| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To constitute a bearing device which maintains excellent oil supply to a bearing by suppressing bleeding of lubrication oil due to increase of a pressure difference between the inside and outside of a main motor, in the bearing device using the lubrication oil. <P>SOLUTION: An oil return hole B for communicating a pressure mitigation chamber B and an oil storage chamber is provided to return oil flowing through a labyrinth and mist-like lubrication oil to the oil storage chamber. Also, the oil return hole B has a feature of mitigating a pressure difference caused by an oil scraping-up disc by connection to an oil return hole A communicating the pressure mitigation chamber A and the oil storage chamber. The lubrication oil is prevented from being pulled into the pressure mitigation chamber, a lubricating performance of a bearing is excellently maintained, and a phenomenon that the lubrication oil bleeds to the inside and outside of a vehicular main motor is prevented to contribute to reduction of maintenance work of the vehicular main motor. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
