EP2136674B1 - Toothbrush - Google Patents
Toothbrush Download PDFInfo
- Publication number
- EP2136674B1 EP2136674B1 EP08748928.2A EP08748928A EP2136674B1 EP 2136674 B1 EP2136674 B1 EP 2136674B1 EP 08748928 A EP08748928 A EP 08748928A EP 2136674 B1 EP2136674 B1 EP 2136674B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cleaning
- section
- cleaning section
- toothbrush
- region
- Prior art date
- 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.)
- Active
Links
- 238000004140 cleaning Methods 0.000 claims description 143
- 238000007373 indentation Methods 0.000 claims description 41
- 238000005452 bending Methods 0.000 claims description 27
- 239000004033 plastic Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 11
- 229920001971 elastomer Polymers 0.000 description 6
- 239000000806 elastomer Substances 0.000 description 5
- 229920002725 thermoplastic elastomer Polymers 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- IHQKEDIOMGYHEB-UHFFFAOYSA-M sodium dimethylarsinate Chemical class [Na+].C[As](C)([O-])=O IHQKEDIOMGYHEB-UHFFFAOYSA-M 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B9/00—Arrangements of the bristles in the brush body
- A46B9/06—Arrangement of mixed bristles or tufts of bristles, e.g. wire, fibre, rubber
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B5/00—Brush bodies; Handles integral with brushware
- A46B5/002—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B5/00—Brush bodies; Handles integral with brushware
- A46B5/002—Brush bodies; Handles integral with brushware having articulations, joints or flexible portions
- A46B5/0025—Brushes with elastically deformable heads that change shape during use
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B7/00—Bristle carriers arranged in the brush body
- A46B7/06—Bristle carriers arranged in the brush body movably during use, i.e. the normal brushing action causing movement
-
- 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
- A46B9/08—Supports or guides for bristles
- A46B9/12—Non-adjustable supports
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46D—MANUFACTURE OF BRUSHES
- A46D1/00—Bristles; Selection of materials for bristles
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B2200/00—Brushes characterized by their functions, uses or applications
- A46B2200/10—For human or animal care
- A46B2200/1066—Toothbrush for cleaning the teeth or dentures
Definitions
- the present invention relates to a toothbrush with a cleaning element, which is designed as a plastic injection molded part and which has a fastening portion for attachment in the head region of the toothbrush and a cleaning section for cleaning teeth.
- Such a toothbrush is from the WO 02/38004 A1 known.
- the head region of the toothbrush here has bristle tufts and alternately to cleaning elements, which are formed from a plastic injection molded part.
- the cleaning elements are preferably made of a thermoplastic elastomer and have a uniform cross-sectional area over the longitudinal extent with respect to the cleaning section.
- WO 03/055351 A1 From the WO 03/055351 A1 is also a toothbrush with cleaning elements known, which are formed from a plastic injection molded part.
- cleaning elements as plastic injection molded parts instead of bristles usually results in a less tooth and gum-friendly use in the mouth of the user.
- At least one indentation is provided in the region of the cleaning section of the cleaning element, so that the cleaning section has an increased bending flexibility at this point.
- the indentation is comparable to a Sollknick- or predetermined bending point before a geometric shape, which leads to a preferred bending of the cleaning element around the indentation around, which means with a preferred bending also increased bending relative to adjacent sections without indentation.
- the indentation predetermines a certain bending direction, so that an optimized bending flexibility of the upper end portion of the cleaning element is given relative to the arrangement of the cleaning element in the toothbrush head and in knowledge of the preferred usage behavior of a user of the toothbrush.
- the recess is formed transversely to the toothbrush longitudinal axis, so that an increased bending flexibility is given by the indentation approximately in the direction of the longitudinal axis of the toothbrush.
- a plurality of indentations are provided, so that the cleaning portion having these indentations has an increased bending flexibility in two directions.
- the indentations are arranged on opposite sides of the cleaning section, so that the two preferred bending directions lie in one plane.
- the plane of the bending directions is furthermore preferably approximately parallel to the longitudinal axis of the toothbrush or to the longitudinal axis of the toothbrush head.
- the indentations have all indentation axes or bending axes around the indentation, which are arranged substantially perpendicular to the longitudinal axis of the toothbrush head.
- the cleaning section has a wave-shaped area.
- a plurality of recesses are successively provided on both sides of the cleaning member, so that the bending flexibility is further increased.
- the at least one indentation or the wave-shaped region is arranged from the upper end to one tenth, in particular to three twentieths or to one fifth or further away over the longitudinal extension of the cleaning element seen.
- the cleaning section has a narrow side and a broad side, wherein the indentation is formed and arranged such that the bending flexibility is increased over the broad side.
- the predetermined by the basic geometry bendability of the cleaning element is reinforced with a broader broadside and a narrower narrow side by the indentation, because this is increased to increase the bending flexibility on the already better bendable side of the broadside.
- the ratio of broad side to narrow side is between 2: 1 and 20: 1.
- the cleaning element is formed from only one plastic component. It is therefore formed both the cleaning portion and the attachment portion of the same plastic component. This leads to a simplified manufacturability.
- This aspect may also constitute another invention independently of the other aspects or in combination with them.
- the attachment portion and the head portion of the toothbrush is designed such that the cleaning element with a force of> 8 Newton, in particular> 12 Newton, and in particular> 15 Newton from the head area is solvable.
- the attachment portion is formed as a snap connection, so that the cleaning element can be mounted by snapping into the head region of the toothbrush.
- this attachment portion or the snap connection is designed such that by attaching a tensile force on the cleaning element away from the toothbrush head, the cleaning element from a certain threshold force - as stated above - is solvable.
- the narrow side is straight and the broad sides of the cleaning section on both sides with at least one, preferably two or more, indentations provided. Otherwise there is no or little bending flexibility on the narrow side and the flexural flexibility on the broad side is further increased by the indentations.
- the cleaning section in the region of the indentations on a material width which is equal to or smaller than the material width of the cleaning section in the region of the attachment portion in particular in the bending direction to the indentations.
- the cleaning section is tapered from the attachment section to the upper end in the material width, in particular with respect to the narrow side width.
- Each broad side of the cleaning section has at the wavy area alternately indentations and bulges, with a recess on a broad side the other side of the broad side opposite and formed at the same height as a bulge.
- Fig. 1 shows a perspective view of a toothbrush with a head portion 1 and a neck portion 2.
- the grip area is in Fig. 1 not shown and joins, as known from the prior art, to the neck region 2 at.
- the cleaning elements 4, 14, 24 are principally used in purely manual toothbrushes, in manual toothbrushes with electrically driven eccentric mass, which causes the tooth cleaning field to vibrate, in toothbrush toothbrushes for electric toothbrushes and in all other tooth-cleaning devices.
- the brush head 1 follows Fig. 1 a tooth cleaning area, which has both bristle tufts 3 and a plurality of cleaning elements 4.
- the bristle tufts 3 and the cleaning elements 4 are arranged approximately offset relative to one another via the longitudinal axis of the brush head, so that in the present case eight cleaning elements are arranged in the brush head.
- the cleaning elements 4 are secured in corresponding openings of the head area 1 via a snap-in or snap connection. Another attachment, for example, with mechanical cold deformation or with heat such. B. by welding or hot caulking is also possible.
- FIGS. 2 and 3 show a cleaning element from two different sides according to an embodiment of the invention.
- the cleaning element is shown unassembled without the head portion of the toothbrush.
- the cleaning element preferably consists of a single plastic component, which is in particular a silicone material, a rubber mixture, an elastomer, a polypropylene or a thermoplastic elastomer (TPE).
- TPE thermoplastic elastomer
- the cleaning element is preferably produced exclusively from TPE by the injection molding process.
- As PP comes as a starting material in question.
- the preferred Shore A hardness which applies throughout to the entire cleaning element, is between 75 SHA and 90 SHA or has a Shore D hardness of 30 SHD to 60 SHD.
- the cleaning element 4 has a cleaning section A and a fastening section B.
- the cleaning section A is designed as a substantially rectangular fin in section.
- the cleaning section A is further formed so as to taper in thickness from a lower end portion adjacent to the fixing portion B to an upper end 6.
- the cleaning section A has a wave-shaped region n, which is provided in each case with two recesses 7 on both sides, which are offset in position relative to the longitudinal extent to each other.
- the indentations 7 extend over the entire width of the fin of the cleaning section, so that at a force acting on the upper end 6 of the cleaning section A is given an increased bending flexibility in the directions 8 and 9.
- the wave-shaped portion n is formed in the upper half of the cleaning portion A, depending on the applied force at the upper end 6 and the side edges of the cleaning portion A, only the upper end portion of the cleaning portion A bends initially.
- two each other at the same height of the longitudinal extension arranged indentations are possible.
- the increased bending flexibility in the region of the cleaning section A is achieved with indentations with other geometric shapes in the form of recesses, notches, grooves, etc. or with softer material sections relative to the immediately adjacent materials of the cleaning section A.
- the cleaning element 4 also has the attachment portion B, which is provided with a snap device 10.
- a recess 11 of the locking or snap portion 10 of the locking projection 12 during assembly in the openings 5 of the head portion 1 can be easily deformed by pressing.
- Fig. 4 shows a sectional view of the cleaning element 4 along the line AA in Fig. 2 , Like in the Fig. 4 shown, in the recess 11 of the snap connection, an inner wall portion 13 is provided by the variation of the wall thickness, the pull-out force is adjustable with which the cleaning element 4 from the opening 5 is detachable.
- This pull-out force (along the longitudinal axis of the cleaning element in the direction of the upper end 6) is preferably at least 10 N, 12 N or 15 N.
- FIGS. 5 and 6 show front and side views of the cleaning element in the snapped-in state of an opening 5 of the head area 1.
- the cleaning element 14 of FIGS. 5 and 6 corresponds largely to the cleaning element 4 according to the embodiment of the invention, with the exception, for example, that no wave-shaped portion n is formed in the cleaning section A.
- the cleaning section A goes from the FIGS. 5 and 6 Particularly well, that the cleaning portion A is provided with an approximately lower half C adjacent to the fixing portion B with a constant thickness and an upper portion D, which tapers in thickness to the upper end 6. All illustrated embodiments of the cleaning elements have either a cleaning section A.
- the opening 5 of the head portion 1 has a first narrowing from top to bottom portion 17 and a subsequently widening portion 18. After the snap lugs 12 have overcome the narrowest point 19 of the opening 5 during assembly, the cleaning element is mounted in the head area 1.
- the proposed embodiment of the attachment area B leads to a loose mounting of the cleaning element in the breakthrough game, so that both a translational movement by the distance 16, which corresponds to a few millimeters, in the axial direction of the cleaning element, as well as a pivoting movement about the pivot angle 15 is possible ,
- the pivoting angles 15 are preferably between ⁇ 10 ° and ⁇ 20 °.
- the snap device in the side view Fig. 3 approximately cylindrical or according to the side view Fig. 6 be provided with second snap-action lugs 23 in a range twisted by the snap lugs 12, for example by 90 degrees. This increases the necessary pull-out force to release the cleaning elements from the openings. Also the narrowing 19 in Fig. 5 and the narrowing in the second direction Fig. 6 in the breakthrough leads to a poorer solubility of the cleaning element.
- the basic pivoting of the cleaning element by the angle 15 leads to a first evasive movement and the indentations 7 to a further flexibility of the cleaning section during its sliding along the tooth flanks and penetration into the interdental space.
- the pivotability 15 and the bendability around the indentation 7 are given to the same side.
- the cleaning element in particular according to the first embodiment according to the FIGS. 2 to 4 a flexibility (in which the mounting portion B is firmly clamped and the bending force is applied laterally at the top) from 30 mN to 60 mN (at 20 ° C) on. If this lateral bending force in the middle of the cleaning section A is likewise applied to the broad side 22 and the remaining parameters remain the same, the present geometry is a Minimum bending force of 140 mN to 200 mN, in particular 150 mN to 190 mN is required to bend the fin over an applied force at the center.
- FIGS. 7 and 8 show an embodiment of a cleaning element 24 in two different side views, this embodiment is not included in the invention, but illustrates individual features that are associated with the invention.
- the cleaning member 24 differs from the other two embodiments substantially in that no wave-shaped portion n in the cleaning portion A but in the tapered portion D, which extends approximately over the upper half of the cleaning portion A, a cleaning pad 20 is formed.
- the cleaning pad 20 may be formed in the same component as the entire cleaning element or in an even softer elastomer over the remaining portions of the cleaning element.
- the fastening section B is formed from a hard plastic or from a mixture of a hard plastic and an elastomer.
- the cleaning section A can then also consist of the same plastic component as the section B or be formed of a softer material, in particular an elastomer.
Landscapes
- Brushes (AREA)
Description
Die vorliegende Erfindung betrifft eine Zahnbürste mit einem Reinigungselement, dass als Kunststoffspritzgussteil ausgebildet ist und das einen Befestigungsabschnitt zur Befestigung im Kopfbereich der Zahnbürste und einem Reinigungsabschnitt zur Zahnreinigung aufweist.The present invention relates to a toothbrush with a cleaning element, which is designed as a plastic injection molded part and which has a fastening portion for attachment in the head region of the toothbrush and a cleaning section for cleaning teeth.
Eine derartige Zahnbürste ist aus der
Aus der
Es ist eine Aufgabe der vorliegenden Erfindung, eine Zahnbürste der eingangs genannten Art bereitzustellen, die eine gute Schonung des Zahnfleisches bietet, die neben der Zahnoberfläche auch den Interdentalraum besonders gut reinigt und die kostengünstig herstellbar ist.It is an object of the present invention to provide a toothbrush of the type mentioned, which provides a good protection of the gums, which also cleans the interdental space particularly well in addition to the tooth surface and which is inexpensive to produce.
Diese Aufgabe wird durch eine Zahnbürste mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a toothbrush having the features of
Weitere vorteilhafte Ausbildungen der Erfindungen sind in den Unteransprüchen beschrieben.Further advantageous embodiments of the inventions are described in the subclaims.
In vorteilhafter Ausbildung der Zahnbürste ist im Bereich des Reinigungsabschnittes des Reinigungselementes zumindest eine Einbuchtung vorgesehen, so dass der Reinigungsabschnitt an dieser Stelle eine erhöhte Biegeflexibilität aufweist. Soweit die Materialparameter über die Längserstreckung des Reinigungselementes konstant bleiben oder der Biegeflexibilität nicht entgegenwirken, ist somit durch die Einbuchtung eine erhöhte Biegeflexibilität gegenüber einem Abschnitt ohne Einbuchtung gegeben. Die Einbuchtung gibt dabei vergleichbar einer Sollknick- oder Sollbiegestelle eine geometrische Formgebung vor, die zu einer bevorzugten Verbiegung des Reinigungselementes um die Einbuchtung herum führt, wobei mit einer bevorzugten Verbiegung auch eine erhöhte Verbiegung gegenüber benachbarten Abschnitten ohne Einbuchtung bedeutet. Daneben gibt die Einbuchtung eine bestimmte Biegerichtung vor, so dass relativ zur Anordnung des Reinigungselementes im Zahnbürstenkopf und in Kenntnis des bevorzugten Benutzungsverhaltens eines Nutzers der Zahnbürste eine optimierte Biegeflexibilität des oberen Endabschnittes des Reinigungselementes gegeben ist. Bevorzugt ist die Einbuchtung quer zur Zahnbürstenlängsachse ausgebildet, so dass eine erhöhte Biegeflexibilität durch die Einbuchtung etwa in Richtung der Längsachse der Zahnbürste gegeben ist. Es hat sich gezeigt, dass die Einbuchtung einerseits zu einer schonenderen Zahnreinigung durch das Reinigungselement entlang der Zahnflanke und am Zahnfleischsaum führt und anderseits eine bessere Interdentalreinigung gegeben ist, weil das Reinigungselement durch die Einbuchtung im Reinigungsabschnitt sich bei einem Entlangwischen an der äußeren Zahnflanke zunächst leichter verbiegt und dem durch die Zahnflanke gegebenen Vorsprung eine Flexibilität bietet und andererseits bei Erreichen eines Interdentalraumes insbesondere der obere Endabschnitt des Reinigungselementes durch die Einbuchtung wie durch eine Federkraft in eine in der Regel längsgestreckte Neutralstellung zurückspringt, so dass eine tiefe Interdentalreinigung ermöglicht ist. Die aus dem Stand der Technik bekannte Verschwenkbarkeit des Reinigungselementes um den Befestigungsabschnitt im Kopfbereich des Reinigungselementes herum führt noch nicht im gewünschten Maße zu diesem Effekt.In an advantageous embodiment of the toothbrush, at least one indentation is provided in the region of the cleaning section of the cleaning element, so that the cleaning section has an increased bending flexibility at this point. As far as the Material parameters remain constant over the longitudinal extent of the cleaning element or do not counteract the bending flexibility, is thus given by the indentation increased bending flexibility compared to a section without indentation. The indentation is comparable to a Sollknick- or predetermined bending point before a geometric shape, which leads to a preferred bending of the cleaning element around the indentation around, which means with a preferred bending also increased bending relative to adjacent sections without indentation. In addition, the indentation predetermines a certain bending direction, so that an optimized bending flexibility of the upper end portion of the cleaning element is given relative to the arrangement of the cleaning element in the toothbrush head and in knowledge of the preferred usage behavior of a user of the toothbrush. Preferably, the recess is formed transversely to the toothbrush longitudinal axis, so that an increased bending flexibility is given by the indentation approximately in the direction of the longitudinal axis of the toothbrush. It has been found that the indentation on the one hand leads to a gentler tooth cleaning by the cleaning element along the tooth flank and the gingival margin and on the other hand a better interdental cleaning is given because the cleaning element by the indentation in the cleaning section initially bends easier when wiping on the outer tooth flank and the given by the tooth flank projection offers flexibility and on the other hand, when reaching an interdental space, in particular the upper end portion of the cleaning element by the indentation as by a spring force in a generally elongated neutral position springs back, so that a deep interdental cleaning is possible. The well-known from the prior art pivoting of the cleaning element to the attachment portion in the head region of the cleaning element around does not lead to the desired extent to this effect.
Am Reinigungsabschnitt des Reinigungselementes sind mehrere Einbuchtungen vorgesehen, so dass der Reinigungsabschnitt mit diesen Einbuchtungen eine erhöhte Biegeflexibilität in zwei Richtungen aufweist. Die Einbuchtungen sind auf einander gegenüberliegenden Seiten des Reinigungsabschnittes angeordnet, so dass die beiden bevorzugten Biegerichtungen in einer Ebene liegen. Die Ebene der Biegerichtungen ist weiterhin bevorzugt etwa parallel zur Längsachse der Zahnbürste bzw. zur Längsachse des Zahnbürstenkopfes. Die Einbuchtungen weisen alle Einbuchtungsachsen bzw. Biegeachsen um die Einbuchtung herum auf, die im Wesentlichen senkrecht zur Längsachse des Zahnbürstenkopfes angeordnet sind. Somit ist eine ausgerichtet auf das Nutzerverhalten optimierte Verbiegbarkeit des Reinigungsabschnittes bereitgestellt und die Penetration in den Interdentalraum optimiert.At the cleaning portion of the cleaning element a plurality of indentations are provided, so that the cleaning portion having these indentations has an increased bending flexibility in two directions. The indentations are arranged on opposite sides of the cleaning section, so that the two preferred bending directions lie in one plane. The plane of the bending directions is furthermore preferably approximately parallel to the longitudinal axis of the toothbrush or to the longitudinal axis of the toothbrush head. The indentations have all indentation axes or bending axes around the indentation, which are arranged substantially perpendicular to the longitudinal axis of the toothbrush head. Thus, one is geared to the User behavior optimized bendability of the cleaning section provided and optimized the penetration into the interdental space.
Der Reinigungsabschnitt weist einen wellenförmigen Bereich auf. Somit sind mehrere Einbuchtungen nacheinander auf beiden Seiten des Reinigungselementes bereitgestellt, so dass die Biegeflexibilität weiter erhöht ist.The cleaning section has a wave-shaped area. Thus, a plurality of recesses are successively provided on both sides of the cleaning member, so that the bending flexibility is further increased.
Der wellenförmige Bereich der Einbuchtungen ist zwischen dem oberen Ende, der Spitze des Reinigungselementes und den darauf folgenden zwei Dritteln der Längserstreckung des Reinigungsabschnittes angeordnet. Damit ist der wellenförmige Bereich oder alle Einbuchtungen in den oberen zwei Dritteln über die Längserstreckung gesehen angeordnet. Bevorzugt ist zumindest eine Einbuchtung vorgesehen, die in einem Abschnitt zwischen dem oberen Ende des Reinigungsabschnittes und der Hälfte der Länge der Längserstreckung des Reinigungsabschnittes angeordnet ist. Es hat sich gezeigt, dass dadurch einerseits eine gute Reinigungswirkung an der Zahnflanke und andererseits eine gute Penetration in den Interdentalraum gegeben ist.The wave-shaped portion of the recesses is arranged between the upper end, the tip of the cleaning element and the subsequent two-thirds of the longitudinal extension of the cleaning section. Thus, the undulating region or all indentations in the upper two-thirds is seen over the longitudinal extent. Preferably, at least one indentation is provided, which is arranged in a section between the upper end of the cleaning section and half the length of the longitudinal extension of the cleaning section. It has been shown that on the one hand a good cleaning effect on the tooth flank and on the other hand a good penetration into the interdental space is given.
In weiterer vorteilhafter Ausbildung ist die zumindest eine Einbuchtung oder der wellenförmige Bereich vom oberen Ende nach einem Zehntel, insbesondere nach drei Zwanzigstel oder nach einem Fünftel oder im weiteren Verlauf weiter entfernt über die Längserstreckung des Reinigungselementes gesehen angeordnet. Der vorangegangene Absatz definierte somit einen bevorzugten maximalen Tiefpunkt der Einbuchtung gesehen vom oberen Ende des Reinigungselementes aus und mit diesem Absatz wird ein bevorzugter nächstliegender Ort zum oberen Ende des Reinigungsabschnittes definiert.In a further advantageous embodiment, the at least one indentation or the wave-shaped region is arranged from the upper end to one tenth, in particular to three twentieths or to one fifth or further away over the longitudinal extension of the cleaning element seen. The preceding paragraph thus defined a preferred maximum low point of the indentation as seen from the upper end of the cleaning element and with this paragraph a preferred nearest location to the upper end of the cleaning section is defined.
Der Reinigungsabschnitt weist eine Schmalseite und eine Breitseite auf, wobei die Einbuchtung derart ausgebildet und angeordnet ist, dass die Biegeflexibilität über die Breitseite erhöht ist. Dadurch wird die durch die Grundgeometrie vorgegebene Verbiegbarkeit des Reinigungselementes mit einer breiteren Breitseite und einer schmaleren Schmalseite durch die Einbuchtung verstärkt, weil diese zur Erhöhung der Biegeflexibilität über die ohnehin besser verbiegliche Seite der Breitseite erhöht ist. In vorteilhafter Weiterbildung ist das Verhältnis von Breitseite zu Schmalseite zwischen 2:1 und 20:1. Dabei kann das Reinigungselement und insbesondere dessen Reinigungsabschnitt in einem Fußbereich benachbart zum Befestigungsabschnitt Breitseite zu Schmalseite Verhältnis von 2:1 bis 5:1 aufweisen und im oberen Endbereich ein solches Verhältnis von 4:1 bis 20:1 aufweisen, so dass der Reinigungsabschnitt über die Längserstreckung bis zum oberen Ende verjüngend ausgebildet ist.The cleaning section has a narrow side and a broad side, wherein the indentation is formed and arranged such that the bending flexibility is increased over the broad side. As a result, the predetermined by the basic geometry bendability of the cleaning element is reinforced with a broader broadside and a narrower narrow side by the indentation, because this is increased to increase the bending flexibility on the already better bendable side of the broadside. In an advantageous embodiment, the ratio of broad side to narrow side is between 2: 1 and 20: 1. In this case, the cleaning element and in particular its cleaning section in a foot region adjacent to the attachment portion wide side to narrow side ratio of 2: 1 to 5: 1 and in the upper end region such Ratio of 4: 1 to 20: 1, so that the cleaning section is formed over the longitudinal extent to the upper end tapered.
In vorteilhafter Weiterbildung ist das Reinigungselement aus nur einer Kunststoffkomponente ausgebildet. Es ist also sowohl der Reinigungsabschnitt als auch der Befestigungsabschnitt aus der gleichen Kunststoffkomponente ausgebildet. Dies führt zu einer vereinfachten Herstellbarkeit. Dieser Aspekt kann auch unabhängig von den anderen Aspekten oder mit diesen in Kombination eine weitere Erfindung bilden.In an advantageous embodiment, the cleaning element is formed from only one plastic component. It is therefore formed both the cleaning portion and the attachment portion of the same plastic component. This leads to a simplified manufacturability. This aspect may also constitute another invention independently of the other aspects or in combination with them.
In vorteilhafter Weiterbildung der Erfindung ist der Befestigungsabschnitt und der Kopfbereich der Zahnbürste derart ausgebildet, dass das Reinigungselement nur mit einer Kraft von > 8 Newton, insbesondere > 12 Newton, und insbesondere > 15 Newton aus dem Kopfbereich lösbar ist. Beispielsweise ist der Befestigungsabschnitt als eine Schnappverbindung ausgebildet, so dass das Reinigungselement durch Einschnappen in den Kopfbereich der Zahnbürste montierbar ist. Dabei ist dieser Befestigungsabschnitt bzw. die Schnappverbindung derart ausgebildet, dass durch Anbringen einer Zugkraft am Reinigungselement vom Zahnbürstenkopf weg, das Reinigungselement ab einer bestimmten Schwellkraft - wie oben angegeben - lösbar ist.In an advantageous embodiment of the invention, the attachment portion and the head portion of the toothbrush is designed such that the cleaning element with a force of> 8 Newton, in particular> 12 Newton, and in particular> 15 Newton from the head area is solvable. For example, the attachment portion is formed as a snap connection, so that the cleaning element can be mounted by snapping into the head region of the toothbrush. In this case, this attachment portion or the snap connection is designed such that by attaching a tensile force on the cleaning element away from the toothbrush head, the cleaning element from a certain threshold force - as stated above - is solvable.
In vorteilhafter Weiterbildung der Erfindung ist die Schmalseite gerade und die Breitseiten des Reinigungsabschnittes beiderseits mit zumindest einer, vorzugsweise je zwei oder mehr, Einbuchtungen versehen. Sonst ist über die Schmalseite keine oder eine geringe Biegeflexibilität gegeben und die Biegeflexibilität an der Breitseite durch die Einbuchtungen nochmals erhöht.In an advantageous embodiment of the invention, the narrow side is straight and the broad sides of the cleaning section on both sides with at least one, preferably two or more, indentations provided. Otherwise there is no or little bending flexibility on the narrow side and the flexural flexibility on the broad side is further increased by the indentations.
In vorteilhafter Weiterbildung der Erfindung weist der Reinigungsabschnitt im Bereich der Einbuchtungen eine Materialbreite auf, die insbesondere in Biegerichtung um die Einbuchtungen gleich oder kleiner ist als die Materialbreite des Reinigungsabschnittes im Bereich zum Befestigungsabschnitt hin.In an advantageous embodiment of the invention, the cleaning section in the region of the indentations on a material width, which is equal to or smaller than the material width of the cleaning section in the region of the attachment portion in particular in the bending direction to the indentations.
Der Reinigungsabschnitt ist vom Befestigungsabschnitt zum oberen Ende hin in der Materialbreite, insbesondere bezüglich der Schmalseitenbreite, verjüngend ausgebildet.The cleaning section is tapered from the attachment section to the upper end in the material width, in particular with respect to the narrow side width.
Jede Breitseite des Reinigungsabschnittes weist am wellenförmigen Bereich abwechselnd Einbuchtungen und Ausbuchtungen auf, wobei eine Einbuchtung auf einer Breitseite auf der anderen Seite der Breitseite gegenüberliegend und auf gleicher Höhe als Ausbuchtung ausgebildet ist.Each broad side of the cleaning section has at the wavy area alternately indentations and bulges, with a recess on a broad side the other side of the broad side opposite and formed at the same height as a bulge.
Weitere Ziele, Merkmale sowie vorteilhafte Anwendungsmöglichkeiten der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung von Ausführungsbeispielen anhand der Zeichnungen. Dabei bilden sämtlichen beschriebenen und/oder bildlich dargestellten Merkmale für sich oder in beliebiger Kombination den Gegenstand der vorliegenden Erfindung, auch unabhängig von den Patentansprüchen oder deren Rückbeziehung.Other objects, features and advantageous applications of the present invention will become apparent from the following description of exemplary embodiments with reference to the drawings. All described and / or illustrated features alone or in any combination form the subject matter of the present invention, also independent of the claims or their dependency.
Es zeigen:
- Fig. 1
- eine perspektivische Ansicht einer Zahnbürste mit Reinigungselementen nach der Erfindung,
- Fig. 2
- eine Vorderansicht einer ersten Ausführungsform des Reinigungselementes nach
Fig. 1 , - Fig. 3
- eine Seitenansicht des Reinigungselementes nach
Fig. 2 , - Fig. 4
- eine Längsschnittdarstellung entlang der Linie A-A in
Fig. 2 der ersten Ausführungsform des Reinigungselementes, - Fig. 5
- eine Vorderansicht einer Ausführungsform eines Reinigungselementes befestigt im Kopfbereich einer Zahnbürste, wobei diese Ausführungsform nicht von der Erfindung umfasst ist, aber einzelne Merkmale zeigt, die der Erfindung zugehörig sind,
- Fig. 6
- eine Seitenansicht des Reinigungselementes nach
Fig. 5 , - Fig. 7
- eine Vorderansicht einer weiteren Ausführungsform eines Reinigungselementes, wobei diese Ausführungsform nicht von der Erfindung umfasst ist, aber einzelne Merkmale zeigt, die der Erfindung zugehörig sind, und
- Fig. 8
- eine Seitenansicht des Reinigungselementes nach
Fig. 7
- Fig. 1
- a perspective view of a toothbrush with cleaning elements according to the invention,
- Fig. 2
- a front view of a first embodiment of the cleaning element according to
Fig. 1 . - Fig. 3
- a side view of the cleaning element after
Fig. 2 . - Fig. 4
- a longitudinal sectional view along the line AA in
Fig. 2 the first embodiment of the cleaning element, - Fig. 5
- a front view of an embodiment of a cleaning element attached in the head portion of a toothbrush, this embodiment is not included in the invention, but shows individual features of the invention,
- Fig. 6
- a side view of the cleaning element after
Fig. 5 . - Fig. 7
- a front view of another embodiment of a cleaning element, this embodiment is not included in the invention, but shows individual features that are associated with the invention, and
- Fig. 8
- a side view of the cleaning element after
Fig. 7
Die
Das Reinigungselement 4 weist ferner den Befestigungsabschnitt B auf, der mit einer Rast- bzw. Schnappeinrichtung 10 versehen ist. Durch eine Aussparung 11 des Rast- bzw. Schnappabschnittes 10 kann der Rastvorsprung 12 bei der Montage in die Durchbrüche 5 des Kopfbereiches 1 durch Eindrücken leichter verformt werden.The
Die
Wie aus einem Vergleich der
Da die vorgeschlagenen Befestigungen des Reinigungselementes für alle Ausführungsformen nach den
Vorzugsweise weist das Reinigungselement insbesondere nach der ersten Ausführungsform nach den
Die
In einer weiteren Variante der Reinigungselemente 4, 14 und 24 ist der Befestigungsabschnitt B aus einem Hartkunststoff oder aus einer Mischung eines Hartkunststoffes und eines Elastomers ausgebildet. Der Reinigungsabschnitt A kann dann ebenfalls aus der gleichen Kunststoffkomponente wie der Abschnitt B bestehen oder aus einem weicheren Material, insbesondere einem Elastomer ausgebildet sein.In a further variant of the
Claims (8)
- Toothbrush having a cleaning element (4, 14, 24), which is designed as a plastic, injection-molded part that has an attachment section (B) for attachment in the head region (1) of the toothbrush and a cleaning section (A) for cleaning teeth, wherein the cleaning section (A) has a narrow side (21) and a wide side (22), and wherein the plastic injection-molded part has at least one indentation (7) in the region of the cleaning section (A), around which the cleaning section (A) has an increased bending flexibility, characterized in that the cleaning section (A) is designed to taper in the material width - in particular, with respect to the width of the narrow side - from the attachment section (B) to the upper end (6), and that the cleaning section (A) has a wave-shaped region (n), wherein each wide side (22) of the cleaning section on the wavy region (n) has alternating indentations and protrusions, wherein one indentation on one wide side (22) is designed as an opposing protrusion on the other side of the wide side (22), and wherein the wavy region (n) is arranged between the upper end of the cleaning element and the subsequent two thirds of the longitudinal extension of the cleaning section (A).
- Toothbrush according to claim 1, wherein several indentations (7) are arranged and formed on the cleaning section (A) in such a manner that the latter has an increased bending flexibility in two directions (8, 9).
- Toothbrush according to one of the preceding claims, wherein the at least one indentation (7), starting from one upper end (6), facing away from the attachment section (B), of the cleaning section (A), is arranged one tenth - in particular, three twentieths - of the longitudinal extension of the cleaning section (A) from the upper end (6), or is arranged farther away from the upper end (6) in the remainder of the longitudinal extension.
- Toothbrush according to one of the preceding claims, wherein the narrow side (21) is straight, and each of the wide sides (22) of the cleaning section (A) are provided on both sides with at least one - preferably, more than two - indentations.
- Toothbrush according to one of the preceding claims, wherein the cleaning section is designed in such a manner that the ratio of the wide side (22) to the narrow side (21) is between at least 2:1 and up to 20:1 across its entire longitudinal extension.
- Toothbrush according to one of the preceding claims, wherein the cleaning element (4, 14, 24) is formed from a plastic component.
- Toothbrush according to one of the preceding claims, wherein the attachment section (B) and the head region (1) of the toothbrush are designed in such a manner that the cleaning element (4, 14, 24) can be released from the head region (1) only with a force of > 8 N - in particular, > 12 N and, in particular, > 15 N.
- Toothbrush according to one of the preceding claims, wherein the cleaning section (A) in the region(s) of the indentation (7) has a material width that - in particular, in the bending direction around the indentation (7) - is less than or equal to the material width of the cleaning section (A) in the region towards the attachment section (B).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007018766A DE102007018766A1 (en) | 2007-04-20 | 2007-04-20 | toothbrush |
PCT/EP2008/003009 WO2008128684A1 (en) | 2007-04-20 | 2008-04-16 | Toothbrush |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2136674A1 EP2136674A1 (en) | 2009-12-30 |
EP2136674B1 true EP2136674B1 (en) | 2018-05-23 |
Family
ID=39650680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08748928.2A Active EP2136674B1 (en) | 2007-04-20 | 2008-04-16 | Toothbrush |
Country Status (9)
Country | Link |
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US (1) | US8677545B2 (en) |
EP (1) | EP2136674B1 (en) |
CN (1) | CN101662971B (en) |
BR (1) | BRPI0810154A2 (en) |
CA (1) | CA2684648A1 (en) |
DE (1) | DE102007018766A1 (en) |
HK (1) | HK1139572A1 (en) |
MX (1) | MX2009011296A (en) |
WO (1) | WO2008128684A1 (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2957243B1 (en) * | 2010-03-12 | 2012-04-13 | Conception Des Applic Des Tech Electroniques Soc Pour | VIBRATORY INSTRUMENT WITH INTERCHANGEABLE TOOL |
DE102010014929A1 (en) * | 2010-04-14 | 2011-10-20 | Synpart Ag | Toothbrush is made of plastic and has toothbrush head with multiple bristle bundles or separately standing filaments, where bristle ends are cut or formed by suitable tools |
EP2617318A1 (en) * | 2012-01-20 | 2013-07-24 | Braun GmbH | Head for an oral hygiene device |
EP2727493A1 (en) | 2012-11-05 | 2014-05-07 | The Gillette Company | Toothbrush comprising elastomeric cleaning elements over-molded with a harder plastic and method for producing the same |
EP3262974B1 (en) | 2016-06-27 | 2024-06-12 | The Procter & Gamble Company | Method for producing toothbrush heads comprising a two-component-cleaning element |
EP3262975B1 (en) | 2016-06-28 | 2019-02-20 | The Procter and Gamble Company | Method of making brush |
KR102022076B1 (en) * | 2017-09-21 | 2019-09-23 | 한양대학교 에리카산학협력단 | Cleaning method for PVA brush and that apparatus thereof |
USD903215S1 (en) * | 2018-11-20 | 2020-11-24 | Rubbermaid Commercial Products Llc | Broom |
EP3753448A1 (en) | 2019-06-21 | 2020-12-23 | The Procter & Gamble Company | Method for producing a toothbrush head |
EP3753447A1 (en) | 2019-06-21 | 2020-12-23 | The Procter & Gamble Company | Method for producing a toothbrush head or a part thereof |
EP3753449A1 (en) | 2019-06-21 | 2020-12-23 | The Procter & Gamble Company | Hole perforation plate for manufacturing of a toothbrush head and part thereof |
USD907368S1 (en) * | 2019-06-21 | 2021-01-12 | Shenzhen Yanbao Technology Co., Ltd. | Toothbrush head |
EP3753446A1 (en) | 2019-06-21 | 2020-12-23 | The Procter & Gamble Company | Cleaning element carrier and toothbrush head comprising it |
USD907369S1 (en) * | 2019-06-21 | 2021-01-12 | Shenzhen Yanbao Technology Co., Ltd. | Toothbrush head |
USD906679S1 (en) * | 2019-06-21 | 2021-01-05 | Shenzhen Yanbao Technology Co., Ltd. | Toothbrush head |
US11445812B2 (en) * | 2020-06-08 | 2022-09-20 | Frederick Sager | Dental appliance |
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US3567569A (en) * | 1965-08-09 | 1971-03-02 | Toyo Rayon Co Ltd | Synthetic fibers having novel shape |
US4373541A (en) * | 1979-08-07 | 1983-02-15 | Nishioka Gary J | Bristle structure for brushes and brush assembly |
US5195546A (en) * | 1990-12-11 | 1993-03-23 | Ketema | Cosmetic brush and bristles |
US5678275A (en) * | 1995-06-30 | 1997-10-21 | Derfner; Nitza | Toothbrush with bristles having intermediate roughened portion |
DE19615098A1 (en) * | 1996-04-17 | 1997-10-23 | Coronet Werke Gmbh | Brush for gum massage and tooth cleaning and method for producing the bristles of such a brush |
US6058541A (en) * | 1996-07-03 | 2000-05-09 | Gillette Canada Inc. | Crimped bristle toothbrush |
US6553604B1 (en) | 2000-03-16 | 2003-04-29 | Gillette Canada Company | Toothbrush |
WO2003015574A1 (en) | 2001-08-14 | 2003-02-27 | Unilever N.V. | Toothbrush |
DE10164336A1 (en) | 2001-12-28 | 2003-07-17 | Trisa Holding Ag Triengen | Toothbrush and method of making such a toothbrush |
DE10212701B4 (en) * | 2002-03-21 | 2015-05-13 | Geka Gmbh | Bristle, method and device for its manufacture, and bristles |
US20040177462A1 (en) * | 2003-03-14 | 2004-09-16 | The Gillette Company | Toothbrush head |
US7941886B2 (en) * | 2003-09-19 | 2011-05-17 | Braun Gmbh | Toothbrushes |
WO2007000922A1 (en) * | 2005-06-29 | 2007-01-04 | Lion Corporation | Method and device for manufacturing brush and brush |
-
2007
- 2007-04-20 DE DE102007018766A patent/DE102007018766A1/en not_active Ceased
-
2008
- 2008-04-16 CA CA002684648A patent/CA2684648A1/en not_active Abandoned
- 2008-04-16 CN CN2008800127946A patent/CN101662971B/en active Active
- 2008-04-16 WO PCT/EP2008/003009 patent/WO2008128684A1/en active Application Filing
- 2008-04-16 MX MX2009011296A patent/MX2009011296A/en unknown
- 2008-04-16 US US12/596,060 patent/US8677545B2/en active Active
- 2008-04-16 BR BRPI0810154-0A2A patent/BRPI0810154A2/en not_active IP Right Cessation
- 2008-04-16 EP EP08748928.2A patent/EP2136674B1/en active Active
-
2010
- 2010-06-09 HK HK10105699.1A patent/HK1139572A1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
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US8677545B2 (en) | 2014-03-25 |
DE102007018766A1 (en) | 2008-10-23 |
CN101662971A (en) | 2010-03-03 |
CN101662971B (en) | 2013-03-06 |
HK1139572A1 (en) | 2010-09-24 |
EP2136674A1 (en) | 2009-12-30 |
WO2008128684A1 (en) | 2008-10-30 |
BRPI0810154A2 (en) | 2014-12-30 |
CA2684648A1 (en) | 2008-10-30 |
MX2009011296A (en) | 2009-11-02 |
US20110000041A1 (en) | 2011-01-06 |
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