JP3990620B2 - Cab - Google Patents

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JP3990620B2
JP3990620B2 JP2002302668A JP2002302668A JP3990620B2 JP 3990620 B2 JP3990620 B2 JP 3990620B2 JP 2002302668 A JP2002302668 A JP 2002302668A JP 2002302668 A JP2002302668 A JP 2002302668A JP 3990620 B2 JP3990620 B2 JP 3990620B2
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Japan
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outside air
air introduction
cab
filter
duct
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JP2002302668A
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JP2004136757A (en
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昌宏 中山
正訓 林
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新キャタピラー三菱株式会社
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Description

【0001】
【発明の属する技術分野】
本発明は、外気導入ダクトを備えたキャブに関する。
【0002】
【従来の技術】
図4に示されるように、油圧ショベルは、下部走行体11上に上部旋回体12が設けられ、この上部旋回体12上に作業装置13と、オペレータの運転空間を形成するキャブ14とが搭載されている。
【0003】
キャブ14には、キャブ14内の温湿度を調節し換気をするための空気調和機すなわちエアコンディショナユニットが設置されている。この場合、キャブ14内の空気調和機へ外気を導入する外気導入ダクトや、外気を浄化する外気浄化フィルタは、キャブ後部のリヤパネルに取付けられている(例えば、特許文献1参照)。
【0004】
図5および図6に示されるように、現状は、キャブ後部のリヤパネル15に、外気導入エアを浄化する外気浄化フィルタ16を内蔵した外気導入用フィルタボックス17を設け、その外気導入用フィルタボックス17のキャブ室内側と空気調和機18とを外気導入ダクト19にて接続して外気を空気調和機18へ導いている。
【0005】
【特許文献1】
特開平9−290631号公報(第2頁、図1および図2)
【0006】
【発明が解決しようとする課題】
従来の外気導入構造は、外気導入用フィルタボックス17のキャブ内飛出しや、外気導入ダクト19のキャブ内通路スペースなどが大きく、相対的にキャブ14内の有効利用可能なスペースを縮小することになる。
【0007】
例えば、キャブ内オペレータスペース、特に足元スペースをより多く確保するために、オペレータが座るシート21はキャブ後方へ設置することが望ましいが、外気導入ダクト19あるいは外気導入用フィルタボックス17がキャブ14内にあるため、シートレイアウトが思うように取れない。
【0008】
また、外気導入ダクト19の長さが長くなればなるほど、ダクト内空気の通気抵抗が増して、それを補うために送風量を増加しなければならなくなり、結果としてダクト騒音が増加して、オペレータ環境に悪影響を及ぼすことになる。
【0009】
さらに、上部旋回体12にキャブ14を搭載する際は、キャブ内部の狭小スペースで外気導入ダクト19を空気調和機18に接続するなどの作業を伴なうため、キャブ14の搭載作業が容易でない。
【0010】
その上、外気浄化フィルタ16は、多数のねじ22で固定された外気導入用フィルタボックス17の蓋23を開けないとメンテナンスできないので、手数がかかり、メンテナンス作業を容易にできない問題がある。
【0011】
本発明は、このような点に鑑みなされたもので、空気調和機用の外気導入ダクトをキャブ内に設置した場合のスペース上の問題点、環境上の問題点を改善できるキャブを提供することを目的とするものである。さらに、キャブ搭載作業の容易化、外気浄化フィルタのメンテナンス作業の容易化を図ることを目的とするものである。
【0012】
【課題を解決するための手段】
請求項1に記載された発明は、キャブ本体と、キャブ本体に固着され内部に挿通孔を形成した案内筒体と、案内筒体の挿通孔に対向してキャブ本体内で開口された外気導入接続口部を有する空気調和機と、キャブ本体の外部より案内筒体の挿通孔に挿入されて空気調和機の外気導入接続口部に嵌合された差込部を有する外気導入ダクトと、案内筒体に着脱可能に取付けられた固定部材と、外気導入ダクトの差込部に設けられ固定部材と係合する係合部とを具備したキャブであり、外気導入ダクトの差込部をキャブ本体の外部から案内筒体の挿通孔の内部に挿入して、そのまま空気調和機の外気導入接続口部に嵌合することで、外気導入ダクトを外部から容易に接続できるので、従来のようにキャブ本体の内側に外気導入ダクトなどを配設するためのスペースを必要とせず、その分、キャブ本体内の利用可能スペースを広く確保でき、シートレイアウトの容易性、キャブ内空間の有効活用を図れ、また、外気導入ダクトを短くできるため、通気抵抗が少なくなり、空気調和機の送風量を減少でき、ダクト騒音を低減でき、さらに、キャブ本体の搭載にともない、外気導入ダクトの差込部をキャブ本体の外部から挿通孔を通して空気調和機の外気導入接続口部に嵌合することで、外気導入ダクトを外部から容易に接続作業できるので、作業工数が少なくて済むとともに、キャブ搭載の容易化も図れる。さらに、キャブ本体の外部より案内筒体の挿通孔内に挿入されて空気調和機の外気導入接続口部に嵌合された外気導入ダクトの差込部の係合部に対し、案内筒体に取付けられた固定部材を係合させることで、外気導入ダクトの差込部が案内筒体より外れるおそれを確実に防止できるとともに、固定部材の係合を解除するのみで、外気導入ダクトの差込部を案内筒体から引抜くようにしてキャブより容易に外すことができる。
【0013】
請求項2に記載された発明は、請求項1記載のキャブにおいて、案内筒体の外側の開口縁に全周にわたって嵌着され外気導入ダクトと係合された外側のシール部材と、空気調和機の外気導入接続口部の内周面に全周にわたって嵌着され外気導入ダクトの差込部と嵌合された内側のシール部材とを具備したものであり、案内筒体の外側の開口縁に全周にわたって嵌着され外気導入ダクトと係合された外側のシール部材により、案内筒体と外気導入ダクトとの隙間を経た空気移動を防止できるとともに、空気調和機の外気導入接続口部の内周面に全周にわたって嵌着され外気導入ダクトの差込部と嵌合された内側のシール部材により、空気調和機の外気導入接続口部への外気のみの吸込を確保できる。
【0014】
請求項3に記載された発明は、請求項1または2記載のキャブにおける外気導入ダクトが、キャブ本体の外部で差込部とは反対側に開口されたフィルタ収納部を備え、外気導入ダクトのフィルタ収納部に内蔵され空気調和機に吸込まれる外気を浄化する外気浄化フィルタを具備したものであり、空気調和機の外気導入接続口部および案内筒体の挿通孔から差込部を引抜くようにして外気導入ダクトをキャブ本体より外すことで、外気導入ダクトのフィルタ収納部に内蔵された外気浄化フィルタも同時にキャブ本体から容易に外すことができ、外気浄化フィルタのメンテナンス容易化を図れる。
【0015】
請求項4に記載された発明は、請求項3記載のキャブにおける外気導入ダクトが、フィルタ収納部の開口縁の一側に基端を開閉自在に軸支され外気浄化フィルタを外側から押圧するフィルタ押え体と、フィルタ押え体の先端側をフィルタ収納部の開口縁の他側で係脱自在に係止する係止板とを具備したものであり、フィルタ収納部の開口縁の一側に基端を開閉自在に軸支されたフィルタ押え体の先端側を、フィルタ収納部の開口縁の他側の係止板に対し係脱操作するのみで、外気浄化フィルタを外気導入ダクトのフィルタ収納部に対し簡単に着脱でき、外気浄化フィルタの交換などのメンテナンスを容易にできる。
【0016】
【発明の実施の形態】
以下、本発明を図1乃至図3に示された一実施の形態を参照しながら詳細に説明する。
【0017】
図1に示されるように、キャブ本体31の後部に設けられたリヤパネル32は、下部が凹状に形成され、凹部33が設けられている。
【0018】
図2および図3に示されるようにリヤパネル32に角穴34が穿設され、この角穴34に角筒状の案内筒体としての案内ダクト35が嵌着され、全周にわたって施された溶接継手36により固着されている。
【0019】
この案内ダクト35の外側の開口縁には、全周にわたってU形断面のシール部材37が嵌着されている。さらに、この案内ダクト35の内部に挿通孔38が設けられている。
【0020】
一方、この案内ダクト35の内端に対向して、キャブ本体31内に設置された空気調和機としてのエア・コンディショナ・ユニット(以下、これを「エアコンユニット」と称する)41の外気導入接続口部42が配置されている。この外気導入接続口部42の内周面には、全周にわたってシール部材43が嵌着されている。エアコンユニット41は、図3に示されるようにオペレータ・シートの後方下部のキャブフロア上面Fに設置されている。
【0021】
キャブ本体31の外部より案内ダクト35の挿通孔38内に外気導入ダクト44が挿入され、さらに、この外気導入ダクト44は、エアコンユニット41の外気導入接続口部42に差込まれるように嵌合されている。この状態で、外気導入ダクト44の大部分が、前記凹部33の内部に収められている。
【0022】
外気導入ダクト44は、案内ダクト35およびエアコンユニット41の外気導入接続口部42に挿入される角筒状の差込部45と、キャブ本体31の外部で差込部45とは反対側に開口されたフィルタ収納部46とを備えている。
【0023】
差込部45は、図3に示されるように案内ダクト35に挿入される部分45aに対して、段差部45bを介して、エアコンユニット41の外気導入接続口部42に挿入される部分45cが形成されている。
【0024】
差込部45とフィルタ収納部46との間には、図2に示されるように差込部45の一側面をそのまま延長した一側面部47と、この一側面部47に対し後方へ拡開させるように形成された他側面部48とにより、斜め後方へ拡開するように形成された外気導入部49が設けられている。
【0025】
一側面部47の後端部は、他側面部48と平行になるように折曲部51を介して折曲形成され、フィルタ収納部46が角箱形に形成されているとともに、この折曲部51の内側を含む角箱内端部に、複数のフィルタ受け部52が設けられている。
【0026】
そして、これらのフィルタ受け部52により係止されるように、外気導入ダクト44のフィルタ収納部46に、エアコンユニット41に吸込まれる外気を浄化する外気浄化フィルタ53が内蔵されている。
【0027】
また、図3に示されるように案内ダクト35の上面に取付台座54が設けられ、この取付台座54に、固定部材としてのL形に折曲形成された固定プレート55が、固定ねじ56により着脱可能に固定されている。
【0028】
一方、外気導入ダクト44の差込部45の上面には、係合部としての凹溝57が設けられ、この凹溝57に、取付台座54に装着された固定プレート55の先端部が挿入され係合されている。この係合状態では、案内ダクト35に対し外気導入ダクト44の差込部45が位置決めされた固定関係にある。
【0029】
したがって、固定ねじ56を外すか緩めることにより、固定プレート55の先端部を凹溝57から外すと、案内ダクト35より外気導入ダクト44の差込部45を引抜くことが可能となる。
【0030】
また、外気導入ダクト44のフィルタ収納部46の開口側には、外気浄化フィルタ53を外側から押圧する2本の針金状のフィルタ押え体61が設けられている。すなわち、図2に示されるようにフィルタ収納部46の開口縁の一側に、フィルタ押え体61の基端がヒンジ62により開閉自在に軸支され、フィルタ収納部46の開口縁の他側に、フィルタ押え体61の先端側を係脱自在に係止する係止板63が設けられている。
【0031】
フィルタ押え体61は、図2に示されるように中央部にフィルタ収納部46内の外気浄化フィルタ53と接触してこれを押圧する凸状部61aが形成され、図3に示されるように先端部に指先で操作しやすいように円形状に折曲された操作部61bが形成されている。
【0032】
係止板63には、図3に示されるようにフィルタ押え体61が係合されるL形および逆L形の鉤溝64がそれぞれ設けられ、これらの鉤溝64に係合された上下のフィルタ押え体61の先端部を相互に近付ける方向に操作することで、係合状態を解除する。
【0033】
このように、キャブ本体31の外側よりキャブ後部のリヤパネル32を通して外気導入ダクト44をキャブ本体31内のエアコンユニット41の外気導入接続口部42へ差込むことを可能にした案内ダクト35を設置したので、キャブ後部のリヤパネル32に従来のような外気導入用フィルタボックスを設ける必要がないとともに、従来のエアコンユニットへの外気導入ダクトのように、キャブ内に配設する必要もない。
【0034】
さらに、外気導入ダクト44は、この外気導入ダクト44のエアコンユニット41側とは反対側の端部を拡大することで、この外気導入ダクト44内に外気浄化フィルタ53を設置可能とした構造であり、また、案内ダクト35に一体形成された取付台座54から固定プレート55を突出させて、その固定プレート55の先端により外気導入ダクト44の凹溝57を押えることで、外気導入ダクト44が案内ダクト35より外れることのないようにした構造である。
【0035】
次に、この図1乃至図3に示された実施の形態の作用効果を説明する。
【0036】
外気導入ダクト44の差込部45をキャブ本体31の外部から案内ダクト35の挿通孔38内に挿入して、そのままエアコンユニット41の外気導入接続口部42に差込むように嵌合することで、外気導入ダクト44を容易に接続できる。
【0037】
これにより、従来のようにキャブ内に外気導入ダクトなどを配設するためのスペースを必要とせず、その分、キャブ本体31内の利用可能スペースを広く確保でき、シートレイアウトの容易性、キャブ内空間の有効活用を図れる。
【0038】
すなわち、通常、エアコンユニット41は、オペレータ・シートの後方下部のキャブフロア上面F(図3)に設置されており、キャブ内オペレータスペース、特に足元スペースをより多く確保するために、シートはキャブ後方へ設置したいが、従来のように外気導入ダクトあるいは外気導入用フィルタボックスがキャブ内に設置された場合は、これらのスペースが邪魔をしているために、シートレイアウトが思うように取れない。これに対し、図1乃至図3に示されたダクト構造であれば、外気導入用フィルタボックスをキャブ内に設置する必要がないとともに、外気導入ダクト44の大部分がリヤパネル32より外部にあるため、シートレイアウトを比較的自由に設計することが可能である。
【0039】
さらに、従来の外気導入ダクトや外気導入用フィルタボックスのあったスペースに電装部品などを設置してキャブ内空間を有効活用できる。
【0040】
また、外気導入ダクト44を短くできるため、通気抵抗が少なくなり、エアコンユニット41の送風量を減少でき、ダクト騒音を低減できる。
【0041】
特に、外気導入ダクト44の差込部45に対し漸次拡開状の外気導入部49を介し断面積大のフィルタ収納部46が連続的に形成されているので、この断面積大のフィルタ収納部46内に収納された大型の外気浄化フィルタ53により、大量の外気を浄化処理することができ、これもダクト騒音の低減につながる。
【0042】
さらに、上部旋回体12上へのキャブ14の搭載にともない、外気導入ダクト44をキャブ本体31の外部から案内ダクト35を通してエアコンユニット41の外気導入接続口部42に差込むだけで、外気導入ダクト44を外部から容易に接続作業でき、後は補助的な固定プレート55の固定のみでよいから、従来の多数のねじのみによる固定に比べて、作業工数も少なくて済むとともにキャブ搭載の容易化も図れる。
【0043】
その際、キャブ本体31の外部より案内ダクト35の挿通孔38内に挿入されてエアコンユニット41の外気導入接続口部42に嵌合された外気導入ダクト44の凹溝57に対し、案内ダクト35の取付台座54に僅かな固定ねじ56で装着された固定プレート55の先端部を係合させることで、外気導入ダクト44が案内ダクト35より外れるおそれを確実に防止できるとともに、僅かな固定ねじ56を緩めて、外気導入ダクト44の凹溝57に対する固定プレート55の係合を解除するのみで、外気導入ダクト44を案内ダクト35から引抜くようにしてキャブ本体31より容易に外すことができる。
【0044】
また、従来は外気導入用フィルタボックスの蓋を、ねじなどの固定部品を外してから開けて、外気浄化フィルタをメンテナンスしていたが、図示された実施の形態は、固定プレート55から解除された外気導入ダクト44を、エアコンユニット41の外気導入接続口部42および案内ダクト35から引抜くようにしてキャブ本体31より外すことで、外気導入ダクト44のフィルタ収納部46に内蔵された外気浄化フィルタ53も同時にキャブ本体31から容易に外すことができ、外気浄化フィルタ53のメンテナンス容易化につながる。
【0045】
その際、フィルタ収納部46の開口縁の一側にヒンジ62により基端を開閉自在に軸支されたフィルタ押え体61の先端側を、フィルタ収納部46の開口縁の他側の係止板63に対し係脱操作するのみで、外気浄化フィルタ53を外気導入ダクト44のフィルタ収納部46に対し簡単に着脱でき、外気浄化フィルタ53の交換などのメンテナンスを容易にできる。
【0046】
なお、この実施の形態に示されたキャブは、油圧ショベルに適用される場合であるが、他の建設機械、その他の作業機械に適用することも可能である。
【0047】
【発明の効果】
請求項1記載の発明によれば、外気導入ダクトの差込部をキャブ本体の外部から案内筒体の挿通孔の内部に挿入して、そのまま空気調和機の外気導入接続口部に嵌合することで、外気導入ダクトを外部から容易に接続できるので、従来のようにキャブ本体の内側に外気導入ダクトなどを配設するためのスペースを必要とせず、その分、キャブ本体内の利用可能スペースを広く確保でき、シートレイアウトの容易性、キャブ内空間の有効活用を図れ、また、外気導入ダクトを短くできるため、通気抵抗が少なくなり、空気調和機の送風量を減少でき、ダクト騒音を低減でき、さらに、キャブ本体の搭載にともない、外気導入ダクトの差込部をキャブ本体の外部から挿通孔を通して空気調和機の外気導入接続口部に嵌合することで、外気導入ダクトを外部から容易に接続作業できるので、作業工数が少なくて済むとともに、キャブ搭載の容易化も図れる。さらに、キャブ本体の外部より案内筒体の挿通孔内に挿入されて空気調和機の外気導入接続口部に嵌合された外気導入ダクトの差込部の係合部に対し、案内筒体に取付けられた固定部材を係合させることで、外気導入ダクトの差込部が案内筒体より外れるおそれを確実に防止できるとともに、固定部材の係合を解除するのみで、外気導入ダクトの差込部を案内筒体から引抜くようにしてキャブより容易に外すことができる。
【0048】
請求項2記載の発明によれば、案内筒体の外側の開口縁に全周にわたって嵌着され外気導入ダクトと係合された外側のシール部材により、案内筒体と外気導入ダクトとの隙間を経た空気移動を防止できるとともに、空気調和機の外気導入接続口部の内周面に全周にわたって嵌着され外気導入ダクトの差込部と嵌合された内側のシール部材により、空気調和機の外気導入接続口部への外気のみの吸込を確保できる。
【0049】
請求項3記載の発明によれば、空気調和機の外気導入接続口部および挿通孔から引抜くようにして外気導入ダクトをキャブ本体より外すことで、外気導入ダクトのフィルタ収納部に内蔵された外気浄化フィルタも同時にキャブ本体から容易に外すことができ、外気浄化フィルタのメンテナンス容易化を図れる。
【0050】
請求項4記載の発明によれば、フィルタ収納部の開口縁の一側に基端を開閉自在に軸支されたフィルタ押え体の先端側を、フィルタ収納部の開口縁の他側の係止板に対し係脱操作するのみで、外気浄化フィルタを外気導入ダクトのフィルタ収納部に対し簡単に着脱でき、外気浄化フィルタの交換などのメンテナンスを容易にできる。
【図面の簡単な説明】
【図1】 本発明に係るキャブの一実施の形態を示す水平断面図である。
【図2】 同上キャブの要部の水平断面図である。
【図3】 同上キャブの要部の垂直断面図である。
【図4】 油圧ショベルの斜視図である。
【図5】 従来のキャブの外気導入部分を示す側面図である。
【図6】 従来のキャブの外気導入部分を示す正面図である。
【符号の説明】
31 キャブ本体
35 案内筒体としての案内ダクト
38 挿通孔
41 空気調和機としてのエアコンユニット
42 外気導入接続口部
44 外気導入ダクト
45 差込部
46 フィルタ収納部
53 外気浄化フィル
55 固定部材としての固定プレート
57 係合部としての凹溝
61 フィルタ押え体
63 係止板
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cab provided with an outside air introduction duct.
[0002]
[Prior art]
As shown in FIG. 4, the excavator is provided with an upper swing body 12 on a lower traveling body 11, and a work device 13 and a cab 14 that forms an operating space for an operator are mounted on the upper swing body 12. Has been.
[0003]
The cab 14 is provided with an air conditioner, that is, an air conditioner unit, for adjusting the temperature and humidity in the cab 14 for ventilation. In this case, an outside air introduction duct that introduces outside air into the air conditioner in the cab 14 and an outside air purification filter that purifies outside air are attached to the rear panel at the rear of the cab (see, for example, Patent Document 1).
[0004]
As shown in FIG. 5 and FIG. 6, at present, the rear panel 15 at the rear of the cab is provided with an outside air introduction filter box 17 including an outside air purification filter 16 for purifying outside air introduction air, and the outside air introduction filter box 17 is provided. The cab indoor side and the air conditioner 18 are connected by an outside air introduction duct 19 to guide the outside air to the air conditioner 18.
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-290631 (second page, FIGS. 1 and 2)
[0006]
[Problems to be solved by the invention]
In the conventional outside air introduction structure, the outside air introduction filter box 17 jumps out in the cab, the outside air introduction duct 19 has a large passage space in the cab, and the like, and the effective usable space in the cab 14 is relatively reduced. Become.
[0007]
For example, in order to secure more space for the operator in the cab, particularly the foot space, it is desirable to install the seat 21 on which the operator sits behind the cab, but the outside air introduction duct 19 or the outside air introduction filter box 17 is provided in the cab 14. Because there is, the sheet layout cannot be taken as expected.
[0008]
Further, as the length of the outside air introduction duct 19 becomes longer, the ventilation resistance of the air in the duct increases, and the amount of air flow must be increased to compensate for this, resulting in increased duct noise, It will adversely affect the environment.
[0009]
Furthermore, when the cab 14 is mounted on the upper swing body 12, the work of mounting the cab 14 is not easy because it involves work such as connecting the outside air introduction duct 19 to the air conditioner 18 in a narrow space inside the cab. .
[0010]
In addition, since the outside air purification filter 16 cannot be maintained unless the cover 23 of the outside air introduction filter box 17 fixed with a large number of screws 22 is opened, there is a problem that it takes time and maintenance work cannot be facilitated.
[0011]
The present invention has been made in view of the above points, and provides a cab that can improve space problems and environmental problems when an outside air introduction duct for an air conditioner is installed in the cab. It is intended. Furthermore, the object is to facilitate the cab mounting work and the maintenance work of the outside air purification filter.
[0012]
[Means for Solving the Problems]
The invention described in claim 1 includes a cab body, a guide cylinder that is fixed to the cab body and has an insertion hole formed therein, and an outside air introduction that is open in the cab body so as to face the insertion hole of the guide cylinder. An air conditioner having a connection port , an outside air introduction duct having an insertion portion that is inserted into the insertion hole of the guide cylinder from the outside of the cab body and fitted to the outside air connection port of the air conditioner, and a guide A cab having a fixing member detachably attached to a cylindrical body and an engaging portion provided in an insertion portion of an outside air introduction duct and engaging with the fixing member, and the insertion portion of the outside air introduction duct is connected to the cab main body. The outside air introduction duct can be easily connected from the outside by inserting it into the insertion hole of the guide cylinder from the outside and fitting it directly into the outside air introduction connection port of the air conditioner. An outside air introduction duct is installed inside the main unit. It is possible to secure a wide available space in the cab body, and to facilitate the seat layout, to effectively use the space in the cab, and to shorten the outside air introduction duct. is reduced, can decrease the air volume of the air conditioner, it is possible to reduce the duct noise, further, with the mounting of the cab body, the outside air of the air conditioner through the insertion hole of the insertion portion of the outside air inlet duct from the outside of the cab body By fitting into the introduction connection port portion, the outside air introduction duct can be easily connected from the outside, so that the number of work steps can be reduced and the cab can be easily mounted. Furthermore, the guide tube body is inserted into the insertion portion of the outside air introduction duct inserted into the insertion hole of the guide tube body from the outside of the cab body and fitted to the outside air introduction connection port portion of the air conditioner. By engaging the fixed member attached, it is possible to reliably prevent the insertion portion of the outside air introduction duct from coming off the guide cylinder, and the outside air introduction duct can be inserted only by releasing the engagement of the fixation member. The part can be easily removed from the cab by pulling it out of the guide cylinder.
[0013]
According to a second aspect of the present invention, in the cab according to the first aspect, an outer seal member fitted over the entire periphery of the opening edge of the guide cylinder and engaged with the outside air introduction duct, and an air conditioner And an inner seal member fitted over the entire inner peripheral surface of the outside air introduction connection port portion and fitted into the insertion portion of the outside air introduction duct, and is provided at the outer opening edge of the guide cylinder. The outer seal member fitted over the entire circumference and engaged with the outside air introduction duct can prevent air movement through the gap between the guide cylinder and the outside air introduction duct, and can also prevent the inside of the outside air introduction connection port of the air conditioner. the inner sealing member is fitted with the plug portion of the external air introducing duct is fitted over the whole circumference in the circumferential surface, it can be secured suction only outside air into the outside air introduction connections of the air conditioner.
[0014]
The invention described in claim 3, outside air inlet duct in the cab of claim 1, wherein is provided with a filter storing part which is opened on the opposite side to the outside spigot of key catcher blanking body, the outside air introduced It is equipped with an outside air purification filter that is built into the filter storage part of the duct and purifies the outside air that is sucked into the air conditioner, and the insertion part is inserted from the outside air introduction connection port of the air conditioner and the insertion hole of the guide cylinder. By pulling out the outside air introduction duct from the cab body, the outside air purification filter built in the filter storage part of the outside air introduction duct can be easily removed from the cab body at the same time, making maintenance of the outside air purification filter easier. I can plan.
[0015]
The invention described in claim 4 is a filter in which the outside air introduction duct in the cab according to claim 3 is pivotally supported on one side of the opening edge of the filter housing portion so that the base end can be freely opened and closed to press the outside air purification filter from the outside. And a locking plate for detachably locking the front end side of the filter pressing body on the other side of the opening edge of the filter housing portion, and is provided on one side of the opening edge of the filter housing portion. By simply engaging and disengaging the front end side of the filter presser that is pivotably supported at its end with respect to the locking plate on the other side of the opening edge of the filter housing portion, the outside air purification filter is connected to the filter housing portion of the outside air introduction duct. Can be easily attached and detached, and maintenance such as replacement of the outside air purification filter can be facilitated.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to an embodiment shown in FIGS.
[0017]
As shown in FIG. 1, the rear panel 32 provided at the rear portion of the cab main body 31 is formed with a concave portion at the bottom and a concave portion 33.
[0018]
As shown in FIGS. 2 and 3, a square hole 34 is formed in the rear panel 32, and a guide duct 35 serving as a square cylindrical guide cylinder is fitted into the square hole 34. It is fixed by a joint 36.
[0019]
A sealing member 37 having a U-shaped cross section is fitted to the outer opening edge of the guide duct 35 over the entire circumference. Further, an insertion hole 38 is provided inside the guide duct 35.
[0020]
On the other hand, an air conditioner unit (hereinafter referred to as an “air conditioner unit”) 41 as an air conditioner installed in the cab body 31 facing the inner end of the guide duct 35 is connected to the outside air. A mouth 42 is arranged. A seal member 43 is fitted over the entire inner peripheral surface of the outside air introduction connection port 42. As shown in FIG. 3, the air conditioner unit 41 is installed on the upper surface F of the cab floor at the lower rear of the operator seat.
[0021]
An outside air introduction duct 44 is inserted into the insertion hole 38 of the guide duct 35 from the outside of the cab body 31, and this outside air introduction duct 44 is fitted so as to be inserted into the outside air introduction connection port 42 of the air conditioner unit 41. Has been. In this state, most of the outside air introduction duct 44 is accommodated in the recess 33.
[0022]
The outside air introduction duct 44 has a rectangular tube-like insertion portion 45 inserted into the outside air introduction connection port portion 42 of the guide duct 35 and the air conditioner unit 41, and opens to the opposite side of the insertion portion 45 outside the cab body 31. The filter storage part 46 is provided.
[0023]
As shown in FIG. 3, the insertion portion 45 has a portion 45c inserted into the outside air introduction connection port portion 42 of the air conditioner unit 41 through a step portion 45b with respect to a portion 45a inserted into the guide duct 35. Is formed.
[0024]
Between the insertion part 45 and the filter storage part 46, as shown in FIG. 2, one side part 47 that extends one side face of the insertion part 45 as it is and a rear side expansion with respect to the one side part 47 An outside air introduction portion 49 formed so as to expand obliquely rearward is provided by the other side surface portion 48 formed so as to be allowed to flow.
[0025]
The rear end portion of the one side surface portion 47 is bent through a bent portion 51 so as to be parallel to the other side surface portion 48, and the filter storage portion 46 is formed in a square box shape. A plurality of filter receiving portions 52 are provided at the inner end of the square box including the inside of the portion 51.
[0026]
An outside air purification filter 53 for purifying outside air sucked into the air conditioner unit 41 is built in the filter housing portion 46 of the outside air introduction duct 44 so as to be locked by these filter receiving portions 52.
[0027]
As shown in FIG. 3, a mounting base 54 is provided on the upper surface of the guide duct 35, and a fixing plate 55 bent in an L shape as a fixing member is attached to and detached from the mounting base 54 by a fixing screw 56. It is fixed as possible.
[0028]
On the other hand, a concave groove 57 as an engaging portion is provided on the upper surface of the insertion portion 45 of the outside air introduction duct 44, and the distal end portion of the fixing plate 55 attached to the mounting base 54 is inserted into the concave groove 57. Is engaged. In this engaged state, the insertion portion 45 of the outside air introduction duct 44 is fixed with respect to the guide duct 35.
[0029]
Therefore, by removing or loosening the fixing screw 56, the insertion portion 45 of the outside air introduction duct 44 can be pulled out from the guide duct 35 when the tip of the fixing plate 55 is removed from the concave groove 57.
[0030]
Further, two wire-like filter pressers 61 that press the outside air purification filter 53 from the outside are provided on the opening side of the filter housing portion 46 of the outside air introduction duct 44. That is, as shown in FIG. 2, the base end of the filter retainer 61 is pivotally supported by the hinge 62 on one side of the opening edge of the filter housing portion 46 so as to be opened and closed, and on the other side of the opening edge of the filter housing portion 46. A locking plate 63 is provided for detachably locking the distal end side of the filter presser 61.
[0031]
As shown in FIG. 2, the filter retainer 61 is formed with a convex portion 61a in contact with and pressing the outside air purification filter 53 in the filter housing portion 46 at the center, as shown in FIG. An operation portion 61b bent in a circular shape is formed on the portion so that it can be easily operated with a fingertip.
[0032]
As shown in FIG. 3, the locking plate 63 is provided with L-shaped and inverted L-shaped groove grooves 64 to which the filter presser 61 is engaged. The engaged state is released by operating the tip of the filter presser 61 in a direction to bring it closer to each other.
[0033]
As described above, the guide duct 35 that allows the outside air introduction duct 44 to be inserted into the outside air introduction connection port 42 of the air conditioner unit 41 in the cab body 31 from the outside of the cab body 31 through the rear panel 32 at the rear of the cab is installed. Therefore, it is not necessary to provide a conventional outside air introduction filter box on the rear panel 32 at the rear of the cab, and it is not necessary to dispose in the cab like an outside air introduction duct to a conventional air conditioner unit.
[0034]
Furthermore, the outside air introduction duct 44 has a structure in which an outside air purification filter 53 can be installed in the outside air introduction duct 44 by enlarging the end of the outside air introduction duct 44 opposite to the air conditioner unit 41 side. Further, the fixed plate 55 is protruded from the mounting base 54 integrally formed with the guide duct 35, and the outside air introduction duct 44 is pressed by the concave groove 57 of the outside air introduction duct 44 by the front end of the fixed plate 55. The structure is designed so that it will not deviate from 35.
[0035]
Next, the function and effect of the embodiment shown in FIGS. 1 to 3 will be described.
[0036]
By inserting the insertion part 45 of the outside air introduction duct 44 into the insertion hole 38 of the guide duct 35 from the outside of the cab body 31 and fitting it so as to be inserted into the outside air introduction connection part 42 of the air conditioner unit 41 as it is. The outside air introduction duct 44 can be easily connected.
[0037]
As a result, there is no need for a space for arranging an outside air introduction duct or the like in the cab as in the conventional case, and accordingly, a wide available space in the cab body 31 can be secured, the seat layout is easy, Effective use of space.
[0038]
In other words, the air conditioner unit 41 is usually installed on the cab floor upper surface F (FIG. 3) at the lower rear of the operator seat, and the seat is located behind the cab in order to secure more operator space in the cab, particularly foot space. However, if the outside air introduction duct or the outside air introduction filter box is installed in the cab as in the conventional case, the seat layout cannot be taken as expected because these spaces are obstructing. On the other hand, in the duct structure shown in FIGS. 1 to 3, it is not necessary to install the outside air introduction filter box in the cab, and most of the outside air introduction duct 44 is outside the rear panel 32. The sheet layout can be designed relatively freely.
[0039]
Furthermore, the interior space of the cab can be effectively utilized by installing electrical components in the space where the conventional outside air introduction duct or outside air introduction filter box is located.
[0040]
In addition, since the outside air introduction duct 44 can be shortened, the airflow resistance is reduced, the air volume of the air conditioner unit 41 can be reduced, and the duct noise can be reduced.
[0041]
In particular, since the filter housing portion 46 having a large cross-sectional area is continuously formed through the outside air introduction portion 49 having a gradually expanding shape with respect to the insertion portion 45 of the outside air introduction duct 44, this filter housing portion having a large cross-sectional area is formed. A large amount of outside air can be purified by the large outside air purification filter 53 housed in 46, which also leads to reduction of duct noise.
[0042]
Furthermore, as the cab 14 is mounted on the upper swing body 12, the outside air introduction duct 44 is simply inserted from the outside of the cab body 31 through the guide duct 35 into the outside air introduction connection port 42 of the air conditioner unit 41. 44 can be easily connected from the outside, and after that, it is only necessary to fix the auxiliary fixing plate 55. Therefore, compared to the conventional method using only a large number of screws, the number of work steps is reduced and the cab can be easily mounted. I can plan.
[0043]
At this time, the guide duct 35 is inserted into the insertion hole 38 of the guide duct 35 from the outside of the cab body 31 and fitted into the outside air introduction connection port 42 of the air conditioner unit 41 with respect to the concave groove 57 of the outside air introduction duct 44. By engaging the front end of the fixing plate 55 mounted with a small number of fixing screws 56 on the mounting base 54, it is possible to reliably prevent the outside air introduction duct 44 from coming off from the guide duct 35, and a small number of fixing screws 56. Can be easily removed from the cab body 31 by pulling out the outside air introduction duct 44 from the guide duct 35 only by releasing the engagement and releasing the engagement of the fixing plate 55 with the concave groove 57 of the outside air introduction duct 44.
[0044]
Further, conventionally, the cover of the outside air introduction filter box was opened after removing fixed parts such as screws, and the outside air purification filter was maintained, but the illustrated embodiment was released from the fixing plate 55. The outside air purification filter built in the filter housing portion 46 of the outside air introduction duct 44 by removing the outside air introduction duct 44 from the cab body 31 so as to be pulled out of the outside air introduction connection port 42 and the guide duct 35 of the air conditioner unit 41. 53 can be easily removed from the cab body 31 at the same time, leading to easier maintenance of the outside air purification filter 53.
[0045]
At that time, the front end side of the filter presser 61 that is pivotally supported by the hinge 62 so as to be openable and closable on one side of the opening edge of the filter housing portion 46 is connected to the locking plate on the other side of the opening edge of the filter housing portion 46. By simply engaging and disengaging 63, the outside air purification filter 53 can be easily attached to and detached from the filter housing portion 46 of the outside air introduction duct 44, and maintenance such as replacement of the outside air purification filter 53 can be facilitated.
[0046]
Although the cab shown in this embodiment is applied to a hydraulic excavator, it can also be applied to other construction machines and other work machines.
[0047]
【The invention's effect】
According to the first aspect of the present invention, the insertion portion of the outside air introduction duct is inserted into the insertion hole of the guide cylinder from the outside of the cab body, and is directly fitted into the outside air introduction connection port portion of the air conditioner. Therefore, the outside air introduction duct can be easily connected from the outside, so that there is no need for a space for arranging the outside air introduction duct inside the cab body as in the conventional case, and the available space in the cab body accordingly. Can be secured widely, the seat layout is easy, the space inside the cab can be used effectively, and the outside air introduction duct can be shortened, so the ventilation resistance is reduced, the air flow of the air conditioner can be reduced, and the duct noise is reduced. can further, with the mounting of the cab body, by fitting the insertion portion of the outside air introducing duct into the outside air introduction connections of the air conditioner through the insertion hole from the outside of the cab body, the outside air introduction duct Since the can work easily connected from the outside, with less work steps, thereby also facilitating the cab mounting. Furthermore, the guide tube body is inserted into the insertion portion of the outside air introduction duct inserted into the insertion hole of the guide tube body from the outside of the cab body and fitted to the outside air introduction connection port portion of the air conditioner. By engaging the fixed member attached, it is possible to reliably prevent the insertion portion of the outside air introduction duct from coming off the guide cylinder, and the outside air introduction duct can be inserted only by releasing the engagement of the fixation member. The part can be easily removed from the cab by pulling it out of the guide cylinder.
[0048]
According to the second aspect of the present invention, the gap between the guide cylinder and the outside air introduction duct is formed by the outer seal member fitted over the entire periphery of the opening edge of the guide cylinder and engaged with the outside air introduction duct. It is possible to prevent the air movement that has passed, and the inner seal member fitted over the inner peripheral surface of the outside air introduction connection port of the air conditioner and fitted with the insertion portion of the outside air introduction duct, Only the outside air can be sucked into the outside air inlet port .
[0049]
According to the third aspect of the present invention, the outside air introduction duct is removed from the cab body so as to be pulled out from the outside air introduction connection port and the insertion hole of the air conditioner, so that it is incorporated in the filter housing portion of the outside air introduction duct. The outside air purification filter can also be easily removed from the cab body at the same time, and the maintenance of the outside air purification filter can be facilitated.
[0050]
According to the fourth aspect of the present invention, the distal end side of the filter presser that is pivotally supported on one side of the opening edge of the filter housing portion so as to be freely opened and closed is locked to the other side of the opening edge of the filter housing portion. By simply engaging and disengaging the plate, the outside air purification filter can be easily attached to and detached from the filter housing portion of the outside air introduction duct, and maintenance such as replacement of the outside air purification filter can be facilitated.
[Brief description of the drawings]
FIG. 1 is a horizontal sectional view showing an embodiment of a cab according to the present invention.
FIG. 2 is a horizontal sectional view of the main part of the cab.
FIG. 3 is a vertical sectional view of the main part of the cab.
FIG. 4 is a perspective view of a hydraulic excavator.
FIG. 5 is a side view showing an outside air introduction portion of a conventional cab.
FIG. 6 is a front view showing an outside air introduction portion of a conventional cab.
[Explanation of symbols]
31 Cab body
35 Guide duct as guide cylinder
38 Insertion hole
41 Air conditioner unit as an air conditioner
42 Open air inlet port
44 Outside air introduction duct
45 Plug
46 Filter compartment
53 outside air purification filter
55 Fixing plate as fixing member
57 Groove as an engaging part
61 Filter holder
63 Locking plate

Claims (4)

キャブ本体と、
キャブ本体に固着され内部に挿通孔を形成した案内筒体と、
案内筒体の挿通孔に対向してキャブ本体内で開口された外気導入接続口部を有する空気調和機と、
キャブ本体の外部より案内筒体の挿通孔に挿入されて空気調和機の外気導入接続口部に嵌合された差込部を有する外気導入ダクトと
案内筒体に着脱可能に取付けられた固定部材と、
外気導入ダクトの差込部に設けられ固定部材と係合する係合部と
を具備したことを特徴とするキャブ。
The cab body,
A guide cylinder fixed to the cab body and having an insertion hole therein;
An air conditioner having an outside air introduction connection port portion opened in the cab body facing the insertion hole of the guide cylinder ,
An outside air introduction duct having an insertion part inserted into the insertion hole of the guide cylinder from the outside of the cab body and fitted to the outside air introduction connection port part of the air conditioner ,
A fixing member detachably attached to the guide cylinder;
A cab comprising an engaging portion that is provided in an insertion portion of an outside air introduction duct and engages with a fixing member .
案内筒体の外側の開口縁に全周にわたって嵌着され外気導入ダクトと係合された外側のシール部材と、
空気調和機の外気導入接続口部の内周面に全周にわたって嵌着され外気導入ダクトの差込部と嵌合された内側のシール部材と
を具備したことを特徴とする請求項1記載のキャブ。
An outer seal member fitted over the entire periphery of the opening edge of the guide cylinder and engaged with the outside air introduction duct;
The inner seal member fitted to the inner peripheral surface of the outside air introduction connection port portion of the air conditioner over the entire circumference and fitted with the insertion portion of the outside air introduction duct is provided. Cab.
外気導入ダクトは、
ャブ本体の外部で差込部とは反対側に開口されたフィルタ収納部を備え、
外気導入ダクトのフィルタ収納部に内蔵され空気調和機に吸込まれる外気を浄化する外気浄化フィルタ
を具備したことを特徴とする請求項1または2記載のキャブ。
The outside air introduction duct
Key includes a filter storing part which is opened on the opposite side to the outside plug portion catcher blanking body,
The cab according to claim 1 or 2, further comprising an outside air purification filter that is built in a filter housing portion of the outside air introduction duct and purifies outside air sucked into the air conditioner.
外気導入ダクトは、
フィルタ収納部の開口縁の一側に基端を開閉自在に軸支され外気浄化フィルタを外側から押圧するフィルタ押え体と、
フィルタ押え体の先端側をフィルタ収納部の開口縁の他側で係脱自在に係止する係止板と
を具備したことを特徴とする請求項3記載のキャブ。
The outside air introduction duct
A filter presser that is pivotally supported on one side of the opening edge of the filter housing portion so that the base end can be freely opened and closed and presses the outside air purification filter from the outside;
The cab according to claim 3, further comprising: a locking plate that removably locks the front end side of the filter pressing body on the other side of the opening edge of the filter housing portion.
JP2002302668A 2002-10-17 2002-10-17 Cab Expired - Fee Related JP3990620B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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JP5484362B2 (en) * 2011-01-13 2014-05-07 日立建機株式会社 Outside air introduction device for air conditioner for work equipment
JP7148468B2 (en) * 2019-09-05 2022-10-05 株式会社日立建機ティエラ construction machinery
JP2022149898A (en) * 2021-03-25 2022-10-07 ヤンマーホールディングス株式会社 Combine harvester

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