JPH05248492A - Vibration isolating device - Google Patents
Vibration isolating deviceInfo
- Publication number
- JPH05248492A JPH05248492A JP8592792A JP8592792A JPH05248492A JP H05248492 A JPH05248492 A JP H05248492A JP 8592792 A JP8592792 A JP 8592792A JP 8592792 A JP8592792 A JP 8592792A JP H05248492 A JPH05248492 A JP H05248492A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- hole
- magnets
- pair
- cap
- 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
Landscapes
- Vibration Prevention Devices (AREA)
- Fluid-Damping Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、磁石の磁気反撥力と空
気バネを利用した防振装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration device utilizing the magnetic repulsive force of a magnet and an air spring.
【０００２】[0002]
【従来の技術】本願出願人は、先に図２（実公昭５７−
１９８６６号公報参照）に示すようにケ−ス内に設置し
た磁気反発装置に使用する１組の磁石の反発力を、更に
強くするために、前記１組の磁石の非反発面に、磁性体
のキャップをそれぞれ被装し、磁石の反発面積を増加さ
せると共に、前記１組の磁石の対向面に、前記磁性体の
キャップを被装することによって前記１組の磁石の対向
面とは異なる磁極を形成させ、該磁極によって生ずる磁
力を前記１組の磁石の反発力に加え、磁気反発装置の反
発力を強化するために、前記１組の磁石と前記磁性体の
キャップとを粘着して一体とした磁石を考案した。2. Description of the Related Art The applicant of the present application has previously shown in FIG.
In order to further strengthen the repulsive force of the pair of magnets used in the magnetic repulsion device installed in the case as shown in Japanese Patent Laid-Open No. 19866), a magnetic material is attached to the non-repulsive surface of the pair of magnets. Caps to increase the repulsive area of the magnets, and by covering the facing surfaces of the pair of magnets with the caps of the magnetic material, magnetic poles different from the facing surfaces of the pair of magnets. And the magnetic force generated by the magnetic poles is applied to the repulsive force of the one set of magnets to strengthen the repulsive force of the magnetic repulsion device, the one set of magnets and the cap of the magnetic body are adhered and integrated. I devised a magnet.
【０００３】[0003]
【発明が解決しようとする課題】ところで上記従来技術
に於ては、１対の磁石の対向面外端部の反撥力に比較し
て中央部に来るに従って反撥力が弱くなり、全体として
反撥力に欠けるという問題点があった。By the way, in the above-mentioned prior art, the repulsive force becomes weaker toward the central portion as compared with the repulsive force at the outer end portions of the facing surfaces of the pair of magnets, and the repulsive force as a whole. There was a problem that it lacked.
【０００４】[0004]
【課題を解決するための手段】本発明は上記問題点を解
決することを目的とし、１対の磁石の同極面を対向配設
し、各磁石の非反撥面に磁性体キャップを被嵌固定し、
その外端面を前記１対の磁石の対向面と略同一面に位置
させ、該磁性体キャップの端面を反対極となした磁気反
撥装置に於て、上下磁石の外周を弾性膜で太鼓状に巻回
し、１対の磁石の中央部対向位置に貫通孔を形成し、下
部貫通孔内に棒体下部を嵌合し、該棒体上部を上部貫通
孔内に挿通し、その上端を上部磁性体キャップ下面と所
定の間隔を存して位置させ、上下部磁性体キャップの中
央部より外部へ通ずる通孔を形成し、外部可撓パイプに
より連通したことを特徴とする。SUMMARY OF THE INVENTION In order to solve the above problems, the present invention has a pair of magnets having the same polar surfaces opposed to each other and a non-repulsive surface of each magnet fitted with a magnetic cap. Fixed,
In a magnetic repulsion device in which the outer end surface is located substantially on the same surface as the facing surface of the pair of magnets, and the end surfaces of the magnetic caps are opposite poles, the outer circumferences of the upper and lower magnets are drum-shaped with elastic films. A pair of magnets are wound, a through hole is formed at a position facing the center of a pair of magnets, the lower part of the rod is fitted in the lower through hole, the upper part of the rod is inserted into the upper through hole, and the upper end of the pair is magnetized. It is characterized in that it is located at a predetermined distance from the lower surface of the body cap, has a through hole communicating from the central portion of the upper and lower magnetic body caps to the outside, and is communicated by an external flexible pipe.
【０００５】[0005]
【作用】載置台上に精密機器を載置し、上部磁性体キャ
ップの通孔と中央部の棒体上面との間に間隔がある小負
荷の状態では磁気反撥力による磁気浮上作用のみにより
防振を行い、更に大負荷が作用して上部磁性体キャップ
の通孔が棒体上面により閉じられると磁気反撥力に加え
て空気バネが作用し、より強力な反撥力を生じ防振が行
われる。[Operation] A precision instrument is placed on the placing table, and in the case of a small load where there is a gap between the through hole of the upper magnetic cap and the upper surface of the bar in the central part, it is prevented only by the magnetic levitation action by the magnetic repulsion force. When a large load is applied and the through hole of the upper magnetic body cap is closed by the top surface of the rod body, the air spring acts in addition to the magnetic repulsive force to generate stronger repulsive force and to prevent vibration. ..
【０００６】[0006]
【実施例】１対の磁石１１，１２のＮ極面１１ａ，１２
ａを対向配設し、各磁石１１，１２の非反撥面に磁性体
キャップ１３，１４を被嵌固定し、その外端面１３ｂ，
１４ｂを前記１対の磁石１１，１２の対向Ｎ極面１１
ａ，１２ａと同一面に位置させている。１５は上下磁石
１１，１２の磁性体キャップ１３，１４の外周を太鼓状
に巻回する弾性膜である。１６は上部磁性体キャップ１
３上に固定した載置台、１７は下部磁性体キャップ１４
下面に固定した基台である。Example: N pole faces 11a, 12 of a pair of magnets 11, 12
a is arranged to face each other, and magnetic caps 13 and 14 are fitted and fixed to the non-repulsive surfaces of the magnets 11 and 12, respectively, and outer end surfaces 13b and
14b is a facing N pole surface 11 of the pair of magnets 11 and 12.
It is located on the same plane as a and 12a. Reference numeral 15 is an elastic film that winds around the outer circumferences of the magnetic caps 13 and 14 of the upper and lower magnets 11 and 12 in a drum shape. 16 is an upper magnetic cap 1
3 is a mounting table fixed on 3, 17 is a lower magnetic cap 14
It is a base fixed to the bottom surface.
【０００７】１対の磁石１１，１２の中央部に貫通孔１
１ｂ，１２ｂを形成している。１８は下部を下部貫通孔
１２ｂ内面に磁性棒体１９によりシ−ル状態で上下動し
得るようになっている磁性棒体で、上部を上部貫通孔１
１ｂ内に挿通してある。上部磁性体キャップ１３の中央
には下方が拡がっているテ−パ−孔１３ａを形成し、載
置台１６の通孔２０に連通している。磁性棒体１８上端
面には前記テ−パ−孔１３ａに嵌合するテ−パ−突部１
８ａが形成してある。下部磁性体キャップ１４の中央に
は孔１４ａを形成し、基台１７の通孔２１に連通し、通
孔２０，２１を外部可撓パイプ２２により連通してい
る。A through hole 1 is formed at the center of the pair of magnets 11, 12.
1b and 12b are formed. Reference numeral 18 denotes a magnetic rod body having a lower portion which can be vertically moved in a seal state by a magnetic rod body 19 on the inner surface of the lower through hole 12b.
It is inserted in 1b. A taper hole 13a is formed at the center of the upper magnetic cap 13 and extends downward, and communicates with the through hole 20 of the mounting table 16. On the upper end surface of the magnetic rod body 18, a taper protrusion 1 which is fitted in the taper hole 13a.
8a is formed. A hole 14a is formed in the center of the lower magnetic cap 14 and communicates with a through hole 21 of the base 17, and the through holes 20 and 21 are communicated with each other by an external flexible pipe 22.
【０００８】次に作用について説明する。１対の磁石１
１，１２は対向面外端部及び中央部貫通孔１１ｂ，１２
ｂ外周端にＮ極を生じ、磁石１１，１２間に同じ強さの
反撥力ｆ1，ｆ2を生ずる。又、磁性体キャップ１３，１
４の端面１３ｂ，１４ｂ間に反撥力ｆ3を生ずる。従っ
て、全体として反撥力はｆ1＋ｆ2＋ｆ3となる。Next, the operation will be described. A pair of magnets 1
Reference numerals 1 and 12 denote through-holes 11b and 12 at the outer end and the central portion of the facing surface.
An N pole is generated at the outer peripheral edge of b, and repulsive forces f 1 and f 2 having the same strength are generated between the magnets 11 and 12. In addition, magnetic caps 13, 1
A repulsive force f 3 is generated between the end faces 13b and 14b of No. 4. Therefore, the repulsive force as a whole is f 1 + f 2 + f 3 .
【０００９】従来装置に比較して磁石の磁力は貫通孔１
１ｂ，１２ｂの体積分だけ減少するが、この減少に伴う
磁力の低下率よりも貫通孔１１ｂ，１２ｂ外周部に発生
する反撥力ｆ2と外端部の反撥力ｆ1の合計ｆ1＋ｆ2の反
撥力増加分の方が大きく、全体として反撥力が増加す
る。As compared with the conventional device, the magnetic force of the magnet has a through hole 1
Although the volume of 1b and 12b is reduced, the total repulsive force f 2 generated on the outer peripheral portions of the through holes 11b and 12b and the repulsive force f 1 of the outer ends f 1 + f 2 is lower than the rate of decrease in magnetic force due to the reduction. The larger the repulsive force is, the larger the repulsive force is as a whole.
【００１０】この状態で載置台１６上に精密機器を載置
すると上部磁石１１はその重量に応じて下降するが、磁
性棒体１８上端と上部磁性体キャップ１３下面との間に
間隔が存している状態の時は上部磁石１１の下降により
圧縮された空気はテ−パ−孔１３ａ、通孔２０、外部可
撓パイプ２２を通って通孔２１、孔１４ａより入り磁性
棒体１８下面を押し上げ空気バネは作用しない。従っ
て、精密機器は上部磁石の磁気反撥力による磁気浮上作
用のみにより防振される。When a precision instrument is placed on the placing table 16 in this state, the upper magnet 11 descends according to its weight, but there is a gap between the upper end of the magnetic rod 18 and the lower surface of the upper magnetic cap 13. In the state in which the air is compressed, the air compressed by the lowering of the upper magnet 11 passes through the taper hole 13a, the through hole 20 and the external flexible pipe 22 and enters through the through holes 21 and 14a to the lower surface of the magnetic rod 18. The push-up air spring does not work. Therefore, the precision instrument is vibration-proofed only by the magnetic levitation action by the magnetic repulsive force of the upper magnet.
【００１１】載置台１６に更に大きい下方に向う外力が
作用すると上部磁石１１は下降する。この時、テ−パ−
突部１８ａがテ−パ−孔１３ａ内に入り、載置台１６上
の重量が増加するに従ってテ−パ−突部１８ａとテ−パ
−孔１３ａ間の隙間が小さくなり、空気の流通抵抗が次
第に増加し空気バネが徐々に作用する。一定重量が加わ
るとテ−パ−突部１８ａはテ−パ−孔１３ａに密着し閉
塞する。この状態では内部空気は通孔２０より排出され
ないので前記磁気反撥力に加えて空気バネが作用し、よ
り強力な反撥力を生じ防振が行われる。When a larger downward force is applied to the mounting table 16, the upper magnet 11 descends. At this time, the taper
As the protrusion 18a enters the taper hole 13a and the weight on the mounting table 16 increases, the gap between the taper protrusion 18a and the taper hole 13a becomes smaller, and the air flow resistance is reduced. It gradually increases and the air spring gradually acts. When a constant weight is applied, the taper protrusion 18a is in close contact with the taper hole 13a and is closed. In this state, the internal air is not discharged from the through hole 20, so that the air spring acts in addition to the magnetic repulsion force, and a stronger repulsion force is generated to perform vibration isolation.
【００１２】なお、磁性棒体１９を用いず、磁性棒体１
８の代りに非磁性棒体を用い、その下部を下部磁石１２
の中心孔１２ｂ内に固定してもよい。It should be noted that the magnetic rod 1 is used without using the magnetic rod 19.
A non-magnetic rod body is used in place of 8, and the lower portion is a lower magnet 12
It may be fixed in the central hole 12b.
【００１３】[0013]
【発明の効果】本発明によると、１対の磁石の同極面を
対向配設し、各磁石の非反撥面に磁性体キャップを被嵌
固定し、その外端面を前記１対の磁石の対向面と略同一
面に位置させ、該磁性体キャップの端面を反対極となし
た磁気反撥装置に於て、上下磁石の外周を弾性膜で太鼓
状に巻回し、１対の磁石の中央部対向位置に貫通孔を形
成し、下部貫通孔内に棒体下部を嵌合し、該棒体上部を
上部貫通孔内に挿通し、その上端を上部磁性体キャップ
下面と所定の間隔を存して位置させ、上下部磁性体キャ
ップの中央部より外部へ通ずる通孔を形成し、外部可撓
パイプにより連通してあるので、小負荷の時は磁気反撥
力のみにより防振を行い、大負荷の時は磁気反撥力と空
気バネの両方により確実に防振を行うことができる。According to the present invention, the pair of magnets having the same polar surfaces are arranged to face each other, the non-repulsive surface of each magnet is fitted and fixed to the non-repulsive surface, and the outer end surface of the pair of magnets has the outer surface of the pair of magnets. In a magnetic repulsion device which is located on substantially the same plane as the opposing surface and whose end faces of the magnetic caps are opposite poles, the outer circumference of the upper and lower magnets is wound in a drum shape with an elastic film, and the central portion of the pair of magnets. A through hole is formed at the opposing position, the lower part of the rod is fitted in the lower through hole, the upper part of the rod is inserted into the upper through hole, and the upper end of the upper part of the upper magnetic cap is spaced from the lower face by a predetermined distance. Since the upper and lower magnetic caps have a through hole that opens from the center to the outside and is connected by an external flexible pipe, when a small load is applied, vibration is isolated only by magnetic repulsion and a large load is applied. At the time of, it is possible to surely perform the vibration proof by both the magnetic repulsion force and the air spring.
【図１】本発明の一実施例正断面図である。FIG. 1 is a front sectional view of an embodiment of the present invention.
【図２】従来装置の正断面図である。FIG. 2 is a front sectional view of a conventional device.
１１ 磁石 １１ｂ 貫通孔 １２ 磁石 １２ｂ 貫通孔 １３ 磁性体キャップ １３ａ テ−パ−孔 １４ 磁性体キャップ １５ 弾性膜 １６ 載置台 １７ 基台 １８ 磁性棒体 １８ａ テ−パ−突部 １９ 磁性棒体 ２０ 通孔 ２１ 通孔 ２２ 外部可撓パイプ 11 Magnet 11b Through Hole 12 Magnet 12b Through Hole 13 Magnetic Cap 13a Taper Hole 14 Magnetic Cap 15 Elastic Membrane 16 Mounting Table 17 Base 18 Magnetic Rod 18a Taper Projection 19 Magnetic Rod 20 Through Hole 21 Through hole 22 External flexible pipe
Claims (1)
石の非反撥面に磁性体キャップを被嵌固定し、その外端
面を前記１対の磁石の対向面と略同一面に位置させ、該
磁性体キャップの端面を反対極となした磁気反撥装置に
於て、上下磁石の外周を弾性膜で太鼓状に巻回し、１対
の磁石の中央部対向位置に貫通孔を形成し、下部貫通孔
内に棒体下部を嵌合し、該棒体上部を上部貫通孔内に挿
通し、その上端を上部磁性体キャップ下面と所定の間隔
を存して位置させ、上下部磁性体キャップの中央部より
外部へ通ずる通孔を形成し、外部可撓パイプにより連通
したことを特徴とする防振装置。1. A pair of magnets having the same polar surfaces facing each other, a non-repulsive surface of each magnet fitted and fixed with a magnetic cap, and an outer end surface thereof being substantially the same as the facing surface of the pair of magnets. In a magnetic repulsion device in which the end faces of the magnetic caps are opposite poles, the outer peripheries of the upper and lower magnets are wound in a drum shape with an elastic film, and a through hole is formed at a position facing the center of the pair of magnets. The lower part of the rod is fitted into the lower through hole, the upper part of the rod is inserted into the upper through hole, and the upper end of the rod is located at a predetermined distance from the lower surface of the upper magnetic cap. An anti-vibration device, characterized in that a through hole communicating from the central portion of the partial magnetic cap to the outside is formed and is communicated with an external flexible pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8592792A JPH05248492A (en) | 1992-03-09 | 1992-03-09 | Vibration isolating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8592792A JPH05248492A (en) | 1992-03-09 | 1992-03-09 | Vibration isolating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05248492A true JPH05248492A (en) | 1993-09-24 |
Family
ID=13872393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8592792A Pending JPH05248492A (en) | 1992-03-09 | 1992-03-09 | Vibration isolating device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05248492A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007046287A (en) * | 2005-08-09 | 2007-02-22 | Bridgestone Corp | Shock absorber |
| CN104074903A (en) * | 2014-06-30 | 2014-10-01 | 北京交通大学 | Magnetic liquid damping shock absorber with arc-shaped inner wall axial section |
| CN104613121A (en) * | 2015-01-26 | 2015-05-13 | 北京交通大学 | Outer taper angle magnetic liquid damping absorber |
| CN104613120A (en) * | 2015-01-23 | 2015-05-13 | 北京交通大学 | Magnetic fluid damping vibration absorber based on inner cone angle |
| CN104632982A (en) * | 2015-01-23 | 2015-05-20 | 北京交通大学 | Inner taper-angle magnetic liquid damping shock absorber with elastic cushion |
| CN104879436A (en) * | 2015-05-05 | 2015-09-02 | 常州大学 | Three-direction decoupled equal-rigidity vibration isolator based on integration of magnetic damping and electric damping |
-
1992
- 1992-03-09 JP JP8592792A patent/JPH05248492A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007046287A (en) * | 2005-08-09 | 2007-02-22 | Bridgestone Corp | Shock absorber |
| CN104074903A (en) * | 2014-06-30 | 2014-10-01 | 北京交通大学 | Magnetic liquid damping shock absorber with arc-shaped inner wall axial section |
| CN104613120A (en) * | 2015-01-23 | 2015-05-13 | 北京交通大学 | Magnetic fluid damping vibration absorber based on inner cone angle |
| CN104632982A (en) * | 2015-01-23 | 2015-05-20 | 北京交通大学 | Inner taper-angle magnetic liquid damping shock absorber with elastic cushion |
| CN104613120B (en) * | 2015-01-23 | 2016-08-24 | 北京交通大学 | Interior cone angle magnetic fluid damper |
| CN104632982B (en) * | 2015-01-23 | 2016-08-24 | 北京交通大学 | A kind of interior cone angle magnetic fluid damper of band cushion |
| CN104613121A (en) * | 2015-01-26 | 2015-05-13 | 北京交通大学 | Outer taper angle magnetic liquid damping absorber |
| CN104879436A (en) * | 2015-05-05 | 2015-09-02 | 常州大学 | Three-direction decoupled equal-rigidity vibration isolator based on integration of magnetic damping and electric damping |
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