A vehicle vibration dampening mount assembly includes a housing, a resilient material, a sleeve and a solenoid. The resilient material has an outer portion attached to an interior surface of the housing and defines first and second chambers with a fluid passage extending therebetween. The sleeve is disposed within the housing and is attached to a central portion of the resilient material extending from a first end to a second end of the housing. The solenoid has a fixed portion mounted to the first end of the housing and a movable portion fixedly attached to the sleeve for movement therewith. The fixed portion has an electromagnetic coil arranged concentrically around the movable portion. The solenoid is configured to selectively move the moveable portion, the sleeve and the central portion of the resilient material in response to electrical current being provided to the electromagnetic coil.

A liquid-filled bushing (1) includes an inner tube (11) and an outer member (12). The outer member (12) defines a pair of liquid chambers between the outer member (12) and the inner tube (11), and an orifice portion (13) in which an orifice passage (24) which communicates with the liquid chambers is formed. An elastic body (14) which elastically connects together the orifice portion (13) and the inner tube (11) is provided. The pair of liquid chambers are individually disposed on both sides between which the inner tube (11) is interposed. A first protrusion portion (11a) which protrudes outward in the radial direction and is fitted into the elastic body is formed in the inner tube (11), and a second protrusion portion (28) which protrudes inward in the radial direction and is fitted into the elastic body (14) is formed in the orifice portion (13). The first protrusion portion (11a) and the second protrusion portion (28) are disposed in both portions between the pair of liquid chambers adjacent in a circumferential direction such that positions of the portions in the circumferential direction coincide with each other and positions of the portions in the direction of the center axis are different from each other.

Disclosed is a hydraulic bushing and a rail vehicle. The hydraulic bushing comprises: a core shaft; a sleeve mounted on the core shaft, wherein a first rubber body is filled in a space formed between the core shaft and the sleeve, and a groove is provided on an outer surface of the sleeve; and an outer housing, which is mounted on the sleeve through press fit. Two liquid chambers for accommodating liquids are provided diametrically opposite to each other on the first rubber body, and the groove and the outer housing together define a flow channel, through which the two liquid chambers communicate with each other. Use of the hydraulic bushing on the rail vehicle not only can assure stable operation of the vehicle in a straight running state thereof, but also can reduce abrasion of a wheel and a rail in a curve running state.

A spring functional component for a hydroelastic bearing (1), comprising an inner mounting connection and comprising an outer mounting connection that radially surrounds the inner mounting connection, comprising a spring body which at least partially delimits at least two working chambers (21, 23) for receiving a damping fluid and which couples the inner mounting connection and outer mounting connection to one another in order to permit a relative movement between the inner mounting connection and the outer mounting connection, and comprising a supporting frame (7) which surrounds the inner mounting connection and which is composed of a rigid material such as plastic or metal, wherein each of the at least two working chambers (21, 23) issues into at least one radial opening which is open to the radially outer side of the spring functional component and which can be closed off by a connection part for coupling to the outer mounting connection, wherein at least one radially inwardly extending radial stop is fastened to a radial inner side (13) of the supporting frame (7) in order to limit the relative mobility of the mounting connections at least in a radial direction.

Disclosed is a hydraulic bushing and a rail vehicle. The hydraulic bushing comprises: a core shaft; a sleeve mounted on the core shaft, wherein a first rubber body is filled in a space formed between the core shaft and the sleeve, and a groove is provided on an outer surface of the sleeve; and an outer housing, which is mounted on the sleeve through press fit. Two liquid chambers for accommodating liquids are provided diametrically opposite to each other on the first rubber body, and the groove and the outer housing together define a flow channel, through which the two liquid chambers communicate with each other. Use of the hydraulic bushing on the rail vehicle not only can assure stable operation of the vehicle in a straight running state thereof, but also can reduce abrasion of a wheel and a rail in a curve running state.

A vehicle vibration dampening mount assembly includes a housing, a resilient material, a sleeve and a solenoid. The resilient material has an outer portion attached to an interior surface of the housing and defines first and second chambers with a fluid passage extending therebetween. The sleeve is disposed within the housing and is attached to a central portion of the resilient material extending from a first end to a second end of the housing. The solenoid has a fixed portion mounted to the first end of the housing and a movable portion fixedly attached to the sleeve for movement therewith. The fixed portion has an electromagnetic coil arranged concentrically around the movable portion. The solenoid is configured to selectively move the moveable portion, the sleeve and the central portion of the resilient material in response to electrical current being provided to the electromagnetic coil.

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.

An antivibration device capable of attaining damping performance in a comparatively broad frequency band range is provided. In the antivibration device, between an inner cylinder and an outer cylinder, formed are a first liquid chamber, a second liquid chamber, and a third liquid chamber. There are provided a first orifice passage that makes the first liquid chamber and the second liquid chamber communicate with each other, and a second orifice passage that makes one of the first liquid chamber and the second liquid chamber and the third liquid chamber communicate with each other.

An anti-vibration device has excellent durability while reducing the amount of elastic deformation of an elastic body to a desired value. The disclosed anti-vibration device (1) includes an inner member (2), an outer member (3), an elastic body (4) that allows relative displacement between the inner member (2) and the outer member (3), a pair of first fluid chambers (C.sub.1) in communication with each other via first restricting passages (r.sub.1), and a second fluid chamber (C.sub.2) in communication with an auxiliary fluid chamber (C.sub.3) via a second restricting passage (r.sub.2). The first fluid chambers (C.sub.1) are disposed at opposite sides of the inner member (2). The second fluid chamber (C.sub.2) is disposed in an orthogonal direction (Z) that is orthogonal to a sandwiching direction (Y) and to a direction along the axis (O) of the inner member (2). Stopper parts (S) are provided in the first fluid chambers (C.sub.1).

An antivibration device capable of attaining damping performance in a comparatively broad frequency band range is provided. In the antivibration device, between an inner cylinder and an outer cylinder, formed are a first liquid chamber, a second liquid chamber, and a third liquid chamber. There are provided a first orifice passage that makes the first liquid chamber and the second liquid chamber communicate with each other, and a second orifice passage that makes one of the first liquid chamber and the second liquid chamber and the third liquid chamber communicate with each other.