JPH0527721Y2 - - Google Patents
Info
- Publication number
- JPH0527721Y2 JPH0527721Y2 JP17246487U JP17246487U JPH0527721Y2 JP H0527721 Y2 JPH0527721 Y2 JP H0527721Y2 JP 17246487 U JP17246487 U JP 17246487U JP 17246487 U JP17246487 U JP 17246487U JP H0527721 Y2 JPH0527721 Y2 JP H0527721Y2
- Authority
- JP
- Japan
- Prior art keywords
- viscosity
- orifice
- fluid
- electrorheological fluid
- electrorheological
- 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.)
- Expired - Lifetime
Links
- 239000012530 fluid Substances 0.000 claims description 81
- 238000013016 damping Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- Combined Devices Of Dampers And Springs (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
本考案は、印加電圧に応じて粘度変化されるレ
オロジー流体を封入して、主流体室と副流体室間
に設けられるオリフイス内の流体粘度を制御する
ことができる粘度可変流体封入式防振体に関す
る。[Detailed description of the invention] Industrial application field This invention controls the viscosity of the fluid in the orifice provided between the main fluid chamber and the sub-fluid chamber by sealing in a rheological fluid whose viscosity changes depending on the applied voltage. The present invention relates to a vibration isolator filled with a variable viscosity fluid.
従来の技術
この種の粘度可変流体封入式防振体としては、
たとえば特開昭60−104828号公報に開示されたも
のが知られており、電気レオロジー流体を封入し
てオリフイス内の流体粘度を変化させることによ
り、該オリフイス内の流れ状態が変化されて制振
周波数領域の調整が可能となつている。Conventional technology This type of variable viscosity fluid-filled vibration isolator is
For example, a method disclosed in Japanese Patent Application Laid-Open No. 104828/1983 is known, in which the flow state in the orifice is changed by sealing an electrorheological fluid and changing the fluid viscosity in the orifice, thereby suppressing vibration. Adjustment in the frequency domain is now possible.
従つて、かかる粘度可変流体封入式防振体にあ
つては、オリフイス内の流体粘度を変化させるに
あたつて、該オリフイス内の電気レオロジー流体
の印加される電圧を単に変化させればよく、その
構成を著しく簡単化することができる。 Therefore, in the case of such a variable viscosity fluid-filled vibration isolator, in order to change the fluid viscosity within the orifice, it is sufficient to simply change the voltage applied to the electrorheological fluid within the orifice. Its configuration can be significantly simplified.
考案が解決しようとする問題点
しかしながら、かかる従来の粘度可変流体封入
防振にあつては、オリフイス内の粘度変化は該オ
リフイス内に設けた電極板に電圧を印加すること
により発生させる構成となつている。Problems to be Solved by the Invention However, in the conventional vibration damping device filled with variable viscosity fluid, the viscosity change in the orifice is generated by applying a voltage to an electrode plate provided in the orifice. ing.
従つて、防振体によつて制振しようとする振動
の振幅が大きい場合とか周波数が高い場合は、オ
リフイス内を通過する電気レオロジー流体の流速
が速くなるため、上記電極板からオリフイス内の
電気レオロジー流体に電圧印加される時間が短く
なつてしまう。 Therefore, when the amplitude or frequency of the vibration to be suppressed by the vibration isolator is large or the frequency is high, the flow rate of the electrorheological fluid passing through the orifice becomes faster, and the electricity inside the orifice from the electrode plate increases. The time during which voltage is applied to the rheological fluid becomes shorter.
ところが、上記電気レオロジー流体は電圧が印
加されてから目的の粘度に達するまでに所定の時
間が必要とされるため、上記電極板間で電気レオ
ロジー流体の流速が速くなることは、オリフイス
内での流体粘度を十分に得ることができなくなつ
てしまう。 However, since the electrorheological fluid requires a certain amount of time to reach the desired viscosity after voltage is applied, increasing the flow rate of the electrorheological fluid between the electrode plates means that It becomes impossible to obtain sufficient fluid viscosity.
このため、振動に応じて予め設定された制御電
圧を電極板に印加したとしても、該印加電圧に対
応した振動減衰効果を得ることができなくなつて
しまうという問題点があつた。 For this reason, even if a preset control voltage depending on the vibration is applied to the electrode plate, there is a problem in that it is no longer possible to obtain a vibration damping effect corresponding to the applied voltage.
そこで、本考案はオリフイス内に導入される主
流体室又は副流体室内の電気レオロジー流体に予
め電圧を印加しておくことによつて、該電気レオ
ロジー流体がオリフイス内に導入された時に、目
的の粘度に到達するまでの時間を大幅に短縮する
ことかできる粘度可変流体封入式防振体を提供す
ることを目的とする。 Therefore, the present invention applies a voltage in advance to the electrorheological fluid in the main fluid chamber or sub-fluid chamber to be introduced into the orifice, so that when the electrorheological fluid is introduced into the orifice, the target It is an object of the present invention to provide a variable viscosity fluid-filled vibration isolator that can significantly shorten the time required to reach the viscosity.
問題点を解決するための手段
かかる目的を達成するために本考案は、入力振
動によつて容積変化される主流体室と、該主流体
室にオリフイスを介して連通され、容積可変な副
流体室と、該オリフイス内に対向配置される一対
の電極板と、を備え、上記主流体室および上記副
流体室内に、印加電圧に応じて粘度変化される電
気レオロジー流体を封入して、該電気レオロジー
流体の粘度を上記オリフイス内で変化させること
により、制振周波数領域が調整される粘度可変流
体封入式防振体において、上記オリフイスの開口
部の外側近傍に、該オリフイス内に導入される電
気レオロジー流体の粘度を予備変化させる補助電
極板を設けることにより構成する。Means for Solving the Problems In order to achieve the above object, the present invention provides a main fluid chamber whose volume is changed by input vibration, and a sub-fluid whose volume is variable and communicated with the main fluid chamber through an orifice. a chamber, and a pair of electrode plates disposed oppositely within the orifice, and an electrorheological fluid whose viscosity changes depending on the applied voltage is sealed in the main fluid chamber and the sub-fluid chamber. In a variable viscosity fluid-filled vibration isolator in which the damping frequency range is adjusted by changing the viscosity of a rheological fluid within the orifice, electricity introduced into the orifice is placed near the outside of the opening of the orifice. It is constructed by providing an auxiliary electrode plate that pre-changes the viscosity of the rheological fluid.
作 用
以上の構成により本考案にあつては、振動の入
力に伴つて主流体室又は副流体室からオリフイス
内に導入される電気レオロジー流体は、補助電極
板によつて予備的に粘度変化される。Effect With the above configuration, in the present invention, the electrorheological fluid introduced into the orifice from the main fluid chamber or the auxiliary fluid chamber in response to vibration input is preliminarily changed in viscosity by the auxiliary electrode plate. Ru.
従つて、電気レオロジー流体が上記主、副流体
室からオリフイス内に流入された時点では、ある
程度粘度変化されており、該オリフイス内で目的
の粘度を得るためには、上記予備変化された粘度
から目的の粘度までの残りの粘度を変化させれば
よい。 Therefore, when the electrorheological fluid flows into the orifice from the main and auxiliary fluid chambers, the viscosity has been changed to some extent, and in order to obtain the desired viscosity in the orifice, it is necessary to change the viscosity from the pre-changed viscosity. It is sufficient to change the remaining viscosity up to the desired viscosity.
このため、オルフイス内での実質的な粘度変化
幅は小さくなり、これに伴つてオリフイス内に電
圧を印加した後、目的の粘度で得るまでの所要時
間が大幅に短縮されることになる。 Therefore, the actual range of viscosity change within the orifice becomes smaller, and accordingly, the time required to obtain the desired viscosity after applying a voltage within the orifice is significantly shortened.
実施例
以下、本考案の実施例に基づいて詳細に説明す
る。Embodiments Hereinafter, the present invention will be described in detail based on embodiments.
第１図は本考案の一実施例を示す粘度可変流体
封入式防振体１０（以下、防振体と称す）で、該
防振体１０はエンジンマウントとして用いられる
場合に例をとつて以下述べる。 FIG. 1 shows a variable viscosity fluid-filled vibration isolator 10 (hereinafter referred to as a vibration isolator) showing an embodiment of the present invention. state
即ち、上記防振体１０は、エンジン、トランス
ミツシヨン等の結合体である図外のパワーユニツ
ト側にボルト１２を介して取付られる第１枠体１
４と、図外の車体側にボルト１６を介して取付ら
れる第２枠体１８と、これら第１、第２枠体１
４，１８間に液密的に固着される中空状の弾性体
２０とを備えている。 That is, the vibration isolator 10 is a first frame 1 that is attached via bolts 12 to a power unit (not shown) that is a combination of an engine, a transmission, etc.
4, a second frame 18 attached to the vehicle body side (not shown) via bolts 16, and these first and second frames 1
4 and 18 in a liquid-tight manner.
上記弾性体２０の中空部２０ａ内は、第２枠体
１８側に固設される断面台形状の仕切板２２によ
つて第１、第２枠体１４，１８の対向方向に隔成
され、該仕切板２２で隔成された第１枠体１４側
の室が主流体室２４とされる。 The inside of the hollow portion 20a of the elastic body 20 is separated in the direction in which the first and second frames 14 and 18 face each other by a partition plate 22 having a trapezoidal cross section and fixed to the second frame 18 side. A chamber on the first frame 14 side separated by the partition plate 22 is defined as a main fluid chamber 24.
一方、上記仕切板２２の第２枠体１８側端面は
ダイヤフラム２６で閉止され、これら仕切板２２
とダイヤフラム２６との間の室が副流体室２８と
される。また、前記第２枠体１８の最下端には蓋
部材１８ａが固設され、該蓋部材１８ａとダイヤ
フラム２６との間には空気室４８が形成される。 On the other hand, the end surface of the partition plate 22 on the second frame body 18 side is closed with a diaphragm 26, and these partition plates 22
The chamber between the diaphragm 26 and the diaphragm 26 is a sub-fluid chamber 28. Further, a lid member 18a is fixed to the lowermost end of the second frame 18, and an air chamber 48 is formed between the lid member 18a and the diaphragm 26.
上記主流体室２４と上記副流体室２８内には、
印加電圧に応じて粘度変化される電気レオロジー
流体が封入され、かつ、該主、副流体室２４，２
８は上記仕切板２２の中央部に形成されるオリフ
イス３０を介して連通される。 Inside the main fluid chamber 24 and the sub-fluid chamber 28,
An electrorheological fluid whose viscosity changes depending on the applied voltage is sealed, and the main and auxiliary fluid chambers 24, 2
8 are communicated through an orifice 30 formed in the center of the partition plate 22.
上記オリフイス３０は、上記仕切板２２を貫通
して固設される外筒３２内に内筒３４が密接して
嵌着されることにより構成され、該内筒３４の内
側には径方向に対向する一対の電極板３６，３６
ａが、該内筒３４の略全長に亘つて取り付けられ
ている。 The orifice 30 is configured by an inner cylinder 34 closely fitted into an outer cylinder 32 that is fixedly installed by penetrating the partition plate 22. A pair of electrode plates 36, 36
a is attached to the inner cylinder 34 over substantially the entire length thereof.
尚、上記内、外筒３２，３４はそれぞれ絶縁部
材によつて形成される。 The inner and outer cylinders 32 and 34 are each made of an insulating member.
そして、上記一対の電極板３６，３６ａはそれ
ぞれハーネス３８，３８ａを介して制御回路４０
および電源４２に接続される。 The pair of electrode plates 36, 36a are connected to the control circuit 40 via harnesses 38, 38a, respectively.
and is connected to a power source 42.
上記制御回路４０は、防振体１０で振動減衰し
ようとする振動の周波数領域（制振周波数領域）
に応じて、電源４２から上記電極板３６，３６ａ
に出力される電圧を制御（たとえばON，OFFに
よる時間制御）をする。 The control circuit 40 operates in a frequency range of vibrations to be damped by the vibration isolator 10 (damping frequency range).
According to the power source 42, the electrode plates 36, 36a
(for example, time control by ON/OFF).
従つて、一対の電極板３６，３６ａに制御電圧
が印加されると、オルフイス３０内の流体（電気
レオロジー流体）は該制御電圧に対応してその粘
度が変化される。 Therefore, when a control voltage is applied to the pair of electrode plates 36, 36a, the viscosity of the fluid (electrorheological fluid) within the ORPHIS 30 changes in response to the control voltage.
ここで、本実施例にあつては上記内筒３４の主
流体室２４側端部および上記外筒３２の副流体室
２８側端部をそれぞれラツパ状に延設して、該ラ
ツパ状延設部３４ａ，３２ａの内側にそれぞれ一
対の補助電極板４４，４４ａおよび４６，４６ａ
が取り付けられる。 Here, in this embodiment, the end portion of the inner cylinder 34 on the main fluid chamber 24 side and the end portion of the outer cylinder 32 on the side of the auxiliary fluid chamber 28 are each extended in a truss shape. A pair of auxiliary electrode plates 44, 44a and 46, 46a are provided inside the parts 34a, 32a, respectively.
can be installed.
そして、上記補助電極板４４，４４ａおよび４
６，４６ａには図外のハーネスを介して予備電圧
が印加される。 The auxiliary electrode plates 44, 44a and 4
A preliminary voltage is applied to 6 and 46a via a harness not shown.
以上の構成により本実施例の防振体１０にあつ
ては、第１、第２枠体１４，１８間に防振が入力
されると、先ず主流体室２４が容積変化し、この
主流体室２４の容積変化に伴つて電気レオロジー
流体はオルフイス３０を介して副流体室２８との
間で移動され、このときに電気レオロジー流体は
該オルフイス３０内で液柱振動される。 With the above configuration, in the vibration isolator 10 of this embodiment, when vibration isolation is input between the first and second frames 14 and 18, the volume of the main fluid chamber 24 changes first, and this main fluid As the volume of the chamber 24 changes, the electrorheological fluid is moved to and from the auxiliary fluid chamber 28 via the orifice 30, and at this time, the electrorheological fluid is vibrated as a liquid column within the orifice 30.
この時、上記オリフイス３０内の電極板３６，
３６ａに制御回路４０から出力される上記入力振
動（制御しようとする振動）に応じた制御電圧を
印加することにより、該オリフイス３０内の電気
レオロジー流体は、制振しようとする振動の周波
数に対応して粘度変化される。 At this time, the electrode plate 36 in the orifice 30,
By applying a control voltage corresponding to the input vibration (vibration to be controlled) outputted from the control circuit 40 to 36a, the electrorheological fluid in the orifice 30 corresponds to the frequency of the vibration to be suppressed. The viscosity changes.
ところで、本実施例にあつては主流体室２４又
は副流体室２８から電気レオロジー流体が流入さ
れる際、オリフイス３０の両端開口部に設けられ
たラツパ状延設部３４ａ，３２ａを通過する。 By the way, in this embodiment, when the electrorheological fluid flows in from the main fluid chamber 24 or the auxiliary fluid chamber 28, it passes through the flap-like extensions 34a and 32a provided at the openings at both ends of the orifice 30.
従つて、電気レオロジー流体が上記ラツパ状延
設部３４ａ，３２ａを通過する際、該ラツパ状延
設部３４ａ，３２ａの内側に設けられた補助電極
板４４，４４ａおよび４６，４６ａから予備電圧
が印加され、該電気レオロジー流体は粘度が予備
変化される。 Therefore, when the electrorheological fluid passes through the tangle-shaped extensions 34a, 32a, a preliminary voltage is applied from the auxiliary electrode plates 44, 44a and 46, 46a provided inside the trumpet-shaped extensions 34a, 32a. The electrorheological fluid is pre-changed in viscosity.
従つて、オリフイス３０には粘度が予備変化さ
れた電気レオロジー流体が導入されることにな
り、該オリフイス３０内で電気レオロジー流体を
目的の粘度まで変化させるためには、上記予備変
化された粘度から目的の粘度までの残りの粘度分
を変化させればよい。 Therefore, the electrorheological fluid whose viscosity has been pre-changed is introduced into the orifice 30, and in order to change the electrorheological fluid to the desired viscosity within the orifice 30, it is necessary to change the viscosity from the pre-changed viscosity to the desired viscosity. What is necessary is to change the remaining viscosity up to the target viscosity.
即ち、上記電気レオロジー流体はたとえば第２
図に示すような粘度特性を備えている。 That is, the electrorheological fluid may e.g.
It has viscosity characteristics as shown in the figure.
この粘度特性は横軸に電界（Ｖ／mm）、縦軸に
粘土（η）をとつて示したもので、予備変化され
た粘度をη1（この時に要する時間をT1とする）と
し、目的の粘度をη2（この時に要する時間をT2と
する）とすると、オリフイス３０内で変化させる
ための残りの粘度分は（η2−η1）となり、この粘
度変化に必要な時間（Ｔ）は（Ｔ＝T2−T1）と
なる。 This viscosity characteristic is shown with electric field (V/mm) on the horizontal axis and clay (η) on the vertical axis, where the pre-changed viscosity is η 1 (the time required at this time is T 1 ), If the desired viscosity is η 2 (the time required at this time is T 2 ), the remaining viscosity to change within the orifice 30 is (η 2 - η 1 ), and the time required for this viscosity change ( T) becomes (T=T 2 −T 1 ).
従つて、粘度を予備変化させない従来の防振体
では、目的の粘度を得るためにはT2の時間を必
要とするところ、本実施例では（T2−T1）の時
間でよく、所要時間が著しく短縮される。 Therefore, in a conventional vibration isolator in which the viscosity is not pre-changed, a time of T 2 is required to obtain the desired viscosity, but in this example, the time of (T 2 - T 1 ) is sufficient, and the required time is The time is significantly reduced.
従つて、入力振動の振幅が大きい場合とから周
波数が高い場合にあつて、オリフイス３０内の電
気レオロジー流体の流速が著しく速くなる場合に
あつても、該オリフイス３０内で電気レオロジー
流体を必要とされる粘度まで短縮のうちに変化さ
せることが可能となり、所定の液柱共振をオリフ
イス３０内で確実に発生させることができる。 Therefore, even if the flow velocity of the electrorheological fluid in the orifice 30 becomes significantly high when the input vibration has a large amplitude or a high frequency, the electrorheological fluid is not required in the orifice 30. It becomes possible to change the viscosity up to the desired viscosity within a short period of time, and a predetermined liquid column resonance can be reliably generated within the orifice 30.
従つて、本実施例の防振体１０にあつては制振
周波数領域へのチユーニングを正確に行うことが
できるため、防振しようとする振動の減衰を効果
的に行うことかできる。 Therefore, in the vibration isolator 10 of this embodiment, tuning to the vibration damping frequency region can be performed accurately, so that the vibration to be damped can be effectively damped.
尚、補助電極板４４，４４ａおよび４６，４６
ａが設けられるラツパ状延設部３４ａ，３２ａ
は、オリフイス３０内の液柱共振に影響を与えな
い形状に設定されていることはいうまでもない。 In addition, the auxiliary electrode plates 44, 44a and 46, 46
The lapel-shaped extension portions 34a and 32a provided with a
Needless to say, the shape is set so as not to affect the liquid column resonance within the orifice 30.
第３図は他の実施例を示す防振対１０ａで、前
記実施例と同一構成部分に同一符号を付して、重
複する説明を省略して述べる。 FIG. 3 shows an anti-vibration pair 10a showing another embodiment, in which the same components as in the previous embodiment are denoted by the same reference numerals, and redundant explanations will be omitted.
即ち、この実施例のオリフイス３０は二対の電
極板５０，５０ａ，５０ｂ，５０ｃを備え、か
つ、該オリフイス３０の主流体室２４側開口部に
は、ネツト状に形成された第１補助電極板５２，
５２ａが設けられると共に、副流体室２８側開口
部には、第４図に示すように副流体室２８内の断
面積全般を覆うネツト状のメツシユ板５４と仕切
板２２下面に装着される導電板５４ａとによつて
構成される第２補助電極板５６が設けられる。 That is, the orifice 30 of this embodiment includes two pairs of electrode plates 50, 50a, 50b, and 50c, and a first auxiliary electrode formed in a net shape is provided at the opening of the orifice 30 on the main fluid chamber 24 side. Plate 52,
52a, and at the opening on the side of the sub-fluid chamber 28, as shown in FIG. A second auxiliary electrode plate 56 constituted by a plate 54a is provided.
上記第１補助電極板５２，５２ａは第５図に示
すようにそれぞれ半円筒状に形成されて、仕切板
２２から立設される一対の絶縁柱５８，５８ａに
装着される。 The first auxiliary electrode plates 52, 52a are each formed into a semi-cylindrical shape as shown in FIG.
従つて、この実施例にあつても上記第１補助電
極板５２，５２ａおよび第２補助電極板５６によ
つて、オリフイス３０に導入される電気レオロジ
ー流体の粘度を予備変化させることができ、前記
実施例と同様の機能を発揮することができる。 Therefore, even in this embodiment, the viscosity of the electrorheological fluid introduced into the orifice 30 can be preliminarily changed by the first auxiliary electrode plates 52, 52a and the second auxiliary electrode plate 56. It is possible to exhibit the same functions as in the embodiment.
尚、本実施例にあつても第１補助電極板５２，
５２ａおよび第２補助電極板５６のメツシユ板５
４が、流体の通過を容易とするネツト状に形成さ
れるため、オリフイス３０内の液柱共振に第１、
第２補助電極板が影響するのが防止される。 Note that even in this embodiment, the first auxiliary electrode plate 52,
52a and the mesh plate 5 of the second auxiliary electrode plate 56
4 is formed into a net shape that facilitates the passage of fluid, so that the liquid column resonance within the orifice 30 causes the first,
The influence of the second auxiliary electrode plate is prevented.
考案の効果
以上説明したように本考案の粘度可変流体封入
式防振体にあつては、電極板が設けられたオリフ
イスの開口部の外側近傍に補助電極板を設け、該
オリフイス内に導入される電気レオロジー流体の
粘度に予備変化を与えるようにしたので、上記電
極板に印加される制御電圧により、オリフイス内
の電気レオロジー流体に所定の粘度を与える際の
所要時間を大幅に短縮化することができる。Effects of the Invention As explained above, in the variable viscosity fluid filled vibration isolator of the present invention, an auxiliary electrode plate is provided near the outside of the opening of the orifice in which the electrode plate is provided, and Since the viscosity of the electrorheological fluid in the orifice is preliminarily changed, the time required to impart a predetermined viscosity to the electrorheological fluid in the orifice by the control voltage applied to the electrode plate can be greatly reduced. I can do it.
従つて、制振しようとする振動の振幅が大きい
場合とか周波数が高い場合にあつても、オリフイ
ス内の流体粘度変化を十分に追従させることがで
き、振動の減衰効果を著しく向上させることがで
きるという優れた長所を有する。 Therefore, even when the amplitude of the vibration to be damped is large or the frequency is high, the fluid viscosity change within the orifice can be sufficiently followed, and the vibration damping effect can be significantly improved. It has excellent advantages.
第１図は本考案の一実施例を示す縦断面図、第
２図は本考案に用いられる電気レオロジー流体の
粘度変化特性図、第３図は本考案の他の実施例を
示す縦断面図、第４図は本考案に用いられる補助
電極板の一実施例を示す平面図、第５図は第３図
中の−線拡大断面図である。
１０，１０ａ……粘度可変流体封入式防振体、
２４……主流体室、２８……副流体室、３０……
オリフイス、３６，３６ａ……電極板、４４，４
４ａ，４４ｂ，４４ａ……補助電極板、５０，５
０ａ，５０ｂ，５０ｃ……電極板、５２，５２ａ
……第１補助電極板、５６……第２補助電極板。
Fig. 1 is a longitudinal cross-sectional view showing one embodiment of the present invention, Fig. 2 is a viscosity change characteristic diagram of the electrorheological fluid used in the present invention, and Fig. 3 is a longitudinal cross-sectional view showing another embodiment of the present invention. , FIG. 4 is a plan view showing one embodiment of the auxiliary electrode plate used in the present invention, and FIG. 5 is an enlarged sectional view taken along the line - in FIG. 3. 10, 10a...Viscosity variable fluid-filled vibration isolator,
24...Main fluid chamber, 28...Subfluid chamber, 30...
Orifice, 36, 36a... Electrode plate, 44, 4
4a, 44b, 44a... Auxiliary electrode plate, 50, 5
0a, 50b, 50c...electrode plate, 52, 52a
...first auxiliary electrode plate, 56...second auxiliary electrode plate.
Claims (1)
該主流体室にオリフイスを介して連通され、容積
可変な副主流室と、該オリフイス内に対向配置さ
れる一対の電極板と、を備え、上記主流体室およ
び上記副主流体室内に、印加電圧に応じて粘度変
化される電気レオロジー流体を封入して、該電気
レオロジー流体の粘度を上記オリフイス内で変化
させることにより、制振周波数領域が調整される
粘度可変流体封入式防振体において、 上記オリフイスの開口部の外側近傍に、該オリ
フイス内に導入される電気レオロジー流体の粘度
を予備変化させる補助電極板を設けたことを特徴
とする粘度可変流体封入式防振体。[Claims for Utility Model Registration] A main fluid chamber whose volume is changed by input vibration;
A sub-main flow chamber that communicates with the main fluid chamber via an orifice and has a variable volume, and a pair of electrode plates that are disposed opposite to each other in the orifice; A variable viscosity fluid-filled vibration isolator in which a damping frequency range is adjusted by enclosing an electrorheological fluid whose viscosity changes according to voltage and changing the viscosity of the electrorheological fluid within the orifice, A variable viscosity fluid-filled vibration isolator, characterized in that an auxiliary electrode plate is provided near the outside of the opening of the orifice to preliminarily change the viscosity of the electrorheological fluid introduced into the orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17246487U JPH0527721Y2 (en) | 1987-11-11 | 1987-11-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17246487U JPH0527721Y2 (en) | 1987-11-11 | 1987-11-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0177154U JPH0177154U (en) | 1989-05-24 |
| JPH0527721Y2 true JPH0527721Y2 (en) | 1993-07-15 |
Family
ID=31464435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17246487U Expired - Lifetime JPH0527721Y2 (en) | 1987-11-11 | 1987-11-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0527721Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE44814E1 (en) | 1992-10-23 | 2014-03-18 | Avocent Huntsville Corporation | System and method for remote monitoring and operation of personal computers |
-
1987
- 1987-11-11 JP JP17246487U patent/JPH0527721Y2/ja not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE44814E1 (en) | 1992-10-23 | 2014-03-18 | Avocent Huntsville Corporation | System and method for remote monitoring and operation of personal computers |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0177154U (en) | 1989-05-24 |
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