JP2002206591A - Liquid sealing type vibration control device - Google Patents
Liquid sealing type vibration control deviceInfo
- Publication number
- JP2002206591A JP2002206591A JP2001004778A JP2001004778A JP2002206591A JP 2002206591 A JP2002206591 A JP 2002206591A JP 2001004778 A JP2001004778 A JP 2001004778A JP 2001004778 A JP2001004778 A JP 2001004778A JP 2002206591 A JP2002206591 A JP 2002206591A
- Authority
- JP
- Japan
- Prior art keywords
- partition wall
- liquid
- vibration
- electromagnet
- main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Combined Devices Of Dampers And Springs (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、主として自動車用
エンジンを車体フレームに弾性支持させて振動を吸収し
減衰するエンジンマウント等に用いられる液体封入式防
振装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid-filled type vibration damping device mainly used for an engine mount for absorbing and attenuating vibration by elastically supporting an automobile engine on a vehicle body frame.
【０００２】[0002]
【従来の技術】この種の液体封入式防振装置は、振動発
生部及び振動受部にそれぞれ連結される取付部材とこれ
ら両取付部材間に介在された弾性体により形成される中
空空間内に仕切り壁を設けて主，副二つの液室が区画形
成され、振動付加時の弾性体の変形に伴って圧縮される
主液室内の封入液体の一部を両液室間に亘って形成され
ている制限通路を通して副液室側に流動することによっ
て、主液室内の液圧変動を吸収させて防振機能を発揮す
るように構成されているのが一般的である。2. Description of the Related Art A liquid-filled type vibration damping device of this type is provided in a hollow space formed by a mounting member connected to a vibration generating portion and a vibration receiving portion and an elastic body interposed between the mounting members. A partition wall is provided to define two main and sub liquid chambers, and a part of the sealed liquid in the main liquid chamber which is compressed as the elastic body is deformed when vibration is applied is formed between the two liquid chambers. In general, it is configured such that a fluid pressure fluctuation in the main liquid chamber is absorbed by flowing to the sub liquid chamber side through the restricted passage, thereby exhibiting an anti-vibration function.
【０００３】しかし、上記のごとき制限通路のみを有
し、仕切り壁が固定されてなる液体封入式防振装置で
は、振動が低周波数領域の場合は封入液体が制限通路を
通過して副液室側に流動するので、主液室内の液圧変動
を吸収して振動を減衰することが可能であるものの、振
動が高周波数領域の場合は制限通路が閉ざされたと同様
な状態となるために、主液室内の液圧変動を吸収するこ
とができず、高周波振動に対して所定の防振性能を確保
することができない。However, in the liquid filled type vibration damping device having only the restricted passage as described above and the partition wall being fixed, when the vibration is in a low frequency region, the sealed liquid passes through the restricted passage and passes through the auxiliary liquid chamber. Since it flows to the side, it is possible to absorb the fluctuation of the liquid pressure in the main liquid chamber and attenuate the vibration, but if the vibration is in the high frequency range, it will be in the same state as the restricted passage is closed, Fluctuations in the liquid pressure in the main liquid chamber cannot be absorbed, and a predetermined vibration-proof performance cannot be ensured against high-frequency vibration.
【０００４】そこで、従来、二つの液室を区画する仕切
り壁をゴムエマトラマーなどを用いた弾性膜から構成
し、高周波数領域の振動が作用したとき、弾性膜からな
る仕切り壁を弾性変位させることで主液室の液圧変動を
吸収し防振させるように構成したものが提案されてい
た。Therefore, conventionally, a partition wall that partitions the two liquid chambers is formed of an elastic film using a rubber emma trama, and when a vibration in a high frequency region acts, the partition wall made of the elastic film is elastically displaced. There has been proposed one configured to absorb the fluctuation of the liquid pressure in the main liquid chamber and to dampen the vibration.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記の
ような従来の液体封入式防振装置の場合は、仕切り壁が
弾性膜であっても、１つの部材である限りその剛性は一
定で、振動周波数に応じて剛性を変化させることができ
ないために、特定（一つまたは非常に狭い範囲）の周波
数領域の振動に対してのみ防振効果が発揮されるだけ
で、それ以外の周波数領域の振動に対しては十分な防振
効果を発揮させることができないという問題があった。However, in the case of the conventional liquid-filled type vibration damping device as described above, even if the partition wall is an elastic film, its rigidity is constant as long as it is a single member, and the vibration is reduced. Since the stiffness cannot be changed according to the frequency, only the anti-vibration effect is exerted for vibration in a specific (one or very narrow range) frequency region, and vibration in other frequency regions However, there is a problem that a sufficient anti-vibration effect cannot be exhibited.
【０００６】本発明は上記のような実情に鑑みてなされ
たもので、仕切り壁自体の動ばね定数を可変にして広い
高周波数領域の振動に対しても所定の防振効果を発揮さ
せることができ、しかも、全体をコンパクトに構成する
ことができる液体封入式防振装置を提供することを目的
としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is possible to make the dynamic spring constant of the partition wall itself variable so as to exhibit a predetermined vibration-proof effect against vibration in a wide high-frequency region. It is an object of the present invention to provide a liquid-filled type vibration damping device that can be made compact in size.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するため
に、本発明に係る液体封入式防振装置は、振動発生部及
び振動受部のいずれか一方に連結される取付部材と他方
に連結される取付部材並びに両取付部材間に設けられた
弾性体により形成される中空閉空間内に、該空間内部を
主，副二つの液室に仕切る仕切り壁が両液室の体積を相
対的に可変する方向に変位可能に設けられているととも
に、この仕切り壁を上記の液室体積可変方向に変位駆動
させる手段として、磁界強さの大きさによって粘度が変
化するＭＲ流体及びこのＭＲ流体の粘度を変化させるた
めの磁界強さを制御可能な電磁石が備えられており、か
つ、両液室を互いに連通させて振動発生時の主液室内の
液圧変動を吸収する制限通路が設けられてなる液体封入
式防振装置であって、上記電磁石を仕切り壁に一体に組
付けていることを特徴とするものである。To achieve the above object, a liquid filled type vibration damping device according to the present invention comprises a mounting member connected to one of a vibration generating portion and a vibration receiving portion and a connecting member connected to the other. In the hollow closed space formed by the mounting member and the elastic body provided between the mounting members, a partition wall that partitions the inside of the space into two main and sub-liquid chambers relatively reduces the volume of both the liquid chambers. The means for displacing the partition wall in the variable direction and the means for driving the partition wall in the liquid chamber volume variable direction include an MR fluid whose viscosity changes according to the magnitude of the magnetic field strength and a viscosity of the MR fluid. An electromagnet capable of controlling the magnetic field strength for changing the pressure is provided, and a restriction passage is provided for connecting the two liquid chambers to each other and absorbing a fluctuation in the liquid pressure in the main liquid chamber when vibration occurs. It is a liquid filled type vibration damping device , And it is characterized in that it integrally assembled to the electromagnet in the partition wall.
【０００８】上記のような特徴構成を有する本発明によ
れば、電磁石への通電をオン・オフあるいは通電（印
加）電流をコントロールして磁界強さの大きさを調整す
ることにより、ＭＲ流体の粘度を増減変化させて仕切り
壁を定位置に固定したり、主，副二つの液室の体積が相
対的に可変される方向に変位させて仕切り壁の動ばね定
数を小さくしたりすることが可能であり、低周波数領域
の振動が作用する条件下では主液室内の封入液体を副液
室側に制限流動させるといった液封式防振装置が本来有
する振動吸収機能によって防振性能を確保することがで
き、また、高周波数領域の振動が作用する条件下では仕
切り壁の動ばね定数を調整して主，副両液室の体積弾性
率を任意にかつ応答性よく変更可能とすることによっ
て、広い高周波数領域の振動に対しても十分な防振効果
を発揮させることができる。According to the present invention having the above-mentioned characteristic configuration, the magnitude of the magnetic field strength is adjusted by turning on / off the energization of the electromagnet or controlling the energization (applied) current to thereby reduce the MR fluid. The partition wall can be fixed at a fixed position by increasing or decreasing the viscosity, or the dynamic spring constant of the partition wall can be reduced by displacing the main and sub chambers in a direction in which the volumes of the two chambers are relatively variable. Under the conditions where vibration in the low-frequency region acts, the vibration-proof performance inherent in the liquid-ring type vibration-proof device inherently limited to the enclosed liquid in the main liquid chamber to the sub-liquid chamber side is ensured. In addition, under conditions where vibrations in the high-frequency region act, by adjusting the dynamic spring constant of the partition wall, it is possible to arbitrarily and responsively change the bulk modulus of both the main and sub liquid chambers. Wide, high frequency range It is possible to exhibit a sufficient vibration damping effect against vibration.
【０００９】その上、上記ＭＲ流体の粘度を変化させる
ための磁界強さを制御する電磁石を仕切り壁に一体に組
付けることによって、電磁石を仕切り壁の外周部に配設
する場合に比べて、装置全体をコンパクトに構成するこ
とが可能である。In addition, the electromagnet for controlling the magnetic field strength for changing the viscosity of the MR fluid is integrally mounted on the partition wall, so that the electromagnet is disposed on the outer peripheral portion of the partition wall. It is possible to make the whole apparatus compact.
【００１０】特に、上記のごとき液体封入式防振装置に
おいて、請求項２に記載のように、上記主液室側に気体
の封入された空気室を対向状態に形成するためのダイヤ
フラムの中央部を仕切り壁に一体に結合し、それらの一
体結合部分を通して仕切り壁に一体に組み付けられた電
磁石用の制御線を外部に引き出す構成を採用することに
よって、制御線を液室内の封入液体と接触させることな
く外部に引き出すことが可能となり、その結果、制御線
に対する特別なシール構造も不要となり、装置全体のコ
ンパクト化とともに構造の簡素化、低コスト化を図るこ
とができ、また、ダイヤフラムと仕切り壁との一体結合
により高周波数領域の振動作用時における仕切り壁の動
ばね定数をより小さくして高周波領域の防振効果を一層
高めることができる。In particular, in the liquid filled type vibration damping device as described above, a central portion of a diaphragm for forming an air chamber filled with gas on the side of the main liquid chamber so as to face the main liquid chamber. Is integrally connected to the partition wall, and the control line for the electromagnet integrally mounted on the partition wall is drawn out to the outside through the integrated connection portion, thereby bringing the control line into contact with the sealed liquid in the liquid chamber. As a result, a special sealing structure for the control lines is not required, which makes it possible to reduce the size of the entire device, simplify the structure, and reduce the cost. The dynamic spring constant of the partition wall during the vibration action in the high frequency range can be further reduced by the integral connection with the .
【００１１】なお、仕切り壁が円形であり、その外周部
に配置されるＭＲ流体が円環状形であることが最も好ま
しいが、仕切り壁が楕円形や矩形であり、ＭＲ流体がそ
れに対応して楕円環状形や矩形環状形であってもよい。It is most preferable that the partition wall is circular and that the MR fluid disposed on the outer peripheral portion is of an annular shape. However, the partition wall is elliptical or rectangular, and the MR fluid has a corresponding shape. An elliptical ring shape or a rectangular ring shape may be used.
【００１２】[0012]
【発明の実施の形態】以下、本発明の実施の形態を図面
にもとづいて説明する。図１は本発明に係る液体封入式
防振装置の縦断面構造を示し、この液体封入式防振装置
は、自動車用エンジン等の振動発生源側に連結して取付
けられる取付部材１と自動車用フレーム等の振動受部側
に連結して取付けられる鉄やコバルト、ニッケル等の強
磁性材質製の有底筒状取付部材２並びに両取付部材１，
２間に介設される略環状円錐形状の弾性ゴム（弾性体）
３により形成される中空閉空間内に仕切り壁４を設置す
ることにより、該仕切り壁４の両側に主，副二つの液室
５，６が区画形成されている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a longitudinal section structure of a liquid-filled vibration damping device according to the present invention. The liquid-filled vibration damping device has a mounting member 1 connected to a vibration generating source side such as an engine for a vehicle and a mounting member 1 for a vehicle. A bottomed cylindrical mounting member 2 made of a ferromagnetic material such as iron, cobalt, or nickel, and both mounting members 1, which are connected and mounted on a vibration receiving portion side of a frame or the like.
A substantially circular conical elastic rubber (elastic body) interposed between the two
By disposing the partition wall 4 in the hollow closed space formed by 3, two main and sub liquid chambers 5 and 6 are formed on both sides of the partition wall 4.
【００１３】上記仕切り壁４は、主，副二つの液室５，
６に臨むように互いに平行に対向配置された強磁性材質
製の二枚の円盤状板部４Ａ，４Ｂとこれら円盤状板部４
Ａ，４Ｂをその中心部で一体に連結するボス部４Ｃとか
らなり、上記有底筒状取付部材２をシリンダとして主，
副二つの液室５，６の体積を相対的に可変するａ−ｂ方
向に変位可能に構成されている。The partition wall 4 has two main and sub liquid chambers 5,
6, two disc-shaped plate portions 4A and 4B made of a ferromagnetic material and arranged in parallel and opposed to each other so as to face 6;
A and a boss portion 4C that integrally connects the 4B at the center thereof, and the bottomed cylindrical mounting member 2 is mainly used as a cylinder.
The sub two liquid chambers 5 and 6 are configured so as to be displaceable in the a-b direction that relatively changes the volume.
【００１４】上記主液室５の底部側には、ダイヤフラム
７を介して気体（空気）の封入された空気室８が対向状
態に形成されている。また、上記有底筒状の取付部材２
には、両液室５，６を相互に連通させて振動発生時の弾
性ゴム３の弾性変形に伴い圧縮される主液室５内の封入
液体の一部を副液室６側に流動させて主液室５内の液圧
変動をダイヤフラム８の変形と相俟って吸収する緩衝用
制限通路９が形成されている。On the bottom side of the main liquid chamber 5, an air chamber 8 in which gas (air) is sealed via a diaphragm 7 is formed so as to face each other. Further, the bottomed cylindrical mounting member 2
The two liquid chambers 5 and 6 are communicated with each other, and a part of the sealed liquid in the main liquid chamber 5 which is compressed due to the elastic deformation of the elastic rubber 3 at the time of vibration is caused to flow to the sub liquid chamber 6 side. In addition, a buffering restriction passage 9 is formed to absorb the fluctuation of the liquid pressure in the main liquid chamber 5 in conjunction with the deformation of the diaphragm 8.
【００１５】上記仕切り壁４には、電磁石１０が二枚の
円盤状板部４Ａ，４Ｂ間に挟持される状態で一体に組付
けられている。この電磁石１０を含む仕切り壁４の外周
面と上記有底筒状取付部材２の内周面との間で仕切り壁
４の変位方向の両端部がそれぞれ円環状弾性ゴム１１，
１１によりシールされた円環状隙間内には、磁界強さの
大きさによって粘度が変化するＭＲ流体１２が密封状態
に介在されており、電磁石１０への通電・通電停止及び
通電電流の制御に伴い円盤状板部４Ｂ→ＭＲ流体１２→
取付部材２→円盤状板部４Ａ→電磁石１０で形成される
磁路に流れる磁界強さの大きさを調整してＭＲ流体１２
の粘度を変化させることにより、仕切り壁４を位置固定
並びに上記したａ−ｂ方向に変位駆動可能に構成してい
る。An electromagnet 10 is integrally attached to the partition wall 4 while being sandwiched between the two disk-shaped plate portions 4A and 4B. Between the outer peripheral surface of the partition wall 4 including the electromagnet 10 and the inner peripheral surface of the bottomed tubular mounting member 2, both ends in the displacement direction of the partition wall 4 are annular elastic rubbers 11, respectively.
An MR fluid 12 whose viscosity varies according to the magnitude of the magnetic field strength is interposed in a sealed state in the annular gap sealed by 11, and energization / deactivation of the electromagnet 10 and control of the energization current are carried out. Disc-shaped plate 4B → MR fluid 12 →
Attachment member 2 → Disc-shaped plate 4A → Adjust the magnitude of the magnetic field flowing through the magnetic path formed by electromagnet 10 to adjust the MR fluid 12
By changing the viscosity of the partition wall 4, the partition wall 4 can be fixed in position and can be driven to be displaced in the above-described a-b directions.
【００１６】そして、上記ダイヤフラム７の中央部には
孔７ａが形成されているとともに、この孔７ａの周縁部
が仕切り壁４中心部のボス部４Ｃに一体に結合され、そ
の一体結合部分及び空気室８を通して上記電磁石１０用
の制御線１３が外部に引き出されている。A hole 7a is formed in the center of the diaphragm 7, and the peripheral edge of the hole 7a is integrally connected to a boss 4C at the center of the partition wall 4, and the integrally connected portion and the air A control line 13 for the electromagnet 10 is drawn through the chamber 8 to the outside.
【００１７】なお、上記ＭＲ流体体１２は、高濃度の懸
濁液中に１〜１０μｍ程度の粒子径をもつ強磁性金属微
粒子を分散させてなるビンガム流体で、−４０〜１５０
℃の作動温度域を有し磁界強さの大きさによって粘度が
変化するものであり、磁気粘性流体あるいは磁気流動学
的流体と呼ばれている。The MR fluid 12 is a Bingham fluid in which fine ferromagnetic metal particles having a particle diameter of about 1 to 10 μm are dispersed in a high-concentration suspension.
It has an operating temperature range of ° C., and its viscosity changes depending on the magnitude of the magnetic field strength, and is called a magnetorheological fluid or a magnetorheological fluid.
【００１８】上記構成の液体封入式防振装置において、
低周波数領域の振動が作用する条件下では、電磁石スイ
ッチ（図示省略）をＯＮにして電磁石１０へ一定の印加
電流を通電させ磁路に形成される磁界強さを大きくする
ことによって、ＭＲ流体１２の粘度が増大して仕切り壁
４の動ばね定数が大きくなり、仕切り壁４は位置固定さ
れることになる。この状態では、振動付加による弾性ゴ
ム３の変形に伴って圧縮される主液室５内の封入液体が
制限通路９を経て副液室６側に制限流動して主液室５内
の液圧変動が吸収されることになり、これによって、低
周波数領域の振動を減衰し所定の防振性能を確保するこ
とができる。In the liquid filled type vibration damping device having the above structure,
Under the condition where the vibration in the low frequency region acts, the electromagnetic fluid switch (not shown) is turned on to apply a constant applied current to the electromagnet 10 to increase the magnetic field strength formed in the magnetic path, thereby increasing the MR fluid 12. And the dynamic spring constant of the partition wall 4 increases, and the partition wall 4 is fixed in position. In this state, the sealed liquid in the main liquid chamber 5 that is compressed due to the deformation of the elastic rubber 3 due to the vibration is restricted to the sub liquid chamber 6 via the restriction passage 9 and the hydraulic pressure in the main liquid chamber 5 is reduced. The fluctuations are absorbed, whereby the vibration in the low frequency region is attenuated, and the predetermined vibration isolation performance can be secured.
【００１９】一方、高周波数領域の振動が作用する条件
下では、電磁石スイッチをＯＦＦにして電磁石１１への
通電を停止する、あるいは、通電電流を増減制御して磁
界強さの大きさを調整することにより、ＭＲ流体１２の
粘度が減少方向に変化されて仕切り壁４の動ばね定数が
通電時よりも小さくなる。これによって、振動周波数に
応じて主，副両液室５，６の体積弾性率が応答性よく変
更されることになるため、広い高周波数領域の振動に対
して十分大きな防振効果を発揮させることができる。On the other hand, under the condition that the vibration in the high frequency region acts, the electromagnet switch is turned off to stop the energization to the electromagnet 11, or the magnitude of the magnetic field strength is adjusted by increasing or decreasing the energizing current. As a result, the viscosity of the MR fluid 12 is changed in the decreasing direction, and the dynamic spring constant of the partition wall 4 becomes smaller than when the power is supplied. As a result, the bulk modulus of the main and sub liquid chambers 5 and 6 is changed with good responsiveness in accordance with the vibration frequency, so that a sufficiently large vibration damping effect is exerted against vibration in a wide high frequency range. be able to.
【００２０】ここで特に、ＭＲ流体１２の粘度を増減変
化させるための磁界強さを制御する電磁石１０を仕切り
壁４自体に一体に組付けることによって、この電磁石１
０を例えば取付部材２に固定するなど仕切り壁４の外周
部に配設する場合に比べて、装置全体をコンパクトに構
成することが可能である。また、仕切り壁４に一体に組
付けた電磁石１０用の制御線１３を外部に引き出すにあ
たって、主液室５側に空気室８を対向状態に形成するた
めのダイヤフラム７の中央部分と仕切り壁４との一体結
合部分を通して外部に引き出すことによって、制御線１
３を液室５内の封入液体と接触させることなく外部に引
き出すことが可能となり、その結果、制御線１３に対す
る特別なシール構造も不要となり、装置全体のコンパク
ト化とともに構造の簡素化、低コスト化を図ることがで
きる。また、ダイヤフラム７と仕切り壁４とを一体結合
することにより仕切り壁４の動ばね定数をより小さくし
て高周波領域の振動減衰効果を一層高めることができ
る。Here, in particular, by assembling the electromagnet 10 for controlling the magnetic field strength for increasing and decreasing the viscosity of the MR fluid 12 integrally with the partition wall 4 itself, this electromagnet 1
The entire apparatus can be made more compact as compared to the case where the O is fixed to the outer peripheral portion of the partition wall 4 by, for example, fixing to the mounting member 2. Further, when the control line 13 for the electromagnet 10 integrally attached to the partition wall 4 is drawn out, the central portion of the diaphragm 7 and the partition wall 4 for forming the air chamber 8 on the main liquid chamber 5 side in an opposed state. Control line 1 by pulling it out through an integral connection with the
3 can be drawn out to the outside without making contact with the sealed liquid in the liquid chamber 5, and as a result, a special sealing structure for the control line 13 is not required. Can be achieved. Further, by integrally connecting the diaphragm 7 and the partition wall 4, the dynamic spring constant of the partition wall 4 can be further reduced, and the vibration damping effect in a high frequency region can be further enhanced.
【００２１】図２は本発明に係る液体封入式防振装置の
他の実施の形態を示す縦断面構造であり、この実施の形
態では、仕切り壁４の主液室５側及び副液室６側に臨む
面にそれぞれ電磁石１０Ａ，１０Ｂを一体に固定し組付
けるとともに、この仕切り壁４自体に制限通路９を形成
している点で図１に示す実施の形態と相違するのみで、
その他の構成は図１の実施の形態と同様であるため、該
当部分に同一の符号を付して、それらの詳しい構造説明
は省略する。FIG. 2 is a vertical sectional view showing another embodiment of the liquid-filled type vibration damping device according to the present invention. In this embodiment, the partition wall 4 has a main liquid chamber 5 side and a sub liquid chamber 6. Only the electromagnets 10A and 10B are integrally fixed and assembled on the surfaces facing the sides, and the restriction wall 9 is formed in the partition wall 4 itself, which is different from the embodiment shown in FIG.
Since other configurations are the same as those of the embodiment of FIG. 1, corresponding portions are denoted by the same reference numerals, and detailed description of those structures is omitted.
【００２２】上記他の実施の形態による液体封入式防振
装置においても、低周波数領域の振動に対しては仕切り
壁４を固定して、主液室５の封入液体が制限通路９を経
て副液室６側に制限的に流動することによる主液室５内
の液圧変動吸収作用によって所定の防振性能が発揮さ
れ、かつ、高周波数領域の振動に対してはＭＲ流体１２
の粘度減少に伴い仕切り壁４の動ばね定数を小さくし
て、主，副二つの液室５，６の体積弾性率を応答性よく
変更させることに伴う減衰作用によって、図１の実施の
形態で示す装置と同様な防振効果を発揮させることが可
能である。In the liquid-filled type vibration damping device according to the other embodiment, the partition wall 4 is fixed to the vibration in the low frequency region, and the liquid filled in the main liquid chamber 5 is supplied through the restriction passage 9 to the auxiliary liquid. A predetermined vibration damping performance is exhibited by the fluid pressure fluctuation absorbing action in the main fluid chamber 5 due to the restricted flow to the fluid chamber 6 side, and the MR fluid 12 is protected against vibration in a high frequency region.
1 is reduced by reducing the dynamic spring constant of the partition wall 4 as the viscosity decreases, and changing the bulk modulus of the two main and sub liquid chambers 5 and 6 with good responsiveness. It is possible to exhibit the same vibration damping effect as the device shown by.
【００２３】なお、上記各実施の形態では、仕切り壁４
が円形で、電磁石１０、１０Ａ，１０Ｂが円環状形であ
り、かつ、ＭＲ流体１２も円環状に介在させたものにつ
いて説明したが、仕切り壁４を楕円形や矩形とした場
合、それに応じて電磁石１０、１０Ａ，１０Ｂの形状及
びＭＲ流体１２の介在形状を楕円環状形や矩形環状形と
してもよいこともちろんである。In each of the above embodiments, the partition wall 4
Is circular, the electromagnets 10, 10A, and 10B are annular, and the MR fluid 12 is also annularly interposed. However, when the partition wall 4 is elliptical or rectangular, the It goes without saying that the shapes of the electromagnets 10, 10A and 10B and the interposed shape of the MR fluid 12 may be an elliptical ring shape or a rectangular ring shape.
【００２４】[0024]
【発明の効果】以上のように、本発明によれば、電磁石
とそれによって発生される磁界強さの大きさによって粘
度が変化するＭＲ流体との組み合わせによって、仕切り
壁を固定したり、仕切り壁を主，副二つの液室の体積が
相対的に可変される方向に変位させたりして仕切り壁自
体の動ばね定数を任意に変化させることが可能であるた
め、低周波数領域の振動に対しては液封式防振装置が本
来備えている主液室内の液圧変動吸収作用によって所定
の防振性能を確保することができるものでありながら、
高周波数領域の振動に対しては、主，副両液室の体積弾
性率を任意に、かつ応答性よく変更させることができ、
これによって、広い高周波数領域での振動に対しても十
分な防振効果を発揮させることができる。As described above, according to the present invention, a partition wall can be fixed or a partition wall can be fixed by a combination of an electromagnet and an MR fluid whose viscosity changes depending on the magnitude of a magnetic field generated by the electromagnet. The dynamic spring constant of the partition wall itself can be changed arbitrarily by displacing the main and sub two liquid chambers in a direction in which the volume of the two liquid chambers is relatively varied. While the liquid ring type vibration isolator can secure the predetermined vibration isolation performance by the fluid pressure fluctuation absorbing action in the main liquid chamber originally provided,
With respect to vibration in the high frequency region, the bulk modulus of both the main and sub liquid chambers can be changed arbitrarily and with good responsiveness.
As a result, a sufficient anti-vibration effect can be exhibited even for vibration in a wide high-frequency region.
【００２５】しかも、ＭＲ流体の粘度を変化させるため
の磁界強さを制御する電磁石を仕切り壁に一体に組付け
ることにより、電磁石を仕切り壁の外周部に配設する場
合に比べて、装置全体をコンパクトに設計し製作するこ
とができるという効果を奏する。Further, by integrally attaching the electromagnet for controlling the magnetic field strength for changing the viscosity of the MR fluid to the partition wall, the entire apparatus can be compared with the case where the electromagnet is disposed on the outer peripheral portion of the partition wall. Can be designed and manufactured in a compact manner.
【００２６】特に、請求項２に記載のような構成を採用
することにより、仕切り壁に一体に組付けられた電磁石
用の制御線を封入液体に接触させずに外部に引き出すこ
とができ、そのため、制御線に対する特別なシール構造
も不要となり、コンパクト設計と同時に構造の簡素化、
低コスト化を図ることができる。In particular, by adopting the configuration as set forth in claim 2, the control line for the electromagnet integrally mounted on the partition wall can be drawn out without contacting the sealed liquid. , No special sealing structure for the control line is required, and the structure is simplified as well as the compact design.
Cost reduction can be achieved.
【図１】本発明に係る液体封入式防振装置の実施の形態
を示す縦断面構造図である。FIG. 1 is a longitudinal sectional structural view showing an embodiment of a liquid filled type vibration damping device according to the present invention.
【図２】本発明に係る液体封入式防振装置の他の実施の
形態を示す縦断面構造図である。FIG. 2 is a longitudinal sectional structural view showing another embodiment of the liquid filled type vibration damping device according to the present invention.
１，２ 取付部材 ３ 弾性ゴム ４ 仕切り壁 ５ 主液室 ６ 副液室 ７ ダイヤフラム ８ 空気室 ９ 制限通路 １０，１０Ａ，１０Ｂ 電磁石 １２ ＭＲ流体 １３ 制御線 １４ 磁路 1, 2 mounting member 3 elastic rubber 4 partition wall 5 main liquid chamber 6 sub liquid chamber 7 diaphragm 8 air chamber 9 restriction passage 10, 10A, 10B electromagnet 12 MR fluid 13 control line 14 magnetic path
Claims (2)
に連結される取付部材と他方に連結される取付部材並び
に両取付部材間に設けられた弾性体により形成される中
空閉空間内に、該空間内部を主，副二つの液室に仕切る
仕切り壁が両液室の体積を相対的に可変する方向に変位
可能に設けられているとともに、この仕切り壁を上記の
液室体積可変方向に変位駆動させる手段として、磁界強
さの大きさによって粘度が変化するＭＲ流体及びこのＭ
Ｒ流体の粘度を変化させるための磁界強さを制御可能な
電磁石が備えられており、かつ、両液室を互いに連通さ
せて振動発生時の主液室内の液圧変動を吸収する制限通
路が設けられてなる液体封入式防振装置であって、 上記電磁石を仕切り壁に一体に組付けていることを特徴
とする液体封入式防振装置。A mounting member connected to one of a vibration generating portion and a vibration receiving portion, a mounting member connected to the other, and a hollow closed space formed by an elastic body provided between the mounting members. A partition wall for partitioning the interior of the space into a main and a sub-liquid chamber is provided so as to be displaceable in a direction in which the volumes of the two liquid chambers are relatively varied, and the partition wall is moved in the above-described liquid chamber volume variable direction. Fluids whose viscosity changes depending on the magnitude of the magnetic field,
An electromagnet capable of controlling the magnetic field strength for changing the viscosity of the R fluid is provided, and a restriction passage that connects the two liquid chambers to each other to absorb a fluctuation in the liquid pressure in the main liquid chamber when vibration occurs is provided. A liquid-filled type vibration damping device provided, wherein the electromagnet is integrally attached to a partition wall.
気体の封入された空気室が対向状態に形成されており、
上記ダイヤフラムの中央部を仕切り壁に一体に結合し、
それらの一体結合部分を通して仕切り壁に一体に組み付
けられた電磁石用の制御線を外部に引き出していること
を特徴とする請求項１に記載の液体封入式防振装置。2. An air chamber filled with a gas is formed on the main liquid chamber side through a diaphragm so as to face each other.
The center part of the diaphragm is integrally joined to the partition wall,
2. The liquid-filled type vibration damping device according to claim 1, wherein a control line for the electromagnet integrally mounted on the partition wall is drawn out to the outside through the integral connecting portions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001004778A JP3595774B2 (en) | 2001-01-12 | 2001-01-12 | Liquid filled type vibration damping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001004778A JP3595774B2 (en) | 2001-01-12 | 2001-01-12 | Liquid filled type vibration damping device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004163456A Division JP2004301334A (en) | 2004-06-01 | 2004-06-01 | Liquid enclosed type vibrationproof device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002206591A true JP2002206591A (en) | 2002-07-26 |
| JP3595774B2 JP3595774B2 (en) | 2004-12-02 |
Family
ID=18872919
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001004778A Expired - Fee Related JP3595774B2 (en) | 2001-01-12 | 2001-01-12 | Liquid filled type vibration damping device |
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| Country | Link |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004067991A1 (en) * | 2003-01-29 | 2004-08-12 | Toyo Tire & Rubber Co., Ltd. | Liquid-sealed vibration isolating device |
| WO2004067993A1 (en) * | 2003-01-29 | 2004-08-12 | Toyo Tire & Rubber Co., Ltd. | Liquid-seal vibration isolating device |
| WO2004067992A1 (en) * | 2003-01-29 | 2004-08-12 | Toyo Tire & Rubber Co., Ltd. | Liquid-seal vibration isolating device |
| WO2004067994A1 (en) * | 2003-01-29 | 2004-08-12 | Toyo Tire & Rubber Co., Ltd. | Liquid-seal vibration isolating device |
| JP2012117666A (en) * | 2010-11-30 | 2012-06-21 | Hyundai Motor Co Ltd | Damping control device filled with magnetorheological (mr) fluid and engine mount having the same |
| KR20160059225A (en) * | 2014-11-18 | 2016-05-26 | 현대자동차주식회사 | Active engine mount for vehicle |
-
2001
- 2001-01-12 JP JP2001004778A patent/JP3595774B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004067991A1 (en) * | 2003-01-29 | 2004-08-12 | Toyo Tire & Rubber Co., Ltd. | Liquid-sealed vibration isolating device |
| WO2004067993A1 (en) * | 2003-01-29 | 2004-08-12 | Toyo Tire & Rubber Co., Ltd. | Liquid-seal vibration isolating device |
| WO2004067992A1 (en) * | 2003-01-29 | 2004-08-12 | Toyo Tire & Rubber Co., Ltd. | Liquid-seal vibration isolating device |
| WO2004067994A1 (en) * | 2003-01-29 | 2004-08-12 | Toyo Tire & Rubber Co., Ltd. | Liquid-seal vibration isolating device |
| JP2012117666A (en) * | 2010-11-30 | 2012-06-21 | Hyundai Motor Co Ltd | Damping control device filled with magnetorheological (mr) fluid and engine mount having the same |
| US8672105B2 (en) | 2010-11-30 | 2014-03-18 | Hyundai Motor Company | Damping control device filled with magnetorheological fluid and engine mount having the same |
| KR20160059225A (en) * | 2014-11-18 | 2016-05-26 | 현대자동차주식회사 | Active engine mount for vehicle |
| KR101628532B1 (en) | 2014-11-18 | 2016-06-08 | 현대자동차주식회사 | Active engine mount for vehicle |
| US9605727B2 (en) | 2014-11-18 | 2017-03-28 | Hyundai Motor Company | Active engine mount for vehicle |
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| Publication number | Publication date |
|---|---|
| JP3595774B2 (en) | 2004-12-02 |
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