US 2003/0067104 A1Published application

Vibration-isolating device

AssigneeToyo Tire & Rubber Co., Ltd.

InventorsYukio Takashima, Kentaro Yamamoto

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Abstract

A vibration-isolating device equipped with a vibration-isolating substrate comprising a rubber elastomer interposed between a first attachment metal fitting and a cylindrical main metal fitting, stopper metal fittings to restrain excessive deformation, which is capable of effectively making use of limited installation space as well as easy and proper assembling of the stopper metal fittings. A body portion comprising the vibration-isolating substrate, a stopper portion provided on the first attachment metal fitting and the annular stopper metal fitting is constructed to be an elongated circle or ellipse in cross-section. Furthermore, caulking to the flange portion at the upper end of the stopper metal fitting is done only on both ends (left and right ends shown in the figures) in the direction of the major axis of the elongated circle or the ellipse. Especially, the outer edges of the caulking portion and corresponding outer edge of the flange portion are disposed along the circumference of one large circle whose center is the central axis.

Claims3

Dependent claims

A liquid-containing vibration-isolating device comprising a vibration-isolating substrate made up of a rubber elastomer, a first metal fitting connected to one side of the vibration-isolating substrate, a second cylindrical or annular metal fitting connected to the other side of the vibration-isolating substrate, a first stopper portion provided on the first metal fitting or a metal fitting connected to the first metal fitting, a flange portion projecting outwardly provided on the second metal fitting or a metal fitting connected to the second metal fitting, a caulking portion where at least a part of the flange portion is caulked, and a stopper metal fitting having a second stopper portion disposed close to the first stopper portion so as to be able to abut on it;

which is characterized in that the outer circumference of the vibration-isolating substrate and the second metal fitting trace close to an elongated circle or ellipse as viewed from the axial direction, and that at least the places where the outer edges of the caulking portion and of the flange portion connect with each other are provided along the circumference of a circle around the central axis.

Dependencies are inferred from the claim text.