Patent ID: 7296650

Claim:
A vibration isolating proof device for elastically supporting a power plant mounted on a vehicle with a length direction of the power plant aligned in a traverse direction of a body of the vehicle, the vibration isolating proof device having an oscillation limiting mechanism for limiting oscillation of the power plant in a roll direction thereof; wherein the oscillation limiting mechanism has a receiving member for a force in a vehicle body longitudinal direction receiving a compressive force in the vehicle body longitudinal direction between a member of the vehicle body and a member of the power plant facing each other in the vehicle body longitudinal direction in company with rolling of the power plant, the receiving member is constructed of: a rubber portion and a core body made of a material higher in stiffness than the rubber portion and provided integrally with the rubber portion in a single piece at least so as to be revolvable around an axis in the vehicle body traverse direction by a predetermined angle or more and configured such that an application point of a force from the front side of the vehicle body to the core body in the rubber portion is shifted from an application point of a force from the back side of the vehicle body to the core body when the receiving member receives the compressive force in the vehicle body longitudinal direction, and the receiving member becomes shear-deformed in a vertical direction with the core body revolved around the axis by receiving the compressive forces from the front and rear sides of the vehicle body even when the receiving member is compressed in the vehicle body longitudinal direction because of rolling of the power plant.