JPH10252811A - Liquid-filled cylindrical mounting device - Google Patents

Abstract

(57) [Summary] [Problem] To provide a liquid-filled cylindrical mounting device that can reduce man-hours and cost. Kind Code: A1 A spindle metal fitting, a pair of ring parts (not shown) disposed coaxially outside the spindle metal fitting and located at both ends in the axial direction, and four bridges bridging between the two ring parts. Part 2
3a to 23d, an intermediate metal fitting 2 integrally connected to the intermediate metal fitting 2 and the spindle metal fitting 1, a rubber seal portion 31 fixed to the outer periphery of the intermediate metal fitting 2, and a concave portion 32 opened on both sides in the main vibration input direction. , 33 and a rubber elastic body 3, which is disposed coaxially outside the rubber seal portion 31 and has concave portions 32, 33.
And a mounting member 4 having a cylindrical portion 41 forming a main liquid chamber 45 and a sub liquid chamber 46 which communicate with each other via an orifice passage 34, and is integrally vulcanized with the main shaft fitting 1 and the intermediate metal fitting 2. The mounting member 4 is fitted and fixed so that the inner peripheral surface of the cylindrical portion 41 directly adheres to the outer peripheral surface of only the portion corresponding to the rubber seal portion 31 of the vulcanized molded body of the molded rubber elastic body 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid-filled cylindrical mount device used as, for example, an engine mount or a cab mount of an automobile.

[0002]

2. Description of the Related Art FIGS. 4 and 5 show a conventional liquid-filled cylindrical mounting device. The liquid-filled cylindrical mounting device includes a spindle metal fitting 101, a pair of ring portions (not shown) disposed at the outside of the spindle metal fitting 101, coaxially and spaced apart from each other in the axial direction, and both rings. An intermediate metal fitting 102 having two bridging portions 123 that bridges between the portions and partitions two windows 122 arranged in the circumferential direction together with the ring portion, and the intermediate metal fitting 102 and the spindle metal fitting 101 are integrally connected. And two recesses 1 opening in the window 122
A rubber elastic body 103 having 32, 133;
The main liquid chamber is disposed coaxially outside the liquid crystal 02, and the openings of the concave portions 132 and 133 are liquid-tightly closed, and the liquid L is sealed between the concave portions 132 and 133 and communicates with each other through the orifice passage 134. 145 and an outer cylinder fitting 146 forming an auxiliary liquid chamber 146; a cylindrical portion 151 fitted to the outside of the outer cylinder fitting 104; and an attached portion 152 welded and fixed to the outer periphery of the cylindrical portion 151. Attachment member 105, spindle fitting 101
, One end of which is fixed to the main liquid chamber 145, and a stopper member 106 that regulates a relative displacement of the main spindle metal fitting 101 and the outer cylindrical metal fitting 104 beyond a predetermined value.

In this liquid-filled cylindrical mount device, for example, a main shaft bracket 101 is connected to a support member on the vehicle body side, and a mounting portion 152 of a mounting member 105 is connected to a support member on the engine side. The main liquid chamber 145 and the sub liquid chamber 146 are arranged so as to be located in the vertical direction which is the vibration input direction. Then, the spindle metal fitting 101 and the mounting member 1
When vibration occurs between the liquid L. 05 and the liquid L, the vibration is effectively attenuated by the elastic action of the rubber elastic body 103 and the liquid column resonance action of the liquid L flowing through the orifice passage 134.

[0004] The liquid-filled cylindrical mounting device is manufactured as follows. First, the rubber elastic body 1
In the vulcanization mold for forming No. 03, a spindle metal fitting 101 and an intermediate metal fitting 102 separately manufactured in a predetermined shape are arranged, and a rubber material mixed with a vulcanizing agent or the like is injected and vulcanized and molded. As a result, a vulcanized molded body of the rubber elastic body 103 integrated with the spindle metal fitting 101 and the intermediate metal fitting 102 is formed.

[0005] Next, the vulcanized molded body is immersed in a liquid tank filled with the liquid L to be sealed in the main liquid chamber 145 and the sub liquid chamber 146, and in this state, the outer cylindrical metal fitting 10 is placed outside the intermediate metal fitting 102.
Then, the outer cylinder fitting 104 is drawn and fixed. Thus, the liquid L is sealed in the main liquid chamber 145 and the sub liquid chamber 146. After that, the integrated vulcanized molded body and the outer cylinder fitting 104 are taken out of the liquid tank, and this is attached to the mounting member 1.
05 into the cylindrical portion 151. Thus, the liquid-filled cylindrical mount device is completed.

[0006]

By the way, in the above-mentioned conventional liquid-filled cylindrical mounting device, the outer cylinder fitting 104 is press-fitted into the cylindrical portion 151 of the mounting member 105, and these are usually iron. Since it is formed of metal such as aluminum or aluminum, high dimensional accuracy is required. Therefore, a large number of man-hours are required to improve the inner diameter dimensional accuracy of the cylindrical portion 151 of the mounting member 105, and there is a problem that the cost is increased.

The present invention has been devised in view of the above-mentioned problems, and has as an object to solve the problem of providing a liquid-filled cylindrical mount device capable of reducing man-hours and cost. is there.

[0008]

According to a first aspect of the present invention, there is provided a main shaft and a pair of shafts which are coaxially disposed outside the main shaft and spaced apart from each other and located at both ends in the axial direction. And an intermediate metal fitting comprising four ring portions and four bridging portions provided at both sides in the radial direction of the main vibration input direction in the radial direction and at both side positions in the radial direction substantially orthogonal to the main vibration direction. A substantially cylindrical rubber elastic body which integrally connects the intermediate metal fitting and the main shaft metal fitting, and has a rubber seal portion fixed to the outer periphery of the intermediate metal fitting and concave portions opened on both sides in the main vibration input direction. A main liquid chamber which is disposed coaxially outside the intermediate fitting via the rubber seal portion, closes an opening of the concave portion in a liquid-tight manner, and communicates with the concave portion via an orifice passage. And a cylindrical portion forming the auxiliary liquid chamber and the cylindrical portion A mounting member having a mounted portion provided on the side, and a vulcanized molded body formed by integrally vulcanizing and forming the rubber elastic body together with the spindle metal fitting and the intermediate metal fitting, Means is employed in which the mounting member is fitted and fixed such that the inner peripheral surface of the cylindrical portion directly adheres to the outer peripheral surface of only the portion corresponding to the rubber seal portion of the vulcanized molded body.

The invention according to claim 2 is the invention according to claim 1.
The invention according to the above aspect, further comprising a stopper member having one end fixed to the spindle metal fitting and a distal end projecting into the main liquid chamber toward the bridging portion, and restricting a relative displacement of the spindle metal fitting and the cylindrical portion by a predetermined value or more. In addition, a means is employed in which the distal end surface of the stopper member is formed in a concave shape corresponding to the shape of the surface facing the stopper member.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. [Embodiment 1] FIG. 1 is a sectional view in a direction perpendicular to an axis of a liquid-filled cylindrical mounting device according to the present embodiment, and FIG. FIG.

The liquid-filled cylindrical mounting device of the present embodiment comprises a main shaft 1, a pair of ring portions (not shown) which are disposed outside the main shaft 1 and are coaxial with each other, and four bridges. An intermediate metal fitting 2 having portions 23a to 23d, a substantially cylindrical rubber elastic body 3 integrally connecting the intermediate metal fitting 2 and the spindle metal fitting 1 and having a rubber seal portion 31 and a pair of concave portions 32 and 33;
A cylindrical portion which is coaxially disposed outside the intermediate metal fitting 2 via a rubber seal portion 31 and forms a main liquid chamber 45 and a sub liquid chamber 46 which communicate with each other via an orifice passage 34 between the concave portions 32 and 33. The main components are a mounting member 4 having a main body 41 and a stopper member 5 having one end fixed to the main spindle 1 and a front end projecting into the main liquid chamber 45.

The spindle fitting 1 is formed in a pipe shape from metal. The intermediate fitting 2 has a pair of ring portions located at both ends in the axial direction, and four bridge portions 23 a to 4 bridging between the two ring portions and defining four windows 22 arranged in the circumferential direction together with the ring portions. 23d. Four bridge portions 23a
23d are provided at four positions on both sides in the main vibration input direction in the radial direction and on both sides in the radial direction substantially orthogonal to the main vibration direction.

The rubber elastic body 3 includes a main shaft 1 and an intermediate metal 2.
And a stopper member 5 described later, which is integrally vulcanized to integrally connect the main shaft 1 and the intermediate metal 2. The intermediate metal fitting 2 is embedded in the rubber elastic body 3, and a portion of the rubber elastic body 3 fixed to the outer periphery of the intermediate metal fitting 2 forms a rubber seal portion 31. On the outer peripheral surface of the rubber elastic body 3, a pair of concave portions 32, 33 opened on both sides in the main vibration input direction to form a main liquid chamber 45 and a sub liquid chamber 46 described later.
And the orifice passage 34 communicating the main liquid chamber 45 and the sub liquid chamber 46 are formed.

A portion of the rubber elastic body 3 between the main shaft fitting 1 and the concave portion 33 on the side of the auxiliary liquid chamber 46 is provided with a hollow portion 35 penetrating along the axial direction.
A part of the rubber elastic body 3 is thinned in a portion between the first elastic member 3 and the concave portion 33 so as to form a partition wall of the sub liquid chamber 46.
Are formed. In the center of the diaphragm 36, one bridge portion 23b of the intermediate fitting 2 is embedded. In addition, the main shaft 1 and the bridge 2 in the diaphragm 36
3b, a rubber stopper 37 protruding toward the bridge portion 23b is provided.

The mounting member 4 has a cylindrical portion 41 formed of metal in a cylindrical shape, and a mounting hole 41a through which mounting bolts (not shown) are welded and fixed to the outer peripheral surface of the cylindrical portion 41. And an attachment portion 42. The mounting member 4 is fitted by press-fitting the cylindrical portion 41 to the outside of the rubber elastic body 3, and the inner peripheral surface of the cylindrical portion 41 directly adheres to the outer peripheral surface of only the rubber seal portion 31 of the rubber elastic body 3. The state is fixed. As a result, the recesses 32 and 33 of the rubber elastic body 3 and the opening of the orifice passage 34 are closed in a liquid-tight manner.
A main liquid chamber 45 and a sub liquid chamber 46 communicating with each other via an orifice passage 34 are formed between the main liquid chambers 2 and 33.

The main liquid chamber 45 and the sub liquid chamber 46 are filled with a liquid L made of an incompressible fluid such as water, alkylene glycol, or silicone oil. The stopper member 5 includes a ring portion 5 fitted to the outer peripheral surface of the spindle bracket 1.
1 and a first projecting from the outer periphery of the ring portion 51 toward the bridge portion 23a into the main liquid chamber 45 and having a substantially Y-shaped cross section.
A stopper 52 and a second stopper 53 projecting from the outer periphery of the ring portion 51 toward the bridging portion 23b on the side opposite to the first stopper 52, and regulates a relative displacement of the main spindle 1 and the mounting member 4 of a predetermined value or more. Is what you do. The stopper member 5 is buried inside the rubber elastic body 3, and the rubber elastic body 3 at a portion covering the distal end surfaces of the first stopper 52 and the second stopper 53 constitutes cushion rubber portions 38 and 39.
The distal end surface of the first stopper 52 is formed in a concave shape corresponding to the surface shape of the rubber elastic body 3 in which the bridge portion 23a is buried and opposed to the first stopper 52.

The liquid-filled cylindrical mount device of the present embodiment having the above-described structure is manufactured as follows. First, a spindle metal fitting 1, an intermediate metal fitting 2, and a stopper member 5 separately formed into a predetermined shape are arranged in a vulcanization mold for forming a rubber elastic body 3, and a rubber material mixed with a vulcanizing agent or the like is injected. Vulcanization molding. As a result, a vulcanized molded body of the rubber elastic body 3 integrated with the spindle metal fitting 1, the intermediate metal fitting 2, and the stopper member 5 is formed.

Next, the vulcanized molded body and the mounting member 4 are immersed in a liquid tank filled with the liquid L to be sealed in the main liquid chamber 45 and the sub liquid chamber 46, and the cylindrical shape of the mounting member 4 is changed. The vulcanized molded body is pressed into the portion 41 and fitted. As a result, the mounting member 4 is fixed in a state where the inner peripheral surface of the tubular portion 41 is in direct contact with the outer peripheral surface of only the portion corresponding to the rubber seal portion 31 of the rubber elastic body 3 on the outer peripheral portion of the vulcanized molded body. The liquid L is sealed in the liquid chamber 45 and the sub liquid chamber 46.

Thereafter, the assembled vulcanized molded body and the mounting member 4 are removed from the liquid tank and subjected to post-processing, whereby the liquid-filled cylindrical mounting device of the present embodiment is completed. In the liquid-filled cylindrical mounting device of the present embodiment configured as described above, for example, the main shaft 1 is connected to the support member on the vehicle body side, and the mounting member 4 is attached to the support member on the engine side.
Are attached so that the main liquid chamber 45 and the sub liquid chamber 46 are positioned in the vertical direction which is the main vibration input direction of the engine.

When vibration occurs between the spindle metal fitting 1 and the mounting member 4, the vibration is effectively caused by the elastic action of the rubber elastic body 3 and the liquid column resonance action of the liquid L flowing through the orifice passage 34. Attenuated. When excessive vibration occurs between the spindle metal fitting 1 and the mounting member 4, the tip end surface of the stopper member 5 is opposed to the stopper member 5 and abuts against the rubber elastic body 3 having the bridge portion 23a embedded therein. Excessive relative displacement between the spindle bracket 1 and the mounting member 4 is restricted. At this time, since the distal end surface of the stopper member 5 is formed in a concave shape corresponding to the surface shape of the rubber elastic body 3, the surface pressure is dispersed, and the durability is improved.

As described above, in the liquid-filled cylindrical mounting device of the present embodiment, the inner peripheral surface of the cylindrical portion 41 is in direct contact with the outer peripheral surface of only the portion corresponding to the rubber seal portion 31 of the rubber elastic body 3. Since the mounting member 4 is fitted and fixed as described above,
Since the dimensional variation of the cylindrical portion 41 can be absorbed by the rubber seal portion 31, it is possible to avoid the conventional requirement of high dimensional accuracy of the cylindrical portion 41. Therefore, the number of steps can be reduced, and the cost can be reduced.

Further, in the liquid-filled cylindrical mounting apparatus of the present embodiment, the conventionally used outer metal fittings can be eliminated, so that the number of assembling steps and the like can be simplified, thereby also reducing the cost. Can be reduced. Further, in the liquid-filled cylindrical mount device of the present embodiment, the bridge portions 23a to 23d of the intermediate fitting 2 are located at both sides in the main vibration input direction in the radial direction and both sides in the radial direction substantially orthogonal to the main vibration direction. The intermediate metal fittings 2
Is sufficiently rigid, pressure is applied when it is press-fitted into the cylindrical portion 41 of the mounting member 4 and the intermediate metal fitting 2
Can be prevented from being deformed.

The liquid-filled cylindrical mounting device of the present embodiment has a stopper member 5 having one end fixed to the spindle fitting 1 and having a tip projecting into the main liquid chamber 45 toward the bridge portion 23a. Since the distal end surface of the stopper member 5 is formed in a concave shape corresponding to the shape of the surface facing the stopper member 5, the surface pressure of the stopper member 5 can be dispersed and the durability can be improved.

In the liquid-filled cylindrical mounting device of the above embodiment, the rubber elastic body 3 is press-fitted into the cylindrical part 41 of the mounting member 4, and the rubber seal part 31 and the cylindrical part 4 of the rubber elastic body 3 are fitted.
The inner surface of the elastic member 3 is provided with a caulking portion which is bent inward at a substantially right angle at both ends of the cylindrical portion 41. It may be configured to seal with a part.

The rubber seal 3 on the outer periphery of the bridge 23b
The whole of 1 may be configured to be in close contact with the cylindrical portion 41 to separate the auxiliary liquid chamber 46 in the circumferential direction. [Embodiment 2] FIG. 3 is a cross-sectional view in a direction perpendicular to the axis of a vulcanized molded body constituting a liquid-filled cylindrical mounting device according to this embodiment.

The liquid-filled cylindrical mounting device of the present embodiment is different from that of the first embodiment in the structure of the vulcanized molded body fitted to the cylindrical portion of the mounting member. As shown in FIG. 3, the vulcanized molded body has an intermediate metal fitting 7, a rubber elastic body 8,
And the shape of the stopper member 10 is different, and the two first and second main liquid chambers 95a and 95b are located at both sides in the main vibration input direction.
And two first and second sub liquid chambers 96a and 96b are formed.

The intermediate metal fittings 7 have four bridging portions 7 provided at four positions on both sides in the main vibration input direction in the radial direction and on both sides in the radial direction substantially orthogonal to the main vibration direction.
3a to 73d. These bridge portions 73a to 73d
Is different from that of the first embodiment in that the width in the circumferential direction is appropriately changed for design reasons. The rubber elastic body 8 is formed by integral vulcanization molding together with the main shaft 6, the intermediate metal 7, and the stopper member 9, and integrally connects the main shaft 6 and the intermediate metal 7. The intermediate metal fitting 7 is embedded inside the rubber elastic body 8, and a portion of the rubber elastic body 8 fixed to the outer periphery of the intermediate metal fitting 2 forms a rubber seal portion 81.

On one side of the outer peripheral surface of the rubber elastic body 8 in the main vibration input direction, a first main liquid chamber 95a and a second main liquid chamber 95b are formed to open at a portion corresponding to the window 72 of the intermediate metal fitting 7. Two concave portions 82a and 82b are formed. On the other side of the outer peripheral surface of the rubber elastic body 8 in the main vibration input direction, a first sub-liquid chamber 96a and a second sub-liquid chamber 96b are formed to open at a portion corresponding to the window 72 of the intermediate metal fitting 7. Two recesses 83
a and 83b are formed.

A portion corresponding to the bridging portion 73c on the outer peripheral surface of the rubber elastic body 8 has a first main liquid chamber 95a and a first sub liquid chamber 96a.
And a second orifice passage 84b communicating with the second main liquid chamber 95b and the second sub liquid chamber 96b at a portion corresponding to the bridge portion 73d.
Are formed. Further, the bridge portion 73b of the rubber elastic body 8
The first sub liquid chamber 96a and the second sub liquid chamber 96b
A third orifice passage 84c is formed to communicate with the second orifice.

Then, the main shaft 6 of the rubber elastic body 8 and the first
And concave portions 83a, 83b on the side of the second sub liquid chambers 96a, 96b.
And a hollow portion 85 penetrating along the axial direction.
Is provided. The hollow portion 85 and the concave portions 83a, 83
The first and second diaphragms 86a and 86b forming a partition of the first and second sub liquid chambers 96a and 96b are formed by thinning a part of the rubber elastic body 8 at a portion between the first and second sub liquid chambers 96a and 96b. I have. Further, the main shaft 6 of the rubber elastic body 8 and the bridging portion 73b
A rubber stopper 87 projecting toward the bridging portion 73b is provided at a portion between the two.

The stopper member 10 comprises a ring portion 11 fitted on the outer peripheral surface of the spindle metal fitting 6 and a stopper 13 projecting from the outer periphery of the ring portion 11 toward the bridge portion 73b. The difference is that there is no first stopper 52 in the member 5. The stopper member 10 is buried inside the rubber elastic body 8, and the rubber elastic body 8 at a portion covering the distal end surface of the stopper 13 forms a cushion rubber portion 89.

The vulcanized molded body constructed as described above is, similarly to the case of Embodiment 1 described above, placed in a vulcanized mold for forming the rubber elastic body 8 and separately formed into a spindle metal fitting 6 having a predetermined shape.
It is formed by arranging the intermediate fitting 7 and the stopper member 10, injecting a rubber material mixed with a vulcanizing agent and the like, and vulcanizing and molding. The liquid L to be sealed in the first and second main liquid chambers 95a and 95b and the first and second sub liquid chambers 96a and 96b.
Vulcanized molded article in a liquid tank filled with
Then, the vulcanized molded body is press-fitted into the tubular portion of the mounting member and fitted therein. Thereby, the mounting member is fixed in a state where the inner peripheral surface of the cylindrical portion is directly in close contact with the outer peripheral surface of only the portion corresponding to the rubber seal portion 81 of the rubber elastic body 8 on the outer peripheral portion of the vulcanized molded body. Second
Main liquid chambers 95a and 95b and first and second sub liquid chambers 96a and 9
The liquid L is sealed in 6b.

Thereafter, the assembled vulcanized molded body and the mounting member are removed from the liquid tank and subjected to post-processing, thereby completing the liquid-filled cylindrical mounting device of the present embodiment. The liquid-filled cylindrical mounting device of the present embodiment configured as described above has the same structure as the first embodiment, except that the spindle metal fitting 6 is provided.
And a mounting member connected to the support member on the vehicle body side and the support member on the engine side, and the first and second main liquid chambers 95a and 95b and the first and second sub liquids in the vertical direction which is the main vibration input direction of the engine. The chambers 96a and 96b are arranged so as to be located.

When vibration is generated between the spindle metal fitting 6 and the mounting member, the elastic action of the rubber elastic body 8 and the liquid column resonance of the liquid L flowing through the first to third orifice passages 84a, 84b, 84c. The action effectively dampens the vibration. As described above, also in the case of the liquid-filled cylindrical mount device of the present embodiment, the inner peripheral surface of the cylindrical portion is directly in close contact with the outer peripheral surface of only the portion corresponding to the rubber seal portion 81 of the rubber elastic body 8. Since the mounting member is fitted and fixed to the rubber member, the dimensional variation of the cylindrical portion can be absorbed by the rubber seal portion 81, so that the demand for the high dimensional accuracy of the conventional cylindrical portion can be avoided. Therefore, the number of steps can be reduced, and the cost can be reduced.

In the liquid-filled cylindrical mounting device of the present embodiment, the conventionally used outer metal fittings can be eliminated, so that the number of assembling steps and the like can be simplified, which also contributes to cost reduction. Can be reduced. Further, in the liquid-filled cylindrical mounting device of the present embodiment, the bridge portions 73a to 73d of the intermediate metal fitting 7 are located at both sides in the main vibration input direction in the radial direction and both sides in the radial direction substantially orthogonal to the main vibration direction. It is provided in four places,
Since sufficient rigidity is ensured, it is possible to prevent a problem that the intermediate fitting 7 is deformed due to pressure being applied when the fitting is pressed into the cylindrical portion of the mounting member.

The liquid-filled cylindrical mounting device of the present embodiment includes a first orifice passage 84a that connects the first main liquid chamber 95a and the first sub liquid chamber 96a, and a second main liquid chamber 95b.
Orifice passage 8 that communicates with the second sub-liquid chamber 96b
4b, and a third orifice passage 84c which communicates the first sub-liquid chamber 96a and the second sub-liquid chamber 96b. The first or third orifice passages 84a and 84b , 84c can be set to appropriate sizes, so that vibrations at three desired frequencies can be reduced, which is more advantageous than that of the first embodiment.

It should be noted that the first and second embodiments in the above embodiment are described.
The orifice passages 84a and 84b are formed by the outer peripheral surface of the rubber elastic body 8 and the inner peripheral surface of the cylindrical portion of the mounting member. As another method, for example, a separate orifice passage forming member is formed, and The orifice passage forming member may be mounted at an appropriate position.

[0038]

According to the first aspect of the present invention, a vulcanized molded article is formed by integrally vulcanizing and forming a rubber elastic body together with a spindle metal fitting and an intermediate metal fitting, and the rubber seal of the vulcanized molded article is formed. Since the mounting member is fitted and fixed so that the inner peripheral surface of the cylindrical portion directly adheres to the outer peripheral surface of only the portion corresponding to the portion, it is possible to avoid the conventional requirement of high dimensional accuracy of the cylindrical portion. As a result, the number of steps can be reduced and the cost can be reduced.

Further, since the conventionally used outer metal fittings can be eliminated, the number of assembling steps and the like can be simplified, and the cost can be reduced. In addition, the bridging portions of the intermediate fitting are provided at four positions on both sides in the radial direction of the main vibration input direction and on both sides in the radial direction substantially orthogonal to the main vibration direction, and sufficient rigidity of the intermediate fitting is ensured. Therefore, it is possible to prevent a problem that the intermediate fitting is deformed due to pressure being applied when the cylindrical portion of the mounting member is press-fitted.

According to the second aspect of the present invention, the end surface of the stopper member, one end of which is fixed to the spindle metal fitting and the end of which projects into the main liquid chamber toward the bridging portion, corresponds to the shape of the surface opposed thereto. As a result, the surface pressure of the stopper member is dispersed, and the durability can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view in a direction perpendicular to an axis of a liquid-filled cylindrical mounting device according to a first embodiment of the present invention.

FIG. 2 is a plan view with a part cut away of the liquid-filled cylindrical mounting device according to the first embodiment of the present invention.

FIG. 3 is a cross-sectional view in a direction perpendicular to an axis of a vulcanized molded body constituting a liquid-filled cylindrical mounting device according to a second embodiment of the present invention.

FIG. 4 is a cross-sectional view in a direction perpendicular to an axis of a conventional liquid-filled cylindrical mount device.

FIG. 5 is a plan view of a conventional liquid-filled cylindrical mount device.

[Description of Signs] 1, 6, 101: Spindle bracket 2, 7, 102: Intermediate bracket 3, 8, 103: Rubber elastic body 4, 105: Mounting member 5, 10, 106: Stopper member 22, 72, 1
22: Window portions 23a to 23d, 73a to 73d, 123: Bridge portions 31, 81: Rubber seal portions 32, 33, 82a, 82b, 83a, 83b, 13
2, 133 ... concave parts 34, 134 ... orifice passage 84a ... first orifice passage 84b ... second orifice passage 84c ... third orifice passage 35, 85 ... cavity 36 ... diaphragm 86a ... first diaphragm 86b ... second diaphragm 37, 87: rubber stopper 41: tubular part 4
2: attached part 45: main liquid chamber 95a: first main liquid chamber 95b
Second main liquid chamber 46 ... Sub liquid chamber 96a ... First sub liquid chamber 96b ...
2nd sub liquid chamber 11, 51 ... Ring part 13 ... Stopper 52
... First stopper 53 ... Second stopper 104 ... Outer cylinder L ...
liquid

Claims (2)

[Claims] 1. A main shaft input and a pair of ring portions disposed coaxially at a distance outside the main shaft and spaced apart from each other in the axial direction, and a main vibration input in a radial direction by bridging between the ring portions. And an intermediate metal part comprising bridge portions provided at four positions on both sides in a radial direction substantially orthogonal to the main vibration direction, and the intermediate metal part and the main shaft metal part. A substantially cylindrical rubber elastic body having a rubber seal portion fixed to the outer periphery of the intermediate fitting and concave portions opened on both sides in the main vibration input direction; and a coaxial shape outside the intermediate fitting via the rubber seal portion. A cylindrical portion which is disposed and forms a main liquid chamber and a sub liquid chamber communicating with each other through an orifice passage between the concave portion and a liquid-tightly closing an opening of the concave portion; An attachment member having an attached portion provided outside. The vulcanized molded body is formed by integrally vulcanizing and forming the rubber elastic body together with the spindle metal fitting and the intermediate metal fitting, and an outer peripheral surface of only a portion corresponding to the rubber seal portion of the vulcanized molded body. Wherein the mounting member is fitted and fixed such that an inner peripheral surface of the cylindrical portion is in direct contact with the cylindrical portion. 2. A stopper member, one end of which is fixed to the spindle metal fitting, the tip of which protrudes into the main liquid chamber toward the bridging portion, and regulates a relative displacement of the spindle metal fitting and the cylindrical portion by a predetermined value or more. 2. The liquid-filled cylindrical mounting device according to claim 1, wherein a distal end surface of the stopper member is formed in a concave shape corresponding to a shape of a surface facing the stopper member.