DRIVE DEVICE

To provide a drive device having a structure which enables improvement of cooling efficiency of a stator core.SOLUTION: A drive device includes: a motor having a rotor and a stator core; a housing which houses the motor therein; and a first refrigerant injection part 11 having injection ports for in...

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Hauptverfasser: NAKAMURA KEIGO, FURUKAWA DAICHI
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a drive device having a structure which enables improvement of cooling efficiency of a stator core.SOLUTION: A drive device includes: a motor having a rotor and a stator core; a housing which houses the motor therein; and a first refrigerant injection part 11 having injection ports for injecting a refrigerant to the stator core. The stator core has: a cylindrical stator core body 32a; and a fixed part fixed to the housing. The fixed part includes an upper fixed part 32f protruding from the stator core body 32a to the upper side in a vertical direction. The injection ports include first injection ports 14 located at the vertical lower side relative to a vertical upper side end part of the upper fixed part 32f. The upper fixed part 32f is located at one circumferential side of the first injection ports 14. A direction in which each first injection port 14 is open is a direction oriented to an area immediately below the first injection port 14 in a vertical direction or a direction inclining to the one circumferential side and a direction oriented to a portion, which is located closer to the other circumferential side than a border with the other circumferential end part of the upper fixed part 32f, of an outer peripheral surface of the stator core body 32a.SELECTED DRAWING: Figure 5 【課題】ステータコア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】ロータおよびステータコアを有するモータと、内部にモータを収容するハウジングと、ステータコアに冷媒を噴射する噴射口を有する第1冷媒噴射部11と、を備える。ステータコアは、円筒状のステータコア本体32aと、ハウジングに固定される固定部と、を有する。固定部は、ステータコア本体32aから鉛直方向上側に突出する上側固定部32fを含む。噴射口は、上側固定部32fの鉛直方向上側の端部よりも鉛直方向下側に位置する第1噴射口14を含む。上側固定部32fは、第1噴射口14の周方向一方側に位置する。第1噴射口14が開口する向きは、鉛直方向真下を向く向き、または周方向一方側に傾いた向きであり、かつ、ステータコア本体32aの外周面のうち、上側固定部32fの周方向他方側の端部との境界よりも周方向他方側に位置する部分を向く向きである。【選択図】図5