| 摘要 |
PROBLEM TO BE SOLVED: To provide a lubrication structure of a wet-type engagement element which can reduce supply holes for supplying lubricants to a wet-type engagement element.SOLUTION: An engagement portion 86 between a split drive gear 22 and an idle gear 37 opposes a direction of a rotation center line C1 from a left side with respect to a brake disc 74 and a brake plate 75 of a reverse brake 24. Gear teeth of the split drive gear 22 are left-twisted oblique teeth. Gear teeth of the idle gear 37 which are engaged with the gear teeth of the split drive gear are right-twisted oblique teeth. Therefore, at the rotation of the split drive gear 22 and the idle gear 37, the right-side gear teeth are engaged later than the left-side gear teeth. By the engagement of the gear teeth, a part of a lubricant which is supplied to the split drive gear 22 and the idle gear 37 is scattered to a right side from the engagement portion 86.SELECTED DRAWING: Figure 4 |
