Motor

Patent metadata

Field	Value
Publication number	US-2018076684-A1
Application number	US-201715703369-A
Country	US
Kind code	A1
Filing date	Sep 13, 2017
Priority date	Sep 13, 2016
Publication date	Mar 15, 2018
Grant date	—

Abstract

A motor includes a motor housing, a rotating shaft assembly that includes a rotor mounted to the rotating shaft, an impeller connected to the rotating shaft, and an impeller cover that surrounds an outer circumference of the impeller. The impeller cover defines an air inlet. The motor further includes a stator that is located within the motor housing and that surrounds at least a portion of the rotor, a bearing mounted to the rotating shaft, and an elastic mesh having a plurality of pores. The elastic mesh is disposed between the motor housing and the bearing.

First claim

What is claimed is:

1 . A motor comprising:
a motor housing; a rotating shaft assembly that includes a rotating shaft and a rotor mounted to the rotating shaft; an impeller connected to the rotating shaft; an impeller cover that surrounds an outer circumference of the impeller, the impeller cover defining an air inlet; a stator that is located within the motor housing and that surrounds at least a portion of the rotor; a bearing mounted to the rotating shaft; and an elastic mesh having a plurality of pores, the elastic mesh being disposed between the motor housing and the bearing.

2 . The motor according to claim 1 , wherein the bearing comprises:
an inner rim fixed to the rotating shaft; an outer rim spaced apart from the inner rim; and a rolling member disposed between the inner rim and the outer rim, wherein the motor housing includes a hollow part that has an internal diameter greater than an external diameter of the outer rim of the bearing, and wherein the elastic mesh is disposed between the hollow part and the outer rim of the bearing.

3 . The motor according to claim 2 , wherein the elastic mesh contacts the outer rim and the hollow part.

4 . The motor according to claim 1 , wherein the motor housing comprises:
a body part that defines at least one through-hole facing the elastic mesh; and a hollow part that protrudes from the body part and that surrounds an outer circumference of the elastic mesh.

5 . The motor according to claim 1 , wherein the motor housing comprises:
a body part; and a hollow part that protrudes from the body part and that surrounds an outer circumference of the elastic mesh, wherein the bearing comprises:
an inner rim fixed to the rotating shaft,
an outer rim spaced apart from the inner rim, and
a rolling member disposed between the inner rim and the outer rim, and
wherein at least a portion of the elastic mesh is disposed between an inner circumference of the hollow part and an outer circumference of the outer rim.

6 . The motor according to claim 5 , further comprising a wave washer that is disposed between the outer rim and the body part and spaced apart from the elastic mesh,
wherein the body part includes a mounting projection that protrudes from the body part and that seats the elastic mesh.

7 . The motor according to claim 6 , wherein the mounting projection surrounds an outer circumference of the wave washer.

8 . The motor according to claim 6 , wherein the mounting projection has a height greater than a height of the wave washer.

9 . The motor according to claim 6 , wherein the body part includes a wave washer mounting surface that seats the wave washer, and
wherein the mounting projection is stepped from the wave washer mounting surface.

10 . The motor according to claim 5 , wherein the elastic mesh comprises:
a first elastic mesh part disposed between the inner circumference of the hollow part and the outer circumference of the outer rim; and a second elastic mesh part bent from the first elastic mesh part and disposed between the outer rim and the body part.

11 . The motor according to claim 10 , wherein the body part defines a through-hole that faces at least one of the first elastic mesh part or the second elastic mesh part.

12 . The motor according to claim 1 , wherein the elastic mesh comprises a metal wire mesh in which at least one metal wire has a shape including one or more of curved sections.

13 . The motor according to claim 1 , wherein the elastic mesh has a hollow cylindrical shape, and
wherein each pore of the plurality of pores has an opening in a radial direction of the elastic mesh.

14 . The motor according to claim 1 , wherein the elastic mesh has a height greater than a height of the bearing.

15 . The motor according to claim 1 , further comprising an O-ring that is fixed to the rotating shaft, that is located between the elastic mesh and the rotating shaft, and that supports the bearing,
wherein the O-ring has an external diameter less than an internal diameter of the elastic mesh to thereby define a gap between an outer circumference of the O-ring and the elastic mesh.

16 . The motor according to claim 1 , wherein the elastic mesh is configured to deform in a radial direction based on the rotating shaft becoming offset from a center axis of the bearing.

17 . The motor according to claim 4 , wherein the elastic mesh is configured to communicate air through the through-hole and to discharge air to an outside of the motor housing.

18 . The motor according to claim 6 , wherein the mounting projection has a first surface that contacts the elastic mesh and a second surface that contacts the wave washer.

19 . The motor according to claim 10 , wherein the second elastic mesh part contacts both of the body part and the outer rim of the bearing.

20 . The motor according to claim 10 , wherein the second elastic mesh part defines a space between the body part and the inner rim of the bearing and is configured to deform in a direction parallel with the rotating shaft.

Assignees

• Lg Electronics Inc

Inventors

• Hwang Eunji
• Kim Sunggi
• Ban Hangjin

Classifications

• H02K5/1732 Primary

  radially supporting the rotary shaft at both ends of the rotor (H02K5/1737 takes precedence) · CPC title

• H02K9/06

  with fans or impellers driven by the machine shaft · CPC title

• H02K2213/09

  Machines characterised by the presence of elements which are subject to variation, e.g. adjustable bearings, reconfigurable windings, variable pitch ventilators · CPC title

• A47L9/22

  Mountings for motor fan assemblies · CPC title

• H02K5/207

  with openings in the casing specially adapted for ambient air · CPC title