JP3990166B2 - air compressor - Google Patents

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Publication number
JP3990166B2
JP3990166B2 JP2002051870A JP2002051870A JP3990166B2 JP 3990166 B2 JP3990166 B2 JP 3990166B2 JP 2002051870 A JP2002051870 A JP 2002051870A JP 2002051870 A JP2002051870 A JP 2002051870A JP 3990166 B2 JP3990166 B2 JP 3990166B2
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Japan
Prior art keywords
pressure
pressure reducing
quick
reducing valve
joint
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JP2002051870A
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JP2003254242A (en
Inventor
喜之 兼本
一正 金井
哲夫 城戸
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Hitachi Ltd
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Hitachi Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、例えば建設現場の釘打作業のエア源に用いる空気圧縮機に関する。
【0002】
【従来の技術】
一般に空気等の気体を圧縮して空圧機器等に供給する圧縮機は、気体を貯留する貯留タンクと、気体を圧縮して該貯留タンクに貯える圧縮部と、該貯留タンク内に貯えられた一次圧の圧縮気体を二次圧として減圧し当該二次圧を調整する減圧弁と、該減圧弁からの圧縮空気の二次圧を表示する圧力計と、貯留タンクに設けられ減圧弁からの圧縮空気の二次圧を外部に取出す継手とを備えている。ここで、一般的に、継手としてはワンタッチカプラと呼ばれる急速継手が用いられている。
【0003】
このように構成される従来技術による圧縮機は、駆動モータによって駆動軸を回転駆動することにより、該駆動軸に連結された圧縮部を駆動し、吸込んだ空気を圧縮して空気タンク内に貯留する。そして、圧縮機には例えば釘打機を接続され、空気タンク内の圧縮空気によって釘打機を駆動し、釘打作業を行なっている(例えば、特開平10−246185号公報、特開平11−218080号公報等)。
【0004】
ところで、近年の大工さんの釘打作業は殆ど釘打機を用い、釘打機の種類も釘の太さ、長さ等用途によって多岐に亘っており、一度に複数の釘打機を圧縮機に接続して釘打作業を行なうことも多い。このため、圧縮機の減圧弁の継手は減圧弁1個に対し2個設置されることが一般的となっている。
【0005】
【発明が解決しようとする課題】
ところで、上述した従来技術による圧縮機、減圧弁1個に対し2個の継手を上,下に離間してほぼ平行に伸びるように設置しようとすると、釘打機側の外部配管を先に上側の継手に接続した状態で別の釘打機の外部配管を下側の継手に接続するときには、上側の継手に接続した外部配管が邪魔となって接続作業が面倒になるという問題がある。同様に、下側外部配管を先に外す場合、上側外部配管が邪魔となり、操作が困難になるという問題がある。
【0006】
また、減圧弁の操作時には圧縮機の前側等に立っている大工さんは斜めに手を延ばして調整つまみ部操作を行なう。しかし、従来技術にあっては、減圧弁の調整つまみ部はほぼ真上に向けて配置されているから、手を延ばして減圧弁の調整つまみ部操作を行なうことが大工さんにとって面倒な作業になるという問題がある。
【0007】
さらに、減圧弁に取付けられた圧力計は、上側に向け垂直方向に取付けられ、表示面は水平方向に配置されているから、圧縮機の前側等に立っている大工さんにとって圧力計を斜め方向から見ることになり、圧力計が大工さんにとって見ずらいという問題がある。
【0008】
本発明は上述した従来技術の問題に鑑みなされたもので、本発明の目的は、釘打機等からのホースを継手に容易に着脱できると共に、減圧弁の調整つまみ部操作を円滑に行なうことができ、さらに、減圧弁の圧力計の表示面を外部から見易くできるようにした空気圧縮機を提供することにある。
【0009】
【課題を解決するための手段】
上述した課題を解決するために、請求項1の発明による空気圧縮機は、左,右に並行に配置された円筒状のタンクにより構成され、空気貯留す左,右2つの貯留タンクと、該左,右の貯留タンクの間の上側に搭載され、空気を圧縮し、前記各貯留タンクに貯える圧縮部と、前記各貯留タンクの軸方向前側寄りの上部に設けられ、前記各貯留タンクに貯えられた一次圧の圧縮空気を二次圧に減圧する左,右2つの減圧弁と、該左,右の減圧弁によって減圧された二次圧の圧力を表示する左,右2つの圧力計と、前左,右の減圧弁にそれぞれ接続され上側の接続口と下側の接続口とをもった左,右2つの分岐管と、前記減圧弁によって減圧された圧縮空気を外部に取出すため該左,右の分岐管の上,下の接続口にそれぞれ接続して設けられ、前記各貯留タンクの上方に配置されて上,下に離間すると共に前記各貯留タンクの軸方向にほぼ平行に延びる左,右2つの上側急速継手,下側急速継手と、から構成され、前記左,右の下側急速継手は、前記左,右の上側急速継手より前記各貯留タンクの軸方向前側に突出して設けたことを特徴としている。
【0011】
このように構成したことにより、例えば2つの釘打機の外部配管をそれぞれ上側急速継手、下側急速継手に接続して取付けることができる。そして、これら2個の急速継手のうち下側急速継手の先端は、上側急速継手の先端よりも前側に配置されるから、先に上側急速継手に釘打機等の外部配管を接続し、後で別の釘打機等の外部配管を下側急速継手に接続するときでも、既に接続した外部配管が邪魔になることなく、下側急速継手に外部配管を容易に接続することができる。同様に下側急速継手から外部配管を先に外す場合においても外部配管を容易に外すことができる。
【0012】
また、請求項2の発明によると、前記各分岐管は、上,下方向に延びた垂直管と、該垂直管の上側からほぼ直角に前方へと屈曲し前記上側急速継手が設けられる上側屈曲管と、前記垂直管の下側からほぼ直角に前方へと屈曲し前記下側急速継手が設けられる下側屈曲管とから構成され、該下側屈曲管は、前記上側屈曲管よりも前方に突出する構成としている。
【0013】
このように構成したことにより、垂直管、上側屈曲管および下側屈曲管からなる分岐管のうち、下側急速継手が設けられる下側屈曲管を、上側急速継手が設けられる前記上側屈曲管よりも前方に突出する配置とすることができる。
【0014】
さらに、請求項3の発明によると、前記左,右の急速継手の間には、前記左,右の貯留タンクから延びる運搬用の把手を設け、該把手は、前記下側急速継手の先端よりも、前記貯留タンクの軸方向前側寄りに位置する構成としている。このように構成したことにより、運搬用の把手を、下側急速継手の先端よりもタンクの軸方向前側寄りに配置することができる。
【0015】
一方、請求項4の発明は、前記左右の減圧弁を、設定可能な二次圧が異なる高圧用減圧弁と低圧用減圧弁とにより構成している。
【0016】
【発明の実施の形態】
以下、本発明の実施の形態による空気圧縮機としてタンク一体型の空気圧縮機を例に挙げ、添付図面に従って説明する。
【0017】
ここで、図1ないし図4に基づいて、1はタンク一体型の空気圧縮機で、該空気圧縮機1は、図1、図2に示す如く、後述の貯留タンク2,3、圧縮部7、駆動モータ8等によって大略構成されている。
【0018】
2,3は左,右方向に離間して互いに並行に延びた一対の貯留タンクで、該各貯留タンク2,3は、後述の圧縮部7から供給される圧縮空気を貯えるものである。ここで、各貯留タンク2,3は、軽量化を図るために例えばアルミニウム材料等を用いてほぼ円筒状の密閉容器として形成され、連結ステー(図示せず)によって互いに連結されている。また、各貯留タンク2,3の前,後方向(長さ方向)両端側には、下側に位置して脚体4,4,…が取付けられ、上側に位置して運搬用の把手5,5が取付けられている。また、左,右の貯留タンク2,3は、連結配管6によって連通され、左側の貯留タンク2は、後述する高圧側の圧縮機構7Cに接続されている。
【0019】
7は各貯留タンク2,3間の後側寄りに取付けられた圧縮部で、該圧縮部7は、クランクケース7Aと、該クランクケース7Aの相対位置に配設された低圧側の圧縮機構7B、高圧側の圧縮機構7Cとからなる、所謂水平対向型の2段式空気圧縮機として構成されている。
【0020】
8は各貯留タンク2,3間に位置して圧縮部7の前側に設けられた駆動モータで、該駆動モータ8は、外部から給電されることにより駆動軸(図示せず)を介して圧縮部7を駆動するものである。
【0021】
9は貯留タンク2,3内に貯えられた一次圧の圧縮空気を二次圧に減圧する低圧用減圧弁で、該低圧用減圧弁9は、貯留タンク2に取付けられた弁部9Aと、該弁部9Aに対して上側に向け垂直方向に取付けられた調整つまみ部9Bとによって構成されている。
【0022】
そして、低圧用減圧弁9は、調整つまみ部9Bを操作することによって後述の急速継手12,13から吐出される圧縮空気の二次圧を調整するものである。ここで、図3に示すように低圧用減圧弁9は、後述の急速継手12,13に向け斜め前方に軸線O1−O1の傾きをもって配置されている。
【0023】
10は低圧用減圧弁9に配管10Aを介して設けられた低圧用圧力計で、該圧力計10は、低圧用減圧弁9によって調整された圧縮空気の二次圧を検出して表示面10Bで表示するものである。ここで、圧力計10は、低圧用減圧弁9の後側に位置して配置されている。そして、図3に示すように圧力計10の表示面10Bは、低圧用減圧弁9の調整つまみ部9Bの軸線O1−O1に対してほぼ平行な軸線O2−O2をもって配置されている。
【0024】
11は低圧用減圧弁9の弁部9Aに設けられた分岐管で、該分岐管11は、上,下方向に垂直に延びた垂直管11Aと、該垂直管11Aの上側からほぼ直角に前方へと屈曲した上側の接続口としての上側屈曲管11Bと、垂直管11Aの下側からほぼ直角に屈曲して前方に延びた下側の接続口としての下側屈曲管11Cとによって構成されている。ここで、下側屈曲管11Cは、上側屈曲管11Bよりも前方に突出して延びている。
【0025】
12は分岐管11の上側屈曲管11Bに接続して設けられた上側継手としての低圧用の上側急速継手、13は分岐管11の下側屈曲管11Cに接続して設けられた下側継手としての低圧用の下側急速継手で、該急速継手12,13は、上,下に離間して前,後にほぼ平行に延びて配置されている。
【0026】
そして、急速継手12,13には例えば別々の釘打機(図示せず)からのホースが接続されるものである。ここで、図3に示すように急速継手12,13のうち下側急速継手13の先端は、上側急速継手12の先端よりも寸法d1だけ前側に配置されている。ここで、寸法d1は、2個の急速継手12,13にホースを接続する場合に、先に上側急速継手12にホースを接続しても、後から別のホースを下側急速継手13に接続するときに、既に上側急速継手12に接続されたホースに邪魔されることなく、別のホースを下側急速継手13に容易に接続することができる寸法に設定されている。
【0027】
14は貯留タンク2,3内に貯えられた一次圧の圧縮空気を二次圧に減圧する高圧用減圧弁で、該高圧用減圧弁14についても、低圧用減圧弁9とほぼ同様に、弁部14Aと調整つまみ部14Bとによって構成されている。ここで、高圧用減圧弁14は、後述の急速継手17,18に向け斜め前方に軸線O3−O3の傾きをもって配置されている。
【0028】
15は低圧用減圧弁9に配管15Aを介して設けられた高圧用圧力計で、該圧力計15についても、低圧用圧力計10とほぼ同様に、高圧用減圧弁14によって調整された圧縮空気の二次圧を検出して表示面15Bで表示するものである。ここで、圧力計15は、高圧用減圧弁14の後側に位置して配置されている。そして、図4に示すように圧力計15の表示面15Bは、高圧用減圧弁14の調整つまみ部14Bの軸線O3−O3に対してほぼ平行な軸線O4−O4を有している。
【0029】
16は高圧用減圧弁14の弁部14Aに設けられた分岐管で、該分岐管16は、分岐管11とほぼ同様に、垂直管16A、上側屈曲管16Bおよび下側屈曲管16Cによって構成されている。ここで、下側屈曲管16Cは、上側屈曲管16Bよりも前方に突出して延びている。
【0030】
17は分岐管16の上側屈曲管16Bに接続して設けられた上側継手としての高圧用の上側急速継手、18は分岐管16の下側屈曲管16Cに接続して設けられた下側継手としての高圧用の下側急速継手で、該急速継手17,18は、上,下に離間して前,後にほぼ平行に延びている。
【0031】
そして、急速継手17,18には例えば別々の釘打機(図示せず)からのホースが接続されるものである。ここで、図4に示すように急速継手17,18のうち下側急速継手18の先端側は、上側急速継手17の先端側よりも寸法d2だけ前側に配置されている。ここで、寸法d2は、前述した寸法d1と同様に、上側急速継手17、下側急速継手18の順でホースを接続するときに、下側急速継手18に容易にホースを接続できるような寸法に設定されている。なお、19は貯留タンク2,3上に着脱可能に取付けられたカバーである。
【0032】
本実施の形態によるタンク一体側の圧縮機1は上述の如き構成を有するもので、次に、その作動について説明する。
【0033】
まず、駆動モータ8に給電して駆動軸を回転駆動させると、低圧側の圧縮機構7Bが外気を吸込んで圧縮し、この圧縮空気を高圧側の圧縮機構7Cに供給する。これにより、高圧側の圧縮機構7Cは、低圧側の圧縮機構7Bからの圧縮空気をさらに圧縮して高圧圧縮空気とし、この高圧圧縮機を貯留タンク2,3に貯留する。そして、この圧縮部7の急速継手12,13,17,18には例えば複数の釘打機側のホース(図示せず)が接続され、大工さん等の作業者は、これらの釘打機を用いて釘を打ち付ける作業を行なう。
【0034】
ここで、本実施の形態では、急速継手12,13のうち下側急速継手13の先端を上側急速継手12の先端よりも寸法d1だけ長く延びるように形成している。
【0035】
このため、作業者が複数の釘打機のホース等を先に上側急速継手12に接続したときでも、下側急速継手13が上側急速継手12よりも長く延びているから、釘打機のホース等を下側急速継手13に容易に接続することができ、作業性を高めることができる。同様に下側急速継手13からホース等を先に外す場合もホース等を容易に外すことができる。
【0036】
また、下側急速継手18の先端についても上側急速継手17の先端よりも寸法d2だけ長く延びるように配置したから、先に上側急速継手17に釘打機等のホースを接続したとしても、他の釘打機等のホースを下側急速継手18に容易に接続することができる。同様に下側急速継手18からホース等を先に外す場合もホース等を容易に外すことができる。
【0037】
また、低圧用減圧弁9の調整つまみ部9Bを、圧縮機1の前側等にいる作業者に向けて前方へと斜め上向きに軸線O1−O1の傾きをもって配置したので、作業者は低圧用減圧弁9に向けて手を斜めに延ばした状態で調整つまみ部9Bを簡単に握ることができ、調整つまみ部9Bの操作性を向上することができる。
【0038】
また、高圧用減圧弁14の調整つまみ部14Bを、圧縮機1の前側等にいる作業者に向けて前方へと斜め上向きに軸線O3−O3の傾きをもって配置したので、作業者は高圧用減圧弁14に向けて手を斜めに延ばした状態で調整つまみ部14Bを簡単に操作することができ、調整つまみ部14Bの操作性を向上することができる。
【0039】
さらに、本実施の形態では、低圧用圧力計10の表示面10Bを低圧用減圧弁9の調整つまみ部9Bの軸線O1−O1とほぼ平行に配置したので、圧縮機1の前側等で作業する作業者は、斜めに傾けて配置された圧力計10の表示面10Bを正面から見ることができ、圧力計10を見るときの作業性を高めることができる。
【0040】
また、高圧用圧力計15についても、高圧用減圧弁14の調整つまみ部14Bの軸線O3−O3とほぼ平行に配置したので、圧縮機1の前側等で作業する作業者は、斜めに傾けて配置された圧力計15の表示面15Bを正面から見ることができ、圧力計15を見易くすることができる。
【0041】
また、急速継手12,13は前,後に水平に延びるように配置したので、塵埃等が急速継手12,13に入りにくくなり、急速継手12,13内を清浄に保つことができる。さらに、急速継手17,18についても前,後に平行に延びるように配置したので、急速継手17,18内を清浄に保つことができる。
【0042】
なお、実施の形態では、低圧用圧力計10を低圧用減圧弁9の後側に配置する構成とした場合を例示した。しかし、本発明はこれに限ることなく、例えば圧力計10を低圧用減圧弁9の下側に配置してもよく、一方、左側または右側に配置してもよいものである。このことは、高圧用圧力計15についても同様である。
【0043】
また、実施の形態では、圧縮部として水平対向型の2段式空気圧縮機をなす圧縮部7を例に挙げて説明した。しかし、本発明はこれに限らず、例えば、1段または3段以上の空気圧縮機を圧縮部として用いてもよく、また、シリンダの配置形態もV型等の他の形態としてもよい。
【0044】
また、実施の形態では、圧縮部7の圧縮機構7B,7Cのシリンダ内でピストン(いずれも図示せず)が往復動するレシプロ型の圧縮部7を例示した。しかし、本発明はこれに限らず、例えばロータリ型、スクロール型等の他の形式の圧縮部としてもよい。
【0045】
さらに、実施の形態では、圧縮機として2本の貯留タンク2,3が一体的に設けられたタンク一体型の圧縮機1を例に挙げて説明したが、本発明はこれに限らず、たとえば貯留タンクを1本としてもよく、また、貯留タンクを分離して設ける構成としてもよい。
【0047】
【発明の効果】
以上詳述した通り、請求項1の発明によれば、左,右に並行に配置された円筒状のタンクにより構成され、空気を貯留する左,右の貯留タンクと、該左,右の貯留タンクの間の上側に搭載され、空気を圧縮し、前記貯留タンクに貯える圧縮部と、前記各貯留タンクの軸方向前側寄りの上部に設けられ、前記貯留タンクに貯えられた一次圧の圧縮空気を二次圧に減圧する左,右の減圧弁と、該左,右の減圧弁によって減圧された二次圧の圧力を表示する左,右の圧力計と、前記左,右の減圧弁にそれぞれ接続され上側の接続口と下側の接続口とを有する左,右の分岐管と、前記各減圧弁によって減圧された圧縮空気を外部に取出すため該左,右の分岐管の各接続口にそれぞれ接続して設けられ、前記各貯留タンクの上方に配置されて上,下に離間すると共に前記貯留タンクの軸方向にほぼ平行に延びる左,右2つの上側急速継手下側急速継手とから構成され、前記各下側急速継手は、前記上側急速継手より前記各貯留タンクの軸方向前側に突出して設ける構成としたので、例えば先に上側急速継手に釘打機等の外部配管を接続し、後で別の釘打機等の外部配管を下側急速継手に着脱するときに、既に接続した上側急速継手側の外部配管が邪魔になることなく、下側急速継手に外部配管を容易に着脱することができ、配管の着脱作業を容易に行なうことができる。そして、上側急速継手と下側急速継手とは、上側の接続口と下側の接続口とをもった分岐管に接続されて減圧弁に取付けているので、例えば2つの釘打機のホースをそれぞれ上側急速継手、下側急速継手に取付けることができ、作業者が釘を打付けるときの作業性を高めることができる。
【0048】
また、請求項2の発明によると前記各分岐管は、上,下方向に延びた垂直管と、該垂直管の上側からほぼ直角に前方へと屈曲し前記上側急速継手が設けられる上側屈曲管と、前記垂直管の下側からほぼ直角に前方へと屈曲し前記下側急速継手が設けられる下側屈曲管とから構成され、該下側屈曲管は、前記上側屈曲管よりも前方に突出する構成としたので、垂直管、上側屈曲管および下側屈曲管からなる分岐管のうち、下側急速継手が設けられる下側屈曲管を、前記上側急速継手が設けられる上側屈曲管よりも前方に突出する配置とすることができる。
【0049】
さらに、請求項3の発明によると前記左,右の急速継手の間には、前記左,右の貯留タンクから延びる運搬用の把手を設け、該把手は、前記下側急速継手の先端よりも、前記貯留タンクの軸方向前側寄りに位置する構成としたので、運搬用の把手を、下側急速継手の先端よりもタンクの軸方向前側寄りに配置することができる。
【0050】
一方、請求項4の発明、左,右の減圧弁を、設定可能な二次圧が異なる高圧用減圧弁と低圧用減圧弁とにより構成しているので、貯留タンクに貯えられた一次圧の圧縮空気を、高圧用減圧弁と低圧用減圧弁とを用いて異なる二次圧に減圧することができる。
【図面の簡単な説明】
【図1】本発明の実施の形態によるタンク一体型圧縮機を示す外観斜視図である。
【図2】タンク一体型圧縮機をカバーを取外した状態で示す外観斜視図である。
【図3】図2中の低圧用の急速継手等を示す部分正面図である。
【図4】図2中の高圧用の急速継手等を示す部分背面図である。
【符号の説明】
1 圧縮機
2,3 貯留タンク
7 圧縮部
7A クランクケース
7B 低圧側の圧縮機構
7C 高圧側の圧縮機構
9 低圧用減圧弁
9A,14A 弁部
9B,14B 調整つまみ
10 低圧用圧力計
10B,15B 表示面
11,16 分岐管
11B,16B 上側屈曲管(接続口)
11C,16C 下側屈曲管(接続口)
12 低圧用の上側急速継手(上側継手)
13 低圧用の下側急速継手(下側継手)
14 高圧用減圧弁
15 高圧用圧力計
17 高圧用の上側急速継手(上側継手)
18 高圧用の下側急速継手(下側継手)
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an air compressor used, for example, as an air source for a nailing operation at a construction site.
[0002]
[Prior art]
In general, a compressor that compresses a gas such as air and supplies it to a pneumatic device or the like includes a storage tank that stores the gas, a compression unit that compresses the gas and stores the compressed gas in the storage tank, and the storage tank A pressure reducing valve that adjusts the secondary pressure by reducing the pressure of the compressed gas at the primary pressure as a secondary pressure, a pressure gauge that displays the secondary pressure of the compressed air from the pressure reducing valve, and a pressure gauge provided in the storage tank from the pressure reducing valve And a joint for taking out the secondary pressure of the compressed air to the outside. Here, generally, a quick joint called a one-touch coupler is used as the joint.
[0003]
In the conventional compressor configured as described above, the drive shaft is driven to rotate by the drive motor, thereby driving the compression unit connected to the drive shaft and compressing the sucked air to be stored in the air tank. To do. For example, a nailing machine is connected to the compressor, and the nailing machine is driven by the compressed air in the air tank to perform the nailing operation (for example, Japanese Patent Laid-Open Nos. 10-246185 and 11-11). 2108080 etc.).
[0004]
By the way, most of the recent carpenter's nailing operations use nailing machines, and the types of nailing machines vary widely depending on the use such as the thickness and length of nails. In many cases, the nailing work is performed by connecting to the cable. For this reason, it is common that two joints of the pressure reducing valve of the compressor are installed for one pressure reducing valve.
[0005]
[Problems to be solved by the invention]
However, earlier in the compressor according to the prior art described above, on the two coupling one pressure reducing valve to, when so installed so as to extend substantially parallel to, and spaced below, the external piping of the nailing machine side When connecting the external piping of another nailing machine to the lower joint while being connected to the upper joint, there is a problem that the external piping connected to the upper joint obstructs the connection work. . Similarly, when the lower external pipe is removed first, there is a problem that the upper external pipe becomes an obstacle and the operation becomes difficult.
[0006]
In addition, when operating the pressure reducing valve, the carpenter standing on the front side of the compressor, etc. extends his hand diagonally and operates the adjustment knob. However, in the prior art, the adjustment knob part of the pressure reducing valve is arranged almost directly above, so it is troublesome for carpenters to extend the hand and operate the adjustment knob part of the pressure reducing valve. There is a problem of becoming.
[0007]
Furthermore, the pressure gauge attached to the pressure reducing valve is installed vertically in the upward direction, and the display surface is arranged in the horizontal direction. Therefore, there is a problem that the pressure gauge is difficult for carpenters.
[0008]
The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to easily attach and detach a hose from a nailer or the like to a joint and to smoothly operate an adjustment knob portion of a pressure reducing valve. Furthermore, an object of the present invention is to provide an air compressor that makes it easy to see the display surface of the pressure gauge of the pressure reducing valve from the outside.
[0009]
[Means for Solving the Problems]
To solve the problems described above, an air compressor according to a first aspect of the present invention, the left, is constituted by a cylindrical tank that is arranged in parallel to the right and left you storing air, right two storage tanks Mounted on the upper side between the left and right storage tanks, compressed in the air and stored in each of the storage tanks, and provided in the upper part of each storage tank near the front side in the axial direction. left reducing the pressure of the compressed air in the primary pressure, which is stored in the secondary pressure, and the right two pressure reducing valves, the left, the left to display the pressure of the depressurized secondary pressure by the right of the pressure reducing valve, the right two pressure outside meter, before Symbol left, left with the upper connection opening is connected to the right of the pressure reducing valve and a lower connecting port, and the right two branch pipes, compressed air reduced in pressure by the pressure-reducing valve to retrieve the left, on the right of the branch pipe, et al provided connected under the connection port The left and right upper quick joints and the lower quick joints, which are arranged above the storage tanks and are spaced apart upward and downward and extend substantially parallel to the axial direction of the storage tanks, The left and right lower quick joints are provided so as to protrude from the left and right upper quick joints to the front side in the axial direction of each storage tank .
[0011]
By having such a configuration, for example, each upper quick coupling two of the nailing machine of the external pipe can be attached by connecting to the lower quick couplings. Then, these front end of the lower quick coupling of the two quick coupling, since from the tip of the upper quick coupling is disposed on the front side, connect the external piping of the nailing machine or the like to the upper quick coupling earlier, after in another external piping such as the nailing machine, even when connected to the lower quick coupling without external piping in the way already connected, it is possible to easily connect the external piping to the lower quick couplings. Similarly, when the external pipe is first removed from the lower quick joint, the external pipe can be easily removed.
[0012]
According to a second aspect of the present invention , each of the branch pipes includes a vertical pipe extending upward and downward, and an upper side bent provided with the upper quick joint by bending forward from the upper side of the vertical pipe at a substantially right angle. A lower bent pipe that is bent forward at a substantially right angle from the lower side of the vertical pipe and provided with the lower rapid joint, and the lower bent pipe is further forward than the upper bent pipe. It has a protruding configuration.
[0013]
By configuring in this way, among the branch pipes composed of the vertical pipe, the upper bent pipe and the lower bent pipe, the lower bent pipe provided with the lower quick joint is made more than the upper bent pipe provided with the upper quick joint. Can also be arranged to project forward .
[0014]
According to a third aspect of the present invention , a transport handle extending from the left and right storage tanks is provided between the left and right quick joints, and the grip is connected to a tip of the lower quick joint. Also, the storage tank is positioned closer to the front side in the axial direction . By having such a configuration, the handle for transportation, can you to axially disposed front side of the tank than the tip of the lower quick couplings.
[0015]
On the other hand, the invention of claim 4 is pre Kihidari, the right of the pressure reducing valve, the secondary pressure can be set is constituted by a different high pressure reducing valve and the low pressure reducing valve.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, as an air compressor according to an embodiment of the present invention, a tank-integrated air compressor will be described as an example and described with reference to the accompanying drawings.
[0017]
Here, with reference to FIGS. 1 to 4, 1 is a tank integral type air compressor, the air compressor 1, FIG. 1, as shown in FIG. 2, below the storage tank 2, the compression section 7 The drive motor 8 is generally configured.
[0018]
Reference numerals 2 and 3 denote a pair of storage tanks which are spaced apart in the left and right directions and extend in parallel to each other. Each of the storage tanks 2 and 3 stores compressed air supplied from a compression unit 7 which will be described later. Here, in order to reduce the weight, the storage tanks 2 and 3 are formed as a substantially cylindrical sealed container using, for example, an aluminum material, and are connected to each other by a connecting stay (not shown). In addition, legs 4, 4,... Are attached to both ends of the storage tanks 2, 3 in the front and rear direction (length direction) at the lower side, and the handle 5 for transporting at the upper side. , 5 are attached. The left and right storage tanks 2 and 3 are communicated with each other by a connecting pipe 6, and the left storage tank 2 is connected to a high-pressure side compression mechanism 7C described later.
[0019]
Reference numeral 7 denotes a compression portion attached to the rear side between the storage tanks 2 and 3, and the compression portion 7 includes a crankcase 7A and a low-pressure side compression mechanism 7B disposed at a relative position of the crankcase 7A. Further, it is configured as a so-called horizontally opposed two-stage air compressor composed of a high-pressure side compression mechanism 7C.
[0020]
A drive motor 8 is provided between the storage tanks 2 and 3 and provided on the front side of the compression unit 7. The drive motor 8 is compressed via a drive shaft (not shown) by being supplied with power from the outside. The unit 7 is driven.
[0021]
9 is a low pressure reducing valve for reducing the primary pressure compressed air stored in the storage tanks 2 and 3 to a secondary pressure. The low pressure reducing valve 9 includes a valve portion 9A attached to the storage tank 2; It is comprised by the adjustment knob part 9B attached to the valve part 9A in the orthogonal | vertical direction toward the upper side.
[0022]
And the pressure-reducing valve 9 for low pressure adjusts the secondary pressure of the compressed air discharged from the quick couplings 12 and 13 mentioned later by operating the adjustment knob part 9B. Here, as shown in FIG. 3, the pressure reducing valve 9 for low pressure is disposed with an inclination of an axis O1-O1 obliquely forward toward a rapid joint 12, 13 described later.
[0023]
Reference numeral 10 denotes a low-pressure pressure gauge provided on the low-pressure pressure reducing valve 9 via a pipe 10A. The pressure gauge 10 detects the secondary pressure of the compressed air adjusted by the low-pressure pressure reducing valve 9 and displays the display surface 10B. Is displayed. Here, the pressure gauge 10 is disposed on the rear side of the low pressure reducing valve 9. As shown in FIG. 3, the display surface 10B of the pressure gauge 10 is arranged with an axis O2-O2 substantially parallel to the axis O1-O1 of the adjustment knob portion 9B of the low pressure reducing valve 9.
[0024]
Reference numeral 11 denotes a branch pipe provided in the valve portion 9A of the low-pressure pressure reducing valve 9. The branch pipe 11 includes a vertical pipe 11A extending vertically upward and downward and a front side substantially perpendicular to the upper side of the vertical pipe 11A. An upper bent tube 11B as an upper connection port bent toward the upper side and a lower bent tube 11C as a lower connection port bent forward at a substantially right angle from the lower side of the vertical tube 11A and extending forward. Yes. Here, the lower bent tube 11C protrudes forward from the upper bent tube 11B.
[0025]
12 is an upper quick joint for low pressure as an upper joint provided by connecting to the upper bent pipe 11B of the branch pipe 11, and 13 is a lower joint provided by connecting to the lower bent pipe 11C of the branch pipe 11. The quick joints 12 and 13 are arranged so as to extend substantially parallel to each other before and after being spaced apart from each other.
[0026]
The quick joints 12 and 13 are connected to hoses from separate nailers (not shown), for example. Here, as shown in FIG. 3, the tip of the lower quick joint 13 of the quick joints 12 and 13 is disposed in front of the tip of the upper quick joint 12 by a dimension d1. Here, the dimension d1 indicates that when connecting a hose to the two quick joints 12 and 13, even if the hose is connected to the upper quick joint 12 first, another hose is connected to the lower quick joint 13 later. The dimension is set such that another hose can be easily connected to the lower quick joint 13 without being disturbed by the hose already connected to the upper quick joint 12.
[0027]
14 is a high pressure reducing valve for reducing the primary pressure compressed air stored in the storage tanks 2 and 3 to a secondary pressure. The high pressure reducing valve 14 is also similar to the low pressure reducing valve 9. 14A and adjustment knob 14B. Here, the high-pressure pressure reducing valve 14 is disposed with an inclination of the axis O 3 -O 3 obliquely forward toward a later-described rapid joint 17, 18.
[0028]
Reference numeral 15 denotes a high-pressure gauge provided on the low-pressure decompression valve 9 via a pipe 15A. The pressure gauge 15 is also compressed air adjusted by the high-pressure decompression valve 14 in substantially the same manner as the low-pressure gauge 10. The secondary pressure is detected and displayed on the display surface 15B. Here, the pressure gauge 15 is disposed on the rear side of the high pressure reducing valve 14. As shown in FIG. 4, the display surface 15B of the pressure gauge 15 has an axis O4-O4 that is substantially parallel to the axis O3-O3 of the adjustment knob 14B of the high-pressure pressure reducing valve 14.
[0029]
Reference numeral 16 denotes a branch pipe provided in the valve portion 14A of the high-pressure pressure reducing valve 14. The branch pipe 16 is constituted by a vertical pipe 16A, an upper bent pipe 16B, and a lower bent pipe 16C in substantially the same manner as the branch pipe 11. ing. Here, the lower bent tube 16C protrudes and extends forward from the upper bent tube 16B.
[0030]
Reference numeral 17 denotes a high-pressure upper quick joint as an upper joint provided by being connected to the upper bent pipe 16B of the branch pipe 16, and 18 is a lower joint provided to be connected to the lower bent pipe 16C of the branch pipe 16. The quick joints 17 and 18 are separated from each other upward and downward, and extend substantially in parallel before and after.
[0031]
The quick joints 17 and 18 are connected to hoses from separate nailers (not shown), for example. Here, as shown in FIG. 4, the tip side of the lower quick joint 18 of the quick joints 17, 18 is arranged in front of the tip side of the upper quick joint 17 by the dimension d 2. Here, the dimension d2 is a dimension that allows the hose to be easily connected to the lower rapid joint 18 when the hose is connected in the order of the upper rapid joint 17 and the lower rapid joint 18 in the same manner as the dimension d1 described above. Is set to Reference numeral 19 denotes a cover detachably mounted on the storage tanks 2 and 3.
[0032]
The tank-integrated compressor 1 according to the present embodiment has the above-described configuration. Next, the operation thereof will be described.
[0033]
First, when power is supplied to the drive motor 8 to drive the drive shaft to rotate, the low pressure side compression mechanism 7B sucks and compresses the outside air and supplies this compressed air to the high pressure side compression mechanism 7C. As a result, the high-pressure side compression mechanism 7C further compresses the compressed air from the low-pressure side compression mechanism 7B into high-pressure compressed air, and stores this high-pressure compressor in the storage tanks 2 and 3. And, for example, a plurality of nailer-side hoses (not shown) are connected to the quick joints 12, 13, 17, 18 of the compression section 7, and an operator such as a carpenter can use these nailers. Use it to drive nails.
[0034]
Here, in the present embodiment, the tip of the lower quick joint 13 of the quick joints 12 and 13 is formed to extend longer than the tip of the upper quick joint 12 by the dimension d1.
[0035]
For this reason, even when an operator first connects a plurality of nailer hoses or the like to the upper rapid joint 12, the lower rapid joint 13 extends longer than the upper rapid joint 12. Etc. can be easily connected to the lower rapid joint 13 and workability can be improved. Similarly, when removing the hose or the like from the lower rapid joint 13 first, the hose or the like can be easily removed.
[0036]
Further, the tip of the lower quick joint 18 is also arranged to extend longer than the tip of the upper quick joint 17 by the dimension d2, so that even if a hose such as a nailer is connected to the upper quick joint 17 first, A hose such as a nail driver can be easily connected to the lower quick joint 18. Similarly, when the hose or the like is first removed from the lower quick joint 18, the hose or the like can be easily removed.
[0037]
Further, since the adjustment knob portion 9B of the low pressure reducing valve 9 is disposed with an inclination of the axis O1-O1 obliquely upward toward the operator on the front side of the compressor 1, the operator can reduce the pressure for the low pressure. The adjustment knob portion 9B can be easily grasped with the hand extending obliquely toward the valve 9, and the operability of the adjustment knob portion 9B can be improved.
[0038]
Further, the adjustment knob portion 14B of the high-pressure pressure reducing valve 14 is disposed with an inclination of the axis O3-O3 obliquely upwardly toward the operator on the front side of the compressor 1, etc. The adjustment knob portion 14B can be easily operated in a state where the hand is extended obliquely toward the valve 14, and the operability of the adjustment knob portion 14B can be improved.
[0039]
Further, in the present embodiment, the display surface 10B of the low pressure pressure gauge 10 is disposed substantially parallel to the axis O1-O1 of the adjustment knob portion 9B of the low pressure reducing valve 9, so that the work is performed on the front side of the compressor 1 or the like. The operator can see the display surface 10B of the pressure gauge 10 disposed obliquely from the front, and can improve workability when viewing the pressure gauge 10.
[0040]
Further, the high pressure gauge 15 is also arranged substantially parallel to the axis O3-O3 of the adjustment knob 14B of the high pressure reducing valve 14, so that the worker working on the front side of the compressor 1 is inclined obliquely. The display surface 15B of the arranged pressure gauge 15 can be seen from the front, and the pressure gauge 15 can be easily seen.
[0041]
In addition, since the quick joints 12 and 13 are arranged so as to extend horizontally in front and back, dust and the like are less likely to enter the quick joints 12 and 13, and the inside of the quick joints 12 and 13 can be kept clean. Furthermore, since the quick joints 17 and 18 are arranged so as to extend in parallel before and after, the insides of the quick joints 17 and 18 can be kept clean.
[0042]
In the embodiment, the case where the low pressure gauge 10 is arranged on the rear side of the low pressure reducing valve 9 is illustrated. However, the present invention is not limited to this. For example, the pressure gauge 10 may be disposed below the low-pressure pressure reducing valve 9 and may be disposed on the left side or the right side. The same applies to the high pressure gauge 15.
[0043]
In the embodiment, the compression unit 7 that forms a horizontally opposed two-stage air compressor is described as an example of the compression unit. However, the present invention is not limited to this, and for example, a single-stage or three-stage or more air compressor may be used as the compression unit, and the arrangement form of the cylinder may be other forms such as a V-type.
[0044]
In the embodiment, the reciprocating type compression unit 7 in which a piston (both not shown) reciprocates in the cylinders of the compression mechanisms 7B and 7C of the compression unit 7 is exemplified. However, the present invention is not limited to this, and may be other types of compression units such as a rotary type and a scroll type.
[0045]
Furthermore, in the embodiment, the tank-integrated compressor 1 in which the two storage tanks 2 and 3 are integrally provided as a compressor has been described as an example. However, the present invention is not limited to this, for example, One storage tank may be provided, or the storage tank may be provided separately.
[0047]
【The invention's effect】
As described above in detail, according to the first aspect of the present invention, the left and right storage tanks are configured by cylindrical tanks arranged in parallel on the left and right, and the left and right storage tanks store air. Compressed air that is mounted on the upper side between the tanks, compresses the air and stores the compressed air in the storage tanks, and the compressed air of the primary pressure stored in the storage tanks provided in the upper part of each storage tank near the front side in the axial direction. Left and right pressure reducing valves for reducing the pressure to the secondary pressure, left and right pressure gauges for displaying the pressure of the secondary pressure reduced by the left and right pressure reducing valves , and the left and right pressure reducing valves Left and right branch pipes connected to each other and having an upper connection port and a lower connection port, and respective connection ports of the left and right branch pipes for taking out compressed air decompressed by the respective pressure reducing valves to the outside each arranged in connection to, on the disposed above each storage tank, away under The left extending substantially parallel to the axial direction of the storage tank, the right two upper quick coupling, is composed of a lower quick couplings, each lower quick couplings, each storage tank from the respective upper quick couplings as well as since the configuration Ru protrude axially forward of, for example, previously connected to an external piping such as the nailing machine in the upper quick coupling, later detaching another external piping of the nailing machine or the like to the lower quick couplings In this case, the external pipe on the upper rapid joint side that has already been connected can be easily attached to and detached from the lower quick joint, and the pipe can be easily attached and detached. The upper quick joint and the lower quick joint are connected to a branch pipe having an upper connection port and a lower connection port and are attached to a pressure reducing valve. each upper quick couplings, can be attached to the lower quick couplings, the worker can enhance the workability when striking a nail.
[0048]
According to a second aspect of the present invention , each of the branch pipes includes a vertical pipe extending upward and downward, and an upper side bent provided with the upper quick joint by bending forward from the upper side of the vertical pipe at a substantially right angle. A lower bent pipe that is bent forward at a substantially right angle from the lower side of the vertical pipe and provided with the lower rapid joint, and the lower bent pipe is further forward than the upper bent pipe. Since it is configured to project, the lower bent pipe provided with the lower quick joint is more than the upper bent pipe provided with the upper quick joint among the branch pipes composed of the vertical pipe, the upper bent pipe and the lower bent pipe. It can be arranged to project forward .
[0049]
According to a third aspect of the present invention , a transport handle extending from the left and right storage tanks is provided between the left and right quick joints, and the grip is connected to a tip of the lower quick joint. also, since the structure is located axially forward side of the said storage tank, a handle for transport, can you to axially disposed front side of the tank than the tip of the lower quick couplings.
[0050]
On the other hand, in the invention of claim 4, since the left and right pressure reducing valves are constituted by a high pressure pressure reducing valve and a low pressure pressure reducing valve having different settable secondary pressures, the primary pressure stored in the storage tank is determined. compressed air, and can you to vacuum different secondary pressure using a high pressure reducing valve and the low pressure reducing valve.
[Brief description of the drawings]
FIG. 1 is an external perspective view showing a tank-integrated compressor according to an embodiment of the present invention.
FIG. 2 is an external perspective view showing a tank-integrated compressor with a cover removed.
3 is a partial front view showing a low-pressure quick joint or the like in FIG. 2;
4 is a partial rear view showing a high-pressure quick joint and the like in FIG. 2. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Compressor 2,3 Storage tank 7 Compression part 7A Crankcase 7B Low pressure side compression mechanism 7C High pressure side compression mechanism 9 Low pressure reducing valve 9A, 14A Valve part 9B, 14B Adjustment knob 10 Low pressure pressure gauge 10B, 15B Display Surface 11, 16 Branch pipe 11B, 16B Upper bent pipe (connection port)
11C , 16C Lower bent pipe (connection port)
12 Upper rapid joint for lower pressure (upper joint)
13 Lower rapid joint for lower pressure (lower joint)
14 Pressure reducing valve for high pressure 15 Pressure gauge for high pressure 17 Upper rapid joint for upper pressure (upper joint)
18 High-pressure lower quick joint (lower joint)

Claims (4)

左,右に並行に配置された円筒状のタンクにより構成され、空気を貯留する左,右2つの貯留タンクと
該左,右の貯留タンクの間の上側に搭載され、空気を圧縮し、前記各貯留タンクに貯える圧縮部と
前記各貯留タンクの軸方向前側寄りの上部に設けられ、前記貯留タンクに貯えられた一次圧の圧縮空気を二次圧に減圧する左,右2つの減圧弁と
該左,右の減圧弁によって減圧された二次圧の圧力を表示する左,右2つの圧力計と
前記左,右の減圧弁にそれぞれ接続され、上側の接続口と下側の接続口とをもった左,右2つの分岐管と、
前記各減圧弁によって減圧された圧縮空気を外部に取出すため該左,右の分岐管の上,下の接続口にそれぞれ接続して設けられ、前記各貯留タンクの上方に配置されて上,下に離間すると共に前記各貯留タンクの軸方向にほぼ平行に延びる左,右2つの上側急速継手下側急速継手と、から構成され、
前記左,右の下側急速継手は、前記左,右の上側急速継手より前記各貯留タンクの軸方向前側に突出して設けたことを特徴とする空気圧縮機。
Consists of cylindrical tanks arranged in parallel on the left and right, two storage tanks on the left and right for storing air ,
Mounted on the upper side between the left and right storage tanks, compresses air , and stores in each of the storage tanks ;
Two left and right pressure reducing valves provided at an upper portion of each storage tank closer to the front side in the axial direction , for reducing the primary pressure compressed air stored in each storage tank to a secondary pressure ;
Two pressure gauges, left and right, for displaying the pressure of the secondary pressure reduced by the left and right pressure reducing valves ;
Two left and right branch pipes connected to the left and right pressure reducing valves, respectively, having an upper connection port and a lower connection port ;
In order to take out the compressed air decompressed by each pressure reducing valve to the outside, the left and right branch pipes are connected to the upper and lower connection ports, respectively, and are arranged above the respective storage tanks. configured the left extending substantially parallel to the axial direction of the storage tank, the right two upper quick coupling, from a lower quick couplings, with spaced,
The left and right lower quick couplings, air compressor, wherein the left and protrudes from the right of the upper quick coupling in the axial direction front side of the respective reservoir tanks.
前記各分岐管は、上,下方向に延びた垂直管と、該垂直管の上側からほぼ直角に前方へと屈曲し前記上側急速継手が設けられる上側屈曲管と、前記垂直管の下側からほぼ直角に前方へと屈曲し前記下側急速継手が設けられる下側屈曲管とから構成され、該下側屈曲管は、前記上側屈曲管よりも前方に突出することを特徴とする請求項1に記載の空気圧縮機。 Each of the branch pipes includes a vertical pipe extending upward and downward, an upper bent pipe that is bent forward at a substantially right angle from an upper side of the vertical pipe, and provided with the upper rapid joint, and from a lower side of the vertical pipe. is composed of a lower side bent pipe bent the lower quick couplings are provided with forwardly at approximately right angles, claim lower side bent tube, you characterized in that projecting forward from the upper bent tube The air compressor according to 1. 前記左,右の急速継手の間には、前記左,右の貯留タンクから延びる運搬用の把手を設け、該把手は、前記下側急速継手の先端よりも、前記貯留タンクの軸方向前側寄りに位置することを特徴とする請求項1または2に記載の空気圧縮機。A transport handle extending from the left and right storage tanks is provided between the left and right quick joints, and the handle is closer to the front side in the axial direction of the storage tank than the tip of the lower quick joint. air compressor according to claim 1 or 2 that you characterized located. 前記左右の減圧弁を、設定可能な二次圧が異なる高圧用減圧弁と低圧用減圧弁とにしたことを特徴とする請求項1,2または3に記載の空気圧縮機。The left and the right of the pressure reducing valve, an air compressor according to claim 1, 2 or 3, characterized in that the secondary pressure can be set has to the different high-pressure reducing valve and the low pressure reducing valve.
JP2002051870A 2002-02-27 2002-02-27 air compressor Expired - Lifetime JP3990166B2 (en)

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JP4650120B2 (en) * 2005-06-24 2011-03-16 日立工機株式会社 Check valve with air plug and compressed air supply system using the same
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