AUTOMATIC TRANSMISSION DEVICE

摘要

The present invention is provided with four planetary gear mechanisms (10, 20, 30, 40), three clutches (C1-C3), and three brakes (B1-B3). The sun gear (11) and carrier (12) of the first planetary gear mechanism (10) are joined to the ring gear (33) of the third planetary gear mechanism (30) and the carrier (22) of the second planetary gear mechanism (20); the ring gear (23) of the second planetary gear mechanism (20) is joined to the carrier (32) of the third planetary gear mechanism (30); the sun gear (31) of the third planetary gear mechanism (30) is joined to the sun gear (41) of the fourth planetary gear mechanism (40); the ring gear (43) of the fourth planetary gear mechanism (40) is connected to an input shaft (3); and the ring gear (13) of the first planetary gear mechanism (10) is connected to an output gear (4). As a result, it is possible to configure an automatic transmission device that can shift to a forward first gear through a forward tenth gear and a reverse gear.