JP2002013583A - Manufacturing method for liquid filled mounting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method with which a liquid filled mounting device can be produced without bringing about a rise of manufacturing cost and an increase of weight and with better mounting performance using a diaphragm member in which no fitting is employed. SOLUTION: The method of manufacturing the liquid fitted mounting device, comprising the steps of: preparing a diaphragm member 48 around which outer circumferential edge part is arranged a locking portion wherein at least the outer circumferential edge part is composed of a rubber material: forming a first preliminary assembly member 60 wherein the locking portion of the outer circumferential edge part of the diaphragm member 48 is locked around the outer circumferential edge of a partition member 46, thereby the diaphragm member 48 is integrally mounted on the partition member 46; forming a second preliminary assembly member 62 wherein the first preliminary assembly member 60 is fitted over the outer circumferential edge part of a cover member and held therein; and, by using a integrated part in which a first fitting 10 and a cylindrical member in a second fitting 12 are combined by a rubber elastic body 18, mounting the second preliminary assembly member upon the opening part of the cylindrical member in the integral part around the outer circumferential edge part of the cover member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a fluid-filled mounting device, and more particularly to a method of manufacturing a fluid-filled mounting device, which can advantageously improve the assemblability of a diaphragm.

[0002]

2. Description of the Related Art Conventionally, as one type of a mounting device interposed between members constituting a vibration transmission system and connecting the two members with vibration isolation, Japanese Patent Application Laid-Open Nos.
JP-A-9-110936, JP-A-60-104824, JP-A-61-59035, JP-A-61-5
As disclosed in Japanese Patent No. 5429 or the like, a first mounting bracket attached to one member to be vibration-isolated and connected,
A second mounting bracket attached to the other member to be vibration-isolated is elastically connected by a rubber elastic body interposed therebetween, and the second mounting bracket is connected to a rubber elastic body. A cylindrical member to which the cylindrical member is connected, and a lid member attached to the opening of the cylindrical member and covering the opening, and a space partitioned from the outside inside the second mounting bracket. On the other hand, by forming the partition space in a direction perpendicular to the axis of the cylindrical member by a partition member, a pressure receiving part in which a part of a wall portion is formed by the rubber elastic body on the rubber elastic body side. A chamber is formed, and on the lid member side, an equilibrium chamber in which a part of a wall is formed by a diaphragm is formed, and the pressure receiving chamber and the equilibrium chamber are configured to communicate with each other through an orifice passage. With them, Of formed by sealing a predetermined non-compressible fluid in equilibrium chamber structure, so-called fluid-filled mount has been known.

[0003] In such a fluid-filled mounting device, when vibration to be damped is input, an internal pressure difference is generated between the pressure receiving chamber and the equilibrium chamber partitioned by the partition member. The fluid is caused to flow through the orifice passage that communicates between the two chambers, and based on the flow action or resonance action of the fluid that is caused to flow between the two chambers, That is, the anti-vibration effect can be exhibited.

In such a fluid-filled mounting apparatus, a desired pressure receiving chamber or equilibrium chamber is formed inside the mounting apparatus by assembling a partition member or a diaphragm. It is required to assemble the device in such a manner that a predetermined fluid is sealed. Generally, such an assembling operation is performed by using the first mounting bracket and the second mounting bracket described above. An integrated member such as an integrally vulcanized molded product obtained by connecting a cylindrical member with a rubber elastic body is used. A partition member or a diaphragm is attached to an outer peripheral edge of an opening of the cylindrical member in the integrated member. In this case, attachment is performed by a method such as caulking together with the lid fitting.

[0005] For example, as one of the conventionally employed assembling methods of such a fluid-filled mounting device, a cylindrical member of a first mounting member and a cylindrical member of a second mounting member are connected by a rubber elastic body. In the internal space of the integral vulcanized molded product
After injecting and filling a predetermined fluid, a partition member having an orifice passage and a rubber diaphragm are sequentially set, and then, after removing excess fluid, a lid fitting is set, and then the lid is further set. By caulking and fixing between the outer peripheral edge of the metal fitting and the opening of the cylindrical member in the integrally vulcanized molded product, the outer peripheral edges of the partition member and the diaphragm are fixed to the cap metal and the caulking fixed part of the cylindrical member. Let me pinch,
A method is adopted in which the pressure receiving chamber and the equilibrium chamber can be simultaneously sealed.

However, in a system in which the partition member and the diaphragm are placed on the opening of the tubular member and fixed together with the lid member, the diaphragm is formed of a thin rubber film. Because the outer peripheral edge is made of rubber and has a structure that is easily deformed,
When the lid member is pressurized, set, or caulked and fixed to the opening of the cylindrical member, the pressure of the fluid contained in the pressure receiving chamber or the equilibrium chamber increases, thereby increasing the diaphragm. In the case where the outer peripheral edge is turned up and swaged and fixed in that state, a problem such as fluid leakage may be caused. In the case where such a rubber diaphragm, in other words, a diaphragm having at least the outer peripheral edge made of only rubber, is used, there is an inherent problem of work that it is difficult to assemble in a fluid. Was.

For this reason, the aforementioned Japanese Patent Laid-Open No. 59-1109 is disclosed.
As disclosed in Japanese Patent Publication No. 36-36, a rubber-made diaphragm is integrally vulcanized by attaching a metal fitting such as a metal ring to an outer peripheral portion thereof, and such a diaphragm is immersed in a predetermined fluid. In the above, together with the partition member, in the mounting bracket portion, after being press-fitted into the opening of the cylindrical member of the integrally vulcanized molded product (first mounting bracket-rubber elastic body-cylindrical member), the lid member is swaged and fixed However, since it is necessary to prepare a diaphragm in which a mounting bracket is integrally vulcanized and bonded to the outer peripheral edge, only a rubber material is used. In comparison with a rubber diaphragm composed of a rubber diaphragm, it takes more time and effort to manufacture the diaphragm, which also leads to an increase in cost and an inherent problem of increasing the weight of parts. .

[0008]

The present invention has been made in view of the above circumstances, and an object of the present invention is to eliminate the use of mounting brackets without increasing manufacturing costs and weight. To provide a method for manufacturing a fluid-filled mounting device with good assemblability using the above-mentioned diaphragm member, and to provide a diaphragm member that is advantageously used for such a fluid-filled mounting device. It is in.

[0009]

According to the present invention, in order to solve such a problem, a first mounting bracket attached to one member to be vibration-isolated and another member to be vibration-isolated. A cylindrical member to which the second mounting member attached to the member is elastically connected by a rubber elastic body interposed therebetween, and the second mounting member is connected to the rubber elastic member. And a lid member attached to the opening of the tubular member to cover the opening,
A space partitioned from the outside is formed inside the second mounting bracket, and a partition member that partitions the partitioned space in a direction perpendicular to the axis of the cylindrical member is formed on the rubber elastic body side by the rubber elastic body. A pressure receiving chamber with a part of
An equilibrium chamber in which a part of a wall is formed by a diaphragm is formed on the lid member side, and the pressure receiving chamber and the equilibrium chamber are configured to be connected to each other through an orifice passage. A method of manufacturing a fluid-filled mounting device configured by filling a predetermined incompressible fluid in an equilibrium chamber is provided. (A) As the diaphragm,
A step of preparing a diaphragm member having at least an outer peripheral edge made of only a rubber material and having an engaging portion provided on the outer peripheral edge; and (b) engaging the outer peripheral edge of the diaphragm member. Forming a first pre-assembled body in which the diaphragm member is integrally assembled with the partition member by locking the portion to an outer peripheral edge of the partition member; and Fitting the spare assembly to the outer peripheral edge of the lid member to form a second spare assembly held by the lid member, and (d) the first mounting bracket and the Using an integrated member obtained by connecting the cylindrical member of the second mounting member with the rubber elastic body, the second pre-assembled member is attached to the opening of the cylindrical member in the integrated member. Attaching at the outer peripheral edge of the lid member And the manufacturing method of the fluid-filled mount which comprises, is to its gist.

In other words, according to the method of manufacturing the fluid-filled mounting device according to the present invention, the diaphragm member that provides the diaphragm constituting a part of the wall of the equilibrium chamber has at least the outer peripheral edge made of only a rubber material. The mounting bracket is not made by vulcanization bonding as in the past, and it is based on the use of such mounting bracket, and furthermore, the manufacturing complexity due to the use of the vulcanization bonding There is absolutely no increase in performance or production cost, and only the absence of mounting brackets
The weight of the diaphragm member can also be effectively reduced.

[0011] And such a diaphragm member,
Also, the outer peripheral edge of the partition member is locked to the locking portion provided at the outer peripheral edge, whereby the diaphragm member is integrally assembled to the partition member, and the first preliminary assembly is performed. It is fitted to the outer peripheral edge of the lid member, and as a second pre-assembled body that is held by the lid member and handled integrally, the assembly is performed. In order for the components to be handled in one assembly at all times, and finally to be attached and fixed to the (first fitting-rubber elastic-tubular component) monolith, The attachment work becomes simple and easy, and the workability can be effectively improved. In addition, the outer peripheral edge of the diaphragm member is locked to the outer peripheral edge of the partition member, and in a state in which the deformation of the diaphragm member is restrained, the outer peripheral edge of the diaphragm member is fitted and held in the outer peripheral edge of the lid member, and in that state, In addition, since it is attached to the opening of the cylindrical member in the integrated member, even if an internal pressure is generated in the pressure receiving chamber or the equilibrium chamber by caulking and fixing at the time of such attachment, the outside of the diaphragm member is The assembling operation can be completed without causing a phenomenon such as turning over in the peripheral portion, so that the occurrence of defective products can be effectively reduced, and the quality can be advantageously improved.

According to one preferred aspect of the method of manufacturing the fluid-filled mounting device according to the present invention, the diaphragm member has a rising portion rising from an outer peripheral edge as the locking portion at the outer peripheral edge thereof. And an inner flange portion extending inward from the upper end thereof, and having a U-shaped section, while the partition member has a rising portion formed on an outer peripheral edge thereof, The first preliminary assembly is formed by receiving and locking the rising portion of the partition member in a recess in the U-shaped section of the diaphragm member. By adopting such a locking structure between the outer peripheral edge of the diaphragm member and the outer peripheral edge of the partition member, the integral assembly of the diaphragm member and the partition member can be performed more advantageously. Thus, the object of the present invention can be achieved even better.

According to another preferred aspect of the method of manufacturing the fluid-filled mounting device according to the present invention, the lid member has a cylindrical fitting portion formed on an outer peripheral edge thereof. In the cylindrical fitting portion, the first preliminary assembly is press-fitted, and is fitted in a fluid-tight manner,
A second pre-assembly is formed by holding such a first pre-assembly on the lid member. By such a press-fitting operation, the first pre-assembled body is firmly held by the lid member, but even if such a press-fitting operation is adopted, the outer peripheral edge of the diaphragm member is partitioned. Since the outer peripheral edge of the diaphragm is locked to the outer peripheral edge of the member, the holding by the lid member can be advantageously achieved without causing any inconvenience such as the outer peripheral edge of the diaphragm being turned up.

Further, according to another preferred embodiment of the present invention, the first preliminary assembly is formed by fitting the first preliminary assembly to an outer peripheral portion of the lid member. A sealed airtight air chamber defined by the diaphragm member and the lid member is formed, and the second pre-assembly is attached to the integrated body in the predetermined fluid. Thereby, a method is adopted in which the fluid is simultaneously sealed in the pressure receiving chamber and the equilibrium chamber. Thus, in a state where a sealed air-tight air chamber is formed in the second pre-assembly, such a second pre-assembly is attached to the integrated body in a fluid. Accordingly, the fluid is simultaneously sealed in the pressure receiving chamber and the equilibrium chamber, and the formation of such an air chamber can exert an effective cushioning effect on the diaphragm member. .

In the method of manufacturing a fluid-filled mounting device according to the present invention, preferably, the orifice passage is provided in the partition member, and the orifice passage is provided in the partition member. Can be advantageously formed by superimposing a plurality of parts on a superposed structure of a plurality of parts.

Further, in the present invention, a diaphragm member suitably employed in the above-described fluid-filled mounting device is also an object, and more specifically, one of the diaphragm members to be vibration-proof connected. A first mounting bracket attached to the member and a second mounting bracket attached to the other member to be vibration-isolated connected, elastically connected by a rubber elastic body interposed therebetween, The second mounting bracket includes a cylindrical member to which the rubber elastic body is connected, and a lid member attached to an opening of the cylindrical member to cover the opening. A space partitioned from the outside is formed inside the mounting bracket, and a partition member that partitions the partitioned space in a direction perpendicular to the axis of the cylindrical member is formed on the rubber elastic body side by the rubber elastic body. The receiver whose A chamber and an equilibrium chamber in which a part of a wall portion is formed by a diaphragm on the lid member side are formed so that the pressure receiving chamber and the equilibrium chamber are connected to each other through an orifice passage. In a fluid-filled mounting device in which a predetermined incompressible fluid is filled in a pressure receiving chamber and an equilibrium chamber, at least an outer peripheral edge of the diaphragm member used as the diaphragm is made of only a rubber material. In addition, a U-shaped cross section including a rising portion rising from the outer peripheral edge and an inner flange portion extending inward from the upper end thereof is formed on the outer peripheral edge portion as a locking portion. In the concave portion of the U-shaped portion, a rising portion provided on the outer peripheral edge of the partition member is accommodated and locked, whereby the partition member is The fluid-filled mount for the diaphragm member, characterized in that is adapted to be integrally assembled, is to its gist. And, by using the diaphragm member having such characteristics, the same advantages as those described above can be enjoyed.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention will be described in detail with reference to the drawings.

First, FIG. 1 shows an engine mount for a vehicle, which is one of fluid-filled mounting devices manufactured according to the present invention. The engine mount includes a metal plate-shaped first mounting bracket 10 and an intermediate sleeve 14 as a cylindrical member, each of which is made of metal.
And a second fitting 12 comprising a bottom fitting 16 as a lid member, and the first fitting 10 and the second fitting 1
And a rubber elastic body 18 for elastically connecting the intermediate sleeve 14 to the power supply unit of the vehicle, and a bottom metal fitting 16 constituting the second mounting metal 12 However, when the power unit is attached to the body of the automobile, the power unit is supported on the body by vibration isolation. In such a mounted state, the rubber elastic body 18 is elastically deformed by the weight of the power unit, and the first mounting bracket 10 and the second mounting bracket 12 are moved closer to each other. It will be able to be done. In this mounting state, the main vibration to be damped is the first mounting bracket 1.
0 is input in the approach / separation direction of the second mounting bracket 12 (in the vertical direction in FIG. 1 which is the center axis of the mount). And here, the vertical direction means, in principle,
The vertical direction in FIG. 1 is assumed.

More specifically, the first mounting member 10 has a substantially disk shape and extends radially outward at a part of the outer periphery thereof, and has a protruding tip bent downward. And
Further, a substantially hook-shaped stopper portion 20 whose lower end portion is bent inwardly in an L-shape is integrally formed. Further, in the center of the lower surface of the first mounting member 10, a cup-shaped metal member 22 having a tapered peripheral wall is superposed at the opening thereof,
It is fixed by welding or the like. Further, a mounting bolt 24 protruding upward is fixed at the center of the first mounting bracket 10, and the first mounting bracket 1 is fixed by the mounting bolt 24.
0 is fixedly attached to a power unit (not shown).

On the other hand, the second mounting member 12 is an intermediate sleeve 14 which is a cylindrical member to which the rubber elastic body 18 is connected.
And a bottom fitting 16 which is attached to an opening below the intermediate sleeve 14 and covers the opening. Therefore, the intermediate sleeve 14 has a large-diameter cylindrical shape as a whole, and the upper opening in the axial direction has a tapered portion 26 expanding toward the opening.
A part of the circumferential direction of the tapered portion 26 is slightly extended in the radial direction, and a stopper abutting portion 28 is integrally formed. An annular plate-shaped stepped portion 30 extending radially outward is provided, and a cylindrical caulked portion 32 is formed so as to protrude outward (downward) in the axial direction from an outer peripheral edge of the stepped portion 30. Are integrally formed. Further, together with the intermediate sleeve 14, the bottom fitting 16 constituting the second mounting fitting 12 has a shallow bottomed cylindrical shape or a cap shape whose bottom protrudes downward in a triangular shape, and has a triangular shape. At one inclined bottom wall portion of the shape, a mounting bolt 34 projecting downward at a predetermined angle with respect to the mount axis is fixedly mounted, and a cylindrical opening at an upper portion thereof extends radially outward. A flange-like portion 36 and a cylindrical fitting portion 38 having a predetermined height rising upward from an outer peripheral edge thereof are integrally formed. Then, the flange-like portion 36 and the fitting portion 38 constituting the upper opening of the bottom fitting 16 are wrapped around and fixed by caulking at the caulking portion 32 of the intermediate sleeve 14, thereby forming the intermediate sleeve 14. And the bottom fitting 16 are fixedly assembled. Further, the mounting bolt 34 fixed to the bottom bracket 16 is fixed to a body (not shown), so that the second mounting bracket 12 is fixedly attached to the body at a predetermined angle in the mount axis direction. It is supposed to be.

Then, on the substantially central axis of the second mounting bracket 12, the first mounting bracket 10 is separated upward in the axial direction.
Are disposed so as to extend in the direction perpendicular to the axis, and are opposed to each other in the axial direction, and the opposing surfaces of the intermediate sleeve 14 that constitutes the first mounting bracket 10 and the second mounting bracket 12. A rubber elastic body 18 is interposed therebetween. The rubber elastic body 18 has a large diameter substantially hollow truncated cone shape, and is vulcanized in a state where the first mounting member 10 is superimposed on the small diameter side end surface and the cup-shaped metal member 22 is inserted in the axial direction. On the other hand, the inner peripheral surface of the tapered portion 26 of the intermediate sleeve 14 is superposed on the outer peripheral surface of the large-diameter end portion of the rubber elastic body 18 and is vulcanized and adhered. In short, the rubber elastic body 18 is formed as an integral vulcanized molded product (integrated product) including the intermediate sleeve 14 of the first mounting fitting 10 and the second mounting fitting 12.
The opening on the upper side in the axial direction is covered by the rubber elastic body 18 in a fluid-tight manner. Note that a large-diameter circular recess 40 that opens into the intermediate sleeve 14 is formed on the large-diameter end surface of the rubber elastic body 18.

The stopper contact portion 28 of the intermediate sleeve 14 is formed with a cushion rubber 42 which covers the inner and outer surfaces and protrudes upward and downward in the axial direction. The cushioning rubber 44 is formed integrally with the rubber elastic body 18 in a state of being vulcanized and adhered also to the lower surface of the mounting bracket 10, and is separated vertically above and below the stopper contact portion 28. Then, the stopper portion 20 of the first mounting member 10 which is disposed opposite to the first
By abutting the stopper abutting portion 28 via 2, 44, an excessive relative displacement between the first mounting member 10 and the intermediate sleeve 14, and thus the second mounting member 12 is limited. It has become.

On the other hand, the opening below the circular recess 40 of the rubber elastic body 18 is connected to the second mounting member 12 (the intermediate sleeve 14+
By covering with the bottom bracket 16), the space defined from the outside formed inside the second mounting bracket 12 has a plane circular shape arranged so as to extend in a direction perpendicular to the mount axis. The outer peripheral edges of the partition member 46 and the diaphragm 48 are fixed and held at the caulking fixing portion between the intermediate sleeve 14 and the bottom fitting 16, thereby partitioning the rubber elastic body 18 of the partition member 46.
The space on the side is a pressure receiving chamber 50, the space between the partition member 46 and the diaphragm 48 is a balancing chamber 52, and the space of the bottom fitting 16 is hermetically sealed by the diaphragm 48. Is formed so that the deformation of the diaphragm 48 can be allowed.

Here, the partition member 46 is formed by laminating a hat-shaped upper orifice fitting 46a and a lower orifice fitting 46b obtained by press-molding a metal plate, and these fittings 46a, 46b
As a result, the orifice passage 56 extending in the circumferential direction is formed by the stepped portion at the upper corner of the orifice lower metal fitting 46b. Although not shown, the orifice passage 56 has an orifice upper fitting 46a.
While communicating with the pressure receiving chamber 50 through a through hole provided in the balance chamber 52 through a through hole (not shown) provided through the orifice lower bracket 46b. The pressure receiving chamber 50 and the equilibrium chamber 5
The two are communicated with each other. Further, the diaphragm 48 is made of a rubber thin film having a circular planar shape, which is a flexible film, and as described later, its outer peripheral edge is not provided with any mounting hardware, and is simply
It is composed only of rubber material. Then, the partition member 46 and the diaphragm 48 are overlapped with each other, and the outer peripheral edge thereof is formed with the step portion 30 of the intermediate sleeve 14 and the bottom fitting 16.
In the form sandwiched between the flange-like portion 36 of
The pressure receiving chamber 50 and the equilibrium chamber, in which the space defined from the outside and which is formed in the second mounting bracket 12 is sealed by being caulked and fixed between the intermediate sleeve 14 and the bottom bracket 16 at the same time. 52 and air chamber 54
In addition, each is divided.

Further, in the pressure receiving chamber 50 and the equilibrium chamber 52 sealed as described above, the same incompressible fluid as that of the related art is sealed, and the orifice passage provided in the partition member 46 is provided. 56, the pressure receiving chambers 5
Between the zero and the equilibrium chamber 52, they can be made to flow mutually. Water, an alkylene glycol, a polyalkylene glycol, a silicone oil, or the like is used as the fluid to be filled in the pressure receiving chamber 50 or the equilibrium chamber 52. In particular, the vibration damping effect based on the resonance action of the fluid is advantageous. In this case, a low-viscosity fluid of 0.1 Pa · s or less is preferably used here.

Therefore, in the engine mount having such a structure, the vibration to be damped is reduced by the first mounting member 10.
When input is made between the pressure receiving chamber 50 and the second mounting bracket 12, an internal pressure difference is generated between the pressure receiving chamber 50 and the equilibrium chamber 52, and
Based on the relative pressure fluctuations created between the pressure receiving chamber 50 and the equilibrium chamber 52, fluid flow is induced through the orifice passage 56, and the fluid resonates based on such fluid flow. The vibration-proof effect by the action and the like is exhibited.

Here, the present invention provides an effective method for manufacturing an engine mount having such a configuration. Specifically, for example, the steps shown in FIGS. It has a great feature in adopting it to produce the target engine mount.

That is, according to the present invention, first, the diaphragm 48 in the target engine mount is prepared.
At least the outer peripheral edge portion is formed of only a rubber material, and the outer peripheral edge portion is formed of a diaphragm member provided with a locking portion.
As shown in FIG. 2, the entirety is made of a rubber thin film and is made of a rubber material. The outer peripheral edge portion has a rising portion 48a which rises from the outer peripheral edge, and extends radially inward from the upper end thereof. The inner flange portion 48b is integrally formed, and the outer peripheral edge portion having a U-shaped cross section is configured to include the rising portion 48a and the inner flange portion 48b. It is. On the other hand, the partition member 4
The orifice lower bracket 46b forming the upper part 6 is formed with a rising part 46ba extending upward at an outer peripheral edge thereof.

The rising portion 46ba of the orifice lower metal fitting 46b constituting the partition member 46 is accommodated in a concave portion of a U-shaped cross section serving as a locking portion 58 provided on the outer peripheral edge of the diaphragm 48. By being stopped, the diaphragm 48 is moved to the orifice lower bracket 46.
b, the diaphragms 48
A first pre-assembly body 60 having an equilibrium chamber 52 formed between it and the lower orifice fitting 46b is formed. By assembling the orifice lower bracket 46b and the diaphragm 48, a rising portion 46ba provided on the outer peripheral edge of the orifice lower bracket 46b has a U-shaped cross section as shown in an enlarged view in FIG. And a rubber layer is formed on the outer peripheral surface thereof. In addition, the locking portion 5 on the outer peripheral edge of the diaphragm 48
Since the outer peripheral portion of the diaphragm 48 is effectively restrained by being restrained and held in a form in which the outer peripheral portion 8 is hooked on the rising portion 46ba of the lower orifice fitting 46b, it is possible to effectively prevent such deformation (turning over) of the outer peripheral portion of the diaphragm 48. -ing

Next, the first pre-assembled body 60 thus obtained is fitted on the outer peripheral edge thereof with the bottom bracket 16 constituting the second mounting bracket 12, whereby the first preliminary assembled body 60 is fitted. The second pre-assembled body is formed in the form of being held by the bottom fitting 16, as shown in FIG.
In the example shown in FIG. 5, the first preliminary assembly 60 is attached to the cylindrical fitting portion 38 provided in the upper opening of the bottom fitting 16.
A second pre-assembled body 62 is formed by being fitted by being press-fitted at its outer peripheral edge. By press-fitting the first preliminary assembly 60 to the bottom fitting 16, the outer peripheral edge of the lower orifice fitting 46 b constituting the partition member 46 and the fitting portion 38 of the bottom fitting 16 are formed. Since the outer peripheral edge of the diaphragm 48 is present, the sealing at the press-fitting portion can be effectively performed, and the inside of the bottom fitting 16 is formed by the diaphragm 48.
Is sealed from the outside by the airtight air chamber 54.
Are formed.

Further, the second pre-assembled body 62 thus obtained is then used for the previously prepared (first mounting bracket 10-rubber elastic body 18-intermediate sleeve 14) integrated body. In the opening of the intermediate sleeve 14, the outer peripheral edge portion of the bottom fitting 16 in the second pre-assembled body 62 is to be attached. In the example process shown in FIG. The integrated product is prepared as a vulcanized molded product in which the first mounting fitting 10 and the intermediate sleeve 14 of the second mounting fitting 12 are connected by an integral vulcanization forming operation with a rubber elastic body 18. Then, the second pre-assembled body 62 described above, with respect to the swaged portion 32 of the intermediate sleeve 14 in such a vulcanized molded product, is provided with the orifice upper metal fitting 46a as the other member of the partition member 46. In, assembled in a given fluid to be sealed, whereby, on the orifice in the orifice under bracket 46b of the first pre-assembly body 60 fitting 4
6a are overlapped to complete the partition member 46 having the orifice passage 56, and such a partition member 4
6, the pressure receiving chamber 50 is formed, and at the same time, a fluid is sealed in such a pressure receiving chamber 50, while a pressure receiving chamber 50 is formed in the equilibrium chamber 52 formed between the partition member 46 and the diaphragm 48. In addition, the fluid is sealed.

Further, the integrally vulcanized molded product (the first mounting member 10-the rubber elastic body 18-the intermediate sleeve 14) thus assembled, the orifice upper metal member 46a,
The second pre-assembly 62 further includes a caulking portion 32 of the intermediate sleeve 14 that is subsequently caulked in or after removal from such fluid,
Fitting portion 38 of bottom fitting 16 in second preliminary assembly 62
And by being caulked and fixed to the flange-like portion 36,
The outer peripheral edge of the orifice upper metal fitting 46a and the orifice lower metal fitting 46b constituting the partition member, and the outer peripheral edge of the diaphragm 48 are formed by the caulked portion 32 of the intermediate sleeve 14 and the bottom metal fitting 1.
6 at the caulking fixed portion with the outer peripheral edge (36, 38),
The engine mount as a final fluid-filled mounting device is completed by being clamped and fixed in a fluid-tight manner.

Therefore, according to such an engine mount manufacturing method, it is not necessary to provide the diaphragm 48 with a conventional mounting bracket by vulcanization bonding.
Not only the manufacturing of such a diaphragm 48 is facilitated, but also the manufacturing cost can be effectively reduced, and the weight can be reduced because no mounting bracket is provided. That would be.

And, such a diaphragm 48 is
The locking portion 58 provided on the outer peripheral edge portion is
6 and the outer peripheral edge (46
The first pre-assembled body 60 which is integrally assembled by being locked at ba) is adapted to be fitted to and held by the bottom fitting 16, and the diaphragm 48 The outer peripheral edge of the
The problem of causing a problem such as deterioration of the sealing property is completely eliminated, and therefore, the occurrence of defective products due to the problem can be completely avoided.

Further, here, the first pre-assembled body 60 is pressed into the outer peripheral surface of the fitting portion 38 on the outer peripheral edge of the bottom fitting 16 to press the air chamber in the bottom fitting 16. As shown in FIG. 4 (first mounting fitting 10-rubber elastic body 18-intermediate sleeve 14), the integrally vulcanized molded product, the orifice upper fitting 46 a, and the second An assembling operation with the pre-assembly body 62 is performed, whereby the pressure receiving chamber 50 and the balancing chamber 52 are simultaneously
The fluid can be effectively sealed therein.

The method of manufacturing the engine mount according to one embodiment of the present invention has been described in detail above. However, this is merely an example, and the present invention is not limited to this embodiment. It should be understood that the description is not to be construed as limiting in any way.

For example, it is desirable that the diaphragm 48 is a thin member made entirely of a rubber material, as shown in the example, from the viewpoint that the features of the present invention can be more fully exhibited. If the member is composed only of a rubber material, since the problems in the present invention are inherent, in order to solve such problems, the present invention can be advantageously applied, Therefore, a member whose material is changed by attaching another member to the central portion of the diaphragm, or by embedding fibers or canvas, can be adopted as the diaphragm. .

In such a diaphragm (member) according to the present invention, the locking portion provided on the outer peripheral edge portion may have a shape like a U-shaped section (58) as shown in the drawings. In relation to the shape of the outer peripheral edge of the orifice lower metal fitting 46b constituting the member 46, the structure for locking the outer peripheral edge of the diaphragm (member) is the most desirable structure.
It goes without saying that any other structure can be adopted as long as the diaphragm 48 is locked to the outer peripheral edge of FIG.

Further, even in the structure of the partition member 46, as shown in the specific example, as a superposed structure of a plurality of parts such as an overlap of the upper orifice bracket 46a and the lower orifice bracket 46b, the plural parts are overlapped. The configuration in which the orifice passage 56 is formed by the superposition of (46a, 46b) can be suitably adopted. However, such a partition member is formed as an integral structure made of a suitable synthetic resin, metal, or the like. As an object, an orifice passage (56) may be formed in the inside thereof, and in any case, the structure of a known partition member may be employed as it is. Therefore, as is well known, such a partition member (46) can further be provided with a vibration isolating mechanism such as a movable plate, and the orifice passage (56) can be formed by a member other than the partition plate (46). Alternatively, it is also possible to provide it at a site.

Further, when fitting the first preliminary assembly 60 to the outer peripheral edge of the bottom fitting 16 according to the present invention, the first preliminary assembly 60 may not be easily removed. The press-fitting operation is not an essential requirement as long as it is held by the bottom bracket 16, but if the second pre-assembled body 62 is formed by press-fitting as illustrated, Between the fitting portion 38 of the metal fitting 16 and the outer peripheral edge (rising portion 46ba) of the orifice lower metal fitting 46b, the rubber (the locking portion 5) of the outer peripheral edge of the diaphragm 48 is provided.
8, especially the rising portion 48a) can be firmly clamped, and an effective seal can be secured.
There is a feature that the airtightness of the air chamber 54 formed in the bottom fitting 16 can be effectively improved. The fitting and holding structure of the first pre-assembled body 60 with respect to the bottom bracket 16 is such that the first preliminary assembly 60 is fitted to the outer peripheral surface of the outer peripheral edge of the bottom bracket 16, contrary to the illustrated example. It is also possible.

As described above, by making the air chamber 54 formed in the bottom fitting 16 airtight, an effective cushioning property is imparted to the diaphragm 48, and as shown in FIG. However, such an air chamber 54 can also be provided with a bottom fitting, as is well known, in which the assembly step in a fluid as shown in FIG. Even if it is made to communicate with the atmosphere by the through-hole provided in 16, there is no problem.

(First mounting member 10-rubber elastic member 18-intermediate sleeve 14) The bottom metal member 16 of the second pre-assembly 62 with respect to the lower opening of the intermediate sleeve 14 in the integrally vulcanized molded product. Even in the mounting structure of the upper opening, other fixing structures other than the caulking fixing can be adopted. Further, even in such a caulking fixing structure, the bottom fitting 16 It is also possible to provide a caulking portion at the upper opening of the intermediate sleeve 14 and to caulk it at the lower opening of the intermediate sleeve 14.

In addition, in the structure of the engine mount, which is a fluid-filled mounting device, various known structures are adopted. For example, the bottom bracket (16) can be attached to the body in the mount axis direction. And
In addition, a structure in which the intermediate sleeve 14 is attached to the body side can be adopted.

It should be noted that the present invention can be advantageously applied to an automotive engine mount, an automotive body mount, a differential mount, or a fluid-filled vibration isolator in various devices other than an automobile. .

Furthermore, although not enumerated one by one, the present invention can be embodied in modes in which various changes, modifications, improvements, etc. are added based on the knowledge of those skilled in the art. It goes without saying that all aspects fall within the scope of the present invention unless they depart from the spirit of the present invention.

[0046]

As is apparent from the above description, according to the method of manufacturing a fluid-filled mounting device according to the present invention, fluid is sealed by using a diaphragm member which does not have a fitting on the outer peripheral edge. It is possible to easily manufacture the type mount device with good assemblability and advantageously reducing the occurrence of defective products, and by using such a diaphragm member, it is possible to reduce the manufacturing cost. It can be achieved effectively. In addition, the diaphragm member for a fluid-filled mounting device according to the present invention can be advantageously used as a diaphragm member capable of effectively improving the workability in manufacturing the fluid-filled mounting device.

[Brief description of the drawings]

FIG. 1 is an explanatory longitudinal sectional view showing an example of an automobile engine mount, which is one of fluid-filled mounting devices manufactured according to the present invention.

FIG. 2 is a perspective view of the engine mount shown in FIG.
It is a longitudinal section explanatory view for explaining the process of forming the 1st pre-assembly body assembled as one.

FIG. 3 illustrates a process of press-fitting the first preliminary assembly obtained in FIG. 2 into a bottom fitting to form a second preliminary assembly when manufacturing the engine mount shown in FIG. FIG.

FIG. 4 is a cross-sectional view of the engine mount shown in FIG. 1 in which the second pre-assembly obtained in FIG. It is a longitudinal section explanatory view for explaining a process of assembling to an integral vulcanization molding.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 First mounting bracket 12 Second mounting bracket 14 Intermediate sleeve 16 Bottom bracket 18 Rubber elastic body 20 Stopper section 22 Cup-shaped bracket 24 Mounting bolt 26 Taper section 28 Stopper contact section 30 Step section 32 Caulking section 34 Mounting bolt 36 Flange-shaped part 38 Fitting part 40 Circular concave part 42, 44 Buffer rubber 46 Partition member 46a Orifice upper metal fitting 46b Orifice lower metal fitting 46ba Rising part 48 Diaphragm 48a Rising part 48b Inner flange part 50 Pressure receiving chamber 52 Equilibrium chamber 54 Air chamber 56 Orifice 58 locking part 60 first preliminary assembly 62 second preliminary assembly

Claims (7)

[Claims] 1. A first mounting bracket attached to one member to be vibration-isolated and a second mounting bracket attached to another member to be vibration-isolated connected therebetween. The elastic member is elastically connected by the squeezed rubber elastic member, and the second mounting member is attached to the cylindrical member to which the rubber elastic member is connected and the opening of the cylindrical member, and the opening is formed. And a cover member for covering, to form a space partitioned from the outside inside the second mounting bracket, and the rubber member is partitioned by a partition member that partitions the partitioned space in a direction perpendicular to the axis of the cylindrical member. A pressure receiving chamber in which a part of the wall is formed by the rubber elastic body on the elastic body side, and an equilibrium chamber in which a part of the wall is formed by the diaphragm on the lid member side are formed. And the equilibrium chamber In a method of manufacturing a fluid-filled mounting device configured to be connected to the pressure receiving chamber and the equilibrium chamber by filling a predetermined incompressible fluid, at least the outer peripheral edge portion of the diaphragm is used as the diaphragm. A step of preparing a diaphragm member made of only a rubber material and having a locking portion provided on the outer peripheral edge; and a step of preparing a locking portion of the outer peripheral edge of the diaphragm member by the outer peripheral edge of the partition member. Forming a first pre-assembled body in which the diaphragm member is integrally assembled with the partition member by engaging the first pre-assembled body outside the lid member. Forming a second pre-assembled body that is fitted to the peripheral edge portion and held by the lid member; and the rubber bullet is attached to the first mounting member and the cylindrical member of the second mounting member. Attaching the second preliminary assembly to the opening of the tubular member in the integrated body at an outer peripheral edge of the lid member using an integrated body connected by a sex body. And a method for manufacturing a fluid-filled mounting device. 2. The U-shaped cross section of the diaphragm member including, at the outer peripheral edge thereof, a rising portion rising from the outer peripheral edge and an inner flange portion extending inward from the upper end as the locking portion. The partition member has a rising portion formed on an outer peripheral edge thereof, and the rising portion of the partition member is housed in a recess in the U-shaped cross section of the diaphragm member. The method for manufacturing a fluid-filled mounting device according to claim 1, wherein the first preliminary assembly is formed by being locked. 3. The lid member has a tubular fitting portion formed on an outer peripheral edge thereof, and the first preliminary assembly is press-fitted into the tubular fitting portion. 3. The method of manufacturing a fluid-filled mount device according to claim 1, wherein the fluid-tight mount device is fitted in a fluid-tight manner. 4. The first pre-assembled body is fitted with the outer peripheral edge of the lid member to be partitioned by a diaphragm member and the lid member that constitute the first pre-assembled body.
While the sealed air-tight air chamber is formed, the mounting of the second pre-assembly to the integrated body in the predetermined fluid allows the fluid to flow into the pressure receiving chamber and the equilibrium chamber. 4. The method of manufacturing a fluid-filled mounting device according to claim 1, wherein the sealing is performed simultaneously. 5. The method of manufacturing a fluid-filled mounting device according to claim 1, wherein the orifice passage is provided in the partition member. 6. The fabrication of a fluid-filled mounting device according to claim 5, wherein the partition member is a superposed structure of a plurality of parts, and the orifice passage is formed by overlapping the plurality of parts. Method. 7. A first mounting bracket attached to one member to be vibration-isolated connected and a second mounting bracket attached to the other member to be vibration-isolated connected therebetween. The elastic member is elastically connected by the squeezed rubber elastic member, and the second mounting member is attached to the cylindrical member to which the rubber elastic member is connected and the opening of the cylindrical member, and the opening is formed. And a cover member for covering, to form a space partitioned from the outside inside the second mounting bracket, and the rubber member is partitioned by a partition member that partitions the partitioned space in a direction perpendicular to the axis of the cylindrical member. A pressure receiving chamber in which a part of the wall is formed by the rubber elastic body on the elastic body side, and an equilibrium chamber in which a part of the wall is formed by the diaphragm on the lid member side are formed. And the equilibrium chamber In a fluid-filled mounting device configured to be connected to each other and filled with a predetermined incompressible fluid in the pressure receiving chamber and the equilibrium chamber, at least the outer peripheral edge portion is used as a diaphragm member used as the diaphragm. Is formed of only a rubber material, and a U-shaped section including a rising portion rising from the outer peripheral edge and an inner flange portion extending inward from the upper end thereof is provided at the outer peripheral edge portion. It is formed as a stopper, and a rising portion provided on the outer peripheral edge of the partition member is accommodated in a recess in the U-shaped cross section, and is locked, whereby the partition member is A diaphragm member for a fluid-filled mounting device, wherein the diaphragm member is adapted to be assembled integrally.