JP3472883B2 - Liquid-filled anti-vibration mount - Google Patents

Liquid-filled anti-vibration mount

Info

Publication number
JP3472883B2
JP3472883B2 JP18066093A JP18066093A JP3472883B2 JP 3472883 B2 JP3472883 B2 JP 3472883B2 JP 18066093 A JP18066093 A JP 18066093A JP 18066093 A JP18066093 A JP 18066093A JP 3472883 B2 JP3472883 B2 JP 3472883B2
Authority
JP
Japan
Prior art keywords
vibration
base
liquid
mount
metal core
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
Application number
JP18066093A
Other languages
Japanese (ja)
Other versions
JPH0777234A (en
Inventor
誠一 濱手
幸夫 高島
政嗣 高岡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyo Tire Corp
Original Assignee
Toyo Tire and Rubber Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyo Tire and Rubber Co Ltd filed Critical Toyo Tire and Rubber Co Ltd
Priority to JP18066093A priority Critical patent/JP3472883B2/en
Publication of JPH0777234A publication Critical patent/JPH0777234A/en
Application granted granted Critical
Publication of JP3472883B2 publication Critical patent/JP3472883B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Combined Devices Of Dampers And Springs (AREA)

Description

【発明の詳細な説明】 【0001】 【産業上の利用分野】本発明は車両のエンジンを防振的
に支承するのに用いる液封入式防振マウントに関するも
のである。 【0002】 【従来の技術】振動に対する減衰機能は容積可変の室内
に封入した液体により坦持させ、一方、振動絶縁性は液
体封入のための室壁を形成するゴム弾性体からなる防振
基体によって坦持させ、低周波振動に対する減衰係数が
大きく、かつ高周波振動に高い絶縁性を有する特性を持
つ液封入式防振マウントは従来から知られており、例え
ば特開昭61−45130号公報によって開示されてい
る。 【0003】かかる防振マウントは、筒状本体金具の一
方の開口部にゴム弾性体からなる防振基体を、他方の開
口部にダイヤフラムを、夫々シール状態に取着せしめて
液室を形成すると共に、該液室をオリフィスを備えた仕
切板にて分割してなる構造を有している。そして防振基
体とブラケット上部の椀状部の一部とには、エンジン又
は車体取付用の取付部材が夫々一体に固定して設けられ
ている。 【0004】 【発明が解決しようとする課題】ところで近年に至り、
車両のエンジン等が大型化する傾向があり、それらの重
量が増大した場合、これを支持する防振マウントの負荷
も当然増大し、特に上記エンジンの振動をゴム弾性材が
直接的に受ける防振基体での負担が著しい。即ち、上記
従来の防振マウントにおいては、防振基体に対し、大き
な負荷を伴う大振幅の振動が長期に亘って繰り返し激し
く加えられると、防振基体の中心付近に上記負荷による
変形が集中することから、この部分に裂け等の傷が生じ
ることが考えられ、そのために防振基体の肉厚を大きく
したり、防振マウントを大型化したりする必要があっ
た。 【0005】本発明は叙上の如き実状に対処し、上記防
振基体の局所的に変形し易い部分に、この変形を抑制す
る制御板を設けることにより、上記不都合の解消を図る
ことを目的とするものである。 【0006】 【課題を解決するための手段】即ち、上記目的に適合す
る本発明の液封入式防振マウントの特徴は、筒状本体金
具の下部開口部にゴム弾性体からなる防振基体を、上部
開口部にゴム膜からなるダイヤフラムを、夫々シール状
態に取着せしめて液室を形成する一方、該液室をオリフ
ィスを備える仕切板にて分割し、かつ上記防振基体に芯
金具を支軸状に取着せしめて一体化してなる液封入式防
振マウントにおいて、上記芯金具を液室内まで貫設する
と共に、上記防振基体上面を芯金具に近づくにつれ高く
なるよう形成せしめ、かつ上記芯金具の防振基体上面と
の境界付近に、半径外方向に所要幅をもって拡がり、上
記防振基体の動きを一部制限するフランジ状の抑制板を
固設せしめたところにあり、特に上記抑制板を、外周側
が下降する傾斜を具備せしめて形成することが肝要で、
これにより防振基体の上面が芯金具に近づくにつれて高
くなる、すなわち防振基体の上面が傾いているために抑
制板と防振基体の上面との間のすきま挟み角を適当な値
として防振基体の中心部分に裂けなどの傷の発生するの
を確実に防止することができる。なお、ここでいう上下
は便宜上、単にこれを用いたものにすぎない。 【0007】 【作用】上記本発明の防振マウントにおいては、大負荷
の振動によって前記防振基体の芯金具が大きく上下動す
るようなことが激しく繰り返されたとしても、損傷を受
けやすい防振基体の中心付近が、前記抑制板によって変
形が制限され、これによって長期に亘る使用においても
防振基体の上記中心付近の局所的な損傷を防止し、マウ
ントの耐久性を向上させることが可能である。 【0008】 【実施例】以下、さらに添付図面を参照して、本発明の
実施例を説明する。 【0009】図1は本発明実施例の液封入式防振マウン
トを示す一部断面正面図であり、この防振マウントの主
要部Aは、図示の如く、筒状本体金具1の下部開口部2
にゴム弾性体からなる防振基体3を、上部開口部4にゴ
ム膜からなるダイヤフラム5を、夫々シール状態に取着
せしめて液室6を形成する一方、該液室6を、組立状態
でオリフィス7を備える仕切板8にて、相互に連通する
2つの液室6a,6bに分割し、かつ上記防振基体3に
芯金具9を支軸状に加硫接着により一体化した構成を有
している。 【0010】また、このマウントの主要部Aは、ブラケ
ット上部の椀状部12のステイ10と共に車両のボディ
側に固定されるブラケット11に対し、該ブラケット上
部の椀状部12に本体金具1の下部を圧入することのみ
によって連着されている。そして、前記芯金具9は上記
ブラケット11の中まで垂下して、同図に示すように、
ストッパーゴム13を上下に有するエンジン側ステイ1
4にボルトBを介し固定されている。なお、同図に示す
15は樹脂製のダイヤフラムカバーである。 【0011】一方、本発明は、上記の如き防振マウント
において、上記芯金具9を液室6b内まで貫設すると共
に、上記防振基体3の上面3aを芯金具9に近づくにつ
れ高くなるよう形成せしめている。そして、上記芯金具
9の防振基体上面3aとの境界に、半径方向に所要幅を
もって拡がり、上記防振基体の動きを一部制限するフラ
ンジ状の抑制板16を、芯金具9の上部をかしめること
により該金具9と一体に固定している。 【0012】上記抑制板16は、これ自体はリング状の
金属板からなり、芯金具9から放射方向に出る本体部分
Lは、外周側が下降した傾斜を有して形成されている。
また、この抑制板16の本体部分Lの幅は、約5〜15
mm程度が好適であり、さらにその傾斜角度は、水平か
ら下方約0〜45°程度に傾斜することが適当である。
なお、下降した傾斜を有して形成されたことは防振基体
の上面が芯金具に近づくにつれて高くなる、すなわち、
傾いているのに呼応し、抑制板と防振基体の上面との間
のすきま挟み角を適当な値とすることができ、防振基体
の中心付近に負荷による変形が集中し、この部分に裂け
等の傷が生じるのを防止する上に有利である。 【0013】しかして、上記構成を有する本発明実施例
の液封入式防振マウントは、前述の如く、ブラケット1
1とステイ10とを介して本体金具1をボディ側に、エ
ンジン側ステイ14を介して芯金具9をエンジン側に、
夫々固定して使用する。この場合、エンジンは防振マウ
ントに対し吊り下げられた状態で支持されて、前記した
液室6a,6bの相互の液流動効果や防振基体3の防振
効果により、一般の防振マウントと同様に効果的にそれ
自体の振動が吸収される。 【0014】また、車両走行時等に生じる路面からの大
きな振動に対しては、上記エンジン側ステイ14のスト
ッパーゴム13により、上記芯金具9の上下動を緩衝的
に規制する。 【0015】そして、本発明の防振マウントでは、上記
振動を受けるに際し、大負荷等によって上記エンジン側
芯金具9が繰り返し大きく上下動するようなことが激し
く繰り返されたとしても、従来、裂けの発生等の損傷を
受けやすかった防振基体3の上部中心付近が、前記した
抑制板16によってその変形が制限されることから、長
期に亘る使用においても、また同時にエンジン等の重量
が増大したとしても、防振基体の上記局所的な損傷を防
止し、耐久性の向上を図ることが可能である。 【0016】 【発明の効果】以上説明したように、本発明の液封入式
防振マウントは、立設した筒状本体金具下部の防振基体
に芯金具を貫通一体化せしめると共に、この防振基体の
上面を芯金具に近づくにつれ高くなるよう形成せしめ、
かつ上記芯金具の防振基体上面との境界付近に、半径外
方向に所要幅をもって拡がり、外周側が下降した傾斜を
有し形成された、上記防振基体の動きを一部制限するフ
ランジ状の抑制板を固設せしめたものであり、上記抑制
板を固設せしめたことによって液封入の可逆流動等によ
ってエンジンを防振的に支承する一方、エンジンが外的
振動により上下動し、これを支持する上記芯金具が繰り
返し激しく移動したとしても、従来、裂けの発生等が起
きやすかった防振基体の上部中心付近が、上記抑制板に
よってその変形が制限されることから、長期に亘る使用
においても、また同時に上記エンジン等の重量が増大し
たとしても、上記防振基体の上記局所的な損傷を確実に
防止し、防振マウントの耐久性を向上させるとの顕著な
効果を奏するものである。殊に本発明において抑制板を
芯金具の防振基体上面との境界付近に設けており、負荷
がかかった状態で抑制板の芯金具近くでは抑制板と防振
基体とがほぼ接触し、これによって防振基体に接触圧を
与え、この部分の裂け等の傷の発生を防止することがで
き、更に抑制板の外周側を傾斜を有し形成したことによ
り防振基体上面の傾きに呼応して抑制板と防振基体の上
面とのすきま挟み角を適当な値とし、上記裂け発生の防
止を助長することができる利点を有する。
Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid-filled anti-vibration mount for supporting a vehicle engine in a vibration-proof manner. 2. Description of the Related Art A vibration damping function is carried by a liquid sealed in a chamber having a variable volume, while a vibration insulating base is made of a rubber elastic material forming a chamber wall for liquid sealing. A liquid-filled anti-vibration mount having a characteristic of having a large damping coefficient for low-frequency vibration and a high insulating property against high-frequency vibration has been conventionally known, for example, according to Japanese Patent Application Laid-Open No. 61-45130. It has been disclosed. In such a vibration-proof mount, a liquid chamber is formed by attaching a vibration-proof base made of a rubber elastic body to one opening of a cylindrical main body fitting and a diaphragm to the other opening in a sealed state. In addition, it has a structure in which the liquid chamber is divided by a partition plate having an orifice. A mounting member for mounting the engine or the vehicle body is integrally fixed to the vibration isolating base and a part of the bowl-shaped portion above the bracket. [0004] By the way, in recent years,
When the engine of a vehicle tends to be large and its weight increases, the load of a vibration isolating mount for supporting the engine naturally increases, and especially, the rubber elastic material receives the vibration of the engine directly. The burden on the substrate is significant. That is, in the above-described conventional anti-vibration mount, when a large-amplitude vibration with a large load is repeatedly and intensely applied to the anti-vibration base for a long period of time, the deformation due to the load concentrates near the center of the anti-vibration base. Therefore, it is conceivable that a damage such as a tear may occur in this portion. Therefore, it is necessary to increase the thickness of the vibration isolating base or increase the size of the vibration isolating mount. An object of the present invention is to solve the above-described problems by providing a control plate for suppressing the deformation in a portion of the vibration-proof substrate that is locally deformable, in response to the actual situation described above. It is assumed that. That is, the liquid-filled anti-vibration mount of the present invention that meets the above-mentioned object is characterized in that the anti-vibration base made of a rubber elastic body is provided at the lower opening of the cylindrical main body fitting. A diaphragm made of a rubber film is attached to the upper opening in a sealed state to form a liquid chamber, while the liquid chamber is divided by a partition plate having an orifice, and a metal core is attached to the vibration-proof base. In a liquid-filled anti-vibration mount that is attached and integrated in a support shaft shape, the core is penetrated into the liquid chamber, and the upper surface of the vibration-isolating base is formed to be higher as approaching the core, and In the vicinity of the boundary of the metal core with the upper surface of the vibration isolating base, a flange-shaped suppressing plate that extends with a required width in a radially outward direction and partially restricts the movement of the vibration isolating base is fixed. Suppress plate, outer side down It is important to form it with a descending slope,
As a result, the upper surface of the vibration isolating substrate approaches
In other words, because the upper surface of the vibration isolating substrate is tilted.
Set the clearance between the damping plate and the upper surface of the vibration-proof base to a suitable value.
As a result, the center of the vibration isolating substrate
Can be reliably prevented. It should be noted that the upper and lower portions used herein are merely used for convenience. In the vibration isolating mount of the present invention, even if the core metal of the vibration isolating base moves up and down greatly due to the vibration of a large load, the vibration isolating mount is easily damaged. Deformation near the center of the base is limited by the suppression plate, thereby preventing local damage near the center of the vibration isolating base even during long-term use, and improving the durability of the mount. is there. Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a partial cross-sectional front view showing a liquid-filled anti-vibration mount according to an embodiment of the present invention. As shown, a main portion A of the anti-vibration mount has a lower opening of a cylindrical main body fitting 1 as shown in FIG. 2
A vibration isolating base 3 made of a rubber elastic body and a diaphragm 5 made of a rubber film in an upper opening 4 are attached in a sealed state, respectively, to form a liquid chamber 6, while the liquid chamber 6 is assembled in an assembled state. A partition plate 8 having an orifice 7 is divided into two liquid chambers 6a and 6b which communicate with each other, and a core metal 9 is integrated with the vibration-proof base 3 in a support shaft shape by vulcanization bonding. are doing. The main part A of the mount is attached to the bracket 11 fixed to the body of the vehicle together with the stay 10 of the bowl-shaped part 12 on the upper part of the bracket. It is connected only by press-fitting the lower part. Then, the metal core 9 is hung down into the bracket 11, and as shown in FIG.
Engine-side stay 1 having stopper rubber 13 above and below
4 is fixed via bolts B. Incidentally, reference numeral 15 shown in the figure denotes a resin diaphragm cover. On the other hand, according to the present invention, in the above-described anti-vibration mount, the metal core 9 is provided so as to penetrate into the liquid chamber 6b, and the upper surface 3a of the vibration-proof base 3 is raised as approaching the metal core 9. It is forming. Then, a flange-shaped suppressing plate 16 which spreads with a required width in the radial direction at a boundary between the metal core 9 and the upper surface 3a of the vibration isolating base and partially restricts the movement of the vibration isolating base, It is fixed integrally with the metal fitting 9 by swaging. The suppression plate 16 itself is a ring-shaped metal plate, and a main body portion L protruding radially from the metal core 9 is formed to have a slope whose outer peripheral side is lowered.
The width of the main body portion L of the suppression plate 16 is about 5 to 15
mm is preferable, and the angle of inclination is preferably about 0 to 45 ° below horizontal.
It should be noted that it was formed with a lowered inclination
Becomes higher as the top surface approaches the metal core, that is,
In response to the inclination, between the suppression plate and the upper surface of the vibration isolating base
Can be set to an appropriate value.
Deformation due to load concentrates near the center of the
This is advantageous in preventing the occurrence of such scratches. As described above, the liquid-filled anti-vibration mount according to the embodiment of the present invention having the above-described structure is provided with the bracket 1 as described above.
1 and the stay 10, the main body 1 is on the body side, and the core metal 9 is on the engine side via the engine side stay 14.
Use each fixed. In this case, the engine is supported in a suspended state with respect to the anti-vibration mount. Due to the mutual liquid flow effect of the liquid chambers 6a and 6b and the anti-vibration effect of the anti-vibration base 3, the engine is connected to a general anti-vibration mount. Similarly, its own vibrations are effectively absorbed. In addition, against a large vibration from the road surface generated when the vehicle is running or the like, the up-and-down movement of the metal core 9 is cushioned by the stopper rubber 13 of the engine-side stay 14. In the anti-vibration mount of the present invention, even if the engine-side metal fitting 9 is repeatedly violently moved up and down due to a large load or the like upon receiving the vibration, it is conventionally difficult to break. Since the deformation near the center of the upper portion of the vibration-isolating base 3 which is susceptible to damages such as generation is limited by the above-described suppression plate 16, even if the weight of the engine or the like increases at the same time even in long-term use. In addition, it is possible to prevent the above-described local damage of the vibration-proof substrate and improve the durability. As described above, the liquid-filled anti-vibration mount of the present invention allows the core metal to penetrate and integrate with the anti-vibration base below the upright cylindrical main body metal fitting. The upper surface of the base is formed to be higher as approaching the metal core,
And, near the boundary with the upper surface of the anti-vibration base of the core metal, it is formed to have a required width in a radially outward direction and has a slope whose outer peripheral side is lowered, and has a flange-like shape that partially restricts the movement of the anti-vibration base. The suppression plate is fixedly installed, and the engine is supported in an anti-vibration manner by the reversible flow of liquid filling by fixing the suppression plate, while the engine moves up and down due to external vibration, Even if the supporting metal core repeatedly moves violently, conventionally, the vicinity of the upper center of the vibration-proof base, which is liable to be torn or the like, is restricted by the suppression plate, so that its deformation is limited. In addition, even if the weight of the engine or the like is increased at the same time, the anti-vibration base has a remarkable effect of reliably preventing the local damage of the anti-vibration base and improving the durability of the anti-vibration mount. A. Particularly in the present invention,
It is provided near the boundary between the metal core and the upper surface of the vibration isolating base,
Near the metal core of the suppression plate in the state of the
The substrate comes into almost contact with the substrate, thereby applying a contact pressure to the vibration-proof substrate.
To prevent the occurrence of scratches such as tearing of this part.
And the outer peripheral side of the suppression plate is formed with a slope.
In response to the inclination of the upper surface of the vibration isolating substrate.
Make the clearance angle with the surface an appropriate value to prevent the above-mentioned
It has the advantage that it can help stop.

【図面の簡単な説明】 【図1】本発明実施例の液封入式防振マウントを示す一
部断面正面図である。 【符号の説明】 1 本体金具 2 下部開口部 3 防振基体 4 上部開口部 5 ダイヤフラム 6,6a,6b 液室 7 オリフィス 8 仕切板 9 芯金具 10 ステイ 11 ブラケット 12 椀状部 13 ストッパーゴム 14 エンジン側ステイ 15 ダイヤフラムカバー 16 抑制板
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially sectional front view showing a liquid-filled anti-vibration mount according to an embodiment of the present invention. DESCRIPTION OF THE SYMBOLS 1 Body fitting 2 Lower opening 3 Vibration-proof base 4 Upper opening 5 Diaphragm 6, 6a, 6b Liquid chamber 7 Orifice 8 Partition plate 9 Core fitting 10 Stay 11 Bracket 12 Bow-shaped part 13 Stopper rubber 14 Engine Side stay 15 Diaphragm cover 16 Suppression plate

───────────────────────────────────────────────────── フロントページの続き (72)発明者 高岡 政嗣 愛知県西加茂郡三好町大字打越字生賀山 3番地 東洋ゴム工業株式会社 自動車 部品技術センター内 (56)参考文献 特開 平4−302727(JP,A) 特開 平4−334625(JP,A) 特開 平5−60170(JP,A) 特開 平4−194429(JP,A) 特開 平6−185569(JP,A) 実開 平3−124043(JP,U) 実開 昭64−17049(JP,U) (58)調査した分野(Int.Cl.7,DB名) F16F 13/00 B60K 5/12 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masatsugu Takaoka 3rd Ikuyama, Utsugoe, Miyoshi-cho, Nishikamo-gun, Aichi Pref. Toyo Tire & Rubber Co., Ltd. Automotive Parts Technology Center (56) References JP-A-4-302727 ( JP, A) JP-A-4-334625 (JP, A) JP-A-5-60170 (JP, A) JP-A-4-194429 (JP, A) JP-A-6-185569 (JP, A) Hei 3-124043 (JP, U) Japanese Utility Model Showa 64-17049 (JP, U) (58) Field surveyed (Int. Cl. 7 , DB name) F16F 13/00 B60K 5/12

Claims (1)

(57)【特許請求の範囲】 【請求項1】筒状本体金具の下部開口部にゴム弾性体か
らなる防振基体を、上部開口部にゴム膜からなるダイヤ
フラムを、夫々シール状態に取着せしめて液室を形成す
る一方、該液室をオリフィスを備える仕切板にて分割
し、かつ上記防振基体に芯金具を支軸状に取着せしめて
一体化してなる液封入式防振マウントにおいて、上記芯
金具を液室内まで貫設すると共に、上記防振基体上面
金具に近づくにつれ高くなるよう形成せしめ、かつ上
記芯金具の防振基体上面との境界付近に、半径外方向に
所要幅をもって拡がり、外周側が下降した傾斜を有し形
成された、上記防振基体の動きを一部制限するフランジ
状の抑制板を固設したことを特徴とする液封入式防振マ
ウント。
(57) [Claims] [Claim 1] A vibration-proof base made of a rubber elastic body is attached to a lower opening of a cylindrical main body fitting, and a diaphragm made of a rubber film is attached to an upper opening thereof in a sealed state. A liquid-filled anti-vibration mount that forms a liquid chamber at the same time, divides the liquid chamber with a partition plate having an orifice, and attaches a metal core to the anti-vibration base in a spindle shape and integrates it. In the above, while the core metal fitting is penetrated into the liquid chamber ,
It is formed so as to be higher as it approaches the metal core , and has a required width extending radially outward in the vicinity of the boundary between the metal core and the upper surface of the vibration isolating base, and has a slope with the outer peripheral side lowered.
Made a, the hydraulic antivibration mount, characterized in that fixedly provided a flange-like control plate which partially restricts the movement of the vibration-isolating base.
JP18066093A 1993-06-25 1993-06-25 Liquid-filled anti-vibration mount Expired - Fee Related JP3472883B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18066093A JP3472883B2 (en) 1993-06-25 1993-06-25 Liquid-filled anti-vibration mount

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18066093A JP3472883B2 (en) 1993-06-25 1993-06-25 Liquid-filled anti-vibration mount

Publications (2)

Publication Number Publication Date
JPH0777234A JPH0777234A (en) 1995-03-20
JP3472883B2 true JP3472883B2 (en) 2003-12-02

Family

ID=16087092

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18066093A Expired - Fee Related JP3472883B2 (en) 1993-06-25 1993-06-25 Liquid-filled anti-vibration mount

Country Status (1)

Country Link
JP (1) JP3472883B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3858141B2 (en) 2000-06-02 2006-12-13 東洋ゴム工業株式会社 Liquid-filled vibration isolator
WO2003001079A1 (en) 2001-06-21 2003-01-03 Toyo Tire & Rubber Co., Ltd. Liquid-in vibration isolating device
EP1316741A1 (en) 2001-11-28 2003-06-04 Toyo Tire & Rubber Co., Ltd . Liquid-sealed antivibration device

Also Published As

Publication number Publication date
JPH0777234A (en) 1995-03-20

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