JPS599331A - Shock absorber - Google Patents
Shock absorberInfo
- Publication number
- JPS599331A JPS599331A JP11926982A JP11926982A JPS599331A JP S599331 A JPS599331 A JP S599331A JP 11926982 A JP11926982 A JP 11926982A JP 11926982 A JP11926982 A JP 11926982A JP S599331 A JPS599331 A JP S599331A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic fluid
- cylinder
- viscosity
- damping force
- excitation coil
- 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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/535—Magnetorheological [MR] fluid dampers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、極めて簡易な手段で減衰力を自動調整する
緩衝装置に関するものである、
振動や衝撃をピストンの作動に変え内部油の流動抵抗で
減衰を行なう緩衝装置として、オイルダンパがある。一
般的なオイルダンパけ、油を封入したシリンダ内にピス
トンを摺動させ、ピストンに設けた油路に油が通過する
ときに発生する減衰力で振動や衝撃を吸収するものであ
る。しかし従来この種装置にあっては、油温が上昇する
ことにより油の粘性が低下し、それに伴ない減衰力が下
がり安定した減衰力を発生し得ないげがりが緩衝能力が
不十分となる場合もある。[Detailed Description of the Invention] The present invention relates to a shock absorber that automatically adjusts damping force using extremely simple means.The present invention relates to a shock absorber that automatically adjusts damping force using extremely simple means. , there is an oil damper. A typical oil damper is one in which a piston slides inside a cylinder filled with oil, and the damping force generated when the oil passes through an oil passage provided in the piston absorbs vibrations and shocks. However, in conventional devices of this type, as the oil temperature rises, the viscosity of the oil decreases, and the damping force decreases accordingly, making it impossible to generate a stable damping force, resulting in insufficient buffering capacity. In some cases.
仁の発明は、これらの欠点を解決する緩衝装置を提供す
るもので、その特徴とするところは、緩衝媒体に磁力に
より、粘性が変化する磁性流体を用い、この磁性流体の
粘性を電気的に変化させて減衰力を自動調整し、温度変
化があっても安定した減衰力を発生ｏＪ能となした点に
ある。Jin's invention provides a buffer device that solves these drawbacks, and its characteristics are that the buffer medium is a magnetic fluid whose viscosity changes due to magnetic force, and the viscosity of the magnetic fluid is electrically controlled. The damping force is automatically adjusted by changing the temperature, and a stable damping force can be generated even when the temperature changes.
以下、この発明の一実施態様を図面に基づいて説明する
。Hereinafter, one embodiment of the present invention will be described based on the drawings.
図面は、極く一般的なオイルダンパに適用した例を示す
もので、ｉｌ＋は磁性流体が個人さ、ｌ′したシリンダ
ー内中２）はピストン、（３１け中空のピストンロッド
で、ピストン（２）およびピストンロッド（３１にはそ
れぞれ油路（２−１）、油孔（３−１）が設けられてい
巳っ１４）ば ゛１ン／−ｆ１１の一端に植設した固定
ロッドで、核＝・−゛ヒ中空のピスト／ロッド（３）の
ケラ］の一〇径より小径であって、該ピストンロッド開
口部にτ”フイス（５）が形成されるようにピストンロ
ッド（３１内に挿通されている。この固定ロッド（４）
の付根部には励磁コイル（６）を巻着し、この励εコイ
ルに通電することによりシリンダー（１）、ピストン（
２）および固定ロッド（４）に磁気回路（７）が形成さ
ｆｌ、励磁コイル（６）のＡ電量（磁界）によってオリ
フィス（５）を流れる磁性流体の粘性を変化させられる
ようになっている。励磁コイル（６）の通電量を変化さ
せる方法としては、励磁コイル（６）と電源の回路の途
中に温度上昇により抵抗値の下がる素子、例えばサーミ
スタ（８）を旧刊に接続することにより、励磁コイル（
６）の４重量（磁界）を調整することができる。励磁コ
イル（６）の通電量を調整することによりオリフィス（
５）を流れる磁性流体の粘性を変化させることができる
。The drawing shows an example of application to a very general oil damper, where il+ is a magnetic fluid, l' is a piston (2) is a hollow piston rod, and a piston (2) is a hollow piston rod. ) and piston rod (31) are provided with an oil passage (2-1) and an oil hole (3-1), respectively. =・−゛The diameter of the hollow piston/rod (3) is smaller than 10 mm, and the piston rod (31 is inserted in such a way that a τ” ring (5) is formed at the opening of the piston rod. This fixing rod (4)
An excitation coil (6) is wound around the base of the cylinder (1) and the piston (
2) and the fixed rod (4) are formed with a magnetic circuit (7), so that the viscosity of the magnetic fluid flowing through the orifice (5) can be changed by the A current (magnetic field) of the excitation coil (6). . A method of changing the amount of current flowing through the excitation coil (6) is to connect an element whose resistance value decreases with temperature rise, such as a thermistor (8), in the middle of the circuit between the excitation coil (6) and the power supply. Excitation coil (
6) 4 Weight (magnetic field) can be adjusted. The orifice (
5) The viscosity of the magnetic fluid flowing through the magnetic fluid can be changed.
上記緩衝装置において、ピストンロッド（３１が押圧さ
れてピストン（２）が内方へ移動した場合、すなわち圧
縮時は油室（Ａ）内の磁性流体の一部がピストン（２）
の油路（２−１）を通り油室（Ｂ）内に入るとともに、
他の磁性流体がオリフィス（５）を逼りピストンロッド
（３）内室を介して油室（Ｂ）に流入する。伸張時は磁
性流体が圧縮時と逆の方向に流れて減衰力が生じる。In the above shock absorber, when the piston rod (31) is pressed and the piston (2) moves inward, that is, during compression, a part of the magnetic fluid in the oil chamber (A) is transferred to the piston (2).
As well as entering the oil chamber (B) through the oil passage (2-1),
Another magnetic fluid flows through the orifice (5) and into the oil chamber (B) via the inner chamber of the piston rod (3). During expansion, the magnetic fluid flows in the opposite direction to that during compression, creating a damping force.
今、励磁コイル（６）に通電すると、シリンダー（１）
、ピストン（２）および固定ロッド（４）に磁気回路（
力が形成され、オリフィス（５）を通過する磁性流体の
粘性が変化する。この粘性の変化によりオリフィス１５
）を通過する該磁性流体の流動抵抗が変化するため、減
衰力が変化する。磁性流体の粘性は、励磁コイル（６）
に通電する電流の大きさによって任意に変化させること
ができる。すなわち、励磁コイル（６）に通電する電流
が大きい場合は磁性流体の粘性は上昇し、励磁電流が小
さい場合は磁性流体の粘性は低下する。従って、励磁コ
イル（６）に大きな電流を流せば、磁性流体の粘性が増
しオリフィス（５）を通過する磁性流体の流動抵抗が増
大するので大きい減衰力を得ることができ、逆に励磁コ
イル（６）への１山電量を減じると、磁性流体の粘性が
小さくなりオリフィス（５）を通過する磁性流体の流動
抵抗が沖少するので減衰力は小さくなる８この減衰力の
胛整は励磁コイル（６）と電源の回路の途中に入れたサ
ーｉスタにより行なうことができる、すなわち井−ミス
タは油温を検出し、油温が上界することによりその抵抗
を下げるように機能するものである。Now, when the excitation coil (6) is energized, the cylinder (1)
, a magnetic circuit (
A force is created which changes the viscosity of the magnetic fluid passing through the orifice (5). This change in viscosity causes orifice 15
), the damping force changes as the flow resistance of the magnetic fluid changes. The viscosity of the magnetic fluid is determined by the excitation coil (6)
It can be arbitrarily changed depending on the magnitude of the current applied to. That is, when the current flowing through the exciting coil (6) is large, the viscosity of the magnetic fluid increases, and when the exciting current is small, the viscosity of the magnetic fluid decreases. Therefore, if a large current is passed through the excitation coil (6), the viscosity of the magnetic fluid increases and the flow resistance of the magnetic fluid passing through the orifice (5) increases, so a large damping force can be obtained, and conversely, the excitation coil ( 6), the viscosity of the magnetic fluid becomes smaller and the flow resistance of the magnetic fluid passing through the orifice (5) decreases, resulting in a smaller damping force.8 Adjustment of this damping force is achieved by the excitation coil. (6) This can be done by a thermistor inserted in the middle of the power supply circuit.In other words, the I-mistor detects the oil temperature and functions to lower the resistance when the oil temperature rises. be.
この上うＫ、この発明はシリンダー内に設けた励磁コイ
ルへの通電量を変化させるだけで減衰力を自動調整でき
るので、シリンダ内油温が１＝Ｊ１−しても安定した減
衰力を発生することができ、従って緩衝能力の優れた緩
衝装置を提供するものであFurthermore, this invention can automatically adjust the damping force by simply changing the amount of current applied to the excitation coil installed in the cylinder, so it generates a stable damping force even if the oil temperature in the cylinder is 1=J1-. Therefore, it provides a shock absorbing device with excellent shock absorbing capacity.
図面はこの発明の一実施態様を示す要部破断正面図であ
る。
１・・・シリンダー、２・・・ピストン、２−１・・・
油路、３・・・中空のピストンロッド、３−１・・・油
孔、４・・・固定ロッド、５・・・オリフィス、６・・
・励磁コイル、７・・・磁気回路、Ａ、Ｂ・・・油室The drawing is a partially cutaway front view showing an embodiment of the present invention. 1...Cylinder, 2...Piston, 2-1...
Oil passage, 3... Hollow piston rod, 3-1... Oil hole, 4... Fixed rod, 5... Orifice, 6...
・Exciting coil, 7...Magnetic circuit, A, B...Oil chamber
Claims (1)
通する中空のピストンロンド、およびシリンダー内を摺
動する油路付きピストンからなり、シリンダーの一端に
突設してその付根部に励磁コイルを巻着ｌまた固定ロン
ドを中空ピストンロッド内に挿通し、該固定ロッドと中
空ピストンロッド間にオリフィスを設け、前記励磁コイ
ルに通電することによってシリンダー、ピストンおよび
固守ロンドに磁気回路が形成されるように構成し、温度
上昇により抵抗値の下がる素子を前記励磁コイルに１暇
列に接続し励磁コイルへの通電量が温度変化に追従ｌ−
て変化し前記オリフィスを通過する磁性流体の粘性を変
化させることにより減衰力を自動調整することを特徴と
した緩衝装置。It consists of a cylinder filled with magnetic fluid, a hollow piston rod through which magnetic fluid flows, and a piston with an oil passage that slides inside the cylinder.It is protruded from one end of the cylinder and has an excitation coil wound around its base. A fixed iron is inserted into the hollow piston rod, an orifice is provided between the fixed rod and the hollow piston rod, and a magnetic circuit is formed in the cylinder, piston, and fixed iron by energizing the excitation coil. Elements whose resistance value decreases as the temperature rises are connected in one line to the excitation coil so that the amount of current to the excitation coil follows the temperature change.
A damping device characterized in that the damping force is automatically adjusted by changing the viscosity of the magnetic fluid passing through the orifice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11926982A JPS599331A (en) | 1982-07-09 | 1982-07-09 | Shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11926982A JPS599331A (en) | 1982-07-09 | 1982-07-09 | Shock absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS599331A true JPS599331A (en) | 1984-01-18 |
| JPH0243059B2 JPH0243059B2 (en) | 1990-09-27 |
Family
ID=14757169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11926982A Granted JPS599331A (en) | 1982-07-09 | 1982-07-09 | Shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS599331A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6446061A (en) * | 1987-06-01 | 1989-02-20 | Kyoko Mizoguchi | Hydraulic transmission |
| JPH06189817A (en) * | 1993-09-10 | 1994-07-12 | Morito Kk | Handgrip piece forming tape |
| WO1998000653A3 (en) * | 1996-07-02 | 1998-02-12 | Lord Corp | Controllable vibration apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102623846B1 (en) * | 2019-02-12 | 2024-01-11 | 에이치엘만도 주식회사 | Apparatus for controlling damper for vehicle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57173631A (en) * | 1981-04-20 | 1982-10-26 | Kayaba Ind Co Ltd | Hydraulic buffer |
-
1982
- 1982-07-09 JP JP11926982A patent/JPS599331A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57173631A (en) * | 1981-04-20 | 1982-10-26 | Kayaba Ind Co Ltd | Hydraulic buffer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6446061A (en) * | 1987-06-01 | 1989-02-20 | Kyoko Mizoguchi | Hydraulic transmission |
| JPH06189817A (en) * | 1993-09-10 | 1994-07-12 | Morito Kk | Handgrip piece forming tape |
| WO1998000653A3 (en) * | 1996-07-02 | 1998-02-12 | Lord Corp | Controllable vibration apparatus |
| US5878851A (en) * | 1996-07-02 | 1999-03-09 | Lord Corporation | Controllable vibration apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0243059B2 (en) | 1990-09-27 |
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