摘要:
A fluid-filled elastic mount having a main fluid chamber partially defined by an elastic body between first and second structures, a variable-volume chamber communicating with the main fluid chamber through a passage, and an air chamber at least partially defined by a flexible diaphragm partially defining the main fluid chamber. The main fluid chamber has a flow-restricting portion partially defined by a flow-restricting member disposed in the main fluid chamber. A pressure in the air chamber adjacent to the main fluid chamber is controlled by the pressure control device.
摘要:
A fluid-filled elastic mount wherein an elastic body elastically connecting a first and a second support partially defines a fluid chamber filled with a non-compressible fluid. The elastic mount includes an oscillating plate which partially defines the fluid chamber and which is displaceable to change a pressure of the fluid in the fluid chamber, and a permanent magnet disposed on one of opposite sides of the oscillating plate remote from the fluid chamber. A first and a second yoke member are connected to opposite magnetic pole faces of the magnet and cooperate with the magnet to define a closed magnetic circuit. The yoke members define therebetween an annular gap in the magnetic circuit, in which an annular moving coil is received. The coil is fixed to the oscillating plate, to oscillate the oscillating plate upon energization of the coil. Also disclosed is a method of manufacturing the elastic mount, in which a blank for the magnet is magnetized together with the yoke members after the blank and yoke members are assembled into a unit.
摘要:
A fluid-filled elastic mount including first and second support members and an elastic body interposed between these members for elastic connection thereof. The elastic mount has a pressure-receiving chamber partially defined by the elastic body, first and second equilibrium chambers defined by first and second flexible diaphragms and communicating with the pressure-receiving chamber through first and second orifice passages, respectively. The second orifice passage has a higher ratio of the cross sectional area to the length than the first orifice passage. The present elastic mount further includes an elastic restriction member which is opposed to the second diaphragm and cooperates with the diaphragm to define a vacuum-receiving chamber for allowing elastic deformation of the second diaphragm. In operation, a vacuum pressure is applied where appropriate to the vacuum-receiving chamber, to draw the second diaphragm onto the elastic restriction member, so as to restrict free deformation of the second diaphragm and permit oscillation of the diaphragm with the elastic restriction member.
摘要:
A fluid-filled elastic mount including first and second support members and an elastic body interposed between these support members for elastically connection thereof. The elastic mount has a pressure-receiving chamber partially defined by the elastic body, first and second equilibrium chambers defined by first and second flexible diaphragms and communicating with the pressure-receiving chamber through first and second orifice passages, respectively, and a vacuum-receiving chamber which is separated by the second diaphragm from the second equilibrium chamber. In operation, the vacuum-receiving chamber is selectively subjected to a sub-atmospheric pressure or exposed to the atmosphere to control the elastic deformation of the second diaphragm. The elastic mount further has an auxiliary air chamber which cooperates with the vacuum-receiving chamber to accommodate a volumetric change of the second equilibrium chamber when the vacuum-receiving chamber is exposed to the atmosphere.
摘要:
A fluid-filled elastic mount including mutually spaced-apart first and second support members, and an elastic body for elastically connecting the first and second support members. The elastic mount has a plurality of fluid chambers filled with a non-compressible fluid and communicating with each other through an orifice passage or passages, and an air-tight operating chamber which is formed on one side of a flexible membrane remote from the corresponding fluid chamber. This flexible membrane consists of a fluid-impermeable first flexible layer which is corrosion-resistant to the non-compressible fluid, and a fluid-impermeable second flexible layer which is corrosion-resistant to gasoline. These flexible layers are superposed on each other such that the first flexible layer is exposed to the fluid chamber while the second flexible layer is exposed to the operating chamber. The elastic mount further includes a pressure control device for applying a vacuum pressure to the operating chamber so as to restrict elastic deformation of the flexible membrane.
摘要:
A fluid-filled elastic mount including first and second support members and an elastic body interposed between these members for elastic connection thereof. The elastic mount has a pressure-receiving chamber partially defined by the elastic body, first and second equilibrium chambers defined by first and second flexible diaphragms and communicating with the pressure-receiving chamber through first and second orifice passages, respectively. The second orifice passage has a higher ratio of the cross sectional area to the length than the first orifice passage. The present elastic mount further includes a pressure control device for selectively applying a vacuum pressure to a vacuum-receiving chamber which lies behind the second equilibrium chamber via the second diaphragm, to thereby restrict elastic deformation of the second diaphragm. A rigid restriction member is secured to a part of the second diaphragm which is opposed to an opening of an air passage through which the vacuum pressure is applied to the vacuum-receiving chamber.
摘要:
A fluid-filled elastic mount including an elastic body elastically connecting a first and a second support, and partially defining a fluid chamber filled with a non-compressible fluid. The elastic mount includes an oscillating plate which partially defines the fluid chamber and which is displaceable to change a pressure of the fluid in the fluid chamber, and a permanent magnet disposed on one of opposite sides of the oscillating plate remote from the fluid chamber. A first and a second yoke member are connected to opposite magnetic pole faces of the magnet by a plastic material, and cooperate with the magnet to define a closed magnetic circuit. The yoke members define therebetween an annular gap in the magnetic circuit, in which a magnetic fluid and an annular moving coil are received. The magnetic fluid includes magnetic particles dispersed in a liquid medium. The coil is fixed to the oscillating plate, to oscillate the oscillating plate upon energization of the coil.
摘要:
A fluid-filled elastic mount wherein an elastic body elastically connecting first and second supports partially defines a fluid chamber filled with a non-compressible fluid. The elastic mount includes an oscillating plate which partially defines the fluid chamber and which is displaceable to change a pressure of the fluid in the fluid chamber, and a permanent magnet disposed on one of opposite sides of the oscillating plate remote from the fluid chamber. The permanent magnet is made of a plastic magnetic material including a magnetic material and a plastic material as a binder for the magnetic material. First and second yoke members are held in contact with opposite magnetic pole faces of the magnet, and cooperate with the magnet to define a close magnetic circuit. The yoke members define therebetween an annular gap in the magnetic circuit, in which an annular moving coil is received. The coil is fixed to the oscillating plate, to oscillate the oscillating plate upon energization of the coil. Also disclosed is a method of manufacturing the elastic mount, in which a spacing between the yoke members is filled with the plastic magnetic material in a plasticized state, which is then solidified to provide the permanent magnet.
摘要:
A fluid-filled elastic mount is disclosed which includes a first and a second support member, an elastic body for interconnecting the support members and partially defining a pressure-receiving chamber, and a partition structure which cooperates with a first and a second flexible diaphragm to define a first and a second equilibrium chamber. The elastic mount has a first and a second orifice passage for fluid communication between the pressure-receiving chamber and the respective equilibrium chambers. The elastic mount further has an air chamber on one side of the second diaphragm remote from the second equilibrium chamber, and an operating chamber separated from the air chamber by a biasing elastic member. The operating chamber is subjected to a vacuum pressure as needed to move the second diaphragm away from the opening of the second orifice passage, which is normally closed by the second diaphragm due to a biasing force of the biasing elastic member. The elastic mount further includes a rigid planar member interposed between a top plate of the biasing elastic member and the second diaphragm. Between the rigid planar member and the top plate of the biasing elastic member is formed an air passage for permitting an air flow into a central portion of abutting faces thereof upon abutting contact therebetween.
摘要:
A fluid-filled active vibration damping device including: (a) an elastsic body which elastically connects first and second mounting members and which partially defines a fluid chamber filled with a non-compressible fluid; (b) an oscillating member which partially defines the fluid chamber; (c) an electromagnetic actuator for oscillating the oscillating member; (d) a stabilizing member which is disposed on the side of the oscillating member that is remote from the fluid chamber, and which is opposed to and spaced apart from the oscillating member in an oscillation direction of the oscillating member; (e) first and second elastic supports through which the respective oscillating and stabilizing members are elastically supported by the second mounting member; and (f) a connecting member which connects the oscillating and stabilizing members, so as to provide a displaceable assembly which is displaceable relative to the second mounting member.