JPH0512489Y2 - - Google Patents

Info

Publication number
JPH0512489Y2
JPH0512489Y2 JP1987187815U JP18781587U JPH0512489Y2 JP H0512489 Y2 JPH0512489 Y2 JP H0512489Y2 JP 1987187815 U JP1987187815 U JP 1987187815U JP 18781587 U JP18781587 U JP 18781587U JP H0512489 Y2 JPH0512489 Y2 JP H0512489Y2
Authority
JP
Japan
Prior art keywords
hole
axial direction
rubber member
absorbing device
displacement absorbing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP1987187815U
Other languages
Japanese (ja)
Other versions
JPH0192513U (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1987187815U priority Critical patent/JPH0512489Y2/ja
Publication of JPH0192513U publication Critical patent/JPH0192513U/ja
Application granted granted Critical
Publication of JPH0512489Y2 publication Critical patent/JPH0512489Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【考案の詳細な説明】 (技術分野) 本考案は、複数の部材を変位可能に連結するた
めに用いる変位吸収装置に関し、特にトンネル履
工用のセグメントのうちトンネルの軸線方向に隣
り合うセグメントを相互に連結する手段の一部材
として好適な変位吸収装置に関する。
[Detailed Description of the Invention] (Technical Field) The present invention relates to a displacement absorbing device used to displaceably connect a plurality of members, and in particular, the present invention relates to a displacement absorbing device used to displaceably connect a plurality of members. The present invention relates to a displacement absorbing device suitable as part of an interconnecting means.

(従来技術) シールド型トンネル掘削機により掘削されたト
ンネルの一次履工法としては、一般に、複数のセ
グメントをボルトおよびナツトによりリング状に
組み付ける工法が採用されている。トンネルの軸
線方向に隣り合うセグメントリングは、所定値以
上の荷重がトンネルに作用したとき、隣り合うセ
グメントリングが相対的に変位することができる
ように、トンネルの軸線方向における複数箇所に
おいてボルトおよびナツトにより連結される。
(Prior Art) As a primary construction method for a tunnel excavated by a shield type tunnel excavator, a construction method in which a plurality of segments are assembled into a ring shape using bolts and nuts is generally adopted. Segment rings that are adjacent to each other in the axial direction of the tunnel are fitted with bolts and nuts at multiple locations in the axial direction of the tunnel so that when a load exceeding a predetermined value is applied to the tunnel, the adjacent segment rings can be relatively displaced. connected by.

複数の部材をボルトおよびナツトにより相互に
連結するとき、連結された部材の間に作用する圧
縮力または引張力に起因する変位を吸収するワツ
シヤーすなわち変位吸収装置を用いることが提案
されている。
When connecting a plurality of parts to each other by means of bolts and nuts, it has been proposed to use washers or displacement absorbing devices to absorb displacements due to compressive or tensile forces acting between the connected parts.

この種の変位吸収装置の1つとして、貫通穴を
有する一対の金属製円板と、貫通穴を有するゴム
製の円板状弾性体とを、前記貫通穴を一致させか
つ円板状弾性体を金属製円板の間に挟んだ状態に
積層したもの(たとえば、特開昭52−18565号公
報)、前記円板状弾性体の内径を軸線方向の一端
から他端に向けて漸次大にしたもの(実開昭60−
161714号公報)等が提案されている。
As one of this type of displacement absorbing device, a pair of metal disks having a through hole and a rubber disk-like elastic body having a through hole are arranged so that the through holes are aligned and the disk-like elastic body are sandwiched between metal discs (for example, JP-A-52-18565), and the inner diameter of the disc-shaped elastic body is gradually increased from one end to the other end in the axial direction. (Showa 60-
161714) etc. have been proposed.

しかし、前者では、貫通穴の軸線方向の各部位
における円板状弾性体の内径(貫通穴の直径)が
同じであり、また同方向の各部位における円板状
弾性体の外径が同じであるから、円板状弾性体を
圧縮変形させる力すなわち軸線方向の圧縮力Pが
作用すると、円板状弾性体の内周面が軸線の側に
大きく膨出し、また円板状弾性体の外周面が半径
方向外方へ大きく膨出する。このため、この装置
では、軸線方向への大きな引張力が円板状弾性体
の内周面および外周面に作用し、その結果円板状
弾性体が引き裂かれるように破断されてしまう。
また、この装置では、円板状弾性体の内周面およ
び外周面の大きな膨出により、円板状弾性体の断
面積(軸線と直交する面の広さA)が軸線方向の
部位により大きく異なり、その結果圧縮力Pに起
因して円板状弾性体に作用する応力P/Aが軸線
方向の部位により大きく異なつてしまう。
However, in the former case, the inner diameter (diameter of the through hole) of the disc-shaped elastic body at each location in the axial direction of the through hole is the same, and the outer diameter of the disc-shaped elastic body at each location in the same direction is the same. Therefore, when a force that compresses and deforms the disc-shaped elastic body, that is, a compressive force P in the axial direction, acts, the inner peripheral surface of the disc-shaped elastic body expands greatly toward the axis, and the outer periphery of the disc-shaped elastic body The surface bulges outward in the radial direction. Therefore, in this device, a large tensile force in the axial direction acts on the inner circumferential surface and the outer circumferential surface of the disc-shaped elastic body, and as a result, the disc-shaped elastic body is broken as if torn.
In addition, in this device, due to the large bulge of the inner peripheral surface and outer peripheral surface of the disc-shaped elastic body, the cross-sectional area (width A of the surface perpendicular to the axis) of the disc-shaped elastic body is larger in the axial direction. As a result, the stress P/A acting on the disc-shaped elastic body due to the compressive force P varies greatly depending on the location in the axial direction.

後者では、軸線方向の各部位における円板状弾
性体の外径が同じであるから、圧縮力Pが作用す
ると、円板状弾性体の外周面が半径方向外方へ大
きく膨出する。また、この装置では、円板状弾性
体の内径が軸線方向の一端から他端に向けて漸次
大になつているにすぎないから、圧縮力Pが作用
したときの円板状弾性体の内周面の膨出量が軸線
方向における部位により異なつてしまう。これら
の結果、後者でも、円板状弾性体が引き裂かれる
ように破断されてしまう。円板状弾性体の断面積
Aが軸線方向の部位により大きく異なり、その結
果圧縮力Pに起因して円板状弾性体に作用する応
力P/Aが軸線方向の部位により大きく異なつて
しまう、という課題を有する。
In the latter case, since the outer diameter of the disc-shaped elastic body is the same at each location in the axial direction, when the compressive force P is applied, the outer circumferential surface of the disc-shaped elastic body expands greatly outward in the radial direction. In addition, in this device, since the inner diameter of the disc-shaped elastic body only increases gradually from one end in the axial direction toward the other end, the inner diameter of the disc-shaped elastic body when compressive force P is applied The amount of bulge on the circumferential surface varies depending on the location in the axial direction. As a result, even in the latter case, the disc-shaped elastic body is broken as if torn. The cross-sectional area A of the disc-shaped elastic body differs greatly depending on the location in the axial direction, and as a result, the stress P/A acting on the disc-shaped elastic body due to the compressive force P varies greatly depending on the location in the axial direction. This poses a problem.

(考案の目的) 本考案は、圧縮力に起因する弾性部材の破断を
防止することができるとともに、圧縮力に起因し
て弾性部材に作用する応力をほぼ同じにすること
ができる変位吸収装置を提供することを目的とす
る。
(Purpose of the invention) The present invention provides a displacement absorbing device that can prevent breakage of an elastic member due to compressive force and can make the stress acting on the elastic member almost the same due to compressive force. The purpose is to provide.

(考案の構成) 本考案の変位吸収装置は、板状の一対の第1の
部材であつて該第1の部材のそれぞれがこれの厚
さ方向に貫通する穴を有し、前記穴の軸線方向に
間隔をおいてかつ互いに対向された第1の部材
と、弾性材料で形成された第2の部材であつて該
第2の部材を貫通する穴を有し、該穴の軸線が前
記第1の部材の前記穴の軸線と一致するように、
前記第1の部材の間に該第1の部材と一体的に配
置された第2の部材とを含み、前記第2の部材の
前記穴は該穴の軸線方向における両端部から中央
部に向けて漸次大となる直径寸法を有し、前記第
2の部材は該第2の部材の穴の軸線方向における
両端部から中央部に向けて漸次小となる外径寸法
を有することを特徴とする。
(Structure of the invention) The displacement absorbing device of the invention includes a pair of plate-shaped first members, each of which has a hole penetrating in the thickness direction thereof, and the axis of the hole a first member spaced apart in the direction and facing each other; and a second member formed of an elastic material, the second member having a hole passing through the second member, the axis of the hole being aligned with the first member. so that it coincides with the axis of the hole of member 1,
a second member disposed integrally with the first member between the first members, and the hole of the second member is oriented from both ends in the axial direction of the hole toward the center. The second member has an outer diameter that gradually becomes smaller from both ends toward the center in the axial direction of the hole of the second member. .

(考案の作用および効果) 本考案の変位吸収装置における貫通穴は、それ
らの軸線が一致されていることから、連結用ボル
トを通す穴として使用される。本考案の変位吸収
装置は、従来のワツシヤと同様に、連結用のボル
トの頭部と1つの被連結部材との間または連結用
のナツトと1つの被連結部材との間に配置され
る。
(Operations and Effects of the Invention) The through holes in the displacement absorbing device of the present invention are used as holes through which connecting bolts are passed since their axes are aligned. The displacement absorbing device of the present invention, like a conventional washer, is arranged between the head of a connecting bolt and one connected member or between a connecting nut and one connected member.

軸線方向への圧縮力が作用すると、弾性材料製
の第2の部材は。その内周面が内方へ膨出しかつ
外周面が半径方向外方へ膨出するように、圧縮変
形される。しかし、第2の部材の内径すなわち穴
の直径が軸線方向における両端部から中央部に向
けて漸次大となるから、前記圧縮力が作用して
も、第2の部材の内周面は、軸線方向の各部位に
おける内径がほぼ同じになるように膨出するにす
ぎない。同様に、第2の部材の外径が軸線方向に
おける両端部から中央部に向けて漸次小となるか
ら、前記圧縮力が作用しても、第2の部材の外周
面は、軸線方向の各部位における外径がほぼ同じ
になるように膨出するにすぎない。
When an axial compressive force is applied, the second member made of elastic material. It is compressed and deformed so that its inner circumferential surface bulges inward and its outer circumferential surface bulges radially outward. However, since the inner diameter of the second member, that is, the diameter of the hole, gradually increases from both ends in the axial direction toward the center, even if the compressive force is applied, the inner circumferential surface of the second member It merely bulges out so that the inner diameter at each location in the direction is approximately the same. Similarly, since the outer diameter of the second member gradually decreases from both ends in the axial direction toward the center, even if the compressive force is applied, the outer circumferential surface of the second member It merely bulges out so that the outer diameters at each site are approximately the same.

このため、本考案によれば、圧縮力に起因する
大きな引張力が第2の部材の内周面および外周面
に作用する恐れがなく、圧縮力に起因する弾性部
材の破断が防止される。また、軸線方向における
第2の部材の各部位の断面積がほぼ同じになり、
圧縮力に起因して軸線方向における第2の部材の
各部位に作用する応力がほぼ同じになる。
Therefore, according to the present invention, there is no fear that a large tensile force due to compressive force will act on the inner peripheral surface and outer peripheral surface of the second member, and breakage of the elastic member due to compressive force is prevented. Further, the cross-sectional area of each part of the second member in the axial direction is approximately the same,
The stress acting on each portion of the second member in the axial direction due to the compressive force is approximately the same.

(実施例) 以下、図面に示す本考案の実施例について説明
する。
(Example) Hereinafter, an example of the present invention shown in the drawings will be described.

第1図および第2図に示す変位吸収装置10
は、円板状の一対の第1の部材すなわち板部材1
2,14と、該板部材の間に配置された板状の第
2の部材すなわちゴム部材16とを含む。板部材
12,14は、鋼のような金属材料で作られてい
る。これに対し、ゴム部材16は、60度以上の硬
度を有するゴム、たとえばクロロプレンゴムで形
成されている。
Displacement absorbing device 10 shown in FIGS. 1 and 2
is a pair of disc-shaped first members, that is, plate member 1
2 and 14, and a plate-shaped second member, that is, a rubber member 16, disposed between the plate members. Plate members 12, 14 are made of a metal material such as steel. On the other hand, the rubber member 16 is made of rubber having a hardness of 60 degrees or more, such as chloroprene rubber.

ゴム部材16は、板部材12,14の厚さ寸法
より大きい厚さ寸法を有し、また、板部材12,
14と一体に形成されている。ゴム部材16の厚
さ寸法は、たとえば、板部材12,14の厚さ寸
法の3倍程度とすることができる。板部材12,
14とゴム部材16とは、ゴム部材の加硫時に接
着してもよいし、ゴム部材を加硫した後、接着剤
等により接着してもよい。
The rubber member 16 has a thickness dimension larger than that of the plate members 12 and 14, and also has a thickness dimension larger than that of the plate members 12 and 14.
It is formed integrally with 14. The thickness of the rubber member 16 can be, for example, about three times the thickness of the plate members 12 and 14. plate member 12,
14 and the rubber member 16 may be bonded together when the rubber member is vulcanized, or may be bonded together with an adhesive or the like after the rubber member is vulcanized.

板部材12,14およびゴム部材16は、それ
ぞれ、連結用のボルトを受け入れるように互いに
整合された穴18,20,22を有する。ゴム部
材16の穴22は、該穴の直径寸法が該穴の軸線
方向における両端部から中央部に向けて漸増する
ように、樽の形を有する。これに対し、ゴム部材
16の外径寸法は、穴22の軸線方向における両
端部から中央部に向けて漸次小さい。
Plate members 12, 14 and rubber member 16 each have holes 18, 20, 22 aligned with each other to receive coupling bolts. The hole 22 of the rubber member 16 has a barrel shape such that the diameter of the hole gradually increases from both ends in the axial direction of the hole toward the center. On the other hand, the outer diameter of the rubber member 16 gradually decreases from both ends in the axial direction of the hole 22 toward the center.

セグメント24,26の連結時、第3図に示す
ように、1つの変位吸収装置10がボルト28の
頭部30と一方のセグメント24との間に配置さ
れ、他の1つの変位吸収装置10が他方のセグメ
ント26とナツト32との間に配置される。この
際、板部材12,14およびゴム部材16が一体
であるから、板部材12,14およびゴム部材1
6の相対的な位置調整をする必要がなく、連結作
業が容易である。
When connecting the segments 24 and 26, as shown in FIG. It is located between the other segment 26 and the nut 32. At this time, since the plate members 12, 14 and the rubber member 16 are integrated, the plate members 12, 14 and the rubber member 1
There is no need to adjust the relative positions of the parts 6 and 6, and the connection work is easy.

ボルト28およびナツト32を螺合させて両変
位吸収装置10を締め付けると、ゴム部材16が
圧縮変形され、セグメント24,26が互いに突
き合わされる。この際、板部材12,14とゴム
部材16とが一体であるから、ゴム部材16は穴
22の軸線方向へ均一に圧縮される。また、ゴム
部材16が圧縮されているとき、セグメント2
4,26に相対的な変位が生じると、セグメント
24,26の変位は、ゴム部材16が伸長または
収縮することにより、確実に吸収される。さら
に、ゴム部材16が圧縮されると、ゴム部材16
が穴22の軸線と直角の方向へ膨出するが、穴2
2が樽の形状を有するから、ゴム部材16の前記
膨出がボルト28により妨げられない。
When the bolt 28 and nut 32 are screwed together and both displacement absorbers 10 are tightened, the rubber member 16 is compressed and deformed, and the segments 24 and 26 are butted against each other. At this time, since the plate members 12 and 14 and the rubber member 16 are integrated, the rubber member 16 is compressed uniformly in the axial direction of the hole 22. Furthermore, when the rubber member 16 is compressed, the segment 2
When a relative displacement occurs between the segments 24 and 26, the displacement of the segments 24 and 26 is reliably absorbed by the expansion or contraction of the rubber member 16. Furthermore, when the rubber member 16 is compressed, the rubber member 16
bulges out in the direction perpendicular to the axis of hole 22, but hole 2
2 has a barrel shape, the expansion of the rubber member 16 is not hindered by the bolt 28.

変位吸収装置10は、ゴム部材16が圧縮され
た状態に維持されているとき、両セグメント2
4,26に引張力が作用すると、両変位吸収装置
10が圧縮されることにより変位を吸収する。ま
た、ボルトに沿う曲げ力が両セグメント24,2
6に作用したときおよびボルト28の軸線と直交
する剪断力が両セグメント24,26に作用した
ときは、両変位吸収装置10は、一部が圧縮さ
れ、他の一部が伸長することにより変位を吸収す
る。
The displacement absorbing device 10 is configured such that when the rubber member 16 is maintained in a compressed state, both segments 2
When a tensile force is applied to 4 and 26, both displacement absorbing devices 10 are compressed to absorb the displacement. Also, the bending force along the bolt is
6 and when a shearing force perpendicular to the axis of the bolt 28 acts on both segments 24 and 26, both displacement absorbers 10 are partially compressed and the other part is expanded, causing displacement. absorb.

変位吸収装置10において、穴22の軸線方向
への圧縮力が作用するとゴム部材16は、その内
周面が内方へ膨出しかつ外周面が半径方向外方へ
膨出するように、圧縮変形される。しかし、ゴム
部材16の内径すなわち穴22の直径が軸線方向
における両端部から中央部に向けて漸次大となる
から、前記圧縮力が作用しても、ゴム部材16の
内周面は、軸線方向の各部位における内径がほぼ
同じになるように膨出するにすぎない。同様に、
ゴム部材16の外径が軸線方向における中央部か
ら両端部に向けて漸次小となるから、前記圧縮力
が作用しても、ゴム部材16の外周面は、軸線方
向の各部位における外径がほぼ同じになるように
膨出するにすぎない。
In the displacement absorbing device 10, when compressive force is applied in the axial direction of the hole 22, the rubber member 16 is compressively deformed so that its inner circumferential surface bulges inward and its outer circumferential surface bulges radially outward. be done. However, since the inner diameter of the rubber member 16, that is, the diameter of the hole 22, gradually increases from both ends in the axial direction toward the center, even when the compressive force is applied, the inner circumferential surface of the rubber member 16 is It merely bulges out so that the inner diameter at each part is approximately the same. Similarly,
Since the outer diameter of the rubber member 16 gradually decreases from the center to both ends in the axial direction, even when the compressive force is applied, the outer circumferential surface of the rubber member 16 has a smaller outer diameter at each location in the axial direction. It just bulges out to be almost the same.

このため、変位吸収装置10によれば、圧縮力
に起因する大きな引張力がゴム部材16の内周面
および外周面に作用する恐れがなく、圧縮力に起
因するゴム部材16の破断が防止される。また、
軸線方向におけるゴム部材16の各部位の断面積
Aがほぼ同じになり、圧縮力Pに起因して軸線方
向におけるゴム部材16の各部位に作用する応力
(P/A)がほぼ同じになる。
Therefore, according to the displacement absorbing device 10, there is no fear that a large tensile force due to compressive force will act on the inner and outer circumferential surfaces of the rubber member 16, and breakage of the rubber member 16 due to the compressive force is prevented. Ru. Also,
The cross-sectional area A of each portion of the rubber member 16 in the axial direction is approximately the same, and the stress (P/A) acting on each portion of the rubber member 16 in the axial direction due to the compressive force P is approximately the same.

なお、第4図および第5図に示す変位吸収装置
10aのように、板部材12a,14aおよびゴ
ム部材16aに、穴18,20,22の外にボル
トを受け入れるように互いに整合された1以上の
穴18a,20a,22aをさらに設けてもよ
い。
In addition, as in the displacement absorbing device 10a shown in FIGS. 4 and 5, one or more plate members 12a, 14a and the rubber member 16a are provided with one or more holes aligned with each other so as to receive bolts outside the holes 18, 20, 22. Further holes 18a, 20a, 22a may be provided.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本考案の変位吸収装置の一実施例を示
す斜視図、第2図は第1図の変位吸収装置の縦断
面図、第3図は第1図の変位吸収装置の使用状態
を示す断面図、第4図は本考案の変位吸収装置の
他の実施例を示す平面図、第5図は第4図の5−
5線に沿つて得た断面図である。 10,10a……変位吸収装置、12,14,
12a,14a……板部材(第1の部材)、16,
16a……ゴム部材(第2の部材)、18,20,
22,18a,20a,22a……穴。
Fig. 1 is a perspective view showing one embodiment of the displacement absorbing device of the present invention, Fig. 2 is a longitudinal cross-sectional view of the displacement absorbing device of Fig. 1, and Fig. 3 shows the usage state of the displacement absorbing device of Fig. 1. 4 is a plan view showing another embodiment of the displacement absorbing device of the present invention, and FIG. 5 is a sectional view shown in FIG.
FIG. 5 is a cross-sectional view taken along line 5; 10, 10a...displacement absorption device, 12, 14,
12a, 14a... plate member (first member), 16,
16a...Rubber member (second member), 18, 20,
22, 18a, 20a, 22a...hole.

Claims (1)

【実用新案登録請求の範囲】 (1) 板状の一対の第1の部材であつて該第1の部
材のそれぞれがこれの厚さ方向に貫通する穴を
有し、前記穴の軸線方向に間隔をおいてかつ互
いに対向された第1の部材と、弾性材料で形成
された第2の部材であつて該第2の部材を貫通
する穴を有し、該穴の軸線が前記第1の部材の
前記穴の軸線と一致するように、前記第1の部
材の間に該第1の部材と一体的に配置された第
2の部材とを含み、前記第2の部材の前記穴は
該穴の軸線方向における両端部から中央部に向
けて漸次大となる直径寸法を有し、前記第2の
部材は該第2の部材の穴の軸線方向における両
端部から中央部に向けて漸次小となる外径寸法
を有する、変位吸収装置。 (2) 前記第2の部材はゴム製である、実用新案登
録請求の範囲第(1)項に記載の変位吸収装置。
[Claims for Utility Model Registration] (1) A pair of plate-shaped first members, each of which has a hole penetrating in the thickness direction thereof, and a hole extending in the axial direction of the hole. a first member spaced apart and facing each other; and a second member formed of an elastic material, the second member having a hole passing through the second member, the axis of the hole being aligned with the first member. a second member disposed integrally with the first member between the first members so as to coincide with an axis of the hole in the second member; The second member has a diameter that gradually increases from both ends in the axial direction of the hole toward the center, and the second member has a diameter that gradually decreases from both ends in the axial direction of the hole of the second member toward the center. A displacement absorbing device with an outer diameter dimension of . (2) The displacement absorbing device according to claim (1), wherein the second member is made of rubber.
JP1987187815U 1987-12-11 1987-12-11 Expired - Lifetime JPH0512489Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987187815U JPH0512489Y2 (en) 1987-12-11 1987-12-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987187815U JPH0512489Y2 (en) 1987-12-11 1987-12-11

Publications (2)

Publication Number Publication Date
JPH0192513U JPH0192513U (en) 1989-06-16
JPH0512489Y2 true JPH0512489Y2 (en) 1993-03-31

Family

ID=31478946

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987187815U Expired - Lifetime JPH0512489Y2 (en) 1987-12-11 1987-12-11

Country Status (1)

Country Link
JP (1) JPH0512489Y2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5522971B2 (en) * 2009-05-14 2014-06-18 株式会社ダイナミックデザイン Rubber washer, and support and structure using the rubber washer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5218565A (en) * 1975-01-20 1977-02-12 Kuraray Plast Kk Antivibration washer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60161714U (en) * 1984-04-04 1985-10-26 日産自動車株式会社 Soundproof and vibration proof washers

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5218565A (en) * 1975-01-20 1977-02-12 Kuraray Plast Kk Antivibration washer

Also Published As

Publication number Publication date
JPH0192513U (en) 1989-06-16

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