Motor attachment structure for electric vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsMasashi Ikemura, Yukihiko Ideshio, Tetsuya Yamaguchi
Life of this patent
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Abstract
A motor attachment structure for an electric vehicle includes: a motor generator including a tubular rotor configured to rotate together with a motor output shaft in an integrated manner, and a tubular stator placed radially outwardly from the rotor; a tubular bearing configured to rotatably support a rotating body rotating together with the motor output shaft in an integrated manner; a case in which the motor generator and the bearing are accommodated; and an attachment attached to the case. The attachment supports an outer peripheral surface of the bearing.
Claims5
A motor attachment structure for an electric vehicle, the motor attachment structure comprising:
- a case configured to accommodate:
- a motor including a tubular rotor configured to rotate together with an output shaft in an integrated manner, and a tubular stator placed radially outwardly from the rotor when the stator is viewed from the output shaft;
- a tubular bearing configured to rotatably support the output shaft or a rotating body configured to rotate together with the output shaft in an integrated manner;
- and
- an attachment attached to the case, wherein
- the attachment includes:
- a main body portion having a plate shape and placed at a position facing the motor in a direction along a central axis of the output shaft;
- and
- a projecting portion projecting from the main body portion toward the motor,
- a through hole is provided on the main body portion, the through hole penetrating through the attachment in the direction along the central axis of the output shaft,
- the main body portion includes a first small-diameter portion and a first large-diameter portion, the first large-diameter portion having a diameter larger than the first small-diameter portion,
- the main body portion is formed with a first stepped surface that is a surface between the first large-diameter portion and the first small-diameter portion;
- an inner peripheral surface of the first large-diameter portion is configured to support an outer peripheral surface of the bearing,
- the first stepped surface is configured to support an end surface of the bearing,
- the projecting portion has a tubular shape and is placed such that a central axis of the projecting portion coincides with the central axis of the output shaft,
- the projecting portion includes a second small-diameter portion and a second large-diameter portion, the second large-diameter portion having a diameter larger than the second small-diameter portion,
- the projecting portion is formed with a second stepped surface that is a surface between the second large-diameter portion and the second small-diameter portion,
- an inner peripheral surface of the second large-diameter portion is configured to support an outer peripheral surface of the stator,
- the second stepped surface is configured to support a first end surface of the stator, and
- the first stepped surface and the second stepped surface face a same direction along the central axis of the output shaft.
Dependencies are inferred from the claim text.