Patent ID: 8337346
Filing Date: 2012-12-25
Classification: B60K,F16H,Y10T

Abstract:
1. A power unit comprising: an engine including an engine output shaft; a belt transmission driven by the engine; a belt transmission chamber incorporating the belt transmission; a second transmission including a transmission input shaft driven by the belt transmission and a transmission output shaft driven by the transmission input shaft; a second transmission chamber incorporating the second transmission; and a housing member constituting both a part of the belt transmission chamber and a part of the second transmission chamber, wherein the belt transmission chamber has first and second sides opposite each other wherein the engine and the second transmission chamber are juxtaposed on the first side of the belt transmission chamber, wherein the housing member includes a partition all between the part of the belt transmission chamber and the part of the second transmission chamber, wherein the belt transmission includes a drive pulley, a driven pulley, and a belt looped over the drive and driven pulleys, wherein the belt has first and second portions extended between the drive and driven pulleys, the first portion running from the drive pulley to the driven pulley, and the second portion running from the driven pulley to the drive pulley, wherein the engine output shaft serves as a drivel pulley shaft of the drive pulley, wherein the transmission input shaft is extended into the belt transmission chamber through the partition wall of the housing member so as to serve as a driven pulley shaft of the driven pulley, and wherein the transmission output shaft is extended through the partition wall of the housing member and is disposed between the drive and driven pulleys and between the first and second portions of the belt so as to extend through the belt transmission chamber and outward from the belt transmission chamber on the second side of the belt transmission chamber.