JPS58221034A - Damping force adjusting device in hydraulic buffer - Google Patents
Damping force adjusting device in hydraulic bufferInfo
- Publication number
- JPS58221034A JPS58221034A JP10338782A JP10338782A JPS58221034A JP S58221034 A JPS58221034 A JP S58221034A JP 10338782 A JP10338782 A JP 10338782A JP 10338782 A JP10338782 A JP 10338782A JP S58221034 A JPS58221034 A JP S58221034A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic fluid
- damping force
- electromagnet
- oil
- shock absorber
- 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】
本発明は、ピストンの伸縮動作に伴って、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 can be arbitrarily adjusted 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
任意に調整する九めＫ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
ければならなかった。Conventionally, in this type of hydraulic shock absorber, the damping force can be arbitrarily adjusted by installing a damping valve and adjusting it from the outside, but this cannot be done without using a complicated mechanism and a large number of parts. did not become.
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、−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とに区画する一方ゼストン３と連結するピストンロ
ッド４の上端をロッドガイド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へと向って開く吸入弁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へと向って開く不還弁８を設け、
作動シリンダ１の伸長側末端のロッドガイド５には上部
室Ｂの油がロッドガイド５に取付けたブツシュ９とピス
トンロッド５との隔間１０ （制御部）より流出せしめ
て減衰力を作動させ、油溜室Ａの上部に導く油孔１１を
設ける。一方、との隔間１０と相対する外筒２の外周に
電磁石１２を取付けると共に油圧緩衝器の油中に磁性流
体を混合せしめたものである。FIG. 1 is a sectional view showing one embodiment of the damping force adjusting device of the present invention, in which hydraulic oil is circulated in one direction and at the same time resistance is applied to the flow to generate damping force. As shown in the figure, an operating cylinder 1 and an outer cylinder 2 surrounding it are fixed and the upper and lower ends are closed to form an oil reservoir chamber A between the operating cylinder 1 and the outer cylinder 2. Working cylinder 1
A piston 3 is slidably inserted into the interior to divide it into an upper chamber B and a lower chamber C. The upper end of a piston rod 4 connected to the piston 3 is connected to an oil seal 6 via a rod guide 5.
Make it protrude further upwards. Furthermore, at the compression side end of the working cylinder 1, there is a suction valve 7 that opens from the oil reservoir chamber A to the lower chamber C.
In addition, the piston 3 is provided with a non-return valve 8 that opens from the lower chamber C to the upper chamber B only during the compression stroke,
The oil in the upper chamber B flows out of the rod guide 5 at the extension side end of the operating cylinder 1 through the gap 10 (control section) between the bush 9 attached to the rod guide 5 and the piston rod 5 to operate a damping force. An oil hole 11 leading to the upper part of the oil reservoir chamber A is provided. On the other hand, an electromagnet 12 is attached to the outer periphery of the outer cylinder 2 facing the gap 10 between the two, and a magnetic fluid is mixed in the oil of the hydraulic shock absorber.
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。The electromagnet is connected to the outer cylinder 2 as shown at 12' in Fig. 2A.
There is no difference in function and effect even if it is installed inside the .
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弁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内へと流動さ
せると同時に、この上部室Ｂからピストンロッド４の進
入体積分に相当する量の作動油を隔間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１２の励磁コイルに流す電流を調整するととＫより
磁力が変化する。そして隔間ｌＯ内を通る磁性流体を直
接磁化さるから油の粘性が変化し、そのため減衰力を変
化させることができる。即ち励磁電流の大小によって減
衰力が調整できる。During the extension stroke of the piston 3, the oil sump chamber A is
While the hydraulic oil in the upper chamber B is sucked into the lower part C, the hydraulic oil in the upper chamber B is discharged to the oil reservoir chamber A through the interval 10 (control part) and the oil hole 11. At the same time, the hydraulic oil in the lower chamber C is made to flow into the upper chamber B through the non-return valve 8 of (control unit) -
The hydraulic oil is returned to the oil reservoir chamber A through the through hole 11, and in this way, the hydraulic oil is always circulated in one direction through the gap 10 during both the expansion and contraction strokes of the piston 3, thereby generating a damping force. At this time, when the current flowing through the excitation coil of the electromagnet 12 is adjusted, the magnetic force changes due to K. Since the magnetic fluid passing within the interval lO is directly magnetized, the viscosity of the oil changes, and therefore the damping force can be changed. That is, the damping force can be adjusted by changing the magnitude of the excitation current.
第２図は本発明の他の実施例を示す要部断面図で、上記
実施例では油圧緩衝器の池内に磁性材料を混合せしめた
ものを使用したが、本発明では磁性材料を部分的に使用
したものである。即ち、隔間（制御部）１０に空所１３
を設け、その空所１３に磁性流体を収納した可撓性膜体
１４をピストンロッド４に摺動自在に挿入したもので、
そのほかは第１図と同じである。FIG. 2 is a sectional view of the main part showing another embodiment of the present invention. In the above embodiment, a magnetic material was mixed in the reservoir of the hydraulic shock absorber, but in the present invention, the magnetic material is partially mixed. This is what I used. That is, there is a space 13 in the interval (control section) 10.
A flexible membrane body 14 containing a magnetic fluid is slidably inserted into the piston rod 4 in the cavity 13.
Other details are the same as in Figure 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
節すると可撓性膜体１４内の磁性流体は電流の大小によ
って磁化され、第３図に示すように、ピストンロッド４
側に突出するように引っ張られる。したがって、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。なお、本発明は第４図に示す
ようにピストンに４Ｍ！磁石１７′を設けることにより
適用できるし、また、テトムパルブでも実施が可能であ
る。When the current flowing through the excitation coil of the electromagnet 12 is adjusted in this way, 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 the side so that it sticks out. 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. In addition, as shown in FIG. 4, the present invention has a piston of 4M! This can be applied by providing a magnet 17', and can also be implemented with a tetom valve.
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
ってバラツキが発生するのを防止する等の効果がある。As described in detail above, according to the present invention, the damping force can be reliably adjusted with an extremely simple configuration, and it is also effective in preventing variations due to the size of the spacing.
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
、第２図は本発明の他の実施例を示す要部断面図、第２
図Ａは更に他の実施例を示す第２図と同様な図、第３図
は同じくその動作説明図、第４図は本発明をピストンに
適用した例を示す図である。
１・・・作動シリンダ、２・・・外筒、３・・・ピスト
ン、４・・・ピストンロッド、５・・・ロッドガイド、
６・・・オイルシール、７・・・吸入弁、８・・・不還
弁、９・・・ブツシュ、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特許出願人 株式
会社 昭 和 製 作 所第２図
第３図
第 ２図Ａ
第４図FIG. 1 is a cross-sectional view showing one embodiment of the damping force adjusting device of the present invention, FIG. 2 is a cross-sectional view of main parts showing another embodiment of the present invention, and FIG.
FIG. A is a diagram similar to FIG. 2 showing another embodiment, FIG. 3 is an explanatory diagram of its operation, and FIG. 4 is a diagram showing an example in which the present invention is applied to a piston. DESCRIPTION OF SYMBOLS 1... Operating cylinder, 2... Outer cylinder, 3... Piston, 4... Piston rod, 5... Rod guide,
6... Oil seal, 7... Suction valve, 8... Non-return valve, 9... Bush, 10... Interval, 11... Oil hole, 12.12'... Electromagnet , 13... Blank space, 14
... Flexible membrane containing magnetic fluid Patent applicant Showa Seisakusho Co., Ltd. Figure 2 Figure 3 Figure 2 A Figure 4
Claims (2)
性流体が制御部を通過する部分の外周に電磁石を取付け
、その励磁コイルに加える電流の大小によって通過中の
磁性流体の粘性を変え、磁性流体の流速を変えるととギ
特徴とする油圧緩衝器における減衰力調整装置。(1) A magnetic fluid is mixed into the oil flow of a hydraulic shock absorber, an electromagnet is attached to the outer periphery of the part where the magnetic fluid passes through the control section, and the viscosity of the magnetic fluid passing through is controlled by the magnitude of the current applied to the excitation coil. A damping force adjustment device for a hydraulic shock absorber, which is characterized by changing the flow velocity of magnetic fluid.
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る電流の
大小によって磁性流体の粘性を変え、油の流速を変える
ととを特徴とする油圧緩衝器における減衰力調整装置。(2) 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 membrane body that houses the magnetic fluid, and an electromagnet is attached to the outer periphery of the space, and the current applied to the excitation coil is A damping force adjustment device for a hydraulic shock absorber, characterized by changing the viscosity of magnetic fluid depending on its size and changing the flow speed 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 true JPS58221034A (en) | 1983-12-22 |
| JPS6244136B2 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) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5014829A (en) * | 1989-04-18 | 1991-05-14 | Hare Sr Nicholas S | Electro-rheological shock absorber |
| US5103779A (en) * | 1989-04-18 | 1992-04-14 | Hare Sr Nicholas S | Electro-rheological valve control mechanism |
| US5158109A (en) * | 1989-04-18 | 1992-10-27 | Hare Sr Nicholas S | Electro-rheological valve |
| US5277281A (en) * | 1992-06-18 | 1994-01-11 | Lord Corporation | Magnetorheological fluid dampers |
| EP0644987A1 (en) * | 1992-06-18 | 1995-03-29 | Lord Corporation | Magnetorheological fluid devices |
| US6019201A (en) * | 1996-07-30 | 2000-02-01 | Board Of Regents Of The University And Community College System Of Nevada | 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 |
| WO2017047718A1 (en) * | 2015-09-15 | 2017-03-23 | 本田技研工業株式会社 | 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 |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5014829A (en) * | 1989-04-18 | 1991-05-14 | Hare Sr Nicholas S | Electro-rheological shock absorber |
| US5103779A (en) * | 1989-04-18 | 1992-04-14 | Hare Sr Nicholas S | Electro-rheological valve control mechanism |
| US5158109A (en) * | 1989-04-18 | 1992-10-27 | Hare Sr Nicholas S | Electro-rheological valve |
| EP1016805A3 (en) * | 1992-06-18 | 2000-11-02 | Lord Corporation | Magnetorheological fluid devices |
| EP0644987A1 (en) * | 1992-06-18 | 1995-03-29 | Lord Corporation | Magnetorheological fluid devices |
| EP0644987A4 (en) * | 1992-06-18 | 1997-12-17 | Lord Corp | Magnetorheological fluid devices. |
| EP1016805A2 (en) * | 1992-06-18 | 2000-07-05 | Lord Corporation | Magnetorheological fluid devices |
| US5277281A (en) * | 1992-06-18 | 1994-01-11 | Lord Corporation | Magnetorheological fluid dampers |
| US6019201A (en) * | 1996-07-30 | 2000-02-01 | Board Of Regents Of The University And Community College System Of Nevada | 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 |
| WO2017047718A1 (en) * | 2015-09-15 | 2017-03-23 | 本田技研工業株式会社 | Bearing member, and vibration damping device using same |
| CN108026969A (en) * | 2015-09-15 | 2018-05-11 | 本田技研工业株式会社 | Bearing components and use its arrangement for damping oscillations |
| JPWO2017047718A1 (en) * | 2015-09-15 | 2018-05-24 | 本田技研工業株式会社 | Bearing member and vibration damping device using the same |
| US10634208B2 (en) | 2015-09-15 | 2020-04-28 | Honda Motors Co., Ltd. | Bearing member, and vibration damping device using same |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6244136B2 (en) | 1987-09-18 |
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