Abstract: An example mount assembly includes a first chamber and a second chamber. The assembly also includes an inertia track having a central opening defining an axis. The inertia track defines a passage in fluid communication with the first chamber and the second chamber. The inertia track is moveable along the axis.

Abstract: A liquid-sealed vibration damping device is provided that allows an outer cylindrical member to have a substantially uniform interference margin in the circumferential direction, while improving an assembling property. A second mounting member mounted on a non-vibration source includes: a first frame in a cylindrical shape that is connected to a lower portion of an insulator; a second frame in a cylindrical shape that holds a partition member arranged below the insulator; and a connector that connects the first frame with the second frame. The connector includes: engaging parts that are arranged on the first frame; and elastic hook parts that are arranged on the second frame. The elastic hook parts are arranged at intervals on each of main frame parts in the circumferential direction thereof, and the elastic hook parts arranged on corners have lower rigidity than those arranged on the main frame parts.

Abstract: A fluid-filled vibration damping device including a hollow buffer body with an inner space. The hollow buffer body is housed in a housing space of a partition member to come in contact with wall inner surfaces of the housing space on sides of a pressure-receiving chamber and an equilibrium chamber, while stores a movable member in the inner space thereof. Liquid pressure of the pressure-receiving chamber is applied to a first face of the movable member by having a first window portion formed in the buffer body communicated with a first communication hole of the housing space while liquid pressure of the equilibrium chamber is applied to a second face of the movable member by having a second window portion formed in the buffer body communicated with a second communication hole of the housing space.

Abstract: In an elastic partition member, a movable diaphragm outer circumferential section for supporting an outer circumference of an elastic movable diaphragm is formed integral with a relief valve. The elastic movable diaphragm is integrally formed with the elastic movable diaphragm. An upward circular arc projection that extends upwardly is provided on an upper part of the movable diaphragm outer circumferential section, and is fixed by a fixing portion provided in an upper member of a partition. A portion in the vicinity of a base portion of the relief valve is formed as a rectilinear unsupported portion that is flush with the elastic movable diaphragm. The base portion extends rectilinearly along the unsupported portion. When being opened, the relief valve is easily bent by the rectilinear base portion and is elastically deformable large enough to extend above the unsupported portion.

Abstract: A vibration-damping device (10) in the present application includes a first limiting passage (51) and a second limiting passage (52). The first limiting passage (51) includes pressure loss units (53a, 53b). Each of the pressure loss units (53a, 53b) is provided with an intermediate chamber (55), a first communication passage (57), and a second communication passage (58). An opening axis (L1) of a first opening (59) that opens toward the inside of the intermediate chamber (55) in the first communication passage (57) and an opening axis (L2) of a second opening (60) that opens toward the inside of the intermediate chamber (55) in the second communication passage (58) are offset from each other. At least one of the first opening (59) and the second opening (60) opens toward a wall surface that defines the intermediate chamber (55).

Abstract: A vibration isolator (10) includes a first attachment member (11), a second attachment member (12), an elastic body (13), and a partition member (16) configured to partition a liquid chamber in the first attachment member in which a liquid (L) is sealed into a first liquid chamber (14) and a second liquid chamber (15). A communicating passage (30) configured to communicate the first liquid chamber with the second liquid chamber is provided in the partition member. A flow changing protrusion (31) is provided at an inner circumferential surface (30a) of the communicating passage. A guide surface (32) opposite to the communicating passage and intersecting the axial direction (O) of the communicating passage is provided at the flow changing protrusion. A passing hole (34) which is open toward both sides in the axial direction is formed by a projecting end (31b) of the flow changing protrusion and another place on the inner circumferential surface (30b) of the communicating passage.

Abstract: 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 (C1) in communication with each other via first restricting passages (r1), and a second fluid chamber (C2) in communication with an auxiliary fluid chamber (C3) via a second restricting passage (r2). The first fluid chambers (C1) are disposed at opposite sides of the inner member (2). The second fluid chamber (C2) 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 (C1).

Abstract: The present invention is a vibration-damping device (10, 60, 80) which is provided with: a first attachment member (11) joined to one of a vibration generating unit and a vibration receiving unit and a second attachment member (12) joined to an other thereof; an elastic body which joins the first attachment member (11) to the second attachment member (12); a partition member (16, 90) which partitions a liquid chamber in the first attachment member (11) into a first liquid chamber (14) and a second liquid chamber (15), and in which at least one of the first liquid chamber (14) and the second liquid chamber (15) has the elastic body (13) as a portion of a wall surface thereof. The partition member (16, 90) is provided with a communicating passage (30), and the communicating path (30) is provided with a branching section (33) and a confluence section (32, 70, 84, 101).

Abstract: A floor portion (34) is formed to be inflected to a radial direction inner side from a lower end portion of a channel outer tube portion (32), and is disposed apart from and opposing a flange portion (24) at an outer periphery side of a tube portion (22) of a dividing member (20). The floor portion (34) is disposed within the tube portion (22) in an axial direction S, that is, so as to overlap with the tube portion (22) when viewed from a radial direction. A diaphragm (50) in the form of an elastic film is adhered by vulcanization to a restriction channel member (30) so as to cover an aperture in a lower side of the restriction channel member (30). A seal portion (56) is vulcanization-formed integrally with the diaphragm (50), so as to cover an inner periphery face of a channel inner tube portion (36) of the restriction channel member (30).

Abstract: A vibration isolator of the present invention includes a first attachment member (11), a second attachment member (12), an elastic body (13), a partition member (15), and a movable member (23).

Abstract: [Problem] To provide a liquid-sealed antivibration device capable of improving the position accuracy of an outer fitting member and a diaphragm. [Solution] Since a cylindrical outer fitting member 11 with an outer edge part of a diaphragm 10 connected thereto is externally fitted on a partition member 20 at an area on an inner peripheral surface of the outer fitting member 11 where the diaphragm 10 is not connected, that is, since the diaphragm 10 is not interposed between the partition member 20 and the outer fitting member 11, the position relation of the outer fitting member 11 to the partition member 20 can be stabilized, so that the outer fitting member 11 can be restrained from inclining relative to the partition member 20.

Abstract: A liquid-sealed antivibration device capable of improving the position accuracy of an outer fitting member and a diaphragm. An outer fitting member (11) is externally fitted on a partition member (20) with an interposition portion (10b) interposed, and the interposition portion (10b) is made to be fixed in thickness. Thus, when a diameter reduction process is given to a second attaching member (3), the outer fitting member (11) is restrained from being displaced in a direction to slip out of the partition member (20). Therefore, the outer fitting member (11) is restrained from falling eccentric or inclined relative to the partition member (20), and hence, it can be realized that the outer fitting member (11) and the diaphragm (10) are improved in position accuracy.

Abstract: The present disclosure relates to an hydraulic mount for coupling first second components in a vehicle. The mount has a first elastomeric member defining a first portion of a first chamber, and a second elastomeric member defining a second portion of the first chamber and a second chamber. The chambers are each able to retain fluid in a liquid seal manner. An inner tube assembly defines an opening for receiving a bolt. The elastomeric members may be fixedly secured to an outer surface of the inner tube assembly. An inner ring is fixedly coupled to the inner tube assembly at a position between the two chambers. The second elastomeric member is fixedly secured to an outer surface of the inner ring. A decoupler is fixedly disposed within the inner ring and adapted to move between rigid surfaces adjacent the first and second chambers.

Abstract: 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.

Abstract: Various embodiments of the disclosure include a power generation unit trailer system. A first aspect of the disclosure provides for a landing gear for a power generation unit trailer system. The landing includes: a support configured for attaching to a base of the power generation unit trailer; and a vibration isolator attached to the support and configured to anchor the support to a foundation beneath the base.

Abstract: Controllable hydraulic vibration-damping support comprising a rigid block, a bell-shaped elastomer body becoming wider from the block to an annular strength member, a working chamber, a compensation chamber, a constricted passageway connecting the working chamber to the compensation chamber, and an auxiliary chamber separated from the working chamber by a decoupling valve controlled by a control device. The auxiliary chamber, the decoupling valve and the control device are in the block.

Abstract: In liquid, an elastic main body member, a partition member, and a diaphragm are inserted into an outer cylinder one by one, and the diaphragm is held down by a fixing ring and fixed by a claw. Then, the liquid adheres onto outer circumferential surfaces of the partition member and the diaphragm. Therefore, a first special seal for adhered liquid is provided in an elastic partition member of the partition member and also a second special seal for adhered liquid and a third special seal for adhered liquid are provided in the diaphragm, so as to provide a seal between each of the outer circumferential surfaces of the partition member and the diaphragm and the fixing ring, so that the adhered liquid is prevented from leaking outwardly as leaked liquid.

Abstract: [Object] To provide a durable liquid-sealed mount that allows a relative displacement between a stud and a housing, i.e., large strokes, has good cushioning properties, has good damping properties by inhibiting cavitation from generating even if high frequency vibration is introduced, and can still absorb small amplitude and high frequency vibration. [Solving Means] A liquid-sealed mount 1 is attached between a first member and a second member for controlling vibration introduced to the first member or the second member and includes a cup-shaped housing 10, a stud 20, a cap member 30, a diaphragm 40, highly viscous liquid 50, air, a movable damping plate 70, and a support member 80. The support member 80 is positioned between a lower end of the stud 20 or the movable damping plate 70 and the diaphragm 40 and transmits a load in a compression direction applied to the stud 20 to the diaphragm 40.

Abstract: A hydromount (2) includes: a housing (4) and a compensating diaphragm (6), which enclose a hydraulic volume (8), a partition wall (12), which partitions the hydraulic volume (8) into a working chamber (14) and into a compensating chamber (16). The partition wall (12) contains a transfer channel (18), via which the two chambers (14, 16) are connected to one another, and wherein the partition wall (12) has an opening, in which there is a diaphragm or membrane (20) of flexible, elastomeric material clamped between two components (22, 24), wherein the diaphragm (20) is clamped between the two components (22, 24) in such a way that, as a result of the clamping, a radial pretension is produced in the diaphragm (20).

Abstract: An example mount assembly includes an upper mount and a lower mount. The assembly also includes an inertia track having a central opening defining an axis. The inertia track defines a passage in fluid communication with the first chamber and the second chamber. The inertia track is moveable along the axis.

Abstract: A vibration damping device including: a first mounting member including a fitting tube part opening to a side for fitting and mounting of an inner bracket; a second mounting member; a main rubber elastic body elastically connecting the first and second mounting members; and a stopper rubber provided on a portion of a circumference of the fitting tube part while projecting to the side from an opening end surface of the fitting tube part, the stopper rubber being configured to overlap the inner bracket. The stopper rubber is configured to be elastically deformed by fitting and mounting of the inner bracket into the fitting tube part so as to abut and overlap the inner bracket in a state urged by an elasticity of the stopper rubber itself.

Abstract: An electronic indirect by-pass type semi-active mount may include a primary diaphragm dividing a lower fluid chamber, where a fluid in an upper fluid chamber to which an exciting force as external force is applied is circulated, into a primary lower fluid chamber where the fluid is circulated, a secondary diaphragm dividing the lower fluid chamber into a secondary lower fluid chamber where the fluid is circulated, a secondary diaphragm bracket blocking an atmospheric pressure formation peripheral space in which atmospheric pressure acts beneath the primary diaphragm and forming an atmospheric pressure formation central space in which atmospheric pressure acts beneath secondary diaphragm, and by-pass channels.

Abstract: An active mount in which a nozzle plate is mounted between an insulator and a diaphragm to divide an inner space into an upper liquid chamber and a lower liquid chamber, and an encapsulated hydraulic liquid flows from the nozzle plate through a first flow path depending on a change in fastened state of the liquid chambers may include the nozzle plate having a second flow path and allowing the upper liquid chamber and the lower liquid chamber to be in communication with each other, the diaphragm made of a material having elasticity and coupled to a lower portion of the nozzle plate to form the lower liquid chamber, the diaphragm having an inflection portion, and a yoke including a body portion having an upper end in close contact with a lower portion of the inflection portion, and a rod portion coupled to a lower portion of the body portion.

Abstract: A liquid sealed vibration isolating device is integrally provided with an elastic movable diaphragm and a relief valve. A pair of parallel straight line sections is on opposite sides of a circular elastic partition member. The elastic movable diaphragm includes a center of the elastic partition member and is surrounded by a pair of opposed circular arc sections and a pair of straight line sections formed by cutting an outer circumferential part of the elastic partition member. The relief valve is radially outward of the straight line section of the elastic partition member. A part of the elastic movable diaphragm reaches the circular arc section corresponding to the outer circumferential part of the elastic partition member so as to be increased in area as much as possible to absorb an internal pressure of a primary liquid chamber and to achieve low dynamic spring.

Abstract: A liquid supply device and an image recording apparatus that do not cause the tearing of a diaphragm even if abnormal pressure is generated. The objective is solved by a liquid supply device that includes a back-pressure tank and a restriction member. The back-pressure tank is provided between an ink jet head and a pump, and includes a liquid chamber that communicates with an ink passage through a flow port, a gas chamber in which gas is stored, and an elastic diaphragm that isolates the liquid chamber from the gas chamber. The restriction member is disposed on an extension surface of the flow port of an inner wall surface of the liquid chamber, and keeps the elastic diaphragm on the inside of the extension surface in a case in which the elastic diaphragm is sucked into the flow port by pressure that is applied to ink by the pump.

Abstract: An active engine mount has a liquid chamber for keeping liquid in a housing. The active engine mount includes a separation plate that is disposed in the liquid chamber, has a space at its center, and divides the liquid chamber into an upper liquid chamber and a lower liquid chamber. At least one primary flow path connects the upper liquid chamber and the lower liquid chamber. An orifice plate is disposed under the space at the center of the separation plate and has at least one bypass flow path connected with the lower liquid chamber. An air chamber is disposed between the orifice plate and the space at the center of the separation plate, and is configured to open or close the at least one bypass flow path by changing its size.

Abstract: A method for operating an actuator of a torsion bar system of a wheel suspension of a motor vehicle is disclosed. The actuator is mounted on a carrier structure of the vehicle and actuation of the actuator changes a pre-tension acting on a wheel guide element of the wheel suspension. The method includes controlling an active aggregate support so as to reduce a vibration of a drive aggregate supported on the carrier structure via the active aggregate support adjacent to the actuator; and controlling the active aggregate support for reducing an operational vibration of the actuator.

Abstract: An elastic main body member, a partition member, a diaphragm and a fixing ring are piled up in an outer cylinder of long cylindrical shape that surrounds the whole outside of the elastic main body member, and combined together by fixing the fixing ring by claws of the outer cylinder. An elastic main body member drain recess, a partition member first drain recess and a fixing ring drain recess are formed in each of outer circumferential portions of the elastic main body member, the partition member and the fixing ring and, when assembling, aligned continuously with each other, so that a water drain passage is formed inside the outer cylinder.

Abstract: A vehicle engine mount structure includes a motor mount assembly, a motor bracket and a heat shield. The motor mount assembly has a first attachment part with a fastener receiving aperture, a vibration absorbing section and a second attachment part spaced apart from the first attachment part. The motor bracket has a first flange portion configured to support a vehicle engine and a second flange portion configured to attach to the second attachment part of the motor mount assembly. The heat shield is dimensioned to at least partially overlay the vibration absorbing section of the motor mount assembly and overlay the fastener receiving aperture with the heat shield being disposed between the motor mount assembly and the second flange portion of the motor bracket, and with the second flange portion of the motor bracket attached to the second attachment part of the motor mount assembly.

Abstract: A floor portion (34) is formed to be inflected to a radial direction inner side from a lower end portion of a channel outer tube portion (32), and is disposed apart from and opposing a flange portion (24) at an outer periphery side of a tube portion (22) of a dividing member (20). The floor portion (34) is disposed within the tube portion (22) in an axial direction S, that is, so as to overlap with the tube portion (22) when viewed from a radial direction. A diaphragm (50) in the form of an elastic film is adhered by vulcanization to a restriction channel member (30) so as to cover an aperture in a lower side of the restriction channel member (30). A seal portion (56) is vulcanization-formed integrally with the diaphragm (50), so as to cover an inner periphery face of a channel inner tube portion (36) of the restriction channel member (30).

Abstract: A satellite support structure to support at least one device of the satellite. The support structure includes structural elements with at least one of the structural elements being a damping connector linking at least two other structural elements of the support structure. The damping connector includes an elastomer element and at least one flat angle bracket having at least two wings to be linked by the respective connectors to the damped structural elements. The elastomer element is made from elastomer material with loss angle ? greater than ten degrees and is arranged such that the transmission of forces between one of the wings of the flat angle bracket and the connectors is achieved entirely via the elastomer element.

Abstract: An engine mount assembly includes a housing, an inertia track received in the housing and an elongated fluid damped first path that is adapted to communicate with an associated first fluid chamber on a first side and an associated second fluid chamber on a second side. A non-damped second path is adapted to communicate with the associated first and second fluid chambers. A decoupler is received in the housing, an idle diaphragm in the housing that selectively controls communication between the first and second fluid chambers to selectively alter the damping. First and second ports in the housing communicate with the decoupler and the idle diaphragm, respectively. A first solenoid selectively controls fluid flow through the first port and a second solenoid selectively controls fluid flow through the second port.

Abstract: An electronic semi active control engine mount having a variable air chamber includes a variable air chamber diaphragm that absorbs the exciting force of fluid due to an external force by elastically deforming. An air chamber supports the variable air chamber diaphragm with the atmospheric pressure. A fork is separated from the diaphragm to keep the air chamber into which air flows in idling of an engine, and comes in close contact with the variable air chamber diaphragm to remove the air chamber into which the air flows when a vehicle is driven. An actuator either separates the fork from the variable air chamber diaphragm or allows the fork to be in close contact with the variable air chamber diaphragm.

Abstract: A device for the elastic mounting of an engine, in particular an engine transmission unit, on a motor vehicle body, comprising a rigid support with a supporting section and a mounting section, to which the engine can be fastened, a rigid flange ring which can be fastened to the motor vehicle body and surrounds the full circumference of the supporting section, and a spring body which is elastically supported on the supporting section of the support and on an inner side of the flange ring.

Abstract: A mounting member for use in a vibration damping device equipped with a main rubber elastic body and a bracket, including: a fixing member configured to be fixed to the bracket; an anchoring member made of resin and configured to be anchored to the main rubber elastic body. The anchoring member is anchored to the fixing member and protrudes from the fixing member.

Abstract: A vibration damping device includes: a cylindrical first attachment member and a second attachment member; and an annular first elastic body and an annular second elastic body, wherein, a liquid chamber is formed between the elastic bodies, elastic division walls that divide the liquid chamber into a plurality of pressure receiving liquid chambers are arranged, wherein the elastic division wall is joined to the first elastic body, and is also in abutment with the second elastic body, wherein the second attachment member is divided in the axial direction into: a first divided body to which an inner peripheral edge portion of the first elastic body is joined; and a second divided body to which an inner peripheral edge portion of the second elastic body is joined, and wherein the inner peripheral edge portions of the elastic bodies are located side by side in the axial O direction.

Abstract: An anti-vibration device bracket is provided that is capable of suppressing deformation due to contact with a member coupled to an engine side, and also capable of suppressing liquid ingress from the engine side. A anti-vibration device bracket 70 supports an anti-vibration device main body 12 on a vehicle body, the anti-vibration device main body 12 including an inside attachment member 14 coupled to an engine bracket 90, an outside attachment member 16 coupled to the vehicle body, and a resilient body 18 that couples together the inside attachment member 14 and the outside attachment member 16.

Abstract: An elastic partition member located in the partition member is integrally provided with a relief valve that opens and closes a leak passage to suppress the generation of the cavitation phenomenon. A pair of relief valves is formed in a crescent shape on the outer circumferential side of the movable diaphragm section in opposed relation. The crescent shape of the relief valve is formed by an inner circumferential side of elliptical arc shape and an outer circumferential side of circular arc shape. A valve length of the relief valve varies in the longitudinal direction such that a middle portion in the longitudinal direction is largest. is easily deformed when the extraordinary vibration is inputted. Each end portion in the longitudinal direction of the relief valve is short in valve length and high in rigidity whereby to prevent the leak when the normal vibration is inputted.

Abstract: Annular liquid chamber resonance in an inverted type liquid sealed mount is controlled without using flow resistance. In an engine mount including a secondary liquid chamber located in an upper position, a primary liquid chamber located in a lower position, a main body section of an insulator projecting upwardly in substantially a chevron shape, and an annular liquid chamber formed around the main body section, a control projection is provided on an outside wall of the main body section to project upwardly and configured to produce elastic body resonance in the vicinity of a resonance frequency of annular liquid chamber resonance. With this construction, the annular liquid chamber resonance is controllable by the elastic body resonance of the control projection, and the control projection is increased in size so as to endure flow resistance whereby to improve durability.

Abstract: A liquid-sealed anti-vibration device comprising: an inner tube (1), an outer tube (2); rubber bodies (3), (4) interconnecting the inner and outer tubes (1), (2) in a liquid-tight manner at two positions spaced in an axial direction; a partition wall disposed between the rubber bodies (3), (4) to divide a space between the inner and outer tubes into two parts in the axial direction, the partition wall having an annular rigid member (5a) and an elastic member (5b); liquid chambers (8), (9) configured in such a way that the spaces partitioned by the partition wall (5) are filled with non-compressible liquid; and a limiting passage (7) provided in the partition wall (5) to allow the liquid chambers (8), (9) to communicate with each other, wherein the annular rigid member (5a), protrudes from the inner tube (1) toward the outer tube, the elastic member (5b) connects the annular rigid member (5a) to the outer tube (2), and the limiting passage (7) is formed by at least one passage groove (5c), the passage groove b

Abstract: In the inverted type liquid sealed engine mount in which a secondary liquid chamber is located above, an insulator protrudes in a mountain shape into a primary liquid chamber, and a resistor is provided within an annular recess section formed around the protruding portion. The resistor is mounted by insertion into an engaging recess of a lining layer and elastically supported by ribs so as to be movable in the annular recess section due to liquid flowing in the circumferential direction. A regulation gap is provided between the resistor and the insulator. Although a peculiar resonance occurs when the liquid passes through the regulation gap, the peak of the anti-resonance is decreased and the frequency is moved, since the resistor is movable.

Abstract: A fluid-filled vibration damping device including: a primary liquid chamber which gives rise to pressure fluctuations based on deformation of a main rubber elastic body at times of vibration input; an auxiliary liquid chamber which gives rise to pressure fluctuations relative to the primary liquid chamber at times of vibration input; and an orifice passage that allows flow action of a scaled fluid between the primary liquid chamber and the auxiliary liquid chamber. The sealed fluid contains at least 0.03 volume % of a dissolved gas under atmospheric pressure at room temperature. A low-adhesion energy surface with a water contact angle of at least 90 degrees is provided on an inner surface of the primary liquid chamber.

Abstract: A mount having a bolt through configuration couples two components of a vehicle. The mount includes a first elastomeric member that defines a first portion of a first chamber and a second elastomeric member that defines a second portion of the first chamber and defines a second chamber. An inner tube assembly defines an opening for receiving the bolt. The first and the second elastomeric members are bonded to the inner tube assembly. An annular member is disposed between the first and the second chambers. The annular member defines a fluid-track which fluidly couples the first and the second chambers. The mount dampens vibrations at varying amplitudes by pushing fluid between the first and the second chambers via the fluid-track. The mount may also include a decoupler by way of a decoupler ring and decoupler cap to isolate the mount at a predetermined amplitude at varying frequencies.

Abstract: A vibrationproof device which is a liquid sealed vibrationproof device includes a tubular first mounting member (3) that is connected to either one of a vibration generating portion and a vibration receiving portion, a second mounting member (4) that is connected to other one, an elastic body (5) that elastically connects the first mounting member (3) and the second mounting member (4), and a partition member (8) that partitions a liquid chamber (7) of the inside of the first mounting member (3) into a main liquid chamber (7A) of an upper side having the elastic body as a portion of a wall surface and an auxiliary liquid chamber (7B) of a lower side, and a restricting passage (80) which communicates with the main liquid chamber (7A) and the auxiliary liquid chamber (7B).

Abstract: In a liquid-filled vibration isolating device according to a first aspect of the present invention, at least one of a membrane support (11) and a membrane retainer (12) has a through hole (14) partitioned into a plurality of windows by one or more beams (15) each having a curved or deflected shape in a plane perpendicular to the thickness direction of a partition member (9).

Abstract: A switchable mount includes a partition wall which partitions a working chamber from a compensating chamber. A first diaphragm is arranged in the partition wall so as to be deflectable in the longitudinal direction of the mount. A switching actuator controls the diaphragm and, in a first state thereof, the diaphragm is fixed in a rest position and, in a second state thereof, the diaphragm is released to move in the longitudinal direction of the mount. A second diaphragm is arranged in the partition wall and is deflected in the longitudinal direction of the mount to influence the volume of the working chamber. An air chamber is arranged between the first diaphragm and the second diaphragm. In the first state of the actuator, the air chamber is closed off air-tight to the atmosphere and, in the second current-conducting state of the actuator, is connected to the atmosphere.

Abstract: A vibration damping device including a first mounting member arranged on a lower side of a second mounting member, the first and second mounting members being elastically connected by a main rubber elastic body, and an outer bracket arranged on the lower side of the second mounting member. A coupling part is constituted by engagement between a bottom edge of the second mounting member and a top edge of the outer bracket, and the second mounting member is configured to be attached to a vibration source via the outer bracket. The outer bracket is arranged in opposition to the first mounting member in an axis-perpendicular direction, and an axis-perpendicular stopper member that regulates relative displacement between the first and second mounting members in the axis-perpendicular direction is constituted by contact between the first mounting member and the outer bracket.

Abstract: A relief valve is provided in a central part of an elastic diaphragm. A relief hole is provided in the central part of the relief valve. The relief valve is formed thinner than a main body section on an outer circumferential side thereof. Pressing projections protrude from the relief valve upper surface at predetermined intervals in the circumferential direction. The pressing projections contact a projection support section, and a central opening of a central section is located above the relief hole. During excessive deformation on a negative pressure side, the hydraulic liquid of a secondary liquid chamber allows an inner peripheral portion of the relief valve to cause such a preceding deformation as to be lifted up, and the relief valve is rapidly brought out of contact with the seal section, so that the hydraulic liquid leaks rapidly from the central opening to a primary liquid chamber.

Abstract: A reduced noise decoupler has a perimeter with a wavy form. This provides a significant reduction in the initial contact noise. Hydraulic pressure deforms the wavy edges, pressing the wavy edge flat and creating the necessary seal. The edge geometry is created such that pressure will flatten the decoupler perimeter without creasing, ensuring a proper seal without losses. This is achieved by drawing the wavy detail from the perimeter to an interior of the decoupler body in alternating fashion to create a pattern of peaks and troughs bounded by thicker sections, allowing the edges to easily deform without creasing.

Abstract: A fluid-filled vibration damping device including an elastic buffer body supported by a partition member and arranged in a housing space such that at least one of wall inner surfaces of the housing space on sides of a pressure-receiving chamber and an equilibrium chamber is covered by the elastic buffer body. Windows are formed to penetrate the elastic buffer body at portions corresponding to communication holes formed in walls of the housing space so that the communication holes are narrowed by the windows of the elastic buffer body, and a ratio (a/l) of an opening area (a) of the windows to a penetration length (l) thereof is made smaller than a ratio (A/L) of an opening area (A) of the communication holes to a penetration length (L) thereof.