Patent ID: 7278633

Claim:
A hydraulic antivibration device arrangement comprising: a hydraulic antivibration device which comprises a cylindrical main body member, a boss member situated on a lower end face side of the main body member, a vibration-isolating base made of rubber-like elastomer material connecting the boss member and the main body member, a diaphragm attached to the main body member to define a liquid-filled chamber between the diaphragm and the vibration-isolating base, partition means comparting the liquid-filled chamber into a first liquid chamber on the vibration-isolating base side and a second liquid chamber on the diaphragm side, an orifice putting the first liquid chamber and the second liquid chamber into communication with each other, and a rubber stopper member made of rubber-like elastomer material provided on an outer surface of the main body member; vibration source side bracket formed integrally with the main body member of the hydraulic antivibration device and to be coupled to a vibration source side; and a body side bracket which includes a bottom face part to which the boss member of the hydraulic antivibration device is locked and fixed, a pair of sidewall parts provided perpendicularly from the bottom face part and opposed to each other, interposing the hydraulic antivibration device therebetween, and a top face part interconnecting the pair of the sidewall parts and opposed to the bottom face part, interposing the hydraulic antivibration device between the bottom face part and the top face part, and is adapted to be connected to a body frame side; wherein said hydraulic antivibration device is constructed to support the vibration source in a suspending manner and to be capable of bringing the rubber stopper member provided on the outer surface of the main body member into abutment on internal faces of the sidewall parts of the body side bracket, thereby regulating displacement of the vibration source in a roll motion direction at least upon acceleration, wherein the rubber stopper member is provided with a protuberant rubber portion protruding from the outer surface of the main body member toward the sidewall parts of the body side bracket and tapering in cross-section, wherein the protuberant rubber portion is situated at least on an upper end side above a vertically intermediate position of the main body member and configured in a transversely elongated body extending straight widthwise toward the sidewall parts of the body side bracket while facing the sidewall parts in a spaced relationship of a definite distance; wherein the sidewall parts of the body side bracket each include an abutment sidewall portion having an abutment face on which the protuberant rubber portion of the rubber stopper member abuts and a thick-walled sidewall portion formed to be more thick-walled than the abutment sidewall portion, and wherein the abutment face of the abutment sidewall portion is formed to be depressed from the inner face of the thick-walled sidewall portion.