JPS60215134A - Vibration isolating device - Google Patents
Vibration isolating deviceInfo
- Publication number
- JPS60215134A JPS60215134A JP7146584A JP7146584A JPS60215134A JP S60215134 A JPS60215134 A JP S60215134A JP 7146584 A JP7146584 A JP 7146584A JP 7146584 A JP7146584 A JP 7146584A JP S60215134 A JPS60215134 A JP S60215134A
- Authority
- JP
- Japan
- Prior art keywords
- liquid chamber
- orifice
- chamber
- rubber
- hollow 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
- F16F13/10—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper the wall being at least in part formed by a flexible membrane or the like
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Devices Of Dampers And Springs (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の利用分野］
本発明は振動源からの振動を減少させるための防振装置
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a vibration isolator for reducing vibrations from a vibration source.
［背景技術］
一般的に防振ゴムと呼ばれる防振装置は、−例として自
動車のエンジンマウントに用いられて自動車エンジンの
振動を吸収し、車体へ伝達させないようになっている。[Background Art] Vibration isolating devices, generally called vibration isolating rubber, are used, for example, in engine mounts of automobiles to absorb vibrations from the automobile engine and prevent them from being transmitted to the vehicle body.
この防振装置として、弾性材料の壁部を一部に有する中
空室を振動減衰液室とし、この中空室を複数に区画する
と共に制限通路で連通した防振装置が提案されている。As this vibration isolator, a vibration isolator has been proposed in which a hollow chamber having a wall portion made of an elastic material is used as a vibration damping liquid chamber, and this hollow chamber is divided into a plurality of sections, which are communicated through a restricted passage.
この防振装置では、振動源からの振動を一方の液室の縮
少力として伝達し、この液室の液体を制限通路を介して
他方の液室番と移動させる場合の内部摩擦に基く抵抗力
で振動を吸収する構成が提案されている。This vibration isolator transmits vibrations from a vibration source as a contraction force to one liquid chamber, and creates a resistance based on internal friction when moving the liquid in this liquid chamber to the other liquid chamber through a restricted passage. A configuration has been proposed that uses force to absorb vibrations.
このような防振装置では、振動周波数が高くなると制限
通路が目づまり状態となって、動ばね定数にピークを生
じ、振動の伝達率が増大し自動車の乗り心地が悪くなる
原因となる。この場合、制限通路の断面積を増大するこ
とにより、この動ばね定数のピークを高周波側にずらす
ことができ、車両の乗り心地向上に寄与できる。In such a vibration isolator, when the vibration frequency becomes high, the restriction passage becomes clogged, causing a peak in the dynamic spring constant, increasing the vibration transmission rate, and causing a worsening of the ride comfort of the automobile. In this case, by increasing the cross-sectional area of the restriction passage, the peak of this dynamic spring constant can be shifted to the high frequency side, contributing to improving the ride comfort of the vehicle.
ところが大きな断面積の制限通路を中空室の内部に設け
ることは設計上及び製作上困難さを伴ない、かつ中空室
の容積が少くなる原因となる。However, providing a restricting passage with a large cross-sectional area inside the hollow chamber is difficult in terms of design and manufacturing, and causes a reduction in the volume of the hollow chamber.
［発明の目的コ
本発明は上記事実を考慮し、制限通路を中空室内に設け
る必要を無くし、大きな断面積の制限通路を、形成可能
な防振装置を得ることが目的である。[Object of the Invention] Taking the above-mentioned facts into account, the present invention aims to provide a vibration isolating device that eliminates the need to provide a restriction passage in a hollow chamber and can form a restriction passage with a large cross-sectional area.
［発明の概要コ
本発明に係る防振装置では、中空室の外部へ制・限通路
を形成し、区画された液室とはそれぞれ中空室の壁部を
貫通して連通させることにより大きな断面積の制限通路
が形成可能となってる。[Summary of the Invention] In the vibration isolating device according to the present invention, a restriction/restriction passage is formed to the outside of the hollow chamber, and a large disconnection is established between the partitioned liquid chambers by penetrating the walls of the hollow chambers and communicating with each other. It is possible to form passages with limited area.
［発明の実施例］
第１図には本発明が適用された防振装置の断面図が示さ
れている。この防振装置はエンジンマウントとして自動
車へ用いられる様になってる。[Embodiments of the Invention] FIG. 1 shows a sectional view of a vibration isolator to which the present invention is applied. This vibration isolator is now used in automobiles as an engine mount.
この防振装置の筒体１０は軸芯が垂直とされており、下
端部は半径方向に突出したフランジ部１２とされている
。この筒体１０の下端部にはダイヤフラム１４の周辺部
が底板１６によって挟持されている。この底板１６とダ
イヤフラム１４との間は空気室１８を構成しており、ダ
イヤフラム１４の変形により拡縮可能となついる。The cylindrical body 10 of this vibration isolator has a vertical axis, and a flange portion 12 protruding in the radial direction at the lower end. A peripheral portion of a diaphragm 14 is held at the lower end of this cylinder 10 by a bottom plate 16. An air chamber 18 is formed between the bottom plate 16 and the diaphragm 14, and can be expanded or contracted by deforming the diaphragm 14.
筒体１０の上端部は次第に直径が拡大された傾斜部２０
とされており、吸振主体である円筒形状のゴム２２の下
端部が加硫接着されている。ゴム２２に代えて他の弾性
材料を用いることも可能である。The upper end of the cylindrical body 10 has an inclined portion 20 whose diameter is gradually enlarged.
The lower end of the cylindrical rubber 22, which mainly absorbs vibrations, is vulcanized and bonded. It is also possible to use other elastic materials in place of rubber 22.
このゴム２２の上端部は合板２４へ加硫接着されており
、この台板２４ヘポルト２６が固着されている。合板２
４は図示しないエンジンの搭載用であり、ボルト２６に
よりエンジンが合板２４へ固着される様になっている。The upper end of this rubber 22 is vulcanized and bonded to a plywood 24, and a port 26 is fixed to this base plate 24. plywood 2
4 is for mounting an engine (not shown), and the engine is fixed to the plywood 24 with bolts 26.
ここに筒体ｌＯ、ゴム２２、ダイヤフラム１４によって
形成される円柱形状の中空室は液室２８とされており、
水等の液体が充填されている。Here, a cylindrical hollow chamber formed by the cylinder lO, the rubber 22, and the diaphragm 14 is a liquid chamber 28,
It is filled with liquid such as water.
従って：Ｉ：ム２２はこの液室２８の一部の壁部を構成
する様になっている。Therefore, the I:mu 22 constitutes a part of the wall of this liquid chamber 28.
液室２８の上下方向中間部には仕切板３０が設けられて
液室２８を上液室２８Ａ及び上液室２８Ｂに区画してい
る。この仕切板３０は外周部にリング状の溝３２を有し
ており、この溝３２内へは筒体１０の内周部から突出す
るリング状の支持板３４が挿入されている。この支持板
３４の板厚は溝３２の幅寸法よりも小さく形成されてお
り、これによってこの実施例では仕切板３０が筒体１０
の軸芯に添って若干量だけ上下動できる様になっている
。A partition plate 30 is provided at a vertically intermediate portion of the liquid chamber 28 to divide the liquid chamber 28 into an upper liquid chamber 28A and an upper liquid chamber 28B. The partition plate 30 has a ring-shaped groove 32 on its outer circumference, and a ring-shaped support plate 34 protruding from the inner circumference of the cylinder 10 is inserted into this groove 32. The thickness of the support plate 34 is smaller than the width of the groove 32, so that in this embodiment the partition plate 30 is
It is designed to be able to move up and down by a small amount along its axis.
筒体１０の外周部には傾斜部２０付近にフランジ板３６
が固着されている。このフランジ板３６′ には円孔３
８が穿設されており、図示しない車体から立設されるボ
ルトの貫通用になっている。この貫通したボルトにはナ
ツトが螺合してフランジ板３６が車体へ固着される様に
なっている。A flange plate 36 is provided near the inclined portion 20 on the outer circumference of the cylinder 10.
is fixed. This flange plate 36' has a circular hole 3
8 is bored, and is used for passing a bolt erected from the vehicle body (not shown). A nut is screwed into the bolt that passes through the bolt, so that the flange plate 36 is fixed to the vehicle body.
フランジ板３６と筒体１０の外周部の間には断面略り字
状の外板４０が固着されている。この外筒４０はフラン
ジ板３６と筒体１０との間に制限通路であるオリフィス
４２を形成している。このオリフィス４２は筒体１０の
周りにリング状となっており、筒体１０に貫通される連
通孔４４．４６を介してそれぞれ上液室２８Ａ、上液室
２８Ｂと連通されている。この連通孔４４．４６は筒体
１０の軸芯を挟んでほぼ反対側に形成されいてる。これ
によって上液室２８Ａと上液室２８Ｂとは連通孔４４．
４６を介してたがいに連通されている。An outer plate 40 having an abbreviated cross-section is fixed between the flange plate 36 and the outer circumference of the cylinder 10. This outer cylinder 40 forms an orifice 42, which is a restricted passage, between the flange plate 36 and the cylinder body 10. The orifice 42 has a ring shape around the cylinder 10 and communicates with the upper liquid chamber 28A and the upper liquid chamber 28B through communication holes 44 and 46 penetrated through the cylinder 10, respectively. The communication holes 44 and 46 are formed on substantially opposite sides of the axis of the cylinder 10. Thereby, the upper liquid chamber 28A and the upper liquid chamber 28B are connected to the communication hole 44.
They communicate with each other via 46.
これらの連通孔４４．４６は必要に応じて取付位置を変
更したり、複数個設けたりすることも可能であり、また
その断面積を大きくするため５に、長円状とすることも
可能である。この実施例では連通孔４４．４６の開口面
積がオリフィス４２の断面積と同等以上となるようにそ
の幅寸法（紙面直角方向寸法）が決定されている。These communication holes 44 and 46 can be installed in different positions or provided in multiple numbers as needed, and can also be made into an oval shape to increase their cross-sectional area. be. In this embodiment, the width dimension (dimension in the direction perpendicular to the plane of the paper) of the communication holes 44, 46 is determined so that the opening area of the communication holes 44, 46 is equal to or larger than the cross-sectional area of the orifice 42.
次に本実施例の作用を説明する。Next, the operation of this embodiment will be explained.
フランジ板３６は車体から立設される図示しないボルト
を介して車体へ固着され、オリフィス４２ヘボルト２６
により自動車用エンジンが搭載されて組付が完了する。The flange plate 36 is fixed to the vehicle body via bolts (not shown) that stand upright from the vehicle body, and the bolts 26 are connected to the orifice 42.
The automobile engine is mounted and the assembly is completed.
エンジンの取り伺に際しては、エンジンの自重が合板２
４へ作用するのでゴム２２が変形し、上−液室２８Ａの
圧力が上昇する。この上昇圧力はオリフィス４２を介し
て上液室２８Ｂへ伝達され、ダイヤフラム１４は空気室
１８を縮少させる方向に変位する。When picking up the engine, the engine's own weight should be
4, the rubber 22 is deformed and the pressure in the upper liquid chamber 28A increases. This increased pressure is transmitted to the upper liquid chamber 28B via the orifice 42, and the diaphragm 14 is displaced in a direction that reduces the air chamber 18.
エンジン運転時には、エンジンに生ずる振動カ合板２４
を介して伝達される。ゴム２２は内部摩擦に基づく制振
機能によって振動を吸収することができる。When the engine is running, vibrations generated in the engine occur on the plywood 24.
transmitted via. The rubber 22 can absorb vibrations by a damping function based on internal friction.
振動の周波数が低い場合にはオリフィス４２を液体が通
過する場合に生ずる粘性抵抗に基づく減衰作用で防振効
果が向上される。When the frequency of vibration is low, the vibration damping effect is improved by the damping effect based on the viscous resistance that occurs when the liquid passes through the orifice 42.
振動の周波数が高くなると、オリフィス４２は目づまり
状態になる可能性があるが、この実施例のオリフィス４
２は液室２８の外部に形成されているので、その断面積
が大きく、目づまり状態となる周波数を高くすることが
できる。As the frequency of vibration increases, the orifice 42 may become clogged, but the orifice 4 of this embodiment
2 is formed outside the liquid chamber 28, so its cross-sectional area is large, and the frequency at which it becomes clogged can be increased.
更にこの実施例では仕切板３０が微小量だけ上下動可能
となっているので、オリフィス４２が目づまり状態とな
った場合にも、上液室２８Ａ、下液室２８Ｂの体積を変
更可能して振動を吸収することができる。Furthermore, in this embodiment, the partition plate 30 can be moved up and down by a minute amount, so even if the orifice 42 becomes clogged, the volumes of the upper liquid chamber 28A and the lower liquid chamber 28B can be changed. Can absorb vibrations.
一例としてオリフィス４２は±０．１〜±１ｍｍの振巾
内で大きなロスファクターを発生させることができ、仕
切板３０の振動は十〇、、０５ｍｍの振「１］内で振動
を確実に吸収することができる。またオリフィス４２の
断面積を変更することにより周波数２０〜６０Ｈｚの範
囲における振動を確実に吸収させることが可能となる。As an example, the orifice 42 can generate a large loss factor within an amplitude of ±0.1 to ±1 mm, and the vibration of the partition plate 30 can reliably absorb vibration within an amplitude of 10,05 mm. Furthermore, by changing the cross-sectional area of the orifice 42, vibrations in the frequency range of 20 to 60 Hz can be reliably absorbed.
更にこの実施例ではオリツーイス４２が液室２８の外部
へ設けられているため、仕切板３０を微小振動可能とす
る構成にした場合にその開口率（ｄ／Ｄ）を９０パ一セ
ント以上とすることができ、これによっても高周波の吸
収が可能となり、−例として３００Ｈｚ以上の高周波ま
で吸収が可能である。Furthermore, in this embodiment, the ori-two chair 42 is provided outside the liquid chamber 28, so when the partition plate 30 is configured to allow minute vibrations, its aperture ratio (d/D) is set to 90 percent or more. This also makes it possible to absorb high frequencies; for example, it is possible to absorb high frequencies of 300 Hz or more.
次に第２図には本発明の第２実施例に係る防振装置が示
されている。この実施例では合板２４と底板１６との間
に円柱形状とされたゴム２２が配置されており、合板２
４とこのゴム２２の上端部との間に仕切板４８がその周
辺部を挟持されている。また仕切板４８と合板２４との
間にはダイヤフラム１４の周辺部が挟持されている。こ
れによってダイヤフラム１４と仕切板４８との間を上液
室２８Ａ、仕切板４８とゴム２２との間を下液室２８Ｂ
、ダイヤフラム１４と台板２４との間を空気室１８とし
ている。Next, FIG. 2 shows a vibration isolating device according to a second embodiment of the present invention. In this embodiment, a cylindrical rubber 22 is placed between the plywood 24 and the bottom plate 16, and the plywood 22 is disposed between the plywood 24 and the bottom plate 16.
4 and the upper end of this rubber 22, a partition plate 48 is sandwiched at its periphery. Further, the peripheral portion of the diaphragm 14 is sandwiched between the partition plate 48 and the plywood 24. As a result, the space between the diaphragm 14 and the partition plate 48 is the upper liquid chamber 28A, and the space between the partition plate 48 and the rubber 22 is the lower liquid chamber 28B.
An air chamber 18 is formed between the diaphragm 14 and the base plate 24.
ゴム２２の内周部には液室２８から外部へ突出する状態
で箱体５０が埋め込まれており、この箱体５０の軸芯は
液室２８と同軸のリング状で、断面は矩形状とされその
内部がオリフィス４２となっている。箱体５０の一部は
箱体５０の内周壁、すなわち下液室２８Ｂの壁を貫通す
る連通孔５２によって下液室２８Ｂと連通されている。A box body 50 is embedded in the inner peripheral part of the rubber 22 so as to protrude from the liquid chamber 28 to the outside.The axis of the box body 50 is a ring coaxial with the liquid chamber 28, and the cross section is rectangular. The inside thereof serves as an orifice 42. A portion of the box body 50 is communicated with the lower liquid chamber 28B through a communication hole 52 penetrating the inner circumferential wall of the box body 50, that is, the wall of the lower liquid chamber 28B.
また他の一部には管体５４が連通されており、この管体
５４は」二液室２８Ａの壁部を構成する仕切板４８を貫
通して上液室２８Ａと連通している。A tube body 54 is communicated with the other part, and this tube body 54 passes through a partition plate 48 that forms the wall of the two-liquid chamber 28A and communicates with the upper liquid chamber 28A.
またこの実施例では底板１６が車体へ搭載されてポルｌ
−１６Ａで固着される。Further, in this embodiment, the bottom plate 16 is mounted on the vehicle body and the bottom plate 16 is mounted on the vehicle body.
- Fixed with 16A.
このように構成される木実施例に於てもオリフィス４２
は液室２８の外部に形成されるため、液室２８の容積を
縮少することなく大きな断面積を有した制限通路を構成
することができる。In the tree embodiment constructed in this way, the orifice 42
Since it is formed outside the liquid chamber 28, a restriction passage having a large cross-sectional area can be constructed without reducing the volume of the liquid chamber 28.
次に第３図には本発明の第３実施例が示されている。こ
の実施例では前記第１実施例のオリフィス４２内ヘプラ
ンジヤ５６を挿入した構成である。このプランジャ５６
はピストンとシリンダーとによって構成されるアクチュ
エータ５８によって駆動されて上下動する様になってお
り、これによってオリフィス４２の有効断面積が変更可
能となっている。このためプランジャ５６の上下動によ
ってオリフィス４２の容積が調節され、動ばね定数のピ
ークを発生する周波数が変更できる。Next, FIG. 3 shows a third embodiment of the present invention. This embodiment has a configuration in which the plunger 56 of the first embodiment is inserted into the orifice 42. This plunger 56
is driven by an actuator 58 composed of a piston and a cylinder to move up and down, thereby making it possible to change the effective cross-sectional area of the orifice 42. Therefore, the volume of the orifice 42 is adjusted by the vertical movement of the plunger 56, and the frequency at which the peak of the dynamic spring constant occurs can be changed.
［発明の効果］
以上説明した如く本発明の防振装置では、中空液室の外
部へ複数の液室を連通ずる制限通路を形成するので、大
きな断面積の制限通路が形成可能となる優れた効果を有
する。[Effects of the Invention] As explained above, in the vibration isolating device of the present invention, a restriction passage that communicates a plurality of liquid chambers with the outside of the hollow liquid chamber is formed, and therefore, a restriction passage with a large cross-sectional area can be formed. have an effect.
第１図は本発明に係る防振装置の第１実施例を示す縦断
面図、第２図及び第３図はそれぞれ本発明の第２、“３
実施例を示す断面図である。
１０・・・筒体、
１４・１ダイヤフラム、
２２−＠・ゴム、
２８・・・液室、
２８Ａ・・・上液室、
２８Ｂ・・・下液室、
３０・・・仕切板、
４２０令オリフイス、
４４・・・連通孔、
４６・・・連通孔、
４８・・・仕切板。
代理人 弁理士 中島 淳
第１図
第２図
第３図FIG. 1 is a vertical cross-sectional view showing a first embodiment of a vibration isolator according to the present invention, and FIGS.
It is a sectional view showing an example. DESCRIPTION OF SYMBOLS 10... Cylindrical body, 14.1 diaphragm, 22-@-Rubber, 28... Liquid chamber, 28A... Upper liquid chamber, 28B... Lower liquid chamber, 30... Partition plate, 420 order Orifice, 44...Communication hole, 46...Communication hole, 48...Partition plate. Agent Patent Attorney Jun Nakajima Figure 1 Figure 2 Figure 3
Claims (1)
充当し、この中空室を複数に区画すると共に制限通路で
連通ずる防振装置であって、前記制限通路は前記中空室
の外部へ形成し、前記中空室の壁部を貫通して中空室と
連通させることを特徴とした防振装置。(1) A vibration isolator in which a hollow chamber having a wall portion of an elastic material is used as a liquid chamber, and the hollow chamber is partitioned into a plurality of parts and communicated with each other by a restricted passage, wherein the restricted passage is connected to the hollow chamber. A vibration isolating device characterized in that it is formed on the outside of the hollow chamber and communicates with the hollow chamber by penetrating the wall of the hollow chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7146584A JPS60215134A (en) | 1984-04-10 | 1984-04-10 | Vibration isolating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7146584A JPS60215134A (en) | 1984-04-10 | 1984-04-10 | Vibration isolating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60215134A true JPS60215134A (en) | 1985-10-28 |
| JPH0546449B2 JPH0546449B2 (en) | 1993-07-14 |
Family
ID=13461366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7146584A Granted JPS60215134A (en) | 1984-04-10 | 1984-04-10 | Vibration isolating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60215134A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5794144A (en) * | 1980-11-29 | 1982-06-11 | Kinugawa Rubber Ind Co Ltd | Anti-vibration supporting device |
| JPS592926A (en) * | 1982-06-28 | 1984-01-09 | Nissan Motor Co Ltd | Mounting device of power unit |
-
1984
- 1984-04-10 JP JP7146584A patent/JPS60215134A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5794144A (en) * | 1980-11-29 | 1982-06-11 | Kinugawa Rubber Ind Co Ltd | Anti-vibration supporting device |
| JPS592926A (en) * | 1982-06-28 | 1984-01-09 | Nissan Motor Co Ltd | Mounting device of power unit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0546449B2 (en) | 1993-07-14 |
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