| 摘要 |
PURPOSE:To sufficiently secure the high damping function for the low frequency vibration and reduce the increase of the dynamic spring constant in the input of the high frequency vibration by charging the inside of a fluid chamber with air and forming an air reservoir at the first supporting metal fitting side part. CONSTITUTION:An engine mount 16 can be represented in model form as shown in the figure, having the spring component Kg of a rubber elastic body 14, spring component Kl of a high viscous fluid 42, and the spring component Ka of air 48, and the damping Cg of the rubber elastic body and the damping component Cl of the high vissous fluid 42. The direct connection between the vibration input side and the vibration output side with the spring constant Kl of the high viscous fluid 42 is prevented because of an air reservoir 44 in a fluid chamber 40, and since the vibration input side and vibration output side are connected by the spring constant Kl of the high viscous fluid 42 with the exceedingly small spring component Ka of the air 48 in the air reservoir 44, the increase of the dynamic spring constant of the mount due to the hardening of the spring constant Kl of the high viscous fluid 42 can be suppressed exceedingly effectively. |
