| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve efficiency, and to reduce generation of an abnormal sound, by stabilizing tooth contact of various gears, with a compact constitution, in a final reduction gear having an orthogonal shaft gear and a speed reduction mechanism using a planetary gear. <P>SOLUTION: A radial bearing 20 having large radial load capacity, actually, a cylindrical roller bearing, is arranged between the radial direction of a bevel ring gear 122 of the orthogonal shaft gear 12 and a differential case 141. A thrust bearing 21 having large axial load capacity, actually, a thrust ball bearing or a thrust roller bearing, is arranged between the inner race side of this radial bearing 20, the side of a fitting part 141a of the differential case 141 in which this inner race is fitted, and a shaft end part of a sun gear 131. A thrust bearing 23 having large axial load capacity, actually, the thrust ball bearing or the thrust roller bearing, is also arranged between the bevel ring gear 122 and a planetary carrier 134 of the speed reduction mechanism part 13. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
