JPH08128491A - Liquid-seal type vibration control mount - Google Patents

Abstract

PURPOSE: To prevent the short circuit of an orifice flow passage by improving the close adhesion performance of a partitioning part, prevent the deterioration of the damping performance and facilitate assembly. CONSTITUTION: A liquid seal type vibration control mount is constituted of a body part 1, intermediate part 2, cover part 3 and a damper liquid 4 for the filling therebetween. Further, the outer peripheral surface of a partitioning wall 23 which partitions an orifice flow passage 300 which joins the first liquid chamber 100 between the body part and the intermediate part and the second liquid chamber 200 between the intermediate part and the cover part is formed as the slightly larger inclination surface, and the inner peripheral surface of the cover part 3 which makes contact with the inclination surface is formed to a funnel shape. When the body part, intermediate part and the cover part are assembled by caulking the caulked wall 122 of the body part, inside, a pressing force is generated naturally by the pressing in the axial and radial directions for the partitioning wall by the inner peripheral surface of the cover part, and the orifice flow passage can be surely partitioned by the partitioning wall.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid-filled anti-vibration mount, and more particularly to a liquid-filled anti-vibration mount suitable for use as an automobile engine mount.

[0002]

2. Description of the Related Art A conventional liquid-filled anti-vibration mount is disclosed in Japanese Utility Model Laid-Open No. 06-0549940. As shown in FIG. 11, the main body portion 7 is composed of a shaft metal fitting 71 that receives an external force and a first outer cylindrical metal fitting 73 that supports the shaft metal fitting 71 with an elastic member 72, and a second outer material that covers the open end of the main body portion 7. Tube fitting 9
1 and a diaphragm 92, a partition fitting 81 for partitioning between them, and a movable part 82 made of an elastic material.
And an intermediate portion 8 consisting of. Both outer cylinder fittings 73,
92 and the partition metal fitting 81 are watertightly joined by caulking a flange portion provided around them with a caulking portion 911.

A first liquid chamber 700 is formed between the main body portion 7 and the intermediate portion 8, and the intermediate portion 8 and the diaphragm 92 are formed.
A second liquid chamber 900 is formed between them and filled with the damper liquid. The liquid chambers 700 and 900 are communicated with each other by an orifice passage 800 having a substantially rectangular cross section provided between the partition fitting 81 and the second outer tubular fitting 91. That is, the orifice flow path 800 communicates with the second liquid chamber 900 and the first liquid chamber 700, respectively, via two communication holes (orifices) 83, 84 as shown in FIG. A part of the orifice flow path 800 (between the communication holes 83 and 84) is partitioned by, for example, a substantially rectangular partition wall 85 shown in FIG. 13, and the orifice flow path 800 connecting the communication holes 83 and 84 is The partition metal fitting 81 is provided so as to bypass the periphery thereof.

When the damper liquid flows between the liquid chambers 700 and 900 through the orifice flow path 800 as described above, the vibration component of the external force is attenuated (damping) and a vibration damping effect is exhibited.

[0005]

By the way, in such a liquid-filled anti-vibration mount, the damping performance thereof largely depends on the sealing property between the liquid chambers. That is, as a matter of course, the damper liquid does not leak to the outside of the liquid-filled anti-vibration mount, and it is necessary that the orifice flow path that connects the first liquid chamber and the second liquid chamber does not have a short circuit due to a seal leak. To this end, it is particularly important to improve the adhesion between the outer peripheral surface of the partition wall made of an elastic material attached to the partition fitting and the inner peripheral surface of the second outer tubular fitting so that seal leakage does not occur. Is.

However, in the conventional liquid-filled anti-vibration mount, the outer peripheral surface of the partition wall has a partial cylindrical shape perpendicular to the radial direction, and the inner peripheral surface of the second outer cylindrical metal fitting joined thereto is also cylindrical. Therefore, it was not possible to assemble with a sufficient bonding pressure. Therefore, liquid leakage from this partition portion may cause a short circuit in the orifice flow path, which may deteriorate the damping performance of the liquid-filled vibration isolation mount.

Further, as described above, since the outer peripheral surface of the partition wall has a partially cylindrical shape, it is necessary to assemble precisely so that the assembly position does not shift while applying the joining pressure to the central axis from one side. , The assembly work was not easy. Therefore, it is an object of the present invention to solve the problem of preventing the damping performance of the liquid-filled antivibration mount from being reduced by eliminating the short circuit of the orifice flow path due to a poor seal by increasing the adhesiveness of the partition part. In addition, it is also an object of the present invention to facilitate the assembly while ensuring the sealing property.

[0008]

In order to solve the above-mentioned problems, a liquid-filled anti-vibration mount of the present invention comprises a shaft fitting, a first flange portion at one end, and a cylindrical shape that rises from the outer peripheral end of the first flange portion. A first outer tubular metal member having a caulking wall,
A main body composed of the shaft metal fitting and an elastic member connecting the first outer cylinder metal fitting, a second flange part laminated on the first flange part and pressed by caulking, and an inner circumference of the second flange part. A partition fitting having an inner wall portion that is connected to an end and stands up in a cylindrical shape, a movable portion made of an elastic body that closes a hole defined by the inner wall portion, and a second flange portion that faces the first flange portion. A part of the orifice flow path is formed by the back surface and the outer peripheral surface of the inner wall portion connected to the back surface, and elasticity provided on the back surface of the second flange portion and a part of the outer peripheral surface of the inner wall portion. A partition wall that divides the orifice flow path formed of a body, and a pair of communication holes that are provided in the orifice flow path on both sides of the partition wall and are separated from each other, and form a first liquid chamber between the partition wall and the main body. The intermediate part to be formed and the second flange part are stacked and pressed by caulking. A third flange portion that contacts the end surface of the inner wall portion, and divides the second liquid chamber and the orifice flow path formed between the intermediate portion and the third flange portion; A second outer tubular metal member including a standing wall portion connecting the fourth flange portion and a lid portion including a diaphragm provided on the fourth flange portion, the first liquid chamber and the second liquid chamber.
In a liquid-filled antivibration mount having a damper liquid that fills a liquid chamber and the orifice flow path that communicates with both liquid chambers through both communication holes, the standing wall portion of the second outer tubular metal member is the third flange portion. To the fourth flange portion, the diameter thereof becomes smaller as it approaches the fourth flange portion, and the surface of the partition wall of the intermediate portion, which abuts against the standing wall portion, is an inclined surface having a size larger than the inner peripheral surface of the standing wall portion. When the caulking wall of the portion is caulked inward, and the second flange of the intermediate portion and the third flange portion of the lid portion are sandwiched between the first flange portion of the main body portion and the caulking wall, It is characterized in that the standing wall portion of the lid portion presses the partition wall in the axial direction and the radial direction so that the partition wall surely partitions the orifice flow path.

[0009]

According to the liquid-filled anti-vibration mount of the present invention, the partition is naturally separated in the process of assembling and stopping the main body portion, the intermediate portion and the lid portion without performing the moving operation accompanied by the forced force in the radial direction. A pressing force is generated between the wall and the inner peripheral surface of the standing wall portion that abuts against the wall. Therefore, both can be tightly attached to each other to partition the orifice channel in a watertight manner.

As a result, the liquid-filled anti-vibration mount according to the present invention can be operated without causing harmful leakage in the orifice flow path, which reduces damping performance, and exhibits stable and high damping characteristics.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. (Structure of Embodiment 1) The liquid-filled anti-vibration mount of the present invention is
As shown in FIG. 1, it is roughly divided into a main body portion 1, an intermediate portion 2 and a lid portion 3, and these three members are coaxially overlapped and the periphery is caulked to be integrally assembled.

(Main Body) First, as shown in FIG. 2 before assembly, the main body 1 includes a shaft fitting 11 for receiving an external force including a vibration component, and a first outer tubular fitting 12 for receiving the external force. The elastic member 13 connects the both. The shaft fitting 11 has a cup-shaped member 111 having an open end at the top thereof, and transmits an external force to another member of the liquid-filled vibration-damping mount via the cup-shaped member 111. That is, the outer peripheral surface of the cup-shaped member 111 is made of rubber and has a substantially conical surface.
The inner peripheral surfaces of 3 are joined, and serve to transmit an external force to the first outer tubular metal member 12.

On the other hand, the first outer cylinder fitting 12 is a member made of a steel plate having a substantially cylindrical shape, and the opening end on the side of the shaft fitting 11 is tapered in a conical shape. At the opening end on the opposite side, the first flange portion 121 and the first flange portion 12 that spread in the outer peripheral direction are provided.
1. A cylindrical caulking wall 122 that rises from the outer peripheral end of No. 1
With and. The elastic member 13 is made of synthetic rubber, and elastically joins the outer peripheral surface of the cup-shaped member 111 of the shaft fitting 11 and the tapered portion of the first outer tubular fitting near the opening end on the shaft fitting 11 side. . Then, one opening end and the other opening end of the main body 1 are watertightly divided. First of this elastic member 13
The joint surface with the outer tubular metal member 12 extends to the vicinity of the first flange portion 121, and as shown in FIG.
Concentric double seal ridges 131,1 along the inner edge of
32 to complete the watertightness when joining with the intermediate part 2.

(Intermediate portion) Next, as shown in FIGS. 4 and 5, the intermediate portion 2 is made of a synthetic metal such as a hat-shaped partition metal 21 and a movable part 22 joined to cover the metal. It is composed of an elastic member. This partition fitting 21
Is a second flange portion 211 that is stacked on the first flange portion 121 of the main body portion 1 and is pressed by caulking, and an inner wall portion 212 that is connected to the inner peripheral end of the second flange portion 211 and rises in a cylindrical shape. It is a steel plate press-formed product. A communication hole 26 having a substantially rectangular shape is punched out on a part of the circumference of the second flange portion 211.

Here, the hole defined in the center of the partition fitting 21 by the inner wall portion 212 is watertightly closed by the movable portion 22 made of an elastic body. The movable portion 22 also functions to receive a part of the external force applied to the shaft fitting 11 as described above. Then, the first flange portion 1 of the main body portion 1 described above.
21, the back surface of the second flange portion 211 facing the back and the outer peripheral surface of the inner wall portion 212 continuous with the second flange portion 211 form a part of the orifice flow path 300 between the lid portion 3 and the lid portion 3 as shown in FIG. To do.

The orifice channel 300 has an inner wall portion 21.
The intermediate portion 2 and the lid portion 3 are formed in a watertight manner by an elastic partition wall 24 that covers the edge of the open end of the cylinder 2 in a cylindrical shape. However, this partition wall 24 has a notch at one corner on the circumference to form another communication hole 25. Further, the intermediate portion 2 has the second flange portion 21.
The partition wall 23 is provided on the back surface of No. 1 and a part of the outer peripheral surface of the inner wall portion 212 to partition the orifice flow path 300 made of an elastic body.

As shown in FIGS. 4 and 5, the partition wall 23 is a member formed of an elastic body continuous from the movable portion 22, and has a shape tapered toward the tip end along the inner peripheral surface of the lid portion 3. Is a block with. In the partition wall 23,
A surface that comes into contact with the inner peripheral surface of the standing wall portion 313 of the lid portion 3 described later is an inclined surface that is larger in size than the inner peripheral surface of the standing wall portion 313. Also, the axial dimension of the partition wall 23 is slightly larger than the dimension of the inner peripheral surface of the lid portion 3 to be abutted, and as will be described later, the inner peripheral surface of the lid portion 3 naturally has a pressing force during assembly. Is designed to abut.

With such a partition wall 23 sandwiched, a communication hole 26 is provided in one side in the circumferential direction, and another communication hole 25 is provided in the other side, and an orifice flow path that surrounds the inner wall portion 212 about one round is provided. The movable part 22, the partition wall 23, and the partition wall 24 having the communication hole 25 that form the both ends of 300 are integrally formed of an elastic material such as synthetic rubber, and are watertight on the partition fitting 21. It is joined to and molded.

Here, a pair of communication holes 25 and 26 are provided in the orifice flow passages 300 on both sides separated by the partition wall 23, and are provided in a second liquid chamber 200 and a first liquid chamber 100, respectively, which will be described later. It is in communication. In the space between the intermediate portion 2 and the main body portion 1 as shown in FIG.
0 is formed.

(Lid) Finally, as shown in FIG. 6, the lid 3 is composed of a second outer cylinder fitting 31 and a diaphragm 32. The second outer tubular metal member 31 has a rotationally symmetrical shape including a third flange portion 311 forming an outer peripheral portion, a fourth flange portion 312 forming an inner peripheral portion, and a conical surface-shaped standing wall portion 313 connecting these. It is a steel plate press-formed product.

The third flange portion 311 is laminated on the second flange portion 211 and pressed by caulking to fix the lid portion 3 to the main body portion 1 and the intermediate portion 2. The standing wall portion 313 extends from the inner peripheral edge of the third flange portion 311 to the fourth flange portion 312.
It has a conical surface that continuously rises to the outer peripheral edge of. The fourth flange portion 312 is formed continuously from the standing wall portion 313 along the outer peripheral edge thereof, and the inner peripheral edge thereof rises in the opening end direction.

On the other hand, the diaphragm 32 is a stretchable film made of an elastic material such as synthetic rubber, and has a fourth flange 31.
The opening end of No. 2 is covered and the opening is watertightly closed.
The peripheral edge of the diaphragm 32 covers the front and back of the second outer tubular fitting 31 and extends to the inner peripheral edge of the third flange portion 311. Then, as shown in FIG. 7, the seal ridge 3 is formed on the contact surface of the third flange portion 311 with the second flange portion 211.
21 is formed so that the watertightness can be improved when caulking.

(Both Liquid Chambers and Orifice Flow Paths) The state in which the caulking wall 122 of the main body portion 1 is caulked in this way and assembled as a whole will be described with reference to FIG. 1 again. The partition wall 2 having the inner wall portion 212 as a core surrounds the space formed between the diaphragm 32 and the movable portion 22 of the intermediate portion 2 described above.
The second liquid chamber 200 is formed by partitioning with 4. Second
The liquid chamber 200 communicates with the orifice flow path 300 via a communication hole 25 provided in the partition wall 24.

On the other hand, the standing wall portion 313 is the fourth flange portion 31.
In cooperation with 2, the orifice flow path 300 is formed between the partition fitting 21 and the elastic partition wall 24. At both ends of the orifice flow path 300, a communication hole 26 connected to the first liquid chamber 100 and a communication hole 25 connected to the second liquid chamber 200 described later are provided on both sides partitioned by the partition wall 23 as described above. (See FIG. 4).

The inner peripheral surface of the standing wall portion 313 is funnel-shaped and comes into contact with the outer peripheral surface of the partition wall 23 of the elastic body with a pressing force. Similarly, the inner surface of the fourth flange portion 312 contacts the end surface of the partition wall 23 with a pressing force. Therefore, the partition wall 23 can partition the orifice passage 300 formed between the intermediate portion 2 and the lid portion 3 without causing seal leakage, and can prevent the orifice passage 300 from being short-circuited.

Then, the first liquid chamber 100 and the second liquid chamber 200
The damper liquid 4 fills the orifice flow path 300 that communicates with both liquid chambers through the pair of communication holes 26 and 25. The vibration component of the external force is damped by the flow path resistance generated when the damper liquid 4 passes through the orifice flow path 300, and the liquid filled vibration damping mount of the present invention exhibits the vibration damping effect.

(Characteristics of Embodiment 1) The structural feature of the present invention is that the standing wall portion 313 of the second outer tubular metal member 31 has a diameter that decreases from the third flange portion 311 to the fourth flange portion 312. And the partition wall 2 of the middle part 2
The surface of the third wall that abuts the standing wall portion 313 is an inclined surface that is larger in size than the inner peripheral surface of the standing wall portion 313.

Therefore, in the liquid-filled anti-vibration mount of the present invention, the caulking wall 122 of the main body portion 1 is caulked inward so that the first flange portion 121 of the main body portion 1 and the caulking wall 122 have the second portion of the intermediate portion 2 interposed therebetween. When sandwiching the second flange portion 211 and the third flange portion 311 of the lid portion 3, the partition wall 23 is pressed in the axial direction and the radial direction by the standing wall portion 313 of the lid portion 3, so that the orifice wall 300 It is characterized in that it is configured so as to reliably partition.

(Operation of Embodiment 1) According to the liquid-filled anti-vibration mount of the present invention, the main body portion 1, the intermediate portion 2, and the lid portion 3 can be connected to each other without performing a moving operation involving a forced force in the radial direction. In the process of assembling and caulking and stopping, the partition wall 23 naturally
A pressure is generated between the inner peripheral surface of the standing wall portion 313 and the contact surface of the standing wall portion 313.
Therefore, both can be tightly adhered to each other to partition the orifice channel 300 in a watertight manner.

As a result, the liquid-filled anti-vibration mount of the present invention can be operated without causing harmful leakage in the orifice passage 300, which reduces damping performance, and exhibits stable and high damping characteristics. (Structure of Embodiment 2) The liquid-filled anti-vibration mount of the present invention is
As shown in FIG. 8, it is roughly divided into a main body portion 1, an intermediate portion 5, and a lid portion 3, and these three members are overlapped and the periphery is caulked to be integrally assembled.

(Main Body) First of all, the main body 1 includes a shaft fitting 11, a first flange 121 at one end, and a cylindrical caulking wall 122 rising from the outer peripheral end of the first flange 121, as in the first embodiment. And a resilient member 13 that connects the shaft fitting 11 and the first outer tubular fitting 12 with each other.

The difference from the first embodiment is that the cup-shaped member 11
Since there is no attachment at the opening end of 1, the external force is not transmitted by directly contacting with the movable portion 52 of the intermediate portion 5 described later, and the external force is transmitted through the damper liquid 4 filled inside the cup-shaped member 111. Is Rukoto. (Intermediate part) Next, as shown in FIGS. 9 and 10, the intermediate part 5 is composed of a partition metal fitting 51 and an elastic member such as a synthetic rubber including the movable part 52 which is joined to cover the metal fitting. Composed.

The partition fitting 51 is a steel plate press-formed product, and is composed of a second flange portion 511, a cylindrical outer peripheral wall 513 connected to the inner peripheral end of the second flange portion 511, and hanging down cylindrically toward the main body 1 side, and its end. Intermediate flange 514 which is connected to the above portion and expands inward, and the second flange portion 511 which is connected to the inner peripheral end
And an inner wall portion 512 that rises in a cylinder shape beyond the above.

The second flange portion 511 is the main body portion 1 described above.
Is laminated on the first flange portion 121 and is pressed and fixed by caulking. On the other hand, a communication hole 56 having a substantially rectangular shape is punched out on a part of the circumference of the intermediate flange 514. Here, with the intermediate flange 514 as the bottom, the inner wall portion 5
A groove having a substantially rectangular cross section formed up to the middle of 12 and the outer peripheral wall 513 is filled with an elastic filling member 57 except for the communication hole 56.

Further, the hole defined in the center of the partition fitting 51 by the inner wall portion 512 is watertightly closed by the movable portion 52 made of an elastic body. Then, the first of the main body 1 described above
As shown in FIG. 8, the back surface of the second flange portion 511 facing the flange portion 121, the surface of the filling member 57 continuous with the back surface, and the outer peripheral surface of the inner wall portion 512 protruding from the second flange portion 511 are as shown in FIG. Orifice flow path 3 between the lid 3 and
00 part.

This orifice channel 300 has an inner wall portion 51.
The intermediate portion 5 and the lid portion 3 are watertightly partitioned from each other by an elastic partition wall 54 that covers the edge of the opening end 2 in a cylindrical shape. However, this partition bank 54 has a notch at one corner on the circumference to form another communication hole 55. Further, the intermediate portion 5 is the second flange portion 51.
The partition wall 53 is provided on the surface of the filling member 57 and a part of the outer peripheral surface of the inner wall portion 512 from the inner edge of the back surface of No. 1 to partition the orifice flow path 300 made of an elastic body. As shown in FIGS. 9 and 10, the partition wall 53 is a member formed of an elastic body continuous from the movable portion 52, and has a shape tapered toward the tip end along the inner peripheral surface of the lid portion 3 described later. It is a block that has. A communication hole 56 is provided on one side in the circumferential direction with the partition wall 53 sandwiched therebetween, and another communication hole 55 is provided on the other side to form both ends of the orifice flow path 300.

The movable part 52, the partition wall 53,
A partition wall 54 having a communication hole 55, and a filling member 57
Is integrally formed of an elastic material such as synthetic rubber, and is watertightly joined and molded on the partition fitting 51. Here, a pair of communication holes 55 and 56 are provided in the orifice flow passages 300 on both sides separated by the partition wall 53, and communicate with a second liquid chamber 200 and a first liquid chamber 100, which will be described later, respectively. There is.

A first liquid chamber 100 is formed in the space between the intermediate portion 5 and the main body 1 as shown in FIG. Here, since the edge formed by the inner wall portion 512 of the intermediate portion 5 and the intermediate flange 514 contacts the middle of the outer peripheral surface of the elastic member 13, the first liquid chamber 100 is divided into the outer peripheral portion 101 and the inner peripheral portion 102. Will be divided. When an external force including a vibration component acts, a narrow gap is created on the contact surface, and the first liquid chamber 1
00, the flow of the damper liquid 4 is generated between the outer peripheral portion 101 and the inner peripheral portion 102, and the vibration damping effect is generated here as well.

(Lid) The lid 3 is composed of a second outer cylinder fitting 31 and a diaphragm 32 as shown in FIG. 8 as in the first embodiment. That is, the second outer cylinder fitting 31
Is a second flange formed between the third flange part 311 stacked on the second flange part 511 and pressed by caulking, and the partition wall 54 provided on the end face of the inner wall part 512, and the intermediate part 5. It is composed of a fourth flange portion 312 that divides the liquid chamber 200 and the orifice channel 300, and a standing wall portion 313 that connects the third flange portion 311 and the fourth flange portion 312.

On the other hand, the diaphragm 32 is provided on the fourth flange portion 312 and covers the opening thereof. (Characteristics of Embodiment 2) As described above, the first liquid chamber 100 and the second liquid chamber 100
The present invention has the following features in the liquid-filled anti-vibration mount having the damper liquid 4 that fills the liquid chamber 200 and the orifice flow path 300 that communicates with both liquid chambers through the two communication holes 56 and 55.

That is, the feature of the present invention is that the second outer tube fitting 3
The standing wall portion 313 of No. 1 has a funnel shape whose diameter decreases from the third flange portion 311 toward the fourth flange portion 312, and the standing wall portion 31 of the partition wall 53 of the intermediate portion 5 is formed.
The surface contacting with 3 is an inclined surface having a size larger than the inner peripheral surface of the standing wall portion 313. Therefore, in the liquid-filled anti-vibration mount of the present invention, the caulking wall 122 of the main body portion 1 is caulked inward, and the second flange portion of the intermediate portion 5 is provided between the first flange portion 121 and the caulking wall 122 of the main body portion 1. 511
When sandwiching the third flange portion 311 of the lid portion 3 with the lid portion 3,
The partition wall 53 is configured to reliably partition the orifice flow path 300 by pressing the partition wall 53 in the axial direction and the radial direction by the vertical wall portion 313.

(Operation of Embodiment 2) According to the liquid-filled anti-vibration mount of the present invention, the main body portion 1, the intermediate portion 5 and the lid portion 3 can be connected to each other without performing a moving operation involving a forced force in the radial direction. In the process of assembling, caulking and stopping, the partition wall 53 naturally
A pressure is generated between the inner peripheral surface of the standing wall portion 313 and the contact surface of the standing wall portion 313.
Therefore, both can be tightly adhered to each other to partition the orifice channel 300 in a watertight manner.

As a result, the liquid-filled anti-vibration mount of the present invention can be operated without causing harmful leakage in the orifice flow path 300, which reduces damping performance, and exhibits stable and high damping characteristics.

[0044]

As described above in detail, according to the liquid-filled anti-vibration mount of the present invention, the outer peripheral surface of the partition wall is inclined, and the inner peripheral surface of the lid portion contacting the partition wall is formed into a funnel shape. Therefore, the pressing force naturally occurs during the assembly process,
Delivers sufficient sealing performance. As a result, a short circuit does not occur in the orifice flow path, and it is possible to prevent deterioration of the damping performance of the liquid-filled antivibration mount.

In addition, since a pressing force naturally occurs during the assembly process, there is no need to apply a pressing force in advance during assembly, and there is an advantage that the assembly work becomes easy.

[Brief description of drawings]

FIG. 1 is a sectional view of a liquid-filled anti-vibration mount according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the main body

FIG. 3 is an enlarged end view of part III in FIG.

FIG. 4 is a plan view of an intermediate portion.

5 is a sectional view taken along line VV in FIG.

FIG. 6 is a sectional view of a lid portion.

7 is an enlarged end view of a VII portion in FIG.

FIG. 8 is a sectional view of a liquid-filled anti-vibration mount according to a second embodiment of the present invention.

FIG. 9 is a plan view of an intermediate portion.

10 is a sectional view taken along line XX in FIG.

FIG. 11 is a sectional view of a conventional liquid-filled anti-vibration mount.

FIG. 12 is a perspective view of a partition fitting.

FIG. 13 is a sectional view of a main part

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Main body part 11 Shaft metal fittings 12 1st outer cylinder metal fittings 121 1st flange part 122 Caulking wall 13
Elastic member 2,5 Intermediate part 21,51 Partition metal fitting 211,511 Second flange part 212,512
Inner wall part 22,52 Movable part 23,53 Partition wall 25,26,55,56 Communication hole 3 Lid part 31
2nd outer cylinder metal fitting 311 3rd flange part 312 4th flange part 313 Standing wall part 32 Diaphragm 4 Damper liquid 100 1st liquid chamber 200 2nd liquid chamber 300 Orifice flow path

Claims (1)

[Claims] 1. A first outer cylinder fitting having a shaft fitting, a first flange portion at one end, and a cylindrical caulking wall rising from an outer peripheral end of the first flange portion, the shaft fitting and the first outer cylinder. A main body composed of an elastic member connecting the metal fittings, a second flange part laminated on the first flange part and pressed by caulking, and an inner wall that is connected to the inner peripheral end of the second flange part and stands up in a cylindrical shape. And a movable part made of an elastic body that closes a hole defined by the inner wall part.
A back surface of the second flange portion forms a part of the orifice flow path with a back surface of the second flange portion facing the first flange portion and an outer peripheral surface of the inner wall portion connected to the second flange portion. And a partition wall which is provided on a part of the outer peripheral surface of the inner wall portion and which divides the orifice flow path made of an elastic body, and a pair of communication holes provided in the orifice flow path on both sides of the partition wall. An intermediate portion forming a first liquid chamber with the main body portion, a third flange portion laminated on the second flange portion and pressed by caulking, and abutting on an end surface of the inner wall portion, A second outer cylinder including a fourth flange portion that divides the orifice flow path from a second liquid chamber that is formed between the intermediate portion, and a standing wall portion that connects the third flange portion and the fourth flange portion. And a lid portion including a metal fitting and a diaphragm provided on the fourth flange portion. A liquid-filled anti-vibration mount having a damper liquid that fills the first liquid chamber, the second liquid chamber, and the orifice flow path that communicates with both liquid chambers through both communication holes, Of the partition wall has a funnel shape whose diameter decreases from the third flange portion toward the fourth flange portion, and the surface of the partition wall of the intermediate portion that abuts the standing wall portion is an inner peripheral surface of the standing wall portion. It becomes an inclined surface with a larger dimension, and the caulking wall of the main body portion is caulked inward, and the second flange of the intermediate portion and the lid portion of the intermediate portion are provided between the first flange portion of the main body portion and the caulking wall. When the third flange portion is clamped, the partition wall is configured to reliably partition the orifice flow path by pressing the partition wall in the axial direction and the radial direction by the standing wall portion of the lid portion. Liquid-filled anti-vibration characterized by Und.