Drone motor and drone comprising same

Patent metadata

Field	Value
Publication number	US-11180247-B2
Application number	US-201716307903-A
Country	US
Kind code	B2
Filing date	Jun 9, 2017
Priority date	Jun 9, 2016
Publication date	Nov 23, 2021
Grant date	Nov 23, 2021

Abstract

One embodiment discloses a drone motor and a drone comprising the same, the drone motor comprising: a rotating shaft; a stator comprising a hole into which the rotating shaft is inserted; and a rotor arranged on the outer side of the stator, wherein a support member is arranged between the rotating shaft and the stator, and a bearing is arranged between the support member and the stator, wherein the support member comprises a body part which surrounds the rotating shaft, and a flange part which couples with the rotor.

First claim

The invention claimed is:

1. A drone motor comprising:
a rotating shaft;
a stator including a hole into which the rotating shaft is inserted; and
a rotor disposed at an outside of the stator, wherein the rotor includes a rotor core facing an outer circumferential surface of the stator, a plurality of magnets disposed on an inner surface of the rotor core, and a cover configured to cover the rotor core,
wherein a support member is disposed between the rotating shaft and the stator,
a bearing is disposed between the support member and the stator, and
the support member includes a body part configured to surround the rotating shaft and a flange part coupled to the rotor,
wherein the cover includes a first groove in which the flange part is accommodated, and
wherein the flange part includes at least one first protrusion configured to protrude toward the cover and inserted into a bottom surface of the first groove.

2. The drone motor of claim 1 , wherein:
the bearing includes a first bearing disposed between the rotating shaft and the stator, and a second bearing disposed between the rotating shaft and the stator; and
the support member includes a first support member including a first body part disposed between the rotating shaft and the first bearing and a first flange part coupled to the rotor, and a second support member including a second body part disposed between the rotating shaft and the second bearing and a second flange part.

3. The drone motor of claim 1 , further comprising a housing in which the stator is accommodated, wherein the housing includes a bottom part and a protruding part which axially protrudes from the bottom part and into which the stator is inserted.

4. The drone motor of claim 3 , wherein:
the protruding part includes a first hole formed in an axial direction thereof;
the rotating shaft passes through the first hole; and
the first bearing and the second bearing are disposed in the first hole.

5. The drone motor of claim 4 , wherein the first hole includes a step by which the first bearing is spaced apart from the second bearing in the axial direction.

6. The drone motor of claim 5 , wherein:
the first support member is inserted into one side of the first hole to fix the first bearing in the first hole; and
the second support member is inserted into the other side of the first hole to fix the second bearing in the first hole.

7. The drone motor of claim 2 , wherein:
a diameter of the first flange part is greater than an inner diameter of the first bearing and smaller than an outer diameter of the first bearing; and
a diameter of the second flange part is greater than an inner diameter of the second bearing and smaller than an outer diameter of the second bearing.

8. The drone motor of claim 2 , wherein:
the cover includes a plurality of blades and holes disposed between the blades.

9. A drone comprising:
a main body;
a plurality of motors connected to the main body; and
a blade part coupled to the plurality of motors,
wherein the motor includes a rotating shaft, a stator including a hole into which the rotating shaft is inserted, and a rotor disposed at an outside of the stator,
a support member is disposed between the rotating shaft and the stator,
a bearing is disposed between the support member and the stator, and
the support member includes a body part configured to surround the rotating shaft and a flange part coupled to the rotor,
wherein the rotor includes a rotor core facing an outer circumferential surface of the stator, a plurality of magnets disposed on an inner surface of the rotor core, and a cover configured to cover the rotor core,
wherein the cover includes a first groove in which the flange part is accommodated, and
wherein the flange part includes at least one first protrusion configured to protrude toward the cover and inserted into a bottom surface of the first groove.

Assignees

• Lg Innotek Co Ltd

Inventors

• Park Young Dae

Classifications

• B64C27/12 Primary

  Rotor drives · CPC title

• B64C27/14 Primary

  Direct drive between power plant and rotor hub · CPC title

• B64U50/13

  using external fans or propellers · CPC title

• B64U30/29

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

• B64U10/16

  with five or more distinct rotor axes, e.g. octocopters · CPC title