| 摘要 |
PURPOSE:To make it possible to suppress the scatter of oil, by communicating a thin pipe vertically attached to the axial core part of a crank shaft with an oil feed hole and by making a discharge pipe open in the vicinity of this thin pipe to reduce the centrifugal force applied to oil in which the thin pipe is submerged, for reducing variations in the level of oil. CONSTITUTION:By attaching a thin pipe 29 which is thinner than a crankshaft 10, and is communicated with an oil feed hole 11, to the axial core of the crankshaft 10, the peripheral speed of the peripheral part of the thin pipe 8 is made low and as well, the centrifugal force applied to oil to which the thin pipe 28 is submerged may be less so that variations in the level of oil may be reduced and the scatter of oil may be suppressed. With this advantageous effects, the opening of a discharge pipe 25 may be arranged in the vicinity of the rotational center, that is, in the vicinity of the thin pipe 28, so that gas flow shown by the solid line in the drawing tends to flow to the opening of the discharge pipe 25 overcoming the centrifugal force due to the rotation of a rotor 20 after the gas flow passes through an air gap 21 between the rotor 20 and a stator 19, etc. As a result, oil flow shown by the chain line is broken off due to weight differential after passing through the motor, and therefore, the oil is effectively separated. With this arrangement, the rise of oil may be prevented and as well as satisfactory lubrication may be made. |
