Patent ID: 6960861
Filing Date: 2005-11-01
Classification: H02K

Abstract:
1. A combination type stator core applicable to an electric rotary machine, comprising: a plurality of electromagnetic steel plates being multilayered so as to have a cylindrical yoke with numerous recessed portions arranged at predetermined pitches in a circumferential direction and each opened toward an inner radial direction and a teeth block extending toward the inner radial direction with protruding portions coupled or fitted into said recessed portions of said yoke, wherein one or more teeth fixing pins are provided to fix said teeth block to said yoke; said yoke comprises first annular plates defining said recessed portions being opened toward both axial directions as well as toward the inner radial direction and second annular plates being disposed next to said first annular plates at an axial end thereof and each having a shielding plate portion for shielding said recessed portions of said first annular plates in a lamination direction of said multilayered electromagnetic steel plates; said teeth block comprises first teeth defining said protruding portions inserted in the radial direction and fitted into said recessed portions and second teeth each being disposed next to said first teeth in the axial direction so as to be brought into hermetical contact with a cylindrical surface of said second annular plates; said one or more teeth fixing pins are inserted in through-holes of said shielding plate portions of said second annular plates and in through-holes of said protruding portions of said second teeth which are overlapped with each other in the lamination direction, and each of said protruding portions is arranged by a plurality of electromagnetic steel plates being multilayered to form said first teeth of said teeth block, and each of said recessed portions is arranged by a plurality of electromagnetic steel plates being multilayered to form said first annular plates of said yoke.