JPH1096449A - Liquid-sealed vibration control device - Google Patents
Liquid-sealed vibration control deviceInfo
- Publication number
- JPH1096449A JPH1096449A JP24195697A JP24195697A JPH1096449A JP H1096449 A JPH1096449 A JP H1096449A JP 24195697 A JP24195697 A JP 24195697A JP 24195697 A JP24195697 A JP 24195697A JP H1096449 A JPH1096449 A JP H1096449A
- Authority
- JP
- Japan
- Prior art keywords
- partition wall
- membrane
- liquid
- orifice
- vibration isolator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Combined Devices Of Dampers And Springs (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は自動車のサスペンショ
ンマウントゴムやエンジンマウントゴムのような液封防
振装置に係り、特に非線形特性を発揮できるものに関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid seal vibration isolator such as a suspension mount rubber or an engine mount rubber of an automobile, and more particularly to a device capable of exhibiting non-linear characteristics.
【０００２】[0002]
【従来の技術】このような液封防振装置の一例として、
特開昭６４−１５６６号には、車体側に取付けられる第
１のブラケットと、振動部材側へ取付けられる第２のブ
ラケットと、これら両部材間に設けられるゴム部と、ゴ
ム部内に設けた液室と、この液室を２室に区割するゴム
仕切壁とを備え、ゴム仕切壁には、２つの液室を連通す
るオリフィス部と、中央部を薄肉して形成されたメンブ
ラン部とを一体に形成したものが示されている。2. Description of the Related Art As an example of such a liquid-sealed vibration isolator,
Japanese Patent Application Laid-Open No. 64-1566 discloses a first bracket attached to a vehicle body, a second bracket attached to a vibration member, a rubber portion provided between these two members, and a liquid provided in the rubber portion. Chamber, and a rubber partition wall for dividing the liquid chamber into two chambers. The rubber partition wall has an orifice portion communicating the two liquid chambers and a membrane portion formed by thinning the central portion. An integrally formed one is shown.
【０００３】[0003]
【発明が解決しようとする課題】このような液封防振装
置に望ましい性能は、エンジン振動のような高周波小振
幅の入力（以下、小振動という）を効果的に吸収するた
めの低動バネ特性と、タイヤアンバランスに原因するシ
ェイク振動のような低周波小振幅時の入力と、路面の凹
凸によってサスペンション側から入力される振動のよう
な低周波数大振幅の振動（以下、大振動という）入力時
に十分な減衰を得るための高減衰特性と、の両性能を発
揮できる低動バネ高減衰性能である。A desirable performance of such a liquid-vibration isolator is a low dynamic spring for effectively absorbing a high-frequency small-amplitude input (hereinafter referred to as small vibration) such as engine vibration. Characteristics, low-frequency low-amplitude input such as shake vibration caused by tire imbalance, and low-frequency high-amplitude vibration such as vibration input from the suspension due to uneven road surface (hereinafter referred to as large vibration) It is a high damping characteristic for obtaining sufficient damping at the time of input and a low dynamic spring high damping performance capable of exhibiting both performances.
【０００４】ところで、上記従来のものでは、メンブラ
ン部のバネ定数を小さくすることにより低動バネ状態に
できるが、このままであると、大振動入力時には、メン
ブラン部の弾性変形も比例して大きくなるので、十分な
高減衰を得ることができなくなる。このため、実際には
メンブラン部に所定ストローク以上の変形を規制する変
形規制部を設けることが必要になる。By the way, in the above-mentioned conventional device, a low dynamic spring state can be obtained by reducing the spring constant of the membrane portion. However, if this state is maintained, when a large vibration is input, the elastic deformation of the membrane portion increases proportionally. Therefore, a sufficiently high attenuation cannot be obtained. For this reason, in practice, it is necessary to provide a deformation restricting portion for restricting the deformation beyond a predetermined stroke in the membrane portion.
【０００５】しかし、このようにすると、メンブラン部
が変形規制されると同時に急激に減衰力が発生するの
で、そのたびに乗員がショックを感じて乗り心地を損な
うことがある。また、メンブラン部が変形規制部と接触
するたびに打音を発生するので騒音源になってしまう場
合もある。[0005] However, in this case, the deformation of the membrane portion is restricted, and a sudden damping force is generated at the same time, so that each time the occupant feels a shock, the ride comfort may be impaired. In addition, since a tapping sound is generated each time the membrane portion comes into contact with the deformation restricting portion, it may become a noise source.
【０００６】さらに、このようなメンブラン部における
バネ定数の階段状の変化は、オリフィス部における共振
周波数も階段状に変化することを意味し、その結果、減
衰を必要とする全領域において最適な共振周波数を維持
することが困難になる。そのうえ、構造面でも変形規制
部が必要なため部品点数が増加することになった。本願
はこれらの問題を解決するものである。Further, such a stepwise change in the spring constant in the membrane portion means that the resonance frequency in the orifice portion also changes in a stepwise manner. As a result, the optimum resonance in the entire region requiring damping is obtained. It becomes difficult to maintain the frequency. In addition, the number of parts is increased due to the necessity of the deformation restricting part in the structure. The present application solves these problems.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するた
め、請求項１に係る液封防振装置は、車体側又は振動部
材側のいずれか一方へ取付けられる第１の連結部材と、
他方へ取付けられる第２の連結部材と、これら両部材間
に設けられる弾性体と、この弾性体と、第１又は第２の
連結部材によって形成される壁部の間に設けられる液室
と、この液室を２室に区割するとともに周囲を前記第１
又は第２の連結部材のいずれか一方側へ固定される仕切
壁と、この仕切壁によって区画された２つの液室間を連
結するオリフィスとを備えた液封防振装置において、仕
切壁は入力振動に応じて変化する前記液室内の液圧変化
によって弾性変形を可能とするメンブラン部を備えると
ともに、メンブラン部が弾性変形するとき仕切壁が固定
されている前記第１又は第２の連結部材のいずれか側に
対して不動である不動部に当接する押し当て部をメンブ
ラン部と一体に形成したことを特徴とする。According to a first aspect of the present invention, there is provided a liquid ring vibration isolator according to the first aspect, comprising: a first connecting member attached to one of a vehicle body and a vibration member;
A second connecting member attached to the other, an elastic body provided between these two members, a liquid chamber provided between the elastic body and a wall formed by the first or second connecting member, This liquid chamber is divided into two chambers, and
Alternatively, in a liquid ring vibration isolator provided with a partition wall fixed to one side of the second connecting member and an orifice connecting two liquid chambers defined by the partition wall, the partition wall has an input. A membrane portion that allows elastic deformation by a change in the liquid pressure in the liquid chamber that changes in response to vibration; and a partition wall fixed to the first or second connecting member when the membrane portion elastically deforms. It is characterized in that a pressing portion that abuts on an immovable portion that is immovable on either side is formed integrally with the membrane portion.
【０００８】請求項２に係る液封防振装置は、請求項１
において、押し当て部が振動の非入力時に不動部と非接
触であることを特徴とする。According to a second aspect of the present invention, there is provided a liquid ring vibration isolator.
Wherein the pressing portion is not in contact with the immovable portion when no vibration is input.
【０００９】請求項３に係る液封防振装置は、請求項１
において、押し当て部が常時不動部と接触していること
を特徴とする。According to a third aspect of the present invention, there is provided a liquid ring vibration isolator.
Wherein the pressing portion is always in contact with the immovable portion.
【００１０】請求項４に係る液封防振装置は、請求項１
乃至３いずれかに記載したものにおいて、仕切壁前記メ
ンブラン部を囲む周囲は第１又は第２の連結部材のいず
れか一方へ固定された仕切壁支持部材によって支持する
とともに、この仕切壁支持部材を前記押し当て部が当接
するための不動部としたことを特徴とする。[0010] The liquid-sealed vibration isolator according to claim 4 is based on claim 1.
In any one of the structures described in any one of (1) to (3), the periphery surrounding the partition wall is supported by a partition wall support member fixed to one of the first and second connecting members, and the partition wall support member is supported by the partition wall support member. It is characterized in that the pressing portion is an immovable portion for abutting.
【００１１】請求項５に係る液封防振装置は、請求項４
において、仕切壁をメンブラン部と押し当て部で構成す
るとともに、仕切壁支持部材によって囲まれた空間内に
オリフィス通路を形成としたことを特徴とする。According to a fifth aspect of the present invention, there is provided a liquid ring vibration isolator.
Wherein the partition wall is constituted by a membrane portion and a pressing portion, and an orifice passage is formed in a space surrounded by the partition wall support member.
【００１２】請求項６に係る液封防振装置は、請求項１
乃至３いずれかに記載したものにおいて、メンブラン部
とオリフィス部をそれぞれ異なる特性を有する材料で形
成し、これらメンブラン部とオリフィス部を結合して仕
切壁を形成したことを特徴とする。According to a sixth aspect of the present invention, there is provided a liquid ring vibration isolator.
Any one of the above-described aspects, wherein the membrane portion and the orifice portion are formed of materials having different characteristics, and the membrane portion and the orifice portion are combined to form a partition wall.
【００１３】請求項７に係る液封防振装置は、請求項１
乃至３のいずれにおいて、仕切壁が、一体に形成された
メンブラン部とオリフィス部を備えることを特徴とす
る。According to a seventh aspect of the present invention, there is provided a liquid ring vibration isolator.
In any one of the structures (1) to (3), the partition wall is provided with a membrane portion and an orifice portion formed integrally.
【００１４】請求項８に係る液封防振装置は、請求項６
又は７において、メンブラン部の肉厚をオリフィス部よ
りも薄肉にしたことを特徴とする。The liquid ring vibration isolator according to the eighth aspect is the sixth aspect.
Or 7 is characterized in that the thickness of the membrane portion is made thinner than that of the orifice portion.
【００１５】請求項９に係る液封防振装置は、請求項６
又は７において、 オリフィス部と一様の肉厚にして厚
肉化としたことを特徴とする。According to a ninth aspect of the present invention, there is provided a liquid ring vibration isolator.
Or 7 is characterized in that the orifice portion and the orifice portion have a uniform thickness to increase the thickness.
【００１６】請求項１０に係る液封防振装置は、請求項
６又は７において、 メンブラン部の中央部を厚肉部と
し、この厚肉部とオリフィス部との間を薄肉部にしたこ
とを特徴とする。According to a tenth aspect of the present invention, in the liquid ring vibration isolator according to the sixth or seventh aspect, the central portion of the membrane portion is a thick portion, and the portion between the thick portion and the orifice portion is a thin portion. Features.
【００１７】請求項１１に係る液封防振装置は、請求項
６又は７において、前記仕切壁支持部材に前記オリフィ
ス部を嵌合するためのリング溝を設けるとともに、前記
仕切壁のオリフィス部とメンブラン部との間に溝を設
け、前記オリフィス部を前記仕切壁支持部材のリング溝
内へ嵌合するとともに、このリング溝を構成する仕切壁
支持部材の内壁を前記仕切壁のオリフィス部とメンブラ
ン部との間に形成された溝内へ入れることを特徴とす
る。According to an eleventh aspect of the present invention, in the liquid ring vibration isolator according to the sixth or seventh aspect, a ring groove for fitting the orifice portion is provided in the partition wall support member, and the orifice portion of the partition wall is provided with a ring groove. A groove is provided between the partition wall support member and the orifice portion of the partition wall, and the orifice portion is fitted into a ring groove of the partition wall support member. It is characterized in that it is inserted into a groove formed between the first and second portions.
【００１８】請求項１２に係る液封防振装置は、請求項
１１において、仕切壁支持部材の内壁に押し当て部が当
接することを特徴とする。A liquid seal vibration isolator according to a twelfth aspect is characterized in that, in the eleventh aspect, the pressing portion comes into contact with the inner wall of the partition wall support member.
【００１９】請求項１３に係る液封防振装置は、請求項
１乃至１２のいずれかにおいて、前記不動部へ当接する
部分である押し当て部の先端に異なる角度の複数の傾斜
面を形成したことを特徴とする。According to a thirteenth aspect of the present invention, in the liquid ring vibration isolator according to any one of the first to twelfth aspects, a plurality of inclined surfaces having different angles are formed at a tip end of a pressing portion which is a portion contacting the immobile portion. It is characterized by the following.
【００２０】請求項１４に係る液封防振装置は、請求項
１乃至１３のいずれかにおいて、前記不動部の押し当て
部が当接する部分に弾性部を設けたことを特徴とする。A liquid seal vibration isolator according to a fourteenth aspect is characterized in that, in any one of the first to thirteenth aspects, an elastic portion is provided at a portion where the pressing portion of the immovable portion abuts.
【００２１】請求項１５に係る液封防振装置は、請求項
１乃至１４のいずれかにおいて、前記不動部へ当接する
部分である押し当て部の先端が主たる振動の入力方向と
直交する方向から不動部へ当接することを特徴とする。According to a fifteenth aspect of the present invention, in the liquid ring vibration isolator according to any one of the first to fourteenth aspects, the tip of the pressing portion, which is a portion contacting the immovable portion, extends from a direction orthogonal to the main vibration input direction. It is characterized in that it comes into contact with an immovable part.
【００２２】請求項１６に係る液封防振装置は、請求項
１乃至１５のいずれかにおいて、メンブラン部における
弾性変形量の増大に応じて、不動部へ当接する押し当て
部の接触面積が増大するように変化することを特徴とす
る。In a liquid-sealing vibration isolator according to the present invention, the contact area of the pressing portion abutting on the immovable portion increases in accordance with the increase in the amount of elastic deformation in the membrane portion. It is characterized by the following:
【００２３】[0023]
【作用】請求項１の発明によれば、仕切壁がメンブラン
部を備えるので、共振によりオリフィス通路が見かけ上
閉止した状態でも、このメンブラン部が入力振動に応じ
た弾性変形をして振動を吸収し、防振装置全体の剛性化
を防ぐ。そのうえ、メンブラン部が弾性変形すると、メ
ンブラン部に一体形成された押し当て部が不動部に当接
して押し付けられ、その際に発生する押し当て部の反発
力は非線形に変化するため、メンブラン部は弾性変形量
に応じてバネ定数が変化し、非線形のバネ特性が得られ
る。その結果、メンブラン部が変形するにつれてオリフ
ィス通路による減衰力を高めることができ、かつ共振周
波数も減衰を必要とする全領域内において最適なものに
維持され易くなる。According to the first aspect of the present invention, since the partition wall has the membrane portion, even when the orifice passage is apparently closed by resonance, the membrane portion elastically deforms according to the input vibration to absorb the vibration. In addition, rigidity of the whole vibration isolator is prevented. In addition, when the membrane portion is elastically deformed, the pressing portion formed integrally with the membrane portion is pressed against the immovable portion, and the repulsive force of the pressing portion generated at that time changes nonlinearly. The spring constant changes according to the amount of elastic deformation, and a non-linear spring characteristic is obtained. As a result, as the membrane portion deforms, the damping force by the orifice passage can be increased, and the resonance frequency can be easily maintained at an optimum value in the entire region requiring damping.
【００２４】このとき、メンブラン部が弾性変形前の初
期状態で、押し当て部を不動部と非接触にしておけば、
所定弾性変形量で押し当て部が不動部へ接触した時点で
急激にバネ定数が変化するので、階段状の変曲部を有す
る非線形のバネ特性が可能になる。At this time, if the pressing portion is kept out of contact with the immovable portion in the initial state before the elastic deformation of the membrane portion,
Since the spring constant changes abruptly when the pressing portion comes into contact with the immovable portion with a predetermined amount of elastic deformation, a non-linear spring characteristic having a step-like inflection portion becomes possible.
【００２５】一方、メンブラン部の初期状態から押し当
て部を不動部に接触させておけば、バネ定数の変化が階
段状とならず滑らかな連続曲線でかつ非線形に変化す
る。On the other hand, if the pressing portion is brought into contact with the immovable portion from the initial state of the membrane portion, the change in the spring constant is not a step-like change but a smooth continuous curve and changes non-linearly.
【００２６】請求項４の発明によれば、押し当て部の当
接する不動部を仕切壁支持部材とすることにより、不動
部の確保が容易になる。According to the fourth aspect of the present invention, since the immovable portion which the pressing portion abuts is a partition wall support member, it is easy to secure the immovable portion.
【００２７】請求項５の発明によれば、仕切壁をメンブ
ラン部と押し当て部で形成し、仕切壁支持部材を利用し
てオリフィス部を形成することにより、オリフィス通路
の通路断面積をより安定させることができる。According to the fifth aspect of the present invention, the partition wall is formed by the membrane portion and the pressing portion, and the orifice portion is formed by using the partition wall support member, so that the passage sectional area of the orifice passage is more stabilized. Can be done.
【００２８】請求項６の発明によれば、メンブラン部と
オリフィス部をそれぞれ異なる特性を有する材料で形成
して両者を接着等により連結することにより、各部の成
形を小型にでき、かつ異種物性の材料を組み合わせるこ
とも可能にする。According to the sixth aspect of the present invention, by forming the membrane portion and the orifice portion from materials having different characteristics and connecting them by bonding or the like, the molding of each portion can be reduced in size and the dissimilar physical properties can be reduced. It also allows the combination of materials.
【００２９】請求項７の発明によれば、メンブラン部と
オリフィス部を一体にして仕切壁を形成すると、仕切壁
は弾性変形機能とオリフィス機能とストッパー機能を一
体に発揮でき、しかも、オリフィス部の形成が容易にな
る。According to the seventh aspect of the invention, when the partition wall is formed by integrating the membrane portion and the orifice portion, the partition wall can integrally exhibit the elastic deformation function, the orifice function, and the stopper function. It is easy to form.
【００３０】請求項８の発明によれば、メンブラン部の
肉厚を薄肉にすると、弾性変形が容易になり、バネ定数
を低くできる。According to the eighth aspect of the present invention, when the thickness of the membrane portion is reduced, elastic deformation is facilitated and the spring constant can be reduced.
【００３１】請求項９の発明によれば、オリフィス部を
一様の肉厚にして厚肉化すると、よりバネ定数を高くで
きる。According to the ninth aspect of the present invention, when the orifice portion is formed to have a uniform thickness and a large thickness, the spring constant can be further increased.
【００３２】請求項１０の発明によれば、中央部を厚肉
部とし、この厚肉部とオリフィス部との間を薄肉部とす
れば、メンブラン部の弾性を高め、かつバネ定数を任意
にコントロールでき易くなる。According to the tenth aspect of the present invention, when the central portion is a thick portion and the portion between the thick portion and the orifice portion is a thin portion, the elasticity of the membrane portion is increased and the spring constant is arbitrarily set. It becomes easier to control.
【００３３】請求項１１の発明によれば、オリフィス部
を仕切壁支持部材のリング溝内へ嵌合するとともに、こ
の仕切壁支持部材の内壁を仕切壁のオリフィス部とメン
ブラン部との間に形成された溝内へ入れることにより、
リング溝周囲の壁でオリフィス部を囲むので、オリフィ
ス部の変形による通路断面積の変化を抑制できる。According to the eleventh aspect of the present invention, the orifice portion is fitted into the ring groove of the partition wall support member, and the inner wall of the partition wall support member is formed between the orifice portion and the membrane portion of the partition wall. By putting it in the groove
Since the orifice portion is surrounded by the wall around the ring groove, a change in the passage cross-sectional area due to deformation of the orifice portion can be suppressed.
【００３４】請求項１２の発明によれば、押し当て部を
リング溝の内壁に押し当接させることにより、押し当て
部の受け止め構造を簡単に形成できる。According to the twelfth aspect of the present invention, the structure for receiving the pressing portion can be easily formed by pressing the pressing portion against the inner wall of the ring groove.
【００３５】請求項１３の発明によれば、押し当て部の
先端を異なる角度の複数の傾斜面にすれば、メンブラン
部の弾性変形に応じてバネ定数が変化し、多段の非線形
ばね特性を得ることができる。According to the thirteenth aspect of the present invention, if the tip of the pressing portion has a plurality of inclined surfaces having different angles, the spring constant changes according to the elastic deformation of the membrane portion, and multi-stage nonlinear spring characteristics are obtained. be able to.
【００３６】請求項１４の発明によれば、不動部の押し
当て部が当接する部分に弾性部を設けると、押し当て部
接触時の騒音を防止できる。According to the fourteenth aspect of the present invention, if the elastic portion is provided at a portion of the immovable portion where the pressing portion comes into contact, it is possible to prevent noise when the pressing portion comes into contact.
【００３７】請求項１５の発明によれば、押し当て部の
先端が主たる振動の入力方向と直交する方向から不動部
へ当接するため、押し当て部をメンブラン部の周辺部に
形成可能であり、不動部の確保を容易にするとともに、
最も弾性変形量が大きくなるメンブラン部中央における
弾性変形の支障にならない。According to the fifteenth aspect of the present invention, since the tip of the pressing portion abuts on the immovable portion in a direction orthogonal to the main vibration input direction, the pressing portion can be formed in the peripheral portion of the membrane portion, In addition to making it easy to secure fixed parts,
It does not hinder the elastic deformation at the center of the membrane where the elastic deformation is greatest.
【００３８】請求項１６の発明によれば、不動部へ当接
する押し当て部の接触面積が、メンブラン部における弾
性変形量の増大に応じて増大するように変化するため、
メンブラン部のバネ定数が非線形になる。According to the sixteenth aspect of the present invention, the contact area of the pressing portion abutting on the immovable portion changes so as to increase as the amount of elastic deformation in the membrane portion increases.
The spring constant of the membrane becomes non-linear.
【００３９】[0039]
【実施例】図１及び図２に基づいてエンジンマウントと
して構成された一実施例を説明する。図２はエンジンマ
ウントの全断面図であり、図１はその要部を拡大した図
である。まず図２においてこのエンジンマウントは、振
動側であるエンジンへ取付けられる第１の連結部材１
と、車体側と連結する第２の連結部材２とがゴム３を介
して連結されている。但し、エンジン側と車体側の連結
関係は逆でもよい。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment constructed as an engine mount will be described with reference to FIGS. 1 and 2. FIG. FIG. 2 is an overall sectional view of the engine mount, and FIG. 1 is an enlarged view of a main part thereof. First, in FIG. 2, this engine mount is a first connecting member 1 attached to the engine on the vibration side.
And a second connecting member 2 connected to the vehicle body side are connected via rubber 3. However, the connection relationship between the engine side and the vehicle body side may be reversed.
【００４０】第１の連結部材１は図で下方へ開放された
椀状をなし、その開放部にはハウジング４が取付けら
れ、これら第１の連結部材１とハウジング４の内部に略
密閉空間を形成し、ダイアフラム５によってゴム３側に
非圧縮性の液体が封入された液室が区画形成されてい
る。The first connecting member 1 has a bowl shape opened downward in the figure, and a housing 4 is attached to the opening thereof. A substantially closed space is provided inside the first connecting member 1 and the housing 4. A liquid chamber in which an incompressible liquid is sealed is defined on the rubber 3 side by the diaphragm 5.
【００４１】この液室はゴム仕切壁６によってゴム３側
の第１室７とゴム仕切壁６より下方の第２室８に区画さ
れ、両室はゴム仕切壁６の外周部であるオリフィス部６
ａに形成されたオリフィス通路９によって連通されてい
る。オリフィス通路９はリングプレート１０で覆われ、
その一部に形成された連通孔１０ａで一端が第１室７と
連通し、かつ他端は後述するように第２室８と連通して
いる。The liquid chamber is partitioned by a rubber partition wall 6 into a first chamber 7 on the rubber 3 side and a second chamber 8 below the rubber partition wall 6, and both chambers are orifice portions which are outer peripheral portions of the rubber partition wall 6. 6
The orifices 9 are communicated with each other by an orifice passage 9 formed in the a. The orifice passage 9 is covered with a ring plate 10,
One end communicates with the first chamber 7 through a communication hole 10a formed in a part thereof, and the other end communicates with the second chamber 8 as described later.
【００４２】ゴム仕切壁６はオリフィス通路９が形成さ
れたオリフィス部６ａ、中間部のメンブラン部１１、そ
の下面に形成された押し当て部１２とで構成される。The rubber partition wall 6 is composed of an orifice portion 6a in which an orifice passage 9 is formed, a membrane portion 11 in an intermediate portion, and a pressing portion 12 formed on the lower surface thereof.
【００４３】図１に明らかなように、押し当て部１２は
分離溝１３により、ゴム仕切壁６から先端側が分離され
たリップ状部分であり、本実施例の場合その先端はメン
ブラン部１１が弾性変形しない初期状態から押し当て部
１２の先端が仕切壁支持部材１４の内壁１４ｂへ当接し
ている。As is apparent from FIG. 1, the pressing portion 12 is a lip-shaped portion whose front end is separated from the rubber partition wall 6 by a separation groove 13, and in the present embodiment, the front end of the lip is elastic. The leading end of the pressing portion 12 is in contact with the inner wall 14b of the partition wall support member 14 from an initial state where the partition wall supporting member 14 is not deformed.
【００４４】また、内壁１４ｂは押し当て部１２の先端
が当接するための不動部の一具体例であり、押し当て部
１２は主たる振動の入力方向（メンブラン部１１の中心
軸線に平行な方向）と直交する方向から突き当たるよう
になっている。The inner wall 14b is a specific example of an immovable portion with which the tip of the pressing portion 12 contacts, and the pressing portion 12 is in the main vibration input direction (direction parallel to the central axis of the membrane portion 11). It comes to abut from a direction perpendicular to.
【００４５】仕切壁支持部材１４はリング溝１４ｅを有
するリング状の部材であり、リングプレート１０と平行
にゴム仕切壁６の反対面（裏面）に沿うとともに、リン
グ溝１４ｅにはオリフィス部６ａが嵌合し、かつ内周側
先端１４ａが分離溝１３内へ入り込んで、その先端がリ
ングプレート１０と平行に中心側へ屈曲している。The partition wall support member 14 is a ring-shaped member having a ring groove 14e. The partition wall support member 14 extends along the opposite surface (back surface) of the rubber partition wall 6 in parallel with the ring plate 10, and the ring groove 14e has an orifice portion 6a. The inner peripheral end 14a fits into the separation groove 13 and is bent toward the center in parallel with the ring plate 10.
【００４６】押し当て部１２は、先端が仕切壁支持部材
１４へ押し当てられており、メンブラン部１１が図の下
方へ屈曲変形する場合、仕切壁支持部材１４へ押しつけ
られて変形することにより、メンブラン部１１の変形量
増大に対して非線形的に増大する反発力を生じ、その結
果、メンブラン部１１の変形程度を規制するようになっ
ている。The tip of the pressing portion 12 is pressed against the partition wall support member 14. When the membrane portion 11 is bent and deformed downward in the drawing, it is pressed against the partition wall support member 14 and deformed. A repulsive force that increases non-linearly with respect to an increase in the deformation amount of the membrane portion 11 is generated, and as a result, the degree of deformation of the membrane portion 11 is regulated.
【００４７】ゴム仕切壁６を嵌合した仕切壁支持部材１
４は上側にリングプレート１０を乗せ、下側にダイアフ
ラム５の周囲に形成された取付プレート５ａを重ねた状
態で仕切壁支持部材１４の開口部に形成された大径部４
ｂの段部４ｃ上に重ねられ、さらにリングプレート１０
上に第１の連結部材１の下端部に形成された外向きのフ
ランジ部１ａを重ね、フランジ部１ａ上に、リングプレ
ート１０と、仕切壁支持部材１４の外壁１４ｃの先端と
を重ねた状態で、ハウジング４の先端４ａをカシメて全
体を固着する。The partition wall support member 1 fitted with the rubber partition wall 6
Reference numeral 4 denotes a large-diameter portion 4 formed on the opening of the partition wall support member 14 with the ring plate 10 placed on the upper side and the mounting plate 5a formed around the diaphragm 5 on the lower side.
b on the step 4c, and furthermore, the ring plate 10
A state in which an outward flange portion 1a formed at a lower end portion of the first connecting member 1 is overlapped thereon, and the ring plate 10 and a tip of an outer wall 14c of the partition wall support member 14 are overlapped on the flange portion 1a. Then, the front end 4a of the housing 4 is caulked and the whole is fixed.
【００４８】このとき、先端４ａのカシメ程度を調整す
ることにより、リングプレート１０をゴム仕切壁６側へ
圧接して、リングプレート１０の下方すなわちオリフィ
ス部６ａ側をメンブラン部１１側よりも圧縮して締めし
ろ１１ａの形成を調節する。但し、この締めしろ１１ａ
は後述する別実施例に示すように、設けないようにもで
きる。At this time, by adjusting the degree of caulking of the tip 4a, the ring plate 10 is pressed against the rubber partition wall 6 and the lower part of the ring plate 10, ie, the orifice portion 6a side, is compressed more than the membrane portion 11 side. The formation of the interference 11a is adjusted. However, this interference 11a
May be omitted as shown in another embodiment described later.
【００４９】図３は、押し当て部１２の変形例であり、
その先端部にテーパー１５、１６を設け、それぞれの角
度（Ａ，Ｂ）を変化させることにより、先端が仕切壁支
持部材１４へ突き当たる程度を変化させると、押し当て
部１２の接触面積がメンブラン部１１の弾性変形に応じ
て増大するように変化するとともに、その変化の仕方が
異なるため、様々な非線形特性が得られる。なお、押し
当て部１２の肉厚を多段の階段状にしても同様な特性変
化を期待できる。FIG. 3 shows a modification of the pressing portion 12.
Tapers 15 and 16 are provided at the tips, and the angles (A, B) are changed to change the degree at which the tips abut against the partition wall support member 14. 11 changes in accordance with the elastic deformation of the elastic member 11 and the manner of the change differs, so that various nonlinear characteristics can be obtained. Even if the thickness of the pressing portion 12 is multi-stepped, similar characteristic changes can be expected.
【００５０】第７図は、仕切壁部分の構造を詳細に説明
するものである。リングプレート１０はドーナツ板状の
金属製部材であり、一部にオリフィス連通孔１０ａと、
位置決穴１０ｂが形成されている。FIG. 7 explains in detail the structure of the partition wall portion. The ring plate 10 is a donut plate-shaped metal member, and has an orifice communication hole 10a,
A positioning hole 10b is formed.
【００５１】ゴム仕切壁６は中央部をメンブラン部１１
とし、このメンブラン部１１はオリフィス部６ａより薄
肉で弾性変形が容易である。オリフィス部６ａの上面で
リングプレート１０によって覆われる部分には、略Ｕ字
状断面で上方へ開放されたリング溝９ｃがほぼ全周に形
成されている。The rubber partition 6 has a central portion at the membrane portion 11.
The membrane portion 11 is thinner than the orifice portion 6a and is easily elastically deformed. A ring groove 9c, which has a substantially U-shaped cross section and is open upward, is formed substantially all around the upper surface of the orifice portion 6a covered by the ring plate 10.
【００５２】リング溝９ｃとこの開口部を覆うリングプ
レート１０によってオリフィス通路９が略リング状に形
成される（図２参照）。リング溝９ｃの一端部に形成さ
れた広幅部９ａは連通孔１０ａと重なる。リング溝９ｃ
の他端部は下方へ延びて裏面へ開口する貫通穴９ｂと接
続し、貫通穴９ｂは仕切壁支持部材１４のオリフィス連
通穴１４ｇと重なる。The orifice passage 9 is formed in a substantially ring shape by the ring groove 9c and the ring plate 10 covering this opening (see FIG. 2). The wide portion 9a formed at one end of the ring groove 9c overlaps the communication hole 10a. Ring groove 9c
Is connected to a through hole 9b extending downward and opening to the rear surface, and the through hole 9b overlaps with the orifice communication hole 14g of the partition wall support member 14.
【００５３】仕切壁支持部材１４はオリフィス部６ａを
嵌合するためのリング溝１４ｅを備えたカップ（ｃｕ
ｐ）状の金属製部材であり、リング溝１４ｅは間隔を持
って同心円上に配置された外壁１４ｃと内壁１４ｂ及び
底部１４ｄで形成されている。仕切壁支持部材１４のリ
ング溝１４ｅよりも内方に形成された中央穴１４ｆには
メンブラン部１１が入る。底部１４ｄには、前記オリフ
ィス連通穴１４ｇと位置決穴１４ｈが形成されている。
一方、ゴム仕切壁６のうちオリフィス部６ａの上下各表
面には、位置決突起６ｂ及び、６ｃが形成されている。The partition wall support member 14 is a cup (cu) provided with a ring groove 14e for fitting the orifice portion 6a.
The ring groove 14e is formed of an outer wall 14c, an inner wall 14b, and a bottom 14d which are concentrically arranged at intervals. The membrane portion 11 is inserted into a center hole 14f formed inside the ring groove 14e of the partition wall support member 14. The bottom portion 14d is formed with the orifice communication hole 14g and the positioning hole 14h.
On the other hand, positioning protrusions 6b and 6c are formed on the upper and lower surfaces of the orifice portion 6a of the rubber partition wall 6, respectively.
【００５４】そこで、リングプレート１０、ゴム仕切壁
６及び仕切壁支持部材１４を互いに重ねて、これらの３
部材を一体化するとき、位置決突起６ｂ及び６ｃをそれ
ぞれリングプレート１０の位置決穴１０ｂ及び仕切壁支
持部材１４の位置決穴１４ｈと嵌合させると、広幅部９
ａと連通孔１０ａが重なり、同時に貫通穴９ｂが仕切壁
支持部材１４のオリフィス連通穴１４ｇと重なる。この
ため、第１室７と第２室８がオリフィス通路９を介して
連通する。Therefore, the ring plate 10, the rubber partition wall 6, and the partition wall support member 14 are overlapped with each other,
When the members are integrated, when the positioning protrusions 6b and 6c are fitted into the positioning holes 10b of the ring plate 10 and the positioning holes 14h of the partition wall support member 14, respectively, the wide portion 9 is formed.
a and the communication hole 10a overlap, and at the same time, the through hole 9b overlaps with the orifice communication hole 14g of the partition wall support member 14. Therefore, the first chamber 7 and the second chamber 8 communicate with each other via the orifice passage 9.
【００５５】図４乃至図６は本発明の液封防振装置によ
って得られるメンブラン部のバネ特性を説明するための
グラフである。このうち、図４はメンブラン部のバネ特
性を示すグラフであり、横軸に変位、縦軸にバネ力を示
す。図５は減衰特性を示すグラフであり、横軸に入力振
動の周波数、縦軸に減衰係数を示す。図６は動バネ特性
を示すグラフであり、横軸に入力振動の周波数、縦軸に
動バネ係数を示す。FIGS. 4 to 6 are graphs for explaining the spring characteristics of the membrane portion obtained by the liquid ring vibration isolator according to the present invention. FIG. 4 is a graph showing the spring characteristics of the membrane portion, in which the horizontal axis represents the displacement and the vertical axis represents the spring force. FIG. 5 is a graph showing the damping characteristics. The horizontal axis indicates the frequency of the input vibration, and the vertical axis indicates the damping coefficient. FIG. 6 is a graph showing dynamic spring characteristics, in which the horizontal axis represents the frequency of the input vibration and the vertical axis represents the dynamic spring coefficient.
【００５６】より非線形になったバネ特性が得られる。
また、エンジンマウントの場合、エンジンの収れん性が
必要とされる変位域での減衰特性は図５のように高減衰
特性となり、エンジンの防振（音、振動）が必要とされ
る変位域での動バネ特性は図６のように低動バネ特性と
なり、高減衰と低動バネの両立が計れる。A more non-linear spring characteristic is obtained.
In the case of an engine mount, the damping characteristic in a displacement region where convergence of the engine is required becomes a high damping characteristic as shown in FIG. 5, and in a displacement region where vibration damping (sound and vibration) of the engine is required. As shown in FIG. 6, the dynamic spring characteristic has a low dynamic spring characteristic, and both high attenuation and low dynamic spring can be achieved.
【００５７】そのうえ、押し当て部１２を、メンブラン
部１１が弾性変形しない初期状態から内壁１４ｂに当接
させておくことにより、メンブラン部１１の弾性定数変
化を階段の無い滑らかな連続曲線にすることができる。In addition, by making the pressing portion 12 abut on the inner wall 14b from the initial state where the membrane portion 11 is not elastically deformed, the change of the elastic constant of the membrane portion 11 is made a smooth continuous curve without steps. Can be.
【００５８】しかも、押し当て部１２の先端が主たる振
動の入力方向と直交する方向から内壁１４ｂへ当接する
ため、押し当て部１２をメンブラン部１１の周辺部に形
成可能であり、不動部の確保を容易にするとともに、最
も弾性変形量が大きくなるメンブラン部中央における弾
性変形の支障にならないようにできる。Further, since the tip of the pressing portion 12 abuts on the inner wall 14b from a direction perpendicular to the main vibration input direction, the pressing portion 12 can be formed in the peripheral portion of the membrane portion 11, and the immovable portion is secured. And the elastic deformation at the center of the membrane portion where the amount of elastic deformation is largest is not hindered.
【００５９】また、サスペンションからの大入力の際
は、押し当て部１２によりメンブラン部１１の変位規制
をして耐久性を向上させることが出来る。さらにメンブ
ラン部１１のリングプレート１０と重なる部分に締めし
ろ１１ａを持たせることによりメンブラン１１による打
音発生をなくすことが出来る。In the case of a large input from the suspension, the displacement of the membrane portion 11 can be restricted by the pressing portion 12 to improve the durability. Further, by providing the interference portion 11a at a portion of the membrane portion 11 overlapping with the ring plate 10, it is possible to eliminate the occurrence of a hitting sound by the membrane 11.
【００６０】さらに、図３に示すようなメンブラン部１
１のバネ定数と押し当て部１２の先端テーパー形状の組
み合わせによりさまざまな減衰性と動バネ特性のバラン
スチューニングが可能となる。Further, as shown in FIG.
The balance between various damping properties and dynamic spring characteristics can be achieved by a combination of the spring constant of 1 and the tapered end of the pressing portion 12.
【００６１】図８は第２実施例の要部を示す。このメン
ブラン部１１はオリフィス部６ａと一様の肉厚をなして
いる点及びオリフィス部６ａ上にリングプレート１０を
被せる際の締めしろである段部を形成してない点で前実
施例と異なる。FIG. 8 shows a main part of the second embodiment. This membrane portion 11 is different from the previous embodiment in that it has a uniform thickness with the orifice portion 6a and that it does not have a step portion which is an interference when the ring plate 10 is put on the orifice portion 6a. .
【００６２】本実施例のように構成すると、メンブラン
部１１のバネ定数を大きくできるので、肉厚の調節によ
りバネ定数のコントロールが可能になる。なお、他の点
は前実施例と同じであり、したがって同一部分又は同一
機能部分について同一符号を使用して示す（以下の各実
施例も同様）。With the configuration as in this embodiment, the spring constant of the membrane portion 11 can be increased, so that the spring constant can be controlled by adjusting the wall thickness. The other points are the same as those of the previous embodiment. Therefore, the same portions or the same functional portions are denoted by the same reference numerals (the same applies to the following embodiments).
【００６３】図９は、メンブラン部１１の中央部のみを
厚肉部１１ｂとして形成したものであり、厚肉部１１ｂ
と押し当て部１２の間はリング状の薄肉部１１ｃになっ
ている。このようにすると、第１実施例と第２実施例の
中間のバネ定数を得ることができる。しかも、メンブラ
ン部１１の強度を大きくできる。FIG. 9 shows a case where only the central portion of the membrane portion 11 is formed as a thick portion 11b.
A ring-shaped thin portion 11c is formed between the contact portion 12 and the pressing portion 12. This makes it possible to obtain an intermediate spring constant between the first embodiment and the second embodiment. Moreover, the strength of the membrane section 11 can be increased.
【００６４】なお、厚肉部１１ｂの形状は、仮想線１１
ｄのように任意に変更でき、これにより任意にバネ定数
を変化させることができる。The shape of the thick portion 11b is
The spring constant can be arbitrarily changed as shown by d.
【００６５】図１０はオリフィス部６ａとメンブラン部
１１を別体に形成した例であり、オリフィス部６ａとメ
ンブラン部１１をそれぞれ別々に形成し、接合部６ｂに
おいて接着等により結合してある。FIG. 10 shows an example in which the orifice portion 6a and the membrane portion 11 are formed separately. The orifice portion 6a and the membrane portion 11 are separately formed, and are joined together by bonding or the like at the joining portion 6b.
【００６６】このようにすると、オリフィス部６ａとメ
ンブラン部１１がそれぞれ小型化するので形成が容易に
なるとともに、それぞれ異なる特性を有する材料、例え
ばオリフィス部６ａのみに硬い材料をを使用すれば、オ
リフィス通路９の変形防止を図ることができるなど、特
性が異なる任意の組み合わせを得ることができる。In this way, the orifice portion 6a and the membrane portion 11 are each reduced in size, so that they can be easily formed. In addition, if a material having different characteristics, for example, a hard material is used only for the orifice portion 6a, Arbitrary combinations having different characteristics, such as prevention of deformation of the passage 9, can be obtained.
【００６７】図１１はオリフィス部側を金属で構成し、
ゴム仕切壁６をメンブラン部１１のみとした例である。
この場合、メンブラン部１１の周囲にはビード状の把持
部１１ｅを一体化して形成し、これをリングプレート１
０の内周端１０ｂと仕切壁支持部材１４の内周側先端１
４ａとで挟持する。FIG. 11 shows a case where the orifice portion is made of metal,
This is an example in which the rubber partition wall 6 includes only the membrane section 11.
In this case, a bead-shaped gripping portion 11e is integrally formed around the membrane portion 11, and this is
0 and the inner peripheral end 1 of the partition wall support member 14
4a.
【００６８】また、外壁１４ｃの先端も水平に屈曲する
外フランジ１４ｊとし、これをリングプレート１０の外
周側と重ねて一体化してある。このようにすると、リン
グプレート１０と仕切壁支持部材１４で囲まれた空間を
オリフィス通路９に利用できる。しかも、メンブラン部
１１の弾性変形に影響されない通路断面積を維持でき
る。The outer wall 14c also has an outer flange 14j which is bent horizontally, and is integrated with the outer peripheral side of the ring plate 10 so as to overlap therewith. In this way, the space surrounded by the ring plate 10 and the partition wall support member 14 can be used for the orifice passage 9. In addition, the cross-sectional area of the passage that is not affected by the elastic deformation of the membrane portion 11 can be maintained.
【００６９】図１２は押し当て部１２の当接する相手側
である内壁１４ｂの側面に弾性層２０を設けたものであ
り、このようにすると、押し当て部１２の先端が接触す
る際の騒音を防止できる。FIG. 12 shows a structure in which the elastic layer 20 is provided on the side surface of the inner wall 14b which is the other side of the contact with the pressing portion 12, so that the noise generated when the tip of the pressing portion 12 comes into contact with the elastic layer 20 is reduced. Can be prevented.
【００７０】しかも、弾性層２０の厚さや素材並びに弾
性等を変化させることにより、押し当て部１２の変形に
変化を与え、その結果、メンブラン部１１のバネ定数変
化をコントロールすることもできる。Further, by changing the thickness, material, elasticity, and the like of the elastic layer 20, the deformation of the pressing portion 12 is changed, and as a result, the change in the spring constant of the membrane portion 11 can be controlled.
【００７１】なお、本願における弾性体の構成材料は、
ゴム又は合成樹脂からなる弾性力に富む成形材料であれ
ば、公知のものを適宜採用できる。The constituent material of the elastic body in the present application is as follows.
As long as the molding material is made of rubber or synthetic resin and has a high elasticity, a known material can be appropriately used.
【００７２】さらに、押し当て部１２は内壁１４ｂに当
接するばかりでなく、仕切壁支持部材１４の底部１４ｄ
（図１）へ当接するようにしてもよく、また、ハウジン
グ４の内壁面へ当接させることもできる。Further, the pressing portion 12 not only comes into contact with the inner wall 14b, but also the bottom portion 14d of the partition wall supporting member 14.
(FIG. 1), or may contact the inner wall surface of the housing 4.
【００７３】また、押し当て部１２を、メンブラン部１
１が弾性変形しない初期状態では内壁１４ｂに非接触と
し、所定の弾性変形時点で当接するように設定しておく
ことができ、このようにすれば、メンブラン部１１の弾
性定数変化を変曲点を有する階段状の曲線状にすること
ができる。The pressing section 12 is connected to the membrane section 1.
In the initial state in which the elastic member 1 is not elastically deformed, the inner wall 14b is not in contact with the inner wall 14b, and can be set so as to come into contact with the elastic elastic member at a predetermined elastic deformation time. Can be formed into a step-like curved shape.
【００７４】[0074]
【発明の効果】請求項１の発明によれば、仕切壁がメン
ブラン部を備えるので、このメンブラン部により、共振
によりオリフィス通路が見かけ上閉止した状態でも弾性
を失わず、入力振動に応じて弾性変形により振動を吸収
する。According to the first aspect of the present invention, since the partition wall is provided with the membrane portion, the membrane portion does not lose elasticity even when the orifice passage is apparently closed due to resonance, and elasticity according to input vibration. Absorbs vibration by deformation.
【００７５】このとき、メンブラン部と一体に形成され
た押し当て部が不動部に当接するので、この押し当て部
の変形によりメンブラン部のバネ特性に非線形特性を与
え、これにより流体共振効果をコントロールすることが
出来る。したがって入力変位に合わせた減衰特性コント
ロール又は大振動入力時の高減衰特性と小振動入力時の
低動バネ特性の両立が可能になる。At this time, since the pressing portion formed integrally with the membrane portion comes into contact with the immovable portion, the deformation of the pressing portion gives a non-linear characteristic to the spring characteristic of the membrane portion, thereby controlling the fluid resonance effect. You can do it. Therefore, it is possible to control the damping characteristics in accordance with the input displacement or to achieve both the high damping characteristics at the time of large vibration input and the low dynamic spring characteristics at the time of small vibration input.
【００７６】そのうえ、押し当て部をメンブラン部の初
期状態から不動部に当接させると、滑らかに変化する非
線形特性が得られ、逆に、初期状態で非接触にすれば階
段状に変化する非線形特性が得られるので、さまざまな
態様の非線形特性を持たせることができる。In addition, when the pressing portion is brought into contact with the immovable portion from the initial state of the membrane portion, a non-linear characteristic that changes smoothly is obtained. Conversely, if the pressing portion is made non-contact in the initial state, the non-linear characteristic changes stepwise. Since the characteristics can be obtained, it is possible to provide various forms of nonlinear characteristics.
【００７７】請求項４の発明によれば、押し当て部の当
接する不動部を仕切壁支持部材とするので、不動部の確
保が容易になる。According to the fourth aspect of the present invention, since the immovable portion in contact with the pressing portion is the partition wall support member, it is easy to secure the immovable portion.
【００７８】請求項５の発明によれば、仕切壁をメンブ
ラン部と押し当て部で形成し、仕切壁支持部材を利用し
てオリフィス部を形成したので、オリフィス通路の通路
断面積をより安定させることができる。According to the fifth aspect of the present invention, since the partition wall is formed by the membrane portion and the pressing portion, and the orifice portion is formed by using the partition wall support member, the passage sectional area of the orifice passage is further stabilized. be able to.
【００７９】請求項６の発明によれば、メンブラン部と
オリフィス部をそれぞれ特性の異なる材料で形成して両
者を接着等により連結したので、各部の成形を小型にで
き、かつ異種物性の材料を組み合わせが可能になる。According to the sixth aspect of the present invention, since the membrane portion and the orifice portion are formed of materials having different characteristics, and the two are connected by bonding or the like, the molding of each portion can be reduced in size, and a material having a different physical property can be used. Combination becomes possible.
【００８０】請求項７の発明によれば、メンブラン部と
オリフィス部を一体にして仕切壁を形成したので、仕切
壁は弾性変形機能とオリフィス機能とストッパー機能を
一体に発揮でき、しかも、構造が簡素になるとともにオ
リフィス部の形成も容易になり、かつ部品点数の削減が
可能になった。According to the seventh aspect of the present invention, since the partition wall is formed by integrating the membrane portion and the orifice portion, the partition wall can integrally exhibit the elastic deformation function, the orifice function, and the stopper function, and the structure is further improved. The simplification and the easy formation of the orifice portion have been made possible, and the number of parts can be reduced.
【００８１】請求項８の発明によれば、メンブラン部の
肉厚を薄肉にしたので、弾性変形が容易になり、バネ定
数を低くできる。According to the eighth aspect of the present invention, since the thickness of the membrane portion is reduced, elastic deformation is facilitated and the spring constant can be reduced.
【００８２】請求項９の発明によれば、オリフィス部と
一様の肉厚にして厚肉化したので、よりバネ定数を高く
できる。According to the ninth aspect of the present invention, the orifice portion and the orifice portion have a uniform thickness and are made thicker, so that the spring constant can be further increased.
【００８３】請求項１０の発明によれば、中央部を厚肉
部とし、この厚肉部とオリフィス部との間を薄肉部にし
たので、メンブラン部の中央部側を強化するとともに、
バネ定数を任意にコントロールできる。According to the tenth aspect of the present invention, the central portion is made to be a thick portion, and the portion between the thick portion and the orifice portion is made to be a thin portion.
The spring constant can be arbitrarily controlled.
【００８４】請求項１１の発明によれば、仕切壁支持部
材に設けたリング溝にオリフィス部を嵌合すると同時
に、この仕切壁支持部材の内壁を、オリフィス部とメン
ブラン部の間に形成した溝に入れたので、リング溝周囲
の壁でオリフィス部を囲むことにより、オリフィス部の
変形による通路断面積の変化を抑制できる。According to the eleventh aspect, the orifice portion is fitted in the ring groove provided in the partition wall support member, and the inner wall of the partition wall support member is formed between the orifice portion and the membrane portion. Since the orifice portion is surrounded by the wall around the ring groove, the change in the cross-sectional area of the passage due to the deformation of the orifice portion can be suppressed.
【００８５】請求項１２の発明によれば、押し当て部を
リング溝の内壁に押し当接させることにより、押し当て
部の受け止め構造を簡単に形成できる。According to the twelfth aspect of the invention, the structure for receiving the pressing portion can be easily formed by pressing the pressing portion against the inner wall of the ring groove.
【００８６】請求項１３の発明によれば、押し当て部の
先端を異なる角度の複数の傾斜面にしたので、メンブラ
ン部の弾性変形に応じてバネ定数が多段に変化する非線
形ばね特性を得ることができる。According to the thirteenth aspect of the present invention, since the tip of the pressing portion has a plurality of inclined surfaces having different angles, it is possible to obtain a non-linear spring characteristic in which the spring constant changes in multiple stages according to the elastic deformation of the membrane portion. Can be.
【００８７】請求項１４の発明によれば、不動部の押し
当て部が当接する部分に弾性部を設けたので、押し当て
部接触時の騒音を防止でき、かつ押し当て部の変形に変
化を与えることも可能になる。According to the fourteenth aspect of the present invention, since the elastic portion is provided at a portion of the immovable portion where the pressing portion comes into contact, noise at the time of contact with the pressing portion can be prevented, and the deformation of the pressing portion can be changed. It is also possible to give.
【００８８】請求項１５の発明によれば、押し当て部の
先端が主たる振動の入力方向と直交する方向から不動部
へ当接するため、押し当て部をメンブラン部の周辺部に
形成可能であり、不動部の確保を容易にするとともに、
最も弾性変形量が大きくなるメンブラン部中央における
弾性変形の支障にならないようにできる。According to the fifteenth aspect of the present invention, since the tip of the pressing portion abuts on the immovable portion in a direction orthogonal to the main vibration input direction, the pressing portion can be formed in the peripheral portion of the membrane portion. In addition to making it easy to secure fixed parts,
It is possible not to hinder the elastic deformation at the center of the membrane portion where the amount of elastic deformation is largest.
【００８９】請求項１６の発明によれば、不動部へ当接
する押し当て部の接触面積が、メンブラン部における弾
性変形量の増大に応じて増大するように変化するため、
メンブラン部のバネ定数を非線形にできる。According to the sixteenth aspect of the present invention, since the contact area of the pressing portion abutting on the immovable portion changes so as to increase with an increase in the amount of elastic deformation in the membrane portion,
The spring constant of the membrane can be made non-linear.
【図１】 第１実施例の要部拡大断面図FIG. 1 is an enlarged sectional view of a main part of a first embodiment.
【図２】 第１実施例に係るエンジンマウントの全断
面図FIG. 2 is an overall sectional view of the engine mount according to the first embodiment.
【図３】 変形例の要部拡大断面図FIG. 3 is an enlarged sectional view of a main part of a modified example.
【図４】 本発明のメンブラン部におけるバネ特性を
示すグラフFIG. 4 is a graph showing the spring characteristics of the membrane section of the present invention.
【図５】 本発明の減衰特性を示すグラフFIG. 5 is a graph showing attenuation characteristics of the present invention.
【図６】 本発明の動バネ特性を示すグラフFIG. 6 is a graph showing dynamic spring characteristics of the present invention.
【図７】 第１実施例の要部を一部破断して示す分解
斜視図FIG. 7 is an exploded perspective view showing a main part of the first embodiment, partially cut away;
【図８】 第２実施例の要部断面図FIG. 8 is a sectional view of a main part of the second embodiment.
【図９】 第３実施例の要部断面図FIG. 9 is a sectional view of a main part of the third embodiment.
【図１０】 第４実施例の要部断面図FIG. 10 is a sectional view of a main part of a fourth embodiment.
【図１１】 第５実施例の要部断面図FIG. 11 is a sectional view of a main part of a fifth embodiment.
【図１２】 第６実施例の要部断面図FIG. 12 is a sectional view of a main part of a sixth embodiment.
１：第１の連結部材、２：第２の連結部材、３：ゴム、
５：ダイアフラム、６：ゴム仕切壁、６ａ：オリフィス
部、７：第１室、８：第２室、９：オリフィス通路、１
１：メンブラン部、１２：押し当て部、１４：仕切壁支
持部材1: first connection member, 2: second connection member, 3: rubber,
5: diaphragm, 6: rubber partition, 6a: orifice section, 7: first chamber, 8: second chamber, 9: orifice passage, 1
1: membrane part, 12: pressing part, 14: partition wall support member
Claims (16)
付けられる第１の連結部材と、他方へ取付けられる第２
の連結部材と、これら両部材間に設けられる弾性体と、
この弾性体と、第１又は第２の連結部材によって形成さ
れる壁部の間に設けられる液室と、この液室を２室に区
割するとともに周囲を前記第１又は第２の連結部材のい
ずれか一方側へ固定される仕切壁と、この仕切壁によっ
て区画された２つの液室間を連結するオリフィスとを備
えた液封防振装置において、仕切壁は入力振動に応じて
変化する前記液室内の液圧変化によって弾性変形を可能
とするメンブラン部を備えるとともに、メンブラン部が
弾性変形するとき仕切壁が固定されている前記第１又は
第２の連結部材のいずれか側に対して不動である不動部
に当接する押し当て部をメンブラン部と一体に形成した
ことを特徴とする液封防振装置。1. A first connecting member attached to one of a vehicle body side and a vibration member side, and a second connecting member attached to the other side.
A connecting member, and an elastic body provided between these two members,
A liquid chamber provided between the elastic body and a wall formed by the first or second connecting member; and the liquid chamber divided into two chambers and the periphery of the first or second connecting member. In a liquid ring vibration isolator having a partition wall fixed to any one side of the above and an orifice connecting two liquid chambers defined by the partition wall, the partition wall changes according to input vibration. A membrane portion that allows elastic deformation by a change in the liquid pressure in the liquid chamber, and a partition wall is fixed when the membrane portion elastically deforms, with respect to either the first or second connection member. A liquid-sealed vibration isolator, wherein a pressing portion that abuts on an immovable portion is formed integrally with the membrane portion.
において、押し当て部が前記不動部と非接触になってい
ることを特徴とする請求項１の液封防振装置。2. The liquid ring vibration isolator according to claim 1, wherein the pressing portion is in non-contact with the immovable portion in an initial state of the membrane portion to which no vibration is input.
常時前記不動部へ当接していることを特徴とする請求項
１の液封防振装置。3. The liquid ring vibration isolator according to claim 1, wherein the pressing portion is always in contact with the immovable portion from the initial state of the membrane portion.
１又は第２の連結部材のいずれか一方へ固定された仕切
壁支持部材によって支持されるとともに、この仕切壁支
持部材を前記押し当て部が当接するための不動部とした
ことを特徴とする請求項１乃至３のいずれか記載の液封
防振装置。4. A partition wall surrounding the membrane portion is supported by a partition wall support member fixed to one of the first and second connecting members, and the partition wall support member is pressed against the partition wall support member. 4. The liquid ring vibration isolator according to claim 1, wherein said liquid sealing vibration isolator is an immovable portion for contacting said portion.
成されるとともに、仕切壁支持部材によって囲まれた空
間内にオリフィス通路を形成したことを特徴とする請求
項４の液封防振装置。5. The liquid-sealing vibration isolator according to claim 4, wherein said partition wall comprises a membrane portion and a pressing portion, and an orifice passage is formed in a space surrounded by said partition wall support member. apparatus.
なる特性を有する材料で形成し、これらメンブラン部と
オリフィス部を結合して仕切壁を形成したことを特徴と
する請求項１乃至３のいずれか記載の液封防振装置。6. The partition according to claim 1, wherein the membrane and the orifice are made of materials having different characteristics, and the membrane and the orifice are joined to form a partition wall. Liquid-vibration isolator.
とオリフィス部を備えることを特徴とする請求項１乃至
３のいずれか記載の液封防振装置。7. The liquid ring vibration isolator according to claim 1, wherein the partition wall has a membrane portion and an orifice portion formed integrally.
薄肉にしたことを特徴とする請求項６又は７の液封防振
装置。8. The liquid ring vibration isolator according to claim 6, wherein the thickness of the membrane portion is thinner than that of the orifice portion.
にして厚肉化したことを特徴とする請求項６又は７の液
封防振装置。9. The liquid ring vibration isolator according to claim 6, wherein the membrane portion has a uniform thickness with the orifice portion and is thickened.
の厚肉部とオリフィス部との間を薄肉部としたことを特
徴とする請求項６又は７の液封防振装置。10. The liquid ring vibration isolator according to claim 6, wherein a central portion of the membrane portion is a thick portion, and a portion between the thick portion and the orifice portion is a thin portion.
を嵌合するためのリング溝を設けるとともに、前記仕切
壁のオリフィス部とメンブラン部との間に溝を設け、前
記オリフィス部を前記仕切壁支持部材のリング溝内へ嵌
合するとともに、このリング溝を構成する仕切壁支持部
材の内壁を前記仕切壁のオリフィス部とメンブラン部と
の間に形成された溝内へ入れることを特徴とする請求項
６又は７の液封防振装置。11. The partition wall support member is provided with a ring groove for fitting the orifice portion, and a groove is provided between the orifice portion and the membrane portion of the partition wall, and the orifice portion is connected to the partition wall. The partition wall is fitted into the ring groove of the support member, and the inner wall of the partition wall support member forming the ring groove is inserted into a groove formed between the orifice portion and the membrane portion of the partition wall. The liquid-sealed vibration isolator according to claim 6.
することを特徴とする請求項１１の液封防振装置。12. The liquid ring vibration isolator according to claim 11, wherein a pressing portion abuts on an inner wall of said ring groove.
て部の先端に角度の異なる複数の傾斜面を形成したこと
を特徴とする請求項１乃至１２のいずれか記載の液封防
振装置。13. The liquid ring vibration isolator according to claim 1, wherein a plurality of inclined surfaces having different angles are formed at a tip of the pressing portion, which is a portion contacting the immovable portion. .
する部分に弾性部を設けたことを特徴とする請求項１乃
至１３のいずれか記載の液封防振装置。14. The liquid ring vibration isolator according to claim 1, wherein an elastic portion is provided in a portion of the immovable portion where the pressing portion abuts.
て部の先端が主たる振動の入力方向と直交する方向から
不動部へ当接することを特徴とする請求項１乃至１４の
いずれか記載の液封防振装置。15. The non-moving part according to claim 1, wherein a tip of the pressing part, which is a part contacting the non-moving part, comes into contact with the non-moving part from a direction orthogonal to a main vibration input direction. Liquid ring vibration isolator.
に応じて、前記不動部へ当接する押し当て部の接触面積
が増大するように変化することを特徴とする請求項１乃
至１５のいずれか記載の液封防振装置。16. The device according to claim 1, wherein the contact area of the pressing portion contacting the immovable portion changes so as to increase in accordance with an increase in the amount of elastic deformation in the membrane portion. Liquid-vibration isolator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24195697A JP3578605B2 (en) | 1997-08-22 | 1997-08-22 | Liquid ring vibration isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24195697A JP3578605B2 (en) | 1997-08-22 | 1997-08-22 | Liquid ring vibration isolator |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6120500A Division JP2799953B2 (en) | 1993-07-06 | 1994-05-10 | Liquid ring vibration isolator |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004137758A Division JP3813619B2 (en) | 2004-05-06 | 2004-05-06 | Liquid seal vibration isolator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1096449A true JPH1096449A (en) | 1998-04-14 |
| JP3578605B2 JP3578605B2 (en) | 2004-10-20 |
Family
ID=17082083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24195697A Expired - Fee Related JP3578605B2 (en) | 1997-08-22 | 1997-08-22 | Liquid ring vibration isolator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3578605B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003004085A (en) * | 2001-06-23 | 2003-01-08 | Yamashita Rubber Co Ltd | Liquid sealed vibration isolator |
| JP2008101719A (en) * | 2006-10-20 | 2008-05-01 | Tokai Rubber Ind Ltd | Fluid sealed vibration absorbing device |
| JP2009026054A (en) * | 2007-07-19 | 2009-02-05 | Koganei Corp | Pressure reducing valve |
| JP2009133358A (en) * | 2007-11-29 | 2009-06-18 | Toyo Tire & Rubber Co Ltd | Liquid-sealed vibration control device |
| JP2011241926A (en) * | 2010-05-19 | 2011-12-01 | Yamashita Rubber Co Ltd | Liquid-sealed vibration control device |
| KR101596713B1 (en) * | 2015-02-13 | 2016-02-24 | 현대자동차주식회사 | Hydraulic mount |
-
1997
- 1997-08-22 JP JP24195697A patent/JP3578605B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003004085A (en) * | 2001-06-23 | 2003-01-08 | Yamashita Rubber Co Ltd | Liquid sealed vibration isolator |
| JP4716616B2 (en) * | 2001-06-23 | 2011-07-06 | 山下ゴム株式会社 | Liquid seal vibration isolator |
| JP2008101719A (en) * | 2006-10-20 | 2008-05-01 | Tokai Rubber Ind Ltd | Fluid sealed vibration absorbing device |
| JP2009026054A (en) * | 2007-07-19 | 2009-02-05 | Koganei Corp | Pressure reducing valve |
| JP2009133358A (en) * | 2007-11-29 | 2009-06-18 | Toyo Tire & Rubber Co Ltd | Liquid-sealed vibration control device |
| JP2011241926A (en) * | 2010-05-19 | 2011-12-01 | Yamashita Rubber Co Ltd | Liquid-sealed vibration control device |
| KR101596713B1 (en) * | 2015-02-13 | 2016-02-24 | 현대자동차주식회사 | Hydraulic mount |
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| Publication number | Publication date |
|---|---|
| JP3578605B2 (en) | 2004-10-20 |
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