JP2011122668A - Liquid enclosed vibration-proofing device - Google Patents

Liquid enclosed vibration-proofing device Download PDF

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JP2011122668A
JP2011122668A JP2009280862A JP2009280862A JP2011122668A JP 2011122668 A JP2011122668 A JP 2011122668A JP 2009280862 A JP2009280862 A JP 2009280862A JP 2009280862 A JP2009280862 A JP 2009280862A JP 2011122668 A JP2011122668 A JP 2011122668A
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membrane
hole
liquid
partition member
membrane support
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JP5436180B2 (en
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Tatsuya Tsutsumi
龍也 堤
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Bridgestone Corp
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Bridgestone Corp
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Priority to EP10835631.2A priority patent/EP2511565B1/en
Priority to PCT/JP2010/006059 priority patent/WO2011070700A1/en
Priority to US13/514,785 priority patent/US9046147B2/en
Priority to CN201080062103.0A priority patent/CN102713341B/en
Publication of JP2011122668A publication Critical patent/JP2011122668A/en
Priority to IN5188DEN2012 priority patent/IN2012DN05188A/en
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Priority to US14/276,100 priority patent/US9435395B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid enclosed vibration-proofing device which can prevent the change of characteristics by the change of membrane variation and destruction by the deformation of a member. <P>SOLUTION: The liquid enclosed vibration-proofing device includes a core member, a cylindrical member, an elastic member, a diaphragm, a fluid chamber, and a partition member. The partition member has a membrane, a membrane support portion, a membrane retainer, and a limit passage. The membrane support portion and the membrane retainer each have a through-hole. Three or more beams are provided that extend in at least one of the through-holes of the membrane support portion or the membrane retainer. By extending each beam from the hole edge of the through-hole while avoiding the center of the through-hole and by connecting the beams to the intermediate portions of other adjacent beams, the through-hole is divided into a plurality of windows. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は液封入式防振装置、より詳細には、主液室及び副液室内の液体が制限通路内を流動する際の通路内の液柱共振、液体が制限通路から受ける流動抵抗、弾性部材の変形等に基づいて、振動発生側に入力された振動を減衰するとともに、振動伝達側部材に対して絶縁する液封入式防振装置、なかでも、主液室と副液室とを区画する仕切部材の変形等による高周波防振特性の変化や、液圧上昇による異音の発生、仕切部材の構成部分の破損等を防止することが可能な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, and more specifically, liquid column resonance in the passage when the liquid in the main liquid chamber and the sub liquid chamber flows in the restricted passage, the flow resistance that the liquid receives from the restricted passage, and elasticity A liquid-filled vibration isolator that attenuates the vibration input to the vibration generating side and insulates it from the vibration transmitting side member based on deformation of the member, and in particular, separates the main liquid chamber and the sub liquid chamber The present invention relates to a liquid filled type vibration isolator capable of preventing a change in high-frequency vibration isolation characteristics due to deformation of a partition member to be generated, generation of abnormal noise due to an increase in liquid pressure, damage to a component part of the partition member, and the like.

従来、エンジン等の振動発生側部材から車体フレーム等の振動伝達側部材への振動の伝達を抑制するための防振装置としては、例えば特許文献１に記載されたもののように、装置内部に液体を封入した液封入式防振装置がある。   Conventionally, as an anti-vibration device for suppressing vibration transmission from a vibration generating side member such as an engine to a vibration transmitting side member such as a vehicle body frame, a liquid is provided inside the device, for example, as described in Patent Document 1. There is a liquid-sealed anti-vibration device in which

即ち、特許文献１には、「第１取付け具と、筒状の第２取付け具と、これらを連結するゴム状弾性材から成る防振基体と、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第１液室と前記ダイヤフラム側の第２液室に仕切る仕切り体と、前記第１液室と第２液室を連通させるオリフィスとを備え、前記仕切り体は、弾性仕切り膜と、この弾性仕切り膜の変位量をその両側から規制する一対の互いに連結された格子部材とから成る液封入式防振装置であって、前記第２取付け具の内周部と、少なくとも一方側の格子部材との間に弾性体が介在して、前記仕切り体が前記第２取付け具に弾性支持されている液封入式防振装置」が記載されており、この液封入式防振装置では、「より高い高周波数域で低動ばね化を図ることができる」とする。   That is, Patent Document 1 states that “a first mounting tool, a cylindrical second mounting tool, a vibration-proof base made of a rubber-like elastic material that connects them, and a second mounting tool that is attached to the second mounting tool and the anti-vibration base. A diaphragm that forms a liquid sealing chamber between the vibration base, a partition that partitions the liquid sealing chamber into a first liquid chamber on the vibration isolation base and a second liquid chamber on the diaphragm, and the first liquid chamber And an orifice for communicating the second liquid chamber, and the partition body is a liquid-filled type comprising an elastic partition membrane and a pair of interconnected lattice members that regulate the amount of displacement of the elastic partition membrane from both sides thereof In the vibration isolator, an elastic body is interposed between an inner peripheral portion of the second fixture and at least one lattice member, and the partition body is elastically supported by the second fixture. Liquid-filled vibration isolator "is described. The location, the "can be made low dynamic spring of a higher high frequency range."

しかし、このような従来技術において、加工の容易性及び軽量化等の観点から、前記仕切り体を合成樹脂材料によって形成した場合、その仕切り体が、装置内に封入した液体によって膨潤することにより、周面を剛性部材にて拘束されることになる前記格子部材が、仕切り体の厚み方向でいずれかの液室側に向けて凸となる形状に変形してしまうという問題があり、これによって、装置の高周波防振特性が変化し、また、液圧上昇による異音の発生、甚だしくは格子部材の破損等が生じるという問題があった。また、このような変形は、その仕切り体が、カシメ等による外力を受けた際にも同様に生じてしまうことが知られている。   However, in such a conventional technique, from the viewpoint of ease of processing and weight reduction, when the partition body is formed of a synthetic resin material, the partition body is swollen by the liquid enclosed in the apparatus, There is a problem that the lattice member whose peripheral surface is to be restrained by a rigid member is deformed into a shape that is convex toward one of the liquid chambers in the thickness direction of the partition, There has been a problem that the high-frequency vibration isolating characteristics of the apparatus are changed, and abnormal noise is generated due to an increase in fluid pressure, or the lattice member is severely damaged. In addition, it is known that such a deformation similarly occurs when the partition body receives an external force due to caulking or the like.

特開第２００５−２７３６８９号公報Japanese Patent Laid-Open No. 2005-27389

そこで、本発明は、主及び副液室間を仕切る仕切部材がカシメ等の外力を受けることによる仕切部材の構成部分の変位や、該構成部分を合成樹脂材料で形成した場合の材料の膨潤による変位を抑制し、装置の高周波防振特性の変化、液圧上昇による異音の発生、及び部材の変形による破壊が生じることのない液封入式防振装置を提供することを目的とする。   Therefore, the present invention is based on the displacement of the component part of the partition member when the partition member that partitions the main and sub liquid chambers receives external force such as caulking, and the swelling of the material when the component part is formed of a synthetic resin material. It is an object of the present invention to provide a liquid filled type vibration damping device that suppresses displacement and does not cause a change in high frequency vibration damping characteristics of the device, generation of abnormal noise due to an increase in fluid pressure, and destruction due to deformation of members.

発明者らは、上記課題を解決する液封入式防振装置を提供すべく鋭意検討していたところ、仕切部材において弾性仕切り膜（メンブラン）の変位量を規制する構成部分の少なくとも一方の形状を工夫して設計することが効果的であることを知見し、本発明を完成するに到った。
従って、上記課題を解決する本発明の要旨構成は、以下の通りである。 The inventors have intensively studied to provide a liquid-filled vibration isolator that solves the above-described problems, and at least one shape of a component that regulates the amount of displacement of the elastic partition film (membrane) in the partition member is determined. The inventors have found that it is effective to devise and design, and have completed the present invention.
Accordingly, the gist of the present invention for solving the above-described problems is as follows.

本発明の液封入式防振装置は、振動発生側もしくは振動伝達側のいずれか一方側に連結されるコア部材と、他方側に連結される筒状部材と、該筒状部材を、一方の端部側で前記コア部材の外周面に液密に連結する弾性部材と、前記筒状部材の他方の端部側に液密に取り付けたダイヤフラムと、該ダイヤフラムの内側に区画される空間内に非圧縮性の液体を封入してなる流体室と、該流体室を前記コア部材側の主液室と、前記ダイヤフラム側の副液室とに仕切る仕切部材とを具え、
前記仕切部材が、メンブランと、該メンブランを支持するメンブラン支持部と、該メンブラン支持部とともに前記メンブランの変形量もしくは変位量を制限するメンブラン押さえと、前記主液室と副液室との連通をもたらす制限通路とを有するとともに、前記メンブラン支持部及び前記メンブラン押さえのそれぞれが、前記主及び副液室の方向に貫通する貫通孔を有する液封入式防振装置であって、
前記メンブラン支持部及び前記メンブラン押さえの少なくとも一方の前記貫通孔内に延在する３本以上の梁を設けるとともに、各梁を、該貫通孔の孔縁から該貫通孔の中心を避けて延在させて、隣接する他の梁の中間部に連結することによって前記貫通孔を複数の窓に区画してなることを特徴とするものである。 The liquid-filled vibration isolator of the present invention includes a core member connected to either the vibration generation side or the vibration transmission side, a cylindrical member connected to the other side, and the cylindrical member An elastic member that is liquid-tightly connected to the outer peripheral surface of the core member on the end side, a diaphragm that is liquid-tightly attached to the other end side of the cylindrical member, and a space defined inside the diaphragm A fluid chamber enclosing an incompressible liquid; a partition member that partitions the fluid chamber into a main liquid chamber on the core member side and a sub liquid chamber on the diaphragm side;
The partition member communicates the membrane, a membrane support portion that supports the membrane, a membrane retainer that restricts deformation or displacement of the membrane together with the membrane support portion, and communication between the main liquid chamber and the auxiliary liquid chamber. Each of the membrane support part and the membrane presser has a through-hole penetrating in the direction of the main and sub liquid chambers,
Three or more beams extending into the through hole of at least one of the membrane support part and the membrane pressing member are provided, and each beam extends from the hole edge of the through hole so as to avoid the center of the through hole. The through hole is divided into a plurality of windows by being connected to an intermediate portion of another adjacent beam.

請求項１に記載したところにおいて、より好ましくは、前記梁を設けた貫通孔を有する前記メンブラン支持部及び前記メンブラン押さえの少なくとも一方を、合成樹脂によって構成する。   More preferably, at least one of the membrane support portion having the through hole provided with the beam and the membrane pressing member is made of a synthetic resin.

ここで、上記合成樹脂としては、特に制限するものではなく、例えば、６ナイロン（ＰＡ６）、６６ナイロン（ＰＡ６６）、ポリフェニレンサルファイド（ＰＰＳ）及びポリプロピレン（ＰＰ）等が挙げられる。   Here, the synthetic resin is not particularly limited, and examples thereof include 6 nylon (PA6), 66 nylon (PA66), polyphenylene sulfide (PPS), and polypropylene (PP).

請求項１または２に記載したところにおいて、好ましくは、前記梁の厚み寸法ｄを該梁の幅寸法Ｗよりも大きくする。   Preferably, the thickness dimension d of the beam is made larger than the width dimension W of the beam.

請求項１〜３のいずれかに記載したところにおいて、好ましくは、前記梁によって区画される複数の窓の配置を、前記仕切部材の厚み方向と垂直な平面内で回転対称とする。   In the place described in any one of Claims 1-3, Preferably, arrangement | positioning of the several window divided by the said beam shall be rotationally symmetric within the plane perpendicular | vertical to the thickness direction of the said partition member.

ここで、本発明において「回転対称」とは、貫通孔の中心を軸に前記平面内で３６０°回転させる間に、窓の配置が回転前の配置と一致したものとなる回転位置が、少なくとも２つ以上あることを言う。   Here, in the present invention, “rotational symmetry” means that the rotational position at which the arrangement of the windows coincides with the arrangement before the rotation while rotating 360 ° in the plane about the center of the through hole. Say there are two or more.

請求項１〜４のいずれかに記載したところにおいて、好ましくは、前記梁を、前記仕切部材の厚み方向と直角な平面内で湾曲または屈折した形状とする。   Preferably, the beam is curved or refracted in a plane perpendicular to the thickness direction of the partition member.

請求項１〜５のいずれかに記載したところにおいて、好ましくは、前記梁を設けた貫通孔を円形とする。   Preferably, the through hole provided with the beam is circular.

請求項１〜６のいずれかに記載したところにおいて、好ましくは、前記貫通孔の中心から前記梁の幅方向中心線に引いた垂線の長さを、前記梁の幅寸法Ｗの２〜５倍の範囲とする。   Preferably, the length of a perpendicular drawn from the center of the through hole to the center line in the width direction of the beam is 2 to 5 times the width dimension W of the beam. The range.

本発明の液封入式防振装置に用いることができる仕切部材９を底面図及び断面図で例示する図１（ａ）及び（ｂ）において、仕切部材９は、メンブラン１０と、メンブラン支持部１１と、メンブラン押さえ１２と、制限通路１３とを有する。メンブラン支持部１１には貫通孔１４が配されるとともに、貫通孔１４には、図示例では、該貫通孔１４の孔縁から該貫通孔１４の中心Ｇを避けて直線状に延在する４本の梁１５が設けられており、この梁１５は、隣接する他の梁１５の中間部に連結することによって、前記貫通孔を５つの窓１６，１７に区画している。
尚、図に示すところでは明確ではないが、メンブラン押さえ１２にも同様の貫通孔が配されており、この貫通孔は相互に交差する直線的な２本の梁によって４つの小窓に区画されている。ここで、メンブラン１０はゴム膜その他の膜状弾性体により、メンブラン支持部１１は合成樹脂材料により、そして、メンブラン押さえ１２は金属により、それぞれ構成されている。
また、図示例では、前記貫通孔１４の直径Ｄをφ４４、前記梁１５の幅Ｗを１．５ｍｍ、同梁１５の厚みｄを３ｍｍとしている。ここで、Ｗ及びｄは、Ｗ＜ｄの関係を満たすものとする。 In FIGS. 1A and 1B illustrating a partition member 9 that can be used in the liquid-filled vibration isolator of the present invention in a bottom view and a sectional view, the partition member 9 includes a membrane 10 and a membrane support portion 11. And a membrane retainer 12 and a restriction passage 13. The membrane support 11 is provided with a through hole 14. In the illustrated example, the through hole 14 extends linearly from the hole edge of the through hole 14 to avoid the center G of the through hole 14. A beam 15 is provided, and this beam 15 divides the through hole into five windows 16 and 17 by being connected to an intermediate portion of another adjacent beam 15.
Although not clearly shown in the figure, the membrane retainer 12 is also provided with a similar through hole, and this through hole is divided into four small windows by two linear beams intersecting each other. ing. Here, the membrane 10 is composed of a rubber film or other film-like elastic body, the membrane support 11 is composed of a synthetic resin material, and the membrane retainer 12 is composed of metal.
In the illustrated example, the diameter D of the through hole 14 is φ44, the width W of the beam 15 is 1.5 mm, and the thickness d of the beam 15 is 3 mm. Here, W and d shall satisfy the relationship of W <d.

以上のような仕切部材９を適用してなる、本発明の液封入式防振装置は、図１に示すように、前記メンブラン支持部１１及び前記メンブラン押さえ１２の少なくとも一方の貫通孔１４内に延在する３本以上（図示例では４本）の梁１５を設けるとともに、各梁１５を、該貫通孔１４の孔縁から該貫通孔１４の中心Ｇを避けて延在させて、隣接する他の梁１５の中間部に連結することによって前記貫通孔１４を複数の（図示例では５つの）窓１６，１７に区画してなることを特徴とする。   As shown in FIG. 1, the liquid-filled vibration isolator of the present invention to which the partition member 9 as described above is applied is disposed in at least one through-hole 14 of the membrane support portion 11 and the membrane presser 12. Three or more (four in the illustrated example) extending beams 15 are provided, and each beam 15 is extended from the hole edge of the through hole 14 so as to avoid the center G of the through hole 14 and adjacent to each other. The through hole 14 is divided into a plurality of (in the illustrated example, five) windows 16 and 17 by being connected to an intermediate portion of another beam 15.

上記手法にて梁１５を設ける場合、貫通孔１４は、各梁１５によって該貫通孔１４の中央部に区画される窓１７（以下、中央窓１７と称呼する場合がある）と、２本の梁１５及び貫通孔１４の孔縁により区画されて前記中央窓１７の周囲に位置する窓１６（以下、外側窓１６と称呼する場合がある）とに区画されることになる。尚、縁部窓１６の数は、貫通孔１４に設けた前記梁１５の本数と等しくなる。また、図示されていないが、前記中央窓１７は梁１５と同一の材料で埋められていてもよい。   When the beam 15 is provided by the above method, the through hole 14 includes a window 17 (hereinafter sometimes referred to as the central window 17) partitioned by each beam 15 at the center of the through hole 14, and two The window 15 is defined by the hole edges of the beam 15 and the through hole 14 and is positioned around the central window 17 (hereinafter may be referred to as the outer window 16). The number of edge windows 16 is equal to the number of the beams 15 provided in the through hole 14. Although not shown, the central window 17 may be filled with the same material as the beam 15.

この構造によれば、仕切部材９のメンブラン支持部１１が、カシメ等による外力を受けて、或いは、装置内に封入した液体により膨潤して、半径方向の内方側に向けて変形した場合、各梁１５は、貫通孔１４を縮径させる方向の力を受けて隣接する他の梁１５の中間部を押圧するも、該他の梁１５がその押圧方向に撓むことによって縮径方向の力を効果的に緩和する。そのため、これら梁１５は、仕切部材９の厚み方向に変形することなく、該厚み方向と直角の平面内で撓み変形することとなるので、各梁１５とメンブラン１０との間隔は常に一定に維持されることになる。
尚、図１（ａ）に示す仕切部材９の各梁１５が上記のように撓みδθを生じる場合、貫通孔１４の中央部に位置する中央窓１７は、反時計回りに回転する。 According to this structure, when the membrane support portion 11 of the partition member 9 receives external force due to caulking or the like, or swells with the liquid enclosed in the apparatus and deforms toward the inner side in the radial direction, Each beam 15 receives a force in the direction of reducing the diameter of the through-hole 14 and presses an intermediate portion of another adjacent beam 15, but when the other beam 15 is bent in the pressing direction, Effectively relieve power. For this reason, these beams 15 are not deformed in the thickness direction of the partition member 9 but are deformed in a plane perpendicular to the thickness direction, so that the distance between each beam 15 and the membrane 10 is always kept constant. Will be.
In the case where the beams 15 of the partition member 9 shown in FIG. 1 (a) results in a deflection [delta] theta as described above, the central window 17 located in the central portion of the through hole 14 is rotated counterclockwise.

これがため、高周波振動入力に対する、メンブラン１０の変動量が変化することがなく、これによる装置の防振特性の変化を防止することができる。
即ち、本発明により、仕切部材に用いた構成部分のカシメ等の外力等に起因する、装置の特性変化や異音の発生及び部材の破壊等の不具合を防止した液封入式防振装置を提供することが可能となる。 For this reason, the fluctuation amount of the membrane 10 with respect to the high-frequency vibration input does not change, and the change in the vibration isolation characteristics of the apparatus due to this can be prevented.
That is, according to the present invention, there is provided a liquid-filled vibration isolator that prevents problems such as changes in device characteristics, abnormal noise, and member destruction caused by external forces such as caulking of components used in the partition member. It becomes possible to do.

また、本発明の防振装置においては、加工容易性の観点から、前記梁１５を設けた貫通孔１４を有する前記メンブラン支持部１１及び前記メンブラン押さえ１２の少なくとも一方を、合成樹脂によって構成することができる。この場合、合成樹脂で構成した構成部分の膨潤による変位も、本発明の構成によって抑制することができるため、装置の防振特性を損ねることなく加工容易性を確保することが可能である。   Moreover, in the vibration isolator of the present invention, from the viewpoint of ease of processing, at least one of the membrane support portion 11 having the through hole 14 provided with the beam 15 and the membrane retainer 12 is made of a synthetic resin. Can do. In this case, since displacement due to swelling of the constituent parts made of synthetic resin can also be suppressed by the structure of the present invention, it is possible to ensure ease of processing without impairing the vibration isolation characteristics of the apparatus.

さらに、本発明の防振装置において、図示例のように、前記梁１５の厚み寸法ｄを該梁１５の幅寸法Ｗよりも大きくすることが好ましい。
Ｗ＜ｄとすれば、梁１５を前記平面内でより屈曲させやすくし、逆に厚み方向に屈曲させにくくさせることができるので、本発明による装置の防振特性の変化抑制効果をより有利に発揮させることができる。 Furthermore, in the vibration isolator of the present invention, it is preferable that the thickness dimension d of the beam 15 is larger than the width dimension W of the beam 15 as illustrated.
If W <d, the beam 15 can be bent more easily in the plane, and conversely, it can be made difficult to bend in the thickness direction. It can be demonstrated.

加えて、本発明の防振装置において、図示例のように、前記梁１５によって区画される複数の窓１６，１７の配置が、前記仕切部材９の厚み方向と直角な平面内で回転対称であることが好ましい。
窓１６，１７の配置を前記平面内で回転対称とすれば、メンブラン支持部１１に圧縮変形が生じた際に、各梁１５が均等に撓みやすくなる。この場合、中央窓１７は貫通孔１４の中心Ｇを軸に、その位置を変化させることなく回転するので、例えば、いずれかの窓１６，１７の面積の極端な変化生じてしまうことがなく、これに起因する装置の防振特性の変化を防止することができる。 In addition, in the vibration isolator of the present invention, as in the illustrated example, the arrangement of the plurality of windows 16 and 17 partitioned by the beam 15 is rotationally symmetric in a plane perpendicular to the thickness direction of the partition member 9. Preferably there is.
If the arrangement of the windows 16 and 17 is rotationally symmetric within the plane, the beams 15 are easily bent evenly when the membrane support portion 11 undergoes compressive deformation. In this case, since the central window 17 rotates around the center G of the through hole 14 without changing its position, for example, an extreme change in the area of any one of the windows 16 and 17 does not occur. It is possible to prevent a change in the vibration isolation characteristics of the apparatus due to this.

さらにまた、本発明の防振装置において、前記梁を、前記仕切部材の厚み方向と直角な平面内で湾曲または屈折した形状とすることにより、梁が前記平面内で撓みやすくなり、梁の縮径方向の変形をより吸収させやすくすることができるので、メンブランとメンブラン支持部との距離ｘを変化させることなく、メンブラン支持部のカシメ等による半径方向内向きの変形を該梁の変形によって吸収させることができる。即ち、この構造によれば、仕切部材のメンブラン支持部が半径方向の内方側に向けて変形した場合、各梁は、圧縮方向の力を受けることになるも、湾曲形態を有することから、それの厚み方向に撓むことなく、該厚み方向と直角の平面内で撓み変形することとなるので、メンブランとメンブラン支持部との間隔は常に一定に維持されることになる。   Furthermore, in the vibration isolator of the present invention, the beam is bent or refracted in a plane perpendicular to the thickness direction of the partition member, so that the beam is easily bent in the plane and the beam is contracted. Since the radial deformation can be more easily absorbed, the inward deformation in the radial direction due to caulking of the membrane support portion is absorbed by the deformation of the beam without changing the distance x between the membrane and the membrane support portion. Can be made. That is, according to this structure, when the membrane support portion of the partition member is deformed toward the inner side in the radial direction, each beam receives a force in the compression direction, but has a curved shape. Since it bends and deforms in a plane perpendicular to the thickness direction without bending in the thickness direction, the distance between the membrane and the membrane support portion is always kept constant.

さらに、本発明を適用するにあたっては、図示例のように、前記梁１５を設けた貫通孔１４が円形である場合に好適である。貫通孔１４が円形であれば、仕切部材９が変形した場合に、貫通孔１４の孔縁の縮径方向変位が均一になりやすいため、例えば、各窓１６，１７の面積が変形前後で不均一になってしまうことによる防振特性の変化等を効果的に抑制できる。   Furthermore, when the present invention is applied, it is suitable when the through hole 14 provided with the beam 15 is circular as shown in the illustrated example. If the through hole 14 is circular, when the partition member 9 is deformed, the displacement in the diameter reducing direction of the hole edge of the through hole 14 is likely to be uniform. For example, the areas of the windows 16 and 17 are not before and after the deformation. It is possible to effectively suppress a change in the vibration isolation characteristics due to the uniformity.

加えて、本発明の防振装置において、前記貫通孔１４の中心Ｇから前記梁１５の幅方向中心線に引いた垂線の長さｒを、前記梁１５の幅寸法Ｗの２〜５倍の範囲内とすることにより、初期特性と変形防止効果の両立を実現することができる。即ち、長さｒを幅寸法Ｗの５倍以上とした場合、メンブラン１０の中央部を押さえることができなくなって初期特性が悪くなるおそれがあり、一方、長さｒを幅寸法Ｗの２倍以下とした場合、梁１５が撓みにくくなって縮径方向の力を十分に緩和することができなくなることにより、部材変形による装置の特性変化が大きくなるおそれがある。   In addition, in the vibration isolator of the present invention, the length r of the perpendicular drawn from the center G of the through hole 14 to the center line in the width direction of the beam 15 is 2 to 5 times the width dimension W of the beam 15. By making it within the range, it is possible to realize both the initial characteristics and the deformation preventing effect. That is, if the length r is 5 times or more the width dimension W, the center portion of the membrane 10 cannot be pressed and the initial characteristics may be deteriorated. On the other hand, the length r is twice the width dimension W. In the case described below, the beam 15 is difficult to bend, and the force in the diameter reducing direction cannot be sufficiently relaxed, so that there is a possibility that the characteristic change of the apparatus due to member deformation becomes large.

（ａ）は、本発明に従う液封入式防振装置に用いることができる仕切部材をメンブラン支持部側から見た底面図であり、（ｂ）は、上記仕切部材のＡ１−Ａ１線に沿う断面図である。(A) is a bottom view of the partition member from the membrane supporting portion that can be used in the hydraulic antivibration device according to the present invention, (b) is the A 1 -A 1 line of the partition member It is sectional drawing which follows. 液封入式防振装置の実施形態を示す縦断面図である。It is a longitudinal section showing an embodiment of a liquid enclosure type vibration isolator. （ａ）は、本発明に従う液封入防振装置に用いることができる他の仕切り部材をメンブラン支持部側から見た底面図であり、（ｂ）は、上記他の仕切り部材のＡ２−Ａ２線に沿う断面図である。(A) is a bottom view of the other of the partition member which can be used in the liquid filled vibration isolating device according to the present invention from the membrane support part side, (b) is the other partition member A 2 -A It is sectional drawing which follows a 2 line. （ａ）は、本発明に従う液封入防振装置に用いることができるさらに他の仕切り部材をメンブラン支持部側から見た底面図であり、（ｂ）は、上記さらに他の仕切り部材のＡ３−Ａ３線に沿う断面図である。(A) is a bottom view of still saw other partition member from the membrane supporting portion that can be used in the liquid filled vibration isolating device according to the present invention, (b) is, A 3 of the still another partitioning member -A is a cross-sectional view taken along line 3 ; （ａ）〜（ｃ）は、本発明の液封入式防振装置に用いることができる仕切部材の、合成樹脂製の部分に配する貫通孔及び梁の他の形成例を概略的に示す線図である。(A)-(c) is the line which shows roughly the other example of the formation of the through-hole and beam which are arranged in the part made from a synthetic resin of the partition member which can be used for the liquid enclosure type vibration isolator of the present invention FIG. （ａ）は、比較例としての仕切り部材をメンブラン支持部側から見た底面図であり、（ｂ）は、上記比較例としての仕切部材のＡ４−Ａ４線に沿う断面図である。(A) is a bottom view of the partition member as a comparative example from membrane support part side, (b) are a cross-sectional view taken along the A 4 -A 4-wire of the partition member as the comparative example.

以下に、図面を参照しながら本発明を詳細に説明する。
図２に示す実施形態において、液封入式防振装置１は、振動発生側もしくは振動伝達側のいずれか一方側の部材に連結されるコア部材２と、他方側に連結される筒状部材３と、筒状部材３を、一方の端部側でコア部材２の外周面に液密に連結する弾性部材４と、筒状部材３の他方の端部側に液密に取り付けたダイヤフラム５と、ダイヤフラム５の内側に区画される空間内に非圧縮性の液体を封入してなる流体室６と、流体室６をコア部材２側の主液室７とダイヤフラム５側の副液室８とに仕切る仕切部材９とを具える。 Hereinafter, the present invention will be described in detail with reference to the drawings.
In the embodiment shown in FIG. 2, the liquid-filled vibration isolator 1 includes a core member 2 connected to a member on either the vibration generation side or the vibration transmission side, and a cylindrical member 3 connected to the other side. An elastic member 4 that liquid-tightly connects the cylindrical member 3 to the outer peripheral surface of the core member 2 on one end side, and a diaphragm 5 that is liquid-tightly attached to the other end side of the cylindrical member 3; A fluid chamber 6 in which an incompressible liquid is sealed in a space defined inside the diaphragm 5, a fluid chamber 6 comprising a main liquid chamber 7 on the core member 2 side and a sub liquid chamber 8 on the diaphragm 5 side. And a partition member 9 for partitioning.

尚、この仕切部材９は、先に記載した図１の仕切部材９と同一のものである。この仕切部材９は、図示例では、弾性部材４と筒状部材３とによって周囲を締付固定されており、拡径方向への変形を拘束されている。   The partition member 9 is the same as the partition member 9 of FIG. 1 described above. In the illustrated example, the partition member 9 is clamped and fixed around the elastic member 4 and the cylindrical member 3, and is restrained from being deformed in the diameter expansion direction.

ここで、この仕切部材９は、メンブラン支持部１１及び前記メンブラン押さえ１２のいずれか一方、図１及び２に示すところではメンブラン支持部１１の貫通孔１４内に、延在する３本以上の梁１５を設けるととともに、各梁１５を、該貫通孔１４の孔縁から該貫通孔１４の中心Ｇを避けて延在させて、隣接する他の梁１５の中間部に連結することによって前記貫通孔１４を複数の窓１６，１７に区画することが肝要である。
尚、この場合、各梁１５は、両側に隣接する２つの他の梁のいずれに連結させても良い。また、特に限定するものではないが、梁１５の幅Ｗは、１〜３ｍｍ程度が好ましく、厚みｄは、２〜６ｍｍ程度が好ましい。 Here, the partition member 9 includes three or more beams extending in one of the membrane support portion 11 and the membrane retainer 12, or in the through hole 14 of the membrane support portion 11 as shown in FIGS. 15, and each beam 15 extends from the hole edge of the through hole 14 so as to avoid the center G of the through hole 14, and is connected to an intermediate portion of another adjacent beam 15. It is important to partition the hole 14 into a plurality of windows 16 and 17.
In this case, each beam 15 may be connected to any of two other beams adjacent to both sides. Although not particularly limited, the width W of the beam 15 is preferably about 1 to 3 mm, and the thickness d is preferably about 2 to 6 mm.

本発明では、メンブラン支持部１１及びメンブラン押さえ１２の少なくとも一方の貫通孔が上記平面内で湾曲または屈折した梁によって区画されていればいいため、例えば、メンブラン押さえ１２の貫通孔のみを、上記方法にて区画することもでき、さらには、メンブラン支持部１１及びメンブラン押さえ１２の両方の貫通孔を、同様に区画することもできる。   In the present invention, since at least one through-hole of the membrane support portion 11 and the membrane retainer 12 only needs to be partitioned by a curved or refracted beam in the plane, for example, only the through-hole of the membrane retainer 12 is used in the above method. Further, the through holes of both the membrane support portion 11 and the membrane retainer 12 can be similarly partitioned.

また、本発明において、貫通孔１４の形状はどのような形状であってもよく、上記に例証した円形のものの他、例えば、図５（ａ）に示すような四角形等の多角形のもの等にも適用することが可能である。   Further, in the present invention, the shape of the through hole 14 may be any shape, and in addition to the circular shape illustrated above, for example, a polygonal shape such as a quadrangle as shown in FIG. It is also possible to apply to.

さらに、本発明では、貫通孔１４に設ける梁１５の本数は３本以上であればよく、図３に示すもののように３本の梁１５で区画したり、図５（ｃ）に示すもののように５本の梁１５で区画したりすることができる。
その際、梁１５は、図１に示すような直線状とする他に、図４（ａ）に示すもののように、仕切部材２０９の厚み方向に直角な平面内で曲率半径Ｒで湾曲させたり、また、図５（ｂ）に示すもののように、上記平面内で屈折させて設けたりすることができる。 Furthermore, in the present invention, the number of beams 15 provided in the through hole 14 may be three or more, and may be partitioned by three beams 15 as shown in FIG. 3, or as shown in FIG. Or can be partitioned by five beams 15.
At that time, in addition to the beam 15 having a linear shape as shown in FIG. 1, the beam 15 may be curved with a radius of curvature R within a plane perpendicular to the thickness direction of the partition member 209 as shown in FIG. Further, as shown in FIG. 5B, it can be refracted in the plane.

また、その際、貫通孔を上記方法にて区画したメンブラン支持部１１及びメンブラン押さえ１２の少なくとも一方を合成樹脂によって構成すれば、合成樹脂の膨潤による変形も抑制することができる他、加工容易性を得ることが可能である。   At that time, if at least one of the membrane support part 11 and the membrane retainer 12 in which the through holes are partitioned by the above method is made of a synthetic resin, deformation due to the swelling of the synthetic resin can be suppressed, and processability can be improved. It is possible to obtain

図４（ａ）及び（ｂ）に示す仕切部材２０９は、梁１５を湾曲させてある点を除いて、図１の仕切部材９と同一のものである。このように梁１５を湾曲させて設けることによって、さらに、梁１５を所望の方向に撓ませやすくすることができる。   The partition member 209 shown in FIGS. 4A and 4B is the same as the partition member 9 in FIG. 1 except that the beam 15 is curved. By providing the beam 15 in such a curved manner, the beam 15 can be further easily bent in a desired direction.

図１（ａ）及び（ｂ）に示したところに従って、本発明の仕切部材９のモデルを作成した。その際、梁１５の厚みｄ及び幅Ｗを表１に示すように異ならせた２つのモデルを作成し、これを実施例１及び２とした。尚、各梁１５は、貫通孔１４の中心Ｇから各梁１５の幅方向中心線に引いた垂線の長さｒが７．５ｍｍになるよう、貫通孔１４の中心Ｇからずらして設けた。   A model of the partition member 9 of the present invention was created in accordance with the situation shown in FIGS. 1 (a) and 1 (b). At that time, two models having different thicknesses d and widths W of the beam 15 as shown in Table 1 were created. Each beam 15 is provided so as to be shifted from the center G of the through hole 14 so that the length r of the perpendicular drawn from the center G of the through hole 14 to the center line in the width direction of each beam 15 is 7.5 mm.

図６（ａ）及び（ｂ）に示す仕切部材３０９は、直線状に延在して貫通孔１０の中心Ｇで相互に直角に交差する２本の直線的な梁１５によって、該貫通孔１０を相互に合同な４つの窓１６に区画したものである。   The partition member 309 shown in FIGS. 6A and 6B has a through hole 10 formed by two linear beams 15 extending linearly and intersecting each other at the center G of the through hole 10 at right angles. Are partitioned into four windows 16 congruent with each other.

同様に、図６（ａ）及び（ｂ）に示したところに従って、表１に示すように梁１５の厚みｄ及び幅Ｗを異ならせた２つの仕切部材３０９のモデルを作成し、これを従来例１及び２とした。尚、実施例１及び２並びに従来例１及び２のそれぞれについて、貫通孔の直径Ｄをφ４４とした。   Similarly, in accordance with what is shown in FIGS. 6 (a) and 6 (b), models of two partition members 309 having different thicknesses d and widths W of the beam 15 are created as shown in Table 1. Examples 1 and 2 were designated. In each of Examples 1 and 2 and Conventional Examples 1 and 2, the diameter D of the through hole was φ44.

かくして得られた従来例及び実施例の各モデルに対し、メンブラン押さえの形状、大きさ及び仕切部材の最大径の大きさが固定された拘束条件の下で、メンブラン支持部を３％膨張させた場合の、メンブランとメンブラン押さえとの間の距離ｘの変化の最大量を測定し、従来例１を１００として指数化した。表１にその結果を示す。   For each model of the conventional example and the example obtained in this way, the membrane support portion was expanded by 3% under the constraint conditions in which the shape and size of the membrane presser and the maximum diameter of the partition member were fixed. In this case, the maximum amount of change in the distance x between the membrane and the membrane holder was measured, and the conventional example 1 was indexed as 100. Table 1 shows the results.

Figure 2011122668
Figure 2011122668

表１に示すように、梁の厚みｄ及び幅Ｗが同一の場合、本発明による実施例１及び２は、従来例１及び２よりもメンブラン‐メンブラン押さえ間の距離変化の最大量が小さいことがわかる。また、実施例１と実施例２の結果を比較すれば、梁の厚みｄを梁の幅Ｗに対してＷ＜ｄとすることにより、さらにこの距離変化の最大量を小さくできることがわかる。   As shown in Table 1, when the thickness d and the width W of the beam are the same, Examples 1 and 2 according to the present invention have a smaller maximum amount of distance change between the membrane and the membrane presser than the conventional examples 1 and 2. I understand. Further, comparing the results of Example 1 and Example 2, it can be seen that the maximum amount of this distance change can be further reduced by setting the beam thickness d to W <d with respect to the beam width W.

上記結果より、本発明の液封入式防振装置は、仕切部材がカシメ等の外力を受けることによる仕切部材の構成部分の変位や、材料の膨潤による変位を効果的に抑制するものであると言える。   From the above results, the liquid-filled vibration isolator of the present invention effectively suppresses displacement of the component parts of the partition member due to external force such as caulking, and displacement due to swelling of the material. I can say that.

１ 防振装置
２ コア部材
３ 筒状部材
４ 弾性部材
５ ダイヤフラム
６ 流体室
７ 主液室
８ 副液室
９ 仕切部材
１０ メンブラン
１１ メンブラン支持部
１２ メンブラン押さえ
１３ 制限通路
１４ 貫通孔
１５ 梁
１６ 外側窓
１７ 中央窓
１０９ 仕切部材
２０９ 仕切部材
３０９ 仕切部材
Ｄ 貫通孔の直径
Ｒ 梁の曲率半径
Ｗ 梁の幅
ｄ 梁の厚み
δθ 撓み
Ｇ 貫通孔の中心 DESCRIPTION OF SYMBOLS 1 Vibration isolator 2 Core member 3 Cylindrical member 4 Elastic member 5 Diaphragm 6 Fluid chamber 7 Main liquid chamber 8 Sub liquid chamber 9 Partition member 10 Membrane 11 Membrane support part 12 Membrane pressing part 13 Restriction channel 14 Through-hole 15 Beam 16 Outer window 17 Central window 109 Partition member 209 Partition member 309 Partition member D Diameter of through hole R Radius of curvature W Beam width d Beam thickness δ θ Deflection G Center of through hole

Claims (7)

振動発生側もしくは振動伝達側のいずれか一方側に連結されるコア部材と、他方側に連結される筒状部材と、該筒状部材を、一方の端部側で前記コア部材の外周面に液密に連結する弾性部材と、前記筒状部材の他方の端部側に液密に取り付けたダイヤフラムと、該ダイヤフラムの内側に区画される空間内に非圧縮性の液体を封入してなる流体室と、該流体室を前記コア部材側の主液室と、前記ダイヤフラム側の副液室とに仕切る仕切部材とを具え、
前記仕切部材が、メンブランと、該メンブランを支持するメンブラン支持部と、該メンブラン支持部とともに前記メンブランの変形量もしくは変位量を制限するメンブラン押さえと、前記主液室と副液室との連通をもたらす制限通路とを有するとともに、前記メンブラン支持部及び前記メンブラン押さえのそれぞれが、前記主及び副液室の方向に貫通する貫通孔を有する液封入式防振装置であって、
前記メンブラン支持部及び前記メンブラン押さえの少なくとも一方の前記貫通孔内に延在する３本以上の梁を設けるとともに、各梁を、該貫通孔の孔縁から該貫通孔の中心を避けて延在させて、隣接する他の梁の中間部に連結することによって前記貫通孔を複数の窓に区画してなることを特徴とする液封入式防振装置。 A core member connected to either the vibration generation side or the vibration transmission side, a cylindrical member connected to the other side, and the cylindrical member on the outer peripheral surface of the core member on one end side An elastic member that is liquid-tightly connected, a diaphragm that is liquid-tightly attached to the other end of the cylindrical member, and a fluid that is formed by enclosing an incompressible liquid in a space defined inside the diaphragm A partition member that partitions the chamber into a main liquid chamber on the core member side and a sub liquid chamber on the diaphragm side,
The partition member communicates the membrane, a membrane support portion that supports the membrane, a membrane retainer that restricts deformation or displacement of the membrane together with the membrane support portion, and communication between the main liquid chamber and the auxiliary liquid chamber. Each of the membrane support part and the membrane presser has a through-hole penetrating in the direction of the main and sub liquid chambers,
Three or more beams extending into the through hole of at least one of the membrane support part and the membrane pressing member are provided, and each beam extends from the hole edge of the through hole so as to avoid the center of the through hole. Then, the liquid filled type vibration damping device is characterized in that the through hole is divided into a plurality of windows by being connected to an intermediate portion of another adjacent beam. 前記梁を設けた貫通孔を有する前記メンブラン支持部及び前記メンブラン押さえの少なくとも一方を、合成樹脂によって構成する請求項１に記載の液封入式防振装置。   2. The liquid-filled vibration isolator according to claim 1, wherein at least one of the membrane support portion having the through hole provided with the beam and the membrane retainer is made of a synthetic resin. 前記梁の厚み寸法ｄを該梁の幅寸法Ｗよりも大きくしてなる請求項１または２に記載の液封入式防振装置。   The liquid-filled vibration isolator according to claim 1 or 2, wherein a thickness d of the beam is larger than a width W of the beam. 前記梁によって区画される複数の窓の配置が、前記仕切部材の厚み方向と直角な平面内で回転対称である請求項１〜３のいずれかに記載の液封入式防振装置。   The liquid-filled vibration isolator according to any one of claims 1 to 3, wherein the arrangement of the plurality of windows defined by the beams is rotationally symmetric within a plane perpendicular to the thickness direction of the partition member. 前記梁が、前記仕切部材の厚み方向と直角な平面内で湾曲または屈折した形状を有する請求項１〜４のいずれかに記載の液封入式防振装置。   The liquid-filled vibration isolator according to claim 1, wherein the beam has a curved or refracted shape in a plane perpendicular to the thickness direction of the partition member. 前記梁を設けた貫通孔が円形である請求項１〜５のいずれかに記載の液封入式防振装置。   The liquid filled type vibration damping device according to claim 1, wherein the through hole provided with the beam is circular. 前記貫通孔の中心から前記梁の幅方向中心線に引いた垂線の長さが、前記梁の幅寸法Ｗの２〜５倍の範囲である請求項１〜６のいずれかに記載の液封入式防振装置。   The liquid sealing according to any one of claims 1 to 6, wherein a length of a perpendicular drawn from a center of the through hole to a center line in a width direction of the beam is in a range of 2 to 5 times a width dimension W of the beam. Type vibration isolator.
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PCT/JP2010/006059 WO2011070700A1 (en) 2009-12-10 2010-10-12 Liquid enclosed vibration-proofing device
US13/514,785 US9046147B2 (en) 2009-12-10 2010-10-12 Liquid-filled vibration isolating device
CN201080062103.0A CN102713341B (en) 2009-12-10 2010-10-12 Liquid enclosed vibration-proofing device
EP10835631.2A EP2511565B1 (en) 2009-12-10 2010-10-12 Liquid enclosed vibration-proofing device
IN5188DEN2012 IN2012DN05188A (en) 2009-12-10 2012-06-12
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JP2008196704A (en) * 2008-04-01 2008-08-28 Toyo Tire & Rubber Co Ltd Fluid-sealed vibration isolating device

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Publication number Priority date Publication date Assignee Title
JP2015503712A (en) * 2012-10-08 2015-02-02 ベイジンウェスト・インダストリーズ・カンパニー・リミテッドＢｅｉｊｉｎｇｗｅｓｔ Ｉｎｄｕｓｔｒｉｅｓ Ｃｏ．， Ｌｔｄ． Fluid damper assembly having a gas cup lubrication chamber
US9353821B2 (en) 2012-10-08 2016-05-31 Beijingwest Industries Co., Ltd. Fluid damper assembly with gas cup lubrication chamber

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