JPH0799188B2 - Power unit mounting device - Google Patents
Power unit mounting deviceInfo
- Publication number
- JPH0799188B2 JPH0799188B2 JP61267131A JP26713186A JPH0799188B2 JP H0799188 B2 JPH0799188 B2 JP H0799188B2 JP 61267131 A JP61267131 A JP 61267131A JP 26713186 A JP26713186 A JP 26713186A JP H0799188 B2 JPH0799188 B2 JP H0799188B2
- Authority
- JP
- Japan
- Prior art keywords
- mounting
- vibration
- mass member
- engine
- elastic
- 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 - Lifetime
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
- F16F13/22—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 characterised by comprising also a dynamic damper
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Devices Of Dampers And Springs (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、エンジン等のパワーユニットを車体等の基台
にマウンティングしてパワーユニットの振動が基台に伝
達されるのを抑えるためのマウンティング装置に関し、
特に、内部の流体によりダンピング効果を得るようにし
たいわゆる流体封入式のものの改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting device for mounting a power unit such as an engine on a base such as a vehicle body and suppressing the vibration of the power unit from being transmitted to the base. ,
In particular, it relates to an improvement of a so-called fluid-filled type in which a damping effect is obtained by the internal fluid.
（従来の技術） 従来、この種の流体封入式マウンティング装置は、例え
ば車両の走行路面からの振動や車輪のアンバランス等に
よりパワーユニットとしての車載エンジンが上下方向に
10〜15Hz程度で振動するいわゆるエンジンシェイク時
に、その振動が基台としての車体に伝達するのを有効に
低減できる効果を持つものとして一般によく知られてい
る。すなわち、このマウンティング装置は、例えば実開
昭59−108841号公報等に示されるように、車体に取り付
けられる車体取付部材と、エンジンに取り付けられるエ
ンジン取付部材と、上記両取付部材間に設けられ、非圧
縮性流体を封入する密閉状態の流体室と、該流体室の壁
の一部を構成し、流体室内の圧力変化に応じて変形する
弾性膜と、上記流体室にその内部に上記弾性膜を壁とす
る室を区画形成するように配設され、オリフィスを有す
る仕切壁とを備えてなり、上記オリフィスでの流体の共
振現象に伴う振動減衰作用（ダンピング作用）によって
エンジンシェイクを抑制するようにしたものである。(Prior Art) Conventionally, in this type of fluid-filled mounting device, an in-vehicle engine as a power unit moves vertically due to, for example, vibration from the road surface of the vehicle or unbalance of wheels.
It is generally well known as an effect that can effectively reduce the transmission of the vibration to the vehicle body as a base during so-called engine shake that vibrates at about 10 to 15 Hz. That is, this mounting device is, for example, as shown in Japanese Utility Model Laid-Open No. 59-108841 or the like, a vehicle body mounting member mounted on a vehicle body, an engine mounting member mounted on an engine, and provided between the both mounting members, A hermetically sealed fluid chamber that encloses an incompressible fluid, an elastic film that forms a part of the wall of the fluid chamber and is deformed according to a pressure change in the fluid chamber, and the elastic film inside the fluid chamber. And a partition wall having an orifice, which is arranged so as to define a chamber having a wall as a wall, and suppresses engine shake by a vibration damping action (damping action) associated with the resonance phenomenon of fluid at the orifice. It is the one.
（発明が解決しようとする課題） ところで、このような流体封入式マウンティング装置に
さらに改良を加えるため、上記のエンジン取付部材と車
体取付部材との間に所定の重さを有するマス部材を弾性
部材を介して弾性支持するとともに、このマス部材の共
振周波数をオリフィスでの流体の共振周波数よりも高く
設定することにより、上記マス部材がその共振周波数よ
りも高い周波数域では振動を遮断するように逆位相で振
動する現象を利用し、流体封入式マウンティング装置の
持つ本来の効果（エンジンシェイク等に対するダンピン
グ効果）に加え、マス部材の共振周波数よりも高くてエ
ンジンの燃焼音やギヤ音が含まれたこもり音となる80〜
100Hz以上の高周波振動を低減してローパスフィルタ効
果を得るようにすることが考えられる。(Problems to be Solved by the Invention) In order to further improve such a fluid-filled mounting device, a mass member having a predetermined weight is provided between the engine mounting member and the vehicle body mounting member as an elastic member. The mass member is elastically supported via the, and the resonance frequency of this mass member is set higher than the resonance frequency of the fluid at the orifice, so that the mass member reverses vibration in a frequency range higher than the resonance frequency. Utilizing the phenomenon of oscillating in phase, in addition to the original effect of the fluid-filled mounting device (damping effect for engine shake, etc.), engine combustion noise and gear noise higher than the resonance frequency of the mass member were included. A muffled sound 80 ~
It is conceivable to reduce the high frequency vibration of 100Hz or more to obtain the low pass filter effect.
ところが、その場合、マス部材の共振現象を利用してい
るため、そのマス部材の共振周波数域で振動の振幅が急
激に増大し、車体に対する振動伝達率が極度に増大する
という問題が生じる。However, in that case, since the resonance phenomenon of the mass member is used, there arises a problem that the amplitude of vibration sharply increases in the resonance frequency range of the mass member and the vibration transmissibility to the vehicle body extremely increases.
そこで、本発明は斯かる諸点に鑑みてなされたもので、
その目的とするところは、上記したオリフィスがその内
部の流体の共振周波数よりも高い振動周波数域では目詰
まり状態となることに着目し、その目詰まりに伴う流体
室の圧力上昇を効果的に利用してマス部材の共振周波数
域での大振幅の振動を抑制するようにすることにより、
流体封入式マウンティング装置のオリフィスでの流体の
共振現象によるダンピング効果によってエンジンシェイ
ク等、パワーユニットの所定周波数の振動を抑制すると
ともに、マス部材の共振周波数域での振動伝達率を抑え
てそのローパスフィルタ効果を活用しようとすることに
ある。Therefore, the present invention has been made in view of these points,
The purpose is to pay attention to the fact that the above-mentioned orifice becomes clogged in the vibration frequency range higher than the resonance frequency of the fluid inside it, and effectively utilize the pressure rise of the fluid chamber due to the clogging. By suppressing the large amplitude vibration in the resonance frequency range of the mass member,
Damping effect due to the resonance phenomenon of the fluid at the orifice of the fluid-filled mounting device suppresses vibration of the power unit at a predetermined frequency, such as engine shake, and also suppresses the vibration transmissibility of the mass member in the resonance frequency range to achieve its low-pass filter effect To try to utilize.
（課題を解決するための手段） この目的を達成するために、本発明の解決手段は、車体
等の基台に取り付けられる基台取付部材と、エンジン等
のパワーユニットに取り付けられるパワーユニット取付
部材と、上記両取付部材間に設けられ、非圧縮性流体を
封入する弾性体により容積変化が可能なように密閉状に
形成された流体室と、該流体室の壁の一部を構成し、流
体室内の圧力変化に応じて変形する弾性膜とを備えた流
体封入式マウンティング装置に対し、上記パワーユニッ
ト取付部材および基台取付部材間に亘って設けた第１の
弾性部材を分割しかつ該分割部に設けられることで両取
付部材の双方に弾性支持されたマス部材と、該両取付部
材間に亘って設けた第２の弾性部材を分割しかつ該分割
部に設けられることで両取付部材に弾性支持され、上記
マス部材の所定値以下の振動を許容しつつ所定値以上の
振動変位を規制するストッパ部材とを設ける。(Means for Solving the Problem) In order to achieve this object, a solution means of the present invention is a base mounting member mounted on a base such as a vehicle body, a power unit mounting member mounted on a power unit such as an engine, A fluid chamber which is provided between both of the mounting members and is hermetically formed by an elastic body that encloses an incompressible fluid so that the volume can be changed, and a part of the wall of the fluid chamber. A fluid-filled mounting device having an elastic film that deforms in accordance with the change in pressure, the first elastic member provided between the power unit mounting member and the base mounting member is divided into A mass member elastically supported by both of the mounting members by being provided and a second elastic member provided between the mounting members are divided, and by being provided in the dividing portion, the mounting members are elastic. Support And a stopper member that holds the vibration of the mass member at a predetermined value or less and restricts the vibration displacement at a predetermined value or more.
そして、上記マス材およびストッパ部材の少なくとも一
方により上記流体室を２室に仕切るとともに、その分け
られた２室を互いに連通するオリフィスを上記マス部材
およびストッパ部材の何れか一方に設ける構成とする。The fluid chamber is partitioned into two chambers by at least one of the mass member and the stopper member, and an orifice for communicating the divided two chambers with each other is provided in either the mass member or the stopper member.
（作用） この構成により、本発明では、マス部材の所定値以下の
振動を許容しかつ所定値以上の振動変位を規制するスト
ッパ部材がパワーユニット取付部材および基台取付部材
の双方に対し、両部材間に亘る第２の弾性部材を分割し
て該分割部に設けられることで弾性支持され、これらマ
ス部材およびストッパ部材の少なくとも一方により流体
室が２室に仕切られ、その分けられた２室がマス部材お
よびストッパ部材の何れかに設けられたオリフィスによ
って互いに連通されているため、パワーユニットからの
振動周波数が上記オリフィス内における流体の固有の共
振周波数に一致したときには、該オリフィス内の流体が
加振振動と共振し、このオリフィス内の流体の共振によ
るダンピング効果（減衰効果）よりパワーユニットの振
動が減衰される。(Operation) With this configuration, in the present invention, the stopper member that allows the vibration of the mass member at the predetermined value or less and regulates the vibration displacement at the predetermined value or more is provided on both the power unit mounting member and the base mounting member. It is elastically supported by dividing the second elastic member across the space and being provided in the divided portion, and the fluid chamber is partitioned into two chambers by at least one of the mass member and the stopper member, and the divided two chambers are Since they are communicated with each other by the orifice provided in either the mass member or the stopper member, when the vibration frequency from the power unit matches the natural resonance frequency of the fluid in the orifice, the fluid in the orifice is excited. Resonates with the vibration, and the vibration of the power unit is damped due to the damping effect (damping effect) due to the resonance of the fluid in this orifice. To be done.
また、パワーユニットの加振周波数が上記オリフィス内
の流体の共振周波数よりも高くなると、そのオリフィス
を通しての流体の移動がなくなって、オリフィスは目詰
まり状態となる。そして、パワーユニットの加振周波数
がさらに上昇してマス部材の共振周波数に達したときに
は、その共振周波数域でマス部材が共振し、この共振に
よりマス部材は大きな振幅で振動しようとする。しか
し、その場合、上記オリフィスが目詰まり状態にあるた
め、上記マス部材およびそのストッパ部材の少なくとも
一方により区画形成された２室はオリフィスを通して流
体をやり取りせずに互いに独立した密閉状態となり、両
室の体積変化が生じず、このことによりストッパ部材の
制振効果が増大してマス部材の大振幅の振動が抑制さ
れ、よって基台に対する振動伝達率を低減できるのであ
る。Further, when the vibration frequency of the power unit becomes higher than the resonance frequency of the fluid in the orifice, the fluid does not move through the orifice, and the orifice becomes clogged. Then, when the vibration frequency of the power unit further rises to reach the resonance frequency of the mass member, the mass member resonates in the resonance frequency range, and the resonance causes the mass member to vibrate with a large amplitude. However, in that case, since the orifice is clogged, the two chambers partitioned and formed by at least one of the mass member and the stopper member are in a sealed state independent of each other without exchanging fluid through the orifice, and thus both chambers are closed. Therefore, the damping effect of the stopper member is increased, and the large amplitude vibration of the mass member is suppressed. Therefore, the vibration transmissibility to the base can be reduced.
そして、加振周波数がマス部材の共振点よりも高くなる
と、振動伝達率が大きく低下し、このことにより例えば
80〜100Hz以上のこもり音域の振動の伝達を良好に抑制
できて、いわゆるローパスフィルタ効果が得られる。Then, when the vibration frequency becomes higher than the resonance point of the mass member, the vibration transmissibility greatly decreases.
The transmission of vibration in the muffled sound range of 80 to 100 Hz or higher can be suppressed well, and a so-called low-pass filter effect can be obtained.
（実施例） 以下、本発明の実施例を図面に基づいて説明する。(Example) Hereinafter, the Example of this invention is described based on drawing.
第１図は本発明の実施例に係わるマウンティング装置Ｍ
を示し、このマウンティング装置Ｍは、パワーユニット
としての自動車用エンジンＥを基台としての車体Ｂ（い
ずれも部分的に示す）にマウンティングするために使用
されるものであり、エンジンＥの所定部位と車体Ｂの構
成部材（例えばクロスメンバやサイドメンバ）との間に
介在される。FIG. 1 shows a mounting device M according to an embodiment of the present invention.
This mounting device M is used for mounting an automobile engine E as a power unit on a vehicle body B (all of which are partially shown) as a base, and a predetermined portion of the engine E and a vehicle body are shown. It is interposed between the constituent members of B (for example, cross members and side members).
第１図において、１はエンジンＥに取り付けられるエン
ジン取付部材であって、該エンジン取付部材１は略ハッ
ト状の取付板２と、該取付板２の下面にその外周部にて
一体に固着された仕切壁としての略皿形状のストッパ支
持板３とからなり、これら取付板２とストッパ支持板３
との各外周部間には軟らかいゴム等からなる弾性膜４
（ダイヤフラム）が液密状に挟持されている。また、こ
のエンジン取付部材１における取付板２の中心部にはボ
ルト挿通孔５が貫通形成され、このボルト挿通孔５に挿
通された取付ボルト６をエンジンＥに螺合締結すること
により、エンジン取付部材１をエンジンＥに取り付ける
ようになされている。In FIG. 1, reference numeral 1 denotes an engine mounting member to be mounted on an engine E. The engine mounting member 1 is fixed to a substantially hat-shaped mounting plate 2 and a lower surface of the mounting plate 2 integrally at an outer peripheral portion thereof. And a stopper support plate 3 having a substantially dish shape as a partition wall, and these mounting plate 2 and stopper support plate 3
An elastic film 4 made of soft rubber or the like between the outer peripheral portions of
The (diaphragm) is held in a liquid-tight manner. Further, a bolt insertion hole 5 is formed through the center of the mounting plate 2 of the engine mounting member 1, and the mounting bolt 6 inserted into the bolt insertion hole 5 is screwed and fastened to the engine E to mount the engine. The member 1 is attached to the engine E.
一方、７は上記エンジン取付部材１の下方に配置され車
体Ｂに取り付けられる車体取付部材であって、該車体取
付部材７は円板状の取付板８と、該取付板８の上面にそ
の外周部にて一体に固着された略ハット状のストッパ支
持板９とからなり、上記取付板８の中心部にはボルト挿
通孔10が貫通形成され、そのボルト挿入孔10に挿通され
た取付ボルト11を車体Ｂに螺合締結することにより、車
体取付部材７を車体Ｂに取り付けるようになされてい
る。On the other hand, 7 is a vehicle body mounting member which is disposed below the engine mounting member 1 and is mounted on the vehicle body B. The vehicle body mounting member 7 includes a disc-shaped mounting plate 8 and an upper surface of the mounting plate 8 and an outer periphery thereof. And a stopper support plate 9 in a substantially hat shape integrally fixed to each other at a portion thereof. A bolt insertion hole 10 is formed at the center of the mounting plate 8 so that the mounting bolt 11 is inserted into the bolt insertion hole 10. The vehicle body mounting member 7 is mounted on the vehicle body B by screwing and fastening the vehicle body B to the vehicle body B.
上記エンジン取付部材１における取付板２の下面外周部
には円筒状のエンジン側弾性部材12の上端面が液密状に
一体に固着され、該弾性部材12の下端面は、内周面にリ
ング溝13aを有する円環状のマス部材13の上面に液密状
に一体に固着されている。また、このマス部材13の下面
には上記エンジン側弾性部材12と同様の円筒状の車体側
弾性部材14の上端面が液密状に一体に固着され、該弾性
部材14の下端面は上記車体部材７のストッパ支持板９の
上面外周部に液密状に固着されている。そして、上記エ
ンジン取付部材１における取付板２とストッパ支持板３
との間に弾性膜４、マス部材13、両弾性部材12,14およ
び車体取付部材７におけるストッパ支持板９に囲まれた
部分、つまりエンジン取付部材１と車体取付部材７との
間に弾性体としての弾性部材12,14によって容積可変の
密閉状とされた液体室15が区画形成され、この流体室15
には非圧縮性流体としての液体が封入されている。よっ
て、上記弾性膜４は液体室15の壁の一部を構成してい
て、液体室15内の圧力変化に応じて変形するようになさ
れている。また、弾性部材12,14はエンジン取付部材１
および車体取付部材７間に亘って設けた１つの第１の弾
性部材を中間部で２つの弾性部材12,14に分割した構造
となり、マス部材13は該分割部に設けられることで両取
付部材1,7に弾性支持されている。An upper end surface of a cylindrical engine-side elastic member 12 is integrally fixed in a liquid-tight manner to the outer peripheral portion of the lower surface of the mounting plate 2 of the engine mounting member 1, and the lower end surface of the elastic member 12 is a ring on the inner peripheral surface. It is integrally fixed in a liquid-tight manner to the upper surface of an annular mass member 13 having a groove 13a. An upper end surface of a cylindrical body-side elastic member 14 similar to the engine-side elastic member 12 is integrally fixed to the lower surface of the mass member 13 in a liquid-tight manner, and a lower end surface of the elastic member 14 is formed on the vehicle body. It is fixed in a liquid-tight manner to the outer peripheral portion of the upper surface of the stopper support plate 9 of the member 7. Then, the mounting plate 2 and the stopper support plate 3 in the engine mounting member 1
Between the engine mounting member 1 and the vehicle body mounting member 7, that is, a portion surrounded by the elastic film 4, the mass member 13, both elastic members 12, 14 and the stopper support plate 9 of the vehicle body mounting member 7. A liquid chamber 15 having a variable volume and being sealed is defined by the elastic members 12 and 14 as the fluid chamber 15
A liquid as an incompressible fluid is enclosed in the. Therefore, the elastic film 4 constitutes a part of the wall of the liquid chamber 15, and is deformed according to the change in the pressure in the liquid chamber 15. The elastic members 12 and 14 are the engine mounting member 1
Also, the structure is such that one first elastic member provided between the vehicle body mounting members 7 is divided into two elastic members 12 and 14 at the intermediate portion, and the mass member 13 is provided at the divided portions so that both mounting members are attached. It is elastically supported by 1,7.
また、上記マス部材13の内側にはマス部材13の振動を規
制するための円板よりなるストッパ部材16がその外周縁
部をマス部材13のリング溝13a内に遊嵌合した状態で配
設され、該ストッパ部材16の上面外周縁部とリング溝13
aの内壁上面とはリング状の弾性体17により、またスト
ッパ部材16の下面外周縁部とリング溝13aの内壁下面と
はリング状の弾性体18によりそれぞれ液密状に一体的に
固定されており、これらの弾性体17,18によりストッパ
部材16がマス部材13に弾性支持されている。また、この
ストッパ部材16の上面中心部と上記エンジン取付部材１
におけるストッパ支持板３の下面中心部とは円柱状のエ
ンジン側弾性部材19により、またストッパ部材16の下面
中心部と上記車体取付部材７におけるストッパ支持板９
の上面中心部とは円柱状の車体側弾性部材20によりそれ
ぞれ固定されており、弾性部材19,20はエンジン取付部
材１および車体取付部材７間に亘って設けた１つの第２
の弾性部材を２つの弾性部材19,20に分割した構造で、
ストッパ部材16は該分割部に設けられることで両取付部
材1,7に弾性部材19,20を介して弾性支持されている。以
上の構造により、上記液体室15はストッパ部材16により
上側室15aと下側実15bとの２室に仕切られている。A stopper member 16 made of a disk for restricting vibration of the mass member 13 is provided inside the mass member 13 with its outer peripheral edge portion loosely fitted in the ring groove 13a of the mass member 13. The outer peripheral edge of the upper surface of the stopper member 16 and the ring groove 13
The upper surface of the inner wall of a is fixed by a ring-shaped elastic body 17, and the outer peripheral edge of the lower surface of the stopper member 16 and the lower surface of the inner wall of the ring groove 13a are fixed by a ring-shaped elastic body 18 in a liquid-tight manner. The stopper member 16 is elastically supported by the mass member 13 by these elastic bodies 17 and 18. Further, the center portion of the upper surface of the stopper member 16 and the engine mounting member 1
The central portion of the lower surface of the stopper support plate 3 in FIG. 2 is formed by the cylindrical engine-side elastic member 19, and the central portion of the lower surface of the stopper member 16 and the stopper support plate 9 in the vehicle body mounting member 7 described above.
Is fixed to a central portion of the upper surface of the vehicle body by a column-shaped elastic member 20 on the vehicle body side, and the elastic members 19 and 20 are one second elastic member provided between the engine mounting member 1 and the vehicle body mounting member 7.
The elastic member of is divided into two elastic members 19 and 20,
The stopper member 16 is elastically supported by the mounting members 1 and 7 via elastic members 19 and 20 by being provided in the divided portion. With the above structure, the liquid chamber 15 is partitioned by the stopper member 16 into two chambers, the upper chamber 15a and the lower chamber 15b.
そして、上記ストッパ部材16の外周部には、上記上側室
15aと下側室15bとを互いに連通する、本発明でいうオリ
フィスとしての第１オリフィス21が貫通形成されてい
る。また、上記エンジン取付部材１における仕切壁とし
てのストッパ支持板３の外周部には第２オリフィス22が
貫通形成されており、上記第１オリフィス21内における
液体の共振周波数f1は上記マス部材13の共振周波数ｆよ
りも低く、自動車の走行路面や車輪のアンバランス等に
よってエンジンＥが上下方向に振動するいわゆるエンジ
ンシェイク時の約10〜15Hzの振動周波数と同程度に設定
されている。一方、第２オリフィス22での液体の共振周
波数f2はマス部材13に共振周波数ｆよりも高い80〜100H
z以上の値に設定されている。Then, on the outer peripheral portion of the stopper member 16, the upper chamber
A first orifice 21, which is an orifice according to the present invention, is formed to penetrate the lower chamber 15b and the lower chamber 15b. Further, a second orifice 22 is formed through the outer peripheral portion of the stopper support plate 3 as a partition wall in the engine mounting member 1, and the resonance frequency f 1 of the liquid in the first orifice 21 is the mass member 13 The resonance frequency f is lower than the resonance frequency f, and is set to the same level as the vibration frequency of about 10 to 15 Hz at the time of so-called engine shake in which the engine E vibrates in the vertical direction due to the road surface of the automobile, the imbalance of wheels, and the like. On the other hand, the resonance frequency f 2 of the liquid in the second orifice 22 is 80 to 100H, which is higher than the resonance frequency f in the mass member 13.
It is set to a value greater than or equal to z.
したがって、上記実施例においては、エンジンＥの運転
時の振動に伴い、そのエンジンＥからの加振力によりマ
ウンティング装置Ｍにおける第１および第２オリフィス
21,22内の液体ならびにマス部材13が振動し、第２図に
示すように、エンジン振動の周波数が第１オリフィス21
内の液体の固有の共振周波数f1（約10〜15Hz）と一致す
ると、その第１オリフィス21内の液体の共振に伴うダン
ピング効果により車体Ｂへの振動伝達率が低減され、よ
ってエンジンシェイクを抑制することができる。Therefore, in the above embodiment, the first and second orifices in the mounting device M are generated by the vibration force from the engine E as the engine E is vibrating during operation.
The liquid in 21, 21 and the mass member 13 vibrate, and as shown in FIG.
When the resonance frequency f 1 (about 10 to 15 Hz) peculiar to the liquid inside is matched, the vibration transmissibility to the vehicle body B is reduced due to the damping effect due to the resonance of the liquid inside the first orifice 21, so that the engine shake is prevented. Can be suppressed.
また、エンジン振動の周波数が上記第１オリフィス21内
の液体の共振周波数f1よりも高くなると、該第１オリフ
ィス21はその内部を液体が流れなくなるいわゆる目詰ま
り状態となる。さらに振動数が高くなって、マス部材13
の重さや弾性部材12,14の弾性係数等に応じて決定され
る所定周波数ｆに一致すると該マス部材13が共振する。
そして、第２図に破線にて示すように、この共振周波数
ｆよりも低い周波数域では、マス部材13はエンジンＥか
らの振動と同立相で振動し、この同位相の振動に伴い車
体Ｂへの振動伝達率が上昇して上記マス部材13の共振点
ｆでピークとなる。一方、振動周波数がマス部材13の共
振点を越えてこもり音域まで上昇すると、該マス部材13
の振動はエンジンＥの振動に対し逆位相になってマス材
13が停止状態となり、このマス部材13の停止により車体
Ｂへの振動が遮断され、マウンティング装置Ｍはローパ
スフィルタとなって、高周波騒音としてのこもり音域で
の車体Ｂへの振動伝達率を低下させることができる。When the frequency of engine vibration becomes higher than the resonance frequency f 1 of the liquid in the first orifice 21, the first orifice 21 is in a so-called clogging state in which the liquid does not flow inside. The frequency is even higher and the mass member 13
The mass member 13 resonates when it coincides with a predetermined frequency f determined according to the weight of the elastic member and the elastic coefficients of the elastic members 12 and 14.
Then, as indicated by the broken line in FIG. 2, in the frequency range lower than the resonance frequency f, the mass member 13 vibrates in the same phase as the vibration from the engine E, and the body B is vibrated in accordance with the vibration in the same phase. The vibration transmissibility of the mass member 13 increases and reaches a peak at the resonance point f of the mass member 13. On the other hand, when the vibration frequency exceeds the resonance point of the mass member 13 and rises to the muffled sound range, the mass member 13
Vibration is in the opposite phase to the vibration of engine E
When the mass member 13 is stopped, the vibration to the vehicle body B is blocked by the stop of the mass member 13, and the mounting device M serves as a low pass filter to reduce the vibration transmissibility to the vehicle body B in the muffled sound range as high frequency noise. be able to.
この場合、上記第１オリフィス21は液体室15を上側室15
aと下側室15bとに仕切るストッパ部材16に設けられ、該
ストッパ部材16はエンジン取付部材１および車体取付部
材７に弾性支持されているとともに上記マス部材13にそ
の振動を規制するように連結されているため、上記第１
オリフィス21が目詰まり状態にあるときには、上記上側
室15aと下側室15bとの連通が遮断されて、各室15a,15b
は各々独立して密閉状態になる。このため、ストッパ部
材16は移動不能に両取付部材1,7に固定保持され、この
停止状態にあるストッパ部材16の規制により、マス部材
13が大きな振幅で振動しようとしてもその振動が抑えら
れることとなり、よって同図に実線にて示すようにマス
部材13の共振周波数ｆ域での車体Ｂに対する振動伝達率
を有効に低減することができる。In this case, the first orifice 21 causes the liquid chamber 15 to move to the upper chamber 15
The stopper member 16 is provided for partitioning a into a lower chamber 15b, and the stopper member 16 is elastically supported by the engine mounting member 1 and the vehicle body mounting member 7 and is connected to the mass member 13 so as to regulate its vibration. Therefore, the first
When the orifice 21 is in a clogged state, the communication between the upper chamber 15a and the lower chamber 15b is cut off, and each chamber 15a, 15b is closed.
Are independently sealed. Therefore, the stopper member 16 is immovably fixed and held by both the mounting members 1 and 7, and the mass member is regulated by the stopper member 16 in the stopped state.
Even if 13 vibrates with a large amplitude, the vibration is suppressed, so that the vibration transmissibility of the mass member 13 to the vehicle body B in the resonance frequency f range can be effectively reduced as shown by the solid line in the figure. it can.
また、エンジンＥからの振動周波数がさらに高くなって
第２オリフィス22での液体の共振周波数f2に達したとき
には、その第２オリフィス22内の液体が共振し、この液
体の共振により、上記こもり音域での振動伝達率をさら
に低下させることができる。なお、第２図で、一点鎖線
はエンジン取付部材１と車体取付部材７との間に弾性部
材のみを介設したときの振動伝達率特性を示している。Further, when the vibration frequency from the engine E further increases and reaches the resonance frequency f 2 of the liquid in the second orifice 22, the liquid in the second orifice 22 resonates, and the resonance of the liquid causes the above-mentioned mist. The vibration transmissibility in the sound range can be further reduced. In FIG. 2, the alternate long and short dash line indicates the vibration transmissibility characteristic when only the elastic member is provided between the engine mounting member 1 and the vehicle body mounting member 7.
尚、上記実施例において、エンジン取付部材１のストッ
パ支持板３に設けられる第２オリフィス22は必ずしも必
須のものではなく、それに代えて大きい口径の連通孔を
形成してもよい。その場合、車体Ｂに対する共振伝達率
特性は第３図に示すようになり、こもり音域での振動伝
達率がマス部材13による伝達率特性のみの影響を受け
る。したがって、振動伝達率をより一層低下できる点で
上記実施例の方が好ましい。In the above embodiment, the second orifice 22 provided on the stopper support plate 3 of the engine mounting member 1 is not always essential, and instead, a communication hole having a large diameter may be formed. In that case, the resonance transmissibility characteristic for the vehicle body B is as shown in FIG. 3, and the vibration transmissibility in the muffled sound range is affected only by the transmissivity characteristic of the mass member 13. Therefore, the above-mentioned embodiment is preferable in that the vibration transmissibility can be further reduced.
また、上記第２オリフィス22内の液体の共振周波数f2を
変更してもよく、その共振周波数f2を例えばマス部材13
の共振周波数ｆに一致させると、マス部材13の共振周波
数ｆ域において車体Ｂに対する振動伝達率を大きく低下
させることができる。Further, the resonance frequency f 2 of the liquid in the second orifice 22 may be changed, and the resonance frequency f 2 may be set to, for example, the mass member 13
When the resonance frequency f of the mass member 13 is made equal to that of the mass member 13, the vibration transmissibility of the mass member 13 to the vehicle body B can be greatly reduced.
（他の実施例） 本発明は上記実施例に限定されるものではなく、例えば
第４図および第５図に示すように種々の実施例をも包含
するものである。尚、これらの実施例において第１図と
同じ部分については同じ符号を付してその詳細な説明は
省略する。(Other Embodiments) The present invention is not limited to the above-described embodiments, but also includes various embodiments as shown in FIGS. 4 and 5, for example. In these embodiments, the same parts as those in FIG. 1 are designated by the same reference numerals, and detailed description thereof will be omitted.
すなわち、第４図に示す実施例は、エンジン取付部材１
と車体取付部材７′との間に弾性支持されるマス部材1
3′を中央側に、またそのストッパ部材16′を外周側に
それぞれ配置したものである。この場合、マス部材13′
は円柱状に形成され、その外周面にフランジ部13′ｂが
突設されている。一方、ストッパ部材16′は内周面にリ
ング溝16′ａを有する円環状に形成され、そのリング溝
16′ａの内壁上下面にマス部材13′のフランジ部13′ｂ
が弾性支持されている。よって、液体室15は上記マス部
材13′により上側室15aと下側室15bとに仕切られ、同マ
ス部材13′に第１オリフィス21′が貫通形成されてい
る。That is, the embodiment shown in FIG.
Mass member 1 elastically supported between the vehicle body mounting member 7'and the vehicle body mounting member 7 '
3'is arranged on the center side, and its stopper member 16 'is arranged on the outer peripheral side. In this case, the mass member 13 '
Is formed in a columnar shape, and a flange portion 13'b is projectingly provided on the outer peripheral surface thereof. On the other hand, the stopper member 16 'is formed in an annular shape having a ring groove 16'a on the inner peripheral surface thereof.
The flange portion 13'b of the mass member 13 'is provided on the upper and lower surfaces of the inner wall of 16'a.
Is elastically supported. Therefore, the liquid chamber 15 is divided into the upper chamber 15a and the lower chamber 15b by the mass member 13 ', and the first orifice 21' is formed through the mass member 13 '.
したがって、この実施例では、マス部材13′の共振点よ
りも高いこもり音となる周波数において、マス部材13′
が逆位相で振動するため、該マス部材13′により区画形
成された下側室15b内の圧力は振動伝達率を打ち消す方
向に作用し、よってこもり音域での振動伝達率をより一
層低減できる利点がある。Therefore, in this embodiment, the mass member 13 'is at a frequency that produces a muffled sound higher than the resonance point of the mass member 13'.
Vibrate in the opposite phase, the pressure in the lower chamber 15b partitioned and formed by the mass member 13 'acts in a direction of canceling the vibration transmissibility, thereby further reducing the vibration transmissibility in the muffled sound range. is there.
また、第５図に示す実施例では、上記最初に説明した実
施例と同様の構成において、ストッパ部材16をマス部材
13に弾性支持するのではなく、ストッパ部材16の上下面
外周縁部に固着したリング状の弾性体23,24によってマ
ス部材13のリング溝13a内に所定のクリアランスｄをあ
けて移動自在に遊嵌合したものである。この場合、スト
ッパ部材16の外周縁部とマス部材13のリング溝13aの内
壁面との間の間隙により第１オリフィス21″が構成され
る。また、ストッパ部材16はエンジン取付部材１および
車体取付部材７に対し円筒状の弾性部材19′,20′を介
して弾性支持され、その弾性部材19,20の外側に液体室1
5が、内側に別個の液体室25がそれぞれ形成されてお
り、ストッパ部材16の液体室25に臨む中心部に第２オリ
フィス22が貫通形成されている。Further, in the embodiment shown in FIG. 5, the stopper member 16 is replaced by the mass member in the same configuration as the first embodiment described above.
Rather than being elastically supported by 13, the ring-shaped elastic bodies 23, 24 fixed to the upper and lower peripheral edges of the stopper member 16 are movably movable with a predetermined clearance d provided in the ring groove 13a of the mass member 13. It has been fitted. In this case, the gap between the outer peripheral edge portion of the stopper member 16 and the inner wall surface of the ring groove 13a of the mass member 13 constitutes the first orifice 21 ″. The member 7 is elastically supported via cylindrical elastic members 19 'and 20', and the liquid chamber 1 is provided outside the elastic members 19 and 20.
5, a separate liquid chamber 25 is formed inside, and a second orifice 22 is formed at the center of the stopper member 16 facing the liquid chamber 25.
したがって、本実施例でも、上記最初の実施例と同様の
作用効果を奏することができる。Therefore, also in this embodiment, it is possible to obtain the same effects as those of the first embodiment.
尚、上記各実施例では、エンジン取付部材１を上側に、
車体取付部材７を下側にそれぞれ配置しているが、両取
付部材1,7の位置を逆転させてもよく、上記各実施例と
同様の作用効果を奏することができる。In each of the above embodiments, the engine mounting member 1 is placed on the upper side,
Although the vehicle body mounting member 7 is arranged on the lower side, respectively, the positions of both the mounting members 1 and 7 may be reversed, and the same effect as each of the above embodiments can be obtained.
また、上記各実施例では、エンジンＥを車体Ｂに弾性支
持するマウンティング装置Ｍの場合を説明したが、本発
明は、振動や騒音等の低減を図るべく、エンジン以外の
パワーユニットを基台に弾性支持するようにしたマウン
ティング装置にも適用できるのはいうまでもない。Further, in each of the above-described embodiments, the case of the mounting device M in which the engine E is elastically supported on the vehicle body B has been described. However, in order to reduce vibration, noise, etc., the present invention uses a power unit other than the engine as a base. It goes without saying that it can also be applied to a mounting device that is designed to support.
（発明の効果） 以上説明したように、本発明によると、パワーユニット
と基台との間に配設され、それらパワーユニットおよび
基台への取付部材間に弾性体による容積可変の流体室と
弾性膜とを備えた流体封入式マウンティング装置に対
し、上記両取付部材間にマス部材と該マス部材の所定値
以上の振動変位のみを規制するストッパ部材とを、両取
付部材間に亘る第１及び第２の弾性部材を分割して該分
割部に設けられる構造で弾性支持するとともに、該マス
部材およびストッパ部材の少なくとも一方により流体室
を２室に仕切り、その両室を互いに連通するオリフィス
をマス部材およびストッパ部材の少なくとも一方に設け
たことにより、オリフィスでの流体の共振現象に伴うダ
ンピング効果によりエンジンシェイク等パワーユニット
の特定周波数の振動を減衰することができるとともに、
マス部材の共振周波数域ではオリフィスの目詰まりによ
り流体室の両室を独立した密閉状態としてマス部材の大
振幅の振動を抑制しつつ、マス部材の共振点よりも高い
こもり音等となる周波数での基台に対する振動伝達率を
抑えて、ローパスフィルタ効果を確保でき、よって簡単
な構造でもってマウンティング装置の遮音性、制振性を
大幅に向上させることができる。(Effects of the Invention) As described above, according to the present invention, the fluid chamber and the elastic film, which are disposed between the power unit and the base, and whose volume is variable by the elastic body, are provided between the power unit and the mounting member to the base. And a stopper member for restricting only a vibration displacement of the mass member which is equal to or more than a predetermined value, between the mounting members. The two elastic members are divided and elastically supported by a structure provided in the divided portion, and at least one of the mass member and the stopper member divides the fluid chamber into two chambers, and an orifice communicating the both chambers with each other is formed in the mass member. Since it is provided on at least one of the stopper member and the stopper member, the damping effect associated with the resonance phenomenon of the fluid at the orifice causes a characteristic of a power unit such as an engine shake. It is possible to damp constant frequency vibrations,
In the resonance frequency range of the mass member, the orifices are clogged so that both chambers of the fluid chamber are closed independently to suppress large-amplitude vibrations of the mass member, while at a frequency that produces muffled noise higher than the resonance point of the mass member. The vibration transmissibility to the base can be suppressed to ensure the low-pass filter effect, and thus the sound insulation and vibration damping of the mounting device can be greatly improved with a simple structure.
第１図ないし第３図は本発明の一実施例を示し、第１図
はマウンティング装置の断面図、第２図はマウンティン
グ装置の振動周波数に対する振動伝達率特性を示す特性
図、第３図は第２オリフィスを省略した変形例における
同特性図である。第４図および第５図はそれぞれ他の実
施例を示す第１図相当図である。 M,M′,M″……マウンティング装置、１……エンジン取
付部材、４……弾性膜、７……車体取付部材、12,12′,
14,14′……弾性部材、13,13′……マス部材、15……液
体室、15a……上側室、15b……下側室、16,16′……ス
トッパ部材、21,21′,21″……第１オリフィス、22……
第２オリフィス、Ｅ……エンジン、Ｂ……車体。1 to 3 show an embodiment of the present invention, FIG. 1 is a sectional view of a mounting device, FIG. 2 is a characteristic diagram showing a vibration transmissibility characteristic with respect to a vibration frequency of the mounting device, and FIG. It is the same characteristic view in the modification which abbreviate | omitted the 2nd orifice. FIGS. 4 and 5 are views corresponding to FIG. 1 showing another embodiment, respectively. M, M ', M "... Mounting device, 1 ... Engine mounting member, 4 ... Elastic membrane, 7 ... Vehicle mounting member, 12,12',
14,14 '... elastic member, 13,13' ... mass member, 15 ... liquid chamber, 15a ... upper chamber, 15b ... lower chamber, 16,16 '... stopper member, 21,21', 21 ″ …… First orifice, 22 ……
Second orifice, E ... engine, B ... vehicle body.
Claims (1)
台にマウンティングするマウンティング装置であって、 基台に取り付けられる基台取付部材と、 パワーユニットに取り付けられるパワーユニット取付部
材と、 上記両取付部材間に設けられ、非圧縮性流体を封入する
弾性体により容積変化が可能なように密閉状に形成され
た流体室と、 該流体の壁の一部を構成し、流体室内の圧力変化に応じ
て変形する弾性膜と、 上記両取付部材間に亘って設けた第１の弾性部材を分割
しかつ該分割部に設けられることで両取付部材に弾性支
持されたマス部材と、 上記両取付部材間に亘って設けた第２の弾性部材を分割
しかつ該分割部に設けられることで両取付部材に弾性支
持され、上記マス部材の所定値以下の振動を許容しつつ
所定値以上の振動変位を規制するストッパ部材とを備
え、 上記流体室は上記マス部材およびストッパ部材の少なく
とも一方により２室に仕切られ、かつ該両室は上記マス
部材およびストッパ部材の何れか一方に設けたオリフィ
スを介して連通されていることを特徴とするパワーユニ
ットのマウンティング装置。1. A mounting device for mounting a power unit such as an engine on a base such as a vehicle body, the base mounting member being mounted on the base, the power unit mounting member being mounted on the power unit, and between the mounting members. A fluid chamber that is provided and is hermetically formed so that the volume can be changed by an elastic body that encloses an incompressible fluid, and that constitutes a part of the wall of the fluid and that deforms according to the pressure change in the fluid chamber. Between the elastic film and the mass member elastically supported by the two mounting members by dividing the first elastic member provided between the both mounting members and being provided in the dividing portion. By dividing the second elastic member provided over the entire length and being provided in the divided portion, the second elastic member is elastically supported by both mounting members, and the vibration variation of the mass member or more is allowed while allowing the vibration of the mass member or less of the predetermined value or less. And a stopper member for restricting the space, the fluid chamber is partitioned into two chambers by at least one of the mass member and the stopper member, and both chambers are provided with an orifice provided in one of the mass member and the stopper member. A power unit mounting device characterized by being communicated with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61267131A JPH0799188B2 (en) | 1986-11-10 | 1986-11-10 | Power unit mounting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61267131A JPH0799188B2 (en) | 1986-11-10 | 1986-11-10 | Power unit mounting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63120934A JPS63120934A (en) | 1988-05-25 |
| JPH0799188B2 true JPH0799188B2 (en) | 1995-10-25 |
Family
ID=17440504
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61267131A Expired - Lifetime JPH0799188B2 (en) | 1986-11-10 | 1986-11-10 | Power unit mounting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0799188B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4120841C1 (en) * | 1991-06-25 | 1992-11-05 | Fa. Carl Freudenberg, 6940 Weinheim, De | |
| FR2868821B1 (en) * | 2004-04-08 | 2008-02-15 | Hutchinson Sa | ANTI-VIBRATION DEVICE |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59108841U (en) * | 1983-01-13 | 1984-07-23 | 日産自動車株式会社 | Vibration isolator |
| JPS60175931U (en) * | 1984-05-01 | 1985-11-21 | 豊田合成株式会社 | Liquid-filled vibration isolator |
-
1986
- 1986-11-10 JP JP61267131A patent/JPH0799188B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63120934A (en) | 1988-05-25 |
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