Fluid-filled cylindrical elastic mount having grooved movable block(s)

Abstract

A fluid-filled cylindrical elastic mount including an inner and an outer sleeve, an elastic body interposed between the two sleeves, at least one fluid chamber filled with a non-compressible fluid, and a flow-restricting member freely movably accommodated in the fluid chamber. A flow-restricting portion is provided around the flow-restricting member. The flow-restricting member has a pair of opposite end faces facing the axially opposite walls partially defining the fluid chamber. The flow-restricting portion includes a pair of axially spaced-apart sections defined by the axially opposite walls and the opposite end faces of the flow-restricting member, and a pair of radially spaced-apart sections defined by the flow-restricting member and the radially opposite walls of the fluid chamber. A sum of axial dimensions of the axially spaced-apart sections as measured in the axial direction of the mount is not more than 4 mm, and a sum of radial dimensions of the radially spaced-apart sections as measured in the radial direction is not more than 4 mm. At least one of the opposite end faces of the flow-restricting member has a plurality of grooves formed therein so as to extend in the radial direction. The grooves are spaced apart from each other in a circumferential direction of the mount, and communicate with a corresponding one of the axially spaced-apart sections in the axial direction, and the radially spaced-apart sections in the radial direction.