A fluid-filled tubular vibration-damping device comprising: an inner shaft member and an outer tube member connected by a main rubber elastic body so as to provide a sealed zone filled with a non-compressible fluid therebetween; and a partition wall partitioning the sealed zone axially. An outer peripheral side of the partition wall is fixed to the outer tube member while an inner peripheral side of the partition wall is constituted by an annular partition wall rubber disposed around the inner shaft member in a movable manner axially. Sealing tube parts are integrally formed with an inner peripheral portion of the partition wall rubber and project toward axially opposite sides. Fitting parts thicker than the sealing tube parts are integrally formed with distal ends of the respective sealing tube parts and are externally fitted around the inner shaft member in a slidable manner.

A diaphragm transfer device sucks and transfers a diaphragm that includes a first protrusion protruding in a direction perpendicular to the surface of the diaphragm. The diaphragm transfer device is provided with: a placing table on which the diaphragm is placed in such an orientation that the first protrusion faces downward; and a suction pad that sucks the diaphragm, placed on the placing table, from above on the outer circumferential side of the protrusion. The placing table includes an annular pedestal facing an outer-circumferential-side thick portion of the diaphragm, the thick portion being sucked by the suction pad, and a second recess recessed downward on the inner diameter side of the pedestal. The whole first protrusion of the diaphragm is located inside the second recess in a top view.

A hydraulic mount assembly includes a mount body defining a cavity. A powertrain includes a dynamic mass, and a structure that supports the dynamic mass. The assembly is attached to the structure and supports the dynamic mass. A first plate is fixed relative to the mount body inside the cavity to separate the cavity into a first chamber and a second chamber. The first plate defines a plurality of first passages that fluidly connects the first and second chambers. A decoupler is disposed between the first and second chambers. An actuator is coupled to the first plate. The decoupler is movable in response to actuation of the actuator. The decoupler abuts the first plate when in a locked position to prevent fluid communication through the first passages. The decoupler is movable relative to the first plate when in an unlocked position to allow fluid communication through the first passages.

A partition member of an anti-vibration hydraulic mount includes a first channel and a second channel between the working chamber and the compensating chamber. The partition member includes a membrane secured in a receiving cavity. The membrane divides the receiving cavity into two sub-spaces separated fluidically from each other. The membrane comprises a closing device configured to have an open configuration, in which the closing device is spaced apart from the central opening, and a closed configuration, in which the closing device abuts against the central opening to close the central passageway.

A chamber device for a liquid composite spring, includes: an outer wall; an upper liquid chamber formed in an upper portion of the outer wall, the upper liquid chamber being filled with liquid; and a lower liquid chamber formed in a lower portion of the outer wall, the lower liquid chamber being filled with liquid and in communication with the upper liquid chamber. A bottom of the outer wall is provided with a sealing member for sealing the lower liquid chamber. The sealing member is deformable, so that the lower liquid chamber is formed as a flexible chamber. The chamber device for the liquid composite spring has a rigid outer wall and a flexible sealing member. The volume and shape of the lower liquid chamber can be changed through the flexible sealing member, so that the lower liquid chamber is formed as a flexible chamber.

A multi-axis isolator configured to isolate a payload from unwanted vibrations and shocks includes a housing, at least one pair of radial isolators in the housing, and an axial isolator in the housing. Each radial isolator includes an elastomer dome, a chamber at least partially defined by the elastomer dome, and a fluid in the chamber. The multi-axis isolator also includes a fluid track placing the chambers of the radial isolators in fluid communication with each other. The axial isolator includes an elastomer dome, a backpressure membrane, a primary chamber, a backpressure chamber, a fluid in the primary and backpressure chambers, a conduit placing the primary chamber in fluid communication with the backpressure chamber. The multi-axis isolator also includes a shaft configured to be connected to the payload. The pair of radial isolators and the axial isolator are coupled to the shaft.

An engine mount is provided to change properties based on magnitudes of amplitudes input to the engine mount. The engine mount includes a membrane having a central portion and an outer circumferential portion. Upper and lower orifice brackets are mounted between an insulator and a diaphragm to divide an interior of a main casing into an upper liquid chamber and a lower liquid chamber. The upper and lower orifice brackets define a flow path that enables a fluid to flow between the upper and lower liquid chambers and define a receiving space in which the membrane is movable in a vertical direction. An air chamber is connected to a lower side of the lower orifice bracket and allows a lower portion of the membrane to be exposed to air.

A hydraulic bearing for supporting an assembly of a motor vehicle includes a carrying bearing portion and a support portion. In embodiments, a working chamber that is fillable with hydraulic fluid is formed in the carrying bearing portion, and a compensating chamber that is fillable with hydraulic fluid is formed in the support portion. A nozzle disc, through which the flow can pass and which delimits the working chamber from the compensating chamber, may be arranged between the carrying bearing portion and the support portion, and a damping duct for the fluidic communication of the working chamber with the compensating chamber may be formed in the nozzle disc. In embodiments, the two chambers, the damping duct, and the hydraulic fluid may form a first damping system for damping vibrations of lower frequencies and a second damping system may be formed for damping vibrations of higher frequencies.

A method for sealing a liquid composite spring, includes the steps of: placing a sleeve-shaped outer wall around an upper portion of a core shaft, and forming an upper liquid chamber and a lower liquid chamber inside the outer wall; and arranging a sealing member at a bottom of the outer wall to seal the lower liquid chamber, wherein the sealing member is made of flexible material. The liquid composite spring is provided with the rigid outer wall and the flexible sealing member. The volume and shape of the lower liquid chamber can be changed through the flexible sealing member, so that the chamber is formed as a flexible chamber.

An engine mount is provided to change properties based on magnitudes of amplitudes input to the engine mount. The engine mount includes a membrane having a central portion and an outer circumferential portion. Upper and lower orifice brackets are mounted between an insulator and a diaphragm to divide an interior of a main casing into an upper liquid chamber and a lower liquid chamber. The upper and lower orifice brackets define a flow path that enables a fluid to flow between the upper and lower liquid chambers and define a receiving space in which the membrane is movable in a vertical direction. An air chamber is connected to a lower side of the lower orifice bracket and allows a lower portion of the membrane to be exposed to air.