JP5401154B2 - Toothbrush and manufacturing method thereof - Google Patents

Toothbrush and manufacturing method thereof Download PDF

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JP5401154B2
JP5401154B2 JP2009099855A JP2009099855A JP5401154B2 JP 5401154 B2 JP5401154 B2 JP 5401154B2 JP 2009099855 A JP2009099855 A JP 2009099855A JP 2009099855 A JP2009099855 A JP 2009099855A JP 5401154 B2 JP5401154 B2 JP 5401154B2
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hair
hair bundle
bundle
toothbrush
tip
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JP2010246756A (en
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徹弥 阿部
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Lion Corp
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Lion Corp
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Priority to KR1020117022260A priority patent/KR101640274B1/en
Priority to CN201080016418.1A priority patent/CN102395295B/en
Priority to PCT/JP2010/002737 priority patent/WO2010119688A1/en
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    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B3/00—Brushes characterised by the way in which the bristles are fixed or joined in or on the brush body or carrier
    • A46B3/16—Brushes 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
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/04—Arranged like in or for toothbrushes
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B9/00—Arrangements of the bristles in the brush body
    • A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
    • A46B9/026—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups where the surface of the brush body or carrier is not in one plane, e.g. not flat
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46D—MANUFACTURE OF BRUSHES
    • A46D1/00—Bristles; Selection of materials for bristles
    • A46D1/02—Bristles details
    • A46D1/0276—Bristles having pointed ends

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  • Brushes (AREA)

Description

本発明は、ヘッド部の植毛面に複数の毛束が植設されてなる歯ブラシ及びその製造方法に関する。   The present invention relates to a toothbrush in which a plurality of hair bundles are implanted on a flocked surface of a head portion and a method for manufacturing the toothbrush.

歯ブラシの基本機能としては、口腔内の清掃効果やマッサージ効果などがある。歯ブラシは、その基本機能の向上を図るため、従来より歯間進入性や、清掃実感、マッサージ性などを付加している。そして、このような歯ブラシの高付加価値化を図るためには、植毛穴の配置や形状、刷毛の種類や形状、毛束の毛切り形状などを複雑に組み合わせた仕様が一般に有効である（例えば、特許文献１〜４などを参照）。   The basic functions of the toothbrush include an oral cleaning effect and a massage effect. In order to improve the basic functions of toothbrushes, interdental penetration, cleaning feeling, massage and the like have been added. In order to increase the added value of such a toothbrush, a specification in which the arrangement and shape of the flock holes, the type and shape of the brush, the hair cutting shape of the hair bundle, etc. are generally effective (for example, , See Patent Documents 1 to 4).

また、多くの歯ブラシが機能性や外観差別性を得るために、複雑な毛切り形状を取り入れている一方で、いわゆる平切りにより毛束の先端が平らに剪定された歯ブラシも、その馴染みのある使用性から、現在も多くの人に支持され続けている。   In addition, many toothbrushes have a complicated hair-cut shape to obtain functionality and appearance distinction, while toothbrushes that have their hair bundles flattened by so-called flat cutting are also familiar. From the usability, it continues to be supported by many people.

平切りされた歯ブラシは、特別な毛切り形状を有していないが故に、口腔内のあらゆる部位に対して平均して高い清掃性や使用性が得られるのが特徴である。その一方で、平切りされた歯ブラシには、機能性や使用実感において差別性が得られにくいといった課題がある。   Since the flat-cut toothbrush does not have a special hair-cut shape, it is characterized in that high cleaning properties and usability can be obtained on average in every part of the oral cavity. On the other hand, a flat toothbrush has a problem that it is difficult to obtain discrimination in terms of functionality and feeling of use.

また、平切りされた歯ブラシでは、一般的にスタンダード仕様として、オールラウンドな機能性や使用性を訴求するものが多い。このため、一見して複雑な穴配列パターンや複数の用毛種の使用がわかるヘッド部は、外観から想起されるイメージが訴求と沿わない場合がある。したがって、シンプルなヘッド部の外観を維持したまま、差別性の獲得が望まれる。   In addition, many flat toothbrushes generally appeal for all-round functionality and usability as standard specifications. For this reason, the head part which understands use of a complicated hole arrangement pattern and a plurality of hair types at first glance may not follow the appeal from the appearance. Therefore, it is desired to obtain discrimination while maintaining the simple appearance of the head portion.

特開平１０−２２５３２４号公報JP-A-10-225324 特開２００２−３３０８２４号公報JP 2002-330824 A 特開２００４−１４８０９５号公報JP 2004-148095 A 特表２００６−５１４８５４号公報JP-T-2006-514854

本発明は、このような従来の事情に鑑みて提案されたものであり、特別な毛切り形状に因らずに、また、複雑な毛束配列や複数の用毛種を必要とせずに、機能性や使用感において容易に差別化を図ることができる設計自由度の高い歯ブラシ及びその製造方法を提供することを目的とする。   The present invention has been proposed in view of such a conventional situation, without depending on a special hair cutting shape, and without requiring a complex hair bundle arrangement and a plurality of hair types, An object of the present invention is to provide a toothbrush having a high degree of design freedom and a method for manufacturing the same that can be easily differentiated in terms of functionality and usability.

上記目的を達成するために、請求項１に係る発明は、ヘッド部の植毛面に設けられた複数の植毛穴に、平線を挟んで二つ折りにされた複数の毛束が植設されてなり、毛束は、毛先に向かって漸次径が細くなるテーパー用毛を含み、且つ、先端径が異なるテーパー用毛の毛束がヘッド部の植毛面に植設されることによって、ヘッド部の植毛面に植設された毛束の先端径に分布を持たせた歯ブラシであって、
テーパー用毛の毛束を一端と他端との間で高低差を設けて植設した後に、毛束の先端を平らに剪定することによって、毛束の先端径を異ならせてなることを特徴とする歯ブラシである。 In order to achieve the above object, the invention according to claim 1 is characterized in that a plurality of hair bundles folded in half with a flat wire are implanted in a plurality of flock holes provided on a flocked surface of a head portion. Do Ri, tuft comprises bristles taper progressively diameter toward the bristles becomes narrower, and, by the tip diameter tuft hair for different taper is implanted in flocked surface of the head portion, the head A toothbrush having a distribution in the tip diameter of the hair bundle planted on the flocked surface of the part ,
After the hair bundle for taper is planted with a height difference between one end and the other end, the tip diameter of the hair bundle is pruned flat to make the tip diameter of the hair bundle different. It is a toothbrush.

また、請求項２に係る発明は、高低差を設けた毛束のうち、隣り合う一方の毛束の短毛側と、他方の毛束の長毛側とを対向させて、他方の毛束の長毛側の毛丈を一方の毛束の短毛側の毛丈と同じかそれよりも短くすると共に、毛束の先端を平らに切り揃えることによって、一方の毛束から他方の毛束に向かって毛束の先端径が順に小さくなる分布を持たせたことを特徴とする請求項１に記載の歯ブラシである。 Moreover, the invention which concerns on Claim 2 makes the short hair side of the adjacent one hair bundle, and the long hair side of the other hair bundle among the hair bundles provided with the difference in height, the other hair bundle. Make the length of the long hair side the same as or shorter than the length of the short hair side of one of the hair bundles, and cut the tip of the hair bundle flatly to move from one hair bundle to the other. The toothbrush according to claim 1 , wherein the toothbrush has a distribution in which the tip diameter of the hair bundle decreases in order.

また、請求項３に係る発明は、ヘッド部の植毛面に、少なくとも３つ以上の高低差を設けた毛束によって構成される毛束群が設けられ、毛束群を構成する各毛束の平線の向きは、それぞれの平線の延長線によって１つの囲み領域を区画する方向に設定され、且つ、囲み領域の内側には、各毛束の長毛側又は短毛側の何れか一方が配置されると共に、毛束の先端を平らに切り揃えることによって、囲み領域の内側に向かって毛束の先端径が順に大きくなる又は小さくなる分布を持たせたことを特徴とする請求項１又は２に記載の歯ブラシである。 Moreover, the invention which concerns on Claim 3 is provided with the hair | bristle bundle group comprised by the hair | bristle bundle of the at least 3 or more height difference in the hair transplant surface of a head part, and each hair | bristle bundle which comprises a hair | bristle bundle group is provided. The direction of the flat line is set in a direction in which one enclosed region is defined by an extension of each flat line, and either the long hair side or the short hair side of each hair bundle is located inside the enclosed region. while being positioned by aligning cut into flat tip tufts, claim, characterized in that to have a sequentially larger or smaller distribution tip diameter of the hair bundle toward the inside of the enclosed region 1 or 2. The toothbrush according to 2 .

また、請求項４に係る発明は、請求項１〜３のいずれか１項に記載の歯ブラシの製造方法であって、毛先に向かって漸次径が細くなるテーパー用毛の毛束を用いて、ヘッド部の植毛面に設けられた複数の植毛穴に、平線を挟んで二つ折りにされたテーパー用毛の毛束を一端と他端との間で高低差を設けて植設した後に、毛束の先端を平らに剪定し、ヘッド部の植毛面に植設された毛束の先端径を異ならせることを特徴とする歯ブラシの製造方法である。 Moreover, the invention which concerns on Claim 4 is a manufacturing method of the toothbrush of any one of Claims 1-3, Comprising: Using the hair | bristle bundle | flux of the taper hair whose diameter decreases gradually toward a hair tip After planting a plurality of flock holes provided on the flocked surface of the head portion with a hair bundle of taper hair folded in half across a flat line with a height difference between one end and the other end A method for producing a toothbrush characterized in that the tips of the hair bundles are pruned flat and the tip diameters of the hair bundles planted on the flocked surface of the head portion are made different.

以上のように、本発明によれば、ヘッド部の植毛面に植設された毛束の先端径に分布を持たせることで、特別な毛切り形状に因らずに、また、複雑な毛束配列や複数の用毛種を必要とせずに、機能性や使用感において容易に差別化を図ることが可能である。また、本発明によれば、そのような設計自由度の高い歯ブラシを安価に製造することが可能である。   As described above, according to the present invention, the distribution of the tip diameters of the hair bundles planted on the hair-planting surface of the head portion allows the complex hairs to be used regardless of the special hair-cut shape. It is possible to easily differentiate in functionality and feeling of use without requiring a bundle arrangement and a plurality of hair types. Further, according to the present invention, it is possible to manufacture such a toothbrush having a high degree of design freedom at a low cost.

図１（ａ）は、本発明を適用した歯ブラシの一例を示す側面図、図１（ｂ）は、図１（ａ）中に示す囲み部分Ｘの拡大図である。Fig.1 (a) is a side view which shows an example of the toothbrush to which this invention is applied, FIG.1 (b) is an enlarged view of the enclosure part X shown in Fig.1 (a). 図２は、ヘッド部を植毛面側から見た平面図である。FIG. 2 is a plan view of the head portion viewed from the flocked surface side. 図３（ａ）は、テーパー用毛を示す平面図、図３（ｂ）は、テーパー用毛を平線を挟んで折り返した平面図である。FIG. 3A is a plan view showing the taper hair, and FIG. 3B is a plan view of the taper hair turned back across a flat line. 図４（ａ）は、ヘッド部を長さ方向から見た側面図、図４（ｂ）は、ヘッド部を幅方向から見た側面図である。4A is a side view of the head portion viewed from the length direction, and FIG. 4B is a side view of the head portion viewed from the width direction. 図５は、ヘッド部の植毛面に植設された毛束を示す側面図である。FIG. 5 is a side view showing a hair bundle planted on the hair surface of the head portion. 図６は、図６（ａ）は、変形例として示すヘッド部を長さ方向から見た側面図、図６（ｂ）は、変形例として示すヘッド部を幅方向から見た側面図である。6A is a side view of the head portion shown as a modification as seen from the length direction, and FIG. 6B is a side view of the head portion as a variant as seen from the width direction. .

以下、本発明を適用した歯ブラシ及びその製造方法について、図面を参照して詳細に説明する。
なお、以下の説明で用いる図面は、特徴をわかりやすくするために、便宜上特徴となる部分を模式的に示している場合があり、各構成要素の寸法比率などが実際と同じであるとは限らない。また、場合によって毛束の図示を省略するものとする。 Hereinafter, a toothbrush to which the present invention is applied and a manufacturing method thereof will be described in detail with reference to the drawings.
In the drawings used in the following description, in order to make the features easy to understand, there are cases in which the portions that become the features are schematically shown for convenience, and the dimensional ratios of the respective components are not always the same as the actual ones. Absent. In some cases, the illustration of the hair bundle is omitted.

本発明の実施形態として図１に示す歯ブラシ１は、全体が長尺状を為すブラシハンドル１Ａを備え、このブラシハンドル１Ａは、ハンドル部２と、このハンドル部２の先端側に設けられたヘッド部３と、ハンドル部２とヘッド部３との間に設けられたネック部４とを有して構成されている。   A toothbrush 1 shown in FIG. 1 as an embodiment of the present invention is provided with a brush handle 1A having a long shape as a whole. The brush handle 1A includes a handle portion 2 and a head provided on the distal end side of the handle portion 2. It has a portion 3 and a neck portion 4 provided between the handle portion 2 and the head portion 3.

ブラシハンドル１Ａは、ハンドル部２と、これに連なるネック部４と、これに連なるヘッド部３とが、例えば硬質樹脂材料により一体成形されたものからなる。ブラシハンドル１Ａに使用される硬質樹脂材料としては、例えば、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、ポリシクロヘキシレンジメチレンテレフタレート、飽和ポリエステル樹脂、ポリメタクリル酸メチル、プロピオン酸セルロース、ポリウレタン、ポリアミド、ＡＢＳ（アクロル二トリル・ブタジエン・スチレン）などの熱可塑性樹脂材料を挙げることができるが、これらの材料に必ずしも限定されるものではない。   The brush handle 1A includes a handle portion 2, a neck portion 4 connected to the handle portion 2, and a head portion 3 connected to the handle portion 2, which are integrally formed of, for example, a hard resin material. Examples of the hard resin material used for the brush handle 1A include polypropylene, polyethylene, polyethylene terephthalate, polycyclohexylene dimethylene terephthalate, saturated polyester resin, polymethyl methacrylate, cellulose propionate, polyurethane, polyamide, ABS (acrylonitrile). Thermoplastic resin materials such as (tolyl, butadiene, styrene) can be mentioned, but the material is not necessarily limited to these materials.

ハンドル部２は、使用者が把持する部分であり、このハンドル部２には、把持性を向上させるため、例えばエラストマーなどの柔軟な樹脂を部分的又は全体に被覆形成してもよい。ネック部４は、ハンドル部２とヘッド部３との間を連結する部分であるが、ハンドル部２及びヘッド部３と必ずしも明確に区別される部分ではないため、場合によってハンドル部２とネック部４との区別がないものもある。したがって、ブラシハンドル１Ａは、ハンドル部２の先端にヘッド部３が直接設けられた形状のものであってもよく、その形状や、大きさ、デザイン等については任意に変更して実施することができる。   The handle portion 2 is a portion that is gripped by the user, and the handle portion 2 may be partially or entirely covered with a flexible resin such as an elastomer in order to improve gripping properties. The neck portion 4 is a portion that connects the handle portion 2 and the head portion 3, but is not necessarily clearly distinguished from the handle portion 2 and the head portion 3. Some are not distinguished from 4. Therefore, the brush handle 1A may have a shape in which the head portion 3 is directly provided at the tip of the handle portion 2, and the shape, size, design, and the like can be arbitrarily changed and implemented. it can.

ヘッド部３は、口腔内を清掃しやすい形状や大きさであればよく、その形状について特に限定されるものではないものの、一般的に略直方体状を為している。そして、このヘッド部３の一面（植毛面という。）３ａには、図２に示すように、刷毛５の毛束６Ａ，６Ｂを植設するための複数の植毛穴７が当該ヘッド部３の長さ方向と幅方向とに列をなして設けられている。   The head portion 3 may have any shape or size that can easily clean the inside of the oral cavity, and the shape is not particularly limited, but generally has a substantially rectangular parallelepiped shape. Further, as shown in FIG. 2, a plurality of flocking holes 7 for planting the hair bundles 6 </ b> A and 6 </ b> B of the brush 5 are formed on one surface (referred to as flocking surface) 3 a of the head portion 3. It is provided in a row in the length direction and the width direction.

毛束６Ａ，６Ｂには、歯間部や歯茎部などに対する毛先進入性を向上させるため、この毛束６Ａ，６Ｂを構成する各刷毛５の毛先形状を先鋭化したもの、すなわち図３に示すように、その中央側から両端の毛先５ａに向かって漸次径が細くなる刷毛（以下、テーパー用毛という。）５が用いられている。   In the hair bundles 6A and 6B, in order to improve the hair tip entry property with respect to the interdental part, the gum part and the like, the hair tips of the brushes 5 constituting the hair bundles 6A and 6B are sharpened, that is, FIG. As shown in FIG. 1, a brush (hereinafter referred to as a taper hair) 5 whose diameter gradually decreases from the center side toward the hair tips 5a at both ends is used.

テーパー用毛５の材質については、特に限定されるものではなく、例えば、ポリアミド（例：６−１２ナイロン、６−１０ナイロン）、ポリエステル（例：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）、ポリオレフィン（例：ポリプロピレン）、エラストマー（例：オレフィン系、スチレン系）などの合成樹脂材料を用いることができる。また、これらの樹脂材料を複数組み合わせて用いてもよく、例えば芯鞘構造などのように、芯部と鞘部で異なる樹脂材料を用いることもできる。その中でも、テーパー用毛５には、所定の長さにカットされたポリブチレンテレフタレートからなる刷毛（フィラメント）をアルカリ性加水分解処理剤に浸漬し溶解することで毛先をテーパー状としたものを用いることが好ましい。   The material of the taper hair 5 is not particularly limited. For example, polyamide (eg, 6-12 nylon, 6-10 nylon), polyester (eg, polyethylene terephthalate, polybutylene terephthalate, polytrimethylene terephthalate) Synthetic resin materials such as polyolefin (eg, polypropylene) and elastomer (eg, olefin-based, styrene-based) can be used. A plurality of these resin materials may be used in combination. For example, different resin materials may be used for the core and the sheath, such as a core-sheath structure. Among these, for the taper hair 5, a brush (filament) made of polybutylene terephthalate cut to a predetermined length is dipped in an alkaline hydrolysis treatment agent and dissolved to have a tapered tip. It is preferable.

テーパー用毛５の毛丈は、ヘッド部３の植毛面３ａから、大人用で８ｍｍ〜１３ｍｍ、子供用で６ｍｍ〜９ｍｍとすることが好ましい。テーパー用毛５の太さ（最大径）は、口腔内の使用性や使用感の点から、０．１２ｍｍ〜０．２６ｍｍであることが好ましい。   The hair length of the taper hair 5 is preferably 8 mm to 13 mm for adults and 6 mm to 9 mm for children from the flocked surface 3 a of the head portion 3. The thickness (maximum diameter) of the taper bristles 5 is preferably 0.12 mm to 0.26 mm from the viewpoint of usability in the oral cavity and usability.

毛束６Ａ，６Ｂは、図２に示すように、上述した刷毛５を複数本束ねて二つ折りにし、その間に平線８と呼ばれる抜止め具を挟んで植毛穴７に打ち込むことによって、ヘッド部３の各植毛穴７に植設されている。   As shown in FIG. 2, the hair bundles 6A and 6B are formed by bundling a plurality of the above-described brushes 5 and folding them into two, and driving them into the flock holes 7 with a retainer called a flat wire 8 sandwiched between them. 3 is implanted in each flock hole 7.

平線８は、植毛穴７の中心部を通り、且つ、植毛穴７を跨ぐように植毛穴７に打設されている。平線８の材質としては、例えば、真鍮やステンレスなどの金属を挙げることができ、その他にも硬質プラスチックや生分解性プラスチッなどを挙げることができる。平線８は、その長さが植毛穴７の直径よりも大であり、その幅が植毛穴７の深さよりも小である。また、平線８の長さや幅、厚みについては、毛束６Ａ，６Ｂや植毛穴７に合わせて任意に調整すればよい。特に、平線８の厚みを調節することによって、毛束６Ａ，６Ｂを植毛穴７内に確実に固定して空隙を少なくすることができる。また、平線８は、植毛穴７からの抜けを防ぐため、植毛穴７の両側からはみ出した部分の長さの合計が０．３〜０．６ｍｍであることが好ましい。   The flat line 8 passes through the center of the flock hole 7 and is placed in the flock hole 7 so as to straddle the flock hole 7. Examples of the material of the flat wire 8 include metals such as brass and stainless steel, and other examples include hard plastics and biodegradable plastics. The flat wire 8 has a length larger than the diameter of the flocked hole 7 and a width smaller than the depth of the flocked hole 7. Further, the length, width, and thickness of the flat wire 8 may be arbitrarily adjusted according to the hair bundles 6A, 6B and the flock holes 7. In particular, by adjusting the thickness of the flat wire 8, the hair bundles 6 </ b> A and 6 </ b> B can be reliably fixed in the flock hole 7 and the gap can be reduced. Further, in order to prevent the flat wire 8 from coming off from the flocked hole 7, the total length of the portions protruding from both sides of the flocked hole 7 is preferably 0.3 to 0.6 mm.

ところで、本発明を適用した歯ブラシ１では、図１及び図２に示すように、先端径が異なるテーパー用毛５の毛束６Ａ，６Ｂがヘッド部３の植毛面３ａに植設されることによって、ヘッド部３の植毛面３ａに植設された毛束６Ａ，６Ｂの先端径に分布を持たせた構成となっている。   By the way, in the toothbrush 1 to which the present invention is applied, as shown in FIGS. 1 and 2, the bundles 6A and 6B of the taper bristles 5 having different tip diameters are implanted on the flocked surface 3a of the head portion 3. The hair bundles 6A and 6B planted on the hair planting surface 3a of the head portion 3 are distributed in the tip diameters.

具体的に、この歯ブラシ１を製造する際は、先ず、図３（ｂ）に示すように、平線８を挟んで二つ折りにされたテーパー用毛５を一端と他端との間で高低差ｔを設けて折り返す。そして、図４に示すように、ヘッド部３の植毛面３ａに設けられた植毛穴７に、平線８を挟んで二つ折りにされたテーパー用毛５の毛束６Ａ，６Ｂを、それぞれ一端（長毛側）６ａ，６ｃと他端（短毛側）６ｂ，６ｄとの間で高低差を設けて植設する。また、これら植毛穴７に植設される各毛束６Ａ，６Ｂの平線８の向きを所定の方向に設定する。   Specifically, when manufacturing the toothbrush 1, first, as shown in FIG. 3B, the taper bristles 5 that are folded in half with the flat wire 8 interposed therebetween are raised and lowered between one end and the other end. Fold it back with a difference t. Then, as shown in FIG. 4, the bristles 6A and 6B of the taper bristles 5 folded in half with the flat wire 8 sandwiched in the flocked hole 7 provided on the flocked surface 3a of the head portion 3 are respectively connected to one end. (Long hair side) 6a, 6c and other ends (short hair side) 6b, 6d are provided with a height difference and are planted. In addition, the direction of the flat wire 8 of each of the hair bundles 6A and 6B to be implanted in the flock hole 7 is set to a predetermined direction.

これにより、ヘッド部３の植毛面３ａでは、各毛束６Ａ，６Ｂの先端が全体として、図４に示すような立体的な起伏形状９を有することになる。すなわち、この起伏形状９は、植毛面３ａの中央部分にヘッド部３の長さ方向に並ぶ２つの頂部９ａを有しており、これら２つの頂部９ａから、その周囲の底部９ｂに向かって連続的に毛丈が低くなっている。   Thereby, in the hair transplantation surface 3a of the head part 3, the front-end | tip of each hair | bristle bundle 6A, 6B has the three-dimensional undulation shape 9 as shown in FIG. That is, the undulating shape 9 has two top portions 9a arranged in the length direction of the head portion 3 at the central portion of the flocked surface 3a, and is continuous from the two top portions 9a toward the surrounding bottom portion 9b. The hair length is low.

上記起伏形状９は、図５に示すように、頂部９ａと底部９ｂとの間で、高低差を設けた毛束６Ａ，６Ｂのうち、隣り合う一方の毛束６Ａの短毛側６ｂと、他方の毛束６Ｂの長毛側６ｃとを対向させて、他方の毛束６Ｂの長毛側６ｃの毛丈を一方の毛束６Ａの短毛側６ｂの毛丈と同じかそれよりも短くすることによって形成されている。すなわち、一方の毛束６Ａの長毛側６ａ及び短毛側６ｂの毛丈をｔａ，ｔｂ、他方の毛束６Ｂの長毛側６ｃ及び短毛側６ｄの毛丈をｔｃ，ｔｄとしたときに、ｔａ＞ｔｂ≧ｔｃ＞ｔｄの関係を満足している。 As shown in FIG. 5, the undulating shape 9 includes a short hair side 6 b of one of the adjacent hair bundles 6 </ b> A among the hair bundles 6 </ b> A and 6 </ b> B provided with a height difference between the top portion 9 a and the bottom portion 9 b. The long hair side 6c of the other hair bundle 6B is opposed to each other, and the length of the long hair side 6c of the other hair bundle 6B is made equal to or shorter than the hair length of the short hair side 6b of one hair bundle 6A. Is formed by. That is, the hair length a t a of long hair side 6a and the short hair side 6b of one of the bristle bundles 6A, t b, Woolly side 6c and hair length short hair side 6d t c of the other tuft 6B, and t d The relationship of t a > t b ≧ t c > t d is satisfied.

なお、本実施形態では、一方の毛束６Ａに毛丈が３１ｍｍのテーパー用毛、他方の毛束６Ｂに毛丈が２９ｍｍのテーパー用毛を用いて、それぞれ一端（長毛側）６ａ，６ｃと他端（短毛側）６ｂ，６ｄとの間で１ｍｍの高低差を設けて各植毛穴７に植設した。   In the present embodiment, one hair bundle 6A uses a taper hair having a hair length of 31 mm, and the other hair bundle 6B uses a taper hair having a hair length of 29 mm, and has one end (long hair side) 6a, 6c and A height difference of 1 mm was provided between the other end (short hair side) 6b, 6d, and each planted hole 7 was implanted.

これにより、起伏形状９の頂部９ａと底部９ｂとの間で連続的に毛束６Ａ，６Ｂの毛丈を異ならせることができ、ヘッド部３の植毛面３ａに設けられた各毛束６Ａ，６Ｂの先端は、全体として滑らかな起伏形状９を有することになる。   Thereby, the hair | bristle bundle 6A, 6B can be continuously varied in hair length between the top part 9a and the bottom part 9b of the undulation shape 9, and each hair | bristle bundle 6A provided in the flocked surface 3a of the head part 3 can be different. The tip of 6B has a smooth relief shape 9 as a whole.

また、上記起伏形状９は、図２に示すように、２つの頂部９ａの中心Ｓに対して、その周囲を囲む複数（４つ）の毛束６Ａによって構成される第１の毛束群１０Ａと、更に第１の毛束群１０Ａの周囲を囲む複数（１１つ）の毛束６Ｂによって構成される第２の毛束群１０Ｂとから形成されている。なお、図２では、植毛面３ａに設けられた複数の植毛穴７のうち、各毛束６Ａ，６Ｂの平線８を挟んだ一方側（長毛側）６ａ，６ｃと他方側（短毛側）６ｂ，６ｄとを色分けにより区別して示すものとする。   In addition, as shown in FIG. 2, the undulating shape 9 has a first hair bundle group 10A constituted by a plurality (four) of hair bundles 6A surrounding the center S of the two top portions 9a. And a second hair bundle group 10B constituted by a plurality (11) of hair bundles 6B surrounding the periphery of the first hair bundle group 10A. In FIG. 2, among the plurality of flocked holes 7 provided on the flocked surface 3a, one side (long hair side) 6a, 6c and the other side (short hair side) sandwiching the flat wire 8 of each hair bundle 6A, 6B. ) 6b and 6d are distinguished by color coding.

そして、これら第１及び第２の毛束群１０Ａ，１０Ｂを構成する各毛束６Ａ，６Ｂの平線８の向きは、それぞれの平線８の延長線によって１つの囲み領域を区画する方向に設定され、且つ、囲み領域の内側には、各毛束６の長毛側６ａ，６ｃのみが位置している。さらに、各毛束６Ａ，６Ｂの平線８の向き（打込み角度）は、頂部９ａの中心Ｓと当該毛束６Ａ，６Ｂとを結ぶ直線に対して略直交する方向（９０゜）に設定されている。   And the direction of the flat line 8 of each hair bundle 6A, 6B which comprises these 1st and 2nd hair bundle groups 10A, 10B is the direction which divides one enclosure area | region by the extended line of each flat line 8. Only the long hair sides 6a and 6c of each hair bundle 6 are located inside the enclosed region. Furthermore, the direction (drive angle) of the flat wire 8 of each hair bundle 6A, 6B is set in a direction (90 °) substantially orthogonal to the straight line connecting the center S of the top portion 9a and the hair bundle 6A, 6B. ing.

これにより、ヘッド部３の植毛面３ａに設けられた各毛束６Ａ，６Ｂの先端は、上記２つの頂部９ａから、その周囲の底部９ｂに向かって連続的に毛丈が低くなる起伏形状９を有することになる。   As a result, the tips of the hair bundles 6A and 6B provided on the flocked surface 3a of the head portion 3 are undulated shapes 9 in which the hair height continuously decreases from the two top portions 9a toward the bottom portion 9b around the tops 9a. Will have.

次に、ヘッド部３の植毛面３ａに設けられた各毛束６Ａ，６Ｂの先端を剪定する。具体的には、図４及び図５中に示すカット線Ｃに沿って、各毛束６Ａ，６Ｂの先端を、いわゆる平切りによって平らに切り揃える。これにより、ヘッド部３の植毛面３ａに設けられた各毛束６Ａ，６Ｂの先端は、図１（ｂ）に拡大して示すように、一方の毛束６Ａの一端６ａと他端６ｂ、他方の毛束６Ｂの一端６ｃと他端６ｄの順で、その先端径が順に細くなる分布を示し、上記図２に示す２つの中心Ｓから同心円状に毛束６Ａ，６Ｂの先端径が連続的に細くなる分布を示すことになる。   Next, the tips of the hair bundles 6 </ b> A and 6 </ b> B provided on the flocked surface 3 a of the head portion 3 are pruned. Specifically, along the cut line C shown in FIGS. 4 and 5, the tips of the hair bundles 6A and 6B are cut flat by so-called flat cutting. As a result, the ends of the hair bundles 6A and 6B provided on the hair transplantation surface 3a of the head portion 3 are enlarged as shown in FIG. 1 (b), with one end 6a and the other end 6b of one hair bundle 6A, The distribution is such that the tip diameter of the other hair bundle 6B becomes smaller in the order of one end 6c and the other end 6d, and the tip diameters of the hair bundles 6A and 6B are concentrically formed from the two centers S shown in FIG. Will show a narrowing distribution.

すなわち、ヘッド部３の植毛面３ａに設けられた各毛束６Ａ，６Ｂは、上記起伏形状９を有する先端が平らに切り揃えられることによって、各毛束６Ａ，６Ｂを構成するテーパー用毛５の毛丈が高いほど、剪定された毛先５ａの先端径が太くなる。したがって、この歯ブラシ１では、上記起伏形状９の２つの頂部９ａから、その周囲の底部９ｂに向かって連続的に毛丈が低くなるのに対応して、剪定後は各毛束６Ａ，６Ｂの先端径が連続的に細くなる分布を示すことになる。   That is, each of the hair bundles 6A and 6B provided on the flocked surface 3a of the head portion 3 has a tapered hair 5 that constitutes each of the hair bundles 6A and 6B by cutting the tips having the undulating shape 9 flat. The higher the hair length, the thicker the tip diameter of the pruned hair tip 5a. Therefore, in this toothbrush 1, after the pruning, the bristles 6A and 6B have the bristles 6A and 6B after the pruning, corresponding to the continuous reduction of the bristle length from the two tops 9a of the undulating shape 9 toward the bottom 9b. This indicates a distribution in which the tip diameter is continuously reduced.

以上のような構造を有する歯ブラシ１では、ヘッド部３の植毛面３ａに設けられた各毛束６Ａ，６Ｂが、上記図２に示す２つの中心Ｓに向かって先端径が太くなるため、これら２つの中心部分では毛腰を強くすることができる。一方、この歯ブラシ１では、２つの中心部分から外側に向かって同心円状に先端径が細くなるため、これらの周辺部分では毛腰を柔らかくすることができる。   In the toothbrush 1 having the above-described structure, since each of the hair bundles 6A and 6B provided on the flocked surface 3a of the head portion 3 becomes thicker toward the two centers S shown in FIG. In the two central portions, the hair can be strengthened. On the other hand, in this toothbrush 1, since the tip diameter becomes concentrically concentrically outward from the two central portions, the fluff can be softened in these peripheral portions.

したがって、この歯ブラシ１では、歯面などの平滑面を磨く際に、毛腰の強い２つの中心部分が歯面に接触することによって、高い刷掃実感を得ると共に、歯垢除去力の向上を図ることが可能である。一方、この歯ブラシ１では、毛腰の柔らかい周辺部分が歯頸部に主に接触するため、歯茎を傷付けることなく歯頸部の刷掃を行うことが可能である。さらに、周辺部分は毛先が細いため、歯周ポケットなどの狭い箇所に対する毛先進入性を高めることが可能である。したがって、この歯ブラシ１では、高い清掃実感が得られると共に、歯間部や歯茎部などの毛先進入性が悪くなる箇所に対する清掃性を十分に確保することが可能である。   Therefore, in this toothbrush 1, when polishing a smooth surface such as a tooth surface, the two central portions having strong bristles come into contact with the tooth surface, so that a high brushing feeling is obtained and the plaque removal power is improved. It is possible to plan. On the other hand, in this toothbrush 1, since the soft peripheral part of the fluff is mainly in contact with the tooth neck, the tooth neck can be cleaned without damaging the gums. Furthermore, since the hair tip is thin in the peripheral portion, it is possible to improve the hair tip entry property for narrow places such as periodontal pockets. Therefore, in this toothbrush 1, while being able to obtain a high cleaning feeling, it is possible to sufficiently ensure the cleanability of a portion where the tip entry property such as an interdental portion or a gum portion is deteriorated.

以上のように、本発明を適用した歯ブラシ１では、ヘッド部３の植毛面３ａに植設された毛束６Ａ，６Ｂの先端径に分布を持たせることで、特別な毛切り形状に因らずに、また、複雑な毛束配列や複数の用毛種を必要とせずに、機能性や使用感において容易に差別化を図ることが可能である。   As described above, in the toothbrush 1 to which the present invention is applied, the distribution of the tip diameters of the hair bundles 6A and 6B planted on the hair planting surface 3a of the head portion 3 is caused by a special hair cutting shape. In addition, it is possible to easily differentiate in functionality and feeling of use without requiring a complicated hair bundle arrangement and a plurality of hair types.

すなわち、従来の歯ブラシでは、上述した機能性や使用性を得るために、植毛穴毎に先端径の異なるテーパー用毛を植設する必要があるため、各毛束の境界が明確になり易くなる。これに対して、本発明を適用した歯ブラシ１では、平線８を挟んで二つ折りにされた毛束６Ａ，６Ｂを半毛束単位で先端径の異なる仕様とすることができるため、従来よりも毛束６Ａ，６Ｂの先端径を連続してなだらかに変化させることが可能である。例えば、本実施形態では、上記テーパー用毛５の毛丈を順に異ならせた２種類の毛束６Ａ，６Ｂから、半毛束単位で４種類の先端径を有する毛束６Ａ，６Ｂを得たことになるため、従来にはない繊細で上質な当たり心地を得ることが可能である。   That is, in the conventional toothbrush, in order to obtain the above-described functionality and usability, it is necessary to implant taper hairs having different tip diameters for each flock hole, so that the boundary between each hair bundle is easily clarified. . On the other hand, in the toothbrush 1 to which the present invention is applied, since the bristles 6A and 6B folded in half across the flat wire 8 can be made to have different specifications of the tip diameter in units of half bristles, It is possible to continuously and gently change the tip diameters of the hair bundles 6A and 6B. For example, in the present embodiment, hair bundles 6A and 6B having four types of tip diameters in units of half hair bundles are obtained from two kinds of hair bundles 6A and 6B in which the hair lengths of the taper hairs 5 are sequentially changed. Therefore, it is possible to obtain a delicate and high-quality hit feeling that has not existed before.

また、本発明では、植毛穴毎に先端径の異なるテーパー用毛を植設したり、複雑な毛切り形状を取り入れたりする必要がなく、また、植毛穴を比較的単純な配列とすることができるため、シンプルな外観を維持したまま、機能の差別化を図ることが可能であり、そのような設計自由度の高い歯ブラシ１を安価に製造することが可能である。   Further, in the present invention, there is no need to plant a taper hair having a different tip diameter for each flock hole or to incorporate a complicated hair cutting shape, and the flock holes can be arranged in a relatively simple arrangement. Therefore, it is possible to differentiate the functions while maintaining a simple appearance, and it is possible to manufacture such a toothbrush 1 having a high degree of design freedom at low cost.

なお、本発明は、上記歯ブラシ１の構成に必ずしも限定されるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。なお、以下の説明では、上記歯ブラシ１と同等の部位については、説明を省略すると共に、便宜上同じ符号を付すものとする。   In addition, this invention is not necessarily limited to the structure of the said toothbrush 1, A various change can be added in the range which does not deviate from the meaning of this invention. In addition, in the following description, about the site | part equivalent to the said toothbrush 1, while omitting description, the same code | symbol shall be attached | subjected for convenience.

上記歯ブラシ１では、ヘッド部３の植毛面３ａに植設された毛束６ａ，６ｂの先端径を異ならせる際に、上記図３に示す起伏形状９に限定されるものではなく、その頂部９ａや底部９ｂの配置や数等については任意に変更することができる。また、頂部９ａと底部９ｂとの間の起伏形状（プロファイル）も自由に設定することができ、例えば山切り状やドーム状、球面状などの起伏形状を、テーパー用毛５の毛先形状を維持したまま自由に設計することができる。   The toothbrush 1 is not limited to the undulating shape 9 shown in FIG. 3 when the tip diameters of the hair bundles 6a and 6b planted on the hair-planting surface 3a of the head portion 3 are different from each other. In addition, the arrangement and number of the bottom portions 9b can be arbitrarily changed. Further, the undulation shape (profile) between the top portion 9a and the bottom portion 9b can be freely set. For example, the undulation shape such as a mountain shape, a dome shape, or a spherical shape is used, and the tip shape of the taper hair 5 is changed. You can design freely while maintaining.

すなわち、本発明では、テーパー用毛５の毛束６Ａ，６Ｂを二つ折りにし、その間に挟み込まれた平線８を植毛穴７に打ち込む際に、各毛束６Ａ，６Ｂにおける長毛側６ａ，６ｃと短毛側６ｂ，６ｄとの高低差、毛束群１０Ａ，１０Ｂを構成する毛束６Ａ，６Ｂの配置や数、並びに、毛束６Ａ，６Ｂの平線８の向き（打込み角度）などを自由に設定することができ、これらを組み合わせることによって、従来のような剪定による毛切り形状や、毛束単位で高低差を設けるといった方法によらずに、設計自由度の高い起伏形状を毛束６Ａ，６Ｂの先端に付与することができ、しかも製造が容易である。   That is, in the present invention, when the bristles 6A and 6B of the taper bristles 5 are folded in half and the flat wire 8 sandwiched therebetween is driven into the flock hole 7, the long hair sides 6a and 6c in the bristles 6A and 6B are respectively And the short hair sides 6b and 6d, the arrangement and number of the hair bundles 6A and 6B constituting the hair bundle groups 10A and 10B, the direction of the flat wires 8 of the hair bundles 6A and 6B (the driving angle), etc. They can be set freely, and by combining these, a hair bundle with a high degree of freedom in design can be obtained without using the conventional pruning shape by pruning or the method of providing a height difference in units of hair bundles. It can be applied to the tips of 6A and 6B and is easy to manufacture.

例えば、上記歯ブラシ１では、ヘッド部３の植毛面３ａに植設された毛束６Ａ，６Ｂの先端に、図６に示すような立体的な起伏形状９Ａを付与することも可能である。具体的に、この起伏形状９Ａでは、植毛面３ａの中央部分にヘッド部３の長さ方向に並ぶ２つの底部９ｂを有しており、これら２つの底部９ｂから、その周囲の頂部９ａに向かって連続的に毛丈が低くなっている。   For example, in the toothbrush 1, a three-dimensional relief shape 9 </ b> A as shown in FIG. 6 can be imparted to the tips of the hair bundles 6 </ b> A and 6 </ b> B planted on the hair planting surface 3 a of the head portion 3. Specifically, the undulating shape 9A has two bottom portions 9b arranged in the length direction of the head portion 3 at the central portion of the flocked surface 3a, and from these two bottom portions 9b toward the surrounding top portion 9a. The hair length is continuously low.

この場合、図６中に示すカット線Ｃに沿って、各毛束６Ａ，６Ｂの先端を平切りによって平らに切り揃えることにより、ヘッド部３の植毛面３ａに設けられた各毛束６Ａ，６Ｂの先端は、上記起伏形状９Ａの２つの底部９ｂから、その周囲の頂部９ａに向かって連続的に毛丈が高くなるのに対応して、剪定後は各毛束６Ａ，６Ｂの先端径が連続的に太くなる分布を示すことになる。   In this case, along the cut line C shown in FIG. 6, each hair bundle 6A, 6B provided on the hair transplantation surface 3a of the head portion 3 by cutting the tips of the hair bundles 6A, 6B flatly by flat cutting. The tips of 6B correspond to the continuous increase in hair length from the two bottom portions 9b of the undulating shape 9A toward the surrounding top portion 9a, and after the pruning, the tip diameters of the respective hair bundles 6A and 6B Indicates a distribution of continuously thickening.

したがって、この場合は、２つの中心部分において毛束６Ａ，６Ｂを撓み易くし、これらの周辺部分では毛束６Ａ，６Ｂの毛腰を高めることができる。これによって、例えば奥歯頬側部の大きな凸部を磨く際に、上記２つの中心部分において毛束６Ａ，６Ｂが適度に沈み込むことになり、歯牙へのフィット性や清掃性を高めることが可能である。   Therefore, in this case, the hair bundles 6A and 6B can be easily bent at the two central portions, and the bristles of the hair bundles 6A and 6B can be increased at these peripheral portions. As a result, for example, when brushing the large convex part on the cheek side of the back tooth, the hair bundles 6A and 6B are appropriately submerged in the two central parts, and it is possible to improve the fit and cleaning properties to the teeth. It is.

なお、本発明では、上記毛束群１０Ａ，１０Ｂの毛束６Ａ，６Ｂによって区画される囲み領域の内側に、各毛束６Ａ，６Ｂの長毛側６ａ，６ｃを配置した構成に限らず、短毛側６ｂ，６ｄを配置した構成とすることも可能である。この場合、毛束６Ａ，６Ｂの先端を平らに切り揃えることによって、囲み領域の内側に向かって毛束６Ａ，６Ｂの先端径が順に小さくなる分布を持たせることが可能である。   The present invention is not limited to the configuration in which the long hair sides 6a and 6c of the respective hair bundles 6A and 6B are arranged inside the enclosed region partitioned by the hair bundles 6A and 6B of the hair bundle groups 10A and 10B. It is also possible to adopt a configuration in which the hair sides 6b and 6d are arranged. In this case, it is possible to have a distribution in which the tip diameters of the hair bundles 6A and 6B decrease in order toward the inside of the enclosed region by cutting the tips of the hair bundles 6A and 6B flatly.

また、本発明では、上記ヘッド部３の植毛面３ａに設けられた植毛穴７の全てに上記高低差を設けた毛束６Ａ，６Ｂを植設する場合に限らず、上記高低差を設けた毛束６Ａ，６Ｂを一部の植毛穴７に植設した構成とすることもできる。すなわち、本発明では、上述した起伏形状９の設計に合わせて、上記高低差を設けた毛束６Ａ，６Ｂと共に、平線８を挟んだ一方側と他方側の毛丈が同じ毛束等を任意に組み合わせて用いることが可能である。   In the present invention, the height difference is not limited to the case where the hair bundles 6A and 6B having the height difference are implanted in all the flock holes 7 provided on the flocking surface 3a of the head portion 3. It can also be set as the structure which planted the hair | bristle bundles 6A and 6B in some flocking holes 7. FIG. That is, in the present invention, in accordance with the design of the undulating shape 9 described above, together with the hair bundles 6A and 6B provided with the above-mentioned height difference, a hair bundle having the same length on one side and the other side across the flat wire 8 is provided. Any combination can be used.

なお、各毛束６Ａ，６Ｂの長毛側６ａ，６ｃ及び短毛側６ｂ，６ｄの毛丈を異ならせる場合には、上述したテーパー用毛５の長さを変更したり、平線８を挟んで二つ折りにされたテーパー用毛５の折返し位置を変更したりすればよい。また、本発明では、使用感や、刷掃感、清掃効果、耐久性など考慮して、太さやテーパー角の異なるテーパー用毛５を任意に組み合わせて用いてもよい。   When the lengths of the long hair sides 6a and 6c and the short hair sides 6b and 6d of the hair bundles 6A and 6B are made different, the length of the above-described taper hair 5 is changed, or the flat wire 8 is sandwiched. The folding position of the taper bristles 5 folded in half may be changed. In the present invention, the taper hairs 5 having different thicknesses and taper angles may be used in any combination in consideration of a feeling of use, a feeling of cleaning, a cleaning effect, and durability.

また、上記毛束群１０Ａ，１０Ｂを構成する各毛束６Ａ，６Ｂのうち、隣接する毛束６Ａ，６Ｂが植設された植毛穴７の間隔（植毛穴間の最内距離）は、ヘッド部３の強度を確保できる範囲で小さくすることが好ましく、具体的には０．６〜１．０ｍｍの範囲とすることが好ましい。この間隔が０．６ｍｍ未満であると、ヘッド部３の強度を確保することが困難となる一方、この間隔が１．０ｍｍを超えると、毛束群１０Ａ，１０Ｂを構成する各毛束６Ａ，６Ｂ間の間隔が広くなり過ぎてしまい、上述した起伏形状９を滑らかに形成することが困難となる。   Further, among the hair bundles 6A and 6B constituting the hair bundle groups 10A and 10B, the distance between the flock holes 7 in which the adjacent hair bundles 6A and 6B are implanted (the innermost distance between the flock holes) is the head. It is preferable to make it small in the range which can ensure the intensity | strength of the part 3, and it is preferable to set it as the range of 0.6-1.0 mm specifically. When this interval is less than 0.6 mm, it is difficult to ensure the strength of the head portion 3, while when this interval exceeds 1.0 mm, each of the hair bundles 6 </ b> A, 10 </ b> B constituting the hair bundle group 10 </ b> A, 10 </ b> B. The interval between 6B becomes too wide, and it becomes difficult to smoothly form the undulating shape 9 described above.

また、植毛穴７の直径は、１．０ｍｍ以上であることが好ましい。植毛穴７の直径が１．０ｍｍ未満であると、高低差を設けた毛束６Ａ，６Ｂの長毛側６ａ，６ｃの毛腰が弱くなり、清掃実感が低下することになる。一方、植毛穴７の直径の上限については、使用感や、ヘッド部３の強度などの品質を担保し、且つ所望の起伏形状９を形成できれば、特に限定する必要はない。また、植毛穴７の深さは、２．７〜４．３ｍｍであることが好ましい。植毛穴７の深さが２．７ｍｍ未満であると、平線８や毛束６Ａ，６Ｂが抜けやすくなる。一方、植毛穴７の深さが４．３ｍｍを超えると、ヘッド部３が厚くなり過ぎて、歯ブラシ１の操作性が低下することになる。   Moreover, it is preferable that the diameter of the flock hole 7 is 1.0 mm or more. If the diameter of the flock hole 7 is less than 1.0 mm, the hair on the long hair sides 6a and 6c of the hair bundles 6A and 6B provided with the height difference becomes weak, and the cleaning feeling is lowered. On the other hand, the upper limit of the diameter of the flocking hole 7 is not particularly limited as long as the feeling of use, the quality of the head portion 3 and the like are ensured and the desired undulating shape 9 can be formed. Moreover, it is preferable that the depth of the flock hole 7 is 2.7-4.3 mm. When the depth of the flock hole 7 is less than 2.7 mm, the flat wire 8 and the hair bundles 6A and 6B are easily removed. On the other hand, if the depth of the flock hole 7 exceeds 4.3 mm, the head portion 3 becomes too thick and the operability of the toothbrush 1 is lowered.

各毛束６Ａ，６Ｂを構成するテーパー用毛５の剪定後の先端径は、１０〜２２０μｍの範囲で異ならせることが好ましい。先端径が１０μｍ未満になると、毛先の腰が弱くなり過ぎて掻き取り力が低下することになる。一方、先端径が２２０μｍを超えると、毛先の毛腰が強くなり過ぎて当たり心地が悪くなる。   It is preferable to vary the tip diameters after the pruning of the taper bristles 5 constituting each hair bundle 6A, 6B within a range of 10 to 220 μm. When the tip diameter is less than 10 μm, the waist of the hair tip becomes too weak and the scraping force is reduced. On the other hand, if the tip diameter exceeds 220 μm, the fluff of the hair ends becomes too strong and the contact feeling becomes worse.

また、テーパー用毛５の横断面形状は、好ましくは円形であるが、そのような形状に必ずしも限定されるものではなく、例えば、楕円形、多角形（例えば、三角形、四角形、五角形、六角形など。）異形（例えば、星形、三つ葉のクローバー形、四つ葉のクローバー形など。）等とすることができ、歯ブラシ１の目的用途に応じて任意の形状とすることができる。さらに、テーパー用毛５は、スパイラル状にしたり、エンボス等を設けたりしてもよい。   The cross-sectional shape of the taper bristles 5 is preferably circular, but is not necessarily limited to such a shape. For example, an elliptical shape, a polygonal shape (for example, a triangle, a quadrangle, a pentagon, a hexagon) Etc.) It is possible to use an irregular shape (for example, a star shape, a three-leaf clover shape, a four-leaf clover shape, etc.), etc., and it can have any shape according to the intended use of the toothbrush 1. Further, the taper bristles 5 may be formed in a spiral shape or provided with embossing or the like.

また、各毛束６Ａ，６Ｂは、通常は複数本のテーパー用毛５を略円形状に束ねたものを用いるが、このような略円形状に束ねたものに限らず、略三角形や略四角形などの略多角形状に束ねてもよく、さらに、略楕円状や、略長円状、略長方形状、略多角形状など長径と短径が異なる形状に束ねたものを用いてもよい。   Each of the hair bundles 6A and 6B is usually a bundle of a plurality of taper hairs 5 bundled in a substantially circular shape, but is not limited to such a bundle of substantially circular shapes, and is substantially triangular or substantially rectangular. Further, it may be bundled in a substantially polygonal shape such as a substantially elliptical shape, a substantially oval shape, a substantially rectangular shape, or a substantially polygonal shape, and may be bundled in a shape having a different major axis and minor axis.

また、ヘッド部３の植毛面３ａには、通常はヘッド部３の長さ方向や幅方向において、円形の植毛穴７が格子状や千鳥状に所定の間隔で複数並んで配置されるが、植毛穴７の配置や間隔、それらの組み合わせ等については、特に限定されるものではなく、歯ブラシ１の目的用途に応じて任意に変更することができる。   In addition, a plurality of circular flocking holes 7 are usually arranged in a lattice shape or a staggered pattern on the flocking surface 3a of the head portion 3 in the length direction or the width direction of the head portion 3, The arrangement and interval of the flock holes 7 and the combination thereof are not particularly limited, and can be arbitrarily changed according to the intended use of the toothbrush 1.

また、植毛穴７の横断面形状は、上記テーパー用毛５を束ねた毛束６Ａ，６Ｂの形状に合わせて通常は円形であるが、そのような形状に限定されるものではなく、上記テーパー用毛５を束ねた毛束６Ａ，６Ｂの形状に合わせて任意の形状とすることができる。   Further, the cross-sectional shape of the flock hole 7 is usually circular in accordance with the shape of the hair bundles 6A and 6B obtained by bundling the taper hairs 5, but is not limited to such a shape, and the taper It can be made into arbitrary shapes according to the shape of the hair bundles 6A and 6B in which the bristles 5 are bundled.

なお、本発明は、上記歯ブラシ１に適用したものに限らず、電気的に駆動される電動歯ブラシやその取替用ブラシなどにも適用可能である。また、本発明は、上記歯ブラシ１のような口腔用のブラシに限らず、ヘッド部の植毛面に複数の毛束が植設されてなるブラシに対して幅広く適用することが可能である。   In addition, this invention is applicable not only to what was applied to the said toothbrush 1, but the electrically driven electric toothbrush, its replacement brush, etc. Further, the present invention is not limited to the oral brush such as the toothbrush 1, and can be widely applied to a brush in which a plurality of hair bundles are implanted on the flocked surface of the head portion.

１…歯ブラシ １Ａ…ブラシハンドル ２…ハンドル部 ３…ヘッド部 ３ａ…植毛面 ４…ネック部 ５…テーパー用毛 ６Ａ…一方の毛束 ６Ｂ…他方の毛束 ６ａ，６ｃ…長毛側 ６ｂ，６ｄ…短毛側 ７…植毛穴 ８…平線 ９…起伏形状 ９ａ…頂部 ９ｂ…底部 １０Ａ…第１の毛束群 １０Ｂ…第２の毛束群   DESCRIPTION OF SYMBOLS 1 ... Toothbrush 1A ... Brush handle 2 ... Handle part 3 ... Head part 3a ... Flocking surface 4 ... Neck part 5 ... Taper hair 6A ... One hair bundle 6B ... The other hair bundle 6a, 6c ... Long hair side 6b, 6d ... Short hair side 7 ... Planted hole 8 ... Flat wire 9 ... Uneven shape 9a ... Top 9b ... Bottom 10A ... First hair bundle group 10B ... Second hair bundle group

Claims (4)

ヘッド部の植毛面に設けられた複数の植毛穴に、平線を挟んで二つ折りにされた複数の毛束が植設されてなり、前記毛束は、毛先に向かって漸次径が細くなるテーパー用毛を含み、且つ、先端径が異なるテーパー用毛の毛束が前記ヘッド部の植毛面に植設されることによって、前記ヘッド部の植毛面に植設された毛束の先端径に分布を持たせた歯ブラシであって、
前記テーパー用毛の毛束を一端と他端との間で高低差を設けて植設した後に、前記毛束の先端を平らに剪定することによって、前記毛束の先端径を異ならせてなることを特徴とする歯ブラシ。 A plurality of bristles holes provided in bristle face of the head portion, Ri Na plurality of tuft that has been folded in two to sandwich the Tairasen is implanted, the tufts are progressively diameter toward the hair tips The tip of the hair bundle planted on the flocked surface of the head part by having the bristles of the taper hair having a taper hair that becomes thinner and having a different tip diameter planted on the flocked surface of the head part Toothbrush with distribution in diameter ,
After the hair bundle of the taper hair is planted with a height difference between one end and the other end, the tip diameter of the hair bundle is made different by pruning the tip of the hair bundle flatly. A toothbrush characterized by that. 前記高低差を設けた毛束のうち、隣り合う一方の毛束の短毛側と、他方の毛束の長毛側とを対向させて、前記他方の毛束の長毛側の毛丈を前記一方の毛束の短毛側の毛丈と同じかそれよりも短くすると共に、前記毛束の先端を平らに切り揃えることによって、前記一方の毛束から前記他方の毛束に向かって前記毛束の先端径が順に小さくなる分布を持たせ
たことを特徴とする請求項１に記載の歯ブラシ。 Among the hair bundles provided with the height difference, the short hair side of one of the adjacent hair bundles is opposed to the long hair side of the other hair bundle, and the length of the long hair side of the other hair bundle is set to the one side. The length of the hair bundle is equal to or shorter than the length of the short hair side of the hair bundle, and the tip of the hair bundle is trimmed flatly, thereby moving the hair bundle from the one hair bundle toward the other hair bundle. The toothbrush according to claim 1 , wherein the toothbrush has a distribution in which the tip diameter of the tooth becomes gradually smaller. 前記ヘッド部の植毛面に、少なくとも３つ以上の前記高低差を設けた毛束によって構成される毛束群が設けられ、
前記毛束群を構成する各毛束の平線の向きは、それぞれの平線の延長線によって１つの囲み領域を区画する方向に設定され、且つ、前記囲み領域の内側には、各毛束の長毛側又は短毛側の何れか一方が配置されると共に、前記毛束の先端を平らに切り揃えることによって、前記囲み領域の内側に向かって前記毛束の先端径が順に大きくなる又は小さくなる分布を持たせたことを特徴とする請求項１又は２に記載の歯ブラシ。 On the flocked surface of the head part, a hair bundle group constituted by at least three or more hair bundles provided with the height difference is provided,
The direction of the flat line of each hair bundle constituting the hair bundle group is set in a direction in which one enclosed area is defined by an extension of each flat line, and each hair bundle is placed inside the enclosed area. Either the long hair side or the short hair side of the hair bundle is arranged, and the tip diameter of the hair bundle is increased or decreased in order toward the inside of the enclosed region by cutting the tips of the hair bundle flatly. The toothbrush according to claim 1 or 2 , characterized by having a distribution as follows. 請求項１〜３のいずれか１項に記載の歯ブラシの製造方法であって、
毛先に向かって漸次径が細くなるテーパー用毛の毛束を用いて、前記ヘッド部の植毛面に設けられた複数の植毛穴に、平線を挟んで二つ折りにされた前記テーパー用毛の毛束を一端と他端との間で高低差を設けて植設した後に、前記毛束の先端を平らに剪定し、前記ヘッド部の植毛面に植設された毛束の先端径を異ならせることを特徴とする歯ブラシの製造方法。 It is a manufacturing method of the toothbrush of any one of Claims 1-3 ,
The taper bristles are folded in half with a flat wire in a plurality of flock holes provided on the flock surface of the head portion using a bristles of taper bristles whose diameter gradually decreases toward the bristles. After the hair bundle is planted with a height difference between one end and the other end, the tip of the hair bundle is pruned flatly, and the tip diameter of the hair bundle planted on the hair-planting surface of the head portion is set. A method of manufacturing a toothbrush, characterized by differentiating.
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JP2010246756A (en) 2010-11-04
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CN102395295B (en) 2014-04-09
WO2010119688A1 (en) 2010-10-21
KR20120006490A (en) 2012-01-18

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