Patent ID: 8231116
Filing Date: 2012-07-31
Classification: F16F,Y10T

Abstract:
1. A fluid filled type vibration damping device comprising: an inner mounting member fixable to one of components to be linked in vibration damping fashion; a main rubber elastic body bonded to the inner mounting member; a collar sleeve bonded onto an outside peripheral face of the main rubber elastic body; an outer tubular mounting member attached to another of the components to be linked in vibration damping fashion, the outer tubular mounting member being externally fitted onto the collar sleeve so that an opening of at least one pocket portion provided to the main rubber elastic body is fluid-tightly covered by the outer tubular mounting member so as to form a fluid chamber filled with a non-compressible fluid; and a seal rubber layer bonded to an inside peripheral face of the outer tubular mounting member and compressed between the outer tubular mounting member and the collar sleeve; wherein an externally fitted section of the outer tubular mounting member to the collar sleeve is formed by a tapered tube portion of the outer tubular mounting member, the tapered tube portion being assembled externally from a large-diameter opening thereof onto the collar sleeve and fastened thereto by means of diameter reduction process; at least one mating projection which projects diametrically inward is formed on an inside peripheral face of the tapered tube portion of the outer tubular mounting member, while the seal rubber layer having a thickness greater than a projecting height of the mating projection is formed covering the inside peripheral face of the outer tubular mounting member with the mating projection covered by the seal rubber layer; a location and projecting height of the mating projection are arranged so as to prevent an entry of another outer tubular mounting member into the large-diameter opening of the tapered tube portion during a pre-treatment executed before the seal rubber layer has been formed and before the outer tubular mounting member being fastened onto the collar sleeve; and the mating projection is formed at a location situated at the opening of the pocket portion in the outer tubular mounting member, and covering the pocket portion.