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US 6,787,950 B2Granted
Stator for an electric drive with a tubular insulator as lost casting mold
AssigneeSiemens Aktiengesellschaft
InventorBruno Heim
Life of this patent
Estimating the term…
Abstract
A stator for an electric drive, includes a stator housing configured in the form of a stack of laminations and having a stator bore. The housing is surrounded by a cooling jacket and has opposite winding end portions. Tubular insulators abut the bore-confronting inner surface of the winding end portions, whereby the tubular insulators bound respective cavities in concert with end faces of the stator housing and the cooling jacket for receiving the winding end portions, with the cavities being filled with insulating casting material.
Claims10
A stator for an electric drive;
- comprising:
- a stator housing in the form of a stack of laminations, said housing having opposite winding end portions and a stator bore which is defined by an axis;
- a pair of tubular insulators, one tubular insulator abutting an axis-confronting inner surface of one winding end portion and the other tubular insulator abutting an axis-confronting inner surface of the other winding end portion;
- and
- a cooling jacket arranged in circumferential direction of the stator housing, wherein a cavity is bounded only by one tubular insulator in concert with an end face of the housing and the cooling jacket for receiving one winding end portion, and wherein another cavity is bounded only by the other tubular insulator in concert with another end face of the housing and the cooling jacket for receiving the other winding end portion, with each of the cavities being filled out with insulating casting material.
2 more elements
An electric drive, comprising:
- a stator including a stator housing in the form of a stack of laminations said housing having opposite winding end portions and a stator bore which is defined by an axis and destined for receiving a rotor;
- a pair of tubular insulators, one tubular insulator abutting an axis-confronting inner surface of one winding end portion and the other tubular insulator abutting an axis-confronting inner surface of the other winding end portion;
- and
- a cooling jacket arranged in circumferential direction of the stator housing,
- wherein a cavity is bounded only by one tubular insulator in concert with an end face of the housing and the cooling jacket for receiving one winding end portion, and wherein another cavity is bounded only by the other tubular insulator in concert with another end face of the housing and the cooling jacket for receiving the other winding end portion, with each of the cavities being filled out with insulating casting material.
2 more elements
Dependencies are inferred from the claim text.