ELECTRIC MACHINE ROTOR AND RELATED ELECTRIC MACHINE
To provide a strong connection between a rotor shaft and multiple layers of magnetic foils corresponding to the rotor shaft.SOLUTION: A rotor 6 of an electric machine 4 includes a drive shaft and a plurality of foils 12 provided with an insertion seat 16. At the insertion seat 16, the foils 12 are c...
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Format: | Patent |
Sprache: | eng ; jpn |
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Zusammenfassung: | To provide a strong connection between a rotor shaft and multiple layers of magnetic foils corresponding to the rotor shaft.SOLUTION: A rotor 6 of an electric machine 4 includes a drive shaft and a plurality of foils 12 provided with an insertion seat 16. At the insertion seat 16, the foils 12 are coaxially engaged to the drive shaft at an engagement portion of the drive shaft. The foils 12 have the overall shape of a circular sector extending from an outer edge 28 corresponding to an outer diameter of the rotor 6, and an inner edge 32 corresponding to an inner diameter delimiting the insertion seat 16 which can be engaged with the engagement portion of the drive shaft. The engagement portion includes a lateral surface that can be engaged with the insertion seat 16 of the foils 12. The foils 12, on the side of the inner edge 32, include cavities 36 passing through the foil 12 throughout the entire thickness in an axial direction parallel to a rotation axis X-X. The cavities 36 impart elasticity in a radial direction perpendicular to the rotation axis X-X, to blocking portions of the foils 12 radially enclosed between the inner edge 32 and lateral ends of the cavities 36.SELECTED DRAWING: Figure 4
【課題】ロータシャフトと、これに対応する複数層の磁性箔との間に、強固な接続を提供する。【解決手段】電気機械4のロータ6は、駆動シャフトと、挿入座部16が設けられた複数の箔12とを備える。挿入座部16において、複数の箔12は、駆動シャフトの係合部において駆動シャフトに対して同軸に係合される。箔12は、ロータ6の外径に対応する外縁部28と、駆動シャフトの係合部に係合可能な挿入座部16の範囲を定める内径に対応する内縁部32とから延在する円形領域の全体形状を有する。係合部は、箔12の挿入座部16に係合可能な外側面を備える。複数の箔12は、内縁部32側において、回転軸X-Xに平行な軸方向の全厚さに亘って箔12を貫通するキャビティ36を備える。キャビティ36は、回転軸X-Xに垂直な径方向における弾力性を、内縁部32とキャビティ36の両側端部との間で径方向に取り囲まれた箔12の閉塞部に付与する。【選択図】図4 |
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