JP3731106B2

JP3731106B2 - Hand dryer

Info

Publication number: JP3731106B2
Application number: JP31679199A
Authority: JP
Inventors: 昌樹打田; 智彦堀井
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 1999-11-08
Filing date: 1999-11-08
Publication date: 2006-01-05
Anticipated expiration: 2019-11-08
Also published as: JP2001128884A

Description

【０００１】
【発明の属する技術分野】
本発明は、洗浄後の濡れた手を乾燥させるための手乾燥装置に関するものである。
【０００２】
【従来の技術】
従来の濡れた手を乾燥させる手挿入部を有する手乾燥装置として図６に示す特開平７−１３６０７６号公報に掲載の技術が知られている。
【０００３】
図において、１は手乾燥装置の箱体である本体で、２は本体１に設けられた上面と側面が開口したＵ字形状の手挿入部、３は高圧空気流発生装置としての送風機、４は手挿入部の底部に設けられた排水口、５は排水口からのドレン水を下方のドレンタンク１１に導くための排水管。
【０００４】
６は高圧空気流発生装置の吸込口、７は本体１の下方に設けられた吸込口、９は吸込口６と７を連通する吸気ダクト、１０は吸込口６の上流に当たるチャンバー、１１は排水管５からのドレン水をためるドレンタンク、１４は吸込口７に設けられたフィルタ、１６は高圧空気流発生装置からの空気を吹出すノズルに導く風路である排気ダクト、１８ａ及び１８ｂは高圧空気流を高速空気流として手挿入部２内に吹出すノズルである。
【０００５】
送風機３は電動機部と羽根車部から構成され、羽根車を電動機で回転させて高圧空気を発生させるもので、手挿入部２の下方に設置されている。
手挿入部２は、Ｕ字形状をして下方に位置する内壁部品２ｂと、内壁部品２ｂの上方に位置する内壁部品２ａ、２ｃとの複数の内壁部品から構成されている。
【０００６】
内壁部品２ｂと内壁部品２ａ、２ｃとの間には図５に示すようにパッキン２１が設けられ水が浸入しないようになっている。（内壁部品２ｂと内壁部品２ａとの間も同様に構成されている。）パッキン２１の下方には電気回路部品が収納されている空間２ｄが構成されている。。
また、内壁部品２ｃの本体内部には高圧空気流の風路である排気ダクト１６が構成されている。
【０００７】
上記のように構成された手乾燥装置は、手挿入部２へ手を入れると、手挿入部２の奥に設けられたセンサー（図示せず）が手を検知して送風機３が作動する。送風機３が作動すると、空気が吸込口７から吸気ダクト９及び吸込口６を通って送風機３に入り高圧化されて吹出される。
【０００８】
送風機３より吹出された高圧空気は排気ダクト１６を通り上下のノズル１８ａ、１８ｂから高速空気流として手挿入部２に噴出され、濡れた手に当たり、手に付着していた水滴を吹飛ばし乾燥させる。吹き飛ばされた水滴は手挿入部２の内壁部品２ａ，２ｂ，２ｃの表面に付着して下方に流れ、排水口４より排水管５を通ってドレンタンク１１に流れ込む。
【０００９】
【発明が解決しようとする課題】
このように手乾燥装置は、高速の空気を濡れた手に当て、手に付着している水滴を吹き飛ばして短時間乾燥をするものであるが、しかし、手挿入部の内壁部品の合わせ部の隙間から内部に水が進入し収納されている電気部品を濡らす可能性があり、水侵入を防止する為に内壁部品２ａ，２ｂ，２ｃの合わせ部に隙間を塞ぐゴム製のパッキン等を用いてシールをしなければならなかった。
【００１０】
しかし、パッキンを使用すると、部品点数が増え、その金型費用や部品費用、パッキンを製品に組み付ける作業時間が増えその分コストがアップする課題があった。
【００１１】
また、内壁部品２ａ，２ｂ，２ｃの合わせ部には必ず隙間ができるので、その隙間にゴミや汚れ等が付着し易く、掃除しても除去することができず、清潔感や見栄えが悪くなる課題があった。
【００１２】
本発明は、上記課題を解決し、パッキン等のシール部品を使用せずに、内壁部品の合わせ部の隙間から内部に水が侵入を防止するとともにコスト低減を図り、また、合わせ部の隙間にゴミや汚れを付きにくくして清潔感や見栄えの良い手乾燥装置を得ることを目的とするものである。
【００１３】
【問題を解決するための手段】
本発明は、本体の上面及び側面に開口し、手を収納できる広さを有する手挿入部に、前記本体に設けられた高圧空気流を発生する送風機と、前記高圧空気流を高速空気流として噴出させる前記手挿入部の互いに対向した面にそれぞれ配置されたノズルと、前記高圧空気流を前記送風機から前記ノズルに送る風路とを有する手乾燥装置において、前記手挿入部を構成する内壁部品と内壁部品との合わせ部分を、一方の内壁部品に凹部を設け、他方の内壁部品の端部を前記凹部に挿入する嵌合部を設け、前記凹部に前記嵌合部を嵌め合せ、前記凹部と前記嵌合部との間に第一の隙間と第二の隙間と、前記第一の隙間と第二の隙間との間に水の浸入を止める水切り部とを設け、前記第一の隙間は前記水切り部の手挿入部側下端側に、前記第二の隙間は前記凹部と前記嵌合部との間に構成し、前記水切り部は前記第一の隙間より、高さ、奥行きが大きい空間としたものである。
【００１４】
また、前記水切り部の前記嵌合部側の形状を開口方向を手挿入部側に開口するようにコの字型にしたものである。
【００１５】
また、本体の上面及び側面に開口し、手を収納できる広さを有する手挿入部に、前記本体に設けられた高圧空気流を発生する送風機と、前記高圧空気流を高速空気流として噴出させる前記手挿入部の互いに対向した面にそれぞれ配置されたノズルと、前記高圧空気流を前記送風機から前記ノズルに送る風路とを有する手乾燥装置において、前記手挿入部の内壁部品と内壁部品との合わせ部分又は嵌合部に高圧空気流を供給する手段を設けたものである。
【００１６】
また、前記手挿入部の内壁部品と内壁部品との合わせ部分又は嵌合部の対向面を内壁部品面に対して所定の角度を形成するように構成したものである。
【００１７】
また、前記手挿入部の内壁部品と内壁部品との合わせ部分又は嵌合部の対向面を手挿入部側が上方に高く、手挿入部側から離れる奥側が下方に低くなるように構成したものである。
【００１８】
【発明の実施の形態】
実施の形態１．
以下、本発明の実施の形態１について説明をする。なお従来例と同じ部分は詳しい説明は省略する。
図１は本発明の手乾燥装置を示す断面図である。図において、１は手乾燥装置の外郭をなす本体、２はこの本体１の上面および側面を開口して手の挿抜自在に設けられた手挿入部であり、下部方向へ傾斜を有して底部が略Ｕ字状を呈している。４は手挿入部２の底部に設けられた排水口、５は排水口４に接続された排水管、１１はドレン水を溜めるドレンタンクである。
【００１９】
１８ａ、１８ｂは手挿入部２の入口の対抗する面に設けられた高速空気流を吹出すノズルであり、手挿入部２に挿入した手（図示せず）を擦り合せることなく、手に付着した水滴を手の表裏から排除できるように、手の甲側と掌側の双方に風を同時に当てるようになっている。ノズルの向きは、手に対して入口から奥への圧力勾配を形成するような傾斜を有して設けられている。
【００２０】
手挿入部２はノズル１８ａ，１８ｂを有する上部の内壁部品２ａ，２ｃとそれに繋がって下方にＵ字形状を構成する内壁部品２ｂで構成され、内壁部品２ａ、２ｂ、２ｃの表面には、シリコン系もしくはフッ素系等の撥水性コ−ティング、又は酸化チタン等の親水性があるコ−ティング、又は抗菌剤含浸を処理し、表面の汚れ付着の低減及び菌の繁殖の低減を図っている。内壁部品２ａ，２ｃの下方には２ａ，２ｃに連続して内壁部分２ｅ，２ｆが後述するように排気ダクト３２の一部として構成されている。
【００２１】
３２は送風機３０の排出口３１に接続された排気ダクトで、手挿入部２に設けられたノズル１８ａ、１８ｂに接続されている。排気ダクト３２は送風機３０の排出口３１に接続する部分からノズル１８ａ，１８ｂに至るまで合成樹脂で一体に成形されて排気風路を構成している。
排気ダクト３２の手挿入部側の上部部分は手挿入部の内壁部品２ａ及び２ｃを構成し、２ａ及び２ｃの下方の２ｅ、２ｆ部分にはセンサーや回路基板などの電気部品が収納される空間２ｄとなる凹部を形成している。
【００２２】
２ｅ、２ｆ部分の空間２ｄを覆う内壁部品２ｂは略Ｕ字形状をして上方と両側面が開口し、内壁部品２ａ，２ｃの下方に取りつけたとき空間２ｄを完全に覆い、電気部品に水がかからないようにしている。内壁部品２ｂの略Ｕ字形状の上端部の２辺は内壁部品２ａ、２ｃの２ｅ、２ｆ部分との境界付近の後述する凹部で嵌まり合い空間２ｄに水が浸入しないように固定される。
【００２３】
排気ダクト３２と送風機３０の排出口３１との接続はチャンバー４０の外側で防振部材を介して排気ダクト３２に伝わる送風機３０の振動が少なくなるように連結されている。１２ａと１２ｂは手を検知するセンサーである発光素子と受光素子、１３は手挿入部２や挿入される手を照明する照明用発光素子である。
【００２４】
送風機３０は遠心式の高圧空気を発生させるもので手挿入部２の下方のチャンバー４０内に設けられている。チャンバー４０は上面に送風機３０の排出口３１を接続して高速空気を排出できる排出口４０ａを有し、下面には吸気口４１を有して吸気風路を構成している。チャンバー４０内の送風機３０は排出口３１をチャンバーの排出口４０ａに一致させて固定されている。
【００２５】
送風機３０をチャンバー４０内に固定する部分及び排出口３１の固定部分は防振のための防振部材（例えば、ばね材やゴム材等の部品）を介して固定され、フローティング機能を持たせて送風機３０の振動が周囲に伝いにくくして騒音が大きくならないようにしてある。チャンバー４０の吸気口４１には、空気中の埃などを除去する着脱可能なフィルター４２が設けられている。
【００２６】
手を手首付近まで手挿入部２へ挿入し、センサー１２ａ、１２ｂが手を検知して送風機３０が作動すると、空気が吸気口４１よりチャンバー４０内を通り、送風機３０に吸込まれ高圧空気となる吸気風路と、送風機３０から排出されて排気ダクト３２を経由して、ノズル１８ａ、１８ｂより高速空気が噴出される排気風路とからなる風路が形成される。
【００２７】
次に手挿入部の内壁部品２ｂの略Ｕ字形状の上端部２辺と内壁部品２ａ、２ｃの２ｅ、２ｆ部分とのの境界付近での嵌め合い部分についての構造を説明する。
図２は本発明の内壁部品２ｂと２ａ、２ｃの嵌め合い形状を示す図である。
図において、内壁部品２ａ、２ｃの２ｅ、２ｆ部分の境界付近に、２ａ、２ｃ側から２ｅ，２ｆ部分の面に略平行に所定の間隔を有して下方に突出片２ｇを設けて、２ｃ、２ｆ、２ｇとの間で凹部２ｈを形成している。内壁部品２ｂの略Ｕ字形状の上端部には前記凹部２ｈに嵌め合う嵌合部２ｉを設けて、凹部２ｈと嵌合部２ｉを嵌め合せて内壁部品２ｂを固定することで水の侵入を阻止する。この構成によりパッキン等のシール部品を省略できる。
【００２８】
凹部２ｈと嵌合部２ｉの寸法関係は、凹部２ｈの内寸法が嵌合部２ｉの外寸法に対して微少隙間を有するスキマバメに構成されている。
嵌合部２ｉには手挿入部側に向かって開口する水切り部２ｊが形成されている。この水切り部２ｊを設ける事により嵌合部２ｉの断面形状はコの字型を形成している。
【００２９】
水切り部２ｊは凹部２ｈの内寸法と嵌合部２ｉの外寸法とで出来る隙間より高さ方向、奥行きともに大きな空間に構成され、突出片２ｇの端の隙間より毛細管現象により侵入する水をここで断ち切る事により、空間２ｄへの水の浸入を阻止して電気部品を保護する。水切り部２ｊの開口方向が手挿入部側に開口していることにより水が浸入する位置よりも開口の上面が高い位置になるので、高い水の侵入防止効果を有している。
これによりパッキン等のシール部品を使用しなくても防水が出来、部品を省略できる。
凹部２ｈの嵌合部２ｉの装着は凹部２ｈの下から差し込み装着される。
【００３０】
水切り部２ｊの別の実施例を図３に示す。図３において、水切り部２ｊは嵌合部２ｉの上方の端部に設けられ、２ｅ、２ｆ部分の面に平行で内壁部品２ａ、２ｃの方向である上方に開口している。
水切り部２ｊは凹部２ｈの内寸法と嵌合部２ｉの外寸法とで出来る隙間より幅及び深さともに大きな空間に構成され、突出片２ｇの端の隙間より毛細管現象により侵入する水をここで断ち切る事により、空間２ｄへの水の浸入を阻止して電気部品を保護する。また、水切り部２ｊをこのように設けることにより成形の型が抜き方向が同じになり構造が簡単になって型の製作がし易く型の費用が安価になり、一体成形もし易くなる。
凹部２ｈの嵌合部２ｉの装着は下から差し込み装着する。
【００３１】
実施の形態２．
実施の形態２として手挿入部の内壁部品の合わせ部（又は嵌合部）に排気ダクト３２からの高圧空気流を供給する手段を設けた構成を図４を用いて説明する。
図４の手挿入部の内壁部品のあわせ部（又は嵌合部）以外は実施の形態１と同じであり説明は省略する。
【００３２】
図４において、内壁部品２ａ、２ｃ及びその２ｅ、２ｆ部分は排気ダクト３２の一部を構成しており、その内側を高圧空気が流れている。この内壁部品２ａ、２ｃの２ｅ、２ｆ部分の境界付近に壁を貫通する高圧空気流を供給する手段としての噴出穴２ｋを複数設け、排気ダクト３２内の高圧空気を内壁部品２ｂとのあわせ部（又は嵌合部）の隙間に噴出させる。
【００３３】
内壁部品２ｂとの合わせ部（又は嵌合部）の形状は２ｅ、２ｆ部分に設けられた、電気部品を収納する空間２ｄの深さに等しい側縁２ｍが形成されている。側縁２ｍは手挿入部側が高く、２ｅ，２ｆの内壁側が低くなる勾配を有している。これは、合わせ部（又は嵌合部）の隙間から吹出す空気流が、手を乾燥するとき、手に当たった高速空気流が手挿入部の底部から吹き上げるが、この気流といっしょに上部方向に吹出すようにして隙間からの強い吹き出し空気流を維持するためである。
【００３４】
内壁部品２ａ、２ｃの２ｅ、２ｆ部分との境界付近の合わせ部（又は嵌合部）の内壁部品２ｂの側縁２ｍに対面する部分は側縁２ｍと等しい勾配に形成され、内壁部品２ｂが組み合わされた時、側縁２ｍの面とほぼ密着する状態になる。ただし、密着状態となるものの部品の製作公差により微小隙間ができている。
側縁２ｍの端部は、内壁部品２ａ，２ｃの２ｅ、２ｆの面に密着している。
【００３５】
このように構成された手乾燥装置は、手を手首付近まで手挿入部２へ挿入すると、センサー１２ａ、１２ｂが手を検知し、送風機３０が作動し、それによってチャンバー４０の吸気口４１よりフィルタ４２を通過して空気が吸気され、チャンバー４０内を通り、送風機３０に吸込まれる。送風機３０で空気は高圧空気となり、排気ダクト３２を流れて、ノズル１８ａ、１８ｂより高速空気が噴出され、手挿入部２内に挿入された手に当たり、手の表面に付着していた水を水滴として吹飛ばされ手が乾燥する。
【００３６】
また、内壁部品２ａ、２ｃの２ｅ、２ｆ部分の境界付近に壁を貫通して設けられた噴出穴２ｋからは、排気ダクト３２内の高圧空気が内壁部品２ｂとの合わせ部（又は嵌合部）の隙間に噴出される。この噴出された高圧空気流は手挿入部側に吹出し水が浸入してくるのを阻止すると同時に、ここの隙間にゴミや汚れが付着するのを防止する。
【００３７】
また、電気部品を収納している空間２ｄにも高圧空気流の圧力が加わり、空間２ｄ内の圧力を高くして水の浸入を防止し、電気部品を保護する。
手が乾燥し、手を手挿入部２から完全に抜くと、センサー１２ａ、１２ｂが手を検知しなくなる為、送風機３０が停止し送風が止る。
【００３８】
排気ダクト３２内の高圧空気流が内壁部品２ｂとの合わせ部（又は嵌合部）の隙間に噴出されることにより、手挿入部の合わせ部（又は嵌合部）の隙間が広くなっても水侵入を防ぐ効果は落ちることがなくパッキン材等のシール材を省略できる手乾燥装置が得られる。
【００３９】
【発明の効果】
本発明によれば、手挿入部を構成する内壁部品と内壁部品の合わせ部分を、一方に凹部を設け、他方に前記凹部に挿入する嵌合部を設けて嵌め合せ、この嵌め合せ部分に水切り部を設け隙間より毛細管現象により侵入する水を遮断して内部への水の侵入を防止できるようにしたことにより、パッキン等のシール部品を使用することなく製品内部への水侵入を防止することができる効果がある。
【００４０】
また、前記水切り部の嵌合部の開口方向を手挿入部側に開口するようにしたので、水が侵入する位置に対して前記開口の上面が高い位置になるので高い水の侵入防止効果が得られる。
【００４１】
また、内壁部品と内壁部品との合わせ部（又は嵌合部）に高圧空気を供給することにより、隙間に侵入する水を吹き飛ばして水が内部侵入することを防止できる効果がある。
【００４２】
内壁部品と内壁部品との合わせ部（又は嵌合部）の互いの面を内壁面に対して所定の角度もって形成したので面と面を密着して取付けることが容易にできる。
【００４３】
内壁部品と内壁部品との合わせ部（又は嵌合部）の互いの面を手挿入部側が高く奥側が下方に低くなるように構成したので、隙間から吹出す高速空気流の方向と、ノズルから吹出され手に当たって手挿入部の底部から吹き上げてくる風と吹く方向が同じになり隙間から吹出す高速空気流の邪魔をすることがないので強い吹出し空気流が維持できる効果がある。
【図面の簡単な説明】
【図１】本発明の手乾燥装置の断面図である。
【図２】本発明の手挿入部の内壁部品嵌め合せ部分を示す断面図である。
【図３】本発明の手挿入部の内壁部品嵌め合せ部分の別な形状を示す断面図である。
【図４】本発明の手挿入部の内壁部品の合わせ部（又は嵌合部）に高圧空気流を吹出す構成を示す断面である。
【図５】従来の手挿入部の内壁部品の合わせ部を示す断面図である。
【図６】従来の手乾燥装置の断面図である。
【符号の説明】
２手挿入部、２ａ，２ｂ，２ｃ内壁部品、３２排気ダクト、２ｄ空間、２ｇ突出片、２ｈ凹部、２ｉ嵌合部、２ｊ水切り部、２ｋ噴出穴、２ｍ側縁。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hand dryer for drying wet hands after washing.
[0002]
[Prior art]
A technique disclosed in Japanese Patent Application Laid-Open No. 7-136076 shown in FIG. 6 is known as a conventional hand drying apparatus having a hand insertion portion for drying a wet hand.
[0003]
In the figure, 1 is a main body which is a box of a hand dryer, 2 is a U-shaped hand insertion portion provided on the main body 1 with an open top surface and side surfaces, 3 is a blower as a high-pressure airflow generator, 4 Is a drain port provided at the bottom of the manual insertion portion, and 5 is a drain pipe for guiding drain water from the drain port to the drain tank 11 below.
[0004]
6 is a suction port of the high-pressure airflow generator, 7 is a suction port provided below the main body 1, 9 is an intake duct communicating the suction ports 6 and 7, 10 is a chamber corresponding to the upstream of the suction port 6, and 11 is drainage A drain tank for accumulating drain water from the pipe 5, 14 is a filter provided in the suction port 7, 16 is an exhaust duct that is an air passage leading to a nozzle that blows out air from the high-pressure air flow generator, and 18a and 18b are high pressures. It is a nozzle that blows the air flow into the manual insertion portion 2 as a high-speed air flow.
[0005]
The blower 3 includes an electric motor part and an impeller part, and rotates the impeller with the electric motor to generate high-pressure air, and is installed below the manual insertion part 2.
The manual insertion portion 2 is formed of a plurality of inner wall parts including an inner wall part 2b that is U-shaped and located below, and inner wall parts 2a and 2c that are located above the inner wall part 2b.
[0006]
As shown in FIG. 5, a packing 21 is provided between the inner wall part 2b and the inner wall parts 2a and 2c so that water does not enter. (Between the inner wall part 2b and the inner wall part 2a is similarly configured.) Below the packing 21, a space 2d in which an electric circuit part is housed is formed. .
Further, an exhaust duct 16 that is an air passage for high-pressure airflow is formed inside the main body of the inner wall part 2c.
[0007]
In the hand drying device configured as described above, when a hand is inserted into the hand insertion unit 2, a sensor (not shown) provided in the back of the hand insertion unit 2 detects the hand and the blower 3 is activated. When the blower 3 is activated, air enters the blower 3 from the suction port 7 through the intake duct 9 and the suction port 6, and is pressurized and blown out.
[0008]
The high-pressure air blown from the blower 3 passes through the exhaust duct 16 and is jetted from the upper and lower nozzles 18a and 18b as a high-speed air stream to the hand insertion portion 2, hits a wet hand, blows off water droplets adhering to the hand, and is dried. . The water droplets blown off adhere to the surfaces of the inner wall parts 2 a, 2 b, 2 c of the hand insertion part 2 and flow downward, and flow into the drain tank 11 through the drain pipe 5 through the drain pipe 5.
[0009]
[Problems to be solved by the invention]
In this way, the hand dryer applies high-speed air to a wet hand and blows off water droplets adhering to the hand to dry it for a short time. There is a possibility that water enters the inside from the gap and wets the stored electrical parts, and in order to prevent water intrusion, a rubber packing that closes the gap at the mating part of the inner wall parts 2a, 2b, 2c is used. Had to seal.
[0010]
However, when the packing is used, the number of parts increases, and there is a problem that the cost of the mold and parts, the time for assembling the packing to the product increase, and the cost increases accordingly.
[0011]
Further, since there is always a gap in the joint portion of the inner wall parts 2a, 2b, 2c, dust and dirt etc. are likely to adhere to the gap and cannot be removed even after cleaning, resulting in poor cleanliness and appearance. There was a problem.
[0012]
The present invention solves the above-mentioned problems, prevents the intrusion of water from the gap between the inner wall parts and without using seal parts such as packing, and reduces the cost. The object of the present invention is to obtain a hand-drying device that is less likely to get dust and dirt and has a clean feeling and a good appearance.
[0013]
[Means for solving problems]
The present invention provides a blower for generating a high-pressure air flow provided in the main body, and a high-speed air flow as a high-speed air flow, in a hand insertion portion having an area that can be opened and stored in the upper surface and side surfaces of the main body. Inner wall components constituting the hand insertion part in a hand dryer having nozzles respectively disposed on mutually facing surfaces of the hand insertion part to be ejected and an air passage for sending the high-pressure air flow from the blower to the nozzle The inner wall part is provided with a recess in one inner wall part, a fitting part for inserting the end of the other inner wall part into the recess is provided, and the fitting part is fitted into the recess. A first gap and a second gap between the first gap and the fitting section, and a draining section for stopping water intrusion between the first gap and the second gap. Is the second gap on the lower end side of the draining portion on the hand insertion portion side Configured between the recess and the fitting portion, the draining section than said first gap, in which the height, depth larger space.
[0014]
Further, the shape of the draining portion on the fitting portion side is formed in a U shape so that the opening direction is opened to the hand insertion portion side.
[0015]
Further, a blower for generating a high-pressure air flow provided in the main body and a high-pressure air flow are ejected as a high-speed air flow in a hand insertion portion that opens on the upper surface and side surfaces of the main body and has a size that can accommodate a hand. In the hand dryer having nozzles respectively disposed on mutually facing surfaces of the manual insertion part, and an air passage for sending the high-pressure air flow from the blower to the nozzle, an inner wall part and an inner wall part of the manual insertion part, Means for supplying a high-pressure air flow to the mating portion or the fitting portion is provided.
[0016]
Further, the mating part of the inner wall part and the inner wall part of the manual insertion part or the facing surface of the fitting part is formed so as to form a predetermined angle with respect to the inner wall part surface.
[0017]
Also, the mating portion of the inner wall part and the inner wall part of the hand insertion part or the facing surface of the fitting part is configured such that the hand insertion part side is higher upward and the back side away from the hand insertion part side is lower downward. is there.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
Hereinafter, the first embodiment of the present invention will be described. Detailed description of the same parts as in the conventional example is omitted.
FIG. 1 is a cross-sectional view showing a hand dryer according to the present invention. In the figure, 1 is a main body that forms the outline of the hand dryer, 2 is a hand insertion portion that is provided so that the upper surface and side surfaces of the main body 1 are opened and the hand can be inserted and removed. Is substantially U-shaped. Reference numeral 4 denotes a drain port provided at the bottom of the manual insertion portion 2, 5 denotes a drain pipe connected to the drain port 4, and 11 denotes a drain tank for storing drain water.
[0019]
Reference numerals 18a and 18b are nozzles for blowing a high-speed air flow provided on the surface facing the entrance of the hand insertion portion 2, and adhere to the hand without rubbing the hand (not shown) inserted into the hand insertion portion 2. In order to remove the water droplets from the front and back of the hand, the wind is applied to both the back side and the palm side at the same time. The direction of the nozzle is provided with an inclination so as to form a pressure gradient from the inlet to the back with respect to the hand.
[0020]
The manual insertion part 2 is composed of upper inner wall parts 2a and 2c having nozzles 18a and 18b and an inner wall part 2b connected to the upper wall part 2b and forming a U-shape downward. The surface of the inner wall parts 2a, 2b and 2c is made of silicon. A water-repellent coating such as a system or fluorine-based coating, a hydrophilic coating such as titanium oxide, or impregnation with an antibacterial agent is treated to reduce adhesion of dirt on the surface and propagation of bacteria. Below the inner wall parts 2a and 2c, inner wall portions 2e and 2f are formed as a part of the exhaust duct 32 so as to be described later.
[0021]
Reference numeral 32 denotes an exhaust duct connected to the discharge port 31 of the blower 30, which is connected to the nozzles 18 a and 18 b provided in the manual insertion portion 2. The exhaust duct 32 is integrally formed of a synthetic resin from the portion connected to the discharge port 31 of the blower 30 to the nozzles 18a and 18b to constitute an exhaust air passage.
The upper portion of the exhaust duct 32 on the hand insertion portion side constitutes the inner wall components 2a and 2c of the hand insertion portion, and the spaces 2e and 2f below the portions 2a and 2c store electric components such as sensors and circuit boards. A recess to be 2d is formed.
[0022]
The inner wall part 2b covering the space 2d of the parts 2e and 2f is substantially U-shaped, and the upper and both side surfaces are open. When the inner wall part 2b is attached to the lower part of the inner wall parts 2a and 2c, the space 2d is completely covered. It is made so that it won't be applied. The two sides of the substantially U-shaped upper end portion of the inner wall part 2b are fitted in recesses described later near the boundaries between the inner wall parts 2a and 2c and the 2e and 2f portions, and are fixed so that water does not enter the space 2d.
[0023]
The connection between the exhaust duct 32 and the exhaust port 31 of the blower 30 is connected to the outside of the chamber 40 so that vibration of the blower 30 transmitted to the exhaust duct 32 via the vibration isolating member is reduced. Reference numerals 12a and 12b denote light-emitting elements and light-receiving elements that are sensors for detecting the hand, and reference numeral 13 denotes a light-emitting element for illumination that illuminates the hand insertion portion 2 and the inserted hand.
[0024]
The blower 30 generates centrifugal high-pressure air and is provided in the chamber 40 below the manual insertion portion 2. The chamber 40 has a discharge port 40a through which the high-speed air can be discharged by connecting the discharge port 31 of the blower 30 on the upper surface, and has an intake port 41 on the lower surface to constitute an intake air passage. The blower 30 in the chamber 40 is fixed with the discharge port 31 aligned with the discharge port 40a of the chamber.
[0025]
A portion for fixing the blower 30 in the chamber 40 and a fixing portion for the discharge port 31 are fixed via a vibration isolating member (for example, a spring material, a rubber material, or the like) to provide a floating function. The vibration of the blower 30 is not easily transmitted to the surroundings so that the noise does not increase. A detachable filter 42 that removes dust and the like in the air is provided at the air inlet 41 of the chamber 40.
[0026]
When the hand is inserted into the hand insertion part 2 up to the vicinity of the wrist and the sensors 12a and 12b detect the hand and the blower 30 is activated, the air passes through the chamber 40 from the intake port 41 and is sucked into the blower 30 to become high-pressure air. An air passage composed of an intake air passage and an exhaust air passage through which high-speed air is ejected from the nozzles 18a and 18b through the exhaust duct 32 after being discharged from the blower 30 is formed.
[0027]
Next, the structure of the fitting part in the vicinity of the boundary between the two sides of the substantially U-shaped upper end part of the inner wall part 2b of the hand insertion part and the 2e and 2f parts of the inner wall parts 2a and 2c will be described.
FIG. 2 is a view showing a fitting shape of the inner wall parts 2b and 2a, 2c of the present invention.
In the figure, a protruding piece 2g is provided in the vicinity of the boundary between the 2e and 2f portions of the inner wall parts 2a and 2c, with a predetermined interval substantially parallel to the surface of the 2e and 2f portions from the 2a and 2c sides, and 2c A recess 2h is formed between 2f and 2g. The upper end of the substantially U-shaped inner wall part 2b is provided with a fitting part 2i that fits into the concave part 2h, and the concave part 2h and the fitting part 2i are fitted together to fix the inner wall part 2b so that water can enter. Stop. With this configuration, seal parts such as packing can be omitted.
[0028]
The dimensional relationship between the concave portion 2h and the fitting portion 2i is configured such that the inner dimension of the concave portion 2h is a gap that has a minute gap with respect to the outer dimension of the fitting portion 2i.
The fitting portion 2i is formed with a draining portion 2j that opens toward the hand insertion portion side. By providing this draining portion 2j, the cross-sectional shape of the fitting portion 2i forms a U-shape.
[0029]
The draining portion 2j is formed in a space that is larger in both height and depth than the gap formed by the inner dimension of the recess 2h and the outer dimension of the fitting portion 2i, and the water that penetrates by capillarity from the gap at the end of the protruding piece 2g is here. By cutting off, the intrusion of water into the space 2d is prevented and the electrical components are protected. Since the opening direction of the draining portion 2j is open to the hand insertion portion side, the upper surface of the opening is higher than the position where water enters, so that it has a high water entry preventing effect.
Thereby, waterproofing can be performed without using seal parts such as packing, and the parts can be omitted.
The fitting portion 2i of the recess 2h is attached by being inserted from below the recess 2h.
[0030]
Another embodiment of the draining portion 2j is shown in FIG. In FIG. 3, the draining portion 2j is provided at the upper end of the fitting portion 2i, and opens upward in the direction of the inner wall parts 2a and 2c in parallel to the surfaces of the portions 2e and 2f.
The draining portion 2j is formed in a space that is larger in both width and depth than the gap formed by the inner dimension of the recess 2h and the outer dimension of the fitting portion 2i, and the water that penetrates by capillary action from the gap at the end of the protruding piece 2g is here. By cutting off, it prevents water from entering the space 2d and protects the electrical components. Further, by providing the draining portion 2j in this way, the molding die has the same pulling direction, the structure is simplified, the mold can be easily manufactured, the cost of the mold is reduced, and the integral molding is facilitated.
The fitting portion 2i of the recess 2h is attached by inserting from below.
[0031]
Embodiment 2. FIG.
A configuration in which means for supplying a high-pressure air flow from the exhaust duct 32 is provided at the mating portion (or fitting portion) of the inner wall parts of the manual insertion portion as a second embodiment will be described with reference to FIG.
Except for the mating part (or fitting part) of the inner wall part of the manual insertion part of FIG. 4, the description is omitted because it is the same as that of the first embodiment.
[0032]
In FIG. 4, inner wall parts 2a, 2c and portions 2e, 2f form part of the exhaust duct 32, and high-pressure air flows through the inside thereof. A plurality of ejection holes 2k as means for supplying a high-pressure air flow penetrating the wall are provided near the boundary between the 2e and 2f portions of the inner wall parts 2a and 2c, and the high-pressure air in the exhaust duct 32 is combined with the inner wall part 2b. (Or fitting part) is ejected into the gap.
[0033]
The shape of the mating part (or fitting part) with the inner wall part 2b is formed in the side edges 2m, which are provided in the parts 2e and 2f and are equal to the depth of the space 2d for storing the electrical parts. The side edge 2m has a slope in which the hand insertion portion side is high and the inner wall sides of 2e and 2f are low. This is because when the airflow that blows out from the gap between the mating parts (or fitting parts) dries the hand, the high-speed airflow that hits the hand blows up from the bottom of the hand insertion part. This is to maintain a strong blown air flow from the gap as if it was blown out.
[0034]
The portion facing the side edge 2m of the inner wall part 2b of the mating part (or fitting part) in the vicinity of the boundary with the 2e and 2f parts of the inner wall parts 2a, 2c is formed with a gradient equal to the side edge 2m, and the inner wall part 2b When combined, they are in close contact with the surface of the side edge 2m. However, there are minute gaps due to the manufacturing tolerances of the parts that are in close contact.
The end of the side edge 2m is in close contact with the surfaces 2e and 2f of the inner wall parts 2a and 2c.
[0035]
In the hand drying device configured as described above, when the hand is inserted into the hand insertion portion 2 to the vicinity of the wrist, the sensors 12a and 12b detect the hand, and the blower 30 is activated, thereby filtering from the air inlet 41 of the chamber 40. Air passes through 42 and passes through the chamber 40 and is sucked into the blower 30. In the blower 30, the air becomes high-pressure air, flows through the exhaust duct 32, high-speed air is ejected from the nozzles 18 a and 18 b, hits the hand inserted into the hand insertion portion 2, and drops water attached to the surface of the hand into water droplets As it is blown away, the hands are dried.
[0036]
In addition, high-pressure air in the exhaust duct 32 is joined with the inner wall part 2b (or a fitting part) from an ejection hole 2k provided through the wall near the boundary between the 2e and 2f parts of the inner wall parts 2a and 2c. ) The jetted high-pressure air stream prevents the blown water from entering the manual insertion portion, and at the same time, prevents dust and dirt from adhering to the gap.
[0037]
Further, the pressure of the high-pressure airflow is also applied to the space 2d in which the electrical components are stored, and the pressure in the space 2d is increased to prevent water from entering and protect the electrical components.
When the hand dries and the hand is completely removed from the hand insertion part 2, the sensors 12 a and 12 b do not detect the hand, so the blower 30 stops and the blowing stops.
[0038]
Even if the gap of the mating portion (or fitting portion) of the manual insertion portion is widened by the high pressure air flow in the exhaust duct 32 being ejected into the gap of the mating portion (or fitting portion) with the inner wall part 2b. The effect of preventing water intrusion is not reduced, and a hand dryer that can omit a sealing material such as a packing material can be obtained.
[0039]
【The invention's effect】
According to the present invention, the mating part of the inner wall part and the inner wall part constituting the manual insertion part is fitted with a concave part on one side and a fitting part to be inserted into the concave part on the other side, and the fitting part is drained. By preventing the intrusion of water into the product without using seal parts such as packing by blocking the water intruding from the gap by capillarity and preventing water from entering the inside. There is an effect that can.
[0040]
In addition, since the opening direction of the fitting portion of the draining portion is opened to the manual insertion portion side, the upper surface of the opening is higher than the position where water enters, so that a high water entry preventing effect is achieved. can get.
[0041]
Further, by supplying high-pressure air to the mating part (or fitting part) between the inner wall part and the inner wall part, there is an effect that water entering the gap is blown off and water can be prevented from entering the inside.
[0042]
Since the surfaces of the mating part (or fitting part) of the inner wall part and the inner wall part are formed at a predetermined angle with respect to the inner wall surface, it is possible to easily attach the surfaces in close contact with each other.
[0043]
Since the surface of the mating part (or fitting part) of the inner wall part and the inner wall part is configured so that the hand insertion part side is high and the back side is lower downward, the direction of the high-speed air flow that blows out from the gap and the nozzle Since the blowing direction is the same as the wind blown from the bottom of the hand insertion portion when it is blown out and does not interfere with the high-speed airflow blowing from the gap, there is an effect that a strong blown airflow can be maintained.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a hand dryer according to the present invention.
FIG. 2 is a cross-sectional view showing an inner wall part fitting portion of a manual insertion portion of the present invention.
FIG. 3 is a cross-sectional view showing another shape of the inner wall part fitting portion of the manual insertion portion of the present invention.
FIG. 4 is a cross-sectional view illustrating a configuration in which a high-pressure air flow is blown to a mating portion (or fitting portion) of an inner wall part of a manual insertion portion according to the present invention.
FIG. 5 is a cross-sectional view showing a joining portion of inner wall parts of a conventional manual insertion portion.
FIG. 6 is a cross-sectional view of a conventional hand dryer.
[Explanation of symbols]
2 hand insertion part, 2a, 2b, 2c inner wall parts, 32 exhaust duct, 2d space, 2g projecting piece, 2h recess, 2i fitting part, 2j draining part, 2k ejection hole, 2m side edge.

Claims

A blower that generates a high-pressure air flow provided in the main body and a hand that blows out the high-pressure air flow as a high-speed air flow in a hand insertion portion that is open on an upper surface and a side surface of the main body and has a size that can accommodate a hand In a hand dryer having a nozzle respectively disposed on mutually facing surfaces of the insertion portion, and an air passage for sending the high-pressure air flow from the blower to the nozzle, an inner wall component and an inner wall component constituting the hand insertion portion, The inner wall part is provided with a recess, the other inner wall part is provided with a fitting portion for inserting the end portion into the recess, the fitting portion is fitted into the recess, and the recess and the fitting are fitted. A first gap and a second gap between the first gap and the drainage section for stopping water from entering between the first gap and the second gap, the first gap being the drainage section. On the lower end side of the hand insertion portion side, the second gap is the concave portion The constructed between the fitting portion, the water drainage portion than the first gap, the height, the hand drying apparatus, characterized in that the depth is greater space.

The hand-drying device according to claim 1, wherein the shape of the draining portion on the side of the fitting portion is U-shaped so that the opening direction opens toward the hand insertion portion.

The manual insertion part which opens on the upper surface and the side surface of the main body and has a size capable of storing a hand and which blows out the high-pressure air flow as a high-speed air flow and a blower for generating a high-pressure air flow provided in the main body. In a hand dryer having a nozzle respectively disposed on mutually facing surfaces of the unit and an air passage for sending the high-pressure air flow from the blower to the nozzle, the mating part of the inner wall part and the inner wall part of the hand insertion part or A hand-drying device comprising means for supplying a high-pressure air flow to the fitting portion .

The hand according to claim 3, wherein the mating portion of the inner wall part and the inner wall part of the hand insertion part or the opposing surface of the fitting part is formed to form a predetermined angle with respect to the inner wall part surface. Drying equipment .

The mating part of the inner wall part and the inner wall part of the hand insertion part or the facing surface of the fitting part is configured such that the hand insertion part side is high upward and the back side away from the hand insertion part side is low downward. The hand dryer according to claim 3 .