JP2006153125A

JP2006153125A - Flat plate rubber spring

Info

Publication number: JP2006153125A
Application number: JP2004343849A
Authority: JP
Inventors: Eisaku Hino; 英作日野; Haruo Hino; 晴男日野
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-29
Filing date: 2004-11-29
Publication date: 2006-06-15

Abstract

PROBLEM TO BE SOLVED: To provide a spring member capable of reducing height further and being installed even in a narrow place in a return mechanism between movable structures instead of a return mechanism composed of a conventional coil spring mainly. SOLUTION: This flat plate rubber spring formed by a rubber material and formed like a flat plate body having a right hexagonal shape has a mounting hole in a central part and a mounting hole in a corner part. COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、ゴム素材をもって形成されてなるいわゆるゴムばねに関し、更に詳しくは、多角形平面状をなす平板ゴムばねに関する。
本発明は、特には、可動構造物間の復帰機構に用いて好適な平板ゴムばねに関する。 The present invention relates to a so-called rubber spring formed of a rubber material, and more particularly to a flat rubber spring having a polygonal planar shape.
The present invention particularly relates to a flat rubber spring suitable for use in a return mechanism between movable structures.

嫌振動性の機器を載置する免震床構造に使用される復帰機構は、床構造が狭い空間となることから、可及的丈高の低いばねが好ましく、一般にはコイルばねが使用される。しかし、該コイルばねについてもその取付け構造が複雑化し、かつ、大きなばね定数を得るためには太さに加え比較的大径の差渡し直径を要し、一定の丈高を要することとなる。
更に、貴重品の陳列棚（箱）においても免震機構が組み込まれるが、この場合には特に小型化が要請される。
本発明者らは先に特開２００４−３６８３３号公報において、免震構造を提案したが、当該構造においてもコイルばねを使用するものであり、他に適当な該コイルばねに替る復帰素材の開発を企図するものである。
特開２００４−３６８３３号公報 The return mechanism used for the base-isolated floor structure on which vibration-avoiding equipment is placed is preferably a spring with the lowest possible height because the floor structure becomes a narrow space, and a coil spring is generally used. . However, the mounting structure of the coil spring is also complicated, and in order to obtain a large spring constant, a relatively large diameter is required in addition to the thickness, and a certain height is required.
Furthermore, a seismic isolation mechanism is also incorporated in a display shelf (box) for valuables, but in this case, a reduction in size is particularly required.
The present inventors previously proposed a seismic isolation structure in Japanese Patent Application Laid-Open No. 2004-36833. However, the structure also uses a coil spring, and other appropriate development of a return material to replace the coil spring is proposed. Is intended.
JP 2004-36833 A

本発明は上記実情の鑑みなされたものであり、従来のコイルばねを主体とする復帰機構に替わり、丈高の一層の低減を図り、狭隘な場所にも設置できるばね素材を得ることを目的とする。
本発明は併せて、当該ばねを使用して、新規な免震構造を得ることも他の目的とする。
本発明者らはこの問題の解決をなすべく鋭意研究の結果、正多角形の平面状をなすゴム素材すなわち平板ゴムばねがこの問題を解決する好適の手段であるとの知見に至ったものである。 The present invention has been made in view of the above circumstances, and aims to obtain a spring material that can be installed in a narrow place in place of a conventional return mechanism mainly composed of a coil spring, further reducing the height. To do.
Another object of the present invention is to obtain a new seismic isolation structure using the spring.
As a result of diligent research to solve this problem, the present inventors have come to the knowledge that a rubber material having a regular polygonal flat shape, that is, a flat rubber spring, is a suitable means for solving this problem. is there.

第１番目の発明は平板ゴムばね（以下、第１発明という）に係り、請求項１に記載のとおり、
所定のばね特性を有するゴム素材をもって成形され、
実質的に正多角形状をなすとともに密実の所定厚さを有する平板体に形成され、中心部に取付け孔を有し、角部に取付け孔を有してなることを特徴とする。
本第１発明は、図例には示されないが、図例（図１参照）の骨組み式の態様とは異なり、全面が実質的に密実とされる。換言すれば、隙間空間を有しないものであるが、多少の孔状の空間の形成は許容される。また、この平板体において、凹凸部の形成は全体の均等性の条件のもとに許容される。 The first invention relates to a flat rubber spring (hereinafter referred to as the first invention), and as described in claim 1,
Molded with a rubber material with predetermined spring characteristics,
It is formed in a flat plate having a substantially regular polygonal shape and having a dense predetermined thickness, and has a mounting hole at the center and mounting holes at the corners.
Although the first invention is not shown in the example of the drawing, the entire surface is substantially solid, unlike the framework-type aspect of the example of the figure (see FIG. 1). In other words, although there is no gap space, the formation of some hole-like spaces is allowed. Moreover, in this flat plate body, the formation of the concavo-convex portion is allowed under the condition of overall uniformity.

上記構成において、
1)正多角形状は６角形状であること、
2)全体の均等性の範囲内で、平板体に孔を有すること、凹凸部を有すること、
は適宜採択される選択的事項である。 In the above configuration,
1) The regular polygonal shape is a hexagonal shape,
2) Within the range of uniformity of the whole, having a hole in the flat plate, having an uneven part,
Is an optional matter that is adopted as appropriate.

第２番目の発明は他の平板ゴムばね（以下、第２発明という）に係り、請求項２に記載のとおり、
所定のばね特性を有するゴム素材をもって成形され、
実質的に平面形状が正多角形に形成され、
中心部の所定厚さを有する小平板部と；角部の所定厚さを有する小平板部と；前記中心部の小平板部から前記角部の小平板部に放射線状に延設される棒状の放射棒体部と；各角部を繋ぐとともに前記放射棒体部を繋ぐ棒状の辺部棒体部と；からなり、
前記中心部の小平板部及び前記各角部の小平板部には取付け孔を有してなることを特徴とする。
本第２発明はいわゆる骨組み式平板ゴム板ばねに係り、実施形態はその一態様であり、棒体部の構成を保持する範囲内で棒体部は種々の配設態様を採りうる。
すなわち、
1)辺部棒体部は各角部を繋ぐとともに前記放射棒体部を多段にかつ平行状に繋ぐ、
2)放射状棒体部及び外辺の辺部棒体部を有するとともに、内辺の棒体部はたすき状とされること、
はその一態様である。 The second invention relates to another flat rubber spring (hereinafter referred to as the second invention), and as described in claim 2,
Molded with a rubber material with predetermined spring characteristics,
The plane shape is substantially formed into a regular polygon,
A small flat plate portion having a predetermined thickness at the central portion; a small flat plate portion having a predetermined thickness at the corner portion; and a rod shape extending radially from the small flat plate portion at the central portion to the small flat plate portion at the corner portion. Radiating rod body parts; and rod-shaped side bar body parts that connect the corner parts and the radiating rod body parts;
The small flat plate portion at the center and the small flat plate portions at the respective corners have attachment holes.
The second aspect of the present invention relates to a so-called frame-type flat rubber leaf spring, and the embodiment is one aspect thereof, and the rod body portion can take various arrangement forms within a range in which the configuration of the rod body portion is maintained.
That is,
1) The side bar body part connects each corner part and connects the radiation bar body parts in a multi-stage and parallel manner.
2) It has a radial bar part and a side bar part on the outer side, and the bar part on the inner side is shaped like a plow,
Is one aspect thereof.

上記構成において、
1)正多角形状は６角形状であること、
2)放射棒体部において適宜間隔を保って球状体が形成されてなること、
は適宜採択される選択的事項である。 In the above configuration,
1) The regular polygonal shape is a hexagonal shape,
2) Spherical bodies are formed at appropriate intervals in the radiant rod body part,
Is an optional matter that is adopted as appropriate.

（作用）
第１発明及び第２発明において、本平板ゴムばねはその取付け孔を介して相対移動する２つの構造物間に介装設置される。
使用において、本平板ゴムばねの中心は一方の構造物に固定され、平板ゴムばねの各角部は他方の構造物に固定される。
構造物が相対移動すると、本平板ゴムばねは変形を受け、弾性エネルギーを蓄え、復元性を発揮する。
本平板ゴムばねの複数において、各辺を当接させてそれらの角部の取付け孔を介して連結し、大型の板状体として使用される。 (Function)
In the first and second inventions, the flat rubber spring is installed between two structures that move relative to each other through the mounting hole.
In use, the center of the flat rubber spring is fixed to one structure, and each corner of the flat rubber spring is fixed to the other structure.
When the structure is relatively moved, the flat rubber spring is deformed, stores elastic energy, and exhibits resilience.
In a plurality of the present flat rubber springs, the sides are brought into contact with each other and connected through attachment holes at their corners, and used as a large plate-like body.

第３番目の発明は本平板ゴムばねを使用してなる免震構造物（以下、第３発明という）に係り、請求項５に記載のとおり、
互いに間隔を存し、かつ互いに相対変位する２つの構造物間に可動支持体を介する可動構造系において、
所定のばね特性を有するゴム素材をもって実質的に正多角形状の平板体に形成され、中心部及び各角部に取付け孔を有してなる平板ゴムばねが使用され、
前記平板ゴムばねの中心部を一方の構造物に固定され、前記角部を他方の構造物に固定されてなる、ことを特徴とする。
本第３発明において、構造物の相対変位は水平移動に限定されるものではなく、鉛直あるいは斜め移動も含むものである。
上記構成において、
1)平板ゴムばねは平面状に設置されてなること、
2)平板ゴムばねは円錐状に設置されてなること、
は適宜採択される選択的事項である。 The third invention relates to a seismic isolation structure using the flat rubber spring (hereinafter referred to as third invention), and as described in claim 5,
In a movable structure system in which a movable support is interposed between two structures that are spaced apart from each other and relatively displaced from each other,
A flat rubber spring that is formed into a substantially polygonal flat plate with a rubber material having predetermined spring characteristics, and has mounting holes in the center and each corner, is used.
A center portion of the flat rubber spring is fixed to one structure, and the corner portion is fixed to the other structure.
In the third invention, the relative displacement of the structure is not limited to horizontal movement, but includes vertical or oblique movement.
In the above configuration,
1) The flat rubber spring must be flat
2) The flat rubber spring is installed in a conical shape,
Is an optional matter that is adopted as appropriate.

（作用）
構造物が相対移動すると、本平板ゴムばねは変形を受け、弾性エネルギーを蓄え、復元性を発揮する。
本平板ゴムばねの複数において、各辺を当接させてそれらの角部の取付け孔を介して連結し、大型の板状体として使用される。 (Function)
When the structure is relatively moved, the flat rubber spring is deformed, stores elastic energy, and exhibits resilience.
In a plurality of the present flat rubber springs, the sides are brought into contact with each other and connected through attachment holes at their corners, and used as a large plate-like body.

第４番目の発明は本平板ゴムばねを使用してなる免震構造物（以下、第４発明という）に係り、請求項６に記載のとおり、
互いに間隔を存し、かつ互いに相対変位する２つの構造物間に可動支持体を介する可動構造系において、
所定のばね特性を有するゴム素材をもって実質的に正多角形状の平板体に形成され、中心部及び各角部に取付け孔を有してなる平板ゴムばねが使用され、
前記平板ゴムばねの中心部を一方の構造物に連動する可動支持体に固定され、前記角部を他方の構造物に固定されてなる、ことを特徴とする。
本第４発明においても、構造物の相対変位は水平移動に限定されるものではなく、鉛直あるいは斜め移動も含むものである。
上記構成において、
1)平板ゴムばねは平面状に設置されてなること、
2)平板ゴムばねは円錐状に設置されてなること、
は適宜採択される選択的事項である。 The fourth invention relates to a seismic isolation structure using the flat rubber spring (hereinafter referred to as the fourth invention), and as described in claim 6,
In a movable structure system in which a movable support is interposed between two structures that are spaced apart from each other and relatively displaced from each other,
A flat rubber spring that is formed into a substantially polygonal flat plate with a rubber material having predetermined spring characteristics, and has mounting holes in the center and each corner, is used.
A center portion of the flat rubber spring is fixed to a movable support that is interlocked with one structure, and the corner portion is fixed to the other structure.
Also in the fourth invention, the relative displacement of the structure is not limited to horizontal movement, but includes vertical or oblique movement.
In the above configuration,
1) The flat rubber spring must be flat
2) The flat rubber spring is installed in a conical shape,
Is an optional matter that is adopted as appropriate.

（作用）
構造物が相対移動すると、本平板ゴムばねは変形を受け、弾性エネルギーを蓄え、復元性を発揮する。
本平板ゴムばねの複数において、各辺を当接させてそれらの角部の取付け孔を介して連結し、大型の板状体として使用される。
本免震構造物は単一であっても所期の作用を発揮する。 (Function)
When the structure is relatively moved, the flat rubber spring is deformed, stores elastic energy, and exhibits resilience.
In a plurality of the present flat rubber springs, the sides are brought into contact with each other and connected through attachment holes at their corners, and used as a large plate-like body.
Even if this seismic isolation structure is a single structure, the desired effect is exhibited.

第４発明において、可動支持体を、鍋状凹部を有する鋼製の鍋状金具と；該鍋状金具の鍋状凹部内に密実に敷設される多数の小球状の転動子と；該転動子上に載置される可動台；より構成し、かつ、可動台に平板ゴムばねの中心を固定してなることは第５発明を構成する。 In the fourth invention, the movable support is made of a steel pan-shaped metal fitting having a pan-shaped recess; a large number of small spherical rolling elements densely laid in the pan-shaped recess of the pot-shaped metal fitting; A movable base placed on the moving element; and the center of the flat rubber spring fixed to the movable base constitutes the fifth invention.

本発明の平板ゴムばねによれば、平板状をなし、丈高をとらず、狭隘な場所に設置できる。
本平板ゴムばねは平面配置のみならず、円錐状の配設も可能であり、これにより鉛直拘束力を得ることができ、設計の自由度が増大する。
更に、該平板ゴムばねの複数板を連接し、大きな広がりのゴムばねを確保し、ひいては大きな弾性復元力を得ることができる。
また、本発明の免震構造物によれば、該構造物に使用される平板ゴムばねは丈高を採らず、可動支持体の丈高のみに規定され、より一層の丈高の低減をなすことができる。 According to the flat rubber spring of the present invention, it is flat and can be installed in a narrow place without taking height.
The flat rubber spring can be arranged not only in a plane but also in a conical shape, whereby a vertical restraining force can be obtained, and the degree of freedom in design increases.
Further, a plurality of plates of the flat rubber spring can be connected to ensure a large spread rubber spring, and thus a large elastic restoring force can be obtained.
Further, according to the seismic isolation structure of the present invention, the flat rubber spring used in the structure does not take a height but is defined only by the height of the movable support, further reducing the height. be able to.

本発明の平板ゴムばねの実施の形態を図面に基づいて説明する。
図１〜図５は本平板ゴムばねの一実施形態としての骨組み式平板ゴムばねを示す。すなわち、図１及び図２は本平板ゴムばねの全体構成を示し、図３〜図５は各部の構成を示す。 An embodiment of a flat rubber spring of the present invention will be described with reference to the drawings.
1 to 5 show a skeleton type flat rubber spring as an embodiment of the flat rubber spring. That is, FIG.1 and FIG.2 shows the whole structure of this flat rubber spring, and FIGS. 3-5 shows the structure of each part.

図１及び図２に示すように、本実施形態の平板ゴムばねＳは、ゴム製の棒状部材の連なりをもって骨組み状に形成され、全体的に薄板状の正６角形状の平面的形状をなす。
もっと言うと、該平板ゴムばねＳは、中心部の小円板状の中心核部１、正６角形の各角部に形成された小円板状の角部２、該中心核部１から各角部２に放射状に延設される棒状の放射棒体部３、正６角形状の辺部において隣合う放射棒部３を平行状に繋ぐ外方及び内方の辺部棒体部４（外方部４ａ、内方部４ｂ，４ｃ，４ｄ）、からなる。
本平板ゴムばねＳは広がりに対し、一定の薄い板厚に形成される。 As shown in FIGS. 1 and 2, the flat rubber spring S of the present embodiment is formed in a frame shape with a series of rubber rod-like members, and forms a flat plate shape of a regular hexagonal shape as a whole. .
More specifically, the flat rubber spring S includes a small disc-shaped central core portion 1 at the center, a small disc-shaped corner portion 2 formed at each corner of the regular hexagon, and the central core portion 1. A rod-shaped radiating rod body portion 3 extending radially at each corner portion 2, and outer and inner side rod body portions 4 that connect the adjacent radiating rod portions 3 in parallel to each other in a regular hexagonal side portion. (Outer part 4a, inner part 4b, 4c, 4d).
The flat rubber spring S is formed to have a constant thin plate thickness with respect to spreading.

本平板ゴムばねＳに使用されるゴム素材は、天然ゴム、合成ゴムを含め、所定の弾性特性を発揮するものが選ばれる。 As the rubber material used for the flat rubber spring S, materials exhibiting predetermined elastic characteristics including natural rubber and synthetic rubber are selected.

以下、本平板ゴムばねＳの各部の詳細構造を説明する。
中心核部１
中心核部１は平板ゴムばねＳの中心部を占め、小円板状をなす。該中心核部１は棒体部の厚さよりも大きくされ、外周部の傾斜面１０をもって厚さが漸減され、棒体部に連接する。該中心核部１の中央には表裏に貫通する円形の取付け孔１ａが開設される。該取付け孔１ａには、金属補強筒１１が装着されるが、適宜省略される。
なお、該中心核部１の厚さは棒体部の厚さと等厚であってもよい。 Hereinafter, the detailed structure of each part of the flat rubber spring S will be described.
Central core 1
The central core portion 1 occupies the central portion of the flat rubber spring S and has a small disk shape. The central core portion 1 is made larger than the thickness of the rod body portion, and the thickness is gradually reduced by the inclined surface 10 of the outer peripheral portion, and is connected to the rod body portion. In the center of the central core portion 1, a circular mounting hole 1a penetrating the front and back is opened. A metal reinforcing cylinder 11 is mounted in the mounting hole 1a, but is omitted as appropriate.
The thickness of the central core 1 may be equal to the thickness of the rod body.

角部２
角部２は小円板状をなし、該角部２の厚さは棒体部の厚さよりも大きくされ、中心に取付け孔２ａとしての円孔を有する。該円孔２ａの中心は、本実施形態では正６角形の角部（頂点）に合致する態様を採るが、偏心位置を採ることを防げるものでない。すなわち、頂点に合致する態様においては、後記するように、複数枚の本平板ゴムばねＳの組み合わせにおいて連接かつ円滑になされる。
角部２は本実施形態では段部１３をもって棒体部に連なるが、傾斜面を介して棒体退部に連なる態様を採ることができる。更には、等厚であってもよい。取付け孔２ａには金属補強筒１４が装着されるが、適宜省略されうる。
本実施形態に特徴的なことは、当該角部２は正６角形の角部より突出することであり、かつ、取付け孔２ａの中心が正６角形の頂部に合致することである。 Corner 2
The corner portion 2 has a small disk shape, and the thickness of the corner portion 2 is larger than the thickness of the rod body portion, and has a circular hole as a mounting hole 2a at the center. In the present embodiment, the center of the circular hole 2a takes a form that matches the corner (vertex) of a regular hexagon, but it does not prevent taking an eccentric position. That is, in a mode that matches the apex, as will be described later, a combination of a plurality of flat rubber springs S is connected and smoothly performed.
In this embodiment, the corner portion 2 is connected to the rod body portion with the stepped portion 13, but it is possible to adopt a mode in which the corner portion 2 is continued to the rod body retracting portion via the inclined surface. Furthermore, it may be of equal thickness. The metal reinforcing cylinder 14 is attached to the mounting hole 2a, but may be omitted as appropriate.
What is characteristic of this embodiment is that the corner portion 2 protrudes from a regular hexagonal corner portion, and that the center of the mounting hole 2a matches the top of the regular hexagon.

放射棒体部３
放射棒体部３は、断面が四角形をなし、中心核部１から各角部２に直線状に延設される。本実施形態では断面は四角形をなすが、他の角形（例えば６角形）、あるいは円形、楕円形であってもよい。すなわち、図５(a) は本実施形態における矩形断面のものを示し、図５(b) は他の態様としての円形断面のものを示す。
更に、本実施形態では該放射棒体部３は中心核部１から各角部２に６本の直線状に延設されるが、図１に２点鎖線で示すように、これらの６本の放射棒体部３の間に他の放射棒体部３Ａを配する態様も採りうる。該放射棒体部３Ａは各辺に配することを原則とするが、辺部の一つ置きに間隔を存して配することもできる。該態様は本平板ゴムばねＳの形状を更に大きくする場合、あるいは相対的に薄くなる場合において有効である。 Radiant rod part 3
The radiating rod body 3 has a quadrangular cross section, and extends linearly from the central core 1 to each corner 2. In the present embodiment, the cross section is a quadrangle, but may be another square (for example, a hexagon), a circle, or an ellipse. That is, FIG. 5 (a) shows a rectangular cross section in the present embodiment, and FIG. 5 (b) shows a circular cross section as another aspect.
Further, in the present embodiment, the radiating rod body portion 3 is extended in a straight line from the central core portion 1 to each corner portion 2, but as shown by a two-dot chain line in FIG. A mode in which another radiating rod body portion 3A is arranged between the radiating rod body portions 3 can also be adopted. In principle, the radiating rod part 3A is arranged on each side, but it can be arranged at intervals in every other side. This aspect is effective when the shape of the flat rubber spring S is further increased or is relatively thin.

辺部棒体部４
辺部棒体部４は、正６角形状の辺部を構成し、隣合う放射棒体部３を平行状に繋ぐ。４ａは本平板ゴムばねＳの角部２の相互を繋ぐ外辺棒体部であり、４ｂ，４ｃ，４ｄは放射棒体部３を繋ぐ内辺棒体部である。上記において、外辺棒体部４ａは必須であるが、内辺棒体部４ｂ，４ｃ，４ｄは本態様に限らず、更に他の態様、例えばたすき状、あるいはＸ状の配設も採られる。また、辺部棒体部４の相互の間隔は、本実施形態では等間隔を採るが、均等性を保持して不等間隔であってもよい。また、本実施形態では断面は四角形をなすが、形状に限定されない。 Side bar part 4
The side bar body part 4 constitutes a regular hexagonal side part, and connects the adjacent radiation bar body parts 3 in parallel. Reference numeral 4 a denotes an outer side rod body portion that connects the corner portions 2 of the flat rubber spring S, and 4 b, 4 c, and 4 d denote inner side rod body portions that connect the radiating rod body portion 3. In the above, the outer side rod body part 4a is indispensable, but the inner side bar body parts 4b, 4c, 4d are not limited to this mode, and other modes, for example, a bask-like shape or an X-shaped arrangement may be adopted. . Moreover, although the space | interval of the side part rod part 4 takes an equal space | interval in this embodiment, it may maintain an equality and may be an unequal space | interval. In the present embodiment, the cross section is a quadrangle, but the shape is not limited.

上記構成において、中心核部１、角部２、棒体部３，４の厚さは本質的事項ではなく、各構成要素１，２，３，４は等厚であってもよい。 In the above configuration, the thicknesses of the central core portion 1, the corner portion 2, and the rod body portions 3 and 4 are not essential matters, and the respective constituent elements 1, 2, 3 and 4 may be of equal thickness.

本平板ゴムばねＳはこのような構成であるから、中心核部１を固定した場合、角部２からの引張力に対し、面方向に均等の弾性特性を発揮する。また、角部２を固定した場合、中心核部１の引張力に対し、面直角方向に均等の弾性特性を発揮する。
また、その使用勝手は以下に述べるように良好なものである。 Since the flat rubber spring S has such a configuration, when the central core portion 1 is fixed, it exhibits an elastic characteristic that is uniform in the surface direction against the tensile force from the corner portion 2. In addition, when the corner portion 2 is fixed, the elastic properties that are uniform in the direction perpendicular to the surface with respect to the tensile force of the central core portion 1 are exhibited.
Moreover, the usability is good as described below.

本平板ゴムばねＳは平面態様をもって使用されることを基本とする。
また、中心核部１より各角部２に向けて折り曲げて、すなわち円錐状にして使用される態様を採る。
更にはこれらの態様を混在させることも可能である。 The flat rubber spring S is basically used in a planar manner.
Moreover, the aspect which is bent toward the corners 2 from the central core 1, that is, in a conical shape, is employed.
Further, these modes can be mixed.

（本平板ゴムばねＳの適用例）（図６〜図１１参照）
図６〜図１１は本平板ゴムばねＳの建物内における免震床への適用例を示す。
本免震床Ｈは、図６・図７に示すように、構造躯体の床部２０に免震支持装置（可動支持装置）２１を介して可動床板２２が載置され、かつ、床部２０と可動床板２２とにわたって本平板ゴムばねＳが介装設置されてなる。免震支持装置２１すなわち可動支持装置は変位に追従して荷重を支持するが、復帰機能はない。２３は固定床板であり、可動床板２２と振動的に絶縁されている。 (Application example of the present flat rubber spring S) (see FIGS. 6 to 11)
6 to 11 show examples of application of the flat rubber spring S to a seismic isolation floor in a building.
As shown in FIGS. 6 and 7, the seismic isolation floor H has a movable floor plate 22 mounted on a floor 20 of a structural frame via a seismic isolation support device (movable support device) 21, and the floor portion 20. The flat rubber spring S is interposed between the movable floor plate 22 and the movable floor plate 22. The seismic isolation support device 21, that is, the movable support device supports the load following the displacement, but does not have a return function. Reference numeral 23 denotes a fixed floor plate, which is vibrationally insulated from the movable floor plate 22.

更に詳しくは、免震支持装置２１は、支持機能とともに、少なくとも横振動の吸収のみを許容すれば足り、更に、縦振動を吸収する機能が付加されることは好ましいが、格別期待されない。 More specifically, it is sufficient that the seismic isolation support device 21 allows at least only the absorption of lateral vibration along with the support function, and it is preferable that a function of absorbing longitudinal vibration is added, but it is not particularly expected.

図８及び図９に免震支持装置２１の一態様を示す。
この免震支持装置２１Ａは、床部２０に固定設置され上方に向けて鍋状凹部２５Ａを有する鋼製の鍋状金具２５と、該鍋状金具２５の鍋状凹部２５Ａ内に密実に敷設される多数の小球状の転動子２６と、更には、転動子２６上に載置され可動床板２２に固定される可動台２７を含む。上記した多数の転動子２６は鍋状金具２５内に一層に敷き並べられ「転がり層」を形成する。
以下、更に本免震支持装置２１Ａのこれらの構成要素に付き詳述する。
鍋状金具２５の鍋状凹部２５Ａは、平底部２５ａと周縁部２５ｂとから浅底の円筒鍋状をなし、周縁部２５ｂを残してその余の平底部２５ａは平坦な円板面をなす。平底部２５ａの径Φ１は、上方の可動台２７の下面２７ａの径Φ２よりも十分に大きくされ、可動台２７の全方向への移動を確保する。該鍋状金具２５の周縁部２５ｂは、本実施形態では一定半径の曲面に形成されるが、その余の形状（例えば、傾斜面）を除外するものではない。
該鍋状金具２５は上縁２５Ｂは可動台２７のストッパーとなる。
該鍋状金具２５は四隅にボルト挿通孔が形成され、床部２０に埋め込まれたアンカーボルト２９が挿通され、床部２０との固定がなされる。
転動子２６は、剛性（鋼製）の小球体よりなり、いわゆるボールベアリングが使用され、鍋状金具２５の鍋状凹部２５Ａの底面に密実に層状に敷き並べられ、転がり層を形成する。該転がり層は少なくとも鍋状金具２５の平底部２５ａの全体に及び、更には本実施形態では鍋状金具２５の周縁部２５ｂにも及んでいる。しかして、該転動子２６は極めて小さな動摩擦係数（具体値としては０．０１５）を示す。
可動台２７はその下面２７ａを転動子２６上に載置され、転がり層上を低摩擦で移動する。該可動台２７の下縁部２７ｂは丸みを持ち、転動子２６上の移動の際にはひっかかりとはならない。
該可動台２７はその上縁のフランジ２７ｃを介して可動床板２２に固定される。
鍋状金物２５の平底部２５ａの径Φ１と可動台２７の下面２７ａの径Φ２との差（Φ１−Φ２）だけ可動台２７は水平に自由に動くことになるが、それ以上の移動は可動台２７の本体の側面が鍋状金具２５のストッパー面２５Ｂに当接して阻止される。
可動床板２２はこの免震支持装置２１Ａを介して支持され、該可動床板２２には嫌振動性の機器、例えば精密加工機器、等が設置される。 8 and 9 show one mode of the seismic isolation support device 21. FIG.
This seismic isolation support device 21A is fixedly installed in the floor portion 20 and is laid in a solid manner in a steel pan-shaped bracket 25 having a pan-shaped recess 25A facing upward, and a pan-shaped recess 25A of the pan-shaped bracket 25. A plurality of small spherical rolling elements 26, and a movable table 27 mounted on the rolling elements 26 and fixed to the movable floor plate 22. A large number of the above-described rolling elements 26 are laid out in a single layer in the pot-shaped metal fitting 25 to form a “rolling layer”.
Hereinafter, these components of the seismic isolation support device 21A will be described in detail.
The pot-shaped recess 25A of the pot-shaped metal fitting 25 forms a shallow cylindrical pot shape from the flat bottom portion 25a and the peripheral edge portion 25b, and the remaining flat bottom portion 25a forms a flat disk surface, leaving the peripheral edge portion 25b. The diameter Φ1 of the flat bottom portion 25a is sufficiently larger than the diameter Φ2 of the lower surface 27a of the upper movable table 27, and ensures movement of the movable table 27 in all directions. The peripheral edge 25b of the pan-shaped metal fitting 25 is formed in a curved surface having a constant radius in this embodiment, but does not exclude the remaining shape (for example, an inclined surface).
The upper edge 25 B of the pot-shaped metal fitting 25 serves as a stopper for the movable base 27.
The pot-shaped metal fitting 25 is formed with bolt insertion holes at four corners, and anchor bolts 29 embedded in the floor portion 20 are inserted to be fixed to the floor portion 20.
The rolling elements 26 are made of rigid (steel) small spheres, and so-called ball bearings are used. The rolling elements 26 are densely arranged in layers on the bottom surface of the pot-shaped recess 25A of the pot-shaped metal fitting 25 to form a rolling layer. The rolling layer extends to at least the entire flat bottom portion 25a of the pot-shaped metal fitting 25, and further extends to the peripheral edge portion 25b of the pot-shaped metal fitting 25 in this embodiment. Thus, the rolling element 26 exhibits a very small dynamic friction coefficient (specific value is 0.015).
The movable table 27 has its lower surface 27a placed on the rolling element 26, and moves on the rolling layer with low friction. The lower edge portion 27b of the movable base 27 is rounded and does not get caught when moving on the rolling element 26.
The movable table 27 is fixed to the movable floor plate 22 through a flange 27c at the upper edge.
Although the movable base 27 moves freely horizontally by the difference (Φ1-Φ2) between the diameter Φ1 of the flat bottom 25a of the pot-shaped hardware 25 and the diameter Φ2 of the lower surface 27a of the movable base 27, further movement is movable. The side surface of the main body of the base 27 abuts against the stopper surface 25 B of the pan-shaped bracket 25 and is prevented.
The movable floor plate 22 is supported via the seismic isolation support device 21A. The movable floor plate 22 is provided with a vibration-free device such as a precision processing device.

図６、図７及び図１０に示すように、本平板ゴムばねＳはその中心核部１を床部２０に埋め込まれたアンカーボルト３０及びナット３１を介して固定される。すなわち、中心核部１の取付け孔１ａにアンカーボルト３０の頭部を挿通し、上下よりナット３１を螺合締付けて固定する。また、各角部２は可動床板２２より垂設された取付けボルト３３を介して固定される。すなわち、取付けボルト３３は固定ナット３４をもって可動床板２２に固定され、その下端部を角部２の取付け孔２ａに挿通し、上下よりナット３５を螺合締付けて固定する。
本平板ゴムばねＳは免震床Ｈ部分に対象を保って均等に配されることが好ましい。本実施形態では、可動床板２２に対して対称に２か所配される。３か所以上の配設も可能である。
図１０に示すように、本平板ゴムばねＳは水平を保持して配設される。この場合に留意すべきは、水平方向への応力が０となること、換言すれば偶力が発生しないようにすることが重要である。すなわち、本平板ゴムばねＳを自然状態すなわち非応力状態で配する場合は格別の配慮は不要であるが、一定の予応力を加える場合には中心核部１を対称として合力が０（ゼロ）となるように配慮する。 As shown in FIGS. 6, 7, and 10, the flat rubber spring S is fixed through anchor bolts 30 and nuts 31 having the central core portion 1 embedded in the floor portion 20. That is, the head of the anchor bolt 30 is inserted into the mounting hole 1a of the central core portion 1, and the nut 31 is fixed by screwing from above and below. Each corner 2 is fixed via a mounting bolt 33 suspended from the movable floor plate 22. That is, the mounting bolt 33 is fixed to the movable floor plate 22 by the fixing nut 34, and the lower end portion thereof is inserted into the mounting hole 2a of the corner portion 2, and the nut 35 is screwed and fixed from above and below.
It is preferable that the flat rubber springs S are evenly arranged on the seismic isolation floor H while keeping the object. In this embodiment, two places are arranged symmetrically with respect to the movable floor plate 22. Three or more locations are also possible.
As shown in FIG. 10, the flat rubber spring S is disposed so as to be horizontal. It should be noted in this case that it is important that the stress in the horizontal direction is zero, in other words, no couple is generated. That is, when the flat rubber spring S is arranged in a natural state, that is, in an unstressed state, no special consideration is required. However, when a certain prestress is applied, the central core 1 is symmetrical and the resultant force is 0 (zero). Make sure that

図１１は本平板ゴムばねＳを中心核部１を頂点として円錐状に配設する態様を示す。この場合、円錐状の平板ゴムばねＳは上下方向に応力を打ち消し合い釣合った状態になる。すなわち、この状態においては平板ゴムばねＳは予応力が生じるが、対称を保って配すれば可動床板２２に対して水平拘束作用と鉛直拘束作用とを同時に達成することができる。 FIG. 11 shows a mode in which the flat rubber spring S is arranged in a conical shape with the central core portion 1 as a vertex. In this case, the conical flat rubber spring S cancels out stress in the vertical direction and is in a balanced state. That is, in this state, the flat rubber spring S is prestressed, but if it is arranged with symmetry, a horizontal restraining action and a vertical restraining action can be achieved simultaneously with respect to the movable floor plate 22.

本平板ゴムばねＳの配置の態様は、図１０、図１１に示す配置態様に限定されない。図１０の逆の態様、すなわち、中心核部１を可動床板２２に固定し、角部２を床部２０に固定する態様を採りうる。また、図１１の逆の態様、すなわち、中心核部１を可動床板２２に固定し、角部２を床部２０に固定する態様を採りうる。 The arrangement of the flat rubber spring S is not limited to the arrangement shown in FIGS. A mode opposite to that of FIG. 10, that is, a mode in which the central core portion 1 is fixed to the movable floor plate 22 and the corner portion 2 is fixed to the floor portion 20 can be adopted. Moreover, the reverse aspect of FIG. 11, ie, the aspect which fixes the central core part 1 to the movable floor board 22, and fixes the corner | angular part 2 to the floor part 20, can be taken.

このように構成された免震床Ｈは、建物躯体に地震動が作用すると、床部２０に振動が伝播するが、該床部２０は可動床板２２とは免震支持装置２１を介して振動的に絶縁されたものとなっているので、床部２０と可動床板２２との間で相対変位が生じる。
この相対変位により本平板ゴムばねＳは変形するが、本平板ゴムばねＳはこの変位に全方向をもって良好に追従し、かつ、その変位量に応じて弾力応力を蓄え、戻し力となる。
これにより、可動床板２２は速やかに元に位置に復帰する。 The seismic isolation floor H configured in this way propagates vibration to the floor 20 when seismic motion acts on the building frame. The floor 20 is vibrated with the movable floor plate 22 via the seismic isolation support device 21. Therefore, relative displacement occurs between the floor portion 20 and the movable floor plate 22.
The flat rubber spring S is deformed by this relative displacement, but the flat rubber spring S follows the displacement well in all directions and stores elastic stress according to the amount of the displacement to become a return force.
As a result, the movable floor plate 22 quickly returns to the original position.

（本免震床Ｈの効果）
本免震床Ｈによれば、復帰装置としての平板ゴムばねＳは薄板状をなすので、丈高を採らず、可動支持体の丈高のみに規定され、より一層の丈高の低減をなすことができ、狭隘な場所に設置することができる。 (Effect of this seismic isolation floor H)
According to the seismic isolation floor H, the flat rubber spring S as the return device has a thin plate shape, so that the height is not taken and only the height of the movable support is defined, and the height is further reduced. It can be installed in a narrow place.

（本平板ゴムばねＳの他の態様）
以上の説明では本平板ゴムばねＳを単独で使用する態様を示したが、図１２・図１３に本平板ゴムばねＳの複数を組み合わせ使用する態様を示す。
すなわち、本平板ゴムばねＳの相互をそれらの相対接する外辺棒体部４ａを上下に重ね、対応する角部２の円孔２ａに上下に貫通して接合ボルト・ナット３６を嵌挿し、図１２のように多数板の平板ゴムばねＳ（Ｓ１，Ｓ２，Ｓ３，Ｓ４，Ｓ５，Ｓ６, Ｓ７) により大きな平板ゴムばねＴを得る。
この大版の平板ゴムばねＴにおいて、平板ゴムばねＳ２の中心核部１を一方の構造物に固定し、該平板ゴムばねＳ２の周囲に配される各平板ゴムばねＳ１，Ｓ３，Ｓ４，Ｓ５，Ｓ６, Ｓ７の外方の各角部２（２ｏ）を他方の構造物に固定する配置態様を採る。更に、各平板ゴムばねＳ１，Ｓ２，Ｓ３，Ｓ４，Ｓ５，Ｓ６, Ｓ７の各中心核部１を一方の構造物に固定し、各平板ゴムばねＳ１，Ｓ２，Ｓ３，Ｓ４，Ｓ５，Ｓ６，Ｓ７の角部２（２ｉ，２ｏ）を他方の構造物に固定する配置態様も採りうる。 (Other aspects of the flat rubber spring S)
In the above description, a mode in which the flat rubber spring S is used alone is shown. However, FIGS. 12 and 13 show a mode in which a plurality of the flat rubber springs S are used in combination.
That is, the peripheral rubber body portions 4a that are opposed to each other of the flat rubber springs S are vertically stacked, and the joint bolts / nuts 36 are inserted through the circular holes 2a of the corresponding corner portions 2 vertically. As shown in FIG. 12, a large flat rubber spring T is obtained by the flat rubber springs S (S1, S2, S3, S4, S5, S6, S7).
In this large-sized flat rubber spring T, the central core 1 of the flat rubber spring S2 is fixed to one structure, and the flat rubber springs S1, S3, S4, S5 arranged around the flat rubber spring S2. , S6, S7, the outer corner 2 (2o) is fixed to the other structure. Furthermore, each central core 1 of each flat rubber spring S1, S2, S3, S4, S5, S6, S7 is fixed to one structure, and each flat rubber spring S1, S2, S3, S4, S5, S6. An arrangement mode in which the corner 2 (2i, 2o) of S7 is fixed to the other structure can also be adopted.

（免震支持機構Ｊ）
図６〜図１１で示した免震床構造では、免震支持装置２１と本平板ゴムばねＳとは別配置であったが、これらを一体とした態様を図１４〜図１６に示す。
この免震支持機構Ｊは、免震支持装置２１Ｂと平板ゴムばねＳとの組合せよりなる。該免震支持機構Ｊは建物の床部２０と可動床板２２との間に固定設置される。
免震支持装置２１Ｂの構成は先の免震支持装置２１Ａに準じ、鍋状金具４０、転動子４１及び可動台４２よりなる。鍋状金具４０、転動子４１は先の免震支持装置２１Ａと同一の構成を採る。４０Ａは鍋状金具４０の鍋状凹部、４０Ｂは鍋状金具４０の上縁のストッパーである。該鍋状金具４０はアンカーボルトを介して床部２０に固定される。転動子４１は多数の小球体よりなる。
可動台４２の本体部は上部本体部４２Ａと下部本体部４２Ｂとに分かれ、上部本体部４２Ａ、下部本体部４２Ｂはともに相対向してフランジ４４を有し、これらのフランジ４４間をボルト・ナットよりなる締具４５をもって一体に固定される。上部本体部４２Ａの下端面は下部本体部４２Ｂの上面に当接され、上部本体部４２Ａの下部は縮径部４６となり、平板ゴムばねＳが嵌合装着される。縮径部４６の下端面中央にはダボ４７が突設され、下部本体部４２Ｂには上面にダボ４７を受入れるダボ穴４８が凹設される。
可動台４２は上部本体部４２Ａの上部フランジ４９のボルト挿通孔４９ａに挿通される取付けボルトを介して可動床部２２に固定される。 (Seismic isolation support mechanism J)
In the seismic isolation floor structure shown in FIGS. 6 to 11, the seismic isolation support device 21 and the flat rubber spring S are separately arranged. FIGS. 14 to 16 show an embodiment in which these are integrated.
This seismic isolation support mechanism J comprises a combination of a seismic isolation support device 21B and a flat rubber spring S. The seismic isolation support mechanism J is fixedly installed between the floor 20 of the building and the movable floor plate 22.
The structure of the seismic isolation support device 21B is composed of a pan-shaped fitting 40, a rolling element 41, and a movable base 42 in accordance with the previous seismic isolation support device 21A. The pot-shaped metal fitting 40 and the rolling element 41 have the same configuration as the previous seismic isolation support device 21A. Reference numeral 40A denotes a pot-shaped recess of the pot-shaped metal fitting 40, and 40B denotes a stopper at the upper edge of the pot-shaped metal fitting 40. The pan-like metal fitting 40 is fixed to the floor portion 20 via anchor bolts. The rolling element 41 is composed of a large number of small spheres.
The main body portion of the movable base 42 is divided into an upper main body portion 42A and a lower main body portion 42B. Both the upper main body portion 42A and the lower main body portion 42B have flanges 44 facing each other. The fasteners 45 are fixed together. The lower end surface of the upper main body portion 42A is in contact with the upper surface of the lower main body portion 42B, the lower portion of the upper main body portion 42A is a reduced diameter portion 46, and the flat rubber spring S is fitted and mounted. A dowel 47 protrudes from the center of the lower end surface of the reduced diameter portion 46, and a dowel hole 48 for receiving the dowel 47 is recessed in the upper surface of the lower main body portion 42B.
The movable base 42 is fixed to the movable floor portion 22 via mounting bolts that are inserted into the bolt insertion holes 49a of the upper flange 49 of the upper main body portion 42A.

平板ゴムばねＳはこの免震支持装置２１Ｂにその中心を固定される。このため、平板ゴムばねＳには中央に取付け孔及び該取付け孔周りに締具用孔が形成される。すなわち、該平板ゴムばねＳの中央には大径の取付け孔１ｂが形成され、この取付け孔１ｂに上部本体部４２Ａの縮径部４６を嵌挿入し、上下のフランジ４４により該平板ゴムばねＳを挟み付け、フランジ４４を締具４５をもって締付け固定される。角部２は可動床板２２より垂設された取付けボルト３３を介して固定される。この構成は既述のとおりであって、説明を省略する。 The center of the flat rubber spring S is fixed to the seismic isolation support device 21B. For this reason, the flat rubber spring S is formed with an attachment hole in the center and a fastener hole around the attachment hole. That is, a large-diameter mounting hole 1 b is formed in the center of the flat rubber spring S, and the reduced diameter portion 46 of the upper main body portion 42 A is fitted and inserted into the mounting hole 1 b, and the flat rubber spring S is formed by the upper and lower flanges 44. And the flange 44 is fastened and fixed with a fastener 45. The corner 2 is fixed via a mounting bolt 33 that is suspended from the movable floor plate 22. This configuration is as described above, and a description thereof is omitted.

（作用）
この免震支持機構Ｊは次のように作用する。
建物躯体に地震動が作用すると、床部２０に振動が伝播するが、該床部２０は可動床板２２とは本免震支持機構Ｊの免震支持装置２１Ｂを介して振動的に絶縁されたものとなっているので、床部２０と可動床板２２との間で相対変位が生じる。
この相対変位により本免震支持機構Ｊの平板ゴムばねＳは変形するが、本免震支持機構Ｊの平板ゴムばねＳはこの変位に全方向をもって良好に追従し、かつ、その変位量に応じて弾力応力を蓄え、戻し力となる。
これにより、可動床板２２は速やかに元に位置に復帰する。 (Function)
This seismic isolation support mechanism J operates as follows.
When seismic motion acts on the building frame, the vibration propagates to the floor 20, and the floor 20 is vibrationally insulated from the movable floor plate 22 through the seismic isolation support device 21 B of the seismic isolation support mechanism J. Therefore, relative displacement occurs between the floor portion 20 and the movable floor plate 22.
The flat rubber spring S of the seismic isolation support mechanism J is deformed by this relative displacement, but the flat rubber spring S of the seismic isolation support mechanism J follows this displacement well in all directions and according to the amount of displacement. It stores elastic stress and becomes a return force.
As a result, the movable floor plate 22 quickly returns to the original position.

（効果）
本免震支持機構Ｊによれば、小型の免震支持装置２１Ｂに平板ゴムばねＳが組み込まれ、支持作用と復帰作用とが一体化した小型のものが得られ、丈高の低い狭隘な場所に設置できる。
平板ゴムばねＳの複数枚を上記の要領で更に接続すれば大きな復帰力を発揮できる。 (effect)
According to this seismic isolation support mechanism J, a flat rubber spring S is incorporated into a small seismic isolation support device 21B, and a compact one in which the support action and the return action are integrated is obtained. Can be installed.
If a plurality of flat rubber springs S are further connected as described above, a large restoring force can be exhibited.

本発明は上記実施の形態に限定されるものではなく、本発明の基本的技術思想の範囲内で種々設計変更が可能である。
1)本実施要領では平板ゴムばねＳは主として等厚のものを述べたが、
角部２並びに放射棒体部３での間隔部を球状とする態様を採ることができる。
2)本実施形態では角部２の取付け孔２ａの中心は正６角形の頂部に合致するものであるが、多少の偏心は許容される。 The present invention is not limited to the embodiment described above, and various design changes can be made within the scope of the basic technical idea of the present invention.
1) Although the flat rubber spring S is mainly described as having the same thickness in this implementation procedure,
The aspect which makes the space | interval part in the corner | angular part 2 and the radiation | emission rod body part 3 spherical can be taken.
2) In the present embodiment, the center of the mounting hole 2a of the corner 2 matches the top of the regular hexagon, but some eccentricity is allowed.

本発明の平板ゴムばねの一実施形態の全体構成を示す平面図。The top view which shows the whole structure of one Embodiment of the flat rubber spring of this invention. 図１の２−２線断面図。FIG. 2 is a sectional view taken along line 2-2 in FIG. 1. 本平板ゴムばねの部分拡大平面図。The partial enlarged plan view of this flat rubber spring. 図３の４−４線断面図。FIG. 4 is a sectional view taken along line 4-4 of FIG. 棒体部の断面図。Sectional drawing of a rod part. 本平板ゴムばねの免震床への適用を示す平面図。The top view which shows the application to the seismic isolation floor of this flat rubber spring. 図６の７−７線断面図。FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 免震支持装置の一態様を示す構成図。The block diagram which shows the one aspect | mode of a seismic isolation support apparatus. 図８の９−９線断面図。FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. 8. 本平板ゴムばねの取付け詳細図。Detailed view of installation of the flat rubber spring. 本平板ゴムばねの他の取付け態様を示す図。The figure which shows the other attachment aspect of this flat rubber spring. 平板ゴムばねの組合せ態様図。The combination aspect figure of a flat rubber spring. 接手部の拡大断面図。The expanded sectional view of a joint part. 免震支持機構の構成を示す断面図。Sectional drawing which shows the structure of a seismic isolation support mechanism. 図１４の１５−１５線断面図。FIG. 15 is a sectional view taken along line 15-15 in FIG. 14; 免震支持機構の要部の断面図。Sectional drawing of the principal part of a seismic isolation support mechanism.

Explanation of symbols

Ｓ…平板ゴムばね、Ｈ…免震床、Ｊ…免震支持機構、１…中心核部、２…角部、３…放射棒体部、４…辺部棒体部、２０…床部、２１…免震支持装置、２２…可動床部、２５…アンカーボルト、２７…取付けボルト

S: flat rubber spring, H: seismic isolation floor, J: seismic isolation support mechanism, 1 ... central core part, 2 ... corner part, 3 ... radiation bar part, 4 ... side bar part, 20 ... floor part, 21 ... Seismic isolation support device, 22 ... movable floor, 25 ... anchor bolt, 27 ... mounting bolt

Claims

Molded with a rubber material with predetermined spring characteristics,
It is formed into a flat plate body having a substantially regular polygonal shape and having a dense predetermined thickness, having a mounting hole at the center, and mounting holes at the corners.
A flat rubber spring characterized by that.

Molded with a rubber material with predetermined spring characteristics,
The plane shape is substantially formed into a regular polygon,
A small flat plate portion having a predetermined thickness at the central portion; a small flat plate portion having a predetermined thickness at the corner portion; and a rod shape extending radially from the small flat plate portion at the central portion to the small flat plate portion at the corner portion. Radiating rod body parts; and rod-shaped side bar body parts that connect the corner parts and the radiating rod body parts;
The small plate portion at the center and the small plate portion at each corner have mounting holes.
A flat rubber spring characterized by that.

3. The flat rubber spring according to claim 2, wherein the side bar portion connects each corner portion and connects the radiating rod portion in multiple stages and in parallel.

The flat rubber spring according to any one of claims 1 to 3, wherein the regular polygonal shape is a hexagonal shape.

In a movable structure system in which a movable support is interposed between two structures that are spaced apart from each other and relatively displaced from each other,
A flat rubber spring that is formed into a substantially polygonal flat plate with a rubber material having predetermined spring characteristics, and has mounting holes in the center and each corner, is used.
The center portion of the flat rubber spring is fixed to one structure, and the corner portion is fixed to the other structure.
A base-isolated structure characterized by that.

In a movable structure system in which a movable support is interposed between two structures that are spaced apart from each other and relatively displaced from each other,
A flat rubber spring that is formed into a substantially polygonal flat plate with a rubber material having predetermined spring characteristics, and has mounting holes in the center and each corner, is used.
The center portion of the flat rubber spring is fixed to the movable support that is linked to one structure, and the corner portion is fixed to the other structure.
A base-isolated structure characterized by that.

The seismic isolation structure according to claim 5, wherein the flat rubber spring is installed in a flat shape.

The seismic isolation structure according to claim 5 or 6, wherein the flat rubber spring is installed in a conical shape.