WO2020029796A1 - Ensemble hélice, ensemble d'alimentation et véhicule aérien sans pilote - Google Patents

Ensemble hélice, ensemble d'alimentation et véhicule aérien sans pilote Download PDF

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Publication number
WO2020029796A1
WO2020029796A1 PCT/CN2019/097335 CN2019097335W WO2020029796A1 WO 2020029796 A1 WO2020029796 A1 WO 2020029796A1 CN 2019097335 W CN2019097335 W CN 2019097335W WO 2020029796 A1 WO2020029796 A1 WO 2020029796A1
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WO
WIPO (PCT)
Prior art keywords
tooth
central axis
disc
end gear
groove
Prior art date
Application number
PCT/CN2019/097335
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English (en)
Chinese (zh)
Inventor
孙维
张海浪
罗东东
Original Assignee
深圳市道通智能航空技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 深圳市道通智能航空技术有限公司 filed Critical 深圳市道通智能航空技术有限公司
Publication of WO2020029796A1 publication Critical patent/WO2020029796A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/16—Blades
    • B64C11/20—Constructional features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
    • B64C1/30—Parts of fuselage relatively movable to reduce overall dimensions of aircraft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/32—Rotors
    • B64C27/46—Blades
    • B64C27/473—Constructional features

Definitions

  • the invention relates to the technical field of unmanned aerial vehicles, in particular to a propeller assembly, a power assembly and an unmanned aerial vehicle.
  • Propellers are power components that generate the lift, pull, and operating forces required for UAV flight, but the blades are not convenient to store and carry.
  • embodiments of the present invention provide a propeller assembly, a power assembly, and an unmanned aerial vehicle.
  • the propeller of the propeller assembly can be folded or unfolded, and takes up less space when carried.
  • the embodiments of the present invention provide the following technical solutions:
  • a propeller assembly including a propeller, the propeller includes: a first blade assembly; a second blade assembly movably mounted on the first blade assembly; and when the second blade assembly When rotating around the first center axis in the first direction, the second blade assembly drives the first blade assembly to rotate in the first direction around the first center axis; the first blade assembly may be With respect to the second paddle assembly rotating toward the second direction about the second central axis, the first direction and the second direction are disposed opposite to each other.
  • first central axis and the second central axis are coincident with each other.
  • the first blade assembly includes a first blade structure and a limit pivot; the limit pivot may be fixedly disposed relative to the first blade structure; and the second blade The component is movably mounted on the limit pivot, so that the first blade structure can rotate relative to the second blade component around the second central axis in the second direction.
  • the first paddle structure includes a first end gear; the limit pivot can be fixedly disposed relative to the first end gear, and the first end gear includes a first disk Tooth surface, the first disc tooth surface is provided with a first disc tooth; the second paddle assembly includes a second end tooth disc; the second end tooth disc is sleeved on the limit pivot shaft, so that The first end gear is rotatable about the second center axis with respect to the second end gear toward the second direction, and is movable along the second center axis with respect to the second end gear.
  • the second end tooth disk includes a second disk tooth surface; the second disk tooth surface is disposed toward the first disk tooth surface, and the second end tooth surface is provided with a second disk tooth; the second disk The teeth may abut against the first end teeth, so that when the second end teeth rotate about the first central axis toward the first direction, the second end teeth drive the first end teeth Coiled around the first central axis in the first direction.
  • the first plate tooth includes a first slope surface; the first slope surface is disposed at an angle with the first direction, and the first slope surface and the first plate tooth surface The range of the slope angle is [90,180) degrees; the second disc teeth can abut against the first slope surface, so that when the first end teeth rotate around the first central axis toward the first direction At this time, the second end-toothed disc drives the first end-toothed disc to rotate about the first central axis in the first direction.
  • the slope angle between the first slope surface and the first disc tooth surface is 90 degrees.
  • the second plate tooth includes a third slope surface, and the third slope surface may abut the first slope surface.
  • the number of the first disc teeth is at least two; at least two of the first disc teeth are circumferentially distributed around the first central axis; and the second disc teeth can be abutted simultaneously Two adjacent first toothed teeth, such that the first end toothed disk is relatively fixed with the second end toothed disk; the second end toothed disk may Said second center axis moves; when said second end tooth disk rotates relative to said first end tooth disk about said first center axis toward said first direction, said first end tooth disk can be relatively The second end-toothed disc moves along the second central axis, so that the second disc-tooth abuts at most one of the first disc-teeth.
  • each of the first plate teeth further includes a second slope surface; the second slope surface is disposed at an angle with the second direction, and the second slope surface and the first The range of the slope angle of the plate tooth surface is (0,90) degrees; when the second plate tooth abuts against the first slope surface of one of the first plate teeth and abuts against the other first plate A second slope surface of the teeth, so that the first end gear plate is fixed to the second end gear plate; the second gear plate can abut against at least one second slope surface of the first plate gear, So that when the second end tooth disk rotates in the second direction relative to the first end tooth disk about the second center axis, the first end tooth disk relative to the first center tooth axis The second end gear is moved.
  • a range of a slope angle between the second slope surface and the second disc tooth surface is 45 degrees.
  • the second plate teeth include a fourth slope surface, and the fourth slope surface may abut a second slope surface of at least one of the first plate teeth.
  • the second plate tooth further includes a second transition surface; the second transition surface is connected between the third slope surface and the fourth slope surface; when the third slope surface The first slope surface abuts on one of the first plate teeth, and the fourth slope surface abuts on a second slope surface of the other second plate teeth.
  • the second transition surface, the first A gap is formed between a slope surface and the second slope surface.
  • the first plate tooth further includes a first transition surface; the first transition surface is connected between the first slope surface and the second slope surface; the second transition surface may be Abuts against the first transition surface.
  • the first paddle assembly further includes an elastic member; the elastic member is configured to provide a pressure for pressing the first end gear to the second end gear, so that the first The disc teeth abut against the second disc teeth.
  • the limit pivot includes a connection portion and a first limit portion; the connection portion is fixedly connected to the second limit portion; and the first end gear can be opposite to the connection
  • the second end gear is sleeved on the connecting portion, and the elastic member abuts between the second limiting portion and the second end gear.
  • the limit pivot is movably connected to the first end tooth disc; the limit pivot further includes a first limit portion; the connection portion is connected to the first limit portion And the second limit portion; the first end gear is sleeved on the connecting portion, and the first end gear can be abutted against the first limit portion, so that the limit The position pivot is fixed relative to the first end gear.
  • the propeller assembly further includes a fixing base for mounting on a rotor of a driving device, and the driving device is used for driving the fixing base to rotate about the first central axis; the The propeller can be engaged with the fixed seat, so that the propeller is fixed relative to the fixed seat.
  • the fixing seat is provided with a limiting slot; the second limiting portion is received in the limiting slot, and the second limiting portion abuts on the bottom of the limiting slot,
  • the second end gear is rotatable about the second central axis with respect to the fixed base, and is movable along the second central axis with respect to the fixed base.
  • the second propeller assembly further includes a clamping structure; the clamping structure is disposed on a side of the second end tooth disc facing away from the tooth surface of the second disc; the clamping structure includes a card Holding arm; when the holding arm is located between the fixed seat and the second end toothed disc, the second end toothed disc can be rotated about the second center axis with respect to the fixed seat, so that The second end gear is located at a first preset position; when the second end gear is located at a first preset position, the second end gear may be along the second center relative to the fixed seat.
  • the axis is moved to a second preset position, so that the fixed seat is located between the clamping arm and the second end gear; when the second end gear is located in the second preset position, the first The two-end toothed disc can be rotated relative to the fixed seat around the second central axis to a third preset position, so that the clamping arm can abut the side of the fixed seat facing away from the second end toothed disc, so that The second end gear is fixed relative to the fixed seat; the elastic member is further configured to provide a distance from the second end gear to The pulling force of the fixing base is such that when the second end gear is rotated to the third preset position about the second central axis relative to the fixing base, the clamping arm can abut against the fixing base and depart from it.
  • One side of the second end gear is moved to a second preset position, so that the fixed seat is located between the clamping arm and the second end gear; when the second end gear is located in the second preset position, the first The two-end toothed disc can
  • the holding structure further includes a connecting arm, the connecting arm is connected between the holding arm and the second end gear; the fixing seat is further provided with a receiving groove;
  • the accommodating groove and the limiting groove are located on the same surface of the fixed seat; when the second end gear is in a first preset position, the holding arm can pass through the accommodating groove, so that The second end gear is moved to the second preset position along the second central axis with respect to the fixed seat; when the second end gear is located in the second preset position, the connecting arm may be moved along the The accommodating groove is moved, so that the second end gear is rotated to the third preset position relative to the fixed seat about the second central axis.
  • the receiving groove includes a first groove wall, a second groove wall, and a third groove wall; the first groove wall, the second groove wall, and the third groove wall are all arcs. Plane, the centerline of the first slot wall, the centerline of the second slot wall, and the centerline of the third slot wall all coincide with the second central axis; the first slot wall and The second groove wall is disposed opposite to each other, the third groove wall is disposed opposite to the first groove wall, the first groove wall is disposed away from the second central axis, and the holding arm is directed away from the second groove wall.
  • the direction of the central axis extends; when the second end gear is in the first preset position, the holding arm can pass through a first accommodation between the first groove wall and the second groove wall Position; when the second end gear is in a second preset position, the connecting arm can be moved from the first accommodation position to a second accommodation position, and the second accommodation is located in the first slot Between the wall and the third groove wall.
  • the fixing seat is further provided with a buckling groove; the buckling groove and the limiting groove are located on the opposite side of the fixing seat; when the second end gear is located at a third preset When in position, the holding arm can be received in the holding groove, and the holding arm abuts against the bottom of the holding groove of the holding groove, so that the second end gear is opposite to the fixing seat. fixed.
  • the buckle slot further includes a first limit wall and a second limit wall; the first limit wall is opposite to the second limit wall, and the bottom of the slot is located Between the first limiting wall and the second limiting wall; the first limiting wall is arranged at an angle with the first direction, and the second limiting arm is arranged with the second direction Angle setting; when the holding arm abuts against the bottom of the buckling groove, the holding arm abuts against the first limiting wall, and the holding arm abuts against the first Two limiting walls.
  • the elastic member when the second end gear is fixed relative to the fixing base, the elastic member may abut the second end gear, so that the second end gear is abutted on The first end gear.
  • a power assembly including: the propeller assembly as described above; and a driving device for driving the propeller to rotate about the first central axis in a first direction.
  • an unmanned aerial vehicle including a power pack as described above.
  • the propeller assembly includes a propeller, the propeller includes a first blade assembly, and a second blade assembly is movably mounted on the The first blade assembly; when the second blade assembly rotates in a first direction about a first center axis, the second blade assembly drives the first blade assembly around the first center axis Turn in the first direction; the first blade assembly is rotatable relative to the second blade assembly about the second central axis in the second direction, the first direction and the second Set in the opposite direction.
  • the first blade assembly can be rotated relative to the second blade assembly to fold or unfold the propeller, so that the propeller assembly occupies less space during carrying and is not easily broken.
  • FIG. 1 is a schematic three-dimensional structure diagram of an unmanned aerial vehicle according to an embodiment of the present invention
  • FIG. 2 is a schematic perspective structural view of a power component in the unmanned aerial vehicle shown in FIG. 1;
  • FIG. 3 is a disassembly schematic diagram of the power component shown in FIG. 2;
  • FIG. 4 is a disassembly schematic diagram of a propeller component in the power component shown in FIG. 2;
  • FIG. 5 is a disassembly schematic diagram of a propeller in the propeller assembly shown in FIG. 4;
  • FIG. 6 is a schematic structural diagram of a first blade structure of the propeller shown in FIG. 5;
  • FIG. 7 is an enlarged view at A shown in FIG. 6;
  • FIG. 8 is a schematic structural diagram of a second blade assembly of the propeller shown in FIG. 5;
  • FIG. 9 is an enlarged view of a position B shown in FIG. 8;
  • FIG. 10 is a schematic structural view of the second blade assembly shown in FIG. 8 from another angle;
  • FIG. 11 is a schematic structural diagram of a fixing seat of the propeller assembly shown in FIG. 4;
  • FIG. 12 is a schematic structural view of the fixing base shown in FIG. 11 at another angle;
  • FIG. 13 is a schematic structural diagram of another implementation manner of the propeller shown in FIG. 5.
  • the propeller assembly provided by the embodiment of the present invention is a propeller assembly with a folding function, which is suitable for any application field of mechatronics, and especially can be applied to various movable objects driven by a motor, including but not limited to unmanned aerial vehicles.
  • unmanned aerial vehicle UAV
  • UAV unmanned aerial vehicle
  • an unmanned aerial vehicle is taken as an example for description.
  • Applying the propeller assembly provided in the embodiment of the present invention to the power assembly of an unmanned aerial vehicle can reduce the volume of the propeller assembly, thereby reducing the volume of the unmanned aerial vehicle, and making the unmanned aerial vehicle occupy less space during the carrying process. It is more portable.
  • FIG. 1 is a schematic structural diagram of an unmanned aerial vehicle provided by one embodiment of the present invention.
  • the structure of the unmanned aerial vehicle 1000 includes a fuselage 200, four arms 300 extending from the fuselage 200, and a power assembly 100 installed on each of the arms 300, respectively. That is, the unmanned aerial vehicle 1000 of the present invention is a four-rotor unmanned aerial vehicle, and the number of the power components 100 is four.
  • the unmanned aerial vehicle 1000 may be any other suitable type of rotary wing unmanned aerial vehicle, such as a double-rotor unmanned aerial vehicle, a six-rotor unmanned aerial vehicle, and the like.
  • the power module 100 is applied to other types of unmanned aerial vehicles, the number of the power module 100 may be changed according to actual needs, which is not limited in the embodiment of the present invention.
  • the unmanned aerial vehicle 1000 may further include a gimbal (not shown), which is installed at the bottom of the fuselage 200.
  • the gimbal is used to carry a high-definition digital camera or other camera device to eliminate high-definition digital Disturbances on the camera or other camera devices ensure the clarity and stability of the video captured by the camera or other camera devices.
  • the arm 300 is fixedly connected to the body 200.
  • the arm 300 is integrally formed with the body 200.
  • the arm 300 may also be connected to the body 200 in a manner of being unfolded or folded relative to the body 200.
  • the arm 300 may be connected to the body 200 through a rotating shaft mechanism, so that the arm 300 may be unfolded or folded relative to the body 200.
  • the power assembly 100 includes a driving device 20 and a propeller assembly 10 driven by the driving device 20.
  • the propeller assembly 10 is installed on an output shaft of the driving device 20.
  • the propeller assembly 10 is driven by the driving device 20. Rotate to generate lift or thrust to fly UAV 1000.
  • the driving device 20 may be any suitable type of motor, such as a brushed motor, a brushless motor, a DC motor, a stepper motor, an AC induction motor, and the like.
  • the power assembly 100 of the present invention further includes an electronic governor (not shown) disposed in a cavity formed by the fuselage 200 or the arm 300, and the electronic governor is used for generating
  • the throttle signal generates a motor control signal for controlling the rotation speed of the motor to obtain a flying speed or a flying attitude required by the unmanned aerial vehicle.
  • the throttle controller or the throttle generator may be a flight control module of an unmanned aerial vehicle.
  • the flight control module senses the environment around the UAV through various sensors and controls the flight of the UAV.
  • the flight control module may be a processing module (Application Unit), an Application Specific Integrated Circuit (ASIC), or a Field Programmable Gate Array (FPGA).
  • the UAV's flight control module sends a throttle signal to the electric control board.
  • the electric control board receives the throttle signal, generates and sends the signal to the motor for The motor performs motor control signals such as starting and controlling the rotation speed of the motor.
  • the driving device 20 is configured to drive the propeller assembly 10 to rotate in a first direction about a first central axis O shown in the figure.
  • the propeller assembly 10 includes a fixed base 11 and a propeller 12.
  • the propeller 12 is mounted on the fixed base 11.
  • the propeller 12 includes a first blade assembly 120 and a second blade assembly 122.
  • the second blade assembly 122 is movably mounted on the first blade assembly 120.
  • the second blade assembly 122 when the second blade assembly 122 rotates about the first center axis O toward the first direction, the second blade assembly 122 drives the first blade assembly 120 around the first A central axis O rotates in the first direction.
  • the first blade assembly 120 is rotatable relative to the second blade assembly 122 around a second central axis in a second direction. The first direction is opposite to the second direction.
  • first central axis O and the second central axis are disposed to coincide with each other.
  • the first central axis O is separated from the second central axis, and the first central axis O is disposed parallel to the second central axis.
  • the second paddle assembly 122 includes a ratchet mechanism 30 and a second paddle 1222.
  • the second paddle 1222 is fixedly connected to the ratchet mechanism 30.
  • the ratchet mechanism 30 includes a non-return pawl 31, an elastic piece 32, a base 33, a limiting shaft 34, and an internal meshing ratchet 35.
  • the base 33 is partially accommodated in the internal meshing ratchet 35, and the base 33 is separated from the internal meshing ratchet 35.
  • One end of the check pawl 31 is rotatably connected to the base 33, The other end of the non-return pawl 31 may abut the inner ratchet tooth surface of the internal engagement ratchet wheel 35.
  • the internally engaging ratchet wheel 35 can rotate relative to the base 33 about the second central axis O toward the second direction.
  • the limit axis 34 and the base 33 are fixedly disposed, and the center line of the limit axis 34 and the second central axis are coincident with each other.
  • the first paddle assembly 120 is fixedly disposed with the limiting shaft 34.
  • the ratchet mechanism can also be replaced with another check mechanism.
  • the first blade assembly 120 includes a first blade structure 124, a limit pivot 126, and an elastic member 128.
  • the limit pivot 126 can be fixedly disposed relative to the second blade structure 124.
  • the member 128 is mounted on the limit pivot 126.
  • the second paddle assembly 122 is movably mounted on the limit pivot 126, so that the first paddle structure 124 can be moved relative to the second paddle assembly 122 around the second central axis toward the first It rotates in two directions, and the first blade structure 124 is movable along the second central axis with respect to the second blade assembly 122.
  • the first paddle structure 124 includes a first end sprocket 1240 and a first paddle 1242.
  • the first paddle 1242 is fixedly connected to the first end sprocket 1240.
  • the limit pivot 126 may be fixedly disposed relative to the first end gear 1240.
  • the first end tooth plate 1240 is a relatively flat cylindrical structure, and the center line of the first end tooth plate 1240 coincides with the second center axis.
  • the first end tooth The disk 1240 includes a first disk tooth surface 12400, a first mounting surface 12401, and a first side surface 12402.
  • the first disk tooth surface 12400 is disposed opposite to the second mounting surface 12401, the second side surface 12402 is connected between the first disk tooth surface 12400 and the first mounting surface 12401, and the A first side surface 12402 is disposed around the first disc tooth surface 12400 and the first mounting surface 12401, and the first disc tooth surface 12400 is disposed toward the second paddle assembly 122.
  • the second paddle 1242 is connected to the second side surface 12402.
  • the first disc tooth surface 12400 is provided with a first disc tooth 12403.
  • At least two of the first disk teeth 12403 are distributed circumferentially around the second central axis, and every two adjacent ones of the first disk teeth 12403 are arranged at equal intervals.
  • Each of the first plate teeth 12403 includes a first slope surface 12404, a second slope surface 12405, and a first transition surface 12406.
  • the first transition surface 12406 is connected between the first slope surface 12404 and the second slope surface 12404.
  • the first slope surface 12404 is disposed at an angle with the first direction, and the range of the slope angle Q of the first slope surface 12404 and the first disc tooth surface 12400 is [90,180) degrees. In this embodiment, the slope angle Q of the first slope surface 12404 and the first disc tooth surface 12400 is 90 degrees.
  • the second slope surface 12405 is disposed at an angle with the second direction, and the range of the slope angle P between the second slope surface 12405 and the first disc tooth surface 12400 is (0,90) degrees. In this embodiment, the slope angle P of the second slope surface 12405 and the first disc tooth surface 12400 is 45 degrees.
  • the second transition surface 12406 is disposed parallel to the second direction.
  • the first slope surface 12404 is disposed at an angle with the first direction.
  • the second blade assembly rotates around the first center axis O and moves in the first direction, all the The second blade assembly provides a first driving force, and a direction of the driving force is the same as the first direction, that is, the first slope surface 12404 is disposed at an angle with the first direction, so that The driving force can act on the first slope surface 12404 and generate a corresponding component force, which is used to cause the second blade assembly 122 to drive the first blade structure 124, and the component force
  • the direction is normal to the first slope surface 12404, and the second slope surface 12405 and the second direction are set at an included angle for the same reason. Due to space limitations, they are not described here one by one.
  • the second blade assembly 122 includes a second end-toothed disk 1220, a second blade 1222, and a retaining structure 1224.
  • the second paddle 1222 and the holding structure 1224 are both fixedly connected to the second end gear 1220.
  • the second end tooth disk 1220 is sleeved on the limit pivot 126, so that the second end tooth disk 1220 can be moved relative to the second end tooth disk 1240 around the second center axis toward the first It rotates in two directions and is movable along the second central axis with respect to the second end gear 1240.
  • the second end tooth plate 1220 is a relatively flat cylindrical structure, and the center line of the second end tooth plate 1220 coincides with the second center axis.
  • the two-end toothed disc 1220 includes a second disc tooth surface 12200, a second mounting surface 12201, and a second side surface 12202.
  • the second disk tooth surface 12200 is disposed opposite to the second mounting surface 12201, the second side surface 12202 is disposed between the second disk tooth surface 12200 and the second mounting surface 12201, and the A second side surface 12202 is disposed around the second disk tooth surface 12200 and the second mounting surface 12201, and the second disk tooth surface 12200 is disposed toward the first disk tooth surface 12400.
  • the second paddle 1222 is connected to the second side surface 12202.
  • the second disc tooth surface 12200 is provided with at least one second disc tooth 12203.
  • the second plate tooth 12203 can abut the first plate tooth 12403, so that when the second end tooth plate 1220 rotates about the first center axis O in the first direction, the second plate tooth 12203
  • the end gear 1220 drives the first end gear 1240 to rotate about the first center axis O in the first direction.
  • the second plate tooth 12203 may abut the first slope surface 12404, so that when the second end tooth plate 1220 rotates about the first center axis O in the first direction, The second end-toothed disc 1220 drives the first end-toothed disc 1240 to rotate about the first central axis O in the first direction.
  • the second disk tooth 12203 can abut against two adjacent first disk teeth 12403 at the same time, so that the second end tooth disk 1220 is fixed to the first end tooth disk 1240.
  • the first end sprocket 1240 is rotated relative to the second end sprocket 1220 about the second center axis in the second direction, the first end sprocket 1240 is relative to the second end
  • the tooth plate 1220 moves along the second central axis, so that the second tooth plate 12203 abuts at most one of the first tooth plate 12403.
  • the first end gear 1240 is fixed to the second end gear 1220.
  • the second sprocket 12203 can abut against at least one second slope surface 12405 of the first spur tooth 1240, so that when the first end sprocket 1240 is about the second center axis O relative to the first When one end sprocket 1240 rotates in the second direction, the first end sprocket 1240 moves relative to the second end sprocket 1220 along the second central axis O.
  • the first A gap is formed between the transition surface 12406, the first slope surface 12404, and the second slope surface 12405.
  • each of the second plate teeth 12203 includes a third slope surface 12204, a fourth slope surface 12205, and a second transition surface 12206.
  • the second transition surface 12206 is connected between the third slope surface 12204 and the fourth slope surface 12205.
  • the third slope surface 12204 may abut the first slope surface 12404 of at least one of the first plate teeth 12403.
  • the fourth slope surface 12205 may abut against at least one second slope surface 12405 of the first plate tooth 12403.
  • the second transition surface 12206 may abut the first transition surface 12406 of at most one of the first disc teeth 12403.
  • the limit pivot 126 is installed on the first end gear 1240, so that the limit pivot 126 is fixed relative to the second end gear 1240. . In some other embodiments, the limit pivot 126 is integrated with the second end gear 1240.
  • the limiting pivot 126 includes a first limiting portion 1260, a connecting portion 1262, and a second limiting portion 1264.
  • the first limiting portion 1260 is opposite to the second limiting portion 1264, and the connecting portion 1262 is connected between the first limiting portion 1260 and the second limiting portion 1264.
  • the limit pivot 126 is provided with a first shaft passing hole 1266, and the first shaft passing hole 1266 penetrates the first limit portion 1260, the connection portion 1262, and the second limit portion 1264 in this order.
  • a center line of the first through-shaft hole 1266 coincides with the first center axis O.
  • the connecting portion 1262 is a cylindrical structure, and a center line thereof coincides with the second central axis.
  • the first limiting portion 1260 is a relatively flat cylindrical structure, and a center line thereof coincides with the second central axis O. A diameter of the first limiting portion 1260 is larger than a diameter of the connecting portion 1262.
  • the second limiting portion 1264 is a ring-shaped structure, and a center line thereof coincides with the second central axis O. A diameter of the second limiting portion 1264 is larger than a diameter of the connecting portion 1262.
  • the first end gear 1240 and the second end gear 1220 are sleeved on the connection portion 1262, and the first end gear 1240 abuts the second limiting portion 1264 and the first Between the two end toothed disks 1220, the connecting portion 1262 is fixed relative to the first end toothed disk 1220, and the second end toothed disk sleeve 1220 is provided at the connection portion 1262, and the second end toothed The disk 1240 is located between the first end toothed disk 1220 and the second limiting portion 1264.
  • the elastic member 128 is a compression spring, and the elastic member 128 is sleeved on the connecting portion 1262 and abuts between the second end tooth plate 1220 and the second limiting portion 1264.
  • the elasticity The piece 128 is used to provide a pressure for pressing the first end tooth plate 1240 to the second end tooth plate 1220, so that the first disc tooth 12403 abuts the second disc tooth 12203.
  • At least one of the holding structures 1224 is disposed on the second mounting surface 12201, and at least one of the holding structures 1224 is distributed circumferentially around the second central axis O.
  • Each of the holding structures 1224 can be made of a rigid material, such as hard plastic or aluminum alloy.
  • Each of the holding structures 1224 includes a connecting arm 12242 and a holding arm 12240 connected to the connecting arm 12242.
  • One end of the connecting arm 12242 is connected to the first mounting surface 12201 of the second end tooth plate 1220, and the other end is connected to the holding arm 12240.
  • the holding arm 12240 extends in a direction away from the second central axis O.
  • the fixing base 11 may be made of rigid materials, such as hard plastic or aluminum alloy.
  • the fixing base 11 is provided with a limiting slot 110, a receiving slot 112, a buckling slot 114, and Mounting hole 116.
  • the limiting groove 110 is disposed on a side of the fixing base 11 facing the second end tooth plate 1220, and a center line of the limiting groove 110 coincides with the second central axis O.
  • the limiting groove The groove bottom of 110 is provided with a second shaft passing hole 118, and a center line of the second shaft passing hole 118 coincides with the first central axis O.
  • a second limit portion 1264 of the limit pivot 126 is received in the limit slot 110, and a side of the second limit portion 1264 facing away from the connection portion 1262 abuts against the limit slot 110.
  • the second end gear is rotatable about the second central axis O relative to the fixed base 11 and is movable along the second central axis O relative to the fixed base 11.
  • the second end toothed plate 1220 When the holding arm 12240 is located between the fixed seat 11 and the second end toothed plate 1220, the second end toothed plate 1220 may be about the second center axis O relative to the fixed seat 11 Rotate the second end gear 1220 to a first preset position; when the second end gear 1220 is at a first preset position, the second end gear 1220 may be opposite to the fixed seat 11 moves to the second preset position along the second central axis O, so that the fixing base 11 is located between the holding arm 12240 and the second end gear 1220; when the second end gear When 1220 is located at the second preset position, the second end gear 1220 can be rotated relative to the fixed base 11 about the second center axis O to a third preset position, so that the holding arm 12240 can be abutted.
  • the elastic member 128 is also used to provide the second end
  • the pulling force of the toothed plate 1220 away from the fixing base 11 is such that when the second end toothed plate 1220 rotates relative to the fixed base 11 about the second central axis O
  • said retainer arm 1240 abut on the fixing base 11 away from the second side end 1220 chainrings.
  • the receiving groove 112 and the limiting groove 110 are located on the same surface of the fixing base 11.
  • the holding arm 12240 can pass through the accommodating groove 112, so that the second end tooth plate 1220 is along the side of the fixing base 11
  • the second central axis O moves to a second preset position; when the second end gear 1220 is located at the second preset position, the connecting arm 12242 can move along the accommodation groove 112, so that the The second end sprocket 1220 is rotated relative to the fixing base 11 around the second central axis O to a third preset position.
  • the receiving groove 112 includes a first groove wall 1120, a second groove wall 1122, and a third groove wall 1124.
  • the first groove wall 1120, the second groove wall 1122, and the third groove wall 1124 are all curved surfaces.
  • the center line of the first groove wall 1120, the center line of the second groove wall 1122, and The centerline of the third groove wall 1124 coincides with the second central axis O.
  • the first groove wall 1120 is opposite to the second groove wall 1122
  • the third groove wall 1124 is opposite to the first groove wall 1120
  • the first groove wall 1120 faces away from the second central axis. O settings.
  • the holding arm 11240 can pass through the first receiving position 1126 between the first groove wall 1120 and the second groove wall 1122. ;
  • the connecting arm 12242 can be moved from the first accommodation position 1126 to the second accommodation position 1128, and the second accommodation 1128 is located at Between the first groove wall 1120 and the third groove wall 1124.
  • the latching groove 114 and the limiting groove 110 are located on opposite sides of the fixing base 11.
  • the holding arm 12240 can be received in the locking groove 114, and the holding arm 12240 abuts against the locking groove 114.
  • the buckle groove bottom 1140 allows the second end tooth plate 1220 to be fixed relative to the fixing base 11.
  • the latching groove 114 further includes a first limiting wall 1142 and a second limiting wall 1144.
  • the first limiting wall 1142 is opposite to the second limiting wall 1144, and the bottom of the buckle groove 1140 is connected between the first limiting wall 1142 and the second limiting wall 1144.
  • the first limiting wall 1142 is disposed at an angle with the first direction
  • the second limiting wall 1144 is disposed at an angle with the second direction.
  • the elastic member 128 may abut the second end tooth plate 1220, so that the second end tooth plate 1220 abuts against ⁇ ⁇ ⁇ ⁇ ⁇ 1240.
  • a plurality of the mounting holes 116 and the limiting grooves 110 are located on the same side of the fixing base 11, and each of the mounting holes 116 is located between two of the adjacent receiving grooves 112.
  • the mounting hole 116 is a countersunk hole.
  • the driving device 20 is a brushless motor
  • the driving device 20 includes a rotor 21 and a stator 22,
  • the stator 22 is a shaft body, and a center line of the stator 22 and the first center axis Phase O coincides
  • the rotor 21 is disposed around the stator 22, and the rotor 21 is rotatable relative to the stator 22 about the first central axis O.
  • the fixing base 11 is fixed to the rotor 21 through a corresponding mounting hole 116 through each bolt, and the stator 22 passes through the second shaft passing hole 118 of the fixing base 11 and is received in the limit.
  • the driving device 20 is configured to drive the fixing base to rotate about the first central axis O in a first direction.
  • the number of first disc teeth 1243 is an even number, and when the first end tooth disk 1220 is rotated relative to the second end tooth disk 1240 about the second center axis in the second direction At this time, the first end gear 1240 can rotate 180 degrees.
  • the first paddle blade 1242 and the second paddle blade 1222 can be positioned on the same straight line when fully expanded, and the first blade The paddle 1242 and the second paddle 1222 are also located on the same straight line when folded, that is, the first paddle 1242 and the second paddle 1222 overlap, so that the first paddle 1242 and the second paddle The paddle 1222 occupies less space when folded.
  • the propeller assembly 10 When the propeller assembly 10 is used, it can be divided into an expanded state and a folded state.
  • the first end sprocket 1220 is made relative to the second end sprocket 1240 about the second center axis toward the second Turn in the direction until the first paddle 1242 and the second paddle 1222 overlap.
  • the first end sprocket 1240 is made relative to the second end sprocket 1220 around the second central axis toward the second Turn in the direction until the first paddle 1242 and the second paddle 1222 are on the same straight line.
  • the propeller assembly 10 includes a propeller 12, and the propeller 12 includes a first blade assembly 120; a second propeller A blade assembly 122 is movably mounted on the first blade assembly 120; when the second blade assembly 122 rotates about a first center axis O in a first direction, the second blade assembly 122 drives the first blade assembly 122 A paddle assembly 120 rotates about the first center axis O toward the first direction; the first paddle assembly 120 may be turned toward the second paddle assembly 122 toward the second center axis.
  • the second direction is rotated, and the first direction and the second direction are opposite to each other.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Toys (AREA)

Abstract

L'invention concerne un ensemble hélice, un ensemble d'alimentation et un véhicule aérien sans pilote. L'ensemble hélice (10) comprend une hélice (12), l'hélice (12) comprenant un premier ensemble pale (120) ; un second ensemble pale (122) est installé de façon mobile au niveau du premier ensemble pale (120) ; lorsque le second ensemble pale (122) tourne dans une première direction autour d'un premier axe central, le second ensemble pale (122) entraîne le premier ensemble pale (120) à tourner dans la première direction autour du premier axe central ; et le premier ensemble pale (120) peut tourner, par rapport au second ensemble pale (122), dans une seconde direction autour d'un second axe central, la première direction et la seconde direction étant agencées de manière opposée. Au moyen de la configuration, le premier ensemble pale peut tourner par rapport au second ensemble pale de façon à plier ou déplier l'hélice, de telle sorte que l'ensemble hélice occupe un petit espace lorsqu'il est transporté et qu'il ne soit pas facilement cassé.
PCT/CN2019/097335 2018-08-10 2019-07-23 Ensemble hélice, ensemble d'alimentation et véhicule aérien sans pilote WO2020029796A1 (fr)

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Application Number Priority Date Filing Date Title
CN201810908195.8A CN108750075B (zh) 2018-08-10 2018-08-10 一种螺旋桨组件、动力组件及无人飞行器
CN201810908195.8 2018-08-10

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WO2020029796A1 true WO2020029796A1 (fr) 2020-02-13

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WO (1) WO2020029796A1 (fr)

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EP3797070A4 (fr) * 2018-06-13 2022-03-09 Wing Aviation LLC Pales d'hélice à montage concentrique pliables pour réduction de traînée

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CN108750075B (zh) * 2018-08-10 2024-04-12 深圳市道通智能航空技术股份有限公司 一种螺旋桨组件、动力组件及无人飞行器
CN111086640A (zh) * 2020-03-06 2020-05-01 国网福建省电力有限公司三明供电公司 基于视觉识别的自动巡检无人机
CN112607003B (zh) * 2020-11-25 2023-06-20 常州市长昊机械有限公司 一种易收纳式航空叶片

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