ELECTRIC MOTOR SYSTEM

• Main Authors: ITAYA, Takaki, MIYAMOTO, Shogo, MAEKAWA, Noriyuki, AOYAGI, Shigehisa, GOTO, Hideaki
• Format: Patent
• Language: English
• Published: 08.08.2024
• Subjects: CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; GENERATION

An object of the present invention is to provide an electric motor system capable of suppressing deterioration in cooling performance due to mixing of bubbles (air) into a refrigerant. An electric motor system 100 of the present invention includes: a gear 134; a first surface 155 that receives oil scraped off as the gear 134 rotates; a second surface 153 that is located downward in a vertical direction with respect to the first surface 155, faces the first surface 155 at a position overlapping the first surface 155 in the vertical direction, receives the oil dropped from the first surface 155, and receives the oil scraped up as the gear 134 rotates; and a recess 151 located downward in the vertical direction with respect to the second surface 153 and into which the oil received by the second surface 153 flows. Both ends of the second surface 153 in a horizontal direction perpendicular to the vertical direction and perpendicular to an axial center of the gear 134 are located inside both ends of the recess 151 in the horizontal direction.