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US 7,605,508 B2Granted
Electrical machine with support of the rotor on an end face of the stator
AssigneeBrose Fahrzeugteile GmbH & Co. Kommanditgesellschaft
InventorsJoachim Baumgartner, Tobias Buban, Winfried Nöller, Marcus Podack
Life of this patent
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Abstract
An electrical machine has a stator, a rotor, which features a rotor shaft, and at least one bearing for the rotor. The bearing is supported on a bearing block, which in its turn rests on an end face of the stator or on an insulating end disk positioned on an end face of the stator and/or is supported inside the stator.
Claims7
An electrical machine comprising:
- an outer stator,
- a top insulating disk positioned on one end face of the stator having an inner opening with an inner wall extending in an axial direction,
- an inner rotor comprising a rotor shaft, and
- a first bearing for the inner rotor,
- wherein the first bearing is supported on a first bearing block which in its turn is supported axially on an end face of the outer stator and radially by said inner wall of said first insulating disk,
- wherein the first bearing block comprises retaining fingers which extend in axial direction to reach in a slot in the outer stator, wherein the length of a finger is substantially less than an axial length of a slot, respectively;
- a second bearing for the inner rotor,
- a bottom insulating disk positioned on the other end face of the stator;
- wherein an inner wall of the second insulating disk is provided with a latching hook which effects an axial fixing of a second bearing block, and
- wherein the outer side of the second bearing block facing away from the bearing is supported radially on an inner wall of the second insulating end disk.
7 more elements
An electrical machine comprising:
- an outer stator,
- an inner rotor comprising a rotor shaft, and
- a bearing for the rotor,
- wherein
- the bearing is supported on a bearing block which in turn is supported axially on an end face of the outer stator,
- the bearing is positioned in a step of the bearing block and is supported there both in the axial and also in the radial direction
- the outer side of the bearing block facing away from the bearing is supported radially on an inner wall of an insulating end disk,
- the inner wall of the insulating end disk is provided with latching hooks which effect an additional axial fixing of the bearing block,
- the bearing block comprises retaining fingers which engage in a slot in the outer stator, wherein the length of a finger is substantially less than an axial length of a slot, respectively,
- the bearing block and the insulating end disk form a one-piece plastic molded part, and
- the bearing is a ball race, the outer ring of the ball race is supported in the bearing block and a spring washer is provided in the axial direction between the ball race and the bearing block.
8 more elements
Dependencies are inferred from the claim text.