JP2014219019A - Vibration-proofing device - Google Patents

Vibration-proofing device Download PDF

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JP2014219019A
JP2014219019A JP2013096430A JP2013096430A JP2014219019A JP 2014219019 A JP2014219019 A JP 2014219019A JP 2013096430 A JP2013096430 A JP 2013096430A JP 2013096430 A JP2013096430 A JP 2013096430A JP 2014219019 A JP2014219019 A JP 2014219019A
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liquid chamber
vibration
orifice
partition member
chamber
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JP6116343B2 (en
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基宏 ▲柳▼田
基宏 ▲柳▼田
Motohiro Yanagida
植木 哲
Satoru Ueki
哲 植木
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Bridgestone Corp
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Bridgestone Corp
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16FSPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F13/00Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs

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  • Combined Devices Of Dampers And Springs (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a vibration-proofing device having a simple constitution for attenuating and absorbing a plurality of kinds of input vibrations having frequencies different from each other.SOLUTION: A partition member 16 accommodates an elastic plate 24 displaceably or deformably, and has a storage chamber 32 formed to communicate with a main liquid chamber 14. Between a bottom wall face of the wall face defining the storage chamber 32 on the side of an auxiliary liquid chamber 15 and a back face of the outer surface of the elastic plate 24 on the side of the auxiliary liquid chamber 15, there is formed a communication passage 51, through which a liquid can pass. In the partition member 16, there is formed a communication hole 52 which makes the communication passage 51 and the auxiliary liquid chamber 15 communicate with each other and which has a lower communication resistance of the liquid than the communication passage 51.

Description

本発明は、例えば自動車等に適用され、エンジン等の振動発生部の振動を減衰吸収する防振装置に関するものである。   The present invention relates to a vibration isolator that is applied to, for example, an automobile and absorbs and absorbs vibrations of a vibration generating unit such as an engine.

従来から、例えば下記特許文献1に示されるように、仕切り部材に、主液室と副液室とを連通し、シェイク振動の入力に対して液柱共振を生じさせるシェイクオリフィスと、弁部材が変位自在若しくは変形自在に収容された収容室と、収容室と主液室とを連通する連通孔と、収容室と副液室とを連通し、アイドル振動の入力に対して液柱共振を生じさせるアイドルオリフィスと、が形成された構成が知られている。
そして、この防振装置では、シェイク振動が入力されると、弁部材によりアイドルオリフィスの収容室内に向けた開口が閉塞され、アイドル振動が入力されると、アイドルオリフィスの収容室内に向けた開口が開放される。
Conventionally, for example, as shown in Patent Document 1 below, a partition member is connected to a main liquid chamber and a sub liquid chamber, and a shake orifice that causes liquid column resonance in response to an input of shake vibration, and a valve member have been provided. The storage chamber accommodated in a freely displaceable or deformable manner, the communication hole that connects the storage chamber and the main liquid chamber, and the storage chamber and the sub liquid chamber communicate with each other to generate liquid column resonance with respect to the input of idle vibration. A configuration in which an idle orifice is formed is known.
In this vibration isolator, when the shake vibration is input, the valve member closes the opening of the idle orifice toward the accommodation chamber, and when the idle vibration is input, the opening of the idle orifice toward the accommodation chamber is closed. Opened.

特開2009−243510号公報JP 2009-243510 A

しかしながら、前記従来の防振装置では、簡易な構成で、周波数が互いに異なる複数種の入力振動を減衰吸収することについて改善の余地があった。   However, the conventional vibration isolator has room for improvement with respect to attenuating and absorbing plural types of input vibrations having different frequencies with a simple configuration.

この発明は、このような事情を考慮してなされたもので、簡易な構成で、周波数が互いに異なる複数種の入力振動を減衰吸収することができる防振装置を提供することを目的とする。   The present invention has been made in view of such circumstances, and an object thereof is to provide a vibration isolator capable of absorbing and absorbing plural types of input vibrations having different frequencies with a simple configuration.

上記課題を解決して、このような目的を達成するために、本発明の防振装置は、 振動発生部及び振動受部のうちのいずれか一方に連結される筒状の第1取付部材、及び他方に連結される第2取付部材と、これらの両取付部材同士を互いに連結する弾性体と、液体が封入される前記第1取付部材内の液室を、前記弾性体を壁面の一部に有する主液室、及び副液室に仕切る仕切り部材と、を備え、前記仕切り部材には、弾性板が変位自在若しくは変形自在に収容されるとともに、前記主液室に連通する収容室が形成され、前記収容室を画成する壁面のうちの前記副液室側の底壁面と、前記弾性板の外表面のうちの前記副液室側の裏面と、の間に、液体が流通可能な流通路が形成され、前記仕切り部材には、前記流通路と前記副液室とを連通し、かつ前記流通路より液体の流通抵抗が低い連通孔が形成されていることを特徴とする。   In order to solve the above problems and achieve such an object, the vibration isolator of the present invention includes a cylindrical first mounting member coupled to one of a vibration generating unit and a vibration receiving unit, And a second mounting member connected to the other, an elastic body connecting the two mounting members to each other, a liquid chamber in the first mounting member in which liquid is sealed, and the elastic body as a part of the wall surface. A partition member for partitioning into a main liquid chamber and a sub liquid chamber, and an elastic plate is housed in the partition member in a displaceable or deformable manner, and a housing chamber communicating with the main liquid chamber is formed in the partition member The liquid can flow between the bottom wall surface on the secondary liquid chamber side of the wall surface defining the storage chamber and the back surface on the secondary liquid chamber side of the outer surface of the elastic plate. A flow path is formed, and the partition member communicates the flow path and the auxiliary liquid chamber; Characterized in that One the flow resistance is low passage of liquid from the flow passage is formed.

この発明によれば、振動が入力されると、弾性板が振動することで、流通路及び連通孔の双方を液体が流通して液柱共振を生じさせ、この振動が減衰吸収され、入力される振動の周波数がさらに高くなると、流通路及び連通孔のうち、液体の流通抵抗が比較的高い流通路のみで目詰まりが生じ、連通孔と副液室との間では液体が流通して液柱共振が生じ、この振動が減衰吸収される。
このように、周波数の比較的低い振動の入力時には目詰まりが生じず、かつ周波数の比較的高い振動の入力時に目詰まりが生じる流通路と、流通路に連通し、かつ周波数が多少変動しても目詰まりが生じない連通孔と、が仕切り部材に形成されているだけの簡易な構成で、周波数が互いに異なる複数種の入力振動を減衰吸収することが可能になり、このような作用を奏する防振装置の低コスト化を図ることができる。
According to the present invention, when vibration is input, the elastic plate vibrates, so that liquid flows through both the flow path and the communication hole to cause liquid column resonance, and this vibration is attenuated and absorbed and input. When the frequency of the vibration is further increased, clogging occurs only in the flow passage and the communication hole having a relatively high flow resistance of the liquid, and the liquid flows between the communication hole and the sub liquid chamber. Column resonance occurs, and this vibration is attenuated and absorbed.
In this way, clogging does not occur when a vibration with a relatively low frequency is input, and clogging occurs when a vibration with a relatively high frequency is input. With a simple configuration in which the communication hole that is not clogged and the partition member is simply formed, it is possible to attenuate and absorb a plurality of types of input vibrations having different frequencies, and this effect is obtained. Cost reduction of the vibration isolator can be achieved.

ここで、前記流通路は平面視環状に形成されてもよい。
この場合、流通路が平面視環状に形成されているので、仕切り部材のかさ張りを抑えつつ流通路の長さを容易に長く確保することができる。
Here, the flow passage may be formed in an annular shape in plan view.
In this case, since the flow passage is formed in an annular shape in plan view, the length of the flow passage can be easily ensured long while suppressing the bulkiness of the partition member.

また、前記収容室の底壁面、及び前記弾性板の裏面のうちの少なくとも一方には、他方に向けて突出して当接する内環状突部と、前記内環状突部を径方向の外側から囲繞する外環状突部と、が配設され、これらの環状突部同士の間が前記流通路となってもよい。
この場合、前述の作用効果を有する防振装置を容易かつ確実に形成することができる。
In addition, at least one of the bottom wall surface of the storage chamber and the back surface of the elastic plate protrudes toward and comes into contact with the other, and the inner annular projection is surrounded from the outside in the radial direction. An outer annular protrusion may be disposed, and a space between the annular protrusions may be the flow passage.
In this case, it is possible to easily and surely form a vibration isolator having the above-described effects.

さらに、前記仕切り部材に、前記主液室と前記副液室とを連通し、シェイク振動の入力に対して液柱共振を生じさせる第1オリフィスと、前記主液室と前記副液室とを連通し、アイドル振動の入力に対して液柱共振を生じさせる第2オリフィスと、が形成され、前記第2オリフィスは、前記第1取付部材の軸線方向に沿って延在し、前記第1オリフィスは、前記仕切り部材の外周部に形成され、前記収容室、前記流通路、及び前記連通孔は、前記仕切り部材において、前記軸線に直交する径方向に沿う前記第2オリフィスと前記第1オリフィスとの間に位置する部分に形成されてもよい。
この場合、収容室、流通路、及び連通孔のみならず、第1オリフィス及び第2オリフィスを備えているので、幅広い周波数帯にわたる振動を減衰吸収することができる。
また、収容室、流通路、及び連通孔が、仕切り部材において、径方向に沿う第2オリフィスと第1オリフィスとの間に位置する部分に形成されているので、防振装置全体のかさ張りを抑えることができる。
Furthermore, the first orifice that causes the partition member to communicate the main liquid chamber and the sub liquid chamber, and causes liquid column resonance in response to an input of shake vibration, and the main liquid chamber and the sub liquid chamber And a second orifice that forms a liquid column resonance with respect to an input of idle vibration, and the second orifice extends along an axial direction of the first mounting member, and the first orifice Is formed in the outer peripheral portion of the partition member, and the storage chamber, the flow passage, and the communication hole are formed in the partition member, the second orifice and the first orifice along a radial direction perpendicular to the axis. It may be formed in a portion located between the two.
In this case, since the first orifice and the second orifice are provided in addition to the storage chamber, the flow passage, and the communication hole, vibrations over a wide frequency band can be damped and absorbed.
In addition, since the storage chamber, the flow passage, and the communication hole are formed in a portion of the partition member positioned between the second orifice and the first orifice along the radial direction, the bulk of the vibration isolator is suppressed. be able to.

この発明によれば、簡易な構成で、周波数が互いに異なる複数種の入力振動を減衰吸収することができる。   According to the present invention, it is possible to attenuate and absorb a plurality of types of input vibrations having different frequencies with a simple configuration.

本発明に係る一実施形態において、防振装置の縦断面図である。In one Embodiment which concerns on this invention, it is a longitudinal cross-sectional view of a vibration isolator. 図1に示す仕切り部材の分解斜視図である。It is a disassembled perspective view of the partition member shown in FIG. 図1及び図2に示す仕切り部材本体を主液室側から見た斜視図である。It is the perspective view which looked at the partition member main body shown in FIG.1 and FIG.2 from the main liquid chamber side. 図1から図3に示す仕切り部材本体を副液室側から見た斜視図である。It is the perspective view which looked at the partition member main body shown in FIGS. 1-3 from the subliquid chamber side.

以下、本発明に係る防振装置の一実施形態を、図1から図4を参照しながら説明する。
この防振装置1は、図1に示すように、振動発生部及び振動受部のうちのいずれか一方に連結される筒状の第1取付部材11、及び他方に連結される第2取付部材12と、これらの両取付部材11、12同士を互いに連結する弾性体13と、液体が封入される第1取付部材11内の液室を、弾性体13を壁面の一部に有する主液室14、及び副液室15に仕切る仕切り部材16と、を備えている。
図示の例では、第2取付部材12は柱状に形成されるとともに、弾性体13は筒状に形成され、第1取付部材11、第2取付部材12及び弾性体13は、共通軸と同軸に配設されている。以下、この共通軸を軸線Oといい、軸線O方向に沿う主液室14側を一方側といい、副液室15側を他方側といい、軸線Oに直交する方向を径方向といい、軸線O回りに周回する方向を周方向という。
Hereinafter, an embodiment of a vibration isolator according to the present invention will be described with reference to FIGS. 1 to 4.
As shown in FIG. 1, the vibration isolator 1 includes a cylindrical first mounting member 11 connected to one of a vibration generating unit and a vibration receiving unit, and a second mounting member connected to the other. 12, an elastic body 13 that couples the two attachment members 11, 12 to each other, a liquid chamber in the first attachment member 11 in which a liquid is sealed, and a main liquid chamber having the elastic body 13 as a part of the wall surface. 14, and a partition member 16 that partitions the sub liquid chamber 15.
In the illustrated example, the second mounting member 12 is formed in a column shape, the elastic body 13 is formed in a cylindrical shape, and the first mounting member 11, the second mounting member 12, and the elastic body 13 are coaxial with the common axis. It is arranged. Hereinafter, the common axis is referred to as an axis O, the main liquid chamber 14 side along the axis O direction is referred to as one side, the sub liquid chamber 15 side is referred to as the other side, and the direction orthogonal to the axis O is referred to as the radial direction. A direction around the axis O is referred to as a circumferential direction.

なお、この防振装置1が例えば自動車に装着された場合には、第2取付部材12が振動発生部としてのエンジンに連結される一方、第1取付部材11が図示しないブラケットを介して振動受部としての車体に連結されることにより、エンジンの振動が車体に伝達するのを抑える。
第1取付部材11の液室には、例えばエチレングリコール、水、シリコーンオイル等が封入される。
When the vibration isolator 1 is mounted on an automobile, for example, the second mounting member 12 is connected to an engine as a vibration generating unit, while the first mounting member 11 receives vibrations via a bracket (not shown). By being connected to the vehicle body as a part, vibration of the engine is prevented from being transmitted to the vehicle body.
For example, ethylene glycol, water, silicone oil, or the like is sealed in the liquid chamber of the first mounting member 11.

第1取付部材11における一方側の端部に弾性体13が液密状態で連結されていて、弾性体13により第1取付部材11の一方側の開口部が閉塞されている。第1取付部材11において、弾性体13が連結された部分に対して他方側から連なる部分に、全周にわたって連続して延びる環状溝11aが形成されている。
第1取付部材11における他方側の端部には、全周にわたって連続して延び、かつ径方向の外側に向けて膨出する管状部11bが形成されている。管状部11bは、径方向の内側に向けて開口している。管状部11bは、前記軸線O方向に沿う縦断面視で矩形状を呈している。
The elastic body 13 is connected in a liquid-tight state to one end of the first mounting member 11, and the opening on the one side of the first mounting member 11 is closed by the elastic body 13. In the first mounting member 11, an annular groove 11 a extending continuously over the entire circumference is formed in a portion that is continuous from the other side with respect to the portion to which the elastic body 13 is connected.
At the other end of the first attachment member 11, a tubular portion 11 b is formed that continuously extends over the entire circumference and bulges outward in the radial direction. The tubular portion 11b opens toward the inner side in the radial direction. The tubular portion 11b has a rectangular shape in a longitudinal sectional view along the axis O direction.

第1取付部材11の管状部11b内に、ダイヤフラムリング18が液密状態で装着されている。ダイヤフラムリング18には、ダイヤフラム17が固着されており、このダイヤフラム17により第1取付部材11の他方側の開口部が閉塞されている。ダイヤフラム17のうち、径方向の中央部17aは他の部分より厚肉に形成されている。ダイヤフラム17の中央部17aにおける外周縁部には、一方側に向けて突出する環状突部が全周にわたって形成されている。ダイヤフラム17と仕切り部材16とで囲まれた空間が副液室15となっている。   A diaphragm ring 18 is mounted in a liquid-tight state in the tubular portion 11 b of the first mounting member 11. A diaphragm 17 is fixed to the diaphragm ring 18, and the opening on the other side of the first mounting member 11 is closed by the diaphragm 17. Of the diaphragm 17, the central portion 17a in the radial direction is formed thicker than other portions. At the outer peripheral edge of the central portion 17a of the diaphragm 17, an annular protrusion that protrudes toward one side is formed over the entire circumference. A space surrounded by the diaphragm 17 and the partition member 16 is a sub liquid chamber 15.

第2取付部材12における一方側の端面には、軸線Oと同軸に雌ねじ部12aが形成されている。第2取付部材12は、第1取付部材11から一方側に突出している。第2取付部材12には、径方向の外側に向けて突出し、かつ全周にわたって連続して延びるフランジ部12bが形成されている。フランジ部12bは、第1取付部材11における一方側の端縁から一方側に離れている。   An internal thread portion 12 a is formed coaxially with the axis O on the one end face of the second mounting member 12. The second mounting member 12 protrudes from the first mounting member 11 to one side. The second mounting member 12 is formed with a flange portion 12b that protrudes radially outward and continuously extends over the entire circumference. The flange portion 12 b is separated from one end of the first mounting member 11 to one side.

弾性体13は、弾性変形可能な例えばゴム材料等で形成され、一方側から他方側に向かうに従い漸次拡径された筒状に形成されている。弾性体13のうち、一方側の端部が、第2取付部材12に連結され、他方側の端部が、第1取付部材11に連結されている。なお、第1取付部材11の内周面は、弾性体13と一体に形成されたゴム膜により、全域にわたって覆われている。
第1取付部材11の内部において、仕切り部材16と弾性体13との間に位置する部分に、弾性体13の他方側に向けた過度の変形を規制する内部ストッパ54が配設されている。内部ストッパ54は筒状に形成され、その内側に仕切り部材16が配設されている。内部ストッパ54における一方側の端部は、径方向の内側に向けて折り返されている。内部ストッパ54のうち、仕切り部材16より一方側に位置する部分には、貫通孔が周方向に間隔をあけて複数形成されている。なお、内部ストッパ54及びダイヤフラムリング18は一体に形成されている。
The elastic body 13 is formed of, for example, a rubber material that can be elastically deformed, and is formed in a cylindrical shape that gradually increases in diameter from one side to the other side. One end of the elastic body 13 is connected to the second mounting member 12, and the other end is connected to the first mounting member 11. The inner peripheral surface of the first mounting member 11 is covered over the entire area by a rubber film formed integrally with the elastic body 13.
Inside the first mounting member 11, an internal stopper 54 that restricts excessive deformation toward the other side of the elastic body 13 is disposed in a portion located between the partition member 16 and the elastic body 13. The internal stopper 54 is formed in a cylindrical shape, and the partition member 16 is disposed inside thereof. One end of the internal stopper 54 is folded back inward in the radial direction. A plurality of through holes are formed at intervals in the circumferential direction in a portion of the internal stopper 54 located on one side of the partition member 16. The internal stopper 54 and the diaphragm ring 18 are integrally formed.

仕切り部材16には、主液室14と副液室15とを連通し、シェイク振動の入力に対して液柱共振を生じさせる第1オリフィス21と、主液室14と副液室15とを連通し、アイドル振動の入力に対して液柱共振を生じさせる第2オリフィス22と、主液室14と副液室15とを連通し、シェイク振動より高い周波数の振動の入力に対して液柱共振を生じさせる第3オリフィス23と、が形成されるとともに、第3オリフィス23における主液室14側の開口を閉塞する弾性板24が備えられている。
第3オリフィス23における主液室14側の開口部には、弾性板24が変位自在若しくは変形自在に収容される収容室32が形成されている。図示の例では、第3オリフィス23の主液室14側の開口が、全域にわたって1つの弾性板24により一体に覆われている。
The partition member 16 communicates with the main liquid chamber 14 and the sub liquid chamber 15, and includes a first orifice 21 that causes liquid column resonance in response to shake vibration input, and the main liquid chamber 14 and the sub liquid chamber 15. The second orifice 22 that causes liquid column resonance with respect to the input of idle vibration, the main liquid chamber 14 and the sub liquid chamber 15 communicate with each other, and the liquid column with respect to the input of vibration having a frequency higher than the shake vibration. A third orifice 23 that causes resonance is formed, and an elastic plate 24 that closes the opening of the third orifice 23 on the main liquid chamber 14 side is provided.
An accommodation chamber 32 in which the elastic plate 24 is accommodated in a displaceable or deformable manner is formed in the opening of the third orifice 23 on the main liquid chamber 14 side. In the illustrated example, the opening on the main liquid chamber 14 side of the third orifice 23 is integrally covered with one elastic plate 24 over the entire area.

第1オリフィス21の液柱共振周波数は、シェイク振動の周波数(例えば、10Hz〜15Hz程度)にチューニングされている。第2オリフィス22の液柱共振周波数は、アイドル振動の周波数(例えば、30Hz〜60Hz程度)にチューニングされている。
第2オリフィス22及び第3オリフィス23それぞれの流通抵抗は、第1オリフィス21の流通抵抗より低くなっている。本実施形態では、第3オリフィス23は、アイドル振動の周波数以上の周波数(例えば、80Hz〜100Hz程度)の振動にチューニングされていて、その流通抵抗は、第2オリフィス22の流通抵抗の大きさ以下となっている。
The liquid column resonance frequency of the first orifice 21 is tuned to a shake vibration frequency (for example, about 10 Hz to 15 Hz). The liquid column resonance frequency of the second orifice 22 is tuned to an idle vibration frequency (for example, about 30 Hz to 60 Hz).
The flow resistance of each of the second orifice 22 and the third orifice 23 is lower than the flow resistance of the first orifice 21. In the present embodiment, the third orifice 23 is tuned to vibration having a frequency equal to or higher than the frequency of idle vibration (for example, about 80 Hz to 100 Hz), and the flow resistance is less than the flow resistance of the second orifice 22. It has become.

以下、具体的に説明する。
仕切り部材16は、第1オリフィス21、及び第2オリフィス22が形成された仕切り部材本体25と、仕切り部材本体25における一方側の表面上に配置され仕切り部材本体25との間に収容室32を画成する蓋板26と、を備えている。なお、仕切り部材本体25の外径と、蓋板26の外径と、は互いに同等になっている。
仕切り部材本体25は、内筒部27と、内筒部27を径方向の外側から囲う外筒部28と、内筒部27及び外筒部28それぞれの他方側の端部同士を連結する環板部29と、内筒部27の一方側の端部に連結されこの内筒部27の一方側の開口部を閉塞する主面部30と、を備えている。
これらの内筒部27、外筒部28、環板部29及び主面部30は全体が一体に形成されている。また、主面部30の表裏面は前記軸線Oに直交している。図示の例では、内筒部27、外筒部28、環板部29及び主面部30は、前記軸線Oと同軸に配設されている。
This will be specifically described below.
The partition member 16 is disposed on the surface of one side of the partition member main body 25 in which the first orifice 21 and the second orifice 22 are formed, and between the partition member main body 25 and the storage chamber 32. And a lid plate 26 to be defined. The outer diameter of the partition member main body 25 and the outer diameter of the lid plate 26 are equal to each other.
The partition member main body 25 includes an inner cylinder part 27, an outer cylinder part 28 that surrounds the inner cylinder part 27 from the outside in the radial direction, and a ring that connects the other end parts of the inner cylinder part 27 and the outer cylinder part 28 to each other. A plate portion 29 and a main surface portion 30 which is connected to an end portion on one side of the inner cylinder portion 27 and closes an opening portion on one side of the inner cylinder portion 27 are provided.
The inner cylinder part 27, the outer cylinder part 28, the ring plate part 29 and the main surface part 30 are formed integrally as a whole. Further, the front and back surfaces of the main surface portion 30 are orthogonal to the axis O. In the illustrated example, the inner cylinder part 27, the outer cylinder part 28, the ring plate part 29, and the main surface part 30 are arranged coaxially with the axis O.

第1オリフィス21は、仕切り部材16の外周部に位置する、内筒部27と外筒部28と環板部29とで囲まれた環状空間となっている。第1オリフィス21内には、図2及び図3に示されるように、環状空間の全周にわたる延在を分断する分断壁21aが配設されている。環板部29には、分断壁21aから周方向にずれた位置に、第1オリフィス21と副液室15とを連通する副液室側開口41が形成されている。蓋板26には、分断壁21a及び副液室側開口41の双方から周方向にずれた位置に、図1及び図2に示されるように、第1オリフィス21と主液室14とを連通する主液室側開口42が形成されている。副液室側開口41及び主液室側開口42は、分断壁21aに周方向の両側から各別に隣接している。
第2オリフィス22は、仕切り部材本体25の主面部30を前記軸線O方向に貫いており、前記軸線O方向に延在している。図示の例では、第2オリフィス22は、前記軸線Oと同軸に位置している。蓋板26及び弾性板24は環状に形成され、それぞれの内側の開口26a、24aを通して、第2オリフィス22と主液室14とが連通している。
The first orifice 21 is an annular space surrounded by the inner cylinder part 27, the outer cylinder part 28, and the annular plate part 29, which is located on the outer peripheral part of the partition member 16. As shown in FIGS. 2 and 3, a dividing wall 21 a that divides the extension of the entire circumference of the annular space is disposed in the first orifice 21. The annular plate portion 29 is formed with a sub liquid chamber side opening 41 that allows the first orifice 21 and the sub liquid chamber 15 to communicate with each other at a position shifted in the circumferential direction from the dividing wall 21a. As shown in FIGS. 1 and 2, the first orifice 21 and the main liquid chamber 14 are communicated with the cover plate 26 at a position shifted in the circumferential direction from both the dividing wall 21 a and the auxiliary liquid chamber side opening 41. A main liquid chamber side opening 42 is formed. The sub liquid chamber side opening 41 and the main liquid chamber side opening 42 are adjacent to the dividing wall 21a from both sides in the circumferential direction.
The second orifice 22 passes through the main surface portion 30 of the partition member main body 25 in the direction of the axis O, and extends in the direction of the axis O. In the illustrated example, the second orifice 22 is positioned coaxially with the axis O. The lid plate 26 and the elastic plate 24 are formed in an annular shape, and the second orifice 22 and the main liquid chamber 14 communicate with each other through the respective inner openings 26a, 24a.

収容室32は、主面部30における一方側の表面と、蓋板26における他方側の裏面と、の間の前記軸線O方向の隙間となっている。これにより、収容室32を画成する壁面のうちの他方側の底壁面が、主面部30における一方側の表面とされ、収容室32を画成する壁面のうちの一方側の天壁面が、蓋板26における他方側の裏面となっている。
本実施形態では、図2及び図3に示されるように、主面部30における一方側の表面に、一方側に向けて突出し、弾性板24の外表面のうち他方側の裏面に当接する第1内環状突部30aと、一方側に向けて突出し弾性板24における他方側の裏面に当接し、かつ第1内環状突部30aを径方向の外側から囲繞する第1外環状突部27aと、が配設されている。図示の例では、第1内環状突部30aは、主面部30における一方側の表面の第2オリフィス22の開口周縁部に配設され、第1外環状突部27aは、主面部30における一方側の表面の外周縁部に配設されている。また、第1内環状突部30a及び第1外環状突部27aはそれぞれ、全周にわたって連続して延在している。
The storage chamber 32 is a gap in the direction of the axis O between the surface on one side of the main surface portion 30 and the back surface on the other side of the cover plate 26. As a result, the bottom wall surface on the other side of the wall surfaces defining the storage chamber 32 is the one surface of the main surface portion 30, and the top wall surface on one side of the wall surfaces defining the storage chamber 32 is This is the back surface on the other side of the lid plate 26.
In the present embodiment, as shown in FIGS. 2 and 3, the first surface of the main surface portion 30 protrudes toward one side and contacts the back surface of the other side of the outer surface of the elastic plate 24. An inner annular protrusion 30a, a first outer annular protrusion 27a that protrudes toward one side, abuts against the back surface on the other side of the elastic plate 24, and surrounds the first inner annular protrusion 30a from the outside in the radial direction; Is arranged. In the illustrated example, the first inner annular protrusion 30 a is disposed at the opening peripheral edge of the second orifice 22 on one surface of the main surface portion 30, and the first outer annular protrusion 27 a is one of the main surface portions 30. It is arrange | positioned at the outer-periphery edge part of the surface of the side. The first inner annular protrusion 30a and the first outer annular protrusion 27a each extend continuously over the entire circumference.

これらの第1外環状突部27a及び第1内環状突部30aそれぞれの一方側の端縁により、図1に示されるように、弾性板24における他方側の裏面が支持されることによって、弾性板24と主面部30との間において、第1外環状突部27aと第1内環状突部30aとの間に位置する部分に、前記軸線O方向の隙間(以下、流通路という)51が前記軸線O回りに沿う全周にわたって形成されている。これにより、仕切り部材16に、液体が流通可能な平面視環状の流通路51が形成される。   As shown in FIG. 1, the back surface on the other side of the elastic plate 24 is supported by the edge of one side of each of the first outer annular protrusion 27a and the first inner annular protrusion 30a, thereby providing elasticity. Between the plate 24 and the main surface portion 30, a gap (hereinafter referred to as a flow passage) 51 in the direction of the axis O is formed in a portion located between the first outer annular protrusion 27a and the first inner annular protrusion 30a. It is formed over the entire circumference along the axis O. As a result, an annular flow passage 51 in which the liquid can flow is formed in the partition member 16.

主面部30には、流通路51と副液室15とを連通し、かつ流通路51より液体の流通抵抗が低い連通孔52が形成されている。連通孔52は、主面部30を前記軸線O方向に貫いており、流通路51に直結している。連通孔52は、流通路51における径方向の外端部に配置されている。連通孔52は、流通路51と副液室15との間を前記軸線O方向に真っすぐ延びている。連通孔52の前記軸線O方向の大きさは、連通孔52の径方向の大きさより大きくなっている。また、連通孔52の平面視形状は、図2〜図4に示されるように、周方向に沿って延びる長孔形状となっている。
そして、第3オリフィス23は、収容室32と流通路51と連通孔52とにより構成されている。これにより、第3オリフィス23は、仕切り部材16において、径方向に沿う第2オリフィス22と第1オリフィス21との間に位置する部分に形成されている。
The main surface portion 30 is formed with a communication hole 52 that allows the flow passage 51 and the auxiliary liquid chamber 15 to communicate with each other and has a liquid flow resistance lower than that of the flow passage 51. The communication hole 52 passes through the main surface portion 30 in the direction of the axis O and is directly connected to the flow passage 51. The communication hole 52 is disposed at the radially outer end of the flow passage 51. The communication hole 52 extends straight between the flow passage 51 and the auxiliary liquid chamber 15 in the direction of the axis O. The size of the communication hole 52 in the direction of the axis O is larger than the size of the communication hole 52 in the radial direction. Moreover, the planar view shape of the communicating hole 52 becomes a long hole shape extended along the circumferential direction, as FIG.
The third orifice 23 is configured by the accommodation chamber 32, the flow passage 51, and the communication hole 52. Thereby, the third orifice 23 is formed in the partition member 16 at a portion located between the second orifice 22 and the first orifice 21 along the radial direction.

主面部30には、図1及び図4に示されるように、他方側に向けて突出し、かつ内側にこの主面部30を前記軸線O方向に貫く開口を有する囲繞筒53が形成されている。この囲繞筒53の内側が連通孔52となっている。連通孔52の内周縁のうち、径方向の外端に位置する部分は、内筒部27の内周面に段差なく連なっていて、内筒部27の一部と囲繞筒53の一部とが一致している。囲繞筒53における他方側の端縁は、内筒部27における他方側の端縁より一方側に位置している。   As shown in FIGS. 1 and 4, the main surface portion 30 is formed with a surrounding cylinder 53 that protrudes toward the other side and has an opening that penetrates the main surface portion 30 in the direction of the axis O on the inner side. The inside of the surrounding cylinder 53 is a communication hole 52. Of the inner peripheral edge of the communication hole 52, the portion located at the outer end in the radial direction is connected to the inner peripheral surface of the inner cylinder part 27 without a step, and a part of the inner cylinder part 27 and a part of the surrounding cylinder 53 Match. The other edge of the surrounding cylinder 53 is located on one side of the other edge of the inner cylinder portion 27.

弾性板24における他方側の裏面には、他方側に向けて突出し第1内環状突部30a内に嵌合された第2内環状突部24bと、他方側に向けて突出し第1外環状突部27aに外嵌された第2外環状突部24cと、が形成されている。第2内環状突部24bは、弾性板24における開口24aの周縁部に配置され、第2外環状突部24cは、弾性板24における外周縁部に配置されている。
蓋板26において、内側の開口26aより径方向の外側に位置する部分には、弾性板24における一方側の表面に向けて開口する窓孔26bが、周方向に間隔をあけて複数形成されている。この窓孔26bを通して、収容室32は主液室14に連通している。
On the other side of the elastic plate 24, a second inner annular protrusion 24b protruding toward the other side and fitted in the first inner annular protrusion 30a and a first outer annular protrusion protruding toward the other side are provided. A second outer annular protrusion 24c that is externally fitted to the portion 27a is formed. The second inner annular protrusion 24 b is disposed at the peripheral edge of the opening 24 a in the elastic plate 24, and the second outer annular protrusion 24 c is disposed at the outer peripheral edge of the elastic plate 24.
In the lid plate 26, a plurality of window holes 26 b that open toward the surface on one side of the elastic plate 24 are formed at intervals in the circumferential direction at a portion located on the outer side in the radial direction from the inner opening 26 a. Yes. The storage chamber 32 communicates with the main liquid chamber 14 through the window hole 26b.

ここで、防振装置1は、第2オリフィス22における副液室15側の開口を、振動発生部の駆動時に閉じ、かつ振動発生部のアイドリング時に開く開閉手段31を備えている。
開閉手段31は、例えば振動発生部がエンジンの場合、所定の回転数を超えたときに、第2オリフィス22における副液室15側の開口を閉じるようにしてもよい。
開閉手段31は、図示されない給排手段に連結される給排通路61が形成されるとともに、ダイヤフラム17から他方側に離れた位置に配設された基板部62と、基板部62とダイヤフラム17との間に配設され、基板部62との間に気密な拡縮空間を形成する拡縮膜63と、拡縮膜63を一方側に向けて付勢してダイヤフラム17の中央部17aを仕切り部材16の主面部30における第2オリフィス22の開口周縁部に向けて押し付ける付勢手段64と、を備えている。
Here, the vibration isolator 1 includes an opening / closing means 31 that closes the opening of the second orifice 22 on the side of the secondary liquid chamber 15 when the vibration generating unit is driven and opens the idling of the vibration generating unit.
For example, when the vibration generating unit is an engine, the opening / closing means 31 may close the opening on the side of the secondary liquid chamber 15 in the second orifice 22 when a predetermined rotation speed is exceeded.
The opening / closing means 31 is formed with a supply / discharge passage 61 connected to a supply / discharge means (not shown), a substrate portion 62 disposed at a position away from the diaphragm 17, and the substrate portion 62 and the diaphragm 17. The expansion / contraction film 63 that forms an airtight expansion / contraction space between the substrate portion 62 and the expansion / contraction film 63 is biased toward one side so that the central portion 17a of the diaphragm 17 is separated from the partition member 16. And an urging means 64 that presses toward the opening peripheral edge of the second orifice 22 in the main surface portion 30.

次に、以上のように構成された防振装置1の作用について説明する。   Next, the operation of the vibration isolator 1 configured as described above will be described.

まず、振動発生部のアイドリング時には、図示されない給排手段によって、給排通路61を通して拡縮膜63内を排気して拡縮膜63内を負圧にし、付勢手段64の一方側に向けた付勢力に抗して拡縮膜63を収縮させ、拡縮膜63によるダイヤフラム17に対する一方側に向けた押し上げを解除する。これにより、ダイヤフラム17による仕切り部材16の主面部30に向けた押し付けが解除され、第2オリフィス22の副液室15側に向けた開口が開放される。
そして、第1オリフィス21より流通抵抗が低い第2オリフィス22を通して、液体が流通し液柱共振を生じさせることとなり、入力されたアイドル振動が減衰吸収される。
First, at the time of idling of the vibration generating portion, an urging force directed toward one side of the urging means 64 by exhausting the inside of the expansion / contraction film 63 through the supply / exhaust passage 61 to make negative pressure in the expansion / contraction film 63 by an unillustrated supply / exhaust means. Against this, the expansion / contraction film 63 is contracted, and the push-up toward the diaphragm 17 by the expansion / contraction film 63 is released. Thereby, the pressing toward the main surface 30 of the partition member 16 by the diaphragm 17 is released, and the opening of the second orifice 22 toward the sub liquid chamber 15 is opened.
Then, the liquid flows through the second orifice 22 whose flow resistance is lower than that of the first orifice 21 to cause liquid column resonance, and the input idle vibration is attenuated and absorbed.

一方、振動発生部が駆動してシェイク振動が入力されると、例えば給排通路61を通して拡縮膜63内に給気する等して、拡縮膜63内を大気圧に戻し、付勢手段64の一方側に向けた付勢力によって拡縮膜63を拡張させることで、拡縮膜63によりダイヤフラム17の中央部17aを一方側に向けて押し上げる。これにより、ダイヤフラム17の中央部17aを、主面部30における第2オリフィス22の開口周縁部に押し付け、第2オリフィス22の副液室15側に向けた開口を閉塞する。
そして、第1オリフィス21を通して液体が流通し液柱共振を生じさせることとなり、入力されたシェイク振動が減衰吸収される。
On the other hand, when the vibration generator is driven and shake vibration is input, the inside of the expansion / contraction film 63 is returned to the atmospheric pressure by supplying air into the expansion / contraction film 63 through the supply / discharge passage 61, for example. The expansion / contraction film 63 is expanded by an urging force directed toward one side, whereby the central portion 17a of the diaphragm 17 is pushed up toward the one side by the expansion / contraction film 63. Thus, the central portion 17a of the diaphragm 17 is pressed against the opening peripheral edge portion of the second orifice 22 in the main surface portion 30, and the opening of the second orifice 22 toward the sub liquid chamber 15 is closed.
Then, the liquid flows through the first orifice 21 to cause liquid column resonance, and the input shake vibration is attenuated and absorbed.

さらにこの際、シェイク振動より高い周波数の振動が入力されると、弾性板24が振動することで、第3オリフィス23内の液体が、副液室15との間で流通路51及び連通孔52の双方を流通して液柱共振を生じさせることとなり、入力された振動が減衰吸収される。
そしてさらに高い周波数の振動が入力されると、流通路51及び連通孔52のうち、液体の流通抵抗が比較的高い流通路51のみで目詰まりが生じ、連通孔52と副液室15との間では液体が流通して液柱共振が生じ、この振動が減衰吸収される。
Further, at this time, when vibration having a frequency higher than the shake vibration is input, the elastic plate 24 vibrates, so that the liquid in the third orifice 23 flows between the sub liquid chamber 15 and the flow passage 51 and the communication hole 52. Both of them are circulated to cause liquid column resonance, and the input vibration is attenuated and absorbed.
When a vibration having a higher frequency is input, clogging occurs only in the flow passage 51 having a relatively high flow resistance of the liquid out of the flow passage 51 and the communication hole 52, and the communication hole 52 and the auxiliary liquid chamber 15 are separated from each other. The liquid flows between them to cause liquid column resonance, and this vibration is attenuated and absorbed.

以上説明したように、本実施形態による防振装置1によれば、周波数の比較的低い振動の入力時には目詰まりが生じず、かつ周波数の比較的高い振動の入力時に目詰まりが生じる流通路51と、流通路51に連通し、かつ周波数が多少変動しても目詰まりが生じない連通孔52と、が仕切り部材16に形成されているだけの簡易な構成で、周波数が互いに異なる複数種の入力振動を減衰吸収することが可能になり、このような作用を奏する防振装置1の低コスト化を図ることができる。
また、第1外環状突部27a及び第1内環状突部30aにより、弾性板24における他方側の裏面が支持されることによって、弾性板24と主面部30との間に流通路51が形成されるので、前述の作用効果を有する防振装置1を容易かつ確実に形成することができる。
さらに、流通路51が平面視環状に形成されているので、仕切り部材16のかさ張りを抑えつつ流通路51の長さを容易に長く確保することができる。
As described above, according to the vibration isolator 1 according to the present embodiment, the flow path 51 is not clogged when a vibration having a relatively low frequency is input and clogged when a vibration having a relatively high frequency is input. And a communication hole 52 that communicates with the flow passage 51 and that does not clog even if the frequency slightly fluctuates, and has a simple configuration in which the partition member 16 is formed, and a plurality of types having different frequencies. It becomes possible to attenuate and absorb the input vibration, and it is possible to reduce the cost of the vibration isolator 1 having such an effect.
Further, the flow path 51 is formed between the elastic plate 24 and the main surface portion 30 by supporting the back surface of the other side of the elastic plate 24 by the first outer annular projection 27a and the first inner annular projection 30a. Therefore, the vibration isolator 1 having the above-described effects can be easily and reliably formed.
Furthermore, since the flow passage 51 is formed in an annular shape in plan view, the length of the flow passage 51 can be easily ensured long while suppressing the bulkiness of the partition member 16.

また、第3オリフィス23のみならず、第1オリフィス21及び第2オリフィス22を備えているので、幅広い周波数帯にわたる振動を減衰吸収することができる。
さらに、第3オリフィス23が、仕切り部材16において、径方向に沿う第2オリフィス22と第1オリフィス21との間に位置する部分に形成されているので、防振装置1全体のかさ張りを抑えることができる。
Further, since not only the third orifice 23 but also the first orifice 21 and the second orifice 22 are provided, vibrations over a wide frequency band can be damped and absorbed.
Further, since the third orifice 23 is formed in a portion of the partition member 16 located between the second orifice 22 and the first orifice 21 along the radial direction, the bulk of the vibration isolator 1 is suppressed. Can do.

なお、本発明の技術範囲は、前述した各実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。   The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

例えば、前記実施形態では、仕切り部材16に第1オリフィス21及び第2オリフィス22を形成したが、これらのオリフィス21、22は形成しなくてもよく、また、開閉手段31も配設しなくてよい。
また、第3オリフィス23として、アイドル振動の周波数以上の周波数の振動にチューニングされた構成を示したが、これに限らず、例えばシェイク振動の周波数にチューニングする等、チューニングする周波数は適宜変更してもよい。
For example, in the above-described embodiment, the first orifice 21 and the second orifice 22 are formed in the partition member 16, but the orifices 21 and 22 may not be formed, and the opening / closing means 31 is not provided. Good.
Further, the third orifice 23 has been tuned to a vibration having a frequency equal to or higher than the frequency of idle vibration. However, the present invention is not limited to this, and for example, the frequency to be tuned may be changed appropriately. Also good.

前記実施形態では、弾性板24を、主面部30に形成した第1内環状突部30aと第1外環状突部27aとにより支持した構成を示したが、これに代えて例えば、第1内環状突部30a及び第1外環状突部27aを形成せずに、弾性板24に形成した第2内環状突部24b及び第2外環状突部24cそれぞれにおける他方側の端縁を、主面部30における一方側の表面に載置する等適宜変更してもよい。
また、主面部30の第1内環状突部30aと、弾性板24の第2内環状突部24bと、を前記軸線O方向に突き合わせてもよいし、主面部30の第1外環状突部27aと、弾性板24の第2外環状突部24cと、を前記軸線O方向に突き合わせてもよい。
その他、仕切り部材16の形態は前記実施形態に限らず適宜変更してもよい。
前述した実施形態では、エンジンを第2取付部材12に接続し、第1取付部材11を車体に接続する場合の説明をしたが、逆に接続するように構成してもよいし、それ以外の振動発生部と振動受部に防振装置を設置してもよい。
In the above embodiment, the elastic plate 24 is supported by the first inner annular protrusion 30a and the first outer annular protrusion 27a formed on the main surface portion 30. Without forming the annular protrusion 30a and the first outer annular protrusion 27a, the other side edge of each of the second inner annular protrusion 24b and the second outer annular protrusion 24c formed on the elastic plate 24 is the main surface portion. You may change suitably, such as mounting in the surface of one side in 30.
Further, the first inner annular protrusion 30 a of the main surface portion 30 and the second inner annular protrusion 24 b of the elastic plate 24 may be abutted in the direction of the axis O, or the first outer annular protrusion of the main surface portion 30. 27a and the second outer annular protrusion 24c of the elastic plate 24 may be butted in the direction of the axis O.
In addition, the form of the partition member 16 is not restricted to the said embodiment, You may change suitably.
In the above-described embodiment, the description has been given of the case where the engine is connected to the second mounting member 12 and the first mounting member 11 is connected to the vehicle body. However, the engine may be configured to be connected in reverse. You may install a vibration isolator in a vibration generation part and a vibration receiving part.

その他、本発明の趣旨を逸脱しない範囲で、上記した実施の形態における構成要素を周知の構成要素に置き換えることは適宜可能であり、また、上記した変形例を適宜組み合わせてもよい。   In addition, it is possible to appropriately replace the constituent elements in the above-described embodiments with well-known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

1 防振装置
11 第1取付部材
12 第2取付部材
13 弾性体
14 主液室
15 副液室
16 仕切り部材
24 弾性板
32 収容室
51 流通路
52 連通孔
DESCRIPTION OF SYMBOLS 1 Vibration isolator 11 1st attachment member 12 2nd attachment member 13 Elastic body 14 Main liquid chamber 15 Sub liquid chamber 16 Partition member 24 Elastic plate 32 Storage chamber 51 Flow path 52 Communication hole

Claims (4)

振動発生部及び振動受部のうちのいずれか一方に連結される筒状の第1取付部材、及び他方に連結される第2取付部材と、
これらの両取付部材同士を互いに連結する弾性体と、
液体が封入される前記第1取付部材内の液室を、前記弾性体を壁面の一部に有する主液室、及び副液室に仕切る仕切り部材と、
を備え、
前記仕切り部材には、弾性板が変位自在若しくは変形自在に収容されるとともに、前記主液室に連通する収容室が形成され、
前記収容室を画成する壁面のうちの前記副液室側の底壁面と、前記弾性板の外表面のうちの前記副液室側の裏面と、の間に、液体が流通可能な流通路が形成され、
前記仕切り部材には、前記流通路と前記副液室とを連通し、かつ前記流通路より液体の流通抵抗が低い連通孔が形成されていることを特徴とする防振装置。
A cylindrical first mounting member coupled to either one of the vibration generating unit and the vibration receiving unit, and a second mounting member coupled to the other;
An elastic body for connecting these two mounting members to each other;
A partition member that partitions the liquid chamber in the first mounting member in which the liquid is enclosed into a main liquid chamber having the elastic body in a part of a wall surface, and a sub liquid chamber;
With
In the partition member, an elastic plate is housed so as to be displaceable or deformable, and a housing chamber communicating with the main liquid chamber is formed,
A flow passage through which a liquid can flow between a bottom wall surface on the sub-liquid chamber side of the wall surface defining the storage chamber and a back surface on the sub-liquid chamber side of the outer surface of the elastic plate. Formed,
The vibration isolator, wherein the partition member is formed with a communication hole that communicates the flow passage and the auxiliary liquid chamber and has a lower flow resistance of the liquid than the flow passage.
請求項1記載の防振装置であって、
前記流通路は平面視環状に形成されていることを特徴とする防振装置。
The vibration isolator according to claim 1,
The vibration isolator is characterized in that the flow passage is formed in an annular shape in plan view.
請求項2記載の防振装置であって、
前記収容室の底壁面、及び前記弾性板の裏面のうちの少なくとも一方には、他方に向けて突出して当接する内環状突部と、前記内環状突部を径方向の外側から囲繞する外環状突部と、が配設され、これらの環状突部同士の間が前記流通路となっていることを特徴とする防振装置。
A vibration isolator according to claim 2,
At least one of the bottom wall surface of the storage chamber and the back surface of the elastic plate protrudes toward and comes into contact with the other, and the outer annular ring surrounds the inner annular protrusion from the outside in the radial direction. A vibration isolator characterized in that a projecting portion is provided, and a space between the annular projecting portions serves as the flow passage.
請求項1から3のいずれか1項に記載の防振装置であって、
前記仕切り部材に、
前記主液室と前記副液室とを連通し、シェイク振動の入力に対して液柱共振を生じさせる第1オリフィスと、
前記主液室と前記副液室とを連通し、アイドル振動の入力に対して液柱共振を生じさせる第2オリフィスと、
が形成され、
前記第2オリフィスは、前記第1取付部材の軸線方向に沿って延在し、
前記第1オリフィスは、前記仕切り部材の外周部に形成され、
前記収容室、前記流通路、及び前記連通孔は、前記仕切り部材において、前記軸線に直交する径方向に沿う前記第2オリフィスと前記第1オリフィスとの間に位置する部分に形成されていることを特徴とする防振装置。
The vibration isolator according to any one of claims 1 to 3,
In the partition member,
A first orifice communicating the main liquid chamber and the sub liquid chamber and causing liquid column resonance in response to an input of shake vibration;
A second orifice communicating the main liquid chamber and the sub liquid chamber and causing liquid column resonance in response to an input of idle vibration;
Formed,
The second orifice extends along an axial direction of the first mounting member;
The first orifice is formed on the outer periphery of the partition member;
The storage chamber, the flow passage, and the communication hole are formed in a portion of the partition member that is positioned between the second orifice and the first orifice along a radial direction orthogonal to the axis. Anti-vibration device characterized by
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021076169A (en) * 2019-11-07 2021-05-20 株式会社ブリヂストン Antivibration device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0454344U (en) * 1990-09-17 1992-05-11
JP2008196508A (en) * 2007-02-08 2008-08-28 Tokai Rubber Ind Ltd Fluid-sealed vibration isolating device
JP2009085313A (en) * 2007-09-28 2009-04-23 Tokai Rubber Ind Ltd Fluid-enclosed vibration isolator
JP2011185291A (en) * 2010-03-04 2011-09-22 Toyo Tire & Rubber Co Ltd Liquid filled vibration isolating device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0454344U (en) * 1990-09-17 1992-05-11
JP2008196508A (en) * 2007-02-08 2008-08-28 Tokai Rubber Ind Ltd Fluid-sealed vibration isolating device
JP2009085313A (en) * 2007-09-28 2009-04-23 Tokai Rubber Ind Ltd Fluid-enclosed vibration isolator
JP2011185291A (en) * 2010-03-04 2011-09-22 Toyo Tire & Rubber Co Ltd Liquid filled vibration isolating device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021076169A (en) * 2019-11-07 2021-05-20 株式会社ブリヂストン Antivibration device
JP7326120B2 (en) 2019-11-07 2023-08-15 株式会社プロスパイラ Anti-vibration device

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