A vibration isolator includes first and second mounting members; an elastic body connecting the mounting members; a partition member partitioning a liquid chamber in the first mounting member into a primary liquid chamber using the elastic body as a part of a wall surface thereof and a secondary liquid chamber; and a movable member housed in a housing chamber provided within the partition member, the movable member being deformable or displaceable in an axial direction of the first mounting member. The partition member includes communicating holes that extend from a portion of the partition member which is exposed to the primary liquid chamber or the secondary liquid chamber toward an inside of the partition member and are opened toward the movable member. The partition member is equipped with partition plate parts dividing the housing chamber from the primary liquid chamber and dividing the housing chamber from the secondary liquid chamber.

A fluid-filled vibration-damping device including two chambers partitioned by a partition member and mutually communicated by an orifice passage and a communication passage which is provided at the partition member, with a movable rubber film disposed in the communication passage so that each pressure of the chambers is applied to the respective face of the movable rubber film, wherein the movable rubber film includes a thick-walled outer peripheral retaining part formed at its outer rim and clamped by the partition member and reinforcing crosspieces projecting on its face and extending inward from the outer peripheral retaining part to mutually intersect, and a width dimension of at least one of the reinforcing crosspieces is made small in a vicinity of the intersection part to provide a narrow part by which the movable rubber film has a low-spring area in the vicinity of the intersection part.

A hydraulically damping assembly bearing has two fluid-filled chambers which lie axially opposite each other and are hydraulically connected by a channel. A first chamber forms a working chamber enclosed by a bearing spring body and a second chamber forms a compensating chamber enclosed by a bellows. The compensating chamber has an axially extending inner wall encircling an interior. The bearing includes an annular body axially between the working and compensating chambers, enclosing an axial throughopening opening into the working chamber and closed by a membrane integrally formed with the inner wall of the bellows. The membrane has a central region defined by the inner wall and together with the inner wall delimits the interior. The membrane has a collar region encircling the central region and integrally formed with the central region. The outer circumference of the collar is rigidly connected to the annular body and/or the spring body.

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 switchable hydraulic bearing for mounting of a motor-vehicle assembly comprises a support bearing and a mount connected by a support spring, and a working chamber and an equalization chamber fillable with damping liquid that are spatially separated by a separating wall and connected by a damping channel in the separating wall. The separating wall may comprise a nozzle cage with two adjacent nozzle discs provided with an axial spacing. A diaphragm of rubber-elastic material may be provided in a gap between the nozzle discs. The diaphragm may be switchable by a switching device comprising an elastic lever disc axially adjacent to the second nozzle disc. An electromagnet may connect to the lever disc and can adjust the lever disc between a first position, permitting axial play of the diaphragm in the gap, and a second position, acting on the second nozzle disc and clamping the diaphragm between nozzle discs.

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 fluid-filled vibration damping device including: a pressure-receiving chamber; an equilibrium chamber; a partition partitioning the two chambers while including a communication aperture connecting the two chambers; and a rubber elastic plate arranged in the partition while covering the communication aperture. The rubber elastic plate includes: an outside contact-retainer part provided partially along a circumference at an outer edge of the rubber elastic plate while being held overlapped with the partition; an elastic deformation zone provided circumferentially between the outside contact-retainer part to become apart from the partition based on a pressure differential between the two chambers thereby allowing a fluid flow through the communication aperture; and a radial reinforcing rib projecting from a surface of the rubber elastic plate and extending radially outward from an inside contact-retainer part that is held overlapped with the partition toward the elastic deformation zone.

A membrane for a hydraulically damping mount includes a first leg, a second leg and a base interconnecting the two legs. In embodiments, in an average thickness of one of the two legs is at least twice as thick as that of the other leg. A hydraulically damping mount with such a membrane is also disclosed.

The vibration-damping device includes a tubular first attachment member; a second attachment member; an elastic body that couples the first attachment member and the second attachment member to each other; and a partition member that partitions a liquid chamber within the first attachment member into a main liquid chamber having the elastic body in a portion of a barrier wall thereof, and an auxiliary liquid chamber. The partition member includes a membrane; a first orifice passage that includes a main liquid chamber-side passage, and an opposite liquid chamber-side passage; and a damping force difference increasing part that restrains any one of swelling deformation of the membrane toward the main liquid chamber side and swelling deformation of the membrane toward the opposite liquid chamber and increases a difference between a damping force generated when a bound load is input and a damping force generated when a rebound load is input.