A hydraulic composite bushing includes: a core shaft, with a continuously spiral fluid channel groove; a rubber member, arranged around the core shaft, and having two recesses formed radially outside of the fluid channel groove and radially opposite to each other; a support ring arranged around the rubber member; an outer cover pressing on the support ring from a radially outer side thereof; and a sealing device provided at each end of a fluid channel tube arranged within the fluid channel groove. Two ends of the fluid channel tube pass through the rubber member radially to extend into two hydraulic chambers respectively, with the hydraulic chambers in communication with each other through the fluid channel tube. One end of the sealing device is arranged inside the flow channel groove and the other end thereof passes through the rubber member to extend into the hydraulic chambers.

A hydraulic composite bushing, a flow channel for same, and a method for forming the flow channel, wherein the hydraulic composite bushing includes: a core shaft; a rubber member, arranged on an outer peripheral surface of the core shaft and provided with two recesses diametrically opposite to each other; two support rings arranged around the rubber member; and an outer casing press-fitted on the support rings from a radially outer side thereof through interference fit. The outer casing covers the recesses to form two hydraulic chambers for accommodating hydraulic fluid between the rubber member and the outer casing, and the support ring is provided with a flow channel for the hydraulic fluid, so that two hydraulic chambers are in communication with each other via the flow channel. A sealing device is provided at a connection between the outer casing and each of the recesses to seal each hydraulic chamber.

A hydraulic mount includes a first housing member, a second housing member connected to the first housing member, an inner tube disposed at least partially in the first housing member, an inner sleeve connected to the inner tube, an outer sleeve disposed at least partially around the inner sleeve, and a flexible member disposed at least partially in the first housing member and connected to the outer sleeve. The inner sleeve may include an outer surface and a fluid channel disposed in the outer surface. The flexible member may cooperate with at least one of the first housing member and the second housing member to provide a first fluid chamber and a second fluid chamber. The first fluid chamber and the second fluid chamber may be in fluid communication via the fluid channel.

The present invention provides a liquid-filled vibration isolator with improved durability. The liquid-filled vibration isolator includes a shaft unit, a first unit, an elastic body coupling the first unit and shaft unit, and a second unit mounted radially outside the first unit. The first unit includes a pair of annular elements, a pair of coupling elements coupling the annular elements, while the elastic body includes outer face portions bonded to outer surfaces of the coupling elements. The outer face portions include lips making contact with the second unit, and first segments making contact with the second unit on areas larger than the lips. The second unit restrains the annular elements along the entire circumferences, and compresses the lips and first segments in the radial direction.

A fluid-filled tubular vibration-damping device including: an inner shaft member and an outer tube member connected by a main rubber elastic body defining a non-compressible fluid filling region partitioned into two axially-opposite fluid chambers connected by an orifice passage, by a partition wall rubber fixed to a side of the inner shaft member in an inner periphery thereof and inserted in a side of the outer tube member at an outer periphery thereof so that the partition wall rubber is axially movable relative to the side of the outer tube member; a seal tubular part formed integrally at the outer periphery of the partition wall rubber to axially protrude to opposite sides; and a thicker annular fitting part formed integrally at each protruding tip of the seal tubular part, and fitted in the side of the outer tube member, slidably along it.

The present invention provides a liquid-filled vibration isolator with improved durability. The liquid-filled vibration isolator includes a shaft unit, a first unit, an elastic body coupling the first unit and shaft unit, and a second unit mounted radially outside the first unit. The first unit includes a pair of annular elements, a pair of coupling elements coupling the annular elements, while the elastic body includes outer face portions bonded to outer surfaces of the coupling elements. The outer face portions include lips making contact with the second unit, and first segments making contact with the second unit on areas larger than the lips. The second unit restrains the annular elements along the entire circumferences, and compresses the lips and first segments in the radial direction.

A hydraulic mount includes a first housing member, a second housing member connected to the first housing member, an inner tube disposed at least partially in the first housing member, an inner sleeve connected to the inner tube, an outer sleeve disposed at least partially around the inner sleeve, and a flexible member disposed at least partially in the first housing member and connected to the outer sleeve. The inner sleeve may include an outer surface and a fluid channel disposed in the outer surface. The flexible member may cooperate with at least one of the first housing member and the second housing member to provide a first fluid chamber and a second fluid chamber. The first fluid chamber and the second fluid chamber may be in fluid communication via the fluid channel

A fluid-filled tubular vibration-damping device including: an inner shaft member and an outer tube member connected by a main rubber elastic body defining a non-compressible fluid filling region partitioned into two axially-opposite fluid chambers connected by an orifice passage, by a partition wall rubber fixed to a side of the inner shaft member in an inner periphery thereof and inserted in a side of the outer tube member at an outer periphery thereof so that the partition wall rubber is axially movable relative to the side of the outer tube member; a seal tubular part formed integrally at the outer periphery of the partition wall rubber to axially protrude to opposite sides; and a thicker annular fitting part formed integrally at each protruding tip of the seal tubular part, and fitted in the side of the outer tube member, slidably along it.

A method of manufacturing a fluid-filled, vibration damping bushing assembly, comprising the steps of: Forming, in a first molding step, a bushing member comprising a elastomeric core having an axial bore therethrough, the elastomeric core having a circumferential exterior surface including at least one fluid chamber, the circumferential exterior surface being partially surrounded by a metal cylinder vulcanized to the elastomeric core in the first molding step; reducing the outer diameter of the bushing member following the first molding step; in a subsequent, second molding step, mold-bonding one or more polymer sealing elements to an exterior circumferential surface of the metal cylinder; in a next step, disposing at least one fluid-channel member over a portion of the exterior circumferential surface of the metal cylinder; and providing a fluid in the at least one fluid chamber, and fluidly-sealing the bushing member, the one or more polymer sealing elements, and the at least one fluid-channel member, within a housing.

A sleeve bearing for being received in an outer sleeve includes an inner part which extends in the axial direction, a bearing body, and a cage which encloses the bearing body circumferentially. The bearing body encloses the inner part, is made from an elastic material, and has at least two chambers. The cage is formed from at least two cage parts, the spacing of which can be varied in the radial direction. A sealed joint area is provided between the cage parts.