Patent ID: 7960893
Filing Date: 2011-06-14
Classification: D06F,H02K

Abstract:
1. An apparatus for driving a drum or a tub for holding clothes to be washed in a washing machine comprising: a housing in the washing machine; a rotational shaft is rotatably mounted in the housing of the washing machine, wherein the drum or the tub is connected to a front portion of the rotational shaft projected into the housing; an integrated double rotor including an inner rotor and an outer rotor in which a plurality of N-pole and S-pole magnets are disposed alternately in annular form on different concentric circumferences in each rotor, and opposing magnets with a predetermined distance between the inner and outer rotors are disposed to have opposite polarities, and a rotor supporter molded using a thermosetting resin, so that the respective inner and outer rotors are annularly integrated, a trench space is formed between the inner rotor and the outer rotor, and an end extended from the inner rotor to the central portion is connected with the outer circumferential surface of a bushing combined with the rotational shaft; and an integrated stator wherein U, V, W phase coil assemblies formed of a number of core groups including a number of independent division cores on the outer portion of which bobbins are respectively formed, wherein for each phase coil assembly, coils are sequentially wound around each division core so that short jump wires are connected between the division cores in each division core group, and long jump wires are connected between the division core groups, wherein the division core groups of the U, V, W phase coil assemblies are alternately disposed in an annular form in sequence of the phases, wherein the respective division core groups are integrally formed into a single body in annular form by a stator support, and wherein one end of the integrated stator is disposed in the trench space between the inner and outer rotors and an extension axially extended from the other end of the integrated stator is fixed to the housing of the washing machine.