Patent ID: 8864116

Claim:
A vibration insulator apparatus comprising: a vibration insulating bush positioned in a space formed by a vehicle frame where vibration occurs due to an external force including vibration caused by a driven engine and an air duct forming a path through which air introduced from the atmosphere is supplied to a combustion chamber of the engine and coupled to the vehicle frame to receive the vibration of the vehicle frame; wherein a surface of the vibration insulating bush, contacted with the vehicle frame, forms a first line contact belt; wherein a surface of the vibration insulating bush, contacted with the air duct, forms a discontinuous contact surface having one or more non-contact portions; wherein another surface of the vibration insulating bush, contacted with the air duct, forms a second line contact belt; wherein the air duct has a flange extended therefrom and positioned at the portion coupled to the vehicle frame; wherein the vibration insulating bush includes: a vibration distribution flange positioned in a space formed by the flange and the vehicle frame and forming the first line contact belt and the discontinuous contact surface; a top surface contact portion extended from the vibration distribution flange and positioned on a top surface of the flange to form the second line contact belt; and an edge portion at a lower portion thereof and a groove is formed between the edge portion and the vibration distribution flange under the flange of the air duct; wherein the one or more non-contact portions of the discontinuous contact surface are depressed from the discontinuous contact surface, and wherein protrusions are formed at positions corresponding to the one or more non-contact portions so as to form the first line contact belt.