JP2004121823A - Toothbrush - Google Patents

Toothbrush Download PDF

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Publication number
JP2004121823A
JP2004121823A JP2003185010A JP2003185010A JP2004121823A JP 2004121823 A JP2004121823 A JP 2004121823A JP 2003185010 A JP2003185010 A JP 2003185010A JP 2003185010 A JP2003185010 A JP 2003185010A JP 2004121823 A JP2004121823 A JP 2004121823A
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JP
Japan
Prior art keywords
hole
toothbrush
holes
flocking
flocked
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP2003185010A
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Japanese (ja)
Inventor
Tadashi Kanamaru
金丸 直史
Toshiaki Kobayashi
小林 利彰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lion Corp
Original Assignee
Lion Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lion Corp filed Critical Lion Corp
Priority to JP2003185010A priority Critical patent/JP2004121823A/en
Priority to CN038183846A priority patent/CN1671315B/en
Priority to AU2003252722A priority patent/AU2003252722A1/en
Priority to KR1020057001558A priority patent/KR101087955B1/en
Priority to PCT/JP2003/009636 priority patent/WO2004010821A1/en
Publication of JP2004121823A publication Critical patent/JP2004121823A/en
Priority to HK06101956.4A priority patent/HK1081413A1/en
Withdrawn legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B3/00Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
    • A46B3/16Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier by wires or other anchoring means, specially for U-shaped bristle tufts
    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B9/00Arrangements of the bristles in the brush body
    • A46B9/02Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/04Arranged like in or for toothbrushes
    • AHUMAN NECESSITIES
    • A46BRUSHWARE
    • A46BBRUSHES
    • A46B2200/00Brushes characterized by their functions, uses or applications
    • A46B2200/10For human or animal care
    • A46B2200/1066Toothbrush for cleaning the teeth or dentures

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  • Brushes (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toothbrush which has an excellent plaque removing function at mouth disease liable sites, safety for mouth soft tissue, and appearance difference and usability by setting the hole rim interval between proximate bristle planting holes and the total cross section of bristles planted in the planting holes to an optimum value. <P>SOLUTION: This toothbrush is produced by planting bristle bundles 1 formed by bundling a plurality of bristles 2 and folding the bundles double with a flat piece 3 and then planting them into planting holes 4 in a bristling face 5 on a head part. Concerning at least part of planting holes, the hole interval L between arbitrary nearest bristling holes 4 is set at a value not larger than 1.0 mm and the total of bristle cross section areas per a hole is made not higher than 1.0 mm<SP>2</SP>in a condition that the bristles 2 planted into the planting holes 4 are folded double. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、歯間進入性、歯垢除去機能、外観差別性に優れるとともに、毛立ちも良好な平線植毛式の歯ブラシに関する。
【0002】
【従来の技術】
平線植毛式の歯ブラシは、平線と呼ばれる金属片またはプラスチック片を用いて毛束を2つ折りに植毛穴に打ち込むことにより植毛している。このため、ヘッド部植毛面に形成される植毛穴は、隣り合う植毛穴同士の穴縁間隔を1.0mm以上とし、さらに、植毛する毛束も、1穴当たり刷毛本数16〜60本(折り返し本数で32〜120本)、折り返された状態での1穴当たりの刷毛断面積の総和が1.0mm以上の太い毛束を用いるのが一般的であった。
【0003】
上記のように太い毛束を用いた場合、植毛穴数の少数化と毛腰の向上をもたらすため、生産効率の向上につながるという利点があった。一方、太い毛束を用いた場合、口腔疾患の好発部位である歯頸部、歯間部、咬合面の小窩裂溝部などに刷毛先が届きにくく、口腔疾患予防上の問題が残されており、口腔衛生上好ましくない。
【0004】
すなわち、このような歯ブラシの場合、太い毛束による強力な清掃効果を実現できる一方で、毛束が太いためにブラッシング圧を毛束同士で支え合ってしまい、毛束を構成する刷毛単体が本来持っているしなやかな動きを発揮することができず、口腔疾患好発部位とされる歯間部、歯間三角などの小さな隙間部分に毛先が届きにくくなる。また、毛束が太い場合、歯間進入性が悪いほか、毛腰が硬くなりがちで、口腔粘膜に対する刺激も大きい。さらに、強度との関係で隣り合う植毛穴同士の穴縁間隔を1.0mm以上とする必要があり、デザイン上の制約も多くなることから、新奇性に乏しく、外観差別性も低かった。このため、従来においてはヘッド部やハンドルの形状、色などを工夫することにより、製品間の差別化を図っていた。
【0005】
この種の歯ブラシとしては、例えば、特許文献1に、植毛台の幅を8mm以内とするとともに、ハンドル長手方向と平行に毛束を4列以上配置し、さらに外側に位置する毛束を内側に位置する毛束よりも柔らかくした歯ブラシが示されている。しかし、この歯ブラシは、主としてバス法による歯磨き時の口腔内の粘膜に対する安全性の観点から外側の刷毛を柔らかくしたものであり、本発明とはその技術思想を異にするもので、本発明の特徴である植毛穴の穴縁間隔と植毛される刷毛の断面積との関係については何らの検討もなされていない。
【0006】
また、特許文献2には、長円形状の植毛穴に矩形状断面のフィラメントを植毛した歯ブラシが示されているが、本発明の特徴である植毛穴の穴縁間隔と植毛される刷毛の断面積との関係については何らの検討もなされていない。
【0007】
植毛穴の穴縁間隔を狭めて薄壁化した歯ブラシについても、例えば特許文献3などに示されているが、この発明の場合、平線を打ち込む植毛穴の間隔は一定方向において確保されているだけであり、さらに、本発明の特徴である植毛穴の穴縁間隔と植毛される刷毛の断面積との関係については何らの検討もなされていない。
【0008】
また、特許文献4には、植毛穴たる長孔の向きを長軸の向きが異なるように選択して組み合わせることにより、硬さ方向の異なる毛束を混在配置させた歯ブラシが、さらに、特許文献5,6には、ブラシ基台から多数の毛を突出させ、多数の毛は少なくとも断面楕円形の毛を複数含むようにした歯ブラシがそれぞれ示されているが、いずれも本発明の特徴である植毛穴の穴縁間隔と刷毛の断面積の総和との関係については何らの検討もなされていない。
【0009】
【特許文献1】
特開2000−300346号公報
【特許文献2】
特開平11−318565号公報
【特許文献3】
特開平11−113634号公報
【特許文献4】
特開2002−10834号公報
【特許文献5】
特開平10−327930号公報
【特許文献6】
特開平10−327931号公報
【0010】
【発明が解決しようとする課題】
上述したように、従来の平線植毛式歯ブラシでは、植毛のしやすさから大きめの植毛穴を採用し、隣り合う植毛穴の間隔も広めに設定していた。このため、使用する毛束も太くなるとともに、植毛された毛束同士の間隔も広くなりがちであった。
【0011】
歯ブラシの必要条件としては、歯垢除去効果に優れるだけでなく、口腔内粘膜に対する安全性が高い点も求められるが、従来の平線植毛式歯ブラシの場合、毛束が太いため、歯面のステイン除去機能には優れるが、歯肉などの軟組織に対する刺激が強く、特に歯周炎や歯周病の患者に使用させるには細心の注意が必要であった。このため、歯周炎や歯周病の患者などには、毛腰の柔らかな刷毛を用いた歯ブラシを使用させるのが通例であるが、毛腰が柔らかいために十分な歯垢除去機能を発揮できないという問題があった。
【0012】
本発明は、上記問題を解決するためになされたもので、最近接する植毛穴との間の穴縁間隔と、植毛穴に植毛される刷毛の断面積の総和とを最適な値に設定することにより、口腔疾患好発部位における歯垢除去機能に優れるとともに、口腔内軟組織に対する刺激も柔らかで、しかも外観差別性、使用性にも優れた歯ブラシを提供することを課題とするものである。
【0013】
【課題を解決するための手段】
上記課題を解決するため、本発明は、複数本の刷毛を束ねた毛束をヘッド部植毛面の植毛穴に平線を用いて2つ折りに植毛した歯ブラシにおいて、少なくとも一部の植毛穴について、最近接する任意の植毛穴との間の穴縁間隔が1.0mm以下であり、かつ、該植毛穴に植毛された刷毛の折り返された状態での1穴当たりの刷毛断面積の総和が1.0mm以下、より好ましくは0.10〜0.70mmの範囲となるように設定したものである。
【0014】
従来の平線植毛式歯ブラシでは、直径1.5〜2.2mmの円形の植毛穴に1穴当たり16〜60本、折り返しで32〜120本程度の刷毛を植毛していた。しかしながら、このような太い毛束では刷毛同士がブラッシング圧を支え合ってしまい、歯間部や歯頸部、小窩裂溝部などの口腔疾患好発部へ毛先が進入しにくかった。
【0015】
そこで、本発明では、植毛穴に植毛された刷毛の折り返された状態での1穴当たりの刷毛断面積の総和は1.0mm以下、より好ましくは0.10〜0.70mmの範囲としたものである。刷毛の断面形状が円形の場合を例に採ると、折り返し状態での刷毛の断面積の総和が1.0mm以下となるのは、7mil(直径0.178mm)用毛では1穴当たりおよそ5〜14本、折り返しで10〜28本に相当する。
【0016】
この刷毛本数は、設計上の歯ブラシ仕様と刷毛径、断面形状などにより適宜設定できる。1つの植毛穴に植毛される刷毛の断面積の総和が1.0mmを超えると、毛束としての強度が大きくなるため、剛性の高い毛束となって毛束の柔軟性が極端に低下し、好ましくない。
【0017】
さらに、刷毛の断面積の総和が1.0mm以下の毛束を植毛した植毛穴と最近接する任意の植毛穴との穴縁間隔は1.0mm以下が好ましく、より好ましくは0.25〜0.70mmの範囲である。穴縁間隔が狭過ぎると、毛束の間隔も狭くなり、歯間に刷毛が入らず、歯間進入性が低下する。一方、穴縁間隔が広がると、外観差別性、使用感が低下する。植毛穴間隔が1.0mmを超えると、ブラッシング運動に伴う毛束の反発作用が強くなり、毛束のゴツゴツした感触が加わり、使用感が低下するばかりでなく、毛束の連続した運動が発揮されず、歯垢除去効果も低下する。
【0018】
本発明の歯ブラシは、細い毛束が最適な間隔で配置されるため、刷毛の1本1本が歯牙および歯肉に届きやすくなり、口腔疾患好発部位への毛先の到達性が改善される。また、少数の刷毛本数からなる毛束の植毛により、従来不可能であった細い毛束の連続した動きを発現させることができ、歯頸部、歯間乳頭部などの口腔粘膜に過大な負荷をかけることなく、歯垢除去、歯肉マッサージ機能を発現させることが可能となる。
【0019】
上記条件を満たす植毛穴は、ヘッド部植毛面の任意の位置に形成すればよいが、歯間進入性をより向上させるためには、ヘッド部植毛面の最外側に配置することが好ましい。この場合、刷掃実感やデザイン、生産性などの面から、ヘッド部植毛面の中央付近に太い毛束を配置するようにすれば、さらに好ましいものとなる。
【0020】
上記植毛穴の穴断面形状は通常用いられている円形や正方形でもよいが、楕円形または略楕円形、長円形または略長円形、長方形または略長方形など、穴断面に短軸方向(短径または短辺方向)と長軸方向(長径または長辺方向)を有する異形の穴形状とするのが好ましい。また、穴の向きを種々組み合わせて配置を設定することにより、目的とする毛の当たり心地、刷掃実感に応じた仕様の設計が可能である。また、ヘッド部植毛面の外側に位置して短軸が側縁に沿うように配列すると、同じ本数の刷毛を植毛した円形の毛束と比較して細く見え、外観差別性も向上させることができる。さらに、隣り合う植毛穴の平線同士の干渉を避けると同時により密毛化を図るため、植毛穴の配置を千鳥状としてもよい。
【0021】
植毛穴の長軸方向に沿って平線を打ち込めば、平線に沿って刷毛が並ぶため、植毛強度が向上する。また、平線の打ち込み方向によりヘッド部最外側の毛束が細く見えるため、外観差別性を向上させることができる。この際の植毛穴形状は、毛束と植毛穴の間隔を狭めるために略長方形が好ましい。また、短軸方向に沿って平線を打ち込む際には、毛束断面に対する外接円の直径と植毛穴の短軸方向を合致させることにより、植毛穴と毛束との空間をより少なくすることが可能となり、毛立ちの優れた植毛部を作成することができる。この際、使用する刷毛断面が円形の場合には、植毛穴形状を略楕円形、略長円形、略長方形とすればより好ましい。
【0022】
歯ブラシヘッド部は、形状、大きさ、デザインとも、何ら制限を受けない。また、歯ブラシで使用する平線の材質は、真鍮、ステンレスなどの金属のほか、硬質プラスチックや生分解性プラスチッなども使用可能である。また、平線の厚みを調節することによって、植毛穴と毛束とを確実に固定して空隙を少なくすることができる。使用する平線幅には特に制限はなく、任意に設定できる。
【0023】
歯ブラシのハンドル材料としては、ポリスチレン樹脂(PS)、ポリプロピレン樹脂(PP)、ポリエチレンテレフタレート樹脂(PET)、飽和ポリエステル樹脂(PCTA,PCTG)、アクリロニトリルブタジエンスチレン樹脂(ABS)、セルロースプロピオネート樹脂(CP)、ポリアリレート樹脂、ポリカーボネート樹脂(PC)、アクリロニトリルスチレン樹脂(AS)、ポリアセタール樹脂(POM)、ポリブチレンテレフタレート樹脂(PBT)などの素材を単独または混合して用いることができる。また、熱可塑性エラストマーと組み合わせた多色成形ハンドルとすることも好ましい。なお、ハンドル材料は上記のものに限定されるものではない。
【0024】
刷毛(フィラメント)材料としては、ポリエチレンテレフタレート,ポリブチレンテレフタレート,ポリトリメチレンテレフタレートなどのポリエステル、ナイロン6,ナイロン66,ナイロン6−10,ナイロン6−12,ナイロン12などのポリアミド、ポリエチレン,ポリプロピレンなどのポリオレフィン、ポリフッ化ビニリデンなどのポリハロゲン化ビニルなど、溶融紡糸可能な素材が利用されるが、使用感、耐久性などの点で、ナイロン、ポリトリメチレンテレフタレートが好ましい。また、これらの刷毛を二重芯鞘状に成形して外側と内側の材質の異なる刷毛としたり、表面状態の異なる刷毛としたり、目的に応じて使い分けることが可能である。
【0025】
刷毛の太さとしては、3〜10ミル(0.076〜0.254mm)、好ましくは5〜8ミル(0.127〜0.203mm)のものがよく、使用性、刷掃感、清掃効果、耐久性を考慮して、これらを組み合わせて利用することも好ましい。特に、多数の植毛穴を配置した歯ブラシ仕様では、外側の毛束から中央に向かうに従って、刷毛の硬さを硬くしたり、太さ、材質、長さ、色、断面形状を変化させれば、使用感、外観差別化の上からより好ましい。
【0026】
刷毛の種類としては、通常のラウンド用毛、テーパー用毛、ダイヤモンド用毛、フェザー用毛、異形断面用毛、グレイニー用毛、スパイラルキャッチ用毛、インジケータ用毛など、種々のものを利用することができる。なお、刷毛の種類もこれらに限定されるものではない。
【0027】
さらに、上記刷毛に関しては、自由端の毛切り(あるいはプロファイル)形状と刷毛長を適宜設定することにより、毛束先端面を単一平面状としたり、山切り状としたり、凹凸形状とすることができる。さらには、植毛面の外側と内側、先端部と後端部などで異なった毛束構成としてもよい。
【0028】
【発明の実施の形態】
以下、本発明の実施の形態について図面を参照して説明する。
図1に本発明に係る歯ブラシの一実施の形態を示す。図1(a)は平線を用いて植毛穴に2つ折りに植毛された毛束の模式斜視図、(b)はその断面図、(c)は隣り合う2つの植毛穴の略示平面図である。
【0029】
図において、1は複数本の刷毛2を束ねて構成された毛束であって、この毛束1を、平線3を用いて2つ折りにしてヘッド部植毛面5の植毛穴4に打ち込むことにより固定している。本発明においては、この毛束1の植毛に際して、最近接する植毛穴4,4との間の穴縁間隔Lを1.0mm以下とし、かつ、これら植毛穴4,4に植毛される刷毛2の折り返された状態での1穴当たりの刷毛断面積の総和を1.0mm以下となるように設定したものである。
【0030】
最近接する植毛穴4,4の穴縁間隔Lと、植毛される毛束1の刷毛2の断面積の総和とを上記のような値に設定すると、刷毛2の1本1本が歯牙および歯肉に届きやすくなり、口腔疾患好発部位への毛先の到達性が改善される。また、少数本の刷毛2からなる毛束1となるため、従来不可能であった細い毛束の連続した動きを発現させることが可能となり、歯頸部、歯間乳頭部などの口腔粘膜に過大な負荷をかけることなしに優れた歯垢除去、歯肉マッサージ機能を発揮することができる。
【0031】
なお、上記実施の形態では、植毛穴4の穴形状を長円形、刷毛2の断面形状を円形とし、平線3を長円形状をした植毛穴4の長手方向と直交する向きに打ち込んだ場合を示したが、植毛穴4の穴形状と刷毛2の断面形状、および平線3の打ち込み方向はこれに限定されるものではなく、例えば図2(a)〜(e)に示すように歯ブラシの仕様に応じて種々採用できるものである。
【0032】
図2(a)は、植毛穴4の穴形状を長円形、刷毛2の断面形状を円形とし、平線3を長円形状になる植毛穴4の長手方向に沿って打ち込んだ場合の例、図2(b)は、植毛穴4の穴形状を長方形、刷毛2の断面形状を円形とし、平線3を長方形状になる植毛穴4の長手方向に沿って打ち込んだ場合の例、図2(c)は、植毛穴4の穴形状を角部を丸めた長方形、刷毛2の断面形状を菱形(いわゆるダイヤモンド形)とし、平線3を角部を丸めた長方形状の植毛穴4の長手方向に沿って打ち込んだ場合の例、図2(d)は、植毛穴4の穴形状を円形、刷毛2の断面形状を円形とし、平線3を円形状になる植毛穴4の所定の方向(図示では上下方向)に打ち込んだ場合の例、図2(e)は、植毛穴4の穴形状を円形、刷毛2の断面形状を長方形とし、平線3を所定の向き(図示では上下方向)に打ち込むことにより、断面長方形状になる刷毛2を平線3と平行に並べた場合の例を示すものである。
【0033】
【実施例】
図3〜図26に本発明に係る歯ブラシの具体的な実施例を示す。また、図27〜図29に比較例としての従来仕様の歯ブラシを示す。これら実施例および比較例中、実施例1〜16(図3〜図18)と比較例1〜3(図27〜図29)については、表1にその植毛仕様を示した。また、実施例17〜24(図19〜図26)については、それぞれの図中にそれぞれの植毛仕様を記載した。なお、説明を分かり易くするため、植毛穴4,6のみを示し、植毛穴4,6に植毛された毛束については図示を省略した。また、各図において、黒く塗り潰された植毛穴6は従来仕様の植毛穴、塗り潰されていない白抜きの植毛穴4は本発明の条件を満たす植毛穴を示すものである。
【0034】
【表1】

Figure 2004121823
【0035】
上記実施例1〜24および比較例1〜3の各歯ブラシについて、疑似プラークを用いた清掃力試験および専門パネラーによる使用試験を行なった。その結果を表2に示す。この試験結果から明らかなように、本発明の歯ブラシは、従来仕様の歯ブラシに比べて歯頸部、小窩裂溝部における歯垢除去能力、歯間進入性に優れ、しかも従来仕様の歯ブラシに比べて心地良い使用感を得られることが確認された。
【0036】
【表2】
Figure 2004121823
【0037】
なお、表2中の歯垢除去効果、官能評価、総合評価の各判定は、それぞれ以下の基準によった。
(1)歯垢除去効果
◎:歯垢除去率80%以上
○:歯垢除去率50%以上、80%未満
△:歯垢除去率30%以上、50%未満
×:歯垢除去率30%未満
【0038】
歯垢除去率は、下式によって算出した。また、プラーク占有面積は画像解析により求めた。
歯垢除去率(%)={1−(刷掃後のプラーク占有面積/刷掃前のプラーク占有面積)}×100
【0039】
(2)官能評価
専門パネラー20名によってそれぞれ評価し、最も評価数の多い評価結果を当該官能評価についての判定結果とした。
◎:非常に良い
○:良い
△:どちらとも言えない
×:良くない
【0040】
(3)総合評価
◎:歯垢除去効果+官能評価の合計の◎が3つ以上
○:歯垢除去効果+官能評価の合計の◎が1〜2または○が3つ以上
△:歯垢除去効果+官能評価の合計の×が1〜2
×:歯垢除去効果+官能評価の合計の×が3つ以上
【0041】
【発明の効果】
以上説明したように、請求項1記載の発明によれば、少なくとも一部の植毛穴について、最近接する任意の植毛穴との間の穴縁間隔を1.0mm以下、かつ、該植毛穴に植毛された刷毛の折り返された状態での1穴当たりの刷毛断面積の総和を1.0mm以下としたので、口腔疾患好発部位における歯垢除去機能に優れるとともに、口腔軟組織に対する安全性が高く、しかも外観差別性、使用性にも優れた歯ブラシを得ることができる。
【0042】
また、請求項2記載の発明によれば、上記条件を満たす植毛穴を少なくともヘッド部植毛面の最外側の一部に配置したので、ブラッシング時、刷毛が歯面に接し易くなり、歯間進入性をより向上させることができる。
【0043】
また、請求項3記載の発明によれば、穴縁間隔1.0mm以下の植毛穴として、短軸方向に対する長軸方向の寸法割合が1.0よりも大きな穴形状の植毛穴を用いたので、植毛穴の向きを工夫することにより、側面からの毛束の見え方を変えることができ、植毛部の外観差別性を向上させることができる。さらに、植毛穴の短軸方向に沿って平線を打ち込むなど、平線の打ち込み方向を工夫すれば、植毛された毛束と植毛穴との間の隙間を可能な限り小さくすることができ、毛立ちの優れた植毛部を作成することができる。
【図面の簡単な説明】
【図1】本発明に係る歯ブラシの一実施の形態を示すもので、(a)は平線を用いて植毛穴に2つ折りに植毛された毛束の模式斜視図、(b)はその断面図、(c)は最近接する2つの植毛穴の略示平面図である。
【図2】(a)〜(e)は、植毛穴の形状と刷毛の植毛状態についての他の例を示す図である。
【図3】実施例1に係る歯ブラシを示すもので、(a)はヘッド部の略示拡大平面図、(b)は最近接する植毛穴部分の拡大平面図である。
【図4】実施例2に係る歯ブラシのヘッド部の略示拡大平面図である。
【図5】実施例3に係る歯ブラシのヘッド部の略示拡大平面図である。
【図6】実施例4に係る歯ブラシのヘッド部の略示拡大平面図である。
【図7】実施例5に係る歯ブラシのヘッド部の略示拡大平面図である。
【図8】実施例6に係る歯ブラシのヘッド部の略示拡大平面図である。
【図9】実施例7に係る歯ブラシのヘッド部の略示拡大平面図である。
【図10】実施例8に係る歯ブラシのヘッド部の略示拡大平面図である。
【図11】実施例9に係る歯ブラシのヘッド部の略示拡大平面図である。
【図12】実施例10に係る歯ブラシのヘッド部の略示拡大平面図である。
【図13】実施例11に係る歯ブラシのヘッド部の略示拡大平面図である。
【図14】実施例12に係る歯ブラシのヘッド部の略示拡大平面図である。
【図15】実施例13に係る歯ブラシのヘッド部の略示拡大平面図である。
【図16】実施例14に係る歯ブラシのヘッド部の略示拡大平面図である。
【図17】実施例15に係る歯ブラシのヘッド部の略示拡大平面図である。
【図18】実施例16に係る歯ブラシのヘッド部の略示拡大平面図である。
【図19】実施例17に係る歯ブラシのヘッド部の略示拡大平面図である。
【図20】実施例18に係る歯ブラシを示すもので、(a)は歯ブラシ全体の略示拡大平面図、(b)はヘッド部の略示拡大断面図である。
【図21】実施例19に係る歯ブラシのヘッド部の略示拡大平面図である。
【図22】実施例20に係る歯ブラシのヘッド部の略示拡大平面図である。
【図23】実施例21に係る歯ブラシのヘッド部の略示拡大平面図である。
【図24】実施例22に係る歯ブラシのヘッド部の略示拡大平面図である。
【図25】実施例23に係る歯ブラシのヘッド部の略示拡大平面図である。
【図26】実施例24に係る歯ブラシの略示拡大平面図である。
【図27】従来例(比較例1)に係る歯ブラシのヘッド部の略示拡大平面図である。
【図28】従来例(比較例2)に係る歯ブラシのヘッド部の略示拡大平面図である。
【図29】従来例(比較例3)に係る歯ブラシのヘッド部の略示拡大平面図である。
【符号の説明】
1  毛束
2  刷毛
3  平線
4  本発明条件を満たす植毛穴
5  ヘッド部植毛面
6  従来仕様の植毛穴
L  穴縁間隔[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a flat-line flocked toothbrush which is excellent in interdental penetration, plaque removing function, and appearance discrimination, and has good hairiness.
[0002]
[Prior art]
The flat-line flocking type toothbrush is implanted by using a metal piece or a plastic piece called a flat wire to fold the bristle bundle into two and drive it into the flocking hole. For this reason, the flocked holes formed on the head portion flocked surface have an interval of 1.0 mm or more between adjacent flocked holes, and the number of bristles to be flocked is 16 to 60 brushes per hole (returning). It is common to use a thick bristle bundle having a total brush cross-sectional area of 1.0 mm 2 or more per hole in the folded state (32 to 120 in number).
[0003]
When a thick hair bundle is used as described above, there is an advantage that the number of planted holes is reduced and the hair is improved, leading to an improvement in production efficiency. On the other hand, when a thick hair bundle is used, it is difficult for the brush tip to reach the cervical region, interdental region, pit and fissures on the occlusal surface, which are the most common sites for oral diseases, leaving problems in preventing oral diseases. It is not preferable for oral hygiene.
[0004]
In other words, in the case of such a toothbrush, while a strong cleaning effect can be realized by a thick bristle bundle, the brushing pressure is supported by the bristle bundles due to the thick bristle bundles, and the brush alone constituting the bristle bundle is originally intended. It cannot exert the supple movements it has, and it becomes difficult for the hair tips to reach small gaps such as the interdental and interdental triangles, which are considered to be sites where oral diseases are likely to occur. Further, when the hair bundle is thick, the interdental penetration is poor, and the hair tends to be stiff and the irritation to the oral mucosa is large. Further, it is necessary to set the hole spacing between adjacent flocking holes to 1.0 mm or more in relation to the strength, and there are many restrictions on design. Therefore, the novelty is poor and the appearance discrimination is low. For this reason, conventionally, differentiation between products has been achieved by devising the shapes, colors, and the like of the head portion and the handle.
[0005]
As this type of toothbrush, for example, in Patent Document 1, the width of the flocking table is set to 8 mm or less, and four or more rows of bristle bundles are arranged in parallel with the longitudinal direction of the handle. The toothbrush is shown softer than the tress. However, this toothbrush softens the outer brush mainly from the viewpoint of safety for the mucous membrane in the oral cavity when brushing teeth by the bath method, and differs from the present invention in its technical idea. No study has been made on the relationship between the hole edge spacing of the flocking holes and the cross-sectional area of the brush to be bristled.
[0006]
Patent Document 2 discloses a toothbrush in which a filament having a rectangular cross section is implanted in an elliptical implanted hole, and the gap between the hole edges of the implanted hole and the breakage of the implanted brush are features of the present invention. No consideration has been given to the relationship with the area.
[0007]
A toothbrush having a thinner wall by narrowing the interval between the flocked holes is also disclosed in, for example, Patent Document 3, but in the case of the present invention, the distance between the flocked holes for driving a flat line is secured in a certain direction. In addition, there is no study on the relationship between the hole edge spacing of the flocking holes and the cross-sectional area of the brush to be bristled, which is a feature of the present invention.
[0008]
Further, Patent Literature 4 discloses a toothbrush in which hair bundles having different hardness directions are mixed and arranged by selecting and combining the directions of the long holes as the flocking holes so that the directions of the long axes are different. 5 and 6 show toothbrushes in which a large number of bristles are projected from a brush base, and the plurality of bristles each include at least a plurality of bristles having an elliptical cross section, all of which are features of the present invention. No investigation has been made on the relationship between the hole edge spacing of the flocking holes and the sum of the cross-sectional areas of the brushes.
[0009]
[Patent Document 1]
JP 2000-300346 A [Patent Document 2]
JP-A-11-318565 [Patent Document 3]
JP-A-11-113634 [Patent Document 4]
Japanese Patent Application Laid-Open No. 2002-10834 [Patent Document 5]
JP-A-10-327930 [Patent Document 6]
JP-A-10-327931
[Problems to be solved by the invention]
As described above, the conventional flat-line flocking type toothbrush employs a relatively large flocking hole for ease of flocking, and the interval between adjacent flocking holes is set wide. For this reason, the hair bundle to be used becomes thicker, and the interval between the planted hair bundles tends to increase.
[0011]
The requirement for a toothbrush is that it not only has an excellent plaque removal effect, but also has high safety against the oral mucous membrane.However, in the case of a conventional flat-line flocked toothbrush, the bristles are thick, so Although it has an excellent stain removal function, it is strongly irritating to soft tissues such as the gingiva, and it requires particular care when used in patients with periodontitis or periodontal disease. For this reason, it is customary for patients with periodontitis or periodontal disease to use a toothbrush with a soft bristle brush, but because the bristle is soft, it exhibits a sufficient plaque removal function There was a problem that could not be done.
[0012]
The present invention has been made in order to solve the above-mentioned problem, and it is an object of the present invention to set an optimum value for a hole edge interval between a nearest flocking hole and a total sum of cross-sectional areas of brushes planted in the flocking hole. Accordingly, it is an object of the present invention to provide a toothbrush which is excellent in plaque removing function at a site where oral diseases occur frequently, has a soft stimulation to soft tissues in the oral cavity, and has excellent appearance discrimination and excellent usability.
[0013]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the present invention provides a toothbrush in which a hair bundle obtained by bundling a plurality of brushes is implanted into a hair implanted hole of a head implanted surface by using a flat line to fold the hair into two. The hole edge spacing between any of the nearest planted holes is 1.0 mm or less, and the sum of the brush cross-sectional areas per hole in the folded state of the brush planted in the planted holes is 1. 0 mm 2 or less, more preferably set to be in the range of 0.10~0.70mm 2.
[0014]
In a conventional flat-line flocking type toothbrush, 16 to 60 brushes per hole, and about 32 to 120 brushes are folded back into a circular flocking hole having a diameter of 1.5 to 2.2 mm. However, with such a thick hair bundle, the brushes support the brushing pressure with each other, and it is difficult for the bristles to penetrate into oral disease-prone parts such as the interdental part, the cervical part, and the pit and fissure.
[0015]
Therefore, in the present invention, the sum of the brush cross sectional area per hole in a state of being folded with bristles that are planted in planting pores is 1.0 mm 2 or less, and more preferably a range of 0.10~0.70Mm 2 It was done. Taking the case where the cross-sectional shape of the brush is circular as an example, the total of the cross-sectional area of the brush in the folded state is 1.0 mm 2 or less, when the brush for 7 mil (0.178 mm in diameter) bristles is about 5 per hole. 1414, equivalent to 10-28 in turn.
[0016]
The number of brushes can be appropriately set according to the design toothbrush specifications, the brush diameter, the cross-sectional shape, and the like. If the sum of the cross-sectional areas of the brushes implanted in one hair implantation hole exceeds 1.0 mm 2 , the strength of the hair bundle increases, and the hair bundle becomes highly rigid and the flexibility of the hair bundle extremely decreases. And is not preferred.
[0017]
Further, a hole edge interval between a flocking hole in which a total of the cross-sectional areas of the brushes is 1.0 mm 2 or less and a nearest flocking hole and a nearest flocking hole is preferably 1.0 mm or less, more preferably 0.25 to 0. .70 mm. If the hole edge interval is too narrow, the interval between the bristle bundles also becomes narrow, so that the brush does not enter between the teeth, and the interdental penetration is reduced. On the other hand, when the gap between the holes is widened, the discriminability of appearance and the feeling of use are reduced. If the spacing between the flocked holes exceeds 1.0 mm, the repulsive action of the hair bundle accompanying the brushing movement becomes stronger, and the rugged feel of the hair bundle is added, not only the feeling of use is reduced, but also the continuous movement of the hair bundle is exhibited. However, the plaque removing effect is also reduced.
[0018]
In the toothbrush of the present invention, since the fine bristle bundles are arranged at the optimal intervals, each of the brushes can easily reach the teeth and gingiva, and the reach of the bristle tip to the site where oral diseases are likely to occur is improved. . In addition, due to the implantation of a bristle bundle consisting of a small number of brushes, continuous movement of a thin bristle bundle, which was impossible in the past, can be expressed, and an excessive load is applied to the oral mucosa such as the cervical part and the interdental papilla. Plaque removal and gingival massage functions can be realized without applying dentition.
[0019]
The flocked hole that satisfies the above conditions may be formed at an arbitrary position on the head part flocked surface, but is preferably arranged on the outermost side of the head part flocked surface in order to further improve interdental penetration. In this case, it is more preferable to dispose a thick hair bundle near the center of the head flocked surface in terms of the feeling of brushing, design, and productivity.
[0020]
The hole cross-sectional shape of the flocking hole may be a commonly used circle or square, but may be an elliptical or substantially elliptical shape, an elliptical or substantially elliptical shape, a rectangular or substantially rectangular shape, or the like. It is preferable to have a modified hole shape having a short side direction) and a long axis direction (long axis or long side direction). Further, by setting the arrangement by variously combining the directions of the holes, it is possible to design the specifications according to the desired feeling of contact with the hair and the feeling of actual brushing. Also, if the short axis is located along the side edge and located outside the head part flocked surface, it will look thinner than a circular bristle bundle with the same number of brushes planted, and it can also improve the appearance discrimination it can. Further, the arrangement of the flocking holes may be staggered in order to avoid interference between the flat lines of the adjacent flocking holes and to achieve a more dense hair.
[0021]
If a flat line is driven along the long axis direction of the flocking hole, the brushes are arranged along the flat line, so that the flocking strength is improved. Further, the hair bundle on the outermost side of the head portion looks thin depending on the driving direction of the flat wire, so that the appearance discrimination can be improved. In this case, the shape of the flocking hole is preferably substantially rectangular in order to reduce the distance between the bristle bundle and the flocking hole. Also, when driving a flat line along the short axis direction, the diameter of the circumscribed circle with respect to the cross section of the hair bundle and the short axis direction of the hair implantation hole should be matched to reduce the space between the hair implantation hole and the hair bundle. This makes it possible to create a flocked portion with excellent hairiness. At this time, when the brush section to be used is circular, it is more preferable that the flocked hole shape is substantially elliptical, substantially elliptical, or substantially rectangular.
[0022]
The shape, size, and design of the toothbrush head are not limited at all. The material of the flat wire used in the toothbrush may be a metal such as brass or stainless steel, or a hard plastic or a biodegradable plastic. Further, by adjusting the thickness of the flat wire, it is possible to securely fix the flocking hole and the hair bundle and reduce the gap. The flat line width used is not particularly limited, and can be set arbitrarily.
[0023]
As the handle material of the toothbrush, polystyrene resin (PS), polypropylene resin (PP), polyethylene terephthalate resin (PET), saturated polyester resin (PCTA, PCTG), acrylonitrile butadiene styrene resin (ABS), cellulose propionate resin (CP) ), Polyarylate resin, polycarbonate resin (PC), acrylonitrile styrene resin (AS), polyacetal resin (POM), polybutylene terephthalate resin (PBT) and the like can be used alone or in combination. It is also preferable to use a multicolor molded handle in combination with a thermoplastic elastomer. The handle material is not limited to the above.
[0024]
Examples of the brush (filament) material include polyesters such as polyethylene terephthalate, polybutylene terephthalate, and polytrimethylene terephthalate, polyamides such as nylon 6, nylon 66, nylon 6-10, nylon 6-12, and nylon 12, polyethylene, polypropylene, and the like. A melt-spinnable material such as polyolefin and polyvinyl halide such as polyvinylidene fluoride is used, but nylon and polytrimethylene terephthalate are preferred from the viewpoints of usability and durability. Further, these brushes can be formed into a double core-sheath shape to make brushes having different materials on the outside and inside, or brushes having different surface conditions, and can be used properly according to the purpose.
[0025]
The thickness of the brush is preferably 3 to 10 mils (0.076 to 0.254 mm), and preferably 5 to 8 mils (0.127 to 0.203 mm). It is also preferable to use them in combination in consideration of durability. In particular, in the toothbrush specification with a large number of flocked holes, if the hardness of the brush is increased or the thickness, material, length, color, cross-sectional shape is changed from the outer bristle bundle toward the center, It is more preferable in terms of feeling of use and appearance differentiation.
[0026]
Use various types of brushes, such as normal round bristles, taper bristles, diamond bristles, feather bristles, irregular cross-section bristles, grainy bristles, spiral catch bristles, and indicator bristles. Can be. The type of the brush is not limited to these.
[0027]
Further, regarding the above-mentioned brush, by appropriately setting the bristle cutting (or profile) shape at the free end and the bristle length, the leading end face of the bristle bundle can be formed into a single plane, a mountain cut, or an uneven shape. Can be. Furthermore, different hair bundle configurations may be used at the outer and inner sides of the flocked surface, at the front end and the rear end, and the like.
[0028]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an embodiment of a toothbrush according to the present invention. FIG. 1A is a schematic perspective view of a hair bundle that is implanted into a hair implantation hole in two folds using a flat line, FIG. 1B is a cross-sectional view thereof, and FIG. 1C is a schematic plan view of two adjacent hair implantation holes. It is.
[0029]
In the figure, reference numeral 1 denotes a bristle bundle formed by bundling a plurality of brushes 2. The bristle bundle 1 is folded in two using a flat wire 3 and is driven into a flocking hole 4 of a head portion flocking surface 5. It is fixed by. In the present invention, at the time of the flocking of the bristle bundle 1, the hole edge interval L between the nearest flocking holes 4 and 4 is set to 1.0 mm or less, and the brush 2 to be transplanted into the bristle holes 4 and 4 is removed. The sum of the cross-sectional areas of the brushes per hole in the folded state is set to be 1.0 mm 2 or less.
[0030]
If the hole spacing L between the closest flocking holes 4 and 4 and the sum total of the cross-sectional areas of the brushes 2 of the bristle bundle 1 to be planted are set to the above values, each of the brushes 2 becomes a tooth and a gum. And the accessibility of the hair tips to the oral disease-prone site is improved. In addition, since the hair bundle 1 is made up of a small number of brushes 2, it is possible to express a continuous movement of a thin hair bundle, which was impossible in the past. Excellent plaque removal and gingival massage functions can be exerted without applying an excessive load.
[0031]
In the above-described embodiment, a case where the hole shape of the flocking hole 4 is oval, the cross-sectional shape of the brush 2 is circular, and the flat wire 3 is driven in a direction orthogonal to the longitudinal direction of the oval-shaped flocking hole 4. However, the hole shape of the flocked hole 4, the cross-sectional shape of the brush 2, and the driving direction of the flat wire 3 are not limited to these. For example, as shown in FIGS. Can be adopted in various ways according to the specifications.
[0032]
FIG. 2A shows an example in which the hole shape of the flocking hole 4 is oval, the cross-sectional shape of the brush 2 is circular, and the flat wire 3 is driven along the longitudinal direction of the flocking hole 4 having an oval shape. FIG. 2B shows an example in which the hole shape of the flocking hole 4 is rectangular, the cross-sectional shape of the brush 2 is circular, and the flat wire 3 is driven along the longitudinal direction of the rectangular flocking hole 4. (C) shows the shape of the flocking hole 4 having a rectangular shape with rounded corners, the brush 2 having a rhombic (so-called diamond-shaped) cross-sectional shape, and the flat wire 3 having a rounded rectangular shape with rounded corners. FIG. 2 (d) shows an example of a case where the hair is driven along the direction, and FIG. 2 (d) shows a predetermined direction of the flocking hole 4 in which the hole shape of the flocking hole 4 is circular, the cross-sectional shape of the brush 2 is circular, and the flat line 3 is circular. FIG. 2 (e) shows an example in which the brush is driven in a vertical direction (in the drawing, the vertical direction). (In the vertical direction in the drawing) the Tairasen 3 predetermined direction by implanting a shows the example in which arranged brush 2 to be a rectangular cross section parallel to the Tairasen 3.
[0033]
【Example】
3 to 26 show specific examples of the toothbrush according to the present invention. FIGS. 27 to 29 show toothbrushes of conventional specifications as comparative examples. Among these Examples and Comparative Examples, Table 1 shows the flocking specifications of Examples 1 to 16 (FIGS. 3 to 18) and Comparative Examples 1 to 3 (FIGS. 27 to 29). Further, for Examples 17 to 24 (FIGS. 19 to 26), the respective flocking specifications are described in the respective drawings. In order to make the description easy to understand, only the planted holes 4 and 6 are shown, and the hair bundles planted in the planted holes 4 and 6 are not shown. In each of the drawings, a black flocking hole 6 indicates a conventional flocking hole, and an unfilled white flocking hole 4 indicates a flocking hole satisfying the conditions of the present invention.
[0034]
[Table 1]
Figure 2004121823
[0035]
For each of the toothbrushes of Examples 1 to 24 and Comparative Examples 1 to 3, a cleaning force test using a pseudo plaque and a use test by a specialized panel were performed. Table 2 shows the results. As is clear from the test results, the toothbrush of the present invention is superior to the conventional toothbrush in the plaque removing ability at the cervical region and the pit and fissure and the interdental invasion, and moreover, compared to the conventional toothbrush. It was confirmed that a comfortable feeling of use could be obtained.
[0036]
[Table 2]
Figure 2004121823
[0037]
In addition, each determination of the plaque removal effect, the sensory evaluation, and the comprehensive evaluation in Table 2 was based on the following criteria, respectively.
(1) Plaque removal effect :: plaque removal rate 80% or more :: plaque removal rate 50% or more, less than 80% Δ: plaque removal rate 30% or more, less than 50% ×: plaque removal rate 30% Less than
The plaque removal rate was calculated by the following equation. The plaque occupation area was determined by image analysis.
Plaque removal rate (%) = {1− (plaque occupation area after brushing / plaque occupation area before brushing)} × 100
[0039]
(2) Evaluation was performed by 20 panelists specializing in sensory evaluation, and the evaluation result with the largest number of evaluations was determined as the judgment result for the sensory evaluation.
◎: Very good ○: Good △: Neither can be said ×: Not good
(3) Comprehensive evaluation :: plaque removal effect + total of sensory evaluation ◎ is 3 or more :: plaque removal effect + total sensory evaluation ◎ is 1 to 2 or ○ is 3 or more △: plaque removal × of the sum of effect and sensory evaluation is 1 to 2
×: The total of × of plaque removing effect + sensory evaluation is 3 or more.
【The invention's effect】
As described above, according to the first aspect of the present invention, at least a part of the flocked holes has a hole edge interval of 1.0 mm or less between any of the closest flocked holes and a flocked flocked hole. The sum of the cross-sectional areas of the brushes per hole in the folded state of the brush is 1.0 mm 2 or less, so that it is excellent in the plaque removing function at a site where oral diseases are likely to occur, and has high safety against oral soft tissues. In addition, a toothbrush excellent in appearance discrimination and usability can be obtained.
[0042]
According to the second aspect of the present invention, the flocked holes satisfying the above conditions are arranged at least on a part of the outermost surface of the head portion flocked surface. Properties can be further improved.
[0043]
According to the third aspect of the present invention, as the flocked holes having a hole edge interval of 1.0 mm or less, a flocked hole having a hole shape having a dimension ratio in the long axis direction to the short axis direction larger than 1.0 is used. By devising the direction of the flocking hole, the appearance of the bristle bundle from the side can be changed, and the appearance discrimination of the flocking portion can be improved. Furthermore, by devising the driving direction of the flat line, such as driving a flat line along the short axis direction of the flocking hole, it is possible to make the gap between the flocks and the flocking hole as small as possible, A flocked part with excellent hairiness can be created.
[Brief description of the drawings]
1A and 1B show an embodiment of a toothbrush according to the present invention, wherein FIG. 1A is a schematic perspective view of a hair bundle that is implanted in a hair implantation hole in two using a flat wire, and FIG. FIG. 1C is a schematic plan view of two nearest flocking holes.
FIGS. 2A to 2E are diagrams illustrating another example of the shape of a flocked hole and the state of flocked brush.
FIGS. 3A and 3B show the toothbrush according to the first embodiment, wherein FIG. 3A is a schematic enlarged plan view of a head portion, and FIG.
FIG. 4 is a schematic enlarged plan view of a head portion of the toothbrush according to the second embodiment.
FIG. 5 is a schematic enlarged plan view of a head portion of a toothbrush according to a third embodiment.
FIG. 6 is a schematic enlarged plan view of a head portion of a toothbrush according to a fourth embodiment.
FIG. 7 is a schematic enlarged plan view of a head portion of a toothbrush according to a fifth embodiment.
FIG. 8 is a schematic enlarged plan view of a head portion of a toothbrush according to a sixth embodiment.
FIG. 9 is a schematic enlarged plan view of a head portion of a toothbrush according to a seventh embodiment.
FIG. 10 is a schematic enlarged plan view of a head portion of a toothbrush according to an eighth embodiment.
FIG. 11 is a schematic enlarged plan view of a head portion of a toothbrush according to a ninth embodiment.
FIG. 12 is a schematic enlarged plan view of a head portion of a toothbrush according to a tenth embodiment.
FIG. 13 is a schematic enlarged plan view of a head portion of the toothbrush according to the eleventh embodiment.
FIG. 14 is a schematic enlarged plan view of a head portion of a toothbrush according to a twelfth embodiment.
FIG. 15 is a schematic enlarged plan view of a head portion of a toothbrush according to a thirteenth embodiment.
FIG. 16 is a schematic enlarged plan view of a head portion of the toothbrush according to the fourteenth embodiment.
FIG. 17 is a schematic enlarged plan view of a head portion of the toothbrush according to the fifteenth embodiment.
FIG. 18 is a schematic enlarged plan view of a head portion of the toothbrush according to the sixteenth embodiment.
FIG. 19 is a schematic enlarged plan view of a head portion of the toothbrush according to the seventeenth embodiment.
FIGS. 20A and 20B show a toothbrush according to an eighteenth embodiment, in which FIG. 20A is a schematic enlarged plan view of the entire toothbrush, and FIG.
FIG. 21 is a schematic enlarged plan view of a head portion of the toothbrush according to the nineteenth embodiment.
FIG. 22 is a schematic enlarged plan view of a head portion of a toothbrush according to a twentieth embodiment.
FIG. 23 is a schematic enlarged plan view of a head portion of the toothbrush according to the twenty-first embodiment.
FIG. 24 is a schematic enlarged plan view of a head portion of a toothbrush according to a twenty-second embodiment.
FIG. 25 is a schematic enlarged plan view of a head portion of a toothbrush according to Embodiment 23.
FIG. 26 is a schematic enlarged plan view of a toothbrush according to Embodiment 24.
FIG. 27 is a schematic enlarged plan view of a head portion of a toothbrush according to a conventional example (Comparative Example 1).
FIG. 28 is a schematic enlarged plan view of a head portion of a toothbrush according to a conventional example (Comparative Example 2).
FIG. 29 is a schematic enlarged plan view of a head portion of a toothbrush according to a conventional example (Comparative Example 3).
[Explanation of symbols]
REFERENCE SIGNS LIST 1 hair bundle 2 brush 3 flat wire 4 flocking hole 5 satisfying the conditions of the present invention 5 head flocking surface 6 flocking hole L of conventional specification

Claims (3)

複数本の刷毛を束ねた毛束をヘッド部植毛面の植毛穴に平線を用いて2つ折りに植毛した歯ブラシにおいて、少なくとも一部の植毛穴について、最近接する任意の植毛穴との間の穴縁間隔が1.0mm以下であり、かつ、該植毛穴に植毛された刷毛の折り返された状態での1穴当たりの刷毛断面積の総和が1.0mm以下であることを特徴とする歯ブラシ。In a toothbrush in which a bundle of a plurality of brushes is folded and implanted into a hair implanted hole on a head implanted surface using a flat line, a hole between at least a part of the implanted hair and any nearest implanted hair implanted hole is used. toothbrush edge distance is at 1.0mm or less, and wherein the sum of the brush cross sectional area per hole in a state of being folded with bristles that are planted in the plant pores is 1.0mm 2 or less . 前記穴縁間隔1.0mm以下の植毛穴が、少なくともヘッド部植毛面の最外側の一部に配置されていることを特徴とする請求項1記載の歯ブラシ。2. The toothbrush according to claim 1, wherein the flocked holes having a hole edge interval of 1.0 mm or less are arranged at least on an outermost part of the head portion flocked surface. 3. 前記穴縁間隔1.0mm以下の植毛穴として、短軸方向に対する長軸方向の寸法割合が1.0よりも大きな穴形状の植毛穴を用いたことを特徴とする請求項1または2記載の歯ブラシ。The flocked hole having a hole shape having a dimension ratio in the long axis direction to the short axis direction larger than 1.0 is used as the flocked hole having a hole edge interval of 1.0 mm or less. toothbrush.
JP2003185010A 2002-07-31 2003-06-27 Toothbrush Withdrawn JP2004121823A (en)

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JP2003185010A JP2004121823A (en) 2002-07-31 2003-06-27 Toothbrush
CN038183846A CN1671315B (en) 2002-07-31 2003-07-30 Toothbrush
AU2003252722A AU2003252722A1 (en) 2002-07-31 2003-07-30 Toothbrush
KR1020057001558A KR101087955B1 (en) 2002-07-31 2003-07-30 Toothbrush
PCT/JP2003/009636 WO2004010821A1 (en) 2002-07-31 2003-07-30 Toothbrush
HK06101956.4A HK1081413A1 (en) 2002-07-31 2006-02-15 Toothbrush

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JP2006174905A (en) * 2004-12-21 2006-07-06 Lion Corp Toothbrush
JP2006180973A (en) * 2004-12-27 2006-07-13 Lion Corp Toothbrush
JP2006223426A (en) * 2005-02-16 2006-08-31 Lion Corp Toothbrush
JP2013085654A (en) * 2011-10-17 2013-05-13 Takeshi Suzuki Toothbrush
US9119462B2 (en) 2011-07-23 2015-09-01 Braun Gmbh Oral cleaning implement having a plastic staple comprising a cavity
JP2016077317A (en) * 2014-10-09 2016-05-16 サンスター株式会社 Single-tuft brush
JP2021007554A (en) * 2019-06-28 2021-01-28 サンスター株式会社 toothbrush

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CN101568276B (en) * 2006-12-28 2011-11-09 狮王株式会社 Toothbrush
US8459892B2 (en) 2008-06-25 2013-06-11 Colgate-Palmolive Company Oral care implement
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US8402591B2 (en) 2009-07-01 2013-03-26 Colgate-Palmolive Company Toothbrush having improved tuft retention and anchor wire
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CN103298369B (en) * 2011-01-12 2016-06-01 高露洁-棕榄公司 Oral care implement
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JP2006174905A (en) * 2004-12-21 2006-07-06 Lion Corp Toothbrush
JP2006180973A (en) * 2004-12-27 2006-07-13 Lion Corp Toothbrush
JP4541874B2 (en) * 2004-12-27 2010-09-08 ライオン株式会社 toothbrush
JP2006223426A (en) * 2005-02-16 2006-08-31 Lion Corp Toothbrush
JP4689295B2 (en) * 2005-02-16 2011-05-25 ライオン株式会社 toothbrush
US9119462B2 (en) 2011-07-23 2015-09-01 Braun Gmbh Oral cleaning implement having a plastic staple comprising a cavity
JP2013085654A (en) * 2011-10-17 2013-05-13 Takeshi Suzuki Toothbrush
JP2016077317A (en) * 2014-10-09 2016-05-16 サンスター株式会社 Single-tuft brush
JP2021007554A (en) * 2019-06-28 2021-01-28 サンスター株式会社 toothbrush

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HK1081413A1 (en) 2006-05-19
CN1671315A (en) 2005-09-21
AU2003252722A1 (en) 2004-02-16

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