JPH0681971B2 - Fluid-filled mounting device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a fluid-filled mount device, and is particularly preferably used as a support means for an automobile engine, a driving force transmission system engine, or the like. The present invention relates to a fluid-filled mount device (anti-vibration support device) capable of arbitrarily changing spring characteristics and vibration damping characteristics according to input vibration.

(Background Art) Conventionally, it is mounted between two members to which vibration is transmitted,
An anti-vibration supporting device or a mounting device is used which supports the other member while blocking or damping the vibration of one member. For example, in an automobile, when attaching a power unit in which an engine and a transmission are integrally combined to a vehicle body, an engine mount as a vibration isolation support device is mounted between the power unit and the vehicle body, and at the same time as supporting the power unit, the engine mount is mounted. The input vibrations from the vehicle and the transmission of the input vibrations from the road surface during traveling are suppressed or blocked, and the vibrations are attenuated.

Incidentally, in such a mounting device for an engine mount such as automotive, general, from a low frequency of approximately 10H _z
For any input vibration of 100～200H _z about or broad frequency range to a high frequency exceeding it, it is intended to exhibit good vibration damping effect, it has been demanded.

For example, regarding the engine mounts described above, various factors such as noise and vibration that affect the riding comfort of an automobile are recognized, but vibration and swing of an engine as a prime mover are significant. In order to cope with various problems caused by the engine and the engine, a plurality of engine mounts mainly made of a rubber-like elastic body are adopted for one engine. However, the engine mount cannot be said to have a sufficient function by simply elastically supporting the engine mount, and it is required that the engine mount has characteristics corresponding to various running states.
Particularly, the required characteristics at the time of stopping the traveling and at the time of traveling at medium and high speeds are important. That is, the low dynamic spring and low damping characteristics are against the idling vibration when stopped, while the high dynamic spring and high damping characteristics are the reverse against the engine shake vibration during medium and high speed running. : between the 10~30H _z, it is the both overlapping is required. Here, as a form of the engine mount, a structure capable of selectively realizing two states of high dynamic spring / high damping and low dynamic spring / low damping in the same frequency band is required.

As means for satisfying such required characteristics, in recent years, for example, according to JP-A-62-118134, in a structure having two chambers in which liquid is sealed inside an engine mount, a flow path connecting these two chambers is provided. A mounting device having a structure in which a solenoid valve is opened and closed to selectively control the mounting characteristics has been proposed. However, in such a structure, the number of parts is inevitably increased, and high working accuracy is required.

Therefore, when considering the usage condition of the engine mount, it is always exposed to the vibration condition. Therefore, it is difficult to secure durability and reliability with such a mounting device having a plurality of precise structures. At the same time, the unit price had to be expensive.

On the other hand, in recent years, as a mount device capable of damping or blocking input vibrations in various different states, in recent years, in JP-A-60-104828 and JP-A-62-88835, an electrorheological fluid is used as a sealed fluid. The mounting device used has been proposed. This device encloses an electrorheological fluid in each of two fluid chambers formed inside the device, and provides a pair of electrodes in the communication passages of the fluid chambers. The structure is such that the viscosity of the electrorheological fluid flowing between the fluid chambers is changed. The electrorheological fluid used therein is well known, for example, in US Pat. No. 3,047,507.

In this mounting device, when low dynamic spring characteristics are required, such as when idling, when a low-viscosity electrorheological fluid flows through the communication passage connecting the two fluid chambers without applying a voltage. By reducing the vibration transmission force by the orifice effect of, and in the running state, a voltage is applied between the electrodes to change the viscosity of the electrorheological fluid between the pair of electrodes to increase the dynamic spring constant. It is expected that the vibration transmission can be suppressed or cut off in a quick response to the vibration load generated according to the running state of the automobile.

However, in such an electrorheological fluid-filled mount device, for example, when a vibration in a predetermined frequency range is input to the communication passage, the liquid column resonance action due to the flow of the fluid through the communication passage causes a low dynamic spring / low movement. When tuning is performed so that the damping effect can be exhibited, even if the viscosity of the circulating fluid in the communication passage changes due to voltage application control,
High dynamic spring based on liquid column resonance in the same frequency range
The high damping effect cannot be expected, and the only change in mount characteristics is the increase in the dynamic spring constant due to the increase in flow resistance due to the increase in the viscosity of the circulating fluid, and the increase in the damping coefficient cannot be expected. The ideal control mode is a combination of a low dynamic spring and low damping characteristics against idling vibrations when stopped at approximately the same frequency band, and a high dynamic spring and high damping characteristics against engine shake vibrations during medium to high speed running. Given that there was still a significant problem inherent.

(Problems to be Solved) Here, the present invention has been made in view of such circumstances in order to solve the problems in those conventional devices, and its object is to make the vehicle idle or shake. Not only vibration in the low frequency range such as time but also vibration in the high frequency range such as muffled noise can be effectively suppressed, and the structure is simple, reliable, mass producible and low cost. To provide a mounting device.

(Solution) The present invention, in order to achieve such an object,
(A) a first support and a second support that are located at a predetermined distance in the vibration input direction, and (b) a rubber elastic body that elastically connects the first and second supports. ,
(C) A partition that extends in a direction perpendicular to the vibration input direction, has an outer peripheral edge portion fixed to the second support body in a fluid-tight manner, and has an annular path extending along the outer peripheral edge portion. A member, (d) a pressure-receiving chamber located on one side of the partition member, at least a part of which is defined by the rubber elastic body, into which vibration to be isolated is input; An equilibrium chamber located on the opposite side of the partition member from the pressure receiving chamber, at least a part of which is defined by a flexible membrane; and (f) predetermined pressure chambers enclosed in the pressure receiving chamber and the equilibrium chamber, respectively. The electrorheological fluid and (g) the annular passage formed in the outer peripheral edge of the partition member are communicated with the pressure receiving chamber by the first communicating portion, and at a position different from the first communicating portion in the circumferential direction. The annular passage is communicated with the equilibrium chamber by the second communicating portion arranged. As a result, a first orifice passage and a second orifice passage having different lengths in the clockwise direction and the counterclockwise direction are formed between the first communication portion and the second communication portion, respectively. An orifice mechanism in which the second orifice passage is configured to be shorter than the first orifice passage; and (h) is provided on the partition member inside the annular passage and is provided with a predetermined amount of displacement or deformation. A movable member for changing the volume of the pressure receiving chamber by a predetermined amount,
(I) at least one of the first and second orifice passages, a pair of electrodes arranged on the opposing wall portions of the second orifice passage, and (j) an electric field is formed by energizing between the pair of electrodes. By doing so, the fluid-filled mount device is configured so as to include the current-carrying means for restricting the flow of the electrorheological fluid in the orifice passage in which the pair of electrodes are arranged.

(Examples) In order to more specifically clarify the present invention,
Embodiments of the present invention will be described in detail with reference to the drawings.

First, FIG. 1 shows an example of an engine mount which is a fluid-filled mount device according to an embodiment of the present invention. In this figure, 10 and 12 are an upper support metal fitting and a lower support metal fitting, respectively, as a support body, which are arranged in a state of facing each other with a predetermined distance in the main vibration input direction (vertical direction in FIG. 1). ing.

The upper support fitting 10 is formed in a thick-walled inverted truncated cone shape, and is provided with a mounting bolt 14 that projects outward at the center of its upper surface. On the other hand, the lower support bracket
Reference numeral 12 denotes a bottomed cylindrical bottom metal fitting 18 having an outwardly facing flange portion 16 in the opening, and an annular coupling metal fitting integrally fixed to the flange portion 16 of the bottom metal fitting 18 by bolts 20 or the like. twenty two
And two thick annular spacer fittings 24, 2 which are interposed between the connecting fitting 22 and the flange portion 16 so as to be superposed on each other.
The bottom metal fitting 18 is integrally provided with a mounting bolt 26 projecting outward. As shown in the drawing, the lower support metal fitting 12 is arranged concentrically with the upper support metal fitting 10 in a state where its internal space is open to the upper support metal fitting 10 side.

The upper and lower support fittings 10 and 12 are provided with respect to the rubber elastic body 28 having a substantially hollow truncated cone shape, the upper support fitting 10 is provided at the top end, and the second support is provided at the bottom outer circumference. Metal fittings
12. More specifically, the connecting fittings 22 are integrally vulcanized and bonded together, so that they are integrally and elastically connected by the rubber elastic body 28.

As shown in the drawing, a protective rubber film 30 made of NBR or the like is integrally provided with a predetermined thickness on the inner surface of the rubber elastic body 28 in the present embodiment, and the peripheral edge portion thereof is the connecting fitting 22. The rubber elastic body 28 is protected from the electrorheological fluid contained therein by being sandwiched between and the spacer fitting 24.

In addition, the lower support bracket 12 has a flange portion 16 of the bottom bracket 18.
Between the spacer 32 and the spacer metal fitting 24, a diaphragm 32 made of a rubber elastic film is arranged in a state where the peripheral edge portion is fluid-tightly sandwiched, and thereby, between the diaphragm 32 and the rubber elastic body 28. A closed space is formed. A predetermined electrorheological fluid 34, for example, a known electrorheological fluid such as a mixture of finely divided silica gel, a nonionic surfactant and water in an organic solvent, is enclosed in the closed space.

Further, the lower support fitting 12 is provided with a partition member 36 as a partition wall in a state where the peripheral edge portion is fluid-tightly held between the two spacer fittings 24, 24 constituting the lower support fitting 12. By means of this partition member 36, the above-mentioned closed space is provided so that the pressure receiving chamber 38 on the upper support metal fitting 10 side and the equilibrium chamber on the diaphragm 32 side
It is divided into 40.

The partition member 36 is shown in FIGS. 2 (a) and 2 (b).
As also shown in Fig. 1, the upper flow path forming member 42 and the lower flow path forming member 44, which are annular and are made of an electrically insulating material such as a fluororesin, are configured to overlap with each other, The inner edge ring and the outer edge ring of the path forming members 42 and 44 are inner edge sealing rings made of an electrically insulating material such as fluororesin.
By being sealed with 46 and the outer edge sealing ring 48,
An annular path 50 is formed between the flow path forming members 42 and 44. The partition member 36 is attached to the outer peripheral edge portion thereof by being sandwiched between the two spacer fittings 24, 24 as shown in FIG.

Further, the upper flow passage forming member 42 of the partition member 36 is provided with a communication hole 52 for communicating the annular passage 50 with the pressure receiving chamber 38, while the lower flow passage forming member 44 also has such communication. Communication holes 54 communicating with the equilibrium chamber 40 are provided at different positions with a predetermined phase difference from the holes 52, in other words, at different positions in the circumferential direction of the annular path 50, whereby the pressure receiving chamber 38 is provided.
There are two kinds of orifice passages that connect the equilibrium chamber 40 and the equilibrium chamber 40. That is, the annular path 50 formed on the outer peripheral edge of the partition member 36 has the communication holes 5 arranged at different positions in the circumferential direction.
From the places where they are communicated with the pressure receiving chamber 38 and the equilibrium chamber 40 by 2, 54, respectively, between the two communication holes 52, 54, in the clockwise direction and the counterclockwise direction, the first orifice passage 56 and A second orifice passage 58 is formed, and these orifice passages 56, 58 share the communication holes 52, 54 and allow the pressure receiving chamber 38 and the equilibrium chamber 40 to communicate with each other. The first and second orifice passages 56, 58
The lengths of the first and second orifice passages 56 and 58 are respectively tuned in accordance with the intended vibration input, as will be described later.
Is set short.

Then, in the short second orifice passage 58, a pair of plate-shaped electrodes 60, 62 are provided on the upper and lower wall surfaces facing each other.
Are provided over substantially the entire length of the orifice passage 58, respectively, and as shown in FIG.
By virtue of the electric field formed between the pair of electrodes 60 and 62, the viscosity of the electrorheological fluid 34 present in the second orifice passage 58 is increased, and the electrorheological fluid through the orifice passage 58 is increased. The flow of the fluid 34 can be suppressed or blocked.

Further, in the partition member 36, a large through hole 66 is formed inside the annular path 50, and the movable plate 68 receives the vibration input so as to close the through hole 66. In the state in which the outer peripheral edge portion is movable in a predetermined distance in the direction, the fluid pressure of the pressure receiving chamber 38 and the equilibrium chamber 40 is exerted by holding the outer peripheral edge portion in the voids of the inner edge portions of the upper and lower flow path forming members 42, 44. It is provided so that it can be done.

The engine mount of this embodiment having such a structure is attached to the engine side by the mounting bolts 14 of the upper support bracket 10, for example, while the lower support bracket is attached.
The 12 mounting bolts 26 are mounted on the vehicle body frame side, whereby the engine or the power unit including the engine is vibration-isolated and supported on the vehicle body.

Therefore, the operation and characteristics of the engine mount having the above-described structure are as follows.

First, such an engine mount has two fluid chambers 38, 40.
The structure is such that two long and short orifice passages 56, 58 having a common opening end (52, 54) are built in, and the shorter orifice passage 58 has a flat cross section, Two walls facing each other are constituted by the electrodes 60 and 62. It should be noted that the two surfaces are usually selected on the side closer to each other.

Therefore, the shorter orifice passage 58 is configured so that an electric field can be formed over the entire passage.

Then, when no electrical operation (energization) is performed, the electrorheological fluid 34 mainly passes through a flow path with a small flow resistance, that is, a short orifice passage 58, and the frequency characteristic of the engine mount is substantially the same. Short orifice passage
While it will be governed by the flow characteristics at 58, if a predetermined potential difference is given between the electrodes 60, 62 of the short orifice passage 58 by feeding from the external power source 64, it will be affected by the electric field between those electrodes 60, 62. The fluid in the short orifice passage 58 significantly increases the viscosity. And, the degree thereof is 100 times or more of the base viscosity, and therefore, most of the fluid inside passes through the flow passage on the side where the flow resistance is small, that is, the orifice passage 56 on the long side, The frequency characteristic of the engine mount is also governed by the flow characteristic in the long orifice passage 56.

Such a characteristic change can be explained as follows. That is, in the absence of an electric field, in other words electrodes 60,6
As compared with the case where the electric field is not formed in the second orifice passage 58 without being energized between the two and the flow characteristics of the substantially short flow path (58) are controlled, the electrodes 60, 62 are When an electric field is applied with electricity applied between them, as described above, the flow characteristics of the long flow path (56) are governed, and the resonance point in the frequency characteristics of the mount shifts to the low frequency side. . This characteristic is shown in Fig. 3 (a).
And (b), the characteristics shown by the solid line and the characteristics shown by the broken line can be made to appear separately depending on whether or not an electric field is applied.

Accordingly, in such FIG. 3, the frequency domain indicated by the arrows: A, i.e. the frequency-domain of the idling vibration or shake vibration (10~30H _z), the engine mount specification settings, such third figure By setting so that the characteristics shown by the solid line and the broken line can be obtained, two important required characteristics, namely low dynamic spring / low damping for idling vibration and high dynamic spring / high damping for shake vibration, can be set according to the running condition. It is possible to selectively obtain an electric field by performing an operation of forming an electric field or removing such an electric field (no application), and an ideal form of engine mount can be realized here. is there. In addition,
The formation of such an electric field will advantageously be controlled by detecting the running state of the motor vehicle by means of suitable sensors.

Further, in the engine mount having the structure as in the present embodiment, the two types of orifice passages 56, 58 having different lengths are simply connected so as to make the annular passage 50 communicate with the pressure receiving chamber 38 and the equilibrium chamber 40, respectively. Since it can be formed only by providing the holes 52 and 54, the structure of the orifice mechanism becomes extremely simple, which not only improves reliability but also exhibits excellent characteristics in mass productivity. However, the price of the engine mount can be advantageously reduced.

In addition, in the engine mount as in this embodiment,
Orifice passage when high frequency vibration is input
A movable plate 68 is provided so as to be located inside the annular passage 50 even if both 56 and 58 are effectively closed and the flow of fluid through the orifice passages 56 and 58 cannot be induced. Therefore, the increase in the hydraulic pressure in the pressure receiving chamber 38 caused by the input of such high-frequency vibration can be effectively absorbed by the movement or deformation of the movable plate 68. The hardening of the spring characteristics of the entire device can be effectively avoided, and high-frequency muffled noise can be advantageously suppressed.

As in the present embodiment, the annular path 50 is provided at the outer peripheral edge of the partition member 36, and the through hole 66 for mounting the movable plate 68 is provided so as to be located inside the annular path 50. By adopting such a structure, the arrangement area of the movable plate 68 can be increased as much as possible, thereby maximizing the vibration damping effect by the displacement of the movable plate 68. Is possible.

Although one embodiment having a structure according to the present invention has been described in detail above, it is a literal example, and the present invention should not be construed as being limited to such a specific example.

For example, regarding the arrangement of the pair of electrodes 60, 62, in the previous example, the electrodes are provided so as to face each other in the vertical direction, but as shown in FIGS. 4 (a) and 4 (b), the second orifice passage It is also possible to provide them so as to face each other in the width direction of the 58, in other words, in the horizontal direction, and such electrodes 60 and 62 have such lengths as long as an effective electric field is formed in the orifice passage 58. In addition to iron, a plate state or a mesh state formed of a metal such as copper or aluminum can be used.

Further, the pair of electrodes (60, 62) can be provided not only in the second orifice passage 58 as illustrated but also in the first orifice passage 56 at the same time.
And in relation to the lengths of the first and second orifice passages 56, 58 in the circumferential direction of the annular passage 50, which are determined by the target tuning frequency, the disposition form of those electrodes determines the desired dynamic characteristics. It will be selected so that it can be revealed.

That is, in the case where a pair of electrodes (60, 62) are arranged in the two orifice passages (56, 58) to selectively form an electric field, FIG. As shown in, the dynamic characteristics can be changed variously. In these figures, (a) indicated by the solid line shows the case where no electric field is applied to the volume orifice passages (56, 58), in which the orifice passage with the shorter flow passage has a higher resistance. The fluid is
The characteristics of the orifice are expressed mainly by passing through the orifice passage (58), and in the orifice passage (58) having such a short flow path, a voltage is applied between the electrodes (60, 62) provided there. Is applied to form an electric field, the electro-rheological fluid in such a short orifice passage (58) is thickened by its characteristic and becomes hard to flow, whereby it is indicated by the one-dot chain line (b). So that
The characteristic of the other orifice passage (56) of the longer flow passage is developed, and further, the two orifice passages (56, 5
When a voltage is applied between the pair of electrodes (60, 62) respectively provided in 8) to thicken both and make it difficult for the fluid to pass through, a high rigidity is obtained as shown by the broken line (c). Is obtained.

Therefore, as described above, the two types of orifice passages (56,5
By tuning one of 8) to idle vibration and the other to shake vibration, and adjusting the characteristic (c) that makes it difficult for the fluid to pass through these two orifice passages (56, 58) to a bad road. It is possible to deal with various vibrations.

Further, in the mounting device according to the present invention, since the rubber surrounding wall of the protective rubber film 30 and the diaphragm 32 that define the pressure receiving chamber 38 and the equilibrium chamber 40 comes into contact with a predetermined electrorheological fluid, , Hydrogenated NBR, ACM, CHC, FKM and other oil-resistant rubber are preferable, and a highly flexible resin thin film such as nylon bonded to the rubber surface can also be used. It is also possible to form the rubber elastic body 28 itself with these materials directly without providing the protective rubber film 30. Further, the upper and lower flow path forming members 42 and 44 constituting the partition member 36, and even the inner and outer edge sealing rings 46, 48 are not limited to those made of a fluororesin as illustrated, Volume resistivity of 10 ¹⁵ Ωcm
Any of the above organic solvent resistant materials can be used.

Further, even if the movable plate (68) is made of a rigid material such as metal, it may be made of a plastic material or a rubber material, but in any case, it has oil resistance. It is made of materials. And
Here, the movable plate (68) is configured such that the entire movable plate (68) can move to the equilibrium chamber 40 side by a predetermined distance due to the pressure fluctuation in the pressure receiving chamber 38 based on the vibration input.
Further, it is also possible to adopt a structure in which the outer peripheral edge portion of such a movable plate is fixed to the partition member 36, while the central portion is deformed to absorb the pressure fluctuation in the pressure receiving chamber 38. In this case, the movable plate 68 is advantageously made of an elastic material such as rubber.

In addition, in the above embodiment, an example of applying the present invention to an engine mount of an automobile is shown, but the present invention can be favorably used as a mounting device in various other mechanical devices, It goes without saying that design changes can be made appropriately according to the usage form and the like.

In addition, although not enumerated one by one, the present invention can be carried out in a mode in which various changes, modifications, improvements, etc. are added based on the knowledge of those skilled in the art, and such an embodiment is not limited to the embodiments of the present invention. Needless to say, all of them are included in the scope of the invention without departing from the spirit of the invention.

(Effects of the Invention) Therefore, in the fluid-filled mount device having the structure according to the present invention, the annular passage formed in the outer peripheral edge of the partition member for partitioning the pressure receiving chamber and the equilibrium chamber is connected to the communication passage. The two types of orifice passages are skillfully formed by making them communicate with the pressure receiving chamber and the equilibrium chamber, respectively, and the flow of the electrorheological fluid in these passages is controlled according to the thickening based on the electrorheological effect due to the voltage application. As a result, the low dynamic spring / low damping characteristic and the high dynamic spring / high damping characteristic can be selectively exerted, and thereby, idling vibration and shake vibration generated in the same frequency band. It is possible to effectively deal with input vibrations in different states such as.

In addition, in the fluid-filled mount device according to the present invention, a relatively large partition member portion located inside the annular path is used, and a movable member is provided therein so as to absorb a pressure increase in the pressure receiving chamber. Since the pressure increase in the pressure receiving chamber can be effectively canceled by the displacement of the movable member, high frequency vibration is input to whichever of the two types of orifice passages that make up the orifice mechanism. However, even if no voltage is applied and the flow resistance of the fluid becomes large and it is no longer possible to pass through such an orifice passage, the pressure rise in the pressure receiving chamber can be effectively avoided. By virtue of this, it is possible to prevent the device from becoming rigid and to exhibit effective vibration isolation characteristics, and as a result, it is possible to sufficiently exhibit the effect of reducing so-called muffled noise with high frequency. That.

Further, according to the present invention, the two kinds of orifice passages are formed by simply connecting the annular passage formed in the partition member with the communicating passage.
Since they are formed by communicating with the pressure receiving chamber and the equilibrium chamber, respectively, the structure for forming such two kinds of orifice passages is extremely simplified, and thereby reliability can be improved and mass production thereof can be achieved. Therefore, it is possible to reduce the cost of the device advantageously.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an engine mount as one embodiment of the present invention, and FIG. 2 (a) is a plan view of a partition member used in such an engine mount. 2 (b) is a sectional view taken along line II-II in FIG. 2 (a), and FIGS. 3 (a) and 3 (b) respectively show the vibration frequency on the horizontal axis and the damping coefficient on the vertical axis. 6 is a graph showing dynamic characteristics of an exemplary engine mount by taking dynamic spring characteristics. Further, FIGS. 4 (a) and 4 (b) are views corresponding to FIGS. 2 (a) and 2 (b) showing another different example of the present invention, and FIG. 4 (a) is a plan view, FIG. 4 (b) shows the fourth
FIG. 4 is a sectional view taken along line IV-IV in FIG. Further, FIGS. 5 (a) and 5 (b) are diagrams corresponding to FIGS. 3 (a) and 3 (b) for explaining the dynamic characteristics of the mounting apparatus according to the present invention, and FIG. And the damping coefficient,
(B) is a graph showing the relationship between the vibration frequency and the dynamic spring characteristic. 10: Upper support bracket, 12: Lower support bracket 18: Bottom bracket, 22: Connection bracket, 24: Spacer bracket, 28: Rubber elastic body 30: Protective rubber film, 32: Diaphragm 34: Electrorheological fluid, 36: Partition member 38: Pressure receiving chamber, 40: Equilibrium chamber 42: Upper flow passage forming member 44: Lower flow passage forming member 46: Inner edge sealing ring, 48: Outer edge sealing ring 50: Annular passage, 52, 54: Communication hole 56: First orifice passage 58: Second orifice passage 60,62: Electrode, 64: External power supply 68: Movable plate

Claims (1)

[Claims] 1. A first support and a second support which are spaced apart from each other by a predetermined distance in a vibration input direction, and a rubber elastic body which elastically connects the first and second supports. Spread in a direction perpendicular to the vibration input direction, the outer peripheral edge portion is fluid-tightly fixed to the second support,
A partition member having an annular path extending along the outer peripheral edge portion thereof, and a vibration to be isolated, which is located on one side of the partition member and is at least partially defined by the rubber elastic body. A pressure-receiving chamber to be input, an equilibrium chamber located on the opposite side of the partition member from the pressure-receiving chamber, at least a part of which is defined by a flexible membrane, and the pressure-receiving chamber and the equilibrium chamber, respectively. The predetermined electro-rheological fluid enclosed and the annular passage formed in the outer peripheral edge of the partition member are made to communicate with the pressure receiving chamber by the first communicating portion, while the first communicating portion is different in the circumferential direction. By making the annular passage communicate with the equilibrium chamber by the second communication portion arranged at a position, between the first communication portion and the second communication portion, the length in the clockwise direction and the counterclockwise direction. Different first orifice passage and second orifice An orifice mechanism formed by forming respective refill passages, the second orifice passage being shorter than the first orifice passage, and provided in the partition member inside the annular passage,
A movable member capable of changing the volume of the pressure receiving chamber by a predetermined amount by displacement or deformation by a predetermined amount, and a pair disposed on at least opposite wall portions of the second orifice passage of the first and second orifice passages. And an energizing unit that regulates the flow of the electrorheological fluid in the orifice passage in which the pair of electrodes are arranged by forming an electric field by energizing between the pair of electrodes. Fluid-filled mounting device.