Patent ID: 6494444
Filing Date: 2002-12-17
Classification: F16F

Abstract:
A vibration damping device for damping vibrations of a vibrative member of a vehicle, comprising:a rigid housing member having an accommodation space, which is fixedly disposed in the vibrative member; and an independent mass member including a rigid mass body and an elastic body layer formed on and bonded to an outer surface of said rigid mass body, said outer surface of said rigid mass body having a configuration different from a configuration of an inner surface of said housing member which defines said accommodation space, said independent mass member being non-adhesively disposed in said accommodation space such that an outer surface of said independent mass member is opposed to said inner surface of said housing member with a predetermined gap distance therebetween, to thereby permit displacement of said independent mass member relative to said housing member, said independent mass member and said housing member being brought into elastic impact against each other, upon application of a vibrational load, at respective abutting surfaces thereof which are opposed to each other in a direction in which said vibrational load is applied, said elastic body layer of said independent mass member having a wall thickness which is partially varied so that said abutting surface of said independent mass member has a configuration corresponding to a configuration of said abutting surface of said housing member.