Patent ID: 6907969

Claim:
An active dynamic damper comprising: a supporting member having a mounting plate portion and a central supporting portion fixed to a center of a surface of the mounting plate portion; a mass member which surrounds the central supporting portion of the mounting plate portion and is disposed such that the mass member is departed from the mounting plate portion, the mass member configured to vibrate along an axial direction of said central supporting portion; a rubber elastic body connecting portion configured to connect the central supporting portion of the supporting member with the mass member elastically; and a vibration element configured to vibrate the mass member with a driving force generated by an input of a control pulse signal corresponding to vibration of a vibration generating source, said mounting plate portion being fixed on a vibration damping object member, wherein said mounting plate portion is fixed on the vibration damping object member through a rubber elastic supporting portion such that said mounting plate portion is departed from said vibration damping object member.