Sheet-layered lamination stack slotted rotor for electric motor
AssigneeSiemens Aktiengesellschaft
InventorErnst Wellisch
Life of this patent
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Abstract
In an electric motor with a stator and a rotor which includes at least a stack of laminations (2) layered by sheets and provided with slots (8) for receiving rotor windings, at the end face (3, 4) of at least one stack of laminations (2) at least one rotor end sheet (5) is provided which is made of high-strength fine-grain structural steel and exhibits, at least in proximity of the rotor axis, the geometric shape of the sheets layered in the stack of laminations (2). With such a rotor, high speeds and a high operational safety can be ensured.
Claims11
Electric motor including a stator and a rotor which defines a rotor axis and includes at least a stack of laminations layered by sheets and provided with slots for receiving rotor windings, wherein at an end face of the at least one stack of laminations, there is provided at least one rotor end sheet which abuts laterally in radial direction the stack of laminations and is made of high-strength fine-grain structural steel, wherein the rotor end sheet has a flat thin configuration and matches at least in proximity of the rotor axis, a shape of the sheets layered in the stack of laminations.
An electric motor, comprising:
- a stator;
- and
- a rotor defined by a rotor axis and having a stack of laminations which is layered by sheets, said stack of laminations having opposite end faces, and two rotor end sheets, one of the rotor end sheets provided on one of the end faces of the stack of laminations, and the other one of rotor end sheets provided on the other one of the end faces of the stack of laminations, each of said rotor end sheets abutting laterally in radical direction the stack of laminations and being made of high-strength fine-grain structural steel, wherein each of the rotor end sheets has a flat thin configuration and matches, at least in proximity of the rotor ends, a shape of the sheets layered in the stack of laminations.
Dependencies are inferred from the claim text.