JPH0788873B2 - Power unit mounting device - Google Patents

Power unit mounting device

Info

Publication number
JPH0788873B2
JPH0788873B2 JP61267130A JP26713086A JPH0788873B2 JP H0788873 B2 JPH0788873 B2 JP H0788873B2 JP 61267130 A JP61267130 A JP 61267130A JP 26713086 A JP26713086 A JP 26713086A JP H0788873 B2 JPH0788873 B2 JP H0788873B2
Authority
JP
Japan
Prior art keywords
mounting
engine
power unit
fluid
fluid chamber
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
Application number
JP61267130A
Other languages
Japanese (ja)
Other versions
JPS63120933A (en
Inventor
伸 竹原
晴幸 谷口
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.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
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 Mazda Motor Corp filed Critical Mazda Motor Corp
Priority to JP61267130A priority Critical patent/JPH0788873B2/en
Publication of JPS63120933A publication Critical patent/JPS63120933A/en
Publication of JPH0788873B2 publication Critical patent/JPH0788873B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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)
  • 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】 （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、該室と上記流体室と
を連通する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 in response to a pressure change in the fluid chamber, and the elastic film inside the fluid chamber. Is provided so as to define a chamber having a wall as a partition, and a partition wall having an orifice that communicates the chamber with the fluid chamber,
The engine shake is suppressed by a vibration damping action (damping action) that accompanies the resonance phenomenon of the fluid at the orifice.

（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、このマス部材およ
び弾性部材で流体室の壁の一部を構成し、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 and the elastic member constitute a part of the wall of the fluid chamber, and the resonance frequency of the mass member is set higher than the resonance frequency of the fluid at the orifice. Uses the phenomenon of vibrating in anti-phase so as to block vibration in the frequency range higher than its resonance frequency, in addition to the original effect of the fluid-filled mounting device (damping effect for engine shake etc.) It becomes a muffled sound that is higher than the resonance frequency and contains engine combustion noise and gear noise.
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、エンジンからの加振周波数がオリ
フィスでの流体の共振点よりも高くなると、オリフィス
での流体の往来がなくなって該オリフィスはいわゆる目
詰まり状態となるため、流体室内の圧力上昇を免れ得
ず、その分、車体への振動伝達率が上昇する。しかし、
このような振動伝達率の上昇はマウンティング装置本来
の狙いからみると改善することが望ましい。However, in that case, when the vibration frequency from the engine becomes higher than the resonance point of the fluid in the orifice, the fluid does not pass through the orifice and the orifice becomes a so-called clogging state, so that the pressure rise in the fluid chamber is increased. It cannot be escaped, and the vibration transmissibility to the vehicle body increases accordingly. But,
It is desirable to improve such an increase in vibration transmissibility from the original purpose of the mounting device.

そこで、本発明は斯かる諸点に鑑みてなされたものであ
って、その目的とするところは、上記したオリフィスの
目詰まり状態における流体室の圧力上昇を適宜手段によ
って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
の共振点よりも高い周波数域で振動伝達率を低減できる
というローパスフィルタ効果をより一層向上させるよう
にすることにある。Therefore, the present invention has been made in view of such various points, and an object thereof is to suppress the pressure increase of the fluid chamber in the above-described clogging state of the orifice by appropriate means, It is said that the damping effect due to the resonance phenomenon of the fluid at the orifice of the fluid filled mounting device can suppress the vibration of the power unit at a predetermined frequency such as an engine shake and reduce the vibration transmissibility in the frequency range higher than the resonance point of the mass member. It is to further improve the low-pass filter effect.

（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、上記
したように流体室の壁をマス部材自体で構成するのでは
なく、該マス部材に弾性支持された可動部材で構成する
こととする。(Means for Solving the Problem) In order to achieve this object, the solution means of the present invention does not constitute the wall of the fluid chamber by the mass member itself as described above, but is elastically supported by the mass member. It will be composed of movable members.

具体的には、本発明の前提は、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部材に
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
ィング装置である。Specifically, the premise of the present invention is that 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, and a non-compressible fluid provided between the both mounting members. A fluid chamber that is hermetically formed by an elastic member that encloses the fluid chamber so that the volume can be changed; and an elastic film that forms a part of the wall of the fluid chamber and that deforms according to the pressure change in the fluid chamber. It is a fluid-filled mounting device.

そして、このマウンティング装置に対し、上記流体室
に、オリフィスを有する仕切壁を流体室内部に上記弾性
膜を壁とする室を区画形成するようにかつ上記オリフィ
スにより該室と上記流体室とを連通するように配設す
る。With respect to this mounting device, a partition wall having an orifice is formed in the fluid chamber so as to define a chamber having the elastic film as a wall in the fluid chamber, and the chamber communicates with the fluid chamber by the orifice. It is arranged as follows.

また、上記パワーユニット取付部材および基台取付部材
間に亘る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を設ける。Further, the elastic member extending between the power unit mounting member and the base mounting member is divided and a mass member elastically supported by both mounting members is provided by being provided in the divided portion.

さらに、上記流体室の壁の他の部分を構成し、上記マス
部材に弾性支持された可動部材を設ける構成とする。Further, the other part of the wall of the fluid chamber is formed, and a movable member elastically supported by the mass member is provided.

（作用） 上記の構成により、本発明では、パワーユニットからの
振動周波数が流体室内に配設された仕切壁のオリフィス
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) According to the present invention, when the vibration frequency from the power unit matches the natural resonance frequency of the fluid in the orifice of the partition wall arranged in the fluid chamber, the fluid in the orifice resonates. The vibration of the power unit is damped by the damping effect (damping effect) due to the resonance of the fluid in the orifice.

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。パワーユニットの振動周波数がさらに
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、パワーユニットおよび基台取付部材間
で両取付部材にそれぞれ弾性部材の分割部両側部により
弾性支持されているマス部材が共振し、この共振点を境
にマス部材の振動の位相が反転して、それまで同位相で
あったものが逆位相に変わり、基台に対する振動伝達率
は上記共振周波数域でピークとなるとともに、その共振
点よりも高い周波数域では大きく低下し、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
られることとなる。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. When the vibration frequency of the power unit further rises and reaches the resonance frequency of the mass member, in the resonance frequency range, both mounting members between the power unit and the base mounting member are elastically supported by both side portions of the elastic member dividing portion. The mass member resonates, and the phase of the vibration of the mass member is inverted at this resonance point, and the phase that was the same until then changes to the opposite phase, and the vibration transmissibility to the base is in the above resonance frequency range. Along with the peak, it greatly decreases in the frequency range higher than the resonance point, which allows good suppression of vibration transmission in the muffled sound range of, for example, 80 to 100 Hz, and a so-called low-pass filter effect can be obtained. Become.

そして、この場合、上記マス部材には流体室の壁を構成
する可動部材が弾性支持されているため、上記マス部材
の共振点よりも低い周波数域では、その可動部材が流体
室内の圧力を低下させるようにマス部材に対して相対的
に移動する一方、共振点よりも高い周波数域では、逆位
相の振動によって停止状態にあるマス部材に対して可動
部材のみが相対的に移動する。この可動部材のマス部材
に対する相対移動によりマス部材の共振点の上下両側の
周波数域では流体室内の圧力上昇が効果的に抑えられ、
このことにより、上記こもり音域での振動伝達率をさら
に低下できるのである。In this case, since the movable member forming the wall of the fluid chamber is elastically supported by the mass member, the movable member lowers the pressure in the fluid chamber in the frequency range lower than the resonance point of the mass member. In the frequency range higher than the resonance point, only the movable member relatively moves with respect to the mass member in the stopped state, while moving relatively to the mass member as described above. Due to the relative movement of the movable member with respect to the mass member, the pressure rise in the fluid chamber is effectively suppressed in the frequency regions above and below the resonance point of the mass member,
As a result, the vibration transmissibility in the muffled sound range can be further reduced.

（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に取り付けられる略ハ
ット状のエンジン取付板であって、該取付板１の中心部
にはボルト挿通孔２が貫通形成され、このボルト挿通孔
２に挿通された取付ボルト３をエンジンＥに螺合締結す
ることにより、エンジン取付板１をエンジンＥに取り付
けるようになされている。４は上記エンジン取付板１の
下方に配置され車体Ｂに取り付けられる円板状の車体取
付板であって、その中心部にはボルト挿通孔５が貫通形
成され、そのボルト挿通孔５に挿通された取付ボルト６
を車体Ｂに螺合締結することにより、車体取付板４が車
体Ｂに取り付けられる。In FIG. 1, reference numeral 1 denotes a substantially hat-shaped engine mounting plate to be mounted on the engine E. A bolt insertion hole 2 is formed at the center of the mounting plate 1 and is inserted into the bolt insertion hole 2. The engine mounting plate 1 is mounted on the engine E by screwing the mounting bolts 3 onto the engine E. Reference numeral 4 denotes a disk-shaped vehicle body mounting plate which is disposed below the engine mounting plate 1 and is mounted on the vehicle body B. A bolt insertion hole 5 is formed at the center of the disk body mounting plate 4 and is inserted into the bolt insertion hole 5. Mounting bolt 6
The vehicle body mounting plate 4 is mounted on the vehicle body B by screwing and fastening the vehicle body B on the vehicle body B.

上記エンジン取付板１の下面には軟らかいゴム等からな
る弾性膜７（ダイヤフラム）を介して略皿形状の仕切板
８が液密状に一体に固着され、該仕切板８の中心部には
オリフィス９が貫通形成されている。また、上記仕切板
８の下面外周部には円筒状のエンジン側弾性部材10の上
端面が液密状に一体に固着され、該弾性部材10の下端面
は、内周面にリング溝11aを有する円環状のマス部材11
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11の下面には上記エンジン側弾性部材10と同様の
円筒状の車体側弾性部材12の上端面が一体に固着され、
該弾性部材12の下端面は上記車体取付板４の上面外周部
に固着されている。A substantially plate-shaped partition plate 8 is integrally fixed to the lower surface of the engine mounting plate 1 in a liquid-tight manner via an elastic film 7 (diaphragm) made of soft rubber or the like, and an orifice is provided at the center of the partition plate 8. 9 is formed through. The upper end surface of a cylindrical engine-side elastic member 10 is integrally fixed to the outer peripheral surface of the lower surface of the partition plate 8 in a liquid-tight manner, and the lower end surface of the elastic member 10 has a ring groove 11a on its inner peripheral surface. An annular mass member 11 having
Is integrally fixed in a liquid-tight manner to the upper surface of the. Further, on the lower surface of the mass member 11, the upper end surface of a cylindrical body-side elastic member 12 similar to the engine-side elastic member 10 is integrally fixed,
The lower end surface of the elastic member 12 is fixed to the outer peripheral portion of the upper surface of the vehicle body mounting plate 4.

さらに、上記マス部材11の内側には円板よりなる可動板
13がその外周縁部をマス部材11のリング溝11a内に遊嵌
合した状態で配設され、該可動板13の上面外周縁部とリ
ング溝11aの内壁上面とはリング状の弾性体14により、
また可動板13の下面外周縁部とリング溝11aの内壁下面
とはリング状の弾性体15によりそれぞれ一体的に固定さ
れており、これらの弾性体14,15により可動板13がマス
部材11に弾性支持されている。Further, a movable plate made of a disc is provided inside the mass member 11.
13 is disposed with its outer peripheral edge portion loosely fitted in the ring groove 11a of the mass member 11, and the upper peripheral edge portion of the movable plate 13 and the inner wall upper surface of the ring groove 11a are ring-shaped elastic bodies 14 Due to
Further, the outer peripheral edge of the lower surface of the movable plate 13 and the lower surface of the inner wall of the ring groove 11a are integrally fixed by ring-shaped elastic bodies 15, and the movable plate 13 is attached to the mass member 11 by these elastic bodies 14, 15. Elastically supported.

そして、上記エンジン取付板１と車体取付板４との間に
おいて上記弾性膜７、エンジン側弾性部材10、マス部材
11の上半部、上側の弾性体14および可動板13に囲まれた
部分に液体室16が上記エンジン側弾性部材10により容積
変化が可能なように密閉状に形成され、この液体室16に
は非圧縮性流体としての液体が封入されている。Then, between the engine mounting plate 1 and the vehicle body mounting plate 4, the elastic film 7, the engine side elastic member 10, the mass member
A liquid chamber 16 is hermetically formed in a portion surrounded by the upper half of the upper portion 11, the upper elastic body 14 and the movable plate 13 so that the volume can be changed by the engine side elastic member 10. Is filled with a liquid as an incompressible fluid.

よって、上記弾性膜７は液体室16の壁の一部を構成して
いて、液体室16内の圧力変化に応じて変形する。また、
液体室16は上記仕切板８により上側室16aと下側室16bと
に区画され、上記上側室16aはその壁の一部を上記弾性
膜７としている。さらに、上記可動板13は液体室16の壁
の他の部分としての下壁を構成している。また、上記両
取付部材10,12はエンジン取付板１および車体取付板４
間に亘って設けられた１つの弾性部材を中間部で２つの
弾性部材10,12に分割した構造となり、マス部材11はそ
の分割部に設けられることでエンジン取付板１および車
体取付部材４の双方に弾性支持されている。Therefore, the elastic film 7 constitutes a part of the wall of the liquid chamber 16 and is deformed according to the change in pressure in the liquid chamber 16. Also,
The liquid chamber 16 is divided into an upper chamber 16a and a lower chamber 16b by the partition plate 8, and the upper chamber 16a has a part of the wall thereof as the elastic film 7. Further, the movable plate 13 constitutes a lower wall as another part of the wall of the liquid chamber 16. Further, the both mounting members 10 and 12 are the engine mounting plate 1 and the vehicle body mounting plate 4.
It has a structure in which one elastic member provided over the space is divided into two elastic members 10 and 12 at the intermediate portion, and the mass member 11 is provided in the divided portion so that the engine mounting plate 1 and the vehicle body mounting member 4 are separated. Both sides are elastically supported.

尚、上記オリフィス９内の液体の共振周波数は、マス部
材11の共振周波数よりも低く、自動車の走行路面や車輪
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の周波数（約10〜15Hz）と
同程度に設定されている。また、図中、17は車体取付板
４に開口された空気抜き孔で、車体取付板４と可動板13
との間の密閉空間を外部に連通させて可動板13の移動抵
抗をなくすものである。The resonance frequency of the liquid in the orifice 9 is lower than the resonance frequency of the mass member 11, and the so-called engine shake frequency (about 10 to 10) at which the engine E vibrates vertically due to the road surface of the automobile, wheel unbalance, or the like. 15Hz) is set to the same level. Further, in the figure, reference numeral 17 denotes an air vent hole opened in the vehicle body mounting plate 4, which includes the vehicle body mounting plate 4 and the movable plate 13
The closed space between and is communicated with the outside to eliminate the movement resistance of the movable plate 13.

したがって、上記実施例においては、エンジンＥの運転
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におけるオリフィス９内の液体およびマ
ス部材11が振動し、エンジン振動の周波数が約10〜15Hz
となるエンジンシェイク時にオリフィス９内の液体が共
振して、このオリフィス９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-described embodiment, the liquid in the orifice 9 and the mass member 11 in the mounting device M are vibrated by the vibration of the engine E due to the vibration of the engine E, and the frequency of the engine vibration is about 10 to 10. 15Hz
During the engine shake, the liquid in the orifice 9 resonates, and the damping effect accompanying the resonance of the liquid in the orifice 9 reduces the vibration transmissibility to the vehicle body B, so that the engine shake can be suppressed.

また、エンジン振動の周波数が上記オリフィス９内の液
体の共振周波数よりも高くなると、オリフィス９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11の重さや弾
性部材10,12の弾性係数等に応じて決定される所定周波
数に一致すると該マス部材11が共振する。そして、第２
図に破線にて示すように、この共振周波数よりも低い周
波数域では、マス部材11はエンジンＥからの振動と同位
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11の共振点でピークとな
る。一方、振動周波数がマス部材11の共振点を越えて約
80〜100Hz以上のこもり音域まで上昇すると、該マス部
材11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11が停止状態となり、このマス部材11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 of the liquid in the orifice 9, the orifice 9 is in a so-called clogging state in which the liquid does not flow inside the orifice 9. Further, when the frequency becomes higher and matches a predetermined frequency determined according to the weight of the mass member 11 and the elastic coefficients of the elastic members 10 and 12, the mass member 11 resonates. And the second
As indicated by the broken line in the figure, in the frequency range lower than this resonance frequency, the mass member 11 vibrates in the same phase as the vibration from the engine E, and the vibration transmissibility to the vehicle body B is accompanied by the vibration in the same phase. It rises and reaches a peak at the resonance point of the mass member 11. On the other hand, if the vibration frequency exceeds the resonance point of the mass member 11,
When it rises to the muffled sound range of 80 to 100 Hz or more, the vibration of the mass member 11 is in the opposite phase to the vibration of the engine E and the mass member 11 is stopped. By being cut off, the mounting device M serves as a low-pass filter and can reduce the vibration transmissibility in the muffled sound range as high-frequency noise.

そして、本実施例の場合、上記液体室16の下壁が可動板
13で構成され、この可動板13は上記マス部材11に弾性支
持されているため、マス部材11の共振点よりも低い周波
数域では、可動板13がマス部材11に対し相対的に移動し
て液体室16内の圧力が低下する。一方、マス部材11の共
振点よりも高い周波数域にあっては、停止状態にあるマ
ス部材11に対し可動板13が液体室16内の圧力を低下させ
るように相対移動する。こうした可動板13のマス部材11
に対する相対移動に伴う液体室16内の圧力低下により、
同図で実線にて示す如く、マス部材11の共振点上下の周
波数域での振動伝達率をより一層低減することができ
る。よって、これらマス部材11の共振によるローパスフ
ィルタ効果および可動板13による液体室16の減圧効果の
相乗的な効果により、上記こもり音域での振動伝達率を
大幅に低下させることができる。尚、第２図で、一点鎖
線はエンジン取付板１と車体取付板４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す。In the case of this embodiment, the lower wall of the liquid chamber 16 is a movable plate.
Since the movable plate 13 is elastically supported by the mass member 11, the movable plate 13 moves relatively to the mass member 11 in a frequency range lower than the resonance point of the mass member 11. The pressure in the liquid chamber 16 drops. On the other hand, in the frequency range higher than the resonance point of the mass member 11, the movable plate 13 moves relative to the mass member 11 in the stopped state so as to reduce the pressure in the liquid chamber 16. The mass member 11 of the movable plate 13
Due to the pressure drop in the liquid chamber 16 due to the relative movement to
As indicated by the solid line in the figure, the vibration transmissibility in the frequency range above and below the resonance point of the mass member 11 can be further reduced. Therefore, due to the synergistic effect of the low-pass filter effect due to the resonance of the mass member 11 and the pressure reducing effect of the liquid chamber 16 due to the movable plate 13, the vibration transmissibility in the muffled sound range can be significantly reduced. Incidentally, in FIG. 2, the alternate long and short dash line shows the vibration transmissibility characteristic when only the elastic member is interposed between the engine mounting plate 1 and the vehicle body mounting plate 4.

尚、上記実施例では、エンジン取付板１を上側に、車体
取付板４を下側にそれぞれ配置しているが、両取付板1,
4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 the above embodiment, the engine mounting plate 1 is arranged on the upper side and the vehicle body mounting plate 4 is arranged on the lower side.
The position of 4 may be reversed, and the same effect as that of each of the above embodiments can be obtained.

また、上記実施例では、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 the above embodiment, the case of the mounting device M that elastically supports the engine E on the vehicle body B has been described, but the present invention elastically supports the power unit other than the engine on the base in order to reduce vibration, noise and the like. It goes without saying that the present invention can also be applied to a mounting device configured to do so.

（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部材により容積可変を流体室
を有し、オリフィスを有する仕切壁により該流体室がそ
の壁を構成する弾性膜側に対して部分的に仕切られてな
る流体封入式マウンティング装置に対し、上記両取付部
材間にマス部材を両取付部材間に亘る上記弾性部材を分
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、該マス部材に上記流体室の壁を構成する可動部材を
弾性支持するようにしたことにより、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、上記マス部材の共振点よりも高い
周波数域では、可動板のマス部材との相対移動により流
体室内の圧力が上昇するのを抑え得、この圧力上昇抑制
効果およびマス部材の逆位相振動によるローパスフィル
タ効果の相乗的な効果によって基台への振動伝達率をよ
り一層低下させることができ、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 volume of the fluid chamber is variable between the power unit and the base by elastic members provided between the power unit and the base mounting member. For a fluid-filled mounting device in which the fluid chamber is partially partitioned by the partition wall having an orifice with respect to the elastic film side forming the wall, a mass member is provided between the two mounting members. The elastic member is divided into two parts to be elastically supported by a structure provided in the divided part, and the mass member is elastically supported to the movable member that constitutes the wall of the fluid chamber, so that the fluid at the orifice is The vibration effect at a specific frequency of the power unit such as engine shake can be damped by the damping effect accompanying the resonance phenomenon of the In the wave number range, it is possible to prevent the pressure in the fluid chamber from rising due to the relative movement of the movable plate with the mass member, and this base pressure is suppressed by this pressure increase suppression effect and the synergistic effect of the low-pass filter effect by the antiphase vibration of the mass member. It is possible to further reduce the vibration transmissibility of the mounting device, so that the sound insulation and damping properties of the mounting device can be greatly improved with a simple structure.

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

図面は本発明の実施例を示し、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である。 Ｍ……マウンティング装置、１……エンジン取付板、４
……車体取付板、７……弾性膜、８……仕切板、９……
オリフィス、10,12……弾性部材、11……マス部材、13
……可動板、16……液体室、16a……上側室、Ｅ……エ
ンジン、Ｂ……車体。The drawings show an embodiment of the present invention, FIG. 1 is a sectional view of a mounting device, and FIG. 2 is a characteristic diagram showing a vibration transmissibility characteristic with respect to a vibration frequency of the mounting device. M: Mounting device, 1 ... Engine mounting plate, 4
…… Body mounting plate, 7 …… Elastic membrane, 8 …… Partition plate, 9 ……
Orifice, 10,12 ... Elastic member, 11 ... Mass member, 13
...... Movable plate, 16 …… Liquid chamber, 16a …… Upper chamber, E …… Engine, B …… Car body.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】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
弾性部材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、 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、該室と上記流体室とを連通す
るオリフィスを有する仕切壁と、 上記両取付部材間に亘る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、 上記流体室の壁の他の部分を構成し、上記マス部材に弾
性支持された可動部材とを備えてな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 which is provided and is hermetically formed by an elastic member that encloses an incompressible fluid so that the volume can be changed; and a part of the wall of the fluid chamber, which corresponds to a pressure change in the fluid chamber. An elastic membrane that is deformed; a partition wall that is disposed in the fluid chamber so as to partition and form a chamber having the elastic membrane as a wall therein; and a partition wall that has an orifice that communicates the chamber with the fluid chamber; A mass member elastically supported by both mounting members by dividing the elastic member extending between the mounting members and being provided in the divided portion, and forming another part of the wall of the fluid chamber, A mounting device for a power unit, comprising a movable member elastically supported.
JP61267130A 1986-11-10 1986-11-10 Power unit mounting device Expired - Lifetime JPH0788873B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61267130A JPH0788873B2 (en) 1986-11-10 1986-11-10 Power unit mounting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61267130A JPH0788873B2 (en) 1986-11-10 1986-11-10 Power unit mounting device

Publications (2)

Publication Number Publication Date
JPS63120933A JPS63120933A (en) 1988-05-25
JPH0788873B2 true JPH0788873B2 (en) 1995-09-27

Family

ID=17440489

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61267130A Expired - Lifetime JPH0788873B2 (en) 1986-11-10 1986-11-10 Power unit mounting device

Country Status (1)

Country Link
JP (1) JPH0788873B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2657666B1 (en) * 1990-01-30 1992-05-15 Hutchinson Sa IMPROVEMENTS IN HYDRAULIC ANTI-VIBRATION DEVICES.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
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
DE3421119C1 (en) * 1984-06-07 1985-12-05 Metzeler Kautschuk GmbH, 8000 München Two-chamber engine mount with hydraulic damping
DE3421137A1 (en) * 1984-06-07 1985-12-12 Audi AG, 8070 Ingolstadt BEARINGS, ESPECIALLY FOR THE STORAGE OF AN INTERNAL COMBUSTION ENGINE IN A MOTOR VEHICLE
JPS6181032U (en) * 1984-10-31 1986-05-29

Also Published As

Publication number Publication date
JPS63120933A (en) 1988-05-25

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