Combined stator core for an electric rotary machine
AssigneeDenso Corporation
InventorsShigenori Yoneda, Masahiro Seguchi, Noriyasu Inomata
Life of this patent
Estimating the term…
Abstract
A yoke includes a plurality of recessed portions. A teeth block includes a plurality of protruding portions being coupled or fitted into the recessed portions of the yoke. The recessed portions and the protruding portions are disposed as a plurality of pairs in the lamination direction. The protruding portions and the yoke are fixed with a teeth fixing pin.
Claims22
A combination type stator core applicable to an electric rotary machine which is composed of 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 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 comprise 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;
- and
- said teeth fixing pin is inserted in through-holes of said shielding plate portions of said second annular plates and through-holes of said protruding portions of said second teeth which are overlapped with each other in the lamination direction.
A combination type stator core applicable to an electric rotary machine which is composed of a plurality of electromagnetic steel plates being multilayered so as to have a cylindrical yoke with numerous recessed portions arranged at predetermined pitches in the 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
- 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 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 comprise 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;
- and
- said recessed portions and said protruding portions being fitted into said recessed portions are provided as a plurality of pairs and disposed in such a manner that said recessed portions are independent from each other in the lamination direction and also said protruding portions are independent from each other in the lamination direction.
Dependencies are inferred from the claim text.