| US 7,557,486 B2 | ||
| Dual rotor type motor | ||
| Soung Bong Choi, Changwon-si (Korea, Republic of); Seong Hai Jeong, Changwon-si (Korea, Republic of); Yeong Soo Kim, Changwon-si (Korea, Republic of); Hung Myong Cho, Gimhae-si (Korea, Republic of); and In Geun Ahn, Changwon-si (Korea, Republic of) | ||
| Assigned to LG Electronics Inc., Seoul (Korea, Republic of) | ||
| Appl. No. 10/592,684 PCT Filed Jan. 17, 2006, PCT No. PCT/KR2006/000171 § 371(c)(1), (2), (4) Date May 14, 2007, PCT Pub. No. WO2006/075903, PCT Pub. Date Jul. 20, 2006. |
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| Claims priority of application No. 10-2005-0004169 (KR), filed on Jan. 17, 2005; application No. 10-2005-0004170 (KR), filed on Jan. 17, 2005; and application No. 10-2005-0004984 (KR), filed on Jan. 19, 2005. | ||
| Prior Publication US 2007/0205682 A1, Sep. 06, 2007 | ||
| Int. Cl. H02K 1/22 (2006.01) | ||
| U.S. Cl. 310—266 [310/154.33] | 47 Claims |
| 1. A dual rotor type motor comprising:
a shaft rotatably provided in a motor securing part;
a rotor assembly rotated with a center thereof fastened to the shaft, the rotor assembly comprising an outer rotor spaced
from the center of the shaft a predetermined distance with magnets secured along a circumferential direction, and an inner
rotor provided in an inside of the outer rotor at a predetermined distance with magnets secured along a circumferential direction;
and
a stator comprising a core made of metal, an insulator of an insulating material for surrounding the core so as to expose
a first surface and a second surface of the core a coil wound on an outer surface of the insulator, and a fixing part for
securing the insulator to the motor securing part, the stator provided between the outer rotor and the inner rotor so that
the exposed first and second surfaces of the core are spaced from and face the magnets of the outer and inner rotors respectively,
wherein the core comprises:
an outer core comprising a plurality of teeth extending in a radius direction, each of the teeth of the outer core including
a first surface facing a respective one of the magnets of the outer rotor, and a base for connecting the teeth of the outer
core to one another, and
an inner core comprising a plurality of teeth extending in a radius direction, each of the teeth of the inner core including
a second surface facing a respective one of the magnets of the inner rotor, and a base for connecting the teeth of the inner
core to one another.
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