JPH0799192B2 - Seismic isolation device - Google Patents
Seismic isolation deviceInfo
- Publication number
- JPH0799192B2 JPH0799192B2 JP62326283A JP32628387A JPH0799192B2 JP H0799192 B2 JPH0799192 B2 JP H0799192B2 JP 62326283 A JP62326283 A JP 62326283A JP 32628387 A JP32628387 A JP 32628387A JP H0799192 B2 JPH0799192 B2 JP H0799192B2
- Authority
- JP
- Japan
- Prior art keywords
- sliding
- seismic isolation
- sliding member
- surface portion
- isolation device
- 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 - Fee Related
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
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は免震装置に係り、例えばコンピュータシスムテ
ム等の電子機器等において良好な免震効果が得られるよ
う構成した免震装置に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation device, and more particularly to a seismic isolation device configured to obtain a good seismic isolation effect in electronic equipment such as a computer system.
従来の技術 コンピュータシステム等の電子機器等においては、その
耐震手段として、例えば特公昭57−50288号のものがあ
る。この公報のものは機器の底部に車輪を設けている
が、通常車輪より外側の位置で底部より突出する支柱と
床面との間にライナを介在させ、車輪が床面より離間す
るようになっている。従って、地震発生により床面から
所定以上の加速度が機器に伝達されると、支柱がライナ
より外れ車輪が床面に接し、床面上を転動する。2. Description of the Related Art For electronic equipment such as computer systems, there is, for example, Japanese Patent Publication No. 57-50288 as an earthquake-proof means. In this publication, a wheel is provided at the bottom of the equipment, but a liner is interposed between a pillar protruding from the bottom and a floor surface at a position outside the normal wheel so that the wheel is separated from the floor surface. ing. Therefore, when an acceleration of a predetermined value or more is transmitted from the floor surface to the equipment due to the occurrence of an earthquake, the support column comes off the liner and the wheels come into contact with the floor surface to roll on the floor surface.
発明が解決しようとする問題点 しかるに、上記のような耐震手段においては、比較的小
さな地震で支柱がライナから外れて車輪が床面上を転動
するように設定した場合、大きな地震が発生したときに
支柱が直ぐにライナから外れてしまい、車輪が勢い良く
床面上を転動することになり、機器自体が建物の壁に衝
突することになる。Problems to be Solved by the Invention However, in the above-mentioned earthquake-proof means, when a prop was set off from the liner and the wheels rolled on the floor surface in a relatively small earthquake, a large earthquake occurred. Sometimes the stanchions immediately disengage from the liner, causing the wheels to roll vigorously on the floor, causing the equipment itself to collide with the building walls.
また、大きな地震のときに支柱がライナから外れて車輪
が床面上を転動するように設定した場合、小さな地震が
発生したときに支柱がライナから外れず、免震動作が行
われないため、機器に地震による振動が伝わって機器が
損傷してしまうおそれがある。Also, if the props are set off the liner and the wheels roll on the floor during a large earthquake, the props will not come off the liner when a small earthquake occurs and seismic isolation will not be performed. , There is a risk that the equipment will be damaged by the vibration transmitted by the earthquake.
そのため、上記のような耐震手段を有する構成では、特
定の大きさの地震のときしか免震動作が行われず、比較
的小さい地震から大きな地震まで良好な免震効果を得る
ことができないといった問題点がある。Therefore, in the configuration having the above-mentioned earthquake-proof means, the seismic isolation operation is performed only in the case of an earthquake of a specific magnitude, and it is not possible to obtain a good seismic isolation effect from a relatively small earthquake to a large earthquake. There is.
そこで、本発明は上記問題点を解決した免震装置を提供
することを目的とする。Then, this invention aims at providing the seismic isolation apparatus which solved the said problem.
問題点を解決するための手段 本発明は、被支持物を支持する支柱の下端に設けられた
第１の滑動部材と、該第１の滑動部材が滑動自在に当接
する滑動面部と、 該滑動面部に設けられ、前記滑動面部の滑動範囲を規制
する壁部と、 前記滑動面部の裏面である底面に設けられた第２の滑動
部材と、からなり、 前記第２の滑動部材の前記底面に対向する面の裏面に生
ずる摩擦係数は、前記第１の滑動部材と前記滑動面部と
の間に生ずる摩擦係数よりも大きく設定されていること
を特徴とする。MEANS FOR SOLVING THE PROBLEMS The present invention relates to a first sliding member provided at the lower end of a column that supports an object to be supported, a sliding surface portion with which the first sliding member slidably abuts, and the sliding member. A wall portion provided on a surface portion for restricting a sliding range of the sliding surface portion; and a second sliding member provided on a bottom surface which is a back surface of the sliding surface portion, on the bottom surface of the second sliding member. The coefficient of friction generated on the back surface of the facing surface is set to be larger than the coefficient of friction generated between the first sliding member and the sliding surface portion.
また、本発明は、前記第１の滑動部材と前記滑動面部と
の間に生ずる摩擦係数と前記第２の滑動部材の前記底面
に対向する面の裏面に生ずる摩擦係数との比を1:4以下
の範囲内に設定してなることを特徴とする。Further, in the present invention, the ratio of the friction coefficient generated between the first sliding member and the sliding surface portion to the friction coefficient generated on the back surface of the surface of the second sliding member facing the bottom surface is 1: 4. It is characterized by being set within the following range.
また、本発明は、被支持物を支持する支柱の下端に設け
られた第１の滑動部材と、 該第１の滑動部材が滑動自在に当接する滑動面部と、 該滑動面部に設けられ、前記滑動面部の滑動範囲を規制
する壁部と、 前記滑動面部の裏面である底面に設けられた第２の滑動
部材と、 前記被支持物の底面の前記支柱より外側の位置に設けら
れ、通常床面に対して近接離間しており、前記被支持物
が傾きかけたとき該床面に当接して傾きを規制する規制
部材と、からなり、 前記第２の滑動部材の前記底面に対向する面の裏面に生
ずる摩擦係数は、前記第１の滑動部材と前記滑動面部と
の間に生ずる摩擦係数よりも大きく設定されていること
を特徴とする。Further, the present invention provides a first sliding member provided at a lower end of a column supporting a supported object, a sliding surface portion with which the first sliding member slidably abuts, and a sliding surface portion provided on the sliding surface portion. A wall portion that regulates the sliding range of the sliding surface portion, a second sliding member that is provided on the bottom surface that is the back surface of the sliding surface portion, and a position on the bottom surface of the supported object that is outside the pillars, and is usually a floor. A surface that is close to and away from the surface and that abuts against the floor surface when the supported object is tilted to restrict the tilt, and a surface that faces the bottom surface of the second sliding member. The coefficient of friction generated on the back surface of is set larger than the coefficient of friction generated between the first sliding member and the sliding surface portion.
作用 本発明によれば、地震発生による比較的小さな振動が伝
播されたとき、第１の滑動部材が滑動面部を滑動して免
震動作することができ、さらに大きな振動が伝播された
ときは第２の滑動部材が床面を摺動することができるの
で、比較的小さな地震から大きな地震まで効果的な免震
動作を行うことができる。Effect According to the present invention, when a relatively small vibration due to an earthquake is propagated, the first sliding member can slide on the sliding surface portion to perform a base isolation operation, and when a larger vibration is propagated, Since the second sliding member can slide on the floor surface, effective seismic isolation operation can be performed from a relatively small earthquake to a large earthquake.
また、第１の滑動部材と滑動面部との間に生ずる摩擦係
数と第２の滑動部材の底面に対向する面の裏面に生ずる
摩擦係数との比を1:4以下の範囲内に設定することによ
り、第１の滑動部材及び第２の滑動部材の滑動動作がス
ムーズに行える。Further, the ratio of the friction coefficient generated between the first sliding member and the sliding surface portion and the friction coefficient generated on the back surface of the surface facing the bottom surface of the second sliding member should be set within a range of 1: 4 or less. Thereby, the sliding motion of the first sliding member and the second sliding member can be smoothly performed.
また、被支持物の底面の支柱より外側の位置に設けら
れ、通常床面に対して近接離間しており、被支持物が傾
きかけたとき床面に当接して傾きを規制する規制部材を
有するため、過大な振動が伝播されて被支持物が傾いて
も規制部材が床面に当接してそれ以上被支持物が傾くこ
とを防止することができる。In addition, a regulating member that is provided at a position on the bottom surface of the supported object outside the pillar and is normally close to and separated from the floor surface, and comes into contact with the floor surface when the supported object leans to regulate the tilt. Therefore, even if the excessive vibration is propagated and the supported object is tilted, it is possible to prevent the restricting member from coming into contact with the floor surface and further tilting the supported object.
実施例 第１図乃至第３図に本発明になる免震装置の一実施例を
示す。Embodiment FIG. 1 to FIG. 3 show an embodiment of the seismic isolation device according to the present invention.
各図中、免震装置１はコンピュータシステム等の電子機
器２の底部の四隅近傍に配設されている。３はキャスタ
（規制部材）で、電子機器２の底面角部に回動自在に取
付けられた支持具3aと、支持具3aの端部に転動自在に支
持された車輪3bとを有する。このキャスタ３の車輪3bは
電子機器２を設置現場等へ運搬するとき、あるいは後述
するように地震発生時電子機器２が倒壊することを防止
するときに床面４を転動するものであって、設置後にお
いては通常床面４に対して若干の隙間５（例えば0.5mm
程度）が設けられている。In each figure, the seismic isolation device 1 is arranged near the four corners of the bottom of the electronic device 2 such as a computer system. Reference numeral 3 is a caster (regulating member), which has a support tool 3a rotatably attached to a corner of the bottom surface of the electronic device 2, and a wheel 3b rotatably supported at an end of the support tool 3a. The wheels 3b of the casters 3 roll on the floor surface 4 when the electronic device 2 is transported to an installation site or the like, or when the electronic device 2 is prevented from collapsing in the event of an earthquake as described later. After installation, there is a slight gap 5 (for example, 0.5mm) to the floor 4.
Degree) is provided.
免震装置１の詳細は第３図に示す構成となっている。第
３図中、免震装置１は電子機器２の底面取付部６に固着
されたナット７にねじ部8aを螺合させてなる支柱８を有
している。なお、ナット７は高さ調整用ボルトを取付け
るために従来より設けられていたものである。又、上記
支柱８は機器重量を支えるとともに、ナット７へのねじ
込み量を調整することにより高さ調整が行なえるように
設けられている。The details of the seismic isolation device 1 are configured as shown in FIG. In FIG. 3, the seismic isolation device 1 has a column 8 formed by screwing a nut 7 fixed to a bottom surface mounting portion 6 of an electronic device 2 with a screw portion 8a. Note that the nut 7 is conventionally provided for mounting the height adjusting bolt. Further, the column 8 is provided so as to support the weight of the device and to adjust the height by adjusting the amount of screwing into the nut 7.
尚、支柱８中の中間部外周にはねじ込み量を調整する
際、スパナ等の工具を係合させる係合面8bが設けられ、
その下方にはねじ部8aより大径な下端部8cが形成されて
いる。９はロックナットで、支柱８のねじ込み量を調整
した後、締付けられ支柱８をその位置にロックする。Incidentally, an engaging surface 8b for engaging a tool such as a wrench when the screwing amount is adjusted is provided on the outer periphery of the middle portion of the column 8.
A lower end portion 8c having a diameter larger than that of the screw portion 8a is formed below it. Reference numeral 9 denotes a lock nut, which is tightened after adjusting the screwing amount of the support column 8 and locks the support column 8 at that position.
支柱８の下端部8cの下端凹部には環状の低摩擦部材（第
１の滑動部材）10が嵌合固定されている。低摩擦部材10
の上面と支柱８との間には中央に貫通孔11aを有する押
え板11が介在している。An annular low friction member (first sliding member) 10 is fitted and fixed in the lower end recess of the lower end 8c of the column 8. Low friction member 10
A pressing plate 11 having a through hole 11a in the center is interposed between the upper surface of the column and the column 8.
12は油溜め部材で、例えば潤滑油を含浸されたフェルト
等よりなり、支柱８の凹部8d内に収納されている。又、
油溜め部材12は上記押え板11により脱落を防止されてい
る。Reference numeral 12 denotes an oil sump member, which is made of, for example, felt impregnated with lubricating oil, and is accommodated in the recess 8d of the column 8. or,
The oil sump member 12 is prevented from falling off by the pressing plate 11.
油溜め部材12に含浸されている潤滑油は後述するように
押え板11の貫通孔11aより低摩擦部材10に少量ずつ供給
され、免震動作をより円滑にする。The lubricating oil with which the oil sump member 12 is impregnated is supplied little by little to the low friction member 10 through the through hole 11a of the pressing plate 11 as described later to make the seismic isolation operation smoother.
13はベース（載置部材）で、低摩擦部材10が摺接する平
滑な平面部（滑動面部）13aと、平面部13aの周縁で垂立
する壁部13bとを有する。また、ベース13の底面には低
摩擦部材（第２の滑動部材）14が設けられており、低摩
擦部材14は床面４上に当接している。尚、この摩擦部材
14の摩擦係数は上記低摩擦部材10の摩擦係数より大きな
値に設定されており、即ち低摩擦部材10と14との摩擦係
数の比は1:4以内の範囲で設定されている。Reference numeral 13 denotes a base (mounting member), which has a smooth flat surface portion (sliding surface portion) 13a with which the low friction member 10 is in sliding contact, and a wall portion 13b that stands upright at the peripheral edge of the flat surface portion 13a. Further, a low friction member (second sliding member) 14 is provided on the bottom surface of the base 13, and the low friction member 14 is in contact with the floor surface 4. In addition, this friction member
The friction coefficient of 14 is set to a value larger than the friction coefficient of the low friction member 10, that is, the ratio of the friction coefficients of the low friction members 10 and 14 is set within the range of 1: 4.
したがって、比較的小さな加速度が床面４に作用したと
きは、低摩擦部材10がベース13の平面部13a上を滑動す
るが、低摩擦部材14は床面４に当接したまま動かず、所
定以上の加速度が作用したとき、初めて低摩擦部材14は
床面４上を滑動する。Therefore, when a relatively small acceleration acts on the floor surface 4, the low-friction member 10 slides on the flat surface portion 13a of the base 13, but the low-friction member 14 remains in contact with the floor surface 4 and does not move. Only when the above acceleration acts, the low friction member 14 slides on the floor surface 4.
15は円錐形のコイルバネで、内周が支柱８に嵌合し、外
周がベース13の角部に当接し、支柱８がベース13の中央
部に復帰するように支柱８を全周より附勢している。ま
た、コイルバネ15は支柱８の下端部8cの外周に嵌合し、
止め輪16により係止されたストッパ部材としての環状の
鍔部材17に当接し、上方への飛び出しを防止されてい
る。さらに、コイルバネ15は円錐形とされているがその
傾斜角度は小さい。そのため、コイルバネ15の高さ寸法
は極めて小さく、その分免震装置１は薄型化されてい
る。Reference numeral 15 is a conical coil spring, the inner periphery of which is fitted to the column 8 and the outer periphery of which is abutted against the corner of the base 13, and the column 8 is biased from the entire periphery so as to return to the center of the base 13. is doing. Further, the coil spring 15 is fitted to the outer periphery of the lower end portion 8c of the column 8,
It comes into contact with an annular flange member 17 as a stopper member locked by the retaining ring 16 and is prevented from popping out upward. Further, the coil spring 15 has a conical shape, but its inclination angle is small. Therefore, the height of the coil spring 15 is extremely small, and the seismic isolation device 1 is thinned accordingly.
18はベース13の上部開口を密閉するゴム製のカバーで、
支柱８に嵌合する内周部18aと、ベース13の壁部13bの内
側及び外側に嵌合する外周部18bと、内周部18aとの外周
部18bとの間を接続する蛇腹状の接続部18cとよりなり、
塵埃等の侵入を防止するためベース13の開口部に取付け
られている。18 is a rubber cover that seals the upper opening of the base 13,
A bellows-like connection that connects the inner peripheral portion 18a fitted to the support column 8, the outer peripheral portion 18b fitted inside and outside the wall portion 13b of the base 13, and the outer peripheral portion 18b of the inner peripheral portion 18a. Consisting of part 18c,
It is attached to the opening of the base 13 to prevent the entry of dust and the like.
尚、カバー18を上記のように取付けてなるため、ベース
13の平面部13aに塵埃等が付着せず低摩擦部材10の円滑
な摺動動作が補償されている。又、支柱８がコイルバネ
15のバネ力に抗してベース13の壁部13bに近接する際コ
イルバネ15が密着する前に鍔部材17がカバー18の外周部
18b内側に当接し、コイルバネ15の変形を防止する。
又、鍔部材17が壁部13bに直接当接せず、カバー18の外
周部18bが間に介在しているため、金属間の当接による
静電気の発生がなく、コンピュータ等の電子機器２に影
響を及ぼすおそれがない。しかも、鍔部材17と壁部13と
が衝突する際の加速度が上記カバー18の外周部18bによ
って緩衝され、衝撃が緩和される。Since the cover 18 is attached as described above, the base
Dust or the like does not adhere to the flat surface portion 13a of 13 and the smooth sliding operation of the low friction member 10 is compensated. Also, the column 8 is a coil spring.
When the coil spring 15 comes into close contact with the wall portion 13b of the base 13 against the spring force of the base 15, the collar member 17 is attached to the outer peripheral portion of the cover 18 before the coil spring 15 comes into close contact
It contacts the inside of 18b and prevents the coil spring 15 from being deformed.
Further, since the flange member 17 does not directly contact the wall portion 13b and the outer peripheral portion 18b of the cover 18 is interposed, static electricity due to contact between metals does not occur, and the electronic device 2 such as a computer is There is no risk of impact. Moreover, the acceleration when the collar member 17 and the wall portion 13 collide is buffered by the outer peripheral portion 18b of the cover 18, and the impact is relieved.
ここで、上記構成による免震装置１の地震発生時の動作
につき説明する。Here, the operation of the seismic isolation device 1 having the above-described configuration when an earthquake occurs will be described.
地震が発生すると、地震による横揺れが床面４に伝達さ
れる。そして、地震による床面４の加速度が増加する
と、ベース13が床面４とともに水平方向に移動する。し
かるに、支柱８下端の低摩擦部材10がベース13の平面部
13に当接し、しかも油溜め部材12より潤滑油が供給され
ているため、地震による加速度が比較的小さくても、支
柱８は平面部13b上を相対的に滑動する。When an earthquake occurs, rolling caused by the earthquake is transmitted to the floor surface 4. Then, when the acceleration of the floor surface 4 due to the earthquake increases, the base 13 moves in the horizontal direction together with the floor surface 4. However, the low-friction member 10 at the lower end of the column 8 is the flat portion of the base 13.
Since the lubricating oil is in contact with 13 and the lubricating oil is supplied from the oil sump member 12, the column 8 relatively slides on the flat surface portion 13b even if the acceleration due to the earthquake is relatively small.
このように、支柱８が低摩擦で滑動するため、地震によ
る振動はほとんど電子機器２に伝達されない。従って、
電子機器２は比較的小さな地震であっても、その加速度
の影響をほとんど受けない。In this way, since the column 8 slides with low friction, vibration due to the earthquake is hardly transmitted to the electronic device 2. Therefore,
The electronic device 2 is hardly affected by the acceleration even if the earthquake is relatively small.
尚、上記のように地震による加速度が比較的小さい場
合、ベース13下側の低摩擦部材14の摩擦係数が支柱下端
の低摩擦部材10よりも大きいため、ベース13自体は床面
４とともに移動する。又、上記支柱８は水平方向に滑動
した後、バネ15のバネ力により元の位置に復帰する。When the acceleration due to the earthquake is relatively small as described above, the coefficient of friction of the low-friction member 14 below the base 13 is larger than that of the low-friction member 10 at the lower end of the column, so the base 13 itself moves with the floor surface 4. . The column 8 slides in the horizontal direction and then returns to its original position by the spring force of the spring 15.
さらに、地震による加速度が増大すると、支柱８は第４
図に示す如く、大きく平面部13b上を滑動する。従っ
て、床面４に所定以上の加速度が作用すると、支柱８は
バネ15のバネ力に抗して水平方向に滑動し、鍔部材17が
壁部13aの内側に嵌合するカバー18の外周部18bに当接す
る。このとき、鍔部材17は弾性を有するカバー18に当接
するため、その加速度が緩衝される。Further, when the acceleration due to the earthquake increases,
As shown in the figure, it slides largely on the flat surface portion 13b. Therefore, when an acceleration of a predetermined amount or more is applied to the floor surface 4, the column 8 slides in the horizontal direction against the spring force of the spring 15, and the flange member 17 fits inside the wall portion 13a. Contact 18b. At this time, the collar member 17 abuts the elastic cover 18, so that the acceleration is damped.
このように、鍔部材17が壁部13aに衝突することによ
り、支柱８が停止した場合支柱８はバネ15のバネ力によ
り元の位置に戻される。ところが、比較的大きな地震が
発生した場合その加速度も相当大きなものとなるため、
支柱８は鍔部材17が壁部13aに衝突した後もその勢いで
滑動しようとする。In this way, when the pillar 8 stops due to the collar member 17 colliding with the wall portion 13a, the pillar 8 is returned to the original position by the spring force of the spring 15. However, when a comparatively large earthquake occurs, its acceleration will be considerably large, so
The strut 8 tries to slide with its force even after the collar member 17 collides with the wall portion 13a.
その場合、支柱８の加速度が充分に減衰せず、支柱８は
ベース13を押圧しながら同方向に滑動することになる。
即ち、鍔部材17がベース13の壁部13aを押圧することに
より、ベース底面の低摩擦部材14が床面４上を滑動しは
じめる。In that case, the acceleration of the column 8 is not sufficiently attenuated, and the column 8 slides in the same direction while pressing the base 13.
That is, when the flange member 17 presses the wall portion 13a of the base 13, the low friction member 14 on the bottom surface of the base starts sliding on the floor surface 4.
その結果、比較的大きな加速度が床面４に作用した場
合、免震装置１は支柱８とともに全体的に床面４を滑動
して面震動作を行い、地震発生による振動が電子機器２
に伝達することを阻止する。As a result, when a relatively large acceleration acts on the floor surface 4, the seismic isolation device 1 slides on the floor surface 4 as a whole together with the support pillars 8 to perform a surface vibration operation, and the vibration caused by the earthquake causes the electronic device 2 to move.
Prevent it from being transmitted to.
尚、キャスタ３の車輪3bは床面４に近接しているが、隙
間５を介して床面４より離間しているため、免震装置１
の上記免震動作を妨げることはない。The wheels 3b of the casters 3 are close to the floor surface 4, but are separated from the floor surface 4 through the gap 5, so that the seismic isolation device 1
It does not interfere with the above seismic isolation operation.
又、床面４は場所によって汚れていたり、埃等が付着し
ていることが多い。そのため、上記の如く、免震装置１
自体が床面４上を滑動する際、四隅の各免震装置１が同
一の速度で滑動するとは限らない。この場合、一の免震
装置１が床面４の汚れ等によって円滑に滑動できず、引
きずるように滑動することになる。In addition, the floor surface 4 is often soiled or dusty depending on the location. Therefore, as described above, the seismic isolation device 1
When itself slides on the floor 4, the seismic isolation devices 1 at the four corners do not always slide at the same speed. In this case, the seismic isolation device 1 cannot slide smoothly due to dirt on the floor surface 4 or the like, and slides like a drag.
その結果、電子機器２はバランスをくずして傾くことが
あるが、その際傾いた側のキャスタ３の車輪3bが床面４
に接し、床面４上を転動する。このように、電子機器２
が倒れそうになると車輪3bの接地により電子機器２の倒
壊が規制されるとともに、動きが円滑でない免震装置１
の床面４上の滑動が促され、免震動作が補助される。
又、キャスタ３は各免震装置１よりも外側に位置してい
るので、電子機器２を支えるときの安定度が高い。As a result, the electronic device 2 may lose its balance and tilt, but at that time, the wheels 3b of the casters 3 on the tilted side are not supported by the floor surface 4.
And rolls on the floor surface 4. In this way, the electronic device 2
When the wheel is about to fall, the grounding of the wheel 3b prevents the electronic device 2 from collapsing and the seismic isolation device 1 does not move smoothly.
The sliding on the floor surface 4 is promoted, and the seismic isolation operation is assisted.
Further, since the casters 3 are located outside the seismic isolation devices 1, the stability when supporting the electronic device 2 is high.
従って、過大な加速度が作用したとしても、上記免震装
置１とキャスタ３との連続的な動作により良好な免震効
果を得ることができる。Therefore, even if an excessive acceleration acts, a good seismic isolation effect can be obtained by the continuous operation of the seismic isolation device 1 and the casters 3.
尚、上記実施例ではベース13を支柱８の下方に一段設け
て説明したが、上記ベース13の下側にこれより大径なベ
ース13をさらに複数段重ね支柱８の滑動範囲を拡げるよ
うにしても良い。In the above embodiment, the base 13 is provided below the supporting column 8 in one step, but the base 13 having a larger diameter than that of the base 13 is stacked below the supporting column 13 to expand the sliding range of the supporting column 8. Is also good.
尚、上記実施例では支柱８の下端に環状の低摩擦部材10
を設けたが、これに限らず、支柱８の下端に転動自在な
ボールを設け、ボールがベース13の平面部13b上を転動
して免震動作するようにしても良い。It should be noted that in the above embodiment, an annular low friction member 10 is provided at the lower end of the column 8.
However, the present invention is not limited to this, and a rollable ball may be provided at the lower end of the column 8 so that the ball rolls on the flat surface portion 13b of the base 13 to perform the seismic isolation operation.
又、上記実施例では免震装置１の外側にキャスタ３を設
けたが、これに限らず、例えばキャスタ３の代りに電子
機器２が傾いたとき床面４に当接し傾きを規制するとと
もに、低摩擦で滑動しうるそり等の規制部材を電子機器
２の底部に設け、免震装置の免震動作を補助するととも
に電子機器２の倒壊を防止するようにしても良い。Further, although the caster 3 is provided outside the seismic isolation device 1 in the above-described embodiment, the present invention is not limited to this. For example, when the electronic device 2 is tilted instead of the caster 3, the electronic device 2 comes into contact with the floor surface 4 to regulate the tilt, and A restricting member such as a sled that can slide with low friction may be provided at the bottom of the electronic device 2 to assist the seismic isolation operation of the seismic isolation device and prevent the electronic device 2 from collapsing.
発明の効果 上述の如く、本発明になる免震装置は、地震発生による
比較的小さな振動が伝播されたとき、第１の滑動部材が
滑動面部を滑動して免震動作することができ、さらに大
きな振動が伝播されたときは第２の滑動部材が床面を摺
動するため、比較的小さな地震から大きな地震まで広範
囲に効果的な免震動作を行うことができ、地震による振
動が被支持物に伝達することを防止できる。しかも、被
支持物を支持する各支柱に取り付けられるので、簡単に
取り付けることができ、例えばコンピュータシステム等
の地震に弱い電子機器を個別に免震することができる。
さらに、支柱を機器底部に設けられた高さ調整用のネジ
孔に螺合させることにより各機器の高さ調整を支柱のね
じ込み量によって調整することができる。EFFECTS OF THE INVENTION As described above, in the seismic isolation device according to the present invention, when a relatively small vibration due to an earthquake is propagated, the first sliding member slides on the sliding surface portion to perform the seismic isolation operation. When a large vibration is propagated, the second sliding member slides on the floor surface, so effective seismic isolation operation can be performed in a wide range from a relatively small earthquake to a large earthquake, and the vibration caused by the earthquake is supported. It can be prevented from being transmitted to an object. Moreover, since it can be attached to each column that supports the object to be supported, it can be easily attached, and electronic devices such as a computer system, which are vulnerable to an earthquake, can be individually isolated.
Furthermore, the height adjustment of each device can be adjusted by the screwing amount of the support by screwing the support into a screw hole for height adjustment provided at the bottom of the device.
また、第１の滑動部材と滑動面部との間に生ずる摩擦係
数と第２の滑動部材の底面に対向する面の裏面に生ずる
摩擦係数との比を1:4以下の範囲内に設定することによ
り、第１の滑動部材及び第２の滑動部材の滑動動作がス
ムーズに行うことができる。Further, the ratio of the friction coefficient generated between the first sliding member and the sliding surface portion and the friction coefficient generated on the back surface of the surface facing the bottom surface of the second sliding member should be set within a range of 1: 4 or less. Thereby, the sliding motion of the first sliding member and the second sliding member can be smoothly performed.
また、被支持物の底面の支柱より外側の位置に設けら
れ、通常床面に対して近接離間しており、被支持物が傾
きかけたとき床面に当接して傾きを規制する規制部材を
有するため、過大な振動が伝播されて被支持物が傾いて
も規制部材が床面に当接してそれ以上被支持物が傾くこ
とを防止することができる。従って、所定以上の大きな
地震が発生したとき、規制部材が床面に当接して被支持
物の倒壊を防止すると共に、規制部材が床面を摺動する
ことにより免震装置自体の滑動動作を補助することもで
きる。In addition, a regulating member that is provided at a position on the bottom surface of the supported object outside the pillar and is normally close to and separated from the floor surface, and comes into contact with the floor surface when the supported object leans to regulate the tilt. Therefore, even if the excessive vibration is propagated and the supported object is tilted, it is possible to prevent the restricting member from coming into contact with the floor surface and further tilting the supported object. Therefore, when a large earthquake of a predetermined magnitude or more occurs, the regulating member comes into contact with the floor surface to prevent the supported object from collapsing, and the regulating member slides on the floor surface to allow the seismic isolation device itself to slide. It can also assist.
第１図及び第２図は本発明になる免震装置の一実施例に
より電子機器を支持している状態を示す正面図及び平面
図、第３図は本発明の要部を説明するための拡大図、第
４図は所定以上の加速度が作用したときの動作を説明す
るための拡大図である。 １……免震装置、２……電子機器、３キャスタ、４……
床面、10……低摩擦部材、12……油溜め部材、13……ベ
ース、14……低摩擦部材、15……コイルバネ、17……鍔
部材、18……カバー。1 and 2 are a front view and a plan view showing a state in which an electronic device is supported by an embodiment of a seismic isolation apparatus according to the present invention, and FIG. 3 is a view for explaining a main part of the present invention. An enlarged view and FIG. 4 are enlarged views for explaining the operation when an acceleration of a predetermined value or more acts. 1 ... Seismic isolation device, 2 ... Electronic device, 3 casters, 4 ...
Floor, 10 …… Low friction member, 12 …… Oil sump member, 13 …… Base, 14 …… Low friction member, 15 …… Coil spring, 17 …… Brim member, 18 …… Cover.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 深田 脩敬 神奈川県小田原市国府津2880番地 株式会 社日立製作所小田原工場内 (72)発明者 宮崎 正好 神奈川県秦野市堀山下１番地 株式会社日 立製作所神奈川工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsukasa Fukada 2880 Kokufu, Odawara-shi, Kanagawa Stock company Hitachi Ltd. Odawara factory (72) Inventor Masayoshi Miyazaki 1 Horiyamashita, Hadano-shi, Kanagawa Hitate Manufacturing Co., Ltd. Kanagawa factory
Claims (3)
た第１の滑動部材と、 該第１の滑動部材が滑動自在に当接する滑動面部と、 該滑動面部に設けられ、前記滑動面部の滑動範囲を規制
する壁部と、 前記滑動面部の裏面である底面に設けられた第２の滑動
部材と、からなり、 前記第２の滑動部材の前記底面に対向する面の裏面に生
ずる摩擦係数は、前記第１の滑動部材と前記滑動面部と
の間に生ずる摩擦係数よりも大きく設定されていること
を特徴とする免震装置。1. A first sliding member provided at a lower end of a column supporting a supported object, a sliding surface portion on which the first sliding member slidably contacts, and a sliding surface provided on the sliding surface portion. It is composed of a wall portion that regulates the sliding range of the surface portion, and a second sliding member provided on the bottom surface that is the back surface of the sliding surface portion, and occurs on the back surface of the surface of the second sliding member that faces the bottom surface. The seismic isolation device is characterized in that a friction coefficient is set to be larger than a friction coefficient generated between the first sliding member and the sliding surface portion.
ずる摩擦係数と前記第２の滑動部材の前記底面に対向す
る面の裏面に生ずる摩擦係数との比を1:4以下の範囲内
に設定してなることを特徴とする特許請求の範囲第１項
記載の免震装置。2. The ratio of the coefficient of friction generated between the first sliding member and the sliding surface portion to the coefficient of friction generated on the back surface of the surface of the second sliding member facing the bottom surface is 1: 4 or less. The seismic isolation device according to claim 1, wherein the seismic isolation device is set within a range.
た第１の滑動部材と、 該第１の滑動部材が滑動自在に当接する滑動面部と、 該滑動面部に設けられ、前記滑動面部の滑動範囲を規制
する壁部と、 前記滑動面部の裏面である底面に設けられた第２の滑動
部材と、 前記被支持物の底面の前記支柱より外側の位置に設けら
れ、通常床面に対して近接離間しており、前記被支持物
が傾きかけたとき該床面に当接して傾きを規制する規制
部材と、からなり、 前記第２の滑動部材の前記底面に対向する面の裏面に生
ずる摩擦係数は、前記第１の滑動部材と前記滑動面部と
の間に生ずる摩擦係数よりも大きく設定されていること
を特徴とする免震装置。3. A first sliding member provided at a lower end of a column supporting a supported object, a sliding surface portion on which the first sliding member slidably abuts, and a sliding surface provided on the sliding surface portion. A wall portion that restricts the sliding range of the surface portion, a second sliding member that is provided on the bottom surface that is the back surface of the sliding surface portion, and a position that is provided outside the pillar on the bottom surface of the supported object, and is usually a floor surface. And a regulating member that comes into contact with the floor when the supported object leans and regulates the lean when the supported object leans toward the bottom surface of the second sliding member that faces the bottom surface. The seismic isolation device is characterized in that the coefficient of friction generated on the back surface is set to be larger than the coefficient of friction generated between the first sliding member and the sliding surface portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62326283A JPH0799192B2 (en) | 1987-12-23 | 1987-12-23 | Seismic isolation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62326283A JPH0799192B2 (en) | 1987-12-23 | 1987-12-23 | Seismic isolation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01169143A JPH01169143A (en) | 1989-07-04 |
| JPH0799192B2 true JPH0799192B2 (en) | 1995-10-25 |
Family
ID=18186036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62326283A Expired - Fee Related JPH0799192B2 (en) | 1987-12-23 | 1987-12-23 | Seismic isolation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0799192B2 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3058364B2 (en) * | 1991-10-03 | 2000-07-04 | 富士通株式会社 | Electronic device foot |
| JP2933912B1 (en) * | 1998-03-27 | 1999-08-16 | 日本ピラー工業株式会社 | Seismic isolation sliding bearing device |
| JP2000081081A (en) * | 1998-06-26 | 2000-03-21 | Bridgestone Corp | Slider |
| JP2003074628A (en) * | 2001-09-04 | 2003-03-12 | Nec Corp | Base isolator |
| JP2003269532A (en) * | 2002-03-14 | 2003-09-25 | Nec Corp | Base isolation device |
| JP5288246B2 (en) * | 2008-05-26 | 2013-09-11 | 株式会社ダイフク | Load support device for load storage rack |
| JP4947437B2 (en) * | 2008-05-26 | 2012-06-06 | 株式会社ダイフク | Load support device for load storage rack |
| JP5148528B2 (en) * | 2009-02-19 | 2013-02-20 | 株式会社竹中工務店 | Sliding support structure of structure |
| WO2011065031A1 (en) * | 2009-11-27 | 2011-06-03 | Ikeda Kaidou | High-speed/highly-pressure-resistant free action bearing and manufacturing method therefor |
| JP5588835B2 (en) * | 2010-11-10 | 2014-09-10 | 株式会社大林組 | Friction damper |
| JP6343437B2 (en) * | 2012-09-24 | 2018-06-13 | 三協立山株式会社 | Seismic isolator and supported object equipped with seismic isolator |
| JP6796817B2 (en) * | 2016-02-15 | 2020-12-09 | 清水建設株式会社 | Seismic isolation mechanism |
| JP6914407B2 (en) * | 2016-02-15 | 2021-08-04 | 清水建設株式会社 | Seismic isolation mechanism |
| CN107953448A (en) * | 2017-12-08 | 2018-04-24 | 泰州市春为强通用机械有限公司 | A kind of cooling damping device of special tubular pile centrifugal machine |
-
1987
- 1987-12-23 JP JP62326283A patent/JPH0799192B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01169143A (en) | 1989-07-04 |
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