JPH04262142A - Fluid sealing type mount device and its manufacture - Google Patents

Abstract

PURPOSE:To simplify mount assembling operation and improve workability with need for assembling a relatively large size fitting in fluid eliminated, by sealing a fluid chamber with a metal ring, appendantly provided on the outer peripheral edge part of a rubber elastic body, fabricated to a connecting fitting. CONSTITUTION:A metal ring 36 is integratedly provided appendantly on the outer peripheral edge part of a rubber elastic film 30, assembled to the other side opening part in an axis direction to block the opening part, to a tubular connecting fitting 16 in which one side opening part in the axis direction is linked to a first bracket 10 via a rubber elastic body 24. Also the metal ring 36 is inserted in the opening part of the connecting fitting 16, a sealing rubber layer 38 is nippedly pressed in a diameter direction between the metal ring 36 and the opening part, allowing blocking the other side opening part in the axis direction in the connecting fitting 16. Moreover the outer peripheral part of the rubber elastic film 30, including the metal ring 36, together with a second bracket 32 is caukedly fixed to the axis direction end part of the connecting fitting 16. That is, fluid chambers 44 and 46 are sealed by assembling the metal ring 36 to the connecting fitting 16.

Description

[Detailed description of the invention]

0001

TECHNICAL FIELD The present invention relates to a fluid-filled mounting device with an improved structure, which facilitates and simplifies the assembly work of the mounting device, and to a method for manufacturing the same. .

0002

BACKGROUND ART Conventionally, as a type of mount device that is interposed between members constituting a vibration transmission system and connects the two members in a vibration-proof manner, there is a mount device as disclosed in Japanese Patent Laid-Open No. 57-9340. , a first mounting bracket attached to one member to be vibration-proof connected, and one axial direction of a cylindrical connecting bracket disposed at a predetermined distance from the first mounting bracket in the vibration input direction. is elastically connected to the opening by a rubber elastic body interposed between them, and the other opening in the axial direction of the connecting fitting is fluid-tightly covered by a rubber elastic membrane, so that the inside thereof is While forming a fluid chamber filled with a predetermined incompressible fluid, a second member is attached to the other member to be vibration-proof connected to the axial end of the connecting fitting to which the rubber elastic membrane is attached. 2. Description of the Related Art A so-called fluid-filled mounting device is known, which has a structure in which a mounting bracket is fixed by caulking. In such a fluid-filled mount device, the fluid chamber is partitioned into a plurality of fluid chambers that communicate with each other through an orifice passage, and the fluid flow between the fluid chambers is controlled. A predetermined vibration damping effect can be achieved based on the resonance effect.

By the way, in such a fluid-filled mounting device, in order to ensure liquid-tightness of the fluid chamber, a high degree of sealing performance is required for the attachment portion of the rubber elastic membrane to the opening of the connecting fitting. It will be required. Therefore, in the past, generally, as shown in the above publication,
By holding the outer periphery of the rubber elastic membrane under pressure at the caulking portion of the second mounting bracket to the opening of the connecting bracket, the opening of the connecting bracket is covered with the rubber elastic membrane in a fluid-tight manner. A similar structure is adopted.

[0004] In addition, in a mounting device having such a structure, a vulcanized molded product in which the first mounting fitting and the connecting fitting are integrally connected by the rubber elastic body is usually attached to the fluid chamber. By immersing the rubber elastic membrane and the second fitting in the fluid to be enclosed in the fluid, assembling the rubber elastic membrane and the second fitting in the fluid, and caulking the connecting fitting.
As a result, the fluid chamber is filled with fluid.

However, in such a fluid-filled mounting device having a conventional structure, not only the operation of assembling the rubber elastic membrane to the connecting fitting but also the operation of assembling the second fitting is performed in the fluid. As a result, the mount assembly work was troublesome, and in particular, the second mounting bracket is often large, making it difficult to assemble it in a fluid. It was.

Moreover, if the second mounting bracket is assembled to the connecting bracket in a fluid, the fluid will penetrate into the second mounting bracket, so it is difficult to remove the assembly from the fluid. There was also the problem that the fluid that had entered the second fitting had to be drained afterwards.

[0007] In addition, the first and second mounting brackets usually have directional properties due to their mounting position and mounting structure with respect to the members to be connected for vibration isolation. As mentioned above, when assembling the second mounting bracket to the vulcanized product, the direction must be taken into account, and the assembly work is difficult due to the fact that the work is done in fluid. This made it extremely difficult to automate the assembly process, as the assembly process was extremely difficult to perform and the orientation had to be adjusted manually each time.

[0008]

[Problem to be solved] Here, the present invention has been made against the background of the above-mentioned circumstances, and the problem to be solved is to assemble the second fitting to the connecting fitting outside of the fluid. To provide a fluid-filled mounting device with an improved structure, which can effectively facilitate assembly work in fluid, and can advantageously automate the assembly work, and a method for manufacturing the same. It is in.

[0009]

[Solution] In order to solve this problem, the present invention provides a first mounting bracket attached to one member to be vibration-proof connected, and a vibration-proofing device for the first mounting bracket. Elastically connecting one opening in the axial direction of a cylindrical connecting fitting arranged at a predetermined distance in the input direction by a rubber elastic body interposed therebetween;
The other opening in the axial direction of the connecting fitting is covered fluid-tightly with a rubber elastic membrane, and inside the connecting fitting,
A fluid chamber in which a predetermined incompressible fluid is sealed is formed of a pressure receiving chamber on the rubber elastic body side and an equilibrium chamber on the rubber elastic membrane side, which are communicated with each other, and is covered with the rubber elastic membrane. In the fluid-filled mounting device, a second mounting fitting to be attached to the other member to be vibration-proofly connected is caulked and fixed to the axial end of the connecting fitting, in which the outer periphery of the rubber elastic membrane is fixed. By integrally providing a metal ring in the part, inserting the metal ring into the other opening in the axial direction of the connecting fitting, and compressing the seal rubber layer in the radial direction between the metal ring and the connecting fitting. , the opening of the connecting fitting is closed, and the outer peripheral portion of the rubber elastic membrane including the metal ring is caulked and fixed to the axial end of the connecting fitting together with the second mounting fitting. Fluid-filled mounting device,
This is its characteristic.

[0010] The present invention also provides a first mounting bracket attached to one of the members to be vibration-proof connected, and a cylinder arranged at a predetermined distance from the first mounting bracket in the vibration input direction. One opening in the axial direction of the connecting fitting is elastically connected by a rubber elastic body interposed between them, and the other opening in the axial direction of the connecting fitting is made fluid-tight by a rubber elastic membrane. a fluid chamber in which a predetermined incompressible fluid is sealed, the fluid chamber comprising a pressure receiving chamber on the rubber elastic body side and an equilibrium chamber on the rubber elastic membrane side, which are communicated with each other, and , and a second fitting attached to the other member to be vibration-proofly connected is caulked and fixed to the axial end of the connecting fitting covered with the rubber elastic membrane. A method for manufacturing an enclosed mounting device, comprising: (a) a vulcanized molded product in which the first mounting fitting and one opening in the axial direction of the connecting fitting are connected by the rubber elastic body; (b) preparing the rubber elastic membrane having a metal ring integrally provided on its outer peripheral portion; and (c) preparing the rubber elastic membrane in which the metal ring is integrally provided in the fluid chamber. The outer circumferential portion of the rubber elastic membrane provided with is inserted into the other opening in the axial direction of the connecting fitting in the vulcanized molded product, and the seal rubber disposed between the metal ring and the connecting fitting is inserted. obtaining an assembled body in which the fluid chamber is formed by compressing the layers;
(d) Taking out the assembled body from the fluid, and caulking and fixing the second fitting to the other opening in the axial direction of the connecting fitting in the assembled body outside the fluid; The method of manufacturing a fluid-filled mounting device includes the step of caulking and fixing the outer circumferential portion of the rubber elastic membrane including the metal ring to the axial end of the connecting fitting together with the second mounting fitting. That is.

[0011]

EXAMPLES In order to clarify the present invention more specifically, examples of the present invention will be described in detail below with reference to the drawings.

First, FIG. 1 shows a specific example of an automobile engine mount having a structure according to the present invention. In this figure, 10 is a first mounting bracket,
It has a flat plate shape. Further, a mounting bolt 12 that protrudes outward is fixed to the first mounting fitting 10, and a substantially hollow truncated conical working fitting 14 is provided on the opposite side of the mounting bolt 12. is fixed. This first mounting bracket 10 is adapted to be mounted on the power unit side of an automobile (not shown) using a mounting bolt 12. As is clear from the figure, the first mounting bracket 10 has an asymmetrical shape with respect to the mounting bolt 12, and is formed with directionality according to the shape of the mounting portion on the power unit side.

[0013] Further, a connecting fitting 16 having a generally cylindrical shape as a whole is disposed on the operating fitting 14 side of the first mounting fitting 10, and a connecting fitting 16 having an approximately cylindrical shape as a whole is disposed on one opening side in the axial direction. It is positioned opposite to the mounting bracket 10 with a predetermined distance therebetween. The connecting fitting 16 has an opening on the first mounting fitting 10 side.
A diameter-enlarging portion 18 that gradually increases in diameter is formed, and the working metal fitting 1
The outer peripheral surface of 4 is opposed to the outer peripheral surface of Further, the other axial opening of the connecting fitting 16 is formed with a stepped portion 20 that extends outward in the axially perpendicular direction in a predetermined width in the shape of an outer flange. At the outer periphery,
A caulking portion 22 is integrally formed.

The first mounting fitting 10 and the connecting fitting 16 are elastically connected by a rubber elastic body 24 interposed between their opposing parts. That is, the rubber elastic body 24 is formed in a generally truncated conical shape as a whole, and the first mounting bracket 10 is connected to the small diameter end surface of the rubber elastic body 24, and the first mounting bracket 10 is connected to the outer circumferential surface of the large diameter end surface thereof. The expanded diameter portions 18 of the metal fittings 16 are vulcanized and bonded to each other, thereby integrally connecting the two metal fittings 10 and 16. Further, as a result, the opening of the connecting fitting 16 on the side of the enlarged diameter portion 18 is closed by the rubber elastic body 24, thereby forming a space 26 in the connecting fitting 16 that opens toward one end in the axial direction. has been done.

Further, in the opening of this space 26, a partition member 28 having an approximately hat shape as a whole and a diaphragm 30 as a rubber elastic membrane having a thin disk shape are installed.
At each outer peripheral portion, the stepped portion 2 of the connecting fitting 16
It is arranged in a state where it is superimposed on 0. Furthermore, on the stepped portion 20 of the connecting fitting 16, a second mounting fitting 32 having a substantially shallow cylindrical shape is attached to the partition member at an outer flange portion 34 formed at the peripheral edge of the opening. 28 and the outer peripheral portions of the diaphragm 30, and are fixed by caulking with the caulking portion 22 of the connecting fitting 16. That is, by this caulking fixation, the connecting fitting 16
The second mounting bracket 32 is fixed to the
The outer peripheral portions of the partition member 28 and the diaphragm 30 are held between the caulking portions of the connecting fitting 16 and the second mounting fitting 32.

[0016]The diaphragm 30 has an annular metal ring 36 at its outer peripheral edge.
is vulcanized and bonded, and the diaphragm 30 is assembled into the opening of the connecting fitting 16 by inserting this metal ring 36 into the caulking portion 22 of the connecting fitting 16. Further, a thin seal rubber layer 38 is formed on the inner circumferential surface of the caulking portion 22 of the connecting fitting 16, and when the diaphragm 30 is assembled, this seal rubber layer 38 is formed between the metal ring 36 and the caulking portion 22. By being compressed in the radial direction, sealing performance at the assembly site is ensured, and the opening of the cavity 26 is fluid-tightly closed by the diaphragm 30. And this diaphragm 3
The cavity 26 sealed at 0 is filled with an incompressible fluid such as water, alkylene glycol, polyalkylene glycol, silicone oil, or a mixture thereof, so that the cavity 26 becomes a fluid chamber. It is structured as follows.

The partition member 28 disposed within the space 26 has a structure in which upper and lower partition fittings 40 and 42, each having a substantially hat shape, are overlapped with each other, and the space 26 ( The inside of the fluid chamber is partitioned on both sides in the axial direction. As a result, a pressure receiving chamber 44 is formed on the side of the first mounting bracket 10 with the partition member 28 in between, the wall portion of which is partially composed of the rubber elastic body 24 and in which internal pressure fluctuations are caused when vibration is input. On the other hand, on the second mounting bracket 32 side, a balance chamber 46 is formed in which a portion of the wall portion is constituted by the diaphragm 30 and whose volume is easily allowed to change.

Furthermore, the partition member 28 has an orifice passage extending circumferentially between the upper and lower partition fittings 40 and 42 and communicating the pressure receiving chamber 44 and the equilibrium chamber 46 with each other at a portion located on the outer periphery of the fluid chamber. 48 is formed through which fluid can flow between the chambers 44, 46. In addition, a through hole is provided in the center of the partition member 28 and is closed with a rubber elastic plate 50. Based on the deformation of the rubber elastic plate 50, a gap is formed between the pressure receiving chamber 44 and the equilibrium chamber 46. The flow of fluid through the through hole is allowed, and the amount of fluid flowing through the through hole is restricted based on the elastic force of the rubber elastic plate 50. .

On the other hand, in the second mounting fitting 32, the outer flange portion 34 is caulked and fixed by the caulking portion 22 of the connecting fitting 16, so that the partition member 28
The outer peripheral portion of the diaphragm 30 is fixedly held against the connecting fitting 16. Furthermore,
The second mounting bracket 32 has a mounting bolt 52 projecting outward at the center of the bottom, and is adapted to be mounted on the vehicle body side using the mounting bolt 52.

[0020] A positioning protrusion 54 projecting outward is provided at the bottom of the second mounting bracket 32, so that the mounting direction with respect to the vehicle body is defined. That is, the second mounting fitting 32 has a predetermined directionality with respect to the first mounting fitting 10, and the connecting fitting 1
It is caulked and fixed to 6.

In the fluid-filled mounting device having such a structure, when vibration is input between the first mounting bracket 10 and the second mounting bracket 32, the pressure receiving chamber 44 and Based on the relative internal pressure fluctuation caused between the equilibrium chamber 46 and the equilibrium chamber 46, the fluid flow through the orifice passage 48 and the fluid flow due to the deformation of the rubber elastic plate 50 occur between the two chambers 44 and 46. It will be brought to life. When low-frequency, large-amplitude vibrations such as shakes are input, a high damping effect is exhibited based on the resonance effect of the fluid flowing in the orifice passage 48, while when high-frequency, small-amplitude vibrations such as muffled sounds are input. The low dynamic spring effect can be achieved based on the fact that fluid pressure fluctuations in the pressure receiving chamber 44 are absorbed by the fluid flow effect accompanying the deformation of the rubber elastic plate 50.

[0022] Hereinafter, a detailed explanation will be given of a method of manufacturing the fluid-filled mount device having the above-described structure. That is, when manufacturing such a fluid-filled mounting device, first, the rubber elastic body 24 is placed in a mold in which the first mounting fitting 10 and the connecting fitting 16 are arranged.
By molding and applying a vulcanization operation, an integrally vulcanized molded product 56 having a cavity 26 inside as shown in FIG. 2 is obtained. In this integrally vulcanized molded product 56, the caulking portion 22 of the connecting fitting 16 is formed in a tapered cylindrical shape whose diameter slightly expands outward in the axial direction, and the inner circumferential surface of the caulking portion 22 is A thin sealing rubber layer 38 extending over the entire circumference is integrally formed with the rubber elastic body 24.

[0023] Furthermore, in a separate process from this integrally vulcanized molded product 56, a partition member 28 and a diaphragm 30 as shown in FIG. 2 are formed. As described above, this partition member 28 includes upper and lower partition fittings 40 and 42, each having a substantially hat shape, stacked on top of each other in the axial direction, and a rubber elastic plate 50 fixed thereto so as to close a through hole formed in the center. It will be formed by On the other hand,
The diaphragm 30 is made of a rubber material and has a thin disc shape, and a metal ring 36 is vulcanized and bonded to the outer peripheral edge of the diaphragm 30.

Then, the integrally vulcanized molded product 56 is immersed in a fluid to be sealed in a fluid chamber, and the integrally vulcanized molded product 5 is immersed in the fluid as shown in FIG.
6, the partition member 28 and the diaphragm 30 are sequentially inserted into the caulking portion 22 of the connecting fitting 16, and the outer peripheral portions of the partition member 28 and the diaphragm 30 are
The connecting fittings 16 are arranged so as to overlap each other on the stepped portion 20. Next, by subjecting the caulking portion 22 of the connecting fitting 16 to an eight-way drawing process in a fluid, the inner circumferential surface thereof is shaped like a metal ring disposed on the outer circumferential edge of the diaphragm 30, as shown in FIG. 36. That is, by this eight-way drawing process, the seal rubber layer 38 provided on the inner circumferential surface of the caulking part 22 is compressed between the metal ring 36 and the caulking part 22, thereby ensuring fluid tightness between them. As a result, the openings of the cavities 26 in the integrally vulcanized molded product 56 are fluid-tightly closed by the diaphragm 30, and a fluid is sealed in each of the cavities 26. Thus, a pressure receiving chamber 44 and an equilibrium chamber 46 are formed.

[0025] When inserting the diaphragm 30 into such an integrally vulcanized product 56, or after inserting the diaphragm 30, and before sealing the fluid by drawing the caulked portion 22 in all directions, the diaphragm 30 may be inserted into a blank space as necessary. The amount of fluid sealed in the fluid chambers (pressure receiving chamber 44 and equilibrium chamber 46) can be adjusted by pressing and bending the chamber 26 to discharge a predetermined amount of fluid from the cavity 26.

Further, as described above, after the partition member 28 and the diaphragm 30 are assembled to the integrally vulcanized molded product 56 in the fluid, the assembled body is removed from the fluid and the assembled body is removed from the fluid. A separately formed second mounting bracket 32 is then assembled. To assemble the second fitting 32, as shown in FIG. By overlapping the partition member 28 and the outside of the outer peripheral portion of the diaphragm 30 which are superimposed on the stepped portion 20 of the metal fitting 16, and then caulking the caulking portion 22 of the connecting metal fitting 16,
As a result, the desired engine mount as shown in FIG. 1 is obtained. In addition, when assembling the second mounting bracket 32 to the integrally vulcanized molded product 56, the second mounting bracket 3
The fixation is performed by caulking while taking into account the relative directionality of the mounting bracket 2 to the first mounting bracket 10.

By caulking and fixing the second fitting 32 to the connecting fitting 16 in this manner, the outer peripheral portions of the partition member 28 and the diaphragm 30 are connected to the stepped portion 20 of the connecting fitting 16. It is held between the outer flange portion 34 of the mounting fitting 32 and fixedly held with respect to the connecting fitting 16.

Therefore, according to the method described above, when sealing fluid into the fluid chambers (pressure receiving chamber 44 and equilibrium chamber 46), the metal ring 36 provided on the outer peripheral edge of the diaphragm 30 and the connecting fitting 16 are connected. By compressing the seal rubber layer 38 with the caulked portion 22, the liquid tightness of the fluid chamber can be ensured, so the assembly operation of the second mounting bracket 32 can be performed outside the fluid. It is.

Therefore, there is no need to immerse the second fitting 32, which is a relatively large metal fitting, in the fluid to assemble it, and moreover, it is possible to completely prevent the fluid from entering the second fitting 32. Since the mount assembly operation can be avoided and the liquid draining operation after assembly becomes unnecessary, the mount assembly operation can be simplified and work efficiency can be extremely advantageously achieved.

Furthermore, according to such a mount assembly method, when assembling the second mounting bracket 32, the orientation with respect to the first mounting bracket 10 can be performed outside the fluid. The work of assembling the mounting bracket 32, that is, the work of sealing the fluid into the fluid chamber, becomes easier, and since there is no need to consider the direction of the assembly members in the fluid, the work of assembling in the fluid is also easier. It can be simplified, and therefore, it becomes easy to automate the assembly work in fluid.

Furthermore, in this embodiment, the caulking portion 22 of the connecting fitting 16 into which the metal ring 36 provided on the outer peripheral edge of the diaphragm 30 is inserted is formed in a tapered cylindrical shape. in fluid,
The insertion operation of the metal ring 36 into the caulked portion 22 is performed by
This can be done more easily.

Next, FIG. 6 shows another embodiment of an engine mount constructed according to the present invention. In addition, in the engine mount of this embodiment, for the members and parts having the same structure as the first embodiment,
By assigning the same reference numerals to each, detailed explanation thereof will be omitted.

That is, in the engine mount according to the first embodiment, the caulking portion 22 for caulking and fixing the second mounting fitting 32 to the connecting metal fitting 16 is
Although the engine mount in this embodiment has a caulking portion 58 for caulking and fixing the second attachment fitting 32 to the connection fitting 16, the engine mount according to this embodiment
is integrally formed on the outer peripheral edge of the outer flange portion 34 on the second mounting fitting 32 side.

[0034] A cylindrical fitting part 60 protruding outward in the axial direction is attached to the outer peripheral edge of the stepped part 20 of the second mounting bracket 32, and a metal fitting part 60 is provided on the outer peripheral edge of the diaphragm 30. The metal ring 36 and the fitting part 60 are formed to have a height that allows the ring 36 to be inserted therein.
By compressing the seal rubber layer 38 between
Liquid-tightness of the fluid chambers (pressure receiving chamber 44 and equilibrium chamber 46) can be ensured.

Therefore, even in the engine mount of this embodiment, the fluid tightness of the fluid chamber can be ensured by assembling the diaphragm 30 to the connecting fitting 16, and the assembly of the second mounting fitting 32 The operation can be performed outside the fluid, and thereby the same effects as in the first embodiment can be effectively exhibited.

It should be noted that the engine mount having the structure of this embodiment is manufactured in accordance with the engine mount assembly method shown in the first embodiment and through the same process. Assembly process diagrams corresponding to FIGS. 2 to 5 in one embodiment are shown in FIGS. 7 to 10, and detailed explanation thereof will be omitted here.

Although the embodiments of the present invention have been described in detail above, these are literal illustrations, and the present invention is not to be construed as being limited only to these specific examples.

For example, in the above embodiment, the diaphragm 3
Metal ring 36 provided on the outer peripheral edge of 0 and connecting fitting 1
A sealing rubber layer 38 which is sandwiched between the metal ring 6 and the sealing member 6 to seal the gap therebetween was integrally provided on the side of the connecting fitting 16, but instead of or in addition to the sealing rubber layer 38, a metal ring It is also possible to form a seal rubber layer on the 36 side, or to form a seal rubber layer separately from both the metal ring 36 and the connecting fitting 16.

Furthermore, the mounting structure of the metal ring (36) to the diaphragm 30 is not limited to vulcanization adhesion, and various known mounting structures may be employed as long as sufficient fluid tightness can be ensured. For example, Figure 11
As shown in FIG. 3, upper and lower rings 62 and 64 are assembled to the outer peripheral edge of the diaphragm 30 from both sides in the axial direction, and are fitted into each other while compressing the diaphragm 30. It is also possible to configure

Furthermore, in the above embodiment, the metal ring 3
The caulking part 22 (fitting part 6
0) was formed with a tapered shape whose diameter expands outward, but the caulked portion 22 (fitting portion 60) does not necessarily need to be tapered. However, in the case where the caulking portion 22 (fitting portion 60) is not tapered, the seal rubber layer fixed to the caulking portion 22 (fitting portion 60) is required to ensure press-fitting workability of the metal ring 36. The inner peripheral surface of the metal ring 38 is tapered, the outer peripheral surface of the metal ring 36 is reversely tapered, or the caulked part 22 (fitting part 60) is formed with an inner diameter larger than that of the metal ring 36 by a predetermined dimension. It is desirable to take measures such as increasing the aperture ratio.

Furthermore, in the above embodiment, the metal ring 36
After inserting into the connecting fitting 16, by drawing the caulking part 22 (fitting part 60) of the connecting fitting 16,
The sealing rubber layer 38 is compressed between the metal ring 36 and the caulking part 22 (fitting part 60), but in addition, for example, The formed seal rubber layer 38 is tapered,
If this is utilized, the seal rubber layer 38 is sandwiched between the metal ring 36 and the caulking portion 22 (fitting portion 60) by press-fitting the metal ring 36 into the caulking portion 22 (fitting portion 60). It is also possible to ensure the sealing performance by pressing, thereby making it unnecessary to draw in all directions in a fluid.

Furthermore, in the embodiment described above, a specific example was shown in which the present invention is applied to a mounting device that has relative directionality between the first and second mounting brackets 10 and 32. It goes without saying that the present invention can be advantageously applied to a mounting device in which there is no relative directionality between the two mounting fittings.

Furthermore, the specific structure of the fluid chamber including the orifice passage is not to be construed as being limited by the above embodiments, but may be designed as appropriate depending on the vibration isolation characteristics required of the mounting device. Changes should be made.

In addition, in the above embodiment, a specific example of the application of the present invention to an automobile engine mount was shown, but the present invention can also be applied to an automobile body mount, a differential mount, or a vehicle other than an automobile. It can also be advantageously applied to anti-vibration mounts in various devices.

[0045] In addition, various changes, modifications, improvements, etc. may be made to the present invention based on the knowledge of those skilled in the art, although they will not be listed one by one. It goes without saying that all of these are included within the scope of the present invention as long as they do not deviate from the spirit of the above.

[0046]

As is clear from the above description, according to the present invention, when a fluid is sealed into a fluid chamber, the metal ring provided on the outer peripheral edge of the rubber elastic membrane is assembled to the connecting fitting. Since the fluid chamber can be sealed in a fluid-tight manner, there is no need to assemble the second fitting, which is a relatively large fitting, in the fluid, and the fluid can completely enter into the second fitting. This eliminates the need for draining liquid after assembly, making it possible to simplify the mount assembly operation and improve workability extremely effectively.

Furthermore, according to the present invention, it is possible to assemble the second fitting outside the fluid, and the assembling work in the fluid can be effectively simplified.
It also becomes easier to automate assembly work in fluid.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing a specific example of an automobile engine mount having a structure according to the present invention.

FIG. 2 is an explanatory longitudinal cross-sectional view for explaining one manufacturing process of the engine mount shown in FIG. 1;

FIG. 3 is an explanatory longitudinal cross-sectional view for explaining one manufacturing process of the engine mount shown in FIG. 1;

4 is an explanatory longitudinal cross-sectional view for explaining one manufacturing process of the engine mount shown in FIG. 1. FIG.

5 is an explanatory longitudinal cross-sectional view for explaining one manufacturing process of the engine mount shown in FIG. 1. FIG.

FIG. 6 is a longitudinal sectional view corresponding to FIG. 1, showing another specific example of an automobile engine mount having a structure according to the present invention.

7 is an explanatory longitudinal cross-sectional view corresponding to FIG. 2 for explaining one manufacturing process of the engine mount shown in FIG. 6;

8 is an explanatory longitudinal cross-sectional view corresponding to FIG. 3 for explaining one manufacturing process of the engine mount shown in FIG. 6;

9 is an explanatory longitudinal cross-sectional view corresponding to FIG. 4 for explaining one manufacturing process of the engine mount shown in FIG. 6;

10 is a vertical cross-sectional explanatory view corresponding to FIG. 5 for explaining one manufacturing process of the engine mount shown in FIG. 6;

11 is an explanatory cross-sectional view of a main part showing another specific example of a structure for attaching a metal ring to a diaphragm, which can be suitably employed in the engine mount shown in FIGS. 1 and 6. FIG.

[Explanation of symbols]

10: First mounting bracket
16: Connecting metal fittings 22: Caulking part
24: Rubber elastic body 28: Partition member
30: Diaphragm 32: Second mounting bracket
36: Metal ring 38: Seal rubber layer
44: Pressure receiving chamber 46: Equilibrium chamber
48: Orifice passage 56: Integrally vulcanized molded product
58: Caulking part 60: Fitting part

Claims (2)

[Claims] Claim 1: A first mounting bracket attached to one member to be vibration-isolated and connected; and a cylindrical connecting bracket disposed at a predetermined distance from the first mounting bracket in the vibration input direction. and one opening in the axial direction by a rubber elastic body interposed between them, and
The other opening in the axial direction of the connecting fitting is covered fluid-tightly with a rubber elastic membrane, and inside the connecting fitting,
A fluid chamber in which a predetermined incompressible fluid is sealed is formed of a pressure receiving chamber on the rubber elastic body side and an equilibrium chamber on the rubber elastic membrane side, which are communicated with each other, and is covered with the rubber elastic membrane. In the fluid-filled mounting device, a second mounting fitting to be attached to the other member to be vibration-proofly connected is caulked and fixed to the axial end of the connecting fitting, in which the outer periphery of the rubber elastic membrane is fixed. By integrally providing a metal ring in the part, inserting the metal ring into the other opening in the axial direction of the connecting fitting, and compressing the seal rubber layer in the radial direction between the metal ring and the connecting fitting. , the opening of the connecting fitting is closed, and the outer peripheral portion of the rubber elastic membrane including the metal ring is caulked and fixed to the axial end of the connecting fitting together with the second mounting fitting. Fluid-filled mounting device. 2. A first mounting bracket attached to one of the members to be vibration-isolated and connected, and a cylindrical connecting bracket disposed at a predetermined distance from the first mounting bracket in the vibration input direction. and one opening in the axial direction by a rubber elastic body interposed between them, and
The other opening in the axial direction of the connecting fitting is covered fluid-tightly with a rubber elastic membrane, and inside the connecting fitting,
A fluid chamber in which a predetermined incompressible fluid is sealed is formed of a pressure receiving chamber on the rubber elastic body side and an equilibrium chamber on the rubber elastic membrane side, which are communicated with each other, and is covered with the rubber elastic membrane. A method for manufacturing a fluid-filled mounting device comprising: caulking and fixing a second fitting to be attached to the other member to be vibration-proof connected to the axial end of the connecting fitting, the method comprising: a step of preparing a vulcanized molded product in which the first mounting fitting and one opening in the axial direction of the connecting fitting are connected by the rubber elastic body; and a step of integrally providing a metal ring on the outer peripheral portion. a step of preparing the rubber elastic membrane, which comprises a step of preparing the rubber elastic membrane in the fluid to be sealed in the fluid chamber; The assembled body in which the fluid chamber is formed is inserted into the opening in the other direction and compressed by the metal ring and the connecting fitting to compress the sealing rubber layer disposed between them. and a step of taking out the assembled body from the fluid and caulking and fixing the second fitting to the other opening in the axial direction of the connecting fitting in the assembled body outside the fluid, manufacturing a fluid-filled mounting device comprising the step of caulking and fixing the outer circumferential portion of the rubber elastic membrane including the metal ring to the axial end of the connecting fitting together with the second mounting fitting. Method.