Coupler and Motor Having the Same

Patent metadata

Field	Value
Publication number	US-2016352184-A1
Application number	US-201615166690-A
Country	US
Kind code	A1
Filing date	May 27, 2016
Priority date	May 28, 2015
Publication date	Dec 1, 2016
Grant date	—

Abstract

A motor and a coupler disposed therein are provided. The motor includes a housing, a stator disposed in the housing, a rotor rotatably disposed inside the stator, a rotating shaft which integrally rotates with the rotor, a bearing which supports the rotating shaft, a bracket disposed at an upper portion of the housing, wherein the bearing is mounted in the bracket, and a coupler disposed at an upper end portion of the rotating shaft which passes through and protrudes from the bracket, wherein the coupler is in contact with the bracket due to a pressure generated when an external system is coupled with the coupler. Accordingly, damage to the bearing and noise occurrence are prevented in advance in the motor including the coupler.

First claim

What is claimed is:

1 . A motor comprising:
a housing; a stator disposed in the housing; a rotor rotatably disposed inside the stator; a rotating shaft which integrally rotates with the rotor; a bearing which supports the rotating shaft; a bracket disposed at an upper portion of the housing, wherein the bearing is mounted in the bracket; and a coupler disposed at an upper end portion of the rotating shaft which passes through and protrudes from the bracket, wherein the coupler is in contact with the bracket by a pressure generated when an external system is coupled with the coupler.

2 . The motor of claim 1 , wherein the coupler includes:
an outer body with which the external system is coupled; an inner body which protrudes downward from the outer body, wherein a second engaging portion to be coupled to the rotating shaft is formed in the inner body; and a support protrusion formed to extend and protrude from a lower portion of the outer body, wherein the support protrusion is in contact with the bracket by e pressure generated when the external system is coupled with the coupler.

3 . The motor of claim 2 , wherein the support protrusion is disposed separately from the second engaging portion.

4 . The motor of claim 3 , wherein an end of the support protrusion is formed to protrude further than an end of the second engaging portion.

5 . The motor of claim 4 , wherein a disposing position of the support protrusion corresponds to a surface of the bracket besides a portion where the bearing is disposed in a perpendicularly downward direction of the support protrusion.

6 . The motor of claim 2 , wherein the outer body includes a main body in a cylindrical shape and a first engaging portion formed to protrude inward from the main body.

7 . The motor of claim 6 , wherein the support protrusion is formed to extend from a lower portion of the main body.

8 . A coupler coupled to a rotating shaft of a motor, comprising:
an outer body including a main body in a cylindrical shape and a first engaging portion formed to protrude inward from the main body; an inner body including a coupling portion which is one side of the inner body and is coupled to a first engaging portion, and a second engaging portion formed to protrude in an axial direction of the rotating shaft from the other side; and a support protrusion formed to extend from the main body.

9 . The coupler of claim 8 , wherein the support protrusion is disposed separately from the second engaging portion.

10 . The coupler of claim 9 , wherein an end of the support protrusion is formed to protrude more than an end of the second engaging portion.

Assignees

• Lg Innotek Co Ltd

Inventors

• Kim Yong Joo

Classifications

• H02K5/16

  Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields (magnetic bearings H02K7/09) · CPC title

• H02K7/003 Primary

  Couplings; Details of shafts (means for mounting rotors on shafts H02K1/28) · CPC title

• F16D1/02 Primary

  for connecting two abutting shafts or the like · CPC title

• H02K5/24

  specially adapted for suppression or reduction of noise or vibrations · CPC title