Motor

Patent metadata

Field	Value
Publication number	US-9941765-B2
Application number	US-201313890904-A
Country	US
Kind code	B2
Filing date	May 9, 2013
Priority date	May 9, 2012
Publication date	Apr 10, 2018
Grant date	Apr 10, 2018

Abstract

Disclosed is a motor, the motor according to exemplary embodiments of the present disclosure including an insulator body coupled to a stator core wound with a plurality of coils applied with powers of mutually different polarities to prevent the coil and the stator coil from being short-circuited, a terminal housing coupling unit integrally formed with the insulator body to be coupled to a terminal housing supplying an outside power by being circumferentially protruded, and a coil guide unit formed at the terminal housing coupling unit to prevent coils connected to a terminal of each polarity installed at the terminal housing from being short-circuited.

First claim

What is claimed is:

1. A motor, the motor comprising:
a motor housing; a stator arranged on the motor housing; and a rotor arranged at a center of the stator,
wherein the rotor includes:
a rotation shaft;
a core member formed with injection resin and comprising a through hole that the rotation shaft passes; and
a ring-shaped ferrite magnetic member coupled to an outside of the core member to be magnetized with polar anisotropy and comprising a support rib accommodation groove formed at an upper surface of the ring-shaped ferrite magnetic member;
wherein the core member includes a body disposed between the rotation shaft and the ring-shaped ferrite magnetic member and a support rib formed integrally with the body and disposed at the support rib accommodation groove,
wherein a largest length in the axial direction of the core member is equal to a largest length in the axial direction of the ring-shaped ferrite member,
wherein a length of the support rib in the radial direction is equal to a radial length of the ring-shaped ferrite magnetic member,
wherein an entire radial length of the support rib accommodation groove in the radial direction is equal to the radial length of the ring-shaped ferrite magnetic member,
wherein the support rib accommodation groove includes a side surface inclined from a upper surface of the ring-shaped ferrite magnetic member to a lower surface of the ring-shaped ferrite magnetic member and a bottom surface formed horizontally with the upper surface of the ring-shaped ferrite magnetic member, and
wherein the support rib includes a first surface in contact with the bottom surface, a second surface in contact with the side surface, and a third surface disposed coplanar with a top surface of the core member.

2. The motor of claim 1 , wherein each of the core member and the ferrite magnetic member takes a shape of a cylinder.

3. The motor of claim 1 , wherein the ring-shaped ferrite magnetic member has S poles and N poles alternately arranged at a periphery of the core member.

4. The motor of claim 1 , wherein the core member is formed with any one material of PPS (Polyphenylene Sulfide) and PA9T (Polyamide 9T).

5. The motor of claim 1 , wherein a height and a depth of the support rib and those of the support rib accommodation groove correspond to each other in size, respectively.

6. The motor of claim 1 , wherein the support rib and the support rib accommodation groove are symmetrically formed with respect to the rotation shaft.

7. The motor of claim 1 , wherein the support rib and the support rib accommodation groove are arranged at a 90° interval with respect to a circumference of the rotation shaft.

Assignees

• Lg Innotek Co Ltd

Inventors

• Park Young Il
• Yu Byeong Jong

Classifications

• H02K1/2733 Primary

  Annular magnets · CPC title

• H02K1/28

  Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures · CPC title

• H02K3/34

  between conductors or between conductor and core, e.g. slot insulation · CPC title

• H02K3/522

  for generally annular cores with salient poles · CPC title

• H02K3/38 Primary

  around winding heads, equalising connectors, or connections thereto · CPC title