Unmanned aerial vehicle

Patent metadata

Field	Value
Publication number	US-10589853-B2
Application number	US-201515565144-A
Country	US
Kind code	B2
Filing date	Jul 22, 2015
Priority date	Apr 13, 2015
Publication date	Mar 17, 2020
Grant date	Mar 17, 2020

Abstract

A technical object of the present invention is to provide an unmanned aerial vehicle capable of performing a position movement while maintaining posture stabilization. To this end, the unmanned aerial vehicle of the present invention includes: a main body unit; a plurality of propeller motors of which the rotational speed is adjusted by the main body unit; supports which extend from the main body unit in order to support the plurality of propeller motors; propellers which are axially coupled to the plurality of propeller motors and output thrust; and tilting units which tilt rotating shafts of the propellers with respect to the main body unit.

First claim

The invention claimed is:

1. An unmanned aerial vehicle comprising:
a main body unit;
a plurality of propeller motors of which the rotational speed is adjusted by the main body unit;
supports which extend from the main body unit in order to support the plurality of propeller motors;
propellers which are axially coupled to the plurality of propeller motors and output thrust; and
tilting units which tilt rotating shafts of the propellers with respect to the main body unit,
wherein the main body unit includes
a main body which defines an external appearance;
a communication module which is provided in the main body and communicates with an external remote controller; and
a control module which is provided in the main body and controls the plurality of propeller motors, the control module further includes a tilt control unit which controls the tilting units,
wherein the main body unit further includes a horizontality maintaining unit which maintains a horizontal posture of the main body unit when the unmanned aerial vehicle is in the air,
wherein the horizontality maintaining unit includes
a flywheel motor which is provided on the main body unit; and
a flywheel which is axially coupled to the flywheel motor,
wherein in response to detection of a signal, transmitted via the communication module, to move the unmanned aerial vehicle to a certain direction, the control module stops the flywheel motor and rotates the tilting units to tilt one of the tilt rotating shafts of one of the propellers with respect to the main body unit, and wherein
in response to detection of a signal to stop the unmanned aerial vehicle, the control module operates the flywheel motor to maintain the unmanned aerial vehicle in a horizontal direction.

2. The unmanned aerial vehicle of claim 1 , wherein a rotation axis of each of the tilting units is perpendicular to the rotating shaft of each of the propellers.

3. The unmanned aerial vehicle of claim 1 , wherein each of the tilting units has a single rotation axis or multiple rotation axes.

4. The unmanned aerial vehicle of claim 1 , wherein each of the tilting units is provided between each of the supports and each of the propeller motors.

5. The unmanned aerial vehicle of claim 1 , wherein each of the supports has two divided portions, and each of the tilting units is connected to each of the divided portions.

6. The unmanned aerial vehicle of claim 1 , wherein the main body unit includes:
a sensor module which is provided in the main body and includes a camera; and
a battery which is provided in the main body and supplies electric power to the communication module, the control module, and
the sensor module.

7. The unmanned aerial vehicle of claim 1 , wherein a rotation axis of the flywheel is perpendicular to an upper surface of the main body unit.

Assignees

• Korea Aerospace Res Inst

Inventors

• Lee Seon-Ho

Classifications

• F16F15/30

  Flywheels (F16F15/16, F16F15/28 take precedence; suppression of vibrations in rotating systems using elastic members or friction-damping members moving with the system, {i.e. split flywheels or single masses connected to a hub by elastic members or friction-damping members} F16F15/12; rotary-body aspects in general F16C13/00, F16C15/00) · CPC title

• B64C27/52 Primary

  Tilting of rotor bodily relative to fuselage (of see-saw type construction B64C27/43) · CPC title

• B64C39/024

  of the remote controlled vehicle type, i.e. RPV · CPC title

• B64C2201/108

  Operations & Transport · mapped topic

• B64C2201/024

  Operations & Transport · mapped topic