JPH0457905B2 - - Google Patents
Info
- Publication number
- JPH0457905B2 JPH0457905B2 JP59040139A JP4013984A JPH0457905B2 JP H0457905 B2 JPH0457905 B2 JP H0457905B2 JP 59040139 A JP59040139 A JP 59040139A JP 4013984 A JP4013984 A JP 4013984A JP H0457905 B2 JPH0457905 B2 JP H0457905B2
- Authority
- JP
- Japan
- Prior art keywords
- fluid
- elastic body
- elastic
- chamber
- communication hole
- 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
- F16F13/08—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
- F16F13/14—Units of the bushing type, i.e. loaded predominantly radially
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Devices Of Dampers And Springs (AREA)
Description
本発明は自動車等車両用サスペンシヨンに用い
る弾性ブツシユに関するもので、弾性体中に非圧
縮性流体を封入した複合弾性ブツシユの改良を目
的に開発したものである。
The present invention relates to an elastic bushing used in a suspension for a vehicle such as an automobile, and was developed for the purpose of improving a composite elastic bushing in which an incompressible fluid is sealed in an elastic body.
一般のサスペンシヨンブツシユは車両懸架のた
めに所定の支軸が挿入される内筒金具と、これと
同心的に配置される外筒金具との間にゴム材料か
らなる弾性体のスリーブが介在した構造である
が、荷重方向によつて振動の減衰特性を変化させ
るために、ゴム弾性体内にすぐり穴を設けたり、
非圧縮性流体を封入する等の手法が用いられてい
る。
特にゴム弾性体内の軸直角方向の対称位置へ非
圧縮性流体を封入するホールを設け、ホール間を
オリフイスで連通させ、各ホール及びオリフイス
に流体を充填した構造の複合ブツシユが開発さ
れ、自動車のサスペンシヨンブツシユとしてかな
り良好な振動減衰特性のものが得られている。し
かしながら、このような複合ブツシユを使用して
も、走行中に突起を乗り越した時などに生じるブ
ルブル感を解消するため減衰を大きくすると、高
周波領域になるにつれて内部液体の慣性抵抗が次
第に大きくなり、ついには、オリフイスを流体が
通過しなくなり、内筒と外筒間に弾性体を介在さ
せていたとしても、その間で見かけ上剛体にな
り、高周波領域での振動伝達特性を著しく悪化さ
せる欠点があつた。
In general suspension bushings, an elastic sleeve made of rubber material is interposed between an inner cylindrical metal fitting into which a predetermined support shaft is inserted for vehicle suspension, and an outer cylindrical metal fitting arranged concentrically with the inner cylindrical metal fitting. However, in order to change the vibration damping characteristics depending on the load direction, hollow holes are provided in the rubber elastic body,
Techniques such as enclosing an incompressible fluid are used. In particular, a composite bushing has been developed in which holes for sealing an incompressible fluid are provided at symmetrical positions in the direction perpendicular to the axis within a rubber elastic body, the holes are communicated through orifices, and each hole and orifice is filled with fluid. A suspension bush with fairly good vibration damping characteristics has been obtained. However, even if such a composite bushing is used, if the damping is increased to eliminate the bubbly feeling that occurs when driving over a bump while driving, the inertial resistance of the internal liquid will gradually increase as the frequency range increases. Eventually, fluid will no longer pass through the orifice, and even if an elastic body is interposed between the inner and outer cylinders, it will appear to be a rigid body between them, which has the disadvantage of significantly deteriorating the vibration transmission characteristics in the high frequency range. Ta.
本発明に係る弾性ブツシユは、低周波数、大振
幅領域での減衰特性と、高周波数微少振幅時の振
動伝達特性の両特性を満足させる構造でブルブル
感をなくすると同時に、高周波領域での振動伝達
特性を改善し、あらゆる領域での快適走行可能な
高性能の弾性ブツシユを提供するものである。
The elastic bushing according to the present invention has a structure that satisfies both the damping characteristics in the low frequency, large amplitude region and the vibration transmission characteristics in the high frequency and minute amplitude region, eliminating the bulging feeling, and at the same time, transmitting vibration in the high frequency region. It provides a high-performance elastic bushing with improved characteristics that enables comfortable driving in all areas.
その構造上の特徴は、内外筒間弾性体の軸直角
方向のほぼ対称位置にそれぞれベローズを介して
流体室と空気室とを設け、かつ相対する流体室間
に連通孔を設けると共に各空気室を独立密閉室と
した点にある。そして、本発明品は上記特性に加
えて、過大負荷時の過大変形を防止するストツパ
ー機能をも備えて弾性ブツシユの耐久性について
も配慮した構造となつている。
Its structural features are that a fluid chamber and an air chamber are provided at almost symmetrical positions in the direction perpendicular to the axis of the elastic body between the inner and outer cylinders via bellows, and a communication hole is provided between the opposing fluid chambers, and each air chamber is provided with a communication hole. The point is that it is an independent sealed room. In addition to the above-mentioned characteristics, the product of the present invention has a structure that takes into consideration the durability of the elastic bushing by having a stopper function to prevent excessive deformation under excessive load.
以下例示図面によつて本発明を詳細に説明す
る。
第１図は弾性ブツシユの縦断面図であり、第２
図は第１図中Ａ−Ａ部断面図である。第３図は他
の実施例を示す縦断面図である。第４図は第３図
中Ｂ−Ｂ部断面図である。
これらの図にみられる本発明の弾性ブツシユ
は、特にトレーリングリンクブツシユとして有用
であり、内筒１は内側弾性体３へ固着され、外筒
２は外側弾性体４へ固定されて用いられる。第１
図及び第２図に例示した弾性ブツシユにおいて
は、内側弾性体３の軸直角方向対称位置に流体室
５が設けられている。この相対する２つの流体室
５，５は内筒１に外挿したリング材６によつて形
成された連通孔７によつて連通されている。リン
グ材６は真円のものに限らず、楕円その他の変形
リングを使うことができ、内筒１に対してカシメ
とか溶接によつて止めることができる。連通孔７
は導入部１２，１２によつて流体室５，５と連通
状態になつている。流体室５には要望される振動
特性に従つてシリコン油、グリコール類、水、グ
リースなどを適当に混合した流体が充填される。
外側弾性体４には空気室８が設けられており、こ
の空気室８は外筒２によつて、第１，２図にみら
れるようにそれぞれが独立密閉室に形成されてい
る。空気室８と流体室５との間はベローズ９とな
つている。内側弾性体３とベローズ９間のシール
性を高めるために、ベローズは外側弾性体４と一
体化し、かつこれに締付外環１０を装備し、更に
内側弾性体３へ内環１１を一体化して、これに締
付外環１０と一体化されたベローズ９及び外側弾
性体４を圧入又は圧入接着している。このとき、
締付外環１０を内環側へかしめると更にシール性
が向上する。
第３図及び第４図に示したものも上記同様に本
発明の目的を達成することができる。すなわち、
この例では逆に外側弾性体４に流体室５が設けら
れ、内側弾性体３に空気室８が設けられている。
相対する流体室５，５は外筒２へ溝状に設けられ
た連通孔７によつて連通状態となつている。空気
室８はこの例では一周しているが、部分的に形成
してもよい。
これら例示した弾性ブツシユは空気室と流体室
の容積割合、連通孔（オリフイス）の径を車種等
に要求される振動減衰特性によつて変える。ま
た、第３図及び第４図に示した例では、連通孔は
全周でなく片側にのみ設けるとか、一方を大径と
し、他方を小径とすることによつて性能に変化を
もたせることもできる。更に、第４図中２点鎖線
で示したように連通孔の途中に電磁弁１３等によ
る弁体を出し入れする構造として、これを制御し
て振動減衰特性を変化させることもできる。
The present invention will be explained in detail below with reference to illustrative drawings. FIG. 1 is a longitudinal cross-sectional view of the elastic bushing, and the second
The figure is a sectional view taken along the line AA in FIG. FIG. 3 is a longitudinal sectional view showing another embodiment. FIG. 4 is a sectional view taken along line BB in FIG. 3. The elastic bushing of the present invention shown in these figures is particularly useful as a trailing link bushing, in which the inner cylinder 1 is fixed to the inner elastic body 3 and the outer cylinder 2 is fixed to the outer elastic body 4. . 1st
In the elastic bush illustrated in the figures and FIG. 2, fluid chambers 5 are provided at symmetrical positions in the axis-perpendicular direction of the inner elastic body 3. These two opposing fluid chambers 5, 5 are communicated with each other through a communication hole 7 formed by a ring member 6 fitted onto the inner cylinder 1. The ring material 6 is not limited to a perfect circle, but may be an oval or other deformed ring, and can be secured to the inner cylinder 1 by caulking or welding. Communication hole 7
are in communication with the fluid chambers 5, 5 through introduction portions 12, 12. The fluid chamber 5 is filled with a fluid containing an appropriate mixture of silicone oil, glycols, water, grease, etc. according to the desired vibration characteristics.
The outer elastic body 4 is provided with an air chamber 8, and each of the air chambers 8 is formed into an independent sealed chamber by the outer tube 2, as shown in FIGS. 1 and 2. A bellows 9 is provided between the air chamber 8 and the fluid chamber 5. In order to improve the sealing performance between the inner elastic body 3 and the bellows 9, the bellows is integrated with the outer elastic body 4 and equipped with a tightening outer ring 10, and furthermore, the inner ring 11 is integrated with the inner elastic body 3. Then, the bellows 9 integrated with the tightening outer ring 10 and the outer elastic body 4 are press-fitted or press-fitted and bonded thereto. At this time,
If the tightening outer ring 10 is caulked toward the inner ring, the sealing performance is further improved. The objects shown in FIGS. 3 and 4 can also achieve the object of the present invention in the same manner as described above. That is,
In this example, on the contrary, the outer elastic body 4 is provided with a fluid chamber 5, and the inner elastic body 3 is provided with an air chamber 8.
The opposing fluid chambers 5 and 5 are in communication with each other through a communication hole 7 provided in the outer cylinder 2 in the form of a groove. Although the air chamber 8 has a circumference in this example, it may be formed partially. In these exemplified elastic bushes, the volume ratio of the air chamber and the fluid chamber and the diameter of the communication hole (orifice) are changed depending on the vibration damping characteristics required for the vehicle type, etc. In addition, in the examples shown in Figures 3 and 4, the performance can be changed by providing the communication hole only on one side instead of all around it, or by making one side larger and the other smaller. can. Furthermore, as shown by the two-dot chain line in FIG. 4, the vibration damping characteristics can be changed by controlling a structure in which a valve body such as the electromagnetic valve 13 is moved in and out in the middle of the communication hole.
上記のように、弾性体にベローズをはさんで空
気室と流体室を設けることにより、下記に示すよ
うな作用効果がある。すなわち、その作用効果を
第１図の例により説明すると、外筒２を固定して
内筒１をＸ（＋）側に変位させると、流体室５の
流体は一方のベローズ９を介して空気室８の内部
に押し込まれ、さらにそれ以上の変位が加わる
と、流体室５の流体は連通孔７を通つて反対側Ｘ
（−）側の流体室に押し込まれ、連通孔の抵抗に
より減衰を生じる。
この作用を具体的に説明すると、突起乗り越し
時等の低周波大振幅時には、内部の流体が連通孔
を通過して減衰が生じるが、ロードノイズを生じ
るような微小振幅高周波領域では、流体の慣性抵
抗が大きく、連通孔を流体が通過しなくてもベロ
ーズ９が空気室側にひろがり、体積補償をするこ
とによつて高周波の伝達特性が大幅に改善でき
る。以上のように、本発明は特にサスペンシヨン
に使用される弾性ブツシユに要求されるあらゆる
領域において高性能の弾性ブツシユを提供するも
のである。
As described above, by providing the air chamber and the fluid chamber by sandwiching the bellows between the elastic bodies, the following effects can be obtained. That is, to explain its effect using the example shown in FIG. 1, when the outer cylinder 2 is fixed and the inner cylinder 1 is displaced to the When pushed into the chamber 8 and subjected to further displacement, the fluid in the fluid chamber 5 passes through the communication hole 7 to the opposite side X.
It is pushed into the fluid chamber on the (-) side, causing attenuation due to the resistance of the communication hole. To explain this effect in detail, when low frequency and large amplitude occur, such as when going over a bump, the internal fluid passes through the communication hole and attenuation occurs, but in a small amplitude and high frequency region that causes road noise, the inertia of the fluid causes damping. Even if the resistance is large and the fluid does not pass through the communication hole, the bellows 9 spreads toward the air chamber side, and by performing volume compensation, the high frequency transmission characteristics can be greatly improved. As described above, the present invention provides an elastic bushing with high performance in all areas required for elastic bushings used particularly in suspensions.
第１図は弾性ブツシユの縦断面図であり、第２
図は第１図中Ａ−Ａ部断面図である。第３図は他
の実施例を示す縦断面図である。第４図は第３図
中Ｂ−Ｂ部断面図である。
１……内筒、２……外筒、３……内側弾性体、
４……外側弾性体、５……流体室、６……リング
材、７……連通孔、８……空気室、９……ベロー
ズ、１０……締付外環、１１……内環、１２……
導入部。
FIG. 1 is a longitudinal cross-sectional view of the elastic bushing, and the second
The figure is a sectional view taken along the line AA in FIG. FIG. 3 is a longitudinal sectional view showing another embodiment. FIG. 4 is a sectional view taken along line BB in FIG. 3. 1...Inner cylinder, 2...Outer cylinder, 3...Inner elastic body,
4... Outer elastic body, 5... Fluid chamber, 6... Ring material, 7... Communication hole, 8... Air chamber, 9... Bellows, 10... Tightening outer ring, 11... Inner ring, 12...
Introduction.
Claims (1)
作用を有する弾性ブツシユにおいて、弾性体の軸
直角方向のほぼ対称位置にそれぞれベローズを介
して流体室と空気室とを設け、かつ相対する流体
室間に連通孔を設けると共に各空気室を独立密閉
室としてなることを特徴とする弾性ブツシユ。1. In an elastic bushing having a damping effect in the direction perpendicular to the axis via an elastic body between the inner and outer cylinders, a fluid chamber and an air chamber are provided at substantially symmetrical positions in the direction perpendicular to the axis of the elastic body through bellows, and are opposed to each other. An elastic bushing characterized in that communication holes are provided between fluid chambers and each air chamber is an independent sealed chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4013984A JPS60184740A (en) | 1984-03-01 | 1984-03-01 | Elastic bush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4013984A JPS60184740A (en) | 1984-03-01 | 1984-03-01 | Elastic bush |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60184740A JPS60184740A (en) | 1985-09-20 |
| JPH0457905B2 true JPH0457905B2 (en) | 1992-09-16 |
Family
ID=12572446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4013984A Granted JPS60184740A (en) | 1984-03-01 | 1984-03-01 | Elastic bush |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60184740A (en) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0754131B2 (en) * | 1984-09-07 | 1995-06-07 | 株式会社ブリヂストン | Anti-vibration device |
| JPS6241439A (en) * | 1985-08-20 | 1987-02-23 | Tokai Rubber Ind Ltd | Center bearing mount |
| JPH0689806B2 (en) * | 1986-01-20 | 1994-11-14 | 株式会社ブリヂストン | Anti-vibration device |
| US4974819A (en) * | 1986-02-14 | 1990-12-04 | Cooper Tire & Rubber Company | Mount for controlling or isolating vibration |
| JPS62224746A (en) * | 1986-03-27 | 1987-10-02 | Tokai Rubber Ind Ltd | Fluid seal type vibrationproof supporting body |
| US4795140A (en) * | 1986-12-30 | 1989-01-03 | Bridgestone Corporation | Vibration isolating apparatus |
| FR2610055B1 (en) * | 1987-01-23 | 1991-07-19 | Caoutchouc Manuf Plastique | ANTI-VIBRATION INSULATION DEVICE WITH HYDRAULICALLY DAMPING RADIAL ELASTICITY AND METHODS OF MAKING SUCH A DEVICE |
| JP2790452B2 (en) * | 1987-06-19 | 1998-08-27 | 株式会社ブリヂストン | Anti-vibration device |
| JP2848525B2 (en) * | 1987-10-28 | 1999-01-20 | 株式会社ブリヂストン | Anti-vibration device |
| US5280885A (en) * | 1988-04-07 | 1994-01-25 | Bridgestone Corporation | Vibration isolating apparatus |
| US5040774A (en) * | 1990-04-09 | 1991-08-20 | The Pullman Company | Hydraulic damping bushing |
| FR2747166B1 (en) * | 1996-04-04 | 1998-06-12 | Hutchinson | IMPROVEMENTS ON HYDRAULIC ANTI-VIBRATION SUPPORT SLEEVES |
| DE19845979C2 (en) * | 1998-10-06 | 2003-07-03 | Zf Boge Gmbh | Hydraulically damping rubber bearing |
| DE102007015239B4 (en) * | 2007-03-29 | 2012-03-29 | Trelleborg Automotive Germany Gmbh | Elastic bushing |
| AT526283A1 (en) * | 2022-06-28 | 2024-01-15 | Siemens Mobility Austria Gmbh | Fluidic coupling device and chassis |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57161331A (en) * | 1981-03-30 | 1982-10-04 | Toyoda Gosei Co Ltd | Vibration preventive device sealed with liquid |
| JPS58203242A (en) * | 1982-05-22 | 1983-11-26 | Tokai Rubber Ind Ltd | Suspension bush and manufacturing method thereof |
| JPS60139507A (en) * | 1983-12-27 | 1985-07-24 | Nissan Motor Co Ltd | Cylindrical bush |
-
1984
- 1984-03-01 JP JP4013984A patent/JPS60184740A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60184740A (en) | 1985-09-20 |
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