| 摘要 |
<p>A motor drive unit is configured such that a rotor shaft (6) rotating with a rotor (4r) arranged in a stator (4s) coaxially therewith is supported by a bearing at both sides of a case, and the rotation of the rotor is extracted by a gear (21) arranged at one end of the rotor shaft (6). A cooling oil passage for the motor drive unit is constituted by an oil supply reservoir (24) and an oil discharge reservoir (27) separated from each other on both sides in the axial direction of the gear (21) near the one end of the rotor shaft (6); an intermediate oil reservoir (11) arranged near the other end of the rotor shaft (6); an oil supply passage (6a) arranged in the center of the rotor shaft (6) so as to link the oil supply reservoir (24) and the oil intermediate reservoir (11); and an oil discharge passage (6b) arranged on the rotor shaft (6) around the oil supply passage (6a) to link the oil intermediate reservoir (11) and the oil discharge reservoir (27).</p> |
