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JP3704749B2 - Interdental brush - Google Patents

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JP3704749B2
JP3704749B2 JP17384795A JP17384795A JP3704749B2 JP 3704749 B2 JP3704749 B2 JP 3704749B2 JP 17384795 A JP17384795 A JP 17384795A JP 17384795 A JP17384795 A JP 17384795A JP 3704749 B2 JP3704749 B2 JP 3704749B2
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filament
filaments
brush
interdental brush
hair
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JPH0923928A (en
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直希 鶴川
仁 松本
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Sunstar Inc
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Sunstar Inc
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Description

【0001】
【産業上の利用分野】
本発明は変化に富み、歯間ブラシとして要求される各種機能を1本のブラシで実現でき、複数機能を選択的にあるいは同時に発揮させたり、あるいは新たな使用態様を提案できる歯間ブラシに関する。
【0002】
【従来の技術】
歯間ブラシは図7に示すようにブラシ20とこのブラシ20を支持するハンドル30とより主として構成されている。ブラシは図8に示すようにワイヤ21を途中で折り返し、次いで折り返したワイヤ間に毛束22を挟み込んだうえこのワイヤ21を捻じり、最後に毛切りによる整形を施して作製している。ワイヤ間に挟み込む毛束22は図9に示すように所定長さのフィラメント22aを数十万本束ねた原束23に、所定間隔で溝24aを形成したピッカー24を押し当て、溝24aにフィラメント22aを一定本数ずつ引っ掛けることにより取り出している。
ピッカーによって取り出される一束の毛束に含まれるフィラメントの本数はピッカーに形成された溝の大きさによってほぼ決まるものの、その本数を完全に一定にすることはできず、このため完成した歯間ブラシの植毛本数に差がでるとともに植毛状態に粗密が発生することがあった。
【0003】
このような問題点を解決する方法としてピッカーを用いる代わりに、連続した毛束を巻装した巻装体を用いる技術が最近提案されている。この技術は図10に示すように数百本のフィラメント25aを一束に束ねた連続する毛束25をリール26に巻いて構成した巻装体27を複数個(図例のものでは3個)並設し、これら複数の巻装体27から同時に繰り出した毛束群をワイヤ21間に供給したうえ毛束25をワイヤ間に均等に分散させ、その後、ワイヤ21を捻じるという技術である。この技術によれば巻装体27から繰り出される毛束25に含まれるフィラメント本数は常に一定であるから、1本の歯間ブラシに植設されるフィラメント本数を一定にでき、植毛状態に粗密のない高品質な歯間ブラシの提供が可能となった。
【0004】
【発明が解決しようとする課題】
前記技術によって高品質な歯間ブラシの提供が可能となったのであるが、前記技術は歯垢除去を目的とした単機能の歯間ブラシの製造しか想定していない。
しかしながら、近年にいたって歯間ブラシに求められる機能は多様化且つ複合化しつつあり、例えば歯垢除去効果と同時に歯肉マッサージ効果が得られるものが求められている。一般に歯垢除去には硬いフィラメントが適し、他方、歯肉マッサージには柔らかいフィラメントが適するが、従来の歯間ブラシはフィラメントが植毛部全体において一様であるため、歯垢除去効果と歯肉マッサージ効果の両方を1本の歯間ブラシで実現することはできない。
歯間ブラシにはこのように複数機能が求められだしている。そして求められる複数機能の内容は前述したような清掃効果やマッサージ効果だけに止まらず、使い勝手の改善に役立つ新機能等やデザイン等にもおよんでいる。
本発明はこのような現況に鑑みなされたものであり、変化に富み、歯間ブラシとして要求される複数機能を1本の歯間ブラシで実現したり、あるいは付加された新機能によって新たな使用態様が提案できる歯間ブラシを提供せんとするものである。
【0005】
【課題を解決するための手段】
すなわち本発明は、折り返したワイヤ間に複数本のフィラメントよりなる毛束を挟み込んだ状態でこのワイヤを捻じることにより、ワイヤ軸に沿ってフィラメントを植毛したブラシを備える歯間ブラシであって、前記フィラメントの植毛部を、ワイヤ軸方向において二つ以上の領域に区分し、となりあう領域に互いに材質の異なるフィラメントを植毛し、前記植毛部の2つ以上の領域のうち、前側の領域に植毛されるフィラメント後側の領域に植毛されるフィラメントよりも柔毛のものを用いてなる歯間ブラシを提供する。
【0006】
ここで、前記植毛部をワイヤの軸方向において前後2つの領域に区分し、前側の領域に柔毛のフィラメントを配し、且つ後側の領域に硬毛のフィラメントを配してなるものが好ましい。
【0007】
このようにフィラメントの硬さが互いに異なる場合、硬いフィラメントは剛性にも優れ加圧力の伝達性も高いことから歯垢除去に適する。他方、柔らかいフィラメントは加圧力を緩衝させて伝達することから歯肉マッサージに適することとなり、前側に柔らかいフィラメントを植毛した場合は、変形が容易であるため歯間への挿入が容易になるとともに、前側のフィラメントにより歯肉を傷つけることなくマッサージすることできる。また、後側に硬いフィラメントを植毛することにより、植毛後側部による歯垢除去効果も発揮されるのである。そして、植毛部の特定部位を集中使用せず全体をまんべんなく使用した場合、歯間ブラシの押し引き動作に伴って歯肉マッサージと歯垢除去とが交互に行われることになる。
【0008】
より具体的には、前記柔毛のフィラメントがポリアミド(ナイロン)からなり、前記硬毛のフィラメントがポリブチレンテレフタレートからなるものが好ましい。ポリアミドは吸水性が高いため使用過程で柔らかくなりやすく、他方、PBTは吸水性が低いため硬い性質を維持しやすい。
【0013】
【実施例】
以下、本発明の実施例を説明する。
図1は本発明の対象となる歯間ブラシの一例である。歯間ブラシは図1(a)に示すようにブラシ1を短軸状のハンドル10に埋設固定した使い捨てタイプのものや、図1(b)に示すようにブラシ1を短軸基台11に埋設固定したものを長軸ホルダー12に脱着自在に装着するタイプ、あるいは図示しないが長軸ホルダー12の先端部を屈曲させたもの、更にブラシとハンドルが別々に構成され、ハンドルにブラシを装着することにより使用するもの等があり、これら全てが本願発明の対象となる。
【0014】
本発明の歯間ブラシは、植毛部を2つ以上の部分から構成し、となりあう部分に互いに物理的性質の異なるフィラメントを植毛することを特徴としている。例えば図2に示すように植毛部2をワイヤ3の軸方向において前後2つの領域に区分し、前側のA領域と後側のB領域に植毛するフィラメントの物理的性質を変えること、あるいは図3に示すように植毛部2を先端部、中間部及び後端部の3つに区分し、先端部であるA領域、中間部であるB領域、後端部であるC領域にそれぞれ植毛するフィラメントの物理的性質を互いに変えることが考えられる。A領域とC領域に植毛するフィラメントの物理的性質は同じにする場合もある。尚、必要に応じて植毛部を4つ以上に区分する場合も考えられる。
【0015】
植毛部2の作製にあたっては図10として説明した技術、即ち、並設する各巻装体から毛束を繰り出す技術を利用し、繰り出される毛束を構成するフィラメントに互いに物理的性質の異なるものを使用する。植毛部2の軸材となるワイヤ3としてはSUS304、SUS316等のステンレス線や特公昭35−9159号において提案されたコバルト基合金等を用いることができる。コバルト基合金としては例えば、Co:30〜50%、Cr:20〜30%、Ni:10〜25%、Fe:10〜20%、Mo:0.1〜10%の化学成分組成を基礎としたコバルト主体のバネ用合金が挙げられる。この金属を用いると歯間への優れた挿通性を発揮できる細線ワイヤーを用いながらも、使用途上でのワイヤーの座屈や破断のない耐久性を実現でき、しかもブラシに腰があって操作性にも優れた歯間ブラシを提供することができる。
【0016】
物理的性質が相違するフィラメントとは、材質、硬さ、太さ、色のうち一つ以上が相違しているものを指している。またこれらと相互に関連する弾力性、剛性が相違するものも含んでいる。
【0017】
フィラメントに使用される材質としては、ポリアミド(ナイロン)、ポリプロピレン、ポリエチレン、ポリエチレンテレフタレート(PET)、ポリブチレンテレフタレート(PBT)等があり、これらから互いに異なる素材を選択する。ポリアミド(ナイロン)は吸水性が高いため使用過程で柔らかくなりやすく、他方、PBTは吸水性が低いため硬い性質を維持しやすい。材質の相違は後述するフィラメントの硬さを直接あるいは間接的に規定する要因となる。
【0018】
フィラメントの硬さは材質によって規定されると同時にフィラメントの太さによっても変わる。また硬さは弾力性、剛性とも関連している。一般に硬いフィラメントは剛性にも優れ加圧力の伝達性も高いことから歯垢除去に適する。他方、柔らかいフィラメントは加圧力を緩衝させて伝達することから歯肉マッサージに適する。また柔らかいフィラメントは変形が容易であるため歯間への挿入を案内する植毛部先端に用いる。
【0019】
フィラメントの太さはフィラメントの硬さや変形容易性にも関係している。通常、歯間ブラシとしては2ミル(但し、1ミル=1/1000インチ)〜4ミルのフィラメントを用いる。2ミル未満の細線はピッカーでは保持できない理由から従来の歯間ブラシでは通常使用されない。本実施例では図10で示したようにフィラメントを数百本単位で束ねた毛束をワイヤに供給する製造方法を採用することにより、1ミル等の2ミル未満の細毛の植設を可能にしている。1ミルの細毛を植設すれば、フィラメントの歯間細部への到達性は飛躍的に高まる。
【0020】
植毛部の区分された領域相互間で色を違える場合、同じフィラメントの色のみを変更する場合と、機能差があるフィラメントを更に色分けする場合とがある。後者は機能差があることを視覚的に認識できるようにする意味がある。また色分けは、ブラシの歯間への挿入深さを知る指標として活用することもできる。あるいは植毛部先端側を歯垢や血液が目立ちやすい色にしておくことにより歯垢除去状況や歯肉炎の有無を知る手段として活用することもできる。例えば図2において前側部のA領域を白とすれば、歯肉炎に起因して出血があった場合には前側部分は赤く汚染するので歯肉炎の存在を即座に知ることができる。また歯垢の除去状況を知りたい場合はA領域は黒とすることが好ましい。歯垢は黄味がかった白であるから黒に対して良く目立つ。
【0021】
このように本発明は植毛部に材質、硬さ、太さ又は色の異なるフィラメントを領域区分して植毛するものであるが、前記各要素以外の要素、例えば表面状態等を違えることもできる。
【0022】
本発明のより具体的な態様としては、図2における前側のA領域に柔らかいフィラメントを配し、他方、後側のB領域にはこれよりも硬いフィラメントを配することが挙げられる。このような組み合わせの歯間ブラシは硬毛部分を集中使用することにより優れた歯垢除去効果が発揮でき、他方、柔毛部分を集中使用することにより優れた歯肉マッサージ効果が発揮できる。また前側部が柔毛であることから歯間挿入性も優れている。更に、植毛部の特定部位を集中使用せず全体をまんべんなく使用した場合は歯間ブラシの押し引き動作に伴って歯肉マッサージと歯垢除去とが交互に行われることになる。柔毛及び硬毛の違いはフィラメントの材質差によって実現しても良いし、フィラメント太さの差によって実現してもよい。
【0023】
植毛部の毛切り形状としては前述したような図4(a)〜(d)に示すような円錐型、円柱型、樽型、鼓型等が適宜採用できる。歯間挿入性の観点からは先細となっている円錐型及び樽型が有利である。
【0024】
本発明者は本願発明の効果を確認するために20名のパネラーを対象として使用感に関する比較試験1、2を行った。いずれの比較試験においても図5に示すような直径3mm、長さ10mmの円柱型の毛切り形状を有する歯間ブラシを用いた。
<比較試験1>
図5(c)に示すように植毛部2をワイヤ軸方向において前後2つに区分し、前側に柔毛を配し、後側に硬毛を配して本発明実施例1とした。また、植毛部全体が前記柔毛によって構成された比較例1(図5(a))と、植毛部全体が前記硬毛によって構成された比較例2(図5(b))とを構成し、本発明実施例1、比較例1、比較例2のそれぞれについて、「歯面が磨けた感触」、「歯肉への感触」、「挿入のしやすさ」について評価してもらい、これらについて「良い」との感触を示した人の人数を集計した。また前記3種類の歯間ブラシのうちその歯間ブラシが「最も良い」との評価を下した人の人数を集計して「総合評価」とした。
本発明実施例1の使用に際しては歯面刷掃には硬毛部分を、歯肉マッサージには柔毛部分を集中使用するように指導した。尚、硬毛としてはポリアミド(ナイロン)製の3ミルのフィラメントを用い、柔毛としてはポリアミド(ナイロン)製の2ミルのフィラメントを用いた。結果を表1に示す。
【0025】
【表1】

Figure 0003704749
【0026】
表1より明らかなように、本発明実施例1の歯間ブラシは柔毛を前側部に配し、硬毛を後側部に配した結果、比較例1及び比較例2の好ましい特性のみを選択的に融合できていることがわかる。尚、全体を柔毛から構成した比較例1の歯間ブラシは柔らかすぎて磨けた気がせず、また全体を硬毛から構成した比較例2の歯間ブラシでは硬すぎて痛みを伴うことも明らかとなった。
【0027】
<比較試験2>
前記と同様に植毛部2を前後に二分し、前側にナイロンフィラメントを配し、後側にPBTフィラメントを配して本発明実施例2とした。また、植毛部全体がナイロンフィラメントによって構成された比較例3と、植毛部全体が前記PBTフィラメントによって構成された比較例4の歯間ブラシとを構成し、本発明実施例1、比較例1、比較例2のそれぞれについて比較試験1と同じ試験項目ついて試験を行い、その評価を集計した。本発明実施例2の使用に際しては歯面刷掃にはPBTフィラメント部分を、歯肉マッサージにはナイロンフィラメント部分を集中使用するように指導した。尚、PBTフィラメント及びナイロンフィラメント共に2ミルのものを使用した。結果を表2に示す。
【0028】
【表2】
Figure 0003704749
【0029】
表2より明らかなように、本発明実施例2の歯間ブラシはナイロンフィラメントを前側部に配し、PBTフィラメントを後側部に配した結果、比較例3及び比較例4の好ましい特性のみを選択的に融合できていることがわかる。
【0030】
<比較試験3>
次に植毛部の毛切り形状の変化が前記試験項目にどのような影響を与えるかについて評価した。この試験には図6(a)〜(d)に示すように円錐型、円柱型、樽型、鼓型の植毛部を用い、前後に二分した植毛部の前側に柔毛を配し、後側に硬毛を配した。試験項目は比較試験1及び比較試験2と同様とした。使用する柔毛及び硬毛は比較試験1と同じとした。結果を表3に示す。
【0031】
【表3】
Figure 0003704749
【0032】
表3に記載した歯間ブラシは全て本発明実施例であるが、これらの中でも先細となっている円錐型及び樽型が歯間への挿入性に関して特に優れていることが確かめられた。
【0033】
【発明の効果】
本発明の歯間ブラシは、折り返したワイヤ間に複数本のフィラメントよりなる毛束を挟み込んだ状態でこのワイヤを捻じることにより、ワイヤ軸に沿ってフィラメントを植毛したブラシを備える歯間ブラシであって、前記フィラメントの植毛部を、ワイヤ軸方向において二つ以上の領域に区分し、となりあう領域に互いに材質の異なるフィラメントを植毛し、前記植毛部の2つ以上の領域のうち、前側の領域に植毛されるフィラメント後側の領域に植毛されるフィラメントよりも柔毛のものを用いたので、歯垢除去効果に優れるとともに歯肉マッサージ効果にも優れ、且つ歯間への挿入も容易な歯間ブラシが得られ、1本で歯垢除去効果と歯肉マッサージ効果を発揮できる歯間ブラシが提供できる。そして、植毛部の特定部位を集中使用せず全体をまんべんなく使用した場合、歯間ブラシの押し引き動作に伴って歯肉マッサージと歯垢除去とが交互に行われることになる。
【図面の簡単な説明】
【図1】 (a),(b)は本発明が対象とする歯間ブラシの形態を示す正面図
【図2】 本発明の歯間ブラシの植毛部の一例であり植毛部をワイヤ軸方向に前後に二分した例を示す説明図
【図3】 本発明の歯間ブラシの植毛部の一例であり植毛部をワイヤ軸方向において3つの部分に区分した例を示す説明図
【図4】 植毛部の毛切り形状を示す説明図
【図5】 比較試験1及び比較試験2に用いた植毛部の形態を示す説明図
【図6】 比較試験3に用いた植毛部の形態を示す説明図
【図7】 代表的な従来の歯間ブラシを示す正面図
【図8】 植毛部の作製手順を示す工程説明図
【図9】 ピッカーを用いて原束から取り出した毛束をワイヤに供給する手順を示す工程説明図
【図10】 並設した巻装体から繰り出した毛束をワイヤに供給している様子を示す説明図
【符号の説明】
1 ブラシ 2 植毛部
3 ワイヤ
10 ハンドル 11 短軸基台
12 長軸ホルダー
20 ブラシ
21 ワイヤ 22 毛束
22a フィラメント 23 原束
24 ピッカー 24a 溝
25 毛束 25a フィラメント
26 リール 27 巻装体
30 ハンドル[0001]
[Industrial application fields]
The present invention relates to an interdental brush that is rich in changes, can realize various functions required as an interdental brush with a single brush, can selectively or simultaneously exhibit a plurality of functions, or can propose a new usage mode.
[0002]
[Prior art]
As shown in FIG. 7, the interdental brush mainly includes a brush 20 and a handle 30 that supports the brush 20. As shown in FIG. 8, the brush is produced by folding the wire 21 in the middle, then sandwiching the hair bundle 22 between the folded wires, twisting the wire 21, and finally shaping by hair cutting. As shown in FIG. 9, the hair bundle 22 sandwiched between the wires is pressed against an original bundle 23 obtained by bundling hundreds of thousands of filaments 22a having a predetermined length with a picker 24 having grooves 24a formed at predetermined intervals. 22a is taken out by hooking a certain number.
Although the number of filaments contained in a bundle of hairs taken out by the picker is almost determined by the size of the groove formed in the picker, the number of filaments cannot be made completely constant. There was a difference in the number of flocked and the density of the flocked state sometimes occurred.
[0003]
As a method for solving such a problem, a technique using a wound body in which a continuous hair bundle is wound instead of using a picker has been recently proposed. In this technique, as shown in FIG. 10, a plurality of wound bodies 27 formed by winding continuous hair bundles 25 in which several hundred filaments 25a are bundled around a reel 26 (three in the illustrated example). In this technique, a group of hair bundles arranged side by side and fed simultaneously from the plurality of wound bodies 27 are supplied between the wires 21, the hair bundles 25 are evenly distributed between the wires, and then the wires 21 are twisted. According to this technique, since the number of filaments contained in the hair bundle 25 fed out from the wound body 27 is always constant, the number of filaments implanted in one interdental brush can be made constant, and the flocked state can be reduced. It became possible to provide high quality interdental brushes.
[0004]
[Problems to be solved by the invention]
Although the above-mentioned technology has made it possible to provide a high-quality interdental brush, the above technology only assumes the production of a single-function interdental brush for the purpose of removing plaque.
However, in recent years, the functions required for interdental brushes are diversifying and complexing, and for example, those that can provide a gum removal effect as well as a plaque removal effect are desired. In general, hard filaments are suitable for removing plaque, while soft filaments are suitable for gingival massage.However, conventional interdental brushes have a uniform filament throughout the flocked area, and therefore are effective in removing plaque and gingival massage. Both cannot be realized with a single interdental brush.
Interdental brushes are thus required to have multiple functions. The contents of a plurality of functions required are not limited to the cleaning effect and the massage effect as described above, but extend to new functions and designs that are useful for improving usability.
The present invention has been made in view of such a current situation, and is rich in change, and a plurality of functions required as an interdental brush can be realized by a single interdental brush, or a new use can be made by adding a new function. It is an object of the present invention to provide an interdental brush whose aspect can be proposed.
[0005]
[Means for Solving the Problems]
That is, the present invention is an interdental brush comprising a brush in which a filament is planted along a wire axis by twisting this wire with a hair bundle composed of a plurality of filaments sandwiched between folded wires, The filament planted part is divided into two or more regions in the wire axis direction, and filaments of different materials are implanted in the adjacent region, and among the two or more regions of the planted part, the planted region is implanted. providing interdental brush comprising, using those fur than filaments planted on the rear side of the region filaments.
[0006]
Here, it is preferable to divide the flocked portion into two front and rear regions in the axial direction of the wire, dispose a fur filament in the front region, and dispose a bristle filament in the rear region. .
[0007]
When the filaments have different hardnesses as described above, the hard filaments are suitable for removing plaque because they have excellent rigidity and high pressure force transmission. On the other hand, soft filaments buffer and transmit pressure, making them suitable for gingival massage. When a soft filament is implanted on the front side, it is easy to insert between the teeth because it is easily deformed, and the front side The filament can massage without damaging the gums. In addition, by implanting a hard filament on the rear side, the plaque removal effect by the rear side of the flocking is also exhibited. And when not using the specific site | part of a hair transplant part intensively but using it whole, gingiva massage and plaque removal will be performed alternately with the pushing-pulling operation of the interdental brush.
[0008]
More specifically, it is preferable that the fluffy filament is made of polyamide (nylon) and the bristle filament is made of polybutylene terephthalate. Polyamide is easy to soften during use due to its high water absorption, while PBT tends to maintain hard properties due to its low water absorption.
[0013]
【Example】
Examples of the present invention will be described below.
FIG. 1 shows an example of an interdental brush that is an object of the present invention. The interdental brush is a disposable type in which the brush 1 is embedded and fixed in a short shaft handle 10 as shown in FIG. 1 (a), or the brush 1 is attached to the short shaft base 11 as shown in FIG. 1 (b). A type in which an embedded and fixed one is detachably attached to the long axis holder 12, or a long end of the long axis holder 12 is bent (not shown), and the brush and the handle are separately configured, and the brush is attached to the handle. And all of these are subject to the present invention.
[0014]
The interdental brush of the present invention is characterized in that the hair transplantation part is composed of two or more parts, and filaments having different physical properties are implanted in the adjacent parts. For example, as shown in FIG. 2, the planted portion 2 is divided into two front and rear regions in the axial direction of the wire 3, and the physical properties of the filaments planted in the front A region and the rear B region are changed, or FIG. As shown in Fig. 2, the hair transplantation part 2 is divided into three parts, a front end part, an intermediate part and a rear end part, and filaments are implanted in the A area as the front end part, the B area as the intermediate part and the C area as the rear end part It is conceivable to change the physical properties of each other. In some cases, the physical properties of the filaments implanted in the A region and the C region may be the same. In addition, the case where a hair transplant part is divided into four or more as needed is also considered.
[0015]
In the production of the hair transplantation part 2, the technology explained as FIG. 10, that is, the technology for feeding out the hair bundles from the wound bodies arranged side by side, the filaments constituting the hair bundle to be fed out have different physical properties. To do. As the wire 3 serving as the shaft member of the flocked portion 2, a stainless steel wire such as SUS304 or SUS316, a cobalt base alloy proposed in Japanese Patent Publication No. 35-9159, or the like can be used. As a cobalt-based alloy, for example, based on the chemical composition of Co: 30-50%, Cr: 20-30%, Ni: 10-25%, Fe: 10-20%, Mo: 0.1-10% And cobalt-based spring alloys. Using this metal, it is possible to realize durability without buckling or breaking of the wire during use while using a thin wire that can exhibit excellent insertion between the teeth, and the brush has a waist and operability In addition, an excellent interdental brush can be provided.
[0016]
Filaments having different physical properties refer to filaments that differ in one or more of material, hardness, thickness, and color. Also included are those that differ in elasticity and rigidity that are mutually related.
[0017]
Materials used for the filament include polyamide (nylon), polypropylene, polyethylene, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), and the like, and different materials are selected from these. Polyamide (nylon) is easy to soften during use due to its high water absorption, while PBT is easy to maintain hard properties due to low water absorption. The difference in material is a factor that directly or indirectly defines the filament hardness described later.
[0018]
The hardness of the filament is determined by the material and at the same time varies depending on the thickness of the filament. Hardness is also related to elasticity and rigidity. In general, a hard filament is excellent in rigidity and has high transmission of pressure, so it is suitable for removing plaque. On the other hand, soft filaments are suitable for gingival massage because they buffer and transmit pressure. Moreover, since a soft filament is easy to deform, it is used at the tip of the flocked portion that guides insertion between teeth.
[0019]
The thickness of the filament is also related to the hardness and ease of deformation of the filament. Usually, the interdental brush is a filament of 2 mil (where 1 mil = 1/1000 inch) to 4 mil. Fine wires of less than 2 mils are not normally used with conventional interdental brushes because they cannot be held with a picker. In this embodiment, as shown in FIG. 10, it is possible to implant fine hairs of less than 2 mils, such as 1 mil, by adopting a manufacturing method in which a bundle of hairs in which several hundred filaments are bundled is supplied to the wire. ing. If 1 mil of fine hair is implanted, the reachability of the interdental detail of the filament is dramatically increased.
[0020]
When the colors are different between the divided regions of the flocked part, there are a case where only the color of the same filament is changed and a case where the filament having a functional difference is further color-coded. The latter has the meaning of making it possible to visually recognize that there is a functional difference. The color coding can also be used as an index for knowing the insertion depth of the brush between the teeth. Alternatively, by making the tip of the flocked portion a color in which plaque and blood are conspicuous, it can be used as a means for knowing the plaque removal status and the presence or absence of gingivitis. For example, if the area A on the front side in FIG. 2 is white, if bleeding occurs due to gingivitis, the front side is contaminated in red, so the presence of gingivitis can be known immediately. When it is desired to know the removal status of plaque, the area A is preferably black. Because plaque is yellowish white, it stands out well against black.
[0021]
As described above, according to the present invention, a filament having a different material, hardness, thickness, or color is planted in a region of the hair transplanted portion, and elements other than the above-described elements, for example, a surface state or the like can be changed.
[0022]
As a more specific aspect of the present invention, a soft filament is disposed in the front A region in FIG. 2, while a harder filament is disposed in the rear B region. The interdental brush of such a combination can exhibit an excellent plaque removing effect by concentrating the hard hair portion, and can exhibit an excellent gingival massage effect by concentrating the fur portion. Moreover, since the front side part is soft hair, the interdental insertion property is also excellent. Furthermore, when the whole part is used without using the specific part of the flocked portion intensively, the gingival massage and the plaque removal are alternately performed with the push-pull operation of the interdental brush. The difference between soft hair and hard hair may be realized by a difference in the material of the filament, or may be realized by a difference in the thickness of the filament.
[0023]
As the hair cutting shape of the flocked portion, a conical shape, a columnar shape, a barrel shape, a drum shape or the like as shown in FIGS. From the viewpoint of interdental insertion, tapered cones and barrels are advantageous.
[0024]
In order to confirm the effect of the present invention, the present inventor conducted comparative tests 1 and 2 concerning the feeling of use for 20 panelists. In any of the comparative tests, an interdental brush having a cylindrical hair cutting shape having a diameter of 3 mm and a length of 10 mm as shown in FIG. 5 was used.
<Comparison test 1>
As shown in FIG.5 (c), the hair transplant part 2 was divided into two front and back in the wire axial direction, soft hair was arranged on the front side, and hard hair was arranged on the rear side, and it was set as Example 1 of this invention. Further, Comparative Example 1 (FIG. 5 (a)) in which the entire flocked portion is configured by the soft hair and Comparative Example 2 (FIG. 5 (b)) in which the entire flocked portion is configured by the hard hair are configured. In addition, for each of the present invention Example 1, Comparative Example 1, and Comparative Example 2, the “feel that the tooth surface was polished”, “feel to the gingiva”, and “ease of insertion” were evaluated. The number of people who showed a “good” feel was counted. Further, among the three types of interdental brushes, the total number of people who evaluated that the interdental brush was “best” was counted as “total evaluation”.
In the use of Example 1 of the present invention, guidance was given so that the bristle portion was used intensively for tooth surface cleaning and the soft hair portion was used for gingival massage. In addition, a 3 mil filament made of polyamide (nylon) was used as the bristles, and a 2 mil filament made of polyamide (nylon) was used as the soft hair. The results are shown in Table 1.
[0025]
[Table 1]
Figure 0003704749
[0026]
As is clear from Table 1, the interdental brush of Example 1 of the present invention has soft hairs arranged on the front side and hard hairs arranged on the rear side. As a result, only the preferable characteristics of Comparative Example 1 and Comparative Example 2 are obtained. It can be seen that they are selectively fused. In addition, the interdental brush of Comparative Example 1 composed entirely of soft hair does not feel that it was too soft and polished, and the interdental brush of Comparative Example 2 composed entirely of hard hair is too hard and painful. It became clear.
[0027]
<Comparison test 2>
In the same manner as described above, the flocked part 2 was divided into front and rear parts, a nylon filament was arranged on the front side, and a PBT filament was arranged on the rear side to obtain Example 2 of the present invention. Moreover, the comparative example 3 in which the whole flocked part was comprised with the nylon filament, and the interdental brush of the comparative example 4 in which the whole flocked part was comprised with the said PBT filament comprised this invention Example 1, Comparative Example 1, For each of Comparative Examples 2, tests were performed on the same test items as Comparative Test 1, and the evaluations were tabulated. In the use of Example 2 of the present invention, it was instructed to use the PBT filament part for tooth surface cleaning and the nylon filament part for gingival massage. Incidentally, both PBT filaments and nylon filaments were 2 mils. The results are shown in Table 2.
[0028]
[Table 2]
Figure 0003704749
[0029]
As is clear from Table 2, the interdental brush of Example 2 of the present invention has nylon filaments arranged on the front side and PBT filaments arranged on the rear side, and as a result, only the preferable characteristics of Comparative Example 3 and Comparative Example 4 are obtained. It can be seen that they are selectively fused.
[0030]
<Comparison test 3>
Next, it was evaluated how the change in the hair cutting shape of the flocked part affects the test items. In this test, as shown in FIGS. 6 (a) to 6 (d), a conical, columnar, barrel, and drum-shaped flocked portion was used, and soft hair was arranged on the front side of the flocked portion divided in the front and rear directions. Bristles were placed on the side. The test items were the same as those in Comparative Test 1 and Comparative Test 2. The fur and bristles used were the same as those in Comparative Test 1. The results are shown in Table 3.
[0031]
[Table 3]
Figure 0003704749
[0032]
All of the interdental brushes shown in Table 3 are examples of the present invention, but among these, it was confirmed that the tapered cone type and barrel type are particularly excellent in terms of insertion between teeth.
[0033]
【The invention's effect】
The interdental brush of the present invention is an interdental brush comprising a brush in which filaments are planted along a wire axis by twisting the wire in a state where a bundle of hairs composed of a plurality of filaments is sandwiched between folded wires. The filament hair transplantation section is divided into two or more regions in the wire axial direction, and filaments of different materials are planted in adjacent regions, and the front side of the two or more regions of the hair transplantation portion since used was the fur than filaments planted on the rear side of the region filaments planted in the area, excellent gum massaging effect is excellent in plaque removing effect, also easy and insertion between teeth An interdental brush can be obtained, and an interdental brush that can exhibit plaque removal effects and gingival massage effects with a single brush can be provided. And when not using the specific site | part of a hair transplant part intensively but using it whole, gingiva massage and plaque removal will be performed alternately with the pushing-pulling operation of the interdental brush.
[Brief description of the drawings]
FIGS. 1A and 1B are front views showing a form of an interdental brush targeted by the present invention. FIG. 2 is an example of a flocked portion of an interdental brush according to the present invention. Explanatory drawing which shows the example divided into front and rear in FIG. 3 is an example of a flocked portion of the interdental brush of the present invention, and is an explanatory diagram showing an example in which the flocked portion is divided into three parts in the wire axial direction. FIG. 5 is an explanatory diagram showing the shape of the flocked portion used in Comparative Test 1 and Comparative Test 2. FIG. 6 is an explanatory diagram showing the shape of the flocked portion used in Comparative Test 3. FIG. 7 is a front view showing a typical conventional interdental brush. FIG. 8 is a process explanatory diagram showing a procedure for producing a flocked portion. FIG. 9 is a procedure for supplying a hair bundle taken out from an original bundle to a wire using a picker. FIG. 10 is a process explanatory diagram showing a state in which a bundle of hairs fed from a winding body arranged in parallel is supplied to a wire. Explanatory drawing showing children [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Brush 2 Flocking part 3 Wire 10 Handle 11 Short shaft base 12 Long shaft holder 20 Brush 21 Wire 22 Hair bundle 22a Filament 23 Original bundle 24 Picker 24a Groove 25 Hair bundle 25a Filament 26 Reel 27 Winding body 30 Handle

Claims (3)

折り返したワイヤ間に複数本のフィラメントよりなる毛束を挟み込んだ状態でこのワイヤを捻じることにより、ワイヤ軸に沿ってフィラメントを植毛したブラシを備える歯間ブラシであって、
前記フィラメントの植毛部を、ワイヤ軸方向において2つ以上の領域に区分し、となりあう領域に互いに材質の異なるフィラメントを植毛し、
前記植毛部の2つ以上の領域のうち、前側の領域に植毛されるフィラメント後側の領域に植毛されるフィラメントよりも柔毛のものを用いてなる歯間ブラシ。
An interdental brush comprising a brush in which filaments are planted along a wire axis by twisting this wire in a state where a hair bundle composed of a plurality of filaments is sandwiched between folded wires,
The filament-filled portion is divided into two or more regions in the wire axial direction, and filaments of different materials are implanted in the adjacent regions,
Of the two or more regions of the flocked portion, interdental brush comprising, using those fur than filaments planted on the rear side of the region filaments planted on the front side of the region.
前記植毛部をワイヤの軸方向において前後2つの領域に区分し、前側の領域に柔毛のフィラメントを配し、且つ後側の領域に硬毛のフィラメントを配してなる請求項1記載の歯間ブラシ。  The tooth according to claim 1, wherein the flocked portion is divided into two front and rear regions in the axial direction of the wire, a fur filament is disposed in the front region, and a hard filament is disposed in the rear region. Brush between. 前記柔毛のフィラメントがポリアミドからなり、前記硬毛のフィラメントがポリブチレンテレフタレートからなる請求項2記載の歯間ブラシ。  The interdental brush according to claim 2, wherein the fur filament is made of polyamide, and the bristle filament is made of polybutylene terephthalate.
JP17384795A 1995-07-11 1995-07-11 Interdental brush Expired - Fee Related JP3704749B2 (en)

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KR200295540Y1 (en) * 2002-08-08 2002-11-22 문명진 A tooth brush of three dimensions structure
JP4568224B2 (en) * 2005-12-22 2010-10-27 優一郎 新崎 Twist brush
WO2009079802A1 (en) * 2007-12-21 2009-07-02 Peter Stieger Interdental cleaning brush
WO2009113681A1 (en) * 2008-03-13 2009-09-17 株式会社鳴門屋 Circular tubular toothbrush
JP5174510B2 (en) * 2008-03-31 2013-04-03 小林製薬株式会社 Interdental brush
JP5338232B2 (en) 2008-09-30 2013-11-13 サンスター株式会社 Interdental brush
KR200472006Y1 (en) * 2014-01-03 2014-04-02 현기봉 Interdendal brush
EP3275399B2 (en) * 2016-07-26 2021-07-21 M+C Schiffer GmbH Interdental cleaning element
JP7252715B2 (en) * 2018-04-27 2023-04-05 小林製薬株式会社 interdental cleaner
JP7191546B2 (en) * 2018-04-27 2022-12-19 小林製薬株式会社 interdental cleaner
WO2020011901A1 (en) * 2018-07-11 2020-01-16 Tepe Munhygienprodukter Ab Interdental brush having an insertion guidance tip

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