Motor having electromagnetic rotor

Patent metadata

Field	Value
Publication number	US-9461509-B2
Application number	US-201214362131-A
Country	US
Kind code	B2
Filing date	Nov 2, 2012
Priority date	Jan 2, 2012
Publication date	Oct 4, 2016
Grant date	Oct 4, 2016

Abstract

Disclosed is a motor including: a rotor housing; a stator assembly located inside the rotor housing; a first core located inside the stator assembly; a second core located at the center of the rotor housing; and a coil housing located inside the rotor housing and having a space portion formed at the inside thereof.

First claim

The invention claimed is:

1. A motor comprising:
a rotor housing;
a stator assembly located inside the rotor housing;
a first core located inside the stator assembly;
a second core located at a center of the rotor housing; and
a coil housing being symmetrically located inside of the rotor housing, the coil housing having an upper portion, a lower portion, and an outside wall and an inside wall, wherein
a space portion is formed at an inside portion of the coil housing thereof,
wherein the first core is fixed to a first core holder coupled to a coupling portion bushing of the stator assembly.

2. A motor comprising:
a rotor housing;
a stator assembly located inside the rotor housing;
a first core located inside the stator assembly;
a second core located at a center of the rotor housing; and
a coil housing being symmetrically located inside of the rotor housing, the coil housing having an upper portion, a lower portion, and an outside wall and an inside wall,
wherein a space portion is formed at an inside portion of the coil housing thereof,
wherein the second core is fixed to a second core holder coupled to the center of the rotor housing.

3. The motor according to claim 1 , wherein the first core has a first coil wound thereon, and the space portion of the coil housing has a second coil wound thereon.

4. The motor according to claim 3 , wherein the second coil and the inside wall of the space portion of the coil housing have an insulating layer formed therebetween.

5. The motor according to claim 4 , wherein the insulating layer is made of an insulating film or has an insulating material coated thereon.

6. The motor according to claim 3 , wherein
voltage applied to the second core is controlled by the voltage applied to the first core and the winding ratio between the first and second coils, and wherein
the magnetic force of the coil housing is controlled.

7. A motor comprising:
a rotor housing;
a stator assembly located inside the rotor housing;
a first core located inside the stator assembly;
a second core located at a center of the rotor housing; and
a coil housing being symmetrically located inside of the rotor housing, the coil housing having an upper portion, a lower portion, and an outside wall and an inside wall,
wherein a space portion is formed at an inside portion of the coil housing thereof,
wherein
the coil housing is formed by coupling the upper portion to the lower portion, wherein the upper portion is formed by a plurality of teeth-shaped walls and the lower portion is formed by a plurality of teeth-shaped walls, and wherein
the upper portion of the coil housing is alternatively coupled to the lower portion of the coil housing.

Assignees

• New Motech Co Ltd

Inventors

• Jang Jeong Cheol
• Seo Jeong Nam
• Kim Kyung Hwan

Classifications

• H02K1/24

  Rotor cores with salient poles {; Variable reluctance rotors} · CPC title

• H02K3/527 Primary

  applicable to rotors only · CPC title

• H02K3/345

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

• H02K19/10

  for multi-phase current · CPC title

• H02K1/22 Primary

  Rotating parts of the magnetic circuit · CPC title