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US 2025/0030305 A1Published application
Rotor shaft with localized splines for keyways
OwnerTimothy John Cripsey, Robert John-Luke Herston +1inventors
InventorsTimothy John Cripsey, Robert John-Luke Herston, Alexander Christopher VanSchaikMartinet
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Abstract
A rotor shaft includes a tubular shaft having an inner surface, an outer surface, a first end, and an opposing second end. At least one keyway is formed in the outer surface of the tubular shaft. An inner diameter of the tubular shaft is aligned with the at least one keyway is less than an inner diameter of the tubular shaft not radially with the at least one keyway.
Claims20
A rotor shaft comprising:
- a tubular shaft having an inner surface, an outer surface, a first end, and an opposing second end;
- and
- at least one keyway formed in the outer surface of the tubular shaft, wherein an inner diameter of the tubular shaft aligned with the at least one keyway is less than an inner diameter of the tubular shaft not radially with the at least one keyway.
A rotor shaft for an electric vehicle comprising:
- a tubular shaft having an inner surface, an outer surface, a first end, and an opposing second end;
- and
- at least one keyway formed in the outer surface of the tubular shaft, wherein a thickness of the tubular shaft aligned with the at least one keyway is substantially equal to or greater than a thickness of the tubular shaft not aligned at the at least one keyway.
A method of forming a rotor shaft for an electric vehicle comprising:
- providing a preform;
- and
- manipulating the preform to form a tubular shaft through a flow forming process, wherein an inner surface of the tubular shaft includes a spline extending along a length of the tubular shaft.
Dependencies are inferred from the claim text.