Motor and unmanned aerial vehicle

Patent metadata

Field	Value
Publication number	US-11447258-B2
Application number	US-201916405507-A
Country	US
Kind code	B2
Filing date	May 7, 2019
Priority date	Nov 8, 2016
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

Abstract

A motor includes a bottom and a top opposite to the bottom. The bottom is a mounting side of the motor and the bottom is inclined relative to a rotation axis of the motor.

First claim

What is claimed is:

1. A motor for driving a propeller of an unmanned aerial vehicle (UAV), comprising:
a bottom that is a mounting side of the motor mounting the motor to an arm of the UAV, a rotation axis of the propeller is coaxial with a rotation axis of the motor, and an included angle between the rotation axis of the propeller and the arm of the UAV is a fixed angle; and
a top opposite to the bottom and perpendicular to the rotation axis of the motor and perpendicular to the rotation axis of the propeller, wherein a propeller disk formed by rotation of the propeller is inclined at a first inclination angle with respect to a pitch axis of the UAV, and is inclined at a second inclination angle with respect to a roll axis of the UAV;
wherein:
the propeller is one of four propellers of the UAV;
the motor is one of four motors of the UAV that drive the four propellers, respectively;
the four motors include a first motor, a second motor, a third motor, and a fourth motor; and
the four propellers include a first propeller coupled with the first motor, a second propeller coupled with the second motor, a third propeller coupled with the third motor, and a fourth propeller coupled with the fourth motor;
the first motor and the second motor are arranged at a first side of a fuselage of the UAV, the third motor and the fourth motor are arranged at a second side of the fuselage opposite to the first side, the first motor and the second motor at the first side are inclined toward each other, and the third motor and the fourth motor at the second side are inclined toward each other; and

the first motor and the third motor are arranged close to a front of the fuselage, the second motor and the fourth motor are arranged close to a rear of the fuselage, the first motor and the third motor close to the front are inclined away from each other, and the second motor and the fourth motor close to the rear are inclined away from each other.

2. The motor of claim 1 , wherein:
the motor is an external rotor motor; or
the motor is an internal rotor motor including a drive shaft protruding from the top.

3. The motor of claim 1 , wherein:
the top is inclined at a first preset angle with respect to a first axis parallel to the bottom;
the top is inclined at a second preset angle with respect to a second axis parallel to the bottom; and
the first axis is perpendicular to the second axis.

4. The motor of claim 3 , wherein a value of the first preset angle is not equal to a value of the second preset angle.

5. The motor of claim 3 , wherein at least one of the first preset angle or the second preset angle is in a range greater than 0° and less than 10°.

6. An unmanned aerial vehicle (UAV) comprising:
a fuselage;
an arm arranged at the fuselage;
a motor including:
a bottom mounting the motor to the arm; and
a top opposite to the bottom and perpendicular to the rotation axis of the motor; and

a propeller arranged at the motor and perpendicular to the rotation axis of the motor, wherein a rotation axis of the propeller is coaxial with a rotation axis of the motor, the rotation axis of the propeller is perpendicular to the top, an included angle between the rotation axis of the propeller and the arm of the UAV is a fixed angle, and a propeller disk formed by rotation of the propeller is inclined at a first inclination angle with respect to a pitch axis of the UAV, and is inclined at a second inclination angle with respect to a roll axis of the UAV;
wherein:
the propeller is one of four propellers of the UAV;

the motor is one of four motors of the UAV that drive the four propellers, respectively;
the four motors include a first motor, a second motor, a third motor, and a fourth motor; and
the four propellers include a first propeller coupled with the first motor, a second propeller coupled with the second motor, a third propeller coupled with the third motor, and a fourth propeller coupled with the fourth motor;
the first motor and the second motor are arranged at a first side of a fuselage of the UAV, the third motor and the fourth motor are arranged at a second side of the fuselage opposite to the first side, the first motor and the second motor at the first side are inclined toward each other, and the third motor and the fourth motor at the second side are inclined toward each other; and
the first motor and the third motor are arranged close to a front of the fuselage, the second motor and the fourth motor are arranged close to a rear of the fuselage, the first motor and the third motor close to the front are inclined away from each other, and the second motor and the fourth motor close to the rear are inclined away from each other.

7. The UAV of claim 6 , wherein the bottom of the motor is parallel to an axis of the arm.

8. The UAV of claim 6 ,
wherein the arm is a first arm of a plurality of arms arranged at the fuselage;
the plurality of arms further include:
a second arm;
wherein the first arm and the second arm are arranged at two sides of the fuselage, respectively.

9. The UAV of claim 8 , wherein each of the first arm and the second arm includes:
a first support arm including a first end and a second end opposite to the first end, the first end of the first support arm connecting to the fuselage; and
a second support arm, the second end of the first support arm connecting to a middle portion of the second support arm.

10. The UAV of claim 9 , wherein the second support arm is parallel to the roll axis of the UAV.

11. The UAV of claim 9 , wherein:
the second support arm of the first arm has a first front free end and a first rear free end, and the second support arm of the second arm has a second front free end and a second rear free end; and
each of the propellers and each of the motors are arranged at one of the first front free end, the first rear free end, the second front free end, and the second rear free end.

12. The UAV of claim 11 , wherein the two motors arranged at the first front free end and the second front free end or the two motors arranged at the first rear free end and the second rear free end are arranged parallel to the pitch axis of the UAV.

13. The UAV of claim 6 , wherein:
at least one of the first inclination angle or the second inclination angle is in a range greater than 0° and less than 10°.

14. The UAV of claim 13 , wherein:
the first inclination angle is about 3°;
the second inclination angle is about 2°.

15. The UAV of claim 6 , further comprising:
a motor base arranged at and coaxial with the arm;
wherein the motor is mounted at the motor base.

16. The UAV of claim 6 , wherein the UAV is a multi-rotating-wing UAV.

17. The UAV of claim 6 , wherein:
the motor is an external rotor motor; and
the top is perpendicular to the rotation axis of the motor.

18. The UAV of claim 6 , wherein:
a value of the first inclination angle is not equal to a value of the second inclination angle.

19. The motor of claim 1 , wherein:
the bottom is inclined relative to the rotation axis of the motor and inclined relative to the rotation axis of the propeller; and
the top is inclined relative to the bottom.

Assignees

• Sz Dji Technology Co Ltd

Inventors

• Guo Xiaokai
• Lin Canlong
• Ou di

Classifications

• B64D27/402 Primary

  comprising box like supporting frames, e.g. pylons or arrangements for embracing the power plant · CPC title

• B64C27/14

  Direct drive between power plant and rotor hub · CPC title

• B64C27/08

  with two or more rotors · CPC title

• B64C2201/042

  Operations & Transport · mapped topic

• B64C2201/108

  Operations & Transport · mapped topic