Patent ID: 7204781
Filing Date: 2007-04-17
Classification: F16H

Abstract:
1. A transmission apparatus comprising: an auxiliary transmission which is adapted to be connected to a main transmission to transmit torque to the main transmission, and which comprises: a planetary gear set including a first rotating member serving as an input rotating member, a second rotating member serving as an output rotating member to be driven by the input rotating member, and a third rotating member serving as a reaction member; a holding device connected with the third rotating member of the planetary gear set; a clutch connected between two of the first, second and third rotating members of the planetary gear set; and a damper disposed in a common transmission path used for transmission of torque in both of a low speed select state and a high speed select state, wherein the holding device includes a one-way clutch and the damper is disposed in the common transmission path used for transmission in the low speed select state in which the clutch is disengaged and the high speed select state in which the clutch is engaged, wherein the transmission apparatus further comprises an input terminal member connected with the first rotating member of the planetary gear set, and an output terminal member which is adapted to transmit torque to the main transmission and which is connected with the second rotating member of the planetary gear set and the damper is connected between the input and output terminal members, and wherein the one-way clutch comprises an inner race fixed to be stationary, and an outer race connected with the third rotating member of the planetary gear set.