JP3213610B2 - Rolling element for seismic isolation and seismic isolation device using the same - Google Patents

Rolling element for seismic isolation and seismic isolation device using the same

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Publication number
JP3213610B2
JP3213610B2 JP2000179238A JP2000179238A JP3213610B2 JP 3213610 B2 JP3213610 B2 JP 3213610B2 JP 2000179238 A JP2000179238 A JP 2000179238A JP 2000179238 A JP2000179238 A JP 2000179238A JP 3213610 B2 JP3213610 B2 JP 3213610B2
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Japan
Prior art keywords
seismic isolation
shaft
rolling element
guide member
isolation device
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JP2000179238A
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Japanese (ja)
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JP2001074090A (en
Inventor
将男 秋元
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有限会社サンコーエンジニアリング
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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、建築物、機械、電
算機、各種器物等における地震動に対する免震用転動体
及びこれを用いた免震装置の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seismic isolation rolling element for earthquake motion in buildings, machines, computers, various objects, and the like, and an improvement of a seismic isolation device using the same.

【０００２】[0002]

【従来の技術】従来、発生した地震動によって建築物、
器物等の損壊を防止するために例えば下記各種の免震装
置が開発されている（建築物、器物等を被支持体とし、
基礎等を支持体として説明する）。 （イ） 被支持体と支持体間に各種積層ゴムを介在させ
た免震装置がある（社団法人 発明協会発行「発明」１
９９５年６月号記載）。 （ロ） 被支持体の荷重を支持して支持体に伝達する中
間体を設け、中間体を複数個のつる巻ばねにより所定方
向に振動可能に支持するか、又はこれにオイルダンパー
等のダンパーを併用した構造の免震装置がある。 （ハ） 支持体上に湾曲面の支持部材を取付け、被支持
体をリテーナーによって保持されたボールベアリング列
を介して支持部材上を転動可能な球体によって支持した
構造の免震装置がある。 （ニ） 本発明者によって開発された、支持体上の湾曲
面と被支持体下の湾曲面との間に転動可能な円形断面棒
状の転動体を挟み、転動体両端の中央部と回動可能に支
持体及び被支持体に連結されたリンク機構を有する免震
装置がある（特開平１０−８７６３号公報記載、）。 （ホ） 本発明者によって開発された、支持体上に湾曲
面の案内部材を取付け、被支持体を軸線回りに転動可能
な転動体によって支持する構造の免震装置がある（特公
平６−７４６０９号公報記載）。これらの免震装置を実
際に使用する場合には、免震装置を支持体と被支持体間
に被支持体の重量や形状に応じて複数個を並べたり重ね
たりしている。2. Description of the Related Art Conventionally, buildings,
For example, the following various seismic isolation devices have been developed to prevent damage to equipment, etc. (buildings, equipment, etc. are supported,
The base will be described as a support). (B) There is a seismic isolation device in which various types of laminated rubber are interposed between the supported member and the support member.
June 995). (B) An intermediate body for supporting the load of the supported body and transmitting the load to the support body is provided, and the intermediate body is supported by a plurality of helical springs so as to be able to vibrate in a predetermined direction, or a damper such as an oil damper is provided on the intermediate body. There is a seismic isolation device with a structure that combines (C) There is a seismic isolation device having a structure in which a support member having a curved surface is mounted on a support, and the supported member is supported by rolling balls on the support member via a row of ball bearings held by a retainer. (D) A rolling member having a circular cross-section rod shape that can roll between a curved surface on a support and a curved surface below a supported member, developed by the present inventor, and is connected to the center of both ends of the rolling member. There is a seismic isolation device having a link mechanism movably connected to a support and a supported body (described in Japanese Patent Application Laid-Open No. 10-8763). (E) There is a seismic isolation device developed by the present inventor that has a structure in which a guide member having a curved surface is mounted on a support, and the supported member is supported by a rolling element that can roll around an axis (Japanese Patent Publication No. Hei 6 (1994)). -74609). When these seismic isolation devices are actually used, a plurality of seismic isolation devices are arranged or overlapped between the support and the supported member according to the weight and shape of the supported member.

【０００３】[0003]

【発明が解決しようとする課題】前記した従来の技術の
うち、（イ）（ロ）の例では、被支持体の重量によって
免震性能が異なるため、重量が変わったとき積層ゴム、
ばね等を最適なものに合わせる必要があり、設計の自由
度が低い。一方、（ハ）（ニ）（ホ）の例では、転動体
を用いており、変位状態での復元力が被支持体の重量に
比例し、固有振動数は重量に無関係であり、長周期の地
震動に対しても効果的に免震を行なうことができ、設計
上の自由度が高いという特徴を有している。このうち
（ハ）（ニ）の例（以下ころタイプと略称する）は、転
動体として支持体と被支持体の間の上部レールと下部レ
ール間にころ又は球を介在せしめて免震装置としている
ので、例えば阪神淡路大震災クラスの地震動に対する免
震装置としては、全ストロークは約５００ｍｍとして一
本のレール全長として約２５０ｍｍで、地震動に安定的
に対応するためにはレール一対で合計長さ約５００ｍｍ
に選定すればよく、レールの長さは短くて済む。しかし
ながら、ころ又は球単独では積極的に減衰力が生じない
ので別途減衰力の付加装置を備える必要があり、更にこ
ろ又は球が脱落したり、上下に挟んだ凹状面にデッドロ
ック状態に陥ることがある。このため（ニ）の例は特殊
なリンク機構を設けてころの動きを制約することにして
おり、更にダンパー若しくはばね等の減衰装置又はころ
や球の動きを制約する特別な枠体等を付加したものもあ
る。一方（ホ）の例（以下車輪タイプと略称する）は、
転動体として支持体と被支持体の間に介在する一本の案
内部材のレールに転動可能な車軸回りに回動する車輪を
用いた免震装置としているので、車輪と車軸の摩擦が減
衰力として有効に作用するため、特別な減衰装置を必要
とせず構造が簡単であるが、レール全長は前記ころタイ
プの２倍すなわち阪神淡路大震災クラスの地震動に対し
所要の全ストロークは約５００ｍｍとして一本のレール
全長は約５００ｍｍで、地震動に安定的に対応するため
には一対で合計長さ約１０００ｍｍに選定する必要があ
り、前記ころタイプに比して装置が大型化するという課
題を有している。本発明は、前記ころタイプと同様の小
型でありながら前記車輪タイプと同様に摩擦を減衰力と
して有効に作用せしめることができ、被支持体の重量変
化に対し免震性能が変わらず、小型で減衰力の付加装置
を必要とせず、一般家庭品、ＯＡ機器、医療機器、美術
品等の器物の軽荷重用から、電算機、機械、建築物、橋
梁等の中乃至重荷重用まで、幅広く適応できる免震用転
動体及びこれを用いた免震装置を得ることを目的とす
る。Among the conventional techniques described above, in the examples (a) and (b), the seismic isolation performance differs depending on the weight of the supported member, so that when the weight changes, the laminated rubber,
It is necessary to adjust the spring and the like to the optimum one, and the degree of freedom in design is low. On the other hand, in the examples (c), (d), and (e), the rolling element is used, the restoring force in the displaced state is proportional to the weight of the supported member, the natural frequency is independent of the weight, and the long period Seismic isolation can be performed effectively even for earthquake motions, and the design flexibility is high. Among them, the examples (c) and (d) (hereinafter abbreviated as roller types) are used as rolling elements by interposing rollers or balls between the upper rail and the lower rail between the support and the supported body to form a seismic isolation device. For example, as a seismic isolation device for earthquake motion of the Hanshin-Awaji Great Earthquake class, the total stroke is about 500 mm and the total length of one rail is about 250 mm, and in order to stably respond to earthquake motion, the total length of one pair of rails is about 500mm
And the length of the rail is short. However, since the roller or ball alone does not actively generate damping force, it is necessary to separately provide an additional damping force adding device, and the roller or ball may fall off or fall into a deadlock state on the concave surface sandwiched vertically. There is. For this reason, in the example of (d), a special link mechanism is provided to restrict the movement of the rollers, and a damping device such as a damper or a spring or a special frame body that restricts the movement of the rollers or the ball is added. Some have done it. On the other hand, the example (e) (hereinafter abbreviated as wheel type)
As a rolling element, a seismic isolation device that uses wheels that rotate around an axle that can roll on the rail of a single guide member that is interposed between the support and the supported body reduces friction between the wheels and the axle. Since it works effectively as a force, it does not require a special damping device and has a simple structure. However, the total length of the rail is twice that of the roller type, that is, the required total stroke is about 500 mm for earthquake motion of the Hanshin-Awaji Great Earthquake class. The total length of the rails is about 500 mm, and it is necessary to select a pair of them with a total length of about 1000 mm in order to stably cope with seismic motion, and there is a problem that the device becomes larger than the roller type. ing. The present invention is capable of effectively acting friction as a damping force in the same manner as the wheel type while being as small as the roller type, and the seismic isolation performance does not change with respect to the change in weight of the supported body, and the size is small. It does not require an additional device for damping force, and can be used in a wide range of applications, from light loads for general household goods, OA equipment, medical equipment, fine arts, and other equipment to medium to heavy loads for computers, machines, buildings, bridges, etc. It is an object of the present invention to obtain a seismic isolation rolling element and a seismic isolation device using the same.

【０００４】[0004]

【課題を解決するための手段】本発明は、前記目的を達
成するために、請求項１の発明にあっては、対向する上
部及び下部案内部材間に介在し転動可能な免震用転動体
において、軸芯回りに円筒状中空部をもった円筒体を該
軸芯又は該中空部内において該軸芯に平行する線を含む
平面に沿って複数個に分割し境界面をそれぞれ僅かに切
除し芯部に円弧状面をもった断面略扇形セグメント部の
該複数個を組合わせた本体部材と、前記円弧状面に嵌合
し少なくとも１個の僅かな切れ目又は軟質部分を有する
中抜き円筒状軸受けと該軸受けに装着された軸と、組付
け部材とを備え、前記軸受けの周面に前記各セグメント
部をそれぞれ隣接配列して前記組付け部材によって該各
セグメント部外周面が同径の円弧面上にあるように組付
け、前記本体部材は前記軸受けを介して前記軸回りに回
動可能とした免震用転動体により解決した。請求項２の
発明にあっては、請求項１に記載の免震用転動体におい
て、それぞれ単体で形成された各セグメント部を組付け
部材により組付けた免震用転動体とすることができる。
請求項３の発明にあっては、軸受けを廃し直接軸と又は
軸に固着された切れ目を有しない軸受けと本体部材の各
セグメント部の円弧状面とを摺動可能とした請求項１又
は２に記載の免震用転動体とすることができる。請求項
４の発明にあっては、組付け部材として各セグメント部
の外表面に合わせて嵌着可能な薄肉筒状体の表面材を用
いた請求項１〜３のいずれかに記載の免震用転動体とす
ることができる。請求項５の発明にあっては、表面材端
部をセグメント部端部より突出させ該セグメント部端面
及び表面材内側とで形成される空間に外周及び内周にシ
ール材が装着された端縁部材を圧入することにより該空
間の軸受け及び軸回りを密封可能とした請求項４に記載
の免震用転動体とすることができる。請求項６の発明に
あっては、組付け部材として各セグメント部端部よりの
張出し縁部又は各セグメント部端部の周方向に刻まれた
溝部に圧入可能で該セグメント部表面より突出しない高
さで弾力を有する締付具を用いた請求項１〜５のいずれ
かに記載の免震用転動体とすることができる。請求項７
の発明にあっては、組付け部材として各セグメント部の
隣接する境界面同士を組合わせ該各セグメント部表面に
刳られた座に突出しない高さで軸芯方向に対し直角の複
数の固着具を用いた請求項１〜５のいずれかに記載の免
震用転動体とすることができる。請求項８の発明にあっ
ては、請求項１〜７のいずれかに記載の免震用転動体に
おいて、セグメント部として断面形状を上下方向がこれ
と垂直な左右方向より短寸で該上下方向及び左右方向対
称の略鍋底形湾曲面で形成された筒状体を上下対称に二
分割し境界面をそれぞれ僅かに切除し芯部に円弧状面を
もった単位ユニット一対の向合わせの組合わせ、又は前
記単位ユニットを軸芯方向に直列配設した連設ユニット
と該単位ユニットとを隣接する各ユニットの継ぎ目が重
ならないように向合わせての組合わせとした免震用転動
体とすることができる。According to the present invention, in order to achieve the above object, according to the first aspect of the present invention, there is provided a seismic isolation rolling roll interposed between opposing upper and lower guide members. In the moving body, a cylindrical body having a cylindrical hollow portion around the axis is divided into a plurality of pieces along the axis or a plane including a line parallel to the axis in the hollow portion, and each boundary surface is slightly cut off. A main body member formed by combining a plurality of segments each having a substantially fan-shaped section with a core portion having an arcuate surface; and a hollow cylinder having at least one slight cut or soft portion fitted to the arcuate surface. A bearing mounted on the bearing, and an assembling member, wherein the respective segment portions are arranged adjacent to each other on a peripheral surface of the bearing, and the outer peripheral surfaces of the respective segment portions have the same diameter by the assembling member. Assemble so that it is on the arc surface, and the main body member It was solved by seismic isolation for the rolling elements that is rotatable on the axis through the bearings. According to the second aspect of the present invention, in the seismic isolation rolling element according to the first aspect, it is possible to provide a seismic isolation rolling element in which each of the segments formed individually is assembled by an assembling member. .
According to the third aspect of the present invention, the bearing is eliminated, and the direct shaft or the unfixed bearing fixed to the shaft and the arc-shaped surface of each segment of the main body member can be slid. The rolling element for seismic isolation described in (1) can be used. In the invention according to claim 4, the seismic isolation according to any one of claims 1 to 3, wherein a surface material of a thin-walled cylindrical body that can be fitted to an outer surface of each segment portion is used as an assembling member. Rolling element. According to the fifth aspect of the present invention, the edge is formed by projecting the end portion of the surface material from the end portion of the segment portion, and the sealing material is mounted on the outer periphery and the inner periphery in the space defined by the end surface of the segment portion and the inside of the surface material. By press-fitting the member, it is possible to provide the seismic isolation rolling element according to claim 4, wherein the bearing and the periphery of the space can be sealed. According to the invention of claim 6, a height that can be press-fitted into an overhanging edge from each segment end or a groove cut in the circumferential direction of each segment end as an assembly member and does not protrude from the surface of the segment. The rolling element for seismic isolation according to any one of claims 1 to 5 using an elastic fastening tool can be provided. Claim 7
In the invention according to the invention, as a mounting member, a plurality of fasteners which are formed by combining adjacent boundary surfaces of the respective segment portions with each other and which are perpendicular to the axial direction at a height which does not protrude into a seat formed on the surface of each of the segment portions. The seismic isolation rolling element according to any one of claims 1 to 5, wherein According to an eighth aspect of the present invention, in the seismic isolation rolling element according to any one of the first to seventh aspects, the cross-sectional shape of the segment portion is shorter in the vertical direction than in the horizontal direction perpendicular to the vertical direction. And a cylindrical body formed of a substantially pan-bottomed curved surface that is symmetrical in the left-right direction, divided vertically into two parts, the boundary surfaces are slightly cut off, and the core unit has an arc-shaped surface. Or a seismic isolation rolling element in which a continuous unit in which the unit units are arranged in series in the axial direction and the unit unit are combined so that seams of adjacent units do not overlap with each other. Can be.

【０００５】請求項９の発明にあっては、支持体と被支
持体間に介在して装着され、前記支持体側に固設され振
動域の中央部が最低部分をなす凹状の下部案内部材と、
前記被支持体側に固設され振動域の中央部が最高部分を
なす凹状の前記下部案内部材に向合わせて配設された上
部案内部材と、前記各案内部材に装着された請求項１〜
８のいずれかに記載の免震用転動体と、軸を固着する支
持部材とを備え、地震動により前記転動体の本体部材が
前記軸回りに回動しつつ前記各案内部材に沿って転動し
該各軸は前記支持部材と共に揺動可能とされて前記被支
持体を一方向の免震可能とした免震装置により解決し
た。請求項１０の発明にあっては、支持体と被支持体間
に介在して装着され、前記支持体側に固設された表面平
坦な下部案内部材と、前記被支持体側に固設され前記下
部案内部材に向合わせて配設された表面平坦な上部案内
部材と、前記各案内部材に装着された請求項８に記載の
免震用転動体と、軸を固着する支持部材とを備え、地震
動により前記転動体の本体部材が前記軸回りに半回転を
超えない範囲で回動しつつ前記各案内部材に沿って転動
し該各軸は前記支持部材と共に揺動可能とされて前記被
支持体を一方向の免震可能とした免震装置により解決し
た。請求項１１の発明にあっては、支持部材は一対の剛
性材で基部の上下左右対称位置４隅部に転動体の軸と平
行な支軸をもった回動自在な小車輪を有し、前記各基部
中央部に前記転動体の軸両端部が固着され、前記各小車
輪は各案内部材に沿って転動可能に装着され、地震動に
より前記転動体の本体部材が前記軸回りに回動しつつ前
記各案内部材に沿って転動し該軸は前記支持部材と共に
揺動可能とされている請求項９又は１０に記載の免震装
置とすることができる。請求項１２の発明にあっては、
支持部材は各一対の中部リンク、上部リンク及び下部リ
ンクを有し、中部リンク中央部に軸両端部が固着され該
中部リンクの等距離上下端部にピンによって同じ長さの
上部リンク及び下部リンクが回動自在に連結され、上部
リンク上端部が上部案内部材の最高部分側面及び下部リ
ンク下端部が下部案内部材の最低部分側面にピンによっ
て回動自在に連結され、地震動により転動体の本体部材
が前記軸回りに回動しつつ前記各案内部材に沿って転動
し該軸は前記支持部材と共に揺動し、前記軸の軸芯は前
記各案内部材のピン軸芯の中点に常時維持可能とされて
いる請求項９〜１１のいずれかに記載の免震装置とする
ことができる。請求項１３の発明にあっては、支持部材
は複数の剛性材で、平行に間隔をおいた複数の転動体の
少なくとも軸両端部が前記支持部材に固着され、地震動
により前記転動体の各本体部材が前記各軸回りに回動し
つつ各案内部材に沿って転動し該各軸は前記支持部材と
共に揺動可能とされている請求項９又は１０に記載の免
震装置とすることができる。請求項１４の発明にあって
は、請求項１３に記載の免震装置において、下部案内部
材は長手方向に離隔又は密接し複数区分され該各区分の
振動域の中央部が最低部分であって両端部に向って徐々
に高くなる凹状の形状に形成され、上部案内部材は長手
方向に離隔又は密接し複数区分され該各区分の振動域の
中央部が最高部分であって両端部に向って徐々に低くな
る凹状の形状に形成され、前記各区分毎に転動体がそれ
ぞれ装着されている免震装置とすることができる。請求
項１５の発明にあっては、請求項１３又は１４に記載の
免震装置において、各一対の中部リンク、上部リンク及
び下部リンクよりなるリンク部を有し、各区分毎に装着
された転動体の各軸が固着された剛性材の支持部材の一
点がピンによって前記中部リンク中央部に回動自在に連
結され、前記中部リンクの等距離上下端部にピンによっ
て同じ長さの上部リンク及び下部リンクが回動自在に連
結され、前記上部リンク上端部が上部案内部材側面にお
いて且つ前記下部リンク下端部が下部案内部材側面にお
いてそれぞれ前記支持部材の一点の上下対称位置にピン
によって回動自在に連結され、地震動により前記転動体
の各本体部材が前記各軸回りに回動しつつ前記各区分毎
の各案内部材に沿って転動し該各軸は前記支持部材と共
に揺動し、前記支持部材の一点は前記各案内部材のピン
軸芯の中点に常時維持可能とされていること免震装置と
することができる。請求項１６の発明にあっては、請求
項９〜１５のいずれかに記載の免震装置の一対を下部案
内部材及び上部案内部材の転動体の本体部材転動方向を
互いに直角になるよう支持体上に上下二段重ねして固着
し、前記下段下部案内部材を前記支持体側に固設し前記
上段上部案内部材を被支持体側に固設し、直交する二方
向成分を含む地震動により前記各本体部材がそれぞれ各
軸回りに回動しつつ前記各案内部材に沿って転動し該各
軸は支持部材と共に揺動し、前記被支持体を多方向の免
震可能とした免震装置とすることができる。According to a ninth aspect of the present invention, there is provided a concave lower guide member which is mounted between a support and a supported body, is fixed to the support, and has a center portion of a vibration region forming a minimum portion. ,
An upper guide member fixed to the supported member side and arranged to face the concave lower guide member having a central portion of a vibration region forming a highest portion, and mounted on each of the guide members.
8. The seismic isolation rolling element according to any one of 8 and a support member for fixing a shaft, wherein the main body member of the rolling element rolls along the guide members while rotating around the axis by seismic motion. The problem is solved by a seismic isolation device in which each of the shafts is swingable together with the support member so that the supported member can be isolated in one direction. According to the invention of claim 10, the lower guide member, which is mounted between the support and the supported body and fixed to the support side and has a flat surface, and the lower guide member fixed to the supported body side. 9. An upper guide member having a flat surface arranged in opposition to the guide member, the seismic isolation rolling element according to claim 8 mounted on each of the guide members, and a support member for fixing a shaft. As a result, the main body member of the rolling element rolls along each of the guide members while rotating around the axis within a range not exceeding a half turn, and each of the shafts is swingable together with the support member so that the supported member is supported. The problem was solved by a seismic isolation device that made the body unidirectional. According to the invention of claim 11, the support member has a pair of rigid materials and has rotatable small wheels having support shafts parallel to the axis of the rolling element at the four corners of the base, which are symmetrical in the vertical and horizontal directions, Both ends of the shaft of the rolling element are fixed to the center of each base, and the small wheels are rotatably mounted along the guide members, and the main body member of the rolling element rotates around the axis by seismic motion. The seismic isolation device according to claim 9 or 10, wherein the shaft rolls along each of the guide members while the shaft is swingable together with the support member. In the invention of claim 12,
The support member has a pair of middle links, an upper link and a lower link. Both ends of the shaft are fixed to the center of the middle link, and upper and lower links having the same length by pins at upper and lower ends of the middle link at equal distances. Are rotatably connected, the upper end of the upper link is rotatably connected to the highest side of the upper guide member and the lower end of the lower link to the lowest side of the lower guide by a pin, and the main body member of the rolling element is moved by the seismic motion. Is rolled along each of the guide members while rotating around the axis, the shaft swings together with the support member, and the axis of the shaft is always maintained at the midpoint of the pin axis of each of the guide members. The seismic isolation device according to any one of claims 9 to 11 which is enabled can be provided. In the invention according to claim 13, the support member is composed of a plurality of rigid members, and at least both ends of the plurality of parallelly spaced rolling elements are fixed to the support member, and each body of the rolling elements is caused by seismic motion. The seismic isolation device according to claim 9 or 10, wherein a member rolls along each guide member while rotating about each of the axes, and each of the axes is swingable together with the support member. it can. According to a fourteenth aspect of the present invention, in the seismic isolator according to the thirteenth aspect, the lower guide member is separated or closely spaced in a longitudinal direction and is divided into a plurality of sections, and a center portion of a vibration region of each section is a minimum part. The upper guide member is formed in a concave shape that gradually increases toward both ends, and the upper guide member is separated or closely spaced in the longitudinal direction and is divided into a plurality of sections. The seismic isolation device can be a seismic isolation device that is formed in a concave shape that is gradually lowered, and is provided with rolling elements for each of the sections. According to a fifteenth aspect of the present invention, in the seismic isolation device according to the thirteenth or fourteenth aspect, the seismic isolation device includes a pair of central links, a link section including an upper link and a lower link, and is mounted on each section. One point of a support member of a rigid material to which each axis of the moving body is fixed is rotatably connected to the center portion of the middle link by a pin, and an upper link having the same length by a pin at upper and lower ends of the middle link at equal distances. A lower link is rotatably connected, and an upper end of the upper link is on a side of the upper guide member and a lower end of the lower link is on a side of the lower guide member so as to be rotatable by a pin at a vertically symmetric position of one point of the support member. Connected, each body member of the rolling element is rolled along each guide member for each section while being rotated around each axis by the seismic motion, and each shaft swings with the support member, One point of the support member may be a seismic isolation device that is always possible keep the midpoint of the pin axis of each guide member. According to a sixteenth aspect of the present invention, the pair of seismic isolation devices according to any one of the ninth to fifteenth aspects is supported such that the rolling directions of the main body members of the rolling elements of the lower guide member and the upper guide member are perpendicular to each other. The lower upper guide member is fixed to the support side and the upper upper guide member is fixed to the supported body side, and each of the upper and lower guide members is fixed to the supported body side by seismic motion including orthogonal two-way components. A seismic isolation device in which a main body member rolls along each of the guide members while rotating around each axis, and each axis swings with a support member, so that the supported body can be isolated in multiple directions. can do.

【０００６】本発明の各構成要素のうち、共通するもの
について説明する。支持体としては、免震装置が固定で
きるものであればよく、例えば、床・基礎若しくはこれ
らの上の定着物・固着物又は構造物等がある。被支持体
としては、特に限定はなく例えば一般家庭品、ＯＡ機
器、医療機器、美術品の軽量物から、戸建住宅、集合住
宅、ビル、電算機、機械・装置、橋梁等の中量又は重量
物が対象となる。案内部材としては、転動体が転動する
ために表面が凹状の形状をもった例えばレール状体や面
状体等があり、材質としては金属、堅木、硬質プラスチ
ック、ＦＲＰ、ガラス、セラミック等が用い得るが、最
も汎用されるのは炭素鋼又はステンレス鋼で、被支持体
の重量や使用条件によって材質及びサイズが選択され
る。表面の凹状の形状は、特に限定はないが、所望のば
ね常数を得るため鉛直切断面を地震非作動時の基準状態
で振動域の中央部が最低又は最高部分をなし通常対称形
状の例えば円弧、放物線、双曲線、直線等の単独又は組
み合わせで曲率一定又は可変としたものが用いられ、復
元力の特性としては、例えば特公平６−７４６０９号公
報記載のもの等が用いられる。又転動体の形状を変えて
その組合わせによっては表面平坦の場合もある。ここ
で、振動域とは転動体が地震動により転動する領域をさ
し、振動域のいずれかの端部に続いて外れた位置に地震
動が発生しない場合予め転動体を静止可能に支持する静
止域例えばくぼみ等を設け、地震動発生時に転動体が中
央部に移動可能とする案内部材表面の構成とすることも
ある。更に案内部材の両端部に例えばゴム、ばね材、急
斜面、急な湾曲面等よりなるストッパーを形成するのが
好ましい。転動体の本体部材、軸及び連結材の材質とし
ては、金属、セラミック又は硬質プラスチック等が用い
得るが、最も汎用されるのは炭素鋼又はステンレス鋼で
あり、密閉構造の場合には鋳鉄が用いられ、軽荷重には
硬質プラスチックが用いられ、被支持体の重量や使用条
件によって材質及びサイズが選択される。軸受けとして
は、一般的な軸受け材料が用い得るが無給油軸受けとす
るのが好ましく、ナイロンや弗素樹脂等のプラスチッ
ク、含油材、固体潤滑材等の減摩材を介在したり、他と
接触を生じても減摩作用が得られるように本体部材又は
軸の少なくとも表面に減摩材を被覆したりしてもよい。
又軽荷重の場合には別体の軸受け材を介在させずに本体
部材と軸とを直接摺動可能としてもよい。更に本体部材
及び軸の摺動部分を密封構造とし内部に潤滑材を充填す
ることにより減摩作用が得られるようにしてもよい。組
付け部材としては、用途に応じ例えばＣ形同心止め輪、
輪ゴム、コイルばね等の弾性を有する部材の締付具が用
いられ、Ｃ形同心止め輪は汎用向けであり、輪ゴム、コ
イルばねは軽荷重向けである。ボルト、ナット、座金又
はばね材等の固着具を用いたものは中又は重荷重向けで
ある。又薄肉筒状体の表面部材を用いたものは汎用向け
である。いずれもそれぞれ単独使用又は併用としてもよ
い。The common components among the components of the present invention will be described. The support may be any as long as the seismic isolation device can be fixed, and examples thereof include a floor, a foundation, and a fixed material, a fixed material, or a structure thereon. The supported body is not particularly limited, and includes, for example, general household goods, OA equipment, medical equipment, lightweight objects such as art, detached houses, apartment houses, buildings, computers, machines and devices, and medium amounts of bridges or the like. Heavy objects are targeted. The guide member includes, for example, a rail-shaped body or a planar body having a concave surface in order for the rolling element to roll, and the material is metal, hardwood, hard plastic, FRP, glass, ceramic, or the like. Although most commonly used is carbon steel or stainless steel, the material and size are selected according to the weight of the supported member and the use conditions. The concave shape of the surface is not particularly limited, but in order to obtain a desired spring constant, the center of the vibration region forms the lowest or highest part in the reference state when the earthquake is not operated to obtain the desired spring constant, and is usually a symmetrical shape, for example, an arc , Parabolic, hyperbolic, straight lines, etc., which have a constant or variable curvature alone or in combination, and the characteristics of the restoring force include, for example, those described in Japanese Patent Publication No. 6-74609. The surface of the rolling element may be flat depending on the combination of the rolling elements. Here, the vibration region means a region where the rolling element rolls due to the seismic motion. If no seismic motion occurs at a position deviating from any end of the vibration region, the rolling member is previously supported so as to be able to stop. A region such as a depression may be provided, and the surface of the guide member may be configured so that the rolling element can move to the center when an earthquake motion occurs. Further, it is preferable to form stoppers made of, for example, rubber, a spring material, a steep slope, a steeply curved surface, or the like at both ends of the guide member. As the material of the main body member, the shaft and the connecting member of the rolling element, metal, ceramic or hard plastic can be used, but most commonly used is carbon steel or stainless steel, and in the case of a closed structure, cast iron is used. Hard plastic is used for light loads, and the material and size are selected according to the weight of the supported member and the conditions of use. As the bearing, a general bearing material can be used, but it is preferable to use an oil-free bearing.Plastics such as nylon and fluorine resin, an oil-impregnated material, a lubricating material such as a solid lubricating material, etc. At least a surface of the main body member or the shaft may be coated with an anti-friction material so that an anti-friction effect is obtained even if it occurs.
In the case of a light load, the main body member and the shaft may be slidable directly without interposing a separate bearing member. Further, the sliding portion of the main body member and the shaft may have a hermetically sealed structure, and a lubricating material may be filled in the inside, so that an anti-friction effect may be obtained. Depending on the application, for example, a C-shaped concentric retaining ring
A tightening tool made of an elastic member such as a rubber band or a coil spring is used. The C-shaped concentric retaining ring is for general use, and the rubber band and the coil spring are for light load. Those using fasteners such as bolts, nuts, washers or spring materials are intended for medium or heavy loads. The one using the surface member of the thin cylindrical body is for general use. Each of them may be used alone or in combination.

【０００７】[0007]

【発明の実施の形態】本発明の実施の形態を図面に基づ
き説明する。図１は、本発明の転動体の第１例を示し
（ａ）組立状態で右半分は側面図で左半分は縦断面図、
（ｂ）組立正面図、（ｃ）本体部材の一部平面図、
（ｄ）本体部材の一部分解側面図、（ｅ）（ｄ）の正面
図、（ｆ）軸受け材の側面図、（ｇ）軸受け材の正面図
である。図２は、本発明の転動体の第２例を示し（ａ）
組立状態で右半分は側面図で左半分は縦断面図、（ｂ）
Ａ・Ａ線断面図、（ｃ）本体部材の一部分解側面図、
（ｄ）（ｃ）の一部分解正面図、（ｅ）軸受け材の側面
図、（ｆ）軸受け材の正面図、（ｇ）端面部材の側面
図、（ｈ）端面部材の正面図、（ｉ）締付け材の正断面
図で右半分を一部省略してある。図３は、本発明の転動
体の第３例を示し（ａ）組立状態で右半分は側面図で左
半分は縦断面図、（ｂ）Ｂ・Ｂ線断面図である。図４
は、本発明の転動体の第４例を示し（ａ）組立側面図、
（ｂ）組立正面図、（ｃ）本体部材の一部分解側面図、
（ｄ）本体部材の一部分解正面図、（ｅ）軸受け材の側
面図、（ｆ）軸受け材の正面図である。図５は、図４
（ａ）の拡大したＣ・Ｃ線断面図である。図６は、基準
状態にある本発明の転動体を直交する二段重ねとした免
震装置の第１例を示し（ａ）上段の上部案内部材を除い
た平面図、（ｂ）正面図である。図７は、図６（ｂ）に
示す免震装置第１例の一部の地震発生時の状態を示す正
面図である。図８は、基準状態にある本発明の免震装置
の第２例を示し（ａ）左半分は上部案内部材を除いた平
面図で右半分はＤ・Ｄ線断面の平面図、（ｂ）正面図で
ある。図９は、基準状態にある本発明の免震装置の第３
例を示し（ａ）平面図、（ｂ）正面図である。図１０
は、基準状態にある本発明の免震装置の第４例を示し
（ａ）上段の上部案内部材を除いた平面図、（ｂ）正面
図である。図１１は、転動体の荷重の掛かり方を模式的
に示し（ａ）本発明の第１例正面図、（ｂ）（ｃ）本発
明の第２例正面図、（ｄ）従来例ころタイプの正面図、
（ｅ）従来例車輪タイプの正面図である。図１２は、本
発明の転動体の第５例を示し（ａ）組立状態の縦断面
図、（ｂ）組立正面図である。又本転動体を用いた免震
装置の第５例の略図を示し（ｃ）基準状態の正面図、
（ｄ）地震発生時の正面図である。図１３は、本発明の
転動体の他例を説明する正面視の模式的断面図で、
（ａ）セグメント部の変形例、（ｂ）転動体の第１例、
（ｃ）乃至（ｆ）転動体の他の変形例である。先ず図１
乃至５により本発明の転動体の第１例乃至第４例を説明
し、図６乃至１０により本発明の免震装置の第１例乃至
第４例を説明し、図１２により本発明の転動体の第５例
及び免震装置の第５例を説明する。又図１３によりセグ
メント部と軸回りの変形例を説明する。各図中において
複数個存在する構成要素は一部符号記載を省略し、各例
において共通する構成要素は同一符号を用い詳細説明は
省略する。又各図について、正面方向から視て上下、左
右、前後として説明する。Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a first example of a rolling element of the present invention. (A) In an assembled state, the right half is a side view, the left half is a longitudinal sectional view,
(B) an assembly front view, (c) a partial plan view of a main body member,
(D) A partial exploded side view of a main body member, (e) a front view of (d), (f) a side view of a bearing material, and (g) a front view of a bearing material. FIG. 2 shows a second example of the rolling element of the present invention (a).
In the assembled state, the right half is a side view and the left half is a vertical sectional view, (b)
A-A line sectional view, (c) a partially exploded side view of a main body member,
(D) A partial exploded front view of (c), (e) a side view of the bearing material, (f) a front view of the bearing material, (g) a side view of the end member, (h) a front view of the end member, (i) ) The right half is partially omitted in the front sectional view of the fastening member. 3A and 3B show a third example of the rolling element of the present invention, in which (a) the right half is a side view, the left half is a longitudinal sectional view, and (b) is a sectional view taken along line BB in an assembled state. FIG.
Shows a fourth example of the rolling element of the present invention, (a) assembly side view,
(B) an assembly front view, (c) a partially exploded side view of a main body member,
(D) is a partially exploded front view of the main body member, (e) is a side view of the bearing material, and (f) is a front view of the bearing material. FIG.
It is the CC sectional view taken on the line of (a). FIGS. 6A and 6B show a first example of a seismic isolation device in which rolling elements of the present invention in a reference state are stacked in a two-stage configuration orthogonal to each other, (a) a plan view excluding an upper guide member in an upper stage, and (b) a front view. is there. FIG. 7 is a front view showing a part of the first example of the seismic isolation device shown in FIG. 6B when an earthquake occurs. FIG. 8 shows a second example of the seismic isolation device of the present invention in a reference state. (A) The left half is a plan view excluding an upper guide member, and the right half is a plan view of a cross section taken along line DD. It is a front view. FIG. 9 shows a third example of the seismic isolation device of the present invention in a reference state.
It is an example showing (a) a plan view and (b) a front view. FIG.
FIG. 7A is a plan view of a fourth example of the seismic isolation device of the present invention in a reference state, in which (a) is a plan view excluding an upper guide member, and (b) is a front view. FIG. 11 schematically shows how a load is applied to a rolling element. (A) Front view of a first example of the present invention, (b) (c) Front view of a second example of the present invention, (d) Conventional roller type Front view of the
(E) It is a front view of the conventional example wheel type. FIG. 12 shows a fifth example of the rolling element of the present invention, in which (a) is a longitudinal sectional view in an assembled state, and (b) is an assembled front view. Also, a schematic view of a fifth example of a seismic isolation device using the present rolling elements is shown (c) a front view in a reference state,
(D) It is a front view at the time of an earthquake. FIG. 13 is a schematic cross-sectional view in front view illustrating another example of the rolling element of the present invention.
(A) a modified example of the segment portion, (b) a first example of the rolling element,
(C) to (f) are other modified examples of the rolling elements. First, FIG.
First to fourth examples of the rolling element of the present invention will be described with reference to FIGS. 5 to 5, first to fourth examples of the seismic isolation device of the present invention will be described with reference to FIGS. A fifth example of the moving object and a fifth example of the seismic isolation device will be described. Further, a modified example around the segment portion and the axis will be described with reference to FIG. In each drawing, a plurality of components are partially omitted from the description of the components, and components common to the respective examples are denoted by the same reference numerals, and detailed description is omitted. Each figure will be described as up and down, left and right, and front and back when viewed from the front.

【０００８】図１に示す本発明第１例の転動体１は、本
体部材１１、軸受け１２、軸１３及び組付け部材として
締付具１４を有している。先ず図１（ｃ）乃至（ｇ）に
より転動体１の各構成要素を説明する。本体部材１１
は、外径Ｄで内径Ｄ３ の中空部をもった円筒体を軸芯
Ｑを含む平面に沿って２分割し水平面１１ｅを僅かの高
さｈだけ切除し芯部に内径Ｄ３の円弧状面１１ｄをもっ
た断面略扇形のセグメント部１１ａと、セグメント部１
１ａの左右端部に張出し外径Ｄより僅かに小さい外径Ｄ
１ の左右一対の縁部１１ｂと、縁部１１ｂの中間に刻
まれた外径Ｄ１ より僅かに小さい外径Ｄ２ の左右一対
の溝部１１ｃとを有し上下一対の組合わせである。軸受
け１２は、中抜き円筒状で外径Ｄ３ （公差プラス例え
ば通常外径２３ｍｍで＋０．０８０〜０．０４５ｍｍ程
度）及び内径ｄの無給油軸受け（例えばオイレス工業株
式会社製オイレスドライメット）を用い、軸芯方向から
みて前後直線状に連続して幅２ｈの僅かな切れ目１２ａ
が穿設されている。この幅は必ずしも２ｈでなくてもよ
いが少なくとも１個は必要である。軸１３は、軸受け１
２に摺動可能な外径ｄ（公差マイナス）をもった円筒状
シャフトである。組付け部材の締付具１４は、ここでは
Ｃ形同心止め輪が用いられ、外径Ｄ２の左右一対の溝部
１１ｃに圧入可能で外径Ｄより僅かに小さい寸法のもの
が選択され、用途によっては輪ゴム、コイルばね等の弾
力を有するものであってもよい。 次に、図１（ａ）
（ｂ）により転動体１の組立てについて説明する。軸１
３に軸受け１２を本体部材１１の前後幅に合わせた個数
嵌着し、一方（例えば前方、図１（ａ）上では左側に示
す）の本体部材１１の一対を水平面１１ｅを向合わせて
対称位置におき、上下の円弧状面１１ｄによって形成さ
れる円周面間に軸受け１２前後２個を挟込んだ後締付具
１４を溝部１１ｃに圧入して位置決めし、他方（例えば
後方、図１（ａ）上では右側に示す）の本体部材１１の
一対を同様にして隣合わせ位置において締付具１４を溝
部１１ｃに圧入して縁部１１ｂが軸１３前後に隣接する
ように位置決めし、双方の本体部材１１の水平面１１ｅ
が一線に揃う様に調整し各セグメント部１１ａ間の境界
を僅かな隙間２ｈに保持しつつ転動体１の組立てが完了
する。締付具１４はセグメント部１１ａ表面より突出し
ない高さである。隣接する縁部１１ｂの間にはワッシャ
（図示省略）を介在させると寸法誤差等を吸収可能であ
り好ましい。組立て後の転動体１は、各セグメント部１
１ａ外周面が同径の円弧面上にあるように組付けられ、
上下の本体部材１１には軸受け１２が圧入され一体であ
り、軸受け１２と軸１３とは摺動可能とされ、本体部材
１１は軸１３回りに回動可能である。A rolling element 1 according to a first embodiment of the present invention shown in FIG. 1 has a main body member 11, a bearing 12, a shaft 13, and a fastener 14 as an assembly member. First, each component of the rolling element 1 will be described with reference to FIGS. Body member 11
Is a cylindrical body having a hollow portion of the inner diameter D 3 at the outer diameter D slightly the height h of the bisected horizontal plane 11e along a plane including the shaft center Q excised arcuate inner diameter D 3 to the core A segment portion 11a having a substantially fan-shaped section having a surface 11d, and a segment portion 1
Outer diameter D slightly smaller than outer diameter D overhangs left and right ends of 1a
1 of a pair of right and left edge portions 11b, which is an intermediate in the carved upper and lower pair of combination and a pair of grooves 11c of the outer diameter D 1 slightly less than the outer diameter D 2 of the edge 11b. The bearing 12 is a hollow cylinder having an outer diameter D 3 (tolerance plus, for example, about +0.080 to 0.045 mm at a normal outer diameter of 23 mm) and an oil-free bearing having an inner diameter d (for example, OILES DRYMET manufactured by OILES KOGYO CO., LTD.). Used, a slight cut 12a having a width of 2h continuously in a front-rear straight line as viewed from the axis direction
Are drilled. This width does not necessarily have to be 2h, but at least one is required. The shaft 13 is a bearing 1
2 is a cylindrical shaft having an outer diameter d (tolerance minus) slidable. Fasteners 14 of the member assembly is used herein is C-shaped concentric snap ring, of slightly smaller than the outer diameter D can press-fitted into the pair of grooves 11c of the outer diameter D 2 that is selected, the application Some may have elasticity such as rubber bands and coil springs. Next, FIG.
The assembly of the rolling element 1 will be described with reference to FIG. Axis 1
The number of the bearings 12 is fitted to the number 3 so as to match the front-rear width of the main body member 11, and one pair of the main body members 11 (for example, shown on the left side in FIG. 1A) is symmetrically positioned with the horizontal plane 11e facing the horizontal plane 11e. After the two front and rear bearings 12 are sandwiched between the circumferential surfaces formed by the upper and lower arc-shaped surfaces 11d, the fasteners 14 are press-fitted into the grooves 11c and positioned, and the other (for example, rearward, FIG. a) A pair of main body members 11 (shown on the right side in the above) is similarly pressed into the groove portion 11c at the adjacent position to position the edge portion 11b so that the edge portion 11b is adjacent to the front and rear of the shaft 13. Horizontal surface 11e of member 11
Are adjusted so as to be aligned, and the assembly of the rolling element 1 is completed while maintaining the boundary between the respective segment portions 11a in the slight gap 2h. The fastener 14 has a height that does not protrude from the surface of the segment portion 11a. It is preferable to interpose a washer (not shown) between the adjacent edge portions 11b because a dimensional error or the like can be absorbed. The rolling element 1 after assembling includes each segment portion 1
1a is assembled so that the outer peripheral surface is on an arc surface of the same diameter,
A bearing 12 is press-fitted into the upper and lower main body members 11 to be integral therewith. The bearing 12 and the shaft 13 are slidable, and the main body member 11 is rotatable around the shaft 13.

【０００９】図２に示す本発明第２例の転動体２は、本
体部材２１、端縁部材２２、軸受け１２、軸１３、組付
け部材として締付具２４と表面材２５を有している。先
ず転動体２の各構成要素を説明する。組付け部材とし
て、締付具２４はここでは内径Ｄ２ 、外径Ｄ１ のコイ
ルばねをリング状に巻回して後述する前後一対の溝部２
１ｃに圧入可能な寸法のものが選択されているが、用途
によっては前記締付具１４と同様のＣ形同心止め輪又は
輪ゴムであってもよい。又表面材２５は外径Ｄで内径Ｄ
１ の薄肉円筒状体である。 図２（ａ）乃至（ｄ）に
示す本体部材２１は、外径Ｄ１ で内径Ｄ３ の中空部を
もった円筒体を軸芯Ｑを含み４分割し水平面２１ｆ及び
垂直面２１ｇを僅かに高さ及び幅ｈだけ切除し芯部に内
径Ｄ３ の円弧状面２１ｄをもった断面略扇状のセグメ
ント部２１ａと、セグメント部２１ａの前後端部に張出
している外径Ｄ１ の前後一対の縁部２１ｂと、セグメ
ント部２１ａと縁部２１ｂの中間に刻まれた外径Ｄ１
より小さい外径Ｄ２ の前後一対の溝部２１ｃとを有
し、４個のセグメント部２１ａの組合わせをユニットと
しこの前後２ユニットが１個の表面材２５内に装着され
るが表面材２５の軸方向長さは隣合わせに連設されるセ
グメント部２１ａ前後ユニットの軸方向合計長さより長
く取られている。ここで、セグメント部２１ａと軸受け
１２の前後軸方向長さの比は２対１としてあり、全体で
軸受け１２が４個用いられている。又縁部２１ｂ及び溝
部２１ｃはセグメント部２１ａの端部表面を周方向に刻
むことによっても得られる。図２（ｇ）（ｈ）に示す端
縁部材２２は、表面材２５の外径Ｄより小さく内径Ｄ１
より僅かに大きい外径Ｄ６ の円盤状の蓋２２ａと、内
径Ｄ１ より僅かに小さい外径Ｄ５ のフランジ２２ｂ
と、蓋２２ａとフランジ２２ｂの間に外径Ｄ ５ より僅
かに小さい外径Ｄ４ の溝部２２ｃと、蓋２２ａ及びフ
ランジ２２ｂには同心の内径ｄの通し孔２２ｅ及び２２
ｆが穿設され、溝部２２ｃには通し孔２２ｅ及び２２ｆ
と同心の内径ｄより僅かに大きい内径Ｄ７ の凹部２２
ｇが設けられいる。溝部２２ｃ及び凹部２２ｇに大小２
種のＯリング２２ｈ及び２２ｉがそれぞれ装着可能とさ
れている。次に、図２（ａ）（ｂ）により転動体２の組
立てについて説明する。軸１３に軸受け１２を本体部材
２１の前後幅に合わせた個数嵌着し、一方（例えば前
方、図２（ａ）上では左側に示す）のセグメント部２１
ａの４個を水平面２１ｆ及び垂直面２１ｇを向合わせて
（ｂ）に示す正面図において上下左右対称位置におき各
円弧状面２１ｄによって形成される円周面間に軸受け１
２（本例では前後２個）を挟込みんだ後一対の締付具２
４を前後一対の溝部２１ｃに緊張状態で挿入して位置決
めし、他方（例えば後方、図２（ａ）上では右側に示
す）のセグメント部２１ａの４個を同様の位置において
締付具２４を溝部２１ｃに緊張状態で挿入して隣接する
縁部２１ｂ同士が接触するよう位置決めし、双方（前
後）の水平面２１ｆ及び垂直面２１ｇがそれぞれ一線に
揃うように調整し、表面材２５を各セグメント部材２１
ａに嵌着する。最後に、セグメント部２１ａ前後端面及
び表面材２５内側とで形成される空間に溝部２２ｃ及び
凹部２２ｇにＯリング２２ｈ及び２２ｉが装着された端
縁部材２２を圧入することにより各セグメント部２１ａ
の境界を僅かな隙間２ｈに保持しつつ転動体２の組立て
が完了する。前後隣接するセグメント部２１ａ間にはワ
ッシャ（図示省略）を介在させるのが好ましい。ここ
で、Ｏリングに代えて他のシール材を用いることもでき
る。組立て後の転動体２は、各セグメント部２１ａ外周
面は同径の円弧面上にあるように組付けられ、本体部材
２１に軸受け１２が圧入され一体で、軸受け１２と軸１
３とは摺動可能で、本体部材２１は軸１３回りに回動可
能である。A rolling element 2 according to a second embodiment of the present invention shown in FIG.
Body member 21, edge member 22, bearing 12, shaft 13, assembly
It has a fastener 24 and a surface material 25 as fastening members. Destination
First, each component of the rolling element 2 will be described. As an assembly member
The fastening tool 24 has an inner diameter D here.2 , Outer diameter D1 Carp
And a pair of front and rear groove portions 2 to be described later.
The size that can be pressed into 1c is selected.
Depending on the C-shaped concentric retaining ring similar to the fastening tool 14 or
A rubber band may be used. The surface material 25 has an outer diameter D and an inner diameter D
1 Is a thin cylindrical body. 2 (a) to 2 (d)
The main body member 21 shown has an outer diameter D1 With inner diameter D3 The hollow part of
The cylindrical body with the axis Q is divided into four parts including the horizontal plane 21f and
21g of the vertical surface is slightly cut off by height and width h, and
Diameter D3 Of approximately fan-shaped section with an arc-shaped surface 21d
Parts 21a and the front and rear ends of the segment part 21a.
Outer diameter D1 And a pair of edges 21b,
Outer diameter D carved in the middle between the contact part 21a and the edge 21b1 
Smaller outer diameter D2 And a pair of grooves 21c before and after
And the combination of the four segment portions 21a is referred to as a unit.
Two units before and after this are mounted in one surface material 25.
However, the length of the surface material 25 in the axial direction is
Longer than the total length of the front and rear units in the axial direction
Well taken away. Here, the segment portion 21a and the bearing
The ratio of the length in the front-rear axial direction of 12 is set to 2: 1.
Four bearings 12 are used. Edge 21b and groove
The part 21c engraves the end surface of the segment part 21a in the circumferential direction.
Can also be obtained. Edges shown in FIGS. 2 (g) and 2 (h)
The edge member 22 has an inner diameter D smaller than the outer diameter D of the surface material 25.1
 Slightly larger outer diameter D6 Disk-shaped lid 22a
Diameter D1 Slightly smaller outer diameter D5 Flange 22b
And an outer diameter D between the lid 22a and the flange 22b. 5 Less
Crab small outer diameter D4 Groove 22c, lid 22a and
Through holes 22e and 22 of concentric inner diameter d are formed in the flange 22b.
f is drilled, and through holes 22e and 22f are formed in the groove 22c.
Inner diameter D slightly larger than inner diameter d concentric with7 Recess 22
g is provided. Large and small 2 in groove 22c and recess 22g
O-rings 22h and 22i can be attached
Have been. Next, as shown in FIGS.
The stand will be described. Bearing 13 on shaft 13 as main body member
21 fit into the front and rear width of one,
On the other hand, the segment portion 21 shown in FIG.
a with the horizontal plane 21f and the vertical plane 21g facing each other
In the front view shown in FIG.
Bearing 1 between circumferential surfaces formed by arc-shaped surfaces 21d
2 (in this example, two front and rear) and a pair of fasteners 2
4 is inserted into the pair of front and rear grooves 21c under tension and positioned.
And the other (for example, on the right side in FIG.
4) of the segment portions 21a of FIG.
The fastener 24 is inserted into the groove 21c in a tensioned state and is adjacent to the groove 21c.
Position the edges 21b so that they contact each other,
The horizontal plane 21f and the vertical plane 21g of (after) are each aligned.
Adjust so that the surface material 25 is
a. Finally, the front and rear end faces of the segment portion 21a
Groove 22c and the space formed by
End where O-rings 22h and 22i are attached to recess 22g
Each segment portion 21a is formed by press-fitting the edge member 22.
Of the rolling element 2 while maintaining the boundary of
Is completed. A waist is provided between the adjacent segment portions 21a.
It is preferable to interpose a washer (not shown). here
Therefore, other sealing materials can be used instead of the O-ring.
You. The rolling element 2 after assembling has an outer periphery of each segment portion 21a.
The surfaces are assembled so that they are on the same diameter arc surface, and the body member
The bearing 12 is press-fitted into the bearing 21 and integrally formed with the bearing 12 and the shaft 1.
3 is slidable, and the main body member 21 is rotatable around the axis 13.
Noh.

【００１０】図３に示す本発明第３例の転動体３は、本
体部材３１、端縁部材２２、軸受け１２、軸１３、組付
け部材として表面材３５を有している。組付け部材の表
面材３５は、前記表面材２５と同様で外径Ｄで内径Ｄ１
の薄肉円筒状体である。本体部材３１は、前記した本
体部材２１の溝部２１ｃをもたない他は転動体２と同様
の構成で、外径Ｄ１ で内径Ｄ３ の中空部をもった円筒
体を軸芯Ｑを含む平面で４分割し水平面３１ｆ及び垂直
面３１ｇを僅かに高さ及び幅ｈだけ切除し芯部に内径Ｄ
３ の円弧状面３１ｄをもった断面略扇状のセグメント
部３１ａを有している。ここで、セグメント部３１ａと
軸受け１２の前後軸方向長さ比は１対１としてあり、表
面材３５の軸方向長さはセグメント部３１ａの軸方向合
計長さより長く取られている。次に、転動体３の組立て
は軸１３に軸受け１２を複数個（本例では４個）嵌着
し、セグメント部３１ａの４個の組合わせを４組準備し
各組を水平面３１ｆ及び垂直面３１ｇを向合わせて図３
（ｂ）に示す正面図において上下左右対称位置におき形
成される円弧状面３１ｄ間に軸受け１２を挟込みんで水
平面３１ｆ及び垂直面３１ｇが一線に揃うように調整
し、表面材３５を各セグメント部３１ａに嵌着するのみ
で他に締付具は使用していない。端縁部材２２、Ｏリン
グ２２ｈ及び２２ｉは転動体２と同様であり、隣接する
各セグメント部３１ａ間を僅かな隙間２ｈに保持しつつ
転動体３の組立てが完了する。図３においては、軸１
３、軸受け１２、セグメント部３１ａ、表面材３５及び
端縁部材２２の間は隙間の存在を模式的に示するために
誇張して記載してあるが、組立て後の転動体３は、各セ
グメント部３１ａ外周面は同径の円弧面上にあるように
組付けられ、各本体部材３１には軸受け１２が圧入され
一体であり、軸受け１２と軸１３とは摺動可能とされ、
本体部材３１は軸１３回りに回動可能である。A rolling element 3 according to a third embodiment of the present invention shown in FIG. 3 has a main body member 31, an edge member 22, a bearing 12, a shaft 13, and a surface material 35 as an assembly member. The surface material 35 of the assembly member is the same as the surface material 25, and has an outer diameter D and an inner diameter D 1.
Is a thin cylindrical body. Body member 31, except that no groove 21c of the body member 21 described above in the rolling element 2 the same configuration, including axial Q a cylindrical body having a hollow portion of the inner diameter D 3 at the outer diameter D 1 The plane is divided into four parts, and the horizontal plane 31f and the vertical plane 31g are slightly cut off by the height and the width h, and the core has an inner diameter D.
It has a segment portion 31a having a substantially fan-shaped cross section having three arc-shaped surfaces 31d. Here, the length ratio of the segment portion 31a to the bearing 12 in the front-rear axial direction is 1: 1 and the axial length of the surface material 35 is longer than the total axial length of the segment portion 31a. Next, in assembling the rolling elements 3, a plurality of (four in this example) bearings 12 are fitted to the shaft 13, four combinations of four segment portions 31a are prepared, and each combination is divided into a horizontal plane 31f and a vertical plane. Fig. 3
In the front view shown in (b), the bearing 12 is interposed between the arc-shaped surfaces 31d formed at symmetrical positions in the vertical and horizontal directions so that the horizontal surface 31f and the vertical surface 31g are adjusted to be aligned, and the surface material 35 is divided into the respective segments. No other fasteners are used, only fitting to the portion 31a. The edge member 22, the O-rings 22h and 22i are the same as those of the rolling element 2, and the assembly of the rolling element 3 is completed while maintaining a small gap 2h between the adjacent segment portions 31a. In FIG. 3, axis 1
3, the bearing 12, the segment portion 31a, the surface material 35, and the edge member 22 are exaggerated to schematically show the existence of a gap, but the rolling element 3 after assembly is The outer peripheral surface of the portion 31a is assembled so as to be on an arc surface of the same diameter, the bearing 12 is press-fitted into each main body member 31 to be integral, and the bearing 12 and the shaft 13 are slidable.
The main body member 31 is rotatable around the axis 13.

【００１１】図４、５に示す本発明第４例の転動体４
は、本体部材４１、軸受け１２、軸１３及び組付け部材
として固着具４４を有している。本体部材４１は、図４
（ｃ）（ｄ）に示す外径Ｄで内径Ｄ３ の中空部をもっ
た円筒体を軸芯Ｑを含み４分割し水平面４１ｆ及び垂直
面４１ｇを僅かに高さ及び幅ｈだけ切除し芯部に内径Ｄ
３ の円弧状面４１ｄをもった断面略扇状のセグメント
部４１ａと、セグメント部４１ａ表面に水平面４１ｆと
垂直方向に軸芯方向に間隔をおいて前後一対の断面円形
に刳られ芯部に孔４１ｅが穿設された座４１ｂと、座４
１ｂと軸芯方向に間隔Ｐをおいてセグメント部４１ａ表
面に垂直面４１ｇと垂直方向に前後一対の断面円形に刳
られ芯部に孔４１ｅが穿設された座４１ｃとを有し、前
後の座４１ｂと座４１ｃとは対称位置に配設されてい
る。組付け部材の固着具４４は、例えばボルト４４ａ、
ナット４４ｂ及び皿ばね４４ｃよりなっているが、荷重
によってはビス、板座金等を用いてもよい。次に、図４
（ａ）（ｂ）及び図５により転動体４の組立てについて
説明する。軸１３に軸受け１２を複数個（本例では４
個）嵌着し、セグメント部４１ａの４個の組合わせを準
備し各水平面４１ｆ及び垂直面４１ｇを向合わせて
（ｂ）に示す正面図において上下左右対称位置におき各
円弧状面４１ｄによって形成される円周面間に軸受け１
２を挟込み込んだ後、本例では８個の固着具４４を用
い、ボルト４４ａを各孔４１ｅに貫通し、皿ばね４４ｃ
及びナット４４ｂにより座４１ｂ、４１ｃから突出しな
い高さで、隣接する各セグメント部４１ａ間を僅かな隙
間２ｈに保持しつつ強固に固着し、転動体４の組立てが
完了する。組立て後の転動体４は、各セグメント部４１
ａ外周面は同径の円弧面上にあるように組付けられ、各
本体部材４１には軸受け１２が圧入され一体であり、軸
受け１２と軸１３とは摺動可能とされ、本体部材４１は
軸１３回りに回動可能である。ここでは、４分割したセ
グメント部４１ａについて説明したが、分割個数が異な
る場合でも、固着具４４は各セグメント部の向合わせ境
界面に垂直方向に用いるのが固着を確実にできて好まし
い。A rolling element 4 according to a fourth embodiment of the present invention shown in FIGS.
Has a main body member 41, a bearing 12, a shaft 13, and a fixing tool 44 as an assembling member. The main body member 41 is shown in FIG.
(C) a cylindrical body having a hollow portion of the inner diameter D 3 at the outer diameter D shown in (d) of include axial Q 4 divided horizontal plane 41f and only excised core slightly height and width h of the vertical surfaces 41g Inside diameter D
3 , a segment portion 41a having a substantially fan-shaped cross section having an arcuate surface 41d, and a pair of front and rear cross-section circles formed on the surface of the segment portion 41a at an interval in the axial direction perpendicular to a horizontal plane 41f, and a hole 41e is formed in the core portion. And a seat 4b in which
1b and a vertical surface 41g on the surface of the segment portion 41a at an interval P in the axial direction and a seat 41c having a pair of front and rear circular sections in the vertical direction and a hole 41e formed in the core portion. The seat 41b and the seat 41c are disposed at symmetrical positions. For example, bolts 44a,
Although it is composed of the nut 44b and the disc spring 44c, a screw, a plate washer or the like may be used depending on the load. Next, FIG.
The assembly of the rolling element 4 will be described with reference to FIGS. A plurality of bearings 12 (4 in this example)
The four horizontal combinations of the segment portions 41a are prepared, and the horizontal surface 41f and the vertical surface 41g face each other, and are formed in the front and rear symmetrical positions in the front view shown in FIG. Bearing 1 between circumferential surfaces
In this example, eight fasteners 44 are used to penetrate the bolts 44a into the holes 41e, and the disc springs 44c are inserted.
At a height that does not protrude from the seats 41b and 41c by the nuts 44b, the adjacent segments 41a are firmly fixed while maintaining a slight gap 2h between the adjacent segments 41a, and the assembly of the rolling elements 4 is completed. The rolling element 4 after assembly is connected to each segment portion 41.
a The outer peripheral surface is assembled so as to be on an arc surface of the same diameter, the bearing 12 is press-fitted into each main body member 41 and is integral, and the bearing 12 and the shaft 13 are slidable. It is rotatable about an axis 13. Here, the segment part 41a divided into four parts has been described. However, even when the number of divisions is different, it is preferable to use the fixing tool 44 in a direction perpendicular to the facing boundary surface of each segment part, since the fixing can be surely performed.

【００１２】前記転動体１乃至４において説明したセグ
メント部を組合わせた本体部材の軸方向の連設個数は、
免震装置の被支持体に対する耐荷重性能が転動体の被支
持体の荷重を受ける本体部材又は表面材の外径Ｄ及び軸
方向長さによって設定される所から、所望の耐荷重に応
じて増減することができる。セグメント部は、いずれも
等分割したものを用いてあるが必ずしも等分割でなくて
もよく、例えば図１３（ａ）に示すのは、４分割したセ
グメント部の変形例であって、前記転動体２、３が円筒
体を軸芯Ｑを含む平面で４等分割しているのに対し、軸
芯Ｑ回りの円筒状中空部内において軸芯Ｑに平行する近
傍の線Ｕ、Ｕを含む平面に沿って４分割して境界が幅２
ｈとなるように切除して得られる芯部に円弧状面をもっ
た大きさの異なる断面略扇状のセグメント部１５ａ、１
５ｂの各一対を組合わせてある。ここで軸受けの切れ目
１２ａの幅は２ｈとしてあるが、前記隣接するセグメン
ト部の間隔と必ずしも一致しなくてもよい。前記転動体
１乃至４のセグメント部は２分割又は４分割とされてい
るがこれに限定されず、３分割でも５分割以上でもよい
が、余り細分化すると使い勝手が劣り部品点数が増えコ
スト高となり工作上精度が出しにくくなる等の難点が生
ずるので、水平面及び／又は垂直面をもった２等分割又
は４等分割とするのが好ましく、通常比較的重荷重では
２分割とし、比較的中又は軽荷重では４分割とされる。
セグメント部の側面は内部充実した材料構成としてある
が、部分的に中抜きや空洞を有する構造とすれば軽量化
や材料減によるコストダウンを計ることができる。又、
前記した転動体１乃至４においては、セグメント部は円
筒体を分割しているが、例えば機械加工、モールド・押
出し成形等によりそれぞれ単体で各形状に形成したもの
を組合わせて組付け部材により組付けることとしてもよ
い。組付け部材は、締付具１４又は２４、表面材２５又
は３５、固着具４４のいずれかをそれぞれ単独又は組合
わせて使用可能である。The number of the main body members combined with the segment portions described in the rolling elements 1 to 4 is connected in the axial direction.
From the place where the load-bearing capacity of the seismic isolation device against the supported body is set by the outer diameter D and the axial length of the main body member or surface material receiving the load of the supported body of the rolling element, according to the desired load-bearing capacity Can be increased or decreased. Although the segment portions are all equally divided, they need not always be equally divided. For example, FIG. 13A shows a modified example of the segment portion divided into four portions, and the rolling element 2 and 3, the cylindrical body is divided into four equal parts by a plane including the axis Q. On the other hand, in a cylindrical hollow portion around the axis Q, a plane including the adjacent lines U and U parallel to the axis Q is formed. Divide into four along and the border is width 2
h, the segment portions 15a, 1 having a substantially arc-shaped cross section and having arc-shaped surfaces in the core portion obtained by excision.
5b are combined. Here, the width of the gap 12a of the bearing is set to 2h, but does not necessarily have to match the interval between the adjacent segment portions. The segment portion of each of the rolling elements 1 to 4 is divided into two or four, but is not limited to this. The segment may be divided into three or more than five, but if it is too finely divided, the usability deteriorates, the number of parts increases, and the cost increases. Since difficulties such as difficulties in obtaining precision in machining occur, it is preferable to make equal division or four equal divisions having a horizontal plane and / or a vertical plane. At light load, it is divided into four parts.
Although the side surface of the segment portion is made of a material having a solid interior, a structure having a partially hollow or hollow portion can reduce the weight and the cost by reducing the material. or,
In the above-mentioned rolling elements 1 to 4, the segment portion divides the cylindrical body. However, for example, those formed individually in each shape by machining, molding, extrusion molding or the like are combined and assembled by an assembling member. It may be attached. As the assembling member, any one of the fasteners 14 or 24, the surface material 25 or 35, and the fastener 44 can be used alone or in combination.

【００１３】軸受け１２は、本体部材の一個に対して２
個又は４個を使用しているが、これに限定されず、本体
部材の軸方向に長さに合わせて一個としてもよく、より
細分化してもよい。次に、図１３（ｂ）乃至（ｆ）に基
づき前記転動体１の軸受け１２と軸１３との組合わせの
変形例を説明するが、各図共断面図であって組付け部材
は省略し隙間の存在を模式的に示するためにやや誇張し
て記載して示してある。各図において前記転動体１と同
様の構成は同一符号を用い詳細説明を省略するが、これ
らの各構成は前記転動体２乃至４においても使用可能で
ある。図１３（ｂ）は、図１で詳細説明した転動体１で
あり、軸受け１２と軸１３間は摺動可能とされ、各セグ
メント部１１ａには軸受け１２が圧入されて一体であり
軸１３回りに回動可能である。ここで、軸受け１２には
１個の幅２ｈの切れ目１２ａが軸芯方向からみて前後直
線状に連続して穿設されているが、必ずしも隣接するセ
グメント部の間隔と同じく幅２ｈでなくともよく又前後
に僅かに曲がったりスパイラル状であってもよく、セグ
メント部１１ａ上側に被支持体の荷重Ｗがかかったと
き、軸受け１２が僅かに変形可能なように少なくとも１
個で軸芯方向からみて前後に連続しておればよい。これ
は以下の図１３（ｃ）、（ｆ）における軟質部分１２ｂ
についても同様である。又軸受け１２の切れ目１２ａは
複数箇所設けても上記変形は可能であり、その場合には
軸受け１２とセグメント部１１ａの円弧状面１１ｄ又は
軸１３とは固着例えば接着、溶着等が必要となる。しか
しいずれにしても、軸受け１２又はセグメント部１１ａ
の製作などに起因する寸法誤差があるときでも、これら
が荷重により変形して軸１３に馴染み確実に作動可能と
なるもので、以下に説明する図１３（ｃ）乃至（ｅ）の
各例においても同様である。図１３（ｃ）は、図１３
（ｂ）の軸受け１２の切れ目１２ａ部分に軟質部分１２
ｂを有する他は図１３（ｂ）で説明したと同様の構成で
ある。軟質部分１２ｂは、例えば軸受け１２をモールド
により製造する際に局部的に軟質構造となるようにした
り、切れ目１２ａ部分をもった金属製軸受け１２の表面
に樹脂製の減摩材を被覆すること等によって得られる。
軟質部分１２ｂの存在により前記した軸受け１２の変形
が可能である。図１３（ｄ）は、別体の軸受け１２を用
いずセグメント部１１ａと軸１３とを直接摺動可能とし
たもので特に軽荷重の場合に適している。又ここで摺動
部分を転動体２又は３の如く密封構造とし内部に潤滑材
を充填することとしてもよい。各セグメント部間の隙間
２ｈの存在により、セグメント部１１ａ上側に被支持体
の荷重Ｗがかかったときの変形が可能である。図１３
（ｅ）は、軸受け１２の切れ目１２ａ部分をなくした軸
受け１２′用い、軸１３に軸受け１２′が固着され、軸
受け１２′とセグメント部１１ａ間は摺動可能とされ、
各セグメント部１１ａは軸受け１２′が固着されて一体
の軸１３回りに回動可能である。各セグメント部間の隙
間２ｈの存在により、セグメント部１１ａ上側に被支持
体の荷重Ｗがかかったときの変形が可能である。図１３
（ｆ）は、図１３（ｅ）の軸受け１２′に代えて前記図
１３（ｃ）と同様に切れ目１２ａ部分に軟質部分１２ｂ
を有する構成とした軸受け１２が軸１３に圧入され、軸
受け１２とセグメント部１１ａ間は摺動可能とされ、各
セグメント部１１ａは軸受け１２が圧入されて一体の軸
１３回りに回動可能である。各セグメント部間の隙間２
ｈ及び軟質部分１２ｂの存在により、セグメント部１１
ａ上側に被支持体の荷重Ｗがかかったときの変形が可能
である。ここで図示省略するが、軸受け１２に軟質部分
１２ｂをなくし、切れ目１２を残した構成とするとセグ
メント部１１ａとの摺動がやや不円滑となる場合がある
ものの、軽荷重の場合等では使用可能である。いずれの
場合においても、セグメント部１１ａ上側にかかった被
支持体の荷重Ｗが直接セグメント部１１ａ下側に伝えら
れず、必ず軸受け１２と軸１３、セグメント部１１ａと
軸１３又はセグメント部１１ａと軸受け１２の摺動面を
介して伝えられ後述するように各摺動面の摩擦抵抗を免
震に有効利用するものである。The bearing 12 is provided with two main members.
Although four or four pieces are used, the number is not limited to this and may be one piece according to the length in the axial direction of the main body member, or may be further divided. Next, a modified example of the combination of the bearing 12 and the shaft 13 of the rolling element 1 will be described with reference to FIGS. 13B to 13F. In order to schematically show the existence of the gap, it is exaggeratedly shown. In each of the drawings, the same components as those of the rolling element 1 are denoted by the same reference numerals, and detailed description thereof will be omitted. However, these components can also be used in the rolling elements 2 to 4. FIG. 13B shows the rolling element 1 described in detail with reference to FIG. 1. The rolling element 1 is slidable between the bearing 12 and the shaft 13. Can be rotated. Here, one notch 12a having a width of 2h is formed in the bearing 12 so as to be continuous in the front-rear direction when viewed from the axial direction, but it is not always necessary to have the width 2h as in the interval between the adjacent segments. The bearing 12 may be slightly bent back and forth or in a spiral shape, and at least one of the bearings 12 may be slightly deformed so that the bearing 12 can be slightly deformed when a load W of the supported body is applied on the upper side of the segment portion 11a.
It suffices that each piece is continuous back and forth as viewed from the axis direction. This is because the soft portion 12b in FIGS.
The same applies to. The above-described deformation is possible even if a plurality of cuts 12a of the bearing 12 are provided. In this case, the bearing 12 and the arc-shaped surface 11d of the segment portion 11a or the shaft 13 need to be fixed, for example, bonded or welded. However, in any case, the bearing 12 or the segment portion 11a
Even when there is a dimensional error due to the manufacture of the shaft and the like, they are deformed by the load and are adapted to the shaft 13 and can be operated reliably. In each of the examples of FIGS. The same is true for FIG.
The soft portion 12 is formed at the cut 12a of the bearing 12 shown in FIG.
Except for having b, the configuration is the same as that described with reference to FIG. For example, the soft portion 12b is made to have a locally soft structure when the bearing 12 is manufactured by molding, or a resin antifriction material is coated on the surface of the metal bearing 12 having the cut 12a. Obtained by
The bearing 12 can be deformed by the presence of the soft portion 12b. FIG. 13D shows a configuration in which the segment portion 11a and the shaft 13 can be slid directly without using the separate bearing 12, and is particularly suitable for a light load. Here, the sliding portion may have a sealed structure like the rolling elements 2 or 3, and may be filled with a lubricant. Due to the existence of the gap 2h between the segment portions, deformation when a load W of the supported member is applied to the upper side of the segment portion 11a is possible. FIG.
(E) uses a bearing 12 'in which a gap 12a of the bearing 12 is eliminated, the bearing 12' is fixed to the shaft 13, and the bearing 12 'and the segment portion 11a are slidable.
Each segment 11a has a bearing 12 'fixed thereto and is rotatable about an integral shaft 13. Due to the existence of the gap 2h between the segment portions, deformation when a load W of the supported member is applied to the upper side of the segment portion 11a is possible. FIG.
13 (f) shows a soft portion 12b at a cut 12a in the same manner as in FIG. 13 (c) instead of the bearing 12 'in FIG. 13 (e).
The bearing 12 having the structure having the structure described above is press-fitted into the shaft 13, and the sliding between the bearing 12 and the segment portion 11 a is slidable. Each of the segment portions 11 a is press-fitted with the bearing 12 and is rotatable around the integral shaft 13. . Gap between each segment 2
h and the soft portion 12b, the segment portion 11
a Deformation when a load W of the supported body is applied to the upper side is possible. Although not shown here, if the soft portion 12b is eliminated from the bearing 12 and the cut 12 is left, the sliding with the segment portion 11a may be slightly uneven, but it can be used in the case of a light load or the like. It is. In any case, the load W of the supported body applied to the upper side of the segment portion 11a is not directly transmitted to the lower side of the segment portion 11a, and the bearing 12 and the shaft 13, the segment portion 11a and the shaft 13, or the segment portion 11a and the bearing are not necessarily transmitted. As described later, the frictional resistance of each sliding surface is effectively used for seismic isolation.

【００１４】以下図６乃至図１０について本発明の免震
装置を説明する。これらはいずれも転動体３を用いた例
として簡略化して示してあるが、前記した転動体１乃至
４も同様にそれぞれ使用可能である。図６、７に示す本
発明第１例の免震装置５は、ユニットを直交する二段重
ねとし、図６は基準状態にある場合であり、図７は地震
発生時の状態である。図６は左右方向Ｘの地震動に対す
る免震装置５の上段ユニット及び前後方向Ｙの地震動に
対する免震装置５の下段ユニットを示している。上段ユ
ニットの免震装置５は、支持体Ｇと被支持体Ｈ間に介在
して装着され、転動体３、下部案内部材５１、上部案内
部材５２及び支持部材５３を備えている。転動体３は前
記構成で組立てられている上に、本例では軸１３両端に
より細い外径に削られキー溝をもった固着端部１３ａが
設けられ、キー溝に圧入可能なキー１３ｂを有してい
る。下部案内部材５１は、支持体Ｇ上に固設され、平面
視において方形で正面視において振動域の中央部が最低
部分であって両端部に向かって徐々に高くなる凹状とし
て例えば円弧面に形成されている。上部案内部材５２
は、被支持体Ｈ下に固設され、平面視において方形で正
面視において振動域の中央部が最高部分であって両端部
に向かって徐々に低くなる凹状として例えば円弧面に形
成され、下部案内部材５１上方に上部案内部材５２は円
弧面を向合わせにして配設されている。ここで、免震装
置５の二ユニットを直交する二段重ねとした図６におい
ては、下段の上部案内部材５２と上段の下部案内部材５
１は一体物として示してあるが、別体の上部案内部材５
２と下部案内部材５１の平面部を背中合わせに固着して
用いることとしてもよい。支持部材５３は、一対の略方
形の剛性材の基部５３ａの上下左右対称位置の４隅部に
切込み５３ｂが刻設され、各切込み５３ｂの中央部に前
後方向に貫通する４個の支軸として固定軸５３ｄに４個
の回動自在な小車輪５３ｃが遊嵌され、基部５３ａの中
央部に穿設された軸固着孔５３ｅに転動体３の固着端部
１３ａが嵌着され、固着端部１３ａのキー溝にキー１３
ｂを圧入して転動体３が基部５３ａに固着可能とされて
いる。ここで、基部５３ａの形状は必ずしも方形に限ら
れず、４隅部の固定軸５３ｄに４個の小車輪５３ｃが回
動自在であればよく、例えば切込み５３ｂを刻設せず固
定軸５３ｄを基部５３ａより突出させて片持ちとしこれ
に小車輪５３ｃを装着してもよい。又、支軸として固定
軸５３ｄを可動軸に変えて小車輪５３ｃを固着し該可動
軸を基部５３ａと回動自在とする構成としてもよい。The seismic isolation device of the present invention will be described below with reference to FIGS. These are all simplified and shown as examples using the rolling elements 3, but the above-described rolling elements 1 to 4 can also be used similarly. The seismic isolation device 5 according to the first example of the present invention shown in FIGS. 6 and 7 has a unit in which two units are stacked at right angles, FIG. 6 shows a case in a reference state, and FIG. 7 shows a state when an earthquake occurs. FIG. 6 shows the upper unit of the seismic isolation device 5 for the seismic motion in the left-right direction X and the lower unit of the seismic isolation device 5 for the seismic motion in the front-rear direction Y. The seismic isolation device 5 of the upper unit is mounted so as to be interposed between the support body G and the supported body H, and includes a rolling element 3, a lower guide member 51, an upper guide member 52, and a support member 53. The rolling element 3 is assembled in the above-described configuration. In addition, in this example, a fixed end portion 13a having a key groove and having a small outer diameter formed by both ends of the shaft 13 is provided, and a key 13b that can be press-fitted into the key groove is provided. are doing. The lower guide member 51 is fixed on the support body G, and is formed in, for example, an arc surface as a concave shape having a rectangular shape in a plan view and a central portion of a vibration region being a lowest portion in a front view and gradually increasing toward both ends in a front view. Have been. Upper guide member 52
Is fixed below the supported member H, is formed in a rectangular shape in a plan view, for example, as a concave shape in which the central portion of the vibration region is the highest portion in a front view and gradually decreases toward both ends, for example, in an arcuate surface. The upper guide member 52 is disposed above the guide member 51 with the arc surfaces facing each other. Here, in FIG. 6 in which two units of the seismic isolation device 5 are superimposed in two stages orthogonally, the lower upper guide member 52 and the upper lower guide member 5
1 is shown as an integral part, but a separate upper guide member 5
The second guide member 51 and the flat portion of the lower guide member 51 may be fixed back to back for use. The support member 53 is provided with cuts 53b formed at four corners of a pair of substantially rectangular rigid material bases 53a at symmetrical positions in the up-down and left-right directions, and as four support shafts penetrating the center of each cut 53b in the front-rear direction. Four rotatable small wheels 53c are loosely fitted to the fixed shaft 53d, and the fixed end 13a of the rolling element 3 is fitted to a shaft fixing hole 53e formed in the center of the base 53a. Key 13 in the keyway 13a
The rolling element 3 can be fixed to the base 53a by press-fitting b. Here, the shape of the base 53a is not necessarily limited to a square, and it is sufficient that the four small wheels 53c are rotatable around the fixed shaft 53d at the four corners. For example, the fixed shaft 53d is formed without cutting the cut 53b. The small wheels 53c may be attached to the cantilever by projecting from the 53a. Further, a configuration may be adopted in which the small shaft 53d is fixed to the movable shaft instead of the fixed shaft 53d as a support shaft, and the movable shaft is rotatable with the base 53a.

【００１５】免震装置５の一ユニットの組立ては、一対
の支持部材５３を前後に平行状態におき軸固着孔５３ｅ
に軸１３の端部１３ａを嵌着しキー溝にキー１３ｂを圧
入して転動体３の軸１３両端部を基部５３ａに固着し、
対向位置に配設された下部案内部材５１と上部案内部材
５２の間に転動体３及び支持部材５３を介在せしめ左右
方向Ｘに転動体３の本体部材３１が転動可能な様にセッ
トされる。軸１３の両端と基部５３ａとの固着はキー止
めではなくノック止め、ボルト止め又は溶着等によって
もよい。図６の基準状態では、表面材３５の表面と下部
案内部材５１及び上部案内部材５２との接触部分はそれ
ぞれ下部案内部材５１の最低部分及び上部案内部材５２
の最高部分と一致し正面視において該接触部分を結ぶ線
は軸１３の軸芯を通る鉛直線を形成し、このとき小車輪
５３ｃの固定軸５３ｄ軸芯は軸１３の軸芯から上下左右
等間隔の位置にあって各小車輪５３ｃはそれぞれ下部案
内部材５１及び上部案内部材５２に転動可能とされてい
る。下段ユニットの免震装置５は、前記した上段ユニッ
トの本体部材３１の転動方向を前後方向Ｙにおいた構成
であり詳細説明を省略する。上記構成により、本体部材
３１は軸１３回りに回動しつつ表面材３５を介して下部
案内部材５１及び上部案内部材５２に沿い上段は左右方
向Ｘ又は下段は前後方向Ｙに転動し、それと同時に支持
部材５３に固着された軸１３は回動することなく支持部
材５３と共に下部案内部材５１及び上部支持部材５２に
沿う小車輪５３ｃの転動によって上段は左右方向Ｘ又は
下段は前後方向Ｙに揺動可能とされている。To assemble one unit of the seismic isolation device 5, a pair of support members 53 are set in a front-rear parallel state, and a shaft fixing hole 53e is provided.
The end 13a of the shaft 13 is fitted into the groove, and the key 13b is press-fitted into the key groove to fix both ends of the shaft 13 of the rolling element 3 to the base 53a.
The rolling element 3 and the supporting member 53 are interposed between the lower guiding member 51 and the upper guiding member 52 disposed at the opposing positions, and the main body member 31 of the rolling element 3 is set to be able to roll in the left-right direction X. . The fixing between the both ends of the shaft 13 and the base 53a may be performed by knocking, bolting, welding, or the like instead of keying. In the reference state of FIG. 6, the contact portions between the surface of the surface material 35 and the lower guide member 51 and the upper guide member 52 are respectively the lowest portion of the lower guide member 51 and the upper guide member 52.
The line connecting the contact portion in the front view, which coincides with the highest portion, forms a vertical line passing through the axis of the shaft 13. At this time, the axis of the fixed shaft 53d of the small wheel 53c is vertically and horizontally shifted from the axis of the shaft 13. The small wheels 53c can be rolled to the lower guide member 51 and the upper guide member 52 at the intervals. The seismic isolation device 5 of the lower unit has a configuration in which the rolling direction of the main body member 31 of the upper unit is in the front-rear direction Y, and a detailed description is omitted. With the above structure, the main body member 31 rotates along the lower guide member 51 and the upper guide member 52 via the surface material 35 while rotating around the shaft 13, and the upper stage rolls in the left-right direction X or the lower stage rolls in the front-rear direction Y, and At the same time, the shaft 13 fixed to the support member 53 does not rotate and the small wheel 53c rolling along the lower guide member 51 and the upper support member 52 together with the support member 53 causes the upper stage to move in the left-right direction X or the lower stage to move in the front-rear direction Y. It is possible to swing.

【００１６】図８に示す本発明第２例の免震装置６は、
基準状態にある場合で、左右方向Ｘの地震動に対する免
震装置のユニットを示している。免震装置６は、支持体
Ｇと被支持体Ｈ間に介在して装着され、転動体３、下部
案内部材５１、上部案内部材５２、及び支持部材６３を
備えている。下部案内部材５１及び上部案内部材５２は
前記免震装置５と同様の構成であるが、転動体３は一対
が用いられる。支持部材６３は一対の略方形の剛性材で
左右対称位置に一対の平行な転動体３の軸１３の両端部
が固着されるが本例では溶着とされている。軸１３と支
持部材６３との固着は、前記免震装置５の軸１３と支持
部材５３と同様の各態様がある。支持部材６３の形状
は、方形に限定されず、各転動体３の軸１３間に掛渡さ
れる大きさのものであればよい。免震装置６の組立て
は、転動体３の軸１３一対の両端を支持部材６３で固着
する他は免震装置５の一ユニットの組立てと同様であ
る。上記構成により、図８の基準状態では、各表面材３
５の表面と下部案内部材５１及び上部案内部材５２との
接触部分はそれぞれ下部案内部材５１の最低部分及び上
部案内部材５２の最高部分を結ぶ鉛直面より左右等間隔
の位置にあり、各本体部材３１は軸１３回りに回動しつ
つ表面材３５を介して下部案内部材５１及び上部案内部
材５２に沿い左右方向Ｘに転動可能で、支持部材６３に
固着された各軸１３は支持部材６３と共に回動すること
なく左右方向Ｘに揺動可能とされている。ここで図示省
略するが、耐荷重を増大するために本体部材３１のユニ
ット数を増加し、各軸１３を伸ばし僅かな間隔をおいて
本体部材３１のユニットを直列に配列し、各軸１３の両
端部及び隣接する本体部材３１のユニット間に２以上の
支持部材６３を各軸１３間に掛渡して固着することとし
てもよいが、いずれの場合でも少なくとも支持部材６３
は２個で軸１３両端部の固着は必要である。The seismic isolation device 6 of the second embodiment of the present invention shown in FIG.
In the reference state, the unit of the seismic isolation device against the ground motion in the left-right direction X is shown. The seismic isolation device 6 is mounted between the support body G and the supported body H, and includes the rolling element 3, a lower guide member 51, an upper guide member 52, and a support member 63. The lower guide member 51 and the upper guide member 52 have the same configuration as the seismic isolation device 5, but a pair of rolling elements 3 are used. The support member 63 is a pair of substantially rectangular rigid members, and both ends of the shafts 13 of the pair of parallel rolling elements 3 are fixed at symmetrical positions, but are welded in this example. The fixing of the shaft 13 and the support member 63 is similar to that of the shaft 13 and the support member 53 of the seismic isolation device 5. The shape of the support member 63 is not limited to a square, and may be any size as long as it is stretched between the shafts 13 of the rolling elements 3. The assembly of the seismic isolation device 6 is the same as the assembly of one unit of the seismic isolation device 5 except that both ends of the pair of shafts 13 of the rolling elements 3 are fixed by the support members 63. With the above configuration, in the reference state of FIG.
5 and the contact portions between the lower guide member 51 and the upper guide member 52 are equidistant from the vertical plane connecting the lowest portion of the lower guide member 51 and the highest portion of the upper guide member 52, respectively. Numeral 31 is rotatable in the left-right direction X along the lower guide member 51 and the upper guide member 52 via the surface material 35 while rotating around the shaft 13, and each shaft 13 fixed to the support member 63 is It can swing in the left-right direction X without rotating together. Although not shown here, the number of units of the main body member 31 is increased in order to increase the load resistance, the shafts 13 are extended, and the units of the main body member 31 are arranged in series at a slight interval. Two or more support members 63 may be fixed between the shafts 13 at both ends and between the units of the main body member 31 adjacent to each other.
Are required, and both ends of the shaft 13 need to be fixed.

【００１７】図９に示す本発明第３例の免震装置７は、
基準状態にある場合で、左右方向Ｘの地震動に対する免
震装置のユニットを示している。免震装置７は、支持体
Ｇと被支持体Ｈ間に介在して装着され、転動体３、下部
案内部材５１、上部案内部材５２及び支持部材７３を備
えている。転動体３、下部案内部材５１及び上部案内部
材５２は前記免震装置５と同様の構成である。支持部材
７３は、各一対の中部リンク７３ａ、上部リンク７３ｂ
及び下部リンク７３ｃを有している。中部リンク７３ａ
は、中央部が軸１３の両端部にキーによって固着され、
正面視において右下側より左上側に向かって斜めに延び
た等距離の上下端部にピン７３ｄ及び７３ｅによって同
じ長さの上部リンク７３ｂ及び下部リンク７３ｃが回動
自在に連結されている。上部リンク７３ｂは、中部リン
ク７３ａ上側のピン７３ｄ連結部から右上側に伸びピン
７３ｆによって上部案内部材５２最高部分の鉛直線上側
面に回動自在に連結されている。下部リンク７３ｃは、
中部リンク７３ａ下側のピン７３ｅ連結部から左下側に
伸び、ピン７３ｇによって下部案内部材５１最低部分の
鉛直線下側面に回動自在に連結されている。軸１３と中
部リンク７３ａとの固着は、前記免震装置５の軸１３と
支持部材５３と同様の各態様がある。免震装置７の組立
ては、軸１３の両端に中部リンク７３ａを固着し、ピン
７３ｆ及び７３ｇによって上部案内部材５２及び下部案
内部材５１に回動自在に連結する他は免震装置５の一ユ
ニットの組立てと同様である。上記構成により、本体部
材３１は軸１３回りに回動しつつ表面材３５を介して下
部案内部材５１及び上部案内部材５２に沿い左右方向Ｘ
に転動可能で、支持部材の中部リンク７３ａに固着され
た軸１３は中部リンク７３ａと共に回動することなく左
右方向Ｘに揺動可能とされている。図９の基準状態で
は、ピン７３ｇ、転動体３の軸１３及びピン７３ｆの各
軸芯は正面視において同一鉛直線上におかれ、軸１３の
軸芯は基準状態及び左右方向Ｘの転動時に係らず常時上
部案内部材５２のピン７３ｆ軸芯と下部案内部材５１の
ピン７３ｇ軸芯との中点に維持可能とされている。The seismic isolation device 7 of the third embodiment of the present invention shown in FIG.
In the reference state, the unit of the seismic isolation device against the ground motion in the left-right direction X is shown. The seismic isolation device 7 is mounted so as to be interposed between the support body G and the supported body H, and includes the rolling element 3, the lower guide member 51, the upper guide member 52, and the support member 73. The rolling element 3, the lower guide member 51, and the upper guide member 52 have the same configuration as the seismic isolation device 5. The support member 73 includes a pair of middle links 73a and upper links 73b.
And a lower link 73c. Central link 73a
Has a central part fixed to both ends of the shaft 13 by keys,
Upper and lower links 73b and 73c of the same length are rotatably connected to upper and lower ends of equal distances extending obliquely from the lower right to the upper left in front view by pins 73d and 73e. The upper link 73b extends to the upper right from the pin 73d connection portion on the upper side of the middle link 73a, and is rotatably connected to the vertical upper side surface of the highest part of the upper guide member 52 by a pin 73f. The lower link 73c is
It extends to the lower left from the pin 73e connecting portion below the middle link 73a, and is rotatably connected to the lower vertical surface of the lowest part of the lower guide member 51 by a pin 73g. The shaft 13 and the middle link 73a are fixed to each other in the same manner as the shaft 13 and the support member 53 of the seismic isolation device 5. The assembling of the seismic isolation device 7 is performed by fixing the middle link 73a to both ends of the shaft 13 and rotatably connecting to the upper guide member 52 and the lower guide member 51 by pins 73f and 73g. Is the same as the assembling. With the above configuration, the main body member 31 rotates in the left-right direction X along the lower guide member 51 and the upper guide member 52 via the surface material 35 while rotating around the shaft 13.
The shaft 13 fixed to the middle link 73a of the support member can swing in the left-right direction X without rotating with the middle link 73a. In the reference state of FIG. 9, the respective axes of the pin 73g, the shaft 13 of the rolling element 3 and the pin 73f are on the same vertical line in front view, and the axis of the shaft 13 is in the reference state and when rolling in the left-right direction X. Regardless, the pin 73f of the upper guide member 52 and the pin 73g of the lower guide member 51 can always be maintained at the midpoint between them.

【００１８】図１０に示す本発明第４例の免震装置８
は、基準状態にある場合で、ユニットを直交する二段重
ねとし、左右方向Ｘの地震動に対する免震装置の下段ユ
ニット及び前後方向Ｙの地震動に対する免震装置の上段
ユニットを示している。免震装置８のユニットは、支持
体Ｇと被支持体Ｈ間に介在して装着され、転動体３、下
部案内部材８１、上部案内部材８２、支持部材８３及び
リンク部８４を備えている。ここでの転動体３は、本体
部材３１の３ユニットを軸受け１２を介して一本の軸１
３に僅かな間隔をおいて直列に配列したものを一対用い
ている。先ず下段ユニットについて、下部案内部材８１
は支持体Ｇ上に固設され、正面視において二区分され振
動域の中央部が最低部分であって両端部に向かって徐々
に高くなる凹状として一対の同一形状の例えば円弧面の
凹状部８１ａ、８１ｂが中央部の水平部８１ｃを介して
直列に連設して形成され、平面視において方形をなして
いる。上部案内部材８２は、被支持体Ｈ下に固設され、
正面視において二区分され振動域の中央部が最高部分で
あって両端部に向かって徐々に低くなる凹状として一対
の同一形状の例えば円弧面の凹状部８２ａ、８２ｂが中
央部の水平部８２ｃを介して直列に連設して形成され、
平面視において方形をなし、下部案内部材８１上方に上
部案内部材８２が各円弧面を向合わせにして配設されて
いる。ここで、免震装置８の二ユニットを直交する二段
重ねとした図１０においては、下段の上部案内部材８２
と上段の下部案内部材８１は一体物として示してある
が、別体の上部案内部材８２と下部案内部材８１の平面
部を背中合わせに固着して用いることとしてもよい。又
水平部８１ｃ、８２ｃは省略し、上部案内部材８２及び
下部案内部材８１の各区分を密接配置してもよいし、離
隔位置に配置することもできる。又各区分の数は二区分
に限定されず他の複数としてもよいし、免震装置６と同
様一区分であってもよい。支持部材８３は、略方形剛性
材の４個を用い、左右対称位置に一対の転動体３の軸１
３の両端部及び隣接する本体部材３１の３ユニット間に
それぞれが固着されている。軸１３と支持部材８３との
固着は、前記免震装置５の軸１３と支持部材５３と同様
の各態様がある。又支持部材８３は、前記支持部材６３
と同様必ずしも方形でなくてもよい。支持部材８３の数
は、本体部材３１のユニット数又は使用態様によって増
減することができる。リンク部８４は、前記した免震装
置７の支持部材７３と同様の構成で、各一対の中部リン
ク８４ａ、上部リンク８４ｂ及び下部リンク８４ｃを有
している。中部リンク８４ａは、中央が支持部材８３の
中点にピン（図面輻輳のため符号省略、以下同じ）によ
って回動自在に連結され、正面視において斜めに延びた
等距離の上下端部にピンによって同じ長さの上部リンク
８４ｂ及び下部リンク８４ｃが回動自在に連結されてい
る。上部リンク８４ｂは、中部リンク８４ａ上側のピン
連結部から斜め上側に伸びピンによって上部案内部材８
２の水平部８２ｃの中央鉛直線上側面に回動自在に連結
されている。又下部リンク８４ｃは、中部リンク８４ａ
下側のピン連結部から斜め下側に伸びピンによって下部
案内部材８１の水平部８１ｃの中央鉛直線下側面に回動
自在に連結されている。ここで中部リンク８４ａ中央部
のピンは、支持部材８３の中点でなく支持部材８３のい
ずれか一点とし、上部リンク８４ｂ上端部が上部案内部
材８２側面に又下部リンク８４ｃ下端部が下部案内部材
８１側面においてそれぞれ支持部材８３の前記一点の上
下対称位置に回動自在に連結することとしてもよいが、
前記支持部材８３の中点とするのがバランス上好まし
い。免震装置８の一ユニットの組立ては、予め３ユニッ
トを直列に配列した本体部材３１の３ユニットの軸１３
間に支持部材８３を掛渡して固着したもの準備し、対向
位置に配設された下部案内部材８１と上部案内部材８２
の間に一対の転動体３を介在せしめ左右方向Ｘに転動可
能な様にセットされる。上段ユニットの免震装置８は、
前記した下段ユニットを本体部材３１の転動方向を前後
方向Ｙにおいた構成であり詳細説明を省略する。上記構
成により、本体部材３１は軸１３回りに回動しつつ表面
材３５を介して各下部案内部材８１及び上部案内部材８
２に沿い下段は左右方向Ｘ又は上段は前後方向Ｙに転動
し、それと同時に支持部材８３に固着された各軸１３は
回動することなく下段は左右方向Ｘ又は上段は前後方向
Ｙに支持部材８３と共に揺動可能とされている。又図１
０の基準状態では、上部案内部材８２のピン、中部リン
ク８４ａ中央部のピン及び下部案内部材８１のピンの各
軸芯は正面視において同一鉛直線上におかれ、中部リン
ク８４ａの上側及び下側ピンの各軸芯を通る鉛直線は中
部リンク８４ａ中央部のピン軸芯の鉛直線からそれぞれ
左右等間隔の位置にある。この中部リンク８４ａ中央部
のピン軸芯は基準状態及び左右方向Ｘ又は前後方向Ｙの
転動時に係らず常時上部案内部材８２のピン軸芯と下部
案内部材８１のピン軸芯との中点に維持可能とされてい
る。ここで中部リンク８４ａ中央部のピンを支持部材８
３の中点でなく他の一点とした場合には、その一点は各
案内部材のピン軸芯の中点に常時維持可能である。FIG. 10 shows a seismic isolation device 8 according to a fourth embodiment of the present invention.
In the reference state, the unit is a two-tiered unit that is orthogonal to each other, and shows the lower unit of the seismic isolator for the seismic motion in the left-right direction X and the upper unit of the seismic isolator for the seismic motion in the front-rear direction Y. The unit of the seismic isolation device 8 is mounted between the support body G and the supported body H, and includes a rolling element 3, a lower guide member 81, an upper guide member 82, a support member 83, and a link portion 84. The rolling element 3 here is composed of three units of the main body member 31 via the bearing 12 to form one shaft 1.
3 are arranged in series at a slight interval. First, regarding the lower unit, the lower guide member 81
Are fixed on the support body G, are divided into two parts in front view, and the center of the vibration area is the lowest part, and gradually becomes higher toward both ends. , 81b are formed continuously in series via a central horizontal portion 81c, and have a square shape in plan view. The upper guide member 82 is fixed below the supported member H,
A pair of identically shaped concave portions 82a and 82b, for example, arc-shaped concave portions 82a and 82b form a central horizontal portion 82c as a concave shape which is divided into two portions in a front view and the central portion of the vibration region is the highest portion and gradually decreases toward both ends. Formed in series via
An upper guide member 82 is disposed above the lower guide member 81 with the respective arc surfaces facing each other. Here, in FIG. 10 in which two units of the seismic isolation device 8 are overlapped in two orthogonal stages, the lower upper guide member 82
Although the upper guide member 81 and the lower guide member 81 at the upper stage are shown as an integral body, the flat portions of the upper guide member 82 and the lower guide member 81 which are separate bodies may be fixed back to back for use. The horizontal portions 81c and 82c may be omitted, and the sections of the upper guide member 82 and the lower guide member 81 may be arranged closely or may be arranged at separated positions. Further, the number of each section is not limited to two sections, and may be another plurality, or may be one section as in the case of the seismic isolation device 6. The support member 83 uses four substantially rectangular rigid members, and the shafts 1 of the pair of rolling elements 3 are located at symmetric positions.
3 are fixed to both ends and between three units of the adjacent main body member 31. The fixing of the shaft 13 and the support member 83 is the same as that of the shaft 13 and the support member 53 of the seismic isolation device 5. The support member 83 is a support member.
It is not always necessary to use a rectangular shape as in the case of FIG. The number of the support members 83 can be increased or decreased depending on the number of units of the main body member 31 or the mode of use. The link portion 84 has the same configuration as the support member 73 of the seismic isolation device 7 described above, and has a pair of middle links 84a, upper links 84b, and lower links 84c. The center link 84a is rotatably connected to the center of the support member 83 by a pin (not shown due to congestion in the drawing, the same applies hereinafter) at the center, and is connected to the upper and lower ends of the equidistant, obliquely extending front view by pins. An upper link 84b and a lower link 84c having the same length are rotatably connected. The upper link 84b extends diagonally upward from the pin connecting portion on the upper side of the middle link 84a, and the upper guide member 8 is formed by a pin.
The second horizontal portion 82c is rotatably connected to the upper surface of the central vertical line. The lower link 84c is a central link 84a.
It extends diagonally downward from the lower pin connecting portion and is rotatably connected to the lower surface of the central vertical line of the horizontal portion 81c of the lower guide member 81 by a pin. Here, the pin at the center of the middle link 84a is not at the middle point of the support member 83 but at any one point of the support member 83, and the upper end of the upper link 84b is on the side of the upper guide member 82 and the lower end of the lower link 84c is the lower guide member. It may be rotatably connected to the one point vertically symmetrical position of the support member 83 on the 81 side surface,
The midpoint of the support member 83 is preferable for balance. Assembling of one unit of the seismic isolation device 8 is performed by using the three unit shafts 13 of the main body member 31 in which three units are previously arranged in series.
The lower guide member 81 and the upper guide member 82 which are provided with the support member 83 suspended and fixed
A pair of rolling elements 3 are interposed between them so that they can be rolled in the left-right direction X. The seismic isolation device 8 of the upper unit
The lower unit described above has a configuration in which the rolling direction of the main body member 31 is in the front-rear direction Y, and a detailed description is omitted. With the above-described configuration, the main body member 31 rotates around the shaft 13 and the lower guide member 81 and the upper guide member 8 via the surface material 35.
Along 2, the lower stage rolls in the left-right direction X or the upper stage rolls in the front-rear direction Y, and at the same time, each shaft 13 fixed to the support member 83 does not rotate, and the lower stage is supported in the left-right direction X or the upper stage is supported in the front-rear direction Y. It is swingable together with the member 83. FIG. 1
In the reference state of 0, the axes of the pin of the upper guide member 82, the pin at the center of the middle link 84a, and the pin of the lower guide member 81 are on the same vertical line when viewed from the front, and the upper and lower sides of the middle link 84a. The vertical line passing through each axis of the pin is located at equal left and right intervals from the vertical line of the pin axis at the center of the middle link 84a. The center axis of the center link 84a is always at the midpoint between the center axis of the upper guide member 82 and the center axis of the lower guide member 81 irrespective of the reference state and when rolling in the lateral direction X or the longitudinal direction Y. It can be maintained. Here, the pin at the center of the middle link 84a is connected to the support member 8.
In the case where another point is set instead of the middle point of 3, the one point can always be maintained at the middle point of the pin axis of each guide member.

【００１９】次に、前記転動体１〜４とは別形式の本発
明第５例の転動体９を図１２について説明する。転動体
９は、本体部材９１、軸受け１２、軸１３及び組付け部
材として締付具１４を有している。先ず図１２（ａ）
（ｂ）により転動体９の各構成要素を説明する。本体部
材９１は、図１２（ｂ）に示す正面視において軸芯部に
内径Ｄ３ の断面円形中空部をもち断面形状が該中空部
の軸芯Ｑから下及び上に距離Ｔだけずれた点を中心とし
て半径Ｒの円弧の組合わせにより形成された外面を有す
る筒状体を軸芯Ｑを含む平面に沿って対称形に２分割
し、各水平面９１ｅを僅かの高さｈだけ切除して得られ
る芯部に内径Ｄ３ の円弧状面９１ｄをもった断面略弧
形のセグメント部９１ａと、セグメント部９１ａの前後
端部に張出してセグメント部９１ａ表面より僅かに小さ
い外径Ｄ１ の前後一対の縁部９１ｂと、縁部９１ｂの
中間に刻まれた外径Ｄ１ より僅かに小さい外径Ｄ２ の
前後一対の溝部９１ｃとを有した単位ユニットと、該単
位ユニットの一対を軸芯部及びセグメント部９１ａ表面
を揃えて前後方向直列に縁部９１ｂ同士を固着した連設
ユニットとよりなっている。ついで転動体９の組立てに
ついて説明する。軸１３に軸受け１２を本体部材９１の
前後幅に合わせた個数嵌着するが、このとき図１２
（ａ）に示す様に、例えば前より上側を単位ユニット＋
連設ユニット＋単位ユニットとし、下側を連設ユニット
＋連設ユニットとして各ユニットの継ぎ目が重ならない
組合わせとし、各本体部材９１の一対を水平面９１ｅを
向合わせて対称位置におき、上下の円弧状面９１ｄによ
って形成される円周面間に軸受け１２を挟込みんだ後締
付具１４を溝部９１ｃに圧入して位置決めし、順次各本
体部材９１の一対を同様にして隣合わせ位置において締
付具１４を溝部９１ｃに圧入して縁部９１ｂが隣接する
ように位置決めし、各本体部材９１の水平面９１ｅが一
線に揃う様に調整することにより隣接する各セグメント
部９１ａ間を隙間２ｈに保持しつつ転動体９の組立てが
完了する。締付具１４はセグメント部９１ａ表面より突
出しない高さである。本体部材９１は連設ユニットと単
位ユニットとの配置は上下を前記と入替えてもよい。又
耐荷重や用途によっては単位ユニット一対の組合わせで
用いることもできるが、本例は通常重荷重向けであるの
で、上記した単位ユニットと連設ユニットの組合わせと
した方が安定して使用可能である。組立て後の転動体９
は、各本体部材９１と軸受け１２とは一体で、軸受け１
２と軸１３とは摺動可能とされている。ここで本体部材
９１は断面形状が前記円弧の組合わせを外面としている
が、形状はこれに限定されず、上下左右対称であって上
下方向がこれに垂直な左右方向に対して寸詰まりの断面
略鍋底形の湾曲面であればよく、曲率が変化してもよ
く、例えば特公昭６２−２９５８９号公報記載の指数渦
線等が選択可能である。又組付け部材としては、締付具
１４以外の前記した表面材２５、３５、固着具４４と同
様のものも使用可能であるが、表面材の場合にはセグメ
ント部９１ａの外表面に合わて嵌着可能な薄肉筒状体を
用いる。Next, a rolling element 9 according to a fifth embodiment of the present invention, which is different from the rolling elements 1 to 4, will be described with reference to FIG. The rolling element 9 has a main body member 91, a bearing 12, a shaft 13, and a fastener 14 as an assembly member. First, FIG.
Each component of the rolling element 9 will be described with reference to FIG. Body member 91, that the cross-sectional shape having a circular cross section hollow portion of the inner diameter D 3 in the axial center portion is displaced by a distance T below and above the axis Q of the hollow portion in the front view shown in FIG. 12 (b) Is divided into two symmetrically along a plane including the axis Q, and a horizontal surface 91e is cut by a slight height h. a segment portion 91a substantially arc-shaped cross section having an arcuate surface 91d of the inner diameter D 3 to the resulting core, front and rear end portions projecting longitudinal than segment portion 91a surface of the slightly smaller outer diameter D 1 Te to the segment portion 91a axial and a pair of edge portions 91b, a unitary unit having a pair of grooves 91c around the outer diameter D 1 slightly less than the outer diameter D 2 engraved in the middle of the edge 91b, a pair of the unit unit Section and the surface of the segment section 91a in the front-rear direction It is more a continuously provided unit which is fixed the edge 91b together in a column. Next, the assembly of the rolling elements 9 will be described. The number of the bearings 12 fitted to the shaft 13 in accordance with the front-rear width of the main body member 91 is fitted.
For example, as shown in FIG.
Combination unit + unit unit, lower unit is combination unit + continuous unit, so that the seams of the units do not overlap, a pair of body members 91 are symmetrically positioned with horizontal plane 91e facing up and down. After the bearing 12 is sandwiched between the circumferential surfaces formed by the arc-shaped surfaces 91d, the fasteners 14 are press-fitted into the grooves 91c and positioned, and the pairs of the main body members 91 are sequentially tightened in the adjacent position in the same manner. The attachment 14 is press-fitted into the groove portion 91c and positioned so that the edge portions 91b are adjacent to each other, and the horizontal surfaces 91e of the main body members 91 are adjusted so as to be aligned, thereby holding the adjacent segment portions 91a in the gap 2h. Then, the assembly of the rolling elements 9 is completed. The fastener 14 has a height that does not protrude from the surface of the segment portion 91a. In the main body member 91, the arrangement of the continuous units and the unit units may be switched upside down. Depending on the load capacity and application, it can be used in a combination of a pair of unit units. However, since this example is usually for heavy loads, the combination of the unit unit and the continuous unit described above can be used more stably. It is possible. Rolling element 9 after assembly
The main body member 91 and the bearing 12 are integral with each other,
2 and the shaft 13 are slidable. Here, the main body member 91 has a cross-sectional shape whose outer surface is a combination of the arcs, but the shape is not limited to this, and the cross-sectional shape is symmetrical in the vertical and horizontal directions, and the vertical direction is close to the horizontal direction perpendicular thereto. Any curved surface may be used as long as it is a substantially pan-bottomed curved surface, and the curvature may change. For example, an exponential vortex line described in Japanese Patent Publication No. 62-29589 can be selected. In addition, as the assembling member, those similar to the above-described surface members 25 and 35 and the fixing member 44 other than the fastener 14 can be used, but in the case of the surface member, the same as the outer surface of the segment portion 91a. A thin tubular body that can be fitted is used.

【００２０】転動体９を用いた免震装置としては、前記
免震装置５〜８において転動体３に代えて転動体９を装
着して用いることが可能であるが、最も有効なのは図１
２（ｃ）（ｄ）に示す免震装置１０である。免震装置１
０は、支持体Ｇと被支持体Ｈ間に介在して装着され、転
動体９、下部案内部材１０１、上部案内部材１０２及び
支持部材（図示省略）を備えている。下部案内部材１０
１は、支持体Ｇ上に固設され、平面視において方形（図
示省略）で正面視において表面が平坦に形成されてい
る。上部案内部材１０２は、被支持体Ｈ下に固設され、
平面視において方形（図示省略）で正面視において表面
が平坦に形成され、下部案内部材１０１上方に上部案内
部材１０２は平担面を向合わせにして配設されている。
転動体９は、基準状態で寸詰まりの方向が上下となるよ
うに下部案内部材１０１及び上部案内部材１０２間に装
着される。図示省略した支持部材は、支持部材５３、６
３、７３、８３と同様の構成で、一対が軸１３の両端に
固着されている。軸１３と支持部材１０３との固着は、
前記免震装置５の軸１３と支持部材５３と同様の各態様
がある。上記構成により、本体部材９１は軸１３回りに
回動しつつ下部案内部材１０１及び上部案内部材１０２
に沿い左右方向Ｘに転動し、それと同時に支持部材に固
着された軸１３は回動することなく左右方向Ｘに揺動可
能とされている。ここで、下部案内部材１０１及び上部
案内部材１０２は表面が平坦に形成されているが、形状
はこれに限定されず湾曲面であってもよく、その形状は
本体部材９１の外面形状と組合わせて所望の免震特性が
得られるように選定される。As the seismic isolation device using the rolling elements 9, it is possible to use the rolling elements 9 in place of the rolling elements 3 in the seismic isolation devices 5 to 8, but the most effective one is shown in FIG.
2 (c) and 2 (d). Seismic isolation device 1
Numeral 0 is mounted between the support body G and the supported body H, and includes a rolling element 9, a lower guide member 101, an upper guide member 102, and a support member (not shown). Lower guide member 10
Numeral 1 is fixed on the support G, and has a rectangular shape (not shown) in plan view and a flat surface in front view. The upper guide member 102 is fixed below the supported member H,
The upper guide member 102 is disposed above the lower guide member 101 with the flat surfaces facing each other, and has a rectangular shape (not shown) in plan view and a flat surface in front view.
The rolling element 9 is mounted between the lower guide member 101 and the upper guide member 102 so that the direction of the clogging is vertical in the reference state. The supporting members not shown are supporting members 53 and 6.
In the same configuration as 3, 73 and 83, a pair is fixed to both ends of the shaft 13. The fixation between the shaft 13 and the support member 103
There are various modes similar to those of the shaft 13 and the support member 53 of the seismic isolation device 5. With the above configuration, the main body member 91 rotates about the axis 13 while the lower guide member 101 and the upper guide member 102
, And the shaft 13 fixed to the support member can simultaneously swing in the left-right direction X without rotating. Here, the surfaces of the lower guide member 101 and the upper guide member 102 are formed to be flat, but the shape is not limited to this and may be a curved surface, and the shape is combined with the outer surface shape of the main body member 91. Is selected so as to obtain the desired seismic isolation characteristics.

【００２１】免震装置５〜８においては、転動体３を用
いているが、他の転動体に置代えてもよく、左右方向Ｘ
及び前後方向Ｙの地震動に対する免震装置として上下段
の二段重ねとした免震装置５及び８は一方向向けとして
一段のみで用いてもよく、又左右方向Ｘの地震動に対す
る免震装置として説明した免震装置６、７及び１０は直
交する上下段の二段重ねとして二方向向けとして用いて
もよい。免震装置６の下部案内部材５１及び上部案内部
材５２を、免震装置８の下部案内部材８１及び上部案内
部材８２と同様に凹状部の一対を直列に連設するか離隔
位置に配置した構成とすることもできる。免震装置５〜
９においては、各転動体は一個又は一対を組として用い
ているが、複数個又は複数対用いることにより耐荷重を
増大することができる。又免震装置６の支持部材６３に
免震装置５で説明した小車輪の組合わせ又は免震装置８
のリンク機構を付加することにより転動体３の転動を規
制することとしてもよい。Although the rolling elements 3 are used in the seismic isolation devices 5 to 8, other rolling elements may be used.
The upper and lower two-tiered seismic isolation devices 5 and 8 as the seismic isolation device for the front and rear direction Y may be used in only one direction for one direction. The seismic isolation devices 6, 7, and 10 described above may be used in two directions as two-tiered upper and lower rows that are orthogonal to each other. The lower guide member 51 and the upper guide member 52 of the seismic isolation device 6 are configured such that a pair of concave portions are connected in series or arranged at a separated position similarly to the lower guide member 81 and the upper guide member 82 of the seismic isolation device 8. It can also be. Seismic isolation device 5
In 9, each rolling element is used as one or a pair, but the load resistance can be increased by using a plurality or a plurality of pairs. Also, a combination of the small wheels described in the seismic isolation device 5 or the seismic isolation device 8
The rolling of the rolling element 3 may be restricted by adding the link mechanism described above.

【００２２】以下において、本発明の転動体及び免震装
置の作動について説明する。先ず図１１について、各種
転動体を用いた従来例及び本発明の免震装置において被
支持体Ｈ側の上部案内部材５２から支持体Ｇ側の下部案
内部材５１に至る被支持体Ｈの荷重Ｗの伝わり方（反力
は省略）を模式的に矢印で示したものである。（ｄ）
は、従来例のころタイプであって荷重Ｗは、上部案内部
材５２→ころＫ→下部案内部材５１へと直接伝えられ
る。このため、ころＫの転動に対する減衰力は積極的に
は発生しない。（ｅ）は、従来例の車輪タイプであって
荷重Ｗは、上部案内部材は使用しないので、被支持体Ｈ
→支持アームＡ→軸１３→車輪Ｓ→下部案内部材５１へ
と軸１３、軸受け１２を介して伝えられる。このため、
車輪Ｓの転動に対する減衰力が軸１３と軸受け１２との
摩擦により発生する。（ａ）は、本発明の転動体１であ
って荷重Ｗは、本体部材１１の分離された２個のセグメ
ント部１１ａ及び切れ目のある軸受け１２の存在によっ
て、上部案内部材５２→セグメント部１１ａ上側→軸受
け１２上面→軸１３→軸受け１２下面→セグメント部１
１ａ下側→下部案内部材５１へとセグメント部１１ａ、
軸受け１２、軸１３を介して伝えられる。このため、本
体部材３１の転動に対する減衰力が軸１３と軸受け１２
との摩擦により発生する。（ｂ）は、本発明の転動体３
であって荷重Ｗは、本体部材３１の分離された４個のセ
グメント部３１ａ及び軸受け１２の存在によって、上部
案内部材５２→セグメント部３１ａ上側→左右別れて軸
受け１２上面→軸１３→軸受け１２下面→左右別れてセ
グメント部３１下側→下部案内部材５１へとセグメント
部３１ａ、軸受け１２、軸１３を介して伝えられる。
（ａ）と同様に減衰力が発生する。（ｃ）は、（ｂ）か
ら僅かに回動した転動体３の他例であって荷重Ｗは、本
体部材３１の分離された４個のセグメント部３１ａ及び
軸受け１２の存在によって、上部案内部材５２→セグメ
ント部３１ａ上側→軸受け１２上面→軸１３→軸受け１
２下面→セグメント部３１ａ下側→下部案内部材５１へ
とセグメント部３１ａ、軸受け１２、軸１３を介して伝
えられる。（ａ）と同様に減衰力が発生する。（ｂ）、
（ｃ）では、セグメント部３１ａ及び軸受け１２が荷重
Ｗによって僅かに変形状態となることを模式的にやや誇
張して示してある。The operation of the rolling element and the seismic isolation device of the present invention will be described below. First, referring to FIG. 11, the load W of the supported body H from the upper guide member 52 on the supported body H side to the lower guide member 51 on the support body G side in the conventional example and the seismic isolation device of the present invention using various rolling elements. (Reaction force is omitted) is schematically indicated by an arrow. (D)
Is a conventional roller type, and the load W is directly transmitted to the upper guide member 52 → the roller K → the lower guide member 51. For this reason, the damping force against the rolling of the roller K is not positively generated. (E) is a conventional wheel type, and the load W is not supported by the upper guide member.
→ Support arm A → Shaft 13 → Wheel S → Transfer to lower guide member 51 via shaft 13 and bearing 12. For this reason,
A damping force against rolling of the wheel S is generated by friction between the shaft 13 and the bearing 12. (A) is the rolling element 1 of the present invention, and the load W is increased by the upper guide member 52 → the upper part of the segment part 11a due to the presence of the two segment portions 11a and the notched bearing 12 of the main body member 11. → bearing 12 upper surface → shaft 13 → bearing 12 lower surface → segment part 1
1a lower side → segment portion 11a to lower guide member 51,
It is transmitted through the bearing 12 and the shaft 13. For this reason, the damping force against the rolling of the main body member 31 is reduced by the shaft 13 and the bearing 12.
It is caused by friction with (B) shows the rolling element 3 of the present invention.
The load W is controlled by the presence of the four separated segment portions 31a and the bearing 12 of the main body member 31, the upper guide member 52 → the upper portion of the segment portion 31 → separated left and right, the upper surface of the bearing 12 → the shaft 13 → the lower surface of the bearing 12 → Separated to the left and right, the lower side of the segment portion 31 → The lower guide member 51 is transmitted via the segment portion 31a, the bearing 12, and the shaft 13.
A damping force is generated as in (a). (C) is another example of the rolling element 3 slightly rotated from (b), and the load W is increased by the presence of the four separated segment portions 31 a of the main body member 31 and the bearing 12. 52 → the upper part of the segment portion 31a → the upper surface of the bearing 12 → the shaft 13 → the bearing 1
2 Lower surface → segment portion 31a lower side → lower guide member 51 is transmitted via segment portion 31a, bearing 12 and shaft 13. A damping force is generated as in (a). (B),
In (c), the fact that the segment portion 31a and the bearing 12 are slightly deformed by the load W is schematically and slightly exaggerated.

【００２３】次に、図６、７によって第１例の免震装置
５の作動を説明する。図６は上下二段で基準状態、図７
は図６上段のみの地震発生時を示してあり、先ず簡略化
して左右方向Ｘに対する上段のみについて説明する。地
震動非作動時の図６（ｂ）に示す基準状態では、表面材
３５の表面と下部案内部材５１及び上部案内部材５２と
の接触部分はそれぞれ下部案内部材５１の最低部分及び
上部案内部材５２の最高部分にあり、各小車輪５３ｃの
固定軸５３ｄ軸芯はその接触部分から左右等間隔の位置
にあって、被支持体Ｈは最低レベル位置において支持体
Ｇ上方に安定状態で静止している。左右方向Ｘの地震動
が発生し支持体Ｇが振動した場合には、図７に示す様に
本体部材３１は軸１３回りに回動しつつ表面材３５を介
して下部案内部材５１及び上部案内部材５２に沿い左右
方向Ｘに相対的に転動し、軸１３は回動することなく下
部案内部材５１及び上部案内部材５２に沿う小車輪５３
ｃの転動によって左右方向Ｘに揺動し、被支持体Ｈは僅
かに上昇して最高レベル位置に達し、被支持体Ｈは基準
状態の最低レベル位置からの変位に応じた復元力をうけ
振動を繰り返す。ここで、被支持体Ｈの荷重は図１１
（ｂ）（ｃ）について前記した通り、直接支持体Ｇに達
せず必ず軸受け１２及び軸１３を経由するので相互の摩
擦が減衰力として有効に作用し、免震作用が働く。ここ
で図６に示すのは、免震装置５の１ユニットを左右方向
Ｘ及び前後方向Ｙの直交する上下二段重ねとし、上段ユ
ニットは左右方向Ｘ及び下段ユニットは前後方向Ｙの免
震作用が働き、左右方向Ｘ及び前後方向Ｙの直交する二
方向成分を含む地震動に対しては合成されて相対的に転
動しあらゆる方向に免震作用が働く。又前記従来の技術
で「ころタイプ」の特徴として説明した通り、例えば阪
神淡路大震災クラスの地震動に対する免震装置として
は、全ストロークは約５００ｍｍとして一個の案内部材
（従来の技術「ころタイプ」の説明でのレールに相当す
る）の全長として約２５０ｍｍで、地震動に安定的に対
応するためには案内部材一対で合計全長約５００ｍｍに
選定すればよく、案内部材の長さは短くて済む上に、従
来の技術で「車輪タイプ」の特徴として説明した通り、
転動体と一体化した軸受けと軸の摩擦が減衰力として有
効に作用するため、特別な減衰装置を必要とせず、被支
持体の重量変化に対し免震性能が変わらず、小型で余分
な減衰力の付加装置を必要としない前記「ころタイプ」
と「車輪タイプ」の特徴を合わせ持った免震用転動体及
びこれを用いた免震装置であることを示している。Next, the operation of the first example of the seismic isolation device 5 will be described with reference to FIGS. FIG. 6 shows a reference state in upper and lower two stages, and FIG.
6 shows the time of the occurrence of an earthquake in only the upper part of FIG. 6. First, only the upper part in the left-right direction X will be described in a simplified manner. In the reference state shown in FIG. 6B when the seismic motion is not activated, the contact portions between the surface of the surface material 35 and the lower guide member 51 and the upper guide member 52 are the lowest part of the lower guide member 51 and the upper guide member 52, respectively. In the highest position, the fixed shaft 53d of each small wheel 53c is located at a position equidistant from the contact portion in the right and left direction, and the supported member H is stably stationary above the support member G at the lowest level position. . In the case where the support G vibrates due to the occurrence of the seismic motion in the left-right direction X, the main body member 31 rotates about the axis 13 and the lower guide member 51 and the upper guide member via the surface material 35 as shown in FIG. The roller 13 relatively rolls in the left-right direction X along the axis 52, and the small wheel 53 along the lower guide member 51 and the upper guide member 52 without rotating the shaft 13.
Due to the rolling of c, it swings in the left-right direction X, the supported body H slightly rises and reaches the highest level position, and the supported body H receives a restoring force corresponding to the displacement from the lowest level position in the reference state. Repeat the vibration. Here, the load of the supported member H is shown in FIG.
(B) As described above with respect to (c), the friction does not reach the support G directly but always passes through the bearing 12 and the shaft 13, so that the mutual friction effectively acts as a damping force, and the seismic isolation function works. Here, FIG. 6 shows that one unit of the seismic isolation device 5 is a vertically stacked two-tiered unit that is orthogonal to the left-right direction X and the front-rear direction Y, and the upper unit is the left-right direction X and the lower unit is the seismic isolation function in the front-rear direction Y. Works, and the seismic motion including two orthogonal components in the left-right direction X and the front-rear direction Y is synthesized and rolls relatively to perform seismic isolation in all directions. As described above as a feature of the "roller type" in the prior art, for example, as a seismic isolation device for earthquake motion of the Hanshin-Awaji Great Earthquake class, the total stroke is about 500 mm and one guide member (the conventional "roller type") is used. The total length of the guide member is about 250 mm, and in order to respond stably to the seismic motion, the total length of the pair of guide members may be selected to be about 500 mm, and the length of the guide member may be short. As described in the prior art as a feature of the "wheel type",
Because the friction between the bearing and the shaft integrated with the rolling element effectively acts as a damping force, no special damping device is required, and the seismic isolation performance does not change with changes in the weight of the supported body, and it is small and extra damping. The above-mentioned "roller type" which does not require additional equipment for force
It shows that this is a seismic isolation rolling element having the characteristics of a "wheel type" and a seismic isolation device using the same.

【００２４】又転動体１では、本体部材１１は一対のセ
グメント部１１ａを組合わせて用い、通常表面全周の約
半分以下だけ転動するようにして使用されるので外径Ｄ
が１５ｃｍ〜３０ｃｍと大型で、主として比較的重荷重
向けである。一方転動体２、３、４では、４個のセグメ
ント部２１ａ、３１ａ、４１ａを組合わせて用い、複数
回の転動中に各セグメント部にかかる力の方向が分散さ
れ転動し易くしてあり、小型で比較的軽又は中荷重向け
である。又転動体２、３では周囲及び端部を密閉構造と
しているので、内部腐蝕の心配がなく耐蝕性材料を用い
ず内部に潤滑油を充填することができ保守点検を簡略化
できる。第２例乃至第４例の免震装置６乃至８の作動も
概ね前記免震装置５と同様である。特に免震装置６は、
転動体３一対が一体で用いられるので耐荷重が増えても
転動体３の１個当たりの耐荷重を減少可能である。免震
装置７は、リンクを組合わせた支持部材７３によって規
制された軸１３の軸芯が常時上部案内部材５２と下部案
内部材５１のピン軸芯の中点位置に維持されるので、姿
勢を安定的に作動可能である。免震装置８は、免震装置
６、７の特徴を合わせ持っている。In the rolling element 1, the main body member 11 is used in combination with a pair of segment portions 11a and is normally used so as to roll by about half or less of the entire circumference of the surface.
Are as large as 15 cm to 30 cm, and are mainly intended for relatively heavy loads. On the other hand, in the rolling elements 2, 3, and 4, the four segments 21a, 31a, and 41a are used in combination to disperse the direction of the force applied to each segment during a plurality of rolling operations to facilitate rolling. Yes, small and relatively light or medium load. In addition, since the rolling elements 2 and 3 have a closed structure at the periphery and at the end, there is no need to worry about internal corrosion and the interior can be filled with lubricating oil without using a corrosion-resistant material, thereby simplifying maintenance and inspection. The operations of the seismic isolation devices 6 to 8 of the second to fourth examples are also substantially the same as those of the seismic isolation device 5. Especially the seismic isolation device 6
Since a pair of rolling elements 3 are used integrally, even if the load resistance increases, the load resistance per rolling element 3 can be reduced. In the seismic isolation device 7, since the axis of the shaft 13 regulated by the support member 73 combined with the link is always maintained at the midpoint of the pin axes of the upper guide member 52 and the lower guide member 51, the posture is maintained. It can operate stably. The seismic isolation device 8 has the characteristics of the seismic isolation devices 6 and 7.

【００２５】本発明第５例の転動体９を用いた図１２
（ｃ）（ｄ）に示す本発明第５例の免震装置１０は、前
記した転動体１を用いた場合と同様に重荷重に用いら
れ、本体部材９１は軸１３回りに半回転を超えない範囲
で回動しつつ表面平坦な下部案内部材１０１及び上部案
内部材１０２に沿って左右方向Ｘに転動し、それと同時
に図示省略した支持部材に固着された軸１３は回動する
ことなく支持部材と共に左右方向Ｘに揺動可能とされて
いる。ここで、セグメント部９１ａ表面を上下寸詰まり
の断面略鍋底形の湾曲面に選定することにより下部案内
部材１０１及び上部案内部材１０２は表面を平坦又はこ
れに近似した形状とすることができるので、案内部材の
製造が容易となる。FIG. 12 using the rolling element 9 of the fifth embodiment of the present invention.
(C) The seismic isolation device 10 of the fifth example of the present invention shown in (d) is used for heavy load as in the case of using the rolling element 1 described above, and the main body member 91 exceeds half a rotation around the axis 13. While rotating in a range that does not exist, it rolls in the left-right direction X along the lower guide member 101 and the upper guide member 102 having a flat surface, and at the same time, the shaft 13 fixed to a support member (not shown) is supported without rotating. It is swingable in the left-right direction X together with the member. Here, the lower guide member 101 and the upper guide member 102 can have a flat surface or a shape similar to the surface by selecting the surface of the segment portion 91a as a curved surface having a substantially pot-bottomed cross section with a vertical clogging. The guide member can be easily manufactured.

【００２６】[0026]

【発明の効果】本発明の免震用転動体によればころタイ
プと同様の小型でありながら車輪タイプと同様に摩擦を
減衰力として有効に作用せしめることができ、この転動
体を用いた免震装置は被支持体の重量変化に対し免震性
能が変わらず、減衰力の付加装置を必要とせず、簡易小
型の構造で十分な強度が得られ、一般家庭品、ＯＡ機
器、医療機器、美術品等の器物の軽荷重用から、省スペ
ース条件下の電算機、機械、建築物、橋梁等の中乃至重
荷重用まで、幅広く適応可能である。According to the rolling element for seismic isolation of the present invention, friction can be effectively applied as a damping force similarly to the wheel type, though it is as small as the roller type, and the rolling element using this rolling element can be used. The seismic isolation device does not change its seismic isolation performance against changes in the weight of the supported body, does not require an additional device for damping force, has sufficient strength with a simple and compact structure, and can be used for general household goods, OA equipment, medical equipment, It can be widely used for light loads of objects such as works of art, and for medium to heavy loads of computers, machines, buildings, bridges, etc. under space-saving conditions.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の転動体の第１例を示し（ａ）組立状態
で右半分は側面図で左半分は縦断面図、（ｂ）組立正面
図、（ｃ）本体部材の一部平面図、（ｄ）本体部材の一
部分解側面図、（ｅ）（ｄ）の正面図、（ｆ）軸受け材
の側面図、（ｇ）軸受け材の正面図である。FIGS. 1A and 1B show a first example of a rolling element according to the present invention, in which (a) the right half is a side view, the left half is a longitudinal sectional view, (b) an assembly front view, and (c) a partial plane of a main body member in an assembled state. FIG. 3D is a partially exploded side view of the main body member, FIG. 4E is a front view of FIG. 4D, FIG. 5F is a side view of the bearing material, and FIG. 4G is a front view of the bearing material.

【図２】本発明の転動体の第２例を示し（ａ）組立状態
で右半分は側面図で左半分は縦断面図、（ｂ）Ａ・Ａ線
断面図、（ｃ）本体部材の一部分解側面図、（ｄ）
（ｃ）の一部分解正面図、（ｅ）軸受け材の側面図、
（ｆ）軸受け材の正面図、（ｇ）端面部材の側面図、
（ｈ）端面部材の正面図、（ｉ）締付け材の正断面図で
右半分は一部省略してある。FIG. 2 shows a second example of the rolling element of the present invention. (A) In an assembled state, the right half is a side view, the left half is a longitudinal sectional view, (b) a sectional view taken along line AA, (c) a body member. Partially exploded side view, (d)
(C) a partially exploded front view, (e) a side view of the bearing material,
(F) a front view of the bearing material, (g) a side view of the end face member,
(H) A front view of the end face member, and (i) a front sectional view of the fastening member, with a right half partially omitted.

【図３】本発明の転動体の第３例を示し（ａ）組立状態
で右半分は側面図で左半分は縦断面図、（ｂ）Ｂ・Ｂ線
断面図である。3A and 3B show a third example of the rolling element of the present invention, in which (a) the right half is a side view, the left half is a longitudinal sectional view, and (b) is a sectional view taken along line BB in an assembled state.

【図４】本発明の転動体の第４例を示し（ａ）組立側面
図、（ｂ）組立正面図、（ｃ）本体部材の一部分解側面
図、（ｄ）本体部材の一部分解正面図、（ｅ）軸受け材
の側面図、（ｆ）軸受け材の正面図である。FIGS. 4A and 4B show a fourth example of a rolling element according to the present invention, wherein FIG. 4A is an assembled side view, FIG. 4B is an assembled front view, FIG. 4C is a partially exploded side view of a main body member, and FIG. (E) is a side view of the bearing material, and (f) is a front view of the bearing material.

【図５】図４（ａ）の拡大したＣ・Ｃ線断面図である。FIG. 5 is an enlarged sectional view taken along the line CC in FIG. 4 (a).

【図６】基準状態にある本発明の転動体を直交する二段
重ねとした免震装置の第１例を示し（ａ）上段の上部案
内部材を除いた平面図、（ｂ）正面図である。FIGS. 6A and 6B show a first example of a seismic isolation device in which rolling elements of the present invention in a reference state are stacked in a two-stage configuration orthogonal to each other, (a) a plan view excluding an upper guide member in an upper stage, and (b) a front view. is there.

【図７】図６（ｂ）に示す免震装置第１例の一部の地震
発生時の状態を示す正面図である。FIG. 7 is a front view showing a part of the first example of the seismic isolation device shown in FIG. 6B when an earthquake occurs.

【図８】基準状態にある本発明の免震装置の第２例を示
し（ａ）左半分は上部案内部材を除いた平面図で右半分
はＤ・Ｄ線断面の平面図、（ｂ）正面図である。FIG. 8 shows a second example of the seismic isolation device of the present invention in a reference state. (A) The left half is a plan view excluding an upper guide member, and the right half is a plan view of a cross section taken along a line DD, (b). It is a front view.

【図９】基準状態にある本発明の免震装置の第３例を示
し（ａ）平面図、（ｂ）正面図である。9A is a plan view and FIG. 9B is a front view of a third example of the seismic isolation device of the present invention in a reference state.

【図１０】基準状態にある本発明の免震装置の第４例を
示し（ａ）上段の上部案内部材を除いた平面図、（ｂ）
正面図である。FIG. 10 shows a fourth example of the seismic isolation device of the present invention in a reference state, (a) a plan view excluding an upper guide member in an upper stage, and (b).
It is a front view.

【図１１】本発明の転動体の荷重の掛かり方を模式的に
示し（ａ）本発明の第１例正面図、（ｂ）（ｃ）本発明
の第２例正面図、（ｄ）従来例ころタイプの正面図、
（ｅ）従来例車輪タイプの正面図である。FIGS. 11A and 11B schematically show how a load is applied to a rolling element of the present invention. FIG. 11A is a front view of a first example of the present invention, FIG. 11B is a front view of a second example of the present invention, and FIG. Front view of example roller type,
(E) It is a front view of the conventional example wheel type.

【図１２】本発明の転動体の第５例を示し（ａ）組立状
態の縦断面図、（ｂ）組立正面図である。又本転動体を
用いた免震装置の第５例の略図を示し（ｃ）基準状態の
正面図、（ｄ）地震発生時の正面図である。12A and 12B show a fifth example of a rolling element according to the present invention, in which FIG. 12A is a longitudinal sectional view in an assembled state, and FIG. In addition, a schematic view of a fifth example of a seismic isolation device using the present rolling elements is shown, (c) is a front view in a reference state, and (d) is a front view at the time of occurrence of an earthquake.

【図１３】本発明の転動体の他例を説明する正面視の模
式的断面図で、（ａ）セグメント部の変形例、（ｂ）転
動体の第１例、（ｃ）乃至（ｆ）転動体の他の変形例で
ある。FIG. 13 is a schematic cross-sectional view in front view illustrating another example of the rolling element of the present invention, in which (a) a modified example of the segment portion, (b) a first example of the rolling element, and (c) to (f). It is another modification of a rolling element.

【符号の説明】[Explanation of symbols]

１、２、３、４、９ 転動体 １１、２１、３１、４１、９１ 本体部材 １１ａ、１５ａ、１５ｂ、２１ａ、３１ａ、４１ａ、９
１ａ セグメント部 １１ｂ、２１ｂ、９１ｂ 縁部 １１ｃ、２１ｃ、２２ｃ、９１ｃ 溝部 １１ｄ、２１ｄ、３１ｄ、４１ｄ、９１ｄ 円弧状面 １１ｅ、２１ｆ、３１ｆ、４１ｆ、９１ｅ 水平面 １２、１２′ 軸受け １２ａ 切れ目 １２ｂ 軟質部分 １３ 軸 １４、２４ 締付具 ２１ｇ、３１ｇ、４１ｇ 垂直面 ２２ 端縁部材 ２２ａ 蓋 ２２ｂ フランジ ２２ｈ、２２ｉ Ｏリング ２５、３５ 表面材 ４４ 固着具 ５、６、７、８、１０ 免震装置 ５１、８１、１０１ 下部案内部材 ５２、８２、１０２ 上部案内部材 ５３、６３、７３、８３ 支持部材 ５３ａ 基部 ５３ｃ 小車輪 ８４ リンク部 ７３ａ、８４ａ 中部リンク ７３ｂ、８４ｂ 上部リンク ７３ｃ、８４ｃ 下部リンク ７３ｄ、７３ｅ、７３ｆ、７３ｇ ピン ８１ａ、８１ｂ 凹状部 ８１ｃ、８２ｃ 水平部 ｈ 高さ、幅 Ｇ 支持体 Ｈ 被支持体 Ｑ 軸芯 Ｒ 半径 Ｔ 距離 Ｗ 荷重 Ｘ 左右方向 Ｙ 前後方向1, 2, 3, 4, 9 Rolling element 11, 21, 31, 41, 91 Body member 11a, 15a, 15b, 21a, 31a, 41a, 9
1a Segment portion 11b, 21b, 91b Edge portion 11c, 21c, 22c, 91c Groove portion 11d, 21d, 31d, 41d, 91d Arc-shaped surface 11e, 21f, 31f, 41f, 91e Horizontal surface 12, 12 'Bearing 12a Break 12b Soft portion 13 Axis 14, 24 Fastener 21g, 31g, 41g Vertical surface 22 Edge member 22a Cover 22b Flange 22h, 22i O-ring 25, 35 Surface material 44 Fixing device 5, 6, 7, 8, 10 Seismic isolation device 51, 81, 101 Lower guide member 52, 82, 102 Upper guide member 53, 63, 73, 83 Support member 53a Base 53c Small wheel 84 Link portion 73a, 84a Middle link 73b, 84b Upper link 73c, 84c Lower link 73d, 73e, 73f, 73g Pin 81a, 81b Recessed portion 81c, 82c Horizontal portion h Height, width G Support H Supported object Q Axis R Radius T Distance W Load X Left-right direction Y Front-back direction

Claims (16)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】 対向する上部及び下部案内部材間に介在
し転動可能な免震用転動体において、軸芯回りに円筒状
中空部をもった円筒体を該軸芯又は該中空部内において
該軸芯に平行する線を含む平面に沿って複数個に分割し
境界面をそれぞれ僅かに切除し芯部に円弧状面をもった
断面略扇形セグメント部の該複数個を組合わせた本体部
材と、前記円弧状面に嵌合し少なくとも１個の僅かな切
れ目又は軟質部分を有する中抜き円筒状軸受けと該軸受
けに装着された軸と、組付け部材とを備え、前記軸受け
の周面に前記各セグメント部をそれぞれ隣接配列して前
記組付け部材によって該各セグメント部外周面が同径の
円弧面上にあるように組付け、前記本体部材は前記軸受
けを介して前記軸回りに回動可能としたことを特徴とす
る免震用転動体。1. A seismic isolation rolling element interposed between opposing upper and lower guide members and capable of rolling, wherein a cylindrical body having a cylindrical hollow portion around an axis is formed in the shaft core or the hollow portion. A body member which is divided into a plurality of pieces along a plane including a line parallel to the axis, cuts off each of the boundary surfaces slightly, and has a plurality of substantially sector-shaped cross-section segments each having an arcuate surface in the core; A hollow cylindrical bearing fitted to the arcuate surface and having at least one slight cut or soft portion, a shaft mounted on the bearing, and an assembling member; The respective segment portions are arranged adjacent to each other and assembled by the assembling member such that the outer peripheral surfaces of the respective segment portions are on an arc surface having the same diameter, and the main body member is rotatable around the axis via the bearing. A rolling element for seismic isolation, characterized in that: 【請求項２】 請求項１に記載の免震用転動体におい
て、それぞれ単体で形成された各セグメント部を組付け
部材により組付けたことを特徴とする免震用転動体。2. The rolling element for seismic isolation according to claim 1, wherein each of the segments formed individually is assembled by an assembling member. 【請求項３】 軸受けを廃して直接軸と又は軸に固着さ
れた切れ目を有しない軸受けと本体部材の各セグメント
部の円弧状面とを摺動可能としたことを特徴とする請求
項１又は２に記載の免震用転動体。3. The bearing according to claim 1, wherein the bearing is eliminated so that the shaft or the unfixed bearing fixed to the shaft and the arc-shaped surface of each segment of the main body member can be slid. 2. The rolling element for seismic isolation according to 2. 【請求項４】 組付け部材として各セグメント部の外表
面に合わせて嵌着可能な薄肉筒状体の表面材を用いたこ
とを特徴とする請求項１〜３のいずれかに記載の免震用
転動体。4. The seismic isolation device according to claim 1, wherein a surface material of a thin-walled cylindrical body that can be fitted to an outer surface of each segment portion is used as an assembling member. Rolling element. 【請求項５】 表面材端部をセグメント部端部より突出
させ該セグメント部端面及び表面材内側とで形成される
空間に外周及び内周にシール材が装着された端縁部材を
圧入することにより該空間の軸受け及び軸回りを密封可
能としたことを特徴とする請求項４に記載の免震用転動
体。5. An edge member having a sealing material mounted on an outer periphery and an inner periphery is press-fitted into a space formed by an end surface of a surface material from an end of a segment portion and an end surface of the segment portion and an inner surface of the surface material. 5. The rolling element for seismic isolation according to claim 4, wherein the bearing and the circumference of the shaft can be sealed by the space. 【請求項６】 組付け部材として各セグメント部端部よ
りの張出し縁部又は各セグメント部端部の周方向に刻ま
れた溝部に圧入可能で該セグメント部表面より突出しな
い高さで弾力を有する締付具を用いたことを特徴とする
請求項１〜５のいずれかに記載の免震用転動体。6. An assembling member which can be press-fitted into a protruding edge from each segment end or a groove formed in the circumferential direction of each segment end and has elasticity at a height not protruding from the surface of the segment. The seismic isolation rolling element according to any one of claims 1 to 5, wherein a fastener is used. 【請求項７】 組付け部材として各セグメント部の隣接
する境界面同士を組合わせ該各セグメント部表面に刳ら
れた座に突出しない高さで軸芯方向に対し直角の複数の
固着具を用いたことを特徴とする請求項１〜５のいずれ
かに記載の免震用転動体。7. An assembling member comprising a plurality of fasteners which are formed by combining adjacent boundary surfaces of respective segment portions with each other and having a height which does not protrude into a seat formed on the surface of each segment portion and which is perpendicular to the axial center direction. The rolling element for seismic isolation according to any one of claims 1 to 5, characterized in that: 【請求項８】 請求項１〜７のいずれかに記載の免震用
転動体において、セグメント部として断面形状を上下方
向がこれと垂直な左右方向より短寸で該上下方向及び左
右方向対称の略鍋底形湾曲面で形成された筒状体を上下
対称に二分割し境界面をそれぞれ僅かに切除し芯部に円
弧状面をもった単位ユニット一対の向合わせの組合わ
せ、又は前記単位ユニットを軸芯方向に直列配設した連
設ユニットと該単位ユニットとを隣接する各ユニットの
継ぎ目が重ならないように向合わせての組合わせとした
ことを特徴とする免震用転動体。8. The seismic isolation rolling element according to any one of claims 1 to 7, wherein the cross-sectional shape of the segment portion is smaller in the vertical direction than in the horizontal direction perpendicular to the segment, and is symmetrical in the vertical and horizontal directions. A cylindrical body formed by a substantially pan-bottomed curved surface is vertically symmetrically divided into two, and the boundary surfaces are slightly cut off, and the core unit has an arc-shaped surface. A seismic isolation rolling element characterized in that a continuous unit and a unit unit are arranged in series in the axial direction so as to face each other so that seams of adjacent units do not overlap. 【請求項９】 支持体と被支持体間に介在して装着さ
れ、前記支持体側に固設され振動域の中央部が最低部分
をなす凹状の下部案内部材と、前記被支持体側に固設さ
れ振動域の中央部が最高部分をなす凹状の前記下部案内
部材に向合わせて配設された上部案内部材と、前記各案
内部材に装着された請求項１〜８のいずれかに記載の免
震用転動体と、軸を固着する支持部材とを備え、地震動
により前記転動体の本体部材が前記軸回りに回動しつつ
前記各案内部材に沿って転動し該各軸は前記支持部材と
共に揺動可能とされて前記被支持体を一方向の免震可能
としたことを特徴とする免震装置。9. A concave lower guide member mounted between the support and the supported body and fixed to the support side and having a center portion of a vibration region forming a minimum part, and fixed to the supported body side. 9. The expulsion device according to claim 1, wherein an upper guide member is provided so as to face the concave lower guide member having a central portion of a vibration region forming a highest portion, and is mounted on each of the guide members. A seismic rolling element, and a support member for fixing a shaft, wherein the main body member of the rolling element rolls along the guide members while rotating around the axis by seismic motion, and each shaft is connected to the support member. A seismic isolation device characterized by being capable of swinging together with the supported member so that the supported member can be isolated in one direction. 【請求項１０】 支持体と被支持体間に介在して装着さ
れ、前記支持体側に固設された表面平坦な下部案内部材
と、前記被支持体側に固設され前記下部案内部材に向合
わせて配設された表面平坦な上部案内部材と、前記各案
内部材に装着された請求項８に記載の免震用転動体と、
軸を固着する支持部材とを備え、地震動により前記転動
体の本体部材が前記軸回りに半回転を超えない範囲で回
動しつつ前記各案内部材に沿って転動し該各軸は前記支
持部材と共に揺動可能とされて前記被支持体を一方向の
免震可能としたことを特徴とする免震装置。10. A lower surface guide member fixedly mounted on the supporter side, which is mounted between the supporter and the supported member, and opposed to the lower guide member fixedly mounted on the supporter side. An upper guide member having a flat surface and a rolling element for seismic isolation according to claim 8 attached to each of the guide members;
A supporting member for fixing the shaft, wherein the main body member of the rolling element rolls along the guide members while rotating within a range not exceeding half a rotation around the axis due to the seismic motion, and the shafts support the shaft. A seismic isolation device characterized by being capable of swinging together with a member so that the supported body can be isolated in one direction. 【請求項１１】 支持部材は一対の剛性材で基部の上下
左右対称位置４隅部に転動体の軸と平行な支軸をもった
回動自在な小車輪を有し、前記各基部中央部に前記転動
体の軸両端部が固着され、前記各小車輪は各案内部材に
沿って転動可能に装着され、地震動により前記転動体の
本体部材が前記軸回りに回動しつつ前記各案内部材に沿
って転動し該軸は前記支持部材と共に揺動可能とされて
いることを特徴とする請求項９又は１０に記載の免震装
置。11. The support member comprises a pair of rigid members and has rotatable small wheels having support shafts parallel to the axis of the rolling element at four corners of the base which are symmetrical in the vertical and horizontal directions. Both ends of the shaft of the rolling element are fixed to each other, and each of the small wheels is rotatably mounted along each guide member, and the main body member of the rolling element is rotated around the axis by seismic motion, and each of the guides is rotated. The seismic isolation device according to claim 9 or 10, wherein the shaft rolls along the member and the shaft is swingable together with the support member. 【請求項１２】 支持部材は各一対の中部リンク、上部
リンク及び下部リンクを有し、中部リンク中央部に軸両
端部が固着され該中部リンクの等距離上下端部にピンに
よって同じ長さの上部リンク及び下部リンクが回動自在
に連結され、上部リンク上端部が上部案内部材の最高部
分側面及び下部リンク下端部が下部案内部材の最低部分
側面にピンによって回動自在に連結され、地震動により
転動体の本体部材が前記軸回りに回動しつつ前記各案内
部材に沿って転動し該軸は前記支持部材と共に揺動し、
前記軸の軸芯は前記各案内部材のピン軸芯の中点に常時
維持可能とされていることを特徴とする請求項９〜１１
のいずれかに記載の免震装置。12. The support member has a pair of middle links, an upper link, and a lower link. Both ends of the shaft are fixed to the center of the middle link, and the same length is fixed to the upper and lower ends of the middle link by pins. The upper link and the lower link are rotatably connected, and the upper link upper end is rotatably connected to the highest part side surface of the upper guide member and the lower link lower end part to the lowest part side surface of the lower guide member by a pin. The body member of the rolling element rolls along each of the guide members while rotating around the axis, and the shaft swings with the support member,
The shaft center of the shaft can be always maintained at a center point of the pin shaft center of each of the guide members.
The seismic isolation device according to any of the above. 【請求項１３】 支持部材は複数の剛性材で、平行に間
隔をおいた複数の転動体の少なくとも軸両端部が前記支
持部材に固着され、地震動により前記転動体の各本体部
材が前記各軸回りに回動しつつ各案内部材に沿って転動
し該各軸は前記支持部材と共に揺動可能とされているこ
とを特徴とする請求項９又は１０に記載の免震装置。13. A support member comprising a plurality of rigid members, at least both ends of a plurality of parallel rolling members are fixed to said support member, and each body member of said rolling member is fixed to each said shaft member by seismic motion. The seismic isolation device according to claim 9 or 10, wherein the shaft is rotated along each guide member while rotating around, and each shaft is swingable together with the support member. 【請求項１４】 請求項１３に記載の免震装置におい
て、下部案内部材は長手方向に離隔又は密接し複数区分
され該各区分の振動域の中央部が最低部分であって両端
部に向って徐々に高くなる凹状の形状に形成され、上部
案内部材は長手方向に離隔又は密接し複数区分され該各
区分の振動域の中央部が最高部分であって両端部に向っ
て徐々に低くなる凹状の形状に形成され、前記各区分毎
に転動体がそれぞれ装着されていることを特徴とする免
震装置。14. The seismic isolation device according to claim 13, wherein the lower guide member is divided into a plurality of sections spaced apart or closely in the longitudinal direction, and the center of the vibration area of each section is the lowest part and is directed toward both ends. The upper guide member is formed in a concave shape that gradually increases in height, and the upper guide member is separated or closely spaced in the longitudinal direction and is divided into a plurality of sections, and the central portion of the vibration region of each section is the highest portion and gradually decreases toward both ends. A seismic isolation device characterized in that the rolling elements are mounted on each of the sections, respectively. 【請求項１５】 請求項１３又は１４に記載の免震装置
において、各一対の中部リンク、上部リンク及び下部リ
ンクよりなるリンク部を有し、各区分毎に装着された転
動体の各軸が固着された剛性材の支持部材の一点がピン
によって前記中部リンク中央部に回動自在に連結され、
前記中部リンクの等距離上下端部にピンによって同じ長
さの上部リンク及び下部リンクが回動自在に連結され、
前記上部リンク上端部が上部案内部材側面において且つ
前記下部リンク下端部が下部案内部材側面においてそれ
ぞれ前記支持部材の一点の上下対称位置にピンによって
回動自在に連結され、地震動により前記転動体の各本体
部材が前記各軸回りに回動しつつ前記各区分毎の各案内
部材に沿って転動し該各軸は前記支持部材と共に揺動
し、前記支持部材の一点は前記各案内部材のピン軸芯の
中点に常時維持可能とされていることを特徴とする免震
装置。15. The seismic isolation device according to claim 13 or 14, further comprising a link portion including a pair of middle links, an upper link, and a lower link, wherein each shaft of the rolling element mounted for each section is provided. One point of the fixed rigid material support member is rotatably connected to the center portion of the middle link by a pin,
An upper link and a lower link of the same length are rotatably connected to the equidistant upper and lower ends of the middle link by pins,
The upper link upper end is connected to the upper guide member side surface and the lower link lower end portion is rotatably connected to a vertically symmetric position of one point of the support member by a pin at the lower guide member side surface. The main body member rolls along each guide member of each section while rotating around each axis, and each axis swings with the support member, and one point of the support member is a pin of each guide member. A seismic isolation device that can always be maintained at the midpoint of the shaft center. 【請求項１６】 請求項９〜１５のいずれかに記載の免
震装置の一対を下部案内部材及び上部案内部材の転動体
の本体部材転動方向を互いに直角になるよう支持体上に
上下二段重ねして固着し、前記下段下部案内部材を前記
支持体側に固設し前記上段上部案内部材を被支持体側に
固設し、直交する二方向成分を含む地震動により前記各
本体部材がそれぞれ各軸回りに回動しつつ前記各案内部
材に沿って転動し該各軸は支持部材と共に揺動し、前記
被支持体を多方向の免震可能としたことを特徴とする免
震装置。16. The seismic isolation device according to claim 9, wherein a pair of lower and upper guide members are vertically mounted on a support so that the rolling directions of the main body members of the rolling members are perpendicular to each other. The lower and lower guide members are fixed to the support side, and the upper and upper guide members are fixed to the supported member side, and the main body members are respectively fixed by seismic motion including orthogonal two-way components. A seismic isolation device characterized in that it rotates along each of the guide members while rotating around an axis, and each of the shafts swings together with a support member, so that the supported member can be isolated in multiple directions.
JP2000179238A 1999-07-05 2000-06-15 Rolling element for seismic isolation and seismic isolation device using the same Expired - Fee Related JP3213610B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000179238A JP3213610B2 (en) 1999-07-05 2000-06-15 Rolling element for seismic isolation and seismic isolation device using the same

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP18992199 1999-07-05
JP11-189921 1999-07-05
JP2000179238A JP3213610B2 (en) 1999-07-05 2000-06-15 Rolling element for seismic isolation and seismic isolation device using the same

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JP3213610B2 true JP3213610B2 (en) 2001-10-02

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