A pair of fluid chambers in which incompressible fluid is sealed and a pair of orifice-forming members that allows one fluid chamber to communicate with the other fluid chamber are arranged between an inner cylinder and an outer cylinder. The orifice-forming member has a longitudinal groove that communicates with respective fluid chambers, an orifice channel, and a liquid storage section that allows the longitudinal groove to communicate with the orifice channel. The liquid storage section is formed wider and deeper than the orifice channel.

The present invention relates to a hydraulic bushing, including a main spring and a cylindrical outer housing. The main spring comprising: a core shaft; a first rubber body arranged on an outer wall of the core shaft, wherein two liquid chambers diametrically opposite to and spaced from each other are formed on the first rubber body, each liquid chamber extending throughout the first rubber body along an axial direction thereof; and a sleeve mounted on an outer wall of the first rubber body, a groove being formed in an outer wall of the sleeve. The main spring is disposed inside an inner chamber of the outer housing, and a flow channel for connecting the two liquid chambers with each other is formed between the outer housing and the sleeve through the groove. The hydraulic bushing not only can assure stable operation of the vehicle in a straight running state, but also can reduce abrasion of a wheel and a rail in a curve running state.

A hydroelastic bearing is provided. The hydroelastic bearing includes a spring function member and an outer sleeve coupled to the spring function member, wherein the spring function member includes an inner mounting connection and at least two working chambers which are filled with a damping fluid and which are connected via at least one damping channel, so that the damping fluid flows from one of the working chambers at least partly to the other via the at least one damping channel upon displacement of the inner mounting connection with respect to the outer sleeve, wherein the working chambers are further connected via at least one decoupling channel, wherein a decoupling element is arranged in a flow path of the decoupling channel, and wherein the decoupling channel and the decoupling element are at least partly arranged in a decoupling recess in the outer sleeve provided therefor.

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 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.

A hydraulic damping bearing comprising an axially extending inner element, an elastomer body, a cage element that is embedded at least in sections in the elastomer body, wherein the elastomer body elastically connects the cage element and the inner element with one another, an outer sleeve that wraps around the inner element, the cage element and the elastomer body, at least a first, a second, a third and a fourth fluid chamber arranged respectively between the outer sleeve and the inner element that are connected by fluid channels. Each of the at least flour fluid chambers is designed and set up in such a manner that, in case of a relative displacement of the inner element and of the cage element in a first direction and of a relative displacement of the inner element and of the cage element in a second direction, it is involved in performing damping tasks.

A hydro bushing includes an outer pipe, an inner pipe disposed within the outer pipe and spaced apart from the outer pipe, an elastic body disposed between the outer pipe and the inner pipe and provided with a liquid chamber portion accommodating liquid therein, and a nozzle disposed between the outer pipe and the elastic body and including a stopper extending toward the liquid chamber portion such that a portion of an internal surface of the nozzle protrudes to be in contact with the liquid chamber portion. A contact end of the stopper is formed to have a surface corresponding to deformation of the elastic body caused by conical movement.