JP2003294078A - Fluid filling-in vibration-resistant device - Google Patents

Fluid filling-in vibration-resistant device

Info

Publication number
JP2003294078A
JP2003294078A JP2002111378A JP2002111378A JP2003294078A JP 2003294078 A JP2003294078 A JP 2003294078A JP 2002111378 A JP2002111378 A JP 2002111378A JP 2002111378 A JP2002111378 A JP 2002111378A JP 2003294078 A JP2003294078 A JP 2003294078A
Authority
JP
Japan
Prior art keywords
elastic film
chamber
lattice
vibration
holes
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
Application number
JP2002111378A
Other languages
Japanese (ja)
Other versions
JP3978537B2 (en
Inventor
Takeshi Hamanaka
Shingo Hatakeyama
Masaaki Ito
政昭 伊藤
毅 浜中
晋吾 畠山
Original Assignee
Nissan Motor Co Ltd
Toyo Tire & Rubber Co Ltd
日産自動車株式会社
東洋ゴム工業株式会社
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
Priority to JP2002024645 priority Critical
Priority to JP2002-24645 priority
Application filed by Nissan Motor Co Ltd, Toyo Tire & Rubber Co Ltd, 日産自動車株式会社, 東洋ゴム工業株式会社 filed Critical Nissan Motor Co Ltd
Priority to JP2002111378A priority patent/JP3978537B2/en
Publication of JP2003294078A publication Critical patent/JP2003294078A/en
Application granted granted Critical
Publication of JP3978537B2 publication Critical patent/JP3978537B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vibration-resistant device preventing a filled liquid from unnecessarily leaking out between through-holes of a partitioning member and improving vibration-resistant performance. <P>SOLUTION: The vibration-resistant device is provided with a first installing member 10 and a second installing member 12 which are combined each other via a vibration-resistant base body 14 formed by a rubber material, a fluid filling-in chamber 26 arranged between a diaphragm 22 mounted on the installing member 12 and the vibration-resistant base body 14 which is partitioned into two chambers by a partitioning member 30, and two chambers 26a and 26b connected each other by an orifice 28. The partitioning member 30 comprises an elastic film 32 partitioning two chambers 26a and 26b, and a pair of lattices 40 and 42 restricting displacement of the elastic film 32. A projected ridge 48 surrounding the whole through-holes 46 at the whole periphery is integrally arranged on the surface of the elastic film 32. A movement of fluid between adjacent through-holes is controlled by making the projected ridge 48 connected with the lattices 40 and 42. <P>COPYRIGHT: (C)2004,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、主として自動車エ
ンジン等の振動体を防振的に支承するのに用いられる流
体封入式防振装置に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluid-filled type vibration damping device mainly used for supporting a vibration body such as an automobile engine in a vibration-proof manner.

【0002】[0002]

【従来の技術】一般に、流体封入式防振装置は、エンジ
ン等の振動発生体側に取り付けられる第1取付金具と、
車体フレーム等の支持側に取付固定される筒状の第2取
付金具とを、ゴム材よりなる防振基体を介して結合し、
上記第2取付金具の下部側に防振基体と対向してダイヤ
フラムを配し、防振基体とダイヤフラムとの間の内室を
流体封入室とし、この流体封入室を仕切部材により防振
基体側とダイヤフラム側との2室に仕切り、両室をオリ
フィスにより連通せしめてなり、オリフィスによる両液
室間の液流動効果や防振基体の制振効果により、振動減
衰機能を果たすように構成されている。
2. Description of the Related Art Generally, a fluid filled type vibration damping device includes a first mounting member mounted on the side of a vibration generator such as an engine,
A tubular second mounting member that is mounted and fixed to the support side of the vehicle body frame or the like is coupled via a vibration damping base made of a rubber material,
A diaphragm is arranged on the lower side of the second mounting member so as to face the anti-vibration base body, and an inner chamber between the anti-vibration base body and the diaphragm is used as a fluid sealing chamber. It is divided into two chambers, one on the diaphragm side and the other on the diaphragm side, and both chambers are connected by an orifice. It is configured to perform a vibration damping function by the liquid flow effect between both liquid chambers by the orifice and the damping effect of the vibration-proof base. There is.

【0003】かかる流体封入式防振装置において、仕切
部材を、往復動変位する弁部材としての弾性膜と、該弾
性膜の動きを制限する上下一対の格子とで構成したもの
が公知である。このような弾性膜を持つ防振装置は、車
両走行時の路面の凹凸に起因する振動のような周波数の
低い大振幅の振動下では、流体がオリフィスを通って2
室間を流動することで振動減衰機能を発揮する。一方、
エンジンの回転数に起因する振動のような周波数の高い
微振幅の振動下では、上記オリフィスは機能せず、弾性
膜の往復動変形により振動減衰機能を発揮する。
In such a fluid filled type vibration damping device, it is known that the partition member is composed of an elastic film as a valve member which is reciprocally displaced, and a pair of upper and lower lattices which restrict the movement of the elastic film. The anti-vibration device having such an elastic film allows the fluid to pass through the orifice under the vibration of a large amplitude at a low frequency such as a vibration caused by the unevenness of the road surface when the vehicle is traveling.
It exerts a vibration damping function by flowing between the chambers. on the other hand,
The orifice does not function under vibration of high frequency and small amplitude such as vibration caused by the engine speed, and exhibits a vibration damping function by reciprocating deformation of the elastic film.

【0004】フランス国特許公開第2674590号公
報には、上下の液室を仕切る仕切部材として、上下一対
の格子と、該格子間に保持された弾性膜とで構成したも
のが開示されている。同公報では、弾性膜は、その中央
部が上下の格子間に挟持され、縁部が浮動するように設
けられており、弾性膜と格子との衝突音や望ましくない
騒音の発生を防止するため、弾性膜の少なくとも一方の
面には格子に対向する円形突起が設けられている。この
円形突起は、弾性膜の表面にリング状に並んだ状態で均
等に配置されており、弾性膜の作動時に、格子に段階的
に押圧され次いで弾性的に弛緩する機能を持っている。
French Patent Publication No. 2674590 discloses a partition member for partitioning the upper and lower liquid chambers, which is composed of a pair of upper and lower lattices and an elastic film held between the lattices. In the publication, the elastic film is provided so that its central portion is sandwiched between the upper and lower lattices and the edges are floated, so as to prevent collision noise between the elastic film and the lattice and generation of undesired noise. A circular protrusion facing the lattice is provided on at least one surface of the elastic film. The circular protrusions are evenly arranged in a ring shape on the surface of the elastic film, and have a function of being gradually pressed by the lattice and then elastically relaxed when the elastic film is activated.

【0005】また、特開平6−221368号公報に
は、上記と同様に弾性膜と格子との衝突音や望ましくな
い騒音の発生を防止するため、弾性膜ではなく格子に、
角度的には順次であるが、軸線の回り全体にわたって角
度的に繰り返しのない不均等性のリブを設ける技術が開
示されている。
Further, in Japanese Unexamined Patent Publication No. 6-221368, in order to prevent the collision noise between the elastic film and the grating and the generation of undesired noise as in the above, the grating is not formed on the elastic film,
Disclosed is a technique for providing non-uniform ribs that are angularly sequential, but angularly non-repeating around the entire axis.

【0006】[0006]

【発明が解決しようとする課題】上記従来技術の円形突
起やリブは、弾性膜が上下に変位することで格子に衝突
する際の衝撃音を軽減するために設けられたものであ
り、格子により形成される貫通孔間において、周方向や
半径方向での封入液の移動を制限するものではない。そ
のため、上記従来の防振装置では、周波数の低い大振幅
の振動下において、隣接する貫通孔間で封入液の移動
(リーク)が起こり、より高い性能を発揮し難い。
The circular projections and ribs of the prior art described above are provided to reduce the impact noise when the elastic film is vertically displaced and collides with the lattice. The movement of the enclosed liquid in the circumferential direction and the radial direction between the formed through holes is not limited. Therefore, in the above-described conventional vibration isolator, the filled liquid moves (leaks) between the adjacent through holes under a large-amplitude vibration with a low frequency, and it is difficult to exhibit higher performance.

【0007】本発明は、このような点に鑑みてなされた
ものであり、仕切部材の貫通孔間における封入流体の不
必要なリークを防止して、防振性能を向上することを目
的とする。
The present invention has been made in view of the above points, and it is an object of the present invention to prevent unnecessary leakage of the enclosed fluid between the through holes of the partition member and improve the vibration isolation performance. .

【0008】[0008]

【課題を解決するための手段】本発明の流体封入式防振
装置は、第1取付部材と、第2取付部材と、これら取付
部材の間に介設されて両取付部材を結合するゴム材より
なる防振基体と、前記防振基体に対向させて前記第2取
付部材に取り付けたダイヤフラムと、前記の防振基体と
ダイヤフラムとの間に設けられた流体封入室と、前記流
体封入室を防振基体側の第1室とダイヤフラム側の第2
室とに仕切る仕切部材と、前記の第1室と第2室を連通
させるオリフィスと、を備え、前記仕切部材が、前記の
第1室と第2室を仕切る弾性膜と、該弾性膜の変位を制
限する一対の格子とを備えてなり、前記弾性膜の表面と
これに対向する前記格子の面との間に、該格子により形
成される各貫通孔を全周にわたって取り囲み隣接する貫
通孔間での流体の移動を規制する凸条を設けたものであ
る。
SUMMARY OF THE INVENTION A fluid filled type vibration damping device of the present invention comprises a first mounting member, a second mounting member, and a rubber material which is interposed between these mounting members and connects both mounting members. An anti-vibration base body, a diaphragm facing the anti-vibration base body and attached to the second mounting member, a fluid filling chamber provided between the vibration damping base body and the diaphragm, and the fluid filling chamber. The first chamber on the side of the vibration isolation base and the second chamber on the side of the diaphragm
An elastic film for partitioning the first chamber and the second chamber, and a partition member for partitioning the chamber into a chamber, and an orifice for communicating the first chamber and the second chamber with each other. A pair of lattices for restricting displacement, the through-holes surrounding the through-holes formed by the lattices between the surface of the elastic film and the face of the lattice opposed to the elastic film, and adjoining the through-holes. A ridge is provided to regulate the movement of the fluid between them.

【0009】本発明の流体封入式防振装置では、弾性膜
とこれに対向する格子との間に各貫通孔を全周にわたっ
て取り囲む凸条を設けたことにより、特に周波数の低い
大振幅の振動下において上記凸条が隣接する貫通孔間で
の流体の漏れを防止する。そのため、弾性膜を各貫通孔
ごとに撓ませることができ、高いロスファクターが得ら
れる。また、周波数の高い微振幅の振動下では、流体が
上記凸条を越えて移動するようにしてもよく、その場
合、凸条を越えて移動する流体が液圧差を緩和して低動
ばね定数を発揮する。
In the fluid filled type vibration damping device of the present invention, the ridges surrounding the through holes over the entire circumference are provided between the elastic film and the lattice facing the elastic film. The ridges below prevent fluid leakage between adjacent through holes. Therefore, the elastic film can be bent for each through hole, and a high loss factor can be obtained. In addition, under high-frequency, small-amplitude vibration, the fluid may move over the above-mentioned ridge. In that case, the fluid moving over the ridge relaxes the hydraulic pressure difference and has a low dynamic spring constant. Exert.

【0010】上記凸条は、弾性膜の表面又はこれに対向
する格子の面に一体に設けることができる。
The ridge can be integrally provided on the surface of the elastic film or the surface of the lattice facing the elastic film.

【0011】より具体的には、前記格子が、周方向に延
びる複数の環状部と、半径方向に延びて前記複数の環状
部を連結する連結部とからなり、該格子により周方向に
複数の貫通孔を配置してなる貫通孔列が2列以上設けら
れ、ここで、前記連結部は前記格子の内周側と外周側と
で異なるピッチで配されており、前記凸条が、前記弾性
膜に設けられており、前記格子の前記環状部に対応して
周方向に延びる複数の環状凸部と、前記格子の前記連結
部に対応して放射状に延びる複数の放射状凸部とからな
り、前記放射状凸部は、前記弾性膜の半径方向の略全長
にわたって、かつ、均等な角度で放射状に延びている場
合がある。この場合、放射状凸部の中には格子の連結部
上に載らないものもあるが、このように格子から外れた
凸条であっても弾性膜の各貫通孔ごとの撓み挙動を妨げ
ることはない。そのため、弾性膜の軸線回りで均等に配
置した凸条でも機能に支障を与えない。
More specifically, the lattice includes a plurality of annular portions extending in the circumferential direction and a connecting portion extending in the radial direction to connect the plurality of annular portions, and the lattice forms a plurality of circumferential portions. Two or more rows of through holes in which the through holes are arranged are provided, wherein the connecting portions are arranged at different pitches on the inner peripheral side and the outer peripheral side of the lattice, and the convex stripes are the elastic members. Provided on the film, a plurality of annular convex portions extending in the circumferential direction corresponding to the annular portion of the lattice, and a plurality of radial convex portions radially extending corresponding to the connecting portion of the lattice, The radial convex portion may extend radially over substantially the entire length of the elastic film in the radial direction and at an equal angle. In this case, some of the radial convex portions do not rest on the connecting portion of the lattice, but even such a convex strip that is out of the lattice does not hinder the bending behavior of each through hole of the elastic film. Absent. Therefore, even the ridges evenly arranged around the axis of the elastic film do not hinder the function.

【0012】弾性膜に上記凸条を設ける場合、弾性膜に
位置決め用凸部を設けるとともに、前記格子に該凸部が
嵌合する位置決め用凹部を設けて、両者を嵌合させるこ
とで前記弾性膜を回転方向で位置決めしてもよい。これ
により、弾性膜に設けた放射状凸部を格子の連結部上に
確実に載せることができる。
When the convex ridge is provided on the elastic film, the elastic film is provided with a positioning convex portion, and the lattice is provided with a positioning concave portion into which the convex portion is fitted, and the both are fitted to each other so that the elastic portion is formed. The membrane may be positioned in the rotational direction. As a result, the radial convex portions provided on the elastic film can be reliably placed on the connecting portions of the lattice.

【0013】[0013]

【発明の実施の形態】以下、本発明の実施形態を図面を
参照して説明する。
DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

【0014】図1は本発明の1実施形態に係る流体封入
式防振装置の縦断面図、図2はその分解図である。この
防振装置は、エンジン等の振動発生体側に取り付けられ
る第1取付金具10と、車体フレーム等の支持側に取付
固定される筒状の第2取付金具12とを、ゴム材よりな
る防振基体14を介して結合してなる。
FIG. 1 is a longitudinal sectional view of a fluid filled type vibration damping device according to one embodiment of the present invention, and FIG. 2 is an exploded view thereof. This vibration isolator comprises a first mounting bracket 10 mounted on the side of a vibration generator such as an engine, and a cylindrical second mounting bracket 12 mounted and fixed on a support side of a vehicle body frame or the like, which is made of a rubber material. It is connected through the base 14.

【0015】第2取付金具12は、筒状金具16と、そ
の下端16aにかしめ手段により締結された底金具18
とからなり、底金具18に取付用ボルト19が突設され
ている。
The second mounting member 12 is composed of a tubular member 16 and a bottom member 18 fastened to the lower end 16a by caulking means.
The bottom bracket 18 is provided with a mounting bolt 19 projecting therefrom.

【0016】第1取付金具10は、第2取付金具12の
軸心部上方に所要の間隔をおいて配された板状部材であ
り、その中央部に取付用ボルト20が上方に向けて突設
されている。
The first mounting member 10 is a plate-shaped member disposed above the axial center of the second mounting member 12 at a required interval, and the mounting bolt 20 projects upward at the center thereof. It is set up.

【0017】防振基体14は、外形が略截頭円錐形をな
し、その上面に第1取付金具10が加硫成形手段により
固着され、下端外周部に第2取付金具12の上端部が加
硫成形手段により固着されている。図の場合、筒状金具
16の上端部16bがテーパ状に拡径形成されており、
該上端部16bに防振基体14の下部外周が加硫接着さ
れている。第2取付金具12の内壁面には、防振基体1
4から薄膜状に延設された薄膜ゴム部14aが設けられ
ている。
The vibration-proof base 14 has a substantially frusto-conical outer shape, the first mounting member 10 is fixed to the upper surface thereof by vulcanization molding means, and the upper end of the second mounting member 12 is added to the outer periphery of the lower end. It is fixed by the sulfur molding means. In the case of the figure, the upper end portion 16b of the tubular metal member 16 is formed so as to have a tapered diameter.
The lower outer periphery of the vibration-proof substrate 14 is vulcanized and adhered to the upper end 16b. The anti-vibration substrate 1 is provided on the inner wall surface of the second mounting member 12.
4 is provided with a thin film rubber portion 14a extending in a thin film shape.

【0018】第2取付金具12の下部側には、防振基体
14と対向するようにゴム膜よりなるダイヤフラム22
が装着されている。ダイヤフラム22は、外周部にリン
グ状の補強金具24を備え、この補強金具24が筒状金
具16と底金具18とのかしめ部にかしめ固定されるこ
とで第2取付金具12に取り付けられている。
A diaphragm 22 made of a rubber film is provided on the lower side of the second mounting member 12 so as to face the vibration-proof substrate 14.
Is installed. The diaphragm 22 is provided with a ring-shaped reinforcing metal fitting 24 on the outer peripheral portion, and the reinforcing metal fitting 24 is attached to the second mounting metal fitting 12 by being caulked and fixed to the caulking portions of the tubular metal fitting 16 and the bottom metal fitting 18. .

【0019】第2取付金具12の内側には、ダイヤフラ
ム22と防振基体14との間に密閉された流体封入室2
6が形成されており、この流体封入室26に流体として
の液体が封入されている。流体封入室26における第2
取付金具12の内周には、外周にオリフィス28を有す
る円盤状の仕切部材30が液密に嵌着されている。流体
封入室26は、この仕切部材30により防振基体側の第
1室26aとダイヤフラム側の第2室26bとに仕切ら
れており、両室26a,26bがオリフィス28により
連通せしめられている。
Inside the second mounting member 12, a fluid-filled chamber 2 sealed between the diaphragm 22 and the vibration-proof substrate 14 is provided.
6 is formed, and a liquid as a fluid is sealed in the fluid sealing chamber 26. Second in the fluid sealing chamber 26
A disk-shaped partition member 30 having an orifice 28 on the outer periphery is liquid-tightly fitted to the inner periphery of the mounting member 12. The fluid sealing chamber 26 is partitioned by the partition member 30 into a first chamber 26a on the side of the vibration-proof base and a second chamber 26b on the side of the diaphragm, and both chambers 26a, 26b are connected by an orifice 28.

【0020】仕切部材30は、第1室26aと第2室2
6bとを仕切る弁部材としての円板状のゴム膜32と、
外周にオリフィス28を形成するための溝34を備える
オリフィス部材36と、オリフィス部材36の外周縁部
を防振基体14側に押圧する仕切板38とで構成されて
いる。
The partition member 30 includes a first chamber 26a and a second chamber 2
A disk-shaped rubber film 32 as a valve member for partitioning 6b,
It is composed of an orifice member 36 having a groove 34 for forming the orifice 28 on the outer periphery thereof, and a partition plate 38 for pressing the outer peripheral edge portion of the orifice member 36 toward the vibration-proof substrate 14 side.

【0021】オリフィス部材36は、金属又は樹脂のモ
ールド成形体であって、外周面には周方向に上下2周に
わたって延びる溝34が形成されている。この溝34と
防振基体14の薄膜ゴム部14aとで囲まれた空間がオ
リフィス28とされている。
The orifice member 36 is a molded product of metal or resin, and has a groove 34 formed on the outer peripheral surface thereof and extending in the upper and lower two rounds in the circumferential direction. The space surrounded by the groove 34 and the thin-film rubber portion 14a of the vibration-proof substrate 14 is an orifice 28.

【0022】仕切板38は、金属板のプレス成形体であ
って、上方に突出した円板状の中央棚部38aを備え
る。仕切板38は、外周縁部38bが筒状金具16と底
金具18とのかしめ部にかしめ固定されることで第2取
付金具12に取り付けられている。
The partition plate 38 is a press-molded body of a metal plate and has a disk-shaped central shelf 38a protruding upward. The partition plate 38 is attached to the second mounting member 12 by caulking and fixing the outer peripheral edge portion 38 b to the caulking portions of the tubular metal member 16 and the bottom metal member 18.

【0023】オリフィス部材36と仕切板38には、オ
リフィス28を第1室26aと第2室26bに連通させ
るための開口37,39がそれぞれ設けられている。
The orifice member 36 and the partition plate 38 are provided with openings 37 and 39 for communicating the orifice 28 with the first chamber 26a and the second chamber 26b, respectively.

【0024】オリフィス部材36と仕切板38にはそれ
ぞれ中央部に、ゴム膜32の上下方向の変位を制限する
外形が円形の格子40,42が設けられている。ゴム膜
32は、第1室26aに面したオリフィス部材36の格
子40と第2室26bに面した仕切板38の格子42と
の間で形成される隙間(収容空間)44内に配されて、
両格子40,42間でその変位が制限される。隙間44
の寸法(高さ)は、ゴム膜32の厚みよりも若干大きく
設定されており、これにより、ゴム膜32の上下動変位
を可能にしている。
At the central portions of the orifice member 36 and the partition plate 38, lattices 40 and 42 having circular outer shapes for limiting the vertical displacement of the rubber film 32 are provided. The rubber film 32 is arranged in a gap (accommodation space) 44 formed between the lattice 40 of the orifice member 36 facing the first chamber 26a and the lattice 42 of the partition plate 38 facing the second chamber 26b. ,
The displacement between the two gratings 40 and 42 is limited. Gap 44
Is set to be slightly larger than the thickness of the rubber film 32, which allows the rubber film 32 to be displaced vertically.

【0025】両格子40,42は同一の格子形状を持っ
ている。図4に示すように、仕切板38の中央棚部38
aに設けられた格子42は、周方向に延びる3本の同心
状の環状部42aと、半径方向に延びて隣接する2つの
環状部間を連結する連結部42bとからなる。連結部4
2bは、格子42の内周側と外周側とで異なるピッチで
配されており、図の場合、内周側の連結部42bは90
°間隔で4本、外周側の連結部42bは45°間隔で8
本設けられている。また、内周側の連結部42bと外周
側の連結部42bとが全て一致しないように、両者は位
相を22.5°ずらして設けられている。この格子42
により、周方向に複数の長穴状の貫通孔46を配置して
なる貫通孔列が内周側と外周側との2列に設けられる
が、上記のように連結部42bのピッチを変えたことに
より、貫通孔46は内周側で4個、外周側で8個が設け
られる。このように内周側で貫通孔46の数を少なくす
ることで、内周側の各貫通孔46の開口面積を、外周側
と同程度に、大きく確保することができる。オリフィス
部材36の格子40も上記した仕切板38の格子42と
同一形状であり、かつ、両者36,38は互いの貫通孔
46が一致した位置に配されるように組付けられる。
Both gratings 40 and 42 have the same grating shape. As shown in FIG. 4, the central shelf 38 of the partition plate 38
The lattice 42 provided in a is composed of three concentric annular portions 42a extending in the circumferential direction and a connecting portion 42b extending in the radial direction and connecting two adjacent annular portions. Connecting part 4
2b are arranged at different pitches on the inner peripheral side and the outer peripheral side of the lattice 42, and in the case of the drawing, the connecting portions 42b on the inner peripheral side are 90
4 at intervals of 8 °, and the connecting portion 42b on the outer peripheral side is 8 at intervals of 45 °.
Book is provided. Further, the inner peripheral side connecting portion 42b and the outer peripheral side connecting portion 42b are provided with a phase shift of 22.5 ° so that they do not coincide with each other. This lattice 42
As a result, through-hole rows in which a plurality of long-hole-shaped through holes 46 are arranged in the circumferential direction are provided in two rows on the inner peripheral side and the outer peripheral side, but the pitch of the connecting portions 42b is changed as described above. As a result, four through holes 46 are provided on the inner peripheral side and eight through holes 46 are provided on the outer peripheral side. By reducing the number of the through holes 46 on the inner peripheral side in this manner, the opening area of each of the through holes 46 on the inner peripheral side can be secured to be as large as the outer peripheral side. The lattice 40 of the orifice member 36 also has the same shape as the lattice 42 of the partition plate 38 described above, and the both 36, 38 are assembled so that their through holes 46 are arranged at the same position.

【0026】ゴム膜32の表面には、上記格子40,4
2の対向する面に当接して各貫通孔46の外周を全周に
わたって取り囲む凸条48が一体に突出形成されてい
る。凸条48は、図3に示すように、ゴム膜32の上下
両面に同一形状にて設けられている。具体的には、図4
に示すように、凸条48は、格子42の環状部42aに
対応して周方向に延びる3本の同心状の環状凸部48a
と、格子42の連結部42bに対応して放射状に延びる
放射状凸部48bとからなる。この放射状凸部48b
は、ゴム膜32の中心から半径方向の略全長にわたって
延びている。また、放射状凸部48bは、格子42の全
ての連結部42bに少なくとも1本が載るように、か
つ、均等な角度で放射状の延びるように、22.5°間
隔で設けられている。
On the surface of the rubber film 32, the lattices 40 and 4 are formed.
A ridge 48 is integrally formed so as to abut the two opposing surfaces and surround the outer circumference of each through hole 46 over the entire circumference. As shown in FIG. 3, the ridges 48 are provided in the same shape on the upper and lower surfaces of the rubber film 32. Specifically, FIG.
As shown in FIG. 3, the ridge 48 has three concentric annular protrusions 48 a extending in the circumferential direction corresponding to the annular portion 42 a of the lattice 42.
And radial projections 48b extending radially corresponding to the connecting portions 42b of the lattice 42. This radial convex portion 48b
Extend from the center of the rubber film 32 over substantially the entire length in the radial direction. Further, the radial convex portions 48b are provided at intervals of 22.5 ° so that at least one radial convex portion 48b is placed on all the connecting portions 42b of the lattice 42 and also extends radially at an equal angle.

【0027】以上よりなる本実施形態の防振装置である
と、周波数の低い大振幅(例えば±0.3mm以上)の
振動下では、流体がオリフィス28を通って2室26
a,26b間を流動することにより振動減衰機能が発揮
される。また、ゴム膜32に設けた凸条48が相対する
格子40,42の支承面に当接することにより、周方向
又は半径方向に隣接する貫通孔46間での流体の漏れが
防止される。そのため、ゴム膜32を各貫通孔46ごと
に撓ませることができ、高いロスファクターが得られ
る。一方、周波数の高い微振幅(例えば±0.1mm以
下)の振動下では、上記オリフィス28は機能せず、凸
条48を越えて移動する流体により第1室26aと第2
室26bとの液圧差が緩和されて低動ばね定数が発揮さ
れる。このように本実施形態の防振装置であると、振幅
依存性をなくしつつ高いロスファクターと低動ばね定数
を達成することができ、異なる振幅下において十分な性
能を発揮させることができる。
According to the vibration isolator of the present embodiment having the above structure, the fluid passes through the orifice 28 and the two chambers 26 under the vibration of the low amplitude and large amplitude (for example, ± 0.3 mm or more).
A vibration damping function is exhibited by flowing between a and 26b. Further, the protrusions 48 provided on the rubber film 32 come into contact with the bearing surfaces of the lattices 40 and 42 which face each other, so that the leakage of the fluid between the through holes 46 adjacent in the circumferential direction or the radial direction is prevented. Therefore, the rubber film 32 can be bent for each through hole 46, and a high loss factor can be obtained. On the other hand, the orifice 28 does not function under the vibration of a high frequency and a slight amplitude (for example, ± 0.1 mm or less), and the first chamber 26 a and the second chamber 26 a are moved by the fluid moving beyond the ridge 48.
The hydraulic pressure difference with the chamber 26b is relaxed, and a low dynamic spring constant is exhibited. As described above, the vibration damping device of the present embodiment can achieve a high loss factor and a low dynamic spring constant while eliminating amplitude dependency, and can exhibit sufficient performance under different amplitudes.

【0028】なお、格子40,42の連結部の配設ピッ
チを内周側と外周側で変えたことにより、軸線回りに均
等に配設した放射状凸部48bでは、格子40,42の
連結部上に載らないものも存在する。但し、このように
格子40,42から外れた凸条48であってもゴム膜3
2の各貫通孔46ごとの撓み挙動を妨げることはないた
め、上記した性能に支承を与えない。
The arrangement pitch of the connecting portions of the gratings 40 and 42 is changed between the inner peripheral side and the outer peripheral side, so that the radial convex portions 48b evenly arranged around the axis line connect the connecting portions of the gratings 40 and 42. There are some that are not listed above. However, even if the ridges 48 deviate from the lattices 40 and 42 in this way, the rubber film 3
Since the bending behavior of each of the through holes 46 of No. 2 is not hindered, the above performance is not supported.

【0029】図5は、上記実施形態にゴム膜32の回転
方向での位置決めのための構成を追加した例を示したも
のである。すなわち、この例では、ゴム膜32は、仕切
板38側に突出する楕円形状の位置決め用凸部50を備
える。該凸部50はゴム膜32の中央部に設けられてい
る。また、仕切板38は、中央棚部38aの中心に上記
凸部50が嵌合する位置決め用凹部52を備える。該凹
部52は、この実施形態では凸部50の外形形状に対応
する長孔からなる。
FIG. 5 shows an example in which a configuration for positioning the rubber film 32 in the rotational direction is added to the above embodiment. That is, in this example, the rubber film 32 includes the elliptical positioning protrusion 50 protruding toward the partition plate 38. The convex portion 50 is provided at the center of the rubber film 32. The partition plate 38 also includes a positioning recess 52 into which the projection 50 fits in the center of the central shelf 38a. In this embodiment, the recess 52 is an elongated hole corresponding to the outer shape of the protrusion 50.

【0030】この場合、ゴム膜32を仕切板38上に組
付ける際に、ゴム膜32の凸部50を仕切板38の凹部
52に嵌合させながら、ゴム膜32を仕切板38の格子
42上に載せることにより、ゴム膜32に設けた放射状
凸部48bを格子42の連結部42b上に確実に載せる
ことができる。
In this case, when the rubber film 32 is mounted on the partition plate 38, the rubber film 32 is fitted into the recesses 52 of the partition plate 38 while the rubber film 32 is attached to the grid 42 of the partition plate 38. By mounting it on the top, the radial convex portions 48b provided on the rubber film 32 can be reliably mounted on the connecting portion 42b of the lattice 42.

【0031】なお、凸部50及び凹部52の形状は、回
転方向での位置決めが可能であれば上記した楕円形には
限定されず、多角形状など種々の形状を採用することが
できる。また、位置決め用凸部と凹部を2つずつ設けて
2組の嵌合により位置決めしてもよい。
The shapes of the convex portion 50 and the concave portion 52 are not limited to the above-mentioned elliptical shape as long as they can be positioned in the rotational direction, and various shapes such as a polygonal shape can be adopted. Alternatively, two positioning protrusions and two recesses may be provided to perform positioning by two sets of fittings.

【0032】以上の実施形態では、ゴム膜32に凸条4
8を設けたが、凸条は格子40,42に一体に設けても
よい。この場合、格子40,42に設けた凸条がゴム膜
32に当接することで隣接する貫通孔46間での流体の
漏れが防止される。
In the above embodiment, the ridges 4 are formed on the rubber film 32.
8 is provided, the ridges may be provided integrally with the lattices 40 and 42. In this case, the ridges provided on the lattices 40 and 42 come into contact with the rubber film 32 to prevent fluid leakage between the adjacent through holes 46.

【0033】[0033]

【発明の効果】本発明の流体封入式防振装置であると、
弾性膜とこれに対向する格子との間に各貫通孔を全周に
わたって取り囲む凸条を設けたことにより、特に周波数
の低い大振幅の振動下において隣接する貫通孔間での流
体の漏れを防止することでき、防振性能を向上すること
ができる。
According to the fluid filled type vibration damping device of the present invention,
By providing a ridge between the elastic film and the lattice facing it, surrounding each through-hole over the entire circumference, fluid leakage between adjacent through-holes is prevented especially under vibration of large amplitude with low frequency. It is possible to improve the anti-vibration performance.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の1実施形態に係る防振装置の縦断面図
である。
FIG. 1 is a vertical cross-sectional view of a vibration damping device according to an embodiment of the present invention.

【図2】同防振装置を分解して示す断面図である。FIG. 2 is a cross-sectional view showing the vibration isolator in an exploded manner.

【図3】図2のA部拡大図である。FIG. 3 is an enlarged view of part A of FIG.

【図4】(a)は仕切板の斜視図、(b)はゴム膜の斜
視図、(c)は仕切板とゴム膜を組み合わせた状態での
平面図である。
4A is a perspective view of a partition plate, FIG. 4B is a perspective view of a rubber film, and FIG. 4C is a plan view in a state where the partition plate and the rubber film are combined.

【図5】(a)は他の実施形態における仕切板とゴム膜
を組み合わせた状態での平面図、(b)はそのB−B断
面図である。
FIG. 5A is a plan view in a state where a partition plate and a rubber film according to another embodiment are combined, and FIG. 5B is a BB sectional view thereof.

【符号の説明】[Explanation of symbols]

10……第1取付金具 12……第2取付金具 14……防振基体 22……ダイヤフラム 26……流体封入室 28……オリフィス 30……仕切部材 32……ゴム膜 40,42……格子 42a……環状部 42b……連結部 48……凸条 48a……環状凸部 48b……放射状凸部 10 ... 1st mounting bracket 12 …… Second mounting bracket 14 ... Anti-vibration substrate 22 ... Diaphragm 26 ... Fluid enclosure 28: Orifice 30: Partition member 32 ... Rubber film 40, 42 ... Lattice 42a ... annular part 42b ... connecting part 48 ... Convex 48a: annular protrusion 48b ... Radial convex portion

───────────────────────────────────────────────────── フロントページの続き (72)発明者 畠山 晋吾 大阪府大阪市西区江戸堀1丁目17番18号 東洋ゴム工業株式会社内 (72)発明者 浜中 毅 神奈川県横浜市神奈川区宝町2番地 日産 自動車株式会社内 Fターム(参考) 3D035 CA05 3J047 AA03 CA04 CB06 DA01 FA02   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shingo Hatakeyama             1-17-18 Edobori, Nishi-ku, Osaka City, Osaka Prefecture             Toyo Tire & Rubber Co., Ltd. (72) Inventor Takeshi Hamanaka             Nissan, Takaracho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan             Inside the automobile corporation F-term (reference) 3D035 CA05                 3J047 AA03 CA04 CB06 DA01 FA02

Claims (4)

    【特許請求の範囲】[Claims]
  1. 【請求項1】第1取付部材と、第2取付部材と、これら
    取付部材の間に介設されて両取付部材を結合するゴム材
    よりなる防振基体と、前記防振基体に対向させて前記第
    2取付部材に取り付けたダイヤフラムと、前記の防振基
    体とダイヤフラムとの間に設けられた流体封入室と、前
    記流体封入室を防振基体側の第1室とダイヤフラム側の
    第2室とに仕切る仕切部材と、前記の第1室と第2室を
    連通させるオリフィスと、を備え、 前記仕切部材が、前記の第1室と第2室を仕切る弾性膜
    と、該弾性膜の変位を制限する一対の格子とを備えてな
    り、 前記弾性膜の表面とこれに対向する前記格子の面との間
    に、該格子により形成される各貫通孔を全周にわたって
    取り囲み隣接する貫通孔間での流体の移動を規制する凸
    条を設けたことを特徴とする流体封入式防振装置。
    1. A first mounting member, a second mounting member, a vibration-damping base body made of a rubber material which is interposed between these mounting members and connects both mounting members, and is made to face the vibration-proof base body. A diaphragm attached to the second mounting member, a fluid sealing chamber provided between the vibration damping base and the diaphragm, and a first chamber on the vibration damping base side and a second chamber on the diaphragm side for the fluid sealing chamber. A partition member for partitioning the first chamber and the second chamber, and an orifice for communicating the first chamber and the second chamber, wherein the partition member partitions the first chamber and the second chamber, and the displacement of the elastic film. Between the surface of the elastic film and the surface of the lattice opposite to the surface of the elastic film, and the through holes formed around the entire periphery of the through holes formed between the elastic membranes. Flows characterized by the provision of ridges that regulate the movement of fluid in Filled vibration damping device.
  2. 【請求項2】前記凸条が、前記弾性膜の表面又はこれに
    対向する前記格子の面に一体に設けられたことを特徴と
    する請求項1記載の流体封入式防振装置。
    2. The fluid filled type vibration damping device according to claim 1, wherein the convex stripe is integrally provided on a surface of the elastic film or a surface of the lattice facing the elastic film.
  3. 【請求項3】前記格子が、周方向に延びる複数の環状部
    と、半径方向に延びて前記複数の環状部を連結する連結
    部とからなり、該格子により周方向に複数の貫通孔を配
    置してなる貫通孔列が2列以上設けられ、ここで、前記
    連結部は前記格子の内周側と外周側とで異なるピッチで
    配されており、 前記凸条が、前記弾性膜に設けられており、前記格子の
    前記環状部に対応して周方向に延びる複数の環状凸部
    と、前記格子の前記連結部に対応して放射状に延びる複
    数の放射状凸部とからなり、 前記放射状凸部は、前記弾性膜の半径方向の略全長にわ
    たって、かつ、均等な角度で放射状に延びていることを
    特徴とする請求項1又は2記載の流体封入式防振装置。
    3. The lattice includes a plurality of annular portions extending in the circumferential direction and a connecting portion extending in the radial direction to connect the plurality of annular portions, and the lattice forms a plurality of through holes in the circumferential direction. Two or more rows of through holes are provided, wherein the connecting portions are arranged at different pitches on the inner peripheral side and the outer peripheral side of the lattice, and the ridges are provided on the elastic film. And a plurality of annular convex portions extending in the circumferential direction corresponding to the annular portion of the lattice, and a plurality of radial convex portions radially extending corresponding to the connecting portion of the lattice, the radial convex portion 3. The fluid filled type vibration damping device according to claim 1, wherein the elastic film radially extends over substantially the entire radial direction of the elastic film at an equal angle.
  4. 【請求項4】前記弾性膜に位置決め用凸部を設けるとと
    もに、前記格子に該凸部が嵌合する位置決め用凹部を設
    けて、両者を嵌合させることで前記弾性膜を回転方向で
    位置決めしたことを特徴とする請求項3記載の流体封入
    式防振装置。
    4. The elastic film is provided with a positioning projection, and the grid is provided with a positioning recess into which the projection fits, and the two are fitted to position the elastic film in the rotational direction. The fluid filled type vibration damping device according to claim 3, wherein
JP2002111378A 2002-01-31 2002-04-12 Fluid filled vibration isolator Active JP3978537B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2002024645 2002-01-31
JP2002-24645 2002-01-31
JP2002111378A JP3978537B2 (en) 2002-01-31 2002-04-12 Fluid filled vibration isolator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002111378A JP3978537B2 (en) 2002-01-31 2002-04-12 Fluid filled vibration isolator

Publications (2)

Publication Number Publication Date
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JP3978537B2 JP3978537B2 (en) 2007-09-19

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ID=29253426

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004090374A1 (en) * 2003-04-04 2004-10-21 Toyo Tire & Rubber Co. Ltd. Liquid-sealed vibration control equipment and elastic partition film for use therein
EP1574742A1 (en) * 2004-01-08 2005-09-14 TOYO TIRE &amp; RUBBER CO., LTD . Hydraulic antivibration device
WO2005088158A1 (en) * 2004-03-12 2005-09-22 Toyo Tire & Rubber Co. Ltd. Fluid filling-in vibration resistant device
WO2005100814A1 (en) * 2004-03-31 2005-10-27 Toyo Tire & Rubber Co. Ltd. Liquid-sealed vibration isolator, and elastic partition membrane and clamping member for use therein
JP2007051713A (en) * 2005-08-18 2007-03-01 Nissan Motor Co Ltd Liquid sealed type vibration control device
US7258332B2 (en) 2004-03-12 2007-08-21 Toyo Tire & Rubber Co., Ltd. Hydraulic antivibration device
JP2008175398A (en) * 2008-04-01 2008-07-31 Toyo Tire & Rubber Co Ltd Fluid-filled vibration control device
JP2008202765A (en) * 2007-02-22 2008-09-04 Toyo Tire & Rubber Co Ltd Liquid-sealed vibration control device
JP2010223324A (en) * 2009-03-23 2010-10-07 Bridgestone Corp Vibration control device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7516947B2 (en) 2003-04-04 2009-04-14 Toyo Tire & Rubber Co., Ltd. Liquid-sealed vibration control equipment and elastic partition film for use therein
WO2004090374A1 (en) * 2003-04-04 2004-10-21 Toyo Tire & Rubber Co. Ltd. Liquid-sealed vibration control equipment and elastic partition film for use therein
EP1574742A1 (en) * 2004-01-08 2005-09-14 TOYO TIRE &amp; RUBBER CO., LTD . Hydraulic antivibration device
WO2005088158A1 (en) * 2004-03-12 2005-09-22 Toyo Tire & Rubber Co. Ltd. Fluid filling-in vibration resistant device
US7258332B2 (en) 2004-03-12 2007-08-21 Toyo Tire & Rubber Co., Ltd. Hydraulic antivibration device
WO2005100814A1 (en) * 2004-03-31 2005-10-27 Toyo Tire & Rubber Co. Ltd. Liquid-sealed vibration isolator, and elastic partition membrane and clamping member for use therein
JP2007051713A (en) * 2005-08-18 2007-03-01 Nissan Motor Co Ltd Liquid sealed type vibration control device
JP4585941B2 (en) * 2005-08-18 2010-11-24 日産自動車株式会社 Liquid-filled vibration isolator
JP4718500B2 (en) * 2007-02-22 2011-07-06 東洋ゴム工業株式会社 Liquid-filled vibration isolator
JP2008202765A (en) * 2007-02-22 2008-09-04 Toyo Tire & Rubber Co Ltd Liquid-sealed vibration control device
JP4532575B2 (en) * 2008-04-01 2010-08-25 東洋ゴム工業株式会社 Fluid filled vibration isolator
JP2008175398A (en) * 2008-04-01 2008-07-31 Toyo Tire & Rubber Co Ltd Fluid-filled vibration control device
JP2010223324A (en) * 2009-03-23 2010-10-07 Bridgestone Corp Vibration control device

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