JP4375246B2 - Liquid seal vibration isolator with resin bracket - Google Patents

Description

  The present invention relates to a vibration isolator, and more particularly to a liquid seal vibration isolator with a resin bracket.

2. Description of the Related Art In recent years, with an increasing need for weight reduction of vehicles, there is an increasing need for weight reduction for vibration isolation mounts and other vibration isolation devices that support the vibration isolation of engines.
In this case, making the bracket in the vibration isolator resin is an effective means for reducing the weight.

By the way, as a kind of vibration isolator, a liquid seal type vibration isolator is used in which a liquid is sealed in a liquid chamber and vibration is attenuated based on the flow of the liquid.
Then, the bracket in this liquid seal vibration isolator is made of resin, and the liquid seal vibration isolator with resin bracket having the following configuration, that is, (a) a rigid attachment that is attached and fixed to one of the supporting member and the supported member A member, (b) a resin bracket that is attached and fixed to the other, (c) a main rubber portion that elastically connects the attachment member and the resin bracket, and (d) a liquid chamber is formed on the inside by forming a cylindrical shape, A cylindrical metal fitting that connects the main rubber part and the resin bracket in a state where one of the liquid chambers in the axial direction is closed by the main body rubber part, and (e) a rubber diaphragm that closes the other of the liquid chambers in the axial direction. A lid provided, (f) a partition member that is incorporated in the liquid chamber and divides the liquid chamber into a first liquid chamber and a second liquid chamber, and (g) communicates the first liquid chamber and the second liquid chamber. A liquid seal vibration isolator with a resin bracket comprising an orifice passage to be made is conventionally known.

Patent Document 1 below discloses an example of a liquid seal vibration isolator with this kind of resin bracket.
FIG. 12 shows a specific example thereof.
In the figure, 200 is a rigid mounting member that is fixedly attached to one of the supporting member and the supported member, 202 is a main rubber part, 204 is a resin bracket, and 206 and 208 are a first liquid chamber and a second liquid chamber, respectively. , 210 is a partition member for partitioning them.

An annular orifice passage 212 that allows the first liquid chamber 206 and the second liquid chamber 208 to communicate with each other is formed in the partition member 210.
Reference numeral 214 denotes a lid including a rubber diaphragm 216 and a metal rigid lid plate 218, and one of the liquid chambers formed in the cylindrical fitting 220 in the axial direction is closed by the lid 214.
The other side of the liquid chamber in the axial direction is closed by the main rubber part 202.
Reference numeral 215 denotes an air chamber formed outside the diaphragm 216.

The cylindrical metal fitting 220 is slightly protruded from the resin bracket 204 in the axial direction, and the protruding portion is caulked to the outer peripheral portion of the metal lid plate 218 in the lid body 214. In the figure, 222 represents the caulking portion.
That is, in the liquid seal vibration isolator with a resin bracket shown in FIG. 12, the resin bracket 204 is formed integrally with the mount body made of an integrally vulcanized product of the main body rubber portion 202 and the mounting member 200, and is preliminarily assembled. The lid 214 is assembled by caulking to form a liquid seal vibration isolator with a resin bracket.

Patent Document 2 listed below discloses a method for forming a resin bracket on a mount body in this type of liquid seal vibration isolator with a resin bracket.
FIG. 13 shows a specific example thereof.
In the figure, reference numeral 224 denotes a mold for molding the resin bracket 204. As shown in the figure, here, a mount body made of an integrally vulcanized product of the main body rubber portion 202, the mounting member 200, and the cylindrical metal fitting 220 is shown as a mold. The mold 224 is set, and the resin material is filled in the cavity 226 formed in the mold 224, and the resin bracket 204 is formed integrally with the mount body.
The lid body 214 of FIG. 12 is caulked to the preliminary assembly obtained in this way in a later step, and constitutes a liquid seal vibration isolator with a resin bracket shown in FIG.

By the way, when the resin bracket 204 is molded and integrated with the mount main body having the main body rubber portion 202 as described above, the following problems occur.
When a resin material is injected into the cavity 226 of the mold 224 at a predetermined pressure and the resin bracket 204 is molded, a force that elastically deforms the main rubber portion 202 acts on the rubber bracket 202 with the pressure.
Accordingly, the mold 224 is brought into contact with the main rubber part 202 so that the main rubber part 202 is not deformed by the pressure at that time, and the pressure applied to the main rubber part 202 is received by the mold 224. It will be necessary.

  However, the shape of the main body rubber portion 202 is variously different depending on the vehicle performance, that is, the anti-vibration performance required for the anti-vibration device. When integrated, the mold 224 for molding the resin bracket 204 becomes a dedicated mold, and each time the shape of the main rubber part 202 is different, a dedicated mold 224 is required. As a result, the manufacturing cost of the vibration isolator becomes high.

The vibration isolator shown in FIG. 12 also has the following problems.
In the case of the vibration isolator shown in FIG. 12, when the caulking process is performed to bend the caulking part 220 in the state of standing up in the annular direction in the axial direction, that is, the distal end part of the cylindrical fitting 220 before caulking process, The cylindrical fitting 220 itself cannot receive the caulking force at that time, and the caulking force must be received by the resin bracket 204.
In this case, the resin bracket 204 may be greatly distorted by the action of the caulking force, and the resin bracket 204 may be cracked or cracked when the receiving bracket and the resin bracket 204 are incompatible with each other. There is.

JP-A-9-79310 JP 2000-65119 A

The present invention has been made for the purpose of providing a liquid seal vibration isolator with a resin bracket that can be manufactured at a low manufacturing cost.
Another object of the present invention is to solve the problem of cracks and cracks in the resin bracket when the liquid seal vibration isolator with resin bracket is assembled and integrated by caulking.

Thus to those of claim 1, a mounting member rigid fixedly attached to one of (a) a support member and the supported member, and the resin bracket is fixedly attached to (b) the other, (c) said attachment and the elastic body elastically connecting the member and the resin bracket, (d) forming a liquid chamber inwardly a tubular shape, said one of the axial liquid chamber in a state to be closed with body rubber portion a cylindrical metal member for connecting the elastic body and the resin bracket, closes the axial direction of the other (e) said liquid chamber, and a lid with a rubber diaphragm, incorporated (f) said liquid chamber is by a partition member partitioning the liquid chamber into a first liquid chamber and the second liquid chamber, (g) a resin bracket comprising comprising an orifice passage, a for communicating the first fluid chamber and the second liquid chamber in per-liquid seal antivibration device, the lid is no to have the fitting portion forming the annular shape along the outer periphery of the diaphragm, The diaphragm is integrally vulcanized and bonded to the bracket, and the cylindrical bracket having a caulked portion at the tip is vulcanized and bonded to the lid, so that the lid and the cylindrical bracket are integrated. And an integrally vulcanized product, and the resin bracket is integrally molded with the integrally vulcanized product to form a pre-assembled product. The pre-assembled product is composed of (a) the cylindrical bracket and the resin bracket. A flange portion that is radially outward at a position that protrudes a predetermined height in the axial direction and forms an insertion space for a receiving tool that receives a caulking force in the caulking process between the protruding end and the resin bracket. Form and (b) a flat support surface in which the metal fitting part exposes a lower surface opposite to the caulking part over a predetermined width and the exposed part is supported by a support jig during the caulking process. As at least one of the forms Characterized by being configured by assembling the mount body and the pre assembly parts consisting of integrally vulcanized product of the mounting member and the elastic body to each other.

Of those claims 2, in claim 1, with each other to form as said cylindrical fitting having a flange portion, said caulked portion Following the flange portion is provided, also the outer periphery of the mounting body The bracket is provided with a caulking fixing metal fitting, and the caulking portion of the cylindrical metal fitting is caulked to the caulking fixing metal fitting so that the preliminary assembly and the mount body are assembled together. It is characterized by.

  According to a third aspect of the present invention, in the second aspect, the caulking fixing metal fitting forms a sleeve, is integrally vulcanized and bonded to the main body rubber portion, and an axial end portion on the caulking portion side has a diameter. A flange portion that is outward in the direction is formed, and a caulking portion of the cylindrical metal fitting is caulked to the flange portion.

  According to a fourth aspect of the present invention, in the third aspect, the caulking fixing metal fitting forming the sleeve extends in the axial direction along the inner surface of the cylindrical metal fitting, and at an end opposite to the caulking portion. The partition member is pressed.

Effects and effects of the invention

  As described above, the present invention does not form a resin bracket integrally with a mount body having a main body rubber portion to form a pre-assembled product, but instead of an integrated vulcanized product of a lid and a cylindrical metal fitting. A resin bracket is integrally molded to form a pre-assembled product, and a mount body made of an integrated vulcanized product of the main body rubber part and mounting member is assembled to this pre-assembled product to constitute a liquid seal vibration isolator with a resin bracket. It was made like that.

In the present invention, the shape of the main rubber part varies depending on the difference in vehicle performance, that is, the difference in the vibration-proof performance required for the vibration-proof device. Even if the required anti-vibration performance is different, many have been made paying attention to the fact that they can be used in common.
More specifically, as long as the shape of the main rubber portion is similar, the same lid can be used (when the resin bracket is molded on the main rubber portion side, the shape of the main rubber portion is This requires attention to the point that a separate molding die is required even if it is slightly different.

  According to the present invention, even when the shape of the main rubber part varies depending on the vehicle performance, the mold for molding the resin bracket can be made common, thereby manufacturing the liquid seal vibration isolator with the resin bracket. Cost can be reduced.

In the present invention, the cylindrical metal fitting on the lid side is protruded in the axial direction from the resin bracket, and the radial direction is formed at the position where the insertion space of the receiving device receiving the caulking force is formed between the protruding end and the resin bracket. You can leave provided a flange portion outward, when crimped caulking portion of the cylindrical metal member by leave without thus mount the body, crimping device into the insertion space between the flange portion and the resin bracket Thus, it is possible to receive the caulking force from the caulking device at the cylindrical metal fitting itself and at the flange portion.
In addition, a flat support surface can be formed on the ring-shaped metal fitting provided on the lid, and by doing so, the flat support surface is supported by a support jig during caulking. can do.

Therefore, in this liquid seal vibration isolator of the present invention , the caulking force at the time of caulking processing acts on the resin bracket, and a large distortion occurs in the resin bracket. Can be prevented well.

In the present invention, a caulking fixing metal fitting is provided on the outer peripheral portion of the mount main body, and the caulking portion provided subsequent to the flange portion of the cylindrical metal fitting is caulked to the caulking fixing metal fitting. (Claim 2).

  In this case, the sleeve metal fitting is integrally vulcanized and bonded to the main rubber part to form a metal fitting for caulking, and the axial end of the sleeve metal fitting serves as a radially outward flange. On the other hand, the caulking portion of the cylindrical metal fitting can be caulked (claim 3).

Furthermore, in this case, the sleeve fitting can be extended in the axial direction along the inner surface of the cylindrical fitting, and the partition member can be pressed at the end opposite to the caulking portion ( Claim 4).
By doing so, it is possible to satisfactorily prevent the partition member from moving in the liquid chamber due to the elastic deformation of the main rubber part.

Next, embodiments of the present invention will be described in detail with reference to the drawings.
In FIG. 1, 10 is a liquid seal vibration isolator with a resin bracket (hereinafter simply referred to as a liquid seal vibration isolator) of this embodiment used as an engine mount or the like, and is attached and fixed to one of a support member and a supported member. The mounting bracket 12, the resin bracket 14 fixed to the other, the main body rubber portion 18 that elastically connects the mounting bracket 12 and the resin bracket 14, and a liquid chamber is formed on the inner side in a cylindrical shape. A cylindrical metal fitting 16 that connects the main rubber part 18 and the resin bracket 14 in a state in which one of the directions is closed by the main rubber part 18, and a rubber diaphragm 20 that closes the other axial direction of the liquid chamber. The lid body 22 includes a rigid partition member 28 that is incorporated in the liquid chamber and divides the liquid chamber into a first liquid chamber 24 and a second liquid chamber 26.
Here, a substantially annular orifice passage 30 is formed in the partition member 28.
The orifice passage 30 communicates with the first liquid chamber 24 at the opening 32 and communicates with the second liquid chamber 26 at the opening 34.

In this liquid seal vibration isolator 10, the liquid sealed in the first liquid chamber 24 and the second liquid chamber 26 moves from one side to the other and from the other side through the orifice passage 30, and based on the flow of the liquid. To damp vibration.
Here, the main body rubber portion 18 has a rubber leg 36 that expands downward in the figure in a cross-sectional shape, and a first liquid chamber 24 is formed on the inner side (lower side) of the rubber leg 36. Yes.
A metal fitting 40 having a fixing hole 38 is integrally fixed to the resin bracket 14.

2 and 3 show a state before the liquid seal vibration isolator 10 is assembled. As shown in FIG. 2, the liquid seal vibration isolator 10 is an integrally vulcanized product having a main body rubber portion 18. The mount body 42 and the preliminary assembly 44 having the resin bracket 14 are integrally assembled together with the partition member 28 by caulking.
Normally, this assembly is performed in a liquid, and the liquid is sealed in the liquid chamber by the assembly.
However, it is also possible to enclose the liquid in the liquid chamber after assembly.

The mount main body 42 has a sleeve metal fitting 46 as a caulking fixing metal fitting on the outer peripheral portion, and the outer peripheral surface of the main rubber portion 18 is integrally vulcanized and bonded to the sleeve metal fitting 46.
A radially outward flange portion 48 is formed at the upper end portion of the sleeve metal fitting 46, and the caulking portion 60 of the cylindrical metal fitting 16 is caulked and fixed to the flange portion 48 as will be described later.
The main rubber part 18 has a cylindrical rubber peripheral wall 50 extending downward in the figure along the inner surface of the sleeve metal fitting 46.

The preliminary assembly 44 is obtained by integrally molding the resin bracket 14 with respect to the lid body 22 and the cylindrical metal fitting 16.
Here, the resin bracket 14 includes a cylindrical portion 52 that surrounds the lower portion of the cylindrical metal fitting 16 and a flat plate-like fixing portion 54 that is bent at a right angle from the lower end thereof.

The lid 22 has a metal part 56 that forms a donut shape along the outer periphery of the diaphragm 20, and the diaphragm 20 is integrally vulcanized and bonded to the metal part 56.
Here, the metal part 56 is configured integrally with the cylindrical metal part 16.
The lower surface of the metal fitting 56 is exposed over a predetermined width L ₁ (L ₁ is preferably 5 mm or more).
This exposed surface forms a flat support surface 57 that is supported by a support jig during caulking.

Cylindrical metal fitting 16, in the drawing from a resin bracket 14 which upwardly protrudes a predetermined height L ₂ (L ₂ is preferably about 15 to 20 mm), and-out radially outer direction at end or the upper end portion of the protruding side A flange portion 58 is provided, and a caulking portion 60 is further provided following the flange portion 58.
Here, the caulking portion 60 forms an annular rising portion 60 </ b> A having a shape rising in the axial direction, that is, upward in the drawing, as shown in FIG. 2 before caulking.
Between this flange part 58 and the upper end of the resin bracket 14 in the figure, an insertion space for a receiving tool that receives a caulking force during caulking is formed.

A rubber film 62 is integrally vulcanized and bonded to the outer peripheral surface of the lower part of the cylindrical metal fitting 16 and the outer peripheral part of the metal fitting part 56 in the lid body 22, and the outer peripheral parts of the cylindrical metal fitting 16 and the metal fitting part 56 are rubber. It is fixed to the resin bracket 14 through the film 62.
That is, the rubber film 62 is interposed at the contact portion between the cylindrical metal fitting 16 and the donut-shaped metal fitting 56 and the resin bracket 14.

A rubber film 64 is also integrally vulcanized and bonded to the cylindrical metal fitting 16 on the inner peripheral side thereof.
Here, the rubber film 64 on the inner peripheral side is provided so as to cover the entire inner peripheral surface of the portion below the flange portion 58 in detail over the entire axial length of the cylindrical metal fitting 16.
The inner peripheral rubber film 64 is integrally formed with the diaphragm 20.
A stepped portion 66 is formed in the vicinity of the upper end of the cylindrical metal fitting 16, and a portion above the stepped portion 66 is a large diameter portion 68, and the rubber film 64 has an inner portion of the large diameter portion 68. The portion is a thick portion 70 that is partially thick. The reason why such a thick portion 70 is provided is to secure a reliable seal by increasing the rubber volume of the rubber film 64 in the vicinity of the caulking portion 60 in FIG.

The liquid seal vibration isolator 10 of the present embodiment is configured by assembling the preliminary assembly 44 and the mount body 42 together with the partition member 28 by caulking.
4 and 5 show the caulking process.
In this caulking process, as shown in FIG. 4, the support surface 57 provided on the lid body 22 is supported by a support jig 69, and between the flange portion 58 and the resin bracket 14 in the cylindrical metal fitting 16. The receiving device 71 of the caulking device is inserted into the formed insertion space K, and the flange portion 58 is received by the receiving device 71 from the lower side in the figure.
Then, in this state, as shown in FIG. 5 (II), the annular rising portion 60A is first bent obliquely by the first caulking tool 72-1 in the caulking device.

Subsequently, as shown in FIG. 5 (III), the inclined portion 60B is horizontally moved by another second caulking tool 72-2 while the flange portion 58 is similarly received by the receiving tool 71 from the lower side in the figure. Then, the flange portion 48 of the sleeve metal fitting 46 of the mount body 42 is sandwiched in the axial direction by the caulking portion 60 together with the flange portion 58.
Here, the caulking process of the tip end portion of the cylindrical metal fitting 16 is completed, and the mount main body 42 and the preliminary assembly 44 are caulked and fixed to be structurally integrated (FIG. 5 (IV)).

FIG. 6 shows a molding method of the resin bracket 14 together with a molding die.
In the figure, reference numeral 72 denotes a mold for molding the resin bracket 14 and includes an upper mold 72A, an intermediate mold 72B, and a lower mold 72C.
A cavity 73 is formed in the mold 72, and the resin bracket 14 is molded by injecting and solidifying a resin material therein.
Specifically, the metal bracket 40 having the lid 22, the cylindrical metal fitting 16 and the fixing hole 38 is set in the mold 72, and the resin material is injected into the cavity 73 and molded, whereby the resin bracket 14 is covered. The body 22 and the cylindrical fitting 16 are molded and integrated. Here, the preliminary assembly 44 shown in FIG. 2 is obtained.
The upper die 72 </ b> A has a convex portion 74 that fits inside the cylindrical metal fitting 16.
The convex portion 74 does not reach the lower end of the cylindrical metal fitting 16, and a space 76 is formed below the convex portion 74.

  According to the present embodiment as described above, even if the shape of the main rubber portion 18 is different due to the difference in vehicle performance, the preliminary assembly 44 formed by integrally molding the resin bracket 14 with respect to the lid 22 is shared. Therefore, the mold 72 for molding the resin bracket 14 can be used in common, and the manufacturing cost of the liquid seal vibration isolator 10 with the resin bracket can be reduced. .

  Further, when the caulking portion 60 of the cylindrical metal fitting 16 is caulked to the mount body 42, the caulking device support 71 is inserted into the insertion space K between the flange portion 48 and the resin bracket 14, and the cylindrical metal fitting 16 itself. Further, the caulking force from the caulking device can be received at the flange portion 48, and accordingly, the caulking force at the time of the caulking process acts on the resin bracket 14, and a large distortion is generated in the resin bracket 14. It can prevent well that a crack generate | occur | produces or a crack arises.

  Further, the sleeve metal fitting 46 of the main rubber part 18 is used as a caulking fixing metal fitting, and the partition member 28 is pressed by the lower end part of the sleeve metal fitting 46 in the figure, so that the main rubber part 18 is elastically deformed. Accordingly, it is possible to favorably prevent the partition member 28 from moving in the liquid chamber.

FIG. 7 shows another embodiment of the present invention.
In this embodiment, the height of H ₂ the elastic body 18 in the mount main body 42 is of slightly higher compared to the height H ₁ of the elastic body 42 of the above embodiment, the embodiment for other points It is the same as the form.
That is, the lid 22 having the diaphragm 20, the cylindrical metal fitting 16, and the resin bracket 14 are all the same, that is, the spare assembly 44 formed by assembling them is common to the above embodiment.

  In the conventional liquid seal vibration isolator with a resin bracket, the lid 22 having the diaphragm 20 and the resin bracket 14 have the same shape, but the resin bracket 14 for molding the resin bracket 14 of the above embodiment is used as a molding die. Although a different type of mold from the mold is necessary, according to the present embodiment, a common mold can be used as a mold for molding the resin bracket 14.

8 to 10 show still another embodiment of the present invention.
In this embodiment, as shown in FIG. 8, a third liquid chamber 77 and a fourth liquid chamber 78 are formed inside the main rubber portion 18, and these are formed in an orifice passage 82 formed in the orifice fitting 80. They are in communication with each other.
Here, the orifice passage 82 communicates with the third liquid chamber 77 through the opening 84 shown in FIG. 10, and also communicates with the fourth liquid chamber 78 through the opening 86 in FIG.

In this embodiment, when the mounting bracket 12 relatively moves in the right direction in the figure, the liquid in the third liquid chamber 77 flows into the fourth liquid chamber 78 through the orifice passage 82 and moves relatively in the opposite direction. The liquid in the fourth liquid chamber 78 flows into the third liquid chamber 77 through the orifice passage 82 and performs a vibration damping action in the horizontal direction in FIG. 8 based on the flow at that time.
Here, the movement of the liquid from the third liquid chamber 77 to the fourth liquid chamber 78 is such that the liquid in the third liquid chamber 77 flowing into the orifice passage 82 from the opening 84 in FIG. 10 flows to the left in FIG. 10, then reaches the circumferential passage 82C via the turn-back passage 82B in FIG. 10C, and further flows in the circumferential passage 82C rightward in FIG. 10C. From the circumferential passage 82 </ b> D into the fourth liquid chamber 78 through the opening 86.
The reverse flow is in the opposite direction.

The orifice fitting 80 is separate from the main rubber portion 18, and an annular fitting 90 for fixing the caulking at the upper end of the main rubber portion 18 protrudes radially outward in a flange shape. The caulking portion 60 of the cylindrical metal fitting 16 is caulked against the caulking fixing metal fitting 90.
Further, another cylindrical metal fitting 92 is integrally vulcanized and bonded to the lower end portion and the outer peripheral portion of the main rubber portion 18 in the same manner as the caulking fixing metal fitting 90, and the cylindrical metal fitting 92 is cylindrical. The rubber film 64 on the inner peripheral surface of the metal fitting 16 is in contact with the inner peripheral surface of the cylindrical metal fitting 16, and the lower end thereof is in contact with the partition member 28.

Also in this embodiment, the preliminary assembly 44 in the above embodiment is used in common.
Therefore, in this embodiment as well, a common mold can be used as a mold for molding the resin bracket 14 although the shape of the main rubber portion 18 is different from the shape of the above embodiment.
In the above embodiment, the rubber film 62 covering the lower and outer peripheral surface of the cylindrical metal fitting 16 has the same height as the upper end of the cylindrical portion 52 of the resin bracket 14, but as shown in FIG. The upper end of the rubber film 62 in the figure can protrude upward from the upper end of the cylindrical portion 52 of the resin bracket 14 in the figure.

For example, when the upper end of the rubber film 62 and the upper end of the cylindrical portion 52 of the resin bracket 14 are at the same height, that is, the same position, when a gap is generated between the middle mold 72B and the cylindrical metal fitting 16 in FIG. When the resin bracket 14 is molded, the resin material protrudes into the gap to form a resin burr, and then the resin burr is peeled off, so that water may enter from there.
However, if the rubber film 62 protrudes from the cylindrical portion 52 of the resin bracket, the middle mold 72B in the mold 72 is pressed against the protruding portion of the rubber film 62 as shown in FIG. Thus, a gap can be prevented from occurring there, and therefore, the problem that a part of the resin enters the gap and remains as a resin burr when the resin material is injected into the cavity 73 can be solved.
Therefore, it is possible to reliably eliminate the possibility that the resin burr will peel off later and water may enter from there.

  Although the embodiments of the present invention have been described in detail above, these are merely examples, and the present invention can be configured in various modifications without departing from the spirit of the present invention.

It is sectional drawing which shows the liquid seal vibration isolator with a resin bracket of one Embodiment of this invention in an assembly | attachment state. It is sectional drawing shown in the state before assembling the liquid seal vibration isolator of the embodiment. It is a perspective view shown in the state before assembling the liquid seal vibration isolator of the embodiment. It is explanatory drawing which shows the principal part process of the assembly | attachment of the liquid seal vibration isolator of the embodiment. It is explanatory drawing which shows the principal part process following FIG. It is a figure which shows the shaping | molding method of the resin bracket in the embodiment with the metal mold | die for shaping | molding. It is sectional drawing which shows other embodiment of this invention. It is sectional drawing which shows other embodiment of this invention. It is sectional drawing which shows the embodiment of FIG. 8 in the state before an assembly | attachment. It is a figure which shows the orifice metal fitting in FIG.8 and FIG.9. It is a figure which shows the principal part of other embodiment of this invention with a shaping | molding method. It is a figure which shows the example of the liquid sealing vibration isolator with a conventionally well-known resin bracket. It is a figure which shows the molding method of the resin bracket of the liquid seal vibration isolator of FIG. 12 with the metal mold | die for shaping | molding.

DESCRIPTION OF SYMBOLS 10 Liquid seal vibration isolator 12 Mounting bracket 14 Resin bracket 16 Cylindrical bracket 18 Main body rubber part 20 Diaphragm 22 Lid body 24 1st liquid chamber 26 2nd liquid chamber 28 Partition member 30 Orifice passage 42 Mount main body 44 Preliminary assembly 46 Sleeve fitting 48 Flange part 60 Caulking part 71 Receptacle

Claims (4)

(a) a rigid attachment member that is fixedly attached to one of the support member and the supported member ;
(b) a resin bracket attached and fixed to the other ;
(c) a main rubber part for elastically connecting the mounting member and the resin bracket ;
(d) a cylindrical fitting that forms a cylindrical shape and forms a liquid chamber inside, and connects the main body rubber portion and the resin bracket so that one axial direction of the liquid chamber is closed by the main body rubber portion; ,
(e) a lid provided with a rubber diaphragm that closes the other of the liquid chambers in the axial direction ;
(f) a partition member incorporated in the liquid chamber and dividing the liquid chamber into a first liquid chamber and a second liquid chamber ;
(g) an orifice passage for communicating the first liquid chamber and the second liquid chamber ;
In a liquid seal vibration isolator with a resin bracket comprising :
The lid body has a metal part that forms an annular shape along the outer peripheral part of the diaphragm, and the diaphragm is integrally vulcanized and bonded to the metal part, and further, the tip part is attached to the lid body. The cylindrical fitting having a caulking portion is integrally vulcanized and bonded, and the lid body and the cylindrical fitting are formed as an integrally vulcanized product, and the resin bracket is integrally molded with the integrated vulcanized product. With and without spare assembly,
The preliminary assembly includes: (a) the cylindrical bracket projects a predetermined height in the axial direction from the resin bracket, and receives a caulking force during caulking between the protruding end and the resin bracket. A form having a radially outward flange portion at a position where the insertion space for the support is formed, and (b) the metal fitting portion exposes a lower surface opposite to the caulking portion over a predetermined width and an exposed portion. Comprising at least one of a form having a flat support surface supported by a support jig during the caulking process, and comprising an integrally vulcanized product of the main body rubber part and the mounting member A liquid seal vibration isolator with a resin bracket, wherein the mount main body and the preliminary assembly are assembled to each other. In Claim 1, the said cylindrical metal fitting shall have the said flange part, The said caulking part is provided following this flange part , and it is for caulking fixation on the outer peripheral part of the said mount main body. A fitting is provided, and the pre-assembled product and the mount body are integrally assembled by caulking the caulking portion of the cylindrical fitting to the caulking fixing fitting. Liquid seal vibration isolator with resin bracket.   3. The caulking fixing metal fitting forms a sleeve, and is integrally vulcanized and bonded to the main body rubber portion. The caulking portion side axial end portion has a radially outward flange portion. A liquid seal vibration isolator with a resin bracket, wherein the caulking portion of the cylindrical metal fitting is caulked to the flange portion.   4. The caulking fixing metal fitting forming the sleeve extends in an axial direction along an inner surface of the cylindrical metal fitting, and presses the partition member at an end opposite to the caulking portion. A liquid seal vibration isolator with a resin bracket.

Images