JP7132835B2 - Fluid-filled anti-vibration device and manufacturing method of fluid-filled anti-vibration device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration damping device applied to an engine mount of an automobile, and more particularly to a fluid filled vibration damping device having a fluid chamber in which a fluid is sealed and a method for manufacturing the fluid filled vibration damping device. is.

2. Description of the Related Art Conventionally, as one type of anti-vibration device used for engine mounts of automobiles, etc., there has been known a fluid-filled anti-vibration device having therein a fluid chamber containing a fluid. A fluid-filled vibration isolator, for example, a liquid-sealed vibration isolator disclosed in Japanese Patent Application Laid-Open No. 2017-180779 (Patent Document 1), has a first mounting member and a second mounting member. A first fluid chamber, which is elastically connected by a rubber elastic body and whose wall is partially composed of the first rubber elastic body, and a wall part of which is composed of the second rubber elastic body. A second fluid chamber is provided on both sides of the partition member, and the first fluid chamber and the second fluid chamber are communicated with each other through a flow passage.

By the way, the fluid-filled vibration damping device comprises a second mounting member fixed to the first rubber elastic body, a holding member holding the second rubber elastic body, a first fluid chamber, and a second fluid chamber. A partition member for partitioning the chamber is combined with the partition member. In Patent Document 1, the second mounting member and the holding member are partitioned by hooking an elastic hook portion provided on the holding member to a protruding locking portion provided on the second mounting member. They are connected in the axial direction with the member sandwiched therebetween.

However, as a result of the inventor's investigation, a new problem became clear. That is, it was found that in the structure of Patent Document 1, it may be difficult to ensure stable sealing performance between the partition member and the second mounting member and the holding member. In particular, it has been found that it can be difficult to obtain sufficient and compatible sealing performance between the partition member and the second mounting member and between the partition member and the retaining member.

JP 2017-180779 A

The problem to be solved by the present invention is to manufacture a fluid-filled vibration damping device and a fluid-filled vibration damping device with a novel structure that can stably obtain fluid-tightness between a first fluid chamber and a second fluid chamber. to provide a method.

Hereinafter, aspects of the present invention that have been made to solve such problems will be described. It should be noted that the constituent elements employed in each aspect described below can be employed in any possible combination.

That is, in a first aspect of the present invention, a first mounting member and a second mounting member are elastically connected by a first rubber elastic body, and a partition member supported by the second mounting member is provided. A first fluid chamber whose wall is partially composed of the first rubber elastic body and a second fluid chamber whose wall is partially composed of the second rubber elastic body are provided on both sides of the fluid chamber. are formed, and the first fluid chamber and the second fluid chamber communicate with each other through a flow passage formed by the partition member, wherein the outer peripheral portion of the partition member is A first hook portion superimposed on the second mounting member with a first seal rubber integrally formed with the first rubber elastic body interposed therebetween and provided on the outer peripheral side of the first seal rubber. While the partition member and the second mounting member are locked and fixed by The partition member and the holding member are superimposed on the outer peripheral portion of the partition member with the formed second seal rubber interposed therebetween, and the partition member and the holding member are held together by a second hook provided on the outer peripheral side of the second seal rubber. are locked and fixed , and both the first hook and the second hook are formed by a flexible locking piece and a locking portion having a locking surface on which the locking piece is hooked. The first hook is in a hooked state by superimposing the partition member on the second mounting member in the vertical direction of the mount, and the second hook is attached to the partition. The hooking state is achieved by superimposing the holding member on the member in the vertical direction of the mount .

According to the fluid-filled vibration damping device constructed according to the first aspect, the partition member and the second mounting member are locked and fixed by the first hook portion, and the partition member and the holding member It is locked and fixed by the second hook. Therefore, the partition member is appropriately positioned between the second mounting member and the holding member, and the desired sealing performance is stably ensured between the partition member and the second mounting member and the holding member. be.

Further, the sealing performance between the partition member and the second mounting member is set by the tightening force exerted by the first hook portion on the first seal rubber, and the sealing performance between the partition member and the holding member is set. , is set by the clamping force exerted by the second hook on the second seal rubber. Therefore, each seal performance can be set independently of each other in the seal structure between the partition member and the second mounting member and the seal structure between the partition member and the holding member. Therefore, for example, when there is a difference in the properties of the first seal rubber and the second seal rubber, the difference in deformation rigidity is considered, or the difference in internal pressure acting on the first fluid chamber and the second fluid chamber is calculated. , the performance of each seal structure can be adjusted appropriately. In addition, since the locking piece recovers its shape after passing over the locking portion, the locking piece can be easily hooked on the locking surface. It can be locked and fixed easily just by bringing it closer.

A second aspect of the present invention is the fluid-filled vibration damping device according to the first aspect, wherein a bracket having a fitting groove into which the second mounting member is inserted from the side is provided, The second mounting member and the holding member are fitted between the opposing groove side surfaces of the fitting groove in an overlapping direction with the partition member interposed therebetween.

According to the second aspect, the partition member and the second mounting member are locked and fixed by the first hook, and the partition member and the holding member are locked and fixed by the second hook. , the second mounting member is inserted into the fitting groove of the bracket. Thus, when the bracket is mounted, the partition member is positioned with respect to the second mounting member and the holding member, respectively, so that the second mounting member and the holding member are positioned on the groove side surfaces facing each other in the fitting groove. On the other hand, even if they are fitted in the overlapping direction sandwiching the partition member, the sealing performance between the partition member and the second mounting member and the holding member is stably ensured.

A third aspect of the present invention is the fluid-filled vibration damping device according to the first or second aspect, wherein the first hook portion and the second hook portion extend in the circumferential direction of the partition member. are provided at different positions.

According to the third aspect, the first hooking portion and the second hooking portion can be provided in a space-efficient manner, and the fluid-filled vibration damping device can be miniaturized and easily manufactured.

A fifth aspect of the present invention is the fluid-filled vibration damping device according to any one of the first to fourth aspects, wherein the partition member is divided in the overlapping direction with respect to the second mounting member. It is composed of a plurality of split structures arranged in parallel with each other, and a movable body is incorporated between the superimposed surfaces of the split structures.

According to the fifth aspect, the partition member has a structure in which the movable body is incorporated between the superimposed surfaces of the split structures, thereby improving vibration isolation performance. Moreover, since the partition member is divided in the overlapping direction with respect to the second mounting member, the divided structure of the partition member can be sandwiched and held between the second mounting member and the holding member in the overlapping direction. can also In particular, if the first hook and the second hook are provided on the same divided structure in the partition member, the partition member can be attached to the second mounting member and the holding member by the first hook and the second hook. By being locked and fixed by the hooks, the plurality of divided structures are held in a mutually overlapped state.

That is, in the sixth aspect of the present invention, the first mounting member and the second mounting member are elastically connected by the first rubber elastic body, and the partition member supported by the second mounting member is A first fluid chamber whose wall is partially composed of the first rubber elastic body and a second fluid chamber whose wall is partially composed of the second rubber elastic body are provided on both sides of the fluid chamber. are formed, and the first fluid chamber and the second fluid chamber are communicated with each other through the flow passage formed by the partition member. (b) obtaining an integrally vulcanized product of the first rubber elastic body in which the one mounting member and the second mounting member are fixed; A first seal rubber integrally formed with the body is sandwiched between and superimposed on the second mounting member, and a first hook provided on the outer peripheral side of the first seal rubber separates the partition member from the second mounting member. (c) a second holding member for holding the outer peripheral portion of the second rubber elastic body integrally formed on the outer peripheral portion of the second rubber elastic body; a step of overlapping a seal rubber on the outer peripheral portion of the partition member and locking and fixing the partition member and the holding member by a second hook portion provided on the outer peripheral side of the second seal rubber; , wherein each of the first hooking portion and the second hooking portion is composed of a flexible locking piece and a locking portion having a locking surface on which the locking piece is hooked. , the first hooking portion is placed in a hooked state by superimposing the partition member on the second mounting member in the vertical direction of the mount, and the second hooking portion is adapted to vertically mount the holding member on the partition member. A hooked state is created by overlapping in the direction .

According to the method for manufacturing a fluid-filled vibration damping device according to the sixth aspect, the partition member and the second attachment member are fixed by the first hook portion by the step of locking and fixing the partition member and the second attachment member. Since the member is properly positioned, the desired sealing performance is stably ensured between the partition member and the second mounting member. In addition, since the partition member and the holding member are appropriately positioned by the step of locking and fixing the partition member and the holding member by the second hook portion, the desired sealing performance can be achieved between the partition member and the holding member. is stably ensured.

Further, the sealing performance between the partition member and the second mounting member is set by the tightening force exerted by the first hook portion on the first seal rubber, and the sealing performance between the partition member and the holding member is set. , is set by the clamping force exerted by the second hook on the second seal rubber. Therefore, each seal performance can be set independently of each other in the seal structure between the partition member and the second mounting member and the seal structure between the partition member and the holding member. Therefore, it is necessary to appropriately adjust the performance of each seal structure according to the difference in the characteristics of the first seal rubber and the second seal rubber, the difference in internal pressure acting on the first fluid chamber and the second fluid chamber, etc. can be done.

According to the present invention, it is possible to easily and highly ensure the desired fluid tightness in the first fluid chamber and the second fluid chamber.

The perspective view which shows the engine mount as 1st embodiment of this invention. FIG. 2 is a front view of the engine mount shown in FIG. 1; FIG. 3 is a rear view of the engine mount shown in FIG. 2; FIG. 3 is a right side view of the engine mount shown in FIG. 2; FIG. 3 is a plan view of the engine mount shown in FIG. 2; VI-VI sectional view of FIG. FIG. 6 is a cross-sectional view of the engine mount shown in FIG. 2 and corresponds to the VII-VII cross section of FIG. 5; FIG. 3 is a perspective view of a mount body constituting the engine mount shown in FIG. 2; 9 is a perspective view showing the mount body of FIG. 8 at another angle; FIG. FIG. 9 is a front view of the mount main body shown in FIG. 8; FIG. 11 is a rear view of the mount body shown in FIG. 10; FIG. 11 is a right side view of the mount main body shown in FIG. 10; FIG. 11 is a bottom view of the mount body shown in FIG. 10; XIV-XIV sectional view of FIG. FIG. 9 is a cross-sectional view of an integrally vulcanized molded product that constitutes the mount body shown in FIG. 8 ; 9 is a perspective view of an assembly including a partition member, a flexible film, and a holding member that constitute the mount body shown in FIG. 8. FIG. FIG. 17 is a perspective view showing the assembly of FIG. 16 from another angle; FIG. 17 is a plan view of the assembly shown in FIG. 16; XIX-XIX sectional view of FIG. 17 is an exploded perspective view of the assembly shown in FIG. 16; FIG. FIG. 17 is a cross-sectional view for explaining a process of assembling the assembly shown in FIG. 16 into an integrally vulcanized product;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 to 7 show an automobile engine mount 10 as a first embodiment of a fluid-filled vibration damping device constructed in accordance with the present invention. The engine mount 10 has a structure in which an inner bracket 14 and an outer bracket 16 are attached to a mount body 12 . Further, the mount body 12 includes an integrally vulcanized molding 18, as also shown in FIGS. 8-14. In the following description, as a general rule, the up-down direction means the up-down direction in FIG. 2, and the front-rear direction means the left-right direction in FIG.

More specifically, the integrally vulcanized molded product 18 has a structure in which a first mounting member 20 and a second mounting member 22 are elastically connected by a main rubber elastic body 24 as a first rubber elastic body. ing.

The first mounting member 20 is made of metal, hard synthetic resin, or the like, and has a substantially cylindrical solid block shape when viewed in the axial direction. The first mounting member 20 of the present embodiment is made of a metal such as iron or an aluminum alloy, and is highly rigid against deformation. The diameter of the first mounting member 20 gradually decreases downward, and in this embodiment, the outer peripheral surface of the first mounting member 20 is convex outward in the longitudinal section shown in FIG. composed of faces. Further, the upper end portion of the first mounting member 20 protrudes to the outer periphery with a substantially rectangular outer peripheral surface when viewed in the axial direction. Furthermore, the first mounting member 20 has a threaded hole 26 extending vertically along the center axis and opening to the upper surface.

The second mounting member 22 is made of hard synthetic resin, metal, or the like, and has a frame shape as a whole. The second mounting member 22 of the present embodiment is made of a synthetic resin material such as a fiber-reinforced resin material to reduce weight and improve flexibility in shape. In addition, the second mounting member 22 of the present embodiment has an outer peripheral surface that is approximately quadrangular and an inner peripheral surface that is approximately circular when viewed in the axial direction. Furthermore, the inner peripheral surface of the second mounting member 22 has an annular stepped surface 28 extending substantially in the direction perpendicular to the axis. The inner peripheral surface of the second mounting member 22 has a lower portion larger in diameter than the upper portion due to a stepped surface 28 . Also, the second mounting member 22 has the fitting rubber layers 30 fixed to both the left and right sides thereof. The fitting rubber layer 30 extends to the top and bottom surfaces of the second mounting member 22 .

Further, as shown in FIGS. 10 to 12, recesses 32 are formed in the lower portions of the left and right side portions of the second mounting member 22 at both front and rear end portions. The four recesses 32, 32, 32, 32 are provided with first locking pieces 34, respectively. The first locking piece 34 is substantially U-shaped and flexible. It protrudes to the lower side than the second mounting member 22. - 特許庁

As shown in FIG. 15, the first mounting member 20 and the second mounting member 22 are arranged substantially on the same central axis and elastically connected to each other by the main rubber elastic body 24 . The main rubber elastic body 24 has a substantially truncated conical shape. A second mounting member 22 is vulcanized and bonded to the portion. Thus, the main rubber elastic body 24 is formed as an integrally vulcanized molded product 18 that includes the first mounting member 20 and the second mounting member 22 .

Further, the main rubber elastic body 24 is provided with a concave portion 36 which has an inverted, substantially mortar shape and is open to the bottom surface. Furthermore, a first seal rubber 38 extending downward from the peripheral edge of the opening of the recess 36 is integrally formed with the main rubber elastic body 24 . The first seal rubber 38 is fixed to the inner peripheral surface of the second mounting member 22, and the inner peripheral surface of the second mounting member 22 including the step surface 28 is covered with the first seal rubber 38. .

A partition member 40 is attached to the integrally vulcanized molded product 18 of the main rubber elastic body 24 . As shown in FIGS. 16 to 20, the partition member 40 has a substantially disk shape as a whole, and a partition member main body 42 as a divided structure and a lid member 44 as a divided structure are arranged vertically. has a structure superimposed on

The partition member main body 42 is made of hard synthetic resin, metal, or the like, and has a substantially disk-shaped upper portion as shown in FIGS. The partition member main body 42 of the present embodiment is made of a synthetic resin material such as a fiber-reinforced resin material to reduce weight and improve flexibility in shape. Further, the partition member main body 42 has a housing recess 46 that opens on the top surface and a lower recess 48 that opens on the bottom surface. The partition member main body 42 has a circumferential groove 50 that opens in the upper surface and extends in the circumferential direction. As shown in FIG. 19 , a plurality of first through holes 52 are formed through the bottom wall of the accommodation recess 46 in the vertical direction. A substantially cylindrical connecting pin 54 protruding upward is provided in the central portion of the bottom wall portion of the accommodation recess 46 and in the peripheral wall portion of the accommodation recess 46 .

A first locking projection 56 is provided on the upper portion of the partition member main body 42 as a locking portion projecting outward in the front-rear direction. The first locking projections 56 are formed in a substantially rectangular bar shape extending in the front-rear direction, and are provided at both ends in the left-right direction of the upper portion of the partition member main body 42 . In addition, in this embodiment, the locking surface 58 is configured by the lower surface of the first locking projection 56 .

A lower portion of the partition member main body 42 is integrally formed with a second locking projection 60 as a locking portion having an outer peripheral surface that is substantially square in axial view. The second locking projection 60 has a substantially plate-like shape that protrudes outward from the upper portion at the four corners of the partition member main body 42 , and the upper surface of the second locking projection 60 constitutes a locking surface 62 .

The lid member 44 is made of metal or the like, and has a thin, substantially disk shape. The lid member 44 is formed with a plurality of second through holes 64 penetrating vertically. A plurality of pin insertion holes 66 are formed vertically through a portion of the lid member 44 outside the second through hole 64 .

The partition member main body 42 and the lid member 44 are overlapped in the vertical direction and connected to each other. In this embodiment, a plurality of connecting pins 54 provided in the partition member main body 42 are inserted into each one of a plurality of pin insertion holes 66 provided in the lid member 44, and the tip portion of each connecting pin 54 is The distal end portion of each connecting pin 54 is locked and fixed to the opening peripheral portion of the pin insertion hole 66 by being deformed and expanded in diameter. As a result, the partition member main body 42 and the lid member 44 are inseparably connected to form the partition member 40 .

By overlapping the partition member main body 42 and the lid member 44 , the upper opening of the accommodation recess 46 in the partition member main body 42 is covered with the lid member 44 . A movable film 68 as a movable body is accommodated in the accommodation recess 46 provided between the overlapping surfaces of the partition member main body 42 and the lid member 44 . The movable film 68 is a substantially disk-shaped rubber elastic body, and has thick inner and outer peripheral ends. A shaft insertion hole 70 is formed in the central portion of the movable film 68 so as to penetrate vertically. By inserting the connecting pin 54 in the center of the lid member 44 into the shaft insertion hole 70 , the movable film 68 is housed in the housing recess 46 with its central portion positioned in the lid member 44 . , the thinned radially intermediate portion can be vertically displaced by elastic deformation.

The opening of the circumferential groove 50 of the partition member body 42 is covered with the lid member 44 by overlapping and fixing the partition member body 42 and the lid member 44 . Thereby, a tunnel-shaped flow path extending in the circumferential direction is formed between the partition member main body 42 and the lid member 44 .

The partition member 40 having such a structure is supported by the second mounting member 22 with its upper portion inserted into the inner peripheral side of the second mounting member 22 . That is, the first locking projection 56 of the partition member main body 42 is inserted into the inner periphery of the first locking piece 34 of the second mounting member 22 so that the tip portion of the first locking piece 34 The second mounting member 22 and the partition member 40 are connected to each other in the vertical direction by being hooked on the locking surface 58 of the one locking projection 56 and locked and fixed. As described above, in the present embodiment, the first hook portion 72 that locks and fixes the second mounting member 22 and the partition member 40 to each other includes the first locking piece 34 of the second mounting member 22, and the first locking projection 56 of the partition member 40 . In addition, since the plurality of first locking pieces 34 and the plurality of first locking projections 56 are provided, the plurality of first hooking portions 72 are provided at positions separated from each other in the circumferential direction.

In a state in which the second mounting member 22 and the partition member 40 are locked and fixed by the first hook portion 72 , the upper surface of the outer peripheral end portion of the lid member 44 of the partition member 40 is the stepped surface of the second mounting member 22 . 28 with the first seal rubber 38 interposed therebetween.

Thereby, the first seal rubber 38 is compressed in the locking direction by the first hook portion 72 . That is, the first hooking portion 72 is engaged to prevent the second mounting member 22 and the partition member 40 from separating from each other due to the reaction force of the compression of the first seal rubber 38 . The first seal rubber 38 is held in a compressed state over the entire circumference by the locking of the first hook portion 72 .

The first sealing rubber 38 is pressed against the facing surfaces of the outer peripheral edge of the lid member 44 and the second mounting member 22, so that the lid member 44 and the second mounting member 22 are fluid-tight. is sealed in In short, the partition member 40 is superimposed on the second mounting member 22 in the vertical direction, and the first seal rubber 38 is sandwiched between the surfaces of the second mounting member 22 and the partition member 40 superimposed in the vertical direction. As a result, the space between the second mounting member 22 and the partition member 40 is fluid-tightly sealed over the entire circumference by the first seal rubber 38 .

It is desirable that the second mounting member 22 and the partition member 40 are slightly separated in the vertical direction to form a gap when they are locked and fixed to each other by the first hook portion 72 . Accordingly, it is possible to prevent the compression force exerted on the first seal rubber 38 from being reduced due to the contact between the second mounting member 22 and the partition member 40 .

When the second mounting member 22 and the partition member 40 are locked and fixed to each other by the first hook portion 72, a mutual positioning mechanism is formed not only in the vertical direction, which is the overlapping direction, but also in the lateral direction. be. That is, the lateral positioning action can be exhibited between the second mounting member 22 and the partition member 40 by the contact action of the first locking piece 34 contacting the side surface of the partition member 40 . Furthermore, in this embodiment, the second mounting member 22 and the partition member 40 overlap each other in the lateral direction with the first seal rubber 38 interposed therebetween, thereby forming a lateral positioning mechanism. there is

Also, the first locking projection 56 of the partition member 40 is provided on the partition member main body 42 positioned below the lid member 44 . Therefore, even if the partition member main body 42 and the lid member 44 are overlapped without being connected, the first locking piece 34 of the second mounting member 22 is locked to the first locking projection 56. As a result, the partition member main body 42 and the lid member 44 are not separated from each other in the vertical direction, and the partition member main body 42 and the lid member 44 are held in a superimposed state. Therefore, the partition member main body 42 and the lid member 44 are in a connected state in which the partition member 40 and the second mounting member 22 are locked and fixed by the first hooks 72 so as to overlap each other in the vertical direction. retained.

A flexible film 74 is attached to the partition member 40 . The flexible film 74 is a thin rubber film and has a substantially circular dome-shaped inner peripheral portion. An annular second seal rubber 76 is integrally formed on the outer peripheral side of the flexible film 74 . The second seal rubber 76 has a substantially disc shape and is thicker than the flexible film 74 .

The flexible film 74 is sandwiched between the partition member 40 and the holding member 78 by overlapping the second seal rubber 76 integrally formed on the outer peripheral portion of the partition member 40 with the lower surface of the partition member 40 , thereby and attached to the holding member 78 .

The holding member 78 is made of hard synthetic resin or metal, and has a frame shape as a whole, as shown in FIGS. 17 and 20 . The holding member 78 of the present embodiment is made of a synthetic resin material such as a fiber-reinforced resin material to reduce weight and improve flexibility in shape. In addition, the holding member 78 of the present embodiment has an outer peripheral surface that is approximately square and an inner peripheral surface that is approximately circular when viewed in the axial direction.

The holding member 78 is provided with a second locking piece 80 extending upward from the outer peripheral portion. The second locking piece 80 has a plate shape with an L-shaped cross section as a whole, extends from the outer peripheral surface of the holding member 78 , and protrudes above the holding member 78 . A locking claw portion 82 that projects toward the inner peripheral side of the holding member 78 is provided at the projecting tip portion of the second locking piece 80 . Also, two second locking pieces 80 are provided for each side portion of the holding member 78 having a rectangular outer shape when viewed in the axial direction.

The holding member 78 is superimposed on the partition member 40 from below, and the locking claw portion 82 of the second locking piece 80 of the holding member 78 is aligned with the second locking member of the partition member main body 42 of the partition member 40 . It is hooked on the locking surface 62 of the locking projection 60 of , and locked and fixed in the axial direction. As a result, the partition member 40 and the holding member 78 are connected to each other, and the partition member 40 and the holding member 78 are held together by the second locking protrusions 60 of the partition member 40 and the second locking pieces 80 of the holding member 78 . A second hooking portion 84 is configured for locking and fixing the . 16 to 19 show the partition member 40, the flexible membrane 74, and the holding member 78 as an assembly that is connected and fixed by the second hook portion 84. As shown in FIG.

In this embodiment, since a plurality of second locking projections 60 and a plurality of second locking pieces 80 are provided, a plurality of second hooking portions 84 are provided apart from each other in the circumferential direction. . Further, as shown in FIGS. 8 to 13, the first hooking portion 72 and the second hooking portion 84 are arranged at different positions in the circumferential direction. That is, as shown in FIGS. 10 and 11, the first hooking portion 72 is provided at a position outside the second hooking portions 84 provided on both front and rear sides in the left-right direction.

In the state where the holding member 78 is connected to the partition member 40, the holding member 78 and the partition member 40 sandwich the second seal rubber 76 integrally formed on the outer peripheral portion of the flexible film 74, and are mutually vertically aligned. superimposed. The second seal rubber 76 is compressed over the entire circumference in the locking direction (vertical direction) by the second hook portion 84 . That is, the partition member 40 and the holding member 78 are prevented from separating from each other by the reaction force of the compression of the second seal rubber 76 by the engagement of the second hook portion 84. The second seal rubber 76 is held in a compressed state by the locking of the second hooking portion 84 . As a result, the outer peripheral portion of the flexible film 74 is sandwiched between the partition member 40 and the holding member 78, and the overlapping surfaces of the partition member 40 and the holding member 78 are covered by the second seal rubber 76 over the entire circumference. fluid-tightly sealed.

Moreover, it is desirable that the partition member 40 and the holding member 78 are slightly separated from each other in the vertical direction to form a gap when they are locked and fixed to each other by the second hook portion 84 . As a result, the compressive force exerted on the second seal rubber 76 can be prevented from being reduced due to the contact between the partition member 40 and the holding member 78 .

In addition, the partition member 40 and the holding member 78 form a mutual positioning mechanism not only in the vertical direction, which is the overlapping direction, but also in the horizontal direction when they are locked and fixed to each other by the second hook portion 84. . That is, the lateral positioning action is exhibited between the partition member 40 and the holding member 78 by the contact action of the second locking piece 80 contacting the side surface of the partition member 40 .

In addition, in a state in which the second mounting member 22 of the integrally vulcanized molded product 18, the flexible film 74 and the holding member 78 are mounted to the partition member 40, the first mounting member 22 of the second mounting member 22 is mounted. The locking piece 34 and the second locking piece 80 of the holding member 78 are arranged at different positions in the circumferential direction. As a result, the engine mount 10 can be made smaller in the vertical direction than when the first locking piece 34 and the second locking piece 80 are arranged vertically.

As described above, the mount body 12 is configured by attaching the second attachment member 22 of the integrally vulcanized molded product 18 , the flexible film 74 and the holding member 78 to the partition member 40 . The mount body 12 has a pressure receiving chamber 86 as a first fluid chamber whose wall portion is partly composed of the main rubber elastic body 24 on the upper side with the partition member 40 interposed therebetween. On the lower side, there is provided an equilibrium chamber 88 as a second fluid chamber whose wall portion is partially composed of the flexible membrane 74 .

An incompressible fluid is enclosed in the pressure receiving chamber 86 and the equilibrium chamber 88, but the type of incompressible fluid to be enclosed is not particularly limited. Specifically, liquids such as water, ethylene glycol, alkylene glycol, polyalkylene glycol, silicone oil, or mixtures thereof are preferably employed.

One end of the tunnel-shaped flow path formed by the circumferential groove 50 provided in the partition member 40 communicates with the pressure receiving chamber 86 and the other end communicates with the equilibrium chamber 88 . As a result, an orifice passage 90 as a fluid flow passage that interconnects the pressure receiving chamber 86 and the equilibrium chamber 88 is formed extending in the circumferential direction along the outer peripheral portion of the partition member 40 . The tuning frequency of the orifice passage 90, which is the resonance frequency of the flowing fluid, is adjusted by the ratio A/L of the passage cross-sectional area A to the passage length L. frequency tuned.

In the inner peripheral portion of the partition member 40, a fluid flow path is formed through the first through hole 52 and the second through hole 64 of the partition member 40 and the accommodation recess 46, which mutually communicates the pressure receiving chamber 86 and the equilibrium chamber 88. A communication passage 92 is formed as a. The communicating path 92 is brought into a substantially communicating state by elastic deformation of the movable film 68 extending over the path, thereby allowing fluid flow.

1 to 7, the mount body 12 has an inner bracket 14 attached to a first attachment member 20 and an outer bracket 16 attached to a second attachment member 22. there is

The inner bracket 14 is made of metal, hard synthetic resin, or the like, and has a thick plate-like or rod-like shape. The inner bracket 14 of the present embodiment is made of a metal such as iron or an aluminum alloy to ensure a large rigidity against deformation. The inner bracket 14 has a connecting portion 94 that is connected and fixed to the first mounting member 20 , and an inner connecting bolt hole 96 that penetrates vertically is formed in the connecting portion 94 . The inner bracket 14 has a mounting portion 98 to be mounted to a power unit (not shown). there is

In the inner bracket 14 , the connecting portion 94 is superimposed on the upper surface of the first mounting member 20 of the mount body 12 , and the connecting bolt 102 inserted through the inner connecting bolt hole 96 is screwed into the screw hole 26 . By doing so, it is attached to the mount body 12 . When the inner bracket 14 is fixed to the first mounting member 20 , the mounting portion 98 of the inner bracket 14 protrudes forward with respect to the mount body 12 .

The outer bracket 16 is made of metal, hard synthetic resin, or the like, and has a substantially gate shape as a whole. The outer bracket 16 of the present embodiment is made of a synthetic resin material such as a fiber-reinforced resin material to reduce weight and improve flexibility in shape. The outer bracket 16 has a pair of side wall portions 104, 104 that are arranged facing each other in the left-right direction. The side wall portion 104 has a plate-like shape extending in the vertical direction, and mounting pieces 106 extending outward in the left-right direction are integrally formed at the lower end portion. there is Furthermore, the side wall portion 104 is formed with a fitting groove 110 that opens inward in the left-right direction and extends in the front-rear direction. In the fitting groove 110, the upper groove bottom surface is located laterally outside the lower groove bottom surface, and the upper portion having the upper groove side surface 112 is located laterally outside the lower portion having the lower groove side surface 114. ing.

Furthermore, a front wall portion 116 is integrally formed so as to straddle between the front end portions of the side wall portions 104 , 104 . As shown in FIGS. 2 and 7, the front wall portion 116 has a plate-like shape extending substantially perpendicularly to the front-rear direction, and is provided so as to block the space between the pair of side wall portions 104, 104 on the front side. An inner bracket insertion hole 118 is formed in the upper portion of the front wall portion 116 so as to penetrate therethrough in the front-rear direction.

Further, an upper wall portion 120 is integrally formed so as to straddle between the upper end portions of the side wall portions 104 , 104 . The upper wall portion 120 has a plate-like shape that extends substantially perpendicularly to the vertical direction, and both end portions in the left-right direction are integrally connected to the upper end portions of the pair of side wall portions 104 , 104 . In addition, the front end portion is integrally connected to the upper end portion of the front wall portion 116 . Further, the upper wall portion 120 is provided with a circular fastening hole 122 penetrating vertically. The outer bracket 16 of the present embodiment includes a bottom wall portion 124 that faces the top wall portion 120 with a space therebetween. In addition, part of the outer peripheral portion of the bottom wall portion 124 constitutes the lower groove side surface 114 of the fitting groove 110 .

The outer bracket 16 is attached to the mount body 12 . That is, the mount body 12 is inserted from behind into the region surrounded by the pair of side wall portions 104, 104, the top wall portion 120 and the bottom wall portion 124 of the outer bracket 16, and the second mounting member 22 and the holding member 78 are mounted. The outer bracket 16 is fixed to the mount body 12 by fitting the left and right ends of the outer bracket 16 into the fitting grooves 110 , 110 of the outer bracket 16 .

The mount body 12 is inseparably fixed to the outer bracket 16 by fitting the second mounting member 22 and the holding member 78 between both groove side surfaces 112 and 114 of the fitting grooves 110 and 110 . ing. In this embodiment, the fitting rubber layer 30 fixed to the second mounting member 22 is interposed between the second mounting member 22 and the upper sidewall surface and bottom surface of the fitting groove 110 . Therefore, the outer bracket 16 is stably attached to the mount body 12 without rattling due to dimensional errors of the parts.

By attaching the outer bracket 16 to the mount body 12 , the second mounting member 22 and the holding member 78 of the mount body 12 are positioned between the opposed surfaces of the upper groove side surface 112 and the lower groove side surface 114 of the fitting groove 110 . It is fitted in the vertical direction. As a result, the second mounting member 22 and the holding member 78 are pushed toward each other, and the first seal rubber 38 is more strongly sandwiched between the second mounting member 22 and the partition member 40, thereby The sealing performance between the second mounting member 22 and the partition member 40 is improved. In addition, since the second seal rubber 76 is more strongly sandwiched between the partition member 40 and the holding member 78, the sealing performance between the partition member 40 and the holding member 78 is improved.

In short, in a state in which the second mounting member 22 and the partition member 40 are connected by the first hook portion 72 and the partition member 40 and the holding member 78 are connected by the second hook portion 84, the partition member 40 and The space between the second mounting member 22 and the holding member 78 is temporarily sealed to such an extent that the enclosed incompressible fluid does not leak. By attaching the outer bracket 16 to the mount body 12 in the temporarily sealed state, vibration is input between the overlapping surfaces of the partition member 40, the second mounting member 22, and the holding member 78 in the vehicle-mounted state. This sealing state is a sealed state during use in which the incompressible fluid does not leak even when the valve is closed.

In the temporarily sealed state, the partition member 40 is positioned at an appropriate position in the vertical direction with respect to the second mounting member 22 and the holding member 78. Therefore, when the outer bracket 16 is attached to the mount body 12, this When shifting to the sealed state, the relative positions of the partition member 40 and the second mounting member 22 and the holding member 78 are unlikely to change significantly. Therefore, even in this sealed state, the sealing performance between the partition member 40 and the second mounting member 22 and the holding member 78 is stably ensured.

The engine mount 10 has a structure in which an inner bracket 14 and an outer bracket 16 are attached to a mount body 12. The inner bracket 14 is attached to a power unit (not shown), and the outer bracket 16 is attached to a vehicle body (not shown). Installed and used.

When a low-frequency vibration corresponding to engine shake is vertically input to the engine mount 10 mounted on the vehicle, relative pressure fluctuations occur between the pressure receiving chamber 86 and the equilibrium chamber 88 . A fluid flow is generated through the orifice passage 90 between the pressure receiving chamber 86 and the equilibrium chamber 88, and a vibration damping effect (high damping effect) is exhibited based on the flow action of the fluid.

When vibration corresponding to engine shake is input, the first and second through holes 52 and 64 are closed by the movable film 68 because the amplitude of the input vibration is large. As a result, the communication path 92 formed by the first and second through holes 52, 64 and the accommodation recess 46 is blocked by the movable film 68, and the fluid flow through the communication path 92 is restricted. , fluid flow through the orifice passage 90 is effectively produced.

Further, when medium to high-frequency small-amplitude vibrations corresponding to idling vibrations are input in the vertical direction, the movable film 68 is elastically deformed in the vertical direction within the housing recess 46, thereby transmitting hydraulic pressure to the communication path. 92 are in substantial communication. Based on the flow action of the fluid flowing through the communication passage 92 between the pressure receiving chamber 86 and the equilibrium chamber 88, the desired vibration damping effect (low dynamic spring effect) is exhibited.

Since the frequency of the idling vibration is higher than the tuning frequency of the orifice passage 90, the orifice passage 90 is substantially cut off due to anti-resonance when the idling vibration is input. As a result, the fluid flow through the orifice passage 90 is restricted, but the fluid flow through the communication passage 92 prevents the pressure receiving chamber 86 from being sealed, thereby reducing the dynamic spring.

By the way, the engine mount 10 according to this embodiment is manufactured, for example, as follows.

First, the main rubber elastic body 24 is vulcanized while the first mounting member 20 and the second mounting member 22 prepared in advance are set in a mold for molding the main rubber elastic body 24 . This completes the step of obtaining the integrally vulcanized molded product 18 of the main rubber elastic body 24 to which the first mounting member 20 and the second mounting member 22 are fixed.

After attaching the movable film 68 to the partition member main body 42 prepared in advance, the cover member 44 is superimposed on the upper side of the partition member main body 42 to complete the step of forming the partition member 40 . In this embodiment, the plurality of connecting pins 54 of the partition member main body 42 are inserted into the plurality of pin insertion holes 66 of the lid member 44, and the tip portions of the respective connecting pins 54 are deformed to expand the diameter of the partition member. The main body 42 and the lid member 44 are locked and fixed.

Also, the partition member 40 is superimposed on the integrally vulcanized molded product 18 from below, and the first locking pieces 34 of the second mounting member 22 are fitted to the first locking projections 56 of the partition member 40. It is locked and fixed in the vertical direction. As a result, the process of locking and fixing the second mounting member 22 and the partition member 40 by the first hooking portion 72 is completed, and the overlapping surfaces of the second mounting member 22 and the partition member 40 are temporarily sealed. and

In this embodiment, by bringing the second mounting member 22 and the partition member 40 close to each other in the vertical direction, the first locking piece 34 bends and climbs over the first locking projection 56, and then the first The first locking piece 34 is locked to the locking surface 58 of the first locking projection 56 by elastically restoring the original shape of the locking piece 34 . Therefore, the work of connecting the second mounting member 22 and the partition member 40 by locking and fixing the first hook portion 72 is easy, and the labor and time required for manufacturing can be reduced.

In addition, the second seal rubber 76 of the flexible film 74 prepared in advance is overlaid on the lower surface of the partition member 40, and the holding member 78 is overlaid on the partition member 40 from below, thereby The second locking piece 80 is locked and fixed to the second locking projection 60 of the partition member 40 in the vertical direction. As a result, the step of locking and fixing the partition member 40 and the holding member 78 by the second hooks 84 is completed, the flexible membrane 74 is attached to the partition member 40 and the holding member 78, and the partition member 40 and the holding member 78 are attached. A temporary seal state is established between the overlapping surfaces of the member 78 . As described above, the mount main body 12 can be obtained.

In this embodiment, by bringing the partition member 40 and the holding member 78 close to each other in the vertical direction, the second locking piece 80 bends and climbs over the second locking projection 60, and then the second locking is performed. As the piece 80 returns to its original shape due to elasticity, the locking claw portion 82 of the second locking piece 80 is locked to the locking surface 62 of the second locking projection 60 . Therefore, the work of connecting the partition member 40 and the holding member 78 by locking and fixing the second hooking portion 84 is easy, and the labor and time required for manufacturing can be reduced.

Further, in this embodiment, the steps of locking and fixing the second mounting member 22 and the partition member 40 by the first hooks 72 and locking and fixing the partition member 40 and the holding member 78 by the second hooks 84 are performed. and are performed in an incompressible fluid. As a result, when the second mounting member 22 and the holding member 78 are locked and fixed to the partition member 40 by the first hooking portion 72 and the second hooking portion 84, the incompressible fluid is sealed inside. be able to. Both of the above two steps may be performed in an incompressible fluid, but if the later of the two steps is performed in an incompressible fluid, the incompressible fluid can be encapsulated. can.

In this embodiment, as shown in FIG. 21, the partition member 40 and the holding member 78 are locked and fixed by the second hooks 84 to construct the assembly shown in FIGS. The first hook portion 72 locks and fixes the second mounting member 22 of the integrally vulcanized molded product 18 . Therefore, by performing the locking and fixing process by at least the first hooking portion 72 in the liquid, the filling operation of the incompressible fluid can be completed upon completion of the locking and fixing work.

It is also possible to inject the incompressible fluid later after the second mounting member 22 and the holding member 78 are attached to the partition member 40 in the atmosphere. Specifically, for example, a fluid injection hole may be formed in the first mounting member 20, and the incompressible fluid may be injected into the pressure receiving chamber 86 through the injection hole.

Next, the outer bracket 16 prepared in advance is attached to the mount main body 12 . That is, the mount body 12 is inserted from the rear side of the outer bracket 16 , and the left and right ends of the second mounting member 22 and the holding member 78 of the mount body 12 are inserted into the fitting grooves 110 , 110 of the outer bracket 16 . The outer bracket 16 is attached to the mount main body 12 by inserting the outer bracket 16 into the mount body 12 and fitting it vertically. By attaching the outer bracket 16 to the mount body 12, the second mounting member 22 and the holding member 78 are each pushed toward the partition member 40 so that the partition member 40, the second mounting member 22 and the holding member 78 are pushed together. A more highly sealed main seal state is achieved between the overlapping surfaces with the member 78 .

Next, the connecting portion 94 of the inner bracket 14 is inserted through the inner bracket insertion hole 118 of the outer bracket 16 , and the connecting portion 94 is superimposed on the upper surface of the first mounting member 20 . Then, the first mounting member 20 and the inner bracket 14 are bolt-fixed with the connecting bolts 102 through the fastening holes 122 provided in the upper wall portion 120 of the outer bracket 16 . As described above, the engine mount 10 in which the inner bracket 14 and the outer bracket 16 are attached to the mount body 12 is obtained.

According to the engine mount 10 constructed according to this embodiment, the partition member 40 and the second mounting member 22 are locked and fixed in the mount main body 12 by the first hooking portions 72, so that the partition is separated. A member 40 is axially positioned relative to the second mounting member 22 . As a result, the first seal rubber 38 is appropriately compressed between the partition member 40 and the second mounting member 22, so that sufficient sealing performance is exhibited when the mount body 12 alone is temporarily sealed, and the seal is sealed. Incompressible fluid can be prevented from leaking.

Furthermore, in the mount body 12, the partition member 40 and the holding member 78 are locked and fixed by the second hooks 84, so that the partition member 40 is arranged at an appropriate position in the axial direction with respect to the holding member 78. . As a result, since the second seal rubber 76 is appropriately compressed between the partition member 40 and the holding member 78, a sufficient sealing performance is exhibited when the mount body 12 alone is temporarily sealed, and the enclosed uncompressed Leakage of liquid can be prevented.

That is, in the conventional structure as described in Patent Document 1, the second mounting member and the holding member are simultaneously combined by being axially connected with the partition member sandwiched therebetween. It is difficult to precisely position the partition member between the mounting member and the holding member. Due to variations in the mounting position of the partition member, the seal structure set between the second mounting member and the partition member and the seal structure set between the partition member and the holding member are stable. In some cases, it was difficult to obtain a good sealing performance. On the other hand, in the engine mount 10 of the present embodiment, the second mounting member 22 and the partition member 40, and the partition member 40 and the holding member 78 are assembled by being directly engaged with each other. A more stable sealing performance can be obtained in

Also, the sealing performance between the partition member 40 and the second mounting member 22 and the sealing performance between the partition member 40 and the holding member 78 depend on the compression force exerted on the first seal rubber 38 by the first hook portion 72 . The force and the compressive force exerted on the second seal rubber 76 by the second hook 84 are set independently of each other. Therefore, the performance of each seal structure should be appropriately set according to the difference in characteristics between the first seal rubber 38 and the second seal rubber 76, the difference in internal pressure acting on the pressure receiving chamber 86 and the equilibrium chamber 88, and the like. can be done.

In the engine mount 10 of this embodiment, the first rubber elastic body is the main body rubber elastic body 24 that receives the load, while the second rubber elastic body is the flexible film 74. The materials of the first rubber elastic body and the second rubber elastic body, ie, the materials of the first seal rubber 38 and the second seal rubber 76, may be different depending on the required characteristics. Also, the sizes and shapes of the seal rubbers 38 and 76 may be different from each other. Therefore, in the conventional assembly structure as described in Patent Document 1, since the compressive forces acting on both seal rubbers are equal, the first seal rubber integrally formed with the first rubber elastic body and the second seal rubber In some cases, it is difficult to obtain equally effective sealing performance between the rubber elastic body and the second seal rubber integrally formed. On the other hand, in the engine mount 10 of the present embodiment, each seal rubber 38, 76 can be applied with a separately set compression force or compression amount. Therefore, in each of the first and second seal rubbers 38 and 76, it is possible to stably obtain the intended sealing performance.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited by the specific descriptions. For example, the number and arrangement of the first and second locking pieces and the first and second locking portions are not particularly limited. Also, the first locking piece may be provided on the partition member, and the first locking portion may be provided on the second mounting member. Similarly, the second locking piece may be provided on the partition member and the second locking portion may be provided on the holding member.

Further, the facing surfaces of the second mounting member 22 and the partition member 40 which sandwich the first seal rubber 38 do not necessarily have to face each other in parallel, and may be relatively inclined. Similarly, the facing surfaces of the partition member 40 and the holding member 78 that sandwich the second seal rubber 76 may be relatively inclined. Therefore, the facing surfaces thereof are not limited to surfaces extending perpendicularly to the direction in which the first and second hooks 72 and 84 are engaged and fixed (the vertical direction in the above embodiment). It may be slanted and widened. Further, the opposing surface sandwiching the first seal rubber 38 and the opposing surface sandwiching the second seal rubber 76 may be, for example, flat, curved, or uneven. .

Further, the fluid flow path is not limited to a structure including both the orifice passage 90 and the communication passage 92 formed by the movable film 68 as in the above-described embodiment. may be configured. Furthermore, the movable body provided in the communication path 92 is not limited to the movable film 68 partially restrained by the partition member 40. For example, the movable body can move vertically in the housing recess 46 without being restrained by the partition member 40. It may be a movable plate that is arranged in a floating state so that it can move to the

Furthermore, when no movable body is arranged inside, the partition member is not limited to a structure in which a plurality of divided structures are combined. Moreover, the partition member can also be configured by combining three or more split structures. Furthermore, when the partition member is composed of a plurality of divided structures, the plurality of divided structures are positioned relative to each other when the partition member is locked and fixed to the second mounting member 22 and the holding member 78. The fixing structure by the connecting pin 54 and the pin insertion hole 66 shown in the above embodiment is not essential.

Moreover, the second rubber elastic body may be fixed to the holding member 78 in advance, and may be formed as an integrally vulcanized molded product provided with the holding member 78 . Furthermore, the second rubber elastic body may be a thick rubber elastic body, and the second fluid chamber may be a pressure receiving chamber.

For example, in a state where the mount body 12 is fitted to the outer bracket 16, a fail-safe (removal prevention structure) that prevents the mount body 12 from coming off from the outer bracket 16 is provided, such as by providing a retaining member that closes the opening on the rear side of the outer bracket 16. ) may be provided.

Which of the step of locking and fixing the second mounting member 22 and the partition member 40 by the first hook portion 72 and the step of locking and fixing the partition member 40 and the holding member 78 by the second hook portion 84 comes first? You can go to Specifically, for example, after the integrally vulcanized molded product 18 of the main rubber elastic body 24 is attached to the partition member 40 by the first hooking portion 72 , the second hooking portion 84 attaches the partition member 40 to the flexible part. Membrane 74 and retaining member 78 may be attached.

10: Engine mount (fluid-filled anti-vibration device), 12: Mount body, 16: Outer bracket (bracket), 18: Integrated vulcanization molding, 20: First mounting member, 22: Second mounting member, 24: main rubber elastic body (first rubber elastic body), 34: first locking piece (locking piece), 38: first seal rubber, 40: partition member, 42: partition member body (divided structure ), 44: lid member (divided structure), 56: first locking projection (locking portion), 58: locking surface, 60: second locking projection (locking portion), 62: locking Surface 68: Movable film (movable body) 72: First hooking portion 74: Flexible film (second rubber elastic body) 76: Second seal rubber 78: Holding member 80: Second locking piece (locking piece), 84: second hooking portion, 86: pressure receiving chamber (first fluid chamber), 88: equilibrium chamber (second fluid chamber), 90: orifice passage (fluid flow path ), 92: communication path (fluid flow path), 110: fitting groove, 112: upper groove side surface (groove side surface), 114: lower groove side surface (groove side surface)

Claims (5)

The first mounting member and the second mounting member are elastically connected by a first rubber elastic body, and the first rubber elastic member is provided on both sides of the partition member supported by the second mounting member. A first fluid chamber whose wall portion is partially composed of a body and a second fluid chamber whose wall portion is partially composed of a second rubber elastic body are formed. In a fluid-filled vibration damping device in which a chamber and a second fluid chamber are communicated with each other through a flow passage formed by the partition member,
The outer peripheral portion of the partition member is superimposed on the second mounting member with a first seal rubber integrally formed with the first rubber elastic body interposed therebetween, and is located on the outer peripheral side of the first seal rubber. While the partition member and the second mounting member are locked and fixed by the provided first hook,
A holding member for holding the outer peripheral portion of the second rubber elastic body is superimposed on the outer peripheral portion of the partition member with a second seal rubber integrally formed on the outer peripheral portion of the second rubber elastic body sandwiched therebetween. At the same time, the partition member and the holding member are locked and fixed by a second hook portion provided on the outer peripheral side of the second seal rubber ,
Each of the first hooking portion and the second hooking portion is composed of a flexible locking piece and a locking portion having a locking surface on which the locking piece is hooked,
The first hooking portion is in a hooked state by superimposing the partition member on the second mounting member in the vertical direction of the mount, and
A fluid-filled vibration damping device in which the second hooking portion is in a hooked state by superimposing the holding member on the partition member in the vertical direction of the mount . A bracket having a fitting groove into which the second mounting member is inserted from the side is provided. 2. The fluid-filled vibration isolator according to claim 1, wherein the partition member is interposed between the partition members. 3. The fluid filled type vibration damping device according to claim 1, wherein a plurality of said first hooks and said second hooks are provided at different positions in the circumferential direction of said partition member. 1-, wherein the partition member is composed of a plurality of divided structures divided in the overlapping direction with respect to the second mounting member, and a movable body is incorporated between the overlapping surfaces of the divided structures. 4. The fluid-filled vibration isolator according to any one of 3 . The first mounting member and the second mounting member are elastically connected by a first rubber elastic body, and the first rubber elastic member is provided on both sides of the partition member supported by the second mounting member. A first fluid chamber whose wall portion is partially composed of a body and a second fluid chamber whose wall portion is partially composed of a second rubber elastic body are formed. When manufacturing a fluid-filled vibration damping device in which the chamber and the second fluid chamber are communicated with each other through the flow channel formed by the partition member,
obtaining an integrally vulcanized product of the first rubber elastic body to which the first mounting member and the second mounting member are fixed;
The outer peripheral portion of the partition member is superimposed on the second mounting member with the first seal rubber integrally formed with the first rubber elastic body interposed therebetween, and is provided on the outer peripheral side of the first seal rubber. locking and fixing the partition member and the second mounting member by means of the first hook;
a holding member for holding the outer peripheral portion of the second rubber elastic body is superposed on the outer peripheral portion of the partition member with a second seal rubber integrally formed on the outer peripheral portion of the second rubber elastic body sandwiched therebetween; locking and fixing the partition member and the holding member with a second hook provided on the outer peripheral side of the second seal rubber ,
Both the first hook portion and the second hook portion are composed of a flexible locking piece and a locking portion having a locking surface on which the locking piece is hooked,
The first hooking portion is brought into a hooking state by superimposing the partition member on the second mounting member in the vertical direction of the mount, and
The second hooking portion is brought into a hooking state by superimposing the holding member on the partition member in the vertical direction of the mount.
A method for manufacturing a fluid-filled vibration isolator.

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