Patent ID: 8663057
Filing Date: 2014-03-04
Classification: F16H

Abstract:
1. An automated manual transmission, comprising: a first planetary gear device and a second planetary gear device, each including rotary elements receiving rotary force from an engine, respectively, and placed on a concentric axis; an input shaft provided to receive rotary force from the first planetary gear device; an output shaft parallel to the input shaft; a plurality of shift step gear pairs mounted on the input shaft and the output shaft to form different shift ratios; a plurality of synchronization devices provided to connect and disconnect any one shift step gear among the shift step gear pairs to the input shaft or output shaft; a bypass device provided to selectively connect the second planetary gear device to the output shaft; a first friction element provided to restrict rotation of rotary elements other than the rotary elements connected to the engine and the input shaft, respectively among the rotary elements of the first planetary gear device; and a second friction element provided to restrict rotation of rotary elements other than the rotary elements connected to the engine and the output shaft, respectively among the rotary elements of the second planetary gear device, wherein the first planetary gear device is configured by a single-pinion simple planetary gear device including a first sun gear, a first carrier, and a first ring gear, wherein the second planetary gear device is configured by a single-pinion simple planetary gear device including a second sun gear, a second carrier, and a second ring gear, wherein the first carrier and the second carrier are connected to the engine, wherein the first sun gear is connected to the input shaft, wherein a second gear is connected to the output shaft through the bypass device, wherein the first friction element is installed to restrict the rotation of the first ring gear, wherein the second friction element is installed to restrict the rotation of the second ring gear, wherein the first carrier and the second carrier are connected integrally with each other to be connected to the engine, wherein the input shaft is integrally connected with the first sun gear coaxially, and wherein the second sun gear is configured by a hollow body such that the input shaft penetrates the second sun gear, which is connected to the first sun gear.