JPH0828623A - Fluid sealing type mount device and its manufacture - Google Patents

Abstract

PURPOSE:To easily enable manufacture by dispensing with a troublesome caulking process and the like in liquid. CONSTITUTION:A first installation fitting 12 is fixed to a small diameter end, while a cylindrical second installation fitting 14 is fixed to an outer peripheral surface of a large diameter end. A bottomed cylindrical cover fitting 17 is press-fitted and fixed to a truncated conical rubber elastic body which has a recession opened to the large diameter end surface. An outer peripheral edge of a closing member 24 composing a fluid chamber 18 by covering the opening of the recession 44 and an outer peripheral edge of a partition member 20 arranged inside the fluid chamber 18 dividing the chamber into a pressure receiving chamber 22 and a balance chamber 26 are superposed on each other, and held in a wandwiching manner between the bottom of the cover fitting 17 and an axial end of the second installation fitting 14.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid-filled mount device suitable for use in an automobile engine mount or the like, which is designed to obtain a vibration damping effect based on the flow action of a fluid enclosed therein, and a manufacturing method thereof. It is about.

[0002]

2. Description of the Related Art Conventionally, as a type of a mount device such as an engine mount for an automobile or a body mount, which is interposed between members constituting a vibration transmission system and vibration-proofly connects both members, a conventional flat mount 2- As disclosed in Japanese Patent No. 41742, etc., a first mounting member is attached to a small-diameter side end portion of a substantially frustoconical rubber elastic body, and a cylindrical second mounting member is attached to a large-diameter side end portion outer peripheral surface thereof. , Each of which is fixed and forms a recess opening to the side of the second mounting member, and the opening of the recess is covered with a closing member at least a part of which is formed of a flexible film to cover the inside. By forming a fluid chamber in which a predetermined incompressible fluid is enclosed, and by arranging a partition member in the fluid chamber, the fluid chamber is pressure-received with a part of the wall portion made of a rubber elastic body. The chamber and part of the wall were made of flexible membrane With bisecting to the 衡室, fluid-filled mount of comprising brought an orifice passage communicating with each other equilibrium chamber with pressure receiving chamber structure is known. In such a mounting device, the fluid flow through the orifice passage is generated based on the relative internal pressure difference generated between the pressure receiving chamber and the equilibrium chamber at the time of vibration input. A predetermined vibration damping effect can be exhibited based on the flow action such as the resonance action of the fluid flowing in the passage.

By the way, in such a fluid-filled mount device as described above, in order to sufficiently secure the liquid-tightness of the fluid chamber, a high degree of sealing is provided with respect to an assembly portion such as a closing member to the opening of the recess. Sex will be required. Therefore, conventionally, as described in the above publication, an outer flange-shaped step portion is provided at the opening side end of the recess in the second mounting member, and the shaft is further extended from the outer peripheral edge portion of the step portion. While using a cylindrical caulking portion extending in the direction, a bottomed cylindrical lid fitting having an annular support portion extending outward from the peripheral edge of the opening is used, and the annular support portion of the lid fitting is connected to the second mounting fitting. By overlapping the stepped portion, sandwiching the outer peripheral edge of the closing member or the partition member between the annular support portion and the stepped portion, and crimping and fixing the crimped portion of the second mounting bracket to the annular support portion of the lid bracket. A structure in which the outer peripheral edge portions of the closing member and the partition member are clamped and held is preferably adopted.

However, in such a structure, since the step or the caulking portion has to be formed in the second mounting member, the shape of the second mounting member is complicated and the manufacturing is troublesome. In addition to this, and in addition to that, in order to fill the fluid chamber with an incompressible fluid, since the assembly of the lid fitting to the second fitting is generally performed in the fluid, It requires caulking inside,
There was also a problem that the assembly work was extremely difficult.

[0005]

The present invention has been made in view of the circumstances as described above, and a problem to be solved by the present invention is that a caulking portion having a complicated shape is formed on a second mounting member. A fluid-filled mount device having an improved structure, which does not need to be formed, and which does not require caulking in a fluid and can advantageously achieve simplification of structure and improvement of manufacturability, and the like. It is to provide a manufacturing method.

[0006]

In order to solve such a problem, a feature of the present invention resides in that a first attachment fitting is provided at a small-diameter side end portion of a substantially frustoconical rubber elastic body, and a large-diameter side end portion outer circumference. A cylindrical second mounting member is fixed to each surface, and a recess opening to the side of the second mounting member is formed. At least a part of the opening of the recess is formed by a flexible film. The fluid chamber is covered with the constituted closing member to form a fluid chamber in which a predetermined incompressible fluid is sealed, and by disposing a partition member in the fluid chamber,
A pressure receiving chamber in which a part of the wall portion is formed of the rubber elastic body,
A fluid-filled mount device in which a part of the wall portion is divided into an equilibrium chamber formed of the flexible film and an orifice passage that connects the pressure receiving chamber and the equilibrium chamber to each other is formed. A bottom cylindrical lid fitting is press-fitted and fixed to an outer peripheral surface of the second mounting fitting, and the closing member is provided between a bottom wall portion of the lid fitting and an axial end portion of the second mounting fitting. And the outer peripheral edge portion of the partition member is held with a clamping force.

Further, in a preferred embodiment of the fluid-filled mount device according to the present invention, a pressure release passage which is shut off by completion of press-fitting is provided at a press-fitting portion between the second mounting metal fitting and the lid metal fitting.

Furthermore, in a preferred embodiment of the fluid-filled mount device according to the present invention, the axial end of the second mounting member on the opening side of the recess is bent inward in the radial direction, and An annular holding portion that holds the outer peripheral edge portions of the closing member and the partition member by holding pressure is formed between the lid member and the bottom wall portion.

In a preferred embodiment of the fluid-filled mount device according to the present invention, an annular step portion is provided on the bottom wall portion of the lid fitting, and the central portion of the bottom wall portion is deeper than the outer peripheral portion. The outer peripheral portion of the bottom wall portion serves as a bottom, and the outer peripheral edge portions of the closing member and the partition member are clamped and held with the axial end portion of the second mounting member.

Further, in a preferred embodiment of the fluid-filled mount device according to the present invention, the bottom wall portion of the lid fitting for holding the outer peripheral edge portions of the closing member and the partition member under pressure and the second mounting. A seal member is interposed between the metal fitting and the axial end portion of the metal fitting.

Further, according to the present invention, (a) the first attachment fitting is vulcanized and bonded to the end portion of the small diameter side of the rubber elastic body having a substantially truncated cone shape, and A step of preparing an integrally vulcanized molded product having a concave opening that opens to the side of the second mounting member, in which a cylindrical second mounting member is vulcanized and bonded to the outer peripheral surface of the part; By being arranged in the opening of the recess in the integrally vulcanized molded product, the opening is covered to define a fluid chamber in which a predetermined incompressible fluid is sealed, at least a part of which is flexible. A step of preparing a closing member composed of a flexible film, and (c) a part of the wall portions which are arranged in the fluid chamber and partition the fluid chamber so that they are communicated with each other through an orifice passage. The pressure receiving chamber made of rubber elastic body and a part of the wall portion are made of the flexible film of the closing member. A step of preparing a partition member that forms the formed equilibrium chamber, and (d) press-fitting and fixing a bottomed cylindrical lid fitting to the outer peripheral surface of the second mounting fitting in the predetermined incompressible fluid. At least, by sandwiching and holding the outer peripheral edge portions of the closing member and the partition member between the bottom wall portion of the lid fitting and the axial end portion of the second mounting fitting by sandwiching them, The method for manufacturing a fluid-filled mount device is also characterized by including a step of assembling and fixing the closing member and the partition member to the opening of the recess in the second mounting member.

In a preferred embodiment of the method for manufacturing a fluid-filled mount device according to the present invention as described above, a fitting is fixed to the outer peripheral portion of the closing member, and the fitting is attached to the lid in the atmosphere. After press-fitting and fixing to the inner peripheral surface of the metal fitting to form a closed space between the lid metal fitting and the closing member, the lid metal fitting is fixed to the second mounting metal fitting in the predetermined incompressible fluid. It will be press-fitted and fixed to the outer peripheral surface.

[0013]

In other words, in the fluid-filled mount device having the structure according to the present invention, the closing member and the partition member can be assembled only by press fitting the lid fitting into the second mounting fitting. There is no need to provide a caulking part on the mounting bracket, the shape of the second mounting bracket can be simplified and manufacturing is easy, and troublesome caulking is not required, and mount assembly workability is dramatically improved. To get.

Further, in such a fluid-filled mount device, since the lid fitting is press-fitted onto the outer peripheral surface of the second fitting to be overlapped with each other, the second fitting is reinforced by the lid fitting. Therefore, it is possible to improve the manufacturability and cost efficiency by making the second mounting member thin.

Furthermore, if the cover fitting covers substantially the entire outer peripheral surface of the second mounting member, the outer peripheral surface of the second mounting member need not be subjected to corrosion-resistant coating or the like.
There is also an advantage that manufacturing workability and cost efficiency can be further improved.

Further, if a pressure release passage that is shut off by the completion of the press-fitting is provided in the press-fitting portion of the second mounting member and the lid member, the inside of the fluid chamber when the fluid is sealed by the press-fitting operation in the incompressible fluid is provided. Pressure rise can be avoided,
The vibration isolation performance can be stabilized.

Furthermore, by forming an annular holding portion on the second mounting member, the holding pressure of the closing member and the partitioning member with the lid member can be more advantageously held.

Further, if an annular step portion is provided on the bottom wall portion of the lid member and the central portion is deeper than the outer peripheral portion of the bottom wall that holds the closing member and the partition member under pressure, the deep portion is obtained. In the central portion of the bottom wall of the lid fitting, a space that allows the deformation of the flexible film forming the closing member can be advantageously formed.

Furthermore, if the seal member is pressed between the bottom wall portion of the lid fitting and the axial end portion of the second mounting fitting, the fluid tightness of the fluid chamber has a simple structure. It can be advantageously secured.

Further, according to the method of the present invention, a troublesome caulking process in a fluid becomes unnecessary, and the partition member and the closing member for the integrally vulcanized molded product can be obtained by press-fitting the lid fitting into the second mounting fitting. Since the assembly is performed to form the fluid chamber, mount manufacturability can be dramatically improved.

At this time, before the press-fitting to the second mounting member, the closing member is press-fitted and fixed to the lid member so that a closed space is formed between the closing member and the lid member. In this case, the volume of the closed space that allows the deformation of the flexible film forming the closing member can be advantageously ensured, and the flexible film swells outward when the incompressible fluid is filled, and the fluid filling amount becomes excessive. This can be avoided, and it becomes possible to advantageously and stably manufacture a mount device having a desired anti-vibration effect.

[0022]

EXAMPLES Examples of the present invention will now be described in detail with reference to the drawings in order to clarify the present invention more specifically.

FIG. 1 shows an automobile engine mount 10 as an embodiment of the present invention. The engine mount 10 has a structure in which a first mounting member 12 and a second mounting member 14 arranged at a predetermined distance from each other are elastically connected by a rubber elastic body 16. By mounting either one of the one mounting bracket 12 and the second mounting bracket 14 on the power unit side and the other on the body side, the power unit can be supported in a vibration-proof manner with respect to the body. A lid fitting 17 is assembled to the second mounting fitting 14, and the second mounting fitting 1 is attached via the lid fitting 17.
4 is attached to the power unit side or the body side.

Further, a fluid chamber 18 in which a predetermined incompressible fluid is sealed is formed inside the engine mount 10, and the fluid chamber 18 is divided into two parts by a partition fitting 20 to form a wall. A part of the portion is constituted by the rubber elastic body 16, and internal pressure fluctuation is generated based on elastic deformation of the rubber elastic body 16 at the time of inputting vibration, and a part of the wall portion serves as a flexible film. An equilibrium chamber 26 which is constituted by the diaphragm 24 and whose volume change is easily allowed based on the deformation of the diaphragm 24 is formed, and an orifice passage 28 which communicates the pressure receiving chamber 22 and the equilibrium chamber 26 with each other is formed. It is provided. Then, at the time of vibration input, a fluid flow is generated between the pressure receiving chamber 22 and the equilibrium chamber 26 through the orifice passage 28, and based on the flow action of the fluid, a damping effect on shake vibration and an insulating effect on idling vibration are generated. That is, a predetermined anti-vibration effect such as is exhibited.

Further, details of the engine mount 10 of this embodiment will be described according to the manufacturing process thereof.

That is, in manufacturing the engine mount 10, first, the integrally vulcanized molded product 30 as shown in FIG. 2, the partition metal fitting 20 as shown in FIGS. 3 and 4, and FIG. The diaphragm 24 as shown in FIG. 5 and FIG. 6 and the lid fitting 17 as shown in FIG. 7 are manufactured and prepared, respectively.

Here, as shown in FIG. 2, the integrally vulcanized molded product 30 has a structure in which the first and second mounting members 12 and 14 are vulcanized and bonded to the rubber elastic body 16. have. The rubber elastic body 16 has a substantially frustoconical shape, and the disc-shaped first mounting member 1 is provided on the end face on the small diameter side thereof.
While 2 is vulcanized and bonded, a substantially cylindrical second mounting member 14 is vulcanized and bonded to the outer peripheral surface of the large-diameter side end.

The first mounting member 12 is provided with a mounting bolt 32 fixedly projecting outward at the central portion, and can be mounted on the power unit side or the vehicle body side by this mounting bolt 32. Along with
A positioning protrusion 34 is provided adjacent to the mounting bolt 32.

On the other hand, the second mounting member 14 is provided with an outer flange portion 36 that spreads outwards at the peripheral edge of one axial opening located on the first mounting member 12 side. A peripheral edge portion of the other opening in the axial direction is bent inward to form an annular holding portion 38. The outer flange portion 36 is further outwardly protruded by a predetermined width in the circumferential direction, and the cushioning rubber 40 is fixed to the surface thereof. A stopper portion 42 for limiting the relative displacement amount of the metal fitting 12 and the second mounting metal fitting 14 is formed.

Further, the rubber elastic body 16 has a recess 4 which is open to the end surface on the large diameter side where the second mounting member 14 is vulcanized and adhered.
4 is provided, and the opening end of the recess 44 is
The orifice groove 46 is formed by cutting out in a step shape with a length of less than one circumference in the circumferential direction. Further, a seal lip 48 is formed on the inner surface of the recess 44 so as to extend continuously along the entire circumference in the circumferential direction along the orifice groove 46.

On the other hand, as shown in FIGS. 3 and 4, the partition fitting 20 has a substantially hat shape as a whole, and has a shallow bottom inverted cup-shaped portion 50 and a small collar portion 52.
It consists of Then, in the inverted cup-shaped portion 50,
The outer peripheral edge portion is recessed inward at one place on the circumference to form a recessed portion 54, and a communication hole 56 penetrating the peripheral wall portion inward and outward is adjacent to the recessed portion 54 in the circumferential direction. It is provided to fit.

As shown in FIGS. 5 and 6, the diaphragm 24 is formed of a thin rubber film having a substantially dome shape that is easily elastically deformed, and has a cylindrical shape at its outer peripheral edge. A fixing metal fitting 62 having a substantially L-shaped cross section, which is composed of the plate-shaped portion 58 and the annular plate-shaped portion 60, is vulcanized and bonded. Further, an annular seal rubber 64 that projects to one side in the axial direction is provided on the outer peripheral edge portion of the annular plate-shaped portion 60 of the fixing fitting 62.

Further, as shown in FIG. 7, the lid member 17 has a substantially bottomed cylindrical shape as a whole, and its opening peripheral edge portion is slightly curved outward. Further, the peripheral wall portion 66 of the lid member 17 has an inner diameter dimension slightly smaller than the outer diameter dimension of the second mounting member 14, and one or more of them are provided near the bottom portion of the peripheral wall portion 66. A plurality of depressurization holes 68 are pierced therethrough. Furthermore,
An annular step portion 70 is provided in the radial middle portion of the bottom wall portion of the lid member 17, and a stepped bottom wall in which the bottom wall central portion 74 is deeper than the bottom wall outer peripheral portion 72. It is considered a division. Further, mounting bolts 76, 76 projecting outward are fixed to the bottom wall central portion 74, and these mounting bolts 76, 76 are mounted on the vehicle body side or the power unit side. Note that the lid fitting 1
The surface of 7 will be subjected to rust prevention treatment by cationic coating or the like, if necessary.

The desired engine mount 10 is manufactured by combining the integrally vulcanized molded product 30, the partition metal fitting 20, the diaphragm 24 and the lid metal fitting 17, which are respectively formed with the above-mentioned structures, with each other.

Specifically, first, in the atmosphere, the diaphragm 24 is inserted into the lid fitting 17, and the cylindrical portion 58 of the fixing fitting 62 fixed to the diaphragm 24 is fixed to the step portion 70 of the lid fitting 17. Press-fit and assemble (see Fig. 8). As a result, the opening of the central portion 74 of the bottom wall of the lid fitting 17 is covered by the diaphragm 24 to form the air chamber 78 that allows the deformation of the diaphragm 24, and the annular plate-shaped portion 60 of the fixing fitting 62 is removed. It will be superposed on the outer peripheral portion 72 of the bottom wall of the lid member 17.

Next, the partition fitting 20 is inserted into the inside of the lid fitting 17, and the flange portion 52 thereof is superposed on the annular plate-like portion 60 of the fixing fitting 62 fixed to the diaphragm 24, whereby the partition fitting 20 is fixed. , The diaphragm 24 is positioned so as to cover it.

Then, as shown in FIG. 8, a combination of the lid fitting 17, the diaphragm 24 and the partition fitting 20 is dipped in a predetermined incompressible fluid 80,
The part other than the air chamber 78 is guided and filled with the non-compressible fluid 80, while the integrally vulcanized molded article 30 is also immersed in the non-compressible fluid 78 to fill the recess 44 and the orifice groove 46 with the non-compressible fluid 80. Fill 80.

Then, in the incompressible fluid 80, the peripheral wall portion 66 of the lid member 17 is press-fitted and assembled to the outer peripheral surface of the second mounting member 14 of the integrally vulcanized molded product 30. The lid fitting 1 for the second mounting fitting 14
As the press-fitting of 7 progresses, the internal volume between the metal fittings 14 and 17 decreases, but the incompressible fluid corresponding to the volume decrease is discharged through the pressure release hole 68 provided in the lid metal fitting 17. Therefore, it is possible to prevent the internal pressure from increasing as the volume decreases. Further, the incompressible fluid is prevented from easily entering the air chamber 78 formed in the bottom portion of the lid fitting 17, whereby the diaphragm when the lid fitting 17 is press-fitted into the second mounting fitting 14. The bulging deformation of 24 toward the air chamber 78 side and the accompanying filling of an incompressible fluid in an amount larger than necessary are prevented.

By the press-fitting operation of the lid fitting 17 into the second fitting 14 as described above, as shown in FIG. 1, the sandwiching portion 38 of the second fitting 14 causes the outer periphery of the bottom wall of the lid fitting 17 to move. The annular plate-shaped portion 60 of the fixing metal fitting 62 fixed to the diaphragm 24 and the partition metal fitting 2 are overlapped with the portion 72 and thus between the sandwiching portion 38 and the bottom wall outer peripheral portion 72.
The zero collar portion 52 is overlapped in the axial direction so as to be sandwiched and held, and is fixedly supported by the second mounting member 14. Further, the seal rubber 64 provided on the outer peripheral edge portion of the fixing metal fitting 62 is pinched between the holding portion 38 of the second mounting metal fitting 14 and the bottom wall outer peripheral portion 72 of the lid metal fitting 17, and thereby these The space is fluid-tightly sealed. As a result, the pressure release hole 68 of the lid member 17 is substantially blocked, and the sealed fluid chamber 18 is formed between the rubber elastic body 16 and the diaphragm 24.

Further, as the lid fitting 17 is press-fitted into the second mounting fitting 14, the reverse cup-shaped portion 50 of the partition fitting 20 is fitted into the opening of the recess 44 of the integrally vulcanized molded product 30. As a result, the fluid chamber 18 becomes the partition fitting 2
A pressure receiving chamber 22 into which the vibration is input and a balance chamber 26 having a variable volume are defined. Also, the partition fitting 20
Is fitted into the opening of the recess 44 to cover the orifice fissure groove 46. When the partition fitting 20 is fitted into the recess 44, the adjacent portion of the recess 54 formed in the partition fitting 20 and the communication hole 56 has a circumferentially discontinuous portion (orifice groove 54) in the orifice groove 54. Are positioned relative to each other so that they are located in the area where the () is not formed). As a result, the orifice passage extends in the circumferential direction for a little less than one round, one end of which communicates with the pressure receiving chamber 22 through the recess 54, while the other end communicates with the equilibrium chamber 26 through the communication hole 56. 28 is formed.

Further, particularly in the present embodiment, the axial length of the peripheral wall portion 66 of the lid fitting 17 is substantially the same as the axial length of the second mounting fitting 14, and the lid fitting 17 is the second By being press-fitted into the mounting member 14, substantially the entire outer peripheral surface of the second mounting member 14 is covered by the peripheral wall portion 66 of the lid member 17.

That is, the engine mount 1 as described above.
In the case of 0, the partition fitting 20 and the diaphragm 24 are pressed by pressing the lid fitting 17 into the second mounting fitting 14.
The pressure receiving chamber 22 and the equilibrium chamber 26 that are assembled and sealed
Since it is possible to form, it is not necessary to provide a caulking portion or the like for the lid metal fitting 17 or the second mounting metal fitting 14, and the manufacturing is easy, and the troublesome caulking process is unnecessary, and the mount assembling workability is improved. It can be dramatically improved.

Further, in the engine mount 10, the lid fitting 17 is superposed on the outer peripheral surface of the second mounting fitting 14, and particularly, in the present embodiment, substantially the entire second mounting fitting 14 is provided. Since the lid fittings 17 are overlapped, the second fitting 14 can be advantageously reinforced by the lid fitting 17 to exhibit excellent strength and durability, and to the outer peripheral surface of the second fitting 14. There is also an advantage that rust prevention treatment is not required and the workability and cost can be further improved.

The embodiments of the present invention have been described in detail above, but these are literal examples and the present invention should not be construed as being limited to such specific examples.

For example, in the above embodiment, the lid fitting 17 is
Although it was formed with a length that covers the entire length of the second mounting member 14 in the axial direction, the axial length of the lid member 17 is set to be larger than that of the second mounting member 14 if the fixing force by press fitting is sufficiently obtained. You can shorten it.

Further, the structure of the partition member is not limited to that of the above-mentioned embodiment, and one having a plurality of orifice passages inside or a minute internal pressure of the pressure receiving chamber due to displacement or deformation. Various well-known structures can be adopted, such as a structure provided with a hydraulic pressure absorption mechanism that absorbs fluctuations and relieves a remarkable increase in dynamic spring when high-frequency vibration is input.

Further, the structure of the closing member is not limited to that of the above-mentioned embodiment, and a single diaphragm or the like having no fixing metal member fixed to the outer peripheral edge can be adopted.

Further, the structure of the lid member 17 is not limited to that of the above-mentioned embodiment, and it has a simple cylindrical shape with a bottom having no stepped portion on the bottom wall or a bracket on the outer peripheral surface. It is also possible to employ the one in which the diaphragm 24 is integrally provided, or the one in which the through hole is provided in the center of the bottom wall portion to expose the diaphragm 24 to the external space.

Further, in the above embodiment, the diaphragm 24
Although the seal rubber 64 is provided on the fixing metal fitting 62 fixed to, the seal rubber can be formed on the second mounting metal fitting 14 side of the integrally vulcanized molded product 30.

Furthermore, the pressure release hole 68 in the lid fitting 17
Instead of the above, a groove extending in the axial direction may be formed on the inner peripheral surface of the lid member 17 or the outer peripheral surface of the second mounting member 14, and the excess fluid may be discharged to the outside through the groove.

Further, the partition fitting 20 for the lid fitting 17
The diaphragm 24 and the diaphragm 24 are assembled in a fluid, and a through hole is provided in the bottom wall portion of the lid member 17 before or after the assembly, and the incompressible fluid 80 entering the air chamber 78 through the through hole. May be discharged.

Further, the pressure relief passage such as the pressure relief hole 68 does not necessarily have to be provided. That is, in the case where the press-fitting margin is small, the internal pressure rise in the fluid chamber is not a problem, and if the partition member or the closing member is assembled to the integrally vulcanized molded product in the fluid, the lid fitting is press-fitted. , There is no problem that the internal pressure of the fluid pressure rises due to the press-fitting operation, and at that time, the excess incompressible fluid due to the decrease in the volume inside the lid fitting due to the press-fitting is provided with a discharge hole in the lid fitting, etc. Can be easily discharged by.

In addition, in the above-mentioned embodiment, a specific example of the present invention applied to an automobile engine mount is shown. However, the present invention can be used for other vehicle body mounts and various devices other than automobiles. It goes without saying that any of them can be advantageously applied to the fluid-filled mount device.

Although not listed one by one, the present invention
Based on the knowledge of those skilled in the art, it can be implemented in various modified, modified, and improved modes, and
It goes without saying that all such embodiments are included within the scope of the present invention, without departing from the spirit of the present invention.

[Brief description of drawings]

FIG. 1 is an explanatory longitudinal sectional view showing an engine mount as one embodiment of the present invention, showing a cross section corresponding to a IV-IV section in FIG.

FIG. 2 is a vertical cross-sectional view showing an integrally vulcanized molded product that constitutes the engine mount shown in FIG.

3 is a plan view showing a partition fitting that constitutes the engine mount shown in FIG. 1. FIG.

4 is a sectional view taken along line IV-IV in FIG.

5 is a plan view showing a diaphragm constituting the engine mount shown in FIG. 1. FIG.

6 is a sectional view taken along line VI-VI in FIG.

7 is a vertical cross-sectional view showing a lid fitting that constitutes the engine mount shown in FIG.

8 is an explanatory diagram for explaining one manufacturing process of the engine mount shown in FIG. 1. FIG.

[Explanation of symbols]

 10 Engine Mount 12 First Mounting Metal Fitting 14 Second Mounting Metal Fitting 16 Rubber Elastic Body 17 Lid Metal Fitting 18 Fluid Chamber 20 Partition Metal Fitting 22 Pressure Receiving Chamber 24 Diaphragm 26 Balance Room 28 Orifice Passage 30 Integral Vulcanized Product 80 Incompressible Fluid

Claims (7)

[Claims] 1. A first mounting member is fixed to a small-diameter side end of a substantially frustoconical rubber elastic body, and a cylindrical second mounting member is fixed to an outer peripheral surface of a large-diameter side end of the rubber elastic body. A recess opening to the side of the second mounting member is formed, and the opening of the recess is covered with a closing member at least a part of which is made of a flexible film, and a predetermined incompressible fluid is provided inside. While forming a fluid chamber in which is enclosed, a partition member is disposed in the fluid chamber to form a pressure chamber having a wall portion partially formed of the rubber elastic body, and a wall portion. A part of is divided into an equilibrium chamber composed of the flexible membrane, and
In a fluid-filled mount device in which an orifice passage that connects the pressure receiving chamber and the equilibrium chamber to each other is formed, a bottomed cylindrical lid fitting is press-fitted and fixed to the outer peripheral surface of the second mounting fitting, A fluid-filled mount device characterized in that an outer peripheral edge portion of the closing member and the partition member is clamped and held between a bottom wall portion of the lid fitting and an axial end portion of the second mounting fitting. . 2. The fluid-filled mount device according to claim 1, wherein a pressurization passage that is shut off when press-fitting is completed is provided at a press-fitting portion between the second mounting bracket and the lid bracket. 3. An axial end of the second mounting member on the opening side of the recess is bent inward in the radial direction, and the closing member and the partition are formed between the second mounting member and a bottom wall of the lid member. The fluid-filled mount device according to claim 1 or 2, wherein an annular holding portion that holds the outer peripheral edge portion of the member by holding pressure is formed. 4. An annular step portion is provided on a bottom wall portion of the lid fitting, a central portion of the bottom wall portion is deeper than an outer peripheral portion, and the outer peripheral portion of the bottom wall portion is provided. ,
The fluid-filled mount according to claim 1, wherein outer peripheral edge portions of the closing member and the partition member are clamped and held between the outer peripheral edge portions of the closing member and the axial end portion of the second mounting member. apparatus. 5. A seal member is interposed between a bottom wall portion of the lid fitting for holding the outer peripheral edge portions of the closing member and the partition member under pressure and an axial end portion of the second mounting fitting. The fluid-filled mount device according to claim 1, wherein the mount device is a fluid-filled mount device. 6. A rubber elastic body having a substantially frustoconical shape, to which a first mounting member is vulcanized and bonded at its small diameter side end portion, and a cylindrical second end portion is provided on the outer peripheral surface of the large diameter side end portion. A step of preparing an integrally vulcanized molded article having a recess opening to the side of the second mounting metal, wherein the mounting metal fitting is vulcanized and bonded; and an opening of the recess in the integrally vulcanized molded article. A step of preparing a closing member, at least a part of which is formed of a flexible film, which is provided to cover the opening and define a fluid chamber in which a predetermined incompressible fluid is enclosed. And disposed in the fluid chamber and partitioning the fluid chamber so that they are communicated with each other through an orifice passage,
A pressure receiving chamber in which a part of the wall portion is formed of the rubber elastic body,
A step of preparing a partition member that forms an equilibrium chamber in which a part of the wall portion is formed of the flexible film of the closing member; and a bottomed cylindrical lid fitting in the predetermined incompressible fluid. Is press-fitted and fixed to the outer peripheral surface of the second mounting member, and between the bottom wall portion of the lid member and the axial end portion of the second mounting member, outer peripheral edges of the closing member and the partition member. And fixing the closing member and the partitioning member to the opening of the recess in the second mounting member by overlapping and holding the parts together. Mounting device manufacturing method. 7. A mounting member is fixed to an outer peripheral portion of the closing member, and the mounting member is press-fitted and fixed to an inner peripheral surface of the lid member in the atmosphere to thereby provide a space between the closing member and the closing member. The method for manufacturing a fluid-filled mount device according to claim 6, wherein after forming the closed space, the lid fitting is press-fitted and fixed to the outer peripheral surface of the second fitting in the predetermined incompressible fluid.