Locking mechanism, propeller, motor, propulsion system assembly, and aircraft

Patent metadata

Field	Value
Publication number	US-11014647-B2
Application number	US-201916395464-A
Country	US
Kind code	B2
Filing date	Apr 26, 2019
Priority date	Oct 28, 2016
Publication date	May 25, 2021
Grant date	May 25, 2021

Abstract

A propulsion system assembly includes a propeller and a motor configured to drive the propeller to rotate. The propeller includes one of a first body and a second body. The motor comprises the other one of the first body and the second body. The propulsion system assembly also includes a locking mechanism configured to detachably connecting the first body and the second body. The locking mechanism includes a locking member and a position limiting lock catch. The locking member is configured to lock the first body and the second body. The locking member includes locking parts located at at least two sides of the locking member. When the locking parts of the locking member rotate to a locking position, the position limiting lock catch is mounted to a side of the locking parts, to restrain the locking member from rotating relative to the first body.

First claim

What is claimed is:

1. A propulsion system assembly, comprising:
a propeller;
a motor configured to drive the propeller to rotate,
wherein the propeller comprises one of a first body and a second body,
wherein the motor comprises the other one of the first body and the second body, and
a locking mechanism configured to detachably connecting the first body and the second body, the locking mechanism comprising:
a locking member; and
a position limiting lock catch,
wherein the locking member is configured to lock the first body and the second body,
wherein the locking member comprises locking parts located at at least two sides of the locking member, and
wherein when the locking parts of the locking member rotate to a locking position, the position limiting lock catch is mounted to a side of the locking parts, to restrain the locking member from rotating relative to the first body.

2. The propulsion system assembly of claim 1 , wherein the position limiting lock catch is configured to be detachably mounted to the side of the locking parts, and is detachable manually.

3. The propulsion system assembly of claim 2 , wherein
the locking member is provided with a position limiting block, and
the position limiting lock catch is provided with a position limiting groove configured to snap fit with the position limiting block.

4. The propulsion system assembly of claim 3 , wherein a location of the position limiting block on the locking member does not coincide with locations of the locking parts.

5. The propulsion system assembly of claim 2 , wherein the locking parts comprise a first lock catch end configured to lock the first body, and a second lock catch end configured to lock the second body.

6. The propulsion system assembly of claim 5 , wherein
the first lock catch end comprises a first groove, and
the first body comprises a first raised portion configured to fixedly fit with the first groove.

7. The propulsion system assembly of claim 6 , wherein
the second lock catch end comprises a second groove, and
the second body comprises a second raised portion configured to slidably fit with the second groove, such that the locking member is rotatable with respect to the second body.

8. The propulsion system assembly of claim 1 , wherein
the motor comprises an outer rotor, and
the second body is the outer rotor of the motor or an adapter provided on the outer rotor of the motor.

9. The propulsion system assembly of claim 8 ,
wherein the propeller comprises:
a propeller hub; and
a blade mounted to the propeller hub, and

wherein the first body is the outer rotor of the motor or the adapter provided on the outer rotor of the motor.

10. The propulsion system assembly of claim 1 , wherein
the motor comprises an outer rotor, and
the first body is the outer rotor of the motor or an adapter provided on the outer rotor of the motor.

11. The propulsion system assembly of claim 10 ,
wherein the propeller comprises:
a propeller hub; and
a blade mounted to the propeller hub, and

wherein the second body is the propeller hub of the propeller.

12. The propulsion system assembly of claim 1 , wherein the propeller hub comprises a driving groove configured to fit with a driving shaft of the motor.

13. An aircraft, comprising:
an aircraft body;
a propulsion system assembly, comprising:
a propeller;
a motor configured to drive the propeller to rotate; and
a locking mechanism configured to detachably lock the propeller to the motor,
wherein the propeller comprises one of a first body and a second body, and the motor comprises the other one of the first body and the second body, and
wherein the locking mechanism is configured to detachably connect the first body and the second body, the locking mechanism comprising:
a locking member; and
a position limiting lock catch,
wherein the locking member is configured to lock the first body and the second body,
wherein the locking member comprises locking parts located at at least two sides of the locking member, and
wherein when the locking parts of the locking member rotate to a locking position, the position limiting lock catch is mounted to a side of the locking parts, to restrain the locking member from rotating relative to the first body.

14. The aircraft of claim 13 , wherein
the locking member is provided with a position limiting block, and
the position limiting lock catch is provided with a position limiting groove configured to snap fit with the position limiting block.

15. The aircraft of claim 14 , wherein a location of the position limiting block on the locking member does not coincide with locations of the locking parts.

16. The aircraft of claim 13 , wherein
the locking parts comprise a first lock catch end configured to lock the first body, and a second lock catch end configured to lock the second body,
the first lock catch end comprises a first groove, and
the first body comprises a first raised portion configured to fixedly fit with the first groove.

17. The aircraft of claim 16 , wherein the second lock catch end comprises a second groove, and the second body comprises a second raised portion configured to slidably fit with the second groove, such that the locking member is rotatable with respect to the second body.

18. The aircraft of claim 13 , wherein the motor comprises an outer rotor, the second body is the outer rotor of the motor or an adapter provided on the outer rotor of the motor.

19. The aircraft of claim 18 , wherein
wherein the propeller comprises:
a propeller hub; and
a blade mounted to the propeller hub, and

wherein the first body is the outer rotor of the motor or the adapter provided on the outer rotor of the motor, and the second body is the propeller hub.

20. The aircraft of claim 13 , wherein
the motor comprises an outer rotor,
the first body is the outer rotor of the motor or an adapter provided on the outer rotor of the motor, and
the propeller hub comprises a driving groove configured to fit with a driving shaft of the motor.

Assignees

• Sz Dji Technology Co Ltd

Inventors

• Jiang Bin
• Deng Tao
• Ou di

Classifications

• B64U2101/30

  for imaging, photography or videography · CPC title

• B64U10/14

  with four distinct rotor axes, e.g. quadcopters · CPC title

• B64U30/29

  Constructional aspects of rotors or rotor supports; Arrangements thereof · CPC title

• B64U80/50

  the UAVs being disassembled · CPC title

• B64U50/23

  with each propulsion means having an individual motor · CPC title