Patent ID: 9664272
Date: 2017-05-30
CPC Classifications: F16H,Y10T

Claim:
1. A power unit comprising: an internal combustion engine; a transmission configured to transmit rotational driving force of the internal combustion engine; and a vibration isolating structure, wherein the vibration isolating structure comprises torque dampers, and wherein the torque dampers are configured to be disposed between a transmission gear of the transmission and a power transmission shaft supporting the transmission gear, wherein the power unit further comprises mutually rotatable intermediate rotational members, wherein the transmission gear comprises a forwardly opening recess, and the intermediate rotational members comprise a rearwardly opening arcuate recess, wherein the forwardly opening recess faces respectively to the rearwardly opening arcuate recess, wherein the torque dampers are interposed in a bridging manner within and between both the mutually facing forwardly opening recess and the rearwardly opening arcuate recess, wherein the mutually rotatable intermediate rotational members are configured to be interposed between the transmission gear and the power transmission shaft supporting the transmission gear, and wherein the vibration isolating structure further comprises a cam torque dampener disposed between the power transmission shaft and one of the intermediate rotational members.