AUTOMATIC TRANSMISSION DEVICE

摘要

The present invention is provided with three planetary gear mechanisms (10, 20, 30), five clutches (C1 to C5), and two brakes (B1, B2), wherein the carrier (23) of the second planetary gear mechanism (20) is connected to the sun gear (31) of the third planetary gear mechanism (30) by means of a first connection element (51), an input shaft (3) is connected to the ring gear (22) of the second planetary gear mechanism (20), an output gear (4) is connected to the carrier (12) of the first planetary gear mechanism (10), and gears 1 to 9 and a reverse gear are formed by engaging four and releasing three clutches (C1 to C5) and brakes (B1, B2). It is possible to reduce loss and to improve the transmission efficiency of the entire device.