Motor case with corrugated oil passage
AssigneeToyota Jidosha Kabushiki Kaisha
InventorMasato Fujikawa
Life of this patent
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Abstract
A motor case includes: a case inner wall, and an oil passage provided on the case inner wall to flow a lubricating oil therein. Further, the case inner wall includes a plurality of wedge-shaped portions, arranged side by side in a circumferential direction of a stator, for supporting an outer periphery of the stator, and a corrugated portion disposed radially outward of the stator with respect to the plurality of wedge-shaped portions and disposed around the plurality of wedge-shaped portions, and the oil passage is provided between the plurality of wedge-shaped portions and the corrugated portion, so that a lubricating oil is meandering so as to flow in the radial direction and in the circumferential direction of the stator.
Claims9
A motor case comprising:
- a case inner wall;
- and
- an oil passage provided on the case inner wall to flow a lubricating oil therein;
- wherein the case inner wall includes:
- a plurality of wedge-shaped portions, arranged side by side in a circumferential direction of a stator, for supporting an outer periphery of the stator, each of the plurality of wedge-shaped portions including a tip that narrows in a radially inward direction;
- and
- a corrugated portion disposed radially outward of the stator with respect to the plurality of wedge-shaped portions and disposed around the plurality of wedge-shaped portions, and
- wherein the oil passage is provided between the plurality of wedge-shaped portions and the corrugated portion, so that a lubricating oil is meandering so as to flow in a radial direction and in the circumferential direction of the stator.
A motor case comprising:
- a case inner wall;
- and
- an oil passage provided on the case inner wall to flow a lubricating oil therein, wherein the case inner wall includes:
- a plurality of wedge-shaped portions for supporting an outer periphery of a stator are arranged side by side in a circumferential direction of the stator;
- and
- a corrugated portion disposed radially outward of the stator with respect to the plurality of wedge-shaped portions and disposed around the plurality of wedge-shaped portions,
- wherein the oil passage is provided between the plurality of wedge-shaped portions and the corrugated portion, so that a lubricating oil is meandering so as to flow in a radial direction and in the circumferential direction of the stator, and
- wherein openings are defined between adjacent wedge-shaped portions of the plurality of wedge-shaped portions such that the lubricating oil flowing through the oil passage can come into direct contact with the stator.
Dependencies are inferred from the claim text.