JP4331389B2

JP4331389B2 - Vibration isolator

Info

Publication number: JP4331389B2
Application number: JP2000244875A
Authority: JP
Inventors: 興三岡本
Original assignee: Tokkyokiki Corp
Current assignee: Tokkyokiki Corp
Priority date: 2000-08-11
Filing date: 2000-08-11
Publication date: 2009-09-16
Anticipated expiration: 2020-08-11
Also published as: JP2002054684A

Description

【０００１】
【発明の属する技術分野】
本発明は、配管の吊り下げ部の防振に適した防振装置に関するものである。
【０００２】
【従来の技術】
工場や家屋において配管を吊り下げて支持する場合、地震の際に配管支持部の破損を防止したり、道路や機械等から配管に伝わる振動や配管内を流れる流体の脈動に起因する配管の振動や、配管のバルブを閉めた際の水撃に起因する振動等が支持体に伝わることを防止するために防振機構を有する配管吊下具が用いられることがある。そのような配管支持具としては図１３に示したようなコイルスプリング(73)を用いた装置がある。
【０００３】
支持体(50)のハンガー部材取付部(51)にはフック状の先端部(72a)を有した略Ｕ字型の支持体側ハンガー部材(72)が取り付けられている。支持体側ハンガー部材(72)はコイルスプリング(73)の支持体(50)側の端部からコイルスプリング(73)の内側を通って、先端部(72a)はコイルスプリング(73)の被支持体(60)側の端部に引っ掛けられている。
【０００４】
又、被支持体(60)のハンガー部材取付部(61)には前記の支持体側ハンガー部材(72)と同じ形状でフック状の先端部(71a)を有した被支持体側ハンガー部材(71)が取り付けられている。被支持体側ハンガー部材(71)はコイルスプリング(73)の被支持体(60)側の端部からコイルスプリング(73)の内側を通って、先端部(71a)はコイルスプリング(73)の支持体(50)側の端部に引っ掛けられている。
【０００５】
被支持体(60)に力が加わって、被支持体(60)が支持体(50)から離れようとすると、被支持体側ハンガー部材(71)の先端部(71a)がコイルスプリング(73)の支持体(50)側の端部を被支持体(60)に引っ張ることとなる。これによりコイルスプリング(73)は被支持体側ハンガー部材(71)の先端部(71a)と支持体側ハンガー部材部材(72)の先端部(72a)との間で押し縮められる。
【０００６】
例えば被支持体が配管である場合、地震があって支持体と被支持体の相対的な位置関係が変化しても、コイルスプリング(73)の伸縮と、吊下具全体の傾きによって両者の位置変化に対応することができるので、配管の支持部が破壊されることが無く、配管を支持し続けることができる。又、配管に外部からの振動が伝わった場合や、配管内を通る流体の脈動により配管に振動が生じた場合でも、配管の振動はコイルスプリング(73)によって吸収され、支持体に伝わる振動を抑制することができる。
【０００７】
しかしながら、緩衝機構としてコイルスプリング(73)を用いる場合、周波数の高い状態で繰り返し荷重を受けると、コイルスプリング(73)の撓み（ピッチ）が一様でなくなり、そのピッチの変化が一端から伝わって他端に達すると折り返すような粗密波（サージ波）を生じさせる。この粗密波の周期と振動周期とが一致するとサージングと呼ばれる共振現象を生じさせるが、サージングにより振動が大きくなり防振性能の低下を引き起こすため好ましくない。
【０００８】
又、コイルスプリング(73)による防振は、コイルスプリング(73)の一方の端に振動が入力され、振動が他端に至る間に吸収されることを前提とするが、支持体側ハンガー部材(72)及び被支持体側ハンガー部材(71)がコイルスプリング(73)の内周側と接触することにより、振動がその接触箇所から異常伝達され、コイルスプリング(73)で十分に減衰されることなく支持体と被支持体の間で伝達されることとなるので好ましくない。
【０００９】
【発明が解決しようとする課題】
そこで、サージングを防止でき、しかもコイルスプリングと他の部材との接触による振動の異常伝達を防止することができる防振装置が求められている。
【００１０】
【課題を解決するための手段】
本発明の請求項１記載の防振装置は、支持体(50)と被支持体(60)との間に配設される防振装置であって、エラストマからなり、支持体(50)側から被支持体(60)側に至る挿通空所(3c)を備えた弾性材(3)と、該弾性材(3)の側周部に配されたコイルスプリング(4)と、支持体(50)のハンガー部材取付部(51)に取り付けられる支持体側係止部(1b)、該支持体側係止部(1b)の両側から同一方向に伸び、前記挿通空所(3c)に挿通される少なくとも２本の支持体側腕部(1c)及び該支持体側腕部(1c)の先端部に形成されて前記弾性材(3)の被支持体側端部(3b)及びコイルスプリング(4)の被支持体側端部(4b)に係止されるフック部(1a)とで構成された支持体側ハンガー部材(1)と、被支持体(60)のハンガー部材取付部(61)に取り付けられる被支持体側係止部(2b)、該被支持体側係止部(2b)の両側から同一方向に伸び、前記支持体側ハンガー部材(1)と接触することなく前記挿通空所(3c)に挿通される少なくとも２本の被支持体側腕部(2c)及び該被支持体側腕部(2c)の先端部に形成されて前記弾性材(3)の支持体側端部(3a)及びコイルスプリング(4)の支持体側端部(4a)に係止されるフック部(2a)とで構成された被支持体側ハンガー部材(2)とを備えたことを特徴とする。
【００１１】
これによれば支持体側ハンガー部材(1)と被支持体側ハンガー部材(2)との間で伝達される振動はコイルスプリング(4)と弾性材(3)により吸収され、相手側に伝わりにくくなる。そして、コイルスプリング(4)の内側に配されたエラストマからなる弾性材(3)が制振機構（ダンパー）として働き、コイルスプリング(4)のサージングを除去することができ防振効果が高くなる。
【００１２】
又、支持体側ハンガー部材(1)の腕部(1c)及び被支持体側ハンガー部材(2)の腕部(2c)とコイルスプリング(4)の間には弾性材(3)が位置するので、コイルスプリング(4)は端部(4a)，(4b)以外では支持体側ハンガー部材(1)及び被支持体側ハンガー部材(2)とは接触しない。そのため、コイルスプリング(4)の端部以外の箇所から振動が異常伝達されることが無く防振効果が高くなる。支持体側ハンガー部材(1)と被支持体側ハンガー部材(2)は直接接触しないので、一方から振動が他方に直接伝達されることはなく、コイルスプリング(4)と弾性材(3)により効果的に減衰される。
【００１３】
請求項２記載の防振装置は請求項１の防振装置において、弾性材(3)の挿通空所(3c)は２本のスロット状通孔が交差してなる通孔であり、支持体側ハンガー部材(1)の支持体側腕部(1c)は一方のスロット状通孔の両端部付近を挿通し、被支持体側ハンガー部材(2)の被支持体側腕部(2c)は他方のスロット状通孔の両端部付近を挿通することを特徴とする。
【００１４】
これによれば、支持体側ハンガー部材(1)の支持体側腕部(1c)と被支持体側ハンガー部材(2)の被支持体側腕部(2c)が互いに交差する別のスロット状通孔に挿通されることとなるので、両者が接触することを防止することができる。又、支持体側腕部(1c)と被支持体側腕部(2c)は弾性材(3)の縁に最も近いスロット状通孔の両端部(1d)付近を挿通するので、その先端のフック部(1a)，(2a)を弾性材(3)とコイルスプリング(4)の端部に引っ掛けることができる。
【００１５】
請求項３記載の防振装置は、支持体(50)と被支持体(60)との間に配設される防振装置であってエラストマからなり、支持体(50)側から被支持体(60)側に至る挿通空所(30a)を備えた筒状の弾性材(30)と、該弾性材(30)の支持体側端部と被支持体側端部に配され、表裏に挿通する端部挿通部(41)を備えた端面当接板(40)，(141)と、支持体(50)のハンガー部材取付部(51)に取り付けられる支持体側係止部(1b)と、該支持体側係止部(1b)の両側から同一方向に伸び、支持体(50)側の端面当接板の端部挿通部(41)、弾性材(30)の挿通空所(30a)及び被支持体(60)側の端面当接板(140)の端部挿通部(141)を、前記支持体(60)側の端面当接板(140)と接触することなく挿通する少なくとも２本の支持体側腕部(1c)と、該支持体側腕部(1c)の先端部に形成されて前記被支持体(60)側の端面当接板(140)に係止されるフック部(1a)とで構成された支持体側ハンガー部材(1)と、被支持体(60)のハンガー部材取付部(61)に取り付けられる被支持体側係止部(2b)と、該被支持体側係止部(2b)の両側から同一方向に伸び、被支持体(60)側の端面当接板(140)の端部挿通部(141)、弾性材(30)の挿通空所(30a)及び支持体側の端面当接板(40)の端部挿通部(41)を、前記被支持体(50)側の端面当接板(40)及び前記支持体側ハンガー部材(1)と接触することなく挿通する少なくとも２本の被支持体側腕部(2c)と、該被支持体側腕部(2c)の先端部に形成されて前記支持体(50)側の端面当接板(40)に係止されるフック部(2a)とで構成された被支持体側ハンガー部材(2)とを備えたことを特徴とする。
【００１６】
これによれば、弾性材(30)により支持体側ハンガー部材(1)と被支持体側ハンガー部材(2)との間で伝達される振動を減衰させることができる。
弾性材(30)自体に複雑な形状の挿通空所(30a)を設けなくても、弾性材(30)の両端部に端面当接板(40)，(140)を配し、ここに各ハンガー部材(1)，(2)の腕部(1c)，(2c)の位置ガイドとなる適当な端部挿通部(41)，(141)を設けることにより腕部(1c)，(2c)の位置を定めることができる。又、コイルスプリングを有していなくても各ハンガー部材(1)，(2)のフック部(1a)，(2a)を硬質の端面当接板(40)，(140)に引っ掛けることができるので、フック部(1a)，(2a)で弾性材を傷つけることがない。
【００１７】
請求項４記載の防振装置は請求項３の防振装置において、端面当接板(40)，(140)の端部挿通部(41)，(141)は係止用スロット状通孔(41a)，(141a)と、該係止用スロット状通孔(41a)，(141a)と交差し該係止用スロット状通孔(41a)，(141a)より幅の広い通過用スロット状通孔(41b)，(141b)とからなり、支持体側腕部(1c)は支持体側の端面当接板(40)の通過用スロット状通孔(41b)を挿通し、支持体側ハンガー部材(1)のフック部(1a)は被支持体側の端面当接板(140)の係止用スロット状通孔(141a)付近の縁に係止され、被支持体側腕部(2c)は被支持体側の端面当接板(140)の通過用スロット状通孔(141b)を挿通し、被支持体側ハンガー部材(2)のフック部(2a)は支持体側の端面当接板(40)の係止用スロット状通孔付近(41b)の縁に係止されていることを特徴とする。
【００１８】
これによれば端面当接板(40)，(140)の通過用スロット状通孔(41b)，(141b)は幅が広いので、支持体側ハンガー部材(1)の支持体側腕部(1c)は支持体側の端面当接板(40)と接触せず、被支持体側ハンガー部材(2)の支持体側腕部(2c)は被支持体側の端面当接板(140)と接触しない。そのため１つの端面当接板に両方のハンガー部材(1)，(2)が接触することはなく、端面当接板(40)，(140)を介して支持体側ハンガー部材(1)と被支持体側ハンガー部材(2)との間で振動が伝達されることを防止することができる。
【００１９】
請求項５記載の防振装置は請求項３又は請求項４記載の防振装置において、弾性材(31)の中にはコイルスプリング(32)が埋め込まれていることを特徴とする。
【００２０】
これによれば、弾性材(31)と、その内部に埋め込まれたコイルスプリング(32)の両方による防振効果を同時に得ることができるので防振効果が大きい。
【００２１】
請求項６記載の防振装置は請求項１〜請求項５のいずれかに記載の防振装置において、弾性材(3)の材料となるエラストマとしてフッ素ゴム又はエチレンプロピレンジエン三元共重合体（ＥＰＤＭ）を用いたことを特徴とする
フッ素ゴムやＥＰＤＭは、圧迫や摩耗により表面が削れにくく、削り屑の飛散及びアウトガスの発生が少なく、空気環境の汚れを生じさせにくいので、半導体，液晶パネル等の製造に用いられるクリーンルームで使用するのに適する。
【００２２】
【発明の実施の形態】
以下、本発明を好適な実施例を用いて説明する。
【００２３】
［実施例１］
図１は本実施例の正面図であり、図２は斜視図である。図３は本実施例に用いたハンガー部材(1)を示した図であり、金属線材を略Ｕ字型に曲げ加工し、その両端部を曲げてフック部(11a)が形成されている。ハンガー部材(1)の中央部付近の曲部は支持体(50)に設けられたリング、シャックル等のハンガー部材取付部(51)に係止するための支持体側係止部(1b)となっている。支持体側係止部(1b)の両側には同一方向に伸びる２本の支持体側腕部(1c)を有しており、その先端部には外側に開いたフック部(1a)が形成されている。
【００２４】
被支持体側ハンガー部材(2)も支持体側ハンガー部材(1)と同じ形状であり、被支持体側係止部(2b)と、その両側の被支持体側腕部(2c)と、被支持体側腕部(2c)の先端部において外側に開いたフック部(2a)を有し、被支持体側係止部(2b)が被支持体(60)に設けられたハンガー部材取付部(61)に係止される。
【００２５】
支持体側ハンガー部材(1)と被支持体側ハンガー部材(2)は、フック部(1a)，(2a)と係止部(1b)，(2b)を有しておれば、細かな形状や製造方法は限定されるものではない。図４と図５に他のハンガー部材の例を示す。
【００２６】
図４に示すハンガー部材(12)は金属板を打ち抜いて加工したものである。両端部のフック部(12a)はハンガー部材打ち抜き加工時にその形に打ち抜いたものであってもよい、打ち抜き後に曲げ加工して形成したものであっても良い。又、係止部は係止用通孔(12b)を打ち抜き、又は穿孔することにより形成させている。
【００２７】
図５に示すハンガー部材(13)は複数の部材から形成されている。金属製のハンガー部材基部(14)の中心部には内周面に支持体又は被支持体に接続されたボルト(18)を取り付けるためのネジが切られたボルト取付孔(14a)を有している。又、ハンガー部材基部(14)の両側部には腕部材取付溝(14b)が設けられており、この腕部材取付溝(14b)には先端部にフック部(15a)が形成された腕部材(15)が蝋付け，溶接等により取り付けられている。(16)はボルト(18)に対してハンガー部材基部(14)が移動しないように固定するナットであり、(17)はハンガー部材基部(14)とナット(16)との間に配されたスプリングワッシャである。(3)はゴム、弾性を有した樹脂等のエラストマからなる円筒状の弾性部材である。
【００２８】
図６は弾性部材(3)を示した図である。弾性部材(3)は、その支持体(50)側の端面(3a)から被支持体(60)側の端面(3b)に至る挿通空所(3c)を有している。本実施例における挿通空所(3c)は２つのスロット状の通孔が交差することにより断面が略十字型となっている。スロット状通孔の幅は支持体側ハンガー部材(1)と被支持体側ハンガー部材(2)の腕部(1c)，(2c)の厚み（ハンガー部材が金属線材からなる場合は金属線材の直径）と略同じ程度である。２本のスロット状通孔の交差角度は本実施例では９０°としたが、他の角度としても良い。(3d)は挿通空所(3c)の交差するスロット状通孔の端部であり、挿通空所(3c)の中で最も弾性部材(3)の外周に近い部分である。
【００２９】
本実施例では弾性材(3)の材料として天然ゴムを用いたが、特にこれに限定されるものではなく、各種ゴムや弾性を有する樹脂等のエラストマが利用でき、例えば半導体や液晶パネル等の製造のためのクリーンルームで使うような場合は、圧迫や摩耗により弾性体表面が削れにくく、削り屑の飛散による汚れを生じさせにくく、更にアウトガスの発生による空気環境の汚染を生じさせにくいフッ素ゴム（分子中にフッ素原子を含むゴム状共重合体）やＥＰＤＭ（エチレンプロピレンジエン三元共重合体）等を使用することができる。
【００３０】
(4)は弾性材(3)の周囲に配されたコイルスプリングであり、その内径は弾性材(3)の外形と同程度である。(4a)はコイルスプリング(4)の支持体(50)側の端部であり、(4b)は被支持体(60)側の端部である。
【００３１】
支持体側ハンガー部材(1)は両端のフック部(1a)がコイルスプリング(4)の被支持体(60)側端部(4b)に引っ掛けられている。そして支持体側ハンガー部材(1)は弾性材(3)の挿通空所(3c)を通って、支持体側係止部(1b)を含む部分が弾性体(3)の支持体側端面(3a)より突出する。支持体側ハンガー部材(1)は２本の支持体側腕部(1c)は挿通空所(3c)内を通る際には、十字方向の対向する先端部(3d)に接触又は近接する。
【００３２】
被支持体側ハンガー部材(2)は支持体側ハンガー部材(1)とは反対方向に取り付けられており、フック部(2a)がコイルスプリング(4)の支持体(50)側端部(4a)に引っかけられている。そして弾性材(3)の挿通空所(3c)を通って、被支持体側係止部(2b)を含む部分が弾性体(3)の被支持体側端面(3b)より突出する。被支持体側ハンガー部材(2)の２本の被支持体側腕部(2c)は挿通空所(3c)を通る際に、支持体側ハンガー部材(1)は腕部(1c)が挿通されているスロット状通孔と交差する別のスロット状通孔に挿通される。従って、支持体側ハンガー部材(1)は被支持体側ハンガー部材(2)とは９０°ずれて配されることとなり、両者は接触しない。
【００３３】
被支持体(60)又は支持体(50)が振動した場合、伸縮するコイルスプリング(4)と弾性材(3)により振動のエネルギーが吸収されると共に、弾性材(3)によりサージングが除去される。従って、被支持体(60)と支持体(50)との間で振動が吸収され、両者間での振動の伝達が少なくなる。従って、配管を流れる流体の脈動や、配管のバルブを閉めた際の水撃等に起因する配管の振動が支持体に伝わることを有効に防止することができる。
【００３４】
又、支持体側ハンガー部材(1)は被支持体側ハンガー部材(2)は、コイルスプリング(4)とは先端のフック部(1a)，(2a)以外では接触していない。そのため、コイルスプリング(4)が端部 (4a)，(4b) 以外で両ハンガー部材(1)，(2)と接触することに起因する振動の異常伝達を防止することができる。
【００３５】
尚、本実施例では断面が略十字型の挿通空所(3c)を用いた弾性材(3)を用いたが、弾性材(3)の形状はこれに限定されるものではない。例えばハンガー部材(1)，(2)の腕部(1c)，(2c)を挿通させるための貫通孔を独立して複数設けてもよい。又、図７は弾性材の他の例の端面図であり、このように弾性材(130)の外周部に挿通空所としてハンガー部材(1)，(2)の腕部(1c)，(2c)を嵌め入れる溝部(130a)を設けても良い。
【００３６】
［実施例２］
図８は本実施例を説明する図である。基本構成は実施例１と同様であるが、ハンガー部材として上述した図５記載のハンガー部材を用い、防振装置の張力調整を可能とした点が異なる。
【００３７】
支持体側ハンガー部材(13)の構成は図５を用いて上記で説明した通りである。被支持体側ハンガー部材(23)も基本構成は支持体側ハンガー部材(13)同様であるが、被支持体側ハンガー部材(23)のボルト(28)は、支持体側ハンガー部材(13)のボルト(18)とは逆にネジが切られている。
【００３８】
それに対応して被支持体側ハンガー部材(23)のハンガー部材基部(24)のボルト取付孔(24a)内周面には、支持体側ハンガー部材(13)のハンガー部材基部(14)のボルト取付孔(14a)内周面とは逆向けにネジが切られている。被支持体側ハンガー部材(23)のナット(26)も支持体側ハンガー部材(13)のナット(16)とは逆ネジになっている。それ以外は実施例１と同様である。
【００３９】
支持体の位置と被支持体の位置が固定されている場合、防振装置を持って回転させることにより防振装置の張力を変更することができる。例えば防振装置を支持体側から見て時計回りに回すと、支持体側ハンガー部材(13)はネジに沿って回転しつつ被支持体側に移動する。一方、被支持体側ハンガー部材(23)は回転しつつ支持体側に移動する。
【００４０】
これにより、支持体側ハンガー部材(13)と被支持体側ハンガー部材(23)が接近し、支持体側ハンガー部材(13)の腕部材(15)先端のフック部(15a)と、被支持体側ハンガー部材(23)の腕部材(25)先端のフック部(25a)との間隔は広くなる。弾性材(3)とコイルスプリング(4)は支持体側ハンガー部材(13)のフック部(15a)と被被支持体側ハンガー部材(23)のフック部(25a)とから押し縮める方向に力を受けているが、フック部(15a)とフック部(25a)との距離が離れることにより弾性材(3)とコイルスプリング(4)の長さは長くなり、張力は小さくなる。
【００４１】
反対に、防振装置を支持体側から見て反時計回りに回すと、支持体側ハンガー部材(13)はネジに沿って回転しつつ支持体側に移動し、被支持体側ハンガー部材(23)は回転しつつ被支持体側に移動する。これにより、支持体側ハンガー部材(13)の腕部材(15)先端のフック部(15a)と、被支持体側ハンガー部材(23)の腕部材(25)先端のフック部(25a)との間隔は狭くなり、弾性材(3)とコイルスプリング(4)は圧縮されて短くなり、張力は大きくなる。
【００４２】
このように弾性材(3)とコイルスプリング(4)の張力を調整することにより、減衰効果や衝撃緩和等の防振効果を調節することができる。以上は支持体と被支持体の位置が固定されている場合であるが、例えば被支持体が位置が固定されていないような場合には、防振装置を回して弾性材(3)とコイルスプリング(4)の長さを調整することにより支持体と被支持体との距離の微調整として用いることもできる。
【００４３】
［実施例３］
図９は本実施例を説明する図である。本実施例も支持体側のハンガー部材と被支持体側のハンガー部材の間に弾性材を配している点は実施例１と同様であるが、弾性材(30)の構成が異なる。尚、図９では見やすいように支持体側ハンガー部材(1)は図示していないが、実施例１と同様に弾性材(30)に被支持体ハンガー部材(2)と逆向きに配される。
【００４４】
(30)はゴムや弾性を有する樹脂等のエラストマからなる円筒状の弾性材であり、中央に両端面間を貫通する円柱状の挿通空所(30a)を有している。弾性材(30)の周囲には実施例１と異なりコイルスプリングは配されていない。
【００４５】
弾性材(30)の支持体側の端面には金属製又は硬質合成樹脂製の端面当接板(40)が配されており、被支持体側の端面にも端面当接板(140)が配されている。支持体側の端面当接板(40)と被支持体側の端面当接板(140)は同じ材質、同じ形状の同じ部材であり、取り付けられている箇所が異なるだけである。端面当接板(40)，(140)は径が弾性材(30)の径と略等しい円盤状で、表裏面間を貫通する十字型の端部挿通部(41)，(141)が設けられている。
【００４６】
端部挿通部(41) ，(141)はスロット状通孔が十字型に交差した形状となっているが、一方の通孔は幅が狭い係止用スロット状通孔(41a)，(141a)であり、他方の通孔は幅が広い通過用スロット状通孔(41b) ，(141b)となっている。
【００４７】
弾性材(30)の支持体側端面に配される端面当接板(40)と、被支持体側端面に配される端面当接板(140)とでは十字型の端部挿通部(41)，(141)の向きが９０°ずれて配されている。すなわち、挿通空所(30a)を介して一方の端面当接板(40)の係止用通孔(41a)と他方の端面当接板(140)の通過用通孔(141b)が対向することになる。
【００４８】
被支持体側ハンガー部材(2)は先端のフック部(2a)が支持体側に取り付けられた端面当接板(40)の係止用スロット状通孔(41a)付近の縁に引っかけられ、弾性材(30)の挿通空所(30a)の内側を通って、被支持体側に配された端面当接板(140)の通過用スロット状通孔(141b)を通って被支持体側係止部(2b)が被支持体側の端面当接板(40)から突出する。通過用スロット状通孔(141b)は幅が広いので被支持体側ハンガー部材(2)の被支持体側腕部(2c)は被支持体側の端面当接板(140)とは接触しない。
【００４９】
図示していないが、支持体側ハンガー部材も向きは逆になるが同様に取り付けられる。すなわち、フック部が被支持体側の端面当接板(140)の係止用スロット状通孔(141a)付近の縁に引っかけられ、挿通空所(30a)の内側を通って、被支持体側の端面当接板(40)の通過用スロット状通孔(41b)を通って係止部が被支持体側の端面当接板(40)から突出する。通過用スロット状通孔(41b)は幅が広いので支持体側ハンガー部材の支持体側腕部は支持体側の端面当接板(40)とは接触しない。
【００５０】
このように端面当接板(40)の十字型に交差する端部挿通部(41)の幅を変えて一方を幅の狭い係止用スロット状通孔(41a)とし、これと交差する他方を幅の広い通過用スロット状通孔(41b)としたのは、金属製の端面当接板(40)を通ってハンガー部材相互間で直接に振動が伝達されることを防止するためである。
【００５１】
被支持体側ハンガー部材(2)と支持体側ハンガー部材(1)とが同じ端面当接板(40)に接することがないので、端面当接板(40)を通って減衰されない振動が直接ハンガー部材間でが伝達されることがく、一方（例えば被支持体側）の振動は必ず弾性材(30)を通って減衰された上で他方（例えば支持体側）に伝達されるので、防振効果が大きい。
【００５２】
本実施例では弾性材(30)自体は単純な円筒状でよいので、汎用のゴムパイプを利用することができ、製造が容易である。又、弾性材(30)の端部には端面当接板(40)，(140)が配されており、ハンガー部材(1)，(2)のフック部は(1a)，(2a)は端面当接板(40)，(140)に引っかけられることとなるので、弾性材(30)がフック部は(1a)，(2a)により押圧されて傷つくことを防止することができる。
【００５３】
尚、本実施例では十字型の端部挿通部(41)を有した円盤状の端面当接板(40)を使用したが、端面当接板の形状はこれに限定されるものではなく、他の形状でも良い。端部挿通部は実施例では十字型の貫通孔としたが、外周部に端部挿通部の外周部に設けた溝部と組み合わせても良い。図１１と図１２にそのような端部挿通部を有した端部挿通部の例を示す。
【００５４】
図１１は溝部を有した端面当接板を示した図（(A)は平面が、(B)は中央断面）であり、この端面当接板(240)は長穴状の貫通孔(241)と、外周部に設けられた溝部(242)を有している。使用に際しては外周部に設けられた溝部(242)ハンガー部材の腕部を通すようにし、長穴状の貫通孔(241)と端面当接板(240)の外縁との間にフック部を係止させる。又、この端面当接板(240)は周囲に縁部(243)を有しており、縁部(243)の内周面が弾性材(30)の端部外周部と接するように（被せるように）取り付けられる。
【００５５】
又、図１２は端面当接板の更に別の例を示した図（(A)は平面が、(B)は中央断面）であり、この端面当接板(340)も長穴状の貫通孔(341)と、外周部に設けられた溝部(342)を有している。外周部に設けられた溝部(342)は弾性材(30)側の中心部に向かうほど深くなるように形成されている。但し、図１１に示したものと異なり、径が細くなっている部分(343)を有し、この部分を弾性材(30)の端部内周部に嵌め入れるようにして取り付けられる。
【００５６】
［実施例４］
本実施例は基本構成は実施例３と同じであるが、弾性材(31)のみが異なる。図１０は本実施例で用いた弾性材(31)を示した図である。
【００５７】
本実施例の弾性材(31)の外観形状は実施例３の弾性材(30)と同じであり、円筒状で中央に挿通空所(31a)を有している。但し、弾性材(31)を構成するエラストマの中にコイルスプリング(32)が埋め込まれている点が異なる。
【００５８】
弾性材(31)をこのような構成とすることにより、弾性材(31)が伸縮する際にエラストマとコイルスプリング(32)による防振効果を同時に得ることができ、防振効果が更に高くなる。その他の構成や効果は実施例３と同様である。
【００５９】
【発明の効果】
以上述べたように本発明により、エラストマからなる弾性材によりコイルスプリングのサージングを吸収して防振効果の低下を防止することができ、コイルスプリングと支持体又は被支持体に接続されているハンガー部材とのコイルスプリング端部以外での接触を防止し、接触部からコイルスプリングへの振動の異常伝達を防止することができる。これにより、防振効果の高い防振装置を提供することができる。
【図面の簡単な説明】
【図１】実施例１の正面図。
【図２】実施例１の斜視図。
【図３】実施例１で用いたハンガー部材を示した図。
【図４】ハンガー部材の他の一例を示した図。
【図５】ハンガー部材の更に他の一例を示した図。
【図６】エラストマ製の弾性材を示した図。
【図７】弾性材の他の一例の端面図。
【図８】実施例２の張力調整を説明する図。
【図９】実施例３を説明する図。
【図１０】実施例４に用いる弾性材を示した図。
【図１１】端面当接板の他の例を示した図。
【図１２】端面当接板の更に他の例を示した図。
【図１３】配管吊下具（従来例）を示した図。
【符号の説明】
(1) 支持体側ハンガー部材(1)は
(1a) フック部
(1b) （支持体側）係止部
(1c) （支持体側）腕部
(2) 被支持体側ハンガー部材
(2a) フック部
(2b) （被支持体側）係止部
(2c) （被支持体側）腕部
(3) 弾性材
(3a) 支持体側端面
(3b) 被支持体側端面
(3c) 挿通空所
(4) コイルスプリング
(4a) 支持体側端部
(4b) 被支持体側端部
(30) 弾性材
(40)，(140) 端面当接板
(50) 支持体
(60) 被支持体[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vibration isolator suitable for vibration isolation of a hanging part of a pipe.
[0002]
[Prior art]
When supporting pipes by suspending them in factories or houses, the pipe support part is prevented from being damaged during an earthquake, or vibrations transmitted from the road or machine to the pipes or from the pulsation of the fluid flowing in the pipes. In addition, a pipe suspension having a vibration isolation mechanism may be used in order to prevent vibration or the like due to water hammer when the pipe valve is closed from being transmitted to the support. As such a pipe support, there is an apparatus using a coil spring (73) as shown in FIG.
[0003]
A substantially U-shaped support-side hanger member (72) having a hook-shaped tip (72a) is attached to the hanger member attaching portion (51) of the support (50). The support-side hanger member (72) passes from the end of the coil spring (73) on the support (50) side to the inside of the coil spring (73), and the tip (72a) is a supported body of the coil spring (73). It is hooked to the end on the (60) side.
[0004]
Further, the hanger member mounting portion (61) of the supported body (60) has the same shape as the above-mentioned support-side hanger member (72) and has a hook-shaped tip portion (71a), and the supported-body side hanger member (71). Is attached. The supported hanger member (71) passes from the end of the coil spring (73) on the supported body (60) side through the inside of the coil spring (73), and the tip (71a) supports the coil spring (73). It is hooked on the end of the body (50) side.
[0005]
When force is applied to the supported body (60) and the supported body (60) tries to move away from the supported body (50), the tip end portion (71a) of the supported-body-side hanger member (71) becomes a coil spring (73). The end of the support (50) side is pulled to the supported body (60). Thus, the coil spring (73) is compressed between the tip end portion (71a) of the supported-body-side hanger member (71) and the tip portion (72a) of the support-side hanger member member (72).
[0006]
For example, if the supported body is a pipe, even if there is an earthquake and the relative positional relationship between the supported body and the supported body changes, both of them will be affected by the expansion and contraction of the coil spring (73) and the inclination of the entire suspension. Since it can respond to a change in position, the support portion of the pipe is not broken and the pipe can be supported continuously. Even when vibration from the outside is transmitted to the pipe or when vibration is generated in the pipe due to pulsation of the fluid passing through the pipe, the vibration of the pipe is absorbed by the coil spring (73), and the vibration transmitted to the support is not affected. Can be suppressed.
[0007]
However, when the coil spring (73) is used as a buffer mechanism, if the load is repeatedly applied at a high frequency, the deflection (pitch) of the coil spring (73) is not uniform, and the change in pitch is transmitted from one end. When the other end is reached, a close-packed wave (surge wave) is generated. If the period of the dense wave and the vibration period coincide with each other, a resonance phenomenon called surging occurs, but this is not preferable because vibration increases due to surging and the vibration-proof performance is lowered.
[0008]
In addition, vibration isolation by the coil spring (73) is based on the premise that vibration is input to one end of the coil spring (73) and absorbed while reaching the other end. 72) and the supported hanger member (71) are in contact with the inner peripheral side of the coil spring (73), so that vibration is abnormally transmitted from the contact point and is not sufficiently attenuated by the coil spring (73). Since it will be transmitted between a support body and a to-be-supported body, it is not preferable.
[0009]
[Problems to be solved by the invention]
Therefore, a vibration isolator capable of preventing surging and preventing abnormal transmission of vibration due to contact between the coil spring and another member is required.
[0010]
[Means for Solving the Problems]
The vibration isolator according to claim 1 of the present invention is an anti-vibration device disposed between the support (50) and the supported body (60), which is made of an elastomer and is on the support (50) side. Elastic member (3) provided with an insertion space (3c) extending from the support member (60) side to the supported member (60), a coil spring (4) disposed on the side periphery of the elastic member (3), and a support member ( 50) the support-side locking portion (1b) attached to the hanger member mounting portion (51), extends in the same direction from both sides of the support-side locking portion (1b), and is inserted into the insertion space (3c). At least two support side arms (1c) and a support side end (3b) of the elastic material (3) and a coil spring (4) A support-side hanger member (1) composed of a hook part (1a) locked to the support-side end (4b) and a supported part attached to the hanger member attaching part (61) of the supported object (60) Body side locking part (2b), either side of the supported body side locking part (2b) Extending in the same direction and inserted into the insertion space (3c) without contacting the support-side hanger member (1) and at least two supported-side arm portions (2c) and the supported-side arm portions ( 2c) and formed of a hook portion (2a) formed on the support side end portion (3a) of the elastic material (3) and locked to the support side end portion (4a) of the coil spring (4). The supported hanger member (2) is provided.
[0011]
According to this, the vibration transmitted between the support-side hanger member (1) and the supported-side hanger member (2) is absorbed by the coil spring (4) and the elastic material (3), and is not easily transmitted to the other side. . The elastic material (3) made of an elastomer disposed inside the coil spring (4) works as a vibration damping mechanism (damper), so that surging of the coil spring (4) can be removed and the vibration isolation effect is enhanced. .
[0012]
In addition, since the elastic material (3) is located between the arm portion (1c) of the support-side hanger member (1) and the arm portion (2c) of the supported-side hanger member (2) and the coil spring (4), The coil spring (4) does not contact the support side hanger member (1) and the supported side hanger member (2) except at the end portions (4a) and (4b). Therefore, vibration is not abnormally transmitted from locations other than the end of the coil spring (4), and the vibration isolation effect is enhanced. Since the support-side hanger member (1) and the supported-side hanger member (2) are not in direct contact with each other, vibration is not directly transmitted from one to the other, which is more effective by the coil spring (4) and the elastic material (3). Is attenuated.
[0013]
The anti-vibration device according to claim 2 is the anti-vibration device according to claim 1, wherein the insertion space (3c) of the elastic member (3) is a through-hole formed by intersecting two slot-shaped through-holes. The support-side arm portion (1c) of the hanger member (1) is inserted near both ends of one slot-shaped through hole, and the supported-side arm portion (2c) of the supported-side hanger member (2) is the other slot-like shape. It is characterized by being inserted near both end portions of the through hole.
[0014]
According to this, the support side arm portion (1c) of the support side hanger member (1) and the supported side arm portion (2c) of the supported side hanger member (2) are inserted into different slot-shaped through holes that intersect each other. Therefore, both can be prevented from contacting each other. Also, the support side arm (1c) and the supported side arm (2c) are inserted near the both ends (1d) of the slot-shaped through hole closest to the edge of the elastic material (3), so that the hook portion at the tip thereof (1a) and (2a) can be hooked on the ends of the elastic material (3) and the coil spring (4).
[0015]
The vibration isolator according to claim 3 is an anti-vibration device disposed between the support (50) and the supported body (60), and is made of an elastomer, and is supported from the support (50) side. A cylindrical elastic material (30) provided with an insertion space (30a) leading to the (60) side, and the elastic material (30) is arranged at the support side end and the supported side end and is inserted through the front and back sides. End surface abutting plates (40), (141) having an end insertion portion (41), a support side locking portion (1b) attached to the hanger member attaching portion (51) of the support (50), Extending in the same direction from both sides of the support-side locking portion (1b), the end insertion portion (41) of the end surface contact plate on the support (50) side, the insertion space (30a) of the elastic material (30), and the cover At least two insertion portions (141) of the end surface contact plate (140) on the support (60) side are inserted without contacting the end surface contact plate (140) on the support (60) side. A support-side arm (1c) and a tip of the support-side arm (1c) are formed on the end surface contact plate (140) on the supported body (60) side. A support-side hanger member (1) composed of a hook portion (1a) to be locked, and a supported-side lock portion (2b) attached to the hanger member mounting portion (61) of the supported body (60). Extending from both sides of the supported-body-side locking portion (2b) in the same direction, the end-insertion portion (141) of the end-face contact plate (140) on the supported-body (60) side, and the insertion of the elastic material (30) The end portion insertion portion (41) of the space (30a) and the end surface contact plate (40) on the support body side, the end surface contact plate (40) on the supported body (50) side and the support body side hanger member (1 ) At least two supported body side arm portions (2c) that are inserted without contacting each other, and an end surface abutting plate formed on the distal end portion of the supported body side arm portion (2c). And a supported hanger member (2) constituted by a hook portion (2a) locked to (40).
[0016]
According to this, the vibration transmitted between the support side hanger member (1) and the supported side hanger member (2) can be attenuated by the elastic material (30).
Even if the elastic material (30) itself does not have an insertion space (30a) having a complicated shape, end face contact plates (40) and (140) are arranged at both ends of the elastic material (30), and Arm portions (1c), (2c) by providing appropriate end insertion portions (41), (141) that serve as position guides for the arm portions (1c), (2c) of the hanger members (1), (2) The position of can be determined. Even without a coil spring, the hooks (1a) and (2a) of the hanger members (1) and (2) can be hooked on the hard end face contact plates (40) and (140). Therefore, the elastic material is not damaged by the hook portions (1a) and (2a).
[0017]
The vibration isolator according to claim 4 is the vibration isolator according to claim 3, wherein the end insertion portions (41), (141) of the end surface abutting plates (40), (140) are slot-shaped through holes ( 41a), (141a) and the slot-like through holes (41a), (141a) for locking, passing through the slot-like through holes (41a), (141a) wider than the slot-like through holes for locking. The support side arm portion (1c) is inserted through the passage slot-like through hole (41b) of the end face contact plate (40) on the support side, and the support side hanger member (1b) is formed of holes (41b) and (141b). ) Hook part (1a) is locked to the edge of the end surface contact plate (140) on the supported body side in the vicinity of the locking slot-shaped through hole (141a), and the supported body side arm section (2c) is on the supported body side The end surface abutment plate (140) is inserted into the passage slot-shaped through hole (141b), and the hook portion (2a) of the supported-side hanger member (2) is engaged with the support-side end surface abutment plate (40). It is characterized by being locked to the edge in the vicinity of the slot-shaped through hole (41b).
[0018]
According to this, since the slot-like through holes (41b), (141b) for passage of the end surface contact plates (40), (140) are wide, the support-side arm portion (1c) of the support-side hanger member (1) Does not come into contact with the end surface contact plate (40) on the support side, and the support side arm portion (2c) of the supported side hanger member (2) does not come into contact with the end surface contact plate (140) on the supported side. Therefore, both hanger members (1) and (2) do not come into contact with one end surface abutment plate, and the support side hanger member (1) and supported are supported via the end surface abutment plates (40) and (140). It is possible to prevent vibration from being transmitted to the body side hanger member (2).
[0019]
The vibration isolator according to claim 5 is the vibration isolator according to claim 3 or 4, characterized in that a coil spring (32) is embedded in the elastic material (31).
[0020]
According to this, since the vibration isolation effect by both the elastic material (31) and the coil spring (32) embedded therein can be obtained simultaneously, the vibration isolation effect is great.
[0021]
The vibration isolator according to claim 6 is the vibration isolator according to any one of claims 1 to 5, wherein the elastomer used as the material of the elastic material (3) is fluoro rubber or ethylene propylene diene terpolymer ( EPDM) is used
Fluoro-rubber and EPDM are difficult to scrape due to pressure and wear, less swarf and outgas generation, and less likely to cause air pollution, so they are used in clean rooms used for manufacturing semiconductors, liquid crystal panels, etc. Suitable for
[0022]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to preferred embodiments.
[0023]
[Example 1]
FIG. 1 is a front view of the present embodiment, and FIG. 2 is a perspective view. FIG. 3 is a view showing the hanger member (1) used in the present embodiment, in which a metal wire is bent into a substantially U shape, and both ends thereof are bent to form hook portions (11a). The curved portion near the center of the hanger member (1) becomes a support side locking portion (1b) for locking to a hanger member mounting portion (51) such as a ring or shackle provided on the support (50). ing. There are two support-side arm portions (1c) extending in the same direction on both sides of the support-side locking portion (1b), and a hook portion (1a) opened outward is formed at the tip of the support-side locking portion (1b). Yes.
[0024]
The supported-side hanger member (2) has the same shape as the supported-side hanger member (1), the supported-side locking portion (2b), the supported-side arm portions (2c) on both sides, and the supported-side arm A hook part (2a) that opens outward at the tip of the part (2c), and the supported-body-side locking part (2b) is engaged with a hanger member mounting part (61) provided on the supported body (60). Stopped.
[0025]
If the support-side hanger member (1) and the supported-side hanger member (2) have the hook portions (1a), (2a) and the locking portions (1b), (2b), they can be made in a fine shape or manufactured. The method is not limited. Examples of other hanger members are shown in FIGS.
[0026]
The hanger member (12) shown in FIG. 4 is obtained by punching a metal plate. The hook portions (12a) at both ends may be punched into the shape when the hanger member is punched, or may be formed by bending after punching. The locking portion is formed by punching or punching the locking through hole (12b).
[0027]
The hanger member (13) shown in FIG. 5 is formed of a plurality of members. At the center of the metal hanger member base (14), there is a bolt mounting hole (14a) in which a screw for mounting a bolt (18) connected to a support or supported body is cut on the inner peripheral surface. ing. Also, arm member mounting grooves (14b) are provided on both sides of the hanger member base (14), and arm members having hook portions (15a) formed at the tip of the arm member mounting grooves (14b). (15) is attached by brazing or welding. (16) is a nut for fixing the hanger member base (14) so as not to move with respect to the bolt (18), and (17) is arranged between the hanger member base (14) and the nut (16). Spring washer. (3) is a cylindrical elastic member made of an elastomer such as rubber or elastic resin.
[0028]
FIG. 6 shows the elastic member (3). The elastic member (3) has an insertion space (3c) extending from the end surface (3a) on the support (50) side to the end surface (3b) on the supported body (60) side. The insertion space (3c) in this embodiment has a substantially cross-shaped cross section when two slot-shaped through holes intersect. The width of the slot-shaped through hole is the thickness of the arms (1c) and (2c) of the support-side hanger member (1) and the supported-side hanger member (2) (or the diameter of the metal wire if the hanger member is made of metal wire) About the same level. Although the crossing angle of the two slot-shaped through holes is 90 ° in this embodiment, other angles may be used. (3d) is the end of the slot-shaped through hole where the insertion space (3c) intersects, and is the portion of the insertion space (3c) closest to the outer periphery of the elastic member (3).
[0029]
In this example, natural rubber was used as the material of the elastic material (3), but it is not particularly limited, and elastomers such as various rubbers and elastic resins can be used, for example, semiconductors, liquid crystal panels, etc. When used in a clean room for manufacturing, fluoroelastomers (such as pressure and wear are less likely to scrape the surface of the elastic body, less likely to cause dirt due to scattering of shavings, and less likely to contaminate the air environment due to outgassing ( A rubbery copolymer containing fluorine atoms in the molecule) or EPDM (ethylene propylene diene terpolymer) can be used.
[0030]
(4) is a coil spring disposed around the elastic material (3), and the inner diameter thereof is about the same as the outer shape of the elastic material (3). (4a) is the end of the coil spring (4) on the support (50) side, and (4b) is the end of the support (60) side.
[0031]
The support-side hanger member (1) has hook portions (1a) at both ends hooked to the supported-portion (60) -side end portion (4b) of the coil spring (4). The support-side hanger member (1) passes through the insertion space (3c) of the elastic material (3), and the portion including the support-side locking portion (1b) is from the support-side end surface (3a) of the elastic body (3). Protruding. When the support body side hanger member (1) passes through the insertion space (3c) of the two support body side arm parts (1c), the support side hanger member (1) is in contact with or close to the opposite end part (3d) in the cross direction.
[0032]
The supported-side hanger member (2) is attached in the opposite direction to the supported-side hanger member (1), and the hook portion (2a) is attached to the support (50) side end portion (4a) of the coil spring (4). It is caught. Then, through the insertion space (3c) of the elastic member (3), the portion including the supported-member-side locking portion (2b) protrudes from the supported-device-side end surface (3b) of the elastic member (3). When the two supported side arm portions (2c) of the supported side hanger member (2) pass through the insertion space (3c), the arm side (1c) of the supported side hanger member (1) is inserted. It is inserted into another slot-shaped hole that intersects the slot-shaped hole. Accordingly, the support-side hanger member (1) is disposed 90 ° away from the supported-side hanger member (2), and the two do not contact each other.
[0033]
When the supported body (60) or the support body (50) vibrates, the vibration energy is absorbed by the expanding and contracting coil spring (4) and the elastic material (3), and surging is removed by the elastic material (3). The Therefore, vibration is absorbed between the supported body (60) and the support body (50), and transmission of vibration between the both is reduced. Accordingly, it is possible to effectively prevent the vibration of the pipe from being transmitted to the support due to the pulsation of the fluid flowing through the pipe or the water hammer when the valve of the pipe is closed.
[0034]
The support-side hanger member (1) is not in contact with the supported-side hanger member (2) except for the hook portions (1a) and (2a) at the tip of the coil spring (4). Therefore, it is possible to prevent abnormal transmission of vibration caused by the coil spring (4) coming into contact with both the hanger members (1) and (2) except at the ends (4a) and (4b).
[0035]
In this embodiment, the elastic material (3) using the insertion space (3c) having a substantially cross-shaped cross section is used. However, the shape of the elastic material (3) is not limited to this. For example, a plurality of through holes for inserting the arm portions (1c), (2c) of the hanger members (1), (2) may be provided independently. FIG. 7 is an end view of another example of the elastic material. As described above, the arm portions (1c), (2) of the hanger members (1), (2) are provided as insertion spaces in the outer peripheral portion of the elastic material (130). A groove (130a) for fitting 2c) may be provided.
[0036]
[Example 2]
FIG. 8 is a diagram for explaining this embodiment. The basic configuration is the same as that of the first embodiment, except that the hanger member shown in FIG. 5 described above is used as the hanger member, and the tension of the vibration isolator can be adjusted.
[0037]
The structure of the support-side hanger member (13) is as described above with reference to FIG. The basic structure of the supported-side hanger member (23) is the same as that of the supported-side hanger member (13), but the bolt (28) of the supported-side hanger member (23) is the bolt (18) of the supported-side hanger member (13). On the contrary, the screw is cut.
[0038]
Correspondingly, on the inner peripheral surface of the hanger member base (24) of the hanger member base (24) of the supported hanger member (23), the bolt mounting hole of the hanger member base (14) of the support hanger member (13) (14a) The screw is cut away from the inner peripheral surface. The nut (26) of the supported-body-side hanger member (23) is also a reverse screw with respect to the nut (16) of the supported-body-side hanger member (13). The rest is the same as in the first embodiment.
[0039]
When the position of the support body and the position of the supported body are fixed, the tension of the vibration isolator can be changed by holding and rotating the vibration isolator. For example, when the vibration isolator is rotated clockwise as viewed from the support side, the support side hanger member (13) moves to the supported side while rotating along the screw. On the other hand, the supported hanger member (23) moves to the support side while rotating.
[0040]
As a result, the support-side hanger member (13) and the supported-side hanger member (23) come close to each other, the hook member (15a) at the tip of the arm member (15) of the support-side hanger member (13), and the supported-side hanger member The distance between the arm member (25) (23) and the hook portion (25a) at the tip is increased. The elastic material (3) and the coil spring (4) receive a force in the direction of being compressed from the hook portion (15a) of the support-side hanger member (13) and the hook portion (25a) of the supported-side hanger member (23). However, when the distance between the hook portion (15a) and the hook portion (25a) is increased, the length of the elastic material (3) and the coil spring (4) is increased, and the tension is decreased.
[0041]
On the other hand, when the vibration isolator is turned counterclockwise when viewed from the support side, the support side hanger member (13) moves to the support side while rotating along the screw, and the supported side hanger member (23) rotates. While moving to the supported body side. Thus, the distance between the hook portion (15a) at the tip of the arm member (15) of the support-side hanger member (13) and the hook portion (25a) at the tip of the arm member (25) of the supported-side hanger member (23) is The elastic material (3) and the coil spring (4) are compressed and shortened, and the tension is increased.
[0042]
By adjusting the tension of the elastic material (3) and the coil spring (4) in this way, it is possible to adjust the vibration-proofing effects such as the damping effect and the impact relaxation. The above is the case where the positions of the support and the supported body are fixed.For example, when the position of the supported body is not fixed, the vibration isolator is turned to turn the elastic material (3) and the coil. It can also be used as a fine adjustment of the distance between the support and the supported body by adjusting the length of the spring (4).
[0043]
[Example 3]
FIG. 9 is a diagram for explaining the present embodiment. This embodiment is also similar to the first embodiment in that an elastic material is disposed between the support-side hanger member and the support-side hanger member, but the configuration of the elastic material (30) is different. Although the support-side hanger member (1) is not shown in FIG. 9 for easy viewing, the support-side hanger member (1) is disposed on the elastic member (30) in the opposite direction to the supported hanger member (2) as in the first embodiment.
[0044]
(30) is a cylindrical elastic material made of an elastomer such as rubber or elastic resin, and has a columnar insertion space (30a) penetrating between both end faces at the center. Unlike the first embodiment, no coil spring is disposed around the elastic material (30).
[0045]
An end surface contact plate (40) made of metal or hard synthetic resin is disposed on the end surface on the support side of the elastic material (30), and an end surface contact plate (140) is also disposed on the end surface on the supported body side. ing. The end surface contact plate (40) on the support side and the end surface contact plate (140) on the support side are the same material and the same shape, and the only difference is the location where they are attached. The end surface abutting plates (40) and (140) have a disk shape whose diameter is substantially equal to the diameter of the elastic material (30), and are provided with cross-shaped end insertion portions (41) and (141) penetrating between the front and back surfaces. It has been.
[0046]
The end insertion portions (41), (141) have slot-shaped through holes intersecting in a cross shape, but one of the through holes has a narrow locking slot-shaped through hole (41a), (141a The other through hole is a wide through slot through hole (41b), (141b).
[0047]
The end face contact plate (40) disposed on the support-side end surface of the elastic material (30) and the end surface contact plate (140) disposed on the supported-end-side end surface are cross-shaped end insertion portions (41), The direction of (141) is shifted by 90 °. That is, the engagement through hole (41a) of one end surface abutment plate (40) and the passage through hole (141b) of the other end surface abutment plate (140) face each other through the insertion space (30a). It will be.
[0048]
The supported-side hanger member (2) is hooked to the edge near the slot-like through hole (41a) for locking of the end surface abutting plate (40) with the hook part (2a) at the tip attached to the support side. (30) through the insertion space (30a), through the slotted through hole (141b) of the end surface contact plate (140) disposed on the supported body side through the support-side locking portion ( 2b) protrudes from the end surface contact plate (40) on the supported body side. Since the passage slot-shaped through hole (141b) is wide, the supported-body-side arm portion (2c) of the supported-body-side hanger member (2) does not come into contact with the end surface contact plate (140) on the supported body side.
[0049]
Although not shown, the support-side hanger member is also attached in the same manner although the direction is reversed. That is, the hook part is hooked on the edge near the slot-like through hole (141a) for locking of the end surface contact plate (140) on the supported side, passes through the inside of the insertion space (30a), and The locking portion protrudes from the end surface abutting plate (40) on the supported body side through the passing slot-like through hole (41b) of the end surface abutting plate (40). Since the passing slot-shaped through hole (41b) is wide, the support-side arm portion of the support-side hanger member does not come into contact with the end surface contact plate (40) on the support side.
[0050]
In this way, by changing the width of the end insertion portion (41) that intersects the cross shape of the end surface abutting plate (40), one side becomes a narrow locking slot-shaped through hole (41a), and the other intersects with this. The reason why the slot-shaped through hole (41b) is wide is to prevent vibration from being directly transmitted between the hanger members through the metal end surface abutting plate (40). .
[0051]
Since the supported-side hanger member (2) and the supported-side hanger member (1) do not contact the same end surface contact plate (40), vibration that is not attenuated through the end surface contact plate (40) is directly applied to the hanger member. The vibration of one side (for example, the supported body side) is always damped through the elastic material (30) and then transmitted to the other (for example, the support body side), so the vibration isolation effect is large. .
[0052]
In the present embodiment, the elastic material (30) itself may be a simple cylindrical shape, so that a general-purpose rubber pipe can be used, and manufacturing is easy. Also, end face contact plates (40), (140) are arranged at the end of the elastic material (30), and the hook parts of the hanger members (1), (2) are (1a), (2a) Since the end face contact plates (40) and (140) are hooked, it is possible to prevent the elastic member (30) from being damaged by being pressed by the hook portions (1a) and (2a).
[0053]
In the present embodiment, a disc-shaped end surface contact plate (40) having a cross-shaped end insertion portion (41) was used, but the shape of the end surface contact plate is not limited to this, Other shapes may be used. Although the end portion insertion portion is a cross-shaped through hole in the embodiment, it may be combined with a groove portion provided in the outer peripheral portion of the end portion insertion portion in the outer peripheral portion. FIG. 11 and FIG. 12 show an example of an end insertion portion having such an end insertion portion.
[0054]
FIG. 11 is a view showing an end surface abutting plate having a groove ((A) is a plane, (B) is a central cross section), and this end surface abutting plate (240) is a long hole-like through hole (241 ) And a groove portion (242) provided on the outer peripheral portion. In use, the groove portion (242) provided on the outer peripheral portion is passed through the arm portion of the hanger member, and the hook portion is engaged between the elongated hole-like through hole (241) and the outer edge of the end surface contact plate (240). Stop. The end surface abutting plate (240) has an edge portion (243) around the periphery, and the inner peripheral surface of the edge portion (243) is in contact with the outer peripheral portion of the end portion of the elastic material (30). Attached).
[0055]
FIG. 12 is a view showing still another example of the end surface abutting plate ((A) is a plane, (B) is a central cross section), and this end surface abutting plate (340) also has a long hole-like shape. It has a hole (341) and a groove (342) provided on the outer periphery. The groove part (342) provided in the outer peripheral part is formed so as to become deeper toward the central part on the elastic material (30) side. However, unlike what is shown in FIG. 11, it has a part (343) with a small diameter, and this part is attached so that it may fit in the inner peripheral part of the edge part of an elastic material (30).
[0056]
[Example 4]
The basic configuration of the present embodiment is the same as that of the third embodiment, but only the elastic material (31) is different. FIG. 10 is a view showing the elastic material (31) used in this example.
[0057]
The external shape of the elastic material (31) of this example is the same as that of the elastic material (30) of Example 3, and is cylindrical and has an insertion space (31a) at the center. However, the difference is that the coil spring (32) is embedded in the elastomer constituting the elastic material (31).
[0058]
By configuring the elastic material (31) in such a manner, when the elastic material (31) expands and contracts, it is possible to obtain the vibration isolation effect by the elastomer and the coil spring (32) at the same time, and the vibration isolation effect is further enhanced. . Other configurations and effects are the same as those of the third embodiment.
[0059]
【The invention's effect】
As described above, according to the present invention, the surging of the coil spring can be absorbed by the elastic material made of elastomer to prevent the vibration-proof effect from being lowered, and the hanger connected to the coil spring and the support body or the supported body. Contact with a member other than the end of the coil spring can be prevented, and abnormal transmission of vibration from the contact portion to the coil spring can be prevented. Thereby, a vibration isolator having a high vibration isolating effect can be provided.
[Brief description of the drawings]
FIG. 1 is a front view of Embodiment 1. FIG.
FIG. 2 is a perspective view of the first embodiment.
3 is a view showing a hanger member used in Example 1. FIG.
FIG. 4 is a view showing another example of a hanger member.
FIG. 5 is a view showing still another example of a hanger member.
FIG. 6 is a diagram showing an elastic material made of elastomer.
FIG. 7 is an end view of another example of an elastic material.
FIG. 8 is a diagram illustrating tension adjustment according to the second embodiment.
9 is a diagram illustrating Example 3. FIG.
10 shows an elastic material used in Example 4. FIG.
FIG. 11 is a view showing another example of the end face contact plate.
FIG. 12 is a view showing still another example of the end surface contact plate.
FIG. 13 is a view showing a pipe suspension (conventional example).
[Explanation of symbols]
(1) Support side hanger member (1)
(1a) Hook part
(1b) (Support side) Locking part
(1c) (Support side) Arm
(2) Supported hanger member
(2a) Hook part
(2b) (Supported side) Locking part
(2c) (Supported side) Arm
(3) Elastic material
(3a) Support side edge
(3b) End surface of the supported body
(3c) Insertion space
(4) Coil spring
(4a) Support side edge
(4b) Supported end side
(30) Elastic material
(40), (140) End plate
(50) Support
(60) Supported body

Claims

A vibration isolator disposed between a support and a supported body,
An elastic material made of an elastomer and having an insertion space from the support side to the supported side;
A coil spring disposed on the side periphery of the elastic material;
A support-side locking portion attached to a hanger member mounting portion of the support, at least two support-side arm portions extending in the same direction from both sides of the support-side locking portion and inserted into the insertion space, and the support side A support-side hanger member that is formed at the tip of the arm and is formed of a hook portion that is locked to the support-side end of the elastic material and the support-side end of the coil spring;
A supported-body-side locking portion that is attached to a hanger member mounting portion of the supported body, and extends from both sides of the supported-body-side locking portion in the same direction, and is inserted into the insertion space without contacting the supported-side hanger member. And at least two supported body side arm portions and a hook portion formed at the distal end portion of the supported body side arm portion and locked to the support body side end portion of the elastic material and the support body side end portion of the coil spring. An anti-vibration device comprising a supported-side hanger member.

The insertion space for the elastic material is a through hole formed by intersecting two slot-shaped through holes, and the support-side arm portion of the support-side hanger member is inserted near both ends of one slot-shaped through hole to be supported. The anti-vibration device according to claim 1, wherein the supported-body-side arm portion of the body-side hanger member is inserted near both ends of the other slot-shaped through hole.

A vibration isolator disposed between a support and a supported body,
An elastic material made of an elastomer and having an insertion space extending from the support side to the supported side;
An end surface abutting plate disposed on the support side end portion and the supported side end portion of the elastic material, and formed with end insertion portions reaching the front and back surfaces;
A support-side locking portion that is attached to a hanger member mounting portion of the support, extends in the same direction from both sides of the support-side locking portion, an end insertion portion of an end surface contact plate on the support side, and an insertion space for an elastic material And at least two support-side arm portions that are inserted through the end portion insertion portion of the end surface contact plate on the supported body side without contacting the end surface contact plate on the support body side, and on the distal end portion of the support side arm portion. A support-side hanger member formed of a hook portion that is formed and hooked to the supported end-side contact plate;
A support-side locking portion that is attached to the hanger member mounting portion of the supported body, an end insertion portion of the end-face contact plate on the supported body side, and an elastic material that extends in the same direction from both sides of the support-side locking portion At least two supported side arm portions that pass through the insertion space and the end insertion portion of the end surface contact plate on the support side without contacting the end surface contact plate on the support side and the support side hanger member. And a supported-body-side hanger member formed by a tip portion of the supported-body-side arm portion and a hook portion that is engaged with an end surface contact plate on the supported body side. Shaker.

The end insertion portion of the end surface abutting plate includes a locking slot-shaped through hole and a passing slot-shaped through hole that intersects the locking slot-shaped through hole and is wider than the locking slot-shaped through hole. Become
The support-side arm portion is inserted through the passage slot-shaped through hole of the end surface contact plate on the support side, and the hook portion of the support-side hanger member is the edge near the slot-shaped through hole for locking of the end surface contact plate on the supported body side. Locked to
The arm on the supported side is inserted through the slot-like through hole for the end surface abutting plate on the side of the supported body, and the hook portion of the hanger member on the supported side is near the slot-shaped through hole for locking on the end surface abutting plate on the side of the support The anti-vibration device according to claim 3, wherein the anti-vibration device is locked to the edge.

5. The vibration isolator according to claim 3, wherein a coil spring is embedded in the elastic material.

The vibration isolator according to any one of claims 1 to 5, wherein fluoroelastomer or ethylene propylene diene terpolymer (EPDM) is used as an elastomer that is a material of the elastic material.