| 摘要 |
PURPOSE:To restrain the rise in temperature and thereby to prolong the lifetime of a pony motor device by supplying lubricating oil to a ball bearing which supports the upper part of a driving shaft, by making the oil circulate through a group of gears of the motor via a overrunning clutch part, and by improving lubrication thereby. CONSTITUTION:Lubricating oil is supplied from an oil-supplying unit 46 to a ball bearing 36 which supports the upper part of the driving shaft 29 of the main motor 8. An overrunning clutch 11 is provided under this ball bearing 36 through the intermediary of a skirt 31, and the lubricating oil is supplied from a communicating vent 31a of the skirt to the part of the clutch, which it is circulated by a pumping effect of a pumping orifice 11e formed in an outer wheel 11b and of a vertical vent 35a provided in a bearing support 35. In addition, a part of the lubricating oil is supplied to an oil tank 34 for a group of gears 17-23 of a pony motor 15 through an oil-discharging port 35c and is returned to the oil- supplying unit 46 through an oil-discharging pipe 48. |
