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JP3645766B2 - Vibration and shock absorbing pads - Google Patents
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JP3645766B2 - Vibration and shock absorbing pads - Google Patents

Vibration and shock absorbing pads Download PDF

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Publication number
JP3645766B2
JP3645766B2 JP32683099A JP32683099A JP3645766B2 JP 3645766 B2 JP3645766 B2 JP 3645766B2 JP 32683099 A JP32683099 A JP 32683099A JP 32683099 A JP32683099 A JP 32683099A JP 3645766 B2 JP3645766 B2 JP 3645766B2
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vibration
protrusion
fitting
absorbing pad
fitting hole
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JP2001140983A (en
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浩司 道畑
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Kitagawa Industries Co Ltd
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Kitagawa Industries Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、二つの物体間に挟装され、一方の物体で発生した振動や衝撃が、他方の物体に伝達されることを防止する防振・衝撃吸収パッドに関する。
【0002】
【従来の技術】
従来より、射出成形機等、振動や衝撃(以下まとめて単に「振動等」という)を発生する機器を設置する場合や、精密な重量測定を行う電子秤等、振動の影響を受けやすい機器を設置する場合に、機器にて発生した振動等が周囲に伝達されたり、逆に、周囲で発生した振動等が機器に伝達されることを防止するため、機器と該機器の載置面(床や机など)との間に、弾性材料を板状に形成してなる防振パッドを挟装することが行われている。
【0003】
ところで、この種の防振パッドには、上述の機器や載置面との接触面に沿った横方向の振動等(以下「横振動」という)を主に吸収する振動吸収パッドと、この接触面と交差する方向に沿った縦方向の振動等(以下「縦振動」という)を主に吸収する衝撃吸収パッドとがある。
【0004】
このうち、横振動を吸収する振動吸収パッドP1は、例えば、図7(a)に示すように、表面(物体との接触面)に複数の突起P12を有する平板状に形成された弾性体からなる。
そして、この振動吸収パッドP1を挟装する機器P8或いは載置面P9のいずれかにて横振動が発生し、振動吸収パッドP1に横方向の荷重が加えられた場合、この荷重に従って接触面に形成された突起P12が揺動する。この時、突起P12の復元力(元の形状に戻ろうとする弾性力)が、この揺動を減衰させることにより、加えられた荷重、即ち横振動が吸収されることになる。
【0005】
一方、縦振動を吸収する衝撃吸収パッドP2は、例えば、図7(b)に示すように、互いの弾性力が異なり且つ積層して使用され、しかも積層面に互いに噛み合った形状を有する凹凸(図では三角形のエッジ状)が形成された一対の弾性部材P20,P22からなる。
【0006】
この衝撃吸収パッドP2を挟装する機器或いは載置面のいずれかにて縦振動が発生し、衝撃吸収パッドP2に縦方向の荷重が加えられた場合、この荷重は、弾性部材P20,P22の積層方向に向け伝達される。この時、凹凸に形成された積層面にて、荷重の伝達方向が分散されることにより、相手側の機器或いは載置面に達する荷重が弱められ、即ち縦振動が吸収されることになる。
【0007】
【発明が解決しようとする課題】
しかし、これら従来の振動吸収パッドP1及び衝撃吸収パッドP2は、それぞれ上述の特定方向の振動であれば十分に吸収できたが、この特定方向以外の振動、つまり、振動吸収パッドP1では縦振動,衝撃吸収パッドP2では横振動を有効に吸収することができなかった。このため、横振動,縦振動の両方への対処が要求される場合、これら従来の振動吸収パッドP1や衝撃吸収パッドP2を用いたのでは、十分に対処することができないという問題があった。
【0008】
特に、振動吸収パッドP1では、機器P8や載置面P9に対して突起P12を介して接触しており、接触面積が少ないため、機器P8や載置面P9に対してスリップしてしまうという問題もあった。なお、低硬度の弾性材料を用いて構成することにより、機器P8や載置面P9との接触面積を大きくしてスリップを防止することが考えられるが、この場合、機器P8を設置しただけで突起P12が大きく変形し、当該パッドP1の高さ方向の寸法が不安定になってしまうため、機器P8を安定して設置することができないという新たな問題が生じてしまう。
【0009】
そこで、本発明では、横振動及び縦振動のいずれに対しても十分な振動吸収性能を有し、しかも機器を安定して設置可能な防振・衝撃吸収パッドを提供することを目的とする。
【0010】
【課題を解決するための手段】
上記目的を達成するためになされた本発明は、板状の弾性部材を複数積層してなる防振・衝撃吸収パッドにおいて、前記弾性部材の他層との接触面には、積層時に互いに遊嵌し合う突起および嵌合孔からなる複数の遊嵌対が形成され、且つ該遊嵌対は、前記突起と前記嵌合孔の底部或いは側壁との間に形成される間隙の広さの異なるものが複数種類存在すると共に、外部からの荷重の印加時に生じる前記弾性部材間の相対的な変位が大きいほど、前記嵌合孔の壁面と前記突起との接触面積が増大する形状に形成されていることを特徴とする。
【0011】
このように構成された本発明の防振・衝撃吸収パッドでは、一方の弾性部材側で振動や衝撃が発生し、これら振動等により防振・衝撃吸収パッドに荷重が加わって弾性部材間に変位が生じると、その変位が大きくなるに従って、嵌合孔の壁面と突起との接触面積(以下「遊嵌対での接触面積」という)が増大する。そして、接触面積が増大するに従い、変位した状態から元の状態に戻ろうとする復元力(弾性部材の変位を阻止しようとする反発力)が増大することになる。
【0012】
つまり、本発明の防振・衝撃吸収パッドによれば、加えられる荷重の大きさに応じた復元力/反発力が得られるため、荷重を発生させた振動等を効果的に吸収することができる。
また、本発明の防振・衝撃吸収パッドでは、機器や機器の載置面に接触する接触面に、従来の振動吸収パッドP1のような突起を設ける必要がなく、機器や載置面との接触面積を広く確保できるため、弾性部材の硬度を必要以上に低くしなくても十分な表面摩擦抵抗が得られる。従って、本発明の防振・衝撃吸収パッドによれば、当該パッドの厚さ方向の寸法精度を十分に確保しつつ、これら機器や載置面に対するスリップも確実に防止できる。
【0013】
ところで、弾性部材の変形が大きいほど、嵌合孔の壁面と突起との接触面積が増大するような遊嵌対の形状とは、具体的には、例えば、次の請求項2,3記載のように構成することで実現できる。
即ち、請求項2記載のように、遊嵌対は、嵌合孔内の壁面と突起との間に形成される隙間のうち、荷重の印加方向にて両者が対向する部分の間隔が、遊嵌対毎にそれぞれ異なる広さ有するよう形成すればよい。
【0014】
この場合、弾性部材間の相対的な変位が大きくなるに従って、接触し合う遊嵌対の数が増大することにより、遊嵌対での接触面積が増大することになる。
より具体的には、全ての各遊嵌対で嵌合孔の径や深さを一定とし、各遊嵌対毎に突起の径や高さを異ならせたり、逆に、全ての遊嵌対で突起の径や高さを一定とし、各遊嵌対毎に嵌合孔の径や深さを異ならせることにより実現できる。もちろん、各遊嵌対毎に嵌合孔及び突起の双方について、径や深さ/高さを異ならせるように形成してもよい。
【0015】
また、請求項3記載のように、遊嵌対は、嵌合孔内の壁面と前記突起との間に形成される隙間のうち、荷重の印加方向にて両者が対向する部分の間隔が、突起の根元部分から先端部分にかけて徐々に狭くなる形状に形成してもよい。
この場合、弾性部材間の積層面に沿った横方向への相対的な変位が大きくなるに従って、各遊嵌対のそれぞれにて、嵌合孔の壁面と突起とが接触する部分が増大することにより、全体的に遊嵌対での接触面積が増大することになる。
【0016】
より具体的には、嵌合孔の壁面又は突起の側面のいずれか一方を傾斜させて形成するか、両者の傾斜角が互いに異なるように形成することにより実現できる。次に、請求項4記載の防振・衝撃吸収パッドでは、請求項1ないし請求項3いずれか記載の防振・衝撃吸収パッドにおいて、弾性部材は、隣接する他層とは互いに異なった弾性力を有することを特徴とする。
【0017】
この場合、上述した従来の衝撃吸収パッドでの縦振動の吸収作用と、遊嵌対での接触面積が徐々に増大することに基づく縦振動の吸収作用との相互作用により、弾性部材の積層方向に沿った縦振動をより効果的に吸収することができる。
【0018】
【発明の実施の形態】
以下、本発明の実施形態を図面と共に説明する。
本実施形態の防振・衝撃吸収パッド1は、積層した状態で使用される一対の吸収パッド2,3からなり、便宜上、一方を上部吸収パッド2,他方を下部吸収パッド3とよぶ。
【0019】
ここで、図2(a)は上部吸収パッド2を下部吸収パッド3との積層面側から見た平面図、図2(b)はA−A’断面図、図2(c)はB−B’断面図、図2(d)は積層面の一部を拡大して示した説明図である。また、図3(a)は、下部吸収パッド3を上部吸収パッド2との積層面側から見た平面図、図3(b)はa−a’断面図、図3(c)はb−b’断面図、図3(d)は積層面の一部を拡大して示した説明図である。
【0020】
まず、上部吸収パッド2は、図2(a)〜(d)に示すように、正方形の平面形状を有する板状に形成されており、その一方の面には、円柱状に突設された突起24が多数形成されていると共に、該面の周囲縁部に堰部26が形成されている。
【0021】
突起24は、具体的には、直径及び高さがそれぞれ異なった4種類のもの(第1突起24a,第2突起24b,第3突起24c,第4突起24dとよぶ)があり、直径については、第1突起24aが最も大きく、以下、第2突起24b,第3突起24c,第4突起24dの順に小さくなり、また、高さについては、第1突起24aが最も低く、以下、第2突起24b,第3突起24c,第4突起24dの順に高くなるように構成されている。
【0022】
そして、図中横方向に並んだ突起列に着目した場合、第1突起24a及び第4突起24dが直線状に交互に配置された列(図2(b)参照)と、第2突起24b及び第3突起24cが直線状に交互に配置された列(図2(c)参照)とが交互に配列され、また、図中縦方向に並んだ突起列に着目した場合、第1突起24a及び第2突起24bが直線状に交互に配置された列と、第3突起24c及び第4突起24dが直線状に交互に配置された列とが交互に配列されている。つまり、図2(d)に示すように、各突起24a〜24dの中心点が、散点格子上に位置するよう規則正しく配列されている。
【0023】
一方、下部吸収パッド3は、図3(a)〜(d)に示すように、上部吸収パッド2と同じ大きさで且つ同じ平面形状(即ち正方形)を有する板状に形成されており、その一方の面には、開口部の直径が底部の直径よりも大きくなるよう円錐台状に堀穿された嵌合孔34が多数形成されている。
【0024】
嵌合孔34は、具体的には、孔径及び深さがそれぞれ異なった4種類のもの(第1嵌合孔34a,第2嵌合孔34b,第3嵌合孔34c,第4嵌合孔34dとよぶ)があり、孔径については、第1嵌合孔34aが最も大きく、以下、第2嵌合孔34b,第3嵌合孔34c,第4嵌合孔34dの順に小さくなり、また、深さについては、第1嵌合孔34aが最も浅く、以下、第2嵌合孔34b,第3嵌合孔34c,第4嵌合孔34dの順に深くなるように構成されている。
【0025】
そして、図中横方向に並んだ嵌合孔列に着目した場合、第1嵌合孔34a及び第4嵌合孔34dが直線状に交互に配置された列(図3(b)参照)と、第2嵌合孔34b及び第3嵌合孔34cが直線状に交互に配置された列(図3(c)参照)とが交互に配列され、また、図中縦方向に並んだ嵌合孔列に着目した場合、第1嵌合孔34a及び第2嵌合孔34bが直線状に交互に配置された列と、第3嵌合孔34c及び第4嵌合孔34dが直線状に交互に配置された列とが交互に配列されている。つまり、図3(d)に示すように、各嵌合孔34a〜34dの中心点が、各突起24a〜24dと同じ大きさの散点格子上に位置するよう規則正しく配列されている。
【0026】
以下では、上部吸収パッド2及び下部吸収パッド3において、それぞれ突起24,嵌合孔34の形成面を積層面22,32、その反対側の面を外部接触面とよぶ。
また、両吸収パッド2,3は、互いの積層面22,32を対向させた時、第1突起24aと第1嵌合孔34a,第2突起24bと第2嵌合孔34b,第3突起24cと第3嵌合孔34c,第4突起24dと第4嵌合孔34dがそれぞれ対向するように配置され、以下、これら対向する突起と嵌合孔とからなる組を、それぞれ第1〜第4遊嵌対とよぶ。
【0027】
そして、第4遊嵌対24d,34dでは、突起の直径と嵌合孔の底部の直径とは等しい大きさに形成されており、以下、嵌合孔の底部の直径から突起の直径を差し引いた大きさが、第3遊嵌対24c,34c、第2遊嵌対24b,34b、第1遊嵌対24a,34aの順に大きくなるように構成されている。
【0028】
なお、上部吸収パッド2及び下部吸収パッド3は、弾性材料(例えばブチルゴム)にてそれぞれ一体成形されており、しかも、上部吸収パッド2では、硬度がJIS K6301のA10である弾性材料が用いられ、また下部吸収パッド3では、硬度がJIS A6301のA35である弾性材料が用いられている。好ましくは、対象物(機器)を設置した際に、24d(上部一番細い突起)のひずみが0.1以下になるように材料硬度、支持面積を選択するとよい。
【0029】
以上のように構成された上部吸収パッド2及び下部吸収パッド3を、互いの積層面22,32を対向させ、各遊嵌対が互いに対向するよう位置決めした状態で組み合わせることにより、両吸収パッド2,3を積層し、堰部26を下部吸収パッド3の周縁部に接着することで本実施形態の防振・衝撃吸収パッド1が作製される。なお、堰部26は、積層された両吸収パッド2,3の隙間から、ゴミ等が侵入することを防止するためのものである。
【0030】
このように構成された本実施形態の防振・衝撃吸収パッド1は、例えば、図1に示すように、非常に精密な重量測定を行う電子秤Dを載置台上に載置する際に、電子秤Dと載置台の載置面との間に挟装する等して使用する。ここでは、電子秤Dの4隅にそれぞれ本実施形態の防振・衝撃吸収パッド1を配置している。
【0031】
ここで、図4は、防振・衝撃吸収パッド1の断面図であり、(a)は、図2及び図3におけるA−A’断面及びa−a’断面に対応する部分の断面を示したものであり、(b)は、同じくB−B’断面及びb−b’断面に対応する部分の断面を示したものである。
【0032】
図4に示すように、防振・衝撃吸収パッド1に荷重が印加されていない場合、第4突起24dの先端が、第4嵌合孔34dの底部に当接する位置にて、突起24a〜24dは、それぞれ、嵌合孔34a〜34dに遊嵌された状態となる。この時、各遊嵌対にて、突起と嵌合孔の底部或いは側壁との間に形成される間隙は、第4遊嵌対24d,34dにて最も狭く(底部では当接している)、第3遊嵌対24c,34c、第2遊嵌対24b,34b、第1遊嵌対24a,34aの順に広くなっている。
【0033】
次に、本実施形態の防振・衝撃吸収パッド1に、外部接触面に沿った横方向の荷重が加わった場合の動作、及び外部接触面と交差する縦方向の荷重が加わった場合の動作を説明する。
但し、図5,図6は実際の断面図ではなく、動作をわかりやすくするために、第2〜第4遊嵌対を並べて示した模式図である。また、特に図5では、上部吸収パッド2の外部接触面に荷重が加わった場合を表している。
【0034】
まず、図5(a)は、防振・衝撃吸収パッド1に横方向の荷重が加えられる前の様子を示すものである。そして、上部吸収パッド2に横方向の荷重が加わり、上部吸収パッド2が下部吸収パッド3に対して横方向に変位すると、図5(b)に示すように、当初から第4嵌合孔34dの底部に当接している第4突起24dが弾性変形を開始し、変位に伴って、第4突起24dが第4嵌合孔34dの側壁に押し付けられるように変形し、両者間の接触面積が増大する。この時、他の第1〜第3遊嵌対でも、嵌合孔内を突起が移動し、これらのうち、第3突起24cが第3嵌合孔34cの側壁に最初に当接する。
【0035】
この状態から更に上部吸収パッド2が変位すると、図5(c)に示すように、嵌合孔34cの側壁に当接した第3突起24cが弾性変形を開始し、先の第4突起と同様に、上部吸収パッド2の変位に伴った、第3突起24cが第3嵌合孔34cの側壁に押し付けら得るように変形し、両者間の接触面積が増大する。この間、第4突起24dは、第4嵌合孔34dの側壁に押し付けられ、自身が弾性変形すると共に、嵌合孔34dの側壁も孔を押し広げる方向に変形させるよう作用する。
【0036】
以下、更に上部吸収パッド2が変位すると、その変位に伴って、次は第2突起24bが第2嵌合孔34bの側壁に当接し、引き続き第1突起24aが第1嵌合孔34aの側壁に当接して同様に動作する。ここでは、上部吸収パッド2に荷重が加わった場合を説明したが、逆に下部吸収パッド3或いは両パッド2,3に荷重が加わった場合も全く同様に動作する。
【0037】
つまり、防振・衝撃吸収パッド1に横方向の荷重が加わった場合、両吸収パッド2,3が積層面22,32に沿って相対的に変位し、その変位量が大きくなるに従って、嵌合孔34の側壁に当接して屈曲されるように弾性変形する突起24の数が段階的に多くなる。その結果、突起24及び突起24の当接部分では、元の状態に戻ろうとする復元力(変位を阻止しようとする反発力)が増大し、印加された荷重を急速に減衰させるのである。
【0038】
次に、図6(a)は、防振・衝撃吸収パッド1に縦方向の荷重が加えられる前の様子を示すものである。そして、防振・衝撃吸収パッド1に縦方向の荷重が加わり、上部吸収パッド2が下部吸収パッド3に押し付けられる方向(縦方向)に変位すると、図6(b)に示すように、当初から第4嵌合孔34dの底部に当接している第4突起24dが横方向に向かって拡膨するように弾性変形する。この時、他の第1〜第3遊嵌対でも、嵌合孔内を突起が移動し、これらのうち、第3突起24cが第3嵌合孔34cの底部に最初に当接する。
【0039】
この状態から更に上部吸収パッド2が変位すると、図6(c)に示すように、嵌合孔34cの側壁に当接した第3突起24cも、先の第4突起24dと同様に、横方向に向かって拡膨するように弾性変形する。
以下、更に上部吸収パッド2が変位すると、その変位に伴って、次は第2突起24bが第2嵌合孔34bの底部に当接し、引き続き第1突起24aが第1嵌合孔34aの底部に当接して同様に動作する。
【0040】
つまり、防振・衝撃吸収パッド1に縦方向の荷重が加わった場合、両吸収パッド2,3は、より接近する方向に相対的に変位し、その変位量が大きくなるに従って、嵌合孔34の底部に当接して押しつぶされるように弾性変形する突起24の数が段階的に多くなる。その結果、突起24及び突起24の当接部分では、元の形状に戻ろうとする復元力(変形を阻止しようとする反発力)が増大し、印加された荷重を急速に減衰させるのである。
【0041】
また、この時、嵌合孔34の底部に押圧され弾性変形した突起24は、傾斜して形成された嵌合孔34の側壁にも当接する。そして、このように当接面が、荷重の加わる方向(縦方向)に対して傾斜していること、及び当接する両吸収パッド2,3の材質(硬度)が異なっていることから、印加された荷重は、両者の当接部にて、その伝達方向が分散されることにより、荷重印加側に対する相手側の外部接触面に達する荷重は更に減衰する。
【0042】
以上説明したように、本実施形態の防振・衝撃吸収パッド1においては、外部接触面を介して、上部吸収パッド2及び下部吸収パッド3が外部接触面に沿った横方向、或いは外部接触面と交差する縦方向のいずれの方向に荷重が印加された場合でも、この印加された荷重に基づく両吸収パッド2,3の相対的な変位に伴って、嵌合孔34の壁面或いは底部に当接し弾性変形する突起24の数(ひいては両者間の接触面積)が段階的に増加するようにされている。
【0043】
従って、本実施形態の防振・衝撃吸収パッドによれば、両パッド2,3の相対的な変位の大きさ、即ち加えられた荷重の大きさに応じて、荷重が大きいほど大きな復元力(反発力)が発生するため、どのような荷重が加えられたとしても、その荷重を発生させた振動や衝撃を急速に減衰させ、これを効果的に吸収することができる。
【0044】
また、本実施形態の防振・衝撃吸収パッド1では、突起24及び嵌合孔34がいずれも断面円形状に形成されているため、外部接触面に沿ったいずれの方向の振動に対しても、均等な振動吸収特性を得ることができる。
更に、本実施形態の防振・衝撃吸収パッド1では、径や高さの異なる4種類の突起24a〜24dが用いられており、各突起24a〜24dはそれぞれ異なった固有振動数を有しているので、いずれかの突起24が共振してしまったとしても、その影響を受けることなく他の突起24の作用によって確実に振動を吸収でき、広い周波数範囲の振動を吸収することができる。
【0045】
なお、本実施形態の防振・衝撃吸収パッド1は、上述のように、周囲から伝達される振動を遮断する必要のある電子秤Dを設置する際に限らず、逆に、射出成形機等の振動を発生する機器を設置する際に、その機器と機器を載置する床との間に防振・衝撃吸収パッド1を挟装し、該機器にて発生した振動が周囲に伝達されることを防止するために用いてもよい。つまり、振動の伝達を防止する必要のある場所であれば、どのような場所に使用してもよい。
【0046】
また、本実施形態では、上部吸収パッド2に突起24のみを設け、下部吸収パッド3に嵌合孔34のみを設けたが、突起24と嵌合孔34とは、どちらの側に設けてもよく、また、同一パッドに突起24と嵌合孔34とを混在させてもよい。
【0047】
更に、突起24の形状は、円柱状に限らず、多角柱状,半球状、角錐状、円錐状、楕円錐状、三角錐状等、他の物体と点接触或いは線接触し得る突部を有するものであれば、どの様な形状でもよい。
また、上部吸収パッド2及び下部吸収パッド3を製造する際に、その材料に所望のフィラーを適宜混練することにより、例えば、熱伝導性,導電性,電磁波吸収性,電磁波遮蔽性,制振性,吸音性,遮音性,断熱性,磁力性等の性質を付与してもよい。
【図面の簡単な説明】
【図1】 本実施形態の防振・衝撃吸収パッドを電子秤と載置台との間に挟装した様子を表す斜視図である。
【図2】 本実施形態の上部吸収パッドの平面図、断面図である。
【図3】 本実施形態の下部吸収パッドの平面図、断面図である。
【図4】 本実施形態の防振・衝撃吸収パッドの断面図である。
【図5】 本実施形態の防振・衝撃吸収パッドに横揺れが作用したとき、突起がどのように動作するかを説明するための模式図である。
【図6】 本実施形態の防振・衝撃吸収パッドに縦揺れが作用したとき、突起がどのように動作するかを説明するための模式図である。
【図7】 従来の防振パッドの側面図及び模式図である。
【符号の説明】
1…防振・衝撃吸収パッド 2…上部吸収パッド
3…下部吸収パッド 22…積層面 26…堰部
24(24a〜24d)…突起 34(34a〜34d)…嵌合孔
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vibration-proof and shock-absorbing pad that is sandwiched between two objects and prevents vibrations and shocks generated in one object from being transmitted to the other object.
[0002]
[Prior art]
Conventionally, equipment that is susceptible to vibration, such as an injection molding machine or other equipment that generates vibration or shock (hereinafter simply referred to as “vibration”), or an electronic scale that performs precise weight measurement. When installing, in order to prevent vibration generated in the equipment from being transmitted to the surroundings, and conversely, vibration generated in the surroundings from being transmitted to the equipment, the equipment and the mounting surface (floor or An anti-vibration pad formed by forming an elastic material into a plate shape is sandwiched between a desk and the like.
[0003]
By the way, this type of vibration isolating pad includes a vibration absorbing pad that mainly absorbs a lateral vibration or the like (hereinafter referred to as “lateral vibration”) along the contact surface with the above-described device or the mounting surface, and this contact. There is an impact absorbing pad that mainly absorbs vibrations in the vertical direction along the direction intersecting the surface (hereinafter referred to as “longitudinal vibration”).
[0004]
Among these, the vibration absorbing pad P1 that absorbs the lateral vibration is, for example, as shown in FIG. 7A from an elastic body formed in a flat plate shape having a plurality of protrusions P12 on the surface (contact surface with the object). Become.
When a lateral vibration occurs in either the device P8 or the mounting surface P9 that sandwiches the vibration absorbing pad P1, and a lateral load is applied to the vibration absorbing pad P1, the contact surface is applied according to this load. The formed projection P12 swings. At this time, the restoring force of the projection P12 (elastic force to return to the original shape) attenuates the swing, so that the applied load, that is, the lateral vibration is absorbed.
[0005]
On the other hand, for example, as shown in FIG. 7B, the shock absorbing pad P2 that absorbs longitudinal vibration is used by being laminated with different elastic forces, and also has unevenness that has a shape meshed with each other on the laminated surface ( It consists of a pair of elastic members P20 and P22 formed with a triangular edge in the figure.
[0006]
When longitudinal vibration occurs in either the device or the mounting surface that sandwiches the shock absorbing pad P2, and a vertical load is applied to the shock absorbing pad P2, this load is applied to the elastic members P20 and P22. Transmitted in the stacking direction. At this time, the load transmission direction is dispersed on the laminated surface formed in the unevenness, so that the load reaching the counterpart device or the mounting surface is weakened, that is, the longitudinal vibration is absorbed.
[0007]
[Problems to be solved by the invention]
However, these conventional vibration absorbing pads P1 and shock absorbing pads P2 can sufficiently absorb the vibrations in the specific direction described above. However, vibrations other than the specific direction, that is, longitudinal vibrations in the vibration absorbing pad P1, The shock absorbing pad P2 could not effectively absorb the lateral vibration. For this reason, when it is required to deal with both lateral vibration and longitudinal vibration, there is a problem that the conventional vibration absorbing pad P1 and shock absorbing pad P2 cannot be adequately dealt with.
[0008]
In particular, the vibration absorbing pad P1 is in contact with the device P8 and the mounting surface P9 via the projection P12, and has a small contact area, so that it slips with respect to the device P8 and the mounting surface P9. There was also. Note that it is possible to prevent slip by increasing the contact area with the device P8 and the mounting surface P9 by using a low-hardness elastic material. In this case, the device P8 is simply installed. Since the protrusion P12 is greatly deformed and the dimension in the height direction of the pad P1 becomes unstable, a new problem arises that the device P8 cannot be stably installed.
[0009]
Therefore, an object of the present invention is to provide a vibration-proof / impact-absorbing pad that has sufficient vibration absorption performance for both lateral vibration and longitudinal vibration and that can stably install equipment.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a vibration-proof and shock-absorbing pad formed by laminating a plurality of plate-like elastic members, and is loosely fitted to the contact surface with the other layer of the elastic member at the time of lamination. A plurality of loosely-fitting pairs composed of mating protrusions and fitting holes are formed, and the loosely-fitting pairs have different gaps formed between the protrusions and the bottoms or side walls of the fitting holes. Are formed in a shape in which the contact area between the wall surface of the fitting hole and the protrusion increases as the relative displacement between the elastic members generated when an external load is applied increases. It is characterized by that.
[0011]
In the vibration-proof / impact-absorbing pad of the present invention configured as described above, vibration or shock is generated on one elastic member side, and a load is applied to the vibration-proof / impact-absorbing pad due to the vibration or the like to be displaced between the elastic members. When this occurs, the contact area between the wall surface of the fitting hole and the protrusion (hereinafter referred to as “contact area in a loose fitting pair”) increases as the displacement increases. Then, as the contact area increases, a restoring force (repulsive force for preventing displacement of the elastic member) to return from the displaced state to the original state increases.
[0012]
That is, according to the vibration-proof / impact-absorbing pad of the present invention, a restoring force / repulsive force corresponding to the magnitude of the applied load can be obtained, so that the vibration or the like that caused the load can be effectively absorbed. .
Further, in the vibration-proof / impact-absorbing pad of the present invention, it is not necessary to provide a projection like the conventional vibration-absorbing pad P1 on the contact surface that comes into contact with the device or the mounting surface of the device. Since a wide contact area can be ensured, sufficient surface friction resistance can be obtained without reducing the hardness of the elastic member more than necessary. Therefore, according to the vibration-proof / impact-absorbing pad of the present invention, it is possible to reliably prevent slipping with respect to these devices and the mounting surface while sufficiently ensuring the dimensional accuracy in the thickness direction of the pad.
[0013]
By the way, as the deformation of the elastic member increases, the shape of the loose-fitting pair in which the contact area between the wall surface of the fitting hole and the protrusion increases. This can be realized by configuring as described above.
That is, as described in claim 2, in the loose fitting pair, the gap between the portions formed in the fitting direction in the gap formed between the wall surface and the protrusion in the fitting hole has a loose interval. What is necessary is just to form so that it may have a different width | variety for every fitting pair, respectively.
[0014]
In this case, as the relative displacement between the elastic members increases, the number of loose fitting pairs in contact with each other increases, so that the contact area in the loose fitting pair increases.
More specifically, the diameter and depth of the fitting holes are constant for all the loose fitting pairs, and the diameter and height of the protrusions are different for each loose fitting pair. This can be realized by making the diameter and height of the protrusions constant and making the diameter and depth of the fitting holes different for each loose fitting pair. Of course, for each loose fitting pair, both the fitting hole and the protrusion may be formed so as to have different diameters and depths / heights.
[0015]
In addition, as described in claim 3, in the loosely-fitting pair, in the gap formed between the wall surface in the fitting hole and the projection, the interval between the parts facing each other in the load application direction is You may form in the shape which becomes narrow gradually from the base part of a processus | protrusion to the front-end | tip part.
In this case, as the relative displacement in the lateral direction along the laminating surface between the elastic members increases, the portion where the wall surface of the fitting hole and the protrusion come into contact increases in each loose fitting pair. As a result, the contact area of the loose-fitting pair increases as a whole.
[0016]
More specifically, it can be realized by forming either the wall surface of the fitting hole or the side surface of the protrusion by inclining, or by forming the both inclining angles different from each other. Next, in the vibration proof / impact absorbing pad according to claim 4, in the vibration proof / impact absorbing pad according to claim 1, the elastic member has an elastic force different from that of the adjacent other layer. It is characterized by having.
[0017]
In this case, the elastic member is laminated in the stacking direction due to the interaction between the longitudinal vibration absorbing action of the conventional shock absorbing pad described above and the longitudinal vibration absorbing action based on the gradual increase in the contact area of the loose-fitting pair. Longitudinal vibration along the line can be absorbed more effectively.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The vibration-proof / impact-absorbing pad 1 of this embodiment is composed of a pair of absorbing pads 2 and 3 that are used in a stacked state, and for convenience, one is called the upper absorbing pad 2 and the other is the lower absorbing pad 3.
[0019]
Here, FIG. 2A is a plan view of the upper absorbent pad 2 viewed from the side of the laminated surface with the lower absorbent pad 3, FIG. 2B is a cross-sectional view taken along the line AA ′, and FIG. B 'sectional drawing and FIG.2 (d) are explanatory drawings which expanded and showed a part of laminated surface. 3A is a plan view of the lower absorbent pad 3 viewed from the side of the laminated surface with the upper absorbent pad 2, FIG. 3B is an aa ′ cross-sectional view, and FIG. b 'sectional drawing and FIG.3 (d) are explanatory drawings which expanded and showed a part of laminated surface.
[0020]
First, as shown in FIGS. 2A to 2D, the upper absorbent pad 2 is formed in a plate shape having a square planar shape, and is protruded in a cylindrical shape on one surface thereof. A large number of protrusions 24 are formed, and a weir 26 is formed at the peripheral edge of the surface.
[0021]
Specifically, there are four types of projections 24 having different diameters and heights (referred to as first projection 24a, second projection 24b, third projection 24c, and fourth projection 24d). The first protrusion 24a is the largest, and the second protrusion 24b, the third protrusion 24c, and the fourth protrusion 24d become smaller in this order, and the height of the first protrusion 24a is the lowest. 24b, 3rd protrusion 24c, and 4th protrusion 24d are comprised so that it may become high in order.
[0022]
When attention is paid to the protrusion rows arranged in the horizontal direction in the figure, the first protrusions 24a and the fourth protrusions 24d are alternately arranged in a straight line (see FIG. 2B), the second protrusions 24b, When the third protrusions 24c are alternately arranged in a straight line (see FIG. 2 (c)), and when attention is paid to the protrusion lines arranged in the vertical direction in the figure, the first protrusions 24a and The rows in which the second protrusions 24b are alternately arranged in a straight line and the rows in which the third protrusions 24c and the fourth protrusions 24d are alternately arranged in a straight line are alternately arranged. That is, as shown in FIG. 2D, the center points of the protrusions 24a to 24d are regularly arranged so as to be positioned on the scattered dot lattice.
[0023]
On the other hand, as shown in FIGS. 3A to 3D, the lower absorbent pad 3 is formed in a plate shape having the same size as the upper absorbent pad 2 and the same planar shape (that is, a square). On one surface, there are formed a large number of fitting holes 34 that are dug in a truncated cone shape so that the diameter of the opening is larger than the diameter of the bottom.
[0024]
Specifically, there are four types of fitting holes 34 having different hole diameters and depths (first fitting hole 34a, second fitting hole 34b, third fitting hole 34c, and fourth fitting hole. 34d), and the hole diameter is the largest in the first fitting hole 34a, and the second fitting hole 34b, the third fitting hole 34c, and the fourth fitting hole 34d are reduced in this order, Regarding the depth, the first fitting hole 34a is the shallowest, and the second fitting hole 34b, the third fitting hole 34c, and the fourth fitting hole 34d are configured to be deeper in the following order.
[0025]
And when paying attention to the fitting hole row arranged in the horizontal direction in the figure, the first fitting hole 34a and the fourth fitting hole 34d are arranged alternately in a straight line (see FIG. 3 (b)). The second fitting holes 34b and the third fitting holes 34c are alternately arranged in a row (see FIG. 3C) in which the second fitting holes 34b and the third fitting holes 34c are alternately arranged in a straight line. When paying attention to the hole rows, the first fitting holes 34a and the second fitting holes 34b are alternately arranged in a straight line, and the third fitting holes 34c and the fourth fitting holes 34d are alternately arranged in a straight line. Are arranged alternately. That is, as shown in FIG. 3 (d), the center points of the fitting holes 34a to 34d are regularly arranged so as to be positioned on a dotted grid having the same size as the protrusions 24a to 24d.
[0026]
Hereinafter, in the upper absorbent pad 2 and the lower absorbent pad 3, the formation surfaces of the protrusions 24 and the fitting holes 34 are referred to as laminated surfaces 22 and 32, and the opposite surfaces are referred to as external contact surfaces.
Moreover, when both the absorption pads 2 and 3 make the lamination | stacking surfaces 22 and 32 mutually oppose, the 1st protrusion 24a, the 1st fitting hole 34a, the 2nd protrusion 24b, the 2nd fitting hole 34b, and the 3rd protrusion 24c and the third fitting hole 34c, and the fourth protrusion 24d and the fourth fitting hole 34d are arranged so as to face each other. Hereinafter, the pairs of the facing protrusion and the fitting hole are respectively referred to as the first to the first. It is called 4 loose-fitting pairs.
[0027]
In the fourth loose-fitting pair 24d, 34d, the diameter of the protrusion and the diameter of the bottom of the fitting hole are formed to be equal to each other. Hereinafter, the diameter of the protrusion is subtracted from the diameter of the bottom of the fitting hole. The size is configured to increase in the order of the third loose-fitting pair 24c, 34c, the second loose-fitting pair 24b, 34b, and the first loose-fitting pair 24a, 34a.
[0028]
The upper absorbent pad 2 and the lower absorbent pad 3 are integrally formed of an elastic material (for example, butyl rubber), and the upper absorbent pad 2 is made of an elastic material having a hardness of A10 of JIS K6301. The lower absorbent pad 3 is made of an elastic material having a hardness of A35 of JIS A6301. Preferably, the material hardness and the support area are selected so that the strain of 24d (the thinnest uppermost protrusion) is 0.1 or less when the object (device) is installed.
[0029]
By combining the upper absorbent pad 2 and the lower absorbent pad 3 configured as described above in a state where the laminated surfaces 22 and 32 are opposed to each other and the loosely fitted pairs are positioned so as to face each other, both absorbent pads 2 are combined. , 3 are laminated and the dam portion 26 is bonded to the peripheral edge of the lower absorbent pad 3 to produce the vibration proof / impact absorbent pad 1 of the present embodiment. The weir portion 26 is for preventing dust and the like from entering through the gap between the laminated absorbent pads 2 and 3.
[0030]
The vibration-proof and shock-absorbing pad 1 of the present embodiment configured as described above, for example, as shown in FIG. 1, when placing an electronic balance D that performs very precise weight measurement on a placement table, It is used by being sandwiched between the electronic balance D and the mounting surface of the mounting table. Here, the vibration-proof and shock-absorbing pads 1 of the present embodiment are arranged at the four corners of the electronic balance D, respectively.
[0031]
Here, FIG. 4 is a cross-sectional view of the vibration proof / impact absorbing pad 1, and (a) shows a cross section of a portion corresponding to the AA ′ cross section and the aa ′ cross section in FIGS. 2 and 3. (B) shows the cross section of the part corresponding to a BB 'cross section and a bb' cross section similarly.
[0032]
As shown in FIG. 4, when no load is applied to the vibration proof / impact absorbing pad 1, the protrusions 24 a to 24 d are positioned at positions where the tip of the fourth protrusion 24 d abuts the bottom of the fourth fitting hole 34 d. Are loosely fitted in the fitting holes 34a to 34d, respectively. At this time, in each loose fitting pair, the gap formed between the protrusion and the bottom or side wall of the fitting hole is the narrowest in the fourth loose fitting pair 24d, 34d (the bottom is in contact), The third loose fitting pair 24c, 34c, the second loose fitting pair 24b, 34b, and the first loose fitting pair 24a, 34a become wider in this order.
[0033]
Next, an operation when a lateral load along the external contact surface is applied to the vibration proof / impact absorbing pad 1 of the present embodiment and an operation when a vertical load intersecting the external contact surface is applied. Will be explained.
However, FIGS. 5 and 6 are not actual cross-sectional views, but are schematic views showing the second to fourth loose-fitting pairs side by side for easy understanding of the operation. In particular, FIG. 5 shows a case where a load is applied to the external contact surface of the upper absorbent pad 2.
[0034]
First, FIG. 5A shows a state before a lateral load is applied to the vibration proof / impact absorbing pad 1. Then, when a lateral load is applied to the upper absorbent pad 2 and the upper absorbent pad 2 is displaced laterally relative to the lower absorbent pad 3, as shown in FIG. The fourth protrusion 24d that is in contact with the bottom of the first member starts elastic deformation, and with the displacement, the fourth protrusion 24d is deformed so as to be pressed against the side wall of the fourth fitting hole 34d. Increase. At this time, in the other first to third loose-fitting pairs, the protrusion moves in the fitting hole, and among these, the third protrusion 24c first comes into contact with the side wall of the third fitting hole 34c.
[0035]
When the upper absorbent pad 2 is further displaced from this state, as shown in FIG. 5C, the third protrusion 24c abutting on the side wall of the fitting hole 34c starts elastic deformation, and is the same as the previous fourth protrusion. Further, the third protrusion 24c is deformed so as to be pressed against the side wall of the third fitting hole 34c in accordance with the displacement of the upper absorbent pad 2, and the contact area between the two is increased. During this time, the fourth protrusion 24d is pressed against the side wall of the fourth fitting hole 34d and elastically deforms itself, and the side wall of the fitting hole 34d also acts to deform in the direction of expanding the hole.
[0036]
Thereafter, when the upper absorbent pad 2 is further displaced, the second protrusion 24b comes into contact with the side wall of the second fitting hole 34b and the first protrusion 24a continues to be the side wall of the first fitting hole 34a. It operates in the same manner in contact with. Here, the case where a load is applied to the upper absorbent pad 2 has been described, but conversely, the same operation is performed when a load is applied to the lower absorbent pad 3 or both pads 2 and 3.
[0037]
That is, when a lateral load is applied to the vibration proof / impact absorbing pad 1, the two absorbing pads 2, 3 are relatively displaced along the laminated surfaces 22, 32, and the mating is performed as the displacement amount increases. The number of protrusions 24 that are elastically deformed so as to be bent in contact with the side wall of the hole 34 increases stepwise. As a result, the restoring force (repulsive force for preventing displacement) that tries to return to the original state increases at the protrusion 24 and the contact portion of the protrusion 24, and the applied load is rapidly attenuated.
[0038]
Next, FIG. 6A shows a state before a vertical load is applied to the vibration proof / impact absorbing pad 1. Then, when a vertical load is applied to the vibration proof / impact absorbing pad 1 and the upper absorbent pad 2 is displaced in a direction (vertical direction) pressed against the lower absorbent pad 3, from the beginning, as shown in FIG. The fourth protrusion 24d in contact with the bottom of the fourth fitting hole 34d is elastically deformed so as to expand in the lateral direction. At this time, also in the other first to third loose-fitting pairs, the protrusion moves in the fitting hole, and among these, the third protrusion 24c first comes into contact with the bottom of the third fitting hole 34c.
[0039]
When the upper absorbent pad 2 is further displaced from this state, as shown in FIG. 6 (c), the third protrusion 24c contacting the side wall of the fitting hole 34c is also in the horizontal direction, similar to the fourth protrusion 24d. It is elastically deformed so as to expand toward.
Thereafter, when the upper absorbent pad 2 is further displaced, the second protrusion 24b comes into contact with the bottom of the second fitting hole 34b and the first protrusion 24a continues to be the bottom of the first fitting hole 34a. It operates in the same manner in contact with.
[0040]
That is, when a longitudinal load is applied to the vibration-proof / impact absorbing pad 1, the absorbing pads 2 and 3 are relatively displaced in a closer direction, and the fitting hole 34 increases as the displacement amount increases. The number of the protrusions 24 that are elastically deformed so as to be crushed in contact with the bottom of the plate increases stepwise. As a result, the restoring force (repulsive force for preventing deformation) that tries to return to the original shape increases at the protrusion 24 and the contact portion of the protrusion 24, and the applied load is rapidly attenuated.
[0041]
At this time, the protrusion 24 that is pressed against the bottom of the fitting hole 34 and elastically deformed also abuts against the side wall of the fitting hole 34 that is inclined. The contact surface is thus inclined with respect to the direction in which the load is applied (longitudinal direction), and the materials (hardness) of the two absorbent pads 2 and 3 that are in contact are different. The load that reaches the mating external contact surface with respect to the load application side is further attenuated by the transmission direction of the load being dispersed at the contact portion between the two.
[0042]
As described above, in the vibration proof / impact absorbing pad 1 of the present embodiment, the upper absorbent pad 2 and the lower absorbent pad 3 are arranged laterally along the external contact surface or the external contact surface via the external contact surface. Even when a load is applied in any of the longitudinal directions intersecting the surface of the fitting hole 34, the load is applied to the wall surface or bottom of the fitting hole 34 in accordance with the relative displacement of the absorbent pads 2 and 3 based on the applied load. The number of protrusions 24 that contact and elastically deform (and thus the contact area between them) is increased stepwise.
[0043]
Therefore, according to the vibration-proof / impact-absorbing pad of this embodiment, the greater the load, the greater the restoring force (in accordance with the relative displacement between the pads 2 and 3, that is, the applied load). Repulsive force) is generated, so that whatever load is applied, vibrations and impacts that generate the load can be rapidly attenuated and effectively absorbed.
[0044]
Further, in the vibration proof / impact absorbing pad 1 of the present embodiment, since the protrusion 24 and the fitting hole 34 are both formed in a circular cross section, the vibration proof / impact absorbing pad 1 is also resistant to vibration in any direction along the external contact surface. Even vibration absorption characteristics can be obtained.
Furthermore, in the vibration proof / impact absorbing pad 1 of the present embodiment, four types of protrusions 24a to 24d having different diameters and heights are used, and each of the protrusions 24a to 24d has a different natural frequency. Therefore, even if any one of the protrusions 24 resonates, vibrations can be reliably absorbed by the action of the other protrusions 24 without being affected, and vibrations in a wide frequency range can be absorbed.
[0045]
As described above, the vibration-proof / impact-absorbing pad 1 of the present embodiment is not limited to the case where the electronic balance D that needs to block vibration transmitted from the surroundings is installed. When a device that generates vibration is installed, the vibration-proof / impact-absorbing pad 1 is sandwiched between the device and the floor on which the device is placed, and the vibration generated by the device is transmitted to the surroundings. It may be used to prevent this. That is, any place where vibration transmission needs to be prevented may be used.
[0046]
In the present embodiment, only the protrusion 24 is provided on the upper absorbent pad 2 and only the fitting hole 34 is provided on the lower absorbent pad 3, but the protrusion 24 and the fitting hole 34 may be provided on either side. In addition, the protrusion 24 and the fitting hole 34 may be mixed in the same pad.
[0047]
Furthermore, the shape of the protrusion 24 is not limited to a cylindrical shape, and has a protrusion that can make point contact or line contact with other objects such as a polygonal column shape, a hemispherical shape, a pyramid shape, a cone shape, an elliptical cone shape, and a triangular pyramid shape. Any shape is possible as long as it is a thing.
Further, when the upper absorbent pad 2 and the lower absorbent pad 3 are manufactured, a desired filler is appropriately kneaded with the material, for example, thermal conductivity, conductivity, electromagnetic wave absorption, electromagnetic wave shielding, vibration damping properties, for example. Sound absorbing properties, sound insulating properties, heat insulating properties, magnetic properties and the like may be imparted.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which a vibration proof / impact absorbing pad of this embodiment is sandwiched between an electronic balance and a mounting table.
FIG. 2 is a plan view and a cross-sectional view of an upper absorbent pad according to the present embodiment.
FIG. 3 is a plan view and a cross-sectional view of a lower absorbent pad according to the present embodiment.
FIG. 4 is a cross-sectional view of the vibration proof / impact absorbing pad of the present embodiment.
FIG. 5 is a schematic diagram for explaining how the protrusions operate when a roll is applied to the vibration proof / impact absorbing pad of the present embodiment.
FIG. 6 is a schematic diagram for explaining how the protrusions operate when pitching is applied to the vibration proof / impact absorbing pad of the present embodiment.
FIG. 7 is a side view and a schematic view of a conventional vibration-proof pad.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Vibration-proof and shock absorption pad 2 ... Upper absorption pad 3 ... Lower absorption pad 22 ... Laminated surface 26 ... Weir part 24 (24a-24d) ... Protrusion 34 (34a-34d) ... Fitting hole

Claims (4)

板状の弾性部材を複数積層してなる防振・衝撃吸収パッドにおいて、
前記弾性部材の他層との接触面には、積層時に互いに遊嵌し合う突起および嵌合孔からなる複数の遊嵌対が形成され、且つ該遊嵌対は、前記突起と前記嵌合孔の底部或いは側壁との間に形成される間隙の広さの異なるものが複数種類存在すると共に、外部からの荷重の印加時に生じる前記弾性部材間の相対的な変位が大きいほど、前記嵌合孔の壁面と前記突起との接触面積が増大する形状に形成されていることを特徴とする防振・衝撃吸収パッド。
In the vibration-proof and shock-absorbing pad formed by laminating a plurality of plate-like elastic members,
The contact surface with the other layer of the elastic member is formed with a plurality of loosely-fitting pairs each including a protrusion and a fitting hole that are loosely fitted to each other when stacked, and the loosely-fitting pair includes the protrusion and the fitting hole. There are a plurality of types of gaps formed between the bottom part or the side walls of the metal member, and the larger the relative displacement between the elastic members generated when an external load is applied, the larger the fitting hole. A vibration-proof / impact-absorbing pad, characterized in that the contact area between the wall surface and the protrusion is increased.
請求項1記載の防振・衝撃吸収パッドにおいて、
前記遊嵌対は、前記嵌合孔内の壁面と前記突起との間に形成される隙間のうち、前記荷重の印加方向にて両者が対向する部分の間隔が、前記遊嵌対毎にそれぞれ異なる広さ有するよう形成されていることを特徴とする防振・衝撃吸収パッド。
In the vibration-proof and shock-absorbing pad according to claim 1,
In the loose fitting pair, the gap formed between the wall surface in the fitting hole and the protrusion has an interval between the opposing portions in the load application direction for each loose fitting pair. A vibration-proof and shock-absorbing pad characterized by having different widths.
請求項1又は請求項2記載の防振・衝撃吸収パッドにおいて、
前記遊嵌対は、前記嵌合孔内の壁面と前記突起との間に形成される隙間のうち、前記荷重の印加方向にて両者が対向する部分の間隔が、前記突起の根元部分から先端部分にかけて徐々に狭くなる形状に形成されていることを特徴とする防振・衝撃吸収パッド。
In the vibration-proof and shock-absorbing pad according to claim 1 or 2,
The loose fitting pair has a gap formed between a wall surface in the fitting hole and the projection, and an interval between the opposing portions in the load application direction is from the root portion of the projection to the tip. An anti-vibration / impact-absorbing pad characterized by being formed into a shape that gradually narrows over the part.
請求項1ないし請求項3いずれか記載の防振・衝撃吸収パッドにおいて、
前記弾性部材は、隣接する他層とは互いに異なった弾性力を有することを特徴とする防振・衝撃吸収パッド。
In the vibration-proof and shock-absorbing pad according to any one of claims 1 to 3,
The anti-vibration / shock absorbing pad, wherein the elastic member has an elastic force different from that of the adjacent other layer.
JP32683099A 1999-11-17 1999-11-17 Vibration and shock absorbing pads Expired - Fee Related JP3645766B2 (en)

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KR101959210B1 (en) * 2018-01-02 2019-03-18 황두영 Power line tower for anti-vibration

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WO2013143560A1 (en) * 2012-03-29 2013-10-03 Red Bull Gmbh Storage facility for articles having a load state device and a user detection device
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