Patent ID: 9360110
Filing Date: 2016-06-07
CPC Classification: F16D,F16H,Y10S

Claim Text:
1. A transmission apparatus for use of an internal combustion engine and an electric motor as a drive source, comprising: a first gear shaft configured to disconnectably couple to the internal combustion engine via a first clutch; a second gear shaft configured to disconnectably couple to the internal combustion engine via a second clutch; a first speed-change gear mechanism provided on the first gear shaft and configured to selectively set a speed stage to any one of a first group of speed stages; a second speed-change gear mechanism provided on the second gear shaft and configured to selectively set a speed stage to any one of a second group of speed stages; a countershaft coupled to the first and second gear shafts via the first and second speed-change gear mechanisms so that a rotational output corresponding to a selected speed stage is produced from the countershaft; a planetary gear mechanism including a sun gear, planetary gears and a ring gear, wherein the sun gear is arranged so as to rotate integrally with the first gear shaft and the electric motor, the ring gear is fixed to a case of the transmission, and a speed-changed output is produced from the planetary gears; a counter member provided concentrically with the first gear shaft and configured to rotate integrally with the countershaft; and a coupling element disposed between a carrier of the planetary gears and the counter member and configured to disconnectably connect the carrier of the planetary gears to the counter member in order to select a predetermined speed so that rotation of the carrier of the planetary gears is transmitted to the countershaft via the counter member.