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JP4197461B2 - Hair dryer - Google Patents
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JP4197461B2 - Hair dryer - Google Patents

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Publication number
JP4197461B2
JP4197461B2 JP2003156586A JP2003156586A JP4197461B2 JP 4197461 B2 JP4197461 B2 JP 4197461B2 JP 2003156586 A JP2003156586 A JP 2003156586A JP 2003156586 A JP2003156586 A JP 2003156586A JP 4197461 B2 JP4197461 B2 JP 4197461B2
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Japan
Prior art keywords
nozzle
curved wall
air
hair dryer
wall
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JP2003156586A
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Japanese (ja)
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JP2004357763A (en
Inventor
謙治 遠藤
尚典 明石
敬三 水口
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Maxell Ltd
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Kyushu Hitachi Maxell Ltd
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Priority to JP2003156586A priority Critical patent/JP4197461B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、気流収束用のノズルを備えていて、ノズルの周壁に周辺空気を取り入れるための空気導入口を有するヘアードライヤーに関する。
【0002】
【従来の技術】
ヘアードライヤーにおいて、本体ケースから吹き出る空気流を利用して、周辺空気を内部へ取り入れるようにしたノズルは公知である(特許文献1参照)。そこでは、本体ケースに装着されるノズル本体と、ノズル本体の前端に固定される出口筒とでノズルを構成している。ノズル本体の前端は、左右一対の絞り壁と、両絞り壁の上下を滑らかに接続する湾曲壁とで、縦長の扁平筒状に形成してあり、左右の絞り壁と、絞り壁に外嵌する出口筒との間に空気導入口が形成されている。ノズルは本体ケースに対して圧嵌装着される。
【0003】
【特許文献1】
登録実用新案第3014299号公報(段落番号0017、図1)
【0004】
【発明が解決しようとする課題】
特許文献1では、左右の絞り壁に空気導入口が開口しているので、扁平に絞られた熱風の周囲を外部空気で包み込んで温度および湿度が調整された温風を供給できる。しかし、空気流を扁平に絞り込む絞り壁の左右位置、つまり他の部分に比べて流速が速く圧力が最も低い個所に空気導入口を設けるので、外部空気の流入量が多く、ノズルから吹き出る2次吹出風に含まれる外部空気の割合が多過ぎるきらいがある。空気導入口の開口面積が大きいことも、外部空気の割合が多くなる一因になっている。
【0005】
ヘアードライヤーを温風モードで連続使用するとき、ノズルは加熱されて熱くなるが、ノズル内へ導入される常温の空気で絞り壁を冷却できるので、使用直後であっても絞り壁を手で持って本体ケースから分離することができる。しかし、ノズルを本体ケースから取り外す場合には、つかみやすく、しかも力を入れやすいことから、上下の湾曲壁を握り締めて分離操作することが多く、使用直後にノズルを取り外す場合に熱い思いをすることになる。湾曲壁はノズル内に導入される空気によって殆ど冷却されないうえ、絞り壁に比べて分厚く蓄熱量が大きく冷えにくいからである。
【0006】
本発明の目的は、外部空気の流入量を規制して温度および湿度が程よく調整された温風を供給でき、ヘアードライヤーを温風モードで連続使用した直後でも、ノズルを握り締めて分離操作することが可能なヘアードライヤーを提供するにある。
【0007】
【課題を解決するための手段】
本発明のヘアードライヤーでは、本体ケース1の吹出口12に、空気流を収束するノズル2が設けてある。そのノズル2は、入口側から出口側に向かって先すぼまり状に傾斜する左右一対の収束壁45と、両収束壁45の上下を滑らかに接続する湾曲壁46とを備えており、湾曲壁46の出口寄り周面に空気導入口47が、ノズル2の内外面を連通する状態で開口している。湾曲壁46の入口側から空気導入口47に至る壁面に、周囲壁より凹むガイド凹部48を形成する。ガイド凹部48に、突起50を突出形成する。
【0008】
湾曲壁46は、両収束壁45の前部上下を滑らかに接続する前湾曲壁46aと、両収束壁45の残部上下を滑らかに接続する後湾曲壁46bとで構成する。前湾曲壁46aの上下間隔は、後湾曲壁46bの上下間隔より大きく寸法設定されていて、前湾曲壁46aと後湾曲壁46bとの間に段差部分が形成されており、この前記段差部分に空気導入口47が開口している。
【0009】
起50は、ノズル内部の空気の流れとほぼ平行な前後に長いリブ50にすることができる。
【0010】
前記リブ50は、ガイド凹部48の内底壁から前湾曲壁46aに向かって上り傾斜状に形成することができる。そして、リブ50は、空気導入口47の左右中央において前湾曲壁46aの後縁と後湾曲壁46bの前縁とを繋ぐことにより、両湾曲壁46a・46bを一体化している。
【0011】
ノズル2は、入口側の連結筒35と、連結筒35に外嵌固定される透明ないし半透明のノズル本体36とで構成し、連結筒35とノズル本体36との間に装飾シートT1を介装することができる。
【0012】
【発明の作用効果】
本発明に係るヘアードライヤーでは、出口側へ向かって先すぼまり状に傾斜する左右一対の収束壁45と、両収束壁45の上下を滑らかに接続する湾曲壁46とを備えたノズル2において、湾曲壁46の出口寄り周面に空気導入口47が開口しているので、従来のノズルと同様に、吹出口12から送出される1次吹出風を非円形状に収束しながら、空気導入口47から流入する空気量を抑止できる。湾曲壁46の内面における空気の流速は、収束壁45の内面における空気の流速より緩やかで、その分だけ圧力の低下が小さいからである。従って、本発明によれば、ノズル内部への外部空気の流入量を規制して温度および湿度が程よく調整された温風を供給できる。
【0013】
図9に示すように、上下の湾曲壁46を握り締めてノズル2を本体ケース1から取り外す場合には、空気導入口47の周辺の湾曲壁46がノズル2内へ流れ込む常温の空気によって冷却されるので、ヘアードライヤーを温風モードで連続使用した直後であっても、ノズル2を確りと握り締めて容易に分離操作することができる(請求項1)。
【0014】
前湾曲壁46aと後湾曲壁46bとで湾曲壁46を構成し、前湾曲壁46aの上下間隔を後湾曲壁46bの上下間隔より大きく寸法設定することにより、前後の湾曲壁46a・46b間に段差部分を形成し、この段差部分に空気導入口47を開口したノズル2によれば、後湾曲壁46bを先すぼまり状に形成する必要もなく、空気導入口47を後湾曲壁46bの前端外面に形成できるので、空気導入口47に作用する負圧力を緩和でき、その分だけ外部空気の流入を程よく抑止できる。ノズル2の成形が容易化する利点もある。上下の湾曲壁46を握り締める際に、図9に示すように指先を前湾曲壁46aに引っ掛けることができるので、ノズル2の取り外し操作も簡便に行える(請求項2)。
【0015】
後湾曲壁46bの入口側から空気導入口47にわたってガイド凹部48を形成し、ガイド凹部48に突起50を形成したノズル2によれば、空気導入口47へ向かって流れ込む常温の空気流で突起50を冷却できるので、ガイド凹部48の冷却を促進して低温に維持できる。従って、上下の湾曲壁46を握り締めてノズル2を取り外す際に、熱い思いをすることがない(請求項3)。
【0016】
前記突起50が、ノズル内部の空気の流れとほぼ平行な前後に長いリブで形成されていると、空気導入口47へ向かって流れ込む外部空気の流動方向を該リブ50で規制して、ノズル内部の空気の流れと同じ向きに指向させることができるので、ノズル2で絞られた1次吹出風の流れを乱すことなく外部空気を混合できる。指先をリブ50にあてがった状態でノズル2を回動操作することにより、出口の向きを本体ケース1の中心軸線の回りに簡便に変更できる利点もある(請求項4)。
【0017】
ガイド凹部48の内底壁から前湾曲壁46aに向かって上り傾斜状にリブ50が形成されていると、上下の湾曲壁46を握り締めてノズル2を取り外す際に、リブ50に比べて温度が高いガイド凹部48の内底壁に指先が触れるのを極力避けることができるうえ、リブ50と前湾曲壁46aが指先に食い込むので、ノズル2をより簡単に取り外せる(請求項5)。
【0018】
空気導入口47の左右中央において前湾曲壁46aの後縁と後湾曲壁46bの前縁とをリブ50で繋いで、両湾曲壁46a・46bを一体化してあると、空気導入口47に臨む両湾曲壁46a・46bの構造強度が向上し、落下衝撃などによる破損をよく防止できる(請求項6)。
【0019】
連結筒35と、連結筒35に外嵌固定される透明ないし半透明のノズル本体36とでノズル2が構成されていると、ノズル2の入口側筒壁における断熱効果が向上して、ノズル2の周面温度をより低い温度状態に維持できる。連結筒35とノズル本体36との間に装飾シートT1を介装することにより、透明ないし半透明のノズル本体36を通して装飾シートT1を視認できるので、ノズル2をデザイン要素として、ヘアードライヤーの外観上の体裁を向上できる(請求項7)。
【0020】
【発明の実施の形態】
図1ないし図9は本発明に係るヘアードライヤーの実施例を示す。図2においてヘアードライヤーは、横長筒状の本体ケース1と、その前端に着脱可能に装着されるノズル2と、本体ケース1の下面後ろ側に設けたグリップ3とを有する。
【0021】
グリップ3の前面には、上下スライド可能なスイッチノブ4が設けてある。スイッチノブ4を切り換え操作することにより、風量およびヒーター温度の制御と、イオン発生装置への通電状態をオン・オフできる。グリップ3の内部には、先のスイッチノブ4で切り換え操作されるスイッチなどを収容してある。図2の想像線で示すように、グリップ3は軸5を中心にして本体ケース1に対して折り畳み可能に連結してある。
【0022】
本体ケース1は、その殆どを占める円筒状の導風ケース1Aと、導風ケース1Aの後端開口に圧嵌装着されるファンケース1Bとで構成する。図2および図3において本体ケース1の内部には、軸流形のファン7と、ファン駆動用のモーター8と、ファン7で生起した空気流を過熱するヒーター9と、イオン発生装置などが収容してある。ファン7で生起される空気流は、本体ケース1の後端に設けた吸込グリル11から導入され、本体ケース1の前端に開口した断面円形の吹出口12から吹き出る。吹出口12から吹き出た1次吹出風はノズル2で扁平に収束され、ノズル内に吸引された周辺空気とともに吹き出て2次吹出風を形成する。符号13は吹出グリルである。
【0023】
図3においてモーター8は、モーターホルダー15に支持されており、モーターホルダー15は導風ケース1Aに内嵌装着されて、ファンケース1Bで固定してある。モーターホルダー15には、ファン7で捻られた空気流を整流する6個の翼片16が放射状に設けられている。
【0024】
ヒーター9は、ヒーターホルダー18の周囲に巻き付け装着されて、その外面が円筒状の絶縁カバー19と、金属板製のヒーターカバー20とで覆ってある。ヒーターホルダー18は、モーターホルダー15の前端に隣接してモーター8に外嵌装着される筒体21と、筒体21の周面に沿って放射状に係合装着される6個の絶縁板22とで構成する。筒体21は断熱性と電気絶縁性に優れたプラスチック材で形成する。絶縁板21は粉状の雲母を板状に固めたうえで所定形状に打ち抜き形成する。
【0025】
ヒーターホルダー18が筒体21と絶縁板22とで構成されていると、筒体21と絶縁カバー19との間に円筒状の送風通路Sを区画して、ヒーター16の殆どの部分を筒体21の周面に臨ませることができる。つまり、ファン7から送給される空気流を絶縁カバー19、筒体21および絶縁板21で流動案内して、送風通路S内を通過する空気流を安定させ、ヒーター16による空気加熱をむらなく行えるようにしている。送風通路Sの前後長さをできるだけ大きくして、気流を安定化するために、筒体21の前後長さは導風ケース1Aの前後長さの概ね6割強とし、絶縁板22の前端を吹出グリル13の近傍に臨ませてある。
【0026】
ファン7で生起した空気流と共に、マイナスイオンを毛髪に吹き付けるためのイオン発生装置を有する。そのイオン発生装置は、吹出グリル13の内面に配置した電極ホルダー24で支持される電極ユニット25と、先の筒体21の内部に配置される樹脂モールド30とからなる。樹脂モールド22には、整流回路やパルス発生回路などで構成されるイオン発生回路と、トランスなどが封入されて1個のユニット部品としてある。図1において電極ユニット25は、プラスチック製のホルダー26と、ホルダー26に固定される中央電極27と、リング状の周囲電極(グランド電極)28と、両電極27・28の間の空間を絶縁遮断する誘電筒29などで構成されている。
【0027】
上記のイオン発生装置によれば、空気中の酸素をマイナスに帯電させてマイナスイオン化でき、マイナスイオン化した酸素と結合する水分を髪に浸透させて水分率を高めることができる。つまり、髪を乾燥しながら髪に潤いを与えることができる。
【0028】
吹出グリル13や電極ホルダー24の表面にマイナスイオンが接触してマイナスに帯電すると、帯電したマイナス電荷とマイナスイオンとが反発しあうため、ヘアードライヤーのマイナスイオンの放出量が減少する。
【0029】
こうしたマイナス電荷の帯電を解消するために、図2に示すように、グリップ3の外面に導電性を有するアース片31を設け、吹出グリル13とアース片31とを導電路を介して導通し、吹出グリル13や電極ホルダー24に帯電したマイナス電荷を、アース片31と人体を介してグランドアースできるようにしている。なお、人体に帯電したマイナス電荷は、床や壁などを介して逃がすことができる。
【0030】
アース片31は、上下に長い木の葉形のプラスチック成形品からなり、導電性を付与するためにその表面全体にメッキ層を被覆してある。アース片31は、グリップ3に対して分離可能に係合装着される装飾カバー32に固定してある。アース片31と吹出グリル13とは、吹出グリル13に接触するヒーターカバー20と、ヒーターカバー20とアース片31を接続するリード線33(図3参照)を介して電気的に接続する。このように、ヒーターカバー18を利用して、吹出グリル13をアース片31に接続すると、導風ケース1A内でリード線33を配線する必要がなく、そのひき回し長さを短くできるので、ヘアードライヤーの組立の手間を省くことができる。
【0031】
図4ないし図8においてノズル2は、吹出口12に嵌め込み装着される連結筒35と、連結筒35に外嵌固定されるノズル本体36と、両者35・36の嵌合面間に介装される装飾シートT1などで構成する。連結筒35およびノズル本体36は、それぞれ透明ないし半透明のプラスチック材で形成する。連結筒35は前後長さが短い断面円形の外筒37と、前後に長い断面楕円形の内筒38と、両者37・38を繋ぐ4個の放射リブ39とを一体に備えている。
【0032】
内筒38の内面には、装飾シートT2と押え筒41とが分離不能に組み付けてある。外筒37の後端周面の上下には、吹出口12に設けた係止段部42と係合する円弧リブ状の突起43が形成してある。ノズル2の内部を内外二重に区分して、イオン発生装置で生成したマイナスイオンの回りを空気流で包みこむために内筒38を設けてある。
【0033】
ノズル本体36は、ノズル2の入口側から出口側に向かって先すぼまり状に傾斜する左右一対の収束壁45と、両収束壁45の上下を滑らかに接続する湾曲壁46とを有し、湾曲壁46の出口寄り周面に周辺空気を取り入れるための空気導入口47が開口している。
【0034】
湾曲壁46は、両収束壁45の前部上下を滑らかに接続する前湾曲壁46aと、両収束壁45の残部上下を滑らかに接続する後湾曲壁46bとで構成する。前湾曲壁46aの上下間隔は、後湾曲壁46bの上下間隔より大きく寸法設定することにより、前後の湾曲壁46a・46bの間に段差部分を形成し、この段差部分に空気導入口47が開口している。図5に示すように、前湾曲壁46aは縦方向に長い楕円形状に形成し、後湾曲壁46bは後端が円形で、前端が縦方向に長い楕円形状に形成されて、その中途部が円形から楕円形へと滑らかに変化するように形成してある。
【0035】
上記のように、1次吹出風をノズル2で縦長楕円状に収束すると、出口付近における空気流の流速が増し、その分だけ圧力が低下する。従って、空気導入口47の近傍付近の空気は、空気導入口47からノズル内へ流入して1次吹出風とともに出口から吹き出る。外部空気の流入を円滑化するために、後湾曲壁46bの入口側から空気導入口47に至る壁面を周囲壁より凹ませてガイド凹部48を形成する。
【0036】
図1においてガイド凹部48は、空気導入口47に向かって緩やかに下り傾斜する状態で形成してあり、その左右中央にリブ(突起)50を形成する。
【0037】
図4に示すようにリブ50は、ガイド凹部48の後端から前湾曲壁46aにわたって、ノズル内部の空気の流れと平行になる状態で形成する。側面側から見たリブ50は、ガイド凹部48の内底壁から前湾曲壁46aに向かって上り傾斜状になる。リブ50の前部は、前湾曲壁46aの後縁と後湾曲壁46bの前縁とを繋いで両湾曲壁46a・46bを一体化し、構造強度を増すのに役立っている。
【0038】
ノズル2を本体ケース1から取り外す場合には、図9に示すように、上下の湾曲壁46を親指と人差し指で上下に握り締めて、ノズル2を導風ケース1A離れる向き(矢印P方向)に引っ張りながら上下いずれかへこじると、係止段部42と突起43との係合が外れて、ノズル2を吹出口12から分離できる。このとき空気導入口47の周辺の湾曲壁46がノズル2内へ流れ込む常温の空気によって冷却されるので、ヘアードライヤーを温風モードで連続使用した直後であっても、ノズル2を確りと握り締めて容易に分離操作することができる。
【0039】
ノズル2を吹出口12に装着する場合には、連結筒35の後端側筒壁を吹出口12にあてがった状態で、ノズル2の全体を矢印Pとは逆に、本体ケース1に向かって押し込み操作することにより、突起43が係止段部42を乗越えてパチンと係合する。この装着状態において、係止段部42は周回状に形成してあるので、ノズル2は本体ケース1の中心軸線の回りに自由に回転操作でき、任意の回転位置を位置保持できる。
【0040】
連結筒35とノズル本体36とでノズル2を構成し、両者35・36の間に装飾シートT1を介装すると、吹出口12に近い部分のノズル2の構造を3層構造として、断熱効果をさらに高めることができるので、ノズル2を取り外す際に熱い思いをすることがない。
【0041】
上記の実施例以外に、ノズル本体36と連結筒35とは一体に成形することができる。イオン発生装置を備えていないヘアードライヤーの場合には、連結筒35の内筒38を省略することができる。ガイド凹部48に設ける冷却促進用の突起50は、図10(a)に示すようにノズル内部の空気の流れと直交するリブで形成することができる。さらに、図10(b)に示すように複数個の突起群で突起50を形成し、前湾曲壁46aとガイド凹部48を前後に短いリブ50aで一体化することができる。
【図面の簡単な説明】
【図1】ノズルとその周辺部構造を示す縦断側面図である。
【図2】ヘアードライヤーの側面図である。
【図3】本体ケースの縦断側面図である。
【図4】ノズルの分解斜視図である。
【図5】ノズルの正面図である。
【図6】ノズルの一部破断側面図である。
【図7】図6におけるA−A線断面図である。
【図8】図6におけるB−B線断面図である。
【図9】ノズルの分離要領を示す側面図である。
【図10】突起の変形例を示すノズルの平面図である。
【符号の説明】
1 本体ケース
2 ノズル
12 吹出口
35 連結筒
36 ノズル本体
45 収束壁
46 湾曲壁
46a 前湾曲壁
46b 後湾曲壁
47 空気導入口
48 ガイド凹部
50 リブ
T1 装飾シート
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hair dryer having a nozzle for airflow convergence and having an air inlet for taking in ambient air into the peripheral wall of the nozzle.
[0002]
[Prior art]
In a hair dryer, a nozzle is known in which ambient air is taken into the interior using an air flow blown from a main body case (see Patent Document 1). There, the nozzle is composed of a nozzle body mounted on the body case and an outlet tube fixed to the front end of the nozzle body. The front end of the nozzle body consists of a pair of left and right diaphragm walls and a curved wall that smoothly connects the top and bottom of both diaphragm walls. An air inlet is formed between the outlet cylinder. The nozzle is press-fitted to the main body case.
[0003]
[Patent Document 1]
Registered Utility Model No. 3014299 (paragraph number 0017, FIG. 1)
[0004]
[Problems to be solved by the invention]
In Patent Document 1, since the air inlets are opened in the left and right throttle walls, it is possible to supply hot air whose temperature and humidity are adjusted by wrapping the periphery of the hot air narrowed flatly with external air. However, because the air inlet is provided at the left and right positions of the throttle wall that narrows the air flow flat, that is, at the place where the flow velocity is fast and the pressure is the lowest compared to other parts, the amount of external air inflow is large and the secondary blown out from the nozzle There is a tendency that the ratio of the external air contained in the blowing wind is too high. The large opening area of the air inlet also contributes to an increased proportion of external air.
[0005]
When the hair dryer is used continuously in the warm air mode, the nozzle is heated and becomes hot, but the diaphragm wall can be cooled with air at normal temperature introduced into the nozzle, so you can hold the diaphragm wall by hand even immediately after use. Can be separated from the main body case. However, when removing the nozzle from the main body case, it is easy to grasp and easy to apply force, so the upper and lower curved walls are often squeezed and separated. become. This is because the curved wall is hardly cooled by the air introduced into the nozzle and is thicker than the throttle wall and has a large amount of stored heat and is difficult to cool.
[0006]
The object of the present invention is to supply hot air whose temperature and humidity are moderately regulated by regulating the inflow amount of external air, and to perform the separation operation by clamping the nozzle even immediately after the hair dryer is used continuously in the warm air mode. There is a hair dryer available.
[0007]
[Means for Solving the Problems]
In the hair dryer of this invention, the nozzle 2 which converges an airflow is provided in the blower outlet 12 of the main body case 1. As shown in FIG. The nozzle 2 includes a pair of left and right converging walls 45 inclined in a tapered shape from the inlet side toward the outlet side, and a curved wall 46 that smoothly connects the upper and lower sides of both the converging walls 45. An air inlet 47 is opened on the peripheral surface near the outlet of the wall 46 so as to communicate with the inner and outer surfaces of the nozzle 2 . A guide recess 48 that is recessed from the surrounding wall is formed on the wall surface from the inlet side of the curved wall 46 to the air inlet 47. A protrusion 50 is formed to protrude in the guide recess 48.
[0008]
The curved wall 46 includes a front curved wall 46a that smoothly connects the upper and lower front portions of both converging walls 45, and a rear curved wall 46b that smoothly connects the upper and lower portions of both converging walls 45. The vertical distance of the front curved wall 46a is set to be larger than the vertical distance of the rear curved wall 46b, and a step portion is formed between the front curved wall 46a and the rear curved wall 46b. air inlet port 47 is you are opening.
[0009]
Impact force 50, Ru can be a long rib 50 in the front-rear substantially parallel to the air flow inside the nozzle.
[0010]
The rib 50 is Ru may be formed on the upstream inclined toward the front curved wall 46a from the inner bottom wall of the guide recess 48. Then, the ribs 50, by connecting the front edge of the edge and the trailing curved wall 46b after the previous curved wall 46a in the left-right center of the air inlet openings 47, that have integrated both the curved walls 46a · 46b.
[0011]
The nozzle 2 is composed of a connecting cylinder 35 on the inlet side and a transparent or translucent nozzle body 36 that is externally fixed to the connecting cylinder 35, and a decorative sheet T <b> 1 is interposed between the connecting cylinder 35 and the nozzle body 36. Ru can do so.
[0012]
[Effects of the invention]
In the hair dryer according to the present invention, in the nozzle 2 having a pair of left and right converging walls 45 that incline in a tapered shape toward the outlet side, and a curved wall 46 that smoothly connects the upper and lower sides of both converging walls 45. Since the air inlet 47 is opened on the peripheral surface of the curved wall 46 near the outlet, air is introduced while converging the primary blowing air sent from the outlet 12 into a non-circular shape as in the conventional nozzle. The amount of air flowing from the port 47 can be suppressed. This is because the flow velocity of air on the inner surface of the curved wall 46 is gentler than the flow velocity of air on the inner surface of the converging wall 45, and the pressure drop is small accordingly. Therefore, according to the present invention, it is possible to supply hot air whose temperature and humidity are moderately adjusted by regulating the amount of external air flowing into the nozzle.
[0013]
As shown in FIG. 9, when the nozzle 2 is removed from the main body case 1 by clamping the upper and lower curved walls 46, the curved wall 46 around the air inlet 47 is cooled by normal temperature air flowing into the nozzle 2. Therefore, even immediately after the hair dryer has been used continuously in the warm air mode, the nozzle 2 can be firmly clamped and easily separated (Claim 1).
[0014]
The front curved wall 46a and the rear curved wall 46b constitute the curved wall 46, and the vertical distance of the front curved wall 46a is set to be larger than the vertical distance of the rear curved wall 46b. According to the nozzle 2 in which the step portion is formed and the air introduction port 47 is opened in the step portion, it is not necessary to form the rear curved wall 46b in a tapered shape, and the air introduction port 47 is formed on the rear curved wall 46b. Since it can be formed on the outer surface of the front end, the negative pressure acting on the air inlet 47 can be relieved, and the inflow of external air can be moderately suppressed accordingly. There is also an advantage that the molding of the nozzle 2 is facilitated. When the upper and lower curved walls 46 are clamped, the fingertip can be hooked on the front curved wall 46a as shown in FIG. 9, so that the nozzle 2 can be easily removed (Claim 2).
[0015]
According to the nozzle 2 in which the guide concave portion 48 is formed from the inlet side of the rear curved wall 46 b to the air introduction port 47 and the projection 50 is formed in the guide concave portion 48, the projection 50 is generated by the room temperature air flow flowing toward the air introduction port 47. Therefore, the cooling of the guide recess 48 can be promoted and maintained at a low temperature. Therefore, when the upper and lower curved walls 46 are squeezed and the nozzle 2 is removed, there is no hot feeling (claim 3).
[0016]
When the protrusion 50 is formed of a long rib in front and rear substantially parallel to the air flow inside the nozzle, the flow direction of the external air flowing into the air introduction port 47 is regulated by the rib 50, and the inside of the nozzle Therefore, the external air can be mixed without disturbing the flow of the primary blowing air constricted by the nozzle 2. There is also an advantage that the direction of the outlet can be easily changed around the central axis of the main body case 1 by rotating the nozzle 2 with the fingertip applied to the rib 50 (Claim 4).
[0017]
If the rib 50 is formed so as to be inclined upward from the inner bottom wall of the guide recess 48 toward the front curved wall 46 a, the temperature is higher than that of the rib 50 when the nozzle 2 is removed by grasping the upper and lower curved walls 46. It is possible to avoid the fingertip from touching the inner bottom wall of the high guide recess 48 as much as possible, and the rib 50 and the front curved wall 46a bite into the fingertip, so that the nozzle 2 can be removed more easily (Claim 5).
[0018]
When the rear edge of the front curved wall 46a and the front edge of the rear curved wall 46b are connected by the rib 50 at the center of the left and right of the air inlet 47, both the curved walls 46a and 46b face the air inlet 47. The structural strength of both the curved walls 46a and 46b is improved, and damage due to a drop impact or the like can be well prevented (claim 6).
[0019]
When the nozzle 2 is constituted by the connecting cylinder 35 and the transparent or semi-transparent nozzle body 36 fitted and fixed to the connecting cylinder 35, the heat insulating effect on the inlet side cylinder wall of the nozzle 2 is improved, and the nozzle 2 Can be maintained at a lower temperature. By interposing the decorative sheet T1 between the connecting cylinder 35 and the nozzle body 36, the decorative sheet T1 can be visually recognized through the transparent or translucent nozzle body 36. Therefore, the nozzle 2 is used as a design element to improve the appearance of the hair dryer. Can be improved (claim 7).
[0020]
DETAILED DESCRIPTION OF THE INVENTION
1 to 9 show an embodiment of a hair dryer according to the present invention. In FIG. 2, the hair dryer includes a horizontally long main body case 1, a nozzle 2 that is detachably attached to the front end thereof, and a grip 3 provided on the rear side of the lower surface of the main body case 1.
[0021]
A switch knob 4 that can slide up and down is provided on the front surface of the grip 3. By switching the switch knob 4, the air volume and heater temperature can be controlled and the energization state of the ion generator can be turned on / off. The grip 3 accommodates a switch that is switched by the previous switch knob 4. As shown by an imaginary line in FIG. 2, the grip 3 is connected to the main body case 1 so as to be foldable about the shaft 5.
[0022]
The main body case 1 includes a cylindrical air guide case 1A that occupies most of the main body case 1 and a fan case 1B that is press-fitted to the rear end opening of the air guide case 1A. 2 and 3, the main body case 1 contains an axial flow fan 7, a motor 8 for driving the fan, a heater 9 for overheating the air flow generated by the fan 7, and an ion generator. It is. The air flow generated by the fan 7 is introduced from a suction grill 11 provided at the rear end of the main body case 1 and is blown out from a circular outlet 12 having a circular cross section opened at the front end of the main body case 1. The primary blown air blown out from the blower outlet 12 is flattened by the nozzle 2 and blown out together with the ambient air sucked into the nozzle to form a secondary blown air. Reference numeral 13 denotes an outlet grill.
[0023]
In FIG. 3, the motor 8 is supported by a motor holder 15, and the motor holder 15 is fitted in the air guide case 1A and fixed by the fan case 1B. The motor holder 15 is provided with six wing pieces 16 that radially rectify the air flow twisted by the fan 7.
[0024]
The heater 9 is wound around the heater holder 18 and covered with a cylindrical insulating cover 19 and a heater cover 20 made of a metal plate. The heater holder 18 is adjacent to the front end of the motor holder 15 and has a cylinder 21 that is externally attached to the motor 8, and six insulating plates 22 that are radially engaged and attached along the peripheral surface of the cylinder 21. Consists of. The cylinder 21 is made of a plastic material having excellent heat insulation and electrical insulation. The insulating plate 21 is formed by punching into a predetermined shape after solidifying powdery mica into a plate shape.
[0025]
When the heater holder 18 is composed of the cylindrical body 21 and the insulating plate 22, a cylindrical air passage S is defined between the cylindrical body 21 and the insulating cover 19, and most of the heater 16 is cylindrical. It can face 21 circumference. That is, the air flow supplied from the fan 7 is flow-guided by the insulating cover 19, the cylindrical body 21, and the insulating plate 21, the air flow passing through the air passage S is stabilized, and the air is not uniformly heated by the heater 16. I can do it. In order to stabilize the airflow by making the front and rear length of the air passage S as large as possible, the front and rear length of the cylindrical body 21 is approximately 60% of the front and rear length of the air guide case 1A, and the front end of the insulating plate 22 is It faces the blow grill 13.
[0026]
Along with the air flow generated by the fan 7, an ion generator for blowing negative ions onto the hair is provided. The ion generator includes an electrode unit 25 supported by an electrode holder 24 disposed on the inner surface of the blowing grill 13, and a resin mold 30 disposed inside the cylindrical body 21. The resin mold 22 encloses an ion generation circuit composed of a rectification circuit, a pulse generation circuit, and the like, a transformer, and the like as a single unit component. In FIG. 1, the electrode unit 25 includes an insulating shield for a plastic holder 26, a central electrode 27 fixed to the holder 26, a ring-shaped peripheral electrode (ground electrode) 28, and a space between the electrodes 27 and 28. The dielectric cylinder 29 is formed.
[0027]
According to the above ion generator, oxygen in the air can be negatively charged to be negatively ionized, and moisture combined with the negatively ionized oxygen can penetrate into the hair to increase the moisture content. In other words, the hair can be moisturized while being dried.
[0028]
When negative ions come into contact with the surface of the blow grill 13 or the electrode holder 24 and are negatively charged, the charged negative charges and negative ions repel each other, so that the amount of negative ions released from the hair dryer decreases.
[0029]
In order to eliminate such negative charge, as shown in FIG. 2, a grounding piece 31 having conductivity is provided on the outer surface of the grip 3, and the blowing grill 13 and the grounding piece 31 are conducted through a conductive path. The negative charges charged in the blowing grill 13 and the electrode holder 24 can be grounded through the ground piece 31 and the human body. It should be noted that negative charges charged on the human body can be released through the floor, walls, and the like.
[0030]
The ground piece 31 is made of a leaf-shaped plastic molded product having a long top and bottom, and the entire surface thereof is coated with a plating layer in order to impart conductivity. The ground piece 31 is fixed to a decorative cover 32 that is detachably engaged with the grip 3. The ground piece 31 and the blowout grill 13 are electrically connected via a heater cover 20 that contacts the blowout grill 13 and a lead wire 33 (see FIG. 3) that connects the heater cover 20 and the ground piece 31. Thus, if the blower grill 13 is connected to the ground piece 31 using the heater cover 18, it is not necessary to wire the lead wire 33 in the air guide case 1A, and the length of the lead wire 33 can be shortened. The labor of assembling the dryer can be saved.
[0031]
4 to 8, the nozzle 2 is interposed between a connecting cylinder 35 that is fitted and fitted into the outlet 12, a nozzle body 36 that is fitted and fixed to the connecting cylinder 35, and the fitting surfaces of both 35 and 36. The decorative sheet T1 or the like. The connecting cylinder 35 and the nozzle body 36 are each formed of a transparent or translucent plastic material. The connecting cylinder 35 is integrally provided with an outer cylinder 37 having a circular cross section with a short front and rear length, an inner cylinder 38 having an elliptical cross section with a long front and rear, and four radiating ribs 39 that connect both the members 37 and 38.
[0032]
On the inner surface of the inner cylinder 38, the decorative sheet T2 and the presser cylinder 41 are assembled inseparably. On the upper and lower sides of the rear end peripheral surface of the outer cylinder 37, arc-shaped rib-shaped protrusions 43 that engage with the engaging step portions 42 provided in the air outlet 12 are formed. An inner cylinder 38 is provided to divide the inside of the nozzle 2 into inner and outer doubles and wrap around the negative ions generated by the ion generator with an air flow.
[0033]
The nozzle body 36 has a pair of right and left converging walls 45 that incline in a tapered manner from the inlet side to the outlet side of the nozzle 2, and a curved wall 46 that smoothly connects the upper and lower sides of both converging walls 45. An air introduction port 47 for taking in ambient air is opened on the peripheral surface near the exit of the curved wall 46.
[0034]
The curved wall 46 includes a front curved wall 46a that smoothly connects the upper and lower front portions of both converging walls 45, and a rear curved wall 46b that smoothly connects the upper and lower portions of both converging walls 45. By setting the vertical distance of the front curved wall 46a to be larger than the vertical distance of the rear curved wall 46b, a step portion is formed between the front and rear curved walls 46a and 46b, and the air introduction port 47 is opened in this step portion. is doing. As shown in FIG. 5, the front curved wall 46a is formed in an elliptical shape that is long in the vertical direction, and the rear curved wall 46b is formed in an elliptical shape in which the rear end is circular and the front end is long in the vertical direction. It is formed so as to smoothly change from a circular shape to an elliptical shape.
[0035]
As described above, when the primary blowing air is converged into a vertically long ellipse shape by the nozzle 2, the flow velocity of the air flow near the outlet increases, and the pressure decreases accordingly. Accordingly, the air in the vicinity of the air inlet 47 flows into the nozzle from the air inlet 47 and blows out from the outlet together with the primary blowing air. In order to facilitate the inflow of external air, the guide recess 48 is formed by denting the wall surface from the inlet side of the rear curved wall 46b to the air inlet 47 from the surrounding wall.
[0036]
In FIG. 1, the guide recess 48 is formed in a state in which it gently descends and inclines toward the air introduction port 47, and a rib (projection) 50 is formed at the left and right center thereof.
[0037]
As shown in FIG. 4, the rib 50 is formed from the rear end of the guide recess 48 to the front curved wall 46a in a state parallel to the air flow inside the nozzle. The rib 50 viewed from the side surface is inclined upward from the inner bottom wall of the guide recess 48 toward the front curved wall 46a. The front portion of the rib 50 joins the rear edge of the front curved wall 46a and the front edge of the rear curved wall 46b to integrate both the curved walls 46a and 46b, and serves to increase the structural strength.
[0038]
When removing the nozzle 2 from the main body case 1, as shown in FIG. 9, the upper and lower curved walls 46 are gripped up and down with the thumb and forefinger, and the nozzle 2 is pulled away from the air guide case 1A (arrow P direction). On the other hand, if it is squeezed up or down, the engagement between the locking step 42 and the projection 43 is released, and the nozzle 2 can be separated from the outlet 12. At this time, the curved wall 46 around the air inlet 47 is cooled by the normal temperature air flowing into the nozzle 2, so that even after the hair dryer is used continuously in the warm air mode, the nozzle 2 is firmly clamped. Separation operation can be easily performed.
[0039]
When the nozzle 2 is attached to the air outlet 12, the entire nozzle 2 is directed toward the main body case 1 in the state where the rear end side cylinder wall of the connecting cylinder 35 is applied to the air outlet 12, opposite to the arrow P. By performing the pushing operation, the protrusion 43 gets over the locking step 42 and engages with the snap. In this mounted state, since the locking step portion 42 is formed in a circular shape, the nozzle 2 can be freely rotated around the central axis of the main body case 1 and can hold an arbitrary rotational position.
[0040]
When the connecting cylinder 35 and the nozzle body 36 constitute the nozzle 2 and the decorative sheet T1 is interposed between the two 35 and 36, the structure of the nozzle 2 near the outlet 12 is made into a three-layer structure, and the heat insulating effect is obtained. Since it can be further increased, there is no hot thought when removing the nozzle 2.
[0041]
In addition to the above embodiment, the nozzle body 36 and the connecting cylinder 35 can be formed integrally. In the case of a hair dryer that does not include an ion generator, the inner cylinder 38 of the connecting cylinder 35 can be omitted. The cooling promotion protrusion 50 provided in the guide recess 48 can be formed by a rib orthogonal to the air flow inside the nozzle as shown in FIG. Further, as shown in FIG. 10 (b), a plurality of protrusion groups can form a protrusion 50, and the front curved wall 46a and the guide recess 48 can be integrated with a short rib 50a in the front and rear direction.
[Brief description of the drawings]
FIG. 1 is a vertical side view showing a nozzle and its peripheral structure.
FIG. 2 is a side view of a hair dryer.
FIG. 3 is a longitudinal side view of a main body case.
FIG. 4 is an exploded perspective view of a nozzle.
FIG. 5 is a front view of a nozzle.
FIG. 6 is a partially broken side view of the nozzle.
7 is a cross-sectional view taken along line AA in FIG.
8 is a cross-sectional view taken along line BB in FIG.
FIG. 9 is a side view showing a nozzle separation procedure.
FIG. 10 is a plan view of a nozzle showing a modification of the protrusion.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body case 2 Nozzle 12 Outlet 35 Connecting cylinder 36 Nozzle main body 45 Converging wall 46 Curved wall 46a Front curved wall 46b Rear curved wall 47 Air inlet 48 Guide recessed part 50 Rib T1 Decoration sheet

Claims (6)

本体ケース(1)の吹出口(12)に、空気流を収束するノズル(2)が設けてあるヘアードライヤーであって、
ノズル(2)は、入口側から出口側に向かって先すぼまり状に傾斜する左右一対の収束壁(45)と、両収束壁(45)の上下を滑らかに接続する湾曲壁(46)とを備えており、
湾曲壁(46)の出口寄り周面に空気導入口(47)が、ノズル(2)の内外面を連通する状態で開口しており、
湾曲壁(46)の入口側から空気導入口(47)に至る壁面に、周囲壁より凹むガイド凹部(48)が形成されており、
ガイド凹部(48)に、突起(50)が突出形成されていることを特徴とするヘアードライヤー。
A hair dryer in which a nozzle (2) for converging airflow is provided at the air outlet (12) of the main body case (1),
The nozzle (2) includes a pair of left and right converging walls (45) inclined in a tapered shape from the inlet side toward the outlet side, and a curved wall (46) that smoothly connects the upper and lower sides of both converging walls (45). And
An air introduction port (47) is opened in a state in which the inner and outer surfaces of the nozzle (2) communicate with each other on the peripheral surface near the outlet of the curved wall (46) ,
A guide recess (48) that is recessed from the surrounding wall is formed on the wall surface from the inlet side of the curved wall (46) to the air inlet (47).
A hair dryer, wherein the guide recess (48) has a protrusion (50) protruding therefrom .
湾曲壁(46)が、両収束壁(45)の前部上下を滑らかに接続する前湾曲壁(46a)と、両収束壁(45)の残部上下を滑らかに接続する後湾曲壁(46b)とで構成されており、
前湾曲壁(46a)の上下間隔が、後湾曲壁(46b)の上下間隔より大きく寸法設定されていて、前湾曲壁(46a)と後湾曲壁(46b)との間に段差部分が形成されており、
この段差部分に空気導入口(47)が開口している請求項1記載のヘアードライヤー。
The curved wall (46) smoothly connects the front curved upper and lower parts of both converging walls (45) and the rear curved wall (46b) smoothly connects the remaining verticals of both converging walls (45). And consists of
The vertical distance of the front curved wall (46a) is set larger than the vertical distance of the rear curved wall (46b), and a step portion is formed between the front curved wall (46a) and the rear curved wall (46b). And
The hair dryer according to claim 1, wherein an air inlet (47) is opened in the stepped portion.
前記突起(50)が、ノズル内部の空気の流れとほぼ平行な前後に長いリブ(50)である請求項1または2記載のヘアードライヤー。The hair dryer according to claim 1 or 2, wherein the protrusion (50) is a rib (50) that is long in the front and rear directions substantially parallel to the air flow inside the nozzle . リブ(50)が、ガイド凹部(48)の内底壁から前湾曲壁(46a)に向かって上り傾斜状に形成されている請求項3記載のヘアードライヤー。The hair dryer according to claim 3 , wherein the rib (50) is formed to be inclined upward from the inner bottom wall of the guide recess (48) toward the front curved wall (46a) . リブ(50)が、空気導入口(47)の左右方向の中央において前湾曲壁(46a)の後縁と後湾曲壁(46b)の前縁とを繋いで、両湾曲壁(46a・46b)を一体化している請求項3または4記載のヘアードライヤー。The rib (50) connects the rear edge of the front curved wall (46a) and the front edge of the rear curved wall (46b) at the center in the left-right direction of the air inlet port (47), and both curved walls (46a, 46b). The hair dryer according to claim 3 or 4, wherein the hair dryer is integrated . ノズル(2)が、入口側の連結筒(35)と、連結筒(35)に外嵌固定される透明ないし半透明のノズル本体(36)とで構成されており、
連結筒(35)とノズル本体(36)との間に、装飾シート(T1)が介装されている請求項記載のヘアードライヤー
The nozzle (2) is composed of a connecting cylinder (35) on the inlet side, and a transparent or translucent nozzle body (36) fitted and fixed to the connecting cylinder (35).
Between coupling tube (35) and nozzle body (36), hair drier according to claim 1, wherein the decorative sheet (T1) is interposed.
JP2003156586A 2003-06-02 2003-06-02 Hair dryer Expired - Lifetime JP4197461B2 (en)

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