JP3009402B2 - Anti-vibration device - Google Patents
Anti-vibration deviceInfo
- Publication number
- JP3009402B2 JP3009402B2 JP8572688A JP8572688A JP3009402B2 JP 3009402 B2 JP3009402 B2 JP 3009402B2 JP 8572688 A JP8572688 A JP 8572688A JP 8572688 A JP8572688 A JP 8572688A JP 3009402 B2 JP3009402 B2 JP 3009402B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- liquid chamber
- inner cylinder
- elastic body
- vibration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
- F16F13/14—Units of the bushing type, i.e. loaded predominantly radially
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Devices Of Dampers And Springs (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は内筒と外筒との間に弾性体が掛け渡されるい
わゆるブツシユタイプの防振装置に関する。Description: BACKGROUND OF THE INVENTION The present invention relates to a so-called bush type vibration damping device in which an elastic body is bridged between an inner cylinder and an outer cylinder.
自動車のエンジンマウント、キヤブマウント、ブツシ
ユ等に用いられる防振装置として、内外筒間に弾性体が
掛け渡された構成が用いられている。この弾性体には内
部に一対の液室が設けられて制限通路で互いに連通さ
れ、振動発生時に一方の液室の液体が制限通路を通って
他方の液室へ至る場合の通過抵抗で振動が吸収されるよ
うになっている。2. Description of the Related Art As a vibration isolator used for an engine mount, a cap mount, a bush, and the like of an automobile, a configuration in which an elastic body is stretched between inner and outer cylinders is used. This elastic body is provided with a pair of liquid chambers inside and communicates with each other through a restriction passage. When vibration occurs, vibration is generated by the passage resistance when the liquid in one liquid chamber passes through the restriction passage to the other liquid chamber. It is designed to be absorbed.
この防振装置にあっては、内筒を介した反対側へ一対
の液室を各々設けることにより、振動時に効果的に液室
の液圧変化を生じさせることができるが、内外筒の相対
移動時に液室と内筒との間にある弾性体のひずみが大き
く、弾性体の長期間の耐久性が得られない原因になって
いる。In this vibration isolator, by providing a pair of liquid chambers on opposite sides of the inner cylinder, it is possible to effectively change the liquid pressure of the liquid chamber during vibration. The elastic body located between the liquid chamber and the inner cylinder at the time of movement has a large strain, which is a cause that the long-term durability of the elastic body cannot be obtained.
本発明は上記事実を考慮し、内筒を介した反対側にそ
れぞれ液室が設けられるブツシユタイプの防振装置であ
って、内外筒の相対移動時にも弾性体のひずみを少なく
して耐久性を向上することができる防振装置を得ること
が目的である。In consideration of the above facts, the present invention is a bush type vibration damping device in which liquid chambers are provided on opposite sides of the inner cylinder, and reduces the distortion of the elastic body even during relative movement of the inner and outer cylinders to improve durability. The object is to obtain a vibration isolator that can be improved.
本出願の請求項１に記載の発明は、振動部及び振動受
部へそれぞれ連結される内筒及び外筒と、この外筒の内
側へ取り付けられて、外筒と内筒との間へ配置される中
間筒と、この中間筒と内筒との間へ取り付けられて内筒
と外筒との相対移動を可能とする弾性体と、前記内筒の
半径方向片側であって、前記弾性体によって少なくとも
一部が囲まれる拡縮可能な第１の液室と、前記内筒の半
径方向の他の片側であって前記中間筒の外側に配置さ
れ、一部がダイアフラムによって構成されることにより
拡縮可能とされる第２の液室と、前記第１の液室と第２
の液室とを連通する制限通路と、前記弾性体に形成さ
れ、前記内筒と前記第１の液室との間に設けられて前記
内筒と外筒との相対移動で密着されることにより第１の
液室を圧縮する第１の空洞部と、前記弾性体に形成さ
れ、前記内筒と前記第２の液室との間であって、かつ前
記内筒と前記中間筒との間に配置され、内筒と外筒との
相対移動を可能とすると共に、外周全域に渡って前記中
間筒が位置する第２の空洞部と、を有することにより、
前記内筒と第１、第２液室との間には、それぞれ第１、
第２の空洞部が配置され、さらに、前記内筒と外筒との
相対移動であって、第２の空洞部が密着する方向の大き
な相対移動が中間筒によって制限されることを特徴とす
る。The invention according to claim 1 of the present application is directed to an inner cylinder and an outer cylinder that are respectively connected to a vibration part and a vibration receiving part, and is mounted inside the outer cylinder and disposed between the outer cylinder and the inner cylinder. An intermediate cylinder, an elastic body attached between the intermediate cylinder and the inner cylinder to enable relative movement between the inner cylinder and the outer cylinder, and an elastic body on one radial side of the inner cylinder, A first liquid chamber which is at least partially surrounded by the expandable and contractable liquid chamber, and which is disposed on the other side in the radial direction of the inner cylinder and outside the intermediate cylinder, and is partially expanded and contracted by a diaphragm Enabled second liquid chamber, said first liquid chamber and second liquid chamber
A restricting passage communicating with the first liquid chamber, the restricting passage communicating with the second liquid chamber, and being provided between the inner cylinder and the first liquid chamber so as to be in close contact with each other by relative movement between the inner cylinder and the outer cylinder. A first hollow portion for compressing a first liquid chamber, and the elastic member, between the inner cylinder and the second liquid chamber, and between the inner cylinder and the intermediate cylinder. A second hollow portion in which the intermediate cylinder is located over the entire outer periphery while allowing the relative movement between the inner cylinder and the outer cylinder,
First and second liquid chambers are provided between the inner cylinder and the first and second liquid chambers, respectively.
A second hollow portion is arranged, and a relative movement between the inner cylinder and the outer cylinder in the direction in which the second hollow portion is in close contact is limited by the intermediate cylinder. .
また、本出願の請求項２に係る発明は、前記請求項１
に記載の発明であって、前記中間筒には、その外側に配
置される第２の液室に面した部分が中間筒の径を縮小す
る方向に変形した凹部が設けられることを特徴とする。Further, the invention according to claim 2 of the present application is the invention according to claim 1.
Wherein the intermediate cylinder is provided with a concave portion in which a portion facing the second liquid chamber disposed outside thereof is deformed in a direction to reduce the diameter of the intermediate cylinder. .
このため本発明では、内筒と外筒とが大きく相対移動
しても、第１の空洞部が密着する迄は第１の液室へ圧縮
力が加わることがなく、弾性体の歪みが少ない。またこ
の第１の空洞部が密着する振動状態では弾性体同士の接
触による振動低減が可能であり、第２の空洞部が密着す
る振動状態では、この振動は中間筒の存在により第２の
液室にはこの振動が作用することはなくダイアフラムな
どの第２の液室の構成要素が保護される。For this reason, in the present invention, even if the inner cylinder and the outer cylinder move relatively to each other, no compressive force is applied to the first liquid chamber until the first hollow portion comes into close contact, and the elastic body has less distortion. . Further, in the vibration state in which the first cavity portion is in close contact, the vibration can be reduced by the contact between the elastic bodies, and in the vibration state in which the second cavity portion is in close contact, this vibration is generated by the presence of the intermediate cylinder. This vibration does not act on the chamber, and the components of the second liquid chamber such as the diaphragm are protected.
このように本発明では、内外筒の一方をエンジンへ、
他方を車体へ固着する場合に、エンジン重量が内外筒間
へ加わることにより空洞部が密着されるので、液室の側
壁を構成する弾性体の耐久性を向上できる。また本発明
はロールストッパのようにエンジンや車体の大きな振動
時に減衰効果を得る場合に用いてもよい。Thus, in the present invention, one of the inner and outer cylinders is
When the other is fixed to the vehicle body, the cavity is closely attached by adding the engine weight between the inner and outer cylinders, so that the durability of the elastic body constituting the side wall of the liquid chamber can be improved. Further, the present invention may be used in a case where a damping effect is obtained at the time of large vibration of an engine or a vehicle body like a roll stopper.
第１、２図には本発明の第１実施例に係る防振装置10
が示されている。この防振装置10では外筒12と内筒14と
が平行軸状態で配置され、一方が自動車の車体へ、他方
がエンジンへ連結されるようになっている。FIGS. 1 and 2 show a vibration isolator 10 according to a first embodiment of the present invention.
It is shown. In this vibration isolator 10, the outer cylinder 12 and the inner cylinder 14 are arranged in a parallel axis state, one of which is connected to the body of the automobile and the other of which is connected to the engine.
外筒12の内側には筒状の弾性膜16を介して中間筒18が
配置されている。この中間筒18は第４図に示される如く
薄肉形状であり、円周部の一部には矩形状の切欠20が形
成されると共に、反対側の円周部には内径を縮小する方
向に仕切部である凹部22が形成されている。従ってこの
中間筒18は外筒12の内側へ弾性膜16を介して配置される
と切欠20、凹部22部分を除いて弾性膜16を外筒12との間
に挟持することになる。この挟持された部分の弾性膜16
は外筒12又は中間筒18へ加硫接着することが好ましい。An intermediate cylinder 18 is arranged inside the outer cylinder 12 via a cylindrical elastic film 16. As shown in FIG. 4, the intermediate cylinder 18 has a thin-walled shape, a rectangular notch 20 is formed in a part of the circumferential part, and an inner circumferential part in the opposite circumferential part has a reduced inner diameter. A concave portion 22 serving as a partition is formed. Therefore, when the intermediate cylinder 18 is disposed inside the outer cylinder 12 via the elastic film 16, the elastic film 16 is sandwiched between the outer cylinder 12 except for the notch 20 and the concave portion 22. The elastic film 16 of the sandwiched portion
Is preferably bonded to the outer cylinder 12 or the intermediate cylinder 18 by vulcanization.
内筒14と中間筒18との間には弾性体24が掛け渡されて
いる。この弾性体24は凹部22との間に空洞部である貫通
切欠部26が形成され、また内筒14を介して貫通切欠部26
と反対側には外周部から切欠28が形成され、内部に水、
オイル、エチレングリコール等が封入された液室30を構
成している。従ってこの液室30はその外周が弾性膜16に
よって遮断されている。An elastic body 24 is stretched between the inner cylinder 14 and the intermediate cylinder 18. The elastic body 24 has a through cutout portion 26 which is a hollow portion formed between the elastic body 24 and the concave portion 22, and the through cutout portion 26 is formed through the inner cylinder 14.
Notch 28 is formed on the opposite side from the outer periphery, and water,
A liquid chamber 30 in which oil, ethylene glycol, and the like are sealed is formed. Therefore, the outer periphery of the liquid chamber 30 is blocked by the elastic film 16.
弾性体24には液室30と内筒14との間には貫通切欠部26
と略同形の空洞部である貫通切欠部31が形成されてい
る。従って内筒14が外筒12に対して第１図下方向へ相対
移動した場合に、この貫通切欠部31が密着された後に液
室30が圧縮力を受けることになり、液室30の側壁24Aは
これによって大きな圧縮力を受ける。The elastic body 24 has a notch 26 between the liquid chamber 30 and the inner cylinder 14.
A through cut-out portion 31 which is a hollow portion having substantially the same shape as that of FIG. Therefore, when the inner cylinder 14 moves relative to the outer cylinder 12 in the downward direction in FIG. 1, the liquid chamber 30 receives a compressive force after the through notch 31 comes into close contact, and the side wall of the liquid chamber 30 The 24A receives a large compressive force.
また中間筒18の凹部22と外筒12の内周との間に弾性膜
16の一部は外筒12と離れて自由状態で介在されるダイヤ
フラム16Aとされている。第２図に示される如くこのダ
イヤフラム16Aの軸方向両端は中間筒18と外筒12で挟持
されてこの弾性膜16と凹部22との間を密封した液室32と
している。Also, an elastic film is provided between the concave portion 22 of the intermediate cylinder 18 and the inner circumference of the outer cylinder 12.
Part of the diaphragm 16 is a diaphragm 16A that is separated from the outer cylinder 12 and interposed in a free state. As shown in FIG. 2, both ends in the axial direction of the diaphragm 16A are sandwiched between the intermediate cylinder 18 and the outer cylinder 12 to form a liquid chamber 32 in which the space between the elastic film 16 and the recess 22 is sealed.
液室30と32とは中間筒18の外周へ形成される有底溝34
によって互いに連通されている。従って有底溝34は第
１、２図に示される組付状態で弾性膜16との間に制限通
路36を構成している。The liquid chambers 30 and 32 have bottomed grooves 34 formed on the outer circumference of the intermediate cylinder 18.
Are in communication with each other. Accordingly, the bottomed groove 34 forms a restriction passage 36 between the bottomed groove 34 and the elastic membrane 16 in the assembled state shown in FIGS.
液室30に面した弾性体24には取付ブロツク40が貫通切
欠部31の近くに埋設されており、取付ボルト42によって
ストツパ44の中央部が固着されている。このストツパ44
は鉄等の金属のような硬材質が好ましいが、接触時の衝
撃をやわらげるために外周を弾性体で被ったり、また硬
質の弾性体で製作してもよい。またこのストツパ44の一
部は液室30の内周面に沿った形状とされ第１図下方向へ
移動した場合に液室30の内周面との当接用となってい
る。また拡径した両側先端部44Aは液室30の内周との間
に幅狭部30Aを形成し、この部分で高周波振動時に液柱
共振を生じさせ、低動ばね状態を維持させるようになっ
ている。A mounting block 40 is embedded in the elastic body 24 facing the liquid chamber 30 near the through cutout 31, and a central portion of the stopper 44 is fixed by a mounting bolt 42. This stop 44
Is preferably a hard material such as a metal such as iron. However, the outer periphery may be covered with an elastic body or a hard elastic body may be used to relieve an impact at the time of contact. A part of the stopper 44 has a shape along the inner peripheral surface of the liquid chamber 30 and is used for abutting on the inner peripheral surface of the liquid chamber 30 when it moves downward in FIG. In addition, the enlarged both-ends 44A form a narrow portion 30A between the inner periphery of the liquid chamber 30 and a liquid column resonance at the time of high-frequency vibration to maintain a low dynamic spring state. ing.
なお、外筒12にはダイヤフラム16Aに対応した部分に
切欠12Aが形成されてダイヤフラム16Aの変形を容易にし
ている。しかしこの切欠12Aを設けることなく、ダイヤ
フラム16Aを外筒12の内側に対応させてもよい。Note that a cutout 12A is formed in the outer cylinder 12 at a portion corresponding to the diaphragm 16A to facilitate deformation of the diaphragm 16A. However, the diaphragm 16A may correspond to the inside of the outer cylinder 12 without providing the notch 12A.
次に本実施例の作用を説明する。 Next, the operation of the present embodiment will be described.
一例として内筒14を自動車のエンジンへ、外筒12を車
体へ連結支持させる。エンジンの重量が内筒14へ加わる
と貫通切欠部31が密着する。この密着は貫通切欠部31の
全域に亘って行われる場合に限らず、内筒14と取付ブロ
ツク40との間に対応する中央部等の一部のみであっても
よい。As an example, the inner cylinder 14 is connected to and supported by the engine of the automobile, and the outer cylinder 12 is supported by the vehicle body. When the weight of the engine is applied to the inner cylinder 14, the cut-out portion 31 comes into close contact. This close contact is not limited to being performed over the entire area of the through cutout 31, but may be only a part of the central portion or the like corresponding to between the inner cylinder 14 and the mounting block 40.
エンジンの振動は弾性体24の内部摩擦によって吸収さ
れる他、液室30、32内の液圧が変動し、液体が制限通路
36を通って互いに他方へ移動する場合の抵抗で振動が吸
収される。この場合、液室32の圧力が上昇するとダイヤ
フラム16Aが弾性変形して液室32の拡張を可能とする。In addition to the vibration of the engine being absorbed by the internal friction of the elastic body 24, the fluid pressure in the fluid chambers 30 and 32 fluctuates, and the
Vibration is absorbed by the resistance when moving to each other through 36. In this case, when the pressure in the liquid chamber 32 increases, the diaphragm 16A is elastically deformed, and the liquid chamber 32 can be expanded.
振動の振幅が大きくなった場合には内筒14の周囲に配
置される弾性体24の一部が凹部22と当接することにな
り、これによって外筒12と内筒14との相対移動量が制限
されるが、弾性体24はこの相対移動時にダイヤフラム16
Aと当接することがないので、ダイヤフラム16Aの耐久性
が損なわれることはない。When the amplitude of the vibration increases, a part of the elastic body 24 arranged around the inner cylinder 14 comes into contact with the concave portion 22, thereby reducing the relative movement amount between the outer cylinder 12 and the inner cylinder 14. Although limited, the elastic body 24 moves the diaphragm 16 during this relative movement.
Since there is no contact with A, the durability of the diaphragm 16A is not impaired.
また液室30の側壁24Aは貫通切欠部31が無い場合に比
べて応力が著しく小さいので、耐久性が向上する。Further, since the side wall 24A of the liquid chamber 30 has significantly less stress than the case where there is no through cutout 31, the durability is improved.
なお中間筒18と外筒12との密封状態が維持されるので
あれば、ダイヤフラム16Aを除いた弾性膜16の他の部分
は省略可能である。If the sealed state between the intermediate cylinder 18 and the outer cylinder 12 is maintained, other parts of the elastic film 16 except for the diaphragm 16A can be omitted.
振動が高周波になった場合には制限通路36が目詰まり
状態となるが、ストッパ44が両側先端部44Aと液室30の
内周との間の液体に幅狭部を通して上下の流体を攪拌さ
せると共に液柱共振を生じさせるので低動ばね状態が維
持される。ストツパ44の幅寸法（第１図左右方向寸法）
は取付ブロツク40の幅寸法よりも大きいのが好ましい。When the vibration becomes high frequency, the restriction passage 36 becomes clogged, but the stopper 44 causes the liquid between the both end portions 44A and the inner periphery of the liquid chamber 30 to stir the upper and lower fluids through the narrow portion. At the same time, the liquid column resonance is generated, so that the low dynamic spring state is maintained. Width dimension of stopper 44 (left-right dimension in Fig. 1)
Is preferably larger than the width dimension of the mounting block 40.
次に第５図には本発明の第２実施例に用いる中間等18
Aが示されている。この中間等18Aに形成される有底溝34
Aは前記実施例と異なりその軸心が略Ｕ字状に屈曲さ
れ、これよって一対の液室を連通する制限通路は屈曲し
た長い軸線を有するようになっている。これによってよ
り大きな減衰効果を得ることができる。Next, FIG. 5 shows an intermediate part 18 used in the second embodiment of the present invention.
A is shown. The bottomed groove 34 formed in the middle 18A etc.
A is different from the above embodiment in that its axis is bent in a substantially U-shape, so that the restriction passage connecting the pair of liquid chambers has a bent long axis. As a result, a greater damping effect can be obtained.
本発明は上記の構成としたので、液室を構成する弾性
体の耐久性を向上することができる優れた効果を有す
る。Since the present invention is configured as described above, it has an excellent effect of improving the durability of the elastic body constituting the liquid chamber.
第１図は本発明の第１実施例に係る防振装置を示す第２
図Ｉ−Ｉ線断面図に相当する断面図、第２図は第１図の
II−II線断面図、第３図は制限通路を示す第１図のIII
−III線断面図、第４図は第１実施例における中間筒を
示す斜視図、第５図は第２実施例に用いる中間筒を示す
斜視図である。 10……防振装置、 24……弾性体、 26……貫通切欠部、 30……液室、 31……貫通切欠部、 32……液室、 36……制限通路。FIG. 1 shows a second embodiment of the vibration isolator according to the first embodiment of the present invention.
FIG. 2 is a sectional view corresponding to the sectional view taken along the line II of FIG. 1, and FIG.
FIG. 3 is a sectional view taken along the line II-II, and FIG.
FIG. 4 is a perspective view showing the intermediate cylinder in the first embodiment, and FIG. 5 is a perspective view showing the intermediate cylinder used in the second embodiment. 10: Vibration isolator, 24: Elastic body, 26: Notch through, 30: Liquid chamber, 31: Notch, 32: Liquid chamber, 36: Restricted passage.
フロントページの続き (56)参考文献 特開 昭64−3343（ＪＰ，Ａ) 特開 昭62−292941（ＪＰ，Ａ) 実開 平１−92542（ＪＰ，Ｕ) 実開 平１−121739（ＪＰ，Ｕ) 実開 昭61−141839（ＪＰ，Ｕ) 実開 平１−106650（ＪＰ，Ｕ) 実公 平１−31796（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.7，ＤＢ名) F16F 13/00 Continuation of front page (56) References JP-A-64-3343 (JP, A) JP-A-62-292941 (JP, A) JP-A-1-92542 (JP, U) JP-A-1-121739 (JP , U) Japanese Utility Model Showa 61-141839 (JP, U) Japanese Utility Model Utility Model 1-106650 (JP, U) Japanese Utility Model Utility Model 1-31796 (JP, Y2) (58) Fields surveyed (Int. Cl. 7 , DB Name) F16F 13/00
Claims (2)
内筒及び外筒と、 この外筒の内側へ取り付けられて、外筒と内筒との間へ
配置される中間筒と、 この中間筒と内筒との間へ取り付けられて内筒と外筒と
の相対移動を可能とする弾性体と、 前記内筒の半径方向片側であって、前記弾性体によって
少なくとも一部が囲まれる拡縮可能な第１の液室と、 前記内筒の半径方向の他の片側であって前記中間筒の外
側に配置され、一部がダイアフラムによって構成される
ことにより拡縮可能とされる第２の液室と、 前記第１の液室と第２の液室とを連通する制限通路と、 前記弾性体に形成され、前記内筒と前記第１の液室との
間に設けられて前記内筒と外筒との相対移動で密着され
ることにより第１の液室を圧縮する第１の空洞部と、 前記弾性体に形成され、前記内筒と前記第２の液室との
間であって、かつ前記内筒と前記中間筒との間に配置さ
れ、内筒と外筒との相対移動を可能とすると共に、外周
全域に渡って前記中間筒が位置する第２の空洞部と、 を有することにより、前記内筒と第１、第２液室との間
には、それぞれ第１、第２の空洞部が配置され、さら
に、 前記内筒と外筒との相対移動であって、第２の空洞部が
密着する方向の大きな相対移動が中間筒によって制限さ
れることを特徴とする防振装置。An inner cylinder and an outer cylinder respectively connected to the vibrating part and the vibration receiving part; an intermediate cylinder mounted inside the outer cylinder and disposed between the outer cylinder and the inner cylinder; An elastic body attached between the intermediate cylinder and the inner cylinder to enable relative movement between the inner cylinder and the outer cylinder; and at least one part of the inner cylinder in a radial direction, at least a part of which is surrounded by the elastic body. A first liquid chamber that can be expanded and contracted, and a second liquid chamber that is arranged on the other side in the radial direction of the inner cylinder and outside the intermediate cylinder and partially expandable and contractable by being constituted by a diaphragm. A liquid chamber; a restriction passage communicating the first liquid chamber and the second liquid chamber; and a restriction passage formed in the elastic body and provided between the inner cylinder and the first liquid chamber. A first hollow portion for compressing the first liquid chamber by being brought into close contact by relative movement between the cylinder and the outer cylinder; And is disposed between the inner cylinder and the second liquid chamber and between the inner cylinder and the intermediate cylinder to enable relative movement between the inner cylinder and the outer cylinder. And a second cavity in which the intermediate cylinder is located over the entire outer periphery, and a first cavity and a second cavity are provided between the inner cylinder and the first and second liquid chambers, respectively. A vibration-absorbing device, wherein a large relative movement between the inner cylinder and the outer cylinder in the direction in which the second hollow portion is in close contact is limited by the intermediate cylinder.
２の液室に面した部分が中間筒の径を縮小する方向に変
形した凹部が設けられる前記特許請求の範囲第１項に記
載の防振装置。2. A method according to claim 1, wherein said intermediate cylinder is provided with a concave portion in which a portion facing the second liquid chamber disposed outside thereof is deformed in a direction to reduce the diameter of the intermediate cylinder. 4. The vibration isolator according to 4.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8572688A JP3009402B2 (en) | 1988-04-07 | 1988-04-07 | Anti-vibration device |
| DE19893910570 DE3910570A1 (en) | 1988-04-07 | 1989-04-01 | Vibration absorber |
| US07/821,852 US5280885A (en) | 1988-04-07 | 1992-01-14 | Vibration isolating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8572688A JP3009402B2 (en) | 1988-04-07 | 1988-04-07 | Anti-vibration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01261529A JPH01261529A (en) | 1989-10-18 |
| JP3009402B2 true JP3009402B2 (en) | 2000-02-14 |
Family
ID=13866851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8572688A Expired - Fee Related JP3009402B2 (en) | 1988-04-07 | 1988-04-07 | Anti-vibration device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3009402B2 (en) |
| DE (1) | DE3910570A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2848525B2 (en) * | 1987-10-28 | 1999-01-20 | 株式会社ブリヂストン | Anti-vibration device |
| JPH0276240U (en) * | 1988-11-30 | 1990-06-12 | ||
| ES2053041T3 (en) * | 1989-09-14 | 1994-07-16 | Lemfoerder Metallwaren Ag | SPRING HOSE RUBBER WITH HYDRAULIC DAMPING FOR ACCOMMODATION IN AUTOMOTIVE VEHICLES. |
| FR2656907B1 (en) | 1990-01-09 | 1994-07-01 | Hutchinson | IMPROVEMENTS TO HYDRAULIC ANTI-VIBRATION SLEEVES. |
| DE4026370A1 (en) * | 1990-08-21 | 1992-03-05 | Freudenberg Carl Fa | Tubular rubber spring with two supports - has rubber piece containing two fluid-filled compartments, with hole and stop pad containing release pocket |
| DE4332480C2 (en) * | 1993-09-24 | 1996-02-15 | Boge Gmbh | Hydraulically damping rubber bearing |
| FR2712652B1 (en) * | 1993-11-16 | 1996-01-26 | Hutchinson | Improvements made to hydraulic anti-vibration sleeves. |
| FR2713731B1 (en) * | 1993-12-09 | 1996-02-09 | Hutchinson | Improvement to hydraulic anti-vibration supports and their manufacturing processes. |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0172700B2 (en) * | 1984-08-07 | 1992-04-22 | Avon Industrial Polymers Limited | Hydraulically damped mounting device |
| JPS63145837A (en) * | 1986-07-04 | 1988-06-17 | Tokai Rubber Ind Ltd | Cylindrical vibro-isolating support of fluid sealed-in type |
-
1988
- 1988-04-07 JP JP8572688A patent/JP3009402B2/en not_active Expired - Fee Related
-
1989
- 1989-04-01 DE DE19893910570 patent/DE3910570A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| DE3910570A1 (en) | 1989-10-19 |
| JPH01261529A (en) | 1989-10-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |