DRIVING DEVICE

• Main Authors: TSUDA KEIICHI, NAKAMATSU SHUHEI
• Format: Patent
• Language: English; Japanese
• Published: 01.04.2021
• Subjects: BLASTING; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; DYNAMO-ELECTRIC MACHINES; ELECTRICITY; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; GENERATION; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

To provide a driving device having a structure capable of improving cooling efficiency of a stator.SOLUTION: A driving device 1 includes: a motor having a rotor 20 and a stator 30 located at the radial outer side of the rotor; and a refrigerant passage in which a refrigerant flows. The stator has a stator core 32 enclosing the rotor. The refrigerant passage has a first supply port 15 for supplying the refrigerant to the stator core at the radial outer side of the stator core. When viewed in an axial direction of a motor shaft, a direction in which the first supply port opens inclines to the radial outer side with respect to a direction in which a tangent line passing through the first supply port and contacting with an outer peripheral surface of the stator core extends from the first supply port to the outer peripheral surface of the stator core.SELECTED DRAWING: Figure 6 【課題】ステータの冷却効率を向上できる構造を有する駆動装置を提供する。【解決手段】駆動装置１は、ロータ２０、およびロータの径方向外側に位置するステータ３０を有するモータと、内部に冷媒が流れる冷媒流路と、を備える。ステータは、ロータを囲むステータコア３２を有する。冷媒流路は、ステータコアの径方向外側においてステータコアに冷媒を供給する第１供給口１５を有する。モータ軸の軸方向に見て、第１供給口が開口する向きは、第１供給口を通りステータコアの外周面と接する接線が、第１供給口からステータコアの外周面に向かって延びる向きよりも径方向外側に傾く向きである。【選択図】図６