JPH0228020B2 - - Google Patents
Info
- Publication number
- JPH0228020B2 JPH0228020B2 JP59060986A JP6098684A JPH0228020B2 JP H0228020 B2 JPH0228020 B2 JP H0228020B2 JP 59060986 A JP59060986 A JP 59060986A JP 6098684 A JP6098684 A JP 6098684A JP H0228020 B2 JPH0228020 B2 JP H0228020B2
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- fluid
- sealed
- vibration
- orifice
- 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
- 239000012530 fluid Substances 0.000 claims description 29
- 230000005484 gravity Effects 0.000 claims description 14
- 238000005192 partition Methods 0.000 claims description 11
- 238000013016 damping Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 239000012528 membrane Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 239000011553 magnetic fluid Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 description 2
- UAYWVJHJZHQCIE-UHFFFAOYSA-L zinc iodide Chemical compound I[Zn]I UAYWVJHJZHQCIE-UHFFFAOYSA-L 0.000 description 2
- XZXYQEHISUMZAT-UHFFFAOYSA-N 2-[(2-hydroxy-5-methylphenyl)methyl]-4-methylphenol Chemical compound CC1=CC=C(O)C(CC=2C(=CC=C(C)C=2)O)=C1 XZXYQEHISUMZAT-UHFFFAOYSA-N 0.000 description 1
- 229940107816 ammonium iodide Drugs 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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)
- 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】
(イ) 産業上の利用分野
本発明は、防振マウント、特に内部に流体を封
入した防振マウント、に関するものである。DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a vibration-proof mount, and particularly to a vibration-proof mount in which a fluid is sealed.
(ロ) 従来の技術
従来の防振マウントとして、例えば特開昭56−
116518号公報に示されるものがある。この従来の
防振マウントは、車体側に取り付けられる支持具
と、パワーユニツト側に取り付けられる支持具
と、両支持具に連結される弾性体と、弾性体内に
形成される密閉室と、密閉室を第１室と第２室と
に分ける仕切部と、第１室と第２室とを連通させ
るように仕切部に設けられるオリフイスと、密閉
室内に封入される磁性流体と、磁性流体に作用す
る電磁石と、を有している。上記のような構成と
することにより、電磁石の作用によつてオリフイ
スを通る磁性流体の粘度を変えることができ、こ
れにより入力される振動に応じて制振特性を変え
ることができる。(b) Conventional technology For example, as a conventional anti-vibration mount,
There is one shown in Publication No. 116518. This conventional anti-vibration mount consists of a support that is attached to the vehicle body side, a support that is attached to the power unit side, an elastic body that is connected to both supports, a sealed chamber formed inside the elastic body, and a sealed chamber. A partition section that divides the air into a first chamber and a second chamber, an orifice provided in the partition section to communicate the first chamber and the second chamber, a magnetic fluid sealed in the sealed chamber, and an orifice that acts on the magnetic fluid. It has an electromagnet. With the above configuration, the viscosity of the magnetic fluid passing through the orifice can be changed by the action of the electromagnet, and thereby the damping characteristics can be changed in accordance with the input vibration.
(ハ) 発明が解決しようとする課題
しかしながら、上記のような従来の防振マウン
トには、減衰効果を向上するために密閉室に封入
する流体の比重を大きくすると、防振マウントの
重量が増大するという問題点がある。すなわち、
内部に流体を封入した形式の防振マウントにおい
ては、オリフイスを通過する流体の粘性に基づく
流動抵抗によつて減衰効果が得られるが、これに
加えてオリフイス内にある流体の振動によつても
減衰効果が得られる。オリフイス内の流体は仕切
板の振動によつて振動する。この振動系をモデル
化して示すと、第１図に示すようになる。ここ
で、K1は弾性体の支持方向へのばね定数、K2は
弾性体が内部の流体圧力によつて拡張する場合の
ばね定数、K3はマウント内に形成される空気室
によるばね定数、Ｃはオリフイスの減衰係数、ま
たｍはオリフイス内の流体の質量である。この振
動モデルでは、損失係数Ｌは次式で示される。(c) Problems to be Solved by the Invention However, in the conventional vibration isolating mount as described above, when the specific gravity of the fluid sealed in the sealed chamber is increased to improve the damping effect, the weight of the vibration isolating mount increases. There is a problem with that. That is,
In vibration isolation mounts that have fluid sealed inside, a damping effect is obtained by the flow resistance based on the viscosity of the fluid passing through the orifice, but in addition to this, vibration of the fluid inside the orifice also provides a damping effect. A damping effect can be obtained. The fluid in the orifice vibrates due to the vibration of the partition plate. When this vibration system is modeled, it becomes as shown in FIG. Here, K 1 is the spring constant in the support direction of the elastic body, K 2 is the spring constant when the elastic body expands due to internal fluid pressure, and K 3 is the spring constant due to the air chamber formed within the mount. , C is the damping coefficient of the orifice, and m is the mass of the fluid within the orifice. In this vibration model, the loss coefficient L is expressed by the following equation.
Ｌ＝K2 2CW／（K1＋K2）｛（W0 2−W2）2m2
＋C2W2｝−K2 2（W0 2−W2）ｍ
（ただし、W0 2＝K2＋K3／ｍ）
上式にｍを順次代入すると明らかなように、ｍ
の値が大きいほど損失係数Ｌが大きくなり、減衰
効果が大きくなる。流体の質量ｍを大きくするた
めには、比重の大きい流体を使用すればよい。 L=K 2 2 CW/(K 1 +K 2 ) {(W 0 2 −W 2 ) 2 m 2
+C 2 W 2 }−K 2 2 (W 0 2 −W 2 )m (W 0 2 = K 2 +K 3 /m) As is clear from substituting m into the above equation, m
The larger the value of , the larger the loss coefficient L and the greater the damping effect. In order to increase the mass m of the fluid, a fluid with a high specific gravity may be used.
しかし、流体の比重を大きくすると、防振マウ
ントの重量が増大してしまう。本発明はこのよう
な課題を解決することを目的としている。 However, when the specific gravity of the fluid is increased, the weight of the vibration-proof mount increases. The present invention aims to solve these problems.
(ニ) 課題を解決するための手段
本発明は、密閉室内に更に別の密閉室を設け、
オリフイス周辺の流体のみを高比重とすることに
より、上記課題を解決する。すなわち、本発明に
よる防振マウントは、車体側に取り付けられる支
持具１２と、パワーユニツト側に取り付けられる
支持具１０と、両支持具を連結する弾性体１４
と、両支持具の間に設けられる密閉室１８と、密
閉室を第１室１８ａ及び第２室１８ｂに区画する
仕切板２０と、第１室内に設けられる容積変化可
能な第３室３０と、第２室内に設けられる容積変
化可能な第４室３２と、第３室と第４室とを連通
させるオリフイス３４と、第１室及び第２室に封
入される第１流体と、第３室及び第４室に封入さ
れる比重が第１流体よりも大きい第２流体と、を
有している。なお、かつこ内の符号は後述の実施
例の対応する部材を示す。(d) Means for solving the problem The present invention provides another sealed chamber within the sealed chamber,
The above problem is solved by making only the fluid around the orifice have a high specific gravity. That is, the anti-vibration mount according to the present invention includes a support 12 attached to the vehicle body side, a support 10 attached to the power unit side, and an elastic body 14 connecting both supports.
, a sealed chamber 18 provided between both supports, a partition plate 20 that divides the sealed chamber into a first chamber 18a and a second chamber 18b, and a third chamber 30 provided within the first chamber whose volume can be changed. , a fourth chamber 32 provided in the second chamber whose volume can be changed; an orifice 34 that communicates the third chamber with the fourth chamber; a first fluid sealed in the first chamber and the second chamber; and a second fluid whose specific gravity is larger than that of the first fluid, which is sealed in the chamber and the fourth chamber. Note that the reference numerals in parentheses indicate corresponding members in the embodiments described later.
(ホ) 作 用
第３室及び第４室に封入された比重の大きい第
２流体が常にオリフイス内に存在し、これにより
所定の減衰効果を得ることができる。第１室及び
第２室には比重の小さい第１流体が封入されるた
め、防振マウントの重量はほとんど増大しない。(e) Effect The second fluid with a high specific gravity sealed in the third and fourth chambers is always present in the orifice, thereby making it possible to obtain a predetermined damping effect. Since the first fluid having a low specific gravity is sealed in the first chamber and the second chamber, the weight of the vibration isolating mount hardly increases.
(ヘ) 実施例
第２図に本発明の実施例を示す。第２図に示す
防振マウントは、エンジン側に取り付けられる支
持具１０、車体側に取り付けられる支持具１２、
両支持具１０及び１２に連結される弾性体１４、
支持具１２に取り付けられる弾性膜１６、及び弾
性体１４及び弾性膜１６によつて形成される密閉
室１８を第１室１８ａ及び第２室１８ｂに仕切る
仕切板２０を有している。更に、第１室１８ａ及
び第２室１８ｂの内部にそれぞれ弾性膜によつて
区画された第３室３０及び第４室３２が設けられ
ており、この第３室３０と第４室３２とはオリフ
イス３４を介して連通している。支持具１０は略
平板状の金具１０ａと、金具１０ａに固着された
補助金具１０ｂと、金具１０ａに固着された結合
用のボルト１０ｃとから構成されている。支持具
１２は、互いに結合される２つの金具１２ａ及び
１２ｂと、金具１２ａに固着される結合用のボル
ト１２ｃとから構成されている。弾性体１４は、
金具１０ｂ及び金具１２ｂに焼付接着される。ま
た、弾性膜１６は支持具１２の金具１２ａ及び１
２ｂによつて形成される環状の凹所内に外周部を
仕切壁２０と共に固定される。支持具１２の金具
１２ａと弾性膜１６とによつて区画される室２４
には空気が封入される。第１室１８ａ及び第２室
１８ｂには、水、エチレングリコール、プロピレ
ングリコールの混合物等の比較的比重の小さい第
１流体（比重1.0前後）が封入されている。一方、
第３室３０及び第４室３２には液体金属（例え
ば、水銀）、塩の水溶液（例えば、ヨウ化亜鉛、
ヨウ化アンモニウム、硝酸セリウムなどの水溶
液）、微粒子が分散された液体（例えば、磁性流
体）等を主成分とする比重が1.2以上の第２流体
が封入されている。(F) Example FIG. 2 shows an example of the present invention. The anti-vibration mount shown in FIG. 2 includes a support 10 attached to the engine side, a support 12 attached to the vehicle body side,
an elastic body 14 connected to both supports 10 and 12;
It has an elastic membrane 16 attached to the support 12, and a partition plate 20 that partitions the sealed chamber 18 formed by the elastic body 14 and the elastic membrane 16 into a first chamber 18a and a second chamber 18b. Further, a third chamber 30 and a fourth chamber 32 are provided inside the first chamber 18a and the second chamber 18b, respectively, and are separated by an elastic membrane. It communicates via an orifice 34. The support 10 includes a substantially flat metal fitting 10a, an auxiliary metal fitting 10b fixed to the metal fitting 10a, and a coupling bolt 10c fixed to the metal fitting 10a. The support 12 includes two metal fittings 12a and 12b that are connected to each other, and a connecting bolt 12c that is fixed to the metal fitting 12a. The elastic body 14 is
It is baked and bonded to the metal fittings 10b and 12b. Further, the elastic membrane 16 is connected to the metal fittings 12a and 1 of the support 12.
The outer peripheral portion is fixed together with the partition wall 20 within the annular recess formed by the partition wall 2b. A chamber 24 defined by the metal fitting 12a of the support 12 and the elastic membrane 16
is filled with air. The first chamber 18a and the second chamber 18b are filled with a first fluid having a relatively low specific gravity (specific gravity of about 1.0), such as a mixture of water, ethylene glycol, and propylene glycol. on the other hand,
The third chamber 30 and the fourth chamber 32 contain a liquid metal (for example, mercury), an aqueous salt solution (for example, zinc iodide,
A second fluid having a specific gravity of 1.2 or more and containing as a main component an aqueous solution of ammonium iodide, cerium nitrate, etc., a liquid in which fine particles are dispersed (for example, a magnetic fluid), etc. is sealed.
支持具１０と支持具１２との間に振動が入力さ
れて、例えば第１室１８ａの容積が減少すると、
第１室１８ａ内の第１流体は第３室３０を圧縮し
て縮小することにより、この容積減少を吸収す
る。第３室３０が圧縮されると、第３室３０内の
第２流体はオリフイス３４を通つて第４室３２に
流入する。これによつて第４室３２が膨張し、更
に第２室１８ｂが弾性膜１６を変形させることに
より膨張する。第１室１８ａの容積が増大する方
向に変位した場合には、上記と逆の流体の流れを
生ずる。従つて、オリフイス３４内には常に比重
の大きい第２流体が存在することになる。これに
より第１図に示したような振動系が構成される
が、このような振動系では質量ｍが大きいほど減
衰効果が大きくなる。従つて、より大きい減衰効
果を得ることができ、しかも比重の大きい第２流
体は比較的容積の小さい第３室３０及び第４室３
２にのみ封入されるので、防振マウントの重量が
増大することを防止することができる。 When vibration is input between the support 10 and the support 12, for example, the volume of the first chamber 18a decreases,
The first fluid in the first chamber 18a absorbs this volume reduction by compressing and reducing the third chamber 30. When the third chamber 30 is compressed, the second fluid in the third chamber 30 flows into the fourth chamber 32 through the orifice 34 . This expands the fourth chamber 32, and further expands the second chamber 18b by deforming the elastic membrane 16. When the first chamber 18a is displaced in a direction in which the volume increases, a fluid flow opposite to the above occurs. Therefore, the second fluid with a high specific gravity always exists in the orifice 34. This constitutes a vibration system as shown in FIG. 1, and in such a vibration system, the greater the mass m, the greater the damping effect. Therefore, it is possible to obtain a larger damping effect, and the second fluid having a large specific gravity is transferred to the third chamber 30 and the fourth chamber 3 having a relatively small volume.
Since the anti-vibration mount is enclosed only in the anti-vibration mount 2, it is possible to prevent the weight of the anti-vibration mount from increasing.
なお、第３室３０及び第４室３２は内圧と外圧
とのバランスが変化した場合に変形する構造であ
ればよく、例えば第３図に示すようなじやばら構
造とすることもできる。 Note that the third chamber 30 and the fourth chamber 32 may have any structure as long as they are deformed when the balance between internal pressure and external pressure changes, and for example, they may have a uniform structure as shown in FIG. 3.
(ト) 発明の効果
以上説明してきたように、本発明によると、第
１室及び第２室内にそれぞれ第３室及び第４室を
形成し、第３室と第４室とをオリフイスによつて
接続するようにし、第３室及び第４室に第１室及
び第２室の第１流体よりも比重の大きい第２流体
を封入するようにしたので、重量をほとんど増加
させることなく、振動減衰効果を大きくすること
ができる。(G) Effects of the Invention As explained above, according to the present invention, the third and fourth chambers are formed in the first and second chambers, respectively, and the third and fourth chambers are connected by an orifice. Since the third and fourth chambers are filled with a second fluid that has a higher specific gravity than the first fluid in the first and second chambers, vibrations can be made without increasing the weight. The damping effect can be increased.
第１図は本発明による防振マウントの振動モデ
ルを示す図、第２図は本発明の実施例である防振
マウントを示す図、第３図は別の実施例である防
振マウントを示す図である。
１０，１２……支持具、１４……弾性体、１６
……弾性膜、１８……密閉室、１８ａ……第１
室、１８ｂ……第２室、２０……仕切板、３０…
…第３室、３２……第４室、３４……オリフイ
ス。
FIG. 1 is a diagram showing a vibration model of a vibration isolating mount according to the present invention, FIG. 2 is a diagram showing a vibration isolating mount that is an embodiment of the present invention, and FIG. 3 is a diagram showing a vibration isolating mount that is another embodiment. It is a diagram. 10, 12...Support, 14...Elastic body, 16
...Elastic membrane, 18... Sealed chamber, 18a... First
Chamber, 18b...Second chamber, 20...Partition plate, 30...
...3rd room, 32...4th room, 34...orifice.
Claims (1)
ーユニツト側に取り付けられる支持具１０と、両
支持具を連結する弾性体１４と、両支持具の間に
設けられる密閉室１８と、密閉室を第１室１８ａ
及び第２室１８ｂに区画する仕切板２０と、第１
室内に設けられる容積変化可能な第３室３０と、
第２室内に設けられる容積変化可能な第４室３２
と、第３室と第４室とを連通させるオリフイス３
４と、第１室及び第２室に封入される第１流体
と、第３室及び第４室に封入される比重が第１流
体よりも大きい第２流体と、を有する防振マウン
ト。1 A support 12 attached to the vehicle body side, a support 10 attached to the power unit side, an elastic body 14 connecting both supports, a sealed chamber 18 provided between both supports, and a sealed chamber 1 room 18a
and a partition plate 20 that partitions into a second chamber 18b, and a first chamber 18b.
a third chamber 30 that is provided indoors and whose volume can be changed;
A fourth chamber 32 whose volume can be changed is provided in the second chamber.
and an orifice 3 that communicates the third and fourth chambers.
4, a first fluid sealed in the first chamber and the second chamber, and a second fluid sealed in the third and fourth chambers and having a specific gravity larger than that of the first fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6098684A JPS60205041A (en) | 1984-03-30 | 1984-03-30 | Vibro-isolating mount |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6098684A JPS60205041A (en) | 1984-03-30 | 1984-03-30 | Vibro-isolating mount |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60205041A JPS60205041A (en) | 1985-10-16 |
| JPH0228020B2 true JPH0228020B2 (en) | 1990-06-21 |
Family
ID=13158263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6098684A Granted JPS60205041A (en) | 1984-03-30 | 1984-03-30 | Vibro-isolating mount |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60205041A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2921706A1 (en) * | 2007-09-27 | 2009-04-03 | Michelin Soc Tech | HYDROELASTIC ANTIVIBRATORY DEVICE |
| US9249857B2 (en) | 2007-12-12 | 2016-02-02 | Bridgestone Corporation | Anti-vibration apparatus |
| CN102066803B (en) * | 2008-06-17 | 2014-05-14 | 株式会社普利司通 | Vibration damping device |
| DE102008043693A1 (en) * | 2008-11-13 | 2010-05-20 | Zf Friedrichshafen Ag | hydromount |
| WO2010143444A1 (en) | 2009-06-10 | 2010-12-16 | 株式会社ブリヂストン | Vibrationproof device |
| CN112145611A (en) * | 2020-10-13 | 2020-12-29 | 衡阳智电客车有限责任公司 | A suitcase subassembly that is used for electricelectric moves commuter car can take electric temporarily |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56116518A (en) * | 1980-02-19 | 1981-09-12 | Nissan Motor Co Ltd | Engine mount of car |
-
1984
- 1984-03-30 JP JP6098684A patent/JPS60205041A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56116518A (en) * | 1980-02-19 | 1981-09-12 | Nissan Motor Co Ltd | Engine mount of car |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60205041A (en) | 1985-10-16 |
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