JP2005188724A - Liquid sealed vibration control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid sealed vibration control device for hardly causing abnormal noises and easily damping vibration of both great amplitude and fine amplitude. <P>SOLUTION: The liquid sealed vibration control device comprises a first mounting tool 1, a second mounting tool 2, a vibration controlling base 3, a diaphragm 9, a partition body 12, and an orifice 25. The partition body 12 consists of a metal thin plate partition plate 15 having an outer peripheral portion covered with a rubber member 18 and a pair of clamping members 16, 17. The rubber member 18 consists of a first rubber portion 81, a second rubber portion 82 and a third rubber portion 83. One clamping member 16 has a first stopper face 85A and a second stopper face 85B, while the other clamping member 17 has a third stopper face 86A and a fourth stopper face 86B. An outer peripheral edge 80 of the partition plate 15 is located on the radially outward side of an inner peripheral face 89 at the side of recessed portions 111, 112 of the pair of clamping members 16, 17. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention includes a first fixture, a cylindrical second fixture, a vibration isolating base made of a rubber-like elastic material for connecting them, and a vibration isolating base attached to the second fixture. A diaphragm for forming a liquid sealing chamber, a partition for partitioning the liquid sealing chamber into a first liquid chamber on the vibration-proof base side and a second liquid chamber on the diaphragm side, the first liquid chamber and the second liquid chamber The present invention relates to a liquid-filled vibration isolator having an orifice that communicates with the liquid.

  The liquid-filled vibration isolator is provided between an automobile engine and a body frame, for example. Conventionally, in this type of liquid-filled vibration isolator, the partition body is attached to a partition member made of a disk-shaped rubber material whose center in the radial direction is swelled thickly, and to the second fixture side, and the periphery of the partition member A pair of circular ring-shaped clamping members that clamp and fix the portion in the axial direction of the partition member, and one clamping member is a first capable of receiving the peripheral portion of the partition member from one side in the axial direction The stopper part was provided in the inner peripheral part, and the other clamping member was provided with the second stopper part in the inner peripheral part capable of receiving the peripheral part of the partition member from the other side in the axial direction [see Patent Document 1]. .

When vibration with a small amplitude occurs, the liquid does not flow through the orifice between the first liquid chamber and the second liquid chamber, and the internal pressure (hydraulic pressure) of the first liquid chamber is transmitted to the partition member, and the partition member Reciprocates and absorbs the internal pressure of the first liquid chamber to attenuate the vibration with a small amplitude. When large amplitude vibration occurs and the internal pressure of the first liquid chamber reaches a predetermined value, the peripheral edge of the partition member is received by the first stopper portion or the second stopper portion of the pair of clamping members, and the displacement is limited, The liquid flows through the orifice and between the two liquid chambers. The vibration of large amplitude is attenuated by the liquid flow effect.
Japanese Patent No. 2857462

  In the liquid-filled vibration isolator, if the partition member is too easily deformed following the change in the internal pressure of the first liquid chamber, the partition member is subjected to displacement restriction (deformation restriction) when large amplitude vibration occurs. Since the liquid becomes difficult to pass through the orifice, the partition member has a shape in which the central portion in the radial direction swells thickly as described above, and the rigidity is increased to some extent. However, according to the conventional configuration, since the partition member is made of rubber, the displacement regulation of the partition member may be insufficient even though the partition member is formed in a shape in which the radial center side swells thickly. In some cases, even if the internal pressure of the first liquid chamber reaches a target value, the liquid does not pass through the orifice, and it becomes difficult to attenuate large-amplitude vibrations.

  There has also been proposed a liquid-filled vibration damping device in which the partition body is composed of an elastic partition film as a partition member and a pair of lattice members that restrict the amount of displacement of the elastic partition film from both sides. Then, the elastic partition film and the lattice member collide with each other, and abnormal noise is likely to occur. In addition, the opening for transmitting the internal pressure of the first liquid chamber to the elastic partition membrane is narrowed by the amount of the lattice portion, making it difficult to absorb the internal pressure of the first liquid chamber.

  The present invention has been made in view of the above circumstances, and the purpose thereof is a liquid-filled type anti-vibration that can make it difficult for abnormal noise to occur and can easily attenuate both large and small amplitude vibrations. The point is to provide a device.

The present invention is characterized in that a first mounting tool, a cylindrical second mounting tool, a vibration isolating base made of a rubber-like elastic material connecting them, and a vibration isolating base mounted on the second mounting tool, A diaphragm for forming a liquid sealing chamber therebetween, a partition for partitioning the liquid sealing chamber into a first liquid chamber on the vibration isolation base side and a second liquid chamber on the diaphragm side, the first liquid chamber and the second liquid chamber A liquid-filled vibration isolator having an orifice for communicating with a liquid chamber,
The partition body includes a partition plate made of a thin metal plate whose outer peripheral portion is covered with a rubber member, and a pair of rings that are attached to the second fixture side and sandwich and fix the rubber member in the axial direction of the partition plate. Formed of a pinching member
The rubber member includes a first rubber portion positioned radially inward from the outer peripheral edge of the partition plate, and is positioned radially outward from the outer peripheral edge of the partition plate and constricted in the axial direction. A second rubber part, and a third rubber part that is positioned on the radially outer side of the second rubber part and rises in the axial direction, and is sandwiched between the pair of clamping members,
The inner peripheral portions of the pair of sandwiching members are formed in a concavo-convex shape in the circumferential direction, and the positions in the circumferential direction of the recesses of one sandwiching member and the recesses of the other sandwiching member are aligned, and the projecting portions of the one sandwiching member And the position in the circumferential direction of the convex part of the other clamping member are matched,
The one holding member includes a first stopper surface capable of receiving the first rubber portion from one side in the axial direction on the concave and convex inner peripheral portion, and the other holding member is provided in the axial direction. A second stopper surface capable of receiving the first rubber portion from the other side is provided on the uneven inner peripheral portion,
The outer peripheral edge of the partition plate is located on the radially outer side with respect to the inner peripheral surface on the concave side of the pair of clamping members.

  According to this configuration, the following effects can be achieved. That is, when vibration with a small amplitude occurs, the liquid does not flow through the orifice between the first liquid chamber and the second liquid chamber, and the internal pressure (fluid pressure) of the first liquid chamber is a partition plate made of a thin metal plate. , The partition plate reciprocates in the axial direction, absorbs the internal pressure of the first liquid chamber, and attenuates the vibration with a small amplitude. When a large amplitude vibration occurs and the internal pressure of the first liquid chamber reaches a predetermined value, the first stopper surface of one clamping member receives the first rubber portion on the outer peripheral side of the partition plate in the axial direction of the partition plate. Or the second stopper surface of the other clamping member receives the first rubber part on the outer peripheral side of the partition plate in the axial direction to limit the displacement of the partition plate, and the liquid passes through the orifice Flows between liquid chambers. The vibration of large amplitude is attenuated by the liquid flow effect.

  The rubber member provided on the outer peripheral portion of the partition plate is positioned on the radially outer side of the outer peripheral edge of the partition plate and the first rubber portion positioned on the radially inner side of the outer peripheral edge of the partition plate. A second rubber part constricted in the axial direction, and a third rubber part which is positioned radially outward from the second rubber part and rises in the axial direction and is clamped by the pair of clamping members Therefore, the partition plate is easily reciprocated and deformed by the action of the second rubber part constricted in the axial direction, and the clamping and fixing is not easily released by the action of the third rubber part.

  The inner peripheral portions of the pair of sandwiching members are formed in a concavo-convex shape in the circumferential direction, and the positions in the circumferential direction of the recesses of the one sandwiching member and the recesses of the other sandwiching member are aligned. The positions in the circumferential direction of the convex portion and the convex portion of the other holding member are matched, and the outer peripheral edge of the partition plate is positioned on the radially outer side of the inner peripheral surface on the concave portion side of the pair of holding members By doing so, since the outer peripheral portion of the partition plate and the pair of clamping members overlap in the axial direction of the partition plate, it becomes easier to receive the partition plate by the first stopper surface and the second stopper surface, Combined with the fact that the partition plate is made of a thin metal plate, it is possible to easily regulate the displacement of the partition plate.

  Further, on the convex portion side of the inner peripheral portion of the clamping member, the distance between the top surface (inner peripheral surface) of the convex portion and the outer peripheral edge of the partition plate located on the radially outward side from the top surface is increased. In addition, the lengths of the first stopper surface and the second stopper surface in the radial direction can be increased, and the displacement of the partition plate can be easily restricted during large amplitude vibration. For example, in a structure in which the inner peripheral portions of the pair of sandwiching members are not formed in an uneven shape (structure in which the inner peripheral surface is flat), the lengths of the first stopper surface and the second stopper surface in the radial direction are the same as described above. If it is made long, it becomes difficult to exert the function of the second rubber part, and it is difficult to reciprocate and deform the partition plate during vibration with a small amplitude. On the other hand, according to the present invention, as described above, the inner peripheral portions of the pair of clamping members are formed in an uneven shape in the circumferential direction, and the concave portion of one clamping member and the concave portion of the other clamping member Since the positions in the circumferential direction are matched, and the positions in the circumferential direction of the convex part of the one clamping member and the convex part of the other clamping member are matched, on the concave side, the bottom surface (inner circumferential surface) of the concave part and this The distance from the outer peripheral edge of the partition plate located on the radially outer side from the bottom surface can be shortened, the lengths of the first stopper surface and the second stopper surface in the radial direction can be shortened, and the second The function of the rubber part can be easily exhibited, and the partition plate can be easily reciprocated and deformed at the time of vibration with a small amplitude.

  Thus, until the partition plate is received by the first stopper surface and the second stopper surface, the partition plate smoothly reciprocates due to the action of the constricted second rubber portion, and once the first stopper surface and the second stopper are formed. When it is received by the surface, it becomes difficult to reciprocate.

  As a result, when a slight amplitude occurs, the internal pressure of the first liquid chamber can be sufficiently absorbed to attenuate the vibration, and when a large amplitude occurs and the first liquid chamber reaches a desired internal pressure, It is possible to make the liquid flow smoothly through the orifice so as to easily attenuate large amplitude vibration.

  For example, when the partition body is composed of an elastic partition film and a pair of lattice members that regulate the displacement amount of the elastic partition film from both sides, the lattice member and the elastic partition film collide with each other, and noise is likely to occur. At the same time, the opening for transmitting the internal pressure of the first liquid chamber to the elastic partition membrane is narrowed by the lattice portion, making it difficult to absorb the internal pressure of the first liquid chamber. As a result, it is difficult to achieve a low dynamic spring when high frequency and small amplitude vibration is input, but according to the present invention, it is possible to prevent the occurrence of the abnormal noise described above, The opening can be enlarged to easily absorb the internal pressure, and when a vibration with high frequency and small amplitude is input, a low dynamic spring can be achieved.

  In the present invention, the one holding member includes a third stopper surface capable of receiving the second rubber portion from one side in the axial direction, and the other holding member is provided from the other side in the axial direction. When the 4th stopper surface which can receive 2 rubber parts is provided, it will become easy to carry out displacement regulation of a partition plate more.

In the present invention, the first rubber portion and the second rubber portion are formed in a taper shape that is smoothly connected and thinned toward the radially outer side,
The first stopper surface, the second stopper surface, the third stopper surface, and the fourth stopper surface are set to be inclined surfaces parallel to the tapered surfaces of the first rubber portion and the second rubber portion, and are close to the tapered surface. In this case, the tapered surface and each stopper surface can be softly brought into contact with each other, and noise can be more easily prevented.

  According to the present invention, the concave portion and the convex portion of the inner peripheral portion of the clamping member are rectangular, and each convex portion is positioned with a certain interval in the circumferential direction, and each concave portion has a certain interval in the circumferential direction. It can be configured in a structure that is located at a distance.

  In the present invention, the orifice is formed between the outer peripheral portion of the pair of clamping members and the inner peripheral portion of the second fixture, and the second fixture portion on the radially outer side of the pair of clamping members is enlarged. When the diameter is set and the whole or a part of the orifice is located on the radially outer side with respect to the inner peripheral surface of the first liquid chamber, the following action can be achieved.

  That is, the partition plate can be formed to have a larger diameter than the structure that is not expanded in diameter, and the partition body can be formed to have a large diameter, so that the partition plate and the partition body for the liquid in the first liquid chamber can be formed. The pressure receiving area can be increased. As a result, it becomes easy to absorb the internal pressure of the first liquid chamber, and it becomes easy to achieve a low dynamic spring in a high frequency range. And since the said 2nd attachment tool part was only diameter-expanded, the enlargement of a 2nd attachment tool can be suppressed.

  In the present invention, when a stirring plate is provided in the first liquid chamber, and a first liquid chamber side orifice is formed between the outer peripheral edge of the stirring plate and the inner peripheral surface of the first liquid chamber, The liquid flowing through the one liquid chamber side orifice can be resonated in a higher high frequency range (the resonance frequency of the liquid is set to a higher value), and the low dynamic spring of the apparatus can be reduced in a higher high frequency range. Can be planned.

  According to the present invention, it is possible to provide a liquid-filled vibration isolator capable of making it difficult for abnormal noise to occur and facilitating attenuation of both large amplitude and fine amplitude.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a liquid-filled vibration isolator. This device includes a plate-shaped first mounting bracket 1 attached to an automobile engine via a mounting bolt 6, a cylindrical second mounting bracket 2 attached to a vehicle body frame below the engine via a mounting bolt 6, And an anti-vibration base 3 made of a rubber-like elastic material for connecting them.

  The second mounting bracket 2 includes an upper cylindrical bracket 4 on which the vibration-proof base 3 is vulcanized and a cup-shaped lower bottom bracket 5 that covers a diaphragm 9 described later. The anti-vibration base 3 is formed in a truncated cone shape, and the upper end surface thereof is vulcanized and bonded to the first mounting bracket 1 and the lower end portion thereof is vulcanized and bonded to the upper end opening portion of the tubular bracket 4 that extends upward. An upper constricted hollow portion is formed on the lower surface portion of the vibration isolating substrate 3, and a rubber film 7 covering the inner peripheral surface of the cylindrical metal fitting 4 is connected to the lower end portion of the vibration isolating substrate 3.

  A partial spherical diaphragm 9 made of a rubber film that forms a liquid sealing chamber 8 is attached to the second mounting bracket 2 between the lower surface of the vibration isolating base 3 and the liquid is sealed in the liquid sealing chamber 8. Then, a partition body 12 that partitions the liquid sealing chamber 8 into a first liquid chamber 11A on the vibration-isolating base 3 side and a second liquid chamber 11B on the diaphragm side, and an orifice 25 that allows the first liquid chamber 11A and the second liquid chamber 11B to communicate with each other. And are provided.

  The partition body 12 includes a partition plate 15 made of a circular thin metal plate whose entire outer periphery is covered with a rubber member 18, and a pair of upper and lower circles that clamp and fix the rubber member 18 in the axial direction (vertical direction) of the partition plate 15. It consists of ring-shaped clamping members 16 and 17. Both the clamping members 16 and 17 are fitted into the second fixture part 100 on the radially outer side of the pair of clamping members 16 and 17, and a support disk 14 on the cylindrical metal fitting 4 side and a flange 103 to be described later. It is pinched and fixed by.

  As shown in FIGS. 4 and 5, the rubber member 18 includes a first rubber portion 81 positioned radially inward of the outer peripheral edge 80 of the partition plate 15 and a radial direction of the outer peripheral edge 80 of the partition plate 15. A second rubber portion 82 that is located on the outer side and is constricted in the axial direction, and a pair of sandwiching members that are located on the radially outer side of the second rubber portion 82 and rise on both sides in the axial direction And a third rubber portion 83 sandwiched between 16 and 17.

  The first rubber portion 81 (specifically, the first rubber portion on the radially outer side) and the second rubber portion 82 are smoothly connected to each other and formed in a tapered shape that is thinner toward the radially outer side. The rising end portion 83 is formed in an arc shape in the longitudinal section. As shown in FIG. 1, the pair of clamping members 16 and 17 are fitted to each other in the axial direction. The orifice 25 is provided between the inner peripheral part (specifically, the rubber film 7) of the second fixture part 100 into which the pair of sandwiching members 16 and 17 are fitted and the outer peripheral part of the pair of sandwiching members 16 and 17. The second liquid chamber 11B is formed and communicated with the first liquid chamber 11A through the notch 19 of one of the holding members 16 (hereinafter referred to as the “upper holding member 16”) and through the opening 58 of the support disc 14. Communicated with.

  As shown in FIG. 2, the inner peripheral part of a pair of clamping members 16 and 17 is formed in a concavo-convex shape in the circumferential direction, and the concave part 111 and the other of one clamping member 16 (hereinafter referred to as “upper clamping member 16”) Of the holding member 17 (hereinafter referred to as “lower holding member 17”) in the circumferential direction with the concave portion 112, and the circumference of the convex portion 113 of one clamping member 16 and the convex portion 114 of the other clamping member 17. The position in the direction is matched. That is, when viewed in the axial direction, both concave portions 111 and 112 and both convex portions 113 and 114 overlap each other.

  The concave portions 111 (112) and the convex portions 113 (114) on the inner peripheral portion of the sandwiching member 16 (17) are rectangular, and the concave portions 111 (112) are positioned at regular intervals in the circumferential direction. (114) are located at regular intervals in the circumferential direction. In other words, eight concave portions 111 (112) and eight convex portions 113 (114) are arranged at an angle of 45 ° in the circumferential direction.

  As shown in FIGS. 4 and 5, the upper clamping member 16 receives the first stopper surface 85 capable of receiving the first rubber portion 81 and the second rubber portion 82 from one side (upper side) in the axial direction. A third stopper surface 108 that can be stopped is provided on the concave and convex inner peripheral portion, and the other holding member 17 is a second member that can receive the first rubber portion 81 from the other side (lower side) in the axial direction. A stopper surface 86 and a fourth stopper surface 109 capable of receiving the second rubber portion 82 are provided on the uneven inner peripheral portion.

  The first stopper surface 85, the third stopper surface 108, the second stopper surface 86, and the fourth stopper surface 109 are set to be inclined surfaces parallel to the tapered surfaces 87 and 88 of the first rubber portion 81 and the second rubber portion 82. And is close to the tapered surfaces 87 and 88. The distance between the first to fourth stopper surfaces 85, 86, 108, 109 and the tapered surfaces 87, 88 can be set to 0.1 mm to 0.3 mm, for example.

  As shown in FIG. 6, the upper clamping member 16 includes an annular groove 90 having an arcuate cross section for fitting the upper half portion of the third rubber portion 83 of the partition plate 15, and the lower clamping member 17 includes a third clamping member 17. An annular step 91 for fitting the lower half of the rubber part 83 is provided. An extended peripheral wall portion 92 extends downward from the outer peripheral wall of the clamping member 16 forming the annular groove 90, and an inner peripheral surface 93 of the extended peripheral wall 92 extends the outer peripheral surface of the third rubber portion 83 in the radially outward direction. It is received from the side. The lower end portion of the extending peripheral wall 92 is externally fitted to the fitting cylinder portion 94 on the upper end side of the lower holding member 17.

  As shown in FIG. 5, the outer peripheral edge 80 of the partition plate 15 is located on the radially outer side with respect to the inner peripheral surface 89 on the concave portion 111 (112) side of the pair of clamping members 16 and 17, The outer peripheral portion of the partition plate 15 overlaps with the pair of clamping members 16 and 17 in the axial direction view (plan view) of the partition plate 15.

  The length L in the radial direction of the overlapping portion of the outer peripheral portion of the partition plate 15 and the concave portions 111 and 112 of the pair of clamping members 16 and 17 (see FIG. 5, the partition plate from the inner peripheral surface 89 of the concave portions 111 and 112) 15 to the outer peripheral edge 80) can be set to 2 mm to 6 mm, for example. The inner circumferential surface 89 of the upper clamping member 16 and the inner circumferential surface 89 of the lower clamping member 17 are located at the same position in the radial direction. Further, the radial length L of the overlapping portion between the outer peripheral portion of the partition plate 15 and the convex portions 113 and 114 of the pair of clamping members 16 and 17 (see FIG. 4, the inner peripheral surface of the convex portions 113 and 114). 89 to the outer peripheral edge 80 of the partition plate 15) can be set to 4 mm to 12 mm, for example. The inner circumferential surface 89 of the upper clamping member 16 and the inner circumferential surface 89 of the lower clamping member 17 are located at the same position in the radial direction.

  The diameter of the second fixture part 100 on the radially outer side of the pair of clamping members 16 and 17 is increased, and the entire orifice 25 (or a part thereof) may be the inner peripheral surface 62 ( Specifically, it is located on the radially outer side from the straight cylindrical inner peripheral surface 68) of the inner peripheral surface 62 of the first liquid chamber 11A. The second fixture portion 100 and the second fixture portion 102 on the vibration isolator base 3 side are divided into two in the axial direction, and the flange 103 on the upper end side of the second fixture portion 100 and The flange 104 of the second fixture portion 102 on the vibration base 3 side is welded and fixed to each other in the vertical direction. For example, press molding may be performed integrally without dividing both the second attachment parts 102.

  The support disc 14 is caulked and fixed together with the mounting plate 10 of the diaphragm 9, the cylindrical fitting 4 and the bottom fitting 5.

[Second Embodiment]
As shown in FIG. 7, the liquid-filled vibration isolator of the second embodiment is different from the liquid-filled vibration isolator of the first embodiment in that a disc-shaped stirring plate 60 is provided. The structure is the same. Hereinafter, the structure of the stirring plate 60 will be described.

  The stirring plate 60 is provided in the first liquid chamber 11A, and a first liquid chamber side orifice 63 is formed between the outer peripheral edge 61 of the stirring plate 60 and the inner peripheral surface 62 of the first liquid chamber 11A. Yes. That is, the connecting portion 66 on the center side of the stirring plate 60 is supported and connected to one end portion 65 (lower end portion) of the support shaft 64 that passes through the vibration isolation base 3 and is connected to the first fixture 1. The connecting portion 66 bulges upward. The mounting bolt 6 on the first mounting bracket 1 side is formed integrally with the support shaft 64.

  The anti-vibration base 3 is vulcanized and bonded to the support shaft 64, and the connecting portion 66 on the center side of the stirring plate 60 is caulked and fixed to one end portion 65 of the support shaft 64. The inner peripheral surface 62 of the first liquid chamber 11A is composed of a tapered surface 67 having a smaller diameter on the side farther from the partition 12 and a straight body surface 68 that is connected to the maximum diameter portion of the tapered surface 67 and has a constant diameter. The size and position of the stirring plate 60 are set so that the first liquid chamber side orifice 63 is formed between the tapered surface portion 69 near the maximum diameter portion. The stirring plate 60 is parallel to the partition plate 15.

[Another embodiment]
The present invention (the liquid-filled vibration isolator of the first embodiment and the second embodiment) can also be applied to a structure in which the diameter of the second fixture part 100 is not expanded. And it is applicable also to the liquid filling type vibration isolator provided between a transmission and a vehicle body frame.

Longitudinal section of liquid-filled vibration isolator Top view of a pair of clamping members in a fitted state Side view of a pair of clamping members in a fitted state B-O cross section of FIG. AO cross section of FIG. Exploded longitudinal sectional view of partition Longitudinal sectional view of the liquid filled type vibration damping device of the second embodiment

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st fixture 2 2nd fixture 3 Anti-vibration base | substrate 8 Liquid enclosure chamber 9 Diaphragm 11A 1st liquid chamber 11B 2nd liquid chamber 12 Partition body 15 Partition plate 16 Clamping member (one clamping member)
17 Clamping member (the other clamping member)
18 Rubber member 25 Orifice 62 Inner peripheral surface of first liquid chamber 63 First liquid chamber side orifice 80 Outer peripheral edge of partition plate 81 First rubber part 82 Second rubber part 83 Third rubber part 84 Orifice formation groove 85 First stopper Surface 86 Second stopper surface 87, 88 Tapered surface 89 Inner peripheral surface of the holding member on the recessed portion 100 Second attachment portion 108 Third stopper surface 109 Fourth stopper surface 111 Recessed portion of one holding member 112 The other holding member Concave part 113 Convex part of one clamping member 114 Convex part of the other clamping member

Claims (6)

A liquid enclosure is provided between the first fixture, the cylindrical second fixture, a vibration isolating base made of a rubber-like elastic material for connecting them, and the vibration isolating base attached to the second fixture. Forming a diaphragm, a partition body for partitioning the liquid sealing chamber into a first liquid chamber on the vibration-proof base side and a second liquid chamber on the diaphragm side, and an orifice for communicating the first liquid chamber and the second liquid chamber A liquid-filled vibration isolator comprising:
The partition body includes a partition plate made of a thin metal plate whose outer peripheral portion is covered with a rubber member, and a pair of rings that are attached to the second fixture side and sandwich and fix the rubber member in the axial direction of the partition plate. Formed of a pinching member
The rubber member includes a first rubber portion positioned radially inward from the outer peripheral edge of the partition plate, and is positioned radially outward from the outer peripheral edge of the partition plate and constricted in the axial direction. A second rubber part, and a third rubber part that is positioned on the radially outer side of the second rubber part and rises in the axial direction, and is sandwiched between the pair of clamping members,
The inner peripheral portions of the pair of sandwiching members are formed in a concavo-convex shape in the circumferential direction, and the positions in the circumferential direction of the recesses of one sandwiching member and the recesses of the other sandwiching member are aligned, and the projecting portions of the one sandwiching member And the position in the circumferential direction of the convex portion of the other clamping member are matched,
The one holding member includes a first stopper surface capable of receiving the first rubber portion from one side in the axial direction on the concave and convex inner peripheral portion, and the other holding member is provided in the axial direction. A second stopper surface capable of receiving the first rubber portion from the other side is provided on the concave and convex inner peripheral portion,
A liquid-filled vibration isolator in which an outer peripheral edge of the partition plate is located on the radially outer side with respect to an inner peripheral surface on the concave side of the pair of clamping members.   The one clamping member includes a third stopper surface capable of receiving the second rubber portion from one side in the axial direction, and the other clamping member has the second rubber portion from the other side in the axial direction. The liquid-filled type vibration damping device according to claim 1, further comprising a fourth stopper surface that can be received. The first rubber portion and the second rubber portion are formed in a taper shape that is smoothly connected and thinned toward the radially outer side,
The first stopper surface, the second stopper surface, the third stopper surface, and the fourth stopper surface are set to be inclined surfaces parallel to the tapered surfaces of the first rubber portion and the second rubber portion, and are close to the tapered surface. The liquid-filled vibration isolator according to claim 2.   The concave portion and the convex portion of the inner peripheral portion of the clamping member are rectangular, and each convex portion is located at a constant interval in the circumferential direction, and each concave portion is located at a constant interval in the circumferential direction. The liquid-filled vibration isolator according to claim 1.   The orifice is formed between the outer peripheral portion of the pair of clamping members and the inner peripheral portion of the second fixture, and the second fixture portion on the radially outer side of the pair of clamping members is expanded in diameter, The liquid-filled vibration isolator according to any one of claims 1 to 4, wherein the whole or a part of the orifice is positioned radially outward from the inner peripheral surface of the first liquid chamber. 6. The first liquid chamber-side orifice is provided between the outer peripheral edge of the first liquid chamber and the inner peripheral surface of the first liquid chamber, wherein a stirring plate is provided in the first liquid chamber. The liquid-filled vibration isolator according to claim 1.

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