JPH024817B2 - - Google Patents
Info
- Publication number
- JPH024817B2 JPH024817B2 JP1473884A JP1473884A JPH024817B2 JP H024817 B2 JPH024817 B2 JP H024817B2 JP 1473884 A JP1473884 A JP 1473884A JP 1473884 A JP1473884 A JP 1473884A JP H024817 B2 JPH024817 B2 JP H024817B2
- Authority
- JP
- Japan
- Prior art keywords
- metal fitting
- fitting
- central member
- peripheral surface
- fluid
- 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
Links
- 239000002184 metal Substances 0.000 claims description 89
- 239000012530 fluid Substances 0.000 claims description 39
- 230000002093 peripheral effect Effects 0.000 claims description 24
- 239000000725 suspension Substances 0.000 claims description 22
- 238000004891 communication Methods 0.000 claims description 13
- 239000004033 plastic Substances 0.000 claims description 4
- 238000013016 damping Methods 0.000 description 5
- 230000000694 effects Effects 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
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000001012 protector Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004073 vulcanization Methods 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
- F16F13/14—Units of the bushing type, i.e. loaded predominantly radially
- F16F13/16—Units of the bushing type, i.e. loaded predominantly radially specially adapted for receiving axial loads
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Devices Of Dampers And Springs (AREA)
Description
【発明の詳細な説明】
〔技術分野〕
本発明はサスペンシヨンブツシユ、特に自動車
のサスペンシヨンブツシユに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to suspension bushings, and more particularly to suspension bushings for automobiles.
自動車における振動を最小にし、調和振動を制
御するとともに乗りここち性を最適にするため
に、種々のサスペンシヨンブツシユが開発されて
いる。 Various suspension bushes have been developed to minimize vibrations, control harmonic vibrations, and optimize ride comfort in automobiles.
自動車用のサスペンシヨンブツシユにあつて
は、自動車の前後方向剛性を少なく左右方向剛性
を高く、又前後方向に対して低動バネ、高減衰と
いう特性をもつサスペンシヨンブツシユの要求が
ある。 Regarding suspension bushes for automobiles, there is a demand for suspension bushes that have low stiffness in the longitudinal direction of the automobile, high stiffness in the lateral direction, and have characteristics such as low dynamic spring and high damping in the longitudinal direction.
［従来技術］
従来の流体封入サスペンシヨンブツシユは、ブ
ツシユの軸方向と垂直方向における内側金具と外
側金具の相対運動に対してブツシユ内に封入され
ている流体を一方の空間から他方の空間に移動さ
せ、応力の減衰効果を高めたり、剛性を変化させ
るものは知られている。しかし、内側金具と外側
金具の軸方向における相対運動に対して、密閉空
間内における流体を利用して減衰作用および剛性
低減等に用いる流体封入サスペンシヨンブツシユ
は知られていない。[Prior Art] A conventional fluid-filled suspension bushing moves the fluid sealed in the bushing from one space to the other space in response to relative movement between the inner fitting and the outer fitting in the axial direction and perpendicular direction of the bushing. It is known that the material can be moved to enhance the stress damping effect or change the rigidity. However, there is no known fluid-filled suspension bushing that utilizes fluid in a closed space to dampen and reduce rigidity against relative movement in the axial direction between the inner and outer fittings.
［発明の目的］
本発明は内側金具と外側金具の軸方向における
相対運動の剛性が低く、軸と垂直方向の剛性が高
い流体封入サスペンシヨンブツシユを提供するこ
とを目的とする。[Object of the Invention] An object of the present invention is to provide a fluid-filled suspension bushing that has low rigidity in the relative movement of an inner metal fitting and an outer metal fitting in the axial direction, and high rigidity in a direction perpendicular to the axis.
［発明の要約］
本発明の流体封入サスペンシヨンブツシユは、
同心軸的に配置された内側金具と外側金具と該内
側金具の外周面と該外側金具の内周面の間に介在
し、内部に少なくとも２個の内部空間を形成する
弾性体と該内部空間に封入された流体とで構成さ
れる流体封入サスペンシヨンブツシユにおいて、
該弾性体は該内側金具と該外側金具の軸方向の
両端部に位置し、各々該内側金具の外周面と該外
側金具の内周面に固定された２個の端部材と、該
内側金具と該外側金具の軸方向の中央部に位置
し、該２個の内部空間を隔離するとともに該内側
金具の外周面および該外側金具の内周面のいずれ
か一方に固定され、他方に摺動可能となり、か
つ、該２個の内部空間を連通する連通路を具備す
る少なくとも１個の中央部材とで構成されている
ことを特徴とするものである。[Summary of the Invention] The fluid-filled suspension bushing of the present invention comprises:
An inner metal fitting and an outer metal fitting arranged concentrically, an elastic body interposed between an outer peripheral surface of the inner metal fitting and an inner peripheral surface of the outer metal fitting and forming at least two internal spaces therein, and the internal space. In the fluid-filled suspension bushing, the elastic body is located at both axial ends of the inner metal fitting and the outer metal fitting, and the elastic body is located at both ends of the inner metal fitting and the outer metal fitting, respectively, and the elastic body is located at both ends of the inner metal fitting and the outer metal fitting, respectively. two end members fixed to the inner circumferential surface of the inner fitting, and two end members located in the axial center of the inner fitting and the outer fitting, isolating the two internal spaces and connecting the outer circumferential surface of the inner fitting and the outer fitting. At least one central member fixed to one of the inner circumferential surfaces of the outer metal fitting, capable of sliding on the other, and provided with a communication path that communicates the two internal spaces. It is characterized by:
本発明の流体封入サスペンシヨンブツシユで
は、内側金具と外側金具との軸方向における相対
移動に対して、両者の間に介在する弾性体はその
軸方向の両端部で曲げおよび引張り応力が作用
し、中央部では相対滑りによる摩擦力が作用す
る。これら曲げ引張応力および摩擦力は小さいた
め、軸方向の剛性が低くなる。一方、軸方向の相
対移動により中央部が内側金属および外側金具の
一方と相対的に滑るために、一方の密閉空間の流
体圧が増大し、他方の密閉空間の流体圧が減少す
る。このために高い流体圧の密閉空間から低い流
体圧の密閉空間に対して流体が中央部の連通路を
通つて移動する。この流体の移動により応力が効
果的に減衰する。又内側金具と外側金具の軸と垂
直方向の剛性は、主として弾性体の中央部の剛性
に依存する。この中央部を硬くすることにより、
軸と垂直方向の剛性を高くすることができる。こ
のためにブツシユの軸方向に対して低動バネ、高
減衰という特性をもち、軸と垂直方向には硬いバ
ネ特性をもつサスペンシヨンブツシユが得られ
る。 In the fluid-filled suspension bushing of the present invention, when the inner metal fitting and the outer metal fitting move relative to each other in the axial direction, bending and tensile stress acts on the elastic body interposed between the two at both ends in the axial direction. , frictional force due to relative sliding acts at the center. Since these bending tensile stress and frictional force are small, the rigidity in the axial direction becomes low. On the other hand, due to the relative movement in the axial direction, the central portion slides relative to one of the inner metal and the outer metal fitting, so the fluid pressure in one sealed space increases and the fluid pressure in the other sealed space decreases. For this reason, fluid moves from the closed space with high fluid pressure to the closed space with low fluid pressure through the communication passage in the center. This fluid movement effectively dampens stress. Further, the rigidity of the inner metal fitting and the outer metal fitting in the direction perpendicular to the axis mainly depends on the rigidity of the central portion of the elastic body. By making this central part hard,
It is possible to increase the rigidity in the direction perpendicular to the axis. For this reason, a suspension bushing can be obtained that has characteristics of low dynamic spring and high damping in the axial direction of the bushing, and hard spring characteristics in the direction perpendicular to the axis.
［発明の構成の詳細な説明］
本発明の流体封入サスペンシヨンブツシユは、
内側金具と外側金具と弾性体および流体とで構成
されている。[Detailed description of the structure of the invention] The fluid-filled suspension bushing of the invention includes:
It is composed of an inner metal fitting, an outer metal fitting, an elastic body, and a fluid.
ここで、内側金具とはブツシユの中心軸に位置
する部品で、断面円形あるいは楕円形等の外周面
を有する。この内側金具は中心貫通孔を有する円
筒体でもあるいは内部が充実した棒状体であつて
もよい。又通常内側金具には自動車のボデイある
いはエンジン等の部分に固定するためのバネ、係
合貫通孔等が設けられている。 Here, the inner metal fitting is a component located at the central axis of the bushing, and has an outer circumferential surface with a circular or elliptical cross section. This inner fitting may be a cylindrical body having a central through hole or a rod-like body with a solid interior. Further, the inner metal fitting is usually provided with a spring, an engaging through hole, etc. for fixing it to a part such as the body or engine of an automobile.
外側金具は上記した内側金具と同心軸的に配置
されるもので、中央貫通孔を形成する内周面をも
つ。この内周面の断面形状は円形でも楕円形でも
よい。外側金具の外周面形状については、特に問
題とされず、使用される目的により任意の外周面
形状とすることができる。通常は筒状である。又
この外側金具には自動車のエンジンあるいはボデ
イに固定されるための係合部材が設けられる。 The outer metal fitting is arranged coaxially with the above-mentioned inner metal fitting, and has an inner circumferential surface forming a central through hole. The cross-sectional shape of this inner peripheral surface may be circular or elliptical. There is no particular problem with the shape of the outer peripheral surface of the outer metal fitting, and the outer peripheral surface can have any shape depending on the purpose of use. Usually cylindrical. Further, this outer metal fitting is provided with an engaging member for fixing to the engine or body of the automobile.
弾性体は上記内側金具と外側金具の間に介在
し、内側金具と外側金具の軸方向の両端部に位置
する２個の端部材と内側金具と外側金具の軸方向
の中央部に位置する少なくとも１個の中央部材と
で構成される。各々の端部材は内側金具と外側金
具の軸方向の両端部に位置するため、内側金具の
外周面、外側金具の内周面の間を密閉する働きを
する。中央部材は同じく内側金具と外側金具の間
に介在し、内側金具の外周面および外側金具の内
周面のいずれか一方に固定され、他方に摺動可能
とされている。又内側金具、外側金具および中央
部材には連通路が設けられている。この連絡路は
中央部材を貫通するオリフイス状の細孔であつて
も、あるいは、摺動面に設けられた狭い隙間ある
いは摺動面に形成された細い溝であつてもよい。
この連通路は１個あるいは複数個設けることがで
きる。 The elastic body is interposed between the inner metal fitting and the outer metal fitting, and includes two end members located at both axial ends of the inner metal fitting and the outer metal fitting, and at least two end members located at the axial center of the inner metal fitting and the outer metal fitting. It consists of one central member. Since each end member is located at both ends in the axial direction of the inner metal fitting and the outer metal fitting, it functions to seal between the outer peripheral surface of the inner metal fitting and the inner peripheral surface of the outer metal fitting. The central member is similarly interposed between the inner metal fitting and the outer metal fitting, is fixed to either the outer circumferential surface of the inner fitting or the inner circumferential surface of the outer fitting, and is slidable on the other. Further, communication passages are provided in the inner metal fitting, the outer metal fitting, and the central member. This communication path may be an orifice-like pore passing through the central member, or may be a narrow gap provided in the sliding surface or a narrow groove formed in the sliding surface.
One or more communication passages may be provided.
内側金具および外側金具の軸と垂直方向の剛性
を高くするため、あるいは両金具の軸方向の中央
部と摺動する中央部材の摺動を容易にするため
に、内側金具、外側金具のいずれか一方に摺接す
る中央部材の部分を剛性の高いプラスチツクで構
成することができる。なお、端部材はゴムで構成
するのが好ましい。 In order to increase the rigidity of the inner and outer fittings in the direction perpendicular to their axes, or to facilitate the sliding of the central member that slides on the axial center of both fittings, either the inner fitting or the outer fitting is The part of the central member that slides on one side can be made of a highly rigid plastic. In addition, it is preferable that the end member is made of rubber.
弾性体と外側金具および内側金具の固定は接着
剤あるいは加硫接着等の接着で行なつてもよい。
あるいは機械的なかしめ等で行なつてもよい。機
械的にかしめで行なう場合には、弾性体中に金具
を埋設し、埋設された金具と例えば外側金具との
間で弾性体の一部を狭圧するような形態として固
定するのが好ましい。 The elastic body, outer metal fittings, and inner metal fittings may be fixed with an adhesive or adhesive such as vulcanization adhesive.
Alternatively, mechanical caulking or the like may be used. When caulking is performed mechanically, it is preferable to embed a metal fitting in the elastic body and fix the elastic body in such a manner that a part of the elastic body is compressed between the embedded metal fitting and, for example, an outer metal fitting.
弾性体の端部材と中央部材は一体的に形成して
も、個々に分離してもよい。また中央部材の摺動
面にはＯリング等のシール材を介在させることが
できる。 The end members and the central member of the elastic body may be integrally formed or may be individually separated. Further, a sealing material such as an O-ring may be interposed on the sliding surface of the central member.
中央部材の両側にそれぞれ合計２個の内部空間
が形成されている。即ち、各内部空間は外側金具
の内周面、内側金具の外周面および弾性体を構成
する端部材の内側面、中央部材の一方の側面とで
区画される。上記した連通路は、これらの２個の
内部空間を連通するものである。この内部空間に
は流体が封入されている。流体としては、水、
油、空気等が利用できる。流体が連通路を通過す
るときの抵抗により本発明の流体封入サスペンシ
ヨンブツシユの軸方向における応力の減衰率をコ
ントロールすることができる。 A total of two internal spaces are formed on each side of the central member. That is, each internal space is defined by the inner peripheral surface of the outer metal fitting, the outer peripheral surface of the inner metal fitting, the inner surface of the end member constituting the elastic body, and one side surface of the central member. The communication path described above communicates these two internal spaces. This internal space is filled with fluid. As a fluid, water,
Oil, air, etc. can be used. The resistance of the fluid as it passes through the communication passage allows the rate of stress attenuation in the axial direction of the fluid-filled suspension bushing of the present invention to be controlled.
弾性体の端部材と中央部材は一体的に構成する
ことも、あるいは端部材と中央部材を個々に分離
して形成してもよい。又中央部材は１個に限られ
ることなく２個、あるいはそれ以上設けることが
できる。かかる場合に内部空間は３個、あるいは
それ以上の内部空間が形成される。 The end members and the central member of the elastic body may be integrally formed, or the end members and the central member may be formed separately. Further, the number of central members is not limited to one, but two or more can be provided. In such a case, three or more internal spaces are formed.
［発明の効果］
本発明の流体封入サスペンシヨンブツシユは、
内側金具と外側金具の間に介在する弾性体が２個
の端部材と少なくとも１個の中央部材で構成さ
れ、２個の端部材がそれぞれ内側金具の外周面、
外側金具の内周面に機密的に固定されている。そ
して、中央部材が内側金具の外周面、外側金具の
内周面のいずれか一方に固定され、他方の面に摺
動可能である。従つて内側金具と外側金具を軸方
向に相対移動させた場合に中央部材が一方の端部
材に近接し、他方の端部材に対して遠ざかる。即
ち、中央部材の両側に形成されている２個の内部
空間の空間体積が中央部材の移動により変化し、
一方の内部空間内に封入されている流体の圧力が
高まり、他方の内部空間に封入されている流体の
流体圧が低下する。この流体圧の圧力差により流
体は中央部材に形成された連通路を通り一方の内
部空間から他方の内部空間に流れる。[Effects of the Invention] The fluid-filled suspension bushing of the present invention has the following effects:
The elastic body interposed between the inner metal fitting and the outer metal fitting is composed of two end members and at least one central member, and the two end members each have an outer peripheral surface of the inner metal fitting,
It is securely fixed to the inner peripheral surface of the outer metal fitting. The central member is fixed to either the outer peripheral surface of the inner metal fitting or the inner peripheral surface of the outer metal fitting, and is slidable on the other surface. Therefore, when the inner metal fitting and the outer metal fitting are moved relative to each other in the axial direction, the central member approaches one end member and moves away from the other end member. That is, the spatial volumes of the two internal spaces formed on both sides of the central member change due to the movement of the central member,
The pressure of the fluid sealed in one internal space increases, and the fluid pressure of the fluid sealed in the other internal space decreases. Due to this fluid pressure difference, fluid flows from one internal space to the other internal space through the communication passage formed in the central member.
内側金具と外側金具の軸方向の剛性は主として
端部材の剛性に依存している。これら端部材の軸
方向の厚さが比較的薄いために軸方向の剛性は低
い。又上記したように内部空間内の流体の移動に
より応力の減衰効果が高い。又軸と垂直方向の剛
性は、２個の端部材および中央部材の剛性で定ま
る。中央部材は高い剛性をもつプラスチツクス等
で作ることができるために、軸と垂直方向の剛性
を極めて高くすることができる。従つて本発明の
流体封入サスペンシヨンブツシユは、軸方向に対
して低動バネ、高減衰、軸と垂直方向に対して高
剛性バネとなる。 The axial rigidity of the inner and outer fittings depends primarily on the stiffness of the end members. The relatively thin axial thickness of these end members results in low axial stiffness. Furthermore, as described above, the movement of fluid within the internal space has a high stress damping effect. Moreover, the rigidity in the direction perpendicular to the axis is determined by the rigidity of the two end members and the central member. Since the central member can be made of high-rigidity plastic or the like, the rigidity in the direction perpendicular to the axis can be made extremely high. Therefore, the fluid-filled suspension bushing of the present invention has a low dynamic spring in the axial direction, a high damping spring, and a high rigidity spring in the direction perpendicular to the axis.
［実施例］
本発明の代表的な流体封入サスペンシヨンブツ
シユの縦断面図を第１図に示す。この流体封入サ
スペンシヨンブツシユは内側金具１、外側金具
２、弾性体３および２個のプロテクター４とで構
成されている。[Example] FIG. 1 shows a longitudinal cross-sectional view of a typical fluid-filled suspension bushing of the present invention. This fluid-filled suspension bushing is composed of an inner metal fitting 1, an outer metal fitting 2, an elastic body 3, and two protectors 4.
内側金具１は外径16mm、内径10mm、長さ80mmの
鋼管で形成されている。外側金具２は内径42mm、
外径45mm、長さ54mmで両端が軸方向にかしめられ
て折り曲げられた鋼管で形成されている。 The inner fitting 1 is made of a steel pipe with an outer diameter of 16 mm, an inner diameter of 10 mm, and a length of 80 mm. The outer metal fitting 2 has an inner diameter of 42 mm,
It is made of a bent steel tube with an outer diameter of 45 mm and a length of 54 mm, with both ends caulked in the axial direction.
弾性体３は２個の端部材３１，３２と主として
プラスチツクスで形成された中央部材３３とで構
成されている。２個の端部材３１，３２の外周面
近くには円筒状の鋼製リング３１１，３２１が一
体的に埋設されている。この弾性体は端部材３
１，３２、中央部材３３を含め内側金具１の外周
面に一体的に接合されている。なお、弾性体３の
中央部材３３の外側面と外側金具２の内周面は摺
動自在に構成されている。そして中央部材３３に
は直径２mmの２個の連通路３３１，３３２が形成
されている。 The elastic body 3 is composed of two end members 31, 32 and a central member 33 mainly made of plastic. Cylindrical steel rings 311, 321 are integrally buried near the outer peripheral surfaces of the two end members 31, 32. This elastic body is the end member 3
1, 32, and the central member 33 are integrally joined to the outer peripheral surface of the inner metal fitting 1. Note that the outer surface of the central member 33 of the elastic body 3 and the inner peripheral surface of the outer metal fitting 2 are configured to be slidable. Two communicating passages 331 and 332 each having a diameter of 2 mm are formed in the central member 33.
外側金具２と弾性体３との固定は、外側金具２
の両端部を軸方向にかしめ、両端部３１，３２に
埋設されたリング３１１，３２１と外側金具２と
の間で端部材３１，３２の一部のゴム材料が狭圧
され、水密的に固定されている。 The outer metal fitting 2 and the elastic body 3 are fixed together by the outer metal fitting 2.
Both ends of the end members 31, 32 are crimped in the axial direction, and a portion of the rubber material of the end members 31, 32 is compressed between the rings 311, 321 embedded in both ends 31, 32 and the outer metal fitting 2, and fixed in a watertight manner. has been done.
プロテクター４は内側金具１のそれぞれ両端部
に固定された金属円板上で直径約50mm、厚さ約５
mmのものである。端部材３１と中央部材３３の間
および端部材３２と中央部材３３の間にそれぞれ
リング状の内部空間５，６が形成されている。こ
の内部空間５，６にはエチレングリコール、プロ
ピレングリコールよりなる流体が封入されてい
る。 The protector 4 has a diameter of about 50 mm and a thickness of about 5 mm on metal discs fixed to both ends of the inner metal fitting 1.
mm. Ring-shaped internal spaces 5 and 6 are formed between the end member 31 and the central member 33 and between the end member 32 and the central member 33, respectively. The internal spaces 5 and 6 are filled with a fluid made of ethylene glycol and propylene glycol.
本実施例の流体封入サスペンシヨンブツシユは
以上の構成よりなる。このブツシユの内側金具１
を外側金具２に対して軸方向に相対移動させる
と、この相対移動により弾性体３の端部材３１，
３２が第１図上右あるいは左方向に変形する。中
央部材３３は中央部材３３の外周面と外側金具２
の内周面の間で滑り、内側金具１の移動方向にそ
つて移動する。この場合に軸方向の剛性は中央部
材の滑り抵抗が非常に小さいために弾性体３の両
端部３１，３２の変形抵抗だけとなる。このため
に極めて低い剛性のものが得られる。又この相対
移動により内部空間５および内部空間６のいずれ
か一方の流体圧が高まり他方の流体圧が低くな
る。この流体圧の圧力差により流体は中央部材３
３の連通路３３１，３３２を通り一方より他方に
移動する。これにより相対移動による応力が緩和
され、応力が減衰する。 The fluid-filled suspension bushing of this embodiment has the above structure. Inner metal fitting 1 of this bushing
is moved relative to the outer metal fitting 2 in the axial direction, this relative movement causes the end members 31 of the elastic body 3,
32 deforms to the right or to the left in FIG. The central member 33 is connected to the outer peripheral surface of the central member 33 and the outer metal fitting 2.
The metal fitting 1 slides between the inner peripheral surfaces of the metal fitting 1 and moves along the moving direction of the inner metal fitting 1. In this case, the axial rigidity is determined only by the deformation resistance of both ends 31 and 32 of the elastic body 3 because the sliding resistance of the central member is very small. This results in extremely low stiffness. Also, due to this relative movement, the fluid pressure in either the internal space 5 or the internal space 6 increases, and the fluid pressure in the other decreases. This fluid pressure difference causes the fluid to flow to the central member 3.
3 through communication paths 331 and 332 and moves from one side to the other. This relieves the stress caused by the relative movement and attenuates the stress.
内側金具１と外側金具２の軸と垂直方向の移動
に対しては、端部材３１，３２に圧縮応力と引張
り応力、および中央部材３３に圧縮応力が作用す
る。中央部材３３は剛性の高い樹脂で構成するこ
とができるため、中央部材３３の剛性を高いもの
とすることができる。従つて軸と垂直方向の剛性
を極めて高いものとすることができる。 When the inner fitting 1 and the outer fitting 2 move in the direction perpendicular to the axis, compressive stress and tensile stress act on the end members 31 and 32, and compressive stress acts on the central member 33. Since the central member 33 can be made of resin with high rigidity, the rigidity of the central member 33 can be made high. Therefore, the rigidity in the direction perpendicular to the axis can be made extremely high.
なお、本実施例では中央部材３３を内側金具１
に固定したが、第２図にその要部断面を示すよう
に中央部材３４を外側金具２に固定することもで
きる。又連通路として第２図に示すように中央部
材３４の内周面で構成される摺動面に一定の溝を
形成し、その溝を連通路３４１とすることができ
る。又要部断面を第３図に示すように、中央部材
３５とそれと摺動する内側金具１の外周面（ある
いは外側金具の内周面）との間にシール３５１を
介在させ、中央部材３５の摺動面における液密を
より確実にするものとすることもできる。この場
合に連通路３５２は中央部材３５の貫通孔で形成
する。 In addition, in this embodiment, the central member 33 is connected to the inner metal fitting 1.
Although the central member 34 is fixed to the outer metal fitting 2, the central member 34 can also be fixed to the outer metal fitting 2, as shown in a cross section of the main part in FIG. Further, as shown in FIG. 2, a certain groove can be formed in the sliding surface of the inner circumferential surface of the central member 34 as the communicating path, and this groove can be used as the communicating path 341. As shown in FIG. 3, a cross section of the main part, a seal 351 is interposed between the central member 35 and the outer circumferential surface of the inner fitting 1 that slides thereon (or the inner circumferential surface of the outer fitting). It is also possible to further ensure liquid tightness on the sliding surface. In this case, the communication path 352 is formed by a through hole in the central member 35.
第１図は本発明の実施例の流体封入サスペンシ
ヨンブツシユの縦断面図、第２図は第１図の変形
例にあたるブツシユの要部断面図、第３図は他の
変形例の要部断面図である。
１…内側金具、２…外側金具、３…弾性体、３
１，３２…端部材、３３，３４，３５…中央部
材、３３１，３４１，３５２…連通路、４…プロ
テクター、５，６…内部空間。
FIG. 1 is a longitudinal sectional view of a fluid-filled suspension bushing according to an embodiment of the present invention, FIG. 2 is a sectional view of a main part of a bushing that is a modification of FIG. 1, and FIG. 3 is a main part of another modification. FIG. 1...Inner metal fitting, 2...Outer metal fitting, 3...Elastic body, 3
DESCRIPTION OF SYMBOLS 1, 32... End member, 33, 34, 35... Central member, 331, 341, 352... Communication path, 4... Protector, 5, 6... Internal space.
Claims (1)
該内側金具の外周面と該外側金具の内周面の間に
介在し、内部に少なくとも２個の内部空間を形成
する弾性体と該内部空間内に封入された流体とで
構成される流体封入サスペンシヨンブツシユにお
いて、 該弾性体は、該内側金具と該外側金具の軸方向
の両端部に位置し、各々該内側金具の外周面と該
外側金具の内周面に固定された２個の端部材と、
該内側金具と該外側金具の軸方向の中央部に位置
し、該２個の内部空間を隔離するとともに該内側
金具の外周面および該外側金具の内周面のいずれ
か一方に固定され、他方に摺動可能となり、か
つ、該２個の内部空間を連通する連通路を具備す
る少なくとも１個の中央部材とで構成されている
ことを特徴とする流体封入サスペンシヨンブツシ
ユ。 ２ 中央部材の少なくとも内側金具の外周面、外
側金具の内周面のいずれか一方と摺接する部分が
プラスチツクで構成され、中央部材の他の部分お
よび端部材がゴムで構成されている特許請求の範
囲第１項記載のブツシユ。 ３ 連通路はオリフイスである特許請求の範囲第
１項記載のブツシユ。[Claims] 1. An inner fitting and an outer fitting arranged concentrically, interposed between an outer circumferential surface of the inner fitting and an inner circumferential surface of the outer fitting, forming at least two internal spaces therein. In the fluid-filled suspension bushing, the elastic body is located at both ends in the axial direction of the inner metal fitting and the outer metal fitting, and the elastic body is located at both ends of the inner metal fitting and the outer metal fitting, respectively. two end members fixed to the outer peripheral surface of the inner metal fitting and the inner peripheral surface of the outer metal fitting;
located at the center in the axial direction of the inner metal fitting and the outer metal fitting, isolating the two internal spaces, and is fixed to either the outer peripheral surface of the inner metal fitting or the inner peripheral surface of the outer metal fitting; 1. A fluid-filled suspension bushing comprising: at least one central member which is slidable in the central member and has a communication passage communicating the two internal spaces. 2. A patent claim in which at least the portion of the central member that makes sliding contact with either the outer peripheral surface of the inner metal fitting or the inner peripheral surface of the outer metal fitting is made of plastic, and the other parts of the central member and the end members are made of rubber. Bushes listed in Item 1 of the scope. 3. The bush according to claim 1, wherein the communication passage is an orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1473884A JPS60159436A (en) | 1984-01-30 | 1984-01-30 | Fluid enclosed suspension bush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1473884A JPS60159436A (en) | 1984-01-30 | 1984-01-30 | Fluid enclosed suspension bush |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60159436A JPS60159436A (en) | 1985-08-20 |
| JPH024817B2 true JPH024817B2 (en) | 1990-01-30 |
Family
ID=11869460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1473884A Granted JPS60159436A (en) | 1984-01-30 | 1984-01-30 | Fluid enclosed suspension bush |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60159436A (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60184741A (en) * | 1984-03-01 | 1985-09-20 | Kurashiki Kako Kk | Elastic bush |
| JPH0629636B2 (en) * | 1984-08-08 | 1994-04-20 | 倉敷化工株式会社 | Elastic support device |
| JPH0536101Y2 (en) * | 1985-04-12 | 1993-09-13 | ||
| FR2599450B1 (en) * | 1986-06-03 | 1990-08-10 | Hutchinson | IMPROVEMENTS ON HYDRAULIC ANTI-VIBRATION SUPPORT SLEEVES |
| JPH0430442Y2 (en) * | 1986-06-30 | 1992-07-22 | ||
| FR2605693B1 (en) * | 1986-10-27 | 1989-04-28 | Hutchinson | IMPROVEMENTS ON ANTI-VIBRATION HYDRAULIC SUPPORTS |
| JPS63266240A (en) * | 1987-04-23 | 1988-11-02 | Mazda Motor Corp | Fluid-filled bush |
| DE3722376A1 (en) * | 1987-07-07 | 1989-01-19 | Bayerische Motoren Werke Ag | FLUID FILLED RUBBER BEARING |
| JPH0193640A (en) * | 1987-10-05 | 1989-04-12 | Tokai Rubber Ind Ltd | Liquid enclosed cylindrical mount device |
| DE3905686C1 (en) * | 1989-02-24 | 1990-06-07 | Fa. Carl Freudenberg, 6940 Weinheim, De | |
| JPH02117450U (en) * | 1989-03-09 | 1990-09-20 | ||
| DE102005047018B4 (en) * | 2005-09-30 | 2014-05-08 | Carl Freudenberg Kg | Elastomeric bearing with hydraulic damping |
| TWI289496B (en) * | 2006-06-29 | 2007-11-11 | Kow-Je Ling | Grinding tool for the end of workpiece |
| JP2016065557A (en) * | 2014-09-23 | 2016-04-28 | 東洋ゴム工業株式会社 | Liquid sealed type vibration-proof device |
-
1984
- 1984-01-30 JP JP1473884A patent/JPS60159436A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60159436A (en) | 1985-08-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH055305Y2 (en) | ||
| JPH0225947Y2 (en) | ||
| US4822010A (en) | Fluid filled resilient bushing | |
| US4971456A (en) | Fluid-filled elastic center bearing mount | |
| JPH024817B2 (en) | ||
| US5954317A (en) | Hydraulically damping rubber bearing | |
| JP2005505734A (en) | Fluid elastic ball joint | |
| JPH0724674Y2 (en) | Upper support for suspension | |
| JPS6361536B2 (en) | ||
| JPS63318339A (en) | Vibration absorbing device | |
| JPS61206838A (en) | Bush assembling body with fluid | |
| JPH08177945A (en) | Fluid sealing type cylindrical vibration proof device | |
| JPH01210638A (en) | Hydraulic shock absorption type sleeve type rubber shock absorber | |
| JPH03107637A (en) | Sleeve-shaped rubber spring for automobile bearing, having hydraulic damping function | |
| JP2004518927A (en) | Hydraulic damping bush bearing | |
| JPS60179542A (en) | Liquid containing bushing | |
| JPH0320138A (en) | Fluid sealed type cylindrical mount device | |
| JPH0229899B2 (en) | ||
| JPH028173B2 (en) | ||
| JPH0629636B2 (en) | Elastic support device | |
| JPS62184249A (en) | Fluid enclosing-type vibro-isolating support body | |
| JPH026935B2 (en) | ||
| JPS60113836A (en) | Mount filled with fluid | |
| JPH0443636Y2 (en) | ||
| JPH0227536B2 (en) |