The device includes solid force transmission elements including two reinforcements, a damping body, a damping space including a damping chamber, the device being normally in a filling state where the damping space is filled with a damping liquid and may accidentally be in a state of loss of filling, which has an integrated element, specific and proprietary, palliative for the loss of filling, inactive in the state of filling and made active in the state of loss of filling where they bring the hydroelastic device to a state of stiffness of a high level, such element including a locking system including a locking part, integrally rigid, and a deformable load part controlled by the state of the device with respect to filling.

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 tunable hydraulic vibration damping mount comprises a universal outer housing, inner sleeve, main spring assembly, bottom compliance assembly, and inner bushing. Each of a plurality of flow channel members comprises a cylinder having a common inner diameter, a common outer diameter, and a helical track having a cross-sectional area and a length defining a volume of the helical track. The helical track of each flow channel member defines a different volume. A selected flow channel member is positioned between the inner bushing and the outer housing and between the main spring assembly and the bottom compliance assembly. The selected flow channel member provides a selected dynamic performance of the damping mount.

The device includes solid force transmission elements including two reinforcements, a damping body, a damping space including a damping chamber, the device being normally in a filling state where the damping space is filled with a damping liquid and may accidentally be in a state of loss of filling, which has an integrated element, specific and proprietary, palliative for the loss of filling, inactive in the state of filling and made active in the state of loss of filling where they bring the hydroelastic device to a state of stiffness of a high level, such element including a locking system including a locking part, integrally rigid, and a deformable load part controlled by the state of the device with respect to filling.

A tunable hydraulic vibration damping mount comprises a universal outer housing, inner sleeve, main spring assembly, bottom compliance assembly, and inner bushing. Each of a plurality of flow channel members comprises a cylinder having a common inner diameter, a common outer diameter, and a helical track having a cross-sectional area and a length defining a volume of the helical track. The helical track of each flow channel member defines a different volume. A selected flow channel member is positioned between the inner bushing and the outer housing and between the main spring assembly and the bottom compliance assembly. The selected flow channel member provides a selected dynamic performance of the damping mount.

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.

The present invention relates to a vibration damping device including an outer attachment member (10) connected to one of a vibration generating part and a vibration receiving part, an inner attachment member (20) connected to the other, and an elastic body (30) configured to connect the outer attachment member (10) and the inner attachment member (20), wherein the outer attachment member (10) is formed in a cylindrical shape, the inner attachment member (20) includes a plate-shaped rigid member (21) disposed in the outer attachment member (10) and an interior member (28) located in the outer attachment member (10), fixed to the rigid member (21), and formed of a synthetic resin material, and, at protruding portions (22, 23) of the rigid member (21) which protrude outward from the outer attachment member (10) in an axial direction along a central axis (0) of the outer attachment member (10), mounting holes (22a, 23a) which are open in a diameter direction orthogonal to the axial direction and have a fastening member configured to connect the protruding portions (22, 23) and the other of the vibration generating part and the vibration receiving part fitted thereinto are formed.

A liquid-sealed antivibration device is equipped with a shaft member and a sleeve member, an antivibration base body constituted by a rubber-like elastic body which elastically supports the sleeve member relative to the shaft member and which defines a first liquid chamber and a second liquid chamber between the shaft member and the sleeve member, and an orifice forming member made of a synthetic resin and disposed inside the sleeve member. The orifice forming member is formed with end surfaces on which a hole portion piercing along the axis of the shaft member opens, and an outer peripheral surface adhered closely to the sleeve member to form a groove portion becoming an orifice which makes the first liquid chamber communicate with the second liquid chamber, and recesses formed at corner portions defined by the end surfaces and the outer peripheral surface are connected to the hole portion.

The present invention relates to a vibration damping device including an outer attachment member (10) connected to one of a vibration generating part and a vibration receiving part, an inner attachment member (20) connected to the other, and an elastic body (30) configured to connect the outer attachment member (10) and the inner attachment member (20), wherein the outer attachment member (10) is formed in a cylindrical shape, the inner attachment member (20) includes a plate-shaped rigid member (21) disposed in the outer attachment member (10) and an interior member (28) located in the outer attachment member (10), fixed to the rigid member (21), and formed of a synthetic resin material, and, at protruding portions (22, 23) of the rigid member (21) which protrude outward from the outer attachment member (10) in an axial direction along a central axis (O) of the outer attachment member (10), mounting holes (22a, 23a) which are open in a diameter direction orthogonal to the axial direction and have a fastening member configured to connect the protruding portions (22, 23) and the other of the vibration generating part and the vibration receiving part fitted thereinto are formed.

The present invention relates to a bushing, preferably a hydraulic bushing, having an inner part, an outer part, at least one supporting spring which connects the inner part and the outer part radially to one another, and at least one stop element which is arranged between the inner part and the outer part, is connected to the inner part or the outer part, and is embodied in such a way that the stop element can limit the radial spring travel (D) between the inner part and the outer part in a predetermined fashion. The bushing is characterized in that the stop element is elastically connected to the inner part or to the outer part in such a way that the stop element can be elastically twisted relative to the inner part or relative to the outer part.