MULTI-STAGE TRANSMISSION FOR VEHICLE

摘要

A multi-stage transmission for a vehicle may include an input shaft, an output shaft, first to fourth planetary gear devices disposed between the input shaft and the output shaft to transmit rotary force, each of the first to fourth planetary gear devices having three rotary elements, and at least six shifting elements connected to the rotary elements of the planetary gear devices.

主权项

1. A multi-stage transmission for a vehicle comprising:
an input shaft; an output shaft; first to fourth planetary gear devices disposed between the input shaft and the output shaft to transmit rotary force, each of the first to fourth planetary gear devices having three rotary elements; and at least six shifting elements connected to the rotary elements of the planetary gear devices, wherein a first rotary element of the first planetary gear device is selectively connected to each of a first rotary element and a second rotary element of the second planetary gear device, a second rotary element of the first planetary gear device is continuously connected to a second rotary element of the third planetary gear device while being installed to be fixable by one shifting element from among the at least six shifting elements, and a third rotary element of the first planetary gear device is selectively connected to each of a third rotary element of third planetary gear device and a second rotary element of the fourth planetary device, wherein the first rotary element of the second planetary gear device is installed to be fixable by another shifting element from among the at least six shifting elements, the second rotary element of the second planetary gear device is continuously connected to the input shaft, and a third rotary element of the second planetary gear device is continuously connected to a first rotary element of the third planetary gear device, wherein the first rotary element of the third planetary gear device is continuously connected to a first rotary element of the fourth planetary gear device and the second rotary element of the third planetary gear device is continuously connected to a third rotary element of the fourth planetary gear device, and wherein the second rotary element of the fourth planetary gear device is continuously connected to the output shaft.