JPH0229900B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a vibration isolating mount that is inserted into a vibration system of an automobile or the like and performs a vibration isolating function. The present invention relates to a fluid-filled mount that mainly performs a vibration-isolating function in the axial direction of an inner shaft by a vibration isolating effect due to the elastic deformation of the inner shaft and a vibration damping effect based on the flow resistance of the incompressible fluid when it passes through an orifice.

(Prior art) In anti-vibration mounts that are inserted into vibration systems such as automobiles and perform anti-vibration functions, rubber elastic bodies have conventionally been used alone or in composites with synthetic resin, canvas, etc. Attenuation or isolation of vibrations was attempted based on the elastic deformation of the body.
However, it is difficult to satisfy both damping and isolation of vibrations only by elastic deformation of the rubber elastic body. Therefore, the fluid-filled mount is designed to isolate vibrations through elastic deformation of the rubber elastic body, and attenuate or insulate vibrations by utilizing the flow resistance and resonance effect when incompressible fluid passes through an orifice. is proposed.

By the way, as such a fluid-filled mount, for example, Japanese Patent Publication No. 48-36151 and Japanese Patent Publication No. 52
-There are some disclosed in Publication No. 16554, etc.
However, in the fluid-filled mounts disclosed in these publications, pockets in which an incompressible fluid is sealed and communicated by an orifice are formed spaced apart in the circumferential direction of a cylindrical rubber elastic body, and Since the volume of these pockets was changed by the load applied in the radial direction of the rubber elastic body, in response to the radial vibration of the rubber elastic body, the pressure generated due to the change in the volume of each pocket The difference allows incompressible fluid to pass through the orifice, thus providing good vibration damping or isolation, but for axial vibrations the volume of each pocket changes similarly. Since there is no pressure difference between the pockets and no incompressible fluid passes through the orifice, little damping or insulation effect can be expected. Therefore, it has been difficult to employ a vibration isolating mount of the type that is fitted into a predetermined inner shaft and mainly performs the vibration isolating function in the axial direction.

On the other hand, as a type of fluid-filled mount that is fitted into a predetermined inner shaft and mainly performs the vibration damping function in the axial direction, Japanese Patent Application Laid-Open No. 59-37348
There are some that are disclosed in the publication.

(Problems to be Solved by the Invention) However, with the fluid-filled mount disclosed in this publication, when installing, it is necessary to use two fluid-filled mounts with the same configuration as a set, and the individual fluid-filled mounts must be used as a set. Since the mount had a complex structure with multiple pockets in the circumferential direction on the inner and outer circumferential sides of the inner cylindrical rubber elastic body, it was difficult to say that productivity and ease of assembly were necessarily good. Moreover, it was inevitable that it would be disadvantageous in terms of cost.

(Means for Solving the Problems) In view of the above circumstances, the present invention is designed to be fitted into a predetermined inner shaft, and can effectively perform the vibration isolation function mainly in the axial direction of the inner shaft. This was done in order to provide a fluid-filled mount with a simple structure.

That is, the main points of the fluid-filled mount according to the present invention are (a) an inner cylinder member into which a predetermined inner shaft is inserted and fixed, and (b) a predetermined distance apart from the outside of the inner cylinder member. and (c) a cylindrical rubber elastic body arranged concentrically so as to form a predetermined annular space between the rubber elastic body and the inner cylinder member; (d) an end closing means that closes a space between corresponding axial ends of the rubber elastic body and the inner cylindrical member, thereby forming an airtight space in which both axial ends are respectively closed; a bracket member extending in the radial direction of the rubber elastic body, the inner peripheral edge side portion of which is embedded in the cylindrical wall of the rubber elastic body; and (e) a bracket member that is attached and fixed to the inner peripheral edge of the bracket member. On the other hand, the inner cylindrical member is slidably abutted on the outer circumferential surface of the inner cylinder member in a substantially fluid-tight manner to partition the annular sealed space in its radial direction and form two fluid chambers in the axial direction. , an annular bushing member made of a rubber elastic material, (f) a predetermined incompressible fluid sealed in each of the two fluid chambers, and (g) the two fluid chambers communicating with each other; and orifice means for allowing flow of the incompressible fluid between them.

(Functions and Effects) In a fluid-filled mount having such a configuration, two fluid chambers for storing an incompressible fluid are formed in the axial direction inside the inner cylindrical rubber elastic body, or one of the fluid chambers is connected to the orifice means. communicated by. Therefore, when a load is applied between the inner shaft and the bracket member due to the axial vibration of the inner shaft, one fluid chamber expands due to elastic deformation of the rubber elastic body, and the other fluid chamber expands. Shrink and
A pressure difference is created between the two fluid chambers which causes incompressible fluid in one fluid chamber to flow through the orifice means into the other fluid chamber. In other words, the axial vibration of the inner shaft is attenuated or insulated by the flow resistance and resonance effect when the incompressible fluid passes through the orifice means.

By the way, this vibration damping or insulation effect is
The larger the amount of incompressible fluid that passes through the orifice means, the larger the amount of incompressible fluid that passes through the orifice means, and the larger the amount of change in the volumes of the two fluid chambers. Therefore, in order to obtain a large vibration damping or insulation effect against vibrations applied in the axial direction of the inner shaft, the volume change of both fluid chambers should be It is necessary to make it larger.

Therefore, in the present invention, an annular bushing member that fluid-tightly partitions two fluid chambers is integrally attached to and held by a bracket member on its outer circumferential surface, while an inner cylinder member is attached on its inner circumferential surface. It is slidably abutted against the outer circumferential surface of.

In this way, the bushing member also moves relative to the inner cylinder member together with the bracket member, so that when a load is applied in the axial direction of the inner shaft, the bushing member moves in the axial direction. In addition, the amount of elastic deformation of the rubber elastic body can be made relatively large, and the amount of change in volume of the fluid chamber can be made large, so that the amount of incompressible fluid passing through the orifice means is also relatively large. As a result, it is possible to obtain a good damping or insulation effect on vibrations due to the flow resistance of the incompressible fluid, resonance effect, etc. On the other hand, when the inner circumferential surface of the bushing member is fixed to the outer circumferential surface of the inner cylinder member, the volume of the fluid chamber cannot be greatly changed by relative movement of the bushing member with respect to the inner cylinder member. Moreover, since the elastic deformation of the rubber elastic body in the axial direction is restrained by the bushing member, it is not possible to obtain a large change in the volume of the fluid chamber, and therefore good vibration damping or insulation effects cannot be expected. There isn't.

Furthermore, in the fluid-filled mount of the present invention, since the bushing member is slidable relative to the inner cylinder member, the axial rigidity can be reduced without reducing the radial rigidity. There is an advantage that a good vibration isolation effect can be obtained due to the elastic deformation of the rubber elastic body.

(Example) Hereinafter, in order to clarify the present invention more specifically, one example thereof will be described in detail based on the drawings.

First, FIGS. 1 and 2 show a longitudinal cross-sectional view and a cross-sectional view of a strut mount for an automobile, which is an embodiment of the present invention. In these figures, 10
is an inner cylindrical metal fitting, which has a predetermined inner shaft 12.
It consists of a cylindrical portion 14 that is fitted into and fixed to the cylindrical portion 14, and an outer flange portion 16 that extends radially outward from one end of the cylindrical portion 14. Further, 18 is a cylindrical rubber elastic body made of a rubber elastic material with a small dynamic spring constant, and is arranged concentrically at a predetermined distance on the outside of the cylindrical part 14 of the inner cylindrical fitting 10. A predetermined annular space is formed between the cylindrical portion 14 and the cylindrical portion 14 . In this embodiment, the cylindrical portion 14 of the inner cylindrical metal fitting 10 plays the role of an inner cylindrical member.

At the axial end of the rubber elastic body 18 located on the side of the outer flange portion 16 of the inner cylinder fitting 10, an inner peripheral portion is embedded in the cylinder wall of the rubber elastic body 18.
An annular caulking metal fitting 20 is integrally fixed by vulcanization adhesive. This caulking metal fitting 20 has a caulking part 22 on the outer circumference, and the caulking part 22 is caulked to a thin wall part 24 formed on the outer peripheral edge of the outer flange part 16 of the inner cylindrical metal fitting 10. In addition, as shown in FIG.
0 and the outer flange portion 16 is a caulking metal fitting 20.
A part of the rubber elastic body 18 that covers the inner circumferential part is interposed, thereby maintaining fluid tightness between them. Outer flange portion 1 of inner cylinder fitting 10
6, one opening of the annular space is fluid-tightly closed.As is clear from this, in this embodiment, the outer part of the inner cylindrical metal fitting 10 is closed in a fluid-tight manner. The flange portion 16 and the caulking metal fitting 20 constitute one end closing means in which a portion of the rubber elastic body 18 interposed therebetween serves as a sealing rubber layer.

Note that this sealing rubber layer does not necessarily need to be formed on the caulking metal fitting 20 side, and may be formed on the outer flange portion 16 side. Alternatively, it may be provided as a separate member.

Further, an annular closing plate 26 is integrally fixed to the opposite end of the rubber elastic body 18 by vulcanization adhesive. This closing plate 26 has a center hole 28 formed in the center of the inner cylindrical metal fitting 1.
The thin wall portion 30 formed at the end of the cylindrical portion 14 of No. The peripheral edge of the center hole 28 is sandwiched between the first stepped surface 32 and the first stepped surface 32, thereby being fixed to the inner cylinder fitting 10. Further, between this closing plate 26 and a second stepped surface 36 formed at the base end of the thin wall portion 30, a rubber elastic body 18 extending to the vicinity of the center hole 28 of the closing plate 26 is provided. The inner circumferential edge of the extension portion 34 is held, thereby maintaining fluid tightness between the closing plate 26 and the cylindrical portion 14 of the inner cylindrical fitting 10. The inner peripheral edge of the closing plate 26 is the inner cylindrical fitting 10
By being caulked to the end of the cylindrical portion 14, the remaining opening of the annular space is fluid-tightly closed. It is considered to be a tightly closed space. As is clear from the above description, in this embodiment, the extension part 34 of the rubber elastic body 18 is connected to the sealing layer from the end of the cylindrical part 14 of the inner cylindrical fitting 10 having the thin wall part 30 and the closing plate 26. The other end closing means is configured.

On the other hand, in the central part of the rubber elastic body 18 in the axial direction,
The bracket member 40 is inserted into the cylindrical wall of the rubber elastic body 18 with the peripheral edge of the center hole 38 extending in the radial direction of the rubber elastic body 18 and formed approximately at the center thereof.
is fixed. The bracket member 40 is fitted with a predetermined member 4 in a mounting hole 42 formed in the peripheral portion.
4, whereby the axially central portion of the rubber elastic body 18 is fixed to the member 44.

A metal cylindrical member 46 is fixed to the center hole 38 of the bracket member 40 at the outer peripheral surface of the axially central portion thereof. The outer peripheral surface and axial end surface of the cylindrical member 46 are vulcanized and bonded to the rubber elastic body 18 together with the bracket member 40, and the inner peripheral surface is exposed to the annular space. An annular bushing member 48 is provided between the inner circumferential surface of the cylindrical member 46 exposed to the annular space and the outer circumferential surface of the cylindrical portion 14 of the inner cylindrical fitting 10.

As shown in FIGS. 3 and 4, the bushing member 48 has an outer circumferential surface and an inner circumferential surface of an annular rubber sleeve 50 made of a rubber elastic material, respectively, and an outer sleeve 52 made of metal and a synthetic resin. The outer sleeve 52 is press-fitted and fixed to the inner peripheral surface of the cylindrical member 46 in a fluid-tight manner, and the inner sleeve 54 is vulcanized and bonded concentrically to the inner sleeve 54 of the inner cylindrical member 10. Part 14
The annular space is connected to the first fluid chamber 56 on the outer flange portion 16 side in a fluid-tight manner.
and a second fluid chamber 58 on the closing plate 26 side. In the fluid chambers 56 and 58 partitioned by the bushing member 48, an incompressible fluid such as water, polyalkylene glycol, silicone oil, or a low molecular weight polymer is sealed. Further, the inner sleeve 54 is slidable on the outer circumferential surface of the cylindrical portion 14, and thereby can be moved relative to the cylindrical portion 14 in the axial direction.

A pair of grooves 60 are formed on the inner circumferential surface of the inner sleeve 54 of the bushing member 48 at positions facing each other across the axis, each with an opening covered by the outer circumferential surface of the cylindrical portion 14 of the inner cylindrical fitting 10. are formed parallel to the axis, and a pair of communication passages 62 connecting the two fluid chambers 56 and 58 are formed by grooves 60 whose openings are closed. These communication paths 62
constitutes an orifice means, and when a pressure difference occurs between the fluid chambers 56 and 58, an uncompressed flow is transferred from the fluid chamber on the higher pressure side to the fluid chamber on the lower pressure side through these communication passages 62. This allows sexual fluids to flow.

Furthermore, a pair of arc-shaped rigid plates 64 are vulcanized and bonded to the radially intermediate portion of the rubber sleeve 50 symmetrically with the inner cylinder sleeve 54 in between.
Each of these rigid plates 64 has a diameter of 1/1 of the circumference.
4, and the rubber sleeve 50 has a thicker thickness in the axial direction at a portion that supports these rigid plates 64, and a thinner thickness at a portion that sandwiches these rigid plates 64 in the circumferential direction. In the strut mount of this embodiment, the radial rigidity is significantly higher in the direction passing through the center of the rigid plate 64 than in the direction perpendicular thereto. Note that such a rigid plate is provided as necessary, and its length in the circumferential direction, placement position, etc. are appropriately set depending on the purpose.

Further, as shown in FIG. 1, a rubber elastic body 1 corresponding to the central portion of each fluid chamber 56 and 58 is
An annular restraint fitting 66 is provided on the outer peripheral surface of each of the parts 8 and 8.
are integrally provided by vulcanization adhesion, and these restrict the outward bulge of the intermediate portion of the rubber elastic body 18.

By the way, the strut mount having the above-mentioned configuration is manufactured in the following manner.

First, the caulking metal fitting 20 before caulking, the closing plate 26, the bracket member 40 to which the cylindrical member 46 is fixed, and a pair of restraining metal fittings 66 are set in a predetermined mold, and a rubber elastic material is placed in the gap between them. is injected and the rubber elastic body 18 is vulcanized and molded, and each member set in the mold is vulcanized and bonded to the rubber elastic body 18. At this time,
As shown in FIG. 5, on the end surface of the rubber elastic body 18 constituting the sealing rubber layer on the caulking fitting 20 side,
Two sealing lips 68 are formed in the circumferential direction, and one sealing lip 68 is similarly formed on the inner peripheral edge of the extension portion 34 at the opposite end. In addition, apart from this, the bushing member 48
are vulcanized and molded together.

The bushing member 48 is then pre-compressed and press-fitted into the cylindrical member 46 and secured. and,
After the bushing member 48 is fixed, the inner cylindrical metal fitting 10 before the thin wall portion 30 is caulked is inserted into the bushing member 48 in a predetermined incompressible fluid, and the rubber elastic body 1
8 is pre-compressed, the caulking part 22 of the caulking metal fitting 20 and the thin wall part 30 of the cylindrical part 14 of the inner cylindrical metal fitting 10
is caulked. In this way, the fluid chambers 56 and 58 can be formed and the incompressible fluid can be sealed in the fluid chambers 56 and 58 at the same time. This makes it possible to perform operations quickly and increases the productivity of strut mounts. In addition, the caulking part 2 of the caulking fitting 20
2 and a thin wall portion 3 at the end of the cylindrical portion 14 of the inner cylinder fitting 10
0 means that, as shown in FIGS. 5 and 6, before caulking, the tip ends of the rubber elastic body 18 and the inner cylindrical metal fitting 10, respectively.
parallel to the axial direction.

With the strut mount configured as described above being interposed between the predetermined inner shaft 12 and the member 44, the rubber elastic body 18 is now inserted as shown by the arrow P in FIG. When a vibration load is applied in the axial direction, the rubber elastic body 18 located on one side in the vertical direction with the bracket member 40 in between, depending on the direction in which the load is applied.
The portion of the rubber elastic body 18 located on the other side is deformed in tension. As a result, the volume of the fluid chamber on the side where the rubber elastic body 18 is compressed and deformed decreases, and the pressure increases. Further, the volume of the fluid chamber on the side where the rubber elastic body 18 is tensilely deformed increases, and the pressure decreases. Therefore, the incompressible fluid is caused to flow through the communication path 62 from the fluid chamber where the pressure has increased to the fluid chamber where the pressure has decreased. That is, the vibration of the rubber elastic body 18 in the axial direction is attenuated by the flow resistance of the incompressible fluid when passing through the communication path 62, the resonance effect, and the like.

Incidentally, this vibration damping effect will be better exhibited as the amount of incompressible fluid passing through the communication passage 62 increases, but in this embodiment, the bushing member 48 that partitions the fluid chambers 56 and 58 is As described above, since the innermost synthetic resin inner sleeve 54 is slidably fitted to the cylindrical portion 14 of the inner cylindrical fitting 10, the communication passage 62 is connected to a relatively large amount of incompressible fluid. flows, and therefore a sufficiently good vibration damping effect can be obtained. That is, as the rubber elastic body 18 is elastically deformed, the bushing member 4
8 is an inner cylindrical metal fitting 10 integrated with the bracket member 40.
is moved relative to the cylindrical portion 14 in the axial direction, and the volumes of both fluid chambers 56 and 58 are efficiently changed by elastic deformation of the rubber elastic body 18;
Since the elastic deformation of the rubber elastic body 18 is not so restricted by the bushing member 48 and can be relatively large, the volumes of both fluid chambers 56 and 58 change sufficiently in response to the load in the axial direction. Therefore, the amount of incompressible fluid passing through the communication path 62 increases, and a sufficient vibration damping effect can be obtained.

Furthermore, in this embodiment, as described above, the restraint fitting 66 is provided on the outer circumference of the rubber elastic body 18 to prevent the rubber elastic body 18 from expanding outward, so that the axial direction Rubber elastic body 1 against load
8 also has the advantage of being effectively expanded and contracted in the axial direction. This also increases the amount of incompressible fluid passing through the communication path 62. It should be noted that the restraining metal fittings 66 do not necessarily need to be provided in a pair, and only one of them may be provided, or even none at all may be provided.

Furthermore, in this embodiment, since the bushing member 48 is slidable relative to the cylindrical portion 14 of the inner cylindrical fitting 10, the radial rigidity of the strut mount is maintained high while the axial direction It also has the advantage of lowering rigidity. In other words, this makes it possible to easily elastically deform the rubber elastic body 18 in the axial direction and obtain a good vibration isolation effect. This also made it possible to increase the amount of incompressible fluid that passes through it.

In addition, in this embodiment, as described above, since the strut mount is assembled with the rubber elastic body 18 and the rubber sleeve 50 of the bushing member 48 pre-compressed, the tensile stress thereon is effectively suppressed. Moreover, since almost no shear stress is generated in these vulcanized bond parts, the durability of the strut mount is significantly improved.

Although one embodiment of the present invention has been described above, this is a literal illustration, and the present invention should not be interpreted as being limited to this specific example. For example, in the above embodiment, the cylindrical portion 14 that constitutes the inner cylindrical member
Although the outer flange portion 16 and the outer flange portion 16 forming a part of the one end closing means are integrally formed, it is also possible to form them as separate members.

Further, in the embodiment described above, a groove 60 is formed on the inner circumferential surface of the inner sleeve 54 of the bushing member 48, and the opening of this groove 60 is covered with the outer circumferential surface of the cylindrical portion 14 of the inner cylindrical fitting 10. Although a pair of communication passages 62 were formed as orifice means, the communication passages as orifice means were formed by covering the opening of a groove formed on the outer circumferential surface of the cylindrical portion 14 with the inner circumferential surface of the inner sleeve 54. Alternatively, it may be formed by a groove provided between the outer sleeve 52 of the bushing member 48 and the cylindrical member 46. In addition, the inner sleeve 54 and the outer sleeve 5
2. Alternatively, an axial through hole may be formed in the cylindrical member 46 or the rigid plate 64, and this may be used as the orifice means, and a dedicated tube may be embedded in the rubber sleeve 50 of the bushing member 48 by penetrating it in the axial direction.
It is also possible to employ the space within the tube as an orifice means. Furthermore, the communication passages serving as the orifice means do not necessarily have to be provided as a pair diametrically apart as in the above embodiment, nor do they need to be provided in parallel to the axis; The formation position, etc. is determined as appropriate, taking into consideration various factors such as the frequency of vibration to be attenuated or insulated, the viscosity constant of the incompressible fluid, the cross-sectional area of the communication passage as each orifice means, and its length. It will be done.

Further, in the embodiment described above, the inner sleeve 54 was directly fixed to the inner circumferential surface of the rubber sleeve 50 of the bushing member 48 by vulcanization adhesive, but the inner sleeve 54 is indirectly fixed to the rubber sleeve 50. It may be fixed. For example, as shown in FIGS. 7 and 8, the bushing member 4
A metal intermediate sleeve 70 is integrally vulcanized and bonded to the inner circumferential surface of the rubber sleeve 50 of No. 8, and an inner sleeve 54 having a groove 60 is press-fitted and fixed to the inner circumferential surface of the vulcanized intermediate sleeve 70. It is okay to do so. In this case, the orifice means can be formed by a through hole formed in the intermediate sleeve 70 or a groove formed between the intermediate sleeve 70 and the inner sleeve 54. Further, in this embodiment, the rubber sleeve 50 is not provided with the rigid plate 64, and the rigidity in the radial direction is uniformly the same.

Furthermore, in the above description, the inner sleeve 54, which is located at the innermost side of the bushing member 48 and is slidably fitted to the cylindrical portion 14 of the inner cylindrical fitting 10, is made of synthetic resin. It is also possible to make it.

Further, in the above embodiment, the present invention was applied to a strut mount, but the present invention is also applicable to other mounts, such as member mounts, body mounts, cab mounts, tension rod bushes, engine mounts, and suspension mounts. It can also be applied to shock absorbers, etc., and can also be applied to anti-vibration mounts for vehicles other than automobiles.

Although not listed in detail, it goes without saying that the present invention can be implemented with various modifications and improvements within the scope of the spirit thereof.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention, which corresponds to the - section in FIG. 2, and FIG. 2 is a - sectional view in FIG. 1. 3 is a longitudinal sectional view of the bushing member of the embodiment shown in FIG. 1, corresponding to the - section in FIG. 4, and FIG. 4 is a plan view of FIG. 3. FIG. 5 is a cross-sectional view corresponding to FIG. 1 showing the rubber elastic body and the member integrally vulcanized and bonded thereto before the incompressible fluid is filled in the embodiment of FIG. 1. FIG. 6 is a front sectional view showing the state of the inner cylindrical fitting 10 of FIG. 1 before caulking. FIG. 7 is a view corresponding to FIG. 3 showing a bushing member according to another embodiment of the present invention, and FIG. 8 is a plan view thereof. 10: Inner cylinder metal fitting, 12: Inner shaft, 1
4: Cylindrical part (cylindrical member), 16: Outer flange part,
18: rubber elastic body, 20: caulking metal fitting, 26: closing plate, 30: thin wall portion, 40: bracket member, 46: cylindrical member, 48: bushing member, 5
0: Rubber sleeve, 52: Outer sleeve, 54:
Inner sleeve, 56, 58: fluid chamber, 60: groove,
62: Communication path (orifice means), 64: Rigid plate, 66: Restraint fitting, 68: Lip for sealing, 70: Intermediate sleeve.

Claims (1)

[Scope of Claims] 1. An inner cylindrical member into which a predetermined inner shaft is inserted and fixed, and a predetermined annular space formed between the inner cylindrical member and the inner cylindrical member at a predetermined distance outside the inner cylindrical member. a cylindrical rubber elastic body arranged concentrically so that the annular space between the rubber elastic body and the inner cylinder member corresponds to that in the axial direction of the rubber elastic body and the inner cylinder member; an end closing means that forms a closed space with both ends in the axial direction closed by closing between the ends; a bracket member that extends in the radial direction of the rubber elastic body; and a bracket member that is attached and fixed to the inner circumferential edge of the bracket member and that is slidably in contact with the outer circumferential surface of the inner cylindrical member in a substantially fluid-tight manner. Being forced to
an annular bushing member made of a rubber elastic material that partitions the annular sealed space in its radial direction and forms two fluid chambers in the axial direction; and a predetermined incompressible fluid sealed in each of the two fluid chambers. and orifice means for interconnecting the two fluid chambers and permitting flow of the incompressible fluid between the fluid chambers. 2. The bushing member has a resin cylinder on its annular inner periphery, and the inner cylinder member is slidably inserted into the resin cylinder in a substantially fluid-tight manner. A fluid-filled mount as described in Scope 1. 3. The bushing member includes an innermost resin cylindrical body into which the inner cylindrical member is slidably fitted in a substantially fluid-tight manner, and an outermost outer sleeve attached to the inner peripheral edge of the bracket member. The fluid-filled mount according to claim 1, further comprising a sleeve made of a rubber elastic material interposed between the resin cylinder and the outer sleeve. 4. The bushing member includes an outermost outer sleeve attached to an inner peripheral edge of the bracket member, an inner sleeve disposed concentrically within the outer sleeve, and an intervening member between the outer sleeve and the inner sleeve. A patent comprising: a rubber-elastic material sleeve; and a resin cylinder fitted and fixed into the inner sleeve, into which the inner cylinder member is slidably inserted in a substantially fluid-tight manner. Claim 1
Fluid-filled mount as described in section. 5. The bracket member has a cylindrical support at its inner peripheral edge, and the outermost outer sleeve of the bushing member is fitted and fixed into the cylindrical support. The fluid-filled mount described in item 4. 6. Claims 3 to 5, wherein the bushing member includes at least one rigid plate embedded in a sleeve made of a rubber elastic material and extending over a predetermined length in the circumferential direction of the sleeve. A fluid-filled mount described in any of the above. 7. The orifice means covers a groove provided on either the outer circumferential side of the inner cylinder member or the inner circumferential surface of the resin cylinder of the bushing member with the circumferential surface of the other one thereof. A fluid-filled mount according to any one of claims 2 to 6 formed thereby. 8. The end closing means includes an outer flange portion extending radially outward, which is integrally provided at at least one end in the axial direction of the inner cylinder member, and fluid-tight with an outer peripheral edge of the outer flange portion. 2. The fluid-filled mount according to claim 1, further comprising an annular caulking fitting provided at an axial end portion of the rubber elastic body, which is caulked to the rubber elastic body. 9 A sealing rubber layer is formed on at least one of opposing surfaces of the caulking metal fitting and the outer flange portion, and the sealing rubber layer forms a seal between the caulking metal fitting and the outer flange portion. A fluid-filled mount according to item 8. 10 The end closing means has an annular closing plate extending radially inward and provided at at least one end in the axial direction of the rubber elastic body, and the inner circumferential edge of the closing plate and the inside The fluid-filled mount according to claim 1, wherein at least one axial direction of the annular space is closed by caulking the axial end of the cylindrical member.