Oil-evacuated electrical machine having rolling bearings, for a motor vehicle
AssigneeSchaeffler Technologies AG & Co. KG
InventorsAlexandre Fischer, Thomas Fritz, Andreas Keskinoglu
Life of this patent
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Abstract
An electrical machine (10) for an electrically operable axle of a motor vehicle, having a shaft (12) with an axis of rotation (D), at least one bearing (14), wherein the shaft is rotatably mounted via the at least one bearing, at least one end shield (16), and at least one bearing ring (18), which is arranged coaxially with the axis of rotation (D). The at least one bearing is connected to the end shield via the bearing ring, and the bearing ring has at least one longitudinal recess (20a, 20b) on the outside for fluid evacuation. An electrically operated axle for a motor vehicle having the electrical machine is also provided.
Claims15
An electrical machine for an electrically operable axle of a motor vehicle, the electrical machine comprising:
- a shaft having an axis of rotation;
- at least one bearing, the shaft being rotatably mounted via the at least one bearing;
- at least one end shield including a centering surface and at least one radially extending aperture extending through an axially extending surface of the centering surface;
- and
- at least one bearing ring arranged coaxially to the axis of rotation, the at least one bearing being connected to the end shield via the bearing ring, and the bearing ring having at least one longitudinal recess configured for fluid evacuation, the at least one longitudinal recess is arranged on an outer circumference of the bearing ring and extends parallel to the axis of rotation uninterruptedly from a first axial end face to a second axial end face of the bearing ring, wherein the bearing ring directly contacts an outer ring of the bearing or the bearing ring is the outer ring of the bearing.
An electrical machine for an electrically operable axle of a motor vehicle, the electrical machine comprising:
- a shaft having an axis of rotation;
- at least one bearing, the shaft being rotatably mounted via the at least one bearing;
- at least one end shield;
- and
- at least one bearing ring including a generally hollow cylindrical shape, the at least one bearing ring is arranged coaxially to the axis of rotation and connected to the end shield via the bearing ring, and the bearing ring is positioned via a centering surface of the end shield, the bearing ring including:
- at least one longitudinal recess extending in a radial direction perpendicular to the axis of rotation on an axial end face of the bearing ring;
- and
- at least one longitudinal recess extending in an axial direction parallel to the axis of rotation on an outer radial face of the bearing ring, wherein the at least one longitudinal recess extending in the radial direction is directly fluidly connected to the at least one longitudinal recess extending parallel to the axis of rotation, and the recesses are configured for fluid evacuation;
- wherein the end shield has at least one circumferentially extending collecting recess extending into the centering surface and configured for receiving fluid, and the end shield has at least one radially extending radial recess extending through an axially extending surface of the centering surface, and the at least one radial recess extends in the radial direction.
Dependencies are inferred from the claim text.