| 摘要 |
PURPOSE:To prevent an output shaft from seizing to a bearing by picking up and flowing out lubricating oil stored in the bottom of a case from above the shaft and the bearing, and supplying it to the bearing. CONSTITUTION:When an output shaft gear 11 is rotated, lubricating oil 14 stored in the bottom of a case 3 is intaken to between ribs 161 and 162, and held between the ribs 161 and 162 by a capillary force. When the gear 11 is rotated at 180 deg., the oil 14 held between the gear 11 and a bearing 13 is flowed down by a gravity to arrive at a gap 17 between the bear 11 and the bearing 13, and intaken to a gap 18 between an output shaft 10 and the bearing 13 by a capillary tube phenomenon. |
