Patent ID: 8662233
Filing Date: 2014-03-04
Classification: F16D,F16H

Abstract:
1. An engine unit comprising: a crankshaft extending in a lateral direction or an approximately lateral direction of a vehicle; an output shaft that is parallel or substantially parallel to the crankshaft; at least one main shaft section that is parallel or substantially parallel to the output shaft, rotates due to rotation power transferred from the crankshaft, and outputs the rotation power to the output shaft via a transmission gear mechanism; at least one clutch that connects and disconnects the rotation power transferred from the crankshaft to the at least one main shaft section; a transmission shaft that is parallel or substantially parallel to the output shaft and rotates due to the rotation power from the output shaft; a propeller shaft that extends in a front-back direction of the vehicle and rotates due to the rotation power from the transmission shaft and drives a rear wheel; and a drive unit case in which the crankshaft, the at least one main shaft section, the transmission gear mechanism, the output shaft, the transmission shaft, and the propeller shaft are provided in a rotatable fashion; wherein the at least one main shaft section is arranged in the drive unit case such that one end of the at least one main shaft section projects from the drive unit case beyond one end of the output shaft, the one end of the output shaft pointing in a same direction as the one end of the at least one main shaft section; the transmission shaft is arranged such that the rotation power is transmitted via an intermediate gear provided at the one end of the output shaft in the lateral direction; the at least one clutch is arranged at a same side where the propeller shaft is arranged in the lateral direction or the approximately lateral direction of the vehicle and is detachably connected to the one end of the at least one main shaft section at a position in which the at least one clutch overlaps with at least a portion of the intermediate gear axially sideways from the output shaft.