JP5972134B2 - Bypass channel type magnetorheological fluid damper - Google Patents

Bypass channel type magnetorheological fluid damper Download PDF

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JP5972134B2
JP5972134B2 JP2012221163A JP2012221163A JP5972134B2 JP 5972134 B2 JP5972134 B2 JP 5972134B2 JP 2012221163 A JP2012221163 A JP 2012221163A JP 2012221163 A JP2012221163 A JP 2012221163A JP 5972134 B2 JP5972134 B2 JP 5972134B2
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magnetorheological fluid
cylinder
flow path
shaft
end member
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JP2014074432A (en
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友祐 佐藤
友祐 佐藤
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Sanwa Tekki Corp
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Description

本発明は、外部から磁場を印加することによってその粘弾性が変化する磁気粘性流体を用いた減衰力可変ダンパであって、減衰機構がバイパス流路上に設けられるバイパス流路型磁気粘性流体ダンパに関する。   The present invention relates to a damping force variable damper using a magnetorheological fluid whose viscoelasticity is changed by applying a magnetic field from the outside, and relates to a bypass channel type magnetorheological fluid damper in which a damping mechanism is provided on the bypass channel. .

バイパス流路型磁気粘性流体ダンパは、磁気粘性流体が封入され軸線方向の両端部に磁気粘性流体の流路口を有するシリンダと、このシリンダ内に摺動可能に挿入されシリンダ内を軸線方向に第１室と第２室の２室に区画するピストンと、このピストンに連結されシリンダから延出するピストンロッドと、磁気粘性流体の流路口の相互間を連通するようにシリンダの外側に設けられる減衰力発生機構とを具備する。減衰力発生機構は、磁気粘性流体に磁場を印加して減衰力を発生する。
特許文献１に記載された減衰力発生機構においては、シリンダの流路口に連通するバイパス管内に、リザーバを兼ねた磁性体シャフトが設けられる。バイパス管内の磁性体シャフトの外周側に、磁気粘性流体の流通間隙をおいて、複数の環状の電磁石が設けられる。この流通間隙を流通する磁気粘性流体に電磁石による磁場が印加されると、それの粘弾性が変化し、それにより可変減衰力が生じる。 The bypass flow type magnetorheological fluid damper is composed of a cylinder in which the magnetorheological fluid is enclosed and a channel port for the magnetorheological fluid at both ends in the axial direction, and a cylinder slidably inserted in the cylinder and axially passing through the cylinder. Damping provided on the outside of the cylinder so as to communicate between the piston divided into the two chambers of the first chamber and the second chamber, the piston rod connected to the piston and extending from the cylinder, and the flow path port of the magnetorheological fluid A force generation mechanism. The damping force generation mechanism generates a damping force by applying a magnetic field to the magnetorheological fluid.
In the damping force generation mechanism described in Patent Document 1, a magnetic shaft that also serves as a reservoir is provided in a bypass pipe that communicates with a flow path opening of a cylinder. A plurality of annular electromagnets are provided on the outer peripheral side of the magnetic shaft in the bypass pipe with a flow gap for the magnetorheological fluid. When a magnetic field generated by an electromagnet is applied to the magnetorheological fluid flowing through this flow gap, its viscoelasticity changes, thereby generating a variable damping force.

特開２００２−１６８２８３号公報JP 2002-168283 A

上記従来のバイパス流路型磁気粘性流体ダンパにおいては、性能調整や保守点検の際に、磁性体シャフトの取り出しを必要とする場合に、減衰力発生機構であるバイパス管部をシリンダから取り外し、さらにバイパス管部を分解する必要があり、手間のかかる作業となる。
したがって、本発明は、減衰力発生機構をシリンダから取り外すことなく、磁性体シャフトを容易に取り出し、また装着することができるバイパス流路型磁気粘性流体ダンパを提供することを目的としている。 In the above-mentioned conventional bypass flow type magnetorheological fluid damper, when the magnetic material shaft needs to be taken out for performance adjustment or maintenance inspection, the bypass pipe portion, which is a damping force generation mechanism, is removed from the cylinder. It is necessary to disassemble the bypass pipe part, which is a laborious work.
Accordingly, an object of the present invention is to provide a bypass flow type magnetorheological fluid damper that can easily take out and mount a magnetic shaft without removing a damping force generating mechanism from a cylinder.

以下、添付図面の符号を参照して説明するが、本発明はこれに限定されるものではない。
上記課題を解決するための、本発明のバイパス流路型磁気粘性流体ダンパ１は、磁気粘性流体が封入され軸線方向の両端部に磁気粘性流体の流路口２ａ，２ｂを有するシリンダ２と、このシリンダ２内に摺動可能に挿入されシリンダ２内を軸線方向に第１室６と第２室７の２室に区画するピストン３と、このピストン３に連結されシリンダ２の軸線方向に延出するピストンロッド４と、第１室６と第２室７の流路口２ａ，２ｂの相互間を連通するようにシリンダ２の外側に設けられる減衰力発生機構５とを具備する。減衰力発生機構５は、磁気粘性流体に磁場を印加して減衰力を発生するもので、概略円筒状のケーシング８と、このケーシング８内に設けられる円筒状の電磁石組立体９と、この電磁石組立体９を流通間隙２４を残して貫通する磁性体シャフト１０とを具備する。ケーシング８は、磁性体製の円筒殻体１１と、この円筒殻体１１と同心の開口１２ａ，１３ａを有し、当該円筒殻体１１の両端に気密に固着される一対の端部材１２，１３と、一方の端部材１２の軸線方向外側面に取り外し可能にボルト１５にて気密に固着され、磁性体シャフト１０の一端側を支持するふた部材１４と、他方の端部材１３に固着され、磁性体シャフト１０の他端側を支持する支持部材１６とを具備する。一方の端部材１２は、シリンダ２の一方の流路口２ａに連通して磁気粘性流体を流通間隙２４に流通させる接続流路１２ｂを具備する。他方の端部材１３の開口１３ａは、接続部１７を介してシリンダ２の他方の流路口２ｂに連通する。ふた部材１４は、一方の端部材１２の開口１２ａ内へ延出し、磁性体シャフト１０の一端部に嵌合する軸支部１４ｃを具備する。支持部材１６は、他方の端部材１３の開口１３ａ内に嵌合するフランジ部１６ａと、このフランジ部１６ａから端部材１３の開口１３ａ内へ延出し磁性体シャフト１０の他端部に嵌合する軸支部１６ｂとを具備する。 Hereinafter, the present invention will be described with reference to the accompanying drawings, but the present invention is not limited thereto.
In order to solve the above problems, a bypass flow path type magnetorheological fluid damper 1 according to the present invention includes a cylinder 2 having a magnetorheological fluid sealed therein and having flow path ports 2a and 2b for the magnetorheological fluid at both ends in the axial direction. A piston 3 that is slidably inserted into the cylinder 2 and divides the inside of the cylinder 2 into two chambers of a first chamber 6 and a second chamber 7 in the axial direction, and is connected to the piston 3 and extends in the axial direction of the cylinder 2 And a damping force generating mechanism 5 provided outside the cylinder 2 so as to communicate with each other between the flow passage openings 2a and 2b of the first chamber 6 and the second chamber 7. The damping force generation mechanism 5 generates a damping force by applying a magnetic field to the magnetorheological fluid, and has a substantially cylindrical casing 8, a cylindrical electromagnet assembly 9 provided in the casing 8, and the electromagnet. And a magnetic material shaft 10 that passes through the assembly 9 leaving the flow gap 24. The casing 8 has a cylindrical shell 11 made of a magnetic material, and openings 12 a and 13 a concentric with the cylindrical shell 11, and a pair of end members 12 and 13 that are airtightly fixed to both ends of the cylindrical shell 11. And, it is removably fixed to the outer surface in the axial direction of one end member 12 with bolts 15 and is fixed to the lid member 14 for supporting one end of the magnetic shaft 10 and the other end member 13 to be magnetic. And a support member 16 that supports the other end of the body shaft 10. One end member 12 includes a connection flow path 12 b that communicates with one flow path port 2 a of the cylinder 2 and allows the magnetorheological fluid to flow through the flow gap 24. The opening 13 a of the other end member 13 communicates with the other flow path port 2 b of the cylinder 2 through the connection portion 17. The lid member 14 includes a shaft support portion 14 c that extends into the opening 12 a of one end member 12 and fits to one end portion of the magnetic shaft 10. The support member 16 fits into the opening 13a of the other end member 13, and extends from the flange portion 16a into the opening 13a of the end member 13 and fits to the other end of the magnetic shaft 10. And a shaft support 16b.

本発明のバイパス流路型磁気粘性流体ダンパは、減衰力発生機構をシリンダから取り外すことなく、磁性体シャフトを容易に取り出し、また装着することができる。   The bypass channel type magnetorheological fluid damper of the present invention can easily take out and mount the magnetic material shaft without removing the damping force generating mechanism from the cylinder.

本発明に係るバイパス流路型磁気粘性流体ダンパの断面図である。It is sectional drawing of the bypass flow-path-type magnetorheological fluid damper which concerns on this invention. 図１のバイパス流路型磁気粘性流体ダンパにおける減衰力発生機構の断面図である。FIG. 2 is a cross-sectional view of a damping force generation mechanism in the bypass channel type magnetorheological fluid damper of FIG. 1.

図面を参照して本発明の実施の形態を説明する。
図１において、バイパス流路型磁気粘性流体ダンパ１は、磁気粘性流体（磁気粘性流体）が封入されるシリンダ２と、このシリンダ２内に摺動可能に挿入されるピストン３と、このピストン３に連結されるピストンロッド４と、シリンダ２の外側に設けられる減衰力発生機構５とを具備し、シリンダ２又はピストンロッド４の一方が構築物へ、他方が制振対象へそれぞれ連結される。 Embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, a bypass flow path type magnetorheological fluid damper 1 includes a cylinder 2 in which a magnetorheological fluid (magnetorheological fluid) is sealed, a piston 3 that is slidably inserted into the cylinder 2, and the piston 3. And a damping force generating mechanism 5 provided outside the cylinder 2. One of the cylinder 2 or the piston rod 4 is connected to the structure, and the other is connected to the vibration control object.

シリンダ２は、軸線方向の両端部に磁気粘性流体の流路口２ａ，２ｂを有する。ピストン３は、シリンダ２内を軸線方向に第１室６と、第２室７の２室に区画する。   The cylinder 2 has flow path ports 2a and 2b for the magnetorheological fluid at both ends in the axial direction. The piston 3 divides the inside of the cylinder 2 into two chambers of a first chamber 6 and a second chamber 7 in the axial direction.

減衰力発生機構５は、シリンダ２の流体流路口２ａ，２ｂの相互間を連通し、そこを通過する磁気粘性流体に磁場を印加して減衰力を発生するもので、概略円筒状のケーシング８と、このケーシング８内に設けられる円筒状の電磁石組立体９と、この電磁石組立体９の内側に磁気粘性流体の流通間隙２４を形成するように、これを貫通する磁性体シャフト１０とを具備する。   The damping force generation mechanism 5 communicates between the fluid flow path ports 2a and 2b of the cylinder 2 and generates a damping force by applying a magnetic field to the magnetorheological fluid passing therethrough. And a cylindrical electromagnet assembly 9 provided in the casing 8 and a magnetic shaft 10 penetrating through the electromagnet assembly 9 so as to form a flow gap 24 for the magnetorheological fluid. To do.

図２を参照して減衰力発生機構５を説明する。ケーシング８は、磁性体製の円筒殻体１１と、それの両端に気密に固着される一対の端部材１２，１３とを有する。一方の端部材１２は、シリンダ２に固着されるバイパスホルダで構成される。一方の端部材であるバイパスホルダ１２外側面には、ふた部材１４が、ボルト１５にて取り外し可能に気密に固着され、磁性体シャフト１０の一端側を支持する。他方の端部材１３の内側には、磁性体シャフトの他端側を支持する支持部材１６が嵌合固定される。   The damping force generation mechanism 5 will be described with reference to FIG. The casing 8 includes a cylindrical shell 11 made of a magnetic material and a pair of end members 12 and 13 that are airtightly fixed to both ends thereof. One end member 12 is constituted by a bypass holder fixed to the cylinder 2. A lid member 14 is detachably and airtightly fixed to the outer surface of the bypass holder 12, which is one end member, by a bolt 15, and supports one end side of the magnetic material shaft 10. A support member 16 that supports the other end side of the magnetic shaft is fitted and fixed inside the other end member 13.

バイパスホルダ１２は、円筒殻体１１と同心の開口１２ａと、シリンダ２の一方の流路口２ａ（図１）に連通して磁気粘性流体を流通間隙２４に流通させる接続流路１２ｂとを具備する。   The bypass holder 12 includes an opening 12 a concentric with the cylindrical shell 11, and a connection flow path 12 b that communicates with one flow path port 2 a (FIG. 1) of the cylinder 2 and distributes the magnetorheological fluid to the flow gap 24. .

端部材１３は、円筒殻体１１と同心で段部１３ｂ付きの開口１３ａを具備する。開口１３ａは、支持部材１６の流路１６ｃ及び接続部１７を介してシリンダ２の他方の流路口２ｂ（図１）に連通し、磁気粘性流体を流通間隙２４に流通させる。すなわち、支持部材１６は、大径のフランジ部１６ａと、小径の軸支部１６ｂとを具備し、フランジ部１６ａにおいて段部１３ｂに嵌合する。軸支部１６ｂは、開口１３ａ内へ延出し、磁性体シャフト１０の一端部に嵌合する。   The end member 13 is concentric with the cylindrical shell 11 and includes an opening 13a with a stepped portion 13b. The opening 13 a communicates with the other flow path port 2 b (FIG. 1) of the cylinder 2 through the flow path 16 c and the connection portion 17 of the support member 16, and causes the magnetorheological fluid to flow through the flow gap 24. That is, the support member 16 includes a large-diameter flange portion 16a and a small-diameter shaft support portion 16b, and is fitted to the step portion 13b in the flange portion 16a. The shaft support portion 16 b extends into the opening 13 a and is fitted to one end portion of the magnetic material shaft 10.

接続部１７は、互いに直交する流路を有するバイパスホルダ１８と、これに接続する管部１９からなる。バイパスホルダ１８は、シリンダ２に固着され、それの流路１８ａは、シリンダ２の他方の流路口２ｂ（図１）に連通する。他端側の管部１９は、端部材１３の開口２ａの段部２ｂに気密に嵌合する嵌合部１９ａと、端部材１３の外側面にボルト止めされるフランジ部１９ｂとを具備する。   The connection part 17 includes a bypass holder 18 having flow paths orthogonal to each other and a pipe part 19 connected to the bypass holder 18. The bypass holder 18 is fixed to the cylinder 2, and its flow path 18 a communicates with the other flow path port 2 b (FIG. 1) of the cylinder 2. The tube portion 19 on the other end side includes a fitting portion 19 a that is airtightly fitted to the step portion 2 b of the opening 2 a of the end member 13, and a flange portion 19 b that is bolted to the outer surface of the end member 13.

ふた部材１４は、フランジ部１４ａと、段部１４ｂと、軸支部１４ｃとを具備する。フランジ部１４ａは、バイパスホルダ１２の外側面にボルト１５で気密に固着される。段部１４ｂは、開口１２ａの内周に気密に嵌合する。軸支部１４ｃは、フランジ部１４ａから開口１２ａ内へ延出し、先端部が磁性体シャフト１０の端部に嵌合する。軸支部１４ｃは、段部１４ｂより小径に形成され、それの外周と開口１２ａの内周との間に磁気粘性流体の流通間隙２０を形成する。   The lid member 14 includes a flange portion 14a, a step portion 14b, and a shaft support portion 14c. The flange portion 14 a is airtightly fixed to the outer surface of the bypass holder 12 with a bolt 15. The stepped portion 14b fits airtightly to the inner periphery of the opening 12a. The shaft support part 14 c extends from the flange part 14 a into the opening 12 a, and the tip part is fitted to the end part of the magnetic material shaft 10. The shaft support part 14c is formed with a smaller diameter than the step part 14b, and forms a flow gap 20 for the magnetorheological fluid between the outer periphery thereof and the inner periphery of the opening 12a.

電磁石組立体９は、複数の環状コイル２１と、それの軸線方向両側を保持する環状ヨーク２２と、両者間を埋める非磁性のリング２３とで、円筒状に一体に構成される。   The electromagnet assembly 9 is integrally formed in a cylindrical shape by a plurality of annular coils 21, an annular yoke 22 that holds both sides in the axial direction thereof, and a nonmagnetic ring 23 that fills between the two.

磁性体シャフト１０は、電磁石組立体９の内周との間に磁気粘性流体の流通間隙２４を形成して、電磁石組立体９の軸心を貫通し、両端部おいてふた部材１４と支持部材１６に支持される。流通間隙２４は、流通間隙２０を介して接続流路１２ｂに連通する。すなわち、磁性体シャフト１０は、両端に嵌合凹部１０ａ，１０ｂを有し、これに蓋体１４の軸支部１４ｃ、支持部材１６の軸支部１６ｂが嵌合する。   The magnetic body shaft 10 forms a magnetic viscous fluid flow gap 24 between the inner periphery of the electromagnet assembly 9, penetrates the shaft center of the electromagnet assembly 9, and the lid member 14 and the support member at both ends. 16 is supported. The circulation gap 24 communicates with the connection flow path 12b via the circulation gap 20. That is, the magnetic body shaft 10 has fitting recesses 10a and 10b at both ends, and the shaft support portion 14c of the lid body 14 and the shaft support portion 16b of the support member 16 are fitted to this.

性能調整や保守点検のために磁性体シャフト１０の交換を必要とする場合、まず、ふた部材１４の側から磁気粘性流体が流れ出ない姿勢に磁気粘性流体ダンパ１を配置する。その後、ふた部材１４を固定しているボルト１５を外し、ふた部材１４を取り外すことにより、ケーシング８が開封される。次いで、電磁石組立体９内に納まっている磁性体シャフト１０引き抜いた後、新たな磁性体シャフト１０を電磁石組立体９内に挿入し、その先端側の嵌合凹部１０ｂを軸支部１６ｂに嵌合させる。最後に、磁気粘性流体を充填した後、ふた部材１４を装着し、ボルト１５にて封止する。このように、電磁石組立体９、円筒状殻体１１、バイパスホルダ１２、端部材１３、接続部１７等で構成されるバイパス部全体の取外しや分解を行うことなく、磁性体シャフト１０の交換を実施することができる。
なお、図示しないが、この実施形態の減衰力発生機構は、ピストンロッドがシリンダの一端から延出する構造の磁気粘性流体ダンパにも適用できる。 When it is necessary to replace the magnetic shaft 10 for performance adjustment or maintenance / inspection, first, the magnetic viscous fluid damper 1 is arranged in a posture in which the magnetic viscous fluid does not flow out from the lid member 14 side. Thereafter, the bolt 15 that fixes the lid member 14 is removed, and the lid member 14 is removed, whereby the casing 8 is opened. Next, after pulling out the magnetic shaft 10 housed in the electromagnet assembly 9, a new magnetic shaft 10 is inserted into the electromagnet assembly 9, and the fitting recess 10b on the tip side is fitted to the shaft support portion 16b. Let Finally, after filling the magnetorheological fluid, the lid member 14 is mounted and sealed with the bolt 15. In this way, the magnetic shaft 10 can be replaced without removing or disassembling the entire bypass portion composed of the electromagnet assembly 9, the cylindrical shell 11, the bypass holder 12, the end member 13, the connection portion 17, and the like. Can be implemented.
Although not shown, the damping force generation mechanism of this embodiment can also be applied to a magnetorheological fluid damper having a structure in which a piston rod extends from one end of a cylinder.

１ 磁気粘性流体ダンパ
２ シリンダ
２ａ 磁気粘性流体の流路口
２ｂ 磁気粘性流体の流路口
３ ピストン
４ ピストンロッド
５ 減衰力発生機構
６ 第１室
７ 第２室
８ ケーシング
９ 電磁石組立体
１０ 磁性体シャフト
１０ａ 嵌合凹部
１０ｂ 嵌合凹部
１１ 円筒状殻体
１２ バイパスホルダ（一方の端部材）
１２ａ 開口
１２ｂ 接続流路
１３ 他方の端部材
１３ａ 開口
１３ｂ 段部
１４ ふた部材
１４ａ フランジ部
１４ｂ 段部
１４ｃ 軸支部
１５ ボルト
１６ 支持部材
１６ａ フランジ部
１６ｂ 軸支部
１６ｃ 流路
１７ 接続部
１８ バイパスホルダ
１９ 管部
２０ 流通間隙
２１ 環状コイル
２２ 環状ヨーク
２３ 非磁性リング
２４ 流通間隙 1 Magnetorheological Fluid Damper 2 Cylinder 2a Magnetorheological Fluid Channel Port 2b Magnetorheological Fluid Channel Port 3 Piston 4 Piston Rod 5 Damping Force Generation Mechanism 6 First Chamber 7 Second Chamber 8 Casing 9 Electromagnet Assembly 10 Magnetic Shaft 10a Fitting recess 10b Fitting recess 11 Cylindrical shell 12 Bypass holder (one end member)
12a Opening 12b Connection channel 13 Other end member 13a Opening 13b Step 14 Lid 14a Flange 14b Step 14c Shaft support 15 Bolt 16 Support member 16a Flange 16b Shaft support 16c Flow path 17 Connection 18 Bypass holder 19 Tube Part 20 Flow gap 21 Ring coil 22 Ring yoke 23 Non-magnetic ring 24 Flow gap

Claims (5)

磁気粘性流体が封入され軸線方向の両端部に磁気粘性流体の流路口を有するシリンダと、このシリンダ内に摺動可能に挿入されシリンダ内を軸線方向に第１室と第２室の２室に区画するピストンと、このピストンに連結され前記シリンダの軸線方向に当該シリンダから延出するピストンロッドと、前記第１室と第２室の流路口の相互間を連通するように前記シリンダの外側に固着され磁気粘性流体に磁場を印加して減衰力を発生する減衰力発生機構と、を具備する磁気粘性流体ダンパであって、
前記減衰力発生機構は、一端側が接続流路を介して直接前記シリンダの一方の流路口に連通し他端側が接続部を介して前記シリンダの他方の流路口に連通するように前記シリンダの外側に固着され内部に磁気粘性流体を流通させる概略円筒状のケーシングと、このケーシング内に設けられる円筒状の電磁石組立体と、この電磁石組立体の内周との間に磁気粘性流体の流通間隙を形成して当該電磁石組立体の軸心を貫通するようにケーシングに支持される磁性体シャフトと、を具備し、
前記ケーシングは、磁性体製の円筒殻体と、この円筒殻体と同心の開口を有し当該円筒殻体の両端に気密に固着される一対の端部材と、一方の端部材の軸線方向外側面に取り外し可能にボルトにて気密に固着され前記磁性体シャフトの一端側を支持するふた部材と、他方の端部材に固着され前記磁性体シャフトの他端側を支持する支持部材とを具備し、
前記一方の端部材は、前記シリンダの一方の流路口に連通して磁気粘性流体を前記流通間隙に流通させる前記接続流路を具備し、
前記他方の端部材の開口は、前記接続部を介して前記シリンダの他方の流路口に連通し、
前記ふた部材は、前記一方の端部材の開口内へ延出し前記磁性体シャフトの一端部に嵌合する軸支部を具備し、
前記支持部材は、前記他方の端部材の開口内に嵌合するフランジ部と、このフランジ部から端部材の開口内へ延出し前記磁性体シャフトの他端部に嵌合する軸支部とを具備することを特徴とするバイパス流路型磁気粘性流体ダンパ。 A cylinder having a magnetorheological fluid sealed therein and having a channel opening for the magnetorheological fluid at both ends in the axial direction, and a cylinder slidably inserted in the cylinder into the first chamber and the second chamber in the axial direction. A piston to be partitioned, a piston rod connected to the piston and extending from the cylinder in the axial direction of the cylinder, and an outside of the cylinder so as to communicate with each other between the flow path ports of the first chamber and the second chamber A damping force generating mechanism that generates a damping force by applying a magnetic field to the magnetorheological fluid that is fixed, and a magnetorheological fluid damper comprising:
The damping force generation mechanism is configured such that one end side communicates directly with one flow path port of the cylinder via a connection flow path, and the other end side communicates with the other flow path port of the cylinder via a connection portion. A generally cylindrical casing that is fixedly attached to the inside of the casing and that circulates the magnetorheological fluid therein, a cylindrical electromagnet assembly provided in the casing, and an inner circumference of the electromagnet assembly. A magnetic shaft that is formed and supported by the casing so as to pass through the axis of the electromagnet assembly,
The casing includes a magnetic cylindrical shell, a pair of end members that have openings concentric with the cylindrical shell, and are hermetically fixed to both ends of the cylindrical shell, and an axially outer side of one end member. A lid member that is removably fixed to the side surface with bolts and supports one end of the magnetic shaft; and a support member that is fixed to the other end member and supports the other end of the magnetic shaft. ,
The one end member includes the connection flow path that communicates with one flow path port of the cylinder and allows the magnetorheological fluid to flow through the flow gap,
The opening of the other end member communicates with the other channel port of the cylinder via the connection portion,
The lid member includes a shaft support portion that extends into the opening of the one end member and fits to one end portion of the magnetic shaft,
The support member includes a flange portion that fits into the opening of the other end member, and a shaft support portion that extends from the flange portion into the opening of the end member and fits to the other end portion of the magnetic shaft. A bypass flow path type magnetorheological fluid damper characterized in that: 前記ふた部材は、前記一方の端部材の軸線方向外側面にボルトで気密に固着されるフランジ部を具備し、前記軸支部は、前記端部材の内周より小径で、当該内周との間に磁気粘性流体の流通間隙を形成し、
前記磁性体シャフトは、両端に、前記蓋体の軸支部を嵌合させる嵌合凹部を有することを特徴とする請求項１に記載のバイパス流路型磁気粘性流体ダンパ。 The lid member includes a flange portion that is airtightly secured to the outer surface in the axial direction of the one end member with a bolt, and the shaft support portion is smaller in diameter than the inner periphery of the end member and between the inner periphery and the inner periphery. Forming a flow gap for the magnetorheological fluid,
2. The bypass flow path type magnetorheological fluid damper according to claim 1, wherein the magnetic material shaft has fitting recesses for fitting the shaft support portions of the lid at both ends. 前記ふた部材は、前記端部材の内周に気密に嵌合する段部を有し、前記軸支部はこの段部より小径に形成されることを特徴とする請求項２に記載のバイパス流路型磁気粘性流体ダンパ。   3. The bypass flow path according to claim 2, wherein the lid member has a stepped portion that is airtightly fitted to an inner periphery of the end member, and the shaft support portion is formed to have a smaller diameter than the stepped portion. Type magnetorheological fluid damper. 前記接続部は、一端側において前記シリンダの他方の流路口に連通するバイパスホルダと、このバイパスホルダと直交し他端側において前記他方の端部材の開口に気密に嵌合する嵌合部を有する管部とを具備することを特徴とする請求項１に記載のバイパス流路型磁気粘性流体ダンパ。   The connecting portion includes a bypass holder that communicates with the other flow path port of the cylinder on one end side, and a fitting portion that is orthogonal to the bypass holder and that fits airtightly on the opening of the other end member on the other end side. The bypass channel type magnetorheological fluid damper according to claim 1, further comprising a pipe portion. 前記接続部の管部は、前記他方の端部材の外側面にボルト止めされるフランジ部をさらに具備し、前記嵌合部の先端が前記支持部材のフランジ部の外側面に当接することを特徴とする請求項４に記載のバイパス流路型磁気粘性流体ダンパ。   The pipe portion of the connection portion further includes a flange portion bolted to the outer side surface of the other end member, and the tip of the fitting portion abuts on the outer side surface of the flange portion of the support member. The bypass channel type magnetorheological fluid damper according to claim 4.
JP2012221163A 2012-10-03 2012-10-03 Bypass channel type magnetorheological fluid damper Active JP5972134B2 (en)

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