| 摘要 |
PROBLEM TO BE SOLVED: To provide a driving unit vibration control holding device in a new structure specialized for an electric automobile entirely different from a conventional mount device for an internal combustion engine. SOLUTION: This driving unit vibration control holding device for an electric motor driving type vehicle has the following constitutions: (i) a sub frame structure in which a driving unit 12 is vibration-controlled and supported on a sub frame 14 via first vibration control devices 32, 32, 32, 32 and the sub frame 14 is vibration-controlled and supported by a vehicle body 16 via second vibration-control devices 42, 44 and 46; (ii) the total spring constant of the first vibration control devices 32, 32, 32 and 32 is larger than the total spring constant of the second vibration-control devices 42, 44 and 46 in the input direction of torque reaction force of the drive unit 12; and (iii) the average value of the distance between a torque roll shaft 40 of the drive unit 12 and the second vibration-control devices 42, 44 and 46 is larger than the average value of the distance between the torque roll shaft 40 and the first vibration-control devices 32, 32, 32 and 32. COPYRIGHT: (C)2011,JPO&INPIT |
