| 摘要 |
PURPOSE:To aim at increasing the volume of supply oil, by providing an oil feed pump 22 having the lower section formed with a curved part decreasing its outer diameter downward and the outer peripheral section of the cylindrical part formed therein with a recess. CONSTITUTION:The cylindrical part 24 of an oil feed pump 22 is formed therein with a recess 25 which is partly pressed out inward. The lower section of the cylindrical part 24 is provided with a curved part 26 having its outer diameter gradually decreasing downward. The recess 25 is fitted thereonto with the axial bore 14 of a cylindrical part 24 in a position above the lower face 23 of a shaft 2. Lubrication oil 12 is pumped up upon the shaft rotating under the action of both the viscosity of lubrication oil 12 and the inner and outer surfaces 26a, 26b of the curved part 26. A tapered part having an outer diameter decreasing downward may be substituted for the curved part 26. |
