JP4515650B2 - toothbrush - Google Patents

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Publication number
JP4515650B2
JP4515650B2 JP2001054838A JP2001054838A JP4515650B2 JP 4515650 B2 JP4515650 B2 JP 4515650B2 JP 2001054838 A JP2001054838 A JP 2001054838A JP 2001054838 A JP2001054838 A JP 2001054838A JP 4515650 B2 JP4515650 B2 JP 4515650B2
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bundle
hair
chevron
interdental
cut
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JP2001054838A
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JP2002253345A (en
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隆一 井坂
海之 小林
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Lion Corp
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Lion Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、大きな歯間部でも小さな歯間部でも刷毛がくまなく進入できる歯ブラシに関する。
【0002】
実開昭61−97924号公報には、側面から見て隣り合う2つの毛束で1つの山形を形成するとともに、山形頂上部のブリッスルの先端にブリッスルの直径よりも大きい球状物を形成した歯ブラシが開示されている。この歯ブラシの場合、2束で1山を形成しているため、大きな歯間部にしか刷毛が進入できず、前歯などの小さな歯間部への刷毛の進入が困難である。さらに、ブリッスルの先端にブリッスルの直径よりも大きい球状物が形成されているので、歯間部の大小にかかわらず刷毛が進入しにくい。
【0003】
特表平5−508566号公報には、毛の先端が、側面から見てV字型形状(隣り合う2毛束で1山を形成)を呈する歯ブラシが開示されている。この歯ブラシの場合も、2束で1山を形成しているため、大きな歯間部にしか刷毛が進入できず、前歯などの小さな歯間部への刷毛の進入が困難である。
【0004】
特開2000−201739号公報には、植毛穴が長方形であって、該長方形の植毛穴が植毛面に対して傾斜しており、この植毛穴に植毛された各毛束の先端部が山切形状に加工された歯ブラシが開示されている。この歯ブラシの場合、大きな1種類の山しかないため、大きな歯間部にしか刷毛が進入できず、前歯などの小さな歯間部への刷毛の進入が困難である。
【0005】
実開昭58−14732号公報には、ブリッスル束を段切り(1束1山)とした歯ブラシが開示されている。この歯ブラシの場合、小さめの歯間部への進入・清掃には適しているが、大きめの歯間部の奥深くまでは刷毛が進入できず、大きめの歯間部の入口付近しか進入・清掃できない。
【0006】
【発明が解決しようとする課題】
本発明は、上記問題を解決するためになされたもので、大きな歯間部でも小さな歯間部でも刷毛がくまなく進入できる歯ブラシを提供することを課題とする。
【0007】
【課題を解決するための手段】
上記課題を達成するため、本発明は次のような手段を採用した。すなわち、本発明の歯ブラシは、歯間部の大小にかかわらず、刷毛の歯間進入性能と歯間進入実感を高めるため、ヘッド部を側面から見て、1束で1つの山形を形成するように先端刷掃面を毛切りされた毛束と、隣り合う2束で1つの山形を形成するように先端刷掃面を毛切りされた毛束とが混在するとともに、前記1束で1つの山形を形成するように先端刷掃面を毛切りされた毛束の最大毛丈を、隣り合う2束で1つの山形を形成するように先端刷掃面を毛切りされた毛束の最大毛丈よりも短く設定したものである。このような構成の歯ブラシとした場合、大きな歯間部でも小さな歯間部でも刷毛がくまなく進入でき、歯間進入性能と歯間進入実感が向上する。
【0008】
なお、前記ヘッド部長手方向に沿った最外周部に、1束で1つの山形を形成するように先端刷掃面を毛切りされた毛束を配置し、これ以外の毛束は隣り合う2束で1つの山形を形成するように先端刷掃面を毛切りされた毛束とすることが好ましい。また、前記1束で1つの山形を形成するように先端刷掃面を毛切りされた毛束の最大毛丈と、隣り合う2束で1つの山形を形成するように先端刷掃面を毛切りされた毛束の最大毛丈との毛丈差を0.5〜2mmとすればより好ましい。
【0009】
この種の歯ブラシにおいて、側面から見て刷掃面をV字型形状に形成する技術は、大正14年実用新案出願公告第20253号(出願人:八木徳太郎、公告日大正14年10月31日)で既に公知である。このように刷掃面をV字型にする目的は、上記公報にも記載されている通り、歯間部の清掃効果を高めること、すなわち刷毛の歯間進入性能を向上することである。
【0010】
ところで、口腔内には大きな歯間部と小さな歯間部が混在する。大きな歯間部は主に臼歯部の歯間部であり、小さな歯間部は主に前歯部の歯間部である。2束で1山を形づくるようにした大きめの山切り形状の歯ブラシの場合、大きめの歯間部への進入・清掃には適してはいるが、小さめの歯間部への進入・清掃には適さない。その理由は、2束1山は山部の刷毛の本数が多く、刷毛がお互いに干渉し合って小さな歯間部に進入しにくいためである。一方、1束で1山を形づくる小さめの山切り形状の歯ブラシの場合、小さめの歯間部への進入・清掃には適しているが、大きめの歯間部の奥深くまでは刷毛が進入できず、大きめの歯間部の入口付近しか進入・清掃できなかった。
【0011】
そこで、本発明者らは上記問題を解決すべく種々実験と検討を重ねた結果、1束で1つの山形を形成するように先端刷掃面を毛切りされた毛束と、隣り合う2束で1つの山形を形成するように先端刷掃面を毛切りされた毛束からなる2種類の大きさの山切り形状を持った歯ブラシを開発したものである。
【0012】
すなわち、本発明者らの得た結論に従えば、1束で1つの山を形成する「1束1山形状」では、1束で形成される山の頂きの角度が50度から60度、望ましくは55度程度、または/かつ山谷差が1.5〜2mmで、山の頂上に植設面と平行もしくは略平行な平面が存在しない仕様の歯ブラシが歯間進入性能と歯間進入実感に優れていることが分かった。これより山の頂きの角度が小さいかあるいは山谷差が大きいと、山部にある長めの刷毛の本数が減少して山部の刷毛全体の剛性が弱くなり、山部の刷毛が歯間部に入りにくくなり、歯間進入性能と歯間進入実感が弱まってしまう。逆に、山部の頂きの角度がこれより大きいと、山部にある長めの刷毛の本数が多くなりすきて相互に歯間部への進入を阻害し合い、山部の刷毛が歯間部に入りにくくなってしまう。
【0013】
一方、隣り合う2束で1つの山を形成する「2束1山形状」では、2束で形成される山の頂きの角度が60度から80度、望ましくは70度程度、または/かつ山谷差が2〜3mmで山の頂上に植設面と平行もしくは略平行な平面が存在しない仕様の歯ブラシが歯間進入性能と歯間進入実感がよいことが分かった。これより山の頂きの角度が小さいかあるいは山谷差が大きいと、山部にある長めの刷毛の本数が減少して山部の刷毛全体の剛性が弱くなり、山部の刷毛が歯間部に入りにくくなり、歯間進入性能と歯間進入実感が弱まってしまう。逆に、山部の頂きの角度がこれより大きいと、山部にある長めの刷毛の本数が多くなりすぎ相互に歯間部への進入を阻害し合い、山部の刷毛が歯間部に入りにくくなってしまう。
【0014】
そこで、本発明者らは、種々検討の結果、前記「1束1山形状」と「2束1山形状」の長所を兼ね備えた歯ブラシを開発したもので、ヘッド部の側面から見て、1束で1つの山形を形成するように先端刷掃面を毛切りされた毛束と、隣り合う2束で1つの山形を形成するように先端刷掃面を毛切りされた毛束とが混在するようにしたものである。この場合において、植毛部の長軸方向に沿った最外周部に、1束で1つの山形を形成するように先端刷掃面を毛切りされた毛束を配置し、これ以外の毛束は隣り合う2束で1つの山形を形成するように先端刷掃面を毛切りされた毛束とすれば、歯ブラシ生産時の毛切りが行ないやすくなり、工数を低減し、コストを下げることができる。
【0015】
さらに、1束で1山を形成する毛束の最大毛丈を、隣り合う2束で1山を形成する毛束の最大毛丈よりも短くすることにより、長めの2束1山が大きな歯間部の奥まで進入した時に、短めの1束1山が大きな歯間部の入口部をしっかりと清掃することができる。この最大毛丈の差は0.5〜2mm、最適値は1mmである。
【0016】
植毛する刷毛の最大長さ(2束1山の毛束の最大毛丈)は10〜12mm、好ましくは11mmとする。このような長さとした場合、歯間部に進入しやすい剛性と使用性を兼ね備えたものとなる。1束1山の毛束の好ましい最大毛丈は、2束1山の毛束の最大毛丈よりも0.5〜2mmだけ短くすればよいので、2束1山の毛束の最大毛丈が11mmの場合、10mm程度がよい。これも歯間部に進入しやすい剛性と使用性を兼ね備えている。
【0017】
使用する刷毛の太さは5ミル(0.125mmφ)〜12ミル(0.305mmφ)、好ましくは8ミル(0.203mmφ)が、刷毛の硬さの好みの点で一般的でよい。刷毛の素材は、一般的に広く使用されているポリアミド、ポリブチレンテレフタレート、天然毛など、いずれでもよい。また、毛束の太さ(直径)、毛束の断面形状(円形、正四角形、長方形など)、毛束が植毛されるヘッド部の幅・長さなどは特に限定がない。
【0018】
ヘッド部を含むハンドルの素材は、ポリプロピレン、ポリエステル、ポリアミド、ポリアリレートなどを使用することができる。また、2色成形ハンドルとする場合には、ポリオレフィン系TPE(TPE:熱可塑性エラストマー)、ポリスチレン系TPE、ポリウレタン系TPE、ポリエステル系TPE、天然ゴム系TPE、フッ素系TPEなど、さまざまなTPEを用いることができる。
【0019】
歯ブラシハンドル素材として求められる物性、価格などを考慮すると、1色成形ハンドルの場合はポリプロピレン、2色成形ハンドルの場合は、第1の合成樹脂(硬質樹脂)としてはポリプロピレン、第2の合成樹脂(軟質樹脂)としてはポリオレフィン系TPEを用いることが好ましい。
【0020】
【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第1の実施の形態を示す。
図において、1はヘッド部、2は毛束の植設面である。この第1の実施の形態は、ヘッド部1の長手方向に沿った最外周部に、1束で1つの山形を形成するようにその先端刷掃面3を毛切りされた毛束4を植毛し、これ以外の毛束は隣り合う2束で1つの山形を形成するようにその先端刷掃面5を毛切りされた毛束6を植毛した場合の例である。各毛束4、6の先端刷掃面3、5には、植設面2と平行もしくは略平行な面は何ら存在しないように設定されている。
【0021】
この第1の実施の形態による場合、最外周部にのみ1束で1つの山形を形成するようにその先端刷掃面3を毛切りされた毛束4が位置しているので、歯ブラシ生産時の毛切り処理が行ないやすくなり、工数とコストの低減を図ることができる。
【0022】
図2に、本発明に係る歯ブラシの第2の実施の形態を示す。
この第2の実施の形態は、前記第1の実施の形態と同様の構成において、1毛束1山を形成する毛束4の最大毛丈を、隣り合う2毛束で1山を形成する毛束6の最大毛丈よりも短く設定した場合の例である。この毛丈差dは0.5〜2mm、好ましくは1mmである。各毛束4、6の先端刷掃面3、5には、植設面2と平行もしくは略平行な面は何ら存在しないように設定されている。
【0023】
この第2の実施の形態による場合、毛丈差dを与えているので、長めの2束1山が大きな歯間部の奥まで進入した時に、短めの1束1山が大きな歯間部の入口部をしっかりと清掃することができる。
【0024】
図3に、本発明に係る歯ブラシの第3の実施の形態を示す。
この第3の実施の形態は、1束で1つの山形を形成するようにその先端刷掃面3を毛切りされた毛束4と、隣り合う2束で1つの山形を形成するようにその先端刷掃面5を毛切りされた毛束6とを混在させた場合の例である。各毛束4、6の先端刷掃面3、5には、植設面2と平行もしくは略平行な面は何ら存在しないように設定されている。
【0025】
この第3の実施の形態による場合、1束で1山の毛束4と、2束で1山の毛束6がへっ部1の植設面2に混在しているため、毛束4と毛束6が小さな歯間部と大きな歯間部に自由に入り込むことができ、優れた歯間部進入性能と歯間部刷掃実感を得ることができる。
【0026】
〔実験例〕
表1に、本発明の歯ブラシ(図3)と、従来例の歯ブラシ(図4、図5)を用いて行なった歯間進入性能の比較結果を示す。なお、図4の歯ブラシは、ヘッド部1の側面から見て、1束で1つの山形を形成するように先端刷掃面3を毛切りされた毛束13を植設面2の全面に植毛したものである。また、図5の歯ブラシは、ヘッド部1の側面から見て、隣り合う2束で1つの山形を形成するように先端刷掃面5を毛切りされた毛束6を植設面2の全面に植毛したものである。
【0027】
この表1から明らかなように、本発明の歯ブラシのように1束で1つの山形を形成するように先端刷掃面を毛切りされた毛束と、隣り合う2束で1つの山形を形成するように先端刷掃面を毛切りされた毛束を混在した場合、小さい歯間部での歯間進入性能と大きい歯間部での歯間進入性能のどちらも優れていることが確認された。なお、表中の各評価は次の基準によった。
○:歯間進入性能がよい。
△:どちらとも言えない
×:歯間進入性能がよくない
【0028】
【表1】

Figure 0004515650
【0029】
【発明の効果】
以上説明したように、本発明の歯ブラシによれば、以下のような優れた効果を奏することができる。
(1)1束で1つの山形を形成するように先端刷掃面を毛切りされた毛束と、隣り合う2束で1つの山形を形成するように先端刷掃面を毛切りされた毛束とが混在するので、歯間部の大小にかかわらず刷毛が歯間部に進入し、歯間進入性能と歯間進入実感を高めることができる。
(2)ヘッド部長手方向に沿った最外周部に、1束で1つの山形を形成するように先端刷掃面を毛切りされた毛束を配置し、これ以外の毛束は隣り合う2束で1つの山形を形成するように先端刷掃面を毛切りされた毛束としたので、歯ブラシ生産時の毛切り処理が行ないやすくなり、工数とコストの低減を図ることができる。
(3)1束で1つの山形を形成するように先端刷掃面を毛切りされた毛束の最大毛丈を、隣り合う2束で1つの山形を形成するように先端刷掃面を毛切りされた毛束の最大毛丈よりも短くしたので、長めの2束1山が大きな歯間部の奥まで進入した時に、短めの1束1山が大きな歯間部の入口部をしっかりと清掃することができる。
(4)1束で1山を形成する毛束の最大毛丈と隣り合う2束で1山を形成する毛束の最大毛丈との差を0.5〜2mmとした場合、最も優れた歯間部への進入性能と進入実感を得ることができる。
【図面の簡単な説明】
【図1】本発明に係る歯ブラシの第1の実施の形態を示す略示側面図である。
【図2】本発明に係る歯ブラシの第2の実施の形態を示す略示側面図である。
【図3】本発明に係る歯ブラシの第3の実施の形態を示す略示側面図である。
【図4】従来の歯ブラシの第1の例を示す略示側面図である。
【図5】従来の歯ブラシの第2の例を示す略示側面図である。
【符号の説明】
1 ヘッド部
2 植設面
3 先端刷掃面
4 1束で1山を形成する毛束
5 先端刷掃面
6 隣り合う2束で1山を形成する毛束[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a toothbrush in which a brush can enter all through a large interdental portion or a small interdental portion.
[0002]
Japanese Utility Model Laid-Open No. 61-97924 discloses a toothbrush in which one bristle is formed by two bristles adjacent to each other when viewed from the side, and a spherical object larger than the diameter of the bristle is formed at the tip of the bristle at the top of the chevron. Is disclosed. In the case of this toothbrush, one bundle is formed by two bundles, so that the brush can enter only the large interdental portion and it is difficult to enter the brush into the small interdental portion such as the front teeth. Furthermore, since a spherical object larger than the diameter of the bristle is formed at the tip of the bristle, it is difficult for the brush to enter regardless of the size of the interdental portion.
[0003]
Japanese Patent Laid-Open No. 5-508566 discloses a toothbrush in which the tips of the hairs have a V-shape (one mountain is formed by two adjacent hair bundles) when viewed from the side. In the case of this toothbrush as well, since one mountain is formed by two bundles, the brush can enter only the large interdental portion, and it is difficult for the brush to enter the small interdental portion such as the front teeth.
[0004]
In Japanese Patent Application Laid-Open No. 2000-201739, the flocked hole is rectangular, the rectangular flocked hole is inclined with respect to the flocked surface, and the tip of each hair bundle planted in the flocked hole is cut into a mountain. A toothbrush processed into a shape is disclosed. In the case of this toothbrush, since there is only one large mountain, the brush can enter only the large interdental part, and it is difficult to enter the brush into the small interdental part such as the front tooth.
[0005]
Japanese Utility Model Laid-Open No. 58-14732 discloses a toothbrush in which a bristles bundle is stepped (one bundle and one pile). This toothbrush is suitable for entering and cleaning small interdental parts, but the brush cannot penetrate deeply into large interdental parts, and only near the entrances of large interdental parts. .
[0006]
[Problems to be solved by the invention]
The present invention has been made to solve the above problems, and an object of the present invention is to provide a toothbrush in which a brush can enter all over a large interdental portion or a small interdental portion.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention employs the following means. That is, the toothbrush of the present invention forms a single chevron with one bundle when the head portion is viewed from the side in order to improve the interdental penetration performance and the interdental penetration feeling of the brush regardless of the size of the interdental portion. And a bundle of hairs whose tip brushing surface has been cut so as to form one chevron with two adjacent bundles . The maximum hair length of the hair bundle whose tip brushing surface is cut so as to form a chevron, and the maximum hair of the hair bundle whose tip brushing surface is cut so as to form one chevron with two adjacent bundles It is set shorter than the length . In the case of the toothbrush having such a configuration, the brush can enter all over the large interdental portion and the small interproximal portion, and the interdental penetration performance and the interdental penetration feeling are improved.
[0008]
In addition, a hair bundle whose tip cleaning surface is cut off is arranged on the outermost peripheral portion along the longitudinal direction of the head portion so as to form one chevron with one bundle, and the other hair bundles are adjacent to each other. It is preferable to use a bunch of hair whose end brushing surface is cut so that one bunch is formed by the bunch. Further, said one and up to hair length of tufts tip printing掃面are hair cutting so as to form a chevron in one bundle, the distal end printing掃面to form a single chevron with two bundles adjacent bristle It is more preferable that the difference in hair length from the maximum hair length of the cut hair bundle is 0.5 to 2 mm.
[0009]
In this type of toothbrush, the technology for forming the brushed surface into a V-shape when viewed from the side is disclosed in Taisho 14 utility model application publication No. 20253 (Applicant: Tokutaro Yagi, announcement date October 31, Taisho 14) ) Is already known. Thus, the purpose of making the brushed surface V-shaped is to improve the interdental cleaning effect, that is, to improve the interdental penetration performance of the brush, as described in the above publication.
[0010]
By the way, a large interdental part and a small interdental part are mixed in the oral cavity. The large interdental portion is mainly the interdental portion of the molar portion, and the small interdental portion is mainly the interdental portion of the front tooth portion. In the case of a toothbrush with a large mountain shape that forms one mountain with two bundles, it is suitable for entering and cleaning large interdental parts, but for entering and cleaning small interdental parts Not suitable. The reason is that two bundles and one crest have a large number of brushes in the crests, and the brushes interfere with each other and hardly enter the small interdental part. On the other hand, in the case of a small toothbrush shaped toothbrush that forms one ridge in one bundle, it is suitable for entry and cleaning into the smaller interdental part, but the brush cannot penetrate deeply into the larger interdental part. Only the vicinity of the entrance of the large interdental part could enter and clean.
[0011]
Therefore, the present inventors have conducted various experiments and studies in order to solve the above problem, and as a result, a bundle of hairs whose tip brushing surface has been cut so as to form one chevron with one bundle, and two bundles adjacent to each other. Thus, a toothbrush having two kinds of ridged shapes formed of a bundle of hairs whose tip brushing surface has been cut so as to form one chevron is developed.
[0012]
That is, according to the conclusion obtained by the present inventors, in the “one bundle one mountain shape” that forms one mountain by one bundle, the angle of the top of the mountain formed by one bundle is 50 to 60 degrees, Desirably about 55 degrees, and / or the difference between the peaks and valleys is 1.5 to 2 mm, the toothbrush of the specification that does not have a plane parallel to or substantially parallel to the planting surface on the top of the mountain, the interdental penetration performance and interdental penetration feeling I found it excellent. If the angle of the top of the peak is smaller or the difference between the peaks and valleys is large, the number of long brushes in the peak will decrease, and the rigidity of the peak brush will be weak, and the peak brush will be in the interdental area. It becomes difficult to enter, and the interdental penetration performance and the interdental penetration feeling are weakened. On the other hand, if the angle of the crest of the crest is larger than this, the number of long brushes in the crest increases and the entry to the interdental area interferes with each other. It becomes difficult to enter.
[0013]
On the other hand, in a “two-bundle-one-crest shape” in which two adjacent bundles form one mountain, the angle of the top of the mountain formed by two bundles is 60 to 80 degrees, preferably about 70 degrees, and / or It was found that a toothbrush having a difference of 2 to 3 mm and having no plane parallel to or substantially parallel to the planting surface at the top of the mountain has good interdental penetration performance and interdental penetration. If the angle of the top of the peak is smaller or the difference between the peaks and valleys is large, the number of long brushes in the peak will decrease, and the rigidity of the peak brush will be weak, and the peak brush will be in the interdental area. It becomes difficult to enter, and the interdental penetration performance and the interdental penetration feeling are weakened. On the other hand, if the angle of the peak of the peak is larger than this, the number of long brushes in the peak increases so that they enter each other and interfere with each other. It becomes difficult to enter.
[0014]
Therefore, as a result of various studies, the present inventors have developed a toothbrush that combines the advantages of the “one bundle one mountain shape” and the “two bundle one mountain shape”. A bundle of hairs whose tip brushed surface is cut to form one chevron with a bundle and a bundle of hairs whose tip brushed surface is cut to form one chevron with two adjacent bundles are mixed. It is what you do. In this case, on the outermost peripheral part along the major axis direction of the flocked portion, a hair bundle whose tip brushed surface is cut so as to form one chevron with one bundle is arranged, and the other hair bundles are If the tip brushing surface is a hair bundle that has been cut so that two adjacent bundles form one chevron, it will be easier to perform hair cutting during toothbrush production, reducing man-hours and costs. .
[0015]
Furthermore, by making the maximum hair length of the hair bundle forming one mountain by one bundle shorter than the maximum hair length of the hair bundle forming one mountain by two adjacent bundles, the longer two bundles and one mountain are larger teeth. When entering the back of the interspace, the short one-bundle and one crest can cleanly clean the large interdental entrance. The difference in maximum hair length is 0.5 to 2 mm, and the optimum value is 1 mm.
[0016]
The maximum length of the brush to be planted (the maximum length of two bundles and one pile) is 10 to 12 mm, preferably 11 mm. In such a length, it has both rigidity and usability that can easily enter the interdental portion. The preferred maximum hair length of a bundle of one bundle is only 0.5 to 2 mm shorter than the maximum length of a bundle of two bundles, so the maximum length of a bundle of two bundles Is about 10 mm. This also has both rigidity and usability to easily enter the interdental part.
[0017]
The thickness of the brush used may be generally 5 mils (0.125 mmφ) to 12 mils (0.305 mmφ), preferably 8 mils (0.203 mmφ) in view of the brush hardness preference. The material of the brush may be any of polyamide, polybutylene terephthalate, natural hair, etc. that are generally widely used. Further, the thickness (diameter) of the hair bundle, the cross-sectional shape of the hair bundle (circular, regular square, rectangular, etc.), the width and length of the head part where the hair bundle is implanted are not particularly limited.
[0018]
Polypropylene, polyester, polyamide, polyarylate, or the like can be used as the handle material including the head portion. In the case of a two-color molded handle, various TPEs such as polyolefin TPE (TPE: thermoplastic elastomer), polystyrene TPE, polyurethane TPE, polyester TPE, natural rubber TPE, fluorine TPE are used. be able to.
[0019]
Considering the physical properties and price required for the toothbrush handle material, polypropylene is used as the first synthetic resin (hard resin) in the case of the one-color molded handle, and the second synthetic resin (hard resin). It is preferable to use polyolefin TPE as the soft resin.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows a first embodiment of a toothbrush according to the present invention.
In the figure, 1 is a head part and 2 is a planting surface of a hair bundle. In the first embodiment, a hair bundle 4 having its tip brushed surface 3 cut off is formed on the outermost peripheral portion of the head portion 1 along the longitudinal direction so as to form one chevron with one bundle. However, the other hair bundles are examples in which the hair bundles 6 whose hairs are cut off at the tip cleaning surface 5 are planted so that one adjacent chevron is formed by two adjacent bundles. The tip brushing surfaces 3 and 5 of the hair bundles 4 and 6 are set so that there is no surface parallel or substantially parallel to the implantation surface 2.
[0021]
In the case of this first embodiment, since the bristles 4 whose tip brushed surfaces 3 are cut so as to form one chevron with only one bundle on the outermost peripheral part are located, the toothbrush is produced. It is easy to perform the hair cutting process, and the man-hour and cost can be reduced.
[0022]
FIG. 2 shows a second embodiment of the toothbrush according to the present invention.
In the second embodiment, in the same configuration as that of the first embodiment, the maximum hair length of the hair bundle 4 forming one hair bundle and one pile is formed by two adjacent hair bundles. This is an example when the hair length is set shorter than the maximum hair length of the hair bundle 6. This hair height difference d is 0.5 to 2 mm, preferably 1 mm. The tip brushing surfaces 3 and 5 of the hair bundles 4 and 6 are set so that there is no surface parallel or substantially parallel to the implantation surface 2.
[0023]
In the case of the second embodiment, since the hair length difference d is given, when the long two bundles and one mountain enter the back of the large interdental portion, the short one bundle and one large pile of the interdental portion. The entrance can be cleaned thoroughly.
[0024]
FIG. 3 shows a third embodiment of the toothbrush according to the present invention.
In this third embodiment, the tip brushing surface 3 is hair-cut 4 so that one bundle forms one chevron, and two adjacent bundles form one chevron. This is an example in the case where the tip brushing surface 5 is mixed with the hair bundle 6 that has been cut off. The tip brushing surfaces 3 and 5 of the hair bundles 4 and 6 are set so that there is no surface parallel or substantially parallel to the implantation surface 2.
[0025]
In the case of this third embodiment, one bundle of hair bundles 4 in one bundle and one bundle of hair bundles 6 in two bundles are mixed on the planting surface 2 of the end portion 1, so that the hair bundle 4 The hair bundle 6 can freely enter the small interdental portion and the large interproximal portion, and excellent interproximal portion entry performance and interdental brushing feeling can be obtained.
[0026]
[Experimental example]
Table 1 shows a comparison result of interdental penetration performance performed using the toothbrush of the present invention (FIG. 3) and the conventional toothbrush (FIGS. 4 and 5). Note that the toothbrush of FIG. 4 has a hair bundle 13 having the tip brushing surface 3 cut off so as to form a single chevron with one bundle as viewed from the side of the head portion 1. It is a thing. Further, the toothbrush of FIG. 5 has an entire surface of the planting surface 2 in which the bristles 6 having the tip brushing surface 5 cut off so as to form one chevron with two adjacent bundles as viewed from the side of the head portion 1. It has been flocked.
[0027]
As can be seen from Table 1, a hair bundle whose tip brushed surface is cut so as to form one chevron in one bundle like the toothbrush of the present invention, and one chevron is formed by two adjacent bundles. It is confirmed that both the interdental penetration performance at the small interdental portion and the interdental penetration performance at the large interproximal portion are excellent when the hair bundle with the tip brushing surface cut off is mixed. It was. Each evaluation in the table was based on the following criteria.
○: Interdental penetration performance is good.
Δ: Neither can be said ×: Interproximal penetration performance is poor [0028]
[Table 1]
Figure 0004515650
[0029]
【The invention's effect】
As described above, according to the toothbrush of the present invention, the following excellent effects can be obtained.
(1) A hair bundle whose tip cleaning surface is cut so as to form one chevron with one bundle, and a hair whose tip cleaning surface is cut so as to form one chevron with two adjacent bundles Since the bundle is mixed, the brush enters the interdental portion regardless of the size of the interdental portion, and the interdental entry performance and the interdental entry feeling can be enhanced.
(2) A bundle of hairs whose tip brushed surface has been cut so as to form one chevron with one bundle is arranged on the outermost peripheral portion along the longitudinal direction of the head portion, and the other bundles of hair are adjacent to each other. Since the tip brushing surface is a hair bundle cut so as to form one chevron with the bundle, it becomes easy to perform the hair cutting process at the time of toothbrush production, and man-hours and costs can be reduced.
(3) The maximum bristle length of the hair bundle that has been cut off at the tip brushing surface so as to form one chevron with one bundle, and the tip brushing surface at the hair tip so as to form one chevron with two adjacent bundles Since it is shorter than the maximum hair length of the cut hair bundle, when the long two bundles and one peak enter the back of the large interdental portion, the short one bundle and the single pin firmly secure the entrance portion of the large interdental portion. Can be cleaned.
(4) When the difference between the maximum hair length of the hair bundle forming one mountain by one bundle and the maximum hair length of the hair bundle forming one mountain by two adjacent bundles is 0.5 to 2 mm, the most excellent It is possible to obtain the penetration performance to the interdental portion and the actual feeling of entry.
[Brief description of the drawings]
FIG. 1 is a schematic side view showing a first embodiment of a toothbrush according to the present invention.
FIG. 2 is a schematic side view showing a second embodiment of a toothbrush according to the present invention.
FIG. 3 is a schematic side view showing a third embodiment of a toothbrush according to the present invention.
FIG. 4 is a schematic side view showing a first example of a conventional toothbrush.
FIG. 5 is a schematic side view showing a second example of a conventional toothbrush.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Head part 2 Planting surface 3 Tip cleaning surface 4 Hair bundle which forms one peak with one bundle 5 Tip cleaning surface 6 Hair bundle which forms one mountain with two adjacent bundles

Claims (3)

毛束を植毛されたヘッド部と、該ヘッド部に続く首部および握り部を有する歯ブラシにおいて、ヘッド部を側面から見て、1束で1つの山形を形成するように先端刷掃面を毛切りされた毛束と、隣り合う2束で1つの山形を形成するように先端刷掃面を毛切りされた毛束とが混在するとともに、前記1束で1つの山形を形成するように先端刷掃面を毛切りされた毛束の最大毛丈を、隣り合う2束で1つの山形を形成するように先端刷掃面を毛切りされた毛束の最大毛丈よりも短く設定したことを特徴とする歯ブラシ。In a toothbrush having a head part in which a hair bundle is implanted, and a neck part and a grip part that follows the head part, the head surface is viewed from the side, and the tip brushing surface is cut so as to form one chevron with one bundle. The bundle of hairs and the bundle of hairs whose tip brushing surfaces are cut so as to form one chevron by two adjacent bundles are mixed , and the tip printing is performed so that one chevron is formed by the one bundle. The maximum hair length of the hair bundle whose hair is cut off is set to be shorter than the maximum hair length of the hair bundle whose hair is cut off at the tip so as to form one chevron with two adjacent bundles. A featured toothbrush. ヘッド部長手方向に沿った最外周部に、1束で1つの山形を形成するように先端刷掃面を毛切りされた毛束を配置し、これ以外の毛束は隣り合う2束で1つの山形を形成するように先端刷掃面を毛切りされた毛束としたことを特徴とする請求項1記載の歯ブラシ。  On the outermost peripheral part along the longitudinal direction of the head part, a bundle of hairs whose tip brushing surface has been cut so as to form one chevron with one bundle is arranged, and the other bundles are 1 in 2 bundles adjacent to each other. The toothbrush according to claim 1, wherein the tip brushing surface is a hair bundle that is cut off so as to form two chevron shapes. 前記1束で1つの山形を形成するように先端刷掃面を毛切りされた毛束の最大毛丈と、隣り合う2束で1つの山形を形成するように先端刷掃面を毛切りされた毛束の最大毛丈との毛丈差が0.5〜2mmであることを特徴とする請求項1または2記載の歯ブラシ。 The maximum hair length of the hair bundle whose tip brushing surface is cut so as to form one chevron with the one bundle, and the tip brushing surface is shaved so as to form one chevron with two adjacent bundles. The toothbrush according to claim 1 , wherein a difference in hair length from a maximum hair length of the hair bundle is 0.5 to 2 mm.
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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5814732U (en) * 1981-07-24 1983-01-29 花王株式会社 toothbrush
JPS6197924U (en) * 1984-12-05 1986-06-23
JPH0312425Y2 (en) * 1987-10-23 1991-03-25
JPH0382023U (en) * 1989-12-15 1991-08-21
JPH0521728U (en) * 1991-09-11 1993-03-23 信雄 石橋 toothbrush
JPH05508566A (en) * 1990-06-19 1993-12-02 ザ、プロクター、エンド、ギャンブル、カンパニー An improved toothbrush that has bristles with a three-dimensional outline and rounded bristles to reduce irritation to the gums and thoroughly brush between the teeth.
JP2000014451A (en) * 1998-06-30 2000-01-18 Lion Corp Toothbrush
WO2000015075A1 (en) * 1998-09-10 2000-03-23 Optiva Corporation Improved brushhead for a toothbrush
JP2000201739A (en) * 1999-01-13 2000-07-25 Sunstar Inc Tooth brush
WO2000071073A1 (en) * 1999-05-24 2000-11-30 Koninklijke Philips Electronics N.V. Apparatus and method for treatment of xerostomia

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5814732U (en) * 1981-07-24 1983-01-29 花王株式会社 toothbrush
JPS6197924U (en) * 1984-12-05 1986-06-23
JPH0312425Y2 (en) * 1987-10-23 1991-03-25
JPH0382023U (en) * 1989-12-15 1991-08-21
JPH05508566A (en) * 1990-06-19 1993-12-02 ザ、プロクター、エンド、ギャンブル、カンパニー An improved toothbrush that has bristles with a three-dimensional outline and rounded bristles to reduce irritation to the gums and thoroughly brush between the teeth.
JPH0521728U (en) * 1991-09-11 1993-03-23 信雄 石橋 toothbrush
JP2000014451A (en) * 1998-06-30 2000-01-18 Lion Corp Toothbrush
WO2000015075A1 (en) * 1998-09-10 2000-03-23 Optiva Corporation Improved brushhead for a toothbrush
JP2000201739A (en) * 1999-01-13 2000-07-25 Sunstar Inc Tooth brush
WO2000071073A1 (en) * 1999-05-24 2000-11-30 Koninklijke Philips Electronics N.V. Apparatus and method for treatment of xerostomia

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