EP1001693B1 - Toothbrush - Google Patents

Toothbrush Download PDF

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Publication number
EP1001693B1
EP1001693B1 EP98942597A EP98942597A EP1001693B1 EP 1001693 B1 EP1001693 B1 EP 1001693B1 EP 98942597 A EP98942597 A EP 98942597A EP 98942597 A EP98942597 A EP 98942597A EP 1001693 B1 EP1001693 B1 EP 1001693B1
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EP
European Patent Office
Prior art keywords
brush head
bristles
individual
toothbrush according
individual bristles
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP98942597A
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German (de)
French (fr)
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EP1001693A1 (en
Inventor
Georg Weihrauch
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Coronet Werke GmbH
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Coronet Werke GmbH
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    • 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

Definitions

  • the invention relates to a toothbrush with a brush head made of plastic and standing individually in the brush head embedded plastic bristles with little Are spaced from each other.
  • Toothbrushes of this construction are known (WO 96/27 308). Compared to conventional toothbrushes where the bristles combined into individual bundles and several Bundles are attached to the brush head, have the aforementioned Toothbrushes have the advantage that at Cleaning primarily effective bristle ends on the effective brush surface are evenly distributed so that with the dentist-recommended cleaning method of red according to white, that is, an essentially vertical guide the brush with a superimposed slight swiveling movement the entire area covered by the bristle trim is cleaned (teeth) or massaged (gums), while toothbrushes with the usual bundle certain areas of the tooth flesh and / or teeth untreated stay.
  • the nursing or Cleaning condition of the molars especially on the Outside of the dentition (distal) much worse than in the anterior region.
  • This is related to the essential poor accessibility of the molars, the often cramped conditions in the distal space, which at Anomalies in dentition serious forms can assume, and that in the distal area of the molars Often increased sensitivity and irritability ever after guiding the toothbrush to the point of nausea can.
  • the dental cleaning method recommended red / white can be seen in the molar area because of the cramped Carry out conditions insufficiently. by virtue of the greater pressure load occurs in this area also more likely to injuries to the gums and Enamel lesions.
  • the invention has for its object a toothbrush to create a perfect even in the molar area
  • this object is achieved according to the invention in that about 400 to 800 individual bristles per cm 2 are arranged on the brush head on the area provided with bristles and which result from the free length of the individual bristles and the thickness of the brush head, the overall height of the toothbrush is between 6.5 and 11 mm.
  • the toothbrush designed according to the invention stands out initially due to an extremely low overall height free bristle length and thickness of the brush head formed is out. It is between 6.5 and 11mm while it with conventional toothbrushes up to 20mm is sufficient. by virtue of This flat design is also the distal area of the molars can be easily cleaned there red / white method can be applied and the proof to be determined exclusively by the user, since the No more pressure on the toothbrush on the inside of the cheek exercises. Due to the number of individual bristles standing at a short distance can be the bending stiffness despite the shorter length of the Set the individual bristles to the desired size or user-specific ablacen.
  • the training according to the invention is both for manual guided toothbrushes, so one on the brush head have attached handle, as well as for electrical powered toothbrushes where the brush head is on a drive is attached with the same effects used.
  • the free length of the individual bristles is preferably between 5 and 9.5mm and the thickness of the brush head between 1.5 and 3.0mm.
  • the small thickness of the brush head is particularly possible in that the individual bristles to achieve the necessary pull-out strength only a short length in the plastic of the brush head must be embedded.
  • the training according to the invention also allows the to give effective brushing surface a topography, in the free ends of the individual bristles on a steady or discontinuously curved envelope surface, their distance varies from the surface of the brush head by up to 3mm.
  • Another variation option for bending stiffness results from the fact that the diameter of the individual bristles is between 0.095 and 0.225mm and the selected one effective diameter, the smaller the smaller the free length of the individual bristles.
  • a preferred embodiment of the toothbrush according to the invention is characterized in that the overall height of the toothbrush is approximately 8.5 mm with a free length of the individual bristles of 7 mm and a thickness of the brush head of 1.5 mm, approximately 600 bristles per cm 2 being provided ,
  • the training according to the invention also gives the possibility that the brush head on its bristle side has convex surface and the individual bristles are arranged approximately perpendicular to the surface.
  • the ends of the bristles lie if they have the same length, on a corresponding one convex envelope surface. This enables at red / white method in which the toothbrush is usually light is pivoted, a better attack of the bristle ends.
  • Convention bundle toothbrushes you have that tries to achieve the same effect in that the Bundle only in the longitudinal central axis of the brush head inclined perpendicular to the surface and outwards be ordered with a simultaneous reduction in the outer bundle. But due to the inclination the brushing and cleaning effect of the individual bundles differently. In addition, due to the sloping Bristle the risk that they are against the direction of cleaning flip and then look like skewers.
  • the convex formation the brush head in the context of the invention is without appreciable increase in height due to the low Thickness of the brush head possible.
  • the back of the brush head can also be used be concave so that the brush head has approximately the same thickness over its entire length, without the brush head sticking through this profile becomes.
  • the point perpendicular to the Surface standing individual bristles preferably the same Length on.
  • the embedding length of the attachment-side ends of the Single bristle is preferably less than 10 times of the diameter of the bristle.
  • the embedding length is So with the above Diameter range from 0.125 to 0.225mm at a maximum of 1.25 to 2.25mm.
  • Figures 1 and 2 is one for manual use certain toothbrush 1 shown. It has a stem 2, a preferably flexible neck 3 and a brush head 4 with 5 bristles.
  • the bristle trim 5 consists of individually standing and with a small distance bristles arranged from each other, as can be seen from the figures 3 and 4 results.
  • the individual bristles 6 are with their Anchored ends 7 in the brush head 4. For example have the individual bristles at their ends 7 by melting the same obtained thickenings 8, by means of by molding them with the plastic of the brush head 4 are anchored in this.
  • the bristles 6 have a diameter between 0.095 and 0.225mm and a free length "1" from 5 to 9.5mm.
  • the overall height of the toothbrush in the area of the brush head is between 6.5 and 11mm, the thickness "d" the brush head is between 1.5 and 3.0 mm.
  • the depth of embedding "a" of the individual bristles is between 0.2 and 0.8mm, preferably about 0.4mm.
  • the distance of the Individual bristles 6 among one another are preferably selected that there are about 600 bristles on a square centimeter are located.
  • the brush head arched in cross section so that the ends of the Individual bristles 6 on a correspondingly curved envelope surface lie.
  • This envelope can be different Lengths of the individual bristles 6 also corrugated or stepped his.
  • the individual bristles are perpendicular to Surface of the brush head 4.

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  • Brushes (AREA)

Description

Die Erfindung betrifft eine Zahnbürste mit einem Bürstenkopf aus Kunststoff und in dem Bürstenkopf einzeln stehend eingebetteten Borsten aus Kunststoff, die mit geringem Abstand voneinander angeordnet sind.The invention relates to a toothbrush with a brush head made of plastic and standing individually in the brush head embedded plastic bristles with little Are spaced from each other.

Zahnbürsten dieses Aufbaus sind bekannt (WO 96/27 308). Gegenüber herkömmlichen Zahnbürsten, bei denen die Borsten zu einzelnen Bündeln zusammengefaßt und mehrere Bündel am Bürstenkopf befestigt sind, weisen die vorgenannten Zahnbürsten den Vorteil auf, daß die bei der Reinigung in erster Linie wirksamen Borstenenden auf der wirksamen Bürstfläche gleichmäßig verteilt sind, so daß bei der zahnmedizinisch empfohlenen Putzmethode von rot nach weiß, also einer im wesentlichen senkrechten Führung der Bürste mit einer überlagerten leichten Schwenkbewegung der gesamte vom Borstenbesatz überstrichene Bereich gereinigt (Zähne) bzw. massiert (Zahnfleisch) wird, während bei Zahnbürsten mit dem üblichen Bündelbesatz gewisse Partien des Zahnfleichs und/oder der Zähne unbehandelt bleiben. Man hat dies schon dadurch zu beheben versucht, daß die Borsten innerhalb des Bündels nicht parallel angeordnet, sondern gespreizt sind, was beim Putzen zur Folge hat, daß die Borsten unter unterschiedlichen Winkeln gegenüber der zu reinigenden Fläche stehen. Dies kann im Bereich des Zahnfleischs zu Verletzungen führen. Im übrigen wirken die geneigten Borsten weniger mit dem verrundeten Borstenende, als mit dem Übergangsbereich zum Borstenmantel. Da diese Übergänge bei nicht einwandfrei verrundeten Borsten kantig sein können, kann es wiederum zu Zahnfleichverletzungen oder feinen Liäsonen am Zahnschmelz kommen.Toothbrushes of this construction are known (WO 96/27 308). Compared to conventional toothbrushes where the bristles combined into individual bundles and several Bundles are attached to the brush head, have the aforementioned Toothbrushes have the advantage that at Cleaning primarily effective bristle ends on the effective brush surface are evenly distributed so that with the dentist-recommended cleaning method of red according to white, that is, an essentially vertical guide the brush with a superimposed slight swiveling movement the entire area covered by the bristle trim is cleaned (teeth) or massaged (gums), while toothbrushes with the usual bundle certain areas of the tooth flesh and / or teeth untreated stay. One has to fix this already tries that the bristles within the bundle are not arranged in parallel, but are spread, what when Brushing has the result that the bristles under different Stand angles to the surface to be cleaned. This can cause injury to the gums to lead. Otherwise the inclined bristles work less with the rounded bristle end than with the Transition area to the bristle coat. Because these transitions if the bristles are not perfectly rounded, be edgy can, in turn, lead to tooth injury or fine lesions on the enamel.

Maßgeblich für die Wirksamkeit der Zahnbürste ist unter anderem die Biegesteifigkeit der Borsten. Sie wird bei einem Bündel im wesentlichen durch die Bündellänge und die Packungsdichte der Borsten im Bündel sowie den Durchmesser der einzelnen Borste bestimmt, wobei letzterer den geringsten Einfluß hat, da sich die Borsten im Bündel aneinander abstützen, so daß die Biegesteifigkeit des Bündels um ein vielfaches größer ist als die der einzelnen Borste. Bei der zuvor genannten bekannten Zahnbürste (WO 96/27 308) mit einzeln stehenden Borsten, wird die Biegesteifigkeit zusätzlich durch den Abstand der Borsten voneinander beeinflußt und ist aufgrund des Abstandes der Einfluß des Borstendurchmessers ausgeprägter als bei Bündeln. Dadurch läßt sich die Biegesteifigkeit in feinen Abstufungen variieren, insbesondere feiner abstufen, als die bisher bei Zahnbürsten üblichen Abstufungen "weich", "mittel" und "hart". Durch die gegenüber Bündeln geringere Einbettungslänge der Einzelborsten, läßt sich die Bauhöhe des Bürstenkopfs verringern.Decisive for the effectiveness of the toothbrush is under among other things the bending stiffness of the bristles. You will at a bundle essentially by the bundle length and the packing density of the bristles in the bundle and the diameter of the individual bristle, the latter the least influence since the bristles are in the bundle support each other so that the bending stiffness of the Bundle is many times larger than that of the individual Bristle. In the aforementioned known toothbrush (WO 96/27 308) with individually standing bristles the bending stiffness additionally by the distance of the Bristles are affected by each other and is due to the Distance the influence of the bristle diameter more pronounced than with bundles. This allows the bending stiffness vary in fine gradations, especially finer grading than the previously usual gradations for toothbrushes "soft", "medium" and "hard". By the opposite Bundles of shorter embedding lengths of the individual bristles, the overall height of the brush head can be reduced.

Nach zahnmedizinischen Erkenntnissen ist der Pflege- bzw. Reinigungszustand der Backenzähne, insbesondere auf den Außenseiten des Gebisses (distal) ungleich schlechter als im Frontzahnbereich. Dies hängt zusammen mit der wesentlich schlechteren Zugänglichkeit der Backenzähne, der häufig beengten Verhältnisse im Distalraum, die bei Anomalitäten in der Gebißbildung gravierende Formen annehmen können, und der im Distalbereich der Backenzähne häufig gesteigerten Sensibilität und Reizbarkeit, die je nach Führung der Zahnbürste bis zum Brechreiz führen kann. Auch die zahnmedizinisch empfohlene Putzmethode rot/weiß läßt sich im Backenzahnbereich wegen der beengten Verhältnisse nur unzureichend durchführen. Aufgrund der größeren Druckbeanspruchung kommt es in diesem Bereich auch eher zu Verletzungen des Zahnfleischs und Liäsonen des Zahnschmelzes.According to dental knowledge, the nursing or Cleaning condition of the molars, especially on the Outside of the dentition (distal) much worse than in the anterior region. This is related to the essential poor accessibility of the molars, the often cramped conditions in the distal space, which at Anomalies in dentition serious forms can assume, and that in the distal area of the molars Often increased sensitivity and irritability ever after guiding the toothbrush to the point of nausea can. Also the dental cleaning method recommended red / white can be seen in the molar area because of the cramped Carry out conditions insufficiently. by virtue of the greater pressure load occurs in this area also more likely to injuries to the gums and Enamel lesions.

Der Erfindung liegt die Aufgabe zugrunde, eine Zahnbürste zu schaffen, die auch im Backenzahnbereich eine einwandfreie Anwendung der rot/weiß-Methode gestattet und insbesondere eine gleichgute Reinigung der Backenzähne im Distalbereich ermöglicht.The invention has for its object a toothbrush to create a perfect even in the molar area Application of the red / white method permitted and in particular an equally good cleaning of the molars in the Distal area enabled.

Ausgehend von der Zahnbürste gemäß dem Oberbegriff des Anspruchs 1 (WO 96/27 308) wird diese Aufgabe erfindungsgemäß dadurch gelöst, daß am Bürstenkopf auf der mit Borsten versehenen Fläche etwa 400 bis 800 Einzelborsten pro cm2 angeordnet sind und die sich aus der freien Länge der Einzelborsten und der Dicke des Bürstenkopfs ergebende Bauhöhe der Zahnbürste zwischen 6,5 und 11mm beträgt.Starting from the toothbrush according to the preamble of claim 1 (WO 96/27 308), this object is achieved according to the invention in that about 400 to 800 individual bristles per cm 2 are arranged on the brush head on the area provided with bristles and which result from the free length of the individual bristles and the thickness of the brush head, the overall height of the toothbrush is between 6.5 and 11 mm.

Die erfindungsgemäß ausgebildete Zahnbürste zeichnet sich zunächst durch eine äußerst geringe Bauhöhe, die aus freier Borstenlänge und Dicke des Bürstenkopfs gebildet ist, aus. Sie beträgt zwischen 6,5 und 11mm, während sie bei herkömmlichen Zahnbürsten bis zu 20mm reicht. Aufgrund dieser flachen Bauweise ist auch der Distalbereich der Backenzähne problemlos zu reinigen, kann dort die rot/weiß-Methode angewandt werden und kann der Andruck ausschließlich durch den Benutzer bestimmt werden, da die Wangeninnenseite selbst keinen Druck mehr auf die Zahnbürste ausübt. Durch die weiterhin vorgesehene Anzahl der auf geringem Abstand stehenden Einzelborsten läßt sich die Biegesteifigkeit trotz der geringeren Länge der Einzelborsten in gewünschtem Maß einstellen bzw. benutzerspezifisch abstufen.The toothbrush designed according to the invention stands out initially due to an extremely low overall height free bristle length and thickness of the brush head formed is out. It is between 6.5 and 11mm while it with conventional toothbrushes up to 20mm is sufficient. by virtue of This flat design is also the distal area of the molars can be easily cleaned there red / white method can be applied and the proof to be determined exclusively by the user, since the No more pressure on the toothbrush on the inside of the cheek exercises. Due to the number of individual bristles standing at a short distance can be the bending stiffness despite the shorter length of the Set the individual bristles to the desired size or user-specific abstufen.

Es sind zwar bereits Flachzahnbürsten vorgeschlagen worden (DE 93 03 339 U1), indem bei einer herkömmlichen Bürste mit Bündeln lediglich die Borstenlänge verkürzt wird. Dadurch erhöht sich aber bei den herkömmlichen Zahnbürsten mit Borstenbündeln die Steifigkeit, was bei diesem Stand der Technik ausdrücklich angestrebt ist, in dem eine bessere mechanische Reibewirkung erreicht werden soll. Gerade dies ist aber aus zahnmedizinischen Gründen unerwünscht.Flat toothbrushes have already been proposed been (DE 93 03 339 U1) by a conventional Brush with bundles only shortens the bristle length becomes. However, this increases the conventional Toothbrushes with bundles of bristles increase the stiffness this state of the art is expressly sought in which a better mechanical rubbing effect can be achieved should. But this is precisely for dental reasons undesirable.

Zu den gleichen negativen Effekten führt eine andere bekannte Ausführung (EP 0 060 592), bei dem die einzelnen Borsten eng aneinander anliegend in eine rahmenartige Konstruktion des Bürstenkopfs eingespannt sind. Hier wird die Biegesteifigkeit noch höher als bei Bürsten mit Borstenbündeln, da die Einzelborsten sich einander auf ihrer gesamten Länge abstützen.Another leads to the same negative effects known version (EP 0 060 592), in which the individual Bristles close together in a frame-like Construction of the brush head are clamped. Here will the bending stiffness is even higher than with brushes Bristle bundles, since the individual bristles face each other support their entire length.

Bei einer weiterhin bekannten Zahnbürste (DE 296 00 139 U1) sind am Bürstenkopf neben üblichen Borstenbündeln Mikrofasern aufgebracht. Diese Mikrofasern sind biegeschlaff und dadurch extrem weich, so daß sie keine mechanische Wirkung auf den Zahnbelag ausüben können. Sie haben allenfalls eine polierende Wirkung. Auch lassen sich solche Mikrofasern aufgrund ihres extrem kleinen Durchmessers nicht direkt am Bürstenkopf befestigen.In a toothbrush that is still known (DE 296 00 139 U1) are on the brush head next to usual bristle bundles Microfiber applied. These microfibers are limp and therefore extremely soft so that they are not can have a mechanical effect on the plaque. she have at most a polishing effect. Let also such microfibers due to their extremely small size Do not attach the diameter directly to the brush head.

Die erfindungsgemäße Ausbildung ist sowohl für manuell geführte Zahnbürsten, die also einen am Bürstenkopf ansetzenden Griff aufweisen, als auch für elektrisch betriebene Zahnbürsten, bei denen der Bürstenkopf auf einen Antrieb aufgesteckt ist, mit gleichen Wirkungen einsetzbar.The training according to the invention is both for manual guided toothbrushes, so one on the brush head have attached handle, as well as for electrical powered toothbrushes where the brush head is on a drive is attached with the same effects used.

Vorzugsweise liegt die freie Länge der Einzelborsten zwischen 5 und 9,5mm und die Dicke des Bürstenkopfs zwischen 1,5 und 3,0mm. Die geringe Dicke des Bürstenkopfs ist insbesondere dadurch möglich, daß die Einzelborsten zur Erzielung der notwendigen Auszugsfestigkeit auf einer nur geringen Länge im Kunststoff des Bürstenkopfs eingebettet sein müssen.The free length of the individual bristles is preferably between 5 and 9.5mm and the thickness of the brush head between 1.5 and 3.0mm. The small thickness of the brush head is particularly possible in that the individual bristles to achieve the necessary pull-out strength only a short length in the plastic of the brush head must be embedded.

Die erfindungsgemäße Ausbildung läßt es ferner zu, der wirksamen Bürstfläche eine Topographie zu verleihen, in dem die freien Enden der Einzelborsten auf einer stetig oder unstetig gekrümmten Hüllfläche liegen, deren Abstand von der Oberfläche des Bürstenkopfs um bis zu 3mm variiert.The training according to the invention also allows the to give effective brushing surface a topography, in the free ends of the individual bristles on a steady or discontinuously curved envelope surface, their distance varies from the surface of the brush head by up to 3mm.

Durch diese Topographie ist sichergestellt, daß nicht nur die Zahnflächen, sondern auch der Interdentalraum von den Borsten erreicht und gereinigt wird. Im Bereich des Zahnfleischs ergeben sich besondere Massagewirkungen dadurch, daß die längeren Borsten beim Andruck ausgelenkt, also mit dem Borstenmantel wirksam werden und zu einer Art Streichmassage führen, während die kürzeren Borsten mit ihren Enden wirksam sind. This topography ensures that not only the tooth surfaces, but also the interdental space of the Bristles are reached and cleaned. In the area of Gums have special massage effects in that the longer bristles deflect when pressed, So take effect with the bristle coat and too perform a kind of stroking massage, while the shorter ones Bristles are effective with their ends.

Eine weitere Variationsmöglichkeit für die Biegesteifigkeit ergibt sich dadurch, daß der Durchmesser der Einzelborsten zwischen 0,095 und 0,225mm liegt und der gewählte effektive Durchmesser um so kleiner ist, je kleiner die freie Länge der Einzelborsten ist.Another variation option for bending stiffness results from the fact that the diameter of the individual bristles is between 0.095 and 0.225mm and the selected one effective diameter, the smaller the smaller the free length of the individual bristles.

Hierbei ist vorzugsweise vorgesehen, daß bei einer freien Länge der Einzelborsten von 5 bis 7mm deren Durchmesser von 0,095 und 0,175 und bei einer freien Länge von 7 bis 9,5mm deren Durchmesser zwischen 0,125 und 0,225mm liegt.It is preferably provided that in a free Length of the individual bristles from 5 to 7mm their diameter of 0.095 and 0.175 and with a free length of 7 to 9.5mm whose diameter is between 0.125 and 0.225mm.

Eine bevorzugte Ausführung der erfindungsgemäßen Zahnbürste zeichnet sich dadurch aus, daß die Bauhöhe der Zahnbürste ca. 8,5mm beträgt mit einer freien Länge der Einzelborsten von 7mm und einer Dicke des Bürstenkopfs von 1,5mm, wobei ca. 600 Borsten pro cm2 vorgesehen sind.A preferred embodiment of the toothbrush according to the invention is characterized in that the overall height of the toothbrush is approximately 8.5 mm with a free length of the individual bristles of 7 mm and a thickness of the brush head of 1.5 mm, approximately 600 bristles per cm 2 being provided ,

In einer weiterhin vorteilhaften Ausgestaltung der Erfindung ist vorgesehen, daß die Einzelborsten im Spritzgießverfahren durch Umspritzen ihrer befestigungsseitigen Enden mit dem Kunststoff des Bürstenkopfs in diesem eingebettet sind.In a further advantageous embodiment of the invention it is provided that the individual bristles in the injection molding process by overmolding their fastening side Ends with the plastic of the brush head in it are embedded.

Diese Methode der Befestigung der Einzelborsten führt einerseits bei kürzester Einbettlänge zu einer größtmöglichen Auszugsfestigkeit. Andererseits ist die einzelne Borste im Bereich ihrer Einspannung von dem Kunststoff des Bürstenkopfs fest umschlossen, so daß eine spaltfreie Oberfläche gewährleistet ist, was wiederum aus hygienischen Gründen angestrebt wird.This method of attaching the individual bristles leads on the one hand with the shortest embedding length to the greatest possible Pull-out strength. On the other hand, the individual is Bristle in the area of their clamping from the plastic of the brush head tightly enclosed, so that a gap-free Surface is guaranteed, which in turn is hygienic Reasons is sought.

Die erfindungsgemäße Ausbildung gibt ferner die Möglichkeit, daß der Bürstenkopf an seiner Borstenseite eine konvex gewölbte Oberfläche aufweist und die Einzelborsten etwa senkrecht zu der Oberfläche angeordnet sind.The training according to the invention also gives the possibility that the brush head on its bristle side has convex surface and the individual bristles are arranged approximately perpendicular to the surface.

Durch diese Ausbildung liegen die Enden der Borsten, sofern sie gleiche Länge aufweisen, auf einer entsprechend konvexen Hüllfläche. Dies ermöglicht bei der rot/weiß-Methode, bei der die Zahnbürste in der Regel leicht verschwenkt wird, einen besseren Angriff der Borstenenden. Bei herkömmlichen Bündelzahnbürsten hat man die gleiche Wirkung dadurch zu erreichen versucht, daß die Bündel nur in der Längsmittelachse des Bürstenkopfs senkrecht zur Oberfläche und nach außen hin geneigt angeordnet werden bei zugleich stärkerer Kürzung der außenliegenden Bündel. Durch die Neigungslage wirkt aber die Bürst- und Reinigungswirkung der einzelnen Bündel unterschiedlich. Zudem besteht durch die schrägstehenden Borsten die Gefahr, daß sie sich gegen die Putzrichtung umlegen und dann wie Spieße wirken. Die konvexe Ausbildung des Bürstenkopfs im Rahmen der Erfindung ist ohne nennenswerte Steigerung der Bauhöhe durch die geringe Dicke des Bürstenkopfs möglich.With this design, the ends of the bristles lie if they have the same length, on a corresponding one convex envelope surface. This enables at red / white method in which the toothbrush is usually light is pivoted, a better attack of the bristle ends. With conventional bundle toothbrushes you have that tries to achieve the same effect in that the Bundle only in the longitudinal central axis of the brush head inclined perpendicular to the surface and outwards be ordered with a simultaneous reduction in the outer bundle. But due to the inclination the brushing and cleaning effect of the individual bundles differently. In addition, due to the sloping Bristle the risk that they are against the direction of cleaning flip and then look like skewers. The convex formation the brush head in the context of the invention is without appreciable increase in height due to the low Thickness of the brush head possible.

Bei dieser Ausführung kann zugleich der Rücken des Bürstenkopfs konkav gewölbt sein, so daß der Bürstenkopf über seine gesamte Länge etwa gleiche Dicke aufweist, ohne daß der Bürstenkopf durch dieses Profil bretthart wird. Bei dieser Ausführung weisen die senkrecht auf der Oberfläche stehenden Einzelborsten vorzugsweise gleiche Länge auf.In this version, the back of the brush head can also be used be concave so that the brush head has approximately the same thickness over its entire length, without the brush head sticking through this profile becomes. In this version, the point perpendicular to the Surface standing individual bristles preferably the same Length on.

Die Einbettungslänge der befestigungsseitigen Enden der Einzelborste ist vorzugsweise kleiner als das 10-fache des Durchmessers der Borste. Die Einbettungslänge liegt also bei dem o.g. Durchmesserbereich von 0,125 bis 0,225mm bei maximal 1,25 bis 2,25mm.The embedding length of the attachment-side ends of the Single bristle is preferably less than 10 times of the diameter of the bristle. The embedding length is So with the above Diameter range from 0.125 to 0.225mm at a maximum of 1.25 to 2.25mm.

Nachstehend ist die Erfindung anhand einiger in der Zeichnung wiedergegebener Ausführungsbeispiele beschrieben. In der Zeichnung zeigen:

Figur 1
eine Draufsicht auf das Borstenfeld einer Zahnbürste;
Figur 2
eine Seitenansicht der Zahnbürste gemäß Figur 1;
Figur 3
einen vergrößerten Ausschnitt eines Längsschnittes im Bereich des Bürstenkopfes;
Figur 4
eine Ansicht auf die Darstellung gemäß Figur 3 und
Figur 5
eine Querschnitt durch den Bürstenkopf in einer anderen Ausführungsform.
The invention is described below with reference to some exemplary embodiments shown in the drawing. The drawing shows:
Figure 1
a plan view of the bristle field of a toothbrush;
Figure 2
a side view of the toothbrush according to Figure 1;
Figure 3
an enlarged section of a longitudinal section in the region of the brush head;
Figure 4
a view of the representation of Figure 3 and
Figure 5
a cross section through the brush head in another embodiment.

In Figur 1 und 2 ist eine für den manuellen Gebrauch bestimmte Zahnbürste 1 gezeigt. Sie weist einen Stiel 2, einen vorzugsweisen flexiblen Hals 3 und einen Bürstenkopf 4 mit einem Borstenbesatz 5 auf. Der Borstenbesatz 5 besteht aus einzeln stehenden und mit geringem Abstand voneinander angeordneten Borsten, wie sich aus den Figuren 3 und 4 ergibt. Die Einzelborsten 6 sind mit ihren Enden 7 in dem Bürstenkopf 4 verankert. Beispielsweise weisen die Einzelborsten an ihren Enden 7 durch Aufschmelzen derselben erhaltene Verdickungen 8 auf, mittels der sie durch Umspritzen mit dem Kunststoff des Bürstenkopfs 4 in diesem verankert sind.In Figures 1 and 2 is one for manual use certain toothbrush 1 shown. It has a stem 2, a preferably flexible neck 3 and a brush head 4 with 5 bristles. The bristle trim 5 consists of individually standing and with a small distance bristles arranged from each other, as can be seen from the figures 3 and 4 results. The individual bristles 6 are with their Anchored ends 7 in the brush head 4. For example have the individual bristles at their ends 7 by melting the same obtained thickenings 8, by means of by molding them with the plastic of the brush head 4 are anchored in this.

Die Borsten 6 weisen einen Durchmesser zwischen 0,095 und 0,225mm und eine freie Länge "1" von 5 bis 9,5mm auf. Der Durchmesser ist umso kleiner gewählt, je kürzer die freie Länge "1" ist. Bei praktischen Versuchen haben sich folgende Zuordnungen als vorteilhaft erwiesen: Durchmesser 0,095 bis 0,175mm bei einer freien Länge "1" von 5 bis 7mm und Durchmesser 0,125 bis 0,225mm bei einer freien Länge von 7 bis 9,5mm.The bristles 6 have a diameter between 0.095 and 0.225mm and a free length "1" from 5 to 9.5mm. The The smaller the free diameter, the smaller the diameter Length is "1". In practical trials the following assignments proved to be advantageous: diameter 0.095 to 0.175mm with a free length "1" of 5 up to 7mm and diameter 0.125 to 0.225mm at one free length from 7 to 9.5mm.

Die Gesamtbauhöhe der Zahnbürste im Bereich des Bürstenkopfs liegt zwischen 6,5 und 11mm, wobei die Dicke "d" des Bürstenkopfs zwischen 1,5 und 3,0mm liegt. Die Einbettungstiefe "a" der Einzelborsten beträgt zwischen 0,2 und 0,8mm, vorzugsweise etwa 0,4mm. Der Abstand der Einzelborsten 6 untereinander ist vorzugsweise so gewählt, daß sich auf einem Quadratzentimeter etwa 600 Borsten befinden.The overall height of the toothbrush in the area of the brush head is between 6.5 and 11mm, the thickness "d" the brush head is between 1.5 and 3.0 mm. The depth of embedding "a" of the individual bristles is between 0.2 and 0.8mm, preferably about 0.4mm. The distance of the Individual bristles 6 among one another are preferably selected that there are about 600 bristles on a square centimeter are located.

Bei dem Ausführungsbeispiel gemäß Figur 5 ist der Bürstenkopf im Querschnitt gewölbt, so daß die Enden der Einzelborsten 6 auf einer entsprechend gekrümmten Hüllfläche liegen. Diese Hüllfläche kann durch unterschiedliche Längen der Einzelborsten 6 auch gewellt oder gestuft sein. Die Einzelborsten stehen senkrecht zur Oberfläche des Bürstenkopfs 4.In the embodiment shown in Figure 5 is the brush head arched in cross section so that the ends of the Individual bristles 6 on a correspondingly curved envelope surface lie. This envelope can be different Lengths of the individual bristles 6 also corrugated or stepped his. The individual bristles are perpendicular to Surface of the brush head 4.

Claims (12)

  1. Toothbrush with a brush head made from plastic with individual standing bristles made from plastic embedded into the brush head disposed at small separations from each other, characterized in that approximately 400-800 individual bristles per cm2 are disposed on a surface of the brush head having bristles and the height of the tooth brush, comprising the free length of the individual bristles and the thickness of the brush head, assumes a value between 6.5 and 11 mm.
  2. Toothbrush according to claim 1 , characterized in that the free length of the individual bristles is between 5 and 9.5 mm and the thickness of the brush head between 1.5 and 3.0 mm.
  3. Toothbrush according to claim 1 or 2, characterized in that the free ends of the individual bristles lie on a constant or varying curved enveloping surface the separation of which from the surface of the brush head varies by up to 3 mm.
  4. Toothbrush according to any one of the claims 1 through 3, characterized in that the diameter of the individual bristles lies between 0.095 and 0.225 mm and the chosen effective diameter is smaller, the smaller the free length of the individual bristles.
  5. Toothbrush according to claim 4,-characterized in that, with a free length of the individual bristles between 5 and 7 mm, the diameter lies between 0.095 and 0.175 mm and, with a free length of 7 to 9.5 mm, the diameter lies between 0.125 and 0.225 mm.
  6. Toothbrush according to any one of the claims 1 through 5, characterized in that the height of the toothbrush is approximately 8.5 mm with a free length of the individual bristles of 7 mm and a thickness of the brush head of 1.5 mm.
  7. Toothbrush according to any one of the claims 1 through 6, characterized by approximately 600 bristles per cm2.
  8. Toothbrush according to any one of the claims 1 through 7, characterized in that the individual bristles are embedded in the plastic of the brush head using an extrusion procedure by injection molding their attachment ends with the brush head plastic.
  9. Toothbrush according to any one of the claims 1 through 3, characterized in that the brush head has a convex bulging surface at its bristle side and the individual bristles are approximately perpendicular to the surface.
  10. Toothbrush according to claim 9, characterized in that the brush head has approximately constant thickness over the entire cross section and is curved in a convex fashioned on the bristle side and in a concave manner on its back.
  11. Toothbrush according to claim 9 or 10, characterized in that the individual bristles have the same length.
  12. Toothbrush according to any one of the claims 1 through 11, characterized in that the individual bristles are embedded at their attachment ends along a length which is less than 10 times the diameter of the individual bristle.
EP98942597A 1997-08-05 1998-07-22 Toothbrush Expired - Lifetime EP1001693B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19733758A DE19733758A1 (en) 1997-08-05 1997-08-05 toothbrush
DE19733758 1997-08-05
PCT/EP1998/004603 WO1999007252A1 (en) 1997-08-05 1998-07-22 Toothbrush

Publications (2)

Publication Number Publication Date
EP1001693A1 EP1001693A1 (en) 2000-05-24
EP1001693B1 true EP1001693B1 (en) 2002-10-23

Family

ID=7837994

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98942597A Expired - Lifetime EP1001693B1 (en) 1997-08-05 1998-07-22 Toothbrush

Country Status (20)

Country Link
US (1) US6321407B1 (en)
EP (1) EP1001693B1 (en)
JP (1) JP2001513344A (en)
KR (1) KR20010022544A (en)
CN (1) CN1119098C (en)
AR (1) AR010183A1 (en)
AU (1) AU9067698A (en)
BR (1) BR9811842A (en)
CA (1) CA2298578C (en)
DE (2) DE19733758A1 (en)
EG (1) EG21491A (en)
ES (1) ES2184319T3 (en)
ID (1) ID20847A (en)
NO (1) NO20000569L (en)
PL (1) PL189603B1 (en)
RU (1) RU2196493C2 (en)
TR (1) TR200000286T2 (en)
UA (1) UA55476C2 (en)
WO (1) WO1999007252A1 (en)
ZA (1) ZA986979B (en)

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Also Published As

Publication number Publication date
PL189603B1 (en) 2005-08-31
NO20000569D0 (en) 2000-02-04
EP1001693A1 (en) 2000-05-24
KR20010022544A (en) 2001-03-15
AR010183A1 (en) 2000-05-17
AU9067698A (en) 1999-03-01
CN1119098C (en) 2003-08-27
ZA986979B (en) 1999-02-08
BR9811842A (en) 2000-08-08
JP2001513344A (en) 2001-09-04
RU2196493C2 (en) 2003-01-20
UA55476C2 (en) 2003-04-15
TR200000286T2 (en) 2000-07-21
CA2298578A1 (en) 1999-02-18
EG21491A (en) 2001-11-28
CA2298578C (en) 2007-02-20
DE19733758A1 (en) 1999-02-11
CN1265570A (en) 2000-09-06
PL338390A1 (en) 2000-10-23
WO1999007252A1 (en) 1999-02-18
ID20847A (en) 1999-03-11
DE59806063D1 (en) 2002-11-28
ES2184319T3 (en) 2003-04-01
NO20000569L (en) 2000-03-27
US6321407B1 (en) 2001-11-27

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