Propeller, propeller kit, power assembly, power kit and unmanned aerial vehicle

Patent metadata

Field	Value
Publication number	US-11801935-B2
Application number	US-202217813155-A
Country	US
Kind code	B2
Filing date	Jul 18, 2022
Priority date	Dec 29, 2017
Publication date	Oct 31, 2023
Grant date	Oct 31, 2023

Abstract

A propeller, a propeller kit, a power assembly, a power kit and an unmanned aerial vehicle (UAV). The propeller includes a hub and at least two blades connected to the hub. The hub is detachably mounted on a corresponding drive apparatus by a mounting member corresponding to the hub, so that the propeller is mounted on the corresponding drive apparatus. A surface, facing the mounting member, of the hub is provided with a first fitting portion. A surface, facing the hub, of the mounting member is provided with a second fitting portion corresponding to the first fitting portion. The first fitting portion matches the second fitting portion. In the foregoing manner, a user can be prevented from incorrectly mounting a forward propeller and a counter-rotating propeller during the use of a quick-detachable propeller in the embodiments of the present application.

First claim

What is claimed is:

1. An unmanned aerial vehicle (UAV), comprising a power kit, wherein the power kit comprises: a first drive apparatus, a second drive apparatus, a first mounting member, a second mounting member and a propeller kit; the propeller kit comprises a first propeller and a second propeller, one of the first propeller and the second propeller being a forward propeller, the other being a counter-rotating propeller, wherein
the first propeller comprises a first hub and at least two blades connected to the first hub, the first hub being detachably mounted on the first drive apparatus by the first mounting member, a surface, facing the first mounting member, of the first hub being provided with a first fitting portion, a surface, facing the first hub, of the first mounting member being provided with a second fitting portion corresponding to the first fitting portion, the first fitting portion matching the second fitting portion;
the second propeller comprises a second hub and at least two blades connected to the second hub, the second hub being detachably mounted on the second drive apparatus by the second mounting member, a surface, facing the second mounting member, of the second hub being provided with a third fitting portion, a surface, facing the second hub, of the second mounting member being provided with a fourth fitting portion corresponding to the third fitting portion, the third fitting portion matching the fourth fitting portion; and
the first fitting portion does not match the fourth fitting portion, to prevent the first propeller from being mounted on the second drive apparatus by the second mounting member; and
the third fitting portion does not match the second fitting portion, to prevent the second propeller from being mounted on the first drive apparatus by the first mounting member; and
the first fitting portion is a first boss, the second fitting portion is a first groove, the third fitting portion is a second boss, the fourth fitting portion is a second groove, when the first propeller is mounted on the first drive apparatus, the first boss being inserted in the first groove, when the second propeller is mounted on the second drive apparatus, the second boss being inserted in the second groove; or
the first fitting portion is a first groove, the second fitting portion is a first boss, the third fitting portion is a second groove and the fourth fitting portion is a second boss, when the first propeller is mounted on the first drive apparatus, the first boss being inserted in the first groove, when the second propeller is mounted on the second drive apparatus, the second boss being inserted in the second groove;
the first mounting member is fixedly mounted on the first drive apparatus, the first propeller being detachably mounted on the first drive apparatus by the first mounting member;
the second mounting member is fixedly mounted on the second drive apparatus, the second propeller being detachably mounted on the second drive apparatus by the second mounting member; and
in the first drive apparatus and the second drive apparatus, the rotational direction of the drive apparatus corresponding to the forward propeller is the clockwise direction and the rotational direction of the drive apparatus corresponding to the counter-rotating propeller is the counterclockwise direction.

2. The UAV according to claim 1 , wherein a first clamping member extends from the surface, facing the first mounting member, of the first hub, the first clamping member and the first mounting member being connected by a clamping fit; and
a second clamping member extends from the surface, facing the second mounting member, of the second hub, the second clamping member and the second mounting member being connected by a clamping fit.

3. The UAV according to claim 2 , wherein when the first clamping member and the first mounting member are connected by the clamping fit, the first boss is inserted in the first groove to reserve a space for the clamping fit between the first clamping member and the first mounting member; and when the second clamping member and the second mounting member are connected by the clamping fit, the second boss is inserted in the second groove to reserve a space for the clamping fit between the second clamping member and the second mounting member; and
when the first clamping member and the second mounting member are connected by the clamping fit, the first fitting portion abuts the fourth fitting portion, to prevent the clamping fit between the first clamping member and the second mounting member; and when the second clamping member and the first mounting member are connected by the clamping fit, the third fitting portion abuts the second fitting portion, to prevent the clamping fit between the second clamping member and the first mounting member.

4. The UAV according to claim 1 , wherein both a central axis of the first boss and a central axis of the first groove coincide with a rotational axis of the first drive apparatus; and both a central axis of the second boss and a central axis of the second groove coincide with a rotational axis of the second drive apparatus.

5. The UAV according to claim 1 , wherein
the first boss and the first groove fit in shape and fit in size and the second boss and the second groove fit in shape and fit in size; and
the first boss and the second groove do not fit in shape and do not fit in size and the second boss and the first groove do not fit in shape and do not fit in size.

6. The UAV according to claim 1 , wherein the cross sections of the first boss, the first groove, the second boss and the second groove are all annular.

7. The UAV according to claim 6 , wherein
the thickness of the first boss is T1 and the outer diameter is D1; and the depth of the first groove is H1 and the inner diameter is D3; and
the depth of the second boss is T2 and the outer diameter is D2; and the depth of the second groove is H2 and the inner diameter is D4, wherein
T1=H1>T2=H2 and D1=D3<D2=D4; or
T1=H1<T2=H2 and D1=D3>D2=D4.

8. The UAV according to claim 1 , wherein the first mounting member is fixedly mounted on the first drive apparatus, the first propeller being detachably mounted on the first drive apparatus by the first mounting member;
the second mounting member is fixedly mounted on the second drive apparatus, the second propeller being detachably mounted on the second drive apparatus by the second mounting member; and
in the first drive apparatus and the second drive apparatus, the rotational direction of the drive apparatus corresponding to a forward propeller is the clockwise direction and the rotational direction of the drive apparatus corresponding to a counter-rotating propeller is the counterclockwise direction.

Assignees

• Autel Robotics Co Ltd

Inventors

• Zhang Hailang
• Sun Wei
• Luo Dongdong

Classifications

• B64C27/473 Primary

  Constructional features · CPC title

• B64C11/02 Primary

  Hub construction · CPC title

• B64U30/292

  Rotors or rotor supports specially adapted for quick release · CPC title

• B64C39/024

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

• F01D5/30

  Fixing blades to rotors; Blade roots {; Blade spacers} · CPC title