JPS6244136B2 - - Google Patents
Info
- Publication number
- JPS6244136B2 JPS6244136B2 JP57103387A JP10338782A JPS6244136B2 JP S6244136 B2 JPS6244136 B2 JP S6244136B2 JP 57103387 A JP57103387 A JP 57103387A JP 10338782 A JP10338782 A JP 10338782A JP S6244136 B2 JPS6244136 B2 JP S6244136B2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- damping force
- chamber
- shock absorber
- piston
- 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
- 238000013016 damping Methods 0.000 claims description 13
- 239000006096 absorbing agent Substances 0.000 claims description 6
- 230000035939 shock Effects 0.000 claims description 6
- 239000011553 magnetic fluid Substances 0.000 claims description 5
- 230000005284 excitation Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 14
- 239000010720 hydraulic oil Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 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
- 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
Description
【発明の詳細な説明】
本発明は、ピストンの伸縮動作に伴つて、その
流速に抵抗を与えて減衰力を発生させる油圧緩衝
器において、減衰力の大きさを外部から任意に調
整し得る減衰力調整装置を備えた油圧緩衝器に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a hydraulic shock absorber that generates a damping force by applying resistance to the flow velocity as the piston expands and contracts, and the damping force is capable of adjusting the magnitude of the damping force from the outside. The present invention relates to a hydraulic shock absorber with a force adjustment device.
従来、この種の油圧緩衝器において、減衰力の
大きさを任意に調整するためには減衰弁を設けて
外部から調節するようにしているが複雑な機構と
多数の部品を使用しなければならなかつた。 Conventionally, in this type of hydraulic shock absorber, in order to arbitrarily adjust the magnitude of the damping force, a damping valve is provided and the adjustment is done from the outside, but this requires the use of a complex mechanism and a large number of parts. Nakatsuta.
本発明は、このような従来の問題点を基本的に
変えて簡単で、しかも確実に作用する機構を提供
せんとするものである。以下本発明の一実施例を
図面により詳細に説明する。 The present invention aims to fundamentally solve these conventional problems and provide a mechanism that is simple and works reliably. An embodiment of the present invention will be described in detail below with reference to the drawings.
第１図は本発明減衰力調整装置の一実施例を示
す断面図で、一例として作動油を一方向に循環さ
せつつ、同時にその流動に抵抗を与えて減衰力を
発生させるものである。図に示すように、作動シ
リンダ１とこれを取囲む外筒２を固定すると共に
上下端を閉塞して作動シリンダ１と外筒２との間
に油溜室Ａを形成させる。作動シリンダ１内には
ピストン３を摺動自在に挿入して上部室Ｂと下部
室Ｃとに区画する一方ピストン３と連結するピス
トンロツド４の上端をロツドガイド５を介してオ
イルシール６より上方に突出せしめる。更に作動
シリンダ１の圧縮側末端には油溜室Ａから下部室
Ｃへと向つて開く吸入弁７を、またピストン３に
は、その圧縮行程時においてのみ下部室Ｃから上
部室Ｂへと向つて開く不還弁８を設け、作動シリ
ンダ１の伸長側末端のロツドガイド５には上部室
Ｂの油がロツドガイド５に取付けたブツシユ９と
ピストンロツド５との隔間１０（制御部）に設け
た空所１３に収容された磁性流体を収納した膜体
１４により減衰力を発生せしめ、且つ油溜室Ａの
上部に導く油孔１１を設ける。なお、電磁石は、
第２図Ａに１２′と示すように外筒２の内側に設
けても作用効果の上で差異はない。 FIG. 1 is a cross-sectional view showing one embodiment of the damping force adjusting device of the present invention, which circulates hydraulic oil in one direction and simultaneously provides resistance to the flow to generate damping force. As shown in the figure, the working cylinder 1 and the outer cylinder 2 surrounding it are fixed and the upper and lower ends are closed to form an oil reservoir chamber A between the working cylinder 1 and the outer cylinder 2. A piston 3 is slidably inserted into the working cylinder 1 and divided into an upper chamber B and a lower chamber C, while the upper end of a piston rod 4 connected to the piston 3 projects upwardly from an oil seal 6 via a rod guide 5. urge Furthermore, a suction valve 7 that opens from the oil reservoir chamber A to the lower chamber C is provided at the compression side end of the working cylinder 1, and a suction valve 7 that opens from the oil sump chamber A to the lower chamber C, and a suction valve 7 that opens from the lower chamber C to the upper chamber B only during the compression stroke. A non-return valve 8 that opens when the cylinder 1 is extended is provided, and the oil in the upper chamber B is supplied to the rod guide 5 at the end of the extension side of the operating cylinder 1. A damping force is generated by a membrane body 14 containing a magnetic fluid housed in a position 13, and an oil hole 11 is provided which leads to the upper part of the oil reservoir chamber A. In addition, the electromagnet is
Even if it is provided inside the outer cylinder 2 as shown at 12' in FIG. 2A, there is no difference in terms of operation and effect.
次に、その動作を説明する。 Next, its operation will be explained.
ピストン３の伸長行程時には吸入孔７を介して
油溜室Ａ内の作動油を下部Ｃに吸込みつつ上部室
Ｂ内の作動油を隔間１０（制御部）−油孔１１を
介して油溜室Ａに排出し、又逆に圧縮行程時にお
いてはピストン３の不還弁８を介して下部室Ｃ内
の作動油を上部室Ｂ内へと両動させると同時に、
この上部室Ｂからピストンロツド４の進入体積分
に相当する量の作動油隔間１０（制御部）−通孔
１１を介して油溜室Ａに還流し、このようにして
ピストン３の伸縮両行程時に常に隔間１０を介し
て作動油を一方向に循環させて減衰力を発生させ
る。この時、電磁石１の励磁コイルに流す電流を
調整することにより磁力が変化する。 During the extension stroke of the piston 3, the hydraulic oil in the oil sump chamber A is sucked into the lower part C through the suction hole 7, while the hydraulic oil in the upper chamber B is drawn into the oil sump through the interval 10 (control unit) and the oil hole 11. Discharged into the chamber A, and conversely, during the compression stroke, the hydraulic oil in the lower chamber C is moved into the upper chamber B via the non-return valve 8 of the piston 3.
An amount of hydraulic oil corresponding to the entering volume of the piston rod 4 is returned from the upper chamber B to the oil reservoir chamber A through the gap 10 (control section) and the through hole 11, and in this way, the piston 3 moves both in its expansion and contraction strokes. Hydraulic oil is always circulated in one direction through the spacing 10 to generate a damping force. At this time, the magnetic force is changed by adjusting the current flowing through the excitation coil of the electromagnet 1.
このようにして電磁石１２の励磁コイルに流す
電流を調整すると可撓性膜体１４内の磁性流体は
電流の大小によつて磁化され、第３図に示すよう
に、ピストンロツド４側に突出するように引つ張
られる。したがつて、その隔間１０を流れる油の
量が変わるので減衰力が調整できる。その上、隔
間１０の大小によるバラツキに関係なしに調整が
できる利点がある。 When the current flowing through the excitation coil of the electromagnet 12 is adjusted in this manner, the magnetic fluid within the flexible membrane 14 is magnetized depending on the magnitude of the current, and as shown in FIG. It is pulled to. Therefore, since the amount of oil flowing through the gap 10 changes, the damping force can be adjusted. Moreover, there is an advantage that adjustment can be made regardless of variations in the size of the interval 10.
以上詳細に説明したように、本発明によれば極
めて簡単な構成で確実に減衰力を調整できる外、
隔間の大小によつてバラツキが発生するのを防止
する等の効果がある。 As explained in detail above, according to the present invention, in addition to being able to reliably adjust the damping force with an extremely simple configuration,
This has the effect of preventing variations due to the size of the intervals.
第１図は本発明の減衰力調整装置を具備する油
圧緩衝器の断面図、第２図は本発明の一実施例を
示す要部断面図、第２図Ａは他の実施例を示す第
２図と同様の図、第３図は同じくその動作説明図
である。
１……作動シリンダ、２……外筒、３……ピス
トン、４……ピストンロツド、５……ロツドガイ
ド、６……オイルシール、７……吸入弁、８……
不還弁、９……ブツシユ、１０……隔間、１１…
…油孔、１２，１２′……電磁石、１３……空
所、１４……磁性流体を収納した可撓性膜体。
FIG. 1 is a sectional view of a hydraulic shock absorber equipped with a damping force adjustment device of the present invention, FIG. 2 is a sectional view of essential parts showing one embodiment of the invention, and FIG. 2A is a sectional view showing another embodiment. Figures similar to Figure 2 and Figure 3 are also explanatory diagrams of the operation. DESCRIPTION OF SYMBOLS 1... Working cylinder, 2... Outer cylinder, 3... Piston, 4... Piston rod, 5... Rod guide, 6... Oil seal, 7... Intake valve, 8...
Non-return valve, 9...butsuyu, 10...interval, 11...
...oil hole, 12, 12'...electromagnet, 13...vacuum, 14...flexible membrane containing magnetic fluid.
Claims (1)
空所を設けて磁性流体を収納する可撓性膜体を収
容し、その外周に電磁石を取付け、その励磁コイ
ルに加えられる電流の大小によつて磁性流体の粘
性を変え、油の流速を変えることを特徴とする油
圧緩衝器における減衰力調整装置。1. A space is provided in the part where the oil flow of the hydraulic shock absorber passes through the control part to house a flexible film body that houses the magnetic fluid, and an electromagnet is attached to the outer periphery of the space, and the magnitude of the current applied to the excitation coil is adjusted. A damping force adjustment device for a hydraulic shock absorber, which is characterized by changing the viscosity of magnetic fluid and changing the flow velocity of oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10338782A JPS58221034A (en) | 1982-06-16 | 1982-06-16 | Damping force adjusting device in hydraulic buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10338782A JPS58221034A (en) | 1982-06-16 | 1982-06-16 | Damping force adjusting device in hydraulic buffer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58221034A JPS58221034A (en) | 1983-12-22 |
| JPS6244136B2 true JPS6244136B2 (en) | 1987-09-18 |
Family
ID=14352662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10338782A Granted JPS58221034A (en) | 1982-06-16 | 1982-06-16 | Damping force adjusting device in hydraulic buffer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58221034A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5158109A (en) * | 1989-04-18 | 1992-10-27 | Hare Sr Nicholas S | Electro-rheological valve |
| US5103779A (en) * | 1989-04-18 | 1992-04-14 | Hare Sr Nicholas S | Electro-rheological valve control mechanism |
| US5014829A (en) * | 1989-04-18 | 1991-05-14 | Hare Sr Nicholas S | Electro-rheological shock absorber |
| DE69329851T2 (en) * | 1992-06-18 | 2001-05-23 | Lord Corp | MAGNETORHEOLOGICAL LIQUID DEVICES |
| US5277281A (en) * | 1992-06-18 | 1994-01-11 | Lord Corporation | Magnetorheological fluid dampers |
| AU3818697A (en) * | 1996-07-30 | 1998-02-20 | Board Of Regents Of The University And Community College System Of Nevada, The | Magneto-rheological fluid damper |
| US6471018B1 (en) | 1998-11-20 | 2002-10-29 | Board Of Regents Of The University And Community College System On Behalf Of The University Of Nevada-Reno, The University Of Reno | Magneto-rheological fluid device |
| US6655511B1 (en) | 2002-10-08 | 2003-12-02 | Delphi Technologies, Inc. | Magnetorheological piston having a core |
| CN108026969B (en) * | 2015-09-15 | 2020-09-01 | 本田技研工业株式会社 | Bearing member and vibration damping device using same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5652602A (en) * | 1979-10-01 | 1981-05-11 | Matsushita Electric Ind Co Ltd | Controlling apparatus for viscous-load |
-
1982
- 1982-06-16 JP JP10338782A patent/JPS58221034A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5652602A (en) * | 1979-10-01 | 1981-05-11 | Matsushita Electric Ind Co Ltd | Controlling apparatus for viscous-load |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58221034A (en) | 1983-12-22 |
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