JP3873417B2

JP3873417B2 - Inside / outside air blower unit for vehicle air conditioner

Info

Publication number: JP3873417B2
Application number: JP33727397A
Authority: JP
Inventors: 裕市谷
Original assignee: Denso Corp
Current assignee: Denso Corp
Priority date: 1997-12-08
Filing date: 1997-12-08
Publication date: 2007-01-24
Anticipated expiration: 2017-12-08
Also published as: JPH11170840A

Description

【０００１】
【発明の属する技術分野】
本発明は、車両用空調装置の内外気ユニットにおいて、この内外気送風ユニット内に空気中の塵や埃、花粉等を取り除くフィルター部材が内蔵されたものに関する。
【０００２】
【従来の技術】
従来、上述のような内外気送風ユニットとして、特開平９−１７５１４４号公報に記載されているものがある。この従来装置では、内外気送風ユニット内で、内外気切換ドアと送風用ファンとの間にフィルター部材を設置している。上記フィルター部材は、交換のために内外気送風ユニットから取出可能となっている。具体的な構成は、フィルター部材は、濾過部材とこの濾過部材を囲うように保持する四角状の枠体を有する。
【０００３】
そして、内外気送風ユニットには、フィルター部材を脱着するための挿入孔が形成されており、フィルター部材を内外気送風ユニット内から取り出すには、枠体を上記挿入孔から内外気送風ユニット外部に引き出すようにしている。
また、上記従来装置では、上記濾過部材上にフィルター目を通過しない大きな異物（例えば木の葉）等が堆積しているため、枠体の引出し時に大きな異物が挿入孔の開口縁に引っ掛かり、内外気送風ユニット内に落ち込んでしまうことを防止するために、枠体のうち内外気ユニットへの挿入方向の前方壁（奥側の壁）を他の部分より高くしている。
【０００４】
【発明が解決しようとする課題】
しかしながら、上記従来装置では枠体の奥側の壁を高くしているため、枠体の高さ（厚み）が高くなり、内外気ユニットの体格を大きくするという問題がある。
そこで、本発明は内外気送風ユニットの上下寸法を大きくせずに、フィルター部材取出時において、大きな異物が内外気送風ユニット内に落ちないようにすることを目的とする。
【０００５】
【課題を解決するための手段】
本発明は上記目的を達成するため、以下の技術的手段を採用する。請求項１記載の発明では、フィルター部材（４０）は、異物を除去する濾過部材（４１）と、この濾過部材（４１）を囲うようにして保持する枠体（４２）とからなり、フィルター部材（４０）を抜き出す抜き出し方向の後ろ側において、濾過部材（４１）と枠体（４２）の内壁（４２ｂ）とを所定の間隔を開けて配置して、濾過部材（４１）と内壁（４２ｂ）との間にフィルター部材（４０）の抜き出し時に異物（５１）を収納する異物収納部（５０ａ）を設けたことを特徴としている。
【０００６】
これにより、フィルター部材を引き抜くと、これに伴って異物がフィルター部材を抜き出す抜き出し方向の後ろ側に移動し、最終的には濾過部材と枠体の内壁とを所定の間隔を開けて配置することで構成された異物収納部内に入り込み収納される。
このため、フィルター部材を内外気送風ユニットから完全に引き抜くと、異物収納部により異物を内外気送風ユニットの内部に落とさずに、内外気送風ユニットの外部に取り出すことができる。この結果、異物を内外気送風ユニット内に落とさずに、内外気送風ユニットの上下寸法を大きくせずに済む。
【０００７】
また、請求項２記載の発明では、濾過部材（４１）は、波状に折り曲げられた形状をしており、濾過部材（４１）は波状の波の進行方向がフィルター部材（４０）の抜き出し方向と直交するように配置されることを特徴としている。
ところで、本発明者は、濾過部材を、波状の波の進行方向がフィルター部材の抜き出し方向と同じ方向に配置してみた。そして、実際にフィルター部材を内外気送風ユニットから引き抜いて見ると、フィルター部材が弾性変形したのち弾性復帰することで、濾過部材の上面に乗った異物が車両前方側に飛び散ることが確認できた。
【０００８】
そこで、請求項２記載の発明では、上記進行方向がフィルター部材の抜き出し方向と直交するように配置することで、フィルター部材を引き抜くときに、濾過部材が弾性変形しにくくしたため、異物の飛散を未然に防止できる。
また、請求項１記載の発明では、濾過部材（４１）の下方部位で濾過部材（４１）の外縁には、濾過部材（４１）を枠体（４２）に保持する保持部（４３）が設けられおり、
枠体（４２）の内縁には、内方に延びて保持部（４３）の土台となる土台部（４６）が設けられており、
保持部（４３）は、濾過部材（４１）の空気通過方向の高さより小さくなっており、
フィルター部材（４０）の抜き出し時に異物（５１）を収納する異物収納部（５０ａ）は、保持部（４３）を底面として、この保持部（４３）と内壁（４２ｂ）と濾過部材（４１）とで囲まれて構成されていることを特徴としている。
【０００９】
ところで、本発明では、上記異物収納部を形成するために、枠体に対して小さめの濾過部材を使用して、濾過部材と枠体の内壁との間に空間を形成するようにしても良い。しかし、このようにすると、濾過面積が小さくなったり、内外気送風ユニット内での通路面積が小さくなるという問題がある。
そこで、請求項１記載の発明によれば、枠体の内縁に、濾過部材の保持部の土台となる土台部が設けられており、保持部が異物収納部の底面となるため、保持部のスペースを有効使用することで、異物収納部を構成でき、上述の問題を引き起こさずに済む。
【００１０】
【発明の実施の形態】
以下、本発明の実施形態について説明する。図１に本実施形態における車両用空調装置の内外気送風ユニット１の搭載図を示す。本例の車両用空調装置は、右ハンドル車用のものである。
内外気送風ユニット１は、車両用空調装置の最空気上流部を構成するものである。内外気送風ユニット１は、車室内のうち車両前方側の意匠面をなすインストルメントパネルＰの車両前方側に配置されている。内外気送風ユニット１は、エンジンルーム（Ｅ／Ｇ）と車室内とを区画する鉄板製の仕切り壁２の車両後方側に配置されている。
【００１１】
つまり、内外気送風ユニット１は、仕切り板２とインストルメントパネルＰとの間に配置されている。また、インストルメントパネルＰのうち助手席側、かつ前記内外気送風ユニット１の車両後方側には、内外気送風ユニット１と対向配置されて、物品を収納する容器状の収納部材（以下、グローボックス２０）が設けられている。
【００１２】
グローボックス２０は、インストルメントパネルＰに回動可能に支持された回動軸２０ｂにて、図１中矢印Ｃ方向に回動するようになっている。これにより、グローボックス２０の開閉が行える。
内外気送風ユニット１は、車室内への空気流路をなす空調ケース３を有する。空調ケース３は、例えばポリプロピレン等の樹脂材にて形成されている。空調ケース３は、流路がスクロール状となるスクロールケース部３ａを有する。スクロールケース部３ａ内には、車室内への空気流を発生する送風用ファン６が配置されている。送風用ファン６は、本例では遠心式多翼ファン（シロッコファン）を用いている。送風用ファン６は、回転軸線方向が上下方向を向くように配置されている。送風用ファン６は、図１中矢印Ａで示すように、空気を軸線方向（上下方向）の上方から吸い込む。
【００１３】
つまり、送風用ファン６は、内外気送風ユニット１のうち車両前方部位で、車両幅方向に空気を温調ユニット（図示しない）に吹き出すように配置されている。なお、温調ユニットには、周知のエバポレータ、ヒータコア、エアミックスドア等が収納されている。
送風用ファン６は、樹脂性のファン６ａと、このファン６ａを駆動する駆動手段である電動モータ６ｂとを有する。ファン６ａは、複数のファンブレードが円環状に配置された周知のものである。電動モータ６ｂは、下方から上方に向かってファン６ａの吸込口２８から挿入されている。電動モータ６ｂは、図示しない取り付けステーにてスクロールケース部３ａの外壁面（下面）に取り付けられている。
【００１４】
内外気送風ユニット１の上方部位で、空調ケース２は内気導入口２６と外気導入口２２とを有する。内気導入口２６は、空調ケース２内に内気を導入するための開口部であり、外気導入口２２は、空調ケース２内に外気を導入するための開口部である。外気導入口２２は、図１に示すように仕切り壁２の上方部位に開口した外気取入口２３と、ダクト２４にて連通している。内気導入口２６は、インストルメントパネルＰ内の上方部位に開口している。なお、ダクト２４を用いずに、そのまま外気導入口２２が外気取入口２３と連通しても良い。
【００１５】
これら外気導入口２２および内気導入口２６は、送風用ファン６の上方部位に形成されており、開閉部材である内外気切換ドア２５にて選択的に切り換えられるようになっている。
内外気送風ユニット１内で、内気導入口２６と送風用ファン６との間には、例えば外気導入口２０からの外気とともに侵入する花粉等の異物を除去するフィルター部材４０が設けられている。言い換えると、上記フィルター部材４０の下方には、図１示すように送風用ファン６が配置されている。フィルター部材４０は、空調ケース２内から略水平方向に抜き出し自在となっている。以下、このフィルター部材４０の詳細を先ず図２を用いて説明する。
【００１６】
図２は、フィルター部材４０の構造および内外気送風ユニット１への取り付け構造を表す図である。なお、図２は、フィルター部材４０を空調ケース２から抜き出すために、上記グローボックス２０をインストルメントパネルＰから取り外した状態の図である。内外気送風ユニット１（空調ケース２）には、図２に示すように車両後方側部位にフィルター部材４０を抜き出しする開口部３０が形成されている。
【００１７】
フィルター部材４０は、図２に示すように上記花粉等の異物を除去する濾過部材４１と、この濾過部材４１を囲うようにして保持する枠体４２とからなる。図３に濾過部材４１の上面図、図４には図３中Ｂ−Ｂ断面図を示す。図５に図３中Ｃ−Ｃ断面図を示す。
濾過部材４１は、本例ではポリエステル（Ｉ−ＰＥＴ）を発泡させて矩形状に形成されており、弾性変形可能に形成されている。濾過部材４１は、図２〜図４に示すように波状に折り曲げられた形状の濾過部４４を有する。濾過部４４は、濾過部材４１のうち実際に空気中の異物を除去する部分である。濾過部４４は、大きく見れば図４、図５に示すように袋状に形成されている。
【００１８】
濾過部材４１が空調ケース２内に装着された状態で、濾過部材４１の下方部位の外縁の全周には、図２〜図４に示すように内方に延びて濾過部材４１を枠体４２に保持する保持部４３が設けられている。保持部４３は、濾過部材４１と一体成形されている。具体的には、保持部４３は濾過部材４１の外周部を押しつぶして固められて形成されており、上記濾過部４４の空気通過方向の高さより十分小さく（薄く）なっている。
【００１９】
上記枠体４２は、図２に示すようにポリプロピレン等の樹脂にて矩形の枠状に形成されている。図６に図２中Ｄ方向から見た上面図、図７に図６中下方から上方に向けて見た図、図８に図６中Ｆ−Ｆ断面図、図９に図６中Ｇ矢視図を示す。
枠体４２には、図２、図６に示すように底部に格子状の格子部４５が一体形成されている。なお、格子部４５を格子状としたのは、上記濾過部４２を通過した空気を送風用ファン６に吸い込ませるためである。格子部４５は、上記濾過部材４１の形状を保持する保持機能および土台機能を果たす。
【００２０】
枠体４２のうち下方部位における内縁全域には、図２、図６、図１０に示すように内方に突出した土台縁部４６（土台部）が一体成形されている。土台縁部４６は、上記保持部４３の土台となる部分である。
また、枠体４２には、上記保持部４３と係合する係合部４７が一体形成されている。係合部４７は、図８、図１１に示すように枠体４２の壁部４２ａのうち内壁４２ｂ（図１１）側に一体形成されている。
係合部４７は、図８、図１１に示すように土台縁部４６側を底辺とした三角形状に形成されている。係合部４７は、図８に示すように土台縁部４６と所定間隔ａ開けて形成されており、この所定間隔ａに上記保持部４３が図１１に示すように入り込む。
係合部４７は、図６、図１０に示すように枠体４２の引き抜き方向の前方側に２つ、後方側に２つ形成されれている。なお、上記土台縁部４６のうち係合部４７に対応する部分は途切れているが、これは枠体４２を樹脂成形する際の型抜き上のためである。
【００２１】
枠体４２のうち車両後方側に位置する壁部４２ａは、内外気送風ユニット１の外壁を構成する部分であり、枠体４２を空調ケース２から引き抜く際の取っ手にもなる。具体的には、図２〜図６に示すように上記壁４２ａの車両幅方向の両側には、取っ手部４８が一体成形されている。取っ手部４８は、図９に示すように洗濯ばさみのような構成となっており、車両後方側には一対の取っ手４８ａ形成されており、車両前方側には一対の挟み部４８ｂが形成されている。空調ケース２の外壁には、図２に示すように挟み部４８ｂに挟み込まれる挟み受け部４９が一体成形されている。
【００２２】
次に、上記濾過部材４１の枠体４２への組み付け方法について説明する。
先ず、図２中濾過部材４１を枠体４２上に配置し、上方から下方に押し込む。つまり、枠体４２の囲い面積および形状は、上記濾過部材４１のそれとほぼ同様であるため、濾過材４１は枠体４２内に入り込む。しかし、枠体４２内には、上述の三角形状の係合部４７があるため、この係合部４７によって自然には濾過部材４１は枠体４２内には入り込まない。
【００２３】
そこで、濾過部材４１を下方に押し込む。すると、係合部４７の傾斜面によって濾過部材４１がスムーズに押し込まれ、最後まで押し込むと、濾過部材４１の保持部４３が変形することで、係合部４７の下側に入りこむ。これにより、保持部４３は土台縁部４６を土台として配置され、係合部４７により抜け止めされて、濾過部材４１は、枠体４２に取り付けられる。この状態を図１０、図１１に示す。図２、図１０に示すように濾過部材４１は波状の波の進行方向が枠体４２の抜き出し方向と直交するように配置される。
【００２４】
そして、本例では、このように濾過部材４１が枠体４２に取り付けられると、壁部４２ａの内壁４２ｂと濾過部材４１との間に、フィルター部材４０の抜き出し時に、比較的大きな異物を収納する異物収納部５０ａが形成される。
以下、この異物収納部５０について図１０、図１１を用いて説明する。図１１は図９のＨ−Ｈ断面図である。異物収納部５０ａは、枠体４２のうちフィルター部材４０を抜き出す抜き出し方向の後ろ側全域において、濾過部材４１と枠体４２の壁部４２ａの内壁４２ｂ（４２ａの内側面）とが所定の間隔を開けて配置されることで形成されている。具体的には、異物収納部５０ａは、図１１に示すように上記保持部４３を底面として、この保持部４３と内壁４２ｂと濾過部材４１（濾過部４４）とで囲まれて構成されている。
【００２５】
また、このような異物収納部５０ａは、上記抜き出し方向の前方側全域にも設けられており、図１０に示すように異物収納部５０ｂが形成される。さらにこのような異物収納部５０ａは、本例では、枠体４２の全内壁と濾過部材４１との間に全て設けられて、図１０中左右方向の異物収納部を５０ｃとする。
次に上記濾過部材４１が枠体４２に取り付けられたのち、フィルター部材４０を内外気送風ユニット１内への脱着方法について説明する。に異物収納部５０ａ〜５０ｃの機能について説明する。
【００２６】
先ず、フィルター部材４０を内外気送風ユニット１内に装着する場合は、図２中矢印で示すように開口部３０からフィルター部材４０を挿入していき、ある程度押し込むと、一対の挟み部４８ｂの間に挟み係合部４９が位置し、さらに枠体４２を押し込むと、この押し込み力により一対の挟み部４８ｂが弾性変形して開く。この後さらに枠体４２を押し込むと、挟み部４８ｂが弾性復帰して、挟み部４８ｂが挟み受け部４９と引っ掛かるように係合する。これにより、フィルター部材４０が内外気送風ユニット１内に装着され、挟み部４８ｂと挟み受け部４９とでぬけどめされる。
【００２７】
なお、本例では図示されていないが、実際には内外気送風ユニット１内には、このようなフィルター部材４０の挿入をガイドする２列の傾斜部が形成されている。そして、フィルター部材４０を開口部３０から内外気送風ユニット１内に挿入すると、上記傾斜面によってフィルター部材４０の挿入先端側が上方に移動し、フィルター部材４０が挿入先端側が後方側より高い所に位置する傾斜状態で挿入される。そして、このように挿入すると、最終的には内外気送風ユニット１の車両前方側の内壁に当接する。これにより、フィルター部材４０の車両前方側において、上下位置の位置決めがなされ、これに合わせて若干上記挟み部４８ａを上に持ち上げるようにしてから、挟み受け部４９にはめ込む。
【００２８】
このようにフィルター部材４０が内外気送風ユニット１内に装着され、図１に示す取り付け状態となる。そして、フィルター部材４０には、上方からの内気もしくは外気が通過するのであるが、外気中には図１中５１で示す葉っぱ等が含まれており、この葉っぱはフィルター部材４０（濾過部４４）を通過せずにフィルター部材４０の上方に堆積する。
【００２９】
そして、使用者はこのような状態を知らずに、濾過部材４１を交換するために、フィルター部材４０は、助手席側にて車両後方略水平方向に引き抜くことで、空調ケース２から引き抜かれる。具体的には、一対の取っ手４８ａが近づくように押し込む。これにより、一対の挟み部４８ｂが開き、挟み部４８ａと挟み受け部４８ｂとの係合が解除されて、この状態で枠体４２を車両後方側に引き抜く。
【００３０】
すると、上述した場合と逆にフィルター部材４０は、上記傾斜面によってフィルター部材４０の挿入先端側が上方に移動し、フィルター部材４０が挿入先端側が下方側より高い所に位置する傾斜状態となる。これにより、開口部３０の上端縁３０ａと濾過部材４１の上面との間隔が大きくなり、フィルター部材４０の上面に堆積した異物が上記上端縁と干渉しににくなり、異物が内外気送風ユニット１内に落ちにくくなる。
【００３１】
ここで、上述のような大きな異物である葉っぱ５１は、フィルター部材４０を引き抜くと、葉っぱ５１と上記開口縁３０ａとが干渉して、フィルター部材４０を引き抜くと、これに伴って葉っぱ５１が車両前方側に移動する。そして、移動した葉っぱ５１は、最終的には上記異物収納部５０ａ内に入り込み収納される。このため、フィルター部材４０を内外気送風ユニット１から完全に引き抜くと、異物収納部５０ａにより葉っぱ５１を内外気送風ユニット１の内部に落とさずに、内外気送風ユニット１の外部に取り出すことができる。
【００３２】
このように本発明では、上記従来装置のように枠体４２の一辺を高くせずに、確実に大きな異物を内外気送風ユニット１内に落とさずに、さらには内外気送風ユニット１の上下寸法を大きくせずに済む。
また、本例では、上述したように濾過部材４１を、波状の波の進行方向がフィルター部材４０の抜き出し方向と直交するように配置した。これにより、以下のような効果がある。本発明者は、濾過部材４１を、波状の波の進行方向がフィルター部材４０の抜き出し方向と同じ方向に配置してみた。そして、実際にフィルター部材４０を内外気送風ユニット１から引き抜いて見ると、葉っぱ５１が開口縁３０ａとに挟まる。このように異物が詰まった状態でさらにフィルター部材４０を引き抜こうとすると、例えば濾過部４４が波の進行方向に弾性変形したのち弾性復帰することで、濾過部４４の上面に乗った他の異物が車両前方側に飛び散ることが確認できた。このため、本例では、フィルター部材４０を引き抜くときに、波状の濾過部４４が弾性変形しにくくするために、上記進行方向がフィルター部材４０の抜き出し方向と直交するように配置した。これにより、異物の飛散を未然に防止できる。
【００３３】
また、本発明では、上記異物収納部５０ａ〜５０ｃを形成するために、枠体４２に対して小さめの濾過部材４１を使用して、濾過部材４１と枠体４２の内壁との間に空間を形成するようにしても良い。しかし、このようにすると、濾過面積が小さくなってり、内外気送風ユニット１内での通路面積が小さくなるという問題がある。そこで、本例では、枠体の内縁に設けられ、保持部の土台となる土台部が設けられており、保持部４３が異物収納部５０ａ〜５０ｃの底面となり、濾過部４４を枠体４２に保持するために必要な保持部４３のスペースを有効利用することで、異物収納部５０ａ〜５０ｃを構成でき、上述の問題を引き起こさずに済む。
【００３４】
また、本例では、異物収納部５０ａとは異なる場所に異物収納部５０ｂを形成したため、さらに大きな異物を収納する収納スペースを大きくでき、さらに異物を内外気送風ユニット１内に落とさずに済む。また、本例ではさらに異物収納部５０ｃが形成されて、異物収納部が枠体４２の全内壁と濾過部４４との間に全て設けられているため、格段に異物を内外気送風ユニット１内に落とさずに済む。
【００３５】
（変形例）
上記実施形態では、枠体４２の内壁全域に異物収納部を形成したが、少なくとも異物収納部５０ａがあれば良い。
また、上記各実施形態ではフィルター部材４０の引出し位置は、グローボックス２０の車両前方側であったが、どのような位置から引き抜いても良い。さらには車両幅方向に引き抜いても良い。
【００３６】
また、濾過部材４１の外周部にウレタンフォーム等のパッキンをはりつけ、このパッキンを圧縮させることで、濾過部材４１を枠体４２内に保持する構成として、このパッキンの板厚を濾過部材４１の厚みより小さくすることで、異物収納部５０ａ〜５０ｃを形成しても良い。
【図面の簡単な説明】
【図１】本発明の内外気送風ユニット１の車両搭載図である。
【図２】本発明の内外気送風ユニット１の車両搭載図である。
【図３】上記実施形態における濾過部材の上面図である。
【図４】図３中Ｂ─Ｂ断面図である。
【図５】図３中Ｃ─Ｃ断面図である。
【図６】上記実施形態における枠体担体の上面図である。
【図７】図６中下方かた上方に向けて見た図である。
【図８】図６中Ｆ−Ｆ断面図である。
【図９】図６中Ｇ矢視図である。
【図１０】上記実施形態において、濾過部材４１と枠体４２とが組み付けられた状態における上面図である。
【図１１】図１０中Ｈ−Ｈ断面図である。
【符号の説明】
３…空調ケース、６…送風用ファン、２２…外気導入口、
４０…フィルター部材、４１…濾過部材、４２…枠体、４２ｂ…内壁、
５０ａ〜５０ｃ…異物収納部，５１…葉っぱ（異物）。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an inside / outside air unit of a vehicle air conditioner in which a filter member for removing dust, dust, pollen and the like in the air is incorporated in the inside / outside air blowing unit.
[0002]
[Prior art]
Conventionally, as an inside / outside air blowing unit as described above, there is one described in JP-A-9-175144. In this conventional apparatus, a filter member is installed between the inside / outside air switching door and the blowing fan in the inside / outside air blowing unit. The filter member can be taken out from the inside / outside air blowing unit for replacement. Specifically, the filter member has a filtering member and a rectangular frame that holds the filtering member so as to surround the filtering member.
[0003]
An insertion hole for removing the filter member is formed in the inside / outside air blowing unit, and in order to take out the filter member from the inside / outside air blowing unit, the frame body is moved from the insertion hole to the outside of the inside / outside air blowing unit. I try to pull it out.
Further, in the conventional apparatus, large foreign matters (for example, leaves) that do not pass through the filter eyes are accumulated on the filtering member, so that large foreign matters are caught on the opening edge of the insertion hole when the frame body is pulled out, and the inside / outside air blowing In order to prevent falling into the unit, the front wall (back wall) in the direction of insertion into the inside / outside air unit in the frame is made higher than the other parts.
[0004]
[Problems to be solved by the invention]
However, in the conventional apparatus, since the wall on the back side of the frame is made high, there is a problem that the height (thickness) of the frame becomes high and the size of the inside / outside air unit becomes large.
Accordingly, an object of the present invention is to prevent a large foreign matter from falling into the inside / outside air blowing unit when the filter member is taken out without increasing the vertical dimension of the inside / outside air blowing unit.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the present invention employs the following technical means. In the first aspect of the invention, the filter member (40) includes a filter member (41) for removing foreign matter and a frame (42) that holds the filter member (41) so as to surround the filter member (41). On the rear side in the extracting direction for extracting (40), the filtering member (41) and the inner wall (42b) of the frame (42) are arranged at a predetermined interval, and the filtering member (41) and the inner wall (42b) are arranged. A foreign substance storage part (50a) for storing the foreign substance (51) when the filter member (40) is extracted is provided between the first and second filter members (40).
[0006]
As a result, when the filter member is pulled out, the foreign matter moves to the rear side in the extraction direction in which the filter member is pulled out, and finally, the filtering member and the inner wall of the frame body are arranged with a predetermined gap therebetween. It enters and is stored in the foreign matter storage section constituted by
For this reason, when the filter member is completely pulled out from the inside / outside air blower unit, the foreign matter can be taken out of the inside / outside air blower unit without dropping the foreign matter into the inside / outside air blower unit. As a result, it is not necessary to increase the vertical dimension of the inside / outside air blowing unit without dropping foreign matter into the inside / outside air blowing unit.
[0007]
Further, in the invention according to claim 2 , the filtering member (41) has a wave-like shape, and the filtering member (41) has a direction in which the wave-like wave travels as an extraction direction of the filter member (40). It is characterized by being arranged orthogonally.
By the way, this inventor tried arrange | positioning the filtration member in the same direction as the extraction direction of a filter member in the advancing direction of a wavy wave. Then, when the filter member was actually pulled out from the inside / outside air blowing unit, it was confirmed that the foreign matter riding on the upper surface of the filter member was scattered to the front side of the vehicle by elastically returning after the filter member was elastically deformed.
[0008]
Therefore, in the invention according to claim 2 , the filter member is hardly elastically deformed when the filter member is pulled out by arranging the traveling direction so as to be orthogonal to the extraction direction of the filter member. Can be prevented.
Further, in the first aspect of the present invention, filtration on the outer edge of the filter member in the lower portion of the over member (41) (41), the holding portion for holding the filter member (41) to the frame (42) (43) Provided,
On the inner edge of the frame body (42), a base part (46) is provided which extends inward and becomes the base of the holding part (43).
The holding part (43) is smaller than the height of the filtration member (41) in the air passage direction,
The foreign substance storage part (50a) for storing the foreign substance (51) when the filter member (40) is withdrawn has the holding part (43) as a bottom surface, the holding part (43), the inner wall (42b), the filtration member (41), It is characterized by being surrounded by.
[0009]
By the way, in this invention, in order to form the said foreign material storage part, you may make it form a space between a filtration member and the inner wall of a frame using a small filtration member with respect to a frame. . However, if it does in this way, there exists a problem that a filtration area becomes small or a channel | path area in an inside / outside air ventilation unit becomes small.
Therefore, according to the first aspect of the present invention, since the base portion serving as the base of the holding portion of the filter member is provided on the inner edge of the frame body, and the holding portion serves as the bottom surface of the foreign matter storage portion, By effectively using the space, the foreign matter storage unit can be configured, and the above-described problems can be avoided.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described. FIG. 1 shows a mounting diagram of an inside / outside air blower unit 1 of a vehicle air conditioner in the present embodiment. The vehicle air conditioner of this example is for a right-hand drive vehicle.
The inside / outside air blowing unit 1 constitutes the most air upstream portion of the vehicle air conditioner. The inside / outside air blowing unit 1 is disposed on the vehicle front side of the instrument panel P that forms the design surface on the vehicle front side in the vehicle interior. The inside / outside air blowing unit 1 is disposed on the vehicle rear side of a partition wall 2 made of iron plate that partitions the engine room (E / G) and the vehicle interior.
[0011]
That is, the inside / outside air blowing unit 1 is disposed between the partition plate 2 and the instrument panel P. Further, a container-like storage member (hereinafter referred to as “glow”) that is disposed on the passenger seat side of the instrument panel P and on the vehicle rear side of the inside / outside air blowing unit 1 so as to face the inside / outside air blowing unit 1 and stores articles. A box 20) is provided.
[0012]
The glow box 20 is rotated in the direction of arrow C in FIG. 1 by a rotation shaft 20b rotatably supported by the instrument panel P. Thereby, the glow box 20 can be opened and closed.
The inside / outside air blowing unit 1 has an air conditioning case 3 that forms an air flow path into the vehicle interior. The air conditioning case 3 is formed of a resin material such as polypropylene, for example. The air conditioning case 3 has a scroll case portion 3a in which the flow path has a scroll shape. A fan 6 for blowing air that generates an air flow into the vehicle compartment is disposed in the scroll case portion 3a. The blower fan 6 uses a centrifugal multiblade fan (sirocco fan) in this example. The fan 6 for ventilation is arrange | positioned so that a rotating shaft direction may face an up-down direction. The blower fan 6 sucks air from above in the axial direction (vertical direction) as indicated by an arrow A in FIG.
[0013]
That is, the fan 6 for ventilation is arrange | positioned so that air may be blown off to the temperature control unit (not shown) in the vehicle width direction in the vehicle front part among the inside / outside air ventilation unit 1. The temperature control unit houses a known evaporator, heater core, air mix door, and the like.
The blower fan 6 includes a resinous fan 6a and an electric motor 6b that is a driving means for driving the fan 6a. The fan 6a is a known fan in which a plurality of fan blades are arranged in an annular shape. The electric motor 6b is inserted from the suction port 28 of the fan 6a from below to above. The electric motor 6b is attached to the outer wall surface (lower surface) of the scroll case portion 3a by an attachment stay (not shown).
[0014]
In the upper part of the inside / outside air blowing unit 1, the air conditioning case 2 has an inside air inlet 26 and an outside air inlet 22. The inside air introduction port 26 is an opening for introducing inside air into the air conditioning case 2, and the outside air introduction port 22 is an opening for introducing outside air into the air conditioning case 2. As shown in FIG. 1, the outside air inlet 22 communicates with an outside air inlet 23 that opens at an upper portion of the partition wall 2 through a duct 24. The inside air inlet 26 opens at an upper part in the instrument panel P. The outside air inlet 22 may communicate with the outside air inlet 23 as it is without using the duct 24.
[0015]
The outside air introduction port 22 and the inside air introduction port 26 are formed in an upper portion of the blower fan 6 and are selectively switched by an inside / outside air switching door 25 which is an opening / closing member.
In the inside / outside air blowing unit 1, a filter member 40 is provided between the inside air introduction port 26 and the blowing fan 6 to remove foreign matters such as pollen that enter with outside air from the outside air introduction port 20. In other words, the blower fan 6 is disposed below the filter member 40 as shown in FIG. The filter member 40 can be extracted from the air conditioning case 2 in a substantially horizontal direction. Hereinafter, details of the filter member 40 will be described with reference to FIG.
[0016]
FIG. 2 is a diagram illustrating the structure of the filter member 40 and the structure for attaching the filter member 40 to the inside / outside air blowing unit 1. FIG. 2 is a view showing a state in which the glow box 20 is removed from the instrument panel P in order to extract the filter member 40 from the air conditioning case 2. In the inside / outside air blower unit 1 (air conditioning case 2), as shown in FIG. 2, an opening 30 for extracting the filter member 40 is formed in a rear part of the vehicle.
[0017]
As shown in FIG. 2, the filter member 40 includes a filtering member 41 that removes foreign matters such as pollen and a frame body 42 that holds the filtering member 41 so as to surround the filtering member 41. 3 is a top view of the filter member 41, and FIG. 4 is a cross-sectional view taken along the line BB in FIG. FIG. 5 is a cross-sectional view taken along the line CC in FIG.
In this example, the filtering member 41 is formed in a rectangular shape by foaming polyester (I-PET), and is formed to be elastically deformable. The filter member 41 has a filter part 44 that is bent into a wave shape as shown in FIGS. The filtration part 44 is a part which removes the foreign material in the air actually among the filtration members 41. The filter part 44 is formed in a bag shape as shown in FIGS.
[0018]
In a state where the filtering member 41 is mounted in the air conditioning case 2, the entire periphery of the outer edge of the lower part of the filtering member 41 extends inward as shown in FIGS. A holding portion 43 is provided for holding. The holding part 43 is integrally formed with the filtering member 41. Specifically, the holding portion 43 is formed by crushing and solidifying the outer peripheral portion of the filtering member 41, and is sufficiently smaller (thinner) than the height of the filtering portion 44 in the air passage direction.
[0019]
As shown in FIG. 2, the frame body 42 is formed in a rectangular frame shape with a resin such as polypropylene. 6 is a top view seen from the direction D in FIG. 2, FIG. 7 is a view seen from the lower side to the upper side in FIG. 6, FIG. 8 is a cross-sectional view taken along the line FF in FIG. A view is shown.
As shown in FIGS. 2 and 6, a lattice-like lattice portion 45 is integrally formed on the bottom of the frame body 42. The reason why the lattice portion 45 is lattice-shaped is to allow the air that has passed through the filtering portion 42 to be sucked into the blower fan 6. The lattice portion 45 performs a holding function and a base function for holding the shape of the filtering member 41.
[0020]
The inner edge throughout the lower portion of the frame 42, FIG. 2, FIG. 6, the base edge 46 which projects inwardly as shown in FIG. 10 (base portion) is integrally molded. The base edge portion 46 is a portion that becomes a base of the holding portion 43.
The frame body 42 is integrally formed with an engaging portion 47 that engages with the holding portion 43. As shown in FIGS . 8 and 11 , the engaging portion 47 is integrally formed on the inner wall 42 b (FIG. 11) side of the wall portion 42 a of the frame body 42.
As shown in FIGS . 8 and 11 , the engaging portion 47 is formed in a triangular shape with the base edge 46 side as a base. As shown in FIG. 8, the engaging portion 47 is formed at a predetermined interval a from the base edge portion 46, and the holding portion 43 enters the predetermined interval a as shown in FIG .
As shown in FIGS . 6 and 10 , two engaging portions 47 are formed on the front side and two on the rear side in the drawing direction of the frame body 42. In addition, although the part corresponding to the engaging part 47 among the said base edge parts 46 has interrupted, this is for the die cutting at the time of resin-molding the frame 42. FIG.
[0021]
The wall portion 42 a located on the vehicle rear side of the frame body 42 is a portion constituting the outer wall of the inside / outside air blower unit 1, and also serves as a handle when the frame body 42 is pulled out from the air conditioning case 2. Specifically, as shown in FIGS. 2 to 6, handle portions 48 are integrally formed on both sides of the wall 42 a in the vehicle width direction. As shown in FIG. 9, the handle portion 48 has a structure like a clothespin. A pair of handles 48a are formed on the vehicle rear side, and a pair of clip portions 48b are formed on the vehicle front side. Has been. On the outer wall of the air conditioning case 2, as shown in FIG. 2, a sandwich receiving portion 49 that is sandwiched by the sandwiching portion 48 b is integrally formed.
[0022]
Next, a method for assembling the filtering member 41 to the frame body 42 will be described.
First, the filter member 41 in FIG. 2 is arranged on the frame body 42 and pushed downward from above. That is, the enclosing area and shape of the frame body 42 are substantially the same as those of the filtering member 41, so that the filtering material 41 enters the frame body 42. However, since the triangular engagement portion 47 is provided in the frame body 42, the filtration member 41 does not naturally enter the frame body 42 by the engagement portion 47.
[0023]
Therefore, the filtering member 41 is pushed downward. Then, the filtering member 41 is smoothly pushed in by the inclined surface of the engaging portion 47 , and when pushed to the end, the holding portion 43 of the filtering member 41 is deformed, so that it enters the lower side of the engaging portion 47 . As a result, the holding portion 43 is arranged with the base edge portion 46 as a base, is prevented from being detached by the engaging portion 47 , and the filtering member 41 is attached to the frame body 42. This state is shown in FIGS . As shown in FIGS . 2 and 10, the filtering member 41 is disposed so that the traveling direction of the wavy wave is orthogonal to the direction in which the frame body 42 is extracted.
[0024]
In the present embodiment, in this way it is filtered member 41 is attached to the frame 42, between the inner wall 42b of the wall portion 42 a and the filtering member 41, when extraction of the filter member 40, housing a relatively large foreign matter A foreign matter storage portion 50a is formed.
Hereinafter, the foreign substance storage unit 50 will be described with reference to FIGS. 10 and 11. Figure 11 is a H-H cross-sectional view of FIG. In the foreign matter storage part 50a, the filtration member 41 and the inner wall 42b of the wall part 42a of the frame body 42 ( the inner side surface of 42a) have a predetermined interval in the entire rear side in the extraction direction in which the filter member 40 is extracted from the frame body 42. It is formed by opening and arranging. Specifically, as shown in FIG. 11 , the foreign matter storage unit 50 a is configured to be surrounded by the holding unit 43, the inner wall 42 b, and the filtering member 41 (filtering unit 44) with the holding unit 43 as a bottom surface. .
[0025]
Moreover, such a foreign material storage part 50a is also provided in the whole front side of the said extraction direction, and the foreign material storage part 50b is formed as shown in FIG. Further, in this example, such a foreign matter storage portion 50a is provided between all the inner walls of the frame body 42 and the filtration member 41, and the foreign matter storage portion in the left-right direction in FIG.
Next, after the filter member 41 is attached to the frame body 42, a method for detaching the filter member 40 into the inside / outside air blowing unit 1 will be described. Next, functions of the foreign matter storage units 50a to 50c will be described.
[0026]
First, when the filter member 40 is mounted in the inside / outside air blowing unit 1, the filter member 40 is inserted from the opening 30 as shown by the arrow in FIG. When the pinch engaging portion 49 is positioned and the frame body 42 is further pushed in, the pair of pinch portions 48b are elastically deformed and opened by the pushing force. Thereafter, when the frame body 42 is further pushed in, the pinching portion 48b is elastically restored, and the pinching portion 48b engages with the pinching receiving portion 49 so as to be caught. As a result, the filter member 40 is mounted in the inside / outside air blower unit 1, and is squeezed by the sandwiching portion 48 b and the sandwiching receiving portion 49.
[0027]
Although not shown in the present example, actually, two rows of inclined portions for guiding the insertion of the filter member 40 are formed in the inside / outside air blowing unit 1. When the filter member 40 is inserted into the inside / outside air blowing unit 1 from the opening 30, the insertion tip side of the filter member 40 is moved upward by the inclined surface, and the filter member 40 is positioned at a position where the insertion tip side is higher than the rear side. Is inserted in an inclined state. And if it inserts in this way, it will contact | abut to the inner wall of the vehicle front side of the inside / outside air ventilation unit 1 finally. As a result, the vertical position is positioned on the vehicle front side of the filter member 40, and the clip portion 48a is slightly lifted upward in accordance with this, and then fitted into the clip receiving portion 49.
[0028]
In this way, the filter member 40 is mounted in the inside / outside air blower unit 1 to be in the attached state shown in FIG. Then, the inside air or the outside air from above passes through the filter member 40. The outside air includes a leaf indicated by 51 in FIG. 1, and this leaf is the filter member 40 (filtering portion 44). It accumulates above the filter member 40 without passing through.
[0029]
Then, in order to replace the filter member 41 without the user knowing such a state, the filter member 40 is pulled out from the air-conditioning case 2 by pulling out the filter member 40 in the substantially horizontal direction behind the vehicle on the passenger seat side. Specifically, it pushes so that a pair of handle 48a may approach. As a result, the pair of pinching portions 48b are opened, the engagement between the pinching portions 48a and the pinching receiving portions 48b is released, and the frame body 42 is pulled out to the vehicle rear side in this state.
[0030]
Then, contrary to the case described above, the filter member 40 is in an inclined state in which the insertion tip side of the filter member 40 is moved upward by the inclined surface, and the filter member 40 is positioned at a position where the insertion tip side is higher than the lower side. Thereby, the space | interval of the upper end edge 30a of the opening part 30 and the upper surface of the filtration member 41 becomes large, and the foreign material deposited on the upper surface of the filter member 40 becomes difficult to interfere with the said upper end edge, and a foreign material becomes an inside / outside air ventilation unit. It becomes difficult to fall into 1.
[0031]
Here, when the leaf 51, which is a large foreign matter as described above, pulls out the filter member 40, the leaf 51 and the opening edge 30a interfere with each other. When the filter member 40 is pulled out, the leaf 51 is attached to the vehicle. Move forward. Then, the moved leaf 51 finally enters and is stored in the foreign matter storage section 50a. For this reason, when the filter member 40 is completely pulled out from the inside / outside air blowing unit 1, the leaf 51 can be taken out of the inside / outside air blowing unit 1 without being dropped into the inside / outside air blowing unit 1 by the foreign matter storage 50 a. .
[0032]
As described above, in the present invention, the height of one side of the frame body 42 is not increased as in the above-described conventional device, and a large foreign matter is reliably not dropped into the inside / outside air blowing unit 1. It is not necessary to increase the size.
In this example, as described above, the filtering member 41 is disposed so that the traveling direction of the wavy wave is orthogonal to the extraction direction of the filter member 40. This has the following effects. The inventor tried to arrange the filter member 41 in the same direction as the extraction direction of the filter member 40 in which the traveling direction of the wavy wave is. When the filter member 40 is actually pulled out from the inside / outside air blowing unit 1, the leaf 51 is sandwiched between the opening edge 30a. When the filter member 40 is further pulled out in a state where the foreign matter is clogged in this way, for example, the filtration unit 44 is elastically deformed in the wave traveling direction and then elastically returns, so that another foreign matter riding on the upper surface of the filtration unit 44 is removed. It was confirmed that it was scattered to the front side of the vehicle. For this reason, in this example, when the filter member 40 is pulled out, the traveling direction is arranged to be orthogonal to the extraction direction of the filter member 40 in order to make the wave-like filtration part 44 difficult to elastically deform. Thereby, scattering of a foreign material can be prevented beforehand.
[0033]
Moreover, in this invention, in order to form the said foreign material storage parts 50a-50c, the space between the filtration member 41 and the inner wall of the frame 42 is used using the small filtration member 41 with respect to the frame 42. You may make it form. However, if it does in this way, there exists a problem that the filtration area becomes small and the passage area in the inside / outside air ventilation unit 1 becomes small. Therefore, in this example, a base portion that is provided at the inner edge of the frame body and serves as a base of the holding portion is provided, the holding portion 43 serves as the bottom surface of the foreign matter storage portions 50a to 50c, and the filtering portion 44 is attached to the frame body 42. By effectively using the space of the holding portion 43 necessary for holding, the foreign matter storage portions 50a to 50c can be configured, and the above-described problems can be avoided.
[0034]
Further, in this example, since the foreign matter storage portion 50b is formed in a place different from the foreign matter storage portion 50a, a storage space for storing a larger foreign matter can be increased, and the foreign matter does not need to be dropped into the inside / outside air blower unit 1. Further, in this example, the foreign matter storage portion 50c is further formed, and the foreign matter storage portion is provided between all the inner walls of the frame body 42 and the filtration portion 44. No need to drop it.
[0035]
(Modification)
In the above embodiment, the foreign substance storage portion is formed over the entire inner wall of the frame body 42, but it is sufficient that at least the foreign substance storage portion 50a is provided.
In the above embodiments, the pull-out position of the filter member 40 is the vehicle front side of the glow box 20, but it may be pulled out from any position. Further, it may be pulled out in the vehicle width direction.
[0036]
In addition, a packing such as urethane foam is applied to the outer peripheral portion of the filtering member 41, and the packing is compressed so that the filtering member 41 is held in the frame body 42. The thickness of the packing is the thickness of the filtering member 41. The foreign matter storage portions 50a to 50c may be formed by making it smaller.
[Brief description of the drawings]
FIG. 1 is a vehicle mounting diagram of an inside / outside air blowing unit 1 of the present invention.
FIG. 2 is a vehicle mounting diagram of the inside / outside air blowing unit 1 of the present invention.
FIG. 3 is a top view of the filtering member in the embodiment.
4 is a cross-sectional view taken along the line BB in FIG. 3. FIG.
5 is a sectional view taken along the line CC in FIG. 3. FIG.
FIG. 6 is a top view of the frame carrier in the embodiment.
7 is a view seen from the lower side to the upper side in FIG. 6;
FIG. 8 is a cross-sectional view taken along the line FF in FIG.
9 is a view taken in the direction of arrow G in FIG.
FIG. 10 is a top view in a state where the filtering member 41 and the frame body 42 are assembled in the embodiment.
11 is a cross-sectional view taken along line HH in FIG.
[Explanation of symbols]
3 ... Air-conditioning case, 6 ... Blower fan, 22 ... Outside air inlet,
40 ... Filter member, 41 ... Filtration member, 42 ... Frame, 42b ... Inner wall,
50a-50c ... Foreign matter storage part, 51 ... Leaf (foreign matter).

Claims

An air conditioning case (3) having an outside air inlet (22);
A filter member (40) disposed in the air-conditioning case (3), for removing foreign matter entering along with the outside air from the outside air inlet (22);
A blower fan (6) disposed below the filter member (40),
The filter member (40) is an inside / outside air blower unit of a vehicle air conditioner that can be pulled out in a substantially horizontal direction from the inside of the air conditioning case (3).
The filter member (40) includes a filtration member (41) for removing the foreign matter, and a frame (42) that holds the filtration member (41) so as to surround the filter member (41).
A holding portion (43) for holding the filtering member (41) on the frame (42) is provided on the outer edge of the filtering member (41) at a lower portion of the filtering member (41).
On the inner edge of the frame (42), a base part (46) that extends inward and becomes a base of the holding part (43) is provided,
The holding part (43) is smaller than the height of the filtration member (41) in the air passage direction,
On the rear side in the extraction direction for extracting the filter member (40), the filtration member (41) and the inner wall (42b) of the frame body (42) are arranged at a predetermined interval, and the filtration member (41 ) And the inner wall (42b) are provided with a foreign matter storage part (50a) for storing the foreign matter (51) when the filter member (40) is withdrawn,
The foreign matter storage portion (50a) is configured by being surrounded by the holding portion (43), the inner wall (42b), and the filtering member (41) with the holding portion (43) as a bottom surface. The inside / outside air blowing unit of the vehicle air conditioner.

The filter member (41) has a shape bent in a wave shape, and the filter member (41) is arranged so that the traveling direction of the wave wave is orthogonal to the extraction direction. The inside / outside air ventilation unit of the vehicle air conditioner according to claim 1.

The inside / outside air blowing unit of the vehicle air conditioner according to claim 1 or 2, wherein the filtering member (41) and the holding portion (43) are integrally formed.

The frame (42) and said filter member (41) is formed in a rectangular shape,
The said foreign material storage part (50a) is provided in the whole region between the inner wall (42b) of the back side of the said extraction direction, and the said filter member (41), The one of Claim 1 thru | or 3 characterized by the above-mentioned. The internal / external air ventilation unit of the vehicle air conditioner as described in one .

The filtering member (41) and the inner wall (42b) of the frame (42) are arranged at a predetermined interval in the entire front side in the extraction direction so that the filtering member (41) and the inner wall (42b) are arranged. The inside / outside air blower unit of the vehicle air conditioner according to claim 4 , further comprising a foreign matter storage portion (50 b) for storing the foreign matter (51) when the filter member (40) is withdrawn.

In the air conditioning case (3), an opening (30a) for extracting the filter member (40) is formed in a vehicle rear side portion,
The filter member (40), by pulling at the passenger side to the vehicle rear, to any one of claims 1 to 5, characterized in that is adapted to be withdrawn from the air conditioning case (3) The inside / outside air blowing unit of the vehicle air conditioner described.