JPH08326830A - Liquid charged mount - Google Patents

Abstract

PURPOSE: To provide an inexpensive liquid charged mount which is excellent in vibration-insulating ability against continuous vibration input from an engine, and excellent in vibration suppressing ability against large amplitude vibration input. CONSTITUTION: A partition wall 5 fixed to the inner periphery of a casing 1 so as to partition between a first liquid chamber 6 and a second liquid chamber 7 is formed at its outer periphery with a plurality of overhanging parts 51a, 52a, and accordingly, passages 8 are formed from upper and lower two stage orifices 81, 82 which are connected to each other and which are defined between a circumferential groove 11a in the casing 1, and the overhanging part 51a, and between the inner peripheral surface of the casing 1 and the overhanging parts 51a, 32a. Accordingly, small amplitude vibrations in a high frequency range can be absorbed by the expansive elasticity of an elastic member 3, and large amplitude vibration in a low frequency range can be absorbed by a flow resistance obtained when charged liquid L flows through the long passages 8 composed of the orifices 81, 82.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid-filled mount which is used, for example, as an engine mount of an automobile and which utilizes vibration resistance of liquid in an orifice for damping vibration.

[0002]

2. Description of the Related Art A mount for supporting the vibration isolation of an automobile engine is not only insulating against continuous transmission of engine vibration during idling and running, but also at low frequency and large amplitude when starting the engine and during running. It is required to have excellent vibration damping property for promptly damping the shock vibration due to the bouncing of the vehicle body. And to realize such a function,
Typically, there is a liquid-filled mount disclosed in Japanese Utility Model Laid-Open No. 2-103542. In this liquid-filled mount, a plurality of chambers that undergo a volume change due to deformation of an elastic body due to vibration input are connected to each other via a flow path extending in a circumferential direction, and the liquid flows between the plurality of chambers. The damping force against the input vibration is obtained by the flow resistance when flowing through the passage. In particular, by making the upper and lower two-stage orifices communicate with each other, the flow path length is increased and a large attenuation is obtained.

[0003]

In the above-mentioned conventional liquid-filled mount, the shapes of a plurality of members for forming the upper and lower two-stage orifices are complicated, and their manufacture is complicated by die casting. You have to use the type
There is a problem that the manufacturing cost becomes high. Therefore, a technical problem to be solved by the present invention is to provide a liquid-filled mount at low cost, which has excellent vibration insulation properties against a continuous engine vibration input and excellent vibration suppression properties against a large amplitude vibration input. Especially.

[0004]

In order to effectively solve the above-mentioned technical problems, the liquid-filled mount according to the present invention partitions between the first liquid chamber on the elastic body side and the second liquid chamber on the diaphragm side. A plurality of protrusions are formed on the outer peripheral portion of the partition wall, and between the circumferential groove formed at the joint end of the case with the elastic body and the protrusion on the side of the first liquid chamber, and between the case and the plurality of protrusions. And a plurality of orifices extending in the circumferential direction are formed between them and the plurality of orifices form continuous flow passages through a communication hole formed in an overhanging portion interposed therebetween, and one end of this flow passage is formed. It is opened to the first liquid chamber through the opening formed in the circumferential groove portion, and the other end is opened to the second liquid chamber through the opening formed in the projecting portion on the second liquid chamber side. It was done.

[0005]

According to the liquid-filled mount having the above-mentioned structure, the volume (fluid pressure) change of the first liquid chamber due to the input of the vibration displacement is changed by the elasticity of the elastomer against the high-frequency vibration of small amplitude due to the engine vibration or the like. It absorbs by the expansion elasticity of the body and exerts a vibration insulation effect. In addition, with respect to large-amplitude low-frequency vibration, the flow path that communicates with the second liquid chamber is created as the volume (fluid pressure) of the first liquid chamber changes due to large deformation of the elastic body. The enclosed liquid is forced to flow, and a vibration damping force due to the flow resistance at this time is obtained. In the flow passage, a large damping force is obtained by lengthening the flow passage length by connecting a plurality of orifices formed in the circumferential direction by the circumferential groove portion of the case and the plurality of projecting portions of the partition wall to each other.

[0006]

【Example】

First Embodiment ... FIG. 1 is a sectional view of a first embodiment of a liquid-filled mount according to the present invention, taken along a plane passing through an axis.
2 is a sectional view taken along the line AA ′ of FIG. 1, and FIG.
FIG. 4 is a sectional view taken along the line B-C ', and FIG. 4 is a sectional view taken along the line C-C'. In these figures, reference numeral 1
Is a metal case in which the outer cylinder 11 and the cup member 12 below the outer cylinder 11 are connected to each other by caulking, and the cup member 12 is connected to, for example, a vehicle body frame (not shown) side via mounting bolts 13. 2 is an outer cylinder 11 of the case 1
Is a center boss made of metal and arranged concentrically above, and is connected to, for example, the engine (not shown) side via a mounting bolt 21 protruding from the upper surface. Center boss 2
The elastic body 3 made of an umbrella-shaped thick-walled elastomer is vulcanized and adhered between the above and the upper joint end of the outer cylinder 11 of the case 1. The outer cylinder 11 of the case 1 and the caulking portion 1a of the cup member 12 are integrally caulked and fixed to the diaphragm 4 made of an elastomer and the upper partition wall 5. The cup member 12 has a vent hole 1 for opening the inner peripheral space thereof to the outside so that the operation of the diaphragm 4 is not hindered.
2a is open.

The partition wall 5 is a space between the elastic body 3 and the diaphragm 4, which is filled with the enclosed liquid L, and has a first liquid chamber 6 on the elastic body 3 side and a second liquid chamber 7 on the diaphragm 4 side. The outer cylinder 11 has an elastic body 3 on its inner peripheral surface.
Of the metal ring 51 having a first projecting portion 51a that is in close contact with the elastic film 31 formed by wrapping around a part of the metal ring 51 and the caulking portion of the outer cylinder 11 and the cup member 12 below the metal ring 51. It is composed of a plate-shaped metal partition plate 52 having a fixed second projecting portion 52a. In the metal ring 51, the cylindrical portion 51b formed on the inner peripheral side of the first projecting portion 51a is
The partition plate 52 is closely fitted to an annular step portion 52b formed on the inner peripheral side of the second projecting portion 52a, and is thereby integrated with the partition plate 52.

The first liquid chamber 6 and the second liquid chamber 7 are mutually connected via a flow path 8 consisting of two upper and lower orifices 81, 82 extending in the circumferential direction along the inner circumference of the outer cylinder 11 of the case 1. It is in communication. The outer cylinder 11 has a circumferential groove portion 11a as the joint end with the elastic body 3 once extends upward and is folded back to the lower and inner peripheral sides, and the upper first-stage orifice 81 is elastic. The circumferential groove portion 11a to which a part of the body 3 is wrapped around and adhered, and the first projecting portion 5 in the partition wall 5
As shown in FIG. 2, it is formed so as to circulate in the circumferential direction in a substantially C-shape between 1a and 1a. Also, the lower 2
The orifice 82 of the step is formed so as to continue annularly between the first projecting portion 51a and the second projecting portion 52a of the partition wall 5, as shown in FIG.

One end 81a in the circumferential direction of the first-stage orifice 81 shown in FIG. 2 is open to the first liquid chamber 6 through the opening 11b formed in the circumferential groove 11a, and the other end 81b in the circumferential direction is formed. Are communicated with the second-stage orifice 82 through a communication hole 51c formed by a notch formed in the first projecting portion 51a interposed between the second-stage orifice 82 and the second-stage orifice 82 shown in FIG. Second stage orifice 82
Is opened to the second liquid chamber 7 through an opening 52c formed in the second projecting portion 52a of the partition wall 5 shown in FIG. 4 at a position different from the communication hole 51c in the circumferential direction by 180 °.

Next, the operation of this liquid-filled mount will be described. When continuous engine vibration in a high frequency range due to high-speed rotation of the engine is input, such vibration has an extremely small amplitude. The change in hydraulic pressure in the liquid chamber 6 is such that it is sufficiently absorbed within the range of slight expansion elastic deformation of the elastic body 3. Therefore, the enclosed liquid L hardly flows through the flow path 8, and the dynamic spring constant is kept low to exhibit excellent vibration insulation. In addition, a large-amplitude vibration that causes a large hydraulic pressure change in the first liquid chamber 6 that exceeds the hydraulic pressure absorption capacity due to the expanded elastic deformation of the elastic body 3, such as a shock due to the bouncing of the vehicle body, is input. In this case, the enclosed liquid L passes through the flow path 8 including the orifices 81 and 82 and the first liquid chamber 6
Flows between the second liquid chamber 7 and the second liquid chamber 7, and the flow resistance at this time provides a good shock absorbing property against shock input and suppresses the vibration in a short time. At this time, in the second-stage orifice 82, the flow of the enclosed liquid L is clockwise in FIG. 3 between the communication hole 51c to the first-stage orifice 81 and the opening 52c to the second liquid chamber 7. And counterclockwise. Therefore, the cross-sectional area of the second-stage orifice 82 in the cross-section shown in FIG. 1 is 50 to 75% of the cross-sectional area of the first-stage orifice 81.

According to the liquid-filled mount of this embodiment, the partition wall 5 for partitioning the first liquid chamber 6 and the second liquid chamber 7 separates the metal ring 51 and the partition plate 52, which are press-formed products of a metal plate, from each other. It has a simple structure that fits together, and it has two orifices 8
Numerals 1 and 82 denote the outer peripheral groove 11a of the outer cylinder 11, the cup member 12, the partition wall 5, and the diaphragm 4 which are integrated with each other by caulking, so that the circumferential groove portion 11a of the outer cylinder 11 and the first projecting portion of the partition wall 5 are integrated. 51a and between the first projecting portion 51a and the second projecting portion 52a. Moreover, since the high-frequency vibration having a small amplitude is absorbed by utilizing the expansion elasticity of the elastic body 3 regardless of the conventional movable partition plate, the number of parts is small and it can be manufactured at low cost.

In other words, in the liquid-filled mount according to the first embodiment, in other words, the one mounting portion 2 and the other mounting portion 1 are connected via the elastic body 3 made of a rubber-like elastic material. At the same time, a diaphragm 4 is connected to the other mounting portion 1 to provide an airtight space, and a partition portion 5 is provided in the airtight space to define the airtight space between the first liquid chamber 6 on one mounting portion 2 side and the diaphragm 4 side. The second liquid chamber 7 and a partition 5
In the liquid-filled mount in which the orifices 81 and 82 for communicating the both chambers 6 and 7 are provided and the working liquid L is enclosed in the both chambers 6 and 7, the other mounting portion 2 includes a circumferential groove portion 11a. The outer cylinder 11 and the partition 5 is
It has a metal ring 51 and a partition plate 52 which are fixed to the inner peripheral side of the outer cylinder 11 and are fitted to each other. The metal ring 51 has a first projecting portion 51a and the partition plate 52 is a second First orifice 81 having the overhang portion 52a formed between the circumferential groove portion 11a and the first overhang portion 51a.
And a second orifice 82 formed between the first overhanging portion 51a and the second overhanging portion 52a.

Second Embodiment: FIG. 5 is a sectional view of the second embodiment of the liquid-filled mount according to the present invention taken along a plane passing through the axis, and FIG. 6 is a DD 'line in FIG. 7 is a sectional view taken along line EE ′ in FIG. 7, and FIG.
9 is a cross-sectional view taken along the line FF ′ of FIG.
10 is a plan view of the metal ring 51, FIG. 11 is a cross-sectional view taken along line H--O--H of FIG. 10, and FIG.
FIG. 11 is a view on arrow I in FIG. 10. In these figures,
Reference numeral 1 is an outer cylinder 11 and a cup member 12 below the outer cylinder 11.
Is a metal case connected to each other by caulking, and the cup member 12 is connected to a vehicle body frame (not shown) side via a mounting bolt 13. 2 is case 1
Is a metal center boss concentrically arranged above the outer cylinder 11 and is connected to, for example, the engine (not shown) side via a mounting bolt 21 protruding from the upper surface. An elastic body 3 made of an umbrella-shaped thick elastomer is vulcanized and bonded between the center boss 2 and an upper joint end of the outer cylinder 11 of the case 1. Outer cylinder 11 and cup member 1 in case 1
A diaphragm 4 made of an elastomer and an upper partition wall 5 are integrally fixed to the second crimping portion 1a by crimping. The cup member 12 is provided with a vent hole 12a for opening the inner peripheral space thereof to the outside so that the operation of the diaphragm 4 is not hindered.

The partition wall 5 is a space between the elastic body 3 and the diaphragm 4, which is filled with the enclosed liquid L, and has a first liquid chamber 6 on the elastic body 3 side and a second liquid chamber 7 on the diaphragm 4 side. The outer cylinder 11 has an elastic body 3 on its inner peripheral surface.
Of the metal ring 51 having a first projecting portion 51a that is in close contact with the elastic film 31 formed by wrapping around a part of the metal ring 51 and the caulking portion of the outer cylinder 11 and the cup member 12 below the metal ring 51. It is composed of a plate-shaped metal partition plate 52 having a fixed second projecting portion 52a. In the metal ring 51, the cylindrical portion 51b formed on the inner peripheral side of the first projecting portion 51a is
The partition plate 52 is closely fitted (press fitted) to an annular step portion 52b formed on the inner peripheral side of the second projecting portion 52a,
Thereby, it is integrated with the partition plate 52.

The first liquid chamber 6 and the second liquid chamber 7 are mutually connected via a flow path 8 consisting of upper and lower orifices 81 and 82 extending in the circumferential direction along the inner circumference of the outer cylinder 11 of the case 1. It is in communication. The outer cylinder 11 has a circumferential groove portion 11a as the joint end with the elastic body 3 once extends upward and is folded back to the lower and inner peripheral sides, and the upper first-stage orifice 81 is elastic. The circumferential groove portion 11a to which a part of the body 3 is wrapped around and adhered, and the first projecting portion 5 in the partition wall 5
As shown in FIG. 6, it is formed so as to circulate in a substantially C-shape in the circumferential direction between 1a and 1a. Also, the lower 2
The orifice 82 of the step is formed so as to circulate between the first overhanging portion 51a and the second overhanging portion 52a in the partition wall 5 in a substantially C-shape in the circumferential direction as shown in FIG. Has been done. This lower second-stage orifice 82
However, the projecting portion 5 of the metal ring 51 is formed in a substantially C shape in a plane instead of the annular shape as in the above-described first embodiment.
The 1a and the tubular portion 51b are integrally provided with the flow path dividing portion 61 having a substantially U-shape when viewed from the I direction (see (FIG. 10)) as best shown in FIG. The lower surface 62 of the flow path dividing portion 61 is in contact with the upper surface of the second projecting portion 52a of the partition plate 52 as shown in FIG. It is in contact with the elastic film 31. Also, the cross-sectional area of the lower second-stage orifice 82 is the same as the cross-sectional area of the upper first-stage orifice 81, unlike the case of the first embodiment. It is set (because the flow is not branched).

One end 81a in the circumferential direction of the first-stage orifice 81 shown in FIG. 6 is opened to the first liquid chamber 6 through the opening 11b formed in the circumferential groove 11a, and the other end 81b in the circumferential direction is formed. Are communicated with the second-stage orifice 82 through a communication hole 51c formed by a notch formed in the first projecting portion 51a interposed between the second-stage orifice 82 and the second-stage orifice 82 shown in FIG. Second stage orifice 82
Is opened to the second liquid chamber 7 through an opening 52c formed in the second projecting portion 52a of the partition wall 5 shown in FIG. 9 at a position different from the communication hole 51c in the circumferential direction by 180 °.

Next, the operation of the liquid-filled mount will be described. When continuous engine vibration in the high frequency range due to high speed rotation of the engine is input, such vibration has an extremely small amplitude. The change in hydraulic pressure in the liquid chamber 6 is such that it is sufficiently absorbed within the range of slight expansion elastic deformation of the elastic body 3. Therefore, the enclosed liquid L hardly flows through the flow path 8, and the dynamic spring constant is kept low to exhibit excellent vibration insulation. In addition, a large-amplitude vibration that causes a large hydraulic pressure change in the first liquid chamber 6 that exceeds the hydraulic pressure absorption capacity due to the expanded elastic deformation of the elastic body 3, such as a shock due to the bouncing of the vehicle body, is input. In this case, the enclosed liquid L passes through the flow path 8 including the orifices 81 and 82 and the first liquid chamber 6
Flows between the second liquid chamber 7 and the second liquid chamber 7, and the flow resistance at this time provides a good shock absorbing property against shock input and suppresses the vibration in a short time.

According to the liquid-filled mount of this embodiment, the partition wall 5 for partitioning the first liquid chamber 6 and the second liquid chamber 7 separates the metal ring 51 and the partition plate 52, which are press-formed products of a metal plate, from each other. It has a simple structure that fits together, and it has two orifices 8
Numerals 1 and 82 denote the outer peripheral groove 11a of the outer cylinder 11, the cup member 12, the partition wall 5, and the diaphragm 4 which are integrated with each other by caulking, so that the circumferential groove portion 11a of the outer cylinder 11 and the first projecting portion of the partition wall 5 are integrated. 51a and between the first projecting portion 51a and the second projecting portion 52a. Moreover, since the high-frequency vibration having a small amplitude is absorbed by utilizing the expansion elasticity of the elastic body 3 regardless of the conventional movable partition plate, the number of parts is small and it can be manufactured at low cost. Further, by changing the opening position of the opening 52b, it is possible to easily change the flow path length of the lower second-stage orifice 82, and thus the characteristics of the orifice 82 can be easily changed. .

In other words, the liquid-filled mount according to the second embodiment, in other words, connects one mounting portion 2 and the other mounting portion 1 via an elastic body 3 made of a rubber-like elastic material. At the same time, a diaphragm 4 is connected to the other mounting portion 1 to provide an airtight space, and a partition portion 5 is provided in the airtight space to define the airtight space between the first liquid chamber 6 on one mounting portion 2 side and the diaphragm 4 side. The second liquid chamber 7 and a partition 5
In the liquid-filled mount in which the orifices 81 and 82 for communicating the both chambers 6 and 7 are provided and the working liquid L is enclosed in the both chambers 6 and 7, the other mounting portion 2 includes a circumferential groove portion 11a. The outer cylinder 11 and the partition 5 is
It has a metal ring 51 and a partition plate 52 which are fixed to the inner peripheral side of the outer cylinder 11 and are fitted to each other. The metal ring 51 has a first projecting portion 51a and the partition plate 52 is a second First orifice 81 having the overhang portion 52a formed between the circumferential groove portion 11a and the first overhang portion 51a.
And a second orifice 82 formed between the first overhang portion 51a and the second overhang portion 52a, and the second orifice 82 is formed in the first overhang portion 51a. It is characterized in that a flow path dividing portion 61 for specifying the flow path shape of the above in a substantially C-shape in a plane is provided.

Third Embodiment ... FIG. 13 is a sectional view of a third embodiment of the liquid-filled mount according to the present invention taken along a plane passing through the axis, and FIG. 14 is a line JJ 'in FIG. And FIG. 15 is a sectional view taken along the line KK '. In the liquid-filled mount of this embodiment, the partition wall 5 is in full contact with the elastic film 31 formed by wrapping a part of the elastic body 3 around the inner peripheral surface of the outer cylinder 11 of the case 1. A metal ring 53 having a substantially U-shaped cross section having second protrusions 53a and 53b, and a caulking portion 1 between the outer cylinder 11 and the cup member 12.
It comprises a metal plate 54 in the shape of a saucer having a third projecting portion 54a fixed to a. The inner peripheral surface of the metal ring 53 is closely fitted to the annular step portion 54b formed on the partition plate 54, and is thereby integrated with the partition plate 54.

The first-stage orifice 91 on the upper side is formed in a bent shape at the joint end of the outer cylinder 11 of the case 1, and a part of the elastic body 3 is wrapped around and attached to the circumferential groove portion 11a.
And between the first overhang portion 53a of the partition wall 5,
The first stage orifice 8 in the first embodiment shown in FIG.
Similar to No. 1, it is formed so as to circulate in a substantially C shape in the circumferential direction. The second orifice 92 on the lower side is formed so as to continue annularly between the first projecting portion 53a and the second projecting portion 53b of the metal ring 53, as shown in FIG. There is. And further below that 3
The orifice 93 of the step is formed so as to continue annularly between the second projecting portion 53b of the metal ring 53 and the third projecting portion 54a of the partition plate 54.

One end in the circumferential direction of the first-stage orifice 91, which circulates in a C-shape along the inner circumference of the outer cylinder 11, has an opening 11 at one end.
14b is opened to the first liquid chamber 6 and the other end in the circumferential direction is a communication formed by a notch formed in the first projecting portion 53a which is interposed between the second end orifice 92 shown in FIG. The second stage orifice 92 communicates with each other through the hole 53c. The second-stage orifice 92 is located at a position different by 180 ° in the circumferential direction from the communication hole 53c, and the third-stage orifice 92 is formed through a communication hole 53d formed by a notch formed in the second projecting portion 53b shown in FIG. It communicates with the orifice 93. Further, the third-stage orifice 93 is 180 degrees in the circumferential direction with respect to the communication hole 53d.
° Openings 54c opened in the partition plate 54 at different positions
Through to the second liquid chamber 7.

The parts other than those described above have almost the same construction as the first embodiment, and therefore their explanations are omitted.

According to the liquid-filled mount of the third embodiment, the flow passages 9 for connecting the first liquid chamber 6 on the elastic body 3 side and the second liquid chamber 7 on the diaphragm 4 side to each other are provided in the upper and lower portions. Since it is composed of the orifices 91 to 93 in stages, the channel length can be made longer as compared with the case where the channel 8 in the first embodiment is one in which the upper and lower orifices 81 and 82 are continuous. Further, it is possible to obtain more excellent shock absorbing property and vibration damping property against a large amplitude input vibration. Moreover, as is clear from the comparison with the first embodiment, by changing the shape of the partition plate and the metal ring forming the partition wall 5, the flow path length can be increased without increasing the number of parts and complicating the structure. It is the one that realizes the functional improvement by the increase.

In the third embodiment, in the second-stage orifice 92, the flow of the enclosed liquid L is the communication hole 53c to the first-stage orifice 91 and the third-stage orifice 9.
In the third-stage orifice 93, the flow of the enclosed liquid L communicates with the second-stage orifice 92 by being branched in the clockwise direction and the counterclockwise direction in FIG. The hole 53d and the opening 54c to the second liquid chamber 7 are branched in the clockwise direction and the counterclockwise direction in FIG. Therefore, the sectional area of the second and third orifices 92, 93 in the cross section shown in FIG. 13 is 50 to 75% of the sectional area of the first orifice 91.

In the liquid-filled mount according to the third embodiment, in other words, the one mounting portion 2 and the other mounting portion 1 are connected via the elastic body 3 made of a rubber-like elastic material. At the same time, a diaphragm 4 is connected to the other mounting portion 1 to provide an airtight space, and a partition portion 5 is provided in the airtight space to define the airtight space between the first liquid chamber 6 on one mounting portion 2 side and the diaphragm 4 side. The second liquid chamber 7 and a partition 5
Orifices 91, 92, 9 that connect the two chambers 6, 7 to
In the liquid-filled mount in which the working fluid L is filled in both chambers 6 and 7, the other mounting portion 2 is provided.
Has an outer cylinder 11 having a circumferential groove portion 11a, and the partition portion 5 has a metal ring 53 and a partition plate 54 fixed to the inner peripheral side of the outer cylinder 11 and fitted to each other. , The metal ring 53 has a first projecting portion 53a and a second projecting portion 53b, and the partition plate 54 has a third projecting portion 54a.
Reference numerals 2 and 93 denote a first orifice 91 formed between the circumferential groove portion 11a and the first projecting portion 53a, and the first projecting portion 53a and the second projecting portion 53.
and a third orifice 93 formed between the second overhanging portion 53b and the third overhanging portion 54a. To do.

The present invention is not limited to the configurations of the above-mentioned embodiments. For example, the second-stage orifice or the third-stage orifice may also have a C-shaped orbital shape, like the first-stage orifice. In this case, the second-stage orifice or the third-stage orifice has the same sectional area as the first-stage orifice.

[0028]

According to the liquid-filled mount of the present invention,
In order to obtain a damping force for large-amplitude vibration, the flow path length is increased by connecting multiple orifices.These orifices are formed by the case and partition walls, and complicated parts are used. Since it is not available, it can be provided at a low price.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of a liquid-filled mount according to the present invention cut along a plane passing through an axis.

FIG. 2 is a cross-sectional view taken along the line AA ′ in FIG.

FIG. 3 is a cross-sectional view taken along the line BB ′ in FIG.

FIG. 4 is a cross-sectional view taken along the line CC ′ in FIG.

FIG. 5 is a sectional view showing a second embodiment of the liquid-filled mount according to the present invention, taken along a plane passing through the axis.

FIG. 6 is a cross-sectional view taken along the line DD ′ in FIG.

FIG. 7 is a cross-sectional view taken along the line EE ′ in FIG.

FIG. 8 is a cross-sectional view taken along the line FF ′ in FIG.

9 is a cross-sectional view taken along the line GG ′ in FIG.

FIG. 10 is a plan view of a metal ring.

11 is a cross-sectional view taken along the line HOH in FIG.

12 is a view on arrow I in FIG.

FIG. 13 is a sectional view showing a third embodiment of the liquid-filled mount according to the present invention by cutting along a plane passing through the axis.

14 is a cross-sectional view taken along the line JJ ′ in FIG.

15 is a cross-sectional view taken along the line KK 'in FIG.

[Explanation of symbols]

 1 Case 11 Outer Cylinder 11a Circumferential Groove 11b, 52c, 54c Opening 12 Cup Member 12a Vent 13,21 Mounting Bolt 2 Center Boss 3 Elastic 31 Elastic Membrane 4 Diaphragm 5 Partition 51, 53 Metal Ring 51a, 53a First Overhang portion 51b Cylindrical portion 51c, 53c, 53d Communication hole 52, 54 Partition plate 52a, 53b Second overhang portion 52b, 54b Annular step portion 54a Third overhang portion 6 First liquid chamber 7 Second liquid chamber 8 , 9 flow path 61 flow path dividing part 62 lower surface 63 tip surface 81, 82, 91, 92, 93 orifice

Claims (1)

[Claims] 1. An elastic body (3) integrally formed between a case (1) and a center boss (2) and made of an elastomer continuous in a circumferential direction, and an elastic body (3) displaced to an inner circumference of the case (1). A diaphragm (4) freely sealed, and the elastic body (3) fixed to the inner circumference of the case (1).
And a partition wall (5) for partitioning between the first liquid chamber (6) on the side of the diaphragm and the second liquid chamber (7) on the side of the diaphragm (4). Department (51
a, 52a, 53a, 53b, 54a) are formed, and the circumferential groove portion (11a) formed at the joint end of the case (1) with the elastic body (3) and the first liquid chamber (6).
Between the side protrusions (51a, 53a) and between the case (1) and the plurality of protrusions (51a, 52a, 5).
3a, 53b, 54a) are formed with orifices (81, 82, 91, 92, 93) extending in the circumferential direction, respectively, and the plurality of orifices (81, 82, 91, 92, 9) are formed.
3) is a protruding portion (51a, 53a,
Communication hole (51c, 53c, 53) opened in 53b).
d), continuous flow paths (8, 9) are formed, and one end of the flow paths (8, 9) is opened through the opening (11b) formed in the circumferential groove (11a). An opening (52) which is open to the first liquid chamber (6) and whose other end is formed in the overhanging portion (52a, 54a) on the second liquid chamber (7) side.
A liquid-filled mount characterized in that it is opened to the second liquid chamber (7) via the c, 54c).