Rolling bearing and motor having the same

Patent metadata

Field	Value
Publication number	US-10801547-B2
Application number	US-201916274793-A
Country	US
Kind code	B2
Filing date	Feb 13, 2019
Priority date	Sep 9, 2016
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

A rolling bearing includes an inner rim fixed to a rotating shaft, an outer rim spaced apart from the inner rim, a rolling member disposed between the inner rim and the outer rim, and an elastic mesh defining a plurality of through-holes and surrounding an outer circumferential surface of the outer rim.

First claim

What is claimed is:

1. A rolling bearing comprising:
an inner rim fixed to a rotating shaft;
an outer rim spaced apart from the inner rim;
a rolling member disposed between the inner rim and the outer rim; and
an elastic mesh that has a hollow cylindrical shape, that defines a plurality of through-holes, and that faces and surrounds an outer circumferential surface of the outer rim,
wherein the elastic mesh comprises a metal wire mesh comprising at least one metal wire,
wherein the at least one metal wire comprises an inner contact part directly coming in contact with of the outer circumferential surface the outer rim, and
wherein an internal diameter of the elastic mesh is less than an external diameter of the outer rim such that the outer rim is press-fitted into the elastic mesh.

2. The rolling bearing according to claim 1 , wherein the at least one metal wire has one or more of curved portions including the inner contact part.

3. The rolling bearing according to claim 1 , wherein an axial height of the elastic mesh is greater than an axial height of the outer rim.

4. The rolling bearing according to claim 1 , wherein the elastic mesh has an end part not facing the outer rim, and
wherein the plurality of through-holes comprise a through-hole formed in the end part of the elastic mesh.

5. The rolling bearing according to claim 1 , wherein the elastic mesh includes:
a contact part contacting the outer rim; and
a spacing part spaced apart from the outer rim, the contact part and the space part being alternately located along the outer rim, and
wherein the through-holes are defined in at least one of the contact part and the spacing part.

6. The rolling bearing according to claim 1 , wherein the elastic mesh comprises:
an inner mesh part located at an innermost side in a radial direction, the inner mesh part contacting the outer circumferential surface of the outer rim; and
an outer mesh part located at an outermost side in the radial direction, and
wherein the through-holes are defined in each of the inner mesh part and the outer mesh part.

7. The rolling bearing according to claim 1 , wherein the plurality of through-holes comprise a first through-hole open in a radial direction, a second through-hole open in an axial direction, and a third through-hole open in an oblique direction between the radial direction and the axial direction.

8. A motor comprising:
a motor body;
a bracket installed within the motor body; and
at least one rolling bearing that supports a rotating shaft located in the motor body,
wherein at least one of the motor body and the bracket comprises a rolling bearing housing part that supports the rolling bearing,
wherein the rolling bearing comprises:
an inner rim fixed to the rotating shaft,
an outer rim spaced apart from the inner rim,
a rolling member disposed between the inner rim and the outer rim, and
an elastic support structure that is porous and that surrounds an outer circumferential surface of the outer rim, and

wherein the rolling bearing housing part contacts the elastic support structure to thereby support the elastic support structure,
wherein the elastic support structure comprises an elastic mesh that has a hollow cylindrical shape, that defines a plurality of through-holes, and that is disposed between the outer circumferential surface of the outer rim and an inner circumferential surface of the rolling bearing housing part, the elastic mesh comprising at least one metal wire,
wherein the at least one metal wire comprises an inner contact part directly coming in contact with the outer circumferential surface the outer rim,
wherein the elastic mesh faces the outer circumferential surface of the outer rim and the inner circumferential surface of the rolling bearing housing part, and
wherein an internal diameter of the elastic mesh is less than an external diameter of the outer rim such that the outer rim is press-fitted into the elastic mesh.

9. The motor according to claim 8 , wherein the at least one metal wire has one or more of curved portions including the inner contact part.

10. The motor according to claim 8 , wherein the at least one metal wire comprises an outer contact part directly coming in contact with of the inner circumferential surface of the rolling bearing housing part.

11. The motor according to claim 8 , wherein the elastic mesh has an first end part facing an outside of the rolling bearing housing part and an second part facing an inner surface of the rolling bearing housing part.

12. The motor according to claim 8 , wherein an axial height of the elastic mesh is greater than an axial height of the outer rim.

13. The motor according to claim 8 , wherein the elastic mesh includes:
a contact part contacting the outer rim; and
a spacing part spaced apart from the outer rim, the contact part and the spacing part being alternately located along the outer rim,
wherein the spacing part contacts the rolling bearing housing part, and
wherein the plurality of through-holes are defined in at least one of the contact part and the spacing part.

14. The motor according to claim 8 , wherein the elastic mesh further comprises:
an inner mesh part located at an innermost side in a radial direction, the inner mesh part contacting the outer circumferential surface of the outer rim; and
an outer mesh part located at an outermost side in the radial direction, the outer mesh part contacting the rolling bearing housing part, and
wherein the plurality of through-holes are defined in each of the inner mesh part and the outer mesh part.

15. The motor according to claim 8 , wherein the plurality of through-holes face each of the outer circumferential surface of the outer rim and the inner circumferential surface of the rolling bearing housing part.

16. The motor according to claim 8 , wherein the elastic mesh has a thickness equal to or greater than a gap defined between the outer circumferential surface of the outer rim and the inner circumferential surface of the rolling bearing housing part, the elastic mesh being configured to be press-fitted into the gap.

Assignees

• Lg Electronics Inc

Inventors

• Hwang Eunji
• Kim Sunggi
• Ban Hangjin
• Kim Donghan
• Kim Byungjik

Classifications

• F16C33/586

  outside the space between the races, e.g. end faces or bore of inner ring · CPC title

• F16C33/583

  Details of specific parts of races · CPC title

• F16C19/02

  with bearing balls essentially of the same size in one or more circular rows · CPC title

• F16C2380/26

  Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators · CPC title

• F16C19/06

  with a single row or balls · CPC title