| 摘要 |
PURPOSE:To lubricate gearing sections of respective gears well, by arranging a driven gear provided on a cam shaft which varies the stroke of a plunger for feeding lubricant and a drive gear provided to a step motor for driving the cam shaft vertically. CONSTITUTION:In a metering oil pump 20, a cam shaft 36 fitted in a housing 31 is rotary driven by a step motor 21 to reciprocate a plurality of plungers so as to deliver lubricant through a plurality of delivery ports 41a-41d. Here, a drive gear 44 is secured to an end of the shaft 21a of a step motor 21 while a driven gear 44 engagable with the drive gear 44 is secured to en end of the cam shaft 36 and the driven gear 45 is arranged above the drive gear 44. Consequently, lubricant is led from a driving warm 39 and fed through the cam shaft 36 to en engaging section of the driven gear 45 and the drive gear 44 so as to lubricate the engaging section. |
