JPS59212551A - Shock absorber - Google Patents
Shock absorberInfo
- Publication number
- JPS59212551A JPS59212551A JP8403083A JP8403083A JPS59212551A JP S59212551 A JPS59212551 A JP S59212551A JP 8403083 A JP8403083 A JP 8403083A JP 8403083 A JP8403083 A JP 8403083A JP S59212551 A JPS59212551 A JP S59212551A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- cylindrical
- axle side
- bearing
- side member
- 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.)
- Pending
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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/54—Arrangements for attachment
-
- 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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/06—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid
- F16F9/08—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid where gas is in a chamber with a flexible wall
- F16F9/084—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using both gas and liquid where gas is in a chamber with a flexible wall comprising a gas spring contained within a flexible wall, the wall not being in contact with the damping fluid, i.e. mounted externally on the damper cylinder
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Vehicle Body Suspensions (AREA)
- Vibration Prevention Devices (AREA)
Abstract
Description
【発明の詳細な説明】 この発明は防振装置の改良に関するものである。[Detailed description of the invention] This invention relates to an improvement in a vibration isolator.
従来のこの種の防振装置としては、たとえば第1図に示
すものがある。As a conventional vibration isolator of this type, there is one shown in FIG. 1, for example.
図中1はテレスコープ型の減衰器を示し、従来既知のシ
ョックアブソーバとすることができるこの減衰器lは、
この例では、シリンダー1aと、このシリンダー1a内
を二個の液室に区画する図示しないピストンと、ピスト
ンに設けたこれも図示しないオリフィスおよびバルブと
、ピストンに固着シたピストンロッド1bとを具える。In the figure, 1 indicates a telescope type attenuator, and this attenuator l, which can be a conventionally known shock absorber, is
This example includes a cylinder 1a, a piston (not shown) that divides the inside of the cylinder 1a into two liquid chambers, an orifice and a valve (also not shown) provided in the piston, and a piston rod 1b fixed to the piston. I can do it.
ここでピストンロッド1bは、それを囲繞する筒部材2
の硬質頂壁2aに溶接その他によって堅固に連結されて
おり、捷たその硬質頂壁2aから外側へ向けて突出させ
て設けた軸部3には、ラジアルボールベアリング4およ
びマウントゴム5を順次に介して車体側への取付部材と
してのブラケット6が連結されている。一方、シリンダ
ー1aは、その下端部に設けたアイICによって回動部
材としての車軸側部材に連結され、また、それは一端部
をシリンダー1aの外周に、他端部を筒部材2の外周に
それぞれ気密に固着した筒状可撓膜7によって筒部材2
に連結されており、そしてこれらのシリンダー1a、筒
部材2および筒状可撓膜7で気体室の一例としての空気
室8が構成されている。Here, the piston rod 1b is connected to a cylindrical member 2 surrounding it.
A radial ball bearing 4 and a mount rubber 5 are sequentially attached to a shaft portion 3 which is firmly connected to a hard top wall 2a by welding or other means and protrudes outward from the broken hard top wall 2a. A bracket 6 serving as a mounting member to the vehicle body is connected therebetween. On the other hand, the cylinder 1a is connected to an axle side member as a rotating member by an eye IC provided at its lower end, and one end is connected to the outer periphery of the cylinder 1a, and the other end is connected to the outer periphery of the cylindrical member 2. The cylindrical member 2 is sealed by the cylindrical flexible membrane 7 which is airtightly fixed.
The cylinder 1a, the cylindrical member 2, and the cylindrical flexible membrane 7 constitute an air chamber 8 as an example of a gas chamber.
このような従来装置によれば、空気室8への圧縮空気の
給排によシ、たとえば車体側へ作用する荷重の大小に応
じた車高調整が行われ、また、装置へ伝達される低周波
小振幅振動および大振幅の振動は、減衰器内での液体の
流動抵抗および空気室内の空気の体積変化にニジ減衰さ
れる。そしてさらに、車軸側からシリンダー1aへ伝達
されるたとえば車両の操舵に基づく、シリンダー1aの
軸線の周りの図に矢印Aで示すような角運動は、筒状可
撓膜7および筒部材2を経てラジアルボールベアリング
4で吸収されることになる。According to such a conventional device, the vehicle height is adjusted depending on the magnitude of the load acting on the vehicle body side, for example, by supplying and discharging compressed air to the air chamber 8, and also adjusts the vehicle height depending on the magnitude of the load acting on the vehicle body side. Frequency small-amplitude vibrations and large-amplitude vibrations are damped by the flow resistance of the liquid within the damper and the volume change of the air within the air chamber. Further, the angular movement around the axis of the cylinder 1a as shown by the arrow A in the figure, which is transmitted from the axle side to the cylinder 1a based on, for example, the steering of the vehicle, is transmitted through the cylindrical flexible membrane 7 and the cylindrical member 2. It will be absorbed by the radial ball bearing 4.
ところが、かかる従来技術にあっては、防振装置の一端
部に連結される回動部材から最も離れた端部、図示例で
は上端部にラジアルボールベアリング4が設けられてい
ることから、上述した角運動の吸収に際し、とくに筒状
可撓膜7に捩p変形が生じ、その故に、筒状可撓膜7の
耐久性が低下する間顕があった。However, in this prior art, since the radial ball bearing 4 is provided at the end farthest from the rotating member connected to one end of the vibration isolator, which is the upper end in the illustrated example, the above-mentioned problem arises. When absorbing the angular motion, torsional deformation occurs particularly in the cylindrical flexible membrane 7, and as a result, the durability of the cylindrical flexible membrane 7 deteriorates.
この発明は、従来技術のこの工うな問題を有利に解決し
た防振装置を提供するものであシ、とくに、気体室を具
える防振装置において、減衰器と回動部材との連結部に
、ラジアルもしくはスラストベアリングを介装すること
により、回動部材の角運動を筒状可撓膜に伝達すること
なく吸収するものである。The present invention provides a vibration isolator which advantageously solves this problem of the prior art.In particular, in a vibration isolator provided with a gas chamber, the connecting portion between the attenuator and the rotating member is By interposing a radial or thrust bearing, the angular movement of the rotating member is absorbed without being transmitted to the cylindrical flexible membrane.
以下にこの発明を図面に基づいて説明する。The present invention will be explained below based on the drawings.
第2図はこの発明の一実施例を示す部分断面図であり、
図中第1図と同様の部分はそれと同一の番号で示す。FIG. 2 is a partial sectional view showing an embodiment of the present invention.
In the figure, parts similar to those in FIG. 1 are designated by the same numbers.
この例は、減衰器1の、通常は、回動部材としての車軸
側部材に連結されるシリンダ−1a端部に、ラジアルボ
ールベアリング11を設け、そしてこのラジアルボール
ベアリング11のアウターレースllaを受ける皿状部
材12に、車軸側部材を取り付けるアイ18を設けたも
のであり、他の部分の構成は、軸部8へのラジアルボー
ルベアリングの取り付けを省いたことを除き、第1図に
示すものとほぼ同様である。In this example, a radial ball bearing 11 is provided at the end of a cylinder 1a of a damper 1, which is normally connected to an axle side member as a rotating member, and an outer race lla of this radial ball bearing 11 is received. The dish-shaped member 12 is provided with an eye 18 for attaching the axle side member, and the configuration of the other parts is as shown in FIG. 1, except that the attachment of the radial ball bearing to the shaft portion 8 is omitted. It is almost the same as
このように構成した防振装置によれば、車高調整ならび
に低周波小振幅振動および大振幅の振動の吸収は従来技
術と同様にして行われる他、車軸側部材から皿状部材1
2に伝達される角運動は、ラジアルボールベアリング1
1によって確実に吸収され、筒状可撓膜7に、その捩れ
方向の力が伝達されることがないので、その可撓膜7の
耐久性が低下することはない。According to the vibration isolator configured in this way, vehicle height adjustment and absorption of low frequency, small amplitude vibrations and large amplitude vibrations are performed in the same manner as in the prior art.
The angular motion transmitted to radial ball bearing 1
1, and the force in the torsional direction is not transmitted to the cylindrical flexible membrane 7, so the durability of the flexible membrane 7 does not deteriorate.
なお、この例におけるラジアルボールベアリング11を
ラジアルローラベアリング、スラストベアリングなどと
することもでき、かかる場合にも筒状可撓膜7の耐久性
に関する問題は十分に解決されることになる。また、と
(にそのベアリングをスラストベアリングとした場合に
は、車軸側部材から減衰器lへ伝達される振動により有
利に対処することができる。Note that the radial ball bearing 11 in this example may be replaced by a radial roller bearing, a thrust bearing, or the like, and in such a case, the problem regarding the durability of the cylindrical flexible membrane 7 will be satisfactorily resolved. Furthermore, if the bearing is a thrust bearing, vibrations transmitted from the axle side member to the damper l can be advantageously dealt with.
第8図はこの発明の他の実施例を示す部分断面図である
。FIG. 8 is a partial sectional view showing another embodiment of the invention.
ここでは、筒部材2の硬質頂壁2aからその内側へ内筒
14を突出させてこの内筒14内で、それとピストンロ
ッドlbの端部とをゴムもしくはゴム状の弾性部材15
で連結することにより、ピストンロッド1bと筒部材2
との柔連結をもたらし、また、シリンダーICの端部に
設げたスラストボールベアリング16に、アイ13を設
けた皿状部材12を取り付ける。Here, an inner cylinder 14 is projected inward from the hard top wall 2a of the cylinder member 2, and within this inner cylinder 14, the end of the piston rod lb is connected to a rubber or rubber-like elastic member 15.
By connecting the piston rod 1b and the cylindrical member 2
A plate-like member 12 provided with an eye 13 is attached to a thrust ball bearing 16 provided at the end of the cylinder IC.
この例によれば、アイ18に取り付けられる車軸側部材
の角運動は、第2図に示す実施例と同様に、スラストボ
ールベアリング16により吸収されるので、筒状可撓膜
7に捩り変形が発生するおそれはない。According to this example, the angular movement of the axle side member attached to the eye 18 is absorbed by the thrust ball bearing 16, similar to the embodiment shown in FIG. There is no risk of this occurring.
加えてこの例では、ピストンロッド1bと筒部材2とを
柔連結していることから、テレスコープ型の減衰器1で
はほとんど減衰することができずニジリンダ−1aから
ピストンロッド1bへ直接的に伝達される高周波小振幅
振動を、筒部材2に対して十分に絶縁することができる
。すなわち、テレスコープ型の減衰器1は、そこへ封入
した液体の粘性抵抗、シリンダー1a、ピストンその他
の慣性抵抗などにより、たとえば自動車の砂利道走行時
におけるような高周波小振幅振動を有効に吸収すること
ができないところ、この例によれば、有効に吸収されず
にシリンダー1aからピストン・ロッド1bに伝達され
た振動は、弾性部材15で、ピストンロッド1bの筒部
材2に対する相対振動を許容することにより吸収される
ので、それが車体側へ伝達されて車両への乗り心地を損
ねることはない。In addition, in this example, since the piston rod 1b and the cylindrical member 2 are flexibly connected, the telescopic damper 1 can hardly attenuate the damping, and the damping force is directly transmitted from the cylinder 1a to the piston rod 1b. It is possible to sufficiently insulate the cylindrical member 2 from high-frequency, small-amplitude vibrations. That is, the telescope-type damper 1 effectively absorbs high-frequency, small-amplitude vibrations, such as those caused when a car drives on a gravel road, by using the viscous resistance of the liquid sealed therein, the inertial resistance of the cylinder 1a, the piston, and other components. However, according to this example, the vibrations transmitted from the cylinder 1a to the piston rod 1b without being effectively absorbed are caused by the elastic member 15 allowing the relative vibration of the piston rod 1b with respect to the cylindrical member 2. Since it is absorbed by the vehicle, it is not transmitted to the vehicle body and impairs the ride comfort of the vehicle.
第4図はこの発明のさらに他の実施例を示す部分断面図
である。FIG. 4 is a partial sectional view showing still another embodiment of the invention.
ここでは、シリンダー1aの下端に、第2図について述
べたと同様にしてラジアルボールベアリング11、皿状
部材12およびアイ18を配設する。そして筒部材2の
上端部に縮径部2bを設けるとともに、この縮径部2b
を、ピストンロッド1bの先端部が貫通するストッパー
17で他の部分から区画し、その縮径部2b内でピスト
ンロッド1bに設けたフランジ18に、断面形状がほぼ
ひし形をなすリング状もしくは周方向に途切れたゴムま
たはゴム状の弾性部材19を、縮径部2bに連結するこ
となく固着する。Here, a radial ball bearing 11, a dish-like member 12, and an eye 18 are arranged at the lower end of the cylinder 1a in the same manner as described with reference to FIG. A reduced diameter portion 2b is provided at the upper end of the cylindrical member 2, and this reduced diameter portion 2b
is separated from other parts by a stopper 17 through which the tip of the piston rod 1b passes, and a flange 18 provided on the piston rod 1b within the reduced diameter portion 2b is provided with a ring-shaped or circumferential cross-sectional shape that is approximately rhombic. The rubber or rubber-like elastic member 19 that has been cut off is fixed to the reduced diameter portion 2b without being connected to it.
この例によれば、車軸側部材の角運動は、第2゜8図の
実施例と同様に吸収され、また、高周波小振幅振動によ
るピストンロッド1bの筒部材2に対する相対振動は、
弾性部材19の、ピストンロッド軸線方向への変位なら
びに硬質頂壁2aおよびストッパー17との当接による
弾性変形により吸収される。なおこの例の弾性部材19
は、第8図の実施例の弾性部材15とは異なり、筒部材
2には連結されていないので、ピストンロッド1bの筒
部材2に対する相対振動に際し、弾性部材の変形に基づ
く変形反力の筒部材2への伝達量を、第8図の実施例よ
りも低減することができる。According to this example, the angular movement of the axle side member is absorbed in the same manner as in the embodiment shown in FIG.
This is absorbed by the displacement of the elastic member 19 in the axial direction of the piston rod and the elastic deformation caused by contact with the hard top wall 2a and the stopper 17. Note that the elastic member 19 in this example
Unlike the elastic member 15 of the embodiment shown in FIG. 8, it is not connected to the cylindrical member 2, so that when the piston rod 1b vibrates relative to the cylindrical member 2, the deformation reaction force due to the deformation of the elastic member is generated by the cylinder. The amount of transmission to the member 2 can be reduced compared to the embodiment shown in FIG.
以上この発明を図示例に基づいて説明したが、この発明
は他の型式の気体室、たとえば、筒部材の頂壁の一部ま
たは全部をゴムもしくはゴム状の弾性部材にて形成し、
その弾性部材にピストンロッドの先端部を連結した気体
室を具える防振装置にも適用することができる、
従って、この発明によれば、とくに、気体室を具える防
振装置において、減衰器と回動部材との連結部に、ラジ
アルもしくはスラストベアリングを介装することにより
、筒状可撓膜への角運動の・伝達を十分に防止できるの
で、筒状可撓膜の耐久性が、従来技術に比し著しく高ま
ることになる。Although the present invention has been described above based on the illustrated examples, the present invention is also applicable to other types of gas chambers, for example, in which part or all of the top wall of the cylindrical member is formed of rubber or a rubber-like elastic member,
The present invention can also be applied to a vibration isolator that includes a gas chamber in which the tip of a piston rod is connected to the elastic member. By interposing a radial or thrust bearing in the connection between the cylindrical flexible membrane and the rotating member, the transmission of angular motion to the cylindrical flexible membrane can be sufficiently prevented, thereby increasing the durability of the cylindrical flexible membrane. This is a significant increase compared to the conventional technology.
第1図は従来技術を示す部分断面図、
第2〜4図はそれぞれこの発明の実施例を示す部分断面
図である。
1・・・減衰器 1a・・・シリンダー1b
・・・ピストンロッド 2・・・筒部材2a・・・硬
質頂壁 2b・・・縮径部8・・・軸部
7・・・筒状可撓膜8・・・空気室
11・・・ラジアルボールベアリング
12・・・皿状部材 1B・・・アイ14・・
・内筒 15 、19・・・弾性部材16
・・・スラストボールベアリング
17・・・ストッパー。
第2図
9FIG. 1 is a partial sectional view showing a conventional technique, and FIGS. 2 to 4 are partial sectional views showing embodiments of the present invention. 1...Attenuator 1a...Cylinder 1b
...Piston rod 2...Cylinder member 2a...Hard top wall 2b...Reduced diameter part 8...Shaft part
7... Cylindrical flexible membrane 8... Air chamber 11... Radial ball bearing 12... Dish-shaped member 1B... Eye 14...
・Inner cylinder 15, 19...elastic member 16
...Thrust ball bearing 17...Stopper. Figure 2 9
Claims (1)
衰器と、この減衰器のピストンロッドを囲繞する頂壁付
きの筒部材と、一端部を減衰器のシリンダーに、また他
端部を筒部材にそれぞれ気密に連結した筒状可撓膜と、
前記筒部材、シリンダーおよび筒状可撓膜で形成される
気体室とを具える防振装置において、減衰器と前記回動
部材との連結部にベアリングを介装してなることを特徴
とする防振装置。L A telescope type attenuator whose one end is connected to the rotating member, a cylindrical member with a top wall surrounding the piston rod of this attenuator, one end of which is connected to the cylinder of the attenuator, and the other end of which is connected to the cylinder of the attenuator. a cylindrical flexible membrane airtightly connected to each cylindrical member;
A vibration isolator comprising the cylindrical member, a cylinder, and a gas chamber formed by the cylindrical flexible membrane, characterized in that a bearing is interposed in a connecting portion between the attenuator and the rotary member. Anti-vibration device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8403083A JPS59212551A (en) | 1983-05-16 | 1983-05-16 | Shock absorber |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8403083A JPS59212551A (en) | 1983-05-16 | 1983-05-16 | Shock absorber |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59212551A true JPS59212551A (en) | 1984-12-01 |
Family
ID=13819136
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8403083A Pending JPS59212551A (en) | 1983-05-16 | 1983-05-16 | Shock absorber |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59212551A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002070918A1 (en) * | 2001-03-03 | 2002-09-12 | Continental Ag | Gas spring damper unit |
KR100795553B1 (en) | 2006-02-14 | 2008-01-21 | (주)성진기계 | Pssenger suspension system |
US8517357B2 (en) | 2009-06-19 | 2013-08-27 | Firestone Industrial Products Company, Llc | Gas spring and damper assembly |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS584B2 (en) * | 1979-03-28 | 1983-01-05 | 日本電信電話株式会社 | Optical fiber cable extra length processing section |
-
1983
- 1983-05-16 JP JP8403083A patent/JPS59212551A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS584B2 (en) * | 1979-03-28 | 1983-01-05 | 日本電信電話株式会社 | Optical fiber cable extra length processing section |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002070918A1 (en) * | 2001-03-03 | 2002-09-12 | Continental Ag | Gas spring damper unit |
KR100795553B1 (en) | 2006-02-14 | 2008-01-21 | (주)성진기계 | Pssenger suspension system |
US8517357B2 (en) | 2009-06-19 | 2013-08-27 | Firestone Industrial Products Company, Llc | Gas spring and damper assembly |
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