamping space.
The multi-rotor unmanned aerial vehicle according to claim 1, wherein said first fixed plate is fixed to said first body portion and said second body portion, respectively.
A multi-rotor unmanned aerial vehicle according to claim 1, wherein said second fixed plate is fixed to said first body portion and said second body portion, respectively.
The multi-rotor unmanned aerial vehicle according to claim 1, wherein the first fixing plate is respectively provided with a first mounting hole corresponding to the upper portion of the first main body portion and the second main body portion, and the second fixing plate A second mounting hole is defined, and the first body portion and the second body portion respectively define a through hole, and the through hole corresponds to the first mounting hole and the second mounting hole.
The multi-rotor unmanned aerial vehicle according to claim 1, wherein the first fixed plate and the second fixed plate are respectively provided with weight reducing holes.
The multi-rotor unmanned aerial vehicle of claim 1 wherein said rotor support bar comprises a first rotor support bar, a second rotor support bar, a third rotor support bar and a fourth rotor support bar, said mounting The seat includes a first mounting seat and a second mounting seat respectively fixed to the two ends of the main supporting rod, the motor mounting seat is fixed on the first mounting seat, and the rotor supporting rod and the main supporting rod are located in the same plane The first rotor support rod and the second rotor support rod are respectively fixed to two ends of the first mount, and the third rotor support rod and the fourth rotor support rod are respectively fixed to the At both ends of the second mount, the first rotor support rod, the second rotor support rod, the third rotor support rod and the fourth rotor support rod are respectively disposed perpendicular to the main support rod.
The multi-rotor unmanned aerial vehicle according to claim 6, wherein the second mounting seat is provided with a through hole or a groove in a vertical direction, and the second mounting seat is fixed with a reinforcing member, the reinforcing The piece includes a first reinforcing plate disposed in a vertical direction, and a second reinforcing plate and a third reinforcing plate extending horizontally from the upper and lower ends of the first reinforcing plate, the second reinforcing plate and the third reinforcing plate disposed above and below Forming a clamping space between the plates, the second mounting seat is clamped in the clamping space, and the third body portion and the fourth body portion are respectively formed with two mounting holes up and down, the second A through hole is formed in each of the reinforcing plate and the third reinforcing plate, and the reinforcing member and the second mounting seat are fixed by four screws arranged in a rectangular shape.
The multi-rotor unmanned aerial vehicle according to claim 1, wherein each of the rotor support rods is respectively mounted with a landing frame, and each of the landing gears comprises a supporting leg, a sliding sleeve and a connecting body respectively. a rod, one end of the supporting leg is rotatably connected to the rotor supporting rod, the sliding sleeve is slid on the supporting leg, one end of the connecting rod is rotatably connected to the sliding sleeve, and the other end is rotatably connected to The rotor support rod has a spherical leg fixed to an end of the support leg, and the sliding sleeve is sleeved on an outer side of the support leg.
A motor mount for a multi-rotor unmanned aerial vehicle, comprising: an end plate disposed in a vertical direction; and a first fixed plate and a second fixed plate extending horizontally from the same side of the end plate, the first A clamping space is formed between the fixing plate and the second fixing plate.
A reinforcing member for a multi-rotor unmanned aerial vehicle, comprising: a first reinforcing plate disposed in a vertical direction; and a second reinforcing plate and a third reinforcing plate extending horizontally from the upper and lower ends of the first reinforcing plate A clamping space is formed between the second reinforcing plate and the third reinforcing plate disposed above and below.