JP2005160498A - Electric toothbrush - Google Patents

Electric toothbrush Download PDF

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JP2005160498A
JP2005160498A JP2003399429A JP2003399429A JP2005160498A JP 2005160498 A JP2005160498 A JP 2005160498A JP 2003399429 A JP2003399429 A JP 2003399429A JP 2003399429 A JP2003399429 A JP 2003399429A JP 2005160498 A JP2005160498 A JP 2005160498A
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brush
bristle
hair
electric toothbrush
implanted
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Sachiko Nakayama
幸子 中山
Kazutoshi Endo
和俊 遠藤
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Lion Corp
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Lion Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric toothbrush of a high quality, which provides a high operability in the oral cavity, an excellent brushing feeling, and in addition, a high tooth-brushing effect. <P>SOLUTION: The overall thickness (a) of a head section 7 including a brush section 2 is set to be 1.2 to 1.7 cm, and the ratio (c/b) of the thickness (b) of the head section 7 without including the brush section 2 and a maximum brush length (c) is set to be 0.9 to 1.5, and at the same time, a bristle cross sectional area is set to be 0.75 to 1.6 mm<SP>2</SP>. Also, a plurality of bristle bundles 12 constituting the brush section 2 are concentrically implanted in the circumference. At the same time, the bristle implanted area is set to be 0.6 to 1.6 cm<SP>2</SP>, and the bristle implanted density is set to be 25 to 35%. The bristle length of the bristle bundle 12 which is implanted in the outermost periphery is made longer than the bristle length of the bristle bundle 12 which is implanted in the innermost periphery. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

発明は、口腔内操作性に優れた高品質な電動歯ブラシに関するものである。   The present invention relates to a high-quality electric toothbrush excellent in intraoral operability.

従来より、電動歯ブラシは駆動方式や刷掃速度などの機能面について種々の研究がなされてきた。特に、近年においては、略円形の植毛部が連続反転運動をする電動歯ブラシについて様々な検討が行なわれている。しかし、連続反転運動をする電動歯ブラシは、刷毛が植設されている植毛台に反転運動機構が付加されているため、従来の手用歯ブラシと比較すると植毛部が厚くなってしまっていた。このように植毛部が厚いと、口腔内での操作性が悪くなり、奥歯の奥などに毛先が届きにくくなる。この問題を解決するために、植設された刷毛の毛丈を短くし、植毛部全体の厚みを抑えることもできるが、毛丈の短すぎる刷毛はたわみにくく、磨き心地が悪くなったり、歯グキを傷めてしまったりするという問題があった。   Conventionally, various studies have been made on the functional aspects of the electric toothbrush such as the driving method and the brushing speed. In particular, in recent years, various studies have been conducted on electric toothbrushes in which a substantially circular flocked portion performs a continuous reversal motion. However, since the electric toothbrush that performs continuous reversal motion has a reversal motion mechanism added to the flocking table in which the brush is implanted, the flocked portion has become thicker than a conventional hand toothbrush. Thus, when the hair transplant part is thick, the operability in the oral cavity is deteriorated, and the hair tip is difficult to reach the back of the back teeth. To solve this problem, it is possible to shorten the hair length of the implanted brush and reduce the thickness of the entire hair transplanted part, but brushes with too short hair length are difficult to bend and make it difficult to brush, There was a problem of hurting the kid.

以下に、従来の電動歯ブラシの例を示す。
(1)特許文献1(特表平11−508168号公報)
毛束が同心円状に複数周植毛された電動歯ブラシにおいて、外部リングを異なる長さの毛束で構成した電動歯ブラシが示されている。
Below, the example of the conventional electric toothbrush is shown.
(1) Patent Document 1 (Japanese Patent Publication No. 11-508168)
In an electric toothbrush in which a plurality of concentric bristle bristles are implanted, the electric toothbrush in which the outer ring is composed of bristles of different lengths is shown.

(2)特許文献2(特表2000−507489号公報)
植毛台面に対し、連続して傾斜した2個の包絡面により略V字条をした傾斜面からなる剛毛域を備えた電動歯ブラシが示されている。
(2) Patent Document 2 (Japanese Patent Publication No. 2000-507489)
The electric toothbrush provided with the bristle region which consists of the inclined surface which carried out the substantially V shape with the two envelope surfaces inclined continuously with respect to the flocked table surface is shown.

特表平11−508168号公報(全頁、全図)No. 11-508168 (all pages, all figures) 特表2000−507489号公報(全頁、全図)Special Table 2000-50789 (all pages, all figures)

上述した従来の電動歯ブラシの場合、次のような問題があった。
1.これまでの反転式電動歯ブラシは植毛部が厚く、口腔内での操作性が良くなかった。
2.植毛部を薄くするために刷毛の毛丈を短くすると、毛腰が強くなり、磨き心地が悪く、歯グキを痛めやすい歯ブラシとなってしまう。
The conventional electric toothbrush described above has the following problems.
1. Conventional reversible electric toothbrushes have thick flocked parts, and their operability in the oral cavity is not good.
2. If the length of the brush is shortened in order to make the flocked portion thinner, the fur becomes stronger, the brushing feeling is poor, and the toothbrush is likely to be damaged.

本発明は、上記問題を解決するためになされたもので、口腔内における操作性がよく、磨き心地に優れ、しかも刷掃効果の高い高品質な電動歯ブラシを提供することを目的とするものである。   The present invention has been made in order to solve the above-described problems, and has an object to provide a high-quality electric toothbrush having good operability in the oral cavity, excellent polishing comfort, and high brushing effect. is there.

上記課題を解決するため、請求項1の電動歯ブラシは、刷毛部を含むヘッド部全体の厚み(a)を1.2〜1.7cmとし、刷毛部を含まないヘッド部の厚み(b)と最大刷毛長(c)との比(c/b)を0.9〜1.5とするとともに、毛束断面積を0.75〜1.6mmとしたものである。 In order to solve the above-mentioned problems, the electric toothbrush according to claim 1 has a thickness (a) of the entire head portion including the brush portion of 1.2 to 1.7 cm, and a thickness (b) of the head portion not including the brush portion. The ratio (c / b) to the maximum brush length (c) is 0.9 to 1.5, and the cross-sectional area of the hair bundle is 0.75 to 1.6 mm 2 .

また、請求項2の電動歯ブラシは、上記請求項1の電動歯ブラシにおいて、刷毛部を構成する毛束を同心円状に複数周植毛するとともに、植毛部面積を0.6〜1.6cm、植毛密度を25〜35%とし、最外周に植毛された毛束の刷毛長を最内周に植毛された毛束の刷毛長よりも長くしたものである。 The electric toothbrush according to claim 2 is the electric toothbrush according to claim 1, wherein the hair bundle constituting the brush portion is implanted in a plurality of concentric circles, and the area of the flocked portion is 0.6 to 1.6 cm 2 . The density is 25 to 35%, and the brush length of the hair bundle planted on the outermost periphery is longer than the brush length of the hair bundle implanted on the innermost periphery.

刷毛の長さ(植毛面から毛先までの高さ)は刷掃効果や使用感に大きく影響するため、口腔内操作性を向上させるためとはいえ、極端に短くすることはよくない。短すぎる刷毛は毛がたわみにくく、毛腰が硬くなるため、使用感が悪くなるほか、歯グキを傷めやすくなる。刷毛部を含むヘッド部全体の厚みを1.2〜1.7cmとし、刷毛部を除くヘッド部全体の厚み(b)と最大刷毛長(c)との比(c/b)を0.9〜1.5の範囲に設定すれば、使用感のよい歯ブラシが得られる。   Since the length of the brush (height from the flocked surface to the tip of the hair) greatly affects the brushing effect and the feeling of use, it is not good to make it extremely short although it improves the operability in the oral cavity. Brushes that are too short tend to bend and become stiff, resulting in a poor feeling of use and easy damage to toothpaste. The thickness of the entire head portion including the brush portion is set to 1.2 to 1.7 cm, and the ratio (c / b) between the thickness (b) of the entire head portion excluding the brush portion and the maximum brush length (c) (c / b) is 0.9. If it is set in the range of -1.5, a toothbrush with good usability can be obtained.

毛束断面積は、0.75〜1.6mmとなるようにすると、歯グキへの当り心地が良く、歯間部など、細かいすき間への毛先の挿入実感の高い歯ブラシとすることができる。毛束の断面形状は、円形のほか、楕円、長方形やそれらの組合せ形状を単独あるいは組み合わせて10〜40穴使用してもよい。 Motabadan area, when such a 0.75~1.6Mm 2, better comfort contact of the tooth Guki may be a high bristles insertion feel to such gullet, fine gap Toothbrush it can. The cross-sectional shape of the hair bundle may be 10 to 40 holes, in addition to a circle, an ellipse, a rectangle, or a combination thereof alone or in combination.

また、すべての毛束についてその毛束断面積を0.75〜1.6mmとする必要はなく、植毛された全毛束のうち、少なくとも60%が前記毛束断面積を満たしていればよく、その他の毛束についてはさまざまな断面積の毛束とすることもできる。なお、本発明における毛束断面積とは、毛束の固定方法として平線植毛法を用いた場合には、植毛穴の断面積を用い、熱融着法やインモールド法などの場合には、植毛台の植毛面位置における毛束の横断面積を用いるものとする。 Moreover, it is not necessary for the hair bundle cross-sectional area to be 0.75 to 1.6 mm 2 for all hair bundles, and if at least 60% of all the hair bundles planted satisfy the hair bundle cross-sectional area. Well, other hair bundles can be made into hair bundles of various cross-sectional areas. The hair bundle cross-sectional area in the present invention means that when a flat wire flocking method is used as a method for fixing the hair bundle, the cross-sectional area of the flock hole is used, and in the case of a heat fusion method or an in-mold method, etc. The cross-sectional area of the hair bundle at the flocked surface position of the flocking table is used.

植毛部面積(最外周に位置する毛束または植毛穴の外側を直線で結んだ部分の面積)としては、同時に1〜2本の歯に刷毛が当る位がよく、このような条件を満たす植毛部面積としては0.6〜1.6cmが好ましい。 As a planted part area (the area of the hair bundle located on the outermost periphery or the part where the outside of the planted hole is connected by a straight line), it is good that the brush strikes one or two teeth at the same time. preferably 0.6~1.6Cm 2 as part area.

また、毛束の植毛密度(=毛束断面積の総和/植毛台面積×100)は、歯ブラシの刷掃実感と磨き心地に大きく関係する。植毛密度が小さいと、植毛部は疎毛になり、刷掃実感の低い歯ブラシとなる。逆に植毛密度が大きいと、密毛な植毛部となり、刷掃実感は高くなるが、全体的に硬くなるとともに毛束が歯間部などの細かいすき間に入りにくくなる。   In addition, the flocking density of the hair bundle (= sum of the cross-sectional area of the hair bundle / the flocked bed area × 100) is greatly related to the brushing feeling and brushing feeling of the toothbrush. When the flocking density is low, the flocked portion becomes hairless and a toothbrush with a low feeling of brushing. On the other hand, if the flocking density is high, a dense flocked portion is obtained and the brushing feeling is enhanced, but the whole is hardened and the hair bundle is less likely to enter a fine gap such as an interdental portion.

一般に、手用歯ブラシに比べて電動歯ブラシは刷毛長が短く、毛束がたわみにくい。さらに、高速で毛先が歯面を刷掃するので、高い刷掃実感が得られる反面、歯グキなどの軟組織を傷つけるおそれがある。これらの点から植毛密度は手用歯ブラシよりも若干低い方が好ましく、植毛密度25〜35%の範囲とするのがよい。   In general, an electric toothbrush has a shorter brush length than a hand toothbrush, and a hair bundle is less likely to bend. Furthermore, since the hair tip brushes the tooth surface at a high speed, a high brushing feeling can be obtained, but there is a risk of damaging soft tissues such as tooth scratches. From these points, the flocking density is preferably slightly lower than the hand toothbrush, and the flocking density is preferably in the range of 25 to 35%.

隣接した最も近い植毛穴または毛束間の植毛面位置における直線距離(以下、「最小離間距離」という)は、上記植毛密度を満たす条件によって或る程度制限されるが、植毛部の成形性の観点や植毛によるワレや白化を防ぐためにも、あまり近すぎるのはよくない。したがって、最小離間距離は0.5〜1.0mmの範囲とするのがよい。   The straight line distance (hereinafter referred to as “minimum separation distance”) at the flocked surface position between the adjacent flock holes or hair bundles adjacent to each other is limited to some extent by the conditions satisfying the flocking density. To prevent cracking and whitening from the viewpoint and flocking, it is not good to be too close. Therefore, the minimum separation distance is preferably in the range of 0.5 to 1.0 mm.

毛切り形状としては、最外周に植毛された毛束の刷毛長を最内周の毛束の刷毛長よりも長くすることで、歯間などの細かいスキ間への毛先の進入性を高めることができる。刷毛長の差(段差)には特に制限はないが、歯面に当てたときの植毛面の安定性と歯間などの凹凸への毛先の進入性から、刷毛長の差は0.3〜1.0mmが好ましく、0.5〜1.0mmとするとより好ましい。   As the hair cutting shape, the hair length of the hair bundle planted on the outermost circumference is made longer than the brush length of the innermost circumference hair bundle, thereby enhancing the penetration of the hair tip into fine gaps such as between teeth. be able to. The difference in brush length (step) is not particularly limited, but the difference in brush length is 0.3 due to the stability of the flocked surface when applied to the tooth surface and the penetration of the hair tip into irregularities such as between teeth. -1.0 mm is preferable, and 0.5-1.0 mm is more preferable.

段差を与えるための毛束の毛切りの手段としては特に制約はなく、複数回の植毛と毛切りを繰り返す方法(例えば、2度植え・2度切り法)や、クシを用いて毛束を分けて毛切りをする方法など、段差をつけることができればどのような方法でもよい。   There are no particular restrictions on the means for cutting the hair bundle to give a step, and a method of repeating hair transplantation and hair cutting a plurality of times (for example, twice planting / twice cutting method) or using a comb to separate the hair bundle. Any method can be used as long as a step can be provided, such as a method of cutting hairs separately.

往復反転式の電動歯ブラシでは、その反転角度は清掃効果や使用感などに大きく影響する。反転角度が小さすぎると、植毛面の動きに対して毛先が連動せず、清掃効果が低くなる。反対に、反転角が大きすぎると、毛先によって摩擦する面積が大きくなり、歯グキなどの軟組織を傷めやすくなる。また、反転角度が大きい場合は、遠心力もより大きくなるため、植毛面の唾液や歯磨剤などが飛び散りやすくなり、使用性が悪くなるというデメリットもある。これらの理由から、反転角度は20°〜40°とすることが望ましい。   In a reciprocating reversible electric toothbrush, the reversal angle greatly affects the cleaning effect and the feeling of use. If the reversal angle is too small, the hair tips do not interlock with the movement of the flocked surface, and the cleaning effect becomes low. On the other hand, if the inversion angle is too large, the area that is rubbed by the bristles increases, and soft tissues such as toothpicks are easily damaged. Further, when the reversal angle is large, the centrifugal force is also increased, so that saliva, dentifrice and the like on the flocked surface are likely to scatter and there is a demerit that usability deteriorates. For these reasons, the inversion angle is desirably 20 ° to 40 °.

往復反転速度には特に制限はないが、清掃効果や使用感などを考慮した場合、2,000〜7,000(往復/分)の範囲が好ましく、3,000〜6,000(往復/分)の範囲とするとより好ましい。   The reciprocation speed is not particularly limited, but in consideration of the cleaning effect and the feeling of use, the range of 2,000 to 7,000 (reciprocation / minute) is preferable, and 3,000 to 6,000 (reciprocation / minute). ) Is more preferable.

ブラシホルダー1、ヘッドカバー5などは図示例のように組み立て構造であってもよいし、一体成形構造であってもよい。また、ヘッド部、植毛台、ブラシホルダー、ヘッドカバーの素材としては、一般に歯ブラシ用に用いられている素材が使用可能であるが、機械的強度や成形性、耐歯磨性(耐薬品性)を考慮し、ABS樹脂や特にポリアセタール樹脂が好ましい。また、係合ピンや回転支軸に金属(例えばステンレス、真鍮など)を用いてもよい。   The brush holder 1, the head cover 5 and the like may have an assembly structure as shown in the drawing, or may have an integrally formed structure. In addition, as materials for the head, flocking table, brush holder, and head cover, materials generally used for toothbrushes can be used, but considering mechanical strength, moldability, and dentifrice resistance (chemical resistance) ABS resin and especially polyacetal resin are preferable. Moreover, you may use a metal (for example, stainless steel, brass, etc.) for an engagement pin or a rotation spindle.

使用する刷毛の材質は、通常用いられるナイロン(6−12ナイロン、6−10ナイロンなど)、ポリブチレンテレフタレートなどを用いればよく、ポリエチレンテレフタレートやポリトリメチレンテレフタレートでもよい。また、これら素材同士あるいはこれらと熱可塑性エラストマーなどとブレンドしてもよい。また、複合断面の刷毛としてもよい。   As the material of the brush to be used, nylon (6-12 nylon, 6-10 nylon, etc.) or polybutylene terephthalate that is usually used may be used, and polyethylene terephthalate or polytrimethylene terephthalate may be used. Further, these materials may be blended with each other or with a thermoplastic elastomer. Moreover, it is good also as a brush of composite cross section.

刷毛の横断面形状は円形が主であるが、とくに限定するものではない。例えば三角形、四角形、六角形、花びら状などの横断面形状の刷毛を用いることもできる。また、これらの形状を組み合わせた形状であってもよい。また、予め刷毛全体の外観形状がウエ−ブ状、ツイスト状、ギザギザ状などに加工された刷毛を用いて毛束を構成することもでき、これらを組み合わせることも可能である。   The cross-sectional shape of the brush is mainly circular, but is not particularly limited. For example, a brush having a cross-sectional shape such as a triangle, a quadrangle, a hexagon, and a petal can be used. Moreover, the shape which combined these shapes may be sufficient. In addition, the hair bundle can be configured by using a brush whose outer shape is preliminarily processed into a wave shape, a twist shape, a jagged shape, or the like, and these can be combined.

毛束を構成する刷毛の太さは、3〜9mil(0.076〜0.221mm)、好ましくは5〜7mil(0.127〜0.172mm)がよい。   The thickness of the brush constituting the hair bundle is 3 to 9 mil (0.076 to 0.221 mm), preferably 5 to 7 mil (0.127 to 0.172 mm).

また、通常は毛先の丸め部を除いて1本の刷毛内ではほぼ同一径であるが、根元付近では上記刷毛太さであっても、毛先先端へ向かうに従って徐々に径が細くなるテ−パ−毛の形態であってもよい。   Normally, the diameter of one brush is almost the same except for the rounded portion of the bristles, but the diameter gradually decreases toward the tip of the bristles, even if the thickness of the bristles is near the root. -It may be in the form of hair.

刷毛の先端形状は、ヘラ状、先薄幅広状、球状などであってもよい。また、刷毛の特性を大きく損なわない範囲内で改質をすることもでき、熱や光に対する安定化剤、難燃剤、フィラ−、表面潤滑剤、帯電防止剤、殺菌素材(抗菌素材)、さらには他の樹脂やエラストマーなどを適宜配合したり、塗布したりしてもよい。   The tip shape of the brush may be a spatula shape, a tapered wide shape, a spherical shape, or the like. It can also be modified within a range that does not significantly impair the characteristics of the brush, such as heat and light stabilizers, flame retardants, fillers, surface lubricants, antistatic agents, sterilizing materials (antibacterial materials), May be blended or coated with other resins or elastomers as appropriate.

植毛時に用いられる刷毛の形態は特に制限はなく、ハンク状(一定長さにカットして束ねたもの)、スプ−ル状(リ−ルに巻き取られたもの)など、任意のものを使用して公知の方法により植毛することが可能である。   The shape of the brush used at the time of flocking is not particularly limited, and any shape such as a hank shape (cut to a fixed length and bundled) or a spool shape (rolled around a reel) is used. Thus, it is possible to plant hair by a known method.

毛束の固定方法としては、抜け止め部材(平線)を用いた平線植毛法のほか、毛束下端の溶融部を溶融している歯ブラシヘッド部中へ圧入して固定する熱融着法(特開昭60−241404号公報参照)や、毛束の下端を加熱して溶融塊を形成した後、金型内に溶融樹脂を注入して歯ブラシを成形するインモールド法(特開昭61−268208号公報、特表平9−512724号公報参照)など、公知の方法を利用することができる。   As a method of fixing the hair bundle, in addition to a flat wire flocking method using a retaining member (flat wire), a heat fusion method in which the melted portion at the lower end of the hair bundle is pressed into a melting toothbrush head portion and fixed. (See JP-A-60-241404) or an in-mold method in which a lower end of a bristle bundle is heated to form a molten lump and then a molten resin is injected into the mold to mold a toothbrush (JP-A-61-61). -268208 publication, Japanese translations of PCT publication No. 9-512724 publication), etc. can use well-known methods.

なお、平線植毛法による場合、1つの植毛穴の断面積から平線の断面積を引いて得られる実植毛穴断面積(A)に占める刷毛総断面積(B)の割合(B/A×100 %)をパッキングファクターとするとき、その値について特に限定はないが、好ましくは60〜100%、より好ましくは65〜95%とするのがよい。   In addition, in the case of the flat wire flocking method, the ratio (B / A) of the total brush cross-sectional area (B) to the actual flocked hole cross-sectional area (A) obtained by subtracting the cross-sectional area of the flat wire from the cross-sectional area of one flocked hole When x 100%) is used as the packing factor, the value is not particularly limited, but is preferably 60 to 100%, more preferably 65 to 95%.

また、平線植毛法における抜け止め部材としては、生産性、コストの点から一般的に真鍮またはアルミニウムの平板状の平線が用いられているが、特に限定はなく、物理的に任意の植毛穴に刷毛または刷毛束を打ち込むことが可能であればよい。材質(金属、プラスチック、天然材料など)、寸法、形状についても任意に選択可能であり、例えば特開2000−325145号公報に記載の平線を用いることもできる。   In addition, as a retaining member in the flat wire flocking method, a flat plate of brass or aluminum is generally used from the viewpoint of productivity and cost, but there is no particular limitation, and any desired planting is physically performed. It is only necessary that the brush or the brush bundle can be driven into the pores. The material (metal, plastic, natural material, etc.), dimensions, and shape can be arbitrarily selected. For example, a flat wire described in JP 2000-325145 A can be used.

本発明によれば、電動歯ブラシにおけるヘッド部の仕様を口腔内清掃に最適な特定の寸法関係に設定したので、口腔内操作性がよく、磨き心地に優れ、しかも刷掃効果の高い高品質な電動歯ブラシを得ることができる。   According to the present invention, the specification of the head portion of the electric toothbrush is set to a specific dimensional relationship optimal for oral cleaning, so that the oral operability is good, the polishing comfort is excellent, and the high cleaning effect is high. An electric toothbrush can be obtained.

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および図2に、本発明に係る電動歯ブラシの第1の実施の形態を示す。
図において、1は中空略筒状のブラシホルダー、2は複数の毛束12によって構成された刷毛部、3は毛束12の植設された植毛台、4は往復動するスライド軸、5は植毛台3とスライド軸4を保護するとともに、植毛台3をブラシホルダー1の先端部分に回転自在に取り付けるためのヘッドカバー、6はブラシホルダー1に連接する握り部であって、刷毛部2、植毛台3およびヘッドカバー5の先端部分によって口腔内清掃のためのヘッド部7が構成されている。
Embodiments of the present invention will be described below with reference to the drawings.
1 and 2 show a first embodiment of an electric toothbrush according to the present invention.
In the figure, 1 is a hollow, substantially cylindrical brush holder, 2 is a brush portion constituted by a plurality of hair bundles 12, 3 is a hair transplant table in which the hair bundle 12 is implanted, 4 is a reciprocating slide shaft, A head cover for protecting the flocking table 3 and the slide shaft 4 and rotatably attaching the flocking table 3 to the tip of the brush holder 1, 6 is a gripping part connected to the brush holder 1, and includes a brush part 2, flocking A head portion 7 for cleaning in the oral cavity is constituted by the tip portion of the base 3 and the head cover 5.

握り部6の内部には、スライド軸4をブラシホルダー1の長軸方向に向かって高速で往復動させるためのモーター、ギヤ、カム、電池などで構成された往復運動機構(図示略)が内蔵されている。   A reciprocating mechanism (not shown) composed of a motor, a gear, a cam, a battery, and the like for reciprocating the slide shaft 4 at a high speed in the long axis direction of the brush holder 1 is built in the grip portion 6. Has been.

ヘッドカバー5の先端側内面には回動支軸8が形成されているとともに、これと対応する植毛台3の上面中央位置には取付穴9が形成されており、ヘッドカバー5の回動支軸8を該取付穴7に回動自在に嵌合することにより、植毛台3は回動支軸8のまわりに回動自在に軸支されている。   A rotation support shaft 8 is formed on the inner surface at the front end side of the head cover 5, and a mounting hole 9 is formed at the center of the upper surface of the flocking table 3 corresponding to the rotation support shaft 8. The hair transplant table 3 is pivotally supported around the pivot shaft 8 by being fitted in the mounting hole 7 so as to be pivotable.

また、植毛台3の上面には、前記取付穴9から所定の距離だけ偏芯させた位置に係合孔10が形成されており、この係合孔10にスライド軸4の先端の係合ピン11を差し込んで係合させることにより、スライド軸4の往復運動に従って植毛台3が回動支軸8を回動中心として往復反転回動するように構成されている。なお、口腔内での操作性を向上させるため、植毛台3以外のヘッド部7部分は極力容積を小さくすることが好ましい。   Further, an engagement hole 10 is formed on the upper surface of the flocking table 3 at a position eccentric from the mounting hole 9 by a predetermined distance. An engagement pin at the tip of the slide shaft 4 is formed in the engagement hole 10. By inserting 11 and engaging, the flocking table 3 is configured to reciprocate and reversely rotate about the rotation support shaft 8 according to the reciprocating motion of the slide shaft 4. In addition, in order to improve the operativity in an intraoral area, it is preferable to make the volume of head part 7 parts other than the flocking table 3 as small as possible.

そして、この第1の実施の形態に係る電動歯ブラシは、刷毛部2を構成する多数本の毛束12を植毛台3の植毛面に同心円状に三重に植毛するとともに、ヘッド部7の各部の寸法関係を以下のように設定したものである。   In the electric toothbrush according to the first embodiment, the multiple hair bundles 12 constituting the brush portion 2 are concentrically arranged on the flocking surface of the flocking table 3 in a triple manner, and each portion of the head portion 7 is provided. The dimensional relationship is set as follows.

(1)ヘッド部7の全体厚みa=16.5mm
(2)毛束12を含まないヘッド部7の厚みb=8.0mm
(3)最大刷毛長c=8.5mm
(4)c/b=1.1
(5)植毛台3の直径=13.4mm
(6)同心円の直径(mm)
最外周/中央周/最内周=11.1/6.9/3.3
(7)植毛穴の穴径(直径mm)
最外周/中央周/最内周=1.3/1.3/1.3
(8)植毛穴断面積(mm
最外周/中央周/最内周=1.3/1.3/1.3
(9)穴配列
最外周/中央周/最内周=16穴/11穴/5穴 計32穴
(10)用毛径(mil)
最外周/中央周/最内周=6/6/6 (6mil=0.152mm)
(11)刷毛長(mm)
最外周/中央周/最内周=8.5/8.0/8.0
(12)毛束断面積(植毛穴断面積)の総和=42.5mm
(13)植毛部面積=1.2cm
(14)植毛台面積=1.4cm
(15)植毛密度(毛束断面積の総和/植毛台面積×100)=30%
(16)同じ円上における毛束間の最小離間距離(mm)
最外周/中央周/最内周=0.55/0.64/0.64
(17) 同心円間における毛束間の最小離間距離(mm)
最外周と中央周間/中央周と最内周間=0.8/0.5
(1) Overall thickness a of head portion 7a = 16.5 mm
(2) Thickness b of head portion 7 not including hair bundle 12 = 8.0 mm
(3) Maximum brush length c = 8.5mm
(4) c / b = 1.1
(5) Diameter of the flocking table 3 = 13.4 mm
(6) Concentric circle diameter (mm)
Outermost circumference / center circumference / innermost circumference = 11.1 / 6.9 / 3.3
(7) Hole diameter (diameter mm) of flocking hole
Outermost circumference / center circumference / innermost circumference = 1.3 / 1.3 / 1.3
(8) Flocked hole cross-sectional area (mm 2 )
Outermost circumference / center circumference / innermost circumference = 1.3 / 1.3 / 1.3
(9) Hole arrangement Outermost circumference / center circumference / innermost circumference = 16 holes / 11 holes / 5 holes Total 32 holes (10) Hair diameter (mil)
Outermost circumference / center circumference / innermost circumference = 6/6/6 (6 mil = 0.152 mm)
(11) Brush length (mm)
Outermost circumference / center circumference / innermost circumference = 8.5 / 8.0 / 8.0
(12) Sum of hair bundle cross-sectional area (planted hole cross-sectional area) = 42.5 mm 2
(13) Flocked area = 1.2 cm 2
(14) Flocking table area = 1.4cm 2
(15) Flocking density (total hair cross-sectional area / flocking table area × 100) = 30%
(16) Minimum separation distance between hair bundles on the same circle (mm)
Outermost circumference / center circumference / innermost circumference = 0.55 / 0.64 / 0.64
(17) Minimum separation distance between hair bundles between concentric circles (mm)
Between outermost circumference and center circumference / between center circumference and innermost circumference = 0.8 / 0.5

上記構成の電動歯ブラシは、次のようにして使用される。
握り部6など設けられた電源スイッチ13をONすると、内蔵した往復運動機構が往復運動を開始し、スライド軸4をブラシホルダー1の長軸方向に向かって所定の速度で往復動する。
The electric toothbrush having the above configuration is used as follows.
When the power switch 13 provided for the grip 6 or the like is turned on, the built-in reciprocating mechanism starts reciprocating movement, and reciprocates the slide shaft 4 at a predetermined speed in the major axis direction of the brush holder 1.

スライド軸4が往復動すると、その往復動は植毛台3の係合孔10に差し込まれた係合ピン11によって植毛台3に伝わり、植毛台3はヘッドカバー5の回動支軸8を回動中心として回動支軸8のまわりに所定の速度で往復反転回動を開始する。したがって、植毛台3の刷毛部2も往復反転回動するので、この往復反転回動する刷毛部2を歯面や歯間、歯グキなどの刷掃部位に当てることにより、歯磨きを行なうことができる。   When the slide shaft 4 reciprocates, the reciprocating motion is transmitted to the flocking table 3 by the engagement pin 11 inserted into the engagement hole 10 of the flocking table 3, and the flocking table 3 rotates the rotation support shaft 8 of the head cover 5. A reciprocating reverse rotation is started around the rotation support shaft 8 at a predetermined speed as a center. Accordingly, the brush portion 2 of the flocking table 3 also rotates reciprocally and reversely, so that brushing can be performed by applying the brush portion 2 reciprocally reversing and rotating to a brushed part such as a tooth surface, an interdental space or a toothpick. it can.

なお、植毛台3の厚みを薄くしてヘッド部7の全体厚みaを薄くするには、回転支軸8をできるだけ短くすればよい。強度を確保しつつ回転支軸8を短くするには、回転支軸8の一部(好ましくは全長の20〜80%、より好ましくは全長の40〜60%)を植毛台3内に埋没させればよい。その場合、取付穴9も植毛台3内に入り込むように形成されるため、取付穴9を穿たれた部分については植毛穴を形成することができず、植毛台3の中央部分に刷毛を植設できない領域ができるが、その面積を極力小さく(例えばφ2mm)することにより、刷掃効果や使用感に対する影響を最小限に抑えることができる。   In order to reduce the thickness of the flocking table 3 and the overall thickness a of the head portion 7, the rotation support shaft 8 should be as short as possible. In order to shorten the rotation support shaft 8 while ensuring the strength, a part of the rotation support shaft 8 (preferably 20 to 80% of the total length, more preferably 40 to 60% of the total length) is buried in the flocking table 3. Just do it. In that case, since the attachment hole 9 is also formed so as to enter the flocking table 3, the flocked hole cannot be formed in the portion where the attachment hole 9 is drilled, and the brush is implanted in the central portion of the flocking table 3. An area that cannot be provided is formed, but by making the area as small as possible (for example, φ2 mm), it is possible to minimize the influence on the cleaning effect and the feeling of use.

図3に、本発明に係る電動歯ブラシの第2の実施の形態を示す。
この第2の実施の形態は、同一円周上に並んだ各毛束12間の最小離間距離をすべて同じ距離、すなわち、最外周/中央周/最内周=0.87/0.64/0.64(mm)とした場合の例を示すもので、それ以外の部分の構造ならびに寸法は前記第1の実施の形態と同じであるので、その詳細な説明は省略する。
FIG. 3 shows a second embodiment of the electric toothbrush according to the present invention.
In the second embodiment, the minimum separation distance between the hair bundles 12 arranged on the same circumference is the same, that is, the outermost circumference / center circumference / innermost circumference = 0.87 / 0.64 / An example in the case of 0.64 (mm) is shown. Since the structure and dimensions of the other parts are the same as those in the first embodiment, detailed description thereof will be omitted.

以下、本発明の電動歯ブラシと従来の電動歯ブラシの使用試験の結果を示す。
(1)口腔内操作性と使用感
表1に示す本発明品(図1の電動歯ブラシ)と、比較例1,2(従来品)を用いて歯磨きを行ない、その時の操作性と使用感の違いを7段階官能評価によって評価した。その試験結果を表2に示す。
Hereinafter, the result of the use test of the electric toothbrush of the present invention and the conventional electric toothbrush will be shown.
(1) Intraoral operability and feeling of use Toothbrushing was performed using the product of the present invention (electric toothbrush in FIG. 1) shown in Table 1 and Comparative Examples 1 and 2 (conventional products). Differences were evaluated by a 7-step sensory evaluation. The test results are shown in Table 2.

Figure 2005160498
Figure 2005160498

Figure 2005160498
Figure 2005160498

なお、表2中の各項目の評価は、それぞれ下記の7段階絶対評価によったもので、パネラー10名による平均値を評価点とした。
(I)奥歯の磨きやすさ、口腔内操作性、歯グキへの当たり心地
1:非常に悪い 2:かなり悪い 3:やや悪い 4:どちらでもない 5:やや良い 6:かなり良い 7:非常に良い
(II)毛先が当たったときの痛み
1:非常にある 2:かなりある 3:ややある 4:どちらでもない 5:あまりない 6:かなりない 7:非常にない
The evaluation of each item in Table 2 was based on the following 7-step absolute evaluation, and the average value by 10 panelists was used as the evaluation score.
(I) Easiness of brushing of the back teeth, operability in the oral cavity, comfort against teething 1: Very bad 2: Pretty bad 3: Somewhat bad 4: Neither of them 5: Somewhat good 6: Pretty good 7: Very good Good (II) Pain when hitting hair tip 1: Very 2: Very good 3: Somewhat 4: Neither 5: Not very 6: Not quite 7: Very not

表2の試験結果から明らかなように、本発明品は、奥歯の磨きやすさ、口腔内操作性、歯グキへの当たり心地、毛先が当たったときの痛みなどのすべての点において、従来品たる比較例1,2のいずれよりも優れていることが確認された。   As is apparent from the test results in Table 2, the product of the present invention is conventional in all respects such as ease of brushing the back teeth, operability in the oral cavity, comfort on the toothpick, and pain when hitting the hair tip. It was confirmed that it was superior to both of the comparative examples 1 and 2 as a product.

(2)刷掃効果試験
上記表1中の本発明品と比較例2の電動歯ブラシを用い、刷掃効果(歯垢除去率)のモデル試験を行なった。その結果を表3に示す。なお、試験方法としては、電動歯ブラシのヘッド部に200gの荷重をかけながら顎模型臼歯部表面を10秒間刷掃し、そのときの歯垢除去率を測定した。
(2) Brushing effect test Using the product of the present invention in Table 1 and the electric toothbrush of Comparative Example 2, a model test of the brushing effect (plaque removal rate) was performed. The results are shown in Table 3. As a test method, the surface of the jaw model molar part was wiped for 10 seconds while applying a load of 200 g to the head part of the electric toothbrush, and the plaque removal rate at that time was measured.

Figure 2005160498
Figure 2005160498

表3の試験結果から明らかなように、本発明品は、従来品たる比較例2に比べて歯垢除去率においても格段に優れていることが確認された。   As is clear from the test results in Table 3, it was confirmed that the product of the present invention was remarkably superior in the plaque removal rate as compared with Comparative Example 2 as a conventional product.

本発明に係る電動歯ブラシの第1の実施の形態を示すもので、(a)は電動歯ブラシの全体構成を示す側面図、(b)は植毛台の拡大側面図、(c)は植毛台の拡大平面図、(d)は同じく植毛台の拡大平面図、(e)は植毛台の拡大背面図である。1 shows a first embodiment of an electric toothbrush according to the present invention, (a) is a side view showing the overall configuration of the electric toothbrush, (b) is an enlarged side view of a flocking table, and (c) is a flocking table. An enlarged plan view, (d) is an enlarged plan view of the flocking table, and (e) is an enlarged rear view of the flocking table. 図1の電動歯ブラシの一部切断分解斜視図である。FIG. 2 is a partially cut exploded perspective view of the electric toothbrush of FIG. 1. 本発明に係る電動歯ブラシの第2の実施の形態を示すもので、植毛台の拡大平面図である。The 2nd Embodiment of the electric toothbrush which concerns on this invention is shown, and is an enlarged plan view of a flocking table.

符号の説明Explanation of symbols

1 ブラシホルダー
2 刷毛部
3 植毛台
4 スライド軸
5 ヘッドカバー
6 握り部
7 ヘッド部
8 回動支軸
9 取付穴
10 係合孔
11 係合ピン
12 毛束
13 電源スイッチ
a 刷毛部を含むヘッド部全体の厚み
b 刷毛部を含まないヘッド部の厚み
c 最大刷毛長
DESCRIPTION OF SYMBOLS 1 Brush holder 2 Brush part 3 Flocking table 4 Slide shaft 5 Head cover 6 Grip part 7 Head part 8 Rotating spindle 9 Mounting hole 10 Engagement hole 11 Engagement pin 12 Hair bundle 13 Power switch a Whole head part including a brush part Thickness b Head thickness not including the brush part c Maximum brush length

Claims (2)

刷毛部を含むヘッド部全体の厚み(a)を1.2〜1.7cmとし、刷毛部を含まないヘッド部の厚み(b)と最大刷毛長(c)との比(c/b)を0.9〜1.5とするとともに、毛束断面積を0.75〜1.6mmとしたことを特徴とする電動歯ブラシ。 The thickness (a) of the entire head part including the brush part is 1.2 to 1.7 cm, and the ratio (c / b) between the thickness (b) of the head part not including the brush part and the maximum brush length (c) is set. The electric toothbrush characterized by being 0.9-1.5 and having a bristle bundle cross-sectional area of 0.75-1.6 mm 2 . 請求項1記載の電動歯ブラシにおいて、刷毛部を構成する毛束を同心円状に複数周植毛するとともに、植毛部面積を0.6〜1.6cm、植毛密度を25〜35%とし、最外周に植毛された毛束の刷毛長を最内周に植毛された毛束の刷毛長よりも長くしたことを特徴とする電動歯ブラシ。
The electric toothbrush according to claim 1, wherein the bristles constituting the brush portion are implanted in a plurality of concentric circles, the area of the flocked portion is 0.6 to 1.6 cm 2 , the flocking density is 25 to 35%, and the outermost periphery. The electric toothbrush characterized by making the brush length of the hair bundle planted in the hair longer than the brush length of the hair bundle planted in the innermost circumference.
JP2003399429A 2003-11-28 2003-11-28 Electric toothbrush Pending JP2005160498A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013512751A (en) * 2009-12-15 2013-04-18 ブラウン ゲーエムベーハー Brush part of electric toothbrush
WO2016199853A1 (en) * 2015-06-12 2016-12-15 ライオン株式会社 Toothbrush
WO2018199081A1 (en) * 2017-04-24 2018-11-01 サンスター株式会社 Electric toothbrush

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013512751A (en) * 2009-12-15 2013-04-18 ブラウン ゲーエムベーハー Brush part of electric toothbrush
WO2016199853A1 (en) * 2015-06-12 2016-12-15 ライオン株式会社 Toothbrush
JPWO2016199853A1 (en) * 2015-06-12 2018-03-29 ライオン株式会社 toothbrush
WO2018199081A1 (en) * 2017-04-24 2018-11-01 サンスター株式会社 Electric toothbrush
JPWO2018199081A1 (en) * 2017-04-24 2020-03-12 サンスター株式会社 electric toothbrush
US11478342B2 (en) 2017-04-24 2022-10-25 Sunstar Inc. Electric toothbrush

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