JP4155941B2

JP4155941B2 - Liquid-filled vibration isolator

Info

Publication number: JP4155941B2
Application number: JP2004121903A
Authority: JP
Inventors: 政昭伊藤
Original assignee: Toyo Tire and Rubber Co Ltd
Current assignee: Toyo Tire Corp
Priority date: 2004-04-16
Filing date: 2004-04-16
Publication date: 2008-09-24
Anticipated expiration: 2024-04-16
Also published as: JP2005308000A

Description

本発明は、液封入式防振装置に関するものである。 The present invention relates to a liquid-filled vibration isolator.

自動車のエンジンを支持固定しつつ、そのエンジン振動を車体フレームへ伝達させないようにする防振装置として、液封入式防振装置が知られている。 A liquid-filled vibration isolator is known as a vibration isolator that supports and fixes an automobile engine and prevents the engine vibration from being transmitted to a vehicle body frame.

この液封入式防振装置は、一般に、エンジン側に取り付けられる第１取付け具と、車体フレーム側に取り付けられる第２取付け具とが、ゴム状弾性体から構成される防振基体で連結される。そして、第２取付け具に取付けられたダイヤフラムにより、そのダイヤフラムと防振基体との間に液封入室が形成される。液封入室は、仕切り手段によって主液室および副液室の２室に仕切られ、これら主液室と副液室とは、オリフィスによって互いに連通される。 In this liquid-filled vibration isolator, generally, a first attachment attached to the engine side and a second attachment attached to the vehicle body frame are connected by an anti-vibration base composed of a rubber-like elastic body. . And the liquid enclosure chamber is formed between the diaphragm and the vibration isolating base by the diaphragm attached to the second fixture. The liquid sealing chamber is divided into two chambers, a main liquid chamber and a sub liquid chamber, by a partitioning means, and the main liquid chamber and the sub liquid chamber are communicated with each other by an orifice.

この液封入式防振装置によれば、オリフィスによる主及び副液室間の流体流動効果や防振基体の制振効果により、振動減衰機能と振動絶縁機能とを果す。 According to this liquid-filled vibration isolator, the vibration damping function and the vibration insulation function are achieved by the fluid flow effect between the main and sub liquid chambers by the orifice and the vibration control effect of the vibration isolating substrate.

ところで、液封入式防振装置の要求特性の一つに、小振幅入力時の低動ばね特性がある。そこで、弾性仕切り膜を主液室と副液室との間に配置し、両液室間の液圧変動を弾性仕切り膜の往復動変形で吸収することで、小振幅入力時の低動ばね特性を得るようにしたいわゆる弾性膜構造や可動膜構造なども知られている（特許文献１）。
特許第２８７５７２３号 Incidentally, one of the required characteristics of the liquid filled type vibration isolator is a low dynamic spring characteristic at the time of small amplitude input. Therefore, an elastic partition membrane is arranged between the main liquid chamber and the sub-liquid chamber, and the hydraulic pressure fluctuation between the two chambers is absorbed by the reciprocating deformation of the elastic partition membrane, so that the low dynamic spring at the time of small amplitude input A so-called elastic film structure or movable film structure that obtains characteristics is also known (Patent Document 1).
Japanese Patent No. 2875723

しかしながら、上述の弾性膜構造などでは、両液室間の液圧変動が吸収され、オリフィスの流体流動効果が低下するため、十分な振動減衰機能を得ることができない。この場合、減衰特性を向上させるには、オリフィスの流路断面積を大きく、流路長さを長くすることが必要とされるが、車体フレームとエンジンとの間のスペースは限られており、防振装置自体の大型化が制限されるため、従来は、オリフィスの流路断面積と流路長さとを十分に拡大、延長することができなかった。 However, in the above-described elastic membrane structure and the like, the fluid pressure fluctuation between the two fluid chambers is absorbed and the fluid flow effect of the orifice is lowered, so that a sufficient vibration damping function cannot be obtained. In this case, in order to improve the damping characteristics, it is necessary to increase the flow path cross-sectional area of the orifice and increase the flow path length, but the space between the vehicle body frame and the engine is limited, Since the size of the vibration isolator itself is limited, conventionally, it has been impossible to sufficiently expand and extend the flow path cross-sectional area and the flow path length of the orifice.

この問題点について、本出願人は、鋭意検討した結果、オリフィス手段を挟持固定する挟持部材の周縁に張出部を形成して、その張出部がオリフィス形成壁を兼用するように構成することで、オリフィスの流路断面積と流路長さとを限られたスペース内に効率的に確保し得ることを見出した。 As a result of diligent study, the applicant of the present invention has formed a projecting portion on the periphery of the clamping member that clamps and fixes the orifice means, and the projecting portion also serves as an orifice forming wall. Thus, it has been found that the channel cross-sectional area and the channel length of the orifice can be efficiently secured in a limited space.

また、本出願人は、上記の構成によれば、オリフィス手段に対する挟持部材の圧入位置（回転方向位置）を変更することで、オリフィスの流路長さの調整を図ることができることも見出した。しかしながら、この場合、圧入作業は、作業者の目視など基づいて行われるため、圧入位置精度が不正確となり、また、作業ミスも発生し易いという問題点のあることが判明した。また、圧入作業後の検査も効率的に行うことができない。 The present applicant has also found that, according to the above configuration, the flow path length of the orifice can be adjusted by changing the press-fitting position (rotational direction position) of the clamping member with respect to the orifice means. However, in this case, since the press-fitting work is performed based on the visual observation of the operator, it has been found that there is a problem that the press-fitting position accuracy becomes inaccurate and an operation mistake is likely to occur. Moreover, the inspection after the press-fitting work cannot be performed efficiently.

本発明は上述した問題点を解決するためになされたものであり、オリフィス手段に対する挟持部材の圧入位置精度の向上を図ると共に、圧入位置不良の発生を抑制し、また、圧入位置不良の検査を効率的に行うことができる液封入式防振装置を提供することを目的としている。 The present invention has been made in order to solve the above-described problems, and it is intended to improve the press-fitting position accuracy of the clamping member with respect to the orifice means, to suppress the occurrence of the press-fitting position defect, and to inspect the press-fitting position defect. It aims at providing the liquid enclosure type vibration isolator which can be performed efficiently.

この目的を達成するために、請求項１記載の液封入式防振装置は、第１取付け具と、筒状の第２取付け具と、その第２取付け具と前記第１取付け具とを連結し、ゴム状弾性材から構成される防振基体と、前記第２取付け具に取付けられて前記防振基体との間に液体封入室を形成するダイヤフラムと、前記液体封入室を前記防振基体側の主液室と前記ダイヤフラム側の副液室とに仕切る仕切り手段と、その仕切り手段の外周面と前記第２取付け具の内周面との間に形成され、前記主液室と副液室とを連通させるオリフィスと、前記仕切り手段を前記防振基体に設けられた仕切り手段受け部との間で挟持固定する挟持部材とを備え、前記仕切り手段は、ゴム状弾性材から構成される弾性仕切り膜と、その弾性仕切り膜を収容して内周面側の格子状の壁部で受け止める筒部材と、その筒部材の一端部側の開口部を覆う格子状の仕切り膜変位規制部材とを備え、前記筒部材の他端部の外径が前記挟持部材の外径よりも小径とされることにより、前記挟持部材の周縁部には、前記筒部材の他端部から張り出す張出部が形成され、その張出部がオリフィス形成壁を兼用するように構成されるものであり、前記挟持部材は、その張出部に開口されるオリフィス出入口と、前記筒部材の他端部側の内周に内嵌圧入される嵌合筒部と、前記第２取付け具内に挿入されてかしめ固定される外周部側平板部とを備え、前記外周部側平板部には、その挟持部材の少なくとも２以上の回転方向位置を識別するための識別手段が設けられ、前記識別手段は、第１切り欠き部と第２切り欠き部とで構成され、前記第１切り欠き部は前記外周部側平板部の外周端を半径方向に凹欠する一つの凹欠部から構成され、前記第２切り欠き部は前記外周部側平板部の外周端を半径方向に凹欠する二つの凹欠部から構成され、前記第１切り欠き部又は前記第２切り欠き部を基準として前記挟持部材を前記筒部材に圧入することにより、前記オリフィスの流路長さが設定されている。 In order to achieve this object, the liquid-filled vibration isolator according to claim 1 connects a first mounting tool, a cylindrical second mounting tool, and the second mounting tool and the first mounting tool. An anti-vibration base composed of a rubber-like elastic material; a diaphragm attached to the second fixture to form a liquid enclosure chamber between the anti-vibration base; and the liquid enclosure chamber as the anti-vibration base. Partition means for partitioning into a main liquid chamber on the side and a sub liquid chamber on the diaphragm side, and formed between an outer peripheral surface of the partition means and an inner peripheral surface of the second fixture, and the main liquid chamber and the sub liquid An orifice that communicates with the chamber; and a clamping member that clamps and fixes the partition means between the partition means receiving portion provided on the vibration-proof base, and the partition means is made of a rubber-like elastic material. Elastic partition membrane and lattice shape on the inner peripheral surface side that accommodates the elastic partition membrane A cylindrical member that is received by the wall, and a lattice-shaped partition film displacement regulating member that covers an opening on one end of the cylindrical member, and the outer diameter of the other end of the cylindrical member is larger than the outer diameter of the clamping member Since the diameter of the clamping member is also small, a protruding portion is formed on the peripheral portion of the clamping member so as to protrude from the other end portion of the cylindrical member, and the protruding portion also serves as an orifice forming wall. The sandwiching member includes an orifice inlet / outlet opening at an overhanging portion thereof, a fitting cylinder portion fitted into the inner periphery on the other end side of the cylinder member, and an inside of the second fixture is inserted into a peripheral portion side flat plate portion to be caulked and fixed, to the outer peripheral side flat plate portion is provided with identification means for identifying the at least two rotational position of the clamping member, the identification The means includes a first notch and a second notch, and the first notch The notch portion is formed of a single notch portion that is radially recessed in the outer peripheral end of the outer peripheral side flat plate portion, and the second notch portion is concave in the radial direction of the outer peripheral end of the outer peripheral side flat plate portion. The length of the orifice channel is set by press-fitting the clamping member into the cylindrical member with reference to the first notch or the second notch. It is .

なお、識別手段としては、例えば、挟持部材の外周端から半径方向へ凸設される凸設片、挟持部材の外周端を切り欠いた切り欠き部、挟持部材を板厚方向に凸設（凹設）した凸設部（凹設部）、挟持部材を板厚方向に穿設した穿設孔、或いは、挟持部材に刻設された刻印や塗布されたペイントなどとして構成されたものが例示される。 As the identification means, for example, a protruding piece protruding in the radial direction from the outer peripheral end of the holding member, a cutout portion formed by cutting out the outer peripheral end of the holding member, and the holding member protruding in the plate thickness direction (recessed) For example, a projecting portion (recessed portion) provided, a drilling hole in which a clamping member is drilled in the plate thickness direction, or a stamped or applied paint engraved on the clamping member is exemplified. The

請求項２記載の液封入式防振装置は、請求項１記載の液封入式防振装置において、前記筒部材は、その軸方向略中間部において半径方向へ張り出して形成されるオリフィス中間壁と、そのオリフィス中間壁の周方向一端部および他端部にそれぞれ連結される第１縦壁及び第２縦壁とを備えることにより、前記オリフィスの流路長さが前記筒部材の軸芯周りに略１周以上とされている。 The liquid-filled vibration isolator according to claim 2 is the liquid-filled vibration isolator according to claim 1 , wherein the cylindrical member is formed with an orifice intermediate wall formed to project radially in a substantially intermediate portion in the axial direction. The orifice intermediate wall has a first vertical wall and a second vertical wall connected to one end and the other end in the circumferential direction, respectively, so that the flow path length of the orifice is around the axis of the cylindrical member. It is approximately 1 round or more.

請求項１記載の液封入式防振装置によれば、挟持部材の圧入位置を変更することで、オリフィス出入口の回転方向位置を変更して、オリフィスの流路長さを調整することができる。よって、流路長さの異なる複数種類の液封入式防振装置を製造する場合でも、オリフィス手段（筒部材）および挟持部材を流用することができるので、その分、部品コストの低減を図ることができるという効果がある。 According to the liquid-filled vibration isolator according to the first aspect, by changing the press-fitting position of the holding member, the rotational direction position of the orifice inlet / outlet can be changed, and the flow path length of the orifice can be adjusted. Therefore, even when a plurality of types of liquid-filled vibration isolators with different flow path lengths are manufactured, the orifice means (cylinder member) and the holding member can be diverted, so that the part cost can be reduced accordingly. There is an effect that can be.

また、挟持部材の張出部には、その挟持部材の回転方向位置を識別するための識別手段が設けられている。よって、その識別手段を基準として圧入作業を行うことができるので、圧入位置精度の向上を図ることができると共に、作業ミスなどに起因する圧入位置不良の発生を抑制することができるという効果がある。更に、圧入作業後には、識別手段を利用して、圧入位置不良などの検査を効率的に行うことができるという効果がある。 The overhanging portion of the clamping member is provided with identification means for identifying the rotational direction position of the clamping member. Therefore, since the press-fitting work can be performed with reference to the identification means, it is possible to improve the press-fitting position accuracy and to suppress the occurrence of a press-fitting position defect due to a work mistake or the like. . Furthermore, after the press-fitting operation, there is an effect that an inspection such as a press-fitting position defect can be efficiently performed using the identification means.

更に、挟持部材の嵌合筒部を筒部材の内周に内嵌圧入する構成としたので、挟持部材と筒部材との位置ずれを防止することができるという効果がある。即ち、挟持部材の圧入位置を強固に維持することができるので、オリフィスの流路長さが増減することを防止して、液封入式防振装置の特性変化を確実に防止することができるという効果がある。 Furthermore, since the fitting cylinder portion of the clamping member is press-fitted into the inner periphery of the cylinder member, there is an effect that it is possible to prevent displacement between the clamping member and the cylinder member. That is, since the press-fitting position of the clamping member can be firmly maintained, the flow path length of the orifice can be prevented from increasing or decreasing, and the characteristic change of the liquid-filled vibration isolator can be surely prevented. effective.

また、挟持部材を筒部材（オリフィス手段）に圧入する構成とすれば、これら両部材を一体化することができるので、第２取り付け具内への装着作業などを容易として、液封入式防振部材の組み立てコストの低減を図ることができるという効果がある。
この識別手段は、挟持部材の外周端を切り欠いた切り欠き部として構成されているので、識別手段を形成するための形成コストを低減することができるという効果がある。即ち、挟持部材は、平板状の素材を所定の外形形状に打ち抜いて、その打ち抜いた素材にプレス成形を施して形成されるところ、識別手段を切り欠き部として構成すれば、平板状の素材を打ち抜く行程において、前記切り欠き部も同時に打ち抜いて形成することができるので、その分、識別手段を形成するに要するコストを低減することができる。
また、例えば、識別手段を挟持部材の外周端から半径方向へ凸設する凸設片として構成した場合には、挟持部材を第２取り付け具内へ挿入する際の作業性が凸設片によって阻害されたり、挿入後にはその凸設片の凸設分だけ挟持部材の位置が半径方向へ偏ったりする不具合があるところ、識別手段を切り欠き部として構成すれば、前記作業性が阻害されたり、挟持部材の位置が半径方向へ偏ったりする不具合を回避することができるという効果がある。
更に、切り欠き部としての識別手段は、挟持部材の２以上の回転方向位置を識別し得るように、挟持部材の外周端の少なくとも２カ所以上に設けられているので、流路長さの異なる複数種類の液封入防振装置を製造する場合でも、各切り欠き部（識別手段）を基準として圧入作業を行うことができるので、各圧入位置の精度の向上を図ることができるという効果がある。
また、この場合、各切り欠き部は、それぞれ異なる切り欠き形状とされているので、基準位置（切り欠き部）を誤認識するなどの作業ミスを低減することができ、その結果、かかる作業ミスに起因する圧入位置不良の発生を抑制することができると共に、圧入作業後には、各切り欠き部（識別手段）に基づいて、圧入位置不良などの検査を効率的に行うことができるという効果がある。 Further, if the sandwiching member is configured to be press-fitted into the cylindrical member (orifice means), these two members can be integrated, so that the mounting work in the second fixture can be facilitated, and the liquid-filled vibration proof There exists an effect that the assembly cost of a member can be aimed at.
Since the identification means is configured as a notched portion in which the outer peripheral end of the clamping member is notched, there is an effect that the formation cost for forming the identification means can be reduced. That is, the clamping member is formed by punching a flat plate material into a predetermined outer shape and press-molding the punched material. If the identification means is configured as a cutout portion, the flat plate material is formed. In the punching process, the notch can be formed by punching at the same time, so that the cost required for forming the identification means can be reduced accordingly.
In addition, for example, when the identification unit is configured as a protruding piece protruding in the radial direction from the outer peripheral end of the holding member, the workability when inserting the holding member into the second mounting tool is hindered by the protruding piece. Or after insertion, there is a problem that the position of the clamping member is biased in the radial direction by the protruding portion of the protruding piece, if the identification means is configured as a notch, the workability is hindered, There is an effect that it is possible to avoid a problem that the position of the clamping member is biased in the radial direction.
Furthermore, the identification means as the notches are provided at at least two locations on the outer peripheral end of the clamping member so that two or more rotational direction positions of the clamping member can be identified, so that the flow path lengths are different. Even when a plurality of types of liquid-filled vibration isolator are manufactured, the press-fitting operation can be performed with reference to each notch (identification means), so that the accuracy of each press-fitting position can be improved. .
Further, in this case, since each notch has a different notch shape, it is possible to reduce an operation error such as erroneous recognition of the reference position (notch), and as a result, such an operation error. It is possible to suppress the occurrence of a press-fit position defect due to the above-mentioned effect and to efficiently perform an inspection such as a press-fit position defect based on each notch (identification means) after the press-fitting operation. is there.

請求項２記載の液封入式防振装置によれば、請求項１記載の液封入式防振装置の奏する効果に加え、筒部材にオリフィス中間壁と第１縦壁及び第２縦壁とを設け、オリフィスの流路長さが筒部材の軸芯周りに１周以上となるように構成したので、かかる流路長さを長くすることができるという効果がある。しかも、挟持部材の張出部がオリフィス形成壁を兼用するように構成したので、従来の液封入式防振装置と比較して、オリフィスの流路断面積が減少することを回避でき、流路断面積を減少させることなく流路長さを長くすることができる。その結果、オリフィスの流体流動効果を確保して、十分な振動減衰機能を得ることができるという効果がある。 According to the hydraulic antivibration device according to claim 2, in addition to the effects of the hydraulic antivibration device according to claim 1 Symbol placement, an orifice intermediate wall and the first vertical wall and a second vertical wall in the tubular member And the flow path length of the orifice is configured to be one or more rounds around the axis of the cylindrical member, so that the flow path length can be increased. Moreover, since the overhanging portion of the clamping member is also used as the orifice forming wall, it is possible to avoid a decrease in the orifice cross-sectional area of the orifice as compared with the conventional liquid-filled vibration isolator. The channel length can be increased without reducing the cross-sectional area. As a result, the fluid flow effect of the orifice can be ensured and a sufficient vibration damping function can be obtained.

以下、本発明の好ましい実施例について、添付図面を参照して説明する。図１は、本発明の１実施例における液封入式防振装置１００の断面図である。 Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of a liquid filled type vibration damping device 100 according to an embodiment of the present invention.

この液封入式防振装置１００は、自動車のエンジンを支持固定しつつ、そのエンジン振動を車体フレームへ伝達させないようにするための防振装置であり、図１に示すように、エンジン側に取り付けられる第１取付け金具１と、エンジン下方の車体フレーム側に取付けられる筒状の第２取付け金具２と、これらを連結すると共にゴム状弾性体から構成される防振基体３とを主に備えている。 The liquid-filled vibration isolator 100 is a vibration isolator for supporting and fixing an automobile engine so that the engine vibration is not transmitted to the vehicle body frame, and is attached to the engine side as shown in FIG. The first mounting bracket 1 to be mounted, the cylindrical second mounting bracket 2 to be mounted on the side of the vehicle body frame below the engine, and the vibration-proof base 3 that connects these and is made of a rubber-like elastic body are mainly provided. Yes.

第１取付け金具１は、鉄鋼材料などから略平板状に形成され、図１に示すように、その略中央部には、取付けボルト４が上方へ向けて突設されている。また、取付けボルト４の側方には、後述するスタビライザー金具８を位置決めするための位置決めピン５が突設されている。 The first mounting bracket 1 is formed in a substantially flat plate shape from a steel material or the like. As shown in FIG. 1, a mounting bolt 4 protrudes upward at a substantially central portion. Further, a positioning pin 5 for positioning a stabilizer fitting 8 to be described later is projected from the side of the mounting bolt 4.

第２取付け金具２は、防振基体３が加硫成形される筒状金具６と、その筒状金具６の下方に取着される底金具７とを備えて構成されている。図１に示すように、筒状金具６は上広がりの開口を有する筒状に、底金具７はカップ状に、それぞれ鉄鋼材料などから形成されている。なお、底金具７の底部には、取付けボルト４が突設されると共に、位置決め凸部７ａが凸状にプレス成形されている。 The second mounting bracket 2 includes a cylindrical metal fitting 6 on which the vibration-proof base 3 is vulcanized and a bottom metal fitting 7 attached to the lower side of the cylindrical metal fitting 6. As shown in FIG. 1, the cylindrical metal fitting 6 is formed in a cylindrical shape having an opening extending upward, and the bottom metal fitting 7 is formed in a cup shape from a steel material or the like. A mounting bolt 4 projects from the bottom of the bottom fitting 7 and a positioning projection 7a is press-molded into a convex shape.

防振基体３は、図１に示すように、ゴム状弾性体から断面略円錐台形状に形成され、第１取付け金具１の下面側と筒状金具６の上端開口部との間に加硫接着されている。また、防振基体３の下端部には、筒状金具６の内周面を覆うゴム膜３ａが連なっており、このゴム膜３ａには、後述するオリフィス金具１６のオリフィス中間壁２２などが密着されている。 As shown in FIG. 1, the anti-vibration base 3 is formed from a rubber-like elastic body in a substantially truncated cone shape, and is vulcanized between the lower surface side of the first mounting bracket 1 and the upper end opening of the cylindrical fitting 6. It is glued. Further, a rubber film 3a covering the inner peripheral surface of the cylindrical metal fitting 6 is connected to the lower end portion of the vibration isolating base 3, and an orifice intermediate wall 22 of the orifice metal fitting 16 to be described later is in close contact with the rubber film 3a. Has been.

防振基体３の一端部（図１右側）には、図１に示すように、突出部３ｂが形成されており、この突出部３ｂがスタビライザー金具８に当接することで、大変位時のストッパ作用が得られるように構成されている。なお、この突出部３ｂには、その剛性強度を確保するべく、筒状金具６の一部が埋設されている。 As shown in FIG. 1, a protrusion 3 b is formed at one end (right side of FIG. 1) of the vibration-isolating base 3, and this protrusion 3 b abuts against the stabilizer fitting 8, thereby preventing a large displacement. It is comprised so that an effect | action may be acquired. In addition, in this protrusion part 3b, in order to ensure the rigidity intensity | strength, some cylindrical metal fittings 6 are embed | buried.

ダイヤフラム９は、ゴム状弾性体から部分球状を有するゴム膜状に形成さえるものであり、図１に示すように、第２取付け金具２（筒状金具６と底金具７との間）に取着されている。その結果、このダイヤフラム９の上面側と防振基体３の下面側との間には、液体封入室１１が形成されている。 The diaphragm 9 is formed in a rubber film shape having a partial spherical shape from a rubber-like elastic body, and is attached to the second mounting fitting 2 (between the tubular fitting 6 and the bottom fitting 7) as shown in FIG. It is worn. As a result, a liquid sealing chamber 11 is formed between the upper surface side of the diaphragm 9 and the lower surface side of the vibration isolation base 3.

この液体封入室１１には、エチレングリコールなどの不凍性の液体（図示せず）が封入される。図１に示すように、液体封入室１１は、後述する仕切り体１２によって、防振基体３側（図１上側）の主液室１１Ａと、ダイヤフラム９側（図１下側）の副液室１１Ｂとの２室に仕切られている。 The liquid enclosure 11 is filled with an antifreeze liquid (not shown) such as ethylene glycol. As shown in FIG. 1, the liquid sealing chamber 11 is divided into a main liquid chamber 11A on the vibration isolating base 3 side (upper side in FIG. 1) and a sub liquid chamber on the diaphragm 9 side (lower side in FIG. 1) by a partition body 12 described later. It is partitioned into two rooms with 11B.

なお、ダイヤフラム９は、上面視ドーナツ状の取付け板１０に加硫接着されており、図１に示すように、その取付け板１０が筒状金具６と底金具７との間でかしめ固定されることにより、第２取付け金具２に取着されている。 The diaphragm 9 is vulcanized and bonded to a donut-shaped mounting plate 10 as viewed from above, and the mounting plate 10 is caulked and fixed between the cylindrical metal fitting 6 and the bottom metal fitting 7 as shown in FIG. Thus, the second mounting bracket 2 is attached.

仕切り体１２は、図１に示すように、ゴム状弾性体から略円板状のゴム膜状に構成される弾性仕切り膜１５と、この弾性仕切り膜１５を収容して内周面側の格子状の壁部１６ａで受け止めるオリフィス金具１６と、このオリフィス金具１６の上側（図１上側）端部の開口部を覆う円板状の仕切板部材１７とを備えて構成されている。 As shown in FIG. 1, the partition 12 includes an elastic partition film 15 configured from a rubber-like elastic body into a substantially disc-like rubber film shape, and a lattice on the inner peripheral surface side that accommodates the elastic partition film 15. An orifice fitting 16 received by a wall-like wall portion 16a, and a disk-like partition plate member 17 covering the opening of the upper end (upper side in FIG. 1) of the orifice fitting 16 are configured.

なお、仕切板部材１７は、後述するように、格子状の壁部１７ａを備える。弾性仕切り膜１５は、仕切板部材１７の壁部１７ａとオリフィス金具１６の壁部１６ａとの対向面間に収容され、その変位が両側から規制されている。この変位規制により、大振幅入力時には、膜剛性を高めて、減衰特性の向上を図ることができる。 In addition, the partition plate member 17 is provided with the grid | lattice-like wall part 17a so that it may mention later. The elastic partition film 15 is accommodated between opposing surfaces of the wall portion 17a of the partition plate member 17 and the wall portion 16a of the orifice fitting 16, and the displacement thereof is restricted from both sides. By this displacement regulation, when a large amplitude is input, the film rigidity can be increased and the damping characteristic can be improved.

また、弾性仕切り膜１５は、壁部１６ａ，１７ａ等との間に若干の隙間を有した状態で収納されており、微振幅入力時には、その隙間を介して、液体封入室１１内の液体を主液室１１Ａから副液室１１Ｂ（又は、その逆）へリーク（漏出）させる。このリークにより、微振幅入力時の低動ばね化を図ることができる。 The elastic partition film 15 is housed in a state having a slight gap between the wall portions 16a, 17a and the like, and when the minute amplitude is input, the liquid in the liquid enclosure chamber 11 is passed through the gap. Leak (leak) from the main liquid chamber 11A to the sub liquid chamber 11B (or vice versa). Due to this leak, it is possible to reduce the dynamic spring when inputting a small amplitude.

オリフィス金具１６の外周面側には、第２取付け金具２（筒状金具６）の内周面を覆うゴム膜３ａとの間に、図１に示すように、オリフィス２５が形成されている。このオリフィス２５は、主液室１１Ａと副液室１１Ｂとを連通させるオリフィス流路である。 As shown in FIG. 1, an orifice 25 is formed on the outer peripheral surface side of the orifice metal fitting 16 between the rubber film 3 a covering the inner peripheral surface of the second mounting metal fitting 2 (tubular metal fitting 6). The orifice 25 is an orifice channel that communicates the main liquid chamber 11A and the sub liquid chamber 11B.

仕切り体１２は、図１に示すように、防振基体３に設けた仕切り体受け部３ｃと挟持部材１８とによって、第２取付け金具２の軸芯方向（図１上下方向）に挟持固定されている。挟持部材１８は、後述する第２筒部４４がオリフィス金具１６の下端側（図１下側）内周部に内嵌圧入され、また、その外周部側平板部４１が第２取付け金具２（筒状金具６と底金具７）にかしめ固定されている。 As shown in FIG. 1, the partition body 12 is clamped and fixed in the axial direction (vertical direction in FIG. 1) of the second mounting bracket 2 by the partition body receiving portion 3 c provided on the vibration isolation base 3 and the clamping member 18. ing. The clamping member 18 has a second cylindrical portion 44, which will be described later, fitted into the inner peripheral portion of the lower end side (lower side in FIG. 1) of the orifice fitting 16, and the outer peripheral side flat plate portion 41 is connected to the second mounting fitting 2 ( It is caulked and fixed to the cylindrical metal fitting 6 and the bottom metal fitting 7).

ここで、仕切り体受け部３ｃは、防振基体３の下面側の全周にわたる段部として形成され、図１に示すように、その段部で仕切り体１２の上端面を係止する。液封入式防振装置１００の組み立て状態においては、仕切り体受け部３ｃが圧縮変形されており、この仕切り体受け部３ｃの弾性復元力が仕切り体１２に保持力として作用している。これにより、仕切り体１２を強固かつ安定的に挟持固定することができる。 Here, the partition body receiving portion 3c is formed as a stepped portion over the entire circumference on the lower surface side of the vibration isolating base 3, and the upper end surface of the partitioning body 12 is locked at the stepped portion as shown in FIG. In the assembled state of the liquid filled type vibration isolator 100, the partition body receiving portion 3c is compressed and deformed, and the elastic restoring force of the partition body receiving portion 3c acts on the partition body 12 as a holding force. Thereby, the partition body 12 can be clamped and fixed firmly and stably.

なお、図１に示すように、挟持部材１８の第２筒部４４がオリフィス金具１６の下端側内周部に内嵌圧入されると共に、挟持部材１８の外周部側平板部４１が第２取付け金具２（筒状金具６と底金具７）にかしめ固定されているので、挟持部材１８及び仕切り体１２が強固に保持される。その結果、大振幅や高周波数の振幅が入力された場合などでも、各部材のびびりを抑制することができるので、各部材の位置ずれや共振などに起因する動特性への影響を回避することができる。 As shown in FIG. 1, the second cylindrical portion 44 of the clamping member 18 is press-fitted into the inner peripheral portion on the lower end side of the orifice fitting 16, and the outer peripheral side flat plate portion 41 of the clamping member 18 is second-attached. Since the metal fitting 2 (the cylindrical metal fitting 6 and the bottom metal fitting 7) is fixed by caulking, the holding member 18 and the partition 12 are firmly held. As a result, even when a large amplitude or high frequency amplitude is input, chattering of each member can be suppressed, thereby avoiding the influence on the dynamic characteristics due to positional deviation or resonance of each member. Can do.

次いで、図２及び図３を参照して、仕切り体１２を構成するオリフィス金具１６について説明する。図２（ａ）は、オリフィス金具１６の上面図であり、図２（ｂ）は、図２（ａ）のＩＩｂ−ＩＩｂ線におけるオリフィス金具１６の断面図である。また、図３は、オリフィス金具１６の側面図である。 Next, referring to FIG. 2 and FIG. 3, the orifice fitting 16 constituting the partition body 12 will be described. 2A is a top view of the orifice fitting 16, and FIG. 2B is a cross-sectional view of the orifice fitting 16 taken along line IIb-IIb in FIG. 2A. FIG. 3 is a side view of the orifice fitting 16.

オリフィス金具１６は、上述したように、図２及び図３に示すように、例えば、アルミニウムなどの金属材料から軸芯Ｏを有する略円筒状に形成されている。このオリフィス金具１６の軸方向上端（例えば、図３上側）には、図２及び図３に示すように、嵌合壁２１が径方向に張り出して形成されている。嵌合壁２１には、仕切板部材１７が外嵌圧入される（図１参照）。 As described above, the orifice fitting 16 is formed in a substantially cylindrical shape having the axis O from a metal material such as aluminum, for example, as shown in FIGS. As shown in FIGS. 2 and 3, a fitting wall 21 is formed on the upper end of the orifice fitting 16 in the axial direction (for example, on the upper side in FIG. 3) so as to project in the radial direction. The partition plate member 17 is press-fitted into the fitting wall 21 (see FIG. 1).

なお、嵌合壁２１の周方向の一部には、図２及び図３に示すように、切り欠き部２１ａが形成されており、この切り欠き部２１ａと後述する仕切板部材１７の開口部３２（図４参照）を介して、オリフィス２５（オリフィス流路Ｒ１）の一端が主液室１１Ａ（図１参照）に連通される。 2 and 3, a notch 21a is formed in a part of the fitting wall 21 in the circumferential direction. The notch 21a and an opening of a partition plate member 17 to be described later are formed. One end of the orifice 25 (orifice channel R1) is communicated with the main liquid chamber 11A (see FIG. 1) via 32 (see FIG. 4).

オリフィス金具１６の軸方向中間部には、図２及び図３に示すように、オリフィス中間壁２２が径方向に張り出して形成されている。このオリフィス中間壁２２に区画されることで、オリフィス２５には、上側略１周分のオリフィス流路Ｒ１と、下側略１周分のオリフィス流路Ｒ２とが形成されている。なお、オリフィス流路Ｒ２は、後述するように、そのオリフィス形成壁の一部が挟持部材１８（中間部側平板部４３）により形成される（図１参照）。 As shown in FIGS. 2 and 3, an orifice intermediate wall 22 is formed in the axially intermediate portion of the orifice fitting 16 so as to protrude in the radial direction. By being partitioned by the orifice intermediate wall 22, the orifice 25 is formed with an orifice channel R <b> 1 for approximately one upper circle and an orifice channel R <b> 2 for approximately one lower circle. As will be described later, the orifice flow path R2 is partly formed by the sandwiching member 18 (intermediate side flat plate portion 43) (see FIG. 1).

また、オリフィス中間壁２２は、図２及び図３に示すように、その周方向の一部が切り欠かれており、この切り欠き部の両端（即ち、オリフィス中間壁２２の周方向一端及び他端部）には、オリフィス金具１６の軸心Ｏ方向（例えば、図３上下方向）へ延びる第１及び第２縦壁２３ａ，２３ｂが連結されている。第１縦壁２３ａは、嵌合壁２１まで延びており、第２縦壁２３ｂは、オリフィス金具１６の下端部まで延びている。オリフィス２５には、これら第１及び第２縦壁２３ａ，２３ｂ間に、オリフィス流路Ｒ１，Ｒ２の進路変更部が形成されている（図９参照）。 Further, as shown in FIGS. 2 and 3, the orifice intermediate wall 22 is partially cut away in the circumferential direction, and both ends of the cutout portion (that is, one end in the circumferential direction of the orifice intermediate wall 22 and the other). 1st and 2nd vertical wall 23a, 23b extended in the axial center O direction (for example, FIG. 3 up-down direction) of the orifice metal fitting 16 is connected with the edge part. The first vertical wall 23 a extends to the fitting wall 21, and the second vertical wall 23 b extends to the lower end portion of the orifice fitting 16. In the orifice 25, a path changing portion for the orifice flow paths R1, R2 is formed between the first and second vertical walls 23a, 23b (see FIG. 9).

その結果、本実施例の液封入式防振装置１００によれば、オリフィス金具１６の外周側に、その軸心Ｏ周りに略１周以上の流路長さを有するオリフィス２５を形成することができる。また、後述するように、挟持部材１８の圧入位置を変更することで、オリフィス２５の流路長さを略１周弱から略２周弱の間の任意の長さ（本実施例では、略５／８周から略１３／８周の間）に設定することができる。 As a result, according to the liquid-filled vibration isolator 100 of the present embodiment, the orifice 25 having a flow path length of approximately one round or more around the axis O can be formed on the outer peripheral side of the orifice fitting 16. it can. Further, as will be described later, by changing the press-fitting position of the clamping member 18, the flow path length of the orifice 25 is set to an arbitrary length between approximately less than 1 turn and approximately less than 2 turns (in this embodiment, approximately (Between 5/8 laps and approximately 13/8 laps).

また、後述するように、挟持部材１８の中間部側平板部４３がオリフィス形成壁を兼用するように構成したので（図１参照）、液封入式防振装置１００の全高が同じであれば、従来の液封入式防振装置と比較して、オリフィス２５の流路断面積が減少することを回避でき、流路断面積を減少させることなく流路長さを長くすることができる。その結果、オリフィス２５の流体流動効果を確保して、十分な振動減衰機能を得ることができる。 Further, as will be described later, since the intermediate side flat plate portion 43 of the sandwiching member 18 is configured to also serve as an orifice forming wall (see FIG. 1), if the total height of the liquid filled type vibration damping device 100 is the same, Compared with the conventional liquid-filled vibration isolator, it is possible to avoid a decrease in the flow path cross-sectional area of the orifice 25 and to increase the flow path length without reducing the flow path cross-sectional area. As a result, the fluid flow effect of the orifice 25 can be secured and a sufficient vibration damping function can be obtained.

オリフィス金具１６の内周側には、図２に示すように、壁部１６ａが形成され、その壁部１６ａには、複数の開口部（中心側の格子孔２４ａと、壁部１６ａの周方向に２列に並ぶ格子孔２４ｂ，２４ｃ）が板厚方向に穿設されている。これにより、壁部１６ａは、略格子状に形成されている。 As shown in FIG. 2, a wall portion 16a is formed on the inner peripheral side of the orifice fitting 16, and a plurality of openings (center side lattice holes 24a and the circumferential direction of the wall portion 16a are formed in the wall portion 16a. Lattice holes 24b, 24c) arranged in two rows are formed in the thickness direction. Thereby, the wall part 16a is formed in the substantially grid | lattice form.

なお、本実施例では、図２に示すように、格子孔２４ａの形状は、オリフィス金具１６の軸心Ｏに同心の略円状に、格子孔２４ｂ，２４ｃの形状は、周方向に沿う環状の孔を放射状に分断した形状に、それぞれ形成されている。 In this embodiment, as shown in FIG. 2, the shape of the lattice holes 24a is substantially circular concentric with the axis O of the orifice fitting 16, and the shapes of the lattice holes 24b and 24c are annular along the circumferential direction. Each of the holes is formed in a shape that is radially divided.

また、４個の格子孔２４ｂ及び８個の格子孔２４ｃは、それぞれ周方向へ略等間隔（略９０度および略４５度ごと）に配設され、内側の列の格子孔２４ｂは、外側の列の４５度ごとの格子孔２４ｃと周方向における位置が一致するように配設されている。 Further, the four lattice holes 24b and the eight lattice holes 24c are arranged at substantially equal intervals (approximately every 90 degrees and approximately 45 degrees) in the circumferential direction, respectively, and the lattice holes 24b in the inner row are arranged on the outer side. The lattice holes 24c of every 45 degrees are arranged so that the positions in the circumferential direction coincide with each other.

次いで、図４を参照して、仕切り体１２を構成する仕切板部材１７について説明する。図４（ａ）は仕切板部材１７の上面図であり、図４（ｂ）は、図４（ａ）のＩＶｂ−ＩＶｂ線における仕切板部材１７の断面図である。 Next, the partition plate member 17 constituting the partition body 12 will be described with reference to FIG. 4A is a top view of the partition plate member 17, and FIG. 4B is a cross-sectional view of the partition plate member 17 taken along line IVb-IVb in FIG. 4A.

仕切板部材１７は、図４に示すように、鉄鋼材料などから軸心Ｐを有する略円板状に形成されている。仕切板部材１７の内周側には、複数の開口部（中心側の格子孔３４ａと、周方向に２列に並ぶ格子孔３４ｂ，３４ｃ）が板厚方向に穿設されており、これにより、略格子状の壁部１７ａが形成されている。 As shown in FIG. 4, the partition plate member 17 is formed in a substantially disc shape having an axis P from a steel material or the like. On the inner peripheral side of the partition plate member 17, a plurality of openings (center side lattice holes 34 a and lattice holes 34 b and 34 c arranged in two rows in the circumferential direction) are formed in the plate thickness direction. A substantially lattice-like wall portion 17a is formed.

なお、これら壁部１７ａ及び格子孔３４ａ〜３４ｃは、上述したオリフィス金具１６の壁部１６ａ及び格子孔２４ａ〜２４ｃと同一のパターン（位置、大きさ、範囲など）で構成されるものであるので、その説明は省略する。 The wall portion 17a and the lattice holes 34a to 34c are configured in the same pattern (position, size, range, etc.) as the wall portion 16a and the lattice holes 24a to 24c of the orifice fitting 16 described above. The description is omitted.

仕切板部材１７の外周部には、図４に示すように、外嵌筒部３１が立設されている。仕切板部材１７は、この外嵌筒部３１を上述したオリフィス金具１６の嵌合壁２１に外嵌することで、オリフィス金具１６に組み付けられる（図１参照）。 As shown in FIG. 4, an outer fitting cylindrical portion 31 is erected on the outer peripheral portion of the partition plate member 17. The partition plate member 17 is assembled to the orifice fitting 16 by fitting the outer fitting cylindrical portion 31 to the fitting wall 21 of the orifice fitting 16 described above (see FIG. 1).

仕切板部材１７の壁部１７ａであって、格子孔３４ｃの外側には、図４に示すように、開口部３２が板厚方向に穿設されている。この開口部３２は、上述したように、オリフィス金具１６の切り欠き部２１ａ（図２及び図３参照）を介して、オリフィス２５（オリフィス流路Ｒ１）と主液室１１Ａとを連通させる開口である。 As shown in FIG. 4, an opening 32 is formed in the wall thickness direction of the partition plate member 17 on the outer side of the lattice hole 34c. As described above, the opening 32 is an opening through which the orifice 25 (orifice channel R1) and the main liquid chamber 11A communicate with each other via the notch 21a of the orifice fitting 16 (see FIGS. 2 and 3). is there.

開口部３２は、図４（ａ）に示すように、周方向に沿って湾曲した略楕円状に形成されている。開口部３２は、その周方向長さがオリフィス金具１６の切り欠き部２１ａよりも長くなるように設定されている（図７参照）。よって、仕切板部材１７をオリフィス金具１６に組み付ける場合には、その組み付け位置が周方向へ多少ずれても、オリフィス２５の流路断面積が減少することを防止することができる。 As shown in FIG. 4A, the opening 32 is formed in a substantially elliptical shape curved along the circumferential direction. The opening 32 is set so that its circumferential length is longer than the notch 21a of the orifice fitting 16 (see FIG. 7). Therefore, when the partition plate member 17 is assembled to the orifice fitting 16, it is possible to prevent the flow path cross-sectional area of the orifice 25 from being reduced even if the assembly position is slightly shifted in the circumferential direction.

次いで、図５を参照して、仕切り体１２を構成する弾性仕切り膜１５について説明する。図５（ａ）は、弾性仕切り膜１５の上面図であり、図５（ｂ）は、図５（ａ）のＶｂ−Ｖｂ線における弾性仕切膜１５の断面図である。なお、図５（ａ）では、図面を簡素化して、理解を容易とするために、リブ群（環状および放射状リブ１５ａ，１５ｂ）が一点鎖線を用いて図示されている。 Next, the elastic partition film 15 constituting the partition body 12 will be described with reference to FIG. 5A is a top view of the elastic partition film 15, and FIG. 5B is a cross-sectional view of the elastic partition film 15 taken along the line Vb-Vb in FIG. 5A. In FIG. 5 (a), the rib group (annular and radial ribs 15a and 15b) is illustrated using a chain line in order to simplify the drawing and facilitate understanding.

弾性仕切り膜１５は、上述したように、仕切り体１２内（オリフィス金具１６の壁部１６ａと仕切板部材１７の壁部１７ａとの対向面間）に収容され、主及び副液室１１Ａ，１１Ｂ間の液圧差を緩和する作用を奏するものであり、ゴム状弾性体から略円板状に構成されている。この弾性仕切り膜１５の上下両面には、図５に示すように、リブ群が突設されている。なお、上面側のリブ群のパターンは、下面側のリブ群のパターンと同一に形成されている。 As described above, the elastic partition membrane 15 is accommodated in the partition body 12 (between the opposing surfaces of the wall portion 16a of the orifice fitting 16 and the wall portion 17a of the partition plate member 17), and the main and sub liquid chambers 11A and 11B. It is effective to relieve the hydraulic pressure difference between the two, and is formed in a substantially disk shape from a rubber-like elastic body. As shown in FIG. 5, rib groups protrude from the upper and lower surfaces of the elastic partition film 15. The pattern of the rib group on the upper surface side is the same as the pattern of the rib group on the lower surface side.

リブ群は、図５に示すように、環状の突条として構成される環状リブ１５ａと、放射状の突条として構成される放射状リブ１５ｂとを備えている。環状リブ１５ａは、仕切り体１２の組み立て状態において、その頂部が壁部１６ａ，１７ａから離れて位置するように高さ寸法が設定されている。一方、放射状リブ１５ｂは、仕切り体１２の組み立て状態において、その頂部が壁部１６ａ，１７ａに当接するように高さ寸法が設定され、かつ、環状リブ１５ａよりも小幅のリブ幅に設定されている。 As shown in FIG. 5, the rib group includes an annular rib 15 a configured as an annular protrusion, and a radial rib 15 b configured as a radial protrusion. The annular rib 15a is set to have a height dimension such that the top of the annular rib 15a is located away from the walls 16a and 17a in the assembled state of the partition body 12. On the other hand, the height of the radial rib 15b is set so that the top of the radial rib 15b abuts against the walls 16a and 17a in the assembled state of the partition body 12, and the rib width is set to be smaller than the annular rib 15a. Yes.

これにより、大振幅入力時には、放射状リブ１５ｂが抵抗となって、環状リブ１５ａの頂部を壁部１６ａ，１７ａに緩やかに衝突させることができるので、大振幅入力時の異音の発生を低減することができる。また、放射状リブ１５ａのリブ幅を小幅にして剛性を弱くしてあるから、弾性仕切り膜１５が往復動しにくくなるのを回避して、微振幅入力時の動ばね定数の増大を抑制することができる。 Thereby, when the large amplitude is input, the radial rib 15b becomes a resistance, and the top portion of the annular rib 15a can be caused to gently collide with the wall portions 16a and 17a, thereby reducing the generation of abnormal noise when the large amplitude is input. be able to. Further, since the rib width of the radial rib 15a is reduced to make the rigidity weak, it is possible to prevent the elastic partition film 15 from reciprocating and to suppress an increase in the dynamic spring constant at the time of inputting a small amplitude. Can do.

次いで、図６を参照して、挟持部材１８について説明する。図６（ａ）は、挟持部材１８の上面図であり、図６（ｂ）は、図６（ａ）のＶＩｂ−ＶＩｂ線における挟持部材１８の断面図である。 Next, the clamping member 18 will be described with reference to FIG. 6A is a top view of the clamping member 18, and FIG. 6B is a cross-sectional view of the clamping member 18 taken along the line VIb-VIb in FIG. 6A.

挟持部材１８は、防振基体３との間で仕切り体１２を挟持して保持するための部材であり（図１参照）、図６に示すように、鉄鋼材料などから軸心Ｑを有する略円板状に形成されている。 The sandwiching member 18 is a member for sandwiching and holding the partition 12 with the vibration isolating base 3 (see FIG. 1). As shown in FIG. 6, the sandwiching member 18 has an axis Q from a steel material or the like. It is formed in a disk shape.

この挟持部材１８は、図６に示すように、外周部側平板部４１と、ゴム膜３ａの下端部に密着してシールする第１筒部４２と、オリフィス金具１６の下端部に押圧作用する中間部側平板部４３と、オリフィス金具１６の下端側の内周部に内嵌される第２筒部４４とを備えて構成されている。また、挟持部材１８の中心部には、ダイヤフラム９との干渉を回避するための開口部が形成されている。 As shown in FIG. 6, the clamping member 18 presses the outer peripheral side flat plate portion 41, the first cylindrical portion 42 that is in close contact with the lower end portion of the rubber film 3 a, and the lower end portion of the orifice fitting 16. The intermediate portion side flat plate portion 43 and a second cylindrical portion 44 fitted into the inner peripheral portion on the lower end side of the orifice fitting 16 are provided. In addition, an opening for avoiding interference with the diaphragm 9 is formed at the center of the clamping member 18.

外周部側平板部には、図６に示すように、第１及び第２切り欠き部４５ａ，４５ｂが形成されている。第１及び第２切り欠き部４５ａ，４５ｂは、挟持部材１８の回転方向位置を識別するための識別手段であり、外周部側平板部４１の外周端をそれぞれ異なる切り欠き形状で切り欠いた切り欠き部として構成されている。 As shown in FIG. 6, first and second cutout portions 45 a and 45 b are formed in the outer peripheral side flat plate portion. The first and second cutout portions 45a and 45b are identification means for identifying the rotational direction position of the clamping member 18, and are cut by cutting the outer peripheral end of the outer peripheral portion side flat plate portion 41 into different cutout shapes. It is configured as a notch.

具体的には、第１及び第２切り欠き部４５ａ，４５ｂは、図６（ａ）に示すように、それぞれ外周部側平板部４１の外周端を半径方向に凹欠した形状であり、第１切り欠き部４５ａが一つの凹欠部から構成されるのに対し、第２切り欠き部４５ｂは、２つの凹欠部から構成されている。本実施例では、一方の切り欠き部４５ａ，４５ｂが他方の切り欠き部４５ｂ，４５ａから外周部側平板部４１の円弧に沿って略１７０°離間する箇所に配置されている。 Specifically, as shown in FIG. 6A, the first and second cutout portions 45a and 45b each have a shape in which the outer peripheral end of the outer peripheral portion side flat plate portion 41 is recessed in the radial direction. The 1 notch part 45a is comprised from one recessed part, whereas the 2nd notch part 45b is comprised from two recessed parts. In the present embodiment, one of the cutout portions 45a and 45b is disposed at a location spaced approximately 170 ° from the other cutout portion 45b and 45a along the arc of the outer peripheral side flat plate portion 41.

このように、第１及び第２切り欠き部４５ａ，４５ｂは、挟持部材１８（外周部側平板部４１）の外周端を切り欠いた切り欠き部として構成されているので、その形成コストを低減することができる。 Thus, since the 1st and 2nd notch parts 45a and 45b are comprised as a notch part which notched the outer peripheral end of the clamping member 18 (outer peripheral part side flat plate part 41), the formation cost is reduced. can do.

即ち、挟持部材１８は、平板状の素材を所定の外形形状に打ち抜いて、その打ち抜いた素材にプレス成形を施して形成されるところ、第１及び第２切り欠き部４５ａ，４５ｂを切り欠き部として構成したので、平板状の素材を打ち抜く行程において、第１及び第２切り欠き部４５ａ，４５ｂも同時に打ち抜いて形成することができる。その結果、第１及び第２切り欠き部４５ａ，４５ｂを形成するために別工程を不要として、その分、成形コストを低減することができる。 That is, the clamping member 18 is formed by punching a flat plate material into a predetermined outer shape and press-molding the punched material, thereby forming the first and second cutout portions 45a and 45b as cutout portions. Therefore, the first and second cutout portions 45a and 45b can be formed by punching at the same time in the process of punching a flat material. As a result, a separate process is not required to form the first and second cutout portions 45a and 45b, and the molding cost can be reduced accordingly.

ここで、例えば、識別手段を外周部側平板部４１の外周端から半径方向へ凸設する凸設片として構成した場合には、挟持部材１８を第２取り付け金具２（筒状金具６）内へ挿入する際に、突設片が筒状金具６の下端（図１下方端）に干渉して、挿入作業性が阻害されたり、挿入後にはその凸設片の凸設分だけ挟持部材１８が半径方向へ偏ったりする不具合があるところ（図１参照）、識別手段を切り欠き部（第１及び第２切り欠き部４５ａ，４５ｂ）として構成すれば、前記作業性が阻害されたり、挟持部材１８の位置が半径方向へ偏ったりする不具合を回避することができる。 Here, for example, when the identification means is configured as a protruding piece protruding in the radial direction from the outer peripheral end of the outer peripheral side flat plate portion 41, the clamping member 18 is placed in the second mounting bracket 2 (tubular bracket 6). When inserting, the projecting piece interferes with the lower end (lower end in FIG. 1) of the cylindrical metal fitting 6 and the insertion workability is hindered. If the discriminating means is configured as notches (first and second notches 45a and 45b), the workability is hindered or pinched. The problem that the position of the member 18 is biased in the radial direction can be avoided.

中間部側平板部４３は、オリフィス形成壁を兼用するように構成されている。即ち、上述したオリフィス金具１６は、その下端部の外径寸法が中間部側平板部４３の外径寸法よりも小径とされており（図１参照）、その結果、中間部平板部４３は、オリフィス金具１６の下端部から半径方向へ張り出す張出部として、オリフィス２５（オリフィス流路Ｒ２）のオリフィス形成壁を兼用する。 The intermediate portion side flat plate portion 43 is configured to also serve as an orifice forming wall. That is, the orifice fitting 16 described above has an outer diameter dimension at its lower end portion smaller than an outer diameter dimension of the intermediate portion side flat plate portion 43 (see FIG. 1). As an overhanging portion that protrudes in the radial direction from the lower end portion of the orifice fitting 16, the orifice forming wall of the orifice 25 (orifice channel R2) is also used.

中間部側平板部４３、即ち、オリフィス形成壁には、図６（ａ）に示すように、周方向に沿って延びる略楕円状の開口部４６が板厚方向（図６（ａ）紙面垂直方向）に穿設されている。オリフィス２５（オリフィス流路Ｒ２）は、この開口部４６を介して、副液室１１Ｂに連通される（図１参照）。 As shown in FIG. 6 (a), a substantially elliptical opening 46 extending along the circumferential direction is formed in the intermediate portion side flat plate portion 43, that is, the orifice forming wall, in the plate thickness direction (FIG. 6 (a) perpendicular to the paper surface). Direction). The orifice 25 (orifice channel R2) is communicated with the sub liquid chamber 11B through the opening 46 (see FIG. 1).

なお、第２筒部４４の外周部は、軸芯Ｑに垂直な断面形が略円状に形成され、上述したオリフィス金具１６（図２（ｂ）参照）の下端側内周部も、軸芯Ｏに垂直な断面形が略円状に形成されている。よって、挟持部材１８は、その第２筒部４４を、オリフィス金具１６の下端側内周部に、任意の圧入位置（回転方向位置）で内嵌圧入することができる。 Note that the outer peripheral portion of the second cylindrical portion 44 is formed in a substantially circular cross section perpendicular to the axis Q, and the lower end side inner peripheral portion of the orifice fitting 16 (see FIG. 2B) is also a shaft. A cross-sectional shape perpendicular to the core O is formed in a substantially circular shape. Therefore, the clamping member 18 can press-fit the second cylindrical portion 44 into the inner peripheral portion on the lower end side of the orifice fitting 16 at an arbitrary press-fitting position (rotational direction position).

また、このように、挟持部材１８の第２筒部４４をオリフィス金具１６の下端側内周部に内嵌圧入する構成とすることで、挟持部材１８とオリフィス金具１６との位置ずれを防止することができる。即ち、内嵌圧入部の弾性復元力や摩擦力などの保持力により、挟持部材１８の圧入位置を強固に維持することができる。その結果、オリフィス２５の流路長さが増減することを防止して、液封入式防振装置１００の特性変化を確実に防止することができる。 Further, as described above, the second cylinder portion 44 of the clamping member 18 is configured to be press-fitted into the inner peripheral portion on the lower end side of the orifice fitting 16, thereby preventing the positional deviation between the clamping member 18 and the orifice fitting 16. be able to. That is, the press-fitting position of the clamping member 18 can be firmly maintained by the holding force such as the elastic restoring force and frictional force of the internal fitting press-fitting portion. As a result, the flow path length of the orifice 25 can be prevented from increasing or decreasing, and the characteristic change of the liquid-filled vibration isolator 100 can be reliably prevented.

更に、挟持部材１８の第２筒部４４をオリフィス金具１６の下端側内周部に圧入する構成とすることで、これら両部材１６，１８を一体化することができる（図７又は図８参照）。よって、これら両部材１２，１８の搬送や第２取り付け金具２（筒状金具６）内への装着作業などを一度に行うことができるので、それら各作業を効率化して、その分、液封入式防振部材１００の組み立てコストの低減を図ることができる。 Furthermore, by adopting a configuration in which the second cylindrical portion 44 of the clamping member 18 is press-fitted into the inner peripheral portion on the lower end side of the orifice fitting 16, both the members 16 and 18 can be integrated (see FIG. 7 or FIG. 8). ). Therefore, since it is possible to carry out the transportation of these members 12 and 18 and the mounting work in the second mounting bracket 2 (cylindrical bracket 6) at a time, each of these operations is made more efficient, and the liquid is filled accordingly. The assembly cost of the vibration isolating member 100 can be reduced.

次いで、図７から図９を参照して、オリフィス２５の流路長さについて説明する。 Next, the flow path length of the orifice 25 will be described with reference to FIGS.

図７は、オリフィス２５の流路長さがオリフィス金具１６の周りに略１周とされた状態を示す図であり、図７（ａ）は、仕切り体１２及び挟持部材１８の上面図であり、図７（ｂ）は、図７（ａ）のＶＩＩｂ−ＶＩＩｂ線における仕切り体１２及び挟持部材１８の断面図である。 FIG. 7 is a view showing a state in which the flow path length of the orifice 25 is substantially one round around the orifice fitting 16, and FIG. 7A is a top view of the partition body 12 and the holding member 18. FIG. 7B is a cross-sectional view of the partition body 12 and the clamping member 18 taken along the line VIIb-VIIb of FIG.

一方、図８は、オリフィス２５の流路長さが最長（略１３／８周）に設定された状態を示す図であり、図８（ａ）は、仕切り体１２及び挟持部材１８の上面図であり、図８（ｂ）は、図８（ａ）のＶＩＩＩｂ−ＶＩＩＩｂ線における仕切り体１２及び挟持部材１８の断面図である。 On the other hand, FIG. 8 is a view showing a state where the flow path length of the orifice 25 is set to the longest (approximately 13/8 round), and FIG. 8A is a top view of the partition body 12 and the sandwiching member 18. FIG. 8B is a cross-sectional view of the partition 12 and the clamping member 18 taken along the line VIIIb-VIIIb of FIG.

また、図９は、仕切り体１２（オリフィス金具１６）の外周面を平面に展開して示した展開模式図であり、図９（ａ）は、図７に示す状態（略一周の流路長さ）に対応し、図９（ｂ）は、図８に示す状態（最長の流路長さ）に対応する。なお、図９では、仕切板部材１７及び挟持部材１８の開口部３２，４６位置が２点鎖線を用いて仮想的に図示されている。 FIG. 9 is a developed schematic view showing the outer peripheral surface of the partition body 12 (orifice fitting 16) developed on a plane, and FIG. 9A shows the state shown in FIG. 9 (b) corresponds to the state shown in FIG. 8 (longest flow path length). In FIG. 9, the positions of the openings 32 and 46 of the partition plate member 17 and the holding member 18 are virtually illustrated using a two-dot chain line.

なお、図７及び図８に図示した矢印Ｘは、仕切り体１２（オリフィス金具１６）に対する挟持部材１８の圧入基準位置Ｘを意味する。挟持部材１８は、その外周側が保持具（図示せず）によって保持されてオリフィス金具１６に圧入されるが、この保持具の保持面には、第１又は第２位置決め部材４５ａ，４５ｂに係合して、挟持部材１８の圧入位置（回転方向位置）を位置決めする位置決め突部が突設されている。この位置決め突部の周方向位置が圧入基準位置Ｘに対応する。 7 and 8 indicates the press-fitting reference position X of the clamping member 18 with respect to the partition 12 (orifice fitting 16). The holding member 18 is held by a holder (not shown) on the outer peripheral side thereof and is press-fitted into the orifice fitting 16. The holding surface of this holder is engaged with the first or second positioning member 45 a or 45 b. And the positioning protrusion which positions the press-fit position (rotation direction position) of the clamping member 18 is protrudingly provided. The circumferential position of the positioning protrusion corresponds to the press-fit reference position X.

本発明の液封入式防振装置１００によれば、上述したように、仕切り体１２（オリフィス金具１６）に対する挟持部材１８の圧入位置を変更することで、オリフィス２５の流路長さを略５／８周から略１３／８周の間で任意に設定することができる。なお、仕切り体１２は、図７又は図８に示すように、仕切板部材１７の開口部３２がオリフィス金具１６の切り欠き部２１ａと一致するように組み立てられている。 According to the liquid filled type vibration damping device 100 of the present invention, as described above, the flow path length of the orifice 25 is set to about 5 by changing the press-fitting position of the clamping member 18 with respect to the partition 12 (orifice fitting 16). / 8 laps to approximately 13/8 laps can be arbitrarily set. As shown in FIG. 7 or FIG. 8, the partition 12 is assembled so that the opening 32 of the partition plate member 17 coincides with the notch 21 a of the orifice fitting 16.

例えば、第１切り欠き部４５ａを基準として（即ち、第１切り欠き部４５ａを圧入基準位置Ｘに合わせた状態で）、挟持部材１８を仕切り体１２（オリフィス金具１６）に圧入した場合には、図７（ａ）に示すように、挟持部材１８の開口部４６が仕切板部材１７の開口部３２位置に一致されるので、オリフィス２５の流路長さは、オリフィス金具１６の軸芯周りに略１周の長さに設定される。 For example, when the clamping member 18 is press-fitted into the partition body 12 (orifice fitting 16) with the first notch 45a as a reference (that is, with the first notch 45a set to the press-fitting reference position X). As shown in FIG. 7A, since the opening 46 of the clamping member 18 coincides with the position of the opening 32 of the partition plate member 17, the flow path length of the orifice 25 is around the axis of the orifice fitting 16. Is set to a length of approximately one round.

より詳細には、第１切り欠き部４５ａを基準として圧入した場合、図９（ａ）に示すように、挟持部材１８の開口部４６が仕切板部材１７の開口部３２の下方（図９（ａ）下方）に位置するので、オリフィス２５は、主液室１１Ａから、開口部３２（切り欠き部２１ａ）を介して、上側のオリフィス流路Ｒ１に流入し、そのオリフィス流路Ｒ１を始端から終端まで通過すると共に、第１及び第２縦壁２３ａ，２３ｂ間で下側のオリフィス流路Ｒ２へ進路変更し、そのオリフィス流路Ｒ２を所定距離だけ通過した後、開口部４６を介して、副液室１１Ｂへ流出するという経路で構成される。その結果、オリフィス２５の流路長さは、オリフィス金具１６の軸芯周りに略１周の長さに設定される。 More specifically, when press-fitting with the first notch 45a as a reference, as shown in FIG. 9A, the opening 46 of the clamping member 18 is located below the opening 32 of the partition plate member 17 (FIG. 9 ( a) Since the orifice 25 is located on the lower side), the orifice 25 flows from the main liquid chamber 11A through the opening 32 ( notch portion 21a) into the upper orifice flow path R1, and passes through the orifice flow path R1 from the start end. While passing to the end, the course is changed to the lower orifice flow path R2 between the first and second vertical walls 23a, 23b, and after passing through the orifice flow path R2 by a predetermined distance, through the opening 46, It is configured by a path that flows out to the sub liquid chamber 11B. As a result, the flow path length of the orifice 25 is set to a length of about one round around the axis of the orifice fitting 16.

一方、図７（ｂ）に示すように、第２切り欠き部４５ｂを基準として（即ち、第２切り欠き部４５ｂを圧入基準位置Ｘに合わせた状態で）、挟持部材１８をオリフィス金具１６に圧入した場合には、挟持部材１８の開口部４６が仕切板部材１７の開口部３２から周方向に離間した位置に配置され、オリフィス２５の流路長さは、最長（略１３／８周）に設定される。 On the other hand, as shown in FIG. 7B, the clamping member 18 is attached to the orifice fitting 16 with the second notch 45b as a reference (that is, with the second notch 45b aligned with the press-fitting reference position X). When press-fitted, the opening 46 of the clamping member 18 is arranged at a position spaced in the circumferential direction from the opening 32 of the partition plate member 17, and the flow path length of the orifice 25 is the longest (approximately 13/8 round). Set to

より詳細には、第２切り欠き部４５ａを基準として圧入した場合、挟持部材１８の開口部４６は、図９（ｂ）に示すように、第２縦壁２３ｂの側方（図９（ｂ）左側、即ち、オリフィス流路Ｒ２の終端）に位置する。 More specifically, when press-fitting with the second notch 45a as a reference, the opening 46 of the clamping member 18 is formed on the side of the second vertical wall 23b (see FIG. 9B), as shown in FIG. ) Located on the left side, that is, the end of the orifice channel R2.

この場合のオリフィス２５は、図９（ｂ）に示すように、主液室１１Ａから、開口部３２（切り欠き部２１ａ）を介して、上側のオリフィス流路Ｒ１に流入し、そのオリフィス流路Ｒ１を始端から終端まで通過すると共に、第１及び第２縦壁２３ａ，２３ｂ間で下側のオリフィス流路Ｒ２へ進路変更し、そのオリフィス流路Ｒ２を始端から終端（第２縦壁２３ｂ）まで通過した後、開口部４６を介して、副液室１１Ｂへ流出するという経路で構成される。その結果、オリフィス２５の流路長さは、最長の長さ、即ち、オリフィス金具１６の軸芯周りに略１３／８周の長さに設定される。 As shown in FIG. 9B, the orifice 25 in this case flows into the upper orifice channel R1 from the main liquid chamber 11A via the opening 32 ( notch portion 21a), and the orifice channel While passing through R1 from the start end to the end, the path is changed to the lower orifice flow path R2 between the first and second vertical walls 23a, 23b, and the orifice flow path R2 is changed from the start end to the end (second vertical wall 23b). And then flows out to the auxiliary liquid chamber 11B through the opening 46. As a result, the flow path length of the orifice 25 is set to the longest length, that is, approximately 13/8 round around the axis of the orifice fitting 16.

ここで、第１及び第２切り欠き部４５ａ，４５ｂは、図７又は図８に示すように、それぞれ異なる切り欠き形状で構成されている。よって、挟持部材１８を保持する上述した保持具の位置決め突部の形状も同様に異なる形状とすることで、圧入基準位置（各切り欠き部４５ａ，４５ｂの位置）を誤認識するなどの作業ミスを防止して、かかる作業ミスに起因する圧入位置不良の発生を回避することができる。また、圧入作業後には、各切り欠き部４５ａ，４５ｂの形状に基づいて、圧入位置不良などの検査を効率的に行うことができる。 Here, as shown in FIG. 7 or FIG. 8, the first and second cutout portions 45a and 45b are formed in different cutout shapes. Accordingly, by making the positioning protrusions of the above-mentioned holders for holding the holding member 18 different in shape as well, an operation error such as erroneously recognizing the press-fitting reference position (the positions of the notches 45a and 45b). Therefore, it is possible to avoid the occurrence of a press-fit position defect due to such a work mistake. Further, after the press-fitting work, it is possible to efficiently inspect the press-fitting position defect and the like based on the shapes of the cutout portions 45a and 45b.

以上説明したように、本実施例の液封入式防振装置１００によれば、挟持部材１８の圧入位置を変更することで、その開口部４６の回転方向位置を変更して、オリフィス２５の流路長さを調整することができる。よって、流路長さの異なる複数種類の液封入式防振装置１００（いわゆる特性違い品）を製造する場合でも、仕切り手段１２（オリフィス金具１６、仕切板部材１７等）及び挟持部材１８を流用することができるので、その分、部品コストの低減を図ることができる。 As described above, according to the liquid-filled vibration isolator 100 of the present embodiment, the rotational position of the opening 46 is changed by changing the press-fitting position of the clamping member 18, and the flow of the orifice 25 is changed. The road length can be adjusted. Therefore, even when a plurality of types of liquid-filled vibration isolator 100 having different flow path lengths (so-called products with different characteristics) are manufactured, the partition means 12 (orifice fitting 16, partition plate member 17, etc.) and the clamping member 18 are diverted. Therefore, the part cost can be reduced accordingly.

更に、この場合、本実施例の液封入式防振装置１００によれば、挟持部材１８には、その回転方向位置を識別するための識別手段（第１及び第２切り欠き部４５ａ，４５ｂ）が設けられている。よって、その識別手段を基準として挟持部材１８の圧入作業を行うことができるので、圧入位置精度の向上を図ることができると共に、作業ミスなどに起因する圧入位置不良の発生を抑制することができる。また、圧入作業後には、識別手段を利用して、圧入位置不良などの検査を効率的に行うことができる。 Further, in this case, according to the liquid-filled vibration isolator 100 of the present embodiment, the clamping member 18 has identification means (first and second cutout portions 45a and 45b) for identifying the rotational direction position. Is provided. Therefore, the pressing member 18 can be press-fitted on the basis of the identification means, so that the press-fitting position accuracy can be improved and the occurrence of a press-fitting position defect due to a work mistake or the like can be suppressed. . In addition, after the press-fitting work, it is possible to efficiently inspect the press-fitting position and the like using the identification means.

以上、実施例に基づき本発明を説明したが、本発明は上記実施例に何ら限定される物ではなく、本発明の趣旨を逸脱しない範囲内で種々の改良変形が可能であることは容易に推察できるものである。 The present invention has been described above based on the embodiments. However, the present invention is not limited to the above embodiments, and various modifications can be easily made without departing from the spirit of the present invention. It can be guessed.

例えば、上記実施例では、第１切り欠き部４５ａを一つの凹欠部から構成する一方、第２切り欠き部４５ｂを２つの凹欠部から構成することで、両切り欠き部４５ａ，４５ｂを互いに異なる切り欠き形状としたが、必ずしもこれに限られるものではなく、他の手法により異なる切り欠き形状とすることは当然可能である。例えば、凹欠部の凹欠深さや凹欠幅をそれぞれ変更することで、両切り欠き部４５ａ，４５ｂが互いに異なる切り欠き形状となるように構成しても良い。 For example, in the above-described embodiment, the first cutout 45a is composed of one concave cutout, while the second cutout 45b is formed of two concave cutouts so that both cutouts 45a and 45b are mutually connected. Although different notch shapes are used, the present invention is not necessarily limited to this, and naturally different notch shapes can be obtained by other methods. For example, you may comprise so that both the notch parts 45a and 45b may become a notch shape mutually different by changing the notch depth and the notch width of a notch part, respectively.

但し、両切り欠き部４５ａ，４５ｂを同一の切り欠き形状で構成することも当然可能である。 However, it is naturally possible to form both the cutout portions 45a and 45b with the same cutout shape.

また、上記実施例では、識別手段を切り欠き部としての第１及び第２切り欠き部４５ａ，４５ｂで構成する場合を説明したが、必ずしもこれに限られるわけではなく、識別手段を他の手段で構成することは当然可能である。他の手段としては、例えば、外周部側平板部４１の外周端から半径方向へ凸設される凸設片、外周部側平板部４１を板厚方向に凸設（凹設）した凸設部（凹設部）、外周部側平板部４１を板厚方向に穿設した穿設孔、或いは、外周部側平板部４１に刻設された刻印や塗布されたペイントなどが例示される。 In the above-described embodiment, the case where the identification means is configured by the first and second cutout portions 45a and 45b as the cutout portions has been described. However, the present invention is not necessarily limited to this, and the identification means is not limited to other means. Of course, it is possible to configure with. As other means, for example, a protruding piece protruding in the radial direction from the outer peripheral end of the outer peripheral side flat plate portion 41, or a protruding portion where the outer peripheral side flat plate portion 41 is protruded (recessed) in the plate thickness direction. (Recessed portion), a perforation hole in which the outer peripheral side flat plate portion 41 is formed in the thickness direction, or an inscription engraved in the outer peripheral side flat plate portion 41, applied paint, and the like.

また、上記実施例では、オリフィス金具１６に仕切板部材１７を外嵌圧入した後、挟持部材１８を内嵌圧入する場合を説明したが、必ずしもこれに限られるわけではなく、その圧入順序を逆とすることは当然可能である。 In the above embodiment, the case where the partition plate member 17 is externally press-fitted into the orifice fitting 16 and then the clamping member 18 is press-fitted is described. However, the present invention is not necessarily limited to this, and the press-fitting order is reversed. Of course, it is possible.

また、上記実施例では、挟持部材１８の圧入位置を変更することで、オリフィス２５の流路長さが略１周または略１３／８周に設定される場合を説明したが、必ずしもこれに限られるわけではなく、他の流路長さに設定することは当然可能である。例えば、図１０に示すように、挟持部材１８の圧入位置を変更して、開口部４６を第１及び第２縦壁２３ａ，２３ｂ間に配置した場合には、オリフィス２５の流路長さを最短（略５／８周）に設定することができる。 Further, in the above-described embodiment, the case where the flow path length of the orifice 25 is set to approximately 1 or approximately 13/8 by changing the press-fitting position of the clamping member 18 has been described. Of course, other channel lengths can be set. For example, as shown in FIG. 10, when the press-fitting position of the clamping member 18 is changed and the opening 46 is disposed between the first and second vertical walls 23a and 23b, the flow path length of the orifice 25 is increased. The shortest (approximately 5/8 round) can be set.

本発明の１実施例における液封入式防振装置の断面図である。1 is a cross-sectional view of a liquid-filled vibration isolator in one embodiment of the present invention. （ａ）は、オリフィス金具の上面図であり、（ｂ）は、図２（ａ）のＩＩｂ−ＩＩｂ線におけるオリフィス金具の断面図である。(A) is a top view of an orifice metal fitting, (b) is sectional drawing of the orifice metal fitting in the IIb-IIb line | wire of Fig.2 (a). オリフィス金具の側面図である。It is a side view of an orifice metal fitting. （ａ）は仕切板部材の上面図であり、（ｂ）は、図４（ａ）のＩＶｂ−ＩＶｂ線における仕切板部材の断面図である。(A) is a top view of a partition plate member, (b) is sectional drawing of the partition plate member in the IVb-IVb line | wire of Fig.4 (a). （ａ）は、弾性仕切り膜の上面図であり、（ｂ）は、図５（ａ）のＶｂ−Ｖｂ線における弾性仕切膜の断面図である。(A) is a top view of an elastic partition membrane, (b) is a cross-sectional view of the elastic partition membrane along the line Vb-Vb in FIG. 5 (a). （ａ）は、挟持部材の上面図であり、（ｂ）は、図６（ａ）のＶＩｂ−ＶＩｂ線における挟持部材の断面図である。(A) is a top view of a clamping member, (b) is sectional drawing of the clamping member in the VIb-VIb line | wire of Fig.6 (a). （ａ）は、仕切り体及び挟持部材の上面図であり、（ｂ）は、図７（ａ）のＶＩＩｂ−ＶＩＩｂ線における仕切り体及び挟持部材の断面図である。(A) is a top view of a partition body and a clamping member, (b) is sectional drawing of the partition body and clamping member in the VIIb-VIIb line | wire of Fig.7 (a). （ａ）は、仕切り体及び挟持部材の上面図であり、（ｂ）は、図８（ａ）のＶＩＩＩｂ−ＶＩＩＩｂ線における仕切り体及び挟持部材の断面図である。(A) is a top view of a partition body and a clamping member, (b) is sectional drawing of the partition body and clamping member in the VIIIb-VIIIb line | wire of Fig.8 (a). 仕切り体（オリフィス金具）の外周面を平面に展開して示した展開模式図であり、（ａ）は、図７に示す状態に対応し、（ｂ）は、図８に示す状態に対応する。It is the expansion | deployment schematic diagram which expanded and showed the outer peripheral surface of the partition body (orifice metal fitting) in the plane, (a) respond | corresponds to the state shown in FIG. 7, (b) respond | corresponds to the state shown in FIG. . 仕切り体（オリフィス金具）の外周面を平面に展開して示した展開模式図であり、変形例を示している。It is the expansion | deployment schematic diagram which expanded and showed the outer peripheral surface of the partition body (orifice metal fitting) in the plane, and has shown the modification.

Explanation of symbols

１００液封入式防振装置
１第１取付け金具（第１取付け具）
２第２取付け金具（第２取付け具）
３防振基体
３ｃ仕切り体受け部（仕切り手段受け部）
９ダイヤフラム
１１液体封入室
１１Ａ主液室
１１Ｂ副液室
１２仕切り体（仕切り手段）
１５弾性仕切り膜
１６オリフィス金具（筒部材）
１６ａ壁部
１７仕切板部材（仕切り膜変位規制部材）
１７ａ壁部
１８挟持部材
２２オリフィス中間壁
２３ａ第１縦壁
２３ｂ第２縦壁
４３中間部側平板部（張出部）
４４第２筒部（嵌合筒部）
４５ａ第１切り欠き部（識別手段の一部、切り欠き部）
４５ｂ第２切り欠き部（識別手段の一部、切り欠き部）
４６開口部（オリフィス出入口）
２５オリフィス
Ｒ１，Ｒ２オリフィス流路 100 Liquid-sealed vibration isolator 1 First mounting bracket (first mounting bracket)
2 Second mounting bracket (second mounting bracket)
3 Anti-vibration base 3c Partition receiving part (partition means receiving part)
9 Diaphragm 11 Liquid enclosure chamber 11A Main liquid chamber 11B Sub liquid chamber 12 Partition body (partition means)
15 Elastic partition membrane 16 Orifice fitting (tubular member)
16a Wall part 17 Partition plate member (partition membrane displacement regulating member)
17a Wall 18 Holding member 22 Orifice intermediate wall 23a First vertical wall 23b Second vertical wall 43 Intermediate side flat plate portion (overhang portion)
44 Second cylinder part (fitting cylinder part)
45a First cutout part (part of identification means, cutout part)
45b Second notch (part of identification means, notch)
46 opening (orifice entrance / exit)
25 Orifice R1, R2 Orifice flow path

Claims

A first mounting tool, a cylindrical second mounting tool, the second mounting tool and the first mounting tool connected to each other, and a vibration isolating base made of a rubber-like elastic material; and the second mounting tool. A diaphragm which is attached and forms a liquid sealing chamber between the vibration isolating substrate, partition means for partitioning the liquid sealing chamber into a main liquid chamber on the vibration isolating substrate side and a sub liquid chamber on the diaphragm side; An orifice formed between an outer peripheral surface of the partitioning means and an inner peripheral surface of the second fixture, and a partition provided with the partitioning means provided on the vibration-proof base; the orifice communicating the main liquid chamber and the sub liquid chamber; A clamping member that clamps and fixes between the means receiving portion,
The partition means includes an elastic partition film made of a rubber-like elastic material, a cylindrical member that accommodates the elastic partition film and is received by a lattice-like wall on the inner peripheral surface side, and one end side of the cylindrical member. A lattice-shaped partition membrane displacement regulating member covering the opening,
By setting the outer diameter of the other end portion of the cylindrical member to be smaller than the outer diameter of the clamping member, a protruding portion that protrudes from the other end portion of the cylindrical member is formed on the peripheral edge portion of the clamping member. A liquid-filled vibration isolator configured so that the overhanging portion also serves as an orifice forming wall,
The clamping member is inserted into an orifice inlet / outlet opened in the overhanging portion, a fitting cylinder portion fitted into the inner periphery on the other end side of the cylinder member, and the second fixture. An outer peripheral side flat plate portion fixed by caulking ,
The outer peripheral side flat plate part is provided with identification means for identifying at least two rotational direction positions of the clamping member, and the identification means is composed of a first notch part and a second notch part. The first cutout portion is formed of a single notch portion that radially cuts the outer peripheral end of the outer peripheral portion side flat plate portion, and the second cutout portion is an outer peripheral end of the outer peripheral portion side flat plate portion. It is composed of two recessed parts that are recessed in the radial direction ,
The liquid-filled vibration isolating apparatus is characterized in that a flow path length of the orifice is set by press-fitting the clamping member into the cylindrical member with reference to the first notch or the second notch. apparatus.

The cylindrical member has an orifice intermediate wall formed in a substantially intermediate portion in the axial direction so as to project radially, and a first vertical wall and a second wall respectively connected to one end portion and the other end portion in the circumferential direction of the orifice intermediate wall. by providing a vertical wall, according to claim 1 Symbol placement of hydraulic antivibration device is characterized in that there is a substantially one round or more around the axis of the flow path length is the cylindrical member of the orifice.