LUBRICATING OIL SUPPLY DEVICE FOR AUTOMATIC TRANSMISSION

摘要

A lubricating oil supply device for an automatic transmission, by the adoption of which the automatic transmission is easily downsized and which supplies a sufficient amount of lubricating oil to planetary gears. The lubricating oil supply device for an automatic transmission supplies lubricating oil to the planetary gears placed inside the transmission. A circumferential oil containing groove (40) open in the axial direction of an input shaft (1) is formed by the following elements: a wall section (41a) of the substantially annular carrier cover (41), to the wall section (41a) being attached a pinion shaft (4) together with a carrier (3); a base section (41b) of the carrier cover (41), the base section (41b) extending in the axial direction of the pinion shaft (4); and an end section (33a) located inward of a clutch hub (33), the end section (33a) being connected to the base section (41b) of the carrier cover (41).