JP2000120758A - Liquid seal mount - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve assemblage and utilize parts in common by assembling a liquid seal body part and an additional part other than the body part in a different process. SOLUTION: A body part comprises a first supporting member, a second supporting member, a body elastic member, a diaphragm 9 and a partition member. A main liquid chamber 11 and a sub-liquid chamber 12 are partitively arranged in the inside of the body part by the partition member and communicated with each other through an orifice passage 41. A first caulking part 63 and a second caulking part 68 having different positions are arranged to a cylindrical outer metal fitting 8 covering the body elastic member, the diaphragm 9 and the partition member are fixed by the first caulking part 63, and an additional part 30 is fixed by the second caulking part 68. At this time, the body part 20 and the additional part 30 are positioned by a positioning ring 64. The additional part 30 is equipped with the driving part 42 of an elastic control mechanism 40, therefore the outlet 49 of an orifice passage 47 is opened and closed through the diaphragm 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid ring mount used for an engine mount for an automobile or the like.

[0002]

2. Description of the Related Art In a general liquid ring mount, a main liquid chamber partially constituted by a main body elastic member having a concave space and a sub liquid chamber partially constituted by a diaphragm are separated by a partition wall. And it is a structure that communicates with the orifice passage,
At one end of a cylindrical outer cover that covers the periphery of the main body elastic member, the outer peripheral portions of the diaphragm and the partition wall are caulked and fixed.

[0003]

By the way, it may be necessary to attach some additional portion to the main body including the main body elastic member, the partition wall and the diaphragm on the diaphragm side. Therefore, the main object of the present invention is to facilitate attachment in such a case and to easily attach additional parts of different types.

[0004]

According to a first aspect of the present invention, there is provided a liquid ring mount according to the present invention, comprising: a main liquid chamber at least partially constituted by a main body elastic member having a concave space; In a liquid seal mount in which a sub liquid chamber partially constituted by a diaphragm is separated by a partition wall and communicated with an orifice passage, the sub liquid chamber is attached to the main body portion including the main body elastic member, the partition wall, and the diaphragm, and to the diaphragm side. With an additional part,
First and second connecting projections having different projecting lengths are provided on a cylindrical outer cover which covers the periphery of the main liquid chamber, and the partition wall and the diaphragm are connected by the first connecting protrusion. The additional member is connected by a second connecting protrusion.

[0005] A second invention is the above-mentioned first invention, wherein:
The additional portion includes a cup-shaped member that covers the outside of the diaphragm, and an opening edge of the cup-shaped member is fixed to the fixing portion formed by the first connection protrusion with the second connection protrusion with a predetermined gap. At the same time, in order to position the additional portion with respect to the main body, a positioning ring is protruded from the cylindrical outer cover side, and the protruding end is inserted into the cup-shaped member and provided in advance inside. It is characterized by being pressed against an elastic member.

According to a third aspect of the present invention, in the second aspect, a small-diameter portion is provided on a part of the positioning ring so as to form a gap around the entire circumference with the inner peripheral surface of the cup-shaped member. An air opening hole provided in the member and a space between the diaphragm and the driving section are communicated with each other.

In a fourth aspect based on the first aspect, the additional portion includes a driving portion in an elastic control mechanism for opening and closing the sub-liquid chamber side opening of the orifice passage by the diaphragm. It is characterized by.

In a fifth aspect based on the fourth aspect, the additional section includes the drive section and a cup-shaped member for accommodating the drive section, and the drive section includes a pressing section abutting on the diaphragm. A driving unit elastic body whose inner peripheral side is integrated with an outer peripheral part thereof to allow the movement of the pressing unit; and a fixing ring in which the outer peripheral side of the driving unit elastic body is integrated. While covering at least a part of the outer peripheral side with an elastic covering portion continuous with the driving portion elastic body,
The elastic covering portion includes a first seal lip protruding toward the outer peripheral side of the fixing ring and pressed against the inner peripheral surface of the cup-shaped member, and a second seal lip pressed against the bottom of the cup-shaped member. I do.

In a sixth aspect based on the fifth aspect, the fixing ring has a small diameter portion and a large diameter portion, and a gap is provided between an outer peripheral surface of the large diameter portion and an inner peripheral surface of the cup-shaped member. The elastic coating portion is formed on the outer periphery of the small diameter portion, and the elastic coating portion is brought into contact with the inner peripheral surface of the cup-shaped member.

[0010]

According to the first aspect of the present invention, by providing the first and second connecting projections having different projection lengths, the main body side where the main liquid chamber and the sub liquid chamber are formed and the additional part. Separated from the side and fixed separately in a separate process, the number of parts can be reduced, the fixing structure and the assembly process can be simplified, the assembly work can be simplified, and the cost can be reduced. it can. At the same time, it is possible to reliably prevent the enclosed liquid from intruding into the additional portion side, and to improve the quality.

Further, if a plurality of types of additional portions having different structures are prepared, and these are appropriately selected and combined with the main body, a plurality of liquid seal mount structures having a common main body can be obtained. In addition, the parts can be shared. In addition, by removing the additional portion and changing the partition wall to one having a single or multiple orifice passages or to an elastic partition wall structure having an elastically deformable elastic membrane structure, a plurality of partitions having different dynamic spring characteristics can be easily obtained. Can be obtained.

According to the second aspect of the present invention, since the positioning ring is provided on the main body, the mounting position of the additional portion with respect to the main body can be determined. For this reason, dimensional control is facilitated and assembling work is facilitated. In addition, the opening edge of the cup-shaped member is fixed by the second coupling projection with a predetermined gap from the fixing portion formed by the first coupling projection, and the protruding end of the positioning ring is inserted into the cup-shaped member beforehand. Since the cup-shaped member is pressed against the elastic member provided inside, the dimensional tolerance in fixing the cup-shaped member by the second coupling projection can be absorbed, and the member can be securely attached.

According to a third aspect of the present invention, the air in the internal space in which the diaphragm is deformed is formed between the small diameter portion through-hole formed in a part of the positioning ring and the small diameter portion and the inner peripheral surface of the cup-shaped member. Since the air can be released to the atmosphere from the atmosphere opening hole provided in the cup-shaped member through the entire circumference of the gap, the movement of the diaphragm can be made smooth and the orifice resonance effect can be maximized.

Further, since the atmospheric pressure is maintained even when the thermal expansion and contraction of the air in the internal space occurs, the effect of the temperature change on the characteristics can be reduced and the characteristics can be stabilized. In addition, the positioning ring can communicate with the air opening hole through the gap at any position in the circumferential direction with respect to the cup-shaped metal fitting. For this reason, since the relative position of the positioning ring in the circumferential direction with respect to the cup-shaped bracket can be set freely,
The assemblability is improved.

According to the fourth aspect of the present invention, the additional portion is provided with a driving portion for the elastic control mechanism. However, since the additional portion is mounted separately from the main body, the enclosed liquid enters the elastic control mechanism and is driven. Reaching the central part can be reliably prevented.

According to the fifth aspect, the elastic covering portion covering at least a part of the fixing ring is formed by a part of the elastic member of the driving portion, and the elastic covering portion is provided on the inner peripheral surface of the cup-shaped member. Since the first seal lip pressed between the first seal lip and the second seal lip pressed between the bottoms of the cup-shaped members are provided, a double seal structure is provided, and the airtightness of the drive unit is improved. The operation accuracy can be improved.

According to a sixth aspect of the present invention, a large-diameter portion and a small-diameter portion are provided on a fixing ring. Since a gap is provided between the inner peripheral surface of the cup-shaped member and the drive unit, the press-fit load when the drive unit is press-fitted into the cup-shaped member can be reduced, and investment in press-fitting equipment can be reduced, and dimensional tolerances in the radial direction can be absorbed. In addition, dimensional control is facilitated and assembly work is facilitated.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an engine mount according to a first embodiment will be described with reference to the drawings. 1 is a partial sectional view showing an assembling method, FIG. 2 is a plan view of an engine mount according to the present embodiment, FIG. 3 is an overall sectional view corresponding to line 3-3 in FIG. 2, and FIG. 5, FIG. 5 is a plan view of the first and second orifice passages, FIG. 6 is a side view of the main body, FIG. 7 is a sectional view of the drive unit, and FIG. It is an F section expanded sectional view.

As shown in FIGS. 2 to 4, the engine mount includes a first support member 1 attached to an engine which is a vibration source, a second support member 2 attached to a vehicle body, and The main body elastic member 3 is provided therebetween.

The first support member 1 has a shaft shape extending toward the inside of the second support member 2 in parallel to the main vibration input direction X. The main body elastic member 3 is formed of an appropriate elastic material such as rubber or elastomer, and has a substantially conical conical portion 4 and a cylindrical portion 5 integrally formed.

The cylindrical portion 5 is integrated with the inner surface of a cylindrical outer cover 8 constituting a part of the second support member 2, and has a diaphragm 9 and a main body fixed inside the cylindrical outer cover 8. A liquid chamber is formed inside by the elastic member 3.

The liquid chamber is divided into a main liquid chamber 11 on the first support member 1 side and a sub liquid chamber 12 on the diaphragm 9 side by a partition member 10 provided inside the diaphragm 9, and formed in the partition member 10. Orifice passages described later.

The first support member 1 extends long along the center of the main body elastic member 3, one end of which projects into the main liquid chamber 11,
Here, a substantially cup-shaped medium / high frequency device 17 is fixed by caulking. The medium-high frequency device 17 is non-circular when viewed from the X direction, and has a substantially elliptical shape in which a symmetrical position of a circular arc is cut.

A predetermined orifice gap 18 is formed between the middle and high frequency device 17 and the inner surface of the conical portion 4 so as to absorb vibration input in a high circumferential region by liquid column resonance. The medium-high frequency device 17 is not a non-circular shape but can be arbitrarily changed to another shape (for example, a circular shape).

The main body 20 is constituted by the first support member 1, the second support member 2, the main body elastic member 3, the diaphragm 9 and the partition member 10, which are the basic components of the liquid ring mount thus constructed. Further, an additional portion 30 is attached to the body 9 side of the diaphragm 9.

The additional section 30 is provided with a drive section 42 for an elastic control mechanism 40. The elastic control mechanism 40 includes an orifice passage 41 provided in the partition member 10, a diaphragm 9 for opening and closing the orifice passage 41, and a driving unit 42.

The partition member 10 includes an upper cup-shaped member 43,
A circular and thick orifice member 44 fitted into the inside thereof
And a disk-shaped lid 45 and an orifice member 44 to be placed thereon, and an orifice passage 41 is formed therein.

As shown in FIG. 5, the orifice member 44 has a first orifice passage 46 corresponding to a damping orifice for contributing to vibration damping in a low frequency range.
And a second orifice passage 47 serving as an orifice passage for a specific frequency. The orifice passage 41 having a variable flow rate is constituted by these.

The first orifice passage 46 extends helically along the outer periphery of the orifice member 44 in the thickness thereof, and communicates the main liquid chamber 11 and the sub liquid chamber 12 with an opening (not shown). I have. Reference numeral 46a denotes the first orifice passage 4.
Reference numeral 46 denotes an inlet, 46b denotes an outlet, 47a denotes an inlet of the second orifice passage 47, and 49 denotes an outlet. FIG. 5 shows a sectional line corresponding to the sectional shape of the orifice passage in FIGS.

The second orifice passage 47 is formed inside the first orifice passage 46 so as to penetrate the front and back of the orifice member 44, and is directed to an outlet 49 formed at a substantially central portion of the upper cup-shaped member 43. As a result, a guide slope 48 is formed so as to generate an oblique streamline in the liquid flowing out of the outlet 49.

The shape of the opening of the outlet 49 is also asymmetric with respect to the center line C, and is wide open in the streamline direction due to the guide inclined surface 48. The outlet 49 is formed integrally with the center of the diaphragm 9. The opening / closing section 51 is capable of opening and closing freely.

The opening / closing section 51 of the diaphragm 9 has an outlet 49
It has a flat contact surface in the center to sit tightly around the periphery of the vehicle. The opening of the opening / closing section 51 is ensured when the liquid flowing out of the outlet 49 presses a position obliquely streamlined and offset from the center.

The additional section 30 includes a lower cup-shaped member 52 and a drive section 42 fitted therein so as to form a sealed space 53. The drive section 42 has a pressing section 54, which is the top, of which is opened and closed. The portion 51 is pressed from below in the figure, and is urged in a closing direction by a return spring 55.

The inside of the closed space 53 is connected to a negative pressure source (not shown) via a connecting pipe 56 at the bottom, and by applying a negative pressure to the inside of the closed space 53, the pressing portion 54 is opposed to the return spring 55. The opening and closing portion 51 is made free to open the outlet 49 of the second orifice passage 47.

The opening and closing of the drive section 42 can be set at an arbitrary specific frequency. In this embodiment, the drive section 42 is set to open at the idling frequency, and the second orifice passage 47 is an idle orifice. The opening and closing of the drive unit 42 can be performed not only by using the negative pressure as described above, but also by various known methods such as an electromagnetic method.

Thus, the elasticity control mechanism 40
Is provided, the driving unit 42 is lowered during idling, the opening / closing unit 51 is separated from the outlet 49, and the second orifice passage 47
, The dynamic spring constant in the idle region can be rapidly reduced to a low dynamic spring, and in combination with the use of the medium-high frequency device 17, the dynamic spring constant in the low frequency region, the medium frequency region, and almost the entire region of the high frequency region Low dynamic spring can be realized.

The lower cup-shaped member 52 includes a cup-shaped metal fitting 57 having a large opening formed in the center of the bottom, and a resin part 58 that covers the bottom from the lower half of the side surface and integrally forms the connecting pipe 56.
A fixing ring 60 for fixing the driving section 42 is press-fitted inside the peripheral wall of the cup-shaped fitting 57.

FIG. 7 is an enlarged view of a cross section of the driving section 42 in FIG. 5. The driving section 42 has a substantially falling cup shape, and a rubber portion is provided between a flange portion 54b formed below and a fixing ring 60. Drive unit elastic body 6 made of an elastic member such as
They are linked by one. The driving unit elastic body 61 is
2 does not have enough spring elasticity to affect the operation.

A part of the driving portion elastic body 61 integrated with the fixing ring 60 forms an upper end covering portion 61b for covering the upper end portion of the small diameter portion 60a formed on the upper portion of the fixing ring 60, and further from here. An outer peripheral coating portion 61a that wraps around the outer peripheral side for coating is formed. The outer peripheral covering portion 61a and the upper end covering portion 61b are formed on the entire periphery, and these constitute an elastic covering member in the present invention.

A first seal lip 62a projecting radially is formed integrally on the outer peripheral surface of the outer peripheral covering portion 61a. In addition, the drive unit elastic body 61 inside the lower end of the fixing ring 60
A second seal lip 62b is formed to protrude downward from the lower end of the second seal lip 62b. These sealing lips 62a and 62b
Are formed all around.

As is apparent from FIGS. 1, 3, 4 and 6, a lower extension 8a which forms a part of the tubular outer cover 8 and extends downward from the main body elastic member 3 in the downward direction in FIG. The large diameter portion 8b has the orifice portion 42 accommodated therein, and the partition member 10 is fixed by a first caulking portion 63 formed at the lower end of the large diameter portion 8b.

The upper end of the positioning ring 64 is sandwiched between the large diameter portion 8b and the peripheral wall of the upper cup-shaped member 43. The positioning ring 64 forms a step 65 below the upper cup-shaped member 43, and the cup-shaped metal fitting 57 extends downward therefrom.
It has a small-diameter portion having an outer diameter approximately equal to the inner circumference.

The outer peripheral edge of the diaphragm 9 and the outer peripheral portion of the bottom of the upper cup-shaped member 43 are supported inside the step 65, and are caulked from the outside by the first caulking section 63. Makes the outer peripheral portion of the diaphragm 9 adhere to the bottom portion of the upper cup-shaped member 43, so that the sub-liquid chamber 12 and the main liquid chamber 11 are kept liquid-tight.

The lower end portion of the positioning ring 64 forms a flange portion 66 which is bent inward, and is a part of the driving portion elastic body 61, and the upper end covering portion 61 which covers the upper end portion of the fixing ring 60.
It is positioned by being elastically pressed against b.

On the other hand, the upper end of the cup-shaped fitting 57 is also
5, a flange portion 67 which bends outward here, and a large-diameter portion 8b
Is fixed by a second caulking portion 68 provided at the second position. A slight gap 69 (FIG. 3) is formed between the flange portion 67 of the cup-shaped fitting 57 and the first caulking portion 63.

FIG. 6 is a view showing the side surface shape of the cylindrical outer cover 8 before being coupled to the drive section 42 from the direction indicated by the arrow Y in FIG. 2. The cylindrical outer cover 8 is composed of the main body elastic member 3 and the like. The first and second coupling projections 63a and 68a are provided below the large-diameter portion 8b in a state of being integrated with each other, and project downward in a substantially claw-like manner.

The first and second coupling projections 63a and 68a
Are portions for forming the first and second caulking portions 63 and 68 by bending each lower end portion. Each of the portions has a different height from the lower end portion of the large-diameter portion 8b so as to have a different height. And are alternately formed at appropriate intervals in the circumferential direction.

FIG. 8 is an enlarged view of a portion F in FIG. 3. As is apparent from FIG. 8, the outer diameter of the lower portion of the fixing ring 60 is smaller than the inner diameter of the cup-shaped metal fitting 57, and A slight gap 70 is provided.

The upper end covering portion 6 covering the upper end of the fixing ring 60
1b, radial ventilation grooves 71 are formed at appropriate intervals in the circumferential direction, and the drive section 42 and the diaphragm 9 are formed through an atmosphere opening hole 72 formed through the cup-shaped metal fitting 57 in the vicinity thereof.
(See FIGS. 1, 3 and 4 which are not visible in this drawing.) The internal space 76 is sandwiched between outside air.

The positioning member 6 overlapping the upper end covering portion 61b
The portion near the flange 66 of FIG. 4 forms a step 74 which is further reduced in diameter and forms a slight gap 73 between itself and the inner periphery of the cup-shaped fitting 57, and a through hole 75 is provided therein. The internal space 76 sandwiched between the drive unit 42 and the diaphragm 9 and the atmosphere opening hole 72 are communicated with each other via 75. The lower portion of the atmosphere opening hole 72 is provided at a position lower than the ventilation groove 71.

Next, the operation of this embodiment will be described. FIG. 1 shows how to assemble the main body 20 and the additional part 30. First, the partition member 10 is accommodated in the large diameter part 8b and caulked by the first caulking part 63. As a result, the liquid ring mount is integrated into a small set,
No liquid leakage will occur during subsequent handling.

Subsequently, the driving portion 42 is placed under the partition member 10, the flange portion 66 is brought into contact with the upper end of the fixing ring 60, and then the second caulking portion 68 is caulked to the flange portion 67. Assembled.

At this time, the positioning ring 64 can determine the mounting position of the driving section 42 with respect to the partition member 10, and is elastically pressed against the fixing ring 60 via the upper end covering section 61b, and A gap 69 is provided between the caulking portion 63 and the flange portion 67 of the cup-shaped fitting 57.
Therefore, even if there is a slight dimensional tolerance, this can be easily absorbed.

Further, in this embodiment, the partition member 10 in which the liquid is sealed is separated from the drive section 42 for operating the valve by negative pressure, so that they can be individually fixed in a separate step. Becomes easier. At the same time, it is possible to reliably prevent the sealed liquid from entering the drive unit 42 side and reaching the drive center such as a negative pressure tank or the like.
As a result, quality can be improved.

Further, the partition member 10 and the drive section 42 are fixed by the first caulking portion 63 and the second caulking portion 68 formed by the two types of first and second connecting projections 63a and 68a provided on the large diameter portion 8b. Therefore, the number of parts can be reduced and the fixing structure and the assembling process can be simplified.

At this time, a gap 69 is formed between the flange portion 67 of the cup-shaped fitting 57 and the first caulking portion 63,
In addition, since the flange 66 at the lower end of the positioning ring 64 is pressed against the elastic upper end covering portion 61b, the dimensional tolerance in the height direction (the mounting direction parallel to the center line C) can be absorbed.

Note that the positioning ring 64 is used for the partition member 1.
The mounting position of the drive unit 42 with respect to the position 0 can be determined. Therefore, dimensional control can be made rougher than before, and the assembling work can be facilitated, and the cost can be reduced.

Also, a fixing ring 6 for fixing the driving section 42
Since a small gap 70 is provided between the lower part of the cup-shaped fitting 57 and the inner face of the cup-shaped fitting 57, the fixing ring 60 is fitted to the inner face of the cup-shaped fitting 57 through the elasticity of the outer peripheral coating portion 61a. When the ring 60 is fitted into the cup-shaped fitting 57, it can be fitted with a low load.

For this reason, the capital investment for the press-fitting machine can be reduced, and the fixing ring 60 can
1a is elastically in contact with the inner surface of the cup-shaped fitting 57, and the presence of the gap 70 can absorb the dimensional tolerance in the radial direction, so that the dimensional control can be made rougher than before and the assembling work is easier. And cost reductions are possible.

Further, the fixing ring 60 is pressed against the inner surface of the cup-shaped fitting 57 by the first seal lip 62a,
The fixing ring 60 is pressed against the bottom of the cup-shaped fitting 57 by the second seal lip 62b.
Has a double sealing structure, the airtightness in the sealed space 53 to which a negative pressure is applied can be increased, and the operation accuracy can be improved.

Further, since the ventilation groove 71 and the through hole 75 communicate with the atmosphere opening hole 72 via the gap 73 formed on the entire circumference, the inside space 76 between the driving section 42 and the diaphragm 9 is formed. Can escape to the outside air.

As a result, the orifice resonance effect can be maximized by smoothing the movement of the diaphragm 9, and the atmospheric pressure is maintained even if the thermal expansion or contraction of the air in the internal space 53 occurs. Can reduce the influence on the characteristics of the device and stabilize the performance. In addition, since the lower part of the atmosphere opening hole 72 is provided at a position lower than the ventilation groove 71, water entering from the atmosphere opening hole 72 is less likely to accumulate in the ventilation groove 71 and the through hole 75.

In addition, the fixing ring 60 and the positioning ring 64 are provided at any position in the circumferential direction with respect to the cup-shaped fitting 57, respectively.
Can communicate with the atmosphere opening hole 72 through the gap 73. Therefore, the relative position of the fixing ring 60 and the positioning ring 64 in the circumferential direction with respect to the cup-shaped metal fitting 57 can be freely set, and assemblability is improved.

It should be noted that the present invention is not limited to the above-described embodiment, but can be applied in various ways. For example, the additional portion 30 can be changed to any other structure. That is, instead of the additional portion 30 having the built-in elasticity control mechanism of the previous embodiment, if a simple cup-shaped additional portion is attached by the second caulking portion 68, the elasticity control mechanism externally attached to this additional portion is used. The second orifice 47 can be opened and closed, and the elastic control mechanism can be changed without changing the liquid seal structure.

Furthermore, regardless of the presence or absence of the elastic control mechanism, only the additional portion can be variously changed to one having a different shape or the like. In this case, the additional portion is added after the main body of the liquid seal structure is assembled. Since it is possible to assemble, only the main body can be produced in anticipation and the mass productivity is increased.

The first caulking portion 6 is formed by changing the partitioning member 10 to one having only an orifice passage or an elastic partitioning member having an elastically deformable elastic membrane member.
3 and the simple cup-shaped diaphragm guard or the like may be attached by the second caulking portion 68 as an additional portion.

In this manner, engine mounts having various different types can be manufactured while many of the main body parts except for the diaphragm and the partition member are made common, so that parts can be made common and manufacturing costs can be reduced. It can be cheap.

[Brief description of the drawings]

FIG. 1 is a diagram showing how to assemble an engine mount according to an embodiment.

FIG. 2 is a plan view of the engine mount.

FIG. 3 is an overall sectional view corresponding to line 3-3 in FIG. 2;

FIG. 4 is a front sectional view corresponding to line 3-4 in FIG.

FIG. 5 is a diagram showing a plan view shape of an orifice passage.

FIG. 6 is a side view of the main body.

FIG. 7 is a sectional view of a driving unit.

FIG. 8 is an enlarged sectional view of a portion F in FIG. 3;

[Explanation of symbols]

1: first support member, 2: second support member, 3: body elastic member, 4: conical portion, 7: thin portion, 8: cylindrical jacket,
10: Partition member, 14: Orifice passage, 17: Mid-high frequency device, 20: Main unit, 30: Additional unit, 40: Elastic control mechanism, 41: Orifice passage, 42: Drive unit, 54: Pressing unit, 60: Fixing ring, 61: drive unit elastic body, 63: first caulking portion, 63a: first coupling protrusion, 64: positioning ring, 68: second caulking portion,
68a: second coupling projection

Claims (6)

[Claims] 1. A main liquid chamber at least partially constituted by a main body elastic member having a recessed space and a sub liquid chamber at least partially constituted by a diaphragm are separated by a partition wall and communicated through an orifice passage. The liquid seal mount includes a main body including the main body elastic member, the partition wall, and the diaphragm, and an additional portion attached to the diaphragm side. First and second connecting protrusions having different sizes are provided, the partition wall and the diaphragm are connected by the first connecting protrusion, and the additional member is connected by the second connecting protrusion. Liquid ring mount. 2. The apparatus according to claim 1, wherein the additional portion includes a cup-shaped member that covers the outside of the diaphragm, and an opening edge of the cup-shaped member is provided with a predetermined gap from a fixing portion formed by the first coupling protrusion. In order to fix the connecting portion with the connecting protrusion and position the additional portion with respect to the main body, a positioning ring is protruded from the cylindrical jacket metal fitting side, and the protruding end portion is inserted into the cup-shaped member to be internally 2. The liquid ring mount according to claim 1, wherein the mount is pressed against an elastic member provided on the mount. 3. A part of the positioning ring is provided with a small-diameter portion that forms a gap around the entire circumference with the inner peripheral surface of the cup-shaped member, and an atmosphere opening hole provided in the cup-shaped member through the gap.
The liquid ring mount according to claim 3, wherein a space between the diaphragm and the drive unit is communicated. 4. The apparatus according to claim 1, wherein the additional section includes a drive section in an elastic control mechanism for opening and closing the sub-liquid chamber side opening of the orifice passage by the diaphragm. Liquid ring mount. 5. The addition section includes the drive section and a cup-shaped member for accommodating the drive section, wherein the drive section presses against the diaphragm and allows movement of the press section. In order to achieve this, the outer peripheral portion is provided with a driving elastic portion having an inner peripheral side integrated therewith, and a fixing ring having an outer peripheral side integrated with the driving elastic portion. At least a part of the outer peripheral side of the fixing ring is a driving elastic portion. A first seal lip which is covered with a continuous elastic covering portion, protrudes toward the outer peripheral side of the fixing ring and is pressed against the inner peripheral surface of the cup-shaped member, and a second seal lip which is pressed against the bottom of the cup-shaped member. The liquid ring mount according to claim 4, further comprising a seal lip. 6. The fixing ring has a small-diameter portion and a large-diameter portion, a gap is provided between the outer peripheral surface of the large-diameter portion and the inner peripheral surface of the cup-shaped member, and the elastic covering portion is provided on the outer periphery of the small-diameter portion. 6. The liquid ring mount according to claim 5, wherein the elastic coating portion is formed and brought into contact with the inner peripheral surface of the cup-shaped member.